Abstract
Cancer cells alter their metabolism to support their malignant properties. In this study, we report that the glucose-transforming polyol pathway (PP) gene aldo-keto-reductase-1-member-B1 ( AKR1B1) strongly correlates with epithelial-to-mesenchymal transition (EMT). This association was confirmed in samples from lung cancer patients and from an EMT-driven colon cancer mouse model with p53 deletion. In vitro, mesenchymal-like cancer cells showed increased AKR1B1 levels, and AKR1B1 knockdown was sufficient to revert EMT. An equivalent level of EMT suppression was measured by targeting the downstream enzyme sorbitol-dehydrogenase (SORD), further pointing at the involvement of the PP. Comparative RNA sequencing confirmed a profound alteration of EMT in PP-deficient cells, revealing a strong repression of TGFβ signature genes. Excess glucose was found to promote EMT through autocrine TGFβ stimulation, while PP-deficient cells were refractory to glucose-induced EMT. These data show that PP represents a molecular link between glucose metabolism, cancer differentiation, and aggressiveness, and may serve as a novel therapeutic target. Significance: A glucose-transforming pathway in TGFβ-driven epithelial-to-mesenchymal transition provides novel mechanistic insights into the metabolic control of cancer differentiation. Cancer Res; 78(7); 1604-18. ©2018 AACR.
Original language | English |
---|---|
Journal | Cancer Research |
Volume | 78 |
Issue number | 7 |
Pages (from-to) | 1604-1618 |
Number of pages | 15 |
ISSN | 0008-5472 |
DOIs | |
Publication status | Published - Apr 2018 |
Externally published | Yes |
Keywords
- A549 Cells
- Aldehyde Reductase/genetics
- Animals
- Cell Line, Tumor
- Colonic Neoplasms/pathology
- Epithelial-Mesenchymal Transition/genetics
- Glucose/metabolism
- HCT116 Cells
- HEK293 Cells
- HT29 Cells
- Humans
- L-Iditol 2-Dehydrogenase/genetics
- Lung Neoplasms/pathology
- MCF-7 Cells
- Mice
- RNA Interference
- RNA, Small Interfering/genetics
- Transforming Growth Factor beta/metabolism