Carbon nanotubes promote cell migration in hydrogels

Injectable hydrogels are increasingly used for in situ tissue regeneration and wound healing. Ideally, an injectable implant should promote the recruitment of cells from the surrounding native tissue and allow cells to migrate freely as they generate a new extracellular matrix network. Nanocomposite...

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Bibliographic Details
Published in:Scientific reports 2020-02, Vol.10 (1), p.2543, Article 2543
Main Authors: Ravanbakhsh, Hossein, Bao, Guangyu, Mongeau, Luc
Format: Article
Language:English
Subjects:
Animals
Boyden chamber
Cell adhesion
Cell adhesion & migration
Cell Adhesion - drug effects
Cell migration
Cell Movement - drug effects
Chitosan
Chitosan - chemistry
Chitosan - pharmacology
Cytology
Extracellular matrix
Flow cytometry
Humans
Hydrogels
Hydrogels - chemistry
Hydrogels - pharmacology
Image processing
Nanotubes
Nanotubes, Carbon - chemistry
Segmentation
Tissue Engineering
Wound healing
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Summary:Injectable hydrogels are increasingly used for in situ tissue regeneration and wound healing. Ideally, an injectable implant should promote the recruitment of cells from the surrounding native tissue and allow cells to migrate freely as they generate a new extracellular matrix network. Nanocomposite hydrogels such as carbon nanotube (CNT)-loaded hydrogels have been hypothesized to promote cell recruitment and cell migration relative to unloaded ones. To investigate this, CNT-glycol chitosan hydrogels were synthesized and studied. Chemoattractant-induced cell migration was studied using a modified Boyden Chamber experiment. Migrated cells were counted using flow cytometry. Cell adhesion was inferred from the morphology of the cells via an image segmentation method. Cell migration and recruitment results confirmed that small concentrations of CNT significantly increase cell migration in hydrogels, thereby accelerating tissue regeneration and wound healing in situations where there is insufficient migration in the unloaded matrix.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-020-59463-9