To develop a model that captures the continuous and heterogeneous nature of cancer cell dormancy and its impact on tumor-immune dynamics.
Approach:
Model Development: Introduced an ERK-p38-structured model of cancer-immune interactions, allowing for continuous stratification of tumor cells along an ERK/p38 phenotypic axis.
Mechanistic Insight: Derived a reduced model to identify critical thresholds in the mean ERK/p38 phenotype that influence tumor fate.
Key Findings:
The distribution of tumor phenotypes influences tumor-immune dynamics, leading to elimination, equilibrium, or escape.
Increased p38 activation in response to immune pressure promotes immune evasion.
Stress-induced p38 signaling drives global tumor dormancy.
p38 inhibition shifts phenotype distribution towards more proliferative states, enhancing tumor sensitivity to immune-mediated killing.
Interpretation:
Phenotypic plasticity is a crucial regulator of immunoediting, linking intracellular signaling to immune-driven tumor dynamics.
Limitations:
The model may not account for all biological complexities of tumor-immune interactions.
Further validation is needed to confirm predictions in clinical settings.
Conclusion:
The study provides a quantitative framework for understanding the role of phenotypic variability in tumor dormancy and immune evasion.
