PMID- 37611889 OWN - NLM STAT- MEDLINE DCOM- 20240221 LR - 20240221 IS - 1638-6183 (Electronic) IS - 0300-9084 (Linking) VI - 218 DP - 2024 Mar TI - Analysis of the function and therapeutic strategy of connexin 43 from its subcellular localization. PG - 1-7 LID - S0300-9084(23)00202-X [pii] LID - 10.1016/j.biochi.2023.08.011 [doi] AB - Connexins (Cxs) are a family of transmembrane proteins located in the plasma membrane of human cells, among which connexin 43 (Cx43) is abundantly expressed in various types of human cells. Cx43, encoded by the gap junction protein alpha 1 (GJA1) gene, assembles into a hexameric structure in the Golgi apparatus and translocates to the plasma membrane to form hemichannels (Hcs), which pair with those of the cells in contact with each other and form gap junction intercellular communication (GJIC). The role of Cx43 as a connexin localized at the plasma membrane to perform channel functions is well recognized in previous studies, but recent studies have found that it can also be localized in the nucleus, mitochondria, or present in extracellular vesicles (EVs) and tunneling nanotubes (TNTs). Cx43 in the nucleus is involved in gene transcription regulation, cytoskeleton formation, cell migration and adhesion. Cx43 in mitochondria is involved in mitochondrial respiration-related functions, and Cx43 in extracellular vesicles and tunneling nanotubes is involved in distant cellular information exchange. It is because of the diverse distribution of subcellular localization of Cx43 that it is possible to explore the corresponding functions by analyzing its localization. In this review, we summarize the important roles of Cx43 in disease development from the perspective of subcellular localization, and provide new ideas for Cx43 as a therapeutic target and the search for related pathological mechanisms. CI - Copyright (c) 2023 The Authors. Published by Elsevier B.V. All rights reserved. FAU - Xiong, Xinhai AU - Xiong X AD - The Second Affiliated Hospital of Hunan Normal University, Changsha, Hunan, 410003, China. FAU - Chen, Wenjie AU - Chen W AD - The Second Affiliated Hospital of Hunan Normal University, Changsha, Hunan, 410003, China. FAU - Chen, Cheng AU - Chen C AD - The Second Affiliated Hospital of Hunan Normal University, Changsha, Hunan, 410003, China; 926 Hospital of the People's Liberation Army, Kaiyuan, Yunnan, 661600, China. Electronic address: 202120213677@hunnu.edu.cn. FAU - Wu, Qi AU - Wu Q AD - The Second Affiliated Hospital of Hunan Normal University, Changsha, Hunan, 410003, China. FAU - He, Chaopeng AU - He C AD - The Second Xiangya Hospital, Changsha, Hunan, 410011, China. LA - eng PT - Journal Article PT - Review DEP - 20230822 PL - France TA - Biochimie JT - Biochimie JID - 1264604 RN - 0 (Connexin 43) RN - 0 (Connexins) SB - IM MH - Humans MH - *Connexin 43/genetics/metabolism MH - *Connexins/genetics/metabolism MH - Gap Junctions/metabolism MH - Cell Membrane/metabolism MH - Gene Expression Regulation MH - Cell Communication OTO - NOTNLM OT - Connexin 43 OT - Extracellular vesicles OT - Gap junctions OT - Mitochondria OT - Nucleus COIS- Declaration of competing interest The authors declare that there is no conflict of interest. EDAT- 2023/08/24 00:42 MHDA- 2024/02/21 11:16 CRDT- 2023/08/23 19:27 PHST- 2023/04/04 00:00 [received] PHST- 2023/08/07 00:00 [revised] PHST- 2023/08/18 00:00 [accepted] PHST- 2024/02/21 11:16 [medline] PHST- 2023/08/24 00:42 [pubmed] PHST- 2023/08/23 19:27 [entrez] AID - S0300-9084(23)00202-X [pii] AID - 10.1016/j.biochi.2023.08.011 [doi] PST - ppublish SO - Biochimie. 2024 Mar;218:1-7. doi: 10.1016/j.biochi.2023.08.011. Epub 2023 Aug 22.