RNAi Screening in Spodoptera frugiperda.

Area of Science:

• Molecular Biology
• Genetics
• Virology

Background:

• RNA interference (RNAi) is a powerful reverse genetic tool for functional genomics.
• RNAi is increasingly used to study viral pathogenesis mechanisms.
• Investigating RNAi and viral factors requires robust screening methods.

Purpose of the Study:

• To describe methods for executing successful RNA interference screening.
• To present a novel reversal of silencing assay for high-fidelity screening.
• To investigate RNAi and viral pathogenic factors in Spodoptera frugiperda cells.

Main Methods:

• Generation of transgenic reporter and RNAi sensor cell lines of Spodoptera frugiperda (Sf21).
• Development of a reversal of silencing assay using siRNA or shRNA guided screening.
• Application of the assay to investigate RNAi factors and viral pathogenic factors.

Main Results:

• Successful generation of Spodoptera frugiperda (Sf21) transgenic cell lines.
• Demonstration of a high-fidelity screening assay for RNAi and viral factors.
• Empirical approaches and conceptual understanding for successful RNAi screening were established.

Conclusions:

• The developed RNAi screening assay provides extraordinary fidelity.
• This methodology facilitates large-scale functional genomic studies in Spodoptera frugiperda.
• The approach is valuable for understanding viral pathogenesis and identifying key factors.