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Releasing the mitochondrial respiration brake MCJ/DnaJC15 enhances CD8 CAR-T cell therapy efficacy

ABSTRACT: Releasing the mitochondrial respiration brake MCJ/DnaJC15 enhances CD8 CAR-T cell therapy efficacy

PROVIDER: PRJNA1096360 | ENA |

REPOSITORIES: ENA

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Releasing the mitochondrial respiration brake MCJ/DnaJC15 enhances CD8 CAR-T cell therapy efficacy

Project description:Metabolism of chimeric antigen receptor (CAR) T cells is emerging as an important area to improve CAR-T cell therapy in cancer treatment. Mitochondrial respiration is essential for survival and function of CAR-T cells, but developing strategies to specifically enhance mitochondrial respiration has been challenging. Here we identify MCJ/DnaJC15, an endogenous negative regulator of mitochondrial Complex I, as a metabolic target to enhance mitochondrial respiration in CD8 CAR-T cells. Loss of MCJ in CD8 CAR-T cells increases their in vitro and in vivo efficacy against mouse B cell leukemias. MCJ deficiency in TCR- specific CD8 cells also increases their efficacy against solid tumors in vivo. Furthermore, we reveal that human CD8 cells express MCJ and that silencing MCJ expression increases mitochondrial metabolism and anti-tumor activity of human CAR-T cells. Thus, we demonstrate the unique therapeutic potential of targeting MCJ to enhance the metabolism and efficacy of adoptive T cell therapies.

2024-05-02 | GSE263259 | GEO

Enterococcus faecalis strain:MCJ

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Histone Deacetylase 3 is an Epigenomic Brake in Macropahge Alternative Activation

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An immunoproteomic approach to characterize the CAR interactome and signalosome

Project description:Adoptive transfer of chimeric antigen receptor (CAR)-T cells is expected to become the first line of treatment for multiple malignancies, following the enormous success of anti-CD19 therapies. However, their mechanism of action is not fully understood, and clear guidelines for the design of safe and efficient receptors are missing. We hereby describe a systematic analysis of the CAR “signalosome” in human primary T cells. Two CAR designs were compared: a second-generation (PSCA2) and a third-generation (PSCA3) anti-PSCA CAR. Phosphorylation events triggered by CAR-mediated recognition of target cells were quantified by mass spectrometry.

2019-11-07 | PXD007086 | Pride

Bulk mRNA Seq CAR.CCR7 vs. CAR

Project description:The study aimed to elucidate the transcriptional changes introduced by genetic engineering of CAR T cells to stably express the homeostatic chemokine receptor CCR7. In vitro killing assays hinted to a higher cytolytic capacity that could be tied to an altered cytoskeletal rearrangement. Human CAR and CAR.CCR7 T cells were generated by retroviral transduction and enriched by FACS at the end of the expansion phase (day 10), either without or with a previous over-night co-culture with target Jeko1 tumor cells that express the CAR target antigen CXCR5. Enriched cells were immediately processed for bulk mRNA Seq

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