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Daems E, Bassini S, Mariën L, Op de Beeck H, Stratulat A, Zwaenepoel K, Vandamme T, Op de Beeck K, Koljenović S, Peeters M, Van Camp G, De Wael K. Singlet oxygen-based photoelectrochemical detection of single-point mutations in the KRAS oncogene. Biosens Bioelectron 2024; 249:115957. [PMID: 38199080 DOI: 10.1016/j.bios.2023.115957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 12/18/2023] [Accepted: 12/20/2023] [Indexed: 01/12/2024]
Abstract
Single nucleotide point mutations in the KRAS oncogene occur frequently in human cancers, rendering them intriguing targets for diagnosis, early detection and personalized treatment. Current detection methods are based on polymerase chain reaction, sometimes combined with next-generation sequencing, which can be expensive, complex and have limited availability. Here, we propose a novel singlet oxygen (1O2)-based photoelectrochemical detection methodology for single-point mutations, using KRAS mutations as a case study. This detection method combines the use of a sandwich assay, magnetic beads and robust chemical photosensitizers, that need only air and light to produce 1O2, to ensure high specificity and sensitivity. We demonstrate that hybridization of the sandwich hybrid at high temperatures enables discrimination between mutated and wild-type sequences with a detection rate of up to 93.9%. Additionally, the presence of background DNA sequences derived from human cell-line DNA, not containing the mutation of interest, did not result in a signal, highlighting the specificity of the methodology. A limit of detection as low as 112 pM (1.25 ng/mL) was achieved without employing any amplification techniques. The developed 1O2-based photoelectrochemical methodology exhibits unique features, including rapidity, ease of use, and affordability, highlighting its immense potential in the field of nucleic acid-based diagnostics.
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Affiliation(s)
- Elise Daems
- A-Sense Lab, Department of Bioscience Engineering, University of Antwerp, Antwerp, 2020, Belgium; NANOlab Center of Excellence, University of Antwerp, Antwerp, 2020, Belgium
| | - Simone Bassini
- A-Sense Lab, Department of Bioscience Engineering, University of Antwerp, Antwerp, 2020, Belgium; NANOlab Center of Excellence, University of Antwerp, Antwerp, 2020, Belgium
| | - Laura Mariën
- Center of Medical Genetics, University of Antwerp and Antwerp University Hospital, Edegem, 2650, Belgium; Center for Oncological Research, Integrated Personalized & Precision Oncology Network (IPPON), University of Antwerp, Wilrijk, 2610, Belgium
| | - Hannah Op de Beeck
- A-Sense Lab, Department of Bioscience Engineering, University of Antwerp, Antwerp, 2020, Belgium; NANOlab Center of Excellence, University of Antwerp, Antwerp, 2020, Belgium
| | - Alexandr Stratulat
- A-Sense Lab, Department of Bioscience Engineering, University of Antwerp, Antwerp, 2020, Belgium; NANOlab Center of Excellence, University of Antwerp, Antwerp, 2020, Belgium
| | - Karen Zwaenepoel
- Center for Oncological Research, Integrated Personalized & Precision Oncology Network (IPPON), University of Antwerp, Wilrijk, 2610, Belgium; Department of Pathology, Antwerp University Hospital, Edegem, 2650, Belgium
| | - Timon Vandamme
- Center for Oncological Research, Integrated Personalized & Precision Oncology Network (IPPON), University of Antwerp, Wilrijk, 2610, Belgium; Department of Oncology and Multidisciplinary Oncological Center Antwerp (MOCA), Antwerp University Hospital, Edegem, 2650, Belgium
| | - Ken Op de Beeck
- Center of Medical Genetics, University of Antwerp and Antwerp University Hospital, Edegem, 2650, Belgium; Center for Oncological Research, Integrated Personalized & Precision Oncology Network (IPPON), University of Antwerp, Wilrijk, 2610, Belgium
| | - Senada Koljenović
- Center for Oncological Research, Integrated Personalized & Precision Oncology Network (IPPON), University of Antwerp, Wilrijk, 2610, Belgium; Department of Pathology, Antwerp University Hospital, Edegem, 2650, Belgium
| | - Marc Peeters
- Center for Oncological Research, Integrated Personalized & Precision Oncology Network (IPPON), University of Antwerp, Wilrijk, 2610, Belgium; Department of Oncology and Multidisciplinary Oncological Center Antwerp (MOCA), Antwerp University Hospital, Edegem, 2650, Belgium
| | - Guy Van Camp
- Center of Medical Genetics, University of Antwerp and Antwerp University Hospital, Edegem, 2650, Belgium; Center for Oncological Research, Integrated Personalized & Precision Oncology Network (IPPON), University of Antwerp, Wilrijk, 2610, Belgium
| | - Karolien De Wael
- A-Sense Lab, Department of Bioscience Engineering, University of Antwerp, Antwerp, 2020, Belgium; NANOlab Center of Excellence, University of Antwerp, Antwerp, 2020, Belgium.
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