POSTECH Researchers Develop RNA-Based Smart Gene Circuit

Researchers at Pohang University of Science and Technology (POSTECH) have developed an RNA-based smart gene circuit platform that allows cells to process multiple signals ^[1].

This advancement enables cells to function as computational units, potentially transforming how scientists approach synthetic biology and targeted cellular responses. By allowing a cell to make autonomous decisions based on internal data, the technology moves beyond simple one-to-one triggers.

The platform utilizes the ribosome—the cellular machinery typically responsible for protein synthesis—to act as a molecular switch ^[2]. This modification allows the system to simultaneously read six signals ^[1] and trigger specific, programmed responses based on the combination of those inputs.

"A research team at POSTECH (Pohang University of Science and Technology) has developed a new 'RNA-based smart gene circuit' platform," a researcher said ^[1]. The system is designed to read signals inside a cell, process that information, and generate a response without external intervention.

By repurposing existing cellular machinery, the team has created a framework where cells can effectively perform logic operations. "The molecular machinery that normally builds proteins inside cells has now taken on a new role as a 'switch,'" a researcher said ^[2].

This capability allows for a higher level of precision in cellular engineering. Rather than responding to a single stimulus, the cells can now integrate multiple data points to decide whether to activate a specific gene or protein. According to the researchers, this allows cells themselves to function as "living compute" ^[2].