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A human T-cell line resistant to cytopathic effects of the human immunodeficiency virus (HIV).

Abstract：

:Infection of human helper T lymphocytes with the human immunodeficiency virus (HIV) results in a rapid induction of cytopathic effects and cell lysis. We isolated a variant of the human T-lymphoblastoid cell line, CEM, that is fully susceptible to HIV infection but resistant to virally induced cytopathic effects. Exposure of the cells, designated CR-10, to HIV resulted in the expression of viral antigens in 100% of cells within 6-9 days. Virus-infected cells remained fully viable and could be cultivated under standard culture conditions for a desired period of time. Parental CEM cells died within 9-12 days after HIV infection. Proviral DNA could be detected in the HIV-infected CR-10 cells by Southern blot and molecular hybridization 4-5 days after infection; the relative amount of proviral DNA reached maximum at Days 6-10 and remained stable during an 8-month follow-up period. Virus production by HIV-infected CR-10 cells was documented by electron microscopy and detection of reverse transcriptase activity in cell culture supernatants. HIV-infected CR-10 cells exhibited a down modulation of the OKT-3, OKT-4, OKT-4A, OKT-8, and OKT-11 T-cell surface markers, but not of the OKT-9 (transferrin receptor). One of the HIV persistently infected CR-10 cell clones has been kept in continuous culture for over 8 months. During this period, the cells remained fully viable, 100% positive for HIV antigens, and negative for most of the T-cell surface markers tested and continued to produce biologically active HIV. The CR-10 and HIV-infected CR-10 cell lines will be useful in studies on the biology of HIV and in the isolation and large-scale propagation of this virus.

journal_name

Virology

journal_title

Virology

authors

Casareale D,Stevenson M,Sakai K,Volsky DJ

doi

10.1016/0042-6822(87)90434-x

subject

Has Abstract

pub_date

1987-01-01 00:00:00

pages

40-9

issue

1

eissn

0042-6822

issn

1096-0341

journal_volume

156

pub_type

杂志文章

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