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Cx43可以在核外形成功能通道,并在心脏细胞中调节基因表达

Tania Martins-Marques^1,2,3, Katja Witschas⁴, Ilda Ribeiro^1,2,5

¹Univ Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, 3000-548 Coimbra, Portugal.

|October 31, 2023

概括

连接素43 (Cx43) 移动到核中,调节基因表达并形成核通道. 这一发现揭示了Cx43在细胞过程和心脏状况中的新角色.

科学领域:

细胞生物学细胞生物学
分子生物学分子生物学
生物物理学的生物物理.

背景情况:

众所周知,Connexin43 (Cx43) 是用于差距连接通信的.
新出现的证据表明,Cx43具有非正规的功能,包括基因调节.
Cx43的核作用和机制在很大程度上仍未被探索.

研究的目的:

为了研究Cx43.3的核定位和功能.
阐明Cx43核转位的机制及其对转录的影响.
探索Cx43在核通道形成和核细胞质运输中的作用.

主要方法:

生物化学测定生物化学测定
超高分辨率显微镜的使用方法
免疫黄金传输电子显微镜
进口蛋白β抑制研究
补丁灯的录音记录.
对转录组进行分析.

主要成果:

在各种细胞类型和心脏组织中,Cx43定位在核外中.
Cx43 核进口是通过Importin-β进行的.
在核外上,Cx43形成了功能通道,促进了核细胞质的穿.
核Cx43影响细胞转录组,可能通过与转录因子相互作用.
核Cx43在心肌细胞分化过程中积聚,这表明它在基因调制中发挥了作用.

结论:

Cx43具有超越细胞间通信的核功能.
进口in-β介于Cx43的核进口.
核外中的Cx43通道使核细胞质运输成为可能.
核Cx43在基因表达调节和细胞分化中发挥作用,对心脏病理生理学有影响.

关键词:

连接器43 连接器43 基因表达的基因表达方式核转移的转移是核转移的转移.亚细胞贩运活动

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