Fig. 6

Potential signalling pathways of Dicoumarol (DCM) against Omicron in cultured airway epithelial cells (AECs). Among AECs treated with DCM at concentrations of 0 μM, 100 μM and 200 μM, the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis was performed to identify the upregulated pathways (a–c) and downregulated pathways (e–g) between groups, and the heatmap showed the representative genes expression related to COVID-19 signalling pathway (d)