Klf6通过激活Acsl4介导的铁灭症来加剧心肌缺血/再输损伤
Ma-Li Qiu1, Wei Yan2, Mo-Mu Liu1
1Attending of Cardiovascular Surgery ICU at the Second Xiangya Hospital of Hunan Province, Changsha, Hunan Province, China.
The Kaohsiung journal of medical sciences
|August 2, 2023
概括
克鲁佩尔类因子6 (Klf6) 通过促进铁亡,加剧心肌缺血/反 (I/R) 损伤. 针对m6A修饰的Klf6和Acsl4为I/R损伤提供了一个潜在的治疗策略.
科学领域:
- 心血管生物学 心血管生物学
- 疾病的分子机制.
- 细胞应激反应的应激反应
背景情况:
- 铁亡是心肌缺血/再生 (I/R) 损伤的关键因素.
- 众所周知,克鲁佩尔类因子6 (Klf6) 会恶化脏I/R损伤,但其在心脏I/R损伤中的作用尚不清楚.
研究的目的:
- 调查Klf6在心肌I/R损伤中的作用.
- 阐明潜在的分子机制,包括m6A修饰和铁化.
主要方法:
- 已建立的心肌I/R小鼠模型和低氧/低氧化 (H/R) 处理的HL-1细胞.
- 评估铁亡标志物 (Fe2+,MDA,脂质ROS) 和心肌损伤指标 (心脏梗塞大小,心脏功能).
- 利用分子生物学技术,包括MeRIP,RNA免疫沉和露西法酶记者测试来分析Klf6调节及其与Mettl3,Igf2bp2和Acsl4.4的相互作用.
主要成果:
- 在H/R治疗的细胞和I/R治疗的心脏组织中,Klf6表达和m6A修饰被上调.
- 梅特尔3和Igf2bp2影响了Klf6水平和mRNA稳定性.
- Klf6 knockdown 减少了细胞死亡,改善了心脏功能,并抑制了铁亡.
- Klf6直接上调了Acsl4的表达,这对诱导铁亡至关重要.
结论:
- m6A修饰调节的Klf6通过激活Acsl4介导的铁亡,加剧心肌的I/R损伤.
- 准Klf6-Acsl4通路为心肌I/R损伤提供了潜在的治疗途径.
相关概念视频
01:16Necrosis
4.6K
Necrosis is considered as an “accidental” or unexpected form of cell death that ends in cell lysis. The first noticeable mention of “necrosis” was in 1859 when Rudolf Virchow used this term to describe advanced tissue breakdown in his compilation titled “Cell Pathology”.
Morphological Manifestations of Necrosis
Necrotic cells show different types of morphological appearance depending on the type of tissue and infection. In coagulative necrosis, cells become...
Morphological Manifestations of Necrosis
Necrotic cells show different types of morphological appearance depending on the type of tissue and infection. In coagulative necrosis, cells become...
4.6K
01:30Acute Coronary Syndrome I: Introduction
30
Acute Coronary Syndrome (ACS) encompasses a spectrum of heart conditions caused by sudden obstruction of coronary arteries, typically resulting from the rupture of an atherosclerotic plaque and subsequent thrombus (blood clot) formation. This obstruction can lead to partial or complete blockage of blood flow, causing varying degrees of myocardial ischemia or infarction.ACS includes the following clinical entities:Unstable Angina (UA)Non-ST-Elevation Myocardial Infarction (NSTEMI)ST-Elevation...
30