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Updated: Jun 17, 2026

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Development and Validation of an Ultrasensitive Single Molecule Array Digital Enzyme-linked Immunosorbent Assay for Human Interferon-α
Published on: June 14, 2018
[Human recombinant interferon-B constructed on the basis of affinity-binding domain technology]
Molekuliarnaia Genetika, Mikrobiologiia I Virusologiia
|December 19, 2009
Summary
A novel chimeric protein combining a dextran-binding domain and human interferon-beta was engineered in E. coli. This fusion protein allows for the purification of active interferon-beta, demonstrating its potential for antiviral therapies.
Area of Science:
- Recombinant protein engineering
- Molecular biology
- Immunology
Context:
- Interferon-beta (IFN-beta) is a crucial antiviral and immunomodulatory protein.
- Efficient purification of recombinant proteins is essential for therapeutic applications.
- Fusion protein strategies can facilitate protein purification and enhance biological activity.
Purpose:
- To construct a fusion protein (DBD-IFN-beta) in E. coli, combining a dextran-binding domain (DBD) with human IFN-beta.
- To develop a purification method for active human recombinant IFN-beta using the chimeric protein.
- To evaluate the antiviral activity of both purified and immobilized DBD-IFN-beta.
Summary:
- A fusion gene encoding a chimeric protein, DBD-IFN-beta, was successfully constructed and expressed in Escherichia coli.
- The chimeric protein, immobilized on Sephadex G-25, was cleaved by human enteropeptidase to release free human recombinant IFN-beta.
- Both free and immobilized DBD-IFN-beta exhibited protective effects against viral infection in human cells.
Impact:
- This approach enables the purification of active recombinant proteins, including IFN-beta.
- The developed strategy holds potential for creating novel immunostimulating, antiviral, and anti-cancer drugs.
- It offers a versatile platform for the production of therapeutic proteins and growth factors.
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