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Curability Difference between Autochthonous Mouse Tumors and Their Transplants in Association with Immune Gene Expression

Tanooka, H.

2025-11-26 cancer biology
10.1101/2025.11.23.690042 bioRxiv
Show abstract

Compared with transplanted tumors, autochthonous tumors are difficult to cure by experimental radiation therapy in mice. Here we analyzed differences in immune gene expression profiles between mouse fibrosarcomas subcutaneously induced by 3-methylcholanthrene (3MC) and their transplants. The immune genes examined were pd1, pdl1, pdl2, cd3d, cd8a, cd8b, ifn{gamma}, dx5, grzmb, and foxp3. Among 12 tumors, one was non-transplantable and showed a benign character with an abundance of DX5+ natural killer cells and CD8+ T cells together with increased IFN{gamma} expression. The other 11 transplantable tumors showed increased expression of pd1, pdl1, pdl2, cd3d, and cd8b, after their transplantation into syngeneic mice. These effects of transplantation highlight the relevance of immune gene expression status to the curability of tumors.

Published in PLOS ONE (predicted rank #1) · training set

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