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Carpenter MC, Souter SC, Zipkin RJ, Ackerman ME. Current Insights Into K-associated Fetal Anemia and Potential Treatment Strategies for Sensitized Pregnancies. Transfus Med Rev 2024; 38:150779. [PMID: 37926651 PMCID: PMC10856777 DOI: 10.1016/j.tmrv.2023.150779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 09/21/2023] [Accepted: 09/27/2023] [Indexed: 11/07/2023]
Abstract
K-associated anemic disease of the fetus and newborn (K-ADFN) is a rare but life-threatening disease in which maternal alloantibodies cross the placenta and can mediate an immune attack on fetal red blood cells expressing the K antigen. A considerably more common disease, D-associated hemolytic disease of the fetus and newborn (D-HDFN), can be prophylactically treated using polyclonal α-D antibody preparations. Currently, no such prophylactic treatment exists for K-associated fetal anemia, and disease is usually treated with intrauterine blood transfusions. Here we review current understanding of the biology of K-associated fetal anemia, how the maternal immune system is sensitized to fetal red blood cells, and what is understood about potential mechanisms of prophylactic HDFN interventions. Given the apparent challenges associated with preventing alloimmunization, we highlight novel strategies for treating sensitized mothers to prevent fetal anemia that may hold promise not only for K-mediated disease, but also for other pathogenic alloantibody responses.
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Affiliation(s)
| | | | | | - Margaret E Ackerman
- Thayer School of Engineering, Dartmouth College, Hanover, NH, USA; Geisel School of Medicine at Dartmouth, Lebanon, NH, USA.
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2
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Kelkar NS, Morrison KS, Ackerman ME. Foundations for improved vaccine correlate of risk analysis using positive-unlabeled learning. Hum Vaccin Immunother 2023:2204020. [PMID: 37133899 DOI: 10.1080/21645515.2023.2204020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2023] Open
Abstract
Insights into mechanisms of protection afforded by vaccine efficacy field trials can be complicated by both low rates of exposure and protection. However, these barriers do not preclude the discovery of correlates of reduced risk (CoR) of infection, which are a critical first step in defining correlates of protection (CoP). Given the significant investment in large-scale human vaccine efficacy trials and immunogenicity data collected to support CoR discovery, novel approaches for analyzing efficacy trials to optimally support discovery of CoP are critically needed. By simulating immunological data and evaluating several machine learning approaches, this study lays the groundwork for deploying Positive/Unlabeled (P/U) learning methods, which are designed to differentiate between two groups in cases where only one group has a definitive label and the other remains ambiguous. This description applies to case-control analysis designs for field trials of vaccine efficacy: infected subjects, or cases, are by definition unprotected, whereas uninfected subjects, or controls, may have been either protected or unprotected but simply never exposed. Here, we investigate the value of applying P/U learning to classify study subjects using model immunogenicity data based on predicted protection status in order to support new insights into mechanisms of vaccine-mediated protection from infection. We demonstrate that P/U learning methods can reliably infer protection status, supporting the discovery of simulated CoP that are not observed in conventional comparisons of infection status cases and controls, and we propose next steps necessary for the practical deployment of this novel approach to correlate discovery.
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Affiliation(s)
- Natasha S Kelkar
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Dartmouth College, Hanover, NH, USA
| | - Kyle S Morrison
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Dartmouth College, Hanover, NH, USA
| | - Margaret E Ackerman
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Dartmouth College, Hanover, NH, USA
- Thayer School of Engineering, Dartmouth College, Hanover, NH, USA
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3
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Boudreau CM, Burke JS, Roederer AL, Gorman MJ, Mundle S, Lingwood D, Delagrave S, Sridhar S, Ross TM, Kleanthous H, Alter G. Pre-existing Fc profiles shape the evolution of neutralizing antibody breadth following influenza vaccination. Cell Rep Med 2023; 4:100975. [PMID: 36921600 PMCID: PMC10040413 DOI: 10.1016/j.xcrm.2023.100975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 12/08/2022] [Accepted: 02/19/2023] [Indexed: 03/16/2023]
Abstract
Under the ever-present threat of a pandemic influenza strain, the evolution of a broadly reactive, neutralizing, functional, humoral immune response may hold the key to protection against both circulating and emerging influenza strains. We apply a systems approach to profile hemagglutinin- and neuraminidase-specific humoral signatures that track with the evolution of broad immunity in a cohort of vaccinated individuals and validate these findings in a second longitudinal cohort. Multivariate analysis reveals the presence of a unique pre-existing Fcγ-receptor-binding antibody profile in individuals that evolved broadly reactive hemagglutination inhibition activity (HAI), marked by the presence of elevated levels of pre-existing FCGR2B-binding antibodies. Moreover, vaccination with FCGR2B-binding antibody-opsonized influenza results in enhanced antibody titers and HAI activity in a murine model. Together, these data suggest that pre-existing FCGR2B binding antibodies are a key correlate of the evolution of broadly protective influenza-specific antibodies, providing insight for the design of next-generation influenza vaccines.
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Affiliation(s)
- Carolyn M Boudreau
- PhD Program in Virology, Division of Medical Sciences, Harvard University, Boston, MA 02115, USA; Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA
| | - John S Burke
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA
| | - Alexander L Roederer
- PhD Program in Virology, Division of Medical Sciences, Harvard University, Boston, MA 02115, USA; Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA
| | - Matthew J Gorman
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA
| | - Sophia Mundle
- Discovery North America, Sanofi-Pasteur, Inc., Cambridge, MA 02139, USA
| | - Daniel Lingwood
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA
| | | | - Saranya Sridhar
- Discovery North America, Sanofi-Pasteur, Inc., Cambridge, MA 02139, USA
| | - Ted M Ross
- University of Georgia, Athens, GA 30602, USA
| | | | - Galit Alter
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA.
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4
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Xu S, Carpenter MC, Spreng RL, Neidich SD, Sarkar S, Tenney D, Goodman D, Sawant S, Jha S, Dunn B, Juliana McElrath M, Bekker V, Mudrak SV, Flinko R, Lewis GK, Ferrari G, Tomaras GD, Shen X, Ackerman ME. Impact of adjuvants on the biophysical and functional characteristics of HIV vaccine-elicited antibodies in humans. NPJ Vaccines 2022; 7:90. [PMID: 35927399 DOI: 10.1038/s41541-022-00514-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 07/01/2022] [Indexed: 01/14/2023] Open
Abstract
Adjuvants can alter the magnitude, characteristics, and persistence of the humoral response to protein vaccination. HIV vaccination might benefit from tailored adjuvant choice as raising a durable and protective response to vaccination has been exceptionally challenging. Analysis of trials of partially effective HIV vaccines have identified features of the immune response that correlate with decreased risk, including high titers of V1V2-binding IgG and IgG3 responses with low titers of V1V2-binding IgA responses and enhanced Fc effector functions, notably antibody-dependent cellular cytotoxicity (ADCC) and antibody-dependent cellular phagocytosis (ADCP). However, there has been limited opportunity to compare the effect of different adjuvants on these activities in humans. Here, samples from the AVEG015 study, a phase 1 trial in which participants (n = 112) were immunized with gp120SF-2 and one of six different adjuvants or combinations thereof were assessed for antibody titer, biophysical features, and diverse effector functions. Three adjuvants, MF59 + MTP-PE, SAF/2, and SAF/2 + MDP, increased the peak magnitude and durability of antigen-specific IgG3, IgA, FcγR-binding responses and ADCP activity, as compared to alum. While multiple adjuvants increased the titer of IgG, IgG3, and IgA responses, none consistently altered the balance of IgG to IgA or IgG3 to IgA. Linear regression analysis identified biophysical features including gp120-specific IgG and FcγR-binding responses that could predict functional activity, and network analysis identified coordinated aspects of the humoral response. These analyses reveal the ability of adjuvants to drive the character and function of the humoral response despite limitations of small sample size and immune variability in this human clinical trial.
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5
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Natarajan H, Xu S, Crowley AR, Butler SE, Weiner JA, Bloch EM, Littlefield K, Benner SE, Shrestha R, Ajayi O, Wieland-Alter W, Sullivan D, Shoham S, Quinn TC, Casadevall A, Pekosz A, Redd AD, Tobian AAR, Connor RI, Wright PF, Ackerman ME. Antibody attributes that predict the neutralization and effector function of polyclonal responses to SARS-CoV-2. BMC Immunol 2022; 23:7. [PMID: 35172720 PMCID: PMC8851712 DOI: 10.1186/s12865-022-00480-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 02/07/2022] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND While antibodies can provide significant protection from SARS-CoV-2 infection and disease sequelae, the specific attributes of the humoral response that contribute to immunity are incompletely defined. METHODS We employ machine learning to relate characteristics of the polyclonal antibody response raised by natural infection to diverse antibody effector functions and neutralization potency with the goal of generating both accurate predictions of each activity based on antibody response profiles as well as insights into antibody mechanisms of action. RESULTS To this end, antibody-mediated phagocytosis, cytotoxicity, complement deposition, and neutralization were accurately predicted from biophysical antibody profiles in both discovery and validation cohorts. These models identified SARS-CoV-2-specific IgM as a key predictor of neutralization activity whose mechanistic relevance was supported experimentally by depletion. CONCLUSIONS Validated models of how different aspects of the humoral response relate to antiviral antibody activities suggest desirable attributes to recapitulate by vaccination or other antibody-based interventions.
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Affiliation(s)
- Harini Natarajan
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Dartmouth College, Hanover, NH, USA
| | - Shiwei Xu
- Program in Quantitative Biological Sciences, Dartmouth College, Hanover, NH, USA
| | - Andrew R Crowley
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Dartmouth College, Hanover, NH, USA
| | - Savannah E Butler
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Dartmouth College, Hanover, NH, USA
| | - Joshua A Weiner
- Thayer School of Engineering, Dartmouth College, 14 Engineering Drive, Hanover, NH, 03755, USA
| | - Evan M Bloch
- Department of Pathology, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Kirsten Littlefield
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Sarah E Benner
- Department of Pathology, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Ruchee Shrestha
- Department of Pathology, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Olivia Ajayi
- Department of Pathology, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Wendy Wieland-Alter
- Department of Pediatrics, Geisel School of Medicine at Dartmouth, Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA
| | - David Sullivan
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
- Department of Medicine, Division of Infectious Diseases, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Shmuel Shoham
- Department of Medicine, Division of Infectious Diseases, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Thomas C Quinn
- Department of Medicine, Division of Infectious Diseases, Johns Hopkins School of Medicine, Baltimore, MD, USA
- Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Arturo Casadevall
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
- Department of Medicine, Division of Infectious Diseases, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Andrew Pekosz
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Andrew D Redd
- Department of Medicine, Division of Infectious Diseases, Johns Hopkins School of Medicine, Baltimore, MD, USA
- Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Aaron A R Tobian
- Department of Pathology, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Ruth I Connor
- Department of Pediatrics, Geisel School of Medicine at Dartmouth, Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA
| | - Peter F Wright
- Department of Pediatrics, Geisel School of Medicine at Dartmouth, Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA
| | - Margaret E Ackerman
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Dartmouth College, Hanover, NH, USA.
- Program in Quantitative Biological Sciences, Dartmouth College, Hanover, NH, USA.
- Thayer School of Engineering, Dartmouth College, 14 Engineering Drive, Hanover, NH, 03755, USA.
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6
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Zohar T, Hsiao JC, Mehta N, Das J, Devadhasan A, Karpinski W, Callahan C, Citron MP, DiStefano DJ, Touch S, Wen Z, Sachs JR, Cejas PJ, Espeseth AS, Lauffenburger DA, Bett AJ, Alter G. Upper and lower respiratory tract correlates of protection against respiratory syncytial virus following vaccination of nonhuman primates. Cell Host Microbe 2021; 30:41-52.e5. [PMID: 34879230 DOI: 10.1016/j.chom.2021.11.006] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 09/16/2021] [Accepted: 11/10/2021] [Indexed: 12/12/2022]
Abstract
Respiratory syncytial virus (RSV) infection is a major cause of respiratory illness in infants and the elderly. Although several vaccines have been developed, none have succeeded in part due to our incomplete understanding of the correlates of immune protection. While both T cells and antibodies play a role, emerging data suggest that antibody-mediated mechanisms alone may be sufficient to provide protection. Therefore, to map the humoral correlates of immunity against RSV, antibody responses across six different vaccines were profiled in a highly controlled nonhuman primate-challenge model. Viral loads were monitored in both the upper and lower respiratory tracts, and machine learning was used to determine the vaccine platform-agnostic antibody features associated with protection. Upper respiratory control was associated with virus-specific IgA levels, neutralization, and complement activity, whereas lower respiratory control was associated with Fc-mediated effector mechanisms. These findings provide critical compartment-specific insights toward the rational development of future vaccines.
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Affiliation(s)
- Tomer Zohar
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA 02139, USA; Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Jeff C Hsiao
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA 02139, USA; Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Nickita Mehta
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA 02139, USA
| | - Jishnu Das
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA 02139, USA
| | - Anush Devadhasan
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA 02139, USA
| | - Wiktor Karpinski
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA 02139, USA
| | | | | | | | | | - Zhiyun Wen
- Merck & Co., Inc., Kenilworth, NJ 07033, USA
| | | | | | | | - Douglas A Lauffenburger
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | | | - Galit Alter
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA 02139, USA.
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7
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Cheng HD, Dowell KG, Bailey-Kellogg C, Goods BA, Love JC, Ferrari G, Alter G, Gach J, Forthal DN, Lewis GK, Greene K, Gao H, Montefiori DC, Ackerman ME. Diverse antiviral IgG effector activities are predicted by unique biophysical antibody features. Retrovirology 2021; 18:35. [PMID: 34717659 PMCID: PMC8557579 DOI: 10.1186/s12977-021-00579-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 10/20/2021] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND The critical role of antibody Fc-mediated effector functions in immune defense has been widely reported in various viral infections. These effector functions confer cellular responses through engagement with innate immune cells. The precise mechanism(s) by which immunoglobulin G (IgG) Fc domain and cognate receptors may afford protection are poorly understood, however, in the context of HIV/SHIV infections. Many different in vitro assays have been developed and utilized to measure effector functions, but the extent to which these assays capture distinct antibody activities has not been fully elucidated. RESULTS In this study, six Fc-mediated effector function assays and two biophysical antibody profiling assays were performed on a common set of samples from HIV-1 infected and vaccinated subjects. Biophysical antibody profiles supported robust prediction of diverse IgG effector functions across distinct Fc-mediated effector function assays. While a number of assays showed correlated activities, supervised machine learning models indicated unique antibody features as primary contributing factors to the associated effector functions. Additional experiments established the mechanistic relevance of relationships discovered using this unbiased approach. CONCLUSIONS In sum, this study provides better resolution on the diversity and complexity of effector function assays, offering a clearer perspective into this family of antibody mechanisms of action to inform future HIV-1 treatment and vaccination strategies.
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Affiliation(s)
- Hao D. Cheng
- grid.254880.30000 0001 2179 2404Thayer School of Engineering, Dartmouth College, Hanover, NH USA ,grid.254880.30000 0001 2179 2404Molecular and Cellular Biology Program, Dartmouth College, 14 Engineering Dr., Hanover, NH 03755 USA
| | - Karen G. Dowell
- grid.254880.30000 0001 2179 2404Department of Computer Science, Dartmouth College, Hanover, 03755 USA
| | - Chris Bailey-Kellogg
- grid.254880.30000 0001 2179 2404Department of Computer Science, Dartmouth College, Hanover, 03755 USA
| | - Brittany A. Goods
- grid.116068.80000 0001 2341 2786Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139 USA ,grid.116068.80000 0001 2341 2786Department of Biological Engineering, Koch Institute at MIT, Massachusetts Institute of Technology, Cambridge, MA 02139 USA
| | - J. Christopher Love
- grid.116068.80000 0001 2341 2786Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139 USA ,grid.116068.80000 0001 2341 2786Department of Biological Engineering, Koch Institute at MIT, Massachusetts Institute of Technology, Cambridge, MA 02139 USA
| | - Guido Ferrari
- grid.189509.c0000000100241216Department of Surgery, Duke University Medical Center, Durham, NC 27710 USA ,grid.189509.c0000000100241216Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC 27719 USA
| | - Galit Alter
- grid.461656.60000 0004 0489 3491Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA 02139 USA
| | - Johannes Gach
- grid.266093.80000 0001 0668 7243Division of Infectious Diseases, Irvine School of Medicine, University California, Irvine, CA 92697 USA
| | - Donald N. Forthal
- grid.266093.80000 0001 0668 7243Division of Infectious Diseases, Irvine School of Medicine, University California, Irvine, CA 92697 USA
| | - George K. Lewis
- grid.411024.20000 0001 2175 4264Division of Vaccine Research, Institute of Human Virology, University Maryland School of Medicine, Baltimore, MD 21201 USA
| | - Kelli Greene
- grid.189509.c0000000100241216Department of Surgery, Duke University Medical Center, Durham, NC 27710 USA
| | - Hongmei Gao
- grid.189509.c0000000100241216Department of Surgery, Duke University Medical Center, Durham, NC 27710 USA
| | - David C. Montefiori
- grid.189509.c0000000100241216Department of Surgery, Duke University Medical Center, Durham, NC 27710 USA ,grid.189509.c0000000100241216Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC 27719 USA
| | - Margaret E. Ackerman
- grid.254880.30000 0001 2179 2404Thayer School of Engineering, Dartmouth College, Hanover, NH USA ,grid.254880.30000 0001 2179 2404Molecular and Cellular Biology Program, Dartmouth College, 14 Engineering Dr., Hanover, NH 03755 USA
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8
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Dahora LC, Verheul MK, Williams KL, Jin C, Stockdale L, Cavet G, Giladi E, Hill J, Kim D, Leung Y, Bobay BG, Spicer LD, Sawant S, Rijpkema S, Dennison SM, Alam SM, Pollard AJ, Tomaras GD. Salmonella Typhi Vi capsule prime-boost vaccination induces convergent and functional antibody responses. Sci Immunol 2021; 6:eabj1181. [PMID: 34714686 PMCID: PMC9960181 DOI: 10.1126/sciimmunol.abj1181] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Vaccine development to prevent Salmonella Typhi infections has accelerated over the past decade, resulting in licensure of new vaccines, which use the Vi polysaccharide (Vi PS) of the bacterium conjugated to an unrelated carrier protein as the active component. Antibodies elicited by these vaccines are important for mediating protection against typhoid fever. However, the characteristics of protective and functional Vi antibodies are unknown. In this study, we investigated the human antibody repertoire, avidity maturation, epitope specificity, and function after immunization with a single dose of Vi-tetanus toxoid conjugate vaccine (Vi-TT) and after a booster with plain Vi PS (Vi-PS). The Vi-TT prime induced an IgG1-dominant response, whereas the Vi-TT prime followed by the Vi-PS boost induced IgG1 and IgG2 antibody production. B cells from recipients who received both prime and boost showed evidence of convergence, with shared V gene usage and CDR3 characteristics. The detected Vi antibodies showed heterogeneous avidity ranging from 10 μM to 500 pM, with no evidence of affinity maturation after the boost. Vi-specific antibodies mediated Fc effector functions, which correlated with antibody dissociation kinetics but not with association kinetics. We identified antibodies induced by prime and boost vaccines that recognized subdominant epitopes, indicated by binding to the de–O-acetylated Vi backbone. These antibodies also mediated Fc-dependent functions, such as complement deposition and monocyte phagocytosis. Defining strategies on how to broaden epitope targeting for S. Typhi Vi and enriching for antibody Fc functions that protect against typhoid fever will advance the design of high-efficacy Vi vaccines for protection across diverse populations.
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Affiliation(s)
- Lindsay C. Dahora
- Center for Human Systems Immunology, Duke University, Durham, NC, USA.,Department of Immunology, Duke University, Durham, NC, USA.,Corresponding author. (L.C.D.); (G.D.T.)
| | - Marije K. Verheul
- Oxford Vaccine Group, Department of Pediatrics, University of Oxford and NIHR Oxford Biomedical Research Center, Oxford, UK
| | | | - Celina Jin
- Oxford Vaccine Group, Department of Pediatrics, University of Oxford and NIHR Oxford Biomedical Research Center, Oxford, UK
| | - Lisa Stockdale
- Oxford Vaccine Group, Department of Pediatrics, University of Oxford and NIHR Oxford Biomedical Research Center, Oxford, UK
| | | | | | - Jennifer Hill
- Oxford Vaccine Group, Department of Pediatrics, University of Oxford and NIHR Oxford Biomedical Research Center, Oxford, UK
| | | | | | - Benjamin G. Bobay
- Department of Biochemistry, Duke University, Durham, NC, USA.,Department of Radiology, Duke University, Durham, NC, USA.,Duke University NMR Center, Duke University Medical Center, Durham, NC, USA
| | - Leonard D. Spicer
- Department of Biochemistry, Duke University, Durham, NC, USA.,Department of Radiology, Duke University, Durham, NC, USA.,Duke University NMR Center, Duke University Medical Center, Durham, NC, USA
| | - Sheetal Sawant
- Center for Human Systems Immunology, Duke University, Durham, NC, USA.,Department of Surgery, Duke University, Durham, NC, USA
| | - Sjoerd Rijpkema
- Division of Bacteriology, National Institute of Biological Standards and Control, Potters Bar, UK
| | - S. Moses Dennison
- Center for Human Systems Immunology, Duke University, Durham, NC, USA.,Department of Surgery, Duke University, Durham, NC, USA
| | - S. Munir Alam
- Department of Medicine, Duke University, Durham, NC, USA.,Department of Pathology, Duke University, Durham, NC, USA.,Duke Human Vaccine Institute, Duke University, Durham, NC, USA
| | - Andrew J. Pollard
- Oxford Vaccine Group, Department of Pediatrics, University of Oxford and NIHR Oxford Biomedical Research Center, Oxford, UK
| | - Georgia D. Tomaras
- Center for Human Systems Immunology, Duke University, Durham, NC, USA.,Department of Immunology, Duke University, Durham, NC, USA.,Department of Surgery, Duke University, Durham, NC, USA.,Department of Molecular Genetics and Microbiology, Duke University, Durham, NC, USA.,Corresponding author. (L.C.D.); (G.D.T.)
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9
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Abstract
PURPOSE OF REVIEW Recent work defining Fc-mediated effector functions for both viral control and protection against infection is summarized and considered along with new strategies to drive robust Fc-mediated responses. RECENT FINDINGS In new human and nonhuman primate (NHP) vaccine trials as well as studies of natural infection, Fc-mediated effector responses have sometimes been observed to correlate with decreased risk of infection or with better clinical outcomes, suggesting a potential role for these responses in HIV-1 prevention and therapy. Recent highlights include use of antibody-dependent cellular cytotoxicity-sensitizing CD4-induced mimetic compounds, novel V1V2 immunogens, passive transfer studies, and vaccine regimens that successfully elicited Fc-mediated responses and were reported to decrease risk of infection in challenge studies in NHPs. Lastly, detailed studies of IgG3 forms of HIV-specific antibodies have reported that both neutralizing and Fc-mediated responses can be increased relative to the more prevalent IgG1 subclass. SUMMARY Successful harmonization of neutralizing and Fc-mediated responses may make key contributions to the goal of reducing HIV-1 infection via active and passive vaccination. New studies continue to highlight the importance of Fc-mediated antibody responses as correlates of decreased risk of infection and suggest enhanced phagocytosis is a potential mechanism of reduced risk of infection associated with human IgG3 responses. Results from recent studies may help guide the rational design of therapies and vaccines that aim to specifically leverage antibody effector function.
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10
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Natarajan H, Xu S, Crowley AR, Butler SE, Weiner JA, Bloch EM, Littlefield K, Benner SE, Shrestha R, Ajayi O, Wieland-alter W, Sullivan D, Shoham S, Quinn TC, Casadevall A, Pekosz A, Redd AD, Tobian AA, Connor RI, Wright PF, Ackerman ME. Antibody Attributes that Predict the Neutralization and Effector Function of Polyclonal Responses to SARS-CoV-2.. [PMID: 34401890 PMCID: PMC8366811 DOI: 10.1101/2021.08.06.21261710] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
While antibodies provide significant protection from SARS-CoV-2 infection and disease sequelae, the specific attributes of the humoral response that contribute to immunity are incompletely defined. In this study, we employ machine learning to relate characteristics of the polyclonal antibody response raised by natural infection to diverse antibody effector functions and neutralization potency with the goal of generating both accurate predictions of each activity based on antibody response profiles as well as insights into antibody mechanisms of action. To this end, antibody-mediated phagocytosis, cytotoxicity, complement deposition, and neutralization were accurately predicted from biophysical antibody profiles in both discovery and validation cohorts. These predictive models identified SARS-CoV-2-specific IgM as a key predictor of neutralization activity whose mechanistic relevance was supported experimentally by depletion. Validated models of how different aspects of the humoral response relate to antiviral antibody activities suggest desirable attributes to recapitulate by vaccination or other antibody-based interventions.
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11
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Felber BK, Lu Z, Hu X, Valentin A, Rosati M, Remmel CAL, Weiner JA, Carpenter MC, Faircloth K, Stanfield-Oakley S, Williams WB, Shen X, Tomaras GD, LaBranche CC, Montefiori D, Trinh HV, Rao M, Alam MS, Vandergrift NA, Saunders KO, Wang Y, Rountree W, Das J, Alter G, Reed SG, Aye PP, Schiro F, Pahar B, Dufour JP, Veazey RS, Marx PA, Venzon DJ, Shaw GM, Ferrari G, Ackerman ME, Haynes BF, Pavlakis GN. Co-immunization of DNA and Protein in the Same Anatomical Sites Induces Superior Protective Immune Responses against SHIV Challenge. Cell Rep 2021; 31:107624. [PMID: 32402293 DOI: 10.1016/j.celrep.2020.107624] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 03/10/2020] [Accepted: 04/16/2020] [Indexed: 02/07/2023] Open
Abstract
We compare immunogenicity and protective efficacy of an HIV vaccine comprised of env and gag DNA and Env (Envelope) proteins by co-administration of the vaccine components in the same muscles or by separate administration of DNA + protein in contralateral sites in female rhesus macaques. The 6-valent vaccine includes gp145 Env DNAs, representing six sequentially isolated Envs from the HIV-infected individual CH505, and matching GLA-SE-adjuvanted gp120 Env proteins. Interestingly, only macaques in the co-administration vaccine group are protected against SHIV CH505 acquisition after repeated low-dose intravaginal challenge and show 67% risk reduction per exposure. Macaques in the co-administration group develop higher Env-specific humoral and cellular immune responses. Non-neutralizing Env antibodies, ADCC, and antibodies binding to FcγRIIIa are associated with decreased transmission risk. These data suggest that simultaneous recognition, processing, and presentation of DNA + Env protein in the same draining lymph nodes play a critical role in the development of protective immunity.
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Affiliation(s)
- Barbara K Felber
- Human Retrovirus Pathogenesis Section, Vaccine Branch, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702, USA.
| | - Zhongyan Lu
- Human Retrovirus Pathogenesis Section, Vaccine Branch, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702, USA
| | - Xintao Hu
- Human Retrovirus Pathogenesis Section, Vaccine Branch, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702, USA
| | - Antonio Valentin
- Human Retrovirus Section, Vaccine Branch, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702, USA
| | - Margherita Rosati
- Human Retrovirus Section, Vaccine Branch, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702, USA
| | | | - Joshua A Weiner
- Thayer School of Engineering, Dartmouth College, Hanover, NH 03755, USA
| | | | - Katelyn Faircloth
- Thayer School of Engineering, Dartmouth College, Hanover, NH 03755, USA
| | - Sherry Stanfield-Oakley
- Duke Human Vaccine Institute, Duke University, Durham, NC 27710, USA; Department of Surgery, Duke University, Durham, NC 27710, USA; Department of Molecular Genetics and Microbiology, Duke University, Durham, NC 27710, USA
| | - Wilton B Williams
- Duke Human Vaccine Institute, Duke University, Durham, NC 27710, USA
| | - Xiaoying Shen
- Duke Human Vaccine Institute, Duke University, Durham, NC 27710, USA
| | - Georgia D Tomaras
- Duke Human Vaccine Institute, Duke University, Durham, NC 27710, USA; Department of Surgery, Duke University, Durham, NC 27710, USA; Department of Molecular Genetics and Microbiology, Duke University, Durham, NC 27710, USA; Department of Immunology, Duke University, Durham, NC 27710, USA
| | - Celia C LaBranche
- Duke Human Vaccine Institute, Duke University, Durham, NC 27710, USA; Department of Surgery, Duke University, Durham, NC 27710, USA
| | - David Montefiori
- Duke Human Vaccine Institute, Duke University, Durham, NC 27710, USA; Department of Surgery, Duke University, Durham, NC 27710, USA
| | - Hung V Trinh
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD 20910, USA; Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD 20817, USA
| | - Mangala Rao
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD 20910, USA
| | - Munir S Alam
- Duke Human Vaccine Institute, Duke University, Durham, NC 27710, USA
| | | | - Kevin O Saunders
- Duke Human Vaccine Institute, Duke University, Durham, NC 27710, USA; Department of Surgery, Duke University, Durham, NC 27710, USA
| | - Yunfei Wang
- Duke Human Vaccine Institute, Duke University, Durham, NC 27710, USA
| | - Wes Rountree
- Duke Human Vaccine Institute, Duke University, Durham, NC 27710, USA
| | - Jishnu Das
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA
| | - Galit Alter
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA
| | - Steven G Reed
- Infectious Disease Research Institute, Seattle, WA 98102, USA
| | - Pyone P Aye
- Division of Comparative Pathology, Tulane National Primate Research Center, Covington, LA 70433, USA
| | - Faith Schiro
- Division of Comparative Pathology, Tulane National Primate Research Center, Covington, LA 70433, USA
| | - Bapi Pahar
- Division of Comparative Pathology, Tulane National Primate Research Center, Covington, LA 70433, USA
| | - Jason P Dufour
- Division of Comparative Pathology, Tulane National Primate Research Center, Covington, LA 70433, USA
| | - Ronald S Veazey
- Division of Comparative Pathology, Tulane National Primate Research Center, Covington, LA 70433, USA
| | - Preston A Marx
- Tulane National Primate Research Center, and Department of Tropical Medicine, School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA 70112, USA
| | - David J Venzon
- Biostatistics and Data Management Section, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - George M Shaw
- Departments of Medicine and Microbiology, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Guido Ferrari
- Duke Human Vaccine Institute, Duke University, Durham, NC 27710, USA; Department of Surgery, Duke University, Durham, NC 27710, USA; Department of Molecular Genetics and Microbiology, Duke University, Durham, NC 27710, USA
| | | | - Barton F Haynes
- Duke Human Vaccine Institute, Duke University, Durham, NC 27710, USA; Department of Medicine, Duke University Medical Center, Durham, NC 27710, USA.
| | - George N Pavlakis
- Human Retrovirus Section, Vaccine Branch, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702, USA.
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12
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Lu P, Guerin DJ, Lin S, Chaudhury S, Ackerman ME, Bolton DL, Wallqvist A. Immunoprofiling Correlates of Protection Against SHIV Infection in Adjuvanted HIV-1 Pox-Protein Vaccinated Rhesus Macaques. Front Immunol 2021; 12:625030. [PMID: 34046030 PMCID: PMC8144500 DOI: 10.3389/fimmu.2021.625030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 04/27/2021] [Indexed: 11/13/2022] Open
Abstract
Human immunodeficiency virus type 1 (HIV-1) infection remains a major public health threat due to its incurable nature and the lack of a highly efficacious vaccine. The RV144 vaccine trial is the only clinical study to date that demonstrated significant but modest decrease in HIV infection risk. To improve HIV-1 vaccine immunogenicity and efficacy, we recently evaluated pox-protein vaccination using a next generation liposome-based adjuvant, Army Liposomal Formulation adsorbed to aluminum (ALFA), in rhesus monkeys and observed 90% efficacy against limiting dose mucosal SHIV challenge in male animals. Here, we analyzed binding antibody responses, as assessed by Fc array profiling using a broad range of HIV-1 envelope antigens and Fc features, to explore the mechanisms of ALFA-mediated protection by employing machine learning and Cox proportional hazards regression analyses. We found that Fcγ receptor 2a-related binding antibody responses were augmented by ALFA relative to aluminium hydroxide, and these responses were associated with reduced risk of infection in male animals. Our results highlight the application of systems serology to provide mechanistic insights to vaccine-elicited protection and support evidence that antibody effector responses protect against HIV-1 infection.
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Affiliation(s)
- Pinyi Lu
- Biotechnology HPC Software Applications Institute, Telemedicine and Advanced Technology Research Center, U.S. Army Medical Research and Development Command, Fort Detrick, MD, United States.,Henry M. Jackson Foundation for the Advancement of Military Medicine, Rockville, MD, United States
| | - Dylan J Guerin
- Thayer School of Engineering, Dartmouth College, Hanover, NH, United States
| | - Shu Lin
- Thayer School of Engineering, Dartmouth College, Hanover, NH, United States
| | - Sidhartha Chaudhury
- Center for Enabling Capabilities, Walter Reed Army Institute of Research, Silver Spring, MD, United States
| | | | - Diane L Bolton
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Rockville, MD, United States.,U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
| | - Anders Wallqvist
- Biotechnology HPC Software Applications Institute, Telemedicine and Advanced Technology Research Center, U.S. Army Medical Research and Development Command, Fort Detrick, MD, United States
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13
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Connell AR, Connell J, Leahy TR, Hassan J. Mumps Outbreaks in Vaccinated Populations-Is It Time to Re-assess the Clinical Efficacy of Vaccines? Front Immunol 2020; 11:2089. [PMID: 33072071 PMCID: PMC7531022 DOI: 10.3389/fimmu.2020.02089] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 07/31/2020] [Indexed: 01/05/2023] Open
Abstract
History illustrates the remarkable public health impact of mass vaccination, by dramatically improving life expectancy and reducing the burden of infectious diseases and co-morbidities worldwide. It has been perceived that if an individual adhered to the MMR vaccine schedule that immunity to mumps virus (MuV) would be lifelong. Recent mumps outbreaks in individuals who had received two doses of the Measles Mumps Rubella (MMR) vaccine has challenged the efficacy of the MMR vaccine. However, clinical symptoms, complications, viral shedding and transmission associated with mumps infection has been shown to be reduced in vaccinated individuals, demonstrating a benefit of this vaccine. Therefore, the question of what constitutes a good mumps vaccine and how its impact is assessed in this modern era remains to be addressed. Epidemiology of the individuals most affected by the outbreaks (predominantly young adults) and variance in the circulating MuV genotype have been well-described alluding to a collection of influences such as vaccine hesitancy, heterogeneous vaccine uptake, primary, and/or secondary vaccine failures. This review aims to discuss in detail the interplay of factors thought to be contributing to the current mumps outbreaks seen in highly vaccinated populations. In addition, how mumps diagnoses has progressed and impacted the understanding of mumps infection since a mumps vaccine was first developed, the limitations of current laboratory tests in confirming protection in vaccinated individuals and how vaccine effectiveness is quantified are also considered. By highlighting knowledge gaps within this area, this state-of-the-art review proposes a change of perspective regarding the impact of a vaccine in a highly vaccinated population from a clinical, diagnostic and public perspective, highlighting a need for a paradigm shift on what is considered vaccine immunity.
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Affiliation(s)
- Anna R Connell
- National Children's Research Centre, Children's Health Ireland, Dublin, Ireland
| | - Jeff Connell
- National Virus Reference Laboratory, University College Dublin, Dublin, Ireland
| | - T Ronan Leahy
- Children's Health Ireland, Dublin, Ireland.,Department of Pediatrics, University of Dublin, Trinity College, Dublin, Ireland
| | - Jaythoon Hassan
- National Children's Research Centre, Children's Health Ireland, Dublin, Ireland.,National Virus Reference Laboratory, University College Dublin, Dublin, Ireland
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14
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Atyeo C, Fischinger S, Zohar T, Slein MD, Burke J, Loos C, McCulloch DJ, Newman KL, Wolf C, Yu J, Shuey K, Feldman J, Hauser BM, Caradonna T, Schmidt AG, Suscovich TJ, Linde C, Cai Y, Barouch D, Ryan ET, Charles RC, Lauffenburger D, Chu H, Alter G. Distinct Early Serological Signatures Track with SARS-CoV-2 Survival. Immunity 2020; 53:524-532.e4. [PMID: 32783920 PMCID: PMC7392190 DOI: 10.1016/j.immuni.2020.07.020] [Citation(s) in RCA: 266] [Impact Index Per Article: 66.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 06/29/2020] [Accepted: 07/23/2020] [Indexed: 10/27/2022]
Abstract
As SARS-CoV-2 infections and death counts continue to rise, it remains unclear why some individuals recover from infection, whereas others rapidly progress and die. Although the immunological mechanisms that underlie different clinical trajectories remain poorly defined, pathogen-specific antibodies often point to immunological mechanisms of protection. Here, we profiled SARS-CoV-2-specific humoral responses in a cohort of 22 hospitalized individuals. Despite inter-individual heterogeneity, distinct antibody signatures resolved individuals with different outcomes. Although no differences in SARS-CoV-2-specific IgG levels were observed, spike-specific humoral responses were enriched among convalescent individuals, whereas functional antibody responses to the nucleocapsid were elevated in deceased individuals. Furthermore, this enriched immunodominant spike-specific antibody profile in convalescents was confirmed in a larger validation cohort. These results demonstrate that early antigen-specific and qualitative features of SARS-CoV-2-specific antibodies point to differences in disease trajectory, highlighting the potential importance of functional antigen-specific humoral immunity to guide patient care and vaccine development.
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Affiliation(s)
- Caroline Atyeo
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA, USA; PhD Program in Virology, Division of Medical Sciences, Harvard University, Boston, MA, USA
| | - Stephanie Fischinger
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA, USA; PhD Program in Immunology and Virology, University of Duisburg-Essen, Essen, Germany
| | - Tomer Zohar
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA, USA; Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Matthew D Slein
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA, USA
| | - John Burke
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA, USA
| | - Carolin Loos
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA, USA; Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | | | - Kira L Newman
- Department of Medicine, University of Washington, Seattle, WA, USA
| | - Caitlin Wolf
- Department of Medicine, University of Washington, Seattle, WA, USA
| | - Jingyou Yu
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Kiel Shuey
- Department of Medicine, University of Washington, Seattle, WA, USA
| | - Jared Feldman
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA, USA
| | | | - Tim Caradonna
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA, USA
| | - Aaron G Schmidt
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA, USA
| | | | | | - Yongfei Cai
- Division of Molecular Medicine, Boston Children's Hospital, and Department of Pediatrics, Harvard Medical School, Boston, MA, USA
| | - Dan Barouch
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Edward T Ryan
- Infectious Disease Division, Massachusetts General Hospital, Boston, MA, USA
| | - Richelle C Charles
- Infectious Disease Division, Massachusetts General Hospital, Boston, MA, USA
| | - Douglas Lauffenburger
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Helen Chu
- Department of Medicine, University of Washington, Seattle, WA, USA.
| | - Galit Alter
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA, USA.
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