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2018 ; 9
(49
): 29123-29139
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Integrative landscape of dysregulated signaling pathways of clinically distinct
pancreatic cancer subtypes
#MMPMID30018740
Sinkala M
; Mulder N
; Martin DP
Oncotarget
2018[Jun]; 9
(49
): 29123-29139
PMID30018740
show ga
Despite modern therapeutic advances, the survival prospects of pancreatic cancer
patients have remained poor. Besides being highly metastatic, pancreatic cancer
is challenging to treat because it is caused by a heterogeneous array of somatic
mutations that impact a variety of signaling pathways and cellular regulatory
systems. Here we use publicly available transcriptomic, copy number alteration
and mutation profiling datasets from pancreatic cancer patients together with
data on disease outcomes to show that the three major pancreatic cancer subtypes
each display distinctive aberrations in cell signaling and metabolic pathways.
Importantly, patients afflicted with these different pancreatic cancer subtypes
also exhibit distinctive survival profiles. Within these patients, we find that
dysregulation of the phosphoinositide 3-kinase and mitogen-activated protein
kinase pathways, and p53 mediated disruptions of cell cycle processes are
apparently drivers of disease. Further, we identify for the first time the
molecular perturbations of signalling networks that are likely the primary causes
of oncogenesis in each of the three pancreatic cancer subtypes.