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Nlrp3-inflammasome activation in non-myeloid-derived cells aggravates diabetic nephropathy
Otto Von Guericke University, Germany; University of Health Science, Pakistan.
Otto Von Guericke University, Germany; Heidelberg University, Germany.
Otto Von Guericke University, Germany.
Otto Von Guericke University, Germany; Huazhong University of Science and Technology, Peoples R China.
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2015 (English)In: Kidney International, ISSN 0085-2538, E-ISSN 1523-1755, Vol. 87, no 1, 74-84 p.Article in journal (Refereed) Published
Abstract [en]

Diabetic nephropathy is a growing health concern with characteristic sterile inflammation. As the underlying mechanisms of this inflammation remain poorly defined, specific therapies targeting sterile inflammation in diabetic nephropathy are lacking. Intriguingly, an association of diabetic nephropathy with inflammasome activation has recently been shown, but the pathophysiological relevance of this finding remains unknown. Within glomeruli, inflammasome activation was detected in endothelial cells and podocytes in diabetic humans and mice and in glucose-stressed glomerular endothelial cells and podocytes in vitro. Abolishing Nlrp3 or caspase-1 expression in bone marrow-derived cells fails to protect mice against diabetic nephropathy. Conversely, Nlrp3-deficient mice are protected against diabetic nephropathy despite transplantation of wild-type bone marrow. Pharmacological IL-1R antagonism prevented or even reversed diabetic nephropathy in mice. Mitochondrial reactive oxygen species (ROS) activate the Nlrp3 inflammasome in glucose or advanced glycation end product stressed podocytes. Inhibition of mitochondrial ROS prevents glomerular inflammasome activation and nephropathy in diabetic mice. Thus, mitochondrial ROS and Nlrp3-inflammasome activation in non-myeloid-derived cells aggravate diabetic nephropathy. Targeting the inflammasome may be a potential therapeutic approach to diabetic nephropathy.

Place, publisher, year, edition, pages
Nature Publishing Group: Open Access Hybrid Model Option A , 2015. Vol. 87, no 1, 74-84 p.
Keyword [en]
diabetic nephropathy; endothelial cell; inflammasome; mitochondrial ROS; Nlrp3; podocyte
National Category
Clinical Medicine
URN: urn:nbn:se:liu:diva-113734DOI: 10.1038/ki.2014.271ISI: 000346977900011PubMedID: 25075770OAI: diva2:784597

Funding Agencies|Deutsche Forschungsgemeinschaft [IS 67/2-4, TH 1789/1-1, BI 1281/3-1]; EFSD (European Foundation for the Study of Diabetes); DDS (Deutsche Diabetes Stiftung); Hopp Stiftung; Stiftung fur Pathobiochemie und Molekulare Diagnostik; ERC StG; BioSysNet Research group

Available from: 2015-01-30 Created: 2015-01-29 Last updated: 2015-02-24

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