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Related Experiment Video

Updated: Sep 25, 2025

A Flow Cytometry-Based Cell Surface Protein Binding Assay for Assessing Selectivity and Specificity of an Anticancer Aptamer
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Current Status and Challenges of Aptamers Screening and Optimization.

Yong Tan1,2,3, Lan Ma1,3, Xue Yang1,2,3

  • 1Medical College, China Three Gorges University, Yichang, Hubei, China.

Combinatorial Chemistry & High Throughput Screening
|May 1, 2022
PubMed
Summary

Aptamers are short DNA or RNA molecules with high specificity for targets. Improving aptamer screening and optimization processes can enhance their use as drug carriers and diagnostic tools.

Keywords:
AptamerSELEXantibodiesimmunogenicityoptimizationtruncation

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Area of Science:

  • Biotechnology
  • Molecular Biology
  • Nucleic Acid Chemistry

Background:

  • Aptamers are single-stranded DNA or RNA with specific binding capabilities.
  • They offer high specificity, affinity, low molecular weight, and low immunogenicity.
  • Potential applications include targeted drug delivery, diagnostics, and therapeutics.

Approach:

  • This review analyzes the Systematic Evolution of Ligands by Exponential Enrichment (SELEX) process.
  • Key aspects discussed include initial library design and screening procedures.
  • Optimization strategies post-screening, such as truncation and modification, are also detailed.

Key Points:

  • Efficient aptamer screening requires a well-defined strategy.
  • Analyzing critical SELEX steps helps overcome potential obstacles.
  • Addressing challenges in cell-SELEX, truncation, and modification is crucial.

Conclusions:

  • Aptamers show promise as targeted drug carriers and biosensors.
  • Solving screening and optimization issues will broaden aptamer applications.
  • Further refinement of SELEX technology is essential for clinical translation.