Chinese Journal of Tissue Engineering Research

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Chondrogenic differentiation of adipose-derived stem cells induced by growth differentiation factor-5 cultured on the type I collagen scaffold 

Liu Zhen-ning1, Han Chang-xu2, Zhao Min1   

  1. 1Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning Province, China; 2Department of Arthroscopy and Sports Medicine, Second Hospital of Inner Mongolia Medical University, Hohhot 010030, Inner Mongolia Autonomous Region, China
  • Online:2015-05-06 Published:2015-05-06
  • Contact: Zhao Min, M.D., Professor, Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning Province, China
  • About author:Liu Zhen-ning, M.D., Lecturer, Attending physician, Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81171793; the Science Research Plan of Liaoning Province Education Administration, No. L2014300

Abstract:

BACKGROUND: Growth differentiation factor-5 can induce adipose-derived stem cells into chondrocytes in our previous studies, but it has not been reported that the adipose-derived stem cells induced by growth differentiation factor-5 can differentiate into chondrocytes on the type I collagen scaffold.
OBJECTIVE: To investigate the chondrogenic differentiation ability of adipose-derived stem cells induced by growth differentiation factor-5 cultured on the type I collagen scaffold.
METHODS: Adipose derived stem cells were isolated from rabbit adipose tissue, the cells morphology was observed using inverted phase contrast microscope and the phenotypes were identified using immunofluorescence. The exogenous growth differentiation factor-5 was added to the cultural media with the type I collagen scaffold so as to induce the chondrogenic differentiation. The cells morphology was observed using hematoxylin-eosin staining and scanning electron microscope after the induction by growth differentiation factor-5 for 14 days. Meanwhile, the type II collagen and aggrecan mRNA expressions of the induced cells were measured using RT-PCR after the induction by growth differentiation factor-5 for 7, 14, and 21 days.
RESULTS AND CONCLUSION: The primary cultured adipose-derived stem cells proliferated adherently with the fusiform and polygonal distribution under inverted phase contrast microscope. The positive CD44, CD49d and negative CD106 were detected by immunofluorescence. The adipose-derived stem cells induced by growth differentiation factor-5 were well adhered to the type I collagen scaffold and strongly proliferated. The large amounts of extracellular matrix existed on the surface of the induced cells under scanning electron microscope. RT-PCR agarose gel electrophoresis indicated that the type II collagen and aggrecan mRNA expressions of the adipose-derived stem cells induced by growth differentiation factor-5 with the type I collagen scaffold were significantly increased. Growth differentiation factor-5 can successfully induce the chondrogenic differentiation of adipose-derived stem cells cultured on the type I collagen scaffold.

Key words: Collagen Type I, Stents, Growth Differentiation Factors, Chondrocytes

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