Abstract:Objective To investigate the effect of microRNA-4298 (miR-4298) on proliferation, migration and invasion of multiple myeloma cells and its possible mechanism. Methods Fluorescence quantitative PCR (qPCR) was used to detect the expression level of miR-4298 in multiple myeloma cell lines (U-266, SKO-007, RPMI-8226); RPMI-8226 cells were randomly divided into the control group (conventional cultured cells), the miR -NC group (negative control of miR-4298 transfection), and the miR-4298 group (miR-4298 mimic transfection); qPCR detection of transfection effect, using cell count (CCK-8), cell scratch and Transwell test respectively RPMI-8226 cell proliferation, migration and invasion ability, TargetScan prediction, dual luciferase reporter gene verification miR-4298 and transforming growth interaction factor 2 (IGFIF2) targeting relationship; Western blot detection of TGIF2 protein levels.Results The expression of miR-4298 in multiple myeloma cell lines (U-266, SKO-007, RPMI-8226) were down-regulated (P<0.05). Up-regulation of miR-4298 inhibited the proliferation of RPMI-8226 cells (P<0.05), and decreased the migration and invasion of RPMI-8226 cells (P<0.05). TGIF2 was the downstream target gene of miR-4298. miR-4298 was negatively correlated with TGIF2 protein level. Up-regulation of TGIF2 could reverse the inhibitory effect of miR-4298 on proliferation, migration and invasion of RPMI-8226 cells. Conclusion miR-4298 is down-regulated in multiple myeloma cell lines, which may inhibit the proliferation, migration and invasion of RPMI-8226 cells by inhibiting TGIF2.
杜经柱,陈奇,尹浩,李锋. miR-4298靶向TGIF2影响多发性骨髓瘤细胞的增殖和迁移的机制研究[J]. 肿瘤代谢与营养电子杂志, 2020, 7(2): 225-230.
Du Jingzhu, Chen Qi, Yin Hao, Li Feng. Study on the mechanism of miR-4298 targeting TGIF2 influencing the proliferation and migration of multiple myeloma cells. Electron J Metab Nutr Cancer, 2020, 7(2): 225-230.
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