实用医学杂志 ›› 2022, Vol. 38 ›› Issue (13): 1630-1636.doi: 10.3969/j.issn.1006⁃5725.2022.13.012

• 基础研究 • 上一篇    下一篇

青蒿琥酯对人脐带间充质干细胞诱导的去分化肌成纤维细胞凋亡的影响

王雅文1,2 吴苗2 耿素霞2 曾令基2 王玉连2 赖沛龙2 杜欣2 翁建宇1,2   

  1. 1 华南理工大学医学院(广州 510006);2 广东省人民医院(广东省医学科学院)(广州 510080)

  • 出版日期:2022-07-10 发布日期:2022-07-10
  • 通讯作者: 翁建宇 E⁃mail:wengjianyu1969@163.com
  • 基金资助:
    广东省自然科学基金项目(编号:2019A1515012049);国家自然科学基金面上项目(编号:82070176)

Artesunate induces apoptosis of human umbilical cord mesenchymal stem cells ⁃ induced dedifferentiated myofibroblasts(MSC ⁃ deMFB)

WANG Yawen*,WU Miao,GENG Suxia,ZENG Lingji,WANG Yulian,LAI Peilong,DU Xin,WENG Jianyu.   

  1. School of Medicine,South China University of Technology,Guangzhou 510006 China

  • Online:2022-07-10 Published:2022-07-10
  • Contact: WENG Jianyu E⁃mail:wengjianyu1969@163.com

摘要:

目的 了解人脐带间充质干细胞(hUCMSC)对肺肌成纤维细胞(MFB)的作用,探索青蒿琥 酯联合 hUCMSC 对肺 MFB 的作用。方法 胶原酶消化贴壁法获得 hUCMSC;人胚肺成纤维细胞(MRC⁃5 TGF⁃β1(10 ng/mL)诱导 48 h 后,加入 MFB 和(或)青蒿琥酯共培养 24 h;撤除 MSC 后,在 MSC⁃deMFB 体系中重新加 TGF⁃β1 再刺激。流式检测细胞凋亡、CCK8 检测细胞增殖及 qPCR WB 分别检测纤维化 相关蛋白的 mRNA 和蛋白表达水平。结果 hUCMSC 符合 ISCT MSC 标准。经 TGF⁃β1 刺激后的 MRC⁃5 (即 MFB)与 hUCMSC 共培养 24 h 后,细胞(MSC⁃deMFB)呈增殖状态,CCK8 检测发现 OD 值较对照组增加 P < 0.01);α⁃SMA、COL1A1 FN1 的表达明显降低,接近 FB(MRC⁃5)初始水平(P < 0.01)。当撤除 MSC 后,在 MSC⁃deMFB 体系中重新加入 TGF⁃β1 时,细胞恢复 MFB 特征(α⁃SMA、COL1A1 FN1 的表达升高), 提示 MSC 诱导 MFB 去分化是可逆的。当青蒿琥酯和 MSC 同时作用 MFB 时,细胞总凋亡率较对照组增加; 并进一步抑制 α⁃SMA、COL1A1 的表达(P < 0.01)。结论 间充质干细胞分泌物诱导肺肌成纤维细胞增 殖、可逆性去分化及抑制细胞外基质合成;青蒿琥酯诱导 MSC⁃deMFB 凋亡,与 MSC 协同抑制 MSC⁃deMFB 细胞 α⁃SMA 及纤维化相关细胞外基质基因表达。青蒿琥酯协同人脐带间充质干细胞可能是抗纤维化的 新策略。

关键词: 人脐带间充质干细胞,  , 青蒿琥酯,  , 肺肌成纤维细胞,  , 去分化,  , 凋亡

Abstract:

Objective To understand the effect of human umbilical cord mesenchymal stem cells(hUC⁃ MSCs on myofibroblasts and to explore the effect of artesunate combined with hUCMSCs on myofibroblasts. Methods hUC⁃MSCs were isolated from umbilical cord by type Ⅱ collagenase digestion and adherence method. Human embryonic lung fibroblasts(MRC⁃5)were induced by TGF⁃β1 for 48 h,then added to MSCs and or ART for 24 h. Besides,after removal of the MSCs,TGF⁃β1 was readded into the MSC⁃deMFB system. The apoptosis level and the proliferation of cells were detected by flow cytometry and CCK8,respectively. The mRNA and protein expression levels of α ⁃ SMA,collagen and fibronectin were detected by qPCR and WB,respectively. Results hUCMSCs used in the experiment met the ISCT MSC criteria. After TGF⁃β1 pretreatment of MRC⁃5(MFB),cells were co ⁃cultured with MSCs for 24 h and the CCK8 increased compared with the control group(P < 0.01). The mRNA and protein expression of α⁃SMA,COL1A1 and Fibronectin were significantly lower and close to the initial level of fibroblasts. When TGF ⁃ β1 was re ⁃added to the MSC ⁃ deMFB system,the cells recovered myofibroblasts characteristics,suggesting that MSC⁃induced myofibroblasts dedifferentiation was reversible. When myofibroblasts were stimulated by artesunate and MSCs simultaneously ,the cell apoptosis rate increased compared with the control group and it further inhibited the mRNA and protein expressions of α ⁃ SMA and COL1A1(P < 0.01). Conclusions hUCMSCs can induce proliferation,dedifferentiation and inhibit extracellular matrix synthesis oflung myofibroblasts. Artesunate can induce the apoptosis of MSC⁃deMFB and overcome the effects of MSC⁃induced proliferation of myofibroblasts. Artesunate in conjunction with hUCMSCs may be a novel anti⁃fibrosis strategy.

Key words:

human umbilical cord mesenchymal stem cells, artesunate, pulmonary myofibroblasts, dedifferentiation, apoptosis