Title |
ATF4-Induced Metabolic Reprograming Is a Synthetic Vulnerability of the p62-Deficient Tumor Stroma
|
---|---|
Published in |
Cell Metabolism (Science Direct), October 2017
|
DOI | 10.1016/j.cmet.2017.09.001 |
Pubmed ID | |
Authors |
Juan F. Linares, Thekla Cordes, Angeles Duran, Miguel Reina-Campos, Tania Valencia, Christopher S. Ahn, Elias A. Castilla, Jorge Moscat, Christian M. Metallo, Maria T. Diaz-Meco |
Abstract |
Tumors undergo nutrient stress and need to reprogram their metabolism to survive. The stroma may play a critical role in this process by providing nutrients to support the epithelial compartment of the tumor. Here we show that p62 deficiency in stromal fibroblasts promotes resistance to glutamine deprivation by the direct control of ATF4 stability through its p62-mediated polyubiquitination. ATF4 upregulation by p62 deficiency in the stroma activates glucose carbon flux through a pyruvate carboxylase-asparagine synthase cascade that results in asparagine generation as a source of nitrogen for stroma and tumor epithelial proliferation. Thus, p62 directly targets nuclear transcription factors to control metabolic reprogramming in the microenvironment and repress tumorigenesis, and identifies ATF4 as a synthetic vulnerability in p62-deficient tumor stroma. |
X Demographics
Geographical breakdown
Country | Count | As % |
---|---|---|
Canada | 2 | 12% |
Spain | 2 | 12% |
United States | 2 | 12% |
United Kingdom | 2 | 12% |
Netherlands | 1 | 6% |
Australia | 1 | 6% |
Unknown | 7 | 41% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Scientists | 10 | 59% |
Members of the public | 6 | 35% |
Science communicators (journalists, bloggers, editors) | 1 | 6% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 125 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 27 | 22% |
Researcher | 18 | 14% |
Student > Master | 11 | 9% |
Student > Postgraduate | 10 | 8% |
Student > Bachelor | 9 | 7% |
Other | 21 | 17% |
Unknown | 29 | 23% |
Readers by discipline | Count | As % |
---|---|---|
Biochemistry, Genetics and Molecular Biology | 59 | 47% |
Agricultural and Biological Sciences | 17 | 14% |
Pharmacology, Toxicology and Pharmaceutical Science | 6 | 5% |
Medicine and Dentistry | 3 | 2% |
Immunology and Microbiology | 3 | 2% |
Other | 9 | 7% |
Unknown | 28 | 22% |