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Friend or foe? IFNλ drives fibrosis
1Harvard Medical School, Boston Children's Hospital , Boston, MA, USA.
The Journal of Experimental Medicine
|July 6, 2026
Summary
Type III interferons (IFNλ) are immune mediators primarily acting at mucosal surfaces. New research shows IFNλ also signals in kidney fibroblasts, contributing to renal fibrosis.
Area of Science:
- Immunology
- Cell Biology
- Renal Medicine
Background:
- Type III interferons (IFNλ) are key immune regulators.
- IFNλ predominantly signals in epithelial and immune cells at mucosal sites.
Purpose of the Study:
- To investigate the role of IFNλ beyond mucosal immunity.
- To determine if IFNλ influences kidney cells and renal fibrosis.
Main Methods:
- The study utilized cell-based assays and analyses of kidney tissues.
- Investigated the signaling pathways activated by IFNλ in kidney fibroblasts.
Main Results:
- IFNλ signaling was detected in kidney fibroblasts.
- IFNλ activation in these cells is linked to the progression of renal fibrosis.
Conclusions:
- IFNλ has a previously unrecognized role in kidney pathophysiology.
- Targeting IFNλ signaling may offer new therapeutic strategies for renal fibrosis.
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