中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (51): 7684-7689.doi: 10.3969/j.issn.2095-4344.2016.51.013

• 组织构建细胞学实验 cytology experiments in tissue construction • 上一篇    下一篇

猪心脏瓣膜成肌纤维细胞的分离、鉴定与培养

刘凤丹,胡伟林,陈正平,李永胜   

  1. 华中科技大学同济医学院附属同济医院急诊科,湖北省武汉市  430000
  • 收稿日期:2016-09-17 出版日期:2016-12-09 发布日期:2016-12-09
  • 通讯作者: 李永胜,博士后,副教授,华中科技大学同济医学院附属同济医院急诊科,湖北省武汉市 430000
  • 作者简介:刘凤丹,女,1989年生,河南省夏邑县人,汉族,硕士,主要从事wnt信号通路对急性肺损伤的调控作用研究。
  • 基金资助:

    国家自然科学基金(81070190)

Isolation, identification and culture of porcine heart valve myofibroblasts

Liu Feng-dan, Hu Wei-lin, Chen Zheng-ping, Li Yong-sheng   

  1. Department of Emergency, Tongji Hospital of Tongji Medical College of Huazhong University of Science and Technology, Wuhan 430000, Hubei Province, China
  • Received:2016-09-17 Online:2016-12-09 Published:2016-12-09
  • Contact: Li Yong-sheng, M.D., Associate professor, Department of Emergency, Tongji Hospital of Tongji Medical College of Huazhong University of Science and Technology, Wuhan 430000, Hubei Province, China
  • About author:Liu Feng-dan, Master, Department of Emergency, Tongji Hospital of Tongji Medical College of Huazhong University of Science and Technology, Wuhan 430000, Hubei Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81070190

摘要:

文章快速阅读:

文题释义:
肌成纤维细胞:瓣膜间质细胞位于瓣膜内皮下,是心脏瓣膜最多的细胞类型,和瓣膜内皮细胞一起是构成心脏瓣膜内稳态最重要的细胞。成肌纤维细胞是一种能够表达平滑肌α-平滑肌肌动蛋白和Ⅰ型胶原纤维、并具有一定分化潜能的重要的瓣膜间质细胞,不仅在瓣膜的结构中起着支架作用,尤其在瓣膜的正常生理以及病理应答过程中发挥着重要的调控作用。
钙化性心脏瓣膜病:多指老年退行性心脏瓣膜病。随着年龄增长,心脏瓣膜结缔组织发生退行性变、纤维化、钙化等,而导致的瓣膜或支架的功能异常。目前,钙化性主动脉瓣疾病已成为主动脉瓣狭窄及瓣膜置换的首要病因,预计其发病率进一步提高,但其发病机制尚不明确。
摘要
背景:
瓣膜间质细胞是心脏瓣膜中的主要细胞成分,成肌纤维细胞是一种能够表达平滑肌α-平滑肌肌动蛋白和Ⅰ型胶原纤维,并具有一定分化潜能的重要的瓣膜间质细胞,不仅在瓣膜的结构中起着支架作用,尤其在瓣膜的正常生理以及病理应答过程中发挥着重要的调控作用。
目的:建立一套可靠的心脏瓣膜成肌纤维细胞分离、原代培养与鉴定的方法,为心瓣膜钙化等疾病的进一步研究奠定基础。
方法:①从猪心中获取主动脉辨,分别用酶联和消化法、普通酶消化法以及组织块种植法提取猪主动脉瓣瓣膜成肌纤维细胞,进行原代培养;②显微镜观察3种方法培养出的成肌纤维细胞的活性和形态;③用光学显微镜和免疫细胞化学方法鉴定细胞。
结果与结论:①3种方法中,利用胰酶和胶原酶Ⅱ联合消化,然后迅速终止消化的方法获得成肌纤维细胞的活性更高,状态更好,纯度更高;②在荧光显微镜下,观察到获得的主动脉瓣成肌纤维细胞α-平滑肌肌动蛋白染色阳性,抗血管性血友病因子染色阴性,提示培养的细胞为成肌纤维细胞。

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程
ORCID: 0000-0003-3083-6477(刘凤丹)

关键词: 组织构建, 组织工程, 瓣膜钙化, 瓣膜间质细胞, 成年猪, 成肌纤维细胞, 平滑肌细胞, 细胞培养, 分离, 纯化, 细胞鉴定, 国家自然科学基金

Abstract:

BACKGROUND: Valvular interstitial cells are the main components of the heart valves. Myofibroblasts, as a kind of valvular interstitial cells, can express alpha-smooth muscle actin and type I collagen fiber, and hold differentiation potential. These cells cannot only play a support role in the valve structure, but also play a regulatory role in the process of the valve normal physiological and pathological responses.
OBJECTIVE: To obtain a reliable method of separation, primary culture and identification of myofibroblasts laying a foundation for further study on the cardiac valvular calcification.
METHODS: Aortic valve myofibroblas extracted from porcine hearts were primary cultured by trypsin and collagenase combined digestive method, common enzyme-digestion method and tissue-culture method, respectively. The myofibroblast activity and morphology were observed using microscope, and myofibroblasts were identified using light microscope and immunocytochemistrial method.
RESULTS AND CONCLUSION: Myofibroblasts had a higher activity and purity cultured by trypsin combined with collagenase II digestion method. Aortic valve myofibroblasts were positive for alpha-smooth muscle actin and negative for von Willebrand factor under fluorescence microscope, suggesting that myofibroblasts were successfully obtained.

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

Key words: Cell Culture Techniques, Cell Separation, Myocytes, Smooth Muscle, Tissue Engineering

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