Proteomic dissection of large extracellular vesicle surfaceome unravels interactive surface platform

Abstract The extracellular vesicle (EV) surface proteome (surfaceome) acts as a fundamental signalling gateway by bridging intra‐ and extracellular signalling networks, dictates EVs’ capacity to communicate and interact with their environment, and is a source of potential disease biomarkers and ther...

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Autores principales: Alin Rai, Haoyun Fang, Bethany Claridge, Richard J. Simpson, David W Greening
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Publicado: Taylor & Francis Group 2021
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Acceso en línea:https://doaj.org/article/0cf32a4a52624a688cb04bd23aca0176
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spelling oai:doaj.org-article:0cf32a4a52624a688cb04bd23aca01762021-11-24T14:04:31ZProteomic dissection of large extracellular vesicle surfaceome unravels interactive surface platform2001-307810.1002/jev2.12164https://doaj.org/article/0cf32a4a52624a688cb04bd23aca01762021-11-01T00:00:00Zhttps://doi.org/10.1002/jev2.12164https://doaj.org/toc/2001-3078Abstract The extracellular vesicle (EV) surface proteome (surfaceome) acts as a fundamental signalling gateway by bridging intra‐ and extracellular signalling networks, dictates EVs’ capacity to communicate and interact with their environment, and is a source of potential disease biomarkers and therapeutic targets. However, our understanding of surface protein composition of large EVs (L‐EVs, 100–800 nm, mean 310 nm, ATP5F1A, ATP5F1B, DHX9, GOT2, HSPA5, HSPD1, MDH2, STOML2), a major EV‐subtype that are distinct from small EVs (S‐EVs, 30–150 nm, mean 110 nm, CD44, CD63, CD81, CD82, CD9, PDCD6IP, SDCBP, TSG101) remains limited. Using a membrane impermeant derivative of biotin to capture surface proteins coupled to mass spectrometry analysis, we show that out of 4143 proteins identified in density‐gradient purified L‐EVs (1.07–1.11 g/mL, from multiple cancer cell lines), 961 proteins are surface accessible. The surface molecular diversity of L‐EVs include (i) bona fide plasma membrane anchored proteins (cluster of differentiation, transporters, receptors and GPI anchored proteins implicated in cell‐cell and cell‐ECM interactions); and (ii) membrane surface‐associated proteins (that are released by divalent ion chelator EDTA) implicated in actin cytoskeleton regulation, junction organization, glycolysis and platelet activation. Ligand‐receptor analysis of L‐EV surfaceome (e.g., ITGAV/ITGB1) uncovered interactome spanning 172 experimentally verified cognate binding partners (e.g., ANGPTL3, PLG, and VTN) with highest tissue enrichment for liver. Assessment of biotin inaccessible L‐EV proteome revealed enrichment for proteins belonging to COPI/II‐coated ER/Golgi‐derived vesicles and mitochondria. Additionally, despite common surface proteins identified in L‐EVs and S‐EVs, our data reveals surfaceome heterogeneity between the two EV‐subtype. Collectively, our study provides critical insights into diverse proteins operating at the interactive platform of L‐EVs and molecular leads for future studies seeking to decipher L‐EV heterogeneity and function.Alin RaiHaoyun FangBethany ClaridgeRichard J. SimpsonDavid W GreeningTaylor & Francis Grouparticleextracellular vesiclesmass spectrometry‐based proteomicssurface proteinssurfaceomevesicle heterogeneityCytologyQH573-671ENJournal of Extracellular Vesicles, Vol 10, Iss 13, Pp n/a-n/a (2021)
institution DOAJ
collection DOAJ
language EN
topic extracellular vesicles
mass spectrometry‐based proteomics
surface proteins
surfaceome
vesicle heterogeneity
Cytology
QH573-671
spellingShingle extracellular vesicles
mass spectrometry‐based proteomics
surface proteins
surfaceome
vesicle heterogeneity
Cytology
QH573-671
Alin Rai
Haoyun Fang
Bethany Claridge
Richard J. Simpson
David W Greening
Proteomic dissection of large extracellular vesicle surfaceome unravels interactive surface platform
description Abstract The extracellular vesicle (EV) surface proteome (surfaceome) acts as a fundamental signalling gateway by bridging intra‐ and extracellular signalling networks, dictates EVs’ capacity to communicate and interact with their environment, and is a source of potential disease biomarkers and therapeutic targets. However, our understanding of surface protein composition of large EVs (L‐EVs, 100–800 nm, mean 310 nm, ATP5F1A, ATP5F1B, DHX9, GOT2, HSPA5, HSPD1, MDH2, STOML2), a major EV‐subtype that are distinct from small EVs (S‐EVs, 30–150 nm, mean 110 nm, CD44, CD63, CD81, CD82, CD9, PDCD6IP, SDCBP, TSG101) remains limited. Using a membrane impermeant derivative of biotin to capture surface proteins coupled to mass spectrometry analysis, we show that out of 4143 proteins identified in density‐gradient purified L‐EVs (1.07–1.11 g/mL, from multiple cancer cell lines), 961 proteins are surface accessible. The surface molecular diversity of L‐EVs include (i) bona fide plasma membrane anchored proteins (cluster of differentiation, transporters, receptors and GPI anchored proteins implicated in cell‐cell and cell‐ECM interactions); and (ii) membrane surface‐associated proteins (that are released by divalent ion chelator EDTA) implicated in actin cytoskeleton regulation, junction organization, glycolysis and platelet activation. Ligand‐receptor analysis of L‐EV surfaceome (e.g., ITGAV/ITGB1) uncovered interactome spanning 172 experimentally verified cognate binding partners (e.g., ANGPTL3, PLG, and VTN) with highest tissue enrichment for liver. Assessment of biotin inaccessible L‐EV proteome revealed enrichment for proteins belonging to COPI/II‐coated ER/Golgi‐derived vesicles and mitochondria. Additionally, despite common surface proteins identified in L‐EVs and S‐EVs, our data reveals surfaceome heterogeneity between the two EV‐subtype. Collectively, our study provides critical insights into diverse proteins operating at the interactive platform of L‐EVs and molecular leads for future studies seeking to decipher L‐EV heterogeneity and function.
format article
author Alin Rai
Haoyun Fang
Bethany Claridge
Richard J. Simpson
David W Greening
author_facet Alin Rai
Haoyun Fang
Bethany Claridge
Richard J. Simpson
David W Greening
author_sort Alin Rai
title Proteomic dissection of large extracellular vesicle surfaceome unravels interactive surface platform
title_short Proteomic dissection of large extracellular vesicle surfaceome unravels interactive surface platform
title_full Proteomic dissection of large extracellular vesicle surfaceome unravels interactive surface platform
title_fullStr Proteomic dissection of large extracellular vesicle surfaceome unravels interactive surface platform
title_full_unstemmed Proteomic dissection of large extracellular vesicle surfaceome unravels interactive surface platform
title_sort proteomic dissection of large extracellular vesicle surfaceome unravels interactive surface platform
publisher Taylor & Francis Group
publishDate 2021
url https://doaj.org/article/0cf32a4a52624a688cb04bd23aca0176
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AT haoyunfang proteomicdissectionoflargeextracellularvesiclesurfaceomeunravelsinteractivesurfaceplatform
AT bethanyclaridge proteomicdissectionoflargeextracellularvesiclesurfaceomeunravelsinteractivesurfaceplatform
AT richardjsimpson proteomicdissectionoflargeextracellularvesiclesurfaceomeunravelsinteractivesurfaceplatform
AT davidwgreening proteomicdissectionoflargeextracellularvesiclesurfaceomeunravelsinteractivesurfaceplatform
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