HCV prototipa vakcīna izveidota uz hepatīta B kora vīrus veidīgo daļiņu pamata
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Latvijas Universitāte
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Abstract
HCV prototipa vakcīna izveidota uz hepatīta B kora
vīrusveidīgo daļiņu pamata
Darba anotācija
Šajā pētījumā C termināli saīsinātie HBc ekspresijas vektori tika izmantoti
dažādu hepatīta C vīrusa (HCV) proteīnu (kora, E2 un NS3) fragmentu eksponēšanai.
Visas izveidotās konstrukcijas inducēja relatīvi augstu rekombinanto proteīnu sintēzes
līmeni E.coli šūnās, kaut gan ne visi himērie proteīni bija spējīgi pašsavākties
vīrusveidīgajās daļiņās (VLPs). HBcCterm/HVR1tetramer VLPs izrādījās par
visefektīvāko HBc/HCV imunogēnu no visām testētajām konstrukcijām. Tās spēja
inducēt HCV specifisku imūno atbildi, kā humorālu, tā arī T šūnu proliferatīvo.
Interesanti rezultāti tika iegūti ar HBcCterm/NS3/327-482 himēro proteīnu, jo tika
sasniegta tikai humorāla HCV specifiska imūnā atbilde. HCV specifiskas T šūnu
atbildes trūkums lika secināt par HBcCterm/NS3/327-482 konstrukcijas T šūnu
neatkarīgās imūnās atbildes indukciju.
HCV prototype vaccine based on hepatitis B core virus-like particles Abstract In the current study the C-terminally truncated HBc expression vectors were used for exposure of different hepatitis C virus (HCV) protein (core, E2, and NS3) fragments. All created chimeric constructs directed high level of recombinant protein synthesis in E.coli. However, not all chimeric proteins were able to self-assemble into virus-like particles (VLPs). HBcCterm/HVR1tetramer VLPs turned out to be a much more efficient immunogen of all HBc/HCV proteins tested. They were able to induce specific anti-HCV immune response, both humoral and T cell proliferative. Interesting results were acquired with the HBcCterm/NS3/327-482 chimeric protein, which induced only humoral HCV-specific response. The absence of the HCVspecific T cell proliferative response suggests induction of a T cell independent pathway of immune response by this construct.
HCV prototype vaccine based on hepatitis B core virus-like particles Abstract In the current study the C-terminally truncated HBc expression vectors were used for exposure of different hepatitis C virus (HCV) protein (core, E2, and NS3) fragments. All created chimeric constructs directed high level of recombinant protein synthesis in E.coli. However, not all chimeric proteins were able to self-assemble into virus-like particles (VLPs). HBcCterm/HVR1tetramer VLPs turned out to be a much more efficient immunogen of all HBc/HCV proteins tested. They were able to induce specific anti-HCV immune response, both humoral and T cell proliferative. Interesting results were acquired with the HBcCterm/NS3/327-482 chimeric protein, which induced only humoral HCV-specific response. The absence of the HCVspecific T cell proliferative response suggests induction of a T cell independent pathway of immune response by this construct.