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Corrigendum Free access | 10.1172/JCI62812

CD2AP in mouse and human podocytes controls a proteolytic program that regulates cytoskeletal structure and cellular survival

Suma Yaddanapudi, Mehmet M. Altintas, Andreas D. Kistler, Isabel Fernandez, Clemens C. Möller, Changli Wei, Vasil Peev, Jan B. Flesche, Anna-Lena Forst, Jing Li, Jaakko Patrakka, Zhijie Xiao, Florian Grahammer, Mario Schiffer, Tobias Lohmüller, Thomas Reinheckel, Changkyu Gu, Tobias B. Huber, Wenjun Ju, Markus Bitzer, Maria P. Rastaldi, Phillip Ruiz, Karl Tryggvason, Andrey S. Shaw, Christian Faul, Sanja Sever, and Jochen Reiser

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Published February 1, 2012 - More info

Published in Volume 122, Issue 2 on February 1, 2012
J Clin Invest. 2012;122(2):780–780. https://doi.org/10.1172/JCI62812.
© 2012 The American Society for Clinical Investigation
Published February 1, 2012 - Version history
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Related article:

CD2AP in mouse and human podocytes controls a proteolytic program that regulates cytoskeletal structure and cellular survival
Suma Yaddanapudi, … , Sanja Sever, Jochen Reiser
Suma Yaddanapudi, … , Sanja Sever, Jochen Reiser
Research Article Nephrology

CD2AP in mouse and human podocytes controls a proteolytic program that regulates cytoskeletal structure and cellular survival

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Abstract

Kidney podocytes are highly differentiated epithelial cells that form interdigitating foot processes with bridging slit diaphragms (SDs) that regulate renal ultrafiltration. Podocyte injury results in proteinuric kidney disease, and genetic deletion of SD-associated CD2-associated protein (CD2AP) leads to progressive renal failure in mice and humans. Here, we have shown that CD2AP regulates the TGF-β1–dependent translocation of dendrin from the SD to the nucleus. Nuclear dendrin acted as a transcription factor to promote expression of cytosolic cathepsin L (CatL). CatL proteolyzed the regulatory GTPase dynamin and the actin-associated adapter synaptopodin, leading to a reorganization of the podocyte microfilament system and consequent proteinuria. CD2AP itself was proteolyzed by CatL, promoting sustained expression of the protease during podocyte injury, and in turn increasing the apoptotic susceptibility of podocytes to TGF-β1. Our study identifies CD2AP as the gatekeeper of the podocyte TGF-β response through its regulation of CatL expression and defines a molecular mechanism underlying proteinuric kidney disease.

Authors

Suma Yaddanapudi, Mehmet M. Altintas, Andreas D. Kistler, Isabel Fernandez, Clemens C. Möller, Changli Wei, Vasil Peev, Jan B. Flesche, Anna-Lena Forst, Jing Li, Jaakko Patrakka, Zhijie Xiao, Florian Grahammer, Mario Schiffer, Tobias Lohmüller, Thomas Reinheckel, Changkyu Gu, Tobias B. Huber, Wenjun Ju, Markus Bitzer, Maria P. Rastaldi, Phillip Ruiz, Karl Tryggvason, Andrey S. Shaw, Christian Faul, Sanja Sever, Jochen Reiser

×

Original citation: J. Clin. Invest. 2011;121(10):3965–3980. doi:10.1172/JCI58552.

Citation for this corrigendum: J. Clin. Invest. 2012;122(2):780. doi:10.1172/JCI62812.

During the preparation of this manuscript, the fourth row of images in Figure 5C was inadvertently mislabeled. The figure is correctly labeled below.

Figure 5

The authors regret the error.

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