A low fouling and high biocompatibility electrochemical sensor based on the electrospun gelatin-PLGA-CNTs nanofibers for dopamine detection in blood

Publisher:
Wiley
Publication Type:
Journal Article
Citation:
Journal of Applied Polymer Science, 2024, 141, (38)
Issue Date:
2024-10-10
Full metadata record
The ability to fabricate resisting nonspecific protein adsorption electrochemical sensor capable of high biocompatibility in vivo will undoubtedly underpin key future developments in life sciences. Herein, a gelatin-poly(lactide-co-glycolide)-carbon nanotubes nanofibers-membrane in three-dimensional porous structure without any chemical crosslinking is constructed on the carbon fiber microelectrode (e-Gelatin-PLGA-CNTs/CFME) using a one-step electrospinning technology. The nanofibers-membrane still presents good three-dimensional porous structure and excellent hydrophily after implantation in BSA solution. In addition, the dopamine hydrochloride (DA) sensitivity at e-Gelatin-PLGA-CNTs/CFME after implantation in human blood samples exhibits almost the same as preimplantation (91% ± 9%, n = 3). Importantly, the nanofibers-membrane possesses fast cell proliferation and a low hemolysis rate (2.27% ± 0.76%), satisfying the required biocompatibility as a constructed material for the detection in vivo. The constructed micro-electrochemical sensor realizes the detection of DA in human blood samples. Consequently, this strategy offers a new and facile platform for the development of implanted electrochemical sensor.
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