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ERMAP activates phagocytosis in Kupffer cells to restrict liver metastases

Kupffer cells, hepatic resident macrophages, are the first line of defense against liver metastases by engulfing disseminated malignant cells. We found that ERMAP expressed on tumor cells binds to galectin-9 and dectin-2 on Kupffer cells to deliver pro-phagocytosis ‘eat me’ signals to Kupffer cells to restrict liver metastases.

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Fig. 1: Deletion of ERMAP promotes liver metastases and represses the phagocytosis of tumor cells by Kupffer cells.

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This is a summary of: Li, J. et al. The ligation between ERMAP, galectin-9 and dectin-2 promotes Kupffer cell phagocytosis and antitumor immunity. Nat. Immunol. https://doi.org/10.1038/s41590-023-01634-7 (2023).

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ERMAP activates phagocytosis in Kupffer cells to restrict liver metastases. Nat Immunol 24, 1801–1802 (2023). https://doi.org/10.1038/s41590-023-01647-2

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