Related Experiment Video
Updated: Apr 19, 2026
Conformational Evaluation of HIV-1 Trimeric Envelope Glycoproteins Using a Cell-based ELISA Assay
Published on: September 14, 2014
Structural and immunogenetic signatures guide CD4-mimetic HIV vaccine development
Daniel L V Bader1, Claudia T Flynn2, Oleksandr Kalyuzhniy3
1Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA 92037, USA; IAVI Neutralizing Antibody Center, The Scripps Research Institute, La Jolla, CA 92037, USA; Consortium for HIV/AIDS Vaccine Development (CHAVD), The Scripps Research Institute, La Jolla, CA 92037, USA; Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA.
Developing an HIV vaccine requires understanding broadly neutralizing antibodies (bnAbs). This study analyzes VH1-46 bnAbs, revealing diverse structures and identifying classes that can guide future vaccine design for optimal targeting.
Area of Science:
- Immunology
- Structural Biology
- Vaccine Development
Background:
- HIV vaccine strategies aim to elicit broadly neutralizing antibodies (bnAbs) targeting the CD4-binding site.
- These bnAbs are often derived from specific immunoglobulin heavy-chain variable genes, including VH1-2 and VH1-46.
Purpose of the Study:
- To present an integrated analysis of VH1-46 bnAbs to guide HIV vaccine design.
- To characterize the structural and immunogenetic features of VH1-46 bnAbs.
Main Methods:
- In vitro functional studies of VH1-46 bnAbs.
- Cryo-electron microscopy (cryo-EM) of bnAbs complexed with HIV envelope trimers.
- Comprehensive structural and immunogenetic analyses.
Main Results:
- VH1-46 bnAbs utilize diverse light-chain variable genes and LCDR3 lengths found in human repertoires.
- Unique LCDR3 signatures influence antibody paratope and binding angle.
- Three distinct VH1-46 bnAb classes (1B2530, CH235, and 561) were identified, with the 561 class having two subtypes.
Conclusions:
- VH1-46 bnAbs exhibit significant diversity in their structural and immunogenetic properties.
- Tailoring VH1-46 priming immunogens to specific bnAb classes is crucial for effective vaccine design.
- The 561 class of VH1-46 bnAbs represents a promising target for germline-targeting vaccine strategies.
More Related Videos
13:41Use of Interferon-γ Enzyme-linked Immunospot Assay to Characterize Novel T-cell Epitopes of Human Papillomavirus
Published on: March 8, 2012
08:10Simultaneous Quantification of Anti-vector and Anti-transgene-Specific CD8+ T Cells Via MHC I Tetramer Staining After Vaccination with a Viral Vector
Published on: November 28, 2018
Related Concept Videos
01:22T Cell Activation and Clonal Selection
Naive T cells that have not yet encountered an antigen express two primary CD...
01:29Immune Response Against Viral Pathogens
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...