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Rheumatology International

, Volume 33, Issue 5, pp 1283–1288 | Cite as

Association of TLR4 gene non-missense single nucleotide polymorphisms with rheumatoid arthritis in Chinese Han population

  • Hongju Yang
  • Chuanyu Wei
  • Qin Li
  • Tao Shou
  • Yan Yang
  • Chunjie Xiao
  • Min Yu
  • Ming Li
  • Zhili Yang
  • Jieying Zhang
  • Bingrong Zheng
Original Article

Abstract

Toll-like receptor4 (TLR4) plays an important role in the induction and regulation of the innate or adaptive immune responses. Thus, the genetic variation in TLR4 gene may influence the development of autoimmune diseases such as rheumatoid arthritis (RA). Several studies have investigated the roles of genetic polymorphisms of TLR4 gene in RA, but most of these studies were restricted to two cosegregating functional missense polymorphisms Asp299Gly and Thr399Ile. To determine whether non-missense genetic polymorphisms located in regulatory region of TLR4 are related to RA in a Chinese Han population, four single nucleotide polymorphisms (SNPs) situated on 3′ untranslating region (UTR) and 5′ UTR were genotyped in 213 RA patients and 247 unrelated ethnically matched controls using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) and direct sequencing techniques. Significant genetic associations were observed with the 3′ UTR SNP rs41426344 and rs7873784. The minor allele C and homozygotic variant genotype CC of rs41426344 and minor allele C of rs7873784 were identified to be risk factors for the development of RA in Chinese Han people. Furthermore, by comparing the variation allele frequencies to other populations, prevalent genetic ethnic specificity was observed in all the four SNPs. Our study suggested that the effect of non-missense polymorphisms located in regulatory region would not be neglected in disease association analysis.

Keywords

Toll-like receptor4 (TLR4) 3′ Untranslating region (UTR) and 5′ UTR single nucleotide polymorphisms (SNPs) Rheumatoid arthritis (RA) Chinese Han people 

Notes

Acknowledgments

This study was supported by Key Project of Applied Basic Research Program of Yunnan Province (Grant No. 2011FA004), Yunnan Province Young Scientist Project (Grant No. 2009CI044), Yunnan University Key Teacher Project (Grant No. 21132014), Natural Science Foundation of Yunnan University (2010YB005).

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Hongju Yang
    • 1
  • Chuanyu Wei
    • 2
  • Qin Li
    • 3
  • Tao Shou
    • 3
  • Yan Yang
    • 3
  • Chunjie Xiao
    • 1
  • Min Yu
    • 1
  • Ming Li
    • 1
  • Zhili Yang
    • 1
  • Jieying Zhang
    • 1
  • Bingrong Zheng
    • 1
  1. 1.Key Laboratory of Bioresources Conservation and Utilization and Human Genetics Center of Yunnan UniversityKunmingPeople’s Republic of China
  2. 2.Yan’an Affiliated Hospital of Kunming Medical CollegeKunmingPeople’s Republic of China
  3. 3.Kunhua Affiliated Hospital of Kunming Medical CollegeKunmingPeople’s Republic of China

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