id author title date pages extension mime words sentences flesch summary cache txt cord-278081-tk7vn1v1 Brooks, Wesley H. Viral Impact in Autoimmune Diseases: Expanding the “X Chromosome–Nucleolus Nexus” Hypothesis 2017-11-28 .txt text/plain 9823 457 42 Here is presented new details to the hypothesis, explaining how the disrupted chromatin can lead to subsequent disruption of the nucleolus, even nucleolar fragmentation, which results in ineffective nucleolar functioning, misfolded RNAs, misassembled or incompletely assembled ribonucleoprotein (RNP) complexes, and stabilization of nucleolar components in autoantigenic conformations. For now there is no direct connection between viruses and the "X chromosome-nucleolus nexus" hypothesis to the increased risk of cancers among autoimmune disease patients but we can consider the induction by viruses of increased polyamine levels and the possible reactivation of X-linked polyamine genes as means by which competition for the cellular methyl donor, SAM, could reduce DNA methylation and open oncogenes for overexpression in proliferation competent cells. A disrupted Barr body could generate an abundance of polyamines and Alu RNA from X-linked genes and elements that further stress and damage the nucleolus, making it very inefficient in its functions, even fragmenting it and possibly leading to cell death. ./cache/cord-278081-tk7vn1v1.txt ./txt/cord-278081-tk7vn1v1.txt