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Acridine orange stain for determining intracellular enteropathogens in HeLa cells
1Division of Microbiology, Food and Drug Administration, Washington, D.C. 20204.
Journal of Clinical Microbiology
|April 1, 1991
Abstract:
Green-fluorescent intracellular enteropathogenic bacteria were observed after infected HeLa cell monolayers were stained with acridine orange and counterstained with crystal violet at least 3 h after infection.
Insights
Green-fluorescent intracellular enteropathogenic bacteria were visualized in infected HeLa cells using acridine orange staining. This method allows for the detection of bacterial presence within host cells hours after infection.
Area of Science:
- Microbiology
- Cell Biology
Background:
- Enteropathogenic bacteria pose a significant threat to public health.
- Accurate and timely detection of intracellular bacteria is crucial for understanding infection dynamics.
Purpose of the Study:
- To develop and validate a staining method for visualizing intracellular enteropathogenic bacteria in host cells.
- To assess the feasibility of using fluorescence microscopy for bacterial detection.
Main Methods:
- HeLa cell monolayers were infected with enteropathogenic bacteria.
- Cells were stained with acridine orange, a fluorescent dye.
- Counterstaining with crystal violet was performed.
- Microscopic examination was conducted at least 3 hours post-infection.
Main Results:
- Green fluorescence indicating the presence of intracellular bacteria was observed.
- The staining method successfully visualized bacteria within HeLa cells.
- Bacterial presence was confirmed at 3 hours post-infection.
Conclusions:
- Acridine orange staining is an effective method for detecting green-fluorescent intracellular enteropathogenic bacteria.
- This technique aids in studying bacterial-host cell interactions.