CAR macrophages with built-In CD47 blocker combat tumor antigen heterogeneity and activate T cells via cross-presentation
Abstract Macrophage-based cancer cellular therapy has gained substantial interest. However, the capability of engineered macrophages to target cancer heterogeneity and modulate adaptive immunity remains unclear. Here, exploiting the myeloid antibody-dependent cellular phagocytosis biology and phagoc...
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| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2025-04-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-59326-9 |
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| Summary: | Abstract Macrophage-based cancer cellular therapy has gained substantial interest. However, the capability of engineered macrophages to target cancer heterogeneity and modulate adaptive immunity remains unclear. Here, exploiting the myeloid antibody-dependent cellular phagocytosis biology and phagocytosis checkpoint blockade, we report the enhanced synthetic phagocytosis receptor (eSPR) that integrate FcRγ-driven phagocytic chimeric antigen receptors (CAR) with built-in secreted CD47 blockers. The eSPR engineering empowers macrophages to combat tumor antigen heterogeneity. Transduced by adenoviral vectors, eSPR macrophages are intrinsically pro-inflammatory imprinted and resist tumoral polarization. Transcriptomically and phenotypically, eSPR macrophages elicit a more favorable tumor immune landscape. Mechanistically, eSPR macrophages in situ stimulate CD8 T cells via phagocytosis-dependent antigen cross-presentation. We also validate the functionality of the eSPR system in human primary macrophages. |
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| ISSN: | 2041-1723 |