Enhanced biocompatibility and osteogenic differentiation of mesenchymal stem cells of titanium by Sr-Ga clavate double hydroxides.
Maowen ChenBailong TaoYan HuMenghuan LiMaohua ChenLu TanZhong LuoKaiyong CaiPublished in: Journal of materials chemistry. B (2022)
To improve in vivo osseointegration of pure titanium implant, Sr-Ga clavate double hydroxide (CDH) coating was grown in situ on a titanium (Ti) substrate with simple hydrothermal and calcination treatments at 500 °C. The obtained coating on the Ti substrate (Ti-CDH and Ti-CDH500) was researched by scanning electron microscopy (SEM), X-ray diffraction (XRD), and energy dispersive spectroscopy (EDS). Ti-CDH exhibited a sustained release profile of metal ions and maintained a slightly alkaline environment. The CDH coating was beneficial for osteogenic differentiation of mesenchymal stem cells (MSCs), which were reflected by the results of cellular assays, including alkaline phosphatase activity (ALP), cell mineralization capability (ARS), and osteogenesis-related gene expression. Besides, Ti-CDH could effectively improve the autophagic levels in MSCs, which further promoted osteogenic differentiation of MSCs. Hence, the Ti surface with Sr-Ga CDH modification supplied a simple and effective strategy to design biomaterials for bone generation.
Keyphrases
- mesenchymal stem cells
- electron microscopy
- umbilical cord
- pet ct
- gene expression
- high resolution
- cell therapy
- bone marrow
- dna methylation
- stem cells
- magnetic resonance
- computed tomography
- amino acid
- bone mineral density
- soft tissue
- risk assessment
- mass spectrometry
- single molecule
- postmenopausal women
- contrast enhanced