Calcium-sensitive Fluorescent Dye
Calcium-sensitive Fluorescent Dye - Related Videos
10:30
Dye-sensitized Solar Cells
0 Views •
2023
Source: Tamara M. Powers, Department of Chemistry, Texas A&M University Today's modern world requires the use of a large amount of energy. While we harness energy from fossil fuels such as coal and oil, these sources are nonrenewable and thus the supply is limited. To maintain our global lifestyle, we must extract energy from renewable sources. The most promising renewable source, in terms of abundance, is the sun, which provides us with more than enough solar energy to fully fuel our...
08:14
Assessing T-cell Receptor-Induced Calcium Influx Using a Calcium Indicator Dye
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2025
This video analyzes T-cell receptor-induced calcium influx in T-cells. Anti-CD3 antibodies activate the T-cell signaling pathways, leading to an increase in intracellular calcium ions that bind with Indo-1 dye. In flow cytometry, a spectrum shift from the calcium-free state to the calcium-bound state correlates with T-cell receptor-induced calcium influx.
09:32
Direct Imaging of ER Calcium with Targeted-Esterase Induced Dye Loading (TED)
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Cited by 60 •
2013
Targeted-esterase induced dye loading (TED) supports the analysis of intracellular calcium store dynamics by fluorescence imaging. The method bases on targeting of a recombinant Carboxylesterase to the endoplasmic reticulum (ER), where it improves the local unmasking of synthetic low-affinity Ca2+ indicator dyes in the ER lumen.
17:05
Loading a Calcium Dye into Frog Nerve Endings Through the Nerve Stump: Calcium Transient Registration in the Frog Neuromuscular Junction
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Cited by 13 •
2017
Here, we describe a method for loading a calcium-sensitive dye through the frog nerve stump into the nerve endings. We also present a protocol for the recording and analysis of fast calcium transients in the peripheral nerve endings.
09:30
Electrospinning of Photocatalytic Electrodes for Dye-sensitized Solar Cells
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Cited by 3 •
2017
The overall goal of this project was to use electrospinning to fabricate a photoanode with improved performance for dye-sensitized solar cells.
FAQs
Binding of Ca2+ changes the dye’s fluorescence behavior, allowing calcium-dependent signals to be detected optically. Depending on the indicator, the measurable change may appear as altered fluorescence intensity or a shift in emission properties. This relationship links intracellular calcium fluctuations to a recorded optical signal, making the dye useful for tracking cellular responses over time.
Fluorescence intensity and emission properties provide complementary ways to detect calcium-related changes. An experiment may therefore monitor how bright the signal becomes or how its emitted light changes as Ca2+ binding occurs. Selecting the measured optical feature helps align the dye with available fluorescence microscopy, plate readers, or flow cytometry setup.
Time-resolved measurements show how intracellular calcium changes evolve rather than providing only a single reading. This temporal information can relate calcium dynamics to muscle contraction, neurotransmitter release, or drug exposure. In pharmacology, the resulting profiles can reveal changes in cellular activity and help clarify when a compound alters intracellular signaling.
Researchers can pair these indicators with fluorescence microscopy, plate readers, or flow cytometry. Microscopy supports observation of fluorescence in cells, whereas plate readers and flow cytometry provide alternative measurement formats for experimental samples. The choice of platform determines how calcium-associated fluorescence is collected and supports applications ranging from cellular observation to compound screening.
They help characterize how compounds affect ion channels, receptors, excitation-contraction coupling, and intracellular signaling. By monitoring fluorescence after pharmacological manipulation, investigators can connect a compound’s effect with changes in cellular calcium behavior. This approach supports mechanistic studies because the measured response can indicate whether drug action is associated with altered calcium-dependent signaling.
They can be used to examine cellular activity, compound responses, and mechanisms underlying therapeutic or toxic effects. In screening studies, calcium signals provide a measurable readout for comparing how compounds influence cells. In mechanism-oriented pharmacology, the same measurements can help connect changes in intracellular calcium with receptor, ion-channel, or excitation-contraction responses.