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• CH235: This study looks at the role of somatic mutations within antibody variable and framework regions (FWR) in bNAbs and how these mutations alter thermostability and neutralization as the Ab lineage reaches maturation. The emergence and selection of different mutations in the complementarity-determining and framework regions are necessary to maintain a balance between antibody function and stability. The study shows that all major classes of bnAbs (DH2070, CH103, CH235 etc.) have lower thermostability than their corresponding inferred UCA antibodies. Henderson2019 (neutralization, antibody lineage, broad neutralizer)
• CH235: This review discusses current HIV bNAb immunogen design strategies, recent progress made in the development of animal models to evaluate potential vaccine candidates, advances in the technology to analyze antibody responses, and emerging concepts in understanding B cell developmental pathways that may facilitate HIV vaccine design strategies. Andrabi2018 (vaccine antigen design, review)
• CH235: This study reports host tolerance mechanisms that limit the development of CD4bs and HCDR3-binder bNAbs via sequential HIV-1 Env vaccination. Vaccine-induced macaque CD4bs bnAbs recognize open Env trimers, and accumulate relatively modest somatic mutations. In naive CD4bs, unmutated common ancestor knock-in mice Env + B cell clones develop anergy and partial deletion at the transitional to mature B cell stage, but become Env- upon receptor editing. Stepwise immunization initiates CD4bs-bnAb responses, but immune tolerance mechanisms restrict their development. Crystal structure of DH522 showed footprints of CH235 and CD4 attachment inhibitor N-(4-bromophenyl)-N′-(2,2,6,6-tetramethylpiperidin-4-yl)ethanediamide (NBD-557). Williams2017a (glycosylation, structure, antibody lineage, chimeric antibody)
• CH235: This review discussed antibody-virus coevolution and lineage development as a path to elicit broadly neutralizing Abs. CD4bs mAbs from donor CH505 (lineages CH103 and CH235) were used as main examples. Bonsignori2017a (review, antibody lineage)
• CH235: This review classified and mapped the binding regions of 32 bNAbs isolated 2010-2016. Wu2016 (review)
• CH235: In 5 years additional members of the CH235 clonal lineage were isolated based on deep sequencing of donor CH505's V_L and V_H chains at 17 timepoints in the donor's infection. Two of these had greater neutralization potency, CH235.9 and CH235.12. Study of crystal structures indicated a site of vulnerability near the Env CD4 binding site. The lineages of CH103 and CH235, both derived from Donor CH505 were compared - CH103 lineage K_d increased an order of magnitude each step of maturation but maintained a fast association rate; CH235 lineage however, had slower K_ds and K_as over maturation. CH235 neutralized 28% of a 75-autologous virus panel and 17% of a 202-multiclade Env-psuedovirus panel, both at potencies of <50 µg/ml. This mAb is auto- and poly-reactive to DNA, and an 8ANC131-class bnAb. Bonsignori2016 (neutralization, binding affinity, antibody sequence, antibody lineage)
• CH235: As compared to early mutations in V- and CD4-binding loops that result in escape from antibody CH103, mutations in patient CH505's HIV-1 Env loop D generated a virus variant that showed increased binding to and neutralization by bnAb CH103. The Env loop D mutations were driven by this independent antibody from a separate B-lineage, CH235. Thus, co-operation between 2 different B cell lineages in early infection induced potent, cross-reactive bnAb CH103 development. CH235 neutralized patient CH505's T/F virus with 7 fold greater potency than antibody CH103. D loop mutants M11, M7, M8, M9, M20 and M21 however were poorly or not neutralized by CH235. Gao2014 (antibody generation, neutralization)

References

Showing 7 of 7 references.

Isolation Paper
Gao2014 Feng Gao, Mattia Bonsignori, Hua-Xin Liao, Amit Kumar, Shi-Mao Xia, Xiaozhi Lu, Fangping Cai, Kwan-Ki Hwang, Hongshuo Song, Tongqing Zhou, Rebecca M. Lynch, S. Munir Alam, M. Anthony Moody, Guido Ferrari, Mark Berrong, Garnett Kelsoe, George M. Shaw, Beatrice H. Hahn, David C. Montefiori, Gift Kamanga, Myron S. Cohen, Peter Hraber, Peter D. Kwong, Bette T. Korber, John R. Mascola, Thomas B. Kepler, and Barton F. Haynes. Cooperation of B Cell Lineages in Induction of HIV-1-Broadly Neutralizing Antibodies. Cell, 158(3):481-491, 31 Jul 2014. PubMed ID: 25065977. Show all entries for this paper.

Bonsignori2016 Mattia Bonsignori, Tongqing Zhou, Zizhang Sheng, Lei Chen, Feng Gao, M. Gordon Joyce, Gabriel Ozorowski, Gwo-Yu Chuang, Chaim A. Schramm, Kevin Wiehe, S. Munir Alam, Todd Bradley, Morgan A. Gladden, Kwan-Ki Hwang, Sheelah Iyengar, Amit Kumar, Xiaozhi Lu, Kan Luo, Michael C. Mangiapani, Robert J. Parks, Hongshuo Song, Priyamvada Acharya, Robert T. Bailer, Allen Cao, Aliaksandr Druz, Ivelin S. Georgiev, Young D. Kwon, Mark K. Louder, Baoshan Zhang, Anqi Zheng, Brenna J. Hill, Rui Kong, Cinque Soto, NISC Comparative Sequencing Program, James C. Mullikin, Daniel C. Douek, David C. Montefiori, Michael A. Moody, George M. Shaw, Beatrice H. Hahn, Garnett Kelsoe, Peter T. Hraber, Bette T. Korber, Scott D. Boyd, Andrew Z. Fire, Thomas B. Kepler, Lawrence Shapiro, Andrew B. Ward, John R. Mascola, Hua-Xin Liao, Peter D. Kwong, and Barton F. Haynes. Maturation Pathway from Germline to Broad HIV-1 Neutralizer of a CD4-Mimic Antibody. Cell, 165(2):449-463, 7 Apr 2016. PubMed ID: 26949186. Show all entries for this paper.

Wu2016 Xueling Wu and Xiang-Peng Kong. Antigenic Landscape of the HIV-1 Envelope and New Immunological Concepts Defined by HIV-1 Broadly Neutralizing Antibodies. Curr. Opin. Immunol., 42:56-64, Oct 2016. PubMed ID: 27289425. Show all entries for this paper.

Bonsignori2017a Mattia Bonsignori, Hua-Xin Liao, Feng Gao, Wilton B. Williams, S. Munir Alam, David C. Montefiori, and Barton F. Haynes. Antibody-Virus Co-evolution in HIV Infection: Paths for HIV Vaccine Development. Immunol. Rev., 275(1):145-160, Jan 2017. PubMed ID: 28133802. Show all entries for this paper.

Williams2017a Wilton B. Williams, Jinsong Zhang, Chuancang Jiang, Nathan I. Nicely, Daniela Fera, Kan Luo, M. Anthony Moody, Hua-Xin Liao, S. Munir Alam, Thomas B. Kepler, Akshaya Ramesh, Kevin Wiehe, James A. Holland, Todd Bradley, Nathan Vandergrift, Kevin O. Saunders, Robert Parks, Andrew Foulger, Shi-Mao Xia, Mattia Bonsignori, David C. Montefiori, Mark Louder, Amanda Eaton, Sampa Santra, Richard Scearce, Laura Sutherland, Amanda Newman, Hilary Bouton-Verville, Cindy Bowman, Howard Bomze, Feng Gao, Dawn J. Marshall, John F. Whitesides, Xiaoyan Nie, Garnett Kelsoe, Steven G. Reed, Christopher B. Fox, Kim Clary, Marguerite Koutsoukos, David Franco, John R. Mascola, Stephen C. Harrison, Barton F. Haynes, and Laurent Verkoczy. Initiation of HIV Neutralizing B Cell Lineages with Sequential Envelope Immunizations. Nat. Commun., 8(1):1732, 23 Nov 2017. PubMed ID: 29170366. Show all entries for this paper.

Andrabi2018 Raiees Andrabi, Jinal N. Bhiman, and Dennis R. Burton. Strategies for a Multi-Stage Neutralizing Antibody-Based HIV Vaccine. Curr. Opin. Immunol., 53:143-151, 15 May 2018. PubMed ID: 29775847. Show all entries for this paper.

Henderson2019 Rory Henderson, Brian E. Watts, Hieu N. Ergin, Kara Anasti, Robert Parks, Shi-Mao Xia, Ashley Trama, Hua-Xin Liao, Kevin O. Saunders, Mattia Bonsignori, Kevin Wiehe, Barton F. Haynes, and S. Munir Alam. Selection of Immunoglobulin Elbow Region Mutations Impacts Interdomain Conformational Flexibility in HIV-1 Broadly Neutralizing Antibodies. Nat. Commun., 10(1):654, 8 Feb 2019. PubMed ID: 30737386. Show all entries for this paper.