IL13(redirected from Interleukin 13)
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IL13A gene on chromosome 5q31 that encodes interleukin-13, an immunoregulatory cytokine produced primarily by activated Th2 cells which is involved in B-cell maturation and differentiation. IL13 upregulates CD23 and MHC class II expression and promotes IgE isotype switching in B cells; it downregulates macrophage activity, inhibiting production of pro-inflammatory cytokines and chemokines.
IL-13 plays a central in the pathogenesis of allergen-induced asthma by IgE- and eosinophil-independent mechanisms.