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Updated: Feb 11, 2026
A Rat Orthotopic Renal Transplantation Model for Renal Allograft Rejection
Published on: February 2, 2022
Urinary transcriptomics reveals patterns associated with subclinical injury of the renal allograft
Pierre Galichon1,2,3, Yi-Chun Xu-Dubois2,4, David Buob1,2,5
1Sorbonne Universités, UPMC Univ Paris 06, UMR_S1155, Paris, France.
Aim:
Subclinical pathological features in renal allograft biopsies predict poor outcomes, and noninvasive biomarkers are wanted. RNA quantification in urine predicts overt rejection. We hypothesized that a whole transcriptome analysis would be informative, even for discrete injury.
Patients & Methods:
We performed an mRNA microarray with an optimized normalization method on 26 urinary cell pellets to study renal partial epithelial to mesenchymal transition (pEMT) in stable kidney allografts.
Results & Conclusion:
Unbiased pathway analysis revealed immune response as the main underlying biological process. In a subgroup of pristine biopsies, isolated pEMT was associated with reduced metabolic functions. Thus, pEMT translates into specific urinary mRNA patterns, in other words, increased inflammation and decreased metabolic functions. Deposited in Gene Expression Omnibus (GSE89652).
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