二倍性肝细胞通过抑制的JNK信号传递抵抗亚美诺诱导的肝损伤
Sierra R Wilson1,2,3, Evan R Delgado4, Frances Alencastro1,2,3
1Department of Pathology, University of Pittsburgh School of Medicine, University of Pittsburgh, Pittsburgh, PA, USA.
Cell death & disease
|February 3, 2026
概括
二倍性肝细胞保护肝脏免受乙氨基损伤. 有更多双胞胎细胞的小鼠表现出更好的生存率和减少肝损伤,突出显示了双胞胎细胞的多样性.
科学领域:
- 肝病学 肝病学是一种肝病学.
- 细胞生物学 细胞生物学
- 再生医学是一种再生医学.
背景情况:
- 肝脏包括双倍体和多倍体肝细胞,功能区别不清楚.
- 人们越来越认识到肝细胞性在受伤后肝脏再生中的作用.
研究的目的:
- 调查二倍性肝细胞在乙氨基 (APAP) 诱导的肝损伤后肝脏愈合中的特定作用.
- 为了确定是否增加的二倍体性会对APAP诱导的肝毒性产生抗性.
主要方法:
- 使用终身肝脏特异性的E2f7/E2f8淘汰赛 (LKO) 小鼠,富含双胞胎肝细胞和成年肝细胞淘汰赛 (HKO) 模型.
- 用APAP对控制,LKO和HKO小鼠进行治疗,在96小时内评估损伤标志物 (血清酶,亡,DNA碎片化).
- 进行了转录基因和蛋白质分析,重点关注JNK激活和线粒体损伤途径.
主要成果:
- 与对照小鼠相比,LKO小鼠在APAP治疗后的生存率提高,肝酶降低,缩和DNA碎片化减少.
- HKO小鼠,缺乏改变的平流体,没有显示任何保护,表明二平流体,而不是基因删除,介导抵抗.
- 在野生型肝细胞中,APAP治疗诱导了转向较低性的转变,而LKO肝脏显示了减少的JNK激活和线粒体损伤.
结论:
- 肝细胞是影响肝脏对损伤反应的关键因素.
- 二倍体肝细胞在肝脏的恢复和再生中起着保护作用,特别是在APAP引起的损伤后.
- 针对或促进双倍体质可能为肝脏疾病提供治疗策略.
更多相关视频
10:42Development of an Ethanol-induced Fibrotic Liver Model in Zebrafish to Study Progenitor Cell-mediated Hepatocyte Regeneration
Published on: May 13, 2016
9.6K
13:09Rat Liver Perfusion and Primary Hepatocytes Isolation: An Old Procedure Crucial for Cutting-Edge 3D Organoids Culture
Published on: November 22, 2024
2.2K
相关概念视频
Yeast Signaling
17.3K
Yeasts are single-celled organisms, but unlike bacteria, they are eukaryotes (cells with a nucleus). Cell signaling in yeast is similar to signaling in other eukaryotic cells. A ligand, such as a protein or a small molecule released from a yeast cell, attaches to a receptor on the cell surface. The binding stimulates second-messenger kinases to activate or inactivate transcription factors that further regulate gene expression. Many of the yeast intracellular signaling cascades have similar...
17.3K
Bacterial Signaling
40.8K
Bacterial signaling can occur within bacteria (intracellular) or between bacteria (intercellular). At times, a group of bacteria behaves like a community. To achieve this, they engage in quorum sensing, the perception of higher cell density that causes changes in gene expression. Quorum sensing involves both extracellular and intracellular signaling. The signaling cascade starts with a molecule called an autoinducer (AI). Individual bacteria produce AIs that move out of the bacterial cell...
40.8K
Resistivity
4.6K
When a voltage is applied to a conductor, an electrical field is generated, and charges in the conductor feel the force due to the electrical field. The current density that results depends on the electrical field and the properties of the material. In some materials, including metals at a given temperature, the current density is approximately proportional to the electrical field. In these cases, the current density can be modeled as:
4.6K
Resistance
6.0K
When a current moves through any conductor, the conductor causes some level of difficulty for the current to flow. The measure of that difficulty is known as the resistance of the material and is represented by R. Every material has its own resistance. In the case of conductors, heat is emitted whenever a current passes through them. Resistance depends on the resistivity of the material. Resistivity is a characteristic of the material used to fabricate electrical components, whereas the...
6.0K
What is Cell Signaling?
130.9K
Despite the protective membrane that separates a cell from the environment, cells need the ability to detect and respond to environmental changes. Additionally, cells often need to communicate with one another. Unicellular and multicellular organisms use a variety of cell signaling mechanisms to communicate to respond to the environment.
130.9K
Equivalent Resistance
985
In circuit analysis, situations often arise where resistors are neither in series nor parallel configurations. To tackle such scenarios, three-terminal equivalent networks like the wye (Y) (Figure 1 (a)) or tee (T) and delta (Δ) (Figure 1 (b)) or pi (π) networks come into play. These networks offer versatile solutions and are frequently encountered in various applications, including three-phase electrical systems, electrical filters, and matching networks.
985
