Myo9b突变与树突细胞功能的改变以及对自身免疫糖尿病发病的易感性增加有关
Jing Zhang1, Yuan Zou1, Longmin Chen1,2
1Department of Respiratory and Critical Care Medicine, the Center for Biomedical Research, NHC Key Laboratory of Respiratory Diseases, Tongji Hospital Research Building, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Nature communications
|September 25, 2023
概括
在小鼠中,一种特定的基因删除通过损害树突细胞功能来预防自身免疫糖尿病. 一种相关的人类基因变异增加了1型糖尿病的风险,这表明Myosin IXb.
科学领域:
- 免疫学 免疫学 免疫学
- 遗传学 遗传学 是一个
- 内分泌学 在内分泌学.
背景情况:
- 1型糖尿病 (T1D) 涉及对胰腺小岛β细胞的自身免疫,但调节机制尚不清楚.
- NOD小鼠患上自身免疫性糖尿病,而它们的先天ALR菌株是耐药的,这表明疾病耐药性的遗传基础.
研究的目的:
- 与NOD小鼠相比,研究ALR小鼠对自身免疫糖尿病抵抗的基因和细胞机制.
- 确定Myosin IXb (Myo9b) 基因在树突细胞功能中的作用及其对T1D发展的贡献.
主要方法:
- 在NOD和ALR小鼠之间进行比较基因组分析,以确定遗传差异.
- 创建敲入模型来评估ALR Myo9b等位基对树突细胞 (DC) 的功能影响.
- 对DC迁移,T细胞原始化能力和表型/功能成熟的分析.
- 在人类T1D患者中检查MYO9B多态性及其与DC功能的关联.
主要成果:
- 与NOD小鼠相比,ALR小鼠表现出受损的DC迁移和T细胞启动能力.
- 确定了ALR Myo9b基因中的33-bp删除,这会损害DC成熟,并防止NOD小鼠的自身免疫糖尿病.
- 人类MYO9B R133Q多态性与患者T1D风险增加和DC功能增强有关.
结论:
- Myo9b基因的变化,特别是小鼠中的删除,可以损害DC功能并预防自身免疫糖尿病.
- 人类MYO9B R133Q多态性表明Myosin IXb在调节DC功能和T1D易感性方面发挥了保留作用.
- 氨酸IXb通过其对树突细胞生物学的影响,成为影响自身免疫糖尿病发病的潜在因素.
相关概念视频
Autoimmune Disorders
481
Autoimmune diseases are a group of disorders in which the body's immune system mistakenly attacks its own cells, tissues, and organs. This results from an overactive immune response against substances and tissues normally present in the body. Let's delve into the concept and mechanism of autoimmune diseases from an immune system point of view, explore different causes and examples of such diseases, and discuss potential solutions.
Concept and Mechanism of Autoimmune Diseases
The immune...
Concept and Mechanism of Autoimmune Diseases
The immune...
481
Diabetes Mellitus: Overview and Type I Subtype
2.7K
Diabetes mellitus is a chronic metabolic disorder characterized by high blood glucose levels due to inadequate insulin production, insulin resistance, or both. The condition affects millions worldwide and can significantly impact their health and quality of life.
Type 1 diabetes is an autoimmune disease in which the immune system mistakenly attacks and destroys the insulin-producing beta cells in the pancreas. As a result, the body is unable to produce sufficient insulin, and individuals with...
Type 1 diabetes is an autoimmune disease in which the immune system mistakenly attacks and destroys the insulin-producing beta cells in the pancreas. As a result, the body is unable to produce sufficient insulin, and individuals with...
2.7K
Pathophysiology of Diabetes
971
Diabetes mellitus is a chronic metabolic disorder characterized by hyperglycemia. The four categories of diabetes are type 1 diabetes, type 2 diabetes, other specific types of diabetes, and gestational diabetes.
Type 1 diabetes is characterized by autoimmune-mediated destruction of pancreatic β cells, with environmental factors potentially triggering this process in genetically susceptible individuals. Despite many not having a family history, certain genes increase susceptibility,...
Type 1 diabetes is characterized by autoimmune-mediated destruction of pancreatic β cells, with environmental factors potentially triggering this process in genetically susceptible individuals. Despite many not having a family history, certain genes increase susceptibility,...
971


