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Despite advances in anti-amyloid immunotherapies, important limitations remain, highlighting the need for new therapeutic strategies. Here, we introduce anti-amyloid chimeric antigen receptors expressed in astrocytes (CAR-A) and validate their function in vitro. We show that two CAR-A designs reduce amyloid and associated pathology after plaque formation and prevent early plaque deposition in vivo. Single-nucleus RNA sequencing shows that CAR-A treatment induces a distinct glial response to amyloid pathology involving coordinated activity of astrocytes and microglia. Each construct additionally elicits distinctive, receptor-specific effects in astrocytes or microglia. 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