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Studying Inherited Immunity in a Caenorhabditis elegans Model of Microsporidia Infection
Published on: April 6, 2022
Interactions between microsporidia and other members of the microbiome
Jonathan Tersigni1, Hala Tamim El Jarkass1, Edward B James1
1Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada.
Abstract:
The microbiome is the collection of microbes that are associated with a host. Microsporidia are intracellular eukaryotic parasites that can infect most types of animals. In the last decade, there has been much progress to define the relationship between microsporidia and the microbiome. In this review, we cover an increasing number of reports suggesting that microsporidia are common components of the microbiome in both invertebrates and vertebrates. These microsporidia infections can range from mutualistic to pathogenic, causing several physiological phenotypes, including death. Infection with microsporidia often causes a disruption in the normal microbiome, with both increases and decreases of bacterial, fungal, viral, and protozoan species being observed. This impact on the microbiome can occur through upregulation and downregulation of innate immunity as well as morphological changes to tissues that impact interactions with these microbes. Other microbes, particularly bacteria, can inhibit microsporidia and have been exploited to control microsporidia infections. These bacteria can function through regulating immunity, secreting anti-microsporidia compounds, and, in engineered versions, expressing double-stranded RNA targeting microsporidia genes. We end this review by discussing potential future directions to further understand the complex interactions between microsporidia and the other members of the microbiome.
Insights
Microsporidia are common parasites that impact animal microbiomes, ranging from mutualistic to pathogenic. Certain bacteria can inhibit microsporidia, offering potential therapeutic strategies.
Area of Science:
- Microbiology
- Parasitology
- Immunology
Background:
- The microbiome comprises microbes associated with a host organism.
- Microsporidia are intracellular eukaryotic parasites infecting diverse animal hosts.
- Recent research highlights the significant relationship between microsporidia and host microbiomes.
Purpose of the Study:
- To review the prevalence and impact of microsporidia within animal microbiomes.
- To explore the spectrum of microsporidia-host interactions, from mutualism to pathogenesis.
- To discuss the role of other microbes, particularly bacteria, in modulating microsporidia infections.
Main Methods:
- Literature review of studies on microsporidia and microbiome interactions.
- Analysis of reports on microsporidia prevalence in invertebrates and vertebrates.
- Examination of mechanisms by which microsporidia affect microbiome composition and host immunity.
Main Results:
- Microsporidia are frequently detected components of invertebrate and vertebrate microbiomes.
- Microsporidia infections can cause significant microbiome dysbiosis, altering microbial diversity.
- Host immune responses and tissue morphology are modulated by microsporidia, influencing microbial interactions.
Conclusions:
- Microsporidia exert complex influences on host microbiomes, with implications for host health.
- Bacterial species demonstrate inhibitory effects against microsporidia through various mechanisms.
- Future research should focus on elucidating the intricate interactions within the microsporidia-microbiome ecosystem.
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