Caco-2 cell-derived biomimetic electrochemical biosensor for cholera toxin detection

Copyright © 2023 Elsevier B.V. All rights reserved..

Cholera is a highly contagious and lethal waterborne disease induced by an infection with Vibrio cholerae (V. cholerae) secreting cholera toxin (CTx). Cholera toxin subunit B (CTxB) from the CTx specifically binds with monosialo-tetra-hexosyl-ganglioside (GM1) found on the exterior cell membrane of an enterocyte. Bioinspired by the pathological process of CTx, we developed an electrochemical biosensor with GM1-expressing Caco-2 cell membrane (CCM) on the electrode surface. Briefly, the electrode surface was functionalized with CCM using the vesicle fusion method. We determined the CTxB detection performances of Caco-2 cell membrane-coated biosensor (CCB) using electrochemical impedance spectroscopy (EIS). the CCB had an excellent limit of detection of ∼11.46 nM and a detection range spanning 100 ng/mL - 1 mg/mL. In addition, the CCB showed high selectivity against various interfering molecules, including abundant constituents of intestinal fluid and various bacterial toxins. The long-term stability of the CCBs was also verified for 3 weeks using EIS. Overall, the CCB has excellent potential for practical use such as point-of-care and cost-effective testing for CTxB detection in developing countries.

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:226

Enthalten in:

Biosensors & bioelectronics - 226(2023) vom: 15. Apr., Seite 115105

Sprache:

Englisch

Beteiligte Personen:

Kim, Yonghwan [VerfasserIn]
Lee, Dongtak [VerfasserIn]
Seo, Youngjun [VerfasserIn]
Jung, Hyo Gi [VerfasserIn]
Jang, Jae Won [VerfasserIn]
Park, Dongsung [VerfasserIn]
Kim, Insu [VerfasserIn]
Kim, Jaeheung [VerfasserIn]
Lee, Gyudo [VerfasserIn]
Hwang, Kyo Seon [VerfasserIn]
Kim, Seung-Hyun [VerfasserIn]
Lee, Sang Won [VerfasserIn]
Lee, Jeong Hoon [VerfasserIn]
Yoon, Dae Sung [VerfasserIn]

Links:

Volltext

Themen:

37758-47-7
9012-63-9
Bioinspired
Biosensor
Caco-2 cell membrane
Cholera
Cholera Toxin
Cholera toxin subunit B
Electrochemical impedance spectroscopy
G(M1) Ganglioside
Journal Article

Anmerkungen:

Date Completed 24.02.2023

Date Revised 24.02.2023

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.bios.2023.115105

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM352559950