Ex Vivo Tracer Efficacy in Optical Imaging of Staphylococcus Aureus Nuclease Activity

Abstract The key to effective treatment of bacterial infections is a swift and reliable diagnosis. Current clinical standards of bacterial diagnosis are slow and laborious. There are several anatomical imaging modalities that can detect inflammation, but none can distinguish between bacterial and st...

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Autores principales:	Colin W. K. Rosman, Francisco Romero Pastrana, Girbe Buist, Marjolein Heuker, Marleen van Oosten, James O. McNamara, Gooitzen M. van Dam, Jan Maarten van Dijl
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3e4436b1ed98469994c29d6d5c4271b4
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spelling	oai:doaj.org-article:3e4436b1ed98469994c29d6d5c4271b42021-12-02T15:08:18ZEx Vivo Tracer Efficacy in Optical Imaging of Staphylococcus Aureus Nuclease Activity10.1038/s41598-018-19289-y2045-2322https://doaj.org/article/3e4436b1ed98469994c29d6d5c4271b42018-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-19289-yhttps://doaj.org/toc/2045-2322Abstract The key to effective treatment of bacterial infections is a swift and reliable diagnosis. Current clinical standards of bacterial diagnosis are slow and laborious. There are several anatomical imaging modalities that can detect inflammation, but none can distinguish between bacterial and sterile inflammation. Novel tracers such as smart activatable fluorescent probes represent a promising development that allow fast and specific testing without the use of ionizing radiation. Previously, a smart activatable probe was developed that is a substrate for the micrococcal nuclease as produced by Staphylococcus aureus. In the present study, the function of this probe was validated. Practical applicability in terms of sensitivity was assessed by incubation of the probe with 26 clinical S. aureus isolates, and probe specificity was verified by incubation with 30 clinical isolates and laboratory strains of various bacterial pathogens. The results show that the nuclease-specific probe was activated by all tested S. aureus isolates and laboratory strains with a threshold of ~106–107 cells/mL. The probe was also activated by certain opportunistic staphylococci. We therefore propose that the studied nuclease probe represents a significant step forward to address the need for a rapid, practical, and precise method to detect infections caused by S. aureus.Colin W. K. RosmanFrancisco Romero PastranaGirbe BuistMarjolein HeukerMarleen van OostenJames O. McNamaraGooitzen M. van DamJan Maarten van DijlNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-8 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Colin W. K. Rosman Francisco Romero Pastrana Girbe Buist Marjolein Heuker Marleen van Oosten James O. McNamara Gooitzen M. van Dam Jan Maarten van Dijl Ex Vivo Tracer Efficacy in Optical Imaging of Staphylococcus Aureus Nuclease Activity
description	Abstract The key to effective treatment of bacterial infections is a swift and reliable diagnosis. Current clinical standards of bacterial diagnosis are slow and laborious. There are several anatomical imaging modalities that can detect inflammation, but none can distinguish between bacterial and sterile inflammation. Novel tracers such as smart activatable fluorescent probes represent a promising development that allow fast and specific testing without the use of ionizing radiation. Previously, a smart activatable probe was developed that is a substrate for the micrococcal nuclease as produced by Staphylococcus aureus. In the present study, the function of this probe was validated. Practical applicability in terms of sensitivity was assessed by incubation of the probe with 26 clinical S. aureus isolates, and probe specificity was verified by incubation with 30 clinical isolates and laboratory strains of various bacterial pathogens. The results show that the nuclease-specific probe was activated by all tested S. aureus isolates and laboratory strains with a threshold of ~106–107 cells/mL. The probe was also activated by certain opportunistic staphylococci. We therefore propose that the studied nuclease probe represents a significant step forward to address the need for a rapid, practical, and precise method to detect infections caused by S. aureus.
format	article
author	Colin W. K. Rosman Francisco Romero Pastrana Girbe Buist Marjolein Heuker Marleen van Oosten James O. McNamara Gooitzen M. van Dam Jan Maarten van Dijl
author_facet	Colin W. K. Rosman Francisco Romero Pastrana Girbe Buist Marjolein Heuker Marleen van Oosten James O. McNamara Gooitzen M. van Dam Jan Maarten van Dijl
author_sort	Colin W. K. Rosman
title	Ex Vivo Tracer Efficacy in Optical Imaging of Staphylococcus Aureus Nuclease Activity
title_short	Ex Vivo Tracer Efficacy in Optical Imaging of Staphylococcus Aureus Nuclease Activity
title_full	Ex Vivo Tracer Efficacy in Optical Imaging of Staphylococcus Aureus Nuclease Activity
title_fullStr	Ex Vivo Tracer Efficacy in Optical Imaging of Staphylococcus Aureus Nuclease Activity
title_full_unstemmed	Ex Vivo Tracer Efficacy in Optical Imaging of Staphylococcus Aureus Nuclease Activity
title_sort	ex vivo tracer efficacy in optical imaging of staphylococcus aureus nuclease activity
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/3e4436b1ed98469994c29d6d5c4271b4
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Ex Vivo Tracer Efficacy in Optical Imaging of Staphylococcus Aureus Nuclease Activity

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