0000000000512477

AUTHOR

Candida O. De Souza

showing 2 related works from this author

Rotavirus-Specific Cytotoxic T Lymphocytes Recognize Overlapping Epitopes in the Amino-Terminal Region of the VP7 Glycoprotein

1999

Abstract Rotavirus-specific cytotoxic T lymphocytes (CTL) play an important role in the resolution of rotavirus infection. The outer capsid glycoprotein, VP7, elicits a class I MHC-restricted CTL response. Vaccinia virus recombinants expressing the VP7 genes from simian rotavirus SA11 (serotype G3) and from the RF strain of bovine rotavirus (serotype G6) were used to analyze the CTL activity to this antigen in BALB/c (H-2 d ) and C57BL/6 (H-2 b ) mice neonatally infected with homologous and heterologous rotaviruses. A vaccinia virus recombinant expressing the first amino-terminal 88 amino acids of VP7 was constructed and used to search for cross-reactive CTL against this region of the prote…

RotavirusRecombinant Fusion ProteinsvirusesGenetic VectorsEpitopes T-LymphocyteGene ExpressionVaccinia virusBiologymedicine.disease_causeVirusEpitopeMicechemistry.chemical_compoundCapsidfluids and secretionsAntigenVirologyRotavirusmedicineAnimalsCytotoxic T cellAntigens ViralGlycoproteinschemistry.chemical_classificationMice Inbred BALB CVaccines SyntheticVaccinationH-2 Antigensvirus diseasesViral VaccinesVirologyMolecular biologyMice Inbred C57BLCTL*Animals NewbornchemistryCapsid ProteinsCattleVacciniaPeptidesGlycoproteinT-Lymphocytes CytotoxicVirology
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Homotypic Protection Against Rotavirus-Induced Diarrhea in Infant Mice Breast-Fed by Dams Immunized with the Recombinant VP8* Subunit of the VP4 Caps…

2000

The outer capsid proteins VP4 and VP7 induce neutralizing antibody against rotavirus. We have investigated in a mouse model the protection mediated by immunization with VP8*, the amino-terminal tryptic fragment of VP4. BALB/c female mice immunized with simian rotavirus SA11 VP6 and VP8* proteins expressed in Escherichia coli were mated with seronegative males. Litters were orally challenged with the SA11 strain (P5B[2], G3) or with the murine rotavirus strain EDIM (P10[16], G3) to verify the degree of protection against diarrhea induced in the newborns. Only those pups born to dams immunized with VP8* did not develop diarrhea after having been orally challenged with the SA11 strain. Pups bo…

DiarrheaRotavirusRecombinant Fusion ProteinsvirusesImmunologyViral Nonstructural ProteinsAntibodies Viralmedicine.disease_causeRotavirus InfectionsMiceCapsidAntigenNeutralization TestsImmunityVirologyRotavirusEscherichia colimedicineAnimalsNeutralizing antibodyAntigens ViralGlutathione TransferaseMice Inbred BALB CbiologyVaccinationImmunization PassiveRotavirus VaccinesRNA-Binding Proteinsvirus diseasesVirologyDiarrheaBreast FeedingMilkAnimals NewbornImmunizationVaccines Subunitbiology.proteinMolecular MedicineCapsid ProteinsFemalemedicine.symptomAntibodyImmunity Maternally-AcquiredBreast feedingViral Immunology
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