SARS-CoV-2 pseudovirus dysregulates hematopoiesis and induces inflammaging of hematopoietic stem and progenitor cells.

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection primarily affects the respiratory system but may induce hematological alterations such as anemia, lymphopenia and thrombocytopenia. Previous studies have reported that SARS-CoV-2 efficiently infects hematopoietic stem and progenitor cells (HSPCs); however, the subsequent effects on hematopoiesis and immune reconstitution have not yet been described. Here we evaluated the pathological effects of infection of umbilical-cord-blood-derived HSPCs with the SARS-CoV-2 Omicron variant pseudovirus (PsV).