偶发性ALS诱导的多能干细胞衍生神经元显示TDP-43功能丧失的标志
Jeffrey D Rothstein1,2, Olivia Keeley3,4, Caroline Warlick3,4
1Brain Science Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA. jrothstein@jhmi.edu.
Nature communications
|August 2, 2025
概括
核孔损伤与ALS中的TDP-43功能障碍有关. 在患者衍生的神经元中修复这种损伤恢复了正常的基因处理,为ALS和FTD提供了潜在的治疗策略.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 是一个遗传学.
- 细胞生物学 细胞生物学
背景情况:
- TDP-43蛋白错位 (核损失,细胞质积累) 是肌缩侧面硬化症 (ALS) 和前性痴呆症 (FTD) 的一个关键特征.
- 之前对TDP-43功能障碍的研究使用了人工消耗,使其在实际患者状况中的相关性不清楚.
研究的目的:
- 为了研究患者衍生神经元中TDP-43功能丧失的分子特征.
- 验证诱导的多能干细胞衍生神经元 (iPSN) 作为ALS/FTD的模型.
- 探索核毛孔复合体完整性与TDP-43病理学之间的联系.
主要方法:
- 从180个人 (对照组,C9orf72 ALS/FTD,sALS) 的iPSN中20个基因中的约32,500个点生成和分析了qRT-PCR数据.
- 将iPSN的发现与同一患者的死后脑组织进行了比较.
- 在健康的iPSN中实验诱导核孔复合损伤 (减少POM121).
- 评估了sALS iPSN中核孔损伤修复的影响.
主要成果:
- 在单个iPSN系中发现了TDP-43功能丧失的可变,时间依赖的基因表达和拼接特征.
- 证实iPSN能够准确地模拟患者大脑组织中观察到的分子变化.
- 证明对核孔综合体 (NPC) 的损伤复制了TDP-43功能障碍的分子变化.
- 显示,修复sALS iPSN中的NPC损伤恢复了正常的基因处理.
结论:
- 来自患者的iPSN为研究ALS中TDP-43功能障碍提供了宝贵的资源,并准确地反映了疾病过程.
- 核孔完整性与ALS/FTD中TDP-43相关的病理直接相关.
- 准核孔修复为ALS和相关疾病提供了一个有希望的治疗途径.
更多相关视频
06:58Evaluation of LC3-II Release via Extracellular Vesicles in Relation to the Accumulation of Intracellular LC3-positive Vesicles
Published on: October 18, 2024
811
07:33Conversion of Human Induced Pluripotent Stem Cells iPSCs into Functional Spinal and Cranial Motor Neurons Using PiggyBac Vectors
Published on: May 1, 2019
11.5K
相关概念视频
01:21EPS and iPS Cells in Disease Research
2.9K
Embryonic and induced pluripotent stem cells are excellent models for disease research because of their ability to self-renew and differentiate into most cell types. Somatic cells from a patient are isolated and reprogrammed into induced pluripotent stem cells or iPSCs. These iPSCs are later differentiated into the desired cell type, which mirrors the diseased cell of the patient. In this way, disease models have been created for investigating diseases such as Down syndrome, type I diabetes,...
2.9K
01:22iPS Cell Differentiation
2.8K
The ability of induced pluripotent stem cells or iPSCs to differentiate into most body cell types has stimulated repair and regenerative medicine research over the past few decades. iPSC-derived blood cells, hepatocytes, beta islet cells, cardiomyocytes, neurons, and other cell types can repair injuries or regenerate damaged tissue in diseases such as diabetes and neurodegenerative disorders.
2.8K
01:06Induced Pluripotent Stem Cells
4.4K
Stem cells are undifferentiated cells that divide and produce different cell types. Ordinarily, cells that have differentiated into a specific cell type are terminally differentiated; however, scientists have found a way to reprogram these mature cells so that they dedifferentiate and return to an unspecialized, proliferative state. These cells are pluripotent like embryonic stem cells—able to produce all cell types—and are called induced pluripotent stem cells (iPSCs).
Somatic...
Somatic...
4.4K