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Updated: Aug 19, 2026
Artificial Antigen Presenting Cell (aAPC) Mediated Activation and Expansion of Natural Killer T Cells
Published on: December 29, 2012
Development and selection of NKT cells
1Ludwig Institute for Cancer Research, Lausanne Branch, University of Lausanne, CH-1066 Epalinges, Switzerland. hughrobson.macdonald@isrec.unil.ch
Abstract:
NKT cells utilize a restricted alphabeta TCR repertoire that recognizes glycolipids in association with CD1d. The recent development of fluorescent CD1d tetramers loaded with the synthetic glycolipid alpha-galactosyl-ceramide has led to a clearer definition of NKT-cell subsets as well as important insights into their developmental origin. As many as four subsets may exist, differing in NK1.1 expression, TCR repertoire and dependence on CD1d and various glycolipids for development. Two different lineage-commitment models have been proposed, with most evidence favoring a byproduct of conventional-T-cell development.
Insights
Natural killer T (NKT) cells, which recognize glycolipids via CD1d, have distinct subsets. Research suggests they may develop as a byproduct of conventional T-cell development.
Area of Science:
- Immunology
- Cellular Biology
Background:
- Natural Killer T (NKT) cells possess a limited alphabeta T-cell receptor (TCR) repertoire.
- NKT cells recognize glycolipids presented by CD1d molecules.
Purpose of the Study:
- To define NKT-cell subsets using novel tools.
- To gain insights into the developmental origins of NKT cells.
Main Methods:
- Utilized fluorescent CD1d tetramers loaded with alpha-galactosyl-ceramide.
- Analyzed NKT-cell subsets based on NK1.1 expression and TCR repertoire.
Main Results:
- Identified potentially four distinct NKT-cell subsets.
- Demonstrated varying dependence on CD1d and glycolipids for NKT-cell development.
- Found evidence supporting NKT cells developing as a byproduct of conventional T-cell development.
Conclusions:
- Fluorescent CD1d tetramers are valuable tools for NKT-cell research.
- NKT-cell development may be linked to conventional T-cell pathways.
