Tuesday, May 12, 2015

Fly cancer model study--linking cell polarity, JNK signaling and the GTPase Rho1

Ma X, Chen Y, Zhang S, Xu W, Shao Y, Yang Y, Li W, Li M, Xue L. Rho1-Wnd signaling regulates loss-of-cell polarity-induced cell invasion in Drosophila. Oncogene. 2015 May 11. PMID: 25961917.

From the abstract: "Both cell polarity and c-Jun N-terminal kinase (JNK) activity are essential to the maintenance of tissue homeostasis, and disruption of either is commonly seen in cancer progression. ... We show that Wallenda (Wnd), a protein kinase of the mitogen-activated protein kinase kinase kinase family, by forming a complex with the GTPase Rho1, is both necessary and sufficient for Rho1-induced JNK-dependent cell invasion, MMP1 activation and epithelial-mesenchymal transition. ... our data not only provides a novel mechanistic insight on how cell polarity loss contributes to cell invasion, but also highlights the value of the Drosophila model system to explore human cancer biology."

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