Combined logical and data-driven models for linking signalling pathways to cellular response

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Combined logical and data-driven models for linking signalling pathways to cellular response (EN)

Melas, IN (EN)
Weiss, TS (EN)
Alexopoulos, LG (EN)
Mitsos, A (EN)
Messinis, DE (EN)

journalArticle (EN)

2014-03-01T01:35:25Z
2011 (EN)


Background: Signalling pathways are the cornerstone on understanding cell function and predicting cell behavior. Recently, logical models of canonical pathways have been optimised with high-throughput phosphoproteomic data to construct cell-type specific pathways. However, less is known on how signalling pathways can be linked to a cellular response such as cell growth, death, cytokine secretion, or transcriptional activity.Results: In this work, we measure the signalling activity (phosphorylation levels) and phenotypic behavior (cytokine secretion) of normal and cancer hepatocytes treated with a combination of cytokines and inhibitors. Using the two datasets, we construct ""extended"" pathways that integrate intracellular activity with cellular responses using a hybrid logical/data-driven computational approach. Boolean logic is used whenever a priori knowledge is accessible (i.e., construction of canonical pathways), whereas a data-driven approach is used for linking cellular behavior to signalling activity via non-canonical edges. The extended pathway is subsequently optimised to fit signalling and behavioural data using an Integer Linear Programming formulation. As a result, we are able to construct maps of primary and transformed hepatocytes downstream of 7 receptors that are capable of explaining the secretion of 22 cytokines.Conclusions: We developed a method for constructing extended pathways that start at the receptor level and via a complex intracellular signalling pathway identify those mechanisms that drive cellular behaviour. Our results constitute a proof-of-principle for construction of ""extended pathways"" that are capable of linking pathway activity to diverse responses such as growth, death, differentiation, gene expression, or cytokine secretion. © 2011 Melas et al; licensee BioMed Central Ltd. (EN)

Mathematical & Computational Biology (EN)

Signalling Pathway (EN)
High Throughput (EN)
HEPATOCYTES (EN)
ACTIVATION (EN)
TRANSDUCTION (EN)
Integer Linear Program (EN)
TUMOR-CELLS (EN)
NETWORKS (EN)
CANCER (EN)
Differential Gene Expression (EN)
Proof of Principle (EN)
GROWTH-FACTOR RECEPTOR (EN)
HEPATOCELLULAR-CARCINOMA (EN)
a priori knowledge (EN)
Hybrid Logic (EN)
INFLAMMATION (EN)
Cell Growth (EN)
TYROSINE KINASE INHIBITOR (EN)

BMC Systems Biology (EN)

Αγγλική γλώσσα

BIOMED CENTRAL LTD (EN)




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