Abstract:
:Focal segmental glomerulosclerosis (FSGS) is a frequent and severe glomerular disease characterized by destabilization of podocyte foot processes. We report that transgenic expression of the microRNA miR-193a in mice rapidly induces FSGS with extensive podocyte foot process effacement. Mechanistically, miR-193a inhibits the expression of the Wilms' tumor protein (WT1), a transcription factor and master regulator of podocyte differentiation and homeostasis. Decreased expression levels of WT1 lead to downregulation of its target genes PODXL (podocalyxin) and NPHS1 (nephrin), as well as several other genes crucial for the architecture of podocytes, initiating a catastrophic collapse of the entire podocyte-stabilizing system. We found upregulation of miR-193a in isolated glomeruli from individuals with FSGS compared to normal kidneys or individuals with other glomerular diseases. Thus, upregulation of miR-193a provides a new pathogenic mechanism for FSGS and is a potential therapeutic target.
journal_name
Nat Medjournal_title
Nature medicineauthors
Gebeshuber CA,Kornauth C,Dong L,Sierig R,Seibler J,Reiss M,Tauber S,Bilban M,Wang S,Kain R,Böhmig GA,Moeller MJ,Gröne HJ,Englert C,Martinez J,Kerjaschki Ddoi
10.1038/nm.3142subject
Has Abstractpub_date
2013-04-01 00:00:00pages
481-7issue
4eissn
1078-8956issn
1546-170Xpii
nm.3142journal_volume
19pub_type
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