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免疫反应阻碍了溶酶体贮积症的治疗。

Immune response hinders therapy for lysosomal storage diseases.

作者信息

Ponder Katherine P

机构信息

Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri 63110, USA.

出版信息

J Clin Invest. 2008 Aug;118(8):2686-9. doi: 10.1172/JCI36521.

Abstract

Enzyme replacement therapy (ERT) for the lysosomal storage disease mucopolysaccharidosis I (MPS I) involves i.v. injection of alpha-l-iduronidase, which can be taken up by cells throughout the body. While a significant immune response to ERT has been shown in patients with MPS I, little is known about what effect anti-enzyme antibodies have on treatment efficacy. In this issue of the JCI, Dickson et al. demonstrate that anti-enzyme antibodies inhibit enzyme uptake and substantially limit the therapeutic efficacy of ERT in canines with MPS I (see the related article beginning on page 2868). Furthermore, the induction of immune tolerance--via oral delivery of cyclosporine A and azathioprine for two months at the time of initiation of ERT with recombinant human alpha-L-iduronidase--improved enzyme uptake in organs. Therefore, transient immunosuppression may enhance ERT for lysosomal storage diseases.

摘要

用于溶酶体贮积病黏多糖贮积症I型(MPS I)的酶替代疗法(ERT)涉及静脉注射α-L-艾杜糖醛酸酶,该酶可被全身细胞摄取。虽然已在MPS I患者中显示出对ERT的显著免疫反应,但对于抗酶抗体对治疗效果有何影响却知之甚少。在本期《临床研究杂志》中,迪克森等人证明抗酶抗体抑制酶摄取,并在很大程度上限制了ERT对患有MPS I的犬类的治疗效果(见第2868页开始的相关文章)。此外,在开始使用重组人α-L-艾杜糖醛酸酶进行ERT时,通过口服环孢素A和硫唑嘌呤两个月来诱导免疫耐受,可改善器官中的酶摄取。因此,短暂的免疫抑制可能会增强针对溶酶体贮积病的ERT效果。

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