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A near-infrared optical nanosensor for measuring aerobic respiration in microbial systems

Journal Article · · Analyst
DOI:https://doi.org/10.1039/d1an01855h· OSTI ID:1982184

We developed a ratiometric oxygen-sensitive nanosensor and demonstrated application in monitoring metabolic oxygen consumption in microbial samples over time. Based on a near-infrared (NIR) emitting oxygen-quenched luminophore, platinum(II) octaethylporphine ketone (PtOEPK), along with a stable dioctadecyl dicarbocyanine reference dye (DiD), this nanosensor system provides an advantageous approach for overcoming imaging issues in biological systems, such as autofluorescence and optical scattering in the visible wavelength region. The dyes are encapsulated within a polymer-based nanoparticle matrix to maintain them at a constant ratio in biological samples, precluding the need for complex synthetic approaches. With this constant ratio of the two dyes, the nanosensor response can be measured as a ratio of their two signals, accounting for nanosensor concentration artifacts in measurements. The nanosensors are reversible, which enabled us to temporally monitor systems in which dissolved oxygen concentrations both increase and decrease. These sensors were applied for the monitoring of oxygen in samples of Saccharomyces cerevisiae (brewing yeast) in a 96-well optical fluorescence plate reader format over 60 h. By mixing the nanosensors directly into the sample well with the yeast, we were able to dynamically track metabolic activity changes over time due to varying cell concentration and exposure to an antimicrobial agent. As a result, this system could be a potential platform for high-throughput screening of various species or variants of microbes with unknown metabolic rates in response to external stimuli (antimicrobials, metabolites, etc.).

Research Organization:
US Department of Energy (USDOE), Washington, DC (United States). Office of Science, Biological and Environmental Research (BER)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
OSTI ID:
1982184
Alternate ID(s):
OSTI ID: 1833740
Journal Information:
Analyst, Journal Name: Analyst Journal Issue: 1 Vol. 147; ISSN 0003-2654
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English

References (49)

Tracking Cancer Metastasis In Vivo by Using an Iridium-Based Hypoxia-Activated Optical Oxygen Nanosensor journal June 2015
Luminescent sensing and imaging of oxygen: Fierce competition to the Clark electrode journal June 2015
On the Design of Fluorescent Ratiometric Nanosensors journal July 2010
Probes and Polymers for Optical Sensing of Oxygen journal September 2003
Nanoparticle- and microparticle-based luminescence imaging of chemical species and temperature in aquatic systems: a review journal January 2019
Oxidative stress in fungal fermentation processes: the roles of alternative respiration journal November 2010
Perspective of dye-encapsulated conjugated polymer nanoparticles for potential applications journal September 2018
Indicators for optical oxygen sensors journal November 2012
Dil and DiO: versatile fluorescent dyes for neuronal labelling and pathway tracing journal January 1989
Longwave luminescent porphyrin probes journal November 1996
New oxygen sensors and their application to biosensing journal October 1995
Response characteristics of luminescent oxygen sensors journal October 1995
In vivo near-infrared fluorescence imaging journal October 2003
Phosphorescence based O 2 sensors – Essential tools for monitoring cell and tissue oxygenation and its impact on metabolism journal December 2016
Microbial potentiometric sensor: A new approach to longstanding challenges journal November 2020
A review of chemosensors and biosensors for monitoring biofilm dynamics journal November 2021
Recent Progress in Small-Molecule Near-IR Probes for Bioimaging journal May 2019
Methods for assessing biochemical oxygen demand (BOD): A review journal February 2014
Phosphorescent Complexes of Porphyrin Ketones: Optical Properties and Application to Oxygen Sensing journal November 1995
Near Infrared Luminescent Oxygen Nanosensors with Nanoparticle Matrix Tailored Sensitivity journal September 2010
Phosphorescent Nanosensors for in Vivo Tracking of Histamine Levels journal June 2013
Simultaneous Determination of Oxygen and pH Inside Microfluidic Devices Using Core–Shell Nanosensors journal September 2016
Luminescent Silica Nanosensors for Lifetime Based Imaging of Intracellular Oxygen with Millisecond Time Resolution journal October 2019
Near-IR Fluorescent Tracer for Glucose-Uptake Monitoring in Live Cells journal September 2018
Design and Application of an Optical Sensor for Simultaneous Imaging of pH and Dissolved O 2 with Low Cross-Talk journal April 2016
Highly Stable and Luminescent Oxygen Nanosensor Based on Ruthenium-Containing Metallopolymer for Real-Time Imaging of Intracellular Oxygenation journal March 2019
Quenching of fluorescence by oxygen. Probe for structural fluctuations in macromolecules journal October 1973
Amperometric Gas Sensors - A Review journal February 2008
Ultra-Small, Highly Stable, and Sensitive Dual Nanosensors for Imaging Intracellular Oxygen and pH in Cytosol journal October 2012
Fluorescent Ion-Selective Nanosensors for Intracellular Analysis with Improved Lifetime and Size journal May 2007
Optical Drug Monitoring: Photoacoustic Imaging of Nanosensors to Monitor Therapeutic Lithium in Vivo journal January 2015
Near-infrared optical sensors based on single-walled carbon nanotubes journal December 2004
Wide range zero-thermal-quenching ultralong phosphorescence from zero-dimensional metal halide hybrids journal September 2020
Fibre optic oxygen sensor based on fluorescence quenching of evanescent-wave excited ruthenium complexes in sol–gel derived porous coatings journal January 1993
Optical methods for sensing and imaging oxygen: materials, spectroscopies and applications journal January 2014
Rational design of polymeric core shell ratiometric oxygen-sensing nanostructures journal January 2017
Microsensor systems for cell metabolism – from 2D culture to organ-on-chip journal January 2018
Nanodiagnostics to monitor biofilm oxygen metabolism for antibiotic susceptibility testing journal January 2020
Flexible thread-based electrochemical sensors for oxygen monitoring journal January 2021
Ru( ii )/BODIPY core co-encapsulated ratiometric nanotools for intracellular O 2 sensing in live cancer cells journal January 2021
Determination of Oxygen Diffusion Coefficient in Wastewaters journal March 1998
Visualizing sodium dynamics in isolated cardiomyocytes using fluorescent nanosensors journal September 2009
Near-infrared fluorescent sensor for in vivo copper imaging in a murine Wilson disease model journal January 2012
Luminescent Nanosensors for Ratiometric Monitoring of Three-Dimensional Oxygen Gradients in Laboratory and Clinical Pseudomonas aeruginosa Biofilms journal October 2019
In vivo Near-infrared Fluorescence Tumor Imaging Using DiR-loaded Nanocarriers journal March 2016
Traditional Norwegian Kveik Are a Genetically Distinct Group of Domesticated Saccharomyces cerevisiae Brewing Yeasts journal September 2018
A Review of Methods to Determine Viability, Vitality, and Metabolic Rates in Microbiology journal November 2020
Response to Sulfur Dioxide Addition by Two Commercial Saccharomyces cerevisiae Strains journal July 2019
Factors Affecting Death of Yeast by Sulfur Dioxide1 journal February 1981

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