{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\nRNase H2 plays a crucial role in maintaining genome integrity by removing misincorporated ribonucleotides and processing RNA/DNA hybrids, thereby preventing the accumulation of self-nucleic acid species that can trigger inflammatory and immune responses. Mutations in any of the RNase H2 subunits perturb these functions, leading to chronic interferon signaling and DNA damage, as exemplified in Aicardi‐Goutières syndrome and other autoimmune conditions. Detailed structural and biochemical analyses have revealed that alterations in the catalytic activity—as seen with mutations such as RNase H2A G37S—undermine both nucleic acid processing and protein interactions critical for proper enzyme function."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "1", "end_ref": "5"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nIn a distinct line of investigation aimed at understanding responses to weight-loss interventions, miR-548q (also referred to as MIR548Q) was identified in white blood cells as being significantly overexpressed in individuals who respond well to dietary reduction. Functional assays demonstrated that increased levels of miR-548q contribute to the downregulation of glycogen synthase kinase 3 beta (GSK3B) via binding to its 3′-untranslated region. This regulatory interaction suggests that miR-548q not only serves as a biomarker for weight-loss efficacy but may also modulate proinflammatory signaling cascades."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "6"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nFurthermore, studies exploring the molecular underpinnings of cellular senescence have underscored how deficiencies in nucleic acid repair mechanisms—such as those orchestrated by RNase H2—can lead to the accumulation of aberrant nucleotide species that trigger inflammatory responses via the senescence-associated secretory phenotype (SASP). This intersection between impaired nucleic acid metabolism, chronic inflammation, and metabolic regulation raises the possibility that miR-548q’s modulation of GSK3B could influence similar inflammatory and stress-related pathways, thereby linking metabolic outcomes with the broader context of DNA repair and immune activation."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "7"}]}, {"type": "t", "text": "\n"}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Vladislav Pokatayev, Naushaba Hasin, Hyongi Chon, et al. 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"}, {"type": "b", "children": [{"type": "t", "text": "The structure of the mammalian RNase H2 complex provides insight into RNA.NA hybrid processing to prevent immune dysfunction."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "J Biol Chem (2010)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1074/jbc.M109.059048"}], "href": "https://doi.org/10.1074/jbc.M109.059048"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "19923215"}], "href": "https://pubmed.ncbi.nlm.nih.gov/19923215"}]}, {"type": "r", "ref": 3, "children": [{"type": "t", "text": "Ryo Uehara, Susana M Cerritelli, Naushaba Hasin, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Two RNase H2 Mutants with Differential rNMP Processing Activity Reveal a Threshold of Ribonucleotide Tolerance for Embryonic Development."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Cell Rep (2018)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1016/j.celrep.2018.10.019"}], "href": "https://doi.org/10.1016/j.celrep.2018.10.019"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "30380406"}], "href": "https://pubmed.ncbi.nlm.nih.gov/30380406"}]}, {"type": "r", "ref": 4, "children": [{"type": "t", "text": "Stephanie R Coffin, Thomas Hollis, Fred W Perrino "}, {"type": "b", "children": [{"type": "t", "text": "Functional consequences of the RNase H2A subunit mutations that cause Aicardi-Goutieres syndrome."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "J Biol Chem (2011)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1074/jbc.M111.228833"}], "href": "https://doi.org/10.1074/jbc.M111.228833"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "21454563"}], "href": "https://pubmed.ncbi.nlm.nih.gov/21454563"}]}, {"type": "r", "ref": 5, "children": [{"type": "t", "text": "Björn Rabe "}, {"type": "b", "children": [{"type": "t", "text": "Aicardi-Goutières syndrome: clues from the RNase H2 knock-out mouse."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "J Mol Med (Berl) (2013)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1007/s00109-013-1061-x"}], "href": "https://doi.org/10.1007/s00109-013-1061-x"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "23744109"}], "href": "https://pubmed.ncbi.nlm.nih.gov/23744109"}]}, {"type": "r", "ref": 6, "children": [{"type": "t", "text": "Marcos Garcia-Lacarte, Maria L Mansego, M Angeles Zulet, et al. 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