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The term "NK T cells" was first used in mice to define a subset of T cells that expressed the natural killer (NK) cell-associated marker NK1.1 (CD161). It is now generally accepted that the term "NKT cells" refers to CD1d-restricted T cells , present in mice and humans, some of which coexpress a heavily biased, semi-invariant T-cell receptor ...
In both humans and mice, genes encoding the NKG2 family are clustered – in human genome on chromosome 12, in mouse on chromosome 6. [2] They are generally expressed on NK cells and a subset of CD8 + T cells, although the expression of NKG2D was also confirmed on γδ T cells, NKT cells, and even on some subsets of CD4 + T cells or myeloid cells.
CD1d tetramers are protein constructs composed of four CD1d molecules joined together and usually fluorescently labelled, used to identify NKT cells or other CD1d-reactive cells. In particular, type I NKT cells and some type II NKT cells are stained by them. A differentiation of these two types can be obtained in human by using an antibody ...
NKG2D is an activating receptor (transmembrane protein) belonging to the NKG2 family of C-type lectin-like receptors. [5] NKG2D is encoded by KLRK1 (killer cell lectin like receptor K1) gene which is located in the NK-gene complex (NKC) situated on chromosome 6 in mice [6] and chromosome 12 in humans. [7]
Cytokine-induced killer cells (CIK) cells are a group of immune effector cells featuring a mixed T- and natural killer (NK) cell-like phenotype.They are generated by ex vivo incubation of human peripheral blood mononuclear cells (PBMC) or cord blood mononuclear cells with interferon-gamma (), anti-CD3 antibody, recombinant human interleukin (IL)-1 and recombinant human interleukin (IL)-2.
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KLRG1 is a lymphocyte co-inhibitory, or immune checkpoint, receptor expressed predominantly on late-differentiated effector and effector memory CD8+ T and NK cells. Its ligands are E-cadherin and N-cadherin with similar affinities, [10] respective markers of epithelial and mesenchymal cells. [11]
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