2007
DOI: 10.1007/s00216-007-1643-y
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Aptamers as molecular recognition elements for electrical nanobiosensors

Abstract: Recent advances in nanotechnology have enabled the development of nanoscale sensors that outperform conventional biosensors. This review summarizes the nanoscale biosensors that use aptamers as molecular recognition elements. The advantages of aptamers over antibodies as sensors are highlighted. These advantages are especially apparent with electrical sensors such as electrochemical sensors or those using field-effect transistors.

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Cited by 213 publications
(162 citation statements)
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“…The greatest advantage of using aptamers instead of antibodies is their small size (approximately 1-2 nm), a property that makes them shorter than the Debye length. Therefore, the biorecognition event between the target analyte and the aptamer may occur within the electrical double layer, even in physiological solutions of high ionic strength, resulting in improved sensitivity and a broader range of analytes [134].…”
Section: Aptamers Instead Of Antibodiesmentioning
confidence: 99%
“…The greatest advantage of using aptamers instead of antibodies is their small size (approximately 1-2 nm), a property that makes them shorter than the Debye length. Therefore, the biorecognition event between the target analyte and the aptamer may occur within the electrical double layer, even in physiological solutions of high ionic strength, resulting in improved sensitivity and a broader range of analytes [134].…”
Section: Aptamers Instead Of Antibodiesmentioning
confidence: 99%
“…Conforme apresentado na figura 1, os sensores são construídos a partir de um componente que introduz a amostra, um sistema de reconhecimento molecular, um transdutor e uma unidade processadora de sinal (LEE et al, 2008).…”
Section: Estrutura De Um Sensor Bioeletrônicounclassified
“…No sistema de reconhecimento está a parte que entra em contato com o analito de interesse e produz um sinal. Pode ser um receptor, enzima, anticorpo, ácido nucléico entre outros (PATHAK et al, 2007;CHAMBERS et al, 2008;LEE et al, 2008).…”
Section: Estrutura De Um Sensor Bioeletrônicounclassified
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“…[8][9][10][11][12][13][14][15][16][17][18] Among these sensing technologies, electrochemical aptasensors have attracted particular attention because they provide a simple, sensitive, and selective platform for thrombin detection. A SPR spectroscopic aptasensor allows use of a microsecond time-resolved change of SPR reflectance.…”
Section: -7mentioning
confidence: 99%