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Renal fibrosis is a common pathway of chronic kidney disease (CKD) progression involving primary kidney injury and kidney diseases. Group 2 innate lymphoid cells (ILC2s) mediate type 2 immune responses irrespective of antigen presentation and play a reno-protective role in kidney injury and disease. In the present study, we observed a decrease in kidney-resident ILC2s in CKD and found that enrichment of ILC2s in the kidney ameliorates renal fibrosis. In CKD kidney, ILC2s preferentially produced IL-13 over IL-5 in response to IL-33 stimulation, regardless of ST2L expression. Moreover, GATA3 expression was decreased in ILC2s, and T-bet+ ILC1s and RORγt+ ILC3s were increased in CKD kidney. Adoptive transfer of kidney ILC2s into adenine-induced CKD model mouse improved renal function and fibrosis. Renal fibroblasts cultured with IL33-activated kidney ILC2s suppressed myofibroblast trans-differentiation through Acta2 and Fn-1 regulation. These results suggest that kidney ILC2s prevent CKD progression via improvement of renal fibrosis. Our findings also suggest that ILC2s may contribute to the development of new therapeutic agents and strategies for tissue fibroses.
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http://dx.doi.org/10.1016/j.cellimm.2024.104828 | DOI Listing |
J Nephrol
September 2025
Institute of Nephrology, Madras Medical College, Chennai, India.
Background: IgA nephropathy is a disease with a highly variable natural history, for which there is an increasing understanding of the role of complement activation in its pathogenesis and progression. We aimed to assess the clinical and prognostic implications of C4d staining in the kidney biopsy of IgA nephropathy patients.
Methods: This was a retrospective observational study wherein the medical records of IgA nephropathy patients were reviewed and baseline characteristics, kidney biopsy findings, treatment response and follow-up data were noted.
Arch Esp Urol
August 2025
Department of Nephrology, The Fourth Hospital of Changzhou, 231002 Changzhou, Jiangsu, China.
Objective: To explore the impact of Tripterygium wilfordii glycosides (TWG) on glomerulosclerosis within a rat model of chronic kidney disease (CKD), as well as the role of the transforming growth factor-β1 (TGF-β1)/Smad signaling pathway in this mechanism.
Methods: Twenty-four clean Sprague-Dawley rats were divided into Sham group (n = 8), model group (n = 8) and TWG group (n = 8). Adriamycin nephropathy (ADRN) rat model was established by jugular vein injection of adriamycin (ADR).
Biochem Pharmacol
September 2025
School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China. Electronic address:
Endothelial-to-mesenchymal transition (EndMT) is a critical contributor of renal fibrosis in diabetic kidney disease (DKD). Asiatic acid (AA), a natural triterpenoid compound, exhibits notable endothelial protective and anti-fibrotic properties; however, its impact on EndMT in DKD remains unclear. This study aimed to investigate the therapeutic effect of AA against EndMT in DKD and the underlying mechanisms.
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August 2025
Department of Clinical Immunology and Rheumatology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India.
Peritoneal Dialysis (PD) requires a healthy and functional peritoneal membrane for adequate ultrafiltration and fluid balance, making it a vital treatment for patients with end-stage renal disease (ESRD). The spectrum of PD-associated peritoneal fibrosis encompasses a diverse range of collective mechanisms: peritoneal fibrogenesis, epithelial to mesenchymal transition (EMT), peritonitis, angiogenesis, sub-mesothelial immune cells infiltration, and collagen deposition in the sub-mesothelial compact zone of the membrane that accompany deteriorating membrane function. In this narrative review, we summarize the repertoire of current knowledge about the structure, function, and pathophysiology of the peritoneal membrane, focusing on biomolecular mechanisms and signalling pathways that potentiate the development and progression of peritoneal fibrosis.
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September 2025
Department of Physiology, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
Fibroblasts can be transformed into myofibroblasts under pro-fibrotic conditions, which are characterized by increased contractility and reduced matrix degradation. The relationship between contractile activity and matrix degradation is not fully understood. To mimic physiological conditions, fibroblasts were cultured on a collagen gel with low rigidity.
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