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Inhibitory cells proliferation and induce cells apoptosis by TPT on HL-60 cell by c-myc

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Author:
No author available
Journal Title:
JOURNAL OF LEUKEMIA & LYMPHOMA
Issue:
3
DOI:
10.3760/cma.j.issn.1009-9921.2008.03.004
Key Word:
HL-60细胞;原癌基因蛋白质c-myc;拓扑替康;HL-60 cell;Proto-oncogene proteins c-myc;Topotecan

Abstract: Objective The effects of TPT on the induction of apoptosis of leukemia cells and the regulation of c-myc in mRNA and protein level. Methods RT-PCR method was adopted to examine the expressions of the genes and immune histochemistry for the proteins of c-myc in HL-60 cells treated with TPT of optimal concentration and time. Results After HL-60 cells by TPT of 0.15 μmol/L for 12 h, the expression of c-myc mRNA decreased markedly assayed by RT-PCR. There was a significant difference between the TPT group and the control group(0.17±0.03 vs 1.11±0.25, P <0.05), expressive c-myc protein decreased assayed by evidently immunohistochemistry. The percentage of positive cells expressing c-myc protein was a significant difference between the TPT treated group and the control group (19.67 % vs 68.33 %, P<0.05). Conclusion TPT down-regulates endogenic c-myc mRNA and c-myc protein in HL-60 cells.

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