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Lungu C, Overmars RJ, Grundeken E, Boers PHM, van der Ende ME, Mesplède T, Gruters RA. Genotypic and Phenotypic Characterization of Replication-Competent HIV-2 Isolated from Controllers and Progressors. Viruses 2023; 15:2236. [PMID: 38005913 PMCID: PMC10675771 DOI: 10.3390/v15112236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 11/03/2023] [Accepted: 11/07/2023] [Indexed: 11/26/2023] Open
Abstract
Although some individuals with HIV-2 develop severe immunodeficiency and AIDS-related complications, most may never progress to AIDS. Replication-competent HIV-2 isolated from asymptomatic long-term non-progressors (controllers) have lower replication rates than viruses from individuals who progress to AIDS (progressors). To investigate potential retroviral factors that correlate with disease progression in HIV-2, we sequenced the near full-length genomes of replication-competent viruses previously outgrown from controllers and progressors and used phylogeny to seek genotypic correlates of disease progression. We validated the integrity of all open reading frames and used cell-based assays to study the retroviral transcriptional activity of the long terminal repeats (LTRs) and Tat proteins of HIV-2 from controllers and progressors. Overall, we did not identify genotypic defects that may contribute to HIV-2 non-progression. Tat-induced, LTR-mediated transcription was comparable between viruses from controllers and progressors. Our results were obtained from a small number of participants and should be interpreted accordingly. Overall, they suggest that progression may be determined before or during integration of HIV-2.
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Affiliation(s)
- Cynthia Lungu
- Viroscience Department, Erasmus Medical Center, Wytemaweg 80, 3015 CN Rotterdam, The Netherlands; (C.L.); (R.J.O.); (E.G.); (P.H.M.B.)
| | - Ronald J. Overmars
- Viroscience Department, Erasmus Medical Center, Wytemaweg 80, 3015 CN Rotterdam, The Netherlands; (C.L.); (R.J.O.); (E.G.); (P.H.M.B.)
| | - Esmée Grundeken
- Viroscience Department, Erasmus Medical Center, Wytemaweg 80, 3015 CN Rotterdam, The Netherlands; (C.L.); (R.J.O.); (E.G.); (P.H.M.B.)
| | - Patrick H. M. Boers
- Viroscience Department, Erasmus Medical Center, Wytemaweg 80, 3015 CN Rotterdam, The Netherlands; (C.L.); (R.J.O.); (E.G.); (P.H.M.B.)
| | - Marchina E. van der Ende
- Department of Internal Medicine, Erasmus Medical Center, Wytemaweg 80, 3015 CN Rotterdam, The Netherlands;
| | - Thibault Mesplède
- Viroscience Department, Erasmus Medical Center, Wytemaweg 80, 3015 CN Rotterdam, The Netherlands; (C.L.); (R.J.O.); (E.G.); (P.H.M.B.)
| | - Rob A. Gruters
- Viroscience Department, Erasmus Medical Center, Wytemaweg 80, 3015 CN Rotterdam, The Netherlands; (C.L.); (R.J.O.); (E.G.); (P.H.M.B.)
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Prins HAB, Crespo R, Lungu C, Rao S, Li L, Overmars RJ, Papageorgiou G, Mueller YM, Stoszko M, Hossain T, Kan TW, Rijnders BJA, Bax HI, van Gorp ECM, Nouwen JL, de Vries-Sluijs TEMS, Schurink CAM, de Mendonça Melo M, van Nood E, Colbers A, Burger D, Palstra RJ, van Kampen JJA, van de Vijver DAMC, Mesplède T, Katsikis PD, Gruters RA, Koch BCP, Verbon A, Mahmoudi T, Rokx C. The BAF complex inhibitor pyrimethamine reverses HIV-1 latency in people with HIV-1 on antiretroviral therapy. Sci Adv 2023; 9:eade6675. [PMID: 36921041 PMCID: PMC10017042 DOI: 10.1126/sciadv.ade6675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 02/09/2023] [Indexed: 06/18/2023]
Abstract
Reactivation of the latent HIV-1 reservoir is a first step toward triggering reservoir decay. Here, we investigated the impact of the BAF complex inhibitor pyrimethamine on the reservoir of people living with HIV-1 (PLWH). Twenty-eight PLWH on suppressive antiretroviral therapy were randomized (1:1:1:1 ratio) to receive pyrimethamine, valproic acid, both, or no intervention for 14 days. The primary end point was change in cell-associated unspliced (CA US) HIV-1 RNA at days 0 and 14. We observed a rapid, modest, and significant increase in (CA US) HIV-1 RNA in response to pyrimethamine exposure, which persisted throughout treatment and follow-up. Valproic acid treatment alone did not increase (CA US) HIV-1 RNA or augment the effect of pyrimethamine. Pyrimethamine treatment did not result in a reduction in the size of the inducible reservoir. These data demonstrate that the licensed drug pyrimethamine can be repurposed as a BAF complex inhibitor to reverse HIV-1 latency in vivo in PLWH, substantiating its potential advancement in clinical studies.
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Affiliation(s)
- Henrieke A. B. Prins
- Department of Internal Medicine, Section Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Raquel Crespo
- Department of Biochemistry, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Cynthia Lungu
- Department of Biochemistry, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Shringar Rao
- Department of Biochemistry, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Letao Li
- Department of Pharmacy, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Ronald J. Overmars
- Department of Viroscience, Erasmus University Medical Center, Rotterdam, Netherlands
| | | | - Yvonne M. Mueller
- Department of Immunology, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Mateusz Stoszko
- Department of Biochemistry, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Tanvir Hossain
- Department of Biochemistry, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Tsung Wai Kan
- Department of Biochemistry, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Pathology, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Urology, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Bart J. A. Rijnders
- Department of Internal Medicine, Section Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Hannelore I. Bax
- Department of Internal Medicine, Section Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Eric C. M. van Gorp
- Department of Viroscience, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Jan L. Nouwen
- Department of Internal Medicine, Section Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Theodora E. M. S. de Vries-Sluijs
- Department of Internal Medicine, Section Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Carolina A. M. Schurink
- Department of Internal Medicine, Section Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Mariana de Mendonça Melo
- Department of Internal Medicine, Section Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Els van Nood
- Department of Internal Medicine, Section Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Angela Colbers
- Department of Pharmacy, Radboud Institute for Health Sciences, Radboud University Medical Center Nijmegen, Nijmegen, Netherlands
| | - David Burger
- Department of Pharmacy, Radboud Institute for Health Sciences, Radboud University Medical Center Nijmegen, Nijmegen, Netherlands
| | - Robert-Jan Palstra
- Department of Biochemistry, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Pathology, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Urology, Erasmus University Medical Center, Rotterdam, Netherlands
| | | | | | - Thibault Mesplède
- Department of Viroscience, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Peter D. Katsikis
- Department of Immunology, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Rob A. Gruters
- Department of Viroscience, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Birgit C. P. Koch
- Department of Pharmacy, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Annelies Verbon
- Department of Internal Medicine, Section Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Internal Medicine, University Medical Center, Utrecht, Netherlands
| | - Tokameh Mahmoudi
- Department of Biochemistry, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Pathology, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Urology, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Casper Rokx
- Department of Internal Medicine, Section Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
- Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center, Rotterdam, Netherlands
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Laeremans T, den Roover S, Lungu C, D’haese S, Gruters RA, Allard SD, Aerts JL. Autologous dendritic cell vaccination against HIV-1 induces changes in natural killer cell phenotype and functionality. NPJ Vaccines 2023; 8:29. [PMID: 36864042 PMCID: PMC9980861 DOI: 10.1038/s41541-023-00631-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Accepted: 02/20/2023] [Indexed: 03/04/2023] Open
Abstract
Although natural killer (NK) cells have been studied in connection with dendritic cell (DC)-based vaccination in the field of cancer immunology, their role has barely been addressed in the context of therapeutic vaccination against HIV-1. In this study, we evaluated whether a therapeutic DC-based vaccine consisting of monocyte-derived DCs electroporated with Tat, Rev and Nef encoding mRNA affects NK cell frequency, phenotype and functionality in HIV-1-infected individuals. Although the frequency of total NK cells did not change, we observed a significant increase in cytotoxic NK cells following immunisation. In addition, significant changes in the NK cell phenotype associated with migration and exhaustion were observed together with increased NK cell-mediated killing and (poly)functionality. Our results show that DC-based vaccination has profound effects on NK cells, which highlights the importance of evaluating NK cells in future clinical trials looking at DC-based immunotherapy in the context of HIV-1 infection.
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Affiliation(s)
- Thessa Laeremans
- grid.8767.e0000 0001 2290 8069Neuro-Aging and Viro-Immunotherapy Research Group, Vrije Universiteit Brussel, Brussels, Belgium
| | - Sabine den Roover
- grid.8767.e0000 0001 2290 8069Neuro-Aging and Viro-Immunotherapy Research Group, Vrije Universiteit Brussel, Brussels, Belgium
| | - Cynthia Lungu
- grid.5645.2000000040459992XDepartment of Viroscience, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Sigrid D’haese
- grid.8767.e0000 0001 2290 8069Neuro-Aging and Viro-Immunotherapy Research Group, Vrije Universiteit Brussel, Brussels, Belgium
| | - Rob A. Gruters
- grid.5645.2000000040459992XDepartment of Viroscience, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Sabine D. Allard
- grid.411326.30000 0004 0626 3362Department of Internal Medicine and Infectious Diseases, Universitair Ziekenhuis Brussel and Vrije Universiteit Brussel, Brussels, Belgium
| | - Joeri L. Aerts
- grid.8767.e0000 0001 2290 8069Neuro-Aging and Viro-Immunotherapy Research Group, Vrije Universiteit Brussel, Brussels, Belgium
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van Kampen JJA, Pham HT, Yoo S, Overmars RJ, Lungu C, Mahmud R, Schurink CAM, van Boheemen S, Gruters RA, Fraaij PLA, Burger DM, Voermans JJC, Rokx C, van de Vijver DAMC, Mesplède T. HIV-1 resistance against dolutegravir fluctuates rapidly alongside erratic treatment adherence: a case report. J Glob Antimicrob Resist 2022; 31:323-327. [PMID: 36347497 DOI: 10.1016/j.jgar.2022.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 10/26/2022] [Accepted: 11/02/2022] [Indexed: 11/08/2022] Open
Abstract
OBJECTIVES We report a case of incomplete HIV-1 suppression on a dolutegravir, lamivudine, and abacavir single-tablet regimen with the emergence of the H51Y and G118R integrase resistance mutations. METHODS Integrase sequencing was performed retrospectively by Sanger and next-generation sequencing. Rates of emergence and decline of resistance mutations were calculated using next-generation sequencing data. Dolutegravir plasma concentrations were measured by ultra-performance liquid chromatography-tandem mass spectrometry. The effects of H51Y and G118R on infectivity, fitness, and susceptibility to dolutegravir were quantified using cell-based assays. RESULTS During periods of non-adherence to treatment, mutations were retrospectively documented only by next-generation sequencing. Misdiagnosis by Sanger sequencing was caused by the rapid decline of mutant strains within the retroviral population. This observation was also true for a M184V lamivudine-resistant reverse transcriptase mutation found in association with integrase mutations on single HIV genomes. Resistance rebound upon treatment re-initiation was swift (>8000 copies per day). Next-generation sequencing indicated cumulative adherence to treatment. Compared to WT HIV-1, relative infectivity was 73%, 38%, and 43%; relative fitness was 100%, 35%, and 10% for H51Y, G118R, and H51Y+G118R viruses, respectively. H51Y did not change the susceptibility to dolutegravir, but G188R and H51Y+G118R conferred 7- and 28-fold resistance, respectively. CONCLUSION This case illustrates how poorly-fit drug-resistant viruses wax and wane alongside erratic treatment adherence and are easily misdiagnosed by Sanger sequencing. We recommend next-generation sequencing to improve the clinical management of incomplete virological suppression with dolutegravir.
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Affiliation(s)
| | - Hanh Thi Pham
- Department of Microbiology and Immunology, McGill University, Canada
| | - Sunbin Yoo
- Department of Microbiology and Immunology, McGill University, Canada
| | - Ronald J Overmars
- Viroscience department, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Cynthia Lungu
- Viroscience department, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Rizwan Mahmud
- Viroscience department, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Carolina A M Schurink
- Department of Medical Microbiology and Infectious Diseases, Erasmus Medical Center, Rotterdam, The Netherlands; Department of Internal Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
| | | | - Rob A Gruters
- Viroscience department, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Pieter L A Fraaij
- Viroscience department, Erasmus Medical Center, Rotterdam, The Netherlands; Department of Pediatrics, Subdivision Infectious Diseases and Immunology, Sophia's Children Hospital, Erasmus Medical Center, Rotterdam, The Netherlands
| | - David M Burger
- Department of Pharmacy, Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | | | - Casper Rokx
- Department of Medical Microbiology and Infectious Diseases, Erasmus Medical Center, Rotterdam, The Netherlands; Department of Internal Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
| | | | - Thibault Mesplède
- Viroscience department, Erasmus Medical Center, Rotterdam, The Netherlands.
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Fehér C, Pastor-lbáñez R, Leal L, Plana M, Arnedo M, van den Ham HJ, Andeweg AC, Gruters RA, Díez-Fuertes F, Alcamí J, Aloy P, García F. Association of Transcriptomic Signatures of Inflammatory Response with Viral Control after Dendritic Cell-Based Therapeutic Vaccination in HIV-1 Infected Individuals. Vaccines (Basel) 2021; 9:vaccines9070799. [PMID: 34358215 PMCID: PMC8310264 DOI: 10.3390/vaccines9070799] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 07/05/2021] [Accepted: 07/14/2021] [Indexed: 12/01/2022] Open
Abstract
Systems vaccinology has seldomly been used in therapeutic HIV-1 vaccine research. Our aim was to identify early gene ‘signatures’ that predicted virus load control after analytical therapy interruption (ATI) in participants of a dendritic cell-based HIV-1 vaccine trial (DCV2). mRNA and miRNA were extracted from frozen post-vaccination PBMC samples; gene expression was determined by microarray method. In gene set enrichment analysis, responders showed an up-regulation of 14 gene sets (TNF-alpha/NFkB pathway, inflammatory response, the complement system, Il6 and Il2 JAK-STAT signaling, among others) and a down-regulation of 7 gene sets (such as E2F targets or interferon alpha response). The expression of genes regulated by three (miR-223-3p, miR-1183 and miR-8063) of the 9 differentially expressed miRNAs was significantly down-regulated in responders. The deregulation of certain gene sets related to inflammatory processes seems fundamental for viral control, and certain miRNAs may be important in fine-tuning these processes.
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Affiliation(s)
- Csaba Fehér
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute for Science and Technology, 08028 Barcelona, Spain;
- Infectious Diseases Department, Hospital Clinic, IDIBAPS, University of Barcelona, 08036 Barcelona, Spain; (L.L.); (F.D.-F.); (J.A.); (F.G.)
- Correspondence:
| | - Roque Pastor-lbáñez
- Retrovirology and Viral Immunopathology Laboratory, AIDS Research Group, IDIBAPS, Hospital Clinic, University of Barcelona, 08036 Barcelona, Spain; (R.P.-l.); (M.P.); (M.A.)
| | - Lorna Leal
- Infectious Diseases Department, Hospital Clinic, IDIBAPS, University of Barcelona, 08036 Barcelona, Spain; (L.L.); (F.D.-F.); (J.A.); (F.G.)
- Retrovirology and Viral Immunopathology Laboratory, AIDS Research Group, IDIBAPS, Hospital Clinic, University of Barcelona, 08036 Barcelona, Spain; (R.P.-l.); (M.P.); (M.A.)
| | - Montserrat Plana
- Retrovirology and Viral Immunopathology Laboratory, AIDS Research Group, IDIBAPS, Hospital Clinic, University of Barcelona, 08036 Barcelona, Spain; (R.P.-l.); (M.P.); (M.A.)
| | - Mireia Arnedo
- Retrovirology and Viral Immunopathology Laboratory, AIDS Research Group, IDIBAPS, Hospital Clinic, University of Barcelona, 08036 Barcelona, Spain; (R.P.-l.); (M.P.); (M.A.)
| | - Henk-Jan van den Ham
- Department of Viroscience, Erasmus MC, 3000CA Rotterdam, The Netherlands; (H.-J.v.d.H.); (A.C.A.); (R.A.G.)
| | - Arno C. Andeweg
- Department of Viroscience, Erasmus MC, 3000CA Rotterdam, The Netherlands; (H.-J.v.d.H.); (A.C.A.); (R.A.G.)
| | - Rob A. Gruters
- Department of Viroscience, Erasmus MC, 3000CA Rotterdam, The Netherlands; (H.-J.v.d.H.); (A.C.A.); (R.A.G.)
| | - Francisco Díez-Fuertes
- Infectious Diseases Department, Hospital Clinic, IDIBAPS, University of Barcelona, 08036 Barcelona, Spain; (L.L.); (F.D.-F.); (J.A.); (F.G.)
- National Center for Microbiology, Instituto de Salud Carlos III, 28222 Majadahonda, Spain
| | - José Alcamí
- Infectious Diseases Department, Hospital Clinic, IDIBAPS, University of Barcelona, 08036 Barcelona, Spain; (L.L.); (F.D.-F.); (J.A.); (F.G.)
- National Center for Microbiology, Instituto de Salud Carlos III, 28222 Majadahonda, Spain
| | - Patrick Aloy
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute for Science and Technology, 08028 Barcelona, Spain;
- Institució Catalana de Recerca i Estudis Avançats, 08010 Barcelona, Spain
| | - Felipe García
- Infectious Diseases Department, Hospital Clinic, IDIBAPS, University of Barcelona, 08036 Barcelona, Spain; (L.L.); (F.D.-F.); (J.A.); (F.G.)
- Retrovirology and Viral Immunopathology Laboratory, AIDS Research Group, IDIBAPS, Hospital Clinic, University of Barcelona, 08036 Barcelona, Spain; (R.P.-l.); (M.P.); (M.A.)
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Lungu C, Banga R, Gruters RA, Procopio FA. Inducible HIV-1 Reservoir Quantification: Clinical Relevance, Applications and Advancements of TILDA. Front Microbiol 2021; 12:686690. [PMID: 34211450 PMCID: PMC8239294 DOI: 10.3389/fmicb.2021.686690] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Accepted: 05/21/2021] [Indexed: 01/07/2023] Open
Abstract
The presence of a stable HIV-1 reservoir persisting over time despite effective antiretroviral suppression therapy precludes a cure for HIV-1. Characterizing and quantifying this residual reservoir is considered an essential prerequisite to develop and validate curative strategies. However, a sensitive, reproducible, cost-effective, and easily executable test is still needed. The quantitative viral outgrowth assay is considered the gold standard approach to quantify the reservoir in HIV-1-infected patients on suppressive ART, but it has several limitations. An alternative method to quantify the viral reservoir following the reactivation of latent HIV-1 provirus detects multiply-spliced tat/rev RNA (msRNA) molecules by real-time PCR [tat/rev induced limiting dilution assay (TILDA)]. This article provides a perspective overview of the clinical relevance, various applications, recent advancements of TILDA, and how the assay has contributed to our understanding of the HIV-1 reservoir.
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Affiliation(s)
- Cynthia Lungu
- Department of Viroscience, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Riddhima Banga
- Department of Immunology and Allergy, Lausanne University Hospital, Lausanne, Switzerland
| | - Rob A. Gruters
- Department of Viroscience, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Francesco A. Procopio
- Department of Immunology and Allergy, Lausanne University Hospital, Lausanne, Switzerland,*Correspondence: Francesco A. Procopio,
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Lungu C, Procopio FA, Overmars RJ, Beerkens RJJ, Voermans JJC, Rao S, Prins HAB, Rokx C, Pantaleo G, van de Vijver DAMC, Mahmoudi T, Boucher CAB, Gruters RA, van Kampen JJA. Inter-Laboratory Reproducibility of Inducible HIV-1 Reservoir Quantification by TILDA. Viruses 2020; 12:v12090973. [PMID: 32887284 PMCID: PMC7552071 DOI: 10.3390/v12090973] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 08/29/2020] [Accepted: 08/31/2020] [Indexed: 12/16/2022] Open
Abstract
Substantial efforts to eliminate or reduce latent HIV-1 reservoirs are underway in clinical trials and have created a critical demand for sensitive, accurate, and reproducible tools to evaluate the efficacy of these strategies. Alternative reservoir quantification assays have been developed to circumvent limitations of the quantitative viral outgrowth assay. One such assay is tat/rev induced limiting dilution assay (TILDA), which measures the frequency of CD4+ T cells harboring inducible latent HIV-1 provirus. We modified pre-amplification reagents and conditions (TILDA v2.0) to improve assay execution and first internally validated assay performance using CD4+ T cells obtained from cART-suppressed HIV-1-infected individuals. Detection of tat/rev multiply spliced RNA was not altered by modifying pre-amplification conditions, confirming the robustness of the assay, and supporting the technique’s amenability to limited modifications to ensure better implementation for routine use in clinical studies of latent HIV-1 reservoirs. Furthermore, we cross-validated results of TILDA v2.0 and the original assay performed in two separate laboratories using samples from 15 HIV-1-infected individuals. TILDA and TILDA v2.0 showed a strong correlation (Lin’s Concordance Correlation Coefficient = 0.86). The low inter-laboratory variability between TILDAs performed at different institutes further supports use of TILDA for reservoir quantitation in multi-center interventional HIV-1 Cure trials.
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Affiliation(s)
- Cynthia Lungu
- Department of Viroscience, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands; (R.J.O.); (R.J.J.B.); (J.J.C.V.); (D.A.M.C.v.d.V.); (C.A.B.B.); (R.A.G.); (J.J.A.v.K.)
- Correspondence:
| | - Francesco A. Procopio
- Service of Immunology and Allergy, Lausanne University Hospital, University of Lausanne, 1011 Lausanne, Switzerland; (F.A.P.); (G.P.)
| | - Ronald J. Overmars
- Department of Viroscience, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands; (R.J.O.); (R.J.J.B.); (J.J.C.V.); (D.A.M.C.v.d.V.); (C.A.B.B.); (R.A.G.); (J.J.A.v.K.)
| | - Rob J. J. Beerkens
- Department of Viroscience, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands; (R.J.O.); (R.J.J.B.); (J.J.C.V.); (D.A.M.C.v.d.V.); (C.A.B.B.); (R.A.G.); (J.J.A.v.K.)
| | - Jolanda J. C. Voermans
- Department of Viroscience, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands; (R.J.O.); (R.J.J.B.); (J.J.C.V.); (D.A.M.C.v.d.V.); (C.A.B.B.); (R.A.G.); (J.J.A.v.K.)
| | - Shringar Rao
- Department of Biochemistry, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands; (S.R.); (T.M.)
| | - Henrieke A. B. Prins
- Department of Internal Medicine, Section of Infectious Diseases, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands; (H.A.B.P.); (C.R.)
| | - Casper Rokx
- Department of Internal Medicine, Section of Infectious Diseases, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands; (H.A.B.P.); (C.R.)
| | - Giuseppe Pantaleo
- Service of Immunology and Allergy, Lausanne University Hospital, University of Lausanne, 1011 Lausanne, Switzerland; (F.A.P.); (G.P.)
| | - David A. M. C. van de Vijver
- Department of Viroscience, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands; (R.J.O.); (R.J.J.B.); (J.J.C.V.); (D.A.M.C.v.d.V.); (C.A.B.B.); (R.A.G.); (J.J.A.v.K.)
| | - Tokameh Mahmoudi
- Department of Biochemistry, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands; (S.R.); (T.M.)
| | - Charles A. B. Boucher
- Department of Viroscience, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands; (R.J.O.); (R.J.J.B.); (J.J.C.V.); (D.A.M.C.v.d.V.); (C.A.B.B.); (R.A.G.); (J.J.A.v.K.)
| | - Rob A. Gruters
- Department of Viroscience, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands; (R.J.O.); (R.J.J.B.); (J.J.C.V.); (D.A.M.C.v.d.V.); (C.A.B.B.); (R.A.G.); (J.J.A.v.K.)
| | - Jeroen J. A. van Kampen
- Department of Viroscience, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands; (R.J.O.); (R.J.J.B.); (J.J.C.V.); (D.A.M.C.v.d.V.); (C.A.B.B.); (R.A.G.); (J.J.A.v.K.)
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Jong WD, Leal L, Buyze J, Pannus P, Guardo A, Salgado M, Mothe B, Molto J, Moron-Lopez S, Gálvez C, Florence E, Vanham G, Gorp EV, Brander C, Allard S, Thielemans K, Martinez-Picado J, Plana M, García F, Gruters RA. Therapeutic Vaccine in Chronically HIV-1-Infected Patients: A Randomized, Double-Blind, Placebo-Controlled Phase IIa Trial with HTI-TriMix. Vaccines (Basel) 2019; 7:E209. [PMID: 31817794 PMCID: PMC6963294 DOI: 10.3390/vaccines7040209] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 11/27/2019] [Accepted: 12/02/2019] [Indexed: 12/15/2022] Open
Abstract
Therapeutic vaccinations aim to re-educate human immunodeficiency virus (HIV)-1-specific immune responses to achieve durable control of HIV-1 replication in virally suppressed infected individuals after antiretroviral therapy (ART) is interrupted. In a double blinded, placebo-controlled phase IIa multicenter study, we investigated the safety and immunogenicity of intranodal administration of the HIVACAT T cell Immunogen (HTI)-TriMix vaccine. It consists of naked mRNA based on cytotoxic T lymphocyte (CTL) targets of subdominant and conserved HIV-1 regions (HTI), in combination with mRNAs encoding constitutively active TLR4, the ligand for CD40 and CD70 as adjuvants (TriMix). We recruited HIV-1-infected individuals under stable ART. Study-arms HTI-TriMix, TriMix or Water for Injection were assigned in an 8:3:3 ratio. Participants received three vaccinations at weeks 0, 2, and 4 in an inguinal lymph node. Two weeks after the last vaccination, immunogenicity was evaluated using ELISpot assay. ART was interrupted at week 6 to study the effect of the vaccine on viral rebound. The vaccine was considered safe and well tolerated. Eighteen percent (n = 37) of the AEs were considered definitely related to the study product (grade 1 or 2). Three SAEs occurred: two were unrelated to the study product, and one was possibly related to ART interruption (ATI). ELISpot assays to detect T cell responses using peptides covering the HTI sequence showed no significant differences in immunogenicity between groups. There were no significant differences in viral load rebound dynamics after ATI between groups. The vaccine was safe and well tolerated. We were not able to demonstrate immunogenic effects of the vaccine.
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Affiliation(s)
- Wesley de Jong
- Department of Viroscience, Erasmus MC, 3015 Rotterdam, The Netherlands
| | - Lorna Leal
- Infectious Diseases Department, Hospital Clínic-HIVACAT, University of Barcelona, 08036 Barcelona, Spain
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS)-HIVACAT, 08036 Barcelona, Spain
| | - Jozefien Buyze
- Clinical trials unit, Clinical Sciences Department, Institute of Tropical Medicine of Antwerp, 2000 Antwerp, Belgium
| | - Pieter Pannus
- Virology Unit, Biomedical Sciences Department, Institute of Tropical Medicine of Antwerp, 2000 Antwerp, Belgium
| | - Alberto Guardo
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS)-HIVACAT, 08036 Barcelona, Spain
| | - Maria Salgado
- IrsiCaixa AIDS Research Institute- HIVACAT, Hospital Germans Trias i Pujol, 08916 Badalona, Spain
| | - Beatriz Mothe
- IrsiCaixa AIDS Research Institute- HIVACAT, Hospital Germans Trias i Pujol, 08916 Badalona, Spain
- Fundació Lluita contra la Sida, Infectious Diseases Department, Hospital Germans Trias i Pujol, 08916 Badalona, Spain
- University of Vic - Central University of Catalonia (UVic-UCC), 085000 Vic, Spain
| | - Jose Molto
- Fundació Lluita contra la Sida, Infectious Diseases Department, Hospital Germans Trias i Pujol, 08916 Badalona, Spain
| | - Sara Moron-Lopez
- IrsiCaixa AIDS Research Institute- HIVACAT, Hospital Germans Trias i Pujol, 08916 Badalona, Spain
| | - Cristina Gálvez
- IrsiCaixa AIDS Research Institute- HIVACAT, Hospital Germans Trias i Pujol, 08916 Badalona, Spain
| | - Eric Florence
- Virology Unit, Biomedical Sciences Department, Institute of Tropical Medicine of Antwerp, 2000 Antwerp, Belgium
| | - Guido Vanham
- Virology Unit, Biomedical Sciences Department, Institute of Tropical Medicine of Antwerp, 2000 Antwerp, Belgium
| | - Eric van Gorp
- Department of Viroscience, Erasmus MC, 3015 Rotterdam, The Netherlands
- Department of Infectious Diseases, Erasmus MC, 3015 Rotterdam, The Netherlands
| | - Christian Brander
- IrsiCaixa AIDS Research Institute- HIVACAT, Hospital Germans Trias i Pujol, 08916 Badalona, Spain
- University of Vic - Central University of Catalonia (UVic-UCC), 085000 Vic, Spain
- Catalan Institution for Research and Advanced Studies (ICREA), 08010 Barcelona, Spain
| | - Sabine Allard
- Department of Internal Medicine and Infectious Diseases, Universitair Ziekenhuis Brussel, 1090 Brussels, Belgium
| | - Kris Thielemans
- eTheRNA, BVBA (eTheRNA), 2845 Niel, Belgium
- Laboratory of Molecular and Cellular Therapy, Vrije Universiteit Brussel (VUB), 1090 Brussels, Belgium
| | - Javier Martinez-Picado
- IrsiCaixa AIDS Research Institute- HIVACAT, Hospital Germans Trias i Pujol, 08916 Badalona, Spain
- University of Vic - Central University of Catalonia (UVic-UCC), 085000 Vic, Spain
- eTheRNA, BVBA (eTheRNA), 2845 Niel, Belgium
| | - Montserrat Plana
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS)-HIVACAT, 08036 Barcelona, Spain
| | - Felipe García
- Infectious Diseases Department, Hospital Clínic-HIVACAT, University of Barcelona, 08036 Barcelona, Spain
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS)-HIVACAT, 08036 Barcelona, Spain
| | - Rob A Gruters
- Department of Viroscience, Erasmus MC, 3015 Rotterdam, The Netherlands
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Wijting IEA, Lungu C, Rijnders BJA, van der Ende ME, Pham HT, Mesplede T, Pas SD, Voermans JJC, Schuurman R, van de Vijver DAMC, Boers PHM, Gruters RA, Boucher CAB, van Kampen JJA. HIV-1 Resistance Dynamics in Patients With Virologic Failure to Dolutegravir Maintenance Monotherapy. J Infect Dis 2019; 218:688-697. [PMID: 29617822 DOI: 10.1093/infdis/jiy176] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Accepted: 03/18/2018] [Indexed: 11/14/2022] Open
Abstract
Background A high genetic barrier to resistance to the integrase strand transfer inhibitor (INSTI) dolutegravir has been reported in vitro and in vivo. We describe the dynamics of INSTI resistance-associated mutations (INSTI-RAMs) and mutations in the 3'-polypurine tract (3'-PPT) in relation to virologic failure (VF) observed in the randomized Dolutegravir as Maintenance Monotherapy for HIV-1 study (DOMONO, NCT02401828). Methods From 10 patients with VF, plasma samples were collected before the start of cART and during VF, and were used to generate Sanger sequences of integrase, the 5' terminal bases of the 3' long terminal repeat (LTR), and the 3'-PPT. Results Median human immunodeficiency virus RNA load at VF was 3490 copies/mL (interquartile range 1440-4990 copies/mL). INSTI-RAMs (S230R, R263K, N155H, and E92Q+N155H) were detected in 4 patients, no INSTI-RAMs were detected in 4 patients, and sequencing of the integrase gene was unsuccessful in 2 patients. The time to VF ranged from 4 weeks to 72 weeks. In 1 patient, mutations developed in the highly conserved 3'-PPT. No changes in the terminal bases of the 3'-LTR were observed. Conclusions The genetic barrier to resistance is too low to justify dolutegravir maintenance monotherapy because single INSTI-RAMs are sufficient to cause VF. The large variation in time to VF suggests that stochastic reactivation of a preexisting provirus containing a single INSTI-RAM is the mechanism for failure. Changes in the 3'-PPT point to a new dolutegravir resistance mechanism in vivo. Clinical Trials Registration NCT02401828.
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Affiliation(s)
- Ingeborg E A Wijting
- Department of Internal Medicine and Infectious Diseases, Erasmus MC, Rotterdam, the Netherlands
| | - Cynthia Lungu
- Department of Viroscience, Erasmus MC, Rotterdam, the Netherlands
| | - Bart J A Rijnders
- Department of Internal Medicine and Infectious Diseases, Erasmus MC, Rotterdam, the Netherlands
| | - Marchina E van der Ende
- Department of Internal Medicine and Infectious Diseases, Erasmus MC, Rotterdam, the Netherlands
| | - Hanh T Pham
- McGill University AIDS Centre, Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Canada.,Department of Microbiology and Immunology, Faculty of Medicine, McGill University, Montreal, Canada
| | - Thibault Mesplede
- McGill University AIDS Centre, Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Canada.,Department of Microbiology and Immunology, Faculty of Medicine, McGill University, Montreal, Canada
| | - Suzan D Pas
- Department of Viroscience, Erasmus MC, Rotterdam, the Netherlands
| | | | - Rob Schuurman
- Division of Virology, Department of Medical Microbiology, University Medical Center Utrecht, Utrecht, the Netherlands
| | | | | | - Rob A Gruters
- Department of Viroscience, Erasmus MC, Rotterdam, the Netherlands
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Wijting IEA, Lungu C, Rijnders BJA, van der Ende ME, Pham HT, Mesplede T, Pas SD, Voermans JJC, Schuurman R, van de Vijver DAMC, Boers PHM, Gruters RA, Boucher CAB, van Kampen JJA. Reply to Darcis and Berkhout. J Infect Dis 2018; 218:2020-2021. [PMID: 30085047 DOI: 10.1093/infdis/jiy475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Ingeborg E A Wijting
- Department of Internal Medicine-Infectious Diseases, Erasmus MC, Rotterdam, The Netherlands
| | - Cynthia Lungu
- Department of Viroscience, Erasmus MC, Rotterdam, The Netherlands
| | - Bart J A Rijnders
- Department of Internal Medicine-Infectious Diseases, Erasmus MC, Rotterdam, The Netherlands
| | | | - Hanh T Pham
- McGill University AIDS Centre, Lady Davis Institute for Medical Research, Jewish General Hospital, Québec, Canada
- Department of Microbiology and Immunology, Faculty of Medicine, McGill University, Montréal, Québec, Canada
| | - Thibault Mesplede
- McGill University AIDS Centre, Lady Davis Institute for Medical Research, Jewish General Hospital, Québec, Canada
- Department of Microbiology and Immunology, Faculty of Medicine, McGill University, Montréal, Québec, Canada
| | - Suzan D Pas
- Department of Viroscience, Erasmus MC, Rotterdam, The Netherlands
| | | | - Rob Schuurman
- Virology, Department of Medical Microbiology, University Medical Center Utrecht, The Netherlands
| | | | | | - Rob A Gruters
- Department of Viroscience, Erasmus MC, Rotterdam, The Netherlands
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Lungu C, Boers PHM, Schapendonk CME, Smits SL, van de Vijver DAMC, Gruters RA. A15 HIV-1 whole-genome NGS analysis to characterize virus evolution following dendritic cell immunotherapy and analytical treatment interruption. Virus Evol 2018. [PMCID: PMC5905523 DOI: 10.1093/ve/vey010.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- C Lungu
- Department of Viroscience, Erasmus MC, Rotterdam, The Netherlands
| | - P H M Boers
- Department of Viroscience, Erasmus MC, Rotterdam, The Netherlands
| | | | - S L Smits
- Department of Viroscience, Erasmus MC, Rotterdam, The Netherlands
| | | | - R A Gruters
- Department of Viroscience, Erasmus MC, Rotterdam, The Netherlands
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de Goede AL, Andeweg AC, van den Ham HJ, Bijl MA, Zaaraoui-Boutahar F, van IJcken WFJ, Wilgenhof S, Aerts JL, Gruters RA, Osterhaus ADME. DC immunotherapy in HIV-1 infection induces a major blood transcriptome shift. Vaccine 2015; 33:2922-9. [PMID: 25913415 DOI: 10.1016/j.vaccine.2015.04.047] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Revised: 02/06/2015] [Accepted: 04/14/2015] [Indexed: 12/24/2022]
Abstract
OBJECTIVE This study aimed to evaluate the effect of dendritic cell (DC) vaccination against HIV-1 on host gene expression profiles. DESIGN Longitudinal PBMC samples were collected from participants of the DC-TRN trial for immunotherapy against HIV. Microarray-assisted gene expression profiling was performed to evaluate the effects of vaccination and subsequent interruption of antiretroviral therapy on host genome expression. Data from the DC-TRN trial were compared with results from other vaccination trials. METHODS We used Affymetrix GeneChips for microarray gene expression analysis. Data were analyzed by principal component analysis and differential gene expression was assessed using linear modeling. Gene ontology enrichment and gene set analysis were used to characterize differentially expressed genes. Transcriptome analysis included comparison with PBMCs obtained from DC-vaccinated melanoma patients and of healthy individuals who received seasonal influenza vaccination. RESULTS DC-TRN immunotherapy in HIV-infected individuals resulted in a major shift in the transcriptome. Longitudinal analysis demonstrated that changes in the transcriptome sustained also during interruption of antiretroviral therapy. After DC-vaccination, the transcriptome was enriched for cellular immunity associated genes that were also induced in healthy adults who received live attenuated influenza virus vaccination. These beneficial responses were accompanied by detrimental signals of general immune activation. CONCLUSIONS The DC-TRN induced changes in the transcriptome were profound, lasting, and consisted of both protective signals and signatures of inflammation and immune exhaustion, with a net result of decreased viral load, without clinical benefit. Thus transcriptome analysis provides useful information, dissecting both positive and negative effects, for the evaluation of safety and efficacy of immunotherapeutic strategies.
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Affiliation(s)
- Anna L de Goede
- Department of Viroscience, Erasmus Medical Center, PO Box 2040, 3000 CA Rotterdam, The Netherlands; Department of Hospital Pharmacy, Erasmus Medical Center, PO Box 2040, 3000 CA Rotterdam, The Netherlands.
| | - Arno C Andeweg
- Department of Viroscience, Erasmus Medical Center, PO Box 2040, 3000 CA Rotterdam, The Netherlands.
| | - Henk-Jan van den Ham
- Department of Viroscience, Erasmus Medical Center, PO Box 2040, 3000 CA Rotterdam, The Netherlands.
| | - Maarten A Bijl
- Department of Viroscience, Erasmus Medical Center, PO Box 2040, 3000 CA Rotterdam, The Netherlands.
| | - Fatiha Zaaraoui-Boutahar
- Department of Viroscience, Erasmus Medical Center, PO Box 2040, 3000 CA Rotterdam, The Netherlands.
| | - Wilfred F J van IJcken
- Erasmus Center for Biomics, Erasmus Medical Center, PO Box 2040, 3000 CA Rotterdam, The Netherlands.
| | - Sofie Wilgenhof
- Department of Medical Oncology, Vrije Universiteit Brussel, Laarbeeklaan 103, B-1090 Brussels, Belgium; Laboratory of Molecular and Cellular Therapy, Department of Physiology and Immunology, Medical School of the Vrije Universiteit Brussel, Laarbeeklaan 103, B-1090 Brussels, Belgium.
| | - Joeri L Aerts
- Laboratory of Molecular and Cellular Therapy, Department of Physiology and Immunology, Medical School of the Vrije Universiteit Brussel, Laarbeeklaan 103, B-1090 Brussels, Belgium.
| | - Rob A Gruters
- Department of Viroscience, Erasmus Medical Center, PO Box 2040, 3000 CA Rotterdam, The Netherlands.
| | - Albert D M E Osterhaus
- Department of Viroscience, Erasmus Medical Center, PO Box 2040, 3000 CA Rotterdam, The Netherlands.
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van den Dries LWJ, Gruters RA, Hövels-van der Borden SBC, Kruip MJHA, de Maat MPM, van Gorp ECM, van der Ende ME. von Willebrand Factor is elevated in HIV patients with a history of thrombosis. Front Microbiol 2015; 6:180. [PMID: 25814984 PMCID: PMC4356086 DOI: 10.3389/fmicb.2015.00180] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 02/19/2015] [Indexed: 11/21/2022] Open
Abstract
Background: Arterial and venous thrombotic events are more prevalent in HIV infected individuals compared to the general population, even in the era of combination antiretroviral therapy. Although the mechanism is not fully understood, recent evidence suggests a role for chronic immune activation. Methods: We reviewed the Dutch National HIV registry database for HIV infected patients in Rotterdam with a history of arterial or venous thrombosis and calculated the incidence. We collected samples from patients with and without thrombosis and compared plasma levels of lipopolysaccharide (LPS), LPS binding protein (LBP), soluble CD14 (sCD14), and von Willebrand Factor antigen level (vWF). Results: During a 10-year period, a total of 60 documented events in 14,026 person years of observation (PYO) occurred, resulting in an incidence rate of 2.50, 2.21, and 4.28 for arterial, venous and combined thrombotic events per 1000 PYO, respectively. The vWF was elevated in the majority of study subjects (mean 2.36 SD ± 0.88 IU/ml); we found a significant difference when comparing venous cases to controls (mean 2.68 SD ± 0.82 IU/ml vs. 2.20 SD ± 0.77 IU/ml; p = 0.024). This difference remained significant for recurrent events (mean 2.78 SD ± 0.75; p = 0.043). sCD14 was positively correlated with LPS (r = 0.255; p = 0.003). Conclusion: The incidence of venous thrombosis was two-fold higher in HIV infected patients compared to age-adjusted data from general population cohort studies. We couldn't find a clear association between immune activation markers to either arterial or venous thrombotic events. We observed a marked increase in vWF levels as well as a correlation of vWF to first and recurrent venous thrombo-embolic events. These findings suggest that HIV infection is an independent risk factor for coagulation abnormalities and could contribute to the observed high incidence in venous thrombosis. This could be a reason to prolong anti-thrombotic treatment in HIV patients with a history of thrombosis.
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Affiliation(s)
| | - Rob A Gruters
- Department of Viroscience, Erasmus MC, University Medical Center Rotterdam, Netherlands
| | | | - Marieke J H A Kruip
- Division of Hematology, Department of Internal Medicine, Erasmus MC, University Medical Center Rotterdam, Netherlands
| | - Moniek P M de Maat
- Division of Hematology, Department of Internal Medicine, Erasmus MC, University Medical Center Rotterdam, Netherlands
| | - Eric C M van Gorp
- Department of Viroscience, Erasmus MC, University Medical Center Rotterdam, Netherlands ; Division of Infectious Diseases, Department of Internal Medicine, Erasmus MC, University Medical Center Rotterdam, Netherlands
| | - Marchina E van der Ende
- Division of Infectious Diseases, Department of Internal Medicine, Erasmus MC, University Medical Center Rotterdam, Netherlands
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de Goede AL, Vulto AG, Osterhaus ADME, Gruters RA. Understanding HIV infection for the design of a therapeutic vaccine. Part II: Vaccination strategies for HIV. Ann Pharm Fr 2014; 73:169-79. [PMID: 25528627 DOI: 10.1016/j.pharma.2014.11.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Accepted: 11/07/2014] [Indexed: 02/07/2023]
Abstract
HIV infection leads to a gradual loss CD4(+) T lymphocytes comprising immune competence and progression to AIDS. Effective treatment with combined antiretroviral drugs (cART) decreases viral load below detectable levels but is not able to eliminate the virus from the body. The success of cART is frustrated by the requirement of expensive lifelong adherence, accumulating drug toxicities and chronic immune activation resulting in increased risk of several non-AIDS disorders, even when viral replication is suppressed. Therefore, there is a strong need for therapeutic strategies as an alternative to cART. Immunotherapy, or therapeutic vaccination, aims to increase existing immune responses against HIV or induce de novo immune responses. These immune responses should provide a functional cure by controlling viral replication and preventing disease progression in the absence of cART. The key difficulty in the development of an HIV vaccine is our ignorance of the immune responses that control of viral replication, and thus how these responses can be elicited and how they can be monitored. Part one of this review provides an extensive overview of the (patho-) physiology of HIV infection. It describes the structure and replication cycle of HIV, the epidemiology and pathogenesis of HIV infection and the innate and adaptive immune responses against HIV. Part two of this review discusses therapeutic options for HIV. Prevention modalities and antiretroviral therapy are briefly touched upon, after which an extensive overview on vaccination strategies for HIV is provided, including the choice of immunogens and delivery strategies.
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Affiliation(s)
- A L de Goede
- Department of Viroscience, Erasmus MC, 's-Gravendijkwal 230, PO box 2040, 3000 CA Rotterdam, The Netherlands; Department of Hospital Pharmacy, Erasmus MC, 's-Gravendijkwal 230, PO box 2040, 3000 CA Rotterdam, The Netherlands.
| | - A G Vulto
- Department of Hospital Pharmacy, Erasmus MC, 's-Gravendijkwal 230, PO box 2040, 3000 CA Rotterdam, The Netherlands
| | - A D M E Osterhaus
- Department of Viroscience, Erasmus MC, 's-Gravendijkwal 230, PO box 2040, 3000 CA Rotterdam, The Netherlands
| | - R A Gruters
- Department of Viroscience, Erasmus MC, 's-Gravendijkwal 230, PO box 2040, 3000 CA Rotterdam, The Netherlands
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15
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de Goede AL, Vulto AG, Osterhaus ADME, Gruters RA. Understanding HIV infection for the design of a therapeutic vaccine. Part I: Epidemiology and pathogenesis of HIV infection. Ann Pharm Fr 2014; 73:87-99. [PMID: 25496723 DOI: 10.1016/j.pharma.2014.11.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Revised: 11/01/2014] [Accepted: 11/07/2014] [Indexed: 02/07/2023]
Abstract
HIV infection leads to a gradual loss CD4+ T lymphocytes comprising immune competence and progression to AIDS. Effective treatment with combined antiretroviral drugs (cART) decreases viral load below detectable levels but is not able to eliminate the virus from the body. The success of cART is frustrated by the requirement of expensive life-long adherence, accumulating drug toxicities and chronic immune activation resulting in increased risk of several non-AIDS disorders, even when viral replication is suppressed. Therefore there is a strong need for therapeutic strategies as an alternative to cART. Immunotherapy, or therapeutic vaccination, aims to increase existing immune responses against HIV or induce de novo immune responses. These immune responses should provide a functional cure by controlling viral replication and preventing disease progression in the absence of cART. The key difficulty in the development of an HIV vaccine is our ignorance of the immune responses that control of viral replication, and thus how these responses can be elicited and how they can be monitored. Part one of this review provides an extensive overview of the (patho-) physiology of HIV infection. It describes the structure and replication cycle of HIV, the epidemiology and pathogenesis of HIV infection and the innate and adaptive immune responses against HIV. Part two of this review discusses therapeutic options for HIV. Prevention modalities and antiretroviral therapy are briefly touched upon, after which an extensive overview on vaccination strategies for HIV is provided, including the choice of immunogens and delivery strategies.
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Affiliation(s)
- A L de Goede
- Department of Viroscience, Erasmus MC 's-Gravendijkwal 230, 2040, 3000 CA Rotterdam, The Netherlands; Department of Hospital Pharmacy, Erasmus MC 's-Gravendijkwal 230, 2040, 3000 CA Rotterdam, The Netherlands.
| | - A G Vulto
- Department of Hospital Pharmacy, Erasmus MC 's-Gravendijkwal 230, 2040, 3000 CA Rotterdam, The Netherlands
| | - A D M E Osterhaus
- Department of Viroscience, Erasmus MC 's-Gravendijkwal 230, 2040, 3000 CA Rotterdam, The Netherlands
| | - R A Gruters
- Department of Viroscience, Erasmus MC 's-Gravendijkwal 230, 2040, 3000 CA Rotterdam, The Netherlands
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Yu H, Usmani SM, Borch A, Krämer J, Stürzel CM, Khalid M, Li X, Krnavek D, van der Ende ME, Osterhaus AD, Gruters RA, Kirchhoff F. The efficiency of Vpx-mediated SAMHD1 antagonism does not correlate with the potency of viral control in HIV-2-infected individuals. Retrovirology 2013; 10:27. [PMID: 23497283 PMCID: PMC3599662 DOI: 10.1186/1742-4690-10-27] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2012] [Accepted: 02/22/2013] [Indexed: 11/30/2022] Open
Affiliation(s)
- Hangxing Yu
- Institute of Molecular Virology, Ulm University Medical Center, Ulm 89081, Germany
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Coulier L, Gerritsen H, van Kampen JJA, Reedijk ML, Luider TM, Osterhaus ADME, Gruters RA, Brüll L. Comprehensive analysis of the intracellular metabolism of antiretroviral nucleosides and nucleotides using liquid chromatography-tandem mass spectrometry and method improvement by using ultra performance liquid chromatography. J Chromatogr B Analyt Technol Biomed Life Sci 2011; 879:2772-82. [PMID: 21862423 DOI: 10.1016/j.jchromb.2011.07.045] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2011] [Revised: 07/26/2011] [Accepted: 07/27/2011] [Indexed: 11/27/2022]
Abstract
Nucleoside reverse transcriptase inhibitors (NRTIs) are a key class of drugs for the treatment of HIV infection. NRTIs are intracellularly phosphorylated to their active triphosphate metabolites and compete with endogenous deoxynucleotides (dNTP) for substrate binding. It is therefore important to analyze the intracellular concentrations of these compounds to understand drug efficacy and toxicity. To that purpose an analytical platform was developed that is capable of analyzing 8 NRTIs, 12 phosphorylated NRTIs and 4 dNTPs in small numbers of peripheral blood mononuclear cells, i.e. 1 × 10(6) cells. The platform consists of two liquid chromatography-tandem mass spectrometry (LC-MS/MS) methods: a reversed-phase method for NRTIs using positive electrospray ionization (ESI) and an ion-pair LC-MS/MS method for the phosphorylated compounds using negative ESI. The methods use the same LC-MS system and column and changing from one method to the other only includes changing the mobile phase. The methods were partially validated, focussing on sensitivity, accuracy and precision. Successful transfer of the methods to ultra performance liquid chromatography (UPLC) led to a significant improvement of speed for the analysis of NRTIs and sensitivity for both NRTIs and phosphorylated NRTIs. The latter was demonstrated by the improved separation by UHPLC of dGTP vs. AZT-TP and ATP which made direct analysis of dGTP possible using the optimal MS/MS transition thereby significantly improving the detection limit of dGTP. Typically LLOQs observed for both the NRTIs and phosphorylated NRTIs were 1 nM, while the mean accuracy varied between 82 and 120% and inter- and intra-assay precision was generally <20%.
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Affiliation(s)
- Leon Coulier
- TNO, Utrechtseweg 48, 3700 AJ Zeist, The Netherlands.
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Hooff GP, Meesters RJW, van Kampen JJA, van Huizen NA, Koch B, Al Hadithy AFY, van Gelder T, Osterhaus ADME, Gruters RA, Luider TM. Dried blood spot UHPLC-MS/MS analysis of oseltamivir and oseltamivircarboxylate--a validated assay for the clinic. Anal Bioanal Chem 2011; 400:3473-9. [PMID: 21537911 PMCID: PMC3119796 DOI: 10.1007/s00216-011-5050-z] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2011] [Revised: 04/18/2011] [Accepted: 04/20/2011] [Indexed: 12/01/2022]
Abstract
The neuraminidase inhibitor oseltamivir (Tamiflu®) is currently the first-line therapy for patients with influenza virus infection. Common analysis of the prodrug and its active metabolite oseltamivircarboxylate is determined via extraction from plasma. Compared with these assays, dried blood spot (DBS) analysis provides several advantages, including a minimum sample volume required for the measurement of drugs in whole blood. Samples can easily be obtained via a simple, non-invasive finger or heel prick. Mainly, these characteristics make DBS an ideal tool for pediatrics and to measure multiple time points such as those needed in therapeutic drug monitoring or pharmacokinetic studies. Additionally, DBS sample preparation, stability, and storage are usually most convenient. In the present work, we developed and fully validated a DBS assay for the simultaneous determination of oseltamivir and oseltamivircarboxylate concentrations in human whole blood. We demonstrate the simplicity of DBS sample preparation, and a fast, accurate and reproducible analysis using ultra high-performance liquid chromatography coupled to a triple quadrupole mass spectrometer. A thorough validation on the basis of the most recent FDA guidelines for bioanalytical method validation showed that the method is selective, precise, and accurate (≤15% RSD), and sensitive over the relevant clinical range of 5–1,500 ng/mL for oseltamivir and 20–1,500 ng/mL for the oseltamivircarboxylate metabolite. As a proof of concept, oseltamivir and oseltamivircarboxylate levels were determined in DBS obtained from healthy volunteers who received a single oral dose of Tamiflu®.
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Affiliation(s)
- Gero P Hooff
- Department of Neurology, Laboratory of Neuro-Oncology and Clinical and Cancer Proteomics, University Medical Center Rotterdam (Erasmus MC), Rotterdam, The Netherlands.
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Meesters RJW, van Kampen JJA, Scheuer RD, van der Ende ME, Gruters RA, Luider TM. Determination of the antiretroviral drug tenofovir in plasma from HIV-infected adults by ultrafast isotope dilution MALDI-triple quadrupole tandem mass spectrometry. J Mass Spectrom 2011; 46:282-289. [PMID: 21394844 DOI: 10.1002/jms.1897] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A new and reliable mass spectrometric method using an isotope dilution method in combination with matrix-assisted laser desorption/ionization-triple quadrupole tandem mass spectrometry (ID-MALDI-QqQ-MS/MS) has been developed and validated for the determination of concentrations of the antiretroviral drug tenofovir (TNV) in plasma from HIV-infected adults. The advantage of this new method is that (1) the method is ultrafast and (2) can be applied for high-throughput measurement of TNV in plasma. The method is based on a simple plasma deproteinization step in combination with the use of [adenine-(13) C(5) ]-TNV as the internal standard. TNV and [adenine-(13) C(5) ]-TNV were monitored by multiple reaction monitoring using the transition m/z 288.0 → 176.2 and m/z 293.2 → 181.2 for TNV and [adenine-(13) C(5) ]-TNV, respectively. The method was validated according to the most recent FDA guidelines for the development and validation of (new) bio-analytical assays. Validated method parameters were: linearity, accuracy, precision and stability of the method. The lowest limit of quantification was 0.10 µmol/l, whereas the limit of detection determined at a signal-to-noise ratio (S/N = 3:1) in pooled drug free human control plasma was 0.04 µmol/l. The validated method was successfully applied and tested for its clinical feasibility by the analysis of plasma samples from selected HIV-infected adults receiving the prodrug tenofovir disoproxil fumarate. Observed plasma TNV concentrations ranged between 0.11 and 0.76 µmol/l and measured plasma TNV concentrations were within the therapeutically relevant concentration range.
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Affiliation(s)
- Roland J W Meesters
- Laboratory of Neuro-Oncology and Clinical and Cancer Proteomics, Department of Neurology, University Medical Center Rotterdam, Dr. Molewaterplein 50, 3015 GE Rotterdam, The Netherlands.
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van Kampen JJA, Burgers PC, de Groot R, Gruters RA, Luider TM. Biomedical application of MALDI mass spectrometry for small-molecule analysis. Mass Spectrom Rev 2011; 30:101-120. [PMID: 20169623 DOI: 10.1002/mas.20268] [Citation(s) in RCA: 114] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Matrix-assisted laser desorption/ionization (MALDI) mass spectrometry (MS) is an emerging analytical tool for the analysis of molecules with molar masses below 1,000 Da; that is, small molecules. This technique offers rapid analysis, high sensitivity, low sample consumption, a relative high tolerance towards salts and buffers, and the possibility to store sample on the target plate. The successful application of the technique is, however, hampered by low molecular weight (LMW) matrix-derived interference signals and by poor reproducibility of signal intensities during quantitative analyses. In this review, we focus on the biomedical application of MALDI-MS for the analysis of small molecules and discuss its favorable properties and its challenges as well as strategies to improve the performance of the technique. Furthermore, practical aspects and applications are presented.
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Affiliation(s)
- Jeroen J A van Kampen
- Laboratories of Neuro-Oncology/Clinical and Cancer Proteomics, Department of Neurology, Erasmus MC, Rotterdam, The Netherlands
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Meesters RJW, van Kampen JJA, Reedijk ML, Scheuer RD, Dekker LJM, Burger DM, Hartwig NG, Osterhaus ADME, Luider TM, Gruters RA. Ultrafast and high-throughput mass spectrometric assay for therapeutic drug monitoring of antiretroviral drugs in pediatric HIV-1 infection applying dried blood spots. Anal Bioanal Chem 2010; 398:319-28. [PMID: 20632164 PMCID: PMC2919689 DOI: 10.1007/s00216-010-3952-9] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2010] [Revised: 06/18/2010] [Accepted: 06/20/2010] [Indexed: 12/01/2022]
Abstract
Kaletra® (Abott Laboratories) is a co-formulated medication used in the treatment of HIV-1-infected children, and it contains the two antiretroviral protease inhibitor drugs lopinavir and ritonavir. We validated two new ultrafast and high-throughput mass spectrometric assays to be used for therapeutic drug monitoring of lopinavir and ritonavir concentrations in whole blood and in plasma from HIV-1-infected children. Whole blood was blotted onto dried blood spot (DBS) collecting cards, and plasma was collected simultaneously. DBS collecting cards were extracted by an acetonitrile/water mixture while plasma samples were deproteinized with acetone. Drug concentrations were determined by matrix-assisted laser desorption/ionization-triple quadrupole tandem mass spectrometry (MALDI-QqQ-MS/MS). The application of DBS made it possible to measure lopinavir and ritonavir in whole blood in therapeutically relevant concentrations. The MALDI-QqQ-MS/MS plasma assay was successfully cross-validated with a commonly used high-performance liquid chromatography (HPLC)–ultraviolet (UV) assay for the therapeutic drug monitoring (TDM) of HIV-1-infected patients, and it showed comparable performance characteristics. Observed DBS concentrations showed as well, a good correlation between plasma concentrations obtained by MALDI-QqQ-MS/MS and those obtained by the HPLC-UV assay. Application of DBS for TDM proved to be a good alternative to the normally used plasma screening. Moreover, collection of DBS requires small amounts of whole blood which can be easily performed especially in (very) young children where collection of large whole blood amounts is often not possible. DBS is perfectly suited for TDM of HIV-1-infected children; but nevertheless, DBS can also easily be applied for TDM of patients in areas with limited or no laboratory facilities.
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Affiliation(s)
- Roland J W Meesters
- Department of Neurology, Laboratory of Neuro-Oncology and Clinical and Cancer Proteomics, University Medical Center Rotterdam (Erasmus MC), Dr. Molewaterplein 50, Room Ee-1981, 3015 GE Rotterdam, The Netherlands.
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22
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van Kampen JJA, Reedijk ML, Burgers PC, Dekker LJM, Hartwig NG, van der Ende IE, de Groot R, Osterhaus ADME, Burger DM, Luider TM, Gruters RA. Ultra-fast analysis of plasma and intracellular levels of HIV protease inhibitors in children: a clinical application of MALDI mass spectrometry. PLoS One 2010; 5:e11409. [PMID: 20625386 PMCID: PMC2895665 DOI: 10.1371/journal.pone.0011409] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2009] [Accepted: 05/11/2010] [Indexed: 01/03/2023] Open
Abstract
HIV protease inhibitors must penetrate into cells to exert their action. Differences in the intracellular pharmacokinetics of these drugs may explain why some patients fail on therapy or suffer from drug toxicity. Yet, there is no information available on the intracellular levels of HIV protease inhibitors in HIV infected children, which is in part due to the large amount of sample that is normally required to measure the intracellular concentrations of these drugs. Therefore, we developed an ultra-fast and sensitive assay to measure the intracellular concentrations of HIV protease inhibitors in small amounts of peripheral blood mononuclear cells (PBMCs), and determined the intracellular concentrations of lopinavir and ritonavir in HIV infected children. An assay based on matrix-assisted laser desorption/ionization (MALDI) - triple quadrupole mass spectrometry was developed to determine the concentrations of HIV protease inhibitors in 10 µL plasma and 1×106 PBMCs. Precisions and accuracies were within the values set by the FDA for bioanalytical method validation. Lopinavir and ritonavir did not accumulate in PBMCs of HIV infected children. In addition, the intracellular concentrations of lopinavir and ritonavir correlated poorly to the plasma concentrations of these drugs. MALDI-triple quadrupole mass spectrometry is a new tool for ultra-fast and sensitive determination of drug concentrations which can be used, for example, to assess the intracellular pharmacokinetics of HIV protease inhibitors in HIV infected children.
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Affiliation(s)
- Jeroen J. A. van Kampen
- Department of Neurology, Erasmus MC, Rotterdam, The Netherlands
- Department of Paediatrics, Erasmus MC – Sophia, Rotterdam, The Netherlands
- Department of Virology, Erasmus MC, Rotterdam, The Netherlands
| | | | | | | | - Nico G. Hartwig
- Department of Paediatrics, Erasmus MC – Sophia, Rotterdam, The Netherlands
| | | | - Ronald de Groot
- Department of Paediatrics, University Medical Centre Nijmegen, Nijmegen, The Netherlands
| | | | - David M. Burger
- Department of Clinical Pharmacy, University Medical Centre Nijmegen, Nijmegen, The Netherlands
| | - Theo M. Luider
- Department of Neurology, Erasmus MC, Rotterdam, The Netherlands
- * E-mail:
| | - Rob A. Gruters
- Department of Virology, Erasmus MC, Rotterdam, The Netherlands
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Gruters RA, de Keersmaecker B, de Goede AL, Allard SD, Koetsveld J, Corthals J, Schutten M, Heirman C, Ende MEVD, Lacor P, Osterhaus AD, Thielemans K, van Baalen CA, Aerts JL. P18-03. Dendritic cell-based immune therapy against HIV-1. Retrovirology 2009. [PMCID: PMC2767818 DOI: 10.1186/1742-4690-6-s3-p312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Dekker LJM, van Kampen JJA, Reedijk ML, Burgers PC, Gruters RA, Osterhaus ADME, Luider TM. A mass spectrometry based imaging method developed for the intracellular detection of HIV protease inhibitors. Rapid Commun Mass Spectrom 2009; 23:1183-1188. [PMID: 19283784 DOI: 10.1002/rcm.3981] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Mass spectrometry imaging is a promising technique for measuring drugs and drug metabolites in cells and tissues. In this manuscript we describe a method for the imaging of HIV protease inhibitors. As a model system we used Mono Mac 6 cells cultured with the HIV protease inhibitors saquinavir and nelfinavir deposited on glass slides using a cytocentrifuge. A sublimation/deposition device for homogeneous matrix deposition was constructed which allows imaging of these HIV protease inhibitors at clinically relevant concentrations. Using this matrix sublimation/deposition method, glass slides containing the cytocentrifuged cells can be measured and analyzed by two types of mass spectrometry techniques, viz. matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) and MALDI Fourier transform ion cyclotron resonance (FTICR), and this makes it possible to perform imaging rapidly (MALDI-TOF) and with a very high selectivity (MALDI-FTICR).
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van Baalen CA, Gruters RA, Berkhoff EGM, Osterhaus ADME, Rimmelzwaan GF. FATT-CTL assay for detection of antigen-specific cell-mediated cytotoxicity. Cytometry A 2008; 73:1058-65. [PMID: 18636472 DOI: 10.1002/cyto.a.20613] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Here we describe a flowcytometric assay that measures the defining function of virus-specific cytotoxic T lymphocytes (CTL), i.e., killing viral protein expressing cells. The fluorescent antigen-transfected target cell (FATT)-CTL assay requires no viruses, recombinant viral vectors, or radioactive isotopes to generate CTL target cells that present naturally processed epitopes. It facilitates developing standardized applications in clinical trial settings. Plasmid vectors encoding antigen-green fluorescent protein (GFP) fusion proteins were used directly to nucleofect immortalized B cells or peripheral blood mononuclear cells (PBMCs). Elimination of antigen-GFP expressing cells by cloned CTL, in vitro sensitized PBMC, or ex vivo PBMC was quantified following a 4-18-h coculture period by flowcytometry. This technology successfully detected cell-mediated cytotoxicity in studies involving human PBMC and various viral antigens, including structural proteins of influenza A virus, and structural and nonstructural HIV proteins. Standardized protocols are currently being developed in the framework of a clinical immunotherapy trial in HIV-infected individuals. The FATT-CTL assay principles facilitate standardized flowcytometric detection of antigenic protein-specific cell-mediated cytotoxicity in many different basic research and clinical trial settings. By measuring their defining function, the FATT-CTL assay contributes to a more complete assessment of antigen-specific CTL responses to infection and vaccination.
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Affiliation(s)
- Carel A van Baalen
- Department of Virology, Erasmus MC University Medical Center and Postgraduate School of Molecular Medicine, Rotterdam, The Netherlands.
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Huisman W, Martina BEE, Rimmelzwaan GF, Gruters RA, Osterhaus ADME. Vaccine-induced enhancement of viral infections. Vaccine 2008; 27:505-12. [PMID: 19022319 PMCID: PMC7131326 DOI: 10.1016/j.vaccine.2008.10.087] [Citation(s) in RCA: 136] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2008] [Revised: 10/29/2008] [Accepted: 10/29/2008] [Indexed: 12/19/2022]
Abstract
Examples of vaccine-induced enhancement of susceptibility to virus infection or of aberrant viral pathogenesis have been documented for infections by members of different virus families. Several mechanisms, many of which still are poorly understood, are at the basis of this phenomenon. Vaccine development for lentivirus infections in general, and for HIV/AIDS in particular, has been little successful. Certain experimental lentiviral vaccines even proved to be counterproductive: they rendered vaccinated subjects more susceptible to infection rather than protecting them. For vaccine-induced enhanced susceptibility to infection with certain viruses like feline coronavirus, Dengue virus, and feline immunodeficiency virus, it has been shown that antibody-dependent enhancement (ADE) plays an important role. Other mechanisms may, either in the absence of or in combination with ADE, be involved. Consequently, vaccine-induced enhancement has been a major stumble block in the development of certain flavi-, corona-, paramyxo-, and lentivirus vaccines. Also recent failures in the development of a vaccine against HIV may at least in part be attributed to induction of enhanced susceptibility to infection. There may well be a delicate balance between the induction of protective immunity on the one hand and the induction of enhanced susceptibility on the other. The present paper reviews the currently known mechanisms of vaccine-induced enhancement of susceptibility to virus infection or of aberrant viral pathogenesis.
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Affiliation(s)
- W Huisman
- Erasmus MC, Institute of Virology, P.O. Box 1738, 3000 DR Rotterdam, The Netherlands
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Allard SD, Pletinckx K, Breckpot K, Heirman C, Bonehill A, Michiels A, van Baalen CA, Gruters RA, Osterhaus ADME, Lacor P, Thielemans K, Aerts JL. Functional T-cell responses generated by dendritic cells expressing the early HIV-1 proteins Tat, Rev and Nef. Vaccine 2008; 26:3735-41. [PMID: 18539368 DOI: 10.1016/j.vaccine.2008.04.077] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2007] [Revised: 04/16/2008] [Accepted: 04/17/2008] [Indexed: 11/24/2022]
Abstract
The limitations of highly active anti-retroviral therapy (HAART) have necessitated the development of alternative therapeutic strategies. One of the approaches that has gained prominence in recent years is therapeutic vaccination. We decided to assess the capacity of mature dendritic cells, derived from blood monocytes of HIV-1 infected patients, to generate functional T-cell responses. For this purpose, we constructed a chimeric mRNA encoding the proteins Tat, Rev and Nef. The TaReNef encoding information was linked to the HLA class II-targeting sequence of DC-LAMP. Broadly directed HIV-specific CD4(+) and CD8(+) cytotoxic T cells exhibiting a poly-functional cytokine secretion pattern were generated by co-culturing with autologous chimeric mRNA electroporated dendritic cells. Thus, administration of ex vivo generated dendritic cells expressing the early proteins Tat, Rev and Nef might offer a promising approach for therapeutic vaccination in HIV-1 infection.
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Affiliation(s)
- Sabine D Allard
- The Laboratory of Molecular and Cellular Therapy, Department of Physiology and Immunology, Medical School of the Vrije Universiteit Brussel, Laarbeeklaan 103, 1090 Brussels, Belgium.
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van Kampen JJA, Burgers PC, Gruters RA, Osterhaus ADME, de Groot R, Luider TM, Volmer DA. Quantitative analysis of antiretroviral drugs in lysates of peripheral blood mononuclear cells using MALDI-triple quadrupole mass spectrometry. Anal Chem 2008; 80:4969-75. [PMID: 18533679 DOI: 10.1021/ac800218a] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report here on the use of a prototype matrix-assisted laser desorption/ionization (MALDI)-triple quadrupole mass spectrometer for quantitative analysis of six antiretroviral drugs in lysates of peripheral blood mononuclear cells (PBMC). Of the five investigated MALDI matrixes, 2,5-dihydroxybenzoic acid (DHB) and the novel 7-hydroxy-4-(trifluoromethyl)coumarin (HFMC) showed the broadest application ranges for the antiretroviral drugs. For DHB, the mean relative errors ranged from 8.3 (ritonavir) to 4.3% (saquinavir). The mean precisions (CV) ranged from 17.3 (nevirapine) to 10.8% (saquinavir). The obtained lower limits of quantitation (LLOQ) readily allow clinical applications using just 1 million PBMC from HIV-infected patients under therapy. The new matrix HFMC was used for quantitative analysis of the HIV protease inhibitor indinavir using a stainless steel target plate as well as a target plate with a novel, strongly hydrophobic fluoropolymer coating. Using the coated target plate, the mean relative error improved from 10.1 to 4.6%, the mean precision from 33.9 to 9.9% CV, and the LLOQ from 16 to 1 fmol. In addition, the measurement time for one spot went down from 6 to only 2.5 s.
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Affiliation(s)
- Jeroen J A van Kampen
- Department of Neurology, Laboratory of Neuro-Oncology and Clinical & Cancer Proteomics, Erasmus MC, Rotterdam, The Netherlands
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van Kampen JJA, Burgers PC, de Groot R, Osterhaus ADME, Reedijk ML, Verschuren EJ, Gruters RA, Luider TM. Quantitative Analysis of HIV-1 Protease Inhibitors in Cell Lysates Using MALDI-FTICR Mass Spectrometry. Anal Chem 2008; 80:3751-6. [DOI: 10.1021/ac702072c] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jeroen J. A. van Kampen
- Department of Neurology, Laboratory of Neuro-Oncology and Clinical and Cancer Proteomics and Department of Virology, Erasmus MC, Rotterdam, The Netherlands, Department of Pediatrics, Division of Pediatric Infectious Diseases & Immunology, Erasmus MC-Sophia, Rotterdam, The Netherlands, and Department of Pediatrics, UMC St. Radboud, Nijmegen, The Netherlands
| | - Peter C. Burgers
- Department of Neurology, Laboratory of Neuro-Oncology and Clinical and Cancer Proteomics and Department of Virology, Erasmus MC, Rotterdam, The Netherlands, Department of Pediatrics, Division of Pediatric Infectious Diseases & Immunology, Erasmus MC-Sophia, Rotterdam, The Netherlands, and Department of Pediatrics, UMC St. Radboud, Nijmegen, The Netherlands
| | - Ronald de Groot
- Department of Neurology, Laboratory of Neuro-Oncology and Clinical and Cancer Proteomics and Department of Virology, Erasmus MC, Rotterdam, The Netherlands, Department of Pediatrics, Division of Pediatric Infectious Diseases & Immunology, Erasmus MC-Sophia, Rotterdam, The Netherlands, and Department of Pediatrics, UMC St. Radboud, Nijmegen, The Netherlands
| | - Albert D. M. E. Osterhaus
- Department of Neurology, Laboratory of Neuro-Oncology and Clinical and Cancer Proteomics and Department of Virology, Erasmus MC, Rotterdam, The Netherlands, Department of Pediatrics, Division of Pediatric Infectious Diseases & Immunology, Erasmus MC-Sophia, Rotterdam, The Netherlands, and Department of Pediatrics, UMC St. Radboud, Nijmegen, The Netherlands
| | - Mariska L. Reedijk
- Department of Neurology, Laboratory of Neuro-Oncology and Clinical and Cancer Proteomics and Department of Virology, Erasmus MC, Rotterdam, The Netherlands, Department of Pediatrics, Division of Pediatric Infectious Diseases & Immunology, Erasmus MC-Sophia, Rotterdam, The Netherlands, and Department of Pediatrics, UMC St. Radboud, Nijmegen, The Netherlands
| | - Esther J. Verschuren
- Department of Neurology, Laboratory of Neuro-Oncology and Clinical and Cancer Proteomics and Department of Virology, Erasmus MC, Rotterdam, The Netherlands, Department of Pediatrics, Division of Pediatric Infectious Diseases & Immunology, Erasmus MC-Sophia, Rotterdam, The Netherlands, and Department of Pediatrics, UMC St. Radboud, Nijmegen, The Netherlands
| | - Rob A. Gruters
- Department of Neurology, Laboratory of Neuro-Oncology and Clinical and Cancer Proteomics and Department of Virology, Erasmus MC, Rotterdam, The Netherlands, Department of Pediatrics, Division of Pediatric Infectious Diseases & Immunology, Erasmus MC-Sophia, Rotterdam, The Netherlands, and Department of Pediatrics, UMC St. Radboud, Nijmegen, The Netherlands
| | - Theo M. Luider
- Department of Neurology, Laboratory of Neuro-Oncology and Clinical and Cancer Proteomics and Department of Virology, Erasmus MC, Rotterdam, The Netherlands, Department of Pediatrics, Division of Pediatric Infectious Diseases & Immunology, Erasmus MC-Sophia, Rotterdam, The Netherlands, and Department of Pediatrics, UMC St. Radboud, Nijmegen, The Netherlands
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Berkhoff EGM, Geelhoed-Mieras MM, Verschuren EJ, van Baalen CA, Gruters RA, Fouchier RAM, Osterhaus ADME, Rimmelzwaan GF. The loss of immunodominant epitopes affects interferon-gamma production and lytic activity of the human influenza virus-specific cytotoxic T lymphocyte response in vitro. Clin Exp Immunol 2007; 148:296-306. [PMID: 17326762 PMCID: PMC1868867 DOI: 10.1111/j.1365-2249.2007.03340.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
In the present study, we examined the effect of the loss of the human leucocyte antigen (HLA)-B*3501-restricted nucleoprotein (NP)(418-426) epitope on interferon (IFN)-gamma-production and lytic activity of the human cytotoxic T lymphocyte (CTL) response in vitro. Extensive amino acid variation at T cell receptor contact residues of the NP(418-426) epitope has led to repeated evasion from specific CTL. We generated recombinant influenza viruses with variants of the NP(418-426) epitope, which were used to stimulate peripheral blood mononuclear cells obtained from six HLA-B*3501-positive study subjects in order to expand virus-specific CTL. Loss of the NP(418-426) epitope resulted in a significant reduction of IFN-gamma-expressing CD8+ T cells, similar to that observed previously after the loss of the HLA-B*2705-restricted NP(383-391) epitope. In addition, the effect of the loss of the NP(418-426) epitope on the lytic activity of the virus-specific CTL response was assessed. Also this functional property of the virus-specific CTL response was affected significantly by the loss of this and the NP(383-391) epitope, as determined using the newly developed fluorescent antigen-transfected target cell (FATT)-CTL assay. These findings indicate that the loss of single immunodominant epitopes affects the functionality of the virus-specific CTL response significantly.
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Affiliation(s)
- E G M Berkhoff
- Department of Virology and Postgraduate School of Molecular Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
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van Kampen JJA, Verschuren EJ, Burgers PC, Luider TM, de Groot R, Osterhaus ADME, Gruters RA. Validation of an HIV-1 inactivation protocol that is compatible with intracellular drug analysis by mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2006; 847:38-44. [PMID: 17055786 DOI: 10.1016/j.jchromb.2006.10.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2006] [Revised: 09/27/2006] [Accepted: 10/01/2006] [Indexed: 11/28/2022]
Abstract
Mass spectrometry is a powerful tool for studying the intracellular pharmacokinetics of antiretroviral drugs. However, the biohazard of HIV-1 calls for a safety protocol for such analyses. To this end, we extracted HIV-1 producing cells with methanol or ethanol at 4 degrees C. After extraction, no viral infectivity was detected, as shown by a reduction in infectious titers of more than 6log. In addition, this protocol is compatible with the quantitative analysis of antiretroviral drugs in cell extracts using matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) MS. Thus, using this protocol, infectious HIV-1 is inactivated and antiretroviral drugs are extracted from cells in a single step.
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Affiliation(s)
- Jeroen J A van Kampen
- Department of Neurology, Laboratory of Neuro-Oncology, Erasmus MC, Rotterdam, The Netherlands
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van Baalen CA, Kwa D, Verschuren EJ, Reedijk ML, Boon ACM, de Mutsert G, Rimmelzwaan GF, Osterhaus ADME, Gruters RA. Fluorescent Antigen–Transfected Target Cell Cytotoxic T Lymphocyte Assay for Ex Vivo Detection of Antigen‐Specific Cell‐Mediated Cytotoxicity. J Infect Dis 2005; 192:1183-90. [PMID: 16136460 DOI: 10.1086/444546] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2005] [Accepted: 05/13/2005] [Indexed: 11/03/2022] Open
Abstract
Ex vivo detection of virus-specific cytotoxic T lymphocyte (CTL) responses is limited to the use of methods assessing cytokine production, degranulation, or perforin contents of antigen-specific CD8+ T cells. Generally, their cytotoxic activity is detectable only after cultivation. We describe the fluorescent antigentransfected target cellCTL (FATT-CTL) assay, which measures antigen-specific cytotoxicity ex vivo. Target cells were generated by nucleofection with DNA vectors encoding antigengreen fluorescent protein (GFP) fusion proteins. After coculture at various effector : target (E : T) cell ratios, viable and dead GFP-positive cells were quantified by flow cytometry, and antigen-specific target-cell elimination was calculated. The assay was validated with human immunodeficiency virus (HIV) and influenza virusspecific CTL clones and revealed cytotoxicity at lower E : T cell ratios than standard 51Cr-release assays. Moreover, antigen-specific cytotoxicity was detected ex vivo within 1 day in peripheral blood mononuclear cells from HIV-infected individuals. The FATT-CTL assay provides a versatile tool that will advance our understanding of cell-mediated immunity.
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Affiliation(s)
- Carel A van Baalen
- Department of Virology, Erasmus MC, University Medical Center and Postgraduate School of Molecular Medicine, Rotterdam, The Netherlands
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Gruters RA, Osterhaus ADME. HIV and Smallpox. Science 2005; 308:1258-9; author reply 1258-9. [PMID: 15919975 DOI: 10.1126/science.308.5726.1258b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Blaak H, Boers PHM, Gruters RA, Schuitemaker H, van der Ende ME, Osterhaus ADME. CCR5, GPR15, and CXCR6 are major coreceptors of human immunodeficiency virus type 2 variants isolated from individuals with and without plasma viremia. J Virol 2005; 79:1686-700. [PMID: 15650194 PMCID: PMC544080 DOI: 10.1128/jvi.79.3.1686-1700.2005] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Human immunodeficiency virus type 2 (HIV-2) is generally considered capable of using a broad range of coreceptors. Since HIV-2 variants from individuals with nonprogressive infection were not studied previously, the possibility that broad coreceptor usage is a property of variants associated with progressive infection could not be excluded. To test this, we determined the coreceptor usage of 43 HIV-2 variants isolated from six long-term-infected individuals with undetectable plasma viremia. Using GHOST indicator cells, we showed for the first time that the only coreceptors efficiently used by low-pathogenic HIV-2 variants are CCR5, GPR15 (BOB), and CXCR6 (BONZO). Surprisingly, control HIV-2 variants (n = 45) isolated from seven viremic individuals also mainly used these three coreceptors, whereas use of CCR1, CCR2b, or CCR3 was rare. Nearly a quarter of all HIV-2 variants tested could infect the parental GHOST cells, which could be partially explained by CXCR4 usage. Use of CXCR4 was observed only for HIV-2 variants from viremic individuals. Thirty-eight variants from aviremic and viremic HIV-2-infected individuals were additionally tested in U87 cells. All except one were capable of infecting the parental U87 cells, often with high efficiency. When virus production in parental cells was regarded as background in the coreceptor-transduced cell lines, the results in U87 cells were largely in agreement with the findings in GHOST cells. HIV-2 isolates from aviremic individuals commonly use as coreceptors CCR5, GPR15, and CXCR6, as well as an unidentified receptor expressed by U87 cells. Broad coreceptor usage, therefore, does not appear to be associated with pathogenicity of HIV-2.
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Affiliation(s)
- H Blaak
- Department of Virology, Room Ee1742a, Erasmus MC, PO Box 1738, 3000 DR Rotterdam, The Netherlands.
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van der Kuyl AC, van den Burg R, Hoyer MJ, Gruters RA, Osterhaus ADME, Berkhout B. SIVdrl detection in captive mandrills: are mandrills infected with a third strain of simian immunodeficiency virus? Retrovirology 2004; 1:36. [PMID: 15516270 PMCID: PMC529309 DOI: 10.1186/1742-4690-1-36] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2004] [Accepted: 11/01/2004] [Indexed: 11/10/2022] Open
Abstract
A pol-fragment of simian immunodeficiency virus (SIV) that is highly related to SIVdrl-pol from drill monkeys (Mandrillus leucophaeus) was detected in two mandrills (Mandrillus sphinx) from Amsterdam Zoo. These captivity-born mandrills had never been in contact with drill monkeys, and were unlikely to be hybrids. Their mitochondrial haplotype suggested that they descended from founder animals in Cameroon or northern Gabon, close to the habitat of the drill. SIVdrl has once before been found in a wild-caught mandrill from the same region, indicating that mandrills are naturally infected with a SIVdrl-like virus. This suggests that mandrills are the first primate species to be infected with three strains of SIV: SIVmnd1, SIVmnd2, and SIVdrl.
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Affiliation(s)
- Antoinette C van der Kuyl
- Department of Human Retrovirology, Academic Medical Centre, University of Amsterdam, Meibergdreef 15, 1105 AZ Amsterdam, The Netherlands
| | - Remco van den Burg
- Department of Human Retrovirology, Academic Medical Centre, University of Amsterdam, Meibergdreef 15, 1105 AZ Amsterdam, The Netherlands
| | - Mark J Hoyer
- Artis, Plantage Kerklaan 38–40, 1018 CZ Amsterdam, The Netherlands
| | - Rob A Gruters
- Department of Virology, Erasmus Medical Centre, P.O Box 1738, 3000 DR Rotterdam, The Netherlands
| | - Albert DME Osterhaus
- Department of Virology, Erasmus Medical Centre, P.O Box 1738, 3000 DR Rotterdam, The Netherlands
| | - Ben Berkhout
- Department of Human Retrovirology, Academic Medical Centre, University of Amsterdam, Meibergdreef 15, 1105 AZ Amsterdam, The Netherlands
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Abstract
Vaccination with Rev and Tat can induce or boost immune responses that control HIV more effectively than those generated in the context of a natural infection.
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van Baalen CA, Guillon C, van Baalen M, Verschuren EJ, Boers PHM, Osterhaus ADME, Gruters RA. Impact of antigen expression kinetics on the effectiveness of HIV-specific cytotoxic T lymphocytes. Eur J Immunol 2002; 32:2644-52. [PMID: 12207349 DOI: 10.1002/1521-4141(200209)32:9<2644::aid-immu2644>3.0.co;2-r] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Recent studies indicate that the time required for virus-infected cells to become vulnerable for the activity of CTL is of significance for the capacity of CTL to control ongoing viral reproduction. To investigate whether this applies to the effectiveness of HIV-1-specific CTL, we measured virus production in cultures containing CD4(+) T cells inoculated with HIV at low multiplicity of infection, and CTL directed against an early protein, Rev, or a late protein, RT. The Rev-specific CTL prevented at least 2 log(10) more HIV-1 production, in 10 days, than similar numbers of RT-specific CTL. To study how CTL effectiveness depends on variations in the potency of effector functions and kinetics of HIV protein expression, we developed a mathematical model describing CTL-target cell interactions during successive infection cycles. The results show that substantially higher CTL-mediated target cell elimination rates are required to achieve control as there is less time for CTL to act before infected cells release progeny virions. Furthermore, in vitro experiments with HIV recombinant viruses showed that the RT-specific CTL were at least as effective as the Rev-specific CTL, but only if the RT epitope was expressed as part of the early protein Nef. Together these results indicate that CTL control ongoing HIV reproduction more effectively if they are able to recognize infected cells earlier during individual viral replication cycles. This provides rationale for immunization strategies that aim at inducing, boosting or skewing CTL responses to early regulatory proteins in AIDS vaccine development.
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MESH Headings
- CD4-Positive T-Lymphocytes/immunology
- Cytotoxicity, Immunologic
- Epitopes/immunology
- Gene Expression Regulation, Viral
- Gene Products, nef/biosynthesis
- Gene Products, nef/immunology
- Gene Products, rev/biosynthesis
- Gene Products, rev/immunology
- HIV Antigens/biosynthesis
- HIV Antigens/immunology
- HIV Reverse Transcriptase/biosynthesis
- HIV Reverse Transcriptase/immunology
- HIV-1/immunology
- HIV-1/physiology
- Humans
- Kinetics
- Models, Immunological
- T-Lymphocyte Subsets/immunology
- T-Lymphocytes, Cytotoxic/immunology
- Virus Replication
- nef Gene Products, Human Immunodeficiency Virus
- rev Gene Products, Human Immunodeficiency Virus
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Gruters RA. Seeing stars. Nature 2002; 418:915. [PMID: 12198519 DOI: 10.1038/418915c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Stittelaar KJ, Gruters RA, Schutten M, van Baalen CA, van Amerongen G, Cranage M, Liljeström P, Sutter G, Osterhaus ADME. Comparison of the efficacy of early versus late viral proteins in vaccination against SIV. Vaccine 2002; 20:2921-7. [PMID: 12126903 DOI: 10.1016/s0264-410x(02)00219-0] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The immune response against early regulatory proteins of simian- and human immunodeficiency virus (SIV, HIV) has been associated with a milder course of infection. Here, we directly compared vaccination with Tat/Rev versus Pol/Gag. Challenge infection with SIVmac32H (pJ5) suggested that vaccination with Tat/Rev induced cellular immune responses that enabled cynomolgus macaques to more efficiently control SIV replication than the vaccine-induced immune responses against Pol/Gag. Vaccination with Tat/Rev resulted in reduced plasma SIV loads compared with control (P=0.058) or Pol/Gag-vaccinated (P=0.089) animals, with undetectable plasma viral loads in two of the four Tat/Rev-vaccinated animals. Therefore, the results warrant further investigation of the early regulatory proteins and their potential for vaccination against HIV.
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MESH Headings
- Animals
- Antibodies, Viral/biosynthesis
- Antibodies, Viral/blood
- Base Sequence
- Gene Products, gag/genetics
- Gene Products, gag/immunology
- Gene Products, pol/genetics
- Gene Products, pol/immunology
- Gene Products, rev/genetics
- Gene Products, rev/immunology
- Gene Products, tat/genetics
- Gene Products, tat/immunology
- Humans
- Immunity, Cellular
- Macaca fascicularis
- RNA, Viral/blood
- RNA, Viral/genetics
- SAIDS Vaccines/genetics
- SAIDS Vaccines/immunology
- Simian Acquired Immunodeficiency Syndrome/immunology
- Simian Acquired Immunodeficiency Syndrome/prevention & control
- Simian Acquired Immunodeficiency Syndrome/virology
- Simian Immunodeficiency Virus/genetics
- Simian Immunodeficiency Virus/immunology
- Viremia/immunology
- Viremia/prevention & control
- Viremia/virology
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Affiliation(s)
- Koert J Stittelaar
- Department of Virology, Erasmus Medical Centre Rotterdam, Dr Molewaterplein 50, 3015 GE Rotterdam, The Netherlands
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Abstract
Accumulating evidence indicates that cytotoxic T-lymphocytes (CTL) play an important role in the clearing of primary and control of chronic human immunodeficiency virus (HIV) infection. Here, we discuss recent findings that indicate that the timing of target cell recognition critically contributes to CTL effectiveness. In this light several problems that have troubled CTL research are discussed. The use of early proteins like Tat and Rev is proposed for future vaccines design.
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MESH Headings
- AIDS Vaccines
- Amino Acid Sequence
- Animals
- Antigen Presentation
- Cytotoxicity, Immunologic
- Epitopes/immunology
- Female
- Gene Expression Regulation, Viral
- Gene Products, rev/immunology
- Gene Products, rev/physiology
- Gene Products, tat/immunology
- Gene Products, tat/physiology
- HIV Antigens/genetics
- HIV Antigens/immunology
- HIV Infections/immunology
- HIV Long-Term Survivors
- HIV-1/genetics
- HIV-1/immunology
- HLA Antigens/immunology
- Humans
- Immunity, Innate
- Kenya
- Macaca
- Mice
- Sex Work
- Simian Acquired Immunodeficiency Syndrome/immunology
- T-Lymphocytes, Cytotoxic/immunology
- Time Factors
- Viral Load
- Viremia/immunology
- rev Gene Products, Human Immunodeficiency Virus
- tat Gene Products, Human Immunodeficiency Virus
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Affiliation(s)
- Rob A Gruters
- Department of Virology, Erasmus MC, P.O. Box 1738, 3000 DR Rotterdam, The Netherlands
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Guillon C, Schutten M, Boers PHM, Gruters RA, Osterhaus ADME. Antibody-mediated enhancement of human immunodeficiency virus type 1 infectivity is determined by the structure of gp120 and depends on modulation of the gp120-CCR5 interaction. J Virol 2002; 76:2827-34. [PMID: 11861850 PMCID: PMC135957 DOI: 10.1128/jvi.76.6.2827-2834.2002] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
In this study, we characterized the viral determinants of coreceptor usage in relation to susceptibility to antibody-mediated neutralization or enhancement of infectivity by using chimeras of three highly related human immunodeficiency virus type 1 (HIV-1) isolates of different phenotypes. We found that the V3 region was the main determinant of antibody-mediated enhancement and coreceptor specificity but that the overall structure of gp120 was also important for these properties. Constructs susceptible to antibody-mediated enhancement preferentially use CCR5 as a coreceptor, in contrast to constructs that were neutralized or not affected. Using monoclonal antibodies directed against CD4 or CCR5, we were able to show that antibody-mediated enhancement was CD4 dependent. Altogether, our results suggest that the modulation of the interaction of gp120 with CCR5 is the mechanism underlying antibody-mediated enhancement of HIV-1 infectivity.
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Affiliation(s)
- Christophe Guillon
- Department of Virology, Erasmus University Rotterdam, 3015 GE Rotterdam, The Netherlands
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Guillon C, van Baalen CA, Boers PHM, Verschuren EJ, Gruters RA, Osterhaus ADME. Construction and characterisation of infectious recombinant HIV-1 clones containing CTL epitopes from structural proteins in Nef. J Virol Methods 2002; 99:115-21. [PMID: 11684309 DOI: 10.1016/s0166-0934(01)00389-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
In this study the construction is described of HIV-1 molecular clones in which CTL epitopes from RT or Env late proteins were inserted into the Nef early protein. The ectopic epitopes were efficiently processed from the recombinant Nef proteins, were recognized by their cognate CTL in cytolytic assays, and did not perturb virus replication or viral protein expression in vitro. These recombinant viruses will therefore be an important tool in studying the effect of distinct epitope expression kinetics on the efficiency of CTL-mediated suppression of HIV-1 replication.
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Affiliation(s)
- Christophe Guillon
- Department of Virology, Erasmus Medical Center Rotterdam, PO Box 1738, 3000 DR, Rotterdam, The Netherlands
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Schutten M, van Baalen CA, Guillon C, Huisman RC, Boers PH, Sintnicolaas K, Gruters RA, Osterhaus AD. Macrophage tropism of human immunodeficiency virus type 1 facilitates in vivo escape from cytotoxic T-lymphocyte pressure. J Virol 2001; 75:2706-9. [PMID: 11222694 PMCID: PMC115895 DOI: 10.1128/jvi.75.6.2706-2709.2001] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Early after seroconversion, macrophage-tropic human immunodeficiency virus type 1 (HIV-1) variants are predominantly found, even when a mixture of macrophage-tropic and non-macrophage-tropic variants was transmitted. For virus contracted by sexual transmission, this is presently explained by selection at the port of entry, where macrophages are infected and T cells are relatively rare. Here we explore an additional mechanism to explain the selection of macrophage-tropic variants in cases where the mucosa is bypassed during transmission, such as blood transfusion, needle-stick accidents, or intravenous drug abuse. With molecularly cloned primary isolates of HIV-1 in irradiated mice that had been reconstituted with a high dose of human peripheral blood mononuclear cells, we found that a macrophage-tropic HIV-1 clone escaped more efficiently from specific cytotoxic T-lymphocyte (CTL) pressure than its non-macrophage-tropic counterpart. We propose that CTLs favor the selective outgrowth of macrophage-tropic HIV-1 variants because infected macrophages are less susceptible to CTL activity than infected T cells.
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Affiliation(s)
- M Schutten
- Institute of Virology, University Hospital Rotterdam, 3015 GE Rotterdam, The Netherlands
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van der Ende ME, Guillon C, Boers PH, Ly TD, Gruters RA, Osterhaus AD, Schutten M. Antiviral resistance of biologic HIV-2 clones obtained from individuals on nucleoside reverse transcriptase inhibitor therapy. J Acquir Immune Defic Syndr 2000; 25:11-8. [PMID: 11064499 DOI: 10.1097/00042560-200009010-00002] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To study phenotypic and genotypic resistance of HIV-2 against nucleoside reverse transcriptase inhibitors (NRTI). METHODS Biologic HIV-2 clones were generated from 3 patients before and after initiation of antiretroviral therapy with zidovudine (AZT) in patient RH2-7, AZT and didanosine (ddI) in patient PH2-1, and after addition of lamivudine (3TC) to AZT monotherapy in patient RH2-5. The sensitivity to NRTI of the virus clones, as defined by the 50% inhibitory concentration (IC(50)), was determined in vitro. The predicted amino acid sequences of the reverse transcriptase proteins from these clones were determined. RESULTS Comparing the sensitivity of the biologic HIV-2 clones obtained after start of therapy with those from antiviral naive patients, resistance had developed to AZT (patients RH2-7 and RH2-5) and 3TC (patient PH2-1 and RH2-5). No resistance to AZT was observed in the biologic clone from PH2-1 obtained after start of therapy. The resistant clones from RH2-5 and PH2-1, but not RH2-7, contained amino acid mutations at positions where HIV-1 has been shown to mutate after AZT and 3TC treatment. CONCLUSIONS Phenotypic resistance of HIV-2 to nucleoside analogues, which developed in HIV-2-infected patients treated with NRTIs, was associated with genotypic changes. Some of the mutations at amino acid positions in the HIV-2 reverse transcriptase gene corresponded with those involved in HIV-1 resistance, although no conventional mutations associated with resistance to AZT were observed.
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Affiliation(s)
- M E van der Ende
- Department of Internal Medicine, University Hospital Centre Rotterdam, Rotterdam, The Netherlands
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45
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Schutten M, van den Hoogen B, van der Ende ME, Gruters RA, Osterhaus AD, Niesters HG. Development of a real-time quantitative RT-PCR for the detection of HIV-2 RNA in plasma. J Virol Methods 2000; 88:81-7. [PMID: 10921845 DOI: 10.1016/s0166-0934(00)00177-4] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
An assay is described for the quantification of human immunodeficiency virus type 2 (HIV-2) RNA in EDTA plasma based on RT-PCR using the Taqman real-time PCR detection method. As standard, an electron microscopically counted virus stock of HIV-2 strain NIHZ was used. The lower detection limit is 5 # 102 HIV-2 RNA copies per ml of EDTA plasma. The assay is linear within the range required (5 # 102-106 HIV-2 RNA copies/ml of EDTA plasma) with an intra assay variability of 2.5% and an inter-assay variability ranging from 2% at 106 copies to 7.5% at the lower detection limit. Three primer/probe combinations were developed to circumvent false negative samples due to nucleotide variation in the target sequence. Using these primer/probe sets enabled the detection of HIV-2 DNA sequences from all HIV-2 seropositive individuals and two out of five dual human immunodeficiency virus type 1 (HIV-1) and HIV-2 seropositive individuals visiting the University Hospital Rotterdam.
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Affiliation(s)
- M Schutten
- Department of Virology, Erasmus Medical Centre Rotterdam, The Netherlands.
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46
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van Der Ende ME, Guillon C, Boers PH, Gruters RA, Racz P, Tenner-Racz K, Osterhaus AD, Schutten M. Broadening of coreceptor usage by human immunodeficiency virus type 2 does not correlate with increased pathogenicity in an in vivo model. J Gen Virol 2000; 81:507-13. [PMID: 10644850 DOI: 10.1099/0022-1317-81-2-507] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The pathogenic properties of four primary human immunodeficiency virus type 2 (HIV-2) isolates and two primary HIV-2 biological clones were studied in an in vivo human-to-mouse chimeric model. The cell-associated viral load and the ability to reduce the severity of the induced graft-versus-host disease symptoms, the CD4/CD8 ratio and the level of repopulation of the mouse tissues by the graft, were determined. All HIV-2 strains, irrespective of their in vitro biological phenotype, replicated to high titres and significantly reduced graft-versus-host disease symptoms as well as the CD4/CD8 ratios. Reduction of graft repopulation caused by infection with the respective HIV-2 strains showed that the in vitro replication rate, syncytium-inducing capacity and ability to infect human macrophages did influence the in vivo pathogenic potential whereas broadening of coreceptor usage did not.
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Affiliation(s)
- M E van Der Ende
- Department of Virology, Erasmus Medical Centre Rotterdam, Dr Molewaterplein 50, 3015 GE Rotterdam, The Netherlands
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47
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Osterhaus AD, van Baalen CA, Gruters RA, Schutten M, Siebelink CH, Hulskotte EG, Tijhaar EJ, Randall RE, van Amerongen G, Fleuchaus A, Erfle V, Sutter G. Vaccination with Rev and Tat against AIDS. Vaccine 1999; 17:2713-4. [PMID: 10418922 DOI: 10.1016/s0264-410x(98)00498-8] [Citation(s) in RCA: 83] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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48
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Van Baalen CA, Schutten M, Huisman RC, Boers PH, Gruters RA, Osterhaus AD. Kinetics of antiviral activity by human immunodeficiency virus type 1-specific cytotoxic T lymphocytes (CTL) and rapid selection of CTL escape virus in vitro. J Virol 1998; 72:6851-7. [PMID: 9658134 PMCID: PMC109894 DOI: 10.1128/jvi.72.8.6851-6857.1998] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
The antiviral activity of a CD8(+) cytotoxic T-lymphocyte (CTL) clone (TCC108) directed against a newly identified HLA-B14-restricted epitope, human immunodeficiency virus type 1 (HIV-1) Rev(67-75) SAEPVPLQL, was analyzed with respect to its kinetics of target cell lysis and inhibition of HIV-1 production. Addition of TCC108 cells or CD8(+) reverse transcriptase-specific CTLs to HLA-matched CD4(+) T cells at different times after infection with HIV-1 IIIB showed that infected cells became susceptible to CTL-mediated lysis before peak virus production but after the onset of progeny virus release. When either of these CTLs were added to part of the infected cells immediately after infection, p55 expression and virus production were significantly suppressed. These data support a model in which CTLs, apart from exerting cytolytic activity which may prevent continued virus release, can interfere with viral protein expression during the eclipse phase via noncytolytic mechanisms. TCC108-mediated inhibition of virus replication in peripheral blood mononuclear cells caused rapid selection of a virus with a mutation (69E-->K) in the Rev(67-75) CTL epitope which abolished recognition by TCC108 cells. Taken together, these data suggest that both cytolytic and noncytolytic antiviral mechanisms of CTLs can be specifically targeted to HIV-1-infected cells.
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Affiliation(s)
- C A Van Baalen
- Institute of Virology, Erasmus University, Rotterdam, The Netherlands
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Guillon C, van der Ende ME, Boers PH, Gruters RA, Schutten M, Osterhaus AD. Coreceptor usage of human immunodeficiency virus type 2 primary isolates and biological clones is broad and does not correlate with their syncytium-inducing capacities. J Virol 1998; 72:6260-3. [PMID: 9621102 PMCID: PMC110457 DOI: 10.1128/jvi.72.7.6260-6263.1998] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Entry of human immunodeficiency virus type 1 (HIV-1) into target cells is mediated by binding of the surface envelope glycoprotein to the CD4 molecule. Interaction of the resulting CD4-glycoprotein complex with alpha- or beta-chemokine receptors, depending on the biological phenotype of the virus, then initiates the fusion process. Here, we show that primary HIV-2 isolates and biological clones, in contrast to those of HIV-1, may use a broad range of coreceptors, including CCR-1, CCR-3, CCR-5, and CXCR-4. The syncytium-inducing capacity of these viruses did not correlate with the ability to infect via CXCR-4 or any other coreceptor. One cell-free passage of the intermediate isolates in mitogen-stimulated, CD8+ cell-depleted peripheral blood mononuclear cells resulted in the outgrowth of variants with CCR-5 only, whereas the coreceptor usage of late and early isolates did not change. Since HIV-2 is less pathogenic in vivo than HIV-1, these data suggest that HIV pathogenicity in vivo is not directly related to the spectrum of coreceptors used in in vitro systems.
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Affiliation(s)
- C Guillon
- Institute of Virology, Erasmus University Rotterdam, Rotterdam, The Netherlands
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van Baalen CA, Pontesilli O, Huisman RC, Geretti AM, Klein MR, de Wolf F, Miedema F, Gruters RA, Osterhaus AD. Human immunodeficiency virus type 1 Rev- and Tat-specific cytotoxic T lymphocyte frequencies inversely correlate with rapid progression to AIDS. J Gen Virol 1997; 78 ( Pt 8):1913-8. [PMID: 9266987 DOI: 10.1099/0022-1317-78-8-1913] [Citation(s) in RCA: 154] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Immunological correlates of AIDS-free survival after human immunodeficiency virus type 1 (HIV-1) infection are largely unknown. Cytotoxic T lymphocyte (CTL) responses are generally believed to be a major component of protective immunity against viral infections. However, the relationship between HIV-1-specific CTL responses and disease progression rate is presently unclear. Here we show in twelve HIV-1-infected individuals that detection of Rev-specific CTL precursors (CTLp) early in the asymptomatic stage, as well as detection of Rev- and Tat-specific CTLp later during follow-up, inversely correlate with rapid disease progression. No such correlation was found for detection of CTLp against Gag, RT or Nef. Further studies are required to determine whether a protective mechanism is indeed the basis of the observed correlation. The data presented are in agreement with the hypothesis that CTL against proteins that are important for early viral transcription and translation are of particular importance in protection from rapid disease progression.
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Affiliation(s)
- C A van Baalen
- Institute of Virology, Erasmus University Rotterdam, The Netherlands
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