期刊
JOURNAL OF CLINICAL INVESTIGATION
卷 128, 期 1, 页码 323-340出版社
AMER SOC CLINICAL INVESTIGATION INC
DOI: 10.1172/JCI93815
关键词
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资金
- NIH, NCI, Center for Cancer Research
- Department of Defense [W81XWH-12-546 1-0130]
- National Science Foundation [DMS 1161759]
- NIH [U01 CA167234, R21-CA185516-01]
- NCI [2P30CA125123-09, 127430-RSG-15-105-01-CNE]
- CPRIT Metabolomics Core Facility Support Award [RP120092]
Metabolic reprogramming in breast tumors is linked to increases in putative oncogenic metabolites that may contribute to malignant transformation. We previously showed that accumulation of the oncometabolite, 2-hydroxyglutarate (2HG), in breast tumors was associated with MYC signaling, but not with isocitrate dehydrogenase (IDH) mutations, suggesting a distinct mechanism for increased 2HG in breast cancer. Here, we determined that D-2HG is the predominant enantiomer in human breast tumors and show that the D-2HG-producing mitochondrial enzyme, alcohol dehydrogenase, iron-containing protein 1 (ADHFE1), is a breast cancer oncogene that decreases patient survival. We found that MYC upregulates ADHFE1 through changes in iron metabolism while coexpression of both ADHFE1 and MYC strongly enhanced orthotopic tumor growth in MCF7 cells. Moreover, ADHFE1 promoted metabolic reprogramming with increased formation of D-2HG and reactive oxygen, a reductive glutamine metabolism, and modifications of the epigenetic landscape, leading to cellular dedifferentiation, enhanced mesenchymal transition, and phenocopying alterations that occur with high D-2HG levels in cancer cells with IDH mutations. Together, our data support the hypothesis that ADHFE1 and MYC signaling contribute to D-2HG accumulation in breast tumors and show that D-2HG is an oncogenic metabolite and potential driver of disease progression.
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