Vitamin D receptor restricts T helper 2-biased inflammation in the heart

Vitamin D receptor restricts T helper 2-biased inflammation in the heart
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维生素 D 受体限制心脏中 T 辅助细胞 2 偏向性炎症

DOI:
10.1093/cvr/cvy034
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发表时间:
2018-05
影响因子:
10.8
通讯作者:
Yang Ping-Chang
Yang Ping-Chang
中科院分区:
医学1区
文献类型:
--
作者:
Song Jiangping;Chen Xiao;Cheng Liang;Rao Man;Chen Kai;Zhang Ningning;Meng Jian;Li Mengmeng;Liu Zhi-Qiang;Yang Ping-Chang

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背景与目的 异常的免疫反应在心肌炎的发病机制中起重要作用。维生素D受体(VDR)具有免疫调节功能。本研究旨在探讨VDR在抑制心脏免疫炎症中的作用。 方法和结果 人心脏标本取自心脏移植。通过组织学和免疫学方法观察心脏组织中辅助性T细胞(Th)2和Th 1反应。在实验中使用VDR-/-小鼠和重组激活基因2-/-小鼠来测试VDR在维持心脏内稳态中的作用。结果表明,心肌炎心衰终末期患者心脏组织损伤的同时,VDR表达降低,Th 2细胞频率增高,Th 2细胞因子水平升高。在VDR-/-小鼠的心脏中观察到自发性Th 2偏向的炎症。来自VDR-/-小鼠心脏的CD 4 + T细胞处于高度活化状态。CD 4 + T细胞和VDR-/-CD 4 + T细胞在心肌炎患者心脏中均易分化为Th 2细胞。VDR与IL-4转录因子GATA 3形成复合物,阻止IL-4基因转录。移植VDR-/-CD 4 + T细胞可诱导Rag 2-/-小鼠心脏Th 2偏向性炎症反应。在CD 4 + T细胞中重建VDR抑制心脏中的Th 2偏向性炎症。 结论 VDR缺乏有助于心肌炎的发病机制。提高CD 4+细胞VDR的表达,T细胞具有治疗心肌炎的潜力。
Background and aims The aberrant immune responses play a critical role in the pathogenesis of myocarditis. Vitamin D receptor (VDR) has immune regulatory functions. This study aims to investigate the role of VDR in restricting the immune inflammation in the heart. Methods and results The human heart samples were obtained from the heart transplantation. T helper (Th)2 and Th1 responses in the heart tissue were characterized by histology and immune assay. VDR-/- mice and recombination activating gene 2-/- mice were used in the experiments to test the role of VDR in maintaining the homeostasis in the heart. The results showed that, besides tissue damage, lower expression of VDR, high frequency of Th2 cells and increase in Th2 cytokines in the hearts of patients with myocarditis at the end stage of heart failure. The spontaneous Th2-biased inflammation was observed in the hearts of VDR-/- mice. CD4+ T cells from the VDR-/- mouse hearts were at highly activating status. The naïve VDR-/- CD4+ T cells and naïve CD4+ T cells from human hearts with myocarditis were prone to differentiate into Th2 cells. VDR formed complexes with GATA3, the interleukin (IL)-4 transcription factor, to prevent the Il4 gene transcription. Transplantation with VDR-/-CD4+ T cells induced the Th2-biased inflammation in the hearts of Rag2-/- mice. Reconstitution of VDR in CD4+ T cells inhibited the Th2-biased inflammation in the heart. Conclusions VDR-deficiency contributes to the pathogenesis of myocarditis. To enhance the VDR expression in CD4+, T cells haves the therapeutic potential for the treatment of myocarditis.
DOI: 10.1007/s10380-002-0689-2
发表时间: 2003-05
期刊: Heart and Vessels
影响因子: 1.5
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S. Umemoto;Kazuo Itagaki;M. Kimura;S. Itoh;Masakazu Tanaka;M. Haraguchi;M. Matsuzaki
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DOI: 10.1177/0960327115571766
发表时间: 2015-11-01
影响因子: 2.8
作者:
do Nascimento, A. M.;de Lima, E. M.;de Andrade, T. U.
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DOI: 10.1016/j.carpath.2013.02.004
发表时间: 2013-09-01
影响因子: 3.7
作者:
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