改变的B细胞代谢途径标志着1型糖尿病的进展
Holly Conway1,2, Jessica Bernard1,2, Rachel Ramos1,2
1Department of Pediatrics, Division of Pediatric Endocrinology, Indiana University School of Medicine, Indianapolis, IN, United States.
Journal of immunology (Baltimore, Md. : 1950)
|December 27, 2025
概括
调控性B细胞 (Bregs) 对于预防1型糖尿病 (T1D) 至关重要. 在这项研究中,NOD小鼠B细胞显示代谢发生变化,HIF-1α减少,影响IL-10的产生和免疫耐受性.
科学领域:
- 免疫学 免疫学 免疫学
- 代谢途径 代谢途径
- 自身免疫性疾病是一种自身免疫性疾病.
背景情况:
- 1型糖尿病 (T1D) 涉及胰腺β细胞的免疫媒介破坏,B细胞作为抗原呈现体和调节体发挥双重作用.
- 产生IL-10的调节性B细胞 (Bregs) 在自身免疫中具有保护作用,但它们的功能在T1D中受损.
- 缺氧诱导因子1α (HIF-1α) 信号通过糖解促进Breg扩张,但其在T1D B细胞中的作用尚不清楚.
研究的目的:
- 研究B细胞分化,新陈代谢和HIF-1α信号在自身免疫糖尿病中的相互作用.
- 为了确定T1D中布雷格功能受损是否由于内在B细胞缺陷或微环境因素.
- 阐明B细胞中介抑制糖尿病中致病性T细胞的机制.
主要方法:
- 在非肥胖糖尿病小鼠和非自身免疫B6小鼠之间对B细胞代谢和功能的比较分析.
- 评估B细胞中的葡萄糖吸收,IL-10表达和HIF-1α信号通路.
- 对依赖HIF-1α的基因诱导和糖溶性流量的评估.
主要成果:
- 与B6小鼠相比,来自NOD小鼠的B细胞表现出较高的葡萄糖吸收和IL-10产生.
- 尽管IL-10升高,但NOD B细胞显示HIF-1α水平降低和HIF-1α依赖基因表达减弱.
- 这些发现表明,HIF-1α在NOD B细胞中调节IL-10产生的作用减弱,而单独的IL-10对免疫耐受性是不够的.
结论:
- 在自身免疫糖尿病进展过程中,B细胞代谢被动态重塑.
- 遗传和微环境因素在T1D中重新编程B细胞代谢和功能.
- 针对T1D的治疗策略应考虑IL-10独立途径和B细胞外部机制的免疫调节.
相关概念视频
Pathophysiology of Diabetes
3.1K
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,...
3.1K
Diabetes Mellitus: Overview and Type I Subtype
4.8K
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...
4.8K
Carbohydrate Metabolism
13.7K
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...
13.7K
Diabetes Mellitus: Type 2 and Gestational
4.2K
Type 2 diabetes, characterized by insulin resistance, arises when the insulin receptors on cells lose responsiveness to insulin, diminishing the cell's capacity to take up glucose, resulting in elevated blood glucose levels. To receive a diagnosis of Type 2 diabetes, a series of blood glucose tests are necessary to assess whether the blood glucose falls within normal parameters. If the result is out of the normal range, a patient may be diagnosed as prediabetic or diabetic, depending on the...
4.2K
Diabetes: Symptoms, Diagnosis, and Complications
2.0K
For most patients, experiencing several weeks of polyuria, polydipsia, fatigue, and significant weight loss may indicate the presence of diabetes. Furthermore, adults displaying the phenotypic appearance of type 2 diabetes (particularly those who are obese and not initially insulin-requiring), may have islet cell autoantibodies, suggesting autoimmune-mediated β cell destruction and a diagnosis of latent autoimmune diabetes of adults (LADA). The categorization of glucose homeostasis is...
2.0K
Psychoneuroimmunology: Diabetes and Cancer
404
Chronic stress has been linked to both the onset and progression of serious health conditions, including Type 2 diabetes and cancer. Type 2 diabetes, a widespread chronic illness, is closely associated with obesity and insulin resistance, both of which often worsen under stress. Studies indicate that men experiencing high levels of chronic stress face a 45% higher risk of developing diabetes compared to those with minimal stress. Stress triggers physiological responses that elevate blood...
404


