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1篇 您的检索式:作者名="Quantong Deng"
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1Long non-coding RNA LINC-PINT attenuates paclitaxel resistance in triple-negative breast cancer cells via targeting the RNA-binding protein NONO显示文摘The treatment of triple-negative breast cancer(TNBC)relies largely on chemotherapies.However,it is frequent that TNBC patients develop resistance to the chemotherapy drugs.Generation of drug-resistant cell lines facilitates the identification of drug resistance.Here,we established two paclitaxel(PTX)-resistant TNBC cancer cell lines using an intermittent and stepwise method and found that long non-coding RNA long intergenic non-protein-coding RNA p53-induced transcript(LINC-PINT)was significantly decreased in PTX-resistant cancer cells.Ectopic expression of LINC-PINT sensitized both PTX-resistant TNBC and wild-type TNBC to PTX.Moreover,RNA immunoprecipitation showed that LINC-PINT bound to RNA-binding protein NONO.Overexpression of LINC-PINT resulted in the degradation of NONO in a proteasome-dependent manner and vice versa.Knockdown of NONO with siRNA sensitized TNBC to PTX.We further analyzed the expression level of LINC-PINT and NONO in patient samples via online database and found that LINC-PINT and NONO may function antagonistically in all types of breast cancers.Taken together,our data illustrated a tumor suppressor role of LINC-PINT in sensitizing TNBC to chemotherapies via destabilizing NONO.Jinghua Chen Meiqin Zhu Liqiu Zou Junxian Xia Jiacheng Huang Quantong Deng Ruilian Xu 2020Acta Biochimica et Biophysica Sinica2020,52,8:4
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