姜黄素对TGF-β_2刺激下小鼠肺成纤维细胞PPAR-γ/PDGF-β信号通路的影响  被引量:7

Effect of Curcumin on TGF-β_2 Regulated PPAR-γ/PDGF-β Signaling Pathway in Lung Fibroblasts of Mice

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作  者:龚玲[1] 刘代顺[1] 林江[1] 吴杨[1] 朱红兰[1] 

机构地区:[1]遵义医学院第三附属医院日乎吸内科,贵州563002

出  处:《中国中西医结合杂志》2015年第10期1249-1254,共6页Chinese Journal of Integrated Traditional and Western Medicine

基  金:贵州省中医药管理局中医药、民族医药科学技术研究专项课题(No.QZYY-2014-010)

摘  要:目的探讨姜黄素对转化生长因子(TGF-β_2)刺激下小鼠肺成纤维细胞过氧化物酶体增殖物活化受体-γ(PPAR-γ)/血小板衍生生长因子β(PDGF-β)信号通路的影响。方法体外培养小鼠肺成纤维细胞(C57BL/6),采用细胞生长计数板检测空白组、姜黄素组(姜黄素5、25、50μmol/L)、TGF-β_2组(10 ng/mL)及TGF-β_2加姜黄素组(TGF-β_2 10 ng/mL及姜黄素5、25、50μmol/L)细胞数;逆转录PCR检测空白组、TGF-β_2组(10 ng/mL)及TGF-β_2加姜黄素组(TGF-β_2 10 ng/mL及姜黄素5、25、50μmol/L)PPAR-γ、PDGFR-β及FGFR1m RNA转录水平;Western blot法及ELISA法检测空白组、TGF-β_2组(10 ng/m L)及TGF-β_2加姜黄素50μmol/L组(TGF-β_2 10 ng/mL及姜黄素50μmol/L)PPAR-γ蛋白表达及胶原蛋白-1水平。结果与空白组比较,姜黄素组50μmol/L时在48、72 h时对细胞增殖抑制最明显;与TGF-β_2组比较,TGF-β_2加姜黄素组50μmol/L时同样在48 h、72 h时对细胞增殖抑制最明显。与空白组比较,TGF-β_2组PPAR-γ、PDGF-βmRNA表达及PPAR-γ蛋白表达升高,胶原蛋白-1表达增加(P<0.05)。与TGF-β_2组比较,TGF-β_2加姜黄素组25、50μmol/L时PPAR-γmRNA表达水平明显升高,且高于TGF-β_2加姜黄素组5μmol/L时(P<0.05),而TGF-β_2加姜黄素组50μmol/L时PPAR-γmRNA表达水平高于TGF-β_2加姜黄素组25μmol/L时(P<0.05)。TGF-β_2加姜黄素组各浓度PDGF-βmRNA表达低于TGF-β_2组(P<0.05),且TGF-β_2加姜黄素组50μmol/L时PDGF-βmRNA表达低于TGF-β_2加姜黄素组5、25μmol/L时(P<0.05)。TGF-β_2组及TGF-β_2加姜黄素组各浓度FGFR1mRNA表达水平比较,差异无统计学意义(P>0.05)。与TGF-β_2组比较,TGF-β_2加姜黄素50μmol/L组PPAR-γ蛋白表达升高,胶原蛋白-1表达降低(P<0.05,P<0.01)。结论姜黄素不仅抑制TGF-β_2诱导的小鼠肺成纤维细胞增殖,而且还抑制胶原合成,其可能与使PPAR-γ表达上调及PDGF-β表达下调相关。因此,姜黄素可能是通过PPAR-γ/PDGF-β信号通路阻止肺�Objective To explore the effect of curcumin on TGF-β_2 regulated peroxisome proliferater activated receptor γ(PPAR-γ)/platelet derived growth factor β(PDGF-β) signaling pathway in lung fibroblasts of mice.Methods C57BL/6 mouse lung fibroblasts were in vitro cultured with TGF-β_2,curcumin,or TGF-β_2 plus curcumin.The cell proliferation was detected by cell growth counting in the blank control group,low,middle,and high dose curcumin groups(5,25,50 μmol/L),the TGF-β_2(10 ng/mL)group,TGF-β_2(10 ng/mL) plus curcumin(5,25,50 μmol/L) groups.mRNA expressions of PPAR-7,platelet-derived growth factor receptor B(PDGFR-B),fibroblast growth factor R1(FGFR1) were detected using reverse transcription PCR.Protein levels of PPAR-7 and collagen-1 were detected using Western blot and ELISA in the blank control group,the TGF-β_2 group,the TGF-β_2(10 ng/mL) plus curcumin50 μmol/L group.Results Compared with the blank control group,curcumin 50 μmol/L showed the most significant inhibition on cell proliferation at 48 h and 72 h.Compared with the TGF-β_2 group,TGF-β_2(10 ng/mL) plus curcumin 50 μmol/L also showed the most significant inhibition on cell proliferation at 48 h and 72 h.Compared with the blank control group,mRNA expressions of PPAR-7 and PDGF-B,as well as protein expression of PPAR-7 increased,the collagen-1 expression also increased in the TGF-β_2 group(P〈0.05).Compared with the TGF-β_2 group,mRNA expressions of PPAR-7 obviously increased in the TGF-β_2(10 ng/mL) plus curcumin 25 μmol/L group and the TGF-B_2(10 ng/mL) plus curcumin 50 μmol/L group,higher than that in the TGF-B_2(10 ng/mL) plus curcumin 5 μmol/L group(P〈0.05).mRNA expressions of PPAR-7 was higher in the TGF-B_2(10 ng/mL) plus curcumin 50 μmol/L group than in the TGF-β_2(10 ng/mL) plus curcumin 25 μmol/L group(P〈0.05).mRNA expressions of PDGF-B was lower in TGF-β_2(10 ng/mL) plus curcumin groups than in the TGF-β_2 group(P〈0.05).Besides,PDGF-3

关 键 词:姜黄素 过氧化物酶体增殖物激活受体Γ 转化生长因子-β_2 血小板衍生生长因子-β 肺纤维化 

分 类 号:R285.5[医药卫生—中药学]

 

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