Cell Accumulation Assay
Cell Accumulation Assay - Related Videos
04:02
An Assay to Measure the Accumulation of a Fluorescent Antibiotic Probe in Bacterial Cells
0 Views •
2025
This video demonstrates an assay to measure the accumulation of a fluorescent antibiotic probe in bacterial cells. Exposure to an efflux pump inhibitor disrupts the transmembrane proton gradient in bacterial cells, upon which a fluorophore-conjugated antibiotic is added. Inhibition of efflux pumps due to the disrupted proton gradient causes accumulation of the antibiotic inside the bacteria. Bacterial cells are lysed, and the fluorescence intensity is measured to confirm antibiotic accumulation.
10:32
Detection of Post-Replicative Gaps Accumulation and Repair in Human Cells Using the DNA Fiber Assay
0 Views •
Cited by 3 •
2022
Here we describe two modifications of the DNA fiber assay to investigate single-stranded DNA gaps in replicating DNA after lesion induction. The S1 fiber assay enables the detection of post-replicative gaps using the ssDNA-specific S1 endonuclease, while the gap-filling assay allows visualization and quantification of gap repair.
01:27
Cost Accumulation and Flow
0 Views •
2026
In manufacturing, production costs are accumulated and tracked to understand how resources are consumed and how they contribute to the final product. This process, known as cost accumulation, involves recording material, labor, and overhead costs and linking them to specific cost objects, such as individual products or production processes.Costs flow through inventory accounts in a sequence that mirrors the physical movement of goods. Initially, raw materials are recorded in the raw materials...
09:27
High Resolution Quantification of Crystalline Cellulose Accumulation in Arabidopsis Roots to Monitor Tissue-specific Cell Wall Modifications
0 Views •
Cited by 4 •
2016
Crystalline cellulose is an important constituent of the plant cell wall. However, its quantification at a cellular resolution is technically challenging. Here, we report the use of polarized light technology and root cross sections to obtain information of cell wall composition at a spatiotemporal resolution.
09:55
In vitro Cell Migration and Invasion Assays
0 Views •
Cited by 627 •
2014
Commonly used, highly accessible methods for examining cell migration and invasion in vitro are described. The first method is the cell wound closure assay that measures cell motility. The second method is the transwell migration and invasion assay that assesses the chemotactic and invasive capacity of cells.
FAQs
Intracellular levels reflect the balance among membrane permeability, transporter activity, exposure concentration, exposure duration, and retention within the cells. Changing any of these variables can alter the measured amount without changing the analytical method itself. Controlling them allows researchers to compare compounds, molecular structures, or formulations under defined cellular exposure conditions.
A Cell Accumulation Assay provides a direct measurement of compound associated with cells after a controlled exposure. When evaluated across defined concentrations or exposure periods, the resulting intracellular levels can contribute to characterizing transporter-related uptake and retention. This information complements permeability measurements by showing how cellular handling affects the amount that remains inside the cells.
Fluorescence, radiotracing, and chromatography-based detection can quantify material recovered from cells. These approaches differ in the signal or analytical measurement used, but each supports estimation of intracellular compound after the cells are processed. Selecting an appropriate readout enables comparisons of cellular exposure across compounds, formulations, or experimental conditions.
Separating cells from the surrounding medium limits measurement of compound that remains outside the cells. Washing further helps remove residual external material before the cells are lysed and analyzed. This sequence is essential for distinguishing intracellular exposure from compound still present in the medium, making the final measurement more relevant to cellular accumulation and retention.
Varying the defined compound concentration or the length of cellular exposure produces measurements that can be compared across conditions. These comparisons help reveal uptake kinetics, meaning how intracellular levels change over time or with exposure. The resulting profiles support evaluation of cellular delivery and retention rather than relying on a single endpoint measurement.
In chemistry and pharmaceutical studies, intracellular measurements support comparisons of molecular structure, formulation, and cellular delivery. The data can also inform investigations of toxicity and drug action by showing how much compound reaches and remains within cells. This connects chemical design and analytical measurement with the cellular exposure conditions relevant to biological performance.