alexa Sustained delivery of VEGF maintains innervation and promotes reperfusion in ischemic skeletal muscles via NGF GDNF signaling.
General Science

General Science

Journal of Biotechnology & Biomaterials

Author(s): Shvartsman D, StorrieWhite H, Lee K, Kearney C, Brudno Y,

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Abstract Tissue reinnervation following trauma, disease, or transplantation often presents a significant challenge. Here, we show that the delivery of vascular endothelial growth factor (VEGF) from alginate hydrogels ameliorates loss of skeletal muscle innervation after ischemic injury by promoting both maintenance and regrowth of damaged axons in mice. Nerve growth factor (NGF) and glial-derived neurotrophic factor (GDNF) mediated VEGF-induced axonal regeneration, and the expression of both is induced by VEGF presentation. Using both in vitro and in vivo modeling approaches, we demonstrate that the activity of NGF and GDNF regulates VEGF-driven angiogenesis, controlling endothelial cell sprouting and blood vessel maturation. Altogether, these studies produce evidence of new mechanisms of VEGF action, further broaden the understanding of the roles of NGF and GDNF in angiogenesis and axonal regeneration, and suggest approaches to improve axonal and ischemic tissue repair therapies.
This article was published in Mol Ther and referenced in Journal of Biotechnology & Biomaterials

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