Human cancers transplanted in nude mice retain the expression of their organ-specific neoantigens

Thomson, D.M.; Neville, A.M.; Phelan, K.; Scanzano, R.S.; Vandevoorde, J.P.

European Journal of Cancer and Clinical Oncology 17(11): 1191-1197

1981


ISSN/ISBN: 0277-5379
PMID: 7199466
Document Number: 179861
Human cancers transplanted to nude mice seem to retain most features of the original tumor. To determine if organ-specific neoantigens were still expressed after transplantation, 4 different human cancers were assayed in the tube LAI assay. The LAI phenomenon measures the change in adherence properties of leukocytes that have bound an antigen to which they are sensitized immunologically. Four of 4 transplanted human cancers-pancreas, lung, breast and colon-stimulated an LAI+ response with leukocytes from patients with cancers of the same organ. The antitumor response was not as vigorous against a pool of transplanted tumor extracts as against those prepared from liver metastases. Nonetheless, the results add to the mounting evidence that human cancers express neoantigens to which most humans bearing cancers respond immunologically.

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