Nondepleting anti-CD4 antibody treatment prolongs lung-directed E1-deleted adenovirus-mediated gene expression in rats.

Nondepleting anti-CD4 antibody treatment prolongs lung-directed E1-deleted adenovirus-mediated gene expression in rats.
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非耗尽型抗 CD4 抗体治疗可延长大鼠体内 E1 缺失腺病毒介导的肺定向基因表达。

DOI:
10.1089/hum.1996.7.18-2273
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发表时间:
1996
期刊:
影响因子:
4.2
通讯作者:
Kolls,JK
Kolls,JK
中科院分区:
医学2区
文献类型:
--
作者:
Lei,D;Lehmann,M;Shellito,JE;Nelson,S;Siegling,A;Volk,HD;Kolls,JK

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E1缺失腺病毒载体是体细胞基因治疗的有效载体,但转基因表达部分受到针对病毒转导细胞的细胞毒性T细胞应答的限制。此外,中和抗体反应的发展限制了用这些载体的二次基因转移。使用消耗性抗CD 4抗体的治疗允许在小鼠的肺和肝中延长转基因表达。此外,CD 4+淋巴细胞的瞬时消耗阻断了中和抗体的产生,因此允许E1缺失重组腺病毒的重复给药和表达。在这项研究中,我们研究了一种新的非消耗性抗CD 4抗体(RIB 5/2)在远交系大鼠肺定向基因治疗模型中的疗效。用RIB 5/2治疗可以延长报告基因的表达,减少腺病毒诱导的支气管周围和肺泡炎症。此外,RIB 5/2的施用阻断了肺中抗腺病毒中和抗体应答的发展,并允许重组腺病毒的二次施用和表达。这些数据支持免疫调节在重组腺病毒体内表达转基因中的作用。
E1-deleted adenoviral vectors are efficient vectors for somatic cell gene therapy, but transgene expression is limited in part by a cytotoxic T cell response directed against virally transduced cells. Moreover, the development of a neutralizing antibody response limits secondary gene transfer with these vectors. Therapy with a depleting anti-CD4 antibody permits prolonged transgene expression in the lung and liver of mice. Furthermore, transient depletion of CD4+lymphocytes blocks neutralizing antibody production and therefore allows repeat administration and expression of E1-deleted recombinant adenovirus. In this study, we investigated the efficacy of a novel nondepleting anti-CD4 antibody (RIB 5/2) in a model of lung-directed gene therapy in outbred rats. Treatment with RIB 5/2 permitted prolonged reporter gene expression and reduced adenovirus-induced peribronchial and alveolar inflammation in the lung. Moreover administration of RIB 5/2 blocked the development of an anti-adenoviral neutralizing antibody response in the lung and permitted secondary administration and expression of a recombinant adenovirus. These data support the role of immunomodulation in prolongingin vivotransgene expression by recombinant adenovirus.
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