Researchers Uncover RNA Switches That Regulate Gene Activity

A groundbreaking study led by the University of Groningen has revealed the existence of hundreds of shapeshifting RNA switches that regulate gene activity in both E. coli bacteria and human cells. The findings, published in Nature Biotechnology on July 25, 2025, could pave the way for novel therapeutic strategies targeting gene expression.

The research team, headed by molecular biologist Danny Incarnato and involving postdoctoral researcher Dr. Ivana Borovska, focused on how RNA molecules can adopt complex two-dimensional (2D) and three-dimensional (3D) structures. These structural changes enable RNA to function as an ON-OFF switch, modulating the binding of ribosomes and influencing protein synthesis.

Incarnato developed a method several years ago that maps the alternative shapes of RNA molecules in living cells. This innovative approach allowed the researchers to identify regions of RNA that can switch between different structures, each with distinct regulatory effects. “The ability of RNA to switch between alternative structures usually implies some sort of regulation, similar to an ON-OFF switch,” Incarnato explained.

Utilizing this technique, the team made significant strides in understanding the complexity of RNA structures. They also created a new tool that harnesses evolutionary information to accurately identify functional RNA structural switches. This tool enabled the team to discover hundreds of regulatory switches, including one that responds to temperature changes, aiding bacteria in managing cold stress.

Identifying such a significant number of RNA switches marks a crucial first step, according to Incarnato. “The next step is to find ways to influence their functioning,” he noted. This could involve designing small molecules that modulate these RNA switches, opening possibilities for innovative treatments for various diseases.

The research took over three years to complete and builds on six years of foundational work in detecting 2D RNA shapes. Incarnato remarked, “This is revolutionary, something the whole field has been seeking for years.” The implications of this study extend beyond basic scientific understanding, potentially leading to practical applications in medical treatment.

For further details, refer to the full study titled “Identification of conserved RNA regulatory switches in living cells using RNA secondary structure ensemble mapping and covariation analysis” published in Nature Biotechnology. This research not only enhances the understanding of RNA’s regulatory roles but also highlights the potential for manipulating these switches to improve human health.