# Mathematical modeling of hypoxia and adenosine to explore tumor escape mechanisms in DC-based immunotherapy

## TL;DR

This paper uses mathematical models to study how hypoxia and adenosine help tumors escape immunotherapy, aiming to improve treatment strategies.

## Contribution

The first use of mathematical models to explore hypoxia and adenosine's roles in tumor escape during DC-based immunotherapy.

## Key findings

- Adenosine significantly impacts immunotherapy efficacy, with its suppression potentially enhancing treatment outcomes.
- Mathematical models reveal how hypoxia and adenosine contribute to tumor escape mechanisms.
- Optimized vaccination protocols can minimize tumor growth based on model predictions.

## Abstract

Identifying and controlling tumor escape mechanisms is crucial for improving cancer treatment effectiveness. Experimental studies reveal tumor hypoxia and adenosine as significant contributors to such mechanisms. Hypoxia exacerbates adenosine levels in the tumor microenvironment. Combining inhibition of these factors with dendritic cell (DC)-based immunotherapy promises improved clinical outcomes. However, challenges include understanding dynamics, optimal vaccine dosages, and timing. Mathematical models, including agent-based, diffusion, and ordinary differential equations, address these challenges. Here, we employ these models for the first time to elucidate how hypoxia and adenosine facilitate tumor escape in DC-based immunotherapy. After parameter estimation using experimental data, we optimize vaccination protocols to minimize tumor growth. Sensitivity analysis highlights adenosine’s significant impact on immunotherapy efficacy. Its suppressive role impedes treatment success, but inhibiting adenosine could enhance therapy, as suggested by the model. Our findings shed light on hypoxia and adenosine-mediated tumor escape mechanisms, informing future treatment strategies. Additionally, identifiability analysis confirms accurate parameter determination using experimental data.