882-人类造血干细胞发育与分化的全生命周期分子图谱 episode artwork

EPISODE · May 1, 2026 · 18 MIN

882-人类造血干细胞发育与分化的全生命周期分子图谱

from 聊聊Sci

这项研究通过单细胞蛋白质组与转录组测序技术,绘制了人类生命周期中造血干细胞(HSC)早期分化的连续分子图谱。研究人员利用创新的深度靶向测序手段,揭示了处于造血层级顶端的极不成熟干细胞群在分化初期的基因网络动态,并确认了其分化路径在不同年龄阶段保持一致。实验重点发现 CD273 (PD-L2) 是识别这群具有高度静止性和多向分化潜能干细胞的关键表面标志物。此外,研究证实了这些干细胞具有免疫调节功能,能通过 CD273 信号通路有效抑制 T 细胞的增殖与激活。随着人体衰老,这些干细胞不仅在数量上有所增加,其分化效率也呈现出明显的下降趋势。这一成果为开发针对造血系统疾病的治疗性干预措施提供了重要的分子蓝图。References: Komic H, Schmachtel T, Simoes C, et al. Continuous map of early hematopoietic stem cell differentiation across human lifetime[J]. Nature Communications, 2025, 16(1): 2287.前往小宇宙评论区与主播互动

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882-人类造血干细胞发育与分化的全生命周期分子图谱

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