Guest Column | July 20, 2026

Beyond Genetic Information: Could RNA Become The Next Generation Of Cellular Sensors?

By Savani Anbalagan, Ph.D., Principal Investigator, Adam Mickiewicz University

Therapeutic agents, nanotechnology-GettyImages-1300760616

For decades, RNA has largely been viewed through the lens of information transfer and gene regulation. Even as the field has expanded beyond messenger RNA to include long non-coding RNAs, microRNAs, circular RNAs, and engineered therapeutic RNAs, our understanding of RNA has remained rooted in its ability to store, process, and regulate biological information.

But what if RNA plays another, more dynamic role?

I recently explored a hypothesis that extends beyond RNA's traditional functions: RNA molecules themselves may serve as direct sensors of their cellular environment. Specifically, I propose that certain RNAs, or what I refer to as riboceptors, may respond directly to environmental cues such as temperature and gaseous signaling molecules, influencing cellular behavior without relying exclusively on protein-based sensing mechanisms.

This idea remains a hypothesis, and much work remains before it can be validated experimentally. Yet considering RNA as both an information carrier and an environmental sensor opens intriguing possibilities, not only for understanding fundamental biology, but also for inspiring the next generation of RNA therapeutics.

Learning From Nature’s Molecular Toolkit

Biology rarely evolves redundant systems without purpose. Cells continuously monitor their surroundings, responding to fluctuations in temperature, oxygen availability, nitric oxide, carbon dioxide, pH, nutrients, and countless other signals. Traditionally, proteins have occupied center stage in these sensing networks. RNA, however, already demonstrates that it can function as more than passive genetic material.

Bacterial riboswitches have long illustrated RNA's remarkable ability to recognize metabolites and regulate gene expression without intermediary proteins. More recently, researchers have uncovered increasingly sophisticated RNA structures that influence splicing, translation, localization, and RNA stability in response to cellular conditions.

These discoveries raise an important question: if RNA can recognize metabolites, could evolution have also equipped RNA molecules to detect physical or chemical properties of the cellular environment?

Rather than viewing this possibility as a departure from established RNA biology, I believe it represents a logical extension of what we are already learning about RNA structure and function.

Temperature As An RNA Signal

Temperature affects nearly every aspect of RNA biology. Changes in temperature alter RNA folding, secondary structure, intermolecular interactions, and accessibility to RNA-binding proteins. Cells routinely experience localized temperature fluctuations during inflammation, infection, fever, mitochondrial activity, and metabolic stress.

These changes are often viewed simply as factors influencing RNA behavior. But another possibility deserves consideration: what if certain RNAs have evolved specifically to sense temperature?

In my perspective on temperature-sensing riboceptors, I propose that RNA molecules may function as intrinsic thermosensors within individual cellular compartments. Rather than acting as passive substrates affected by temperature, these RNAs could actively translate thermal changes into regulatory signals.

Such mechanisms could complement well-established protein thermosensors while providing cells with an additional layer of localized regulation. If correct, this framework would expand our understanding of how cells coordinate gene expression under changing physiological conditions.

Could RNA Also Detect Gases?

A second extension of this concept involves gaseous signaling molecules. Nitric oxide, carbon monoxide, hydrogen sulfide, oxygen, and carbon dioxide all play essential roles in cellular physiology. Their concentrations fluctuate continuously during development, inflammation, hypoxia, cardiovascular disease, and cancer.

Current models primarily describe proteins as the molecules responsible for detecting these gases and initiating downstream signaling cascades. However, RNA molecules exist within the same intracellular environment and possess highly dynamic three-dimensional structures that respond to chemical interactions.

This raises another intriguing possibility: might certain RNA molecules directly recognize changes in gaseous molecules and alter their structure or regulatory activity accordingly?

If RNA-based gas sensing exists, it would represent an entirely new layer of post-transcriptional regulation — one capable of integrating environmental information directly into RNA-mediated control networks.

At present, this remains speculative. Yet scientific progress often begins by asking whether established assumptions have caused us to overlook alternative biological mechanisms.

Implications For RNA Therapeutics

For researchers developing RNA medicines, these concepts may eventually prove valuable even if the underlying biology differs from the specific hypotheses proposed today. One of the defining trends in RNA therapeutics is the movement toward increasingly programmable systems.

Early RNA medicines demonstrated that synthetic RNA could produce therapeutic proteins. Today's research is focused on improving delivery, stability, translation efficiency, immune modulation, and tissue specificity. Tomorrow's challenge may be enabling RNA therapeutics to respond intelligently to their biological environment.

Imagine engineered RNAs that activate only under inflammatory conditions. Or circular RNAs that increase protein production in response to localized hypoxia. Or therapeutic RNAs capable of altering their behavior according to metabolic state or tissue-specific physiological signals. These possibilities remain aspirational, but they illustrate how studying endogenous RNA regulation can inform future engineering strategies.

Nature often provides the blueprint before biotechnology refines the application.

From Static Molecules To Adaptive Therapeutics

One of the most exciting developments in synthetic biology is the shift away from static therapeutic systems toward adaptive ones. Researchers increasingly seek biological therapies capable of responding dynamically to disease rather than functioning continuously regardless of physiological context.

RNA is particularly well suited to this vision because its structure is inherently dynamic. Unlike DNA, whose primary role is stable information storage, RNA continuously folds, unfolds, interacts with proteins, binds small molecules, and responds to changes within the cellular environment.

If future research demonstrates that these structural changes can themselves serve sensing functions, RNA therapeutics may eventually incorporate similar adaptive behaviors. Rather than simply delivering instructions, engineered RNAs could become active participants in cellular decision-making.

Expanding The RNA Landscape

The RNA field has repeatedly demonstrated that long-held assumptions deserve reexamination. Non-coding RNAs were once dismissed as transcriptional noise before becoming recognized as central regulators of biology. Circular RNAs were initially considered splicing artifacts before emerging as promising therapeutic platforms.

RNA modifications were once viewed as biochemical curiosities before the field of epitranscriptomics transformed our understanding of post-transcriptional regulation. Whether riboceptors ultimately join this growing list remains to be seen.

The hypotheses presented here are intended not as definitive conclusions, but as an invitation to broaden the questions we ask about RNA biology. Could RNA participate directly in sensing temperature? Could RNA recognize gaseous signaling molecules? Could these mechanisms contribute to cellular homeostasis in ways that have yet to be appreciated?

Answering these questions will require careful experimentation across structural biology, biophysics, molecular biology, and RNA engineering.

Looking Ahead

Scientific progress depends on challenging existing frameworks while remaining grounded in rigorous experimentation. The idea that RNA functions as an environmental sensor is still in its infancy, but it reflects a broader shift occurring across RNA research. Increasingly, RNA is being recognized not simply as an intermediary between DNA and protein, but as an active, multifaceted regulator of cellular physiology.

For the RNA therapeutics community, this perspective offers more than an interesting biological question. It encourages us to think differently about what future RNA medicines might become. As we continue to engineer increasingly sophisticated RNA platforms, understanding how nature exploits RNA's structural flexibility may prove just as important as improving delivery systems or optimizing sequence design.

If RNA has evolved to do more than carry genetic information, the next generation of RNA therapeutics may ultimately learn from those same principles — creating medicines that do not simply function within the cellular environment but actively respond to it.

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About The Author

Savani Anbalagan, Ph.D., is a principal investigator in the Institute of Molecular Biology and Biotechnology at Adam Mickiewicz University in Poznań, Poland. His research explores fundamental mechanisms of cellular communication, with a particular focus on RNA biology, molecular sensing, neuroendocrinology, and the evolution of signaling systems. He has proposed several conceptual frameworks, including riboceptors and gasocrine signaling, that examine how RNA and other biomolecules may directly sense and respond to environmental cues. Anbalagan has also published in journals, including RNA Biology, Communications Biology, Developmental Cell, Cell Reports, iScience, and Journal of Neuroendocrinology.