Dihydroxyacetone phosphate signals glucose availability to mTORC1.
Dihydroxyacetone phosphate signals glucose availability to mTORC1.
复制标题
DOI:
10.1038/s42255-020-0250-5
复制
发表时间:
2020-09
影响因子:
20.8
通讯作者:
Sabatini DM
中科院分区:
文献类型:
--
作者:
Orozco JM;Krawczyk PA;Scaria SM;Cangelosi AL;Chan SH;Kunchok T;Lewis CA;Sabatini DM
The mTOR complex 1 (mTORC1) kinase regulates cell growth by setting the balance between anabolic and catabolic processes. To be active, mTORC1 requires the environmental presence of amino acids and glucose. While a mechanistic understanding of amino acid sensing by mTORC1 is emerging, how glucose activates mTORC1 remains mysterious. Here, we used metabolically engineered human cells lacking the canonical energy sensor AMPK to identify glucose-derived metabolites required to activate mTORC1 independent of energetic stress. We show that mTORC1 senses a metabolite downstream of the aldolase and upstream of the glyceraldehyde 3-phosphate dehydrogenase steps of glycolysis and pinpoint dihydroxyacetone phosphate (DHAP) as the key molecule. In cells expressing a triose kinase, the synthesis of DHAP from dihydroxyacetone is sufficient to activate mTORC1 even in the absence of glucose. DHAP is a precursor for lipid synthesis, a process under the control of mTORC1, which provides a potential rationale for the sensing of DHAP by mTORC1.
登录
查看更多内容
影响因子:
29
作者:
Jang C;Hui S;Lu W;Cowan AJ;Morscher RJ;Lee G;Liu W;Tesz GJ;Birnbaum MJ;Rabinowitz JD
通讯作者:
Rabinowitz JD
影响因子:
56.9
作者:
Fang, YM;Vilella-Bach, M;Chen, J
通讯作者:
Chen, J
影响因子:
56.9
作者:
Dennis, PB;Jaeschke, A;Thomas, G
通讯作者:
Thomas, G
影响因子:
64.8
作者:
Huttlin EL;Bruckner RJ;Paulo JA;Cannon JR;Ting L;Baltier K;Colby G;Gebreab F;Gygi MP;Parzen H;Szpyt J;Tam S;Zarraga G;Pontano-Vaites L;Swarup S;White AE;Schweppe DK;Rad R;Erickson BK;Obar RA;Guruharsha KG;Li K;Artavanis-Tsakonas S;Gygi SP;Harper JW
通讯作者:
Harper JW
影响因子:
29
作者:
Liberti MV;Dai Z;Wardell SE;Baccile JA;Liu X;Gao X;Baldi R;Mehrmohamadi M;Johnson MO;Madhukar NS;Shestov AA;Chio IIC;Elemento O;Rathmell JC;Schroeder FC;McDonnell DP;Locasale JW
通讯作者:
Locasale JW