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Interkeukin-4 (IL-4) induces differentiation of naive helper T cells (Th0 cells) to Th2 cells. Upon activation by IL-4, Th2 cells subsequently produce additional IL-4. IL-4 has many biological roles, including the stimulation of activated B-cell and T-cell proliferation, and the differentiation of CD4+ T-cells into Th2 cells. It is a key regulator in humoral and adaptive immunity. IL-4 induces B-cell class switching to IgE, and up-regulates MHC class II production. Overproduction of IL-4 is associated with allergies.
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Yeast
Recombinant proteins produced in yeast
For research use only. Not for use in diagnostic procedures.
United States
The Human IL-4 protein can be used in cell culture, as an IL-4 ELISA Standard, and as a Western Blot Control.