[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.15616/BSL.2021.27.2.95

Pro-apoptotic Effects of S100A8 and S100A9 on human FIP1L1-PDGFRα+ Eosinophilic Leukemia Cells

Lee, Ji-Sook (Department of Clinical Laboratory Science, Wonkwang Health Science University)

Abstract

The S100 family proteins act as inducers of cancer cell apoptosis and inflammatory mediators. This study examined the pro-apoptotic mechanism caused by S100A8 and S100A9 in human FIP1L1-PDGFRα-positive eosinophilic leukemia cells. S100A8 and S100A9 elicited the death of EoL-1 cells in a time and dose-dependent manner. The activation of PDGFRα was suppressed by a decrease in PDGFRα after treatment with S100A8 and S100A9. Cycloheximide, a translation inhibitor, suppressed PDGFRα expression from 1 h to 5 h, and a co-treatment with S100A8 and S100A9 boosted the decrease in expression. The phosphorylation and expression of STAT5 decreased after treatment with S100A8 and S100A9 in EoL-1 and imatinib-resistant (EoL-1-IR) cells. S100A8 and S100A9 induced the chemotaxis of EoL-1 cells but did not affect the chemoattraction of EoL-1-IR. These findings indicate the cell death mechanism due to S100 family proteins and the development of leukemia therapy using S100A8 and S100A9.

Keywords

S100; FIP1L1- $PDGFR{\alpha}$ ; Chronic eosinophil leukemia;

Citations & Related Records

Reference

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