alexa Cancer metastasis is accelerated through immunosuppression during Snail-induced EMT of cancer cells.
Oncology

Oncology

Journal of Cancer Science & Therapy

Author(s): KudoSaito C, Shirako H, Takeuchi T, Kawakami Y

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Abstract Epithelial-mesenchymal transition (EMT) is a key step toward cancer metastasis, and Snail is a major transcription factor governing EMT. Here, we demonstrate that Snail-induced EMT accelerates cancer metastasis through not only enhanced invasion but also induction of immunosuppression. Murine and human melanoma cells with typical EMT features after snail transduction induced regulatory T cells and impaired dendritic cells in vitro and in vivo partly through TSP1 production. Although Snail(+) melanoma did not respond to immunotherapy, intratumoral injection with snail-specific siRNA or anti-TSP1 monoclonal antibody significantly inhibited tumor growth and metastasis following increase of tumor-specific tumor-infiltrating lymphocytes and systemic immune responses. These results suggest that inhibition of Snail-induced EMT could simultaneously suppress both tumor metastasis and immunosuppression in cancer patients. This article was published in Cancer Cell and referenced in Journal of Cancer Science & Therapy

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