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1. 重庆医科大学附属第一医院中西医结合科
2. 重庆市长寿区人民医院中西医结合科
纸质出版日期:2017,
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冯藜枥, 曹文富, 叶凤. 莪术含药血清抑制大鼠HSC中Gli1和β-catenin表达的机制研究[J]. 重庆医科大学学报, 2017,42(3):308-314.
Feng Lili, Cao Wenfu, Ye Feng. Mechanism of Ezhu-containing serum inhibiting the expression of Gli1 and β-catenin in hepatic stellate cells[J]. Journal of Chongqing Medical University, 2017,42(3):308-314.
冯藜枥, 曹文富, 叶凤. 莪术含药血清抑制大鼠HSC中Gli1和β-catenin表达的机制研究[J]. 重庆医科大学学报, 2017,42(3):308-314. DOI: 10.13406/j.cnki.cyxb.001221.
Feng Lili, Cao Wenfu, Ye Feng. Mechanism of Ezhu-containing serum inhibiting the expression of Gli1 and β-catenin in hepatic stellate cells[J]. Journal of Chongqing Medical University, 2017,42(3):308-314. DOI: 10.13406/j.cnki.cyxb.001221.
目的:研究莪术含药血清调节瘦素活化的大鼠肝星状细胞(hepatic stellate cells
HSC)中刺猬(hedgehog
Hh)信号通路锌指转录因子-1(glioma-associated oncogene homolog-1
Gli1)和Wnt信号通路关键因子β-连环蛋白(β-catenin)表达的机制。方法:按随机数字表法将30只清洁级sprague-dawley(SD)大鼠均分3组
分别给予莪术水煎剂、秋水仙碱、生理盐水灌胃取血制备含药血清。经高效液相色谱法(HPLC)检测血清中莪术成分。体外培养大鼠HSC
分为8组:空白组、模型组、Hh通路抑制剂组、莪术组、Hh通路抑制剂+莪术组、Hh通路激动剂组、Hh通路激动剂+莪术组、秋水仙碱组。除空白组外
其余各组均给予100 ng/m L瘦素诱导后
各组再给予相应药物干预24 h
MTT法检测HSC增殖情况
RT-PCR法检测Gli1 m RNA和β-catenin m RNA表达
Western blot及免疫荧光法检测Gli1和β-catenin蛋白表达。结果:与空白组比较
经瘦素活化的大鼠HSC中Gli1、β-catenin的m RNA和蛋白表达均明显增高(均P=0.000)。与模型组比较
Hh通路抑制剂、莪术含药血清分别干预及莪术含药血清与Hh通路抑制剂协同干预后
Gli1、β-catenin的m RNA和蛋白表达均明显降低(均P=0.000);秋水仙碱含药血清干预后
Gli1 m RNA和蛋白明显降低(P=0.000
P=0.007)
β-catenin m RNA和蛋白表达均明显降低(均P=0.000);Hh通路激动剂干预后
Gli1、β-catenin的m RNA和蛋白表达均明显增高(均P=0.000)。与Hh通路激动剂组比较
用莪术含药血清干预Hh通路激动剂组后
Gli1、β-catenin的m RNA和蛋白表达均明显降低(均P=0.000)。结论:莪术含药血清可通过下调瘦素诱导活化的大鼠HSC中Gli1的表达
参与Hh信号通路抑制HSC的活化与增殖
并能通过下调Gli1的表达而下调Wnt信号通路关键因子β-catenin的表达
抑制HSC活化与增殖
从而抑制肝纤维化。
Objective:To explore the mechanism of Ezhu-containing serum inhibiting the expression of glioma-associated oncogene homolog-1(Gli1
the nuclear transcription factor of hedgehog signaling pathway)and β-catenin(the core factor of wnt signaling pathway)in hepatic stellate cells(HSC)stimulated by leptin. Methods:Thirty sprague-dawley(SD) rats were random Ly divided into 3groups(n=10)
which were treated with Ezhu-decoction
colchicine and physiological saline by gavage for 10 d in order to prepare drug-containing serums. The method of high performance liquid chromatography(HPLC)was used to detect the composition of Ezhu in serum. The HSC during the exponential growth phase were divided into 8 groups:blank control group
model group
hedgehog pathway inhibitors(cyclopamine) group
ezhu group
Ezhu and cyclopamine group
hedgehog pathway agonost(pumorphamine)group
Ezhu and purmorphamine group
colchicine group. HSC were cultured in vitro and stimulated with 100 ng/m L leptin(except for the blank control group)
then were treated separately with the corresponding drug for 24 h. After cells being collected
HSC proliferation was detected using MTT colorimetric assay;the expressions of Gli1 and β-catenin were determined by PT-PCR
Western blot and immunofluorescence
respectively. Results:Compared with those of blank control group
the expressions of Gli1 m RNA and Gli1 proteins and β-catenin m RNA and β-catenin proteins were obviously increased after stimulating the HSC of rats by leptin(All P=0.000). Compared with those of model group
the expressions of Gli1 m RNA and Gli1 proteins and β-catenin m RNA and β-catenin proteins were decreased obviously(All P=0.000)after being interfered by Hh pathway(cyclopamine)and ezhu-containing serum. Compared with the model group
using ezhu-containing serum to interfere the Hh pathway inhibitors group can make the expression of Gli1 m RNA and Gli1 proteins and β-catenin m RNA and β-catenin proteins decreased obviously(All P=0.000). Compared with those of the model group
after being interfered by colchicines
the expressions of Gli1 m RNA and Gli1 proteins were decreased obviously(P=0.000
P=0.007)
and β-catenin m RNA andβ-catenin proteins were decreased obviously(All P=0.000). Compared with those of model group
the expressions of Gli1 m RNA and Gli1 proteins and β-catenin m RNA and β-catenin proteins were increased obviously(All P=0.000)after adding Hh pathway agonist(purmorphamine). Compared with those of purmorphamine group
the expressions of Gli1 m RNA and Gli1 proteins and β-catenin m RNA and β-catenin proteins decreased obviously(All P=0.000)after using ezhu-containing serum to interfere the purmorphamine group. Conclusion:Ezhu-containing serum plays an important part in inhibition of HSC activation and increment by taking part in hedgehog signaling pathway to regulate the expression of Gli1. Ezhu-containing serum could inhibit the expression of β-catenin(the key factor of Wnt signaling pathway)by regulating the expression of Gli1 in leptin-induced HSC
thus inhibiting liver fibrosis.
莪术含药血清肝星状细胞刺猬信号通路锌指转录因子-1Wnt信号通路β-连环蛋白
ezhu-containing serumhepatic stellate cellhedgehog signaling pathwayglioma-associated oncogene homolog-1Wnt signaling pathwayβ-catenin
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