{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,25]],"date-time":"2026-08-25T19:29:34Z","timestamp":1787686174114,"version":"build-2784847793"},"reference-count":68,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2022,1,12]],"date-time":"2022-01-12T00:00:00Z","timestamp":1641945600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100012476","name":"Fundamental Research Funds for Central Universities of the Central South University","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100012476","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100015951","name":"Qinghai Provincial Key Laboratory of Tibetan Medicine Research","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100015951","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Immunol."],"abstract":"<jats:p>N6-Adenosine methylation, yielding N6-methyladenosine (m<jats:sup>6<\/jats:sup>A), is a reversible epigenetic modification found in messenger RNAs and long non-coding RNAs (lncRNAs), which affects the fate of modified RNA molecules and is essential for the development and differentiation of immune cells in the tumor microenvironment (TME). Osteosarcoma (OS) is the most common primary bone tumor in children and adolescents, and is characterized by high mortality. Currently, the possible role of m<jats:sup>6<\/jats:sup>A modifications in the prognosis of OS is unclear. In the present study, we investigated the correlation between m<jats:sup>6<\/jats:sup>A-related lncRNA expression and the clinical outcomes of OS patients <jats:italic>via<\/jats:italic> a comprehensive analysis. Clinical and workflow-type data were obtained from the Genotype-Tissue Expression Program and The Cancer Genome Atlas. We examined the relationship between m<jats:sup>6<\/jats:sup>A modifications and lncRNA expression, conducted Kyoto Encyclopedia of Genes analysis and also gene set enrichment analysis (GSEA), implemented survival analysis to investigate the association of clinical survival data with the expression of m<jats:sup>6<\/jats:sup>A-related lncRNAs, and utilized Lasso regression to model the prognosis of OS. Furthermore, we performed immune correlation analysis and TME differential analysis to investigate the infiltration levels of immune cells and their relationship with clinical prognosis. LncRNA expression and m<jats:sup>6<\/jats:sup>A levels were closely associated in co-expression analysis. The expression of m<jats:sup>6<\/jats:sup>A-related lncRNAs was quite low in tumor tissues; this appeared to be a predicting factor of OS in a prognostic model, independent of other clinical features. The NOD-like receptor signaling pathway was the most significantly enriched pathway in GSEA. In tumor tissues, <jats:italic>SPAG4<\/jats:italic> was overexpressed while <jats:italic>ZBTB32<\/jats:italic> and <jats:italic>DEPTOR<\/jats:italic> were downregulated. Tissues in cluster 2 were highly infiltrated by plasma cells. Cluster 2 presented higher ESTIMATE scores and stromal scores, showing a lower tumor cell purity in the TME. In conclusion, m<jats:sup>6<\/jats:sup>A-related lncRNA expression is strongly associated with the occurrence and development of OS, and can be used to as a prognostic factor of OS. Moreover, m<jats:sup>6<\/jats:sup>A-related lncRNAs and infiltrating immune cells in the TME could serve as new therapeutic targets and prognostic biomarkers for OS.<\/jats:p>","DOI":"10.3389\/fimmu.2021.806189","type":"journal-article","created":{"date-parts":[[2023,1,25]],"date-time":"2023-01-25T16:14:41Z","timestamp":1674663281000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":19,"title":["N6-Methyladenosine-Related LncRNAs Are Potential Remodeling Indicators in the Tumor Microenvironment and Prognostic Markers in 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