Interleukin 20 (IL-20) is a cytokine, which consists of other cytokines like IL-19, IL-20, IL-22, IL-22, IL-24, IL-26.
IL-20 has related structure to the IL-10 cytokine. It also transduces its signals through signal transducer and activator of transcription 3, also known as STAT3
in keratinocytes. The protein's function is suggested in the long-lasting autoimmune disease - psoriasis, and epidermal function.
Interleukin 20 is part of the Interleukin 10 family. IL-20 is produced by active most important cell type in the epidermis - keratinocytes, and monocytes, and transfers
intracellular signals between two different cell-surface receptor structures of epithelial cells, such as the keratinocytes.
This protein also manages the proliferation and differentiation of keratinocytes in inflammation and boosts the cells measurements of multipotential hematopoietic progenitor cells.