Apoptosis Induction by Menadione in Human Promyelocytic Leukemia HL-60 Cells.

Abstract

Cell death induced by menadione (vitamin K-3,2-methyl-1,4-naphthoquinone) has been investigated in human promyelocytic leukemia HL-60 cells. Menadione was found to induce both apoptosis and necrosis in HL-60 cells. Low concentration (1~50 µM) of menadione induced apoptotic cell death, which was demonstrated by typical DNA ladder patterns on agarose gel electrophoresis and flow cytometry analysis. In contrast, a high concentration of menadione (100 µM) induced necrotic cell death, which was demonstrated by DNA smear pattern in agarose gel electrophoresis. Necrotic cell death was accompanied with a great reduction of cell viability. Menadione activated caspase-3, as evidenced by both increased protease activity and proteolytic cleavage of 116 kDa poly(ADP-ribose) polymerase (PARP) into 85 kDa cleavage product. Caspase-3 activity was maximum at 50 µM of menadione, and very low at 100 µM of menadione. Taken together, our results showed that menadi-one induced mixed types of cell death, apoptosis at low concentrations and necrosis at high concentrations in HL-60 cells.

• Authors: Duck-Jin Sa, Eun-Jee Lee, Byung-Sun Yoo
• Journal: Toxicological research (Toxicol Res) Vol. 25 Issue 3 Pg. 113-118 (Sep 2009) ISSN: 1976-8257 [Print] Singapore
• PMID: 32038828 (Publication Type: Journal Article)
• Copyright: © Korean Society of Toxicology 2009.