Interleukin 20

Interleukin 20

Interleukin 20
Available structures
PDB Ortholog search: PDBe, RCSB
Symbols  ; IL-20; IL10D; ZCYTO10
External IDs GeneCards:
Species Human Mouse
RefSeq (mRNA)
RefSeq (protein)
Location (UCSC)
PubMed search

Interleukin 20 is a protein that in humans is encoded by the IL20 gene.[1]


The protein encoded by this gene is a cytokine structurally related to interleukin 10 (IL-10). This cytokine has been shown to transduce its signal through signal transducer and activator of transcription 3 (STAT3) in keratinocytes. A specific receptor for this cytokine is found to be expressed in skin and upregulated dramatically in psoriatic skin, suggesting a role for this protein in epidermal function and psoriasis.[1]

Interleukin-20 (IL-20) is a protein belonging to the IL-10 family of cytokines. IL-20 is produced by activated keratinocytes and monocytes and transmits an intracellular signal through two distinct cell-surface receptor complexes on keratinocytes and other epithelial cells. IL-20 regulates proliferation and differentiation of keratinocytes during inflammation, particularly inflammation associated with the skin. In addition, IL-20 also causes cell expansion of multipotential hematopoietic progenitor cells.[2]

Anti IL-20

Anti-IL-20 monoclonal antibodies have been researched as clinical candidates for the treatment or prevention of psoriasis, rheumatoid arthritis, atherosclerosis, and stroke.[3]


  1. ^ a b "Entrez Gene: Interleukin 20". 
  2. ^ Rich BE, Kupper TS (August 2006). "Interleukin 20". Anti-Inflammatory & Anti-Allergy Agents in Medicinal Chemistry 5 (3): 243–250.  
  3. ^ Hsu, YH; Chen, WY; Chan, CH; Wu first4=CH; Sun, ZJ=; Chang first6=MS (29 Aug 2011). "Anti-IL-20 monoclonal antibody inhibits the differentiation of osteoclasts and protects against osteoporotic bone loss.". J Exp Med. 208 (9): 1849–61.  

This article incorporates text from the United States National Library of Medicine, which is in the public domain.