原基质调节胰腺小岛的生存和功能
Yingying Zhu1, Mei Yang1, Wanli Xu1
1Traditional Chinese Medical college, Shandong University of Traditional Chinese Medicine, Jinan, 250300, Shandong, China.
Endocrine
|November 24, 2023
概括
胰腺细胞外基质中的原蛋白影响β细胞功能和免疫反应. 向原沉积可能为1型糖尿病,纤维化和癌症提供新的治疗方法.
科学领域:
- 生物化学 生化学
- 细胞生物学 细胞生物学
- 免疫学 免疫学 免疫学
背景情况:
- 细胞外基质 (ECM) 对于胰腺细胞功能至关重要.
- 原蛋白是调节胰腺细胞行为和免疫相互作用的关键ECM成分.
- 功能障碍的原沉积与1型糖尿病,纤维化和胰腺癌有关.
研究的目的:
- 审查脏健康和疾病中的原蛋白的多方面的作用.
- 探索原蛋白对β细胞功能,免疫反应和小岛移植的影响.
- 为了确定与原相关的胰腺病理的潜在治疗点.
主要方法:
- 对原蛋白,ECM,胰腺细胞和相关疾病的研究进行文献综述.
- 对原蛋白与生长因子和机械传感器 (如YAP/TAZ) 的相互作用进行分析.
- 检查原蛋白在1型糖尿病病原和小岛移植中的作用.
主要成果:
- 特定的原蛋白类型 (I,IV,V,VI) 对于胰腺细胞的增殖,生存和功能至关重要.
- 原蛋白通过增长因子结合和YAP/TAZ信号传递来调节β细胞的行为.
- 原-ECM相互作用对免疫细胞的发展和1型糖尿病的进展至关重要.
结论:
- 原蛋白起着双重作用,支持小岛功能,但在失调时也会导致纤维化和癌症.
- 向原沉积途径 (例如,Piezo,自,IL-6) 显示出治疗胰腺疾病的希望.
- 了解原蛋白的作用是促进1型糖尿病治疗和管理胰腺纤维化和癌症的关键.
相关概念视频
Glucose Homeostasis: Pancreatic Islets and Insulin Secretion
1.3K
The pancreatic islets comprising only 1%-2% of the volume are highly vascularized and innervated mini-organs. They contain five endocrine cell types, including β cells that secrete insulin, which is synthesized as a single polypeptide chain, preproinsulin, processed to proinsulin, and finally to insulin and C-peptide. This process is complex and regulated, involving the Golgi complex, the endoplasmic reticulum, and the secretory granules of the β cell.
Insulin and C-peptide are...
Insulin and C-peptide are...
1.3K
Type IV Collagen of Basal Lamina
2.2K
Type IV collagen is a 400 nm long, network-forming collagen that acts as a barrier between the epithelial and endothelial cells. Type IV collagen forms the backbone of the basement membrane by scaffolding with laminin, entactin, proteoglycans, and fibronectin. Apart from rendering structural support to the basement membrane, it also helps entail signaling potentials necessary for both pathological and physiological functions.
A type IV collagen molecule has six alpha chains which can...
A type IV collagen molecule has six alpha chains which can...
2.2K
Extracellular Matrix
2.9K
Unlike epithelial tissue, which is composed of cells closely packed with little or no extracellular space in between, connective tissue cells are dispersed in a matrix. This extracellular matrix (ECM) is composed of fibrous proteins like collagen, elastin, and fibronectin in a ground substance consisting of interstitial fluid, cell adhesion proteins, and proteoglycans. The proteoglycans form a gel-like material in the spaces between cells and provide hydration, buffering, binding, and force...
2.9K
Cells and Secretions of the Pancreas
2.2K
The pancreas, a vital organ within the abdominal cavity, plays dual roles in the digestive and endocrine systems, collaborating with exocrine and endocrine cells to maintain optimal digestion and blood sugar levels.
Exocrine function is carried out by acinar cells, organized into clusters known as acini. These cells contribute to digestion by releasing substantial quantities of enzyme-rich, alkaline digestive juices.
Concurrently, the dispersed clusters of endocrine cells throughout the...
Exocrine function is carried out by acinar cells, organized into clusters known as acini. These cells contribute to digestion by releasing substantial quantities of enzyme-rich, alkaline digestive juices.
Concurrently, the dispersed clusters of endocrine cells throughout the...
2.2K
Role of Matrix Metalloproteases in Degradation of ECM
2.4K
Matrix metalloproteases (MMPs) are enzymes involved in the hydrolysis of proteins and glycoproteins of the extracellular matrix. MMPs are essential for the migration and proliferation of cells through the dense matrix network, throughout embryonic development, and throughout morphogenesis. The first MMP activity discovered was a collagenase in a tadpole's tail undergoing metamorphosis. The active collagen deposition and modifications lead to the morphogenesis of tadpoles into the adult...
2.4K
Structural Protein Function
27.7K
Structural proteins are a category of proteins responsible for functions ranging from cell shape and movement to providing support to major structures such as bones, cartilage, hair, and muscles. This group includes proteins such as collagen, actin, myosin, and keratin.
Collagen, the most abundant protein in mammals, is found throughout the body. In connective tissue, such as skin, ligaments, and tendons, it provides tensile strength and elasticity. In bones and teeth, it mineralizes to...
Collagen, the most abundant protein in mammals, is found throughout the body. In connective tissue, such as skin, ligaments, and tendons, it provides tensile strength and elasticity. In bones and teeth, it mineralizes to...
27.7K


