Effects of Recombinant Soluble CD4 (rCD4) on HIV-1 Infection of Monocyte/Macrophages (original) (raw)
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Department of Medicine, New England Deaconess Hospital, Harvard Medical School
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Boston, Massachusetts
Reprints and correspondence: Dr. Mary A. Harbison, Infectious Disease Section, New England Deaconess Hospital, 185 Pilgrim Rd., Boston, MA 02215.
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Department of Medicine, New England Deaconess Hospital, Harvard Medical School
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Boston, Massachusetts
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Department of Medicine, New England Deaconess Hospital, Harvard Medical School
,
Boston, Massachusetts
Search for other works by this author on:
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Department of Medicine, New England Deaconess Hospital, Harvard Medical School
,
Boston, Massachusetts
Search for other works by this author on:
,
Department of Medicine, New England Deaconess Hospital, Harvard Medical School
,
Boston, Massachusetts
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Department of Medicine, New England Deaconess Hospital, Harvard Medical School
,
Boston, Massachusetts
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Revision received:
09 August 1989
Published:
01 January 1990
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Mary A. Harbison, Jacqueline M. Gillis, Paula Pinkston, Randal A. Byrn, Richard M. Rose, Scott M. Hammer, Effects of Recombinant Soluble CD4 (rCD4) on HIV-1 Infection of Monocyte/Macrophages, The Journal of Infectious Diseases, Volume 161, Issue 1, January 1990, Pages 1–6, https://doi.org/10.1093/infdis/161.1.1
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Abstract
Recombinant soluble CD4 (rCD4) was tested for its ability to block acute human immunodeficiency virus (HIV) infection in the U937 monocytic cell line and in human pulmonary alveolar macrophages (PAM) and for its ability to prevent transfer of virus from chronically infected PAM to target peripheral blood mononuclear leukocytes (PMNL). With an initial virus inoculum of 103–104 TCID50/ml, rCD4 completely prevented acute HIV infection of U937 cells at concentrations ⩾1 µg/ml and provided substantial but incomplete protection at 0.1 µg/ml, With an initial virus inoculum of 102 TCID50/ml, rCD4 completely prevented acute infection of PAM at concentrations ⩾0.1 µg/ml. The transmission of HIV-1 infection to PMNLcocultured with chronically infected PAM was completely inhibited at concentrations ⩾1 µg/ml if cell-to-cell contact was prevented. With direct PAM-PMNL contact, substantial inhibition was obtained at an rCD4 concentration of 10 µg/ml,and higher concentrations (200 µg/mI) could completely block transfer. These results demonstrated that rCD4 can be effective in preventing de novo infection of cells of the monocyte/macrophage lineage, but microenvironments where cell-to-cell contact predominates are likely to pose a formidable challenge to this therapeutic strategy.
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© 1990 by The University of Chicago
Topic:
- myocardial infarction
- hiv
- lung
- cell lines
- leukocytes, mononuclear
- macrophages
- macrophages, alveolar
- malawi
- michigan
- monocytes
- u937 cells
- infections
- viruses
- hiv infections
- transfer technique
- hiv-1 infection
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