Dystrophin conferral using human endothelium expressing HLA-E in the non-immunosuppressive murine model of Duchenne muscular dystrophy.

Dystrophin conferral using human endothelium expressing HLA-E in the non-immunosuppressive murine model of Duchenne muscular dystrophy.
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使用人内皮表达HLA-E的肌营养不良蛋白在Duchenne肌肉营养不良的非免疫抑制鼠模型中。

DOI:
10.1093/hmg/ddq458
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发表时间:
2011-01-15
影响因子:
3.5
通讯作者:
Umezawa A
Umezawa A
中科院分区:
生物学2区
文献类型:
--
作者:
Cui CH;Miyoshi S;Tsuji H;Makino H;Kanzaki S;Kami D;Terai M;Suzuki H;Umezawa A

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人类白细胞抗原(HLAE)是一种非经典的主要组织相容性复合体I类(Ib)分子,在免疫抑制中起重要作用。在这项研究中,我们利用小鼠模型中表达人类胎盘动脉内皮细胞(HPAE)的人胎盘动脉来源的内皮(HPAE)细胞,研究了HLAE在异种系统中的免疫调节作用。体外细胞裂解分析表明,人类白细胞抗原-E在抑制免疫应答中是必需的。类似地,体内细胞移植分析表明,siRNA介导的人类白细胞抗原-E的下调与免疫抑制有关。随着HPAE细胞在体外高效地转化为成肌细胞/肌细胞,我们将这些细胞移植到Duchenne肌营养不良症模型MDX小鼠体内。HPAE细胞以极高的效率将dystrophin赋予免疫活性的mdx小鼠的心肌细胞。这些发现表明,具有肌源性潜能的人类白细胞抗原-E表达细胞是肌肉营养不良患者细胞治疗的一个有前途的来源。
Human leukocyte antigen (HLA)-E is a non-classical major histocompatibility complex class I (Ib) molecule, which plays an important role in immunosuppression. In this study, we investigated the immunomodulating effect of HLA-E in a xenogeneic system, using human placental artery-derived endothelial (hPAE) cells expressing HLA-E in a mouse model. In vitro cell lysis analysis by primed lymphocytes in combination with siRNA transfection showed that HLA-E is necessary for inhibition of the immune response. Similarly, in vivo cell implantation analysis with siRNA-mediated down-regulation of HLA-E demonstrates that HLA-E is involved in immunosuppression. As hPAE cells efficiently transdifferentiate into myoblasts/myocytes in vitro, we transplanted the cells into mdx mice, a model of Duchenne muscular dystrophy. hPAE cells conferred dystrophin to myocytes of the ‘immunocompetent' mdx mice with extremely high efficiency. These findings suggest that HLA-E-expressing cells with a myogenic potential represent a promising source for cell-based therapy of patients with muscular dystrophy.
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