1
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Wang H, Xie Y, Wang X, Geng X, Gao L. Characterization of the RACK1 gene of Aips cerana cerana and its role in adverse environmental stresses. Comp Biochem Physiol B Biochem Mol Biol 2023; 263:110796. [PMID: 35973656 DOI: 10.1016/j.cbpb.2022.110796] [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: 05/10/2022] [Revised: 08/05/2022] [Accepted: 08/10/2022] [Indexed: 11/23/2022]
Abstract
Receptors for Activated C Kinase 1 (RACK1s) are a kind of multifunction scaffold protein that plays an important role in cell signal transductions and animal development. However, the function of RACK1 in the Chinese honeybee Apis cerana cerana is little known. Here, we isolated and identified a RACK1 gene from Apis cerana cerana, named AccRACK1. By bioinformatic analysis, we revealed a high nucleic acid homology between AccRACK1 and RACK1 of Apis cerana. RT-qPCR analyses demonstrated AccRACK1 was mostly expressed in 3rd instar larvae, darked-eyed pupae and adults (one and thirty days post-emergence), suggesting it might participate in the development of A. cerana cerana. Moreover, the expression of AccRACK1 was highest in the thorax, followed by the venom gland. Compared to the blank control group, AccRACK1 was induced by 24 and 44 °C, HgCl2 and pesticides (paraquat, pyridaben and methomyl) but inhibited by 14 °C, H2O2, UV light and cyhalothrin. Additionally, 0.05, 0.1, 1, 5 and 10 mg/ml PPN (juvenile hormone analogue pyriproxyfen) could promote the expression of AccRACK1, with 1 mg/ml showing the highest upregulation, suggesting it was regulated by hormones. Further study found that after knockdown of AccRACK1 by RNAi, the expression of the eukaryotic initiation factor 6 of A. cerana cerana (AcceIF6), an initiation factor regulating the initiation of translation, was inhibited, indicating AccRACK1 might affect cellular responses by translation. These findings, taken together, suggest AccRACK1 is involved in the development and responses to abiotic stresses of A. cerana cerana, and therefore, it may be of critical importance to the survival of A. cerana cerana.
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Affiliation(s)
- Hongfei Wang
- College of Life Sciences, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, Shandong, China
| | - Yucai Xie
- College of Life Sciences, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, Shandong, China
| | - Xiaoqing Wang
- College of Life Sciences, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, Shandong, China
| | - Xiaoshan Geng
- College of Life Sciences, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, Shandong, China
| | - Lijun Gao
- College of Life Sciences, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, Shandong, China.
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2
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Oxidative Stress and Emergence of Psychosis. Antioxidants (Basel) 2022; 11:antiox11101870. [PMID: 36290593 PMCID: PMC9598314 DOI: 10.3390/antiox11101870] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/16/2022] [Accepted: 09/16/2022] [Indexed: 11/22/2022] Open
Abstract
Treatment and prevention strategies for schizophrenia require knowledge about the mechanisms involved in the psychotic transition. Increasing evidence suggests a redox imbalance in schizophrenia patients. This narrative review presents an overview of the scientific literature regarding blood oxidative stress markers’ evolution in the early stages of psychosis and chronic patients. Studies investigating peripheral levels of oxidative stress in schizophrenia patients, first episode of psychosis or UHR individuals were considered. A total of 76 peer-reviewed articles published from 1991 to 2022 on PubMed and EMBASE were included. Schizophrenia patients present with increased levels of oxidative damage to lipids in the blood, and decreased levels of non-enzymatic antioxidants. Genetic studies provide evidence for altered antioxidant functions in patients. Antioxidant blood levels are decreased before psychosis onset and blood levels of oxidative stress correlate with symptoms severity in patients. Finally, adjunct treatment of antipsychotics with the antioxidant N-acetyl cysteine appears to be effective in schizophrenia patients. Further studies are required to assess its efficacy as a prevention strategy. Redox imbalance might contribute to the pathophysiology of emerging psychosis and could serve as a therapeutic target for preventive or adjunctive therapies, as well as biomarkers of disease progression.
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3
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Wang L, Wang J, Guo H, Wang Y, Xu B, Guo X, Wang C. Activating transcription factor 2 (AccATF2) regulates tolerance to oxidative stress in Apis cerana cerana. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2022; 186:105179. [PMID: 35973768 DOI: 10.1016/j.pestbp.2022.105179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Revised: 07/09/2022] [Accepted: 07/19/2022] [Indexed: 06/15/2023]
Abstract
Activating transcription factor 2 (ATF2), a basic leucine zipper (bZIP) transcription factor, plays a crucial role in immune and DNA damage response in mammals. However, the function of ATF2 in insects remains unknown. Here, we isolated the ATF2 gene from Apis cerana cerana (AccATF2) and found that AccATF2 was a main regulator of the honeybee response to oxidative stress. Our results showed that AccATF2 was highly expressed in the head, thorax and integument. AccATF2 was expressed throughout the development period of honeybees, and the highest AccATF2 transcript level was noted in brown-eyed pupae, indicating its indispensable roles in honeybee survival. Antioxidant function analysis showed that AccATF2 expression was markedly induced in response to oxidative stress caused by various environmental stresses. AccATF2 overexpression substantially enhanced the tolerance to oxidative stress of Escherichia coli cells compared with control cells. AccATF2 knockdown significantly increased the production of malondialdehyde (MDA), the transcription of antioxidant genes and the activity of antioxidant enzymes in honeybees, suggesting that AccATF2 knockdown resulted in oxidative damage to honeybees. Moreover, AccATF2 knockdown decreased honeybee resistance to oxidative stress caused by high temperature. Overall, AccATF2 plays an important role in maintaining redox homeostasis and protecting honeybees from oxidative stress caused by various environmental stimuli. Our discoveries add to a growing understanding of how honeybees cope with various adverse environmental conditions to ensure their survival.
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Affiliation(s)
- Lijun Wang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong 271018, PR China
| | - Jiayu Wang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong 271018, PR China
| | - Huijuan Guo
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong 271018, PR China
| | - Ying Wang
- College of Animal Science and Technology, Shandong Agricultural University, Taian, Shandong 271018, PR China
| | - Baohua Xu
- College of Animal Science and Technology, Shandong Agricultural University, Taian, Shandong 271018, PR China
| | - Xingqi Guo
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong 271018, PR China.
| | - Chen Wang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong 271018, PR China.
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4
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Levi H, Bar E, Cohen-Adiv S, Sweitat S, Kanner S, Galron R, Mitiagin Y, Barzilai A. Dysfunction of cerebellar microglia in Ataxia-telangiectasia. Glia 2021; 70:536-557. [PMID: 34854502 DOI: 10.1002/glia.24122] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 11/09/2021] [Accepted: 11/12/2021] [Indexed: 12/13/2022]
Abstract
Ataxia-telangiectasia (A-T) is a multisystem autosomal recessive disease caused by mutations in the ATM gene and characterized by cerebellar atrophy, progressive ataxia, immunodeficiency, male and female sterility, radiosensitivity, cancer predisposition, growth retardation, insulin-resistant diabetes, and premature aging. ATM phosphorylates more than 1500 target proteins, which are involved in cell cycle control, DNA repair, apoptosis, modulation of chromatin structure, and other cytoplasmic as well as mitochondrial processes. In our quest to better understand the mechanisms by which ATM deficiency causes cerebellar degeneration, we hypothesized that specific vulnerabilities of cerebellar microglia underlie the etiology of A-T. Our hypothesis is based on the recent finding that dysfunction of glial cells affect a variety of process leading to impaired neuronal functionality (Song et al., 2019). Whereas astrocytes and neurons descend from the neural tube, microglia originate from the hematopoietic system, invade the brain at early embryonic stage, and become the innate immune cells of the central nervous system and important participants in development of synaptic plasticity. Here we demonstrate that microglia derived from Atm-/- mouse cerebellum display accelerated cell migration and are severely impaired in phagocytosis, secretion of neurotrophic factors, and mitochondrial activity, suggestive of apoptotic processes. Interestingly, no microglial impairment was detected in Atm-deficient cerebral cortex, and Atm deficiency had less impact on astroglia than microglia. Collectively, our findings validate the roles of glial cells in cerebellar attrition in A-T.
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Affiliation(s)
- Hadar Levi
- Department of Neurobiology, George S. Wise, Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Ela Bar
- Department of Neurobiology, George S. Wise, Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Stav Cohen-Adiv
- Department of Neurobiology, George S. Wise, Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Suzan Sweitat
- Department of Neurobiology, George S. Wise, Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Sivan Kanner
- Department of Neurobiology, George S. Wise, Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Ronit Galron
- Department of Neurobiology, George S. Wise, Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Yulia Mitiagin
- Department of Neurobiology, George S. Wise, Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Ari Barzilai
- Department of Neurobiology, George S. Wise, Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel.,Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
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5
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Antonelli F, Casciati A, Belles M, Serra N, Linares-Vidal MV, Marino C, Mancuso M, Pazzaglia S. Long-Term Effects of Ionizing Radiation on the Hippocampus: Linking Effects of the Sonic Hedgehog Pathway Activation with Radiation Response. Int J Mol Sci 2021; 22:ijms222212605. [PMID: 34830484 PMCID: PMC8624704 DOI: 10.3390/ijms222212605] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 11/04/2021] [Accepted: 11/17/2021] [Indexed: 12/29/2022] Open
Abstract
Radiation therapy represents one of the primary treatment modalities for primary and metastatic brain tumors. Although recent advances in radiation techniques, that allow the delivery of higher radiation doses to the target volume, reduce the toxicity to normal tissues, long-term neurocognitive decline is still a detrimental factor significantly affecting quality of life, particularly in pediatric patients. This imposes the need for the development of prevention strategies. Based on recent evidence, showing that manipulation of the Shh pathway carries therapeutic potential for brain repair and functional recovery after injury, here we evaluate how radiation-induced hippocampal alterations are modulated by the constitutive activation of the Shh signaling pathway in Patched 1 heterozygous mice (Ptch1+/-). Our results show, for the first time, an overall protective effect of constitutive Shh pathway activation on hippocampal radiation injury. This activation, through modulation of the proneural gene network, leads to a long-term reduction of hippocampal deficits in the stem cell and new neuron compartments and to the mitigation of radio-induced astrogliosis, despite some behavioral alterations still being detected in Ptch1+/- mice. A better understanding of the pathogenic mechanisms responsible for the neural decline following irradiation is essential for identifying prevention measures to contain the harmful consequences of irradiation. Our data have important translational implications as they suggest a role for Shh pathway manipulation to provide the therapeutic possibility of improving brain repair and functional recovery after radio-induced injury.
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Affiliation(s)
- Francesca Antonelli
- Division of Health Protection Technologies, Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), 00123 Rome, Italy; (A.C.); (C.M.); (M.M.)
- Correspondence: (F.A.); (S.P.)
| | - Arianna Casciati
- Division of Health Protection Technologies, Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), 00123 Rome, Italy; (A.C.); (C.M.); (M.M.)
| | - Montserrat Belles
- Physiology Unit, School of Medicine, Rovira I Virgili University (URV), 43007 Reus, Spain; (M.B.); (N.S.); (M.V.L.-V.)
| | - Noemi Serra
- Physiology Unit, School of Medicine, Rovira I Virgili University (URV), 43007 Reus, Spain; (M.B.); (N.S.); (M.V.L.-V.)
| | - Maria Victoria Linares-Vidal
- Physiology Unit, School of Medicine, Rovira I Virgili University (URV), 43007 Reus, Spain; (M.B.); (N.S.); (M.V.L.-V.)
| | - Carmela Marino
- Division of Health Protection Technologies, Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), 00123 Rome, Italy; (A.C.); (C.M.); (M.M.)
| | - Mariateresa Mancuso
- Division of Health Protection Technologies, Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), 00123 Rome, Italy; (A.C.); (C.M.); (M.M.)
| | - Simonetta Pazzaglia
- Division of Health Protection Technologies, Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), 00123 Rome, Italy; (A.C.); (C.M.); (M.M.)
- Correspondence: (F.A.); (S.P.)
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6
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Blocking the GITR-GITRL pathway to overcome resistance to therapy in sarcomatoid malignant pleural mesothelioma. Commun Biol 2021; 4:914. [PMID: 34312483 PMCID: PMC8313521 DOI: 10.1038/s42003-021-02430-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 07/07/2021] [Indexed: 01/06/2023] Open
Abstract
Malignant pleural mesothelioma (MPM) is an aggressive neoplasm originating from the pleura. Non-epithelioid (biphasic and sarcomatoid) MPM are particularly resistant to therapy. We investigated the role of the GITR-GITRL pathway in mediating the resistance to therapy. We found that GITR and GITRL expressions were higher in the sarcomatoid cell line (CRL5946) than in non-sarcomatoid cell lines (CRL5915 and CRL5820), and that cisplatin and Cs-137 irradiation increased GITR and GITRL expressions on tumor cells. Transcriptome analysis demonstrated that the GITR-GITRL pathway was promoting tumor growth and inhibiting cell apoptosis. Furthermore, GITR+ and GITRL+ cells demonstrated increased spheroid formation in vitro and in vivo. Using patient derived xenografts (PDXs), we demonstrated that anti-GITR neutralizing antibodies attenuated tumor growth in sarcomatoid PDX mice. Tumor immunostaining demonstrated higher levels of GITR and GITRL expressions in non-epithelioid compared to epithelioid tumors. Among 73 patients uniformly treated with accelerated radiation therapy followed by surgery, the intensity of GITR expression after radiation negatively correlated with survival in non-epithelioid MPM patients. In conclusion, the GITR-GITRL pathway is an important mechanism of autocrine proliferation in sarcomatoid mesothelioma, associated with tumor stemness and resistance to therapy. Blocking the GITR-GITRL pathway could be a new therapeutic target for non-epithelioid mesothelioma. Chan et al find that the GITR-GITRL pathway is an important mechanism of autocrine proliferation in sarcomatoid mesothelioma that could explain their resistance to therapy. Blocking the GITR-GITRL pathway could therefore be a new therapeutic target for non-epithelioid mesothelioma.
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7
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Nischarin downregulation attenuates cell injury induced by oxidative stress via Wnt signaling. Neuroreport 2020; 31:1199-1207. [PMID: 33075003 DOI: 10.1097/wnr.0000000000001536] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Nischarin (NISCH) is a key protein functioning as a molecular scaffold and thereby hosting interactions with several protein partners. Here, we aimed to investigate whether NISCH downregulation could protect rat pheochromocytoma (PC12) cells against oxidative stress-induced injury using a model of cell injury induced by hydrogen peroxide (H2O2). Cell viability was evaluated using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. Cell apoptosis rate was evaluated using flow cytometry. The expressions of apoptosis-related proteins Bax, Bcl-2, caspase-3 and NISCH were examined via Western blot analysis and immunofluorescence staining analyses. The expressions of NISCH, glycogen synthase kinase-3β (GSK-3β) and T-cell factor-1 (TCF-1) were examined using Western blot analysis. The results showed that incubation of H2O2 for 48 h significantly decreased the cell viability, increased the cell apoptosis rate and the NISCH expression in PC12 cells, whereas NISCH downregulation blocked the effects of H2O2 on cells. In addition, the expression of Bcl-2 was significantly reduced, and the expression of Bax and caspase-3 were significantly increased by H2O2 treatment. However, these effects were partially inhibited by the downregulation of NISCH. Furthermore, H2O2 significantly weakened the transduction of Wnt signaling, including the increases of GSK-3β and TCF-1 expressions and the decrease of β-catenin expression, while NISCH downregulation attenuated the effect of H2O2 on Wnt signaling. Moreover, inhibition of the Wnt pathway further decreased the cell viability and promoted the cell apoptosis induced by H2O2 in PC12 cells. Our results suggest that NISCH downregulation may protect cells against oxidative stress-induced injury through regulating the transduction of Wnt signaling.
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8
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Zhao G, Wang C, Wang Y, Wang L, Xu B, Guo X. Role of Apis cerana cerana N-terminal asparagine amidohydrolase (AccNtan1) in oxidative stress. J Biochem 2020; 168:337-348. [DOI: 10.1093/jb/mvaa071] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Accepted: 02/26/2020] [Indexed: 12/12/2022] Open
Abstract
AbstractN-Terminal asparagine amidohydrolase is a component of the ubiquitin-dependent N-end rule pathway of protein degradation that has been implicated in a variety of physiological functions, including the sensing of heme, oxygen, nitric oxide, selective elimination of misfolded proteins and the repair of DNA. We identified the Apis cerana cerana N-terminal asparagine amidohydrolase (AccNtan1) gene from A. cerana cerana and investigated its role in oxidation resistance. Multiple sequence alignments and phylogenetic analysis revealed that N-terminal asparagine amidohydrolase is highly conserved in insect species. Quantitative real-time polymerase chain reaction analysis indicated that the expression levels of AccNtan1 were significantly lower in the wing, honey sac and abdomen than in other tissues and were significantly higher in early stages of development, including the larva, prepupa and pink-eyed pupa stages, than in later stages. We further observed that AccNtan1 expression was induced by several environmental stressors, including aberrant temperature, H2O2, UV, heavy metals and pesticides. Moreover, a bacteriostatic assay suggested that overexpression of AccNtan1 enhances the resistance of bacteria to oxidative stress. In addition, knockdown of AccNtan1 using RNA interference significantly affected the expression levels of most antioxidant genes and the activity levels of several antioxidant enzymes. Thus, we hypothesize that AccNtan1 plays important roles in environmental stress responses and antioxidative processes.
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Affiliation(s)
- Guangdong Zhao
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Daizong Road No.61, Taian, Shandong 271018, PR China
| | - Chen Wang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Daizong Road No.61, Taian, Shandong 271018, PR China
| | - Ying Wang
- College of Animal Science and Technology, Shandong Agricultural University, Daizong Road No.61, Taian, Shandong 271018, PR China
| | - Lijun Wang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Daizong Road No.61, Taian, Shandong 271018, PR China
| | - Baohua Xu
- College of Animal Science and Technology, Shandong Agricultural University, Daizong Road No.61, Taian, Shandong 271018, PR China
| | - Xingqi Guo
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Daizong Road No.61, Taian, Shandong 271018, PR China
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9
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Gumà A, Díaz-Sáez F, Camps M, Zorzano A. Neuregulin, an Effector on Mitochondria Metabolism That Preserves Insulin Sensitivity. Front Physiol 2020; 11:696. [PMID: 32655416 PMCID: PMC7324780 DOI: 10.3389/fphys.2020.00696] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 05/28/2020] [Indexed: 01/06/2023] Open
Abstract
Various external factors modulate the metabolic efficiency of mitochondria. This review focuses on the impact of the growth factor neuregulin and its ErbB receptors on mitochondria and their relationship with several physiopathological alterations. Neuregulin is involved in the differentiation of heart, skeletal muscle, and the neuronal system, among others; and its deficiency is deleterious for the health. Information gathered over the last two decades suggests that neuregulin plays a key role in regulating the mitochondrial oxidative machinery, which sustains cell survival and insulin sensitivity.
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Affiliation(s)
- Anna Gumà
- Department of Biochemistry and Molecular Biomedicine, Faculty of Biology, University of Barcelona, Barcelona, Spain.,CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain.,Institute of Biomedicine of the University of Barcelona (IBUB), University of Barcelona, Barcelona, Spain
| | - Francisco Díaz-Sáez
- Department of Biochemistry and Molecular Biomedicine, Faculty of Biology, University of Barcelona, Barcelona, Spain.,CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain.,Institute of Biomedicine of the University of Barcelona (IBUB), University of Barcelona, Barcelona, Spain
| | - Marta Camps
- Department of Biochemistry and Molecular Biomedicine, Faculty of Biology, University of Barcelona, Barcelona, Spain.,CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain.,Institute of Biomedicine of the University of Barcelona (IBUB), University of Barcelona, Barcelona, Spain
| | - Antonio Zorzano
- Department of Biochemistry and Molecular Biomedicine, Faculty of Biology, University of Barcelona, Barcelona, Spain.,CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain.,Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Barcelona, Spain
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10
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Tsialtas I, Gorgogietas VA, Michalopoulou M, Komninou A, Liakou E, Georgantopoulos A, Kalousi FD, Karra AG, Protopapa E, Psarra AMG. Neurotoxic effects of aluminum are associated with its interference with estrogen receptors signaling. Neurotoxicology 2020; 77:114-126. [PMID: 31945389 DOI: 10.1016/j.neuro.2020.01.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 01/10/2020] [Accepted: 01/12/2020] [Indexed: 12/20/2022]
Abstract
Aluminum compounds have been observed in various brain regions, and their accumulation has been associated with many neurodegenerative disorders. Neurotoxic effects of aluminum are attributed to reactive oxygen species generation, induction of apoptosis and inflammatory reactions activation. Metalloestrogen activity of aluminum has also been linked to breast cancer progression and metastasis. In this study, taking into account the anti-apoptotic and anti-oxidant activities of estrogens in neuronal cells, which are mediated by estrogen receptors, the possible estrogenic activity of aluminum in SH-SY5Y neuroblastoma cells was studied. Our results showed that aluminum in the form of aluminum chlorohydrate (ACH) exhibited no effect on estrogen receptors transcriptional activation, and differential effect on estrogen receptor alpha (ERα) and estrogen receptor beta (ERβ) protein levels. ACH caused reduction in ERβ protein levels, and increase in its mitochondrial localization. ACH-induced reduction in ERβ protein level may be linked, at least in part, to the ACH-induced increase in ERα protein level. This statement is based on our observations showing aluminum-induced reduction in the E2-induced increase in ERα S118 phosphorylation, in MCF-7 and SH-SH5Y cells. Phosphorylation at S118 residue is known to be associated with inhibition of the ubiquitin-induced proteolytic degradation of ERα, leading to its accumulation. Since it is known that ERα negatively regulate ERβ expression, increase in ERα, may contribute to reduction in ERβ levels and subsequent weakening of its anti-apoptotic and anti-oxidant activity, justified by the observed reduction in procaspase 9, mitochondrial cytochrome c, Bcl-2, Bcl-xL and mitochondrial thioredoxin protein level, as well as by the increase in proapoptotic BAX level, in ACH treated SH-SY5Y cells. In addition, increase in mitochondrial ERβ localization may also trigger mitochondrial metabolism, suppress biosynthetic process of gluconeogenesis, as indicated by the observed reduction in the phosphoenolpyruvate carboxykinase protein level, and eventually lead to increase in reactive oxygen species (ROS) generation, known to be implicated in aluminum induced neurodegeneration. This statement was verified by the observed ACH-induced increase in ERβ mitochondrial localization, induction of the mitochondrial membrane depolarization and increase in ROS production, in neuronal-like differentiated SH-SY5Y cells.
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Affiliation(s)
- Ioannis Tsialtas
- Department of Biochemistry and Biotechnology, University of Thessaly, Larissa, Greece
| | - Vyron A Gorgogietas
- Department of Biochemistry and Biotechnology, University of Thessaly, Larissa, Greece
| | - Maria Michalopoulou
- Department of Biochemistry and Biotechnology, University of Thessaly, Larissa, Greece
| | - Aggeliki Komninou
- Department of Biochemistry and Biotechnology, University of Thessaly, Larissa, Greece
| | - Eleni Liakou
- Department of Biochemistry and Biotechnology, University of Thessaly, Larissa, Greece
| | | | - Foteini D Kalousi
- Department of Biochemistry and Biotechnology, University of Thessaly, Larissa, Greece
| | - Aikaterini G Karra
- Department of Biochemistry and Biotechnology, University of Thessaly, Larissa, Greece
| | - Evagelia Protopapa
- Department of Aesthetics and Cosmetology, Faculty of Health & Caring Professions, University of West Attica, Egaleo, Greece
| | - Anna-Maria G Psarra
- Department of Biochemistry and Biotechnology, University of Thessaly, Larissa, Greece.
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11
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Yoo JY, Kim HB, Yoo SY, Yoo HI, Song DY, Baik TK, Lee JH, Woo RS. Neuregulin 1/ErbB4 signaling attenuates neuronal cell damage under oxygen-glucose deprivation in primary hippocampal neurons. Anat Cell Biol 2019; 52:462-468. [PMID: 31949986 PMCID: PMC6952697 DOI: 10.5115/acb.19.210] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 10/29/2019] [Accepted: 11/01/2019] [Indexed: 12/25/2022] Open
Abstract
The hippocampus is one of the most important brain areas of cognition. This region is particularly sensitive to hypoxia and ischemia. Neuregulin-1 (NRG1) has been shown to be able to protect against focal cerebral ischemia. The aim of the present study was to investigate the neuroprotective effect of NRG1 in primary hippocampal neurons and its underlying mechanism. Our data showed oxygen-glucose deprivation (OGD)-induced cytotoxicity and overexpression of ErbB4 in primary hippocampal neurons. Moreover, pretreatment with NRG1 could inhibit OGD-induced overexpression of ErbB4. In addition, NRG1 significantly attenuated neuronal death induced by OGD. The neuroprotective effect of NRG1 was blocked in ischemic neurons after pretreatment with AG1478, an inhibitor of ErbB4, but not after pretreatment with AG879, an inhibitor of ErbB2. These results indicate an important role of ErbB4 in NRG1-mediated neuroprotection, suggesting that endogenous ErbB4 might serve as a valuable therapeutic target for treating global cerebral ischemia.
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Affiliation(s)
- Ji-Young Yoo
- Department of Anatomy and Neuroscience, Eulji University College of Medicine, Daejeon, Korea
| | - Han-Byeol Kim
- Department of Anatomy and Neuroscience, Eulji University College of Medicine, Daejeon, Korea
| | - Seung-Yeon Yoo
- Department of Anatomy and Neuroscience, Eulji University College of Medicine, Daejeon, Korea
| | - Hong-Il Yoo
- Department of Anatomy and Neuroscience, Eulji University College of Medicine, Daejeon, Korea
| | - Dae-Yong Song
- Department of Anatomy and Neuroscience, Eulji University College of Medicine, Daejeon, Korea
| | - Tai-Kyoung Baik
- Department of Anatomy and Neuroscience, Eulji University College of Medicine, Daejeon, Korea
| | - Jun-Ho Lee
- Department of Emergency Medical Technology, Daejeon University, Daejeon, Korea
| | - Ran-Sook Woo
- Department of Anatomy and Neuroscience, Eulji University College of Medicine, Daejeon, Korea
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12
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Zhang X, Li G, Yang X, Wang L, Wang Y, Guo X, Li H, Xu B. Identification of a DnaJC3 gene in Apis cerana cerana and its involvement in various stress responses. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2019; 160:171-180. [PMID: 31519252 DOI: 10.1016/j.pestbp.2019.08.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Revised: 08/23/2019] [Accepted: 08/29/2019] [Indexed: 06/10/2023]
Abstract
As molecular chaperones, DnaJs play critical roles in maintaining cytoplasmic structure and resisting various stresses. However, the functions of DnaJs in insects are poorly understood. In this study, we identified a DnaJC3 from Apis cerana cerana (AccDnaJC3) and investigated its roles in adverse conditions. Real-time quantitative PCR analysis showed that AccDnaJC3 was highly expressed in muscle and epidermis. In addition, AccDnaJC3 was induced by a variety of stresses, such as 4 °C, 24 °C, 44 °C, H2O2, HgCl2, VC, UV, cyhalothrin, abamectin and emamectin benzoate treatments, whereas it was inhibited by CdCl2 and paraquat treatments. Disc diffusion experiments indicated that overexpression of recombinant AccDnaJC3 enhanced Escherichia coli tolerance to some stress conditions. In contrast to the control group, when AccDnaJC3 was knocked down with RNAi technology, several other antioxidant genes were downregulated, suggesting that AccDnaJC3 may play important roles in stress response. Furthermore, we found that the enzyme activities of superoxide dismutase, peroxidase and catalase were lower in AccDnaJC3-knockdown bees than in control bees. Taken together, these results suggest that AccDnaJC3 may be involved in various stress responses in Apis cerana cerana.
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Affiliation(s)
- Xuemei Zhang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong 271018, PR China
| | - Guilin Li
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong 271018, PR China
| | - Xinxin Yang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong 271018, PR China
| | - Lijun Wang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong 271018, PR China
| | - Ying Wang
- College of Animal Science and Technology, Shandong Agricultural University, Taian, Shandong 271018, PR China
| | - Xingqi Guo
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong 271018, PR China
| | - Han Li
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong 271018, PR China.
| | - Baohua Xu
- College of Animal Science and Technology, Shandong Agricultural University, Taian, Shandong 271018, PR China.
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13
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Wang X, Chao Y, Wang Y, Xu B, Wang C, Li H. Identification of an adaptor protein‐2 mu gene (
AccAP2m
) in
Apis cerana cerana
and its role in oxidative stress responses. J Cell Biochem 2019; 120:16600-16613. [DOI: 10.1002/jcb.28919] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 04/07/2019] [Accepted: 04/11/2019] [Indexed: 12/13/2022]
Affiliation(s)
- Xinxin Wang
- State Key Laboratory of Crop Biology College of Life Sciences, Shandong Agricultural University Taian Shandong PR China
| | - Yuzhen Chao
- State Key Laboratory of Crop Biology College of Life Sciences, Shandong Agricultural University Taian Shandong PR China
| | - Ying Wang
- College of Animal Science and Technology Shandong Agricultural University Taian Shandong PR China
| | - Baohua Xu
- College of Animal Science and Technology Shandong Agricultural University Taian Shandong PR China
| | - Chen Wang
- State Key Laboratory of Crop Biology College of Life Sciences, Shandong Agricultural University Taian Shandong PR China
| | - Han Li
- State Key Laboratory of Crop Biology College of Life Sciences, Shandong Agricultural University Taian Shandong PR China
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14
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Gao L, Wang L, Yang X, Wang Y, Liu Z, Xu B, Guo X. Role of a serine protease gene (AccSp1) from Apis cerana cerana in abiotic stress responses and innate immunity. Cell Stress Chaperones 2019; 24:29-43. [PMID: 30413995 PMCID: PMC6363618 DOI: 10.1007/s12192-018-0934-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 08/19/2018] [Accepted: 08/21/2018] [Indexed: 12/31/2022] Open
Abstract
Clip-domain serine proteases (Clip-SPs) mediate innate immunity and embryonic development in insects. However, the function of Clip-SPs in Apis cerana cerana is little known. Here, a Clip-SP gene, AccSp1, was identified. AccSp1 was mainly detected in third and sixth day instar larvae, dark-eyed pupae, and adults (1and 30 days post-emergence). In addition, AccSp1 was expressed at its highest level in the venom gland and epidermis than tentacle, abdomen, muscle, honey sac, head, leg, chest, hemolymph, rectum, and midgut. AccSp1 was induced by 4, 24, and 44 °C; H2O2; CdCl2; HgCl2; and pesticides (paraquat, pyridaben, and methomyl) and was inhibited by UV light and cyhalothrin treatments. When adults that had been pretreated with dsRNA 6 h prior (knocking AccSp1 down) were challenged with Bacillus bombysepticus for 18 h, the survival rate of bees greatly decreased, the activity of PO (phenoloxidase) was reduced, revealing that AccSp1 may play a critical role in assisting bees to survive the microbial infection and participate in regulating PO activity. The antioxidant enzymatic activities of catalase, peroxidase, and superoxide dismutase; the contents of hydrogen peroxide and malondialdehyde; and the ratio of NADP+/NADPH were all lower in samples containing dsRNA-AccSp1 interference than in control groups, but the content of carbonyl was not significantly different. These findings suggest the knockdown of AccSp1 may influence melanization so that the antioxidant enzyme activities and the harmful metabolites decreased. These results collectively suggest that AccSp1 plays critical roles in abiotic stresses responses and resistance to pathogens.
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Affiliation(s)
- Lijun Gao
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, 271018, Shandong, People's Republic of China
- College of Life Sciences, Taishan Medical University, Taian, 271016, Shandong, People's Republic of China
| | - Lijun Wang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, 271018, Shandong, People's Republic of China
| | - Xinxin Yang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, 271018, Shandong, People's Republic of China
| | - Ying Wang
- College of Animal Science and Technology, Shandong Agricultural University, Taian, 271018, Shandong, People's Republic of China
| | - Zhenguo Liu
- College of Animal Science and Technology, Shandong Agricultural University, Taian, 271018, Shandong, People's Republic of China
| | - Baohua Xu
- College of Animal Science and Technology, Shandong Agricultural University, Taian, 271018, Shandong, People's Republic of China.
| | - Xingqi Guo
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, 271018, Shandong, People's Republic of China.
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15
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Xue WK, Zhao WJ, Meng XH, Shen HF, Huang PZ. Spinal cord injury induced Neuregulin 1 signaling changes in mouse prefrontal cortex and hippocampus. Brain Res Bull 2019; 144:180-186. [PMID: 30529367 DOI: 10.1016/j.brainresbull.2018.12.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 11/27/2018] [Accepted: 12/05/2018] [Indexed: 02/08/2023]
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16
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Lee JH, Yoo JY, Kim HB, Yoo HI, Song DY, Min SS, Baik TK, Woo RS. Neuregulin1 Attenuates H 2O 2-Induced Reductions in EAAC1 Protein Levels and Reduces H 2O 2-Induced Oxidative Stress. Neurotox Res 2018; 35:401-409. [PMID: 30328584 PMCID: PMC6331506 DOI: 10.1007/s12640-018-9965-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 09/13/2018] [Accepted: 09/21/2018] [Indexed: 11/30/2022]
Abstract
Neuregulin 1 (NRG1) exhibits potent neuroprotective properties. The aim of the present study was to investigate the antioxidative effects and underlying mechanisms of NRG1 against H2O2-induced oxidative stress in primary rat cortical neurons. The expression level of the excitatory amino acid carrier 1 (EAAC1) protein was measured by Western blotting and immunocytochemistry. The levels of lactate dehydrogenase (LDH) release, reactive oxygen species (ROS) generation, superoxide dismutase (SOD) activity, GPx activity, and mitochondrial membrane potential (∆ψm) were determined to examine cell death and the antioxidant properties of NRG1 in primary rat cortical neurons. H2O2 reduced the expression of EAAC1 in a dose-dependent manner. We found that pretreatment with NRG1 attenuated the H2O2-induced reduction in EAAC1 expression. Moreover, NRG1 reduced the cell death and oxidative stress induced by H2O2. In addition, NRG1 attenuated H2O2-induced reductions in antioxidant enzyme activity and ∆ψm. Our data indicate a role for NRG1 in protecting against oxidative stress via the regulation of EAAC1. These observations may provide novel insights into the mechanisms of NRG1 activity during oxidative stress and may reveal new therapeutic targets for regulating the oxidative stress associated with various neurological diseases.
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Affiliation(s)
- Jun-Ho Lee
- Department of Emergency Medical Technology, Daejeon University, Daejeon, 34520, Republic of Korea
| | - Ji-Young Yoo
- Department of Anatomy and Neuroscience, College of Medicine, Eulji University, 143-5, Yongdu-Dong, Jung-Gu, Daejeon, 34824, Republic of Korea
| | - Han-Byeol Kim
- Department of Anatomy and Neuroscience, College of Medicine, Eulji University, 143-5, Yongdu-Dong, Jung-Gu, Daejeon, 34824, Republic of Korea
| | - Hong-Il Yoo
- Department of Anatomy and Neuroscience, College of Medicine, Eulji University, 143-5, Yongdu-Dong, Jung-Gu, Daejeon, 34824, Republic of Korea
| | - Dae-Yong Song
- Department of Anatomy and Neuroscience, College of Medicine, Eulji University, 143-5, Yongdu-Dong, Jung-Gu, Daejeon, 34824, Republic of Korea
| | - Sun Seek Min
- Department of Physiology and Biophysics, College of Medicine, Eulji University, Daejeon, 34824, Republic of Korea
| | - Tai-Kyoung Baik
- Department of Anatomy and Neuroscience, College of Medicine, Eulji University, 143-5, Yongdu-Dong, Jung-Gu, Daejeon, 34824, Republic of Korea.
| | - Ran-Sook Woo
- Department of Anatomy and Neuroscience, College of Medicine, Eulji University, 143-5, Yongdu-Dong, Jung-Gu, Daejeon, 34824, Republic of Korea.
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17
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Stewart EM, Wu Z, Huang XF, Kapsa RMI, Wallace GG. Use of conducting polymers to facilitate neurite branching in schizophrenia-related neuronal development. Biomater Sci 2018; 4:1244-51. [PMID: 27376413 DOI: 10.1039/c6bm00212a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Schizophrenia (SCZ) is a debilitating mental disorder which results in high healthcare and loss of productivity costs to society. This disease remains poorly understood, however there is increasing evidence suggesting a role for oxidative damage in the disease etiology. We aimed to examine the effect of the conducting polymer polypyrrole on the growth and morphology of both wildtype and neuregulin-1 knock out (NRG-1 +/-) explant cells. Polypyrrole is an organic conducting polymer known to be cytocompatible and capable of acting as a platform for effective stimulation of neurons. Here we demonstrate for the first time the ability of this material to mediate processes occurring in disease affected neurons: schizophrenic model cortical neurons. Prefrontal cortical cells were grown on conducting polymer scaffolds of specific composition and showed significantly increased neurite branching and outgrowth length on the polymers compared to controls. Concurrently, a more significant enhancement was seen in both parameters in the NRG-1 +/- model cells. This finding implies that conducting polymers such as polypyrrole may be utilised to overcome neuro-functional deficits associated with neurological disease in humans.
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Affiliation(s)
- Elise M Stewart
- ARC Centre of Excellence for Electromaterials Science, University of Wollongong, NSW, Australia.
| | - Zhixiang Wu
- Illawarra Health and Medical Research Institute, University of Wollongong, NSW, Australia
| | - Xu Feng Huang
- Illawarra Health and Medical Research Institute, University of Wollongong, NSW, Australia
| | - Robert M I Kapsa
- ARC Centre of Excellence for Electromaterials Science, University of Wollongong, NSW, Australia.
| | - Gordon G Wallace
- ARC Centre of Excellence for Electromaterials Science, University of Wollongong, NSW, Australia.
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18
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Liao D, Guo Y, Xiang D, Dang R, Xu P, Cai H, Cao L, Jiang P. Dysregulation of Neuregulin-1/ErbB signaling in the hippocampus of rats after administration of doxorubicin. DRUG DESIGN DEVELOPMENT AND THERAPY 2018; 12:231-239. [PMID: 29430172 PMCID: PMC5796460 DOI: 10.2147/dddt.s151511] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Objective Long-term use of doxorubicin (Dox) can cause neurobiological side effects associated with depression, but the underlying mechanisms remain equivocal. While recent evidence has indicated that Neuregulin-1 (NRG1) and its ErbB receptors play an essential role in neural function, much is still unknown concerning the biological link between the NRG1/ErbB pathway and the Dox-induced neurotoxicity. Therefore, we examined the protein expression of NRG1 and ErbB receptors in the hippocampus of rats following Dox treatment. Materials and methods The drug was administered every 2 days at a dose of 2.5 mg/kg, and the animals in different groups were treated with intraperitoneal injection for three or seven times, respectively. Results Our data showed that the rats treated with Dox for seven times (DoxL group) exhibited depression-like behaviors, whereas the short-term treatment (DoxS group) had no effect on the behavioral changes. Dox treatment also induced the neural apoptosis with more severe neurotoxicity. Intriguingly, the expression of NRG1 and the ratio of pErbB4/ErbB4 and pErbB2/ErbB2 were significantly decreased in the DoxL group, but enhanced activation of ErbB receptors was observed in the DoxS group. In parallel, administration of Dox for seven times suppressed the downstream Akt and ERK phosphorylation, while the Akt phosphorylation was enhanced with the administration of Dox for three times. Conclusion Our data first showed the Dox-induced alterations of the NRG1/ErbB system in the hippocampus, indicating the potential involvement of the NRG1/ErbB pathway in the Dox-induced nervous system dysfunction.
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Affiliation(s)
- Dehua Liao
- Department of Pharmacy, Hunan Cancer Hospital.,Department of Pharmacy, Institute of Clinical Pharmacy & Pharmacology, Second Xiangya Hospital, Central South University, Changsha
| | - Yujin Guo
- Department of Pharmacy, Jining First People's Hospital, Jining Medical University, Jining, People's Republic of China
| | - Daxiong Xiang
- Department of Pharmacy, Institute of Clinical Pharmacy & Pharmacology, Second Xiangya Hospital, Central South University, Changsha
| | - Ruili Dang
- Department of Pharmacy, Jining First People's Hospital, Jining Medical University, Jining, People's Republic of China
| | - Pengfei Xu
- Department of Pharmacy, Jining First People's Hospital, Jining Medical University, Jining, People's Republic of China
| | - Hualin Cai
- Department of Pharmacy, Institute of Clinical Pharmacy & Pharmacology, Second Xiangya Hospital, Central South University, Changsha
| | - Lizhi Cao
- Department of Pharmacy, Hunan Cancer Hospital
| | - Pei Jiang
- Department of Pharmacy, Jining First People's Hospital, Jining Medical University, Jining, People's Republic of China
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19
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Ma M, Jia H, Cui X, Zhai N, Wang H, Guo X, Xu B. Isolation of carboxylesterase (esterase FE4) from Apis cerana cerana and its role in oxidative resistance during adverse environmental stress. Biochimie 2018; 144:85-97. [DOI: 10.1016/j.biochi.2017.10.022] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Accepted: 10/25/2017] [Indexed: 01/13/2023]
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20
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Gao L, Wang H, Liu Z, Liu S, Zhao G, Xu B, Guo X. The initial analysis of a serine proteinase gene (AccSp10) from Apis cerana cerana: possible involvement in pupal development, innate immunity and abiotic stress responses. Cell Stress Chaperones 2017; 22:867-877. [PMID: 28695333 PMCID: PMC5655375 DOI: 10.1007/s12192-017-0818-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 05/31/2017] [Accepted: 06/05/2017] [Indexed: 12/15/2022] Open
Abstract
Serine proteinases play important roles in innate immunity and insect development. We isolated a serine proteinase gene, designated AccSp10, from the Chinese honeybees (Apis cerana cerana). RT-qPCR and a Western blot analysis at different pupal development stages indicated that AccSp10 might be involved in melanin formation in pupae and promote pupal development. In adult workers, the expression of AccSp10 was upregulated by treatments mimicking harmful environments such as the presence of Bacillus bombysepticus, different temperatures (4, 24 and 42 °C), HgCl2, H2O2 and paraquat; the exception was treatment with VC (vitamin C), which did not upregulate AccSp10 expression. Western blot confirmed the results. A disc diffusion assay indicated that recombinant AccSp10 accelerated E. coli cell death during stimulation with harmful substances (HgCl2, paraquat and cumene hydroperoxide). These findings suggest that AccSp10 may be involved in the pupal development of Chinese honeybees and protection against microorganisms and abiotic harms.
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Affiliation(s)
- Lijun Gao
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong, 271018, People's Republic of China
- College of Life Sciences, Taishan Medical University, Taian, Shandong, 271016, People's Republic of China
| | - Hongfang Wang
- College of Animal Science and Technology, Shandong Agricultural University, Taian, Shandong, 271018, People's Republic of China
| | - Zhenguo Liu
- College of Animal Science and Technology, Shandong Agricultural University, Taian, Shandong, 271018, People's Republic of China
| | - Shuchang Liu
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong, 271018, People's Republic of China
| | - Guangdong Zhao
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong, 271018, People's Republic of China
| | - Baohua Xu
- College of Animal Science and Technology, Shandong Agricultural University, Taian, Shandong, 271018, People's Republic of China.
| | - Xingqi Guo
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong, 271018, People's Republic of China.
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21
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Shi J, Chen X, Li H, Wu Y, Wang S, Shi W, Chen J, Ni Y. Neuron-autonomous transcriptome changes upon ischemia/reperfusion injury. Sci Rep 2017; 7:5800. [PMID: 28724924 PMCID: PMC5517505 DOI: 10.1038/s41598-017-05342-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Accepted: 05/30/2017] [Indexed: 01/22/2023] Open
Abstract
Ischemic stroke and the following reperfusion, an acute therapeutic intervention, can cause irreversible brain damages. However, the underlying pathological mechanisms are still under investigation. To obtain a comprehensive, real-time view of the cell-autonomous mechanisms involved in ischemic stroke and reperfusion, we applied the next-generation sequencing (NGS) technology to characterize the temporal changes in gene expression profiles using primarily cultured hippocampal neurons under an oxygen-glucose deprivation/reperfusion (OGD/R) condition. We first identified the differentially expressed genes (DEGs) between normal cultured neurons, neurons with OGD, and neurons with OGD followed by reperfusion for 6 h, 12 h, and 18 h, respectively. We then performed bioinformatics analyses, including gene ontological (GO) and pathway analysis and co-expression network analysis to screen for novel key pathways and genes involved in the pathology of OGD/R. After we confirmed the changes of selected key genes in hippocampal cultures with OGD/R, we further validated their expression changes in an in vivo ischemic stroke model (MCAO). Finally, we demonstrated that prevention of the up-regulation of a key gene (Itga5) associated with OGD/R promoted hippocampal neuronal survival. Our research thereby provided novel insights into the molecular mechanisms in ischemic stroke pathophysiology and potential targets for therapeutic intervention after ischemic stroke.
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Affiliation(s)
- Jinlong Shi
- Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair and Department of Neurosurgery, Affiliated Hospital of Nantong University, 20 Xisi Road, Nantong, 226001, Jiangsu, China
| | - Xia Chen
- Basic Medical Research Center, Medical School, Nantong University, 19 Qixiu Road, Nantong, 226001, Jiangsu, China.
| | - Haiying Li
- Department of Pediatrics, Affiliated Hospital of Nantong University, 20 Xisi Road, Nantong, 226001, Jiangsu, China
| | - Youjia Wu
- Department of Pediatrics, Affiliated Hospital of Nantong University, 20 Xisi Road, Nantong, 226001, Jiangsu, China
| | - Shouyan Wang
- Basic Medical Research Center, Medical School, Nantong University, 19 Qixiu Road, Nantong, 226001, Jiangsu, China
| | - Wei Shi
- Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair and Department of Neurosurgery, Affiliated Hospital of Nantong University, 20 Xisi Road, Nantong, 226001, Jiangsu, China
| | - Jian Chen
- Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair and Department of Neurosurgery, Affiliated Hospital of Nantong University, 20 Xisi Road, Nantong, 226001, Jiangsu, China
| | - Yaohui Ni
- Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair and Department of Neurology, Affiliated Hospital of Nantong University, 20 Xisi Road, Nantong, 226001, Jiangsu, China.
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22
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Steullet P, Cabungcal JH, Coyle J, Didriksen M, Gill K, Grace AA, Hensch TK, LaMantia AS, Lindemann L, Maynard TM, Meyer U, Morishita H, O'Donnell P, Puhl M, Cuenod M, Do KQ. Oxidative stress-driven parvalbumin interneuron impairment as a common mechanism in models of schizophrenia. Mol Psychiatry 2017; 22:936-943. [PMID: 28322275 PMCID: PMC5491690 DOI: 10.1038/mp.2017.47] [Citation(s) in RCA: 234] [Impact Index Per Article: 33.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Revised: 12/21/2016] [Accepted: 01/17/2017] [Indexed: 02/08/2023]
Abstract
Parvalbumin inhibitory interneurons (PVIs) are crucial for maintaining proper excitatory/inhibitory balance and high-frequency neuronal synchronization. Their activity supports critical developmental trajectories, sensory and cognitive processing, and social behavior. Despite heterogeneity in the etiology across schizophrenia and autism spectrum disorder, PVI circuits are altered in these psychiatric disorders. Identifying mechanism(s) underlying PVI deficits is essential to establish treatments targeting in particular cognition. On the basis of published and new data, we propose oxidative stress as a common pathological mechanism leading to PVI impairment in schizophrenia and some forms of autism. A series of animal models carrying genetic and/or environmental risks relevant to diverse etiological aspects of these disorders show PVI deficits to be all accompanied by oxidative stress in the anterior cingulate cortex. Specifically, oxidative stress is negatively correlated with the integrity of PVIs and the extracellular perineuronal net enwrapping these interneurons. Oxidative stress may result from dysregulation of systems typically affected in schizophrenia, including glutamatergic, dopaminergic, immune and antioxidant signaling. As convergent end point, redox dysregulation has successfully been targeted to protect PVIs with antioxidants/redox regulators across several animal models. This opens up new perspectives for the use of antioxidant treatments to be applied to at-risk individuals, in close temporal proximity to environmental impacts known to induce oxidative stress.
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Affiliation(s)
- P Steullet
- Centre for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital, Prilly-Lausanne, Switzerland
| | - J-H Cabungcal
- Centre for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital, Prilly-Lausanne, Switzerland
| | - J Coyle
- Laboratory for Psychiatric and Molecular Neuroscience, Harvard Medical School, McLean Hospital, Belmont, MA, USA
| | - M Didriksen
- Synaptic transmission H. Lundbeck A/S, Valby, Denmark
| | - K Gill
- Departments of Neuroscience, Psychiatry and Psychology, University of Pittsburgh, Pittsburgh, PA, USA
| | - A A Grace
- Departments of Neuroscience, Psychiatry and Psychology, University of Pittsburgh, Pittsburgh, PA, USA
| | - T K Hensch
- Center for Brain Science, Department of Molecular Cellular Biology, Harvard University, Cambridge, MA USA
- FM Kirby Neurobiology Center, Department of Neurology, Boston Children’s Hospital, Harvard Medical School, Boston, MA, USA
| | - A-S LaMantia
- George Washington Institute for Neuroscience, The George Washington University, Washington, DC, USA
| | - L Lindemann
- F. Hoffmann-La Roche, Roche Pharmaceutical and Early Development, Neuroscience, Opthalmology & Rare Disease (NORD) DTA, Discovery Neuroscience, Roche Innovation Center Basel, Basel, Switzerland
| | - T M Maynard
- George Washington Institute for Neuroscience, The George Washington University, Washington, DC, USA
| | - U Meyer
- Institute of Pharmacology and Toxicology, University of Zurich-Vetsuisse, Zurich, Switzerland
| | - H Morishita
- Center for Brain Science, Department of Molecular Cellular Biology, Harvard University, Cambridge, MA USA
- FM Kirby Neurobiology Center, Department of Neurology, Boston Children’s Hospital, Harvard Medical School, Boston, MA, USA
- Department of Psychiatry, Neuroscience, and Ophthalmology, Friedman Brain Institute, Mindich Child Health and Development Institute, Icahn School of Medicine at Mount Sinai, NY, USA
| | - P O'Donnell
- Neuroscience and Pain Research Unit, BioTherapeutics Research and Development, Pfizer, Cambridge, MA, USA
| | - M Puhl
- Laboratory for Psychiatric and Molecular Neuroscience, Harvard Medical School, McLean Hospital, Belmont, MA, USA
| | - M Cuenod
- Centre for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital, Prilly-Lausanne, Switzerland
| | - K Q Do
- Centre for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital, Prilly-Lausanne, Switzerland
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23
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Steullet P, Cabungcal JH, Monin A, Dwir D, O'Donnell P, Cuenod M, Do KQ. Redox dysregulation, neuroinflammation, and NMDA receptor hypofunction: A "central hub" in schizophrenia pathophysiology? Schizophr Res 2016; 176:41-51. [PMID: 25000913 PMCID: PMC4282982 DOI: 10.1016/j.schres.2014.06.021] [Citation(s) in RCA: 171] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Revised: 06/06/2014] [Accepted: 06/08/2014] [Indexed: 12/18/2022]
Abstract
Accumulating evidence points to altered GABAergic parvalbumin-expressing interneurons and impaired myelin/axonal integrity in schizophrenia. Both findings could be due to abnormal neurodevelopmental trajectories, affecting local neuronal networks and long-range synchrony and leading to cognitive deficits. In this review, we present data from animal models demonstrating that redox dysregulation, neuroinflammation and/or NMDAR hypofunction (as observed in patients) impairs the normal development of both parvalbumin interneurons and oligodendrocytes. These observations suggest that a dysregulation of the redox, neuroimmune, and glutamatergic systems due to genetic and early-life environmental risk factors could contribute to the anomalies of parvalbumin interneurons and white matter in schizophrenia, ultimately impacting cognition, social competence, and affective behavior via abnormal function of micro- and macrocircuits. Moreover, we propose that the redox, neuroimmune, and glutamatergic systems form a "central hub" where an imbalance within any of these "hub" systems leads to similar anomalies of parvalbumin interneurons and oligodendrocytes due to the tight and reciprocal interactions that exist among these systems. A combination of vulnerabilities for a dysregulation within more than one of these systems may be particularly deleterious. For these reasons, molecules, such as N-acetylcysteine, that possess antioxidant and anti-inflammatory properties and can also regulate glutamatergic transmission are promising tools for prevention in ultra-high risk patients or for early intervention therapy during the first stages of the disease.
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Affiliation(s)
- P Steullet
- Center for Psychiatric Neuroscience, Department of Psychiatry, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Site de Cery, 1008 Prilly-Lausanne, Switzerland
| | - J H Cabungcal
- Center for Psychiatric Neuroscience, Department of Psychiatry, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Site de Cery, 1008 Prilly-Lausanne, Switzerland
| | - A Monin
- Center for Psychiatric Neuroscience, Department of Psychiatry, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Site de Cery, 1008 Prilly-Lausanne, Switzerland
| | - D Dwir
- Center for Psychiatric Neuroscience, Department of Psychiatry, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Site de Cery, 1008 Prilly-Lausanne, Switzerland
| | - P O'Donnell
- Neuroscience Research Unit, Pfizer, Inc., 700 Main Street, Cambridge, MA 02139, USA
| | - M Cuenod
- Center for Psychiatric Neuroscience, Department of Psychiatry, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Site de Cery, 1008 Prilly-Lausanne, Switzerland
| | - K Q Do
- Center for Psychiatric Neuroscience, Department of Psychiatry, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Site de Cery, 1008 Prilly-Lausanne, Switzerland.
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YANG ZHAI, JIANG QIONG, CHEN SHUANGXI, HU CHENGLIANG, SHEN HUIFAN, HUANG PEIZHI, XU JUNPING, MEI JINPING, ZHANG BENPING, ZHAO WEIJIANG. Differential changes in Neuregulin-1 signaling in major brain regions in a lipopolysaccharide-induced neuroinflammation mouse model. Mol Med Rep 2016; 14:790-6. [PMID: 27220549 PMCID: PMC4918623 DOI: 10.3892/mmr.2016.5325] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Accepted: 05/10/2016] [Indexed: 02/05/2023] Open
Abstract
Neuregulin 1 (Nrg1) is involved in multiple biological processes in the nervous system. The present study investigated changes in Nrg1 signaling in the major brain regions of mice subjected to lipopolysaccharide (LPS)-induced neuroinflammation. At 24 h post‑intraperitoneal injection of LPS, mouse brain tissues, including tissues from the cortex, striatum, hippocampus and hypothalamus, were collected. Reverse transcription‑polymerase chain reaction was used to determine the expression of Nrg1 and its receptors, Neu and ErbB4, at the mRNA level. Western blotting was performed to determine the levels of these proteins and the protein levels of phosphorylated extracellular signal-regulated kinases (Erk)1/2 and Akt1. Immunohistochemical staining was utilized to detect the levels of pNeu and pErbB4 in these regions. LPS successfully induced sites of neuroinflammation in these regions, in which changes in Nrg1, Neu and ErbB4 at the mRNA and protein levels were identified compared with controls. LPS induced a reduction in pNeu and pErbB4 in the striatum and hypothalamus, although marginally increased pErbB4 levels were found in the hippocampus. LPS increased the overall phosphorylation of Src but this effect was reduced in the hypothalamus. Moreover, increased phosphorylation of Akt1 was found in the striatum and hippocampus. These data suggest diverse roles for Nrg1 signaling in these regions during the process of neuroinflammation.
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Affiliation(s)
- ZHAI YANG
- Center for Neuroscience, Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
| | - QIONG JIANG
- Center for Neuroscience, Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
| | - SHUANG-XI CHEN
- Center for Neuroscience, Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
| | - CHENG-LIANG HU
- Center for Neuroscience, Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
| | - HUI-FAN SHEN
- Center for Neuroscience, Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
| | - PEI-ZHI HUANG
- Center for Neuroscience, Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
| | - JUN-PING XU
- Center for Neuroscience, Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
| | - JIN-PING MEI
- Graduate School, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, P.R. China
| | - BEN-PING ZHANG
- Department of Neurology, The 2nd Affiliated Hospital, Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - WEI-JIANG ZHAO
- Center for Neuroscience, Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
- Correspondence to: Dr Wei-Jiang Zhao, Center for Neuroscience, Shantou University Medical College, 22 Xinling Road, Shantou, Guangdong 515041, P.R. China, E-mail:
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25
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Characterization of an Apis cerana cerana cytochrome P450 gene (AccCYP336A1) and its roles in oxidative stresses responses. Gene 2016; 584:120-8. [DOI: 10.1016/j.gene.2016.02.016] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 01/28/2016] [Accepted: 02/10/2016] [Indexed: 01/18/2023]
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26
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Baik TK, Kim YJ, Kang SM, Song DY, Min SS, Woo RS. Blocking the phosphatidylinositol 3-kinase pathway inhibits neuregulin-1-mediated rescue of neurotoxicity induced by Aβ1-42. ACTA ACUST UNITED AC 2016; 68:1021-9. [PMID: 27230708 DOI: 10.1111/jphp.12563] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Accepted: 03/29/2016] [Indexed: 12/11/2022]
Abstract
OBJECTIVES Neuregulin-1 (NRG1) has an important role in both the development and the plasticity of the brain as well as neuroprotective properties. In this study, we investigated the downstream pathways of NRG1 signalling and their role in the prevention of Aβ1-42 -induced neurotoxicity. METHODS Lactate dehydrogenase (LDH) release, reactive oxygen species (ROS) generation, superoxide dismutase (SOD) activity and TUNEL staining were assayed to examine the neuroprotective properties in primary rat cortical neurons. KEY FINDINGS The inhibition of PI3K/Akt activation abolished the ability of NRG1 to prevent Aβ1-42 -induced LDH release and increased TUNEL-positive cell count and reactive oxygen species accumulation in primary cortical neurons. CONCLUSIONS Our results demonstrate that NRG1 signalling exerts a neuroprotective effect against Aβ1-42 -induced neurotoxicity via activation of the PI3K/Akt pathway. Furthermore, this suggests that NRG1 has neuroprotective potential for the treatment of AD.
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Affiliation(s)
- Tai-Kyoung Baik
- Department of Anatomy and Neuroscience, College of Medicine, Eulji University, Daejeon, Korea
| | - Young-Jung Kim
- Department of Anatomy and Neuroscience, College of Medicine, Eulji University, Daejeon, Korea
| | - Se-Mi Kang
- Department of Anatomy and Neuroscience, College of Medicine, Eulji University, Daejeon, Korea
| | - Dae-Yong Song
- Department of Anatomy and Neuroscience, College of Medicine, Eulji University, Daejeon, Korea
| | - Sun Seek Min
- Department of Physiology and Biophysics, College of Medicine, Eulji University, Daejeon, Korea
| | - Ran-Sook Woo
- Department of Anatomy and Neuroscience, College of Medicine, Eulji University, Daejeon, Korea
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Monin A, Fournier M, Baumann PS, Cuénod M, Do KQ. Role of Redox Dysregulation in White Matter Anomalies Associated with Schizophrenia. HANDBOOK OF BEHAVIORAL NEUROSCIENCE 2016. [DOI: 10.1016/b978-0-12-800981-9.00028-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Neuregulin 1 Promotes Glutathione-Dependent Neuronal Cobalamin Metabolism by Stimulating Cysteine Uptake. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2016:3849087. [PMID: 27057274 PMCID: PMC4709767 DOI: 10.1155/2016/3849087] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2015] [Revised: 10/10/2015] [Accepted: 10/12/2015] [Indexed: 01/12/2023]
Abstract
Neuregulin 1 (NRG-1) is a key neurotrophic factor involved in energy homeostasis and CNS development, and impaired NRG-1 signaling is associated with neurological disorders. Cobalamin (Cbl), also known as vitamin B12, is an essential micronutrient which mammals must acquire through diet, and neurologic dysfunction is a primary clinical manifestation of Cbl deficiency. Here we show that NRG-1 stimulates synthesis of the two bioactive Cbl species adenosylcobalamin (AdoCbl) and methylcobalamin (MeCbl) in human neuroblastoma cells by both promoting conversion of inactive to active Cbl species and increasing neuronal Cbl uptake. Formation of active Cbls is glutathione- (GSH-) dependent and the NRG-1-initiated increase is dependent upon its stimulation of cysteine uptake by excitatory amino acid transporter 3 (EAAT3), leading to increased GSH. The stimulatory effect of NRG-1 on cellular Cbl uptake is associated with increased expression of megalin, which is known to facilitate Cbl transport in ileum and kidney. MeCbl is a required cofactor for methionine synthase (MS) and we demonstrate the ability of NRG-1 to increase MS activity, and affect levels of methionine methylation cycle metabolites. Our results identify novel neuroprotective roles of NRG-1 including stimulating antioxidant synthesis and promoting active Cbl formation.
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Corcoba A, Steullet P, Duarte JMN, Van de Looij Y, Monin A, Cuenod M, Gruetter R, Do KQ. Glutathione Deficit Affects the Integrity and Function of the Fimbria/Fornix and Anterior Commissure in Mice: Relevance for Schizophrenia. Int J Neuropsychopharmacol 2015; 19:pyv110. [PMID: 26433393 PMCID: PMC4815475 DOI: 10.1093/ijnp/pyv110] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Accepted: 09/24/2015] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Structural anomalies of white matter are found in various brain regions of patients with schizophrenia and bipolar and other psychiatric disorders, but the causes at the cellular and molecular levels remain unclear. Oxidative stress and redox dysregulation have been proposed to play a role in the pathophysiology of several psychiatric conditions, but their anatomical and functional consequences are poorly understood. The aim of this study was to investigate white matter throughout the brain in a preclinical model of redox dysregulation. METHODS In a mouse model with impaired glutathione synthesis (Gclm KO), a state-of-the-art multimodal magnetic resonance protocol at high field (14.1 T) was used to assess longitudinally the white matter structure, prefrontal neurochemical profile, and ventricular volume. Electrophysiological recordings in the abnormal white matter tracts identified by diffusion tensor imaging were performed to characterize the functional consequences of fractional anisotropy alterations. RESULTS Structural alterations observed at peri-pubertal age and adulthood in Gclm KO mice were restricted to the anterior commissure and fornix-fimbria. Reduced fractional anisotropy in the anterior commissure (-7.5% ± 1.9, P<.01) and fornix-fimbria (-4.5% ± 1.3, P<.05) were accompanied by reduced conduction velocity in fast-conducting fibers of the posterior limb of the anterior commissure (-14.3% ± 5.1, P<.05) and slow-conducting fibers of the fornix-fimbria (-8.6% ± 2.6, P<.05). Ventricular enlargement was found at peri-puberty (+25% ± 8 P<.05) but not in adult Gclm KO mice. CONCLUSIONS Glutathione deficit in Gclm KO mice affects ventricular size and the integrity of the fornix-fimbria and anterior commissure. This suggests that redox dysregulation could contribute during neurodevelopment to the impaired white matter and ventricle enlargement observed in schizophrenia and other psychiatric disorders.
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Affiliation(s)
- Alberto Corcoba
- Laboratory for Functional and Metabolic Imaging, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland (Mr Corcoba, and Drs Duarte, Van de Looij, and Gruetter); Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital, CHUV, Lausanne, Switzerland (Mr Corcoba, Drs Steullet, Monin, Cuenod, and Do); Division of Child Growth & Development, University of Geneva, Geneva, Switzerland (Dr Van de Looij); Department of Radiology, University Hospital, Lausanne, Switzerland (Dr Gruetter); Department of Radiology, University Hospital, Geneva, Switzerland (Dr Gruetter)
| | - Pascal Steullet
- Laboratory for Functional and Metabolic Imaging, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland (Mr Corcoba, and Drs Duarte, Van de Looij, and Gruetter); Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital, CHUV, Lausanne, Switzerland (Mr Corcoba, Drs Steullet, Monin, Cuenod, and Do); Division of Child Growth & Development, University of Geneva, Geneva, Switzerland (Dr Van de Looij); Department of Radiology, University Hospital, Lausanne, Switzerland (Dr Gruetter); Department of Radiology, University Hospital, Geneva, Switzerland (Dr Gruetter)
| | - João M N Duarte
- Laboratory for Functional and Metabolic Imaging, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland (Mr Corcoba, and Drs Duarte, Van de Looij, and Gruetter); Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital, CHUV, Lausanne, Switzerland (Mr Corcoba, Drs Steullet, Monin, Cuenod, and Do); Division of Child Growth & Development, University of Geneva, Geneva, Switzerland (Dr Van de Looij); Department of Radiology, University Hospital, Lausanne, Switzerland (Dr Gruetter); Department of Radiology, University Hospital, Geneva, Switzerland (Dr Gruetter)
| | - Yohan Van de Looij
- Laboratory for Functional and Metabolic Imaging, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland (Mr Corcoba, and Drs Duarte, Van de Looij, and Gruetter); Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital, CHUV, Lausanne, Switzerland (Mr Corcoba, Drs Steullet, Monin, Cuenod, and Do); Division of Child Growth & Development, University of Geneva, Geneva, Switzerland (Dr Van de Looij); Department of Radiology, University Hospital, Lausanne, Switzerland (Dr Gruetter); Department of Radiology, University Hospital, Geneva, Switzerland (Dr Gruetter)
| | - Aline Monin
- Laboratory for Functional and Metabolic Imaging, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland (Mr Corcoba, and Drs Duarte, Van de Looij, and Gruetter); Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital, CHUV, Lausanne, Switzerland (Mr Corcoba, Drs Steullet, Monin, Cuenod, and Do); Division of Child Growth & Development, University of Geneva, Geneva, Switzerland (Dr Van de Looij); Department of Radiology, University Hospital, Lausanne, Switzerland (Dr Gruetter); Department of Radiology, University Hospital, Geneva, Switzerland (Dr Gruetter)
| | - Michel Cuenod
- Laboratory for Functional and Metabolic Imaging, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland (Mr Corcoba, and Drs Duarte, Van de Looij, and Gruetter); Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital, CHUV, Lausanne, Switzerland (Mr Corcoba, Drs Steullet, Monin, Cuenod, and Do); Division of Child Growth & Development, University of Geneva, Geneva, Switzerland (Dr Van de Looij); Department of Radiology, University Hospital, Lausanne, Switzerland (Dr Gruetter); Department of Radiology, University Hospital, Geneva, Switzerland (Dr Gruetter)
| | - Rolf Gruetter
- Laboratory for Functional and Metabolic Imaging, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland (Mr Corcoba, and Drs Duarte, Van de Looij, and Gruetter); Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital, CHUV, Lausanne, Switzerland (Mr Corcoba, Drs Steullet, Monin, Cuenod, and Do); Division of Child Growth & Development, University of Geneva, Geneva, Switzerland (Dr Van de Looij); Department of Radiology, University Hospital, Lausanne, Switzerland (Dr Gruetter); Department of Radiology, University Hospital, Geneva, Switzerland (Dr Gruetter)
| | - Kim Q Do
- Laboratory for Functional and Metabolic Imaging, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland (Mr Corcoba, and Drs Duarte, Van de Looij, and Gruetter); Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital, CHUV, Lausanne, Switzerland (Mr Corcoba, Drs Steullet, Monin, Cuenod, and Do); Division of Child Growth & Development, University of Geneva, Geneva, Switzerland (Dr Van de Looij); Department of Radiology, University Hospital, Lausanne, Switzerland (Dr Gruetter); Department of Radiology, University Hospital, Geneva, Switzerland (Dr Gruetter).
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Morishita H, Cabungcal JH, Chen Y, Do KQ, Hensch TK. Prolonged Period of Cortical Plasticity upon Redox Dysregulation in Fast-Spiking Interneurons. Biol Psychiatry 2015; 78:396-402. [PMID: 25758057 PMCID: PMC4514575 DOI: 10.1016/j.biopsych.2014.12.026] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Revised: 12/29/2014] [Accepted: 12/31/2014] [Indexed: 01/07/2023]
Abstract
BACKGROUND Oxidative stress and the specific impairment of perisomatic gamma-aminobutyric acid circuits are hallmarks of the schizophrenic brain and its animal models. Proper maturation of these fast-spiking inhibitory interneurons normally defines critical periods of experience-dependent cortical plasticity. METHODS Here, we linked these processes by genetically inducing a redox dysregulation restricted to such parvalbumin-positive cells and examined the impact on critical period plasticity using the visual system as a model (3-6 mice/group). RESULTS Oxidative stress was accompanied by a significant loss of perineuronal nets, which normally enwrap mature fast-spiking cells to limit adult plasticity. Accordingly, the neocortex remained plastic even beyond the peak of its natural critical period. These effects were not seen when redox dysregulation was targeted in excitatory principal cells. CONCLUSIONS A cell-specific regulation of redox state thus balances plasticity and stability of cortical networks. Mistimed developmental trajectories of brain plasticity may underlie, in part, the pathophysiology of mental illness. Such prolonged developmental plasticity may, in turn, offer a therapeutic opportunity for cognitive interventions targeting brain plasticity in schizophrenia.
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Affiliation(s)
- Hirofumi Morishita
- FM Kirby Neurobiology Center, Department of Neurology, Boston Children’s Hospital, Harvard Medical School, 300 Longwood Ave, Boston, MA 02115, USA
| | - Jan-Harry Cabungcal
- Department of Psychiatry, Center for Psychiatric Neuroscience, Centre Hospitalier Universitaire Vaudois and University of Lausanne, 1008 Prilly-Lausanne, Switzerland
| | - Ying Chen
- School of Pharmacy, University of Colorado at Denver, Boulder, CO USA
| | - Kim Q. Do
- Department of Psychiatry, Center for Psychiatric Neuroscience, Centre Hospitalier Universitaire Vaudois and University of Lausanne, 1008 Prilly-Lausanne, Switzerland
| | - Takao K. Hensch
- FM Kirby Neurobiology Center, Department of Neurology, Boston Children’s Hospital, Harvard Medical School, 300 Longwood Ave, Boston, MA 02115, USA,Center for Brain Science, Department of Molecular Cellular Biology, Harvard University, 52 Oxford Street, Cambridge, MA 02138, USA,Correspondence to:
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Monin A, Baumann PS, Griffa A, Xin L, Mekle R, Fournier M, Butticaz C, Klaey M, Cabungcal JH, Steullet P, Ferrari C, Cuenod M, Gruetter R, Thiran JP, Hagmann P, Conus P, Do KQ. Glutathione deficit impairs myelin maturation: relevance for white matter integrity in schizophrenia patients. Mol Psychiatry 2015; 20:827-38. [PMID: 25155877 DOI: 10.1038/mp.2014.88] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Revised: 04/30/2014] [Accepted: 06/23/2014] [Indexed: 12/18/2022]
Abstract
Schizophrenia pathophysiology implies both abnormal redox control and dysconnectivity of the prefrontal cortex, partly related to oligodendrocyte and myelin impairments. As oligodendrocytes are highly vulnerable to altered redox state, we investigated the interplay between glutathione and myelin. In control subjects, multimodal brain imaging revealed a positive association between medial prefrontal glutathione levels and both white matter integrity and resting-state functional connectivity along the cingulum bundle. In early psychosis patients, only white matter integrity was correlated with glutathione levels. On the other side, in the prefrontal cortex of peripubertal mice with genetically impaired glutathione synthesis, mature oligodendrocyte numbers, as well as myelin markers, were decreased. At the molecular levels, under glutathione-deficit conditions induced by short hairpin RNA targeting the key glutathione synthesis enzyme, oligodendrocyte progenitors showed a decreased proliferation mediated by an upregulation of Fyn kinase activity, reversed by either the antioxidant N-acetylcysteine or Fyn kinase inhibitors. In addition, oligodendrocyte maturation was impaired. Interestingly, the regulation of Fyn mRNA and protein expression was also impaired in fibroblasts of patients deficient in glutathione synthesis. Thus, glutathione and redox regulation have a critical role in myelination processes and white matter maturation in the prefrontal cortex of rodent and human, a mechanism potentially disrupted in schizophrenia.
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Affiliation(s)
- A Monin
- 1] Center for Psychiatric Neuroscience, Centre Hospitalier Universitaire Vaudois and University of Lausanne (CHUV-UNIL), Prilly-Lausanne, Switzerland [2] Department of Psychiatry, Centre Hospitalier Universitaire Vaudois and University of Lausanne (CHUV-UNIL), Prilly-Lausanne, Switzerland
| | - P S Baumann
- 1] Center for Psychiatric Neuroscience, Centre Hospitalier Universitaire Vaudois and University of Lausanne (CHUV-UNIL), Prilly-Lausanne, Switzerland [2] Department of Psychiatry, Centre Hospitalier Universitaire Vaudois and University of Lausanne (CHUV-UNIL), Prilly-Lausanne, Switzerland [3] Service of General Psychiatry, Centre Hospitalier Universitaire Vaudois and University of Lausanne (CHUV-UNIL), Prilly-Lausanne, Switzerland
| | - A Griffa
- 1] Signal Processing Laboratory, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland [2] Department of Radiology, Centre Hospitalier Universitaire Vaudois and University of Lausanne (CHUV-UNIL), Lausanne, Switzerland
| | - L Xin
- Laboratory for Functional and Metabolic Imaging, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - R Mekle
- Physikalisch-Technische Bundesanstalt, Berlin, Germany
| | - M Fournier
- 1] Center for Psychiatric Neuroscience, Centre Hospitalier Universitaire Vaudois and University of Lausanne (CHUV-UNIL), Prilly-Lausanne, Switzerland [2] Department of Psychiatry, Centre Hospitalier Universitaire Vaudois and University of Lausanne (CHUV-UNIL), Prilly-Lausanne, Switzerland
| | - C Butticaz
- 1] Center for Psychiatric Neuroscience, Centre Hospitalier Universitaire Vaudois and University of Lausanne (CHUV-UNIL), Prilly-Lausanne, Switzerland [2] Department of Psychiatry, Centre Hospitalier Universitaire Vaudois and University of Lausanne (CHUV-UNIL), Prilly-Lausanne, Switzerland
| | - M Klaey
- 1] Center for Psychiatric Neuroscience, Centre Hospitalier Universitaire Vaudois and University of Lausanne (CHUV-UNIL), Prilly-Lausanne, Switzerland [2] Department of Psychiatry, Centre Hospitalier Universitaire Vaudois and University of Lausanne (CHUV-UNIL), Prilly-Lausanne, Switzerland
| | - J H Cabungcal
- 1] Center for Psychiatric Neuroscience, Centre Hospitalier Universitaire Vaudois and University of Lausanne (CHUV-UNIL), Prilly-Lausanne, Switzerland [2] Department of Psychiatry, Centre Hospitalier Universitaire Vaudois and University of Lausanne (CHUV-UNIL), Prilly-Lausanne, Switzerland
| | - P Steullet
- 1] Center for Psychiatric Neuroscience, Centre Hospitalier Universitaire Vaudois and University of Lausanne (CHUV-UNIL), Prilly-Lausanne, Switzerland [2] Department of Psychiatry, Centre Hospitalier Universitaire Vaudois and University of Lausanne (CHUV-UNIL), Prilly-Lausanne, Switzerland
| | - C Ferrari
- 1] Center for Psychiatric Neuroscience, Centre Hospitalier Universitaire Vaudois and University of Lausanne (CHUV-UNIL), Prilly-Lausanne, Switzerland [2] Department of Psychiatry, Centre Hospitalier Universitaire Vaudois and University of Lausanne (CHUV-UNIL), Prilly-Lausanne, Switzerland
| | - M Cuenod
- 1] Center for Psychiatric Neuroscience, Centre Hospitalier Universitaire Vaudois and University of Lausanne (CHUV-UNIL), Prilly-Lausanne, Switzerland [2] Department of Psychiatry, Centre Hospitalier Universitaire Vaudois and University of Lausanne (CHUV-UNIL), Prilly-Lausanne, Switzerland
| | - R Gruetter
- 1] Department of Radiology, Centre Hospitalier Universitaire Vaudois and University of Lausanne (CHUV-UNIL), Lausanne, Switzerland [2] Laboratory for Functional and Metabolic Imaging, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - J P Thiran
- 1] Signal Processing Laboratory, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland [2] Department of Radiology, Centre Hospitalier Universitaire Vaudois and University of Lausanne (CHUV-UNIL), Lausanne, Switzerland
| | - P Hagmann
- 1] Signal Processing Laboratory, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland [2] Department of Radiology, Centre Hospitalier Universitaire Vaudois and University of Lausanne (CHUV-UNIL), Lausanne, Switzerland
| | - P Conus
- 1] Department of Psychiatry, Centre Hospitalier Universitaire Vaudois and University of Lausanne (CHUV-UNIL), Prilly-Lausanne, Switzerland [2] Service of General Psychiatry, Centre Hospitalier Universitaire Vaudois and University of Lausanne (CHUV-UNIL), Prilly-Lausanne, Switzerland
| | - K Q Do
- 1] Center for Psychiatric Neuroscience, Centre Hospitalier Universitaire Vaudois and University of Lausanne (CHUV-UNIL), Prilly-Lausanne, Switzerland [2] Department of Psychiatry, Centre Hospitalier Universitaire Vaudois and University of Lausanne (CHUV-UNIL), Prilly-Lausanne, Switzerland
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Rupert CE, Coulombe KL. The roles of neuregulin-1 in cardiac development, homeostasis, and disease. Biomark Insights 2015; 10:1-9. [PMID: 25922571 PMCID: PMC4395047 DOI: 10.4137/bmi.s20061] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Revised: 03/01/2015] [Accepted: 03/04/2015] [Indexed: 02/07/2023] Open
Abstract
Neuregulin-1 (NRG-1) and its signaling receptors, erythroblastic leukemia viral oncogene homologs (ErbB) 2, 3, and 4, have been implicated in both cardiomyocyte development and disease, as well as in homeostatic cardiac function. NRG-1/ErbB signaling is involved in a multitude of cardiac processes ranging from myocardial and cardiac conduction system development to angiogenic support of cardiomyocytes, to cardioprotective effects upon injury. Numerous studies of NRG-1 employ a variety of platforms, including in vitro assays, animal models, and human clinical trials, with equally varying and, sometimes, contradictory outcomes. NRG-1 has the potential to be used as a therapeutic tool in stem cell therapies, tissue engineering applications, and clinical diagnostics and treatment. This review presents a concise summary of the growing body of literature to highlight the temporally persistent significance of NRG-1/ErbB signaling throughout development, homeostasis, and disease in the heart, specifically in cardiomyocytes.
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Affiliation(s)
- Cassady E Rupert
- Center for Biomedical Engineering, School of Engineering, Brown University, Providence, RI, USA
| | - Kareen Lk Coulombe
- Center for Biomedical Engineering, School of Engineering, Brown University, Providence, RI, USA. ; Department of Molecular Pharmacology, Physiology and Biotechnology, Division of Biology and Medicine, Brown University, Providence, RI, USA
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Chen X, Yao P, Chu X, Hao L, Guo X, Xu B. Isolation of arginine kinase from Apis cerana cerana and its possible involvement in response to adverse stress. Cell Stress Chaperones 2015; 20:169-83. [PMID: 25135575 PMCID: PMC4255252 DOI: 10.1007/s12192-014-0535-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Revised: 08/03/2014] [Accepted: 08/05/2014] [Indexed: 02/04/2023] Open
Abstract
Arginine kinases (AK) in invertebrates play the same role as creatine kinases in vertebrates. Both proteins are important for energy metabolism, and previous studies on AK focused on this attribute. In this study, the arginine kinase gene was isolated from Apis cerana cerana and was named AccAK. A 5'-flanking region was also cloned and shown to contain abundant putative binding sites for transcription factors related to development and response to adverse stress. We imitated several abiotic and biotic stresses suffered by A. cerana cerana during their life, including heavy metals, pesticides, herbicides, heat, cold, oxidants, antioxidants, ecdysone, and Ascosphaera apis and then studied the expression patterns of AccAK after these treatments. AccAK was upregulated under all conditions, and, in some conditions, this response was very pronounced. Western blot and AccAK enzyme activity assays confirmed the results. In addition, a disc diffusion assay showed that overexpression of AccAK reduced the resistance of Escherichia coli cells to multiple adverse stresses. Taken together, our results indicated that AccAK may be involved of great significance in response to adverse abiotic and biotic stresses.
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Affiliation(s)
- Xiaobo Chen
- />State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong 271018 People’s Republic of China
| | - Pengbo Yao
- />State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong 271018 People’s Republic of China
| | - Xiaoqian Chu
- />State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong 271018 People’s Republic of China
| | - Lili Hao
- />State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong 271018 People’s Republic of China
| | - Xingqi Guo
- />State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong 271018 People’s Republic of China
| | - Baohua Xu
- />College of Animal Science and Technology, Shandong Agricultural University, Taian, Shandong 271018 People’s Republic of China
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O’Donnell P, Do KQ, Arango C. Oxidative/Nitrosative stress in psychiatric disorders: are we there yet? Schizophr Bull 2014; 40:960-2. [PMID: 24714380 PMCID: PMC4133678 DOI: 10.1093/schbul/sbu048] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Patricio O’Donnell
- Neuroscience Research Unit, Pfizer Inc, Cambridge, MA;,*To whom correspondence should be addressed; Neuroscience Research Unit, Pfizer Inc, 610 Main Street, Cambridge, MA 02139, US; tel: 617-395-0838, fax: 845-474-4276, e-mail:
| | - Kim Q. Do
- Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital, CHUV, Lausanne-Prilly, Switzerland
| | - Celso Arango
- Child and Adolescent Psychiatry Department, Hospital General Universitario Gregorio Marañón School of Medicine, Universidad Complutense, IiSGM, CIBERSAM, Madrid, Spain
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Linying Z, Wei W, Minxia W, Wenmin Z, Liangcheng Z. Neuroprotective effects of neuregulin-1 ß on oligodendrocyte type 2 astrocyte progenitors following oxygen and glucose deprivation. Pediatr Neurol 2014; 50:357-62. [PMID: 24529326 DOI: 10.1016/j.pediatrneurol.2013.12.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Revised: 11/27/2013] [Accepted: 12/07/2013] [Indexed: 11/17/2022]
Abstract
BACKGROUND Hypoxic-ischemic brain injury in neonates, especially in premature infants, is one of the main contributors to the mortality of newborns and can cause nervous system dysfunction in children. The major pathogenesis seems to be cerebral ischemia/reperfusion in the immature white matter that preferentially targets vulnerable premyelinating oligodendrocytes. OBJECTIVES The goal of this study was to culture oligodendrocyte type 2 astrocyte cells in an oxygen and glucose deprivation environment to simulate ischemia injury and examine the cellular and molecular mechanisms involved in the neuroprotective effects of neuregulin-1ß on ischemia-induced immature oligodendrocytes. METHODS Oligodendrocyte type 2 astrocyte cells were cultured from neonatal Sprague-Dawley rat cerebra. The cells were divided into two groups: one was subjected to oxygen and glucose deprivation for 9 hours and the other was treated with 50 ng/mL or 100 ng/mL neuregulin-1β during oxygen and glucose deprivation. Cell survival was determined by Trypan Blue staining and cell apoptosis were observed by fluorescein isothiocyanate-Annexin V and propidium iodide double staining. To study if the PI3K-Akt signaling pathway was involved in the mechanism of protective effect of neuregulin-1ß, Western blot analysis was used to quantitative the changes of protein. RESULTS Treatment with neuregulin-1ß within the period of oxygen and glucose deprivation significantly increased cell survival and also resulted in a significant decrease in cell apoptosis. The neuroprotective effects of neuregulin-1ß were prevented by treatment with Ly294002, an inhibitor of the phosphatidylinositol-3-kinase/Akt pathway. CONCLUSIONS These results suggest that neuregulin-1ß could protect the oligodendrocyte type 2 astrocyte progenitors against hypoxic injury, and the mechanism may be associated with the PI3K-Akt signaling pathway.
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Affiliation(s)
- Zhou Linying
- Department of Pathology, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China; Centre of Neuroscience, Fujian Medical University, Fuzhou, China
| | - Wang Wei
- Centre of Neuroscience, Fujian Medical University, Fuzhou, China.
| | - Wu Minxia
- Department of Pathology, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Zhang Wenmin
- Department of Pathology, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Zhang Liangcheng
- Department of Anaesthesiology, The Affiliated Union Hospital, Fujian Medical University, Fuzhou, China.
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Jiang Z, Cowell RM, Nakazawa K. Convergence of genetic and environmental factors on parvalbumin-positive interneurons in schizophrenia. Front Behav Neurosci 2013; 7:116. [PMID: 24027504 PMCID: PMC3759852 DOI: 10.3389/fnbeh.2013.00116] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Accepted: 08/13/2013] [Indexed: 11/13/2022] Open
Abstract
Schizophrenia etiology is thought to involve an interaction between genetic and environmental factors during postnatal brain development. However, there is a fundamental gap in our understanding of the molecular mechanisms by which environmental factors interact with genetic susceptibility to trigger symptom onset and disease progression. In this review, we summarize the most recent findings implicating oxidative stress as one mechanism by which environmental insults, especially early life social stress, impact the development of schizophrenia. Based on a review of the literature and the results of our own animal model, we suggest that environmental stressors such as social isolation render parvalbumin-positive interneurons (PVIs) vulnerable to oxidative stress. We previously reported that social isolation stress exacerbates many of the schizophrenia-like phenotypes seen in a conditional genetic mouse model in which NMDA receptors (NMDARs) are selectively ablated in half of cortical and hippocampal interneurons during early postnatal development (Belforte et al., 2010). We have since revealed that this social isolation-induced effect is caused by impairments in the antioxidant defense capacity in the PVIs in which NMDARs are ablated. We propose that this effect is mediated by the down-regulation of PGC-1α, a master regulator of mitochondrial energy metabolism and anti-oxidant defense, following the deletion of NMDARs (Jiang et al., 2013). Other potential molecular mechanisms underlying redox dysfunction upon gene and environmental interaction will be discussed, with a focus on the unique properties of PVIs.
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Affiliation(s)
- Zhihong Jiang
- Unit on Genetics of Cognition and Behavior, National Institute of Mental Health, NIH Bethesda, MD, USA
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Perineuronal nets protect fast-spiking interneurons against oxidative stress. Proc Natl Acad Sci U S A 2013; 110:9130-5. [PMID: 23671099 DOI: 10.1073/pnas.1300454110] [Citation(s) in RCA: 370] [Impact Index Per Article: 33.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
A hallmark of schizophrenia pathophysiology is the dysfunction of cortical inhibitory GABA neurons expressing parvalbumin, which are essential for coordinating neuronal synchrony during various sensory and cognitive tasks. The high metabolic requirements of these fast-spiking cells may render them susceptible to redox dysregulation and oxidative stress. Using mice carrying a genetic redox imbalance, we demonstrate that extracellular perineuronal nets, which constitute a specialized polyanionic matrix enwrapping most of these interneurons as they mature, play a critical role in the protection against oxidative stress. These nets limit the effect of genetically impaired antioxidant systems and/or excessive reactive oxygen species produced by severe environmental insults. We observe an inverse relationship between the robustness of the perineuronal nets around parvalbumin cells and the degree of intracellular oxidative stress they display. Enzymatic degradation of the perineuronal nets renders mature parvalbumin cells and fast rhythmic neuronal synchrony more susceptible to oxidative stress. In parallel, parvalbumin cells enwrapped with mature perineuronal nets are better protected than immature parvalbumin cells surrounded by less-condensed perineuronal nets. Although the perineuronal nets act as a protective shield, they are also themselves sensitive to excess oxidative stress. The protection might therefore reflect a balance between the oxidative burden on perineuronal net degradation and the capacity of the system to maintain the nets. Abnormal perineuronal nets, as observed in the postmortem patient brain, may thus underlie the vulnerability and functional impairment of pivotal inhibitory circuits in schizophrenia.
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Vlasova YA, Zakharova IO, Sokolova TV, Avrova NF. Metabolic effects of ganglioside GM1 on PC12 cells in oxidative stress depend on modulation of activity of tyrosine kinase Trk of receptors. J EVOL BIOCHEM PHYS+ 2013. [DOI: 10.1134/s0022093013010039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Cabungcal JH, Steullet P, Kraftsik R, Cuenod M, Do KQ. Early-life insults impair parvalbumin interneurons via oxidative stress: reversal by N-acetylcysteine. Biol Psychiatry 2013; 73:574-82. [PMID: 23140664 DOI: 10.1016/j.biopsych.2012.09.020] [Citation(s) in RCA: 172] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2012] [Revised: 09/24/2012] [Accepted: 09/24/2012] [Indexed: 02/06/2023]
Abstract
BACKGROUND A hallmark of the pathophysiology of schizophrenia is a dysfunction of parvalbumin-expressing fast-spiking interneurons, which are essential for the coordination of neuronal synchrony during sensory and cognitive processing. Oxidative stress as observed in schizophrenia affects parvalbumin interneurons. However, it is unknown whether the deleterious effect of oxidative stress is particularly prevalent during specific developmental time windows. METHODS We used mice with impaired synthesis of glutathione (Gclm knockout [KO] mice) to investigate the effect of redox dysregulation and additional insults applied at various periods of postnatal development on maturation and long-term integrity of parvalbumin interneurons in the anterior cingulate cortex. RESULTS A redox dysregulation, as in Gclm KO mice, renders parvalbumin interneurons but not calbindin or calretinin interneurons vulnerable and prone to exhibit oxidative stress. A glutathione deficit delays maturation of parvalbumin interneurons, including their perineuronal net. Moreover, an additional oxidative challenge in preweaning or pubertal but not in young adult Gclm KO mice reduces the number of parvalbumin-immunoreactive interneurons. This effect persists into adulthood and can be prevented with the antioxidant N-acetylcysteine. CONCLUSIONS In Gclm KO mice, early-life insults inducing oxidative stress are detrimental to immature parvalbumin interneurons and have long-term consequences. In analogy, individuals carrying genetic risks to redox dysregulation would be potentially vulnerable to early-life environmental insults, during the maturation of parvalbumin interneurons. Our data support the need to develop novel therapeutic approaches based on antioxidant and redox regulator compounds such as N-acetylcysteine, which could be used preventively in young at-risk subjects.
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Affiliation(s)
- Jan-Harry Cabungcal
- Department of Psychiatry, Center for Psychiatric Neuroscience, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
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Bayunova LV, Vlasova YA, Sokolova TV, Zakharova IO, Parnova RG, Avrova NF. The protective effect of GD1a ganglioside and inhibitors of nitric oxide synthase after the application of bacterial lipopolysaccharide to PC12 cells. NEUROCHEM J+ 2012. [DOI: 10.1134/s1819712412040058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Ryu J, Yu HN, Cho H, Kim HS, Baik TK, Lee SJ, Woo RS. Neuregulin-1 exerts protective effects against neurotoxicities induced by C-terminal fragments of APP via ErbB4 receptor. J Pharmacol Sci 2012; 119:73-81. [PMID: 22739235 DOI: 10.1254/jphs.12057fp] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Abstract
Neuregulin-1 (NRG1) plays important roles in the development and plasticity of the brain, and it is also reported to have potent neuroprotective properties. We previously reported that NRG1 has neuroprotective actions against Swedish amyloid precursor protein-induced neurotoxicity. In addition to the amyloid beta peptide, other metabolites of amyloid precursor protein (APP) such as the C-terminal fragments of APP (APP-CTs) have been reported to possess cytotoxic effects in neuronal cells. In this study, we investigated whether NRG1 exerts neuroprotective effects against APP-CTs and attempted to determine its neuroprotective mechanisms. NRG1 attenuated the neurotoxicities induced by the expression of APP-CTs in neuronal cells. NRG1 also reduced the accumulation of reactive oxygen species and attenuated mitochondrial membrane potential loss induced by APP-CTs. In addition, NRG1 upregulated the expression of the anti-apoptotic protein Bcl-2. This effect was blocked by the inhibition of ErbB4, a key NRG1 receptor. Taken together, these results demonstrate the neuroprotective potential of NRG1 in Alzheimer's disease.
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Affiliation(s)
- Junghwa Ryu
- Department of Pharmacology and Biomedical Sciences, College of Medicine, Seoul National University, Republic of Korea
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Wang XH, Zhuo XZ, Ni YJ, Gong M, Wang TZ, Lu Q, Ma AQ. Improvement of cardiac function and reversal of gap junction remodeling by Neuregulin-1β in volume-overloaded rats with heart failure. J Geriatr Cardiol 2012; 9:172-9. [PMID: 22916065 PMCID: PMC3418908 DOI: 10.3724/sp.j.1263.2012.03271] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Revised: 04/28/2012] [Accepted: 05/05/2012] [Indexed: 12/20/2022] Open
Abstract
OBJECTIVE We performed experiments using Neuregulin-1β (NRG-1β) treatment to determine a mechanism for the protective role derived from its beneficial effects by remodeling gap junctions (GJs) during heart failure (HF). METHODS Rat models of HF were established by aortocaval fistula. Forty-eight rats were divided randomly into the HF (HF, n = 16), NRG-1β treatment (NRG, n = 16), and sham operation (S, n = 16) group. The rats in the NRG group were administered NRG-1β (10 µg/kg per day) for 7 days via the tail vein, whereas the other groups were injected with the same doses of saline. Twelve weeks after operation, Connexin 43 (Cx43) expression in single myocytes obtained from the left ventricle was determined by immunocytochemistry. Total protein was extracted from frozen left ventricular tissues for immunoblotting assay, and the ultrastructure of myocytes was observed by transmission electron microscopy. RESULTS Compared with the HF group, the cardiac function of rats in the NRG group was markedly improved, irregular distribution and deceased Cx43 expression were relieved. The ultrastructure of myocytes was seriously damaged in HF rats, and NRG-1β reduced these pathological damages. CONCLUSIONS Short-term NRG-1β treatment can rescue pump failure in experimental models of volume overload-induced HF, which is related to the recovery of GJs structure and the improvement of Cx43 expression.
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Affiliation(s)
- Xue-Hui Wang
- Department of Cardiovascular Medicine, the First Affiliated Hospital of Medical School, Xi'an Jiaotong University, No. 277 West Yanta Road, Xi'an 710061, Shaanxi Province, China
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an Jiaotong University, Xi'an 710061, Shaanxi Province, China
- Department of Cardiovascular Medicine, First Hospital of Xinxiang Medical College, Xinxiang 453000, Henan Province, China
| | - Xiao-Zhen Zhuo
- Department of Cardiovascular Medicine, the First Affiliated Hospital of Medical School, Xi'an Jiaotong University, No. 277 West Yanta Road, Xi'an 710061, Shaanxi Province, China
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an Jiaotong University, Xi'an 710061, Shaanxi Province, China
| | - Ya-Juan Ni
- Department of Cardiovascular Medicine, the First Affiliated Hospital of Medical School, Xi'an Jiaotong University, No. 277 West Yanta Road, Xi'an 710061, Shaanxi Province, China
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an Jiaotong University, Xi'an 710061, Shaanxi Province, China
| | - Min Gong
- Department of Cardiovascular Medicine, the First Affiliated Hospital of Medical School, Xi'an Jiaotong University, No. 277 West Yanta Road, Xi'an 710061, Shaanxi Province, China
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an Jiaotong University, Xi'an 710061, Shaanxi Province, China
| | - Ting-Zhong Wang
- Department of Cardiovascular Medicine, the First Affiliated Hospital of Medical School, Xi'an Jiaotong University, No. 277 West Yanta Road, Xi'an 710061, Shaanxi Province, China
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an Jiaotong University, Xi'an 710061, Shaanxi Province, China
| | - Qun Lu
- Department of Cardiovascular Medicine, the First Affiliated Hospital of Medical School, Xi'an Jiaotong University, No. 277 West Yanta Road, Xi'an 710061, Shaanxi Province, China
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an Jiaotong University, Xi'an 710061, Shaanxi Province, China
| | - Ai-Qun Ma
- Department of Cardiovascular Medicine, the First Affiliated Hospital of Medical School, Xi'an Jiaotong University, No. 277 West Yanta Road, Xi'an 710061, Shaanxi Province, China
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an Jiaotong University, Xi'an 710061, Shaanxi Province, China
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Rodríguez-Blanco J, Martín V, García-Santos G, Herrera F, Casado-Zapico S, Antolín I, Rodriguez C. Cooperative action of JNK and AKT/mTOR in 1-methyl-4-phenylpyridinium-induced autophagy of neuronal PC12 cells. J Neurosci Res 2012; 90:1850-60. [PMID: 22513717 DOI: 10.1002/jnr.23066] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2011] [Revised: 02/29/2012] [Accepted: 03/04/2012] [Indexed: 01/01/2023]
Abstract
Parkinson's disease has been widely related to both apoptosis and oxidative stress. Many publications relate the loss of mitochondrial potential to an apoptosis-mediated cell death in different in vivo and in vitro models of this pathology. The present study used the dopaminegic specific neurotoxin 1-methyl-4-phenylpyridinium (MPP(+) ) on neuron-like PC12 cells, which is a well-accepted model of Parkinson's disease. Results showed an early increase in oxidants, which drives the modulation of c-Jun N-terminal kinase (JNK) and AKT/mammalian target of rapamycin (mTOR) pathways, mimicking peroxide treatment. However, the cell death found in neuronal PC12 cells treated with MPP(+) was not a caspase-associated apoptosis. Electron microscopic images illustrated autophagic cell death, which was confirmed by a Beclin-1 and ATG expression increase, accumulation of acidic vesicles, and rescue by an autophagy inhibitor. In conclusion, the boost in oxidants from MPP(+) treatment in neuronal PC12 is modulating both survival (AKT/mTOR) and death (JNK) pathways, which are the perpetrators of an autophagic cell death.
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Affiliation(s)
- Jezabel Rodríguez-Blanco
- Departamento de Morfología y Biología Celular, Facultad de Medicina, Universidad de Oviedo, Oviedo, Spain
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Hua Y, Gorshkov K, Yang Y, Wang W, Zhang N, Hughes DPM. Slow down to stay alive: HER4 protects against cellular stress and confers chemoresistance in neuroblastoma. Cancer 2012; 118:5140-54. [PMID: 22415601 DOI: 10.1002/cncr.27496] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2011] [Revised: 01/18/2012] [Accepted: 01/19/2012] [Indexed: 12/22/2022]
Abstract
BACKGROUND Neuroblastoma (NBL) is a common pediatric solid tumor, and outcomes for patients with advanced neuroblastoma remain poor despite extremely aggressive treatment. Chemotherapy resistance at relapse contributes heavily to treatment failure. The poor survival of patients with high-risk NBL prompted this investigation into novel treatment options with the objective of gaining a better understanding of resistance mechanisms. On the basis of previous work and on data from publicly available studies, the authors hypothesized that human epidermal growth factor receptor 4 (Her4) contributes to resistance. METHODS Her4 expression was reduced with small-hairpin RNA (shRNA) to over express intracellular HER4, and the authors tested its impact on tumor cell survival under various culture conditions. The resulting changes in gene expression after HER4 knockdown were measured by using a messenger RNA (mRNA) array. RESULTS HER4 expression was up-regulated in tumor spheres compared with the expression in monolayer culture. With HER4 knockdown, NBL cells became less resistant to anoikis and serum starvation. Moreover, HER4 knockdown increased the chemosensitivity of NBL cells to cisplatin, doxorubicin, etoposide, and activated ifosfamide. In mRNA array analysis, HER4 knockdown predominately altered genes related to cell cycle regulation. In NBL spheres compared with monolayers, cell proliferation was decreased, and cyclin D expression was reduced. HER4 knockdown reversed cyclin D suppression. Overexpressed intracellular HER4 slowed the cell cycle and induced chemoresistance. CONCLUSIONS The current results indicated that HER4 protects NBL cells from multiple exogenous apoptotic stimuli, including anoikis, nutrient deficiency, and cytotoxic chemotherapy. The intracellular fragment of HER4 was sufficient to confer this phenotype. HER4 functions as a cell cycle suppressor, maintaining resistance to cellular stress. The current findings indicate that HER4 overexpression may be associated with refractory disease, and HER4 may be an important therapeutic target.
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Affiliation(s)
- Yingqi Hua
- Department of Pediatrics Research, Children's Cancer Hospital, The University of Texas M. D. Anderson Cancer Center, Houston, TX 77030, USA
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Abe S, Azuma A, Mukae H, Ogura T, Taniguchi H, Bando M, Sugiyama Y. Polymyxin B-immobilized fiber column (PMX) treatment for idiopathic pulmonary fibrosis with acute exacerbation: a multicenter retrospective analysis. Intern Med 2012; 51:1487-91. [PMID: 22728479 DOI: 10.2169/internalmedicine.51.6965] [Citation(s) in RCA: 88] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
OBJECTIVE The prognosis of idiopathic pulmonary fibrosis (IPF) patients with acute exacerbation (AE) is reported to be extremely poor. Several clinical studies suggest that direct hemoperfusion with polymyxin B-immobilized fiber (PMX) may have beneficial effects on AE in patients with interstitial pneumonia (IP). The aim of this multicenter retrospective analysis was to investigate whether PMX treatment could provide improvement of oxygenation and survival benefits in IPF patients with AE. METHODS We conducted a retrospective study of 160 IP patients (including 73 IPF) with AE treated by PMX at 18 institutions in Japan. PMX treatment was carried out twice. The total hemoperfusion time of PMX treatment was, on average, 12 hours. Data concerning oxygenation on PMX treatment and survival after AE were collected and analyzed. RESULTS In IPF patients with AE, arterial oxygen tension (PaO(2))/inspiratory oxygen fraction (FiO(2)), (P/F) ratio was significantly improved at the end of the 2nd treatment with PMX (173.9 ± 105.4 to 195.2 ± 106.8 Torr, p=0.003). White blood cell count was significantly reduced at the end of the 2nd treatment (13,330 ± 7,002 to 9,426 ± 5,188 /mm(3), p<0.001). These clinical changes were also observed on analysis of all 160 IP patients with AE. The one- and three-month survival rates of IPF patients after AE were 70.1% and 34.4%, respectively. CONCLUSION PMX treatment may improve oxygenation and survival in IPF patients with AE. Prospective, controlled trials of PMX treatment for IPF with AE are warranted to verify this potential benefit.
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Affiliation(s)
- Shinji Abe
- Internal Medicine, Department of Pulmonary Medicine/Infection and Oncology, Nippon Medical School, Japan.
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Woo RS, Lee JH, Kim HS, Baek CH, Song DY, Suh YH, Baik TK. Neuregulin-1 protects against neurotoxicities induced by Swedish amyloid precursor protein via the ErbB4 receptor. Neuroscience 2011; 202:413-23. [PMID: 22186019 DOI: 10.1016/j.neuroscience.2011.11.026] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2011] [Revised: 11/08/2011] [Accepted: 11/08/2011] [Indexed: 12/25/2022]
Abstract
Neuregulin-1 (NRG1) plays an important role in the development and plasticity of the brain and exhibits potent neuroprotective properties. However, little information on its role in Alzheimer's disease (AD) is known. The neuroprotective effect and mechanisms of NRG1 in SH-SY5Y cells overexpressing the Swedish mutant form of amyloid precursor protein (Swe-APP) and primary cortical neuronal cells treated with amyloid beta peptide(1-42) (Aβ(1-42)) were investigated in this study. NRG1 attenuated Swe-APP- or Aβ(1-42)-induced lactate dehydrogenase (LDH) release in a concentration-dependent manner. The mitigating effects of NRG1 on neuronal cell death were blocked by ErbB4 inhibition, a key NRG1 receptor, which suggests a role of ErbB4 in the neuroprotective function of NRG1. Moreover, NRG1 reduced the number of Swe-APP- and Aβ(1-42)-induced TUNEL-positive SH-SY5Y cells and primary cortical neurons, respectively. NRG1 reduced the accumulation of reactive oxygen species and attenuated Swe-APP-induced mitochondrial membrane potential loss. NRG1 also induced the upregulation of the expression of the anti-apoptotic protein, Bcl-2, and decreased caspase-3 activation. Collectively, our results demonstrate that NRG1 exerts neuroprotective effects via the ErbB4 receptor, which suggests the neuroprotective potential of NRG1 in AD.
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Affiliation(s)
- R-S Woo
- Department of Anatomy and Neuroscience, College of Medicine, Eulji University, Daejeon, Republic of Korea
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Nogueira NPDA, de Souza CF, Saraiva FMDS, Sultano PE, Dalmau SR, Bruno RE, de Lima Sales Gonçalves R, Laranja GAT, Leal LHM, Coelho MGP, Masuda CA, Oliveira MF, Paes MC. Heme-induced ROS in Trypanosoma cruzi activates CaMKII-like that triggers epimastigote proliferation. One helpful effect of ROS. PLoS One 2011; 6:e25935. [PMID: 22022475 PMCID: PMC3191175 DOI: 10.1371/journal.pone.0025935] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2011] [Accepted: 09/14/2011] [Indexed: 11/18/2022] Open
Abstract
Heme is a ubiquitous molecule that has a number of physiological roles. The toxic effects of this molecule have been demonstrated in various models, based on both its pro-oxidant nature and through a detergent mechanism. It is estimated that about 10 mM of heme is released during blood digestion in the blood-sucking bug's midgut. The parasite Trypanosoma cruzi, the agent of Chagas' disease, proliferates in the midgut of the insect vector; however, heme metabolism in trypanosomatids remains to be elucidated. Here we provide a mechanistic explanation for the proliferative effects of heme on trypanosomatids. Heme, but not other porphyrins, induced T. cruzi proliferation, and this phenomenon was accompanied by a marked increase in reactive oxygen species (ROS) formation in epimastigotes when monitored by ROS-sensitive fluorescent probes. Heme-induced ROS production was time-and concentration-dependent. In addition, lipid peroxidation and the formation of 4-hydroxy-2-nonenal (4-HNE) adducts with parasite proteins were increased in epimastigotes in the presence of heme. Conversely, the antioxidants urate and GSH reversed the heme-induced ROS. Urate also decreased parasite proliferation. Among several protein kinase inhibitors tested only specific inhibitors of CaMKII, KN93 and Myr-AIP, were able to abolish heme-induced ROS formation in epimastigotes leading to parasite growth impairment. Taken together, these data provide new insight into T. cruzi- insect vector interactions: heme, a molecule from the blood digestion, triggers epimastigote proliferation through a redox-sensitive signalling mechanism.
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Affiliation(s)
- Natália Pereira de Almeida Nogueira
- Laboratório de Artrópodos Hematófagos, Instituto de Bioquímica Médica, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brasil
| | - Cintia Fernandes de Souza
- Laboratório de Interação Tripanossomatídeos e Vetores, Departamento de Bioquímica, Instituto de Biologia Roberto Alcântara Gomes (IBRAG), Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro, Brasil
| | - Francis Monique de Souza Saraiva
- Laboratório de Interação Tripanossomatídeos e Vetores, Departamento de Bioquímica, Instituto de Biologia Roberto Alcântara Gomes (IBRAG), Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro, Brasil
| | - Pedro Elias Sultano
- Laboratório de Interação Tripanossomatídeos e Vetores, Departamento de Bioquímica, Instituto de Biologia Roberto Alcântara Gomes (IBRAG), Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro, Brasil
| | - Sergio Ranto Dalmau
- Laboratório de Interação Tripanossomatídeos e Vetores, Departamento de Bioquímica, Instituto de Biologia Roberto Alcântara Gomes (IBRAG), Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro, Brasil
| | - Roberta Eitler Bruno
- Laboratório de Interação Tripanossomatídeos e Vetores, Departamento de Bioquímica, Instituto de Biologia Roberto Alcântara Gomes (IBRAG), Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro, Brasil
| | - Renata de Lima Sales Gonçalves
- Laboratório de Bioquímica Redox - Instituto de Bioquímica Médica, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brasil
| | - Gustavo Augusto Travassos Laranja
- Laboratório de Interação Tripanossomatídeos e Vetores, Departamento de Bioquímica, Instituto de Biologia Roberto Alcântara Gomes (IBRAG), Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro, Brasil
| | - Luís Henrique Monteiro Leal
- Laboratório de Microscopia e Processamento de Imagens, Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro, Brasil
| | - Marsen Garcia Pinto Coelho
- Laboratório de Interação Tripanossomatídeos e Vetores, Departamento de Bioquímica, Instituto de Biologia Roberto Alcântara Gomes (IBRAG), Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro, Brasil
| | - Claudio A. Masuda
- Laboratório de Biologia Molecular de Leveduras, Programa de Biologia Molecular e Biotecnologia, Instituto de Bioquímica Médica, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brasil
| | - Marcus F. Oliveira
- Laboratório de Bioquímica Redox - Instituto de Bioquímica Médica, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brasil
- Laboratório de Inflamação e Metabolismo, Instituto Nacional de Ciência e Tecnologia de Biologia Estrutural e Bioimagem (INBEB), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brasil
| | - Marcia Cristina Paes
- Laboratório de Interação Tripanossomatídeos e Vetores, Departamento de Bioquímica, Instituto de Biologia Roberto Alcântara Gomes (IBRAG), Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro, Brasil
- Instituto Nacional de Ciência e Tecnologia - Entomologia Molecular (INCT-EM), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brasil
- * E-mail:
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Yang S, Gao Q, Xing S, Feng X, Peng L, Dong H, Bao L, Zhang J, Hu Y, Li G, Song T, Li Z, Sun J. Neuroprotective effects of Buyang Huanwu decoction against hydrogen peroxide induced oxidative injury in Schwann cells. JOURNAL OF ETHNOPHARMACOLOGY 2011; 137:1095-1101. [PMID: 21782917 DOI: 10.1016/j.jep.2011.07.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2010] [Revised: 06/20/2011] [Accepted: 07/06/2011] [Indexed: 05/31/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Buyang Huanwu decoction (BYHWD) is a traditional Chinese medicine and can be used to promote peripheral nerve regeneration. However the regenerative mechanism of BYHWD remains unclear. The objective of this study was to investigate the protective mechanisms of BYHWD in Schwann cells damaged by hydrogen peroxide (H(2)O(2)). MATERIALS AND METHODS Schwann cells which were derived from neonatal sciatic nerves of rats were used in subsequent experiments. Schwann cells were injured by various concentrations of H(2)O(2) (0.25, 0.5 and 1mM final concentration). BYHWD (600 μg/ml final concentration) was added to the medium either simultaneously or 1h later after the addition of H(2)O(2). Subsequently, methyl thiazolyl tetrazolium (MTT) assay was performed. Superoxide dismutase (SOD) activity and malondialdehyde (MDA) levels were also examined after 12h. The expression of Caspase 3 and the concentration of intercellular Ca(2+) ([Ca(2+)]i) were also determined. RESULTS Among three concentrations of H(2)O(2), 0.5mM H(2)O(2) induced Schwann cells swelled and neuritis disappeared after 12h. In the presence of BYHWD, MTT assay showed that more cells were viable in comparison with the H(2)O(2) injury group. Moreover, the addition of BYHWD has also increased the SOD activity with decreased in MDA level. Furthermore, the concentration of [Ca(2+)]i and expression of Caspase 3 were decreased with the addition of BYHWD in culture. CONCLUSIONS Our results revealed that BYHWD protected Schwann cells from oxidative injury. The mechanism of BYHWD promoting neural regeneration possibly associated with its anti-oxidative activity.
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Affiliation(s)
- Shuhua Yang
- Key Laboratory of the Ministry of Education for Experimental Teratology and Department of Anatomy, PR China
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Woo RS, Lee JH, Yu HN, Song DY, Baik TK. Expression of ErbB4 in the neurons of Alzheimer's disease brain and APP/PS1 mice, a model of Alzheimer's disease. Anat Cell Biol 2011; 44:116-27. [PMID: 21829755 PMCID: PMC3145840 DOI: 10.5115/acb.2011.44.2.116] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2011] [Revised: 04/21/2011] [Accepted: 05/02/2011] [Indexed: 01/10/2023] Open
Abstract
Neuregulin-1 (NRG1) plays important roles in the development and plasticity of the brain, and has also been reported to exhibit potent neuroprotective properties. Although ErbB4, a key NRG1 receptor, is expressed in multiple regions in the adult animal brain, little is known about its role in Alzheimer's disease (AD). AD is characterized by progressive impairment of cognition and behavioral disturbance that strongly correlate with degeneration and death of neurons in the cerebral cortex and limbic brain areas, such as the hippocampus and the amygdala. Here, we show that the ErbB4 and phospho-ErbB4 immunoreactivities were higher intensity in the neurons of the CA1-2 transitional field of AD brains as compared to age-matched controls. Also, ErbB4 expression was increased in the neurons of the cortico medial nucleus amygdala, human basal forebrain and superior frontal gyrus of AD brains. In cerebral cortex and hippocampus of amyloid precursor protein/presenilin 1 double transgenic mice, ErbB4 immunoreactivity significantly increased in comparison to age-matched wild type control. These results suggest that up-regulating of ErbB4 immunoreactivity may involve in the progression of pathology of AD.
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Affiliation(s)
- Ran-Sook Woo
- Department of Anatomy and Neuroscience, College of Medicine, Eulji University, Daejeon, Korea
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