A highly sensitive electrochemical magneto-genosensing assay for the specific detection of a single nucleotide variation in the KRAS oncogene in human plasma

Liquid biopsy is a non-invasive and efficient technique for the detection of tumor biomarkers in biological fluids, which currently represents a new frontier in theranostics and precision medicine. Among mutations of the KRAS oncogene, p.G12D single nucleotide variation in the KRAS gene plays a cent...

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Main Authors: Simone Fortunati, Chiara Giliberti, Marco Giannetto, Alessandro Bertucci, Sabrina Capodaglio, Elena Ricciardi, Patrizio Giacomini, Valentina Bianchi, Andrea Boni, Ilaria De Munari, Roberto Corradini, Maria Careri
Format: Article
Language:English
Published: Elsevier 2023-12-01
Series:Biosensors and Bioelectronics: X
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2590137023001012
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author Simone Fortunati
Chiara Giliberti
Marco Giannetto
Alessandro Bertucci
Sabrina Capodaglio
Elena Ricciardi
Patrizio Giacomini
Valentina Bianchi
Andrea Boni
Ilaria De Munari
Roberto Corradini
Maria Careri
author_facet Simone Fortunati
Chiara Giliberti
Marco Giannetto
Alessandro Bertucci
Sabrina Capodaglio
Elena Ricciardi
Patrizio Giacomini
Valentina Bianchi
Andrea Boni
Ilaria De Munari
Roberto Corradini
Maria Careri
author_sort Simone Fortunati
collection DOAJ
description Liquid biopsy is a non-invasive and efficient technique for the detection of tumor biomarkers in biological fluids, which currently represents a new frontier in theranostics and precision medicine. Among mutations of the KRAS oncogene, p.G12D single nucleotide variation in the KRAS gene plays a central role in the early diagnosis and therapeutic treatment of colorectal cancer. In this context, we developed a highly sensitive magneto-genosensing assay based on PNA capture probes immobilized on magnetic microbeads. To detect the mutation of the KRAS oncogene, two capture probe sequences recognizing wild-type and p.G12D tumor DNA were used in association with a DNA signaling probe allowing for electrochemical detection using an enzyme conjugate. The assay conditions were optimized using a 32 full-factorial design, obtaining an outstanding specificity, evidenced by a remarkably lower (>95%) signal of the singly-mismatched- compared to that of fully-complementary-DNA. Ultra-high sensitivity was achieved in 10-fold diluted human plasma reaching detection limits of 818 fM for the p.G12D and 1.8 pM for the wild-type targets. The genosensing assay was tested on genomic tumor DNA samples provided by IRCCS-Regina Elena National Cancer Institute and finally integrated into a smart portable multichannel potentiostat capable of performing up to four simultaneous acquisitions. The developed magneto-genosensing assay demonstrated portability, simplicity, and high sensitivity, showing good potential as theranostic tool for personalized medicine in oncology.
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spelling doaj.art-23305f6eed1d44ebb5bfe7f1fb3282f12023-12-10T06:17:25ZengElsevierBiosensors and Bioelectronics: X2590-13702023-12-0115100404A highly sensitive electrochemical magneto-genosensing assay for the specific detection of a single nucleotide variation in the KRAS oncogene in human plasmaSimone Fortunati0Chiara Giliberti1Marco Giannetto2Alessandro Bertucci3Sabrina Capodaglio4Elena Ricciardi5Patrizio Giacomini6Valentina Bianchi7Andrea Boni8Ilaria De Munari9Roberto Corradini10Maria Careri11University of Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parco Area Delle Scienze 17/A, 43124, Parma, ItalyUniversity of Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parco Area Delle Scienze 17/A, 43124, Parma, ItalyUniversity of Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parco Area Delle Scienze 17/A, 43124, Parma, Italy; Corresponding author.University of Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parco Area Delle Scienze 17/A, 43124, Parma, ItalyUniversity of Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parco Area Delle Scienze 17/A, 43124, Parma, ItalyUOC Oncological Translational Research, IRCCS-Regina Elena National Cancer Institute, 00144, Rome, ItalyClinical Trial Center, IRCSS-Regina Elena National Cancer Institute/Istituto Dermatologico San Gallicano, 00144, Rome, ItalyUniversity of Parma, Department of Engineering and Architecture, Parco Area Delle Scienze 181/A, 43124, Parma, ItalyUniversity of Parma, Department of Engineering and Architecture, Parco Area Delle Scienze 181/A, 43124, Parma, ItalyUniversity of Parma, Department of Engineering and Architecture, Parco Area Delle Scienze 181/A, 43124, Parma, ItalyUniversity of Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parco Area Delle Scienze 17/A, 43124, Parma, ItalyUniversity of Parma, Department of Chemistry, Life Sciences and Environmental Sustainability, Parco Area Delle Scienze 17/A, 43124, Parma, ItalyLiquid biopsy is a non-invasive and efficient technique for the detection of tumor biomarkers in biological fluids, which currently represents a new frontier in theranostics and precision medicine. Among mutations of the KRAS oncogene, p.G12D single nucleotide variation in the KRAS gene plays a central role in the early diagnosis and therapeutic treatment of colorectal cancer. In this context, we developed a highly sensitive magneto-genosensing assay based on PNA capture probes immobilized on magnetic microbeads. To detect the mutation of the KRAS oncogene, two capture probe sequences recognizing wild-type and p.G12D tumor DNA were used in association with a DNA signaling probe allowing for electrochemical detection using an enzyme conjugate. The assay conditions were optimized using a 32 full-factorial design, obtaining an outstanding specificity, evidenced by a remarkably lower (>95%) signal of the singly-mismatched- compared to that of fully-complementary-DNA. Ultra-high sensitivity was achieved in 10-fold diluted human plasma reaching detection limits of 818 fM for the p.G12D and 1.8 pM for the wild-type targets. The genosensing assay was tested on genomic tumor DNA samples provided by IRCCS-Regina Elena National Cancer Institute and finally integrated into a smart portable multichannel potentiostat capable of performing up to four simultaneous acquisitions. The developed magneto-genosensing assay demonstrated portability, simplicity, and high sensitivity, showing good potential as theranostic tool for personalized medicine in oncology.http://www.sciencedirect.com/science/article/pii/S2590137023001012Point-of-CarePrecision medicineKRASColorectal cancerElectrochemical genoassayMagnetic microbeads
spellingShingle Simone Fortunati
Chiara Giliberti
Marco Giannetto
Alessandro Bertucci
Sabrina Capodaglio
Elena Ricciardi
Patrizio Giacomini
Valentina Bianchi
Andrea Boni
Ilaria De Munari
Roberto Corradini
Maria Careri
A highly sensitive electrochemical magneto-genosensing assay for the specific detection of a single nucleotide variation in the KRAS oncogene in human plasma
Biosensors and Bioelectronics: X
Point-of-Care
Precision medicine
KRAS
Colorectal cancer
Electrochemical genoassay
Magnetic microbeads
title A highly sensitive electrochemical magneto-genosensing assay for the specific detection of a single nucleotide variation in the KRAS oncogene in human plasma
title_full A highly sensitive electrochemical magneto-genosensing assay for the specific detection of a single nucleotide variation in the KRAS oncogene in human plasma
title_fullStr A highly sensitive electrochemical magneto-genosensing assay for the specific detection of a single nucleotide variation in the KRAS oncogene in human plasma
title_full_unstemmed A highly sensitive electrochemical magneto-genosensing assay for the specific detection of a single nucleotide variation in the KRAS oncogene in human plasma
title_short A highly sensitive electrochemical magneto-genosensing assay for the specific detection of a single nucleotide variation in the KRAS oncogene in human plasma
title_sort highly sensitive electrochemical magneto genosensing assay for the specific detection of a single nucleotide variation in the kras oncogene in human plasma
topic Point-of-Care
Precision medicine
KRAS
Colorectal cancer
Electrochemical genoassay
Magnetic microbeads
url http://www.sciencedirect.com/science/article/pii/S2590137023001012
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