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2016 ; 7
(10
): 11539-52
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Identification of novel pathways linking epithelial-to-mesenchymal transition
with resistance to HER2-targeted therapy
#MMPMID26883193
Creedon H
; Gómez-Cuadrado L
; Tarnauskait? ?
; Balla J
; Canel M
; MacLeod KG
; Serrels B
; Fraser C
; Unciti-Broceta A
; Tracey N
; Le Bihan T
; Klinowska T
; Sims AH
; Byron A
; Brunton VG
Oncotarget
2016[Mar]; 7
(10
): 11539-52
PMID26883193
show ga
Resistance to human epidermal growth factor receptor 2 (HER2)-targeted therapies
in the treatment of HER2-positive breast cancer is a major clinical problem. To
identify pathways linked to resistance, we generated HER2-positive breast cancer
cell lines which are resistant to either lapatinib or AZD8931, two pan-HER family
kinase inhibitors. Resistance was HER2 independent and was associated with
epithelial-to-mesenchymal transition (EMT), resulting in increased proliferation
and migration of the resistant cells. Using a global proteomics approach, we
identified a novel set of EMT-associated proteins linked to HER2-independent
resistance. We demonstrate that a subset of these EMT-associated genes is
predictive of prognosis within the ERBB2 subtype of human breast cancers.
Furthermore, targeting the EMT-associated kinases Src and Axl potently inhibited
proliferation of the resistant cells, and inhibitors to these kinases may provide
additional options for the treatment of HER2-independent resistance in tumors.