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Sex-specific association of X-linked toll-like receptor 7 (TLR7) with male systemic lupus erythematosus

  • Nan Shen*
  • , Qiong Fu
  • , Yun Deng
  • , Xiaoxia Qian
  • , Jian Zhao
  • , Kenneth M. Kaufman
  • , Yee Ling Wu
  • , C. Yung Yu
  • , Yuanjia Tang
  • , Ji-Yih Chen
  • , Wanling Yang
  • , Maida Wong
  • , Aya Kawasaki
  • , Naoyuki Tsuchiya
  • , Takayuki Sumida
  • , Yasushi Kawaguchi
  • , Hwee Siew Howe
  • , Mo Yin Mok
  • , So-Young Bang
  • , Fei-Lan Liu
  • Deh-Ming Chang, Yoshinari Takasaki, Hiroshi Hashimoto, John B. Harley, Joel M. Guthridge, Jennifer M. Grossman, Rita M. Cantor, Yeong Wook Song, Sang-Cheol Bae, Shunle Chen, Bevra H. Hahn, Yu Lung Lau, Betty P. Tsao*
*Corresponding author for this work

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

Systemic lupus erythematosus (SLE) is a multisystem, autoimmune disease that predominantly affects women. Previous findings that duplicated Toll-like receptor 7 (Tlr7) promotes lupus-like disease in male BXSB mice prompted us to evaluate TLR7 in human SLE. By using a candidate gene approach, we identified and replicated association of a TLR7 3′UTR SNP, rs3853839 (G/C), with SLE in 9,274 Eastern Asians (Pcombined = 6.5 × 10-10), with a stronger effect in male than female subjects [odds ratio, male vs. female = 2.33 (95% CI = 1.64-3.30) vs. 1.24 (95% CI = 1.14-1.34); P = 4.1 × 10-4]. G-allele carriers had increased TLR7 transcripts and more pronounced IFN signature than C-allele carriers; heterozygotes had 2.7-fold higher transcripts of G-allele than C-allele. These data established a functional polymorphism in type I IFN pathway gene TLR7 predisposing to SLE, especially in Chinese and Japanese male subjects.
Original languageEnglish
Pages (from-to)15838-15843
JournalPNAS: Proceedings of the National Academy of Sciences of the United States of America
Volume107
Issue number36
Online published23 Aug 2010
DOIs
Publication statusPublished - 7 Sept 2010
Externally publishedYes

Research Keywords

  • Autoimmunity
  • Disease susceptibility
  • Functional polymorphism
  • Interferon
  • Type I

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