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Hernia
Published in: Hernia 4/2014

01-08-2014 | Original Article

Genetic analysis of the TBX2 gene promoter in indirect inguinal hernia

Authors: Y. Zhang, Q. Han, H. Fan, W. Li, Q. Xing, B. Yan

Published in: Hernia | Issue 4/2014

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Abstract

Purpose

Inguinal hernia is a common disease, majority of which are indirect inguinal hernia (IIH). A positive family history indicates that genetic factors play important roles in the IIH development. To date, genetic causes for IIH remain unknown. T-box transcription factor 2 (TBX2) is a major regulator in the morphogenesis and organogenesis. The human TBX2 gene is widely expressed in fetal and adult tissues, including muscle and connective tissues. Therefore, we speculated that altered TBX2 gene expression may be involved in the IIH formation.

Methods

IIH patients (n = 129) and ethnic-matched healthy subjects (n = 198) were recruited for this study. The human TBX2 gene promoters were generated with PCR and directly sequenced to identify DNA sequence variants (DSVs). Furthermore, biological functions of the DSVs were examined with reporter gene constructs in cultured cells.

Results

Total six DSVs within the TBX2 gene promoter were identified. A heterozygous DSV (g.59476307G>C) was identified in an IIH patient, but in none of controls, which significantly decreased the TBX2 gene promoter activities. Another heterozygous DSV (g.59476704G>C) was only found in one control, which did not affect TBX2 gene promoter activities. Four DSVs, g.59476316C>A (rs73991913), g.59476415T>C (rs1476781), g.59476510G>C (rs4455026) and g.59476892C>T (rs2286524), all of which were single nucleotide polymorphisms, were found in both IIH patients and controls with similar frequencies.

Conclusions

Our data suggested that the DSV within the TBX2 gene promoter was implicated in the IIH development as a rare cause.
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Metadata
Title
Genetic analysis of the TBX2 gene promoter in indirect inguinal hernia
Authors
Y. Zhang
Q. Han
H. Fan
W. Li
Q. Xing
B. Yan
Publication date
01-08-2014
Publisher
Springer Paris
Published in
Hernia / Issue 4/2014
Print ISSN: 1265-4906
Electronic ISSN: 1248-9204
DOI
https://doi.org/10.1007/s10029-013-1199-z

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