加塔3在蛋白细胞认同中的作用
Jesus S Neyra1, Silvia Medrano1, Alexandre De Goes Martini1
1Department of Pediatrics, Child Health Research Center, University of Virginia School of Medicine, Charlottesville, Virginia, United States.
American journal of physiology. Renal physiology
|June 22, 2023
概括
转录因子Gata3对于保持脏蛋白细胞的身份和位置至关重要. 这些细胞中Gata3的条件删除导致脏结构和功能异常.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 分子生物学分子生物学
- 发展生物学 发展生物学
背景情况:
- 蛋白细胞是具有高可塑性的关键前体.
- 转录因子Gata3在正常和压力条件下在蛋白细胞中表达.
- 雷宁基因上游的一个潜在的 Gata3 结合部位表明了 Gata3 在雷宁细胞识别中的作用.
研究的目的:
- 研究Gata3在维持蛋白细胞身份和功能方面的重要作用.
- 确定Gata3删除在宁系细胞中对脏结构和生理学的后果.
主要方法:
- 在小鼠蛋白细胞 (Gata3-cKO) 中,Gata3的条件删除.
- 针对Gata3,renin和actin-α2.2进行免疫化.
- 使用血素-氨酸,PAS和马森三色染色的组织学分析.
- 测量血液中尿素的含量.
主要成果:
- Gata3 删除显著降低了雷宁系细胞中的 Gata3 表达.
- 加塔3-cKO小鼠的血尿含量增加,表明功能受损.
- Gata3-cKO小鼠中的雷宁细胞很薄,异位局部化,并表现出异常的actin-α2表达.
- 组织学揭示了淋巴细胞融合,没有曼囊上皮细胞,动脉瘤和管状扩张.
结论:
- Gata3对于脏蛋白细胞的身份,定位和正常形态至关重要.
- 失去Gata3会破坏细胞的功能,并导致严重的脏异常.
- 这项研究为理解细胞命运和病理的转录因子控制提供了一个新的模型.
相关概念视频
01:28Glomerular Filtration Rate and its Regulation
3.0K
The Glomerular Filtration Rate (GFR) is a measure of kidney function, reflecting the volume of filtrate formed per minute in the kidneys. On average, GFR is approximately 125 mL/min in males and 105 mL/min in females. Maintaining a relatively constant GFR is essential for the kidneys to effectively regulate body fluid homeostasis and maintain extracellular stability.
GFR regulation involves two primary intrinsic controls: the myogenic and tubuloglomerular feedback mechanisms.
The myogenic...
GFR regulation involves two primary intrinsic controls: the myogenic and tubuloglomerular feedback mechanisms.
The myogenic...
3.0K
01:20Renal Corpuscle
2.9K
The glomerulus and Bowman's capsule are two essential components of the nephron, which is the functional unit of the kidney. These microscopic structures play a critical role in the process of blood filtration to produce urine.
Glomerulus: Structure and Function
The glomerulus is a tiny, intricate network of capillaries located at the beginning of the nephron. It's enveloped by the Bowman's capsule and receives its blood supply from an afferent arteriole, which divides into numerous...
Glomerulus: Structure and Function
The glomerulus is a tiny, intricate network of capillaries located at the beginning of the nephron. It's enveloped by the Bowman's capsule and receives its blood supply from an afferent arteriole, which divides into numerous...
2.9K
01:24Small GTPases - Ras and Rho
4.0K
Ras and Rho are small monomeric GTPases that act downstream of receptor tyrosine kinase (RTK) and regulate various cellular processes. These GTPases switch between active and inactive states by binding to guanine nucleotides.
Three regulatory proteins control their activity:
Three regulatory proteins control their activity:
4.0K
01:25Antihypertensive Drugs: Direct Renin Inhibitors
704
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,...
704
01:24Renal Tubule and Collecting Duct
1.1K
The renal tubule is divided into three parts: the proximal convoluted tubule (PCT), the Loop of Henle (LOH), and the distal convoluted tubule (DCT).
Proximal Convoluted Tubule (PCT):
The PCT is the initial segment of the renal tubule, extending from the Bowman's capsule that encloses the glomerulus. Its convoluted structure and microvilli-lined cells increase the surface area for reabsorption. The PCT reabsorbs glucose, amino acids, sodium, and water from the filtrate, ensuring essential...
Proximal Convoluted Tubule (PCT):
The PCT is the initial segment of the renal tubule, extending from the Bowman's capsule that encloses the glomerulus. Its convoluted structure and microvilli-lined cells increase the surface area for reabsorption. The PCT reabsorbs glucose, amino acids, sodium, and water from the filtrate, ensuring essential...
1.1K
01:23Catenins
2.3K
Catenins are characterized by multiple binding domains and dynamic structures that allow them to function as linker proteins in cell junction complexes. All catenins, except α-catenin, contain a characteristic protein sequence called the armadillo repeat and are therefore also called armadillo proteins.
Catenins in Cell Junctions
Catenins bind to cell adhesion molecules such as cadherins and link them to different cytoskeletal proteins depending on the type of cell junction. At the...
Catenins in Cell Junctions
Catenins bind to cell adhesion molecules such as cadherins and link them to different cytoskeletal proteins depending on the type of cell junction. At the...
2.3K