During my doctoral work I investigated and identified the link between the intronic restless legs syndrome (RLS)-association signal within
MEIS1 and its functional correlate.
MEIS1 is a highly conserved homeobox developmental gene. Through screening for conservation six highly conserved non-coding regions (HCNRs) with RLS-associated variants were identified in the associated 32 Kb locus. I have demonstrated that all six HCNRs are functional by dual luciferase assays. An allele-specific difference in reporter assays was present for two of them, HCNR 617 and HCNR 631, implying relevance of the associated variants for the RLS phenotype. Electrophoretic mobility shift assay verified for both HCNRs the differential formation of DNA-protein complexes, depending on the allele. Finally, affinity chromatography combined with mass spectrometry identified upstream factors that bind allele-specific and differentially, such as Creb1, Ybx1 and Otx3. All of them colocalized with Meis1 expression in the developing mouse forebrain and probably regulate the expression of Meis1 protein. These results open new insights into the pathophysiology of RLS.
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During my doctoral work I investigated and identified the link between the intronic restless legs syndrome (RLS)-association signal within
MEIS1 and its functional correlate.
MEIS1 is a highly conserved homeobox developmental gene. Through screening for conservation six highly conserved non-coding regions (HCNRs) with RLS-associated variants were identified in the associated 32 Kb locus. I have demonstrated that all six HCNRs are functional by dual luciferase assays. An allele-specific differenc...
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