An electrochemical peptide sensor for detection of dengue fever biomarker NS1

Analytica Chimica Acta
Jong Min LimJong Pil Park

Abstract

Dengue virus type 2 NS1 (DENV2 NS1) is a specific and sensitive protein biomarker for dengue fever diagnosis. In this study we used polyvalent phage display to identify unique affinity peptides that can bind NS1 protein. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) were used to investigate the binding interactions. The potential affinity peptide-displayed phage from these methods was selected; its sequence was EHDRMHAYYLTR (R3#10). Amino acid sequence analysis showed that the peptide was rich in basic residues (two His and Arg). Among all the peptides tested, R3#10 showed the greatest decrease in current in CV and increase in impedance in EIS upon binding to NS1 proteins. EIS revealed that R3#10 phage clones were more specific towards NS1 proteins, as compared to bovine serum albumin or the M13 wild type used as control. Detection of NS1 proteins is in accordance with the electron-transfer resistance (Rct) value of the sensor layer, which is confirmed by EIS, and the Kd value of the R3#10 peptide while binding to the phage particles was measured. To the best of our knowledge, this is the first example of identification and characterization of NS1 binding affinity peptides using phage display technolo...Continue Reading

Citations

May 24, 2019·Biosensors·Yeşeren SaylanAdil Denizli
Apr 15, 2020·Journal of the Electrochemical Society·Tugba OzerCharles S Henry
Jul 19, 2019·Biosensors & Bioelectronics·J R AnushaC Justin Raj
Jun 18, 2019·Biosensors & Bioelectronics·Robert K JohnstonJason C Harper
Apr 20, 2021·Analytica Chimica Acta·Laís Canniatti BrazacaEmanuel Carrilho
Jul 4, 2021·Talanta·Bassam Bachour JuniorMarcelo Mulato
Jul 11, 2021·Biosensors & Bioelectronics·Marcello MasciniSylvia Daunert
Aug 9, 2021·Talanta·Taís Aparecida Reis CordeiroLucas Franco Ferreira
Aug 29, 2019·ACS Omega·Riikka PeltomaaMaría C Moreno-Bondi

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