The genetic and evolutionary balances in human NK cell receptor diversity.

The genetic and evolutionary balances in human NK cell receptor diversity.
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DOI:
10.1016/j.smim.2008.10.002
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发表时间:
2008-12
影响因子:
7.8
通讯作者:
Parham P
Parham P
中科院分区:
医学2区
文献类型:
--
作者:
Parham P

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在灵长类动物和牛中,两种古老的杀伤细胞免疫球蛋白样受体(KIR)谱系独立进化成为多种NK细胞受体。在小鼠中,KIR基因被排除在X染色体之外,这可能是病原体介导的IgA-Fc受体选择的结果。在人类中,KIR独特地形成了两个无处不在的单倍型群(A和B),被认为在免疫防御和繁殖中起着互补和必要的作用。KIR3DL1/S1多态性的基础是通过长期平衡选择维持的三个古老谱系,并且存在于所有人群中。保守的和可变的NK细胞受体在定义的缺失自我反应范围内产生结构多样化的NK细胞受体。
In primates and cattle two ancient killer-cell immunoglobulin-like receptor (KIR) lineages independently evolved to become diverse NK cell receptors. In mice, KIR genes were sidelined to the X chromosome, a possible consequence of pathogen-mediated selection on the receptor for IgA-Fc. In humans, KIR uniquely form two omnipresent haplotype groups (A and B), postulated to play complementary and necessary roles in immune defense and reproduction. The basis of KIR3DL1/S1 polymorphism is three ancient lineages maintained by long-term balancing selection and present in all human populations. Conserved and variable NK cell receptors produce structurally diverse NK cell receptor repertoires within a defined range of missing-self response.
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