BRAFV600E诱导具有特定细胞类型表型和药物反应的iPSC中LCH的关键特征
Giulio Abagnale1, Raphaela Schwentner1, Philipp Ben Soussia-Weiss1
1St. Anna Children's Cancer Research Institute, Vienna, Austria.
Blood
|December 4, 2024
概括
研究人员开发了一种新的实验室模型,用于使用具有BRAFV600E突变的干细胞进行朗格汉斯细胞囊细胞形成 (LCH). 这种模型有助于研究LCH病原体和测试针对MAPK通路的治疗方法.
科学领域:
- 血液学 血液学 血液学
- 干细胞生物学 干细胞生物学
- 神经科学是一个神经科学.
背景情况:
- 朗格汉斯细胞囊胞症 (LCH) 是一种克隆性造血性疾病.
- 严重的LCH并发症包括高炎症和神经退行.
- 患者样本的有限可用性阻碍了LCH研究.
研究的目的:
- 使用诱导多能干细胞 (iPSCs) 创建一个人体体外LCH模型.
- 调查BRAFV600E突变在LCH病原发生中的作用.
- 评估针对MAPK途径的潜在治疗策略.
主要方法:
- 产生了具有BRAFV600E突变的iPSCs.
- 分析了血液形成的分化和细胞表面标记物的表达 (CD1a,CD207).
- 使用MAPK路径抑制剂 (MAPKis) 进行了体外药物测试.
- 同培养的iPSC衍生的神经元与微状细胞模拟神经退行.
主要成果:
- BRAFV600E iPSCs表现出歪曲的骨髓单细胞分化,并产生了LCH类细胞.
- BRAFV600E突变改变了转录因子,并上调了炎症和LCH标记基因.
- MAPKis可以逆转BRAFV600E诱导的转录基因变化,而不会影响骨髓原生细胞.
- MAPKis减少了成熟的CD14+细胞,这是一个潜在的LCH细胞来源.
- 与LCH类微质诱导的神经退行症的iNeurons的共同培养.
结论:
- 基于iPSC的模型有效地概括了BRAFV600E驱动的LCH的关键方面.
- 这个模型可以作为一个平台来研究BRAFV600E在各种造血细胞中的作用.
- 该研究验证了MAPK通路抑制作为LCH和相关疾病的治疗方法.
更多相关视频
09:21Author Spotlight: Generating Neuronal Phenotypic Profiles - A Protocol to Culture and Image Human Midbrain Dopaminergic Neurons
Published on: July 7, 2023
1.4K
11:31Ex Vivo Optogenetic Interrogation of Long-Range Synaptic Transmission and Plasticity from Medial Prefrontal Cortex to Lateral Entorhinal Cortex
Published on: February 25, 2022
2.3K
相关概念视频
01:21EPS and iPS Cells in Disease Research
2.8K
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,...
2.8K
01:22iPS Cell Differentiation
2.6K
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.
2.6K