中国组织工程研究

• 脂肪干细胞 adipose-derived stem cells • 上一篇    下一篇

雌激素影响冻存肾脂肪囊来源脂肪间充质干细胞的成脂分化

张  慧1,2,郑红光2,张德伟2,梅煜明2   

  1. 1辽宁医学院解放军沈阳军区总医院研究生培养基地,辽宁省沈阳市  110016;2解放军沈阳军区总医院肾脏病科,辽宁省沈阳市  110016
  • 收稿日期:2013-02-21 修回日期:2013-04-15 出版日期:2013-07-02 发布日期:2013-07-02
  • 通讯作者: 郑红光,博士,教授,主任医师,硕士生导师,解放军沈阳军区总医院肾脏病科,辽宁省沈阳市 110016 phd528@sohu.com
  • 作者简介:张慧★,女,1986年生,山东省泰安市人,汉族,辽宁医学院在读硕士,主要从事肾脏疾病的干细胞治疗的研究。
  • 基金资助:

    2011年辽宁省第一批次科学技术计划项目(2011225021),肾脂肪囊来源脂肪干细胞向肾脏固有细胞分化及其在肾脂肪囊和肾组织中迁徙及归巢的实验研究。

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*

摘要:

背景:雌激素对脂肪干细胞向脂肪细胞诱导分化会有负向调节作用,但对长期深低温保存的肾脂肪囊来源脂肪间充质干细胞向脂肪细胞分化的效果尚未见报道。
目的:探讨雌激素对长期深低温保存的及新鲜提取的肾脂肪囊来源脂肪间充质干细胞成脂分化能力的影响。
方法:将长期深低温保存后复苏的及新鲜提取的第3代肾脂肪囊来源脂肪间充质干细胞分为4组进行成脂诱导分化,新鲜+雌激素组和冻存+雌激素组诱导时添加10-7 mol/L雌激素,新鲜组和冻存组不添加。成脂诱导分化14 d进行油红O染色及成脂量定量检测。
结果与结论:长期深低温保存后复苏的第3代肾脂肪囊来源脂肪间充质干细胞与新鲜提取的细胞形态和排列无差异;长期深低温保存后复苏的与新鲜提取的第3代肾脂肪囊来源脂肪间充质干细胞表面抗原分子CD29、CD44均呈阳性,CD31均呈阴性表达。成脂诱导后可观察到细胞内有脂滴形成,油红O 染色呈阳性。在成脂诱导分化14 d对各组进行成脂量比较,新鲜组与新鲜+雌激素组,冻存组与冻存+雌激素组的吸光度之间比较,差异有显著性意义,但新鲜组与冻存组之间差异无显著性意义。结果表明:小剂量雌激素可抑制长期深度低温保存后复苏的肾脂肪囊来源脂肪间充质干细胞的成脂分化;长期深低温保存后复苏的与新鲜提取的第3代肾脂肪囊来源脂肪间充质干细胞在成脂诱导方面无显著性差异。

关键词: 干细胞, 脂肪干细胞, 肾脂肪囊, 脂肪间充质干细胞, 长期深低温保存, 复苏, 成脂分化, 雌激素, 油红O染色, 省级基金, 干细胞图片文章

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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