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8-O-acetyl shanzhiside methylester protects against sleep deprivation-induced cognitive deficits and anxiety-like behaviors by regulating NLRP3 and Nrf2 pathways in mice

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Abstract

Sleep deprivation (SD) is prevalent throughout the world, which has negative effects on cognitive abilities, and causing mood alterations. 8-O-acetyl shanzhiside methylester (8-OaS), a chief component in Lamiophlomis rotata (L. rotata) Kudo, possesses potent neuroprotective properties and analgesic effects. Here, we evaluated the alleviative effects of 8-OaS on memory impairment and anxiety in mice subjected to SD (for 72-h). Our results demonstrated that 8-OaS (0.2, 2, 20 mg/kg) administration dose-dependently ameliorated behavioral abnormalities in SD mice, accompanied with restored synaptic plasticity and reduced shrinkage and loss of hippocampal neurons. 8-OaS reduced the inflammatory response and oxidative stress injury in hippocampus caused by SD, which may be related to inhibition of NLRP3 inflammasome-mediated inflammatory process and activation of the Nrf2/HO-1 pathway. SD also led to increases in the expressions of TLR-4/MyD88, active NF-κB, pro-IL-1β, TNFα and MDA, as well as a decrease in the level of SOD in mice hippocampus, which were reversed by 8-OaS administration. Moreover, our molecular docking analyses showed that 8-OaS also has good affinity for NLRP3 and Nrf2 signaling pathways. These results suggested that 8-OaS could be used as a novel herbal medicine for the treatment of sleep loss and for use as a structural base for developing new drugs.

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Datasets from this study are available from the corresponding author on reasonable request.

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Funding

This study was funded by National Natural Science Foundation of China (No. 82001422 for Dr. Li), The Natural Science Foundation of Jiangsu Province for Dr. Li (Grants No BK. 20200274), and National Natural Science Foundation of China (No. 81901890 for Dr. Zhou).

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Authors and Affiliations

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Contributions

Yujiao-Li designed the study and wrote the manuscript. Xiao-Lu He developed the model and performed part of the behavior test. Jie-Yu Zhang participated in the western blot analysis. Xue-jiao Liu was responsible for morphological experiments. Jia-Long Liang carried out the molecular docking analyses. Yu-jiao Li and Qing Zhou analyzed the data. Guo-Hua Zhou supervised whole experiments. All authors approved the final manuscript for submission.

Corresponding authors

Correspondence to Jia-Long Liang or Qing Zhou.

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Ethical approval

This study was approved by the Animal Care Committee of Jinling Hospital (Approval No.: 2020JLHGKJDWLS-106).

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Not applicable. This study does not contain any studies with human participants performed by any of the authors.

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The authors have no relevant financial or non-financial interests to disclose.

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11011_2022_1132_MOESM1_ESM.jpg

Supplementary Fig. 1 The average body weight of mice in each group before and during 72-h SD with or without 8-OaS administration. Data are presented as the means ± SEM. n = 10 in each group, *p < 0.05, **p < 0.01, versus the control group. (JPG 121 KB)

11011_2022_1132_MOESM2_ESM.jpg

Supplementary Fig. 2 The effects of 8-OaS on spatial working memory of SD mice in Y-maze test. (a) Schematic representation of the Y-maze test. (b) The percentage of spontaneous alternation. (c) The total distance traveled of each group. Data are presented as the means ± SEM. n = 10 in each group, **p < 0.01, versus the control group; #p < 0.05, ##p < 0.01, versus the SD group. (JPG 151 KB)

11011_2022_1132_MOESM3_ESM.jpg

Supplementary Fig. 3 The effects of 8-OaS on the pro-inflammatory cytokine levels in the hippocampus of SD mice. (a) Levels of TNF-α and IL-1β in the hippocampus after SD in five groups. 8-OaS treatment significantly reduced the elevated levels of TNF-α (b) and IL-1β (c) in the hippocampus, as shown by ELISA. Data are presented as the means ± SEM, n = 5 in each group, **p < 0.01, versus the control group; #p < 0.05, ##p < 0.01, versus the SD group. (JPG 241 KB)

11011_2022_1132_MOESM4_ESM.jpg

Supplementary Fig. 4 The effects of 8-OaS on the TLR4-induced inflammatory responses in SD mice. (a) Representative western blot images of TLR4, MyD88, p-p65 and p65 are presented. 8-OaS treatment significantly inhibited the increase of TLR4 (b), MyD88 (c) and p-p65/p65 (d) expressions in mice hippocampus after SD normalized to β-actin. Data are presented as the means ± SEM. n = 5 in each group, **p < 0.01, versus the control group; #p < 0.05, ##p < 0.01, versus the SD group. (JPG 328 KB)

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Li, YJ., He, XL., Zhang, JY. et al. 8-O-acetyl shanzhiside methylester protects against sleep deprivation-induced cognitive deficits and anxiety-like behaviors by regulating NLRP3 and Nrf2 pathways in mice. Metab Brain Dis 38, 641–655 (2023). https://doi.org/10.1007/s11011-022-01132-z

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