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Updated: Apr 15, 2026

Defining Gene Functions in Tumorigenesis by Ex vivo Ablation of Floxed Alleles in Malignant Peripheral Nerve Sheath Tumor Cells
Published on: August 25, 2021
Focal adhesion kinase and p53 synergistically decrease neuroblastoma cell survival
Lauren A Gillory1, Jerry E Stewart1, Michael L Megison1
1Department of Surgery, University of Alabama, Birmingham, Alabama.
Abstract:
Neuroblastoma is the most common extracranial solid tumor of childhood and is responsible for over 15% of pediatric cancer deaths. Focal adhesion kinase (FAK) is a nonreceptor tyrosine kinase that is important in many facets of neuroblastoma tumor development and progression. The p53 oncogene, although wild type in most neuroblastomas, lacks significant function as a tumor suppressor in these tumors. Recent reports have found that FAK and p53 interact in some tumor types. We have hypothesized FAK and p53 coordinately control each other's expression and also interact in neuroblastoma. In the present study, we showed that not only do FAK and p53 interact but each one controls the expression of the other. In addition, we also examined the effects of FAK inhibition combined with p53 activation in neuroblastoma and showed that these two, in combination, had a synergistic effect on neuroblastoma cell survival. The findings from this present study help to further our understanding of the regulation of neuroblastoma tumorigenesis and may provide novel therapeutic strategies and targets for neuroblastoma and other pediatric solid tumors.
Insights
Focal adhesion kinase (FAK) and p53 interact and regulate each other in neuroblastoma. Inhibiting FAK and activating p53 synergistically reduced neuroblastoma cell survival, offering new therapeutic targets.
Area of Science:
- Pediatric Oncology
- Molecular Biology
- Cancer Research
Background:
- Neuroblastoma is a common childhood cancer with high mortality.
- Focal adhesion kinase (FAK) drives neuroblastoma progression.
- p53, often wild type, functions poorly as a tumor suppressor in neuroblastoma.
Purpose of the Study:
- To investigate the interaction and co-regulation of FAK and p53 in neuroblastoma.
- To evaluate the combined effect of FAK inhibition and p53 activation on neuroblastoma cells.
Main Methods:
- Investigated FAK and p53 interaction and expression control.
- Assessed the impact of combined FAK inhibition and p53 activation on neuroblastoma cell survival.
Main Results:
- Confirmed interaction between FAK and p53 in neuroblastoma.
- Demonstrated that FAK and p53 mutually regulate each other's expression.
- Showed synergistic reduction in neuroblastoma cell survival upon combined FAK inhibition and p53 activation.
Conclusions:
- FAK and p53 play a coordinated role in neuroblastoma tumorigenesis.
- Combined FAK inhibition and p53 activation represent a promising therapeutic strategy for neuroblastoma.
- Further research into FAK and p53 pathways may yield novel pediatric cancer treatments.
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