PMID- 26831618 OWN - NLM STAT- MEDLINE DCOM- 20170106 LR - 20181202 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 6 DP - 2016 Feb 2 TI - Reversible interconversion and maintenance of mammary epithelial cell characteristics by the ligand-regulated EGFR system. PG - 20209 LID - 10.1038/srep20209 [doi] LID - 20209 AB - Epithelial cell plasticity is controlled by extracellular cues, but the underlying mechanisms remain to be fully understood. Epidermal growth factor (EGF) and amphiregulin (AREG) are high- and low-affinity ligands for EGF receptor (EGFR), respectively. EGFR signaling is known to promote epithelial-mesenchymal transition (EMT) by the activation of ERK and the induction of an EMT transcription factor, ZEB1. Here, we demonstrate that ligand-switching between EGF and AREG at equivalent molarity reversibly interconverts epithelial and mesenchymal-like states of EGFR signal-dependent mammary epithelial cells. The EGF- and AREG-cultured cells also differ in their epithelial characteristics, including the expression of cell surface markers, the mode of migration and the ability for acinus-formation. The ligand-switching between EGF and AREG temporally alters strength of the shared EGFR-ERK signaling. This alteration inverts relative expression levels of ZEB1 and its antagonizing microRNAs, miR-205 and miR-200c, those are critical determinants of the epithelial phenotype. Further, AREG-induced EGFR accumulation on the plasma membrane compensates for the weak association between AREG and EGFR. The EGFR dynamics enables AREG to support proliferation as efficiently as EGF at equivalent molarity and to maintain epithelial characteristics. Our findings reveal a role of EGFR ligands-generated signal strength in the regulation of mammary epithelial cell plasticity. FAU - Fukuda, Shinji AU - Fukuda S AD - Division of Cell Growth and Tumor Regulation, Proteo-Science Center (PROS), Ehime University, Toon, Ehime, Japan. AD - Department of Biochemistry and Molecular Genetics, Ehime University Graduate School of Medicine, Toon, Ehime, Japan. FAU - Nishida-Fukuda, Hisayo AU - Nishida-Fukuda H AD - Department of Biochemistry and Molecular Genetics, Ehime University Graduate School of Medicine, Toon, Ehime, Japan. FAU - Nanba, Daisuke AU - Nanba D AD - Division of Cell Growth and Tumor Regulation, Proteo-Science Center (PROS), Ehime University, Toon, Ehime, Japan. AD - Department of Biochemistry and Molecular Genetics, Ehime University Graduate School of Medicine, Toon, Ehime, Japan. FAU - Nakashiro, Koh-ichi AU - Nakashiro K AD - Department of Oral and Maxillofacial Surgery, Ehime University Graduate School of Medicine, Toon, Ehime, Japan. FAU - Nakayama, Hironao AU - Nakayama H AD - Division of Cell Growth and Tumor Regulation, Proteo-Science Center (PROS), Ehime University, Toon, Ehime, Japan. AD - Department of Biochemistry and Molecular Genetics, Ehime University Graduate School of Medicine, Toon, Ehime, Japan. FAU - Kubota, Hiroyuki AU - Kubota H AD - Division of Integrated Omics, Research Center for Transomics Medicine, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan. AD - PRESTO, Japan Science and Technology Corporation, Fukuoka, Japan. FAU - Higashiyama, Shigeki AU - Higashiyama S AD - Division of Cell Growth and Tumor Regulation, Proteo-Science Center (PROS), Ehime University, Toon, Ehime, Japan. AD - Department of Biochemistry and Molecular Genetics, Ehime University Graduate School of Medicine, Toon, Ehime, Japan. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20160202 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - 0 (AREG protein, human) RN - 0 (Amphiregulin) RN - 0 (Ligands) RN - 0 (Transforming Growth Factor beta) RN - 62229-50-9 (Epidermal Growth Factor) RN - EC 2.7.10.1 (ErbB Receptors) SB - IM MH - Amphiregulin/metabolism MH - Breast Neoplasms/genetics/metabolism/pathology MH - Cell Line, Tumor MH - Epidermal Growth Factor/metabolism MH - Epithelial Cells/*metabolism/pathology MH - Epithelial-Mesenchymal Transition/genetics MH - ErbB Receptors/*metabolism MH - Female MH - Gene Expression Regulation MH - Humans MH - *Ligands MH - MAP Kinase Signaling System MH - Mammary Glands, Human/*cytology/*metabolism/pathology MH - Phenotype MH - Phosphorylation MH - Signal Transduction MH - Transforming Growth Factor beta/metabolism PMC - PMC4735799 EDAT- 2016/02/03 06:00 MHDA- 2017/01/07 06:00 PMCR- 2016/02/02 CRDT- 2016/02/03 06:00 PHST- 2015/09/08 00:00 [received] PHST- 2015/12/23 00:00 [accepted] PHST- 2016/02/03 06:00 [entrez] PHST- 2016/02/03 06:00 [pubmed] PHST- 2017/01/07 06:00 [medline] PHST- 2016/02/02 00:00 [pmc-release] AID - srep20209 [pii] AID - 10.1038/srep20209 [doi] PST - epublish SO - Sci Rep. 2016 Feb 2;6:20209. doi: 10.1038/srep20209.