کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2042218 1073189 2014 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Parallel In Vivo and In Vitro Melanoma RNAi Dropout Screens Reveal Synthetic Lethality between Hypoxia and DNA Damage Response Inhibition
ترجمه فارسی عنوان
نمایش نتایج: از شماره 1 تا 1، از مجموع 1 نمایش نتایج: از شماره 1 تا 1، از مجموع 1
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم کشاورزی و بیولوژیک (عمومی)
چکیده انگلیسی


• Parallel in vitro and in vivo RNAi screens identify specific tumor dependencies
• DDR kinases are activated following hypoxia during tumor expansion
• Tumor growth is dependent on DDR kinase activity
• A “druggable” synthetic lethal relationship exists between DDR inhibition and hypoxia

SummaryTo identify factors preferentially necessary for driving tumor expansion, we performed parallel in vitro and in vivo negative-selection short hairpin RNA (shRNA) screens. Melanoma cells harboring shRNAs targeting several DNA damage response (DDR) kinases had a greater selective disadvantage in vivo than in vitro, indicating an essential contribution of these factors during tumor expansion. In growing tumors, DDR kinases were activated following hypoxia. Correspondingly, depletion or pharmacologic inhibition of DDR kinases was toxic to melanoma cells, including those that were resistant to BRAF inhibitor, and this could be enhanced by angiogenesis blockade. These results reveal that hypoxia sensitizes melanomas to targeted inhibition of the DDR and illustrate the utility of in vivo shRNA dropout screens for the identification of pharmacologically tractable targets.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: - Volume 9, Issue 4, 20 November 2014, Pages 1375–1386
نویسندگان
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