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Related Experiment Videos

Deletion within the D17S34 locus in a primitive neuroectodermal tumor

L Haataja1, C Raffel, D H Ledbetter

  • 1Department of Pathology, Children's Hospital of Los Angeles Research Institute, California 90027, USA.

Cancer Research
|January 1, 1997
PubMed
Summary

Loss of heterozygosity in chromosome 17p13.3 is common in solid tumors. Researchers found a deletion within the D17S34 locus in a primitive neuroectodermal tumor, suggesting a potential tumor suppressor gene role.

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Area of Science:

  • Genetics
  • Oncology
  • Molecular Biology

Background:

  • Loss of heterozygosity (LOH) on chromosome 17p13.3 is frequently observed in various solid tumors.
  • A tumor suppressor gene is predicted to exist within this chromosomal region.

Purpose of the Study:

  • To investigate genetic alterations in chromosome 17p13.3 in primitive neuroectodermal tumors (PNETs).
  • To identify potential tumor suppressor genes involved in PNET development.

Main Methods:

  • Analysis of a PNET sample with LOH at the D17S34 locus.
  • Use of cosmid spanning and probes to detect deletions within the D17S34 locus.
  • Examination of evolutionary conserved sequences in the deleted region.

Main Results:

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  • A 9-kb deletion was identified within the D17S34 locus in the PNET sample.
  • The remaining allele at the D17S34 locus showed rearrangement.
  • The deleted region contained evolutionary conserved sequences.

Conclusions:

  • Genetic alterations, including deletions, in the 17p13.3 region may contribute to PNET development.
  • These alterations could affect the expression of adjacent genes, such as ABR.
  • The identified deletion suggests a potential tumor suppressor gene in this critical region.