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Characterization of a single nucleotide polymorphism in the microRNA-146a and epilepsy susceptibility

Grant number: 18/12057-0
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Effective date (Start): October 01, 2018
Effective date (End): June 30, 2019
Field of knowledge:Biological Sciences - Biochemistry - Molecular Biology
Principal Investigator:Manoela Marques Ortega
Grantee:Bruno Camporeze
Host Institution: Universidade São Francisco (USF). Campus Bragança Paulista. Bragança Paulista , SP, Brazil


Epilepsy has been described as the fourth most common neurological disease, affectting until 2% of world population that represents around 50 milions of patients. The authors showed a gap in the literature regarding the evaluation of the susceptibility of the epileptic development and the characterization of genetic alterations in the epileptic tissue. Although some studies have described miRNA146a involved in epileptogenesis through the regulation of inflammatory pathway, there are no studies in the Brazilian population about the relationship between single nucleotide polymorphism (SNP) in the MIR146a gene n.60G> C (rs2910464) and the risk of epilepsy. Objectives: To evaluate the MIR146a SNP n.60G> C as a risk factor and prognosis in patients affected by clinically refractory epilepsy. Methods: Patients affected by medically refractory epilepsy treated by selective amygdalohipocampectomy surgical approach will be retrospectively selected. The collection of clinical data will be carried out by registration in medical records. The study will be conducted on DNA samples extracted from epilephogenic tissue from patients with refractory epilepsy and on DNA samples extracted from peripheral blood leukocytes from healthy blood donors. DNA extraction followed by the real-time polymerase chain reaction (RT-PCR) will be performed to identify genotypes of the n.60G> C polymorphism in MIR146a. Furthermore, the expression of MIR146a in the different identified SNP genotypes will be evaluated by qPCR, as well as the expression of genes belonging to the NF-kB pro-inflammatory signaling pathway, such as IRAK-1, IRAK-2 and TRAF-6. The significance level pd0.05 will be adopted in the analysis of the results.

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
BOSCHIERO, MATHEUS NEGRI; CAMPOREZE, BRUNO; DOS SANTOS, JESSICA SILVA; DA COSTA, LEANDRO BORSARI; BONAFE, GABRIEL ALVES; QUEIROZ, LUCIANO DE SOUZA; VAN ROOST, DIRK; LIMA MARSON, FERNANDO AUGUSTO; PIRES DE AGUIAR, PAULO HENRIQUE; ORTEGA, MANOELA MARQUES. The single nucleotide variant n.60G > C in the microRNA-146a associated with susceptibility to drug-resistant epilepsy. Epilepsy Research, v. 162, . (18/12057-0)
BUAINAIN, RENATA PARISSI; BOSCHIERO, MATHEUS NEGRI; CAMPOREZE, BRUNO; DE AGUIAR, PAULO HENRIQUE PIRES; MARSON, FERNANDO AUGUSTO LIMA; ORTEGA, MANOELA MARQUES. Single-Nucleotide Variants in microRNAs Sequences or in their Target Genes Might Influence the Risk of Epilepsy: A Review. Cellular and Molecular Neurobiology, . (18/12057-0)

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