6533b837fe1ef96bd12a2875

RESEARCH PRODUCT

Gene polymorphisms of micrornas in Helicobacter pylori-induced high risk atrophic gastritis and gastric cancer.

Simonas JuzenasThomas WexMarcis LejaGuntis AncansVitalija PetrenkieneAudrius IvanauskasJurgita SkiecevicieneIndre BruzaiteJuozas KupcinskasAlexander LinkUgne GyvyteP. MalfertheinerRuta SteponaitieneLimas Kupčinskas

subject

Bacterial DiseasesAtrophic gastritislcsh:MedicineGastroenterologyRNA interferenceGastrointestinal CancersBasic Cancer ResearchGenotypeOdds Ratiolcsh:ScienceStomach and DuodenumGeneticsMultidisciplinarybiologyInfectious DiseasesOncologyGastritisMedicineGastritismedicine.symptomResearch ArticleGastritis Atrophicmedicine.medical_specialtySingle-nucleotide polymorphismGastroenterology and HepatologyPolymorphism Single NucleotideWhite PeopleStomach NeoplasmsInternal medicineGastrointestinal TumorsGeneticsmedicineHumansAlleleBiologyHelicobacter pylorilcsh:RCancers and NeoplasmsCancerOdds ratioHelicobacter pylorimedicine.diseasebiology.organism_classificationMicroRNAsGastric CancerLogistic ModelsGenetic Polymorphismlcsh:QGene expressionPopulation Genetics

description

Background and aims MicroRNAs (miRNAs) are known for their function as translational regulators of tumor suppressor or oncogenes. Single nucleotide polymorphisms (SNPs) in miRNAs related genes have been shown to affect the regulatory capacity of miRNAs and were linked with gastric cancer (GC) and premalignant gastric conditions. The purpose of this study was to evaluate potential associations between miRNA-related gene polymorphisms (miR-27a, miR-146a, miR-196a-2, miR-492 and miR-608) and the presence of GC or high risk atrophic gastritis (HRAG) in European population. Methods Gene polymorphisms were analyzed in 995 subjects (controls: n = 351; GC: n = 363; HRAG: n = 281) of European descent. MiR-27a T>C (rs895819), miR-146a G>C (rs2910164), miR-196a-2 C>T (rs11614913), miR-492 G>C (rs2289030) and miR-608 C>G (rs4919510) SNPs were genotyped by RT-PCR. Results Overall, SNPs of miRNAs were not associated with the presence of GC or HRAG. We observed a tendency for miR-196a-2 CT genotype to be associated with higher risk of GC when compared to CC genotype, however, the difference did not reach the adjusted P-value (odds ratio (OR) - 1.46, 95% confidence interval (CI) 1.03-2.07, P = 0.032). MiR-608 GG genotype was more frequent in GC when compared to controls (OR −2.34, 95% CI 1.08–5.04), but significance remained marginal (P = 0.029). A similar tendency was observed in a recessive model for miR-608, where CC + CG vs GG genotype comparison showed a tendency for increased risk of GC with OR of 2.44 (95% CI 1.14–5.22, P = 0.021). The genotypes and alleles of miR-27a, miR-146a, miR-196a-2, miR-492 and miR-608 SNPs had similar distribution between histological subtypes of GC and were not linked with the presence of diffuse or intestinal-type GC. Conclusions Gene polymorphisms of miR-27a, miR-146a, miR-196a-2, miR-492, miR-492a and miR-608 were not associated with the presence of HRAG, GC or different histological subtypes of GC in European subjects.

yearjournalcountryeditionlanguage
2013-09-14PLoS ONE
10.1371/journal.pone.0087467http://europepmc.org/articles/PMC3903675?pdf=render