James P. Crowley’s Post

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Professor of Medicine emeritus at Brown University

Intracelluar oncoproteins like KRAS function as oncodrivers and promote tumor growth by limiting the effectiveness of anti tumor activity of immune CD8+T cells. In vivo, KRASG12D-specific dIgA1, penetrated cancer cells and produced expulsion of oncoproteins and thereby limited the growth of KRASG12D-mutated ovarian and lung carcinomas in a manner dependent on CD8+ T cells. Also in vivo, dIgA specific for IDH1R132H reduced colon cancer growth, demonstrating effective targeting of a cytoplasmic oncodriver not associated with surface receptors. dIgA targeting of KRASG12D restricted tumor growth more effectively than small-molecule KRASG12D inhibitors, supporting the potential of this approach for the treatment of human cancer. #immunotherapy #cancer #dimericiga #kras

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