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Simple and Robust in vivo and in vitro Approach for Studying Virus Assembly
Published on: March 1, 2012
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In vitro assembly of a viral envelope
Penny Miles1, Peter Cassidy, Lynn Donlon
1Chemical Engineering and Advanced Materials, Newcastle University, Newcastle Upon Tyne, NE1 7RU, UK. d.j.frankel@newcastle.ac.uk.
Soft Matter
|August 25, 2015
Summary
This study reveals how viral glycoproteins influence lipid envelope assembly and fusion. Understanding these physical interactions is key for developing new virus-based technologies like virosomes.
Area of Science:
- Biophysics
- Virology
- Materials Science
Background:
- Enveloped viruses like influenza and Ebola utilize host cell lipid bilayers and glycoproteins for infection.
- The molecular mechanisms governing the assembly of viral envelopes and the physical interactions between lipids and glycoproteins remain poorly understood.
Purpose of the Study:
- To investigate the assembly of human immunodeficiency virus (HIV) glycoproteins within lipid vesicles.
- To analyze the physical interactions between viral glycoproteins and lipid bilayers.
- To explore the potential for developing virus-based technologies such as virosomes.
Main Methods:
- Assembly of HIV glycoproteins in artificial lipid vesicles.
- Atomic force microscopy (AFM) to observe vesicle fusion and morphology.
- Use of supported lipid bilayers to study glycoprotein interactions.
Main Results:
- Inclusion of glycoproteins induced distortion in lipid vesicles, altering their fusion behavior and morphology.
- Non-spherical morphology suggests a potential role for the viral capsid in enveloped virus stability.
- Interactions between gp41 and gp120 formed unique, one-molecule-high molecular wires with a zigzag gp120 arrangement.
Conclusions:
- Physical and chemical interactions significantly impact glycoprotein-lipid assembly.
- Findings provide insights into viral envelope formation and stability.
- This research informs the design of novel virus-based technologies, including virosomes.
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