Membrane contact sites (MCSs) between the endoplasmic reticulum (ER) and mitochondria are emerging as critical hubs for diverse cellular events, and alterations in the extent of these contacts are linked to neurodegenerative diseases. However, the mechanisms that control ER-mitochondria interactions are so far elusive. Here, we demonstrate a key role of vacuolar protein sorting-associated protein 13D (VPS13D) in the negative regulation of ER-mitochondria MCSs. VPS13D suppression results in extensive ER-mitochondria tethering, a phenotype that can be substantially rescued by suppression of the tethering proteins VAPB and PTPIP51. VPS13D interacts with valosin-containing protein (VCP/p97) to control the level of ER-resident VAPB at contacts. VPS13D is required for the stability of p97. Functionally, VPS13D suppression leads to severe defects in mitochondrial morphology, mitochondrial cellular distribution, and mitochondrial DNA synthesis. Together, our results suggest that VPS13D negatively regulates the ER-mitochondria MCSs, partially through its interactions with VCP/p97.
基金:
National Natural Science Foundation of China [91854109, 31701170, 81901166]
第一作者单位:[1]Huazhong Univ Sci & Technol, Dept Biochem & Mol Biol, Sch Basic Med, Wuhan 430030, Hubei, Peoples R China
通讯作者:
通讯机构:[1]Huazhong Univ Sci & Technol, Dept Biochem & Mol Biol, Sch Basic Med, Wuhan 430030, Hubei, Peoples R China[3]Huazhong Univ Sci & Technol, Cell Architecture Res Inst, Wuhan 430030, Hubei, Peoples R China
推荐引用方式(GB/T 7714):
Du Yuanjiao,Wang Jingru,Xiong Juan,et al.VPS13D interacts with VCP/p97 and negatively regulates endoplasmic reticulum-mitochondria interactions[J].MOLECULAR BIOLOGY OF THE CELL.2021,32(16):1474-1486.doi:10.1091/mbc.E21-03-0097.
APA:
Du, Yuanjiao,Wang, Jingru,Xiong, Juan,Fang, Na&Ji, Wei-Ke.(2021).VPS13D interacts with VCP/p97 and negatively regulates endoplasmic reticulum-mitochondria interactions.MOLECULAR BIOLOGY OF THE CELL,32,(16)
MLA:
Du, Yuanjiao,et al."VPS13D interacts with VCP/p97 and negatively regulates endoplasmic reticulum-mitochondria interactions".MOLECULAR BIOLOGY OF THE CELL 32..16(2021):1474-1486