Fluorophore Combinations
Fluorophore Combinations - Related Videos
14:11
Synthesis of pH Dependent Pyrazole, Imidazole, and Isoindolone Dipyrrinone Fluorophores using a Claisen-Schmidt Condensation Approach
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2021
The Claisen-Schmidt condensation reaction is an important methodology for the generation of methine-bridged conjugated bicyclic aromatic compounds. Through utilizing a base-mediated variant of the aldol reaction, a range of fluorescent and/or biologically relevant molecules can be accessed through a generally inexpensive and operationally simple synthetic approach.
09:46
Qualitative Identification of Carboxylic Acids, Boronic Acids, and Amines Using Cruciform Fluorophores
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2013
Cross-conjugated cruciform fluorophores based on 1,4-distyryl-2,5-bis(arylethynyl)benzene and benzobisoxazole nuclei can be used to qualitatively identify diverse Lewis acidic and Lewis basic analytes. This method relies on the differences in emission colors of the cruciforms that are observed upon analyte addition. Structurally closely related species can be distinguished from each other.
07:45
Estimation of Urinary Nanocrystals in Humans using Calcium Fluorophore Labeling and Nanoparticle Tracking Analysis
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Cited by 4 •
2021
The objective of this study was to determine whether nanoparticle tracking analysis (NTA) could detect and quantify urinary calcium containing nanocrystals from healthy adults. The findings from the current study suggest NTA could be a potential tool to estimate urinary nanocrystals during kidney stone disease.
07:31
Measuring the pH, Redox Chemistries, and Degradative Capacity of Macropinosomes using Dual-Fluorophore Ratiometric Microscopy
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Cited by 1 •
2021
We describe protocols for measuring pH, oxidative events, and protein digestion in individual macropinosomes in live cells. An emphasis is placed on dual-fluorophore ratiometric microscopy and the advantages it offers over population-based techniques.
10:55
Fluorescence-quenching of a Liposomal-encapsulated Near-infrared Fluorophore as a Tool for In Vivo Optical Imaging
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Cited by 15 •
2015
The use of fluorophores for in vivo imaging can be greatly limited by opsonization, rapid clearance, low detection sensitivity and cytotoxic effects on the host. Encapsulation of fluorophores in liposomes by film hydration and extrusion leads to fluorescence quenching and protection which enables in vivo imaging with high detection sensitivity.
FAQs
When fluorophores emit within overlapping wavelength ranges, a detector may receive signal from more than one label. Without correction, fluorescence assigned to one marker can partly reflect another marker, reducing confidence in multiparameter measurements. Compensation or spectral unmixing separates these contributions computationally or analytically, helping researchers distinguish immune-cell markers, cytokines, and pathogen-associated signals more accurately.
A fluorophore combination must match the capabilities of the flow cytometer or fluorescence microscope used for measurement. Researchers consider the available filters and the instrument’s ability to distinguish emitted wavelengths before assigning labels to targets. This planning reduces spectral spillover and supports reliable separation of signals across complex immunological or infection-related samples.
Panel design determines how many cellular or microbial features can be measured together and how clearly those features can be resolved. Selecting compatible labels for immune markers, activation or cytokine signals, and pathogen-associated targets enables multiparameter analysis in the same sample. The resulting data can reveal relationships between host responses and infection-associated signals.
The same labeling strategy can support either flow cytometry or fluorescence microscopy, but the measurement context differs. Flow cytometry uses the combination to characterize markers across analyzed cells, whereas microscopy uses fluorescence to visualize labeled targets in the sample. In both settings, compatible filters and correction for overlapping signals remain important for accurate interpretation.
Planning begins by identifying the cellular markers or microbial targets to measure, then assigning antibody-conjugated fluorophores with distinguishable emission characteristics. Researchers next check compatibility with the instrument’s filters and account for spectral overlap through compensation or spectral unmixing. This workflow produces a panel suited to simultaneous detection and improves resolution during multiparameter analysis.
They are useful when researchers need to examine several features of an immunological sample at once. Applications described for this approach include identifying immune-cell populations, measuring activation or cytokine expression, and tracking pathogen-associated markers. Combining these readouts supports investigation of complex host-pathogen interactions rather than restricting analysis to a single cellular or microbial signal.