Elucidating the Mechanism of Large-Diameter Titanium Dioxide Nanotubes in Protecting Osteoblasts Under Oxidative Stress Environment: The Role of Fibronectin and Albumin Adsorption.
Titanium
/ chemistry
Animals
Osteoblasts
/ drug effects
Oxidative Stress
/ drug effects
Fibronectins
/ pharmacology
Nanotubes
/ chemistry
Rats
Osteogenesis
/ drug effects
Adsorption
/ drug effects
Rats, Sprague-Dawley
Reactive Oxygen Species
/ metabolism
Male
Serum Albumin, Bovine
/ chemistry
Surface Properties
Endoplasmic Reticulum Stress
/ drug effects
Cell Survival
/ drug effects
Proteomics
/ methods
osteogenesis
osteoporosis
oxidative stress
protein adsorption
titania nanotube
Journal
International journal of nanomedicine
ISSN: 1178-2013
Titre abrégé: Int J Nanomedicine
Pays: New Zealand
ID NLM: 101263847
Informations de publication
Date de publication:
2024
2024
Historique:
received:
22
07
2024
accepted:
17
10
2024
medline:
28
10
2024
pubmed:
28
10
2024
entrez:
28
10
2024
Statut:
epublish
Résumé
Large-diameter titanium dioxide nanotubes (TNTs) have shown promise in preserving osteoblast function under oxidative stress (OS) in vitro. However, their ability to enhance osteogenesis in vivo under OS conditions and the underlying mechanisms remain unclear. This study aimed to evaluate the osteogenic potential of 110 nm TNTs (TNT110) compared to 30 nm TNTs (TNT30) in an aging rat model exhibiting OS, and to investigate the mechanisms involved. Surface properties of TNTs were characterized, and in vitro and in vivo experiments were conducted to assess their osteoinductive effects under OS. Transcriptomic, proteomic analyses, and Western blotting were performed to investigate the protective mechanisms of TNT110 on osteoblasts. Protein adsorption studies focused on the roles of fibronectin (FN) and albumin (BSA) in modulating osteoblast behavior on TNT110. In both in vitro and in vivo experiments, TNT110 significantly improved new bone formation and supported osteoblast survival under OS conditions. Subsequent ribonucleic acid sequencing results indicated that TNT110 tended to attenuate inflammatory responses and reactive oxygen species (ROS) expression while promoting endoplasmic reticulum (ER) stress and extracellular matrix receptor interactions, all of which are crucial for osteoblast survival and functionality. Further confirmation indicated that the cellular behavior changes of osteoblasts in the TNT110 group could only occur in the presence of serum. Moreover, proteomic analysis under OS conditions revealed the pivotal roles of FN and BSA in augmenting TNT110's resistance to OS. Surface pretreatment of TNT110 with FN/BSA alone could beneficially influence the early adhesion, spreading, ER activity, and ROS expression of osteoblasts, a trend not observed with TNT30. TNT110 effectively protects osteoblast function in the OS microenvironment by modulating protein adsorption, with FN and BSA synergistically enhancing osteogenesis. These findings suggest TNT110's potential for use in implants for elderly patients.
Sections du résumé
Background
UNASSIGNED
Large-diameter titanium dioxide nanotubes (TNTs) have shown promise in preserving osteoblast function under oxidative stress (OS) in vitro. However, their ability to enhance osteogenesis in vivo under OS conditions and the underlying mechanisms remain unclear.
Purpose
UNASSIGNED
This study aimed to evaluate the osteogenic potential of 110 nm TNTs (TNT110) compared to 30 nm TNTs (TNT30) in an aging rat model exhibiting OS, and to investigate the mechanisms involved.
Methods
UNASSIGNED
Surface properties of TNTs were characterized, and in vitro and in vivo experiments were conducted to assess their osteoinductive effects under OS. Transcriptomic, proteomic analyses, and Western blotting were performed to investigate the protective mechanisms of TNT110 on osteoblasts. Protein adsorption studies focused on the roles of fibronectin (FN) and albumin (BSA) in modulating osteoblast behavior on TNT110.
Results
UNASSIGNED
In both in vitro and in vivo experiments, TNT110 significantly improved new bone formation and supported osteoblast survival under OS conditions. Subsequent ribonucleic acid sequencing results indicated that TNT110 tended to attenuate inflammatory responses and reactive oxygen species (ROS) expression while promoting endoplasmic reticulum (ER) stress and extracellular matrix receptor interactions, all of which are crucial for osteoblast survival and functionality. Further confirmation indicated that the cellular behavior changes of osteoblasts in the TNT110 group could only occur in the presence of serum. Moreover, proteomic analysis under OS conditions revealed the pivotal roles of FN and BSA in augmenting TNT110's resistance to OS. Surface pretreatment of TNT110 with FN/BSA alone could beneficially influence the early adhesion, spreading, ER activity, and ROS expression of osteoblasts, a trend not observed with TNT30.
Conclusion
UNASSIGNED
TNT110 effectively protects osteoblast function in the OS microenvironment by modulating protein adsorption, with FN and BSA synergistically enhancing osteogenesis. These findings suggest TNT110's potential for use in implants for elderly patients.
Identifiants
pubmed: 39464678
doi: 10.2147/IJN.S488154
pii: 488154
pmc: PMC11512530
doi:
Substances chimiques
Titanium
D1JT611TNE
titanium dioxide
15FIX9V2JP
Fibronectins
0
Reactive Oxygen Species
0
Serum Albumin, Bovine
27432CM55Q
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
10639-10659Informations de copyright
© 2024 Xiang et al.
Déclaration de conflit d'intérêts
The authors report no conflicts of interest in this work.