Host Cells
Host Cells - Related Videos
04:15
Extracting Host Cell Lysate from Infected Host Cells Cultured in a Permeable Membrane System
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2025
This video demonstrates a permeable membrane insert system to investigate the impact of bacterial toxins on host cells in a controlled and isolated manner. This approach allows for the selective exposure of the cells to the toxins while maintaining a physical separation that mimics the natural host-pathogen interaction.
03:05
Detection of Bacterial Adherence to Host Cells Using Fluorescence Imaging
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2025
This video demonstrates the bacterial adherence assay to evaluate GFP-tagged bacterial adherence to epithelial cell culture to study the dynamics of host-pathogen interactions using fluorescence microscopy-based imaging.
03:41
Isolation of Intracellular Pathogenic Bacteria from Infected Host Cells
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2026
Source: Sigal, N., et al. RNA Purification from Intracellularly Grown Listeria monocytogenes in Macrophage Cells. J. Vis. Exp. (2016).This video demonstrates the isolation of internalized pathogenic bacteria from infected bone marrow-derived macrophages (BMDMs). Bacteria are allowed to attach to host cells, and unattached bacteria are washed away. After internalization, an antibiotic is added to eliminate non-internalized bacteria. The host cells are lysed, centrifuged, and the supernatant is...
04:06
Assessing Bacteria-Host Cell Interactions Using Biomimetic Beads
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2025
Source: Stones, D. H., et al. Biomimetic Materials to Characterize Bacteria-host Interactions. J. Vis. Exp. (2015)This video demonstrates the use of bacteriomimetic beads to quantify bacterial adhesion to host epithelial cells under competitive conditions. It outlines the steps involved in treating the cells, lysing them, and plating serial dilutions to measure colony-forming units.
07:58
Use of Image Cytometry for Quantification of Pathogenic Fungi in Association with Host Cells
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Cited by 1 •
2013
Here, we demonstrate how image cytometry can be used for quantification of pathogenic fungi in association with host cells in culture. This technique can be used as an alternative to CFU enumeration.
FAQs
Specific receptor recognition determines whether a pathogen can engage a host cell. Microbial surface molecules or viral proteins bind compatible receptors, so differences in receptor presence or structure can alter which cells are susceptible to attachment and entry. This relationship helps explain why cellular variation influences infection patterns and, ultimately, disease or treatment outcomes.
After recognition, entry can proceed through different cellular routes, including membrane fusion, endocytosis, or intracellular invasion. These are distinct ways a pathogen crosses or reaches the cell interior. Identifying the route clarifies how infection begins and helps connect surface recognition with subsequent use of host-cell resources.
Host-cell infection creates a competition between pathogen exploitation and cellular defense. Pathogens use resources within the cell to support survival or replication, while host sensors detect infection and activate inflammatory or antiviral responses. Studying both sides is essential because infection outcome reflects not only microbial activity but also how effectively the cell initiates protective signaling.
Comparing host cells requires attention to three linked features: receptors that permit recognition, signaling pathways that transmit danger responses, and defenses that restrict infection. Differences in these features can change susceptibility even when cells encounter the same pathogen. Such comparisons help investigators relate cellular variation to disease mechanisms and differences in treatment outcomes.
Immune cells contribute to host-cell defense by detecting cells that have become infected and eliminating them. This response adds a cellular layer of protection beyond the infected cell’s own inflammatory or antiviral signaling. In immunology studies, examining this interaction helps explain how infected cells are handled and how intracellular infection connects with broader immune defense.
Research on host cells supports questions ranging from how pathogens cause disease to why treatment outcomes differ. Investigators can examine receptor patterns, signaling responses, and cellular defenses as connected points of analysis when interpreting infection. This framework is relevant to immunology and infection because it links molecular recognition, intracellular events, and immune elimination.