title: Thrombin detection using a piezoelectric aptamer-linked immunosorbent assay.
abstract: The development of diagnostic assays using highly targeted specific aptamers with existing detection platforms has been an endeavor with few opportunities until now. Many current commercially available diagnostic platforms make use of detection systems employing capture agents composed of modified antigen-specific antibodies coupled with a variety of detection modalities, including radioimmunoassays, fluorescence-based detection assays, electro/chemiluminescence assays, and immunoradiometric assays. In the studies presented here, a novel frequency-modulating technology from BioScale called Acoustic Membrane MicroParticle (AMMP) detection was used to demonstrate a sensitive and reproducible method of incorporating aptamers as capture and detection agents. The method provides a robust and rapid detection of thrombin in human serum while also eliminating the labor-intensive efforts of Western blot analysis and is not affected by the interfering substances found in serum that often affect optical-based detection systems. In addition, we have demonstrated, for the first time, the adaptation of the AMMP platform to exploit aptamers against a clinically relevant target. The AMMP platform is an ideal medium for using aptamers in commercial assay development for application in a clinical setting.
authors.affiliation: Loxbridge Research, Royal Institution of Great Britain, London W1S 4BS, UK.
authors.forename: Cheryl M
authors.initials: CM
authors.lastname: Collins
authors.forename: Samuel
authors.initials: S
authors.lastname: Yui
authors.forename: Charles E S
authors.initials: CE
authors.lastname: Roberts
authors.forename: Igor
authors.initials: I
authors.lastname: Kojic
mesh_terms: D000162:Acoustics; D052157:Aptamers, Nucleotide / Q000737:chemistry*; D001483:Base Sequence; D015374:Biosensing Techniques; D006801:Humans; D007164:Immunosorbents / Q000737:chemistry*; D008969:Molecular Sequence Data; D015203:Reproducibility of Results; D052156:SELEX Aptamer Technique; D012680:Sensitivity and Specificity; D044967:Serum / Q000737:chemistry*; D013917:Thrombin / Q000032:analysis*; D014732:Vibration
chemical_list: D052157:Aptamers, Nucleotide; D007164:Immunosorbents; D013917:Thrombin
keywords: Acoustic Membrane MicroParticle (AMMP); Aptamer; Detection; Diagnostic; SELEX; Thrombin; ViBE