Genetic engineering of IgG-glucuronidase fusion proteins.

Genetic engineering of IgG-glucuronidase fusion proteins.
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DOI:
10.3109/10611860903353362
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发表时间:
2010-04
影响因子:
4.5
通讯作者:
Pardridge WM
Pardridge WM
中科院分区:
医学3区
文献类型:
--
作者:
Boado RJ;Pardridge WM

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β-葡糖苷酶(GUSB)是一种溶酶体酶,可用于治疗VII型粘多糖病。然而,GUSB不能穿过血脑屏障(BBB)。为了使酶能够在血脑屏障中运输,将人GUSB重新设计为具有人胰岛素受体(HIR)嵌合单克隆抗体(MAb)的融合蛋白。HIRMAb穿过内源性胰岛素受体上的血脑屏障,并作为分子特洛伊木马将GUSB运送到大脑。611氨基酸GUSB被融合到HIRMAb重链的羧基端或氨基端。本研究说明了igg -酶融合蛋白的功能保留差异取决于融合蛋白的工程设计方式。
β-Glucuronidase (GUSB) is a lysosomal enzyme that could be developed as a brain therapy for Type VII Mucopolysaccharidosis. However, GUSB does not cross the blood-brain barrier (BBB). To enable BBB transport of the enzyme, human GUSB was re-engineered as a fusion protein with the chimeric monoclonal antibody (MAb) to the human insulin receptor (HIR). The HIRMAb crosses the BBB on the endogenous insulin receptor, and acts as a molecular Trojan horse to ferry into brain the GUSB. The 611 amino acid GUSB was fused to either the carboxyl or amino terminus of the heavy chain of the HIRMAb. This study illustrates the differential retention of functionality of IgG-enzyme fusion proteins depending on how the fusion protein is engineered.
DOI: 10.1159/000054584
发表时间: 2000-09-01
期刊: NEUROENDOCRINOLOGY
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