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Interleukin

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Interleukin (IL) is a cytokine which functions in the immune system. IL deficiency results in autoimmune disease. IL families are denoted by numbers.

IL-1 is a group of 11 cytokines which regulate immune and inflammatory response. See Interleukin-1 beta.
IL-2 is a cytokine made by leukocytes. It is used in cancer therapy to boost the immune system.
IL-3 improves the body's natural response to disease by stimulating the differentiation of multipotent hematopoietic stem cells into myeloid or lymphoid progenitor cells.
IL-4 induces the differentiation of naive helper T cells (Th0) to Th2 cells.
IL-5 stimulates B cell growth and increases immunoglobulin secretion.
IL-6 is both a pro-inflammatory cytokine and anti-inflammatory myokine.
IL-7 is a cytokine important for B and T cells development.
IL-8 induces chemotaxis and phagocytosis.
IL-10 see Interleukin-10.
IL-11 involved in the stimulation of megakaryocyte maturation.
IL-12 induces the differentiation of naive helper T cells (Th0) to Th1 cells.
IL-13 induces the differentiation of naive helper T cells (Th0) to Th2 cells.
IL-15 see Interleukin-15.
IL-16 acts as chemoattractant, modulator of T cell activity and inhibitor of HIV replication.
IL-17 recruits monocytes and neutrophils to the site of inflammation.
IL-18 induces cell-mediated immunity following infection by microbial lipopolysaccharides.
IL-19 induces activation of the signal transducer and activator of STAT3.
IL-21 has potent effect on natural killer cells.
IL-22 stimulates inflammatory responses like S100 and defensin.
IL-23 induces activation of the signal transducer and activator of STAT4.
IL-28 has a role in the immune defense against viruses.
IL-29 similar to IL-28.
IL-33 induces helper T cells, mast cells, eosinophils and basophils to produce type 2 cytokines.
IL-34 increases growth or survival of monocytes.
IL-36 acts on naïve CD4+ T cells.