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Landscape of N 6 -Methyladenosine Modification Patterns in Human Ameloblastoma.
Objective: To comprehensively analyze the global N6 -methyladenosine (m6 A) modification pattern in ameloblastoma.
Methods: m6 A peaks in ameloblastoma and normal oral tissues were detected by MeRIP-seq. Differentially methylated m6 A sites within messenger RNAs (mRNAs), long no-coding RNA (lncRNAs) and circular RNA (circRNAs) were identified, followed by functional enrichment analysis. By comprehensively analyzing MeRIP-seq and RNA-seq data, differentially expressed mRNAs, lncRNAs and circRNAs containing differentially methylated sites were identified. RNA binding proteins (RBPs) were then identified for differentially methylated m6 A sites.
Results: In total, 3,673 differentially methylated m6 A sites within coding genes were detected, of which 16.2% (704/3,673) were significantly upmethylated sites in ameloblastoma compared to normal oral tissues. Furthermore, 4,975 differentially methylated m6 A sites within lncRNAs were identified, of which 29.4% (1,465/4,975) were upmethylated sites in ameloblastoma. We also found 364 differentially methylated m6 A sites within circRNAs, of which 22.5% (82/364) were upmethylated sites in ameloblastoma. Differentially methylated m6 A was most often harbored in the CDS (54.10%), followed by 5'UTR (21.71%). Functional enrichment analysis revealed that m6 A modification could be involved in the development of ameloblastoma by organism developmental processes. A total of 158 RBPs within differentially methylated m6 A sites were identified, which were significantly involved in mRNA metabolic process, mRNA processing, RNA processing, RNA splicing and RNA transport.
Conclusion: Our findings for the first time provide m6 A landscape of human ameloblastoma, which expand the understanding of m6 A modifications and uncover regulation of lncRNAs and circRNAs through m6 A modification in ameloblastoma.
Methods: m6 A peaks in ameloblastoma and normal oral tissues were detected by MeRIP-seq. Differentially methylated m6 A sites within messenger RNAs (mRNAs), long no-coding RNA (lncRNAs) and circular RNA (circRNAs) were identified, followed by functional enrichment analysis. By comprehensively analyzing MeRIP-seq and RNA-seq data, differentially expressed mRNAs, lncRNAs and circRNAs containing differentially methylated sites were identified. RNA binding proteins (RBPs) were then identified for differentially methylated m6 A sites.
Results: In total, 3,673 differentially methylated m6 A sites within coding genes were detected, of which 16.2% (704/3,673) were significantly upmethylated sites in ameloblastoma compared to normal oral tissues. Furthermore, 4,975 differentially methylated m6 A sites within lncRNAs were identified, of which 29.4% (1,465/4,975) were upmethylated sites in ameloblastoma. We also found 364 differentially methylated m6 A sites within circRNAs, of which 22.5% (82/364) were upmethylated sites in ameloblastoma. Differentially methylated m6 A was most often harbored in the CDS (54.10%), followed by 5'UTR (21.71%). Functional enrichment analysis revealed that m6 A modification could be involved in the development of ameloblastoma by organism developmental processes. A total of 158 RBPs within differentially methylated m6 A sites were identified, which were significantly involved in mRNA metabolic process, mRNA processing, RNA processing, RNA splicing and RNA transport.
Conclusion: Our findings for the first time provide m6 A landscape of human ameloblastoma, which expand the understanding of m6 A modifications and uncover regulation of lncRNAs and circRNAs through m6 A modification in ameloblastoma.
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