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Proceedings Paper

Biosensors for detecting stress in developing embryos
Author(s): Malcolm S. Purdey; Avishkar Saini; Hanna J. McLennan; Benjamin J. Pullen; Erik P. Schartner; Melanie L. Sutton-McDowall; Jeremy G. Thompson; Tanya M. Monro; Stephen J. Nicholls; Andrew D. Abell
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Paper Abstract

Reactive Oxygen Species (ROS) cause DNA damage and defective function in sperm and also affects the developmental competence of embryos. It is therefore critical to monitor ROS in sperm, oocytes and developing embryos. In particular, hydrogen peroxide (H2O2) is a ROS important to normal cell function and signalling as well as its role in oxidative stress. Here we report the development of a fluorescent sensor for H2O2 using carboxyperoxyfluor-1 (CPF1) in solution and attached to a glass slide or multi-mode optical fibre. CPF1 increases in fluorescence upon reaction with H2O2 to non-invasively detect H2O2 near developing embryos. These probes are constructed by immobilising CPF1 to the optical fibre tip a polyacrylamide layer. Also reported is a new dual optical fibre sensor for detecting both H2O2 and pH that is functional at biologically concentrations of H2O2 and can sense pH to 0.1 units. This research shows promise for the use of optical fibre sensors for monitoring the health of developing embryos. Furthermore, these sensors are applicable for use beyond embryos such as detecting stress in endothelial cells involved in cardiovascular dysfunction.

Paper Details

Date Published: 9 December 2016
PDF: 6 pages
Proc. SPIE 10013, SPIE BioPhotonics Australasia, 100130B (9 December 2016); doi: 10.1117/12.2244645
Show Author Affiliations
Malcolm S. Purdey, ARC Ctr. of Excellence in Nanoscale BioPhotonics (Australia)
Univ. of Adelaide (Australia)
South Australian Health and Medical Research Institute (Australia)
Avishkar Saini, ARC Ctr. of Excellence in Nanoscale BioPhotonics (Australia)
Univ. of Adelaide (Australia)
Hanna J. McLennan, ARC Ctr. of Excellence in Nanoscale BioPhotonics (Australia)
Univ. of Adelaide (Australia)
Benjamin J. Pullen, ARC Ctr. of Excellence in Nanoscale BioPhotonics (Australia)
South Australian Health and Medical Research Institute (Australia)
Erik P. Schartner, ARC Ctr. of Excellence in Nanoscale BioPhotonics (Australia)
Univ. of Adelaide (Australia)
Melanie L. Sutton-McDowall, ARC Ctr. of Excellence in Nanoscale BioPhotonics (Australia)
Univ. of Adelaide (Australia)
Jeremy G. Thompson, ARC Ctr. of Excellence in Nanoscale BioPhotonics (Australia)
Univ. of Adelaide (Australia)
Tanya M. Monro, ARC Ctr. of Excellence in Nanoscale BioPhotonics (Australia)
Univ. of South Australia (Australia)
Stephen J. Nicholls, ARC Ctr. of Excellence in Nanoscale BioPhotonics (Australia)
South Australian Health and Medical Research Institute (Australia)
Andrew D. Abell, ARC Ctr. of Excellence in Nanoscale BioPhotonics (Australia)
Univ. of Adelaide (Australia)


Published in SPIE Proceedings Vol. 10013:
SPIE BioPhotonics Australasia
Mark R. Hutchinson; Ewa M. Goldys, Editor(s)

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