Ectopic overexpression of GRK5 promotes malignant glioma progression closely associated with MSN-CD44 expression and glioma localization

Author:

Yang Yang1,Xi Zhiyu1,Wu Jing-Jing2,Ni Shengyuan1,Ling Shiying1

Affiliation:

1. The First Affiliated Hospital of USTC: Anhui Provincial Hospital

2. Second Affiliated Hospital of Anhui Medical University

Abstract

Abstract Background Gliomas are highly invasive and lack of effective targeted therapy. GRK5 is involved in several pathologic conditions including cancer. GRK5 phosphorylated MSN on T66 and regulated the subcellular distribution of MSN, which was a glioma progression marker that induces proliferation via interaction with CD44. Therefore, targeting GRK5-MSN-CD44 may provide a novel approach for the treatment of gliomas. Materials and methods GRK5-knockdown and GRK5-upregulated glioma cell lines were generated by using the lentivirus transfection method. The GRK5 and MSN expression and the association with the malignant characters in glioma were determined by Western blot and qRT-PCR. By using double-immunofluorescence and triple immunofluorescence analysis, the subcellular localization and distribution characteristics of GRK5-MSN-CD44 in gliomas were detected. The cell proliferation, migration, invasion and apoptosis were determined by CCK-8 assay, wound healing assay, transwell assay and flow cytometry respectively. Results GRK5 expression was up-regulated in human gliomas and positively correlated with MSN expression. GRK5-MSN and MSN-CD44 were found co-expressed in gliomas respectively. GRK5-MSN-CD44 were co-localized in the membrane of glioma cell and abundant in glioma stem cell niches. VEGF and N-cadherin expressions were increased/decreased according to the up-regulation/down-regulation of GRK5. And Bax expression showed decreased/increased according to GRK5 over-expression/low-expression. The proliferation, migration and invasion of glioma cells were improved due to the upregulation of GRK5. And the apoptosis of glioma cells was decreased/increased due to the up-regulation/down-regulation of GRK5. Conclusion Ectopic overexpression of GRK5 promoted the malignant progression of glioma and is closely related to MSN-CD44 interaction. GRK5-MSN-CD44 provides a new idea for gene targeted therapy of glioma.

Publisher

Research Square Platform LLC

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3