Related Experiment Video
Updated: Jun 25, 2025

Dextran Enhances the Lentiviral Transduction Efficiency of Murine and Human Primary NK Cells
Published on: January 15, 2018
NK-cell receptor modulation in viral infections
Marzena Lenart1, Magdalena Rutkowska-Zapała1, Maciej Siedlar1
1Department of Clinical Immunology, Institute of Pediatrics, Jagiellonian University Medical College, Wielicka, Krakow, Poland.
Natural killer (NK) cells control viral infections via germ-line encoded receptors. Understanding NK cell receptor modulation in infections like SARS-CoV-2 is key for new antiviral therapies.
Area of Science:
- Immunology
- Virology
Background:
- Natural killer (NK) cells are crucial for innate immunity against viral infections.
- NK cell function relies on a balance between activating and inhibitory surface receptors.
- Receptor expression changes during viral infections, influencing NK cell responses.
Purpose of the Study:
- To review NK cell receptor roles in viral infection control.
- To summarize NK cell receptor expression alterations in acute and chronic infections.
- To discuss SARS-CoV-2-mediated NK cell receptor modulation and therapeutic potential.
Main Methods:
- Literature review of NK cell receptor biology and viral infections.
- Analysis of NK cell receptor expression changes in various viral infections.
- Comparison of SARS-CoV-2 effects with other human viral pathogens.
Main Results:
- NK cell receptor expression is modulated during viral infections, affecting cell activation, memory differentiation, or exhaustion.
- SARS-CoV-2 specifically alters NK cell receptor expression.
- Therapeutic targeting of NK cell receptors shows promise for antiviral strategies.
Conclusions:
- NK cell receptors are critical in antiviral defense and are modulated by viruses.
- Further research into NK cell receptor biology is needed for effective antiviral therapies.
- Targeting NK cell receptors offers a promising avenue for novel antiviral treatments.
Related Concept Videos
Immune Response Against Viral Pathogens
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
Cytotoxic T Cells-mediated Immune Response
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
Receptor Downregulation in MVBs
The EGFR can initiate signaling pathways that lead to cell proliferation, migration, and differentiation. Overexpression of EGFR stimulates cells to proliferate. Excessive EGFR...
Cells of the Innate Immune Response
Phagocytes
Phagocytes police the peripheral tissues by removing cellular debris and responding to the invasion of foreign substances or pathogens. Many phagocytes attack and remove microorganisms even before lymphocytes detect them. The human body has two general...
T Cell Activation and Clonal Selection
Naive T cells that have not yet encountered an antigen express two primary CD...
Immune Surveillance by NK Cells and Phagocytes
Natural Killer Cells: The Fast Responders
NK cells are large granular lymphocytes found in the blood and lymphatic system. These...

