单细胞转录组学和血统追踪揭示了淋巴肌和静脉光滑肌发育,身份和功能中的平行线
Guillermo Arroyo-Ataz1, Alejandra Carrasco Yagüe1, Julia C Breda2
1Department of Pathology and Laboratory Medicine, Boston University Chobanian & Avedisian School of Medicine, MA. (G.A.-A., A.C.Y., D.J.).
Arteriosclerosis, thrombosis, and vascular biology
|May 15, 2025
概括
淋巴肌细胞 (LMCs) 与静脉光滑肌细胞 (SMCs) 共享一个中皮的起源,揭示了淋巴血管收缩性和淋巴的洞察力. 这一发现有助于理解LMC的功能,并开发有针对性的疗法.
科学领域:
- 血管生物学 血管生物学
- 发展生物学 发展生物学
- 细胞生物学 细胞生物学
背景情况:
- 淋巴肌细胞 (LMCs) 对于淋巴血管收缩至关重要,但它们的细胞和分子基础仍然不太清楚.
- 功能障碍的LMC与原发性和二次性淋巴有关,突出显示了治疗点的必要性.
研究的目的:
- 研究淋巴肌细胞 (LMC) 特征的细胞和分子基础.
- 了解LMC与血管光滑肌细胞 (SMCs) 相关的起源和功能性质.
主要方法:
- 单细胞RNA测序以比较LMC和SMC转录组.
- 遗传谱系追踪以确定LMC的发育起源.
- 免疫染和静脉内成像,以评估淋巴和血管功能.
主要成果:
- 轻微肌肉细胞和静脉肌肉细胞共享重叠的转录基因特征,与动脉状肌肉细胞不同.
- 脊髓癌和后肢血管表现出由通道调节的脉动性收缩性.
- 谱系追踪显示,LMCs来源于WT1+中皮原始体,而不是心肌细胞或神经源.
结论:
- 淋巴肌细胞 (LMCs) 和静脉光滑肌细胞 (SMCs) 源自一个共同的中皮原生细胞.
- 共享的基因表达程序有助于LMC和静脉SMC的收缩功能.
- WT1+间皮原体对LMC发育和淋巴血管收缩性至关重要.
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