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Beyond pathogen recognition: C-type lectin receptors in microbiota regulation
Morgan Greenewood1, June L Round1
1University of Utah School of Medicine, Department of Pathology, Division of Microbiology and Immunology, Huntsman Cancer Institute, Salt Lake City, UT 84211, United States of America.
Mucosal Immunology
|July 5, 2026
Summary
C-type lectin receptors (CLRs) integrate signals to determine immune responses in the gut. These pattern recognition receptors (PRRs) are crucial for maintaining balance with beneficial gut microbes, not just fighting pathogens.
Area of Science:
- Immunology
- Microbiology
- Gastroenterology
Background:
- The immune system must distinguish between commensal microbes and pathogens in the intestine.
- Pattern recognition receptors (PRRs) integrate signals to dictate immune responses.
- C-type lectin receptors (CLRs) play a unique role in sensing microbial and host-derived signals.
Purpose of the Study:
- To review recent literature on how CLRs influence the maintenance of homeostasis with the commensal microbiota.
- To highlight the role of CLRs beyond pathogen detection in regulating immune responses.
Main Methods:
- Literature review focusing on recent publications.
- Analysis of studies investigating CLR function in the context of gut microbiota homeostasis.
Main Results:
- CLRs recognize diverse ligands, including those on microbes and host-derived molecules.
- CLRs integrate signals related to microbial identity, tissue state, and environmental context.
- CLRs act as regulators, calibrating immune responses towards tolerance or defense.
Conclusions:
- CLRs are key regulators of immune homeostasis in the gut.
- Understanding CLR function is critical for deciphering host-microbe interactions.
- CLRs extend beyond pathogen recognition to modulate responses to commensal microbiota.
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