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M9550024.TXT
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1995-03-04
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Document 0024
DOCN M9550024
TI Broadly reactive HIV-2 and SIVmac specific antibody-dependent cellular
cytotoxicity in immunized and infected cynomolgus monkeys.
DT 9505
AU von Gegerfelt A; Nilsson C; Putkonen P; Broliden K; Department of
Virology, Karolinska Institute, Stockholm, Sweden.
SO Vaccine. 1994 Oct;12(13):1203-8. Unique Identifier : AIDSLINE
MED/95141682
AB Antibody-dependent cellular cytotoxicity (ADCC) was analysed in groups
of cynomolgus monkeys that had been immunized with either HIV-2 (strains
SBL6669 or SBL-K135) or SIVmac. HIV-2- and SIVmac-infected monkeys were
also studied for ADCC. Sequential serum samples were collected from the
animals, which were followed for 1 to 3 years. Sera from the
HIV-2-immunized monkeys had ADCC against both homologous and
heterologous HIV-2 strains as well as cross-reactivity against
SIVmac-infected target cells. This broadly reactive ADCC response could
be detected within the first weeks after immunization. Homologous ADCC
was also seen in seven of eight SIVmac-immunized monkeys which were all
protected from later challenge with SIVmac or SVsm. ADCC titres
sometimes decreased after a few months if the immunized monkeys were not
boosted whereas most of the HIV-2-and SIVmac-infected monkeys developed
a rapid and persistent ADCC response. The presence of ADCC, like the
presence of neutralization in previous studies, did not predict whether
the immunized monkeys would be protected upon challenge with live virus.
DE Animal Antibodies, Viral *Antibody-Dependent Cell Cytotoxicity AIDS
Vaccines/ADMINISTRATION & DOSAGE Cross Reactions Gene Products,
env/*IMMUNOLOGY HIV Antibodies HIV Infections/IMMUNOLOGY
HIV-2/*IMMUNOLOGY Immunization Immunization, Secondary In Vitro
Macaca fascicularis Retroviridae Proteins, Oncogenic/*IMMUNOLOGY
Simian Acquired Immunodeficiency Syndrome/IMMUNOLOGY Species
Specificity Support, Non-U.S. Gov't Support, U.S. Gov't, Non-P.H.S.
SIV/*IMMUNOLOGY Time Factors Viral Fusion Proteins/*IMMUNOLOGY Viral
Vaccines/ADMINISTRATION & DOSAGE JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).