A Novel Role for GATA3 in Mesangial Cells in Glomerular Development and Injury

Media type: E-Article
Title: A Novel Role for GATA3 in Mesangial Cells in Glomerular Development and Injury
Contributor: Grigorieva, Irina V.; Oszwald, Andre; Grigorieva, Elena F.; Schachner, Helga; Neudert, Barbara; Ostendorf, Tammo; Floege, Jürgen; Lindenmeyer, Maja T.; Cohen, Clemens D.; Panzer, Ulf; Aigner, Christof; Schmidt, Alice; Grosveld, Frank; Thakker, Rajesh V.; Rees, Andrew Jackson; Kain, Renate
imprint: Ovid Technologies (Wolters Kluwer Health), 2019
Published in: Journal of the American Society of Nephrology
Language: English
DOI: 10.1681/asn.2018111143
ISSN: 1046-6673; 1533-3450
Origination:
Footnote:
Description: <jats:sec> <jats:title>Significance Statement</jats:title> <jats:p>Mesangial cells play a crucial role in maintaining glomerular homeostasis and injuries to these cells often result in progression to CKD like IgA and diabetic nephropathies. However, the transcription factors involved in mesangial cell development and function are largely unknown. The authors describe the role transcription factor GATA3 plays in mesangial cells in embryonic kidneys and healthy and injured adult glomeruli. Mice with haploinsufficiency of GATA3 have too few MC precursor cells and glomerular abnormalities. GATA3 expression increases in mesangial cells in mesangial proliferative GN in humans and rodent models suggesting GATA3 is important for glomerular homeostasis and response to injury. GATA3 also may be a useful a nuclear marker of human mesangial cells.</jats:p> </jats:sec> <jats:sec> <jats:title>Background</jats:title> <jats:p>GATA3 is a dual-zinc finger transcription factor that regulates gene expression in many developing tissues. In the kidney, GATA3 is essential for ureteric bud branching, and mice without it fail to develop kidneys. In humans, autosomal dominant <jats:italic toggle="yes">GATA3</jats:italic> mutations can cause renal aplasia as part of the hypoparathyroidism, renal dysplasia, deafness (HDR) syndrome that includes mesangioproliferative GN. This suggests that GATA3 may have a previously unrecognized role in glomerular development or injury.</jats:p> </jats:sec> <jats:sec> <jats:title>Methods</jats:title> <jats:p>To determine GATA3’s role in glomerular development or injury, we assessed GATA3 expression in developing and mature kidneys from <jats:italic toggle="yes">Gata3</jats:italic> heterozygous (<jats:sup>+</jats:sup>/−) knockout mice, as well as injured human and rodent kidneys.</jats:p> </jats:sec> <jats:sec> <jats:title>Results</jats:title> <jats:p>We show that GATA3 is expressed by FOXD1 lineage stromal progenitor cells, and a subset of these cells mature into mesangial cells (MCs) that continue to express GATA3 in adult kidneys. In mice, we uncover that GATA3 is essential for normal glomerular development, and mice with haploinsufficiency of <jats:italic toggle="yes">Gata3</jats:italic> have too few MC precursors and glomerular abnormalities. Expression of GATA3 is maintained in MCs of adult kidneys and is markedly increased in rodent models of mesangioproliferative GN and in IgA nephropathy, suggesting that GATA3 plays a critical role in the maintenance of glomerular homeostasis.</jats:p> </jats:sec> <jats:sec> <jats:title>Conclusions</jats:title> <jats:p>These results provide new insights on the role GATA3 plays in MC development and response to injury. It also shows that GATA3 may be a novel and robust nuclear marker for identifying MCs in tissue sections.</jats:p> </jats:sec>
Access State: Open Access

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