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CAR T cells Rewired to prevent EXhaustion in the tumour microenvironment

Project description

Improving CAR T therapy

Chimeric Antigen Receptor (CAR) T lymphocytes have emerged as a new way to treat cancer, demonstrating significant efficacy against certain haematological malignancies. Evidence so far demonstrates their limited effectiveness against solid tumours, mainly because CAR T-cells tend to become exhausted and less effective in the tumour microenvironment. Funded by the European Innovation Council, the CAR T-REX project aims to circumvent this issue by introducing a genetic circuit into CAR T-cells. This will be accomplished via the incorporation of artificial miRNAs known to downregulate target genes responsible for exhaustion. The project has the potential to improve the efficacy and specificity of cell-based immunotherapies.

Objective

Although immunotherapy of select hematological malignancies using Chimeric Antigen Receptor (CAR) redirected T lymphocytes has recently gained regulatory approval, successful treatment of solid tumors using CAR T cells remains elusive. One salient problem is the limited efficacy and untimely exhaustion of CAR T cells in the tumor microenvironment (TME).
Combining innovative methods of genome editing, chemistry and immunology, CAR T-REX proposes to explore a novel concept of building auto-regulated genetic circuits into CAR T cells to selectively circumvent their exhaustion upon activation in the TME. Genetic rewiring will be achieved by precisely inserting artificial miRNAs under endogenous exhaustion-related “Driver” promoters to downregulate “Target” genes that cause exhaustion. Proprietary technology enables specific replacement of the “Driver” gene without risking off-target mutations. Further advantages of combined insertion and silencing are (i) the ability to regulate when a gene is turned on/off by biologically and clinically relevant cellular cues, and (ii) multiple gene-knockdown with a single dsDNA cleavage and RNA-silencing of both alleles. These genetic modifications will be implemented using a novel high-performance peptide-based gene delivery platform with unlimited loading capacity, allowing combination of several types of cargo, as well as economical large scale GMP production. Rewired HER2/Neu (ErbB2) redirected CAR T cells will be tested on preclinical breast and gastric carcinomas, and variants that eliminate tumors resistant to conventional 2nd and 3rd generation peers (without adverse events) will be developed/manufactured following quality-by-design principles under GMP-like conditions, thus accelerating the pathway towards clinical translation. These approaches will also constitute a proof-of-concept for modifying therapeutic cell products, with the potential to considerably improve their safety, specificity, efficacy, scalability and cost.

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Keywords

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Programme(s)

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Topic(s)

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Funding Scheme

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HORIZON-EIC - HORIZON EIC Grants

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Call for proposal

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(opens in new window) HORIZON-EIC-2022-PATHFINDEROPEN-01

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Coordinator

STEMMATTERS, BIOTECNOLOGIA E MEDICIINA REGENERATIVA SA
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 783 240,00
Address
PARQUE DE CIENCIA E TECNOLOGIA AVEPARK ZONA INDUSTRIAL DA GANDRA
4805-017 Barco Gmr
Portugal

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SME

The organization defined itself as SME (small and medium-sized enterprise) at the time the Grant Agreement was signed.

Yes
Region
Continente Norte Ave
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
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Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

€ 783 240,00

Participants (4)

Partners (1)

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