Residual HIV-1 disease in seminal cells of HIV-1-infected men on suppressive HAART: latency without on-going cellular infections

被引:58
作者
Nunnari, G
Otero, M
Dornadula, G
Vanella, M
Zhang, H
Frank, I
Pomerantz, RJ [1 ]
机构
[1] Thomas Jefferson Univ, Jefferson Med Coll, Dorrance H Hamilton Labs, Ctr Human Virol,Div Infect Dis,Dept Med, Philadelphia, PA 19107 USA
[2] Univ Penn, Dept Med, Div Infect Dis, Philadelphia, PA 19104 USA
关键词
HAART; HIV-1; latency; reservoirs; semen;
D O I
10.1097/00002030-200201040-00006
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
Background: HIV-1-infected men on suppressive highly active antiretroviral therapy (HAART) have a reduction of viral replication in vivo, but HIV-1 RNA is still detectable by certain ultrasensitive reverse transcriptase-PCR assays in blood plasma. Replication-competent virus can also be isolated from both peripheral blood mononuclear cells (PBMC) and seminal cells of these patients. Despite HAART, on-going in vivo infection of HIV-1-seropositive patients' PBMC was demonstrated by the detection of episomal HIV-1 moieties, known as HIV-1 two-long terminal repeat (2-LTR) DNA circles. Methods: The present study analyzes whether new cellular infections occur in vivo in seminal cells of HIV-1-infected men on suppressive HAART. PBMC and seminal cells were isolated from a cohort of HIV-1-seropositive men taking suppressive HAART (< 50 copies HIV RNA/ml blood plasma). Viral growth assays were performed in vitro, as well as semi-quantitative PCR to detect HIV-1 2-LTR circular DNA in PBMC and seminal mononuclear cells. Results: Viral growth in vitro was demonstrated in 16 out of 28 (57%) patients' PBMC, and in five patients' seminal cells (18%). Although 18 patients' PBMC were positive for HIV-1 2-LTR DNA circles, importantly, 2-LTR circular DNA was not detected in any semen sample, even when replication-competent HIV-1 virus had been recovered from a patient's seminal cells by viral co-culture assays, Conclusions: The current study suggests that in HIV-1-infected men treated with suppressive HAART, new cellular infections occur in PBMC, but that new infections do not take place in seminal cells in vivo. Thus, these findings suggest that mainly latent HIV-1 occurs in seminal cells of men on suppressive HAART, which may be a compartment-specific mechanism of residual HIV-1 disease. (C) 2002 Lippincott Williams Wilkins.
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页码:39 / 45
页数:7
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