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Li Q, Yang L, Zhang C, Yuan J, Zhang J, Tao W, Zhou J. METTL16 deficiency attenuates apoptosis through translational control of extrinsic death receptor during nutrient deprivation. Biochem Biophys Res Commun 2024; 708:149802. [PMID: 38520913 DOI: 10.1016/j.bbrc.2024.149802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Accepted: 03/18/2024] [Indexed: 03/25/2024]
Abstract
METTL16 is a well-characterized m6A methyltransferase that has been reported to contribute to tumorigenesis in various types of cancer. However, the effect of METTL16 on tumor progression under restricted nutrient conditions, which commonly occur in tumor microenvironment, has yet to be elucidated. Herein, our study initially reported the inhibitory effect of METTL16 depletion on apoptosis under amino acid starvation conditions. Mechanistically, we determined that the METTL16 knockdown represses the expression of extrinsic death receptors at both transcription and translation levels. Depletion of METTL16 prevented protein synthesis of GCN2, resulting in diminished ATF4 expression in a GCN2-eIF2α-dependent manner. Reduction of ATF4 further declined the expression of apoptotic receptor protein DR5. Meanwhile, METTL16 deficiency directly hampered protein synthesis of FADD and DR5, thereby impairing apoptosis and promoting cancer cell survival. Taken together, our study provides novel evidence for the involvement of METTL16 in regulating cancer progression, suggesting that METTL16 as a potential therapeutic target for cancer treatment.
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Affiliation(s)
- Qiujie Li
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu, 210009, China
| | - Lu Yang
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu, 210009, China
| | - Chenxin Zhang
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu, 210009, China
| | - Jingying Yuan
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu, 210009, China
| | - Jun Zhang
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu, 210009, China
| | - Wenjun Tao
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu, 210009, China
| | - Jun Zhou
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu, 210009, China; State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, Jiangsu, 210009, China; Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 21009, China.
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