Potential Role of Fibroblast-Like Synoviocytes in Joint Damage Induced by Brucella abortus Infection through Production and Induction of Matrix Metalloproteinases
Open Access
- 1 September 2011
- journal article
- research article
- Published by American Society for Microbiology in Infection and Immunity
- Vol. 79 (9), 3619-3632
- https://doi.org/10.1128/iai.05408-11
Abstract
Arthritis is one of the most common complications of human brucellosis, but its pathogenic mechanisms have not been elucidated. Fibroblast-like synoviocytes (FLS) are known to be central mediators of joint damage in inflammatory arthritides through the production of matrix metalloproteinases (MMPs) that degrade collagen and of cytokines and chemokines that mediate the recruitment and activation of leukocytes. In this study we show thatBrucella abortusinfects and replicates in human FLS (SW982 cell line)in vitroand that infection results in the production of MMP-2 and proinflammatory mediators (interleukin-6 [IL-6], IL-8, monocyte chemotactic protein 1 [MCP-1], and granulocyte-macrophage colony-stimulating factor [GM-CSF]). Culture supernatants fromBrucella-infected FLS induced the migration of monocytes and neutrophilsin vitroand also induced these cells to secrete MMP-9 in a GM-CSF- and IL-6-dependent fashion, respectively. Reciprocally, culture supernatants fromBrucella-infected monocytes and neutrophils induced FLS to produce MMP-2 in a tumor necrosis factor alpha (TNF-α)-dependent fashion. The secretion of proinflammatory mediators and MMP-2 by FLS did not depend on bacterial viability, since it was also induced by heat-killedB. abortus(HKBA) and by a modelBrucellalipoprotein (L-Omp19). These responses were mediated by the recognition ofB. abortusantigens through Toll-like receptor 2. The intra-articular injection of HKBA or L-Omp19 into the knee joint of mice resulted in the local induction of the proinflammatory mediators MMP-2 and MMP-9 and in the generation of a mixed inflammatory infiltrate. These results suggest that FLS, and phagocytes recruited by them to the infection focus, may be involved in joint damage during brucellar arthritis through the production of MMPs and proinflammatory mediators.This publication has 66 references indexed in Scilit:
- Granulocyte-Macrophage Colony-Stimulating Factor- and Tumor Necrosis Factor Alpha-Mediated Matrix Metalloproteinase Production by Human Osteoblasts and Monocytes after Infection withBrucella abortusInfection and Immunity, 2011
- Brucella abortus Induces the Secretion of Proinflammatory Mediators from Glial Cells Leading to Astrocyte ApoptosisThe American Journal of Pathology, 2010
- A peripheral neuroimmune link: glutamate agonists upregulate NMDA NR1 receptor mRNA and protein, vimentin, TNF-α, and RANTES in cultured human synoviocytesAmerican Journal of Physiology-Regulatory, Integrative and Comparative Physiology, 2010
- Interaction of staphylococci with boneInternational Journal of Medical Microbiology, 2010
- Fibroblast‐like synoviocytes: key effector cells in rheumatoid arthritisImmunological Reviews, 2009
- Interleukin-6 Released from Fibroblasts Is Essential for Up-regulation of Matrix Metalloproteinase-1 Expression by U937 Macrophages in CocultureOnline Journal of Public Health Informatics, 2009
- Proinflammatory Response of Human Osteoblastic Cell Lines and Osteoblast-Monocyte Interaction upon Infection withBrucellasppInfection and Immunity, 2009
- BrucellosisThe New England Journal of Medicine, 2005
- Differential induction and regulation of matrix metalloproteinases in osteoarthritic tissue and fluid synovial fibroblastsOsteoarthritis and Cartilage, 2004
- A clinical and immunopathological study of Brucella abortus strain 19--induced arthritis in cattleVeterinary Record, 1980