Effects of PEP-1-PEBP1 or control-PEBP1 protein on cell viability was assessed based on a WST-1 assay kit (Daeillab Service, Seoul, South Korea) as described previously [15 (link)]. Briefly, PEP-1-PEBP1 or control-PEBP1 protein (0.5–3 μM) was pretreated in NSC34 cells for 1 h and thereafter cells were exposed to 1 mM H2O2 for 5 h. Cell viability was measured at 450 nm using an ELISA microplate reader (Labsystems Multiskan MCC/340, Helsinki, Finland), and cell viability was expressed as a percentage value versus that in the untreated control cells.
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