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PAD4 promotes macrophage migration to aggravate tubulointerstitial injury in diabetic kidney disease [RNA-seq]

GSE279745 Mus musculus Expression profiling by high throughput sequencing 8 samples Submitted 2025/10/16 Platform GPL23479
Summary
Peptidyl Arginine Deiminase 4 (PAD4) is an enzyme predominantly expressed in myeloid cells, and its role in diabetic kidney disease (DKD) remains unknown. We functionally characterized 48 PAD4 variants identified among 469,779 participants from UK Biobank and examined their associations with renal function. We found that 32 PAD4 variants causes loss of function, which was significantly associated with higher estimated glomerular filtration rate. We observed an enhanced PAD4 expression in renal tubulointerstitium among DKD patients and animal models of DKD. Both PAD4 deficiency in macrophages and PAD4 inhibitor GSK484 significantly alleviated renal tubulointerstitial injury by reducing macrophage infiltration in diabetic mice models. Mechanistically, PAD4 interacted with p65 to promote its binding to Cmklr1 promoter and induce the expression of Cmklr1, which led to an enhanced macrophage migration. These findings demonstrate the crucial role of PAD4-mediated macrophage migration in tubulointerstitial injury of DKD.
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Also filed as BioProject PRJNA1174192 and SRA study SRP539193. Searching any of these in the dataset finder brings you back here.

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