Reversible interconversion and maintenance of mammary epithelial cell characteristics by the ligand-regulated EGFR system

Shinji Fukuda, Hisayo Nishida-Fukuda, Daisuke Nanba, Koh Ichi Nakashiro, Hironao Nakayama, Hiroyuki Kubota, Shigeki Higashiyama

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number20209
JournalScientific reports
Volume6
DOIs
Publication statusPublished - Feb 2 2016

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Epidermal Growth Factor Receptor
Breast
Epithelial Cells
Maintenance
Epidermal Growth Factor
Epithelial-Mesenchymal Transition
Ligands
Aptitude
Amphiregulin
EGF Family of Proteins
MicroRNAs
Cues
Cultured Cells
Transcription Factors
Cell Membrane
Phenotype

All Science Journal Classification (ASJC) codes

  • General

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Reversible interconversion and maintenance of mammary epithelial cell characteristics by the ligand-regulated EGFR system. / Fukuda, Shinji; Nishida-Fukuda, Hisayo; Nanba, Daisuke; Nakashiro, Koh Ichi; Nakayama, Hironao; Kubota, Hiroyuki; Higashiyama, Shigeki.

In: Scientific reports, Vol. 6, 20209, 02.02.2016.

Research output: Contribution to journalArticle

Fukuda, Shinji ; Nishida-Fukuda, Hisayo ; Nanba, Daisuke ; Nakashiro, Koh Ichi ; Nakayama, Hironao ; Kubota, Hiroyuki ; Higashiyama, Shigeki. / Reversible interconversion and maintenance of mammary epithelial cell characteristics by the ligand-regulated EGFR system. In: Scientific reports. 2016 ; Vol. 6.
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