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Updated: Jun 17, 2026
04:56
Detection of Aggregation-Prone Behavior in Mutant P53 V157F Breast Cancer Cells Using Multipoint Thioflavin T Fluorescence
Published on: December 30, 2025
Mutant p53 drives invasion by promoting integrin recycling
Patricia A J Muller1, Patrick T Caswell, Brendan Doyle
1The Beatson Institute for Cancer Research, Switchback Road, Bearsden, Glasgow G61 1BD, UK.
Cell
|January 13, 2010
Summary
Mutant p53 proteins drive cancer invasion and metastasis by enhancing cell signaling pathways. Targeting integrin and EGF receptors may offer new cancer therapies.
Area of Science:
- Oncology
- Molecular Biology
- Cell Biology
Background:
- p53 is a crucial tumor suppressor protein frequently inactivated in cancers by missense mutations in the TP53 gene.
- Mutant p53 proteins not only lose tumor suppressor functions but also gain pro-metastatic activities, contributing to cancer progression.
Purpose of the Study:
- To investigate the mechanisms by which mutant p53 promotes cancer cell invasion and metastasis.
- To identify key signaling pathways and molecular players involved in mutant p53-driven oncogenesis.
Main Methods:
- Analysis of cell invasion, migration, and metastatic behavior in the presence of mutant p53.
- Investigation of integrin and epidermal growth factor receptor (EGFR) trafficking and signaling pathways.
- Assessment of the role of Rab-coupling protein (RCP) and TAp63 in mutant p53 functions.
Main Results:
- Mutant p53 expression enhances cell invasion, disrupts migration directionality, and promotes metastatic behavior.
- These effects are mediated by increased integrin and EGFR trafficking, dependent on RCP, leading to constitutive EGFR/integrin signaling.
- Mutant p53 promotes invasion through TAp63 inhibition; simultaneous loss of p53 and TAp63 mimics mutant p53 phenotypes.
Conclusions:
- Mutant p53 actively drives cancer progression by reprogramming cell signaling and trafficking pathways.
- Targeting alpha5/beta1-integrin and/or EGFR represents a potential therapeutic strategy for cancers expressing mutant p53.
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