BOSTON (December 7, 2010) Newly-created bioactive peptides promote wound healing through the growth of new blood vessels and epithelial tissue, such as skin. These wound-healing peptides, synthesized by researchers at the Tufts Center for Innovations in Wound Healing Research, increased angiogenesis in vitro by 200 percent. The discovery, reported online in advance of print this week in Wound Repair and Regeneration, provides a better understanding of the mechanisms regulating wound healing and may lead to new therapies for acute and chronic wound healing.
"We identified specific bioactive peptides that are produced from collagenase treatment of extracellular matrix, which stimulate the healing process within a wound. By creating combinations of several key peptide fragments, we were able to synthesize an entirely novel class of wound-healing peptides that promote the fundamental response to injury: blood vessel formation and epithelialization," said senior author Ira Herman, PhD, a professor of molecular physiology and pharmacology at TUSM; member of the cell, molecular & developmental biology, and cellular & molecular physiology program faculties at the Sackler School of Graduate Biomedical Sciences; and director, Tufts Center for Innovations in Wound Healing Research.
"This is the first time these peptides have been identified and synthesized and we hope that these discoveries and new technologies will have broad implications for acute, chronic, burn, and scarless wound healing," Herman continued.
The team from Tufts used a three-dimensional wound model to examine the effect of the bioactive peptides on wound healing. After three days, wounds treated with the peptides showed signs of robust repair, while controls did not.
"We found that collagenase enzyme derived from Clostridium histolyticum bacteria releases biologically active fragments peptides from extracellular mammalian proteins. These peptides stimulate
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Tufts University, Health Sciences