scholarly journals Functional single nucleotide polymorphisms within the cyclin-dependent kinase inhibitor 2A/2B region affect pancreatic cancer risk

Oncotarget ◽  
2016 ◽  
Vol 7 (35) ◽  
pp. 57011-57020 ◽  
Author(s):  
Daniele Campa ◽  
Manuela Pastore ◽  
Manuel Gentiluomo ◽  
Renata Talar-Wojnarowska ◽  
Juozas Kupcinskas ◽  
...  
Keyword(s):  
Pancreatic Cancer ◽  
Cancer Risk ◽  
Single Nucleotide Polymorphisms ◽  
Kinase Inhibitor ◽  
Nucleotide Polymorphisms ◽  
Cyclin Dependent Kinase ◽  
Single Nucleotide ◽  
Pancreatic Cancer Risk ◽  
Cyclin Dependent Kinase Inhibitor

scholarly journals A comprehensive assessment of single nucleotide polymorphisms associated with pancreatic cancer risk

Medicine ◽  
2020 ◽  
Vol 99 (24) ◽  
pp. e20345
Author(s):  
Zhuo-Miao Ye ◽  
Li-Juan Li ◽  
Jing-Hui Zheng ◽  
Chi Zhang ◽  
Yun-Xin Lu ◽  
...  
Keyword(s):  
Pancreatic Cancer ◽  
Cancer Risk ◽  
Single Nucleotide Polymorphisms ◽  
Comprehensive Assessment ◽  
Nucleotide Polymorphisms ◽  
Single Nucleotide ◽  
Pancreatic Cancer Risk

scholarly journals Single-Nucleotide Polymorphisms Sequencing Identifies Candidate Functional Variants at Prostate Cancer Risk Loci

Genes ◽  
2019 ◽  
Vol 10 (7) ◽  
pp. 547 ◽  
Author(s):  
Peng Zhang ◽  
Lori S. Tillmans ◽  
Stephen N. Thibodeau ◽  
Liang Wang
Keyword(s):  
Prostate Cancer ◽  
Cancer Risk ◽  
Single Nucleotide Polymorphisms ◽  
Protein Binding ◽  
Prostate Cancer Risk ◽  
Sequencing Analysis ◽  
Nucleotide Polymorphisms ◽  
Single Nucleotide ◽  
Functional Variants ◽  
Dependent Protein

Genome-wide association studies have identified over 150 risk loci that increase prostate cancer risk. However, few causal variants and their regulatory mechanisms have been characterized. In this study, we utilized our previously developed single-nucleotide polymorphisms sequencing (SNPs-seq) technology to test allele-dependent protein binding at 903 SNP sites covering 28 genomic regions. All selected SNPs have shown significant cis-association with at least one nearby gene. After preparing nuclear extract using LNCaP cell line, we first mixed the extract with dsDNA oligo pool for protein–DNA binding incubation. We then performed sequencing analysis on protein-bound oligos. SNPs-seq analysis showed protein-binding differences (>1.5-fold) between reference and variant alleles in 380 (42%) of 903 SNPs with androgen treatment and 403 (45%) of 903 SNPs without treatment. From these significant SNPs, we performed a database search and further narrowed down to 74 promising SNPs. To validate this initial finding, we performed electrophoretic mobility shift assay in two SNPs (rs12246440 and rs7077275) at CTBP2 locus and one SNP (rs113082846) at NCOA4 locus. This analysis showed that all three SNPs demonstrated allele-dependent protein-binding differences that were consistent with the SNPs-seq. Finally, clinical association analysis of the two candidate genes showed that CTBP2 was upregulated, while NCOA4 was downregulated in prostate cancer (p < 0.02). Lower expression of CTBP2 was associated with poor recurrence-free survival in prostate cancer. Utilizing our experimental data along with bioinformatic tools provides a strategy for identifying candidate functional elements at prostate cancer susceptibility loci to help guide subsequent laboratory studies.

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