Coxiella Burnetii
Coxiella Burnetii - Related Videos
11:44
Generation and Multi-phenotypic High-content Screening of Coxiella burnetii Transposon Mutants
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Cited by 28 •
2015
Coxiella burnetii is an obligate intracellular Gram-negative bacterium responsible for the zoonotic disease Q fever. Here we describe methods for the generation of Coxiella fluorescent transposon mutants as well as the automated identification and analysis of the resulting internalization, replication and cytotoxic phenotypes.
07:27
The Development of Lyophilized Loop-mediated Isothermal Amplification Reagents for the Detection of Coxiella burnetii
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Cited by 7 •
2016
We described here a simple loop-mediated isothermal amplification (LAMP) method using lyophilized reagents for the detection of C. burnetii in patient samples.
10:29
Applying Fluorescence Resonance Energy Transfer (FRET) to Examine Effector Translocation Efficiency by Coxiella burnetii during siRNA Silencing
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Cited by 15 •
2016
Investigating the interactions between bacterial pathogens and their hosts is an important area of biological research. Here, we describe the necessary techniques to measure effector translocation by Coxiella burnetii during siRNA gene silencing using BlaM substrate.
05:13
Assessment of Intracellular Growth of Coxiella Mutants within Eukaryotic Cells
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2025
This video demonstrates a method for assessing the intracellular growth of GFP-tagged Coxiella mutants within cultured epithelial cells. The mutant phenotype is visualized using immunostaining and epifluorescence microscopy, allowing the study of the effect of the mutation on intracellular growth.
02:29
Establishing Bacterial Infection in Drosophila Larvae
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2026
Source: Hiroyasu, A., D et. al., Extraction of Hemocytes from Drosophila melanogaster Larvae for Microbial Infection and Analysis. J. Vis. Exp. (2018)This video demonstrates the procedure for establishing a bacterial infection in Drosophila larvae by placing them into a bacterial droplet and pricking them with a tungsten needle. The larvae are then incubated on a grooved, nutrient-rich agar plate to study host-pathogen interactions.
FAQs
The infectious small-cell variant is adapted to withstand environmental stress before reaching a host. After entering host cells, it changes into a replicative form, linking environmental persistence with intracellular growth. This transition is central to understanding how Coxiella burnetii moves between transmission outside the host and multiplication within a cellular compartment.
The acidic, lysosome-like vacuole provides the intracellular setting in which the organism's replicative form develops. Its importance lies in connecting a host-cell compartment normally associated with lysosomal characteristics to bacterial growth. Studying this relationship helps explain how an obligate intracellular pathogen adapts to, and persists within, host cells.
Coxiella burnetii can persist in macrophages while evading aspects of host defense, making the host cell more than a passive location for infection. This interaction gives researchers a way to examine how bacterial adaptation and host-cell responses influence persistence. It also helps connect cellular mechanisms with the biology of Q fever.
These forms represent different functional states. The small-cell variant is associated with environmental stress resistance and entry into host cells, whereas the replicative form develops after entry and supports growth in the acidic, lysosome-like vacuole. Considering both states clarifies how C. burnetii balances transmission-related survival with intracellular persistence.
Research on this bacterium can address bacterial adaptation, host-cell interactions, and mechanisms that permit persistence in macrophages. Because its life cycle links environmental stress, cellular entry, intracellular transformation, and replication, it provides a focused system for studying how a pathogen adjusts to sharply different conditions during infection.
Livestock are relevant because the organism's transmission to people is linked to contaminated aerosols and pathogen spread from animals. This makes Coxiella burnetii important for examining zoonotic transmission, especially how environmental release and inhalation connect animal-associated infection with human Q fever and inform prevention research.
Studying C. burnetii contributes to Q fever research across prevention, diagnosis, and treatment. The organism's environmental survival, intracellular transformation, replication in a specialized vacuole, and persistence in macrophages provide biological context for understanding the disease and developing research approaches aimed at controlling it.