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温根TNFR通过一种非常规的机制调节FGF路径
Annalisa Letizia1, Maria Lluisa Espinàs1, Panagiotis Giannios1,2
1Department of Cells and Tissues. Institut de Biologia Molecular de Barcelona, IBMB-CSIC. Parc Científic de Barcelona, Baldiri Reixac, 10-12, 08028, Barcelona, Spain.
Nature communications
|September 21, 2023
概括
温根是一种TNFR,通过调节FGFRBreathless下游的MAPK通路来抑制气管细胞分化. 这种相互作用发生在细胞内囊泡中,表明一种新的TNFR机制.
科学领域:
- 发展生物学 发展生物学
- 细胞信号传递 细胞信号传递
- 分子生物学分子生物学
背景情况:
- 受体激活机制对于开发和药物标的识别至关重要.
- 瘤坏死因子受体 (TNFRs) 和受体氨酸激酶-纤维细胞生长因子受体 (RTK-FGFRs) 是保存的信号通路.
- 虫气管系统作为研究这些保存途径的模型.
研究的目的:
- 为了研究温根的作用,TNFR,在气管系统.
- 阐明温根调节气管末端细胞分化的分子机制.
- 了解TNFRs和RTK-FGFRs在发展背景下的相互作用.
主要方法:
- 使用Drosophila气管系统作为模型生物.
- 调查了温根与无呼吸FGFR相关的功能.
- 分析了MAPK路径下游的无呼吸.
- 检查了温根的定位和贩运.
- 在Wengen和Breathless之间评估了蛋白质复合体的形成.
主要成果:
- 确定温根作为气管末端细胞分化程序的抑制剂.
- 证明Wengen调节了MAPK通路在Breathless的下游.
- 显示Wengen功能独立于其正规配体和下游基因.
- 揭示了Wengen被内化并与Breathless在细胞内囊泡中的同位体.
- 发现温根调节了无呼吸的积累,贩运和退化.
结论:
- 温根在细胞内囊泡中与Breathless相互作用,调节其活性,抑制终端细胞分化.
- 这种相互作用代表了TNFR功能的一种非常规的机制,独立于正规配体.
- 作为一般的监管策略,TNFRs可能会使用与无关蛋白质的结合.
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