Title |
[Protocol] Development of DNA aptamers specific for small therapeutic peptides using a modified SELEX method |
Author |
Jaemin Lee1, Minkyung Ryu1,2, Dayeong Bae1,2, Hong-Man Kim1,2, Seong-il Eyun1, Jeehyeon Bae2,3*, and Kangseok Lee1,2* |
Address |
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 Korea |
Bibliography |
Journal of Microbiology, 60(7),659-667, 2022,
|
DOI |
10.1007/s12275-022-2235-4
|
Key Words |
aptamer, antimicrobial peptide, multidrug-resistant
bacteria, SELEX, magnetic beads, next-generation sequencing |
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. |