類胰蛋白酶通過上調(diào)PAR-2和Rho激酶抑制類風(fēng)濕性關(guān)節(jié)炎滑膜成纖維細(xì)胞凋亡
發(fā)布時(shí)間:2018-08-24 11:36
【摘要】:目的研究類胰蛋白酶(tryptase)對(duì)MH7A類風(fēng)濕性關(guān)節(jié)炎(RA)滑膜成纖維細(xì)胞表面蛋白酶激活受體2(PAR-2)、Rho信號(hào)通路及細(xì)胞凋亡的影響。方法采用流式細(xì)胞術(shù)檢測(cè)MH7A細(xì)胞表面受體PAR-2的表達(dá);異硫氰酸熒光素標(biāo)記的膜聯(lián)素Ⅴ/碘化丙啶(annexinⅤ-FITC/PI)雙標(biāo)記結(jié)合流式細(xì)胞術(shù)檢測(cè)細(xì)胞的凋亡情況;采用Pull-down及Western blot法檢測(cè)MH7A細(xì)胞Rho激酶的表達(dá)變化。結(jié)果類胰蛋白酶能夠上調(diào)MH7A細(xì)胞表面PAR-2的表達(dá),并劑量依賴性的抑制Fas介導(dǎo)的MH7A細(xì)胞的凋亡;同時(shí),PAR-2抑制劑FSLLRY-NH2能夠顯著降低類胰蛋白酶對(duì)MH7A細(xì)胞的抗凋亡作用,其作用與活化Rho激酶的表達(dá)增加有關(guān)。結(jié)論類胰蛋白酶通過上調(diào)PAR-2和活化Rho激酶發(fā)揮很強(qiáng)的抗MH7A細(xì)胞凋亡的作用。
[Abstract]:Objective To investigate the effects of tryptase on the expression of PAR-2, Rho signaling pathway and apoptosis of synovial fibroblasts from patients with rheumatoid arthritis (RA). Results Tryptase could up-regulate the expression of PAR-2 on the surface of MH7A cells and inhibit Fas-mediated apoptosis in a dose-dependent manner. At the same time, PAR-2 inhibitor FSLLRY-NH2 was used to inhibit Fas-mediated apoptosis of MH7A cells. Conclusion Tryptase can inhibit MH7A cell apoptosis by up-regulating PAR-2 and activating Rho kinase.
【作者單位】: 三峽大學(xué)醫(yī)學(xué)院;
【基金】:國(guó)家自然科學(xué)基金(81673665,81274166)
【分類號(hào)】:R593.22
[Abstract]:Objective To investigate the effects of tryptase on the expression of PAR-2, Rho signaling pathway and apoptosis of synovial fibroblasts from patients with rheumatoid arthritis (RA). Results Tryptase could up-regulate the expression of PAR-2 on the surface of MH7A cells and inhibit Fas-mediated apoptosis in a dose-dependent manner. At the same time, PAR-2 inhibitor FSLLRY-NH2 was used to inhibit Fas-mediated apoptosis of MH7A cells. Conclusion Tryptase can inhibit MH7A cell apoptosis by up-regulating PAR-2 and activating Rho kinase.
【作者單位】: 三峽大學(xué)醫(yī)學(xué)院;
【基金】:國(guó)家自然科學(xué)基金(81673665,81274166)
【分類號(hào)】:R593.22
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