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Updated: Jul 3, 2026
09:06
Assessment of Acute Wound Healing using the Dorsal Subcutaneous Polyvinyl Alcohol Sponge Implantation and Excisional Tail Skin Wound Models.
Published on: March 25, 2020
Angiogenic laminin-derived peptides stimulate wound healing
Katherine M Malinda1, Annette B Wysocki, Jennifer E Koblinski
1Review Branch DERA, NHLBI, NIH, Bethesda, MD 20892-1857, USA.
Summary
Specific laminin-111 peptides, A13 and C16, significantly accelerated wound healing in rats by promoting re-epithelialization and contraction. These angiogenic peptides also enhanced fibroblast migration and reduced matrix metalloproteinase 2, suggesting therapeutic potential.
Area of Science:
- Biochemistry
- Cell Biology
- Regenerative Medicine
Background:
- Angiogenic peptides accelerate wound healing.
- Laminin-111 is a key component of the extracellular matrix involved in cell adhesion and migration.
Purpose of the Study:
- To evaluate the wound healing potential of two specific laminin-111 derived peptides, A13 and C16, in a rat full-thickness wound model.
- To investigate the effects of these peptides on fibroblast migration and matrix metalloproteinase activity.
Main Methods:
- Administration of peptides A13 and C16 to full-thickness wounds in rats.
- Assessment of wound re-epithelialization and contraction at days 4 and 7.
- In vitro Boyden chamber assays to measure fibroblast migration.
- Analysis of matrix metalloproteinase 2 (MMP-2) expression in fibroblasts.
Main Results:
- Peptide A13 increased re-epithelialization by 17% and contraction by 11% at day 4.
- Peptide C16 increased re-epithelialization by 11% and contraction by 8% at day 4.
- Both peptides significantly enhanced fibroblast migration on uncoated and collagen IV-coated filters.
- A13 and C16 reduced pro- and active MMP-2 expression in fibroblasts.
Conclusions:
- Small bioactive angiogenic peptides, A13 and C16, derived from laminin-111, effectively promote dermal wound healing.
- These peptides stimulate key cellular processes including re-epithelialization, wound contraction, and fibroblast migration.
- The observed reduction in MMP-2 suggests a role in collagen accumulation, supporting their therapeutic potential for wound healing.
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