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Harnessing senescence to improve cell-based therapies against cancer

Project description

Insight into senescence for improved immunotherapy

Senescence is a biological process characterised by stable cell cycle arrest, where damaged or stressed cells lose their ability to divide and function properly. While senescence serves as a protective mechanism to prevent the proliferation of potentially harmful cells, the accumulation of senescent cells in tissues can contribute to age-related diseases and disrupt normal tissue function. The ERC-funded EXPLOITsen project aims to harness the unique features of senescent cells to enhance therapeutic outcomes in solid tumours. The idea is to develop chimeric antigen receptor (CAR) T and natural killer cell therapies that are resistant to senescence-inducing treatments and can persist in a senescent environment.

Objective

Senescence is a two-component process comprised of a stable cell cycle arrest and a secretory program named the senescence associated secretory phenotype (SASP), altering the surrounding microenvironment. The program serves as a tumor suppressive mechanism inhibiting the propagation of damaged cells, but the accumulation of senescent cells has been connected to multiple age-associated diseases including cancer. Consequently, senescence induction in tumors is not considered a desired therapeutic outcome. Still, therapeutic strategies to treat cancer such as chemotherapy, targeted therapy and radiotherapy induce senescence at least in a subset of cancer cells. We here propose to exploit the specific features of senescent cells in the cancer microenvironment to improve therapeutic outcome in solid tumors. This strategy revolves around the combination of senescence induction with chimeric antigen receptor (CAR) T and NK cells. We will first assess the role of specific genetic alterations for the senescence program and resulting reciprocal interactions with CAR expressing immune cells. The gained knowledge will be translated into rational designs of CAR T and NK cells to tailor them to the specific senescence context. Furthermore, our strategies involve innovative screening and gene editing approaches of these cellular based therapies to 1) render them resistant against senescence-inducing therapies, thereby uncoupling desired toxic effects on tumor cells from undesired negative effects on immune cells; and 2) to identify single nucleotide variants leading to improved functional persistence of CAR T cells in the senescence context. Successful completion will lead to promising new therapeutic avenues for a wide variety of malignancies. More broadly, it will result in deeper mechanistic insights into T and NK cell biology as well as immune surveillance mechanisms of senescent and non-senescent tumor cells.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-ERC - HORIZON ERC Grants

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Call for proposal

(opens in new window) ERC-2024-STG

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Host institution

EBERHARD KARLS UNIVERSITAET TUEBINGEN
Net EU contribution
€ 1 499 975,00
Address
GESCHWISTER-SCHOLL-PLATZ
72074 Tuebingen
Germany
Region
Baden-Württemberg Tübingen Tübingen, Landkreis
Activity type
Higher or Secondary Education Establishments
Links
Total cost
€ 1 499 975,00

Beneficiaries (1)