Bacterial Surface Modification
Bacterial Surface Modification - Related Videos
12:31
Chemoselective Modification of Viral Surfaces via Bioorthogonal Click Chemistry
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Cited by 14 •
2012
Adenovirus particles are engineered to contain either the unnatural amino acid analogue azidohomoalanine or the azido sugar O-GlcNAz. The azide group of each is chemoselectively ligated via "click" chemistry reactions as a means of viral surface modification.
14:48
PDMS Device Fabrication and Surface Modification
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Cited by 5 •
2007
07:35
Preparation, Imaging, and Quantification of Bacterial Surface Motility Assays
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Cited by 68 •
2015
Swarming motility is influenced by physical and environmental factors. We describe a two-phase protocol and guidelines to circumvent the challenges commonly associated with swarm assay preparation and data collection. A macroscopic imaging technique is employed to obtain detailed information on swarm behavior that is not provided by current analysis techniques.
02:46
Swarming Assay for Visualizing Bacterial Surface Motility
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2025
Source: Morales-Soto, N. et. al., Preparation, Imaging, and Quantification of Bacterial Surface Motility Assays. J. Vis. Exp. (2015)This video demonstrates a swarming assay using bacteria that express green fluorescent protein to observe surface motility on soft agar. Time-lapse imaging captures coordinated expansion and tendril formation, highlighting bacterial surface motility.
03:05
Detection of Vitronectin Binding to Bacterial Surfaces using Flow Cytometry
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2025
This video demonstrates the detection of vitronectin's interaction with bacterial surface proteins. The flow-cytometry analysis measures the fluorescence signal of fluorescently labeled antibodies bound to vitronectin, confirming its presence at the bacterial surface. This technique provides insights into host-pathogen interactions and potential bacterial infection therapies.
FAQs
Chemical attachment changes the exposed interface by adding polymers, proteins, or other ligands. Genetic modification instead changes the production or display of structures such as capsules, lipopolysaccharides, and adhesins. This distinction lets investigators ask whether an observed change in adhesion, immune recognition, biofilm formation, virulence, or antimicrobial interaction results from a newly attached molecule or an altered native surface component.
These surface-exposed structures provide defined targets for examining how bacteria interact with hosts and immune defenses. Altering them can reveal relationships between surface composition, bacterial adhesion, biofilm formation, and virulence. Studying these components also helps researchers assess how particular surface changes influence recognition by immune systems or interactions with antimicrobial agents.
The outcome depends on which surface feature is altered and whether the change affects interactions with hosts, immune defenses, or antimicrobial agents. Researchers can therefore connect a particular chemical attachment or genetic change with specific phenotypes rather than treating the bacterial surface as uniform. This framing helps interpret differences in adhesion, biofilm formation, immune recognition, and virulence.
Altering exposed molecules creates a way to examine these interactions as related but separable questions. A study can focus on whether a change affects bacterial adhesion, recognition by immune defenses, or both, while also considering biofilm formation and virulence. This helps infection researchers link a defined surface change to the host-bacterium interaction under investigation.
Researchers use it to create bacterial variants with changed surface molecules or properties, then investigate consequences for adhesion, immune recognition, biofilm formation, virulence, or antimicrobial interaction. Chemical attachment supports studies centered on added polymers, proteins, or ligands, whereas genetic alteration supports studies of surface-exposed structures. The approach connects surface engineering with infection-relevant biological questions.
Surface changes can help investigators examine which bacterial features are relevant to immune recognition and guide the development of targeted diagnostics or vaccine candidates. By altering exposed polymers, proteins, ligands, capsules, lipopolysaccharides, or adhesins, researchers can evaluate surface-directed concepts in an infection context. These comparisons help assess which exposed features may be useful for further development.
Engineered surfaces can support bacterial therapeutics by changing how bacteria interact with hosts, while surface alterations can also inform strategies for antimicrobial delivery. In addition, modifying exposed features may help investigate or reduce harmful host responses. These applications extend the method beyond mechanism studies, linking surface design to therapeutic development, antimicrobial action, and control of infection-related effects.