Nat Methods:一种特殊的“多功能干细胞”,有望修复肺损伤

2017-11-17 Flora 生物探索

近期,来自于斯坦福大学、新加坡基因组研究所的科学家团队寻找到一种特殊的干细胞,它能够在小鼠肺部生成两种不同的组织细胞。这一发现有望为肺病患者带来新的治疗方案。

近期,来自于斯坦福大学、新加坡基因组研究所的科学家团队寻找到一种特殊的干细胞,它能够在小鼠肺部生成两种不同的组织细胞。这一发现有望为肺病患者带来新的治疗方案。


干细胞修复受损的小鼠肺部,红色代表再生的肺组织,绿色代表干细胞(图片来源:斯坦福干细胞研究所)

肺部是人类重要的呼吸器官,与心血管系统相连,主要由气管、肺泡两个基本单位组成,分别由两个不同的谱系限制性干细胞维持。11月6日,《Nature Methods》期刊在线发表一篇题为“Isolation and 3D expansion of multipotent Sox9+ mouse lung progenitors”的文章,揭示了一种全新的干细胞,可以同时分化生成气管和肺泡细胞。

对于许多终末期肺病患者而言,唯一的而选择只能是肺移植。然而迄今为止,科学家们还未能成功做到移植这一点(将新的肺细胞移植至受损肺部)。文章作者、斯坦福干细胞生物学和再生医学研究所的研究员Kyle Loh希望,这一研究能够有所突破。

研究团队从小鼠肺部分离出这一种“多能性干细胞”,可以在气管和肺泡中同时生成相应的细胞。这类干细胞的典型特征是表达有蛋白标志物Sox9。

研究发现,每只小鼠的肺干细胞能够在6个月时间内从1个扩增出1000亿个干细胞,这是之前所未能达到的数量指标。随后,研究人员将这些干细胞注入小鼠肺部(受多种毒素伤害)。结果显示,它们能够修复受损的组织,并分成多种不同类型的体细胞,重塑健康的肺。

“我们能够培养得到大量的多功能肺干细胞,而且这些细胞具有再生出气管、肺泡组织的能力,这是肺再生医学的关键一步。” 新加坡基因组研究所的研究员Bing Lim总结道。

原始出处:Massimo Nichane, Asif Javed, V Sivakamasundari, et al. Isolation and 3D expansion of multipotent Sox9+ mouse lung progenitors. Nature Methods(2017)

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    2018-08-27 一闲
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    2018-03-31 一叶知秋
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    2017-11-19 tastas
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    2017-11-17 1ddf0692m34(暂无匿称)

    学习了.涨知识

    0

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