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Genetic factor holds key to blood vessel health
Date:11/19/2012

Researchers at Case Western Reserve University School of Medicine have identified a genetic factor that prevents blockages from forming in blood vessels, a discovery that could lead to new therapies for cardiovascular diseases.

The findings are described in the Nov. 19 issue of the Journal of Clinical Investigation.

Researchers led by Mukesh K. Jain, MD, FAHA, professor of medicine, Ellery Sedgwick Jr. Chair and director of Case Cardiovascular Research Institute at Case Western Reserve School of Medicine, found that a shortage of the genetic factor KLF4, which regulates endothelial cells lining the interior of blood vessels, makes the lining more prone to the buildup of harmful plaque and fat deposits. In addition they showed that the deficiency of KLF4 also made the blood vessel more susceptible to clot formation. The plaque buildup (called atherosclerosis) narrows vessels and provides the foundation for clot formation (called thrombosis) that leads to heart attack and stroke.

Conversely, sufficient levels of KLF4, protect the inner lining of blood vessels, from toxins and other harmful agents that trigger the buildup of plaque and clot formation.

"This research answers a fundamental question in blood vessel health, identifying KLF4 as a master regulator of the most cardinal functions of endothelial cells," says Jain, who is also chief research officer of Harrington Heart & Vascular Institute at University Hospitals Case Medical Center.

"The fact that the level of these genetic factors can be altered in human disease suggests that targeting them may be a viable therapeutic strategy," Jain says.

The researchers are now developing tools to identify small molecules that increase KLF4 levels. Long-term, the goal is to identify a new class of molecules to develop a drug that works with those already used to treat heart disease. Another possibility is to modify existing drugs that can boost KLFs levels.
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Contact: Jessica Studeny
jessica.studeny@case.edu
216-224-3997
Case Western Reserve University
Source:Eurekalert

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