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Aneuploidy of chromosome 9 and the tumor suppressor genes p16(INK4) and p15(INK4B) detected by in situ hybridization in locally advanced prostate cancer.

Publication ,  Journal Article
Heidenreich, B; Heidenreich, A; Sesterhenn, A; Srivastava, S; Moul, JW; Sesterhenn, IA
Published in: Eur Urol
October 2000

INTRODUCTION AND OBJECTIVES: The linked p16(INK4)/MTS1 and p15(INK4B)/MTS2 genes on chromosome 9p21 encode proteins that inhibit the cyclinD dependent kinases CDK4/6. Biallelic homozygous deletions involving this locus have been identified in a wide range of tumor cell lines, but in a lower frequency of primary tumors. As PCR based approaches analyzing for homozygous deletions could be confounded by unavoidable contributions of normal cells in microdissected tissue, we performed in situ hybridization (ISH) on primary prostate carcinomas to accurately evaluate p16 and p15 copy numbers on a cell-by-cell basis. MATERIAL AND METHODS: p16 and p15 loci were evaluated in 28 pT3N0M0 prostate cancer specimens. Of 28 patients, 15 (53%) were ascertained showing no recurrence (mean follow-up 61+/-17 months), 13 (47%) developed recurrences within 27+/-19 months. Tissues were provided for ISH analysis in a blinded fashion. Isolated DNA derived from P1 clone 1063 compromising p16 and p15 as well as a centromeric probe for chromosome 9 were used for hybridization. Signals were enumerated within 300 interphase nuclei per tumor specimen, and in 100 nuclei derived from 18 benign prostate tissues and 7 adjacent PIN regions. RESULTS: ISH detected aneuploid tumors in 12/13 (92%) patients with recurrence and in 5/15 (33%) without recurrence (p<0.0014). Whereas 3/7 PIN specimens associated with nonrecurrent PCA demonstrated euploidy, all 4/7 PIN associated with recurrent disease demonstrated the same aneuploidy for chr9 as the primary tumor. All benign tissues evaluated exhibited euploidy for chr9, p16 and p15. None of the PCA and PIN samples revealed homozygous deletions for p16(INK4)/MTS1/p15(INK4B)/MTS2; 2/28 (7.1%) PCA exhibited partial deletion for p16(INK4)/MTS1/p15(INK4B)/MTS2 and aneuploidy for chr9; both PCA derived from the recurrent group. CONCLUSIONS: Deletion of 9p21 was rare and therefore such genetic alterations may not play an important role in the pathogenesis of PCA. Analysis of the limited number of PCA examined suggest a strong association between chr9 aneuploidy and recurrenct disease. Aneuploidy in both PIN and PCA suggests that the clinical outcome of PCA might already be determined in the preinvasive PIN.

Duke Scholars

Published In

Eur Urol

DOI

ISSN

0302-2838

Publication Date

October 2000

Volume

38

Issue

4

Start / End Page

475 / 482

Location

Switzerland

Related Subject Headings

  • Urology & Nephrology
  • Tumor Suppressor Proteins
  • Prostatic Neoplasms
  • Neoplasm Staging
  • Male
  • In Situ Hybridization
  • Humans
  • Genes, Tumor Suppressor
  • Cyclin-Dependent Kinase Inhibitor p16
  • Cyclin-Dependent Kinase Inhibitor p15
 

Citation

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Heidenreich, B., Heidenreich, A., Sesterhenn, A., Srivastava, S., Moul, J. W., & Sesterhenn, I. A. (2000). Aneuploidy of chromosome 9 and the tumor suppressor genes p16(INK4) and p15(INK4B) detected by in situ hybridization in locally advanced prostate cancer. Eur Urol, 38(4), 475–482. https://doi.org/10.1159/000020327
Heidenreich, B., A. Heidenreich, A. Sesterhenn, S. Srivastava, J. W. Moul, and I. A. Sesterhenn. “Aneuploidy of chromosome 9 and the tumor suppressor genes p16(INK4) and p15(INK4B) detected by in situ hybridization in locally advanced prostate cancer.Eur Urol 38, no. 4 (October 2000): 475–82. https://doi.org/10.1159/000020327.
Heidenreich B, Heidenreich A, Sesterhenn A, Srivastava S, Moul JW, Sesterhenn IA. Aneuploidy of chromosome 9 and the tumor suppressor genes p16(INK4) and p15(INK4B) detected by in situ hybridization in locally advanced prostate cancer. Eur Urol. 2000 Oct;38(4):475–82.
Heidenreich, B., et al. “Aneuploidy of chromosome 9 and the tumor suppressor genes p16(INK4) and p15(INK4B) detected by in situ hybridization in locally advanced prostate cancer.Eur Urol, vol. 38, no. 4, Oct. 2000, pp. 475–82. Pubmed, doi:10.1159/000020327.
Heidenreich B, Heidenreich A, Sesterhenn A, Srivastava S, Moul JW, Sesterhenn IA. Aneuploidy of chromosome 9 and the tumor suppressor genes p16(INK4) and p15(INK4B) detected by in situ hybridization in locally advanced prostate cancer. Eur Urol. 2000 Oct;38(4):475–482.
Journal cover image

Published In

Eur Urol

DOI

ISSN

0302-2838

Publication Date

October 2000

Volume

38

Issue

4

Start / End Page

475 / 482

Location

Switzerland

Related Subject Headings

  • Urology & Nephrology
  • Tumor Suppressor Proteins
  • Prostatic Neoplasms
  • Neoplasm Staging
  • Male
  • In Situ Hybridization
  • Humans
  • Genes, Tumor Suppressor
  • Cyclin-Dependent Kinase Inhibitor p16
  • Cyclin-Dependent Kinase Inhibitor p15