Designing and engineering of DNA-vaccine construction encoding multiple CTL-epitopes of major HIV-1 antigens.

Abstract:

:A synthetic T cell immunogen (TCI) has been designed as a candidate DNA-based vaccine against Human immunodeficiency virus (HIV)-1 using cytotoxic T lymphocytes (CD8(+) CTL) and T-helper lymphocytes (CD4(+) Th) epitopes retrieved from the Los Alamos HIV Molecular Immunology Database. The protein 392 amino acids in length contains about eighty CTL-epitopes, many of which are overlapping and are totally restricted by ten different HLA class I molecules. To be able to detect CTL responses induced by a DNA vaccine in experimental animals, additional epitopes, restricted by mouse and Macaque rhesus major histocompatibility complex (MHC) class I molecules, were included in the target immunogen. The gene encoding the TCI protein was assembled, cloned into vector plasmids and expressed in a prokaryotic and a eukaryotic system. The presence of HIV-1 protein fragments in the immunogen structure was ascertained by ELISA and immunoblotting using panels of HIV-1-positive sera and monoclonal antibodies to p24. It has been demonstrated that DNA vaccine can induce both specific T cell responses (CTL and blast transformation) and specific antibodies in mice immunized with pcDNA-TCI.

journal_name

Vaccine

journal_title

Vaccine

authors

Bazhan SI,Belavin PA,Seregin SV,Danilyuk NK,Babkina IN,Karpenko LI,Nekrasova NA,Lebedev LR,Ignatyev GM,Agafonov AP,Poryvaeva VA,Aborneva IV,Ilyichev AA

doi

10.1016/j.vaccine.2003.09.048

subject

Has Abstract

pub_date

2004-04-16 00:00:00

pages

1672-82

issue

13-14

eissn

0264-410X

issn

1873-2518

pii

S0264410X04000908

journal_volume

22

pub_type

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