Differential microRNA expression in peripheral blood mononuclear cells from graves' disease patients

  • Rongjiao Liu
  • , Xinran Ma
  • , Lingyan Xu
  • , Dao Wang
  • , Xiaohua Jiang
  • , Wei Zhu
  • , Bin Cui
  • , Guang Ning
  • , Dongping Lin*
  • , Shu Wang
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

50 Scopus citations

Abstract

Context: Graves' disease (GD) is a common autoimmune disease that affects the thyroid gland. As anewclass of modulators of gene expression, microRNA (miRNA) have been reported to play a vital role in immune functions and in the development of autoimmunity and autoimmune disease. Objective: This study sought to characterize the different miRNA expression in peripheral blood mononuclear cells (PBMC) from GD patients and healthy individuals and examine their direct responses to T3 treatment. Methods: Forty-one patients who met criteria for initial GD, 13 GD patients in remission, and 35 healthy controls were recruited. Microarray was used to analyze the expression patterns of miRNA in PBMC obtained from initial GD patients and healthy controls. Three top-ranked miRNA were selected and validated by TaqMan-based real-time PCR in healthy controls, initial GD patients, and GD patients in remission. Furthermore, we cultured PBMC from healthy donors with or without T3 treatment to examine direct effects of T3 on selective miRNA. Results: There were sixteen miRNA expressed differently in PBMC from initial GD patients compared with normal subjects. Further analysis consistently showed that the expression of miR-154*, miR-376b, and miR-431*were suppressed in PBMC from initial GD patients. In addition, their expression levels were recovered in GD patients in remission. Meanwhile, T3 treatment could directly inhibit the expression of these miRNA in cultured PBMC from healthy subjects. Conclusions: The present work revealed that differentially expressed miRNA were associated with GD and T3 exposure, which might serve as novel biomarkers of GD and potential targets for GD treatment.

Original languageEnglish
Pages (from-to)E968-E972
JournalJournal of Clinical Endocrinology and Metabolism
Volume97
Issue number6
DOIs
StatePublished - Jun 2012
Externally publishedYes

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