EFFECTS OF VARIOUS IMMUNE RABBIT SERUMS ON THE CELLS OF SEVERAL TRANSPLANTED MOUSE LYMPHOMAS IN VITRO AND IN VIVO

Author:

Mohos Steven C.1,Kidd John G.1

Affiliation:

1. From the Department of Pathology, The New York Hospital-Cornell Medical Center, New York

Abstract

Immune serums prepared in rabbits with antigens made from normal mouse organs and tissues that were presumably devoid of large numbers of lymphocytic cells (notably kidney, liver, brain, whole embryos, and erythrocytes) proved lethal for the cells of several transplanted mouse lymphomas in vitro in the presence of complement; but these immune serums, when given intraperitoneally in large amounts to susceptible mice that had been implanted subcutaneously with lymphoma cells of one or another of several types, failed entirely to inhibit growth of the lymphoma cells in vivo. In contrast, immune serums made with cells procured from transplanted mouse lymphomas as antigens, and those made with cells from normal mouse thymus or lymph nodes, acted even more powerfully upon the several types of lymphoma cells in vitro than did the immune serums prepared with normal mouse organs, and when given intraperitoneally to implanted mice they brought about death of the lymphoma cells in vivo, the effect being to a considerable extent specific and referable to an antibody that reacts with neoplastic and non-neoplastic lymphocytic cells of mice, as absorption experiments disclosed. In comparative tests, furthermore, the anti-lymphoma serums acted more powerfully upon the lymphoma cells in vivo than did such chemotherapeutic agents as amethopterin, azaguanine, ethionine, azaserine, and 6-mercaptopurine, given singly or in various combinations in maximal tolerated amounts, though their effects were not so powerful as those exerted by normal guinea pig serum on lymphoma cells of two types that are susceptible to its action in vivo. The significance of the findings was briefly discussed.

Publisher

Rockefeller University Press

Subject

Immunology,Immunology and Allergy

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