1
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Lin H, Chen Y, Abror-Lacks G, Price M, Morris A, Sun J, Palella F, Chew KW, Brown TT, Rinaldo CR, Peddada SD. Sexual behavior is linked to changes in gut microbiome and systemic inflammation that lead to HIV-1 infection in men who have sex with men. Commun Biol 2024; 7:1145. [PMID: 39277660 PMCID: PMC11401892 DOI: 10.1038/s42003-024-06816-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Accepted: 08/30/2024] [Indexed: 09/17/2024] Open
Abstract
Pathogenic changes in gut microbial composition precede the onset of HIV-1 infection in men who have sex with men (MSM). This process is associated with increased levels of systemic inflammatory biomarkers and risk for AIDS development. Using mediation analysis framework, in this report we link the effects of unprotected receptive intercourse among MSM prior to primary HIV-1 infection to higher levels of proinflammatory cytokines sCD14 and sCD163 in plasma and a significant decrease in the abundance of A. muciniphila, B. caccae, B. fragilis, B. uniformis, Bacteroides spp., Butyricimonas spp., and Odoribacter spp., and a potential increase in the abundance of Dehalobacterium spp. and Methanobrevibacter spp. in stools of MSM with the highest number of sexual partners. These differences in microbiota, together with a reduction in the pairwise correlations among commensal and short-chain fatty acid-producing bacteria with a number of sexual partners, support an increase in gut dysbiosis with the number of sexual partners. These results demonstrate the interconnectedness of sexual behavior, immune response, and microbiota composition, notably among MSM participating in high-risk sexual behaviors.
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Affiliation(s)
- Huang Lin
- Biostatistics and Computational Biology, National Institute of Environmental Health Sciences (NIH), Research Triangle Park, NC, USA
- Department of Epidemiology and Biostatistics, University of Maryland, College Park, MD, USA
| | - Yue Chen
- Division of Infectious Diseases, Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Grace Abror-Lacks
- Department of Infectious Diseases and Microbiology, School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - Meaghan Price
- Department of Infectious Diseases and Microbiology, School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - Alison Morris
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Jing Sun
- Department of Epidemiology, The Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Frank Palella
- Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Kara W Chew
- School of Medicine, University of California at Los Angeles, Los Angeles, CA, USA
| | - Todd T Brown
- Department of Medicine, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Charles R Rinaldo
- Division of Infectious Diseases, Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA.
| | - Shyamal D Peddada
- Biostatistics and Computational Biology, National Institute of Environmental Health Sciences (NIH), Research Triangle Park, NC, USA.
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2
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Mahomed S. Broadly neutralizing antibodies for HIV prevention: a comprehensive review and future perspectives. Clin Microbiol Rev 2024; 37:e0015222. [PMID: 38687039 PMCID: PMC11324036 DOI: 10.1128/cmr.00152-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024] Open
Abstract
SUMMARYThe human immunodeficiency virus (HIV) epidemic remains a formidable global health concern, with 39 million people living with the virus and 1.3 million new infections reported in 2022. Despite anti-retroviral therapy's effectiveness in pre-exposure prophylaxis, its global adoption is limited. Broadly neutralizing antibodies (bNAbs) offer an alternative strategy for HIV prevention through passive immunization. Historically, passive immunization has been efficacious in the treatment of various diseases ranging from oncology to infectious diseases. Early clinical trials suggest bNAbs are safe, tolerable, and capable of reducing HIV RNA levels. Although challenges such as bNAb resistance have been noted in phase I trials, ongoing research aims to assess the additive or synergistic benefits of combining multiple bNAbs. Researchers are exploring bispecific and trispecific antibodies, and fragment crystallizable region modifications to augment antibody efficacy and half-life. Moreover, the potential of other antibody isotypes like IgG3 and IgA is under investigation. While promising, the application of bNAbs faces economic and logistical barriers. High manufacturing costs, particularly in resource-limited settings, and logistical challenges like cold-chain requirements pose obstacles. Preliminary studies suggest cost-effectiveness, although this is contingent on various factors like efficacy and distribution. Technological advancements and strategic partnerships may mitigate some challenges, but issues like molecular aggregation remain. The World Health Organization has provided preferred product characteristics for bNAbs, focusing on optimizing their efficacy, safety, and accessibility. The integration of bNAbs in HIV prophylaxis necessitates a multi-faceted approach, considering economic, logistical, and scientific variables. This review comprehensively covers the historical context, current advancements, and future avenues of bNAbs in HIV prevention.
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Affiliation(s)
- Sharana Mahomed
- Centre for the AIDS
Programme of Research in South Africa (CAPRISA), Doris Duke Medical
Research Institute, Nelson R Mandela School of Medicine, University of
KwaZulu-Natal, Durban,
South Africa
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3
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Manickam C, Upadhyay AA, Woolley G, Kroll KW, Terry K, Broedlow CA, Klatt NR, Bosinger SE, Reeves RK. Natural killer-like B cells are a distinct but infrequent innate immune cell subset modulated by SIV infection of rhesus macaques. PLoS Pathog 2024; 20:e1012223. [PMID: 38739675 PMCID: PMC11115201 DOI: 10.1371/journal.ppat.1012223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 05/23/2024] [Accepted: 04/25/2024] [Indexed: 05/16/2024] Open
Abstract
Natural killer-like B (NKB) cells are unique innate immune cells expressing both natural killer (NK) and B cell receptors. As first responders to infection, they secrete IL-18 to induce a critical cascade of innate and adaptive immune cell infiltration and activation. However, limited research exists on the role of NKB cells in homeostasis and infection, largely due to incomplete and erroneous evaluations. To fill this knowledge gap, we investigated the expression of signaling and trafficking proteins, and the in situ localization and transcriptome of naïve NKB cells compared to conventionally-defined NK and B cells, as well as modulations of these cells in SIV infection. Intracellular signaling proteins and trafficking markers were expressed differentially on naïve NKB cells, with high expression of CD62L and Syk, and low expression of CD69, α4β7, FcRg, Zap70, and CD3z, findings which were more similar to B cells than NK cells. CD20+NKG2a/c+ NKB cells were identified in spleen, mesenteric lymph nodes (MLN), colon, jejunum, and liver of naïve rhesus macaques (RM) via tissue imaging, with NKB cell counts concentrated in spleen and MLN. For the first time, single cell RNA sequencing (scRNAseq), including B cell receptor (BCR) sequencing, of sorted NKB cells confirmed that NKB cells are unique. Transcriptomic analysis of naïve splenic NKB cells by scRNAseq showed that NKB cells undergo somatic hypermutation and express Ig receptors, similar to B cells. While only 15% of sorted NKB cells showed transcript expression of both KLRC1 (NKG2A) and MS4A1 (CD20) genes, only 5% of cells expressed KLRC1, MS4A1, and IgH/IgL transcripts. We observed expanded NKB frequencies in RM gut and buccal mucosa as early as 14 and 35 days post-SIV infection, respectively. Further, mucosal and peripheral NKB cells were associated with colorectal cytokine milieu and oral microbiome changes, respectively. Our studies indicate that NKB cells gated on CD3-CD14-CD20+NKG2A/C+ cells were inclusive of transcriptomically conventional B and NK cells in addition to true NKB cells, confounding accurate phenotyping and frequency recordings that could only be resolved using genomic techniques. Although NKB cells were clearly elevated during SIV infection and associated with inflammatory changes during infection, further interrogation is necessary to acurately identify the true phenotype and significance of NKB cells in infection and inflammation.
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Affiliation(s)
- Cordelia Manickam
- Division of Innate and Comparative Immunology, Center for Human Systems Immunology, Duke University, Durham, North Carolina, United States of America
- Department of Surgery, Duke University, Durham, North Carolina, United States of America
| | - Amit A. Upadhyay
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, Georgia, United States of America
- Division of Microbiology and Immunology, Emory National Primate Research Center, Atlanta, Georgia, United States of America
| | - Griffin Woolley
- Division of Innate and Comparative Immunology, Center for Human Systems Immunology, Duke University, Durham, North Carolina, United States of America
- Department of Surgery, Duke University, Durham, North Carolina, United States of America
| | - Kyle W. Kroll
- Division of Innate and Comparative Immunology, Center for Human Systems Immunology, Duke University, Durham, North Carolina, United States of America
- Department of Surgery, Duke University, Durham, North Carolina, United States of America
| | - Karen Terry
- Division of Innate and Comparative Immunology, Center for Human Systems Immunology, Duke University, Durham, North Carolina, United States of America
- Department of Surgery, Duke University, Durham, North Carolina, United States of America
| | - Courtney A. Broedlow
- Division of Surgical Outcomes and Precision Medicine Research, Department of Surgery, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Nichole R. Klatt
- Division of Surgical Outcomes and Precision Medicine Research, Department of Surgery, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Steven E. Bosinger
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, Georgia, United States of America
- Division of Microbiology and Immunology, Emory National Primate Research Center, Atlanta, Georgia, United States of America
| | - R. Keith Reeves
- Division of Innate and Comparative Immunology, Center for Human Systems Immunology, Duke University, Durham, North Carolina, United States of America
- Department of Surgery, Duke University, Durham, North Carolina, United States of America
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4
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Elliott Williams M, Hardnett FP, Sheth AN, Wein AN, Li ZRT, Radzio-Basu J, Dinh C, Haddad LB, Collins EMB, Ofotokun I, Antia R, Scharer CD, Garcia-Lerma JG, Kohlmeier JE, Swaims-Kohlmeier A. The menstrual cycle regulates migratory CD4 T-cell surveillance in the female reproductive tract via CCR5 signaling. Mucosal Immunol 2024; 17:41-53. [PMID: 37866719 PMCID: PMC10990418 DOI: 10.1016/j.mucimm.2023.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 10/16/2023] [Accepted: 10/16/2023] [Indexed: 10/24/2023]
Abstract
Despite their importance for immunity against sexually transmitted infections, the composition of female reproductive tract (FRT) memory T-cell populations in response to changes within the local tissue environment under the regulation of the menstrual cycle remains poorly defined. Here, we show that in humans and pig-tailed macaques, the cycle determines distinct clusters of differentiation 4 T-cell surveillance behaviors by subsets corresponding to migratory memory (TMM) and resident memory T cells. TMM displays tissue-itinerant trafficking characteristics, restricted distribution within the FRT microenvironment, and distinct effector responses to infection. Gene pathway analysis by RNA sequencing identified TMM-specific enrichment of genes involved in hormonal regulation and inflammatory responses. FRT T-cell subset fluctuations were discovered that synchronized to cycle-driven CCR5 signaling. Notably, oral administration of a CCR5 antagonist drug blocked TMM trafficking. Taken together, this study provides novel insights into the dynamic nature of FRT memory CD4 T cells and identifies the menstrual cycle as a key regulator of immune surveillance at the site of STI pathogen exposure.
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Affiliation(s)
- M Elliott Williams
- Department of Microbiology & Immunology, Emory University School of Medicine, Atlanta, GA, USA
| | - Felica P Hardnett
- Division of HIV Prevention, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Anandi N Sheth
- Department of Medicine, Division of Infectious Diseases, Emory University School of Medicine and Grady Health System, Atlanta, GA, USA
| | - Alexander N Wein
- Department of Microbiology & Immunology, Emory University School of Medicine, Atlanta, GA, USA
| | - Zheng-Rong Tiger Li
- Department of Microbiology & Immunology, Emory University School of Medicine, Atlanta, GA, USA
| | - Jessica Radzio-Basu
- Division of HIV Prevention, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Chuong Dinh
- Division of HIV Prevention, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Lisa B Haddad
- Department of Gynecology & Obstetrics, Emory University School of Medicine, Atlanta, GA, USA
| | - Elizabeth M B Collins
- Department of Gynecology & Obstetrics, Emory University School of Medicine, Atlanta, GA, USA
| | - Igho Ofotokun
- Department of Medicine, Division of Infectious Diseases, Emory University School of Medicine and Grady Health System, Atlanta, GA, USA
| | - Rustom Antia
- Department of Biology, Emory University, Atlanta, GA, USA
| | - Christopher D Scharer
- Department of Microbiology & Immunology, Emory University School of Medicine, Atlanta, GA, USA
| | - J Gerardo Garcia-Lerma
- Division of HIV Prevention, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Jacob E Kohlmeier
- Department of Microbiology & Immunology, Emory University School of Medicine, Atlanta, GA, USA
| | - Alison Swaims-Kohlmeier
- Department of Microbiology & Immunology, Emory University School of Medicine, Atlanta, GA, USA; Division of HIV Prevention, Centers for Disease Control and Prevention, Atlanta, GA, USA; Department of Gynecology & Obstetrics, Emory University School of Medicine, Atlanta, GA, USA.
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5
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Lin H, Chen Y, Abror G, Price M, Morris A, Sun J, Palella F, Chew KW, Brown TT, Rinaldo CR, Peddada SD. The effect of sexual behavior on HIV-1 seroconversion is mediated by the gut microbiome and proinflammatory cytokines. RESEARCH SQUARE 2024:rs.3.rs-3868545. [PMID: 38343862 PMCID: PMC10854284 DOI: 10.21203/rs.3.rs-3868545/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/27/2024]
Abstract
The association between HIV-1 seroconversion and gut dysbiosis is well documented, and its association with sexual activity is also widely recognized. However, it is not known whether the gut dysbiosis mediates the effects of high-risk sexual behavior on HIV-1 seroconversion. In this report we focused on men who engaged in high-risk sexual behavior where they had receptive anal intercourse with multiple men. We demonstrate that proinflammatory cytokines, sCD14 and sCD163, and gut microbiota mediate the effects of this high-risk sexual behavior on subsequent HIV seroconversion. We discovered changes in the gut microbial ecology, prior to seroconversion, both in terms of the composition as well as inter-relationships among the commensal species. Furthermore, these changes correlate with future HIV seroconversion. Specifically, as the number of sexual partners increased, we discovered in a "dose-response" manner, a decrease in the abundance of commensal and short-chain fatty acid-producing species, A. muciniphila, B. caccae, B. fragilis, B. uniformis, Bacteroides spp., Butyricimonas spp., and Odoribacter spp, and an increase in proinflammatory species Dehalobacterium spp. and Methanobrevibacter spp. These changes were also observed among subsequent HIV seroconverters. Interestingly, we also discovered a reduction in correlations among these commensal and short-chain fatty acid producing bacteria in a "dose-response" manner with the number of sexual partners. Our mediation analysis not only provides a conceptual model for the disease process but also provides clues for future clinical interventions that will manipulate the gut microbiota to treat high-risk subjects to prevent HIV seroconversion.
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Affiliation(s)
- Huang Lin
- Co-first authors
- Biostatistics and Computational Biology, National Institute of Environmental Health Sciences (NIH), Research Triangle Park, NC USA
| | - Yue Chen
- Co-first authors
- Division of Infectious Diseases, Department of Medicine, University of Pittsburgh, Pittsburgh, PA USA
| | - Grace Abror
- Department of Infectious Diseases and Microbiology, School of Public Health, University of Pittsburgh, Pittsburgh, PA USA
| | - Meaghan Price
- Department of Infectious Diseases and Microbiology, School of Public Health, University of Pittsburgh, Pittsburgh, PA USA
| | - Alison Morris
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA USA
| | - Jing Sun
- Department of Epidemiology, The Johns Hopkins Bloomberg School of Public Health, Baltimore, MD USA
| | - Frank Palella
- Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL USA
| | - Kara W Chew
- School of Medicine, University of California at Los Angeles, Los Angeles, CA, USA
| | - Todd T Brown
- Department of Epidemiology, The Johns Hopkins Bloomberg School of Public Health, Baltimore, MD USA
| | - Charles R Rinaldo
- Co-senior authors
- Division of Infectious Diseases, Department of Medicine, University of Pittsburgh, Pittsburgh, PA USA
| | - Shyamal D Peddada
- Co-senior authors
- Biostatistics and Computational Biology, National Institute of Environmental Health Sciences (NIH), Research Triangle Park, NC USA
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6
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Hokello J, Tyagi K, Owor RO, Sharma AL, Bhushan A, Daniel R, Tyagi M. New Insights into HIV Life Cycle, Th1/Th2 Shift during HIV Infection and Preferential Virus Infection of Th2 Cells: Implications of Early HIV Treatment Initiation and Care. Life (Basel) 2024; 14:104. [PMID: 38255719 PMCID: PMC10817636 DOI: 10.3390/life14010104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 01/05/2024] [Accepted: 01/07/2024] [Indexed: 01/24/2024] Open
Abstract
The theory of immune regulation involves a homeostatic balance between T-helper 1 (Th1) and T-helper 2 (Th2) responses. The Th1 and Th2 theories were introduced in 1986 as a result of studies in mice, whereby T-helper cell subsets were found to direct different immune response pathways. Subsequently, this hypothesis was extended to human immunity, with Th1 cells mediating cellular immunity to fight intracellular pathogens, while Th2 cells mediated humoral immunity to fight extracellular pathogens. Several disease conditions were later found to tilt the balance between Th1 and Th2 immune response pathways, including HIV infection, but the exact mechanism for the shift from Th1 to Th2 cells was poorly understood. This review provides new insights into the molecular biology of HIV, wherein the HIV life cycle is discussed in detail. Insights into the possible mechanism for the Th1 to Th2 shift during HIV infection and the preferential infection of Th2 cells during the late symptomatic stage of HIV disease are also discussed.
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Affiliation(s)
- Joseph Hokello
- Department of Biology, Faculty of Science and Education, Busitema University, Tororo P.O. Box 236, Uganda;
| | - Kratika Tyagi
- Department of Biotechnology, Banasthali Vidyapith, Jaipur 304022, India;
| | - Richard Oriko Owor
- Department of Chemistry, Faculty of Science and Education, Busitema University, Tororo P.O. Box 236, Uganda;
| | - Adhikarimayum Lakhikumar Sharma
- Center for Translational Medicine, Thomas Jefferson University, 1020 Locust Street, Philadelphia, PA 19107, USA; (A.L.S.); (R.D.)
| | - Alok Bhushan
- Department of Pharmaceutical Sciences, Jefferson College of Pharmacy, Thomas Jefferson University, Philadelphia, PA 19107, USA;
| | - Rene Daniel
- Center for Translational Medicine, Thomas Jefferson University, 1020 Locust Street, Philadelphia, PA 19107, USA; (A.L.S.); (R.D.)
| | - Mudit Tyagi
- Center for Translational Medicine, Thomas Jefferson University, 1020 Locust Street, Philadelphia, PA 19107, USA; (A.L.S.); (R.D.)
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7
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Planchais C, Molinos-Albert LM, Rosenbaum P, Hieu T, Kanyavuz A, Clermont D, Prazuck T, Lefrou L, Dimitrov JD, Hüe S, Hocqueloux L, Mouquet H. HIV-1 treatment timing shapes the human intestinal memory B-cell repertoire to commensal bacteria. Nat Commun 2023; 14:6326. [PMID: 37816704 PMCID: PMC10564866 DOI: 10.1038/s41467-023-42027-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 09/28/2023] [Indexed: 10/12/2023] Open
Abstract
HIV-1 infection causes severe alterations of gut mucosa, microbiota and immune system, which can be curbed by early antiretroviral therapy. Here, we investigate how treatment timing affects intestinal memory B-cell and plasmablast repertoires of HIV-1-infected humans. We show that only class-switched memory B cells markedly differ between subjects treated during the acute and chronic phases of infection. Intestinal memory B-cell monoclonal antibodies show more prevalent polyreactive and commensal bacteria-reactive clones in late- compared to early-treated individuals. Mirroring this, serum IgA polyreactivity and commensal-reactivity are strongly increased in late-treated individuals and correlate with intestinal permeability and systemic inflammatory markers. Polyreactive blood IgA memory B cells, many of which egressed from the gut, are also substantially enriched in late-treated individuals. Our data establish gut and systemic B-cell polyreactivity to commensal bacteria as hallmarks of chronic HIV-1 infection and suggest that initiating treatment early may limit intestinal B-cell abnormalities compromising HIV-1 humoral response.
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Affiliation(s)
- Cyril Planchais
- Humoral Immunology Unit, Institut Pasteur, Université Paris Cité, INSERM U1222, F-75015, Paris, France
| | - Luis M Molinos-Albert
- Humoral Immunology Unit, Institut Pasteur, Université Paris Cité, INSERM U1222, F-75015, Paris, France
- ISGlobal, Hospital Clínic-Universitat de Barcelona, 08036, Barcelona, Spain
| | - Pierre Rosenbaum
- Humoral Immunology Unit, Institut Pasteur, Université Paris Cité, INSERM U1222, F-75015, Paris, France
| | - Thierry Hieu
- Humoral Immunology Unit, Institut Pasteur, Université Paris Cité, INSERM U1222, F-75015, Paris, France
| | - Alexia Kanyavuz
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, 75006, Paris, France
| | - Dominique Clermont
- Collection of the Institut Pasteur, Institut Pasteur, Université Paris Cité, 75015, Paris, France
| | - Thierry Prazuck
- Service des Maladies Infectieuses et Tropicales, CHR d'Orléans-La Source, 45067, Orléans, France
| | - Laurent Lefrou
- Service d'Hépato-Gastro-Entérologie, CHR d'Orléans-La Source, 45067, Orléans, France
| | - Jordan D Dimitrov
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, 75006, Paris, France
| | - Sophie Hüe
- INSERM U955-Équipe 16, Université Paris-Est Créteil, Faculté de Médecine, 94000, Créteil, France
| | - Laurent Hocqueloux
- Service des Maladies Infectieuses et Tropicales, CHR d'Orléans-La Source, 45067, Orléans, France
| | - Hugo Mouquet
- Humoral Immunology Unit, Institut Pasteur, Université Paris Cité, INSERM U1222, F-75015, Paris, France.
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8
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Masenga SK, Mweene BC, Luwaya E, Muchaili L, Chona M, Kirabo A. HIV-Host Cell Interactions. Cells 2023; 12:1351. [PMID: 37408185 DOI: 10.3390/cells12101351] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 05/04/2023] [Accepted: 05/05/2023] [Indexed: 07/07/2023] Open
Abstract
The development of antiretroviral drugs (ARVs) was a great milestone in the management of HIV infection. ARVs suppress viral activity in the host cell, thus minimizing injury to the cells and prolonging life. However, an effective treatment has remained elusive for four decades due to the successful immune evasion mechanisms of the virus. A thorough understanding of the molecular interaction of HIV with the host cell is essential in the development of both preventive and curative therapies for HIV infection. This review highlights several inherent mechanisms of HIV that promote its survival and propagation, such as the targeting of CD4+ lymphocytes, the downregulation of MHC class I and II, antigenic variation and an envelope complex that minimizes antibody access, and how they collaboratively render the immune system unable to mount an effective response.
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Affiliation(s)
- Sepiso K Masenga
- HAND Research Group, School of Medicine and Health Sciences, Mulungushi University, Livingstone Campus, Livingstone 10101, Zambia
- Vanderbilt University Medical Center, Department of Medicine, Division of Clinical Pharmacology, Room 536 Robinson Research Building, Nashville, TN 37232-6602, USA
| | - Bislom C Mweene
- HAND Research Group, School of Medicine and Health Sciences, Mulungushi University, Livingstone Campus, Livingstone 10101, Zambia
| | - Emmanuel Luwaya
- HAND Research Group, School of Medicine and Health Sciences, Mulungushi University, Livingstone Campus, Livingstone 10101, Zambia
| | - Lweendo Muchaili
- HAND Research Group, School of Medicine and Health Sciences, Mulungushi University, Livingstone Campus, Livingstone 10101, Zambia
| | - Makondo Chona
- HAND Research Group, School of Medicine and Health Sciences, Mulungushi University, Livingstone Campus, Livingstone 10101, Zambia
| | - Annet Kirabo
- Vanderbilt University Medical Center, Department of Medicine, Division of Clinical Pharmacology, Room 536 Robinson Research Building, Nashville, TN 37232-6602, USA
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9
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Basar E, Shum B, Skaletz-Rorowski A, Wu Y, Nambiar S, Brockmeyer NH. Cholesterol-conjugated siRNAs silence gene expression in mucosal dendritic cells in cervicovaginal tissue in mice. J Eur Acad Dermatol Venereol 2023; 37:615-626. [PMID: 36331362 DOI: 10.1111/jdv.18718] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 10/06/2022] [Indexed: 11/06/2022]
Abstract
BACKGROUND RNA interference (RNAi) provides a powerful way to investigate the role of genes in disease pathogenesis and modulate gene expression to treat disease. In 2018, the FDA approved patisiran, the first RNAi-based drug, hence paving the way for a novel class of RNAi therapeutics. Harnessing RNAi to inhibit vaginal HIV transmission requires effective gene silencing in immune cells, which remains difficult. Knockdown in accessible mucosal tissues may be easier than systemic gene silencing. Vaginally applied cholesterol-conjugated small interfering RNAs (chol-siRNAs) blocked herpes simplex virus transmission in mice without tissue damage or immunostimulation. OBJECTIVES AND METHODS To investigate using flow cytometry, confocal microscopy, and quantitative imaging if chol-siRNAs silence gene expression in vaginal immune cells in mice. RESULTS Although chol-siRNAs and lipoplexed-siRNAs silence gene expression in dendritic cells (DCs) in vitro, most internalized siRNAs concentrate within multivesicular bodies, where they are inaccessible to the cellular RNAi machinery. When applied intravaginally in vivo, chol-siRNAs penetrate the vaginal mucosa, including the lamina propria, and are efficiently internalized by intraepithelial (IE) and lamina propria (LP) DCs, and CD11b+ CD45+ cells, but not by T cells. Chol-siRNAs induce partial gene silencing in IE and LP DCs throughout the genital mucosa in vivo but are inactive in F4/80+ CD11b+ macrophages and T cells. CONCLUSION As mucosal DCs play an essential role for mucosal viral entry and dissemination, chol-siRNAs could be harnessed to target various host factors that are critical for viral uptake, DC migration and trans-infection of virions to T cells, hence allowing the development of a preventive vaginal HIV microbicide. Furthermore, chol-siRNAs could help elucidate the pathways of HIV transmission and understand the immunologic function of DCs in the genital tract.
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Affiliation(s)
- Emre Basar
- Immune Disease Institute and Program in Cellular and Molecular Medicine, Children's Hospital Boston, Harvard Medical School, Boston, Massachusetts, USA.,WIR - Walk In Ruhr, Center for Sexual Health & Medicine, Department of Dermatology, Venerology and Allergology, Ruhr-Universität Bochum, Bochum, Germany.,Competence Network for HIV/AIDS, Ruhr-Universität Bochum, Bochum, Germany
| | - Bennett Shum
- Immune Disease Institute and Program in Cellular and Molecular Medicine, Children's Hospital Boston, Harvard Medical School, Boston, Massachusetts, USA
| | - Adriane Skaletz-Rorowski
- WIR - Walk In Ruhr, Center for Sexual Health & Medicine, Department of Dermatology, Venerology and Allergology, Ruhr-Universität Bochum, Bochum, Germany.,Competence Network for HIV/AIDS, Ruhr-Universität Bochum, Bochum, Germany
| | - Yichao Wu
- Immune Disease Institute and Program in Cellular and Molecular Medicine, Children's Hospital Boston, Harvard Medical School, Boston, Massachusetts, USA
| | - Sandeep Nambiar
- WIR - Walk In Ruhr, Center for Sexual Health & Medicine, Department of Dermatology, Venerology and Allergology, Ruhr-Universität Bochum, Bochum, Germany.,Competence Network for HIV/AIDS, Ruhr-Universität Bochum, Bochum, Germany
| | - Norbert H Brockmeyer
- WIR - Walk In Ruhr, Center for Sexual Health & Medicine, Department of Dermatology, Venerology and Allergology, Ruhr-Universität Bochum, Bochum, Germany.,Competence Network for HIV/AIDS, Ruhr-Universität Bochum, Bochum, Germany
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10
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Ackerley CG, Smith SA, Murray PM, Amancha PK, Arthur RA, Zhu Z, Chahroudi A, Amara RR, Hu YJ, Kelley CF. The rectal mucosal immune environment and HIV susceptibility among young men who have sex with men. Front Immunol 2022; 13:972170. [PMID: 36341414 PMCID: PMC9631201 DOI: 10.3389/fimmu.2022.972170] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 09/07/2022] [Indexed: 12/03/2022] Open
Abstract
Young men who have sex with men (YMSM) represent a particularly high-risk group for HIV acquisition in the US, despite similarly reported rates of sexual activity as older, adult MSM (AMSM). Increased rates of HIV infection among YMSM compared to AMSM could be partially attributable to differences within the rectal mucosal (RM) immune environment associated with earlier sexual debut and less lifetime exposure to receptive anal intercourse. Using an ex vivo explant HIV challenge model, we found that rectal tissues from YMSM supported higher levels of p24 at peak viral replication timepoints compared to AMSM. Among YMSM, the RM was characterized by increased CD4+ T cell proliferation, as well as lower frequencies of tissue resident CD8+ T cells and pro-inflammatory cytokine producing CD4+ and CD8+ T cells. In addition, the microbiome composition of YMSM was enriched for anaerobic taxa that have previously been associated with HIV acquisition risk, including Prevotella, Peptostreptococcus, and Peptoniphilus. These distinct immunologic and microbiome characteristics were found to be associated with higher HIV replication following ex vivo challenge of rectal explants, suggesting the RM microenvironment of YMSM may be uniquely conducive to HIV infection.
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Affiliation(s)
- Cassie G. Ackerley
- The Hope Clinic of the Emory Vaccine Research Center, Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Decatur, GA, United States
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, United States
- *Correspondence: Cassie G. Ackerley,
| | - S. Abigail Smith
- The Hope Clinic of the Emory Vaccine Research Center, Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Decatur, GA, United States
| | - Phillip M. Murray
- The Hope Clinic of the Emory Vaccine Research Center, Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Decatur, GA, United States
| | - Praveen K. Amancha
- The Hope Clinic of the Emory Vaccine Research Center, Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Decatur, GA, United States
| | - Robert A. Arthur
- Emory Integrated Computational Core, Emory University, Atlanta, GA, United States
| | - Zhengyi Zhu
- Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, GA, United States
| | - Ann Chahroudi
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, United States
- Emory National Primate Research Center, Emory University, Atlanta, GA, United States
- Center for Childhood Infections and Vaccines of Children’s Healthcare of Atlanta, Emory University, Atlanta, GA, United States
| | - Rama R. Amara
- Emory National Primate Research Center, Emory University, Atlanta, GA, United States
- Department of Microbiology and Immunology, Emory University, Atlanta, GA, United States
| | - Yi-Juan Hu
- Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, GA, United States
| | - Colleen F. Kelley
- The Hope Clinic of the Emory Vaccine Research Center, Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Decatur, GA, United States
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11
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Long-term antibody production and viremia in American mink (Neovison vison) challenged with Aleutian mink disease virus. BMC Vet Res 2022; 18:364. [PMID: 36192746 PMCID: PMC9531452 DOI: 10.1186/s12917-022-03462-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 09/16/2022] [Indexed: 11/20/2022] Open
Abstract
Background Selecting American mink (Neovison vison) for tolerance to Aleutian mink disease virus (AMDV) has gained popularity in recent years, but data on the outcomes of this activity are scant. The objectives of this study were to determine the long-term changes in viremia, seroconversion and survival in infected mink. Mink were inoculated intranasally with a local isolate of Aleutian mink disease virus (AMDV) over 4 years (n = 1742). The animals had been selected for tolerance to AMDV for more than 20 years (TG100) or were from herds free of AMDV (TG0). The progenies of TG100 and TG0, and their crosses with 25, 50 and 75% tolerance ancestry were also used. Blood samples were collected from each mink up to 14 times until 1211 days post-inoculation (dpi) and were tested for viremia by PCR and for anti-AMDV antibodies by counter-immunoelectrophoresis (CIEP). Viremia and CIEP status were not considered when selecting replacements. Low-performing animals were pelted and the presence of antibodies in their blood and antibody titer were measured by CIEP, and viremia and viral DNA in seven organs (n = 936) were tested by PCR. Results The peak incidences of viremia (66.7%) and seropositivity (93.5%) were at 35 dpi. The incidence of viremia decreased over time while the incidence of seroconversion increased. The least-squares means of the incidence of PCR positive of lymph node (0.743) and spleen (0.656) were significantly greater than those of bone marrow, liver, kidneys, lungs and small intestine (0.194 to 0.342). Differences in tolerant ancestry were significant for every trait measured. Incidences of viremia over time, terminal viremia, seropositivity over time, AMDV DNA in organs and antibody titer were highest in the susceptible groups (TG0 or TG25) and lowest in the tolerant groups (TG100 or TG75). Conclusion Previous history of selection for tolerance resulted in mink with reduced viral replication and antibody titer. Viremia had a negative effect and antibody production had a positive effect on survival and productivity. Supplementary Information The online version contains supplementary material available at 10.1186/s12917-022-03462-7.
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12
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Brogna C, Brogna B, Bisaccia DR, Lauritano F, Marino G, Montano L, Cristoni S, Prisco M, Piscopo M. Could SARS-CoV-2 Have Bacteriophage Behavior or Induce the Activity of Other Bacteriophages? Vaccines (Basel) 2022; 10:vaccines10050708. [PMID: 35632464 PMCID: PMC9143435 DOI: 10.3390/vaccines10050708] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 04/25/2022] [Accepted: 04/28/2022] [Indexed: 02/04/2023] Open
Abstract
SARS-CoV-2 has become one of the most studied viruses of the last century. It was assumed that the only possible host for these types of viruses was mammalian eukaryotic cells. Our recent studies show that microorganisms in the human gastrointestinal tract affect the severity of COVID-19 and for the first time provide indications that the virus might replicate in gut bacteria. In order to further support these findings, in the present work, cultures of bacteria from the human microbiome and SARS-CoV-2 were analyzed by electron and fluorescence microscopy. The images presented in this article, in association with the nitrogen (15N) isotope-labeled culture medium experiment, suggest that SARS-CoV-2 could also infect bacteria in the gut microbiota, indicating that SARS-CoV-2 could act as a bacteriophage. Our results add new knowledge to the understanding of the mechanisms of SARS-CoV-2 infection and fill gaps in the study of the interactions between SARS-CoV-2 and non-mammalian cells. These findings could be useful in suggesting specific new pharmacological solutions to support the vaccination campaign.
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Affiliation(s)
- Carlo Brogna
- Department of Research, Craniomed Group Facility Srl., 20091 Bresso, Italy; (D.R.B.); (F.L.)
- Correspondence: (C.B.); (M.P.)
| | - Barbara Brogna
- Department of Radiology, Moscati Hospital, Contrada Amoretta, 83100 Avellino, Italy;
| | - Domenico Rocco Bisaccia
- Department of Research, Craniomed Group Facility Srl., 20091 Bresso, Italy; (D.R.B.); (F.L.)
| | - Francesco Lauritano
- Department of Research, Craniomed Group Facility Srl., 20091 Bresso, Italy; (D.R.B.); (F.L.)
| | - Giuliano Marino
- Marsan Consulting Srl., Public Health Company, Via dei Fiorentini, 80133 Naples, Italy;
| | - Luigi Montano
- Andrology Unit and Service of Life Style Medicine in Uro-Andrology, Local Health Authority (ASL), 84124 Salerno, Italy;
| | | | - Marina Prisco
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy;
| | - Marina Piscopo
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy;
- Correspondence: (C.B.); (M.P.)
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13
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Saluzzo S, Pandey RV, Gail LM, Dingelmaier-Hovorka R, Kleissl L, Shaw L, Reininger B, Atzmüller D, Strobl J, Touzeau-Römer V, Beer A, Staud C, Rieger A, Farlik M, Weninger W, Stingl G, Stary G. Delayed antiretroviral therapy in HIV-infected individuals leads to irreversible depletion of skin- and mucosa-resident memory T cells. Immunity 2021; 54:2842-2858.e5. [PMID: 34813775 DOI: 10.1016/j.immuni.2021.10.021] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 07/20/2021] [Accepted: 10/27/2021] [Indexed: 02/07/2023]
Abstract
People living with HIV (PLWH) are at increased risk for developing skin and mucosal malignancies despite systemic reconstitution of CD4+ T cells upon antiretroviral therapy (ART). The underlying mechanism of chronic tissue-related immunodeficiency in HIV is unclear. We found that skin CD4+ tissue-resident memory T (Trm) cells were depleted after HIV infection and replenished only upon early ART initiation. TCR clonal analysis following early ART suggested a systemic origin for reconstituting CD4+ Trm cells. Single-cell RNA sequencing in PLWH that received late ART treatment revealed a loss of CXCR3+ Trm cells and a tolerogenic skin immune environment. Human papilloma virus-induced precancerous lesion biopsies showed reduced CXCR3+ Trm cell frequencies in the mucosa in PLWH versus HIV- individuals. These results reveal an irreversible loss of CXCR3+ Trm cells confined to skin and mucosa in PLWH who received late ART treatment, which may be a precipitating factor in the development of HPV-related cancer.
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Affiliation(s)
- Simona Saluzzo
- Department of Dermatology, Medical University of Vienna, Vienna 1090, Austria.
| | - Ram Vinay Pandey
- Department of Dermatology, Medical University of Vienna, Vienna 1090, Austria
| | - Laura Marie Gail
- Department of Dermatology, Medical University of Vienna, Vienna 1090, Austria; LBI-RUD - Ludwig-Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna 1090, Austria; CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna 1090, Austria
| | | | - Lisa Kleissl
- Department of Dermatology, Medical University of Vienna, Vienna 1090, Austria; LBI-RUD - Ludwig-Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna 1090, Austria
| | - Lisa Shaw
- Department of Dermatology, Medical University of Vienna, Vienna 1090, Austria
| | - Bärbel Reininger
- Department of Dermatology, Medical University of Vienna, Vienna 1090, Austria
| | - Denise Atzmüller
- Department of Dermatology, Medical University of Vienna, Vienna 1090, Austria; LBI-RUD - Ludwig-Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna 1090, Austria
| | - Johanna Strobl
- Department of Dermatology, Medical University of Vienna, Vienna 1090, Austria; CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna 1090, Austria
| | | | - Andrea Beer
- Department of Pathology, Medical University of Vienna, Vienna 1090, Austria
| | - Clement Staud
- Department of Plastic, Reconstructive and Aesthetic Surgery, Medical University of Vienna, Vienna 1090, Austria
| | - Armin Rieger
- Department of Dermatology, Medical University of Vienna, Vienna 1090, Austria
| | - Matthias Farlik
- Department of Dermatology, Medical University of Vienna, Vienna 1090, Austria
| | - Wolfgang Weninger
- Department of Dermatology, Medical University of Vienna, Vienna 1090, Austria
| | - Georg Stingl
- Department of Dermatology, Medical University of Vienna, Vienna 1090, Austria
| | - Georg Stary
- Department of Dermatology, Medical University of Vienna, Vienna 1090, Austria; LBI-RUD - Ludwig-Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna 1090, Austria; CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna 1090, Austria.
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14
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Systemic and Intestinal Viral Reservoirs in CD4+ T Cell Subsets in Primary SIV Infection. Viruses 2021; 13:v13122398. [PMID: 34960667 PMCID: PMC8704255 DOI: 10.3390/v13122398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 11/18/2021] [Accepted: 11/25/2021] [Indexed: 11/17/2022] Open
Abstract
The HIV reservoir size in target CD4+ T cells during primary infection remains unknown. Here, we sorted peripheral and intestinal CD4+ T cells and quantified the levels of cell-associated SIV RNA and DNA in rhesus macaques within days of SIVmac251 inoculation. As a major target cell of HIV/SIV, CD4+ T cells in both tissues contained a large amount of SIV RNA and DNA at day 8–13 post-SIV infection, in which productive SIV RNA highly correlated with the levels of cell-associated SIV DNA. Memory CD4+ T cells had much higher viral RNA and DNA than naïve subsets, yet memory CD4+ T cells co-expressing CCR5 had no significant reservoir size compared with those that were CCR5-negative in blood and intestine. Collectively, memory CD4+ T cells appear to be the major targets for primary infection, and viral reservoirs are equally distributed in systemic and lymphoid compartments in acutely SIV-infected macaques.
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15
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VanBenschoten HM, Woodrow KA. Vaginal delivery of vaccines. Adv Drug Deliv Rev 2021; 178:113956. [PMID: 34481031 PMCID: PMC8722700 DOI: 10.1016/j.addr.2021.113956] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 08/06/2021] [Accepted: 08/28/2021] [Indexed: 11/22/2022]
Abstract
Recent estimates suggest that one in two sexually active individuals will acquire a sexually transmitted infection by age 25, an alarming statistic that amounts to over 1 million new infections per day worldwide. Vaccination against STIs is highly desirable for alleviating this global burden of disease. Vaginal immunization is a promising strategy to combat transmission via the vaginal mucosa. The vagina is typically considered a poor inductive site for common correlates of adaptive immunity. However, emerging evidence suggests that immune tolerance may be overcome by precisely engineered vaccination schemes that orchestrate cell-mediated immunity and establish tissue resident memory immune cells. In this review, we will discuss the unique immunological milieu of the vaginal mucosa and our current understanding of correlates of pathogenesis and protection for several common STIs. We then present a summary of recent vaginal vaccine studies and explore the role that mucosal adjuvants and delivery systems play in enhancing protection according to requisite features of immunity. Finally, we offer perspectives on the challenges and future directions of vaginal vaccine delivery, discussing remaining physiological barriers and innovative vaccine formulations that may overcome them.
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Affiliation(s)
- Hannah M VanBenschoten
- Department of Bioengineering, University of Washington, Seattle, WA 98105, United States
| | - Kim A Woodrow
- Department of Bioengineering, University of Washington, Seattle, WA 98105, United States.
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16
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Swaims-Kohlmeier A, Sheth AN, Brody J, Hardnett FP, Sharma S, Bonning EW, Ofotokun I, Massud I, García-Lerma JG. Proinflammatory oscillations over the menstrual cycle drives bystander CD4 T cell recruitment and SHIV susceptibility from vaginal challenge. EBioMedicine 2021; 69:103472. [PMID: 34229275 PMCID: PMC8264117 DOI: 10.1016/j.ebiom.2021.103472] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 05/02/2021] [Accepted: 06/15/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The menstrual cycle influences HIV infection-risk in women, although the timing and underlying mechanism are unclear. Here we investigated the contribution of the menstrual cycle to HIV susceptibility through evaluating immune behavior with infection-risk over time. METHODS Blood and vaginal lavage samples were collected from 18 pig-tailed macaques to evaluate immune changes over reproductive cycles, and from 5 additional animals undergoing repeated vaginal exposures to simian HIV (SHIV). Peripheral blood mononuclear cell (PBMC) samples from healthy women (n = 10) were prospectively collected over the course of a menstrual cycle to profile T cell populations. Immune properties from PBMC and vaginal lavage samples were measured by flow cytometry. Plasma progesterone was measured by enzyme immunoassay. The oscillation frequency of progesterone concentration and CCR5 expression on CD4 T cells was calculated using the Lomb-Scargle periodogram. SHIV infection was monitored in plasma by RT-PCR. Immune measures were compared using generalized estimating equations (GEE). FINDINGS Macaques cycle-phases were associated with fluctuations in systemic immune properties and a type-1 inflammatory T cell response with corresponding CCR5+ memory CD4 T cell (HIV target cell) infiltration into the vaginal lumen at the late luteal phase. Power spectral analysis identified CCR5 oscillation frequencies synchronized with reproductive cycles. In a repetitive low-dose vaginal challenge model, productive SHIV163P3 infection only occurred during intervals of mounting type-1 T cell responses (n = 5/5). Finally, we identify similar type-1 inflammatory T cell responses over the menstrual cycle are occurring in healthy women. INTERPRETATION These data demonstrate that periodic shifts in the immune landscape under menstrual cycle regulation drives bystander CCR5+ CD4 T cell recruitment and HIV susceptibility in the female reproductive tract. FUNDING This study was supported by the U.S. Centers for Disease Control and Prevention, Atlanta, GA 30329 and NIH grants to Emory University (K23AI114407 to A.N.S., the Emory University Center for AIDS research [P30AI050409], and Atlanta Clinical and Translational Sciences Institute [KLR2TR000455, UL1TR000454]). DISCLAIMER The findings and conclusions in this report are those of the authors and do not necessarily represent the views of the U.S. Centers for Disease Control and Prevention or the Department of Health and Human Services.
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Affiliation(s)
- Alison Swaims-Kohlmeier
- Division of HIV/AIDS Prevention, National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control and Prevention, Atlanta, GA 30329, United States..
| | - Anandi N Sheth
- Division of Infectious Diseases, Department of Medicine, Emory University, Atlanta, GA 30322, United States
| | - Jed Brody
- Department of Physics, Emory University, Atlanta, GA 30322, United States
| | - Felicia P Hardnett
- Division of HIV/AIDS Prevention, National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control and Prevention, Atlanta, GA 30329, United States
| | - Sunita Sharma
- Division of HIV/AIDS Prevention, National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control and Prevention, Atlanta, GA 30329, United States
| | - Erin Wells Bonning
- Department of Physics, Emory University, Atlanta, GA 30322, United States
| | - Igho Ofotokun
- Division of Infectious Diseases, Department of Medicine, Emory University, Atlanta, GA 30322, United States
| | - Ivana Massud
- Division of HIV/AIDS Prevention, National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control and Prevention, Atlanta, GA 30329, United States
| | - J Gerardo García-Lerma
- Division of HIV/AIDS Prevention, National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control and Prevention, Atlanta, GA 30329, United States
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17
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Wang X, Mehra S, Kaushal D, Veazey RS, Xu H. Abnormal Tryptophan Metabolism in HIV and Mycobacterium tuberculosis Infection. Front Microbiol 2021; 12:666227. [PMID: 34262540 PMCID: PMC8273495 DOI: 10.3389/fmicb.2021.666227] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 05/31/2021] [Indexed: 12/12/2022] Open
Abstract
Host metabolism has recently gained more attention for its roles in physiological functions and pathologic conditions. Of these, metabolic tryptophan disorders generate a pattern of abnormal metabolites that are implicated in various diseases. Here, we briefly highlight the recent advances regarding abnormal tryptophan metabolism in HIV and Mycobacterium tuberculosis infection and discuss its potential impact on immune regulation, disease progression, and neurological disorders. Finally, we also discuss the potential for metabolic tryptophan interventions toward these infectious diseases.
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Affiliation(s)
- Xiaolei Wang
- Division of Comparative Pathology, Tulane National Primate Research Center, Tulane University School of Medicine, Covington, LA, United States
| | - Smriti Mehra
- Division of Comparative Pathology, Tulane National Primate Research Center, Tulane University School of Medicine, Covington, LA, United States
| | - Deepak Kaushal
- Southwest National Primate Research Center, Texas Biomedical Research Institute, San Antonio, TX, United States
| | - Ronald S. Veazey
- Division of Comparative Pathology, Tulane National Primate Research Center, Tulane University School of Medicine, Covington, LA, United States
| | - Huanbin Xu
- Division of Comparative Pathology, Tulane National Primate Research Center, Tulane University School of Medicine, Covington, LA, United States
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18
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Prabhakaran M, Narpala S, Andrews SF, O'Connell S, Lin CL, Coates EE, Flach B, Ledgerwood JE, McDermott AB. A sensitive method to quantify HIV-1 antibodies in mucosal samples. J Immunol Methods 2021; 491:112995. [PMID: 33582148 DOI: 10.1016/j.jim.2021.112995] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 01/21/2021] [Accepted: 02/02/2021] [Indexed: 10/22/2022]
Abstract
Human immunodeficiency virus (HIV) remains a significant public health issue. In recent years, passive immunization with broadly neutralizing antibodies (bNabs) is being considered as a potentially efficacious approach for fighting HIV. One candidate that holds great promise is represented by the CD4-binding site targeted bNab capable of neutralizing over 90% of circulating HIV strains, VRC01. VRC01 along with its variants and clonal relatives - VRC01-LS and VRC07-523LS are currently being evaluated as vaccines in a number of clinical trials for HIV treatment and prevention. While mucosal areas of the body serve as major ports of HIV entry, reliable quantification of bNabs for pharmacokinetic and bioavailability analyses has been challenging due to low antibody concentrations in these samples. We developed an immunoassay on the Singulex platform which enables ultra-sensitive quantification of VRC01, VRC07, VRC01-LS and VRC07-523LS with a greater than 4-log linear dynamic range (LDR) and less than 120 pg/mL lower limit of quantitation (LLOQ). We implemented this assay to quantify VRC01 levels in rectal, cervical and oral mucosal samples in two passive immunization studies conducted with VRC01 - VRC 601 and VRC 602. Our assay was able to successfully quantify VRC01 levels in mucosal samples from all dosage groups (5 - -40 mg/kg) in these trials. VRC01 levels in a significant proportion of these samples (37% in oral and 25% in rectal mucosa) were below the lower limits of quantitation of other traditional immunoassays used for VRC01 quantification. We also measured VRC01 levels in sera from these trials and found that VRC01 measurements made using our assay exhibited excellent correlation (r2 = 0.9509) with measurements made previously using Enzyme-linked immunosorbent assay (ELISA). Our assay provides a reliable, sensitive and accurate method for quantification of clinically relevant bNabs and will help delineate antibody infiltration and bioavailability characteristics in complex biological matrices (CBM) such as mucosal tissues. This will in turn help determine clinical antibody threshold concentrations required to mediate protection against HIV acquisition and serve to inform dosing regimens and clinical trial design for future efficacy trials with these bNabs.
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Affiliation(s)
- Madhu Prabhakaran
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, 40 Convent Drive, Bethesda, MD 20814, USA
| | - Sandeep Narpala
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, 40 Convent Drive, Bethesda, MD 20814, USA
| | - Sarah F Andrews
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, 40 Convent Drive, Bethesda, MD 20814, USA
| | - Sarah O'Connell
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, 40 Convent Drive, Bethesda, MD 20814, USA
| | - Chien L Lin
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, 40 Convent Drive, Bethesda, MD 20814, USA
| | - Emily E Coates
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, 40 Convent Drive, Bethesda, MD 20814, USA
| | - Britta Flach
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, 40 Convent Drive, Bethesda, MD 20814, USA
| | - Julie E Ledgerwood
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, 40 Convent Drive, Bethesda, MD 20814, USA
| | - Adrian B McDermott
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, 40 Convent Drive, Bethesda, MD 20814, USA.
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19
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Peters BA, Xue X, Wang Z, Usyk M, Santoro N, Sharma A, Anastos K, Tien PC, Golub ET, Weber KM, Gustafson D, Kaplan RC, Burk R, Qi Q. Menopausal status and observed differences in the gut microbiome in women with and without HIV infection. Menopause 2021; 28:491-501. [PMID: 33438892 PMCID: PMC8068580 DOI: 10.1097/gme.0000000000001730] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Gut microbiota respond to host physiological phenomena, yet little is known regarding shifts in the gut microbiome due to menopausal hormonal and metabolic changes in women. HIV infection impacts menopause and may also cause gut dysbiosis. We therefore sought to determine the association between menopausal status and gut microbiome composition in women with and without HIV. METHODS Gut microbiome composition was assessed in stool from 432 women (99 premenopausal HIV+, 71 premenopausal HIV-, 182 postmenopausal HIV+, 80 postmenopausal HIV-) via 16S rRNA gene sequencing. We examined cross-sectional associations of menopause with gut microbiota overall diversity and composition, and taxon and inferred metagenomic pathway abundance. Models were stratified by HIV serostatus and adjusted for age, HIV-related variables, and other potential confounders. RESULTS Menopause, ie post- versus premenopausal status, was associated with overall microbial composition only in women with HIV (permutational MANOVA of Jensen Shannon Divergence: P = 0.01). In women with HIV, menopause was associated with enrichment of gram-negative order Enterobacteriales, depletion of highly abundant taxa within Prevotella copri, and alterations in other low-abundance taxa. Additionally, menopause in women with HIV was associated with enrichment of metagenomic pathways related to Enterobacteriales, including degradation of amino acids and phenolic compounds, biosynthesis of enterobactin, and energy metabolism pathways. Menopause-related differences in some low-abundance taxa were also observed in women without HIV. CONCLUSIONS A changing gut microbiome may be an overlooked phenomenon of reproductive aging in women with HIV. Longitudinal assessments across all reproductive stages are necessary to confirm these findings and identify health implications.
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Affiliation(s)
- Brandilyn A. Peters
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Xiaonan Xue
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Zheng Wang
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Mykhaylo Usyk
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Nanette Santoro
- Department of Obstetrics and Gynecology, University of Colorado School of Medicine, Aurora, CO, USA
| | - Anjali Sharma
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Kathryn Anastos
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, USA
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Phyllis C. Tien
- Department of Medicine, University of California San Francisco, and Department of Veterans Affairs Medical Center, San Francisco, CA, USA
| | - Elizabeth T. Golub
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Kathleen M. Weber
- Cook County Health and Hektoen Institute of Medicine, Chicago, IL, USA
| | - Deborah Gustafson
- Department of Neurology, State University of New York Downstate Health Sciences University, Brooklyn, NY, USA
| | - Robert C. Kaplan
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, USA
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Robert Burk
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, USA
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY, USA
- Department of Obstetrics & Gynecology and Women’s Health, Albert Einstein College of Medicine, Bronx, New York, USA
| | - Qibin Qi
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, USA
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20
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Chaudhary O, Wang L, Bose D, Narayan V, Yeh MT, Carville A, Clements JD, Andino R, Kozlowski PA, Aldovini A. Comparative Evaluation of Prophylactic SIV Vaccination Modalities Administered to the Oral Cavity. AIDS Res Hum Retroviruses 2020; 36:984-997. [PMID: 32962398 PMCID: PMC7703093 DOI: 10.1089/aid.2020.0157] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Attempts to develop a protective human immunodeficiency virus (HIV) vaccine have had limited success, especially in terms of inducing protective antibodies capable of neutralizing different viral strains. As HIV transmission occurs mainly via mucosal surfaces, HIV replicates significantly in the gastrointestinal tract, and the oral route of vaccination is a very convenient one to implement worldwide, we explored three SIV vaccine modalities administered orally and composed of simian immunodeficiency virus (SIV) DNA priming with different boosting immunogens, with the goal of evaluating whether they could provide lasting humoral and cellular responses, including at mucosal surfaces that are sites of HIV entry. Twenty-four Cynomolgus macaques (CyM) were primed with replication-incompetent SIV DNA provirus and divided into three groups for the following booster vaccinations, all administered in the oral cavity: Group 1 with recombinant SIV gp140 and Escherichia coli heat-labile toxin adjuvant dmLT, Group 2 with recombinant SIV-Oral Poliovirus (SIV-OPV), and Group 3 with recombinant SIV-modified vaccinia ankara (SIV-MVA). Cell-mediated responses were measured using blood, lymph node, rectal and vaginal mononuclear cells. Significant levels of systemic and mucosal T-cell responses against Gag and Env were observed in all groups. Some SIV-specific plasma IgG, rectal and salivary IgA antibodies were generated, mainly in animals that received SIV DNA + SIV-MVA, but no vaginal IgA was detected. Susceptibility to infection after SIVmac251 challenge was similar in vaccinated and nonvaccinated animals, but acute infection viremia levels were lower in the group that received SIV DNA + SIV-MVA. Nonvaccinated CyM maintained central memory and total CD4+ T-cell levels in the normal range during the 5 months of postinfection follow-up as did the vaccinated animals, precluding evaluation of vaccine impact on disease progression. We conclude that the oral cavity vaccination tested in these regimens can stimulate cell-mediated immunity systemically and mucosally, but humoral response stimulation was limited with the doses and the vaccine platforms used.
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Affiliation(s)
- Omkar Chaudhary
- Department of Medicine, Boston Children's Hospital, Boston, Massachusetts, USA
- Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA
| | - Lingyun Wang
- Department of Medicine, Boston Children's Hospital, Boston, Massachusetts, USA
- Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA
| | - Deepanwita Bose
- Department of Medicine, Boston Children's Hospital, Boston, Massachusetts, USA
- Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA
| | - Vivek Narayan
- Department of Medicine, Boston Children's Hospital, Boston, Massachusetts, USA
- Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA
| | - Ming Te Yeh
- Department of Microbiology and Immunology, UCSF, San Francisco, California, USA
| | | | - John D. Clements
- Department of Microbiology and Immunology, Tulane University School of Medicine, New Orleans, Louisiana, USA
| | - Raul Andino
- Department of Microbiology and Immunology, UCSF, San Francisco, California, USA
| | - Pamela A. Kozlowski
- Department of Microbiology, Immunology and Parasitology, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA
| | - Anna Aldovini
- Department of Medicine, Boston Children's Hospital, Boston, Massachusetts, USA
- Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA
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21
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Haddad LB, Swaims-Kohlmeier A, Mehta CC, Haaland RE, Brown NL, Sheth AN, Chien H, Titanji K, Achilles SL, Lupo D, Hart CE, Ofotokun I. Impact of etonogestrel implant use on T-cell and cytokine profiles in the female genital tract and blood. PLoS One 2020; 15:e0230473. [PMID: 32214321 PMCID: PMC7098611 DOI: 10.1371/journal.pone.0230473] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Accepted: 02/28/2020] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND While prior epidemiologic studies have suggested that injectable progestin-based contraceptive depot medroxyprogesterone acetate (DMPA) use may increase a woman's risk of acquiring HIV, recent data have suggested that DMPA users may be at a similar risk for HIV acquisition as users of the copper intrauterine device and levonorgestrel implant. Use of the etonogestrel Implant (Eng-Implant) is increasing but there are currently no studies evaluating its effect on HIV acquisition risk. OBJECTIVE Evaluate the potential effect of the Eng-Implant use on HIV acquisition risk by analyzing HIV target cells and cytokine profiles in the lower genital tract and blood of adult premenopausal HIV-negative women using the Eng-Implant. METHODS We prospectively obtained paired cervicovaginal lavage (CVL) and blood samples at 4 study visits over 16 weeks from women between ages 18-45, with normal menses (22-35 day intervals), HIV uninfected with no recent hormonal contraceptive or copper intrauterine device (IUD) use, no clinical signs of a sexually transmitted infection at enrollment and who were medically eligible to initiate Eng-Implant. Participants attended pre-Eng-Implant study visits (week -2, week 0) with the Eng-Implant inserted at the end of the week 0 study visit and returned for study visits at weeks 12 and 14. Genital tract leukocytes (enriched from CVL) and peripheral blood mononuclear cells (PBMC) from the study visits were evaluated for markers of activation (CD38, HLA-DR), retention (CD103) and trafficking (CCR7) on HIV target cells (CCR5+CD4+ T cells) using multicolor flow cytometry. Cytokines and chemokines in the CVL supernatant and blood plasma were measured in a Luminex assay. We estimated and compared study endpoints among the samples collected before and after contraception initiation with repeated-measures analyses using linear mixed models. RESULTS Fifteen of 18 women who received an Eng-Implant completed all 4 study visits. The percentage of CD4+ T cells in CVL was not increased after implant placement but the percentage of CD4+ T cells expressing the HIV co-receptor CCR5 did increase after implant placement (p = 0.02). In addition, the percentage of central memory CD4+ T-cells (CCR7+) in CVL increased after implant placement (p = 0.004). The percentage of CVL CD4+, CCR5+ HIV target cells expressing activation markers after implant placement was either reduced (HLA-DR+, p = 0.01) or unchanged (CD38+, p = 0.45). Most CVL cytokine and chemokine concentrations were not significantly different after implant placement except for a higher level of the soluble lymphocyte activation marker (sCD40L; p = 0.04) and lower levels of IL12p70 (p = 0.02) and G-CSF (p<0.001). In systemic blood, none of the changes noted in CVL after implant placement occurred except for decreases in the percentage CD4 T-cells expressing HLA-DR+ T cells (p = 0.006) and G-CSF (p = 0.02). CONCLUSIONS Eng-Implant use was associated with a moderate increase in the availability of HIV target cells in the genital tract, however the percentage of these cells that were activated did not increase and there were minimal shifts in the overall immune environment. Given the mixed nature of these findings, it is unclear if these implant-induced changes alter HIV risk.
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Affiliation(s)
- Lisa B. Haddad
- Department of Gynecology and Obstetrics, Emory University School of Medicine, Atlanta, Georgia, United States of America
| | - Alison Swaims-Kohlmeier
- Laboratory Branch, Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
| | - C. Christina Mehta
- Department of Biostatistics and Bioinformatics, Emory University Rollins School of Public Health, Atlanta, Georgia, United States of America
| | - Richard E. Haaland
- Laboratory Branch, Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
| | - Nakita L. Brown
- Department of Medicine, Division of Infectious Diseases, Emory University School of Medicine, Atlanta, Georgia
- Grady Healthcare System, Atlanta, Georgia, United States of America
| | - Anandi N. Sheth
- Department of Medicine, Division of Infectious Diseases, Emory University School of Medicine, Atlanta, Georgia
- Grady Healthcare System, Atlanta, Georgia, United States of America
| | - Hsin Chien
- Department of Medicine, Division of Infectious Diseases, Emory University School of Medicine, Atlanta, Georgia
- Grady Healthcare System, Atlanta, Georgia, United States of America
| | - Kehmia Titanji
- Department of Medicine, Division of Endocrinology, Emory University School of Medicine, Atlanta, Georgia, United States of America
| | - Sharon L. Achilles
- Department of Obstetrics, University of Pittsburg, Gynecology and Reproductive Sciences, Pittsburg, Pennsylvania, United States of America
| | - Davis Lupo
- Laboratory Branch, Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
| | - Clyde E. Hart
- Laboratory Branch, Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
| | - Igho Ofotokun
- Department of Medicine, Division of Infectious Diseases, Emory University School of Medicine, Atlanta, Georgia
- Grady Healthcare System, Atlanta, Georgia, United States of America
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22
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Cong Z, Tong L, Wang Y, Su A, Chen T, Wei Q, Xue J, Qin C. Does Mucosal B1 Activation Result in the Accumulation of Peak IgM During Chronic Intrarectal SIVmac239 Exposure to Protect Chinese-Origin Rhesus Macaques From Disease Progression? Front Microbiol 2020; 11:357. [PMID: 32265850 PMCID: PMC7103645 DOI: 10.3389/fmicb.2020.00357] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Accepted: 02/18/2020] [Indexed: 12/23/2022] Open
Abstract
Human immunodeficiency virus (HIV) infection is characterized by a dynamic process and highly variable progression. Although extensive comparisons have been reported between the minority of non-progressors (NPGs) and the majority of progressors (PGs), the underlying mechanism is still unclear. One reason for this is that the initial onset of infection is very difficult to track, particularly when men who have sex with men (MSM) are predominantly responsible for the transmission of human HIV. To find potential early protection strategies against later progression during chronic mucosal exposure, 10 Chinese-origin rhesus macaques (ChRhs) that underwent repetitive simian immunodeficiency virus (SIV) intrarectal exposure were longitudinally tracked. The results of the periodic detection of peripheral blood mononuclear cells (PBMCs) and colorectal mucosal lamina propria mononuclear cells (LPMCs) with immunoglobulins in rectal fluid were compared between non-progressive and progressive subgroups, which were classified based on their circulating viral loads. As a result, four NPGs and six PGs were observed after disease onset for 2 months. Upon comparing the mucosal and systemic immune responses, the PBMC response did not differ between the two subgroups. Regarding LPMCs, the increased activation of B1a/B1 cells among B cells and a peak in IgM in rectal fluid was observed approximately 10 days after the first exposure, followed by consistently low viremia in the four non-progressive ChRhs. In the six progressive ChRhs, neither B cell activation nor a peak in IgM was observed, while a robust elevation in IgG was observed, followed by consistently high viremia post exposure. Based on the PBMC-LPMC disparity between the subgroups of monkeys, we hypothesize that early B1 activation in LPMCs that result in an IgM peak might attenuate the entry and acquisition of SIV in the mucosa, resulting in very low dissemination into blood. Our models have suggested that the use of early surveillance both systemically and in the mucosa to comprehensively determine virus–host interactions would be informative for mucosal vaccine development.
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Affiliation(s)
- Zhe Cong
- Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, NHC Key Laboratory of Human Disease Comparative Medicine, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Comparative Medicine Center, Peking Union Medical College, Beijing, China
| | - Ling Tong
- Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, NHC Key Laboratory of Human Disease Comparative Medicine, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Comparative Medicine Center, Peking Union Medical College, Beijing, China
| | - Yuhong Wang
- Department of Gerontology and Geriatrics, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Aihua Su
- Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, NHC Key Laboratory of Human Disease Comparative Medicine, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Comparative Medicine Center, Peking Union Medical College, Beijing, China
| | - Ting Chen
- Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, NHC Key Laboratory of Human Disease Comparative Medicine, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Comparative Medicine Center, Peking Union Medical College, Beijing, China
| | - Qiang Wei
- Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, NHC Key Laboratory of Human Disease Comparative Medicine, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Comparative Medicine Center, Peking Union Medical College, Beijing, China
| | - Jing Xue
- Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, NHC Key Laboratory of Human Disease Comparative Medicine, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Comparative Medicine Center, Peking Union Medical College, Beijing, China
| | - Chuan Qin
- Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, NHC Key Laboratory of Human Disease Comparative Medicine, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Comparative Medicine Center, Peking Union Medical College, Beijing, China
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23
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Su B, Dispinseri S, Iannone V, Zhang T, Wu H, Carapito R, Bahram S, Scarlatti G, Moog C. Update on Fc-Mediated Antibody Functions Against HIV-1 Beyond Neutralization. Front Immunol 2019; 10:2968. [PMID: 31921207 PMCID: PMC6930241 DOI: 10.3389/fimmu.2019.02968] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 12/03/2019] [Indexed: 12/31/2022] Open
Abstract
Antibodies (Abs) are the major component of the humoral immune response and a key player in vaccination. The precise Ab-mediated inhibitory mechanisms leading to in vivo protection against HIV have not been elucidated. In addition to the desired viral capture and neutralizing Ab functions, complex Ab-dependent mechanisms that involve engaging immune effector cells to clear infected host cells, immune complexes, and opsonized virus have been proposed as being relevant. These inhibitory mechanisms involve Fc-mediated effector functions leading to Ab-dependent cellular cytotoxicity, phagocytosis, cell-mediated virus inhibition, aggregation, and complement inhibition. Indeed, the decreased risk of infection observed in the RV144 HIV-1 vaccine trial was correlated with the production of non-neutralizing inhibitory Abs, highlighting the role of Ab inhibitory functions besides neutralization. Moreover, Ab isotypes and subclasses recognizing specific HIV envelope epitopes as well as pecular Fc-receptor polymorphisms have been associated with disease progression. These findings further support the need to define which Fc-mediated Ab inhibitory functions leading to protection are critical for HIV vaccine design. Herein, based on our previous review Su & Moog Front Immunol 2014, we update the different inhibitory properties of HIV-specific Abs that may potentially contribute to HIV protection.
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Affiliation(s)
- Bin Su
- Center for Infectious Diseases, Beijing Youan Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory for HIV/AIDS Research, Beijing, China
| | - Stefania Dispinseri
- Viral Evolution and Transmission Unit, Division of Immunology, Transplantation, and Infectious Diseases, San Raffaele Scientific Institute, Milan, Italy
| | - Valeria Iannone
- Viral Evolution and Transmission Unit, Division of Immunology, Transplantation, and Infectious Diseases, San Raffaele Scientific Institute, Milan, Italy
| | - Tong Zhang
- Center for Infectious Diseases, Beijing Youan Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory for HIV/AIDS Research, Beijing, China
| | - Hao Wu
- Center for Infectious Diseases, Beijing Youan Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory for HIV/AIDS Research, Beijing, China
| | - Raphael Carapito
- INSERM U1109, LabEx TRANSPLANTEX, Fédération Hospitalo-Universitaire (FHU) OMICARE, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France
| | - Seiamak Bahram
- INSERM U1109, LabEx TRANSPLANTEX, Fédération Hospitalo-Universitaire (FHU) OMICARE, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France
| | - Gabriella Scarlatti
- Viral Evolution and Transmission Unit, Division of Immunology, Transplantation, and Infectious Diseases, San Raffaele Scientific Institute, Milan, Italy
| | - Christiane Moog
- INSERM U1109, LabEx TRANSPLANTEX, Fédération Hospitalo-Universitaire (FHU) OMICARE, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France.,Vaccine Research Institute (VRI), Créteil, France
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24
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Cognitive impairment and CSF proteome modification after oral bacteriotherapy in HIV patients. J Neurovirol 2019; 26:95-106. [PMID: 31677067 DOI: 10.1007/s13365-019-00801-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 08/22/2019] [Accepted: 08/27/2019] [Indexed: 01/01/2023]
Abstract
OBJECTIVE To investigate whether a probiotic supplementation to cART patients modifies the cerebrospinal fluid (CSF) proteome and improves neurocognitive impairment. METHODS 26 CSF samples from 13 HIV-positive patients [six patients living with HIV (PLHIV) and seven patients with a history of AIDS (PHAIDS)] were analyzed. All patients underwent to neurocognitive evaluation and blood sampling at baseline and after 6 months of oral bacteriotherapy. Immune phenotyping and activation markers (CD38 and HLA-DR) were evaluated on peripheral blood mononuclear cells (PBMC). Plasma levels of IL-6, sCD14, and MIP-1β were detected, by enzyme-linked immunosorbent assay (ELISA). Functional proteomic analysis of CSF sample was conducted by two-dimensional electrophoresis; a multivariate analysis was performed by principal component analysis (PCA) and data were enriched by STRING software. RESULTS Oral bacteriotherapy leads to an improvement on several cognitive test and neurocognitive performance in both groups of HIV-positive subjects. A reduction in the percentage of CD4+CD38+HLA-DR+ T cells was also observed at peripheral level after the probiotic intake (p = 0.008). In addition, the probiotic supplementation to cART significantly modifies protein species composition and abundance at the CSF level, especially those related to inflammation (β2-microglobulin p = 0.03; haptoglobin p = 0.06; albumin p = 0.003; hemoglobin p = 0.003; immunoglobulin heavy chains constant region p = 0.02, transthyretin p = 0.02) in PLHIV and PHAIDS. CONCLUSIONS Our results suggest that oral bacteriotherapy as a supplement to cART could exert a role in the amelioration of inflammation state at peripheral and CNS level.
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25
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Moscicki AB, Yao TJ, Russell JS, Farhat S, Scott M, Magpantay L, Halec G, Shiboski CH, Ryder MI. Biomarkers of oral inflammation in perinatally HIV-infected and perinatally HIV-exposed, uninfected youth. J Clin Periodontol 2019; 46:1072-1082. [PMID: 31385616 DOI: 10.1111/jcpe.13179] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 06/25/2019] [Accepted: 07/22/2019] [Indexed: 12/24/2022]
Abstract
AIM To examine oral biomarkers that have been associated with periodontal disease progression in HIV-infected adults in perinatally HIV-infected and HIV-exposed but uninfected youth. MATERIAL AND METHODS This was a cross-sectional, multicentre substudy of youth participating in the Oral Health Pediatric HIV/AIDS Cohort study. Gingival crevicular fluid repository samples from participants with and without periodontal disease (using Gingival Index [GI] and Bleeding on Probing [BOP] parameters on dental examination) were tested for concentration levels of inflammatory biomarkers. Associations were assessed using Wilcoxon test and Spearman correlation. RESULTS For perinatal HIV youth (n = 129), the markers consistently elevated (p < .05) in sites with GI ≥2 and in sites with BOP were interleukin-1β, 6 and 13, macrophage inflammatory protein-1α and metalloproteinase-9. Serum tumour necrosis factor-α and soluble CD14 were positively correlated with a summary count of elevated cytokines. No associations were seen among HIV-uninfected subjects (n = 71). CONCLUSIONS The association of oral biomarkers of inflammation with clinical indicators of periodontal inflammation and systemic immune activation suggests that perinatal HIV-infected youth may be at higher risk for developing significant periodontal disease, associated with tooth loss and HIV progression. More frequent dental care of this group is needed to prevent potential periodontal progression.
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Affiliation(s)
- Anna-Barbara Moscicki
- Department of Pediatrics, Division of Adolescent and Young Adult Medicine, University of California, Los Angeles, CA, USA
| | - Tzy-Jyun Yao
- Center for Biostatistics in AIDS Research (CBAR), Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Jonathan S Russell
- Center for Biostatistics in AIDS Research (CBAR), Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Sepideh Farhat
- Department of Pediatrics, Division of Adolescent Medicine, University of California, San Francisco, CA, USA
| | - Mark Scott
- Department of Pediatrics, Division of Adolescent Medicine, University of California, San Francisco, CA, USA
| | - Larry Magpantay
- Department of Obstetrics and Gynecology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Gordana Halec
- Department of Obstetrics and Gynecology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Caroline H Shiboski
- Department of Orofacial Sciences, School of Dentistry, University of California, San Francisco, CA, USA
| | - Mark I Ryder
- Department of Orofacial Sciences, School of Dentistry, University of California, San Francisco, CA, USA
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26
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Ko EJ, Helmold Hait S, Enyindah-Asonye G, Rahman MA, Hoang T, Robert-Guroff M. Replicating Adenovirus-SIV Immunization of Rhesus Macaques Induces Mucosal Dendritic Cell Activation and Function Leading to Rectal Immune Responses. Front Immunol 2019; 10:779. [PMID: 31031768 PMCID: PMC6473464 DOI: 10.3389/fimmu.2019.00779] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Accepted: 03/25/2019] [Indexed: 11/27/2022] Open
Abstract
Inducing strong mucosal immune responses by vaccination is important for providing protection against simian immunodeficiency virus (SIV). A replicating adenovirus type 5 host range mutant vector (Ad5hr) expressing SIV proteins induced mucosal immune responses in rectal tissue associated with delayed SIV acquisition in female rhesus macaques, but the initial mechanisms leading to the induced immunity have not been elucidated. As dendritic cells (DCs) are known to orchestrate both innate and adaptive effector immune cell responses, we investigated their role here. Rhesus macaques were immunized twice mucosally with a replicating Ad5hr expressing SIV Env, Gag, and Nef (Ad-SIV) or empty Ad5hr vector (Ad-Empty). DC subsets and their activation were examined in rectal tissue, blood, and LNs at 3 timepoints after each immunization. Plasmacytoid DCs, myeloid DCs, and Langerhans cells were significantly increased in the rectal mucosa, but only myeloid DCs were significantly increased in blood post-immunizations. All rectal DC subsets showed increased frequencies of cells expressing activation markers and cytokines post-immunization, blood DCs showed mixed results, and LN DCs showed few changes. Rectal DCs responded strongly to the vector rather than expressed SIV antigens, but rectal DC frequencies positively correlated with induced rectal antigen-specific memory T and B cells. These correlations were confirmed by in vitro co-cultures showing that rectal Ad-SIV DCs induced proliferation and antigen-specific cytokine production by autologous naïve T cells. Our results highlight the rapid response of DCs to Ad immunization and their role in mucosal immune activation and identify initial cellular mechanisms of the replicating Ad-SIV vaccine in the rhesus macaque model.
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Affiliation(s)
- Eun-Ju Ko
- Vaccine Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
| | - Sabrina Helmold Hait
- Vaccine Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
| | - Gospel Enyindah-Asonye
- Vaccine Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
| | - Mohammad Arif Rahman
- Vaccine Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
| | - Tanya Hoang
- Vaccine Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
| | - Marjorie Robert-Guroff
- Vaccine Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
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27
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Council OD, Joseph SB. Evolution of Host Target Cell Specificity During HIV-1 Infection. Curr HIV Res 2019; 16:13-20. [PMID: 29268687 DOI: 10.2174/1570162x16666171222105721] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 11/05/2017] [Accepted: 11/06/2017] [Indexed: 11/22/2022]
Abstract
BACKGROUND Many details of HIV-1 molecular virology have been translated into lifesaving antiviral drugs. Yet, we have an incomplete understanding of the cells in which HIV-1 replicates in untreated individuals and persists in during antiretroviral therapy. METHODS In this review we discuss how viral entry phenotypes have been characterized and the insights they have revealed about the target cells supporting HIV-1 replication. In addition, we will examine whether some HIV-1 variants have the ability to enter cells lacking CD4 (such as astrocytes) and the role that trans-infection plays in HIV-1 replication. RESULTS HIV-1 entry into a target cell is determined by whether the viral receptor (CD4) and the coreceptor (CCR5 or CXCR4) are expressed on that cell. Sustained HIV-1 replication in a cell type can produce viral lineages that are tuned to the CD4 density and coreceptor expressed on those cells; a fact that allows us to use Env protein entry phenotypes to infer information about the cells in which a viral lineage has been replicating and adapting. CONCLUSION We now recognize that HIV-1 variants can be divided into three classes representing the primary target cells of HIV-1; R5 T cell-tropic variants that are adapted to entering memory CD4+ T cells, X4 T cell-tropic variants that are adapted to entering naïve CD4+ T cells and Mtropic variants that are adapted to entering macrophages and possibly other cells that express low levels of CD4. While much progress has been made, the relative contribution that infection of different cell subsets makes to viral pathogenesis and persistence is still being unraveled.
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Affiliation(s)
- Olivia D Council
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Sarah B Joseph
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
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28
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Farid AH, Hussain I. A comparison between intraperitoneal injection and intranasal and oral inoculation of mink with Aleutian mink disease virus. Res Vet Sci 2019; 124:85-92. [PMID: 30856435 DOI: 10.1016/j.rvsc.2019.02.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 02/19/2019] [Accepted: 02/24/2019] [Indexed: 01/19/2023]
Abstract
Intranasal, with (INS) and without (IN) sedation, and oral inoculation were compared with intraperitoneal (IP) injection for establishing infection with a local isolate of Aleutian mink disease virus (AMDV) in 35 American mink. Blood samples were collected on 0, 21, 36 and 56 day post-inoculation (dpi). Antiviral-antibodies and viral DNA in plasma and tissues were measured by counter-immunoelectrophoresis (CIEP) and PCR, respectively. The presence of AMDV DNA was tested by PCR in saliva, rectal and fecal samples collected on 0, 6, 10, 15, 21, 28, 36 and 56 dpi. Animals were killed at 56 dpi, samples of six organs were tested for antibody and AMDV DNA, and samples of the lungs, liver, kidneys and heart were subjected to histology. Viral DNA was detected in the spleen, lungs and lymph nodes of all inoculated mink on 56 dpi, indicating that all inoculation routes caused infection in mink. Viral DNA and antibodies were detected in plasma of all IP and INS inoculated mink by 36 dpi, but some animals which were inoculated orally or via IN remained seronegative by 56 dpi. It was concluded that INS route was the most effective method for establishing infection in mink without breaking the integrity of the animals' anatomical barriers. Viremia was short-lived in some mink, whereas antibody production persisted in seroconverted animals during the duration of the experiment. Saliva, rectal and fecal samples did not accurately detect infection. Histologic lesions of AD were observed on the four organs of most mink.
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Affiliation(s)
- A Hossain Farid
- Department of Animal Science and Aquaculture, Dalhousie University Faculty of Agriculture, Truro, Nova Scotia B2N 5E3, Canada.
| | - Irshad Hussain
- Department of Animal Science and Aquaculture, Dalhousie University Faculty of Agriculture, Truro, Nova Scotia B2N 5E3, Canada
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29
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Mestecky J, Veazey R. Mucosal Immune System and HIV/SIV. ACTA ACUST UNITED AC 2019; 15:2-3. [PMID: 33223980 DOI: 10.2174/157339551501190307091523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Jiri Mestecky
- Department of Microbiology and Medicine, University of Alabama at Birmingham, Birmingham, AL, USA.,1 School of Medicine, Department of Immunology and Microbiology, Charles University, Prague, Czech Republic.,Institute of Microbiology, Czech Academy of Sciences, Prague, Czech Republic
| | - Ronald Veazey
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, New Orleans, LA,USA.,Division of Comparative Pathology, Tulane National Primate Research Center, Covington, LA, USA
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30
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Kozlowski PA, Aldovini A. Mucosal Vaccine Approaches for Prevention of HIV and SIV Transmission. CURRENT IMMUNOLOGY REVIEWS 2019; 15:102-122. [PMID: 31452652 PMCID: PMC6709706 DOI: 10.2174/1573395514666180605092054] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 04/19/2018] [Accepted: 05/30/2018] [Indexed: 02/06/2023]
Abstract
Optimal protective immunity to HIV will likely require that plasma cells, memory B cells and memory T cells be stationed in mucosal tissues at portals of viral entry. Mucosal vaccine administration is more effective than parenteral vaccine delivery for this purpose. The challenge has been to achieve efficient vaccine uptake at mucosal surfaces, and to identify safe and effective adjuvants, especially for mucosally administered HIV envelope protein immunogens. Here, we discuss strategies used to deliver potential HIV vaccine candidates in the intestine, respiratory tract, and male and female genital tract of humans and nonhuman primates. We also review mucosal adjuvants, including Toll-like receptor agonists, which may adjuvant both mucosal humoral and cellular immune responses to HIV protein immunogens.
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Affiliation(s)
- Pamela A. Kozlowski
- Department of Microbiology, Immunology and Parasitology, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA
| | - Anna Aldovini
- Department of Medicine, and Harvard Medical School, Boston Children’s Hospital, Department of Pediatrics, Boston MA, 02115, USA
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31
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Veazey RS. Intestinal CD4 Depletion in HIV / SIV Infection. CURRENT IMMUNOLOGY REVIEWS 2019; 15:76-91. [PMID: 31431807 PMCID: PMC6701936 DOI: 10.2174/1573395514666180605083448] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 04/12/2018] [Accepted: 05/18/2018] [Indexed: 12/28/2022]
Abstract
Among the most significant findings in the pathogenesis of HIV infection was the discovery that almost total depletion of intestinal CD4+ T cells occurs rapidly after SIV or HIV infection, regardless of the route of exposure, and long before CD4+ T cell losses occur in blood or lymph nodes. Since these seminal discoveries, we have learned much about mucosal and systemic CD4+ T cells, and found several key differences between the circulating and intestinal CD4+ T cell subsets, both in phenotype, relative proportions, and functional capabilities. Further, specific subsets of CD4+ T cells are selectively targeted and eliminated first, especially cells critically important for initiating primary immune responses, and for maintenance of mucosal integrity (Th1, Th17, and Th22 cells). This simultaneously results in loss of innate immune responses, and loss of mucosal integrity, resulting in mucosal, and systemic immune activation that drives proliferation and activation of new target cells throughout the course of infection. The propensity for the SIV/HIV to infect and efficiently replicate in specific cells also permits viral persistence, as the mucosal and systemic activation that ensues continues to damage mucosal barriers, resulting in continued influx of target cells to maintain viral replication. Finally, infection and elimination of recently activated and proliferating CD4+ T cells, and infection and dysregulation of Tfh and other key CD4+ T cell results in hyperactive, yet non-protective immune responses that support active viral replication and evolution, and thus persistence in host tissue reservoirs, all of which continue to challenge our efforts to design effective vaccine or cure strategies.
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Affiliation(s)
- Ronald S. Veazey
- Division of Comparative Pathology, Tulane National Primate Research Center, Covington, LA
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, New Orleans, LA, USA
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32
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Lopez E, Shattock RJ, Kent SJ, Chung AW. The Multifaceted Nature of Immunoglobulin A and Its Complex Role in HIV. AIDS Res Hum Retroviruses 2018; 34:727-738. [PMID: 30056749 DOI: 10.1089/aid.2018.0099] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
IgA is the most abundant immunoglobulin in mucosal secretions, and understanding the role of IgA in both protection from HIV acquisition and modulation of HIV disease progression is a field of considerable controversy and renewed research interest. Analysis of the RV144 clinical trial associated plasma HIV envelope-specific monomeric IgA from vaccines with reduced vaccine efficacy. The RV144 trial, however, only assessed for plasma IgA, which was not further subclassed, and the role of mucosal IgA was not addressed as mucosal samples were not collected. On the other hand, several studies have detected envelope-specific IgA in mucosal secretions of highly exposed persistently seronegative cohorts, while recent macaque simian-HIV passive immunization studies have suggested a potentially protective role for mucosal IgA. It is well established that total IgA in serum appears to correlate with HIV disease progression. In contrast, a selective deficit of anti-HIV IgA responses in HIV infection is apparent, with a number of recent studies beginning to elucidate the mechanisms behind these dysfunctional IgA responses. In this review, we highlight the dichotomy that exists in the literature as to whether anti-HIV IgA is protective or harmful to the host. Herein, we emphasize the importance of distinguishing between monomeric, multimeric, and isoforms of IgA and review what is known about the complex and diverse interactions of various molecular forms of IgA with HIV in both the systemic circulation and mucosal compartments.
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Affiliation(s)
- Ester Lopez
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, The University of Melbourne, Parkville, Australia
| | - Robin J. Shattock
- Mucosal Infection and Immunity Group, Department of Medicine, Imperial College London, London, United Kingdom
| | - Stephen J. Kent
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, The University of Melbourne, Parkville, Australia
- Infectious Diseases Department, Melbourne Sexual Health Centre, Alfred Health, Central Clinical School, Monash University, Melbourne, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Melbourne, Melbourne, Australia
| | - Amy W. Chung
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, The University of Melbourne, Parkville, Australia
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33
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Qiao J, Zhao C, Liu J, Du Y. Design and synthesis of selenazole-substituted ritonavir analogs. Bioorg Med Chem Lett 2018; 28:2379-2381. [DOI: 10.1016/j.bmcl.2018.06.027] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 06/01/2018] [Accepted: 06/14/2018] [Indexed: 11/25/2022]
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34
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Hapgood JP, Kaushic C, Hel Z. Hormonal Contraception and HIV-1 Acquisition: Biological Mechanisms. Endocr Rev 2018; 39:36-78. [PMID: 29309550 PMCID: PMC5807094 DOI: 10.1210/er.2017-00103] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 11/27/2017] [Indexed: 12/12/2022]
Abstract
Access to effective affordable contraception is critical for individual and public health. A wide range of hormonal contraceptives (HCs), which differ in composition, concentration of the progestin component, frequency of dosage, and method of administration, is currently available globally. However, the options are rather limited in settings with restricted economic resources that frequently overlap with areas of high HIV-1 prevalence. The predominant contraceptive used in sub-Saharan Africa is the progestin-only three-monthly injectable depot medroxyprogesterone acetate. Determination of whether HCs affect HIV-1 acquisition has been hampered by behavioral differences potentially confounding clinical observational data. Meta-analysis of these studies shows a significant association between depot medroxyprogesterone acetate use and increased risk of HIV-1 acquisition, raising important concerns. No association was found for combined oral contraceptives containing levonorgestrel, nor for the two-monthly injectable contraceptive norethisterone enanthate, although data for norethisterone enanthate are limited. Susceptibility to HIV-1 and other sexually transmitted infections may, however, be dependent on the type of progestin present in the formulation. Several underlying biological mechanisms that may mediate the effect of HCs on HIV-1 and other sexually transmitted infection acquisition have been identified in clinical, animal, and ex vivo studies. A substantial gap exists in the translation of basic research into clinical practice and public health policy. To bridge this gap, we review the current knowledge of underlying mechanisms and biological effects of commonly used progestins. The review sheds light on issues critical for an informed choice of progestins for the identification of safe, effective, acceptable, and affordable contraceptive methods.
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Affiliation(s)
- Janet P Hapgood
- Department of Molecular and Cell Biology, University of Cape Town, Cape Town, South Africa.,Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
| | - Charu Kaushic
- Department of Pathology and Molecular Medicine, McMaster University, Ontario, Canada.,McMaster Immunology Research Centre, McMaster University, Hamilton, Ontario, Canada
| | - Zdenek Hel
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama.,Center for AIDS Research, University of Alabama at Birmingham, Birmingham, Alabama
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35
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Frequency of Human CD45+ Target Cells is a Key Determinant of Intravaginal HIV-1 Infection in Humanized Mice. Sci Rep 2017; 7:15263. [PMID: 29127409 PMCID: PMC5681573 DOI: 10.1038/s41598-017-15630-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 10/31/2017] [Indexed: 02/08/2023] Open
Abstract
Approximately 40% of HIV-1 infections occur in the female genital tract (FGT), primarily through heterosexual transmission. FGT factors determining outcome of HIV-1 exposure are incompletely understood, limiting prevention strategies. Here, humanized NOD-Rag1−/− γc−/− mice differentially reconstituted with human CD34+ -enriched hematopoietic stem cells (Hu-mice), were used to assess target cell frequency and viral inoculation dose as determinants of HIV-1 infection following intravaginal (IVAG) challenge. Results revealed a significant correlation between HIV-1 susceptibility and hCD45+ target cells in the blood, which correlated with presence of target cells in the FGT, in the absence of local inflammation. HIV-1 plasma load was associated with viral dose at inoculation and frequency of target cells. Events following IVAG HIV-1 infection; viral dissemination and CD4 depletion, were not affected by these parameters. Following IVAG inoculation, HIV-1 titres peaked, then declined in vaginal lavage while plasma showed a reciprocal pattern. The greatest frequency of HIV-1-infected (p24+) cells were found one week post-infection in the FGT versus blood and spleen, suggesting local viral amplification. Five weeks post-infection, HIV-1 disseminated into systemic tissues, in a dose-dependent manner, followed by depletion of hCD45+ CD3+ CD4+ cells. Results indicate target cell frequency in the Hu-mouse FGT is a key determinant of HIV-1 infection, which might provide a useful target for prophylaxis in women.
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36
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Wijesundara DK, Ranasinghe C, Grubor-Bauk B, Gowans EJ. Emerging Targets for Developing T Cell-Mediated Vaccines for Human Immunodeficiency Virus (HIV)-1. Front Microbiol 2017; 8:2091. [PMID: 29118747 PMCID: PMC5660999 DOI: 10.3389/fmicb.2017.02091] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Accepted: 10/11/2017] [Indexed: 11/13/2022] Open
Abstract
Human immunodeficiency virus (HIV)-1 has infected >75 million individuals globally, and, according to the UN, is responsible for ~2.1 million new infections and 1.1 million deaths each year. Currently, there are ~37 million individuals with HIV infection and the epidemic has already resulted in 35 million deaths. Despite the advances of anti-retroviral therapy (ART), a cost-effective vaccine remains the best long-term solution to end the HIV-1 epidemic especially given that the vast majority of infected individuals live in poor socio-economic regions of the world such as Sub-Saharan Africa which limits their accessibility to ART. The modest efficacy of the RV144 Thai trial provides hope that a vaccine for HIV-1 is possible, but as markers for sterilizing immunity are unknown, the design of an effective vaccine is empirical, although broadly cross-reactive neutralizing antibodies (bNAb) that can neutralize various quasispecies of HIV-1 are considered crucial. Since HIV-1 transmission often occurs at the genito-rectal mucosa and is cell-associated, there is a need to develop vaccines that can elicit CD8+ T cell immunity with the capacity to kill virus infected cells at the genito-rectal mucosa and the gut. Here we discuss the recent progress made in developing T cell-mediated vaccines for HIV-1 and emphasize the need to elicit mucosal tissue-resident memory CD8+ T (CD8+ Trm) cells. CD8+ Trm cells will likely form a robust front-line defense against HIV-1 and eliminate transmitter/founder virus-infected cells which are responsible for propagating HIV-1 infections following transmission in vast majority of cases.
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Affiliation(s)
- Danushka K Wijesundara
- Virology Laboratory, Basil Hetzel Institute for Translational Medicine, Discipline of Surgery, University of Adelaide, Adelaide, SA, Australia
| | - Charani Ranasinghe
- Molecular Mucosal Vaccine Immunology Group, The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia
| | - Branka Grubor-Bauk
- Virology Laboratory, Basil Hetzel Institute for Translational Medicine, Discipline of Surgery, University of Adelaide, Adelaide, SA, Australia
| | - Eric J Gowans
- Virology Laboratory, Basil Hetzel Institute for Translational Medicine, Discipline of Surgery, University of Adelaide, Adelaide, SA, Australia
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37
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Scheri GC, Fard SN, Schietroma I, Mastrangelo A, Pinacchio C, Giustini N, Serafino S, De Girolamo G, Cavallari EN, Statzu M, Laghi L, Vullo A, Ceccarelli G, Vullo V, d'Ettorre G. Modulation of Tryptophan/Serotonin Pathway by Probiotic Supplementation in Human Immunodeficiency Virus-Positive Patients: Preliminary Results of a New Study Approach. Int J Tryptophan Res 2017; 10:1178646917710668. [PMID: 28607543 PMCID: PMC5457170 DOI: 10.1177/1178646917710668] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 04/07/2017] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND To date, no data are available regarding the effects of probiotics on the pathway of tryptophan/serotonin metabolism among human immunodeficiency virus (HIV) 1-infected individuals. Because a condition of dysbiosis might be responsible for the altered use of tryptophan described in this population, the aim of this study was to investigate the link between probiotic supplementation and serotonin levels in combined antiretroviral therapy-treated patients and the subsistence of an interplay with inflammation. METHODS We conducted a pilot study that included 8 HIV-positive subjects. We collected blood and fecal samples before and after 6 months of probiotic supplementation, to measure the level of serotonin in serum and tryptophan in stool, the expression of CD38 and HLA-DR on peripheral CD4+ T lymphocytes (as immune activation markers), the expression of indoleamine 2,3-dioxygenase 1 messenger RNA (mRNA) and IFN-γ mRNA (as markers of tryptophan metabolism and systemic inflammation). RESULTS After probiotic supplementation, we observed a significant increase in concentration of serum serotonin (P = .008) and a decreased level of tryptophan in plasma. Moreover, a significant reduction in CD38 and HLA-DR expression on the surface of peripheral CD4+ T cells (P = .008) and a reduced expression of indoleamine 2,3-dioxygenase 1 mRNA on peripheral blood mononuclear cells (P = .04) were observed. CONCLUSIONS Considering that this probiotic (Vivomixx® in EU; Visbiome® in USA) has an influence on tryptophan metabolism, larger studies on this topic are needed.
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Affiliation(s)
- Giuseppe Corano Scheri
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
| | - Saeid Najafi Fard
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
| | - Ivan Schietroma
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
| | - Andrea Mastrangelo
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
| | - Claudia Pinacchio
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
| | - Noemi Giustini
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
| | - Sara Serafino
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
| | - Gabriella De Girolamo
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
| | | | - Maura Statzu
- Laboratory of Virology, Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Luca Laghi
- Department of Agro-Food Science and Technology, University of Bologna, Bologna, Italy
| | - Annamaria Vullo
- Department of Anatomical, Histological, Forensic and Orthopaedic Sciences,Sapienza University of Rome, Rome, Italy
| | - Giancarlo Ceccarelli
- Department of Public Health and Infectious Diseases, Azienda Policlinico Umberto I, Rome, Italy
| | - Vincenzo Vullo
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
| | - Gabriella d'Ettorre
- Department of Public Health and Infectious Diseases, Azienda Policlinico Umberto I, Rome, Italy
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38
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Broadly neutralizing antibodies suppress post-transcytosis HIV-1 infectivity. Mucosal Immunol 2017; 10:814-826. [PMID: 27966557 DOI: 10.1038/mi.2016.106] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Accepted: 10/25/2016] [Indexed: 02/04/2023]
Abstract
Broadly neutralizing antibodies (bNAbs) offer promising opportunities for preventing HIV-1 infection in humans. Immunoprophylaxis with potent bNAbs efficiently protects non-human primates from mucosal transmission even after repeated challenges. However, the precise mechanisms of bNAb-mediated viral inhibition in mucosal tissues are currently unknown. Here, we show that immunoglobulin (Ig)G and IgA bNAbs do not interfere with the endocytic transport of HIV-1 across epithelial cells, a process referred to as transcytosis. Instead, both viruses and antibodies are translocated to the basal pole of epithelial cells, possibly in the form of an immune complex. Importantly, as opposed to free virions, viral particles bound by bNAbs are no longer infectious after transepithelial transit. Post-transcytosis neutralization activity of bNAbs displays comparable inhibitory concentrations as those measured in classical neutralization assays. Thus, bNAbs do not block the transport of incoming HIV-1 viruses across the mucosal epithelium but rather neutralize the transcytosed virions, highlighting their efficient prophylactic and protective activity in vivo.
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39
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Becerra JC, Bildstein LS, Gach JS. Recent Insights into the HIV/AIDS Pandemic. MICROBIAL CELL (GRAZ, AUSTRIA) 2016; 3:451-475. [PMID: 28357381 PMCID: PMC5354571 DOI: 10.15698/mic2016.09.529] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 04/27/2016] [Indexed: 12/21/2022]
Abstract
Etiology, transmission and protection: Transmission of HIV, the causative agent of AIDS, occurs predominantly through bodily fluids. Factors that significantly alter the risk of HIV transmission include male circumcision, condom use, high viral load, and the presence of other sexually transmitted diseases. Pathology/Symptomatology: HIV infects preferentially CD4+ T lymphocytes, and Monocytes. Because of their central role in regulating the immune response, depletion of CD4+ T cells renders the infected individual incapable of adequately responding to microorganisms otherwise inconsequential. Epidemiology, incidence and prevalence: New HIV infections affect predominantly young heterosexual women and homosexual men. While the mortality rates of AIDS related causes have decreased globally in recent years due to the use of highly active antiretroviral therapy (HAART) treatment, a vaccine remains an elusive goal. Treatment and curability: For those afflicted HIV infection remains a serious illness. Nonetheless, the use of advanced therapeutics have transformed a dire scenario into a chronic condition with near average life spans. When to apply those remedies appears to be as important as the remedies themselves. The high rate of HIV replication and the ability to generate variants are central to the viral survival strategy and major barriers to be overcome. Molecular mechanisms of infection: In this review, we assemble new details on the molecular events from the attachment of the virus, to the assembly and release of the viral progeny. Yet, much remains to be learned as understanding of the molecular mechanisms used in viral replication and the measures engaged in the evasion of immune surveillance will be important to develop effective interventions to address the global HIV pandemic.
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Affiliation(s)
- Juan C. Becerra
- Department of Medicine, Division of Infectious Diseases, University
of California, Irvine, Irvine, CA 92697, USA
| | | | - Johannes S. Gach
- Department of Medicine, Division of Infectious Diseases, University
of California, Irvine, Irvine, CA 92697, USA
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40
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Mukhopadhya I, Murray GI, Duncan L, Yuecel R, Shattock R, Kelly C, Iannelli F, Pozzi G, El-Omar EM, Hold GL, Hijazi K. Transporters for Antiretroviral Drugs in Colorectal CD4+ T Cells and Circulating α4β7 Integrin CD4+ T Cells: Implications for HIV Microbicides. Mol Pharm 2016; 13:3334-40. [PMID: 27467446 DOI: 10.1021/acs.molpharmaceut.6b00351] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
CD4+ T lymphocytes in the colorectal mucosa are key in HIV-1 transmission and dissemination. As such they are also the primary target for antiretroviral (ARV)-based rectal microbicides for pre-exposure prophylaxis. Drug transporters expressed in mucosal CD4+ T cells determine ARV distribution across the cell membrane and, most likely, efficacy of microbicides. We describe transporters for antiretroviral drugs in colorectal mucosal CD4+ T lymphocytes and compare gene expression with circulating α4β7+CD4+ T cells, which traffic to the intestine and have been shown to be preferentially infected by HIV-1. Purified total CD4+ T cells were obtained from colorectal tissue and blood samples by magnetic separation. CD4+ T cells expressing α4β7 integrin were isolated by fluorescence-activated cell sorting from peripheral blood mononuclear cells of healthy volunteers. Expressions of 15 efflux and uptake drug transporter genes were quantified using Taqman qPCR assays. Expression of efflux transporters MRP3, MRP5, and BCRP and uptake transporter CNT2 were significantly higher in colorectal CD4+ T cells compared to circulating CD4+ T cells (p = 0.01-0.03). Conversely, circulating α4β7+CD4+ T cells demonstrated significantly higher expression of OATPD compared to colorectal CD4+ T cells (p = 0.001). To the best of our knowledge this is the first report of drug transporter gene expression in colorectal CD4+ and peripheral α4β7+CD4+ T cells. The qualitative and quantitative differences in drug transporter gene expression profiles between α4β7+CD4+ T cells and total mucosal CD4+ T cells may have significant implications for the efficacy of rectally delivered ARV-microbicides. Most notably, we have identified efflux drug transporters that could be targeted by selective inhibitors or beneficial drug-drug interactions to enhance intracellular accumulation of antiretroviral drugs.
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Affiliation(s)
- Indrani Mukhopadhya
- University of Aberdeen Dental School and Hospital , Aberdeen AB25 2ZR, U.K.,Institute of Medical Sciences, University of Aberdeen , Aberdeen AB25 2ZD, U.K
| | - Graeme I Murray
- Department of Pathology, School of Medicine & Dentistry, University of Aberdeen , Aberdeen AB25 2ZD, U.K
| | - Linda Duncan
- Institute of Medical Sciences, University of Aberdeen , Aberdeen AB25 2ZD, U.K
| | - Raif Yuecel
- Institute of Medical Sciences, University of Aberdeen , Aberdeen AB25 2ZD, U.K
| | - Robin Shattock
- Mucosal Infection & Immunity Group, Section of Infectious Diseases, Imperial College , London W2 1PG, U.K
| | - Charles Kelly
- Mucosal & Salivary Biology, King's College London, Dental Institute , London SE1 1UL, U.K
| | - Francesco Iannelli
- Laboratory of Molecular Microbiology and Biotechnology, Department of Medical Biotechnologies, University of Siena , Siena 53100, Italy
| | - Gianni Pozzi
- Laboratory of Molecular Microbiology and Biotechnology, Department of Medical Biotechnologies, University of Siena , Siena 53100, Italy
| | - Emad M El-Omar
- Institute of Medical Sciences, University of Aberdeen , Aberdeen AB25 2ZD, U.K
| | - Georgina L Hold
- Institute of Medical Sciences, University of Aberdeen , Aberdeen AB25 2ZD, U.K
| | - Karolin Hijazi
- University of Aberdeen Dental School and Hospital , Aberdeen AB25 2ZR, U.K.,Institute of Medical Sciences, University of Aberdeen , Aberdeen AB25 2ZD, U.K
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41
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Swaims-Kohlmeier A, Haaland RE, Haddad LB, Sheth AN, Evans-Strickfaden T, Lupo LD, Cordes S, Aguirre AJ, Lupoli KA, Chen CY, Ofotukun I, Hart CE, Kohlmeier JE. Progesterone Levels Associate with a Novel Population of CCR5+CD38+ CD4 T Cells Resident in the Genital Mucosa with Lymphoid Trafficking Potential. THE JOURNAL OF IMMUNOLOGY 2016; 197:368-76. [PMID: 27233960 DOI: 10.4049/jimmunol.1502628] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Accepted: 04/27/2016] [Indexed: 01/01/2023]
Abstract
The female genital tract (FGT) provides a means of entry to pathogens, including HIV, yet immune cell populations at this barrier between host and environment are not well defined. We initiated a study of healthy women to characterize resident T cell populations in the lower FGT from lavage and patient-matched peripheral blood to investigate potential mechanisms of HIV sexual transmission. Surprisingly, we observed FGT CD4 T cell populations were primarily CCR7(hi), consistent with a central memory or recirculating memory T cell phenotype. In addition, roughly half of these CCR7(hi) CD4 T cells expressed CD69, consistent with resident memory T cells, whereas the remaining CCR7(hi) CD4 T cells lacked CD69 expression, consistent with recirculating memory CD4 T cells that traffic between peripheral tissues and lymphoid sites. HIV susceptibility markers CCR5 and CD38 were increased on FGT CCR7(hi) CD4 T cells compared with blood, yet migration to the lymphoid homing chemokines CCL19 and CCL21 was maintained. Infection with GFP-HIV showed that FGT CCR7(hi) memory CD4 T cells are susceptible HIV targets, and productive infection of CCR7(hi) memory T cells did not alter chemotaxis to CCL19 and CCL21. Variations of resident CCR7(hi) FGT CD4 T cell populations were detected during the luteal phase of the menstrual cycle, and longitudinal analysis showed the frequency of this population positively correlated to progesterone levels. These data provide evidence women may acquire HIV through local infection of migratory CCR7(hi) CD4 T cells, and progesterone levels predict opportunities for HIV to access these novel target cells.
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Affiliation(s)
- Alison Swaims-Kohlmeier
- Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, GA 30329
| | - Richard E Haaland
- Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, GA 30329
| | - Lisa B Haddad
- Department of Gynecology and Obstetrics, Emory University School of Medicine, Atlanta, GA 30322
| | - Anandi N Sheth
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, GA 30322
| | - Tammy Evans-Strickfaden
- Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, GA 30329
| | - L Davis Lupo
- Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, GA 30329
| | - Sarah Cordes
- Department of Gynecology and Obstetrics, Emory University School of Medicine, Atlanta, GA 30322
| | - Alfredo J Aguirre
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, GA 30322
| | - Kathryn A Lupoli
- Division of STD Prevention, Centers for Disease Control and Prevention, Atlanta, GA 30329; and
| | - Cheng-Yen Chen
- Division of STD Prevention, Centers for Disease Control and Prevention, Atlanta, GA 30329; and
| | - Igho Ofotukun
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, GA 30322
| | - Clyde E Hart
- Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, GA 30329
| | - Jacob E Kohlmeier
- Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, GA 30322
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González Álvarez DA, López Cortés LF, Cordero E. Impact of HIV on the severity of influenza. Expert Rev Respir Med 2016; 10:463-472. [PMID: 26918376 DOI: 10.1586/17476348.2016.1157474] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Despite current antiretroviral therapy, HIV/AIDS is one of the most prelevant problems in healthcare worldwide. Similarly, influenza viruses are causes of epidemics outbreaks. HIV-infected patients are considered a high risk group for severe influenza infection, although several recent observational studies suggest that not all HIV-infected patients are equally susceptible to complications and that these patients should be stratified by their immunodeficiency status and other factors (such as smoking or comorbidities). Here, we have compiled the most recent data on the impact that HIV has on influenza infection.
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Affiliation(s)
| | | | - Elisa Cordero
- a Infectious Diseases Unit , University Hospital Virgen del Rocío , Sevilla , Spain
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43
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HIV-1 strategies to overcome the immune system by evading and invading innate immune system. HIV & AIDS REVIEW 2016. [DOI: 10.1016/j.hivar.2015.07.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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44
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Ribeiro CMS, Sarrami-Forooshani R, Geijtenbeek TBH. HIV-1 border patrols: Langerhans cells control antiviral responses and viral transmission. Future Virol 2015. [DOI: 10.2217/fvl.15.79] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Langerhans cells (LCs) reside in the mucosal epithelia and are refractory to HIV-1 infection; HIV-1 capture by C-type lectin receptor langerin and subsequent targeting to Birbeck granules prevents infection. Furthermore, LCs restrict transmission of CXCR4-using HIV-1 variants, which underscores the role of immature LCs as gatekeepers in the selection of HIV-1 variants. Interaction of langerin on LCs with hyaluronic acid on dendritic cells facilitates cross-presentation of HIV-1 to CD8+ T cells. Activation of LCs upon inflammation bypasses the langerin-dependent barrier, which favors cross-presentation and increases susceptibility of LCs to HIV-1 infection. These recent developments not only highlight the plasticity of LCs but also define an important role for LC-dendritic cell crosstalk at the periphery in directing adaptive immune responses to viruses.
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Affiliation(s)
- Carla MS Ribeiro
- Department of Experimental Immunology, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
| | - Ramin Sarrami-Forooshani
- Department of Experimental Immunology, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
| | - Teunis BH Geijtenbeek
- Department of Experimental Immunology, Academic Medical Center, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
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45
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Su B, Peressin M, Ducloy C, Penichon J, Mayr LM, Laumond G, Schmidt S, Decoville T, Moog C. Short Communication: Exploring Antibody Potential as Prophylactic/Therapeutic Strategies for Prevention of Early Mucosal HIV-1 Infection. AIDS Res Hum Retroviruses 2015; 31:1187-91. [PMID: 26252799 DOI: 10.1089/aid.2015.0041] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Mucosal tissues are the predominant sites for genital HIV-1 transmission. We investigated the mechanisms by which broadly neutralizing antibodies (bNAbs) inhibit HIV-1 replication in a coculture model including primary mucosal dendritic cells (DCs), such as Langerhans cells, interstitial dendritic cells, and CD4(+) T lymphocytes. We show that bNAbs efficiently prevent HIV-1 infection by inhibiting HIV-1 transmission to CD4(+) T lymphocytes. This inhibition of cell-to-cell transmission was observed with equal potency as the inhibition of cell-free infection of primary CD4(+) T lymphocytes. In addition, a decrease in HIV-1 replication in DCs and the induction of DC maturation were detected. This additional inhibition was Fc mediated as it was blocked by the use of specific anti-FcγR monoclonal Abs. The DC maturation by bNAbs during HIV transmission may contribute to mucosal protection. Therefore, multiple antibody-mediated inhibitory functions should be combined for the improvement of future preventive/therapeutic strategies to cure HIV.
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Affiliation(s)
- Bin Su
- INSERM UMR S_1109, Centre de Recherche en Immunologie et Hématologie, Faculté de Médecine, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France
| | - Maryse Peressin
- Centre d'investigation clinique/Service de neurologie, INSERM CIC-P1434, Hôpital de Hautepierre, Strasbourg, France
| | - Camille Ducloy
- INSERM UMR S_1109, Centre de Recherche en Immunologie et Hématologie, Faculté de Médecine, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France
| | - Julien Penichon
- INSERM UMR S_1109, Centre de Recherche en Immunologie et Hématologie, Faculté de Médecine, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France
| | - Luzia M. Mayr
- INSERM UMR S_1109, Centre de Recherche en Immunologie et Hématologie, Faculté de Médecine, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France
| | - Géraldine Laumond
- INSERM UMR S_1109, Centre de Recherche en Immunologie et Hématologie, Faculté de Médecine, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France
| | - Sylvie Schmidt
- INSERM UMR S_1109, Centre de Recherche en Immunologie et Hématologie, Faculté de Médecine, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France
| | - Thomas Decoville
- INSERM UMR S_1109, Centre de Recherche en Immunologie et Hématologie, Faculté de Médecine, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France
- Vaccine Research Institute, Hôpital Henri Mondor, Créteil, France
| | - Christiane Moog
- INSERM UMR S_1109, Centre de Recherche en Immunologie et Hématologie, Faculté de Médecine, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France
- Vaccine Research Institute, Hôpital Henri Mondor, Créteil, France
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Peterson CW, Haworth KG, Polacino P, Huang ML, Sykes C, Obenza WM, Repetto AC, Kashuba A, Bumgarner R, DeRosa SC, Woolfrey AE, Jerome KR, Mullins JI, Hu SL, Kiem HP. Lack of viral control and development of combination antiretroviral therapy escape mutations in macaques after bone marrow transplantation. AIDS 2015; 29:1597-606. [PMID: 26372270 PMCID: PMC4572605 DOI: 10.1097/qad.0000000000000702] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE We have previously demonstrated robust control of simian/human immunodeficiency virus (SHIV1157-ipd3N4) viremia following administration of combination antiretroviral therapy (cART) in pigtailed macaques. Here, we sought to determine the safety of hematopoietic stem cell transplantation (HSCT) in cART-suppressed and unsuppressed animals. DESIGN We compared disease progression in animals challenged with SHIV 100 days post-transplant, to controls that underwent transplant following SHIV challenge and stable cART-dependent viral suppression. METHODS SHIV viral load, cART levels, and anti-SHIV antibodies were measured longitudinally from plasma/serum from each animal. Flow cytometry was used to assess T-cell subset frequencies in peripheral blood and the gastrointestinal tract. Deep sequencing was used to identify cART resistance mutations. RESULTS In control animals, virus challenge induced transient peak viremia, viral set point, and durable suppression by cART. Subsequent HSCT was not associated with adverse events in these animals. Post-transplant animals were challenged during acute recovery following HSCT, and displayed sustained peak viremia and cART resistance. Although post-transplant animals had comparable plasma levels of antiretroviral drugs and showed no evidence of enhanced infection of myeloid subsets in the periphery, they exhibited a drastic reduction in virus-specific antibody production and decreased T-cell counts. CONCLUSIONS These results suggest that virus challenge prior to complete transplant recovery impairs viral control and may promote drug resistance. These findings may also have implications for scheduled treatment interruption studies in patients on cART during post-HSCT recovery: premature scheduled treatment interruption could similarly result in lack of viral control and cART resistance.
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Affiliation(s)
- Christopher W Peterson
- aClinical Research Division, Fred Hutchinson Cancer Research Center bWashington National Primate Research Center, Seattle cVaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington dDivision of Pharmacotherapy and Experimental Therapeutics, University of North Carolina, Chapel Hill, North Carolina eDepartment of Microbiology fDepartment of Pediatrics gDepartment of Laboratory Medicine hDepartment of Medicine iDepartment of Pharmaceutics jDepartment of Pathology, University of Washington, Seattle, Washington, USA. *Christopher W. Peterson and Kevin G. Haworth contributed equally to the writing of this article
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47
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Poudrier J, Soulas C, Chagnon-Choquet J, Burdo T, Autissier P, Oskar K, Williams KC, Roger M. High expression levels of BLyS/BAFF by blood dendritic cells and granulocytes are associated with B-cell dysregulation in SIV-infected rhesus macaques. PLoS One 2015; 10:e0131513. [PMID: 26107380 PMCID: PMC4479440 DOI: 10.1371/journal.pone.0131513] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Accepted: 06/03/2015] [Indexed: 12/22/2022] Open
Abstract
Dendritic cells (DCs) modulate B-cell survival and differentiation, mainly through production of growth factors such as B lymphocyte stimulator (BLyS/BAFF). In recent longitudinal studies involving HIV-1-infected individuals with different rates of disease progression, we have shown that DCs were altered in number and phenotype in the context of HIV-1 disease progression and B-cell dysregulations were associated with increased BLyS/BAFF expression in plasma and by blood myeloid DCs (mDCs) in rapid and classic progressors but not in HIV-1-elite controllers (EC). Suggesting that the extent to which HIV-1 disease progression is controlled may be linked to BLyS/BAFF expression status and the capacity to orchestrate B-cell responses. Herein, longitudinal analyses of simian immunodeficiency virus (SIV)-infected rhesus macaques also revealed increased expression of BLyS/BAFF by blood mDCs as soon as day 8 and throughout infection. Strikingly, granulocytes presented the highest BLyS/BAFF expression profile in the blood of SIV-infected macaques. BLyS/BAFF levels were also increased in plasma and correlated with viral loads. Consequently, these SIV-infected animals had plasma hyperglobulinemia and reduced blood B-cell numbers with altered population frequencies. These data underscore that BLyS/BAFF is associated with immune dysregulation in SIV-infected rhesus macaques and suggest that BLyS/BAFF is a key regulator of immune activation that is highly conserved among primates. These findings emphasize the potential importance of this SIV-infected primate model to test whether blocking excess BLyS/BAFF has an effect on the overall inflammatory burden and immune restoration.
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Affiliation(s)
- Johanne Poudrier
- Laboratoire d’immunogénétique, Centre de Recherche du Centre Hospitalier de l’Université de Montréal (CRCHUM), Montréal, Canada
- Département de Microbiologie, Infectiologie et Immunologie de l‘Université de Montréal, Montréal, Canada
- * E-mail: (JP); (MR)
| | | | - Josiane Chagnon-Choquet
- Laboratoire d’immunogénétique, Centre de Recherche du Centre Hospitalier de l’Université de Montréal (CRCHUM), Montréal, Canada
- Département de Microbiologie, Infectiologie et Immunologie de l‘Université de Montréal, Montréal, Canada
| | - Tricia Burdo
- Boston College, Boston, MA, United States of America
| | | | - Kathryn Oskar
- Boston College, Boston, MA, United States of America
| | | | - Michel Roger
- Laboratoire d’immunogénétique, Centre de Recherche du Centre Hospitalier de l’Université de Montréal (CRCHUM), Montréal, Canada
- Département de Microbiologie, Infectiologie et Immunologie de l‘Université de Montréal, Montréal, Canada
- * E-mail: (JP); (MR)
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48
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Cho JL, Medoff BD. Lung T cells in HIV infection. Driven to exhaustion? Am J Respir Crit Care Med 2015; 191:370-1. [PMID: 25679103 DOI: 10.1164/rccm.201501-0011ed] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Josalyn L Cho
- 1 Division of Pulmonary and Critical Care Medicine Massachusetts General Hospital and Harvard Medical School Boston, Massachusetts and
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49
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Fichorova RN, Mendonca K, Yamamoto HS, Murray R, Chandra N, Doncel GF. A quantitative multiplex nuclease protection assay reveals immunotoxicity gene expression profiles in the rabbit model for vaginal drug safety evaluation. Toxicol Appl Pharmacol 2015; 285:198-206. [PMID: 25818602 DOI: 10.1016/j.taap.2015.02.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Revised: 02/12/2015] [Accepted: 02/17/2015] [Indexed: 12/21/2022]
Abstract
Any vaginal product that alters the mucosal environment and impairs the immune barrier increases the risk of sexually transmitted infections, especially HIV infection, which thrives on mucosal damage and inflammation. The FDA-recommended rabbit vaginal irritation (RVI) model serves as a first line selection tool for vaginal products; however, for decades it has been limited to histopathology scoring, insufficient to select safe anti-HIV microbicides. In this study we incorporate to the RVI model a novel quantitative nuclease protection assay (qNPA) to quantify mRNA levels of 25 genes representing leukocyte differentiation markers, toll-like receptors (TLR), cytokines, chemokines, epithelial repair, microbicidal and vascular markers, by designing two multiplex arrays. Tissue sections were obtained from 36 rabbits (6 per treatment arm) after 14 daily applications of a placebo gel, saline, 4% nonoxynol-9 (N-9), and three combinations of the anti-HIV microbicides tenofovir (TFV) and UC781 in escalating concentrations (highest: 10% TFV+2.5%UC781). Results showed that increased expression levels of toll-like receptor (TLR)-4, interleukin (IL)-1β, CXCL8, epithelial membrane protein (EMP)-1 (P<0.05), and decreased levels of TLR2 (P<0.05), TLR3 and bactericidal permeability increasing protein (BPI) (P<0.001) were associated with cervicovaginal mucosal alteration (histopathology). Seven markers showed a significant linear trend predicting epithelial damage (up with CD4, IL-1β, CXCL8, CCL2, CCL21, EMP1 and down with BPI). Despite the low tissue damage RVI scores, the high-dose microbicide combination gel caused activation of HIV host cells (SLC and CD4) while N-9 caused proinflammatory gene upregulation (IL-8 and TLR4) suggesting a potential for increasing risk of HIV via different mechanisms depending on the chemical nature of the test product.
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Affiliation(s)
- Raina N Fichorova
- Laboratory of Genital Tract Biology, Department of Obstetrics, Gynecology and Reproductive Biology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.
| | - Kevin Mendonca
- Laboratory of Genital Tract Biology, Department of Obstetrics, Gynecology and Reproductive Biology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Hidemi S Yamamoto
- Laboratory of Genital Tract Biology, Department of Obstetrics, Gynecology and Reproductive Biology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Ryan Murray
- Laboratory of Genital Tract Biology, Department of Obstetrics, Gynecology and Reproductive Biology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Neelima Chandra
- CONRAD, Department of Obstetrics and Gynecology, Eastern Virginia Medical School, Norfolk, VA, USA
| | - Gustavo F Doncel
- CONRAD, Department of Obstetrics and Gynecology, Eastern Virginia Medical School, Norfolk, VA, USA
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50
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Nittayananta W, Tao R, Jiang L, Peng Y, Huang Y. Oral innate immunity in HIV infection in HAART era. J Oral Pathol Med 2015; 45:3-8. [PMID: 25639844 DOI: 10.1111/jop.12304] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/01/2014] [Indexed: 02/05/2023]
Abstract
Oral innate immunity, an important component in host defense and immune surveillance in the oral cavity, plays a crucial role in the regulation of oral health. As part of the innate immune system, epithelial cells lining oral mucosal surfaces not only provide a physical barrier but also produce different antimicrobial peptides, including human β-defensins (hBDs), secretory leukocyte protease inhibitor (SLPI), and various cytokines. These innate immune mediators help in maintaining oral homeostasis. When they are impaired either by local or systemic causes, various oral infections and malignancies may be developed. Human immunodeficiency virus (HIV) infection and other co-infections appear to have both direct and indirect effects on systemic and local innate immunity leading to the development of oral opportunistic infections and malignancies. Highly active antiretroviral therapy (HAART), the standard treatment of HIV infection, contributed to a global reduction of HIV-associated oral lesions. However, prolonged use of HAART may lead to adverse effects on the oral innate immunity resulting in the relapse of oral lesions. This review article focused on the roles of oral innate immunity in HIV infection in HAART era. The following five key questions were addressed: (i) What are the roles of oral innate immunity in health and disease?, (ii) What are the effects of HIV infection on oral innate immunity?, (iii) What are the roles of oral innate immunity against other co-infections?, (iv) What are the effects of HAART on oral innate immunity?, and (v) Is oral innate immunity enhanced by HAART?
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Affiliation(s)
| | - Renchuan Tao
- Department of Periodontology and Oral Medicine, College of Stomatology, Guangxi Medical University, Guangxi, China.,Guangxi Key Laboratory of AIDS Prevention and Treatment, Guangxi Medical University, Guangxi, China
| | - Lanlan Jiang
- Department of Periodontology and Oral Medicine, College of Stomatology, Guangxi Medical University, Guangxi, China
| | - Yuanyuan Peng
- Department of Periodontology and Oral Medicine, College of Stomatology, Guangxi Medical University, Guangxi, China
| | - Yuxiao Huang
- Department of Periodontology and Oral Medicine, College of Stomatology, Guangxi Medical University, Guangxi, China
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