使用深度转移学习识别2型糖尿病和肥胖相关的人类β细胞
Gitanjali Roy1, Rameesha Syed1, Olivia Lazaro1
1Indiana Biosciences Research Institute, Indianapolis, United States.
eLife
|September 22, 2025
概括
研究人员使用DEGAS来识别与2型糖尿病 (T2D) 和肥胖有关的特定胰腺β细胞类型. 这种方法有助于理解T2D病原体,并通过分析β细胞中的基因表达来发现新的治疗点.
科学领域:
- 内分泌学 在内分泌学.
- 基因组学就是基因组学.
- 计算生物学 计算生物学
背景情况:
- 2型糖尿病 (T2D) 影响全球10%以上的成年人群,其特点是胰岛素的产生/反应受损和慢性高血糖症.
- 胰腺β细胞对于胰岛素的产生至关重要,但它们在T2D中的功能障碍和死亡仍然不完全理解.
- 单细胞RNA测序 (scRNA-seq) 突出了β细胞的异质性,但确定疾病关键的表型是具有挑战性的.
研究的目的:
- 在T2D中识别和优先考虑与疾病相关的特定β细胞亚群.
- 通过分析β细胞表型来了解T2D病原体.
- 在T2D中发现针对性治疗干预的新基因.
主要方法:
- 应用DEGAS,一个深度转移学习工具,将疾病关联映射到scRNA-seq数据上.
- 独立的DEGAS分析使用T2D和肥胖状态来识别不同的β细胞亚群.
- 使用CDKN1C和DLK1的免疫染对健康和T2D捐赠者的人类胰腺部分进行DEGAS预测的验证.
主要成果:
- DEGAS确定了与T2D和肥胖相关的明显的β细胞亚群.
- 发现了一个与T2D相关的单一β细胞群;与肥胖相关的细胞包括来自非糖尿病和T2D捐赠者的亚群.
- 与T2D细胞相比,与肥胖相关的非糖尿病β细胞表现出对翻译和展开蛋白质反应基因的丰富.
- 在T2Dβ细胞中增加了CDKN1C表达,而在一些T2D小岛中减少了DLK1表达,与DEGAS预测保持一致.
结论:
- 德加斯 (DEGAS) 是一种有价值的工具,可以促进对T2D和肥胖症中β细胞转录基因表型的理解.
- 这项研究区分了肥胖的非糖尿病人与瘦的T2D状态中的β细胞特征.
- 未来的研究将整合多omics数据集,以阐明复杂的多细胞相互作用驱动T2D病原体.
相关概念视频
01:36Carbohydrate Metabolism
13.8K
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...
13.8K
01:22Diabetes Mellitus: Type 2 and Gestational
4.3K
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...
4.3K
01:22Diabetes Mellitus: Overview and Type I Subtype
4.9K
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...
4.9K