Synthesis of Injectable Shear-Thinning Biomaterials of Various Compositions of Gelatin and Synthetic Silicate Nanoplatelet.
gelatin
injectability
laponite
rheology
shear-thinning biomaterial
Journal
Biotechnology journal
ISSN: 1860-7314
Titre abrégé: Biotechnol J
Pays: Germany
ID NLM: 101265833
Informations de publication
Date de publication:
Aug 2020
Aug 2020
Historique:
received:
07
10
2019
revised:
29
01
2020
pubmed:
29
2
2020
medline:
27
2
2021
entrez:
29
2
2020
Statut:
ppublish
Résumé
Injectable shear-thinning biomaterials (iSTBs) have great potential for in situ tissue regeneration through minimally invasive therapeutics. Previously, an iSTB was developed by combining gelatin with synthetic silicate nanoplatelets (SNPs) for potential application to hemostasis and endovascular embolization. Hence, iSTBs are synthesized by varying compositions of gelatin and SNPs to navigate their material, mechanical, rheological, and bioactive properties. All compositions (each component percentage; 1.5-4.5%/total solid ranges; 3-9%) tested are injectable through both 5 Fr general catheter and 2.4 Fr microcatheter by manual pressure. In the results, an increase in gelatin contents causes decrease in swellability, increase in freeze-dried hydrogel scaffold porosity, increase in degradability and injection force during iSTB fabrication. Meanwhile, the amount of SNPs in composite hydrogels is mainly required to decrease degradability and increase shear thinning properties of iSTB. Finally, in vitro and in vivo biocompatibility tests show that the 1.5-4.5% range gelatin-SNP iSTBs are not toxic to the cells and animals. All results demonstrate that the iSTB can be modulated with specific properties for unmet clinical needs. Understanding of mechanical and biological consequences of the changing gelatin-SNP ratios through this study will shed light on the biomedical applications of iSTB on specific diseases.
Identifiants
pubmed: 32107862
doi: 10.1002/biot.201900456
pmc: PMC7415533
mid: NIHMS1583100
doi:
Substances chimiques
Biocompatible Materials
0
Hydrogels
0
Silicates
0
Gelatin
9000-70-8
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
e1900456Subventions
Organisme : NHLBI NIH HHS
ID : R01 HL137193
Pays : United States
Organisme : NHLBI NIH HHS
ID : R01 HL140951
Pays : United States
Organisme : NIH HHS
ID : HL140951
Pays : United States
Organisme : NIH HHS
ID : HL137193
Pays : United States
Informations de copyright
© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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