通过Cx43酸化介导的细胞间通信抑制,PKCμ促进了角质细胞细胞迁移
Renju Pun1, Ann M Cavanaugh2, Emily Aldrich1
1Biomedical Sciences Department, School of Medicine, Creighton University, Omaha, NE 68178, USA.
iScience
|February 20, 2024
概括
蛋白激酶C mu (PKCμ) 通过控制细胞通信来调节皮肤伤口愈合. 它酸化联结素43 (Cx43) 以减少细胞间的结点,增强质细胞在愈合过程中的迁移.
科学领域:
- 细胞生物学 细胞生物学
- 皮肤病学 皮肤病学
- 生物化学 生物化学
背景情况:
- 通过间隙连接进行细胞间通信对于皮肤伤口愈合至关重要.
- 连接素43 (Cx43) 是皮肤中关键的隙间连接蛋白,在受伤后降低调节,以限制角质细胞通信.
- 蛋白激酶C mu (PKCμ) 参与调节皮肤伤口愈合,但其机制尚不清楚.
研究的目的:
- 阐明PKCμ调节伤口愈合的分子机制.
- 调查PKCμ在控制细胞间通信和细胞迁移中的作用.
- 要确定PKCμ是否与Cx43.3相互作用并对其进行修改.
主要方法:
- 使用了体外伤口愈合模型与角质细胞.
- 研究了PKCμ.通过Cx43的相互作用和酸化.
- 使用的相仿和非酸化的S368Cx43替代物.
- 使用间隙结抑制剂来评估功能结果.
主要成果:
- 在体外,PKCμ抑制细胞间通信,并增强质细胞迁移.
- 在368 (S368) 血清中,PKCμ直接与Cx43相互作用并酸化Cx43.
- 通过PKCμ对Cx43-S368的酸化导致Cx43的内部化和下调.
- PKCμ对伤口愈合和细胞迁移的调节取决于Cx43-S368酸化.
结论:
- PKCμ是皮细胞中Cx43酸化的关键调节者.
- PKCμ控制Cx43介导的细胞间通信和细胞迁移.
- 这些发现定义了PKCμ在伤口愈合期间调节角质细胞行为中的作用.
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