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Biohybrids of scaffolding hyaluronic acid biomaterials plus adipose stem cells home local neural stem and endothelial cells: Implications for reconstruction of brain lesions after stroke
Author(s) -
SanchezRojas Leyre,
GómezPinedo Ulises,
BenitoMartin María Soledad,
LeónEspinosa Gonzalo,
RascónRamirez Fernando,
Lendinez Cristina,
MartínezRamos Cristina,
MatíasGuiu Jorge,
Pradas Manuel Monleón,
Barcia Juan A.
Publication year - 2019
Publication title -
journal of biomedical materials research part b: applied biomaterials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.665
H-Index - 108
eISSN - 1552-4981
pISSN - 1552-4973
DOI - 10.1002/jbm.b.34252
Subject(s) - subventricular zone , neurogenesis , stem cell , adipose tissue , neural stem cell , hyaluronic acid , materials science , stroke (engine) , neurosphere , neuroblast , biomedical engineering , endothelial stem cell , pathology , microbiology and biotechnology , biology , anatomy , medicine , adult stem cell , endocrinology , biochemistry , mechanical engineering , engineering , in vitro
Endogenous neurogenesis in stroke is insufficient to replace the lost brain tissue, largely due to the lack of a proper biological structure to let new cells dwell in the damaged area. We hypothesized that scaffolds made of hyaluronic acid (HA) biomaterials (BM) could provide a suitable environment to home not only new neurons, but also vessels, glia and neurofilaments. Further, the addition of exogenous cells, such as adipose stem cells (ASC) could increase this effect. Athymic mice were randomly assigned to a one of four group: stroke alone, stroke and implantation of BM, stroke and implantation of BM with ASC, and sham operated animals. Stroke model consisted of middle cerebral artery thrombosis with FeCl 3 . After 30 days, animals underwent magnetic resonance imaging (MRI) and were sacrificed. Proliferation and neurogenesis increased at the subventricular zone ipsilateral to the ventricle and neuroblasts, glial, and endothelial cells forming capillaries were seen inside the BM. Those effects increased when ASC were added, while there was less inflammatory reaction. Three‐dimensional scaffolds made of HA are able to home newly formed neurons, glia, and endothelial cells permitting the growth neurofilaments inside them. The addition of ASC increase these effects and decrease the inflammatory reaction to the implant. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 107B: 1598–1606, 2019.