2026-08-05T09:54:33Zhttps://repisalud.isciii.es/rest/oai/request

oai:repisalud.isciii.es:20.500.12105/168692025-05-05T09:49:04Zcom_20.500.12105_2052com_20.500.12105_2051col_20.500.12105_19617

00925njm 22002777a 4500 dc Sebuyoya, Ravery author Valverde, Alejandro author Moranova, Ludmila author Strmiskova, Johana author Hrstka, Roman author Ruiz-Valdepeñas Montiel, Víctor author Pingarrón, José M author Barderas Manchado, Rodrigo author Campuzano, Susana author Bartosik, Martin author 2023 DNA point mutation in a BRAF proto-oncogene, V600E, is considered an important prognostic and predictive biomarker in various types of cancer, such as melanoma or colorectal cancer. We report here a novel electrochemical (EC) bioplatform for the analysis of BRAF V600E mutation coupled with rolling circle amplification (RCA) and locked nucleic acid (LNA) capture probes. A dual detection system was implemented, whereby two padlock probes complementary to either wild-type (wt) BRAF gene or DNA with V600E mutation (mut) led to amplification of wt or mut variant, respectively. Hybridization with specific LNA capture probes then increased the assay specificity, while EC detection provided rapid measurement times. The bioplatform was applied to analyze BRAF V600E mutation of cancer cells and tumor tissues from patients with melanoma or colorectal cancer. This is the first RCA-based EC bioplatform for BRAF analysis in a dual format without using PCR or sophisticated instrumentation. Sensors & Actuators: B. Chemical.2023; 394:134375. 10.1016/j.snb.2023.134375 0925-4005 Sensors and Actuators B: Chemical http://hdl.handle.net/20.500.12105/16869 BRAF V600E mutation Tumor biomarker Electrochemical analysis Rolling circle amplification Dual detection Locked nucleic acid Dual detection system for cancer-associated point mutations assisted by a multiplexed LNA-based amperometric bioplatform coupled with rolling circle amplification