Dual Fluorescence
Dual Fluorescence - Related Videos
03:16
Dual Fluorescence Imaging to Identify Differentiated Oligodendrocytes
0 Views •
2025
Source: Schott, J. T., et al. Preparation of Rat Oligodendrocyte Progenitor Cultures and Quantification of Oligodendrogenesis Using Dual-infrared Fluorescence Scanning. J. Vis. Exp. (2016). This video demonstrates the use of dual fluorescence imaging to evaluate the differentiation of oligodendrocytes from precursor cells (OPCs) isolated from a rat pup brain. The process includes fixing the cells, labeling specific markers with primary and fluorophore-conjugated secondary antibodies, and...
11:21
Photoconversion of Purified Fluorescent Proteins and Dual-probe Optical Highlighting in Live Cells
0 Views •
Cited by 5 •
2010
This protocol describes a general approach to perform photoconversion of fluorescent proteins on a confocal laser scanning microscope. We describe procedures for the photoconversion of puried protein samples, as well as for dual-probe optical highlighting in live cells with mOrange2 and Dronpa.
08:46
A "Dual-Addition" Calcium Fluorescence Assay for the High-Throughput Screening of Recombinant G Protein-Coupled Receptors
0 Views •
Cited by 1 •
2022
In this work, a high-throughput, intracellular calcium fluorescence assay for 384-well plates to screen small molecule libraries on recombinant G protein-coupled receptors (GPCRs) is described. The target, the kinin receptor from the cattle fever tick, Rhipicephalus microplus, is expressed in CHO-K1 cells. This assay identifies agonists and antagonists using the same cells in one "dual-addition" assay.
09:30
Dual Somatic Recordings from Gonadotropin-Releasing Hormone (GnRH) Neurons Identified by Green Fluorescent Protein (GFP) in Hypothalamic Slices
0 Views •
Cited by 3 •
2010
Activity in neuronal systems often requires synchronous action potential discharges from neurons within a specific population. For example, pulses of gonadotropin-releasing hormone (GnRH) likely require coordinated activity between GnRH neurons. We present our methodological approach for reliably obtaining simultaneous electrophysiological recordings from the diffusely distributed GnRH neurons.
02:40
Detecting SMAD Pathway Activation Using Dual Adenovirus Transduction
0 Views •
2026
Source: Chen, H., et al. Live Cell Imaging of the TGF-β/Smad3 Signaling Pathway In Vitro and In Vivo Using an Adenovirus Reporter System. J. Vis. Exp. (2018).This video demonstrates a method to study SMAD pathway activation in breast cancer cells using dual adenoviral infection. One virus delivers a constitutively expressed GFP gene, while the other carries an RFP reporter under a SMAD-sensitive promoter. Upon TGF-beta stimulation, SMAD proteins are activated, forming a complex that induces RFP...
FAQs
Signal separation depends on the fluorophores' spectral properties. Researchers select excitation wavelengths that stimulate the relevant labels and then detect their emitted light as distinct signals. This separation lets each channel be assigned to a different biological component, reducing ambiguity when two structures, molecules, or cell populations are examined in the same sample.
An internal comparison strengthens interpretation because one fluorescent signal can be evaluated against the other within the same experiment. Differences in intensity, localization, or presence can show that components occupy different places, produce different signal levels, or occur in separate cell populations. This paired view provides more information than observing either marker alone.
Dual fluorescence can connect a biological readout with a reference feature. When one signal marks gene expression and the other marks a cellular structure, their spatial relationship can be assessed. Similarly, distinct signals can help examine molecules in interaction studies. The value comes from comparing corresponding patterns rather than interpreting one channel in isolation.
A basic workflow begins by assigning different fluorescent labels to the biological features being studied. The sample is illuminated with appropriate excitation wavelengths, and emitted light is detected separately for each signal. Researchers then compare channels by localization and intensity, using paired measurements to track components or interpret biological differences.
Dual fluorescence is useful when researchers need to examine more than one biological feature at once. Supported applications include studying molecular interactions, distinguishing cell populations, monitoring gene expression alongside cellular structures, and tracking protein trafficking. These uses allow the signals to be compared directly, helping connect a molecular or cellular readout with its biological context.
In biology, the approach is relevant to cell signaling, protein trafficking, development, and disease mechanisms. Its contribution is comparative: two signals can be followed or interpreted together, making it possible to relate a process to a structure, population, or second molecular feature. This context supports more informative analysis than a single fluorescent marker provides.