Fluorescent Lipid Analogs
Fluorescent Lipid Analogs - Related Videos
08:31
Measuring Membrane Lipid Turnover with the pH-sensitive Fluorescent Lipid Analog ND6
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Cited by 2 •
2021
This protocol presents a fluorescence imaging method that uses a class of pH-sensitive lipid fluorophores to monitor lipid membrane trafficking during cell exocytosis and the endocytosis cycle.
08:37
Fluorescence-based Monitoring of PAD4 Activity via a Pro-fluorescence Substrate Analog
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Cited by 3 •
2014
PAD4 is an enzyme responsible for the conversion of peptidyl-arginine to peptidyl-citrulline. Dysregulation of PAD4 has been implicated in a number of human diseases. A facile and high-throughput compatible fluorescence based PAD4 assay is described.
06:03
Quantification of Endothelial Fatty Acid Uptake using Fluorescent Fatty Acid Analogs
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2025
This protocol details an in vitro assay for measuring cellular lipid uptake in endothelial cells upon stimulation with BODIPY-C12 and BODIPY-C16 fluorescent analogs of long-chain and very long-chain saturated fatty acids. This method is efficient and adaptable to other cell types, offering a useful approach for studying lipid metabolism.
08:39
Tracking Single Proteins in Lipid Bilayers Using Fluorescence Microscopy
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2025
This article provides a detailed description of how to create samples for single-protein tracking in solid-supported lipid bilayers. It also explains a straightforward fluorescence microscope with single-molecule sensitivity and a fast frame rate. Finally, we outline the procedure for extracting single-protein trajectories.
10:59
Determination of Lipid Raft Partitioning of Fluorescently-tagged Probes in Living Cells by Fluorescence Correlation Spectroscopy (FCS)
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Cited by 9 •
2012
A technique to probe the lipid raft partitioning of fluorescent proteins at the plasma membrane of living cells is described. It takes advantage of the disparity in diffusion times of proteins located inside or outside of lipid rafts. Acquisition can be performed dynamically in control conditions or after drug addition.
FAQs
The fluorophore absorbs excitation light and then emits light at a longer wavelength, producing a detectable signal during imaging. Because the label is attached to a lipid structure, the signal can be associated with membrane regions, lipid droplets, or other lipid-rich locations. This optical behavior allows researchers to follow lipid positioning and movement without relying only on nonfluorescent observations.
Attaching a fluorophore changes the structure of the original lipid molecule, so the probe may not distribute or behave exactly like the unlabeled lipid. Its altered behavior can affect where it accumulates and how it participates in cellular processes. Researchers must therefore interpret fluorescence patterns as observations of the analog and consider whether labeling influences membrane association, transport, or interactions.
The lipid portion of the probe promotes association with lipid-rich cellular structures, including membranes and lipid droplets, while cellular processes can redistribute the analog. Imaging may therefore reveal patterns linked to membrane organization, lipid transport, or endocytosis. The observed location reflects both the biological handling of the lipid portion and any distribution changes caused by the attached fluorescent label.
Living samples can show dynamic changes in lipid location and movement, making them useful for examining transport, endocytosis, and signaling as processes occur. Fixed samples provide a preserved view of probe distribution at a selected point. Using fluorescence microscopy or related imaging approaches, researchers can choose between tracking dynamics and documenting spatial organization, depending on the biological question.
A typical workflow involves selecting a fluorescently labeled lipid suited to the biological structure or process of interest, examining the sample with fluorescence microscopy or a related imaging method, and interpreting the resulting signal in its cellular context. Researchers compare the observed localization or movement with the intended lipid behavior while accounting for possible effects from the fluorescent attachment.
These probes support studies of membrane organization, lipid transport, endocytosis, and cellular signaling. They also provide a way to examine host-pathogen interactions and drug delivery by showing where lipid-associated material is located or how it moves in biological systems. Their value comes from connecting visible fluorescence patterns with changes in lipid-rich structures and related cellular processes.