Cited by 68Bone Metabolism and DiseasesGenomics, phytochemicals, and oxidative stressVitamin D Research Studies

The DOI matches its Crossref record; 50 of the 52 references it cites were found in a registry or an index.

Inhibition of Nrf2 degradation alleviates age-related osteoporosis induced by 1,25-Dihydroxyvitamin D deficiency

Yang, Renlei, Zhang, Jiao, Li, Jie, Qin, Ran, Chen, Jie, Wang, Rong, Goltzman, David, Miao, Dengshun·2022·Free Radical Biology and Medicine

Abstract

Previous studies have shown that 1,25(OH)2 D plays an anti-osteoporosis role by an anti-aging mechanism. Oxidative stress is a key mediator of aging and bone loss; however, whether 1,25(OH)2 D can exert its anti-osteoporosis effect by inhibiting oxidative stress is unclear. In this study, osteoporosis and the bone aging phenotype induced by 1,25(OH)2 D deficiency in male mice were significantly rescued in vivo upon the supplementation of oltipraz, an inhibitor of Nrf2 degradation. Increased oxidative stress, cellular senescence and reduced osteogenesis of BM-MSCs from VDR knockout mice were also significantly rescued when the cells were pre-treated with oltipraz. We found that 1,25(OH)2 D 3 promoted Nrf2 accumulation by inhibiting its ubiquitin-proteasome degradation, thus facilitating Nrf2 activation of its transcriptional targets. Mechanistically, 1,25(OH)2 D 3 enhances VDR-mediated recruitment of Ezh2 and facilitation of H3K27me3 action at the promoter region of Keap1, thus transcriptionally repressing Keap1. To further validate that the Nrf2-Keap1 pathway serves as the key mediator in the anabolic effect of 1,25(OH)2 D 3 on bone, Nrf2-/- mice, or hBM-MSCs with shRNA-mediated Nrf2-knockdown, were treated with 1,25(OH)2 D 3; we found that Nrf2 knockout largely blocked the bone anabolic effect of 1,25(OH)2 D 3 in vivo and ex vivo, and Nrf2 knockdown in hBM-MSCs markedly blocked the role of 1,25(OH)2 D 3 in inhibiting oxidative stress and promoting osteogenic differentiation and bone formation. This study provides insight into the mechanism whereby 1,25(OH)2 D 3 postpones age-related osteoporosis via VDR-mediated activation of Nrf2-antioxidant signaling and inhibition of oxidative stress, and thus provides evidence for oltipraz as a potential reagent for clinical prevention and treatment of age-related osteoporosis.

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Crossref · 10.1016/j.freeradbiomed.2021.12.010

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Metadata

Authors
Yang, R., Zhang, J., Li, J., Qin, R., Chen, J., Wang, R., Goltzman, D., & Miao, D.
Affiliations
  • State Key Laboratory of Reproductive Medicine (CN)
  • Central South University (CN)
  • Research Institute of the McGill University Health Centre (CA)
Corresponding author
Miao, Dengshun
Venue
Free Radical Biology and Medicine
Publisher
Elsevier BV
Published
2022-01
Volume
178
Pages
246-261
ISSN
0891-5849 (ISSN-L)
OpenAlex
W4200084934
Cited by
67
References
52
Citations by year
2026: 12 · 2025: 10 · 2024: 15 · 2023: 12 · 2022: 18
FWCI
3.53
Type
journal article
Language
en
Open access
closed
Locations
  • Free Radical Biology and Medicine (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Key Research and Development Program of China (2018YFA0800800)
  • Canadian Institutes of Health Research (PJT-152963)
  • National Natural Science Foundation of China (81730066)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bone Metabolism and Diseases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics, phytochemicals, and oxidative stress
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Vitamin D Research Studies
Keywords
senile osteoporosis, 1,25-dihydroxyvitamin D, Nrf2, oltipraz, Nrf2/Keap1 pathway, oxidative stress, vitamin D receptor, EZH2, H3K27me3, Keap1, bone aging, bone marrow mesenchymal stem cells, osteogenic differentiation, bone formation, cellular senescence
MeSH terms
Kelch-Like ECH-Associated Protein 1, Animals, Male, Osteogenesis, Osteoporosis, Vitamin D, Receptors, Calcitriol, NF-E2-Related Factor 2, Mice

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