Rrp1B gene polymorphism (1307TC) in metastatic progression of breast cancer
| Autor: | Nageshwarao Tipirisetti, Surekha Rani Hanumanth, Raghunadha Rao Digumarthi, Surekha Damineni, Chiranjeevi Padala, Sandhya Annamaneni, Vishnupriya Satti, Phannibhushann Meka, Anuradha Cingeetham, Santhoshi Rani Nanchari |
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| Rok vydání: | 2014 |
| Předmět: |
Adult
Chromosomal Proteins Non-Histone Single-nucleotide polymorphism Breast Neoplasms Biology Polymorphism Single Nucleotide Metastasis Breast cancer Gene Frequency Genotype medicine Humans Genetic Predisposition to Disease Allele Neoplasm Metastasis Allele frequency Genotyping Genetic Association Studies Aged Aged 80 and over General Medicine Middle Aged medicine.disease Molecular biology Gene Expression Regulation Neoplastic Cancer research Disease Progression Ectopic expression Female Apoptosis Regulatory Proteins |
| Zdroj: | Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine. 36(2) |
| ISSN: | 1423-0380 |
| Popis: | Rrp1B (ribosomal RNA processing1 homolog B) is a novel candidate metastasis modifier gene in breast cancer. Functional gene assays demonstrated that a physical and functional interaction existing between Rrp1b and metastasis modifier gene SIPA1 causes reduction in the tumor growth and metastatic potential. Ectopic expression of Rrp1B modulates various metastasis predictive extra cellular matrix (ECM) genes associated with tumor suppression. The aim of this study is to determine the functional significance of single nucleotide polymorphism (SNP) in human Rrp1B gene (1307 TC; rs9306160) with breast cancer development and progression. The study consists of 493 breast cancer cases recruited from Nizam's Institute of Medical Sciences, Hyderabad, and 558 age-matched healthy female controls from rural and urban areas. Genomic DNA was isolated by non-enzymatic method. Genotyping was done by amplification refractory mutation system (ARMS-PCR) method. Genotypes were reconfirmed by sequencing and results were analyzed statistically. We have performed Insilco analysis to know the RNA secondary structure by using online tool m fold. The TT genotype and T allele frequencies of Rrp1B1307 TC polymorphism were significantly elevated in breast cancer (χ (2); p = 0.008) cases compared to controls under different genetic models. The presence of T allele had conferred 1.75-fold risk for breast cancer development (OR = 1.75; 95% CI = 1.15-2.67). The frequency of TT genotype of Rrp1b 1307TC polymorphism was significantly elevated in obese patients (χ (2); p = 0.008) and patients with advanced disease (χ (2); p = 0.01) and with increased tumor size (χ (2); p = 0.01). Moreover, elevated frequency of T allele was also associated with positive lymph node status (χ (2); p = 0.04) and Her2 negative receptor status (χ (2); p = 0.006). Presence of Rrp1b1307TT genotype and T allele confer strong risk for breast cancer development and progression. |
| Databáze: | OpenAIRE |
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