本文關鍵詞： 胃促生長素 肌 平滑 血管 主動脈 人主動脈平滑肌細胞 增殖 線粒體融合蛋白-　出處：《重慶醫(yī)學》2017年15期 　論文類型：期刊論文

【摘要】：目的通過體外培養(yǎng)人主動脈平滑肌細胞(HASMCs),研究胃促生長素(ghrelin)對血管平滑肌細胞(VSMC)增殖及線粒體融合蛋白2(Mfn-2)表達的影響。方法體外培養(yǎng)HASMCs,第4~6代細胞用于試驗。給予不同濃度(10~(-9)、10~(-8)、10~(-7)、10~(-6)、10~(-5) mol/L)的ghrelin或10~(-6) mol/L ghrelin不同時間(0、6、12、18、24h)處理,用四甲基偶氮唑藍比色(MMT)法觀察其對HASMC增殖的影響。RT-PCR,Western blot方法檢測不同處理方法對Mfn-2表達的影響。結果 10~(-7)~10~(-5) mol/L的ghrelin可明顯抑制HASMC增殖,濃度為10~(-6) mol/L抑制作用最為明顯(P0.01)。ghrelin在6~24h內(nèi)均能明顯抑制HASMC增殖,在24h達最高峰(P0.01)。10~(-6) mol/L ghrelin能明顯上調(diào)Mfn-2 mRNA和蛋白的表達(P0.01)。10~(-6)mol/L ghrelin在18h上調(diào)Mfn-2mRNA和蛋白表達的作用最為明顯(P0.01)。結論 ghrelin可能通過上調(diào)Mfn-2的表達來抑制HASMC增殖。
[Abstract]:Objective to study the effects of ghrelin on the proliferation of vascular smooth muscle cells (VSMCs) and the expression of mitochondrial fusion protein 2Mfn-2 in cultured human aortic smooth muscle cells (HASMCs) in vitro. Methods HASMCswere cultured in vitro, and the 4th generation of HASMCswere used to test the effects of ghrelin on the proliferation of vascular smooth muscle cells (VSMCs) and the expression of mitochondrial fusion protein 2Mfn-2. Ghrelin or mol/L ghrelin with different concentrations of 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, The effect of mol/L on the proliferation of HASMC was observed by MTT assay. The effect of different treatments on the expression of Mfn-2 was detected by RT-PCRX Western blot. Results the ghrelin of mol/L could significantly inhibit the proliferation of HASMC. The inhibitory effect of mol/L on HASMC proliferation was most obvious at the concentration of 10g / L -6) P0.01C. Ghrelin could significantly inhibit the proliferation of HASMC within 6h after treatment. At 24 h, the expression of Mfn-2mRNA and protein could be upregulated by P0.01L / L ghrelin. Ghrelin may inhibit the proliferation of HASMC by upregulating the expression of Mfn-2 and P0.01mol / L ghrelin at 18h. Conclusion the expression of ghrelin may inhibit the proliferation of HASMC by upregulating the expression of Mfn-2.
【作者單位】： 第三軍醫(yī)大學新橋醫(yī)院心血管內(nèi)科;
【分類號】：R54
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本文編號：1517097