在小鼠骨髓中鉴定克隆原性常见淋巴原始体
M Kondo1, I L Weissman, K Akashi
1Department of Pathology, Stanford University School of Medicine, California 94305, USA.
Cell
|December 11, 1997
概括
研究人员在小鼠骨髓中发现了一种特定的祖先细胞,能够产生T细胞,B细胞和自然杀手 (NK) 细胞. 这一发现为早期血液形成中常见的淋巴细胞原始体提供了直接证据.
科学领域:
- 血液学 血液学 血液学
- 免疫学 免疫学 免疫学
- 干细胞生物学 干细胞生物学
背景情况:
- 一种常见的淋巴细胞原体 (CLP) 的存在是血液造血干细胞研究中的一个关键,但仍有争议的话题.
- 当前的造血系谱图对淋巴细胞系谱的确切起源存在差距.
研究的目的:
- 为了研究成年小鼠骨髓中特定的原始细胞群体的特性.
- 要确定这个群体是否代表了淋巴细胞受限制的祖先.
主要方法:
- 从成年小鼠骨髓中分离了Lin-IL-7R-Thy-1-Sca-1loc-Kitlo细胞群.
- 在体内和体外对淋巴细胞和骨髓细胞分化潜力的评估.
- 单细胞测定用于评估溶解能力.
主要成果:
- 在Lin-IL-7R-+-Thy-1-Sca-1loc-Kit-lo群体中,在体内表现出迅速的淋巴细胞受限复合 (T,B和NK细胞).
- 这种祖先种群完全缺乏髓状细胞分化潜力.
- 这种群体中的单个细胞可以产生T细胞和B细胞.
结论:
- 这项研究直接证实了成年老鼠骨髓中常见的淋巴细胞原始体的存在.
- 这些发现填补了了解造血系发展的重要差距.
- 已识别的原始细胞是淋巴细胞受限的,有助于T,B和NK细胞的产生.
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