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Papel de los genes de la red Myc-Mxd en la diferenciación de células troncales embrionarias / Role of MYC-MXD network genes in embryonic stem cell differentation

Authors: García Espeso, Julia;

Papel de los genes de la red Myc-Mxd en la diferenciación de células troncales embrionarias / Role of MYC-MXD network genes in embryonic stem cell differentation

Abstract

[ES]: MYC (c-MYC) es un factor de transcripción oncogénico de la familia básico-hélice-lazo-hélice (bHLH), siendo uno de los oncogenes más frecuentemente activados en cáncer humano. Mientras que los mecanismos por los cuales MYC estimula la proliferación han sido estudiados con cierto detalle, los mecanismos por los que MYC bloquea la diferenciación se conocen peor. Se ha visto que MYC bloquea la diferenciación no promoviendo la proliferación, sino reprimiendo genes que inducen la diferenciación. Además, se ha publicado que MYC reprime la expresión de genes de diferenciación en células madre y también su implicación en la reprogramación de células madre pluripotentes, siendo uno de los cuatro factores necesarios para la creación de estas. Por otra parte, no hay nada publicado sobre la expresión de ninguno de los genes de la familia MXD en el control de la pluripotencia. Sin embargo, su implicación es muy probable, ya que se les considera antagonistas de la función de MYC en la transcripción génica. Además, la mayoría de los genes MXD no se expresan en células proliferantes, pero si en diferenciadas. La desregulación de MYC presente en una gran cantidad de cánceres humanos, aumenta la necesidad de conocer a fondo sus funciones y su mecanismo de acción, ya que podría ser diana en terapias anticancerígenas.

[EN]: MYC (c-MYC) is an oncogenic transcription factor of the bHLH family and it is one of the most frequently activated oncogenes in human cancer. Whereas the mechanisms by which MYC stimulates proliferation have been studied in some detail, the mechanisms by which MYC blocks differentiation are much less known. It has been seen that MYC blocks differentiation not by promoting proliferation but by repressing genes that drive cell differentiation. Moreover, it is reported that MYC represses differentiation-associated genes in stem cells and also its involvement in the reprogramming of induced pluripotent stem cells, it is one of the four factors necessary for the creation of these cells. On the other hand, nothing is reported on the expression of MXD family genes in the pluripotency control. However, their involvement is very likely, as they are considered MYC function antagonists in gene transcription. In addition, most MXD genes are not expressed in proliferating cells but yes in differentiated. MYC’s deregulation present in a large number of human cancers, increases the need to know thoroughly their roles and their mechanism of action, as that could be a target for anti-cancer therapies.

Grado en Medicina.

Peer Reviewed

Keywords

Stem cell, Diferenciación, MXD, Differentiation, MYC, Célula madre

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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Cancer Research