Since the discovery of IL-9 almost three decades back as a growth factor, we have come a long way to understand its pleiotropic functions in the immune system. Despite its many functions, IL-9 still remains as an understudied cytokine. In the last decade, renewed emphasis has been provided to understand the biology of IL-9. Any growth factor or cytokine signals via its cognate receptor to mediate biological functions. In this chapter, we discuss the IL-9 signal transduction in different cell types, which would then exert its distinct functions.
Roy, D. N., & Goswami, R. (2017). IL-9 signaling pathway: An update. In Methods in Molecular Biology (Vol. 1585, pp. 37–50). Humana Press Inc. https://doi.org/10.1007/978-1-4939-6877-0_3