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논문 기본 정보

자료유형
학술저널
저자정보
Qian Kun (Shangrao People’s Hospital China) Xu Wei (The Second Affiliated Hospital of Nanchang University China) Xia Xiaoyao (Shangrao People’s Hospital China) Ding Jinhuo (Shangrao People’s Hospital China)
저널정보
한국유전학회 Genes & Genomics Genes & Genomics Vol.44 No.12
발행연도
2022.12
수록면
1,519 - 1,530 (12page)
DOI
10.1007/s13258-022-01301-5

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Background Methyltransferase-like 3 (METTL3) is an RNA N6-methyladenosine (m6A) methyltransferase, which plays a critical role in micorRNA (miRNAs) processing and maturation, but it is still unclear whether METTL3 regulated miRNAs participates in the regulation of cancer aggressiveness in gastrointestinal stromal tumors (GISTs). Objectives This study was designed to investigate this issue, and uncover the potential underlying mechanisms. Methods the expression of METTL3 in GISTs tissues and cell lines were determined by RT-qPCR and Western blot. Cell proliferation and migration were assessed by colony formation, CCK-8 and Transwell. The mRNA expression of all proteins was detected by RT-qPCR, and tumor xenograft study was applied to confirm the effect of METTL3 on GISTs development in vivo. Results In our study, we showed that METTL3 was significantly upregulated in GISTs tissues and cell lines. Functional experiments demonstrated that overexpression of METTL3 promoted GISTs cell malignant biological behavior and tumor growth in vitro and in vivo, and conversely, silencing of METTL3 had opposite effects and suppressed GISTs progression. Further mechanistical experiments verified that METTL3 promoted the maturation of miR-25-3p in an m6A-dependent manner. Similar to METTL3, miR-25-3p was also validated as an oncogene to promote cancer development in GISTs. Finally, our rescuing experiments hinted that silencing of miR-25-3p abrogated the tumor-initiating effects of METTL3 overexpression on GISTs. Conclusion Collectively, those results indicated that METTL3 played an oncogenic role in GISTs through positively modulating the miR-25-3p in an m6A-dependent manner, and we firstly discussed how the METTL3/m6A/miR-25-3p axis affected GISTs development.

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