Relations between Immunity and Malignancy - PNAS

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Proc. Nat. Acad. Sci. USA
                                          Vol. 69, No. 4, pp. 1026-1032, April 1972

                                          Relations between Immunity and Malignancy
                                          ROBERT A. GOOD
                                          Departments of Pathology, Pediatrics, and Microbiology, University of Minnesota,
                                          Minneapolis, Minn. 55455

                                          ABSTRACT         A higher incidence of malignancy as well                  Leukemia in Bruton-type agammaglobulinemia
                                          as greater susceptibility to infection has been found to be
                                          associated with primary immunodeficiencies. An in-                         Particularly important to us at the time were studies of
                                          creased incidence of leukemia has been associated with                     patients who had selective deficiency of immunoglobulin
                                          X-linked infantile agammaglobulinemia-an isolateddefect                    synthesis and secretion, failure of antibody production,
                                          of humoral immunities. An increased frequency of a wide
                                          variety of malignancies have been found to accompany                       absence of plasma cells from bone marrow and lymphoid
                                          several different forms of primary immunodeficiency.                       tissues, and deficiency of germinal centers and cell populations
                                          Secondary immunodeficiencies produced by immuno-                           in the far cortical areas of lymph nodes (6-9) (Fig. 1). Recent
                                          suppressant therapy to facilitate renal transplantation                    work by Cooper and associates (10) and Grey et al. (11) show
                                          have also been found to have far too much cancer to be                     that such patients lack B cells as well as plasma cells. We had
                                          explained by chance association. Many experimental
                                          associations between immunity and malignancy have                          found that these patients often cannot form antibody even
                                          also been encountered, indicating that these two adaptive                  in response to repeated and most intense antigenic stimula-
                                          processes have an essential relationship that must be                      tion.
                                          elucidated.                                                                   Their cellular immunologic vigor was quite good and
                                          An area in rapid development, and hence one of considerable                probably intact (12, 13). Such patients have been found to
                                          controversy is that which was opened by a postulate ex-                    develop delayed allergic responses normally, to show and
                                          pressed by Lewis Thomas in 1958 (1). It was Thomas' concept                develop contact allergy with vigor, and to have lymphocytes
                                          that transplantation immunity as defined in the extraor-                   that respond to kidney-bean extract (phytohemagglutinin)
                                          dinary analysis of Medawar (2) must play a major role in                   in vitro and to allogeneic (of different genetic constitution)
                                          the body economy. Thomas could not visualize this new form                 lymphocytes in mixed leukocyte culture quite normally (14).
                                          of immunity as having its high specificity and destructive                 We have studied the capacity for allograft rejection in
                                          potential, either as a mechanism placed in the body to con-                several of these patients with Bruton-type agammaglobulin-
                                          found aspiring transplantation surgeons or as a basis for                  emia. Usually they will recognize and reject a skin allograft
                                          diagnosis of persisting bacterial infections, e.g., tuberculosis.          quite normally. They often show a significant delay, however,
                                          Rather, he reasoned that the mechanism must have a raison                  in the rejection of an initial skin graft, but can show a vigorous
                                          d'etre directed toward destruction of cells or tissues, which              second set skin-graft rejection (14). Thus, even though such
                                          when arising de novo in the body would be recognized as                    patients cannot form circulating antibodies, they do not lack
                                          foreign and would be eliminated by a major line of defense.                immunity and one can transfer cellular immunity to non-
                                          Thus, Thomas originally stated a hypothesis that has sub-                  sensitized normal persons by injecting, intradermally, blood
                                          sequently been popularized as the concepts of immuno-                      lymphocytes of patients with Bruton-type agammaglobulin-
                                          surveillance especially in the writings of Burnet (3). This view           emia (15). Through the years, some 50 or so patients with
                                          has been vigorously discussed, and right or wrong, the                     Bruton-type agammaglobulinemia have been discovered,
                                          postulate has served its purpose. It has generated a great                 studied, and reported. Of these five have apparently developed
                                          amount of new information concerning the relationship                      malignancy, and in each instance the malignancy has been
                                          between immunity and malignancy (4).                                       leukemia (Table 1). None, thus far, have developed carcinoma
                                                                                                                     or solid tissue sarcoma, or even lymphosarcoma. This inci-
                                            My own relationship to this postulate derived from the
                                          fact that I, a former student and colleague of Thomas, was                 dence of leukemia-about 10%, stands far in excess of that
                                          heavily engaged at the time in studying the nature of the                  observed in members of the general population of the same
                                          immunologic deficit in patients suffering from primary and                 age (16,17).
                                          secondary forms of immunodeficiency diseases (5). A corollary              Immunodeficiency in patients with Hodgkin's disease
                                          of the postulate was that immunodeficient patients, less
                                          capable than normal of rejecting skin allografts, should not               At the same time, we were concerned with the immuno-
                                          only reveal their immunodeficiency in increased susceptibility             deficiency in patients with Hodgkin's disease. Schier (18)
                                          to infection, but should have too much cancer when compared                had pointed out that such patients often are anergic. We
                                          to immunologically competent persons. At the time Thomas                   looked at this question and confirmed Schier's findings (19).
                                          expressed this prediction, we were already working intensively             We then showed that anergy often progresses with pro-
                                          with several forms of immunodeficiency disease and investi-                gression of the disease (20), extends to a frequent deficiency
                                          gating the relations between structure and function in the                 in vigor of skin allograft rejections (21), and cannot readily
                                          lymphoid apparatus in the perspective of such patients as                  be corrected by giving leukocytes from normal sensitive
                                          Experiments of Nature.                                                     donors (5, 15, 19, 21-23). In some of these experiments, what
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Proc. Nat. Acad. Sci. USA 69    (1972)                                      Relations between Immunity and Malignancy            1027

                                           we considered massive leukocyte infusions from sensitized
                                           donors were tried, and they regularly failed to sensitize the
                                           nonsensitized patient with Hodgkin's disease. By contrast,
                                           patients with Hodgkin's disease produced antibodies well in
                                           response to many antigenic stimulations. They regularly
                                           possessed in their circulation at least normal amounts of all
                                           immunoglobulins, had plenty of plasma cells in their hemato-
                                           poietic tissues, and produced germinal centers in the lymph
                                           nodes, usually after antigenic stimulation. As a counterpoint
                                           experiment of nature to the patients with Bruton-type
                                           agammaglobulinemia (a B-cell immunodeficiency), patients
                                           with Hodgkin's disease exhibited a deficiency of T-cell but
                                           not of B-cell-dependent immune functions. In these same
                                           terms, it was clear that B-cell immune functions are regularly
                                           deficient in multiple myeloma, while T-cell functions are
                                           quite intact (24). In chronic lymphatic leukemia, a disease
                                           apparently based on monoclonal proliferation of B-cells (25),
                                          both T- and B-cell immunities are deficient early in the course
                                          of the disease (26, 27).
                                             Even in these early analyses that were surely crude by
                                          present standards, it was clear that in advanced and ad-
                                          vancing malignancy, deficiency of cellular immunity is a
                                          frequent concomitant. Thus, Southam et al. (28) and Kelly
                                          et al. (20) studied in cancer patients, cellular immunity to
                                          cancer cells, skin allografts, and antigens against which
                                          cellular immunity is widespread in the general population.
                                          They, thus, defined a high frequency of anergy of cellular
                                          immune functions not only in patients with Hodgkin's
                                          disease but in those with advanced malignancies as well.
                                                                                                                FIG. 1. Lack of germinal centers in the cortical area of a lymph
                                          Ataxia-telangiectasia                                               node from a patient with X-linked infantile agammaglobuli-
                                          Before we studied the immune responses, immunoglobulin              nemia.
                                           concentrations and lymphoid tissues of patients with ataxia-
                                           telangiectasia, this disease was considered primarily to be a      small, does not show cortical and medullary differentiation,
                                           neurological disorder (29-31). This disease, however, is           contains very few lymphocytes, and does not contain Hassall's
                                           featured by an association of progressive cerebellar ataxia,       corpuscles (34). The thymus, indeed, has the appearance of
                                           telangiectases of the sclera and skin, especially the skin of      an embryonic thymus that is just developing a lymphoid
                                           the eyelids, anticubital, and'popliteal regions. These patients    structure. This form of immunodeficiency is important in the
                                           also showed an increased frequency of sinopulmonary in-            context of our present analysis because one of the frequent
                                           fection (31, 32). The disease has been considered to be an        causes of death in these unfortunate children is malignancy.
                                          autosomally inherited disorder, but Lambrechts and Snoijink        Malignancies are frequently reticulum-cell sarcoma, lympho-
                                           (32) have recently presented arguments that it may be based       sarcoma, and leukemia, but epithelial malignancies, especially
                                          on an isoimmunization, and J. Finstad and R. A. Good               of the gastrointestinal tract and malignancies of other sup-
                                           (unpublished observations) have proposed that if this is          porting tissue and mesenchymal tissues have been reported
                                          indeed an isoimmunization, it might be due to isoimmuniza-         as well (17, 33). Indeed, the incidence of malignancy in
                                          tion against the human homologue of the isoantigen 0 in the        patients of this group has been about 10% of all collected
                                          mouse. The isoantigen is distributed in the central nervous        cases. This high incidence is all the more striking, because it
                                          system and in peripheral lymphoid cells of the T-cell class.       is occurring at an age in childhood and early life when the
                                          The immunological deficiency in patients with ataxia-telangi-      frequency of malignancy is otherwise very low (17).
                                          ectasia includes frequent (60-70% of patients) deficiency or
                                          absence of IgA, frequent absence of IgE, and regular de-           Malignancy in the Wiskott-Aldrich syndrome
                                          ficiency of cellular immune vigor (31-35). Concordant with         A completely different form of immunodeficiency of man is
                                          the abnormality of cellular immunity in these patients is a        represented by the Wiskott-Aldrich syndrome. In this disease
                                          consistent abnormality of the thymus. The thymus is usually        the triad of (i) increased tendency to bruise and bleed be-
                                                                                                             cause of low platelet count and possibly abnormal platelets
                                          TABLE 1. Leukemias in infantile, X-linked immunodeficiency         (ii) increased susceptibility to infection and (iii) an atopic-
                                                                                                             like eczema are associated (36, 37). The increased sus-
                                                       Acute lymphocytic leukemia                            ceptibility to infection (38) is associated with a dual system
                                                       Malignant lymphoma                                    immunodeficiency of peculiar nature. Patients with Wiskott-
                                                       Chronic monomyelogenous leukemia                      Aldrich syndrome have frequent and progressive deficit of
                                                       Thymoma with leukemia                                 cell-mediated immunity, deficiency in the concentration of
                                                       Lymphatic leukemia
                                                                                                             circulating IgM, and frequently massively elevated con-
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1028      Good                                                                                 Proc. Nat. Acad. Sci. USA 69 (1972)
                                                       TABLE 2. Malignancies in patients                       dominant inheritance of a trait that may be expressed in one
                                                         with primary immunodeficiency                         individual as a primary immune deficiency and in other
                                                                                                               family members as mesenchymal disease has been encountered
                                                                         Approximate no. of           %        (46). Still other cases seem to occur sporadically that would,
                                            Primary disease             malignancies collected      Cancer     of course, be compatible with recessive inheritance. Recent
                                          Bruton-type agam- Five cases, all leukemia                   5-10    studies in our laboratory, as well as in several others, e.g.,
                                            maglobulinemia                                                     that of Cooper et al. (10, 11, 14, 47, and unpublished observa-
                                          Ataxia-telangiectasia 42 Cases, many forms of cancer       10-15     tions) indicate that these patients possess B cells, but do not
                                          Wiskott-Aldrich       13 Cases, mostly but not exclu-     >10        develop secretory B cells or plasma cells normally. Quantita-
                                            syndrome              sively lymphoreticular malig-                tive studies in our laboratory indicate that very regularly such
                                                                  nan cies
                                          Common variable       More than 30 cases, many forms
                                                                                                               patients have fewer than normal responding T cells as well
                                                                                                       5-10    (48). As with the patients with ataxia-telangiectasia and
                                            immunodeficiency      of cancer
                                          Severe dual system Three cases                               1-10    Wiskott-Aldrich syndrome, these patients too are developing
                                            immunodeficiency                                                   cancer in an incidence that approaches 10% (17). The
                                                                                                               malignancies encountered are often of the lymphoid system
                                                                                                               or of the reticular apparatus, but may be epithelial, especially
                                                                                                               involving stomach, colon, and intestinal epithelium as well.
                                          centrations of IgA and IgE. These patients fail to respond with      The incidence of malignancy encountered in the several
                                          antibody production or with development of cellular im-              immunodeficiencies is summarized in Table 2.
                                          munity to polysaccharide antigens, e.g., pneumococcus                Chediak-Higashi anomaly
                                          polysaccharide, Vi antigen, blood group antigens, and the            Still another human disease in which increased susceptibility
                                          cellular antigens that give rise to heterolysins (39-41). By         to infection and malignancy are associated is the so-called
                                          contrast, they make both IgM and IgG antibodies to protein           Chediak-Higashi anomaly (49). Patients with this disorder,
                                          antigens very well. Patients with Wiskott-Aldrich syndrome           from an early age, are susceptible to recurrent infections
                                          are susceptible to virus, fungus, and bacterial infection, and
                                                                                                               especially of the gastrointestinal and respiratory systems.
                                          to both high-grade, encapsulated bacterial pathogens and the         If they do not die of infection, they die of malignancy (50).
                                          more frequent low-grade pathogens (38, 39). In this disease
                                                                                                               The malignancy is often diagnosed as lymphosarcoma or
                                          also, malignancy occurs far too frequently (17). The most            Hodgkin's disease. Although the immunologic basis of their
                                          common form of malignancy is a strange reticulum-cell
                                                                                                               susceptibility to infection is not yet clear, they have a granular
                                          malignancy that frequently occurs in the brain as well as in         abnormality that involves lymphocytes, polymorphonuclears,
                                          the lymphoid and hematopoietic organs (42). Occassionally,           eosinophils, as well as cells of many organs and tissues. It
                                          but certainly too frequently to be explained by chance, other        seems certain that this abnormality of single membrane-
                                          malignancies including epithelial malignancies have been             bound particles in some way accounts both for the immuno-
                                          encountered in these patients (17). The incidence of malig-          deficiency and the increased frequency of malignant disease.
                                          nancy in children with the Wiskott-Aldrich syndrome is
                                          greater than 10%, and thus again represents a fantastic              Severe dual-system (cellular and humoral)
                                          excess over that encountered in the general population.              immunodeficiency and DiGeorge syndrome
                                          Malignancy    in   patients   with the   common
                                                                                                               Already several cases of malignant disease have turned up in
                                          variable immunodeficiency                                            patients with severe dual-system immunodeficiency (17),
                                                                                                               even though the children with this disorder generally live
                                          Among the most frequent of the immunodeficiency syndromes            only a short time. To the knowledge of the writer none have
                                          have been observed in the patients with what has been                been encountered in the few patients with the so-called
                                          described in the past as acquired agammaglobulinemia,                DiGeorge syndrome. Further studies of these relationships
                                          late-occurring immunodeficiency, sporadic immunodeficiency,          are, however, warranted particularly now that these patients
                                          abrotropic immunodeficiency, familial immunodeficiency with          are being partially and/or completely corrected by thymus
                                          autoimmune disease, and dysgammaglobulinemia of various              and/or marrow transplantation.
                                          types. Whether this is a single disease or multiple entities
                                          yet to be separated remains to be resolved (43, 44). As a            Immunologic perturbations during oncogenesis
                                          group, these patients regularly can be shown to have a high          with chemical carcinogen
                                          frequency of autoimmune disease, a high frequency of accom-          As early as 1952, Malmgren et al. (51) noted that several
                                          panying hematological abnormality, increased frequency of            carcinogenic chemicals are also immunosuppressive, whereas
                                          bacterial, virus, and even fungus infection. The immuno-             closely related compounds are neither immunosuppressive nor
                                          logical deficiency, likewise, is variable in severity, but regu-     carcinogenic. Extensive subsequent studies have since been
                                          larly can be shown to involve both the T and B cells. Although       performed that attest to the intimacy of these two influences
                                          valiant efforts have been made to classify and subclassify           (52, 53). Surely, the immunosuppressive quality of the
                                          these patients, the variability from time to time in the same        chemical carcinogen need not be expressed in vivo in order
                                          patient and between members of the same family has argued            to yield a carcinogenic influence, since cells have been trans-
                                          against fine sublcasses at this juncture (43). Particularly, we      formed in vitro to putative malignant state where no influence
                                          have found the concept of consistent forms of dysgamma-              on the immune response need be considered (54). Further,
                                          globulinemia (45) spurious at best, and we thus, no longer           the dosage of chemical carcinogen needed to exercise a
                                          use the term. In some instances an autosomal recessive               demonstrable immunosuppressive effect may far exceed the
                                          pattern in families of these patients is clear; in other instances   concentration necessary to exercise a carcinogenic influence
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Proc. Nat. Acad. Sci. USA 69    (1972)                                   Relations between Immunity and Malignancy           1029

                                            in vivo (55). Nonetheless, the parallelism of the two cellular     regularly to permit cardiac, liver, pancreas, or even marrow
                                            influences cannot represent a chance association. Prehn (56)       transplants, and they often cannot control graft-versus-host
                                            particularly has been concerned with these interrelationships      reactions. It is to be expected that this approach will be
                                            and has recorded that tumors that are produced by agents           improved and even more powerful immunosuppressive
                                            like methylcholanthrene that induce malignancy rapidly             therapy will be developed that will extend the transplantation
                                            in vivo are likely to be more powerful immunosuppressants          era. One complication of these immunosuppressive regimens
                                            than agents like plastic that induce malignancy more slowly.       might be anticipated from the Thomas' postulate (1). Im-
                                            Further, malignancies that develop rapidly under powerful          munosuppression, powerful enough to depress organ and cell
                                            chemical carcinogens are likely to have more readily demon-        rejection from allogeneic donors, might foster development
                                            strable antigenicity in animals syngeneic to those in which        of malignancy. This prediction has apparently been borne out
                                            the tumor developed than are the tumors that develop under         because about a 10-fold increase in incidence of malignancy
                                            weaker carcinogenic influence, where longer incubation             has been observed in patients given an organ transplant
                                            period is required.                                                under immunosuppressive therapy (17, 62, 63). The malig-
                                            Influence of experimental iinmunosuppression                       nancies and tumors that have developed have been approxi-
                                            on development of malignancy                                      mately equally divided among tumors of epithelial and
                                           On the other side of the coin, we find evidence that immuno-       lymphoreticular origins (63-65). The four tumors of which
                                                                                                              we have seen in the Minnesota series have all been epithelial
                                           suppressive regimens in experimental animals foster the            in nature. One was an anaplastic carcinoma, one was an
                                           development of malignancies de novo and also may foster the        ovarian carcinoma, and two were carcinomas of the cervix
                                           occurrence and establishment of metastases (17, 57). Some
                                                                                                              uteri. The frequently indicated association between lympho-
                                           evidence has been presented that immunosuppressive regi-           reticular malignancy and antilymphocyte serum (66) is not
                                           mens including thymectomy (58), and even antilymphocyte
                                           serum foster the development of malignancies induced by            sufficiently inclusive. Malignancies occur with greater fre-
                                                                                                              quency than normal when immunosuppression is accomplished
                                           chemical carcinogens. In this regard, it is important to
                                           consider Allison's (59, 60) more recent analysis that indicates    without antilymphocyte serum (64). Further, epithelial as
                                           that with certain immunosuppressive regimens, only the             well as lymphoreticular malignancies are observed in patients
                                           malignancy induced by oncogenic virus(es) is influenced by         whose immunosuppressive regimen includes antilymphocyte
                                                                                                              serum (17, 64). All these relationships are to be predicted from
                                           immunosuppressive agents that are not themselves chemical
                                           carcinogens.                                                       the surveillance hypothesis.
                                               Immunosuppression and Transplantation of Cancer in Man.        Direct evidence for the relation between
                                            Soon after clinical trials of kidney allotransplantation were     immunity and malignancy
                                            introduced some 10 years ago, it became apparent that in           For a number of years, evidence has been accumulating that
                                            man, as in experimental animals, allotransplants of malignant      reflects in still another perspective the essentiality of an
                                            cells could be achieved in immunosuppressed persons. At            immunity-malignancy interface. Wherever they can be
                                            least nine such transplants of malignancy occurred in-             effectively studied in experimental animals, malignant tumors
                                            advertently (17, 52, 61). In each instance, the transplanted       and malignant cells can be shown to have at their surface
                                            malignancy was epithelial in nature, and in four instances         antigens that are foreign to the host (66-68). These antigens
                                            the malignancies became widely disseminated throughout the        are called tumor-specific transplantation antigens (TSTA)
                                            body. To achieve complete regression of these widely dis-         as a reflection of the methods used for their demonstration.
                                            seminated malignancies, the only treatment required in            They differ in chemical-carcinogen and virus-induced malig-
                                            several instances was cessation of the immunosuppressive          nancies in that the tumor-specific transplantation antigens
                                           regimen (52, 61). Once this had been done, the widely dis-         for virus-induced malignancies tend to reflect the virus induc-
                                           seminated malignancy just like the allogeneic organ transplant,    tion and are similar for all the tumors induced by the virus in
                                           was rejected. Thus, under these artificial circumstances, the      question. Thus, in experimental animals, whether a polyoma
                                           potential power of the allograft mechanism for eliminating         virus-induced malignancy is a mesenchymal or an epithelial
                                           even widely disseminated malignancy was demonstrated.              malignancy, sharing of this antigen is to be found. By con-
                                              Immunosuppression and the Development of Malignancy             trast, chemical carcinogen-induced malignancies tend to
                                           De Novo in Man. The extension of clinical transplantation          have tumor antigens that reflect the particular induction to
                                           has witnessed progressive improvement of skill at immuno-          malignancy. Thus, two different malignancies arising within
                                           suppression. This development has been signalled by increasing     the same animal by virtue of the influence of methylcholan-
                                           success in organ transplantation. At the present writing           threne will possess tumor-specific transplantation antigens
                                          renal transplantation is, indeed, a therapeutic fiat accompli      that are different. The same will be true if dibenzanthracene
                                          and renal transplants from well matched sibling donors             has been used as the chemical carcinogen. Similarly, human
                                          should not be rejected and can serve as long term therapy          malignant tumors are being found in which tumor-specific
                                          for patients with end-stage renal disease. Relatives obviously     antigens are present at the surface. In its ultimate con-
                                          not matched at the HL-A histocompatibility determinants            sideration, this consistent relationship between immunity
                                          also can donate kidneys with the expectancy that the grafts        and malignancy means that cells that should be looked on by
                                          in a high percentage of instances (greater than 80% in some        the host as being foreign are not being eliminated from the
                                          series) will provide long term life-saving renal function.         body by immunologic means. In experimental systems, as
                                          Even cadaver donors in 60% of instances provide long term          for example in mice infected with Maloney sarcoma virus
                                          correction of renal failure for many recipients. Such immuno-      (69) and in rabbits infected with Shope papilloma virus (70),
                                          suppressive regimens, however, are not powerful enough             one sees progressor and regressor states of the potential
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1030     Good                                                                              Proc. Nat. Acad. Sci. USA 69 (1972)
                                          malignancy. The analysis of the progressor and regressor           coveries by Jose, Cooper, and me (reviewed) (85) have re-
                                          adaptations in immunological terms by the Hellstroms (71)          vealed that chronic protein or amino-acid deprivation can
                                          and their associates have revealed that in the regressors,         have as one consequence profound depression of capacity to
                                          cell-mediated immunity in the form of a killer function of         produce humoral immunity and blocking antibody against tu-
                                          lymphocytes is directed toward the tumor cells. Serum of the       mor cells in xenogeneic, allogeneic, and syngeneic animals,
                                          animals does not interfere or oppose this action. By contrast,     while leaving cellular immunity intact or even enhancing it.
                                          in the progressor status, cellular immunity directed against       More profound nutritional deprivation can yield deficiencies
                                          the tumor cells can be demonstrated, but the tumor seems to        of both cellular and humoral immunity. It seems possible from
                                          be protected from destruction by blocking antibodies in            cursory study of the literature as well as from our own
                                          circulation that inhibit this action. Similarly, in rabbits        experimental results that difficulty in developing malignancy
                                          infected with Shope-papilloma virus, a regressor state is          in the presence of nutritional deprivation may relate to the
                                          associated with cellular immunity, while in the progressor         differential influence of certain forms of nutritional depriva-
                                          state a humoral immunity seems to exist that can interfere         tion on the T- and B-cell immunities.
                                          with the destructive action of the cellular immunity on the
                                          tumor cells.                                                       Relation between aging, immunity, and malignancy
                                             Much evidence has now accumulated to indicate that in           Another interesting relation exists between immunity and
                                          numerous experimental systems and in many different human          malignancy that is revealed in aging (86). With aging,
                                          malignancies, cellular immune reactions directed against           immunologic vigor, especially the vigor of cellular immunity
                                          malignancy exists concomitantly with blocking antibodies           shows remarkable decline in many strains of mice. By con-
                                          that are able to interfere with the killer action of the lympho-   trast, capacity to form immunoglobulins and autoantibodies
                                          cytes against the tumor cells (72). These exciting phenomena       seems to be retained longer (87). Thus, a lack of immuno-
                                          may well be extensions of the enhancement phenomenon               logical balance occurs frequently in aged mice that could
                                          discovered for certain experimental situations long ago (73).      favor immunodeviation of the sort that in experimental
                                          I have used the term immunodeviation to describe this              animals fosters success of the malignant adaptation (88).
                                          class of reactions.                                                Similar cellular immunodeficiency can also occur with aging
                                             A possible alternate means of circumventing cellular and        in man. Much study to extend, quantitate, and evaluate these
                                          humoral tumor immunity that might destroy malignant cells          relationships seems warranted in light of the frequent oc-
                                          includes immunological tolerance, but this has not yet been        currence of certain forms of malignancy with age in mice and
                                          clearly defined for tumor-host relationships any more than it      men, and the greater propensity of aged animals to accept
                                          has for other forms of cellular immunity directed against          transplants of malignant cells (3).
                                          foreign cells. Other possible mechanisms by which tumor
                                          cells can avoid effective immune reactions include antigenic       The meaning of the interfaces
                                          modulation (74), already known for both human and animal           These many interfaces between the malignant adaptation on
                                          tumor cells (70) and inhibition of "the cellular display" of       the one hand and immunologic adaptation on the other,
                                          Alexander and others in development of immunity (75).              suggest that these two adaptive processes have been inter-
                                          Oncogenic viruses as immunosuppressants                            acting in some important and possibly essential way for a
                                          Working with the Gross passage A virus, Peterson, Dent, and        very long period. There can be no question that Thomas'
                                          I (76, 77) discovered that oncogenic viruses can suppress          postulate has been useful. VWhether it is correct is another
                                          cellular as well as certain humoral immune adaptations. In         matter. Prehn has beautifully summarized evidence, which
                                          more lateral studies, similar profound influences of various       he believes argues against the concept of immunosurveillance
                                          oncogenic viruses on different immune responses have been          (54). By contrast, he visualizes the essential relation between
                                          discovered (78). Indeed, it seems a characteristic of many         immunity and tumor antigenicity in another way, namely,
                                          oncogenic and nononcogenic viruses that they have capacity         that the tumor-specific antigens and the nonself nature of the
                                          to inhibit development and expression of immune reactions,         malignant cells may in some way be essential to their ex-
                                          especially cellular immune reactions (79). The temporary and       pression of a malignant nature. Whichever view is correct, it
                                                                                                             seems that the foreignness of malignant cells will be used to
                                          long-term influences of oncogenic viruses on cellular immune
                                          functions needs much more study, especially at a molecular         detect the occurrence of malignancy and perhaps even to
                                          level. Certainly, the capacity of the cells involved in cellular   prevent and treat the malignant process. In the latter direc-
                                          immunity to synthesize protein, DNA, and RNA in response           tion, the carcinoembryonic antigens first looked at by Gold
                                          to mitogenic stimuli as with phytohemagglutinin (80-82),           and Freedman (89), Uriel (90) and others, as well as the
                                          allogeneic cells, or antigen can be profoundly influenced by       tumor-specific transplantation antigens, hold promise. Crude
                                          exposure to viruses like rubella virus, rubeola virus, or New-     efforts at immunotherapy already are being attempted (91).
                                          castles disease virus.                                                Bone marrow transplantation (92), thymic transplantation
                                                                                                             (93, 94), and the use of transfer factor (95) represent the
                                          Relation between nutrition, immunity, and malignancy               first steps in correction of the immunodeficiencies that as
                                          Beginning with studies by Moreschi in 1909 (83) and Rous           model systems have taught us so much about the development
                                          in 1914 (84) an abundant literature has accumulated indi-          and organization of the lymphoid system. Ultimately,
                                          cating that experimental animals that are nutritionally            somatic cellular genetic analysis, genetic engineering, and
                                          deprived are less prone to develop various malignancies than       cellular engineering applied to these diseases can give us
                                          are well-nourished animals. Protein nutritional deprivation        powerful new approaches for correction of these and other
                                          and deprivation of essential amino acids particularly inhibit      immunologic deficits that underly development of malig-
                                          development of malignancy in many systems. Recent dis-             nancy.
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Proc. Nat. Acad. Sci. USA 69     (1972)                                       Relations between Immunity and Malignancy                1031

                                             The author is an American Legion Memorial Research Profes-                  Series, eds. Good, R. A. & Bergsma, D. (National Founda-
                                           sor Regents' Professor of Pediatrics, Pathology, and Microbi-                 tion Press, New York), pp. 370-377.
                                           ology. Aided by grants from the American Cancer Society, The          35.     Biggar, W. D., Lapointe, N., Ishizaka, K., Meuwissen, H.,
                                           National Foundation-March of Dimes, and U.S. Public Health                    Good, R. A. & Frommel, D. (1970) Lancet ii, 1089.
                                           Service (AI-08677), and contract from the Special Cancer Virus        36.     Wiskott, A. (1937) Monatsschr. Kinderheilk 68, 212-214.
                                           Program (NIH 71-2261).                                                37.     Aldrich, R. A., Steinberg, A. G. & Campbell, D. C. (1954)
                                                                                                                         Pediatrics 13, 133-139.
                                              1. Thomas, L. (1961) in Cellular and Humoral Aspects of the        38.     St. Geme, J. W., Jr., Prince, J. T., Burke, B. A., Good, R. A.
                                                   Hypersensitive States, ed. Lawrence, H. W. (Hoeber-Harper,            & Krivit, W. (1965) N. Engl. J. Med. 273, 229-234.
                                                   New York), pp. 529-532.                                       39.     Cooper, M. D., Chase, B. P., Lowman, J. T., Krivit, W. &
                                              2. Medewar, P. B. (1961) in Cellular and Humoral Aspects of                Good, R. A. (1968) in Immunologic Deficiency Diseases in
                                                   the Hypersensitive States, ed. Lawrence, H. S. (Hoeber-               Man. Birth Defects Original Article Series, eds. Good, R. A.
                                                   Harper, New York), pp. 504- 529.                                      & Bergsma, D. (National Foundation Press, New York), pp.
                                             3. Burnet, F. M. (1970) in Progress in Experimental Tumor                   378-387.
                                                   Research (Karger, Basel), pp. 1-27.                           40.     Cooper, M. D., Chase, H. P., Lowman, J. T., Krivit, W. &
                                             4. Smith, R. T. & Landy, M. (eds.) (1970) Immunological Sur-                Good, R. A. (1968) Amer. J. Med. 44, 499-513.
                                                  veillance (Academic Press, New York).                          41.     Blaese, R. M., Strober, W., Brown, R. S. & Waldmann,
                                             5. Good, R. A., Kelly, W. D., Rotstein, J. & Varco, R. L.                   T. A. (1968) Lancet i, 1056-1061.
                                                   (1962) in: Progress in Allergy (Karger, Basel and New         42.     Ten Bensel, R. W., Stadlan, E. M. & Krivit, W. (1966) J.
                                                  York), pp. 187-319.                                                    Pediat. 68, 761-767.
                                             6. Good, R. A. (1955) J. Lancet 75, 245-271.                        43.     Seligmann, M., Fudenberg, H. & Good, R. A. (1968) Amer.
                                             7. Good, R. A. (1954) Revue Hematol. 9, 502-503.                            J. Med. 45, 817-825.
                                             8. Good, R. A. (1955) J. Lab. Clin. Med. 46, 167-181.               44.     Fudenberg, H. H., Good, R. A., Goodman, H. C., Hitzig,
                                             9. Peterson, R. D. A., Cooper, M. D. & Good, R. A. (1965)                   W., Kunkel, H. G., Roitt, I. M., Rosen, F. S., Rowe, D. S.,
                                                  Amer. J. Med. 38, 579-604.                                             Seligmann, M. & Soothill, J. R. (1971) Pediatrics 47, 927-
                                            10. Cooper, M. D., Lawton, A. R. & Bockman, D. E. (1971)                     946.
                                                  Lancet ii, 791-794.                                            45.     Rosen, F. S., Craig, J. M., Vawter, G. & Janeway, C. A.
                                            11. Grey, H. M., Rabellino, E. & Pirofsky, B. (1971) J. Clin.                (1968) in Immunologic Deficiency Diseases in Man, Birth
                                                  Invest. 50, 2368-2375.                                                 Defects Original Article Series, eds. Good, R. A. & Bergsma,
                                            12. Good, R. A., Zak, S. J., Jensen, D. R. & Papenheimer, A. M.,             D. (National Foundation Press, New York), pp. 67-70.
                                                  Jr. (1957) J. Clin. Invest. 39, 894.                          46.      Wolf, J. K., Gokcen, M. & Good, R. A. (1963) J. Lab. Clin.
                                            13. Good, R. A. & Zak, S. J. (1956) Pediatrics 18, 109-149.                 Med. 61, 230-248.
                                            14. Good, R. A. (1971) in Progress in Immunology, ed. Amos, B.      47.     Pernis, B. & Kunkel, H. (1971) Discussion of Good, Biggar,
                                                  (Academic Press, New York), pp. 699-722.                              and Park in Progress in Immunology, ed. Amos, B. (Academic
                                           15. Good, R. A., Varco, R. L., Aust, J. B. & Zak, S. J. (1957)               Press, New York) p. 723.
                                                  Ann. N.Y. Acad. Sd. 64, 882-924.                              48.     Park, B. H. & Good, R. A. (1972) Proc. Nat. Acad. Sci USA
                                           16. Page, A. R., Hansen, A. E. & Good, R. A. (1963) Blood 21,                69, 371-373.
                                                  197-206.                                                      49.     Windhorst, D. B., Zelickson, A. S. & Good, R. A. (1966)
                                           17. Gatti, R. A. & Good, R. A. (1971) Cancer 28, 89-98.                      Science 151, 81-83.
                                           18. Schier, W. W., Roth, A., Ostroff, G. & Schrift, M. H. (1956)     50.     Page, A. R., Berendes, H., Warner, J. & Good, R. A. (1962)
                                                  Amer. J. Med. 20, 94-99.                                              Blood 20, 330-343.
                                           19. Kelly, W. D., Good, R. A. & Varco, R. L. (1958) Surg.            51.     Malmgren, R. A., Bennison, B. E. & McKinley, T. W., Jr.
                                                  Gynec. Obstet. 107, 565-570.                                          (1952) Proc. Soc. Exp. Biol. Med. 79, 484-488.
                                           20. Lamb, D., Pilney, F., Kelly, W. D. & Good, R. A. (1962) J.       52.     Good, R. A. & Finstad, J. (1969) Nat. Cancer Inst. Monogr.
                                                 Immunol. 89, 555-558.                                                  31, 41-58.
                                           21. Kelly, W. D., Lamb, D. I., Varco, R. L. & Good, R. A.            53.     Stzernsward, J. (1966) J. Nat. Cancer Inst. 37, 505-512.
                                                  (1960) Ann. N.Y. Acad. Sd. 87, 187-202.                       54.     Prehn, R. T. (1970) in Immune Surveillance, eds. Smith,
                                           22. Good, R. A., Kelly, W. D. & Gabrielsen, A. E. (1962) in                  R. T. & Landy, M. (Academic Press, New York), pp. 451-
                                                  Second International Symposium on Immunopathology, Benno              462.
                                                  Schwabe & Co. (Basel, Switzerland), pp. 353-384.              55.     Prehn, R. T. (1963) J. Nat. Cancer Inst. 31, 791-805.
                                           23. Warwick, W. J., Archer, 0. K., Kelly, W. D. & Page, A. R.        56.     Prehn, R. T. (1964) J. Nat. Cancer Inst. 32, 1-17.
                                                  (1961) Fed. Proc. 20, 18-00.                                  57.     Klein, G. (1969) Fed. Proc. 28, 1739-1753.
                                           24. Zinneman, H. H. & Hall, W. H. (1954) Ann. Inter. Med. 41,        58.     Defendi, V., Roosa, R. A. & Koprowski, H. (1964) in The
                                                  1152-1163.                                                            Thymus in Immunobiology. eds. Gabrielsen, A. E. & Good,
                                           25. Seligmann, M. (1971) Presented on section of Immune Dis-                 R. A. (Hoeber-Harper, New York), pp. 504-520.
                                                 orders of Man panel at First Internatiqnal Congress of Im-     59.     Allison, A. C. & Law, L. W. (1968) Proc. Soc. Rap. Biol.
                                                 munology. In Progress in Immunology (Academic Press,                   Med. 127, 207-212.
                                                 New York).                                                     60.     Allison, A. C., Berman, L. H. & Levey, R. N. (1967) Nature
                                          26. Cone, L. & Uhr, J. W. (1964) J. Clin. Invest. 43, 2241-2248.             215, 185-187.
                                          27. Dent, P. B., Peterson, R. D. A. & Good, R. A. (1968) in           61.    Wilson, R. E., Hager, E. B., Hampers, C. L., Corson, J. M.,
                                                 Immunologic Deficiency Diseases in Man, Birth Defects                 Merrill, J. P. & Murray, J. E. (1968) N. Engl. J. Med. 278,
                                                 Original Articles Series, eds. Good, R. A. & Bergsma, D.              479-483.
                                                 (National Foundation Press, New York), pp. 443-458.            62.    McKhann, C. F. (1969) Transplantation 8, 209-212.
                                          28. Southam, C. M. (1961) Cancer Res. 21, 1302-1316.                  63.    Penn, I., Halgrimson, C. G. & Starzl, T. E. (1972) Trans-
                                          29. Louis-Bar (1941) Confin. Neurol. 4, 32-42.                               plant. Proc., in press.
                                          30. Boder, E. & Sedgwick, R. P. (1963) Little Club Clin. Develop.     64.    Starzl, T. E., Penn, I. & Halgrimson, C. G. (1970) N. Engi.
                                                 Med. 8, 110-118.                                                      J. Med. 283, 934.
                                          31. Boder, E. & Sedgwick, R. P. (1963) in Cerebellum, Posture         65.    McPhaul, J. J., Jr. & McIntosh, D. A. (1968) N. Engl. J.
                                                 and Cerebral Palsy, ed Walsh, G. (London), pp. 110-118.               Med. 272, 105.
                                          32. Lambrechts, A. F. & Snoijink, J. J. (1971) Ataxia telangi-        66.    Klein, G. (1966) Is. J. Med. Sci. 2, 135-142.
                                                 ectasia. Morbus Lympholyticus Congenitalis (J. E. Bush-        67.    Prehn, R. T. & Main, J. M. (1957) J. Nat. Cancer Inst. 18,
                                                 mann, Antwerpen, Belgium).                                            769-778.
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                                                Lancet i, 1189-1193.                                                   1275, and 1326-1331.
                                          34. Peterson, R. D. A. & Good, R. A. (1968) in Immunologic            69.    Hellstrom, I. & Hellstro1n, K. E. (1969) Int.J. Cancer 4,
                                                Deficiency Diseases in Man, Birth Defects Original Article             587-600.
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1032     Good                                                                                 Proc. Nat. Acad. Sci. USA 69 (1972)

                                          70. Hellstrom, I., Evans, C. A. & Hellstrom, K. E. (1969) Int.      82. Olson, G. B., South, M. A. & Good, R. A. (1967) Nature 214,
                                              J. Cancer 4, 601-607.                                               695-696.
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                                          72. Hellstrom, I., Hellstrom, K. E., Sjogren, H. 0. & Warner,       85. Jose, D. G., Cooper, W. C. & Good, R. A. (1971) J. Amer.
                                              G. A. (1971) Int. J. Cancer 7, 1-16.                                Med. Ass. 218, 1428-1429.
                                          73. Kaliss, N. & Fitch, F. W. (1971) in Progress in Immunology,     86. Sigel, M. & Good, R. A. (eds.), in Tolerance, Autoimmunity
                                              ed. Amos, B. (Academic Press, New York), pp. 1545-1547.             and Aging (Charles C Thomas, Springfield), in press.
                                          74. Old, L. J., Stockert, E., Boyse, E. A. & Kim, J. H. (1968)      87. Yunis, E. J., Stutman, O., Fernandes, G., Teague, P. 0. &
                                              J. Exp. Med. 127, 523-539.                                          Good, R. A. (1972) in Tolerance, Autoimmunity and Aging,
                                          75. Alexander, P. (1968) Progr. Exp. Tumor Res. 10, 22-71.              eds. Sigel, M. & Good, R. A. (Charles C Thomas, Spring-
                                          76. Peterson, R. D. A., Hendrickson, R. & Good, R. A. (1963)            field).
                                              Proc. Soc. Exp. Biol. Med. 114, 517-520.                        88. Yunis, E. J., Stutman, 0. & Good, R. A. (1971) Ann. N.Y.
                                          77. Dent, P. B., Peterson, R. D. A. & Good, R. A. (1965) Proc.          Acad. Sci. 183, 205-220.
                                              Soc. Exp. Biol. Med. 119, 869-871.                              89. Gold, P. & Freedman, S. 0. (1965) J. Exp. Med. 122, 467-
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                                          78. Friedman, H. & Ceglowski, W. S. (1971) in Progress in Im-       90. Uriel, J., Nechaud, B. de, Birencwajg, M. S., Masseyeff, R.,
                                              munology, ed. Amos, B. (Academic Press, New York), pp.              Leblanc, L., Quenum, C., Loisillier, F. & Grabar, P. (1967)
                                              815-829.                                                            C.R. Acad. Sci. 265, 75-78.
                                          79. Olson, G. B., Dent, P. B., Rawls, W. E., South, M. A.,          91. Mathe, G. (1971) Hosp. Pract. 6, 43-51.
                                              Montgomery, J. R., Melnick, J. L. & Good, R. A. (1968)          92. Good, R. A. (1971) J. Amer. Med. Ass. 214, 1289-1300.
                                              J. Exp. Med. 128, 47-68.                                        93. Cleveland, W. W., Fogel, B. J., Brown, W. T. & Kay, H. E.
                                          80. Rawls, W. E., Melnick, J. L., Olson, G. B., Dent, P. B. &           M. (1968) Lancet ii, 1211-1214.
                                              Good, R. A. (1968) Science 158, 506-507.                        94. August, C. S., Rosen, F. S., Filler, F. M., Janeway, C. A.,
                                          81. Montgomery, J. R., South, M. A., Rawls, W. E., Melnick,             Markowski, B. & Kay, H. E. M. (1968) Lancet ii, 1210-1211.
                                              J. L., Olson, G. B., Dent, P. B. & Good, R. A. (1967) Science   95. Levin, A. S., Spitler, L. E., Stites, D. P. & Fudenberg, H. H.
                                              157, 1068-1070.                                                     (1970) Proc. Nat. Acad. Sci. USA 67, 821-828.
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