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Article: Lyn kinase regulates egress of flaviviruses in autophagosome-derived organelles

TitleLyn kinase regulates egress of flaviviruses in autophagosome-derived organelles
Authors
Issue Date2020
PublisherNature Research: Fully open access journals. The Journal's web site is located at http://www.nature.com/ncomms/index.html
Citation
Nature Communications, 2020, v. 11, p. article no. 5189 How to Cite?
AbstractAmong the various host cellular processes that are hijacked by flaviviruses, few mechanisms have been described with regard to viral egress. Here we investigate how flaviviruses exploit Src family kinases (SFKs) for exit from infected cells. We identify Lyn as a critical component for secretion of Dengue and Zika infectious particles and their corresponding virus like particles (VLPs). Pharmacological inhibition or genetic depletion of the SFKs, Lyn in particular, block virus secretion. Lyn−/− cells are impaired in virus release and are rescued when reconstituted with wild-type Lyn, but not a kinase- or palmitoylation-deficient Lyn mutant. We establish that virus particles are secreted in two distinct populations – one as free virions and the other enclosed within membranes. Lyn is critical for the latter, which consists of proteolytically processed, infectious virus progenies within autophagosome-derived vesicles. This process depends on Ulk1, Rab GTPases and SNARE complexes implicated in secretory but not degradative autophagy and occur with significantly faster kinetics than the conventional secretory pathway. Our study reveals a previously undiscovered Lyn-dependent exit route of flaviviruses in LC3+ secretory organelles that enables them to evade circulating antibodies and might affect tissue tropism.
Persistent Identifierhttp://hdl.handle.net/10722/293803
ISSN
2023 Impact Factor: 14.7
2023 SCImago Journal Rankings: 4.887
PubMed Central ID
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLi, MY-
dc.contributor.authorNaik, TS-
dc.contributor.authorSiu, LYL-
dc.contributor.authorAcuto, O-
dc.contributor.authorSpooner, E-
dc.contributor.authorWang, P-
dc.contributor.authorYang, X-
dc.contributor.authorLin, Y-
dc.contributor.authorBruzzone, R-
dc.contributor.authorAshour, J-
dc.contributor.authorEvans, MJ-
dc.contributor.authorSanyal, S-
dc.date.accessioned2020-11-23T08:22:01Z-
dc.date.available2020-11-23T08:22:01Z-
dc.date.issued2020-
dc.identifier.citationNature Communications, 2020, v. 11, p. article no. 5189-
dc.identifier.issn2041-1723-
dc.identifier.urihttp://hdl.handle.net/10722/293803-
dc.description.abstractAmong the various host cellular processes that are hijacked by flaviviruses, few mechanisms have been described with regard to viral egress. Here we investigate how flaviviruses exploit Src family kinases (SFKs) for exit from infected cells. We identify Lyn as a critical component for secretion of Dengue and Zika infectious particles and their corresponding virus like particles (VLPs). Pharmacological inhibition or genetic depletion of the SFKs, Lyn in particular, block virus secretion. Lyn−/− cells are impaired in virus release and are rescued when reconstituted with wild-type Lyn, but not a kinase- or palmitoylation-deficient Lyn mutant. We establish that virus particles are secreted in two distinct populations – one as free virions and the other enclosed within membranes. Lyn is critical for the latter, which consists of proteolytically processed, infectious virus progenies within autophagosome-derived vesicles. This process depends on Ulk1, Rab GTPases and SNARE complexes implicated in secretory but not degradative autophagy and occur with significantly faster kinetics than the conventional secretory pathway. Our study reveals a previously undiscovered Lyn-dependent exit route of flaviviruses in LC3+ secretory organelles that enables them to evade circulating antibodies and might affect tissue tropism.-
dc.languageeng-
dc.publisherNature Research: Fully open access journals. The Journal's web site is located at http://www.nature.com/ncomms/index.html-
dc.relation.ispartofNature Communications-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titleLyn kinase regulates egress of flaviviruses in autophagosome-derived organelles-
dc.typeArticle-
dc.identifier.emailSiu, LYL: ylsiu@hku.hk-
dc.identifier.emailBruzzone, R: bruzzone@hkucc.hku.hk-
dc.identifier.emailSanyal, S: sanyal@hku.hk-
dc.identifier.authorityBruzzone, R=rp01442-
dc.identifier.authoritySanyal, S=rp01794-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1038/s41467-020-19028-w-
dc.identifier.pmid33060596-
dc.identifier.pmcidPMC7564011-
dc.identifier.scopuseid_2-s2.0-85092570692-
dc.identifier.hkuros320160-
dc.identifier.volume11-
dc.identifier.spagearticle no. 5189-
dc.identifier.epagearticle no. 5189-
dc.identifier.isiWOS:000582681400001-
dc.publisher.placeUnited Kingdom-

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