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Citrullinated vimentin as an important antigen in immune complexes from synovial fluid of rheumatoid arthritis patients with antibodies against citrullinated proteins

Katleen Van Steendam, Kelly Tilleman UGent, Marlies De Ceuleneer, Filip De Keyser UGent, Dirk Elewaut UGent and Dieter Deforce UGent (2010) ARTHRITIS RESEARCH & THERAPY. 12(4).
abstract
Introduction: Rheumatoid arthritis (RA) is an inflammatory disease, which results in destruction of the joint. The presence of immune complexes (IC) in serum and synovial fluid of RA patients might contribute to this articular damage through different mechanisms, such as complement activation. Therefore, identification of the antigens from these IC is important to gain more insight into the pathogenesis of RA. Since RA patients have antibodies against citrullinated proteins (ACPA) in their serum and synovial fluid (SF) and since elevated levels of citrullinated proteins are detected in the joints of RA patients, citrullinated antigens are possibly present in IC from RA patients. Methods: IC from serum of healthy persons, serum of RA patients and IC from synovial fluid of RA patients and Spondyloarthropathy (SpA) patients were isolated by immunoprecipitation. Identification of the antigens was performed by SDS-PAGE, mass spectrometry and immunodetection. The presence of citrullinated proteins was evaluated by anti-modified citrulline (AMC) staining. Results: Circulating IC in the serum of RA patients and healthy controls contain fibrinogen beta and fibronectin, both in a non-citrullinated form. Additionally, in IC isolated from RA SF, fibrinogen. and vimentin were identified as well. More importantly, vimentin and a minor portion of fibrinogen beta were found to be citrullinated in the isolated complexes. Moreover these citrullinated antigens were only found in ACPA+ patients. No citrullinated antigens were found in IC from SF of SpA patients. Conclusions: Citrullinated fibrinogen beta and citrullinated vimentin were found in IC from SF of ACPA+ RA patients, while no citrullinated antigens were found in IC from SF of ACPA-RA patients or SpA patients or in IC from serum of RA patients or healthy volunteers. The identification of citrullinated vimentin as a prominent citrullinated antigen in IC from SF of ACPA+ RA patients strengthens the hypothesis that citrullinated vimentin plays an important role in the pathogenesis of RA.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
PROGRESSION, FIBRONECTIN, INDUCTION, CRITERIA, JOINTS, CELLS, SERUM, CLASSIFICATION
journal title
ARTHRITIS RESEARCH & THERAPY
Arthritis Res. Ther.
volume
12
issue
4
article number
R132
pages
10 pages
Web of Science type
Article
Web of Science id
000283841500007
ISSN
1478-6362
DOI
10.1186/ar3070
language
English
UGent publication?
yes
classification
A1
copyright statement
I have retained and own the full copyright for this publication
id
1094811
handle
http://hdl.handle.net/1854/LU-1094811
date created
2011-01-06 09:55:19
date last changed
2016-12-21 15:42:38
@article{1094811,
  abstract     = {Introduction: Rheumatoid arthritis (RA) is an inflammatory disease, which results in destruction of the joint. The presence of immune complexes (IC) in serum and synovial fluid of RA patients might contribute to this articular damage through different mechanisms, such as complement activation. Therefore, identification of the antigens from these IC is important to gain more insight into the pathogenesis of RA. Since RA patients have antibodies against citrullinated proteins (ACPA) in their serum and synovial fluid (SF) and since elevated levels of citrullinated proteins are detected in the joints of RA patients, citrullinated antigens are possibly present in IC from RA patients.
Methods: IC from serum of healthy persons, serum of RA patients and IC from synovial fluid of RA patients and Spondyloarthropathy (SpA) patients were isolated by immunoprecipitation. Identification of the antigens was performed by SDS-PAGE, mass spectrometry and immunodetection. The presence of citrullinated proteins was evaluated by anti-modified citrulline (AMC) staining.
Results: Circulating IC in the serum of RA patients and healthy controls contain fibrinogen beta and fibronectin, both in a non-citrullinated form. Additionally, in IC isolated from RA SF, fibrinogen. and vimentin were identified as well. More importantly, vimentin and a minor portion of fibrinogen beta were found to be citrullinated in the isolated complexes. Moreover these citrullinated antigens were only found in ACPA+ patients. No citrullinated antigens were found in IC from SF of SpA patients.
Conclusions: Citrullinated fibrinogen beta and citrullinated vimentin were found in IC from SF of ACPA+ RA patients, while no citrullinated antigens were found in IC from SF of ACPA-RA patients or SpA patients or in IC from serum of RA patients or healthy volunteers. The identification of citrullinated vimentin as a prominent citrullinated antigen in IC from SF of ACPA+ RA patients strengthens the hypothesis that citrullinated vimentin plays an important role in the pathogenesis of RA.},
  articleno    = {R132},
  author       = {Van Steendam, Katleen and Tilleman, Kelly and De Ceuleneer, Marlies and De Keyser, Filip and Elewaut, Dirk and Deforce, Dieter},
  issn         = {1478-6362},
  journal      = {ARTHRITIS RESEARCH \& THERAPY},
  keyword      = {PROGRESSION,FIBRONECTIN,INDUCTION,CRITERIA,JOINTS,CELLS,SERUM,CLASSIFICATION},
  language     = {eng},
  number       = {4},
  pages        = {10},
  title        = {Citrullinated vimentin as an important antigen in immune complexes from synovial fluid of rheumatoid arthritis patients with antibodies against citrullinated proteins},
  url          = {http://dx.doi.org/10.1186/ar3070},
  volume       = {12},
  year         = {2010},
}

Chicago
Van Steendam, Katleen, Kelly Tilleman, Marlies De Ceuleneer, Filip De Keyser, Dirk Elewaut, and Dieter Deforce. 2010. “Citrullinated Vimentin as an Important Antigen in Immune Complexes from Synovial Fluid of Rheumatoid Arthritis Patients with Antibodies Against Citrullinated Proteins.” Arthritis Research & Therapy 12 (4).
APA
Van Steendam, K., Tilleman, K., De Ceuleneer, M., De Keyser, F., Elewaut, D., & Deforce, D. (2010). Citrullinated vimentin as an important antigen in immune complexes from synovial fluid of rheumatoid arthritis patients with antibodies against citrullinated proteins. ARTHRITIS RESEARCH & THERAPY, 12(4).
Vancouver
1.
Van Steendam K, Tilleman K, De Ceuleneer M, De Keyser F, Elewaut D, Deforce D. Citrullinated vimentin as an important antigen in immune complexes from synovial fluid of rheumatoid arthritis patients with antibodies against citrullinated proteins. ARTHRITIS RESEARCH & THERAPY. 2010;12(4).
MLA
Van Steendam, Katleen, Kelly Tilleman, Marlies De Ceuleneer, et al. “Citrullinated Vimentin as an Important Antigen in Immune Complexes from Synovial Fluid of Rheumatoid Arthritis Patients with Antibodies Against Citrullinated Proteins.” ARTHRITIS RESEARCH & THERAPY 12.4 (2010): n. pag. Print.