Cited by 218Cancer-related Molecular PathwaysPI3K/AKT/mTOR signaling in cancerCell death mechanisms and regulation

Mutant p53 in MDA-MB-231 breast cancer cells is stabilized by elevated phospholipase D activity and contributes to survival signals generated by phospholipase D

Hui, L, Zheng, Y, Yan, Y, Bargonetti, J, Foster, D A·2006·Oncogene

Abstract

p53 is the most commonly mutated gene in human cancer. Although the loss of tumor suppressor functions for p53 in tumorigenesis is well characterized, gain-of-function p53 mutations observed in most cancers are not as widely appreciated. The human breast cancer cell line MDA-MB-231, which has high levels of a mutant p53, has high levels of phospholipase D (PLD) activity, which provides a survival signal in these cells when deprived of serum growth factors. We report here that the mutant p53 in MDA-MB-231 cells is stabilized by the elevated PLD activity in these cells. Surprisingly, the survival of MDA-MB-231 cells deprived of serum was dependent on the mutant p53. These data indicate that a mutant p53, stabilized by elevated PLD activity, can contribute to the suppression of apoptosis in a human breast cancer cell line and suggest a rationale for the selection of p53 mutations early in tumorigenesis to suppress apoptosis in an emerging tumor.

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Crossref · 10.1038/sj.onc.1209735

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Authors
Hui, L., Zheng, Y., Yan, Y., Bargonetti, J., & Foster, D. A.
Affiliations
Hunter College (US)
Corresponding author
Foster, D A
Venue
Oncogene
Published
2006-06-19
Volume
25
Issue
55
Pages
7305-7310
ISSN
  • 0950-9232 (ISSN-L)
  • 1476-5594
OpenAlex
W2059200921
Cited by
218
References
37
Citations by year
2026: 6 · 2025: 14 · 2024: 13 · 2023: 14 · 2022: 14 · 2021: 19 · 2020: 13 · 2019: 11 · 2018: 12 · 2017: 17 · 2016: 12 · 2015: 5 · 2014: 13 · 2013: 11 · 2012: 9
FWCI
2.43
Type
journal article
Language
en
Open access
closed
Locations
  • Oncogene (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Cancer Institute (CA 46677)
  • National Institute of General Medical Sciences (GM60654, S06GM060654)
  • National Center for Research Resources (RR-03037)
Topics
  • Health Sciences › Medicine › Oncology › Cancer-related Molecular Pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › PI3K/AKT/mTOR signaling in cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
Keywords
mutant p53, phospholipase D, MDA-MB-231 cells, breast cancer, protein stabilization, apoptosis inhibition, cell survival signaling, serum deprivation, tumor suppressor function
MeSH terms
Breast Neoplasms, Cell Survival, Humans, Phospholipase D, Protein Kinases, Tumor Suppressor Protein p53, Mitogen-Activated Protein Kinases, Cell Line, Tumor, TOR Serine-Threonine Kinases

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