Aptamer-based assay for rapid detection, surveillance, and screening of pathogenic Leptospira in water samples
Abstract Leptospirosis is a potentially fatal waterborne infection caused by Leptospira interrogans, impacting both humans and animals in tropical regions. However, current diagnostic methods for detecting pathogenic Leptospira have sensitivity, cost, and time limitations. Therefore, there is a crit...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-08-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-40120-w |
| _version_ | 1827723218426789888 |
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| author | Archana Vishwakarma Yogesan Meganathan Mohandass Ramya |
| author_facet | Archana Vishwakarma Yogesan Meganathan Mohandass Ramya |
| author_sort | Archana Vishwakarma |
| collection | DOAJ |
| description | Abstract Leptospirosis is a potentially fatal waterborne infection caused by Leptospira interrogans, impacting both humans and animals in tropical regions. However, current diagnostic methods for detecting pathogenic Leptospira have sensitivity, cost, and time limitations. Therefore, there is a critical need for a rapid, sensitive, and cost-effective detection method. This study presents the development of an aptamer-based assay for pathogenic Leptospira detection. Aptamers targeting Leptospira were generated using the SELEX method and screened for binding affinity with major Leptospiral outer membrane proteins through in silico analysis. The aptamer with the highest binding affinity was selected for further evaluation. To enable visual detection, the aptamer was conjugated to gold nanoparticles (AuNPs), resulting in a colorimetric response in the presence of L. interrogans. The aptamer-AuNP-based colorimetric assay exhibited a detection limit of 57 CFU/mL and demonstrated high specificity and reproducibility in detecting pathogenic Leptospira in water samples. This aptamer-based assay represents a significant advancement in leptospirosis diagnostics, offering a rapid, sensitive, and cost-effective approach for detecting pathogenic Leptospira. Its potential for epidemiological applications, such as outbreak source identification and improved prevention, diagnosis, and treatment, particularly in resource-limited settings, highlights its importance in addressing the challenges associated with leptospirosis. |
| first_indexed | 2024-03-10T21:56:16Z |
| format | Article |
| id | doaj.art-2cb761e74b8d440eb00a6464a8712eae |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-10T21:56:16Z |
| publishDate | 2023-08-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-2cb761e74b8d440eb00a6464a8712eae2023-11-19T13:05:47ZengNature PortfolioScientific Reports2045-23222023-08-0113111010.1038/s41598-023-40120-wAptamer-based assay for rapid detection, surveillance, and screening of pathogenic Leptospira in water samplesArchana Vishwakarma0Yogesan Meganathan1Mohandass Ramya2Department of Genetic Engineering, Faculty of Engineering and Technology, School of Bioengineering, SRM Institute of Science and TechnologyDepartment of Genetic Engineering, Faculty of Engineering and Technology, School of Bioengineering, SRM Institute of Science and TechnologyDepartment of Genetic Engineering, Faculty of Engineering and Technology, School of Bioengineering, SRM Institute of Science and TechnologyAbstract Leptospirosis is a potentially fatal waterborne infection caused by Leptospira interrogans, impacting both humans and animals in tropical regions. However, current diagnostic methods for detecting pathogenic Leptospira have sensitivity, cost, and time limitations. Therefore, there is a critical need for a rapid, sensitive, and cost-effective detection method. This study presents the development of an aptamer-based assay for pathogenic Leptospira detection. Aptamers targeting Leptospira were generated using the SELEX method and screened for binding affinity with major Leptospiral outer membrane proteins through in silico analysis. The aptamer with the highest binding affinity was selected for further evaluation. To enable visual detection, the aptamer was conjugated to gold nanoparticles (AuNPs), resulting in a colorimetric response in the presence of L. interrogans. The aptamer-AuNP-based colorimetric assay exhibited a detection limit of 57 CFU/mL and demonstrated high specificity and reproducibility in detecting pathogenic Leptospira in water samples. This aptamer-based assay represents a significant advancement in leptospirosis diagnostics, offering a rapid, sensitive, and cost-effective approach for detecting pathogenic Leptospira. Its potential for epidemiological applications, such as outbreak source identification and improved prevention, diagnosis, and treatment, particularly in resource-limited settings, highlights its importance in addressing the challenges associated with leptospirosis.https://doi.org/10.1038/s41598-023-40120-w |
| spellingShingle | Archana Vishwakarma Yogesan Meganathan Mohandass Ramya Aptamer-based assay for rapid detection, surveillance, and screening of pathogenic Leptospira in water samples Scientific Reports |
| title | Aptamer-based assay for rapid detection, surveillance, and screening of pathogenic Leptospira in water samples |
| title_full | Aptamer-based assay for rapid detection, surveillance, and screening of pathogenic Leptospira in water samples |
| title_fullStr | Aptamer-based assay for rapid detection, surveillance, and screening of pathogenic Leptospira in water samples |
| title_full_unstemmed | Aptamer-based assay for rapid detection, surveillance, and screening of pathogenic Leptospira in water samples |
| title_short | Aptamer-based assay for rapid detection, surveillance, and screening of pathogenic Leptospira in water samples |
| title_sort | aptamer based assay for rapid detection surveillance and screening of pathogenic leptospira in water samples |
| url | https://doi.org/10.1038/s41598-023-40120-w |
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