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Yeast As a Chassis for Developing Functional Assays to Study Human P53
14:57

Yeast As a Chassis for Developing Functional Assays to Study Human P53

Published on: August 4, 2019

Mutant p53: an oncogenic transcription factor

S Strano1, S Dell'Orso, S Di Agostino

  • 1Department of Experimental Oncology, Regina Elena Cancer Institute, Via delle Messi d'oro, Rome, Italy.

Oncogene
|April 3, 2007
PubMed

Insights

Mutant p53 proteins, unlike wild-type, gain oncogenic functions in cancer. This review explores the molecular mechanisms, focusing on the transcriptional activity of mutant p53, which remains poorly understood.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Genetics

Background:

  • Tumor suppressor gene inactivation is a hallmark of cancer.
  • Mutations in the p53 gene occur in about half of human cancers.
  • Mutant p53 proteins exhibit novel oncogenic functions beyond loss of wild-type activity.

Purpose of the Study:

  • To review the molecular mechanisms underlying the gain-of-function (GOF) of mutant p53 proteins.
  • To focus on the transcriptional activity of mutant p53 as a key GOF mechanism.
  • To highlight the current gaps in knowledge regarding mutant p53's transcriptional roles.

Main Methods:

  • Literature review focusing on studies investigating mutant p53.
  • Analysis of research on the transcriptional activity of mutant p53.
  • Synthesis of existing data to identify unanswered questions.

Main Results:

  • Mutant p53 proteins acquire new oncogenic properties.
  • These properties contribute to tumor initiation, progression, spread, and chemoresistance.
  • Transcriptional activity is a significant, yet understudied, mechanism for mutant p53 GOF.

Conclusions:

  • Mutant p53's gain of function is critical in cancer development and treatment resistance.
  • Understanding mutant p53's transcriptional activity is crucial for deciphering its oncogenic roles.
  • Further research is needed to fully elucidate the molecular mechanisms of mutant p53 transcriptional activity.

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