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Overexpression of FOXO1 enhances CAR T cell polyfunctionality, metabolic fitness and efficacy against solid tumors [Human ATACseq CD8]

ABSTRACT: Investigating the effect on CAR T cell phenotype by overexpressing FOXO1

ORGANISM(S): Homo sapiens

PROVIDER: GSE225521 | GEO | 2024/01/18

REPOSITORIES: GEO

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Overexpression of FOXO1 enhances CAR T cell polyfunctionality, metabolic fitness and efficacy against solid tumors [Mouse RNAseq]

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FOXO1 enhances CAR T cell stemness, metabolic fitness and efficacy [human_FOXO1OE_stimulation/rest_RNAseq]

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Overexpression of FOXO1 enhances CAR T cell polyfunctionality, metabolic fitness and efficacy against solid tumors

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GLUT1 overexpression enhances CAR T cell metabolic fitness and anti-tumor efficacy

Project description:The tumor microenvironment presents many obstacles to effective CAR T cell therapy, including glucose competition from tumor and myeloid cells. Using mouse models of acute lymphoblastic leukemia (ALL), renal cell carcinoma (RCC), and glioblastoma (GBM), we show that enforced expression of the glucose transporter GLUT1 enhances anti-tumor efficacy and promotes favorable CAR T cell phenotypes for two clinically relevant CAR designs, 19-28z and IL13Ra2-BBz. In the NALM6 ALL model, 19-28z-GLUT1 promotes Tscm formation and prolongs survival. RNA sequencing of these CAR T cells reveals that overexpression of GLUT1, but not GLUT3, enriches for genes involved in glycolysis, mitochondrial respiration, and memory precursor phenotypes. Extending these data, 19-28z-GLUT1 CAR T cells improve tumor control and response to rechallenge in an RCC patient derived xenograft model. Furthermore, IL13Ra2-BBz CAR T cells overexpressing GLUT1 prolong survival of mice bearing orthotopic GBMs and exhibit decreased exhaustion markers. This novel engineering approach can offer a competitive advantage to CAR T cells in harsh tumor environments where glucose is limiting.

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FOXO1 is a master regulator of CAR T memory programming [ATAC_FOXO1_OE]

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