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SELEX tool: a novel and convenient gel-based diffusion method for monitoring of aptamer-target binding
- Source :
- Journal of Biological Engineering, Vol 14, Iss 1, Pp 1-13 (2020), Journal of Biological Engineering
- Publication Year :
- 2020
- Publisher :
- BMC, 2020.
-
Abstract
- Background Aptamers, single-stranded DNAs or RNAs, can be selected from a library containing random sequences using a method called Systematic Evolution of Ligands by EXponential Enrichment (SELEX). In SELEX, monitoring the enriching statuses of aptamer candidates during the process is a key step until today. Conformational change of an aptamer caused by target-binding in gel can be used to indicate its statuses of binding. Results In this study, an easy-to-implement gel-based diffusion method (GBDM) was developed to monitor the interaction between enriched aptamer candidates and their targets. In order to prove the concept, characterization of aptamers targeting their targets including protein (thrombin) and non-protein molecules (acetamiprid, ATP, atrazine, profenofos and roxithromycin), respectively, were performed using mini gels. Our method has advantages over the common methods including easy performed with labor- and time- saving in experimental operation. The concept has been proven by monitoring enrichment of dynamic aptamer candidate libraries targeting a small molecule 2,2-bis(4-chlorophenyl) acetic acid (DDA) during SELEX process. A mini gel cassette was designed and fabricated by our laboratory to make mini agarose gels for diffusion with different directions. Conclusions These results indicate that GBDM, in particular, chasing diffusion is suitable for monitoring the interaction between enriched aptamer candidates and their targets. These pioneering efforts are helpful for novel aptamer selection by breaking through the technical bottleneck of aptamer development and helpful for development of novel aptasensors.
- Subjects :
- 0301 basic medicine
Environmental Engineering
Aptamer
Interaction
Biomedical Engineering
Profenofos
02 engineering and technology
Computational biology
Gel based
Diffusion
03 medical and health sciences
chemistry.chemical_compound
Molecular Biology
lcsh:QH301-705.5
Visualization
Research
Aptasensor
Cell Biology
Monitor
021001 nanoscience & nanotechnology
Small molecule
030104 developmental biology
Nucleic acid chemistry
chemistry
lcsh:Biology (General)
Agarose
0210 nano-technology
Target binding
Systematic evolution of ligands by exponential enrichment
Subjects
Details
- Language :
- English
- ISSN :
- 17541611
- Volume :
- 14
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Journal of Biological Engineering
- Accession number :
- edsair.doi.dedup.....b1359e761c27797cb0ff0f04e607b266