Non-oncogene Addiction to SIRT3 Plays a Critical Role in Lymphomagenesis.
Non-oncogene Addiction to SIRT3 Plays a Critical Role in Lymphomagenesis.
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DOI:
10.1016/j.ccell.2019.05.002
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发表时间:
2019-06-10
期刊:
影响因子:
50.3
通讯作者:
Melnick AM
中科院分区:
文献类型:
--
作者:
Li M;Chiang YL;Lyssiotis CA;Teater MR;Hong JY;Shen H;Wang L;Hu J;Jing H;Chen Z;Jain N;Duy C;Mistry SJ;Cerchietti L;Cross JR;Cantley LC;Green MR;Lin H;Melnick AM
Diffuse large B-cell lymphomas (DLBCLs) are genetically heterogeneous and highly proliferative neoplasms derived from germinal center (GC) B-cells. Herein, we show that DLBCLs are dependent on mitochondrial lysine deacetylase SIRT3 for proliferation, survival, self-renewal, and tumor growth in vivo regardless of disease subtype and genetics. SIRT3 knockout attenuated B-cell lymphomagenesis in VavP-Bcl2 mice without affecting normal GC formation. Mechanistically, SIRT3 depletion impaired glutamine flux to the TCA cycle via glutamate dehydrogenase and reduction in acetyl-CoA pools, which in turn induce autophagy and cell death. We developed a mitochondrial-targeted Class I sirtuin inhibitor, YC8-02, that phenocopied the effects of SIRT3 depletion and killed DLBCL cells. SIRT3 is thus a metabolic non-oncogene addiction and therapeutic target for DLBCLs.
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