Campsteijn Coen, Vietri Marina, Stenmark Harald
Centre for Cancer Biomedicine, Faculty of Medicine, University of Oslo, Montebello, N-0379 Oslo, Norway; Department of Molecular Cell Biology, Institute for Cancer Research, Oslo University Hospital, Montebello, N-0379 Oslo, Norway.
Centre for Cancer Biomedicine, Faculty of Medicine, University of Oslo, Montebello, N-0379 Oslo, Norway; Department of Molecular Cell Biology, Institute for Cancer Research, Oslo University Hospital, Montebello, N-0379 Oslo, Norway.
Curr Opin Cell Biol. 2016 Aug;41:1-8. doi: 10.1016/j.ceb.2016.03.008. Epub 2016 Mar 28.
The endosomal sorting complex required for transport (ESCRT), originally identified for its role in endosomal protein sorting and biogenesis of multivesicular endosomes (MVEs), has proven to be a versatile machinery for involution and scission of narrow membrane invaginations filled with cytosol. Budding of enveloped viruses and cytokinetic abscission were early described functions for the ESCRT machinery, and recently a number of new ESCRT functions have emerged. These include cytokinetic abscission checkpoint control, plasma membrane repair, exovesicle release, quality control of nuclear pore complexes, neuron pruning, and sealing of the newly formed nuclear envelope. Here we review these novel ESCRT mechanisms and discuss similarities and differences between the various ESCRT-dependent activities.
转运所需内体分选复合物(ESCRT)最初因其在内体蛋白分选和多泡内体(MVE)生物发生中的作用而被发现,现已证明它是一种多功能机制,可用于内陷并切断充满细胞质的狭窄膜内陷。包膜病毒出芽和细胞分裂切离是ESCRT机制早期被描述的功能,最近又出现了许多新的ESCRT功能。这些功能包括细胞分裂切离检查点控制、质膜修复、外囊泡释放、核孔复合体的质量控制、神经元修剪以及新形成的核膜的密封。在此,我们综述这些新的ESCRT机制,并讨论各种ESCRT依赖性活动之间的异同。