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COVID-19: Unanswered questions on immune response and pathogenesis
Enrico Maggi1, Giorgio Walter Canonica2, Lorenzo Moretta1
1Department of Immunology, Bambino Gesù Children Hospital, IRCCS, Rome, Italy.
Insights
Understanding severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pathogenesis and host immune interactions is crucial for developing effective COVID-19 therapeutics. This research highlights key challenges in controlling virus spread and mitigating severe disease.
Area of Science:
- Virology
- Immunology
- Pathogenesis
Background:
- The COVID-19 pandemic, caused by SARS-CoV-2, necessitates rapid scientific understanding.
- Effective control of virus entry, replication, and spread requires knowledge of host-pathogen interactions.
- Previous coronavirus research informs current strategies against SARS-CoV-2.
Purpose of the Study:
- To identify critical unsolved problems in SARS-CoV-2 pathogenesis.
- To elucidate host immune responses to SARS-CoV-2 infection.
- To explore factors influencing COVID-19 disease severity.
Main Methods:
- Review of recent research on SARS-CoV-2.
- Analysis of findings from previous coronavirus studies.
- Focus on pathogenetic and immunological aspects.
Main Results:
- Unsolved problems in SARS-CoV-2 pathogenesis are highlighted.
- Key aspects of host immunity are discussed.
- Immune responses in asymptomatic individuals are considered.
Conclusions:
- A deeper understanding of SARS-CoV-2 interactions is vital for therapeutic development.
- Immune evasion strategies of SARS-CoV-2 in severe cases are examined.
- Age and sex-related differences in disease severity are noted.
Abstract:
The novel coronavirus disease 2019 has rapidly increased in pandemic scale since it first appeared in Wuhan, China, in December 2019. In these troubled days the scientific community is asking for rapid replies to prevent and combat the emergency. It is generally accepted that only achieving a better understanding of the interactions between the virus and the host immune response and of the pathogenesis of infection is crucial to identify valid therapeutic tools to control virus entry, replication, and spread as well as to impair its lethal effects. On the basis of recent research progress of severe acute respiratory syndrome coronavirus 2 and the results on previous coronaviruses, in this contribution we underscore some of the main unsolved problems, mostly focusing on pathogenetic aspects and host immunity to the virus. On this basis, we also touch important aspects regarding the immune response in asymptomatic subjects, the immune evasion of severe acute respiratory syndrome coronavirus 2 in severe patients, and differences in disease severity by age and sex.
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