通过核逆转录酶抑制剂抑制长间隔的核元素-1,减弱了血管化
Jianshuai Ma1, Dayu He1, Mingxuan Zhang1
1Cardiology Department, the Eighth Affiliated Hospital, Joint Laboratory of Guangdong-Hong Kong-Macao Universities for Nutritional Metabolism and Precise Prevention and Control of Major Chronic Diseases, Sun Yat-sen University, Shenzhen, China.
Signal transduction and targeted therapy
|September 30, 2025
概括
长间隔的核元素1 (LINE1) 通过激活cGAS-STING通路驱动血管化. 用核逆转录酶抑制剂 (NRTIs) 抑制LINE1为血管化提供了一个有前途的治疗策略.
科学领域:
- 心血管生物学 心血管生物学
- 分子医学是分子医学.
- 基因组学就是基因组学.
背景情况:
- 血管化 (VC) 是心血管疾病死亡率的主要原因之一.
- 由于对其分子基础的不完全理解,目前对VC的治疗选择是有限的.
研究的目的:
- 阐明血管化背后的分子机制.
- 为了研究长间隔的核元素1 (LINE1) 在VC中的作用.
- 评估核类逆转录酶抑制剂 (NRTIs) 作为VC的潜在治疗策略.
主要方法:
- 对人类和小鼠化动脉LINE1表达的分析.
- 在体外研究涉及血管光滑肌细胞 (VSMC) 重编程.
- 在体内VC小鼠模型 (CKD诱导和维生素D3过载).
- RNA测序以评估信号通路的改变.
- 这是一项对1785名参与者进行的临床横截面研究.
主要成果:
- 在化动脉中,LINE1的调节显著上升.
- 在小鼠模型中,LINE1抑制或NRTI治疗阻止了VSMC骨质性重编程,并减轻了VC.
- LINE1抑制和NRTI降低了cGAS-STING信号通路和炎症反应的调节.
- 由LINE1衍生的cDNA被确定为cGAS-STING的直接激活剂.
- 临床数据显示,NRTI的使用与较低的VC发病率和严重程度有关.
结论:
- 通过激活cGAS-STING通路,LINE1在血管化中起着至关重要的作用.
- 通过抑制LINE1和下游炎症通路,NRTI有效地抑制VC.
- LINE1和NRTI代表了有前途的治疗标和治疗血管化管理的药物.
相关概念视频
Inhibition of Cdk Activity
5.5K
The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...
5.5K
Antihypertensive Drugs: Action of Calcium Channel Blockers
1.5K
Calcium ions are essential to contract smooth muscle cells in blood vessels. They enter these cells through voltage-dependent calcium channels, specifically L-type calcium channels in the cell membrane. These L-type calcium channels are integral to the excitation-contraction coupling process in smooth muscle. When a stimulus is received by smooth muscle cells, their membrane depolarizes. This alteration in membrane potential instigates the opening of L-type calcium channels. As a result,...
1.5K
Antihypertensive Drugs: Direct Renin Inhibitors
1.3K
The renin-angiotensin-aldosterone system (RAAS) is an intricate physiological pathway involving numerous enzymes and hormones, including renin, angiotensin-converting enzyme (ACE), angiotensin I and II, and aldosterone. Imbalances within this system increase the production of angiotensin II and aldosterone. Increased angiotensin II levels promote vasoconstriction and blood pressure elevation. Concurrently, higher aldosterone levels stimulate sodium and water reabsorption in the kidneys,...
1.3K
Non-LTR Retrotransposons
13.2K
As the name suggests, non-LTR retrotransposons lack the long terminal repeats characteristic of the LTR retrotransposons. Additionally, both LTR and non-LTR retrotransposons use distinct mechanisms of mobilization. Non-LTR retrotransposons are further divided into two classes - Long interspersed nuclear elements (LINEs) and short interspersed nuclear elements (SINEs), both of which occur abundantly in most mammals, including humans. Some of the active non-LTR retrotransposons in humans are L1...
13.2K
Eukaryotic Transcription Inhibitors
10.9K
Certain biochemical processes, such as embryonic development and cell growth regulation, depend on the repression of specific genes. DNA binding proteins known as eukaryotic transcription inhibitors regulate the repression of gene expression in eukaryotes. The presence of these inhibitors at the required location and time in the cell is triggered by the presence of hormones and additional signals from other cells.
Eukaryotic transcription inhibitors usually contain two distinct domains, a...
Eukaryotic transcription inhibitors usually contain two distinct domains, a...
10.9K
Antiarrhythmic Drugs: Class IV Agents as Calcium Channel Blockers
1.6K
Class IV antiarrhythmic drugs, such as verapamil and diltiazem, block calcium channels. They primarily affect the heart, slowing the conduction in calcium-dependent tissues like the SA and AV nodes. These drugs manage reentrant supraventricular tachycardia (SVT) and reduce ventricular rate in atrial flutter/fibrillation.
Verapamil, a calcium channel blocker, inhibits calcium movement across myocardial cell membranes and vascular smooth muscle. This results in the dilation of coronary and...
Verapamil, a calcium channel blocker, inhibits calcium movement across myocardial cell membranes and vascular smooth muscle. This results in the dilation of coronary and...
1.6K


