Egfp Expression Analysis
Egfp Expression Analysis - 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.
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.
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.
14:40
Expression Analysis of Mammalian Linker-histone Subtypes
0 Views •
Cited by 22 •
2012
We describe a set of assays to analyze expression levels of H1 linker histones. mRNA of individual H1 genes are quantitatively measured by random primer based reverse transcription followed by real-time PCR, whereas protein quantification of H1 histones is achieved by HPLC analysis.
29:41
Bacterial Gene Expression Analysis Using Microarrays
0 Views •
Cited by 3 •
2007
FAQs
EGFP fluorescence provides a measurable signal that can be related to reporter production and, therefore, gene activity. Blue or ultraviolet excitation causes the protein product to fluoresce green, while differences in signal intensity can indicate changes in expression under different conditions. Interpretation is especially useful when comparing cellular responses to environmental factors such as pollutants, nutrients, or temperature.
Excitation with blue or ultraviolet light is essential because it stimulates EGFP to emit green fluorescence. Without this illumination step, the reporter signal cannot be detected through the measurement systems described. Consistent excitation allows researchers to compare fluorescence among samples and evaluate how strongly environmental conditions are associated with changes in reporter activity.
Pollutants, nutrient availability, temperature, and other environmental conditions may change the fluorescence signal by affecting regulatory or physiological responses in cells or microorganisms. These variables can therefore be examined as potential influences on gene activity. Comparing fluorescence across conditions helps connect an external environmental factor with a measurable biological response.
A basic workflow begins with cells or organisms carrying an EGFP reporter gene, followed by exposure to the environmental conditions of interest. Researchers then measure the resulting green fluorescence using microscopy, a plate reader, or flow cytometry. Comparing signals between conditions provides evidence of changes in reporter expression associated with environmental stress or other tested factors.
The three platforms provide complementary ways to detect EGFP fluorescence. Fluorescence microscopy supports observation in cells or organisms, plate readers enable fluorescence measurements from samples in a reader format, and flow cytometry measures fluorescence in cells as they pass through the instrument. The appropriate choice depends on whether the study emphasizes visual localization, sample-level measurement, or cell-based analysis.
Environmental researchers can use EGFP reporters to investigate microbial function, stress responses, and gene regulation under changing conditions. The approach also supports development of fluorescent biosensors for monitoring ecosystems and contaminants. By linking fluorescence with responses to pollutants, nutrients, temperature, or related factors, studies can connect environmental exposure with biological activity in microorganisms or cultured cells.