LncRNA LINC00470 promotes the degradation of PTEN mRNA to facilitate malignant behavior in gastric cancer cells |
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Institution: | 1. Breast Surgery Medicine, Zhong-Shan Hospital Affiliated with Fudan University, Shanghai 200032, China;2. Internal Medicine-Oncology, Zhong-Shan Hospital Affiliated with Fudan University, Shanghai 200032, China;3. Department of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China |
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Abstract: | Gastric cancer (GC) is the fourth most frequent malignancy worldwide. Recently, long noncoding RNA (lncRNA) LINC00470 has been demonstrated to play an oncogenic role in human cancer. However, the clinical significance and functional role of LINC00470 in the progression of GC is largely unknown. In this study, our findings showed that LINC00470 was significantly upregulated in GC tissues and cell lines, and correlated with distant metastasis, TNM stage and poor prognosis. Overexpression and knockdown experiments revealed its oncogenic functions on GC cell proliferation, migration and invasion. Mechanistically, LINC00470 associated with PTEN mRNA and suppressed its stability through interaction with the N6-methyladenosine (m6A) writer METTL3. We also showed that LINC00470-METTL3-mediated PTEN mRNA degradation relied on the m6A reader protein YTHDF2-dependent pathway. Taken together, LINC00470 might serve as a therapeutic target for GC patients. |
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Keywords: | METTL3 YTHDF2 mRNA stability |
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