Journal
BMC GENOMICS
Volume 23, Issue 1, Pages -Publisher
BMC
DOI: 10.1186/s12864-022-08806-z
Keywords
N-6-Methyladenosine; Circular RNA; m(6)A-circRNAs; Oral squamous cell carcinoma; MeRIP-Seq
Funding
- National Natural Science Foundation of China [82002889, 82104631, 81902740]
- Tianjin Medical University Stomatological Hospital Foundation [2020YKY01]
- Hospital Project of Tianjin Medical University Cancer Institute and Hospital [B1908]
- Science & Technology Development Fund of the Tianjin Education Commission for Higher Education [2018KJ079]
- Tianjin Science and Technology Planning Project (Diversified investment fund projects) [21JCYBJC01150]
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This study preliminarily demonstrates the characteristics of m(6)A-circRNAs in oral squamous cell carcinoma, providing insights into the roles of m(6)A-circRNAs in this cancer.
Background Emerging transcriptome-wide high-throughput screenings reveal the landscape and functions of RNAs, such as circular RNAs (circRNAs), in human cancer. In addition, the post-transcriptional RNA internal modifications, especially N-6-methyladenosine (m(6)A), greatly enrich the variety of RNAs metabolism. However, the m(6)A modification on circRNAs has yet to be addressed. Results Here, we report an epitranscriptome-wide mapping of m(6)A-modified circRNAs (m(6)A-circRNA) in oral squamous cell carcinoma (OSCC). Utilizing the data of m(6)A methylated RNA immunoprecipitation sequencing (MeRIP-seq) and m(6)A-circRNAs microarray, we found that m(6)A-circRNAs exhibited particular modification styles in OSCC, which was independent of m(6)A-mRNA. Besides, m(6)A modification on circRNAs frequently occurred on the long exons in the front part of the coding sequence (CDS), which was distinct from m(6)A-mRNA that in 3'-UTR or stop codon. Conclusion In conclusion, our work preliminarily demonstrates the traits of m(6)A-circRNAs, which may bring enlighten for the roles of m(6)A-circRNAs in OSCC.
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