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Pohlmeyer CW, Shang C, Han P, Cui ZH, Jones RM, Clarke AS, Murray BP, Lopez DA, Newstrom DW, Inzunza MD, Matzkies FG, Currie KS, Di Paolo JA. Characterization of the mechanism of action of lanraplenib, a novel spleen tyrosine kinase inhibitor, in models of lupus nephritis. BMC Rheumatol 2021; 5:15. [PMID: 33781343 PMCID: PMC8008554 DOI: 10.1186/s41927-021-00178-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 02/27/2020] [Accepted: 01/22/2021] [Indexed: 12/19/2022] Open
Abstract
Background B cells are critical mediators of systemic lupus erythematosus (SLE) and lupus nephritis (LN), and antinuclear antibodies can be found in the serum of approximately 98% of patients with SLE. Spleen tyrosine kinase (SYK) is a nonreceptor tyrosine kinase that mediates signaling from immunoreceptors, including the B cell receptor. Active, phosphorylated SYK has been observed in tissues from patients with SLE or cutaneous lupus erythematosus, and its inhibition is hypothesized to ameliorate disease pathogenesis. We sought to evaluate the efficacy and characterize the mechanism of action of lanraplenib, a selective oral SYK inhibitor, in the New Zealand black/white (NZB/W) murine model of SLE and LN. Methods Lanraplenib was evaluated for inhibition of primary human B cell functions in vitro. Furthermore, the effect of SYK inhibition on ameliorating LN-like disease in vivo was determined by treating NZB/W mice with lanraplenib, cyclophosphamide, or a vehicle control. Glomerulopathy and immunoglobulin G (IgG) deposition were quantified in kidneys. The concentration of proinflammatory cytokines was measured in serum. Splenocytes were analyzed by flow cytometry for B cell maturation and T cell memory maturation, and the presence of T follicular helper and dendritic cells. Results In human B cells in vitro, lanraplenib inhibited B cell activating factor-mediated survival as well as activation, maturation, and immunoglobulin M production. Treatment of NZB/W mice with lanraplenib improved overall survival, prevented the development of proteinuria, and reduced blood urea nitrogen concentrations. Kidney morphology was significantly preserved by treatment with lanraplenib as measured by glomerular diameter, protein cast severity, interstitial inflammation, vasculitis, and frequency of glomerular crescents; treatment with lanraplenib reduced glomerular IgG deposition. Mice treated with lanraplenib had reduced concentrations of serum proinflammatory cytokines. Lanraplenib blocked disease-driven B cell maturation and T cell memory maturation in the spleen. Conclusions Lanraplenib blocked the progression of LN-like disease in NZB/W mice. Human in vitro and murine in vivo data suggest that lanraplenib may be efficacious in preventing disease progression in patients with LN at least in part by inhibiting B cell maturation. These data provide additional rationale for the use of lanraplenib in the treatment of SLE and LN. Supplementary Information The online version contains supplementary material available at 10.1186/s41927-021-00178-3.
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Affiliation(s)
| | - Ching Shang
- Department of Biology, Gilead Sciences, Inc., 333 Lakeside Dr, Foster City, CA, 94404, USA
| | - Pei Han
- Department of Biology, Gilead Sciences, Inc., 333 Lakeside Dr, Foster City, CA, 94404, USA
| | - Zhi-Hua Cui
- Department of Biology, Gilead Sciences, Inc., 333 Lakeside Dr, Foster City, CA, 94404, USA
| | - Randall M Jones
- Department of Biology, Gilead Sciences, Inc., 333 Lakeside Dr, Foster City, CA, 94404, USA
| | - Astrid S Clarke
- Department of Biology, Gilead Sciences, Inc., 333 Lakeside Dr, Foster City, CA, 94404, USA
| | - Bernard P Murray
- Department of Drug Metabolism, Gilead Sciences, Inc., Foster City, CA, USA
| | - David A Lopez
- Department of Biology, Gilead Sciences, Inc., 333 Lakeside Dr, Foster City, CA, 94404, USA
| | - David W Newstrom
- Department of Nonclinical Safety and Pathobiology, Gilead Sciences, Inc., Foster City, CA, USA
| | - M David Inzunza
- Department of Nonclinical Safety and Pathobiology, Gilead Sciences, Inc., Foster City, CA, USA
| | | | - Kevin S Currie
- Department of Chemistry, Gilead Sciences, Inc., Foster City, CA, USA
| | - Julie A Di Paolo
- Department of Biology, Gilead Sciences, Inc., 333 Lakeside Dr, Foster City, CA, 94404, USA
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May ME, Pohlmeyer CW, Kwaa AK, Mankowski MC, Bailey JR, Blankson JN. Combined Effects of HLA-B*57/5801 Elite Suppressor CD8+ T Cells and NK Cells on HIV-1 Replication. Front Cell Infect Microbiol 2020; 10:113. [PMID: 32266164 PMCID: PMC7098910 DOI: 10.3389/fcimb.2020.00113] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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: 12/16/2019] [Accepted: 03/02/2020] [Indexed: 11/22/2022] Open
Abstract
Elite controllers or suppressors (ES) are HIV-1 infected individuals who maintain undetectable viral loads without anti-retroviral therapy. The HLA-B*57 allele is overrepresented in ES suggesting a role for HIV-specific CD8+ T cells in immune control. Natural killer (NK) cells also play a role in controlling viral replication, and genetic studies demonstrate that specific combinations of killer cell immunoglobulin-like receptor (KIR) alleles and HLA subtypes including HLA-B*57 correlate with delayed progression to AIDS. While prior studies have shown that both HIV-specific CD8+ T cells and NK cells can inhibit viral replication in vitro, the interaction between these two effector cells has not been studied. We performed in vitro suppression assays using CD8+ T cells and NK cells from HLA-B*57 ES either alone or in combination with each other. We found no evidence of antagonism or synergy between the CD8+ T cells and NK cells, suggesting that they have independent mechanisms of inhibition in vitro. Our data has implications for combined immunotherapy with CD8+ T cells and NK cells in HIV cure strategies.
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Affiliation(s)
- Megan E May
- Department of Medicine, Johns Hopkins Medicine, Baltimore, MD, United States
| | | | - Abena K Kwaa
- Department of Medicine, Johns Hopkins Medicine, Baltimore, MD, United States
| | | | - Justin R Bailey
- Department of Medicine, Johns Hopkins Medicine, Baltimore, MD, United States
| | - Joel N Blankson
- Department of Medicine, Johns Hopkins Medicine, Baltimore, MD, United States
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Veenhuis RT, Kwaa AK, Garliss CC, Latanich R, Salgado M, Pohlmeyer CW, Nobles CL, Gregg J, Scully EP, Bailey JR, Bushman FD, Blankson JN. Long-term remission despite clonal expansion of replication-competent HIV-1 isolates. JCI Insight 2018; 3:122795. [PMID: 30232278 DOI: 10.1172/jci.insight.122795] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [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: 06/11/2018] [Accepted: 08/07/2018] [Indexed: 11/17/2022] Open
Abstract
Clonal expansion of T cells harboring replication-competent virus has recently been demonstrated in patients on suppressive antiretroviral therapy (ART) regimens. However, there has not been direct evidence of this phenomenon in settings of natural control, including in posttreatment controllers who maintain control of viral replication after treatment when ART is discontinued. We present a case of an individual who has had undetectable viral loads for more than 15 years following the cessation of ART. Using near-full-genome sequence analysis, we demonstrate that 9 of 12 replication-competent isolates cultured from this subject were identical and that this identity was maintained 6 months later. A similar pattern of replication-competent virus clonality was seen in a treatment-naive HLA-B*57 elite controller. In both cases, we show that CD8+ T cells are capable of suppressing the replication of the clonally expanded viruses in vitro. Our data suggest that, while clonal expansion of replication-competent virus can present a barrier to viral eradication, these viral isolates remain susceptible to HIV-specific immune responses and can be controlled in patients with long-term suppression of viral replication.
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Affiliation(s)
- Rebecca T Veenhuis
- Department of Medicine and.,Department of Molecular and Comparative Pathobiology, Center for AIDS Research, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | | | | | | | | | | | - Christopher L Nobles
- Department of Microbiology, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - John Gregg
- Department of Microbiology, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | | | | | - Frederic D Bushman
- Department of Microbiology, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - Joel N Blankson
- Department of Medicine and.,Department of Molecular and Comparative Pathobiology, Center for AIDS Research, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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4
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Pohlmeyer CW, Laskey SB, Beck SE, Xu DC, Capoferri AA, Garliss CC, May ME, Livingston A, Lichmira W, Moore RD, Leffell MS, Butler NJ, Thorne JE, Flynn JA, Siliciano RF, Blankson JN. Cross-reactive microbial peptides can modulate HIV-specific CD8+ T cell responses. PLoS One 2018; 13:e0192098. [PMID: 29466365 PMCID: PMC5821448 DOI: 10.1371/journal.pone.0192098] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 01/02/2018] [Indexed: 11/19/2022] Open
Abstract
Heterologous immunity is an important aspect of the adaptive immune response. We hypothesized that this process could modulate the HIV-1-specific CD8+ T cell response, which has been shown to play an important role in HIV-1 immunity and control. We found that stimulation of peripheral blood mononuclear cells (PBMCs) from HIV-1-positive subjects with microbial peptides that were cross-reactive with immunodominant HIV-1 epitopes resulted in dramatic expansion of HIV-1-specific CD8+ T cells. Interestingly, the TCR repertoire of HIV-1-specific CD8+ T cells generated by ex vivo stimulation of PBMCs using HIV-1 peptide was different from that of cells stimulated with cross-reactive microbial peptides in some HIV-1-positive subjects. Despite these differences, CD8+ T cells stimulated with either HIV-1 or cross-reactive peptides effectively suppressed HIV-1 replication in autologous CD4+ T cells. These data suggest that exposure to cross-reactive microbial antigens can modulate HIV-1-specific immunity.
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Affiliation(s)
- Christopher W. Pohlmeyer
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Sarah B. Laskey
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Sarah E. Beck
- Department of Molecular and Comparative Pathobiology. Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Daniel C. Xu
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Adam A. Capoferri
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Caroline C. Garliss
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Megan E. May
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Alison Livingston
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Walt Lichmira
- Spondylitis Association of America, Philadelphia, Pennsylvania United States of America
| | - Richard D. Moore
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - M. Sue Leffell
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Nicholas J. Butler
- Department of Ophthalmology. Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Jennifer E. Thorne
- Department of Ophthalmology. Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - John A. Flynn
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Robert F. Siliciano
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- Howard Hughes Medical Institute, Baltimore, Maryland, United States of America
| | - Joel N. Blankson
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- Department of Molecular and Comparative Pathobiology. Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- * E-mail:
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5
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Henrich TJ, Hatano H, Bacon O, Hogan LE, Rutishauser R, Hill A, Kearney MF, Anderson EM, Buchbinder SP, Cohen SE, Abdel-Mohsen M, Pohlmeyer CW, Fromentin R, Hoh R, Liu AY, McCune JM, Spindler J, Metcalf-Pate K, Hobbs KS, Thanh C, Gibson EA, Kuritzkes DR, Siliciano RF, Price RW, Richman DD, Chomont N, Siliciano JD, Mellors JW, Yukl SA, Blankson JN, Liegler T, Deeks SG. HIV-1 persistence following extremely early initiation of antiretroviral therapy (ART) during acute HIV-1 infection: An observational study. PLoS Med 2017; 14:e1002417. [PMID: 29112956 PMCID: PMC5675377 DOI: 10.1371/journal.pmed.1002417] [Citation(s) in RCA: 157] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Accepted: 09/29/2017] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND It is unknown if extremely early initiation of antiretroviral therapy (ART) may lead to long-term ART-free HIV remission or cure. As a result, we studied 2 individuals recruited from a pre-exposure prophylaxis (PrEP) program who started prophylactic ART an estimated 10 days (Participant A; 54-year-old male) and 12 days (Participant B; 31-year-old male) after infection with peak plasma HIV RNA of 220 copies/mL and 3,343 copies/mL, respectively. Extensive testing of blood and tissue for HIV persistence was performed, and PrEP Participant A underwent analytical treatment interruption (ATI) following 32 weeks of continuous ART. METHODS AND FINDINGS Colorectal and lymph node tissues, bone marrow, cerebral spinal fluid (CSF), plasma, and very large numbers of peripheral blood mononuclear cells (PBMCs) were obtained longitudinally from both participants and were studied for HIV persistence in several laboratories using molecular and culture-based detection methods, including a murine viral outgrowth assay (mVOA). Both participants initiated PrEP with tenofovir/emtricitabine during very early Fiebig stage I (detectable plasma HIV-1 RNA, antibody negative) followed by 4-drug ART intensification. Following peak viral loads, both participants experienced full suppression of HIV-1 plasma viremia. Over the following 2 years, no further HIV could be detected in blood or tissue from PrEP Participant A despite extensive sampling from ileum, rectum, lymph nodes, bone marrow, CSF, circulating CD4+ T cell subsets, and plasma. No HIV was detected from tissues obtained from PrEP Participant B, but low-level HIV RNA or DNA was intermittently detected from various CD4+ T cell subsets. Over 500 million CD4+ T cells were assayed from both participants in a humanized mouse outgrowth assay. Three of 8 mice infused with CD4+ T cells from PrEP Participant B developed viremia (50 million input cells/surviving mouse), but only 1 of 10 mice infused with CD4+ T cells from PrEP Participant A (53 million input cells/mouse) experienced very low level viremia (201 copies/mL); sequence confirmation was unsuccessful. PrEP Participant A stopped ART and remained aviremic for 7.4 months, rebounding with HIV RNA of 36 copies/mL that rose to 59,805 copies/mL 6 days later. ART was restarted promptly. Rebound plasma HIV sequences were identical to those obtained during acute infection by single-genome sequencing. Mathematical modeling predicted that the latent reservoir size was approximately 200 cells prior to ATI and that only around 1% of individuals with a similar HIV burden may achieve lifelong ART-free remission. Furthermore, we observed that lymphocytes expressing the tumor marker CD30 increased in frequency weeks to months prior to detectable HIV-1 RNA in plasma. This study was limited by the small sample size, which was a result of the rarity of individuals presenting during hyperacute infection. CONCLUSIONS We report HIV relapse despite initiation of ART at one of the earliest stages of acute HIV infection possible. Near complete or complete loss of detectable HIV in blood and tissues did not lead to indefinite ART-free HIV remission. However, the small numbers of latently infected cells in individuals treated during hyperacute infection may be associated with prolonged ART-free remission.
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Affiliation(s)
- Timothy J. Henrich
- Division of Experimental Medicine, University of California, San Francisco, California, United States of America
- * E-mail:
| | - Hiroyu Hatano
- Division of HIV, Infectious Diseases and Global Medicine, University of California, San Francisco, California, United States of America
| | - Oliver Bacon
- Division of HIV, Infectious Diseases and Global Medicine, University of California, San Francisco, California, United States of America
- San Francisco Department of Public Health, San Francisco, California, United States of America
| | - Louise E. Hogan
- Division of Experimental Medicine, University of California, San Francisco, California, United States of America
| | - Rachel Rutishauser
- Division of Experimental Medicine, University of California, San Francisco, California, United States of America
- Division of HIV, Infectious Diseases and Global Medicine, University of California, San Francisco, California, United States of America
| | - Alison Hill
- Program for Evolutionary Dynamics, Harvard University, Cambridge, Massachusetts, United States of America
| | - Mary F. Kearney
- HIV Dynamics and Replication Program, Center for Cancer Research, National Cancer Institute, Frederick, Maryland, United States of America
| | - Elizabeth M. Anderson
- HIV Dynamics and Replication Program, Center for Cancer Research, National Cancer Institute, Frederick, Maryland, United States of America
| | - Susan P. Buchbinder
- Division of HIV, Infectious Diseases and Global Medicine, University of California, San Francisco, California, United States of America
- San Francisco Department of Public Health, San Francisco, California, United States of America
| | - Stephanie E. Cohen
- Division of HIV, Infectious Diseases and Global Medicine, University of California, San Francisco, California, United States of America
- San Francisco Department of Public Health, San Francisco, California, United States of America
| | - Mohamed Abdel-Mohsen
- Division of HIV, Infectious Diseases and Global Medicine, University of California, San Francisco, California, United States of America
- The Wistar Institute, Philadelphia, Pennsylvania, United States of America
| | - Christopher W. Pohlmeyer
- Center for AIDS Research, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Remi Fromentin
- Centre de Recherche du CHUM and Department of Microbiology, Infectiology and Immunology, Université de Montréal, Montreal, Quebec, Canada
| | - Rebecca Hoh
- Division of HIV, Infectious Diseases and Global Medicine, University of California, San Francisco, California, United States of America
| | - Albert Y. Liu
- Division of HIV, Infectious Diseases and Global Medicine, University of California, San Francisco, California, United States of America
- San Francisco Department of Public Health, San Francisco, California, United States of America
| | - Joseph M. McCune
- Division of Experimental Medicine, University of California, San Francisco, California, United States of America
| | - Jonathan Spindler
- HIV Dynamics and Replication Program, Center for Cancer Research, National Cancer Institute, Frederick, Maryland, United States of America
| | - Kelly Metcalf-Pate
- Center for AIDS Research, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Kristen S. Hobbs
- Division of Experimental Medicine, University of California, San Francisco, California, United States of America
| | - Cassandra Thanh
- Division of Experimental Medicine, University of California, San Francisco, California, United States of America
| | - Erica A. Gibson
- Division of Experimental Medicine, University of California, San Francisco, California, United States of America
| | - Daniel R. Kuritzkes
- Division of Infectious Diseases, Brigham and Women's Hospital, Boston, Massachusetts, United States of America
- Harvard Medical School, Boston, Massachusetts, United States of America
| | - Robert F. Siliciano
- Division of Infectious Diseases, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- Howard Hughes Medical Institute, Baltimore, Maryland, United States of America
| | - Richard W. Price
- Department of Neurology, University of California, San Francisco, California, United States of America
| | - Douglas D. Richman
- University of California San Diego, La Jolla, California, United States of America
- Veterans Affairs San Diego Healthcare System, San Diego, California, United States of America
| | - Nicolas Chomont
- Centre de Recherche du CHUM and Department of Microbiology, Infectiology and Immunology, Université de Montréal, Montreal, Quebec, Canada
| | | | - John W. Mellors
- Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Steven A. Yukl
- San Francisco Veterans Affairs Medical Center, San Francisco, California, United States of America
- University of California, San Francisco, California, Unites States of America
| | - Joel N. Blankson
- Center for AIDS Research, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Teri Liegler
- Division of HIV, Infectious Diseases and Global Medicine, University of California, San Francisco, California, United States of America
| | - Steven G. Deeks
- Division of HIV, Infectious Diseases and Global Medicine, University of California, San Francisco, California, United States of America
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Kuzmichev YV, Veenhuis RT, Pohlmeyer CW, Garliss CC, Walker-Sperling VEK, Blankson JN. A CD3/CD28 microbead-based HIV-1 viral outgrowth assay. J Virus Erad 2017; 3:85-89. [PMID: 28435692 PMCID: PMC5384271] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
AIMS Latently infected resting CD4 T cells represent a major barrier to HIV-1 eradication efforts. The standard assays used for measuring this reservoir induce activation of resting CD4 T cells with either phytohaemagglutinin (PHA) with irradiated feeder cells, or with anti-CD3 antibodies. We designed a study to compare the sensitivity of a new assay (based on the stimulation of CD4 T cells with anti-CD3 and anti-CD28 coated microbeads) with that of the traditional PHA- and feeder-based viral outgrowth assay. METHODS Resting CD4 T cells from 10 HIV-1-infected patients on suppressive combination antiretroviral therapy (cART) regimens were cultured in the traditional PHA/feeders viral outgrowth assay and the new CD3/CD28 bead-based assay. Flow cytometry was used to assess the kinetics of activation of resting CD4 T cells in the two different assays. RESULTS There was no significant difference in the sensitivity of the two assays. The median frequency of latently infected cells was 0.83 infectious units per million (IUPM) for the PHA/feeders assay and 0.54 IUPM with the CD3/CD28 bead-based assay. However, while virus was obtained from all 10 patients with the traditional PHA/feeders outgrowth assay, no virus was obtained from two of 10 patients with the novel anti-CD3/CD28 bead-based viral outgrowth assay (IUPM < 0.02). CONCLUSION The new CD3/CD28 bead-based assay has comparable sensitivity to the PHA/feeders assay and does not require the addition of feeders, making it a simpler and less labour-intensive alternative to the standard PHA/feeders-based assay.
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Affiliation(s)
- Yury V Kuzmichev
- Department of Molecular Microbiology and Immunology,
Johns Hopkins Bloomberg School of Public Health,
Baltimore,
MD,
USA
| | - Rebecca T Veenhuis
- Center for AIDS Research, Department of Medicine,
Johns Hopkins University School of Medicine,
Baltimore,
MD,
USA
| | - Christopher W Pohlmeyer
- Center for AIDS Research, Department of Medicine,
Johns Hopkins University School of Medicine,
Baltimore,
MD,
USA
| | - Caroline C Garliss
- Center for AIDS Research, Department of Medicine,
Johns Hopkins University School of Medicine,
Baltimore,
MD,
USA
| | - Victoria EK Walker-Sperling
- Center for AIDS Research, Department of Medicine,
Johns Hopkins University School of Medicine,
Baltimore,
MD,
USA
| | - Joel N Blankson
- Center for AIDS Research, Department of Medicine,
Johns Hopkins University School of Medicine,
Baltimore,
MD,
USA,Corresponding author: Joel N. Blankson,
Department of Medicine,
Johns Hopkins University School of Medicine,
855 N Wolfe Street, Rangos 552,
Baltimore,
MD21205,
USA
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7
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Walker-Sperling VE, Pohlmeyer CW, Veenhuis RT, May M, Luna KA, Kirkpatrick AR, Laeyendecker O, Cox AL, Carrington M, Bailey JR, Arduino RC, Blankson JN. Factors Associated With the Control of Viral Replication and Virologic Breakthrough in a Recently Infected HIV-1 Controller. EBioMedicine 2017; 16:141-149. [PMID: 28159573 PMCID: PMC5474502 DOI: 10.1016/j.ebiom.2017.01.034] [Citation(s) in RCA: 21] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 01/18/2017] [Accepted: 01/25/2017] [Indexed: 01/08/2023] Open
Abstract
HIV-1 controllers are patients who control HIV-1 viral replication without antiretroviral therapy. Control is achieved very early in the course of infection, but the mechanisms through which viral replication is restricted are not fully understood. We describe a patient who presented with acute HIV-1 infection and was found to have an HIV-1 RNA level of < 100 copies/mL. She did not have any known protective HLA alleles, but significant immune activation of CD8 + T cells and natural killer (NK) cells was present, and both cell types inhibited viral replication. Virus cultured from this patient replicated as well in vitro as virus isolated from her partner, a patient with AIDS who was the source of transmission. Virologic breakthrough occurred 9 months after her initial presentation and was associated with an increase in CD4 + T cell activation levels and a significant decrease in NK cell inhibitory capacity. Remarkably, CD8 + T cell inhibitory capacity was preserved and there were no new escape mutations in targeted Gag epitopes. These findings suggest that fully replication-competent virus can be controlled in acute HIV-1 infection in some patients without protective HLA alleles and that NK cell responses may contribute to this early control of viral replication. We show that an HIV-1 controller was infected with pathogenic virus yet maintained low viral loads during primary infection. She had activated NK cells and CD8+ T cells and both cell types suppressed HIV-1 replication shortly after infection. She eventually lost control of viral replication, and this was associated with a reduction in NK cell suppressive activity.
HIV-1 controllers are patients who control the virus without HIV-1 medications. These patients may teach us how to design a vaccine against HIV-1. Little is known about how the virus is controlled in the early phase of infection in these patients. Here we show that a recently infected HIV-1 controller had a strong natural killer cell response to the virus. Interestingly, she lost control of the virus 9 months later and her natural killer cell response to the virus was diminished. Our work suggests that natural killer cells may have contributed to viral control in the early phase of infection.
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Affiliation(s)
- Victoria E Walker-Sperling
- Department of Medicine, Center for AIDS Research, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Christopher W Pohlmeyer
- Department of Medicine, Center for AIDS Research, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Rebecca T Veenhuis
- Department of Medicine, Center for AIDS Research, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Megan May
- Department of Medicine, Center for AIDS Research, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Krystle A Luna
- Department of Medicine, University of Texas MD Anderson Cancer Center, Austin, TX, USA
| | - Allison R Kirkpatrick
- Laboratory of Immunoregulation, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, NIH, Baltimore, MD, USA
| | - Oliver Laeyendecker
- Department of Medicine, Center for AIDS Research, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Laboratory of Immunoregulation, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, NIH, Baltimore, MD, USA
| | - Andrea L Cox
- Department of Medicine, Center for AIDS Research, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Mary Carrington
- Cancer and Inflammation Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, MD, USA; Ragon Institute of Massachusetts General Hospital, Massachusetts Institute of Technology and Harvard University, Cambridge, MA, USA
| | - Justin R Bailey
- Department of Medicine, Center for AIDS Research, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Roberto C Arduino
- Department of Internal Medicine, Division of Infectious Diseases, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Joel N Blankson
- Department of Medicine, Center for AIDS Research, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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8
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Affiliation(s)
- Christopher W Pohlmeyer
- Center for AIDS Research, Department of Medicine, Johns Hopkins University School of Medicine, 855 N. Wolfe Street, Rangos 552, Baltimore, MD 21205, USA
| | - Victoria E Walker-Sperling
- Center for AIDS Research, Department of Medicine, Johns Hopkins University School of Medicine, 855 N. Wolfe Street, Rangos 552, Baltimore, MD 21205, USA
| | - Joel N Blankson
- Center for AIDS Research, Department of Medicine, Johns Hopkins University School of Medicine, 855 N. Wolfe Street, Rangos 552, Baltimore, MD 21205, USA
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Walker-Sperling VE, Pohlmeyer CW, Tarwater PM, Blankson JN. The Effect of Latency Reversal Agents on Primary CD8+ T Cells: Implications for Shock and Kill Strategies for Human Immunodeficiency Virus Eradication. EBioMedicine 2016; 8:217-229. [PMID: 27428432 PMCID: PMC4919475 DOI: 10.1016/j.ebiom.2016.04.019] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [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: 01/25/2016] [Revised: 04/15/2016] [Accepted: 04/15/2016] [Indexed: 11/16/2022] Open
Abstract
Shock and kill strategies involving the use of small molecules to induce viral transcription in resting CD4 + T cells (shock) followed by immune mediated clearance of the reactivated cells (kill), have been proposed as a method of eliminating latently infected CD4 + T cells. The combination of the histone deacetylase (HDAC) inhibitor romidepsin and protein kinase C (PKC) agonist bryostatin-1 is very effective at reversing latency in vitro. However, we found that primary HIV-1 specific CD8 + T cells were not able to eliminate autologous resting CD4 + T cells that had been reactivated with these drugs. We tested the hypothesis that the drugs affected primary CD8 + T cell function and found that both agents had inhibitory effects on the suppressive capacity of HIV-specific CD8 + T cells from patients who control viral replication without antiretroviral therapy (elite suppressors/controllers). The inhibitory effect was additive and multi-factorial in nature. These inhibitory effects were not seen with prostratin, another PKC agonist, either alone or in combination with JQ1, a bromodomain-containing protein 4 inhibitor. Our results suggest that because of their adverse effects on primary CD8 + T cells, some LRAs may cause immune-suppression and therefore should be used with caution in shock and kill strategies. Latency reversal agents can reactivate HIV-1 expression in latently infected cells. CD8 T cells from HIV-1 infected patients did not eliminate reactivated latently infected cells. This finding can partially be explained by our data showing that latency reversal agents affect the function of CD8 + T cells.
Latently infected CD4 + T cells are a major barrier to the cure of HIV-1 infection. One strategy of eliminating these cells involves inducing viral transcription with small molecules (latency reversal agents or LRAs) which would result in the recognition of these cells by the immune system. We show here that CD8 + T cells were not able to eliminate CD4 + T cells from HIV-1-infected patients following stimulation with LRAs. Our data suggests that this may be partially because some LRAs affect the function of CD8 + T cells. Thus it will be critical to select LRAs that do not cause immune suppression.
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Affiliation(s)
| | - Christopher W Pohlmeyer
- Center for AIDS Research, Department of Medicine, Johns Hopkins University School of Medicine, USA
| | - Patrick M Tarwater
- Division of Biostatistics and Epidemiology, Paul L. Foster School of Medicine, El Paso, TX, USA
| | - Joel N Blankson
- Center for AIDS Research, Department of Medicine, Johns Hopkins University School of Medicine, USA.
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Durand CM, Buckheit RW, Salgado M, Pohlmeyer CW, Walker-Sperling VE, Hegarty RW, Ambinder RF, Blankson JN. A Human Immunodeficiency Virus Controller With a Large Population of CD4(+)CD8(+) Double-Positive T Cells. Open Forum Infect Dis 2015; 2:ofv039. [PMID: 26380339 PMCID: PMC4567082 DOI: 10.1093/ofid/ofv039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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: 01/06/2015] [Accepted: 03/06/2015] [Indexed: 01/30/2023] Open
Abstract
Human immunodeficiency virus (HIV) controllers are patients who control viral replication without antiretroviral therapy. We present the case of an HIV controller who had CD4 and CD8 coexpressed on 40% of his T cells. Although a recent study found that double-positive T cells had superior antiviral capacity in HIV-1 controllers, in this case, the CD4(+)CD8(+) T cells did not have strong antiviral activity.
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Affiliation(s)
- Christine M Durand
- Departments of Medicine ; Oncology , Johns Hopkins School of Medicine , Baltimore, Maryland
| | | | | | | | | | | | - Richard F Ambinder
- Departments of Medicine ; Oncology , Johns Hopkins School of Medicine , Baltimore, Maryland
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Metcalf Pate KA, Pohlmeyer CW, Walker-Sperling VE, Foote JB, Najarro KM, Cryer CG, Salgado M, Gama L, Engle EL, Shirk EN, Queen SE, Chioma S, Vermillion MS, Bullock B, Li M, Lyons CE, Adams RJ, Zink MC, Clements JE, Mankowski JL, Blankson JN. A Murine Viral Outgrowth Assay to Detect Residual HIV Type 1 in Patients With Undetectable Viral Loads. J Infect Dis 2015; 212:1387-96. [PMID: 25883388 DOI: 10.1093/infdis/jiv230] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [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: 02/08/2015] [Accepted: 04/08/2015] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Sensitive assays are needed for detection of residual human immunodeficiency virus (HIV) in patients with undetectable plasma viral loads to determine whether eradication strategies are effective. The gold standard quantitative viral outgrowth assay (QVOA) underestimates the magnitude of the viral reservoir. We sought to determine whether xenograft of leukocytes from HIV type 1 (HIV)-infected patients with undetectable plasma viral loads into immunocompromised mice would result in viral amplification. METHODS Peripheral blood mononuclear cells or purified CD4(+) T cells from HIV or simian immunodeficiency virus (SIV)-infected subjects with undetectable plasma viral loads were adoptively transferred into NOD.Cg-Prkdc(scid)Il2rg(tm1Wjl)/SzJ (NSG) mice. The mice were monitored for viremia following depletion of human CD8(+) T cells to minimize antiviral activity. In some cases, humanized mice were also treated with activating anti-CD3 antibody. RESULTS With this murine viral outgrowth assay (MVOA), we successfully amplified replication-competent HIV or SIV from all subjects tested, including 5 HIV-positive patients receiving suppressive antiretroviral therapy (ART) and 6 elite controllers or suppressors who were maintaining undetectable viral loads without ART, including an elite suppressor from whom we were unable to recover virus by QVOA. CONCLUSIONS Our results suggest that the MVOA has the potential to serve as a powerful tool to identify residual HIV in patients with undetectable viral loads.
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Affiliation(s)
| | - Christopher W Pohlmeyer
- Department of Medicine, Center for AIDS Research, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Victoria E Walker-Sperling
- Department of Medicine, Center for AIDS Research, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | | | | | - Catherine G Cryer
- Department of Molecular and Comparative Pathobiology University of Pennsylvania School of Veterinary Medicine, Philadelphia
| | - Maria Salgado
- Department of Medicine, Center for AIDS Research, Johns Hopkins University School of Medicine, Baltimore, Maryland Institute IrsiCaixa, Institut d'Investigació en Ciències de la Salut Germans Trias i Pujol, Universitat Autònoma de Barcelona, Badalona, Spain
| | - Lucio Gama
- Department of Molecular and Comparative Pathobiology
| | | | - Erin N Shirk
- Department of Molecular and Comparative Pathobiology
| | | | - Stanley Chioma
- Department of Medicine, Center for AIDS Research, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | | | | | - Ming Li
- Department of Molecular and Comparative Pathobiology
| | - Claire E Lyons
- Department of Molecular and Comparative Pathobiology Cummings School of Veterinary Medicine at Tufts University, North Grafton, Massachusetts
| | | | | | | | | | - Joel N Blankson
- Department of Medicine, Center for AIDS Research, Johns Hopkins University School of Medicine, Baltimore, Maryland
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Pohlmeyer CW, Buckheit RW, Siliciano RF, Blankson JN. CD8+ T cells from HLA-B*57 elite suppressors effectively suppress replication of HIV-1 escape mutants. Retrovirology 2013; 10:152. [PMID: 24330837 PMCID: PMC3878989 DOI: 10.1186/1742-4690-10-152] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [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: 10/11/2013] [Accepted: 12/03/2013] [Indexed: 11/30/2022] Open
Abstract
Background Elite Controllers or Suppressors (ES) are HIV-1 positive individuals who maintain plasma viral loads below the limit of detection of standard clinical assays without antiretroviral therapy. Multiple lines of evidence suggest that the control of viral replication in these patients is due to a strong and specific cytotoxic T lymphocyte (CTL) response. The ability of CD8+ T cells to control HIV-1 replication is believed to be impaired by the development of escape mutations. Surprisingly, viruses amplified from the plasma of ES have been shown to contain multiple escape mutations, and it is not clear how immunologic control is maintained in the face of virologic escape. Results We investigated the effect of escape mutations within HLA*B-57-restricted Gag epitopes on the CD8+ T cell mediated suppression of HIV-1 replication. Using site directed mutagenesis, we constructed six NL4-3 based viruses with canonical escape mutations in one to three HLA*B-57-restricted Gag epitopes. Interestingly, similar levels of CTL-mediated suppression of replication in autologous primary CD4+ T cells were observed for all of the escape mutants. Intracellular cytokine staining was performed in order to determine the mechanisms involved in the suppression of the escape variants. While low baseline CD8+ T cells responses to wild type and escape variant peptides were seen, stimulation of PBMC with either wild type or escape variant peptides resulted in increased IFN-γ and perforin expression. Conclusions These data presented demonstrate that CD8+ T cells from ES are capable of suppressing replication of virus harboring escape mutations in HLA-B*57-restricted Gag epitopes. Additionally, our data suggest that ES CD8+ T cells are capable of generating effective de novo responses to escape mutants.
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Affiliation(s)
| | | | | | - Joel N Blankson
- Department of Medicine, Johns Hopkins University School of Medicine, 733 N, Broadway, BRB 880, Baltimore, MD 21205, USA.
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