Interaction of Wnt pathway related variants with type 2 diabetes in a Chinese Han population

Aims. Epistasis from gene set based on the function-related genes may confer to the susceptibility of type 2 diabetes (T2D). The Wnt pathway has been reported to play an important role in the pathogenesis of T2D. Here we applied tag SNPs to explore the association between epistasis among genes from...

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Main Authors: Jian-Bo Zhou, Jin-Kui Yang, Bao-Hong Zhang, Jing Lu
Format: Article
Language:English
Published: PeerJ Inc. 2015-10-01
Series:PeerJ
Subjects:
Online Access:https://peerj.com/articles/1304.pdf
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author Jian-Bo Zhou
Jin-Kui Yang
Bao-Hong Zhang
Jing Lu
author_facet Jian-Bo Zhou
Jin-Kui Yang
Bao-Hong Zhang
Jing Lu
author_sort Jian-Bo Zhou
collection DOAJ
description Aims. Epistasis from gene set based on the function-related genes may confer to the susceptibility of type 2 diabetes (T2D). The Wnt pathway has been reported to play an important role in the pathogenesis of T2D. Here we applied tag SNPs to explore the association between epistasis among genes from Wnt and T2D in the Han Chinese population. Methods. Variants of fourteen genes selected from Wnt pathways were performed to analyze epistasis. Gene–gene interactions in case-control samples were identified by generalized multifactor dimensionality reduction (GMDR) method. We performed a case-controlled association analysis on a total of 1,026 individual with T2D and 1,157 controls via tag SNPs in Wnt pathway. Results. In single-locus analysis, SNPs in four genes were significantly associated with T2D adjusted for multiple testing (rs7903146C in TCF7L2, p = 3.21∗10−3, OR = 1.39, 95% CI [1.31–1.47], rs12904944G in SMAD3, p = 2.51∗10−3, OR = 1.39, 95% CI [1.31–1.47], rs2273368C in WNT2B, p = 4.46∗10−3, OR = 1.23, 95% CI [1.11–1.32], rs6902123C in PPARD, p = 1.14∗10−2, OR = 1.40, 95% CI [1.32–1.48]). The haplotype TGC constructed by TCF7L2 (rs7903146), DKK1 (rs2241529) and BTRC (rs4436485) showed a significant association with T2D (OR = 0.750, 95% CI [0.579–0.972], P = 0.03). For epistasis analysis, the optimized combination was the two locus model of WNT2B rs2273368 and TCF7L2rs7903146, which had the maximum cross-validation consistency. This was 9 out of 10 for the sign test at 0.0107 level. The best combination increased the risk of T2D by 1.47 times (95% CI [1.13–1.91], p = 0.0039). Conclusions. Epistasis between TCF7L2 and WNT2B is associated with the susceptibility of T2D in a Han Chinese population. Our results were compatible with the idea of the complex nature of T2D that would have been missed using conventional tools.
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spelling doaj.art-57c4c98f6c76448a8247fc07a4d96fb02023-12-03T10:33:33ZengPeerJ Inc.PeerJ2167-83592015-10-013e130410.7717/peerj.1304Interaction of Wnt pathway related variants with type 2 diabetes in a Chinese Han populationJian-Bo Zhou0Jin-Kui Yang1Bao-Hong Zhang2Jing Lu3Department of Endocrinology, Beijing Tongren Hospital, Capital Medical University, Beijing, ChinaDepartment of Endocrinology, Beijing Tongren Hospital, Capital Medical University, Beijing, ChinaHospital of Tsinghua University, Beijing, ChinaBeijing Key Laboratory of Diabetes Research and Care, Beijing Tongren Hospital, Capital Medical University, Beijing, ChinaAims. Epistasis from gene set based on the function-related genes may confer to the susceptibility of type 2 diabetes (T2D). The Wnt pathway has been reported to play an important role in the pathogenesis of T2D. Here we applied tag SNPs to explore the association between epistasis among genes from Wnt and T2D in the Han Chinese population. Methods. Variants of fourteen genes selected from Wnt pathways were performed to analyze epistasis. Gene–gene interactions in case-control samples were identified by generalized multifactor dimensionality reduction (GMDR) method. We performed a case-controlled association analysis on a total of 1,026 individual with T2D and 1,157 controls via tag SNPs in Wnt pathway. Results. In single-locus analysis, SNPs in four genes were significantly associated with T2D adjusted for multiple testing (rs7903146C in TCF7L2, p = 3.21∗10−3, OR = 1.39, 95% CI [1.31–1.47], rs12904944G in SMAD3, p = 2.51∗10−3, OR = 1.39, 95% CI [1.31–1.47], rs2273368C in WNT2B, p = 4.46∗10−3, OR = 1.23, 95% CI [1.11–1.32], rs6902123C in PPARD, p = 1.14∗10−2, OR = 1.40, 95% CI [1.32–1.48]). The haplotype TGC constructed by TCF7L2 (rs7903146), DKK1 (rs2241529) and BTRC (rs4436485) showed a significant association with T2D (OR = 0.750, 95% CI [0.579–0.972], P = 0.03). For epistasis analysis, the optimized combination was the two locus model of WNT2B rs2273368 and TCF7L2rs7903146, which had the maximum cross-validation consistency. This was 9 out of 10 for the sign test at 0.0107 level. The best combination increased the risk of T2D by 1.47 times (95% CI [1.13–1.91], p = 0.0039). Conclusions. Epistasis between TCF7L2 and WNT2B is associated with the susceptibility of T2D in a Han Chinese population. Our results were compatible with the idea of the complex nature of T2D that would have been missed using conventional tools.https://peerj.com/articles/1304.pdfEpistasisWnt pathwayType 2 diabetes
spellingShingle Jian-Bo Zhou
Jin-Kui Yang
Bao-Hong Zhang
Jing Lu
Interaction of Wnt pathway related variants with type 2 diabetes in a Chinese Han population
PeerJ
Epistasis
Wnt pathway
Type 2 diabetes
title Interaction of Wnt pathway related variants with type 2 diabetes in a Chinese Han population
title_full Interaction of Wnt pathway related variants with type 2 diabetes in a Chinese Han population
title_fullStr Interaction of Wnt pathway related variants with type 2 diabetes in a Chinese Han population
title_full_unstemmed Interaction of Wnt pathway related variants with type 2 diabetes in a Chinese Han population
title_short Interaction of Wnt pathway related variants with type 2 diabetes in a Chinese Han population
title_sort interaction of wnt pathway related variants with type 2 diabetes in a chinese han population
topic Epistasis
Wnt pathway
Type 2 diabetes
url https://peerj.com/articles/1304.pdf
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