Gfp Labeling
Gfp Labeling - Related Videos
07:25
Live Imaging of GFP-labeled Proteins in Drosophila Oocytes
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Cited by 5 •
2013
A protocol for live imaging of GFP-tagged proteins or autofluorescent structures in individual Drosophila oocytes is described.
04:55
CRC Organoid Cell Labeling: A Method to Generate GFP Lentivirus-transduced Colorectal Cancer Organoid Cells
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2023
This video describes the technique of generating CRC organoids transduced by GFP lentiviral particles for enabling fluorescent imaging. These GFP labeled organoids, when placed in animal models, help to study tumor invasion and metastasis.
09:57
Dual Labeling of Neural Crest Cells and Blood Vessels Within Chicken Embryos Using ChickGFP Neural Tube Grafting and Carbocyanine Dye DiI Injection
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Cited by 11 •
2015
Here we report dual labeling of neural crest cells and blood vessels using chickGFP neural tube intraspecies grafting combined with intra-vascular DiI injection. This experimental technique allows us to simultaneously visualize and study development of the NCC-derived (enteric) nervous system and the vascular system, during organogenesis.
07:55
Imaging the Intracellular Trafficking of APP with Photoactivatable GFP
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Cited by 6 •
2015
While the transport of cell surface proteins is relatively easily studied, visualizing the trafficking of intracellular proteins is much more difficult. Here, we use constructs incorporating photoactivatable GFP and demonstrate a method to accurately follow the amyloid precursor protein from the Golgi apparatus to down-stream compartments and follow its clearance.
10:41
Using a GFP-tagged TMEM184A Construct for Confirmation of Heparin Receptor Identity
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Cited by 2 •
2017
A construct encoding TMEM184A with a GFP tag at the carboxy-terminus designed for eukaryotic expression, was employed in assays designed to confirm the identification of TMEM184A as a heparin receptor in vascular cells.
FAQs
The GFP coding sequence is fused to a target gene so the resulting biological system produces a fluorescent form associated with that target. The emitted signal can indicate where the target protein is located inside a cell or when the linked gene is active. This genetic linkage connects fluorescence with specific molecular or expression patterns.
Fluorescence depends on two linked optical events: GFP absorbs excitation light at a suitable wavelength and then emits green light that a fluorescence microscope detects. This separation between excitation and emission allows labeled structures to be distinguished from the illumination source. The detected signal provides the visual readout for localization and time-dependent observation.
GFP labeling produces a signal from within the labeled biological system, so researchers can observe changes without adding external dyes. This supports repeated examination of living specimens as proteins move, cells change position, or gene expression varies. The approach therefore links molecular events with their timing and location during ongoing biological processes.
A basic workflow begins by selecting the protein or gene expression pattern to study, then linking the GFP coding sequence to the corresponding target gene. Cells produce the resulting fluorescent material, which is examined with fluorescence microscopy. Researchers can then relate the observed green signal to protein localization, cellular movement, or changes in gene expression.
GFP labeling can address several distinct questions, including where a protein is located, whether its distribution changes, how cells move, and how gene expression varies over time. Because the signal can be followed in living specimens, the method connects these observations to dynamic cellular behavior rather than limiting analysis to a single fixed state.
The location and timing of fluorescence provide observational evidence about a protein’s behavior within cells. Tracking where the labeled protein appears, and how that pattern changes during a biological event, helps researchers investigate its relationship to cellular processes. This makes GFP labeling relevant to protein function studies as well as broader analyses of gene expression and cell movement.