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2017 ; 3
(ä): 2
Nephropedia Template TP
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Neighbours of cancer-related proteins have key influence on pathogenesis and
could increase the drug target space for anticancer therapies
#MMPMID28603644
Módos D
; Bulusu KC
; Fazekas D
; Kubisch J
; Brooks J
; Marczell I
; Szabó PM
; Vellai T
; Csermely P
; Lenti K
; Bender A
; Korcsmáros T
NPJ Syst Biol Appl
2017[Jan]; 3
(ä): 2
PMID28603644
show ga
Even targeted chemotherapies against solid cancers show a moderate success
increasing the need to novel targeting strategies. To address this problem, we
designed a systems-level approach investigating the neighbourhood of mutated or
differentially expressed cancer-related proteins in four major solid cancers
(colon, breast, liver and lung). Using signalling and protein-protein interaction
network resources integrated with mutational and expression datasets, we analysed
the properties of the direct and indirect interactors (first and second
neighbours) of cancer-related proteins, not found previously related to the given
cancer type. We found that first neighbours have at least as high degree,
betweenness centrality and clustering coefficient as cancer-related proteins
themselves, indicating a previously unknown central network position. We
identified a complementary strategy for mutated and differentially expressed
proteins, where the affect of differentially expressed proteins having smaller
network centrality is compensated with high centrality first neighbours. These
first neighbours can be considered as key, so far hidden, components in cancer
rewiring, with similar importance as mutated proteins. These observations
strikingly suggest targeting first neighbours as a novel strategy for disrupting
cancer-specific networks. Remarkably, our survey revealed 223 marketed drugs
already targeting first neighbour proteins but applied mostly outside oncology,
providing a potential list for drug repurposing against solid cancers. For the
very central first neighbours, whose direct targeting would cause several side
effects, we suggest a cancer-mimicking strategy by targeting their interactors
(second neighbours of cancer-related proteins, having a central protein affecting
position, similarly to the cancer-related proteins). Hence, we propose to include
first neighbours to network medicine based approaches for (but not limited to)
anticancer therapies.