Cited by 78Clusterin in disease pathologyRheumatoid Arthritis Research and TherapiesNatural Compounds in Disease Treatment

Characterization and functional consequences of underexpression of clusterin in rheumatoid arthritis

Devauchelle, Valérie, Essabbani, Abdellatif, De Pinieux, Gonzague, Germain, Stéphane, Tourneur, Léa, Mistou, Sylvie, Margottin-Goguet, Florence, Anract, Philippe +8 more·2006·The Journal of Immunology

Abstract

We previously compared by microarray analysis gene expression in rheumatoid arthritis (RA) and osteoarthritis (OA) tissues. Among the set of genes identified as a molecular signature of RA, clusterin (clu) was one of the most differentially expressed. In the present study we sought to assess the expression and the role of CLU (mRNA and protein) in the affected joints and in cultured fibroblast-like synoviocytes (FLS) and to determine its functional role. Quantitative RT-PCR, Northern blot, in situ hybridization, immunohistochemistry, and Western blot were used to specify and quantify the expression of CLU in ex vivo synovial tissue. In synovial tissue, the protein was predominantly expressed by synoviocytes and it was detected in synovial fluids. Both full-length and spliced isoform CLU mRNA levels of expression were lower in RA tissues compared with OA and healthy synovium. In synovium and in cultured FLS, the overexpression of CLU concerned all protein isoforms in OA whereas in RA, the intracellular forms of the protein were barely detectable. Transgenic overexpression of CLU in RA FLS promoted apoptosis within 24 h. We observed that CLU knockdown with small interfering RNA promoted IL-6 and IL-8 production. CLU interacted with phosphorylated IκBα. Differential expression of CLU by OA and RA FLS appeared to be an intrinsic property of the cells. Expression of intracellular isoforms of CLU is differentially regulated between OA and RA. We propose that in RA joints, high levels of extracellular CLU and low expression of intracellular CLU may enhance NF-κB activation and survival of the synoviocytes.

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Crossref · 10.4049/jimmunol.177.9.6471

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Authors
Devauchelle, V., Essabbani, A., De Pinieux, G., Germain, S., Tourneur, L., Mistou, S., Margottin-Goguet, F., Anract, P., Migaud, H., Le Nen, D., Lequerré, T., Saraux, A., Dougados, M., Breban, M., Fournier, C., & Chiocchia, G.
Affiliations
  • Institut Cochin, Département d’Immunologie , Paris ,
  • Centre National de la Recherche Scientifique (FR)
  • Service d’Anatomo-pathologie, Hôpital Cochin , Paris
  • INSERM Unité 36, Collège de France , Paris ,
  • Hôpital Cochin (FR)
  • Service d’Orthopédie Hôpital Roger Salengro , Lille ,
  • Service d’Orthopédie Hôpital La Cavale Blanche , Brest ,
  • INSERM Unité 519 , Rouen ,
  • Service de Rhumatologie, Hôpital La Cavale Blanche , Brest ,
Corresponding author
  • Essabbani, Abdellatif
  • Mistou, Sylvie
  • Dougados, Maxime
  • Fournier, Catherine
  • Chiocchia, Gilles
Venue
The Journal of Immunology
Published
2006-11-01
Volume
177
Issue
9
Pages
6471-6479
ISSN
  • 0022-1767 (ISSN-L)
  • 1550-6606
OpenAlex
W1950736399
Cited by
78
References
42
Citations by year
2025: 2 · 2024: 1 · 2023: 3 · 2022: 2 · 2021: 6 · 2020: 7 · 2019: 3 · 2018: 4 · 2016: 3 · 2015: 1 · 2014: 5 · 2013: 6 · 2012: 7
FWCI
2.57
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Immunology (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
Topics
  • Health Sciences › Medicine › Oncology › Clusterin in disease pathology
  • Health Sciences › Medicine › Rheumatology › Rheumatoid Arthritis Research and Therapies
  • Health Sciences › Medicine › Complementary and alternative medicine › Natural Compounds in Disease Treatment
Keywords
clusterin, rheumatoid arthritis, osteoarthritis, synoviocytes, synovium, gene expression, apoptosis, interleukin-6, interleukin-8, NF-κB activation, IκBα, transgenic overexpression, siRNA knockdown, synovial fluid
MeSH terms
Arthritis, Rheumatoid, Cell Survival, Cells, Cultured, Fibroblasts, Humans, Immunohistochemistry, Osteoarthritis, Phosphorylation, RNA, Messenger, Synovial Fluid, Synovial Membrane, Tumor Necrosis Factor-alpha, Interleukin-6, Interleukin-8, NF-kappa B, In Situ Hybridization, Transgenes, Reverse Transcriptase Polymerase Chain Reaction, Protein Transport, RNA, Small Interfering, Clusterin, I-kappa B Kinase

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