Journal
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
Volume 557, Issue -, Pages 228-235Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.bbrc.2021.04.018
Keywords
Colorectal cancer; Proliferation; lncRNA-cCSC1; miR-124-3p; CD44
Categories
Funding
- National Natural Science Foundation of China [81572319]
- Colorectal Cancer Prevention and Treatment Project of Health Commission of Chongqing [2019ZX003]
- Key Research & Development and Promotion of Special Project (Scientific Problem Tackling) of Henan Province [202102310122]
- Joint Coconstruction Project of Henan Medical Science and Technology Research Plan [LHGJ20200342]
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The study demonstrated that lncRNA-cCSC1 promotes cell proliferation in colorectal cancer by interacting with miR-124-3p and upregulating the expression of CD44.
LncRNA-cCSC1 is highly expressed in colorectal cancer (CRC). The study was designed to evaluate the function and mechanism of lncRNA-cCSC1 in cell proliferation of CRC. RT-PCR was used to measure the expression levels of lncRNA-cCSC1 in CRC cell lines. CCK-8, colony formation, EdU staining, flow cytometry and Western blot were performed to examine the effect of interference with lncRNA-cCSC1 expression on cell proliferation. miR-124-3p and the target genes of miR-124-3p were investigated using bioinformatics analysis and verified by dual-luciferase reporter, RT-PCR and Western blot. Rescue experiments were carried out to confirm the role of miR-124-3p in cell proliferation of CRC. Our results showed that cell proliferation of CRC was promoted by lncRNA-cCSC1 upregulation and inhibited by lncRNA-cCSC1 downregulation. In addition, miR-124-3p is predicted to be the target of lncRNA-cCSC1 and is negatively correlated with lncRNA-cCSC1. Moreover, the addition of miR-124-3p mimics or inhibitor reversed the effects induced by lncRNA-cCSC1 overexpression or silencing on cell proliferation of CRC. Additionally, lncRNA-cCSC1 regulated the expression level of CD44, a target gene of miR-124-3p. Finally, we studied the effects of the lncRNA-cCSC1/miR-124-3p axis on CD44. These results indicate that lncRNA-cCSC1 promotes cell proliferation of CRC through sponging miR-124-3p and upregulating CD44. (c) 2021 Elsevier Inc. All rights reserved.
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