PtpA and PknG Proteins Secreted by Mycobacterium avium subsp. paratuberculosis are Recognized by Sera from Patients with Rheumatoid Arthritis: A Case–Control Study

PtpA and PknG Proteins Secreted by Mycobacterium avium subsp. paratuberculosis are Recognized by Sera from Patients with Rheumatoid Arthritis: A Case–Control Study

Marco Bo,1 Gian Luca Erre,2 Horacio Bach,3 Yael N Slavin,3 Piera Angela Manchia,4 Giuseppe Passiu,2 Leonardo A Sechi1 1Department of Biomedical Sciences, Section of Microbiology and Virology, University of Sassari, Sassari 07100, Italy; 2Department of Clinical and Experimental Medicine, Azienda Ospe...

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Autores principales: Bo M, Erre GL, Bach H, Slavin YN, Manchia PA, Passiu G, Sechi LA
Formato: article
Lenguaje:EN
Publicado: Dove Medical Press 2019
Materias:
mycobacterium avium subsp. paratuberculosis
ptpa
pkng
virulence factors
rheumatoid arthritis
immune response.
Pathology
RB1-214
Therapeutics. Pharmacology
RM1-950
Acceso en línea:https://doaj.org/article/99710f7970de40049368aa69e769b030
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spelling oai:doaj.org-article:99710f7970de40049368aa69e769b0302021-12-02T07:57:27ZPtpA and PknG Proteins Secreted by Mycobacterium avium subsp. paratuberculosis are Recognized by Sera from Patients with Rheumatoid Arthritis: A Case–Control Study1178-7031https://doaj.org/article/99710f7970de40049368aa69e769b0302019-12-01T00:00:00Zhttps://www.dovepress.com/ptpa-and-pkng-proteins-secreted-by-mycobacterium-avium-subsp-paratuber-peer-reviewed-article-JIRhttps://doaj.org/toc/1178-7031Marco Bo,1 Gian Luca Erre,2 Horacio Bach,3 Yael N Slavin,3 Piera Angela Manchia,4 Giuseppe Passiu,2 Leonardo A Sechi1 1Department of Biomedical Sciences, Section of Microbiology and Virology, University of Sassari, Sassari 07100, Italy; 2Department of Clinical and Experimental Medicine, Azienda Ospedaliero-Universitaria di Sassari, UOC di Reumatologia, Sassari 07100, Italy; 3Division of Infectious Diseases, Faculty of Medicine, The University of British Columbia, Vancouver, BC V6H 3Z6, Canada; 4Centro Trasfusionale, AOU Sassari, Sassari, ItalyCorrespondence: Leonardo A SechiDepartment of Biomedical Sciences, University of Sassari, Viale San Pietro 43 B, Sassari 07100, ItalyTel +39 079228462Email sechila@uniss.itPurpose: Rheumatoid arthritis (RA) can result from complex interactions between the affected person’s genetic background and environment. Viral and bacterial infections may play a pathogenetic role in RA through different mechanisms of action. We aimed to evaluate the presence of antibodies (Abs) directed against two proteins of Mycobacterium avium subsp. paratuberculosis (MAP) in sera of RA subjects, which are crucial for the survival of the pathogen within macrophages. Moreover, we analyzed the correlation of immune response to both proteins with the following homologous peptides: BOLF1305–320, MAP_402718–32 and IRF5424–434 to understand how the synergic role of Epstein–Barr virus (EBV) and MAP infection in genetically predisposed subjects may lead to a possible deregulation of interferon regulatory factor 5 (IRF5).Materials and methods: The presence of Abs against protein tyrosine phosphatase A (PtpA) and protein kinase G (PknG) in sera from Sardinian RA patients (n=84) and healthy volunteers (HCs, n=79) was tested by indirect ELISA.Results: RA sera showed a remarkably high frequency of reactivity against PtpA in comparison to HCs (48.8% vs 7.6%; p<0.001) and lower but statistically significant responses towards PknG (27.4% vs 10.1%; p=0.0054). We found a significant linear correlation between the number of swollen joints and the concentrations of antibodies against PtpA (p=0.018). Furthermore, a significant bivariate correlation between PtpA and MAP MAP_402718–32 peptide has been found, suggesting that MAP infection may induce a secondary immune response through cross-reaction with IRF5 (R2=0.5).Conclusion: PtpA and PknG are strongly recognized in RA which supports the hypothesis that MAP infection may be involved in the pathogenesis of RA.Keywords: Mycobacterium avium subsp. paratuberculosis, PtpA, PknG, virulence factors, rheumatoid arthritis, immune responseBo MErre GLBach HSlavin YNManchia PAPassiu GSechi LADove Medical Pressarticlemycobacterium avium subsp. paratuberculosisptpapkngvirulence factorsrheumatoid arthritisimmune response.PathologyRB1-214Therapeutics. PharmacologyRM1-950ENJournal of Inflammation Research, Vol Volume 12, Pp 301-308 (2019)
institution DOAJ
collection DOAJ
language EN
topic mycobacterium avium subsp. paratuberculosis
ptpa
pkng
virulence factors
rheumatoid arthritis
immune response.
Pathology
RB1-214
Therapeutics. Pharmacology
RM1-950
spellingShingle mycobacterium avium subsp. paratuberculosis
ptpa
pkng
virulence factors
rheumatoid arthritis
immune response.
Pathology
RB1-214
Therapeutics. Pharmacology
RM1-950
Bo M
Erre GL
Bach H
Slavin YN
Manchia PA
Passiu G
Sechi LA
PtpA and PknG Proteins Secreted by Mycobacterium avium subsp. paratuberculosis are Recognized by Sera from Patients with Rheumatoid Arthritis: A Case–Control Study
description Marco Bo,1 Gian Luca Erre,2 Horacio Bach,3 Yael N Slavin,3 Piera Angela Manchia,4 Giuseppe Passiu,2 Leonardo A Sechi1 1Department of Biomedical Sciences, Section of Microbiology and Virology, University of Sassari, Sassari 07100, Italy; 2Department of Clinical and Experimental Medicine, Azienda Ospedaliero-Universitaria di Sassari, UOC di Reumatologia, Sassari 07100, Italy; 3Division of Infectious Diseases, Faculty of Medicine, The University of British Columbia, Vancouver, BC V6H 3Z6, Canada; 4Centro Trasfusionale, AOU Sassari, Sassari, ItalyCorrespondence: Leonardo A SechiDepartment of Biomedical Sciences, University of Sassari, Viale San Pietro 43 B, Sassari 07100, ItalyTel +39 079228462Email sechila@uniss.itPurpose: Rheumatoid arthritis (RA) can result from complex interactions between the affected person’s genetic background and environment. Viral and bacterial infections may play a pathogenetic role in RA through different mechanisms of action. We aimed to evaluate the presence of antibodies (Abs) directed against two proteins of Mycobacterium avium subsp. paratuberculosis (MAP) in sera of RA subjects, which are crucial for the survival of the pathogen within macrophages. Moreover, we analyzed the correlation of immune response to both proteins with the following homologous peptides: BOLF1305–320, MAP_402718–32 and IRF5424–434 to understand how the synergic role of Epstein–Barr virus (EBV) and MAP infection in genetically predisposed subjects may lead to a possible deregulation of interferon regulatory factor 5 (IRF5).Materials and methods: The presence of Abs against protein tyrosine phosphatase A (PtpA) and protein kinase G (PknG) in sera from Sardinian RA patients (n=84) and healthy volunteers (HCs, n=79) was tested by indirect ELISA.Results: RA sera showed a remarkably high frequency of reactivity against PtpA in comparison to HCs (48.8% vs 7.6%; p<0.001) and lower but statistically significant responses towards PknG (27.4% vs 10.1%; p=0.0054). We found a significant linear correlation between the number of swollen joints and the concentrations of antibodies against PtpA (p=0.018). Furthermore, a significant bivariate correlation between PtpA and MAP MAP_402718–32 peptide has been found, suggesting that MAP infection may induce a secondary immune response through cross-reaction with IRF5 (R2=0.5).Conclusion: PtpA and PknG are strongly recognized in RA which supports the hypothesis that MAP infection may be involved in the pathogenesis of RA.Keywords: Mycobacterium avium subsp. paratuberculosis, PtpA, PknG, virulence factors, rheumatoid arthritis, immune response
format article
author Bo M
Erre GL
Bach H
Slavin YN
Manchia PA
Passiu G
Sechi LA
author_facet Bo M
Erre GL
Bach H
Slavin YN
Manchia PA
Passiu G
Sechi LA
author_sort Bo M
title PtpA and PknG Proteins Secreted by Mycobacterium avium subsp. paratuberculosis are Recognized by Sera from Patients with Rheumatoid Arthritis: A Case–Control Study
title_short PtpA and PknG Proteins Secreted by Mycobacterium avium subsp. paratuberculosis are Recognized by Sera from Patients with Rheumatoid Arthritis: A Case–Control Study
title_full PtpA and PknG Proteins Secreted by Mycobacterium avium subsp. paratuberculosis are Recognized by Sera from Patients with Rheumatoid Arthritis: A Case–Control Study
title_fullStr PtpA and PknG Proteins Secreted by Mycobacterium avium subsp. paratuberculosis are Recognized by Sera from Patients with Rheumatoid Arthritis: A Case–Control Study
title_full_unstemmed PtpA and PknG Proteins Secreted by Mycobacterium avium subsp. paratuberculosis are Recognized by Sera from Patients with Rheumatoid Arthritis: A Case–Control Study
title_sort ptpa and pkng proteins secreted by mycobacterium avium subsp. paratuberculosis are recognized by sera from patients with rheumatoid arthritis: a case–control study
publisher Dove Medical Press
publishDate 2019
url https://doaj.org/article/99710f7970de40049368aa69e769b030
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