Article (Scientific journals)
Cellulose nano-dispersions enhanced by ultrasound assisted chemical modification drive osteoblast proliferation and differentiation in PVA/HA bone tissue engineering scaffolds.
Zhu, Shunshun; Sun, Hongnan; Mu, Taihua et al.
2024In International Journal of Biological Macromolecules, 279 (Pt 4), p. 135571
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Keywords :
Bone tissue engineering scaffold; Calcium hydroxide (PubChem CID: 6093208); Cellulose nanocrystals; Glacial acetic acid (PubChem CID: 176); Hydrochloric acid (PubChem CID: 313); Hydroxyapatite; Phosphoric acid (PubChem CID: 1004); Sodium chlorite (PubChem CID: 23668197); Sodium hydroxide (PubChem CID: 14978); Bone tissue engineering; Glacial acetic acid; Pubchem; Sodium chlorite; Sodium hydroxides; Tissue engineering scaffold; Structural Biology; Biochemistry; Molecular Biology
Abstract :
[en] To develop a biological bone tissue scaffold with uniform pore size and good cell adhesion was both challenging and imperative. We prepared modified cellulose nanocrystals (CNCs) dispersants (K-PCNCs) by ultrasound-assisted alkylation modification. Subsequently, nano-hydroxyapatite (HC-K) was synthesized using K-PCNCs as a dispersant and composited with polyvinyl alcohol (PVA) to prepare the scaffold using the ice template method. The results showed that the water contact angle and degree of substitution (135°, 1.53) of the K-PCNCs were highest when the ultrasound power was 450 W and the time was 2 h. The dispersion of K-PCNCs prepared under this condition was optimal. SEM showed that the pore distribution of the composite scaffolds was more homogeneous than the PVA scaffold. The porosity, equilibrium swelling rate, and mechanical properties of the composite scaffolds increased and then decreased with the increase of HC-K content, and reached the maximum values (56.1 %, 807.7 %, and 0.085 ± 0.004 MPa) at 9 % (w/w) of HC-K content. Cell experiments confirmed scaffold has good cytocompatibility and mineralization capacity. The ALP activity reached 1.71 ± 0.25 (ALP activity/mg protein). In conclusion, the scaffolds we developed have good biocompatibility and mechanical properties and have great potential in promoting bone defect repair.
Disciplines :
Chemistry
Author, co-author :
Zhu, Shunshun ;  Université de Liège - ULiège > TERRA Research Centre ; Laboratory of Food Chemistry and Nutrition Science, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, No. 2 Yuan Ming Yuan West Road, Haidian District, P.O. Box 5109, Beijing 100193, China
Sun, Hongnan;  Laboratory of Food Chemistry and Nutrition Science, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, No. 2 Yuan Ming Yuan West Road, Haidian District, P.O. Box 5109, Beijing 100193, China. Electronic address: sunhongnan@caas.cn
Mu, Taihua;  Laboratory of Food Chemistry and Nutrition Science, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, No. 2 Yuan Ming Yuan West Road, Haidian District, P.O. Box 5109, Beijing 100193, China. Electronic address: mutaihua@126.com
Richel, Aurore  ;  Université de Liège - ULiège > Département GxABT > Chemistry for Sustainable Food and Environmental Systems (CSFES)
Language :
English
Title :
Cellulose nano-dispersions enhanced by ultrasound assisted chemical modification drive osteoblast proliferation and differentiation in PVA/HA bone tissue engineering scaffolds.
Publication date :
12 September 2024
Journal title :
International Journal of Biological Macromolecules
ISSN :
0141-8130
eISSN :
1879-0003
Publisher :
Elsevier B.V., Netherlands
Volume :
279
Issue :
Pt 4
Pages :
135571
Peer reviewed :
Peer Reviewed verified by ORBi
Development Goals :
3. Good health and well-being
12. Responsible consumption and production
Funders :
CAAS - Chinese Academy of Agricultural Sciences
Funding text :
The authors gratefully acknowledge the earmarked fund for CARS (CARS-10) , and the Science and Technology Innovation Project of the Chinese Academy of Agricultural Sciences ( CAAS-ASTIP-202X-IFST ).
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since 08 October 2024

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