Functional involvement of RINF, retinoid-inducible nuclear factor (CXXC5), in normal and tumoral human myelopoiesis

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Abstract

Retinoids triggers differentiation of acute promyelocytic leukemia (APL) blasts by transcriptional regulation of myeloid regulatory genes. Using a microarray approach, we have identified a novel retinoid-responsive gene (CXXC5) encoding a nuclear factor, retinoid-inducible nuclear factor (RINF), that contains a CXXC-type zinc-finger motif. RINF expression correlates with retinoid-induced differentiation of leukemic cells and with cytokine-induced myelopoiesis of normal CD34+ progenitors. Furthermore, short hairpin RNA (shRNA) interference suggests for this gene a regulatory function in both normal and tumoral myelopoiesis. Interestingly, RINF localizes to 5q31.3, a small region often deleted in myeloid leukemia (acute myeloid leukemia [AML]/myelodys-plasia [MDS]) and suspected to harbor one or several tumor suppressor gene. (Blood. 2009;113:3172-3181) © 2009 by The American Society of Hematology.

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Pendino, F., Nguyen, E., Jonassen, I., Dysvik, B., Azouz, A., Lanotte, M., … Lillehaug, J. R. (2009). Functional involvement of RINF, retinoid-inducible nuclear factor (CXXC5), in normal and tumoral human myelopoiesis. Blood, 113(14), 3172–3181. https://doi.org/10.1182/blood-2008-07-170035

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