Urinary peptidomics provides a noninvasive humanized readout of diabetic nephropathy in mice

Klein, J., Ramirez-Torres, A., Ericsson, A., Huang, Y., Breuil, B., Siwy, J., Mischak, H., Peng, X.-R., Bascands, J.-L. and Schanstra, J. P. (2016) Urinary peptidomics provides a noninvasive humanized readout of diabetic nephropathy in mice. Kidney International, 90(5), pp. 1045-1055. (doi: 10.1016/j.kint.2016.06.023) (PMID:27528550)

Abstract

Nephropathy is among the most frequent complications of diabetes and the leading cause of end-stage renal disease. Despite the success of novel drugs in animal models, the majority of the subsequent clinical trials employing those drugs targeting diabetic nephropathy failed. This lack of translational value may in part be due to an inadequate comparability of human disease and animal models that often capture only a few aspects of disease. Here we overcome this limitation by developing a multimolecular noninvasive humanized readout of diabetic nephropathy based on urinary peptidomics. The disease-modified urinary peptides of 2 type 2 diabetic nephropathy mouse models were identified and compared with previously validated urinary peptide markers of diabetic nephropathy in humans to generate a classifier composed of 21 ortholog peptides. This classifier predicted the response to disease and treatment with inhibitors of the renin-angiotensin system in mice. The humanized classifier was significantly correlated with glomerular lesions. Using a human type 2 diabetic validation cohort of 207 patients, the classifier also distinguished between patients with and without diabetic nephropathy, and their response to renin-angiotensin system inhibition. Thus, a combination of multiple molecular features common to both human and murine disease could provide a significant change in translational drug discovery research in type 2 diabetic nephropathy.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Mischak, Professor Harald
• Authors: Klein, J., Ramirez-Torres, A., Ericsson, A., Huang, Y., Breuil, B., Siwy, J., Mischak, H., Peng, X.-R., Bascands, J.-L., and Schanstra, J. P.
• College/School: College of Medical Veterinary and Life Sciences > School of Cardiovascular & Metabolic Health
• Journal Name: Kidney International
• Publisher: Elsevier
• ISSN: 0085-2538
• ISSN (Online): 1523-1755
• Published Online: 12 August 2016
• Copyright Holders: Copyright © 2016 International Society of Nephrology
• First Published: First published in Kidney International 90(5):1045-1055
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher