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Updated: May 20, 2026

Investigation of the Transcriptional Role of a RUNX1 Intronic Silencer by CRISPR/Cas9 Ribonucleoprotein in Acute Myeloid Leukemia Cells
Published on: September 1, 2019
Expression of RUNX1 isoforms and its target gene BLK in childhood acute lymphoblastic leukemia
Oreth Montero-Ruíz1, Miguel Angel Alcántara-Ortigoza, Miguel Betancourt
1Laboratorio de Cultivo de Tejidos, Instituto Nacional de Pediatría, México, DF, Mexico.
Abstract:
Bone marrow samples from children with acute lymphoblastic leukemia were analyzed for the expression of RUNX1a/b/c isoforms. Obtained patterns were associated with genetic abnormalities and the expression of the RUNX1 regulated gene BLK. RUNX1c was present in all patients, but the expected over-expression of RUNX1a was not observed. Over-expression of total RUNT domain isoforms was detected in patients with extra RUNX1 copies, and unexpectedly, in those with t(4;11). Only expression of the total RUNT domain-containing isoforms and BLK presented positive correlation. Results suggest a more complex role of RUNX1 in leukemogenesis than the proposed antagonism between the isoforms.
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