resistance to taxanes in triple-negative breast cancer associates with the dynamics of a cd49f+ tumor-initiating population

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ID: 240534
2017
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Ranked #11 of 101 articles by views in nature reviews gastroenterology & hepatology

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Abstract
Taxanes are a mainstay of treatment for breast cancer, but resistance often develops followed by metastatic disease and mortality. Aiming to reveal the mechanisms underlying taxane resistance, we used breast cancer patient-derived orthoxenografts (PDX). Mimicking clinical behavior, triple-negative breast tumors (TNBCs) from PDX models were more sensitive to docetaxel than luminal tumors, but they progressively acquired resistance upon continuous drug administration. Mechanistically, we found that a CD49f+ chemoresistant population with tumor-initiating ability is present in sensitive tumors and expands during the acquisition of drug resistance. In the absence of the drug, the resistant CD49f+ population shrinks and taxane sensitivity is restored. We describe a transcriptional signature of resistance, predictive of recurrent disease after chemotherapy in TNBC. Together, these findings identify a CD49f+ population enriched in tumor-initiating ability and chemoresistance properties and evidence a drug holiday effect on the acquired resistance to docetaxel in triple-negative breast cancer.
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gmez-miragaya2017stemresistance Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Jorge Gómez-Miragaya;Marta Palafox;Laia Paré;Guillermo Yoldi;Irene Ferrer;Sergi Vila;Patricia Galván;Pasquale Pellegrini;Hector Pérez-Montoyo;Ana Igea;Purificación Muñoz;Manel Esteller;Angel R. Nebreda;Ander Urruticoechea;Idoia Morilla;Sonia Pernas;Fina Climent;María Teresa Soler-Monso;Ana Petit;Violeta Serra;Aleix Prat;Eva González-Suárez
Journal nature reviews gastroenterology & hepatology
Year 2017
DOI
10.1016/j.stemcr.2017.03.026
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