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1996-02-27
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Document 0590
DOCN M9630590
TI Simian immunodeficiency virus infection of macaque primary placental
cells.
DT 9603
AU Bui T; Watanabe R; Kennedy B; Unadkat JD; Morton WR; Ho RJ; Department
of Pharmaceutics, University of Washington, Seattle; 98195, USA.
SO AIDS Res Hum Retroviruses. 1995 Aug;11(8):955-61. Unique Identifier :
AIDSLINE MED/96020096
AB We have characterized the ability of a simian immunodeficiency virus,
SIVmne strain E11S, to infect macaque placental trophoblast and Hofbauer
cells. These primary placental cells were permissive to SIVmne
infection, regardless of gestational age. Virus production by the
infected cells was determined as time-dependent viral core antigen p27
production, followed by verification of the proviral gag/LTR DNA
sequences in the infected cells using a polymerase chain reaction assay.
Of more than six placentas tested, SIVmne infection of placental cells
at an early gestational age (i.e., days 55 or 78) produced more than
10-fold the amount of virus core antigen p27 than did placental cells
infected at a late gestational age (i.e., days 135 or 165). In addition,
SIVmne infection of trophoblast cells was inhibited by SIVmac
neutralizing macaque serum but not by normal serum, indicating the
specificity of virus infection. Furthermore, the amount of SIV core
antigen p27 produced by the virus-infected trophoblast and Hofbauer
cells was shown to be dependent on the multiplicity of virus infection.
Collectively, our results indicate that macaque trophoblast and Hofbauer
cells can be infected by SIV and that both gestational age and viral
dose may play a role in the extent of viral infection.
DE Animal Cells, Cultured Female Macaca Placenta/*VIROLOGY Pregnancy
Simian Acquired Immunodeficiency Syndrome/*VIROLOGY Support, U.S.
Gov't, P.H.S. SIV/PHYSIOLOGY/*PATHOGENICITY Viral
Proteins/BIOSYNTHESIS Virus Replication JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).