Inclusion Growth Dynamics
Inclusion Growth Dynamics - Related Videos
07:42
Using Fluorescent Proteins to Visualize and Quantitate Chlamydia Vacuole Growth Dynamics in Living Cells
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Cited by 4 •
2015
A live cell fluorescent protein based method for illuminating cellular vacuoles (inclusions) containing Chlamydia is described. This strategy enables rapid, automated determination of Chlamydia infectivity in samples and can be used to quantitatively investigate inclusion growth dynamics.
10:45
In Situ Visualization of Axon Growth and Growth Cone Dynamics in Acute Ex Vivo Embryonic Brain Slice Cultures
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Cited by 4 •
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This protocol demonstrates a straightforward and robust method to study in situ axon growth and growth cone dynamics. It describes how to prepare ex vivo physiologically relevant acute brain slices and provides a user-friendly analysis pipeline.
01:27
Cell Inclusions
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2025
Prokaryotic cells possess a variety of inclusions that play crucial roles in nutrient storage, metabolic processes, and environmental adaptation. These structures enable bacteria to thrive under fluctuating environmental conditions by storing essential resources and optimizing their metabolic efficiency.Carbon Storage: Poly-β-Hydroxybutyric Acid and Glycogen GranulesBacteria frequently store excess carbon in specialized granules. Poly-β-hydroxybutyric acid (PHB) granules are lipid polymers that...
00:57
Inclusive Fitness
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2025
Most altruistic behavior—in which one animal helps another at a cost to themselves—occurs between relatives. Scientists think these altruistic behaviors evolved because they increase the inclusive fitness of the animal providing help. Inclusive fitness is an individual’s ability to pass down their genes—both through their offspring and the offspring of close relatives with shared genes. If an animal helps a close relative improve their reproductive success, this increases the animal’s...
08:11
Measuring Growth and Gene Expression Dynamics of Tumor-Targeted S. Typhimurium Bacteria
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Cited by 22 •
2013
The goal of these experiments is to generate quantitative time-course data on the growth and gene expression dynamics of attenuated S. typhimurium bacterial colonies growing inside tumors. This video covers tumor cell preparation and implantation, bacteria preparation and injection, whole-animal luminescence imaging, tumor excision, and bacterial colony counting.
FAQs
Size alone cannot establish that a pathogen is replicating, because an intracellular compartment may enlarge through membrane acquisition or host-derived material. Researchers therefore compare changes in compartment dimensions and shape with fluorescence signals that indicate microbial presence, then use image analysis or complementary molecular assays. This combined approach helps separate biological growth from structural expansion of the host-associated compartment.
Host trafficking pathways can supply inclusions with lipids, proteins, and membrane, allowing the compartment to expand even when changes in microbial abundance are not yet clear. Their activity therefore affects both compartment size and composition. Examining these changes alongside pathogen-associated fluorescence can reveal how intracellular organisms exploit host-cell logistics to maintain a suitable environment during infection.
Cytoskeletal remodeling can alter the shape, positioning, and persistence of intracellular compartments. These structural changes may influence how an inclusion interacts with host-cell trafficking and other cellular processes, while immune pressure can further modify its architecture. Tracking morphology over time is therefore useful for identifying host-cell responses that affect the stability and intracellular survival of the pathogen-associated compartment.
Composition provides information about which host materials and pathogen-associated features accumulate within an inclusion. Monitoring proteins, lipids, membrane, and microbial signals can indicate whether expansion reflects active recruitment of host resources, pathogen replication, or both. This perspective is important because compartments with similar dimensions may differ substantially in biological state, persistence, and interaction with host defenses.
A basic workflow combines time-lapse fluorescence microscopy with quantitative image analysis to follow compartment size, shape, and fluorescence-associated features across infection. Researchers can then compare those measurements with complementary molecular assays that assess pathogen or compartment-related changes. Repeated observations over time are especially valuable because they distinguish transient remodeling from sustained expansion and persistence.
Useful measurements include changes in compartment size, shape, and composition, together with fluorescence signals linked to the pathogen or relevant cellular features. Time-resolved imaging shows how these properties evolve, whereas image analysis converts visual changes into quantitative comparisons. Molecular assays add an independent line of evidence, helping interpret whether observed remodeling corresponds to microbial growth or host-cell adaptation.
These measurements connect intracellular compartment behavior with microbial replication, host-cell biology, and immune pressure. They can clarify how pathogens persist inside cells, how host defenses influence compartment architecture, and which interactions may support survival. Because the approach identifies changes in both structure and composition, it can also help prioritize cellular processes as potential targets for antimicrobial intervention.