{"title":"脱粘体上的 IP3 受体-KRAP 复合物:凋亡过程中的新角色","authors":"Jan B. Parys","doi":"10.1016/j.ceca.2024.102963","DOIUrl":null,"url":null,"abstract":"<div><div>The IP<sub>3</sub> receptor (IP<sub>3</sub>R) is a ubiquitously expressed Ca<sup>2+</sup>-release channel located in the endoplasmic reticulum (ER). Ca<sup>2+</sup> signals originating from the IP<sub>3</sub>R initiate or regulate a plethora of cellular events, including cell life and death processes, e.g. exaggerated Ca<sup>2+</sup> release from the ER to the mitochondria is a trigger for apoptosis. Recently, Cho et al. (Current Biology, 2024, DOI: 10.1016/j.cub.2024.08.057) demonstrated that in epithelial monolayers a sustained [Ca<sup>2+</sup>] elevation caused by the IP<sub>3</sub>Rs is responsible for the extrusion of adjacent apoptotic cells out of the epithelial monolayer. Interestingly, the IP<sub>3</sub>Rs involved are associated with the desmosomes via K-Ras-induced actin-interacting protein (KRAP). This study not only highlight a novel role of the IP<sub>3</sub>R in apoptosis, but also shed a new light on how KRAP -and by extension KRAP-related proteins- contribute to the regulation of IP<sub>3</sub>R activity and, more broadly, underscores the crucial role of associated proteins in determining the function of IP<sub>3</sub>Rs.</div></div>","PeriodicalId":9678,"journal":{"name":"Cell calcium","volume":null,"pages":null},"PeriodicalIF":4.3000,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The IP3 receptor-KRAP complex at the desmosomes: A new player in the apoptotic process\",\"authors\":\"Jan B. Parys\",\"doi\":\"10.1016/j.ceca.2024.102963\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The IP<sub>3</sub> receptor (IP<sub>3</sub>R) is a ubiquitously expressed Ca<sup>2+</sup>-release channel located in the endoplasmic reticulum (ER). Ca<sup>2+</sup> signals originating from the IP<sub>3</sub>R initiate or regulate a plethora of cellular events, including cell life and death processes, e.g. exaggerated Ca<sup>2+</sup> release from the ER to the mitochondria is a trigger for apoptosis. Recently, Cho et al. (Current Biology, 2024, DOI: 10.1016/j.cub.2024.08.057) demonstrated that in epithelial monolayers a sustained [Ca<sup>2+</sup>] elevation caused by the IP<sub>3</sub>Rs is responsible for the extrusion of adjacent apoptotic cells out of the epithelial monolayer. Interestingly, the IP<sub>3</sub>Rs involved are associated with the desmosomes via K-Ras-induced actin-interacting protein (KRAP). This study not only highlight a novel role of the IP<sub>3</sub>R in apoptosis, but also shed a new light on how KRAP -and by extension KRAP-related proteins- contribute to the regulation of IP<sub>3</sub>R activity and, more broadly, underscores the crucial role of associated proteins in determining the function of IP<sub>3</sub>Rs.</div></div>\",\"PeriodicalId\":9678,\"journal\":{\"name\":\"Cell calcium\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.3000,\"publicationDate\":\"2024-10-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Cell calcium\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0143416024001210\",\"RegionNum\":2,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CELL BIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Cell calcium","FirstCategoryId":"99","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0143416024001210","RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CELL BIOLOGY","Score":null,"Total":0}
The IP3 receptor-KRAP complex at the desmosomes: A new player in the apoptotic process
The IP3 receptor (IP3R) is a ubiquitously expressed Ca2+-release channel located in the endoplasmic reticulum (ER). Ca2+ signals originating from the IP3R initiate or regulate a plethora of cellular events, including cell life and death processes, e.g. exaggerated Ca2+ release from the ER to the mitochondria is a trigger for apoptosis. Recently, Cho et al. (Current Biology, 2024, DOI: 10.1016/j.cub.2024.08.057) demonstrated that in epithelial monolayers a sustained [Ca2+] elevation caused by the IP3Rs is responsible for the extrusion of adjacent apoptotic cells out of the epithelial monolayer. Interestingly, the IP3Rs involved are associated with the desmosomes via K-Ras-induced actin-interacting protein (KRAP). This study not only highlight a novel role of the IP3R in apoptosis, but also shed a new light on how KRAP -and by extension KRAP-related proteins- contribute to the regulation of IP3R activity and, more broadly, underscores the crucial role of associated proteins in determining the function of IP3Rs.
期刊介绍:
Cell Calcium covers the field of calcium metabolism and signalling in living systems, from aspects including inorganic chemistry, physiology, molecular biology and pathology. Topic themes include:
Roles of calcium in regulating cellular events such as apoptosis, necrosis and organelle remodelling
Influence of calcium regulation in affecting health and disease outcomes