Differential effects of rat ADSCs encapsulation in fibrin matrix and combination delivery of BDNF and Gold nanoparticles on peripheral nerve regeneration

• Published in: BMC neuroscience 2021-08, Vol.22 (1), p.50-50, Article 50
• Main Authors: Razavi, Shahnaz, Jahromi, Maliheh, Vatankhah, Elham, Seyedebrahimi, Reihaneh
• Format: Article
• Language: English
• Subjects: Adipose derived stem cells; Animals; Biocompatibility; Brain-derived neurotrophic factor; Brain-Derived Neurotrophic Factor - administration & dosage; Care and treatment; Cell adhesion & migration; Cell migration; Cell proliferation; Chitosan; Coatings; Combined Modality Therapy; Diagnosis; Drug Delivery Systems - methods; Drug Therapy, Combination; Extracellular matrix; Fibrin; Fibrin - administration & dosage; Fibrin matrix; Glycolic acid; Gold; Gold - administration & dosage; Gold nanoparticles; Growth factors; Health aspects; Immunohistochemistry; Laminin; Male; Mesenchymal Stem Cells; Metal Nanoparticles - administration & dosage; Morphology; Nanoparticles; Nerve Regeneration - drug effects; Nerve Regeneration - physiology; Nervous system; Neurotrophic factors; Peripheral nerve diseases; Peripheral nerves; Physiological aspects; Polylactide-co-glycolide; Polymerase chain reaction; Psychological aspects; Rats; Rats, Wistar; Recovery of function; Regeneration; Sciatic nerve; Sciatic nerve regeneration; Sciatic Neuropathy - pathology; Sciatic Neuropathy - physiopathology; Sciatic Neuropathy - therapy; Stem cell transplantation; Stem cells; Surgery; Tissue engineering
• ISSN: 1471-2202; 1471-2202
• DOI: 10.1186/s12868-021-00655-y

Fibrin as an extracellular matrix feature like biocompatibility, creates a favorable environment for proliferation and migration of cells and it can act as a reservoir for storage and release of growth factors in tissue engineering. In this study, the inner surface of electrospun poly (lactic-co-glycolic acid) (PLGA) nanofibrous conduit was biofunctionalized with laminin containing brain derived neurotrophic factor (BDNF) and gold nanoparticles in chitosan nanoparticle. The rats were randomly divided into five groups, including autograft group as the positive control, PLGA conduit coated by laminin and filled with DMEM/F12, PLGA conduit coated by laminin and filled with rat-adipose derived stem cells (r-ADSCs), PLGA conduit coated by laminin containing gold-chitosan nanoparticles (AuNPs-CNPs), BDNF-chitosan nanoparticles (BDNF-CNPs) and filled with r-ADSCs or filled with r-ADSCs suspended in fibrin matrix, and they were implanted into a 10 mm rat sciatic nerve gap. Eventually, axonal regeneration and functional recovery were assessed after 12 weeks. After 3 months post-surgery period, the results showed that in the PLGA conduit filled with r-ADSCs without fibrin matrix group, positive effects were obtained as compared to other implanted groups by increasing the sciatic functional index significantly (p