Study of inhibitory effect of formononetin on human renal carcinoma cell 786-O and its mechanism
CHEN Qing1 LI Haihong2 OU Weining1 ZHANG Xing3
1.Department of Nephrology, the Second People’s Hospital of Yulin, Guangxi Zhuang Autonomous Region, Yulin 537000, China;
2.Department of Quality Control, the First People’s Hospital of Yulin, Guangxi Zhuang Autonomous Region, Yulin 537000, China;
3.Key Laboratory of Tumor Immunology and Microenvironmental Regulation, Guilin Medical University, Guangxi Zhuang Autonomous Region, Guilin 541100, China
Abstract：Objective To observe the inhibitory effect of formononetin on human renal carcinoma cell 786-O and its mechanism. Methods Human renal carcinoma cell 786-O cultured with different doses of formononetin. They were divided into control group (0 μmol/L, group A), formononetin low-dose group (20 μmol/L, group B), formononetin medium-dose group (40 μmol/L, group C), and formononetin high-dose group (80 μmol/L, group D) according to drug dose. CCK8 method was used to detect the proliferation of four group; apoptosis was detected by flow cytometry and Hoechst staining; the expression of miR-155 was detected by RT-PCR; the protein expressions of P-PI3K and P-AKT were detected by Western blot. Results After 72 h of culture, the inhibitory rate of cell proliferation in groups B, C and D were higher than those in 24 and 48 h of culture. After 48 h of culture, the inhibitory rate of cell proliferation in groups B, C and D were higher than those in 24 h of culture, and the differences were statistically significant (all P < 0.05). After 24, 48 and 72 h of culture, the inhibitory rate of cell proliferation in groups B, C and D were higher than those in group A; groups C and D were higher than that in group B; and group D was higher than that in group C, and the differences were statistically significant (all P < 0.05). The apoptosis rate of four groups were statistically significant (P < 0.05). In group B, C and D, cell shrinkage and nucleus were observed， and the higher the drug dose was, the more obvious the cell apoptosis was; the nucleus of group A was complete and full in morphology. The expression of miR-155 level and P-PI3K and P-AKT proteins levels in groups B, C and D were lower than those in group A, the expression miR-155 level and P-PI3K and P-AKT proteins levels in groups C and D were lower than those in group B, and the expression miR-155 level and P-PI3K and P-AKT proteins levels in group D was lower than that in group C, and the differences were statistically significant (all P < 0.05). Conclusion Formononetin can significantly inhibit proliferation and induce apoptosis in human renal carcinoma cell 786-O, and the mechanism may be related to the down-regulation of miR-155 expression to inhibit the activation of PI3K/AKT signaling pathway.
陈庆1 李海虹2 欧伟宁1 张幸3. 芒柄花黄素对人肾癌细胞786-O的抑制作用及机制研究[J]. 中国医药导报, 2021, 18(12): 11-15,19.
CHEN Qing1 LI Haihong2 OU Weining1 ZHANG Xing3. Study of inhibitory effect of formononetin on human renal carcinoma cell 786-O and its mechanism. 中国医药导报, 2021, 18(12): 11-15,19.
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