Interleukins (ILs) are key mediators in the regulation and coordination of the immune response. Glycoprotein 130 (gp130) belongs to the family of class I cytokine receptors and is the common signal transducing receptor subunit of the IL-6-type cytokines: IL-6, IL-11, leukemia inhibitory factor (LIF), ciliary neurotrophic factor (CNTF), oncostatin M (OSM), and cardiotrophin-1.The inflammatory cytokines IL-6 and IL-11 induce gp130 homodimerization after binding to their specific α receptors, which leads to the activation of the Janus kinase/STAT signal transduction pathway. Gp130 Heterodimerizes with LIFR in response to LIF, CNTF, OSM, or CT13.