Rapid Production of Virus Protein Microarray Using Protein Microarray Fabrication through Gene Synthesis (PAGES)

Area of Science:

• Virology
• Immunology
• Biotechnology

Background:

• High genetic variability in RNA viruses complicates biomarker discovery, vaccine development, and immune response characterization.
• Protein microarrays are valuable for biomarker discovery and protein interaction studies but are limited by material requirements and complex procedures.
• Existing methods hinder the widespread application of protein microarrays in RNA virus research.

Purpose of the Study:

• To introduce a rapid and efficient method, protein microarray fabrication through gene synthesis (PAGES), for constructing protein microarrays specifically for RNA viruses.
• To demonstrate the utility of PAGES using dengue virus as a model.
• To enable the creation of complete proteomic microarrays for diverse RNA virus strains.

Main Methods:

• Identification of consensus sequences from a large number of dengue virus strains (3,604).
• Fabrication of complete proteomic microarrays tailored to each consensus sequence using the PAGES method.
• Testing the microarrays' ability to differentiate patient sera based on infection status (dengue virus, related pathogens, or uninfected).

Main Results:

• Successfully fabricated unique proteomic microarrays for dengue virus consensus sequences.
• Demonstrated the microarrays' capability to accurately distinguish between sera from dengue-infected patients, those with related infections, and healthy individuals.
• Developed a PAGES expression library for immediate use in dengue virus studies.

Conclusions:

• The PAGES method provides a rapid and efficient approach for protein microarray fabrication, overcoming previous limitations.
• The developed dengue virus proteomic microarrays are effective diagnostic tools.
• PAGES is anticipated to become a widely adopted method for the clinical characterization of RNA viruses.