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Researchers develop new tool for gene delivery
Date:1/27/2010

d member of Kumar-Singh's lab.

"What makes PEG-POD especially promising is that it will likely have applications beyond the retina. Because PEG-POD protects DNA from damage in the bloodstream, it may pave the way for gene therapy treatments that can be administered through an IV and directed to many other parts of the body," said Kumar-Singh.

Kumar-Singh and colleagues used an in vivo model to compare the effectiveness of PEG-POD with two other carriers (PEG-TAT and PEG-CK30) and a control (injections of DNA alone).

"Gene expression in specimens injected with PEG-POD was 215 times greater than the control. While all three carriers delivered DNA to the retinal cells, PEG-POD was by far the most effective," said first author Sarah Parker Read, an MD/PhD candidate at TUSM and Sackler and member of Kumar-Singh's lab.

Age-related macular degeneration, which results in a loss of sharp, central vision, is the number one cause of vision loss in Americans age 60 and older. Retinitis pigmentosa, an inherited condition resulting in retinal damage, affects approximately 1 in 4,000 individuals in the United States.


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Contact: Siobhan Gallagher
617-636-6586
Tufts University, Health Sciences
Source:Eurekalert

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