The Role of Cytidine Deaminase and GATA1 Mutations in the Increased Cytosine Arabinoside Sensitivity of Down Syndrome Myeloblasts and Leukemia Cell Lines

Abstract excerpt

Myeloblasts from Down syndrome (DS) children with acute myeloid leukemia (AML) are significantly more sensitive in vitro to 1-beta-D-arabinofuranosylcytosine (ara-C) and generate higher 1-beta-D-arabinofuranosylcytosine 5'-triphosphate (ara-CTP) than non-DS AML myeloblasts. Semiquantitative reverse transcription-PCR analyses demonstrated that transcripts for cytidine deaminase (CDA) were 2.7-fold lower in DS than...

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