Fluorogenic Reporter
Fluorogenic Reporter - Related Videos
02:42
A Fluorogenic Peptide Cleavage Assay to Screen the Proteolytic Activity of Proteases
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2025
This video demonstrates an assay to screen for the proteolytic activity of proteases using fluorogenic peptides. The protease recognizes its cleavage site on the peptide, cleaving it and separating the quencher from the fluorophore, enabling its fluorescence emission. The fluorescence signal is detected and analyzed to check for the cleavage efficiency of different peptide variants.
13:20
Detection of Bacteria Using Fluorogenic DNAzymes
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Cited by 17 •
2012
We have recently reported a novel approach for generating fluorogenic DNAzyme probes that can be applied to set up a simple, "mix-and-read" fluorescent assay for bacterial detection. These special DNA probes catalyze the cleavage of a chromophore-modified DNA-RNA chimeric substrate in the presence of crude extracellular mixture (CEM) produced by a specific bacterium, thereby translating bacterial detection into fluorescence signal generation. In this report we will describe key experimental...
03:05
Fluorescent Peptide Zymography: A Modified Technique to Detect Protease Activity Using Fluorogenic Substrates in Zymogram Gels
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2025
In this video, we perform zymography, an electrophoretic technique, to analyze the proteolytic activity within biological samples.
03:29
Flow Cytometry Assay to Quantify Oxidative Stress: An Assay to Quantify Reactive Oxygen Species in Intestinal Organoids Using Fluorogenic Probes
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2025
This video demonstrates a flow cytometry assay to quantify the ROS levels in 3D intestinal organoids obtained from GFP-expressing transgenic mice. This method provides an in vitro experimental model to investigate the efficacy of test compounds on ROS production.
01:24
Data Reporting and Recording
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2023
Reporting and recording are crucial in data documentation. The timely, thorough, and accurate documentation of facts is essential when recording patient data. Failure to record findings during an assessment or interpretation of a problem will result in loss of information and make the patient document unreliable. The reader is left with general impressions if the information is not specific. A recording is documenting data of the individual's health information in a traceable, secure, and...
FAQs
Signal generation depends on converting a chemically silent state into a fluorescent state. In an enzyme-responsive design, cleavage removes a masking group from the fluorophore; in another design, a reaction with a target changes the molecule’s structure. Because fluorescence appears after that event, the readout can connect signal intensity with biochemical activity or reveal where the event occurs.
A quenched starting state reduces fluorescence before the target event occurs, creating lower background than a continuously fluorescent signal. When activation releases fluorescence, the change is easier to distinguish spatially and measure quantitatively. This contrast is particularly useful for detecting molecular activity in cells or tissues where unrelated background fluorescence could obscure localized neuronal processes.
The molecular trigger determines the meaning of the signal. If an enzyme cleaves the masking group, increased fluorescence indicates that cleavage activity has occurred. If a target-induced reaction changes the reporter’s structure, the resulting signal can indicate where that molecular interaction or event takes place. Thus, probe design links fluorescence to either activity, localization, or both.
First, select a reporter whose activation mechanism matches the biochemical event being studied, such as enzyme cleavage or a target-induced structural change. The probe is then used in the relevant cells or tissue while fluorescence is monitored after the event occurs. Signal intensity and distribution can subsequently be examined to assess activity or localization with reduced background.
These reporters can be applied to neuronal signaling, enzyme function, and other dynamic molecular events in living cells and tissues. Their value comes from translating events that may otherwise be difficult to visualize into measurable fluorescence. Researchers can therefore examine where such processes occur and how strongly the associated signal appears within neural samples.
Low background increases spatial contrast between activated reporter molecules and regions without the defined biochemical or chemical event. That separation supports clearer localization and more quantitative comparison of fluorescence intensity. In neuroscience, the advantage is important when analyzing signaling, enzyme function, or dynamic molecular activity across living cells and tissues rather than relying on a difficult-to-visualize process directly.