Fluorescent Muscle Markers
Fluorescent Muscle Markers - Related Videos
08:15
Tracking Dynamics of Muscle Engraftment in Small Animals by In Vivo Fluorescent Imaging
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Cited by 4 •
2009
We describe an in vivo fluorescence imaging protocol to monitor muscle regeneration by GFP-labeled myoblasts after transplantation into skeletal muscles of both healthy and dystrophic mice. This protocol can be adapted to study muscle regeneration by transplantation of other types of cells and in other muscular conditions as well.
14:18
Fluorescence-based Measurement of Store-operated Calcium Entry in Live Cells: from Cultured Cancer Cell to Skeletal Muscle Fiber
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Cited by 19 •
2012
The extent of store-operated Ca2+ entry (SOCE) can be monitored using fluorescent Ca2+ indicators. Mn2+ quenching of such indicators assays SOCE in cultured cells and skeletal muscle fibers. A technique allowing spatial and temporal resolution of SOCE by confocal imaging of mechanically skinned muscle fibers is also described.
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.
03:26
Measuring Compound Muscle Action Potentials in Mouse Forelimb Muscles In Vivo
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2025
This video demonstrates an in vivo technique for measuring compound muscle action potential (CMAP) in mice. It outlines the steps for setting up electrodes, stimulating forelimb neurons that innervate muscle fibers, and recording muscle responses. The technique assesses neuronal demyelination and functional neuron loss.
02:25
C. elegans Muscle Area Measurements: A Standardized Method to Quantify Striated Muscle Morphology
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2023
C. elegans have two types of muscles, single sarcomere and multiple sarcomere, or striated muscles. This video describes the arrangement of the striated body wall muscles, which are responsible for a worm’s locomotion and includes a sample protocol to measure muscle morphology using image analysis software.
FAQs
Fluorescent muscle markers can report different biological features depending on how they are designed. A fluorophore-conjugated antibody reveals the position of a selected muscle-associated protein, whereas a genetically encoded fluorescent protein reports expression driven by a muscle-specific regulatory sequence. This distinction helps investigators separate protein distribution from regulatory activity during development.
Muscle-specific regulatory sequences are important because they restrict fluorescent protein production to cells or developmental stages with the corresponding regulatory activity. As development proceeds, the resulting pattern can show where muscle-related programs are active, rather than merely where a protein has accumulated. This makes the markers useful for following lineage progression and tissue patterning.
Marker location and intensity provide complementary measurements. Location indicates which cells, fibers, or tissue regions contain the selected signal, while intensity can be quantified to compare relative changes across developmental conditions. Interpreted together, these measurements can identify altered gene expression, shifts in tissue patterning, or developmental defects rather than relying only on whether fluorescence is present.
An investigation typically begins by selecting a marker whose target matches the developmental question, followed by labeling with a conjugated antibody or using a genetically encoded fluorescent construct under a muscle-specific regulatory sequence. Samples are then examined with fluorescence microscopy, and signal location or intensity is quantified. The workflow links visual patterns to differentiation, migration, or fiber organization.
These markers are useful in both model organisms and cultured systems, allowing developmental observations in complementary settings. In a model organism, fluorescence can reveal muscle-cell positioning and tissue patterning within the developing context. In culture, researchers can examine differentiation and changes in muscle-associated signals under an experimental system, supporting comparisons among developmental states.
In developmental biology, the principal outcomes include identifying muscle progenitors, tracking differentiation and migration, and visualizing how fibers become organized. Following these signals over time can connect early cell populations with later tissue structure. Differences in signal distribution or intensity may also help characterize developmental defects in model organisms or cultured systems.