斯里克家族的SRC和BLK公司为CLDN6-Adhesion信号提供贡献
Naoki Ichikawa-Tomikawa1, Kotaro Sugimoto1, Korehito Kashiwagi1
1Department of Basic Pathology, Fukushima Medical University School of Medicine, Fukushima 960-1295, Japan.
Cells
|July 14, 2023
概括
克劳丁 (CLDNs) 在细胞粘附中激活Src家族激酶 (SFKs). 这项研究确定BLK和SRC是关键的SFK,对于CLDN6-介导的上皮分化和基因表达至关重要.
科学领域:
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
- 生物化学 生化学
背景情况:
- 细胞粘附分子 (整合素,合素,合素) 激活Src家族激酶 (SFKs).
- 关联克劳丁 (CLDN) 粘附与SFK激活的分子机制尚未完全理解.
- 在许多生理和病理过程中,SFK发挥着关键作用.
研究的目的:
- 识别参与CLDN6粘附信号的特定SFK成员.
- 为了阐明CLDN6和SFKs之间的分子相互作用.
- 确定SFK参与CLDN6-介导细胞事件的功能意义.
主要方法:
- 在表皮分化过程中对F9细胞中SFK亚型的表达分析.
- 免疫沉试验检测到CLDN6-SFK复合体的形成.
- 使用重组BLK,SRC和CLDN6C端的拉下测定.
- 淘汰细胞系 (F9:Cldn6:Blk-/-和F9:Cldn6:Src-/-) 与野生类型和F9:Cldn6细胞的表型比较.
主要成果:
- 在分化过程中,BLK和SRC高度表达,并在细胞边界与CLDN6局部化.
- BLK和SRC直接与CLDN6 (CLDN6C) 的C端细胞质域结合,这种结合方式与氨酸无关.
- BLK和SRC对于CLDN6诱导的上皮分化和视网酸受体向基因表达是必不可少的.
结论:
- 特定的SFK成员,BLK和SRC,直接与CLDN6互动.
- BLK和SRC是CLDN6驱动的上皮分化的关键调解者.
- 这些发现揭示了CLDN粘附信号的新机制,涉及选择性SFK参与.
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