Interleukin 4 (IL-4) is a cytokine that can lead to development of Th2 cells. The 140 kD IL-4 Receptor (CD124) is found on many cell types, even those of non-hematopoietic origen. The receptor is formed from two chains: IL-4R(alpha) and the IL-2R gamma chain (CD132). Primary signaling is through the JAK/Stat6 pathway and MAPKs.
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REFERENCES: Hinton HJ, Welham MJ. 1999. Cytokine-induced protein kinase B activation and Bad phosphorylation do not correlate with cell survival of hemopoietic cells. J Immunol 15;162(12):7002-9.