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Updated: May 25, 2026
Live-cell Video Microscopy of Fungal Pathogen Phagocytosis
Published on: January 9, 2013
Interactions between macrophages and cell wall oligosaccharides of Candida albicans
Héctor M Mora-Montes1, Christopher McKenzie, Judith M Bain
1Departamento de Biología, Universidad de Guanajuato, Guanajuato, México.
Abstract:
The fungal cell wall is the armour that protects the cell from changes in the external environment. The wall of Candida albicans, an opportunistic human pathogen, is also the immediate point of contact with the host immune system and contains most of the pathogen-associated molecular patterns recognised by innate immune cells. Along with the use of mutants altered in cell wall composition, the isolation and purification of cell wall components has proven useful in the identification of receptors involved in the sensing of these molecules, and assessment of the relative relevance of ligand-receptor interactions during the sensing of C. albicans by the immune system. Here, we describe protocols for the isolation of cell wall chitin, N-linked and O-linked mannans from C. albicans, and how they can subsequently be used to assess immunological activities such as phagocytosis and cytokine production by myeloid cells.
Insights
This study details methods for isolating fungal cell wall components from Candida albicans. These components help researchers understand how immune cells detect and respond to this opportunistic pathogen.
Area of Science:
- Mycology
- Immunology
- Biochemistry
Background:
- The fungal cell wall of Candida albicans is crucial for pathogen survival and host immune interaction.
- It contains pathogen-associated molecular patterns (PAMPs) recognized by innate immune cells.
- Understanding these interactions is key to combating fungal infections.
Purpose of the Study:
- To provide protocols for isolating key cell wall components from Candida albicans.
- To enable the assessment of immune cell responses to these purified components.
- To clarify the role of specific cell wall molecules in host-pathogen recognition.
Main Methods:
- Isolation and purification of chitin from the Candida albicans cell wall.
- Extraction and purification of N-linked and O-linked mannans.
- Utilizing purified components to stimulate myeloid cells in vitro.
- Assessing immunological activities including phagocytosis and cytokine production.
Main Results:
- Established protocols for obtaining pure chitin, N-linked mannans, and O-linked mannans.
- Demonstrated the utility of these components in immunological assays.
- Provided a framework for studying ligand-receptor interactions in Candida albicans recognition.
Conclusions:
- The described methods facilitate the study of fungal cell wall components and their immunological relevance.
- Accurate isolation of cell wall molecules is essential for understanding host-pathogen dynamics.
- This work supports further research into immune sensing of Candida albicans.
