1
|
Miles JR, Lu P, Bai S, Aguillón-Durán GP, Rodríguez-Herrera JE, Gunn BM, Restrepo BI, Lu LL. Antigen specificity shapes antibody functions in tuberculosis. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.03.597169. [PMID: 38895452 PMCID: PMC11185737 DOI: 10.1101/2024.06.03.597169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
Tuberculosis (TB) is the number one infectious disease cause of death worldwide due to an incomplete understanding of immunity. Emerging data highlight antibody functions mediated by the Fc domain as immune correlates. However, the mechanisms by which antibody functions impact the causative agent Mycobacterium tuberculosis (Mtb) are unclear. Here, we examine how antigen specificity determined by the Fab domain shapes Fc effector functions against Mtb. Using the critical structural and secreted virulence proteins Mtb cell wall and ESAT-6 & CFP-10, we observe that antigen specificity alters subclass, antibody post-translational glycosylation, and Fc effector functions in TB patients. Moreover, Mtb cell wall IgG3 enhances disease through opsonophagocytosis of extracellular Mtb . In contrast, polyclonal and a human monoclonal IgG1 we generated targeting ESAT-6 & CFP-10 inhibit intracellular Mtb . These data show that antibodies have multiple roles in TB and antigen specificity is a critical determinant of the protective and pathogenic capacity.
Collapse
|
2
|
Jeewanraj N, Mandizvo T, Mulaudzi T, Gumede N, Ndhlovu Z, Ndung'u T, Gounder K, Mann J. Partial compartmentalisation of HIV-1 subtype C between lymph nodes, peripheral blood mononuclear cells and plasma. Virology 2023; 582:62-70. [PMID: 37030154 PMCID: PMC10132742 DOI: 10.1016/j.virol.2023.03.011] [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: 12/12/2022] [Revised: 03/10/2023] [Accepted: 03/22/2023] [Indexed: 04/03/2023]
Abstract
HIV-1 compartmentalisation is likely to have important implications for a preventative vaccine as well as eradication strategies. We genetically characterised HIV-1 subtype C variants in lymph nodes, peripheral blood mononuclear cells and plasma of six antiretroviral (ART) naïve individuals and four individuals on ART. Full-length env (n = 171) and gag (n = 250) sequences were generated from participants using single genome amplification. Phylogenetic relatedness of sequences was assessed, and compartmentalisation was determined using both distance and tree-based methods implemented in HyPhy. Additionally, potential associations between compartmentalisation and immune escape mutations were assessed. Partial viral compartmentalisation was present in nine of the ten participants. Broadly neutralising antibody (bnAb) escape was found to be associated with partial env compartmentalisation in some individuals, while cytotoxic T lymphocyte escape mutations in Gag were limited and did not differ between compartments. Viral compartmentalisation may be an important consideration for bnAb use in viral eradication.
Collapse
Affiliation(s)
- Neschika Jeewanraj
- HIV Pathogenesis Programme, Doris Duke Medical Research Institute, Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa
| | - Tawanda Mandizvo
- HIV Pathogenesis Programme, Doris Duke Medical Research Institute, Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa; Africa Health Research Institute, Durban, South Africa
| | - Takalani Mulaudzi
- HIV Pathogenesis Programme, Doris Duke Medical Research Institute, Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa
| | - Nombali Gumede
- HIV Pathogenesis Programme, Doris Duke Medical Research Institute, Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa
| | - Zaza Ndhlovu
- HIV Pathogenesis Programme, Doris Duke Medical Research Institute, Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa; Africa Health Research Institute, Durban, South Africa; Ragon Institute of Massachusetts General Hospital, Massachusetts Institute of Technology and Harvard University, Cambridge, MA, USA
| | - Thumbi Ndung'u
- HIV Pathogenesis Programme, Doris Duke Medical Research Institute, Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa; Africa Health Research Institute, Durban, South Africa; Ragon Institute of Massachusetts General Hospital, Massachusetts Institute of Technology and Harvard University, Cambridge, MA, USA; Division of Infection and Immunity, University College London, London, United Kingdom
| | - Kamini Gounder
- HIV Pathogenesis Programme, Doris Duke Medical Research Institute, Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa; Africa Health Research Institute, Durban, South Africa
| | - Jaclyn Mann
- HIV Pathogenesis Programme, Doris Duke Medical Research Institute, Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa.
| |
Collapse
|
3
|
Agrahari V, Anderson SM, Peet MM, Wong AP, Singh ON, Doncel GF, Clark MR. Long-acting HIV Pre-exposure Prophylaxis (PrEP) approaches: Recent advances, emerging technologies and development challenges. Expert Opin Drug Deliv 2022; 19:1365-1380. [PMID: 36252277 PMCID: PMC9639748 DOI: 10.1080/17425247.2022.2135699] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Introduction: Poor or inconsistent adherence to daily oral pre-exposure prophylaxis (PrEP) has emerged as a key barrier to effective HIV prevention. The advent of potent long-acting (LA) antiretrovirals (ARVs) in conjunction with advances in controlled release technologies has enabled LA ARV drug delivery systems (DDS) capable of providing extended dosing intervals and overcome the challenge of suboptimal drug adherence with daily oral dosing. Areas covered: This review discusses the current state of the LA PrEP field, recent advances, and emerging technologies, including ARV prodrug modifications and new DDS. Technological challenges, knowledge gaps, preclinical testing considerations, and future directions important in the context of clinical translation and implementation of LA HIV PrEP are discussed. Expert opinion: The HIV prevention field is evolving faster than ever and the bar for developing next-generation LA HIV prevention options continues to rise. The requirements for viable LA PrEP products to be implemented in resource-limited settings are challenging, necessitating proactive consideration and product modifications during the design and testing of promising new candidates. If successfully translated, next-generation LA PrEP that are safe, affordable, highly effective, and accepted by both end-users and key stakeholders will offer significant potential to curb the HIV pandemic.
Collapse
Affiliation(s)
- Vivek Agrahari
- CONRAD, Eastern Virginia Medical School, Norfolk, VA, USA
| | | | | | - Andrew P. Wong
- CONRAD, Eastern Virginia Medical School, Norfolk, VA, USA
| | - Onkar N. Singh
- CONRAD, Eastern Virginia Medical School, Norfolk, VA, USA
| | | | | |
Collapse
|
4
|
Berendam SJ, Nelson AN, Yagnik B, Goswami R, Styles TM, Neja MA, Phan CT, Dankwa S, Byrd AU, Garrido C, Amara RR, Chahroudi A, Permar SR, Fouda GG. Challenges and Opportunities of Therapies Targeting Early Life Immunity for Pediatric HIV Cure. Front Immunol 2022; 13:885272. [PMID: 35911681 PMCID: PMC9325996 DOI: 10.3389/fimmu.2022.885272] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Accepted: 06/16/2022] [Indexed: 11/26/2022] Open
Abstract
Early initiation of antiretroviral therapy (ART) significantly improves clinical outcomes and reduces mortality of infants/children living with HIV. However, the ability of infected cells to establish latent viral reservoirs shortly after infection and to persist during long-term ART remains a major barrier to cure. In addition, while early ART treatment of infants living with HIV can limit the size of the virus reservoir, it can also blunt HIV-specific immune responses and does not mediate clearance of latently infected viral reservoirs. Thus, adjunctive immune-based therapies that are geared towards limiting the establishment of the virus reservoir and/or mediating the clearance of persistent reservoirs are of interest for their potential to achieve viral remission in the setting of pediatric HIV. Because of the differences between the early life and adult immune systems, these interventions may need to be tailored to the pediatric settings. Understanding the attributes and specificities of the early life immune milieu that are likely to impact the virus reservoir is important to guide the development of pediatric-specific immune-based interventions towards viral remission and cure. In this review, we compare the immune profiles of pediatric and adult HIV elite controllers, discuss the characteristics of cellular and anatomic HIV reservoirs in pediatric populations, and highlight the potential values of current cure strategies using immune-based therapies for long-term viral remission in the absence of ART in children living with HIV.
Collapse
Affiliation(s)
- Stella J. Berendam
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, United States,Department of Pediatrics, Duke University School of Medicine, Durham, NC, United States,*Correspondence: Stella J. Berendam, ; Genevieve G. Fouda,
| | - Ashley N. Nelson
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, United States,Department of Pediatrics, Duke University School of Medicine, Durham, NC, United States
| | - Bhrugu Yagnik
- Department of Microbiology and Immunology, Emory Vaccine Center, Yerkes National Primate Research Center, Emory University, Atlanta, GA, United States
| | - Ria Goswami
- Department of Pediatrics, Weill Cornell Medicine, New York, NY, United States
| | - Tiffany M. Styles
- Department of Microbiology and Immunology, Emory Vaccine Center, Yerkes National Primate Research Center, Emory University, Atlanta, GA, United States
| | - Margaret A. Neja
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, United States
| | - Caroline T. Phan
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, United States
| | - Sedem Dankwa
- Department of Pediatrics, Weill Cornell Medicine, New York, NY, United States
| | - Alliyah U. Byrd
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, United States
| | - Carolina Garrido
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, United States
| | - Rama R. Amara
- Department of Microbiology and Immunology, Emory Vaccine Center, Yerkes National Primate Research Center, Emory University, Atlanta, GA, United States
| | - Ann Chahroudi
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, United States,Center for Childhood Infections and Vaccines of Children’s Healthcare of Atlanta and Emory University, Atlanta, GA, United States
| | - Sallie R. Permar
- Department of Pediatrics, Weill Cornell Medicine, New York, NY, United States
| | - Genevieve G. Fouda
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, United States,Department of Pediatrics, Duke University School of Medicine, Durham, NC, United States,*Correspondence: Stella J. Berendam, ; Genevieve G. Fouda,
| |
Collapse
|
5
|
Broadly neutralizing antibodies for treatment and prevention of HIV-1 infection. Curr Opin HIV AIDS 2022; 17:247-257. [PMID: 35762380 DOI: 10.1097/coh.0000000000000742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE OF REVIEW Anti-HIV-1 broadly neutralizing antibodies (bNAbs) are promising agents in the fight against the AIDS epidemic. Multiple bNAbs have been already evaluated in clinical trials with encouraging results. This review discusses the use of bNAbs for the prevention and treatment of HIV-1 infection, focusing on manufactured products that have been evaluated in clinical settings. RECENT FINDINGS More than 17 bNAbs have been evaluated for safety and pharmacokinetics in humans. The vast majority presented a well tolerated profile and were generally well tolerated. Serum half-life varied from 12 to 73.5 days and can be improved by the addition of mutations to the Fc regions. Results from the antibody-mediated prevention (AMP) study show that VRC01, a CD4-binding-site bNAb, was effective at preventing the acquisition of sensitive HIV-1 strains but did not prevent the acquisition of strains whose in vitro sensitivity to the antibody had an IC80 of more than 1 μg/ml. New bNAb combinations to improve coverage are currently being evaluated. SUMMARY In this review, we discuss the current landscape of HIV-1 bNAbs in clinical development. We also present the current strategies employed to improve the breadth, potency, serum half-life, effector function and administration of these compounds.
Collapse
|
6
|
Antibodies to combat viral infections: development strategies and progress. Nat Rev Drug Discov 2022; 21:676-696. [PMID: 35725925 PMCID: PMC9207876 DOI: 10.1038/s41573-022-00495-3] [Citation(s) in RCA: 74] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/16/2022] [Indexed: 12/11/2022]
Abstract
Monoclonal antibodies (mAbs) are appealing as potential therapeutics and prophylactics for viral infections owing to characteristics such as their high specificity and their ability to enhance immune responses. Furthermore, antibody engineering can be used to strengthen effector function and prolong mAb half-life, and advances in structural biology have enabled the selection and optimization of potent neutralizing mAbs through identification of vulnerable regions in viral proteins, which can also be relevant for vaccine design. The COVID-19 pandemic has stimulated extensive efforts to develop neutralizing mAbs against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), with several mAbs now having received authorization for emergency use, providing not just an important component of strategies to combat COVID-19 but also a boost to efforts to harness mAbs in therapeutic and preventive settings for other infectious diseases. Here, we describe advances in antibody discovery and engineering that have led to the development of mAbs for use against infections caused by viruses including SARS-CoV-2, respiratory syncytial virus (RSV), Ebola virus (EBOV), human cytomegalovirus (HCMV) and influenza. We also discuss the rationale for moving from empirical to structure-guided strategies in vaccine development, based on identifying optimal candidate antigens and vulnerable regions within them that can be targeted by antibodies to result in a strong protective immune response. Monoclonal antibodies (mAbs) are appealing as potential therapeutics and prophylactics for viral infections. This Review describes advances in antibody discovery and engineering that have led to the development of mAbs that target viruses such as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), respiratory syncytial virus and Ebola virus, and also considers the implications for vaccine development.
Collapse
|
7
|
Jiang S, Tuzikov A, Andrianov A. Small-molecule HIV-1 entry inhibitors targeting the epitopes of broadly neutralizing antibodies. Cell Chem Biol 2022; 29:757-773. [PMID: 35353988 DOI: 10.1016/j.chembiol.2022.03.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 01/27/2022] [Accepted: 03/10/2022] [Indexed: 11/20/2022]
Abstract
Highly active antiretroviral therapy currently used for HIV/AIDS has significantly increased the life expectancy of HIV-infected individuals. It has also improved the quality of life, reduced mortality, and decreased the incidence of AIDS and HIV-related conditions. Currently, however, affected individuals are typically on a lifetime course of several therapeutic drugs, all with the potential for associated toxicity and emergence of resistance. This calls for development of novel, potent, and broad anti-HIV agents able to stop the spread of HIV/AIDS. Significant progress has been made toward identification of anti-HIV-1 broadly neutralizing antibodies (bNAbs). However, antibody-based drugs are costly to produce and store. Administration (by injection only) and other obstacles limit clinical use. In recent years, several highly promising small-molecule HIV-1 entry inhibitors targeting the epitopes of bNAbs have been developed. These newly developed compounds are the focus of the present article.
Collapse
Affiliation(s)
- Shibo Jiang
- Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS), School of Basic Medical Sciences, Shanghai Institute of Infectious Diseases and Biosecurity, Fudan University, Shanghai 200032, China.
| | - Alexander Tuzikov
- United Institute of Informatics Problems, National Academy of Sciences of Belarus, 220012 Minsk, Republic of Belarus
| | - Alexander Andrianov
- Institute of Bioorganic Chemistry, National Academy of Sciences of Belarus, 220141 Minsk, Republic of Belarus.
| |
Collapse
|
8
|
van der Straten K, van Gils MJ, de Taeye SW, de Bree GJ. Optimization of Anti-SARS-CoV-2 Neutralizing Antibody Therapies: Roadmap to Improve Clinical Effectiveness and Implementation. FRONTIERS IN MEDICAL TECHNOLOGY 2022; 4:867982. [PMID: 35419561 PMCID: PMC8996231 DOI: 10.3389/fmedt.2022.867982] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 03/07/2022] [Indexed: 12/11/2022] Open
Abstract
One of the major breakthroughs to combat the current Coronavirus Disease 2019 (COVID-19) pandemic has been the development of highly effective vaccines against the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2). Still, alternatives are needed for individuals who are at high risk of developing severe COVID-19 and are not protected by vaccination. Monoclonal antibodies against the spike protein of SARS-CoV-2 have been shown to be effective as prophylaxis and treatment against COVID-19. However, the emergence of variants of concern (VOCs) challenges the efficacy of antibody therapies. This review describes the neutralization resistance of the clinically-approved monoclonal antibody therapies against the Alpha (B.1.1.7), Beta (B.1.351), Gamma (P1), Delta (B.1.617.2), and the Omicron (B.1.1.529) variants. To guide the development of monoclonal antibody therapies and to anticipate on the continuous evolution of SARS-CoV-2, we highlight different strategies to broaden the antibody activity by targeting more conserved epitopes and/or simultaneously targeting multiple sites of vulnerability of the virus. This review further describes the contribution of antibody Fc effector functions to optimize the antibody efficacy. In addition, the main route of SARS-CoV-2 antibody administration is currently intravenously and dictates a monthly injection when used as prophylactic. Therefore, we discusses the concept of long-acting antibodies (LAABs) and non-intravenously routes of antibody administration in order to broaden the clinical applicability of antibody therapies.
Collapse
Affiliation(s)
- Karlijn van der Straten
- Department of Medical Microbiology and Infection Prevention, Amsterdam Institute for Infection and Immunity, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
- Department of Internal Medicine, Amsterdam Institute for Infection and Immunity, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | - Marit J. van Gils
- Department of Medical Microbiology and Infection Prevention, Amsterdam Institute for Infection and Immunity, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | - Steven W. de Taeye
- Department of Medical Microbiology and Infection Prevention, Amsterdam Institute for Infection and Immunity, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | - Godelieve J. de Bree
- Department of Internal Medicine, Amsterdam Institute for Infection and Immunity, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| |
Collapse
|
9
|
Gobran ST, Ancuta P, Shoukry NH. A Tale of Two Viruses: Immunological Insights Into HCV/HIV Coinfection. Front Immunol 2021; 12:726419. [PMID: 34456931 PMCID: PMC8387722 DOI: 10.3389/fimmu.2021.726419] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 07/26/2021] [Indexed: 12/13/2022] Open
Abstract
Nearly 2.3 million individuals worldwide are coinfected with human immunodeficiency virus (HIV) and hepatitis C virus (HCV). Odds of HCV infection are six times higher in people living with HIV (PLWH) compared to their HIV-negative counterparts, with the highest prevalence among people who inject drugs (PWID) and men who have sex with men (MSM). HIV coinfection has a detrimental impact on the natural history of HCV, including higher rates of HCV persistence following acute infection, higher viral loads, and accelerated progression of liver fibrosis and development of end-stage liver disease compared to HCV monoinfection. Similarly, it has been reported that HCV coinfection impacts HIV disease progression in PLWH receiving anti-retroviral therapies (ART) where HCV coinfection negatively affects the homeostasis of CD4+ T cell counts and facilitates HIV replication and viral reservoir persistence. While ART does not cure HIV, direct acting antivirals (DAA) can now achieve HCV cure in nearly 95% of coinfected individuals. However, little is known about how HCV cure and the subsequent resolution of liver inflammation influence systemic immune activation, immune reconstitution and the latent HIV reservoir. In this review, we will summarize the current knowledge regarding the pathogenesis of HIV/HCV coinfection, the effects of HCV coinfection on HIV disease progression in the context of ART, the impact of HIV on HCV-associated liver morbidity, and the consequences of DAA-mediated HCV cure on immune reconstitution and HIV reservoir persistence in coinfected patients.
Collapse
Affiliation(s)
- Samaa T Gobran
- Centre de Recherche du Centre hospitalier de l'Université de Montréal (CRCHUM), Montréal, QC, Canada.,Département de microbiologie, infectiologie et immunologie, Faculté de Médecine, Université de Montréal, Montréal, QC, Canada.,Department of Medical Microbiology and Immunology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Petronela Ancuta
- Centre de Recherche du Centre hospitalier de l'Université de Montréal (CRCHUM), Montréal, QC, Canada.,Département de microbiologie, infectiologie et immunologie, Faculté de Médecine, Université de Montréal, Montréal, QC, Canada
| | - Naglaa H Shoukry
- Centre de Recherche du Centre hospitalier de l'Université de Montréal (CRCHUM), Montréal, QC, Canada.,Département de médecine, Faculté de médecine, Université de Montréal, Montréal, QC, Canada
| |
Collapse
|
10
|
Wesley MS, Chiong KT, Seaton KE, Arocena CA, Sawant S, Hare J, Hernandez K, Rojas M, Heptinstall J, Beaumont D, Crisafi K, Nkolola J, Barouch DH, Sarzotti-Kelsoe M, Tomaras GD, Yates NL. Validation of a Triplex Pharmacokinetic Assay for Simultaneous Quantitation of HIV-1 Broadly Neutralizing Antibodies PGT121, PGDM1400, and VRC07-523-LS. Front Immunol 2021; 12:709994. [PMID: 34504492 PMCID: PMC8422903 DOI: 10.3389/fimmu.2021.709994] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Accepted: 08/02/2021] [Indexed: 01/17/2023] Open
Abstract
The outcome of the recent Antibody Mediated Prevention (AMP) trials that tested infusion of the broadly neutralizing antibody (bnAb) VRC01 provides proof of concept for blocking infection from sensitive HIV-1 strains. These results also open up the possibility that triple combinations of bnAbs such as PGT121, PGDM1400, as well as long-lasting LS variants such as VRC07-523 LS, have immunoprophylactic potential. PGT121 and PGDM1400 target the HIV-1 V3 and V2 glycan regions of the gp120 envelope protein, respectively, while VRC07-523LS targets the HIV-1 CD4 binding site. These bnAbs demonstrate neutralization potency and complementary breadth of HIV-1 strain coverage. An important clinical trial outcome is the accurate measurement of in vivo concentrations of passively infused bnAbs to determine effective doses for therapy and/or prevention. Standardization and validation of this testing method is a key element for clinical studies as is the ability to simultaneously detect multiple bnAbs in a specific manner. Here we report the development of a sensitive, specific, accurate, and precise multiplexed microsphere-based assay that simultaneously quantifies the respective physiological concentrations of passively infused bnAbs in human serum to ultimately define the threshold needed for protection from HIV-1 infection.
Collapse
Affiliation(s)
- Martina S. Wesley
- Center for Human Systems Immunology, Duke University, Durham, NC, United States
- Department of Surgery, Duke University, Durham, NC, United States
| | - Kelvin T. Chiong
- Center for Human Systems Immunology, Duke University, Durham, NC, United States
- Department of Surgery, Duke University, Durham, NC, United States
| | - Kelly E. Seaton
- Center for Human Systems Immunology, Duke University, Durham, NC, United States
- Department of Surgery, Duke University, Durham, NC, United States
| | | | - Sheetal Sawant
- Center for Human Systems Immunology, Duke University, Durham, NC, United States
- Department of Surgery, Duke University, Durham, NC, United States
| | - Jonathan Hare
- International AIDS Vaccine Initiative (IAVI), Human Immunology Laboratory, Imperial College, London, United Kingdom
- International AIDS Vaccine Initiative (IAVI), New York, NY, United States
| | - Kasey Hernandez
- Center for Human Systems Immunology, Duke University, Durham, NC, United States
| | - Michelle Rojas
- Center for Human Systems Immunology, Duke University, Durham, NC, United States
| | - Jack Heptinstall
- Center for Human Systems Immunology, Duke University, Durham, NC, United States
- Department of Surgery, Duke University, Durham, NC, United States
| | - David Beaumont
- Center for Human Systems Immunology, Duke University, Durham, NC, United States
- Department of Surgery, Duke University, Durham, NC, United States
| | - Katherine Crisafi
- International AIDS Vaccine Initiative (IAVI), New York, NY, United States
| | - Joseph Nkolola
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Boston, MA, United States
- Ragon Institute of Massachusetts General Hospital (MGH), Massachusetts Institute of Technology (MIT) and Harvard, Cambridge, MA, United States
| | - Dan H. Barouch
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Boston, MA, United States
- Ragon Institute of Massachusetts General Hospital (MGH), Massachusetts Institute of Technology (MIT) and Harvard, Cambridge, MA, United States
| | - Marcella Sarzotti-Kelsoe
- Department of Surgery, Duke University, Durham, NC, United States
- Department of Immunology, Duke University, Durham, NC, United States
| | - Georgia D. Tomaras
- Center for Human Systems Immunology, Duke University, Durham, NC, United States
- Department of Surgery, Duke University, Durham, NC, United States
- Department of Immunology, Duke University, Durham, NC, United States
- Department of Molecular Genetics and Microbiology, Duke University, Durham, NC, United States
| | - Nicole L. Yates
- Center for Human Systems Immunology, Duke University, Durham, NC, United States
- Department of Surgery, Duke University, Durham, NC, United States
| |
Collapse
|
11
|
Pincus SH, Craig RB, Weachter L, LaBranche CC, Nabi R, Watt C, Raymond M, Peters T, Song K, Maresh GA, Montefiori DC, Kozlowski PA. Bispecific Anti-HIV Immunoadhesins That Bind Gp120 and Gp41 Have Broad and Potent HIV-Neutralizing Activity. Vaccines (Basel) 2021; 9:vaccines9070774. [PMID: 34358190 PMCID: PMC8310024 DOI: 10.3390/vaccines9070774] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/02/2021] [Accepted: 07/05/2021] [Indexed: 12/22/2022] Open
Abstract
We have constructed bispecific immunoglobulin-like immunoadhesins that bind to both the HIV-envelope glycoproteins: gp120 and gp41. These immunoadhesins have N terminal domains of human CD4 engrafted onto the N-terminus of the heavy chain of human anti-gp41 mAb 7B2. Binding of these constructs to recombinant Env and their antiviral activities were compared to that of the parental mAbs and CD4, as well as to control mAbs. The CD4/7B2 constructs bind to both gp41 and gp140, as well as to native Env expressed on the surface of infected cells. These constructs deliver cytotoxic immunoconjugates to HIV-infected cells, but not as well as a mixture of 7B2 and sCD4, and opsonize for antibody-mediated phagocytosis. Most surprisingly, given that 7B2 neutralizes weakly, if at all, is that the chimeric CD4/7B2 immunoadhesins exhibit broad and potent neutralization of HIV, comparable to that of well-known neutralizing mAbs. These data add to the growing evidence that enhanced neutralizing activity can be obtained with bifunctional mAbs/immunoadhesins. The enhanced neutralization activity of the CD4/7B2 chimeras may result from cross-linking of the two Env subunits with subsequent inhibition of the pre-fusion conformational events that are necessary for entry.
Collapse
Affiliation(s)
- Seth H. Pincus
- Department of Chemistry and Biochemistry, Montana State University, Bozeman, MT 59715, USA; (C.W.); (M.R.); (T.P.)
- Correspondence:
| | - Ryan B. Craig
- Research Institute for Children, Children’s Hospital, New Orleans, LA 70118, USA; (R.B.C.); (L.W.); (K.S.); (G.A.M.)
- Department of Pathology, Tulane University, New Orleans, LA 70112, USA
| | - Lauren Weachter
- Research Institute for Children, Children’s Hospital, New Orleans, LA 70118, USA; (R.B.C.); (L.W.); (K.S.); (G.A.M.)
| | - Celia C. LaBranche
- Department of Surgery, Duke University, Durham, NC 27707, USA; (C.C.L.); (D.C.M.)
| | - Rafiq Nabi
- Department of Microbiology, Immunology, and Parasitology, LSU School of Medicine, New Orleans, LA 70112, USA; (R.N.); (P.A.K.)
| | - Connie Watt
- Department of Chemistry and Biochemistry, Montana State University, Bozeman, MT 59715, USA; (C.W.); (M.R.); (T.P.)
| | - Mark Raymond
- Department of Chemistry and Biochemistry, Montana State University, Bozeman, MT 59715, USA; (C.W.); (M.R.); (T.P.)
| | - Tami Peters
- Department of Chemistry and Biochemistry, Montana State University, Bozeman, MT 59715, USA; (C.W.); (M.R.); (T.P.)
| | - Kejing Song
- Research Institute for Children, Children’s Hospital, New Orleans, LA 70118, USA; (R.B.C.); (L.W.); (K.S.); (G.A.M.)
| | - Grace A. Maresh
- Research Institute for Children, Children’s Hospital, New Orleans, LA 70118, USA; (R.B.C.); (L.W.); (K.S.); (G.A.M.)
| | - David C. Montefiori
- Department of Surgery, Duke University, Durham, NC 27707, USA; (C.C.L.); (D.C.M.)
| | - Pamela A. Kozlowski
- Department of Microbiology, Immunology, and Parasitology, LSU School of Medicine, New Orleans, LA 70112, USA; (R.N.); (P.A.K.)
| |
Collapse
|
12
|
Spencer DA, Shapiro MB, Haigwood NL, Hessell AJ. Advancing HIV Broadly Neutralizing Antibodies: From Discovery to the Clinic. Front Public Health 2021; 9:690017. [PMID: 34123998 PMCID: PMC8187619 DOI: 10.3389/fpubh.2021.690017] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 04/27/2021] [Indexed: 12/15/2022] Open
Abstract
Despite substantial progress in confronting the global HIV-1 epidemic since its inception in the 1980s, better approaches for both treatment and prevention will be necessary to end the epidemic and remain a top public health priority. Antiretroviral therapy (ART) has been effective in extending lives, but at a cost of lifelong adherence to treatment. Broadly neutralizing antibodies (bNAbs) are directed to conserved regions of the HIV-1 envelope glycoprotein trimer (Env) and can block infection if present at the time of viral exposure. The therapeutic application of bNAbs holds great promise, and progress is being made toward their development for widespread clinical use. Compared to the current standard of care of small molecule-based ART, bNAbs offer: (1) reduced toxicity; (2) the advantages of extended half-lives that would bypass daily dosing requirements; and (3) the potential to incorporate a wider immune response through Fc signaling. Recent advances in discovery technology can enable system-wide mining of the immunoglobulin repertoire and will continue to accelerate isolation of next generation potent bNAbs. Passive transfer studies in pre-clinical models and clinical trials have demonstrated the utility of bNAbs in blocking or limiting transmission and achieving viral suppression. These studies have helped to define the window of opportunity for optimal intervention to achieve viral clearance, either using bNAbs alone or in combination with ART. None of these advances with bNAbs would be possible without technological advancements and expanding the cohorts of donor participation. Together these elements fueled the remarkable growth in bNAb development. Here, we review the development of bNAbs as therapies for HIV-1, exploring advances in discovery, insights from animal models and early clinical trials, and innovations to optimize their clinical potential through efforts to extend half-life, maximize the contribution of Fc effector functions, preclude escape through multiepitope targeting, and the potential for sustained delivery.
Collapse
Affiliation(s)
- David A. Spencer
- Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, OR, United States
| | - Mariya B. Shapiro
- Molecular Microbiology & Immunology Department, School of Medicine, Oregon Health & Science University, Portland, OR, United States
| | - Nancy L. Haigwood
- Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, OR, United States
- Molecular Microbiology & Immunology Department, School of Medicine, Oregon Health & Science University, Portland, OR, United States
| | - Ann J. Hessell
- Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, OR, United States
| |
Collapse
|
13
|
Cabrera-Rodríguez R, Pérez-Yanes S, Estévez-Herrera J, Márquez-Arce D, Cabrera C, Espert L, Blanco J, Valenzuela-Fernández A. The Interplay of HIV and Autophagy in Early Infection. Front Microbiol 2021; 12:661446. [PMID: 33995324 PMCID: PMC8113651 DOI: 10.3389/fmicb.2021.661446] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Accepted: 03/31/2021] [Indexed: 12/11/2022] Open
Abstract
HIV/AIDS is still a global threat despite the notable efforts made by the scientific and health communities to understand viral infection, to design new drugs or to improve existing ones, as well as to develop advanced therapies and vaccine designs for functional cure and viral eradication. The identification and analysis of HIV-1 positive individuals that naturally control viral replication in the absence of antiretroviral treatment has provided clues about cellular processes that could interact with viral proteins and RNA and define subsequent viral replication and clinical progression. This is the case of autophagy, a degradative process that not only maintains cell homeostasis by recycling misfolded/old cellular elements to obtain nutrients, but is also relevant in the innate and adaptive immunity against viruses, such as HIV-1. Several studies suggest that early steps of HIV-1 infection, such as virus binding to CD4 or membrane fusion, allow the virus to modulate autophagy pathways preparing cells to be permissive for viral infection. Confirming this interplay, strategies based on autophagy modulation are able to inhibit early steps of HIV-1 infection. Moreover, autophagy dysregulation in late steps of the HIV-1 replication cycle may promote autophagic cell-death of CD4+ T cells or control of HIV-1 latency, likely contributing to disease progression and HIV persistence in infected individuals. In this scenario, understanding the molecular mechanisms underlying HIV/autophagy interplay may contribute to the development of new strategies to control HIV-1 replication. Therefore, the aim of this review is to summarize the knowledge of the interplay between autophagy and the early events of HIV-1 infection, and how autophagy modulation could impair or benefit HIV-1 infection and persistence, impacting viral pathogenesis, immune control of viral replication, and clinical progression of HIV-1 infected patients.
Collapse
Affiliation(s)
- Romina Cabrera-Rodríguez
- Laboratorio de Inmunología Celular y Viral, Unidad de Farmacología, Sección de Medicina, Facultad de Ciencias de la Salud, e IUETSPC de la Universidad de La Laguna, Campus de Ofra s/n, Tenerife, Spain
| | - Silvia Pérez-Yanes
- Laboratorio de Inmunología Celular y Viral, Unidad de Farmacología, Sección de Medicina, Facultad de Ciencias de la Salud, e IUETSPC de la Universidad de La Laguna, Campus de Ofra s/n, Tenerife, Spain
| | - Judith Estévez-Herrera
- Laboratorio de Inmunología Celular y Viral, Unidad de Farmacología, Sección de Medicina, Facultad de Ciencias de la Salud, e IUETSPC de la Universidad de La Laguna, Campus de Ofra s/n, Tenerife, Spain
| | - Daniel Márquez-Arce
- Laboratorio de Inmunología Celular y Viral, Unidad de Farmacología, Sección de Medicina, Facultad de Ciencias de la Salud, e IUETSPC de la Universidad de La Laguna, Campus de Ofra s/n, Tenerife, Spain
| | - Cecilia Cabrera
- AIDS Research Institute IrsiCaixa, Institut de Recerca en Ciències de la Salut Germans Trias i Pujol (IGTP), Barcelona, Spain
| | - Lucile Espert
- Institut de Recherche en Infectiologie de Montpellier, Université de Montpellier, CNRS, Montpellier, France
| | - Julià Blanco
- AIDS Research Institute IrsiCaixa, Institut de Recerca en Ciències de la Salut Germans Trias i Pujol (IGTP), Barcelona, Spain.,Universitat de Vic-Central de Catalunya (UVIC-UCC), Catalonia, Spain
| | - Agustín Valenzuela-Fernández
- Laboratorio de Inmunología Celular y Viral, Unidad de Farmacología, Sección de Medicina, Facultad de Ciencias de la Salud, e IUETSPC de la Universidad de La Laguna, Campus de Ofra s/n, Tenerife, Spain
| |
Collapse
|
14
|
Hsieh SM, Pan SC, Huang YS, Chang SC. Reversal of Viral Latency and Induction of Gag-Specific T-Cell Responses in HIV-1-Infected Adults Through Cyclic Treatment Interruption of Rosuvastatin: A Proof-of-Concept Study. J Acquir Immune Defic Syndr 2021; 86:500-508. [PMID: 33620177 DOI: 10.1097/qai.0000000000002577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Accepted: 11/02/2020] [Indexed: 11/25/2022]
Abstract
BACKGROUND HIV-1 infection remains incurable through combination antiretroviral therapy. Previous studies have shown statins have immunomodulatory effects, and interruption of statins may cause an immune rebound. METHODS In this proof-of-concept study, we longitudinally assessed the impact of immune rebound by cyclic treatment-interruption (CTI) of rosuvastatin on the reversal of HIV latency. The HIV-1-infected persons with stable viral control were considered to be enrolled for CTI of rosuvastatin with a fixed 12-week interval for 72 weeks (3 treatment-interruption cycles). HIV-1 Gag-specific T-cell responses, cell-associated RNA, and proviral DNA were determined. RESULTS From Feb 2017 to Dec 2019, 10 subjects were enrolled. During the 72-week follow-up, their CD4+ T-cell counts did not significantly change, and plasma HIV RNA remained undetectable. Transient but remarkable increases in levels of cell-associated RNA, Gag-specific interferon-γ production from CD4+ T cells and Gag-specific CD8+ cytotoxic capacity were detected shortly after stopping rosuvastatin in every cycle of CTI of rosuvastatin. Furthermore, there was a 2.63-fold reduction (range, 1.41-4.82) in proviral DNA levels (P = 0.005) during the 72-week follow-up. A significant linear association was demonstrated between their nadir CD4+ T-cell counts and the fold decrease in proviral DNA levels (R = 0.81, P = 0.004). CONCLUSION It may be possible to reverse viral latency in CD4+ T cells, activate Gag-specific T cells, and reduce viral reservoir size through CTI of rosuvastatin in HIV-1-infected subjects with stable combination antiretroviral therapy, especially in those with nadir CD4+ T-cell counts > 350 cells/μL.
Collapse
Affiliation(s)
- Szu-Min Hsieh
- Section of Infectious Diseases, Division of Infectious Diseases, Department of Internal Medicine, National Taiwan University Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan
| | | | | | | |
Collapse
|
15
|
Ko S, Jo M, Jung ST. Recent Achievements and Challenges in Prolonging the Serum Half-Lives of Therapeutic IgG Antibodies Through Fc Engineering. BioDrugs 2021; 35:147-157. [PMID: 33608823 PMCID: PMC7894971 DOI: 10.1007/s40259-021-00471-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/07/2021] [Indexed: 01/02/2023]
Abstract
Association of FcRn molecules to the Fc region of IgG in acidified endosomes and subsequent dissociation of the interaction in neutral pH serum enables IgG molecules to be recycled for prolonged serum persistence after internalization by endothelial cells, rather than being degraded in the serum and in the lysosomes inside the cells. Exploiting this intracellular trafficking and recycling mechanism, many researchers have engineered the Fc region to further extend the serum half-lives of therapeutic antibodies by optimizing the pH-dependent IgG Fc-FcRn interaction, and have generated various Fc variants exhibiting significantly improved circulating half-lives of therapeutic IgG antibodies. In order to estimate pharmacokinetic profiles of IgG Fc variants in human serum, not only a variety of in vitro techniques to determine the equilibrium binding constants and instantaneous rate constants for pH-dependent FcRn binding, but also diverse in vivo animal models including wild-type mouse, human FcRn transgenic mouse (Tg32 and Tg276), humanized mouse (Scarlet), or cynomolgus monkey have been harnessed. Currently, multiple IgG Fc variants that have been validated for their prolonged therapeutic potency in preclinical models have been successfully entered into human clinical trials for cancer, infectious diseases, and autoimmune diseases.
Collapse
Affiliation(s)
- Sanghwan Ko
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, Republic of Korea.,Institute of Human Genetics, Korea University College of Medicine, Seoul, Republic of Korea
| | - Migyeong Jo
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, Republic of Korea.,BK21 Graduate Program, Department of Biomedical Sciences, Korea University College of Medicine, Seoul, Republic of Korea
| | - Sang Taek Jung
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, Republic of Korea. .,Institute of Human Genetics, Korea University College of Medicine, Seoul, Republic of Korea. .,BK21 Graduate Program, Department of Biomedical Sciences, Korea University College of Medicine, Seoul, Republic of Korea. .,Department of Biomedical Sciences, Graduate School, Korea University, Seoul, Republic of Korea. .,Biomedical Research Center, Korea University Anam Hospital, Seoul, Republic of Korea.
| |
Collapse
|
16
|
Labh R, Gupta R. Emerging Trends in the Long-Acting Antiretroviral Therapy: Current Status and Therapeutic Challenges. Curr HIV Res 2021; 19:4-13. [PMID: 32838720 DOI: 10.2174/1570162x18666200824104140] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 06/25/2020] [Accepted: 07/17/2020] [Indexed: 11/22/2022]
Abstract
Antiretroviral drug therapy has significantly improved the prognosis and life expectancy of people living with HIV over the years. But this progress comes with an important caveat that antiretroviral regimens generally require adherence to life-long, daily dosing, to keep viral multiplication under check. Non-adherence to such dosing leads to decreased efficacy and increased drug resistance against antiretroviral drugs. Besides, poor drug penetration to certain tissues like CNS and lymph nodes leads to the build-up of viral reservoirs in these sites. To combat some of these challenges and improve patient compliance, long-acting antiretroviral drugs, are a new weapon in the arsenal, in the fight against HIV. Few long-acting preparations have been approved, and several others are in various clinical and preclinical stages of development. However, long-acting formulations also have their share of clinical issues like limited drug distribution, long term adverse drug reactions, drug-drug interactions, and gradual development of drug resistance. Modern technological premises are being tested to mitigate some of these problems. One such promising approach involves nanotechnological methods, which are being used to develop ultra-long acting formulations and drug delivery systems, targeting tissues with residual HIV concentration. Long-Acting Slow Effective Release Antiretroviral Therapy aka LASER ART, also builds on nanotechnology and prodrug modifications to design preparations with tailor-made favorable pharmacokinetics and wider drug distribution. These recent advances are fueling the progression of antiretroviral therapy towards eliminating the disease.
Collapse
Affiliation(s)
- Rajpushpa Labh
- Department of Pharmacology, University College of Medical Sciences & GTB Hospital, University of Delhi, New Delhi, India
| | - Rachna Gupta
- Department of Pharmacology, University College of Medical Sciences & GTB Hospital, University of Delhi, New Delhi, India
| |
Collapse
|
17
|
Mendoza P, Lorenzi JCC, Gaebler C. COVID-19 antibody development fueled by HIV-1 broadly neutralizing antibody research. Curr Opin HIV AIDS 2021; 16:25-35. [PMID: 33229949 DOI: 10.1097/coh.0000000000000657] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
PURPOSE OF REVIEW The coronavirus disease 2019 (COVID-19) pandemic has caught the world unprepared, with no prevention or treatment strategies in place. In addition to the efforts to develop an effective vaccine, alternative approaches are essential to control this pandemic, which will most likely require multiple readily available solutions. Among them, monoclonal anti-severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antibodies have been isolated by multiple laboratories in record time facilitated by techniques that were first pioneered for HIV-1 antibody discovery. Here, we summarize how lessons learned from anti-HIV-1 antibody discovery have provided fundamental knowledge for the rapid development of anti-SARS-CoV-2 antibodies. RECENT FINDINGS Research laboratories that successfully identified potent broadly neutralizing antibodies against HIV-1 have harnessed their antibody discovery techniques to isolate novel potent anti-SARS-CoV-2 antibodies, which have efficacy in animal models. These antibodies represent promising clinical candidates for treatment or prevention of COVID-19. SUMMARY Passive transfer of antibodies is a promising approach when the elicitation of protective immune responses is difficult, as in the case of HIV-1 infection. Antibodies can also play a significant role in post-exposure prophylaxis, in high-risk populations that may not mount robust immune responses after vaccination, and in therapy. We provide a review of the recent approaches used for anti-SARS-CoV-2 antibody discovery and upcoming challenges in the field.
Collapse
Affiliation(s)
- Pilar Mendoza
- Laboratory of Molecular Immunology, The Rockefeller University, New York, New York, USA
| | | | | |
Collapse
|
18
|
Bonney EY, Lamptey H, Aboagye JO, Zaab-Yen Abana C, Boateng AT, Quansah DNK, Obo-Akwa A, Ganu VJ, Puplampu P, Kyei GB. Unwillingness of patients in Ghana to interrupt antiretroviral therapy for HIV cure research. J Virus Erad 2021; 7:100027. [PMID: 33437495 PMCID: PMC7788235 DOI: 10.1016/j.jve.2020.100027] [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: 06/18/2020] [Revised: 11/27/2020] [Accepted: 12/15/2020] [Indexed: 10/31/2022] Open
Abstract
Objectives Though antiretroviral therapy (ART) has reduced HIV infection into a manageable chronic disease, it does not provide for a cure. HIV cure trials may carry risks for patients who are generally doing well on ART, making it imperative that their input is sought as various types of cure methods and trials are designed. Few studies have sought the views of African patients on HIV cure studies. The objective of this study was to determine the views and preferences of people living with HIV (PLWH) in Ghana on cure research. Methods We used a questionnaire to interview 251 PLWH in Ghana about their willingness to engage in HIV cure research. We investigated their motivations, the types of cure they would prefer and which risks were acceptable to them. Results Most participants were enthusiastic about participating in cure research and driven by both altruistic and personal motives. Patients preferred a cure where they would continue follow-up with their doctor (88%) compared to being assured that they have been completely cured and did not need further follow-up (11%). The vast majority of the respondents were risk averse. Most patients (67%) would decline to interrupt ART as part of a protocol for HIV cure research. In bivariate analysis, participants above the age of 40 years were more likely to agree to treatment interruption during cure studies (OR 2.77; 95% CI 1.21-.6.34. p = 0.0159). Conclusions Our results show that preferred cure modalities and risk tolerance for patients in Africa may be different from those of other parts of the world. Extensive social science and behavioural studies are needed on the continent to help inform future cure trials.
Collapse
Affiliation(s)
- Evelyn Y Bonney
- Department of Virology, Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, Accra, Ghana
| | - Helena Lamptey
- Department of Virology, Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, Accra, Ghana
| | - James O Aboagye
- Department of Virology, Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, Accra, Ghana
| | - Christopher Zaab-Yen Abana
- Department of Virology, Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, Accra, Ghana
| | - Anthony T Boateng
- Department of Virology, Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, Accra, Ghana
| | - Darius N K Quansah
- Department of Virology, Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, Accra, Ghana
| | - Adjoa Obo-Akwa
- University of Ghana Medical School, College of Health Sciences, University of Ghana, Ghana
| | - Vincent J Ganu
- University of Ghana Medical School, College of Health Sciences, University of Ghana, Ghana
| | - Peter Puplampu
- University of Ghana Medical School, College of Health Sciences, University of Ghana, Ghana
| | - George B Kyei
- Department of Virology, Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, Accra, Ghana.,Department of Medicine, Washington University School of Medicine in St Louis, MO, USA
| | | |
Collapse
|
19
|
Abstract
The innate immune system is comprised of both cellular and humoral players that recognise and eradicate invading pathogens. Therefore, the interplay between retroviruses and innate immunity has emerged as an important component of viral pathogenesis. HIV-1 infection in humans that results in hematologic abnormalities and immune suppression is well represented by changes in the CD4/CD8 T cell ratio and consequent cell death causing CD4 lymphopenia. The innate immune responses by mucosal barriers such as complement, DCs, macrophages, and NK cells as well as cytokine/chemokine profiles attain great importance in acute HIV-1 infection, and thus, prevent mucosal capture and transmission of HIV-1. Conversely, HIV-1 has evolved to overcome innate immune responses through RNA-mediated rapid mutations, pathogen-associated molecular patterns (PAMPs) modification, down-regulation of NK cell activity and complement receptors, resulting in increased secretion of inflammatory factors. Consequently, epithelial tissues lining up female reproductive tract express innate immune sensors including anti-microbial peptides responsible for forming primary barriers and have displayed an effective potent anti-HIV activity during phase I/II clinical trials.
Collapse
|
20
|
Corduas F, Mancuso E, Lamprou DA. Long-acting implantable devices for the prevention and personalised treatment of infectious, inflammatory and chronic diseases. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101952] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
21
|
Wang HC, Hung HC, Huang PN, Kung YA, Tseng SN, Wang YM, Shih SR, Tsu-An Hsu J. Engineering a novel IgG-like bispecific antibody against enterovirus A71. Biochem Biophys Rep 2020; 24:100860. [PMID: 34095549 PMCID: PMC8164134 DOI: 10.1016/j.bbrep.2020.100860] [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: 06/29/2020] [Revised: 10/02/2020] [Accepted: 11/05/2020] [Indexed: 11/12/2022] Open
Abstract
Frequent outbreaks of enterovirus A71 (EVA71) occur in the Asia-Pacific area, and these are closely associated with severe neurological symptoms in young children. No effective antiviral therapy is currently available for the treatment of EVA71 infection. The development of monoclonal antibodies (mAbs) has demonstrated promise as a novel therapy for the prevention and treatment of infectious diseases. Several medical conditions have been treated using bispecific or multi-specific antibodies that recognize two or more distinct epitopes simultaneously. However, bispecific or multi-specific antibodies often encounter protein expression and product stability problems. In this study, we developed an IgG-like bispecific antibody (E18-F1) comprising two anti-EVA71 antibodies: E18 mAb and llama-derived F1 single-domain antibody. E18-F1 was demonstrated to exhibit superior binding affinity and antiviral activity compared with E18 or F1. Additionally, E18-F1 not only improved survival rate, but also reduced clinical signs in human SCARB2 receptor (hSCARB2) transgenic mice challenged with a lethal dose of EVA71. Altogether, our results reveal that E18-F1 is a simple format bispecific antibody with promising antiviral activity for EVA71.
Collapse
Affiliation(s)
- Hsiang-Ching Wang
- Department of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan
- Biomedical Technology and Device Research Laboratories, Industrial Technology Research Institute, Hsinchu, Taiwan
| | - Hui-Chen Hung
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli, Taiwan
| | - Peng-Nien Huang
- Research Center for Emerging Viral Infections, Chang Gung University, Taoyuan, Taiwan
- Division of Infectious Diseases, Department of Pediatrics, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Yu-An Kung
- Research Center for Emerging Viral Infections, Chang Gung University, Taoyuan, Taiwan
| | - Sung-Nien Tseng
- Research Center for Emerging Viral Infections, Chang Gung University, Taoyuan, Taiwan
| | - Yun-Ming Wang
- Department of Biological Science and Technology, Institute of Molecular Medicine and Bioengineering, Center For Intelligent Drug Systems and Smart Bio-devices (IDS2B), National Chiao Tung University, Hsinchu, Taiwan
| | - Shin-Ru Shih
- Research Center for Emerging Viral Infections, Chang Gung University, Taoyuan, Taiwan
- Department of Laboratory Medicine, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - John Tsu-An Hsu
- Department of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli, Taiwan
| |
Collapse
|
22
|
Wilson A, Lynch RM. Embracing diversity: how can broadly neutralizing antibodies effectively target a diverse HIV-1 reservoir? Curr Opin Pharmacol 2020; 54:173-178. [PMID: 33189993 DOI: 10.1016/j.coph.2020.10.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 10/01/2020] [Accepted: 10/05/2020] [Indexed: 12/15/2022]
Abstract
Genetic diversity in the latent proviral reservoir of HIV-1 infected individuals poses a challenge to cure strategies. It has become increasingly evident that diversity increases proportionally with length of active infection, and that functional and/or sterilizing cure strategies will need to overcome this obstacle in individuals who initiated antiretroviral therapy (ART) during chronic infection. Analyzing the results of analytic treatment interruption (ATI) has allowed for the evaluation of such therapeutic strategies in HIV+ individuals. Strategies to overcome the genetic diversity of the HIV-1 reservoir include antibody combinations, pre-screening individuals for bNAb sensitivity, focusing on low-diversity individuals as well as targeting host proteins.
Collapse
Affiliation(s)
- Andrew Wilson
- Department of Microbiology, Immunology and Tropical Medicine, The George Washington University School of Medicine & Health Sciences, Washington DC, USA
| | - Rebecca M Lynch
- Department of Microbiology, Immunology and Tropical Medicine, The George Washington University School of Medicine & Health Sciences, Washington DC, USA.
| |
Collapse
|
23
|
Termini JM, Martinez-Navio JM, Gao G, Fuchs SP, Desrosiers RC. Glycoengineering of AAV-delivered monoclonal antibodies yields increased ADCC activity. MOLECULAR THERAPY-METHODS & CLINICAL DEVELOPMENT 2020; 20:204-217. [PMID: 33426147 PMCID: PMC7782200 DOI: 10.1016/j.omtm.2020.11.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 11/04/2020] [Indexed: 01/09/2023]
Abstract
The absence of fucose on asparagine-297 of the human immunoglobulin G (IgG) heavy chain has been shown to enhance antibody-dependent cellular cytotoxicity (ADCC) activity by 10- to 100-fold compared to fucosylated antibody. Our lab is studying the use of adeno-associated virus (AAV) as a vector for the delivery of HIV-specific antibodies for therapeutic purposes. Since the antibody is produced by vector-transduced cells in vivo, current techniques of glycoengineering cannot be utilized. In order to achieve similar enhancement of ADCC with AAV-delivered antibodies, short hairpin RNAs (shRNAs) that target fucosyltransferase-8 (FUT8), were designed, tested, and cloned into AAV vectors used to deliver HIV-specific broadly neutralizing antibodies (bNAbs). Antibodies produced by our glycoengineered-AAV (GE-AAV) vectors were analyzed for fucose content and ADCC. GE-AAV constructs were able to achieve over 80% knockdown of FUT8. Results were confirmed by lectin western blot for α1-6 fucose, which revealed almost a complete absence of fucose on GE-AAV-produced antibodies. GE-AAV-produced antibodies revealed >10-fold enhancement of ADCC, while showing identical neutralization and gp140 trimer binding compared to their fucosylated counterparts. ADCC was enhanced 40- to 60-fold when combined with key Fc mutations known to enhance binding to FcγRIIIA. Our findings define a powerful approach for supercharging AAV-delivered anti-HIV antibodies.
Collapse
Affiliation(s)
- James M Termini
- Department of Pathology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - José M Martinez-Navio
- Department of Pathology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Guangping Gao
- Gene Therapy Center, University of Massachusetts Medical School, Worcester, MA, USA
| | - Sebastian P Fuchs
- Department of Pathology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Ronald C Desrosiers
- Department of Pathology, University of Miami Miller School of Medicine, Miami, FL, USA
| |
Collapse
|
24
|
Woldemeskel BA, Kwaa AK, Blankson JN. Viral reservoirs in elite controllers of HIV-1 infection: Implications for HIV cure strategies. EBioMedicine 2020; 62:103118. [PMID: 33181459 PMCID: PMC7658501 DOI: 10.1016/j.ebiom.2020.103118] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 10/16/2020] [Accepted: 10/26/2020] [Indexed: 12/18/2022] Open
Abstract
Elite controllers are HIV-1 positive subjects who control viral replication without antiretroviral therapy. Many of these subjects have replication-competent virus and thus represent a model of a functional cure. Peripheral CD4+ T cells in these subjects have small reservoirs with a low frequency of intact proviruses. Furthermore, recent studies suggest that many of these intact proviruses are disproportionally integrated at sites that have limited transcriptional activity raising the possibility that replication-competent viruses do not replicate because they are in a “blocked and locked” state. However, this feature is probably a consequence rather than a cause of elite control. Additionally, evolution of plasma virus has been detected in many elites suggesting that there continues to be ongoing viral replication in other compartments. While exceptional elite controllers with very limited viral reservoirs have recently been described, more work is needed to determine whether these patients have achieved a sterilizing cure.
Collapse
Affiliation(s)
- Bezawit A Woldemeskel
- Center for AIDS Research, Department of Medicine, Johns Hopkins Medicine, 855 N. Wolfe Street. Baltimore, MD 21205, United States
| | - Abena K Kwaa
- Center for AIDS Research, Department of Medicine, Johns Hopkins Medicine, 855 N. Wolfe Street. Baltimore, MD 21205, United States
| | - Joel N Blankson
- Center for AIDS Research, Department of Medicine, Johns Hopkins Medicine, 855 N. Wolfe Street. Baltimore, MD 21205, United States.
| |
Collapse
|
25
|
Abstract
Recent advancements in paired B-cell receptor sequencing technologies have accelerated the development of simpler, high-throughput pipelines for generating native antibody heavy and light chain pairs used to elucidate novel antibodies and provide insights into antibody response against pathogenic targets. These technologies involve single-cell isolation, using either single wells or emulsified droplets to maintain physical separation of individual cells, followed by sequencing. The development of novel single wells and emulsion-based workflows addresses key challenges by improving throughput of single-cell analyses, reducing method complexity, and integrating functional assays into existing workflows. Enabled by paired B-cell receptor sequencing, functional characterization of pathogen-specific antibodies reveals immunological insights beyond bulk sequencing.
Collapse
Affiliation(s)
- Nicholas C Curtis
- Thayer School of Engineering, Dartmouth College, 14 Engineering Drive, Hanover, NH 03755, United States
| | - Jiwon Lee
- Thayer School of Engineering, Dartmouth College, 14 Engineering Drive, Hanover, NH 03755, United States
| |
Collapse
|
26
|
Pediatric HIV: the Potential of Immune Therapeutics to Achieve Viral Remission and Functional Cure. Curr HIV/AIDS Rep 2020; 17:237-248. [PMID: 32356090 DOI: 10.1007/s11904-020-00495-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
PURPOSE OF REVIEW In the absence of antiretroviral therapy (ART), more than 50% of perinatally HIV-infected children die by 2 years of age. Early ART from infancy is therefore a global recommendation and significantly improves immune health, child survival, and disease outcome. However, even early treatment does not prevent or eradicate the latent reservoir necessitating life-long ART. Adherence to life-long ART is challenging for children and longstanding ART during chronic HIV infection led to higher risks of non-AIDS co-morbidities and virologic failure in infected children. Thus, HIV-infected children are an important population for consideration for immune-based interventions to achieve ART-free remission and functional cure. This review summarizes how the uniqueness of the early life immune system can be harnessed for the development of ART-free remission and functional cure, which means complete virus control in absence of ART. In addition, recent advances in therapeutics in the HIV cure field and their potential for the treatment of pediatric HIV infections are discussed. RECENT FINDINGS Preclinical studies and clinical trials demonstrated that immune-based interventions target HIV replication, limit size of virus reservoir, maintain virus suppression, and delay time to virus rebound. However, these studies have been performed so far only in carefully selected HIV-infected adults, highlighting the need to evaluate the efficacy of immune-based therapeutics in HIV-infected children and to design interventions tailored to the early life maturing immune system. Immune-based therapeutics alone or in combination with ART should be actively explored as potential strategies to achieve viral remission and functional cure in HIV-infected pediatric populations.
Collapse
|
27
|
Abstract
PURPOSE OF REVIEW The application of immunotherapies to HIV presents a new horizon of treatment options, but little is known about what impact they may have on the central nervous system (CNS). Here we review the most promising immunotherapeutic strategies that can be used to target HIV in the CNS and focus on identifying their potential benefits while exploring the challenges that remain in their application. RECENT FINDINGS We have identified five immunotherapeutic strategies that hold potential in managing CNS disease among HIV-infected patients. These include broadly neutralizing antibodies, multi-affinity antibodies, CAR-T cell therapy, checkpoint inhibitors, and therapeutic vaccines. Each class of immunotherapy presents unique mechanisms by which CNS viremia and latency may be addressed but are faced with several challenges. CAR-T cell therapy and multi-affinity antibodies seem to hold promise, but combination therapy is likely to be most effective. However, more human trials are needed before the clinical benefits of these therapies are realized.
Collapse
Affiliation(s)
- Andrew Kapoor
- Division of Infectious Diseases, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - C Sabrina Tan
- Division of Infectious Diseases, Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Avenue E/CLS 1011, Boston, MA, 02215, USA.
| |
Collapse
|
28
|
Ward AR, Mota TM, Jones RB. Immunological approaches to HIV cure. Semin Immunol 2020; 51:101412. [PMID: 32981836 DOI: 10.1016/j.smim.2020.101412] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 09/10/2020] [Indexed: 02/07/2023]
Abstract
Combination antiretroviral therapy (ART) to treat human immunodeficiency virus (HIV) infection has proven remarkably successful - for those who can access and afford it - yet HIV infection persists indefinitely in a reservoir of cells, despite effective ART and despite host antiviral immune responses. An HIV cure is therefore the next aspirational goal and challenge, though approaches differ in their objectives - with 'functional cures' aiming for durable viral control in the absence of ART, and 'sterilizing cures' aiming for the more difficult to realize objective of complete viral eradication. Mechanisms of HIV persistence, including viral latency, anatomical sequestration, suboptimal immune functioning, reservoir replenishment, target cell-intrinsic immune resistance, and, potentially, target cell distraction of immune effectors, likely need to be overcome in order to achieve a cure. A small fraction of people living with HIV (PLWH) naturally control infection via immune-mediated mechanisms, however, providing both sound rationale and optimism that an immunological approach to cure is possible. Herein we review up to date knowledge and emerging evidence on: the mechanisms contributing to HIV persistence, as well as potential strategies to overcome these barriers; promising immunological approaches to achieve viral control and elimination of reservoir-harboring cells, including harnessing adaptive immune responses to HIV and engineered therapies, as well as enhancers of their functions and of complementary innate immune functioning; and combination strategies that are most likely to succeed. Ultimately, a cure must be safe, effective, durable, and, eventually, scalable in order to be widely acceptable and available.
Collapse
Affiliation(s)
- Adam R Ward
- Division of Infectious Diseases, Weill Cornell Medicine, New York, NY, USA; Department of Microbiology, Immunology, and Tropical Medicine, The George Washington University, Washington, DC, USA; PhD Program in Epidemiology, The George Washington University, Washington, DC, USA
| | - Talia M Mota
- Division of Infectious Diseases, Weill Cornell Medicine, New York, NY, USA
| | - R Brad Jones
- Division of Infectious Diseases, Weill Cornell Medicine, New York, NY, USA; Department of Microbiology, Immunology, and Tropical Medicine, The George Washington University, Washington, DC, USA.
| |
Collapse
|
29
|
Brouwer PJM, Caniels TG, van der Straten K, Snitselaar JL, Aldon Y, Bangaru S, Torres JL, Okba NMA, Claireaux M, Kerster G, Bentlage AEH, van Haaren MM, Guerra D, Burger JA, Schermer EE, Verheul KD, van der Velde N, van der Kooi A, van Schooten J, van Breemen MJ, Bijl TPL, Sliepen K, Aartse A, Derking R, Bontjer I, Kootstra NA, Wiersinga WJ, Vidarsson G, Haagmans BL, Ward AB, de Bree GJ, Sanders RW, van Gils MJ. Potent neutralizing antibodies from COVID-19 patients define multiple targets of vulnerability. Science 2020; 369:643-650. [PMID: 32540902 PMCID: PMC7299281 DOI: 10.1126/science.abc5902] [Citation(s) in RCA: 894] [Impact Index Per Article: 223.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 06/10/2020] [Indexed: 12/14/2022]
Abstract
The rapid spread of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has had a large impact on global health, travel, and economy. Therefore, preventative and therapeutic measures are urgently needed. Here, we isolated monoclonal antibodies from three convalescent coronavirus disease 2019 (COVID-19) patients using a SARS-CoV-2 stabilized prefusion spike protein. These antibodies had low levels of somatic hypermutation and showed a strong enrichment in VH1-69, VH3-30-3, and VH1-24 gene usage. A subset of the antibodies was able to potently inhibit authentic SARS-CoV-2 infection at a concentration as low as 0.007 micrograms per milliliter. Competition and electron microscopy studies illustrate that the SARS-CoV-2 spike protein contains multiple distinct antigenic sites, including several receptor-binding domain (RBD) epitopes as well as non-RBD epitopes. In addition to providing guidance for vaccine design, the antibodies described here are promising candidates for COVID-19 treatment and prevention.
Collapse
MESH Headings
- Adult
- Aged
- Antibodies, Monoclonal/immunology
- Antibodies, Neutralizing/blood
- Antibodies, Neutralizing/immunology
- Antibodies, Viral/blood
- Antibodies, Viral/immunology
- Antibody Affinity
- Antigens, Viral/immunology
- B-Lymphocyte Subsets/immunology
- Betacoronavirus/immunology
- Broadly Neutralizing Antibodies/immunology
- COVID-19
- Cell Line, Tumor
- Coronavirus Infections/immunology
- Coronavirus Infections/prevention & control
- Coronavirus Infections/therapy
- Epitopes/immunology
- Female
- Humans
- Immunologic Memory
- Immunophenotyping
- Male
- Middle Aged
- Pandemics/prevention & control
- Pneumonia, Viral/immunology
- Pneumonia, Viral/prevention & control
- Pneumonia, Viral/therapy
- Protein Domains
- Protein Interaction Domains and Motifs/immunology
- Receptors, Coronavirus
- Receptors, Virus/metabolism
- SARS-CoV-2
- Spike Glycoprotein, Coronavirus/chemistry
- Spike Glycoprotein, Coronavirus/immunology
Collapse
Affiliation(s)
- Philip J M Brouwer
- Department of Medical Microbiology, Amsterdam UMC, University of Amsterdam, Amsterdam Institute for Infection and Immunity, 1105AZ Amsterdam, Netherlands
| | - Tom G Caniels
- Department of Medical Microbiology, Amsterdam UMC, University of Amsterdam, Amsterdam Institute for Infection and Immunity, 1105AZ Amsterdam, Netherlands
| | - Karlijn van der Straten
- Department of Medical Microbiology, Amsterdam UMC, University of Amsterdam, Amsterdam Institute for Infection and Immunity, 1105AZ Amsterdam, Netherlands
- Department of Internal Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam Institute for Infection and Immunity, 1105AZ Amsterdam, Netherlands
| | - Jonne L Snitselaar
- Department of Medical Microbiology, Amsterdam UMC, University of Amsterdam, Amsterdam Institute for Infection and Immunity, 1105AZ Amsterdam, Netherlands
| | - Yoann Aldon
- Department of Medical Microbiology, Amsterdam UMC, University of Amsterdam, Amsterdam Institute for Infection and Immunity, 1105AZ Amsterdam, Netherlands
| | - Sandhya Bangaru
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Jonathan L Torres
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Nisreen M A Okba
- Department of Viroscience, Erasmus Medical Center, Rotterdam, 3015GD, Netherlands
| | - Mathieu Claireaux
- Department of Medical Microbiology, Amsterdam UMC, University of Amsterdam, Amsterdam Institute for Infection and Immunity, 1105AZ Amsterdam, Netherlands
| | - Gius Kerster
- Department of Medical Microbiology, Amsterdam UMC, University of Amsterdam, Amsterdam Institute for Infection and Immunity, 1105AZ Amsterdam, Netherlands
| | - Arthur E H Bentlage
- Sanquin Research, Department of Experimental Immunohematology, Amsterdam, Netherlands and Landsteiner Laboratory, Amsterdam UMC, University of Amsterdam, 1006AD Amsterdam, Netherlands
| | - Marlies M van Haaren
- Department of Medical Microbiology, Amsterdam UMC, University of Amsterdam, Amsterdam Institute for Infection and Immunity, 1105AZ Amsterdam, Netherlands
| | - Denise Guerra
- Department of Medical Microbiology, Amsterdam UMC, University of Amsterdam, Amsterdam Institute for Infection and Immunity, 1105AZ Amsterdam, Netherlands
| | - Judith A Burger
- Department of Medical Microbiology, Amsterdam UMC, University of Amsterdam, Amsterdam Institute for Infection and Immunity, 1105AZ Amsterdam, Netherlands
| | - Edith E Schermer
- Department of Medical Microbiology, Amsterdam UMC, University of Amsterdam, Amsterdam Institute for Infection and Immunity, 1105AZ Amsterdam, Netherlands
| | - Kirsten D Verheul
- Department of Medical Microbiology, Amsterdam UMC, University of Amsterdam, Amsterdam Institute for Infection and Immunity, 1105AZ Amsterdam, Netherlands
| | | | | | - Jelle van Schooten
- Department of Medical Microbiology, Amsterdam UMC, University of Amsterdam, Amsterdam Institute for Infection and Immunity, 1105AZ Amsterdam, Netherlands
| | - Mariëlle J van Breemen
- Department of Medical Microbiology, Amsterdam UMC, University of Amsterdam, Amsterdam Institute for Infection and Immunity, 1105AZ Amsterdam, Netherlands
| | - Tom P L Bijl
- Department of Medical Microbiology, Amsterdam UMC, University of Amsterdam, Amsterdam Institute for Infection and Immunity, 1105AZ Amsterdam, Netherlands
| | - Kwinten Sliepen
- Department of Medical Microbiology, Amsterdam UMC, University of Amsterdam, Amsterdam Institute for Infection and Immunity, 1105AZ Amsterdam, Netherlands
| | - Aafke Aartse
- Department of Medical Microbiology, Amsterdam UMC, University of Amsterdam, Amsterdam Institute for Infection and Immunity, 1105AZ Amsterdam, Netherlands
- Department of Virology, Biomedical Primate Research Centre, 2288GJ Rijswijk, Netherlands
| | - Ronald Derking
- Department of Medical Microbiology, Amsterdam UMC, University of Amsterdam, Amsterdam Institute for Infection and Immunity, 1105AZ Amsterdam, Netherlands
| | - Ilja Bontjer
- Department of Medical Microbiology, Amsterdam UMC, University of Amsterdam, Amsterdam Institute for Infection and Immunity, 1105AZ Amsterdam, Netherlands
| | - Neeltje A Kootstra
- Department of Experimental Immunology, Amsterdam UMC, University of Amsterdam, Amsterdam Institute for Infection and Immunity, 1105AZ Amsterdam, Netherlands
| | - W Joost Wiersinga
- Department of Internal Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam Institute for Infection and Immunity, 1105AZ Amsterdam, Netherlands
| | - Gestur Vidarsson
- Sanquin Research, Department of Experimental Immunohematology, Amsterdam, Netherlands and Landsteiner Laboratory, Amsterdam UMC, University of Amsterdam, 1006AD Amsterdam, Netherlands
| | - Bart L Haagmans
- Department of Viroscience, Erasmus Medical Center, Rotterdam, 3015GD, Netherlands
| | - Andrew B Ward
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Godelieve J de Bree
- Department of Internal Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam Institute for Infection and Immunity, 1105AZ Amsterdam, Netherlands.
| | - Rogier W Sanders
- Department of Medical Microbiology, Amsterdam UMC, University of Amsterdam, Amsterdam Institute for Infection and Immunity, 1105AZ Amsterdam, Netherlands.
- Department of Microbiology and Immunology, Weill Medical College of Cornell University, New York, NY 10021, USA
| | - Marit J van Gils
- Department of Medical Microbiology, Amsterdam UMC, University of Amsterdam, Amsterdam Institute for Infection and Immunity, 1105AZ Amsterdam, Netherlands.
| |
Collapse
|
30
|
Durable protection against repeated penile exposures to simian-human immunodeficiency virus by broadly neutralizing antibodies. Nat Commun 2020; 11:3195. [PMID: 32581216 PMCID: PMC7314794 DOI: 10.1038/s41467-020-16928-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 06/01/2020] [Indexed: 12/18/2022] Open
Abstract
Penile acquisition of HIV accounts for most infections among men globally. Nevertheless, candidate HIV interventions for men advance to clinical trials without preclinical efficacy data, due primarily to a paucity of relevant animal models of penile HIV infection. Using our recently developed macaque model, we show that a single subcutaneous administration of broadly neutralizing antibody (bNAb) 10-1074 conferred durable protection against repeated penile exposures to simian-human immunodeficiency virus (SHIVSF162P3). Macaques co-administered bNAbs 10-1074 and 3BNC117, or 3BNC117 alone, also exhibited significant protection against repeated vaginal SHIVAD8-EO exposures. Regression modeling estimated that individual plasma bNAb concentrations of 5 μg ml-1 correlated with ≥99.9% relative reduction in SHIV infection probability via penile (10-1074) or vaginal (10-1074 or 3BNC117) challenge routes. These results demonstrate that comparably large reductions in penile and vaginal SHIV infection risk among macaques were achieved at clinically relevant plasma bNAb concentrations and inform dose selection for the development of bNAbs as long-acting pre-exposure prophylaxis candidates for use by men and women.
Collapse
|
31
|
Abstract
Therapeutic approaches towards a functional cure or eradication of HIV have gained renewed momentum upon encouraging data emerging from studies in SIV monkey models and recent results from human clinical studies. However, a multitude of questions remain to be addressed, including how to deal with the latent viral reservoir, how to boost the host immune response to the virus and what the hurdles are to reach relevant viral compartments in the body. Advances have been made especially with regard to identifying agents that can reactivate the latent virus in vivo and boost the cellular and humoral immunity, but it remains largely unclear whether any of these strategies can awaken a sufficiently large fraction of the viral reservoir and whether the boosted immunity can prevent rapid viral replication once antiretroviral treatments are stopped.
Collapse
Affiliation(s)
- Lucia Bailon
- Fundació Lluita contra la Sida, Infectious Disease Department, Hospital Universitari Germans Trias i Pujol, Badalona, Spain
- Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Beatriz Mothe
- Fundació Lluita contra la Sida, Infectious Disease Department, Hospital Universitari Germans Trias i Pujol, Badalona, Spain
- IrsiCaixa AIDS Research Institute-HIVACAT, Badalona, Spain
- Faculty of Medicine, Universitat de Vic-Central de Catalunya (UVic-UCC), Vic, Spain
| | | | - Christian Brander
- IrsiCaixa AIDS Research Institute-HIVACAT, Badalona, Spain.
- Faculty of Medicine, Universitat de Vic-Central de Catalunya (UVic-UCC), Vic, Spain.
- AELIX Therapeutics, Barcelona, Spain.
- ICREA, Pg. Lluis Companys 23, Barcelona, Spain.
| |
Collapse
|