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Published in: Arthritis Research & Therapy 1/2018

Open Access 01-12-2018 | Research article

Integrating genome-wide DNA methylation and mRNA expression profiles identified different molecular features between Kashin-Beck disease and primary osteoarthritis

Authors: Yan Wen, Ping Li, Jingcan Hao, Chen Duan, Jing Han, Awen He, Yanan Du, Li Liu, Xiao Liang, Feng Zhang, Xiong Guo

Published in: Arthritis Research & Therapy | Issue 1/2018

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Abstract

Background

Kashin-Beck disease (KBD) is an endemic osteochondropathy of unknown etiology. Osteoarthritis (OA) is a form of degenerative joint disease sharing similar clinical manifestations and pathological changes to articular cartilage with KBD.

Methods

A genome-wide DNA methylation profile of articular cartilage from five KBD patients and five OA patients was first performed using the Illumina Infinium HumanMethylation450 BeadChip. Together with a previous gene expression profiling dataset comparing KBD cartilage with OA cartilage, an integrative pathway enrichment analysis of the genome-wide DNA methylation and the mRNA expression profiles conducted in articular cartilage was performed by InCroMAP software.

Results

We identified 241 common genes altered in both the DNA methylation profile and the mRNA expression profile of articular cartilage of KBD versus OA, including CHST13 (NM_152889, fold-change = 0.5979, P methy = 0.0430), TGFBR1 (NM_004612, fold-change = 2.077, P methy = 0.0430), TGFBR2 (NM_001024847, fold-change = 1.543, P methy = 0.037), TGFBR3 (NM_001276, fold-change = 0.4515, P methy = 6.04 × 10−4), and ADAM12 (NM_021641, fold-change = 1.9768, P methy = 0.0178). Integrative pathway enrichment analysis identified 19 significant KEGG pathways, including mTOR signaling (P = 0.0301), glycosaminoglycan biosynthesis-chondroitin sulfate/dermatan sulfate (P = 0.0391), glycosaminoglycan biosynthesis-keratan sulfate (P = 0.0278), and PI3K-Akt signaling (P = 0.0243).

Conclusion

This study identified different molecular features between Kashin-Beck disease and primary osteoarthritis and provided novel clues for clarifying the pathogenetic differences between KBD and OA.
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Metadata
Title
Integrating genome-wide DNA methylation and mRNA expression profiles identified different molecular features between Kashin-Beck disease and primary osteoarthritis
Authors
Yan Wen
Ping Li
Jingcan Hao
Chen Duan
Jing Han
Awen He
Yanan Du
Li Liu
Xiao Liang
Feng Zhang
Xiong Guo
Publication date
01-12-2018
Publisher
BioMed Central
Published in
Arthritis Research & Therapy / Issue 1/2018
Electronic ISSN: 1478-6362
DOI
https://doi.org/10.1186/s13075-018-1531-1

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