Natural Killer Cells Detect a Tumor-Produced Growth Factor: A Vestige of Antiviral Resistance?

Publication date: Available online 22 February 2018
Source:Trends in Immunology
Author(s): Giorgio Trinchieri
In addition to exogenous ligands derived from pathogens, natural killer (NK) and other innate cells can recognize endogenous ligands that often act as markers of stress or damage. A recent study reports that one of these receptors, human NKp44, recognizes PDGF-DD, providing a rare example of the recognition of a soluble growth factor as a stress signal. The recognition of PDGF-DD induces the secretion of cytokines with antitumor activity.



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