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  • Title: LncRNA SNHG16 promotes colorectal cancer cell proliferation, migration, and epithelial-mesenchymal transition through miR-124-3p/MCP-1.
    Author: Chen ZY, Wang XY, Yang YM, Wu MH, Yang L, Jiang DT, Cai H, Peng Y.
    Journal: Gene Ther; 2022 Apr; 29(3-4):193-205. PubMed ID: 32859986.
    Abstract:
    Colorectal cancer (CRC) has been the third leading cause of cancer-associated deaths. LncRNA SNHG16 is reported to be involved in metastasis of CRC cells. However, the mechanism by which SNHG16 regulates CRC progression is poorly understood. The proliferation of CRC cells was examined by MTT. Wound healing and transwell assay were used to measure migration and invasion ability. RT-qPCR and western blot were used to examine gene expression. Immunofluorescence was conducted to evaluate the EMT of CRC cells. Luciferase reporter assay were used to confirm direct interaction between miR-124-3p and SNHG16 or MCP-1. The interaction between miR-124-3p and SNHG16 was detected by RIP and RNA pull down assay. H&E staining was used to test the histomorphological changes of hepatic metastatic nodules. Finally, xenograft tumor experiment was utilized to determine tumor growth in vivo. SNHG16 and miR-124-3p were dysregulated in human colorectal tumors or cells. Knockdown of SNHG16 led to attenuate cell proliferation, migration, invasion, and EMT of CRC cells. And xenograft tumor experiment showed that SNHG16 might influence tumor growth. In contrast, miR-124-3p exerted the antitumor effects. Knockdown of miR-124-3p can reverse the effect of sh-SNHG16 on CRC cells. miR-124-3p could directly bind to SNHG16 or MCP-1. More importantly, MCP-1 acts as a critical effector mediating the role of SNHG16/ miR-124-3p in CRC cells. In summary, our data suggest that SNHG16 plays a contributory role in proliferation, migration, and EMT of CRC cells via miR-124-3p/MCP-1 axis, which offers a rationale for targeting SNHG16 and developing therapeutic drugs to treat CRC.
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