Natural killer cells play an important role in virus infection control: Antiviral mechanism, subset expansion and clinical application.
Clin Immunol
; 227: 108727, 2021 06.
Article
in English
| MEDLINE | ID: covidwho-1193258
ABSTRACT
With the global spread of coronavirus disease 2019 (COVID-19), the important role of natural killer (NK) cells in the control of various viral infections attracted more interest, via non-specific activation, such as antibody-dependent cell-mediated cytotoxicity (ADCC) and activating receptors, as well as specific activation, such as memory-like NK generation. In response to different viral infections, NK cells fight viruses in different ways, and different NK subsets proliferate. For instance, cytomegalovirus (CMV) induces NKG2C + CD57 + KIR+ NK cells to expand 3-6 months after hematopoietic stem cell transplantation (HSCT), but human immunodeficiency virus (HIV) induces KIR3DS1+/KIR3DL1 NK cells to expand in the acute phase of infection. However, the similarities and differences among these processes and their molecular mechanisms have not been fully discussed. In this article, we provide a summary and comparison of antiviral mechanisms, unique subset expansion and time periods in peripheral blood and tissues under different conditions of CMV, HIV, Epstein-Barr virus (EBV), COVID-19 and hepatitis B virus (HBV) infections. Accordingly, we also discuss current clinical NK-associated antiviral applications, including cell therapy and NK-related biological agents, and we state the progress and future prospects of NK cell antiviral treatment.
Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Killer Cells, Natural
/
Host Microbial Interactions
/
COVID-19
Type of study:
Prognostic study
Limits:
Humans
Language:
English
Journal:
Clin Immunol
Journal subject:
Allergy and Immunology
Year:
2021
Document Type:
Article
Affiliation country:
J.clim.2021.108727
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