NDLI: Expression of miR-126 suppresses migration and invasion of colon cancer cells by targeting CXCR4

Content Provider	Springer Nature Link
Author	Li, Zeng Li, Nan Wu, Minghua Li, Xiayu Luo, Zhaohui Wang, Xiaoyan
Copyright Year	2013
Abstract	A previous study demonstrated that miR-126 expression was significantly downregulated in highly metastatic colon cancer cells. This study was to investigate the biological function of miR-126 and its regulation of target genes in colon cancer cells. Quantitative PCR was used to detect miR-126 expression in colon cancer SW480 and SW620 cells. MTT assay was to measure the changed cell viability after miR-126 mimics transfection. Wound healing and Transwell migration and invasion assays measured capacity of tumor cell migration and invasion of SW480 and SW620 cells after miR-126 transfection. Luciferase reporter assay and Western blot were used to assess both transcriptional and expression levels of one of the miR-126 target genes (i.e., CXCR4). Levels of miR-126 expression were lower in colon cancer SW480 and SW620 cells than in the adjacent normal epithelial tissues (P < 0.05). Transfection of miR-126 mimics significantly reduced colon cancer cell viability compared to NC cells (P < 0.05). The wound healing and Transwell migration and invasion assays showed that miR-126 mimics inhibited SW480 and SW620 cell migration and invasion capacity. Bioinformatics predicted that CXCR4 is one of the miR-126 target genes. Indeed, luciferase reporter assay and Western blot confirmed that CXCR4 is a miR-126 target gene. Expression of miR-126 inhibited colon cancer cell viability and reduced tumor cell migration and invasion capacity by its negative regulation of CXCR4 expression.
Starting Page	233
Ending Page	242
Page Count	10
File Format	PDF
ISSN	03008177
Journal	Molecular and Cellular Biochemistry
Volume Number	381
Issue Number	1-2
e-ISSN	15734919
Language	English
Publisher	Springer US
Publisher Date	2013-06-07
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Colorectal cancer miR-126 Tumor cell migration and invasion CXCR4 Biochemistry Medical Biochemistry Oncology Cardiology
Content Type	Text
Resource Type	Article
Subject	Cell Biology Medicine Clinical Biochemistry Molecular Biology

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