Intestinal CXCR6+ ILC3s migrate to the kidney and exacerbate renal fibrosis via IL-23 receptor signaling enhanced by PD-1 expression.
Immunity
; 57(6): 1306-1323.e8, 2024 Jun 11.
Article
in En
| MEDLINE
| ID: mdl-38815582
ABSTRACT
Group 3 innate lymphoid cells (ILC3s) regulate inflammation and tissue repair at mucosal sites, but whether these functions pertain to other tissues-like the kidneys-remains unclear. Here, we observed that renal fibrosis in humans was associated with increased ILC3s in the kidneys and blood. In mice, we showed that CXCR6+ ILC3s rapidly migrated from the intestinal mucosa and accumulated in the kidney via CXCL16 released from the injured tubules. Within the fibrotic kidney, ILC3s increased the expression of programmed cell death-1 (PD-1) and subsequent IL-17A production to directly activate myofibroblasts and fibrotic niche formation. ILC3 expression of PD-1 inhibited IL-23R endocytosis and consequently amplified the JAK2/STAT3/RORγt/IL-17A pathway that was essential for the pro-fibrogenic effect of ILC3s. Thus, we reveal a hitherto unrecognized migration pathway of ILC3s from the intestine to the kidney and the PD-1-dependent function of ILC3s in promoting renal fibrosis.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Fibrosis
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Lymphocytes
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Signal Transduction
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Cell Movement
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Receptors, Interleukin
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Programmed Cell Death 1 Receptor
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Receptors, CXCR6
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Kidney
Limits:
Animals
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Humans
Language:
En
Journal:
Immunity
Journal subject:
ALERGIA E IMUNOLOGIA
Year:
2024
Document type:
Article
Affiliation country:
Country of publication: