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人脐带间充质干细胞治疗放射性肺损伤的研究 被引量:6

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摘要 目的探讨分离、培养、标记人脐带间充质干细胞(u-MSCs)的方法及其对放射性肺损伤的治疗作用。方法无菌取得健康孕妇并剖宫产胎儿的脐带,按照贴壁培养法分离培养获取第三代u-MSCs,并用BrdU标记。将大鼠随机分为对照组(A组)、单纯照射组(B组)、u-MSCs治疗组(C组),利用细胞培养技术检测u-MSCs对放射性肺损伤的治疗作用,对比检测各组大鼠TNF-a的含量,肺组织的病理改变。结果可通过贴壁培养法从人脐带分离、培养生长状态良好的u-MSCs,且这些细胞更为原始,更为年轻。BrdU是u-MSCs的良好标记物,阳性标记部位在细胞核,成功率较高。与A组比较,B组肺泡腔内有渗出,间隔增宽,有纤维化样变,血浆TNF-a水平显著增高。与B组比较,C组肺泡间隔增宽不明显,未见纤维化样改变,TNF-a水平在各时相均低于B组,肺组织损伤程度较B组明显改善。结论从人脐带可以分离、培养出生长状态良好的u-MSCs。经尾静脉注射u-MSCs后对放射性肺损伤有一定的保护作用。
出处 《中国医学工程》 2013年第2期36-37,共2页 China Medical Engineering
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