Vector Pathogen Interaction
Vector Pathogen Interaction - Related Videos
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.
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.
09:17
Use of an Optical Trap for Study of Host-Pathogen Interactions for Dynamic Live Cell Imaging
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Cited by 8 •
2011
A method is described to individually select, manipulate, and image live pathogens using an optical trap coupled to a spinning disk microscope. The optical trap provides spatial and temporal control of organisms and places them adjacent to host cells. Fluorescence microscopy captures dynamic intercellular interactions with minimal perturbation to cells.
02:43
Preparing a Hemolytic Staphylococcus aureus Culture for Host-Pathogen Interaction Studies
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2026
Source: Behera, R.K. et. al., A Fluorescence-based Method to Study Bacterial Gene Regulation in Infected Tissues. J. Vis. Exp. (2019)This video demonstrates the preparation of hemolytic Staphylococcus aureus cultures to standardize bacterial growth and achieve metabolic synchronization for host-pathogen interaction studies.
FAQs
After ingestion during feeding, the pathogen must remain viable during digestion, cross internal tissue barriers, and then replicate or mature within the vector. It must also reach the salivary glands or another transmission site. Failure at any stage can prevent the vector from transmitting the pathogen during a later feeding event.
Localization at a transmission site determines whether the pathogen can leave the vector during a subsequent bite or feeding event. A pathogen may survive or develop inside the vector without becoming transmissible if it cannot reach the relevant exit route. This distinction helps explain why pathogen presence alone does not establish vector competence.
Vector competence reflects the combined effects of pathogen traits and vector physiology. Pathogen characteristics influence survival, development, and movement through vector tissues, while vector biology affects digestion, tissue barriers, and access to transmission sites. Environmental conditions also modify these interactions, so competence can vary across biological and environmental settings.
Analysis follows the pathogen through successive stages: acquisition during vector feeding, survival during digestion, passage across tissue barriers, replication or maturation, and arrival at the salivary glands or another transmission site. Researchers can use this sequence to identify where transmission succeeds or fails and to connect each stage with vector competence.
These interactions provide a biological basis for interpreting whether a vector can contribute to pathogen spread. Surveillance informed by vector competence can examine the ability of pathogens to persist, develop, and reach a transmission site within vectors. Such information helps explain observed transmission patterns and supports assessment of infection risk across relevant vector-host systems.
Transmission patterns reflect more than pathogen presence in a host or vector. They depend on whether the pathogen completes the internal sequence required for transmission and on how vector physiology, pathogen traits, and environmental conditions affect that sequence. Studying these relationships helps connect biological mechanisms with variation in where and how infections spread.
Research can guide strategies intended to reduce infections caused by vector-borne pathogens. By identifying stages that limit survival, development, tissue passage, or arrival at a transmission site, investigators gain information about the biological conditions underlying spread. The same knowledge supports disease surveillance and helps interpret which vector-pathogen combinations pose transmission concerns.