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Clinical Rheumatology

, Volume 32, Issue 5, pp 609–615 | Cite as

Identification of transcription regulatory relationships in rheumatoid arthritis and osteoarthritis

  • Guofeng Li
  • Ning Han
  • Zengchun LiEmail author
  • Qingyou Lu
Original Article

Abstract

Rheumatoid arthritis (RA) is recognized as the most crippling or disabling type of arthritis, and osteoarthritis (OA) is the most common form of arthritis. These diseases severely reduce the quality of life, and cause high socioeconomic burdens. However, the molecular mechanisms of RA and OA development remain elusive despite intensive research efforts. In this study, we aimed to identify the potential transcription regulatory relationships between transcription factors (TFs) and differentially co-expressed genes (DCGs) in RA and OA, respectively. We downloaded the gene expression profiles of RA and OA from the Gene Expression Omnibus and analyzed the gene expression using computational methods. We identified a set of 4,076 DCGs in pairwise comparisons between RA and OA patients, RA and normal donors (NDs), or OA and ND. After regulatory network construction and regulatory impact factor analysis, we found that EGR1, NFE2L1, and NFYA were crucial TFs in the regulatory network of RA and NFYA, CBFB, CREB1, YY1 and PATZ1 were crucial TFs in the regulatory network of OA. These TFs could regulate the DCGs expression to involve RA and OA by promoting or inhibiting their expression. Altogether, our work may extend our understanding of disease mechanisms and may lead to an improved diagnosis. However, further experiments are still needed to confirm these observations.

Keywords

Gene expression Osteoarthritis Regulatory network Rheumatoid arthritis 

Notes

Acknowledgments

The project was supported by the foundation of Pudong District (PW2011B-2 and PWRq2012-13).

Disclosures

All authors declare that there is no conflict of interest.

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Copyright information

© Clinical Rheumatology 2013

Authors and Affiliations

  1. 1.Department of Traumatology, East HospitalTongji University School of MedicineShanghaiChina

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