Dear Editor,
LIF,a multi-functional cytokine,is frequently overexpressed in many human cancers,including breast,colorectal,and pancreatic cancers (Liu et al.,2013;Li et al.,2014;Yu et al.,2014;Pascual-Garcia et al.,2019;Shiet al.,2019;Wang et al.,2019).LIF overexpression is frequently associated with poor prognosis in human cancers (Liu et al.,2013;Li et al.,2014;Yu et al.,2014).LIF functions through binding to LIF receptor complex composed of LIF receptor (LIF-R) and glycoprotein gp130 (Taga and Kishimoto,1997;Heinrich et al.,2003;Watanabe et al.,2006).