期刊
INTERNATIONAL JOURNAL OF OPHTHALMOLOGY
卷 14, 期 4, 页码 489-496出版社
IJO PRESS
DOI: 10.18240/ijo.2021.04.02
关键词
YM155; retinal pigment epithelial cell; epidermal growth factor receptor; mitogen-activated protein kinase
资金
- Natural Science Foundation of Shaanxi Province, China [2018JM7040]
- Science and Technology Planned Projects of Xi'an City, China [20YXXJ008(4)]
- Health Research Personnel Training Project of Xi'an Health Commission, China
YM155 inhibits RPE cell survival, proliferative and migrative capacity through the EGFR/MAPK signaling pathway, inducing a small amount of cell death. YM155 also induces endocytosis of EGFR in ARPE-19 cells.
AIM: To investigate YM155's effect on retinal pigment epithelium (RPE) cells' viability and the potential regulatory mechanisms. METHODS: Human immortalized RPE cell lines (ARPE-19 cell line) were processed with YM155 and epidermal growth factor (EGF). ARPE-19 cell viability was detected by methyl thiazolyl tetrazolium assay, and apoptosis was tested by flow cytometry assay. ARPE-19 cell proliferation was assessed with bromodeoxyuridine tagged incorporation assay, and migration ability was evaluated via a wound-healing assay. Epidermal growth factor receptor (EGFR)/MAPK pathway proteins were tested via immunoblotting. EGFR localization was examined by immunofluorescence assay. RESULTS: YM155 suppressed ARPE-19 cells' viability in a time and concentration-dependent manner. A high dose of YM155 caused a small amount of ARPE-19 cell death. YM155 significantly diminished the ARPE-19 cells' proliferative and migrative capacity. YM155 down-regulated total EGFR and phosphorylated external signal-regulated protein kinase (ERK), and it up-regulated the phosphorylation of P38MAPK and c-Jun N-terminal kinase (JNK). YM155 induced endocytosis of EGFR in ARPE-19 cell. YM155 also attenuated EGF-induced ARPE-19 cells' proliferative and migrative capacity. Moreover, YM155 significantly decreased the expression of phosphorylated EGFR and ERK after treated by EGF. CONCLUSION: YM155 inhibits RPE cell survival, the cell proliferative and migrative capacity, and it effectuates a small amount of cell death through the EGFR/MAPK signaling pathway. YM155 might, therefore, be an agent to prevent and treat abnormal RPE cell survival in proliferative vitreoretinopathy.
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