Research Papers:
Functional polymorphisms in pre-miR146a and pre-miR499 are associated with systemic lupus erythematosus but not with rheumatoid arthritis or Graves’ disease in Mexican patients
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Abstract
Isidro Alemán-Ávila1,2, Mayra Jiménez-Morales1, Olga Beltrán-Ramírez1, Rosa Elda Barbosa-Cobos3, Silvia Jiménez-Morales4, Fausto Sánchez-Muñoz5, Guillermo Valencia-Pacheco6, Luis M. Amezcua-Guerra5, Yaneli Juárez-Vicuña5, Dulce Milagro Razo-Blanco Hernández7, María Concepción Aguilera-Cartas8, Ricardo F. López-Villanueva9, Oscar Peralta-Zaragoza10, Carlos Tovilla-Zárate11 and Julian Ramírez-Bello1
1Endocrine and Metabolic Disease Unit Research, Hospital Juarez of Mexico, Mexico City, Mexico
2Superior School of Medicine Postgraduate Program, National Polytechnic Institute, Mexico City, Mexico
3Rheumatology Department, Hospital Juarez of Mexico, Mexico City, Mexico
4Laboratory of Cancer Genomics, National Institute of Genomic Medicine, Mexico City, Mexico
5Immunology Department, National Institute of Cardiology, Mexico City, Mexico
6Hematology Laboratory, Regional Research Center, Autonomous University of Yucatan, Yucatan, Mexico
7Research Direction, Hospital Juarez of Mexico, Mexico City, Mexico
8Endocrinology Department, Hospital Juarez of Mexico, Mexico City, Mexico
9Rheumatology Department, Regional Hospital General (ISSSTE), Health Service Yucatan, Yucatan, Mexico
10Direction of Chronic Infections and Cancer, Research Center in Infection Diseases, National Institute of Public Health, Cuernavaca, México
11Multidisciplinary Academic Division of Comalcalco, Juarez Autonomous University of Tabasco, Comalcalco, Mexico
Correspondence to:
Julian Ramírez-Bello, email: [email protected]
Keywords: systemic lupus erythematosus, rheumatoid arthritis, Graves’ disease, microRNA gene, susceptibility
Received: December 21, 2016 Accepted: June 30, 2017 Published: July 27, 2017
ABSTRACT
Recently, different microRNA (miRNA) gene polymorphisms have been evaluated in patients with rheumatoid arthritis (RA), systemic lupus erythematosus (SLE), and Graves’ disease (GD). In the present study, we examined three single-nucleotide polymorphisms (SNPs) located in the pre-miR-146a (rs2910164G/C), pre-miR-196a-2 (rs11614913C/T), and pre-miR-499 (rs3746444A/G) genes. Our study population included 900 Mexican patients with RA, SLE, or GD, as well as 486 healthy control individuals with no family history of inflammatory or autoimmune diseases. Genotyping was performed using TaqMan probes and a 5′ exonuclease assay. None of the investigated SNPs were associated with RA or GD susceptibility under any genetic model (co-dominant, recessive, or dominant). Genotype and allele frequencies of the miR-196a-2 rs11614913C/T polymorphism were similar between SLE cases and controls. In contrast, the miR-146a rs2910164G/C and miR-499 rs3746444A/G polymorphisms were associated with SLE susceptibility. These SNPs were not associated with lupus nephritis (LN). Our results suggest that polymorphisms in miR-146a, miR-196a-2, and miR-499 are not associated with RA or GD susceptibility. This is the first report documenting that the miR-146a rs2910164G/C and miR-499 rs3746444 polymorphisms are associated with SLE susceptibility but not with LN.
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