Protocol for multiplexed transcription factor activity detection using optimized barcoded reporters and an automated...

Area of Science:

• Molecular Biology
• Genomics
• Cell Signaling

Background:

• Transcription factors (TFs) are key regulators of cellular responses to signaling pathways.
• Understanding TF activity is essential for mapping cellular regulatory networks.
• Current methods for TF activity detection can be limited in throughput and quantitative accuracy.

Purpose of the Study:

• To develop a novel protocol for multiplexed detection of transcription factor activity.
• To enable high-throughput and quantitative profiling of TF activity in cultured cells.
• To provide a method for deciphering complex cellular regulatory networks.

Main Methods:

• Utilized a barcoded plasmid library of optimized "prime" TF reporters for transfection into cultured cells.
• Developed a protocol for RNA processing and barcode sequencing to quantify reporter activity.
• Implemented a computational pipeline for analyzing differential TF activity from sequencing data.

Main Results:

• Successfully established a method for multiplexed TF activity detection.
• Demonstrated the capability for high-throughput and quantitative TF profiling.
• Enabled the analysis of differential TF activity in response to cellular signals.

Conclusions:

• The presented protocol offers a powerful tool for dissecting TF-mediated gene regulation.
• This method facilitates a deeper understanding of cellular signaling and regulatory networks.
• The approach allows for comprehensive and quantitative assessment of TF activities.