首页> 外文期刊>Clinical immunology: The official journal of the Clinical Immunology Society >Inhibitory KIR and specific HLA-C gene combinations confer susceptibility to or protection against chronic hepatitis B.
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Inhibitory KIR and specific HLA-C gene combinations confer susceptibility to or protection against chronic hepatitis B.

机译:抑制性KIR和特定的HLA-C基因组合赋予慢性乙型肝炎易感性或预防性。

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摘要

Antiviral activity of natural killer (NK) cells is regulated partially through inhibitory and activating killer cell immunoglobulin-like receptors (KIR) interacting with human leukocyte antigen C (HLA-C) ligands. The highly polymorphic nature of HLA-C and KIR genes endows individuals with diverse HLA-C/KIR combinations, which may confer susceptibility to or protection against a certain challenge. We analyzed the genes encoding KIR receptors and HLA-C ligands and HLA-C/KIR combinations in patients with chronic hepatitis B and healthy subjects. We found that inhibitory receptor KIR2DL1 in combination with HLA-C2 ligand confers susceptibility to chronic hepatitis B (CHB), whereas inhibitory receptor KIR2DL3 or KIR2DL3 homozygote in the presence of HLA-C1C1 genotype shows protection against CHB. Our data reveal that inhibitory NK cell interactions are important in determining antiviral immunity and that distinct affinity inhibitory responses will exert different impact on the development of CHB.
机译:通过与人白细胞抗原C(HLA-C)配体相互作用的抑制性和活化性杀伤细胞免疫球蛋白样受体(KIR)来部分调节自然杀伤(NK)细胞的抗病毒活性。 HLA-C和KIR基因的高度多态性使个体具有多种HLA-C / KIR组合,这可能使他们对某种挑战易感或得到保护。我们分析了慢性乙型肝炎和健康受试者中编码KIR受体和HLA-C配体以及HLA-C / KIR组合的基因。我们发现抑制受体KIR2DL1与HLA-C2配体组合可赋予慢性乙型肝炎(CHB)敏感性,而抑制受体KIR2DL3或KIR2DL3纯合子在存在HLA-C1C1基因型的情况下显示出对CHB的保护作用。我们的数据表明,抑制性NK细胞相互作用在确定抗病毒免疫性方面很重要,而且不同的亲和性抑制反应将对CHB的发展产生不同的影响。

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