Abstract:
:Dysregulation of nuclear envelope (NE) assembly results in various cancers; for example, renal and some lung carcinomas ensue due to NE malformation. The NE is a dynamic membrane compartment and its completion during mitosis is a highly regulated process, but the detailed mechanism still remains incompletely understood. Previous studies have found that isolated diacylglycerol (DAG)-containing vesicles are essential for completing the fusion of the NE in nonsomatic cells. We investigated the impact of DAG depletion from the cis-Golgi in mammalian cells on NE reassembly. Using advanced electron microscopy, we observed an enriched DAG population of vesicles at the vicinity of the NE gaps of telophase mammalian cells. We applied a mini singlet oxygen generator-C1-domain tag that localized DAG-enriched vesicles at the perinuclear region, which suggested the existence of NE fusogenic vesicles. We quantified the impact of Golgi-DAG depletion by measuring the in situ NE rim curvature of the reforming NE. The rim curvature in these cells was significantly reduced compared with controls, which indicated a localized defect in NE morphology. Our novel results demonstrate the significance of the role of DAG from the cis-Golgi for the regulation of NE assembly.
journal_name
J Lipid Resjournal_title
Journal of lipid researchauthors
Chung GHC,Domart MC,Peddie C,Mantell J,Mclaverty K,Arabiotorre A,Hodgson L,Byrne RD,Verkade P,Arkill K,Collinson LM,Larijani Bdoi
10.1194/jlr.M083899subject
Has Abstractpub_date
2018-08-01 00:00:00pages
1402-1413issue
8eissn
0022-2275issn
1539-7262pii
jlr.M083899journal_volume
59pub_type
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journal_title:Journal of lipid research
pub_type: 杂志文章
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journal_title:Journal of lipid research
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journal_title:Journal of lipid research
pub_type: 杂志文章
doi:
更新日期:1998-07-01 00:00:00
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journal_title:Journal of lipid research
pub_type: 杂志文章
doi:
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journal_title:Journal of lipid research
pub_type: 杂志文章
doi:
更新日期:1982-08-01 00:00:00
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doi:
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更新日期:2002-03-01 00:00:00
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journal_title:Journal of lipid research
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journal_title:Journal of lipid research
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journal_title:Journal of lipid research
pub_type: 杂志文章
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更新日期:1987-12-01 00:00:00
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journal_title:Journal of lipid research
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