Polymorphisms of glutathione S-transferase π 1 and toll-like receptors 2 and 9: Association with breast cancer susceptibility

  • Authors:
    • Mohammad F. Al‑Harras
    • Maha E. Houssen
    • Mohamed E. Shaker
    • Kamel Farag
    • Omar Farouk
    • Rehan Monir
    • Rasha El‑Mahdy
    • Ekbal M. Abo‑Hashem
  • View Affiliations

  • Published online on: January 28, 2016     https://doi.org/10.3892/ol.2016.4159
  • Pages: 2182-2188
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Abstract

Polymorphisms in antioxidant enzymes and innate immune receptors have been implicated in the development of various types of cancer. The present study aimed to investigate whether polymorphisms of glutathione S‑transferase π 1 (GSTP1) and toll‑like receptors (TLRs) 2 and 9 are associated with susceptibility to breast cancer among females. The study was conducted on 72 Egyptian female patients with breast cancer, along with 100 healthy volunteers. Polymorphisms of GSTP1 (codon 105 Ile/Val) and TLR9 rs187084 (1237T/C) genes were assessed by polymerase chain reaction (PCR)‑restriction fragment length polymorphism, while the -196 to ‑174 deletion/insertion (del/ins) polymorphism of TLR2 was detected by PCR. The results indicated a decrease in GSTP1 Val allele frequency in breast cancer patients compared with healthy controls, at rates of 22.9 vs. 32.5%, respectively. In addition, the breast cancer group demonstrated a decreased TLR9 C allele frequency compared with the control group, at rates of 36.1 vs. 51.5%, respectively (P=0.0047). A non‑significant difference was detected in the frequency of the TLR2 ‑196 to ‑174 del allele in breast cancer patients when compared to normal controls. In conclusion, these results suggested that the GSTP1 Val and TLR9 1237C alleles, but not TLR2 -196 to ‑174 del, are likely to be associated with breast cancer development among females.
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March-2016
Volume 11 Issue 3

Print ISSN: 1792-1074
Online ISSN:1792-1082

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Spandidos Publications style
Al‑Harras MF, Houssen ME, Shaker ME, Farag K, Farouk O, Monir R, El‑Mahdy R and Abo‑Hashem EM: Polymorphisms of glutathione S-transferase π 1 and toll-like receptors 2 and 9: Association with breast cancer susceptibility. Oncol Lett 11: 2182-2188, 2016.
APA
Al‑Harras, M.F., Houssen, M.E., Shaker, M.E., Farag, K., Farouk, O., Monir, R. ... Abo‑Hashem, E.M. (2016). Polymorphisms of glutathione S-transferase π 1 and toll-like receptors 2 and 9: Association with breast cancer susceptibility. Oncology Letters, 11, 2182-2188. https://doi.org/10.3892/ol.2016.4159
MLA
Al‑Harras, M. F., Houssen, M. E., Shaker, M. E., Farag, K., Farouk, O., Monir, R., El‑Mahdy, R., Abo‑Hashem, E. M."Polymorphisms of glutathione S-transferase π 1 and toll-like receptors 2 and 9: Association with breast cancer susceptibility". Oncology Letters 11.3 (2016): 2182-2188.
Chicago
Al‑Harras, M. F., Houssen, M. E., Shaker, M. E., Farag, K., Farouk, O., Monir, R., El‑Mahdy, R., Abo‑Hashem, E. M."Polymorphisms of glutathione S-transferase π 1 and toll-like receptors 2 and 9: Association with breast cancer susceptibility". Oncology Letters 11, no. 3 (2016): 2182-2188. https://doi.org/10.3892/ol.2016.4159