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EnglishApproximately one third of acute myeloid leukemias (AMLs) are characterized by aberrant cytoplasmic localization of nucleophosmin (NPMc+ AML), consequent to mutations in the NPM putative nucleolar localization signal. These events are mutually exclusive with the major AML-associated chromosomal rearrangements, and are frequently associated with normal karyotype, FLT3 mutations, and multilineage involvement. We report the gene expression profiles of 78 de novo AMLs (72 with normal karyotype; 6 without major chromosomal abnormalities) that were characterized for the subcellular localization and mutation status of NPM. Unsupervised clustering clearly separated NPMc+ from NPMc– AMLs, regardless of the presence of FLT3 mutations or non–major chromosomal rearrangements, supporting the concept that NPMc+ AML represents a distinct entity. The molecular signature of NPMc+ AML includes up-regulation of several genes putatively involved in the maintenance of a stem-cell phenotype, suggesting that NPMc+ AML may derive from a multipotent hematopoietic progenitor.
Acute myeloid leukemia bearing cytoplasmic nucleophosmin (NPMc+ AML) shows a distinct gene expression profile characterized by up-regulation of genes involved in stem-cell maintenance / M. Alcalay, E. Tiacci, R. Bergomas, B. Bigerna, E. Venturini, S.P. Minardi, N. Meani, D. Diverio, L. Bernard, L. Tizzoni, S. Volorio, L. Luzi, E. Colombo, F. Lo Coco, C. Mecucci, B. Falini, P.G. Pelicci. - In: BLOOD. - ISSN 0006-4971. - 106:3(2005 Aug 01), pp. 899-902.
| Titolo: | Acute myeloid leukemia bearing cytoplasmic nucleophosmin (NPMc+ AML) shows a distinct gene expression profile characterized by up-regulation of genes involved in stem-cell maintenance |
| Autori: | |
| Settore Scientifico Disciplinare: | Settore MED/04 - Patologia Generale |
| Data di pubblicazione: | 1-ago-2005 |
| Rivista: | |
| Tipologia: | Article (author) |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1182/blood-2005-02-0560 |
| Appare nelle tipologie: | 01 - Articolo su periodico |
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