What is KIR in immunology?
Killer Ig-like receptors (KIRs) are surface inhibitory receptors specific for allelic forms of human leukocyte antigen (HLA) class I molecules, which are expressed by natural killer (NK) cells and a subset of T lymphocytes.
What is the function of Kir?
Allelic Diversity All but two KIR genes (KIR2DP1 and KIR3DL3) have multiple alleles, with KIR3DL2 and KIR3DL1 having the most variations (12 and 11, respectively). In total, as of 2012 there were 614 known KIR nucleotide sequences encoding 321 distinct KIR proteins.
What is KIR HLA?
HLA-C is a ligand of killer cell immunoglobulin receptors (KIRs) and is an essential regulator of natural killer cell activity, which is associated with endometriosis progression. Polymorphisms in HLA-C and KIR affect the activity of NK cells and susceptibility to several diseases.
What is KIR ligand?
KIR-ligands are HLA molecules that can be grouped into three major categories based on the amino acid sequence determining the KIR-binding epitope in HLA-C and HLA-B molecules. All expressed HLA-C alleles are of the C1 or C2 group (2) and most HLA-B alleles can be classified as either Bw4 or Bw6 (3).
How many KIR genes are there?
4 where KIR genes, each spanning ~10–16 kb, are tightly arranged in a head-to-tail orientation. This family consists of 13 genes (KIR2DL1, KIR2DL2/L3, KIR2DL4, KIR2DL5A, KIR2DL5B, KIR2DS1, KIR2DS2, KIR2DS3, KIR2DS4, KIR2DS5, KIR3DL1/S1, KIR3DL2, KIR3DL3) and 2 pseudogenes (KIR2DP1, and KIR3DP1) (82, 101, 102).
What is CD16 a marker for?
CD16 is often used as an additional marker to reliably identify different subsets of human immune cells. Several other CD molecules, such as CD11b and CD33, are traditionally used as markers for human myeloid-derived suppressor cells (MDSCs).
What is a kir test?
KIR-HLAC genotyping is a genetic test that allows to assess the risks of the embryo being rejected by the maternal immune system, and thus to direct medical interventions in order to achieve a successful pregnancy.
What is KIR typing?
The KIR Typing Kit allows the detection of all known human KIR genes and alleles at the genomic DNA and mRNA level. Accurate primer design for reliable results. The presence or absence of KIR genes is analyzed by PCR using sequence-specific primers (SSPs).
