Abstract:
:Killer cells immunoglobulin-like receptors (KIRs) are a family of inhibitory and activating receptors expressed mainly by natural killer (NK) cells and few subsets of T lymphocytes. KIRs regulate NK cells' activity through interactions with specific HLA class I molecules and other yet unknown ligands presented on target cells. At present, 17 KIR genes and pseudogenes have been identified. As the number of KIR genes in different haplotypes varies, a wide range of genotypes in different ethnic populations may be observed. In our study, 125 healthy non-related Czech individuals were KIR typed both by sequence-specific primers and by sequence-specific oligonucleotide KIR genotyping methods. Thirty-eight different genotypes were observed in the Czech population and all 16 KIR genes known to date were found. Framework genes KIR 3DL3, KIR 2DL4, KIR 3DL2 and the pseudogene KIR 3DP1 were present in all individuals. The most frequent non-framework KIR genes detected in the Czech population were: KIR 2DL1 (95%), KIR 3DL1 (94%), KIR 2DS4 (92%) and the pseudogene 2DP1 (94%). Human leucocyte antigen (HLA)-C typing demonstrated prevalence of the C1/C2 heterozygosity (43%) and C1 homozygosity (41%) over the C2 heterozygosity. One hundred and twenty individuals from our panel carried at least one inhibitory KIR for the corresponding HLA-C group found in the genotype. Gene frequencies and found genotypes demonstrated similarity of the Czech population's KIR repertoire with the KIR repertoires of other Caucasian populations studied before.
journal_name
Int J Immunogenetjournal_title
International journal of immunogeneticsauthors
Pavlova Y,Kolesar L,Striz I,Jabor A,Slavcev Adoi
10.1111/j.1744-313X.2007.00737.xsubject
Has Abstractpub_date
2008-02-01 00:00:00pages
57-61issue
1eissn
1744-3121issn
1744-313Xpii
EJI737journal_volume
35pub_type
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