Lymph node-biomimetic scaffold boosts CAR-T therapy against solid tumor
Ontology highlight
ABSTRACT:
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PROVIDER: S-EPMC10911814 | biostudies-literature | 2024 Jan
REPOSITORIES: biostudies-literature
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Project description:Chimeric antigen receptor (CAR)-natural killer (NK) cell therapies hold promise for solid tumors but remain limited by poor tumor infiltration, persistence, and resistance within the tumor microenvironment (TME). To identify gain-of-function (GOF) targets that enhance CAR-NK efficacy, we performed an unbiased in vivo Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR) activation (CRISPRa) screen, followed by a barcoded targeted in vivo open reading frame (ORF) screen in primary human CAR-NK cells. We identified, and robustly validated OR7A10, a G protein-coupled receptor (GPCR), as the top candidate. Engineering CAR-NKs with OR7A10 cDNA, a CRISPR-independent method with simple manufacturing strategy, enhanced proliferation, activation, degranulation, cytokine production, death ligand expression, chemokine receptor expression, cytotoxicity, persistence, metabolic fitness, and TME resistance, while reducing exhaustion in primary human NK cells derived from multiple peripheral blood and cord blood donors. OR7A10-GOF CAR-NKs displayed robust in vivo efficacy across multiple solid tumor models, achieving a 100% complete response in an orthotopic breast cancer model with long term tumor control and survival benefit. These findings establish OR7A10-engineered CAR-NKs as a highly potent and scalable off-the-shelf therapeutic for solid tumors.
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Project description:Chimeric antigen receptor (CAR)-natural killer (NK) cell therapies hold promise for solid tumors but remain limited by poor tumor infiltration, persistence, and resistance within the tumor microenvironment (TME). To identify gain-of-function (GOF) targets that enhance CAR-NK efficacy, we performed an unbiased in vivo Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR) activation (CRISPRa) screen, followed by a barcoded targeted in vivo open reading frame (ORF) screen in primary human CAR-NK cells. We identified, and robustly validated OR7A10, a G protein-coupled receptor (GPCR), as the top candidate. Engineering CAR-NKs with OR7A10 cDNA, a CRISPR-independent method with simple manufacturing strategy, enhanced proliferation, activation, degranulation, cytokine production, death ligand expression, chemokine receptor expression, cytotoxicity, persistence, metabolic fitness, and TME resistance, while reducing exhaustion in primary human NK cells derived from multiple peripheral blood and cord blood donors. OR7A10-GOF CAR-NKs displayed robust in vivo efficacy across multiple solid tumor models, achieving a 100% complete response in an orthotopic breast cancer model with long term tumor control and survival benefit. These findings establish OR7A10-engineered CAR-NKs as a highly potent and scalable off-the-shelf therapeutic for solid tumors.
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Project description:Chimeric antigen receptor (CAR)-natural killer (NK) cell therapies hold promise for solid tumors but remain limited by poor tumor infiltration, persistence, and resistance within the tumor microenvironment (TME). To identify gain-of-function (GOF) targets that enhance CAR-NK efficacy, we performed an unbiased in vivo Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR) activation (CRISPRa) screen, followed by a barcoded targeted in vivo open reading frame (ORF) screen in primary human CAR-NK cells. We identified, and robustly validated OR7A10, a G protein-coupled receptor (GPCR), as the top candidate. Engineering CAR-NKs with OR7A10 cDNA, a CRISPR-independent method with simple manufacturing strategy, enhanced proliferation, activation, degranulation, cytokine production, death ligand expression, chemokine receptor expression, cytotoxicity, persistence, metabolic fitness, and TME resistance, while reducing exhaustion in primary human NK cells derived from multiple peripheral blood and cord blood donors. OR7A10-GOF CAR-NKs displayed robust in vivo efficacy across multiple solid tumor models, achieving a 100% complete response in an orthotopic breast cancer model with long term tumor control and survival benefit. These findings establish OR7A10-engineered CAR-NKs as a highly potent and scalable off-the-shelf therapeutic for solid tumors.
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Project description:OR7A10 GPCR engineering boosts CAR-NK therapy against solid tumors
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