在2型糖尿病中通过调节KANK1表达来引起cNPAS2诱导的β细胞功能障碍
Yan-Bin Yin1, Wei Ji2, Ying-Lan Liu3
1Department of General Surgery, The First Affiliated Hospital of Jiamusi University, Jiamusi 154000, Heilongjiang Province, China.
World journal of diabetes
|September 16, 2024
概括
在2型糖尿病 (T2DM) 中,NPAS2基因上调导致岛屿β细胞功能障碍. 向NPAS2和KANK1可能会提供新的T2DM治疗策略,可能是通过胃绕道手术.
科学领域:
- 内分泌学和新陈代谢学
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
背景情况:
- 2型糖尿病 (T2DM) 影响全球超过4亿人,其特点是胰岛素分泌受损和胰岛素抵抗.
- 了解T2DM病变的分子机制对于开发有效的干预措施至关重要.
研究的目的:
- 调查NPAS2在T2DM病原发生中的作用.
- 探索NPAS2作为T2DM的诊断标记.
- 评估在T2DM中针对NPAS2和KANK1的治疗潜力.
主要方法:
- 基因表达分析使用RT-PCR和Western blot.
- 通过接收器操作特征 (ROC) 曲线分析评估诊断标记.
- 在T2DM小鼠模型中进行细胞增殖试验 (CCK-8) 和手术干预 (Roux-en-Y胃绕道).
主要成果:
- 在T2DM岛屿β细胞中,NPAS2显著上调,与亡相关.
- 在NPAS2中,T2DM的诊断准确度很高.
- NPAS2的过度表达增加了KANK1水平;NPAS2和KANK1的抑制增强了MIN6细胞的增殖.
- 胃绕道手术减少了T2DM小鼠中的NPAS2和KANK1表达.
结论:
- 在T2DM中,NPAS2通过调节KANK1表达来诱导β细胞功能障碍.
- NPAS2代表了T2DM的潜在治疗目标.
- 胃绕道可能通过降低NPAS2和KANK1.1的调节来改善T2DM.
相关概念视频
Cell Specific Gene Expression
13.5K
Multicellular organisms contain a variety of structurally and functionally distinct cell types, but the DNA in all the cells originated from the same parent cells. The differences in the cells can be attributed to the differential gene expression. Liver cells, whose functions include detoxification of blood, production of bile to metabolize fats, and synthesis of proteins essential for metabolism, must express a specific set of genes to perform their functions. Gene expression also varies with...
13.5K
Glucose Homeostasis: Pancreatic Islets and Insulin Secretion
1.2K
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...
1.2K
Carbohydrate Metabolism
10.9K
Carbohydrates are polymers composed of molecules containing atoms of carbon, hydrogen and oxygen. One gram of carbohydrate can provide four kilo-calories of energy, which makes it the most efficient instant energy source.
Starch accounts for approximately 60% of the carbohydrates consumed by humans. Since amylase enzymes cannot function in the stomach's acidic environment, starch can only be digested in the mouth and small intestine. Simple sugars are found naturally in milk and fruits in...
Starch accounts for approximately 60% of the carbohydrates consumed by humans. Since amylase enzymes cannot function in the stomach's acidic environment, starch can only be digested in the mouth and small intestine. Simple sugars are found naturally in milk and fruits in...
10.9K
cAMP-dependent Protein Kinase Pathways
6.2K
Cyclic Adenosine Monophosphate (cAMP) is an essential second messenger that activates protein kinase A (PKA) and regulates various biological processes. A single epinephrine molecule binds to GPCR and activates several heterotrimeric G proteins, each stimulating multiple adenylyl cyclase, amplifying the signal, and synthesizing large numbers of cAMP molecules. Small changes in cAMP concentration affect PKA activity. The binding of four cAMP molecules induces a conformational change in PKA,...
6.2K
Insulin Secretory Vesicles
4.9K
Insulin secretory vesicles release insulin to stimulate blood glucose uptake and regulate carbohydrate metabolism. When the blood glucose levels increase, glucose enters the pancreatic β-islet cells through glucose transporters. Once inside, glucose is metabolized through glycolysis, the citric acid cycle, and the electron transport chain, producing ATP. This increase in ATP concentration closes ATP-sensitive potassium channels, leading to depolarization of the membrane and the opening of...
4.9K
Insulin: Biosynthesis, Chemistry, and Preparation
365
The endoplasmic reticulum (ER) of pancreatic β-cells synthesizes preproinsulin, which consists of a signal peptide, A and B chains, and a C-peptide. Preproinsulin is then cleaved and folded into proinsulin, which translocates to the Golgi apparatus for sorting and packaging into secretory granules. In these granules, enzymatic clipping generates insulin and C-peptide.
Damage or functional impairment of β-cells inhibits insulin production, leading to diabetes. Diabetes treatment...
Damage or functional impairment of β-cells inhibits insulin production, leading to diabetes. Diabetes treatment...
365


