Mutant p53 drives invasion by promoting integrin recycling - PubMed (original) (raw)
. 2009 Dec 24;139(7):1327-41.
doi: 10.1016/j.cell.2009.11.026.
Patrick T Caswell, Brendan Doyle, Marcin P Iwanicki, Ee H Tan, Saadia Karim, Natalia Lukashchuk, David A Gillespie, Robert L Ludwig, Pauline Gosselin, Anne Cromer, Joan S Brugge, Owen J Sansom, Jim C Norman, Karen H Vousden
Affiliations
- PMID: 20064378
- DOI: 10.1016/j.cell.2009.11.026
Free article
Mutant p53 drives invasion by promoting integrin recycling
Patricia A J Muller et al. Cell. 2009.
Free article
Abstract
p53 is a tumor suppressor protein whose function is frequently lost in cancers through missense mutations within the Tp53 gene. This results in the expression of point-mutated p53 proteins that have both lost wild-type tumor suppressor activity and show gain of functions that contribute to transformation and metastasis. Here, we show that mutant p53 expression can promote invasion, loss of directionality of migration, and metastatic behavior. These activities of p53 reflect enhanced integrin and epidermal growth factor receptor (EGFR) trafficking, which depends on Rab-coupling protein (RCP) and results in constitutive activation of EGFR/integrin signaling. We provide evidence that mutant p53 promotes cell invasion via the inhibition of TAp63, and simultaneous loss of p53 and TAp63 recapitulates the phenotype of mutant p53 in cells. These findings open the possibility that blocking alpha5/beta1-integrin and/or the EGF receptor will have therapeutic benefit in mutant p53-expressing cancers.
Copyright 2009 Elsevier Inc. All rights reserved.
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