Human Histocompatibility Leukocyte Antigen (HLA)-G Molecules Inhibit NKAT3 Expressing Natural Killer Cells

Human Histocompatibility Leukocyte Antigen (HLA)-G Molecules Inhibit NKAT3 Expressing Natural Killer Cells
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人类组织相容性白细胞抗原 (HLA)-G 分子抑制 NKAT3 表达的自然杀伤细胞

DOI:
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发表时间:
1997
影响因子:
15.3
通讯作者:
H. Rammensee
H. Rammensee
中科院分区:
医学1区
文献类型:
--
作者:
C. Münz;N. Holmes;A. King;Y. W. Loke;M. Colonna;H. Schild;H. Rammensee

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经典的人类主要组织相容性复合体(MHC)I类分子,人类组织相容性白细胞抗原(HLA)-A、-B和-C的关键免疫功能是将肽呈递给T细胞。第二种功能是抑制自然杀伤(NK)细胞,通过I类分子与NK受体的结合介导。相比之下,非经典的人类MHC I类分子HLA-E、-F和-G的功能仍然是一个谜。HLA-G在胎盘滋养层细胞中的特异性表达提示该分子在母婴间的免疫相互作用中具有重要作用。胎儿,半同种异体移植的基因型,逃避母亲同种异体识别的下调HLA-A和HLA-B分子在这个接口。已经表明,这种下调的母体NK识别通过HLA-G的表达来平衡,从而防止对胎盘的损伤。在这里,我们描述了部分抑制NK细胞溶解的MHC I类阴性细胞系LCL 721.221后,HLA-G转染。我们提出了三种NK细胞系,它们通过NKAT 3受体与HLA-G和HLA-Bw 4分子的相互作用而被抑制。抑制作用可被抗NKAT 3抗体5.133阻断。总之,NK抑制HLA-G通过NKAT 3可能有助于胎儿半同种异体移植物在母亲怀孕期间的生存。
The crucial immunological function of the classical human major histocompatibility complex (MHC) class I molecules, human histocompatibility leukocyte antigen (HLA)-A, -B, and -C, is the presentation of peptides to T cells. A secondary function is the inhibition of natural killer (NK) cells, mediated by binding of class I molecules to NK receptors. In contrast, the function of the nonclassical human MHC class I molecules, HLA-E, -F, and -G, is still a mystery. The specific expression of HLA-G in placental trophoblast suggests an important role for this molecule in the immunological interaction between mother and child. The fetus, semiallograft by its genotype, escapes maternal allorecognition by downregulation of HLA-A and HLA-B molecules at this interface. It has been suggested that the maternal NK recognition of this downregulation is balanced by the expression of HLA-G, thus preventing damage to the placenta. Here, we describe the partial inhibition of NK lysis of the MHC class I negative cell line LCL721.221 upon HLA-G transfection. We present three NK lines that are inhibited via the interaction of their NKAT3 receptor with HLA-G and with HLA-Bw4 molecules. Inhibition can be blocked by the anti-NKAT3 antibody 5.133. In conclusion, NK inhibition by HLA-G via NKAT3 may contribute to the survival of the fetal semiallograft in the mother during pregnancy.
HLA-A、B“阴性”突变细胞系 C1R 表达一种新的 HLA-B35 等位基因,该等位基因在翻译起始密码子中也有一个点突变。
DOI: --
发表时间: 1992
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
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Zemmour,J;Little,AM;Schendel,DJ;Parham,P
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DOI: 10.1126/science.2326636
发表时间: 1990-04-13
期刊: SCIENCE
影响因子: 56.9
作者:
KOVATS, S;MAIN, EK;DEMARS, R
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DOI: --
发表时间: 1994
期刊: Immunology
影响因子: 6.4
作者:
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DOI: --
发表时间: 1989
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
作者:
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通讯作者: DeMars,R