AXIN2 Polymorphisms, the ß-Catenin Destruction Complex Expression Profile and Breast Cancer Susceptibility.
Asian Pac J Cancer Prev
; 16(16): 7277-84, 2015.
Article
em En
| MEDLINE
| ID: mdl-26514524
ABSTRACT
BACKGROUND:
The Wnt/ß-catenin signaling pathway is an important regulator of cellular functions such as proliferation, survival and cell adhesion. Wnt/ß-catenin signaling is associated with tumor initiation and progression; ß-catenin mutations explain only 30% of aberrant signaling found in breast cancer, indicating that other components and/or regulation of the Wnt/ß-catenin pathway may be involved.OBJECTIVE:
We evaluated AXIN2 rs2240308 and rs151279728 polymorphisms, and expression profiles of ß-catenin destruction complex genes in breast cancer patients. MATERIALS ANDMETHODS:
We collected peripheral blood samples from 102 breast cancer and 102 healthy subjects. The identification of the genetic variation was performed using PCR-RFLPs and DNA sequencing. RT-qPCR was used to determine expression profiles.RESULTS:
We found significant association of AXIN2 rs151279728 and rs2240308 polymorphisms with breast cancer risk. Significant increase was observed in AXIN2 level expression in breast cancer patients. Further analyses showed APC, ß-catenin, CK1α, GSK3ß and PP2A gene expression to be associated to clinic-pathological characteristics.CONCLUSIONS:
The present study demonstrated, for the first time, that AXIN2 genetic defects and disturbance of ß-catenin destruction complex expression may be found in breast cancer patients, providing additional support for roles of Wnt/ß-catenin pathway dysfunction in breast cancer tumorigenesis. However, the functional consequences of the genetic alterations remain to be determined.
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Base de dados:
MEDLINE
Assunto principal:
Polimorfismo Genético
/
Neoplasias da Mama
/
Carcinoma Ductal de Mama
/
Predisposição Genética para Doença
/
Beta Catenina
/
Proteína Axina
Tipo de estudo:
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Limite:
Female
/
Humans
/
Middle aged
Idioma:
En
Ano de publicação:
2015
Tipo de documento:
Article