3D bio-printing-based vascular-microtissue electrochemical biosensor for fish parvalbumin detection.
Food Chem
; 445: 138799, 2024 Jul 01.
Article
em En
| MEDLINE
| ID: mdl-38401313
ABSTRACT
A novel 3D bio-printing vascular microtissue biosensor was developed to detect fish parvalbumin quickly. The graphite rod electrode was modified with gold and copper organic framework (Cu-MOF) to improve the sensor properties. Polydopamine-modified multi-wall carbon nanotubes (PDA-MWCNT) were mixed with gelatin methacryloyl (GelMA) to prepare a conductive hydrogel. The conductive hydrogel was mixed with mast cells and endothelial cells to produce a bio-ink for 3D bioprinting. High throughput and standardized preparation of vascular microtissue was performed by stereolithography 3D bioprinting. The vascular microtissue was immobilized on the modified electrode to construct the microtissue sensor. The biosensor's peak current was positively correlated with the fish parvalbumin concentration, and the detection linear concentration range was 0.1â¯â¼â¯2.5⯵g/mL. The standard curve equation was IDPV(µA)â¯=â¯31.30â¯+â¯5.46 CPV(µg/mL), the correlation coefficient R2 was 0.990 (nâ¯=â¯5), and the detection limit was 0.065⯵g/mL. These indicated a biomimetic microtissue sensor detecting fish parvalbumin has been successfully constructed.
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MEDLINE
Assunto principal:
Técnicas Biossensoriais
/
Nanotubos de Carbono
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article