4.5 Review

Deciphering signal transduction networks in the liver by mechanistic mathematical modelling

Journal

BIOCHEMICAL JOURNAL
Volume 479, Issue 12, Pages 1361-1374

Publisher

PORTLAND PRESS LTD
DOI: 10.1042/BCJ20210548

Keywords

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Funding

  1. German Ministry for Education (BMBF) within the LiSyM network [031L0042]
  2. LiSyM-Cancer network SMART-NAFLD [031L0256A]
  3. LiSyM-Cancer network C-TIP-HCC [031L0257C]
  4. Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) [272983813 - TRR 179]

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This article investigates the response of liver cells to cytokines and growth factors, with a specific focus on the regulation of growth factor receptors on the cell surface. The study suggests that mechanistic mathematical modeling based on quantitative data can help unravel these molecular-level interactions.
In health and disease, liver cells are continuously exposed to cytokines and growth factors. While individual signal transduction pathways induced by these factors were studied in great detail, the cellular responses induced by repeated or combined stimulations are complex and less understood. Growth factor receptors on the cell surface of hepatocytes were shown to be regulated by receptor interactions, receptor trafficking and feedback regulation. Here, we exemplify how mechanistic mathematical modelling based on quantitative data can be employed to disentangle these interactions at the molecular level. Crucial is the analysis at a mechanistic level based on quantitative longitudinal data within a mathematical framework. In such multi-layered information, step-wise mathematical modelling using submodules is of advantage, which is fostered by sharing of standardized experimental data and mathematical models. Integration of signal transduction with metabolic regulation in the liver and mechanistic links to translational approaches promise to provide predictive tools for biology and personalized medicine.

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