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Critical Reviews™ in Immunology
Импакт фактор: 1.404 5-летний Импакт фактор: 3.347 SJR: 0.706 SNIP: 0.55 CiteScore™: 2.19

ISSN Печать: 1040-8401
ISSN Онлайн: 2162-6472

Выпуски:
Том 40, 2020 Том 39, 2019 Том 38, 2018 Том 37, 2017 Том 36, 2016 Том 35, 2015 Том 34, 2014 Том 33, 2013 Том 32, 2012 Том 31, 2011 Том 30, 2010 Том 29, 2009 Том 28, 2008 Том 27, 2007 Том 26, 2006 Том 25, 2005 Том 24, 2004 Том 23, 2003 Том 22, 2002 Том 21, 2001 Том 20, 2000 Том 19, 1999 Том 18, 1998 Том 17, 1997 Том 16, 1996 Том 15, 1995 Том 14, 1994

Critical Reviews™ in Immunology

DOI: 10.1615/CritRevImmunol.2020034943
pages 173-184

MAIT Cells in COVID-19: Heroes, Villains, or Both?

S. M. Mansour Haeryfar
Department of Microbiology and Immunology, Western University, London, Ontario, Canada; Division of Clinical Immunology and Allergy, Department of Medicine, Western University, London, Ontario, Canada; Division of General Surgery, Department of Surgery, Western University, London, Ontario, Canada; Centre for Human Immunology, Western University, London, Ontario, Canada; Lawson Health Research Institute, London, Ontario, Canada

Краткое описание

Mucosa-associated invariant T cells (MAIT cells) are unconventional, innate-like T lymphocytes with remarkable effector and immunoregulatory functions. They are abundant in the human peripheral blood and also enriched in mucosal layers and in the lungs, SARS-CoV-2's main ports of entry. Once activated, MAIT cells produce inflammatory cytokines and cytolytic effector molecules quickly and copiously. MAIT cells are best known for their antibacterial and antifungal properties. However, they are also activated during viral infections, typically in a cytokine-dependent manner, which may promote antiviral immunity. On the other hand, it is plausible to assume active roles for MAIT cells in infection-provoked cytokine storms and tissue damage. SARS-CoV-2 infection may be asymptomatic, mild, severe, or even fatal, depending on sex, age, the presence of preexisting morbidities, and the individual's immunological competence, or lack thereof, among other factors. Based on the available literature, I propose that MAIT cells regulate the host response to SARS-CoV-2 and constitute attractive targets in the prevention or clinical management of coronavirus disease 19 (COVID-19) and some of its complications. Unlike mainstream T cells, MAIT cells are restricted by a monomorphic antigen-presenting molecule called MHC-related protein 1 (MR1). Therefore, MR1 ligands should modify MAIT cell functions relatively uniformly in genetically diverse subjects and may be tested as immunotherapeutic agents or vaccine adjuvants in future studies.

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