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Biological and clinical role of p73 in neuroblastoma

M Romani1, G P Tonini, B Banelli

  • 1Laboratory of Tumor Genetics, Istituto Nazionale per la Ricerca sul Cancro (IST), Largo Rosanna Benzi 10, 16132 Genova, Italy. massimo.romani@istge.it

Cancer Letters
|July 26, 2003
PubMed

Insights

The p73 gene, a p53 homologue, plays a dual role in neuroblastoma. Full-length p73 induces apoptosis, while truncated forms promote cancer by inhibiting this cell death.

Area of Science:

  • Molecular Biology
  • Genetics
  • Cancer Research

Background:

  • The p73 gene, a homologue of the tumor suppressor p53, is located in a chromosomal region frequently deleted in neuroblastoma.
  • Initially considered a tumor suppressor, p73's function is complex and not typical of classic oncosuppressor genes.

Purpose of the Study:

  • To review the multifaceted biology of the p73 gene.
  • To explore the specific role of p73 in the development and progression of neuroblastoma.

Main Methods:

  • Literature review of p73 gene function and its isoforms.
  • Analysis of p73's involvement in apoptosis and oncogenesis.
  • Focus on p73's relevance to neuroblastoma.

Main Results:

  • p73 exhibits a 'two in one' structure with distinct isoform functions.
  • Full-length p73 variants are potent inducers of apoptosis.
  • N-terminal truncated p73 isoforms possess oncogenic properties, inhibiting apoptosis.

Conclusions:

  • The dualistic nature of p73, with both tumor-suppressive and oncogenic isoforms, is critical in understanding its role in neuroblastoma.
  • Further research into p73 biology may reveal novel therapeutic strategies for neuroblastoma.

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