Bacterially Expressed Influenza Virus Recombinant HA Proteins for Vaccine and Diagnostic Applications
Pandemic H1N1 influenza virus is a recently emergent strain of influenza virus that the World Health Organization (WHO) estimates has killed at least 14,711 people worldwide. Avian influenza viruses are emerging health threats with pandemic potential. Due to their global health implications, there has been a massive international effort to produce protective vaccines against these influenza virus strains. Currently, influenza virus vaccines are produced in chicken eggs, a production method that is disadvantaged by lengthy vaccine production times and by inability to meet large-scale, global demands.
The subject technologies are specific recombinant HA proteins from H1N1, H5N1, and other strains of influenza virus produced in bacteria. The HA proteins properly fold, form oligomers, bind fetuin, agglutinate red blood cells and induce strong neutralizing antibody titers in several in vivo animal models. The key advantages of this technology are that expression of these proteins in bacteria reduces the vaccine production time and offers the ease of scalability for global usage, an issue with current production methods. The recombinant HA proteins can also be used for diagnostic applications.
Potential Commercial Applications:
- Vaccines for the prevention of influenza infection
- Diagnostics for influenza virus specific antibodies
- Novel vaccine candidates
- Rapid production time
- Ease of scalability
Khurana S, et al. PMID 21704111
Bill Ronnenberg, JD-MIP, MS
FDA Technology Transfer Program
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OTT Reference No: E-032-2010/1
Updated: August 6, 2015