Is the Antiproteinuric Effect of Cyclosporine A Independent of Its Immunosuppressive Function in T Cells?

The antiproteinuric effect of cyclosporine A(CsA) has been believed to result from its immunosuppressive effect on the transcription factor NFAT in T cells. However, current evidences supporting this hypothesis are missing. A recent study showed that CsA has a direct antiproteinuric effect on podocy...

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Main Authors: Bin Zhang, Wei Shi
Format: Article
Language:English
Published: Wiley 2012-01-01
Series:International Journal of Nephrology
Online Access:http://dx.doi.org/10.1155/2012/809456
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author Bin Zhang
Wei Shi
author_facet Bin Zhang
Wei Shi
author_sort Bin Zhang
collection DOAJ
description The antiproteinuric effect of cyclosporine A(CsA) has been believed to result from its immunosuppressive effect on the transcription factor NFAT in T cells. However, current evidences supporting this hypothesis are missing. A recent study showed that CsA has a direct antiproteinuric effect on podocytes, suggesting a novel non-immunosuppressive mechanism for CsA's antiproteinuric effect. Conditional NFATc1 activation in podoyctes per se is sufficient to induce proteinuria in mice, indicating that NFAT activation in podocytes is a critical pathogenic molecular event leading to podocyte injury and proteinuria. Meanwhile, evidence showed that TRPC6-mediated Ca2+ influx stimulates NFAT-dependent TRPC6 expression. Altogether, these advances in podocyte research indicate that calcineurin-NFAT signal or calcineurin-synaptopodin axis has a direct proteinuric effect on podocytes which raises the possibility of developing specific antiproteinuric drugs that lack the unwanted effects of calcineurin or NFAT inhibition.
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spelling doaj-art-7dcf5f04c1cd4dc89fdcf6fa04e3daea2025-08-20T03:35:23ZengWileyInternational Journal of Nephrology2090-214X2090-21582012-01-01201210.1155/2012/809456809456Is the Antiproteinuric Effect of Cyclosporine A Independent of Its Immunosuppressive Function in T Cells?Bin Zhang0Wei Shi1Department of Nephrology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, 106 Zhongshan No. 2 Road, Guangzhou 510080, ChinaDepartment of Nephrology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, 106 Zhongshan No. 2 Road, Guangzhou 510080, ChinaThe antiproteinuric effect of cyclosporine A(CsA) has been believed to result from its immunosuppressive effect on the transcription factor NFAT in T cells. However, current evidences supporting this hypothesis are missing. A recent study showed that CsA has a direct antiproteinuric effect on podocytes, suggesting a novel non-immunosuppressive mechanism for CsA's antiproteinuric effect. Conditional NFATc1 activation in podoyctes per se is sufficient to induce proteinuria in mice, indicating that NFAT activation in podocytes is a critical pathogenic molecular event leading to podocyte injury and proteinuria. Meanwhile, evidence showed that TRPC6-mediated Ca2+ influx stimulates NFAT-dependent TRPC6 expression. Altogether, these advances in podocyte research indicate that calcineurin-NFAT signal or calcineurin-synaptopodin axis has a direct proteinuric effect on podocytes which raises the possibility of developing specific antiproteinuric drugs that lack the unwanted effects of calcineurin or NFAT inhibition.http://dx.doi.org/10.1155/2012/809456
spellingShingle Bin Zhang
Wei Shi
Is the Antiproteinuric Effect of Cyclosporine A Independent of Its Immunosuppressive Function in T Cells?
International Journal of Nephrology
title Is the Antiproteinuric Effect of Cyclosporine A Independent of Its Immunosuppressive Function in T Cells?
title_full Is the Antiproteinuric Effect of Cyclosporine A Independent of Its Immunosuppressive Function in T Cells?
title_fullStr Is the Antiproteinuric Effect of Cyclosporine A Independent of Its Immunosuppressive Function in T Cells?
title_full_unstemmed Is the Antiproteinuric Effect of Cyclosporine A Independent of Its Immunosuppressive Function in T Cells?
title_short Is the Antiproteinuric Effect of Cyclosporine A Independent of Its Immunosuppressive Function in T Cells?
title_sort is the antiproteinuric effect of cyclosporine a independent of its immunosuppressive function in t cells
url http://dx.doi.org/10.1155/2012/809456
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