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Updated: Oct 12, 2025
ELIME Enzyme Linked Immuno Magnetic Electrochemical Method for Mycotoxin Detection
Published on: October 23, 2009
Key criteria for engineering mycotoxin binding aptamers via computational simulations: Aflatoxin B1 as a case study
Maryam Mousivand1, Kowsar Bagherzadeh2, Laura Anfossi3
1Microbial Biotechnology Department, Agricultural Biotechnology Research Institute of Iran, Agricultural Research, Education and Extension Organization, Department of Plant Protection, College of Agricultural Sciences and Engineering, University of Tehran, Karaj, Iran.
Computational techniques significantly improve aptamer selection for mycotoxin detection. Aptamer F20 shows high affinity and stability for aflatoxin B1 (AFB1) detection, confirmed by molecular dynamics simulations and binding energy analysis.
Area of Science:
- Biotechnology
- Computational Chemistry
- Molecular Biology
Background:
- Monoclonal antibodies face challenges in mycotoxin detection.
- Aptameric probes offer a promising alternative due to their specificity and ease of production.
- Computational methods can enhance the screening efficiency of high-affinity aptamers.
Purpose of the Study:
- To elucidate the binding mechanisms of aflatoxin B1 (AFB1) aptamers using computational approaches.
- To identify critical nucleic acid bases and energy contributions in AFB1-aptamer interactions.
- To validate computational findings with experimental data for aptamer-based mycotoxin detection.
Main Methods:
- Integrated molecular dynamics (MDs) simulations and molecular mechanics Poisson-Boltzmann surface area (MM-PBSA) analysis.
- In silico maturation using a genetic algorithm to design novel aptamers.
- Experimental measurement of aptamer-toxin binding affinities.
Main Results:
- Aptamer F20 exhibited superior binding energy and complex stability for AFB1.
- AFB1 binds to F20 via groove binding, demonstrating precise shape complementarity.
- Dynamic water interactions and van der Waals forces are key contributors to complex stability.
Conclusions:
- Computational simulations accurately predict aptamer-AFB1 binding modes and affinities.
- Aptamer F20 is a highly functional probe for AFB1 detection.
- Integrated computational and experimental approaches are crucial for discovering effective aptameric probes.
