Kawin NawattanapaiboonWansika KiatpathomchaiPitak SantanirandApirom VongsakulyanonRatthasart AmaritArmote SomboonkaewBoonsong SutapunToemsak SrikhirinMahidol UniversityThailand National Center for Genetic Engineering and BiotechnologyThailand National Electronics and Computer Technology CenterSuranaree University of Technology2018-11-232018-11-232015-12-05Biosensors and Bioelectronics. Vol.74, (2015), 335-34018734235095656632-s2.0-84936745354https://repository.li.mahidol.ac.th/handle/20.500.14594/35326© 2015 Elsevier B.V.. In this study, we evaluated surface plasmon resonance imaging (SPR imaging) as a DNA biosensor for the detection of methicillin-resistant Staphylococcus aureus (MRSA) which is one of the most common causes of nosocomial infections. The DNA sample were collected from clinical specimens, including sputum and blood hemoculture were undergone LAMP amplification for 0.18. kbp and 0.23. kbp DNA fragments of femB and mecA genes, respectively. The self-assembled monolayer surface (SAMs) was used for immobilized streptavidin-biotinylated probes on the sensor surface for the detection of LAMP amplicons from MRSA. Both LAMP amplicons were simultaneously hybridized with ssDNA probes immobilized onto a bio-functionalized surface to detect specific targets in the multiplex DNA array platform. In addition, the sensor surface could be regenerated allowing at least five cycles of use with a shortened assay time. The detection limit of LAMP-SPR sensing was 10 copies/μl and LAMP-SPR sensing system showed a good selectivity toward the MRSA.Mahidol UniversityBiochemistry, Genetics and Molecular BiologyChemistryEngineeringMedicineArticleSCOPUS10.1016/j.bios.2015.06.038