PMID- 23261443 OWN - NLM STAT- MEDLINE DCOM- 20130722 LR - 20191210 IS - 1090-2104 (Electronic) IS - 0006-291X (Linking) VI - 430 IP - 3 DP - 2013 Jan 18 TI - Membrane localization of Junin virus glycoproteins requires cholesterol and cholesterol rich membranes. PG - 912-7 LID - S0006-291X(12)02401-1 [pii] LID - 10.1016/j.bbrc.2012.12.053 [doi] AB - Arenavirus morphogenesis and budding occurs at cellular plasma membrane; however, the nature of membrane assembly sites remains poorly understood. In this study we examined the effect of different cholesterol-lowering agents on Junin virus (JUNV) multiplication. We found that cholesterol cell depletion reduced JUNV glycoproteins (GPs) membrane expression and virus budding. Analysis of membrane protein insolubility in Triton X-100 suggested that JUNV GPs associate with cholesterol enriched membranes. Rafts dissociation conditions as warm detergent extraction and cholesterol removal by methyl-beta-cyclodextrin compound showed to impair GPs cholesterol enriched membrane association. Analysis of GPs transfected cells showed similar results suggesting that membrane raft association is independent of other viral proteins. CI - Copyright (c) 2012 Elsevier Inc. All rights reserved. FAU - Cordo, Sandra M AU - Cordo SM AD - Laboratorio de Virologia, Departamento de Quimica Biologica, IQUIBICEN, Facultad de Ciencias Exactas y Naturales, UBA, Ciudad Universitaria, Pabellon II, Piso 4, 1428, Buenos Aires, Argentina. FAU - Valko, Ayelen AU - Valko A FAU - Martinez, Guadalupe M AU - Martinez GM FAU - Candurra, Nelida A AU - Candurra NA LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20121219 PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (Anticholesteremic Agents) RN - 0 (Membrane Glycoproteins) RN - 0 (Viral Envelope Proteins) RN - 97C5T2UQ7J (Cholesterol) SB - IM MH - Animals MH - Anticholesteremic Agents/pharmacology MH - Cell Membrane/*chemistry/*virology MH - Chlorocebus aethiops MH - Cholesterol/*chemistry MH - Dogs MH - Junin virus/*physiology MH - Madin Darby Canine Kidney Cells MH - Membrane Glycoproteins/*metabolism MH - Vero Cells MH - Viral Envelope Proteins/*metabolism MH - Virus Replication/drug effects/*physiology EDAT- 2012/12/25 06:00 MHDA- 2013/07/23 06:00 CRDT- 2012/12/25 06:00 PHST- 2012/12/03 00:00 [received] PHST- 2012/12/06 00:00 [accepted] PHST- 2012/12/25 06:00 [entrez] PHST- 2012/12/25 06:00 [pubmed] PHST- 2013/07/23 06:00 [medline] AID - S0006-291X(12)02401-1 [pii] AID - 10.1016/j.bbrc.2012.12.053 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 2013 Jan 18;430(3):912-7. doi: 10.1016/j.bbrc.2012.12.053. Epub 2012 Dec 19.