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M9630352.TXT
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1996-02-27
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Document 0352
DOCN M9630352
TI Antiviral cytotoxic T lymphocytes in vaginal mucosa of simian
immunodeficiency virus-infected rhesus macaques.
DT 9603
AU Lohman BL; Miller CJ; McChesney MB; California Regional Primate Research
Center, School of Veterinary; Medicine, University of California-Davis
95616, USA.
SO J Immunol. 1995 Dec 15;155(12):5855-60. Unique Identifier : AIDSLINE
MED/96094483
AB The mucosal immune system of the female reproductive tract is of central
importance for protection against sexually transmitted diseases,
including HIV; however, this arm of the immune system remains poorly
understood. Antiviral CTL responses never have been documented in the
genital tract and the role of CTL in this anatomic site is unknown. In
this study, CD8+ intraepithelial lymphocytes (IEL) in the vaginas of six
simian immunodeficiency virus (SIV)-infected female rhesus macaques were
identified by immunohistochemistry to be CD2+ and TCR beta-chain+. In
addition, the majority of CD8+ IEL contained TIA-1+ cytoplasmic granules
that are associated with CTL activity. CD8+ T cells were isolated from
the vaginal epithelium and submucosa and amplified by limiting dilution
in the presence of feeder cells. SIV p55gag and/or gp160env-specific
lysis was detected in cultures of vaginal epithelial but not submucosal
CD8+ T lymphocytes. Estimated SIV-specific precursor CTL frequencies
were higher in the vaginal CD8+ IEL population of chronically infected
monkeys than in the same cells from acutely infected monkeys or a naive
control monkey. These results provide the first demonstration that
antiviral CTL are present in the vaginal epithelium, and suggest that a
vaccine may be able to generate anti-HIV CTL in the genital mucosa.
DE Animal Epithelium/IMMUNOLOGY/VIROLOGY Female Gene Products,
gag/IMMUNOLOGY Lymphoid Tissue/IMMUNOLOGY Macaca mulatta Mucous
Membrane/IMMUNOLOGY Receptors, Antigen, T-Cell, alpha-beta/BIOSYNTHESIS
Simian Acquired Immunodeficiency Syndrome/*IMMUNOLOGY Support, Non-U.S.
Gov't Support, U.S. Gov't, P.H.S. SAIDS Vaccines/IMMUNOLOGY
SIV/ISOLATION & PURIF T-Lymphocytes, Cytotoxic/*IMMUNOLOGY
Vagina/*IMMUNOLOGY/VIROLOGY JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).