Navigation Links
Growth-factor-containing nanoparticles accelerate healing of chronic wounds
Date:1/26/2011

Massachusetts General Hospital (MGH) investigators have developed a novel system for delivery of growth factors to chronic wounds such as pressure sores and diabetic foot ulcers. In their work published in the Jan. 18 Proceedings of the National Academy of Sciences, the team from the MGH Center for Engineering in Medicine (CEM) reports fabricating nanospheres containing keratinocyte growth factor (KGF), a protein known to play an important role in wound healing, fused with elastin-like peptides. When suspended in a fibrin gel, these nanoparticles improved the healing of deep skin wounds in diabetic mice.

"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, PhD, formerly a postdoctoral fellow at the MGH-CEM and now at the University of South Florida. "Previous reports have suggested that KGF can help heal chronic wounds. But in most studies the growth factor was applied to the surface of the wound, limiting its availability to deeper tissues and requiring repeat applications to produce any clinical benefit. Using large quantities of growth factor would make this therapy extremely expensive. Our work circumvents these limitations by more efficiently delivering KFG throughout the wound to stimulate tissue regeneration."

The authors describe developing a 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. 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.

"This technology has great potential because the fusion protein can be easily manufactured at a relatively low cost, is easy to administer and does not disappear as readily as the growth factor alone," explains Martin Yarmush, MD, PhD, director of the MGH Center for Engineering in Medicine and senior author of the study. "The technology also provides a platform for delivery of any growth factor or combination of factors. One could imagine administering a mixture of nanoparticles, each with a different factor, or a single set of nanoparticles with a mixture of fusion proteins on each."


'/>"/>

Contact: Sue McGreevey
smcgreevey@partners.org
617-724-2764
Massachusetts General Hospital
Source:Eurekalert

Related biology news :

1. With chemical modification, stable RNA nanoparticles go 3-D
2. Cinnamon can replace harmful chemicals used to create nanoparticles
3. Drugs encased in nanoparticles travel to tumors on the surface of immune-system cells
4. Probing the nanoparticle: Predicting how nanoparticles will react in the human body
5. How many nanoparticles heat the tumor?
6. NIST nanofluidic multi-tool separates and sizes nanoparticles
7. New catalyst of platinum nanoparticles could lead to conk-out free, stable fuel cells
8. Nanoblasts from laser-activated nanoparticles move molecules, proteins and DNA into cells
9. Researchers use nanoparticles as destructive beacons to zap tumors
10. K-State researchers find gene-silencing nanoparticles may put end to pesky summer pest
11. Researchers use nanoparticles to shrink tumors in mice
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/13/2017)... April 13, 2017 UBM,s Advanced Design and ... will feature emerging and evolving technology through its 3D ... will run alongside the expo portion of the event ... and demonstrations focused on trending topics within 3D printing ... and manufacturing event will take place June 13-15, 2017 at ...
(Date:4/11/2017)... PALM BEACH GARDENS, Fla. , April 11, ... biometric identity management and secure authentication solutions, today ... million contract by Intelligence Advanced Research Projects Activity ... technologies for IARPA,s Thor program. "Innovation ... the onset and IARPA,s Thor program will allow ...
(Date:4/11/2017)... BROOKLYN, N.Y. , April 11, 2017 /PRNewswire-USNewswire/ ... identical fingerprints, but researchers at the New York ... University College of Engineering have found that partial ... fingerprint-based security systems used in mobile phones and ... previously thought. The vulnerability lies in ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... ... ... wash is a basic first aid supply for any work environment, but most personal eye ... first if a dangerous substance enters both eyes? It’s one less decision, and likely quicker ... eye piece. , “Whether its dirt and debris, or an acid or alkali, getting anything ...
(Date:10/11/2017)... ... 11, 2017 , ... Disappearing forests and increased emissions are the main causes ... each year. Especially those living in larger cities are affected by air pollution related ... the most pollution-affected countries globally - decided to take action. , “I knew I ...
(Date:10/10/2017)... Philadelphia, PA (PRWEB) , ... October 10, 2017 ... ... University City Science Center’s FirstHand program has won a US2020 STEM Mentoring Award. ... accept the award for Excellence in Volunteer Experience from US2020. , US2020’s mission ...
(Date:10/10/2017)... , ... October 10, 2017 , ... ... of 13 prestigious awards honoring scientists who have made outstanding ... a scheduled symposium during Pittcon 2018, the world’s leading conference and exposition for ...
Breaking Biology Technology: