A synthetic biology approach to engineering exhaustion-free T cell therapies. Uncovering and counteracting biomechanical triggers of T cell dysfunction in the tumour microenvironment.

Informations projet

Tex-Mex

N° de convention de subvention: 101030034

DOI

10.3030/101030034

Projet clôturé le 31 Juillet 2022

Date de signature de la CE 13 Mars 2021

Date de début 15 Juillet 2021

Date de fin 4 Octobre 2023

Financé au titre de

• EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions

Coût total

€ 171 473,28

Contribution de l’UE

€ 171 473,28

Coordonné par

FONDAZIONE ISTITUTO ITALIANO DI TECNOLOGIA
Italy

Periodic Reporting for period 1 - Tex-Mex (A synthetic biology approach to engineering exhaustion-free T cell therapies. Uncovering and counteracting biomechanical triggers of T cell dysfunction in the tumour microenvironment.)

Période du rapport: 2021-07-15 au 2023-07-14

Résumé du contexte et des objectifs généraux du projet

Cancer is the second leading cause of death in the EU, accounting for 1.4 million deaths and 3 million new cases in 2018, with an estimated healthcare cost of €130 billion each year. Cancer is also one of the five priority mission areas of Horizon Europe 2021-2027. Chimeric antigen receptor (CAR) T cell therapy is a ground-breaking cancer treatment that has demonstrated striking results in fighting blood cancers. However, T cell exhaustion, a process that results in the progressive development of lymphocyte dysfunction due to prolonged antigen stimulation in cancer, chronic inflammation or infection, has been a major obstacle in translating CAR T cell treatments to solid tumours.

Inflamed organs and solid tumour growth result in microenvironments for T cells that are not only biochemically, but also biomechanically distinct from physiologic conditions. Notably, the tumour microenvironment is characterized by increased stiffness, which is thought to correlate with malignancy, and high interstitial pressures. While biochemical pathways for exhaustion have received a lot of attention, potential biomechanical effects of the tumour microenvironment on T cell dysfunction are understudied. Biomechanical cues such as stiffness are widely understood to have an effect in the process of T cell activation, mediated by the mechanosensitivity of the T cell receptor (TCR), suggesting that long-term biomechanical effects on the development of T cell exhaustion are plausible. This Marie Sklodowska-Curie Actions project strives to elucidate the interplay between T cell exhaustion and the tumor biomechanical environment.

Travail effectué depuis le début du projet jusqu’à la fin de la période considérée dans le rapport et principaux résultats atteints jusqu’à présent

In the course of the project, I have developed an in vitro material model for the study of biomechanical contributions to the development of T cell exhaustion. Preliminary results demonstrate a possible influence of the stiffness of substrates on the development of exhaustion but additional work, through a collaboration, is under way to replicate and further characterise this effect.

Progrès au-delà de l’état des connaissances et impact potentiel prévu (y compris l’impact socio-économique et les conséquences sociétales plus larges du projet jusqu’à présent)

Elucidating the biomechanical effect on T cell exhaustion is an important contribution to the field that could lead to the development of more targeted therapeutic strategies. Specifically, new synthetic biology approaches based on mechanical sensing could enable specifically counteracting exhaustion in the tumour microenvironment, minimising the risk of off target effects. For example, in the future, ultra-specific biomechanosensor-actuator devices could be engineered combining "mechanosensors" with biosensors to prevent the development of exhaustion in tissues with specific mechanical properties. This could thus improve the effectiveness of cell-based cancer therapeutics by improving the specificity of genetic devices.

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