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He X, Wang Z, Ge Q, Sun S, Li R, Wang B. Lactylation of nuclear receptor coactivator 4 promotes ferritinophagy and glycolysis of neuronal cells after cerebral ischemic injury. Neuroreport 2024; 35:895-903. [PMID: 39166386 DOI: 10.1097/wnr.0000000000002080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/22/2024]
Abstract
Ischemic stroke remains a major cause of disability and mortality. Nuclear receptor coactivator 4 (NCOA4)-mediated ferritinophagy is involved in cerebral ischemic injury. Additionally, lactylation regulates the progression of ischemia injury. This study aimed to investigate the impact of NCOA4 on ferritinophagy and glycolysis of hippocampal neuron cells and its lactylation modification. Middle cerebral artery occlusion (MCAO) mouse and oxygen-glucose deprivation (OGD)-treated HT22 cell models were generated. Ferritinophagy was evaluated via detecting ferrous iron (Fe 2+ ), glutathione, malondialdehyde, and protein levels. Glycolysis was assessed by examining the glucose consumption, lactate production, and extracellular acidification rate. The lactylation was evaluated using immunoprecipitation and immunoblotting. Brain injury in vivo was analyzed by measuring brain infarct and neurological function. The results showed that NCOA4 expression was increased in the blood of patients with acute ischemia stroke, the peri-infarct region of the brain in MCAO mice (increased percentage: 142.11%) and OGD-treated cells (increased percentage: 114.70%). Knockdown of NCOA4 inhibited ferritinophagy and glycolysis of HT22 cells induced by OGD. Moreover, OGD promoted the lactylation of NCOA4 at lysine (K)450 sites, which enhanced NCOA4 protein stability. Additionally, interfering with NCOA4 attenuated brain infarction and neurological dysfunction in MCAO mice. Lactylation of NCOA4 at K450 sites promotes ferritinophagy and glycolysis of hippocampal neuron cells, thereby accelerating cerebral ischemic injury. These findings suggest a novel pathogenesis of ischemic stroke.
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Affiliation(s)
- Xiaoyin He
- Department of Neurology, The Air Force Hospital of Southern Theater Command, PLA, Guangzhou, China
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Zhang W, Li S, Yun HJ, Yu W, Shi W, Gao C, Xu J, Yang Y, Qin L, Ding Y, Jin K, Liu F, Ji X, Ren C. Hypoxic postconditioning drives protective microglial responses and ameliorates white matter injury after ischemic stroke. CNS Neurosci Ther 2024; 30:e14346. [PMID: 37435771 PMCID: PMC10848070 DOI: 10.1111/cns.14346] [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] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 06/05/2023] [Accepted: 06/19/2023] [Indexed: 07/13/2023] Open
Abstract
BACKGROUND Ischemic stroke (IS) is a cerebrovascular disease with high incidence and mortality. White matter repair plays an important role in the long-term recovery of neurological function after cerebral ischemia. Neuroprotective microglial responses can promote white matter repair and protect ischemic brain tissue. AIMS The aim of this study was to investigate whether hypoxic postconditioning (HPC) can promote white matter repair after IS, and the role and mechanism of microglial polarization in white matter repair after HPC treatment. MATERIALS & METHODS Adult male C57/BL6 mice were randomly divided into three groups: Sham group (Sham), MCAO group (MCAO), and hypoxic postconditioning group (HPC). HPC group were subjected to 45 min of transient middle cerebral artery occlusion (MCAO) immediately followed by 40 min of HPC. RESULTS The results showed that HPC reduced the proinflammatory level of immune cells. Furthermore, HPC promoted the transformation of microglia to anti-inflammatory phenotype on the third day after the procedure. HPC promoted the proliferation of oligodendrocyte progenitors and increased the expression of myelination-related proteins on the 14th day. On the 28th day, HPC increased the expression of mature oligodendrocytes, which enhanced myelination. At the same time, the motor neurological function of mice was restored. DISCUSSION During the acute phase of cerebral ischemia, the function of proinflammatory immune cells was enhanced, long-term white matter damage was aggravated, and motor sensory function was decreased. CONCLUSION HPC promotes protective microglial responses and white matter repair after MCAO, which may be related to the proliferation and differentiation of oligodendrocytes.
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Affiliation(s)
- Wei Zhang
- Beijing Key Laboratory of Hypoxia Translational Medicine, Xuanwu HospitalCapital Medical UniversityBeijingChina
| | - Sijie Li
- Beijing Key Laboratory of Hypoxia Translational Medicine, Xuanwu HospitalCapital Medical UniversityBeijingChina
| | - Ho Jun Yun
- Department of NeurosurgeryWayne State University School of MedicineDetroitMichiganUSA
| | - Wantong Yu
- Beijing Key Laboratory of Hypoxia Translational Medicine, Xuanwu HospitalCapital Medical UniversityBeijingChina
- Department of Neurology, Xuanwu HospitalCapital Medical UniversityBeijingChina
| | - Wenjie Shi
- Beijing Key Laboratory of Hypoxia Translational Medicine, Xuanwu HospitalCapital Medical UniversityBeijingChina
| | - Chen Gao
- Beijing Key Laboratory of Hypoxia Translational Medicine, Xuanwu HospitalCapital Medical UniversityBeijingChina
| | - Jun Xu
- Beijing Key Laboratory of Hypoxia Translational Medicine, Xuanwu HospitalCapital Medical UniversityBeijingChina
- Center of Stroke, Beijing Institute for Brain DisorderCapital Medical UniversityBeijingChina
| | - Yu Yang
- Beijing Key Laboratory of Hypoxia Translational Medicine, Xuanwu HospitalCapital Medical UniversityBeijingChina
- School of Chinese MedicineBeijing University of Chinese MedicineBeijingChina
| | - Linhui Qin
- Beijing Key Laboratory of Hypoxia Translational Medicine, Xuanwu HospitalCapital Medical UniversityBeijingChina
| | - Yuchuan Ding
- Department of NeurosurgeryWayne State University School of MedicineDetroitMichiganUSA
| | - Kunlin Jin
- Department of Pharmacology and NeuroscienceUniversity of North Texas Health Science CenterFort WorthTexasUSA
| | - Fengyong Liu
- Department of Interventional Radiology, Senior Department of OncologyFifth Medical Center of PLA General HospitalBeijingChina
| | - Xunming Ji
- Beijing Key Laboratory of Hypoxia Translational Medicine, Xuanwu HospitalCapital Medical UniversityBeijingChina
- Center of Stroke, Beijing Institute for Brain DisorderCapital Medical UniversityBeijingChina
| | - Changhong Ren
- Beijing Key Laboratory of Hypoxia Translational Medicine, Xuanwu HospitalCapital Medical UniversityBeijingChina
- Center of Stroke, Beijing Institute for Brain DisorderCapital Medical UniversityBeijingChina
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Yuan H, Liu J, Gu Y, Ji X, Nan G. Intermittent hypoxia conditioning as a potential prevention and treatment strategy for ischemic stroke: Current evidence and future directions. Front Neurosci 2022; 16:1067411. [PMID: 36507357 PMCID: PMC9732261 DOI: 10.3389/fnins.2022.1067411] [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: 10/11/2022] [Accepted: 11/11/2022] [Indexed: 11/26/2022] Open
Abstract
Ischemic stroke (IS) is the leading cause of disability and death worldwide. Owing to the aging population and unhealthy lifestyles, the incidence of cerebrovascular disease is high. Vascular risk factors include hypertension, diabetes, dyslipidemia, and obesity. Therefore, in addition to timely and effective reperfusion therapy for IS, it is crucial to actively control these risk factors to reduce the incidence and recurrence rates of IS. Evidence from human and animal studies suggests that moderate intermittent hypoxia (IH) exposure is a promising therapeutic strategy to ameliorate common vascular risk factors and comorbidities. Given the complex pathophysiological mechanisms underlying IS, effective treatment must focus on reducing injury in the acute phase and promoting repair in the recovery phase. Therefore, this review discusses the preclinical perspectives on IH conditioning as a potential treatment for neurovascular injury and highlights IH pre and postconditioning strategies for IS. Hypoxia conditioning reduces brain injury by increasing resistance to acute ischemic and hypoxic stress, exerting neuroprotective effects, and promoting post-injury repair and regeneration. However, whether IH produces beneficial effects depends not only on the hypoxic regimen but also on inter-subject differences. Therefore, we discuss the factors that may influence the effectiveness of IH treatment, including age, sex, comorbidities, and circadian rhythm, which can be used to help identify the optimal intervention population and treatment protocols for more accurate, individualized clinical translation. In conclusion, IH conditioning as a non-invasive, non-pharmacological, systemic, and multi-targeted intervention can not only reduce brain damage after stroke but can also be applied to the prevention and functional recovery of IS, providing brain protection at different stages of the disease. It represents a promising therapeutic strategy. For patients with IS and high-risk groups, IH conditioning is expected to develop as an adjunctive clinical treatment option to reduce the incidence, recurrence, disability, and mortality of IS and to reduce disease burden.
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Affiliation(s)
- Honghua Yuan
- Department of Neurology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Jia Liu
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Beijing Advanced Innovation Center for Big Data-based Precision Medicine, Capital Medical University, Beijing, China
| | - Yuhang Gu
- Department of Neurology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Xunming Ji
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Beijing Advanced Innovation Center for Big Data-based Precision Medicine, Capital Medical University, Beijing, China,Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China,*Correspondence: Xunming Ji,
| | - Guangxian Nan
- Department of Neurology, China-Japan Union Hospital of Jilin University, Changchun, China,Guangxian Nan,
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Li G, Guan Y, Gu Y, Guo M, Ma W, Shao Q, Liu J, Ji X. Intermittent hypoxic conditioning restores neurological dysfunction of mice induced by long-term hypoxia. CNS Neurosci Ther 2022; 29:202-215. [PMID: 36401601 PMCID: PMC9804074 DOI: 10.1111/cns.13996] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 09/18/2022] [Accepted: 09/20/2022] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND Central nervous system diseases are associated with hypoxia, which usually cause irreversible nerve damage, but the underlying mechanism is unclear and effective intervention strategies are lacking. This study was designed to explore the mechanism and treatment strategy of hypoxia-induced nerve injury. METHODS In this study, 13% O2 was used to treat mice for 0, 1, 3 7, and 14 days, Morris water maze and other animal behavior experiments were used to evaluate the neurological function of mice. TUNEL, BrdU, PCNA, DCX, and SOX2 staining were used to observe the apoptosis and proliferation of mouse neurons. RT-PCR and Iba1 staining were used to evaluate the release of inflammatory factors IL-1β, IL-6, and TNF-α and the activation of microglia. RESULTS Short-term hypoxia promotes neurogenesis, while long-term hypoxia inhibits neurogenesis. The changes in hypoxia-induced neurogenesis were positively correlated with neurological functions, but negatively correlated with apoptosis. Moreover, intermittent hypoxic conditioning restored long-term hypoxia-induced neurological dysfunction by promoting neural stem cell generation and inhibiting the release of inflammatory factors IL-1β, IL-6, and TNF-α and the activation of microglia. CONCLUSION Hypoxia promoted neurogenesis in a time-dependent manner, and intermittent hypoxic conditioning exerted a neuroprotective effect through promoting neural stem cell generation and suppressing inflammation induced by long-term hypoxia stress, which provided a novel concept to develop a treatment for hypoxia-related brain injury.
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Affiliation(s)
- Gaifen Li
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Beijing Advanced Innovation Center for Big Data‐based Precision MedicineCapital Medical UniversityBeijingChina,Department of Neurosurgery, Xuanwu HospitalCapital Medical UniversityBeijingChina
| | - Yuying Guan
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Beijing Advanced Innovation Center for Big Data‐based Precision MedicineCapital Medical UniversityBeijingChina,Department of Neurosurgery, Xuanwu HospitalCapital Medical UniversityBeijingChina
| | - Yakun Gu
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Beijing Advanced Innovation Center for Big Data‐based Precision MedicineCapital Medical UniversityBeijingChina
| | - Mengyuan Guo
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Beijing Advanced Innovation Center for Big Data‐based Precision MedicineCapital Medical UniversityBeijingChina
| | - Wei Ma
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Beijing Advanced Innovation Center for Big Data‐based Precision MedicineCapital Medical UniversityBeijingChina
| | - Qianqian Shao
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Beijing Advanced Innovation Center for Big Data‐based Precision MedicineCapital Medical UniversityBeijingChina
| | - Jia Liu
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Beijing Advanced Innovation Center for Big Data‐based Precision MedicineCapital Medical UniversityBeijingChina
| | - Xunming Ji
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Beijing Advanced Innovation Center for Big Data‐based Precision MedicineCapital Medical UniversityBeijingChina,Department of Neurosurgery, Xuanwu HospitalCapital Medical UniversityBeijingChina
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Li H, Li S, Ren C, Gao C, Li N, Wang C, Wang L, Zhao W, Ji X, Jin K. Hypoxic postconditioning promotes neurogenesis by modulating the metabolism of neural stem cells after cerebral ischemia. Exp Neurol 2022; 347:113871. [PMID: 34563509 DOI: 10.1016/j.expneurol.2021.113871] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 08/25/2021] [Accepted: 09/20/2021] [Indexed: 12/30/2022]
Abstract
Ischemic stroke is one of the most lethal and severely disabling diseases that seriously affects human health and quality of life. The maintenance of self-renewal and differentiation of neural stem cells are closely related to metabolism. This study aimed to investigate whether hypoxic postconditioning (HPC) could promote neurogenesis after ischemic stroke, and to investigate the role of neuronal stem cell metabolism in HPC-induced neuroprotection. Male C57BL/6 mice were subjected to transient middle cerebral artery occlusion (MCAO), and HPC was performed for 3 h per day. Immunofluorescence staining was used to assess neurogenesis. The cell line NE-4C was used to elucidate the proliferation of neuronal stem cells in 21% O2 or 8% O2. HPC promoted the recovery of neurological function in mice on day 14. HPC promoted neuronal precursor proliferation in the subventricular zone (SVZ) on day 7 and enhanced neuronal precursor migration in the basal ganglia and cortex on day 14. Fatty acid oxidation (FAO) and glycolysis of neural stem cells in the SVZ changed after MCAO with or without HPC. HPC promoted the proliferation of NE-4C stem cells, decreased FAO and increased glycolysis. All these beneficial effects of HPC were ablated by the application of an FAO activator or a glycolysis inhibitor. In conclusion, cerebral ischemia modulated the FAO and glycolysis of neural stem cells. HPC promoted the proliferation and migration of neural stem cells after MCAO, and these effects may be related to the regulation of metabolism, including FAO and glycolysis.
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Affiliation(s)
- Haiyan Li
- Beijing Key Laboratory of Hypoxia Translational Medicine, Xuanwu Hospital, Capital Medical University, Center of Stroke, Beijing Institute of Brain Disorder, Capital Medical University, Beijing, China; Center of Stroke, Beijing Institute of Brain Disorder, Capital Medical University, Beijing, China
| | - Sijie Li
- Beijing Key Laboratory of Hypoxia Translational Medicine, Xuanwu Hospital, Capital Medical University, Center of Stroke, Beijing Institute of Brain Disorder, Capital Medical University, Beijing, China; Center of Stroke, Beijing Institute of Brain Disorder, Capital Medical University, Beijing, China
| | - Changhong Ren
- Beijing Key Laboratory of Hypoxia Translational Medicine, Xuanwu Hospital, Capital Medical University, Center of Stroke, Beijing Institute of Brain Disorder, Capital Medical University, Beijing, China; Center of Stroke, Beijing Institute of Brain Disorder, Capital Medical University, Beijing, China
| | - Chen Gao
- Center of Stroke, Beijing Institute of Brain Disorder, Capital Medical University, Beijing, China
| | - Ning Li
- Beijing Key Laboratory of Hypoxia Translational Medicine, Xuanwu Hospital, Capital Medical University, Center of Stroke, Beijing Institute of Brain Disorder, Capital Medical University, Beijing, China; Center of Stroke, Beijing Institute of Brain Disorder, Capital Medical University, Beijing, China
| | - Chunxiu Wang
- Department of Evidence-based Medicine, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Lin Wang
- Beijing Key Laboratory of Hypoxia Translational Medicine, Xuanwu Hospital, Capital Medical University, Center of Stroke, Beijing Institute of Brain Disorder, Capital Medical University, Beijing, China; Center of Stroke, Beijing Institute of Brain Disorder, Capital Medical University, Beijing, China
| | - Wenbo Zhao
- Beijing Key Laboratory of Hypoxia Translational Medicine, Xuanwu Hospital, Capital Medical University, Center of Stroke, Beijing Institute of Brain Disorder, Capital Medical University, Beijing, China; Center of Stroke, Beijing Institute of Brain Disorder, Capital Medical University, Beijing, China
| | - Xunming Ji
- Beijing Key Laboratory of Hypoxia Translational Medicine, Xuanwu Hospital, Capital Medical University, Center of Stroke, Beijing Institute of Brain Disorder, Capital Medical University, Beijing, China; Center of Stroke, Beijing Institute of Brain Disorder, Capital Medical University, Beijing, China.
| | - Kunlin Jin
- Department of Pharmacology & Neuroscience, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
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Wang Q, Wills M, Li F, Geng X, Ding Y. Remote ischemic conditioning with exercise (RICE) promotes functional rehabilitation following ischemic stroke. Neurol Res 2021; 43:874-883. [PMID: 34151756 DOI: 10.1080/01616412.2021.1939489] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Objective: Exercise is an essential rehabilitative strategy after stroke butits implementation is limited as its very early use can exacerbate damage and is restricted by patient disability. Remote Ischemic Conditioning (RIC) is a safe alternative for post-stroke neuroprotetion. The present study investigated the neurorehabilitative benefits of early RIC followed by exercise (RICE) therapy.Methods: 48 adult male Sprague-Dawley rats were divided into groups: 1) sham, 2) stroke, 3) stroke with RICE at day 3 (RIC 6 hours after reperfusion followed by exercise days 3 to 28), 4) stroke with exercise at day 3 (exercise days 3 to 28), and 5) stroke with RICE at day 1 (RIC 6 hours after reperfusion followed by exercise days 1 to 28), 6) stroke with exercise at day 1 (exercise days 1 to 28 after reperfusion). Long-term functional outcomes were determined by grid walk, rota-rod, adhesive tape touch, and Morris water maze. Levels of mRNA and proteins of neuroplasticity, synaptogenesis, and angiogenesis, were determined.Results: As compared to exercise only, animals that underwent RICE had significant improvements in functional outcomes after stroke. These improvements were most significant in groups that had the later initiation of exercise. In addition, all treatment groups showed significant increases in mRNA and protein expression of the target molecules for neuroplasticity, synaptogenesis, and angiogenesis, while further significant increases were observed after RICE following ischemic stroke.Conclusions: RICE, a novel therapy that supplements RIC prior to exercise, is superiorly effective in inducing rehabilitation after stroke as compared to the traditional exercise monotherapy rehabilitation in rats with ischemic brain injury.
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Affiliation(s)
- Qingzhu Wang
- Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Melissa Wills
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA
| | - Fengwu Li
- Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Xiaokun Geng
- Beijing Luhe Hospital, Capital Medical University, Beijing, China.,Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA.,Department of Neurology, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Yuchuan Ding
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA.,Department of Research & Development Center, John D. Dingell VA Medical Center, Detroit, MI, USA
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