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Innate Immune Receptors and Defense Against Primary Pathogenic Fungi
Theo N Kirkland1, Joshua Fierer1,2
1Division of Infectious Diseases, Departments of Pathology and Medicine, School of Medicine, University of California San Diego, San Diego, CA 92037, USA.
Abstract:
The innate immune system is critical for natural resistance to all pathogenic microorganisms, including fungi. The innate response plays a vital role in resistance to infections before the antigen-specific immune response and also influences antigen-specific adaptive immunity. There are many different receptors for the innate immune response to fungi, and some receptors have been found to play a significant role in the response to human infections with opportunistic fungi. Most human infections are caused by opportunistic fungi, but a small number of organisms are capable of causing infections in normal hosts. The primary pathogenic fungi that cause invasive infections include Blastomyces spp., Cryptococcus gattii, Coccidioides spp., Histoplasma spp., and Paracoccidioides spp. In this review of innate immune receptors that play a role in infections caused by these organisms, we find that innate immunity differs between organisms.
Insights
The innate immune system is crucial for fighting fungal infections. This review highlights how different innate immune receptors respond to various pathogenic fungi, revealing distinct immune strategies against these organisms.
Area of Science:
- Immunology
- Mycology
- Infectious Diseases
Background:
- The innate immune system provides essential defense against pathogenic microorganisms, including fungi.
- It plays a critical role in early infection control and influences adaptive immunity.
- Opportunistic fungi cause most human infections, but some can infect healthy individuals.
Purpose of the Study:
- To review innate immune receptors involved in human infections caused by primary pathogenic fungi.
- To understand the diversity of innate immune responses to different fungal species.
Main Methods:
- Literature review focusing on innate immunity and pathogenic fungi.
- Analysis of studies on innate immune receptors in the context of fungal infections.
Main Results:
- Innate immunity plays a significant role in combating fungal infections.
- Specific innate immune receptors are crucial for responding to opportunistic and primary pathogenic fungi.
- Significant differences exist in how the innate immune system combats various fungal pathogens.
Conclusions:
- Innate immune responses vary considerably among different fungal species.
- Understanding these differences is key to developing effective antifungal strategies.
- Targeting specific innate immune pathways could enhance treatment for invasive fungal infections.
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