Fusion PCR generated Japanese encephalitis virus/dengue 4 virus chimera exhibits lack of neuroinvasiveness, attenuated neurovirulence, and a dual-flavi immune response in mice
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چکیده
منابع مشابه
Immune response to Japanese Encephalitis virus in mother mice and their congenitally infected offspring.
The immune response to Japanese encephalitis virus (JEV) was assessed in JEV-infected mice (mothers) and their offspring. The congenitally infected baby mice responded poorly in all assays for cell-mediated immunity. The total number of their splenic cells remained unaltered but the percentage of T cells was significantly reduced; a depressed delayed hypersensitivity response was seen against b...
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Variants of the prototype Murray Valley encephalitis virus (MVE-1-51) were selected by serial plaque purification and amplification in monkey kidney (Vero) cells. Four clones (C1-C4) at passage levels two and nine (P2 and P9) were examined in 21-day-old Swiss outbred mice for neuroinvasiveness (assessed from LD50 values after intraperitoneal inoculation) and neurovirulence (LD50 values after in...
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BACKGROUND During clinical development of the licensed Japanese encephalitis chimeric virus vaccine (JE-CV), the neutralization capacity of vaccine-induced antibodies was assessed against the vaccine virus and against well characterized wild-type (wt) viruses isolated between 1949-1991. We assessed whether JE-CV-induced antibodies can also neutralize more recent wt Japanese encephalitis virus (...
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Mouse-adapted dengue type 4 virus (DEN4) strain H241 is highly neurovirulent for mice, whereas its non-mouse-adapted parent is rarely neurovirulent. The genetic basis for the neurovirulence of the mouse-adapted mutant was studied by comparing intratypic chimeric viruses that contained the three structural protein genes from the parental virus or the neurovirulent mutant in the background sequen...
متن کاملCharacterization of monoclonal antibody-escape mutants of tick-borne encephalitis virus with reduced neuroinvasiveness in mice.
Escape mutants of tick-borne encephalitis (TBE) virus were selected using neutralizing monoclonal antibodies (MAbs) that react with three different and previously unrecognized epitopes in the envelope protein E of TBE virus. Two of these variants (V-IC3 and V-IE3) exhibited a significantly reduced reactivity with their selecting MAbs, as determined by ELISA, whereas with one variant (V-IO3), re...
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ژورنال
عنوان ژورنال: Journal of General Virology
سال: 2004
ISSN: 0022-1317,1465-2099
DOI: 10.1099/vir.0.80120-0