Chinese Journal of Tissue Engineering Research

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Estrogen effects on adipogenic differentiation of cryopreserved adipose-derived mesenchymal stem cells from the adipose capsule of kidney

Zhang Hui1, 2, Zheng Hong-guang2, Zhang De-wei2, Mei Yu-ming2   

  1. 1Postgraduate Culture Base, General Hospital of Shenyang Military Region, Liaoning Medical University, Shenyang  110016, Liaoning Province, China; 2Department of Nephrology, General Hospital of Shenyang Military Region, Shenyang  110016, Liaoning Province, China
  • Received:2013-02-21 Revised:2013-04-15 Online:2013-07-02 Published:2013-07-02
  • Contact: Zheng Hong-guang, M.D., Professor, Chief physician, Master’s supervisor, Department of Nephrology, General Hospital of Shenyang Military Region, Shenyang 110016, Liaoning Province, China phd528@sohu.com
  • About author:Zhang Hui★, Studying for master’s degree, Postgraduate Culture Base, General Hospital of Shenyang Military Region, Liaoning Medical University, Shenyang 110016, Liaoning Province, China; Department of Nephrology, General Hospital of Shenyang Military Region, Shenyang 110016, Liaoning Province, China
  • Supported by:

    the Scientific and Technological Plan of Liaoning Province in 2011 (First Batch), No. 2011225021*

Abstract:

BACKGROUND: Estrogen exerts a negative regulatory role in adipogenic differentiation of adipose stem cells, but there is no report concerning estrogen effects on adipogenic differentiation of adipose stem cells from the adipose capsule of kidney after long-term cryopreservation.
OBJECTIVE: To explore the impact of estrogen on adipogenic differentiation of fresh adipose-derived mesenchymal stem cells from the kidney adipose capsule or those after long-term cryopreservation.
METHODS: Passage 3 long-term cryopreserved and fresh adipose-derived mesenchymal stem cells from the kidney adipose capsule were divided into four groups, all of which were induced to adipogenic cells by induced fluid: fresh cells + 10-7 mol/L estrogen, cryopreserved cells + 10-7 mol/L estrogen, fresh cells and cryopreserved cells groups. Oil red O staining and adipogenic quantitative detection were performed at 14 days after induced adipogenic differentiation.
RESULTS AND CONCLUSION: There were no differences in the morphology and arrangement between the cryopreserved and fresh cells. Both cryopreserved and fresh cells expressed CD29 and CD 44, but did not express CD31. Intracellular lipid droplets were observed after adipogenic differentiation by oil red O staining, and the cells were positive for oil red O staining. The adipogenic volume comparison among the four groups was detected on day 14 after adipogenic differentiation, and the absorbance values showed significant difference between the fresh cells and fresh cells + estrogen groups, as well as between the cryopreserved cells and cryopreserved cells + estrogen groups, but no difference between the fresh and cryopreserved cells groups. It is proved that low-dose estrogen can inhibit the adipogenic differentiation of long-term cryopreserved adipose-derived mesenchymal stem cells from the kidney adipose capsule; however, there is no significant difference between passage 3 long-term cryopreserved and fresh adipose-derived mesenchymal stem cells from the kidney adipose capsule in adipogenic differentiation.

Key words: stem cells, adipose-derived stem cells, kidney adipose capsule, adipose-derived mesenchymal stem cells, long-term cryopreservation, resuscitation, adipogenic differentiation, estrogen, oil red O staining, provincial grants-supported paper, stem cell photographs-containing paper

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