Trpc6 is a glomerular slit diaphragm-associated channel required for normal renal function

Trpc6 is a glomerular slit diaphragm-associated channel required for normal renal function

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ABSTRACT Progressive kidney failure is a genetically and clinically heterogeneous group of disorders. Podocyte foot processes and the interposed glomerular slit diaphragm are essential


components of the permeability barrier in the kidney. Mutations in genes encoding structural proteins of the podocyte lead to the development of proteinuria, resulting in progressive kidney


failure and focal segmental glomerulosclerosis. Here, we show that the canonical transient receptor potential 6 (TRPC6) ion channel is expressed in podocytes and is a component of the


glomerular slit diaphragm. We identified five families with autosomal dominant focal segmental glomerulosclerosis in which disease segregated with mutations in the gene TRPC6 on chromosome


11q. Two of the TRPC6 mutants had increased current amplitudes. These data show that TRPC6 channel activity at the slit diaphragm is essential for proper regulation of podocyte structure and


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customer support SIMILAR CONTENT BEING VIEWED BY OTHERS KIF21A DEFICIENCY LEADS TO IMPAIRED GLOMERULAR FILTRATION BARRIER FUNCTION Article Open access 06 November 2023 DISTINCT FUNCTIONAL


REQUIREMENTS FOR PODOCALYXIN IN IMMATURE AND MATURE PODOCYTES REVEAL MECHANISMS OF HUMAN KIDNEY DISEASE Article Open access 10 June 2020 PODOCYTE-SPECIFIC CRB2 KNOCKOUT MICE DEVELOP FOCAL


SEGMENTAL GLOMERULOSCLEROSIS Article Open access 15 October 2021 REFERENCES * Zandi-Nejad, K., Eddy, A.A., Glassock, R.J. & Brenner, B.M. Why is proteinuria an ominous biomarker of


progressive kidney disease? _Kidney Int. Suppl._, S76–S89 (2004). * Somlo, S. & Mundel, P. Getting a foothold in nephrotic syndrome. _Nat. Genet._ 24, 333–335 (2000). Article  CAS 


PubMed  Google Scholar  * Pavenstadt, H., Kriz, W. & Kretzler, M. Cell biology of the glomerular podocyte. _Physiol. Rev._ 83, 253–307 (2003). Article  CAS  PubMed  Google Scholar  *


Pollak, M.R. Inherited podocytopathies: FSGS and nephrotic syndrome from a genetic viewpoint. _J. Am. Soc. Nephrol._ 13, 3016–3023 (2002). Article  PubMed  Google Scholar  * Winn, M.P. et


al. A mutation in the TRPC6 cation channel causes familial focal segmental glomerulosclerosis. _Science_, published online 5 May 2005 (10.1126/science.1106215). * Montell, C. The TRP


superfamily of cation channels. _Sci. STKE_ 2005, re3 (2005). PubMed  Google Scholar  * Clapham, D.E. TRP channels as cellular sensors. _Nature_ 426, 517–524 (2003). Article  CAS  PubMed 


Google Scholar  * Facemire, C.S., Mohler, P.J. & Arendshorst, W.J. Expression and relative abundance of short transient receptor potential channels in the rat renal microcirculation.


_Am. J. Physiol. Renal Physiol._ 286, F546–F551 (2004). Article  CAS  PubMed  Google Scholar  * Mundel, P. et al. Synaptopodin: an actin-associated protein in telencephalic dendrites and


renal podocytes. _J. Cell Biol._ 139, 193–204 (1997). Article  CAS  PubMed  PubMed Central  Google Scholar  * Mundel, P. et al. Rearrangements of the cytoskeleton and cell contacts induce


process formation during differentiation of conditionally immortalized mouse podocyte cell lines. _Exp. Cell Res._ 236, 248–258 (1997). Article  CAS  PubMed  Google Scholar  * Schnabel, E.,


Dekan, G., Miettinen, A. & Farquhar, M.G. Biogenesis of podocalyxin–the major glomerular sialoglycoprotein–in the newborn rat kidney. _Eur. J. Cell Biol._ 48, 313–326 (1989). CAS  PubMed


  Google Scholar  * Boute, N. et al. NPHS2, encoding the glomerular protein podocin, is mutated in autosomal recessive steroid-resistant nephrotic syndrome. _Nat. Genet._ 24, 349–354 (2000).


Article  CAS  PubMed  Google Scholar  * Kestila, M. et al. Positionally cloned gene for a novel glomerular protein–nephrin–is mutated in congenital nephrotic syndrome. _Mol. Cell_ 1,


575–582 (1998). Article  CAS  PubMed  Google Scholar  * Kim, J.M. et al. CD2-associated protein haploinsufficiency is linked to glomerular disease susceptibility. _Science_ 300, 1298–1300


(2003). Article  CAS  PubMed  Google Scholar  * Reiser, J. et al. Induction of B7–1 in podocytes is associated with nephrotic syndrome. _J. Clin. Invest._ 113, 1390–1397 (2004). Article  CAS


  PubMed  PubMed Central  Google Scholar  * Putaala, H., Soininen, R., Kilpelainen, P., Wartiovaara, J. & Tryggvason, K. The murine nephrin gene is specifically expressed in kidney,


brain and pancreas: inactivation of the gene leads to massive proteinuria and neonatal death. _Hum. Mol. Genet._ 10, 1–8 (2001). Article  CAS  PubMed  Google Scholar  * Hamano, Y. et al.


Determinants of vascular permeability in the kidney glomerulus. _J. Biol. Chem._ 277, 31154–31162 (2002). Article  CAS  PubMed  Google Scholar  * Kaplan, J.M. et al. Mutations in ACTN4,


encoding alpha-actinin-4, cause familial focal segmental glomerulosclerosis. _Nat. Genet._ 24, 251–256 (2000). Article  CAS  PubMed  Google Scholar  * Pavenstadt, H. & Bek, M. Podocyte


electrophysiology, _in vivo_ and _in vitro_. _Microsc. Res. Tech._ 57, 224–227 (2002). Article  CAS  PubMed  Google Scholar  * Drenckhahn, D. & Franke, R.P. Ultrastructural organization


of contractile and cytoskeletal proteins in glomerular podocytes of chicken, rat, and man. _Lab. Invest._ 59, 673–682 (1988). CAS  PubMed  Google Scholar  * Huber, T.B. et al. Nephrin and


CD2AP associate with phosphoinositide 3-OH kinase and stimulate AKT-dependent signaling. _Mol. Cell. Biol._ 23, 4917–4928 (2003). Article  CAS  PubMed  PubMed Central  Google Scholar  *


Verma, R. et al. Fyn binds to and phosphorylates the kidney slit diaphragm component Nephrin. _J. Biol. Chem._ 278, 20716–20723 (2003). Article  CAS  PubMed  Google Scholar  * Hisatsune, C.


et al. Regulation of TRPC6 channel activity by tyrosine phosphorylation. _J. Biol. Chem._ 279, 18887–18894 (2004). Article  CAS  PubMed  Google Scholar  * Bandyopadhyay, B.C. et al. Apical


localization of a functional TRPC3/TRPC6-Ca2+-signaling complex in polarized epithelial cells. Role in apical Ca2+ influx. _J. Biol. Chem._ 280, 12908–12916 (2005). Article  CAS  PubMed 


Google Scholar  * Reiser, J., Kriz, W., Kretzler, M. & Mundel, P. The glomerular slit diaphragm is a modified adherens junction. _J. Am. Soc. Nephrol._ 11, 1–8 (2000). CAS  PubMed 


Google Scholar  * Notredame, C., Higgins, D.G. & Heringa, J. T-Coffee: A novel method for fast and accurate multiple sequence alignment. _J. Mol. Biol._ 302, 205–217 (2000). Article  CAS


  PubMed  Google Scholar  Download references ACKNOWLEDGEMENTS We thank the family members for their participation in these studies and M.A. Arnaout for discussions about the manuscript.


This work was supported by grants from the US National Institutes of Health (M.R.P., P.M. and R.K.) as well as the Howard Hughes Medical Institute (P.L.S. and D.E.C.). J.R. was supported by


the KMD Foundation and the KUFA-ASN Research Grant. AUTHOR INFORMATION AUTHORS AND AFFILIATIONS * Department of Medicine, Renal Unit, Massachusetts General Hospital and Harvard Medical


School, Boston, 02129, Massachusetts, USA Jochen Reiser, Clemens C Möller, Mehmet M Altintas & Changli Wei * Renal Division, Department of Medicine, Brigham and Women's Hospital and


Harvard Medical School, Boston, 02115, Massachusetts, USA Krishna R Polu, Peter Kenlan, Stephanie Herbert & Martin R Pollak * Department of Medicine, Mount Sinai School of Medicine, New


York, 10029, New York, USA Christian Faul & Peter Mundel * Renal Unit, Instituto del Riñon-Fresenius Medical Care, Colombia Ivan Villegas * Department of Pathology, Instituto Nacional


de Cardiologia Ignacio Chavez, Mexico, 14080, D.F., Mexico Carmen Avila-Casado * Program in Membrane Biology and Renal Unit, Massachusetts General Hospital and Harvard Medical School,


Boston, 02129, Massachusetts, USA Mary McGee & Dennis Brown * Department of Medicine, Center for Matrix Biology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston,


02115, Massachusetts, USA Hikaru Sugimoto & Raghu Kalluri * Department of Cardiology, Howard Hughes Medical Institute, Children's Hospital, Boston, 02115, Massachusetts, USA Paula L


Smith & David E Clapham Authors * Jochen Reiser View author publications You can also search for this author inPubMed Google Scholar * Krishna R Polu View author publications You can


also search for this author inPubMed Google Scholar * Clemens C Möller View author publications You can also search for this author inPubMed Google Scholar * Peter Kenlan View author


publications You can also search for this author inPubMed Google Scholar * Mehmet M Altintas View author publications You can also search for this author inPubMed Google Scholar * Changli


Wei View author publications You can also search for this author inPubMed Google Scholar * Christian Faul View author publications You can also search for this author inPubMed Google Scholar


* Stephanie Herbert View author publications You can also search for this author inPubMed Google Scholar * Ivan Villegas View author publications You can also search for this author


inPubMed Google Scholar * Carmen Avila-Casado View author publications You can also search for this author inPubMed Google Scholar * Mary McGee View author publications You can also search


for this author inPubMed Google Scholar * Hikaru Sugimoto View author publications You can also search for this author inPubMed Google Scholar * Dennis Brown View author publications You can


also search for this author inPubMed Google Scholar * Raghu Kalluri View author publications You can also search for this author inPubMed Google Scholar * Peter Mundel View author


publications You can also search for this author inPubMed Google Scholar * Paula L Smith View author publications You can also search for this author inPubMed Google Scholar * David E


Clapham View author publications You can also search for this author inPubMed Google Scholar * Martin R Pollak View author publications You can also search for this author inPubMed Google


Scholar CORRESPONDING AUTHORS Correspondence to Jochen Reiser or Martin R Pollak. ETHICS DECLARATIONS COMPETING INTERESTS The authors declare no competing financial interests. SUPPLEMENTARY


INFORMATION SUPPLEMENTARY FIG. 1 Summary of TRPC6 mutations. (PDF 99 kb) SUPPLEMENTARY TABLE 1 Primer sequences. (PDF 43 kb) SUPPLEMENTARY NOTE Clinical information. (PDF 40 kb) RIGHTS AND


PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE Reiser, J., Polu, K., Möller, C. _et al._ TRPC6 is a glomerular slit diaphragm-associated channel required for


normal renal function. _Nat Genet_ 37, 739–744 (2005). https://doi.org/10.1038/ng1592 Download citation * Received: 12 April 2005 * Accepted: 23 May 2005 * Published: 27 May 2005 * Issue


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