Role of mini-host models in the study of medically important fungi
Author:
Chamilos G, Lionakis MS, Lewis RE, Kontoyiannis DP.
Date: 9 January 2007
Abstract:
Mini-host models have emerged as simple experimental systems to study the pathogenesis and host innate immune responses in fungal invaders and also to test drug efficacy against these organisms. A growing number of medically important fungi, including Aspergillus spp, Candida spp, Cryptococcus spp, and species in the class Zygomycetes, have been shown to infect and kill invertebrates such as roundworms, fruit flies, and wax moths. These studies have shown that several genes implicated in the virulence of fungi in mammalian models also have a similarly important pathogenic role in mini-host organisms. These mini-host models provide a unique opportunity of simultaneously exploring the molecular mechanisms of fungal pathogenicity and candidate agents with antifungal activity. Furthermore, the fact that some of these mini-hosts have well-defined genetics and conserved innate immunity offers the advantage of a comprehensive analysis of the molecular aspects of host immune response. We examine the relevance, advantages, and pitfalls of experimental systems of fungal infections in various mini-hosts and compare them with what is known in experimental systems in mammalian animal models.
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