RE: Nature Communications - Interferon Signalling15 Feb 2022 21:45
The data has become overwhelming...
'Interferon signaling is increased in COVID-19 patients and thought to contribute to host protection30,31,32,33,34. We explored whether type I interferon signaling among the B-cells and plasmablasts was associated with survival. Among these populations, naive B-cells and plasmablasts expressed ISGs in COVID-19 patients. We combined canonical ISGs from the B-naive and plasmablast DGE analyses to create a collective ISG z-score (IFIT3, ISG15, IFI6, MX1, IFI44L, ISG20, IFITM1, IFI27). Surprisingly, UMAP embedding plots and direct comparison of z-scores showed an increase in ISG expression in B-naive cells from the deceased cohort but an increase in this signature in plasmablasts from patients who survived (Fig. 3i). These findings highlight the significance of interferon signaling in distinct cell states and types with respect to survival in critical COVID-19 patients'