在本地血液形成中对血统命运的克隆分析
Alejo E Rodriguez-Fraticelli1,2, Samuel L Wolock3, Caleb S Weinreb3
1Stem Cell Program, Boston Children's Hospital, Boston, Massachusetts 02115, USA.
Nature
|January 12, 2018
概括
这项研究揭示了血液细胞生产的新路线图. 这表明巨细胞系独立发展, 挑战现有的干细胞命运模型.
科学领域:
- 血液学
- 发育生物学
- 干细胞生物学
背景情况:
- 血液形成包括干细胞和祖细胞的等级.
- 目前的血统模型通常是基于移植研究,而不是本地命运.
- 了解无干扰的血液形成对于精确的血统测绘至关重要.
研究的目的:
- 为了阐明在未受干扰的状态下血液形成的克隆路线图.
- 确定最早的血统选择和细胞中间体.
- 修改现有的造血干细胞和祖细胞分化模型.
主要方法:
- 使用转子标记来对干细胞和祖细胞进行克隆追踪.
- 使用单细胞RNA测序进行详细的细胞分析.
- 在没有移植的情况下研究血液形成.
主要成果:
- 确定了一个独特的克隆路线图, 巨核细胞系独立出现.
- 揭示了祖先中产生单系和寡系克隆的等级结构.
- 已证实长期的造血干细胞主要导致大细胞受限的原始细胞.
结论:
- 巨核细胞系有一个独特的发展途径,
- 建议对未受干扰的血液形成进行修订.
- 造血干细胞和多能原生细胞表现出不同的本位性质.
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