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  1. ...1 Title 1 Single-nucleus multiomic profiling of the aging mouse substantia nigra reveals 2 conserved gene alterations linked to Parkinson’s disease 3 Running title: Substantia nigra aging linked to Parkinson 4 Kangli Wang1, Weikun Xia1, Yingli Gu1, Songpeng Zu1, Qian Yang2, Maria Luisa Amaral1...
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  2. .... Corresponding author: seungjaevlee@kaist.ac.krAbstractAging is associated with changes in a variety of biological processes at the transcriptomic level, including gene expression. Two types of aging occur during a lifetime: chronological and physiological aging. However, dissecting the difference between...
  3. ...genes in old tissue, the genes for histone His2B and for histone His2A increase the most (Fig. 5C,D), suggesting a higher demand for these histones in the aging gut. In yeast, overexpression of core histone genes extends replicative life span, highlighting their potential role in promoting cellular...
  4. ...was very low (0.047).ScatTR correctly identifies samples with C9orf72 pathogenic repeat expansionsTo further validate the utility of ScatTR, we assessed its ability to estimate the size of a well-characterized pathogenic repeat expansion in C9orf72 gene, a biomarker for familial ALS and frontotemporal...
  5. ...aging. These include changes in DNA methylation, histone modifications, chromatin remodeling, and noncoding RNAs. Collectively, such alterations disrupt gene regulatory networks, leading to transcriptional dysregulation, loss of cellular homeostasis, and increased vulnerability to age-related diseases...
  6. ...of symptoms, and variation in age of onset, which makes identification of the molecular diagnosis challenging (Tankard et al. 2018).All individuals have a certain repeat length at each disease-associated STR locus; however, only once the size of a disease-associated repeat exceeds a certain repeat size...
  7. ...occurring in the early stages of the disease and to inform the development of therapeutics aimed at halting AD progression. Additionally, we presented the distribution of limbic-predominant age-related TDP-43 encephalopathy (LATE) stage, apolipoprotein E (APOE) gene carrier status, sex, and age at death...
  8. ...; Khristich and Mirkin 2020; Stevanovski et al. 2022). For instance, Fragile-X syndrome results from a GGC repeat expansion in the FMR1 gene, with affected individuals having up to 4000 copies compared to <50 in healthy individuals (Yu et al. 1991). Similarly, ALS is caused by an intronic hexa...
  9. ..., hinging on the precise binding of transcription factors (TFs) and cofactors to gene regulatory elements such as promoters and enhancers. Although it is relatively routine to profile -wide DNA binding landscapes of proteins, identifying the specific proteins that bind to, and regulate the transcription of...
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  10. ...These authors contributed equally to this review. Corresponding author: christopher.pearson@sickkids.caAbstractExpansions of gene-specific DNA tandem repeats (TRs), first described in 1991 as a disease-causing mutation in humans, are now known to cause >60 phenotypes, not just disease, and not only in humans...
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