Rational Design of Envelope Identifies Broadly Neutralizing Human Monoclonal Antibodies to HIV-1
Xueling Wu,Zhi Yong Yang,Yuxing Li,Carl Magnus Hogerkorp,William R. Schief,Michael S. Seaman,Tongqing Zhou,Stephen D. Schmidt,Lan Wu,Ling Xu,Nancy S. Longo,Krisha McKee,Sijy O'Dell,Mark K. Louder,Diane Wycuff,Yu Feng,Martha Nason,Nicole A. Doria-Rose,Mark Connors,Peter D. Kwong,Mario Roederer,Richard T. Wyatt,Gary J. Nabel,John R. Mascola +23 more
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TLDR
Three broadly neutralizing antibodies are identified, isolated from an HIV-1–infected individual, that exhibited great breadth and potency of neutralization and were specific for the co-receptor CD4-binding site of the glycoprotein 120 (gp120), part of the viral Env spike.Abstract:
Cross-reactive neutralizing antibodies (NAbs) are found in the sera of many HIV-1-infected individuals, but the virologic basis of their neutralization remains poorly understood. We used knowledge of HIV-1 envelope structure to develop antigenically resurfaced glycoproteins specific for the structurally conserved site of initial CD4 receptor binding. These probes were used to identify sera with NAbs to the CD4-binding site (CD4bs) and to isolate individual B cells from such an HIV-1-infected donor. By expressing immunoglobulin genes from individual cells, we identified three monoclonal antibodies, including a pair of somatic variants that neutralized over 90% of circulating HIV-1 isolates. Exceptionally broad HIV-1 neutralization can be achieved with individual antibodies targeted to the functionally conserved CD4bs of glycoprotein 120, an important insight for future HIV-1 vaccine design.read more
Citations
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Journal ArticleDOI
Unique Phenotypic Characteristics of Recently Transmitted HIV-1 Subtype C Envelope Glycoprotein gp120: Use of CXCR6 Coreceptor by Transmitted Founder Viruses.
Manickam Ashokkumar,Shambhu G Aralaguppe,Srikanth Tripathy,Luke Elizabeth Hanna,Ujjwal Neogi,Ujjwal Neogi +5 more
TL;DR: The biological properties of recently transmitted viruses isolated from infants who acquired infection from the mother and unique characterizations for the TF virus that establishes infection in the human host are studied.
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Accurate predictions of population-level changes in sequence and structural properties of HIV-1 Env using a volatility-controlled diffusion model.
Orlando DeLeon,Hagit Hodis,Yunxia O'Malley,Jacklyn Johnson,Hamid Salimi,Yinjie Zhai,Elizabeth Winter,Claire Remec,Noah Eichelberger,Brandon Van Cleave,Ramya Puliadi,Robert D. Harrington,Jack T. Stapleton,Jack T. Stapleton,Hillel Haim +14 more
TL;DR: Using volatility indices measured from a small number of patient samples, these tools will likely contribute to the design of population-targeted AIDS vaccines by effectively capturing the diversity of currently circulating strains and addressing properties of variants expected to appear in the future.
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Antibody-based candidate therapeutics against HIV-1: implications for virus eradication and vaccine design.
TL;DR: It is possible that bnAb-based candidate therapeutics could help eradicate HIV-1, and interaction of interactions of candidate vaccine immunogens with matured bnAbs and their putative germline predecessors, and related antibody maturation pathways is discussed.
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Neutralizing antibody VRC01 failed to select for HIV-1 mutations upon viral rebound.
Evan M. Cale,Hongjun Bai,Meera Bose,Michael A. Messina,Donn J Colby,Eric Sanders-Buell,Bethany L. Dearlove,Yifan Li,Emily Engeman,Daniel Silas,Anne Marie O'Sullivan,Brendan Mann,Suteeraporn Pinyakorn,Jintana Intasan,Khunthalee Benjapornpong,Carlo Sacdalan,Eugene Kroon,Nittaya Phanuphak,Robert Gramzinski,Sandhya Vasan,Merlin L. Robb,Nelson L. Michael,Rebecca M. Lynch,Robert T. Bailer,Amélie Pagliuzza,Nicolas Chomont,Amarendra Pegu,Nicole A. Doria-Rose,Lydie Trautmann,Trevor A Crowell,John R. Mascola,Jintanat Ananworanich,Sodsai Tovanabutra,Morgane Rolland +33 more
TL;DR: Although VRC01 levels were insufficient to prevent a resurgent infection, knowledge that they did not mediate Env mutations in acute-like viruses is relevant for antibody-based strategies in acute infection.
Journal ArticleDOI
Broadly Neutralizing Antibodies against HIV: Back to Blood
TL;DR: This review attempts to seek insights from emerging information about the human broadly neutralizing plasma response as well as its frequency, clonal composition, specificity, potency, and commonality among infected subjects.
References
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Journal ArticleDOI
Structure of an HIV gp120 envelope glycoprotein in complex with the CD4 receptor and a neutralizing human antibody
Peter D. Kwong,Richard T. Wyatt,James E. Robinson,Raymond W. Sweet,Joseph Sodroski,Wayne A. Hendrickson,Wayne A. Hendrickson +6 more
TL;DR: The structure reveals a cavity-laden CD4–gp120 interface, a conserved binding site for the chemokine receptor, evidence for a conformational change upon CD4 binding, the nature of a CD4-induced antibody epitope, and specific mechanisms for immune evasion.
Journal ArticleDOI
Identification and characterization of transmitted and early founder virus envelopes in primary HIV-1 infection
Brandon F. Keele,Elena E. Giorgi,Elena E. Giorgi,Jesus F. Salazar-Gonzalez,Julie M. Decker,Kimmy T. Pham,Maria G. Salazar,Chuanxi Sun,Truman Grayson,Shuyi Wang,Hui Li,Xiping Wei,Chunlai Jiang,Jennifer L. Kirchherr,Feng Gao,Jeffery A. Anderson,Li Hua Ping,Ronald Swanstrom,Georgia D. Tomaras,William A. Blattner,Paul A. Goepfert,J. Michael Kilby,Michael S. Saag,Eric Delwart,Michael P. Busch,Myron S. Cohen,David C. Montefiori,Barton F. Haynes,Brian Gaschen,Gayathri Athreya,Ha Y. Lee,Natasha T. Wood,Cathal Seoighe,Alan S. Perelson,Tanmoy Bhattacharya,Tanmoy Bhattacharya,Bette T. Korber,Bette T. Korber,Beatrice H. Hahn,George M. Shaw +39 more
TL;DR: A mathematical model of random viral evolution and phylogenetic tree construction is developed and used to analyze 3,449 complete env sequences derived by single genome amplification from 102 subjects with acute HIV-1 (clade B) infection, suggesting a finite window of potential vulnerability of HIV- 1 to vaccine-elicited immune responses, although phenotypic properties of transmitted Envs pose a formidable defense.
Journal ArticleDOI
Broad and potent neutralizing antibodies from an African donor reveal a new HIV-1 vaccine target.
Laura M. Walker,Sanjay Phogat,Po-Ying Chan-Hui,Denise Wagner,Pham Phung,Julie L. Goss,Terri Wrin,Melissa Simek,Steven P. Fling,Jennifer L. Mitcham,Jennifer Lehrman,Frances Priddy,Ole A. Olsen,Steven Frey,Phillip W. Hammond,Protocol G. Principal Investigators,Stephen M. Kaminsky,Timothy J. Zamb,Matthew Moyle,Wayne C. Koff,Pascal Poignard,Dennis R. Burton,Dennis R. Burton +22 more
TL;DR: High-throughput screening has revealed two new broadly neutralizing antibodies from a clade A–infected donor in Africa, which exhibit great potency and are able to neutralize a wide range of viruses from many different clades.
Journal ArticleDOI
Design of a Novel Globular Protein Fold with Atomic-Level Accuracy
TL;DR: A general computational strategy that iterates between sequence design and structure prediction to design a 93-residue α/β protein called Top7 with a novel sequence and topology, found experimentally to be folded and extremely stable.
Journal ArticleDOI
The antigenic structure of the HIV gp120 envelope glycoprotein
Richard T. Wyatt,Peter D. Kwong,Elizabeth Desjardins,Raymond W. Sweet,James E. Robinson,Wayne A. Hendrickson,Joseph Sodroski +6 more
TL;DR: The spatial organization of conserved neutralization epitopes on gp120 is described, using epitope maps in conjunction with the X-ray crystal structure of a ternary complex that includes a gp120 core, CD4 and a neutralizing antibody.
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