Exploring the Paths of Self-Assembly and Disassembly of Virions and Virus-Like Particles

A special issue of Viruses (ISSN 1999-4915). This special issue belongs to the section "General Virology".

Deadline for manuscript submissions: closed (31 March 2023) | Viewed by 4974

Special Issue Editor


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Guest Editor
Centro de Biología Molecular “Severo Ochoa”, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
Interests: physical virology; self-assembly; disassembly; antivirals; mechanical properties; infectivity; human rhinoviruses; human immunodeficiency virus

Special Issue Information

Dear Colleagues,

The development of effective antivirals requires a thorough understanding of the molecular details involved in the viral life cycle. Among the functions performed by viral capsids is that of enclosing the genetic content immediately after viral morphogenesis and until a new cell is infected, then the viral genes must exit the capsid to continue with the subsequent steps of infection. Every virus must deal with these two critical and antagonist steps that, in some cases, have profound similarities in their molecular downhill transition toward less energetic states.

To decipher how these processes occur, experimental and theoretical approaches have been carried out, obtaining complementary data that enable us to determine how to interfere with these processes, so finely tuned by nature. Structural and time-resolved experimental techniques (especially single-molecule methodologies), in combination with theoretical modeling, have boosted our knowledge about the molecular details of such complex processes. By gaining the understanding of how a virus assembles or dismantles, it becomes possible to design efficient and broad antivirals targeted to interfere with these two processes. Furthermore, the acquired knowhow would allow the use of virus-like particles in vaccine design and for other nanotechnological purposes.

This Special Issue will explore the fundamental basis of virus assembly and disassembly processes. As this multidisciplinary research field prominently includes physics, biology, and chemistry, original papers in these areas investigating the fundamental basis of self-assembly (and disassembly) processes are welcome, especially those proposing new models, antiviral strategies or implications for nanotechnological use.

Dr. Alejandro Valbuena
Guest Editor

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Keywords

  • virus self-assembly
  • nucleic acid–protein interactions
  • virus disassembly
  • viral capsid dynamics
  • antivirals
  • infectivity
  • virus-like particles
  • nanoparticles
  • nanomaterials

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Published Papers (2 papers)

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Research

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15 pages, 5585 KiB  
Article
Electrostatic Screening, Acidic pH and Macromolecular Crowding Increase the Self-Assembly Efficiency of the Minute Virus of Mice Capsid In Vitro
by Miguel Angel Fuertes, Diego López Mateos, Luis Valiente, Alicia Rodríguez Huete, Alejandro Valbuena and Mauricio G. Mateu
Viruses 2023, 15(5), 1054; https://doi.org/10.3390/v15051054 - 25 Apr 2023
Cited by 2 | Viewed by 1560
Abstract
The hollow protein capsids from a number of different viruses are being considered for multiple biomedical or nanotechnological applications. In order to improve the applied potential of a given viral capsid as a nanocarrier or nanocontainer, specific conditions must be found for achieving [...] Read more.
The hollow protein capsids from a number of different viruses are being considered for multiple biomedical or nanotechnological applications. In order to improve the applied potential of a given viral capsid as a nanocarrier or nanocontainer, specific conditions must be found for achieving its faithful and efficient assembly in vitro. The small size, adequate physical properties and specialized biological functions of the capsids of parvoviruses such as the minute virus of mice (MVM) make them excellent choices as nanocarriers and nanocontainers. In this study we analyzed the effects of protein concentration, macromolecular crowding, temperature, pH, ionic strength, or a combination of some of those variables on the fidelity and efficiency of self-assembly of the MVM capsid in vitro. The results revealed that the in vitro reassembly of the MVM capsid is an efficient and faithful process. Under some conditions, up to ~40% of the starting virus capsids were reassembled in vitro as free, non aggregated, correctly assembled particles. These results open up the possibility of encapsidating different compounds in VP2-only capsids of MVM during its reassembly in vitro, and encourage the use of virus-like particles of MVM as nanocontainers. Full article
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Review

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23 pages, 3640 KiB  
Review
Rotavirus Particle Disassembly and Assembly In Vivo and In Vitro
by Dunia Asensio-Cob, Javier M. Rodríguez and Daniel Luque
Viruses 2023, 15(8), 1750; https://doi.org/10.3390/v15081750 - 16 Aug 2023
Cited by 9 | Viewed by 2814
Abstract
Rotaviruses (RVs) are non-enveloped multilayered dsRNA viruses that are major etiologic agents of diarrheal disease in humans and in the young in a large number of animal species. The viral particle is composed of three different protein layers that enclose the segmented dsRNA [...] Read more.
Rotaviruses (RVs) are non-enveloped multilayered dsRNA viruses that are major etiologic agents of diarrheal disease in humans and in the young in a large number of animal species. The viral particle is composed of three different protein layers that enclose the segmented dsRNA genome and the transcriptional complexes. Each layer defines a unique subparticle that is associated with a different phase of the replication cycle. Thus, while single- and double-layered particles are associated with the intracellular processes of selective packaging, genome replication, and transcription, the viral machinery necessary for entry is located in the third layer. This modular nature of its particle allows rotaviruses to control its replication cycle by the disassembly and assembly of its structural proteins. In this review, we examine the significant advances in structural, molecular, and cellular RV biology that have contributed during the last few years to illuminating the intricate details of the RV particle disassembly and assembly processes. Full article
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