Association of Casp3 microRNA Target Site (1049216) SNP With the Risk and Progress of Cervical Squamous Cell Carcinoma. Issue 2 (1st February 2017)

• Record Type: Journal Article
• Authors: Guo, Xin; Dong, Zhiming; Yamada, Sohsuke; Li, Yuanyuan; Guo, Yanli; Shen, Supeng; Liang, Jia; Tanimoto, Akihide; Guo, Wei
• Is Part Of: International journal of gynecological cancer. Volume 27:Issue 2(2017)
• Page Start: 206
• Page End: 213
• Publication Date: 2017-02-01
• Subjects: Caspase 3 -- miRNA -- Single nucleotide polymorphism -- Apoptosis -- Cervical squamous cell carcinoma; Generative organs, Female -- Cancer -- Periodicals; 616.99465
• DOI: 10.1097/IGC.0000000000000881
• Languages: English
• ISSNs: 1048-891X

Abstract

Abstract : Objective: In the present study, we investigated the relationship between the single-nucleotide polymorphism (SNP) of caspase-3 rs1049216 (C > T), a miRNA target site, and the risk and progression of cervical cancer. Materials and Methods: Using polymerase chain reaction–restriction fragment length polymorphism, we evaluated the genotype and distribution of caspase-3 rs1049216 in 515 patients with cervical squamous cell cancer and 415 controls. In additional experiments, we transfected luciferase reporter plasmids carrying T or C allele and/or miRNA mimics into the human cervical cell lines (HeLa and C-33A) to analyze its roles in the regulation of caspase-3 expression. By immunohistochemistry, the protein level of caspase-3 expression was examined in tumor tissues from 515 patients with cervical squamous cell cancer. Results: We found that the TT genotype of caspase-3 rs1049216 conferred a significantly decreased risk of cervical cancer (adjusted odds ratio, 0.35; 95% confidence interval, 0.154–0.581) and may be associated with the progression of this cancer. Although the expression of caspase-3 in the TT genotype was higher than that in CC/CT genotype in peripheral blood mononuclear cells and tumor tissues. Additional luciferase analysis showed that the rs1049216 variant T allele was associated with significantly higher luciferase activity, compared with the C allele in the transfected cells, and when cotransfected with miRNAs, miRNA-181a could downregulate the luciferase activity in the cells that transfected the construct containing C allele, compared with T allele, which had not happened in the presence of other miRNAs selected. Conclusions: These data indicate that through upregulating the expression of caspase-3, the TT genotype of caspase-3 rs1049216 can be associated with not only the risk of cervical cancer but also the progression of this cancer.