Title |
Glucose-Mediated N-glycosylation of SCAP Is Essential for SREBP-1 Activation and Tumor Growth
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Published in |
Cancer Cell, November 2015
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DOI | 10.1016/j.ccell.2015.09.021 |
Pubmed ID | |
Authors |
Chunming Cheng, Peng Ru, Feng Geng, Junfeng Liu, Ji Young Yoo, Xiaoning Wu, Xiang Cheng, Vanessa Euthine, Peng Hu, Jeffrey Yunhua Guo, Etienne Lefai, Balveen Kaur, Axel Nohturfft, Jianjie Ma, Arnab Chakravarti, Deliang Guo |
Abstract |
Tumorigenesis is associated with increased glucose consumption and lipogenesis, but how these pathways are interlinked is unclear. Here, we delineate a pathway in which EGFR signaling, by increasing glucose uptake, promotes N-glycosylation of sterol regulatory element-binding protein (SREBP) cleavage-activating protein (SCAP) and consequent activation of SREBP-1, an ER-bound transcription factor with central roles in lipid metabolism. Glycosylation stabilizes SCAP and reduces its association with Insig-1, allowing movement of SCAP/SREBP to the Golgi and consequent proteolytic activation of SREBP. Xenograft studies reveal that blocking SCAP N-glycosylation ameliorates EGFRvIII-driven glioblastoma growth. Thus, SCAP acts as key glucose-responsive protein linking oncogenic signaling and fuel availability to SREBP-dependent lipogenesis. Targeting SCAP N-glycosylation may provide a promising means of treating malignancies and metabolic diseases. |
X Demographics
Geographical breakdown
Country | Count | As % |
---|---|---|
United States | 6 | 26% |
Austria | 1 | 4% |
India | 1 | 4% |
Brazil | 1 | 4% |
Saudi Arabia | 1 | 4% |
Unknown | 13 | 57% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Members of the public | 17 | 74% |
Practitioners (doctors, other healthcare professionals) | 3 | 13% |
Scientists | 3 | 13% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
United Kingdom | 1 | <1% |
United States | 1 | <1% |
Unknown | 162 | 99% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 38 | 23% |
Researcher | 26 | 16% |
Student > Bachelor | 17 | 10% |
Student > Master | 13 | 8% |
Student > Doctoral Student | 12 | 7% |
Other | 20 | 12% |
Unknown | 38 | 23% |
Readers by discipline | Count | As % |
---|---|---|
Biochemistry, Genetics and Molecular Biology | 56 | 34% |
Agricultural and Biological Sciences | 26 | 16% |
Medicine and Dentistry | 14 | 9% |
Pharmacology, Toxicology and Pharmaceutical Science | 6 | 4% |
Immunology and Microbiology | 4 | 2% |
Other | 11 | 7% |
Unknown | 47 | 29% |