How Computational Epitope Mapping Identifies the Interactions between Nanoparticles Derived from Papaya Mosaic Virus Capsid Proteins and Immune System

Author(s): Mahbobeh Zamani-Babgohari, Kathleen L. Hefferon*, Tsu Huang, Mounir G. AbouHaidar.

Journal Name: Current Genomics

Volume 20 , Issue 3 , 2019

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Abstract:

Background: Nanoparticles derived from plant viruses possess fascinating structures, versatile functions and safe properties, rendering them valuable for a variety of applications. Papaya mosaic Virus-Like Particles (VLPs) are nanoparticles that contain a repetitive number of virus capsid proteins (PMV-CP) and are considered to be promising platforms for vaccine design. Previous studies have reported the antigenicity of PMV nanoparticles in mammalian systems.

Materials and Methods: As experiments that concern vaccine development require careful design and can be time consuming, computational experiments are of particular importance. Therefore, prior to expressing PMV-CP in E. coli and producing nanoparticles, we performed an in silico analysis of the virus particles using software programs based on a series of sophisticated algorithms and modeling networks as useful tools for vaccine design. A computational study of PMV-CP in the context of the immune system reaction allowed us to clarify particle structure and other unknown features prior to their introduction in vitro.

Results: The results illustrated that the produced nanoparticles can trigger an immune response in the absence of fusion with any foreign antigen.

Conclusion: Based on the in silico analyses, the empty capsid protein was determined to be recognised by different B and T cells, as well as cells which carry MHC epitopes.

Keywords: PMV-CP, virus nanoparticles, antigenic epitopes, immune response, vaccine design, in silico analysis.

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Article Details

VOLUME: 20
ISSUE: 3
Year: 2019
Page: [214 - 225]
Pages: 12
DOI: 10.2174/1389202920666190527080230
Price: $58

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