title: Resveratrol inhibits IL-1 beta-induced stimulation of caspase-3 and cleavage of PARP in human articular chondrocytes in vitro.
abstract: Resveratrol is a polyphenolic phytoalexin that is present in various fruits, in the skin of red grapes and peanuts. Recent studies have shown that resveratrol exhibits potent antioxidant properties and is able to exert anti-inflammatory and anti-catabolic properties in several cell types. The pro-inflammatory cytokine interleukin-1beta (IL-1beta) plays a pivotal role in the pathogenesis of osteoarthritis (OA) in humans and animals. In this article we investigated whether resveratrol is able to block the effects of IL-1beta, specifically the activation of caspase-3 and subsequent cleavage of poly (ADP-ribose) polymerase (PARP) in human articular chondrocytes. Cultures of human chondrocytes were prestimulated with 10 ng/mL IL-1beta for 1, 12, and 24 h before being co-treated with IL-1beta and 100 microM resveratrol or 50 microM of the caspase inhibitor Z-DEVD-FMK for 1, 12, and 24 h, respectively in vitro. Resveratrol significantly reduced the IL-1beta-induced inhibition of expression of cartilage-specific collagen type II and signal transduction receptor beta1-integrin in a time-dependent manner. Incubation of chondrocytes with IL-1beta resulted in the activation of caspase-3 and PARP cleavage. These effects were abolished through co-treatment with resveratrol. Furthermore, co-treatment of IL-1beta-stimulated cells with the caspase inhibitor Z-DEVD-FMK blocked activation of caspase-3 and PARP cleavage, suggesting that this process is a caspase-dependent pathway. In summary, our results confirm that resveratrol is an effective inhibitor of chondrocyte apoptosis in vitro. These findings suggest that this dietary polyphenolic compound may have future applications in the nutraceutical-based therapy of human and animal OA.
authors.affiliation: Institute of Anatomy, Musculoskeletal Research Group, Ludwig-Maximilian-University Munich, Pettenkoferstrasse 11, D-80336 Munich. mehdi.shakibaei@med.uni-muenchen.de
authors.forename: Mehdi
authors.initials: M
authors.lastname: Shakibaei
authors.forename: Thilo
authors.initials: T
authors.lastname: John
authors.forename: Claudia
authors.initials: C
authors.lastname: Seifarth
authors.forename: Ali
authors.initials: A
authors.lastname: Mobasheri
mesh_terms: D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000494:pharmacology*; D000975:Antioxidants / Q000494:pharmacology*; D002358:Cartilage, Articular / Q000166:cytology / Q000187:drug effects / Q000201:enzymology; D053148:Caspase 3 / Q000378:metabolism; D061945:Caspase Inhibitors; D002478:Cells, Cultured; D019902:Chondrocytes / Q000187:drug effects* / Q000201:enzymology; D024043:Collagen Type II / Q000037:antagonists & inhibitors / Q000502:physiology; D004789:Enzyme Activation / Q000187:drug effects; D006801:Humans; D006868:Hydrolysis / Q000187:drug effects; D053583:Interleukin-1beta / Q000037:antagonists & inhibitors* / Q000502:physiology; D000071137:Poly (ADP-Ribose) Polymerase-1; D000067856:Poly(ADP-ribose) Polymerase Inhibitors; D011065:Poly(ADP-ribose) Polymerases / Q000378:metabolism; D000077185:Resveratrol; D013267:Stilbenes / Q000494:pharmacology*
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; D000975:Antioxidants; D061945:Caspase Inhibitors; D024043:Collagen Type II; D053583:Interleukin-1beta; D000067856:Poly(ADP-ribose) Polymerase Inhibitors; D013267:Stilbenes; C499320:PARP1 protein, human; D000071137:Poly (ADP-Ribose) Polymerase-1; D011065:Poly(ADP-ribose) Polymerases; D053148:Caspase 3; D000077185:Resveratrol