{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\nZNF667‐AS1 is a long non‑coding RNA that has emerged as a crucial tumor suppressor in multiple malignancies. In esophageal squamous cell carcinoma and cervical cancer, for example, its expression is frequently downregulated by promoter hypermethylation. Restoration of ZNF667‑AS1 has been shown to inhibit cell viability, migration, and invasion, while its loss is associated with the immortalization of human epithelial cells, thereby contributing to early carcinogenic events."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "1", "end_ref": "3"}]}, {"type": "t", "text": ""}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nIn colorectal cancer and glioma, reduced ZNF667‑AS1 expression correlates with poor prognosis and accelerated tumor progression. In these malignancies, its overexpression leads to diminished proliferation, migration, and invasion. Mechanistically, ZNF667‑AS1 modulates key signaling pathways, including those involving ANK2 and JAK2, thereby suppressing tumor aggressiveness."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "4"}]}, {"type": "t", "text": ""}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nBeyond cancer, ZNF667‑AS1 has also been implicated in non‑malignant disorders. In rheumatoid arthritis, its dysregulation is under investigation for its possible contributions to synovial inflammation, and similar expression changes have been noted in the context of myocardial infarction, suggesting that this lncRNA may play roles in inflammatory responses and tissue remodeling."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "6"}]}, {"type": "t", "text": ""}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nFurther evidence from studies in uveal melanoma, oral squamous cell carcinoma, ovarian cancer, and additional esophageal tumors supports a broad tumor‐suppressive function for ZNF667‑AS1. In these contexts, ZNF667‑AS1 not only recruits epigenetic modifiers such as TET1 and UTX to activate tumor‑suppressor genes like ZNF667 and E‑cadherin, but it also acts as a molecular sponge for oncogenic microRNAs (e.g., miR‑18b‑5p and miR‑523‑3p), thereby modulating targets like RASA1 and KIF5C. Moreover, in hepatocellular and breast carcinomas, ZNF667‑AS1 downregulation is linked to the upregulation of oncogenic pathways (for instance, NOTCH1 signaling), which further underscores its importance in maintaining cellular mortality and preventing malignant transformation."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "8", "end_ref": "14"}]}, {"type": "t", "text": ""}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Zhiming Dong, Shengmian Li, Xuan Wu, et al. 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