MAGI2-ren aldaera genetikoaren asoziazioa eta adierazpen alterazioa eritasun zeliakoan
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Lotura hertsiak (LH), zeluletan agertzen diren zelularteko loturak dira. Eritasun zeliakoan (EZ), heste meharreko LH egiturak erabat apurtuta daude eta ondorioz zelularteko fluxua emendatu egiten da, irentsitako glutenaren barneraketa erraztuz. Ikerketa honen helburua, zeliakian LHen galera funtzionalaren eragile genetikoak identifikatzea eta karakterizatzea izan da. Lehendik LHen bidezidorrarekin erlazionatuta dagoen eskualde genomiko bat zeliakiarekin asoziatuta dagoela baieztatu dugu gaixo-talde berri batean. Asoziazioaz gain, eskualdean kokaturiko MAGI2 eta RP4-587D13.2 geneen adierazpena gutxitua dago gaixoetan. Gainera, analisi funtzionalen arabera, alterazio hauek LH funtzionalitateari eragin diezaiokete.
In Celiac disease (CD), there is a loss of intestinal barrier function due to structural alterations in the Tight Junction (TJ) network, the most apical unions between epithelial cells. The association of TJ related gene variants points to an implication of this network in disease susceptibility. In the current study, we replicated the association of rs6962966, located in an intron of TJ-related MAGI2 gene and upstream of RP4-587D13.2 long non-coding RNA (lncRNA). We found that both, MAGI2 and RP4-587D13.2, are significantly downregulated in duodenal biopsies of active and treated CD patients. These findings show that the associated region is functionally altered in disease and suggest that RP4-58D13.2 and MAGI2 may be regulating the celiac disease related TJ alterations.
In Celiac disease (CD), there is a loss of intestinal barrier function due to structural alterations in the Tight Junction (TJ) network, the most apical unions between epithelial cells. The association of TJ related gene variants points to an implication of this network in disease susceptibility. In the current study, we replicated the association of rs6962966, located in an intron of TJ-related MAGI2 gene and upstream of RP4-587D13.2 long non-coding RNA (lncRNA). We found that both, MAGI2 and RP4-587D13.2, are significantly downregulated in duodenal biopsies of active and treated CD patients. These findings show that the associated region is functionally altered in disease and suggest that RP4-58D13.2 and MAGI2 may be regulating the celiac disease related TJ alterations.
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Eritasun zeliakoa, lotura hertsiak, MAGI2, RP4-587D13.2, Celiac disease, tight junctions, MAGI2, RP4-587D13.2