Dulgerbaki, CigdemOksuz, Aysegul Uygun2026-01-242026-01-2420241073-91491525-6030https://doi.org/10.1080/10739149.2023.2221339https://hdl.handle.net/20.500.12868/5889MicroRNAs (miRNAs), a type of non-protein-coding and small RNAs, are encouraging molecular biomarkers for prior diagnosis of the certain diseases. Here, an electrochemical sensor based on iron oxide/poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate (Fe3O4/PEDOT:PSS) hybrid coated glassy carbon electrode (GCE) is reported to determine microRNA-21 (miRNA-21) as a biosensing platform based on hybridization event. The biosensor was characterized by cyclic voltammetry (CV) measurements. The Fe3O4/PEDOT:PSS demonstrated good sensing performance, including a wide detection range (0.1 pM-1 mu M) and a low detection limit (0.023 pM) for potential medical applications.eninfo:eu-repo/semantics/closedAccessIron oxidepoly(34-ethylenedioxythiophene)poly(styrene sulfonate) (PEDOTPSS)glassy carbon electrode (GCE)cyclic voltammetry (CV)microRNA-21 (miRNA-21)electrochemical biosensorIron oxide/poly(3,4-ethylenedioxythiophene): poly(styrene sulfonate) glassy carbon electrode as a novel label-free electrochemical microRNA-21 sensorArticle10.1080/10739149.2023.222133952167792-s2.0-85161909606Q2WOS:001007670700001Q3