Capsid Engineering
Capsid Engineering - Related Videos
12:57
Alternative In Vitro Methods for the Determination of Viral Capsid Structural Integrity
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Cited by 6 •
2017
Routine detection methods utilizing viral genome amplification are limited by their inability to discriminate infectious from non-infectious particles. The purpose of this article is to provide detailed protocols for alternative methods to aid in discrimination of infectious norovirus particles using aptamer binding, dynamic light scattering, and transmission electron microscopy.
03:24
Visualizing Heat-Treated Viral Capsids Using Transmission Electron Microscopy
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2026
Source: Moore, M. D., et al. Alternative In Vitro Methods for the Determination of Viral Capsid Structural Integrity. J. Vis. Exp.(2017).This video demonstrates how purified viral capsids are heat-treated, prepared, and imaged using transmission electron microscopy (TEM) to reveal structural changes and heat-induced damage.
07:24
In Vitro Disassembly of Influenza A Virus Capsids by Gradient Centrifugation
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Cited by 4 •
2016
Disassembly of influenza A virus cores during virus entry into host cells is a multistep process. We describe an in vitro method to analyze the early stages of viral uncoating. In this approach, velocity gradient centrifugation is used to biochemically dissect the steps that initiate uncoating under defined conditions.
09:20
Isolation of Next-Generation Gene Therapy Vectors through Engineering, Barcoding, and Screening of Adeno-Associated Virus (AAV) Capsid Variants
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Cited by 2 •
2022
AAV peptide display library generation and subsequent validation through the barcoding of candidates with novel properties for the creation of next-generation AAVs.
13:36
Utilizing the Antigen Capsid-Incorporation Strategy for the Development of Adenovirus Serotype 5-Vectored Vaccine Approaches
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Cited by 1 •
2015
Here, we present a protocol to generate a proof-of-principle divalent adenovirus type 5 (Ad5) vector Ad5/H5-HVR1-KWAS-HVR5-His6 by utilizing the Antigen Capsid-Incorporation strategy. This vector was demonstrated to exhibit qualitative fitness, the capability to escape Ad5-positive sera in vitro, and the antigenicity as well as immunogenicity to the incorporated antigens.
FAQs
Changing exposed capsid residues can modify how viral particles recognize receptors on host cells. Because receptor interactions influence which cells or tissues a particle can enter, engineered variants may display altered tissue tropism, meaning their preferred cellular or anatomical targets. Comparing these variants helps connect specific capsid features with viral entry and biodistribution.
Capsid modifications can affect more than cell binding. They may change how efficiently particles assemble, how stable the resulting particles remain, and how well viral genomes are packaged. These properties influence whether engineered particles form usable preparations and retain functional delivery capacity, making structural comparisons important when evaluating capsid variants.
Altering capsid surface residues can change the structural features recognized by antibodies or other immune defenses. Variants may therefore differ in immune visibility even when they are designed to preserve particle assembly or cell entry. Studying these differences helps researchers examine immune evasion and assess how capsid structure contributes to protection against infection.
Researchers can compare engineered variants by examining particle assembly, genome packaging, stability, receptor binding, tissue distribution, infectivity, and immune recognition. Interpreting these properties together is essential because improving one feature may coincide with changes in another. Such comparisons reveal which capsid modifications produce the intended biological outcome rather than an isolated structural change.
Capsid engineering is useful when researchers need to tune how a viral particle interacts with host tissues or the immune system. In vaccine development, engineered particles can support investigation of immune recognition and safer designs. In viral-vector work, modifying capsid properties may help optimize targeting, stability, genome delivery, or reduced recognition by existing immune defenses.
In immunology and infection studies, engineered capsids provide a way to link viral structure with entry, immune evasion, infectivity, and protection against infection. Comparing variants can show how changes in the protein shell influence biodistribution and host responses. These findings also inform targeted delivery systems and the design of improved viral vectors.