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DNA Microarrays

DNA Microarrays

Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...

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Related Experiment Video

Updated: Jun 10, 2026

Aptamer-Based Target Detection Facilitated by a 3-Stage G-Quadruplex Isothermal Exponential Amplification Reaction

Aptamer-Based Target Detection Facilitated by a 3-Stage G-Quadruplex Isothermal Exponential Amplification Reaction

Published on: October 6, 2022

Aptamer-based molecular recognition for biosensor development.

Jing Zhou¹, Mark R Battig, Yong Wang

¹Department of Chemical, Materials and Biomolecular Engineering, University of Connecticut, 191 Auditorium Road, Storrs, CT 06269-3222, USA.

Analytical and Bioanalytical Chemistry

|July 21, 2010

Summary

Nucleic acid aptamers are versatile synthetic ligands for biosensor development. Their high specificity, affinity, and stability make them ideal for detecting various molecules in diverse conditions.

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Area of Science:

Biotechnology and Molecular Biology
Biosensor Technology
Synthetic Biology

Background:

Nucleic acid aptamers are synthetic ligands gaining prominence in various scientific fields.
Their ability to recognize specific molecules with high affinity and specificity is a key attribute.
Aptamers exhibit superior tolerance to harsh conditions compared to natural ligands.

Purpose of the Study:

To review methods for aptamer discovery, including selection and truncation techniques.
To discuss the development of aptamer-based biosensors, focusing on signal generation strategies.
To highlight the potential of aptamers in advancing biosensing applications.

Main Methods:

Overview of aptamer discovery methodologies (upstream selection, downstream truncation).
Discussion of signal transduction mechanisms in aptamer biosensors.
Analysis of aptamer characteristics relevant to biosensing.

Main Results:

Aptamers can be discovered for virtually any target molecule with high specificity and affinity.
Synthetic aptamers demonstrate remarkable stability under various environmental conditions.
Various signal production strategies can be employed in aptamer-based biosensors.

Conclusions:

Nucleic acid aptamers are highly promising molecular recognition elements for biosensor design.
Their unique properties facilitate the development of robust and sensitive biosensing platforms.
Further research into aptamer discovery and biosensor integration will drive innovation in diagnostics and monitoring.