Zebrafish Embryo Infection
Zebrafish Embryo Infection - Related Videos
11:18
Infection of Zebrafish Embryos with Intracellular Bacterial Pathogens
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Cited by 234 •
2012
Transparent zebrafish embryos have proved useful model hosts to visualize and functionally study interactions between innate immune cells and intracellular bacterial pathogens, such as Salmonella typhimurium and Mycobacterium marinum. Micro-injection of bacteria and multi-color fluorescence imaging are essential techniques involved in the application of zebrafish embryo infection models.
02:46
A Phage Therapy against Pseudomonas aeruginosa Infection in Zebrafish Embryos
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2025
The video demonstrates the phage therapy technique targeting Pseudomonas aeruginosa infection in cystic fibrosis zebrafish embryos. Phage therapy effectively diminishes bacterial load and mitigates proinflammatory immune responses in CF zebrafish embryos infected with bacteria, leading to reduced CF embryo lethality.
03:12
In Vivo Analysis of Implant-Associated Bacterial Infections Using Zebrafish Embryos
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2025
Source: Zhang, X. et. al., A Zebrafish Embryo Model for In Vivo Visualization and Intravital Analysis of Biomaterial-associated Staphylococcus aureus Infection. J. Vis. Exp. (2019)This video demonstrates a zebrafish embryo model for studying infections linked to implanted biomaterials. Injecting Staphylococcus aureus with polystyrene microspheres enhances bacterial survival, confirming the infection-promoting role of implanted materials.
02:39
Fluorescence Imaging of Biomaterial-Associated Bacterial Infection in Zebrafish Embryos
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2025
Source: Zhang, X., et al. A Zebrafish Embryo Model for In Vivo Visualization and Intravital Analysis of Biomaterial-associated Staphylococcus aureus Infection. J. Vis. Exp. (2019)This video demonstrates fluorescence imaging of zebrafish embryos injected with Staphylococcus aureus, enabling quantification of infection progression and bacterial distribution to assess the impact of biomaterial microspheres on host-pathogen interactions in vivo.
02:29
Isolation and Cultivation of Bacteria from Zebrafish Embryos to Assess Infection Load
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2026
Source: Bernut, A., et al., Deciphering and Imaging Pathogenesis and Cording of Mycobacterium abscessus in Zebrafish Embryos. J. Vis. Exp. (2015).This video demonstrates a protocol for isolating and quantifying Mycobacterium abscessus from an infected zebrafish embryo. The procedure involves embryo euthanasia, tissue lysis, and homogenization to release the bacteria, followed by centrifugation and resuspension in a surfactant buffer. Finally, the bacterial suspension is serially diluted, plated...
FAQs
Introducing a pathogen into a defined embryonic compartment gives researchers a consistent location from which to examine infection. That spatial control helps connect pathogen presence with subsequent spread, leukocyte recruitment, inflammatory signaling, and antimicrobial responses. It also makes comparisons of infection outcomes more interpretable when researchers test different pathogens, virulence factors, or host genetic conditions.
Leukocyte recruitment, inflammatory signaling, and antimicrobial responses provide complementary indicators of host defense. Researchers can follow where immune cells move, how inflammatory activity develops, and how the embryo responds to the invading organism. Examining these processes together helps distinguish pathogen growth or spread from the host reactions that may contain infection or contribute to disease.
Embryonic transparency permits real-time visualization of pathogen spread and immune-cell behavior without relying only on endpoint observations. Genetic manipulation adds a way to investigate the contribution of specific host genes to infection responses. Together, these features connect cellular behavior with genetic regulation, supporting mechanistic studies of host defense and disease processes.
A typical study selects a pathogen and introduces it into a defined embryonic compartment, commonly by microinjection. Researchers then follow pathogen distribution, immune-cell behavior, inflammatory signaling, antimicrobial responses, and overall infection outcomes. The resulting observations can be compared across pathogens, host genetic conditions, virulence factors, or candidate treatments to identify meaningful differences.
Researchers can evaluate how pathogens spread through the embryo, how leukocytes are recruited, and how inflammatory and antimicrobial responses develop. These observations also support analysis of disease processes and infection outcomes. Because the system permits real-time visualization, investigators can relate the timing and location of host responses to the progression of infection.
The approach can accommodate investigations of bacteria, viruses, fungi, and parasites. Using multiple pathogen classes broadens comparisons of how different infectious agents interact with host defenses and produce disease-related outcomes. It also allows researchers to examine pathogen-specific virulence factors and determine whether particular host responses or potential treatments act across distinct types of infection.
This approach is useful for comparative immunology, antimicrobial discovery, vaccine research, and analysis of infection outcomes. Researchers can test host genes, virulence factors, and potential treatments while directly observing infection and immune behavior. Its findings can help prioritize questions and interventions before studies advance to more complex experimental systems.