Toll‑like receptor 4 single‑nucleotide polymorphisms Asp299Gly and Thr399Ile in ovarian cancers

Wang,An‑Cong; Wu,Feng‑Xia; Gao,Yong‑Sheng; Sheng,Xiu‑Gui

doi:10.3892/ol.2014.2113

Toll‑like receptor 4 single‑nucleotide polymorphisms Asp299Gly and Thr399Ile in ovarian cancers

Authors:
- An‑Cong Wang
- Feng‑Xia Wu
- Yong‑Sheng Gao
- Xiu‑Gui Sheng
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Affiliations: Department of Reproductive Medicine, Linyi People's Hospital, Linyi, Shandong 276003, P.R. China, Department of Anatomy, Shandong University, Jinan, Shandong 250012, P.R. China, Department of Pathology, Shandong Cancer Hospital and Institute, Jinan, Shandong 250117, P.R. China, Department of Gynecologic Oncology, Shandong Cancer Hospital and Institute, Jinan, Shandong 250117, P.R. China
Published online on: May 7, 2014 https://doi.org/10.3892/ol.2014.2113
Pages: 438-440

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Abstract

Toll‑like receptor (TLR4) 4 is present in numerous cell types and serves as the first point of defense in the innate immune system. Single‑nucleotide polymorphisms (SNPs) are present in a number TLR genes and have been associated with various infection and inflammation disorders. Asp299Gly and Thr399Ile, TLR4 SNPs, are associated with tumor progression. In the present study, cases of ovarian cancer were analyzed with regards to Asp299Gly and Thr399Ile of the TLR4 gene. Genotype analysis was performed using DNA from tissue samples from stage I‑IV patients with ovarian cancer. DNA from tissue samples was extracted and analyzed by a pyrosequencing method following multiplex polymerase chain reaction. The genotypes of these SNPs were analyzed in the present study in a population of 105 patients, with different types of ovarian cancer, between 2004 and 2012. The allele frequencies for TLR4 Asp299Gly identified in this population were 1.00 (A) and 0.00 (G); for TLR4 Thr399Ile the allele frequencies were; 1.00 (C) and 0.00 (T). For TLR4 Asp299Gly the observed genotype frequency was 1.00 (AA), 0.00 (AG) and 0.0 (GG). In TLR4 Thr399Ile the observed genotype frequencies were 1.00 (CC), 0.00 (CT) and 0.00 (TT). TLR4 Asp299Gly and Thr399Ile alleles were not detected in the patients. These results indicated that the TLR4 299Gly and 399Ile alleles were exhibited at a lower frequency in the ovarian cancer patients that were examined.

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