Here, we show that breast cancer-derived exosomes alter the phenotype of macrophages through the interleukin-6 (IL-6) receptor beta (glycoprotein 130, gp130)-STAT3 signaling pathway.
Sphingosine kinase 1 contributes to leptin-induced STAT3 phosphorylation through IL-6/gp130 transactivation in oestrogen receptor-negative breast cancer.
Immunohistochemical staining was used to detect the expression of IL-11 and CTGF in breast cancer tissue, and Western blot was used to detect the expression of p-38, p-C-JUN, p-STAT3, and p-gp130 in fresh breast cancer tissue.
Interleukin-6, IL-11 and other members of the gp130 cytokine family have been identified in preclinical mouse models as promising therapeutic targets for gastrointestinal, hepatic and breast cancers.