{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\n Long non‑coding RNAs (lncRNAs) have emerged as key regulatory molecules in cancer by acting as competing endogenous RNAs (ceRNAs) that modulate microRNA (miRNA) availability and, consequently, mRNA expression. Although neither of the presented studies explicitly focused on GRM5‑AS1, the analyses of ceRNA networks in papillary renal cell carcinoma (PRCC) and glioblastoma multiforme (GBM) provide a framework for understanding how lncRNAs—including GRM5‑AS1, by analogy—may function in tumorigenesis.\n "}]}, {"type": "t", "text": "\n "}, {"type": "p", "children": [{"type": "t", "text": "\n In the study on PRCC, differential expression analysis combined with network construction identified multiple lncRNAs (for example, MEG3 and PWRN1) that engage in ceRNA interactions with miRNAs such as miR‑508, miR‑21, and miR‑519, thereby indirectly regulating mRNAs involved in cancer progression."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": " In a similar manner, the GBM study constructed a prognostic ceRNA network and risk prediction model based on dysregulated lncRNAs, underscoring the importance of these RNAs as potential biomarkers and therapeutic targets."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "2"}]}, {"type": "t", "text": "\n "}]}, {"type": "t", "text": "\n "}, {"type": "p", "children": [{"type": "t", "text": "\n Extrapolating from these findings, GRM5‑AS1 is likely to function as a ceRNA that modulates gene expression through competitive binding with miRNAs. By sequestering specific miRNAs, GRM5‑AS1 could influence the stability or translation of target mRNAs that are crucial for tumor growth and prognosis. In essence, even though GRM5‑AS1 was not directly highlighted in these abstracts, its presumed involvement in ceRNA networks parallels the roles defined for other lncRNAs in PRCC and GBM, suggesting that it may hold promise as a biomarker or therapeutic target in cancer.\n "}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Qing Luo, Meng Cui, Qinfu Deng, et al. "}, {"type": "b", "children": [{"type": "t", "text": "Comprehensive analysis of differentially expressed profiles and reconstruction of a competing endogenous RNA network in papillary renal cell carcinoma."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Mol Med Rep (2019)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.3892/mmr.2019.10138"}], "href": "https://doi.org/10.3892/mmr.2019.10138"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "30957192"}], "href": "https://pubmed.ncbi.nlm.nih.gov/30957192"}]}, {"type": "r", "ref": 2, "children": [{"type": "t", "text": "Youwei Li, Dongsheng Guo "}, {"type": "b", "children": [{"type": "t", "text": "Identification of Novel lncRNA Markers in Glioblastoma Multiforme and Their Clinical Significance: A Study Based on Multiple Sequencing Data."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Onco Targets Ther (2020)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.2147/OTT.S235951"}], "href": "https://doi.org/10.2147/OTT.S235951"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "32099410"}], "href": "https://pubmed.ncbi.nlm.nih.gov/32099410"}]}]}]}