{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\nWhile the first two studies"}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": "primarily investigate the cellular machinery underlying acrosome biogenesis and nuclear envelope architecture during spermatogenesis—with a focus on proteins such as DPY19L2 and Sun5—the later studies expand the scope of RNA regulation in pathological contexts. In this broader framework, one microRNA—MIR1909 (often noted in its star form, miR-1909*)—emerges as functionally significant. In pediatric dysembryoplastic neuroepithelial tumors, miR-1909* was identified as being up-regulated, suggesting its role as a putative oncogenic molecule. Its differential expression underscores a potential application as a diagnostic biomarker, where alterations in its levels may help distinguish tumor from normal brain tissue."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "3"}]}, {"type": "t", "text": "\n \nIn a complementary line of inquiry, research focused on RNA‐based therapeutic approaches has highlighted the natural ability of certain microRNAs to interact with key regulatory mRNAs. Specifically, miR-1909, alongside miR-1915, was shown to bind with high net free energy to regions within the Notch-1 mRNA. This binding is indicative of a natural feedback mechanism that may attenuate Notch-1 translation—a pathway known to influence the epithelial-to-mesenchymal transition and cancer stem cell activation. Such interactions suggest that miR-1909 could be harnessed as a candidate effector RNA (eRNA) to modulate Notch-1 signaling in cancer, potentially serving both as a therapeutic agent and as a means to overcome resistance to conventional drugs."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "4"}]}, {"type": "t", "text": "\n"}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Virginie Pierre, Guillaume Martinez, Charles Coutton, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Absence of Dpy19l2, a new inner nuclear membrane protein, causes globozoospermia in mice by preventing the anchoring of the acrosome to the nucleus."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Development (2012)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1242/dev.077982"}], "href": "https://doi.org/10.1242/dev.077982"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "22764053"}], "href": "https://pubmed.ncbi.nlm.nih.gov/22764053"}]}, {"type": "r", "ref": 2, "children": [{"type": "t", "text": "Sandra Yassine, Jessica Escoffier, Roland Abi Nahed, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Dynamics of Sun5 localization during spermatogenesis in wild type and Dpy19l2 knock-out mice indicates that Sun5 is not involved in acrosome attachment to the nuclear envelope."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "PLoS One (2015)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1371/journal.pone.0118698"}], "href": "https://doi.org/10.1371/journal.pone.0118698"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "25775128"}], "href": "https://pubmed.ncbi.nlm.nih.gov/25775128"}]}, {"type": "r", "ref": 3, "children": [{"type": "t", "text": "M Braoudaki, G I Lambrou, S A Papadodima, et al. "}, {"type": "b", "children": [{"type": "t", "text": "MicroRNA expression profiles in pediatric dysembryoplastic neuroepithelial tumors."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Med Oncol (2016)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1007/s12032-015-0719-3"}], "href": "https://doi.org/10.1007/s12032-015-0719-3"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "26698155"}], "href": "https://pubmed.ncbi.nlm.nih.gov/26698155"}]}, {"type": "r", "ref": 4, "children": [{"type": "t", "text": "Yufeng Li, Takashi Mine, Constantin G Ioannides "}, {"type": "b", "children": [{"type": "t", "text": "Short GC-rich RNA similar to miR 1909 and 1915 folds in silico with the 5'-UTR and ORF of Notch and responders: potential for the elimination of cancer stem cells."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Oncol Rep (2010)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.3892/or_00001004"}], "href": "https://doi.org/10.3892/or_00001004"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "21042738"}], "href": "https://pubmed.ncbi.nlm.nih.gov/21042738"}]}]}]}