恢复的自性对PAK3诱导的心脏功能障碍有保护作用
Andrea Ruiz-Velasco1, Rida Raja1, Xinyi Chen1
1Faculty of Biology, Medicine, and Health, University of Manchester, Oxford Road, Manchester M13 9PT, UK.
iScience
|June 16, 2023
概括
心力衰竭是导致死亡的主要原因. 这项研究揭示了p21激活激酶3 (PAK3) 通过抑制自而使心力衰竭恶化,提供了一个新的治疗点.
科学领域:
- 心血管生物学 心血管生物学
- 分子心脏病学分子心脏病学
- 细胞信号传输 细胞信号传输
背景情况:
- 心力衰竭仍然是一个主要的全球健康挑战,有效治疗方法有限.
- 已确定P21激活酶3 (PAK3) 在心脏衰竭中被上调.
- 在心脏病理生理学中PAK3的确切作用尚未完全理解.
研究的目的:
- 调查PAK3在心力衰竭进展中的作用.
- 阐明PAK3影响心脏功能的分子机制.
- 探索针对心力衰竭中PAK3-自轴的治疗潜力.
主要方法:
- 在小鼠模型中,心脏特异性的PAK3过度表达.
- 评估心脏功能和病理重塑.
- 研究心肌细胞和人类样本中自调节的研究.
- 用自诱导剂进行药理干预.
主要成果:
- 心脏特异性的PAK3过度表达导致心脏功能障碍恶化,过度缩,纤维化和亡.
- 发现PAK3通过过度激活mTORC1.1,可以抑制自.
- 在体内,抑制PAK3介导的自抑制改善了心脏功能.
- 针对PAK3自途径的向证明了治疗疗效.
结论:
- 通过抑制心肌自,PAK3在促进心力衰竭进展方面发挥着关键作用.
- 通过mTORC1信号传递,PAK3充当了自的负调节者.
- 调节PAK3自轴是心力衰竭的一种有前途的治疗策略.
相关概念视频
Autophagy
4.4K
Autophagy is a self-digesting process by which a cell protects itself from threats both within and outside the cell, ranging from abnormal proteins to invading bacteria. In this process, obsolete components of the cell and invading microbes are degraded by hydrolytic enzymes active in an acidic environment of the lysosomal lumen.
An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
4.4K
Autophagic Cell Death
3.5K
Christian de Duve discovered “autophagy,” a process in which cellular components are engulfed by membrane-bound organelles called autophagosomes. The autophagosomes then fuse with lysosomes to digest the enclosed contents. Autophagy is generally activated in cells to prevent cell death. However, cell death is triggered when the damage is beyond repair.
Autophagy and Apoptosis
Autophagy can activate apoptosis. In normal conditions, the autophagy activating protein Beclin-1 and...
Autophagy and Apoptosis
Autophagy can activate apoptosis. In normal conditions, the autophagy activating protein Beclin-1 and...
3.5K
PI3K/mTOR/AKT Signaling Pathway
3.7K
The mammalian target of rapamycin (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1 (mTORC1) and mTOR complex 2 (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast, mTORC2 consists of a...
3.7K


