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A Method for Selecting Structure-switching Aptamers Applied to a Colorimetric Gold Nanoparticle Assay

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A graphene-based sensor array for high-precision and adaptive target identification with ensemble aptamers.

Hao Pei¹, Jiang Li, Min Lv

¹Laboratory of Physical Biology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China.

Journal of the American Chemical Society

|August 2, 2012

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We introduce adaptive ensemble aptamers (ENSaptamers), a novel approach using DNA sequences for precise molecular identification. This method mimics natural senses for pattern recognition, offering a versatile diagnostic and proteomic tool.

Area of Science:

Biotechnology
Molecular Recognition
Nanomaterials

Background:

Traditional aptamers use specific 'lock-and-key' binding.
A need exists for adaptable molecular recognition systems.

Purpose of the Study:

To introduce adaptive ensemble aptamers (ENSaptamers) for discriminative molecular identification.
To develop a highly precise and adaptive diagnostic and proteomic tool.

Main Methods:

Utilized rationally designed, non-specific DNA sequences for collective recognition.
Employed nanographene oxide for a low-background, reproducible fluorescent assay.
Leveraged pattern recognition similar to natural olfactory/gustatory systems.

Main Results:

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Phthalic Acid Ester-Binding DNA Aptamer Selection, Characterization, and Application to an Electrochemical Aptasensor

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Published on: March 21, 2018

Demonstrated highly discriminative identification of diverse molecular and cellular targets.
Showcased the adaptive nature of ENSaptamers for high-precision applications.
Confirmed the potential for a nearly unlimited supply of ENSaptamer receptors.

Conclusions:

ENSaptamers offer a novel paradigm for molecular recognition beyond specific binding.
The nanographene oxide platform enables precise and adaptive target identification.
This technology holds significant promise for advanced diagnostics and proteomics.