Study sheds more light on ability of cancer drug to lower blood sugar | Health - Hindustan Times
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Study sheds more light on ability of cancer drug to lower blood sugar

ANI | | Posted by Krishna Priya Pallavi, Oklahoma
May 26, 2024 08:55 AM IST

The study highlights the intricacy of metabolic illnesses and is published in The Proceedings of the National Academy of Sciences (PNAS) magazine.

The efficacy of a medication to prevent liver fat accumulation--a condition that frequently coexists with obesity and can result in dangerous fatty liver disease--has been further explored by researchers at the University of Oklahoma. Their research, which highlights the intricacy of metabolic illnesses, is published in The Proceedings of the National Academy of Sciences (PNAS), the organization's peer-reviewed magazine.

The drug, known as MLN4924, works by preventing the degradation of a specific protein needed for all cells to respond to insulin. (Freepik)
The drug, known as MLN4924, works by preventing the degradation of a specific protein needed for all cells to respond to insulin. (Freepik)

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The publication builds on a previous discovery made by Tiangang Li, PhD, and a team of researchers at OU Health Harold Hamm Diabetes Center: A drug developed to suppress cancerous tumours can also improve insulin sensitivity and lower blood glucose (sugar) levels. The drug, known as MLN4924, works by preventing the degradation of a specific protein needed for all cells to respond to insulin. After the finding, Li earned a grant from the National Institutes of Health to continue his research.

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In the recently published study, conducted in mice, his research team eliminated a gene in the liver called Cul 3. When Cul 3 is present in the body, the drug inhibits it to prevent the degradation of the protein. Eliminating the gene provided a fuller understanding of what would happen when mice become obese on a high-fat diet.

His discovery was both anticipated and surprising. Without the gene, the mice eating a high-fat diet did not accumulate fat in their livers, despite being obese. However, the lack of fat build-up in the liver instead prompted fat to enter the bloodstream and into other tissues like muscle, where it's not supposed to be stored. As a result, the muscle - the largest organ in the body - had a poorer response to insulin, and the mice developed high blood sugar.

"By eliminating the gene, we aggressively prevented fat accumulation in the liver, but this actually worsened insulin resistance in the muscle, which tells us that fat metabolism in these organs is interconnected," Li said.

"These findings suggest that, in addition to lowering liver fat, the simultaneous reduction of obesity and improvement of insulin sensitivity are important for treating fatty liver disease. That's because these improvements outside the liver are critical for preventing the fat that enters the liver from also building up in other tissues."

The research also illustrates why treating chronic conditions like Type 2 diabetes and fatty liver disease is never simple - an improvement in one area may trigger negative effects in another. Even so, the study was extremely helpful for understanding the process by which fatty liver disease occurs and what the drug is doing in the context of that disease, said study co-author Jed Friedman, Ph.D., director of OU Health Harold Hamm Diabetes Center and a professor in the OU College of Medicine.

"We have some promising ideas going forward to target potential pathways to lower liver fat accumulation while also improving insulin sensitivity," Friedman said. "Drug repurposing like we're doing in this study is exciting because so much is already known about the drug and its safety. We believe it holds a lot of possibility."  

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This story has been published from a wire agency feed without modifications to the text.
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