Joseph R. Biggs

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A reciprocal translocation involving chromosomes 8 and 21 generates the AML1/ETO oncogenic transcription factor that initiates acute myeloid leukemia by recruiting co-repressor complexes to DNA. AML1/ETO interferes with the function of its wild-type counterpart, AML1, by directly targeting AML1 binding sites. However, transcriptional regulation determined(More)
Emerging evidence suggests that microRNAs (miRNAs), an abundant class of ∼22-nucleotide small regulatory RNAs, play key roles in controlling the post-transcriptional genetic programs in stem and progenitor cells. Here we systematically examined miRNA expression profiles in various adult tissue-specific stem cells and their differentiated counterparts. These(More)
Phorbol ester treatment of U937 leukemic cells results in the activation of numerous protein kinase pathways, followed by cell cycle arrest and differentiation into macrophage-like cells. Because major changes in gene transcription are associated with this process, the role of general transcription factors in the cell response to phorbol esters was(More)
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