| Autor: |
Steven Q. Le, Shih-hsin Kan, Don Clarke, Valentina Sanghez, Martin Egeland, Kristen N. Vondrak, Terence M. Doherty, Moin U. Vera, Michelina Iacovino, Jonathan D. Cooper, Mark S. Sands, Patricia I. Dickson |
| Jazyk: |
angličtina |
| Rok vydání: |
2018 |
| Předmět: |
|
| Zdroj: |
Molecular Therapy: Methods & Clinical Development, Vol 8, Iss C, Pp 42-51 (2018) |
| Druh dokumentu: |
article |
| ISSN: |
2329-0501 |
| DOI: |
10.1016/j.omtm.2017.09.008 |
| Popis: |
Antibodies against recombinant proteins can significantly reduce their effectiveness in unanticipated ways. We evaluated the humoral response of mice with the lysosomal storage disease mucopolysaccharidosis type I treated with weekly intravenous recombinant human alpha-l-iduronidase (rhIDU). Unlike patients, the majority of whom develop antibodies to recombinant human alpha-l-iduronidase, only approximately half of the treated mice developed antibodies against recombinant human alpha-l-iduronidase and levels were low. Serum from antibody-positive mice inhibited uptake of recombinant human alpha-l-iduronidase into human fibroblasts by partial inhibition compared to control serum. Tissue and cellular distributions of rhIDU were altered in antibody-positive mice compared to either antibody-negative or naive mice, with significantly less recombinant human alpha-l-iduronidase activity in the heart and kidney in antibody-positive mice. In the liver, recombinant human alpha-l-iduronidase was preferentially found in sinusoidal cells rather than in hepatocytes in antibody-positive mice. Antibodies against recombinant human alpha-l-iduronidase enhanced uptake of recombinant human alpha-l-iduronidase into macrophages obtained from MPS I mice. Collectively, these results imply that a humoral immune response against a therapeutic protein can shift its distribution preferentially into macrophage-lineage cells, causing decreased availability of the protein to the cells that are its therapeutic targets. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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