AMPK激活合 SENP1-Sirt3轴可以防止急性损伤
Minyan Zhu1, Jianli He2, Yao Xu1
1Department of Nephrology, Molecular Cell Lab for Kidney Disease, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 201207, China.
概括
向SENP1-Sirt3通路可以防止急性损伤 (AKI) 和随后的纤维化. 激活这个轴可以减少线粒体损伤和炎症,为病提供潜在的治疗策略.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 线粒体生物学 线粒体生物学
- 分子信号传输的方法
背景情况:
- 急性损伤 (AKI) 是一个重要的临床问题,导致纤维化,治疗有限.
- 靠近管状上皮细胞 (PTEC) 中的线粒体功能障碍在AKI病变发生过程中起着至关重要的作用.
- 在AKI中SENP1-Sirt3信号通路的作用需要进一步研究.
研究的目的:
- 研究SENP1-Sirt3信号通路在AKI中的作用.
- 探索这种途径与PTECs中的线粒体功能障碍之间的相关性.
- 为了确定AKI诱导的纤维化潜在的治疗点.
主要方法:
- 使用叶酸 (FA) 和缺血-再输液诱导 (IRI) AKI小鼠模型.
- 研究了Sirt3 SUMOylation位点突变 (Sirt3 KR) 和药理学刺激 (甲胺,NAC,MitoQ).
- 进行了代谢学分析,并评估了线粒体功能,氧化应激和亡标志物.
主要成果:
- 通过Sirt3 KR突变或甲福林治疗,可以预防AKI,炎症和纤维化.
- 这些干预措施减少了SOD2的线粒体乙化,减少了线粒体活性氧物种 (mtROS),并恢复了ATP水平.
- 甲胺激活了AMPK通路,促进了SENP1-Sirt3轴和保护PTECs.
结论:
- 通过AMPK通路增强Sirt3的线粒体脱SUMOylation,可以防止AKI.
- Sirt3-SOD2-mtROS轴是缓解炎和纤维化的关键媒介.
- 针对SENP1-Sirt3途径为AKI提供了一个有前途的治疗策略.
关键词:
在SENP1-Sirt3中.急性脏损伤急性脏损伤是什么脱SUMOylation 脱SUMOylation 脱SUMOylation 脱SUMOylation 脱SUMOylation 脱SUMOylation 脱SUMOylation 脱SUMOylation 脱SUMOylation 脱SUMOylation 脱SUMOylation 脱SUMOylation 脱SUMOylation 脱SUMOylation脱乙化脱乙化这是线粒体的线粒体.靠近的管道 靠近的管道更多相关视频
相关概念视频
Acute Kidney Injury II: Pathophysiology
28
Acute kidney injury (AKI) causes are categorized into three primary categories based on the location of the injury: prerenal, intrarenal (or intrinsic), and postrenal causes. This classification guides clinical management and illustrates how different pathways can impair kidney function.Etiology and Pathophysiology of Acute Kidney Injury1. Prerenal causesEtiology: Prerenal Acute Kidney Injury, the most common type, occurs when reduced blood flow to the kidneys decreases filtration capacity...
28
Acute Kidney Injury IV: Diagnostic Studies and Prevention
34
Accurate diagnosis and effective prevention are critical in managing Acute Kidney Injury (AKI), which is linked to high mortality rates ranging from 10% to 80%. Timely recognition of at-risk patients and careful monitoring can significantly reduce the likelihood of kidney damage.Diagnostic Assessments:The diagnostic process starts with a comprehensive medical history to identify prerenal, intrarenal, and postrenal causes.Prerenal causes, such as dehydration, hypotension, or blood loss, should...
34
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
Acute Kidney Injury I: Introduction
28
Introduction:Acute Kidney Injury (AKI) describes a swift decrease in kidney function occurring over hours to days, characterized by the kidneys' failure to remove waste products from the bloodstream. This leads to dangerous complications like metabolic acidosis, fluid overload, and electrolyte imbalances, such as hyperkalemia, which can cause life-threatening arrhythmias. AKI is common in both hospital and outpatient settings, often triggered by dehydration, sepsis, or exposure to nephrotoxic...
28
cAMP-dependent Protein Kinase Pathways
6.4K
Cyclic Adenosine Monophosphate (cAMP) is an essential second messenger that activates protein kinase A (PKA) and regulates various biological processes. A single epinephrine molecule binds to GPCR and activates several heterotrimeric G proteins, each stimulating multiple adenylyl cyclase, amplifying the signal, and synthesizing large numbers of cAMP molecules. Small changes in cAMP concentration affect PKA activity. The binding of four cAMP molecules induces a conformational change in PKA,...
6.4K
Acute Kidney Injury V: Interprofessional Care
25
Acute Kidney Injury (AKI) requires a collaborative healthcare approach to restore renal function and prevent complications. Essential management strategies involve monitoring fluid and electrolyte balance, adjusting medications, initiating dialysis when necessary, and providing nutritional support.Fluid and Electrolyte ManagementFluid Monitoring: Regularly monitoring body weight, central venous pressure, and urine output helps detect fluid imbalances early. Patient intake and output are...
25


