Hyaluronic acid hydrogels with IKVAV peptides for tissue repair and axonal regeneration in an injured rat brain.
A biocompatible hydrogel of hyaluronic acid with the neurite-promoting peptide sequence of IKVAV was synthesized. The characterization of the hydrogel shows an open porous structure and a large surface area available for cell interaction. Its ability to promote tissue repair and axonal regeneration in the lesioned rat cerebrum is also evaluated. After implantation, the polymer hydrogel repaired the tissue defect and formed a permissive interface with the host tissue. Axonal growth occurred within the microstructure of the network. Within 6 weeks the polymer implant was invaded by host-derived tissue, glial cells, blood vessels and axons. Such a hydrogel matrix showed the properties of neuron conduction. It has the potential to repair tissue defects in the central nervous system by promoting the formation of a tissue matrix and axonal growth by replacing the lost tissue.
Wei
Y T
YT
Biomaterials Laboratory, Department of Materials Science & Engineering, Tsinghua University, Beijing, 100084, People's Republic of China.
Tian
W M
WM
Yu
X
X
Cui
F Z
FZ
Hou
S P
SP
Xu
Q Y
QY
Lee
In-Seop
IS
D000818:Animals; D001369:Axons / Q000473:pathology* / Q000502:physiology; D001930:Brain Injuries / Q000473:pathology* / Q000628:therapy*; D048091:Guided Tissue Regeneration / Q000379:methods*; D006820:Hyaluronic Acid / Q000737:chemistry / Q000627:therapeutic use*; D020100:Hydrogels / Q000737:chemistry / Q000627:therapeutic use; D007797:Laminin / Q000737:chemistry / Q000627:therapeutic use*; D008422:Materials Testing; D009416:Nerve Regeneration / Q000502:physiology*; D010446:Peptide Fragments / Q000737:chemistry / Q000627:therapeutic use*; D051381:Rats; D017207:Rats, Sprague-Dawley; D016896:Treatment Outcome
D020100:Hydrogels; D007797:Laminin; D010446:Peptide Fragments; C083321:isoleucyl-lysyl-valyl-alanyl-valine; D006820:Hyaluronic Acid