Fluorescently Labeled Markers
Fluorescently Labeled Markers - Related Videos
03:19
Transduction to Label PDX Tumor Cells: Introducing Lentivirus Expressing Fluorescent Marker into the Tumor Cell In Vitro
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2023
The following video describes a technique of transduction to label (patient-derived xenografts) PDX tumor cells, which is used for introducing lentivirus expressing green-fluorescent protein and luciferase reporters into the tumor cell in vitro.
11:12
Fluorescent Labeling of Drosophila Heart Structures
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Cited by 63 •
2009
Here we describe a basic protocol for fluorescent labeling of different elements of heart tubes from larva and adult Drosophila melanogaster. These specimens are well-suited for imaging via fluorescent or confocal microscopy. This technique permits detailed structural analysis of the features of the hearts from a powerful model organism.
03:20
Labeling Neural Cell Surface Markers with Azidosugar while Co-culturing with Endothelial Cells
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2025
This video demonstrates a protocol for co-culturing mouse brain endothelial cells and primary cortical stem cells and labeling the cell surface glycoproteins using Ac4ManNAz (azidosugar per-O-acetylated N-azidoacetylmannosamine). This method allows for selective enrichment and identification of cell surface proteins in primary cells.
04:35
Isolating Fluorescently Labeled Neurons from a Murine Brain
0 Views •
2025
This video demonstrates a method to isolate fluorescently labeled neurons from a mouse brain.
04:46
Immunostaining of Fluorescently Labeled Astrocytes in a Mouse Brain Tissue Section
0 Views •
2025
This video demonstrates the procedure for immunostaining a fixed mouse brain tissue section with fluorescently labeled astrocytes using primary and secondary antibodies and capture the images of the stained astrocytes through confocal microscopy.
FAQs
The fluorophore absorbs energy at an appropriate excitation wavelength and emits light at a longer wavelength. Detecting that emitted light connects the observed signal to the marker’s location, while the targeting component determines which cell, protein, nucleic acid, or structure produces the signal. This separation between excitation and emission enables researchers to visualize selected features within biological samples.
The targeting component provides biological specificity. Its binding or recognition properties determine whether the marker associates with the intended cell, protein, nucleic acid, or structure rather than merely producing nonspecific fluorescence. Matching this component to the feature being studied allows the fluorescent signal to report the location or behavior of a defined biological target.
Fluorescently labeled markers can support measurements of location, abundance, movement, and molecular interactions. A researcher may therefore use the signal to examine where a feature occurs, how much of it is present, whether it changes position, or whether it participates in an interaction. These measurements help connect molecular behavior with cellular organization and biological responses.
A typical workflow begins by selecting a marker whose targeting component recognizes the feature of interest and whose fluorescent compound can be detected with the available system. The marker is then used with fluorescence microscopy, flow cytometry, immunofluorescence, or live-cell imaging. Researchers detect the emitted signal and analyze the resulting location, abundance, movement, or interaction data.
These approaches provide complementary ways to study labeled biological features. Fluorescence microscopy and immunofluorescence support visualization of cellular organization and target location, whereas flow cytometry supports measurements from cells analyzed as a population. Live-cell imaging is suited to following movement and changing events over time. The appropriate method depends on the biological information required.
They allow researchers to connect visible signals with specific biological targets, making complex cellular events easier to measure. Applications include examining cell organization, studying gene expression, investigating disease mechanisms, and evaluating responses to experimental treatments. By tracking target location, abundance, movement, or interactions, these markers help relate molecular changes to broader cellular and biological outcomes.