Cytokines play roles in a wide range of responses such as immune response,
hematopoiesis and inflammation. A large volume of studies revealed that cyt
okines show functional pleiotropy and redundancy. Gp130 is a receptor subun
it shared by the interleukin-6 family of cytokines, We describe and discuss
signaling through gp130 in relation to a general scenario for cytokine sig
naling regulating cell growth, differentiation and survival.