The () gene encodes a protein required for thyroid hormone synthesis and iodine storage. Deleterious mutations produce congenital hypothyroidism (CH) often presenting with undetectable serum TG. Alu elements, common throughout the human genome, have a poly(dA) region in the 3' end of the strand. Herein two of four siblings of a consanguineous Sudanese family with CH, goiter, high initial serum thyrotropin, and undetectable TG were found to have a novel frameshift insertion of an Alu element within an exon of the gene: c.7909ins p.Y3637Ffs. This report demonstrates a novel Alu element insertion within causing CH.
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http://dx.doi.org/10.1089/thy.2019.0636 | DOI Listing |
J Diabetes Investig
January 2025
Department of Medical Sciences, Shahid Beheshti University, Tehran, Iran.
Aims: This study aimed to delineate the effect of hyperglycemia on the Alu/LINE-1 hypomethylation and in ERK1/2 genes expression in type 2 diabetes with and without cataract.
Methods: This study included 58 diabetic patients without cataracts, 50 diabetic patients with cataracts, and 36 healthy controls. After DNA extraction and bisulfite treatment, LINE-1 and Alu methylation levels were assessed using Real-time MSP.
Nat Commun
January 2025
Technion-Israel Institute of Technology, Faculty of Biology, Emerson building, Haifa, Israel.
Long non-coding RNAs (lncRNAs) are pivotal regulators of cellular processes. Here we reveal an interaction between the lncRNA NORAD, noted for its role in DNA stability, and the immune related transcription factor STAT3 in embryonic and differentiated human cells. Results from NORAD knockdown experiments implicate NORAD in facilitating STAT3 nuclear localization and suppressing antiviral gene activation.
View Article and Find Full Text PDFNat Commun
January 2025
Division of Genome Analysis Platform Development, National Cancer Center Research Institute, Tokyo, Japan.
Genomic variants causing abnormal splicing play important roles in genetic disorders and cancer development. Among them, variants that cause the formation of novel splice-sites (splice-site creating variants, SSCVs) are particularly difficult to identify and often overlooked in genomic studies. Additionally, these SSCVs are frequently considered promising candidates for treatment with splice-switching antisense oligonucleotides (ASOs).
View Article and Find Full Text PDFPLoS One
January 2025
Faculty of Biology, VNU University of Science, Vietnam National University, Hanoi, Vietnam.
The autonomous and active Long-Interspersed Element-1 (LINE-1, L1) and the non-autonomous Alu retrotransposon elements, contributing to 30% of the human genome, are the most abundant repeated sequences. With more than 90% of their sequences being methylated in normal cells, these elements undeniably contribute to the global DNA methylation level and constitute a major part of circulating-cell-free DNA (cfDNA). So far, the hypomethylation status of LINE-1 and Alu in cellular and extracellular DNA has long been considered a prevailing hallmark of ageing-related diseases and cancer.
View Article and Find Full Text PDFMicroorganisms
November 2024
Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA.
Papillary thyroid cancer (PTC) is one of the fastest-growing cancers worldwide, lacking established causal factors or validated early diagnostics. Human endogenous retroviruses (HERVs), comprising 8% of human genomes, have potential as PTC biomarkers due to their comparably high baseline expression in healthy thyroid tissues, indicating homeostatic roles. However, HERV regions are often overlooked in genome-wide association studies because of their highly repetitive nature, low sequence coverage, and decreased sequencing quality.
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