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Hu J, Duan H, Zou J, Ding W, Wei Z, Peng Q, Li Z, Duan R, Sun J, Zhu J. METTL3-dependent N6-methyladenosine modification is involved in berberine-mediated neuroprotection in ischemic stroke by enhancing the stability of NEAT1 in astrocytes. Aging (Albany NY) 2024; 16:299-321. [PMID: 38180752 PMCID: PMC10817396 DOI: 10.18632/aging.205369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 11/16/2023] [Indexed: 01/06/2024]
Abstract
Ischemic stroke (IS) is one of the principal causes of disability and death worldwide. Berberine (BBR), derived from the traditional Chinese herbal medicine Huang Lian, has been reported to inhibit the progression of stroke, but the specific mechanism whereby BBR modulates the progression of ischemic stroke remains unclear. N6-methyladenosine (m6A) modification is the most typical epigenetic modification of mRNA post-transcriptional modifications, among which METTL3 is the most common methylation transferase. During the study, the middle cerebral artery occlusion/reperfusion (MCAO/R) was established in mice, and the mice primary astrocytes and neurons induced by oxygen-glucose deprivation/reoxygenation (OGD/R) was simulated in vitro. Level of LncNEAT1, miR-377-3p was detected via RT-qPCR. The levels of Nampt and METTL3 were measured by Western blot. CCK8 and LDH assay was performed to detect cell viability. Here, we found that berberine alleviates MCAO/R-induced ischemic injury and up-regulates the expression of Nampt in astrocytes, miR-377-3p inhibits the expression of Nampt in astrocytes after OGD/R, thus promoting neuronal injury. NEAT1 binds to miR-377-3p in OGD/R astrocytes and plays a neuronal protective role as a ceRNA. METTL3 can enhance NEAT1 stability in OGD/R astrocytes by modulating m6A modification of NEAT1. Taken together, our results demonstrate that berberine exerts neuroprotective effects via the m6A methyltransferase METTL3, which regulates the NEAT1/miR-377-3p/Nampt axis in mouse astrocytes to ameliorate cerebral ischemia/reperfusion (I/R) injury.
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Affiliation(s)
- Junya Hu
- Department of Pharmacy, Nanjing First Hospital, China Pharmaceutical University, Nanjing 210006, China
- Department of Pharmacy, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Huijie Duan
- Department of Pharmacy, Nanjing First Hospital, China Pharmaceutical University, Nanjing 210006, China
- Department of Pharmacy, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Junqing Zou
- Department of Pharmacy, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Wangli Ding
- Department of Pharmacy, Nanjing First Hospital, China Pharmaceutical University, Nanjing 210006, China
- Department of Pharmacy, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Ziqiao Wei
- Department of Second Clinical Medical School, Nanjing Medical University, Nanjing 210000, China
| | - Qiang Peng
- Department of Neurology, Nanjing First Hospital, Nanjing 210006, China
| | - Zhongyuan Li
- Department of Neurology, Nanjing First Hospital, Nanjing 210006, China
| | - Rui Duan
- Department of Neurology, Nanjing First Hospital, Nanjing 210006, China
| | - Jianguo Sun
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Junrong Zhu
- Department of Pharmacy, Nanjing First Hospital, China Pharmaceutical University, Nanjing 210006, China
- Department of Pharmacy, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
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