Inhibition of comt with tolcapone slows progression of polycystic kidney disease in the more severely affected PKD/Mhm (cy/+) substrain of the hannover sprague-dawley rat

Susanne N.E. Boehn, Sonja Spahn, Sabine Neudecker, Andrea Keppler, Marie Thérèse Bihoreau, Bettina Kränzlin, Priyanka Pandey, Sigrid C. Hoffmann, Li Li, Vicente E. Torres, Hermann Josef Gröne, Norbert Gretz

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

Background. Autosomal dominant polycystic kidney disease (ADPKD) is one of the most common human inherited diseases. Modifier genes seem to modulate the disease progression and might therefore be promising drug targets. Although a number of modifier loci have been already identified, no modifier gene has been proven to be a real modifier yet. Methods. Gene expression profiling of two substrains of the Han:SPRD rat, namely PKD/Mhm and PKD/US, both harboring the same mutation, was conducted in 36-day-old animals. Catechol-O-methyltransferase (Comt) was identified as a potential modifier gene. A 3-month treatment with tolcapone, a selective inhibitor of Comt, was carried out in PKD/Mhm and PKD/US (cy/+) animals. Results. Comt is localized within a known modifier locus of PKD (MOP2). The enzyme encoding gene was found upregulated in the more severely affected PKD/Mhm substrain and was hence presumed to be a putative modifier gene of PKD. The treatment with tolcapone markedly attenuated the loss of renal function, inhibited renal enlargement, shifted the size distribution of renal cysts and retarded cell proliferation, apoptosis, inflammation and fibrosis development in affected (cy/+) male and female PKD/Mhm and PKD/US rats. Conclusions. Comt has been confirmed to be the first reported modifier gene for PKD and tolcapone offers a promising drug for treating PKD.

Original languageEnglish (US)
Pages (from-to)2045-2058
Number of pages14
JournalNephrology Dialysis Transplantation
Volume28
Issue number8
DOIs
StatePublished - Aug 1 2013

Keywords

  • Catechol-O-methyltransferase
  • Gene expression profiling
  • Modifier
  • Polycystic kidney disease
  • Tolcapone

ASJC Scopus subject areas

  • Nephrology
  • Transplantation

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    Boehn, S. N. E., Spahn, S., Neudecker, S., Keppler, A., Bihoreau, M. T., Kränzlin, B., Pandey, P., Hoffmann, S. C., Li, L., Torres, V. E., Gröne, H. J., & Gretz, N. (2013). Inhibition of comt with tolcapone slows progression of polycystic kidney disease in the more severely affected PKD/Mhm (cy/+) substrain of the hannover sprague-dawley rat. Nephrology Dialysis Transplantation, 28(8), 2045-2058. https://doi.org/10.1093/ndt/gft014