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Fibroblasts in AKI: small army, big help.
Saiya Zhu1, Yuan Gui1, Jia-Jun Liu2
1Division of Nephrology, Department of Medicine, University of Connecticut School of Medicine, Farmington, CT 06030, USA.
Trends in Molecular Medicine
|June 11, 2025
Summary
Early fibroblast activation is key for kidney repair after acute kidney injury (AKI), not just fibrosis. Understanding fibroblast roles offers new therapeutic strategies for AKI.
Area of Science:
- Nephrology
- Cell Biology
- Pathophysiology
Background:
- Acute kidney injury (AKI) is a severe condition with high morbidity and mortality.
- AKI pathogenesis involves tubular injury, vascular damage, and inflammation.
- Fibroblast roles in kidney injury are traditionally linked to fibrosis.
Purpose of the Study:
- To explore the origins and heterogeneity of fibroblasts in the kidney.
- To elucidate the multifaceted functions of fibroblasts in kidney repair.
- To review therapeutic strategies targeting fibroblasts for AKI prevention and mitigation.
Main Methods:
- Literature review and synthesis of existing research on kidney fibroblasts.
- Analysis of studies investigating fibroblast activation in AKI models.
- Examination of therapeutic interventions targeting fibroblast pathways.
Main Results:
- Fibroblasts arise from multiple origins, exhibiting significant heterogeneity.
- Early fibroblast activation is crucial for initiating kidney repair mechanisms.
- Fibroblasts possess diverse functions beyond matrix deposition, impacting inflammation and regeneration.
Conclusions:
- Fibroblast activation is a critical, often overlooked, early event in kidney repair.
- Challenging the fibrosis-centric view, fibroblasts play a reparative role in AKI.
- Targeting fibroblast heterogeneity and function presents promising therapeutic avenues for AKI.
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