{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\n Long intergenic noncoding RNA 00511 (LINC00511) is increasingly recognized as a multifunctional regulator in cancer biology. In the majority of studies, LINC00511 is aberrantly up‐regulated in malignancies such as breast cancer, pancreatic ductal adenocarcinoma, tongue squamous cell carcinoma, ER‐negative breast cancer, glioma, hepatocellular carcinoma, lung cancer, T‐cell acute lymphoblastic leukemia, and colorectal cancer."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "1", "end_ref": "9"}]}, {"type": "t", "text": " Its overexpression frequently correlates with advanced tumor stage, increased proliferation, enhanced migration and invasion, epithelial‐mesenchymal transition (EMT), cancer stemness, and the emergence of chemo‐ or radio‐resistance."}]}, {"type": "t", "text": "\n \n "}, {"type": "p", "children": [{"type": "t", "text": "\n Mechanistically, LINC00511 exerts these oncogenic roles both at the post‐transcriptional and epigenetic levels. In many cancers LINC00511 functions as a competing endogenous RNA (ceRNA) by sponging multiple tumor‐suppressive microRNAs (e.g. miR‑185‑3p, miR‑765, miR‑29c, miR‑150, miR‑424, among others) to derepress target oncogenes—such as E2F1, VEGFA, LAMC2, CDK6, STAT3, and PKM2—that drive cell cycle progression and metastasis."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}, {"type": "fg_f", "ref": "3"}, {"type": "fg_fs", "start_ref": "5", "end_ref": "9"}]}, {"type": "t", "text": " In addition, LINC00511 can recruit epigenetic effectors—such as enhancer of zeste homolog 2 (EZH2) and LSD1—to repress tumor‐suppressor genes, further promoting oncogenic signaling. Its involvement in the regulation of vesicular trafficking, invadopodia biogenesis, and exosome secretion additionally underscores its role in facilitating tumor metastasis and the establishment of chemoresistant phenotypes.\n "}]}, {"type": "t", "text": "\n \n "}, {"type": "p", "children": [{"type": "t", "text": "\n Notably, while the majority of studies support an oncogenic function for LINC00511, one investigation in osteosarcoma revealed that its overexpression was associated with reduced proliferation, enhanced apoptosis, and improved patient outcomes, suggesting that the function of LINC00511 is context‐dependent."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "10"}]}, {"type": "t", "text": "\n "}]}, {"type": "t", "text": "\n \n "}, {"type": "p", "children": [{"type": "t", "text": "\n In summary, LINC00511 acts predominantly as an oncogene by promoting tumor growth, metastasis, EMT, cancer stemness, and drug resistance through a network of ceRNA interactions and epigenetic modulations. Its aberrant expression across multiple cancer types and its strong association with poor clinical outcomes make LINC00511 a promising prognostic biomarker and a potential therapeutic target.\n "}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Guanming Lu, Yueyong Li, Yanfei Ma, et al. 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