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Synthesis of a Novel Thiazolidinedione and Evaluation of Its Modulatory Effect on IFN- γ , IL-6, IL-17A, and IL-22 Production in PBMCs from Rheumatoid Arthritis Patients

2013; Hindawi Publishing Corporation; Volume: 2013; Linguagem: Inglês

10.1155/2013/926060

2314-6141

Laurindo Ferreira da Rocha, Moacyr Jesus Barreto de Melo Rêgo, Mariana Brayner Cavalcanti, Michelly Cristiny Pereira, Marina Galdino da Rocha Pitta, Priscilla Stela Santana de Oliveira, Sayonara Maria Calado Gonçalves, Ângela Luzia Branco Pinto Duarte, Maria do Carmo Alves de Lima, Ivan da Rocha Pitta, Maíra Galdino da Rocha Pitta,

Inflammatory mediators and NSAID effects

Rheumatoid arthritis (RA) is an autoimmune disease frequently characterized by chronic synovitis of multiple joints. The pathogenesis of RA is complex and involves many proinflammatory cytokines as Th17 related ones. PPAR γ is a nuclear receptor activator that represses proinflammatory gene expression. Thus, this work aimed to synthetize a new thiazolidinedione (TZD) analogue based on a well-known anti-inflammatory and PPAR γ agonist activity of this ring and evaluate its anti-inflammatory activity. After chemical structure confirmation, the compound named 5-(5-bromo-2-methoxy-benzylidene)-3-(2-nitro-benzyl)-thiazolidine-2,4-dione TM17 was submitted to cytokine releasing inhibition and PPAR γ genetic modulation assays. The new compound showed no toxicity on human and murine cells, decreasing IL-6 secretion by murine splenocytes and reducing IL-17A, IL-22, and IFN- γ expression in peripheral blood mononuclear cells from patients with RA. TM17 was more efficient in modulating the mRNA expression of PPAR γ than its well-used TZD agonist rosiglitazone. Surprisingly, TM17 was efficient on IL-17A and IFN- γ reduction, like the positive control methylprednisolone, and presented a better effect on IL-22 levels. In conclusion, PBMCs obtained from RA patients under TM17 treatment present a significant reduction in IL-17A, IL-22, and IFN- γ levels, but not IL-6 when compared with nontreated cells, as well as increase PPAR γ mRNA expression in absence of stimulus addressing it as a promising molecule in RA treatment.