# GLUT5 armouring enhances adoptive T-cell therapy anti-tumour activity under glucose-limiting conditions

## TL;DR

T cells modified to use fructose instead of glucose show better anti-tumor activity in low-glucose environments, potentially improving cancer immunotherapy for solid tumors.

## Contribution

Introducing GLUT5-armored T cells that utilize fructose to overcome glucose scarcity in solid tumors.

## Key findings

- GLUT5-armored T cells show enhanced anti-tumor activity in low-glucose conditions.
- The modification works with both CAR and TCR T cells in vitro and in vivo.
- This approach is compatible with existing clinical T-cell therapy methods.

## Abstract

Cancer immunotherapy with engineered T cells has become a standard treatment for certain haematological cancers. However, clinical trial outcomes for solid tumours are significantly lagging. A primary challenge in solid tumours is the lack of essential metabolites in the tumour microenvironment, such as glucose, due to poor vascularization and competition with tumour cells.

To address this, we modified T cells to use fructose as an alternative energy source by introducing ectopic GLUT5 expression.

We show that “GLUT5-armored” T cells, engineered with either chimeric antigen receptors (CARs) or an ectopic T-cell receptor (TCR), achieve enhanced anti-tumour activity in low-glucose environments in both in vitro and in vivo models.

This straightforward modification is compatible with current clinical approaches and may improve the efficacy of T-cell therapies for solid tumours.

Graphical Abstract