I’m planning to Design and construct an electrochemical aptasensor for detection of methamphetamine but im nat sure abaute aptamer sequence i find my sequence just in one essay .please help me to find exact sequence of aptamer for methamphetamine
Dear Raana,
The following publication may be helpful:
Systematic Evolution of Ligands by Exponential Enrichment Selection of Specific Aptamer for Sensing of Methamphetamine
Article in Sensor Letters 11(3):566-570 · March 2013
DOI: 10.1166/sl.2013.2824
Abstract
Worldwide epidemic addiction to methamphetamine (METH) continues to grow increasingly. Neurotoxicity of METH is very significant, which can irreversibly impact the central nervous system (CNS). However, no effective pharmacotherapy is available to preserve its adverse impacts. Fast and cost-effective sensing/detection of METH may help health system to control its abuse, while such a sensing system is not available yet, mainly due to lack of suitable METH-sensing probe. Aptamers, as DNA/RNA oligonucleotides probes, have successfully been used for sensing/detection of small molecules and macromolecules. Thus, an aptamer specific to METH may favor development of a suitable nanobiosensor for fast and sensitive detection of METH. To select ssDNA aptamer with high binding affinity and specificity to METH, in the current investigation, we screened a synthetic ssDNA library utilizing the systematic evolution of ligands by exponential enrichment (SELEX) technology. Methamphetamine-modified epoxy-activated sepharose 6B was used to extract specific aptamer from a large and diverse random ssDNA initial oligonucleotide library. As a result, several aptamers were selected and further examined for binding affinity and specificity. One of the selected aptamers (aptaMETH) displayed high affinity to the target molecule METH, yielding Kd value at nM range (∼100 nM), that was able to efficiently discriminate METH from similar molec- ular structures (e.g., amphetamine). METH was detected by aptaMETH using an electrochemical impedance spectroscopic sensing method. Our findings show high affinity and specificity of the aptaMETH against methamphetamine, thus we propose it as a suitable probe for development of METH-sensing aptasensors.
https://www.researchgate.net/publication/255913462_Systematic_Evolution_of_Ligands_by_Exponential_Enrichment_Selection_of_Specific_Aptamer_for_Sensing_of_Methamphetamine
Hoping this will be helpful,
Rafik
Article Systematic Evolution of Ligands by Exponential Enrichment Se...
I think it is very easy. Set "aptamer" and "methamphetamine" as keywords and search in Google Scholar, if there anyone has reported the aptamer of methamphetamine, there would be some related results come out.
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