Open Access

Identification and association of the single nucleotide polymorphisms, C-509T, C+466T and T+869C, of the TGF-β1 gene in patients with asthma and their influence on the mRNA expression level of TGF-β1

  • Authors:
    • Michał Panek
    • Tadeusz Pietras
    • Artur Fabijan
    • Jan Zioło
    • Łukasz Wieteska
    • Beata Małachowska
    • Wojciech Fendler
    • Janusz Szemraj
    • Piotr Kuna
  • View Affiliations

  • Published online on: August 11, 2014     https://doi.org/10.3892/ijmm.2014.1894
  • Pages: 975-986
  • Copyright: © Panek et al. This is an open access article distributed under the terms of Creative Commons Attribution License [CC BY_NC 3.0].

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Abstract

Transforming growth factor-β1 (TGF-β1) is an important fibrogenic and immunomodulatory cytokine participating in the pathogenesis of a number of illnesses related to the growth, differentiation and migration of cells. It also plays a key role in inflammation, atherosclerosis, vascular inflammation and asthma. The aim of the present study was to evaluate the association between the expression of the TGF-β1 gene and its genetic polymorphisms, and the disease phenotype. The study comprised 173 patients with asthma, as well as 163 healthy volunteers as a control group. The gender profiles of the groups were similar (p=0.8415). Genotyping was performed by polymerase chain reaction (PCR)-high resolution melting (HRM). The results were verified by sequencing. Gene expression was evaluated by RT-PCR. This study evaluated the role and frequency of genetic polymorphisms (C-509T, C+466T and T+869C) of the TGF-β1 gene in the study group (patients with asthma) and the control group (healthy volunteers). The results obtained for the patients and healthy controls were as follows: C-509T single nucleotide polymorphism (SNP) (controls, TT/CT/CC-0.4444/0.5309/0.0247; patients, TT/CT/CC-0.3699/0.6012/0.0289), C+466T SNP (controls, TT/CT/CC-1.000/0.000/0.000; patients, TT/CT/CC-1.000/0.000/0.000) and T+869C SNP (controls, TT/CT/CC-1.000/0.000/0.000; patients, TT/CT/CC-1.000/0.000/0.000). Only the C-509T polymorphism was found to play a significant role in the pathogenesis of asthma, as well as a risk factor in the loss of the clinical control of the disease [TT vs. CC/CT, odds ratio (OR) 2.38; confidence interval (CI) 1.22-4.66; p=0.0103]. A significant difference was noted between the study and control groups with regard to the mRNA expression of TGF-β1 (p=0.0133). A higher level of expression of the TGF-β1 gene correlated with the time of diagnosis of patients over 16 years of age (p=0.0255). This study demonstrates that the C-509T SNP is a significant clinical risk factor for asthma and that the TGF-β1 cytokine contributes to the progression of the illness.
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October 2014
Volume 34 Issue 4

Print ISSN: 1107-3756
Online ISSN:1791-244X

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Spandidos Publications style
Panek M, Pietras T, Fabijan A, Zioło J, Wieteska Ł, Małachowska B, Fendler W, Szemraj J and Kuna P: Identification and association of the single nucleotide polymorphisms, C-509T, C+466T and T+869C, of the TGF-β1 gene in patients with asthma and their influence on the mRNA expression level of TGF-β1. Int J Mol Med 34: 975-986, 2014
APA
Panek, M., Pietras, T., Fabijan, A., Zioło, J., Wieteska, Ł., Małachowska, B. ... Kuna, P. (2014). Identification and association of the single nucleotide polymorphisms, C-509T, C+466T and T+869C, of the TGF-β1 gene in patients with asthma and their influence on the mRNA expression level of TGF-β1. International Journal of Molecular Medicine, 34, 975-986. https://doi.org/10.3892/ijmm.2014.1894
MLA
Panek, M., Pietras, T., Fabijan, A., Zioło, J., Wieteska, Ł., Małachowska, B., Fendler, W., Szemraj, J., Kuna, P."Identification and association of the single nucleotide polymorphisms, C-509T, C+466T and T+869C, of the TGF-β1 gene in patients with asthma and their influence on the mRNA expression level of TGF-β1". International Journal of Molecular Medicine 34.4 (2014): 975-986.
Chicago
Panek, M., Pietras, T., Fabijan, A., Zioło, J., Wieteska, Ł., Małachowska, B., Fendler, W., Szemraj, J., Kuna, P."Identification and association of the single nucleotide polymorphisms, C-509T, C+466T and T+869C, of the TGF-β1 gene in patients with asthma and their influence on the mRNA expression level of TGF-β1". International Journal of Molecular Medicine 34, no. 4 (2014): 975-986. https://doi.org/10.3892/ijmm.2014.1894