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Could Antigen Presenting Cells Represent a Protective Element during SARS-CoV-2 Infection in Children?

Rita Lauro1, Natasha Irrera1, Ali H Eid2,3

  • 1Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina, Italy.

Pathogens (Basel, Switzerland)
|April 30, 2021
PubMed

Insights

Antigen Presenting Cells (APCs) are crucial immune responders. This review examines how APCs combat SARS-CoV-2, exploring potential differences in children versus adults that influence COVID-19 outcomes.

Area of Science:

  • Immunology
  • Virology
  • Cell Biology

Background:

  • Antigen Presenting Cells (APCs) are vital for initiating immune responses against pathogens.
  • COVID-19, caused by SARS-CoV-2, shows differential severity in adults and children, suggesting immune system variations.
  • Understanding APC function in different age groups is critical for explaining varied COVID-19 pathogenesis.

Purpose of the Study:

  • To dissect the role of Antigen Presenting Cells (APCs) in combating SARS-CoV-2 infection.
  • To explore potential molecular mechanisms underlying differences in APC function between children and adults.
  • To elucidate how these differences may contribute to the observed disparities in COVID-19 severity and outcomes.

Main Methods:

  • This review synthesizes existing literature on APC function and SARS-CoV-2 immunology.
  • Comparative analysis of APC roles in pediatric versus adult immune responses to viral infections.
  • Examination of molecular pathways potentially governing differential APC activity.

Main Results:

  • APCs are early responders to SARS-CoV-2, processing and presenting viral antigens.
  • Evidence suggests distinct APC characteristics and functions in children compared to adults.
  • These differences may underlie the lower susceptibility and severity of COVID-19 in pediatric populations.

Conclusions:

  • APC function is central to the immune response against SARS-CoV-2.
  • Molecular differences in juvenile APCs may confer protection against severe COVID-19.
  • Further research into age-specific APC mechanisms is warranted to understand COVID-19 pathogenesis and inform therapeutic strategies.

Keywords:
Antigen Presenting Cells (APC)COVID-19IFN-signalingSARS-CoV-2cytokine stormjuvenile immunity

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