中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (24): 3875-3880.doi: 10.3969/j.issn.2095-4344.2017.24.018

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

乳鼠心肌细胞可成片生长的分离和培养方法

黄绍代1,2,3,陈 鹏4,吴 超2,胡 丹2,彭 江3,田建伟1,2   

  1. 1安徽医科大学,安徽省合肥市 230032;2解放军空军总医院,北京市 100142;3解放军总医院全军骨科研究所,北京市 100853;4中国医科大学第一附属医院,辽宁省沈阳市   110001
  • 修回日期:2017-03-17 出版日期:2017-08-28 发布日期:2017-08-30
  • 通讯作者: 田建伟,博士,教授,硕士生导师,副主任医师,安徽医科大学空军临床学院心血管内科,北京市 100142
  • 作者简介:黄绍代,男,1991年生,江西省赣州市人,汉族,安徽医科大学在读硕士,主要从事心脏组织工程方面的研究。
  • 基金资助:

    国家自然科学基金资助项目(81070209)

Isolation and culture of neonatal rat cardiomyocytes growing in sheets

Huang Shao-dai1, 2, 3, Chen Peng4, Wu Chao2, Hu Dan2, Peng Jiang3, Tian Jian-wei1, 2   

  1. 1Anhui Medical University, Hefei 230032, Anhui Province, China; 2Air Force General Hospital of PLA, Beijing 100142, China; 3Key Laboratory of PLA, Institute of Orthopedics, General Hospital of Chinese PLA, Beijing 100853, China; 4the Affiliated First Hospital of China Medical University, Shenyang 110001, Liaoning Province, China
  • Revised:2017-03-17 Online:2017-08-28 Published:2017-08-30
  • Contact: Tian Jian-wei, M.D., Professor, Master’s supervisor, Associate chief physician, Anhui Medical University, Hefei 230032, Anhui Province, China; Air Force General Hospital of PLA, Beijing 100142, China
  • About author:Huang Shao-dai, Studying for master’s degree, Anhui Medical University, Hefei 230032, Anhui Province, China; Air Force General Hospital of PLA, Beijing 100142, China; Key Laboratory of PLA, Institute of Orthopedics, General Hospital of Chinese PLA, Beijing 100853, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81070209

摘要:

文章快速阅读:

文题释义:
可成片生长的心肌细胞:
文章在传统的心肌细胞培养方法基础上,培养出可连接成片状生长的心肌细胞,成片生长的心肌细胞可实现同步搏动,避免了单个心肌细胞搏动的不协调性,为心脏组织工程的研究提供更优质的种子细胞,更有利于心肌梗死后心脏的修复和再生。
二次差速贴壁分离法:为获得高纯度、活力好的心肌细胞,需将细胞悬液中的大量的成纤维细胞去除,因为成纤维细胞等分裂增殖能力较强的细胞会逐渐占据优势,并抑制心肌细胞的生长。随着差速贴壁的次数增加,时间的延长,细胞纯度也随之增加,其中,差速贴壁两次心肌细胞纯度提高最为显著且对细胞活性影响不大。

 

摘要
背景:
传统方法培养的心肌细胞活力、纯度仍不高,细胞多呈簇状生长,细胞与细胞之间的联系较少,细胞多呈单个搏动。
目的:改进传统的乳鼠心肌细胞培养方法,获得纯度高、成片生长的心肌细胞。
方法:运用0.1%胰蛋白酶4 ℃过夜消化心肌组织后加入Ⅱ型胶原酶重复消化,二次差速贴壁分离法联合化学抑制剂纯化心肌细胞。倒置相差显微镜下动态观察心肌细胞形态变化,培养48 h后用抗心肌肌钙蛋白T抗体鉴定心肌细胞纯度,连续10 d隔日记录心肌细胞的搏动频率。
结果与结论:①心肌细胞在24 h内贴壁,72 h后成簇状分布,5-7 d细胞连接成片生长;②细胞存活率为96%,免疫荧光鉴定心肌细胞纯度97%以上,连续10 d内心肌细胞搏动频率差异无显著性意义(P > 0.05);③综上,通过这种改进的培养方式获得成片生长的心肌细胞纯度、活力更高,是一种更为有效的乳鼠心肌细胞培养方法。

 

关键词: 组织构建, 组织工程, 乳鼠, 心肌细胞, 原代培养, 成片生长, 国家自然科学基金

Abstract:

BACKGROUND: The cardiomyocytes obtained by traditional culture methods exhibit poor purity and viability, cells grow in clusters, the connection between cells is less, and most of cells beat separately.
OBJECTIVE: To obtain high-purity cardiomyocytes presenting with a sheet-like growth by modified culture method.
METHODS: Myocardial tissues were digested using 0.1% trypsin at 4 ℃ overnight, and then digested repeatedly through the addition of type II collagenase, and finally were isolated and purified by differential adhesion method combined with chemical inhibitors. The morphology of cardiomyocytes was observed under inverted phase contrast microscope. The purity of cardiomyocytes was identified by cardic troponin T antibody after cultured for 48 hours. The beating frequency of cardiomyocytes was recorded every two days for 10 consecutive days.
RESULTS AND CONCLUSION: The cardiomyocytes adhered within 24 hours of culture, distributed in clusters at 72 hours and grew in sheets at 5-7 days of culture. The survival rate of cardiomyocytes was 96% and the purity identified by immunofluorescence was over 97%. There was no significant difference in the beating frequency at different time. These results suggest that the high-purity and high-viability cardiomyocytes are obtained by the modified culture method, which is an effective method for culturing neonatal cardiomyocytes.

 

Key words: Mice, Myocytes, Cardiac, Cells, Cultured, Survival Rate, Hydrocortisone, Tissue Engineering

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