Abstract |
Metastatic melanoma remains a life-threatening disease because most tumors develop resistance to targeted kinase inhibitors thereby regaining tumorigenic capacity. We show the 2nd generation hexavalent TRAIL receptor-targeted agonist IZI1551 to induce pronounced apoptotic cell death in mutBRAF melanoma cells. Aiming to identify molecular changes that may confer IZI1551 resistance we combined Dynamic Bayesian Network modelling with a sophisticated regularization strategy resulting in sparse and context-sensitive networks and show the performance of this strategy in the detection of cell line-specific deregulations of a signalling network. Comparing IZI1551-sensitive to IZI1551-resistant melanoma cells the model accurately and correctly predicted activation of NFκB in concert with upregulation of the anti-apoptotic protein XIAP as the key mediator of IZI1551 resistance. Thus, the incorporation of multiple regularization functions in logical network optimization may provide a promising avenue to assess the effects of drug combinations and to identify responders to selected combination therapies.
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Authors | Greta Del Mistro, Philippe Lucarelli, Ines Müller, Sébastien De Landtsheer, Anna Zinoveva, Meike Hutt, Martin Siegemund, Roland E Kontermann, Stefan Beissert, Thomas Sauter, Dagmar Kulms |
Journal | NPJ systems biology and applications
(NPJ Syst Biol Appl)
Vol. 4
Pg. 39
( 2018)
ISSN: 2056-7189 [Print] England |
PMID | 30416750
(Publication Type: Journal Article)
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