CD14+FCN1hi macrophages highly express S100A8/S100A9, which is initiated by FPR1 signaling in severe COVID-19. An FPR1 inhibitor prevents the transcription, hetero-dimerization, and secretion of S100A8/A9 through STAT3/PLC-γ/ERK1/2 pathways.
- Zhongyi Wang
- Yi Wang
- Jingjiao Zhou