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Natural killer cells, viruses and cancer
1Department of Microbiology and Immunology and the Cancer Research Institute, University of California, San Francisco, 94143-0414, USA.
Nature Reviews. Immunology
|March 22, 2002
Summary
Natural killer (NK) cells, key innate immune cells, regulate infections and tumors. Emerging evidence highlights their crucial role in in vivo immune defense against pathogens and cancer.
Area of Science:
- Immunology
- Cell Biology
- Infectious Disease
Background:
- Natural killer (NK) cells are crucial components of the innate immune system.
- Their function is dictated by a balance of activating and inhibitory receptor signals.
- These receptors interact with ligands on target cells, including tumor cells and virus-infected cells.
Purpose of the Study:
- To review the current evidence for the in vivo functions of natural killer cells.
- To elucidate the regulatory mechanisms governing natural killer cell activity.
- To highlight the significance of natural killer cells in immune defense.
Main Methods:
- Review of existing scientific literature and research findings.
- Analysis of data concerning natural killer cell activation and inhibition.
- Synthesis of evidence regarding the in vivo roles of natural killer cells.
Main Results:
- Natural killer cells play a significant role in controlling microbial infections.
- Natural killer cells are important in the immune surveillance and elimination of tumors.
- The balance between activating and inhibitory signals is critical for proper natural killer cell function.
Conclusions:
- Natural killer cells are vital for effective in vivo immune defense.
- Understanding natural killer cell regulation is key to harnessing their therapeutic potential.
- Further research into natural killer cell biology will advance treatments for infections and cancer.