NDLI: Human immunodeficiency virus type-1 envelope glycoprotein gp120 induces expression of fusion regulatory protein (FRP)-1/CD98 on CD4+ T cells: a possible regulatory mechanism of HIV-induced syncytium formation

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Human immunodeficiency virus type-1 envelope glycoprotein gp120 induces expression of fusion regulatory protein (FRP)-1/CD98 on CD4+ T cells: a possible regulatory mechanism of HIV-induced syncytium formation

Content Provider	Springer Nature Link
Author	Suga, Shigeru Tsurudome, Masato Ito, Masahiro Ohgimoto, Shinji Tabata, butada Nishio, Machiko Kawa, Mitsuo Komada, Hiroshi Ito, Morihiro Sakurai, Miru Ito, Y.
Copyright Year	1997
Abstract	Syncytium formation is one of major cytopathic effects of human immunodeficiency virus (HIV) infection, and requires the interaction of CD4 molecules on uninfected cells with HIV envelope glyoprotein gp120 expressed on HIV-infected cells. Recent evidence suggests chemokine receptors function as fusion cofactors. We have recently found that fusion regulatory protein (FRP)-1/ CD98 is involved in syncytium formation of HIV gp160-expressing U2ME-7 cells and TALL-1 cells persistently infected with HIV. However, resting lymphocytes were found to express no FRP-1 molecule. In this study, we demonstrated that recombinant gp120 (rpg120) has the ability to induce expression of FRP-1 on peripheral blood mononuclear cells (PBMC). Three-color flow cytometric analysis showed that rgp120-induced FRP-1 was expressed selectively on CD4+ T cells in a dose-dependent manner. FRP-1 expression level was maximum 3 days after addition of rgp120. Anti-CD4 and anti-gp120 antibodies blocked rgp120-induced FRP-1 expression. Co-cultivation of PBMC with HIV-1 gp160-expressing HeLa cells also resulted in the increased expression of FRP-1 on T cells. These results suggest that FRP-1 molecules are induced on CD4+ T cells via CD4-gp120 interaction and may play an important role in regulation of HIV-induced syncytium formation.
Starting Page	237
Ending Page	243
Page Count	7
File Format	PDF
ISSN	03008584
Journal	Medical Microbiology and Immunology
Volume Number	185
Issue Number	4
e-ISSN	14321831
Language	English
Publisher	Springer-Verlag
Publisher Date	1997-04-09
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Immunology and Allergy Immunology Microbiology (medical)

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Human immunodeficiency virus type-1 envelope glycoprotein gp120 induces expression of fusion regulatory protein (FRP)-1/CD98 on CD4+ T cells: a possible regulatory mechanism of HIV-induced syncytium formation

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Human immunodeficiency virus type-1 envelope glycoprotein gp120 induces expression of fusion regulatory protein (FRP)-1/CD98 on CD4+ T cells: a possible regulatory mechanism of HIV-induced syncytium formation