Abstract：
:Natural killer (NK) cells have killer cell immunoglobulin-like receptors (KIR) that recognize and interact with HLA class I antigen. The KIRs are a multigene family and its members are often highly polymorphic. Evidence is emerging from disease-association studies that KIR receptors can play beneficial roles in viral infections, such as HIV, HCV, but may also predispose to certain autoimmune diseases. Knowledge regarding expression and function of KIR on human NK cells is lagging behind the rapid expansion of sequencing and genetic data already generated. This review focuses on recent discoveries that have been made, which help bridge this gap. We now appreciate the importance of phenotypic diversity of KIR receptor expression in NK cells and are starting to unravel some of the mysteries surrounding control of their complex expression patterns. In particular, the role that HLA ligand contributes to KIR receptor expression will be discussed. It is also becoming increasingly clear that genetic factors, such as promoters and epi-genetic mechanisms such as methylation, are hugely important in controlling NK cell receptor expression and function. The relevance of phenotypic diversity of NK cell receptors will be discussed in light of these recent findings.
journal_name
Int J Immunogenetjournal_title
International journal of immunogeneticsauthors
Gardiner CMdoi
10.1111/j.1744-313X.2007.00739.xsubject
Has Abstractpub_date
2008-02-01 00:00:00pages
1-8issue
1eissn
1744-3121issn
1744-313Xpii
EJI739journal_volume
35pub_type
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