| Literature DB >> 29252117 |
D Korenkov1,2, T H O Nguyen2, I Isakova-Sivak1, T Smolonogina1, L E Brown2, K Kedzierska2, L Rudenko1.
Abstract
Live attenuated influenza vaccines (LAIV) induce CD8+ T lymphocyte responses that play an important role in killing virus-infected cells. Despite the relative conservation of internal influenza A proteins, the epitopes recognized by T cells can undergo drift under immune pressure. The internal proteins of Russian LAIVs are derived from the master donor virus A/Leningrad/134/17/57 (Len/17) isolated 60 years ago and as such, some CD8+ T cell epitopes may vary between the vaccine and circulating wild-type strains. To partially overcome this issue, the nucleoprotein (NP) gene of wild-type virus can be incorporated into LAIV reassortant virus, along with the HA and NA genes. The present study compares the human CD8+ T cell memory responses to H3N2 LAIVs with the Len/17 or the wild-type NP using an in vitro model.Entities:
Keywords: Antigenic escape; LAIV; T cell epitope; influenza; nucleoprotein
Mesh:
Substances:
Year: 2018 PMID: 29252117 PMCID: PMC5893192 DOI: 10.1080/21645515.2017.1417713
Source DB: PubMed Journal: Hum Vaccin Immunother ISSN: 2164-5515 Impact factor: 3.452