Glioblastoma is a brain tumor with a very poor prognosis, affecting around 2,400 new patients every year. Current treatments do not provide good control of the disease. In view of the therapeutic impasse, it is necessary to develop new strategies. CAR-T cells (Chimeric antigen receptor T cells) represent a highly promising therapy for the treatment of incurable cancers, including glioblastoma. This treatment aims to destroy cancer cells by relying on the patient's own immune system. CAR-T cells are generated from the patient's own immune cells, more specifically T lymphocytes, which are genetically modified to express a tumor-specific receptor on their surface. CAR-T cells bind to tumor cells and cause their destruction. However, these cells have shown limited therapeutic power in the treatment of brain tumors. This is mainly due to the microenvironment surrounding the tumor, which is composed of immunosuppressive cells. These cells, and the molecules they secrete, help to reduce the activity of CAR-T cells that would otherwise reach the tumor. Little is currently known about these resistance mechanisms. The aim of this research is therefore to better understand these resistance mechanisms in order to propose a strategy for enhancing the therapeutic action of CAR-T cells in the treatment of glioblastoma. The main objective of this research is to evaluate the impact of the tumor environment on the antitumor efficacy of anti-GD2 CAR-T therapeutic cells in an in vitro glioblastoma model. Both tumor environment cells and CAR-T therapeutic cells will be generated from glioblastoma patient cells. The secondary objectives of this research are to * Evaluate the impact of tumor environment targeting on the in vitro antitumor efficacy of anti-GD2 CAR-T therapeutic cells. * Evaluate the quality/quantity of generated cells (CAR-T cells and tumor environment cells) in relation to glioblastoma patients. * Evaluate the efficiency of the cell isolation technique (CAR-T cells and tumor environment cells)
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Quantification of the number of residual tumor cells after in vitro co-culture in presence of CAR-T and MDSC cells
Timeframe: 14 days after the blood sample realized at the inclusion visit
The percentage of proliferative effector cells
Timeframe: 14 days after the blood sample realized at the inclusion visit
The quantity of cytokines released
Timeframe: 14 days after the blood sample realized at the inclusion visit