Directing cellular information flow via CRISPR signal conductors

Area of Science:

• Synthetic biology
• Molecular biology
• Gene regulation

Background:

• Eukaryotic cell phenotypes rely on complex signaling pathways.
• Developing synthetic biology devices for signal processing remains challenging.
• Existing methods for artificial signaling lack efficiency and control.

Purpose of the Study:

• To engineer synthetic devices for sensing, processing, and controlling biological signals.
• To create CRISPR-Cas9-based "signal conductors" for gene regulation.
• To enable the construction of Boolean logic gates and rewiring of cellular signaling pathways.

Main Methods:

• Modified sgRNAs incorporating riboswitches to detect specific signals.
• CRISPR-Cas9 system for regulating endogenous gene transcription.
• Design and implementation of synthetic genetic circuits for signal processing.

Main Results:

• Successfully created CRISPR-Cas9-based "signal conductors" for gene regulation.
• Demonstrated the construction of all basic Boolean logic gates in mammalian cells.
• Showcased the ability to rewire cellular signaling and redirect oncogenic pathways.
• Enabled simultaneous bidirectional gene transcription control for cell fate reprogramming.

Conclusions:

• CRISPR-Cas9 "signal conductors" offer a novel platform for synthetic biology applications.
• This technology facilitates the creation of complex logic operations and pathway manipulation.
• The approach holds potential for reprogramming cancer cell fate through targeted signal transduction control.