野黄芩苷对血管紧张素Ⅱ诱导的新生大鼠心肌成纤维细胞的增殖及ERK1/2、p38 MAPK信号通路的影响
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篇名: 野黄芩苷对血管紧张素Ⅱ诱导的新生大鼠心肌成纤维细胞的增殖及ERK1/2、p38 MAPK信号通路的影响
TITLE:
摘要: 目的:研究野黄芩苷对血管紧张素Ⅱ(Ang Ⅱ)诱导的新生大鼠心肌成纤维细胞(CFs)的增殖及细胞外调节蛋白激酶(ERK1/2)、p38丝裂原活化蛋白激酶(p38 MAPK)信号通路的影响。方法:体外分离培养新生大鼠CFs,将细胞分为空白组(空白培养基)、Ang Ⅱ组(10-7 μmol/L)、50 μmol/L 野黄芩苷组和Ang Ⅱ(10-7 μmol/L)+5、10、20、50 μmol/L 野黄芩苷组,培养48 h后,采用CCK-8法检测细胞增殖能力。另取细胞分为空白组(空白培养基)、Ang Ⅱ组(10-7 μmol/L)和Ang Ⅱ(10-7 μmol/L)+5、10、20、50 μmol/L 野黄芩苷组,培养48 h后,检测细胞中Ⅰ型胶原(ColⅠ)、Col Ⅲ、α-平滑肌肌蛋白(α-SMA) mRNA 表达和细胞培养液中羟脯氨酸(HYP)含量,以及细胞中ERK1/2、p38 MAPK磷酸化水平。结果:5、10、20、50 μmol/L 的野黄芩苷均能显著抑制Ang Ⅱ诱导的CFs的增殖(P<0.05),显著下调Ang Ⅱ刺激的CFs中ColⅠ、Col Ⅲ和α-SMA mRNA的表达(P<0.05),显著抑制Ang Ⅱ刺激后细胞培养液中HYP含量的增加和细胞中ERK1/2、p38 MAPK的磷酸化(P<0. 05),且具有一定的浓度依赖性。结论:野黄芩苷对Ang Ⅱ诱导的CFs的增殖具有一定的抑制作用,其机制可能与抑制ERK1/2、p38 MAPK的磷酸化有关。
ABSTRACT: OBJECTIVE: To study the effects of scutellarin on the proliferation of cardiac fibroblasts (CFs) in neonate rats induced by angiotensin Ⅱ (ANGⅡ) and signal pathway of extracellular regulated protein kinase (ERK1/2) and p38 mitogen activated protein kinase (p38 MAPK). METHODS: CFs of neonatal rat were isolated and cultured in vitro, and then divided into blank group (blank culture medium), Ang Ⅱ group (10-7 μmol/L),50 μmol/L scutellarin group and Ang Ⅱ(10-7 μmol/L)+5, 10, 20, 50 μmol/L scutellarin groups. After cultured for 48 h, CCK-8 assay was used to detect the proliferation ability of cells. Other cells were selected and divided into blank group (blank culture medium), Ang Ⅱ group (10-7 μmol/L) and Ang Ⅱ+5, 10, 20, 50 μmol/L scutellarin groups. After cultured for 48 h, mRNA expression of ColⅠ, Col Ⅲ and α-SMA in cells and hydroxyproline (HYP) content in cell culture fluid were detected; phosphorylation levels of ERK1/2 and p38 MAPK in cells were also detected. RESULTS: 5, 10, 20, 50 μmol/L scutellarin could significantly inhibit the proliferation of CFs induced by Ang Ⅱ (P<0.05), and decreased mRNA expression of ColⅠ, Col Ⅲ and α-SMA in CFs induced Ang Ⅱ (P<0.05). 5, 10, 20, 50 μmol/L scutellarin could significantly inhibit the increase of HYP content and the phosphorylation of ERK1/2 and p38 MAPK after induced by Ang Ⅱ (P<0.05), in dose-dependent manner. CONCLUSIONS: Scutellarin inhibits the proliferation of CFs induced by Ang Ⅱ, the mechanism of which may be associated with reduction of ERK1/2 and p38 MAPK phosphorylation.
期刊: 2018年第29卷第5期
作者: 辛博,陈力,万丽丽,郭澄
AUTHORS: XIN Bo,CHEN Li,WAN Lili,GUO Cheng
关键字: 野黄芩苷;大鼠心肌成纤维细胞;增殖;细胞外调节蛋白激酶;p38丝裂原活化蛋白激酶
KEYWORDS: Scutellarin; Cardiac fibroblasts of rats; Proliferation; Extracellular regulated protein kinase; p38 mitogen activated protein kinase
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