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Primer-Free Aptamer Selection Using A Random DNA Library
Published on: July 26, 2010
Aptamer screening within sample matrices: Toward reliable applications
Chao Zhu1, Yichun Zhang1, Yunxiang Li1
1Institute of Agricultural Products Quality Safety and Standards, Shandong Academy of Agricultural Sciences, Jinan 250100, China.
Biotechnology Advances
|July 30, 2026
Summary
Systematic Evolution of Ligands by EXponential enrichment (SELEX) generates aptamers, but real-world applications face challenges from sample matrices. Matrix-integrated SELEX strategies are emerging to improve aptamer robustness and applicability in diverse fields.
Area of Science:
- Biotechnology
- Molecular Biology
- Chemical Biology
Background:
- Nucleic acid aptamers, selected via SELEX, function as
- chemical antibodies
- with high target affinity and specificity.
- SELEX has been the primary method for aptamer generation for over 35 years, with continuous improvements.
- Aptamers have potential applications in food safety, diagnostics, and drug delivery.
Purpose of the Study:
- To review recent advancements in matrix-integrated SELEX strategies.
- To discuss the potential of these strategies for enhancing aptamer robustness and applicability.
- To analyze mechanisms, outcomes, and applications of different matrix-integrated SELEX approaches.
Main Methods:
- Systematic review of literature on matrix-integrated SELEX.
- Analysis of matrix-spiked selection, matrix-based negative selection, and holistic matrix selection.
- Overview of aptamer biology, SELEX evolution, and post-SELEX optimization.
Main Results:
- Matrix-integrated SELEX strategies incorporate sample environments into aptamer selection.
- These methods aim to overcome challenges posed by complex sample matrices.
- Applications include environmental adaptation, interference suppression, and biomarker discovery.
Conclusions:
- Matrix-integrated SELEX shows promise for improving aptamer performance in real-world samples.
- Further research is needed to address technical and conceptual challenges.
- Future directions focus on developing more robust, efficient, and application-oriented aptamer screening platforms.
