Interferon therapy in alpha and Delta variants of SARS-CoV-2: The dichotomy between laboratory success and clinical realities

Cytokine. 2025 Feb:186:156829. doi: 10.1016/j.cyto.2024.156829. Epub 2024 Dec 17.

Abstract

The COVID-19 pandemic has caused significant morbidity and mortality worldwide. The emergence of the Alpha and Delta variants of SARS-CoV-2 has led to a renewed interest in using interferon therapy as a potential treatment option. Interferons are a group of signaling proteins produced by host cells in response to viral infections. They play a critical role in the innate immune response to viral infections by inducing an antiviral state in infected and neighboring cells. Interferon therapy has shown promise as a potential treatment option for COVID-19. In this review paper, we review the current knowledge regarding interferon therapy in the context of the Alpha and Delta variants of SARS-CoV-2 and discuss the challenges that must be overcome to translate laboratory findings into effective clinical treatments.

Keywords: Alpha variants; COVID-19; Delta variant; Interferon; Interferon therapy.

Publication types

  • Review

MeSH terms

  • Antiviral Agents* / therapeutic use
  • COVID-19 Drug Treatment*
  • COVID-19* / immunology
  • Humans
  • Immunity, Innate / drug effects
  • Interferon-alpha / therapeutic use
  • Interferons / therapeutic use
  • Pandemics
  • SARS-CoV-2* / immunology

Substances

  • Antiviral Agents
  • Interferons
  • Interferon-alpha

Supplementary concepts

  • SARS-CoV-2 variants