Chinese Journal of Tissue Engineering Research ›› 2014, Vol. 18 ›› Issue (10): 1521-1531.doi: 10.3969/j.issn.2095-4344.2014.10.008

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Large-scale expansion of clinical-grade human adipose-derived stem cells using the extracellular matrix

Su Yue-han1, Wei Chao2, Lv Pin-lei2, Cao Yun1, Qiu Yun2, Zheng Qing2, Xiao Shu-dong2, Wang Zheng 1, 2    

  1. 1 Stem Cell Laboratory, Translational Medicine Base for Biological Cell Engineering Technology, Nanjing Military Region, the 455 Hospital of PLA, Shanghai 200052, China; 2 Department of Digestion, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200001, China
  • Online:2014-03-05 Published:2014-03-05
  • Contact: Wang Zheng, M.D., Associate investigator, Department of Digestion, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200001, China; Stem Cell Laboratory, Translational Medicine Base for Biological Cell Engineering Technology, Nanjing Military Region, the 455 Hospital of PLA, Shanghai 200052, China
  • About author:Su Yue-han, Master, Stem Cell Laboratory, Translational Medicine Base for Biological Cell Engineering Technology, Nanjing Military Region, the 455 Hospital of PLA, Shanghai 200052, China
  • Supported by:

    Pujiang Talent Plan of Science and Technology Commission of Shanghai Municipality, No. 09PJ1407300; the National Natural Science Foundation of China, No. 30971468

Abstract:

BACKGROUND: Large-scale expansion of undifferentiated and multipotential adipose-derived stem cells using serum-free culture system is a difficult issue to be resolved.
OBJECTIVE: To establish an in vitro culture system combined with the extracellular matrix in order to investigate the efficiency, effectiveness and security of extracellular matrix on expanding adipose-derived stem cells.
METHODS: In vitro isolated adipose-derived stem cells were seeded in traditional two-dimensional plastic plates and extracellular matrix-coated plates supplemented with serum-free medium respectively. After in vitro  expansion, total cell number, expression of cell surface markers, cell senescence degree and multipotent differentiation ability (adipogenic, osteoblastic and chondrogenic differentiation) of adipose-derived stem cells cultured under both conditions were detected and compared. Moreover, the clinical safety of adipose-derived stem cells expanded in extracellular matrix-coated plates was investigated.
RESULTS AND CONCLUSION: Total cell number of passage 5 adipose-derived stem cells cultured in extracellular matrix-coated plates was 10 times more than that in traditional two-dimensional plastic plates. Flow-cytometric analysis showed that adipose-derived stem cells cultured with extracellular matrix expressed stem cell surface markers. Cellular senescence examination showed that almost all of passage 15 adipose-derived stem cells cultured with extracellular matrix showed no aging, while most passage 5 adipose-derived stem cells cultured by the two-dimensional system aged and lost their proliferation ability. Multidirectional induction of adipose-derived stem cells showed that passage 15 adipose-derived stem cells cultured with extracellular matrix could still differentiate into adipocytes, osteoblasts and chondrocytes as passage 5 adipose-derived stem cells did, which performed much better than the induced differentiations of passage 5 adipose-derived stem cells cultured by the two-dimensional system. Karyotype analysis and in vivo invasion experiment insured the clinical safety of adipose-derived stem cells expanded with extracellular matrix. All above results suggest a safe and more efficient expansion system of extracellular matrix for clinical application using the serum-free culture system combined with extracellular matrix.


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


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Key words: stem cells, mesenchymal stem cells, extracellular matrix, serum, cell culture techniques

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