YAO JIE, FANG LICHAO, ZHENG JUNSONG. Mixed lineage leukemia plays a critical role in estrogen-mediated regulation of HOXA10 in acute myelocytic leukemia cells. [J]. Journal of army medical university, 2013, 35(17): 1797-1800.
YAO JIE, FANG LICHAO, ZHENG JUNSONG. Mixed lineage leukemia plays a critical role in estrogen-mediated regulation of HOXA10 in acute myelocytic leukemia cells. [J]. Journal of army medical university, 2013, 35(17): 1797-1800.DOI:
Objective To investigate the expression of HOXA10 in acute myelocytic leukemia cells
and to find the regulating mechanism of HOXA10 expression in acute myelocytic leukemia cells. Methods RT-PCR and Western blotting were applied to detect HOXA10 mRNA and protein expression in
acute myelocytic leukemia HL-60 cells with knockdown of ERα
ERβ and mix lineage leukemia (MLLs) (MLL1-4)
respectively
and with or without treatment of estradiol (E
2
). ChIP was used to check the interaction between MLL and HOXA10
and Western blotting was used to check the methylation status of histone H3K4. Results E
2
could elevate HOXA10 expression through activation of ERα and ERβ. HOXA10 expression could be down-regulated by MLL1 knockdown. MLL1 could bind to the ERE region on HOXA10 promoter sequence. Conclusion This study may provide a new direction to study the pathogenic mechanism of acute myelocytic leukemia
and indicates that MLL1 can be a potential target for prevention and treatment of leukemia.