[Protocol] Development of DNA aptamers specific for small therapeutic peptides using a modified SELEX method

Jaemin Lee; Minkyung Ryu; Dayeong Bae; Hong-Man Kim; Seong-il Eyun; Jeehyeon Bae; Kangseok Lee

doi:10.1007/s12275-022-2235-4

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[Protocol] Development of DNA aptamers specific for small therapeutic peptides using a modified SELEX method: Jaemin Lee ¹, Minkyung Ryu ^1,2, Dayeong Bae ^1,2, Hong-Man Kim ^1,2, Seong-il Eyun ¹, Jeehyeon Bae ^2,3, Kangseok Lee ^1,2; Journal of Microbiology 2022;60(7):659-667.
DOI: https://doi.org/10.1007/s12275-022-2235-4
Published online: June 22, 2022

¹Department of Life Science, Chung-Ang University, Seoul 06974, Republic of Korea, ²NES biotechnology, Seoul 06974, Republic of Korea, ³Department of Pharmacy, Chung-Ang University, Seoul 06974, Republic of Korea¹Department of Life Science, Chung-Ang University, Seoul 06974, Republic of Korea, ²NES biotechnology, Seoul 06974, Republic of Korea, ³Department of Pharmacy, Chung-Ang University, Seoul 06974, Republic of Korea

Corresponding author: Jeehyeon Bae , Tel: +82-2-820-5241,
Kangseok Lee , Tel: +82-2-820-5241,

Received: 26 May 2022 • Accepted: 27 May 2022

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Abstract

Aptamers are short single-stranded DNA or RNA oligonucleotides capable of binding with high affinity and specificity to target molecules. Because of their durability and ease of synthesis, aptamers are used in a wide range of biomedical fields, including the diagnosis of diseases and targeted delivery of therapeutic agents. The aptamers were selected using a process called systematic evolution of ligands by exponential enrichment (SELEX), which has been improved for various research purposes since its development in 1990. In this protocol, we describe a modified SELEX method that rapidly produces high aptamer screening yields using two types of magnetic beads. Using this method, we isolated an aptamer that specifically binds to an antimicrobial peptide. We suggest that by conjugating a small therapeutic-specific aptamer to a gold nanoparticle-based delivery system, which enhances the stability and intracellular delivery of peptides, aptamers selected by our method can be used for the development of therapeutic agents utilizing small therapeutic peptides.

Keywords: Lentibacillus cibarius;halophilic bacterium;kimchi;polyphasic taxonomy

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[Protocol] Development of DNA aptamers specific for small therapeutic peptides using a modified SELEX method

J. Microbiol. 2022;60(7):659-667. Published online June 22, 2022

DOI: https://doi.org/10.1007/s12275-022-2235-4

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