dc.contributor.author | Dalmases, Alba | |
dc.contributor.author | González, Irene | |
dc.contributor.author | Menéndez, Silvia | |
dc.contributor.author | Arpí, Oriol | |
dc.contributor.author | Corominas, Josep María | |
dc.contributor.author | Servitja, Sonia | |
dc.contributor.author | Tusquets, Ignasi | |
dc.contributor.author | Chamizo, Cristina | |
dc.contributor.author | Rincón, Raúl | |
dc.contributor.author | Espinosa, Lluis | |
dc.contributor.author | Bigas, Anna | |
dc.contributor.author | Eroles, Pilar | |
dc.contributor.author | Furriol, Jessica | |
dc.contributor.author | Lluch, Anna | |
dc.contributor.author | Rovira, Ana | |
dc.contributor.author | Albanell, Joan | |
dc.contributor.author | Rojo, Federico | |
dc.date.accessioned | 2014-06-12T12:01:22Z | |
dc.date.available | 2014-06-12T12:01:22Z | |
dc.date.issued | 2013-11-23 | |
dc.identifier.citation | Oncotarget 5.1 (2014): 196-210 | es_ES |
dc.identifier.issn | 1949-2553 (online) | es_ES |
dc.identifier.uri | http://hdl.handle.net/10486/660585 | |
dc.description.abstract | NF-кB has been linked to doxorubicin resistance in breast cancer patients. NF-
кB nuclear translocation and DNA binding in doxorubicin treated-breast cancer cells
have been extensively examined; however its functional relevance at transcriptional
level on NF-кB -dependent genes and the biological consequences are unclear. We
studied NF-кB -dependent gene expression induced by doxorubicin in breast cancer
cells and fresh human cancer specimens with different genetic backgrounds focusing
on their p53 status.
NF-кB –dependent signature of doxorubicin was identified by gene expression
microarrays in breast cancer cells treated with doxorubicin and the IKKβ-inhibitor
MLN120B, and confirmed ex vivo in human cancer samples. The association with p53
was functionally validated. Finally, NF-кB activation and p53 status was determined
in a cohort of breast cancer patients treated with adjuvant doxorubicin-based
chemotherapy.
Doxorubicin treatment in the p53-mutated MDA-MB-231 cells resulted in NF NF-
кB driven-gene transcription signature. Modulation of genes related with invasion,
metastasis and chemoresistance (ICAM-1, CXCL1, TNFAIP3, IL8) were confirmed in
additional doxorubicin-treated cell lines and fresh primary human breast tumors. In
both systems, p53-deficient background correlated with the activation of the NF-кB
–dependent signature. Furthermore, restoration of p53WT in the mutant p53 MDAMB-
231 cells impaired NF-кB driven transcription induced by doxorubicin. Moreover, a
p53 deficient background and nuclear NF-кB /p65 in breast cancer patients correlated
with reduced disease free-survival.
This study supports that p53 deficiency is necessary for a doxorubicin driven
NF-кB -response that limits doxorubicin cytotoxicity in breast cancer and is linked to
an aggressive clinical behavior. | en_US |
dc.description.sponsorship | Financial support: This work was supported
by RD12/0036/0051 (J.A.), RD09/0076/0101,
RD09/0076/0036, RD12/0036/0054 (A.B),
RD12/0036/0070 (A. Ll), PI12/00680 (J.A.), PI12/01552
(F.R.), PI12/01421 (A.Ll.), 2009 SGR 321 (J.A.), FMM
9757/002 (F.R.), and the “Xarxa de Bancs de tumors
sponsored by Pla Director d’Oncologia de Catalunya
(XBTC). J.A. and F.R. are recipients of intensification program ISCIII/FEDER. We thank Fundació Cellex
(Barcelona) for a generous donation to the Hospital del
Mar Medical Oncology Service. We thank Millenium for
generously providing MLN120B. | es_ES |
dc.format.extent | 15 pag. | es_ES |
dc.format.mimetype | application/pdf | es_ES |
dc.format.mimetype | application/vnd.ms-excel | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Impact Journals | en_US |
dc.relation.ispartof | Oncotarget | en_US |
dc.subject.other | Breast cancer | en_US |
dc.subject.other | Chemoresistance | en_US |
dc.subject.other | NF-кB | en_US |
dc.subject.other | p53 | en_US |
dc.subject.other | Prognosis | en_US |
dc.title | Deficiency in p53 is required for doxorubicin induced transcriptional activation of NF-кB target genes in human breast cancer | en_US |
dc.type | article | en |
dc.subject.eciencia | Biología y Biomedicina / Biología | es_ES |
dc.identifier.publicationfirstpage | 196 | es_ES |
dc.identifier.publicationissue | 1 | es_ES |
dc.identifier.publicationlastpage | 210 | es_ES |
dc.identifier.publicationvolume | 5 | es_ES |
dc.relation.projectID | Comunidad de Madrid. S2010/BMD-2344/COLOMICS2 | es_ES |
dc.type.version | info:eu-repo/semantics/publishedVersion | es_ES |
dc.rights.cc | Reconocimiento | es_ES |
dc.rights.accessRights | openAccess | en |
dc.institutoUAM | Instituto de Investigaciones Biomédicas "Alberto Sols" (IIBM) | |