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Jiang Y, Lin Y, Tetlow AM, Pan R, Ji C, Kong XP, Congdon EE, Sigurdsson EM. Single-Domain Antibody-Based Protein Degrader for Synucleinopathies. bioRxiv 2024:2024.03.11.584473. [PMID: 38558982 PMCID: PMC10979981 DOI: 10.1101/2024.03.11.584473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Synucleinopathies are a group of neurodegenerative diseases characterized by the accumulation of α-synuclein (α-syn) in the brain, leading to motor and neuropsychiatric symptoms. Currently, there are no known cures for synucleinopathies, and treatments mainly focus on symptom management. In this study, we developed a single-domain antibody (sdAb)-based protein degrader with features designed to enhance proteasomal degradation of α-syn. This sdAb derivative targets both α-syn and Cereblon (CRBN), a substrate-receptor for the E3-ubiquitin ligase CRL4CRBN, and thereby induces α-syn ubiquitination and proteasomal degradation. Our results indicate that this therapeutic candidate enhances proteasomal degradation of α-syn, in addition to the endogenous lysosomal degradation machinery. By promoting proteasomal degradation of α-syn, we improved clearance of α-syn in primary culture and mouse models of synucleinopathy. These findings indicate that our sdAb-based protein degrader is a promising therapeutic candidate for synucleinopathies. Considering that only a small percentage of antibodies enter the brain, more potent sdAbs with greater brain entry than whole antibodies could enhance clinical benefits of antibody-based therapies.
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Affiliation(s)
- Yixiang Jiang
- Department of Neuroscience and Physiology, Neuroscience Institute, New York University Grossman School of Medicine, 435 East 30 Street, New York NY 10016, USA
| | - Yan Lin
- Department of Neuroscience and Physiology, Neuroscience Institute, New York University Grossman School of Medicine, 435 East 30 Street, New York NY 10016, USA
| | - Amber M Tetlow
- Department of Neuroscience and Physiology, Neuroscience Institute, New York University Grossman School of Medicine, 435 East 30 Street, New York NY 10016, USA
| | - Ruimin Pan
- Department of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine, 435 East 30 Street, New York NY 10016, USA
| | - Changyi Ji
- Department of Neuroscience and Physiology, Neuroscience Institute, New York University Grossman School of Medicine, 435 East 30 Street, New York NY 10016, USA
| | - Xiang-Peng Kong
- Department of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine, 435 East 30 Street, New York NY 10016, USA
| | - Erin E Congdon
- Department of Neuroscience and Physiology, Neuroscience Institute, New York University Grossman School of Medicine, 435 East 30 Street, New York NY 10016, USA
| | - Einar M Sigurdsson
- Department of Neuroscience and Physiology, Neuroscience Institute, New York University Grossman School of Medicine, 435 East 30 Street, New York NY 10016, USA
- Department of Psychiatry, New York University Grossman School of Medicine, 435 East 30 Street, New York NY 10016, USA
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2
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Cheng YG, Yang SQ, Li P, Wang Y, Li HF, Kong XP, Tan JY, Wang YL. Glycosides constituents from Codonopsis pilosula. Nat Prod Res 2024:1-4. [PMID: 38684008 DOI: 10.1080/14786419.2024.2344738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Accepted: 04/14/2024] [Indexed: 05/02/2024]
Abstract
A new glycoside (1) along with six known analogues (1-7) were isolated from Codonopsis pilosula collected at Shanxi in China. The structure of 1 was established based on comprehensive spectroscopic data and literature comparison. The anti-inflammatory effects of isolated compounds were further investigated in LPS-induced RAW264.7 macrophage.
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Affiliation(s)
- Yan-Gang Cheng
- College of Traditional Chinese Medicine and Food Engineering, Shanxi University of Chinese Medicine, Jinzhong, China
| | - Si-Qi Yang
- College of Traditional Chinese Medicine and Food Engineering, Shanxi University of Chinese Medicine, Jinzhong, China
| | - Pei Li
- College of Traditional Chinese Medicine and Food Engineering, Shanxi University of Chinese Medicine, Jinzhong, China
| | - Yan Wang
- College of Traditional Chinese Medicine and Food Engineering, Shanxi University of Chinese Medicine, Jinzhong, China
| | - Hui-Feng Li
- College of Traditional Chinese Medicine and Food Engineering, Shanxi University of Chinese Medicine, Jinzhong, China
| | - Xiang-Peng Kong
- College of Traditional Chinese Medicine and Food Engineering, Shanxi University of Chinese Medicine, Jinzhong, China
| | - Jin-Yan Tan
- College of Traditional Chinese Medicine and Food Engineering, Shanxi University of Chinese Medicine, Jinzhong, China
| | - Ying-Li Wang
- College of Traditional Chinese Medicine and Food Engineering, Shanxi University of Chinese Medicine, Jinzhong, China
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3
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Silberstein JL, Du J, Chan KW, Frank JA, Mathews II, Kim YB, You J, Lu Q, Liu J, Philips EA, Liu P, Rao E, Fernandez D, Rodriguez GE, Kong XP, Wang J, Cochran JR. Structural insights reveal interplay between LAG-3 homodimerization, ligand binding, and function. Proc Natl Acad Sci U S A 2024; 121:e2310866121. [PMID: 38483996 PMCID: PMC10962948 DOI: 10.1073/pnas.2310866121] [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: 06/27/2023] [Accepted: 01/02/2024] [Indexed: 03/19/2024] Open
Abstract
Lymphocyte activation gene-3 (LAG-3) is an inhibitory receptor expressed on activated T cells and an emerging immunotherapy target. Domain 1 (D1) of LAG-3, which has been purported to directly interact with major histocompatibility complex class II (MHCII) and fibrinogen-like protein 1 (FGL1), has been the major focus for the development of therapeutic antibodies that inhibit LAG-3 receptor-ligand interactions and restore T cell function. Here, we present a high-resolution structure of glycosylated mouse LAG-3 ectodomain, identifying that cis-homodimerization, mediated through a network of hydrophobic residues within domain 2 (D2), is critically required for LAG-3 function. Additionally, we found a previously unidentified key protein-glycan interaction in the dimer interface that affects the spatial orientation of the neighboring D1 domain. Mutation of LAG-3 D2 residues reduced dimer formation, dramatically abolished LAG-3 binding to both MHCII and FGL1 ligands, and consequentially inhibited the role of LAG-3 in suppressing T cell responses. Intriguingly, we showed that antibodies directed against D1, D2, and D3 domains are all capable of blocking LAG-3 dimer formation and MHCII and FGL-1 ligand binding, suggesting a potential allosteric model of LAG-3 function tightly regulated by dimerization. Furthermore, our work reveals unique epitopes, in addition to D1, that can be targeted for immunotherapy of cancer and other human diseases.
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Affiliation(s)
- John L. Silberstein
- Program in Immunology, Stanford University School of Medicine, Stanford, CA94305
- Department of Bioengineering, Stanford University, Stanford, CA94305
| | - Jasper Du
- Department of Pathology, New York University Grossman School of Medicine, New York, NY10016
| | - Kun-Wei Chan
- Department of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine, New York, NY10016
| | - Jessica A. Frank
- Department of Bioengineering, Stanford University, Stanford, CA94305
| | - Irimpan I. Mathews
- SLAC National Accelerator Laboratory, Stanford Synchrotron Radiation Lightsource, Menlo Park, CA94025
| | - Yong Bin Kim
- Department of Bioengineering, Stanford University, Stanford, CA94305
- Department of Chemical Engineering, Stanford University, Stanford, CA 94305
| | - Jia You
- Department of Pathology, New York University Grossman School of Medicine, New York, NY10016
| | - Qiao Lu
- Department of Pathology, New York University Grossman School of Medicine, New York, NY10016
| | - Jia Liu
- Department of Pathology, New York University Grossman School of Medicine, New York, NY10016
| | - Elliot A. Philips
- Department of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine, New York, NY10016
| | - Phillip Liu
- Department of Bioengineering, Stanford University, Stanford, CA94305
- Program in Biophysics, Stanford University School of Medicine, Stanford, CA94305
| | - Eric Rao
- Department of Pathology, New York University Grossman School of Medicine, New York, NY10016
| | - Daniel Fernandez
- Macromolecular Structure Knowledge Center, Stanford Sarafan ChEM-H Institute, Stanford, CA94305
| | - Grayson E. Rodriguez
- Program in Immunology, Stanford University School of Medicine, Stanford, CA94305
- Department of Molecular and Cellular Physiology, Stanford University School of Medicine, Stanford, CA94305
| | - Xiang-Peng Kong
- Department of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine, New York, NY10016
| | - Jun Wang
- Department of Pathology, New York University Grossman School of Medicine, New York, NY10016
- The Laura and Isaac Perlmutter Cancer Center, New York University Langone Health, New York, NY10016
| | - Jennifer R. Cochran
- Program in Immunology, Stanford University School of Medicine, Stanford, CA94305
- Department of Bioengineering, Stanford University, Stanford, CA94305
- Department of Chemical Engineering, Stanford University, Stanford, CA 94305
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4
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Philips EA, Liu J, Kvalvaag A, Mørch AM, Tocheva AS, Ng C, Liang H, Ahearn IM, Pan R, Luo CC, Leithner A, Qin Z, Zhou Y, Garcia-España A, Mor A, Littman DR, Dustin ML, Wang J, Kong XP. Transmembrane domain-driven PD-1 dimers mediate T cell inhibition. Sci Immunol 2024; 9:eade6256. [PMID: 38457513 DOI: 10.1126/sciimmunol.ade6256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Accepted: 02/15/2024] [Indexed: 03/10/2024]
Abstract
Programmed cell death-1 (PD-1) is a potent immune checkpoint receptor on T lymphocytes. Upon engagement by its ligands, PD-L1 or PD-L2, PD-1 inhibits T cell activation and can promote immune tolerance. Antagonism of PD-1 signaling has proven effective in cancer immunotherapy, and conversely, agonists of the receptor may have a role in treating autoimmune disease. Some immune receptors function as dimers, but PD-1 has been considered monomeric. Here, we show that PD-1 and its ligands form dimers as a consequence of transmembrane domain interactions and that propensity for dimerization correlates with the ability of PD-1 to inhibit immune responses, antitumor immunity, cytotoxic T cell function, and autoimmune tissue destruction. These observations contribute to our understanding of the PD-1 axis and how it can potentially be manipulated for improved treatment of cancer and autoimmune diseases.
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Affiliation(s)
- Elliot A Philips
- Departments of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Jia Liu
- Department of Pathology, New York University Grossman School of Medicine, New York, NY 10016, USA
- Laura and Isaac Perlmutter Cancer Center, New York University Langone Health, New York, NY 10016, USA
| | - Audun Kvalvaag
- Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
- Institute for Cancer Research, Oslo University Hospital, Oslo, 0379, Norway
| | - Alexander M Mørch
- Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | - Anna S Tocheva
- Department of Genetics and Genomic Sciences, Icahn School of Medicine, New York, NY 10029, USA
| | - Charles Ng
- Department of Cell Biology, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Hong Liang
- Integrative Biology and Pharmacology, University of Texas Health Science Center, Houston, TX 77030, USA
| | - Ian M Ahearn
- Laura and Isaac Perlmutter Cancer Center, New York University Langone Health, New York, NY 10016, USA
| | - Ruimin Pan
- Departments of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Christina C Luo
- Departments of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Alexander Leithner
- Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | - Zhihua Qin
- Laura and Isaac Perlmutter Cancer Center, New York University Langone Health, New York, NY 10016, USA
| | - Yong Zhou
- Integrative Biology and Pharmacology, University of Texas Health Science Center, Houston, TX 77030, USA
| | - Antonio Garcia-España
- Research Unit, Hospital Universitari de Tarragona Joan XXIII, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, Tarragona, Spain
| | - Adam Mor
- Columbia Center for Translational Immunology, Columbia University Medical Center, New York, NY 10032, USA
| | - Dan R Littman
- Department of Genetics and Genomic Sciences, Icahn School of Medicine, New York, NY 10029, USA
- Howard Hughes Medical Institute, New York, NY 10016, USA
| | - Michael L Dustin
- Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | - Jun Wang
- Department of Pathology, New York University Grossman School of Medicine, New York, NY 10016, USA
- Laura and Isaac Perlmutter Cancer Center, New York University Langone Health, New York, NY 10016, USA
| | - Xiang-Peng Kong
- Departments of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine, New York, NY 10016, USA
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5
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Heindel DW, Figueroa Acosta DM, Goff M, Yengo CK, Jan M, Liu X, Wang XH, Petrova MI, Zhang M, Sagar M, Barnette P, Pandey S, Hessell AJ, Chan KW, Kong XP, Chen BK, Mahal LK, Bensing BA, Hioe CE. HIV-1 interaction with an O-glycan-specific bacterial lectin enhances virus infectivity and resistance to neutralization by antibodies. Res Sq 2024:rs.3.rs-2596269. [PMID: 36824869 PMCID: PMC9949255 DOI: 10.21203/rs.3.rs-2596269/v1] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Bacteria dysbiosis has been associated with an increased risk of HIV-1 transmission and acquisition. The prevalent idea is that bacteria dysbiosis compromises mucosal integrity and promotes inflammatory conditions to cause recruitment and activation of immune cells that harbor or are targeted by HIV-1. However, it is also possible that HIV-1 directly binds bacteria or bacterial products to impact virus infectivity and transmissibility. This study evaluated HIV-1 interactions with bacteria through glycan-binding lectins. The Streptococcal Siglec-like lectin SLBR-N, which is part of the fimbriae shrouding the bacteria surface and recognizes α2,3 sialyated O-linked glycans, was noted for its ability to enhance HIV-1 infectivity in the context of cell-free infection and cell-to-cell transfer. Enhancing effects were recapitulated with O-glycan-binding plant lectins, signifying the importance of O-glycans. Conversely, N-glycan-binding bacterial lectins FimH and Msl had no effect. SLBR-N was demonstrated to capture and transfer infectious HIV-1 virions, bind to O-glycans on HIV-1 Env, and increase HIV-1 resistance to broadly neutralizing antibodies targeting different regions of Env. Hence, this study highlights the potential contribution of O-glycans in promoting HIV-1 infection through the exploitation of O-glycan-binding lectins from commensal bacteria at the mucosa.
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Affiliation(s)
- Daniel W Heindel
- Divison of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Dania M Figueroa Acosta
- Divison of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Marisa Goff
- Divison of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Clauvis Kunkeng Yengo
- Divison of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Muzafar Jan
- Divison of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Present address: Department of Biochemistry, Government Degree College Handwara, University of Kashmir, Jammu & Kashmir, India
| | - Xiaomei Liu
- Divison of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Xiao-Hong Wang
- VA New York Harbor Healthcare System-Manhattan, New York, New York, United States of America
| | - Mariya I Petrova
- Department of Bioscience Engineering, University of Antwerp, Antwerp, Belgium
- Present address: Microbiome Insights and Probiotics Consultancy, Karlovo, Bulgaria
| | - Mo Zhang
- Department of Medicine, Boston University Chobanian & Avedisian School of Medicine, Boston, MA, USA
| | - Manish Sagar
- Department of Medicine, Boston University Chobanian & Avedisian School of Medicine, Boston, MA, USA
- Department of Virology, Immunology and Microbiology, Boston University Chobanian & Avedisian School of Medicine, Boston, USA
| | - Phillip Barnette
- Division of Pathobiology and Immunology, Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, OR, USA
| | - Shilpi Pandey
- Division of Pathobiology and Immunology, Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, OR, USA
| | - Ann J Hessell
- Division of Pathobiology and Immunology, Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, OR, USA
| | - Kun-Wei Chan
- Department of Biochemistry and Molecular Pharmacology New York University Grossman School of Medicine, New York, NY, USA
| | - Xiang-Peng Kong
- Department of Biochemistry and Molecular Pharmacology New York University Grossman School of Medicine, New York, NY, USA
| | - Benjamin K Chen
- Divison of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Lara K Mahal
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada
| | - Barbara A Bensing
- Department of Medicine, San Francisco Veterans Affairs Medical Center and University of California, San Francisco, CA, USA
| | - Catarina E Hioe
- Divison of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- James J. Peters VA Medical Center, Bronx, USA
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6
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Hioe CE, Liu X, Banin AN, Heindel DW, Klingler J, Rao PG, Luo CC, Jiang X, Pandey S, Ordonez T, Barnette P, Totrov M, Zhu J, Na´das A, Zolla-Pazner S, Upadhyay C, Shen X, Kong XP, Hessell AJ. Corrigendum: Vaccination with immune complexes modulates the elicitation of functional antibodies against HIV-1. Front Immunol 2023; 14:1329069. [PMID: 38022586 PMCID: PMC10666736 DOI: 10.3389/fimmu.2023.1329069] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 11/02/2023] [Indexed: 12/01/2023] Open
Abstract
[This corrects the article DOI: 10.3389/fimmu.2023.1271686.].
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Affiliation(s)
- Catarina E. Hioe
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, United States
- Research Service, James J. Peters VA Medical Center, Bronx, NY, United States
| | - Xiaomei Liu
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Andrew N. Banin
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Daniel W. Heindel
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Je´romine Klingler
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Priyanka G. Rao
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Christina C. Luo
- Department of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine, New York, NY, United States
| | - Xunqing Jiang
- Department of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine, New York, NY, United States
| | - Shilpi Pandey
- Division of Pathobiology and Immunology, Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, OR, United States
| | - Tracy Ordonez
- Division of Pathobiology and Immunology, Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, OR, United States
| | - Philip Barnette
- Division of Pathobiology and Immunology, Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, OR, United States
| | | | - Jiang Zhu
- Department of Integrative Structural and Computational Biology and Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA, United States
| | - Arthur Na´das
- Department of Environment Medicine, New York University Grossman School of Medicine, New York, NY, United States
| | - Susan Zolla-Pazner
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Chitra Upadhyay
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Xiaoying Shen
- Division of Surgical Sciences, Department of Surgery, Duke University School of Medicine, Durham, NC, United States
| | - Xiang-Peng Kong
- Department of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine, New York, NY, United States
| | - Ann J. Hessell
- Division of Pathobiology and Immunology, Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, OR, United States
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7
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Wang S, Chan KW, Wei D, Ma X, Liu S, Hu G, Park S, Pan R, Gu Y, Nazzari AF, Olia AS, Xu K, Lin BC, Louder MK, Doria-Rose NA, Montefiori D, Seaman MS, Zhou T, Kwong PD, Arthos J, Kong XP, Lu S. Human CD4-Binding Site Antibody Elicited by Polyvalent DNA Prime-Protein Boost Vaccine Neutralizes Cross-Clade Tier-2-HIV Strains. Res Sq 2023:rs.3.rs-3360161. [PMID: 37886518 PMCID: PMC10602183 DOI: 10.21203/rs.3.rs-3360161/v1] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2023]
Abstract
The vaccine elicitation of HIV-neutralizing antibodies with tier-2-neutralization breadth has been a challenge. Here, we report the isolation and characteristics of a CD4-binding site specific monoclonal antibody, HmAb64, from a human volunteer immunized with a polyvalent gp120 DNA prime-protein boost vaccine. HmAb64 derived from heavy chain variable germline gene IGHV1-18, light chain germline gene IGKV1-39, and had a 3rd heavy chain complementarity determining region (CDR H3) of 15 amino acids. On a cross-clade panel of 208 HIV-1 pseudo-virus strains, HmAb64 neutralized 21 (10%), including tier-2 neutralization resistant strains from clades B, BC, C, and G. The cryo-EM structure of the antigen-binding fragment of HmAb64 bound to a conformation between prefusion closed and occluded open forms of envelope trimer, using both heavy and light CDR3s to recognize the CD4-binding loop, a critical component of the CD4-binding site. A gp120 subunit-based vaccine can thus elicit an antibody capable of tier 2-HIV neutralization.
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Affiliation(s)
- Shixia Wang
- Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA 01655, USA
| | - Kun-Wei Chan
- Department of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Danlan Wei
- Laboratory of Immune Regulation, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD 20892, USA
| | - Xiuwen Ma
- Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA 01655, USA
| | | | - Guangnan Hu
- Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA 01655, USA
| | - Saeyoung Park
- Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA 01655, USA
| | - Ruimin Pan
- Department of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Ying Gu
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD 20892, USA
| | - Alexandra F Nazzari
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD 20892, USA
| | - Adam S Olia
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD 20892, USA
| | - Kai Xu
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD 20892, USA
| | - Bob C Lin
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD 20892, USA
| | - Mark K Louder
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD 20892, USA
| | - Nicole A Doria-Rose
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD 20892, USA
| | | | - Michael S Seaman
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115, USA
| | - Tongqing Zhou
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD 20892, USA
| | - Peter D Kwong
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD 20892, USA
| | - James Arthos
- Laboratory of Immune Regulation, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD 20892, USA
| | - Xiang-Peng Kong
- Department of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Shan Lu
- Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA 01655, USA
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8
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Hioe CE, Liu X, Banin AN, Heindel DW, Klingler J, Rao PG, Luo CC, Jiang X, Pandey S, Ordonez T, Barnette P, Totrov M, Zhu J, Nádas A, Zolla-Pazner S, Upadhyay C, Shen X, Kong XP, Hessell AJ. Vaccination with immune complexes modulates the elicitation of functional antibodies against HIV-1. Front Immunol 2023; 14:1271686. [PMID: 37854587 PMCID: PMC10579950 DOI: 10.3389/fimmu.2023.1271686] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 09/05/2023] [Indexed: 10/20/2023] Open
Abstract
Introduction Neutralizing antibodies (Abs) are one of the immune components required to protect against viral infections. However, developing vaccines capable of eliciting neutralizing Abs effective against a broad array of HIV-1 isolates has been an arduous challenge. Objective This study sought to test vaccines aimed to induce Abs against neutralizing epitopes at the V1V2 apex of HIV-1 envelope (Env). Methods Four groups of rabbits received a DNA vaccine expressing the V1V2 domain of the CRF01_AE A244 strain on a trimeric 2J9C scaffold (V1V2-2J9C) along with a protein vaccine consisting of an uncleaved prefusion-optimized A244 Env trimer with V3 truncation (UFO-BG.ΔV3) or a V1V2-2J9C protein and their respective immune complexes (ICs). These IC vaccines were made using 2158, a V1V2-specific monoclonal Ab (mAb), which binds the V2i epitope in the underbelly region of V1V2 while allosterically promoting the binding of broadly neutralizing mAb PG9 to its V2 apex epitope in vitro. Results Rabbit groups immunized with the DNA vaccine and uncomplexed or complexed UFO-BG.ΔV3 proteins (DNA/UFO-UC or IC) displayed similar profiles of Env- and V1V2-binding Abs but differed from the rabbits receiving the DNA vaccine and uncomplexed or complexed V1V2-2J9C proteins (DNA/V1V2-UC or IC), which generated more cross-reactive V1V2 Abs without detectable binding to gp120 or gp140 Env. Notably, the DNA/UFO-UC vaccine elicited neutralizing Abs against some heterologous tier 1 and tier 2 viruses from different clades, albeit at low titers and only in a fraction of animals, whereas the DNA/V1V2-UC or IC vaccines did not. In comparison with the DNA/UFO-UC group, the DNA/UFO-IC group showed a trend of higher neutralization against TH023.6 and a greater potency of V1V2-specific Ab-dependent cellular phagocytosis (ADCP) but failed to neutralize heterologous viruses. Conclusion These data demonstrate the capacity of V1V2-2J9C-encoding DNA vaccine in combination with UFO-BG.ΔV3, but not V1V2-2J9C, protein vaccines, to elicit homologous and heterologous neutralizing activities in rabbits. The elicitation of neutralizing and ADCP activities was modulated by delivery of UFO-BG.ΔV3 complexed with V2i mAb 2158.
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Affiliation(s)
- Catarina E. Hioe
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, United States
- Research Service, James J. Peters VA Medical Center, Bronx, NY, United States
| | - Xiaomei Liu
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Andrew N. Banin
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Daniel W. Heindel
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Jéromine Klingler
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Priyanka G. Rao
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Christina C. Luo
- Department of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine, New York, NY, United States
| | - Xunqing Jiang
- Department of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine, New York, NY, United States
| | - Shilpi Pandey
- Division of Pathobiology and Immunology, Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, OR, United States
| | - Tracy Ordonez
- Division of Pathobiology and Immunology, Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, OR, United States
| | - Philip Barnette
- Division of Pathobiology and Immunology, Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, OR, United States
| | | | - Jiang Zhu
- Department of Integrative Structural and Computational Biology and Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA, United States
| | - Arthur Nádas
- Department of Environment Medicine, New York University Grossman School of Medicine, New York, NY, United States
| | - Susan Zolla-Pazner
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Chitra Upadhyay
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Xiaoying Shen
- Division of Surgical Sciences, Department of Surgery, Duke University School of Medicine, Durham, NC, United States
| | - Xiang-Peng Kong
- Department of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine, New York, NY, United States
| | - Ann J. Hessell
- Division of Pathobiology and Immunology, Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, OR, United States
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Xu Y, Ferguson T, Masuda K, Siddiqui MA, Smith KP, Vest O, Brooks B, Zhou Z, Obliosca J, Kong XP, Jiang X, Yamashita M, Moriya T, Tison C. Short Carbon Nanotube-Based Delivery of mRNA for HIV-1 Vaccines. Biomolecules 2023; 13:1088. [PMID: 37509124 PMCID: PMC10377108 DOI: 10.3390/biom13071088] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 06/26/2023] [Accepted: 07/04/2023] [Indexed: 07/30/2023] Open
Abstract
Developing a safe and effective preventive for HIV-1 remains the hope for controlling the global AIDS epidemic. Recently, mRNA vaccines have emerged as a promising alternative to conventional vaccine approaches, primarily due to their rapid development and potential for low-cost manufacture. Despite the advantages of mRNA vaccines, challenges remain, especially due to the adverse effects of the delivery vehicle and low delivery efficiency. As a result, Luna Labs is developing a short carbon nanotube-based delivery platform (NanoVac) that can co-deliver mRNA and HIV-1 glycoproteins to the immune system efficiently with negligible toxicity. Surface chemistries of NanoVac were optimized to guide antigen/mRNA loading density and presentation. Multiple formulations were engineered for compatibility with both intramuscular and intranasal administration. NanoVac candidates demonstrated immunogenicity in rabbits and generated human-derived humoral and cellular responses in humanized mice (HIS). Briefly, 33% of the HIV-1-infected HIS mice vaccinated with NanoVac-mRNA was cleared of virus infection by 8-weeks post-infection. Finally, NanoVac stabilized the loaded mRNA against degradation under refrigeration for at least three months, reducing the cold chain burden for vaccine deployment.
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Affiliation(s)
- Yang Xu
- Luna Labs USA, 706 Forest St. Suite A, Charlottesville, VA 22903, USA
| | - Tammy Ferguson
- Luna Labs USA, 706 Forest St. Suite A, Charlottesville, VA 22903, USA
| | - Kazuya Masuda
- Aaron Diamond AIDS Research Center, Division of Infectious Diseases, Department of Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Mohammad Adnan Siddiqui
- Aaron Diamond AIDS Research Center, Division of Infectious Diseases, Department of Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Kelsi Poole Smith
- Luna Labs USA, 706 Forest St. Suite A, Charlottesville, VA 22903, USA
| | - Olivia Vest
- Luna Labs USA, 706 Forest St. Suite A, Charlottesville, VA 22903, USA
| | - Brad Brooks
- Luna Labs USA, 706 Forest St. Suite A, Charlottesville, VA 22903, USA
| | - Ziyou Zhou
- Luna Labs USA, 706 Forest St. Suite A, Charlottesville, VA 22903, USA
| | - Judy Obliosca
- Luna Labs USA, 706 Forest St. Suite A, Charlottesville, VA 22903, USA
| | - Xiang-Peng Kong
- Department of Biochemistry and Molecular Pharmacology, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Xunqing Jiang
- Department of Biochemistry and Molecular Pharmacology, NYU Grossman School of Medicine, New York, NY 10016, USA
| | - Masahiro Yamashita
- Aaron Diamond AIDS Research Center, Division of Infectious Diseases, Department of Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Tsuji Moriya
- Aaron Diamond AIDS Research Center, Division of Infectious Diseases, Department of Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Christopher Tison
- Luna Labs USA, 706 Forest St. Suite A, Charlottesville, VA 22903, USA
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10
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Jiang Y, Lin Y, Krishnaswamy S, Pan R, Wu Q, Sandusky-Beltran LA, Liu M, Kuo MH, Kong XP, Congdon EE, Sigurdsson EM. Single-domain antibody-based noninvasive in vivo imaging of α-synuclein or tau pathology. Sci Adv 2023; 9:eadf3775. [PMID: 37163602 PMCID: PMC10171817 DOI: 10.1126/sciadv.adf3775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 04/11/2023] [Indexed: 05/12/2023]
Abstract
Intracellular deposition of α-synuclein and tau are hallmarks of synucleinopathies and tauopathies, respectively. Recently, several dye-based imaging probes with selectivity for tau aggregates have been developed, but suitable imaging biomarkers for synucleinopathies are still unavailable. Detection of both of these aggregates early in the disease process may allow for prophylactic therapies before functional impairments have manifested, highlighting the importance of developing specific imaging probes for these lesions. In contrast to the β sheet dyes, single-domain antibodies, found in camelids and a few other species, are highly specific, and their small size allows better brain entry and distribution than whole antibodies. Here, we have developed such imaging ligands via phage display libraries derived from llamas immunized with α-synuclein and tau preparations, respectively. These probes allow noninvasive and specific in vivo imaging of α-synuclein versus tau pathology in mice, with the brain signal correlating strongly with lesion burden. These small antibody derivatives have great potential for in vivo diagnosis of these diseases.
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Affiliation(s)
- Yixiang Jiang
- Department of Neuroscience and Physiology, Neuroscience Institute, New York University Grossman School of Medicine, 435 East 30th Street, New York, NY 10016, USA
| | - Yan Lin
- Department of Neuroscience and Physiology, Neuroscience Institute, New York University Grossman School of Medicine, 435 East 30th Street, New York, NY 10016, USA
| | - Senthilkumar Krishnaswamy
- Department of Neuroscience and Physiology, Neuroscience Institute, New York University Grossman School of Medicine, 435 East 30th Street, New York, NY 10016, USA
| | - Ruimin Pan
- Department of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine, 550 First Avenue, New York, NY 10016, USA
| | - Qian Wu
- Department of Neuroscience and Physiology, Neuroscience Institute, New York University Grossman School of Medicine, 435 East 30th Street, New York, NY 10016, USA
| | - Leslie A. Sandusky-Beltran
- Department of Neuroscience and Physiology, Neuroscience Institute, New York University Grossman School of Medicine, 435 East 30th Street, New York, NY 10016, USA
| | - Mengyu Liu
- Department of Biochemistry and Molecular Biology, Michigan State University, 603 Wilson Road, East Lansing, MI 48824, USA
| | - Min-Hao Kuo
- Department of Biochemistry and Molecular Biology, Michigan State University, 603 Wilson Road, East Lansing, MI 48824, USA
| | - Xiang-Peng Kong
- Department of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine, 550 First Avenue, New York, NY 10016, USA
| | - Erin E. Congdon
- Department of Neuroscience and Physiology, Neuroscience Institute, New York University Grossman School of Medicine, 435 East 30th Street, New York, NY 10016, USA
| | - Einar M. Sigurdsson
- Department of Neuroscience and Physiology, Neuroscience Institute, New York University Grossman School of Medicine, 435 East 30th Street, New York, NY 10016, USA
- Department of Psychiatry, New York University Grossman School of Medicine, 435 East 30th Street, New York, NY 10016, USA
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11
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Congdon EE, Pan R, Jiang Y, Sandusky-Beltran LA, Dodge A, Lin Y, Liu M, Kuo MH, Kong XP, Sigurdsson EM. Single domain antibodies targeting pathological tau protein: Influence of four IgG subclasses on efficacy and toxicity. EBioMedicine 2022; 84:104249. [PMID: 36099813 PMCID: PMC9475275 DOI: 10.1016/j.ebiom.2022.104249] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 08/15/2022] [Accepted: 08/19/2022] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Eleven tau immunoglobulin G (IgG) antibodies have entered clinical trials to treat tauopathies, including Alzheimer's disease, but it is unclear which IgG subclass/subtype has the ideal efficacy and safety profile. Only two subtypes, with or without effector function, have been examined in the clinic and not for the same tau antibody. The few preclinical studies on this topic have only compared two subtypes of one antibody each and have yielded conflicting results. METHODS We selected two single domain antibodies (sdAbs) derived from a llama immunized with tau proteins and utilized them to generate an array of Fc-(sdAb)2 subclasses containing identical tau binding domains but differing Fc region. Unmodified sdAbs and their IgG subclasses were tested for efficacy in primary cultures and in vivo microdialysis using JNPL3 tauopathy mice. FINDINGS Unmodified sdAbs were non-toxic, blocked tau toxicity and promoted tau clearance. However, the efficacy/safety profile of their Fc-(sdAb)2 subclasses varied greatly within and between sdAbs. For one of them, all its subtypes were non-toxic, only those with effector function cleared tau, and were more effective in vivo than unmodified sdAb. For the other sdAb, all its subtypes were toxic in tauopathy cultures but not in wild-type cells, suggesting that bivalent binding of its tau epitope stabilizes a toxic conformation of tau, with major implications for tau pathogenesis. Likewise, its subclasses were less effective than the unmodified sdAb in clearing tau in vivo. INTERPRETATION These findings indicate that tau antibodies with effector function are safe and better at clearing pathological tau than effectorless antibodies, Furthermore, tau antibodies can provide a valuable insight into tau pathogenesis, and some may aggravate it. FUNDING Funding for these studies was provided by the National Institute of Health (R01 AG032611, R01 NS077239, RF1 NS120488, R21 AG 069475, R21 AG 058282, T32AG052909), and the NYU Alzheimer's Disease Center Pilot Grant Program (via P30 AG008051).
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Affiliation(s)
- Erin E Congdon
- Department of Neuroscience and Physiology, and the Neuroscience Institute, New York University Grossman School of Medicine, 435 East 30th Street, New York, NY 10016, USA
| | - Ruimin Pan
- Department of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Yixiang Jiang
- Department of Neuroscience and Physiology, and the Neuroscience Institute, New York University Grossman School of Medicine, 435 East 30th Street, New York, NY 10016, USA
| | - Leslie A Sandusky-Beltran
- Department of Neuroscience and Physiology, and the Neuroscience Institute, New York University Grossman School of Medicine, 435 East 30th Street, New York, NY 10016, USA
| | - Andie Dodge
- Department of Neuroscience and Physiology, and the Neuroscience Institute, New York University Grossman School of Medicine, 435 East 30th Street, New York, NY 10016, USA
| | - Yan Lin
- Department of Neuroscience and Physiology, and the Neuroscience Institute, New York University Grossman School of Medicine, 435 East 30th Street, New York, NY 10016, USA
| | - Mengyu Liu
- Department of Biochemistry and Molecular Biology, Michigan State University, 603 Wilson Road, Room 401, East Lansing, MI, 48824, USA
| | - Min-Hao Kuo
- Department of Biochemistry and Molecular Biology, Michigan State University, 603 Wilson Road, Room 401, East Lansing, MI, 48824, USA
| | - Xiang-Peng Kong
- Department of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Einar M Sigurdsson
- Department of Neuroscience and Physiology, and the Neuroscience Institute, New York University Grossman School of Medicine, 435 East 30th Street, New York, NY 10016, USA; Department of Psychiatry, New York University Grossman School of Medicine, New York, NY 10016, USA.
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12
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Xu Y, Zhou Z, Brooks B, Ferguson T, Obliosca J, Huang J, Kaneko I, Iwanaga S, Yuda M, Tsuji Y, Zhang H, Luo CC, Jiang X, Kong XP, Tsuji M, Tison CK. Layer-by-Layer Delivery of Multiple Antigens Using Trimethyl Chitosan Nanoparticles as a Malaria Vaccine Candidate. Front Immunol 2022; 13:900080. [PMID: 36059505 PMCID: PMC9428560 DOI: 10.3389/fimmu.2022.900080] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Accepted: 06/15/2022] [Indexed: 11/13/2022] Open
Abstract
Developing a safe and effective malaria vaccine is critical to reducing the spread and resurgence of this deadly disease, especially in children. In recent years, vaccine technology has seen expanded development of subunit protein, peptide, and nucleic acid vaccines. This is due to their inherent safety, the ability to tailor their immune response, simple storage requirements, easier production, and lower expense compared to using attenuated and inactivated organism-based approaches. However, these new vaccine technologies generally have low efficacy. Subunit vaccines, due to their weak immunogenicity, often necessitate advanced delivery vectors and/or the use of adjuvants. A new area of vaccine development involves design of synthetic micro- and nano-particles and adjuvants that can stimulate immune cells directly through their physical and chemical properties. Further, the unique and complex life cycle of the Plasmodium organism, with multiple stages and varying epitopes/antigens presented by the parasite, is another challenge for malaria vaccine development. Targeting multistage antigens simultaneously is therefore critical for an effective malaria vaccine. Here, we rationally design a layer-by-layer (LbL) antigen delivery platform (we called LbL NP) specifically engineered for malaria vaccines. A biocompatible modified chitosan nanoparticle (trimethyl chitosan, TMC) was synthesized and utilized for LbL loading and release of multiple malaria antigens from pre-erythrocytic and erythrocytic stages. LbL NP served as antigen/protein delivery vehicles and were demonstrated to induce the highest Plasmodium falciparum Circumsporozoite Protein (PfCSP) specific T-cell responses in mice studies as compared to multiple controls. From immunogenicity studies, it was concluded that two doses of intramuscular injection with a longer interval (4 weeks) than traditional malaria vaccine candidate dosing would be the vaccination potential for LbL NP vaccine candidates. Furthermore, in PfCSP/Py parasite challenge studies we demonstrated protective efficacy using LbL NP. These LbL NP provided a significant adjuvant effect since they may induce innate immune response that led to a potent adaptive immunity to mediate non-specific anti-malarial effect. Most importantly, the delivery of CSP full-length protein stimulated long-lasting protective immune responses even after the booster immunization 4 weeks later in mice.
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Affiliation(s)
- Yang Xu
- Luna Labs USA, Biotech Group, Charlottesville, VA, United States
- *Correspondence: Yang Xu,
| | - Ziyou Zhou
- Luna Labs USA, Biotech Group, Charlottesville, VA, United States
| | - Brad Brooks
- Luna Labs USA, Biotech Group, Charlottesville, VA, United States
| | - Tammy Ferguson
- Luna Labs USA, Biotech Group, Charlottesville, VA, United States
| | - Judy Obliosca
- Luna Labs USA, Biotech Group, Charlottesville, VA, United States
| | - Jing Huang
- HIV and Malaria Vaccine Program, Aaron Diamond AIDS Research Center, New York, NY, United States
- Division of Infectious Diseases, Department of Medicine, Columbia University Irving Medical Center, New York, NY, United States
| | - Izumi Kaneko
- Department of Medical Zoology, Mie University Graduate School of Medicine, Mie, Japan
| | - Shiroh Iwanaga
- Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Masao Yuda
- Department of Medical Zoology, Mie University Graduate School of Medicine, Mie, Japan
| | - Yukiko Tsuji
- HIV and Malaria Vaccine Program, Aaron Diamond AIDS Research Center, New York, NY, United States
| | - Huitang Zhang
- Department of Biochemistry and Molecular Pharmacology, New York University (NYU) Grossman School of Medicine, New York, NY, United States
| | - Christina C. Luo
- Department of Biochemistry and Molecular Pharmacology, New York University (NYU) Grossman School of Medicine, New York, NY, United States
| | - Xunqing Jiang
- Department of Biochemistry and Molecular Pharmacology, New York University (NYU) Grossman School of Medicine, New York, NY, United States
| | - Xiang-Peng Kong
- Department of Biochemistry and Molecular Pharmacology, New York University (NYU) Grossman School of Medicine, New York, NY, United States
| | - Moriya Tsuji
- HIV and Malaria Vaccine Program, Aaron Diamond AIDS Research Center, New York, NY, United States
- Division of Infectious Diseases, Department of Medicine, Columbia University Irving Medical Center, New York, NY, United States
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13
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Zhang S, Liu YB, Ma MY, Cao Z, Kong XP, Chai W. Revision Total Hip Arthroplasty with Severe Acetabular Defect: A Preliminary Exploration and Attempt of Robotic-Assisted Technology. Orthop Surg 2022; 14:1912-1917. [PMID: 35794826 PMCID: PMC9363716 DOI: 10.1111/os.13368] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 04/07/2022] [Accepted: 04/27/2022] [Indexed: 11/29/2022] Open
Abstract
Background Robotic‐assisted technology may be useful in hip revision cases with acetabular defects. However, data on the use of robotic‐assisted technology for such complex diseases is lacking. Case Presentation This case study described the adoption of MAKO robotic‐assisted treatment of revision total hip arthroplasty (THA) combined with severe acetabular defect (Paprosky type IIIB). Robotic‐assisted technology accurately achieved preoperative planning; the acetabular component and augment were placed in the original position and angle as planned. Robotic‐assisted acetabular reaming was successful in a single pass, preserving the remaining acetabular bone mass very well with no procedure‐related complications. The Harris Hip Score (HHS) at 6 months postoperatively was 84 and the Western Ontario and McMaster Universities (WOMAC) Osteoarthritis Index was 24. Conclusion Robotic‐assisted technology can help in the accurate reconstruction of acetabular defect in complex hip revision surgery.
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Affiliation(s)
- Shuai Zhang
- Medical school of Chinese PLA, Beijing, China.,Senior Department of Orthopedics, The Forth Medical Center of Chinese PLA General Hospital, Beijing, China.,National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, Beijing, China
| | - Yu-Bo Liu
- Senior Department of Orthopedics, The Forth Medical Center of Chinese PLA General Hospital, Beijing, China.,National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, Beijing, China.,School of Medicine, Nankai University, Tianjin, China
| | - Ming-Yang Ma
- Medical school of Chinese PLA, Beijing, China.,Senior Department of Orthopedics, The Forth Medical Center of Chinese PLA General Hospital, Beijing, China.,National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, Beijing, China
| | - Zheng Cao
- Senior Department of Orthopedics, The Forth Medical Center of Chinese PLA General Hospital, Beijing, China.,National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, Beijing, China.,School of Medicine, Nankai University, Tianjin, China
| | - Xiang-Peng Kong
- Senior Department of Orthopedics, The Forth Medical Center of Chinese PLA General Hospital, Beijing, China.,National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, Beijing, China
| | - Wei Chai
- Senior Department of Orthopedics, The Forth Medical Center of Chinese PLA General Hospital, Beijing, China.,National Clinical Research Center for Orthopedics, Sports Medicine and Rehabilitation, Beijing, China
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14
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Zhao X, Fang R, Wang F, Kong XP, Li Y. Metal Oxide-Stabilized Hetero-Single-Atoms for Oxidative Cleavage of Biomass-Derived Isoeugenol to Vanillin. ACS Catal 2022. [DOI: 10.1021/acscatal.2c02361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xin Zhao
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Ruiqi Fang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Fengliang Wang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xiang-Peng Kong
- The School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen 518055, China
| | - Yingwei Li
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
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15
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Chen QQ, He MC, Cao Z, Kong XP, Wang HB, Chai W. Combination of Fusiform Capsulectomy of the Posterior Capsule and Percutaneous Flexion Tendon Release in the Treatment of Fused Knee with Severe Flexion Contracture During Total Knee Arthroplasty—A Report of Six Cases. Front Surg 2022; 9:859426. [PMID: 36034350 PMCID: PMC9407035 DOI: 10.3389/fsurg.2022.859426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 04/27/2022] [Indexed: 11/13/2022] Open
Abstract
Purpose This clinical research aims to assess the safety and efficacy of a combination of fusiform capsulectomy of the posterior capsule and percutaneous flexion tendon release in the treatment of a fused knee with severe flexion contracture during total knee arthroplasty (TKA). Methods A retrospective analysis was performed in three patients (six knees) who had preoperative severe bony fused flexion contracture (>80°) prior to TKA and received a combination of fusiform capsulectomy of posterior capsule and percutaneous flexion tendon release during TKA between January 2016 and December 2019. The range of motion (ROM), knee functional score, postoperative complications, and radiographic results were evaluated. Result Three patients (six knees) were enrolled in this study. The mean duration of follow-up was 42.83 ± 15.77 months. The postoperative knee ROM was 100.0 (76.0, 102.75) (p < 0.01). The knee society score (KSS) clinical score increased from a preoperative 30.0 (25.0, 36.0) to a postoperative 64.0 (65.0, 78.0) (p < 0.01), and the KSS function score increased from a preoperative 0.0 (0.0, 30.0) to a postoperative 55.0 (40.0, 55.0) (p < 0.01). No implant loosening, infection, neurovascular complications, or revision were recorded in the cohort until the last follow-up. Conclusion The technique of a combination of fusiform capsulectomy of the posterior capsule and percutaneous flexion tendon release is an effective and safe method during primary TKA for a fused knee with severe flexion contracture.
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Affiliation(s)
- Qun-Qun Chen
- Department of Orthopaedic Surgery, The Third Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Guangdong Research Institute for Orthopedics and Traumatology of Chinese Medicine, Guangzhou, China
| | - Min-Cong He
- Department of Orthopaedic Surgery, The Third Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Guangdong Research Institute for Orthopedics and Traumatology of Chinese Medicine, Guangzhou, China
| | - Zheng Cao
- Department of Orthopedics, The Fourth Medical Center of PLA General Hospital, Beijing, China
- School of Medicine, Nankai University, Tianjin, China
| | - Xiang-Peng Kong
- Department of Orthopedics, The Fourth Medical Center of PLA General Hospital, Beijing, China
- National Clinical Research Center for Orthopedics, Sports Medical and Rehabilitation, Beijing, China
| | - Hai-Bin Wang
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Wei Chai
- Department of Orthopedics, The Fourth Medical Center of PLA General Hospital, Beijing, China
- National Clinical Research Center for Orthopedics, Sports Medical and Rehabilitation, Beijing, China
- Correspondence: Wei Chai
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16
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Xu Y, Jiang X, Zhou Z, Ferguson T, Obliosca J, Luo CC, Chan KW, Kong XP, Tison CK. Mucosal Delivery of HIV-1 Glycoprotein Vaccine Candidate Enabled by Short Carbon Nanotubes. Part Part Syst Charact 2022; 39:2200011. [PMID: 36186663 PMCID: PMC9523582 DOI: 10.1002/ppsc.202200011] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The HIV-1 envelope glycoprotein spike is the target of antibodies, and therefore represents the main viral antigen for antibody-based vaccine design. One of the challenges in HIV-1 vaccine development is finding efficient ways for the immune system to recognize and respond to HIV-1 without establishing an infection. Since HIV-1 enters the body at mucosal surfaces, induction of immune response at these sites is a preferred preventive approach. Nasal administration is a very effective route for mucosal immunization since it can stimulate mucosal immune responses both locally and distantly. In this paper, Luna develops a safe, short carbon nanotube (CNT)-based, needle-free delivery platform known as "CNTVac". The size of short CNT was controlled to possess HIV-1 particle-like morphology (100-200 nm) capable of efficiently delivering a broad range of antigens intranasally. PEG-Lipid served as the antigen conformation protector and mucosal barrier penetration enhancer (Schematic Figure) was localized between V1V2 antigens, which caused highly enhanced local IgA and systemic antibody IgG responses in mice and rabbits. The short CNT incorporated with PEG-Lipid could not only serve as efficient delivery system but also reduce the amount of lipid usage in order to balance the vaccine dosage in order to eliminate the potential adverse effect. These data suggest a promising platform technology for vaccine delivery.
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Affiliation(s)
- Yang Xu
- Biotech Group, Luna Labs, Luna Innovations Incorporated, Charlottesville, VA, USA
| | - Xunqing Jiang
- Department of Biochemistry and Molecular Pharmacology, US, New York, New York, USA
| | - Ziyou Zhou
- Biotech Group, Luna Labs, Luna Innovations Incorporated, Charlottesville, VA, USA
| | - Tammy Ferguson
- Biotech Group, Luna Labs, Luna Innovations Incorporated, Charlottesville, VA, USA
| | - Judy Obliosca
- Biotech Group, Luna Labs, Luna Innovations Incorporated, Charlottesville, VA, USA
| | - Christina C Luo
- Department of Biochemistry and Molecular Pharmacology, US, New York, New York, USA
| | - Kun-Wei Chan
- Department of Biochemistry and Molecular Pharmacology, US, New York, New York, USA
| | - Xiang-Peng Kong
- Department of Biochemistry and Molecular Pharmacology, US, New York, New York, USA
| | - Christopher K Tison
- Biotech Group, Luna Labs, Luna Innovations Incorporated, Charlottesville, VA, USA
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17
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Borbet TC, Perault A, Ilmain J, Chan KW, Luo CC, Bryan AM, Kirilov M, Wang W, Sheiffele P, Kong XP, Ekiert D, Torres V, Koralov SB. Leveraging mouse genetics to generate heavy-chain only antibodies for therapeutic application. The Journal of Immunology 2022. [DOI: 10.4049/jimmunol.208.supp.116.07] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Abstract
Conventional antibodies (Abs) consist of two heavy and two light immunoglobulin chains, while heavy-chain only antibodies (HCAbs), like those found in camelid and shark species, are unique because they lack a light chain binding partner. The unique structure of these HCAbs impart advantageous properties to these smaller Abs, including greater accessibility to their target antigens, higher hydrophilicity, and greater conformational stability under environmental stresses. We have generated a mouse model, the IgG3dCH1 strain, that can produce HCAbs from the endogenous murine heavy chain locus. We have shown that these mice undergo efficient B cell development in the bone marrow, and generate a diverse repertoire of B cells that populate all peripheral immune compartments. While single-cell sequencing analysis of B cells revealed some biases in VH and JH usage, it also highlighted the tremendous diversity of rearrangements that give rise to B cells bearing these single chain antibodies. We’ve been able to show that upon immunization, IgG3dCH1 animals are protected from lethal bacterial challenge with a pathogenic strain of Enterobacter hormaechei and generate pathogen specific IgG. Further, immunization with SARS-CoV2 stabilized prefusion spike protein elicited HCAbs with a KD in the nM range, measured via bio-layer interferometry. These data support this mouse being utilized as a platform for the generation of pathogen-specific HCAbs that can be further engineered for testing and application for translational outcomes.
Supported by grants from NIH (T32 AI007180, R43 AI136141).
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18
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Wang F, Fang R, Zhao X, Kong XP, Hou T, Shen K, Li Y. Ultrathin Nanosheet Assembled Multishelled Superstructures for Photocatalytic CO 2 Reduction. ACS Nano 2022; 16:4517-4527. [PMID: 35245030 DOI: 10.1021/acsnano.1c10958] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Solar-driven conversion of CO2 is considered an efficient way to tackle the energy and environmental crisis. However, the photocatalytic performance is severely restricted due to the insufficient accessible active sites and inhibited electron transfer efficiency. This work demonstrates a general in situ topological transformation strategy for the integration of uniform Co-based species to fabricate a series of multishelled superstructures (MSSs) for CO2 photocatalytic conversion. Thorough characterizations reveal the obtained MSSs feature ultrathin Co-based nanosheet assembled polyhedral structures with tunable shell numbers, inner cavity sizes, and compositions. The superstructures increase the spatial density of Co-based active sites while maintaining their high accessibility. Further, the ultrathin nanosheets also facilitate the transfer of photogenerated electrons. As a result, the ZnCo bimetallic hydroxide featuring an ultrathin nanosheet assembled quadruple-shell hollow structure (ZnCo-OH QUNH) exhibits high photocatalytic efficiency toward CO2 reduction with a CO evolution rate of 134.2 μmol h-1 and an apparent quantum yield of 6.76% at 450 nm. The quasi in situ spectra and theoretical calculations disclose that Co sites in ZnCo-OH QUNH act as highly active centers to stabilize the COOH* intermediate, while Zn species play the role of adsorption sites for the [Ru(bpy)3]2+ molecules.
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Affiliation(s)
- Fengliang Wang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Ruiqi Fang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xin Zhao
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xiang-Peng Kong
- The School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen 518055, China
| | - Tingting Hou
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Kui Shen
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Yingwei Li
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
- South China University of Technology-Zhuhai Institute of Modern Industrial Innovation, Zhuhai 519175, China
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19
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Bimela JS, Nanfack AJ, Yang P, Dai S, Kong XP, Torimiro JN, Duerr R. Antiretroviral Imprints and Genomic Plasticity of HIV-1 pol in Non-clade B: Implications for Treatment. Front Microbiol 2022; 12:812391. [PMID: 35222310 PMCID: PMC8864110 DOI: 10.3389/fmicb.2021.812391] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 12/27/2021] [Indexed: 11/13/2022] Open
Abstract
Combinational antiretroviral therapy (cART) is the most effective tool to prevent and control HIV-1 infection without an effective vaccine. However, HIV-1 drug resistance mutations (DRMs) and naturally occurring polymorphisms (NOPs) can abrogate cART efficacy. Here, we aimed to characterize the HIV-1 pol mutation landscape in Cameroon, where highly diverse HIV clades circulate, and identify novel treatment-associated mutations that can potentially affect cART efficacy. More than 8,000 functional Cameroonian HIV-1 pol sequences from 1987 to 2020 were studied for DRMs and NOPs. Site-specific amino acid frequencies and quaternary structural features were determined and compared between periods before (≤2003) and after (2004-2020) regional implementation of cART. cART usage in Cameroon induced deep mutation imprints in reverse transcriptase (RT) and to a lower extent in protease (PR) and integrase (IN), according to their relative usage. In the predominant circulating recombinant form (CRF) 02_AG (CRF02_AG), 27 canonical DRMs and 29 NOPs significantly increased or decreased in RT during cART scale-up, whereas in IN, no DRM and only seven NOPs significantly changed. The profound genomic imprints and higher prevalence of DRMs in RT compared to PR and IN mirror the dominant use of reverse transcriptase inhibitors (RTIs) in sub-Saharan Africa and the predominantly integrase strand transfer inhibitor (InSTI)-naïve study population. Our results support the potential of InSTIs for antiretroviral treatment in Cameroon; however, close surveillance of IN mutations will be required to identify emerging resistance patterns, as observed in RT and PR. Population-wide genomic analyses help reveal the presence of selective pressures and viral adaptation processes to guide strategies to bypass resistance and reinstate effective treatment.
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Affiliation(s)
- Jude S Bimela
- Department of Pathology, New York University School of Medicine, New York, NY, United States.,Department of Biochemistry, University of Yaoundé 1, Yaoundé, Cameroon.,Zuckerman Mind Brain Behavior Institute, Columbia University, New York, NY, United States
| | - Aubin J Nanfack
- Medical Diagnostic Center, Yaoundé, Cameroon.,Chantal Biya International Reference Centre for Research on HIV/AIDS Prevention and Management (CIRCB), Yaoundé, Cameroon
| | - Pengpeng Yang
- Yunnan Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, China
| | - Shaoxing Dai
- Yunnan Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, China
| | - Xiang-Peng Kong
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, NY, United States
| | - Judith N Torimiro
- Chantal Biya International Reference Centre for Research on HIV/AIDS Prevention and Management (CIRCB), Yaoundé, Cameroon.,Department of Biochemistry, Faculty of Medicine and Biomedical Sciences, University of Yaoundé 1, Yaoundé, Cameroon
| | - Ralf Duerr
- Department of Pathology, New York University School of Medicine, New York, NY, United States.,Department of Microbiology, New York University School of Medicine, New York, NY, United States
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20
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Weiss S, Itri V, Pan R, Jiang X, Luo CC, Morris L, Malherbe DC, Barnette P, Alexander J, Kong XP, Haigwood NL, Hessell AJ, Duerr R, Zolla-Pazner S. Differential V2-directed antibody responses in non-human primates infected with SHIVs or immunized with diverse HIV vaccines. Nat Commun 2022; 13:903. [PMID: 35173151 PMCID: PMC8850611 DOI: 10.1038/s41467-022-28450-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 01/25/2022] [Indexed: 11/24/2022] Open
Abstract
V2p and V2i antibodies (Abs) that are specific for epitopes in the V1V2 region of the HIV gp120 envelope (Env) do not effectively neutralize HIV but mediate Fc-dependent anti-viral activities that have been correlated with protection from, or control of HIV, SIV and SHIV infections. Here, we describe a novel molecular toolbox that allows the discrimination of antigenically and functionally distinct polyclonal V2 Ab responses. We identify different patterns of V2 Ab induction by SHIV infection and three separate vaccine regimens that aid in fine-tuning an optimized immunization protocol for inducing V2p and V2i Abs. We observe no, or weak and sporadic V2p and V2i Abs in non-vaccinated SHIV-infected NHPs, but strong V2p and/or V2i Ab responses after immunization with a V2-targeting vaccine protocol. The V2-focused vaccination is superior to both natural infection and to immunization with whole Env constructs for inducing functional V2p- and V2i-specific responses. Strikingly, levels of V2-directed Abs correlate inversely with Abs specific for peptides of V3 and C5. These data demonstrate that a V1V2-targeting vaccine has advantages over the imprecise targeting of SIV/SHIV infections and of whole Env-based immunization regimens for inducing a more focused functional V2p- and V2i-specific Ab response. Here the authors show that an HIV vaccine in non-human primates that focuses antibodies on the V1V2 region of gp120 is superior to infection or immunization with whole envelope vaccines for inducing V1V2 antibodies with anti-viral functions that correlate with protection.
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Affiliation(s)
- Svenja Weiss
- Department of Medicine, Division of Infectious Diseases, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Vincenza Itri
- Department of Medicine, Division of Infectious Diseases, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Ruimin Pan
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, NY, USA
| | - Xunqing Jiang
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, NY, USA
| | - Christina C Luo
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, NY, USA
| | - Lynn Morris
- National Institute for Communicable Diseases, National Health Laboratory Service, Sandringham, Johannesburg, South Africa.,MRC Antibody Research Unit, University of the Witwatersrand, Johannesburg and Center for the AIDS Program of Research in South Africa, Johannesburg, South Africa
| | - Delphine C Malherbe
- Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, OR, USA.,University of Texas Medical Branch, Department of Pathology, Galveston National Laboratory, Galveston, TX, USA
| | - Philip Barnette
- Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, OR, USA
| | - Jeff Alexander
- PaxVax Corporation, Redwood City, CA, USA.,JL Alexander Research and Development Consulting LLC, San Diego, CA, USA
| | - Xiang-Peng Kong
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, NY, USA
| | - Nancy L Haigwood
- Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, OR, USA
| | - Ann J Hessell
- Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, OR, USA
| | - Ralf Duerr
- Department of Microbiology, New York University School of Medicine, New York, NY, USA
| | - Susan Zolla-Pazner
- Department of Medicine, Division of Infectious Diseases, Icahn School of Medicine at Mount Sinai, New York, NY, USA. .,Department of Microbiology, Icahn School of Medicine, New York, NY, USA.
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21
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Chai W, Xu C, Guo RW, Kong XP, Fu J, Tang PF, Chen JY. Does robotic-assisted computer navigation improve acetabular cup positioning in total hip arthroplasty for Crowe III/IV hip dysplasia? A propensity score case-match analysis. Int Orthop 2022; 46:769-777. [PMID: 34997288 DOI: 10.1007/s00264-021-05232-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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Accepted: 09/24/2021] [Indexed: 11/25/2022]
Abstract
AIMS Total hip arthroplasty (THA) in patients with hip-dislocation dysplasia remains challenging. This study aims to evaluate whether these patients may benefit from robotic-assisted techniques. METHODS We reviewed 135 THAs (108 conventional THAs and 27 robotic-assisted THAs) for Crowe type III or IV from January 2017 to August 2019 in our institution. Robotic-assisted THAs were matched with conventional THAs at a 1:1 ratio (27 hips each group) using propensity score matching. The accuracy of cup positioning and clinical outcomes were compared between groups. RESULTS The inclination of the cup for conventional THAs and robotic THAs was 42.1 ± 5.7 and 41.3 ± 4.6 (p = 0.574), respectively. The anteversion of the cup for conventional THAs was significantly greater than that of robotic THAs (29.5 ± 8.1 and 18.0 ± 4.6; p < 0.001), respectively. The ratio of the acetabular cup in the Lewinnek safe zone was 37% (10/27) in conventional THAs and 96.3% (26/27) in robotic THAs (p < 0.001). Robotic THAs did not achieve better leg length discrepancy than that of conventional THAs (- 0.4 ± 10.9 mm vs. 0.4 ± 8.8 mm, p = 0.774). There was no difference in Harris Hip Score and WOMAC Osteoarthritis index between groups at the 2-year follow-up. No dislocation occurred in all cases at the final follow-up. CONCLUSION Robotic-assisted THA for patients with high dislocation improves the accuracy of the implantation of the acetabular component with respect to safe zone.
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Affiliation(s)
- Wei Chai
- Senior Department of Orthopedics, the Fourth Medical Center of Chinese PLA General Hospital, Beijing, China.,National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, Beijing, China.,Department of Orthopedics, the First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Chi Xu
- Senior Department of Orthopedics, the Fourth Medical Center of Chinese PLA General Hospital, Beijing, China.,National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, Beijing, China.,Department of Orthopedics, the First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Ren-Wen Guo
- Senior Department of Orthopedics, the Fourth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Xiang-Peng Kong
- Senior Department of Orthopedics, the Fourth Medical Center of Chinese PLA General Hospital, Beijing, China.,National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, Beijing, China.,Department of Orthopedics, the First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Jun Fu
- Senior Department of Orthopedics, the Fourth Medical Center of Chinese PLA General Hospital, Beijing, China.,National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, Beijing, China.,Department of Orthopedics, the First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Pei-Fu Tang
- Senior Department of Orthopedics, the Fourth Medical Center of Chinese PLA General Hospital, Beijing, China. .,National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, Beijing, China. .,Department of Orthopedics, the First Medical Center of Chinese PLA General Hospital, Beijing, China. .,Department of Orthopaedics, General Hospital of People's Liberation Army, No. 28 Fuxing Road, Haidian District, Beijing, 100853, China.
| | - Ji-Ying Chen
- Senior Department of Orthopedics, the Fourth Medical Center of Chinese PLA General Hospital, Beijing, China. .,National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, Beijing, China. .,Department of Orthopedics, the First Medical Center of Chinese PLA General Hospital, Beijing, China. .,Department of Orthopaedics, General Hospital of People's Liberation Army, No. 28 Fuxing Road, Haidian District, Beijing, 100853, China.
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22
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Chan KW, Luo CC, Lu H, Wu X, Kong XP. A site of vulnerability at V3 crown defined by HIV-1 bNAb M4008_N1. Nat Commun 2021; 12:6464. [PMID: 34753944 PMCID: PMC8578649 DOI: 10.1038/s41467-021-26846-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 10/18/2021] [Indexed: 11/09/2022] Open
Abstract
Identification of vulnerable sites defined by broadly neutralizing antibodies (bNAbs) on HIV-1 envelope (Env) is crucial for vaccine design, and we present here a vulnerable site defined by bNAb M4008_N1, which neutralizes about 40% of a tier-2 virus panel. A 3.2 Å resolution cryo-EM structure of M4008_N1 in complex with BG505 DS-SOSIP reveals a large, shallow protein epitope surface centered at the V3 crown of gp120 and surrounded by key glycans. M4008_N1 interacts with gp120 primarily through its hammerhead CDR H3 to form a β-sheet interaction with the V3 crown hairpin. This makes M4008_N1 compatible with the closed conformation of the prefusion Env trimer, and thus distinct from other known V3 crown mAbs. This mode of bNAb approaching the immunogenic V3 crown in the native Env trimer suggests a strategy for immunogen design targeting this site of vulnerability. Mapping of the HIV Env surface epitopes targeted by broadly neutralizing antibodies (bNAbs) is of great interest for HIV-1 vaccine design. Here, the authors present the 3.2 Å cryo-EM structure of the bNAb M4008_N1 in complex with BG505 DS-SOSIP, an engineered native-like Env trimer and observe that the bNAb epitope is centered at the V3 crown and that M4008_N1 uses its CDR H3 to form an extended β-sheet with the β-hairpin of the V3 crown in a conformation stabilized in the prefusion trimer.
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Affiliation(s)
- Kun-Wei Chan
- Department of Biochemistry and Molecular Pharmacology, NYU Grossman School of Medicine, New York, NY, 10016, USA
| | - Christina C Luo
- Department of Biochemistry and Molecular Pharmacology, NYU Grossman School of Medicine, New York, NY, 10016, USA
| | - Hong Lu
- Aaron Diamond AIDS Research Center, Columbia University Vagelos College of Physicians and Surgeons, New York, NY, 10032, USA
| | - Xueling Wu
- Aaron Diamond AIDS Research Center, Columbia University Vagelos College of Physicians and Surgeons, New York, NY, 10032, USA
| | - Xiang-Peng Kong
- Department of Biochemistry and Molecular Pharmacology, NYU Grossman School of Medicine, New York, NY, 10016, USA.
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23
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Yu H, Shao XT, Liu SY, Pei W, Kong XP, Wang Z, Wang DG. Estimating dynamic population served by wastewater treatment plants using location-based services data. Environ Geochem Health 2021; 43:4627-4635. [PMID: 33928448 DOI: 10.1007/s10653-021-00954-7] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 04/20/2021] [Indexed: 06/12/2023]
Abstract
Wastewater-based epidemiology is a useful approach to estimate population-level exposure to a wide range of substances (e.g., drugs, chemicals, biological agents) by wastewater analysis. An important uncertainty in population normalized loads generated is related to the size and variability of the actual population served by wastewater treatment plants (WWTPs). Here, we built a population model using location-based services (LBS) data to estimate dynamic consumption of illicit drugs. First, the LBS data from Tencent Location Big Data and resident population were used to train a linear population model for estimating population (r2 = 0.92). Then, the spatiotemporal accuracy of the population model was validated. In terms of temporal accuracy, we compared the model-based population with the time-aligned ammonia nitrogen (NH4-N) population within the WWTP of SEG, showing a mean squared error of < 10%. In terms of spatial accuracy, we estimated the model-based population of 42 WWTPs in Dalian and compared it with the NH4-N and design population, indicating good consistency overall (5% less than NH4-N and 4% less than design). Furthermore, methamphetamine consumption and prevalence based on the model were calculated with an average of 111 mg/day/1000 inhabitants and 0.24%, respectively, and dynamically displayed on a visualization system for real-time monitoring. Our study provided a dynamic and accurate population for estimating the population-level use of illicit drugs, much improving the temporal and spatial trend analysis of drug use. Furthermore, accurate information on drug use could be used to assess population health risks in a community.
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Affiliation(s)
- Han Yu
- College of Environmental Science and Engineering, Dalian Maritime University, No. 1 Linghai Road, Dalian, 116026, China
| | - Xue-Ting Shao
- College of Environmental Science and Engineering, Dalian Maritime University, No. 1 Linghai Road, Dalian, 116026, China
| | - Si-Yu Liu
- College of Environmental Science and Engineering, Dalian Maritime University, No. 1 Linghai Road, Dalian, 116026, China
| | - Wei Pei
- College of Environmental Science and Engineering, Dalian Maritime University, No. 1 Linghai Road, Dalian, 116026, China
| | - Xiang-Peng Kong
- College of Environmental Science and Engineering, Dalian Maritime University, No. 1 Linghai Road, Dalian, 116026, China
| | - Zhuang Wang
- Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, No. 219 Ningliu Road, Nanjing, 210044, China
| | - De-Gao Wang
- College of Environmental Science and Engineering, Dalian Maritime University, No. 1 Linghai Road, Dalian, 116026, China.
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24
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Zhao X, Wang F, Kong XP, Fang R, Li Y. Dual-Metal Hetero-Single-Atoms with Different Coordination for Efficient Synergistic Catalysis. J Am Chem Soc 2021; 143:16068-16077. [PMID: 34553595 DOI: 10.1021/jacs.1c06349] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Rationally tailoring the coordination environments of metal single atoms (SAs) is an effective approach to promote their catalytic performances, which, however, remains as a challenge to date. Here, we report a novel misplaced deposition strategy for the fabrication of differently coordinated dual-metal hetero-SAs. Systematic characterization results imply that the as-synthesized dual-metal hetero-SAs (exemplified by Cu and Co) are affixed to a hierarchical carbon support via Cu-C4 and Co-N4 coordination bonds. Density functional theory studies reveal that the strong synergistic interactions between the asymmetrically deployed CuC4 and CoN4 sites lead to remarkably polarized charge distributions, i.e., electron accumulation and deficiency around CuC4 and CoN4 sites, respectively. The obtained CuC4/CoN4@HC catalyst exhibits significantly enhanced capability in substrate adsorption and O2 activation, achieving superior catalytic performances in the oxidative esterification of aromatic aldehydes in comparison with the Cu- and Co-based SA counterparts.
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Affiliation(s)
- Xin Zhao
- State Key Laboratory of Pulp and Paper Engineering, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Fengliang Wang
- State Key Laboratory of Pulp and Paper Engineering, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xiang-Peng Kong
- The School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen 518055, China
| | - Ruiqi Fang
- State Key Laboratory of Pulp and Paper Engineering, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Yingwei Li
- State Key Laboratory of Pulp and Paper Engineering, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
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25
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Wang F, Qian G, Kong XP, Zhao X, Hou T, Chen L, Fang R, Li Y. Hierarchical Double-Shelled CoP Nanocages for Efficient Visible-Light-Driven CO 2 Reduction. ACS Appl Mater Interfaces 2021; 13:45609-45618. [PMID: 34542276 DOI: 10.1021/acsami.1c13881] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Visible-light-driven photocatalytic CO2 reduction is considered an appealing strategy to mitigate the energy crisis and environmental issues, whereas the reactivity is limited due to the difficulties in activation of inert CO2 molecule and efficient transportation of photoinduced carriers. Herein, we report the design of novel Fe doped CoP hierarchical double-shelled nanocages (Fe-CoP HDSNC) via a MOF-templated approach for highly efficient visible-light-driven CO2 reduction. The unique hierarchical double-shelled hollow architectures can greatly shorten the charge transfer distances and also expose abundant reactive sites. Moreover, Fe atoms doping is able to reduce the CO2 activation energy barrier through stabilizing the *COOH intermediates and promote the CO desorption by destabilizing the CO* adduct. As expected, the Fe-CoP HDSNC achieves an unprecedented catalytic efficiency in visible-light-driven CO2 reduction with an up to 3.25% apparent quantum yield and 90.3% CO selectivity, superior to most of the state-of-the-art photocatalysts under comparable conditions. More importantly, the Fe-CoP HDSNC is also highly effective under diluted CO2 atmosphere, suggesting the practicability of the present photocatalytic system.
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Affiliation(s)
- Fengliang Wang
- State Key Laboratory of Pulp and Paper Engineering, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Gan Qian
- State Key Laboratory of Pulp and Paper Engineering, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xiang-Peng Kong
- Sauvage Laboratory for Smart Materials, School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen 518055, China
| | - Xin Zhao
- State Key Laboratory of Pulp and Paper Engineering, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Tingting Hou
- State Key Laboratory of Pulp and Paper Engineering, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Liyu Chen
- State Key Laboratory of Pulp and Paper Engineering, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Ruiqi Fang
- State Key Laboratory of Pulp and Paper Engineering, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Yingwei Li
- State Key Laboratory of Pulp and Paper Engineering, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
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Li L, Hessell AJ, Kong XP, Haigwood NL, Gorny MK. A large repertoire of B cell lineages targeting one cluster of epitopes in a vaccinated rhesus macaque. Vaccine 2021; 39:5607-5614. [PMID: 34400018 DOI: 10.1016/j.vaccine.2021.08.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 07/28/2021] [Accepted: 08/05/2021] [Indexed: 10/20/2022]
Abstract
The repertoire of antibodies (Abs) produced upon vaccination against a particular antigenic site is rarely studied due to the complexity of the immunogens. We received such an opportunity when one rhesus macaque was immunized six times at 0, 4, 10, 16, 32, and 143 weeks with C4-447 peptide containing the 8-mer epitope for human monoclonal Ab (mAb) 447-52D specific to the V3 region of gp120 HIV-1. Strong anti-V3 antibody responses reached 50% binding titer in serum of 10-5 at week 10 that declined to 10-3 by week 70. After an additional boost of C4-447 peptide at week 143, titers rebounded to 10-5 at week 146, or 2.7 years after the first immunization. Using the blood sample at week 146, we produced 41 V3-specific recombinant mAbs by single B cell isolation and cloning. Sequence analysis revealed 21B cell lineages, single and clonally related, based on immunoglobulin gene usage and CDR3s. The broad repertoire of Abs directed to a small antigenic site shows the targeting potency of a vaccine-elicited immune response in rhesus macaques.
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Affiliation(s)
- Liuzhe Li
- Department of Pathology, New York University Grossman School of Medicine, New York, NY, USA.
| | - Ann J Hessell
- Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, OR, USA
| | - Xiang-Peng Kong
- Department of Biochemistry & Molecular Pharmacology, New York University Grossman School of Medicine, New York, NY, USA
| | - Nancy L Haigwood
- Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, OR, USA
| | - Miroslaw K Gorny
- Department of Pathology, New York University Grossman School of Medicine, New York, NY, USA.
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27
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Li L, Wang XH, Nanfack A, Kong XP, Gorny MK. The light chain of antibodies specific to the V2 region of HIV-1 can determine their function. Hum Immunol 2021; 82:923-929. [PMID: 34340867 DOI: 10.1016/j.humimm.2021.05.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 05/05/2021] [Accepted: 05/12/2021] [Indexed: 11/18/2022]
Abstract
We studied the contribution of the light chain to functions of human monoclonal antibodies (mAbs) by measuring the relationships between the rate of mutations and cross-reactivity, binding affinity and neutralization activity. We analyzed 12 mAbs of two clonal families specific to the V2 region of HIV-1 derived from two chronically HIV-1 infected individuals. The clonal mAbs exhibited a range of reactivities, and the clones with superior properties were associated with the rate of mutations and the presence of particular mutated residues in the light chains, but not in the heavy chains. Our observations suggest that for some antibodies, the light chains play a vital role in antibody evolution toward more efficient ones and also suggest the importance of optimal residues rather than the rate of mutations in the variable fragment of the antibody.
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Affiliation(s)
- Liuzhe Li
- Department of Pathology, New York University School of Medicine, New York, NY, USA; Veterans Affairs New York Harbor Healthcare System, New York, NY, USA.
| | - Xiao-Hong Wang
- Veterans Affairs New York Harbor Healthcare System, New York, NY, USA
| | - Aubin Nanfack
- Medical Diagnostic Center (MDC), Yaoundé, Cameroon; Chantal Biya International Reference Centre for Research on HIV/AIDS Prevention and Management, Yaoundé, Cameroon
| | - Xiang-Peng Kong
- Department of Biochemistry & Molecular Pharmacology, New York University School of Medicine, New York, NY, USA
| | - Miroslaw K Gorny
- Department of Pathology, New York University School of Medicine, New York, NY, USA.
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28
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Shao XT, Yu H, Lin JG, Kong XP, Wang Z, Wang DG. Presence of the ketamine analog of 2-fluorodeschloroketamine residues in wastewater. Drug Test Anal 2021; 13:1650-1657. [PMID: 34021972 DOI: 10.1002/dta.3098] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 05/04/2021] [Accepted: 05/13/2021] [Indexed: 11/11/2022]
Abstract
Ketamine (KET) analogs are increasingly emerging as new psychoactive substances (NPS). The present report describes the first detection of the KET analog, 2-fluorodeschloroketamine (2F-DCK), in influent samples collected from nine wastewater treatment plants in seven major Chinese cities from 2018 to 2020 by wastewater-based epidemiology (WBE). An analytical method based on solid-phase extraction and subsequent gas chromatography-mass spectrometry was developed for the detection of 2F-DCK and KET. The stability experiments showed that 2F-DCK and KET remained stable in wastewater for 15 days at room and frozen temperatures, and at two pH values (pH = 7 and pH = 2), with residue amounts between 90% and 110%. KET was detected in all samples, whereas 2F-DCK was detected in only four samples: from Guangzhou in 2018, Shenzhen in 2019, and Quanzhou and Nanning in 2020, indicating that 2F-DCK has been used as early as 2018 in China. The renal clearance of 2F-DCK was predicted based on the quantitative structure-pharmacokinetic relationship model, which was used to calculate an excretion factor of 3.7. The 2F-DCK consumption in four cities ranged from 3.71 ± 0.05 to 55 ± 0.09 mg/day/1000 inh, and KET ranged from 1.3 ± 0.04 to 76.5 ± 4.63 mg/day/1000 inh. This is the first study to investigate 2F-DCK by WBE, which provides relevant real-time data on the growth of NPS use, as well as useful information for the government to develop new policies.
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Affiliation(s)
- Xue-Ting Shao
- College of Environmental Science and Engineering, Dalian Maritime University, Dalian, China
| | - Han Yu
- College of Environmental Science and Engineering, Dalian Maritime University, Dalian, China
| | - Jian-Guo Lin
- College of Environmental Science and Engineering, Dalian Maritime University, Dalian, China
| | - Xiang-Peng Kong
- College of Environmental Science and Engineering, Dalian Maritime University, Dalian, China
| | - Zhuang Wang
- Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing, China
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29
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Kong XP, Jiang T, Gao J, Shi X, Shao J, Yuan Y, Qiu HJ, Zhao W. Development of a Ni-Doped VAl 3 Topological Semimetal with a Significantly Enhanced HER Catalytic Performance. J Phys Chem Lett 2021; 12:3740-3748. [PMID: 33844544 DOI: 10.1021/acs.jpclett.1c00238] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Topological materials with robust topological surface states appear to be well-suited as electrochemical catalysts. However, few studies have been published on the development of non-noble metal topological catalysts, most likely because the topological properties tend to be attributed to the s and p orbital electrons, while transition-metal catalysis mainly involves d orbital electrons. Herein, we proposed a topological semimetallic (TSM) compound, VAl3, with a surface state consisting mainly of d orbital electrons, as an electrocatalyst for the hydrogen evolution reaction (HER). Density functional theory (DFT) calculations showed that the surface state electrons enhanced the adsorption of H atoms. Moreover, the transfer of surface state electrons between the surface and adsorbed H atoms was optimized through nickel doping. We experimentally prepared single-crystals VAl3 and V0.75Ni0.25Al3 alloys. Electrochemical analysis showed that not only did V0.75Ni0.25Al3 outperform VAl3 but also it was among the best non-noble metal topological HER electrocatalysts currently available.
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Affiliation(s)
- Xiang-Peng Kong
- Sauvage Laboratory for Smart Materials, School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen 518055, People's Republic of China
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, Harbin Institute of Technology, Shenzhen 518055, People's Republic of China
| | - Tao Jiang
- Sauvage Laboratory for Smart Materials, School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen 518055, People's Republic of China
| | - JiaoJiao Gao
- Sauvage Laboratory for Smart Materials, School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen 518055, People's Republic of China
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, Harbin Institute of Technology, Shenzhen 518055, People's Republic of China
| | - Xianbiao Shi
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, Harbin Institute of Technology, Shenzhen 518055, People's Republic of China
- State Key Laboratory of Advanced Welding & Joining, Harbin Institute of Technology, Harbin 150001, People's Republic of China
| | - Jian Shao
- Sauvage Laboratory for Smart Materials, School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen 518055, People's Republic of China
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, Harbin Institute of Technology, Shenzhen 518055, People's Republic of China
| | - Yunhuan Yuan
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, Harbin Institute of Technology, Shenzhen 518055, People's Republic of China
- State Key Laboratory of Advanced Welding & Joining, Harbin Institute of Technology, Harbin 150001, People's Republic of China
| | - Hua-Jun Qiu
- Sauvage Laboratory for Smart Materials, School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen 518055, People's Republic of China
| | - WeiWei Zhao
- Sauvage Laboratory for Smart Materials, School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen 518055, People's Republic of China
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, Harbin Institute of Technology, Shenzhen 518055, People's Republic of China
- State Key Laboratory of Advanced Welding & Joining, Harbin Institute of Technology, Harbin 150001, People's Republic of China
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Hessell AJ, Powell R, Jiang X, Luo C, Weiss S, Dussupt V, Itri V, Fox A, Shapiro MB, Pandey S, Cheever T, Fuller DH, Park B, Krebs SJ, Totrov M, Haigwood NL, Kong XP, Zolla-Pazner S. Multimeric Epitope-Scaffold HIV Vaccines Target V1V2 and Differentially Tune Polyfunctional Antibody Responses. Cell Rep 2020; 28:877-895.e6. [PMID: 31340151 DOI: 10.1016/j.celrep.2019.06.074] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 03/12/2019] [Accepted: 06/21/2019] [Indexed: 11/24/2022] Open
Abstract
The V1V2 region of the HIV-1 envelope is the target of several broadly neutralizing antibodies (bNAbs). Antibodies to V1V2 elicited in the RV144 clinical trial correlated with a reduced risk of HIV infection, but these antibodies were without broad neutralizing activity. Antibodies targeting V1V2 also correlated with a reduced viral load in immunized macaques challenged with simian immunodeficiency virus (SIV) or simian/human immunodeficiency virus (SHIV). To focus immune responses on V1V2, we engrafted the native, glycosylated V1V2 domain onto five different multimeric scaffold proteins and conducted comparative immunogenicity studies in macaques. Vaccinated macaques developed high titers of plasma and mucosal antibodies that targeted structurally distinct V1V2 epitopes. Plasma antibodies displayed limited neutralizing activity but were functionally active for ADCC and phagocytosis, which was detectable 1-2 years after immunizations ended. This study demonstrates that multivalent, glycosylated V1V2-scaffold protein immunogens focus the antibody response on V1V2 and are differentially effective at inducing polyfunctional antibodies with characteristics associated with protection.
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Affiliation(s)
- Ann J Hessell
- Division of Pathobiology and Immunology, Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, OR 97006, USA.
| | - Rebecca Powell
- Department of Medicine, Division of Infectious Diseases, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Xunqing Jiang
- Department of Biochemistry and Molecular Pharmacology, NYU School of Medicine, New York, NY 10016, USA
| | - Christina Luo
- Department of Biochemistry and Molecular Pharmacology, NYU School of Medicine, New York, NY 10016, USA
| | - Svenja Weiss
- Department of Medicine, Division of Infectious Diseases, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Vincent Dussupt
- 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
| | - Vincenza Itri
- Department of Medicine, Division of Infectious Diseases, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Alisa Fox
- Department of Medicine, Division of Infectious Diseases, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Mariya B Shapiro
- Molecular Microbiology and Immunology, School of Medicine, Oregon Health and Science University, Portland, OR 97239
| | - Shilpi Pandey
- Division of Pathobiology and Immunology, Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, OR 97006, USA
| | - Tracy Cheever
- Division of Pathobiology and Immunology, Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, OR 97006, USA
| | - Deborah H Fuller
- Department of Microbiology, University of Washington School of Medicine, Seattle, WA 98195, USA; Washington National Primate Research Center, Seattle, WA 98195, USA
| | - Byung Park
- Primate Genetics Program, Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, OR 97006, USA
| | - Shelly J Krebs
- 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
| | | | - Nancy L Haigwood
- Division of Pathobiology and Immunology, Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, OR 97006, USA; Molecular Microbiology and Immunology, School of Medicine, Oregon Health and Science University, Portland, OR 97239.
| | - Xiang-Peng Kong
- Department of Biochemistry and Molecular Pharmacology, NYU School of Medicine, New York, NY 10016, USA.
| | - Susan Zolla-Pazner
- Department of Medicine, Division of Infectious Diseases, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.
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31
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Li X, Giorgi EE, Marichannegowda MH, Foley B, Xiao C, Kong XP, Chen Y, Gnanakaran S, Korber B, Gao F. Emergence of SARS-CoV-2 through recombination and strong purifying selection. Sci Adv 2020; 6:eabb9153. [PMID: 32937441 PMCID: PMC7458444 DOI: 10.1126/sciadv.abb9153] [Citation(s) in RCA: 233] [Impact Index Per Article: 58.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 05/19/2020] [Indexed: 05/20/2023]
Abstract
COVID-19 has become a global pandemic caused by the novel coronavirus SARS-CoV-2. Understanding the origins of SARS-CoV-2 is critical for deterring future zoonosis, discovering new drugs, and developing a vaccine. We show evidence of strong purifying selection around the receptor binding motif (RBM) in the spike and other genes among bat, pangolin, and human coronaviruses, suggesting similar evolutionary constraints in different host species. We also demonstrate that SARS-CoV-2's entire RBM was introduced through recombination with coronaviruses from pangolins, possibly a critical step in the evolution of SARS-CoV-2's ability to infect humans. Similar purifying selection in different host species, together with frequent recombination among coronaviruses, suggests a common evolutionary mechanism that could lead to new emerging human coronaviruses.
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Affiliation(s)
- Xiaojun Li
- Department of Medicine, Duke University Medical Center, Durham, NC 27710, USA
| | - Elena E Giorgi
- Theoretical Biology and Biophysics, Los Alamos National Laboratory, Los Alamos, NM 87544, USA
| | | | - Brian Foley
- Theoretical Biology and Biophysics, Los Alamos National Laboratory, Los Alamos, NM 87544, USA
| | - Chuan Xiao
- Department of Chemistry and Biochemistry, The University of Texas at El Paso, El Paso, TX 79968, USA
| | - Xiang-Peng Kong
- Department of Biochemistry and Molecular Pharmacology, Grossman School of Medicine, New York University, New York, NY 10016, USA
| | - Yue Chen
- Department of Medicine, Duke University Medical Center, Durham, NC 27710, USA
| | - S Gnanakaran
- Theoretical Biology and Biophysics, Los Alamos National Laboratory, Los Alamos, NM 87544, USA
| | - Bette Korber
- Theoretical Biology and Biophysics, Los Alamos National Laboratory, Los Alamos, NM 87544, USA
- New Mexico Consortium, Los Alamos, NM 87545, USA
| | - Feng Gao
- Department of Medicine, Duke University Medical Center, Durham, NC 27710, USA.
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun 130012, China
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32
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Jia M, Liberatore RA, Guo Y, Chan KW, Pan R, Lu H, Waltari E, Mittler E, Chandran K, Finzi A, Kaufmann DE, Seaman MS, Ho DD, Shapiro L, Sheng Z, Kong XP, Bieniasz PD, Wu X. VSV-Displayed HIV-1 Envelope Identifies Broadly Neutralizing Antibodies Class-Switched to IgG and IgA. Cell Host Microbe 2020; 27:963-975.e5. [PMID: 32315598 PMCID: PMC7294236 DOI: 10.1016/j.chom.2020.03.024] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 02/27/2020] [Accepted: 03/26/2020] [Indexed: 12/25/2022]
Abstract
The HIV-1 envelope (Env) undergoes conformational changes during infection. Broadly neutralizing antibodies (bNAbs) are typically isolated by using soluble Env trimers, which do not capture all Env states. To address these limitations, we devised a vesicular stomatitis virus (VSV)-based probe to display membrane-embedded Env trimers and isolated five bNAbs from two chronically infected donors, M4008 and M1214. Donor B cell receptor (BCR) repertoires identified two bNAb lineages, M4008_N1 and M1214_N1, that class-switched to immunoglobulin G (IgG) and IgA. Variants of these bNAbs reconstituted as IgA demonstrated broadly neutralizing activity, and the IgA fraction of M1214 plasma conferred neutralization. M4008_N1 epitope mapping revealed a glycan-independent V3 epitope conferring tier 2 virus neutralization. A 4.86-Å-resolution cryogenic electron microscopy (cryo-EM) structure of M1214_N1 complexed with CH505 SOSIP revealed another elongated epitope, the V2V5 corridor, extending from V2 to V5. Overall, the VSVENV probe identified bNAb lineages with neutralizing IgG and IgA members targeting distinct sites of HIV-1 Env vulnerability. VSV-displayed HIV-1 envelope trimers identified five HIV-1 bNAbs BCR repertoires identified two bNAb lineages class-switched to both IgG and IgA The V3 crown-targeting bNAb M4008_N1 conferred tier 2 virus neutralization Cryo-EM structure of bNAb M1214_N1 with CH505 SOSIP defined a V2V5 corridor epitope
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Affiliation(s)
- Manxue Jia
- Aaron Diamond AIDS Research Center, Affiliate of The Rockefeller University, New York, NY 10016, USA
| | - Rachel A Liberatore
- Laboratory of Retrovirology, The Rockefeller University, New York, NY 10065, USA; Howard Hughes Medical Institute, New York, NY 10016, USA
| | - Yicheng Guo
- Zuckerman Mind Brain Behavior Institute, Columbia University, New York, NY 10027, USA
| | - Kun-Wei Chan
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, NY 10016, USA
| | - Ruimin Pan
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, NY 10016, USA
| | - Hong Lu
- Aaron Diamond AIDS Research Center, Affiliate of The Rockefeller University, New York, NY 10016, USA
| | - Eric Waltari
- Aaron Diamond AIDS Research Center, Affiliate of The Rockefeller University, New York, NY 10016, USA
| | - Eva Mittler
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Kartik Chandran
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Andrés Finzi
- Centre de Recherche du CHUM and Université de Montréal, Montreal, QC H2X 0A9, Canada
| | - Daniel E Kaufmann
- Centre de Recherche du CHUM and Université de Montréal, Montreal, QC H2X 0A9, Canada; Center for HIV-1/AIDS Vaccine Immunology and Immunogen Discovery (CHAVI-ID), La Jolla, CA 92037, USA
| | - Michael S Seaman
- Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115, USA
| | - David D Ho
- Aaron Diamond AIDS Research Center, Affiliate of The Rockefeller University, New York, NY 10016, USA
| | - Lawrence Shapiro
- Zuckerman Mind Brain Behavior Institute, Columbia University, New York, NY 10027, USA; Department of Biochemistry and Molecular Biophysics, Columbia University, New York, NY 10032, USA; Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Zizhang Sheng
- Zuckerman Mind Brain Behavior Institute, Columbia University, New York, NY 10027, USA
| | - Xiang-Peng Kong
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, NY 10016, USA
| | - Paul D Bieniasz
- Laboratory of Retrovirology, The Rockefeller University, New York, NY 10065, USA; Howard Hughes Medical Institute, New York, NY 10016, USA
| | - Xueling Wu
- Aaron Diamond AIDS Research Center, Affiliate of The Rockefeller University, New York, NY 10016, USA.
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33
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Li X, Giorgi EE, Marichann MH, Foley B, Xiao C, Kong XP, Chen Y, Korber B, Gao F. Emergence of SARS-CoV-2 through Recombination and Strong Purifying Selection. bioRxiv 2020:2020.03.20.000885. [PMID: 32511348 PMCID: PMC7255785 DOI: 10.1101/2020.03.20.000885] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
UNLABELLED COVID-19 has become a global pandemic caused by a novel coronavirus SARS-CoV-2. Understanding the origins of SARS-CoV-2 is critical for deterring future zoonosis and for drug discovery and vaccine development. We show evidence of strong purifying selection around the receptor binding motif (RBM) in the spike gene and in other genes among bat, pangolin and human coronaviruses, indicating similar strong evolutionary constraints in different host species. We also demonstrate that SARS-CoV-2's entire RBM was introduced through recombination with coronaviruses from pangolins, possibly a critical step in the evolution of SARS-CoV-2's ability to infect humans. Similar purifying selection in different host species and frequent recombination among coronaviruses suggest a common evolutionary mechanism that could lead to new emerging human coronaviruses. ONE SENTENCE SUMMARY Extensive Recombination and Strong Purifying Selection among coronaviruses from different hosts facilitate the emergence of SARS-CoV-2.
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34
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Philips EA, Garcia-España A, Tocheva AS, Ahearn IM, Adam KR, Pan R, Mor A, Kong XP. The structural features that distinguish PD-L2 from PD-L1 emerged in placental mammals. J Biol Chem 2019; 295:4372-4380. [PMID: 31882544 DOI: 10.1074/jbc.ac119.011747] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [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: 11/01/2019] [Revised: 12/03/2019] [Indexed: 12/19/2022] Open
Abstract
Programmed cell death protein 1 (PD-1) is an inhibitory receptor on T lymphocytes that is critical for modulating adaptive immunity. As such, it has been successfully exploited for cancer immunotherapy. Programmed death ligand 1 (PD-L1) and PD-L2 are ligands for PD-1; the former is ubiquitously expressed in inflamed tissues, whereas the latter is restricted to antigen-presenting cells. PD-L2 binds to PD-1 with 3-fold stronger affinity compared with PD-L1. To date, this affinity discrepancy has been attributed to a tryptophan (W110PD-L2) that is unique to PD-L2 and has been assumed to fit snuggly into a pocket on the PD-1 surface. Contrary to this model, using surface plasmon resonance to monitor real-time binding of recombinantly-expressed and -purified proteins, we found that W110PD-L2 acts as an "elbow" that helps shorten PD-L2 engagement with PD-1 and therefore lower affinity. Furthermore, we identified a "latch" between the C and D β-strands of the binding face as the source of the PD-L2 affinity advantage. We show that the 3-fold affinity advantage of PD-L2 is the consequence of these two opposing features, the W110PD-L2 "elbow" and a C-D region "latch." Interestingly, using phylogenetic analysis, we found that these features evolved simultaneously upon the emergence of placental mammals, suggesting that PD-L2-affinity tuning was part of the alterations to the adaptive immune system required for placental gestation.
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Affiliation(s)
- Elliot A Philips
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, New York 10016
| | - Antonio Garcia-España
- Research Unit, Hospital Universitari de Tarragona Joan XXIII, Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, 43005 Tarragona, Spain
| | - Anna S Tocheva
- Columbia Center for Translational Immunology, Columbia University Medical Center, New York, New York 10032
| | - Ian M Ahearn
- Perlmutter Cancer Center, New York University School of Medicine, New York, New York 10016
| | - Kieran R Adam
- Columbia Center for Translational Immunology, Columbia University Medical Center, New York, New York 10032
| | - Ruimin Pan
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, New York 10016
| | - Adam Mor
- Columbia Center for Translational Immunology, Columbia University Medical Center, New York, New York 10032
| | - Xiang-Peng Kong
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, New York 10016
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35
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Kong XP, Liu EY, Chen ZC, Xu ML, Yu AX, Wu QY, Xia YJ, Duan R, Dong TT, Tsim KW. Synergistic Inhibition of Acetylcholinesterase by Alkaloids Derived from Stephaniae Tetrandrae Radix, Coptidis Rhizoma and Phellodendri Chinensis Cortex. Molecules 2019; 24:molecules24244567. [PMID: 31847089 PMCID: PMC6943709 DOI: 10.3390/molecules24244567] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 11/30/2019] [Accepted: 12/10/2019] [Indexed: 12/28/2022] Open
Abstract
Alkaloids having acetylcholinesterase (AChE) inhibitory activity are commonly found in traditional Chinese medicine (TCM); for example, berberine from Coptis chinensis, galantamine from Lycoris radiata, and huperzine A from Huperzia serrata. In practice of TCM, Stephaniae Tetrandrae Radix (STR) is often combined with Coptidis Rhizoma (CR) or Phellodendri Chinensis Cortex (PCC) as paired herbs during clinical application. Fangchinoline from STR and coptisine and/or berberine from CR and/or PCC are active alkaloids in inhibiting AChE. The traditional usage of paired herbs suggests the synergistic effect of fangchinoline–coptisine or fangchinoline–berberine pairing in AChE inhibition. HPLC was applied to identify the main components in herbal extracts of STR, CR, and PCC, and the AChE inhibition of their main components was determined by Ellman assay. The synergism of herb combination and active component combination was calculated by median-effect principle. Molecular docking was applied to investigate the underlying binding mechanisms of the active components with the AChE protein. It was found that fangchinoline showed AChE inhibitory potency; furthermore, fangchinoline–coptisine/berberine pairs (at ratios of 1:5, 1:2, 1:1, and 2:1) synergistically inhibited AChE; the combination index (CI) at different ratios was less than one when Fa = 0.5, suggesting synergistic inhibition of AChE. Furthermore, the molecular docking simulation supported this enzymatic inhibition. Therefore, fangchinoline–coptisine/berberine pairs, or their parental herbal mixtures, may potentially be developed as a possible therapeutic strategy for Alzheimer’s patients.
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Affiliation(s)
- Xiang-Peng Kong
- Shenzhen Key Laboratory of Edible and Medicinal Bioresources, HKUST Shenzhen Research Institute, Hi-Tech Park, Shenzhen 518057, China; (X.-P.K.); (Z.-C.C.); (M.L.X.); (Q.-Y.W.); (Y.-J.X.); (R.D.)
- Institute of Pharmaceutical & Food Engineering, Shanxi University of Chinese Medicine, 121 Daxue Road, Yuci District, Jinzhong 030619, China
| | - Etta Y.L. Liu
- Shenzhen Key Laboratory of Edible and Medicinal Bioresources, HKUST Shenzhen Research Institute, Hi-Tech Park, Shenzhen 518057, China; (X.-P.K.); (Z.-C.C.); (M.L.X.); (Q.-Y.W.); (Y.-J.X.); (R.D.)
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Zhi-Cong Chen
- Shenzhen Key Laboratory of Edible and Medicinal Bioresources, HKUST Shenzhen Research Institute, Hi-Tech Park, Shenzhen 518057, China; (X.-P.K.); (Z.-C.C.); (M.L.X.); (Q.-Y.W.); (Y.-J.X.); (R.D.)
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Miranda Li Xu
- Shenzhen Key Laboratory of Edible and Medicinal Bioresources, HKUST Shenzhen Research Institute, Hi-Tech Park, Shenzhen 518057, China; (X.-P.K.); (Z.-C.C.); (M.L.X.); (Q.-Y.W.); (Y.-J.X.); (R.D.)
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Anna X.D. Yu
- Shenzhen Key Laboratory of Edible and Medicinal Bioresources, HKUST Shenzhen Research Institute, Hi-Tech Park, Shenzhen 518057, China; (X.-P.K.); (Z.-C.C.); (M.L.X.); (Q.-Y.W.); (Y.-J.X.); (R.D.)
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Qi-Yun Wu
- Shenzhen Key Laboratory of Edible and Medicinal Bioresources, HKUST Shenzhen Research Institute, Hi-Tech Park, Shenzhen 518057, China; (X.-P.K.); (Z.-C.C.); (M.L.X.); (Q.-Y.W.); (Y.-J.X.); (R.D.)
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Ying-Jie Xia
- Shenzhen Key Laboratory of Edible and Medicinal Bioresources, HKUST Shenzhen Research Institute, Hi-Tech Park, Shenzhen 518057, China; (X.-P.K.); (Z.-C.C.); (M.L.X.); (Q.-Y.W.); (Y.-J.X.); (R.D.)
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Ran Duan
- Shenzhen Key Laboratory of Edible and Medicinal Bioresources, HKUST Shenzhen Research Institute, Hi-Tech Park, Shenzhen 518057, China; (X.-P.K.); (Z.-C.C.); (M.L.X.); (Q.-Y.W.); (Y.-J.X.); (R.D.)
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Tina T.X. Dong
- Shenzhen Key Laboratory of Edible and Medicinal Bioresources, HKUST Shenzhen Research Institute, Hi-Tech Park, Shenzhen 518057, China; (X.-P.K.); (Z.-C.C.); (M.L.X.); (Q.-Y.W.); (Y.-J.X.); (R.D.)
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
- Correspondence: (T.T.X.D.); (K.W.K.T.); Tel.: +86-755-8671-5683 (T.T.X.D.); +852-2358-7332 (K.W.K.T.)
| | - Karl W.K. Tsim
- Shenzhen Key Laboratory of Edible and Medicinal Bioresources, HKUST Shenzhen Research Institute, Hi-Tech Park, Shenzhen 518057, China; (X.-P.K.); (Z.-C.C.); (M.L.X.); (Q.-Y.W.); (Y.-J.X.); (R.D.)
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
- Correspondence: (T.T.X.D.); (K.W.K.T.); Tel.: +86-755-8671-5683 (T.T.X.D.); +852-2358-7332 (K.W.K.T.)
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Hu WH, Chan GKL, Duan R, Wang HY, Kong XP, Dong TTX, Tsim KWK. Synergy of Ginkgetin and Resveratrol in Suppressing VEGF-Induced Angiogenesis: A Therapy in Treating Colorectal Cancer. Cancers (Basel) 2019; 11:cancers11121828. [PMID: 31757048 PMCID: PMC6966653 DOI: 10.3390/cancers11121828] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [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: 09/26/2019] [Revised: 10/18/2019] [Accepted: 10/21/2019] [Indexed: 12/22/2022] Open
Abstract
Ginkgetin, a biflavone from Ginkgo biloba leaf, and resveratrol, a polyphenol found in grape and wine, are two phytochemicals being identified for its binding to vascular endothelial growth factor (VEGF): the binding, therefore, resulted in the alteration of the physiological roles of VEGF-mediated angiogenesis. The bindings of ginkgetin and resveratrol were proposed on different sites of VEGF, but both of them suppressed the angiogenic properties of VEGF. The suppressive activities of ginkgetin and resveratrol in VEGF-mediated angiogenesis were supported by several lines of evidence including (i) inhibiting the formation of sub-intestinal vessel in zebrafish embryos and microvascular sprouting in rat aortic ring; and (ii) suppressing the phosphorylations of VEGFR2, Akt, eNOS, and Erk as well as expressions of matrix metalloproteinases (MMPs), MMP-2, and MMP-9 in human umbilical vein endothelial cells (HUVECs). Here, we showed the synergy of ginkgetin and resveratrol in suppressing the VEGF-induced endothelial cell proliferation, migration, invasion, and tube formation. The synergy of ginkgetin and resveratrol was further illustrated in HT-29 colon cancer xenograft nude mice. Ginkgetin and resveratrol, when applied together, exerted a synergistic anti-tumor effect of 5-fluorouracil with decreasing microvessel density of tumors. In parallel, the combination of ginkgetin and resveratrol synergistically relieved the 5-fluorouracil-induced inflammatory response by suppressing expressions of COX-2 and inflammatory cytokines. Thus, the anti-angiogenic roles of ginkgetin and/or resveratrol could provide effective therapeutic strategy in cancer, similar to that of Avastin, in suppressing the VEGF-mediated angiogenesis during cancer development.
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Affiliation(s)
- Wei-Hui Hu
- Shenzhen Key Laboratory of Edible and Medicinal Bioresources, HKUST Shenzhen Research Institute, Hi-Tech Park, Nanshan, Shenzhen 518057, China; (W.-H.H.); (G.K.-L.C.); (R.D.); (H.-Y.W.); (X.-P.K.); (T.T.-X.D.)
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Clear Water Bay Road, Hong Kong 999077, China
| | - Gallant Kar-Lun Chan
- Shenzhen Key Laboratory of Edible and Medicinal Bioresources, HKUST Shenzhen Research Institute, Hi-Tech Park, Nanshan, Shenzhen 518057, China; (W.-H.H.); (G.K.-L.C.); (R.D.); (H.-Y.W.); (X.-P.K.); (T.T.-X.D.)
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Clear Water Bay Road, Hong Kong 999077, China
| | - Ran Duan
- Shenzhen Key Laboratory of Edible and Medicinal Bioresources, HKUST Shenzhen Research Institute, Hi-Tech Park, Nanshan, Shenzhen 518057, China; (W.-H.H.); (G.K.-L.C.); (R.D.); (H.-Y.W.); (X.-P.K.); (T.T.-X.D.)
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Clear Water Bay Road, Hong Kong 999077, China
| | - Huai-You Wang
- Shenzhen Key Laboratory of Edible and Medicinal Bioresources, HKUST Shenzhen Research Institute, Hi-Tech Park, Nanshan, Shenzhen 518057, China; (W.-H.H.); (G.K.-L.C.); (R.D.); (H.-Y.W.); (X.-P.K.); (T.T.-X.D.)
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Clear Water Bay Road, Hong Kong 999077, China
| | - Xiang-Peng Kong
- Shenzhen Key Laboratory of Edible and Medicinal Bioresources, HKUST Shenzhen Research Institute, Hi-Tech Park, Nanshan, Shenzhen 518057, China; (W.-H.H.); (G.K.-L.C.); (R.D.); (H.-Y.W.); (X.-P.K.); (T.T.-X.D.)
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Clear Water Bay Road, Hong Kong 999077, China
| | - Tina Ting-Xia Dong
- Shenzhen Key Laboratory of Edible and Medicinal Bioresources, HKUST Shenzhen Research Institute, Hi-Tech Park, Nanshan, Shenzhen 518057, China; (W.-H.H.); (G.K.-L.C.); (R.D.); (H.-Y.W.); (X.-P.K.); (T.T.-X.D.)
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Clear Water Bay Road, Hong Kong 999077, China
| | - Karl Wah-Keung Tsim
- Shenzhen Key Laboratory of Edible and Medicinal Bioresources, HKUST Shenzhen Research Institute, Hi-Tech Park, Nanshan, Shenzhen 518057, China; (W.-H.H.); (G.K.-L.C.); (R.D.); (H.-Y.W.); (X.-P.K.); (T.T.-X.D.)
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Clear Water Bay Road, Hong Kong 999077, China
- Correspondence: ; Tel.: +852-2358-7332; Fax: +852-2358-1552
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37
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Esteves PJ, Abrantes J, Baldauf HM, BenMohamed L, Chen Y, Christensen N, González-Gallego J, Giacani L, Hu J, Kaplan G, Keppler OT, Knight KL, Kong XP, Lanning DK, Le Pendu J, de Matos AL, Liu J, Liu S, Lopes AM, Lu S, Lukehart S, Manabe YC, Neves F, McFadden G, Pan R, Peng X, de Sousa-Pereira P, Pinheiro A, Rahman M, Ruvoën-Clouet N, Subbian S, Tuñón MJ, van der Loo W, Vaine M, Via LE, Wang S, Mage R. Author Correction: The wide utility of rabbits as models of human diseases. Exp Mol Med 2019; 51:1. [PMID: 31270317 PMCID: PMC6802666 DOI: 10.1038/s12276-019-0252-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
This article was originally published under a CC BY-NC-SA License, but has now been made available under a CC BY 4.0 License.
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Affiliation(s)
- Pedro J Esteves
- CIBIO, InBIO, Research Network in Biodiversity and Evolutionary Biology, Universidade do Porto, Campus de Vairão, Rua Padre Armando Quintas, 4485-661, Vairão, Portugal. .,Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, s/n, 4169-007, Porto, Portugal. .,Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde (CESPU), Gandra, Portugal.
| | - Joana Abrantes
- CIBIO, InBIO, Research Network in Biodiversity and Evolutionary Biology, Universidade do Porto, Campus de Vairão, Rua Padre Armando Quintas, 4485-661, Vairão, Portugal
| | - Hanna-Mari Baldauf
- Max von Pettenkofer Institute and Gene Center, Virology, National Reference Center for Retroviruses, Faculty of Medicine, LMU München, 81377, Munich, Germany
| | - Lbachir BenMohamed
- Laboratory of Cellular and Molecular Immunology, Gavin Herbert Eye Institute, University of California, Irvine, School of Medicine, Irvine, CA, 92697, USA.,Department of Molecular Biology and Biochemistry, University of California, Irvine School of Medicine, Irvine, CA, 92697, USA.,Institute for Immunology, University of California, Irvine School of Irvine, School of Medicine, Irvine, CA, 92697, USA
| | - Yuxing Chen
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA, 01605, USA
| | - Neil Christensen
- Departments of Pathology, Microbiology and Immunology, and Comparative Medicine, Penn State University, Hershey, PA, USA
| | - Javier González-Gallego
- Institute of Biomedicine (IBIOMED) and Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), University of León, 24071, León, Spain
| | - Lorenzo Giacani
- Departments of Medicine and Global Health, University of Washington, Seattle, USA
| | - Jiafen Hu
- Departments of Pathology, Microbiology and Immunology, and Comparative Medicine, Penn State University, Hershey, PA, USA
| | - Gilla Kaplan
- Bill and Melinda Gates Foundation, Seattle, WA, USA
| | - Oliver T Keppler
- Max von Pettenkofer Institute and Gene Center, Virology, National Reference Center for Retroviruses, Faculty of Medicine, LMU München, 81377, Munich, Germany
| | - Katherine L Knight
- Department of Microbiology and Immunology, Loyola University Chicago, Maywood, IL, 60153, USA
| | - Xiang-Peng Kong
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, NY10016, USA
| | - Dennis K Lanning
- Department of Microbiology and Immunology, Loyola University Chicago, Maywood, IL, 60153, USA
| | - Jacques Le Pendu
- CRCINA, Inserm, Université d'Angers, Université de Nantes, Nantes, France
| | - Ana Lemos de Matos
- The Biodesign Institute, Center for Immunotherapy, Vaccines, and Virotherapy, Arizona State University, Tempe, AZ, 85287-5401, USA
| | - Jia Liu
- Department of Microbiology and Immunology, University of Arkansas for Medical Sciences (UAMS), Little Rock, AR, 72205, USA
| | - Shuying Liu
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA, 01605, USA
| | - Ana M Lopes
- CIBIO, InBIO, Research Network in Biodiversity and Evolutionary Biology, Universidade do Porto, Campus de Vairão, Rua Padre Armando Quintas, 4485-661, Vairão, Portugal.,Department of Anatomy and Unit for Multidisciplinary Research in Biomedicine (UMIB), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Porto, Portugal
| | - Shan Lu
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA, 01605, USA
| | - Sheila Lukehart
- Departments of Medicine and Global Health, University of Washington, Seattle, USA
| | - Yukari C Manabe
- Division of Infectious Diseases, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Fabiana Neves
- CIBIO, InBIO, Research Network in Biodiversity and Evolutionary Biology, Universidade do Porto, Campus de Vairão, Rua Padre Armando Quintas, 4485-661, Vairão, Portugal
| | - Grant McFadden
- The Biodesign Institute, Center for Immunotherapy, Vaccines, and Virotherapy, Arizona State University, Tempe, AZ, 85287-5401, USA
| | - Ruimin Pan
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, NY10016, USA
| | - Xuwen Peng
- Departments of Pathology, Microbiology and Immunology, and Comparative Medicine, Penn State University, Hershey, PA, USA
| | - Patricia de Sousa-Pereira
- CIBIO, InBIO, Research Network in Biodiversity and Evolutionary Biology, Universidade do Porto, Campus de Vairão, Rua Padre Armando Quintas, 4485-661, Vairão, Portugal.,Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, s/n, 4169-007, Porto, Portugal.,Max von Pettenkofer Institute and Gene Center, Virology, National Reference Center for Retroviruses, Faculty of Medicine, LMU München, 81377, Munich, Germany
| | - Ana Pinheiro
- CIBIO, InBIO, Research Network in Biodiversity and Evolutionary Biology, Universidade do Porto, Campus de Vairão, Rua Padre Armando Quintas, 4485-661, Vairão, Portugal.,Department of Microbiology and Immunology, Loyola University Chicago, Maywood, IL, 60153, USA
| | - Masmudur Rahman
- The Biodesign Institute, Center for Immunotherapy, Vaccines, and Virotherapy, Arizona State University, Tempe, AZ, 85287-5401, USA
| | | | - Selvakumar Subbian
- The Public Health Research Institute (PHRI) at New Jersey Medical School, Rutgers Biomedical and Health Sciences (RBHS), Rutgers University, Newark, NJ, USA
| | - Maria Jesús Tuñón
- Institute of Biomedicine (IBIOMED) and Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), University of León, 24071, León, Spain
| | - Wessel van der Loo
- CIBIO, InBIO, Research Network in Biodiversity and Evolutionary Biology, Universidade do Porto, Campus de Vairão, Rua Padre Armando Quintas, 4485-661, Vairão, Portugal
| | - Michael Vaine
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA, 01605, USA
| | - Laura E Via
- Tubercolosis Research Section, Laboratory of Clinical Infectious Diseases, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA.,Institute of Infectious Disease and Molecular Medicine, Department of Clinical Laboratory Sciences, University of Cape Town, Cape Town, South Africa
| | - Shixia Wang
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA, 01605, USA
| | - Rose Mage
- Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA.
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Abstract
PURPOSE OF REVIEW In humans, only one independent immunologic correlate of reduced risk of HIV infection has been identified: a robust antibody (Ab) response to the V1V2 domain of the gp120 envelope (Env) protein. In recent years, the presence and level of V1V2-specific Abs has also been correlated with protection from SIV and SHIV infections. Here, we review the multitude of studies showing the in-vivo protective effects of V1V2 Abs and review their immunologic characteristics and antiviral functions. RECENT FINDINGS Structural and immunologic studies have defined four epitope families in the V1V2 domain: one epitope family, V2q, which preferentially presents as a quaternary structure of the Env trimer, and another epitope family (V2qt) which requires the quaternary trimeric Env structure; these two epitope types are recognized by two families of monoclonal Abs (mAbs)-V2q-specific and V2qt-specific mAbs-which display broad and potent neutralizing activity. A third epitope family, V2i, is present as a discontinuous conformational structure that overlays the α4β7 integrin binding motif, and a fourth epitope family (V2p) exists on V2 peptides. Antibodies specific for V2i and V2p epitopes display only poor neutralizing activity but effectively mediate other antiviral activities and have been correlated with control of and/or protection from HIV, SIV and SHIV. Notably, V2q and V2qt Abs have not been induced by any vaccines, but V2p and V2i Abs have been readily induced with various vaccines in nonhuman primates and humans. SUMMARY The correlation of vaccine-induced V2p and V2i Abs with protection from HIV, SIV and SHIV suggests that these Ab types are extremely important to induce with prophylactic vaccines.
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Affiliation(s)
- Susan Zolla-Pazner
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai
| | - Raymond Alvarez
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai
| | - Xiang-Peng Kong
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, New York, USA
| | - Svenja Weiss
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai
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39
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Tuen M, Bimela JS, Banin AN, Ding S, Harkins GW, Weiss S, Itri V, Durham AR, Porcella SF, Soni S, Mayr L, Meli J, Torimiro JN, Tongo M, Wang X, Kong XP, Nádas A, Kaufmann DE, Brumme ZL, Nanfack AJ, Quinn TC, Zolla-Pazner S, Redd AD, Finzi A, Gorny MK, Nyambi PN, Duerr R. Immune Correlates of Disease Progression in Linked HIV-1 Infection. Front Immunol 2019; 10:1062. [PMID: 31139189 PMCID: PMC6527802 DOI: 10.3389/fimmu.2019.01062] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 04/25/2019] [Indexed: 01/01/2023] Open
Abstract
Genetic and immunologic analyses of epidemiologically-linked HIV transmission enable insights into the impact of immune responses on clinical outcomes. Human vaccine trials and animal studies of HIV-1 infection have suggested immune correlates of protection; however, their role in natural infection in terms of protection from disease progression is mostly unknown. Four HIV-1+ Cameroonian individuals, three of them epidemiologically-linked in a polygamous heterosexual relationship and one incidence-matched case, were studied over 15 years for heterologous and cross-neutralizing antibody responses, antibody binding, IgA/IgG levels, antibody-dependent cellular cytotoxicity (ADCC) against cells expressing wild-type or CD4-bound Env, viral evolution, Env epitopes, and host factors including HLA-I alleles. Despite viral infection with related strains, the members of the transmission cluster experienced contrasting clinical outcomes including cases of rapid progression and long-term non-progression in the absence of strongly protective HLA-I or CCR5Δ32 alleles. Slower progression and higher CD4/CD8 ratios were associated with enhanced IgG antibody binding to native Env and stronger V1V2 antibody binding responses in the presence of viruses with residue K169 in V2. ADCC against cells expressing Env in the CD4-bound conformation in combination with low Env-specific IgA/IgG ratios correlated with better clinical outcome. This data set highlights for the first time that V1V2-directed antibody responses and ADCC against cells expressing open, CD4-exposed Env, in the presence of low plasma IgA/IgG ratios, can correlate with clinical outcome in natural infection. These parameters are comparable to the major correlates of protection, identified post-hoc in the RV144 vaccine trial; thus, they may also modulate the rate of clinical progression once infected. The findings illustrate the potential of immune correlate analysis in natural infection to guide vaccine development.
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Affiliation(s)
- Michael Tuen
- Department of Pathology, New York University School of Medicine, New York, NY, United States
| | - Jude S Bimela
- Department of Pathology, New York University School of Medicine, New York, NY, United States.,Department of Biochemistry, University of Yaoundé 1, Yaoundé, Cameroon
| | - Andrew N Banin
- Department of Pathology, New York University School of Medicine, New York, NY, United States.,Faculty of Medicine and Biomedical Sciences, University of Yaoundé 1, Yaoundé, Cameroon
| | - Shilei Ding
- Centre de Recherche du CHUM, Montréal, QC, Canada.,Département de Microbiologie, Infectiologie et Immunologie, Université de Montréal, Montréal, QC, Canada
| | - Gordon W Harkins
- South African MRC Bioinformatics Unit, South African National Bioinformatics Institute, University of the Western Cape, Bellville, South Africa
| | - Svenja Weiss
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Vincenza Itri
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Allison R Durham
- Division of Intramural Research, National Institutes of Health-National Institute of Allergy and Infectious Diseases, Bethesda, MD, United States
| | - Stephen F Porcella
- Genomics Unit, Research Technologies Branch, Division of Intramural Research, Rocky Mountain Laboratories, NIAID, NIH, Hamilton, MT, United States
| | - Sonal Soni
- Department of Pathology, New York University School of Medicine, New York, NY, United States
| | - Luzia Mayr
- Department of Pathology, New York University School of Medicine, New York, NY, United States
| | - Josephine Meli
- Medical Diagnostic Center, Yaoundé, Cameroon.,Yaoundé General Hospital, Yaoundé, Cameroon
| | - Judith N Torimiro
- Faculty of Medicine and Biomedical Sciences, University of Yaoundé 1, Yaoundé, Cameroon.,"Chantal Biya" International Reference Centre for Research on HIV/AIDS Prevention and Management, Yaoundé, Cameroon
| | - Marcel Tongo
- Center of Research for Emerging and Re-Emerging Diseases, Institute of Medical Research and Study of Medicinal Plants, Yaoundé, Cameroon.,School of Laboratory Medicine and Medical Sciences, Nelson R. Mandela School of Medicine, KwaZulu-Natal Research Innovation and Sequencing Platform, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Xiaohong Wang
- Veterans Affairs New York Harbor Healthcare Systems, New York, NY, United States
| | - Xiang-Peng Kong
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, NY, United States
| | - Arthur Nádas
- New York University School of Medicine, Institute of Environmental Medicine, New York, NY, United States
| | - Daniel E Kaufmann
- Centre de Recherche du CHUM, Montréal, QC, Canada.,Department of Medicine, Université de Montréal, Montréal, QC, Canada.,Center for HIV/AIDS Vaccine Immunology and Immunogen Discovery, The Scripps Research Institute, La Jolla, CA, United States
| | - Zabrina L Brumme
- Faculty of Health Sciences, Simon Fraser University, Burnaby, BC, Canada.,British Columbia Centre for Excellence in HIV/AIDS, St. Paul's Hospital, Vancouver, BC, Canada
| | - Aubin J Nanfack
- Department of Pathology, New York University School of Medicine, New York, NY, United States.,Medical Diagnostic Center, Yaoundé, Cameroon.,"Chantal Biya" International Reference Centre for Research on HIV/AIDS Prevention and Management, Yaoundé, Cameroon
| | - Thomas C Quinn
- Division of Intramural Research, National Institutes of Health-National Institute of Allergy and Infectious Diseases, Bethesda, MD, United States.,Department of Medicine, Johns Hopkins University, Baltimore, MD, United States
| | - Susan Zolla-Pazner
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Andrew D Redd
- Division of Intramural Research, National Institutes of Health-National Institute of Allergy and Infectious Diseases, Bethesda, MD, United States.,Department of Medicine, Johns Hopkins University, Baltimore, MD, United States
| | - Andrés Finzi
- Centre de Recherche du CHUM, Montréal, QC, Canada.,Département de Microbiologie, Infectiologie et Immunologie, Université de Montréal, Montréal, QC, Canada.,Department of Microbiology and Immunology, McGill University, Montréal, QC, Canada
| | - Miroslaw K Gorny
- Department of Pathology, New York University School of Medicine, New York, NY, United States
| | - Phillipe N Nyambi
- Department of Pathology, New York University School of Medicine, New York, NY, United States.,Veterans Affairs New York Harbor Healthcare Systems, New York, NY, United States
| | - Ralf Duerr
- Department of Pathology, New York University School of Medicine, New York, NY, United States
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Congdon EE, Chukwu JE, Shamir DB, Deng J, Ujla D, Sait HBR, Neubert TA, Kong XP, Sigurdsson EM. Tau antibody chimerization alters its charge and binding, thereby reducing its cellular uptake and efficacy. EBioMedicine 2019; 42:157-173. [PMID: 30910484 PMCID: PMC6492224 DOI: 10.1016/j.ebiom.2019.03.033] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [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: 09/21/2018] [Revised: 03/11/2019] [Accepted: 03/12/2019] [Indexed: 12/28/2022] Open
Abstract
Background Bringing antibodies from pre-clinical studies to human trials requires humanization, but this process may alter properties that are crucial for efficacy. Since pathological tau protein is primarily intraneuronal in Alzheimer's disease, the most efficacious antibodies should work both intra- and extracellularly. Thus, changes which impact uptake or antibody binding will affect antibody efficacy. Methods Initially, we examined four tau mouse monoclonal antibodies with naturally differing charges. We quantified their neuronal uptake, and efficacy in preventing toxicity and pathological seeding induced by human-derived pathological tau. Later, we generated a human chimeric 4E6 (h4E6), an antibody with well documented efficacy in multiple tauopathy models. We compared the uptake and efficacy of unmodified and chimeric antibodies in neuronal and differentiated neuroblastoma cultures. Further, we analyzed tau binding using ELISA assays. Findings Neuronal uptake of tau antibodies and their efficacy strongly depends on antibody charge. Additionally, their ability to prevent tau toxicity and seeding of tau pathology does not necessarily go together. Particularly, chimerization of 4E6 increased its charge from 6.5 to 9.6, which blocked its uptake into human and mouse cells. Furthermore, h4E6 had altered binding characteristics despite intact binding sites, compared to the mouse antibody. Importantly, these changes in uptake and binding substantially decreased its efficacy in preventing tau toxicity, although under certain conditions it did prevent pathological seeding of tau. Conclusions These results indicate that efficacy of chimeric/humanized tau antibodies should be thoroughly characterized prior to clinical trials, which may require further engineering to maintain or improve their therapeutic potential. Fund National Institutes of Health (NS077239, AG032611, R24OD18340, R24OD018339 and RR027990, Alzheimer's Association (2016-NIRG-397228) and Blas Frangione Foundation.
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Affiliation(s)
- Erin E Congdon
- New York University School of Medicine, Department of Neuroscience and Physiology, and The Neuroscience Institute, 435 E 30th St. SB1123, New York, NY 10016, United States of America
| | - Jessica E Chukwu
- New York University School of Medicine, Department of Biochemistry and Molecular Pharmacology, 550 First Ave, MSB 398, New York, NY 10016, United States of America
| | - Dov B Shamir
- New York University School of Medicine, Department of Neuroscience and Physiology, and The Neuroscience Institute, 435 E 30th St. SB1123, New York, NY 10016, United States of America
| | - Jingjing Deng
- New York University School of Medicine, Department of Cell Biology, 540 First Avenue, Skirball Institute Lab 5-18, New York, NY 10016, United States of America
| | - Devyani Ujla
- New York University School of Medicine, Department of Neuroscience and Physiology, and The Neuroscience Institute, 435 E 30th St. SB1123, New York, NY 10016, United States of America
| | - Hameetha B R Sait
- New York University School of Medicine, Department of Neuroscience and Physiology, and The Neuroscience Institute, 435 E 30th St. SB1123, New York, NY 10016, United States of America
| | - Thomas A Neubert
- New York University School of Medicine, Department of Cell Biology, 540 First Avenue, Skirball Institute Lab 5-18, New York, NY 10016, United States of America
| | - Xiang-Peng Kong
- New York University School of Medicine, Department of Biochemistry and Molecular Pharmacology, 550 First Ave, MSB 398, New York, NY 10016, United States of America
| | - Einar M Sigurdsson
- New York University School of Medicine, Department of Neuroscience and Physiology, and The Neuroscience Institute, 435 E 30th St. SB1123, New York, NY 10016, United States of America; New York University School of Medicine, Department of Psychiatry, 435 E 30th St. Science Building SB1115, New York, NY 10016, United States of America.
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41
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Chukwu JE, Congdon EE, Sigurdsson EM, Kong XP. Structural characterization of monoclonal antibodies targeting C-terminal Ser 404 region of phosphorylated tau protein. MAbs 2019; 11:477-488. [PMID: 30794086 DOI: 10.1080/19420862.2019.1574530] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 10/27/2022] Open
Abstract
Targeting tau with immunotherapies is currently the most common approach taken in clinical trials of patients with Alzheimer's disease. The most prominent pathological feature of tau is its hyperphosphorylation, which may cause the protein to aggregate into toxic assemblies that collectively lead to neurodegeneration. Of the phospho-epitopes, the region around Ser396/Ser404 has received particular attention for therapeutic targeting because of its prominence and stability in diseased tissue. Herein, we present the antigen-binding fragment (Fab)/epitope complex structures of three different monoclonal antibodies (mAbs) that target the pSer404 tau epitope region. Most notably, these structures reveal an antigen conformation similar to a previously described pathogenic tau epitope, pSer422, which was shown to have a β-strand structure that may be linked to the seeding core in tau oligomers. In addition, we have previously reported on the similarly ordered conformation observed in a pSer396 epitope, which is in tandem with pSer404. Our data are the first Fab structures of mAbs bound to this epitope region of the tau protein and support the existence of proteopathic tau conformations stabilized by specific phosphorylation events that are viable targets for immune modulation.
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Affiliation(s)
- Jessica E Chukwu
- a Department of Biochemistry & Molecular Pharmacology , New York University School of Medicine , New York , NY , USA
| | - Erin E Congdon
- b Departments of Neuroscience & Physiology, & Psychiatry , New York University School of Medicine , New York , NY , USA
| | - Einar M Sigurdsson
- b Departments of Neuroscience & Physiology, & Psychiatry , New York University School of Medicine , New York , NY , USA
| | - Xiang-Peng Kong
- a Department of Biochemistry & Molecular Pharmacology , New York University School of Medicine , New York , NY , USA
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Wang L, Izadmehr S, Kamau E, Kong XP, Chen BK. Sequential trafficking of Env and Gag to HIV-1 T cell virological synapses revealed by live imaging. Retrovirology 2019; 16:2. [PMID: 30646921 PMCID: PMC6334456 DOI: 10.1186/s12977-019-0464-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 01/07/2019] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND HIV infection is enhanced by cell adhesions that form between infected and uninfected T cells called virological synapses (VS). VS are initiated by an interaction between Env and CD4 on cell surfaces and result in the recruitment of virus assembly to the site of cell-cell contact. However, the recruitment of Env to the VS and its relationship to Gag recruitment is not well defined. RESULTS To study the trafficking of HIV-1 Env through the VS, we constructed a molecular clone of HIV carrying a green fluorescent protein-Env fusion protein called, HIV Env-isfGFP-∆V1V2. The Env-isfGFP-∆V1V2 fusion protein does not produce virus particles on its own, but can be rescued by cotransfection with full-length HIV constructs and produce virus particles that package the fluorescent Env. These rescued fluorescent Env can participate in VS formation and can be used to directly image CD4-dependent Env transfer across VS from donor to target cells. The movements of fluorescently tagged Gag and Env to the VS and transfer into target cells can be also tracked through live imaging. Time lapse live imaging reveals evidence of limited Env accumulation at the site of cell-cell contact shortly after cell adhesion, followed by Gag re-distribution to contact area. Both Gag and Env can be recruited to form button-like spots characteristic of VS. CONCLUSIONS Env and Gag are recruited to the VS in a coordinated temporal sequence and subsequently transfer together across the synapse into the target cell. Env accumulations, when observed, are earlier than Gag re-distribution to the contact area during formation of VS.
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Affiliation(s)
- Lili Wang
- 0000 0001 0670 2351grid.59734.3cDepartment of Medicine, Division of Infectious Diseases, Immunology Institute, Mount Sinai School of Medicine, New York, NY 10029 USA
| | - Sudeh Izadmehr
- 0000 0001 0670 2351grid.59734.3cDepartment of Medicine, Division of Infectious Diseases, Immunology Institute, Mount Sinai School of Medicine, New York, NY 10029 USA
| | - Edwin Kamau
- 0000 0004 1936 8753grid.137628.9Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, 550 First Avenue, New York, NY 10016 USA
| | - Xiang-Peng Kong
- 0000 0004 1936 8753grid.137628.9Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, 550 First Avenue, New York, NY 10016 USA
| | - Benjamin K. Chen
- 0000 0001 0670 2351grid.59734.3cDepartment of Medicine, Division of Infectious Diseases, Immunology Institute, Mount Sinai School of Medicine, New York, NY 10029 USA
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Kamau E, Bonneau R, Kong XP. Computational-guided determination of the functional role of 447-52D long CDRH3. Protein Eng Des Sel 2018; 31:479-487. [PMID: 31038677 PMCID: PMC6890530 DOI: 10.1093/protein/gzz007] [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: 02/22/2019] [Revised: 03/06/2019] [Accepted: 03/20/2019] [Indexed: 11/13/2022] Open
Abstract
447-52D (447) is a human monoclonal antibody that recognizes a conserved epitope in the crown region of the third variable loop (V3) of HIV-1 gp120, and like many anti-HIV-1 antibodies with broad neutralization capabilities, it has a long heavy-chain complementarity determining region (CDRH3). Here, we use a combination of computational mutagenesis and modeling in tandem with fluorescence polarization assays to interrogate the molecular basis of 447 CDRH3 length and the individual contribution of selected CDRH3 residues to affinity. We observe that 447 CDRH3 length provides a large binding surface area and the best enthalpic contributions derived from hydrophobic packing, main-chain hydrogen bonds, electrostatic and van der Waals interactions. We also found out that CDRH3 residue Try100I is critical to 447 binding affinity.
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Affiliation(s)
- Edwin Kamau
- Department of Biochemistry and Molecular Pharmacology, NYU School of Medicine, New York NY, USA
| | - Richard Bonneau
- Department of Biology, Center for Genomics and Systems Biology and Computer Science Department, Courant Institute of Mathematical Sciences, New York University, New York NY, USA
- Center for Computational Biology, Flatiron Institute, New York NY, USA
| | - Xiang-Peng Kong
- Department of Biochemistry and Molecular Pharmacology, NYU School of Medicine, New York NY, USA
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Hioe CE, Kumar R, Upadhyay C, Jan M, Fox A, Itri V, Peachman KK, Rao M, Liu L, Lo NC, Tuen M, Jiang X, Kong XP, Zolla-Pazner S. Modulation of Antibody Responses to the V1V2 and V3 Regions of HIV-1 Envelope by Immune Complex Vaccines. Front Immunol 2018; 9:2441. [PMID: 30416503 PMCID: PMC6212562 DOI: 10.3389/fimmu.2018.02441] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [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: 06/17/2018] [Accepted: 10/02/2018] [Indexed: 12/22/2022] Open
Abstract
Prophylactic HIV vaccines must elicit antibodies (Abs) against the virus envelope glycoproteins (Env) to effectively prevent HIV infection. We investigated a vaccine platform that utilizes immune complexes made of Env proteins gp120 and monoclonal Abs (mAbs) against different gp120 epitopes. We previously observed alterations in V3 antigenicity upon formation of certain gp120/mAb complexes and demonstrated the ability of these complexes to modulate the elicitation of V3 Ab responses. However, the effects on the V1V2 domain, an important target for Abs that correlate with vaccine-induced protection against HIV, have not been studied, nor have immune complex vaccines made with non-B subtype Env. This study compared subtypes B (JRFL) and CRF_01.AE (A244) Env gp120 proteins in complex with selected gp120-specific mAbs. Allosteric and antigenic changes were detected on these immune complexes, indicating that gp120/mAb interaction induces alterations on the Env surface that may modify the Env immunogenic properties. To evaluate this idea, mice were immunized with gp120/mAb complexes or their uncomplexed gp120 counterparts. The overall serum IgG titers elicited against gp120 were comparable, but a marked skewing toward V1V2 or V3 was evident and dependent on the gp120 strain and the specificity of the mAb used to form the complexes. Compared with uncomplexed gp120JRFL, gp120JRFL complexed with CD4bs or V1V2 mAbs, but not with C2 or V3 mAbs, elicited V3 Abs of greater titers and breadth, and Abs more capable of neutralizing tier 1 virus. Epitope mapping revealed a shift to a more conserved site in the V3 crown. However, the complexes did not enhance V1V2 Ab response, and the elicited V1V2 Abs were not cross-reactive. This profile contrasts with Ab responses to gp120A244/mAb complexes. Notably, gp120A244/mAb complexes induced higher levels of V1V2 Abs with some cross-reactivity, while also stimulating weak or strain-specific V3 Abs. Sera from gp120A244/mAb complex-immunized animals displayed no measurable virus neutralization but did mediate Ab-dependent cellular phagocytosis, albeit at levels similar to that induced by gp120A244 alone. These data indicate the potential utility of immune complexes as vaccines to shape Ab responses toward or away from Env sites of interest.
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Affiliation(s)
- Catarina E Hioe
- Icahn School of Medicine at Mount Sinai, New York, NY, United States.,James J. Peters VA Medical Center, Bronx, NY, United States
| | - Rajnish Kumar
- Icahn School of Medicine at Mount Sinai, New York, NY, United States.,James J. Peters VA Medical Center, Bronx, NY, United States
| | - Chitra Upadhyay
- Icahn School of Medicine at Mount Sinai, New York, NY, United States.,James J. Peters VA Medical Center, Bronx, NY, United States
| | - Muzafar Jan
- Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Alisa Fox
- Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Vincenza Itri
- Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Kristina K Peachman
- United States Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States.,Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, United States
| | - Mangala Rao
- United States Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD, United States
| | - Lily Liu
- Department of Pathology, New York University School of Medicine, New York, NY, United States
| | - Nathan C Lo
- Department of Pathology, New York University School of Medicine, New York, NY, United States
| | - Michael Tuen
- Department of Pathology, New York University School of Medicine, New York, NY, United States
| | - Xunqing Jiang
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, NY, United States
| | - Xiang-Peng Kong
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, NY, United States
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Lou JS, Xia YT, Wang HY, Kong XP, Yao P, Dong TTX, Zhou ZY, Tsim KWK. The WT1/MVP-Mediated Stabilization on mTOR/AKT Axis Enhances the Effects of Cisplatin in Non-small Cell Lung Cancer by a Reformulated Yu Ping Feng San Herbal Preparation. Front Pharmacol 2018; 9:853. [PMID: 30131696 PMCID: PMC6090061 DOI: 10.3389/fphar.2018.00853] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 07/13/2018] [Indexed: 12/11/2022] Open
Abstract
Chemo-resistance is an obstacle in therapy of lung cancer. Alternative therapy of using herbal medicine has been proposed to resolve this obstacle. Yu Ping Feng San (YPFS), a common Chinese herbal medicinal mixture, has been reported to show anti-drug resistance on cisplatin (DDP), a common lung cancer drug. To optimize the anti-cancer function of YPFS, different Chinese herbal extracts having known function to overcome lung cancer were screened in combining with YPFS, as to increase the efficacy of DDP in drug resistance lung cancer cell, A549/DDP. Amongst these herbal extracts, Ginkgo Folium exhibited the most promoting sensitized effect. This revised herbal formula, named as YPFS+GF, promoted the DDP-induced toxicity by over 2-fold as compared to that of YPFS alone; this potentiation was confirmed by inducing cell apoptosis. The anti-drug resistance of YPFS, triggered by an increase of intracellular concentration of DDP, was accompanied by an increased expression and activity of WT1, which consequently decreased the transcript level of MVP. In addition, the MVP-mediated downstream effector mTOR2/AKT was disrupted after application of YPFS+GF in DDP-treated A549/DDP cell: this disruption was characterized by the decline of mTORC2 components, e.g., Rictor, p-mTOR, as well as the phosphorylation level of its downstream protein AKT. The disruption on mTORC2/AKT could be reversed by mTORC2 inducer insulin and promoted by mTORC2 inhibitor PP242. Thus, the anti-drug resistance of YPFS+GF in DDP-treated lung cancer cells might be mediated by the down regulation of WT1/MVP axis, as well as the downstream anti-apoptotic pathway of mTORC2/AKT signaling. Herbal medicine is one of the main adjuvant therapies in non-small cell lung cancer, and this novel herbal formula supports the prescription of traditional Chinese medicine in cancer treatment.
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Affiliation(s)
- Jian-Shu Lou
- College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou, China.,Shenzhen Key Laboratory of Edible and Medicinal Bioresources, SRI, The Hong Kong University of Science and Technology, Shenzhen, China
| | - Yi-Teng Xia
- Shenzhen Key Laboratory of Edible and Medicinal Bioresources, SRI, The Hong Kong University of Science and Technology, Shenzhen, China.,Division of Life Science, Center for Chinese Medicine, The Hong Kong University of Science and Technology, Kowloon, Hong Kong
| | - Huai-You Wang
- Shenzhen Key Laboratory of Edible and Medicinal Bioresources, SRI, The Hong Kong University of Science and Technology, Shenzhen, China.,Division of Life Science, Center for Chinese Medicine, The Hong Kong University of Science and Technology, Kowloon, Hong Kong
| | - Xiang-Peng Kong
- Shenzhen Key Laboratory of Edible and Medicinal Bioresources, SRI, The Hong Kong University of Science and Technology, Shenzhen, China.,Division of Life Science, Center for Chinese Medicine, The Hong Kong University of Science and Technology, Kowloon, Hong Kong
| | - Ping Yao
- Division of Life Science, Center for Chinese Medicine, The Hong Kong University of Science and Technology, Kowloon, Hong Kong
| | - Tina T X Dong
- Shenzhen Key Laboratory of Edible and Medicinal Bioresources, SRI, The Hong Kong University of Science and Technology, Shenzhen, China.,Division of Life Science, Center for Chinese Medicine, The Hong Kong University of Science and Technology, Kowloon, Hong Kong
| | - Zhong-Yu Zhou
- Shenzhen Key Laboratory of Edible and Medicinal Bioresources, SRI, The Hong Kong University of Science and Technology, Shenzhen, China.,Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Karl W K Tsim
- Shenzhen Key Laboratory of Edible and Medicinal Bioresources, SRI, The Hong Kong University of Science and Technology, Shenzhen, China.,Division of Life Science, Center for Chinese Medicine, The Hong Kong University of Science and Technology, Kowloon, Hong Kong
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Lertjuthaporn S, Cicala C, Van Ryk D, Liu M, Yolitz J, Wei D, Nawaz F, Doyle A, Horowitch B, Park C, Lu S, Lou Y, Wang S, Pan R, Jiang X, Villinger F, Byrareddy SN, Santangelo PJ, Morris L, Wibmer CK, Biris K, Mason RD, Gorman J, Hiatt J, Martinelli E, Roederer M, Fujikawa D, Gorini G, Franchini G, Arakelyan A, Ansari AA, Pattanapanyasat K, Kong XP, Fauci AS, Arthos J. Select gp120 V2 domain specific antibodies derived from HIV and SIV infection and vaccination inhibit gp120 binding to α4β7. PLoS Pathog 2018; 14:e1007278. [PMID: 30153309 PMCID: PMC6130882 DOI: 10.1371/journal.ppat.1007278] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 09/10/2018] [Accepted: 08/12/2018] [Indexed: 01/16/2023] Open
Abstract
The GI tract is preferentially targeted during acute/early HIV-1 infection. Consequent damage to the gut plays a central role in HIV pathogenesis. The basis for preferential targeting of gut tissues is not well defined. Recombinant proteins and synthetic peptides derived from HIV and SIV gp120 bind directly to integrin α4β7, a gut-homing receptor. Using both cell-surface expressed α4β7 and a soluble α4β7 heterodimer we demonstrate that its specific affinity for gp120 is similar to its affinity for MAdCAM (its natural ligand). The gp120 V2 domain preferentially engages extended forms of α4β7 in a cation -sensitive manner and is inhibited by soluble MAdCAM. Thus, V2 mimics MAdCAM in the way that it binds to α4β7, providing HIV a potential mechanism to discriminate between functionally distinct subsets of lymphocytes, including those with gut-homing potential. Furthermore, α4β7 antagonists developed for the treatment of inflammatory bowel diseases, block V2 binding to α4β7. A 15-amino acid V2 -derived peptide is sufficient to mediate binding to α4β7. It includes the canonical LDV/I α4β7 binding site, a cryptic epitope that lies 7-9 amino acids amino terminal to the LDV/I, and residues K169 and I181. These two residues were identified in a sieve analysis of the RV144 vaccine trial as sites of vaccine -mediated immune pressure. HIV and SIV V2 mAbs elicited by both vaccination and infection that recognize this peptide block V2-α4β7 interactions. These mAbs recognize conformations absent from the β- barrel presented in a stabilized HIV SOSIP gp120/41 trimer. The mimicry of MAdCAM-α4β7 interactions by V2 may influence early events in HIV infection, particularly the rapid seeding of gut tissues, and supports the view that HIV replication in gut tissue is a central feature of HIV pathogenesis.
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Affiliation(s)
- Sakaorat Lertjuthaporn
- Department of Immunology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
- Department of Research and Development, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Claudia Cicala
- Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States of America
| | - Donald Van Ryk
- Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States of America
| | - Matthew Liu
- Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States of America
| | - Jason Yolitz
- Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States of America
| | - Danlan Wei
- Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States of America
| | - Fatima Nawaz
- Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States of America
| | - Allison Doyle
- Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States of America
| | - Brooke Horowitch
- Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States of America
| | - Chung Park
- Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States of America
| | - Shan Lu
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA, United States of America
| | - Yang Lou
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA, United States of America
| | - Shixia Wang
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA, United States of America
| | - Ruimin Pan
- Department of Biochemistry and Molecular Pharmacology, NYU School of Medicine, New York, NY, United States of America
| | - Xunqing Jiang
- Department of Biochemistry and Molecular Pharmacology, NYU School of Medicine, New York, NY, United States of America
| | - Francois Villinger
- New Iberia Research Center and Department of Biology, University of Louisiana at Lafayette, Lafayette, LA, United States of America
| | - Siddappa N. Byrareddy
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE, United States of America
| | - Philip J. Santangelo
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia, United States of America
| | - Lynn Morris
- Center for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service (NHLS), Johannesburg, South Africa
- Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Congella, South Africa
| | - Constantinos Kurt Wibmer
- Center for HIV and STIs, National Institute for Communicable Diseases of the National Health Laboratory Service (NHLS), Johannesburg, South Africa
- Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Kristin Biris
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States of America
| | - Rosemarie D. Mason
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States of America
| | - Jason Gorman
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States of America
| | - Joseph Hiatt
- Microbiology and Immunology, University of California, San Francisco, CA, United States of America
| | - Elena Martinelli
- Center for Biomedical Research, Population Council, New York, NY, United States of America
| | - Mario Roederer
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States of America
| | - Dai Fujikawa
- Animal Models and Vaccine Section, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States of America
| | - Giacomo Gorini
- Animal Models and Vaccine Section, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States of America
| | - Genoveffa Franchini
- Animal Models and Vaccine Section, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States of America
| | - Anush Arakelyan
- Section on Intercellular Interactions, Eunice Kennedy-Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, United States of America
| | - Aftab A. Ansari
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA, United States of America
| | - Kovit Pattanapanyasat
- Department of Research and Development, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Xiang-Peng Kong
- Department of Biochemistry and Molecular Pharmacology, NYU School of Medicine, New York, NY, United States of America
| | - Anthony S. Fauci
- Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States of America
| | - James Arthos
- Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States of America
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Hu WH, Wang HY, Kong XP, Xiong QP, Poon KKM, Xu L, Duan R, Chan GKL, Dong TTX, Tsim KWK. Polydatin suppresses VEGF‐induced angiogenesis through binding with VEGF and inhibiting its receptor signaling. FASEB J 2018; 33:532-544. [DOI: 10.1096/fj.201800750r] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Wei-Hui Hu
- Shenzhen Key Laboratory of Edible and Medicinal BioresourcesHong Kong University of Science and Technology (HKUST) Shenzhen Research Institute Shenzhen China
- Division of Life ScienceCenter for Chinese MedicineState Key Laboratory of Molecular NeuroscienceThe Hong Kong University of Science and Technology Hong Kong China
| | - Huai-You Wang
- Shenzhen Key Laboratory of Edible and Medicinal BioresourcesHong Kong University of Science and Technology (HKUST) Shenzhen Research Institute Shenzhen China
| | - Xiang-Peng Kong
- Shenzhen Key Laboratory of Edible and Medicinal BioresourcesHong Kong University of Science and Technology (HKUST) Shenzhen Research Institute Shenzhen China
| | - Qing-Ping Xiong
- Division of Life ScienceCenter for Chinese MedicineState Key Laboratory of Molecular NeuroscienceThe Hong Kong University of Science and Technology Hong Kong China
- Jiangsu Key Laboratory of Regional Resource Exploitation and Medicinal ResearchHuaiyin Institute of Technology Jiangsu China
| | - Karman Ka-Man Poon
- Division of Life ScienceCenter for Chinese MedicineState Key Laboratory of Molecular NeuroscienceThe Hong Kong University of Science and Technology Hong Kong China
| | - Li Xu
- Shenzhen Key Laboratory of Edible and Medicinal BioresourcesHong Kong University of Science and Technology (HKUST) Shenzhen Research Institute Shenzhen China
- Division of Life ScienceCenter for Chinese MedicineState Key Laboratory of Molecular NeuroscienceThe Hong Kong University of Science and Technology Hong Kong China
| | - Ran Duan
- Shenzhen Key Laboratory of Edible and Medicinal BioresourcesHong Kong University of Science and Technology (HKUST) Shenzhen Research Institute Shenzhen China
- Division of Life ScienceCenter for Chinese MedicineState Key Laboratory of Molecular NeuroscienceThe Hong Kong University of Science and Technology Hong Kong China
| | - Gallant Kar-Lun Chan
- Shenzhen Key Laboratory of Edible and Medicinal BioresourcesHong Kong University of Science and Technology (HKUST) Shenzhen Research Institute Shenzhen China
- Division of Life ScienceCenter for Chinese MedicineState Key Laboratory of Molecular NeuroscienceThe Hong Kong University of Science and Technology Hong Kong China
| | - Tina Ting-Xia Dong
- Shenzhen Key Laboratory of Edible and Medicinal BioresourcesHong Kong University of Science and Technology (HKUST) Shenzhen Research Institute Shenzhen China
- Division of Life ScienceCenter for Chinese MedicineState Key Laboratory of Molecular NeuroscienceThe Hong Kong University of Science and Technology Hong Kong China
| | - Karl Wah-Keung Tsim
- Shenzhen Key Laboratory of Edible and Medicinal BioresourcesHong Kong University of Science and Technology (HKUST) Shenzhen Research Institute Shenzhen China
- Division of Life ScienceCenter for Chinese MedicineState Key Laboratory of Molecular NeuroscienceThe Hong Kong University of Science and Technology Hong Kong China
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Esteves PJ, Abrantes J, Baldauf HM, BenMohamed L, Chen Y, Christensen N, González-Gallego J, Giacani L, Hu J, Kaplan G, Keppler OT, Knight KL, Kong XP, Lanning DK, Le Pendu J, de Matos AL, Liu J, Liu S, Lopes AM, Lu S, Lukehart S, Manabe YC, Neves F, McFadden G, Pan R, Peng X, de Sousa-Pereira P, Pinheiro A, Rahman M, Ruvoën-Clouet N, Subbian S, Tuñón MJ, van der Loo W, Vaine M, Via LE, Wang S, Mage R. The wide utility of rabbits as models of human diseases. Exp Mol Med 2018; 50:1-10. [PMID: 29789565 PMCID: PMC5964082 DOI: 10.1038/s12276-018-0094-1] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 02/21/2018] [Accepted: 02/27/2018] [Indexed: 12/11/2022] Open
Abstract
Studies using the European rabbit Oryctolagus cuniculus contributed to elucidating numerous fundamental aspects of antibody structure and diversification mechanisms and continue to be valuable for the development and testing of therapeutic humanized polyclonal and monoclonal antibodies. Additionally, during the last two decades, the use of the European rabbit as an animal model has been increasingly extended to many human diseases. This review documents the continuing wide utility of the rabbit as a reliable disease model for development of therapeutics and vaccines and studies of the cellular and molecular mechanisms underlying many human diseases. Examples include syphilis, tuberculosis, HIV-AIDS, acute hepatic failure and diseases caused by noroviruses, ocular herpes, and papillomaviruses. The use of rabbits for vaccine development studies, which began with Louis Pasteur’s rabies vaccine in 1881, continues today with targets that include the potentially blinding HSV-1 virus infection and HIV-AIDS. Additionally, two highly fatal viral diseases, rabbit hemorrhagic disease and myxomatosis, affect the European rabbit and provide unique models to understand co-evolution between a vertebrate host and viral pathogens. Rabbits offer a powerful complement to rodents as a model for studying human immunology, disease pathology, and responses to infectious disease. A review from Pedro Esteves at the University of Porto, Portugal, Rose Mage of the National Institute of Allergy and Infectious Disease, Bethesda, USA and colleagues highlights some of the areas of research where rabbits offer an edge over rats and mice. Rabbits have a particularly sophisticated adaptive immune system, which could provide useful insights into human biology and produce valuable research and clinical reagents. They are also excellent models for studying - infectious diseases such as syphilis and tuberculosis, which produce pathology that closely resembles that of human patients. Rabbit-specific infections such as myxomatosis are giving researchers insights into how pathogens and hosts can shape each other’s evolution.
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Affiliation(s)
- Pedro J Esteves
- CIBIO, InBIO, Research Network in Biodiversity and Evolutionary Biology, Universidade do Porto, Campus de Vairão, Rua Padre Armando Quintas, 4485-661, Vairão, Portugal. .,Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, s/n, 4169-007, Porto, Portugal. .,Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde (CESPU), Gandra, Portugal.
| | - Joana Abrantes
- CIBIO, InBIO, Research Network in Biodiversity and Evolutionary Biology, Universidade do Porto, Campus de Vairão, Rua Padre Armando Quintas, 4485-661, Vairão, Portugal
| | - Hanna-Mari Baldauf
- Max von Pettenkofer Institute and Gene Center, Virology, National Reference Center for Retroviruses, Faculty of Medicine, LMU München, 81377, Munich, Germany
| | - Lbachir BenMohamed
- Laboratory of Cellular and Molecular Immunology, Gavin Herbert Eye Institute, University of California, Irvine, School of Medicine, Irvine, CA, 92697, USA.,Department of Molecular Biology and Biochemistry, University of California, Irvine School of Medicine, Irvine, CA, 92697, USA.,Institute for Immunology, University of California, Irvine School of Irvine, School of Medicine, Irvine, CA, 92697, USA
| | - Yuxing Chen
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA, 01605, USA
| | - Neil Christensen
- Departments of Pathology, Microbiology and Immunology, and Comparative Medicine, Penn State University, Hershey, PA, USA
| | - Javier González-Gallego
- Institute of Biomedicine (IBIOMED) and Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), University of León, 24071, León, Spain
| | - Lorenzo Giacani
- Departments of Medicine and Global Health, University of Washington, Seattle, USA
| | - Jiafen Hu
- Departments of Pathology, Microbiology and Immunology, and Comparative Medicine, Penn State University, Hershey, PA, USA
| | - Gilla Kaplan
- Bill and Melinda Gates Foundation, Seattle, WA, USA
| | - Oliver T Keppler
- Max von Pettenkofer Institute and Gene Center, Virology, National Reference Center for Retroviruses, Faculty of Medicine, LMU München, 81377, Munich, Germany
| | - Katherine L Knight
- Department of Microbiology and Immunology, Loyola University Chicago, Maywood, IL, 60153, USA
| | - Xiang-Peng Kong
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, NY10016, USA
| | - Dennis K Lanning
- Department of Microbiology and Immunology, Loyola University Chicago, Maywood, IL, 60153, USA
| | - Jacques Le Pendu
- CRCINA, Inserm, Université d'Angers, Université de Nantes, Nantes, France
| | - Ana Lemos de Matos
- The Biodesign Institute, Center for Immunotherapy, Vaccines, and Virotherapy, Arizona State University, Tempe, AZ, 85287-5401, USA
| | - Jia Liu
- Department of Microbiology and Immunology, University of Arkansas for Medical Sciences (UAMS), Little Rock, AR, 72205, USA
| | - Shuying Liu
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA, 01605, USA
| | - Ana M Lopes
- CIBIO, InBIO, Research Network in Biodiversity and Evolutionary Biology, Universidade do Porto, Campus de Vairão, Rua Padre Armando Quintas, 4485-661, Vairão, Portugal.,Department of Anatomy and Unit for Multidisciplinary Research in Biomedicine (UMIB), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Porto, Portugal
| | - Shan Lu
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA, 01605, USA
| | - Sheila Lukehart
- Departments of Medicine and Global Health, University of Washington, Seattle, USA
| | - Yukari C Manabe
- Division of Infectious Diseases, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Fabiana Neves
- CIBIO, InBIO, Research Network in Biodiversity and Evolutionary Biology, Universidade do Porto, Campus de Vairão, Rua Padre Armando Quintas, 4485-661, Vairão, Portugal
| | - Grant McFadden
- The Biodesign Institute, Center for Immunotherapy, Vaccines, and Virotherapy, Arizona State University, Tempe, AZ, 85287-5401, USA
| | - Ruimin Pan
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, NY10016, USA
| | - Xuwen Peng
- Departments of Pathology, Microbiology and Immunology, and Comparative Medicine, Penn State University, Hershey, PA, USA
| | - Patricia de Sousa-Pereira
- CIBIO, InBIO, Research Network in Biodiversity and Evolutionary Biology, Universidade do Porto, Campus de Vairão, Rua Padre Armando Quintas, 4485-661, Vairão, Portugal.,Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, s/n, 4169-007, Porto, Portugal.,Max von Pettenkofer Institute and Gene Center, Virology, National Reference Center for Retroviruses, Faculty of Medicine, LMU München, 81377, Munich, Germany
| | - Ana Pinheiro
- CIBIO, InBIO, Research Network in Biodiversity and Evolutionary Biology, Universidade do Porto, Campus de Vairão, Rua Padre Armando Quintas, 4485-661, Vairão, Portugal.,Department of Microbiology and Immunology, Loyola University Chicago, Maywood, IL, 60153, USA
| | - Masmudur Rahman
- The Biodesign Institute, Center for Immunotherapy, Vaccines, and Virotherapy, Arizona State University, Tempe, AZ, 85287-5401, USA
| | | | - Selvakumar Subbian
- The Public Health Research Institute (PHRI) at New Jersey Medical School, Rutgers Biomedical and Health Sciences (RBHS), Rutgers University, Newark, NJ, USA
| | - Maria Jesús Tuñón
- Institute of Biomedicine (IBIOMED) and Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), University of León, 24071, León, Spain
| | - Wessel van der Loo
- CIBIO, InBIO, Research Network in Biodiversity and Evolutionary Biology, Universidade do Porto, Campus de Vairão, Rua Padre Armando Quintas, 4485-661, Vairão, Portugal
| | - Michael Vaine
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA, 01605, USA
| | - Laura E Via
- Tubercolosis Research Section, Laboratory of Clinical Infectious Diseases, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA.,Institute of Infectious Disease and Molecular Medicine, Department of Clinical Laboratory Sciences, University of Cape Town, Cape Town, South Africa
| | - Shixia Wang
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA, 01605, USA
| | - Rose Mage
- Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA.
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49
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Hessell AJ, Pandey S, Sutton WF, Liu L, Kong XP, Haigwood NL, Gorny MK. HIV vaccine mimicking the RV144 regimen tightly controls and ablates SHIV BaL.P4 infection in rhesus macaques. The Journal of Immunology 2018. [DOI: 10.4049/jimmunol.200.supp.125.25] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
The RV144 human HIV-1 vaccine trial provided the first and only immunologic signal to define a correlate of reduced risk. This sole independent correlate of reduced risk of HIV infection among the >150 variables studied, was the level of antibodies (Abs) reactive with the V1V2 region of HIV-1 Envelope protein. We designed vaccine/challenge experiments designed to mimic the RV144 vaccine trial to study the protective effects of vaccine-elicited immune responses in rhesus macaques (RM). Nine RM were co-immunized at weeks 0, 4, 12 and 20 intradermally with gp160 92TH023 and SIV gag DNA via gene gun together with gp120 A244 and MN proteins formulated in Adjuplex. Two weeks after the final immunization, all RM and naïve controls were challenged intrarectally with SHIVBaL.P4. Blood and mucosal secretions were collected weekly. Plasma viral load (PVL) and PBMC-associated VL were significantly different between controls and immunized RM (p=0.0091, p=0.0045, respectively). Time to infection was greater in immunized NHP (p=0.0235, Kaplan Meier). PVL in 5 RM were either undetectable or transient at 102–103 copies/ml. Midpoint titers of anti-V2 plasma binding antibodies (Abs) were ~1 Log10 lower compared to titers against cognate and heterologous gp140 and gp120. The vaccine regimen induced strong Ab responses with neutralizing activity that inversely correlated with VL to tightly control or ablate SHIV infection in 5 of the 9 immunized macaques. At necropsy no virus was detectable in lymphoid tissues. Efficacy based on this outcome is 55%, representing a milestone in pre-clinical vaccine protection. This study provides a strong basis to investigate mechanisms associated with tight viremia control, including antibody Fc-mediated activities.
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Affiliation(s)
| | | | | | - Lily Liu
- 3New York University School of Medicine
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50
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Chukwu JE, Pedersen JT, Pedersen LØ, Volbracht C, Sigurdsson EM, Kong XP. Tau Antibody Structure Reveals a Molecular Switch Defining a Pathological Conformation of the Tau Protein. Sci Rep 2018; 8:6209. [PMID: 29670132 PMCID: PMC5906480 DOI: 10.1038/s41598-018-24276-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 03/06/2018] [Indexed: 01/24/2023] Open
Abstract
Tau antibodies have shown therapeutic potential for Alzheimer's disease and several are in clinical trials. As a microtubule-associated protein, tau relies on dynamic phosphorylation for its normal functions. In tauopathies, it becomes hyperphosphorylated and aggregates into toxic assemblies, which collectively lead to neurodegeneration. Of the phospho-epitopes, the region around Ser396 has received particular attention because of its prominence and stability in tauopathies. Here we report the first structure of a monoclonal tau antibody in complex with the pathologically important phospho-Ser396 residue. Its binding region reveals tau residues Tyr394 to phospho-Ser396 stabilized in a β-strand conformation that is coordinated by a phospho-specific antigen binding site. These details highlight a molecular switch that defines this prominent conformation of tau and ways to target it. Overall, the structure of the antibody-antigen complex clarifies why certain phosphorylation sites in tau are more closely linked to neurodegeneration than others.
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Affiliation(s)
- Jessica E Chukwu
- Departments of Biochemistry & Molecular Pharmacology, New York University School of Medicine, New York, NY, USA
| | - Jan T Pedersen
- Neurodegeneration, H. Lundbeck A/S, DK-2500, Valby, Denmark
| | | | | | - Einar M Sigurdsson
- Neuroscience & Physiology, & Psychiatry, New York University School of Medicine, New York, NY, USA.
| | - Xiang-Peng Kong
- Departments of Biochemistry & Molecular Pharmacology, New York University School of Medicine, New York, NY, USA.
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