中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (41): 6197-6202.doi: 10.3969/j.issn.2095-4344.2016.41.018

• 干细胞培养与分化 stem cell culture and differentiation • 上一篇    下一篇

肾脂肪囊与腹股沟来源脂肪干细胞体外培养的生物学特性

朱永生,邓青富,利  军   

  1. 泸州医学院附属医院泌尿外科,四川省泸州市  646000
  • 修回日期:2016-08-27 出版日期:2016-10-07 发布日期:2016-10-07
  • 作者简介:朱永生,男,1979年生,四川省荣县人,汉族,主治医师,主要从事泌尿方面的研究。

Biological characteristics of adipose-derived stem cells derived from renal fat capsule and groin in vitro

Zhu Yong-sheng, Deng Qing-fu, Li Jun   

  1. Department of Urinary Surgery, Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • Revised:2016-08-27 Online:2016-10-07 Published:2016-10-07
  • About author:Zhu Yong-sheng, Attending physician, Department of Urinary Surgery, Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan Province, China

摘要:

文章快速阅读:

文题释义:
Ⅱ型胶原:
主要分布在透明软骨、玻璃体、髓核、胚胎角膜、视网神经膜,由于Ⅱ型胶原中富含羟赖氨酸,并且羟赖氨酸的羟基几乎全部和糖结合,因而糖化率高,含糖量约为10%。Ⅱ型胶原是软骨和玻璃液中的主要胶原,是构成软骨基质的主要成分之一,能够促进软骨细胞的分化,对类风湿性关节炎有特异性的治疗作用。
聚集蛋白聚糖(aggrecan):最初从软骨组织分离得到的一种蛋白聚糖,其核心蛋白质由多种结构域组成,并接有大约100条硫酸软骨素链,在软骨细胞合成的细胞外基质中聚集蛋白聚糖所占的比例大于其他蛋白聚糖。

 

摘要
背景:
脂肪组织来源丰富,不同部位脂肪组织分离培养的脂肪干细胞在体外生物学特性上是否存在差异,目前相关研究较少。
目的:观察肾脂肪囊来源与腹股沟来源脂肪干细胞的体外增殖和成软骨诱导分化能力。
方法:收集大鼠肾脂肪囊来源与腹股沟区来源组织进行脂肪干细胞培养与鉴定,MTT法检测两组细胞的体外增殖能力。取第3代细胞进行软骨定向诱导2周,免疫荧光检测诱导后细胞CollagenⅡ表达,RT-PCR检测两组细胞诱导后Aggrecan、Collagen ⅡmRNA表达水平。
结果与结论:①肾脂肪囊来源与腹股沟区来源脂肪干细胞经原代与传代培养,形态基本一致;②经流式细胞仪检测,不同来源脂肪干细胞的CD44阳性率均达到95%以上;③两组细胞的体外生长曲线均呈“S”型;④诱导后两组细胞均表现出CollagenⅡ阳性表达;⑤两组细胞的Aggrecan、Collagen ⅡmRNA表达水平比较差异无显著性意义(P > 0.05);⑥结果显示,肾脂肪囊来源与腹股沟区来源脂肪干细胞均在体外生长稳定,迅速增殖,经定向诱导向软骨细胞发生分化,二者无明显区别。

 

 

关键词: 干细胞, 培养, 脂肪组织, 脂肪干细胞, 肾脂肪囊, 腹股沟, 体外培养, 细胞增殖, 软骨细胞, 细胞分化, 定向诱导

Abstract:

BACKGROUND: Adipose-derived stem cells have different sources, but it is unclear whether these cells from different sources have difference in their biological properties.
OBJECTIVE: To detect the in vitro proliferation and chondrogenic differentiation of adipose-derived stem cells derived from renal fat capsule and groin.
METHODS: Adipose-derived stem cells from renal fat capsule and groin of rats were isolated, cultured and identified. MTT assay was used to detect in vitro proliferation ability of these cells. Passage 3 cells were under chondrogenic induction for 2 weeks. After induction, the expression of type II collagen was observed by immunofluorescence detection, and RT-PCR was employed to detect the expression levels of Aggrecan and type II collagen mRNA in the two groups.
RESULTS AND CONCLUSION: After primary culture and passage, adipose-derived stem cells from the renal fat capsule and groin of rats exhibited similar morphology, and over 95% of cells expressed CD44 in the two groups. Adipose-derived stem cells from two sources showed an S-shaped growth curve in vitro and were positive for type II collagen. After RT-PCR detection, the expression levels of Aggrecan and type II collagen mRNA had no difference in adipose-derived stem cells from renal fat capsule and groin (P > 0.05). Experimental results show that adipose-derived stem cells from both renal fat capsule and groin exhibit stable growth, rapid proliferation and chondrogenic differentiation under orient induction in vitro, indicating there is no difference between these cells from two sources.

 

 

Key words: Stem Cells, Adipose Tissue, Kidney, Groin, Tissue Engineering

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