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1996-02-26
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Document 0426
DOCN M9620426
TI Expression of endogenous HIV-1 crossreactive antigens within normal
human extravillous trophoblast cells.
DT 9602
AU Lyden TW; Johnson PM; Mwenda JM; Rote NS; Department of
Microbiology/Immunology, Wright State University; School of Medicine,
Dayton, Ohio 45435, USA.
SO J Reprod Immunol. 1995 Mar;28(3):233-45. Unique Identifier : AIDSLINE
MED/96070219
AB Expression of intact endogenous retroviruses by normal placental villous
trophoblast and immuno-crossreactivity of villous trophoblast with
anti-retroviral antisera have been documented. The nature and/or
potential function of these particles/proteins has not yet been fully
defined. We previously reported that monoclonal antibodies directed
against HIV-1 envelope and gag proteins react with normal human villous
trophoblast. In this study, we report that extravillous trophoblast
(EVT) from second- and third-trimester tissue are also cross-reactive
with anti-HIV-1 gp120/160 and p17/18 antibodies. We document a
differential expression of such cross-reactive epitopes between
mononuclear EVT and placental bed giant cells. Mononuclear EVT
principally displayed reactivity throughout the cytoplasm with little or
no difference between cells, whereas placental bed giant cells displayed
distinct localization of labeling to limited areas of cytoplasm. This
pattern of reactivity apparently correlates with trophoblast
morphological differentiation and with our earlier observations
concerning villous trophoblast. These data illustrate that
retrovirus-associated epitopes are expressed by trophoblast throughout
the normal human placenta and that this distribution is related to
morphologic differentiation of these cells.
DE Chorionic Villi/CHEMISTRY/*IMMUNOLOGY Cross Reactions Female Human
HIV Antibodies/CHEMISTRY/IMMUNOLOGY HIV Antigens/CHEMISTRY/*IMMUNOLOGY
HIV-1/*IMMUNOLOGY Pregnancy Support, Non-U.S. Gov't
Trophoblast/CHEMISTRY/*IMMUNOLOGY JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).