Cell Washing Protocol
Cell Washing Protocol - Related Videos
00:52
Washing, Drying, and Ignition of Precipitates
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2024
After filtration, the precipitate is washed to remove coprecipitated impurities and any remaining mother liquor. Colloidal precipitates, such as silver chloride, are washed with an electrolyte (such as dilute nitric acid) to prevent the peptization of the precipitate. In the case of slightly soluble precipitates, the wash solution contains a common ion to reduce solubility. Lead sulfate, which is slightly soluble in water, is washed with dilute sulfuric acid. Similarly, wash solutions may be...
08:07
Sample Preparation for Single Cell Mass Spectrometry Metabolomics Studies: Combined Cell Washing, Quenching, Drying, and Storage
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Cited by 1 •
2025
This protocol aims to preserve cell metabolites for single-cell mass spectrometry (SCMS) by combining volatile salt solution washing, rapid liquid nitrogen quenching, freeze-drying, and −8 °C storage. It demonstrates that liquid nitrogen quenching is essential for maintaining metabolite profiles, while prolonged cold storage should be minimized to prevent metabolic alterations.
06:46
Pulsed Laser Diode-Based Desktop Photoacoustic Tomography for Monitoring Wash-In and Wash-Out of Dye in Rat Cortical Vasculature
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Cited by 9 •
2019
A compact pulsed laser diode-based desktop photoacoustic tomography (PLD-PAT) system is demonstrated for high-speed dynamic in vivo imaging of small animal cortical vasculature.
12:02
Studying Cell Cycle-regulated Gene Expression by Two Complementary Cell Synchronization Protocols
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Cited by 31 •
2017
We report two cell synchronization protocols that provide a context for studying events related to specific phases of the cell cycle. We show that this approach is useful for analyzing the regulation of specific genes in an unperturbed cell cycle or upon exposure to agents affecting the cell cycle.
06:09
In Vitro Reassociation Assay to Measure the Formation of 80S Ribosomal Particles Using Salt-washed Ribosomal Subunits
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2025
Here, we describe a detailed protocol for the in vitro reassociation of purified, salt-washed eukaryotic ribosomal subunits for the analysis of 80S particle formation. This method is illustrated by analyzing ribosomal subunits isolated from a wild-type strain of Saccharomyces cerevisiae and a mutant strain deficient in the ribosomal protein eL24.
FAQs
Buffer selection determines whether washing removes unwanted soluble components without compromising the cells. The suspension is diluted or resuspended in a buffer compatible with the cell type, allowing the cells to remain available for subsequent analysis or culture while reducing surrounding media components, enzymes, antibodies, drugs, or other reagents. This compatibility supports useful, consistent samples.
The separation step concentrates cells away from the surrounding liquid so that the liquid containing unwanted substances can be removed. Centrifugation or another settling approach must retain the cells for resuspension and further work. Its purpose is therefore both cleanup and sample recovery, making the separation process important for reliable downstream analysis or culture.
Additional wash cycles may be used when one wash does not sufficiently reduce residual media components, enzymes, antibodies, drugs, or other reagents. However, repetition should remain appropriate for the cell type and intended experiment because every cycle adds handling. The goal is a cleaner suspension without compromising the sample needed for later analysis or culture.
Residual substances can interfere with measurements or alter the conditions experienced by cells during subsequent experiments. Washing reduces these potential sources of variation before procedures such as flow cytometry, microscopy, cell counting, molecular assays, or cell-based experiments. Cleaner suspensions help researchers distinguish assay results from effects caused by leftover media or experimental reagents.
A practical workflow requires resuspending or diluting the cells in a compatible buffer, separating the cells from the surrounding liquid, removing the supernatant carefully, and resuspending the retained cells. Repeating the wash may be appropriate when residual substances remain. Careful handling throughout these steps helps preserve the sample for its planned downstream use.
Washed suspensions support several downstream applications, including flow cytometry, microscopy, cell counting, molecular assays, and cell-based experiments. The specific purpose is to reduce substances that could interfere with the next measurement or treatment. Washing can therefore improve sample consistency across different biological workflows, provided the handling conditions suit the cells being studied.
By reducing residual media components and added reagents, washing makes the starting suspension more consistent before analysis or culture. This can limit variation arising from substances carried over from an earlier step and helps standardize samples used in comparative experiments. The resulting data are more directly related to the planned assay conditions rather than uncontrolled carryover.
Cells differ in how they tolerate handling and in what conditions they require for continued analysis or culture. The buffer, separation approach, and extent of washing therefore need to remain compatible with both the cells and the intended application. Matching these conditions helps retain usable cells while achieving the desired reduction in unwanted substances.