Vet World Vol.15 May-2022 Article-3
Research Article
Veterinary World, 15(5): 1171-1176
https://doi.org/10.14202/vetworld.2022.1171-1176
Single-stranded DNA aptamer-based rolling circle amplification as anti-chicken Salmonella bacteriostatic
2. Department of Medical Laboratory Techniques, Kut-Technical Institute, Middle Technical University, Baghdad, Iraq.
Background and Aim: Salmonella is a major foodborne pathogen in the poultry industry, wherein the control measures may include sanitation and antibacterial and vaccines. However, there have been severe global restrictions on using anti-Salmonella antibacterial agents in livestock. This situation, along with rapidly increasing drug-resistant bacterial species, has led to the exploration of unconventional methods to control Salmonella infection in poultry. In recent years, selection techniques of promising DNA aptamers have begun to permeate several medical branches, resulting in the development of numerous anti-Salmonella DNA aptamers, most of which are used as sensing molecules for diagnostic purposes. These DNA aptamers have been demonstrated to interfere with bacterial growth, multiplication, and viability. Aptamers formed in rolling circle amplification products (RCA-p) could improve the potential action of aptamer interference with bacteria. This study aimed to test the use of single-stranded DNA aptamers in the form of RCA-p as a bacteriostatic to Salmonella in vitro.
Materials and Methods: Salmonella Typhimurium and Salmonella Enteritidis isolates were subjected to the action of anti-ST and anti-SE DNA aptamers in the form of RCA-p. Each isolate was grown on MacConkey and Luria-Bertani agar media separately in different concentrations in the presence or absence of the cognate RCA-p.
Results: The anti-Salmonella species DNA aptamer-based RCA-p were capable of reducing bacterial growth to significant levels in vitro.
Conclusion: We describe a potential solution for the rapidly developing drug resistance of several bacterial species. Our findings suggested that the use of non-toxic, non-immunogenic, and low-cost DNA aptamers targeting Salmonella in the form of RCA-p could inhibit the bacterial growth rate. Unlike polymerase chain reaction, RCA yields tandem repeats of single-stranded DNA at isothermal conditions, which would increase the probability of receptor-ligand clustering and increase affinity. Furthermore, as our RCA template was bivalent with two DNA aptamer sequences, we could target multiple sites or antigens on a bacterial cell. Keywords: DNA aptamers, rolling circle amplification, Salmonella.
Keywords: DNA aptamers, rolling circle amplification, Salmonella.
How to cite this article: Hameed SS, Al-Ogaili AS, Noori N (2022) Single-stranded DNA aptamer-based rolling circle amplification as anti-chicken Salmonella bacteriostatic, Veterinary World, 15(5): 1171-1176.
Received: 23-10-2021 Accepted: 21-03-2022 Published online: 11-05-2022
Corresponding author: Samer Sadeq Hameed E-mail: samer.hameed@covm.uobaghdad.edu.iq
DOI: 10.14202/vetworld.2022.1171-1176
Copyright: Hameed, et al. This article is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http:// creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.