相关实验视频
Updated: Sep 18, 2025

11:27
Analysis of SCAP N-glycosylation and Trafficking in Human Cells
Published on: November 8, 2016
8.9K
Trps1针对Scarb1,以调节小鼠莱迪格细胞中的胆固醇获取
Xiuli Lian1, Zihang Lin2, Weitao Hu2
1Key Laboratory of Stem Cell Engineering and Regenerative Medicine of Fujian Province University, Fujian Medical University, Fuzhou 350122, PR China; Department of Histology and Embryology, School of Basic Medical Sciences, Fujian Medical University, Fuzhou 350122, PR China.
Reproductive biology
|June 24, 2025
概括
转录抑制剂GATA结合1 (Trps1) 通过控制的合成来调节男性的生育能力. 沉默Trps1可以提高莱迪格细胞中的胆固醇代谢和的产生.
科学领域:
- 内分泌学 在内分泌学.
- 分子生物学分子生物学
- 生殖生物学 生殖生物学
背景情况:
- 男性不孕症影响大约7%的男性,低丸激素水平是一个重要的因素.
- 之前已经证明,转录抑制剂GATA结合1 (Trps1) 抑制了莱迪格细胞中的丸激素合成.
研究的目的:
- 阐明Trps1调节莱迪格细胞中丸激素合成的分子机制.
- 在莱迪格细胞中识别受Trps1影响的基因和通路.
主要方法:
- 在Trps1敲除后,RNA测序以识别差异表达基因 (DEGs).
- 基因和基因组的京都百科全书 (KEGG) 和基因本体学 (GO) 丰富分析.
- 基因沉默技术,实时PCR,西斑,ChIP-seq和CUT&Tag-qPCR用于验证发现并调查分子相互作用.
主要成果:
- 对GO的分析显示,与Trps1相关的DEG参与"胆固醇代谢".
- 沉默Trps1上调调节了类固醇生成因子-1 (Sf-1) 和拾尸体受体B类,成员1 (Scarb1) 的表达.
- 击败Sf-1或Scarb1可以逆转由Trps1缺乏引起的高和胆固醇水平.
- TRPS1通过调节Sf-1转录活性来调节Scarb1的表达,影响胆固醇水平和合成.
结论:
- 在莱迪格细胞中,Trps1在调节的合成中起着至关重要的作用.
- 该机制涉及通过Sf-1调节Scarb1表达,从而影响胆固醇代谢.
- 了解这种途径为解决与低丸激素相关的男性不孕症提供了潜在的目标.
相关概念视频
Regulation of Nuclear Protein Sorting
2.4K
Nuclear protein sorting regulates nucleus composition and gene expression, crucial for determining the fate of a eukaryotic cell. Hence, the entry and exit of molecules across the nuclear envelope is a tightly controlled process. Nuclear protein sorting can be inhibited by one of the following ways: 1) masking cargo signal sequences, 2) modifying the nuclear receptor's affinity for cargo, 3) controlling the nuclear pore size, 4) retaining the cargo during its transit to the cytosol or the...
2.4K
Membrane Asymmetry Regulating Transporters
5.0K
Enzymes like flippase, floppase, and scramblase transfer phospholipids from one layer to another in the membrane, thereby affecting membrane asymmetry.
Flippase
Eukaryotic flippases are type-IV P-type ATPases or P4-ATPases belonging to P-type ATPase family proteins that are membrane-bound pumps involved in the ATP-mediated transport of ions and molecules across the membrane. Flippases flip specific phospholipids from the outer to the inner leaflet of a membrane. All P4-ATPases have one...
Flippase
Eukaryotic flippases are type-IV P-type ATPases or P4-ATPases belonging to P-type ATPase family proteins that are membrane-bound pumps involved in the ATP-mediated transport of ions and molecules across the membrane. Flippases flip specific phospholipids from the outer to the inner leaflet of a membrane. All P4-ATPases have one...
5.0K
Cholesterol: Significance and Regulation
698
Although not a source of energy, cholesterol plays a significant role as a foundational structure for bile salts, steroid hormones, and vitamin D, as well as being a crucial component of plasma membranes. Approximately 15% of blood cholesterol is derived from our diet, with the remainder synthesized from acetyl CoA by the liver and intestines. Cholesterol is eliminated from the body through its conversion into bile salts, which are eventually discarded in the feces.
Considering cholesterol and...
Considering cholesterol and...
698
Directing Proteins to the Rough Endoplasmic Reticulum
8.4K
The organelle-specific signaling sequences direct proteins synthesized in the cytosol to their final destination like ER, mitochondria, peroxisomes, etc. Some of the proteins directed to ER are then trafficked via vesicles to other organelles within the cell or the extracellular environment through the Golgi complex. For example, the rough ER synthesizes soluble proteins for transportation to the lysosomes or secretion out of the cell. It can also synthesize transmembrane proteins that can...
8.4K
Lipid Absorption
859
Dietary triglycerides from chyme in the duodenum are mixed with bile salts produced by the liver to emulsify fats. As a result, large droplets are broken down into smaller ones, increasing the surface area for enzymatic action. Once emulsified, pancreatic lipases hydrolyze the triglycerides into free fatty acids and monoglycerides.
These breakdown products bind with bile salts and lecithin to form micelles, which quickly pass between microvilli to come in close contact with the apical...
These breakdown products bind with bile salts and lecithin to form micelles, which quickly pass between microvilli to come in close contact with the apical...
859

