Laminin heparin-binding peptides bind to several growth factors and enhance diabetic wound healing.

Laminin heparin-binding peptides bind to several growth factors and enhance diabetic wound healing.
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DOI:
10.1038/s41467-018-04525-w
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发表时间:
2018-06-04
影响因子:
16.6
通讯作者:
Hubbell JA
Hubbell JA
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Ishihara J;Ishihara A;Fukunaga K;Sasaki K;White MJV;Briquez PS;Hubbell JA

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Laminin, as a key component of the basement membrane extracellular matrix (ECM), regulates tissue morphogenesis. Here, we show that multiple laminin isoforms promiscuously bind to growth factors (GFs) with high affinity, through their heparin-binding domains (HBDs) located in the α chain laminin-type G (LG) domains. These domains also bind to syndecan cell-surface receptors, promoting attachment of fibroblasts and endothelial cells. We explore the application of these multifunctional laminin HBDs in wound healing in the type-2 diabetic mouse. We demonstrate that covalent incorporation of laminin HBDs into fibrin matrices improves retention of GFs and significantly enhances the efficacy of vascular endothelial cell growth factor (VEGF-A165) and platelet-derived growth factor (PDGF-BB) in promoting wound healing in vivo, under conditions where the GFs alone in fibrin are inefficacious. This laminin HBD peptide may be clinically useful by improving biomaterial matrices as both GF reservoirs and cell scaffolds, leading to effective tissue regeneration. Laminins are important regulators of epidermal wound healing. Here, the authors show that laminins bind to multiple growth factors via their heparin-binding domains, and that incorporation of these domains into fibrin matrices increases growth factor retention, promoting wound healing in type 2 diabetic mouse models.
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