Platelet-rich Plasma Promotes the Proliferation of Human Endometrial Mesenchymal Stem Cells (EnMSCs) through the PI3K/AKT/mTOR Signaling Pathway
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摘要:
目的 探讨PRP促进EnMSCs增殖的机制,为EnMSCs的扩增及临床应用提供理论基础。 方法 将EnMSCs随机分为对照组、2%PRP组、2%PRP + LY294002组,CCK-8法检测细胞增殖情况;流式细胞仪监测细胞周期及Western Blot和ELISA检测细胞中p-PI3K、AKT、p-AKT、mTOR及p-mTOR的蛋白表达。 结果 (1) CCK-8结果显示:与对照组相比较,2%PRP组EnMSCs的增殖水平显著较高(P < 0.05);与2%PRP组相比,2%PRP+LY294002组EnMSCs的增殖水平显著较低( P < 0.05);(2)流式细胞仪分析细胞周期结果显示:2%PRP组G2/M期细胞比例显著高于对照组和2%PRP+ LY294002组,G0/G1细胞比例明显低于对照组和2%PRP+ LY294002组,差异均有统计学意义( P < 0.05);(3) 2%PRP组EnMSCs中p-PI3K、AKT、p-AKT、mTOR、p-mTOR的蛋白表达明显高于对照组及2%PRP+LY294002组,差异均有统计学意义( P < 0.05)。 结论 EnMSCs的增殖由PI3K/AKT/ mTOR信号通路调控,PRP通过促进AKT、mTOR的蛋白表达及其磷酸化以激活该通路,促进EnMSCs由G1期向G2期转变,从而促进EnMSCs的增殖。 -
关键词:
- 富血小板血浆 /
- 子宫内膜间充质干细胞 /
- PI3K/AKT/mTOR /
- 细胞增殖 /
- 细胞周期
Abstract:Objective To explore the mechanism of PRP promoting EnMSCs proliferation, and to provide a theoretical basis for the expansion and clinical application of EnMSCs. Methods EnMSCs were randomly divided into the control group, 2%PRP group and 2%PRP + LY294002 group. Cell proliferation was detected by CCK-8 method. Cell cycle was monitored by flow cytometry and protein expressions of p-PI3K, AKT, p-AKT, mTOR and p-mTOR were detected by Western Blot. Results (1) CCK-8 results: Compared with the control group, the proliferation level of EnMSCs in 2%PRP group was significantly higher (P < 0.05). Compared with the 2%PRP group, the proliferation level of EnMSCs in the 2%PRP+LY294002 group was significantly lower ( P < 0.05). (2) The results of cell cycle analysis by flow cytometry showed that the proportion of cells in G2/M phase in the 2% PRP group was significantly higher than that in the control group and 2% PRP+LY294002 group, and the proportion of cells in G0/G1 phase was significantly lower than that in the control group and 2% PRP+ LY294002 group. All of these had statistically significant differences ( P < 0.05). (3) The protein expressions of p-PI3K, AKT, p-AKT, mTOR and p-mTOR in EnMSCs in the 2%PRP group were significantly higher than those in the control group and the 2%PRP+LY294002 group, with statistical significance ( P < 0.05). Conclusion The proliferation of EnMSCs is regulated by the PI3K/Akt/mTOR signaling pathway. PRP activates this pathway by promoting the protein expression and phosphorylation of AKT and mTOR, thereby promoting the proliferation of EnMSCs. -
表 1 3组EnMSCs细胞周期比例(%)比较(n = 3)
Table 1. The EnMSCs cell cycle proportion comparison in the three groups (n = 3)
组别 G1/G0(%) S(%) G2/M(%) 对照组 70.04 ± 2.67 25.49 ± 2.68 4.47 ± 1.04 2%PRP组 54.63 ± 4.23**▲ 30.66 ± 2.85*▲ 14.71 ± 2.72**▲ 2%PRP+ LY294002组 72.16 ± 4.26 17.45 ± 3.49** 10.39 ± 2.84** 与对照组比较,*P < 0.05, **P < 0.01;与2%PRP+ LY294002组比较, ▲P < 0.01。 -
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