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High level expression of recombinant chicken interferon-alpha using baculovirus
Ruttapong Ruttanapumma1, Masayuki Nakamura, Kazuaki Takehara
1Laboratory of Poultry Diseases, School of Veterinary Medicine and Animal Sciences, Kitasato University, Towada, Aomori, Japan.
The Journal of Veterinary Medical Science
|February 9, 2005
Summary
Recombinant chicken interferon-alpha (ChIFN-alpha) was successfully produced using a baculovirus system. The purified ChIFN-alphaHis protein demonstrated significant anti-viral activity in laboratory tests.
Area of Science:
- Biotechnology
- Virology
- Immunology
Background:
- Interferons are crucial antiviral proteins.
- Chicken interferon-alpha (ChIFN-alpha) plays a role in innate immunity.
- Efficient production of bioactive ChIFN-alpha is essential for research.
Purpose of the Study:
- To express and purify bioactive recombinant chicken interferon-alpha (ChIFN-alpha).
- To facilitate purification using a histidine hexamer (His-tag).
- To confirm the anti-viral activity of the purified protein.
Main Methods:
- Expression of ChIFN-alpha with a C-terminal His-tag in a baculovirus system.
- Detection of expressed proteins using SDS-PAGE and Coomassie brilliant blue staining.
- Purification of ChIFN-alphaHis using a nickel chelated column.
Main Results:
- Recombinant ChIFN-alphaHis was successfully expressed.
- SDS-PAGE analysis identified immature (~23 kDa) and mature (~19 kDa) protein bands.
- Purified ChIFN-alphaHis exhibited anti-viral activity in vitro.
Conclusions:
- Bioactive recombinant ChIFN-alphaHis can be produced efficiently using a baculovirus expression system.
- The His-tag facilitates purification.
- The purified protein retains its anti-viral properties.