NRF2 activation by antioxidant antidiabetic agents accelerates tumor metastasis.
Rojo de la Vega, Montserrat
Zhang, Donna D
AffiliationUniv Arizona, Coll Pharm, Dept Pharmacol & Toxicol
MetadataShow full item record
PublisherAMER ASSOC ADVANCEMENT SCIENCE
CitationNRF2 activation by antioxidant antidiabetic agents accelerates tumor metastasis. 2016, 8 (334):334ra51 Sci Transl Med
JournalScience translational medicine
RightsCopyright © 2016, American Association for the Advancement of Science
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at email@example.com.
AbstractCancer is a common comorbidity of diabetic patients; however, little is known about the effects that antidiabetic drugs have on tumors. We discovered that common classes of drugs used in type 2 diabetes mellitus, the hypoglycemic dipeptidyl peptidase-4 inhibitors (DPP-4i) saxagliptin and sitagliptin, as well as the antineuropathic α-lipoic acid (ALA), do not increase tumor incidence but increase the risk of metastasis of existing tumors. Specifically, these drugs induce prolonged activation of the nuclear factor E2-related factor 2 (NRF2)-mediated antioxidant response through inhibition of KEAP1-C151-dependent ubiquitination and subsequent degradation of NRF2, resulting in up-regulated expression of metastasis-associated proteins, increased cancer cell migration, and promotion of metastasis in xenograft mouse models. Accordingly, knockdown ofNRF2attenuated naturally occurring and DPP-4i-induced tumor metastasis, whereas NRF2 activation accelerated metastasis. Furthermore, in human liver cancer tissue samples, increased NRF2 expression correlated with metastasis. Our findings suggest that antioxidants that activate NRF2 signaling may need to be administered with caution in cancer patients, such as diabetic patients with cancer. Moreover, NRF2 may be a potential biomarker and therapeutic target for tumor metastasis.
NotePublished 13 April 2016. 6 month embargo.
VersionFinal accepted manuscript
CollectionsUA Faculty Publications
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- Response to comment on "NRF2 activation by antioxidant antidiabetic agents accelerates tumor metastasis".
- Authors: Wang H, Rojo de la Vega M, Zhang DD, Yu S, Zheng H
- Issue date: 2016 Jul 27