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Ma XX, Xie HY, Hou PP, Wang XJ, Zhou W, Wang ZH. Nuclear Factor Erythroid 2-Related Factor 2 is Essential for Low-Normobaric Oxygen Treatment-Mediated Blood-Brain Barrier Protection Following Ischemic Stroke. Mol Neurobiol 2024; 61:2938-2948. [PMID: 37950788 DOI: 10.1007/s12035-023-03767-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 11/01/2023] [Indexed: 11/13/2023]
Abstract
Cerebral ischemia/reperfusion (I/R) injury increases blood-brain barrier (BBB) permeability, leading to hemorrhagic transformation and brain edema. Normobaric oxygen (NBO) is a routine clinical treatment strategy for this condition. However, its neuroprotective effects remain controversial. This study investigated the effect of different NBO concentrations on I/R injury and explores the involvement of the nuclear factor erythroid 2-related factor 2 (Nrf2) pathway in the underlying mechanism. A mouse middle cerebral artery occlusion (MCAO) model, and an oxygen and glucose deprivation (OGD) model featuring mouse brain microvascular endothelial cells (ECs) called bEnd.3, were used to investigate the effect of NBO on I/R injury. A reactive oxygen species (ROS) inducer and Nrf2-knockdown by RNA were used to explore whether the Nrf2 pathway mediates the effect of NBO on cerebrovascular ECs. In the early stage of MCAO, 40% O2 NBO exposure significantly improved blood perfusion in the ischemic area and effectively relieved BBB permeability, cerebral edema, cerebral injury, and neurological function after MCAO. In the OGD model, 40% O2 NBO exposure significantly reduced apoptosis, inhibited ROS generation, reduced ER stress, upregulated the expression of tight junction proteins, and stabilized the permeability of ECs. Blocking the Nrf2 pathway nullified the protective effect of 40% O2 NBO on ECs after OGD. Finally, our study confirmed that low concentrations of NBO have a neuroprotective effect on I/R by activating the Nrf2 pathway in ECs.
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Affiliation(s)
- Xiao-Xiao Ma
- Department of Anesthesiology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hai-Yi Xie
- Department of Anesthesiology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Pin-Pin Hou
- Central Laboratory, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Xiao-Jing Wang
- Department of Anesthesiology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wei Zhou
- Department of Anesthesiology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Zhen-Hong Wang
- Department of Anesthesiology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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Gao L, Liu F, Hou PP, Manaenko A, Xiao ZP, Wang F, Xu TL, Hu Q. Neurons Release Injured Mitochondria as “Help-Me” Signaling After Ischemic Stroke. Front Aging Neurosci 2022; 14:785761. [PMID: 35309888 PMCID: PMC8926840 DOI: 10.3389/fnagi.2022.785761] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 01/17/2022] [Indexed: 12/12/2022] Open
Abstract
Mitochondrial dysfunction has been regarded as one of the major contributors of ischemic neuronal death after stroke. Recently, intercellular mitochondrial transfer between different cell types has been widely studied and suggested as a potential therapeutic approach. However, whether mitochondria are involved in the neuron-glia cross-talk following ischemic stroke and the underlying mechanisms have not been explored yet. In this study, we demonstrated that under physiological condition, neurons release few mitochondria into the extracellular space, and the mitochondrial release increased when subjected to the challenges of acidosis, hydrogen peroxide (H2O2), N-methyl-D-aspartate (NMDA), or glutamate. Acidosis reduced the mitochondrial basal respiration and lowered the membrane potential in primary-cultured mouse cortical neurons. These defective mitochondria were prone to be expelled to the extracellular space by the injured neurons, and were engulfed by adjacent astrocytes, leading to increased astrocytic expressions of mitochondrial Rho GTPase 1 (Miro 1) and mitochondrial transcription factor A (TFAM) at mRNA level. In mice subjected to transient focal cerebral ischemia, the number of defective mitochondria in the cerebrospinal fluid increased. Our results suggested that the neuron-derived mitochondria may serve as a “help-me” signaling and mediate the neuron-astrocyte cross-talk following ischemic stroke. Promoting the intercellular mitochondrial transfer by accelerating the neuronal releasing or astrocytic engulfing might be a potential and attractive therapeutic strategy for the treatment of ischemic stroke in the future.
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Affiliation(s)
- Li Gao
- Central Laboratory, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Cerebrovascular Disease Center, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Fan Liu
- Department of Anatomy and Physiology, Collaborative Innovation Center for Brain Science, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Pin-Pin Hou
- Central Laboratory, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Anatol Manaenko
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zhi-Peng Xiao
- Cerebrovascular Disease Center, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Fei Wang
- Cerebrovascular Disease Center, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Tian-Le Xu
- Department of Anatomy and Physiology, Collaborative Innovation Center for Brain Science, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- *Correspondence: Tian-Le Xu,
| | - Qin Hu
- Central Laboratory, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Qin Hu,
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Zhang JS, Hou PP, Shao S, Manaenko A, Xiao ZP, Chen Y, Zhao B, Jia F, Zhang XH, Mei QY, Hu Q. microRNA-455-5p alleviates neuroinflammation in cerebral ischemia/reperfusion injury. Neural Regen Res 2022; 17:1769-1775. [PMID: 35017437 PMCID: PMC8820705 DOI: 10.4103/1673-5374.332154] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Neuroinflammation is a major pathophysiological factor that results in the development of brain injury after cerebral ischemia/reperfusion. Downregulation of microRNA (miR)-455-5p after ischemic stroke has been considered a potential biomarker and therapeutic target for neuronal injury after ischemia. However, the role of miR-455-5p in the post-ischemia/reperfusion inflammatory response and the underlying mechanism have not been evaluated. In this study, mouse models of cerebral ischemia/reperfusion injury were established by transient occlusion of the middle cerebral artery for 1 hour followed by reperfusion. Agomir-455-5p, antagomir-455-5p, and their negative controls were injected intracerebroventricularly 2 hours before or 0 and 1 hour after middle cerebral artery occlusion (MCAO). The results showed that cerebral ischemia/reperfusion decreased miR-455-5p expression in the brain tissue and the peripheral blood. Agomir-455-5p pretreatment increased miR-455-5p expression in the brain tissue, reduced the cerebral infarct volume, and improved neurological function. Furthermore, primary cultured microglia were exposed to oxygen-glucose deprivation for 3 hours followed by 21 hours of reoxygenation to mimic cerebral ischemia/reperfusion. miR-455-5p reduced C-C chemokine receptor type 5 mRNA and protein levels, inhibited microglia activation, and reduced the production of the inflammatory factors tumor necrosis factor-α and interleukin-1β. These results suggest that miR-455-5p is a potential biomarker and therapeutic target for the treatment of cerebral ischemia/reperfusion injury and that it alleviates cerebral ischemia/reperfusion injury by inhibiting C-C chemokine receptor type 5 expression and reducing the neuroinflammatory response.
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Affiliation(s)
- Jian-Song Zhang
- Central Laboratory, Renji Hospital; Department of Neurosurgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Pin-Pin Hou
- Central Laboratory, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shuai Shao
- Department of Neurosurgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Anatol Manaenko
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zhi-Peng Xiao
- Department of Neurosurgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yan Chen
- Department of Medical Genetics, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Bing Zhao
- Department of Neurosurgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Feng Jia
- Department of Neurosurgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiao-Hua Zhang
- Department of Neurosurgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qi-Yong Mei
- Department of Neurosurgery, Changzheng Hospital, the Second Military Medical University, Shanghai, China
| | - Qin Hu
- Central Laboratory, Renji Hospital; Department of Neurosurgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Xiao ZP, Lv T, Hou PP, Manaenko A, Liu Y, Jin Y, Gao L, Jia F, Tian Y, Li P, Zhang JH, Hu Q, Zhang X. Sirtuin 5-Mediated Lysine Desuccinylation Protects Mitochondrial Metabolism Following Subarachnoid Hemorrhage in Mice. Stroke 2021; 52:4043-4053. [PMID: 34807744 DOI: 10.1161/strokeaha.121.034850] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND AND PURPOSE Sirt5 (Sirtuin 5) desuccinylates multiple metabolic enzymes and plays an important role in maintaining energy homeostasis. The goal of this study was to determine whether Sirt5-mediated desuccinylation restores the energy metabolism and protects brain against subarachnoid hemorrhage (SAH). METHODS Male C57BL/6 or Sirt5-/- mice were used. The endovascular perforation SAH model was applied. Protein lysine succinylation in the brain cortex was examined using liquid chromatography-tandem mass spectrometry analysis. The brain metabolism was evaluated by measurement of brain pH as well as ATP and reactive oxygen species level. Neuronal cell death and neurobehavioral deficits were assessed 24 hours after SAH. The expression and desuccinylation activity of Sirt5, lysine succinylation of citrate synthase and ATP synthase subunits were investigated by Western blot, immunohistochemistry, and ELISA in SAH mice and patients. Furthermore, the benefits of resveratrol-mediated Sirt5 activation were investigated. RESULTS A total of 211 lysine succinylation sites were differentially expressed on 170 proteins in mice brain after SAH. Thirty-nine percent of these succinylated proteins were localized in mitochondria and they are related to energy metabolism. SAH caused a decrease of Sirt5 expression and succinylated citrate synthase as well as the subunits of ATP synthase, subsequently lowered brain pH, reduced ATP and increased reactive oxygen species production, leading to neuronal cell death, and neurological deficits. Knockdown of Sirt5 aggravated SAH-induced effects, mentioned above. Administration of resveratrol resulted in activation of Sirt5. The activation was accompanied both with restoration of the mitochondrial metabolism and alleviation of early brain injury as well as with desuccinylating citrate synthase and ATP synthase. CONCLUSIONS Protein lysine succinylation is a biochemical hallmark of metabolic crisis after SAH, and disruption of lysine succinylation through activation of Sirt5 might be a promising therapeutic strategy for the treatment of SAH.
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Affiliation(s)
- Zhi-Peng Xiao
- Department of Neurosurgery (Z.-P.X., T.L., Y.J., F.J., Q.H., X.Z.), Renji Hospital, Shanghai Jiao Tong University School of Medicine, China
| | - Tao Lv
- Department of Neurosurgery (Z.-P.X., T.L., Y.J., F.J., Q.H., X.Z.), Renji Hospital, Shanghai Jiao Tong University School of Medicine, China
| | - Pin-Pin Hou
- Central Laboratory (P.-P.H., L.G., Q.H.), Renji Hospital, Shanghai Jiao Tong University School of Medicine, China
| | - Anatol Manaenko
- National Health Commission Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, The First Affiliated Hospital of Chongqing Medical University, China (A.M.)
| | - Yuandong Liu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering East China Normal University, China (Y.L., Y.T.)
| | - Yichao Jin
- Department of Neurosurgery (Z.-P.X., T.L., Y.J., F.J., Q.H., X.Z.), Renji Hospital, Shanghai Jiao Tong University School of Medicine, China
| | - Li Gao
- Central Laboratory (P.-P.H., L.G., Q.H.), Renji Hospital, Shanghai Jiao Tong University School of Medicine, China
| | - Feng Jia
- Department of Neurosurgery (Z.-P.X., T.L., Y.J., F.J., Q.H., X.Z.), Renji Hospital, Shanghai Jiao Tong University School of Medicine, China
| | - Yang Tian
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering East China Normal University, China (Y.L., Y.T.)
| | - Peiying Li
- Department of Anesthesiology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, China (P.L.)
| | - John H Zhang
- Department of Physiology and Pharmacology, Loma Linda University, CA (J.H.Z.)
| | - Qin Hu
- Department of Neurosurgery (Z.-P.X., T.L., Y.J., F.J., Q.H., X.Z.), Renji Hospital, Shanghai Jiao Tong University School of Medicine, China.,Central Laboratory (P.-P.H., L.G., Q.H.), Renji Hospital, Shanghai Jiao Tong University School of Medicine, China
| | - Xiaohua Zhang
- Department of Neurosurgery (Z.-P.X., T.L., Y.J., F.J., Q.H., X.Z.), Renji Hospital, Shanghai Jiao Tong University School of Medicine, China
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Lin Z, Xie YZ, Zhao MC, Hou PP, Tang J, Chen GL. Xanthine dehydrogenase as a prognostic biomarker related to tumor immunology in hepatocellular carcinoma. Cancer Cell Int 2021; 21:475. [PMID: 34496841 PMCID: PMC8425161 DOI: 10.1186/s12935-021-02173-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 08/23/2021] [Indexed: 01/10/2023] Open
Abstract
Background Xanthine dehydrogenase (XDH) is a critical enzyme involved in the oxidative metabolism of purines, pterin and aldehydes and a central component of the innate immune system. However, the prognostic value of XDH in predicting tumor-infiltrating lymphocyte abundance, the immune response, and survival in different cancers, including hepatocellular carcinoma (HCC), is still unclear. Methods XDH expression was analyzed in multiple databases, including Oncomine, the Tumor Immune Estimation Resource (TIMER), the Kaplan–Meier plotter database, the Gene Expression Profiling Interactive Analysis (GEPIA) database, and The Cancer Genome Atlas (TCGA). XDH-associated transcriptional profiles were detected with an mRNA array, and the levels of infiltrating immune cells were validated by immunohistochemistry (IHC) of HCC tissues. A predictive signature containing multiple XDH-associated immune genes was established using the Cox regression model. Results Decreased XDH mRNA expression was detected in human cancers originating from the liver, bladder, breast, colon, bile duct, kidney, and hematolymphoid system. The prognostic potential of XDH mRNA expression was also significant in certain other cancers, including HCC, breast cancer, kidney or bladder carcinoma, gastric cancer, mesothelioma, lung cancer, and ovarian cancer. In HCC, a low XDH mRNA level predicted poorer overall survival, disease-specific survival, disease-free survival, and progression-free survival. The prognostic value of XDH was independent of the clinical features of HCC patients. Indeed, XDH expression in HCC activated several immune-related pathways, including the T cell receptor, PI3K-AKT, and MAPK signaling pathways, which induced a cytotoxic immune response. Importantly, the microenvironment of XDHhigh HCC tumors contained abundant infiltrating CD8 + T cells but not exhausted T cells. A risk prediction signature based on multiple XDH-associated immune genes was revealed as an independent predictor in the TCGA liver cancer cohort. Conclusion These findings suggest that XDH is a valuable prognostic biomarker in HCC and other cancers and indicate that it may function in tumor immunology. Loss of XDH expression may be an immune evasion mechanism for HCC. Supplementary Information The online version contains supplementary material available at 10.1186/s12935-021-02173-7.
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Affiliation(s)
- Zhen Lin
- Department of Oncology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, 310003, China.,Department of Internal Medicine 3, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, 91054, Erlangen, Germany
| | - Yi-Zhao Xie
- Department of Medical Oncology, Fudan University, Shanghai Cancer Center, Shanghai, 200032, China.,Department of Oncology, Shanghai Medical College of Fudan University, Shanghai, 200032, China
| | - Ming-Chun Zhao
- Department of Pathology, Guilin Hospital of Chinese Traditional and Western Medicine, Guilin, 541004, China
| | - Pin-Pin Hou
- Central Laboratory, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 201114, China
| | - Juan Tang
- Department of Pathology, The Second Affiliated Hospital of Guilin Medical University, Guilin, 541199, China.
| | - Guang-Liang Chen
- Department of Medical Oncology, Fudan University, Shanghai Cancer Center, Shanghai, 200032, China. .,Department of Oncology, Shanghai Medical College of Fudan University, Shanghai, 200032, China.
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Ma ZL, Hou PP, Li YL, Wang DT, Yuan TW, Wei JL, Zhao BT, Lou JT, Zhao XT, Jin Y, Jin YX. MicroRNA-34a inhibits the proliferation and promotes the apoptosis of non-small cell lung cancer H1299 cell line by targeting TGFβR2. Tumour Biol 2014; 36:2481-90. [PMID: 25501507 DOI: 10.1007/s13277-014-2861-5] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Accepted: 11/14/2014] [Indexed: 12/19/2022] Open
Abstract
MicroRNAs (MiRNAs) are small non-coding RNA molecules which act as important regulators of post-transcriptional gene expression by binding 3'-untranslated region (3'-UTR) of target messenger RNA (mRNA). In this study, we analyzed miRNA-34a (miR-34a) as a tumor suppressor in non-small cell lung cancer (NSCLC) H1299 cell line. The expression level of miR-34a in four different NSCLC cell lines, H1299, A549, SPCA-1, and HCC827, was significantly lower than that in the non-tumorigenic bronchial epithelium cell line BEAS-2B. In human NSCLC tissues, miR-34a expression level was also significantly decreased in pT2-4 compared with the pT1 group. Moreover, miR-34a mimic could inhibit the proliferation and triggered apoptosis in H1299 cells. Luciferase assays revealed that miR-34a inhibited TGFβR2 expression by targeting one binding site in the 3'-UTR of TGFβR2 mRNA. Quantitative real-time PCR (qRT-PCR) and Western blot assays verified that miR-34a reduced TGFβR2 expression at both mRNA and protein levels. Furthermore, downregulation of TGFβR2 by siRNA showed the same effects on the proliferation and apoptosis as miR-34a mimic in H1299 cells. Our results demonstrated that miR-34a could inhibit the proliferation and promote the apoptosis of H1299 cells partially through the downregulation of its target gene TGFβR2.
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Affiliation(s)
- Zhong-Liang Ma
- School of Life Sciences, Shanghai University, Shanghai, 200444, China
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