( The Bioengineering Researchers at UC Sa...)Research on Human Metabolic Disorders,Health

The Bioengineering Researchers at UC San Diego, reporting their proceedings on PNAS Journal’s website on January 29, have painstakingly assembled// a virtual human metabolic network that will give researchers a new way to hunt for better treatments for hundreds of human metabolic disorders, from diabetes to high levels of cholesterol in the blood.

This first-of-its-kind metabolic network builds on the sequencing of the human genome and contains more than 3,300 known human biochemical transformations that have been documented during 50 years of research worldwide.

In a report in the Proceedings of the National Academy of Sciences (PNAS), the UCSD researchers led by Bernhard ? Palsson, a professor of bioengineering in the Jacobs School of Engineering, unveiled the BiGG (biochemically, genetically, and genomically structured) database as the end product of this phase of the research project.

Each person's metabolism, which represents the conversion of food sources into energy and the assembly of molecules, is determined by genetics, environment, and nutrition. In a demonstration of the power and flexibility of the BiGG database, the UCSD researchers conducted 288 simulations, including the synthesis of testosterone and estrogen, as well as the metabolism of dietary fat. In every case, the behavior of the model matched the published performance of human cells in defined conditions.

Researchers can use the computationally based database to quickly discover the effects on a given cell type of changing the performance of any of the 3,300 known human metabolic reactions operating in that cell. The tool is designed to help scientists explore hundreds of human disorders in the metabolism of amino acids, carbohydrates, lipids, minerals, and other molecules. It also is intended to be used in the future to study metabolic variations between people as a way to individually tailor diet for weight control.

Studying the metabolism
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