Reduced Pax2 gene dosage increases apoptosis and slows the progression of renal cystic disease

Lance Ostrom, Ming Jer Tang, Peter Gruss, Gregory R. Dressler

研究成果: Article同行評審

99 引文 斯高帕斯(Scopus)


The murine cpk mouse develops a rapid-onset polycystic kidney disease (PKD) with many similarities to human PKD. During kidney development, the transcription factor Pax2 is required for the specification and differentiation of the renal epithelium. In humans, Pax2 is also expressed in juvenile cystic kidneys where it correlates with cell proliferation. In this report, Pax2 expression is demonstrated in the cystic epithelium of the mouse cpk kidneys. To assess the role of Pax2 during the development of polycystic kidney disease, the progression of renal cysts was examined in cpk mutants carrying one or two alleles of Pax2. Reduced Pax2 gene dosage resulted in a significant inhibition of renal cyst growth while maintaining more normal renal structures. The inhibition of cyst growth was not due to reduced proliferation of the cystic epithelium, rather to increased cell death in the Pax2 heterozygotes. Increased apoptosis with reduced Pax2 gene dosage was also observed in normal developing kidneys. Thus, increased cell death is an integral part of the Pax2 heterozygous phenotype and may be the underlying cause of Pax gene haploinsufficiency. That the cystic epithelium requires Pax2 for continued expansion underscores the embryonic nature of the renal cystic cells and may provide new insights toward growth suppression strategies. (C) 2000 Academic Press.

頁(從 - 到)250-258
期刊Developmental Biology
出版狀態Published - 2000 3月 15

All Science Journal Classification (ASJC) codes

  • 分子生物學
  • 發展生物學
  • 細胞生物學


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