Library Subscription: Guest
Begell Digital Portal Begell Digital Library eBooks Journals References & Proceedings Research Collections
Critical Reviews™ in Oncogenesis
SJR: 0.946 SNIP: 0.503 CiteScore™: 2

ISSN Print: 0893-9675
ISSN Online: 2162-6448

Critical Reviews™ in Oncogenesis

DOI: 10.1615/CritRevOncog.2014010827
pages 67-75

Dendritic Cell Editing by Natural Killer Cells

Guido Ferlazzo
Laboratory of Immunology and Biotherapy, Department of Human Pathology, University of Messina, Messina, Italy; Cell Therapy Program, Azienda Ospedaliera Universitaria Policlinico "Gaetano Martino", Messina, Italy
Lorenzo Moretta
Istituto G.Gaslini, Genoa, Italy

ABSTRACT

Activated, mature, dendritic cells (DCs) are the main antigen-presenting cells for initiating adaptive immune responses, whereas immature DCs have been implicated in tolerance and induction of regulatory T cells. It is now well established that NK cells are able to discriminate between mature and immature DCs by killing the latter because of their low amount of surface human leukocyte antigen (HLA) class I molecules. Thus, NK cells are thought to play an important regulatory role by selectively editing DCs during the course of immune responses. NK-mediated killing of immature (but not mature) DCs results in selection of immunogenic DCs during the initiation of anti-cancer immune responses. In addition to the removal of inappropriate DCs, NK cells can also shape adaptive immune responses by promoting DC maturation and influencing the polarization of primary T-cell responses. DC-NK cell interactions should be carefully considered in DC-based cancer vaccine strategies. Optimal NK cell activation should be sought to enhance the magnitude and the quality of both innate and adaptive immune responses against tumors.