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Title

Involvement of Cot activity in the proliferation of ALCL lymphoma cells

AuthorsFernández, Margarita ; Manso, Rebeca; Bernáldez, Flavia; López-Larrubia, Pilar ; Martín-Duce, Antonio; Alemany, Susana
Issue Date2011
PublisherElsevier
CitationBiochemical and Biophysical Research Communications 411(4): 655-660 (2011)
AbstractAnaplastic large-cell lymphoma (ALCL) cells overexpress CD30 on their cell surface, show increased levels of activated Erk1/2 and of JunB; participating JunB in the proliferative capacity of these lymphomas. Here, we show that ALCL lymphoma cells also present high expression levels of the proto-oncogenic Cot (MAP3K8). Using pharmacological drugs as well as the RNA interference technique we show that Cot protein is responsible for the constitutive Erk1/2 activation in the ALCL lymphoma cells, SUDHL-1. Besides, inhibition of Cot activity reduces the number of cell divisions which is achieved, at least in part, by the control that Cot exercises on the activation state of p70 S6K and on the expression levels of JunB. Since Cot represents an alternative mode, independently of RAF, to activate Erk1/2, all these data strongly suggest that molecular targeting of Cot may be a potential new specific strategy for ALCL lymphomas therapy, without the fully disturbance of the Erk1/2 function. © 2011.
URIhttp://hdl.handle.net/10261/77241
DOI10.1016/j.bbrc.2011.06.157
Identifiersdoi: 10.1016/j.bbrc.2011.06.157
issn: 0006-291X
e-issn: 1090-2104
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