Bifunctional Peptide that Anneals to Damaged Collagen and Clusters TGF-β Receptors Enhances Wound HealingClick to copy article linkArticle link copied!
- Sayani ChattopadhyaySayani ChattopadhyayDepartment of Chemistry, University of Wisconsin−Madison, Madison, Wisconsin 53706, United StatesMore by Sayani Chattopadhyay
- Leandro B. C. TeixeiraLeandro B. C. TeixeiraDepartment of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin−Madison, Madison, Wisconsin 53706, United StatesMore by Leandro B. C. Teixeira
- Laura L. KiesslingLaura L. KiesslingDepartment of Chemistry, University of Wisconsin−Madison, Madison, Wisconsin 53706, United StatesDepartment of Biochemistry, University of Wisconsin−Madison, Madison, Wisconsin 53706, United StatesDepartment of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United StatesMore by Laura L. Kiessling
- Jonathan F. McAnultyJonathan F. McAnultyDepartment of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin−Madison, Madison, Wisconsin 53706, United StatesMore by Jonathan F. McAnulty
- Ronald T. Raines*Ronald T. Raines*Email: [email protected]Department of Chemistry, University of Wisconsin−Madison, Madison, Wisconsin 53706, United StatesDepartment of Biochemistry, University of Wisconsin−Madison, Madison, Wisconsin 53706, United StatesDepartment of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United StatesMore by Ronald T. Raines
Abstract

Transforming growth factor-β (TGF-β) plays important roles in wound healing. The activity of TGF-β is initiated upon the binding of the growth factor to the extracellular domains of its receptors. We sought to facilitate the activation by clustering these extracellular domains. To do so, we used a known peptide that binds to TGF-β receptors without diminishing their affinity for TGF-β. We conjugated this peptide to a collagen-mimetic peptide that can anneal to the damaged collagen in a wound bed. We find that the conjugate enhances collagen deposition and wound closure in mice in a manner consistent with the clustering of TGF-β receptors. This strategy provides a means to upregulate the TGF-β signaling pathway without adding exogenous TGF-β and could inspire means to treat severe wounds.
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