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Selection of Single-Stranded DNA Molecular Recognition Elements against Exotoxin A Using a Novel Decoy-SELEX Method and Sensitive Detection of Exotoxin A in Human Serum
Joint Authors
Williams, Ryan M.
Battistella, Louisa
Sooter, Letha J.
Hong, Ka Lok
Yancey, Kailey
Hickey, Katherine M.
Bostick, Chris D.
Gannett, Peter M.
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-11-09
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
Exotoxin A is one of the virulence factors of Pseudomonas aeruginosa, a bacterium that can cause infections resulting in adverse health outcomes and increased burden to health care systems.
Current methods of diagnosing P.
aeruginosa infections are time consuming and can require significant preparation of patient samples.
This study utilized a novel variation of the Systematic Evolution of Ligand by Exponential Enrichment, Decoy-SELEX, to identify an Exotoxin A specific single-stranded DNA (ssDNA) molecular recognition element (MRE).
Its emphasis is on increasing stringency in directing binding toward free target of interest and at the same time decreasing binding toward negative targets.
A ssDNA MRE with specificity and affinity was identified after fourteen rounds of Decoy-SELEX.
Utilizing surface plasmon resonance measurements, the determined equilibrium dissociation constant ( K d ) of the MRE is between 4.2 µM and 4.5 µM, and is highly selective for Exotoxin A over negative targets.
A ssDNA MRE modified sandwich enzyme-linked immunosorbent assay (ELISA) has been developed and achieved sensitive detection of Exotoxin A at nanomolar concentrations in human serum.
This study has demonstrated the proof-of-principle of using a ssDNA MRE as a clinical diagnostic tool.
American Psychological Association (APA)
Hong, Ka Lok& Yancey, Kailey& Battistella, Louisa& Williams, Ryan M.& Hickey, Katherine M.& Bostick, Chris D.…[et al.]. 2015. Selection of Single-Stranded DNA Molecular Recognition Elements against Exotoxin A Using a Novel Decoy-SELEX Method and Sensitive Detection of Exotoxin A in Human Serum. BioMed Research International،Vol. 2015, no. 2015, pp.1-12.
https://search.emarefa.net/detail/BIM-1055411
Modern Language Association (MLA)
Hong, Ka Lok…[et al.]. Selection of Single-Stranded DNA Molecular Recognition Elements against Exotoxin A Using a Novel Decoy-SELEX Method and Sensitive Detection of Exotoxin A in Human Serum. BioMed Research International No. 2015 (2015), pp.1-12.
https://search.emarefa.net/detail/BIM-1055411
American Medical Association (AMA)
Hong, Ka Lok& Yancey, Kailey& Battistella, Louisa& Williams, Ryan M.& Hickey, Katherine M.& Bostick, Chris D.…[et al.]. Selection of Single-Stranded DNA Molecular Recognition Elements against Exotoxin A Using a Novel Decoy-SELEX Method and Sensitive Detection of Exotoxin A in Human Serum. BioMed Research International. 2015. Vol. 2015, no. 2015, pp.1-12.
https://search.emarefa.net/detail/BIM-1055411
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1055411