A conductive cell-imprinted substrate based on CNT-PDMS composite.
Biotechnol Appl Biochem
; 66(3): 445-453, 2019 May.
Article
en En
| MEDLINE
| ID: mdl-30817028
ABSTRACT
Cell function regulation is influenced by continuous biochemical and biophysical signal exchange within the body. Substrates with nano/micro-scaled topographies that mimic the physiological niche are widely applied for tissue engineering applications. As the cartilage niche is composed of several stimulating factors, a multifunctional substrate providing topographical features while having the capability of electrical stimulation is presented. Herein, we demonstrate a biocompatible and conductive chondrocyte cell-imprinted substrate using polydimethylsiloxane (PDMS) and carbon nanotubes (CNTs) as conductive fillers. Unlike the conventional silicon wafers or structural photoresist masters used for molding, cell surface topographical replication is challenging as biological cells showed extremely sensitive to chemical solvent residues during molding. The composite showed no significant difference compared with PDMS with regard to cytotoxicity, whereas an enhanced cell adhesion was observed on the conductive composite's surface. Integration of nanomaterials into the cell seeding scaffolds can make tissue regeneration process more efficient.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Materiales Biocompatibles
/
Técnicas de Cultivo de Célula
/
Condrocitos
/
Nanotubos de Carbono
/
Dimetilpolisiloxanos
Límite:
Animals
Idioma:
En
Revista:
Biotechnol Appl Biochem
Asunto de la revista:
BIOQUIMICA
/
BIOTECNOLOGIA
Año:
2019
Tipo del documento:
Article
País de afiliación:
Irán