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Annonymous

What is IL13?

  4 years, 7 months ago

#IL13
This #gene encodes an immunoregulatory cytokine produced primarily by activated #Th2 cells. This #cytokine is involved in several stages of B-cell maturation and differentiation. It up-regulates CD23 and MHC class II expression, and promotes IgE isotype switching of B cells. This cytokine down-regulates macrophage activity, thereby inhibits the production of pro-inflammatory cytokines and chemokines. This cytokine is found to be critical to the pathogenesis of allergen-induced asthma but operates through mechanisms independent of IgE and eosinophils. This gene, #IL3 , #IL5 , #IL4 , and #CSF2 form a cytokine gene cluster on chromosome 5q, with this #gene particularly close to IL4. [provided ... ..more

Annonymous

What is IL4R?

  4 years, 7 months ago

This gene encodes the alpha chain of the interleukin-4 receptor, a type I transmembrane protein that can bind interleukin 4 and interleukin 13 to regulate IgE production. The encoded protein also can bind interleukin 4 to promote differentiation of Th2 cells. A soluble form of the encoded protein can be produced by proteolysis of the membrane-bound protein, and this soluble form can inhibit IL4-mediated cell proliferation and IL5 upregulation by T-cells. Allelic variations in this gene have been associated with atopy, a condition that can manifest itself as allergic rhinitis, #sinusitus , #asthma , or #eczema . Polymorphisms in this #gene are also ... ..more