113.239.233/~hiwind/MHC_peptide_TCR/index.php We would like to thank for Dr Johnathan W. Yewdell, Dr Jack Bennink and Dr John E. Coligan for providing RMA, RMA-S and RMA-S-Kd cells for peptide–MHC class I binding experiments. “
“Interleukin-17F (IL-17F) is a novel proinflammatory cytokine. AZD4547 in vivo IL-17F gene is an excellent candidate for chronic inflammatory disease. We investigated the association between rheumatoid arthritis (RA) and His161Arg (7488A/G; rs763780) and Glu126Gly (7383A/G; rs2397084)

polymorphism of IL-17F gene. The gene polymorphisms in 220 Polish patients with RA and 106 healthy subjects were amplified by polymerase chain reaction with restriction endonuclease mapping. Overall, the polymorphisms of the IL-17F gene were not correlated with susceptibility to RA in

Polish population. However, the IL-17F His161Arg variant was associated with parameters of disease activity, such as number of tender joints, HAQ score or DAS-28-CRP. Moreover, our findings have shown that Glu126Gly IL-17F gene polymorphism may be correlated with longer disease duration in patients with RA. Our results for the first time showed the relationship between IL-17F gene polymorphisms and severity of RA. Rheumatoid arthritis (RA) is a chronic autoimmune disease characterized by destruction of articular cartilage, progressively destructive joint inflammation and synovial hyperplasia [1]. The disease is a complex aetiology, including variability in disease severity or progression, a wide spectrum of clinical manifestations and response for the treatment Nutlin-3 solubility dmso [2]. These heterogeneous phenotypes suggest that in the pathogenesis of RA are involved both environmental and genetics factors, where the genetic components of RA have been determined with heritability estimates of 50–60% [3, 4]. As the identification of human leucocyte

antigen (HLA) alleles, specifically HLA-DR4 and HLA-DR1, as the first RA susceptibility Suplatast tosilate gene [5–7], a number of studies identified several other RA susceptibility and severity genes. Probably, in the pathogenesis of RA, the other genes play a key role, which similarly as HLA gene take part in detecting bacterial and viruses’ products [8, 9]. Interestingly, the majority of the identified genetic factors conferred risk to ACPA-positive RA (PTPN22, C5/TRAF1, CTLA4, STAT4), whereas two genetic factors may be restricted to ACPA-negative RA (HLA-DR3, IRF5) [10]. IL-17 (IL-17A or CTLA8) is a proinflammatory cytokine that is secreted as a homodimeric polypeptide by the activated T cells with the phenotype of CD4 + CD45RO human memory T cells or mouse TCRα + CD4-CD8-thymocytes [1, 11, 12]. IL-17A was the first discovered member of the IL-17 family in 1993 by Rouvier et al. [13]. Furthermore, five another members (IL-17B–IL-17F) of this family have been discovered by large-scale sequencing of the human genome [1, 11].