Interleukin-6 subfamily cytokines and rheumatoid arthritis: role of antagonists

Jalal A. Jazayeri, Graeme J. Carroll, Ann B. Vernallis

Research output: Contribution to journalArticlepeer-review


Many cytokines have been implicated in the inflammatory pathways that characterize rheumatoid arthritis (RA) and related inflammatory diseases of the joints. These include members of the interleukin-6 (IL-6) family of cytokines, several of which have been detected in excess in the synovial fluid from RA patients. What makes the IL-6 group of cytokines a family is their common use of the glycoprotein 130 (gp130) receptor subunit, to which they bind with different affinities. Several strategies have been developed to block the pro-inflammatory activities of IL-6 subfamily cytokines. These include the application of monoclonal antibodies, the creation of mutant form(s) of the cytokine with enhanced binding affinity to gp130 receptor and the generation of antagonists by selective mutagenesis of the specific cytokine/gp130 receptor-binding site(s). The rationale for the use of anti-cytokine therapy in inflammatory joint diseases is based on evidence from studies in vitro and in vivo, which implicate major cytokines such as interleukin-1 (IL-1), tumour necrosis factor (TNF)-alpha and IL-6 in RA pathogenesis. In particular, IL-6 subfamily antagonists have a wide range of potential therapeutic and research applications. This review focuses on the role of some of the IL-6 subfamily cytokines in the pathogenesis of the inflammatory diseases of the joints (IJDs), such as RA. In addition, an overview of the recently developed antagonists will be discussed.
Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalInternational Immunopharmacology
Issue number1
Early online date3 Oct 2009
Publication statusPublished - Jan 2010


  • animals
  • monoclonal antibodies
  • rheumatoid arthritis
  • binding sites
  • drug design
  • glycoproteins
  • humans
  • immunotherapy
  • interleukin-6
  • site-directed mutagenesis
  • recombinant fusion proteins
  • synovial fluid


Dive into the research topics of 'Interleukin-6 subfamily cytokines and rheumatoid arthritis: role of antagonists'. Together they form a unique fingerprint.

Cite this