{"Id":"11fe1d4a-304b-4a24-871d-fff907910f07","CanonicalId":"","Url":"","Name":"Electrochemical aptamer-based sensor for real-time monitoring of insulin","Description":"The electrochemical, aptamer-based (E-AB) sensor for the real-time monitoring of insulin utilizes a redox label-modified guanine-rich aptamer which folds into a G-quadruplex for specific recognition of insulin. To develop a reproducible E-AB sensor employing insulin aptamer probes for the detection of insulin, 10% sodium dodecyl sulfate (SDS) pretreatment is crucial as it disrupts interstrand G-quartets. After sensor pretreatment with 10% SDS, a more uniform sensor response is obtained. Upon introduction of the insulin target, binding-induced steric hindrance quantitatively reduces the efficiency of electron transfer of a distal-end redox label leading to the rapid signal change within ∼60 s. Testing demonstrates that the E-AB insulin exhibits a limit of detection of 20 nM and can be used to discriminate against both glucagon and somatostatin in Krebs-Ringer bicarbonate buffer, typically used in perfusion experiments. These results demonstrate that this assay has potential for rapid, specific, and quantitative analysis of insulin.","ResourceType":"DeviceEquipmentTechnology","ParentResourceType":"Technology","DefiningManuscriptId":"PMID30644734","Publications":[],"Contributors":[{"Role":{"CanonicalId":"hirn-cv-ResourceRole-producer","Url":"resources.hirnetwork.org/api/v1/CV/","Name":"Producer","OntologyId":"HIRN"},"HirnUserId":"ryan_white@hirnetwork.org","FirstName":"Ryan","LastName":"White","EmailAddress":"ryan.white@uc.edu","Organization":"University of Cincinnati","Consortia":["CHIB"]}],"Vendor":{"id":null,"Name":null,"Url":null},"VendorResourceName":null,"VendorResourceUrl":null,"VendorCatNumber":null,"VendorLotNumber":null,"DateCreated":"2019-04-26T01:22:20.0718639+00:00","DateModified":"2022-07-01T03:35:24.6175567+00:00","VersionId":"1","ModelVersion":"4.0","TechnologyData":{"Dependencies":[],"AssayTechnologyData":{"BioSampleType":[],"CellsTestedWith":[],"AssayTarget":{"CanonicalId":null,"Url":null,"Name":null,"OntologyId":null},"AssayCategory":{"CanonicalId":null,"Url":null,"Name":null,"OntologyId":null},"TechnologyType":{"CanonicalId":null,"Url":null,"Name":null,"OntologyId":null},"TechnologyPlatform":null,"CompatibleTools":[]},"DeviceEquipmentTechnologyData":{"CompatibleTools":[],"CellsTestedWith":[],"Placeholder":"Test"},"ServiceTechnologyData":{"CellsTestedWith":[],"Placeholder":"test"},"CodePipelineTechnologyData":{"Placeholder":"Test"}}}