实用肝脏病杂志 ›› 2020, Vol. 23 ›› Issue (2): 171-174.doi: 10.3969/j.issn.1672-5069.2020.02.006

• 实验性肝炎 • 上一篇    下一篇

慢病毒介导miR-203过表达对酒精性肝病大鼠肝损伤的保护作用及其机制研究*

黄橘村, 胡东辉, 张建军, 田德英   

  1. 430030 武汉市 湖北省第三人民医院肝病科(黄橘村,胡东辉,张建军);华中科技大学同济医学院附属同济医院消化内科(田德英)
  • 收稿日期:2019-03-25 出版日期:2020-03-10 发布日期:2020-04-20
  • 通讯作者: 张建军,E-mail:103369101@qq.com
  • 作者简介:黄橘村,男,36岁,大学本科,主治医师。研究方向:中西医结合治疗肝病研究
  • 基金资助:
    湖北省自然科学基金面上项目(编号:2016CFB638)

Protection of liver injuries by lentivirus-transfected miR-203 overexpression in rats with alcohol-induced liver disease

Huang Jucun, Hu Donghui, Zhang Jianjun, et al   

  1. Department of Hepatology, Third Provincial People’s Hospital, Wuhan 430030,Hubei Province,China
  • Received:2019-03-25 Online:2020-03-10 Published:2020-04-20

摘要: 目的 探讨miR-203对酒精性肝病(ALD)大鼠肝损伤的保护作用及其作用机制。方法 将60只SD大鼠随机分为ALD组(A组)、NC-miRNA/ALD组(B组)和miR-203/ALD组(C组)。将慢病毒质粒经尾静脉注射感染大鼠,并采用酒精饮料喂养法建立ALD模型,采用Realtime PCR法检测大鼠肝组织miR-203水平,常规行病理学检查,评估大鼠肝组织损伤情况。使用市售试剂盒检测大鼠肝组织匀浆超氧化物歧化酶(SOD)、过氧化氢酶(CAT)和丙二醛(MDA)水平,采用Western Blot法检测肝组织IL-1β和NF-κB蛋白表达。结果 在建模8 w末,C组大鼠肝组织miR-203水平为(2.8±0.1),显著高于B组【(1.3±0.5),P<0.05】;C组动物血清AST、ALT和TBIL水平分别为(89.5±7.9)U/L、(38.5±10.1)U/L和(27.8±5.1)μmol/L,显著低于B组【(162.8±16.5)U/L、(69.6±7.5)U/L和(54.9±7.8)μmol/L,P<0.05】;C组肝组织匀浆SOD和CAT水平分别为(57.6±11.4)U/mg和(54.6±9.9)U/mg,显著高于B组【(41.6±7.6)U/mg和(45.7±6.0)U/mg,P<0.05】,而MDA水平为(2.8±0.1)nmol/g,显著低于B组【(5.0±0.2)nmol/g,P<0.05】;Western Blot检测结果表明,C组肝组织IL-1β蛋白和NF-κB表达分别为(0.7±0.2)和(0.3±0.1),显著低于B组【(1.2±0.3)和(1.0±0.2),P<0.05】。结论 miR-203过表达对ALD大鼠肝损伤起到了保护作用,其可能的机制是增强了抗氧化和抗炎作用。

关键词: 酒精性肝病, miR-203, 氧化应激, 大鼠

Abstract: Objective To explore the protective effect of liver injuries by lentivirus-transfected miR-203 overexpression in rats with alcohol-induced liver disease (ALD). Methods 60 male SD rats were randomly divided into ALD (group A), NC-miRNA plus ALD (group B) and miR-203 plus ALD (group C). Lenti-NC or Lenti-miR-203 were administered to rats by tail vein injection using a 30 gauge ultra-fine insulin syringe before ALD model establishment. Real-time PCR was used to detect miR-203 levelss in liver tissues, and HE staining was used to evaluate the injury of liver tissues. The changes of superoxide dismutase (SOD), catalase (CAT) and malonaldehyde (MDA) in liver tissue homogenates in each group were detected by ELISA and hepatic IL-1β and NF-κB protein expression were detected by Western Blot. Results At the end of eight week model establishment, the miR-203 level in group C rat liver tissue was (2.8±0.1), significantly higher than 【(1.3±0.5), P<0.05】 in group B; serum AST, ALT and bilirubin levels in group C were (89.5±7.9)U/L, (38.5±10.1)U/L and (27.8±5.1)μmol/L, significantly lower than 【(162.8±16.5)U/L, (69.6±7.5)U/L and (54.9±7.8)μmol/L, P<0.05】, respectively,in group B; hepatic homogenate SOD and CAT in group C were (57.6±11.4)U/mg and(54.6±9.9)U/mg, significantly higher than [(41.6±7.6)U/mg and (45.7±6.0)U/mg, P<0.05】, respectively, in group B, while hepatic homogenate MDA level was (2.8±0.1)nmol/g, much lower than 【(5.0±0.2)nmol/g, P<0.05】 in group B; the results by Western bloting showed thant hepatic IL-1β and NF-κB expression in group C were (0.7±0.2) and (0.3±0.1), significantly lower than 【(1.2±0.3) and (1.0±0.2), respectively, P<0.05】 in group B. Conclusion Our findings suggest that the overexpression of miR-203 has a protective effect on liver injury in ALD rats, which might be attributed to the intensified antioxidant and anti-inflammatory effects.

Key words: Alcohol liver diseases, miR-203, Oxidant stress, Rats