Interleukin 13 (IL-13) is a cytokine secreted from type 2 T helper (Th2) cells. IL-13 has overlapping functions with interleukin 4 (IL-4), including the induction of immunoglobulin E (IgE) secretion from B cells, and the inhibition of interleukin 1 beta (IL-1β), tumor necrosis factor alpha (TNFα), interleukin 8 (IL-8), and interleukin 6 (IL-6) inflammatory cytokine expression. IL-13 also regulates immune cell inflammation in response to the pathophysiological changes of surrounding non-immune cells. The IL-13 receptor consists of the IL-4Ra and IL-13Ra1 subunits. IL-13 can also bind the IL-13Ra2 receptor with high affinity. IL-13 functions are mediated through the JAK/STAT signaling pathway. Human and mouse IL-13 are cross-reactive.

Shenandoah Biotechnology is a manufacturer of research grade recombinant proteins typically used as cytokines, growth factors and chemokines in cell based assays and cell culture. Each production lot is tested for QA and the expected values for each product can be viewed under the product specifications tab.

A COA is supplied with each product shipped detailing purity, formulation, biological activity, endotoxin levels, reconstitution instructions and recommended storage conditions.  This product is for research use only and is not for use in humans.