在LDLR循环中SNX17,Rab11和Rab5在LDLR循环中的潜在作用
Xiaofei Zhao1, Shiyin Long1, Meiqi Zhu1
1Department of Biochemistry and Molecular Biology (X.Z., S.L., M.Z., C.Z.), Hengyang Medical School, University of South China.
Arteriosclerosis, thrombosis, and vascular biology
|June 19, 2025
概括
本综述探讨了Sorting Nexin 17 (SNX17) 和Rab GTPases (Rab11,Rab5) 如何调节低密度脂蛋白受体 (LDLR) 的循环. 了解这些机制为管理胆固醇水平和心血管疾病提供了潜在的治疗点.
科学领域:
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
- 心血管研究的心血管研究.
背景情况:
- 动脉样性心血管疾病是全球主要的健康问题.
- 升高的低密度脂蛋白胆固醇 (LDL-C) 是一个关键的危险因素.
- 低密度脂蛋白受体 (LDLR) 稳态对于胆固醇清除至关重要,但人们对其了解甚少.
研究的目的:
- 审查SNX17,Rab11和Rab5在LDLR回收中的作用.
- 阐明它们在内体动力学和胆固醇代谢中的参与.
- 为了突出其治疗性潜力治疗失脂症.
主要方法:
- 对SNX蛋白和Rab GTPases的研究进行文献综述.
- 对LDLR内细胞和循环通路的数据分析.
- 综合有关调节LDLR稳态的分子机制的信息.
主要成果:
- 确定SNX17,Rab11和Rab5是LDLR循环的关键调节者.
- 这些蛋白质会影响内体组分类和囊泡运输.
- 它们的功能障碍会影响胆固醇代谢和LDLR的可用性.
结论:
- SNX17和特定的Rab GTPases对于维持LDLR功能至关重要.
- 向这些蛋白质可能为失脂症提供新的治疗策略.
- 对这些途径的进一步研究可以促进心血管疾病管理.
相关概念视频
Recycling Endosomes and Transcytosis
2.8K
The recycling endosome, also known as the endosomal recycling compartment (ERC), is a part of the slow-recycling process of the endocytic pathway. Molecules internalized through receptor-mediated endocytosis are either degraded in the lysosomes or are recycled to the plasma membrane through the fast- or slow-recycling route.
The recycling endosome is not a single organelle but an extensively tubulated network of recycling pathways. It functions in storing molecules or transporting them across...
The recycling endosome is not a single organelle but an extensively tubulated network of recycling pathways. It functions in storing molecules or transporting them across...
2.8K
Rab Cascades
2.7K
Rab GTPases act in a regulated cascade during membrane fusion, helping the lipid bilayers mix. The Rab family of proteins are active when bound to GTP, and inactive when bound to GDP. Hence, they act as guanine nucleotide-dependent molecular switches. Rab-GTP recognizes and binds to long or short-range tethering proteins to capture the target vesicle. These tethers coordinate with SNAREs on the vesicle and the target membrane to assemble the trans SNARE complex that locks the mixing bilayers.
2.7K
Rab Proteins
4.1K
Rab proteins constitute the largest family of monomeric GTPases, of which 70 members are present in humans. Rab proteins and their effectors regulate consecutive stages of vesicle transport such as vesicle transport, docking, and fusion to the correct recipient membrane.
Rab proteins switch between a cytosolic, GDP-bound inactive state and a membrane-anchored, GTP-bound active state. By themselves, Rabs show slow rates of GDP/GTP exchange and GTP hydrolysis. Thus, Rab proteins are considered...
Rab proteins switch between a cytosolic, GDP-bound inactive state and a membrane-anchored, GTP-bound active state. By themselves, Rabs show slow rates of GDP/GTP exchange and GTP hydrolysis. Thus, Rab proteins are considered...
4.1K
The Early Endosome: Endocytosis of Transferrin
3.5K
Essential proteins such as insulin or low-density lipoprotein (LDL) and micronutrients such as iron enter a eukaryotic cell through receptor-mediated endocytosis. Subsequently, the early endosomes fuse with the vesicles containing such receptor-ligand complexes and play a vital role in sorting the incoming ligands and receptors. While the ligands are either degraded inside the vesicle or released into the cytosol, their receptors are returned to the plasma membrane for further rounds of...
3.5K
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
Receptor-mediated Endocytosis
106.1K
Overview
106.1K


