Objective:To indentify target genes of transcription factor CCA AT enhancer-binding protein P(CEBPB) in acute proinyelocytie leukemia cells induced by all-tram retinoie acid.Methods: A new strategy for high—throughpu...Objective:To indentify target genes of transcription factor CCA AT enhancer-binding protein P(CEBPB) in acute proinyelocytie leukemia cells induced by all-tram retinoie acid.Methods: A new strategy for high—throughput identification of direct target genes was established by combining chromatin immunoprecipitation(ChIP) with in vitro selection.Then,106 potential CKBPB binding fragments from the genome of the all-trans retinoie acid(ATRA)-treated NB4 cells were identified.Results:Of them,82 were mapped in proximity to known or previously predicted genes;7 were randomly picked up for further confirmation by ChlP-PCR and 3 genes (CALM,1TPR2 and 0RM2) were found to be specificaUy up-regulated in the ATRA-treated NB4 cells,indicating that they might lie the down-stream target genes of ATKA.Conclusions:Our results provided new insight into the mechanisms of ATRA-induced granulocytic differentiation.展开更多
文摘Objective:To indentify target genes of transcription factor CCA AT enhancer-binding protein P(CEBPB) in acute proinyelocytie leukemia cells induced by all-tram retinoie acid.Methods: A new strategy for high—throughput identification of direct target genes was established by combining chromatin immunoprecipitation(ChIP) with in vitro selection.Then,106 potential CKBPB binding fragments from the genome of the all-trans retinoie acid(ATRA)-treated NB4 cells were identified.Results:Of them,82 were mapped in proximity to known or previously predicted genes;7 were randomly picked up for further confirmation by ChlP-PCR and 3 genes (CALM,1TPR2 and 0RM2) were found to be specificaUy up-regulated in the ATRA-treated NB4 cells,indicating that they might lie the down-stream target genes of ATKA.Conclusions:Our results provided new insight into the mechanisms of ATRA-induced granulocytic differentiation.