Discovery opens the door to a potential ‘molecular fountain of youth’

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Discovery opens the door to a potential ‘molecular fountain of youth’


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Old 02-01-2013, 11:06   #1
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Default Discovery opens the door to a potential ‘molecular fountain of youth’

Discovery opens the door to a potential ‘molecular fountain of youth’


A new study led by researchers at the University of California, Berkeley, represents a major advance in the understanding of the molecular mechanisms behind aging while providing new hope for the development of targeted treatments for age-related degenerative diseases.

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The biologists found that SIRT3, one among a class of proteins known as sirtuins, plays an important role in helping aged blood stem cells cope with stress. When they infused the blood stem cells of old mice with SIRT3, the treatment boosted the formation of new blood cells, evidence of a reversal in the age-related decline in the old stem cells’ function.

“We already know that sirtuins regulate aging, but our study is really the first one demonstrating that sirtuins can reverse aging-associated degeneration, and I think that’s very exciting,” said study principal investigator Danica Chen, UC Berkeley assistant professor of nutritional science and toxicology. “This opens the door to potential treatments for age-related degenerative diseases.”

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"Other researchers have demonstrated that SIRT3 acts as a tumor suppressor," said Brown. "This is promising because, ideally, one would want a rejuvenative therapy where you could increase a protein's expression without increasing the risk of diseases like cancer."

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