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将上升胸前大动脉的单细胞转录组映射到衰老期间机械感知和机械适应的变化

Cristobal F Rivera^1,2, Yasmeen M Farra³, Michele Silvestro^1,2

¹Department of Surgery, Division of Vascular and Endovascular Surgery, New York University Langone Medical Center, New York, New York, USA.

|June 3, 2024

概括

衰老导致上升的胸前大动脉 (ATA) 由于增加的原和免疫细胞透而变硬. 这种免疫机械衰老使大动脉为疾病发展做好了准备.

科学领域:

心血管生物学心血管生物学
衰老的研究研究.
免疫学免疫学免疫学

背景情况:

大动脉硬化是衰老的标志,影响心血管健康.
驱动不同大动脉区域与年龄相关的变化的具体机制尚未完全理解.

研究的目的:

为了研究衰老的大动脉中特定区域的机械分子变化.
识别老年上升胸前大动脉 (ATA) 中的细胞和分子变化.

主要方法:

对年轻和年长的人类大动脉组织进行比较分析.
单细胞RNA测序 (scRNA-seq) 的老年ATA.
评估被动循环延展性和原蛋白含量.

主要成果:

与远端段相比,上升的胸前大动脉 (ATA) 在中间层和前端层显示出更大的硬化和增加的原.
在老年ATA中,scRNA-seq揭示了细胞衰老,炎症,T淋巴细胞丰富和血管光滑肌肉细胞稀缺.
激活的机械敏感Piezo-1通道有助于血管收缩和功能衰退.

结论:

衰老会诱导ATA中的免疫机械变化,导致硬度增加.
这些变化创造了一个促炎性环境,可能会为主动脉带来疾病.

关键词:

皮埃佐-1-1 的情况.原体重塑的重新塑造延伸性延伸性延伸性弹性能量是弹性的能量.这是一种炎症炎症炎症炎症.组织硬,组织硬.这是一种血管收缩.

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