Deficient production of reactive oxygen species leads to severe chronic DSS-induced colitis in Ncf1/p47phox-mutant mice
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10316/109646 https://doi.org/10.1371/journal.pone.0097532 |
Resumo: | Background: Colitis is a common clinical complication in chronic granulomatous disease (CGD), a primary immunodeficiency caused by impaired oxidative burst. Existing experimental data from NADPH-oxidase knockout mice propose contradictory roles for the involvement of reactive oxygen species in colitis chronicity and severity. Since genetically controlled mice with a point-mutation in the Ncf1 gene are susceptible to chronic inflammation and autoimmunity, we tested whether they presented increased predisposition to develop chronic colitis. Methods: Colitis was induced in Ncf1-mutant and wild-type mice by a 1st 7-days cycle of dextran sulfate sodium (DSS), intercalated by a 7-days resting period followed by a 2nd 7-days DSS-cycle. Cytokines were quantified locally in the colon inflammatory infiltrates and in the serum. Leukocyte infiltration and morphological alterations of the colon mucosa were assessed by immunohistochemistry. Results: Clinical scores demonstrated a more severe colitis in Ncf1-mutant mice than controls, with no recovery during the resting period and a severe chronic colitis after the 2nd cycle, confirmed by histopathology and presence of infiltrating neutrophils, macrophages, plasmocytes and lymphocytes in the colon. Severe colitis was mediated by increased local expression of cytokines (IL-6, IL-10, TNF-a, IFN-c and IL-17A) and phosphorylation of Leucine-rich repeat kinase 2 (LRRK2). Serological cytokine titers of those inflammatory cytokines were more elevated in Ncf1-mutant than control mice, and were accompanied by systemic changes in functional subsets of monocytes, CD4+T and B cells. Conclusion: This suggests that an ineffective oxidative burst leads to severe chronic colitis through local accumulation of peroxynitrites, pro-inflammatory cytokines and lymphocytes and systemic immune deregulation similar to CGD. |
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Deficient production of reactive oxygen species leads to severe chronic DSS-induced colitis in Ncf1/p47phox-mutant miceAnimalsChronic DiseaseColitisCytokinesDextran SulfateDisease Models, AnimalInflammation MediatorsIntestinal MucosaLeucine-Rich Repeat Serine-Threonine Protein Kinase-2LeukocytesMaleMiceMice, KnockoutNADPH OxidasesPhenotypePhosphorylationProtein Serine-Threonine KinasesReactive Oxygen SpeciesMutationBackground: Colitis is a common clinical complication in chronic granulomatous disease (CGD), a primary immunodeficiency caused by impaired oxidative burst. Existing experimental data from NADPH-oxidase knockout mice propose contradictory roles for the involvement of reactive oxygen species in colitis chronicity and severity. Since genetically controlled mice with a point-mutation in the Ncf1 gene are susceptible to chronic inflammation and autoimmunity, we tested whether they presented increased predisposition to develop chronic colitis. Methods: Colitis was induced in Ncf1-mutant and wild-type mice by a 1st 7-days cycle of dextran sulfate sodium (DSS), intercalated by a 7-days resting period followed by a 2nd 7-days DSS-cycle. Cytokines were quantified locally in the colon inflammatory infiltrates and in the serum. Leukocyte infiltration and morphological alterations of the colon mucosa were assessed by immunohistochemistry. Results: Clinical scores demonstrated a more severe colitis in Ncf1-mutant mice than controls, with no recovery during the resting period and a severe chronic colitis after the 2nd cycle, confirmed by histopathology and presence of infiltrating neutrophils, macrophages, plasmocytes and lymphocytes in the colon. Severe colitis was mediated by increased local expression of cytokines (IL-6, IL-10, TNF-a, IFN-c and IL-17A) and phosphorylation of Leucine-rich repeat kinase 2 (LRRK2). Serological cytokine titers of those inflammatory cytokines were more elevated in Ncf1-mutant than control mice, and were accompanied by systemic changes in functional subsets of monocytes, CD4+T and B cells. Conclusion: This suggests that an ineffective oxidative burst leads to severe chronic colitis through local accumulation of peroxynitrites, pro-inflammatory cytokines and lymphocytes and systemic immune deregulation similar to CGD.Public Library of Science2014info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/109646http://hdl.handle.net/10316/109646https://doi.org/10.1371/journal.pone.0097532eng1932-6203Rodrigues-Sousa, TiagoLadeirinha, Ana Filipa FerreiraSantiago, Ana RaquelCarvalheiro, HelenaRaposo, BrunoAlarcão, AnaCabrita, AntónioHolmdahl, RikardCarvalho, LinaCarneiro, M. Margarida Soutoinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-10-19T11:00:06Zoai:estudogeral.uc.pt:10316/109646Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:25:48.441720Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Deficient production of reactive oxygen species leads to severe chronic DSS-induced colitis in Ncf1/p47phox-mutant mice |
title |
Deficient production of reactive oxygen species leads to severe chronic DSS-induced colitis in Ncf1/p47phox-mutant mice |
spellingShingle |
Deficient production of reactive oxygen species leads to severe chronic DSS-induced colitis in Ncf1/p47phox-mutant mice Rodrigues-Sousa, Tiago Animals Chronic Disease Colitis Cytokines Dextran Sulfate Disease Models, Animal Inflammation Mediators Intestinal Mucosa Leucine-Rich Repeat Serine-Threonine Protein Kinase-2 Leukocytes Male Mice Mice, Knockout NADPH Oxidases Phenotype Phosphorylation Protein Serine-Threonine Kinases Reactive Oxygen Species Mutation |
title_short |
Deficient production of reactive oxygen species leads to severe chronic DSS-induced colitis in Ncf1/p47phox-mutant mice |
title_full |
Deficient production of reactive oxygen species leads to severe chronic DSS-induced colitis in Ncf1/p47phox-mutant mice |
title_fullStr |
Deficient production of reactive oxygen species leads to severe chronic DSS-induced colitis in Ncf1/p47phox-mutant mice |
title_full_unstemmed |
Deficient production of reactive oxygen species leads to severe chronic DSS-induced colitis in Ncf1/p47phox-mutant mice |
title_sort |
Deficient production of reactive oxygen species leads to severe chronic DSS-induced colitis in Ncf1/p47phox-mutant mice |
author |
Rodrigues-Sousa, Tiago |
author_facet |
Rodrigues-Sousa, Tiago Ladeirinha, Ana Filipa Ferreira Santiago, Ana Raquel Carvalheiro, Helena Raposo, Bruno Alarcão, Ana Cabrita, António Holmdahl, Rikard Carvalho, Lina Carneiro, M. Margarida Souto |
author_role |
author |
author2 |
Ladeirinha, Ana Filipa Ferreira Santiago, Ana Raquel Carvalheiro, Helena Raposo, Bruno Alarcão, Ana Cabrita, António Holmdahl, Rikard Carvalho, Lina Carneiro, M. Margarida Souto |
author2_role |
author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Rodrigues-Sousa, Tiago Ladeirinha, Ana Filipa Ferreira Santiago, Ana Raquel Carvalheiro, Helena Raposo, Bruno Alarcão, Ana Cabrita, António Holmdahl, Rikard Carvalho, Lina Carneiro, M. Margarida Souto |
dc.subject.por.fl_str_mv |
Animals Chronic Disease Colitis Cytokines Dextran Sulfate Disease Models, Animal Inflammation Mediators Intestinal Mucosa Leucine-Rich Repeat Serine-Threonine Protein Kinase-2 Leukocytes Male Mice Mice, Knockout NADPH Oxidases Phenotype Phosphorylation Protein Serine-Threonine Kinases Reactive Oxygen Species Mutation |
topic |
Animals Chronic Disease Colitis Cytokines Dextran Sulfate Disease Models, Animal Inflammation Mediators Intestinal Mucosa Leucine-Rich Repeat Serine-Threonine Protein Kinase-2 Leukocytes Male Mice Mice, Knockout NADPH Oxidases Phenotype Phosphorylation Protein Serine-Threonine Kinases Reactive Oxygen Species Mutation |
description |
Background: Colitis is a common clinical complication in chronic granulomatous disease (CGD), a primary immunodeficiency caused by impaired oxidative burst. Existing experimental data from NADPH-oxidase knockout mice propose contradictory roles for the involvement of reactive oxygen species in colitis chronicity and severity. Since genetically controlled mice with a point-mutation in the Ncf1 gene are susceptible to chronic inflammation and autoimmunity, we tested whether they presented increased predisposition to develop chronic colitis. Methods: Colitis was induced in Ncf1-mutant and wild-type mice by a 1st 7-days cycle of dextran sulfate sodium (DSS), intercalated by a 7-days resting period followed by a 2nd 7-days DSS-cycle. Cytokines were quantified locally in the colon inflammatory infiltrates and in the serum. Leukocyte infiltration and morphological alterations of the colon mucosa were assessed by immunohistochemistry. Results: Clinical scores demonstrated a more severe colitis in Ncf1-mutant mice than controls, with no recovery during the resting period and a severe chronic colitis after the 2nd cycle, confirmed by histopathology and presence of infiltrating neutrophils, macrophages, plasmocytes and lymphocytes in the colon. Severe colitis was mediated by increased local expression of cytokines (IL-6, IL-10, TNF-a, IFN-c and IL-17A) and phosphorylation of Leucine-rich repeat kinase 2 (LRRK2). Serological cytokine titers of those inflammatory cytokines were more elevated in Ncf1-mutant than control mice, and were accompanied by systemic changes in functional subsets of monocytes, CD4+T and B cells. Conclusion: This suggests that an ineffective oxidative burst leads to severe chronic colitis through local accumulation of peroxynitrites, pro-inflammatory cytokines and lymphocytes and systemic immune deregulation similar to CGD. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10316/109646 http://hdl.handle.net/10316/109646 https://doi.org/10.1371/journal.pone.0097532 |
url |
http://hdl.handle.net/10316/109646 https://doi.org/10.1371/journal.pone.0097532 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
1932-6203 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Public Library of Science |
publisher.none.fl_str_mv |
Public Library of Science |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
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RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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