Alqassim et al find that RNA editing, known to be induced by IFN-1 in macrophages by the enzyme APOBEC3A, is required for the transcriptional, pro-inflammatory and metabolic responses that drive M1 macrophage polarization. APOBEC3A-mediated editing is also induced by IFN-1 exposure in tumor-associated macrophages isolated from ovarian cancer-related ascites fluid, pointing to a wide role for APOBEC3A in macrophages.
- Emad Y. Alqassim
- Shraddha Sharma
- Bora E. Baysal