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doi:10.1126/science.1248627
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PMID:

Direct in Vivo RNAi Screen Unveils Myosin IIa as a Tumor Suppressor of Squamous Cell Carcinomas

Daniel Schramek,et al.

Mining modern genomics for cancer therapies is predicated on weeding out ¡°bystander¡± alterations (nonconsequential mutations) and identifying ¡°driver¡± mutations responsible for tumorigenesis and/or metastasis. We used a direct in vivo RNA interference (RNAi) strategy to screen for genes that upon repression predispose mice to squamous cell carcinomas (SCCs). Seven of our top hits¡ªincluding Myh9, which encodes nonmuscle myosin IIa¡ªhave not been linked to tumor development, yet tissue-specific Myh9 RNAi and Myh9 knockout trigger invasive SCC formation on tumor-susceptible backgrounds. In human and mouse keratinocytes, myosin IIa¡¯s function is manifested not only in conventional actin-related processes but also in regulating posttranscriptional p53 stabilization. Myosin IIa is diminished in human SCCs with poor survival, which suggests that in vivo RNAi technology might be useful for identifying potent but low-penetrance tumor suppressors.
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Direct in Vivo RNAi Screen Unveils Myosin IIa as a Tumor Suppressor of Squamous Cell Carcinomas

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  • 2014-01-22 18:24:21, 1.21 M
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2Â¥: Originally posted by HYZ221314 at 2014-01-22 18:23:31
Direct in Vivo RNAi Screen Unveils Myosin IIa as a Tumor Suppressor of Squamous Cell Carcinomas

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