Article (Scientific journals)
Genistein induces adipogenesis but inhibits leptin induction in human synovial fibroblasts
Relic, Biserka; Zeddou, Mustapha; Desoroux, Aline et al.
2009In Laboratory Investigation, 89 (7), p. 811-822
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Keywords :
adipogenesis; genistein; leptin; peroxisome proliferator-activated receptor-y; rheumatoid arthritis; synovial fibroblasts
Abstract :
[en] It was shown recently that synovial fibroblast transformation into adipocytes reduced the expression of interleukin-6 (IL-6) and IL-8. However, the synovial fibroblast adipogenesis was inhibited in inflammatory conditions induced by the tumor necrosis factor-alpha (TNF-alpha). Furthermore, adipogenesis is often accompanied by leptin production, a proinflammatory adipokine in rheumatic diseases. In this study, we tested the phytohormone genistein for adipogenic and anti-inflammatory properties on human synovial fibroblasts. Results showed that genistein was able to transform synovial fibroblasts into adipocytes that expressed perilipin-A and produced adiponectin, but not leptin. Furthermore, genistein enhanced glucocorticoid-mediated synovial fibroblast adipogenesis and, in parallel, downregulated glucocorticoid-induced leptin and leptin receptor. Endogenous and TNF-alpha-induced expressions of IL-6, IL-8, p38, p65 and C/EBP-beta were also downregulated by genistein, showing its anti-inflammatory properties. Peroxisome proliferator- activated receptor-gamma (PPAR-gamma) agonist, rosiglitazone, had a synergic effect on genistein-induced whereas the non-active tyrosine kinase inhibitor, daidzein, had a significantly inferior adipogenic activity than genistein. The Janus kinase-2 tyrosine kinase inhibitor, AG 490, mimicked the anti-leptin effect of genistein. These results showed that genistein-induced adipogenesis involves PPAR-gamma induction and tyrosine kinase inhibition. In conclusion, genistein, alone or coupled with glucocorticoids, have both adipogenic and anti-inflammatory effects on synovial fibroblasts.
Disciplines :
Hematology
Author, co-author :
Relic, Biserka ;  Université de Liège - ULiège > Rhumatologie
Zeddou, Mustapha ;  Université de Liège - ULiège > Département des sciences cliniques > Rhumatologie
Desoroux, Aline ;  Université de Liège - ULiège > Rhumatologie
Beguin, Yves  ;  Université de Liège - ULiège > Département des sciences cliniques > Hématologie - Oncologie médicale
De Seny, Dominique ;  Université de Liège - ULiège > Rhumatologie
Malaise, Michel ;  Université de Liège - ULiège > Département des sciences cliniques > Rhumatologie
Language :
English
Title :
Genistein induces adipogenesis but inhibits leptin induction in human synovial fibroblasts
Publication date :
2009
Journal title :
Laboratory Investigation
ISSN :
0023-6837
eISSN :
1530-0307
Publisher :
Lippincott Williams & Wilkins, Hagerstown, United States - Maryland
Volume :
89
Issue :
7
Pages :
811-822
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 26 April 2011

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