Anti⁃miR34c 树状纳米颗粒对裸鼠肝纤维化的治疗作用
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(浙江省医学科学院浙江省实验动物中心,浙江省实验动物与安全性研究重点实验室, 杭州 310013)

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Q95-33


Delivery of anti⁃miR34c by polyamidoamine dendrimer attenuates hepatic fibrosis in nude mice
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(Zhejiang Academy of Medical Sciences Center of Laboratory Animals, Key Laboratory of Experimental Animal and Safety Research of Zhejiang Province, Zhejiang Hangzhou 310013, China)

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    摘要:

    目的 探索anti?miR34c 树状纳米颗粒对裸鼠肝纤维化的治疗效果?方法 将清洁级(20 ± 2)g 裸鼠随机分为正常组?模型组?anti?miR34c 树状纳米颗粒治疗组,每组5 只,腹腔注射四氯化碳诱导肝纤维化模型?HE 染色观察肝组织病理变化,Masson 染色评价胶原沉积情况,ELISA 检测血清生化指标,免疫组化检测TGF?β 和α?SAM 在肝组织中的表达变化?结果 anti?miR34c 树状纳米颗粒治疗组的肝组织炎症细胞浸润减少,胶原沉积降低,肝纤维化指标TGFβ 和α?SAM 表达降低,血清生化指标好转?结论 anti?miR34c 的树状纳米颗粒能够有效改善裸鼠肝纤维化肝损伤,有望成为治疗肝纤维化的新策略?

    Abstract:

    Objective Upregulation of miR34 in the liver has been found in numerous liver diseases, from fatty liver disease to hepatocellular carcinoma. In the present study, we examined the protective actions of anti?miR34c polyamidoamine (PAMAM) dendrimer nanoparticles on hepatic fibrosis in nude mice. Methods Fifteen clean nude mice were randomly divided into the normal control, model control, and anti?miR34c PAMAM dendrimer nanoparticles groups (n =5 per group). Hepatic fibrosis was induced by intraperitoneal injection of 100 μL of 20% carbon tetrachloride twice weekly for 6weeks. Hepatic pathology, serum biochemical indicators, and transforming growth factor?β(TGF?β) / α?smooth muscle cell actin (α?SMA) immunohistochemistry were examined. Results Anti?miR34c delivered by the PAMAM dendrimer decreased inflammatory cell infiltration, collagen deposition, and TGF?β and α?SAM expression in the liver, and improved serum biochemical factors. Conclusions Anti?miR34c PAMAM dendrimer nanoparticles can improve hepatic fibrosis by reducing activation of HSC and incidence of liver injury in nude mice.

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张欢欢,方杰,俞文英,杨扬,余陈欢,应华忠. Anti⁃miR34c 树状纳米颗粒对裸鼠肝纤维化的治疗作用[J].中国实验动物学报,2018,26(5):587~591.

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  • 收稿日期:2018-05-04
  • 在线发布日期: 2018-11-09
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