kir2ds3 is associated with protection against acute myeloid leukemia
نویسندگان
چکیده
background: interaction between killer cell immunoglobulin-like receptors (kir) and human leukocyte antigen (hla) class i molecules is important for regulation of natural killer (nk) cell function. objective: the aim of this study was to investigate the impact of compound kir-hla genotype on susceptibility to acute leukemia. methods: cohorts of iranian patients with acute myeloid leukemia (aml; n=40) and acute lymphoid leukemia (all; n=38) were genotyped for seventeen kir genes and their three major hla class i ligand groups (c1, c2, bw4) by a combined polymerase chain reaction–sequence-specific primers (pcr-ssp) assay. the results were compared with those of 200 healthy control individuals. results: we found a significantly decreased frequency of kir2ds3 in aml patients compared to control group (12.5% vs. 38%, odds ratio=0.23, p=0.0018). also, the kir3ds1 was less common in aml group than controls (27.5% vs. 44.5%, p=0.0465, not significant after correction). other analyses including kir genotypes, distribution and balance of inhibitory and activating kir+hla combinations, and co-inheritance of activating kir genes with inhibitory kir+hla pairs were not significantly different between leukemia patients and the control group. however, in aml patients a trend toward less activating and more inhibitory kir-hla state was observed. interestingly, this situation was not found in all patients and inhibition enhancement through increase of hla ligands and inhibi-tory combinations was the main feature in this group. conclusion: our findings may suggest a mechanism for escape of leukemic cells from nk cell immunity.
منابع مشابه
KIR2DS3 is Associated with Protection against Acute Myeloid Leukemia
Background: Interaction between killer cell immunoglobulin-like receptors (KIR) and human leukocyte antigen (HLA) class I molecules is important for regulation of natural killer (NK) cell function. Objective: The aim of this study was to investigate the impact of compound KIR-HLA genotype on susceptibility to acute leukemia. Methods: Cohorts of Iranian patients with acute myeloid leukemia (AML;...
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عنوان ژورنال:
iranian journal of immunologyجلد ۷، شماره ۱، صفحات ۸-۱۷
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