Recombinant Derp5 allergen with αS1-casein signal peptide secreted in murine milk protects against dust mite allergen-induced airway inflammation
| Autor: | Hsu Chung Liu, Tung Chou Tsai, Shun Yuan Pai, Winston T.K. Cheng, Chuan-Mu Chen, Cheng Wei Lai, Shang Hsun Yang, Hsiao Ling Chen |
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| Rok vydání: | 2014 |
| Předmět: |
Genetically modified mouse
Signal peptide Transgene Dermatophagoides pteronyssinus Blotting Western Respiratory System Mice Transgenic Biology Protein Sorting Signals medicine.disease_cause law.invention Arthropod Proteins Mice Allergen Western blot Antigen law Complementary DNA Genetics medicine Animals Antigens Dermatophagoides Promoter Regions Genetic Phylogeny Inflammation medicine.diagnostic_test food and beverages Caseins Molecular biology Recombinant Proteins Disease Models Animal Milk Recombinant DNA Lactalbumin Animal Science and Zoology Female Food Science |
| Zdroj: | Journal of dairy science. 97(11) |
| ISSN: | 1525-3198 |
| Popis: | Recent advances in recombinant technology make transgenic animals that produce pharmaceutical proteins in their milk more feasible. The group 5 allergen isolated from Dermatophagoides pteronyssinus (Derp5) is one of the most important dust mite allergens in humans. The aims of this study were to develop transgenic mice that could secrete recombinant Derp5-containing milk and to demonstrate that ingesting recombinant milk protects against allergic airway inflammation. Two transgenes were constructed separately. The α-LA-Derp5f transgene consisted of the bovine α-lactalbumin (α-LA) promoter and full-length Derp5 cDNA. The α-LA-CN-Derp5t transgene included the α-LA promoter, a leader sequence of αS1-casein (CN), and signal peptide-truncated Derp5 cDNA. Both species of transgenic mice were confirmed to have successful transgene integration and stable germline transmission. Western blot analysis of the milk obtained from the offspring of transgenic mice demonstrated that recombinant Derp5 was secreted successfully in the milk of αLA-CN-Derp5t transgenic mice but not in that of αLA-Derp5f transgenic mice. This study provides new evidence that transgenic mice can secrete recombinant Derp5 efficiently in milk by adding a signal peptide of αS1-casein. The antigenic activity of recombinant Derp5 milk was demonstrated to have a protective effect against allergic airway inflammation in a murine model in which the ingestion of recombinant Derp5-containing milk was used as pretreatment. |
| Databáze: | OpenAIRE |
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