Constitutive expression of high levels of soluble mouse CD4 in transgenic mice does not interfere with their immune function

Constitutive expression of high levels of soluble mouse CD4 in transgenic mice does not interfere with their immune function
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转基因小鼠高水平可溶性小鼠CD4组成型表达不干扰其免疫功能

DOI:
10.1002/eji.1830230232
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发表时间:
1993
影响因子:
5.4
通讯作者:
K. Karjalainen
K. Karjalainen
中科院分区:
医学3区
文献类型:
--
作者:
S. Weber;A. Traunecker;K. Karjalainen

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CD 4与主要组织相容性复合体(MHC)II类分子的相互作用在胸腺发育过程中至关重要,随后对单阳性CD 4 + CD 8 − T淋巴细胞的功能至关重要。在这里,我们研究了可溶性CD 4(sCD 4)对免疫系统的潜在影响。我们建立了两种不同的转基因小鼠系,它们在血清中组成性表达100 μg/ml单价或1020 μg/ml十价小鼠sCD 4分子。对这些小鼠的分析显示,与对照同窝小鼠相比无差异,例如,单阳性CD 4+细胞正常发育,这些细胞与对照小鼠的细胞一样,对同种异体和抗CD 3抗体刺激有反应。此外,体内抗体应答的T辅助细胞功能不受影响。我们的数据提供的证据表明,在小鼠中,CD 4-MHC II类相互作用具有非常低的亲和力。由于sCD 4被认为是人类免疫缺陷病毒感染的治疗剂,因此这些发现不仅具有基础意义,而且具有临床意义。
Interactions of CD4 with the major histocompatibility complex (MHC) class II molecules are crucial during thymic development and subsequently for the function of single‐positive CD4+CD8− T lymphocytes. Here, we have investigated the potential effects of soluble CD4 (sCD4) on the immune system. We generated two different transgenic mouse lines, which constitutively expressed either ˜100 μg/ml of monovalent or ˜20 μg/ml f decavalent mouse sCD4 molecules in their sera. Analysis of these mice revealed no differences compared to control littermates, e.g. the single‐positive CD4+ cells developed normally and these cells responded to allogeneic and anti‐CD3 antibody stimuli like the cells from control mice. Furthermore, the T helper cell function for antibody responses in vivo were not affected. Our data provide evidence that, in mouse, the CD4‐MHC class II‐interaction has very low affinity. Since sCD4 is considered to be a therapeutical agent for human immunodeficiency virus infection, these findings are not only of basic, but also of clinical interest.
T 细胞抗原受体同种异型决定簇特异性鼠单克隆抗体的表征。
DOI: --
发表时间: 1985
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影响因子: --
作者:
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发表时间: 1983-01-01
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DOI: --
发表时间: 1983
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
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DOI: 10.1073/pnas.85.15.5629
发表时间: 1988
影响因子: 11.1
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通讯作者: Marrack,P