Related Experiment Video
Updated: Jan 15, 2026

A Combined 3D Tissue Engineered In Vitro/In Silico Lung Tumor Model for Predicting Drug Effectiveness in Specific Mutational Backgrounds
Published on: April 6, 2016
Constraint based modeling of drug induced metabolic changes in a cancer cell line
Xavier Benedicto1, Åsmund Flobak2,3,4, Miguel Ponce-de-Leon5
1Barcelona Supercomputing Center (BSC), Barcelona, Spain.
Abstract:
Cancer cells frequently reprogramme their metabolism to support growth and survival, making metabolic pathways attractive targets for therapy. In this study, we investigated the metabolic effects of three kinase inhibitors and their synergistic combinations in the gastric cancer cell line AGS using genome-scale metabolic models and transcriptomic profiling. We applied the tasks inferred from the differential expression (TIDE) algorithm to infer pathway activity changes in the different conditions. We also explored a variant of TIDE that uses task-essential genes to infer metabolic task changes, providing a complementary perspective to the original algorithm. Our results revealed widespread down-regulation of biosynthetic pathways, particularly in amino acid and nucleotide metabolism. Combinatorial treatments induced condition-specific metabolic alterations, including strong synergistic effects in the PI3Ki-MEKi condition affecting ornithine and polyamine biosynthesis. These metabolic shifts provide insight into drug synergy mechanisms and highlight potential therapeutic vulnerabilities. To support reproducibility, we developed an open-source Python package, MTEApy, implementing both TIDE frameworks.
Insights
This study reveals how cancer cells alter metabolism to survive. Combining kinase inhibitors affects specific metabolic pathways, offering new therapeutic strategies for gastric cancer and highlighting drug synergy mechanisms.
Area of Science:
- Metabolic reprogramming in cancer
- Cancer cell metabolism and therapy
Background:
- Cancer cells exhibit altered metabolism to fuel growth and survival.
- Metabolic pathways are promising therapeutic targets in oncology.
- Gastric cancer presents a significant clinical challenge.
Purpose of the Study:
- To investigate the metabolic effects of kinase inhibitors and their combinations in gastric cancer cells.
- To identify synergistic drug combinations targeting cancer metabolism.
- To explore metabolic pathway activity using computational methods.
Main Methods:
- Utilized genome-scale metabolic models and transcriptomic profiling of the AGS gastric cancer cell line.
- Applied the Tasks Inferrred from Differential Expression (TIDE) algorithm and a variant using task-essential genes.
- Analyzed metabolic pathway activity changes under various drug treatment conditions.
Main Results:
- Observed widespread down-regulation of biosynthetic pathways, especially in amino acid and nucleotide metabolism.
- Identified condition-specific metabolic alterations induced by combinatorial treatments.
- Found synergistic effects in the PI3K inhibitor-MEK inhibitor (PI3Ki-MEKi) condition impacting ornithine and polyamine biosynthesis.
Conclusions:
- Metabolic shifts provide insights into mechanisms of drug synergy in gastric cancer.
- Identified potential therapeutic vulnerabilities related to metabolic pathways.
- Developed MTEApy, an open-source Python package for TIDE analysis, to enhance reproducibility.
Related Concept Videos
Treatment Resistant Cancers
Combination Therapies and Personalized Medicine
The combination of the drug acetazolamide and sulforaphane is a good example of combination therapy to treat cancer. The cells in the interior of a large tumor often die due to the hypoxic and...
Pharmacokinetic Models: Comparison and Selection Criterion
Physiological models take a detailed approach by considering specific molecular processes. They can predict drug distribution, metabolism, and elimination changes, providing a comprehensive understanding of how drugs interact with the body.
Adaptive Mechanisms in Cancer Cells
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Pharmacokinetic Models: Overview
There are three primary types of models: empirical, compartment, and physiological. Empirical models, with minimal...
Model Approaches for Pharmacokinetic Data: Distributed Parameter Models
The distributed parameter models are specifically designed to account for variations and differences in some drug classes. This model is particularly useful for assessing regional concentrations of anticancer or...

