Autoimmune Processes Involved in Organ System Failure Following Infection with SARS-CoV-2

Area of Science:

• Virology and Immunology
• Pathophysiology of Infectious Diseases
• Molecular Biology

Background:

• The COVID-19 pandemic caused by SARS-CoV-2 presents with high transmissibility and mortality.
• The disease progresses through initial exposure, immune response, and potentially severe inflammatory complications affecting multiple organs.
• Understanding the virus-host interaction is crucial for developing effective treatments.

Purpose of the Study:

• To review the molecular structure of SARS-CoV-2 and its interaction with the ACE2 receptor.
• To discuss the role of the Major Histocompatibility Complex (MHC) in viral recognition.
• To examine host factors influencing immune response and the development of cytokine storms leading to organ failure.

Main Methods:

• Review of molecular and structural organization of SARS-CoV-2.
• Analysis of the interaction between the SARS-CoV-2 spike protein and the ACE2 receptor.
• Discussion of host factors and immune response mechanisms.

Main Results:

• The spike protein-ACE2 interaction is a key target for therapeutic development.
• Host factors significantly influence the immune response and disease progression.
• Inflammatory dysregulation and cytokine storms can lead to multi-organ failure.

Conclusions:

• Insights from other coronavirus infections, like murine hepatitis virus-JHM, offer parallels to COVID-19's inflammatory phase.
• The host-virus interaction plays a critical role in the development of severe, autoimmune-like manifestations in COVID-19.
• Further research into these interactions can inform strategies for managing severe COVID-19 and related autoimmune disorders.