UCSF researchers developed B-SYNC, a preclinical CAR T-cell platform that uses brain-associated brevican to trigger tumor-targeting CAR expression.
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After sensing brevican, B-SYNC cells target either EphA2 or IL-13Rα2, antigens associated with diffuse midline glioma.
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In mouse models, intravenous B-SYNC treatment produced complete tumor regression in 7 of 14 and 4 of 11 animals across two models.
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Ventricular administration eliminated tumors in all 19 treated mice across two models, and surviving animals resisted tumor rechallenge.
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A B7-H3-targeting circuit caused fatal neurotoxicity in mice, while a modified circuit cleared tumors without detectable neurotoxicity; dosing and safety need further study.
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