Control of Innate Immune Activation by Severe Acute Respiratory Syndrome Coronavirus 2 and Other Coronaviruses.
Level 5 - mechanism / opinion, no new human data
Narrative review detailing molecular mechanisms without original human data
PubMed 34161170 · doi:10.1089/jir.2021.0060
What was done
This is a narrative review synthesizing literature on innate immune signaling pathways activated during infection with pathogenic human coronaviruses (SARS-CoV-2, SARS-CoV-1, and MERS-CoV). The authors describe the viral strategies used to antagonize interferon induction and downstream effector pathways.
What was found
The abstract reports qualitative mechanistic summaries and provides no numeric data or quantitative effect sizes. Pathogenic human coronavirus infections are characterized by a delayed and blunted interferon response paired with excessive production of proinflammatory cytokines, driven by specific viral immune-evasion mechanisms that promote viral replication and pathogenesis.
Why it matters
Synthesizing the molecular mechanisms through which coronaviruses disable early interferon signaling while permitting hyperinflammation helps map potential targets for antiviral and immunomodulatory interventions.
Limits
As a narrative review, it reports no new empirical data, clinical trial outcomes, or systematic literature search criteria. Evidence relies on underlying preclinical and mechanistic studies rather than controlled clinical evaluation.
Cited by
- supports SARS-CoV-1, SARS-CoV-2, and MERS suppress the innate immune system early in the course of infection.