Localization of discoidin domain receptors in rat kidney

Nephron. Experimental Nephrology
Rutha LeeYoav Segal

Abstract

The discoidin domain receptors (DDRs) DDR1 and DDR2 are cardinal members of a receptor tyrosine kinase subfamily, activated by collagens. They are candidate effectors in tissue injury and fibrosis. We investigated the DDR expression in normal and remnant rat kidneys. The DDR expression in kidney and other tissues was examined by indirect immunofluorescence, immunoblotting, and ribonuclease protection assays. The expression patterns in remnant and control kidneys were compared at 2-, 4-, and 8-week time points, following induction of injury. DDR1 is expressed in basolateral membranes of select nephron segments, from the connecting tubule to the renal papilla. DDR2 is expressed in apical membranes of select nephron segments, from the loop of Henle to the macula densa. The DDR1 protein expression is upregulated within the glomeruli of remnant kidneys. The distribution of DDR2 in remnant kidneys is similar to that in controls. The DDR mRNA levels in remnant and control kidneys were not significantly different, at any time point. The DDR1 localization in the rat kidney is consistent with roles in cell-matrix interactions. Upregulation within glomeruli of remnant kidneys suggests the possibility of additional roles in kidney injury. ...Continue Reading

Citations

Mar 5, 2011·Journal of the American Society of Nephrology : JASN·Ivonne LoefflerGunter Wolf
Mar 16, 2012·Experimental Cell Research·Corina M Borza, Ambra Pozzi
Dec 7, 2010·Drug Discovery Today·Marco PrunottoSolange Moll
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Jun 7, 2011·The American Journal of Pathology·Dominique GuerrotJean-Claude Dussaule
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Nov 10, 2006·Journal of the American Society of Nephrology : JASN·Martin FlamantJean-Claude Dussaule
Aug 7, 2019·Journal of the American Society of Nephrology : JASN·Manuel ChiusaAmbra Pozzi
Feb 20, 2018·Cell Adhesion & Migration·Aude Dorison, Christos Chantziantoniou

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