title: Aquaporin 8 involvement in human cervical cancer SiHa migration via the EGFR-Erk1/2 pathway.
abstract: Overexpression of aquaporins (AQPs) has been reported in several human cancers. Epidermal growth factor receptor (EGFR)-extracellular signal-regulated kinases 1/2 (Erk1/2) are associated with tumorigenesis and cancer progression and may upregulate AQP expression. In this study, we demonstrated that EGF (epidermal growth factor) induces SiHa cells migration and AQP8 expression. Wound healing results showed that cell migration was increased by 2.79-1.50-fold at 24 h and 48 h after EGF treatment. AQP8 expression was significantly increased (3.33-fold) at 48 h after EGF treatment in SiHa cells. An EGFR kinase inhibitor, PD153035, blocked EGF-induced AQP8 expression and cell migration and AQP8 expression was decreased from 1.59-fold (EGF-treated) to 0.43-fold (PD153035-treated) in SiHa. Furthermore, the MEK (MAPK (mitogen-activated protein kinase)/Erk (extracellular signal regulated kinase)/Erk inhibitor U0126 also inhibited EGF-induced AQP8 expression and cell migration. AQP8 expression was decreased from 1.21-fold (EGF-treated) to 0.43-fold (U0126-treated). Immunofluorescence microscopy further confirmed the results. Collectively, our findings show that EGF induces AQP8 expression and cell migration in human cervical cancer SiHa cells via the EGFR/Erk1/2 signal transduction pathway.
authors.affiliation: Department of Pathology, Basic Medicine College of Xinjiang Medical University, Xinjiang, China E-mail : z5826711@126.com.
authors.forename: Yong-Hua
authors.initials: YH
authors.lastname: Shi
authors.forename: Talaf
authors.initials: T
authors.lastname: Tuokan
authors.forename: Chen
authors.initials: C
authors.lastname: Lin
authors.forename: Heng
authors.initials: H
authors.lastname: Chang
mesh_terms: D017209:Apoptosis; D020346:Aquaporins / Q000378:metabolism*; D015153:Blotting, Western; D002465:Cell Movement; D049109:Cell Proliferation; D066246:ErbB Receptors / Q000378:metabolism*; D005260:Female; D005455:Fluorescent Antibody Technique; D006801:Humans; D019950:Mitogen-Activated Protein Kinase 1 / Q000378:metabolism*; D048052:Mitogen-Activated Protein Kinase 3 / Q000378:metabolism*; D010766:Phosphorylation; D015398:Signal Transduction; D014407:Tumor Cells, Cultured; D002583:Uterine Cervical Neoplasms / Q000378:metabolism / Q000473:pathology*; D014945:Wound Healing
chemical_list: D020346:Aquaporins; C108330:aquaporin 8; C512478:EGFR protein, human; D066246:ErbB Receptors; C535150:MAPK1 protein, human; D019950:Mitogen-Activated Protein Kinase 1; D048052:Mitogen-Activated Protein Kinase 3