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Scripps Research scientists create new genetic model of premature aging diseases
Date:4/29/2011

JUPITER, FL, April 28, 2011 Working with a group of national and international researchers, scientists from the Florida campus of The Scripps Research Institute have developed a new genetic model of premature aging disorders that could shed light on these rare conditions in humans and provide a novel platform for large-scale screening of compounds to combat these and other age-related diseases.

In the new study, which was published this month in the open-access publication PLoS ONE, the scientists found a way to use zebrafish (Danio rerio) to model two rare human genetic disorders: Hutchinson-Gilford Progeria Syndrome and laminopathies.

"This is a robust model system of human aging that corresponds directly to the human genes involved in these diseases," said Scripps Florida Assistant Professor Shuji Kishi, who led the study. "This model is ready now and can be used to screen and develop chemical compounds to treat these and other age-related diseases."

Kishi noted that zebrafish, which display an array of signs of aging resembling those in humans, have emerged over the past decade as a powerful system to study diseases associated with aging and development.

Hutchinson-Gilford Progeria Syndrome is a rare disease that causes symptoms of advanced aging such as cardiovascular problems, hair loss, and distressed skin in young children. The laminopathies are a cluster of at least 13 different genetic disorders, whose symptoms range from muscular dystrophy to premature aging. They are grouped together because they are all caused by mutations in the genes that encode proteins of the nuclear membrane, the double-hulled envelope that surrounds the cell nucleus.

The gene associated with both progeria and laminopathies is the lamin A gene (LMNA), which presumably is also involved in the normal process of human aging, although the underlying mechanisms of the process are still relatively unknown.

In the new re
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Contact: Mika Ono
mikaono@scripps.edu
858-784-2052
Scripps Research Institute
Source:Eurekalert

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