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Chronic Would Healing Faster With Growth-Factor-Containing Nanoparticles

by Tanya Thomas on January 29, 2011 at 12:31 PM
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 Chronic Would Healing Faster With Growth-Factor-Containing Nanoparticles

Scientists at the Massachusetts General Hospital (MGH) have developed a novel system for delivery of growth factors to chronic wounds such as pressure sores and diabetic foot ulcers.

The investigators fused fabricating nanospheres containing keratinocyte growth factor (KGF), a protein known to play an important role in wound healing, with elastin-like peptides.

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The authors describe developing the fusion protein from recombinant KGF and elastin-like-peptides, which are major constituents of skin and other connective tissues.

Laboratory experiments showed that the fusion protein retained the wound-healing properties of both elastin and KGF and that it rapidly and efficiently self-assembled into nanoparticles in response to a simple increase in temperature.
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When applied to deep skin wounds in genetically diabetic mice, the nanoparticles accelerated healing by stimulating the formation of both surface epithelial tissue and thick fibrous connective tissue.

"It is quite amazing how just one dose of the fusion protein was enough to induce significant tissue regeneration in two weeks" says the paper's lead author Piyush Koria.

The study has been published in the Jan. 18 Proceedings of the National Academy of Sciences.

Source: ANI
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