Egfp Expression
Egfp Expression - Related Videos
10:03
Development of Leishmania Species Strains with Constitutive Expression of eGFP
0 Views •
2023
Here, we describe the methodology used for generating L. panamensis and L. donovani strains expressing the gene for eGFP as a stable integrated transgene using the pLEXSY system. Transfected parasites were cloned by limiting dilution, and clones with the highest fluorescence intensity in both species were selected for further use in drug screening assays.
10:54
Reliable Identification of Living Dopaminergic Neurons in Midbrain Cultures Using RNA Sequencing and TH-promoter-driven eGFP Expression
0 Views •
Cited by 9 •
2017
In Parkinson's Disease (PD), Substantia Nigra (SNc) dopaminergic neurons degenerate, leading to motor dysfunction. Here we report a protocol for culturing ventral midbrain neurons from a mouse expressing eGFP driven by a Tyrosine Hydroxylase (TH) promoter sequence, harvesting individual fluorescent neurons from the cultures, and measuring their transcriptome using RNA-seq.
11:43
Easy Measurement of Diffusion Coefficients of EGFP-tagged Plasma Membrane Proteins Using k-Space Image Correlation Spectroscopy
0 Views •
Cited by 37 •
2014
This paper provides a step by step guide to the fluctuation analysis technique k-Space Image Correlation Spectroscopy (kICS) for measuring diffusion coefficients of fluorescently labeled plasma membrane proteins in live mammalian cells.
14:39
A Quantitative Assay for Insulin-expressing Colony-forming Progenitors
0 Views •
Cited by 11 •
2011
A three-dimensional clonogenic assay that allows pancreatic-like progenitors to differentiate into insulin-expressing colonies is described. This method takes advantage of semi-solid media containing methylcellulose, Matrigel and growth factors, in which single progenitors proliferate and differentiate in vitro, permitting quantification of the number of functional progenitors in a population.
09:08
Rapid Optimization of a Light-Inducible System to Control Mammalian Gene Expression
0 Views •
Cited by 1 •
2025
This study describes a method for high-throughput experiments using a 3D-printed LED array to optimize light-inducible gene expression in HEK293T cells.
FAQs
The promoter determines which regulatory program drives the EGFP-encoding sequence, so fluorescence can serve as an indicator of that promoter’s activity. Selecting a promoter aligned with the biological question helps researchers connect observed green signal with gene regulation rather than treating fluorescence as an isolated measurement. This makes EGFP useful for studying cellular responses and disease-related changes.
Newly produced EGFP does not immediately provide the mature fluorescent signal. The protein must fold and develop its chromophore, the light-responsive structure responsible for fluorescence. Once maturation occurs, excitation with blue or ultraviolet light produces detectable green emission. This sequence links measured fluorescence to successfully processed protein, not solely to the presence of the encoding DNA.
The spatial distribution of EGFP fluorescence can show where an associated protein is located within a cell. This allows researchers to examine localization patterns while observing cellular material, rather than relying only on a bulk measurement of expression. In biomedical studies, such visualization can help relate protein positioning to cellular behavior or responses under investigation.
A typical workflow begins by placing the DNA sequence encoding EGFP under a selected promoter and introducing that construct into cells. Cellular transcription produces messenger RNA, and translation produces the protein. After folding and chromophore maturation, researchers illuminate the sample with blue or ultraviolet light and measure the resulting green fluorescence as the experimental readout.
Because fluorescence can be measured in living samples, EGFP expression supports repeated observation of the same cellular system. Researchers can follow tracked or genetically modified cells, monitor promoter activity, and examine changing cellular behavior without restricting analysis to a single endpoint. This longitudinal capability is valuable when evaluating disease models, therapeutic strategies, or cellular responses.
Biomedical researchers use EGFP to track transfected or genetically modified cells, evaluate delivery methods, and observe promoter activity or protein localization. The signal also supports analysis of disease models and therapeutic strategies by providing a visible readout in living samples. These applications connect molecular activity with cell behavior and permit fluorescence-based assessment of experimental outcomes.