细胞内膜CD45在调节动脉样硬化中的细胞内膜转化为细胞内膜转化中的新型作用
Qianman Peng1, Kulandaisamy Arulsamy2, Yao Wei Lu1,2
1Vascular Biology Program, Boston Children's Hospital and Department of Surgery, Harvard Medical School; Boston, MA, 02115, USA.
bioRxiv : the preprint server for biology
|September 16, 2024
概括
在内皮细胞中向CD45通过抑制内皮-介质细胞过渡 (EndoMT) 来预防动脉样硬化. CD45的损失促进KLF2,抑制TGFβ信号传递,并减少动脉样硬化病变.
科学领域:
- 心血管生物学 心血管生物学
- 疾病的分子机制.
- 内皮细胞生物学 内皮细胞生物学
背景情况:
- 蛋白-氨酸-酸酶CD45主要存在于造血细胞中,但可以在内皮细胞中表达.
- 内皮细胞殖民地形成细胞 (ECFCs) 显示CD45促进体激活诱导内皮细胞-介质细胞过渡 (EndoMT) 标记基因.
- CD45在EndoMT中的作用及其在动脉样硬化中的治疗潜力仍然不清楚.
研究的目的:
- 研究CD45驱动EndoMT的分子机制.
- 评估针对动脉样硬化中的内皮CD45的治疗潜力.
- 在小鼠模型中确定内皮CD45缺乏对动脉样硬化发展的影响.
主要方法:
- 在 ApoE 缺陷的背景上生成了一种可诱导他莫西芬的内皮细胞特异性 CD45 缺陷小鼠菌株 (EC-iCD45KO).
- 给小鼠吃西方饮食以诱导动脉样硬化,并进行分子分析.
- 在缩的小鼠大动脉内皮细胞上利用单细胞RNA测序来分析分子变化.
主要成果:
- 在动脉样硬化小鼠中,内皮CD45损失抑制了EndoMT标记物和转化生长因子-β (TGFβ) 信号传递.
- 内皮CD45缺乏导致KLF2表达的增加,抑制了TGFβ信号和EndoMT.
- 患有内皮CD45缺乏的小鼠表现出动脉样硬化病变,斑块巨细胞和细胞粘附分子表达的减少.
结论:
- 内皮CD45的损失可以防止EndoMT驱动的动脉样硬化.
- 向内皮细胞CD45促进KLF2表达,并抑制TGFβ信号传递和EndoMT.
- 内皮CD45代表了动脉样硬化和EndoMT的潜在治疗标.
更多相关视频
07:05TGF-β-mediated Endothelial to Mesenchymal Transition EndMT and the Functional Assessment of EndMT Effectors using CRISPR/Cas9 Gene Editing
Published on: February 26, 2021
5.1K
08:38Author Spotlight: A Neonatal Heterotopic Rat Heart Transplantation Model for the Study of Endothelial-to-Mesenchymal Transition
Published on: July 21, 2023
1.1K
相关概念视频
Regulation of Angiogenesis and Blood Supply
2.5K
Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits. Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl...
2.5K
Mesenchymal Stem Cells
4.6K
Mesenchymal stem cells (MSCs) are adult stem cells that can differentiate into most connective tissue cell types, except for hematopoietic cells, depending upon the source of MSCs. For example, bone-marrow-derived MSCs (BM-MSCs) can differentiate into osteocytes, hepatocytes, and pancreatic and neuronal cells. MSCs can be isolated from various sources such as bone marrow, placenta, adipose tissue, teeth, and Wharton’s jelly, a gelatinous substance in the umbilical cord. The ease of their...
4.6K
