用单细胞RNA测序鉴定局部性硬化皮肤内皮细胞子集群的表征 确定NOTCH信号通路
Theresa Hutchins1, Anwesha Sanyal1, Deren Esencan1
1Department of Pediatrics (Rheumatology), University of Pittsburgh, Pittsburgh, PA 15224, USA.
International journal of molecular sciences
|October 16, 2024
概括
局部性硬化症 (LS) 涉及皮肤硬化和纤维化. 这项研究揭示了LS皮肤中患病的内皮细胞促进纤维化,并激活与表皮异常相关的途径,为病原发生提供了新的见解.
科学领域:
- 皮肤病学 皮肤病学
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 局部性硬化皮肤病 (LS) 是一种自身免疫性皮肤疾病,导致炎症和纤维化.
- LS与全身性硬化症 (SSc) 有共同特征,但其分子驱动因素尚不清楚.
- 内皮细胞 (ECs) 涉及到SSc,但未在LS中进行研究.
研究的目的:
- 通过单细胞RNA测序,研究内皮细胞在局部性硬皮病原发生中的作用.
- 为了确定LS皮肤中涉及的特定内皮细胞群和分子通路.
主要方法:
- 皮肤细胞的单细胞RNA测序 (scRNA-seq) 来自27名LS患者和17名健康对照.
- 分析的重点是识别和表征内皮细胞子集群.
- 在的相互作用分析,以预测纤维化和表皮变化所涉及的信号通路.
主要成果:
- 在LS和对照样本中确定了八个不同的内皮细胞子集群.
- 患病的ECs通过SELE-FGFBP1相互作用显示了预测促进纤维化的信号.
- 动脉和毛细血管EC中JAG和NOTCH通路的升调,分别表明在表皮异常中发挥了作用.
结论:
- scRNA-seq确定了驱动LS病变的特定内皮细胞群.
- 针对已识别的EC途径,可能为局部性硬化皮肤病提供新的治疗策略.
- 内皮细胞是LS中观察到的纤维和表皮变化的关键参与者.
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