Endothelial Cells in Emerging Viral Infections

Area of Science:

• Virology
• Immunology
• Vascular Biology

Background:

• Severe COVID-19 cases exhibit vascular dysfunction, with SARS-CoV-2 replication observed in endothelial cells.
• Common COVID-19 comorbidities like obesity, hypertension, and diabetes are linked to endothelial dysfunction, exacerbating disease severity.
• Many emerging viruses, such as henipaviruses and avian influenza, target endothelial cells, similar to SARS-CoV-2.

Purpose of the Study:

• To review the critical role of vascular endothelial cells in emerging viral infections.
• To explore endotheliotropism as a potential virulence factor in viral pathogenesis.
• To elucidate mechanisms by which viruses infect endothelial cells and modulate vascular and immune responses.

Main Methods:

• Literature review of studies on viral interactions with endothelial cells.
• Analysis of viral entry mechanisms and endothelial cell responses to infection.
• Discussion of how viral components and immune responses dysregulate endothelial cell function.

Main Results:

• Endothelial cells are key regulators of vascular and immune responses during infection.
• Viral endotheliotropism facilitates infection dissemination and tissue access.
• Viruses can dysregulate endothelial function directly or indirectly through inflammatory responses.

Conclusions:

• Endothelial cell dysfunction is a common feature in severe viral diseases, including COVID-19.
• Understanding virus-endothelial interactions is vital for developing therapeutic strategies against emerging viral infections.
• Further research is needed to fully comprehend the complex mechanisms of viral modulation of endothelial cells.