Systemic Candidiasis in Mice: New Insights From an Old Model

Area of Science:

• Mycology and Immunology
• Infectious Diseases
• Translational Medicine

Background:

• Animal models are vital for studying infection pathophysiology, antifungal drug development, and adjunctive therapies.
• The standard murine model of systemic candidiasis involves intravenous inoculation, which bypasses mucosal barriers.
• SPF mice lack prior immune exposure to Candida, unlike human patients with established mucosal colonization.

Purpose of the Study:

• To review findings from mouse models that integrate intestinal colonization with systemic candidiasis.
• To explore novel insights into host-fungal interactions and immune responses in these advanced models.
• To discuss the impact of these models on the translatability of research results to human clinical scenarios.

Main Methods:

• Review of existing literature on murine models of candidiasis.
• Focus on models incorporating both intestinal colonization and systemic fungal dissemination.
• Analysis of studies investigating host-pathogen interactions and immune responses in these combined models.

Main Results:

• Models combining intestinal colonization and systemic infection provide a more realistic simulation of human candidiasis.
• These advanced models yield novel insights into the complex interplay between the host immune system and Candida.
• Findings highlight the importance of prior mucosal exposure in shaping the host response to systemic infection.

Conclusions:

• Mouse models that mimic both colonization and systemic infection are crucial for advancing our understanding of candidiasis.
• These models enhance the relevance of preclinical findings for human patients.
• Further research using these models is essential to improve antifungal strategies and patient outcomes.