Cellular Compartment Purification
Cellular Compartment Purification - Related Videos
12:48
Purification of the Membrane Compartment for Endoplasmic Reticulum-associated Degradation of Exogenous Antigens in Cross-presentation
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Cited by 2 •
2017
The method described here is a new vesicle isolation protocol, which allows for the purification of the cellular compartments where exogenous antigens are processed by endoplasmic reticulum-associated degradation in cross-presentation.
08:26
Purification of Viral DNA for the Identification of Associated Viral and Cellular Proteins
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Cited by 17 •
2017
The goal of this protocol is to specifically tag and selectively isolate viral DNA from infected cells for the characterization of viral genome associated proteins.
01:20
Compartment Models: Two-Compartment Model
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2025
The two-compartment model divides the body into central and peripheral compartments to account for varying blood perfusion rates among organs and tissues, affecting drug distribution. The central compartment includes blood and highly perfused tissues with rapid drug distribution, while the peripheral compartment contains tissues with slower drug distribution. After a single IV bolus dose, the drug concentration is high in plasma and low in tissues. The drug distribution between compartments...
07:32
Purification of Mouse Brain Vessels
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Cited by 90 •
2015
We describe a protocol allowing the purification of the mouse brain's vascular compartment. Isolated brain vessels include endothelial cells linked by tight junctions and surrounded by a continuous basal lamina, pericytes, vascular smooth muscle cells, as well as perivascular astroglial membranes.
09:41
Isolation of Cellular Lipid Droplets: Two Purification Techniques Starting from Yeast Cells and Human Placentas
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Cited by 15 •
2014
Two techniques for isolating cellular lipid droplets from 1) yeast cells and 2) human placentas are presented. The centerpiece of both procedures is density gradient centrifugation, where the resulting floating layer containing the droplets can be readily visualized by eye, extracted, and quantified by Western Blot analysis for purity.
FAQs
The workflow begins with controlled cell disruption, which releases cellular regions while aiming to preserve relevant molecular features. Subsequent centrifugation separates the released components according to physical behavior, especially size, density, and sedimentation. This combination allows researchers to enrich a defined region for biochemical or functional analysis rather than interpreting signals from the whole cell, where compartment-specific differences may be obscured.
Both approaches use sedimentation behavior, but they distinguish components through different separation schemes. Differential centrifugation separates cellular material based on how components sediment under successive centrifugation conditions, whereas density-gradient separation further distinguishes material by density within a gradient. Selecting between them, or combining them, helps researchers obtain preparations suited to the compartment and analysis of interest.
Utility depends on whether the preparation retains relevant molecular features and represents the intended cellular region. Separation behavior is shaped by component size, density, and sedimentation, while the initial disruption must be controlled. When these features are appropriately managed, researchers can examine where immune signaling, pathogen replication, or microbial effector proteins occur and connect localization with compartment-specific mechanisms.
A typical workflow moves from controlled disruption of cells to separation by differential centrifugation or density-gradient methods. Researchers then analyze the resulting compartment preparation using biochemical or functional assays. Protein and nucleic acid analysis can characterize molecular contents, while microscopy provides validation of the compartment assignment. The sequence links physical separation with independent assessment of what each preparation contains.
Validation benefits from combining methods rather than relying on separation alone. Protein analysis and nucleic acid analysis reveal molecular content, while microscopy can verify the associated cellular localization. Functional analysis adds information about activity in the isolated material. Together, these readouts help determine whether a preparation supports a compartment-specific interpretation of immune or infection-related findings.
It can localize host immune signaling, pathogen replication, and microbial effector proteins to particular cellular regions. That information helps researchers distinguish events associated with the nucleus, cytoplasm, membranes, or organelles and investigate mechanisms shaping infected-cell responses. The resulting preparations also support focused biochemical and functional studies, making localization data more informative than measurements from an undivided cell.