Development of the A/H6N1 influenza vaccine candidate based on A/Leningrad/134/17/57 (H2N2) master donor virus and the genome composition analysis using high resolution melting (HRM)

Autor: Yulia A. Desheva, Tatiana A. Smolonogina, Galina O. Landgraf, Larisa G. Rudenko
Jazyk: English<br />Russian
Rok vydání: 2016
Předmět:
Zdroj: Microbiology Independent Research Journal, Vol 3, Iss 1, Pp 61-67 (2016)
Druh dokumentu: article
ISSN: 2500-2236
DOI: 10.18527/2500-2236-2016-3-1-61-67
Popis: The avian influenza viruses of H6N1subtype present a potential danger for humans. The cold-adapted ( ca ) reassortant influenza virus A/17/herring gull/Sarma/2006/887 (H6N1) was obtained in chicken embryos by the genetic reassortment based on the cold-adapted A/Leningrad/134/17/57 (H2N2) master strain. The genome composition of the obtained reassortant was analyzed by means of real-time PCR with the high resolution melting (HRM) analysis using the intercalating fluorescent dye EvaGreen. Analysis of the gene segments showed that the reassortant A/17/herring gull/Sarma/2006/887 (H6N1) contains the internal proteins coding genes (PB2, PB1, PA, NP, M, and NS) of the master donor virus and the surface antigens coding genes of the A/herring gull/Sarma/51c/2006 (H6N1) avian influenza virus. The study of the phenotypic properties showed that the virus A/17/herring gull/Sarma/2006/887 (H6N1) is temperature sensitive ( ts ), ca in chicken embryos, and attenuated in mice when administered intranasally. This reassortant can be recommended as a live influenza vaccine candidate for humans.
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