Chromatin extracellular trap release in rainbow trout, Oncorhynchus mykiss (Walbaum, 1792)
Neutrophils release nuclear chromatin decorated with antimicrobial proteins into the extracellular milieu as an innate immune defence mechanism to counter invading microbes. These chromatin structures, called extracellular traps (ETs) and released by a process called NETosis, have been detected in m...
Published in: | Fish & Shellfish Immunology |
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Online Access: | http://hdl.handle.net/1893/30735 https://doi.org/10.1016/j.fsi.2020.01.040 http://dspace.stir.ac.uk/bitstream/1893/30735/1/1-s2.0-S1050464820300486-main.pdf |
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ftunivstirling:oai:dspace.stir.ac.uk:1893/30735 2023-05-15T18:41:15+02:00 Chromatin extracellular trap release in rainbow trout, Oncorhynchus mykiss (Walbaum, 1792) Van, Andre P Alvarez de Haro, Neila Bron, James E Desbois, Andrew P BBSRC Biotechnology and Biological Sciences Research Council Institute of Aquaculture orcid:0000-0003-3544-0519 orcid:0000-0001-6052-8761 2020-04 application/pdf http://hdl.handle.net/1893/30735 https://doi.org/10.1016/j.fsi.2020.01.040 http://dspace.stir.ac.uk/bitstream/1893/30735/1/1-s2.0-S1050464820300486-main.pdf en eng Elsevier BV Van AP, Alvarez de Haro N, Bron JE & Desbois AP (2020) Chromatin extracellular trap release in rainbow trout, Oncorhynchus mykiss (Walbaum, 1792). Fish and Shellfish Immunology, 99, pp. 227-238. https://doi.org/10.1016/j.fsi.2020.01.040 The role of chromatin extracellular traps in host defence of fish against pathogens BB/M026132/1 http://hdl.handle.net/1893/30735 doi:10.1016/j.fsi.2020.01.040 31988016 WOS:000523601500023 2-s2.0-85079395313 1513366 http://dspace.stir.ac.uk/bitstream/1893/30735/1/1-s2.0-S1050464820300486-main.pdf This is an open access article distributed under the terms of the Creative Commons CC-BY license (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. You are not required to obtain permission to reuse this article. http://creativecommons.org/licenses/by/4.0/ CC-BY Granulocytes Innate immunity Leukocytes ETosis Neutrophil extracellular traps (NETs) Phagocytes Salmonid Teleost Journal Article VoR - Version of Record 2020 ftunivstirling https://doi.org/10.1016/j.fsi.2020.01.040 2022-06-13T18:46:20Z Neutrophils release nuclear chromatin decorated with antimicrobial proteins into the extracellular milieu as an innate immune defence mechanism to counter invading microbes. These chromatin structures, called extracellular traps (ETs) and released by a process called NETosis, have been detected in mammals, certain invertebrates and some fish species, including fathead minnow, zebrafish, common carp, turbot, sole and barramundi. However, there have been no previous studies of ETs in the Salmonidae. ETs are released in response to chemical and biological stimuli, but observations from different fish species are inconsistent, particularly regarding the potency of various inducers and inhibitors. Thus, this present study aimed to describe ET release in a salmonid (rainbow trout, Oncorhynchus mykiss (Walbaum, 1792)) and uncover the inducers and inhibitors that can control this response. Highly enriched suspensions of polymorphonuclear cells (PMNs; mainly neutrophils) were prepared from head kidney tissues by a triple-layer Percoll gradient technique. ET structures were visualised in PMN-enriched suspensions through staining of the chromatin with nucleic acid-specific dyes and immunocytochemical probing of characteristic proteins expected to decorate the structure. ET release was quantified after incubation with inducers and inhibitors known to affect this response in other organisms. Structures resembling ETs stained positively with SYTOX Green (a stain specific for nucleic acid) while immunocytochemistry was used to detect neutrophil elastase, myeloperoxidase and H2A histone in the structures, which are diagnostic proteinaceous markers of ETs. Consistent with other studies on mammals and some fish species, calcium ionophore and flagellin were potent inducers of ETs, while cytochalasin D inhibited NETosis. Phorbol 12-myristate 13-acetate (PMA), used commonly to induce ETs, exerted only weak stimulatory activity, while heat-killed bacteria and lipopolysaccharide did not induce ET release. Unexpectedly, the ... Article in Journal/Newspaper Turbot University of Stirling: Stirling Digital Research Repository Fish & Shellfish Immunology 99 227 238 |
institution |
Open Polar |
collection |
University of Stirling: Stirling Digital Research Repository |
op_collection_id |
ftunivstirling |
language |
English |
topic |
Granulocytes Innate immunity Leukocytes ETosis Neutrophil extracellular traps (NETs) Phagocytes Salmonid Teleost |
spellingShingle |
Granulocytes Innate immunity Leukocytes ETosis Neutrophil extracellular traps (NETs) Phagocytes Salmonid Teleost Van, Andre P Alvarez de Haro, Neila Bron, James E Desbois, Andrew P Chromatin extracellular trap release in rainbow trout, Oncorhynchus mykiss (Walbaum, 1792) |
topic_facet |
Granulocytes Innate immunity Leukocytes ETosis Neutrophil extracellular traps (NETs) Phagocytes Salmonid Teleost |
description |
Neutrophils release nuclear chromatin decorated with antimicrobial proteins into the extracellular milieu as an innate immune defence mechanism to counter invading microbes. These chromatin structures, called extracellular traps (ETs) and released by a process called NETosis, have been detected in mammals, certain invertebrates and some fish species, including fathead minnow, zebrafish, common carp, turbot, sole and barramundi. However, there have been no previous studies of ETs in the Salmonidae. ETs are released in response to chemical and biological stimuli, but observations from different fish species are inconsistent, particularly regarding the potency of various inducers and inhibitors. Thus, this present study aimed to describe ET release in a salmonid (rainbow trout, Oncorhynchus mykiss (Walbaum, 1792)) and uncover the inducers and inhibitors that can control this response. Highly enriched suspensions of polymorphonuclear cells (PMNs; mainly neutrophils) were prepared from head kidney tissues by a triple-layer Percoll gradient technique. ET structures were visualised in PMN-enriched suspensions through staining of the chromatin with nucleic acid-specific dyes and immunocytochemical probing of characteristic proteins expected to decorate the structure. ET release was quantified after incubation with inducers and inhibitors known to affect this response in other organisms. Structures resembling ETs stained positively with SYTOX Green (a stain specific for nucleic acid) while immunocytochemistry was used to detect neutrophil elastase, myeloperoxidase and H2A histone in the structures, which are diagnostic proteinaceous markers of ETs. Consistent with other studies on mammals and some fish species, calcium ionophore and flagellin were potent inducers of ETs, while cytochalasin D inhibited NETosis. Phorbol 12-myristate 13-acetate (PMA), used commonly to induce ETs, exerted only weak stimulatory activity, while heat-killed bacteria and lipopolysaccharide did not induce ET release. Unexpectedly, the ... |
author2 |
BBSRC Biotechnology and Biological Sciences Research Council Institute of Aquaculture orcid:0000-0003-3544-0519 orcid:0000-0001-6052-8761 |
format |
Article in Journal/Newspaper |
author |
Van, Andre P Alvarez de Haro, Neila Bron, James E Desbois, Andrew P |
author_facet |
Van, Andre P Alvarez de Haro, Neila Bron, James E Desbois, Andrew P |
author_sort |
Van, Andre P |
title |
Chromatin extracellular trap release in rainbow trout, Oncorhynchus mykiss (Walbaum, 1792) |
title_short |
Chromatin extracellular trap release in rainbow trout, Oncorhynchus mykiss (Walbaum, 1792) |
title_full |
Chromatin extracellular trap release in rainbow trout, Oncorhynchus mykiss (Walbaum, 1792) |
title_fullStr |
Chromatin extracellular trap release in rainbow trout, Oncorhynchus mykiss (Walbaum, 1792) |
title_full_unstemmed |
Chromatin extracellular trap release in rainbow trout, Oncorhynchus mykiss (Walbaum, 1792) |
title_sort |
chromatin extracellular trap release in rainbow trout, oncorhynchus mykiss (walbaum, 1792) |
publisher |
Elsevier BV |
publishDate |
2020 |
url |
http://hdl.handle.net/1893/30735 https://doi.org/10.1016/j.fsi.2020.01.040 http://dspace.stir.ac.uk/bitstream/1893/30735/1/1-s2.0-S1050464820300486-main.pdf |
genre |
Turbot |
genre_facet |
Turbot |
op_relation |
Van AP, Alvarez de Haro N, Bron JE & Desbois AP (2020) Chromatin extracellular trap release in rainbow trout, Oncorhynchus mykiss (Walbaum, 1792). Fish and Shellfish Immunology, 99, pp. 227-238. https://doi.org/10.1016/j.fsi.2020.01.040 The role of chromatin extracellular traps in host defence of fish against pathogens BB/M026132/1 http://hdl.handle.net/1893/30735 doi:10.1016/j.fsi.2020.01.040 31988016 WOS:000523601500023 2-s2.0-85079395313 1513366 http://dspace.stir.ac.uk/bitstream/1893/30735/1/1-s2.0-S1050464820300486-main.pdf |
op_rights |
This is an open access article distributed under the terms of the Creative Commons CC-BY license (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. You are not required to obtain permission to reuse this article. http://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1016/j.fsi.2020.01.040 |
container_title |
Fish & Shellfish Immunology |
container_volume |
99 |
container_start_page |
227 |
op_container_end_page |
238 |
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1766230758598377472 |