The Expression and Function of the NKRP1 Receptor Family in C57BL/6 Mice1

The Expression and Function of the NKRP1 Receptor Family in C57BL/6 Mice1
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NKRP1受体家族在C57BL/6小鼠中的表达和功能

DOI:
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发表时间:
2009
影响因子:
4.4
通讯作者:
C. Brooks
C. Brooks
中科院分区:
医学2区
文献类型:
--
作者:
J. Aust;F. Gays;Katarzyna Mickiewicz;E. Buchanan;C. Brooks

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NKRP1受体在20多年前被发现,但由于缺乏合适的试剂,我们对它们的了解仍然有限。使用一组特异性识别小鼠NKRP1A、D和F分子的新型单克隆抗体,我们在这里报告了NKRP1D的表达仅限于NK细胞的一个亚群,但与Ly49受体相反,它似乎以正常的共显性方式表达。NKRP1D -和NKRP1D+ NK细胞功能不同,NKRP1D+细胞显示各种Ly49受体的表达减少,CD94/NKG2受体的表达升高,IFN-γ分泌和细胞毒性高于NKRP1D -细胞。此外,NKRP1D+ NK细胞不能杀死表达高水平Clr-b分子的转染细胞,但很容易杀死仅表达低水平Clr-b的MHC i类缺陷胚细胞。NKRP1A和NKRP1F在所有脾和骨髓NK细胞中均有低水平表达,但单克隆抗体诱导的NKRP1A和NKRP1F交联没有显著增强或抑制NK细胞的细胞毒性,也没有检测到IFN-γ的产生。NKT细胞均表达NKRP1C,但未检测到NKRP1A、D和F的表达,尽管一些活化的T细胞表达NKRP1C和可能低水平的NKRP1A,但未检测到NKRP1D或F的显著表达。在NK细胞或转染物上表达的NKRP1分子通过与单克隆抗体或细胞表面配体交联而下调,将这一现象作为NKRP1-配体相互作用的功能分析显示,NKRP1F可以识别CLR-x。
NKRP1 receptors were discovered more than 20 years ago, but due to a lack of appropriate reagents, our understanding of them has remained limited. Using a novel panel of mAbs that specifically recognize mouse NKRP1A, D, and F molecules, we report here that NKRP1D expression is limited to a subpopulation of NK cells, but in contrast to Ly49 receptors appears to be expressed in a normal codominant manner. NKRP1D− and NKRP1D+ NK cells are functionally distinct, NKRP1D+ cells showing reduced expression of various Ly49 receptors, elevated expression of CD94/NKG2 receptors, and higher IFN-γ secretion and cytotoxicity than NKRP1D− cells. Furthermore, NKRP1D+ NK cells were unable to kill transfected cells expressing high levels of Clr-b molecules, but readily killed MHC class-I-deficient blast cells that express only low levels of Clr-b. NKRP1A and NKRP1F were expressed at low levels on all splenic and bone marrow NK cells, but mAb-induced cross-linking of NKRP1A and NKRP1F caused no significant enhancement or inhibition of NK cell cytotoxicity and no detectable production of IFN-γ. NKRP1A, D, and F expression could not be detected on NKT cells, all of which express NKRP1C, and although some activated T cells expressed NKRP1C and perhaps low levels of NKRP1A, no significant expression of NKRP1D or F could be detected. NKRP1 molecules expressed on NK cells or transfectants were down-regulated by cross-linking with mAbs or cell surface ligands, and using this phenomenon as a functional assay for NKRP1-ligand interaction revealed that NKRP1F can recognize CLR-x.
CD8 T 细胞对 MHC I 类缺陷骨髓的同种特异性排斥。
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影响因子: --
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DOI: 10.1089/hyb.1989.8.605
发表时间: 1989
期刊: Hybridoma
影响因子: --
作者:
Sentman,CL;HackettJr,J;Moore,TA;Tutt,MM;Bennett,M;Kumar,V
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DOI: --
发表时间: 1983
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
作者:
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通讯作者: Henney,CS