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He H, Han Y, Wan Q, Yue Y, Li S, Su B, Li J. Curcumin inhibits propofol-induced autophagy of MN9D cells via Akt/mTOR/p70S6K signaling pathway. Cell Biol Int 2024; 48:461-472. [PMID: 38196274 DOI: 10.1002/cbin.12117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 11/20/2023] [Accepted: 12/13/2023] [Indexed: 01/11/2024]
Abstract
The rapid rise in propofol dependency and abuse has highlighted limited resources for addressing substance abuse-related cognitive impairment, prompting the development of novel therapies. Dysregulated autophagy flow accelerates neuronal cell death, and interventions countering this dysregulation offer an appealing strategy for neuronal protection. Curcumin, a potent natural polyphenol derived from turmeric rhizomes, is renowned for its robust antineurotoxic properties and enhanced cognitive function. Utilizing CCK-8 and Ki67 fluorescent staining, our study revealed that curcumin treatment increased cell viability and proliferative potential in MN9D cells exposed to propofol-induced neurotoxicity. Furthermore, enzyme-linked immunosorbent assay and western blot analysis demonstrated the partial restoration of dopamine synthesis, secretion levels, and TH expression in damaged MN9D cells treated with curcumin. Scanning electrode microscope images displayed reduced autolysosomes and phagosomes in curcumin-treated cells compared to the propofol group. Immunoblotting revealed that curcumin mitigated the degradation of LC3I to LC3II and p62 induced by propofol stimulation, with green fluorescence expression of LC3 postcurcumin treatment resembling that following autophagy inhibitor HCQ treatment, indicating that modulating autophagy flow can alleviate propofol's toxic effects. Moreover, curcumin treatment upregulated the Akt/mTOR/p70S6K signaling pathway, suggesting that curcumin potentially curtails autophagy dysregulation in nerve cells by activating Akt/mTOR/p70S6K. In conclusion, our findings suggest that curcumin can ameliorate propofol abuse-induced neurotoxicity, partially through autophagy regulation and Akt/mTOR/p70S6K signaling activation.
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Affiliation(s)
- Hongxia He
- Department of Anesthesiology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, China
- Development and Regeneration Key Lab of Sichuan Province, Department of Histology and Embryology, Department of Pathology, Chengdu Medical College, Chengdu, Sichuan, China
- Mianyang Key Laboratory of Anesthesia and Neuro-regulation, Department of Anesthesiology, Mianyang Central Hospital, Mianyang, Sichuan, China
| | - Yuping Han
- Development and Regeneration Key Lab of Sichuan Province, Department of Histology and Embryology, Department of Pathology, Chengdu Medical College, Chengdu, Sichuan, China
| | - Qiuyan Wan
- Department of Anesthesiology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, China
- Development and Regeneration Key Lab of Sichuan Province, Department of Histology and Embryology, Department of Pathology, Chengdu Medical College, Chengdu, Sichuan, China
- Mianyang Key Laboratory of Anesthesia and Neuro-regulation, Department of Anesthesiology, Mianyang Central Hospital, Mianyang, Sichuan, China
| | - Yao Yue
- Development and Regeneration Key Lab of Sichuan Province, Department of Histology and Embryology, Department of Pathology, Chengdu Medical College, Chengdu, Sichuan, China
| | - Shurong Li
- Development and Regeneration Key Lab of Sichuan Province, Department of Histology and Embryology, Department of Pathology, Chengdu Medical College, Chengdu, Sichuan, China
| | - Bingyin Su
- Development and Regeneration Key Lab of Sichuan Province, Department of Histology and Embryology, Department of Pathology, Chengdu Medical College, Chengdu, Sichuan, China
| | - Jun Li
- Department of Anesthesiology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, China
- Mianyang Key Laboratory of Anesthesia and Neuro-regulation, Department of Anesthesiology, Mianyang Central Hospital, Mianyang, Sichuan, China
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Sun B, Ou H, Ren F, Guan Y, Huan Y, Cai H. Propofol Protects against Cerebral Ischemia/Reperfusion Injury by Down-Regulating Long Noncoding RNA SNHG14. ACS Chem Neurosci 2021; 12:3002-3014. [PMID: 34369750 DOI: 10.1021/acschemneuro.1c00059] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Cerebral ischemia-reperfusion (CI/R) injury is a serious central nervous system disease. Propofol (PPF) exerts a neuroprotective effect in CI/R injury; the underlying cause is still unclear. Here, we cultured mouse hippocampal neuron (HT22 cells) in oxygen-glucose deprivation/reoxygenation (OGD/R) conditions to mimic CI/R injury in vitro. PPF treatment promoted cell viability and reduced apoptotic cells in the OGD/R-treated HT22 cells, which was effectively abrogated by SNHG14 overexpression. Moreover, we constructed a CI/R injury mouse model on C57BL/6J mice by middle cerebral artery occlusion/reperfusion (MCAO/R), followed by administration of PPF. PPF reduced neuronal damage and loss, enhanced glial cell hyperplasia, and ameliorated cerebral cortex tissue damage and brain infarct in MCAO/R-induced mice. SNHG14 overexpression aggravated MCAO/R-induced CI/R injury in mice. Furthermore, SNHG14 promoted the expression of Atg5 and Beclin 1 via competitively binding miR-30b-5p, which contributed to activate autophagy and apoptosis in HT22 cells. In addition, the levels of p-p38 and p-SP1 were reduced in the OGD/R-treated HT22 cells in the presence of PPF. SP1 interacted with the promoter of SNHG14 and elevated the expression of SNHG14. PPF treatment inhibited the SP1-mediated up-regulation of SNHG14. In conclusion, this work demonstrates that PPF inhibits SNHG14 expression though the p38 MAPK signaling pathway. SNHG14 promotes Atg5 and Beclin 1 expression by sponging miR-30b-5p and thus activates autophagy and aggravates CI/R injury.
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Affiliation(s)
- Bei Sun
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China
| | - Hao Ou
- Department of Emergency and Critical Care Medicine, The Third Xiangya Hospital, Central South University, Changsha 410013, Hunan, China
| | - Fei Ren
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China
| | - Yujiao Guan
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China
| | - Ye Huan
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China
| | - Hongwei Cai
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China
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