The DOI matches its Crossref record; 15 of the 15 references it cites were found in a registry or an index.
A novel compound DBZ ameliorates neuroinflammation in LPS-stimulated microglia and ischemic stroke rats: Role of Akt(Ser473)/GSK3β(Ser9)-mediated Nrf2 activation
Open accessAbstract
Microglia-mediated neuroinflammation plays a crucial role in the pathophysiological process of multiple neurological disorders such as ischemic stroke, yet lacks effective therapeutic agents. Previously, we discovered one novel synthetic compound, tanshinol borneol ester (DBZ), possesses anti-inflammatory and anti-atherosclerotic activities, whereas little is known about its effects in CNS. Therefore, the present study aims to explore the effects and potential mechanism of DBZ on neuroinflammation and microglial function. Our studies revealed that DBZ significantly inhibited NF-κB activity, suppressed the production of pro-inflammatory mediators meanwhile promoted M2 mediators expression in LPS-stimulated BV2 cells and mouse primary microglia cells. DBZ also exhibited antioxidant activity by enhancing Nrf2 nuclear accumulation and transcriptional activity, increasing HO-1 and NQO1 expression, and inhibiting LPS-induced ROS generation in BV2 cells. Importantly, the anti-neuroinflammatory and antioxidant effects of DBZ above were reversed by Nrf2 knockdown. Additionally, DBZ ameliorated sickness behaviors of neuroinflammatory mice induced by systemic LPS administration, and significantly reduced infract volume, improved sensorimotor and cognitive function in rats subjected to transient middle cerebral artery occlusion (tMCAO); besides, DBZ restored microglia morphological alterations and shifted the M1/M2 polarization in both murine models. Mechanistically, DBZ-induced Nrf2 nuclear accumulation and antioxidant enzymes expression were accompanied by increased level of p-Akt(Ser473) (activation) and p-GSK3β(Ser9) (inactivation), and decreased nuclear level of Fyn both in vitro and in vivo. Pharmacologically inhibiting PI3K or activating GSK3β markedly increased nuclear density of Fyn in microglia cells, which blocked the promoting effect of DBZ on Nrf2 nuclear accumulation and its antioxidant and anti-neuroinflammatory activities. Collectively, these results indicated the effects of DBZ on microglia-mediated neuroinflammation were strongly associated with the nuclear accumulation and stabilization of Nrf2 via the Akt(Ser473)/GSK3β(Ser9)/Fyn pathway. With anti-neuroinflammatory and antioxidant properties, DBZ could be a promising new drug candidate for prevention and/or treatment of cerebral ischemia and other neuroinflammatory disorders.
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Cited by
Sun, Y.-Y., Zhu, H.-J., Zhao, R.-Y., Zhou, S.-Y., Wang, M.-Q., Yang, Y., & Guo, Z.-N. (2023) · Redox Biology · doi:10.1016/j.redox.2023.102852 · Cited by 279
Self-citationZeng, J., Bao, T., Yang, K., Zhu, X., Wang, S., Xiang, W., Ge, A., Zeng, L., & Ge, J. (2023) · Frontiers in Immunology · doi:10.3389/fimmu.2022.1047550 · Cited by 175
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Metadata
- Authors
- Liao, S., Wu, J., Liu, R., Wang, S., Luo, J., Yang, Y., Qin, Y., Li, T., Zheng, X., Song, J., Zhao, X., Xiao, C., Zhang, Y., Bian, L., Jia, P., Bai, Y., & Zheng, X.
- Venue
- Redox Biology
- Publisher
- Elsevier BV
- Published
- 2020-09
- Volume
- 36
- Pages
- 101644
- ISSN
- 2213-2317 (ISSN-L)
- OpenAlex
- W3043293892
- Cited by
- 209
- References
- 15
- FWCI
- 8.27
- Type
- journal article
- Language
- en
- Status
- Retracted
- Open access
- gold
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- Liao, S., Wu, J., Liu, R., Wang, S., Luo, J., Yang, Y., Qin, Y., Li, T., Zheng, X., Song, J., Zhao, X., Xiao, C., Zhang, Y., Bian, L., Jia, P., Bai, Y., & Zheng, X. (2020). A novel compound DBZ ameliorates neuroinflammation in LPS-stimulated microglia and ischemic stroke rats: Role of Akt(Ser473)/GSK3β(Ser9)-mediated Nrf2 activation. Redox Biology. https://doi.org/10.1016/j.redox.2020.101644
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