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Published on: July 29, 2014
Roles of pattern recognition receptors in response to fungal keratitis
Xiaolong Fang1, Huifang Lian2, Shihao Bi3
1The School of Medicine, Nankai University, Tianjin 300071, China; Tianjin Eye Hospital, Tianjin Key Lab of Ophthalmology and Visual Science, Tianjin 300020, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
Abstract:
Fungal keratitis is one of the leading causes of blindness worldwide, which has become an increasingly serious threat to public ocular health, but no effective treatment strategies are available now. Pattern recognition receptors (PRRs) of the innate immune system are the first line of host defense against fungal infections. They could recognize pathogen-associated molecular patterns (PAMPs) or damage-associated molecular patterns (DAMPs) and trigger an array of inflammatory responses. Over the last decades, research has resulted in significant progress regarding the roles of PRRs in fungal keratitis. This review will highlight the importance of several pattern recognition receptors (C-type lectin-like receptors, Toll-like receptors, and NOD-like receptors) in regulating the innate immunity under fungal keratitis and describe the crosstalk and collaboration in PRRs contributing to disease pathology. Meanwhile, some potential therapy-based PRRs against corneal fungal infections are discussed.
Insights
Pattern recognition receptors (PRRs) are crucial for innate immunity against fungal keratitis, a leading cause of blindness. Understanding PRR roles and interactions offers potential therapeutic targets for corneal fungal infections.
Area of Science:
- Immunology
- Ophthalmology
- Mycology
Background:
- Fungal keratitis is a major global cause of blindness with limited treatment options.
- Pattern recognition receptors (PRRs) are key components of the innate immune system's defense against fungal pathogens.
- PRRs recognize pathogen-associated molecular patterns (PAMPs) and damage-associated molecular patterns (DAMPs), initiating inflammatory responses.
Purpose of the Study:
- To review the critical roles of specific PRRs, including C-type lectin-like receptors, Toll-like receptors, and NOD-like receptors, in fungal keratitis.
- To elucidate the crosstalk and collaborative mechanisms among PRRs in the context of fungal keratitis pathogenesis.
- To discuss potential therapeutic strategies targeting PRRs for treating corneal fungal infections.
Main Methods:
- Literature review focusing on the immunological mechanisms of fungal keratitis.
- Analysis of research on pattern recognition receptors (PRRs) and their involvement in host defense against fungi.
- Synthesis of current knowledge on PRR signaling pathways and their contribution to disease.
Main Results:
- PRRs play a significant role in the innate immune response to fungal keratitis.
- Specific PRRs like CLRs, TLRs, and NLRs are integral to immune regulation in the cornea during fungal infection.
- Interactions and crosstalk between different PRRs are vital for disease progression and immune defense.
Conclusions:
- Pattern recognition receptors are central to innate immunity against fungal keratitis.
- Understanding PRR function and interplay is essential for developing effective treatments.
- Targeting PRRs presents a promising avenue for novel therapeutic interventions against fungal corneal infections.
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