转录程序是人类单细胞差异化和多样性的基础.
Ravi K Komaravolu1, Daniel J Araujo2, Catherine C Hedrick1
1Immunology Center of Georgia, Medical College of Georgia at Augusta University, 1410 Laney Walker Blvd, CN 2120, Augusta, GA 30912, United States.
Journal of leukocyte biology
|July 9, 2025
概括
这项研究揭示了驱动单细胞分化的主要转录调节者. 它确定了不同的基因调节网络,定义了经典,中间和非经典单细胞子集及其转化过程.
科学领域:
- 免疫学 免疫学 免疫学
- 文字转录学 (Transcriptomics) 是一个学科.
- 系统生物学 系统生物学
背景情况:
- 单细胞分化为不同的子集:经典,中间和非经典.
- 了解单细胞分化的转录调节对免疫学至关重要.
研究的目的:
- 研究控制单细胞分化和转换的转录性调节网络.
- 识别与不同单细胞子集相关的关键规律和生物过程.
主要方法:
- 来自健康个体的三个单细胞RNA测序数据集的分析.
- 应用单细胞监管网络推断和集群包 (SCENIC).
- 细胞的重新注释和调节活动的分析和伪时代建模.
主要成果:
- 鉴定了220个共享的 regulons 跨髓质子集,与不同的 regulons 标志着古典和非古典单细胞.
- 中间单细胞代表了一个过渡状态,与经典和非经典类型共享调节.
- 发现了经典单细胞 (例如,HMGB2,FOSB),非经典单细胞 (例如,TCF7L2) 和树突细胞 (例如,cDCs的RUNX1,pDCs的AR/RUNX2) 的特定调节子签名.
- 突出了FLI1作为所有单核细胞的关键调节剂,并确定了活性调节素的共同核心 (例如,RELB,ID1,CLOCK).
- 伪物质模拟证实单细胞转化是一个连续的过程.
结论:
- 转录调节程序在定义单核细胞身份方面发挥着关键作用.
- 调节活性分析为髓状细胞生物学和单细胞多样性提供了新的见解.
- 独特的调节子签名可以区分单细胞子集,并阐明它们的分化途径.
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