Article (Scientific journals)
CEMIP (KIAA1199) induces a fibrosis-like process in osteoarthritic chondrocytes
DEROYER, Céline; CHARLIER, Edith; NEUVILLE, Sophie et al.
2019In Cell Death and Disease
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Keywords :
Osteoarthritis; Fibrosis; Chondrocytes
Abstract :
[en] CEMIP (for “Cell migration-inducing protein” also called KIAA1199 and Hybid for “Hyaluronan-binding protein”) expression is increased in cancers and described as a regulator of cell survival, growth and invasion. In rheumatoid arthritis, CEMIP is referred to as an angiogenic marker and participates in hyaluronic acid degradation. In this study, CEMIP expression is investigated in healthy and osteoarthritis (OA) cartilage from human and mouse. Its role in OA physiopathology is deciphered, specifically in chondrocytes proliferation and dedifferentiation and in the extracellular matrix remodeling. To this end, CEMIP, αSMA and types I and III collagen expressions were assessed in human OA and non-OA cartilage. CEMIP expression was also investigated in a mouse OA model. CEMIP expression was studied in vitro using a chondrocyte dedifferentiation model. High-throughput RNA sequencing was performed on chondrocytes after CEMIP silencing. Results showed that CEMIP was overexpressed in human and murine OA cartilage and along chondrocytes dedifferentiation. Most of genes deregulated in CEMIP-depleted cells were involved in cartilage turnover (e.g., collagens), mesenchymal transition and fibrosis. CEMIP regulated β-catenin protein level. Moreover, CEMIP was essential for chondrocytes proliferation and promoted αSMA expression, a fibrosis marker, and TGFβ signaling towards the p-Smad2/3 (Alk5/PAI-1) pathway. Interestingly, CEMIP was induced by the pSmad1/5 (Alk1) pathway. αSMA and type III collagen expressions were overexpressed in human OA cartilage and along chondrocytes dedifferentiation. Finally, CEMIP was co-expressed in situ with αSMA in all OA cartilage layers. In conclusion, CEMIP was sharply overexpressed in human and mouse OA cartilage and along chondrocytes dedifferentiation. CEMIP-regulated transdifferentiation of chondrocytes into “chondro-myo-fibroblasts” expressing α-SMA and type III collagen, two fibrosis markers. Moreover, these “chondro-myo-fibroblasts” were found in OA cartilage but not in healthy cartilage.
Disciplines :
Rheumatology
Author, co-author :
DEROYER, Céline  ;  Centre Hospitalier Universitaire de Liège - CHU > Département de médecine interne > Service de rhumatologie
CHARLIER, Edith ;  Centre Hospitalier Universitaire de Liège - CHU > Département de médecine interne > Service de rhumatologie
NEUVILLE, Sophie ;  Centre Hospitalier Universitaire de Liège - CHU > Département de médecine interne > Service de rhumatologie
MALAISE, Olivier ;  Centre Hospitalier Universitaire de Liège - CHU > Département de médecine interne > Service de rhumatologie
GILLET, Philippe ;  Centre Hospitalier Universitaire de Liège - CHU > Département de chirurgie > Service de chirurgie de l'appareil locomoteur
KURTH, William  ;  Centre Hospitalier Universitaire de Liège - CHU > Département de chirurgie > Service de chirurgie de l'appareil locomoteur
Chariot, Alain ;  Université de Liège - ULiège > Département de pharmacie > Chimie médicale
MALAISE, Michel ;  Centre Hospitalier Universitaire de Liège - CHU > Département de médecine interne > Service de rhumatologie
DE SENY, Dominique ;  Centre Hospitalier Universitaire de Liège - CHU > Département de médecine interne > Service de rhumatologie
Language :
English
Title :
CEMIP (KIAA1199) induces a fibrosis-like process in osteoarthritic chondrocytes
Publication date :
04 February 2019
Journal title :
Cell Death and Disease
eISSN :
2041-4889
Publisher :
Nature Publishing Group, United Kingdom
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 08 February 2019

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