江南大学糖化学与生物技术教育部重点实验室,江南大学糖化学与生物技术教育部重点实验室,江南大学糖化学与生物技术教育部重点实验室,江南大学糖化学与生物技术教育部重点实验室
国家自然科学基金面上项目(81672537)和江苏省自然科学基金(BK20160173)资助项目
The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology,Jiangnan University,The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology,Jiangnan University,The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology,Jiangnan University,The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology,Jiangnan University
This work was supported by grants from The National Natural Science Foundation China (81672537) and The Natural Science Foundation of Jiangsu Province, China (BK20160173)
蛋白质糖基化是蛋白质翻译后修饰之一,对蛋白质功能有重要的调节作用,而异常糖基化在肿瘤的发生、发展以及癌细胞转移过程中起到关键作用.MiRNAs在癌症的发生发展过程中同样起到非常关键的作用,但其如何影响糖基化进而在肿瘤恶性转化过程中发挥生物学功能的研究甚少.本文将miR-10b在人正常乳腺上皮细胞MCF10A中过表达,利用糖类相关基因芯片系统筛选了发生显著变化的糖基转移酶;随后利用本实验室建立的N-糖链及O-糖链测定方法,分析糖链水平的表达差异;最后对关键糖基转移酶基因Fut8、MGAT3及OGT通过荧光定量PCR、蛋白质免疫印迹和凝集素免疫印迹进行了验证,为研究miR-10b在乳腺癌中的作用提供更多糖组学方面的理论基础.
Protein glycosylation is a common post-translation modification and plays important roles in regulation of protein function. Especially, the abnormal glycosylation plays a critical role in the development and progression of tumor and the metastasis of cancer cells. MiRNAs also play a key role in the development and progression of cancer, but the mechanism how miRNAs affect on the biological functions and induce tumor malignant transformation via glycosylation needs further illustrated. In this study, the expression of glycosyltransferases were analyzed using glycan-related gene chip in miR-10b-overexpressed human normal mammary epithelial cells MCF10A. Then, the alteration of N-glycan and O-glycan was analyzed using the methods established in our laboratory. The expression of glycosyltransferase gene Fut8, MGAT3 and OGT and corresponding glycans were evaluated by qRT-PCR, Western blotting and lectin blotting. Taken together, our results provide the theoretical basis of glycomics on the role of miR-10b in breast cancer.
国东,郭佳,武艳丽,关锋. miR-10b对MCF10A细胞表达N-糖链 及O-糖链的影响[J].生物化学与生物物理进展,2017,44(4):338-346
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