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Hypoxia Promotes Growth and Viability of Human Adipose-Derived Stem Cells with Increased Growth Factors Secretion

Author

Listed:
  • Jane Ru Choi
  • Belinda Pingguan-Murphy
  • Wan Abu Bakar Wan Abas
  • Mat Adenan Noor Azmi
  • Siti Zawiah Omar
  • Kien Hui Chua
  • Wan Kamarul Zaman Wan Safwani

Abstract

Adipose-derived stem cells (ASCs) have been found residing in a native microenvironment with low oxygen tension (i.e hypoxia) in human body. Oxygen tension plays a crucial role in regulating their function. The aim of this study is to investigate the effects of hypoxia on proliferation and survival rate of ASCs. Human ASCs were cultured at 21% O2 (normoxia) or 2% O2 (hypoxia) for up to three passages. We found that ASCs displayed a higher proliferation rate under hypoxia as compared to normoxia. The viability of ASCs was higher in hypoxia than normoxia without altering their characteristics. These properties might be correlated with the up-regulation of HIF-1α and the increased transcriptional and translational level of growth factors, VEGF-A and bFGF. Taken together, 2% oxygen tension has been suggested as an ideal condition for expansion of ASCs efficiently, where large number of cells can be produced over a short period of time for clinical use.

Suggested Citation

  • Jane Ru Choi & Belinda Pingguan-Murphy & Wan Abu Bakar Wan Abas & Mat Adenan Noor Azmi & Siti Zawiah Omar & Kien Hui Chua & Wan Kamarul Zaman Wan Safwani, 2014. "Hypoxia Promotes Growth and Viability of Human Adipose-Derived Stem Cells with Increased Growth Factors Secretion," Journal of Asian Scientific Research, Asian Economic and Social Society, vol. 4(7), pages 328-338.
    • Handle: RePEc:asi:joasrj:v:4:y:2014:i:7:p:328-338:id:3646
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