Chinese Journal of Tissue Engineering Research ›› 2015, Vol. 19 ›› Issue (1): 18-23.doi: 10.3969/j.issn.2095-4344.2015.01.004

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Age-associated proliferation and differentiation changes of rat bone marrow mesenchymal stem cells

Li Hai-rui, Zheng Dong, Jiang Can, Guo Jun, Zhang Ai-dong, Li Zi-cheng   

  1. Department of Cardiology, the First Affiliated Hospital of Jinan University, Guangzhou 510630, Guangdong Province, China
  • Revised:2014-11-20 Online:2015-01-01 Published:2015-01-01
  • Contact: Guo Jun, M.D., Associate chief physician, Associate professor, Department of Cardiology, the First Affiliated Hospital of Jinan University, Guangzhou 510630, Guangdong Province, China
  • About author:Li Hai-rui, Studying for master’s degree, Department of Cardiology, the First Affiliated Hospital of Jinan University, Guangzhou 510630, Guangdong Province, China
  • Supported by:

    the National Natural Science Foundation of China for the Youth, No. 81100078; the Key Science Research Project of the Ministry of Education, No. 211207; the Zhujiang Scientific New Star Plan of Guangzhou, No. 2012J2200063; the Doctoral Startup Program of Guangdong Science and Technology Commission, No. S2011040001392

Abstract:

BACKGROUND: Autologous bone marrow mesenchymal stem cell transplantation for the treatment of cardiovascular disease has become one of the hotspots, but it is unclear whether the proliferation and directional differentiation of autologous bone marrow mesenchymal stem cells varies changes with age.
OBJECTIVE: To explore the proliferation and differentiation changes of rat bone mesenchymal stem cells in different ages.
METHODS: The bone marrow mesenchymal stem cells from Sprague-Dawley rats in different age groups were purified and cultured, and then examined by flow cytometry in terms of cell cycle. Meanwhile, neonatal rat cardiomyocytes were co-cultured with bone marrow mesenchymal stem cells. The morphologic changes of bone marrow mesenchymal stem cells and the protein expression of troponin T were detected with immunofluorescence technique.
RESULTS AND CONCLUSION: The percentage of bone marrow mesenchymal stem cells in G0/G1 phase was increased with age; while the percentage of expression of troponin T proteins-positive bone marrow mesenchymal stem cells were decreased with age. These findings indicate that the proliferation and differentiation abilities of rat bone marrow mesenchymal stem cells descend with age.


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


全文链接:

Key words: Bone Marrow, Mesenchymal Stem Cells, Troponin T, Cell Proliferation

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