mTORC1 Couples Nucleotide Synthesis to Nucleotide Demand Resulting in a Targetable Metabolic Vulnerability.
mTORC1 Couples Nucleotide Synthesis to Nucleotide Demand Resulting in a Targetable Metabolic Vulnerability.
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DOI:
10.1016/j.ccell.2017.09.013
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发表时间:
2017-11-13
期刊:
影响因子:
50.3
通讯作者:
Manning BD
中科院分区:
文献类型:
--
作者:
Valvezan AJ;Turner M;Belaid A;Lam HC;Miller SK;McNamara MC;Baglini C;Housden BE;Perrimon N;Kwiatkowski DJ;Asara JM;Henske EP;Manning BD
The mechanistic target of rapamycin complex 1 (mTORC1) supports proliferation through parallel induction of key anabolic processes, including protein, lipid, and nucleotide synthesis. We hypothesized that these processes are coupled to maintain anabolic balance in cells with mTORC1 activation, a common event in human cancers. Loss of the tuberous sclerosis complex (TSC) tumor suppressors results in activation of mTORC1 and development of the tumor syndrome TSC. We find that pharmacological inhibitors of guanylate nucleotide synthesis have selective deleterious effects on TSC-deficient cells, including in mouse tumor models. This effect stems from replication stress and DNA damage caused by mTORC1-driven ribosomal RNA synthesis, which renders nucleotide pools limiting. These findings reveal a metabolic vulnerability downstream of mTORC1 triggered by anabolic imbalance. mTORC1 drives anabolic tumor metabolism, including ribosome biogenesis and nucleotide synthesis. Valvezan et al. show that blocking synthesis of guanine nucleotides while sustaining mTORC1 activity depletes nucleotide pools, causing DNA replication stress and apoptosis in mTORC1-driven tumor models.
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影响因子:
--
作者:
Barfeld SJ;Fazli L;Persson M;Marjavaara L;Urbanucci A;Kaukoniemi KM;Rennie PS;Ceder Y;Chabes A;Visakorpi T;Mills IG
通讯作者:
Mills IG
DOI:
10.1111/j.1349-7006.1990.tb02546.x
发表时间:
1990-03
期刊:
Japanese journal of cancer research : Gann
影响因子:
--
作者:
Chen DY;Kikuchi H;Asamura M;Gamoh M;Wakui A
通讯作者:
Wakui A
影响因子:
81.5
作者:
Henske, Elizabeth P.;Jozwiak, Sergiusz;Thiele, Elizabeth A.
通讯作者:
Thiele, Elizabeth A.
影响因子:
2.8
作者:
He, Yujun;Mou, Zhirong;Wu, Yuzhang
通讯作者:
Wu, Yuzhang
影响因子:
18.4
作者:
Ilagan, Erika;Manning, Brendan D.
通讯作者:
Manning, Brendan D.