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Wen Y, Fu Z, Li J, Liu M, Wang X, Chen J, Chen Y, Wang H, Wen S, Zhang K, Deng Y. Targeting m 6A mRNA demethylase FTO alleviates manganese-induced cognitive memory deficits in mice. JOURNAL OF HAZARDOUS MATERIALS 2024; 476:134969. [PMID: 38908185 DOI: 10.1016/j.jhazmat.2024.134969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 05/29/2024] [Accepted: 06/17/2024] [Indexed: 06/24/2024]
Abstract
Manganese (Mn) induced learning and memory deficits through mechanisms that are not fully understood. In this study, we discovered that the demethylase FTO was significantly downregulated in hippocampal neurons in an experimental a mouse model of Mn exposure. This decreased expression of FTO was associated with Mn-induced learning and memory impairments, as well as the dysfunction in synaptic plasticity and damage to regional neurons. The overexpression of FTO, or its positive modulation with agonists, provides protection against neurological damage and cognitive impairments. Mechanistically, FTO interacts synergistically with the reader YTHDF3 to facilitate the degradation of GRIN1 and GRIN3B through the m6A modification pathway. Additionally, Mn decreases the phosphorylation of SOX2, which specifically impairs the transcriptional regulation of FTO activity. Additionally, we found that the natural compounds artemisinin and apigenin that can bind molecularly with SOX2 and reduce Mn-induced cognitive dysfunction in mice. Our findings suggest that the SOX2-FTO-Grins axis represents a viable target for addressing Mn-induced neurotoxicity and cognitive impairments.
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Affiliation(s)
- Yi Wen
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, China; Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention, Ministry of Education, China Medical University, Shenyang, China; Engineering research center of Liaoning Province on environmental health technology and equipment, China Medical University, Shenyang, China
| | - Zhushan Fu
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, China; Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention, Ministry of Education, China Medical University, Shenyang, China; Engineering research center of Liaoning Province on environmental health technology and equipment, China Medical University, Shenyang, China
| | - Jiashuo Li
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, China; Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention, Ministry of Education, China Medical University, Shenyang, China; Engineering research center of Liaoning Province on environmental health technology and equipment, China Medical University, Shenyang, China; Department of Occupational and Environmental Health, School of Public Health, Shenyang Medical College, Shenyang, China
| | - Mingyue Liu
- Department of Developmental Cell Biology, School of Life Sciences, China Medical University, Shenyang, China; Key Laboratory of Medical Cell Biology, Ministry of Education, China Medical University, Shenyang, China
| | - Xinmiao Wang
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, China; Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention, Ministry of Education, China Medical University, Shenyang, China; Engineering research center of Liaoning Province on environmental health technology and equipment, China Medical University, Shenyang, China
| | - Jingqi Chen
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, China; Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention, Ministry of Education, China Medical University, Shenyang, China; Engineering research center of Liaoning Province on environmental health technology and equipment, China Medical University, Shenyang, China
| | - Yue Chen
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, China; Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention, Ministry of Education, China Medical University, Shenyang, China; Engineering research center of Liaoning Province on environmental health technology and equipment, China Medical University, Shenyang, China
| | - Haocheng Wang
- Department of Biochemistry and Molecular Biology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, United States
| | - Sihang Wen
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, China; Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention, Ministry of Education, China Medical University, Shenyang, China; Engineering research center of Liaoning Province on environmental health technology and equipment, China Medical University, Shenyang, China
| | - Ke Zhang
- Department of Developmental Cell Biology, School of Life Sciences, China Medical University, Shenyang, China; Key Laboratory of Medical Cell Biology, Ministry of Education, China Medical University, Shenyang, China.
| | - Yu Deng
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, China; Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention, Ministry of Education, China Medical University, Shenyang, China; Engineering research center of Liaoning Province on environmental health technology and equipment, China Medical University, Shenyang, China; Institute of Health Professions Education Assessment and Reform, China Medical University, Shenyang, China.
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Zhang J, Xiong YW, Zhu HL, Tan LL, Zhou H, Zheng XM, Zhang YF, Chang W, Xu DX, Wei T, Guan SZ, Wang H. Adolescent co-exposure to environmental cadmium and high-fat diet induces cognitive decline via Larp7 m6A-mediated SIRT6 inhibition. JOURNAL OF HAZARDOUS MATERIALS 2024; 476:135159. [PMID: 39002485 DOI: 10.1016/j.jhazmat.2024.135159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Revised: 07/07/2024] [Accepted: 07/07/2024] [Indexed: 07/15/2024]
Abstract
The effects and underlying mechanisms of adolescent exposure to combined environmental hazards on cognitive function remain unclear. Here, using a combined exposure model, we found significant cognitive decline, hippocampal neuronal damage, and neuronal senescence in mice exposed to cadmium (Cd) and high-fat diet (HFD) during adolescence. Furthermore, we observed a significant downregulation of Sirtuin 6 (SIRT6) expression in the hippocampi of co-exposed mice. UBCS039, a specific SIRT6 activator, markedly reversed the above adverse effects. Further investigation revealed that co-exposure obviously reduced the levels of La ribonucleoprotein 7 (LARP7), disrupted the interaction between LARP7 and SIRT6, ultimately decreasing SIRT6 expression in mouse hippocampal neuronal cells. Overexpression of Larp7 reversed the combined exposure-induced SIRT6 decrease and senescence in mouse hippocampal neuronal cells. Additionally, the results showed notably elevated levels of Larp7 m6A and YTH domain family protein 2 (YTHDF2) in mouse hippocampal neuronal cells treated with the combined hazards. Ythdf2 short interfering RNA, RNA immunoprecipitation, and RNA stability assays further demonstrated that YTHDF2 mediated the degradation of Larp7 mRNA under combined exposure. Collectively, adolescent co-exposure to Cd and HFD causes hippocampal senescence and cognitive decline in mice by inhibiting LARP7-mediated SIRT6 expression in an m6A-dependent manner.
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Affiliation(s)
- Jin Zhang
- Department of Toxicology, School of Public Health, Center for Big Data and Population Health of IHM, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Yong-Wei Xiong
- Department of Toxicology, School of Public Health, Center for Big Data and Population Health of IHM, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China; Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People's Republic of China, China
| | - Hua-Long Zhu
- Department of Toxicology, School of Public Health, Center for Big Data and Population Health of IHM, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China; Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People's Republic of China, China
| | - Lu-Lu Tan
- Department of Toxicology, School of Public Health, Center for Big Data and Population Health of IHM, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Huan Zhou
- Department of Toxicology, School of Public Health, Center for Big Data and Population Health of IHM, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Xin-Mei Zheng
- Department of Toxicology, School of Public Health, Center for Big Data and Population Health of IHM, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Yu-Feng Zhang
- Department of Toxicology, School of Public Health, Center for Big Data and Population Health of IHM, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Wei Chang
- Department of Toxicology, School of Public Health, Center for Big Data and Population Health of IHM, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - De-Xiang Xu
- Department of Toxicology, School of Public Health, Center for Big Data and Population Health of IHM, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China; Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People's Republic of China, China
| | - Tian Wei
- Department of Toxicology, School of Public Health, Center for Big Data and Population Health of IHM, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China; Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People's Republic of China, China.
| | - Su-Zhen Guan
- School of Public Health, Ningxia Medical University, China.
| | - Hua Wang
- Department of Toxicology, School of Public Health, Center for Big Data and Population Health of IHM, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China; Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People's Republic of China, China.
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Guo N, Wang X, Xu M, Bai J, Yu H, Le Zhang. PI3K/AKT signaling pathway: Molecular mechanisms and therapeutic potential in depression. Pharmacol Res 2024; 206:107300. [PMID: 38992850 DOI: 10.1016/j.phrs.2024.107300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2024] [Revised: 07/03/2024] [Accepted: 07/05/2024] [Indexed: 07/13/2024]
Abstract
Depression is a serious global mental disorder. Numerous studies have found that depression may be closely related to decreased neurogenesis, neuroinflammation, neurotransmitter imbalance, and synaptic plasticity dysfunction. The pathogenesis of depression is complex and involves multiple signal transduction pathways and molecular changes. The PI3K/AKT pathway is an essential signaling pathways in neurons, which is widely expressed in emotion-related regions of the brain. Therefore, the PI3K/AKT pathway may play a moderating role in mood disorders. However, the role and mechanism of the PI3K/AKT signaling pathway in depression have not been fully described. This review systematically summarized the role of the PI3K/AKT signaling pathway in the pathogenesis of depression and discussed its potential in the treatment of depression. This will help in the treatment of depression and the development of antidepressants.
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Affiliation(s)
- Ningning Guo
- School of Mental Health, Jining Medical University, Jining, China
| | - Xin Wang
- Department of Radiation Therapy, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Muran Xu
- Clinical College, Jining Medical University, Jining, China
| | - Jie Bai
- Medical School, Kunming University of Science and Technology, Kunming, China.
| | - Hao Yu
- School of Mental Health, Jining Medical University, Jining, China.
| | - Le Zhang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China.
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Chen HS, Wang F, Chen JG. Epigenetic mechanisms in depression: Implications for pathogenesis and treatment. Curr Opin Neurobiol 2024; 85:102854. [PMID: 38401316 DOI: 10.1016/j.conb.2024.102854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Revised: 02/03/2024] [Accepted: 02/05/2024] [Indexed: 02/26/2024]
Abstract
The risk of depression is influenced by both genetic and environmental factors. It has been suggested that epigenetic mechanisms may mediate the risk of depression following exposure to adverse life events. Epigenetics encompasses stable alterations in gene expression that are controlled through transcriptional, post-transcriptional, translational, or post-translational processes, including DNA modifications, chromatin remodeling, histone modifications, RNA modifications, and non-coding RNA (ncRNA) regulation, without any changes in the DNA sequence. In this review, we explore recent research advancements in the realm of epigenetics concerning depression. Furthermore, we evaluate the potential of epigenetic changes as diagnostic and therapeutic biomarkers for depression.
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Affiliation(s)
- Hong-Sheng Chen
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; The Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation of Hubei Province, Wuhan 430030, China; The Research Center for Depression, Tongji Medical College, Huazhong University of Science, Wuhan 430030, China
| | - Fang Wang
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; The Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation of Hubei Province, Wuhan 430030, China; The Research Center for Depression, Tongji Medical College, Huazhong University of Science, Wuhan 430030, China; The Key Laboratory of Neurological Diseases (HUST), Ministry of Education of China, Wuhan 430030, China
| | - Jian-Guo Chen
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; The Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation of Hubei Province, Wuhan 430030, China; The Research Center for Depression, Tongji Medical College, Huazhong University of Science, Wuhan 430030, China; The Key Laboratory of Neurological Diseases (HUST), Ministry of Education of China, Wuhan 430030, China.
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Lan L, Peng S, Zhang R, He H, Yang Y, Xi B, Zhang J. Serum proteomic biomarker investigation of vascular depression using data-independent acquisition: a pilot study. Front Aging Neurosci 2024; 16:1341374. [PMID: 38384936 PMCID: PMC10879412 DOI: 10.3389/fnagi.2024.1341374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 01/22/2024] [Indexed: 02/23/2024] Open
Abstract
Background Vascular depression (VaD) is a depressive disorder closely associated with cerebrovascular disease and vascular risk factors. It remains underestimated owing to challenging diagnostics and limited information regarding the pathophysiological mechanisms of VaD. The purpose of this study was to analyze the proteomic signatures and identify the potential biomarkers with diagnostic significance in VaD. Methods Deep profiling of the serum proteome of 35 patients with VaD and 36 controls was performed using liquid chromatography-tandem mass spectrometry (LC-MS/MS). Functional enrichment analysis of the quantified proteins was based on Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway, and Reactome databases. Machine learning algorithms were used to screen candidate proteins and develop a protein-based model to effectively distinguish patients with VaD. Results There were 29 up-regulated and 31 down-regulated proteins in the VaD group compared to the controls (|log2FC| ≥ 0.26, p ≤ 0.05). Enrichment pathways analyses showed that neurobiological processes related to synaptic vesicle cycle and axon guidance may be dysregulated in VaD. Extrinsic component of synaptic vesicle membrane was the most enriched term in the cellular components (CC) terms. 19 candidate proteins were filtered for further modeling. A nomogram was developed with the combination of HECT domain E3 ubiquitin protein ligase 3 (HECTD3), Nidogen-2 (NID2), FTO alpha-ketoglutarate-dependent dioxygenase (FTO), Golgi membrane protein 1 (GOLM1), and N-acetylneuraminate lyase (NPL), which could be used to predict VaD risk with favorable efficacy. Conclusion This study offers a comprehensive and integrated view of serum proteomics and contributes to a valuable proteomics-based diagnostic model for VaD.
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Affiliation(s)
- Liuyi Lan
- Department of Neurology, Zhongnan Hospital, Wuhan University, Wuhan, China
| | - Sisi Peng
- Department of Neuropsychology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Ran Zhang
- Department of Neurology, Zhongnan Hospital, Wuhan University, Wuhan, China
| | - Haoying He
- Department of Neurology, Zhongnan Hospital, Wuhan University, Wuhan, China
| | - Yong Yang
- SpecAlly Life Technology Co., Ltd., Wuhan, China
| | - Bing Xi
- SpecAlly Life Technology Co., Ltd., Wuhan, China
| | - Junjian Zhang
- Department of Neurology, Zhongnan Hospital, Wuhan University, Wuhan, China
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He J, Xie J, Zhou G, Jia C, Han D, Li D, Wei J, Li Y, Huang R, Li C, Wang B, Wei C, Su Q, Lai K, Wei G. Active Fraction of Polyrhachis Vicina Roger (AFPR) Ameliorate Depression Induced Inflammation Response by FTO/miR-221-3p/SOCS1 Axis. J Inflamm Res 2023; 16:6329-6348. [PMID: 38152570 PMCID: PMC10752236 DOI: 10.2147/jir.s439912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Accepted: 12/12/2023] [Indexed: 12/29/2023] Open
Abstract
Purpose Neuroinflammation is a significant etiological factor in the development of depression. Traditional Chinese medicine (TCM) has demonstrated notable efficacy in the treatment of inflammation. Our previous study surfaces that the active fraction of Polyrhachis vicina Roger (AFPR) has antidepressant and anti-neuroinflammatory effects, but the specific mechanisms remain to be elucidated. The objective of this study was to examine the impact of AFPR on inflammation in depression via the FTO/miR-221-3p/SOCS1 axis. Methods Chronic unpredictable stress (CUMS)-induced rats and LPS-induced BV2 cells were employed to simulate depression models in vivo and in vitro. The levels of inflammatory factors were detected using the ELISA assay. The expression of genes and proteins was detected using qRT-PCR and Western blot. Gene interactions were detected using the dual luciferase reporter gene. Protein-RNA interactions were investigated using RNA methylation immunoprecipitation (MeRIP) and RNA immunoprecipitation (RIP). Neuroinflammation in the brain was examined through H&E staining, while neuronal apoptosis was assessed using TUNEL staining. Results The results showed that AFPR ameliorated depression induced inflammation by increasing SOCS1 expression. However, SOCS1 was identified as a target of miR-221-3p. Overexpression of miR-221-3p decreased the expression of SOCS1 and increased the levels of NF-κB, IL-7, and IL-6. In addition, we found that miR-221-3p was regulated by FTO-mediated m6A modification through MeRIP and RIP experiments. Interference with miR-221-3p and overexpression of FTO resulted in increased SOCS1 gene expression and decreased levels of NF-κB, IL-7, and IL-6, which were reversed by AFPR. Conclusion AFPR inhibits the maturation of pri-miR-221-3p through FTO-mediated m6A modification, reduces the production of miR-221-3p, increases the expression of SOCS1, and reduces the level of inflammation, thereby improving depressive symptoms.
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Affiliation(s)
- Junhui He
- Department of Pharmacology, Key Laboratory of Quality Standards, Guangxi Institute of Chinese Medicine & Pharmaceutical Science, Nanning, 530022, People’s Republic of China
| | - Jiaxiu Xie
- Department of Pharmacology, Key Laboratory of Quality Standards, Guangxi Institute of Chinese Medicine & Pharmaceutical Science, Nanning, 530022, People’s Republic of China
| | - Guili Zhou
- Department of Pharmacology, Guangxi Medical University, Nanning, Guangxi, 530021, People’s Republic of China
| | - Chunlian Jia
- Department of Pharmacology, Guangxi Medical University, Nanning, Guangxi, 530021, People’s Republic of China
| | - Dongbo Han
- Department of Pharmacology, Guangxi Medical University, Nanning, Guangxi, 530021, People’s Republic of China
| | - Dongmei Li
- Department of Pharmacology, Key Laboratory of Quality Standards, Guangxi Institute of Chinese Medicine & Pharmaceutical Science, Nanning, 530022, People’s Republic of China
| | - Jie Wei
- Department of Pharmacology, Key Laboratory of Quality Standards, Guangxi Institute of Chinese Medicine & Pharmaceutical Science, Nanning, 530022, People’s Republic of China
| | - Yi Li
- Department of Pharmacology, Key Laboratory of Quality Standards, Guangxi Institute of Chinese Medicine & Pharmaceutical Science, Nanning, 530022, People’s Republic of China
| | - Renshan Huang
- Department of Pharmacology, Key Laboratory of Quality Standards, Guangxi Institute of Chinese Medicine & Pharmaceutical Science, Nanning, 530022, People’s Republic of China
| | - Chunlian Li
- Department of Pharmacology, Key Laboratory of Quality Standards, Guangxi Institute of Chinese Medicine & Pharmaceutical Science, Nanning, 530022, People’s Republic of China
| | - Bo Wang
- Guangxi Shuangyi Pharmaceutical Co., Ltd, Nanning, Guangxi, 530021, People’s Republic of China
| | - Chao Wei
- Guangxi Shuangyi Pharmaceutical Co., Ltd, Nanning, Guangxi, 530021, People’s Republic of China
| | - Qibiao Su
- College of Health Science, Guangdong Pharmaceutical University, Guangzhou, 510006, People’s Republic of China
| | - Kedao Lai
- Department of Pharmacology, Key Laboratory of Quality Standards, Guangxi Institute of Chinese Medicine & Pharmaceutical Science, Nanning, 530022, People’s Republic of China
| | - Guining Wei
- Department of Pharmacology, Key Laboratory of Quality Standards, Guangxi Institute of Chinese Medicine & Pharmaceutical Science, Nanning, 530022, People’s Republic of China
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Chang R, Zhu S, Peng J, Lang Z, Zhou X, Liao H, Zou J, Zeng P, Tan S. The hippocampal FTO-BDNF-TrkB pathway is required for novel object recognition memory reconsolidation in mice. Transl Psychiatry 2023; 13:349. [PMID: 37963912 PMCID: PMC10645923 DOI: 10.1038/s41398-023-02647-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 10/24/2023] [Accepted: 11/01/2023] [Indexed: 11/16/2023] Open
Abstract
Memory reconsolidation refers to the process by which the consolidated memory was restored after reactivation (RA). Memory trace becomes labile after reactivation and inhibition of memory reconsolidation may disrupt or update the original memory trace, which provided a new strategy for the treatment of several psychiatric diseases, such as drug addiction and post-traumatic stress disorder. Fat mass and obesity-associated gene (FTO) is a novel demethylase of N6-methyladenosine (m6A) and it has been intensively involved in learning and memory. However, the role of FTO in memory reconsolidation has not been determined. In the present study, the function of FTO in memory reconsolidation was investigated in the novel object recognition (NOR) model in mice. The results showed that RA of NOR memory increased hippocampal FTO expression in a time-dependent manner, while FTO inhibitor meclofenamic acid (MA) injected immediately, but not 6 h after RA disrupted NOR memory reconsolidation. MA downregulated BDNF expression during NOR memory reconsolidation in the hippocampus, while the TrkB agonist 7,8-Dihydroxyflavone (7,8-DHF) reversed the disruptive effects of MA on NOR memory reconsolidation. Furthermore, overexpression of FTO increased BDNF expression via decreasing mRNA m6A in HT22 cells. Taken together, these results indicate that FTO may up-regulate the BDNF-TrkB pathway to promote NOR memory reconsolidation through m6A modification.
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Affiliation(s)
- Rui Chang
- Department of Histology and Embryology, School of Basic Medicine, Hengyang Medical School, University of South China, Hengyang, China
| | - Shanshan Zhu
- Department of Histology and Embryology, School of Basic Medicine, Hengyang Medical School, University of South China, Hengyang, China
| | - Jionghong Peng
- Department of Histology and Embryology, School of Basic Medicine, Hengyang Medical School, University of South China, Hengyang, China
| | - Zhenyi Lang
- Department of Histology and Embryology, School of Basic Medicine, Hengyang Medical School, University of South China, Hengyang, China
| | - Xinyu Zhou
- Department of Histology and Embryology, School of Basic Medicine, Hengyang Medical School, University of South China, Hengyang, China
| | - Hailin Liao
- Department of Histology and Embryology, School of Basic Medicine, Hengyang Medical School, University of South China, Hengyang, China
| | - Ju Zou
- Department of Histology and Embryology, School of Basic Medicine, Hengyang Medical School, University of South China, Hengyang, China
| | - Peng Zeng
- Department of Histology and Embryology, School of Basic Medicine, Hengyang Medical School, University of South China, Hengyang, China.
| | - Sijie Tan
- Department of Histology and Embryology, School of Basic Medicine, Hengyang Medical School, University of South China, Hengyang, China.
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