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Quercetin induced apoptosis in human leukemia HL-60 cells.

D Xiao, Shou-Pei Zhu, Zhen‐Lun Gu

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Abstract

AIM: To examine whether quercetin (Que) might induce apoptosis in human leukemia HL-60 cells. METHODS: DNA fragmentation was visualized by agarose gel electrophoresis. Inhibition of proliferation was measured with a colorimetric MTT-assay. The DNA degradation was determined using flow cytometry, and the microscopic changes were observed by an electron microscope. RESULTS: Que 15-120 mumol.L-1 elicited typical apoptosis morphological changes including condensed chromatin, nuclear fragmentation, and reduction in volume. DNA fragmentation and DNA degradation in a concentration-dependent manner in HL-60 cells. Que inhibited HL-60 cell proliferation. The values of IC50 and 95% confidence limits were 43 (30-61) mumol.L-1 after 48-h treatment with Que. CONCLUSION: Que induced apoptosis in HL-60 cells.

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What this paper is about

AIM: To examine whether quercetin (Que) might induce apoptosis in human leukemia HL-60 cells. METHODS: DNA fragmentation was visualized by agarose gel electrophoresis. Inhibition of proliferation was measured with a colorimetric MTT-assay. The DNA degradation was determined using flow cytometry, and the microscopic changes were observed by an electron microscope. RESULTS: Que 15-120 mumol.L-1 elicited typical apoptosis morphological changes including condensed chromatin, nuclear fragmentation, and reduction in volume. DNA fragmentation and DNA degradation in a concentration-dependent manner in HL-60 cells. Que inhibited HL-60 cell proliferation. The values of IC50 and 95% confidence limits were 43 (30-61) mumol.L-1 after 48-h treatment with Que. CONCLUSION: Que induced apoptosis in HL-60 cells.

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Available abstract

AIM: To examine whether quercetin (Que) might induce apoptosis in human leukemia HL-60 cells. METHODS: DNA fragmentation was visualized by agarose gel electrophoresis. Inhibition of proliferation was measured with a colorimetric MTT-assay. The DNA degradation was determined using flow cytometry, and the microscopic changes were observed by an electron microscope. RESULTS: Que 15-120 mumol.L-1 elicited typical apoptosis morphological changes including condensed chromatin, nuclear fragmentation, and reduction in volume. DNA fragmentation and DNA degradation in a concentration-dependent manner in HL-60 cells. Que inhibited HL-60 cell proliferation. The values of IC50 and 95% confidence limits were 43 (30-61) mumol.L-1 after 48-h treatment with Que. CONCLUSION: Que induced apoptosis in HL-60 cells.

Key concepts: Apoptosis, DNA fragmentation, Molecular biology, Fragmentation (computing), Agarose gel electrophoresis, Flow cytometry, Cell growth, Chromatin

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