中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (21): 3322-3327.doi: 10.3969/j.issn.2095-4344.0880

• 干细胞培养与分化 stem cell culture and differentiation • 上一篇    下一篇

不同氧体积分数下脂肪间充质干细胞和脐带间充质干细胞的旁分泌能力

杨记农1,姜亦瑶2,3,袁 超1,3,刘志刚1,刘晓程1   

  1. 1中国医学科学院北京协和医学院,泰达国际心血管病医院心外科,天津市 300457;2蚌埠医学院第一附属医院心脏外科,安徽省蚌埠市 233000;3南开大学,天津市 300071
  • 修回日期:2018-05-04 出版日期:2018-07-28 发布日期:2018-07-28
  • 通讯作者: 刘晓程,中国医学科学院北京协和医学院,泰达国际心血管病医院心外科,天津市 300457
  • 作者简介:杨记农,中国医学科学院北京协和医学院,泰达国际心血管病医院心外科,天津市 300457
  • 基金资助:

    天津市滨海新区卫生局基金项目(2014BHKY010);天津市企业博士后创新项目择优资助计划(2015-001);安徽省高校优秀青年人才支持计划重点项目(GXYQZD2016167)

Paracrine abilities of adipose-derived mesenchymal stem cells and umbilical cord mesenchymal stem cells under different oxygen concentrations

Yang Ji-nong1, Jiang Yi-yao2, 3, Yuan Chao1, 3, Liu Zhi-gang1, Liu Xiao-cheng1   

  1. 1Department of Cardiac Surgery, TEDA International Cardiovascular Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300457, China; 2Department of Cardiac Surgery, First Affiliated Hospital of Bengbu Medical College, Bengbu 233000, Anhui Province, China; 3Nankai University, Tianjin 300071, China
  • Revised:2018-05-04 Online:2018-07-28 Published:2018-07-28
  • Contact: Liu Xiao-cheng, Department of Cardiac Surgery, TEDA International Cardiovascular Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300457, China
  • About author:Yang Ji-nong, Department of Cardiac Surgery, TEDA International Cardiovascular Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300457, China
  • Supported by:

    the Health Bureau Fund Project of Binhai New Area, Tianjin, No. 2014BHKY010; Tianjin Enterprise Postdoctoral Innovation Funding Program, No. 2015-001; Anhui Provincial Young Talent Support Project for Universities, No. GXYQZD2016167

摘要:

文章快速阅读:

文题释义:
旁分泌效应:
细胞分泌某种细胞因子对邻近靶细胞(可以同种细胞也可以是异种细胞,主要与内分泌长程效应相对)表现出的生物学作用。需要指出自分泌效应是细胞产生因子再作用于自身细胞产生的生物学作用。
血管内皮生长因子:是一种高度特异性的促血管内皮细胞生长因子,具有促进血管通透性增加、细胞外基质变性、血管内皮细胞迁移、增殖和血管形成等作用。

 

摘要
背景:
间充质干细胞治疗急性心肌梗死的机制与间充质干细胞的迁移、定植和分化相关,更重要的是间充质干细胞的旁分泌作用。
目的:评估低氧体积分数下脂肪间充质干细胞和脐带间充质干细胞的旁分泌及促血管再生能力,为选择合适的间充质干细胞应用于治疗急性心肌梗死提供依据。  
方法:分离并培养人脂肪间充质干细胞和人脐带间充质干细胞,流式细胞术鉴定细胞的免疫表型;2种细胞按氧体积分数不同各分为体积分数3% O2预处理组、体积分数5% O2预处理组和体积分数21% O2对照组,培养24 h;酶联免疫吸附法检测各组细胞上清液肝细胞生长因子、血管内皮生长因子、神经生长因子、角质细胞生长因子水平。
结果与结论:①2种间充质干细胞阳性表达CD73、CD90、CD105,阴性表达CD34、CD45、CD54、HLA-DR;②各氧体积分数条件下,人脂肪间充质干细胞分泌血管内皮生长因子水平均显著高于人脐带间充质干细胞 (P < 0.01);③在体积分数5% O2条件下,人脂肪间充质干细胞分泌肝细胞生长因子水平显著高人脐带间充质干细胞(P < 0.05);④在体积分数3% O2和体积分数5% O2条件下,人脐带间充质干细胞分泌神经生长因子水平显著高于人脂肪间充质干细胞(P < 0.01);⑤在体积分数3% O2和体积分数5% O2条件下,人脐带间充质干细胞分泌角质细胞生长因子水平显著高于人脂肪间充质干细胞(P < 0.01或P < 0.05),在体积分数21% O2条件下,人脂肪间充质干细胞分泌角质细胞生长因子水平显著高于人脐带间充质干细胞(P < 0.01);⑥结果表明,低氧能够提高2种干细胞旁分泌效应。人脂肪间充质干细胞在血管内皮生长因子旁分泌能力上明显优于人脐带间充质干细胞,故认为人脂肪间充质干细胞可能更适合用于心肌梗死的干细胞治疗。

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
ORCID: 0000-0002-4649-1947(杨记农)

关键词: 急性心肌梗死, 脂肪间充质干细胞, 脐带间充质干细胞, 低氧, 旁分泌, 干细胞

Abstract:

BACKGROUND: Therapeutic mechanisms of mesenchymal stem cells for acute myocardial infarction are related to the migration, colonization, and differentiation of mesenchymal stem cells, and more importantly, it is related to the paracrine effects of mesenchymal stem cells.
OBJECTIVE: To evaluate the paracrine and vascular regeneration abilities of human adipose-derived mesenchymal stem cells (hAD-MSCs) and human umbilical cord mesenchymal stem cells (hUC-MSCs) under low oxygen concentrations, thereby providing the basis for the selection of appropriate mesenchymal stem cells used in the treatment of acute myocardial infarction.
METHODS: hUC-MSCs and hAD-MSCs were isolated and cultured, and cell immunophenotype was identified using flow cytometry. Two kinds of cells were pretreated with 3%, 5% and 21% (control) O2 for 24 hours. Enzyme linked immunosorbent assay was used to detect the contents of hepatocyte growth factor (HGF), vascular endothelial growth factor (VEGF), nerve growth factor (NGF) and keratinocyte growth factor (KGF) in the cell supernatant in each group.
RESULTS AND CONCLUSION: hUC-MSCs and hAD-MSCs were positive for CD73, CD90 and CD105, and negative for CD34, CD45, CD54 and HLA-DR. Under different oxygen concentrations, the VEGF level in the hAD-MSCs was significantly higher than that in the hUC-MSCs  (P < 0.01). Under 3% O2 conditions, the HGF level in the hAD-MSCs was significantly higher than that in the hUC-MSCs (P < 0.05). Under 3% and 5% O2, the NGF level in the hUC-MSCs was significantly higher than that in the hAD-MSCs (P < 0.01). Under 3% and 5% O2, the KGF level in the hUC-MSCs was significantly higher than that in the hAD-MSCs (P < 0.01 or P < 0.05). Under 21% O2, the KGF level in the hAD-MSCs was significantly higher than that in the hUC-MSCs (P < 0.01). To conclude, hypoxia can promote the paracrine effects of and hAD-MSCs. Moreover, hUC-MSCs show better paracrine ability than hAD-MSCs. Therefore, hAD-MSCs are more likely to be a stem cell therapy suitable for myocardial infarction.

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

Key words: Myocardial Infarction, Adipose Tissue, Umbilical Cord, Mesenchymal Stem Cells, Cell Hypoxia, Vascular Endothelial Growth Factors, Hepatocyte Growth Factor, Nerve Growth Factor, Tissue Engineering

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