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Complementary Use of Microscopic Techniques and Fluorescence Reading in Studying Cryptococcus-Amoeba Interactions
Published on: June 22, 2019
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Complementary Use of Microscopic Techniques and Fluorescence Reading in Studying Cryptococcus-Amoeba Interactions
Uju L Madu1, Olihile M Sebolai2
1Department of Microbial, Biochemical and Food Biotechnology, University of the Free State.
Journal of Visualized Experiments : Jove
|July 9, 2019
Summary
Amoeba serve as a model for macrophages, using phagocytosis to study Cryptococcus infection. This research visualizes and quantifies cryptococcal cell uptake by amoeba, offering insights into cellular interactions.
Area of Science:
- Microbiology
- Cell Biology
- Immunology
Background:
- Cryptococcus infection poses a significant health challenge.
- Macrophages are key immune cells involved in phagocytosing pathogens like Cryptococcus.
- Amoeba, natural predators of Cryptococcus, can serve as a model for macrophage phagocytosis.
Purpose of the Study:
- To simulate Cryptococcus infection using amoeba as a model for macrophages.
- To visualize and quantify the interaction between Cryptococcus and amoeba.
- To understand the behavior and fate of cryptococcal cells after internalization by phagocytic cells.
Main Methods:
- Confocal laser-scanning microscopy to capture images of cryptococcal-amoeba interactions.
- Electron microscopy to reveal ultrastructural details of internalized cryptococcal cells.
- Quantification of amoeba's internalization efficiency using relative fluorescence units.
Main Results:
- Visual evidence of cryptococcal cells being internalized by amoeba.
- Ultrastructural details of cryptococcal cells within amoeba food vacuoles.
- Quantitative data on the efficiency of cryptococcal cell uptake by amoeba.
Conclusions:
- Amoeba effectively model macrophage phagocytosis of Cryptococcus.
- Combined microscopy and quantitative analysis provide critical insights into cellular interactions.
- This approach aids in understanding pathogen fate within phagocytic cells.
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