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The role of S100A11 protein (calgizzarin) in rheumatoid arthritis pathogenesis
Navrátilová, Adéla ; Andrés Cerezo, Lucie (advisor) ; Štěpánek, Ondřej (referee)
Rheumatoid arthritis (RA) is a systemic connective tissue autoimmune disease which is characterized by persistent inflammation of the synovial tissue, joint destruction and visceral organs and vessels damage. The RA joint environment contains pro-inflammatory molecules and immune cells. Small calcium-binding proteins of the S100 family are also known to be involved in the inflammatory process of RA, and some of them have been studied in our laboratory. One member of this family, S100A11 (calgizzarin), is well described in oncological diseases but its role in autoimmune diseases has not yet been described. Neutrophil extracellular traps (NETs), which are a potential source of autoantigens and immunoactive molecules, also contribute to the chronic inflammatory process in RA. The aim of our study was to investigate S100A11 with the focus on its role in the processes of inflammation and tissue destruction and to assess its possible association with NETs. Using in vitro experiments and molecular methods (reverse transcription, quantitative polymerase chain reaction (qPCR) and multiplex assay) we have shown that S100A11 exerts its pro-inflammatory effect on mononuclear cells via toll-like receptor (TLR)-4, however there was not any significant effect of S100A11 on the production of pro-inflammatory...
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