中国组织工程研究 ›› 2020, Vol. 24 ›› Issue (31): 5038-5043.doi: 10.3969/j.issn.2095-4344.2112

• 干细胞基础实验 basic experiments of stem cells • 上一篇    下一篇

肺痹方干预肺纤维化模型小鼠细胞外基质转化的机制

程  雪1,方  泓2,张运克1,吴银根2   

  1. 1河南中医药大学,河南省郑州市  450046;2上海中医药大学附属龙华医院,上海市  200032
  • 收稿日期:2019-11-05 修回日期:2019-11-13 接受日期:2019-12-26 出版日期:2020-11-08 发布日期:2020-09-04
  • 通讯作者: 方泓,博士,主任医师,硕士生导师,上海中医药大学附属龙华医院,上海市 200032
  • 作者简介:程雪,女,1988年生,河南省信阳市人,2018年上海中医药大学毕业,博士,讲师,主要从事呼吸系统疾病的临床研究。
  • 基金资助:
    河南省高等学校重点科研项目(20B360015);第二期名师传承工程吴银根名师研究室(教学009)

Interventional mechanism of Feibi prescription on extracellular matrix transformation in a mouse model of pulmonary fibrosis

Cheng Xue1, Fang Hong2, Zhang Yunke1, Wu Yingen2   

  1. 1Henan University of Chinese Medicine, Zhengzhou 450046, Henan Province, China; 2Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, China
  • Received:2019-11-05 Revised:2019-11-13 Accepted:2019-12-26 Online:2020-11-08 Published:2020-09-04
  • Contact: Fang Hong, MD, Chief physician, Master’s supervisor, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, China
  • About author:Cheng Xue, MD, Lecturer, Henan University of Chinese Medicine, Zhengzhou 450046, Henan Province, China
  • Supported by:
    the Key Scientific Research Project of Higher Education Institutions in Henan Province, No. 20B360015; the Second-Phase Famous Teacher’s Inheritance Project, No. Teaching 009

摘要:

文题释义:

细胞外基质:肺组织的细胞外基质与肺纤维化关系最为密切,肺组织损伤修复过程中细胞外基质成分首先填补损伤肺组织,当其过度沉积时可形成肺间质纤维化此外细胞外基质与炎症也有密切关系,因此研究细胞外基质形成对于认识肺纤维化的发病机制及诊断、防治具有重要意义。

博来霉素:是一类糖苷类抗生素,临床上用于多种肿瘤的治疗,具有可致机体发生明显肺间质纤维化的毒副作用,故多用于肺纤维化动物模型的制备,其作用机制是诱导肌成纤维细胞的异常增生,过量胶原纤维堆积,最终导致肺纤维化的形成。

背景:肺组织损伤修复过程中,细胞外基质成分首先填补损伤肺组织,当其过度沉积时可形成肺间质纤维化。

目的:探讨肺痹方对博莱霉素致肺纤维化小鼠细胞外基质转化的干预作用。

方法:60C57BL/6雄性小鼠随机分为空白对照组、模型组、吡非尼酮组、肺痹方低剂量组、肺痹方中剂量组、肺痹方高剂量组,每组10只。除空白对照组外,其余5组腹腔注射博莱霉素[7.5 mg/(kg·d)]建立肺纤维化模型,连续注射10 d。造模后第1天各药物组灌胃给药[51.43 mg/(kg·d)]吡非尼酮,6.4312.86   25.72 mg/(kg·d)肺痹方],连续给药28 d。用药28 d后取肺组织,采用苏木精-伊红染色和Masson染色观察小鼠肺组织的形态学变化,ELISA法检测血清中转化生长因子β1、肿瘤坏死因子α水平,Western blot法检测肺组织中α-平滑肌肌动蛋白、型胶原、型胶原的表达。

结果与结论:与空白对照组相比,各组小鼠血清转化生长因子β1水平显著升高(P < 0.01);与模型组相比,吡非尼酮组、肺痹方中剂量组、肺痹方高剂量组血清转化生长因子β1水平显著降低(P < 0.05P < 0.01),肺痹方高剂量组降低最明显;与模型组相比,用药各组血清肿瘤坏死因子α水平明显降低(P < 0.01),用药各组之间两两比较差异无显著性意义(P > 0.05)与空白对照组相比,各组α-平滑肌肌动蛋白表达均不同程度增高(P < 0.05P < 0.01);肺痹方高剂量组α-平滑肌肌动蛋白表达低于肺痹方低、中剂量组,差异有显著性意义(P < 0.05)与空白对照组相比,模型组、肺痹方低剂量组型胶原表达增高(P < 0.05P < 0.01);与模型组相比,肺痹方中、高剂量组型胶原表达降低(P < 0.05)与空白对照组相比,各组型胶原表达均不同程度增高(P < 0.05P < 0.01);肺痹方中、高剂量组以及吡非尼酮组型胶原表达明显低于肺痹方低剂量组(P < 0.05P < 0.01)结果表明,肺痹方可以减轻肺纤维化,抑制博来霉素诱导的肺纤维化小鼠细胞外基质转化,其机制可能与下调血清中转化生长因子β1、肿瘤坏死因子α水平,抑制肺组织中α-平滑肌肌动蛋白、型胶原、型胶原表达有关。

ORCID: 0000-0002-9170-7217(程雪)

中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

关键词: 肺痹方, 肺纤维化,  细胞外基质,  博莱霉素,  C57BL/6小鼠

Abstract:

BACKGROUND: In the process of repair, extracellular matrix components first fill up the damaged lung tissue. However, excessive deposition of extracellular matrixes can develop pulmonary interstitial fibrosis.

OBJECTIVE: To investigate the effect of Feibi prescription on extracellular matrix transformation in mice with pulmonary fibrosis induced by bleomycin.

METHODS: Sixty male C57BL/6 mice were randomly divided into blank control group, model group, pirfenidone group, and three Feibi prescription groups (low-, middle-, and high-dose groups). There were 10 mice in each group. Except for the blank control group, the other five groups were intraperitoneally injected with bleomycin (7.5 mg/kg per day) for 10 continuous days to establish the model of pulmonary fibrosis. On day 1 after modeling, the mice in corresponding drug groups were intragastrically administered with pirfenidone (51.43 mg/kg per day) and Feibi prescription (6.43, 12.86, 25.72 mg/kg per day). Drug administration lasted for 28 days. Then, morphological changes of lung tissue in mice were observed by hematoxylin-eosin staining and Masson staining. The contents of transforming growth factor-β1 and tumor necrosis factor-α in the serum were detected by ELISA, and the expression of a-smooth muscle actin, collagen type I and collagen type III in the lung tissue was detected by western blot assay.

RESULTS AND CONCLUSION: The serum levels of transforming growth factor-β1 were significantly increased in the other groups compared with the blank control group (P < 0.01), but the levels were significantly lower in the pirfenidone, middle-dose and high-dose Feibi prescription groups than in the model group (P < 0.05, P < 0.01), and the most decline was in the high-dose Feibi prescription group. Compared with the model group, the expression of tumor necrosis factor-α was significantly reduced in the four drug groups (P < 0.01), but there was no significant difference between the drug groups (P > 0.05). Compared with the blank control group, the expression of α-smooth muscle actin was increased in the other groups to varying degrees (P < 0.05, P < 0.01). The expression of α-smooth muscle actin was significantly lower in the high-dose Feibi prescription group than the low- and middle-dose Feibi prescription groups (P < 0.05). The expression of collagen type I was significantly higher in the model and low-dose Feibi prescription groups than in the control group, whereas it was significantly lower in the middle- and high-dose Feibi prescription groups than in the model group (P < 0.05). Compared with the blank control group, the expression of collagen type III was increased to different extents in the other groups (P < 0.05, P < 0.01). Compared with the low-dose Feibi prescription group, the expression of collagen type III was significantly decreased in the middle-dose Feibi prescription group, high-dose Feibi prescription group and bleomycin group (P < 0.05, P < 0.01). To conclude, Feibi prescription can alleviate pulmonary fibrosis and inhibit the extracellular matrix transformation in bleomycin-induced pulmonary fibrosis mice. The mechanism may be related to down-regulating the levels of transforming growth factor-β1 and tumor necrosis factor-α, and inhibiting the expression of α-smooth muscle actin, collagen type I and collagen type III in the lung tissue.

Key words: Feibi prescription,  pulmonary fibrosis,  extracellular matrix,  bleomycin,  C57BL/6 mice

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