Overexpression of the wild type p73 gene in human bladder cancer

Akira Yokomizo, Ming Mai, Donald J. Tindall, Liang Cheng, David G. Bostwick, Seiji Naito, David I. Smith, Wanguo Liu

Research output: Contribution to journalArticle

120 Citations (Scopus)

Abstract

p73, a first p53 relative, was recently identified and shown to be monoallelically expressed in a number of different human tissues. To determine the potential role of this gene in human bladder cancer, we investigated p73 expression levels, allelic expression patterns, and analysed p73 mutations in 23 unselected primary invasive bladder cancers with matched normal tissues and in seven bladder cancer cell lines. In a comparison between normal and tumor tissues using quantitative RT-PCR analysis, we found that p73 was overexpressed in 22/23 bladder cancers, sometimes as great as 20-fold. Allelic expression analysis using a C/T polymorphism in exon 2 and a newly identified T/C polymorphism in exon 5 revealed that p73 was biallelically expressed in both normal bladder and cancer tissues, suggesting that p73 is not imprinted in bladder tissue. Mutation screening of the p73 gene in bladder cancer DNAs using denaturing high-performance liquid chromatography analysis and DNA sequencing revealed no tumor-specific mutations in any coding exons of the p73 gene. These data suggest that the p73 is unlikely to be a tumor suppressor gene, but that overexpression of p73 may contribute to tumorigenesis in bladder cancer.

Original languageEnglish (US)
Pages (from-to)1629-1633
Number of pages5
JournalOncogene
Volume18
Issue number8
StatePublished - Feb 25 1999
Externally publishedYes

Fingerprint

Urinary Bladder Neoplasms
Genes
Exons
Mutation
Tumor Suppressor Genes
DNA Sequence Analysis
Neoplasms
Carcinogenesis
Urinary Bladder
High Pressure Liquid Chromatography
Cell Line
Polymerase Chain Reaction
DNA

Keywords

  • Allelic expression
  • Bladder cancer
  • Imprinting
  • Overexpression
  • p73

ASJC Scopus subject areas

  • Molecular Biology
  • Cancer Research
  • Genetics

Cite this

Yokomizo, A., Mai, M., Tindall, D. J., Cheng, L., Bostwick, D. G., Naito, S., ... Liu, W. (1999). Overexpression of the wild type p73 gene in human bladder cancer. Oncogene, 18(8), 1629-1633.

Overexpression of the wild type p73 gene in human bladder cancer. / Yokomizo, Akira; Mai, Ming; Tindall, Donald J.; Cheng, Liang; Bostwick, David G.; Naito, Seiji; Smith, David I.; Liu, Wanguo.

In: Oncogene, Vol. 18, No. 8, 25.02.1999, p. 1629-1633.

Research output: Contribution to journalArticle

Yokomizo, A, Mai, M, Tindall, DJ, Cheng, L, Bostwick, DG, Naito, S, Smith, DI & Liu, W 1999, 'Overexpression of the wild type p73 gene in human bladder cancer', Oncogene, vol. 18, no. 8, pp. 1629-1633.
Yokomizo A, Mai M, Tindall DJ, Cheng L, Bostwick DG, Naito S et al. Overexpression of the wild type p73 gene in human bladder cancer. Oncogene. 1999 Feb 25;18(8):1629-1633.
Yokomizo, Akira ; Mai, Ming ; Tindall, Donald J. ; Cheng, Liang ; Bostwick, David G. ; Naito, Seiji ; Smith, David I. ; Liu, Wanguo. / Overexpression of the wild type p73 gene in human bladder cancer. In: Oncogene. 1999 ; Vol. 18, No. 8. pp. 1629-1633.
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