PMID- 31092430 OWN - NLM STAT- MEDLINE DCOM- 20190523 LR - 20190523 IS - 1791-7530 (Electronic) IS - 0250-7005 (Linking) VI - 39 IP - 5 DP - 2019 May TI - Lapatinib Inhibits Amphiregulin-induced BeWo Choriocarcinoma Cell Proliferation by Reducing ERK1/2 and AKT Signaling Pathways. PG - 2377-2383 LID - 10.21873/anticanres.13355 [doi] AB - BACKGROUND: Human choriocarcinoma is the most aggressive type of gestational trophoblastic neoplasia. The expression of epidermal growth factor receptor (EGFR) in choriocarcinomas is significantly higher than those of trophoblastic cells in healthy placentas. Lapatinib is a potent EGFR and human epidermal growth factor receptor 2 (HER2) inhibitor that inhibits cell proliferation and induces apoptosis in various human cancer cells. Amphiregulin (AREG) is the most abundant EGFR ligand in amniotic fluid during human pregnancy. AIM: To explore the role of AREG in human choriocarcinoma cell proliferation. MATERIALS AND METHODS: The effect of lapatinib and AREG on cell proliferation was examined by the MTT assay. Western blots were used to investigate EGFR and HER2 expression, and the activation of caspase-3, extracellular signal-regulated kinases 1/2 (ERK1/2) and phosphatidylinositol 3-kinase /protein kinase B (PI3K/AKT) signaling pathways. RESULTS: Treatment with lapatinib reduced BeWo cell proliferation by inducing apoptosis. Moreover, AREG treatment stimulated BeWo cell proliferation by activating ERK1/2 and PI3K/AKT signaling pathways, which was blocked by lapatinib. CONCLUSION: Targeting EGFR/HER2 might be a useful therapeutic strategy for human choriocarcinoma. CI - Copyright(c) 2019, International Institute of Anticancer Research (Dr. George J. Delinasios), All rights reserved. FAU - Pires, Leticia Vicosa AU - Pires LV AD - Department of Gynaecology and Obstetrics, Porto Alegre Clinical Hospital, Porto Alegre, RS, Brazil. AD - Department of Obstetrics and Gynaecology, BC Children's Hospital Research Institute, University of British Columbia, Vancouver, BC, Canada. FAU - Yi, Yuyin AU - Yi Y AD - Department of Obstetrics and Gynaecology, BC Children's Hospital Research Institute, University of British Columbia, Vancouver, BC, Canada. FAU - Cheng, Jung-Chien AU - Cheng JC AD - Department of Obstetrics and Gynaecology, BC Children's Hospital Research Institute, University of British Columbia, Vancouver, BC, Canada. FAU - Pizzolato, Lolita Schneider AU - Pizzolato LS AD - Department of Physiology, Basic Health Science Institute, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil. FAU - Cordero, Elvira AU - Cordero E AD - Department of Physiology, Basic Health Science Institute, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil. FAU - Leung, Peter C K AU - Leung PCK AD - Department of Obstetrics and Gynaecology, BC Children's Hospital Research Institute, University of British Columbia, Vancouver, BC, Canada peter.leung@ubc.ca. FAU - Brum, Ilma Simoni AU - Brum IS AD - Department of Gynaecology and Obstetrics, Porto Alegre Clinical Hospital, Porto Alegre, RS, Brazil. AD - Department of Physiology, Basic Health Science Institute, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil. LA - eng PT - Journal Article PL - Greece TA - Anticancer Res JT - Anticancer research JID - 8102988 RN - 0 (Amphiregulin) RN - 0VUA21238F (Lapatinib) RN - EC 2.7.10.1 (EGFR protein, human) RN - EC 2.7.10.1 (ERBB2 protein, human) RN - EC 2.7.10.1 (ErbB Receptors) RN - EC 2.7.10.1 (Receptor, ErbB-2) RN - EC 2.7.11.1 (Oncogene Protein v-akt) SB - IM MH - Amphiregulin/*genetics/pharmacology MH - Apoptosis/drug effects MH - Cell Line, Tumor MH - Cell Proliferation/drug effects MH - Choriocarcinoma/drug therapy/*genetics/pathology MH - ErbB Receptors/genetics MH - Female MH - Gene Expression Regulation, Neoplastic/drug effects MH - Humans MH - Lapatinib/pharmacology MH - MAP Kinase Signaling System/drug effects MH - Oncogene Protein v-akt/genetics MH - Receptor, ErbB-2/antagonists & inhibitors/*genetics OTO - NOTNLM OT - EGFR OT - HER2 OT - Lapatinib OT - choriocarcinoma EDAT- 2019/05/17 06:00 MHDA- 2019/05/24 06:00 CRDT- 2019/05/17 06:00 PHST- 2019/01/31 00:00 [received] PHST- 2019/04/10 00:00 [revised] PHST- 2019/04/11 00:00 [accepted] PHST- 2019/05/17 06:00 [entrez] PHST- 2019/05/17 06:00 [pubmed] PHST- 2019/05/24 06:00 [medline] AID - 39/5/2377 [pii] AID - 10.21873/anticanres.13355 [doi] PST - ppublish SO - Anticancer Res. 2019 May;39(5):2377-2383. doi: 10.21873/anticanres.13355.