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Wang TY, Weng EFJ, Hsu YC, Shiu LP, Huang TW, Wu HC, Hong JS, Wang SM. Inhibition of MMP8 effectively alleviates manic-like behavior and reduces neuroinflammation by modulating astrocytic CEBPD. J Neuroinflammation 2024; 21:61. [PMID: 38419037 PMCID: PMC10900742 DOI: 10.1186/s12974-024-03054-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 02/24/2024] [Indexed: 03/02/2024] Open
Abstract
There is an intrinsic relationship between psychiatric disorders and neuroinflammation, including bipolar disorder. Ouabain, an inhibitor of Na+/K+-ATPase, has been implicated in the mouse model with manic-like behavior. However, the molecular mechanisms linking neuroinflammation and manic-like behavior require further investigation. CCAAT/Enhancer-Binding Protein Delta (CEBPD) is an inflammatory transcription factor that contributes to neurological disease progression. In this study, we demonstrated that the expression of CEBPD in astrocytes was increased in ouabain-treated mice. Furthermore, we observed an increase in the expression and transcript levels of CEBPD in human primary astrocytes following ouabain treatment. Transcriptome analysis revealed high MMP8 expression in human primary astrocytes following CEBPD overexpression and ouabain treatment. We confirmed that MMP8 is a CEBPD-regulated gene that mediates ouabain-induced neuroinflammation. In our animal model, treatment of ouabain-injected mice with M8I (an inhibitor of MMP8) resulted in the inhibition of manic-like behavior compared to ouabain-injected mice that were not treated with M8I. Additionally, the reduction in the activation of astrocytes and microglia was observed, particularly in the hippocampal CA1 region. Excessive reactive oxygen species formation was observed in ouabain-injected mice, and treating these mice with M8I resulted in the reduction of oxidative stress, as indicated by nitrotyrosine staining. These findings suggest that MMP8 inhibitors may serve as therapeutic agents in mitigating manic symptoms in bipolar disorder.
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Affiliation(s)
- Tzu-Yun Wang
- Department of Psychiatry, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Eddie Feng-Ju Weng
- Neuroscience and Brain Disease Center, China Medical University, Taichung, Taiwan
- Graduate Institute of Biomedical Sciences, College of Medicine, China Medical University, Taichung, 404333, Taiwan
| | - Yun-Chen Hsu
- Neuroscience and Brain Disease Center, China Medical University, Taichung, Taiwan
- School of Medicine, College of Medicine, China Medical University, Taichung, Taiwan
| | - Lu-Ping Shiu
- Neuroscience and Brain Disease Center, China Medical University, Taichung, Taiwan
| | - Teng-Wei Huang
- Neuroscience and Brain Disease Center, China Medical University, Taichung, Taiwan
- Graduate Institute of Biomedical Sciences, College of Medicine, China Medical University, Taichung, 404333, Taiwan
- Ph.D. Program for Aging, China Medical University, Taichung, Taiwan
| | - Hsuan-Cheng Wu
- Neuroscience and Brain Disease Center, China Medical University, Taichung, Taiwan
- Graduate Institute of Biomedical Sciences, College of Medicine, China Medical University, Taichung, 404333, Taiwan
| | - Jau-Shyong Hong
- Neurobiology Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, 111 T.W. Alexander Dr., Research Triangle Park, Durham, NC, 27709, USA
| | - Shao-Ming Wang
- Neuroscience and Brain Disease Center, China Medical University, Taichung, Taiwan.
- Graduate Institute of Biomedical Sciences, College of Medicine, China Medical University, Taichung, 404333, Taiwan.
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2
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Wang SM, Hsu JYC, Ko CY, Wu HE, Hsiao YW, Wang JM. Astrocytic Cebpd Regulates Pentraxin 3 Expression to Promote Fibrotic Scar Formation After Spinal Cord Injury. Mol Neurobiol 2023; 60:2200-2208. [PMID: 36633805 PMCID: PMC9984521 DOI: 10.1007/s12035-023-03207-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Accepted: 12/29/2022] [Indexed: 01/13/2023]
Abstract
Astroglial-fibrotic scars resulted from spinal cord injury affect motor and sensory function, leading to paralysis. In particular, the fibrotic scar is a main barrier that disrupts neuronal regeneration after spinal cord injury. However, the association between astrocytes and fibrotic scar formation is not yet understood. We have previously demonstrated that the transcriptional factor Cebpd contributes to astrogliosis, which promotes glial scar formation after spinal cord injury. Herein, we show that fibrotic scar formation was decreased in the epicenter region in Cebpd-/- mice after contusive spinal cord injury and astrocytic Cebpd promoted fibroblast migration through secretion of Ptx3. Furthermore, the expression of Mmp3 was increased under recombinant protein Ptx3 treatment in fibroblasts by observing microarray data, resulting in fibroblast migration. In addition, regulation of Mmp3 occurs through the NFκB signaling pathway by using an irreversible inhibitor of IκBα phosphorylation in pretreated fibroblasts. Of note, we used the synthetic peptide RI37, which blocks fibroblast migration and decreases fibroblast Mmp3 expression in IL-1β-treated astrocyte conditioned media. Collectively, our data suggest that fibroblast migration can be affected by astrocytic Cebpd through the Ptx3/NFκB/Mmp3 axis pathway and that the RI37 peptide may act as a therapeutic medicine to inhibit fibrotic scar formation after spinal cord injury.
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Affiliation(s)
- Shao-Ming Wang
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, 404333, Taiwan. .,Neuroscience and Brain Disease Center, China Medical University, Taichung, Taiwan. .,Department of Neurology, China Medical University Hospital, Taichung, Taiwan.
| | - Jung-Yu C Hsu
- Department of Cell Biology and Anatomy, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chiung-Yuan Ko
- Ph.D. Program in Medical Neuroscience, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan.,TMU Research Center of Neuroscience, Taipei Medical University, Taipei, Taiwan.,TMU Research Center of Cancer Translational Medicine, Taipei, Taiwan
| | - Hsiang-En Wu
- Cellular Pathobiology Section, Integrative Neuroscience Research Branch, Intramural Research Program, National Institute on Drug Abuse, NIH/DHHS, Suite 3512, 333 Cassell Drive, Baltimore, MD, 21224, USA
| | - Yu-Wei Hsiao
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, Taiwan
| | - Ju-Ming Wang
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, Taiwan. .,Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan. .,International Research Center for Wound Repair and Regeneration, National Cheng Kung University, Tainan, Taiwan. .,Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan. .,Institute of Bioinformatics and Biosignal Transduction, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, 701, Taiwan.
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3
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Inhibition of MZF1/c-MYC Axis by Cantharidin Impairs Cell Proliferation in Glioblastoma. Int J Mol Sci 2022; 23:ijms232314727. [PMID: 36499054 PMCID: PMC9740304 DOI: 10.3390/ijms232314727] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/15/2022] [Accepted: 11/23/2022] [Indexed: 11/27/2022] Open
Abstract
Myeloid zinc finger 1 (MZF1), also known as zinc finger protein 42, is a zinc finger transcription factor, belonging to the Krüppel-like family that has been implicated in several types of malignancies, including glioblastoma multiforme (GBM). MZF1 is reportedly an oncogenic gene that promotes tumor progression. Moreover, higher expression of MZF1 has been associated with a worse overall survival rate among patients with GBM. Thus, MZF1 may be a promising target for therapeutic interventions. Cantharidin (CTD) has been traditionally used in Chinese medicine to induce apoptosis and inhibit cancer cell proliferation; however, the mechanism by which CTD inhibits cell proliferation remains unclear. In this study, we found that the expression of MZF1 was higher in GBM tissues than in adjacent normal tissues and low-grade gliomas. Additionally, the patient-derived GBM cells and GBM cell lines presented higher levels of MZF1 than normal human astrocytes. We demonstrated that CTD had greater anti-proliferative effects on GBM than a derivative of CTD, norcantharidin (NCTD). MZF1 expression was strongly suppressed by CTD treatment. Furthermore, MZF1 enhanced the proliferation of GBM cells and upregulated the expression of c-MYC, whereas these effects were reversed by CTD treatment. The results of our study suggest that CTD may be a promising therapeutic agent for patients with GBM and suggest a promising direction for further investigation.
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4
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Gao L, Zhang Y, Sterling K, Song W. Brain-derived neurotrophic factor in Alzheimer's disease and its pharmaceutical potential. Transl Neurodegener 2022; 11:4. [PMID: 35090576 PMCID: PMC8796548 DOI: 10.1186/s40035-022-00279-0] [Citation(s) in RCA: 145] [Impact Index Per Article: 72.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Accepted: 01/01/2022] [Indexed: 12/14/2022] Open
Abstract
Synaptic abnormalities are a cardinal feature of Alzheimer's disease (AD) that are known to arise as the disease progresses. A growing body of evidence suggests that pathological alterations to neuronal circuits and synapses may provide a mechanistic link between amyloid β (Aβ) and tau pathology and thus may serve as an obligatory relay of the cognitive impairment in AD. Brain-derived neurotrophic factors (BDNFs) play an important role in maintaining synaptic plasticity in learning and memory. Considering AD as a synaptic disorder, BDNF has attracted increasing attention as a potential diagnostic biomarker and a therapeutical molecule for AD. Although depletion of BDNF has been linked with Aβ accumulation, tau phosphorylation, neuroinflammation and neuronal apoptosis, the exact mechanisms underlying the effect of impaired BDNF signaling on AD are still unknown. Here, we present an overview of how BDNF genomic structure is connected to factors that regulate BDNF signaling. We then discuss the role of BDNF in AD and the potential of BDNF-targeting therapeutics for AD.
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Affiliation(s)
- Lina Gao
- Shandong Collaborative Innovation Center for Diagnosis, Treatment and Behavioral Interventions of Mental Disorders, Institute of Mental Health, College of Pharmacy, Jining Medical University, Jining, 272067, Shandong, China
- Townsend Family Laboratories, Department of Psychiatry, The University of British Columbia, 2255 Wesbrook Mall, Vancouver, BC, V6T 1Z3, Canada
| | - Yun Zhang
- National Clinical Research Center for Geriatric Disorders, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - Keenan Sterling
- Townsend Family Laboratories, Department of Psychiatry, The University of British Columbia, 2255 Wesbrook Mall, Vancouver, BC, V6T 1Z3, Canada
| | - Weihong Song
- Shandong Collaborative Innovation Center for Diagnosis, Treatment and Behavioral Interventions of Mental Disorders, Institute of Mental Health, College of Pharmacy, Jining Medical University, Jining, 272067, Shandong, China.
- Townsend Family Laboratories, Department of Psychiatry, The University of British Columbia, 2255 Wesbrook Mall, Vancouver, BC, V6T 1Z3, Canada.
- National Clinical Research Center for Geriatric Disorders, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China.
- Institute of Aging, Key Laboratory of Alzheimer's Disease of Zhejiang Province, School of Mental Health and The Affiliated Kangning Hospital, Wenzhou Medical University, Wenzhou, 325000, Zhejiang, China.
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou, 325001, Zhejiang, China.
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5
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Bu S, Lv Y, Liu Y, Qiao S, Wang H. Zinc Finger Proteins in Neuro-Related Diseases Progression. Front Neurosci 2021; 15:760567. [PMID: 34867169 PMCID: PMC8637543 DOI: 10.3389/fnins.2021.760567] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 10/11/2021] [Indexed: 01/02/2023] Open
Abstract
Zinc finger proteins (ZNF) are among the most abundant proteins in eukaryotic genomes. It contains several zinc finger domains that can selectively bind to certain DNA or RNA and associate with proteins, therefore, ZNF can regulate gene expression at the transcriptional and translational levels. In terms of neurological diseases, numerous studies have shown that many ZNF are associated with neurological diseases. The purpose of this review is to summarize the types and roles of ZNF in neuropsychiatric disorders. We will describe the structure and classification of ZNF, then focus on the pathophysiological role of ZNF in neuro-related diseases and summarize the mechanism of action of ZNF in neuro-related diseases.
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Affiliation(s)
- Siyuan Bu
- Department of Pharmacology, School of Medicine, Southeast University, Nanjing, China
| | - Yihan Lv
- Department of Pharmacology, School of Medicine, Southeast University, Nanjing, China
| | - Yusheng Liu
- Department of Pharmacology, School of Medicine, Southeast University, Nanjing, China
| | - Sen Qiao
- Department of Pharmacology, Center for Molecular Signaling (PZMS), School of Medicine, Saarland University, Homburg, Germany
| | - Hongmei Wang
- Department of Pharmacology, School of Medicine, Southeast University, Nanjing, China
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6
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Wang SM, Lin WC, Lin HY, Chen YL, Ko CY, Wang JM. CCAAT/Enhancer-binding protein delta mediates glioma stem-like cell enrichment and ATP-binding cassette transporter ABCA1 activation for temozolomide resistance in glioblastoma. Cell Death Discov 2021; 7:8. [PMID: 33436575 PMCID: PMC7804954 DOI: 10.1038/s41420-020-00399-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 12/03/2020] [Accepted: 12/23/2020] [Indexed: 12/11/2022] Open
Abstract
Glioblastoma (GBM) is the most aggressive brain tumor and relapses after chemo- or radiotherapy in a short time. The anticancer drug temozolamide (TMZ) is commonly used for GBM treatment, but glioma stem-like cells (GSCs) often lead to drug resistance and therapeutic failure. To date, the mechanism of GSC formation in TMZ-treated GBM remains largely unknown. CCAAT/Enhancer-binding protein delta (CEBPD) is an inflammation-responsive transcription factor and is proposed to be oncogenic in the context of drug resistance, prompting us to clarify its role in TMZ-resistant GBM. In this study, we first found that the CEBPD protein levels in GBM patients were significantly increased and further contributed to TMZ resistance by promoting GSC formation. Accordingly, the protein levels of stemness transcription factors, namely, SRY-box transcription factor 2 (SOX2), octamer-binding transcription factor 4 (OCT4), NANOG, and ATP-binding cassette subfamily A member 1 (ABCA1), were increased in GSCs and TMZ-treated GBM cells. Increased binding of CEBPD to promoter regions was observed in GSCs, indicating the direct regulation of these GSC-related genes by CEBPD. In addition, an ABCA1 inhibitor increased the caspase 3/7 activity of TMZ-treated GSCs, suggesting that TMZ efflux is controlled by ABCA1 activity and that the expression levels of the ABCA1 gene are an indicator of the efficiency of TMZ treatment. Together, we revealed the mechanism of CEBPD-mediated GSC drug resistance and proposed ABCA1 inhibition as a potential strategy for the treatment of TMZ-resistant GBM.
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Affiliation(s)
- Shao-Ming Wang
- Cellular Pathobiology Section, Integrative Neuroscience Research Branch, Intramural Research Program, National Institute on Drug Abuse, NIH/DHHS, Baltimore, MD, 21224, USA.,Graduate Institute of Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Wen-Chi Lin
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, Taiwan
| | - Hong-Yi Lin
- Ph.D. Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University and National Health Research Institutes, Zhunan, Taiwan
| | - Yen-Lin Chen
- Department of Pathology, Cardinal Tien Hospital, School of Medicine, College of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan
| | - Chiung-Yuan Ko
- Graduate Institute of Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan. .,Ph.D. Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University and National Health Research Institutes, Zhunan, Taiwan. .,TMU Research Center of Neuroscience, Taipei Medical University, Taipei, Taiwan. .,TMU Research Center of Cancer Translational Medicine, Taipei, Taiwan.
| | - Ju-Ming Wang
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, Taiwan. .,Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan. .,International Research Center for Wound Repair and Regeneration, National Cheng Kung University, Tainan, Taiwan. .,Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
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7
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Kuo CJ, Lee KH, Huang CC, Wang IF, Hsieh CCJ, Lin HC, Lee YC. Purα regulates the induction of Znf179 transcription during neuronal differentiation. Biochem Biophys Res Commun 2020; 533:1477-1483. [PMID: 33333713 DOI: 10.1016/j.bbrc.2020.10.047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 10/17/2020] [Indexed: 11/15/2022]
Abstract
Development of the mammalian central nervous system is an important process, which is accomplished through precise regulations of many different genes. Zinc finger protein 179 (Znf179) is one of the essential genes that plays a critical role in neuronal differentiation. In our previous study, Znf179 knockout mice displayed brain malformation and impaired brain functions. We have also previously shown that Znf179 involves in cell cycle regulation, but the regulatory mechanism of Znf179 expression is not yet fully characterized. Herein, we identified that Purα is an essential factor for the promotor activity of Znf179. We also showed concurrent expression of Znf179 and Purα during neuronal differentiation. We also found that overexpression of Purα increased Znf179 expression in neuronal differentiated P19 cells. Through its direct binding to Znf179, as shown using DAPA, Purα upregulates Znf179 expression, suggesting that Purα is important for the regulation of Znf179 expression during neuronal differentiation. Our data indicated that Purα is involved in the transcriptional regulation of Znf179 gene during neuronal differentiation, and is indispensable during the brain development.
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Affiliation(s)
- Chu-Jen Kuo
- Health Management Center, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan; Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University and National Health Research Institutes, Taipei, Taiwan
| | - Kuen-Haur Lee
- Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Chi-Chen Huang
- PhD Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan; Research Center of Neuroscience, Taipei Medical University, Taipei, Taiwan
| | - I-Fang Wang
- Department of Pharmacology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Christine Chin-Jung Hsieh
- Taiwan International Graduate Program in Interdisciplinary Neuroscience, National Yang-Ming University and Academia Sinica, Taipei, Taiwan; Department of Biomedical Engineering, National Yang-Ming University, Taipei, Taiwan
| | - Hsin-Chuan Lin
- PhD Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan; Research Center of Neuroscience, Taipei Medical University, Taipei, Taiwan.
| | - Yi-Chao Lee
- PhD Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan; Research Center of Neuroscience, Taipei Medical University, Taipei, Taiwan.
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8
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Guo Y, Yu H. Leukocyte Telomere Length Shortening and Alzheimer's Disease Etiology. J Alzheimers Dis 2020; 69:881-885. [PMID: 31156167 DOI: 10.3233/jad-190134] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Several observational studies have found leukocyte telomere length (TL) to be associated with Alzheimer's diseases (AD) or dementia. However, these findings were based on small sample sizes and cannot clarify whether this relationship was causal. Genome-wide association studies (GWAS) have identified common variants associated with TL, providing a valuable resource for examining the causal effect of TL on AD using Mendelian Randomization (MR) methods. OBJECTIVE To examine if TL was causally associated with AD using GWAS summary statistics. METHODS Using a genetic risk score comprised of seven variants associated with leukocyte TL as an instrumental variable, we tested whether shorter TL was associated with a higher risk of AD by applying an MR approach to the summarized genome-wide association study data. RESULTS The genetic risk score for TL was associated with higher risk of AD [log-odds ratio (OR) = 0.003 for per TL-decreasing allele; 95% confidence interval (CI): 0.001, 0.005, p = 0.005]. Moreover, the MR analysis provided support for shorter TL to be causally associated with a higher risk of AD (log-OR = 0.04 per SD-decrease of TL; 95% CI: 0.01, 0.08, p = 0.01). CONCLUSION We suggest that TL has a causal effect on the risk of AD.
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Affiliation(s)
- Yanfang Guo
- Bao'An Hospital for Chronic Disease Prevention and Control, Shenzhen, Guangdong, China
| | - Haining Yu
- Department of Research, Shandong Cancer Hospital affiliated to Shandong University, Jinan, Shandong, China.,Shandong Academy of Medical Sciences, Jinan, Shandong, China
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9
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Wang D, Ruan X, Liu X, Xue Y, Shao L, Yang C, Zhu L, Yang Y, Li Z, Yu B, Feng T, Liu Y. SUMOylation of PUM2 promotes the vasculogenic mimicry of glioma cells via regulating CEBPD. Clin Transl Med 2020; 10:e168. [PMID: 32997416 PMCID: PMC7507322 DOI: 10.1002/ctm2.168] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/30/2020] [Accepted: 08/20/2020] [Indexed: 02/05/2023] Open
Abstract
Glioma is the most common form of primary central nervous malignant tumors. Vasculogenic mimicry (VM) is a blood supply channel that is different from endothelial blood vessels in glioma. VM is related to tumor invasion and metastasis. Therefore, it plays an important role to target therapy for glioma VM. Our experimental results showed abnormal expression of UBE2I, PUM2, CEBPD, and DSG2 in glioma cells. The Co-IP and Immunofluorescence staining were used to detect that PUM2 can be modified by SUMO2/3. The interaction between PUM2 and CEBPD mRNA was detected by the RIP assays. The interaction between transcription factor CEBPD and promoter region of DSG2 was detected by the ChIP assays and luciferase assays. The capacity for migration in glioma cells was observed by the laser holographic microscope. The capacity for invasion in glioma cells was detected by Transwell method. The VM in glioma cells was detected by three-dimensional cell culture method. The experimental results found that the upregulation of UBE2I in glioma tissues and cells promotes the SUMOylation of PUM2, which decreases not only the stability of PUM2 protein but also decreases the inhibitory effect of PUM2 on CEBPD mRNA. The upregulation of CEBPD promotes the binding to the upstream promoter region of DSG2 gene, further upregulates the expression of DSG2, and finally promotes the development of glioma VM. In conclusion, this study found that the UBE2I/PUM2/CEBPD/DSG2 played crucial roles in regulating glioma VM. It also provides potential targets and alternative strategies for combined treatment of glioma.
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Affiliation(s)
- Di Wang
- Department of NeurosurgeryShengjing Hospital of China Medical UniversityShenyangChina
- Liaoning Clinical Medical Research Center in Nervous System DiseaseShenyangChina
- Key Laboratory of Neuro‐oncology in Liaoning ProvinceShenyangChina
| | - Xuelei Ruan
- Department of Neurobiology, School of life SciencesChina Medical UniversityShenyangChina
- Key Laboratory of Cell Biology, Ministry of Public Health of ChinaChina Medical UniversityShenyangChina
- Key Laboratory of Medical Cell Biology, Ministry of Education of ChinaChina Medical UniversityShenyangChina
| | - Xiaobai Liu
- Department of NeurosurgeryShengjing Hospital of China Medical UniversityShenyangChina
- Liaoning Clinical Medical Research Center in Nervous System DiseaseShenyangChina
- Key Laboratory of Neuro‐oncology in Liaoning ProvinceShenyangChina
| | - Yixue Xue
- Department of Neurobiology, School of life SciencesChina Medical UniversityShenyangChina
- Key Laboratory of Cell Biology, Ministry of Public Health of ChinaChina Medical UniversityShenyangChina
- Key Laboratory of Medical Cell Biology, Ministry of Education of ChinaChina Medical UniversityShenyangChina
| | - Lianqi Shao
- Department of Neurobiology, School of life SciencesChina Medical UniversityShenyangChina
- Key Laboratory of Cell Biology, Ministry of Public Health of ChinaChina Medical UniversityShenyangChina
- Key Laboratory of Medical Cell Biology, Ministry of Education of ChinaChina Medical UniversityShenyangChina
| | - Chunqing Yang
- Department of NeurosurgeryShengjing Hospital of China Medical UniversityShenyangChina
- Liaoning Clinical Medical Research Center in Nervous System DiseaseShenyangChina
- Key Laboratory of Neuro‐oncology in Liaoning ProvinceShenyangChina
| | - Lu Zhu
- Department of Neurobiology, School of life SciencesChina Medical UniversityShenyangChina
- Key Laboratory of Cell Biology, Ministry of Public Health of ChinaChina Medical UniversityShenyangChina
- Key Laboratory of Medical Cell Biology, Ministry of Education of ChinaChina Medical UniversityShenyangChina
| | - Yang Yang
- Department of NeurosurgeryShengjing Hospital of China Medical UniversityShenyangChina
- Liaoning Clinical Medical Research Center in Nervous System DiseaseShenyangChina
- Key Laboratory of Neuro‐oncology in Liaoning ProvinceShenyangChina
| | - Zhen Li
- Department of NeurosurgeryShengjing Hospital of China Medical UniversityShenyangChina
- Liaoning Clinical Medical Research Center in Nervous System DiseaseShenyangChina
- Key Laboratory of Neuro‐oncology in Liaoning ProvinceShenyangChina
| | - Bo Yu
- Department of NeurosurgeryShengjing Hospital of China Medical UniversityShenyangChina
- Liaoning Clinical Medical Research Center in Nervous System DiseaseShenyangChina
- Key Laboratory of Neuro‐oncology in Liaoning ProvinceShenyangChina
| | - Tianda Feng
- Department of NeurosurgeryShengjing Hospital of China Medical UniversityShenyangChina
- Liaoning Clinical Medical Research Center in Nervous System DiseaseShenyangChina
- Key Laboratory of Neuro‐oncology in Liaoning ProvinceShenyangChina
| | - Yunhui Liu
- Department of NeurosurgeryShengjing Hospital of China Medical UniversityShenyangChina
- Liaoning Clinical Medical Research Center in Nervous System DiseaseShenyangChina
- Key Laboratory of Neuro‐oncology in Liaoning ProvinceShenyangChina
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10
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Lu J, Lu L, Yu Y, Baranowski J, Claud EC. Maternal administration of probiotics promotes brain development and protects offspring's brain from postnatal inflammatory insults in C57/BL6J mice. Sci Rep 2020; 10:8178. [PMID: 32424168 PMCID: PMC7235088 DOI: 10.1038/s41598-020-65180-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 04/29/2020] [Indexed: 12/12/2022] Open
Abstract
Neonatal morbidities are associated with long term neurological deficits in life and have also been associated with dysbiosis. We tested whether optimizing the neonate's microbiome through maternal probiotic supplementation can improve offspring's neurodevelopmental outcomes. Maternal LB supplementation, carried out by giving Lactobacillus acidophilus and Bifidobacterium infantis (LB) to pregnant C57/BL6J mice daily from E16 to weaning, significantly suppressed postnatal peripheral proinflammatory insult-induced systemic inflammation and normalized compromised blood-brain barrier permeability and tight junction protein expression in the offspring at pre-weaned age. Maternal LB exposure also regulated markers associated with leukocyte transendothelial migration, extracellular matrix injury and neuroinflammation. The suppressed neuroinflammation by maternal LB supplementation was associated with reduced astrocyte/microglia activation and downregulation of the transcriptional regulators CEBPD and IκBα. Furthermore, maternal LB supplementation promoted neuronal and oligodendrocyte progenitor cell development. Our study demonstrates the efficacy of maternal LB supplementation in modulating systemic and central nervous system inflammation as well as promoting neural/oligodendrocyte progenitor development in the offspring. This evidence suggests that maternal probiotic supplementation may be a safe and effective strategy to improve neurological outcomes in the offspring.
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Affiliation(s)
- Jing Lu
- The University of Chicago, Pritzker School of Medicine, Department of Pediatrics, Chicago, IL, 60637, USA
| | - Lei Lu
- The University of Chicago, Pritzker School of Medicine, Department of Pediatrics, Chicago, IL, 60637, USA
| | - Yueyue Yu
- The University of Chicago, Pritzker School of Medicine, Department of Pediatrics, Chicago, IL, 60637, USA
| | - Jillian Baranowski
- The University of Chicago, Pritzker School of Medicine, Chicago, IL, 60637, USA
| | - Erika C Claud
- The University of Chicago, Pritzker School of Medicine, Department of Pediatrics, Chicago, IL, 60637, USA.
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11
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Romero A, Marco-Contelles J, Ramos E. Highlights of ASS234: a novel and promising therapeutic agent for Alzheimer's disease therapy. Neural Regen Res 2020; 15:30-35. [PMID: 31535639 PMCID: PMC6862399 DOI: 10.4103/1673-5374.262679] [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] [Indexed: 01/08/2023] Open
Abstract
There is no effective treatment to face Alzheimer’s disease complexity. Multitarget molecules are a good approach against the multiple physiopathological events associated with its development and progression. In this context, N-((5-(3-(1-benzylpiperidin-4-yl) propoxy)-1- methyl-1H-indol-2-yl)methyl)-N-methylprop-2-yn-1-amine (ASS234) has been tested achieving promising results. ASS234 has demonstrated to cross the blood-brain barrier in vivo, and a good in silico safety profile being less toxic than donepezil. Besides, ASS234 reversibly inhibits human acetyl- and butyryl-cholinesterase, and irreversibly inhibits human monoamine oxidase A and B. Moreover, this multitarget molecule has antioxidant and neuroprotective properties, and inhibits Αβ1–42 and Αβ1–40 self-aggregation. Inquiring about the mechanism of action, several signaling pathways related to Alzheimer’s disease had been explored showing that ASS234 induces the wingless-type MMTV integration site (Wnt) family and several members of the heat shock proteins family and moreover counteracts neuroinflammatory and oxidative stress-related genes promoting the induction of several key antioxidant genes. Finally, in vivo experiments with ASS234 in C57BL/6J mice displayed its ability to reduce amyloid plaque burden and gliosis in the cortex and hippocampus, ameliorating scopolamine-induced learning deficits. Here we gather the information regarding ASS234 evaluated so far, showing its ability to face different targets, necessary to counteract a neurodegenerative disease as complex as the Alzheimer’s disease.
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Affiliation(s)
- Alejandro Romero
- Department of Pharmacology & Toxicology, Faculty of Veterinary Medicine, Complutense University of Madrid, Madrid, Spain
| | - José Marco-Contelles
- Laboratory of Medicinal Chemistry, Institute of General Organic Chemistry (CSIC), Madrid, Spain
| | - Eva Ramos
- Department of Pharmacology & Toxicology, Faculty of Veterinary Medicine, Complutense University of Madrid, Madrid, Spain
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12
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Gao K, Wei C, Zhu J, Wang X, Chen G, Luo Y, Zhang D, Yue W, Yu H. Exploring the Causal Pathway From Telomere Length to Alzheimer's Disease: An Update Mendelian Randomization Study. Front Psychiatry 2019; 10:843. [PMID: 31803085 PMCID: PMC6873744 DOI: 10.3389/fpsyt.2019.00843] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 10/24/2019] [Indexed: 12/20/2022] Open
Abstract
Increasing evidence shows that telomere length shortening is associated with the risk for Alzheimer's disease (AD), pointing to a potential modifiable target for prevention. However, the causality of this association is still not clear. To investigate the causal relationship between telomere length and AD, we use two-sample Mendelian randomization (MR) to assess potential causal inference. We used summary-level data for telomere length (9,190 participants) and AD (71,880 cases and 383,378 controls). We performed two-sample MR analysis with single nucleotide polymorphisms previously identified to be associated with telomere length. The MR analyses were conducted using the inverse-variance-weighted method and complemented with the maximum likelihood, weighted median, weighted mode approaches. MR evidence suggested that shorter telomere length was causally associated with a higher risk for AD (inverse-variance weighted estimate of odds ratio (OR): 1.03 per SD decrease of telomere length, P=1.21×10-2). The maximum likelihood, weighted median, weighted mode yielded a similar pattern of effects. The results were similar in sensitivity analyses. Using genetic instruments identified from large-scale genome-wide association study, robust evidence supports a causal role of telomere length shortening with increased risk of AD.
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Affiliation(s)
- Kai Gao
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China
- NHC Key Laboratory of Mental Health, National Clinical Research Center for Mental Disorders, Ministry of Health, Peking University Sixth Hospital (Institute of Mental Health), Peking University, Beijing, China
| | - Chen Wei
- Department of Psychiatry, Jining Psychiatric Hospital, Jining, China
| | - Jin Zhu
- Department of Psychiatry, Jining Medical University, Jining, China
| | - Xin Wang
- Department of Psychiatry, Jining Medical University, Jining, China
| | - Guoqing Chen
- Department of Psychiatry, Jining Medical University, Jining, China
| | - Yangyang Luo
- Department of Psychiatry, Jining Medical University, Jining, China
| | - Dai Zhang
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China
- NHC Key Laboratory of Mental Health, National Clinical Research Center for Mental Disorders, Ministry of Health, Peking University Sixth Hospital (Institute of Mental Health), Peking University, Beijing, China
- PKU-IDG/McGovern Institute for Brain Research, Peking University, Beijing, China
| | - Weihua Yue
- NHC Key Laboratory of Mental Health, National Clinical Research Center for Mental Disorders, Ministry of Health, Peking University Sixth Hospital (Institute of Mental Health), Peking University, Beijing, China
| | - Hao Yu
- Department of Psychiatry, Jining Medical University, Jining, China
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Erickson EK, Blednov YA, Harris RA, Mayfield RD. Glial gene networks associated with alcohol dependence. Sci Rep 2019; 9:10949. [PMID: 31358844 PMCID: PMC6662804 DOI: 10.1038/s41598-019-47454-4] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 07/17/2019] [Indexed: 02/07/2023] Open
Abstract
Chronic alcohol abuse alters the molecular structure and function of brain cells. Recent work suggests adaptations made by glial cells, such as astrocytes and microglia, regulate physiological and behavioral changes associated with addiction. Defining how alcohol dependence alters the transcriptome of different cell types is critical for developing the mechanistic hypotheses necessary for a nuanced understanding of cellular signaling in the alcohol-dependent brain. We performed RNA-sequencing on total homogenate and glial cell populations isolated from mouse prefrontal cortex (PFC) following chronic intermittent ethanol vapor exposure (CIE). Compared with total homogenate, we observed unique and robust gene expression changes in astrocytes and microglia in response to CIE. Gene co-expression network analysis revealed biological pathways and hub genes associated with CIE in astrocytes and microglia that may regulate alcohol-dependent phenotypes. Astrocyte identity and synaptic calcium signaling genes were enriched in alcohol-associated astrocyte networks, while TGF-β signaling and inflammatory response genes were disrupted by CIE treatment in microglia gene networks. Genes related to innate immune signaling, specifically interferon pathways, were consistently up-regulated across CIE-exposed astrocytes, microglia, and total homogenate PFC tissue. This study illuminates the cell-specific effects of chronic alcohol exposure and provides novel molecular targets for studying alcohol dependence.
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Affiliation(s)
- Emma K Erickson
- Waggoner Center for Alcohol and Addiction Research, The University of Texas at Austin, Austin, TX, 78712-01095, USA.
| | - Yuri A Blednov
- Waggoner Center for Alcohol and Addiction Research, The University of Texas at Austin, Austin, TX, 78712-01095, USA
| | - R Adron Harris
- Waggoner Center for Alcohol and Addiction Research, The University of Texas at Austin, Austin, TX, 78712-01095, USA
| | - R Dayne Mayfield
- Waggoner Center for Alcohol and Addiction Research, The University of Texas at Austin, Austin, TX, 78712-01095, USA
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14
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Wang SM, Lin HY, Chen YL, Hsu TI, Chuang JY, Kao TJ, Ko CY. CCAAT/enhancer-binding protein delta regulates the stemness of glioma stem-like cells through activating PDGFA expression upon inflammatory stimulation. J Neuroinflammation 2019; 16:146. [PMID: 31300060 PMCID: PMC6626372 DOI: 10.1186/s12974-019-1535-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 07/01/2019] [Indexed: 12/20/2022] Open
Abstract
Background The small population of glioma stem-like cells (GSCs) contributes to tumor initiation, malignancy, and recurrence in glioblastoma. However, the maintenance of GSC properties in the tumor microenvironment remains unclear. In glioma, non-neoplastic cells create an inflammatory environment and subsequently mediate tumor progression and maintenance. Transcriptional factor CCAAT/enhancer-binding protein delta (CEBPD) is suggested to regulate various genes responsive to inflammatory cytokines, thus prompting us to investigate its role in regulating GSCs stemness after inflammatory stimulation. Methods Stemness properties were analyzed by using spheroid formation. Oncomine and TCGA bioinformatic databases were used to analyze gene expression. Western blotting, quantitative real-time polymerase chain reaction, luciferase reporter assay, and chromatin immunoprecipitation assay were used to analyze proteins and gene transcript levels. The glioma tissue microarrays were used for CEBPD and PDGFA expression by immunohistochemistry staining. Results We first found that IL-1β promotes glioma spheroid formation and is associated with elevated CEBPD expression. Using microarray analysis, platelet-derived growth factor subunit A (PDGFA) was confirmed as a CEBPD-regulated gene that mediates IL-1β-enhanced GSCs self-renewal. Further analysis of the genomic database and tissue array revealed that the expression levels between CEBPD and PDGFA were coincident in glioma patient samples. Conclusion This is the first report showing the activation of PDGFA expression by CEBPD through IL-1β treatment and a novel CEBPD function in maintaining the self-renewal feature of GSCs. Electronic supplementary material The online version of this article (10.1186/s12974-019-1535-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Shao-Ming Wang
- Graduate Institute of Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Hong-Yi Lin
- Ph.D. Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University and National Health Research Institutes, Taipei, Taiwan
| | - Yen-Lin Chen
- Department of Pathology, Cardinal Tien Hospital, School of Medicine College of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan
| | - Tsung-I Hsu
- Graduate Institute of Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan.,Research Center of Neuroscience, Taipei Medical University, Taipei, Taiwan.,TMU Research Center of Cancer Translational Medicine, Taipei, Taiwan
| | - Jian-Ying Chuang
- Graduate Institute of Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan.,TMU Research Center of Cancer Translational Medicine, Taipei, Taiwan
| | - Tzu-Jen Kao
- Graduate Institute of Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Chiung-Yuan Ko
- Graduate Institute of Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan. .,TMU Research Center of Cancer Translational Medicine, Taipei, Taiwan.
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15
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Genetic labeling reveals temporal and spatial expression pattern of D2 dopamine receptor in rat forebrain. Brain Struct Funct 2019; 224:1035-1049. [PMID: 30604007 PMCID: PMC6499762 DOI: 10.1007/s00429-018-01824-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 12/20/2018] [Indexed: 01/11/2023]
Abstract
The D2 dopamine receptor (Drd2) is implicated in several brain disorders such as schizophrenia, Parkinson’s disease, and drug addiction. Drd2 is also the primary target of both antipsychotics and Parkinson’s disease medications. Although the expression pattern of Drd2 is relatively well known in mouse brain, the temporal and spatial distribution of Drd2 is lesser clear in rat brain due to the lack of Drd2 reporter rat lines. Here, we used CRISPR/Cas9 techniques to generate two knockin rat lines: Drd2::Cre and Rosa26::loxp-stop-loxp-tdTomato. By crossing these two lines, we produced Drd2 reporter rats expressing the fluorescence protein tdTomato under the control of the endogenous Drd2 promoter. Using fluorescence imaging and unbiased stereology, we revealed the cellular expression pattern of Drd2 in adult and postnatal rat forebrain. Strikingly, the Drd2 expression pattern differs between Drd2 reporter rats and Drd2 reporter mice generated by BAC transgene in prefrontal cortex and hippocampus. These results provide fundamental information needed for the study of Drd2 function in rat forebrain. The Drd2::Cre rats generated here may represent a useful tool to study the function of neuronal populations expressing Drd2.
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16
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Barman S, Srinivasan K. Zinc Supplementation Ameliorates Diabetic Cataract Through Modulation of Crystallin Proteins and Polyol Pathway in Experimental Rats. Biol Trace Elem Res 2019; 187:212-223. [PMID: 29756175 DOI: 10.1007/s12011-018-1373-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 05/02/2018] [Indexed: 11/30/2022]
Abstract
Non-enzymatic glycation of lens proteins and elevated polyol pathway in the eye lens have been the characteristic features of a diabetic condition. We have previously reported the benefits of zinc supplementation in reducing hyperglycemia and associated metabolic abnormalities and oxidative stress in diabetic rats. The current study explored whether zinc supplementation protects against cataractogenesis through modulation of glycation of lens proteins, elevated polyol pathway, oxidative stress, and proportion of different heat shock proteins in the eye lens of diabetic rats. Streptozotocin-induced diabetic rats were fed with a zinc-enriched diet (5 and 10 times of normal) for 6 weeks. Supplemental zinc alleviated the progression and maturation of diabetes-induced cataract. Zinc was also effective in preventing the reduced content of total and imbalanced proportion of soluble proteins in the lens. Supplemental zinc also alleviated cross-linked glycation and concomitant expression of the receptor of glycated products and oxidative stress indicators in the eye lens. Zinc supplementation further induced the concentration of heat shock protein in the eye lens of diabetic rats, specifically α-crystallin. Zinc supplementation counteracted the elevated activity and expression of polyol pathway enzymes and molecules in the lens. The results of this animal study endorsed the advantage of zinc supplementation in exerting the antiglycating influence and downregulating polyol pathway enzymes to defer cataractogenesis in diabetic rats.
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Affiliation(s)
- Susmita Barman
- Department of Biochemistry, CSIR - Central Food Technological Research Institute, Mysore, 570 020, India
| | - Krishnapura Srinivasan
- Department of Biochemistry, CSIR - Central Food Technological Research Institute, Mysore, 570 020, India.
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17
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Zhang F, Zhang C. Rnf112 deletion protects brain against intracerebral hemorrhage (ICH) in mice by inhibiting TLR-4/NF-κB pathway. Biochem Biophys Res Commun 2018; 507:43-50. [PMID: 30454900 DOI: 10.1016/j.bbrc.2018.10.141] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 10/23/2018] [Indexed: 12/14/2022]
Abstract
Intracerebral hemorrhage (ICH) is reported as a common and often fatal type of stroke accompanied with high morbidity and mortality, and it frequently results in long-lasting neurological dysfunctions. However, the pathogenesis that contributes to ICH has not been fully understood. Rnf112, also known as Znf179, is a member of the RING finger protein family. The expression of Rnf112 is abundant in the brain and is modulated during brain progression and development. The study aimed to explore the role of Rnf112 in brain injury after ICH, as well as the underlying molecular mechanisms. The results indicated that ICH led to a significant decrease in Rnf112, which was confirmed in oxyhemoglobin (oxyHb)-incubated astrocytes and microglial cells. Moreover, the Rnf112 knockout (Rnf112-/-) mice and wild type (WT) mice induced by ICH were further employed. Compared to the WT/ICH group, Rnf112-/- mice exhibited accelerated brain injury, as evidenced by the increased brain water contents and neurological deficit scores (NDS). In comparison to WT/ICH group, a remarkable up-regulation in the release of pro-inflammatory cytokines, including tumor necrotic factor-α (TNF-α), interleukin-6 (IL-6), and IL-1β, was observed in perihematoma tissues of Rnf112-/- mice on day 3 post-ICH. The process was along with promoted glial fibrillary acidic protein (GFAP) and Iba1 expression and reduced NeuN levels. Furthermore, ICH-induced increases in toll-like receptor (TLR)-4 and myeloid differentiation primary response protein (MyD88) expression were exacerbated by the loss of Rnf112. The phosphorylated expression of IKKα, inhibitor of NF-κB (IκBα) and nuclear factor-kappa B (NF-κB) induced by ICH in perihematoma tissues of mice was markedly enhanced in Rnf112-/- mice. Rnf112 repression-induced inflammatory response was verified in lipopolysaccharide (LPS)-incubated glial cells. In contrast, over-expressing Rnf112 markedly attenuated ICH-induced brain injury by restraining inflammation via inactivating TLR-4/NF-κB pathway. In summary, our findings suggested that Rnf112 expression was highly involved in the progression of ICH, and targeting Rnf112 signaling might be a promising therapeutic strategy against ICH development.
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Affiliation(s)
- Fan Zhang
- Department of Internal Neurology, No.215 Hospital of Shaanxi Nuclear Industry, Xianyang 712000, China
| | - Chenhong Zhang
- Department of Internal Neurology, No.215 Hospital of Shaanxi Nuclear Industry, Xianyang 712000, China.
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18
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Wu CC, Lee PT, Kao TJ, Chou SY, Su RY, Lee YC, Yeh SH, Liou JP, Hsu TI, Su TP, Chuang CK, Chang WC, Chuang JY. Upregulation of Znf179 acetylation by SAHA protects cells against oxidative stress. Redox Biol 2018; 19:74-80. [PMID: 30121389 PMCID: PMC6095945 DOI: 10.1016/j.redox.2018.08.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 08/01/2018] [Accepted: 08/03/2018] [Indexed: 12/14/2022] Open
Abstract
The accumulation of reactive oxygen species (ROS) commonly occurs during normal aging and during some acute/chronic progressive disorders. In order to avoid oxidative damage, scavenging of these radicals is important. Previously, we identified zinc finger protein 179 (Znf179) as a neuroprotector that increases antioxidant enzymes against superoxide radicals. However, the molecular mechanisms involved in the activation and regulation of Znf179 remain unresolved. Here, by performing sequence alignment, bioinformatics analysis, immunoprecipitation using two specific acetyl-lysine antibodies, and treatment with the histone deacetylase (HDAC) inhibitor SAHA, we determined the lysine-specific acetylation of Znf179. Furthermore, we investigated Znf179 interaction with HDACs and revealed that peroxide insult induced a dissociation of Znf179-HDAC1/HDAC6, causing an increase in Znf179 acetylation. Importantly, HDAC inhibition by SAHA further prompted Znf179 hyperacetylation, which promoted Znf179 to form a transcriptional complex with Sp1 and increased antioxidant gene expression against oxidative attack. In summary, the results obtained in this study showed that Znf179 was regulated by HDACs and that Znf179 acetylation was a critical mechanism in the induction of antioxidant defense systems. Additionally, HDAC inhibitors may have therapeutic potential for induction of Znf179 acetylation, strengthening the Znf179 protective functions against neurodegenerative processes.
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Affiliation(s)
- Chung-Che Wu
- Division of Neurosurgery, Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taiwan; Division of Neurosurgery, Department of Surgery, Taipei Medical University Hospital, Taiwan
| | - Pin-Tse Lee
- Cellular Pathobiology Section, Intramural Research Program, National Institute on Drug Abuse, USA
| | - Tzu-Jen Kao
- The Ph.D. Program for Neural Regenerative Medicine, Taipei Medical University, 250 Wuxing Street, Taipei 11031, Taiwan
| | - Szu-Yi Chou
- The Ph.D. Program for Neural Regenerative Medicine, Taipei Medical University, 250 Wuxing Street, Taipei 11031, Taiwan
| | - Ruei-Yuan Su
- Graduate Institute of Medical Science, Taipei Medical University, 250 Wuxing Street, Taipei 11031, Taiwan
| | - Yi-Chao Lee
- The Ph.D. Program for Neural Regenerative Medicine, Taipei Medical University, 250 Wuxing Street, Taipei 11031, Taiwan
| | - Shiu-Hwa Yeh
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Taiwan
| | | | - Tsung-I Hsu
- Center for Neurotrauma and Neuroregeneration, Taipei Medical University, Taiwan
| | - Tsung-Ping Su
- Cellular Pathobiology Section, Intramural Research Program, National Institute on Drug Abuse, USA
| | - Cheng-Keng Chuang
- Division of Urology, Department of Surgery, Chang Gung Memorial Hospital, Chang Gung University, Taiwan
| | - Wen-Chang Chang
- Graduate Institute of Medical Science, Taipei Medical University, 250 Wuxing Street, Taipei 11031, Taiwan.
| | - Jian-Ying Chuang
- The Ph.D. Program for Neural Regenerative Medicine, Taipei Medical University, 250 Wuxing Street, Taipei 11031, Taiwan; School of Pharmacy, Taipei Medical University, Taiwan.
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Akila Parvathy Dharshini S, Taguchi YH, Michael Gromiha M. Exploring the selective vulnerability in Alzheimer disease using tissue specific variant analysis. Genomics 2018; 111:936-949. [PMID: 29879491 DOI: 10.1016/j.ygeno.2018.05.024] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Revised: 05/03/2018] [Accepted: 05/30/2018] [Indexed: 02/08/2023]
Abstract
The selective vulnerability of distinct regions of the brain is a critical factor in neurodegenerative disorders. In Alzheimer's disease (AD), neurons in hippocampus situated in medial temporal lobe are immensely damaged. Identifying tissue-specific variants is essential in order to perceive the selective vulnerability in AD. In current work, we aligned mRNA-seq data with HG19/HG38 genomic assembly and identified specific variations present in temporal, frontal and other lobes of the AD using sequence alignment map tools. We compared the results with the genome-wide association and gene expression quantitative trait loci studies of the various neurological disorders. We also distinguished variants and epitranscriptomic modifications through the RNA-modification database and evaluated the variant effect in the coding/UTR regions. In addition, we developed genetic and functional interaction networks to understand the relationship between predicted vulnerable variations and differentially expressed genes. We found that genes involved in gliogenesis, intermediate filament organization are altered in the temporal lobe. Oxidative phosphorylation, and calcium ion homeostasis are modified in the frontal lobe, and protein degradation, apoptotic signaling are altered in other lobes. From this study, we propose that disruption of glial cell structural integrity, defective gliogenesis, and failure in glia-neuron communication are the primary factors for selective vulnerability.
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Affiliation(s)
- S Akila Parvathy Dharshini
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai 600036, Tamilnadu, India
| | - Y-H Taguchi
- Department of Physics, Chuo University, Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
| | - M Michael Gromiha
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai 600036, Tamilnadu, India; Advanced Computational Drug Discovery Unit (ACDD), Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsutacho, Midori-ku, Yokohama, Kanagawa 226-8501, Japan.
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20
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Wang SM, Lim SW, Wang YH, Lin HY, Lai MD, Ko CY, Wang JM. Astrocytic CCAAT/Enhancer-binding protein delta contributes to reactive oxygen species formation in neuroinflammation. Redox Biol 2018; 16:104-112. [PMID: 29499563 PMCID: PMC5953220 DOI: 10.1016/j.redox.2018.02.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 02/08/2018] [Accepted: 02/13/2018] [Indexed: 12/31/2022] Open
Abstract
Excessive reactive oxygen species (ROS) can form an oxidative stress and an associated neuroinflammation. However, the contribution of astrocytes to ROS formation, the cause of the resistance of astrocytes to oxidative stress, and the consequences on neurons remain largely uninvestigated. The transcription factor CCAAT/enhancer-binding protein delta (CEBPD) is highly expressed in astrocytes and has been suggested to contribute to the progress of Alzheimer's disease (AD). In this study, we found that ROS formation and expression of p47phox and p67phox, subunits of NADPH oxidase, were increased in AppTg mice but attenuated in AppTg/Cebpd-/- mice. Cebpd can up-regulate p47phox and p67phox transcription via a direct binding on their promoters, which results in an increase in intracellular oxidative stress. In addition, Cebpd also up-regulated Cu/Zn superoxide dismutase (Sod1) in astrocytes. Inactivation of Sod1 increased the sensitization to oxidative stress, which provides a reason for the resistance of astrocytes in an oxidative stress environment. Taken together, the study first revealed and dissected the involvement of astrocytic Cebpd in the promotion of oxidative stress and the contribution of CEBPD to the resistance of astrocytes in an oxidative stress environment.
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Affiliation(s)
- Shao-Ming Wang
- Institute of Basic Medical Sciences, College of Medicine, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan 701, Taiwan; Center for Neurotrauma and Neuroregeneration, College of Medical Science and Technology, Taipei Medical University, Taipei 110, Taiwan; The Ph.D. Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei 110, Taiwan
| | - Sher-Wei Lim
- Institute of Biomedical Sciences, National Sun Yat-sen University, Kaohsiung 804, Taiwan; Departments of Neurosurgery, Chi-Mei Medical Center, Tainan 722, Taiwan; Department of Nursing, Min-Hwei College of Health Care Management, Tainan 736, Taiwan
| | - Ya-Han Wang
- Department of Life Science, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan 701, Taiwan
| | - Hong-Yi Lin
- The Ph.D. Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei 110, Taiwan
| | - Ming-Derg Lai
- Institute of Basic Medical Sciences, College of Medicine, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan 701, Taiwan
| | - Chiung-Yuan Ko
- Center for Neurotrauma and Neuroregeneration, College of Medical Science and Technology, Taipei Medical University, Taipei 110, Taiwan; The Ph.D. Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei 110, Taiwan.
| | - Ju-Ming Wang
- Institute of Basic Medical Sciences, College of Medicine, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan 701, Taiwan; Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan 701, Taiwan; Graduate Institute of Medical Sciences, College of Medical Science and Technology, Taipei Medical University, Taipei 110, Taiwan; Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
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21
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Serrano MP, Herrero-Labrador R, Futch HS, Serrano J, Romero A, Fernandez AP, Samadi A, Unzeta M, Marco-Contelles J, Martínez-Murillo R. The proof-of-concept of ASS234: Peripherally administered ASS234 enters the central nervous system and reduces pathology in a male mouse model of Alzheimer disease. J Psychiatry Neurosci 2017; 42:59-69. [PMID: 27636528 PMCID: PMC5373713 DOI: 10.1503/jpn.150209] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND The heterogeneity of Alzheimer disease requires the development of multitarget drugs for treating the symptoms of the disease and its progression. Both cholinergic and monoamine oxidase dysfunctions are involved in the pathological process. Thus, we hypothesized that the development of therapies focused on these targets might be effective. We have developed and assessed a new product, coded ASS234, a multipotent acetyl and butyrylcholinesterase/monoamine oxidase A-B inhibitor with a potent inhibitory effect on amyloid-β aggregation as well as antioxidant and antiapoptotic properties. But there is a need to reliably correlate in vitro and in vivo drug release data. METHODS We examined the effect of ASS234 on cognition in healthy adult C57BL/6J mice in a model of scopolamine-induced cognitive impairment that often accompanies normal and pathological aging. Also, in a characterized transgenic APPswe/PS1ΔE9 mouse model of Alzheimer disease, we examined the effects of short-term ASS234 treatment on plaque deposition and gliosis using immunohistochemistry. Toxicology of ASS234 was assessed using a quantitative high-throughput in vitro cytotoxicity screening assay following the MTT assay method in HepG2 liver cells. RESULTS In vivo, ASS234 significantly decreased scopolamine-induced learning deficits in C57BL/6J mice. Also, reduction of amyloid plaque burden and gliosis in the cortex and hippocampus was assessed. In vitro, ASS234 exhibited lesser toxicity than donepezil and tacrine. LIMITATIONS The study was conducted in male mice only. Although the Alzheimer disease model does not recapitulate all features of the human disease, it exhibits progressive monoaminergic neurodegeneration. CONCLUSION ASS234 is a promising alternative drug of choice to treat the cognitive decline and neurodegeneration underlying Alzheimer disease.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Ricardo Martínez-Murillo
- Correspondence to: R. Martinez-Murillo, Department of Translational Neurobiology, Neurovascular Research Group, Cajal Institute (CSIC), Avenida Doctor Arce 37, 28002-Madrid, Spain;
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22
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Chuang JY, Kao TJ, Lin SH, Wu AC, Lee PT, Su TP, Yeh SH, Lee YC, Wu CC, Chang WC. Specificity protein 1-zinc finger protein 179 pathway is involved in the attenuation of oxidative stress following brain injury. Redox Biol 2016; 11:135-143. [PMID: 27918959 PMCID: PMC5144757 DOI: 10.1016/j.redox.2016.11.012] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Revised: 11/08/2016] [Accepted: 11/15/2016] [Indexed: 01/13/2023] Open
Abstract
After sudden traumatic brain injuries, secondary injuries may occur during the following days or weeks, which leads to the accumulation of reactive oxygen species (ROS). Since ROS exacerbate brain damage, it is important to protect neurons against their activity. Zinc finger protein 179 (Znf179) was shown to act as a neuroprotective factor, but the regulation of gene expression under oxidative stress remains unknown. In this study, we demonstrated an increase in Znf179 protein levels in both in vitro model of hydrogen peroxide (H2O2)-induced ROS accumulation and animal models of traumatic brain injury. Additionally, we examined the sub-cellular localization of Znf179, and demonstrated that oxidative stress increases Znf179 nuclear shuttling and its interaction with specificity protein 1 (Sp1). Subsequently, the positive autoregulation of Znf179 expression, which is Sp1-dependent, was further demonstrated using luciferase reporter assay and green fluorescent protein (GFP)-Znf179-expressing cells and transgenic mice. The upregulation of Sp1 transcriptional activity induced by the treatment with nerve growth factor (NGF) led to an increase in Znf179 levels, which further protected cells against H2O2-induced damage. However, Sp1 inhibitor, mithramycin A, was shown to inhibit NGF effects, leading to a decrease in Znf179 expression and lower cellular protection. In conclusion, the results obtained in this study show that Znf179 autoregulation through Sp1-dependent mechanism plays an important role in neuroprotection, and NGF-induced Sp1 signaling may help attenuate more extensive (ROS-induced) damage following brain injury. Znf179 levels increase in vitro after hydrogen peroxide treatment. Znf179 levels increase in vivo in traumatic brain injury mouse model. Oxidative stress increases Znf179 translocation to nucleus. Znf179 autoregulates its expression through Sp1-dependent mechanism. Sp1-Znf179 pathway plays an important role in neuroprotection.
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Affiliation(s)
- Jian-Ying Chuang
- Graduate Institute of Neural Regenerative Medicine, Taipei Medical University, Taipei 110, Taiwan; Center for Neurotrauma and Neuroregeneration, Taipei Medical University, Taipei 110, Taiwan.
| | - Tzu-Jen Kao
- Graduate Institute of Neural Regenerative Medicine, Taipei Medical University, Taipei 110, Taiwan; Center for Neurotrauma and Neuroregeneration, Taipei Medical University, Taipei 110, Taiwan.
| | - Shu-Hui Lin
- Graduate Institute of Neural Regenerative Medicine, Taipei Medical University, Taipei 110, Taiwan; Graduate Institute of Medical Science, Taipei Medical University, Taipei 110, Taiwan.
| | - An-Chih Wu
- Graduate Institute of Neural Regenerative Medicine, Taipei Medical University, Taipei 110, Taiwan; Graduate Institute of Medical Science, Taipei Medical University, Taipei 110, Taiwan.
| | - Pin-Tse Lee
- Cellular Pathobiology Section, Intramural Research Program, National Institute on Drug Abuse, Baltimore, MD 21224, USA.
| | - Tsung-Ping Su
- Cellular Pathobiology Section, Intramural Research Program, National Institute on Drug Abuse, Baltimore, MD 21224, USA.
| | - Shiu-Hwa Yeh
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli 350, Taiwan.
| | - Yi-Chao Lee
- Graduate Institute of Neural Regenerative Medicine, Taipei Medical University, Taipei 110, Taiwan; Center for Neurotrauma and Neuroregeneration, Taipei Medical University, Taipei 110, Taiwan.
| | - Chung-Che Wu
- Department of Neurosurgery, Taipei Medical University Hospital, Taipei Medical University, Taipei 110, Taiwan.
| | - Wen-Chang Chang
- Graduate Institute of Medical Science, Taipei Medical University, Taipei 110, Taiwan.
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23
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Wang WJ, Li CF, Chu YY, Wang YH, Hour TC, Yen CJ, Chang WC, Wang JM. Inhibition of the EGFR/STAT3/CEBPD Axis Reverses Cisplatin Cross-resistance with Paclitaxel in the Urothelial Carcinoma of the Urinary Bladder. Clin Cancer Res 2016; 23:503-513. [DOI: 10.1158/1078-0432.ccr-15-1169] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Revised: 06/28/2016] [Accepted: 07/02/2016] [Indexed: 11/16/2022]
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24
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Su TC, Lin SH, Lee PT, Yeh SH, Hsieh TH, Chou SY, Su TP, Hung JJ, Chang WC, Lee YC, Chuang JY. The sigma-1 receptor-zinc finger protein 179 pathway protects against hydrogen peroxide-induced cell injury. Neuropharmacology 2016; 105:1-9. [PMID: 26792191 PMCID: PMC5520630 DOI: 10.1016/j.neuropharm.2016.01.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 12/14/2015] [Accepted: 01/08/2016] [Indexed: 11/25/2022]
Abstract
The accumulation of reactive oxygen species (ROS) have implicated the pathogenesis of several human diseases including neurodegenerative disorders, stroke, and traumatic brain injury, hence protecting neurons against ROS is very important. In this study, we focused on sigma-1 receptor (Sig-1R), a chaperone at endoplasmic reticulum, and investigated its protective functions. Using hydrogen peroxide (H2O2)-induced ROS accumulation model, we verified that apoptosis-signaling pathways were elicited by H2O2 treatment. However, the Sig-1R agonists, dehydroepiandrosterone (DHEA) and DHEA sulfate (DHEAS), reduced the activation of apoptotic pathways significantly. By performing protein-protein interaction assays and shRNA knockdown of Sig-1R, we identified the brain Zinc finger protein 179 (Znf179) as a downstream target of Sig-1R regulation. The neuroprotective effect of Znf179 overexpression was similar to that of DHEAS treatment, and likely mediated by affecting the levels of antioxidant enzymes. We also quantified the levels of peroxiredoxin 3 (Prx3) and superoxide dismutase 2 (SOD2) in the hippocampi of wild-type and Znf179 knockout mice, and found both enzymes to be reduced in the knockout versus the wild-type mice. In summary, these results reveal that Znf179 plays a novel role in neuroprotection, and Sig-1R agonists may be therapeutic candidates to prevent ROS-induced damage in neurodegenerative and neurotraumatic diseases.
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Affiliation(s)
- Tzu-Chieh Su
- Graduate Institute of Medical Science, Taipei Medical University, Taiwan
| | - Shu-Hui Lin
- Graduate Institute of Medical Science, Taipei Medical University, Taiwan; Graduate Institute of Neural Regenerative Medicine, Taipei Medical University, Taiwan
| | - Pin-Tse Lee
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Taiwan; Cellular Pathobiology Section, Intramural Research Program, National Institute on Drug Abuse, USA
| | - Shiu-Hwa Yeh
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Taiwan
| | - Tsung-Hsun Hsieh
- Graduate Institute of Neural Regenerative Medicine, Taipei Medical University, Taiwan
| | - Szu-Yi Chou
- Graduate Institute of Neural Regenerative Medicine, Taipei Medical University, Taiwan
| | - Tsung-Ping Su
- Cellular Pathobiology Section, Intramural Research Program, National Institute on Drug Abuse, USA
| | - Jan-Jong Hung
- Institute of Bioinformatics and Biosignal Transduction, National Cheng Kung University, Taiwan
| | - Wen-Chang Chang
- Graduate Institute of Medical Science, Taipei Medical University, Taiwan; Center for Neurotrauma and Neuroregeneration, Taipei Medical University, Taiwan
| | - Yi-Chao Lee
- Graduate Institute of Neural Regenerative Medicine, Taipei Medical University, Taiwan; Center for Neurotrauma and Neuroregeneration, Taipei Medical University, Taiwan.
| | - Jian-Ying Chuang
- Graduate Institute of Neural Regenerative Medicine, Taipei Medical University, Taiwan; Center for Neurotrauma and Neuroregeneration, Taipei Medical University, Taiwan.
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25
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Tsou JH, Yang YC, Pao PC, Lin HC, Huang NK, Lin ST, Hsu KS, Yeh CM, Lee KH, Kuo CJ, Yang DM, Lin JH, Chang WC, Lee YC. Important Roles of Ring Finger Protein 112 in Embryonic Vascular Development and Brain Functions. Mol Neurobiol 2016; 54:2286-2300. [PMID: 26951452 DOI: 10.1007/s12035-016-9812-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Accepted: 02/22/2016] [Indexed: 11/28/2022]
Abstract
Rnf112 is a member of the RING finger protein family. The expression of Rnf112 is abundant in the brain and is regulated during brain development. Our previous study has revealed that Rnf112 can promote neuronal differentiation by inhibiting the progression of the cell cycle in cell models. In this study, we further revealed the important functions of Rnf112 in embryo development and in adult brain. Our data showed that most of the Rnf112 -/- embryos exhibited blood vascular defects and died in utero. Upon further investigation, we found that the survival rate of homozygous Rnf112 knockout mice in 129/sv and C57BL/6 mixed genetic background was increased. The survived newborns of Rnf112 -/- mice manifested growth retardation as indicated by smaller size and a reduced weight. Although the overall organization of the brain did not appear to be severely affected in Rnf112 -/- mice, using in vivo 3D MRI imaging, we found that when compared to wild-type littermates, brains of Rnf112 -/- mice were smaller. In addition, Rnf112 -/- mice displayed impairment of brain functions including motor balance, and spatial learning and memory. Our results provide important aspects for the study of Rnf112 gene functions.
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Affiliation(s)
- Jen-Hui Tsou
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Ying-Chen Yang
- Department of Biotechnology and Animal Science, College of Bioresources, National Ilan University, Ilan, Taiwan
| | - Ping-Chieh Pao
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Hui-Ching Lin
- Department and Institute of Physiology, School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Brain Research Center, National Yang-Ming University, Taipei, Taiwan
| | - Nai-Kuei Huang
- National Research Institute of Chinese Medicine, Taipei, Taiwan.,Ph.D. Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, 11031, Taiwan
| | - Shih-Ting Lin
- Department of Pharmacology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Kuei-Sen Hsu
- Department of Pharmacology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Che-Ming Yeh
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Kuen-Haur Lee
- Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Chu-Jen Kuo
- Ph.D. Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, 11031, Taiwan.,Department of Radiology, Shin Kong Wu Ho-Su Memorial Hospital, School of Medicine, Fu Jen Catholic University, Taipei, Taiwan
| | - De-Ming Yang
- Department of Medical Research and Education, Taipei Veterans General Hospital, Taipei, Taiwan.,Institute of Biophotonics, School of Medical Technology and Engineering, National Yang-Ming University, Taipei, Taiwan
| | - Jiann-Her Lin
- Ph.D. Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, 11031, Taiwan
| | - Wen-Chang Chang
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yi-Chao Lee
- Ph.D. Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, 11031, Taiwan. .,Center for Neurotrauma and Neuroregeneration, Taipei Medical University, Taipei, Taiwan.
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26
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Astrogliosis: An integral player in the pathogenesis of Alzheimer's disease. Prog Neurobiol 2016; 144:121-41. [PMID: 26797041 DOI: 10.1016/j.pneurobio.2016.01.001] [Citation(s) in RCA: 186] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 11/10/2015] [Accepted: 01/10/2016] [Indexed: 12/15/2022]
Abstract
Alzheimer's disease is the main cause of dementia in the elderly and begins with a subtle decline in episodic memory followed by a more general decline in overall cognitive abilities. Though the exact trigger for this cascade of events remains unknown the presence of the misfolded amyloid-beta protein triggers reactive gliosis, a prominent neuropathological feature in the brains of Alzheimer's patients. The cytoskeletal and morphological changes of astrogliosis are its evident features, while changes in oxidative stress defense, cholesterol metabolism, and gene transcription programs are less manifest. However, these latter molecular changes may underlie a disruption in homeostatic regulation that keeps the brain environment balanced. Astrocytes in Alzheimer's disease show changes in glutamate and GABA signaling and recycling, potassium buffering, and in cholinergic, purinergic, and calcium signaling. Ultimately the dysregulation of homeostasis maintained by astrocytes can have grave consequences for the stability of microcircuits within key brain regions. Specifically, altered inhibition influenced by astrocytes can lead to local circuit imbalance with farther reaching consequences for the functioning of larger neuronal networks. Healthy astrocytes have a role in maintaining and modulating normal neuronal communication, synaptic physiology and energy metabolism, astrogliosis interferes with these functions. This review considers the molecular and functional changes occurring during astrogliosis in Alzheimer's disease, and proposes that astrocytes are key players in the development of dementia.
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27
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Mohn TC, Koob AO. Adult Astrogenesis and the Etiology of Cortical Neurodegeneration. J Exp Neurosci 2015; 9:25-34. [PMID: 26568684 PMCID: PMC4634839 DOI: 10.4137/jen.s25520] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Revised: 10/06/2015] [Accepted: 10/08/2015] [Indexed: 01/09/2023] Open
Abstract
As more evidence points to a clear role for astrocytes in synaptic processing, synaptogenesis and cognition, continuing research on astrocytic function could lead to strategies for neurodegenerative disease prevention. Reactive astrogliosis results in astrocyte proliferation early in injury and disease states and is considered neuroprotective, indicating a role for astrocytes in disease etiology. This review describes the different types of human cortical astrocytes and the current evidence regarding adult cortical astrogenesis in injury and degenerative disease. A role for disrupted astrogenesis as a cause of cortical degeneration, with a focus on the tauopathies and synucleinopathies, will also be considered.
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Affiliation(s)
- Tal C. Mohn
- Biology Department, University of Wisconsin—River Falls, River Falls, Wisconsin, USA
| | - Andrew O. Koob
- Biology Department, University of Wisconsin—River Falls, River Falls, Wisconsin, USA
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28
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Astrocytic CCAAT/Enhancer-Binding Protein Delta Contributes to Glial Scar Formation and Impairs Functional Recovery After Spinal Cord Injury. Mol Neurobiol 2015; 53:5912-5927. [PMID: 26510742 PMCID: PMC5085997 DOI: 10.1007/s12035-015-9486-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Accepted: 10/12/2015] [Indexed: 02/06/2023]
Abstract
After spinal cord injury, inflammatory reaction induces the aggregation of astrocytes to form a glial scar that eventually blocks axonal regeneration. Transcription factor CCAAT/enhancer-binding protein delta (C/EBPδ) is a regulatory protein of genes responsive to inflammatory factors, but its role in glial scar formation after spinal cord injury remains unknown. By using a model of moderate spinal cord contusion injury at the mid-thoracic level, we found that C/EBPδ was expressed mostly in the reactive astrocytes bordering the lesion in wild-type mice from 7 days after the injury. C/EBPδ-deficient mice showed reduced glial scar formation, more residual white matter, and better motor function recovery compared with wild-type mice 28 days after the injury. Upon interleukin (IL)-1β stimulation in vitro, the increased expression of C/EBPδ in reactive astrocytes inhibited RhoA expression and, subsequently, the ability of astrocyte migration. However, these reactive astrocytes also produced an increased amount of matrix metalloproteinase-3, which promoted the migration of non-IL-1β-treated, inactive astrocytes. Although the involvement of other non-astroglial C/EBPδ cannot be entirely excluded, our studies suggest that astrocytic C/EBPδ is integral to the inflammatory cascades leading to glial scar formation after spinal cord injury.
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29
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Lutzenberger M, Burwinkel M, Riemer C, Bode V, Baier M. Ablation of CCAAT/Enhancer-Binding Protein Delta (C/EBPD): Increased Plaque Burden in a Murine Alzheimer's Disease Model. PLoS One 2015; 10:e0134228. [PMID: 26230261 PMCID: PMC4521790 DOI: 10.1371/journal.pone.0134228] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2014] [Accepted: 07/07/2015] [Indexed: 11/18/2022] Open
Abstract
Alzheimer's disease (AD) and prion diseases carry a significant inflammatory component. The astrocytic overexpression of CCAAT/enhancer-binding protein delta (C/EBPD) in prion- and AD-affected brain tissue prompted us to study the role of this transcription factor in murine model systems of these diseases. Ablation of C/EBPD had neither in the AD model (APP/PS1double transgenic mice) nor in the prion model (scrapie-infected C57BL/6 mice) an influence on overt clinical symptoms. Moreover, the absence of C/EBPD did not affect the extent of the disease-related gliosis. However, C/EBPD-deficient APP/PS1 double transgenic mice displayed significantly increased amyloid beta (Abeta) plaque burdens while amyloid precursor protein (APP) expression and expression of genes involved in beta amyloid transport and turnover remained unchanged. Gene expression analysis in mixed glia cultures demonstrated a strong dependency of complement component C3 on the presence of C/EBPD. Accordingly, C3 mRNA levels were significantly lower in brain tissue of C/EBPD-deficient mice. Vice versa, C3 expression in U-373 MG cells increased upon transfection with a C/EBPD expression vector. Taken together, our data indicate that a C/EBPD-deficiency leads to increased Abeta plaque burden in AD model mice. Furthermore, as shown in vivo and in vitro, C/EBPD is an important driver of the expression of acute phase response genes like C3 in the amyloid-affected CNS.
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Affiliation(s)
- Manuel Lutzenberger
- Research Group Proteinopathies/Neurodegenerative Diseases, Centre for Biological Threats and Special Pathogens (ZBS6), Robert Koch-Institut, Berlin, Germany
| | - Michael Burwinkel
- Research Group Proteinopathies/Neurodegenerative Diseases, Centre for Biological Threats and Special Pathogens (ZBS6), Robert Koch-Institut, Berlin, Germany
- * E-mail:
| | - Constanze Riemer
- Research Group Proteinopathies/Neurodegenerative Diseases, Centre for Biological Threats and Special Pathogens (ZBS6), Robert Koch-Institut, Berlin, Germany
| | - Victoria Bode
- Research Group Proteinopathies/Neurodegenerative Diseases, Centre for Biological Threats and Special Pathogens (ZBS6), Robert Koch-Institut, Berlin, Germany
| | - Michael Baier
- Research Group Proteinopathies/Neurodegenerative Diseases, Centre for Biological Threats and Special Pathogens (ZBS6), Robert Koch-Institut, Berlin, Germany
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30
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Chu YY, Ko CY, Wang WJ, Wang SM, Gean PW, Kuo YM, Wang JM. Astrocytic CCAAT/Enhancer Binding Protein δ Regulates Neuronal Viability and Spatial Learning Ability via miR-135a. Mol Neurobiol 2015. [PMID: 26208701 PMCID: PMC4937099 DOI: 10.1007/s12035-015-9359-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The progression of Alzheimer’s disease (AD) has been associated with astrocytes-induced neuroinflammation. However, the detailed mechanism of astrocytes associated with learning impairments and neuronal loss in AD is poorly defined. Here, we provide novel evidences that astrocytic miR-135a is critical for neuronal viability and spatial learning ability in vivo. The AppTg/Cebpd−/− mice showed a spatial learning improvement compared with the APPswe/PS1/E9 bigenic (AppTg) mice. miR-135a was found to be a CCAAT/enhancer binding protein δ (CEBPD) responsive miRNA and can repress the transcription of thrombospondin 1 (THBS1) / Thbs1 (mouse) via its 3′-untranslated region (3′UTR). We used different experimental approaches to attenuate the expression of CEBPD/Cebpd (mouse) or miR-135a in astrocytes and found the following results: increase in THBS1/Thbs1 expression, decrease in neuronal apoptosis, and increase in growth of neurites. Importantly, injection of miR-135a antagonist (AM135a) into the brain of AppTg mice was found to prevent neuronal apoptosis and improved the spatial learning ability. Together, our findings demonstrate a critical function for the astrocytic CEBPD, and point to miR-135a antagonist as an attractive therapeutic target for the treatment of Alzheimer’s disease.
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Affiliation(s)
- Yu-Yi Chu
- Institute of Bioinformatics and Biosignal Transduction, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, 701, Taiwan
| | - Chiung-Yuan Ko
- Graduate Institute of Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, 110, Taiwan.,Center for Neurotrauma and Neuroregeneration, Taipei Medical University, Taipei, 110, Taiwan
| | - Wei-Jan Wang
- Institute of Basic Medical Sciences, National Cheng Kung University, Tainan, 701, Taiwan
| | - Shao-Ming Wang
- Institute of Basic Medical Sciences, National Cheng Kung University, Tainan, 701, Taiwan
| | - Po-Wu Gean
- Institute of Basic Medical Sciences, National Cheng Kung University, Tainan, 701, Taiwan.,Department of Pharmacology, National Cheng Kung University, Tainan, 701, Taiwan
| | - Yu-Min Kuo
- Institute of Basic Medical Sciences, National Cheng Kung University, Tainan, 701, Taiwan.,Department of Cell Biology and Anatomy, National Cheng Kung University, Tainan, 701, Taiwan
| | - Ju-Ming Wang
- Institute of Bioinformatics and Biosignal Transduction, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, 701, Taiwan. .,Institute of Basic Medical Sciences, National Cheng Kung University, Tainan, 701, Taiwan. .,Department of Cell Biology and Anatomy, National Cheng Kung University, Tainan, 701, Taiwan. .,Infectious Disease and Signaling Research Center, National Cheng Kung University, Tainan, 701, Taiwan. .,Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, 110, Taiwan.
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31
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Pulido-Salgado M, Vidal-Taboada JM, Saura J. C/EBPβ and C/EBPδ transcription factors: Basic biology and roles in the CNS. Prog Neurobiol 2015; 132:1-33. [PMID: 26143335 DOI: 10.1016/j.pneurobio.2015.06.003] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Revised: 05/08/2015] [Accepted: 06/16/2015] [Indexed: 02/01/2023]
Abstract
CCAAT/enhancer binding protein (C/EBP) β and C/EBPδ are transcription factors of the basic-leucine zipper class which share phylogenetic, structural and functional features. In this review we first describe in depth their basic molecular biology which includes fascinating aspects such as the regulated use of alternative initiation codons in the C/EBPβ mRNA. The physical interactions with multiple transcription factors which greatly opens the number of potentially regulated genes or the presence of at least five different types of post-translational modifications are also remarkable molecular mechanisms that modulate C/EBPβ and C/EBPδ function. In the second part, we review the present knowledge on the localization, expression changes and physiological roles of C/EBPβ and C/EBPδ in neurons, astrocytes and microglia. We conclude that C/EBPβ and C/EBPδ share two unique features related to their role in the CNS: whereas in neurons they participate in memory formation and synaptic plasticity, in glial cells they regulate the pro-inflammatory program. Because of their role in neuroinflammation, C/EBPβ and C/EBPδ in microglia are potential targets for treatment of neurodegenerative disorders. Any strategy to reduce C/EBPβ and C/EBPδ activity in neuroinflammation needs to take into account its potential side-effects in neurons. Therefore, cell-specific treatments will be required for the successful application of this strategy.
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Affiliation(s)
- Marta Pulido-Salgado
- Biochemistry and Molecular Biology Unit, School of Medicine, University of Barcelona, IDIBAPS, Casanova 143, planta 3, 08036 Barcelona, Spain
| | - Jose M Vidal-Taboada
- Biochemistry and Molecular Biology Unit, School of Medicine, University of Barcelona, IDIBAPS, Casanova 143, planta 3, 08036 Barcelona, Spain
| | - Josep Saura
- Biochemistry and Molecular Biology Unit, School of Medicine, University of Barcelona, IDIBAPS, Casanova 143, planta 3, 08036 Barcelona, Spain.
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32
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Ko CY, Chang WC, Wang JM. Biological roles of CCAAT/Enhancer-binding protein delta during inflammation. J Biomed Sci 2015; 22:6. [PMID: 25591788 PMCID: PMC4318212 DOI: 10.1186/s12929-014-0110-2] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Accepted: 12/25/2014] [Indexed: 01/13/2023] Open
Abstract
CCAAT/enhancer-binding protein delta (CEBPD) belongs to the CCAAT/enhancer-binding protein family, and these proteins function as transcription factors in many biological processes, including cell differentiation, motility, growth arrest, proliferation, cell death, metabolism and immune responses. The functional diversity of CEBPD depends, in part, on the cell type and cellular context, which indicates that CEBPD could interpret a variety of cues to adjust cellular responses in specific situations. Here, we review the regulation of the CEBPD gene and its function in response to inflammatory stimuli. We also address its effects in inflammation-related diseases through a discussion of its recently discovered downstream targets. Regarding to the previous discoveries and new insights in inflammation-associated diseases, suggesting CEBPD could also be a central gene in inflammation. Importantly, the results of this study indicate that the investigation of CEBPD could open a new avenue to help better understand the inflammatory response.
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Affiliation(s)
- Chiung-Yuan Ko
- Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, 11031, Taiwan. .,Center for Neurotrauma and Neuroregeneration, Taipei Medical University, Taipei, 11031, Taiwan.
| | - Wen-Chang Chang
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan.
| | - Ju-Ming Wang
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan. .,Institute of Bioinformatics and Biosignal Transduction, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, 70101, Taiwan. .,Infectious Disease and Signaling Research Center, National Cheng Kung University, Tainan, 70101, Taiwan. .,Center of Molecular Inflammation, National Cheng Kung University, Tainan, 70101, Taiwan.
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33
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Cui Z, Zhou L, Liu C, Zhu G, Wu X, Yan Y, Xia X, Ben Z, Song Y, Zhou Y, Zhang H, Zhang D. The role of Homer1b/c in neuronal apoptosis following LPS-induced neuroinflammation. Neurochem Res 2014; 40:204-15. [PMID: 25503822 DOI: 10.1007/s11064-014-1460-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2014] [Revised: 10/16/2014] [Accepted: 10/18/2014] [Indexed: 02/07/2023]
Abstract
Homer, also designated Vesl, is one member of the newly found postsynaptic density scaffold proteins, playing a vital role in maintaining synaptic integrity, regulating intracellular calcium mobilization, and being critical for the regulation of cellular apoptosis. However, its function in the inflamed central nervous system (CNS) is not fully elucidated. Here, we investigated the role of Homer1b/c, a long form of Homer1, in lipopolysaccharide (LPS) induced neuroinflammation in CNS. Western blot analysis indicated that LPS administration significantly increased the expression of Homer1b/c in rat brain. Moreover, double immunofluorescent staining suggested Homer1b/c was mainly distributed in the cytoplasm of neurons and had a close association with cleaved caspase-3 level in neurons in rat brain after LPS injection. In vitro studies indicated that up-regulation of Homer1b/c might be related to the subsequent apoptosis in neurons treated by conditioned media (CM), collected from LPS-stimulated mixed glial cultures (MGC). We also found down-regulation of Homer1b/c partly blocked the increase of cleaved caspase-3 and the proportion of Bax/Bcl-2 in neurons induced by MGC-CM. Taken together, these findings suggested that Homer1b/c might promote neuronal apoptosis via the Bax/Bcl-2 dependent pathway during neuroinflammation in CNS, and inhibiting Homer1b/c expression might provide a novel neuroprotective strategy against the inflammation-related neuronal apoptosis.
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Affiliation(s)
- Zhiming Cui
- Department of Orthopaedics, The Second Affiliated Hospital of Nantong University, Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University, Nantong, 226002, Jiangsu, People's Republic of China
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