The authors examined the chromosomes of 20 patients who underwent thyroid investigations. Leucocyte cultures from peripheral blood were studied immediately before the indtroduction of 131I, and again after 48 hours. The results indicate that a total body dose of 0.05 rad increases chromatid damage as well as increasing the incidence of labile chromosome changes.
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| http://dx.doi.org/10.1055/s-0029-1231205 | DOI Listing |
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[Gene editing is changing the treatment of hereditary diseases].
Lakartidningen
January 2025
docent, verksamhetschef, Karolinska centrum för cellterapi (KCC), Karolinska universitetssjukhuset, Stockholm; Karolins-ka ATMP-centrum; institutionen för laboratorie-medicin, Karolinska institutet.
Gene editing is a novel technology within gene therapy, which changes sequences in chromosomal DNA with precision. Even if there are alternative strategies, the Nobel Prize-winning CRISPR/Cas technology has become the dominating principle. During recent years base editing and prime editing, permitting editing without DNA double-strand breaks, have been developed.
View Article and Find Full Text PDFEpigenetic state and gene expression remain stable after CRISPR/Cas-mediated chromosomal inversions.
New Phytol
January 2025
Leibniz Institute of Plant Genetics and Crop Plant Research Gatersleben, Corrensstrasse 3, 06466, Seeland, Germany.
The epigenetic state of chromatin, gene activity and chromosomal positions are interrelated in plants. In Arabidopsis thaliana, chromosome arms are DNA-hypomethylated and enriched with the euchromatin-specific histone mark H3K4me3, while pericentromeric regions are DNA-hypermethylated and enriched with the heterochromatin-specific mark H3K9me2. We aimed to investigate how the chromosomal location affects epigenetic stability and gene expression by chromosome engineering.
View Article and Find Full Text PDFA chromosome-level, haplotype-resolved genome assembly and annotation for the Eurasian minnow (Leuciscidae: Phoxinus phoxinus) provide evidence of haplotype diversity.
Gigascience
January 2025
Leibniz Institute for the Analysis of Biodiversity Change, Museum Koenig Bonn, 53113 Bonn, Germany.
Background: In this study, we present an in-depth analysis of the Eurasian minnow (Phoxinus phoxinus) genome, highlighting its genetic diversity, structural variations, and evolutionary adaptations. We generated an annotated haplotype-phased, chromosome-level genome assembly (2n = 50) by integrating high-fidelity (HiFi) long reads and chromosome conformation capture data (Hi-C).
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Transcription near arrested DNA replication forks triggers ribosomal DNA copy number changes.
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Laboratory of Genome Regeneration, Institute for Quantitative Biosciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo113-0032, Japan.
Article Synopsis
- Sir2 is a histone deacetylase that helps maintain the stability of ribosomal RNA genes in budding yeast by preventing DNA breaks from leading to changes in rDNA copy number.
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Sexual Dimorphism in the Downregulation of Extracellular Matrix Genes Contribute to Aortic Structural Stiffness in Female Mice.
Am J Physiol Heart Circ Physiol
January 2025
Vascular Biology Center and Department of Medicine, Medical College of Georgia at Augusta University, Augusta, GA USA.
The contribution of sex hormones to cardiovascular disease, including arterial stiffness, is established; however, the role of sex chromosome interaction with sex hormones, particularly in women, is lagging. Arterial structural stiffness depends on the intrinsic properties and transmural wall geometry that comprise a network of cells and extracellular matrix (ECM) proteins expressed in a sex-dependent manner. In this study, we used four-core genotype (FCG) mice to determine the relative contribution of sex hormones versus sex chromosomes or their interaction with arterial structural stiffness.
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