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Updated: Jul 10, 2026
14:57
Yeast As a Chassis for Developing Functional Assays to Study Human P53
Published on: August 4, 2019
p53 pathway gene single nucleotide polymorphisms and chronic lymphocytic leukemia
Onoshua Lahiri1, Scott Harris, Graham Packham
1Cancer Research UK Clinical Centre, University of Southampton School of Medicine, Southampton General Hospital, Tremona Road, Southampton, SO16 6YD, United Kingdom.
Cancer Genetics and Cytogenetics
|November 6, 2007
Summary
Genetic variations in the p53 pathway, specifically BAX G125A single-nucleotide polymorphisms (SNPs), may influence chronic lymphocytic leukemia (CLL) progression. These BAX SNPs correlated with advanced disease stages in CLL patients.
Area of Science:
- Oncology
- Genetics
- Molecular Biology
Background:
- The p53 pathway is crucial in chronic lymphocytic leukemia (CLL) pathogenesis.
- Investigating genetic variations in key p53 pathway components may reveal prognostic markers for CLL.
Purpose of the Study:
- To examine the association between single-nucleotide polymorphisms (SNPs) in the p53 gene (R72P), and its downstream targets BAX (G125A) and MDM2 (SNP309), with clinical parameters in CLL patients.
- To understand the functional impact of the BAX G125A SNP on gene expression.
Main Methods:
- Genotyping of p53 R72P, BAX G125A, and MDM2 SNP309 in 83 CLL patients.
- Correlation analysis of SNP genotypes with clinical parameters and prognostic markers.
- Reporter assays to assess the effect of BAX G125A SNP on promoter activity.
Main Results:
- No significant association was found between p53 R72P or MDM2 SNP309 and CLL clinical parameters.
- The BAX G125A SNP was significantly associated with a more advanced Binet stage at diagnosis.
- Reporter assays revealed that the BAX G125A SNP increased basal promoter activity by 1.8-fold without affecting p53 trans-activation.
Conclusions:
- The BAX G125A SNP may play a role in CLL disease progression.
- Further research is needed to elucidate the precise role of p53 pathway SNPs in CLL pathogenesis and prognosis.
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