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Titolo:
Construction, characterization and immunogenicity of recombinant yellow fever 17D-dengue type 2 viruses
Autore:
Caufour, PS; Motta, MCA; Yamamura, AMY; Vazquez, S; Ferreira, II; Jabor, AV; Bonaldo, MC; Freire, MS; Galler, R;
Indirizzi:
Fundacao Oswaldo Cruz, Inst Oswaldo Cruz, Dept Bioquim & Biol Mol, BR-21045900 Rio De Janeiro, Brazil Fundacao Oswaldo Cruz Rio De Janeiro Brazil BR-21045900 BCaneiro, Brazil Inst Tecnol Imunobiol, Dept Desenvolvimento Tecnol, BR-21045900 Rio De Janeiro, Brazil Inst Tecnol Imunobiol Rio De Janeiro Brazil BR-21045900 BCaneiro, Brazil Inst Med Trop Pedro Kouri, Dept Virol, Havana 10400, Cuba Inst Med Trop Pedro Kouri Havana Cuba 10400 pt Virol, Havana 10400, Cuba
Titolo Testata:
VIRUS RESEARCH
fascicolo: 1-2, volume: 79, anno: 2001,
pagine: 1 - 14
SICI:
0168-1702(20011105)79:1-2<1:CCAIOR>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
NEW-GUINEA-C; NUCLEOTIDE-SEQUENCE; JAPANESE ENCEPHALITIS; ENVELOPE PROTEIN; VACCINE STRAINS; DENGUE VACCINE; IN-VITRO; PRM; EXPRESSION; CLEAVAGE;
Keywords:
YF 17D virus recombinants; dengue vaccine; immunogenicity;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
38
Recensione:
Indirizzi per estratti:
Indirizzo: Galler, R Fundacao Oswaldo Cruz, Inst Oswaldo Cruz, Dept Bioquim & Biol Mol, BR-21045900 Rio De Janeiro, Brazil Fundacao Oswaldo Cruz Rio De Janeiro Brazil BR-21045900 BCazil
Citazione:
P.S. Caufour et al., "Construction, characterization and immunogenicity of recombinant yellow fever 17D-dengue type 2 viruses", VIRUS RES, 79(1-2), 2001, pp. 1-14

Abstract

Chimeric yellow fever (YF)-dengue type 2 (Den 2) viruses were constructed by replacing the premembrane (prM) and envelope (E) genes of YF 17D virus with those from Den 2 virus strains of south-east Asian genotype. Whereas viable chimeric viruses were successfully recovered when the YF 17D C gene and the Den 2 prM gene were fused at the signalase cleavage site, no virus could be rescued from the constructions fused at the viral protease cleavage site. Unlike YF virus that replicated in all the cell lines tested and similar to the Den 2 virus, the recombinant viruses did not replicate in vaccine-production certified CEF and MRC5 cells. Besides, chimeric 17D/Den 2 viruses and their parental viruses reached similar growth titers in Vero and C6/36 cell cultures. Analysis of mouse neurovirulence, performed by intracerebral inoculation, demonstrated that the 17D/Den 2 chimera is more attenuated in this system than the YF 17DD virus. Immunization of mice with this chimera induced a neutralizing antibody response associated with a partial protection against an otherwise lethal dose of mouse neurovirulent Den 2 NGC virus. Overall, these results provide further support for the use of chimeric viruses as an attractive methodology for the development of new live flavivirus vaccines. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/04/20 alle ore 18:37:33