Pathogen Receptor Interaction
Pathogen Receptor Interaction - Related Videos
02:26
Analysis of Macrophage Receptor Interactions with Pathogenic Bacteria Using Flow Cytometry
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2026
Source: Barbero, A. M., et al. Fluorescence Assays for the Study of Mycobacterium tuberculosis Interaction with the Immune Receptor SLAMF1. J. Vis. Exp. (2025)This video demonstrates the procedure for labeling host immune receptors that bind bacterial surface antigens, enabling their detection through flow cytometry.
13:56
A Comparative Approach to Characterize the Landscape of Host-Pathogen Protein-Protein Interactions
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Cited by 4 •
2013
This article focuses on the identification of high-confident interaction datasets between host and pathogen proteins using a combination of two orthogonal methods: yeast two-hybrid followed by a high-throughput interaction assay in mammalian cells called HT-GPCA.
02:14
Preparation of Streptococcus mitis Culture for Host-Pathogen Interaction Studies
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2025
Source: Naji, A., et al. Studying Oxidative Stress Caused by the Mitis Group Streptococci in Caenorhabditis elegans. J. Vis. Exp. (2019).This video demonstrates the method for culturing Streptococcus mitis under microaerophilic conditions using Todd-Hewitt Yeast Extract, or THY agar medium, to prepare bacterial cultures for host-pathogen interaction studies.
01:29
Drug-Receptor Interactions
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2025
Drug-receptor interaction describes the binding of receptors by drugs, but not all drug-receptor interactions result in activation and tissue response. For instance, the binding of agonists activates the receptor to generate a cellular reaction, while antagonists bind to receptors without causing their activation. Several parameters, such as the drug's affinity for its receptor and its efficacy, which is its ability to activate the receptor, determine the drug's effect on the tissue.
10:39
Single Cell Measurements of Vacuolar Rupture Caused by Intracellular Pathogens
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Cited by 22 •
2013
We describe a method for tracking the endomembrane rupture elicited by the intracellular bacteria Shigella flexneri and Mycobacterium tuberculosis upon host cell invasion. Our assay makes use of CCF4, a host cytoplasmic FRET probe in live or fixed cells. This reporter is degraded by an enzyme activity present on the bacterial surface.
FAQs
The ligand involved helps determine what follows receptor engagement. Adhesins can promote attachment, viral glycoproteins can support cellular entry, and conserved microbial structures can trigger signaling that activates innate immune defenses. These distinct consequences make ligand identity important for separating early colonization or invasion from host detection and defense.
Compatibility between a microbial ligand and a host receptor can restrict which cells, tissues, or host species are accessible to a pathogen. Differences in receptor availability or recognition may therefore influence where infection begins and which hosts are susceptible. Mapping these relationships helps connect molecular binding patterns with tissue-specific and host-specific disease mechanisms.
Receptor engagement can produce different biological outcomes depending on the ligand and receptor involved. Some interactions mainly secure attachment or facilitate entry into a cell, whereas recognition of conserved microbial structures can activate pathways involved in innate immune defense. Distinguishing these outcomes is essential when interpreting whether a receptor primarily supports infection, detection, or both.
Pathogen receptor interactions can shape immune evasion by influencing which host cells are entered, how infection is distributed through tissues, and whether innate defenses are activated. If an interaction favors entry without effective immune signaling, it may support continued infection. Studying these relationships clarifies how receptor usage contributes to disease mechanisms and host-pathogen conflict.
A mapping strategy connects specific microbial ligands, including adhesins, viral glycoproteins, or conserved microbial structures, with the host receptors they engage. Researchers then relate each interaction to attachment, cellular entry, or innate immune signaling. This framework links molecular recognition to host range, tissue tropism, immune evasion, and broader disease mechanisms.
Defined receptor interactions can guide several intervention and measurement strategies. Receptor-blocking therapies may aim to prevent pathogen attachment or entry, while vaccines can target protective immune responses associated with recognition. The same knowledge can support diagnostic tools and prevention strategies by identifying molecular features that distinguish infection-related interactions from defensive host signaling.