Genome-Edited Cell Lines for High-Throughput Screening.

Area of Science:

• Molecular Biology
• Genetics
• Biotechnology

Background:

• High-throughput screening (HTS) relies on accurate gene expression measurement.
• Traditional reporter assays have limitations in capturing endogenous gene regulation.
• Copy number variations and gene modulation are key in disease phenotypes.

Purpose of the Study:

• To develop a generalizable genome editing method for creating improved gene expression reporter assays.
• To overcome limitations of traditional reporter constructs in HTS.
• To enhance the identification of biologically active molecules.

Main Methods:

• Utilized genome editing to insert reporters into the 3' untranslated region (UTR) of candidate genes.
• Employed dual, nonhomologous reporters to maximize screening efficiency.
• Applied the method to study the Pmp22 gene in Charcot-Marie-Tooth disease.

Main Results:

• Successfully established a genome editing-based reporter assay for gene expression studies.
• Demonstrated the method's applicability in a disease model (Charcot-Marie-Tooth).
• The dual-reporter system enhances the identification of molecules with concordant responses.

Conclusions:

• Genome editing offers a superior approach for creating physiologically relevant gene expression reporters.
• This method provides a robust platform for high-throughput screening and drug discovery.
• The developed reporter assay design is adaptable to various cell types and genes.