23May 2023
Reciprocal enhancement of SARS-CoV-2 and influenza virus replication in human pluripotent stem cell-derived lung organoids

Reciprocal enhancement of SARS-CoV-2 and influenza virus replication in human pluripotent stem cell-derived lung organoids

Patients with coinfection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and influenza A virus (FLUAV) experience severe respiratory failure and higher mortality rates. A new study developed a model using human pluripotent stem cell-induced alveolar type II organoids to investigate the pathobiology of SARS-CoV-2 and FLUAV coinfection. The organoids were susceptible to both viruses and exhibited severe lung damage. Infection with one virus increased susceptibility to the other and upregulated respective cell entry receptors. SARS-CoV-2 delta variants increased α-2-3-linked sialic acid, while FLUAV upregulated angiotensin-converting enzyme 2 (ACE2) and transmembrane serine protease 2 (TMPRSS2). Coinfection activated proinflammatory and immune-related signaling pathways, causing cellular damage. The study provides insights into the mechanisms of enhanced infectivity and severity in co-infected patients, which may contribute to the development of new therapies.

  • #family health

Like

Save

Share