alexa Induction of apoptosis by Korean medicine Gagam-whanglyun-haedoktang through activation of caspase-3 in human leukemia cell line, HL-60 cells.
Biochemistry

Biochemistry

Biochemistry & Analytical Biochemistry

Author(s): Kim JB, Koo HN, Joeng HJ, Lyu YS, Park SG,

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Abstract Gagam-whanglyun-haedoktang (GWH) is a newly designed herbal drug formula based on the traditional oriental pharmacological knowledge for the purpose of treating tumorous diseases. Apoptosis is an evolutionarily conserved suicide program residing in cells. In the present study, apoptosis inducing activities of the decocted water extract of GWH were studied. Results of the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay showed that GWH had a strong cytotoxic effect on HL-60 cells. The number of live cells was less than 20\% after exposure to 1 mg/ml GWH for 48 h. GWH increased cytotoxicity of HL-60 cells in a dose- and time-dependent manner. The percentage of apoptotic cells by flow cytometric analysis of the DNA-stained cells increased to 28\%, 31\%, and 37\% at 24 h and to 37\%, 44\%, and 81\% at 48 h after treatment with 0.01, 0.1, and 1 mg/ml GWH, respectively. DNA fragmentation also occurred in apoptosis and was characterized by a ladder pattern on agarose gel. In addition, GWH increased the secretion of tumor necrosis factor-alpha. GWH-induced apoptosis was accompanied by activation of caspase-3. These results suggest that GWH induces activation of caspase-3 and eventually leads to apoptosis.
This article was published in J Pharmacol Sci and referenced in Biochemistry & Analytical Biochemistry

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