An analysis of 33 human proteins involved in converting carbohydrates into fuel found 830 interactions with metabolites.

Werediscovering how nature has evolved to drug its own proteins and pathways, saysJared Rutter, Ph.D., distinguished professor in the Department of Biochemistry at University of Utah and the studys corresponding author.By following natures lead, were learning how to make better therapeutics.

These findingsand the technology that made them possiblehas become the basis for the biotechnology companyAtavistik Bio, co-founded by Rutter. The company is leveraging this new understanding to accelerate drug discovery for metabolic diseases and cancer.

At a more fundamental level, Rutter says, the advance deepens knowledge about how cells and our bodies work.

A New Frontier

The network described in the study represents an underappreciated layer of regulation in cells that comes from an unexpected source. For nearly 20 years, Rutters lab has researched metabolism, the chemical reactions that produce energy and build essential components to keep cells running smoothly. Their new research finds that intermediate products of those chemical reactions are more than passive building blocks and sources of fuel for cells, as had long been thought.

Instead, these intermediate products, along with other metabolites, make up an expansive web of sentries that monitor the environment and prompt cells to adapt when needed. They do this by interacting with proteins and modifying how they work. Does a big meal pump too many carbs in the body? Or too much fat? Like a railroad switch that guides a train onto a new track, these protein-metabolite interactions shift metabolic operations to break down those nutrients and steady the course.

The studys first author Kevin Hicks, Ph.D., developed a new technology, termed MIDAS, that reveals the enormity of the regulatory network that acts as an interface between environmental cues and cell metabolism, called the protein-metabolite interactome. The highly sensitive technique identified interactions that had never been seen. An analysis of 33 human proteins involved in converting carbohydrates into fuel found 830 interactions with metabolites. Given that there are thousands of proteins in the cell, the full scale of the network is predicted to be much larger.

Its surprising how little we knowabout the extent of these interactions, Hicks says. We are pushing our understanding of the biological

network in new directions.

Metabolic processes that become derailed can lead to illness and disease. Rutter and Hicks say that shedding light on additional interactions in the network will lead to a better understanding of root causes of diseasesand the development of new therapeutic approaches for getting things back on track.

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Biological network helps body adapt to stresses on health - Utah Business