1c:I[419806,["/_next/static/chunks/bb923814e1f4d2e9.js","/_next/static/chunks/dd3ee9f5b7716ca6.js","/_next/static/chunks/4204a0ae82542ca8.js","/_next/static/chunks/30036bedc5269936.js","/_next/static/chunks/6e1aa89a642f40be.js","/_next/static/chunks/cd5e572bc3e4eb92.js","/_next/static/chunks/8ffd0b71567920d8.js","/_next/static/chunks/67ea6dfd21f16c5f.js","/_next/static/chunks/24eb4379f68013fd.js","/_next/static/chunks/b8cd775ffdf935bd.js","/_next/static/chunks/983103cd9eb7b428.js","/_next/static/chunks/d4ac9dcf27f6ff52.js","/_next/static/chunks/294b9525248c8e5f.js"],"default"] 1d:T532,N⁶-Methyladenosine (m⁶A) is the most common internal modification of eukaryotic messenger RNA (mRNA) that occurred on the N⁶ nitrogen of adenosine. However, the roles of m⁶A in oral squamous cell carcinoma (OSCC) are still elusive. Here, we investigate the function and mechanism of methyltransferase-like 3 (METTL3) in OSCC tumorigenesis. Clinically, METTL3 was significantly upregulated in tissue samples and correlated with the poor prognosis of OSCC patients. Functionally, loss and gain studies illustrated that METTL3 promoted the proliferation, invasion, and migration of OSCC cells in vitro, and METTL3 knockdown inhibited tumor growth in vivo. Mechanistically, methylated RNA immunoprecipitation sequencing (MeRIP-seq) illustrated that METTL3 targeted the 3' UTR (near to stop codon) of the c-Myc transcript to install the m⁶A modification, thereby enhancing its stability. Furthermore, results revealed that YTH N⁶-methyladenosine RNA binding protein 1 (YTH domain family, member 1 [YTHDF1]) mediated the m⁶A-increased stability of c-Myc mRNA catalyzed by METTL3. In conclusion, our findings herein identify that METTL3 accelerates the c-Myc stability via YTHDF1-mediated m⁶A modification, thereby giving rise to OSCC tumorigenesis.1e:T41e,Glucose transporters, such as GLUT-1, mediate the important mechanisms involved in cellular glucose influx, allowing cells to proliferate and survive. The significance of GLUT-1 expression in oral epithelial dysplasia (OED) and oral squamous cell carcinoma (OSCC) has been less explored, and no study has investigated it in relation to verrucous carcinoma (VC). We evaluated 30 cases each of OED, OSCC, and VC, graded further on the basis of their differentiation, immunohistochemically for GLUT-1 expression, along with 10 specimens of normal oral mucosa (NOM) as controls. In OSCC, GLUT-1 expression increased with the degree of dysplasia and increasing grade (P < 0.001). The expression in VC was predominantly membranous and intense, resembling well differentiated OSCC. This increase of GLUT-1 expression in OSCC along with the degree of dysplasia and the histologic grade reflects the expanding glycolytic response to hypoxia. This is the first study to have revealed prominent GLUT-1 expression in VC, highlighting its inherent metabolic capacity.

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