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首页> 外文期刊>PLoS Genetics >The RhoJ-BAD signaling network: An Achilles’ heel for BRAF mutant melanomas
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The RhoJ-BAD signaling network: An Achilles’ heel for BRAF mutant melanomas

机译:RhoJ-BAD信号网络:BRAF突变黑素瘤的致命弱点

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摘要

Genes and pathways that allow cells to cope with oncogene-induced stress represent selective cancer therapeutic targets that remain largely undiscovered. In this study, we identify a RhoJ signaling pathway that is a selective therapeutic target for BRAF mutant cells. RhoJ deletion in BRAF mutant melanocytes modulates the expression of the pro-apoptotic protein BAD as well as genes involved in cellular metabolism, impairing nevus formation, cellular transformation, and metastasis. Short-term treatment of nascent melanoma tumors with PAK inhibitors that block RhoJ signaling halts the growth of BRAF mutant melanoma tumors in vivo and induces apoptosis in melanoma cells in vitro via a BAD-dependent mechanism. As up to 50% of BRAF mutant human melanomas express high levels of RhoJ, these studies nominate the RhoJ-BAD signaling network as a therapeutic vulnerability for fledgling BRAF mutant human tumors.
机译:允许细胞应对癌基因诱导的压力的基因和途径代表了选择性的癌症治疗靶标,至今仍未被发现。在这项研究中,我们确定了RhoJ信号通路,它是BRAF突变细胞的选择性治疗靶标。 BRAF突变黑素细胞中的RhoJ缺失可调节促凋亡蛋白BAD的表达以及参与细胞代谢,损害痣形成,细胞转化和转移的基因。用阻断RhoJ信号传导的PAK抑制剂短期治疗新生黑色素瘤肿瘤,可通过体内BAD依赖性机制阻止BRAF突变型黑色素瘤肿瘤在体内的生长,并在体外诱导黑色素瘤细胞凋亡。由于多达50%的BRAF突变型人黑素瘤表达高水平的RhoJ,因此这些研究将RhoJ-BAD信号网络提名为新兴的BRAF突变型人肿瘤的治疗易感性。

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