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Altered expression of circular RNA in primary Sjögren’s syndrome

  • Lin-Chong Su
  • Wang-Dong Xu
  • Xiao-Yan Liu
  • Lu FuEmail author
  • An-Fang HuangEmail author
Original Article
  • 37 Downloads

Abstract

Objectives

This study evaluated expression of circRNA in primary Sjögren’s syndrome (pSS) patients so as to find novel biomarkers for pSS screening and discussed possible role of circRNA in pSS. We also evaluated expression profile of circRNA in systemic lupus erythematosus (SLE) patients.

Methods

Microarray analysis detected circRNA expression in PBMCs from five paired pSS, SLE patients, and controls. Then, differentially expressed circRNAs were validated in 30 pSS patients as compared to 30 SLE patients, healthy controls. CircRNAs interacting with miRNAs were discussed by Arraystar’s homemade miRNA target prediction software. ROC analysis assessed the diagnostic value.

Results

We identified 234 differentially expressed circRNAs in pSS patients and verified five selected circRNAs (including hsa_circRNA_001264, hsa_circRNA_104121, hsa_circRNA_045355, hsa_circRNA_103461, hsa_circRNA_105034). Expression of hsa_circRNA_001264, hsa_circRNA_104121, and hsa_circRNA_045355 was strongly related to some clinical, laboratory parameters, and disease activity index in pSS patients. ROC analysis indicated potential diagnostic ability for the three circRNAs in pSS patients. One hundred and forty-eight circRNAs were differently expressed between lupus patients and controls.

Conclusion

This study provides evidence that hsa_circRNA_001264, hsa_circRNA_104121, and hsa_circRNA_045355 might be biomarkers for pSS, correlate with pSS etiology.

Key Points

Many circRNAs were dysregulated in pSS patients.

Differentially expressed circRNAs correlated with pSS clinical, laboratory features.

CircRNAs may be biomarkers for pSS.

Keywords

Autoimmunity CircRNA Primary Sjögren’s syndrome 

Abbreviations

CircRNA

Circular RNA

BMI

Body mass index

RF

Rheumatoid factor

ANA

Anti-nuclear antibody

Notes

Authors’ contribution

LS, WX, XL, LF, and AH designed this study. LS, WX, XL, LF, and AH collected data. LS, WX, LF, and AF did laboratory test and statistical analysis. LS, WX, LF, and AF wrote the paper.

Funding information

This study was funded by Sichuan Provincial Science and Technology Program (2019YJ0540), the Key Project of Sichuan Education Department (17ZA0430).

Compliance with ethical standards

Disclosure

None.

Statement on consent for publication

The whole authors permitted submission of the paper.

Supplementary material

10067_2019_4728_Fig4_ESM.png (1.2 mb)
Supplementary figure 1

Detailed annotation for circRNA-miRNA interactions. Representative notation example shows the complementary situation of hsa_circRNA_001264. (PNG 1257 kb)

10067_2019_4728_MOESM1_ESM.tif (232 kb)
High resolution image (TIF 232 kb)
10067_2019_4728_MOESM2_ESM.docx (16 kb)
Supplementary table 1 Primer sequence of internal reference and the 5 circRNAs. (DOCX 16 kb)
10067_2019_4728_MOESM3_ESM.docx (21 kb)
Supplementary table 2 The top eight elevated, six reduced circRNAs differed in pSS patients. (DOCX 20 kb)
10067_2019_4728_MOESM4_ESM.docx (19 kb)
Supplementary table 3 Association of hsa_circRNA_001264, hsa_circRNA_104121, hsa_circRNA_045355 expression and pSS patients’ laboratory characteristics. (DOCX 19 kb)

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Copyright information

© International League of Associations for Rheumatology (ILAR) 2019

Authors and Affiliations

  1. 1.Department of Rheumatology and ImmunologyMinda Hospital of Hubei Minzu UniversityEnshiChina
  2. 2.Department of Evidence-Based MedicineSouthwest Medical UniversityLuzhouChina
  3. 3.Laboratory Animal CenterSouthwest Medical UniversityLuzhouChina
  4. 4.Department of Rheumatology and ImmunologyAffiliated Hospital of Southwest Medical UniversityLuzhouChina

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