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Cell Physiol Biochem:通过靶向CCNG2,外泌体miR-1246可促进乳腺癌的进展

2017-12-09 MedSci MedSci原创

乳腺癌的治疗仍然面临着巨大挑战挑战。本研究旨在验证外泌体microRNA-1246(miR-1246)作为乳腺癌的血清生物标志物,并了解乳腺癌进展的内在机制。采用实时定量PCR检测内源性和外源性miRNA的表达水平,使用Western blot检测目的蛋白的表达水平。使用扫描电镜和共聚焦显微镜来表征外泌体,并研究其摄取和转移。萤光素酶报告基因质粒及其突变体用于确认其靶目标。此外,通过侵袭测定和细胞

乳腺癌的治疗仍然面临着巨大挑战挑战。本研究旨在验证外泌体microRNA-1246(miR-1246)作为乳腺癌的血清生物标志物,并了解乳腺癌进展的内在机制。

采用实时定量PCR检测内源性和外源性miRNA的表达水平,使用Western blot检测目的蛋白的表达水平。使用扫描电镜和共聚焦显微镜来表征外泌体,并研究其摄取和转移。萤光素酶报告基因质粒及其突变体用于确认其靶目标。此外,通过侵袭测定和细胞活力测定来评估外泌体miR-1246的功能意义。

结果显示,携带microRNA的外泌体可以通过直接摄取在不同的细胞系中转移。与非转移性乳腺癌细胞或非恶性乳腺细胞相比,转移性乳腺癌MDA-MB-231细胞中miR-1246高度表达。此外,miR-1246可抑制其靶基因Cyclin-G2(CCNG2)的表达水平,表明其功能意义。最后,使用来自MDA-MB-231细胞的外泌体处理可以增强非恶性HMLE细胞的生存力、迁移和化疗耐受性。

总之,该研究结果支持外泌体和外泌体miRNA在调节乳腺肿瘤进展中的重要作用,突出了它们在基于miRNA的治疗剂中的应用的潜力。

原始出处:


Li XJ, Ren ZJ, Tang JH, Yu Q. Exosomal MicroRNA MiR-1246 Promotes Cell Proliferation, Invasion and Drug Resistance by Targeting CCNG2 in Breast Cancer. Cell Physiol Biochem. 2017 Dec 6;44(5):1741-1748. doi: 10.1159/000485780.

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    2018-03-18 维他命
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    2018-07-12 一叶知秋
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    2018-10-23 smallant2002

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