Cited by 34Gene Regulatory Network AnalysisMathematical Biology Tumor GrowthPI3K/AKT/mTOR signaling in cancer

Cancerous perturbations within the ERK, PI3K/Akt, and Wnt/β-catenin signaling network constitutively activate inter-pathway positive feedback loops

Padala, Rahul Rao, Karnawat, Rishabh, Viswanathan, Satish Bharathwaj, Thakkar, Abhishek Vijay, Das, Asim Bikas·2017·Molecular BioSystems

Abstract

Perturbations in molecular signaling pathways are a result of genetic or epigenetic alterations, which may lead to malignant transformation of cells. Despite cellular robustness, specific genetic or epigenetic changes of any gene can trigger a cascade of failures, which result in the malfunctioning of cell signaling pathways and lead to cancer phenotypes. The extent of cellular robustness has a link with the architecture of the network such as feedback and feedforward loops. Perturbation in components within feedback loops causes a transition from a regulated to a persistently activated state and results in uncontrolled cell growth. This work represents the mathematical and quantitative modeling of ERK, PI3K/Akt, and Wnt/β-catenin signaling crosstalk to show the dynamics of signaling responses during genetic and epigenetic changes in cancer. ERK, PI3K/Akt, and Wnt/β-catenin signaling crosstalk networks include both intra and inter-pathway feedback loops which function in a controlled fashion in a healthy cell. Our results show that cancerous perturbations of components such as EGFR, Ras, B-Raf, PTEN, and components of the destruction complex cause extreme fragility in the network and constitutively activate inter-pathway positive feedback loops. We observed that the aberrant signaling response due to the failure of specific network components is transmitted throughout the network via crosstalk, generating an additive effect on cancer growth and proliferation.

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Crossref · 10.1039/c6mb00786d

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Authors
Padala, R. R., Karnawat, R., Viswanathan, S. B., Thakkar, A. V., & Das, A. B.
Affiliations
National Institute of Technology Warangal (IN)
Corresponding author
Das, Asim Bikas
Venue
Molecular BioSystems
Published
2017-03-24
Volume
13
Issue
5
Pages
830-840
ISSN
  • 1742-2051 (ISSN-L)
  • 1742-206X
OpenAlex
W2597995360
Cited by
33
References
86
Citations by year
2026: 2 · 2025: 1 · 2024: 5 · 2023: 1 · 2022: 3 · 2021: 7 · 2020: 1 · 2019: 7 · 2018: 4 · 2017: 2
FWCI
1.56
Type
journal article
Language
en
Open access
closed
Locations
  • Molecular BioSystems (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gene Regulatory Network Analysis
  • Physical Sciences › Mathematics › Modeling and Simulation › Mathematical Biology Tumor Growth
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › PI3K/AKT/mTOR signaling in cancer
Keywords
ERK signaling, PI3K/Akt signaling, Wnt/β-catenin signaling, positive feedback loop, network fragility, cancer, EGFR, Ras, BRAF, PTEN, network dynamics, mathematical modeling of signaling
MeSH terms
Humans, Models, Theoretical, Neoplasms, Genetic Variation, Gene Expression Regulation, Neoplastic, Computational Biology, Phosphatidylinositol 3-Kinases, MAP Kinase Signaling System, Feedback, Physiological, Epigenesis, Genetic, Proto-Oncogene Proteins c-akt, Gene Regulatory Networks, Wnt Signaling Pathway

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