title: Effect of nano-hydroxyapatite-coated magnetic nanoparticles on axonal guidance growth of rat dorsal root ganglion neurons.
abstract: Proper extracellular substrate can stimulate neural regeneration in nerve tissue engineering, including magnetic nanoparticles (iron oxide nanoparticles, Fe3 O4 ), but they are always neurotoxic, with low saturation magnetization and so on. These nanomaterials cannot be used to stimulate the growth and elongation of axons. Therefore, this work attempts to overcome these deficiencies. Nano-hydroxyapatite (n-HA) coated magnetic nanoparticles were using an ultrasound-assisted co-precipitation method. X-ray diffraction and transmission electron microscopy were used to characterize the structure and chemical composition of the produced samples. These synthesized nanomaterials were added into the primary cultured dorsal root ganglion (DRG) neurons; our results showed that n-HA-coated magnetic nanoparticles (Fe3 O4 +n-HA) can effectively increase cell viability and promote axonal elongation, which enhanced saturation magnetization. In addition, we demonstrated that axonal guidance cues Netrin-1 increase significantly after n-HA-coated magnetic nanoparticles treatment by Western blots assay. n-HA-coated magnetic particles maybe applied to enhance or accelerate nerve regeneration, and it may provide guidance for regenerating axons in future.
authors.affiliation: Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, China.
authors.forename: Meili
authors.initials: M
authors.lastname: Liu
authors.affiliation: Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, China.
authors.forename: Gang
authors.initials: G
authors.lastname: Zhou
authors.affiliation: Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, China.
authors.forename: Yongzhao
authors.initials: Y
authors.lastname: Hou
authors.affiliation: Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, China.
authors.forename: Gang
authors.initials: G
authors.lastname: Kuang
authors.affiliation: Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, China.
authors.forename: Zhengtai
authors.initials: Z
authors.lastname: Jia
authors.affiliation: Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, China.
authors.forename: Ping
authors.initials: P
authors.lastname: Li
authors.affiliation: Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, China.
authors.forename: Yubo
authors.initials: Y
authors.lastname: Fan
mesh_terms: D000818:Animals; D001369:Axons / Q000502:physiology; D002478:Cells, Cultured; D020099:Coated Materials, Biocompatible / Q000737:chemistry; D017886:Durapatite / Q000737:chemistry*; D005727:Ganglia, Spinal / Q000166:cytology*; D058185:Magnetite Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D008422:Materials Testing; D009414:Nerve Growth Factors / Q000502:physiology; D009416:Nerve Regeneration / Q000502:physiology; D000075388:Netrin-1; D009474:Neurons / Q000502:physiology; D051381:Rats; D023822:Tissue Engineering / Q000379:methods*; D025521:Tumor Suppressor Proteins / Q000502:physiology
chemical_list: D020099:Coated Materials, Biocompatible; D058185:Magnetite Nanoparticles; D009414:Nerve Growth Factors; C000617354:Ntn1 protein, rat; D025521:Tumor Suppressor Proteins; D000075388:Netrin-1; D017886:Durapatite
keywords: Netrin-1; axonal guidance growth; cell viability; dorsal ganglion neurons(DRG); nano-hydroxyapatite