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Interleukin-6 (IL-6) binds to IL-6 receptor (IL-6R) subunit, related to autoimmune diseases and cytokine storm in COVID-19. In this study we performed Systematic Evolution of Ligands by Exponential enrichment (SELEX) and identified a novel RNA aptamer. This RNA aptamer not only bound to IL-6R with a dissociation constant of 200 nM, but also inhibited the interaction of IL-6R with IL-6.
Keywords: Interleukin-6, Interleukin-6 receptor, SELEX, Aptamer, In vitro selection
