CD47 transduces inhibitory signals through signal-regulatory protein α (SIRPα), a plasma membrane receptor expressed by macrophages. Many cancers upregulate CD47 to evade immunosurveillance. We have recently engineered SIRPα variants that potently antagonize CD47 for use as anticancer immunotherapeutics. These high-affinity SIRPα variants synergize with antineoplastic antibodies by lowering the threshold for macrophage-mediated destruction of malignant cells.
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| http://dx.doi.org/10.4161/onci.25773 | DOI Listing |
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