一个"超级RV"的单核转录组显示胰岛素和血管生成信号的增加
Diwakar Turaga1, Xiao Li2, Yi Zhao2
1Department of Pediatrics, Baylor College of Medicine, Houston, Texas, USA.
bioRxiv : the preprint server for biology
|January 10, 2024
概括
一个罕见的罕见.
科学领域:
- 心血管生物学 心血管生物学
- 遗传性心脏病研究 遗传性心脏病研究
- 分子心脏病学分子心脏病学
背景情况:
- 正常情况下,右心室 (RV) 将血液输送到肺部.
- 在某些先天性心脏病和肺高血压中,RV必须对系统压力进行,从而导致失败.
- 持续的系统性RV,称为"超级RV",是罕见的,人们对其了解甚少.
研究的目的:
- 为了研究成年人体内系统性RV的分子适应.
- 在慢性压力过载下RV改造中涉及的信号通路的识别.
主要方法:
- 从60岁的患有先天纠正的大动脉转移 (ccTGA) 患者的系统RV的单核转录组分析.
主要成果:
- 增加胰岛素样生长因子 (IGF1) 信号,心肌细胞中的IGFR1和周围细胞中的IGF1配体的升高.
- 血管内皮生长因子 (VEGF) 和心肌细胞中的Wnt9信号的升级,内皮细胞中相应的受体增加,表明血管新生增强.
- 识别可能有益的RV适应压力过载的适应.
结论:
- 在ccTGA中的系统RV表现出不同的分子信号通路,包括IGF1和血管生成通路.
- 这些通路可能代表了适应性机制,以应对右心室的慢性压力过载.
- 这项研究提供了对RV重塑先天性心脏病和肺高血压的见解.
相关概念视频
Insulin Secretory Vesicles
5.0K
Insulin secretory vesicles release insulin to stimulate blood glucose uptake and regulate carbohydrate metabolism. When the blood glucose levels increase, glucose enters the pancreatic β-islet cells through glucose transporters. Once inside, glucose is metabolized through glycolysis, the citric acid cycle, and the electron transport chain, producing ATP. This increase in ATP concentration closes ATP-sensitive potassium channels, leading to depolarization of the membrane and the opening of...
5.0K
mTOR Signaling and Cancer Progression
3.8K
The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
The mTOR pathway or the...
3.8K


