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Xu Y, Teng X, Wei M, Liu Y. TREK-1 channel as a therapeutic target for dexmedetomidine-mediated neuroprotection in cerebral ischemia. Neurogenetics 2024:10.1007/s10048-024-00772-w. [PMID: 38976083 DOI: 10.1007/s10048-024-00772-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2024] [Accepted: 07/02/2024] [Indexed: 07/09/2024]
Abstract
Our objective is to explore the protective effect of Dexmedetomidine on brain apoptosis and its mechanism through TREK-1 pathway. Forty male Sprague-Dawley rats were allocated into four groups: Sham, Cerebral Ischemia/Reperfusion Injury (CIRI), 50 µg/kg Dex, and 100 µg/kg Dex. A rat model of middle cerebral artery occlusion (MCAO) was employed to simulate cerebral embolism. Primary cortical neurons were exposed to Dex for 48 h, with some receiving additional treatment with 100 µM yohimbine hydrochloride (YOH) or TREK-1 small interfering RNA (siRNA). Neuronal damage was assessed using hematoxylin and eosin (HE) staining. Cell viability and apoptosis were measured by Cell Counting Kit-8 (CCK8) and flow cytometry, respectively. Protein and gene expression levels of Bcl-2, Bax, and TREK-1 were determined by Western blot and real-time polymerase chain reaction (PCR). Histopathological changes revealed that Dex treatment at both 50 µg/kg and 100 µg/kg significantly mitigated neuronal damage compared to the CIRI group. YOH treatment and Trek1 siRNA significantly reduced cell viability (p < 0.05). The mRNA expression and protein levels of TREK-1 and Bax were remarkably increased, while mRNA expression and protein levels of Bcl-2 was seriously decreased after CIRI modeling. In contrast, Dex treatment at both concentrations led to decreased TREK-1 and Bax expression and increased Bcl-2 expression in primary cortical neurons. Addition of 100 µM YOH and Trek1 siRNA reversed the effects of Dex on apoptosis-related genes (p < 0.05). Dex exerts neuroprotective effects through the TREK-1 pathway in vivo and in vitro.
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Affiliation(s)
- Yang Xu
- Department of Anesthesiology, Cancer Hospital Affiliated to Harbin Medical University, 150 Haping Road (Street), NanGang District, Harbin, 150081, Heilongjiang Province, PR China
| | - XiaoDan Teng
- Department of Anesthesiology, Cancer Hospital Affiliated to Harbin Medical University, 150 Haping Road (Street), NanGang District, Harbin, 150081, Heilongjiang Province, PR China
| | - Ming Wei
- Department of Anesthesiology, Cancer Hospital Affiliated to Harbin Medical University, 150 Haping Road (Street), NanGang District, Harbin, 150081, Heilongjiang Province, PR China
| | - Yang Liu
- Department of Anesthesiology, Cancer Hospital Affiliated to Harbin Medical University, 150 Haping Road (Street), NanGang District, Harbin, 150081, Heilongjiang Province, PR China.
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2
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Li J, Zhang Y, Tang R, Liu H, Li X, Lei W, Chen J, Jin Z, Tang J, Wang Z, Yang Y, Wu X. Glycogen synthase kinase-3β: A multifaceted player in ischemia-reperfusion injury and its therapeutic prospects. J Cell Physiol 2024. [PMID: 38962880 DOI: 10.1002/jcp.31335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 05/05/2024] [Accepted: 05/22/2024] [Indexed: 07/05/2024]
Abstract
Ischemia-reperfusion injury (IRI) results in irreversible metabolic dysfunction and structural damage to tissues or organs, posing a formidable challenge in the field of organ implantation, cardiothoracic surgery, and general surgery. Glycogen synthase kinase-3β (GSK-3β) a multifunctional serine/threonine kinase, is involved in a variety of biological processes, including cell proliferation, apoptosis, and immune response. Phosphorylation of its tyrosine 216 and serine 9 sites positively and negatively regulates the activation and inactivation of the enzyme. Significantly, inhibition or inactivation of GSK-3β provides protection against IRI, making it a viable target for drug development. Though numerous GSK-3β inhibitors have been identified to date, the development of therapeutic treatments remains a considerable distance away. In light of this, this review summarizes the complicated network of GSK-3β roles in IRI. First, we provide an overview of GSK-3β's basic background. Subsequently, we briefly review the pathological mechanisms of GSK-3β in accelerating IRI, and highlight the latest progress of GSK-3β in multiorgan IRI, encompassing heart, brain, kidney, liver, and intestine. Finally, we discuss the current development of GSK-3β inhibitors in various organ IRI, offering a thorough and insightful reference for GSK-3β as a potential target for future IRI therapy.
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Affiliation(s)
- Jiayan Li
- Xi'an Key Laboratory of Innovative Drug Research for Heart Failure, Northwest University First Hospital, Faculty of Life Sciences and Medicine, Northwest University, Xi'an, China
- Faculty of Life Sciences and Medicine, Northwest University, Xi'an, China
| | - Yan Zhang
- Xi'an Key Laboratory of Innovative Drug Research for Heart Failure, Northwest University First Hospital, Faculty of Life Sciences and Medicine, Northwest University, Xi'an, China
- Faculty of Life Sciences and Medicine, Northwest University, Xi'an, China
| | - Ran Tang
- Xi'an Key Laboratory of Innovative Drug Research for Heart Failure, Northwest University First Hospital, Faculty of Life Sciences and Medicine, Northwest University, Xi'an, China
- Faculty of Life Sciences and Medicine, Northwest University, Xi'an, China
| | - Hui Liu
- Xi'an Key Laboratory of Innovative Drug Research for Heart Failure, Northwest University First Hospital, Faculty of Life Sciences and Medicine, Northwest University, Xi'an, China
- Faculty of Life Sciences and Medicine, Northwest University, Xi'an, China
| | - Xiayun Li
- Xi'an Key Laboratory of Innovative Drug Research for Heart Failure, Northwest University First Hospital, Faculty of Life Sciences and Medicine, Northwest University, Xi'an, China
- Faculty of Life Sciences and Medicine, Northwest University, Xi'an, China
| | - Wangrui Lei
- Xi'an Key Laboratory of Innovative Drug Research for Heart Failure, Northwest University First Hospital, Faculty of Life Sciences and Medicine, Northwest University, Xi'an, China
- Faculty of Life Sciences and Medicine, Northwest University, Xi'an, China
| | - Junmin Chen
- Xi'an Key Laboratory of Innovative Drug Research for Heart Failure, Northwest University First Hospital, Faculty of Life Sciences and Medicine, Northwest University, Xi'an, China
- Faculty of Life Sciences and Medicine, Northwest University, Xi'an, China
| | - Zhenxiao Jin
- Department of Cardiovascular Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Jiayou Tang
- Department of Cardiovascular Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Zheng Wang
- Department of Cardiothoracic Surgery, Central Theater Command General Hospital of Chinese People's Liberation Army, Wuhan, China
| | - Yang Yang
- Xi'an Key Laboratory of Innovative Drug Research for Heart Failure, Northwest University First Hospital, Faculty of Life Sciences and Medicine, Northwest University, Xi'an, China
- Faculty of Life Sciences and Medicine, Northwest University, Xi'an, China
| | - Xiaopeng Wu
- Xi'an Key Laboratory of Innovative Drug Research for Heart Failure, Northwest University First Hospital, Faculty of Life Sciences and Medicine, Northwest University, Xi'an, China
- Faculty of Life Sciences and Medicine, Northwest University, Xi'an, China
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Yilmaz U, Tanbek K, Gul S, Koc A, Gul M, Sandal S. Intracerebroventricular BDNF infusion may reduce cerebral ischemia/reperfusion injury by promoting autophagy and suppressing apoptosis. J Cell Mol Med 2024; 28:e18246. [PMID: 38520223 PMCID: PMC10960178 DOI: 10.1111/jcmm.18246] [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: 11/25/2023] [Revised: 02/18/2024] [Accepted: 03/04/2024] [Indexed: 03/25/2024] Open
Abstract
Here, it was aimed to investigate the effects of intracerebroventricular (ICV) Brain Derived Neurotrophic Factor (BDNF) infusion for 7 days following cerebral ischemia (CI) on autophagy in neurons in the penumbra. Focal CI was created by the occlusion of the right middle cerebral artery. A total of 60 rats were used and divided into 4 groups as Control, Sham CI, CI and CI + BDNF. During the 7-day reperfusion period, aCSF (vehicle) was infused to Sham CI and CI groups, and BDNF infusion was administered to the CI + BDNF group via an osmotic minipump. By the end of the 7th day of reperfusion, Beclin-1, LC3, p62 and cleaved caspase-3 protein levels in the penumbra area were evaluated using Western blot and immunofluorescence. BDNF treatment for 7 days reduced the infarct area after CI, induced the autophagic proteins Beclin-1, LC3 and p62 and suppressed the apoptotic protein cleaved caspase-3. Furthermore, rotarod and adhesive removal test times of BDNF treatment started to improve from the 4th day, and the neurological deficit score from the 5th day. ICV BDNF treatment following CI reduced the infarct area by inducing autophagic proteins Beclin-1, LC3 and p62 and inhibiting the apoptotic caspase-3 protein while its beneficial effects were apparent in neurological tests from the 4th day.
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Affiliation(s)
- Umit Yilmaz
- Department of Physiology, Faculty of MedicineKarabuk UniversityKarabukTurkey
| | - Kevser Tanbek
- Department of Physiology, Faculty of MedicineInonu UniversityMalatyaTurkey
| | - Semir Gul
- Department of Histology and Embryology, Faculty of MedicineInonu UniversityMalatyaTurkey
| | - Ahmet Koc
- Department of Medical Biology and Genetics, Faculty of MedicineInonu UniversityMalatyaTurkey
| | - Mehmet Gul
- Department of Histology and Embryology, Faculty of MedicineInonu UniversityMalatyaTurkey
| | - Suleyman Sandal
- Department of Physiology, Faculty of MedicineInonu UniversityMalatyaTurkey
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Sharma V, Sharma P, Singh TG. Wnt signalling pathways as mediators of neuroprotective mechanisms: therapeutic implications in stroke. Mol Biol Rep 2024; 51:247. [PMID: 38300425 DOI: 10.1007/s11033-023-09202-w] [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: 09/12/2023] [Accepted: 12/30/2023] [Indexed: 02/02/2024]
Abstract
A stroke is a complicated neurological illness that occurs when there is a disruption in the blood flow to the brain. This disruption results in the damage of neurons, which then leads to functional abnormalities. The Wnt signalling pathway, which is already well-known for its important function in development and tissue homeostasis, has recently been recognised as a critical factor in the pathophysiology of stroke. Recent studies have shown the Wnt pathway's roles in stroke-related events. The complex-interactions between the Wnt pathway and stroke emphasising the pathway's contributions to neuro-protection and synaptic plasticity. The Wnt pathway's influence on neuro-genesis and synaptic plasticity underscores its potential for driving stroke recovery and rehabilitation strategies. The current review discusses about the Wnt signalling pathway in brain pathophysiology and stroke with special emphasis on the various pathways involved in the positive and negative modulation of Wnt pathway namely Phosphoinositide 3-kinase (PI3-K), Glycogen synthase kinase-3β (GSK-3β), Mitogen-activated protein kinase (MAPK) and nuclear factor erythroid 2-related factor 2 (Nrf2) pathway.
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Affiliation(s)
- Veerta Sharma
- Chitkara College of Pharmacy, Chitkara University, Rajpura, Punjab, India
| | - Prateek Sharma
- Chitkara College of Pharmacy, Chitkara University, Rajpura, Punjab, India
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Zhang M, Liu Q, Meng H, Duan H, Liu X, Wu J, Gao F, Wang S, Tan R, Yuan J. Ischemia-reperfusion injury: molecular mechanisms and therapeutic targets. Signal Transduct Target Ther 2024; 9:12. [PMID: 38185705 PMCID: PMC10772178 DOI: 10.1038/s41392-023-01688-x] [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: 01/29/2023] [Revised: 08/29/2023] [Accepted: 10/18/2023] [Indexed: 01/09/2024] Open
Abstract
Ischemia-reperfusion (I/R) injury paradoxically occurs during reperfusion following ischemia, exacerbating the initial tissue damage. The limited understanding of the intricate mechanisms underlying I/R injury hinders the development of effective therapeutic interventions. The Wnt signaling pathway exhibits extensive crosstalk with various other pathways, forming a network system of signaling pathways involved in I/R injury. This review article elucidates the underlying mechanisms involved in Wnt signaling, as well as the complex interplay between Wnt and other pathways, including Notch, phosphatidylinositol 3-kinase/protein kinase B, transforming growth factor-β, nuclear factor kappa, bone morphogenetic protein, N-methyl-D-aspartic acid receptor-Ca2+-Activin A, Hippo-Yes-associated protein, toll-like receptor 4/toll-interleukine-1 receptor domain-containing adapter-inducing interferon-β, and hepatocyte growth factor/mesenchymal-epithelial transition factor. In particular, we delve into their respective contributions to key pathological processes, including apoptosis, the inflammatory response, oxidative stress, extracellular matrix remodeling, angiogenesis, cell hypertrophy, fibrosis, ferroptosis, neurogenesis, and blood-brain barrier damage during I/R injury. Our comprehensive analysis of the mechanisms involved in Wnt signaling during I/R reveals that activation of the canonical Wnt pathway promotes organ recovery, while activation of the non-canonical Wnt pathways exacerbates injury. Moreover, we explore novel therapeutic approaches based on these mechanistic findings, incorporating evidence from animal experiments, current standards, and clinical trials. The objective of this review is to provide deeper insights into the roles of Wnt and its crosstalk signaling pathways in I/R-mediated processes and organ dysfunction, to facilitate the development of innovative therapeutic agents for I/R injury.
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Affiliation(s)
- Meng Zhang
- The Collaborative Innovation Center, Jining Medical University, Jining, Shandong, 272067, China
| | - Qian Liu
- Clinical Medical College, Jining Medical University, Jining, Shandong, 272067, China
| | - Hui Meng
- Clinical Medical College, Jining Medical University, Jining, Shandong, 272067, China
| | - Hongxia Duan
- Clinical Medical College, Jining Medical University, Jining, Shandong, 272067, China
| | - Xin Liu
- Second Clinical Medical College, Jining Medical University, Jining, Shandong, 272067, China
| | - Jian Wu
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Fei Gao
- The Collaborative Innovation Center, Jining Medical University, Jining, Shandong, 272067, China
- Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Shijun Wang
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital and Institutes of Biomedical Sciences, Fudan University, Shanghai, China.
| | - Rubin Tan
- Department of Physiology, Basic medical school, Xuzhou Medical University, Xuzhou, 221004, China.
| | - Jinxiang Yuan
- The Collaborative Innovation Center, Jining Medical University, Jining, Shandong, 272067, China.
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Qin Z, Xu Y. Dexmedetomidine Alleviates Brain Ischemia/Reperfusion Injury by Regulating Metastasis-associated Lung Adenocarcinoma Transcript 1/MicroRNA-140-5p/ Nuclear Factor Erythroid-derived 2-like 2 Axis. Protein Pept Lett 2024; 31:116-127. [PMID: 38083898 DOI: 10.2174/0109298665254683231122065717] [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: 05/16/2023] [Revised: 09/27/2023] [Accepted: 10/04/2023] [Indexed: 05/30/2024]
Abstract
BACKGROUND Dexmedetomidine (Dex) is widely used in perioperative anesthesia, and recent studies have reported that it protects organs from ischemia/reperfusion (I/R) injury. OBJECTIVES This study was performed to investigate the role of Dex in alleviating cerebral I/R injury and its regulatory effects on metastasis-associated lung adenocarcinoma transcript 1 (MALAT1)/microRNA-140-5p (miR-140-5p)/nuclear factor erythroid-derived 2-like 2 (Nrf2) axis. METHODS In vivo rat middle cerebral artery occlusion (MCAO) model and in vitro oxygen-glucose deprivation/re-oxygenation (OGD/R)-induced neuronal injury model were constructed. Dex was injected into the animals or used to culture HT22 cells to observe the pharmacological effects. The neurological defect, brain water content, infarct volume of the rats, and neuron viability were evaluated. The levels of reactive oxygen species (ROS), malondialdehyde (MDA), superoxide dismutase (SOD), and catalase (CAT) were detected. Besides, the regulatory effects of Dex on MALAT1, miR-140-5p, and Nrf2 expression levels and regulatory relationships among them were evaluated by quantitative real-time polymerase chain reaction (qRT-PCR), Western blot, and dual- luciferase reporter assay. RESULTS Dex significantly alleviated the neurological injury of rats with MCAO and promoted the viability of neurons. Dex treatment suppressed miR-140-5p expression, but elevated MALAT1 and Nrf2 expressions. MALAT1 knockdown down-regulated Nrf2 expression and promoted oxidative stress in neurons. Additionally, miR-140-5p directly targeted Nrf2, and it also functioned as a downstream target miRNA of MALAT1. CONCLUSION Dex, via regulating MALAT1/miR-140-5p/Nrf2 axis, plays a neuroprotective role against I/R-induced brain injury.
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Affiliation(s)
- Zhigang Qin
- Department of Anesthesiology, TaiKang Tongji (Wuhan) Hospital, Wuhan430000, Hubei Province, China
| | - Younian Xu
- Department of Anesthesiology, Hanyang Hospital, Wuhan 430000, Hubei Province, China
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Kuo HC, Chen KD, Li PC. Molecular Hydrogen: Emerging Treatment for Stroke Management. Chem Res Toxicol 2023; 36:1864-1871. [PMID: 37988743 DOI: 10.1021/acs.chemrestox.3c00259] [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: 11/23/2023]
Abstract
Ischemic stroke is a major cause of death and disability worldwide. However, only intravenous thrombolysis using mechanical thrombectomy or tissue plasminogen activator is considered an effective and approved treatment. Molecular hydrogen is an emerging therapeutic agent and has recently become a research focus. Molecular hydrogen is involved in antioxidative, anti-inflammatory, and antiapoptotic functions in normal physical processes and may play an important role in stroke management; it has been evaluated in numerous preclinical and clinical studies in several administration formats, including inhalation of hydrogen gas, intravenous or intraperitoneal injection of hydrogen-enriched solution, or drinking of hydrogen-enriched water. In addition to investigation of the underlying mechanisms, the safety and efficacy of using molecular hydrogen have been carefully evaluated, and favorable outcomes have been achieved. All available evidence indicates that molecular hydrogen may be a promising treatment option for stroke management in the future. This review aimed to provide an overview of the role of molecular hydrogen in the management of stroke and possible further modifications of treatment conditions and procedures in terms of dose, duration, and administration route.
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Affiliation(s)
- Ho-Chang Kuo
- Department of Pediatrics and Kawasaki Disease Center, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
- Division of Pulmonary & Critical Care Medicine, Department of Internal Medicine, Department of Respiratory Therapy, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
- Taiwan Association for the Promotion of Molecular Hydrogen, Kaohsiung 83302, Taiwan
| | - Kuang-Den Chen
- Department of Pediatrics and Kawasaki Disease Center, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
- Institute for Translational Research in Biomedicine, Liver Transplantation Center and Department of Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
- Taiwan Association for the Promotion of Molecular Hydrogen, Kaohsiung 83302, Taiwan
| | - Ping-Chia Li
- Department of Occupational Therapy, I-Shou University, Yanchao District, Kaohsiung 82445, Taiwan
- Taiwan Association for the Promotion of Molecular Hydrogen, Kaohsiung 83302, Taiwan
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Han PP, Han Y, Shen XY, Gao ZK, Bi X. NLRP3 inflammasome activation after ischemic stroke. Behav Brain Res 2023; 452:114578. [PMID: 37437697 DOI: 10.1016/j.bbr.2023.114578] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 06/15/2023] [Accepted: 07/09/2023] [Indexed: 07/14/2023]
Abstract
Cerebral ischemia is a pathological condition resulting from the cessation or reduction of blood supply to the cerebral arteries. Neurological deficits that are clinically relevant can arise as a result of brain damage. The etiology of stroke is multifaceted and intricate, with the inflammatory response being a crucial component that warrants significant attention. Following a cerebrovascular accident, the levels of interleukin-1 beta and interleukin-18 within the central nervous system escalate due to the activation of the nucleotide-binding oligomerization domain-like receptor family pyrin domain-containing 3 inflammasome. The inflammation is aggravated by the subsequent occurrence of pyroptosis. The mechanisms that activate the NLRP3 inflammasome pyroptosis signaling pathway axis are described in this article. In addition, we go over how pyroptosis interacts with other processes for regulated cell death. In addition, specific NLRP3 inflammasome pathway inhibitors are identified, which offer new approaches to preventing ischemic brain injury.
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Affiliation(s)
- Ping-Ping Han
- Department of Sport Rehabilitation, Shanghai University of Sport, Shanghai, China
| | - Yu Han
- Department of Sport Rehabilitation, Shanghai University of Sport, Shanghai, China
| | - Xin-Ya Shen
- Graduate School of Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Zhen-Kun Gao
- Graduate School of Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xia Bi
- Department of Rehabilitation Medicine, Shanghai University of Medicine and Health Sciences Affiliated Zhoupu Hospital, Shanghai, China.
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Li J, Wang K, Liu M, He J, Zhang H, Liu H. Dexmedetomidine alleviates cerebral ischemia-reperfusion injury via inhibiting autophagy through PI3K/Akt/mTOR pathway. J Mol Histol 2023:10.1007/s10735-023-10120-1. [PMID: 37186301 DOI: 10.1007/s10735-023-10120-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 03/20/2023] [Indexed: 05/17/2023]
Abstract
Dexmedetomidine has been shown to protect against cerebral ischemia-reperfusion injury (CIRI). Nevertheless, the precise mechanism is obscure. In order to explore the effect of dexmedetomidine pre-conditioning on autophagy against CIRI in rats, middle cerebral artery occlusion (MCAO) was conducted to establish cerebral ischemia-reperfusion (I/R) model in male SD rats with 2 h ischemia and 24 h reperfusion. Dexmedetomidine was delivered to rats at 10, 50 and 100 µg/kg doses respectively, and LY294002, a PI3K/Akt/mTOR pathway inhibitor, was administered at 10 mg/kg intraperitoneally 30 min before MCAO. Neurological deficit score was assessed and cerebral infarct size was detected by TTC staining. Morris water maze (MWM) was performed to estimate spatial learning and memory ability. Furthermore, to detect activity of PI3K/Akt/mTOR pathway and autophagy, p-Akt, p-mTOR, Beclin-1 and LC3 were measured by western blot. Our findings revealed that 50 and 100 µg/kg of dexmedetomidine pretreatment could improve the neurological deficit score and reduce cerebral infarct size after CIRI, while these effects were markedly suppressed by LY294002. In MWM test, dexmedetomidine was confirmed to shorten escape latency and increase times across platform after CIRI. Nevertheless, LY294002 pretreatment eliminated the improvement of dexmedetomidine on spatial learning and memory ability. Furthermore, dexmedetomidine pretreatment reduced ratios of Beclin-1 and LC3II/LC3I and elevated p-Akt/Akt and p-mTOR/mTOR after CIRI. However, above effects of dexmedetomidine were partly reversed by LY294002. Overall, dexmedetomidine pretreatment exerted neuroprotection against CIRI in rats by attenuating autophagy via the PI3K/Akt/mTOR pathway.
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Affiliation(s)
- Jianli Li
- Department of Anesthesiology, Hebei General Hospital, Shijiazhuang, 050051, China.
| | - Keyan Wang
- Department of Anesthesiology, Hebei General Hospital, Shijiazhuang, 050051, China
| | - Meinv Liu
- Department of Anesthesiology, Hebei General Hospital, Shijiazhuang, 050051, China
| | - Jinhua He
- Department of Anesthesiology, Hebei General Hospital, Shijiazhuang, 050051, China
| | - Huanhuan Zhang
- Department of Anesthesiology, Hebei General Hospital, Shijiazhuang, 050051, China
| | - Huan Liu
- Department of Anesthesiology, Hebei General Hospital, Shijiazhuang, 050051, China
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Caffo M, Fusco R, Siracusa R, Caruso G, Barresi V, Di Paola R, Cuzzocrea S, Germanò AF, Cardali SM. Molecular Investigation of DKK3 in Cerebral Ischemic/Reperfusion Injury. Biomedicines 2023; 11:biomedicines11030815. [PMID: 36979794 PMCID: PMC10045463 DOI: 10.3390/biomedicines11030815] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/01/2023] [Accepted: 03/04/2023] [Indexed: 03/30/2023] Open
Abstract
Dickkopf-3 (Dkk3) is an atypical member of the Dkk family of Wnt inhibitors, which has been implicated in the pathophysiology of neurodegenerative disorders. Its role in the mechanisms of cellular degeneration and protection is still unknown. The aim of our work is to investigate the endogenous activation of the DKK3 pathway in a model of transient occlusion of the middle cerebral artery in rats. In particular, the animals were subjected to 1 h of ischemia followed by different reperfusion times (1 h, 6 h, 12 h and 24 h) to evaluate the downstream pathway and the time course of its activation. Western blot analysis showed increased Dkk3 expression in animals with the highest time of reperfusion. The increased levels of Dkk3 were accompanied by reduced Wnt3a, Frz1 and PIWI1a expression in the cytosol while FOXM1 and β-catenin decreased in the nucleus. These molecular changes led to an increase in the apoptotic pathway, as showed by the increased expression of Caspase 3 and Bax and the reduced levels of Bcl-2, and to a decrease in neurogenesis, as shown by the decreased expression of Tbr2, Ngn2 and Pax6. In the second part of the study, we decided to employ curcumin, an activator of the Wnt/β-catenin signaling, to investigate its effect on Dkk3. In particular, curcumin was administered 1 and 6 h after ischemia, and animals were sacrificed 24 h later when the expression of Dkk3 was higher. Our data displayed that curcumin administration decreased Dkk3 expression, and increased Wnt3a, Frz1 and PIWI1a levels. Well in line with these data, curcumin administration increased nuclear β-catenin and FOXM1 expression. The down-regulation of Dkk3 by curcumin led to reduced apoptosis and increased neurogenesis. Summarizing, our results showed that Dkk3 acts as an inhibitor of Wnt/β-catenin signaling during cerebral ischemia. Additionally, its inhibition and the contextual activation of the Wnt/β-catenin pathway are protective against ischemic stroke.
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Affiliation(s)
- Maria Caffo
- Department of Biomedical, Dental and Morphological and Functional Imaging, University of Messina, Via Consolare Valeria, 98125 Messina, Italy
| | - Roberta Fusco
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D'Alcontres, n 31, 98166 Messina, Italy
| | - Rosalba Siracusa
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D'Alcontres, n 31, 98166 Messina, Italy
| | - Gerardo Caruso
- Department of Biomedical, Dental and Morphological and Functional Imaging, University of Messina, Via Consolare Valeria, 98125 Messina, Italy
| | - Valeria Barresi
- Department of Diagnostics and Public Health, University of Verona, Piazzale Ludovico Antonio Scuro, 37124 Verona, Italy
| | - Rosanna Di Paola
- Department of Veterinary Sciences, University of Messina, Viale Annunzita, 98168 Messina, Italy
| | - Salvatore Cuzzocrea
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D'Alcontres, n 31, 98166 Messina, Italy
| | - Antonino Francesco Germanò
- Department of Biomedical, Dental and Morphological and Functional Imaging, University of Messina, Via Consolare Valeria, 98125 Messina, Italy
| | - Salvatore Massimo Cardali
- Department of Biomedical, Dental and Morphological and Functional Imaging, University of Messina, Via Consolare Valeria, 98125 Messina, Italy
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Lan XB, Ni YS, Liu N, Wei W, Liu Y, Yang JM, Ma L, Bai R, Zhang J, Yu JQ. Neuroprotective effects of oxymatrine on hypoxic-ischemic brain damage in neonatal rats by activating the Wnt/β-catenin pathway. Biomed Pharmacother 2023; 159:114266. [PMID: 36652736 DOI: 10.1016/j.biopha.2023.114266] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 01/12/2023] [Accepted: 01/14/2023] [Indexed: 01/19/2023] Open
Abstract
Neuronal apoptosis is a major pathological process associated with neurological dysfunction in neonates after hypoxic-ischemic brain damage (HIBD). Our previous study demonstrated that oxymatrine (OMT) exerts potential neuroprotective effects on neonatal rats subjected to hypoxic-ischemic insult. However, the underlying molecular mechanism remains unclear. In this study, we investigated the effects of OMT-mediated neuroprotection on neonatal HIBD by attempting to determine its effect on the Wnt/β-catenin signaling pathway and explored the underlying mechanism. Both 7-day-old rat pups and primary hippocampus neurons were used to establish the HIBD and oxygen-glucose deprivation (OGD) injury models, respectively. Our results demonstrated that OMT treatment significantly increased cerebral blood flow and reduced S100B concentration, infarct volume, and neuronal apoptosis in neonatal rats. In vitro, OMT markedly increased cell viability and MMP level and decreased DNA damage. Moreover, OMT improved the mRNA and protein levels of Wnt1 and β-catenin, inhibited the expression of DKK1 and GSK-3β, enhanced the nuclear transfer of β-catenin, and promoted the binding activity of β-catenin with Tcf-4; however, it downregulated the expression of cleaved caspase-3 and cleaved caspase-9. Notably, the introduction of XAV-939 (a Wnt/β-catenin signaling inhibitor) reversed the positive effects of OMT both in vivo and in vitro. Collectively, our findings demonstrated that OMT exerted a neuroprotective effect on neonatal HIBD by inhibiting neuronal apoptosis, which was partly via the activation of the Wnt/β-catenin signaling pathway.
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Affiliation(s)
- Xiao-Bing Lan
- College of Pharmacy, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China
| | - Yuan-Shu Ni
- College of Pharmacy, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China
| | - Ning Liu
- College of Pharmacy, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China
| | - Wei Wei
- College of Pharmacy, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China
| | - Yue Liu
- College of Pharmacy, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China
| | - Jia-Mei Yang
- College of Pharmacy, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China
| | - Lin Ma
- College of Pharmacy, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China
| | - Ru Bai
- College of Basic Medicine, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China.
| | - Jian Zhang
- College of Pharmacy, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China; State Key Laboratory of Oncogenes and Related Genes, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Jian-Qiang Yu
- College of Pharmacy, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China; Ningxia Characteristic Traditional Chinese Medicine Modern Engineering Research Center, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China.
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12
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Zhao X, Qiao D, Guan D, Wang K, Cui Y. Chrysophanol Ameliorates Hemin-Induced Oxidative Stress and Endoplasmic Reticulum Stress by Regulating MicroRNA-320-5p/Wnt3a Pathway in HT22 Cells. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:9399658. [PMID: 35936221 PMCID: PMC9355772 DOI: 10.1155/2022/9399658] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 07/07/2022] [Indexed: 11/17/2022]
Abstract
Oxidative stress, endoplasmic reticulum (ER) stress, and neuronal cell apoptosis have been considered as the main pathogenesis factors of brain injury after intracerebral hemorrhage (ICH). Chrysophanol (CHR) has been proved to have neuroprotective effects, but the role and underlying mechanisms of CHR in ICH remain unclear. HT22 cells were dealt with hemin to mimic an in vitro ICH model and then subjected to treatment with or without CHR. The cell viability, apoptosis, ER stress, and oxidative stress were evaluated by conducting the cell counting kit-8 (CCK-8), TdT-mediated dUTP nick end labeling (TUNEL) staining assays, western blot, and corresponding kit, respectively. Further, microRNA-sequencing, bioinformatic analysis, dual-luciferase reporter method, and rescue experiments were conducted to explore the molecular mechanisms of CHR alleviating hemin-induced ER in HT22 cell. Our data revealed that CHR increased cells viability, antiapoptosis, anti-ER stress, and antioxidative stress under conditions of hemin-induced HT22 cell injury. Mechanically, it was observed that Wnt3a was competitively sponged by miR-320-5p, and CHR activated β-catenin pathway by regulating miR-320-5p/Wnt3a molecular axis. Finally, results from the rescue experiment suggested that CHR inhibited hemin-induced cells apoptosis, ER stress, and oxidative stress through regulating the miR-320-5p/Wnt3a axis in HT22 cells. In conclusion, CHR prevented hemin-induced apoptosis, ER stress, and oxidative stress via inhibiting the miR-320-5p/Wnt3a/β-catenin pathway in HT22 cells. Our results certified that CHR could be served as a promising treatment for brain damage following ICH.
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Affiliation(s)
- Xu Zhao
- Department of Pharmacy, Henan Province Hospital of TCM (The Second Clinical Medical College, Henan University of Traditional Chinese Medicine), Zhengzhou 450002, China
| | - Dongge Qiao
- Nursing Department, Henan Province Hospital of TCM (The Second Clinical Medical College, Henan University of Traditional Chinese Medicine), Zhengzhou 450002, China
| | - Dongsheng Guan
- Department of Encephalopathy, Henan Province Hospital of TCM (The Second Clinical Medical College, Henan University of Traditional Chinese Medicine), Zhengzhou 450002, China
| | - Kun Wang
- Department of Pharmacy, Henan Province Hospital of TCM (The Second Clinical Medical College, Henan University of Traditional Chinese Medicine), Zhengzhou 450002, China
| | - Yinglin Cui
- Department of Encephalopathy, Henan Province Hospital of TCM (The Second Clinical Medical College, Henan University of Traditional Chinese Medicine), Zhengzhou 450002, China
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13
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Shen J, Li Y, Jiao Y, Wang J, Hou X, Su Y, Liu B, Liu H, Sun Z, Xi Q, Fu Z. Wnt 3a Protects Myocardial Injury in Elderly Acute Myocardial Infarction by Inhibiting Serum Cystatin C/ROS-Induced Mitochondrial Damage. Front Physiol 2022; 13:950960. [PMID: 35936906 PMCID: PMC9355253 DOI: 10.3389/fphys.2022.950960] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 06/16/2022] [Indexed: 11/13/2022] Open
Abstract
Aging represents an independent risk factor affecting the poor prognosis of patients with acute myocardial infarction (AMI). This present research aimed to explore the molecular mechanism of myocardial injury in elderly AMI by animals and cells experiment. Our previous clinical study found the serum Cystatin C (Cys-C) increased in the elderly AMI population, while the mechanism underlying high Cys-C induced myocardial injury of AMI remains unclear. In the in-vitro study, we confirmed that Wnt/β-catenin could significantly reduce the expression of cytoplasmic Cys-C through transnuclear action, and highly attenuate the occurrence of mitochondrial oxidative stress injury induced via Cys-C/reactive oxygen species (ROS). Furthermore, the addition of exogenous Wnt3a and inhibition of Cys-C expression could effectively inhibit mitochondrial oxidative stress injury and relieve the acute myocardial hypoxia injury. These results indicate that Cys-C exerted damaging effects on the hypoxic aging cardiomyocyte through the ROS/mitochondrial signaling pathway. Inhibition of this pathway effectively reduced the apoptosis of aging cardiomyocytes. In the in-vivo study, we also explored the function of the Wnt/Cys-C pathway on the ischemic infarction heart. We confirmed that Wnt/β-catenin served as the upstream protective protein of this pathway, and the promotion of this pathway improved the cardiac structure and function of the elderly AMI mice effectively.
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Affiliation(s)
- Jian Shen
- Senior Department of Cardiology, The Sixth Medical Center, Chinese PLA General Hospital and Chinese PLA Medical School, Beijing, China
- Outpatient Department of Tongzhou Retired Cadres Rest Center, Beijing, China
| | - Ying Li
- Senior Department of Cardiology, The Sixth Medical Center, Chinese PLA General Hospital and Chinese PLA Medical School, Beijing, China
| | - Yang Jiao
- Senior Department of Cardiology, The Sixth Medical Center, Chinese PLA General Hospital and Chinese PLA Medical School, Beijing, China
| | - Jihang Wang
- Senior Department of Cardiology, The Sixth Medical Center, Chinese PLA General Hospital and Chinese PLA Medical School, Beijing, China
| | - Xiaoling Hou
- Senior Department of Cardiology, The Sixth Medical Center, Chinese PLA General Hospital and Chinese PLA Medical School, Beijing, China
| | - Yongkang Su
- Senior Department of Cardiology, The Sixth Medical Center, Chinese PLA General Hospital and Chinese PLA Medical School, Beijing, China
| | - Bing Liu
- Senior Department of Cardiology, The Sixth Medical Center, Chinese PLA General Hospital and Chinese PLA Medical School, Beijing, China
| | - Henan Liu
- Senior Department of Cardiology, The Sixth Medical Center, Chinese PLA General Hospital and Chinese PLA Medical School, Beijing, China
| | - Zhijun Sun
- Senior Department of Cardiology, The Sixth Medical Center, Chinese PLA General Hospital and Chinese PLA Medical School, Beijing, China
| | - Qing Xi
- The First Medical Center, Chinese PLA General Hospital, Beijing, China
- *Correspondence: Qing Xi, ; Zhenhong Fu,
| | - Zhenhong Fu
- Senior Department of Cardiology, The Sixth Medical Center, Chinese PLA General Hospital and Chinese PLA Medical School, Beijing, China
- *Correspondence: Qing Xi, ; Zhenhong Fu,
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14
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Cao Y, Liu J, Lu Q, Huang K, Yang B, Reilly J, Jiang N, Shu X, Shang L. An update on the functional roles of long non‑coding RNAs in ischemic injury (Review). Int J Mol Med 2022; 50:91. [PMID: 35593308 PMCID: PMC9170192 DOI: 10.3892/ijmm.2022.5147] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 05/05/2022] [Indexed: 11/20/2022] Open
Abstract
Ischemic injuries result from ischemia and hypoxia in cells. Tissues and organs receive an insufficient supply of nutrients and accumulate metabolic waste, which leads to the development of inflammation, fibrosis and a series of other issues. Ischemic injuries in the brain, heart, kidneys, lungs and other organs can cause severe adverse effects. Acute renal ischemia induces acute renal failure, heart ischemia induces myocardial infarction and cerebral ischemia induces cerebrovascular accidents, leading to loss of movement, consciousness and possibly, life-threatening disabilities. Existing evidence suggests that long non-coding RNAs (lncRNAs) are regulatory sequences involved in transcription, post-transcription, epigenetic regulation and multiple physiological processes. lncRNAs have been shown to be differentially expressed following ischemic injury, with the severity of the ischemic injury being affected by the upregulation or downregulation of certain types of lncRNA. The present review article provides an extensive summary of the functional roles of lncRNAs in ischemic injury, with a focus on the brain, heart, kidneys and lungs. The present review mainly summarizes the functional roles of lncRNA MALAT1, lncRNA MEG3, lncRNA H19, lncRNA TUG1, lncRNA NEAT1, lncRNA AK139328 and lncRNA CAREL, among which lncRNA MALAT1, in particular, plays a crucial role in ischemic injury and is currently a hot research topic.
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Affiliation(s)
- Yanqun Cao
- School of Basic Medical Sciences, Shaoyang University, Shaoyang, Hunan 422000, P.R. China
| | - Jia Liu
- School of Basic Medical Sciences, Shaoyang University, Shaoyang, Hunan 422000, P.R. China
| | - Quzhe Lu
- School of Basic Medical Sciences, Shaoyang University, Shaoyang, Hunan 422000, P.R. China
| | - Kai Huang
- School of Basic Medical Sciences, Shaoyang University, Shaoyang, Hunan 422000, P.R. China
| | - Baolin Yang
- Department of Human Anatomy, School of Basic Medicine, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - James Reilly
- Department of Biological and Biomedical Sciences, Glasgow Caledonian University, Glasgow G4 0BA, UK
| | - Na Jiang
- Affiliated Eye Hospital of Nanchang University, Jiangxi Research Institute of Ophthalmology and Visual Science, Jiangxi Clinical Research Center for Ophthalmic Disease, Nanchang, Jiangxi 330006, P.R. China
| | - Xinhua Shu
- School of Basic Medical Sciences, Shaoyang University, Shaoyang, Hunan 422000, P.R. China
| | - Lei Shang
- Affiliated Eye Hospital of Nanchang University, Jiangxi Research Institute of Ophthalmology and Visual Science, Jiangxi Clinical Research Center for Ophthalmic Disease, Nanchang, Jiangxi 330006, P.R. China
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15
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Chen C, Chang X, Zhang S, Zhao Q, Lei C. CircRNA CTNNB1 (circCTNNB1) ameliorates cerebral ischemia/reperfusion injury by sponging miR-96-5p to up-regulate scavenger receptor class B type 1 (SRB1) expression. Bioengineered 2022; 13:10258-10273. [PMID: 35435123 PMCID: PMC9162012 DOI: 10.1080/21655979.2022.2061304] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Emerging studies show that circRNA catenin beta 1 (circCTNNB1) plays a critical role in cancer. However, the expression and function of circCTNNB1 in cerebral ischemia/reperfusion injury (IRI) have not been reported. The present study discovered that circCTNNB1 and scavenger receptor class B type 1 (SRB1) expression levels were significantly down-regulated in mouse astrocytes (mAS) treated with oxygen glucose deprivation and reperfusion (OGD/R), and similar results were observed in a mouse middle cerebral artery occlusion model. Overexpression of circCTNNB1 alleviated cell apoptosis, oxidative stress and the inflammatory response induced by OGD/R in vitro. Up-regulation of circCTNNB1 increased SRB1 expression levels to protect mAS cells from OGD/R-induced damage. CircCTNNB1 and SRB1 interacted with miR-96-5p, and the overexpression of miR-96-5p efficiently reversed the function of circCTNNB1 in OGD/R-treated mAS cells. CircCTNNB1 protected against cerebral ischemia-reperfusion injury by up-regulating SRB1 in vivo. In conclusion, our findings suggest that circCTNNB1 acts as a competitive endogenous RNA for miR-96-5p to alleviate cerebral IRI, which provides novel evidence that circCTNNB1 and SRB1 may be biomarkers and therapeutic targets for cerebral IRI.
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Affiliation(s)
- Chun Chen
- Department of Neurology, First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Xiaolong Chang
- Department of Neurology, First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Shifei Zhang
- Department of Neurology, First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Qi Zhao
- Department of Neurology, First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Chunyan Lei
- Department of Neurology, First Affiliated Hospital of Kunming Medical University, Kunming, China
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16
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Role of Nuclear-Receptor-Related 1 in the Synergistic Neuroprotective Effect of Umbilical Cord Blood and Erythropoietin Combination Therapy in Hypoxic Ischemic Encephalopathy. Int J Mol Sci 2022; 23:ijms23052900. [PMID: 35270042 PMCID: PMC8911165 DOI: 10.3390/ijms23052900] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 03/04/2022] [Accepted: 03/04/2022] [Indexed: 12/10/2022] Open
Abstract
Neonatal hypoxic–ischemic encephalopathy (HIE) results in neurological impairments; cell-based therapy has been suggested as a therapeutic avenue. Previous research has demonstrated the synergistically potentiated therapeutic efficacy of human umbilical cord blood (UCB) by combining recombinant human erythropoietin (EPO) treatment for recovery from HIE. However, its molecular mechanism is not entirely understood. In the present study, we analyzed the mechanisms underlying the effect of combination treatment with EPO and UCB by transcriptomic analysis, followed by gene enrichment analysis. Mouse HIE model of the neonate was prepared and randomly divided into five groups: sham, HIE, and UCB, EPO, and UCB+EPO treatments after HIE. A total of 376 genes were differentially expressed when |log2FC| ≥ 1-fold change expression values were considered to be differentially expressed between UCB+EPO and HIE. Further assessment through qRT-PCR and gene enrichment analysis confirmed the expression and correlation of its potential target, Nurr1, as an essential gene involved in the synergistic effect of the UCB+EPO combination. The results indicated the remarkable activation of Wnt/β-catenin signaling by reducing the infarct size by UCB+EPO treatment, accompanied by Nurr1 activity. In conclusion, these findings suggest that the regulation of Nurr1 through the Wnt/β-catenin pathway exerts a synergistic neuroprotective effect in UCB and EPO combination treatment.
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17
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Tao X, Jiang Y, Zheng X, Ji X, Peng F. Dihydromyricetin ameliorates oxygen‑glucose deprivation and re‑oxygenation‑induced injury in HT22 cells by activating the Wnt/β‑catenin signaling pathway. Mol Med Rep 2022; 25:103. [PMID: 35088876 PMCID: PMC8822877 DOI: 10.3892/mmr.2022.12619] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 08/20/2021] [Indexed: 11/06/2022] Open
Abstract
Dihydromyricetin (DMY) is a natural flavonoid that possesses a wide range of pharmacological properties. The aim of the present study was to determine whether DMY could protect against nerve cell injury following ischemic stroke through antioxidant and neuroprotective effects. The effects of DMY on the viability, oxidative stress and apoptosis of HT22 cells following oxygen‑glucose deprivation and re‑oxygenation (OGD/R) were examined using MTT, lactate dehydrogenase (LDH), superoxide (SOD), malondialdehyde (MDA), western blot and TUNEL assays. Furthermore, Wnt/β‑catenin signaling proteins in OGD/R‑stimulated HT22 cells were detected in the presence or absence of DMY. In a separate experiment, the effect of DMY on OGD/R‑induced HT22 cell injury was also observed in the presence of the Wnt/β‑catenin inhibitor, XAV939. The results demonstrated that DMY had no impact on the survival of untreated HT22 cells, although DMY treatment significantly increased cell viability and inhibited cytotoxicity, oxidative stress and apoptosis following OGD/R. In addition, DMY upregulated the expression of Wnt/β‑catenin in OGD/R‑stimulated HT22 cells. In conclusion, DMY protected HT22 cells from OGD/R‑induced oxidative stress and apoptosis, and its effects may be mediated by the activation of the Wnt/β‑catenin signaling pathway.
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Affiliation(s)
- Xiaoxiao Tao
- Department of Neurology, Huangyan Hospital of Wenzhou Medical University, Taizhou First People's Hospital, Taizhou, Zhejiang 318020, P.R. China
| | - Yaping Jiang
- Department of Clinical Laboratory, Huangyan Hospital of Wenzhou Medical University, Taizhou First People's Hospital, Taizhou, Zhejiang 318020, P.R. China
| | - Xian Zheng
- Department of Neurology, Huangyan Hospital of Wenzhou Medical University, Taizhou First People's Hospital, Taizhou, Zhejiang 318020, P.R. China
| | - Xiaoxiao Ji
- Department of Neurology, Huangyan Hospital of Wenzhou Medical University, Taizhou First People's Hospital, Taizhou, Zhejiang 318020, P.R. China
| | - Feifei Peng
- Department of Neurology, Huangyan Hospital of Wenzhou Medical University, Taizhou First People's Hospital, Taizhou, Zhejiang 318020, P.R. China
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18
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Pang P, Qu Z, Yu S, Pang X, Li X, Gao Y, Liu K, Liu Q, Wang X, Bian Y, Liu Y, Jia Y, Sun Z, Khan H, Mei Z, Bi X, Wang C, Yin X, Du Z, Du W. Mettl14 Attenuates Cardiac Ischemia/Reperfusion Injury by Regulating Wnt1/β-Catenin Signaling Pathway. Front Cell Dev Biol 2022; 9:762853. [PMID: 35004673 PMCID: PMC8733823 DOI: 10.3389/fcell.2021.762853] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 11/17/2021] [Indexed: 12/27/2022] Open
Abstract
N6-methyladenosine (m6A) methylation in RNA is a dynamic and reversible modification regulated by methyltransferases and demethylases, which has been reported to participate in many pathological processes of various diseases, including cardiac disorders. This study was designed to investigate an m6A writer Mettl14 on cardiac ischemia–reperfusion (I/R) injury and uncover the underlying mechanism. The m6A and Mettl14 protein levels were increased in I/R hearts and neonatal mouse cardiomyocytes upon oxidative stress. Mettl14 knockout (Mettl14+/−) mice showed pronounced increases in cardiac infarct size and LDH release and aggravation in cardiac dysfunction post-I/R. Conversely, adenovirus-mediated overexpression of Mettl14 markedly reduced infarct size and apoptosis and improved cardiac function during I/R injury. Silencing of Mettl14 alone significantly caused a decrease in cell viability and an increase in LDH release and further exacerbated these effects in the presence of H2O2, while overexpression of Mettl14 ameliorated cardiomyocyte injury in vitro. Mettl14 resulted in enhanced levels of Wnt1 m6A modification and Wnt1 protein but not its transcript level. Furthermore, Mettl14 overexpression blocked I/R-induced downregulation of Wnt1 and β-catenin proteins, whereas Mettl14+/− hearts exhibited the opposite results. Knockdown of Wnt1 abrogated Mettl14-mediated upregulation of β-catenin and protection against injury upon H2O2. Our study demonstrates that Mettl14 attenuates cardiac I/R injury by activating Wnt/β-catenin in an m6A-dependent manner, providing a novel therapeutic target for ischemic heart disease.
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Affiliation(s)
- Ping Pang
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, China
| | - Zhezhe Qu
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, China
| | - Shuting Yu
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, China
| | - Xiaochen Pang
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, China
| | - Xin Li
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, China
| | - Yuelin Gao
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, China
| | - Kuiwu Liu
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, China
| | - Qian Liu
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, China
| | - Xiuzhu Wang
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, China
| | - Yu Bian
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, China
| | - Yingqi Liu
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, China
| | - Yingqiong Jia
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, China
| | - Zhiyong Sun
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, China
| | - Hanif Khan
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, China
| | - Zhongting Mei
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, China
| | - Xiaoqian Bi
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, China
| | - Changhao Wang
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, China
| | - Xinda Yin
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, China
| | - Zhimin Du
- Institute of Clinical Pharmacy, The Second Affiliated Hospital of Harbin Medical University (The University Key Laboratory of Drug Research, Heilongjiang Province), Harbin, China.,Department of Clinical Pharmacology, College of Pharmacy, Harbin Medical University, Harbin, China
| | - Weijie Du
- Department of Pharmacology (The State-Province Key Laboratories of Biomedicine Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, China.,Translational Medicine Research and Cooperation Center of Northern China, Heilongjiang Academy of Medical Sciences, Harbin, China
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19
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Wang N, Nie H, Zhang Y, Han H, Wang S, Liu W, Tian K. Dexmedetomidine exerts cerebral protective effects against cerebral ischemic injury by promoting the polarization of M2 microglia via the Nrf2/HO-1/NLRP3 pathway. Inflamm Res 2021; 71:93-106. [PMID: 34767031 DOI: 10.1007/s00011-021-01515-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 10/15/2021] [Accepted: 10/20/2021] [Indexed: 12/14/2022] Open
Abstract
INTRODUCTION Cerebral ischemic injury is associated with long-term disability. Dexmedetomidine (Dex) can exert neuroprotective effects on cerebral ischemic/reperfusion injury. The present study explored the mechanism of Dex in cerebral ischemic injury. MATERIALS AND METHODS To this end, the permanent middle cerebral artery occlusion (p-MCAO) mouse model was established and treated with Dex or/and Nrf2 inhibitor ML385. Subsequently, microglia were subjected to oxygen-glucose deprivation (OGD) in sugar-free environment and thereafter treated with Dex, Nrf2 inhibitor, and NLRP3 lentiviral overexpression vector, respectively. RESULTS Dex alleviated the neurobehavioral deficit of p-MCAO mice, reduced brain water content, relieved pathological changes, and reduced cerebral infarction size. Dex promoted the polarization of microglia from M1 to M2, thus ameliorating oxidative stress and inflammatory responses. Our results showed that Dex promoted M2-polarization of microglia in vivo and in vitro by promoting HO-1 expression via Nrf2 nuclear import. Moreover, the Nrf2/HO-1 axis inhibited the activation of NLRP2 inflammasome and NLRP3 overexpression reversed the effect of Dex. CONCLUSION In conclusion, Dex promoted M2-polarization of microglia and attenuated oxidative stress and inflammation, and thus protected against cerebral ischemic injury by activating the Nrf2/HO-1 pathway and inhibiting NLRP3 inflammasome.
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Affiliation(s)
- Ning Wang
- Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Nangang District, Harbin, 150081, Heilongjiang, China
| | - Huan Nie
- Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Nangang District, Harbin, 150081, Heilongjiang, China
| | - Yueyue Zhang
- Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Nangang District, Harbin, 150081, Heilongjiang, China
| | - Huiying Han
- Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Nangang District, Harbin, 150081, Heilongjiang, China
| | - Shan Wang
- Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Nangang District, Harbin, 150081, Heilongjiang, China
| | - Wenjuan Liu
- Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Nangang District, Harbin, 150081, Heilongjiang, China.
| | - Kuo Tian
- Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Nangang District, Harbin, 150081, Heilongjiang, China.
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Zhao S, Cheng WJ, Liu X, Li Z, Li HZ, Shi N, Wang XL. Effects of Dexmedetomidine and Oxycodone on Neurocognitive and Inflammatory Response After Tourniquet-Induced Ischemia-Reperfusion Injury. Neurochem Res 2021; 47:461-469. [PMID: 34625874 DOI: 10.1007/s11064-021-03461-4] [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: 05/23/2021] [Revised: 09/13/2021] [Accepted: 09/29/2021] [Indexed: 11/27/2022]
Abstract
To evaluate the effects of dexmedetomidine (Dex) and oxycodone (Oxy) on neurocognitive and inflammatory response after tourniquet-induced ischemia-reperfusion (I/R) injury. C57/BL6 mice were used to construct the mouse model of tourniquet-induced I/R injury. Mice (n = 48) were randomly divided into sham, I/R, Dex or Oxy group. Morris water maze test was performed to assess the spatial learning and memory function. The expression of NF-κB, TLR4, NR2B, M1 (CD68 and TNF-α) and M2 (CD206 and IL-10) polarization markers in mice hippocampus were detected by western blot or immunofluorescent staining. Spontaneous excitatory post-synaptic currents (sEPSCs) were recorded by electrophysiology. Dex treatment alleviated I/R-induced declines in learning and memory (p < 0.05), while Oxy had no significant effect on it. Compared with I/R group, Dex and Oxy treatment down-regulated the expression of NF-κB, TLR4, TNF-α and CD68 (all p < 0.05), while no significantly different was found in CD206 and IL-10. In addition, Dex treatment down-regulated the expression of NR2B and reduced the frequency and amplitude of sEPSCs in I/R model mice (all p < 0.05), while Oxy had no significant effect on them. Tourniquet-induced I/R could impair the neurocognitive function of mice. Dex treatment could alleviate I/R-induced neurocognitive disorder by inhibiting abnormal synaptic transmission in hippocampal neurons. Both Dex and Oxy could alleviate the inflammatory response likely by inhibiting the polarization of microglia toward M1 phenotype via TLR4/NF-κB pathway. Future studies are needed to further examine the effects of Dex on neurocognitive disorder after tourniquet-induced I/R injury and investigate the exact mechanism.
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Affiliation(s)
- Shuang Zhao
- Department of Anesthesiology, The Third Hospital of Hebei Medical University, No.139, Ziqiang Road, Qiaoxi District, Shijiazhuang, 050051, Hebei, China
| | - Wen-Jie Cheng
- Department of Anesthesiology, Tianjin Hospital, Tianjin, China
| | - Xin Liu
- Department of Anesthesiology, The Third Hospital of Hebei Medical University, No.139, Ziqiang Road, Qiaoxi District, Shijiazhuang, 050051, Hebei, China
| | - Zhao Li
- Department of Anesthesiology, The Third Hospital of Hebei Medical University, No.139, Ziqiang Road, Qiaoxi District, Shijiazhuang, 050051, Hebei, China
| | - Hui-Zhou Li
- Department of Anesthesiology, The Third Hospital of Hebei Medical University, No.139, Ziqiang Road, Qiaoxi District, Shijiazhuang, 050051, Hebei, China
| | - Na Shi
- Department of Anesthesiology, The Third Hospital of Hebei Medical University, No.139, Ziqiang Road, Qiaoxi District, Shijiazhuang, 050051, Hebei, China
| | - Xiu-Li Wang
- Department of Anesthesiology, The Third Hospital of Hebei Medical University, No.139, Ziqiang Road, Qiaoxi District, Shijiazhuang, 050051, Hebei, China.
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Sun K, Zhang J, Yang Q, Zhu J, Zhang X, Wu K, Li Z, Xie W, Luo X. Dexmedetomidine exerts a protective effect on ischemic brain injury by inhibiting the P2X7R/NLRP3/Caspase-1 signaling pathway. Brain Res Bull 2021; 174:11-21. [PMID: 33991606 DOI: 10.1016/j.brainresbull.2021.05.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 04/30/2021] [Accepted: 05/08/2021] [Indexed: 12/29/2022]
Abstract
Dexmedetomidine (Dex) has been suggested to exert a protective function in ischemic brain injury. In this study, we aimed to elucidate the intrinsic mechanisms of Dex in regulating microglia pyroptosis in ischemic brain injury via the purinergic 2X7 receptor (P2X7R)/NLRP3/Caspase-1 signaling pathway. First, permanent middle cerebral artery occlusion (p-MCAO) rat model was established, followed by the measurement of behavioral deficit, neuronal injury, the volume of brain edema and the infarct size. Dex treatment was suggested to alleviate the neurological deficits in p-MCAO rats and reduce the brain water content and infarct size. Additionally, rat microglia were cultured in vitro and a model of oxygen and glucose (OGD) was established. Microglia cell activity and ultrastructure were detected. Dex could increase cell activity and reduce LDH activity, partially reversing the changes in cell morphology. Furthermore, the activation of P2X7R/NLRP3/Caspase-1 pathway was tested. The obtained findings indicated Dex suppressed microglial pyroptosis by inhibiting the P2X7R/NLRP3/Caspase-1 pathway. Inhibition of P2X7R or NLRP3 could inhibit Caspase-1 p10 expression, improve cell activity, and reduce LDH activity. The same result was verified in vivo experiments. This study indicated that Dex inhibited microglia pyroptosis by blocking the P2X7R/NLRP3/Caspase-1 pathway, thus playing a protective role against ischemic brain injury.
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Affiliation(s)
- Ke Sun
- Department of Neurology, Anyang People's Hospital, Anyang, Henan, 455000, China
| | - Jiangang Zhang
- Department of Neurology, Anyang People's Hospital, Anyang, Henan, 455000, China
| | - Qingcheng Yang
- Department of Neurology, Anyang People's Hospital, Anyang, Henan, 455000, China.
| | - Jinzhao Zhu
- Department of Neurology, Anyang People's Hospital, Anyang, Henan, 455000, China
| | - Xiangdong Zhang
- Department of Neurology, Anyang People's Hospital, Anyang, Henan, 455000, China
| | - Kun Wu
- Department of Neurology, Anyang People's Hospital, Anyang, Henan, 455000, China
| | - Zhenhua Li
- Department of Neurology, Anyang People's Hospital, Anyang, Henan, 455000, China
| | - Weizheng Xie
- Department of Neurology, Anyang People's Hospital, Anyang, Henan, 455000, China
| | - Xue Luo
- Department of Neurology, Anyang People's Hospital, Anyang, Henan, 455000, China
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Zhou W, Zhang Y, Jiao Y, Yin W, Dong H, Xu S, Tang D, Jiang J, Shao J, Wang Z, Yu W. Dexmedetomidine maintains blood-brain barrier integrity by inhibiting Drp1-related endothelial mitochondrial dysfunction in ischemic stroke. Acta Biochim Biophys Sin (Shanghai) 2021; 53:1177-1188. [PMID: 34244711 DOI: 10.1093/abbs/gmab092] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Indexed: 12/17/2022] Open
Abstract
Stroke is the second leading cause of death and long-term disability worldwide, which lacks effective treatment. Perioperative stroke is associated with much higher rates of mortality and disability. The neuroprotective role of dexmedetomidine (Dex), a highly selective agonist of alpha2-adrenergic receptor, has been reported in a stroke rat model, and it was found that pretreatment of Dex before stroke could alleviate blood-brain barrier (BBB) breakdown. However, the underlying mechanisms are still unknown. As the brain endothelial cells are the main constituents of BBB and in high demand of energy, mitochondrial function of endothelial cells plays an important role in the maintenance of BBB. Given that dynamin-related protein 1 (Drp1) is a protein mediating mitochondrial fission, with mitochondrial fusion that balances mitochondrial morphology and ensures mitochondria function, the present study was designed to investigate the possible role of Drp1 in endothelial cells involved in the neuroprotective effects of Dex in ischemic stroke. Our results showed that preconditioning with Dex reduced infarction volume, alleviated brain water content and BBB damage, and improved neurological scores in middle cerebral artery occlusion rats. Meanwhile, Dex enhanced cell activity and decreased cell apoptosis in oxygen-glucose deprivation human brain microvascular endothelial cells in vitro. These protective effects of Dex were correlated with the mitochondrial morphology integrality of endothelial cells, mediated by increased phosphorylation of serine 637 in Drp1, and could be reversed by α2-adrenergic receptor antagonist Yohimbine and AMP-activated protein kinase inhibitor Compound C. These findings suggest new molecular pathways involved in the neuroprotective effects of Dex in ischemic stroke. As Dex is routinely used as a sedative drug clinically, our findings provide molecular evidence that it has perioperative neuroprotection from ischemic stroke.
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Affiliation(s)
- Wei Zhou
- Department of Anesthesiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Yunchun Zhang
- Department of Anesthesiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Yingfu Jiao
- Department of Anesthesiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Wen Yin
- Department of Anesthesiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Haiping Dong
- Department of Anesthesiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Saihong Xu
- Department of Anesthesiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Dan Tang
- Department of Anesthesiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Junli Jiang
- Department of Anesthesiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Jianlin Shao
- Department of Anesthesiology, First Affiliated Hospital of Kunming Medical University, No.1 School of Clinical Medicine, Kunming Medical University, Kunming 650011, China
| | - Zhenhong Wang
- Department of Anesthesiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Weifeng Yu
- Department of Anesthesiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
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Gan L, Wan X, Ma D, Yang FC, Zhu J, Rogers RS, Wheatley JL, Koch LG, Britton SL, Thyfault JP, Geiger PC, Stanford JA. Intrinsic Aerobic Capacity Affects Hippocampal pAkt and HSP72 Response to an Acute High Fat Diet and Heat Treatment in Rats. J Alzheimers Dis Rep 2021; 5:469-475. [PMID: 34368631 PMCID: PMC8293662 DOI: 10.3233/adr-200289] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/03/2021] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND Aerobic capacity is associated with metabolic, cardiovascular, and neurological health. Low-capacity runner (LCR) rats display low aerobic capacity, metabolic dysfuction, and spatial memory deficits. A heat treatment (HT) can improve metabolic dysfunction in LCR peripheral organs after high fat diet (HFD). Little is known about metabolic changes in the brains of these rats following HT. OBJECTIVE Our objective was to examine the extent to which high or low aerobic capacity impacts Akt (a protein marker of metabolism) and heat shock protein 72 (HSP72, a marker of heat shock response) after HFD and HT in hippocampus. METHODS We measured phosphorylated Akt (pAkt) in the striatum and hippocampus, and HSP72 in the hippocampus, of HFD-fed and chow-fed LCR and high-capacity runner (HCR) rats with and without HT. RESULTS pAkt was lower in the hippocampus of chow-fed LCR than HCR rats. HFD resulted in greater pAkt in LCR but not HCR rats, but HT resulted in lower pAkt in the LCR HFD group. HSP72 was greater in both HCR and LCR rat hippocampus after HT. The HFD blunted this effect in LCR compared to HCR hippocampus. CONCLUSION The abnormal phosphorylation of Akt and diminished HSP response in the hippocampus of young adult LCR rats might indicate early vulnerability to metabolic challenges in this key brain region associated with learning and memory.
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Affiliation(s)
- Li Gan
- Department of Neurology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS, USA
| | - Xiaonan Wan
- The Second Clinical Medical College of Nanchang University, Nanchang, Jiangxi, China
| | - Delin Ma
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS, USA
- Department of Endocrinology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Fu-Chen Yang
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS, USA
| | - Jingpeng Zhu
- The Second Clinical Medical College of Nanchang University, Nanchang, Jiangxi, China
| | - Robert S. Rogers
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS, USA
| | - Joshua L. Wheatley
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS, USA
| | - Lauren G. Koch
- Department of Physiology and Pharmacology, The University of Toledo, Toledo, OH, USA
| | - Steven L. Britton
- Department of Anesthesiology, University of Michigan, Ann Arbor, MI, USA
| | - John P. Thyfault
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS, USA
- Research Service, Kansas City VA Medical Center, Kansas City, MO, USA
| | - Paige C. Geiger
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS, USA
| | - John A. Stanford
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS, USA
- Kansas Intellectual and Developmental Disabilities Research Center, University of Kansas Medical Center, Kansas City, KS, USA
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Song X, Xue Y, Cai H. Down-Regulation of miR-181a-5p Prevents Cerebral Ischemic Injury by Upregulating En2 and Activating Wnt/β-catenin Pathway. J Stroke Cerebrovasc Dis 2021; 30:105485. [PMID: 33360253 DOI: 10.1016/j.jstrokecerebrovasdis.2020.105485] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 11/05/2020] [Accepted: 11/16/2020] [Indexed: 12/14/2022] Open
Abstract
PURPOSE Cerebral ischemic injury contributes to severe dysfunction of the brain, which triggers extremely high mortality and disability. The role of microRNA (miR)-181a-5p is documented in cerebral ischemic injury. Therefore, this study intended to further figure out the mechanism of miR-181a-5p in cerebral ischemic injury. METHODS miR-181a-5p expression in middle cerebral artery occlusion (MCAO) mouse model, oxygen-glucose-deprivation/reoxygenation (OGD/R) N2a cell model, and serum from acute ischemic injury (ACI) patients was evaluated using reverse transcription quantitative polymerase chain reaction (RT-qPCR). Gain- and loss-of-function assays were implemented in MCAO mice and OGD/R-induced N2a cells. In mice, the cerebral infarction area was assessed with 2,3,5-triphenyltetrazolium chloride staining, the number of damaged neurons by Nissl staining, and apoptosis by TdT-mediated dUTP-biotin nick end-labeling staining. Moreover, N2a cell apoptosis and proliferation were determined with flow cytometry or 5-ethynyl-2'-deoxyuridine staining, respectively. The expression of En2 and Wnt/β-catenin pathway-related factors was determined with RT-qPCR and Western blot analysis. The targeting relationship between miR-181a-5p and En2 was evaluated by dual luciferase reporter gene assay. RESULTS miR-181a-5p was highly expressed in serum of ACI patients, MCAO mice, and OGD/R-induced N2a cells. En2, lowly expressed in MCAO mice, was targeted by miR-181a-5p, and miR-181a-5p down-regulation activated the Wnt/β-catenin pathway. Furthermore, miR-181a-5p inhibition or En2 overexpression reduced cerebral infarction area, the number of damaged neurons, and apoptosis in MCAO mice, and also diminished apoptosis and accelerated proliferation of OGD/R-induced N2a cells. CONCLUSION miR-181a-5p suppression activated Wnt/β-catenin pathway and sequentially attenuated cerebral ischemic injury by targeting En2.
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Affiliation(s)
- Xiaoming Song
- Department of Neurology, Ningbo Yinzhou No. 2 Hospital, Ningbo 315100, P.R. China.
| | - Yongming Xue
- Department of Ultrasound imaging, Ningbo Women & Children's Hospital, Ningbo 315000, P.R. China
| | - Hairui Cai
- Department of Obstetrics and Gynecology, Ningbo Women & Children's Hospital, Ningbo 315000, P.R. China
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25
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Yu Q, Dai H, Jiang Y, Zha Y, Zhang J. Sevoflurane alleviates oxygen-glucose deprivation/reoxygenation-induced injury in HT22 cells through regulation of the PI3K/AKT/GSK3β signaling pathway. Exp Ther Med 2021; 21:376. [PMID: 33732349 PMCID: PMC7903476 DOI: 10.3892/etm.2021.9807] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 07/07/2020] [Indexed: 12/30/2022] Open
Abstract
Sevoflurane (Sev), a volatile anesthetic, has been reported to exhibit beneficial effects on different ischemia/reperfusion (I/R)-injured organs. However, the neuroprotective effect of Sev on cerebral I/R injury is poorly understood. In the present study, the effects of Sev on HT22 cells exposed to oxygen-glucose deprivation/reperfusion (OGD/R) injury are investigated. The present study demonstrated that OGD/R suppressed the cell viability and increased lactate dehydrogenase (LDH) release from the cells, and these effects were attenuated by Sev treatment. The results also demonstrated that Sev alleviated OGD/R-induced cell apoptosis via flow cytometry and caspase-3 activity determination. Biochemical analysis results revealed that Sev significantly protected against OGD/R-induced oxidative stress by reducing ROS generation and improving antioxidant defense markers. Western blot analysis demonstrated that Sev reactivated the PI3K/AKT/glycogen synthase kinase-3β (GSK3β) signaling pathway, which was inhibited by OGD/R. In addition, wortmannin, a selective PI3K inhibitor was used to investigate the underlying pathways. Notably, the neuroprotective effect of Sev on apoptosis and reactive oxygen species production was found to be suppressed by wortmannin. Collectively, these results demonstrated that Sev may protect neuronal cells against OGD/R-induced injury through the activation of the PI3K/AKT/GSK3β signaling pathway. The findings from the present study provide a novel insight into understanding the neuroprotective effect of Sev on cerebral I/R injury.
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Affiliation(s)
- Qiong Yu
- Department of Anesthesia, Huashan Hospital, Fudan University, Shanghai 200040, P.R. China
| | - Haofei Dai
- Department of Nursing, Huashan Hospital-North, Fudan University, Shanghai 201907, P.R. China
| | - Yinan Jiang
- Department of Anesthesia, Huashan Hospital-North, Fudan University, Shanghai 201907, P.R. China
| | - Yifeng Zha
- Department of Anesthesia, Huashan Hospital-North, Fudan University, Shanghai 201907, P.R. China
| | - Jie Zhang
- Department of Anesthesia, Huashan Hospital-North, Fudan University, Shanghai 201907, P.R. China
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Dong X, Luo Y, Lu S, Ma H, Zhang W, Zhu Y, Sun G, Sun X. Ursodesoxycholic acid alleviates liver fibrosis via proregeneration by activation of the ID1-WNT2/HGF signaling pathway. Clin Transl Med 2021; 11:e296. [PMID: 33635004 PMCID: PMC7828260 DOI: 10.1002/ctm2.296] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 01/07/2021] [Accepted: 01/10/2021] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND The human liver possesses a remarkable capacity for self-repair. However, liver fibrosis remains a serious medical concern, potentially progressing to end-stage liver cirrhosis and even death. Liver fibrosis is characterized by excess accumulation of extracellular matrix in response to chronic injury. Liver regenerative ability, a strong indicator of liver health, is important in resisting fibrosis. In this study, we provide evidence that ursodesoxycholic acid (UDCA) can alleviate liver fibrosis by promoting liver regeneration via activation of the ID1-WNT2/hepatocyte growth factor (HGF) pathway. METHODS Bile duct ligation (BDL) and partial hepatectomy (PH) mouse models were used to verify the effects of UDCA on liver fibrosis, regeneration, and the ID1-WNT2/HGF pathway. An Id1 knockdown mouse model was also used to assess the role of Id1 in UDCA alleviation of liver fibrosis. RESULTS Our results demonstrate that UDCA can alleviate liver fibrosis in the BDL mice and promote liver regeneration via the ID1-WNT2/HGF pathway in PH mice. In addition, Id1 knockdown abolished the protection afforded by UDCA in BDL mice. CONCLUSIONS We conclude that UDCA protects against liver fibrosis by proregeneration via activation of the ID1-WNT2/HGF pathway.
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Affiliation(s)
- Xi Dong
- Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational MedicineInstitute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical SciencesBeijing100193P. R. China
- Key Laboratory of New Drug Discovery Based on Classic Chinese Medicine PrescriptionChinese Academy of Medical SciencesBeijing100193P. R. China
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant DevelopmentChinese Academy of Medical Sciences & Peking Union Medical CollegeBeijing100193P. R. China
- Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Institute of Medicinal Plant DevelopmentPeking Union Medical College and Chinese Academy of Medical SciencesBeijing100193P. R. China
| | - Yun Luo
- Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational MedicineInstitute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical SciencesBeijing100193P. R. China
- Key Laboratory of New Drug Discovery Based on Classic Chinese Medicine PrescriptionChinese Academy of Medical SciencesBeijing100193P. R. China
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant DevelopmentChinese Academy of Medical Sciences & Peking Union Medical CollegeBeijing100193P. R. China
- Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Institute of Medicinal Plant DevelopmentPeking Union Medical College and Chinese Academy of Medical SciencesBeijing100193P. R. China
| | - Shan Lu
- Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational MedicineInstitute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical SciencesBeijing100193P. R. China
- Key Laboratory of New Drug Discovery Based on Classic Chinese Medicine PrescriptionChinese Academy of Medical SciencesBeijing100193P. R. China
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant DevelopmentChinese Academy of Medical Sciences & Peking Union Medical CollegeBeijing100193P. R. China
- Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Institute of Medicinal Plant DevelopmentPeking Union Medical College and Chinese Academy of Medical SciencesBeijing100193P. R. China
| | - Han Ma
- School of Traditional Chinese MedicineCapital Medical UniversityBeijingP. R. China
| | - Wenchao Zhang
- College of Life Science and TechnologyBeijing University of Chemical TechnologyBeijingP. R. China
| | - Yue Zhu
- Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational MedicineInstitute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical SciencesBeijing100193P. R. China
- Key Laboratory of New Drug Discovery Based on Classic Chinese Medicine PrescriptionChinese Academy of Medical SciencesBeijing100193P. R. China
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant DevelopmentChinese Academy of Medical Sciences & Peking Union Medical CollegeBeijing100193P. R. China
- Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Institute of Medicinal Plant DevelopmentPeking Union Medical College and Chinese Academy of Medical SciencesBeijing100193P. R. China
| | - Guibo Sun
- Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational MedicineInstitute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical SciencesBeijing100193P. R. China
- Key Laboratory of New Drug Discovery Based on Classic Chinese Medicine PrescriptionChinese Academy of Medical SciencesBeijing100193P. R. China
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant DevelopmentChinese Academy of Medical Sciences & Peking Union Medical CollegeBeijing100193P. R. China
- Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Institute of Medicinal Plant DevelopmentPeking Union Medical College and Chinese Academy of Medical SciencesBeijing100193P. R. China
| | - Xiaobo Sun
- Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational MedicineInstitute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical SciencesBeijing100193P. R. China
- Key Laboratory of New Drug Discovery Based on Classic Chinese Medicine PrescriptionChinese Academy of Medical SciencesBeijing100193P. R. China
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant DevelopmentChinese Academy of Medical Sciences & Peking Union Medical CollegeBeijing100193P. R. China
- Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Institute of Medicinal Plant DevelopmentPeking Union Medical College and Chinese Academy of Medical SciencesBeijing100193P. R. China
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Barancik M, Kura B, LeBaron TW, Bolli R, Buday J, Slezak J. Molecular and Cellular Mechanisms Associated with Effects of Molecular Hydrogen in Cardiovascular and Central Nervous Systems. Antioxidants (Basel) 2020; 9:antiox9121281. [PMID: 33333951 PMCID: PMC7765453 DOI: 10.3390/antiox9121281] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 12/12/2020] [Accepted: 12/13/2020] [Indexed: 02/06/2023] Open
Abstract
The increased production of reactive oxygen species and oxidative stress are important factors contributing to the development of diseases of the cardiovascular and central nervous systems. Molecular hydrogen is recognized as an emerging therapeutic, and its positive effects in the treatment of pathologies have been documented in both experimental and clinical studies. The therapeutic potential of hydrogen is attributed to several major molecular mechanisms. This review focuses on the effects of hydrogen on the cardiovascular and central nervous systems, and summarizes current knowledge about its actions, including the regulation of redox and intracellular signaling, alterations in gene expressions, and modulation of cellular responses (e.g., autophagy, apoptosis, and tissue remodeling). We summarize the functions of hydrogen as a regulator of nuclear factor erythroid 2-related factor 2 (Nrf2)-mediated redox signaling and the association of hydrogen with mitochondria as an important target of its therapeutic action. The antioxidant functions of hydrogen are closely associated with protein kinase signaling pathways, and we discuss possible roles of the phosphoinositide 3-kinase/protein kinase B (PI3K/Akt) and Wnt/β-catenin pathways, which are mediated through glycogen synthase kinase 3β and its involvement in the regulation of cellular apoptosis. Additionally, current knowledge about the role of molecular hydrogen in the modulation of autophagy and matrix metalloproteinases-mediated tissue remodeling, which are other responses to cellular stress, is summarized in this review.
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Affiliation(s)
- Miroslav Barancik
- Centre of Experimental Medicine, Slovak Academy of Sciences, 84104 Bratislava, Slovakia; (M.B.); (B.K.); (T.W.L.)
| | - Branislav Kura
- Centre of Experimental Medicine, Slovak Academy of Sciences, 84104 Bratislava, Slovakia; (M.B.); (B.K.); (T.W.L.)
- Faculty of Medicine, Institute of Physiology, Comenius University in Bratislava, 84215 Bratislava, Slovakia
| | - Tyler W. LeBaron
- Centre of Experimental Medicine, Slovak Academy of Sciences, 84104 Bratislava, Slovakia; (M.B.); (B.K.); (T.W.L.)
- Molecular Hydrogen Institute, Enoch, UT 84721, USA
- Department of Kinesiology and Outdoor Recreation, Southern Utah University, Cedar City, UT 84720, USA
| | - Roberto Bolli
- Department of Medicine, Institute of Molecular Cardiology, University of Louisville, Louisville, KY 40292, USA;
| | - Jozef Buday
- Department of Psychiatry, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, 12108 Prague, Czech Republic;
| | - Jan Slezak
- Centre of Experimental Medicine, Slovak Academy of Sciences, 84104 Bratislava, Slovakia; (M.B.); (B.K.); (T.W.L.)
- Correspondence: ; Tel.: +42-19-03-620-181
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JLX001 attenuates blood-brain barrier dysfunction in MCAO/R rats via activating the Wnt/β-catenin signaling pathway. Life Sci 2020; 260:118221. [PMID: 32768578 DOI: 10.1016/j.lfs.2020.118221] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 07/28/2020] [Accepted: 08/03/2020] [Indexed: 12/19/2022]
Abstract
JLX001, a new dihydrochloride of Cyclovirobuxine D (CVB-D), has bioactivities against ischemia injury. The blood-brain barrier (BBB) disruption is involved in the pathogeneses of ischemic stroke. This study was designed to explore the effect and potential mechanism of JLX001 on the BBB after ischemic stroke. Rats were subjected to middle cerebral artery occlusion/reperfusion (MCAO/R) to mimic cerebral ischemia in vivo. In vitro, rat primary brain microvascular endothelial cells (PBMECs) were cultured and exposed to oxygen-glucose deprivation/reoxygenation (OGD/R). Posttreatment of JLX001 for 15 days after MCAO/R improved the behavior, learning and memory ability. Pretreatment of JLX001 for 3 days significantly attenuated infarct volume, lessened brain edema, mitigated BBB disruption and decreased the neurological deficit score in MCAO/R rats. Moreover, JLX001 increased cell viability and reduced sodium fluorescein leakage after OGD/R injury. In addition, JLX001 increased the expressions of Claudin-5 and Occludin, decreased the expression of MMP-9 both in vivo and in vitro. Moreover, immunofluorescence staining and western immunoblotting results showed that JLX001 increased the expressions of tight junction proteins via activating Wnt/β-catenin signal pathway in vivo and in vitro, which may be associated with the activation of PI3K/Akt signaling. Besides, XAV939 (an inhibitor of the Wnt/β-catenin pathway) proved the connection of JLX001 and Wnt/β-catenin pathway. These results suggest that JLX001 alleviates BBB disruption after MCAO/R and OGD/R possibly by alleviating MMP-9 and activating the Wnt/β-catenin signaling pathway.
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Sun Z, Xu S, Cai Q, Zhou W, Jiao X, Bao M, Yu X. Wnt/β-catenin agonist BIO alleviates cisplatin-induced nephrotoxicity without compromising its efficacy of anti-proliferation in ovarian cancer. Life Sci 2020; 263:118672. [PMID: 33121990 DOI: 10.1016/j.lfs.2020.118672] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 10/21/2020] [Accepted: 10/22/2020] [Indexed: 12/14/2022]
Abstract
AIMS Cisplatin is an anticancer agent marred by nephrotoxicity. Limiting this adverse effect may allow the use of higher doses to improve its efficacy. The Wnt/β-catenin signaling pathway plays a critical role in nephrogenesis and repair of renal diseases. BIO, a small molecule agonist of this pathway, exerted a protective effect in adriamycin nephropathy and promoted nephrogenesis. The aim of this study, therefore, was to investigate whether Wnt/β-catenin agonist BIO could protect against cisplatin-induced nephrotoxicity in vivo and in vitro, as well as its possible mechanism. MAIN METHODS Male mice and human renal proximal tubular cells (HK-2) were subjected to cisplatin to study reno-protective effect of BIO. Renal function, cell viability, tubular apoptosis, production of reactive oxygen species (ROS) and proliferative level were analyzed respectively. Additionally, xenograft model was induced to investigate if BIO would impair the antitumor effect of cisplatin. KEY FINDINGS Cisplatin increased serum creatinine levels and promoted histological renal injury as well as oxidative stress levels. Besides, renal apoptotic level and the expression of pro-apoptotic proteins, Bax/bcl-2 and cleaved-caspase3 included, in the kidney were increased. All these features were decreased by BIO, which also activated Wnt/β-catenin pathway in cisplatin-induced nephrotoxicity. Similarly, accompanied by the motivation of Wnt/β-catenin pathway, BIO exerted a positively protective effect on HK-2 challenged cisplatin. Last, the chemotherapeutic effects of cisplatin in xenograft mice of ovary tumor models and in lung cancer cells weren't compromised by BIO. SIGNIFICANCE Wnt/β-catenin agonist BIO has the potential to prevent cisplatin nephrotoxicity without compromising its anti-proliferation efficacy.
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Affiliation(s)
- Zhaoxing Sun
- Department of Nephrology, Zhongshan Hospital, Fudan University, China; Shanghai Medical Center for Kidney, China; Shanghai Key Laboratory of Kidney and Blood Purifcation, China
| | - Sujuan Xu
- Department of Nephrology, Zhongshan Hospital, Fudan University, China; Shanghai Medical Center for Kidney, China; Shanghai Key Laboratory of Kidney and Blood Purifcation, China
| | - Qiaoting Cai
- Department of Nephrology, Zhongshan Hospital, Fudan University, China; Shanghai Medical Center for Kidney, China; Shanghai Key Laboratory of Kidney and Blood Purifcation, China
| | - Weiran Zhou
- Department of Nephrology, Zhongshan Hospital, Fudan University, China; Shanghai Medical Center for Kidney, China; Shanghai Key Laboratory of Kidney and Blood Purifcation, China
| | - Xiaoyan Jiao
- Department of Nephrology, Zhongshan Hospital, Fudan University, China; Shanghai Medical Center for Kidney, China; Shanghai Key Laboratory of Kidney and Blood Purifcation, China
| | - Manchen Bao
- Department of Nephrology, Zhongshan Hospital, Fudan University, China; Shanghai Medical Center for Kidney, China; Shanghai Key Laboratory of Kidney and Blood Purifcation, China
| | - Xiaofang Yu
- Department of Nephrology, Zhongshan Hospital, Fudan University, China; Shanghai Medical Center for Kidney, China; Shanghai Key Laboratory of Kidney and Blood Purifcation, China; Shanghai Institute of Kidney and Dialysis, Shanghai, China.
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Chen X, Yao Z, Peng X, Wu L, Wu H, Ou Y, Lai J. Eupafolin alleviates cerebral ischemia/reperfusion injury in rats via blocking the TLR4/NF‑κB signaling pathway. Mol Med Rep 2020; 22:5135-5144. [PMID: 33173992 PMCID: PMC7646971 DOI: 10.3892/mmr.2020.11637] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 09/11/2020] [Indexed: 12/20/2022] Open
Abstract
Eupatorium perfoliatum L. (E. perfoliatium) has been used traditionally for treating fever, malaria and inflammation‑associated diseases. Eupafolin, the extract of E. perfoliatium, was also reported to suppress inflammation. The present study aimed to investigate the protective effects of eupafolin on cerebral ischemia/reperfusion (I/R) injury in rats and its possible underlying mechanisms. Cerebral I/R injury was induced in rats by middle cerebral artery occlusion (MCAO) for 1.5 h, followed by reperfusion. The rats were randomly assigned into six groups: Control, model, 10 mg/kg eupafolin, 20 mg/kg eupafolin, 50 mg/kg eupafolin and 20 mg/kg nimodipine. Eupafolin and nimodipine were intragastrically administrated to the rats 1 week before MCAO induction. Following reperfusion for 24 h, the neurological deficit was scored, and brain samples were harvested for evaluating encephaledema, infarct volume, oxidative stress, apoptosis, inflammation and the expression of TLR4/NF‑κB signaling. The results revealed that eupafolin decreased the neurological score, relieved encephaledema and decreased infarct volume. Eupafolin also attenuated oxidative stress, neuronal apoptosis and inflammation, with decreases in lactate dehydrogenase, malondialdehyde, TUNEL‑positive cells, Bax and caspase‑3, along with TNF‑α, IL‑1β and IL‑6, but increases in superoxide dismutase and Bcl‑2 levels. Furthermore, eupafolin may decrease the expression of TLR4 downstream proteins and proteins involved in the NF‑κB pathway. Treatment with TLR4 agonist‑LPS significantly blunted the protective effect of eupafolin on encephaledema and cerebral infarct. Meanwhile, 20 mg/kg eupafolin showed nearly equivalent effects to the positive‑control drug nimodipine. In conclusion, eupafolin protected against cerebral I/R injury in rats and the underlying mechanism may be associated with the suppression of apoptosis and inflammation via inhibiting the TLR4/ NF‑κB signaling pathway.
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Affiliation(s)
- Xingwang Chen
- Department of Intensive Care Unit, Shenzhen Hospital of Integrated Traditional Chinese and Western Medicine, Shenzhen, Guangdong 518104, P.R. China
| | - Zhijun Yao
- Department of Intensive Care Unit, Shenzhen Hospital of Integrated Traditional Chinese and Western Medicine, Shenzhen, Guangdong 518104, P.R. China
| | - Xian Peng
- Department of Intensive Care Unit, Shenzhen Hospital of Integrated Traditional Chinese and Western Medicine, Shenzhen, Guangdong 518104, P.R. China
| | - Long Wu
- Department of Intensive Care Unit, Shenzhen Hospital of Integrated Traditional Chinese and Western Medicine, Shenzhen, Guangdong 518104, P.R. China
| | - Huachu Wu
- Department of Intensive Care Unit, Shenzhen Hospital of Integrated Traditional Chinese and Western Medicine, Shenzhen, Guangdong 518104, P.R. China
| | - Yuantong Ou
- Department of Intensive Care Unit, Shenzhen Hospital of Integrated Traditional Chinese and Western Medicine, Shenzhen, Guangdong 518104, P.R. China
| | - Jianbo Lai
- Department of Intensive Care Unit, Shenzhen Hospital of Integrated Traditional Chinese and Western Medicine, Shenzhen, Guangdong 518104, P.R. China
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Ye C, Qi W, Dai S, Zou G, Liu W, Yu B, Tang J. microRNA-223 promotes autophagy to aggravate lung ischemia-reperfusion injury by inhibiting the expression of transcription factor HIF2α. Am J Physiol Lung Cell Mol Physiol 2020; 319:L1-L10. [PMID: 32267722 DOI: 10.1152/ajplung.00009.2020] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Lung ischemia-reperfusion (I/R) injury severely endangers human health, and recent studies have suggested that certain microRNAs (miRNAs) play important roles in this pathological phenomenon. The current study aimed to ascertain the ability of miR-223 to influence lung I/R injury by targeting hypoxia-inducible factor-2α (HIF2α). First, mouse models of lung I/R injury were established: during surgical procedures, pulmonary arteries and veins and unilateral pulmonary portal vessels were blocked and resuming bilateral pulmonary ventilation, followed by restoration of bipulmonary ventilation. In addition, a lung I/R injury cell model was constructed by exposure to hypoxic reoxygenation (H/R) in mouse pulmonary microvascular endothelial cells (PMVECs). Expression of miR-223, HIF2α and β-catenin in tissues or cells was determined by RT-qPCR and Western blot analysis. Correlation between miR-223 and HIF2α was analyzed by dual luciferase reporter gene assay. Further, lung tissue injury and mouse PMVEC apoptosis was evaluated by HE, TUNEL staining and flow cytometry. Autophagosomes in cells were detected by light chain3 immunofluorescence assay. miR-223 was expressed at a high level while HIF2α/β-catenin was downregulated in tissues and cells with lung I/R injury. Further, miR-223 targeted and repressed HIF2α expression to downregulate β-catenin expression. The miR-223/HIF2α/β-catenin axis aggravated H/R injury in mouse PMVECs and lung I/R injury in mice by enhancing autophagy. Taken together, miR-223 inhibits HIF2α to repress β-catenin, thus contributing to autophagy to complicate lung I/R injury. These findings provide a promising therapeutic target for treating lung I/R injury.
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Affiliation(s)
- Chunlin Ye
- Department of Thoracic Surgery, The First Affiliated Hospital of Nanchang University, China
| | - Wanghong Qi
- Department of Thoracic Surgery, The First Affiliated Hospital of Nanchang University, China
| | - Shaohua Dai
- Department of Thoracic Surgery, The First Affiliated Hospital of Nanchang University, China
| | - Guowen Zou
- Department of Thoracic Surgery, The First Affiliated Hospital of Nanchang University, China
| | - Weicheng Liu
- Department of Anesthesiology, the First Affiliated Hospital of Nanchang University
| | - Bentong Yu
- Department of Thoracic Surgery, The First Affiliated Hospital of Nanchang University, China
| | - Jian Tang
- Thoracic Surgery, the First Affiliated Hospital of Nanchang University, China
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