Journal
IMMUNITY
Volume 52, Issue 5, Pages 742-752Publisher
CELL PRESS
DOI: 10.1016/j.immuni.2020.04.011
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Funding
- ERC AdG SENSIT
- Leiden University Medical Center fellowship
- KWF [12629]
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The cytotoxic activity of myeloid cells is regulated by a balance of signals that are transmitted through inhibitory and activating receptors. The Cluster of Differentiation 47 (CD47) protein, expressed on both healthy and cancer cells, plays a pivotal role in this balance by delivering a don't eat me signal'' upon binding to the Signal-regulatory protein alpha (SIRP alpha) receptor on myeloid cells. Here, we review the current understanding of the role of the CD47-SIRP alpha axis in physiological tissue homeostasis and as a promising therapeutic target in, among others, oncology, fibrotic diseases, atherosclerosis, and stem cell therapies. We discuss gaps in understanding and highlight where additional insight will be beneficial to allow optimal exploitation of this myeloid cell checkpoint as a target in human disease.
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