Related Experiment Video
Updated: May 22, 2025
12:59
Isolation and Th17 Differentiation of Naïve CD4 T Lymphocytes
Published on: September 26, 2013
34.4K
Tuft cell IL-17RB restrains IL-25 bioavailability and reveals context-dependent ILC2 hypoproliferation
Xiaogang Feng1, Tilde Andersson1, Pascal Flüchter1
1Institute of Physiology, University of Zurich, Zurich, Switzerland.
Nature Immunology
|March 13, 2025
Summary
Tuft cells detect microbes and produce interleukin-25 (IL-25), activating group 2 innate lymphoid cells (ILC2s). Tuft cell IL-17RB regulates IL-25, preventing overstimulation and ILC2 hypoproliferation during helminth infections.
Area of Science:
- Immunology
- Cell Biology
- Microbiology
Background:
- Tuft cells and group 2 innate lymphoid cells (ILC2s) form a circuit for type 2 immune responses.
- This circuit is activated by microbial products like succinate and helminths.
Purpose of the Study:
- To elucidate the mechanistic steps in the tuft cell-ILC2 circuit.
- To understand the regulatory role of IL-17RB in tuft cells and its impact on ILC2 activation.
Main Methods:
- Investigated the role of IP3R2 and Ca2+ flux in tuft cell IL-25 production.
- Analyzed the function of IL-17RB in tuft cells and its effect on ILC2s.
- Examined ILC2 proliferation states under different stimulation conditions.
Main Results:
- Succinate triggers IL-25 production by tuft cells via IP3R2 and Ca2+ flux.
- Tuft cell IL-17RB restrains IL-25 bioavailability, preventing tonic ILC2 stimulation.
- Excessive IL-25 signaling leads to ILC2 hypoproliferation, mirroring chronic helminth infection.
Conclusions:
- The tuft cell-ILC2 circuit involves intricate regulation of IL-25 signaling.
- Tuft cell IL-17RB plays a critical role in balancing immune responses to luminal stimuli.
- Dysregulation of this circuit can lead to ILC2 hypoproliferation, relevant to chronic infections.
