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Título: | Bone marrow clonogenic myeloid progenitors from NPM1-mutated AML patients do not harbor the NPM1 mutation: Implication for the cell-of-origin of NPM1+ AML |
Autor: | Díaz de la Guardia, Rafael; González-Silva, Laura CSIC ORCID; López-Millán, Belén; Rodríguez-Sevilla, Juan José; Baroni, Matteo L.; Bueno, Clara; Anguita, Eduardo; Vives, Susana; Palomo, Laura; Lapillonne, Helene; Varela, Ignacio CSIC ORCID; Menéndez, Pablo | Palabras clave: | AML NPM1 mutations FLT3-ITD Clonogenic progenitors Colony forming units (CFU) |
Fecha de publicación: | 2020 | Editor: | Multidisciplinary Digital Publishing Institute | Citación: | Genes 11(1): 73 (2020) | Resumen: | The cell-of-origin of NPM1- and FLT3-mutated acute myeloid leukemia (AML) is still a matter of debate. Here, we combined in vitro clonogenic assays with targeted sequencing to gain further insights into the cell-of-origin of NPM1 and FLT3-ITD-mutated AML in diagnostic bone marrow (BM) from nine NPM1+/FLT3-ITD (+/−) AMLs. We reasoned that individually plucked colony forming units (CFUs) are clonal and reflect the progeny of a single stem/progenitor cell. NPM1 and FLT3-ITD mutations seen in the diagnostic blasts were found in only 2/95 and 1/57 individually plucked CFUs, suggesting that BM clonogenic myeloid progenitors in NPM1-mutated and NPM1/FLT3-ITD-mutated AML patients do not harbor such molecular lesions. This supports previous studies on NPM1 mutations as secondary mutations in AML, likely acquired in an expanded pool of committed myeloid progenitors, perhaps CD34−, in line with the CD34−/low phenotype of NPM1-mutated AMLs. This study has important implications on the cell-of-origin of NPM1+ AML, and reinforces that therapeutic targeting of either NPM1 or FLT3-ITD mutations might only have a transient clinical benefit in debulking the leukemia, but is unlikely to be curative since will not target the AML-initiating/preleukemic cells. The absence of NPM1 and FLT3-ITD mutations in normal clonogenic myeloid progenitors is in line with their absence in clonal hematopoiesis of indeterminate potential. | Descripción: | © 2020 by the authors. | Versión del editor: | http://dx.doi.org/10.3390/genes11010073 | URI: | http://hdl.handle.net/10261/223544 | DOI: | 10.3390/genes11010073 | E-ISSN: | 2073-4425 |
Aparece en las colecciones: | (IBBTEC) Artículos |
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