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Extracellular vesicles from KSHV-infected endothelial cells activate the complement system
Extracellular vesicles (EVs), released by cells, are associated with cell-to-cell communication and regulate various cellular processes. EVs draw parallels with viruses for their similar structures and functions. Increasing evidences from recent studies indicate that cells infected with viruses rele...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Impact Journals LLC
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5725135/ https://www.ncbi.nlm.nih.gov/pubmed/29245944 http://dx.doi.org/10.18632/oncotarget.21668 |
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author | Jeon, Hyungtaek Yoo, Seung-Min Choi, Hyo Sun Mun, Ji Young Kang, Hee-Gyoo Lee, Jiyeong Park, Jinsung Gao, Shou-Jiang Lee, Myung-Shin |
author_facet | Jeon, Hyungtaek Yoo, Seung-Min Choi, Hyo Sun Mun, Ji Young Kang, Hee-Gyoo Lee, Jiyeong Park, Jinsung Gao, Shou-Jiang Lee, Myung-Shin |
author_sort | Jeon, Hyungtaek |
collection | PubMed |
description | Extracellular vesicles (EVs), released by cells, are associated with cell-to-cell communication and regulate various cellular processes. EVs draw parallels with viruses for their similar structures and functions. Increasing evidences from recent studies indicate that cells infected with viruses release a variety of EVs. Delineating the functions and mechanisms of EVs released during virus infection is essential for understanding the molecular basis of viral infection and replication as well as associated pathogenesis. The most challenging obstacle for these studies is the separation of EVs from viruses. In this study, we successfully isolated the EVs from de novo Kaposi’s sarcoma-associated herpesvirus (KSHV) infected-human endothelial cells during the period between virus entry and production. Intriguingly, a proteomics analysis of these EVs has revealed alterations of the complement system. Additionally, we have discovered that the EVs from KSHV-infected endothelial cells are potent activators of an alternative pathway of the complement system via exploitation of the endogenous C3 complement protein and properdin. Furthermore, we have found that complement activation promotes KSHV persistent latent infection by activating the NF-κB pathway, which enhances the survival of KSHV-infected cells and inhibits viral lytic replication. Our work identifies a novel role of EVs induced by KSHV during de novo infection and the underlying mechanism of complement activation by EVs. |
format | Online Article Text |
id | pubmed-5725135 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Impact Journals LLC |
record_format | MEDLINE/PubMed |
spelling | pubmed-57251352017-12-14 Extracellular vesicles from KSHV-infected endothelial cells activate the complement system Jeon, Hyungtaek Yoo, Seung-Min Choi, Hyo Sun Mun, Ji Young Kang, Hee-Gyoo Lee, Jiyeong Park, Jinsung Gao, Shou-Jiang Lee, Myung-Shin Oncotarget Research Paper Extracellular vesicles (EVs), released by cells, are associated with cell-to-cell communication and regulate various cellular processes. EVs draw parallels with viruses for their similar structures and functions. Increasing evidences from recent studies indicate that cells infected with viruses release a variety of EVs. Delineating the functions and mechanisms of EVs released during virus infection is essential for understanding the molecular basis of viral infection and replication as well as associated pathogenesis. The most challenging obstacle for these studies is the separation of EVs from viruses. In this study, we successfully isolated the EVs from de novo Kaposi’s sarcoma-associated herpesvirus (KSHV) infected-human endothelial cells during the period between virus entry and production. Intriguingly, a proteomics analysis of these EVs has revealed alterations of the complement system. Additionally, we have discovered that the EVs from KSHV-infected endothelial cells are potent activators of an alternative pathway of the complement system via exploitation of the endogenous C3 complement protein and properdin. Furthermore, we have found that complement activation promotes KSHV persistent latent infection by activating the NF-κB pathway, which enhances the survival of KSHV-infected cells and inhibits viral lytic replication. Our work identifies a novel role of EVs induced by KSHV during de novo infection and the underlying mechanism of complement activation by EVs. Impact Journals LLC 2017-10-09 /pmc/articles/PMC5725135/ /pubmed/29245944 http://dx.doi.org/10.18632/oncotarget.21668 Text en Copyright: © 2017 Jeon et al. http://creativecommons.org/licenses/by/3.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/) 3.0 (CC BY 3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Paper Jeon, Hyungtaek Yoo, Seung-Min Choi, Hyo Sun Mun, Ji Young Kang, Hee-Gyoo Lee, Jiyeong Park, Jinsung Gao, Shou-Jiang Lee, Myung-Shin Extracellular vesicles from KSHV-infected endothelial cells activate the complement system |
title | Extracellular vesicles from KSHV-infected endothelial cells activate the complement system |
title_full | Extracellular vesicles from KSHV-infected endothelial cells activate the complement system |
title_fullStr | Extracellular vesicles from KSHV-infected endothelial cells activate the complement system |
title_full_unstemmed | Extracellular vesicles from KSHV-infected endothelial cells activate the complement system |
title_short | Extracellular vesicles from KSHV-infected endothelial cells activate the complement system |
title_sort | extracellular vesicles from kshv-infected endothelial cells activate the complement system |
topic | Research Paper |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5725135/ https://www.ncbi.nlm.nih.gov/pubmed/29245944 http://dx.doi.org/10.18632/oncotarget.21668 |
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