Genomics

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Identification of NOTCH1 bound genes in chronic lymphocytic leukaemia (CLL) cells


ABSTRACT: NOTCH1 is mutationally activated in ~15% of cases of chronic lymphocytic leukaemia (CLL), but its role in B-cell development and leukemogenesis is not known. Here, we report that the active intracellular portion of NOTCH1 (ICN1) is detectable in ~50% of peripheral blood CLL cases lacking gene mutations. We identify a ‘NOTCH1 CLL gene expression signature’ in CLL cells, and show that this signature is significantly enriched in primary CLL cases expressing ICN1, independent of NOTCH1 mutation. NOTCH1 target genes include key regulators of B-cell proliferation, survival and signal transduction physiology. In particular, we show that MYC is a direct target of NOTCH1 via B-cell specific distal regulatory elements, thus implicating this oncogene in the pathogenesis of the disease.

ORGANISM(S): Homo sapiens

PROVIDER: GSE92701 | GEO | 2017/03/24

SECONDARY ACCESSION(S): PRJNA358396

REPOSITORIES: GEO

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