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首页> 外文期刊>Cellular immunology >BTLA-expressing CD11c antigen presenting cells in patients with active tuberculosis exhibit low capacity to stimulate T cell proliferation
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BTLA-expressing CD11c antigen presenting cells in patients with active tuberculosis exhibit low capacity to stimulate T cell proliferation

机译:在有源结核病患者中表达表达CD11C抗原呈现细胞表现出低能力刺激T细胞增殖

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摘要

Despite past extensive studies on B and T lymphocyte attenuator (BTLA)-mediated negative regulation of T cell activation, the role of BTLA in antigen presenting cells (APCs) in patients with active pulmonary tuberculosis (ATB) remains poorly understood. Here, we demonstrate that BTLA expression on CD11c APCs increased in patients with ATB. Particularly, BTLA expression in CD11c APCs was likely associated with the attenuated stimulatory capacity on T cells (especially CD8+ T cell) proliferation. BTLAexpressing CD11c APCs showed lower antigen uptake capacity, lower CD86 expression, higher HLA-DR expression, and enhanced IL-6 secretion, compared to counterpart BTLA negative CD11c APCs in healthy controls (HC). Interestingly, BTLA-expressing CD11c APCs from ATB patients displayed lower expression of HLA-DR and less IL-6 secretion, but higher expression of CD86 than those from HC volunteers. Mixed lymphocyte reaction suggests that BTLA expression is likely associated with positive rather than conventional negative regulation of CD11c APCs stimulatory capacity. This role is impaired in ATB patients manifested by low expression of HLA-DR and low production of IL-6. This previous unappreciated role for BTLA may have implications in the prevention and treatment of patients with ATB. (C) 2016 Elsevier Inc. All rights reserved.
机译:尽管对B和T淋巴细胞衰减器(BTLA)介导的T细胞活化的负调节进行了广泛的研究,但BTLA在抗原呈递肺结核(ATB)患者抗原(APC)中的作用仍然明确。在这里,我们证明了ATB患者CD11C APC上的BTLA表达增加。特别地,CD11C APC中的BTLA表达可能与T细胞(特别是CD8 + T细胞)增殖的减毒刺激容量有关。与对应于BTLA阴性CD11C APC在健康对照(HC)中的对应BTLA阴性CD11C APC相比,BTlaExpraming CD11C APCs显示出较低的抗原摄取容量,降低CD86表达,更高的HLA-DR表达和增强的IL-6分泌。有趣的是,来自ATB患者的BTLA表达CD11C APCs显示出HLA-DR和较少IL-6分泌的表达,但CD86的表达比来自HC志愿者的表达更高。混合淋巴细胞反应表明,BTLA表达可能与CD11C APCS刺激能力的阳性而不是常规的负调节相关。通过低表达HLA-DR和IL-6的低产生表现出的ATB患者,这种作用受损。此前对BTLA的未经申请的作用可能对ATB患者的预防和治疗有影响。 (c)2016年Elsevier Inc.保留所有权利。

著录项

  • 来源
    《Cellular immunology》 |2017年第2017期|共8页
  • 作者单位

    Guangdong Med Univ Inst Lab Med Dept Clin Immunol 1 Xincheng Rd Dongguan 523808 Peoples R China;

    Guangdong Med Univ Inst Lab Med Dept Clin Immunol 1 Xincheng Rd Dongguan 523808 Peoples R China;

    Guangdong Med Univ Inst Lab Med Dept Clin Immunol 1 Xincheng Rd Dongguan 523808 Peoples R China;

    Guangdong Med Univ Inst Lab Med Dept Clin Immunol 1 Xincheng Rd Dongguan 523808 Peoples R China;

    Dongguan 6thHosp Dept Respirat Dongguan 523008 Peoples R China;

    Guangdong Med Univ Inst Lab Med Dept Clin Immunol 1 Xincheng Rd Dongguan 523808 Peoples R China;

    Guangdong Med Univ Inst Lab Med Dept Clin Immunol 1 Xincheng Rd Dongguan 523808 Peoples R China;

    Guangdong Med Univ Inst Lab Med Dept Clin Immunol 1 Xincheng Rd Dongguan 523808 Peoples R China;

    Guangdong Med Univ Inst Lab Med Dept Clin Immunol 1 Xincheng Rd Dongguan 523808 Peoples R China;

    Guangdong Med Univ Inst Lab Med Dept Clin Immunol 1 Xincheng Rd Dongguan 523808 Peoples R China;

    Guangdong Med Univ Inst Lab Med Dept Clin Immunol 1 Xincheng Rd Dongguan 523808 Peoples R China;

    Dongguan 6thHosp Dept Respirat Dongguan 523008 Peoples R China;

    Guangdong Med Univ Inst Lab Med Dept Clin Immunol 1 Xincheng Rd Dongguan 523808 Peoples R China;

    Univ Illinois Coll Med Dept Microbiol &

    Immunol Ctr Primate Biomed Res Chicago IL 60612 USA;

    Univ Maryland Sch Med Dept Med Baltimore MD 21201 USA;

    Guangdong Med Univ Inst Lab Med Dept Clin Immunol 1 Xincheng Rd Dongguan 523808 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 细胞生物学;
  • 关键词

    B and T lymphocyte attenuator; CD11c APCs; Stimulatory capacity; Antigen uptake; HLA-DR; HLA-I(A; B; C); CD86; IL-6;

    机译:B和T淋巴细胞衰减器;CD11C APCS;刺激能力;抗原摄取;HLA-DR;HLA-I(A;B;C);CD86;IL-6;

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