案例解析
SRSF6調(diào)控可變剪接促進(jìn)腫瘤進(jìn)展,為結(jié)直腸癌(CRC)提供治療靶點(diǎn)
SRSF6-regulated alternative splicing that promotes tumour progression offers a therapy target for colorectal cancer 設(shè)計(jì):對(duì)311個(gè)CRC樣本、癌癥基因組圖譜和基因表達(dá)綜合數(shù)據(jù)庫(kù)(GEO)數(shù)據(jù)庫(kù)中SRSF6的表達(dá)進(jìn)行全面分析。通過(guò)RIP-seq鑒定SRSF6調(diào)控的可變剪接(AS)及其結(jié)合位點(diǎn),并通過(guò)凝膠遷移和微基因報(bào)告實(shí)驗(yàn)進(jìn)行驗(yàn)證。 結(jié)果:SRSF6在CRC樣本中上調(diào),并與不良預(yù)后相關(guān),在體外和體內(nèi)促進(jìn)增殖和轉(zhuǎn)移。鑒定出SRSF6調(diào)控的AS靶標(biāo),并揭示SRSF6結(jié)合位點(diǎn)。SRSF6通過(guò)直接結(jié)合到其23號(hào)外顯子位點(diǎn)來(lái)調(diào)控ZO-1異常剪接,從而作為癌基因發(fā)揮作用。Indacaterol被鑒定為SRSF6抑制劑,以抑制CRC腫瘤發(fā)生。 結(jié)論:SRSF6通過(guò)調(diào)控AS介導(dǎo)促進(jìn)CRC進(jìn)展,Indacaterol通過(guò)靶向SRSF6被定位為抗腫瘤藥物。
RIP-seq鑒定SRSF6調(diào)控的AS事件和RNA結(jié)合motif
參考文獻(xiàn):
Wan L, Yu W, Shen E, et alSRSF6-regulated alternative splicing that promotes tumour progression offers a therapy target for colorectal cancer.Gut 2019;68:118-129.