{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\nRecent studies highlight the importance of lysine methylation as a regulatory mechanism shaping cell‐intrinsic defense and tissue homeostasis. In one study, a lysine methyltransferase (NSD3) was shown to directly bind and monomethylate IRF3 at lysine 366, an event that is critical for sustaining IRF3 phosphorylation, thereby bolstering type I interferon production and the antiviral innate immune response."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nSimilarly, investigations in renal and neural contexts reveal that epigenetic modifiers can fine‐tune gene expression programs with significant physiological consequences. In podocytes, the long form of Wolf–Hirschhorn syndrome candidate 1-like 1 (WHSC1L1-L) acts as a histone methyltransferase that represses the nephrin gene by diminishing H3K4 trimethylation at its promoter. Loss of WHSC1L1-L function corresponded to enhanced nephrin transcription, an event with implications for the integrity of the glomerular filtration barrier."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "2"}]}, {"type": "t", "text": " In another context, following herpes simplex virus 1 infection, upregulation of WHSC1L1 was linked to epigenetic suppression of vacuole membrane protein 1 (VMP1) through H3K36me2-guided recruitment of DNMT3A. This suppression impaired mitophagy in microglia, thereby exacerbating oxidative stress and neuroinflammatory damage."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "3"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nA broader perspective on histone H3 lysine 36 (H3K36) methylation underscores its pivotal role in orchestrating reliable gene expression patterns during development and disease."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "4"}]}, {"type": "t", "text": " These studies collectively reflect a theme where finely tuned methylation dynamics are crucial for modulating transcriptional activity in response to diverse signals. Although none of these reports address PRADX directly, by extrapolating from these mechanistic insights it is plausible that PRADX functions as an epigenetic regulator operating in a similar capacity. In this inferred role, PRADX might participate in recruiting or modulating histone methyltransferase complexes to establish context-specific methylation landscapes, thereby impacting critical biological processes such as antiviral responses, podocyte differentiation, and neuroinflammation.\n"}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Chunmei Wang, Qinlan Wang, Xiaoqing Xu, et al. "}, {"type": "b", "children": [{"type": "t", "text": "The methyltransferase NSD3 promotes antiviral innate immunity via direct lysine methylation of IRF3."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "J Exp Med (2017)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1084/jem.20170856"}], "href": "https://doi.org/10.1084/jem.20170856"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "29101251"}], "href": "https://pubmed.ncbi.nlm.nih.gov/29101251"}]}, {"type": "r", "ref": 2, "children": [{"type": "t", "text": "Yugo Ito, Kan Katayama, Yukino Nishibori, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Wolf-Hirschhorn syndrome candidate 1-like 1 epigenetically regulates nephrin gene expression."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Am J Physiol Renal Physiol (2017)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1152/ajprenal.00305.2016"}], "href": "https://doi.org/10.1152/ajprenal.00305.2016"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "28228401"}], "href": "https://pubmed.ncbi.nlm.nih.gov/28228401"}]}, {"type": "r", "ref": 3, "children": [{"type": "t", "text": "Yan Yao, Juxian Gu, Meng Li, et al. "}, {"type": "b", "children": [{"type": "t", "text": "WHSC1L1-mediated epigenetic downregulation of VMP1 participates in herpes simplex virus 1 infection-induced mitophagy impairment and neuroinflammation."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Mol Immunol (2023)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1016/j.molimm.2023.09.012"}], "href": "https://doi.org/10.1016/j.molimm.2023.09.012"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "37748280"}], "href": "https://pubmed.ncbi.nlm.nih.gov/37748280"}]}, {"type": "r", "ref": 4, "children": [{"type": "t", "text": "Gerry A Shipman, Reinnier Padilla, Cynthia Horth, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Systematic perturbations of SETD2, NSD1, NSD2, NSD3, and ASH1L reveal their distinct contributions to H3K36 methylation."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Genome Biol (2024)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1186/s13059-024-03415-3"}], "href": "https://doi.org/10.1186/s13059-024-03415-3"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "39390582"}], "href": "https://pubmed.ncbi.nlm.nih.gov/39390582"}]}]}]}