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Kumar N, Sharma N, Khera R, Gupta R, Mehan S. Guggulsterone ameliorates ethidium bromide-induced experimental model of multiple sclerosis via restoration of behavioral, molecular, neurochemical and morphological alterations in rat brain. Metab Brain Dis 2021; 36:911-925. [PMID: 33635478 DOI: 10.1007/s11011-021-00691-x] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 02/11/2021] [Indexed: 11/30/2022]
Abstract
Multiple Sclerosis (MS) is a progressive neurodegenerative disease with clinical signs of neuroinflammation and the central nervous system's demyelination. Numerous studies have identified the role of the Janus kinase (JAK)/signal transducer and activator of transcription (STAT) overexpression and the low level of peroxisome proliferator-activated receptor-gamma (PPAR-γ) in MS pathogenesis. Guggulsterone (GST), an active component derived from 'Commiphora Mukul,' has been used to treat various diseases. Traditional uses indicate that GST is a suitable agent for anti-inflammatory action. Therefore, we assessed the therapeutic potential of GST (30 and 60 mg/kg) in ethidium bromide (EB) induced demyelination in experimental rats and investigated the molecular mechanism by modulating the JAK/STAT and PPAR-γ receptor signaling. Wistar rats were randomly divided into six groups (n = 6). EB (0.1%/10 μl) was injected selectively in the intracerebropeduncle (ICP) region for seven days to cause MS-like manifestations. The present study reveals that long-term administration of GST for 28 days has a neuroprotective effect by improving behavioral deficits (spatial cognition memory, grip, and motor coordination) associated with lower STAT-3 levels. While elevating PPAR-γ and myelin basic protein levels in rat brains are consistent with the functioning of both signaling pathways. Also, GST modulates the neurotransmitter level by increasing Ach, dopamine, serotonin and by reducing glutamate. Moreover, GST ameliorates inflammatory cytokines (TNF, IL-1β), and oxidative stress markers (AchE, SOD, catalase, MDA, GSH, nitrite). In addition, GST prevented apoptosis, as demonstrated by the reduction of caspase-3 and Bax. Simultaneously, Bcl-2 elevation and the restoration of gross morphology alterations are also recovered by long-term GST treatment. Therefore, it can be concluded that GST may be a potential alternative drug candidate for MS-related motor neuron dysfunctions.
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Affiliation(s)
- Nitish Kumar
- Neuropharmacology Division, Department of Pharmacology, ISF College of Pharmacy, Moga, Punjab, 142001, India
| | - Nidhi Sharma
- Neuropharmacology Division, Department of Pharmacology, ISF College of Pharmacy, Moga, Punjab, 142001, India
| | - Rishabh Khera
- Neuropharmacology Division, Department of Pharmacology, ISF College of Pharmacy, Moga, Punjab, 142001, India
| | - Ria Gupta
- Neuropharmacology Division, Department of Pharmacology, ISF College of Pharmacy, Moga, Punjab, 142001, India
| | - Sidharth Mehan
- Neuropharmacology Division, Department of Pharmacology, ISF College of Pharmacy, Moga, Punjab, 142001, India.
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Li M, Yu H. Identification of WP1066, an inhibitor of JAK2 and STAT3, as a K V 1.3 potassium channel blocker. Br J Pharmacol 2021; 178:2617-2631. [PMID: 33689167 DOI: 10.1111/bph.15441] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 01/15/2021] [Accepted: 02/09/2021] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND AND PURPOSE KV 1.3 potassium channels play a predominant role in regulating calcium signalling that is essential for the activation and proliferation of effector memory T (TEM ) cells. This ion channel has been recognized as a promising therapeutic target against various autoimmune diseases. EXPERIMENTAL APPROACH In a high-throughput screening programme, WP1066 was identified as a KV 1.3 channel inhibitor. Using molecular biology and electrophysiological methods, the mechanism(s) underlying WP1066 blockade of Kv1.3 channels was investigated. Using TEM cell proliferation assay and mouse delayed-type hypersensitivity (DTH) model, the effects of WP1066 were examined. KEY RESULTS WP1066 blocked KV 1.3 channels in a dose-dependent manner with an IC50 of 3.2 μM and induced a hyperpolarizing shift of the steady-state inactivation curve. This blockade was use-dependent, as WP1066 interacted preferentially with channels in their open state, rather than the closed state or inactivated state. When the residues located in the S6 domain scaffolding the inner vestibule, were sequentially mutated, the potency of WP1066 was significantly impaired, especially by mutations A413C and I420C, indicating a higher affinity of interacting sites for WP1066. Moreover, WP1066 effectively suppressed mouse TEM cell proliferation in vitro and mouse DTH reaction in vivo. CONCLUSIONS AND IMPLICATIONS The results presented here have identified WP1066 as a KV 1.3 channel blocker with an open-state-dependent property, providing fundamental evidence for the application of WP1066 in further immunomodulatory studies targeting KV 1.3 channels.
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Affiliation(s)
- Min Li
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Haibo Yu
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Nailwal NP, Doshi GM. Role of intracellular signaling pathways and their inhibitors in the treatment of inflammation. Inflammopharmacology 2021; 29:617-640. [PMID: 34002330 DOI: 10.1007/s10787-021-00813-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 04/24/2021] [Indexed: 12/11/2022]
Abstract
Inflammation is not only a defense mechanism of the innate immune system against invaders, but it is also involved in the pathogenesis of many diseases such as atherosclerosis, thrombosis, diabetes, epilepsy, and many neurodegenerative disorders. The World Health Organization (WHO) reports worldwide estimates of people (9.6% in males and 18.0% in females) aged over 60 years, suffering from symptomatic osteoarthritis, and around 339 million suffering from asthma. Other chronic inflammatory diseases, such as ulcerative colitis and Crohn's disease are also highly prevalent. The existing anti-inflammatory agents, both non-steroidal and steroidal, are highly effective; however, their prolonged use is marred by the severity of associated side effects. A holistic approach to ensure patient compliance requires understanding the pathophysiology of inflammation and exploring new targets for drug development. In this regard, various intracellular cell signaling pathways and their signaling molecules have been identified to be associated with inflammation. Therefore, chemical inhibitors of these pathways may be potential candidates for novel anti-inflammatory drug approaches. This review focuses on the anti-inflammatory effect of these inhibitors (for JAK/STAT, MAPK, and mTOR pathways) describing their mechanism of action through literature search, current patents, and molecules under clinical trials.
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Affiliation(s)
- Namrata P Nailwal
- Department of Pharmacology, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Mithibai Campus, Vile Parle (W), V. M. Road, 400056, Mumbai, India
| | - Gaurav M Doshi
- Department of Pharmacology, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Mithibai Campus, Vile Parle (W), V. M. Road, 400056, Mumbai, India.
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104
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Rasheed M, Liang J, Wang C, Deng Y, Chen Z. Epigenetic Regulation of Neuroinflammation in Parkinson's Disease. Int J Mol Sci 2021; 22:4956. [PMID: 34066949 PMCID: PMC8125491 DOI: 10.3390/ijms22094956] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 04/27/2021] [Accepted: 04/29/2021] [Indexed: 02/08/2023] Open
Abstract
Neuroinflammation is one of the most significant factors involved in the initiation and progression of Parkinson's disease. PD is a neurodegenerative disorder with a motor disability linked with various complex and diversified risk factors. These factors trigger myriads of cellular and molecular processes, such as misfolding defective proteins, oxidative stress, mitochondrial dysfunction, and neurotoxic substances that induce selective neurodegeneration of dopamine neurons. This neuronal damage activates the neuronal immune system, including glial cells and inflammatory cytokines, to trigger neuroinflammation. The transition of acute to chronic neuroinflammation enhances the susceptibility of inflammation-induced dopaminergic neuron damage, forming a vicious cycle and prompting an individual to PD development. Epigenetic mechanisms recently have been at the forefront of the regulation of neuroinflammatory factors in PD, proposing a new dawn for breaking this vicious cycle. This review examined the core epigenetic mechanisms involved in the activation and phenotypic transformation of glial cells mediated neuroinflammation in PD. We found that epigenetic mechanisms do not work independently, despite being coordinated with each other to activate neuroinflammatory pathways. In this regard, we attempted to find the synergic correlation and contribution of these epigenetic modifications with various neuroinflammatory pathways to broaden the canvas of underlying pathological mechanisms involved in PD development. Moreover, this study highlighted the dual characteristics (neuroprotective/neurotoxic) of these epigenetic marks, which may counteract PD pathogenesis and make them potential candidates for devising future PD diagnosis and treatment.
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Affiliation(s)
| | | | | | | | - Zixuan Chen
- School of Life Science, Beijing Institute of Technology, Beijing 100081, China; (M.R.); (J.L.); (C.W.); (Y.D.)
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Meng X, Zhong J, Zeng C, Yung KKL, Zhang X, Wu X, Qu S. MiR-30a-5p Regulates GLT-1 Function via a PKCα-Mediated Ubiquitin Degradation Pathway in a Mouse Model of Parkinson's Disease. ACS Chem Neurosci 2021; 12:1578-1592. [PMID: 33882234 DOI: 10.1021/acschemneuro.1c00076] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Glutamate excitotoxicity is caused by dysfunctional glutamate transporters and plays an important role in the pathogenesis of Parkinson's disease (PD); however, the mechanisms that underlie the regulation of glutamate transporters in PD are still not fully elucidated. MicroRNAs(miRNA), which are abundant in astrocytes and neurons, have been reported to play key roles in regulating the translation of glutamate-transporter mRNA. In this study, we hypothesized that the miR-30a-5p contributes to the pathogenesis of PD by regulating the ubiquitin-mediated degradation of glutamate transporter 1 (GLT-1). We demonstrated that short-hairpin RNA-mediated knockdown of miR-30a-5p ameliorated motor deficits and pathological changes like astrogliosis and reactive microgliosis in a mouse model of PD (1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-treated mice). Western blotting and immunofluorescent labeling revealed that miR-30a-5p suppressed the expression and function of GLT-1 in MPTP-treated mice and specifically in astrocytes treated with 1-methyl-4-phenylpyridinium (MPP+) (cell model of PD). Both in vitro and in vivo, we found that miR-30a-5p knockdown promoted glutamate uptake and increased GLT-1 expression by hindering GLT-1 ubiquitination and subsequent degradation in a PKCα-dependent manner. Therefore, we conclude that miR-30a-5p represents a potential therapeutic target for the treatment of PD.
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Affiliation(s)
- Xingjun Meng
- Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
- Central Laboratory and Department of Neurology, Shunde Hospital, Southern Medical University (The First People’s Hospital of Shunde Foshan), Foshan, Guangdong 528300, China
- Guangdong-Hong Kong-Macao Greater Bay Area Center for Brain Science and Brain-Inspired Intelligence, Guangzhou, Guangdong 510515, China
- Key Laboratory of Mental Health of the Ministry of Education, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Jianping Zhong
- Department of Neurology, Shunde Hospital of Southern Medical University (The First People’s Hospital of Shunde Foshan), Foshan, Guangdong 528300, China
| | - Chong Zeng
- Central Laboratory and Department of Neurology, Shunde Hospital, Southern Medical University (The First People’s Hospital of Shunde Foshan), Foshan, Guangdong 528300, China
| | - Ken Kin Lam Yung
- Department of Biology, Faculty of Science, Hong Kong Baptist University, Hong Kong, China
| | - Xiuping Zhang
- Teaching Center of Experimental Medicine, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Xiaojuan Wu
- Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Shaogang Qu
- Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
- Central Laboratory and Department of Neurology, Shunde Hospital, Southern Medical University (The First People’s Hospital of Shunde Foshan), Foshan, Guangdong 528300, China
- Guangdong-Hong Kong-Macao Greater Bay Area Center for Brain Science and Brain-Inspired Intelligence, Guangzhou, Guangdong 510515, China
- Key Laboratory of Mental Health of the Ministry of Education, Southern Medical University, Guangzhou, Guangdong 510515, China
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106
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Roles of the Functional Interaction between Brain Cholinergic and Dopaminergic Systems in the Pathogenesis and Treatment of Schizophrenia and Parkinson's Disease. Int J Mol Sci 2021; 22:ijms22094299. [PMID: 33919025 PMCID: PMC8122651 DOI: 10.3390/ijms22094299] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 04/15/2021] [Accepted: 04/16/2021] [Indexed: 12/14/2022] Open
Abstract
Most physiologic processes in the brain and related diseases involve more than one neurotransmitter system. Thus, elucidation of the interaction between different neurotransmitter systems could allow for better therapeutic approaches to the treatments of related diseases. Dopaminergic (DAergic) and cholinergic neurotransmitter system regulate various brain functions that include cognition, movement, emotion, etc. This review focuses on the interaction between the brain DAergic and cholinergic systems with respect to the pathogenesis and treatment of schizophrenia and Parkinson’s disease (PD). We first discussed the selection of motor plans at the level of basal ganglia, the major DAergic and cholinergic pathways in the brain, and the receptor subtypes involved in the interaction between the two signaling systems. Next, the roles of each signaling system were discussed in the context of the negative symptoms of schizophrenia, with a focus on the α7 nicotinic cholinergic receptor and the dopamine D1 receptor in the prefrontal cortex. In addition, the roles of the nicotinic and dopamine receptors were discussed in the context of regulation of striatal cholinergic interneurons, which play crucial roles in the degeneration of nigrostriatal DAergic neurons and the development of L-DOPA-induced dyskinesia in PD patients. Finally, we discussed the general mechanisms of nicotine-induced protection of DAergic neurons.
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107
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Mechanistic interplay of various mediators involved in mediating the neuroprotective effect of daphnetin. Pharmacol Rep 2021; 73:1220-1229. [PMID: 33860917 DOI: 10.1007/s43440-021-00261-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 03/11/2021] [Accepted: 04/02/2021] [Indexed: 12/20/2022]
Abstract
Daphnetin is a 7, 8 dihydroxy coumarin isolated from different medicinal plants of the Thymelaeaceae family and exhibits copious pharmacological activities including neuroprotection, anti-cancer, anti-malarial, anti-inflammatory, anti-parasitic and anti-arthritic activity. It has been proved to be an effective neuroprotective agent in several preclinical animal studies and cell line examinations. It is found to interact with different cellular mediators and signaling pathways to confer protection against neurodegeneration. The reactive oxygen species and inflammatory mediators are the major culprits of different neurodegenerative diseases. Oxidative stress activates the pro-apoptotic proteins and inhibits anti-apoptotic proteins, leading to neuronal cell death. Daphnetin restores cellular redox balance by upregulating the antioxidants level (GSH and SOD), anti-apoptotic protein (Bcl-2), as well as by reducing the levels of proinflammatory cytokines, executioner caspase-3, pro-apoptotic-Bax, and oxidative stress markers. Furthermore, activation of Nrf-2/HO-1 signaling and upregulation of HSP-70 governs the protection elicited by daphnetin against oxidative stress-induced neuronal apoptosis. Daphnetin modulated inhibition of JNK-MAPK, JAK-STAT, and TLR-4/NF-κB signaling pathways also contributed to its neuroprotective effect. The positive effects of daphnetin have been also related to its AChE, BChE, and BACE-1 inhibitory potential. The present review has been designed to explore the mechanistic interplay of various mediators in mediating the neuroprotective effects of daphnetin.
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108
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Sex-based differences in the activation of peripheral blood monocytes in early Parkinson disease. NPJ PARKINSONS DISEASE 2021; 7:36. [PMID: 33850148 PMCID: PMC8044127 DOI: 10.1038/s41531-021-00180-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 03/17/2021] [Indexed: 12/12/2022]
Abstract
Increasing evidence supports the role of brain and systemic inflammation in the etiology of Parkinson disease (PD). We used gene expression profiling to examine the activation state of peripheral blood monocytes in 18 patients with early, untreated PD and 16 healthy control (HC) subjects. Monocytes were isolated by negative selection, and gene expression studied by RNA-seq and gene set enrichment analysis. A computational model that incorporated case/control status, sex, and the interaction between case/control status and sex was utilized. We found that there was a striking effect of sex on monocyte gene expression. There was inflammatory activation of monocytes in females with PD, with enrichment of gene sets associated with interferon gamma stimulation. In males, the activation patterns were more heterogeneous. These data point to the importance of systemic monocyte activation in PD, and the importance of studies which examine the differential effects of sex on pathophysiology of the disease.
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109
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Zhang L, He Y, Lei K, Fang Z, Li Q, Su J, Nie Z, Xu Y, Jin L. Gene expression profiling of early Parkinson's disease patient reveals redox homeostasis. Neurosci Lett 2021; 753:135893. [PMID: 33857551 DOI: 10.1016/j.neulet.2021.135893] [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: 01/08/2021] [Revised: 04/05/2021] [Accepted: 04/07/2021] [Indexed: 01/28/2023]
Abstract
Parkinson's disease (PD) is slowly progressive. Due to the lack of specific and sensitive biomarkers, the majority of PD patients are in the advanced stages when diagnosed. This study aimed to investigate biomarkers for early PD diagnosis. We first selected differential mRNAs by analysis of a Gene Expression Omnibus (GEO) data set. Next, we performed RNA sequencing to select differential mRNAs. After an integrated analysis of GEO and RNAseq data, we identified the PD early diagnosis biomarkers associated with oxidative stress. By function analysis, cellular response to hormone stimulus and response to the oxygen-containing compound was involved in the top Gene Set Enrichment Analysis (GSEA)s of the two cohorts. Moreover, SOCS7 was included in these GSEAs coincidentally. Further, by analyzing SOCS7 and its physical interactors, we found they mainly participate in immunity and redox homeostasis related processes, which might play a significant role in PD. Thus, our results suggest SOCS7 might be the potential diagnostic marker for PD.
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Affiliation(s)
- Liwen Zhang
- Neurotoxin Research Center of Key Laboratory of Spine and Spinal Cord Injury Repair and Regeneration of Ministry of Education, Neurological Department of Tongji Hospital, Tongji University School of Medicine, Shanghai, 200065, PR China; National Engineering Research Center for Biochip at Shanghai, Shanghai Biochip Limited Corporation, 201203, Shanghai, PR China; Department of Data & Analytics, WuXi Diagnostics Limited Corporation, 200131, Shanghai, PR China
| | - Yijing He
- Neurotoxin Research Center of Key Laboratory of Spine and Spinal Cord Injury Repair and Regeneration of Ministry of Education, Neurological Department of Tongji Hospital, Tongji University School of Medicine, Shanghai, 200065, PR China
| | - Kecheng Lei
- Neurotoxin Research Center of Key Laboratory of Spine and Spinal Cord Injury Repair and Regeneration of Ministry of Education, Neurological Department of Tongji Hospital, Tongji University School of Medicine, Shanghai, 200065, PR China; Department of Pathology and Laboratory Medicine, Emory University School of Medicine, 30322, Atlanta, GA, USA
| | - Zhuo Fang
- Department of Data & Analytics, WuXi Diagnostics Limited Corporation, 200131, Shanghai, PR China
| | - Qian Li
- National Engineering Research Center for Biochip at Shanghai, Shanghai Biochip Limited Corporation, 201203, Shanghai, PR China; Department of Pathology, Shanghai Tongji Hospital, Tongji Hospital Affiliated to Tongji University, 200065, Shanghai, PR China
| | - Jun Su
- National Engineering Research Center for Biochip at Shanghai, Shanghai Biochip Limited Corporation, 201203, Shanghai, PR China; Department of Pathology, Shanghai Tongji Hospital, Tongji Hospital Affiliated to Tongji University, 200065, Shanghai, PR China
| | - Zhiyu Nie
- Neurotoxin Research Center of Key Laboratory of Spine and Spinal Cord Injury Repair and Regeneration of Ministry of Education, Neurological Department of Tongji Hospital, Tongji University School of Medicine, Shanghai, 200065, PR China.
| | - Yichun Xu
- National Engineering Research Center for Biochip at Shanghai, Shanghai Biochip Limited Corporation, 201203, Shanghai, PR China; Department of Pathology, Shanghai Tongji Hospital, Tongji Hospital Affiliated to Tongji University, 200065, Shanghai, PR China.
| | - Lingjing Jin
- Neurotoxin Research Center of Key Laboratory of Spine and Spinal Cord Injury Repair and Regeneration of Ministry of Education, Neurological Department of Tongji Hospital, Tongji University School of Medicine, Shanghai, 200065, PR China.
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Maheshvara regulates JAK/STAT signaling by interacting and stabilizing hopscotch transcripts which leads to apoptosis in Drosophila melanogaster. Cell Death Dis 2021; 12:363. [PMID: 33824299 PMCID: PMC8024297 DOI: 10.1038/s41419-021-03649-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 03/17/2021] [Accepted: 03/18/2021] [Indexed: 02/01/2023]
Abstract
Maheshvara (mahe), an RNA helicase that is widely conserved across taxa, regulates Notch signaling and neuronal development in Drosophila. In order to identify novel components regulated by mahe, transcriptome profiling of ectopic mahe was carried out and this revealed striking upregulation of JAK/STAT pathway components like upd1, upd2, upd3, and socs36E. Further, significant downregulation of the pathway components in mahe loss-of-function mutant as well as upon lowering the level of mahe by RNAi, supported and strengthened our transcriptome data. Parallelly, we observed that mahe, induced caspase-dependent apoptosis in photoreceptor neurons, and this phenotype was significantly modulated by JAK/STAT pathway components. RNA immunoprecipitation unveiled the presence of JAK/STAT tyrosine kinase hopscotch (hop) transcripts in the complex immunoprecipitated with Mahe, which ultimately resulted in stabilization and elevation of hop transcripts. Additionally, we also observed the surge in activity of downstream transcription factor Stat92E, which is indicative of activation of the JAK/STAT signaling, and this in turn led to apoptosis via upregulation of hid. Taken together, our data provide a novel regulation of JAK/STAT pathway by RNA helicase Maheshvara, which ultimately promotes apoptosis.
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111
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Jin J, Guang M, Ogbuehi AC, Li S, Zhang K, Ma Y, Acharya A, Guo B, Peng Z, Liu X, Deng Y, Fang Z, Zhu X, Hua S, Li C, Haak R, Ziebolz D, Schmalz G, Liu L, Xu B, Huang X. Shared Molecular Mechanisms between Alzheimer's Disease and Periodontitis Revealed by Transcriptomic Analysis. BIOMED RESEARCH INTERNATIONAL 2021; 2021:6633563. [PMID: 33869630 PMCID: PMC8032519 DOI: 10.1155/2021/6633563] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 02/20/2021] [Accepted: 03/09/2021] [Indexed: 12/12/2022]
Abstract
OBJECTIVE To investigate the genetic crosstalk mechanisms that link periodontitis and Alzheimer's disease (AD). BACKGROUND Periodontitis, a common oral infectious disease, is associated with Alzheimer's disease (AD) and considered a putative contributory factor to its progression. However, a comprehensive investigation of potential shared genetic mechanisms between these diseases has not yet been reported. METHODS Gene expression datasets related to periodontitis were downloaded from the Gene Expression Omnibus (GEO) database, and differential expression analysis was performed to identify differentially expressed genes (DEGs). Genes associated with AD were downloaded from the DisGeNET database. Overlapping genes among the DEGs in periodontitis and the AD-related genes were defined as crosstalk genes between periodontitis and AD. The Boruta algorithm was applied to perform feature selection from these crosstalk genes, and representative crosstalk genes were thus obtained. In addition, a support vector machine (SVM) model was constructed by using the scikit-learn algorithm in Python. Next, the crosstalk gene-TF network and crosstalk gene-DEP (differentially expressed pathway) network were each constructed. As a final step, shared genes among the crosstalk genes and periodontitis-related genes in DisGeNET were identified and denoted as the core crosstalk genes. RESULTS Four datasets (GSE23586, GSE16134, GSE10334, and GSE79705) pertaining to periodontitis were included in the analysis. A total of 48 representative crosstalk genes were identified by using the Boruta algorithm. Three TFs (FOS, MEF2C, and USF2) and several pathways (i.e., JAK-STAT, MAPK, NF-kappa B, and natural killer cell-mediated cytotoxicity) were identified as regulators of these crosstalk genes. Among these 48 crosstalk genes and the chronic periodontitis-related genes in DisGeNET, C4A, C4B, CXCL12, FCGR3A, IL1B, and MMP3 were shared and identified as the most pivotal candidate links between periodontitis and AD. CONCLUSIONS Exploration of available transcriptomic datasets revealed C4A, C4B, CXCL12, FCGR3A, IL1B, and MMP3 as the top candidate molecular linkage genes between periodontitis and AD.
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Affiliation(s)
- Jieqi Jin
- Department of Stomatology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Mengkai Guang
- Department of Stomatology, China-Japan Friendship Hospital, Beijing 100029, China
| | | | - Simin Li
- Department of Cariology, Endodontology and Periodontology, University Leipzig, Liebigstr. 12, Leipzig 04103, Germany
| | - Kai Zhang
- Department of Stomatology, China-Japan Friendship Hospital, Beijing 100029, China
| | - Yihong Ma
- Department of Neurology, Graduate School of Medical Sciences, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Aneesha Acharya
- Dr. D Y Patil Dental College and Hospital, Dr D Y Patil Vidyapeeth, Pimpri, Pune, India
| | - Bihan Guo
- Faculty of Electrical Engineering, Information Technology, and Physics, University Braunschweig, Hans-Sommer-Str. 66, Braunschweig 38106, Germany
| | - Zongwu Peng
- Faculty of Electrical Engineering, Information Technology, and Physics, University Braunschweig, Hans-Sommer-Str. 66, Braunschweig 38106, Germany
| | - Xiangqiong Liu
- Laboratory of Molecular Cell Biology, Beijing Tibetan Hospital, China Tibetology Research Center, 218 Anwaixiaoguanbeili Street, Chaoyang, Beijing 100029, China
| | - Yupei Deng
- Laboratory of Molecular Cell Biology, Beijing Tibetan Hospital, China Tibetology Research Center, 218 Anwaixiaoguanbeili Street, Chaoyang, Beijing 100029, China
| | - Zhaobi Fang
- Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Xiongjie Zhu
- Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Shiting Hua
- Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Cong Li
- Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Rainer Haak
- Department of Cariology, Endodontology and Periodontology, University Leipzig, Liebigstr. 12, Leipzig 04103, Germany
| | - Dirk Ziebolz
- Department of Cariology, Endodontology and Periodontology, University Leipzig, Liebigstr. 12, Leipzig 04103, Germany
| | - Gerhard Schmalz
- Department of Cariology, Endodontology and Periodontology, University Leipzig, Liebigstr. 12, Leipzig 04103, Germany
| | - Lei Liu
- Department of Neurology, Shandong Provincial Third Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 10091 Shandong Province, China
| | - Baohua Xu
- Department of Stomatology, China-Japan Friendship Hospital, Beijing 100029, China
| | - Xiaofeng Huang
- Department of Stomatology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
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Chen M, Xiao L, Dai G, Lu P, Zhang Y, Li Y, Ni M, Rui Y. Inhibition of JAK-STAT Signaling Pathway Alleviates Age-Related Phenotypes in Tendon Stem/Progenitor Cells. Front Cell Dev Biol 2021; 9:650250. [PMID: 33855026 PMCID: PMC8039155 DOI: 10.3389/fcell.2021.650250] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 02/23/2021] [Indexed: 12/14/2022] Open
Abstract
Diminished regeneration or healing capacity of tendon occurs during aging. It has been well demonstrated that tendon stem/progenitor cells (TSPCs) play a vital role in tendon maintenance and repair. Here, we identified an accumulation of senescent TSPCs in tendon tissue with aging. In aged TSPCs, the activity of JAK-STAT signaling pathway was increased. Besides, genetic knockdown of JAK2 or STAT3 significantly attenuated TSPC senescence in aged TSPCs. Pharmacological inhibition of JAK-STAT signaling pathway with AG490 similarly attenuated cellular senescence and senescence-associated secretory phenotype (SASP) of aged TSPCs. In addition, inhibition of JAK-STAT signaling pathway also restored the age-related dysfunctions of TSPCs, including self-renewal, migration, actin dynamics, and stemness. Together, our findings reveal the critical role of JAK-STAT signaling pathway in the regulation of TSPC aging and suggest an ideal therapeutic target for the age-related tendon disorders.
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Affiliation(s)
- Minhao Chen
- Department of Orthopaedics, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China.,Orthopaedic Trauma Institute (OTI), Southeast University, Nanjing, China.,Trauma Center, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Longfei Xiao
- Department of Orthopaedics, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China.,Orthopaedic Trauma Institute (OTI), Southeast University, Nanjing, China.,Trauma Center, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Guangchun Dai
- Department of Orthopaedics, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China.,Orthopaedic Trauma Institute (OTI), Southeast University, Nanjing, China.,Trauma Center, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Panpan Lu
- Department of Orthopaedics, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China.,Orthopaedic Trauma Institute (OTI), Southeast University, Nanjing, China.,Trauma Center, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Yuanwei Zhang
- Department of Orthopaedics, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China.,Orthopaedic Trauma Institute (OTI), Southeast University, Nanjing, China.,Trauma Center, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Yingjuan Li
- Department of Geriatrics, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Ming Ni
- Department of Orthopedics, The First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Yunfeng Rui
- Department of Orthopaedics, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China.,Orthopaedic Trauma Institute (OTI), Southeast University, Nanjing, China.,Trauma Center, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China.,China Orthopedic Regenerative Medicine Group, Hangzhou, China
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113
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Bogale TA, Faustini G, Longhena F, Mitola S, Pizzi M, Bellucci A. Alpha-Synuclein in the Regulation of Brain Endothelial and Perivascular Cells: Gaps and Future Perspectives. Front Immunol 2021; 12:611761. [PMID: 33679750 PMCID: PMC7933041 DOI: 10.3389/fimmu.2021.611761] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 01/27/2021] [Indexed: 12/27/2022] Open
Abstract
Misfolded proteins, inflammation, and vascular alterations are common pathological hallmarks of neurodegenerative diseases. Alpha-synuclein is a small synaptic protein that was identified as a major component of Lewy bodies and Lewy neurites in the brain of patients affected by Parkinson's disease (PD), Lewy body dementia (LBD), and other synucleinopathies. It is mainly involved in the regulation of synaptic vesicle trafficking but can also control mitochondrial/endoplasmic reticulum (ER) homeostasis, lysosome/phagosome function, and cytoskeleton organization. Recent evidence supports that the pathological forms of α-synuclein can also reduce the release of vasoactive and inflammatory mediators from endothelial cells (ECs) and modulates the expression of tight junction (TJ) proteins important for maintaining the blood-brain barrier (BBB). This hints that α-synuclein deposition can affect BBB integrity. Border associated macrophages (BAMs) are brain resident macrophages found in association with the vasculature (PVMs), meninges (MAMs), and choroid plexus (CPMs). Recent findings indicate that these cells play distinct roles in stroke and neurodegenerative disorders. Although many studies have addressed how α-synuclein may modulate microglia, its effect on BAMs has been scarcely investigated. This review aims at summarizing the main findings supporting how α-synuclein can affect ECs and/or BAMs function as well as their interplay and effect on other cells in the brain perivascular environment in physiological and pathological conditions. Gaps of knowledge and new perspectives on how this protein can contribute to neurodegeneration by inducing BBB homeostatic changes in different neurological conditions are highlighted.
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Affiliation(s)
- Tizibt Ashine Bogale
- Division of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Gaia Faustini
- Division of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Francesca Longhena
- Division of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Stefania Mitola
- Biotechnology Division, Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
- Laboratory for Preventive and Personalized Medicine, Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Marina Pizzi
- Division of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Arianna Bellucci
- Division of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
- Laboratory for Preventive and Personalized Medicine, Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
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114
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Wang T, Shi C, Luo H, Zheng H, Fan L, Tang M, Su Y, Yang J, Mao C, Xu Y. Neuroinflammation in Parkinson's Disease: Triggers, Mechanisms, and Immunotherapies. Neuroscientist 2021; 28:364-381. [PMID: 33576313 DOI: 10.1177/1073858421991066] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Parkinson's disease (PD) is a heterogeneous neurodegenerative disease involving multiple etiologies and pathogenesis, in which neuroinflammation is a common factor. Both preclinical experiments and clinical studies provide evidence for the involvement of neuroinflammation in the pathophysiology of PD, although there are a number of key issues related to neuroinflammatory processes in PD that remain to be addressed. In this review, we highlight the relationship between the common pathological mechanisms of PD and neuroinflammation, including aggregation of α-synuclein, genetic factors, mitochondrial dysfunction, and gut microbiome dysbiosis. We also describe the two positive feedback loops initiated in PD after the immune system is activated, and their role in the pathogenesis of PD. In addition, the interconnections and differences between the central and peripheral immune systems are discussed. Finally, we review the latest progress in immunotherapy research for PD patients, and propose future directions for clinical research.
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Affiliation(s)
- Tai Wang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China.,The Academy of Medical Sciences of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
| | - Changhe Shi
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China.,Henan Key Laboratory of Cerebrovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China.,Institute of Neuroscience, Zhengzhou University, Zhengzhou, Henan, China
| | - Haiyang Luo
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China.,The Academy of Medical Sciences of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China.,Henan Key Laboratory of Cerebrovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
| | - Huimin Zheng
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China.,The Academy of Medical Sciences of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China.,Henan Key Laboratory of Cerebrovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
| | - Liyuan Fan
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China.,The Academy of Medical Sciences of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China.,Henan Key Laboratory of Cerebrovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
| | - Mibo Tang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China.,The Academy of Medical Sciences of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China.,Henan Key Laboratory of Cerebrovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
| | - Yun Su
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China.,The Academy of Medical Sciences of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China.,Henan Key Laboratory of Cerebrovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
| | - Jing Yang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China.,Henan Key Laboratory of Cerebrovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China.,Institute of Neuroscience, Zhengzhou University, Zhengzhou, Henan, China
| | - Chengyuan Mao
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China.,The Academy of Medical Sciences of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China.,Henan Key Laboratory of Cerebrovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China.,Sino-British Research Centre for Molecular Oncology, National Centre for International Research in Cell and Gene Therapy, School of Basic Medical Sciences, Academy of Medical Sciences, Zhengzhou University, Zhengzhou, Henan, China
| | - Yuming Xu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China.,Henan Key Laboratory of Cerebrovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China.,Institute of Neuroscience, Zhengzhou University, Zhengzhou, Henan, China
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115
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Fryer AL, Abdullah A, Taylor JM, Crack PJ. The Complexity of the cGAS-STING Pathway in CNS Pathologies. Front Neurosci 2021; 15:621501. [PMID: 33633536 PMCID: PMC7900568 DOI: 10.3389/fnins.2021.621501] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 01/19/2021] [Indexed: 12/21/2022] Open
Abstract
Neuroinflammation driven by type-I interferons in the CNS is well established to exacerbate the progression of many CNS pathologies both acute and chronic. The role of adaptor protein Stimulator of Interferon Genes (STING) is increasingly appreciated to instigate type-I IFN-mediated neuroinflammation. As an upstream regulator of type-I IFNs, STING modulation presents a novel therapeutic opportunity to mediate inflammation in the CNS. This review will detail the current knowledge of protective and detrimental STING activity in acute and chronic CNS pathologies and the current therapeutic avenues being explored.
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Affiliation(s)
- Amelia L Fryer
- Neuropharmacology Laboratory, Department of Pharmacology and Therapeutics, University of Melbourne, Melbourne, VIC, Australia
| | - Amar Abdullah
- Neuropharmacology Laboratory, Department of Pharmacology and Therapeutics, University of Melbourne, Melbourne, VIC, Australia
| | - Juliet M Taylor
- Neuropharmacology Laboratory, Department of Pharmacology and Therapeutics, University of Melbourne, Melbourne, VIC, Australia
| | - Peter J Crack
- Neuropharmacology Laboratory, Department of Pharmacology and Therapeutics, University of Melbourne, Melbourne, VIC, Australia
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116
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Magalhaes J, Tresse E, Ejlerskov P, Hu E, Liu Y, Marin A, Montalant A, Satriano L, Rundsten CF, Carlsen EMM, Rydbirk R, Sharifi-Zarchi A, Andersen JB, Aznar S, Brudek T, Khodosevich K, Prinz M, Perrier JFM, Sharma M, Gasser T, Issazadeh-Navikas S. PIAS2-mediated blockade of IFN-β signaling: a basis for sporadic Parkinson disease dementia. Mol Psychiatry 2021; 26:6083-6099. [PMID: 34234281 PMCID: PMC8758491 DOI: 10.1038/s41380-021-01207-w] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 05/21/2021] [Accepted: 06/23/2021] [Indexed: 11/17/2022]
Abstract
Familial Parkinson disease (PD) is associated with rare genetic mutations, but the etiology in most patients with sporadic (s)PD is largely unknown, and the basis for its progression to dementia (sPDD) is poorly characterized. We have identified that loss of IFNβ or IFNAR1, the receptor for IFNα/β, causes pathological and behavioral changes resembling PDD, prompting us to hypothesize that dysregulated genes in IFNβ-IFNAR signaling pathway predispose one to sPD. By transcriptomic analysis, we found defective neuronal IFNβ-IFNAR signaling, including particularly elevated PIAS2 associated with sPDD. With meta-analysis of GWASs, we identified sequence variants in IFNβ-IFNAR-related genes in sPD patients. Furthermore, sPDD patients expressed higher levels of PIAS2 mRNA and protein in neurons. To determine its function in brain, we overexpressed PIAS2 under a neuronal promoter, alone or with human α-synuclein, in the brains of mice, which caused motor and cognitive impairments and correlated with intraneuronal phosphorylated (p)α-synuclein accumulation and dopaminergic neuron loss. Ectopic expression of neuronal PIAS2 blocked mitophagy, increased the accumulation of senescent mitochondrial and oxidative stress, as evidenced by excessive oxDJ1 and 8OHdG, by inactivating ERK1/2-P53 signaling. Conversely, PIAS2 knockdown rescued the clinicopathological manifestations of PDD in Ifnb-/- mice on restoring mitochondrial homeostasis, oxidative stress, and pERK1/2-pP53 signaling. The regulation of JAK-STAT2-PIAS2 signaling was crucial for neurite outgrowth and neuronal survival and excitability and thus might prevent cognitive impairments. Our findings provide insights into the progression of sPD and dementia and have implications for new therapeutic approaches.
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Affiliation(s)
- Joana Magalhaes
- grid.5254.60000 0001 0674 042XBiotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark
| | - Emilie Tresse
- grid.5254.60000 0001 0674 042XBiotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark
| | - Patrick Ejlerskov
- grid.5254.60000 0001 0674 042XBiotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark
| | - Erling Hu
- grid.5254.60000 0001 0674 042XBiotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark
| | - Yawei Liu
- grid.5254.60000 0001 0674 042XBiotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark
| | - Andrea Marin
- grid.5254.60000 0001 0674 042XBiotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark
| | - Alexia Montalant
- grid.5254.60000 0001 0674 042XBiotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark ,grid.5254.60000 0001 0674 042XNeuronal Signaling Lab, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Letizia Satriano
- grid.5254.60000 0001 0674 042XBiotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark
| | - Carsten Friis Rundsten
- grid.5254.60000 0001 0674 042XBiotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark
| | - Eva Maria Meier Carlsen
- grid.5254.60000 0001 0674 042XNeuronal Signaling Lab, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Rasmus Rydbirk
- grid.512917.9Research Laboratory for Stereology and Neuroscience, Center for Translational Research, Bispebjerg-Frederiksberg Hospital, Copenhagen, Denmark
| | - Ali Sharifi-Zarchi
- grid.419336.a0000 0004 0612 4397Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Jesper Bøje Andersen
- grid.5254.60000 0001 0674 042XBiotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark
| | - Susana Aznar
- grid.512917.9Research Laboratory for Stereology and Neuroscience, Center for Translational Research, Bispebjerg-Frederiksberg Hospital, Copenhagen, Denmark
| | - Tomasz Brudek
- grid.512917.9Research Laboratory for Stereology and Neuroscience, Center for Translational Research, Bispebjerg-Frederiksberg Hospital, Copenhagen, Denmark
| | - Konstantin Khodosevich
- grid.5254.60000 0001 0674 042XBiotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark
| | - Marco Prinz
- grid.5963.9Institute of Neuropathology, Signalling Research Centres BIOSS and CIBSS, Center for Basics in NeuroModulation (NeuroModulBasics), Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Jean-François Marie Perrier
- grid.5254.60000 0001 0674 042XNeuronal Signaling Lab, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Manu Sharma
- grid.10392.390000 0001 2190 1447Hertie Institute for Clinical Brain Research, University of Tübingen, Tübingen, Germany ,grid.10392.390000 0001 2190 1447Centre for Genetic Epidemiology, Institute for Clinical Epidemiology and Applied Biometry, University of Tübingen, Tübingen, Germany
| | - Thomas Gasser
- grid.10392.390000 0001 2190 1447Centre for Genetic Epidemiology, Institute for Clinical Epidemiology and Applied Biometry, University of Tübingen, Tübingen, Germany
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Deng H, Liu S, Pan D, Jia Y, Ma ZG. Myricetin reduces cytotoxicity by suppressing hepcidin expression in MES23.5 cells. Neural Regen Res 2021; 16:1105-1110. [PMID: 33269757 PMCID: PMC8224113 DOI: 10.4103/1673-5374.300461] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Multiple studies implicate iron accumulation in the substantia nigra in the degeneration of dopaminergic neurons in Parkinson’s disease. Indeed, slowing of iron accumulation in cells has been identified as the key point for delaying and treating Parkinson’s disease. Myricetin reportedly plays an important role in anti-oxidation, anti-apoptosis, anti-inflammation, and iron chelation. However, the mechanism underlying its neuroprotection remains unclear. In the present study, MES23.5 cells were treated with 1 × 10–6 M myricetin for 1 hour, followed by co-treatment with 400 nM rotenone for 24 hours to establish an in vitro cell model of Parkinson’s disease. Our results revealed that myricetin alleviated rotenone-induced decreases in cell viability, suppressed the production of intracellular reactive oxygen species, and restored mitochondrial transmembrane potential. In addition, myricetin significantly suppressed rotenone-induced hepcidin gene transcription and partly relieved rotenone-induced inhibition of ferroportin 1 mRNA and protein levels. Furthermore, myricetin inhibited rotenone-induced phosphorylation of STAT3 and SMAD1 in MES23.5 cells. These findings suggest that myricetin protected rotenone-treated MES23.5 cells by potently inhibiting hepcidin expression to prevent iron accumulation, and this effect was mediated by alteration of STAT3 and SMAD1 signaling pathways.
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Affiliation(s)
- Han Deng
- Department of Physiology, School of Basic Medicine, Qingdao University, Qingdao, Shandong Province, China
| | - Shang Liu
- Department of Physiology, School of Basic Medicine, Qingdao University, Qingdao, Shandong Province, China
| | - Dong Pan
- Department of Physiology, School of Basic Medicine, Qingdao University, Qingdao, Shandong Province, China
| | - Yi Jia
- Department of Physiology, School of Basic Medicine, Qingdao University, Qingdao, Shandong Province, China
| | - Ze-Gang Ma
- Department of Physiology, School of Basic Medicine; Institute of Brain Science and Disorders, Qingdao University, Qingdao, Shandong Province, China
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118
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Bacelis J, Compagno M, George S, Pospisilik JA, Brundin P, Naluai ÅT, Brundin L. Decreased Risk of Parkinson's Disease After Rheumatoid Arthritis Diagnosis: A Nested Case-Control Study with Matched Cases and Controls. JOURNAL OF PARKINSON'S DISEASE 2021; 11:821-832. [PMID: 33682730 PMCID: PMC8150472 DOI: 10.3233/jpd-202418] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Accepted: 02/10/2021] [Indexed: 01/13/2023]
Abstract
BACKGROUND Rheumatoid arthritis (RA) and the genetic risk landscape of autoimmune disorders and Parkinson's disease (PD) overlap. Additionally, anti-inflammatory medications used to treat RA might influence PD risk. OBJECTIVE To use a population-based approach to determine if there is an association between pre-occurring rheumatoid arthritis (RA) and later-life risk of PD. METHODS The study population was 3.6 million residents of Sweden, who were alive during part or all of the follow-up period; 1997-2016. We obtained diagnoses from the national patient registry and identified 30,032 PD patients, 8,256 of whom each was matched to ten controls based on birth year, sex, birth location, and time of follow-up. We determined the risk reduction for PD in individuals previously diagnosed with RA. We also determined if the time (in relation to the index year) of the RA diagnosis influenced PD risk and repeated the analysis in a sex-stratified setting. RESULTS Individuals with a previous diagnosis of RA had a decreased risk of later developing PD by 30-50% compared to individuals without an RA diagnosis. This relationship was strongest in our conservative analysis, where the first PD diagnosis occurred close to the earliest PD symptoms (odds ratio 0.47 (CI 95% 0.28-0.75, p = 0.0006); with the greatest risk reduction in females (odds ratio 0.40 (CI 95% 0,19-0.76, p = 0.002). DISCUSSION Our findings provide evidence that individuals diagnosed with RA have a significantly lower risk of developing PD than the general population. Our data should be considered when developing or repurposing therapies aimed at modifying the course of PD.
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Affiliation(s)
- Jonas Bacelis
- Center for Neurodegenerative Science, Van Andel Institute, Grand Rapids, MI, USA
| | - Michele Compagno
- Department of Clinical Sciences Lund, Rheumatology, Lund University, Lund, Sweden
| | - Sonia George
- Center for Neurodegenerative Science, Van Andel Institute, Grand Rapids, MI, USA
| | | | - Patrik Brundin
- Center for Neurodegenerative Science, Van Andel Institute, Grand Rapids, MI, USA
| | - Åsa Torinsson Naluai
- Institute of Biomedicine, The Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - Lena Brundin
- Center for Neurodegenerative Science, Van Andel Institute, Grand Rapids, MI, USA
- Department of Psychiatry West, College of Human Medicine, Michigan State University, Grand Rapids, MI, USA
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119
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Emon MA, Heinson A, Wu P, Domingo-Fernández D, Sood M, Vrooman H, Corvol JC, Scordis P, Hofmann-Apitius M, Fröhlich H. Clustering of Alzheimer's and Parkinson's disease based on genetic burden of shared molecular mechanisms. Sci Rep 2020; 10:19097. [PMID: 33154531 PMCID: PMC7645798 DOI: 10.1038/s41598-020-76200-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 10/23/2020] [Indexed: 02/07/2023] Open
Abstract
One of the visions of precision medicine has been to re-define disease taxonomies based on molecular characteristics rather than on phenotypic evidence. However, achieving this goal is highly challenging, specifically in neurology. Our contribution is a machine-learning based joint molecular subtyping of Alzheimer's (AD) and Parkinson's Disease (PD), based on the genetic burden of 15 molecular mechanisms comprising 27 proteins (e.g. APOE) that have been described in both diseases. We demonstrate that our joint AD/PD clustering using a combination of sparse autoencoders and sparse non-negative matrix factorization is reproducible and can be associated with significant differences of AD and PD patient subgroups on a clinical, pathophysiological and molecular level. Hence, clusters are disease-associated. To our knowledge this work is the first demonstration of a mechanism based stratification in the field of neurodegenerative diseases. Overall, we thus see this work as an important step towards a molecular mechanism-based taxonomy of neurological disorders, which could help in developing better targeted therapies in the future by going beyond classical phenotype based disease definitions.
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Affiliation(s)
- Mohammad Asif Emon
- Fraunhofer Institute for Algorithms and Scientific Computing (SCAI), 53754, Sankt Augustin, Germany
- Bonn-Aachen International Center for IT, University of Bonn, Endenicher Allee 19c, 53115, Bonn, Germany
| | - Ashley Heinson
- UCB Pharma (UCB Celltech Ltd.), 208 Bath Road, Slough, SL1 3WE, Berkshire, UK
| | - Ping Wu
- UCB Pharma (UCB Celltech Ltd.), 208 Bath Road, Slough, SL1 3WE, Berkshire, UK
| | - Daniel Domingo-Fernández
- Fraunhofer Institute for Algorithms and Scientific Computing (SCAI), 53754, Sankt Augustin, Germany
- Bonn-Aachen International Center for IT, University of Bonn, Endenicher Allee 19c, 53115, Bonn, Germany
| | - Meemansa Sood
- Fraunhofer Institute for Algorithms and Scientific Computing (SCAI), 53754, Sankt Augustin, Germany
- Bonn-Aachen International Center for IT, University of Bonn, Endenicher Allee 19c, 53115, Bonn, Germany
| | - Henri Vrooman
- Department of Radiology and Nuclear Medicine, Department of Medical Informatics, Erasmus MC, University Medical Center Rotterdam, PO Box 2040, 3000 CA, Rotterdam, The Netherlands
| | | | - Phil Scordis
- UCB Pharma (UCB Celltech Ltd.), 208 Bath Road, Slough, SL1 3WE, Berkshire, UK
| | - Martin Hofmann-Apitius
- Fraunhofer Institute for Algorithms and Scientific Computing (SCAI), 53754, Sankt Augustin, Germany
- Bonn-Aachen International Center for IT, University of Bonn, Endenicher Allee 19c, 53115, Bonn, Germany
| | - Holger Fröhlich
- Fraunhofer Institute for Algorithms and Scientific Computing (SCAI), 53754, Sankt Augustin, Germany.
- Bonn-Aachen International Center for IT, University of Bonn, Endenicher Allee 19c, 53115, Bonn, Germany.
- UCB Pharma (UCB Biosciences GmbH), Alfred-Nobel-Str. 10, 40789, Monheim, Germany.
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Upregulation of interleukin (IL)-31, a cytokine producing CXCR1 peripheral immune cells, contributes to the immune abnormalities of autism spectrum disorder. J Neuroimmunol 2020; 349:577430. [PMID: 33130460 DOI: 10.1016/j.jneuroim.2020.577430] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 10/07/2020] [Accepted: 10/22/2020] [Indexed: 12/13/2022]
Abstract
Autism spectrum disorders (ASD) are a group of neurodevelopmental disorders characterized by communication deficits, impaired social interactions, and restricted stereotypical behaviors. Several immune cells are associated with immune dysfunction in ASD; however, IL-31 has not been explored in ASD. This study aims to investigate the role of inflammatory cytokines and transcription factors of the CXCR1 cells in children with ASD. In the current study, we investigated the cytokines and transcription factors produced by CXCR1+ cells (IL-31, IL-9, IL-21R, IL-21, NF-κB p65, RORγT, STAT1, and FoxP3) in peripheral blood mononuclear cells (PBMCs), from children with ASD and typically developing (TD) control children, using flow cytometric analysis. In addition, we measured mRNA and protein expression levels of IL-31 using quantitative real-time PCR and western blot analyses in PBMCs. In our study, children with ASD had increased CXCR1+IL-31+, CXCR1+IL-9+, CXCR1+IL-21R+, CXCR1+IL-21+, CXCR1+NF-κB+ p65, CXCR1+RORγT+, and CXCR1+STAT1+, and decreased CXCR1+FoxP3+ cells as compared with cells from the TD control samples. Similarly, children with ASD showed increased IL-31 mRNA and protein expression levels as compared to those of TD control samples. Our results suggest that upregulated production of inflammatory cytokines and transcription factors in CXCR1+ cells cause immunological imbalance in children with ASD. Therefore, attenuation of inflammatory cytokines/mediators and transcription factors could have a therapeutic potential in the treatment of ASD.
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Millot P, San C, Bennana E, Porte B, Vignal N, Hugon J, Paquet C, Hosten B, Mouton-Liger F. STAT3 inhibition protects against neuroinflammation and BACE1 upregulation induced by systemic inflammation. Immunol Lett 2020; 228:129-134. [PMID: 33096140 DOI: 10.1016/j.imlet.2020.10.004] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 10/03/2020] [Accepted: 10/10/2020] [Indexed: 02/07/2023]
Abstract
Abnormal activation of the transcriptional factor STAT3 (signal transducer and activator of transcription 3) was recently associated with Alzheimer Disease (AD). STAT3 phosphorylation is critical for cytokine secretion linked to neuroinflammation. Moreover, STAT3 may act as a transcriptional regulator of BACE1 (β-APP cleaving enzyme-1), the key enzyme in amyloid β (Aβ) production. We have previously shown that neuroinflammation and increased brain BACE1 levels triggered by LPS-induced systemic inflammation in wild-type mice are associated with an enhanced STAT3 activation. Using this LPS model, the goal of this study was to investigate if a STAT3 inhibitor administration could be protective against neuroinflammation and abnormal BACE1 regulation. Our results show that intraperitoneal injection of Stattic, a molecule that selectively inhibits the activation of STAT3, decreases LPS-induced microglial activation in the hippocampus. In addition, STAT3 inhibition reduced brain levels of cytokines IL-6, IL-1β and TNF-α triggered by LPS systemic administration. A significant reduction of BACE1 levels was observed in the hippocampus of mice treated with LPS and Stattic compared to those exposed to LPS alone. Taking together, our results show that Stattic can protect hippocampus against two pathological hallmarks of AD, and pave the way for further explorations of the therapeutic potential of STAT3 inhibition in AD.
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Affiliation(s)
- Périne Millot
- INSERM U1144 Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, Paris, France; Centre de Neurologie Cognitive/CMRR Paris Nord Ile de France, APHP Nord Université de Paris, Lariboisière Hospital, Paris, France
| | - Carine San
- INSERM U1144 Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, Paris, France; Unité Claude Kellershohn, Institut de Recherche Saint-Louis, APHP. Nord Université de Paris, SaintLouis Hospital, Paris, France
| | - Evangeline Bennana
- INSERM U1144 Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, Paris, France; Centre de Neurologie Cognitive/CMRR Paris Nord Ile de France, APHP Nord Université de Paris, Lariboisière Hospital, Paris, France
| | - Baptiste Porte
- INSERM U1144 Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, Paris, France; Centre de Neurologie Cognitive/CMRR Paris Nord Ile de France, APHP Nord Université de Paris, Lariboisière Hospital, Paris, France
| | - Nicolas Vignal
- INSERM U1144 Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, Paris, France; Unité Claude Kellershohn, Institut de Recherche Saint-Louis, APHP. Nord Université de Paris, SaintLouis Hospital, Paris, France; Unité Claude Kellershohn, Institut de Recherche Saint-Louis, APHP. Nord Université de Paris, Lariboisière Hospital, Paris, France
| | - Jacques Hugon
- INSERM U1144 Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, Paris, France; Centre de Neurologie Cognitive/CMRR Paris Nord Ile de France, APHP Nord Université de Paris, Lariboisière Hospital, Paris, France
| | - Claire Paquet
- INSERM U1144 Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, Paris, France; Centre de Neurologie Cognitive/CMRR Paris Nord Ile de France, APHP Nord Université de Paris, Lariboisière Hospital, Paris, France
| | - Benoit Hosten
- INSERM U1144 Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, Paris, France; Unité Claude Kellershohn, Institut de Recherche Saint-Louis, APHP. Nord Université de Paris, SaintLouis Hospital, Paris, France
| | - François Mouton-Liger
- INSERM U1144 Optimisation Thérapeutique en Neuropsychopharmacologie, Université de Paris, Paris, France; Centre de Neurologie Cognitive/CMRR Paris Nord Ile de France, APHP Nord Université de Paris, Lariboisière Hospital, Paris, France.
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Pinto B, Morelli G, Rastogi M, Savardi A, Fumagalli A, Petretto A, Bartolucci M, Varea E, Catelani T, Contestabile A, Perlini LE, Cancedda L. Rescuing Over-activated Microglia Restores Cognitive Performance in Juvenile Animals of the Dp(16) Mouse Model of Down Syndrome. Neuron 2020; 108:887-904.e12. [PMID: 33027640 PMCID: PMC7736620 DOI: 10.1016/j.neuron.2020.09.010] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 07/16/2020] [Accepted: 09/04/2020] [Indexed: 01/01/2023]
Abstract
Microglia are brain-resident immune cells and regulate mechanisms essential for cognitive functions. Down syndrome (DS), the most frequent cause of genetic intellectual disability, is caused by a supernumerary chromosome 21, containing also genes related to the immune system. In the hippocampus of the Dp(16) mouse model of DS and DS individuals, we found activated microglia, as assessed by their morphology; activation markers; and, for DS mice, electrophysiological profile. Accordingly, we found increased pro-inflammatory cytokine levels and altered interferon signaling in Dp(16) hippocampi. DS mice also showed decreased spine density and activity of hippocampal neurons and hippocampus-dependent cognitive behavioral deficits. Depletion of defective microglia or treatment with a commonly used anti-inflammatory drug rescued the neuronal spine and activity impairments and cognitive deficits in juvenile Dp(16) mice. Our results suggest an involvement of microglia in Dp(16)-mouse cognitive deficits and identify a new potential therapeutic approach for cognitive disabilities in DS individuals. DS mice display microglia alterations and cognitive impairment Depletion of microglia rescues cognitive impairment in DS mice Acetaminophen treatment rescues microglia and cognitive impairments in DS mice Brain samples of DS people recapitulate microglia alterations observed in DS mice
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Affiliation(s)
- Bruno Pinto
- BIO@SNS, Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126 Pisa, Italy; Brain Development and Disease Laboratory, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy
| | - Giovanni Morelli
- Brain Development and Disease Laboratory, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy
| | - Mohit Rastogi
- Brain Development and Disease Laboratory, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy
| | - Annalisa Savardi
- Brain Development and Disease Laboratory, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy
| | - Amos Fumagalli
- Brain Development and Disease Laboratory, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy
| | - Andrea Petretto
- Core Facilities - Clinical Proteomics and Metabolomics, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Martina Bartolucci
- Core Facilities - Clinical Proteomics and Metabolomics, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Emilio Varea
- Cellular Biology Department, University of Valencia, Valencia, Spain
| | - Tiziano Catelani
- Electron Microscopy Facility, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy
| | - Andrea Contestabile
- Brain Development and Disease Laboratory, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy
| | - Laura E Perlini
- Brain Development and Disease Laboratory, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy
| | - Laura Cancedda
- Brain Development and Disease Laboratory, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy; Dulbecco Telethon Institute, Rome, Italy.
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Altered Expression of Long Non-coding RNAs in Peripheral Blood Mononuclear Cells of Patients with Alzheimer’s Disease. Mol Neurobiol 2020; 57:5352-5361. [DOI: 10.1007/s12035-020-02106-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 08/27/2020] [Indexed: 02/07/2023]
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124
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Flores-Dorantes MT, Díaz-López YE, Gutiérrez-Aguilar R. Environment and Gene Association With Obesity and Their Impact on Neurodegenerative and Neurodevelopmental Diseases. Front Neurosci 2020; 14:863. [PMID: 32982666 PMCID: PMC7483585 DOI: 10.3389/fnins.2020.00863] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Accepted: 07/24/2020] [Indexed: 12/12/2022] Open
Abstract
Obesity is a multifactorial disease in which environmental conditions and several genes play an important role in the development of this disease. Obesity is associated with neurodegenerative diseases (Alzheimer, Parkinson, and Huntington diseases) and with neurodevelopmental diseases (autism disorder, schizophrenia, and fragile X syndrome). Some of the environmental conditions that lead to obesity are physical activity, alcohol consumption, socioeconomic status, parent feeding behavior, and diet. Interestingly, some of these environmental conditions are shared with neurodegenerative and neurodevelopmental diseases. Obesity impairs neurodevelopment abilities as memory and fine-motor skills. Moreover, maternal obesity affects the cognitive function and mental health of the offspring. The common biological mechanisms involved in obesity and neurodegenerative/neurodevelopmental diseases are insulin resistance, pro-inflammatory cytokines, and oxidative damage, among others, leading to impaired brain development or cell death. Obesogenic environmental conditions are not the only factors that influence neurodegenerative and neurodevelopmental diseases. In fact, several genes implicated in the leptin-melanocortin pathway (LEP, LEPR, POMC, BDNF, MC4R, PCSK1, SIM1, BDNF, TrkB, etc.) are associated with obesity and neurodegenerative and neurodevelopmental diseases. Moreover, in the last decades, the discovery of new genes associated with obesity (FTO, NRXN3, NPC1, NEGR1, MTCH2, GNPDA2, among others) and with neurodegenerative or neurodevelopmental diseases (APOE, CD38, SIRT1, TNFα, PAI-1, TREM2, SYT4, FMR1, TET3, among others) had opened new pathways to comprehend the common mechanisms involved in these diseases. In conclusion, the obesogenic environmental conditions, the genes, and the interaction gene-environment would lead to a better understanding of the etiology of these diseases.
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Affiliation(s)
- María Teresa Flores-Dorantes
- Laboratorio de Biología Molecular y Farmacogenómica, Centro de Investigación de Ciencia y Tecnología Aplicada de Tabasco, División Académica de Ciencias Básicas, Universidad Juárez Autónoma de Tabasco, Villahermosa, Mexico
| | - Yael Efren Díaz-López
- Laboratorio de Enfermedades Metabólicas: Obesidad y Diabetes, Hospital Infantil de México “Federico Gómez,”Mexico City, Mexico
- División de Investigación, Facultad de Medicina, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico
| | - Ruth Gutiérrez-Aguilar
- Laboratorio de Enfermedades Metabólicas: Obesidad y Diabetes, Hospital Infantil de México “Federico Gómez,”Mexico City, Mexico
- División de Investigación, Facultad de Medicina, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico
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125
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Angelopoulou E, Paudel YN, Shaikh MF, Piperi C. Fractalkine (CX3CL1) signaling and neuroinflammation in Parkinson’s disease: Potential clinical and therapeutic implications. Pharmacol Res 2020; 158:104930. [DOI: 10.1016/j.phrs.2020.104930] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 04/16/2020] [Accepted: 05/12/2020] [Indexed: 12/14/2022]
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126
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T cell infiltration in both human multiple system atrophy and a novel mouse model of the disease. Acta Neuropathol 2020; 139:855-874. [PMID: 31993745 PMCID: PMC7181566 DOI: 10.1007/s00401-020-02126-w] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 12/20/2019] [Accepted: 01/07/2020] [Indexed: 12/13/2022]
Abstract
Multiple system atrophy (MSA) is a progressive neurodegenerative disorder characterized by abnormal accumulation of alpha-synuclein (α-syn) in oligodendrocytes accompanied by inflammation, demyelination, and subsequent synapse and neuronal loss. Little is known about the mechanisms of neurodegeneration in MSA. However, recent work has highlighted the important role of the immune system to the pathophysiology of other synuclein-related diseases such as Parkinson’s disease. In this study, we investigated postmortem brain tissue from MSA patients and control subjects for evidence of immune activation in the brain. We found a significant increase of HLA-DR+ microglia in the putamen and substantia nigra of MSA patient tissue compared to controls, as well as significant increases in CD3+, CD4+, and CD8+ T cells in these same brain regions. To model MSA in vivo, we utilized a viral vector that selectively overexpresses α-syn in oligodendrocytes (Olig001-SYN) with > 95% tropism in the dorsal striatum of mice, resulting in demyelination and neuroinflammation similar to that observed in human MSA. Oligodendrocyte transduction with this vector resulted in a robust inflammatory response, which included increased MHCII expression on central nervous system (CNS) resident microglia, and infiltration of pro-inflammatory monocytes into the CNS. We also observed robust infiltration of CD4 T cells into the CNS and antigen-experienced CD4 T cells in the draining cervical lymph nodes. Importantly, genetic deletion of TCR-β or CD4 T cells attenuated α-syn-induced inflammation and demyelination in vivo. These results suggest that T cell priming and infiltration into the CNS are key mechanisms of disease pathogenesis in MSA, and therapeutics targeting T cells may be disease modifying.
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127
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Yuan Y, Li Z, Yang N, Han Y, Ji X, Han D, Wang X, Li Y, Liu T, Yuan F, He J, Liu Y, Ni C, Zou P, Wang G, Guo X, Zhou Y. Exosome α-Synuclein Release in Plasma May be Associated With Postoperative Delirium in Hip Fracture Patients. Front Aging Neurosci 2020; 12:67. [PMID: 32231560 PMCID: PMC7082759 DOI: 10.3389/fnagi.2020.00067] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Accepted: 02/25/2020] [Indexed: 01/24/2023] Open
Abstract
Background: Little is known about the underlying mechanisms of the similarities in the core features of postoperative delirium (POD) and α-synuclein (α-syn)-related cognitive disorders. We herein investigated associations between fluctuated levels of exosomal α-syn in the plasma and POD presentation in geriatric hip fracture patients. Methods: We conducted an observational, prospective, and 1:1 matched (on age older than 65, hip fracture diagnosis, American Society of Anesthesiologist’ (ASA) physical status, duration of surgery, and intraoperative bleeding) case-control study: POD cases and non-POD controls were selected from the overall cohort by using Confusion Assessment Method (CAM). Delirium severity was measured by the Memorial Delirium Assessment Scale (MDAS). Plasma exosome levels of α-syn were examined preoperatively and at the time that POD was diagnosed, by using an established immunocapture technology based on a putative brain-cell-specific marker. Circulating concentrations of interleukin-1β (IL-1β), interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α) were also determined. The relationship between α-syn levels and POD risk, as well as the association between α-syn and MDAS scores and plasma cytokines, were assessed. Results: POD incidence was 8.4% (17/202). Postoperative α-syn were either elevated or lowered. As primary outcome variables, the change of α-syn in POD patients was significantly higher than non-POD ones (21.0 ± 29.3 pg.ml−1 vs.1.9 ± 20.0, P = 0.047). The α-syn alteration was positively correlated to MDAS (r = 0.436, P = 0.010) and the change of IL-6 (r = 0.383, P = 0.025). Conclusions: Exosome α-syn release in plasma may be associated with the POD development which might be due to systemic inflammation. Clinical Trial Registration: www.clinicaltrials.gov, identifier ChiCTR-IPR-17012301. Prior Presentation: The abstract of this work has been selected for presentation in the 2019 ANESTHESIOLOGY Journal Symposium “What’s New with the old,” and it has been present in the ASA 2019 annual meeting October 21st, 2019 in Florida.
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Affiliation(s)
- Yi Yuan
- Department of Anesthesiology, Peking University Third Hospital, Beijing, China.,Department of Anesthesiology, Beijing Jishuitan Hospital, Beijing, China
| | - Zhengqian Li
- Department of Anesthesiology, Peking University Third Hospital, Beijing, China
| | - Ning Yang
- Department of Anesthesiology, Peking University Third Hospital, Beijing, China
| | - Yongzheng Han
- Department of Anesthesiology, Peking University Third Hospital, Beijing, China
| | - Xiaojuan Ji
- Department of Cadre Health Care, Beijing Jishuitan Hospital, Beijing, China
| | - Dengyang Han
- Department of Anesthesiology, Peking University Third Hospital, Beijing, China
| | - Xiaoxiao Wang
- Research Center of Clinical Epidemiology, Peking University Third Hospital, Beijing, China
| | - Yue Li
- Department of Anesthesiology, Peking University Third Hospital, Beijing, China
| | - Taotao Liu
- Department of Anesthesiology, Peking University Third Hospital, Beijing, China
| | - Feng Yuan
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Synthetic and Functional Biomolecules Center, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Jindan He
- Department of Anesthesiology, Peking University Third Hospital, Beijing, China
| | - Yajie Liu
- Department of Anesthesiology, Peking University Third Hospital, Beijing, China
| | - Cheng Ni
- Department of Anesthesiology, Peking University Third Hospital, Beijing, China
| | - Peng Zou
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Synthetic and Functional Biomolecules Center, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Geng Wang
- Department of Anesthesiology, Beijing Jishuitan Hospital, Beijing, China
| | - Xiangyang Guo
- Department of Anesthesiology, Peking University Third Hospital, Beijing, China
| | - Yang Zhou
- Department of Anesthesiology, Peking University Third Hospital, Beijing, China
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128
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Hong Q, Yang Y, Wang Z, Xu L, Yan Z. Longxuetongluo capsule alleviates lipopolysaccharide-induced neuroinflammation by regulating multiple signaling pathways in BV2 microglia cells. J Chin Med Assoc 2020; 83:255-265. [PMID: 32134862 DOI: 10.1097/jcma.0000000000000258] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Longxuetongluo capsule (LTC), derived from the total phenolic compounds of Chinese dragon's blood, is now used in the treatment of ischemic stroke in convalescence. The aim of this study is to explore the neuroprotective effect of LTC from the perspective of neuroinflammation. METHODS Cell viability and lactate dehydrogenase (LDH) release were measured by 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium (MTS) and LDH assay kit. Proinflammatory mediators and cytokines production including Nitric Oxide (NO), prostaglandin E2, (PGE2), interleukin (IL-β), IL-6, and tumor necrosis factor-α (TNF-α) were detected by enzyme-linked immunosorbent assay (ELISA) assay. In addition, western blot was used to detect the expression of inflammatory proteins associated with the mitogen-activated protein kinases (MAPKs), janus kinase/signal transducer and activator of tranions (JAK/STAT), nuclear transcription factor κB (NF-κB), and nuclear factor erythroid-2-related actor 2/heme oxygenase 1 (Nrf2/HO-1) signaling pathways. Moreover, immunofluorescence assay and electrophoretic mobility shift assays (EMSA) were performed to determine the Nrf2 translocation and the binding-DNA activity of NF-κB, respectively. RESULTS LTC at 0.5 to 2 μg/mL significantly increased cell viability and decreased LDH, NO, PGE2, IL-1β, IL-6, and TNF-α production in oxygen-glucose deprivation/reoxygenation (OGD/R) and lipopolysaccharide (LPS)-induced BV2 microglia cells. Meanwhile, LTC not only decreased the protein expressions of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2) but also down-regulated phosphorylation of extracellular signal-regulated kinase (ERK)1/2, p38, and up-regulated HO-1 expression via nuclear translocation of Nrf2. LTC can significantly inhibit the phosphorylation of JAK1/STAT3 and reduce the translocation of NF-κB from cytosol to nucleus as well as the binding-DNA activity. PC12 cell pretreated with LTC-condition medium (CM) significantly alleviated LPS-induced neurotoxicity and increased PC12 cell viability in a dose-dependent manner. CONCLUSION The present study showed that LTC exhibited a strong antineuroinflammatory activity and neuroprotective effects on LPS-stimulated BV2 microglial cells and PC12 cells.
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Affiliation(s)
- Qian Hong
- The 71st Group Army Hospital of CPLA Army (Affiliated Huaihai Hospital of Xuzhou Medical University), Xuzhou, China
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129
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Sarkar S, Dammer EB, Malovic E, Olsen AL, Raza SA, Gao T, Xiao H, Oliver DL, Duong D, Joers V, Seyfried N, Huang M, Kukar T, Tansey MG, Kanthasamy AG, Rangaraju S. Molecular Signatures of Neuroinflammation Induced by αSynuclein Aggregates in Microglial Cells. Front Immunol 2020; 11:33. [PMID: 32082315 PMCID: PMC7006296 DOI: 10.3389/fimmu.2020.00033] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 01/08/2020] [Indexed: 12/25/2022] Open
Abstract
Alpha-synuclein (αSynAgg) are pathological hallmarks of Parkinson's disease (PD) and other synucleinopathies that induce microglial activation and immune-mediated neurotoxicity, but the molecular mechanisms of αSynAgg-induced immune activation are poorly defined. We performed quantitative proteomics by mass spectrometry coupled with PCR, immunohistochemical and functional validations studies to define the molecular characteristics of alpha synuclein mediated microglial activation. In mouse microglia, αSynAgg induced robust pro-inflammatory activation (increased expression of 864 genes including Irg1, Ifit1, and Pyhin) and increased nuclear proteins involved in RNA synthesis, splicing, and anti-viral defense mechanisms. Conversely, αSynAgg decreased expression several proteins (including Cdc123, Sod1, and Grn), which were predominantly cytosolic and involved in metabolic, proteasomal and lysosomal mechanisms. Pathway analyses and confirmatory in vitro studies suggested that αSynAgg partly mediates its effects via Stat3 activation. As predicted by our proteomic findings, we verified that αSynAgg induces mitochondrial dysfunction in microglia. Twenty-six proteins differentially expressed by αSynAgg were also identified as PD risk genes in genome-wide association studies (upregulated: Brd2, Clk1, Siglec1; down-regulated: Memo1, Arhgap18, Fyn, and Pgrn/Grn). We validated progranulin (PGRN) as a lysosomal PD-associated protein that is downregulated by αSynAgg in microglia in-vivo and is expressed by microglia in post-mortem PD brain, congruent with our in vitro findings. Conclusion: Together, proteomics approach both reveals novel molecular insights into αSyn-mediated neuroinflammation in PD and other synucleinopathies.
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Affiliation(s)
- Souvarish Sarkar
- Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, United States.,Department of Biomedical Sciences, Iowa State University, Ames, IA, United States
| | - Eric B Dammer
- Department of Biochemistry, Emory University, Atlanta, GA, United States
| | - Emir Malovic
- Department of Biomedical Sciences, Iowa State University, Ames, IA, United States
| | - Abby L Olsen
- Department of Neurology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, United States
| | - Syed Ali Raza
- Department of Neurology, Emory University, Atlanta, GA, United States
| | - Tianwen Gao
- Department of Neurology, Emory University, Atlanta, GA, United States
| | - Hailian Xiao
- Department of Neurology, Emory University, Atlanta, GA, United States
| | - Danielle L Oliver
- Department of Neuroscience, University of Florida College of Medicine, Gainesville, FL, United States
| | - Duc Duong
- Department of Biochemistry, Emory University, Atlanta, GA, United States
| | - Valerie Joers
- Department of Neuroscience, University of Florida College of Medicine, Gainesville, FL, United States
| | - Nicholas Seyfried
- Department of Biochemistry, Emory University, Atlanta, GA, United States.,Department of Neurology, Emory University, Atlanta, GA, United States
| | - Meixiang Huang
- Department of Pharmacology and Chemical Biology, Emory University, Atlanta, GA, United States
| | - Thomas Kukar
- Department of Neurology, Emory University, Atlanta, GA, United States.,Department of Pharmacology and Chemical Biology, Emory University, Atlanta, GA, United States
| | - Malú G Tansey
- Department of Neuroscience, University of Florida College of Medicine, Gainesville, FL, United States
| | | | - Srikant Rangaraju
- Department of Neurology, Emory University, Atlanta, GA, United States
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130
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Hu Y, Zhang K, Zhang T, Wang J, Chen F, Qin W, Tong W, Guan Q, He Y, Gu C, Chen X, Kang UJ, Sun YE, Li S, Jin L. Exercise Reverses Dysregulation of T-Cell-Related Function in Blood Leukocytes of Patients With Parkinson's Disease. Front Neurol 2020; 10:1389. [PMID: 32047471 PMCID: PMC6997272 DOI: 10.3389/fneur.2019.01389] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 12/17/2019] [Indexed: 01/11/2023] Open
Abstract
Parkinson's disease (PD) is a common neurodegenerative disease with movement and balance impairments. Although studies have reported improvement of motor symptoms with physical exercise, the mechanisms by which exercise is beneficial remains poorly understood. Our study addresses the exercise-induced changes to peripheral immune cells by interrogating the transcriptome of blood-derived leukocytes in PD patients before and after exercise. Patients attended 1 h exercise classes twice a week for 12 weeks. Leukocytes were collected at the beginning and end of the study for gene expression analysis by RNA-seq or quantitative real-time PCR. We correlated differentially expressed genes after exercise with clinical measures and analyzed the potential functions of gene changes with Kyoto Encyclopedia of Genes and Genomes pathway and Gene Ontology analysis. Exercise improved measures of movement and balance when compared with scores before the exercise program. Among the gene changes, Kyoto Encyclopedia of Genes and Genomes and Gene Ontology analysis suggests that T-cell receptor signaling, T-cell activation, and T-cell migration pathways were downregulated, while the T-cell receptor signaling pathway was the most significantly correlated with clinical measures. To further investigate T-cell-related changes in PD leukocytes, we reanalyzed the differentially expressed genes from publicly available microarray data and found that genes in the T-cell activation, differentiation, and migration pathways were upregulated in PD samples compared to controls in a time-dependent manner. Together, our findings suggest that exercise rehabilitation may improve movement and balance in PD patients by reversing the upregulated T-cell activation pathways associated with PD. This study was registered with the Chinese Clinical Trial Registry under ChiCTR-TRC-14004707. Registered on May 27, 2014.
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Affiliation(s)
- Yong Hu
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
- Department of Neurology, Department of Neuroscience and Physiology, NYU Langone Health, The Marlene and Paolo Fresco Institute for Parkinson's and Movement Disorders, Neuroscience Institute, New York, NY, United States
| | - Kunshan Zhang
- Stem Cell Translational Research Center, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Tianyu Zhang
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Junbang Wang
- Stem Cell Translational Research Center, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Fei Chen
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Wenting Qin
- Department of Spine Surgery, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Weifang Tong
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Qiang Guan
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yijing He
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Chunya Gu
- Department of Spine Surgery, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xiaoyu Chen
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Un Jung Kang
- Department of Neurology, Department of Neuroscience and Physiology, NYU Langone Health, The Marlene and Paolo Fresco Institute for Parkinson's and Movement Disorders, Neuroscience Institute, New York, NY, United States
| | - Yi E. Sun
- Stem Cell Translational Research Center, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Siguang Li
- Stem Cell Translational Research Center, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Lingjing Jin
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
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Carr RM, Romecin Duran PA, Tolosa EJ, Ma C, Oseini AM, Moser CD, Banini BA, Huang J, Asumda F, Dhanasekaran R, Graham RP, Toruner MD, Safgren SL, Almada LL, Wang S, Patnaik MM, Roberts LR, Fernandez-Zapico ME. The extracellular sulfatase SULF2 promotes liver tumorigenesis by stimulating assembly of a promoter-looping GLI1-STAT3 transcriptional complex. J Biol Chem 2020; 295:2698-2712. [PMID: 31988246 DOI: 10.1074/jbc.ra119.011146] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 01/11/2020] [Indexed: 12/15/2022] Open
Abstract
The expression of the extracellular sulfatase SULF2 has been associated with increased hepatocellular carcinoma (HCC) growth and poor patient survival. However, the molecular mechanisms underlying SULF2-associated tumor growth remain unclear. To address this gap, here we developed a transgenic mouse overexpressing Sulf2 in hepatocytes under the control of the transthyretin promoter. In this model, Sulf2 overexpression potentiated diethylnitrosamine-induced HCC. Further analysis indicated that the transcription factor GLI family zinc finger 1 (GLI1) mediates Sulf2 expression during HCC development. A cross of the Sulf2-overexpressing with Gli1-knockout mice revealed that Gli1 inactivation impairs SULF2-induced HCC. Transcriptomic analysis revealed that Sulf2 overexpression is associated with signal transducer and activator of transcription 3 (STAT3)-specific gene signatures. Interestingly, the Gli1 knockout abrogated SULF2-mediated induction of several STAT3 target genes, including suppressor of cytokine signaling 2/3 (Socs2/3); Pim-1 proto-oncogene, Ser/Thr kinase (Pim1); and Fms-related tyrosine kinase 4 (Flt4). Human orthologs were similarly regulated by SULF2, dependent on intact GLI1 and STAT3 functions in HCC cells. SULF2 overexpression promoted a GLI1-STAT3 interaction and increased GLI1 and STAT3 enrichment at the promoters of their target genes. Interestingly, the SULF2 overexpression resulted in GLI1 enrichment at select STAT3 consensus sites, and vice versa. siRNA-mediated STAT3 or GLI1 knockdown reduced promoter binding of GLI1 and STAT3, respectively. Finally, chromatin-capture PCR confirmed long-range co-regulation of SOCS2 and FLT3 through changes in promoter conformation. These findings define a mechanism whereby SULF2 drives HCC by stimulating formation of a GLI1-STAT3 transcriptional complex.
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Affiliation(s)
- Ryan M Carr
- Schulze Center for Novel Therapeutics, Mayo Clinic, Rochester, Minnesota 55902
| | | | - Ezequiel J Tolosa
- Schulze Center for Novel Therapeutics, Mayo Clinic, Rochester, Minnesota 55902
| | - Chenchao Ma
- Division of Gastroenterology and Hepatology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota 55902
| | - Abdul M Oseini
- Division of Gastroenterology and Hepatology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota 55902
| | - Catherine D Moser
- Division of Gastroenterology and Hepatology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota 55902
| | - Bubu A Banini
- Division of Gastroenterology and Hepatology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota 55902
| | - Jianbo Huang
- Division of Gastroenterology and Hepatology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota 55902
| | - Faizal Asumda
- Division of Gastroenterology and Hepatology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota 55902
| | - Renumathy Dhanasekaran
- Division of Gastroenterology and Hepatology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota 55902
| | - Rondell P Graham
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota 55902
| | - Merih D Toruner
- Schulze Center for Novel Therapeutics, Mayo Clinic, Rochester, Minnesota 55902
| | - Stephanie L Safgren
- Schulze Center for Novel Therapeutics, Mayo Clinic, Rochester, Minnesota 55902
| | - Luciana L Almada
- Schulze Center for Novel Therapeutics, Mayo Clinic, Rochester, Minnesota 55902
| | - Shaoqing Wang
- Division of Gastroenterology and Hepatology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota 55902
| | - Mrinal M Patnaik
- Division of Hematology, Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota 55905
| | - Lewis R Roberts
- Division of Gastroenterology and Hepatology, Mayo Clinic College of Medicine and Science, Rochester, Minnesota 55902.
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Heon-Roberts R, Nguyen ALA, Pshezhetsky AV. Molecular Bases of Neurodegeneration and Cognitive Decline, the Major Burden of Sanfilippo Disease. J Clin Med 2020; 9:jcm9020344. [PMID: 32012694 PMCID: PMC7074161 DOI: 10.3390/jcm9020344] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 01/20/2020] [Accepted: 01/22/2020] [Indexed: 12/13/2022] Open
Abstract
The mucopolysaccharidoses (MPS) are a group of diseases caused by the lysosomal accumulation of glycosaminoglycans, due to genetic deficiencies of enzymes involved in their degradation. MPS III or Sanfilippo disease, in particular, is characterized by early-onset severe, progressive neurodegeneration but mild somatic involvement, with patients losing milestones and previously acquired skills as the disease progresses. Despite being the focus of extensive research over the past years, the links between accumulation of the primary molecule, the glycosaminoglycan heparan sulfate, and the neurodegeneration seen in patients have yet to be fully elucidated. This review summarizes the current knowledge on the molecular bases of neurological decline in Sanfilippo disease. It emerges that this deterioration results from the dysregulation of multiple cellular pathways, leading to neuroinflammation, oxidative stress, impaired autophagy and defects in cellular signaling. However, many important questions about the neuropathological mechanisms of the disease remain unanswered, highlighting the need for further research in this area.
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Affiliation(s)
- Rachel Heon-Roberts
- Division of Medical Genetics, CHU Ste-Justine Research Centre, Montreal, QC H3T 1C5, Canada; (R.H.-R.); (A.L.A.N.)
- Department of Anatomy and Cell Biology, McGill University, Montreal, QC H3A 0C7, Canada
| | - Annie L. A. Nguyen
- Division of Medical Genetics, CHU Ste-Justine Research Centre, Montreal, QC H3T 1C5, Canada; (R.H.-R.); (A.L.A.N.)
- Department of Medicine, University of Montreal, Montreal, QC H3T 1J4, Canada
| | - Alexey V. Pshezhetsky
- Division of Medical Genetics, CHU Ste-Justine Research Centre, Montreal, QC H3T 1C5, Canada; (R.H.-R.); (A.L.A.N.)
- Department of Anatomy and Cell Biology, McGill University, Montreal, QC H3A 0C7, Canada
- Department of Paediatrics, University of Montreal, Montreal, QC H3T 1C5, Canada
- Correspondence: ; Tel.: +1-(514)-345-4931 (ext. 2736)
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133
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Xin P, Xu X, Deng C, Liu S, Wang Y, Zhou X, Ma H, Wei D, Sun S. The role of JAK/STAT signaling pathway and its inhibitors in diseases. Int Immunopharmacol 2020; 80:106210. [PMID: 31972425 DOI: 10.1016/j.intimp.2020.106210] [Citation(s) in RCA: 430] [Impact Index Per Article: 107.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 12/19/2019] [Accepted: 01/08/2020] [Indexed: 02/09/2023]
Abstract
The JAK/STAT signaling pathway is an universally expressed intracellular signal transduction pathway and involved in many crucial biological processes, including cell proliferation, differentiation, apoptosis, and immune regulation. It provides a direct mechanism for extracellular factors-regulated gene expression. Current researches on this pathway have been focusing on the inflammatory and neoplastic diseases and related drug. The mechanism of JAK/STAT signaling is relatively simple. However, the biological consequences of the pathway are complicated due to its crosstalk with other signaling pathways. In addition, there is increasing evidence indicates that the persistent activation of JAK/STAT signaling pathway is closely related to many immune and inflammatory diseases, yet the specific mechanism remains unclear. Therefore, it is necessary to study the detailed mechanisms of JAK/STAT signaling in disease formation to provide critical reference for clinical treatments of the diseases. In this review, we focus on the structure of JAKs and STATs, the JAK/STAT signaling pathway and its negative regulators, the associated diseases, and the JAK inhibitors for the clinical therapy.
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Affiliation(s)
- Ping Xin
- College of Pharmacy, Harbin Medical University-Daqing, Daqing 163319, China
| | - Xiaoyun Xu
- College of Pharmacy, Harbin Medical University-Daqing, Daqing 163319, China
| | - Chengjie Deng
- College of Pharmacy, Harbin Medical University-Daqing, Daqing 163319, China
| | - Shuang Liu
- College of Pharmacy, Harbin Medical University-Daqing, Daqing 163319, China
| | - Youzhi Wang
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Xuegang Zhou
- College of Pharmacy, Harbin Medical University-Daqing, Daqing 163319, China
| | - Hongxing Ma
- Clinical Laboratory Department, Najing Lishui People's Hospital, Zhongda Hospital Lishui Branch, Southeast University, Najing 211200, China
| | - Donghua Wei
- College of Pharmacy, Harbin Medical University-Daqing, Daqing 163319, China
| | - Shiqin Sun
- College of Pharmacy, Harbin Medical University-Daqing, Daqing 163319, China.
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134
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Mayne K, White JA, McMurran CE, Rivera FJ, de la Fuente AG. Aging and Neurodegenerative Disease: Is the Adaptive Immune System a Friend or Foe? Front Aging Neurosci 2020; 12:572090. [PMID: 33173502 PMCID: PMC7538701 DOI: 10.3389/fnagi.2020.572090] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 08/31/2020] [Indexed: 12/11/2022] Open
Abstract
Neurodegenerative diseases of the central nervous system (CNS) are characterized by progressive neuronal death and neurological dysfunction, leading to increased disability and a loss of cognitive or motor functions. Alzheimer's disease, Parkinson's disease and amyotrophic lateral sclerosis have neurodegeneration as a primary feature. However, in other CNS diseases such as multiple sclerosis, stroke, traumatic brain injury, and spinal cord injury, neurodegeneration follows another insult, such as demyelination or ischaemia. Although there are different primary causes to these diseases, they all share a hallmark of neuroinflammation. Neuroinflammation can occur through the activation of resident immune cells such as microglia, cells of the innate and adaptive peripheral immune system, meningeal inflammation and autoantibodies directed toward components of the CNS. Despite chronic inflammation being pathogenic in these diseases, local inflammation after insult can also promote endogenous regenerative processes in the CNS, which are key to slowing disease progression. The normal aging process in the healthy brain is associated with a decline in physiological function, a steady increase in levels of neuroinflammation, brain shrinkage, and memory deficits. Likewise, aging is also a key contributor to the progression and exacerbation of neurodegenerative diseases. As there are associated co-morbidities within an aging population, pinpointing the precise relationship between aging and neurodegenerative disease progression can be a challenge. The CNS has historically been considered an isolated, "immune privileged" site, however, there is mounting evidence that adaptive immune cells are present in the CNS of both healthy individuals and diseased patients. Adaptive immune cells have also been implicated in both the degeneration and regeneration of the CNS. In this review, we will discuss the key role of the adaptive immune system in CNS degeneration and regeneration, with a focus on how aging influences this crosstalk.
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Affiliation(s)
- Katie Mayne
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Science, Queen’s University Belfast, Belfast, United Kingdom
| | - Jessica A. White
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Science, Queen’s University Belfast, Belfast, United Kingdom
| | | | - Francisco J. Rivera
- Laboratory of Stem Cells and Neuroregeneration, Institute of Anatomy, Histology and Pathology, Faculty of Medicine, Universidad Austral de Chile, Valdivia, Chile
- Center for Interdisciplinary Studies on the Nervous System (CISNe), Universidad Austral de Chile, Valdivia, Chile
- Institute of Molecular Regenerative Medicine, Paracelsus Medical University, Salzburg, Austria
- Spinal Cord Injury and Tissue Regeneration Center Salzburg (SCI-TReCS), Paracelsus Medical University, Salzburg, Austria
| | - Alerie G. de la Fuente
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Science, Queen’s University Belfast, Belfast, United Kingdom
- *Correspondence: Alerie G. de la Fuente,
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135
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Wang RR, Liu B, Long W. Electroacupuncture alleviates neuropathic pain by modulating Th2 infiltration and inhibiting microglial activation in the spinal cord of rats with spared nerve injury. WORLD JOURNAL OF TRADITIONAL CHINESE MEDICINE 2020. [DOI: 10.4103/wjtcm.wjtcm_40_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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136
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Fan Y, Li J, Yang Q, Gong C, Gao H, Mao Z, Yuan X, Zhu S, Xue Z. Dysregulated Long Non-coding RNAs in Parkinson's Disease Contribute to the Apoptosis of Human Neuroblastoma Cells. Front Neurosci 2019; 13:1320. [PMID: 31920490 PMCID: PMC6923663 DOI: 10.3389/fnins.2019.01320] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 11/25/2019] [Indexed: 12/13/2022] Open
Abstract
The molecular mechanism underlying Parkinson's disease (PD), an increasingly common neurodegenerative disease, remains unclear. Long non-coding RNA (lncRNA) plays essential roles in gene expression and human diseases. We hypothesize that lncRNAs are involved in neuronal degeneration of PD. Using microarray, we identified 122 differentially expressed (DE) lncRNAs and 48 DE mRNAs between the circulating leukocytes from PD patients and healthy controls. There were 714 significant correlations (r ≥ 0.8 or ≤-0.8, p < 0.05) among the DE lncRNAs and mRNAs. Gene function and pathway analysis of the 48 DE mRNAs revealed biological pathways related to PD pathogenesis, including immune response, inflammatory response, MAPK, and Jak-STAT pathway. In a cohort of 72 PD patients and 22 healthy controls, the upregulation of four lncRNAs (AC131056.3-001, HOTAIRM1, lnc-MOK-6:1, and RF01976.1-201) in circulating leukocytes of PD patients were further confirmed. These lncRNAs were also upregulated in THP-1 cells, a human monocytic cell line, after inflammatory stimulation. Interestingly, the conditioned culture medium of THP-1 cells or 6-OHDA significantly increased the expression of these lncRNAs in SH-SY5Y cells, a human neuroblastoma cell line expressing dopaminergic markers. Importantly, overexpression of AC131056.3-001 or HOTAIRM1 increased baseline and 6-OHDA-induced apoptosis of SH-SY5Y cells. Taken together, we identified distinct expression profiles of lncRNA and mRNA in circulating leukocytes between PD patients and healthy controls. Dysregulated lncRNAs such as HOTAIRM1 and AC131056.3-001 may contribute to PD pathogenesis by promoting the apoptosis of dopaminergic neuron.
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Affiliation(s)
- Yun Fan
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jingyi Li
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qingmei Yang
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chengwu Gong
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Hongling Gao
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhijuan Mao
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiao Yuan
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Suiqiang Zhu
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zheng Xue
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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137
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Pei Y, Maitta RW. Alpha synuclein in hematopoiesis and immunity. Heliyon 2019; 5:e02590. [PMID: 31692680 PMCID: PMC6806402 DOI: 10.1016/j.heliyon.2019.e02590] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 09/13/2019] [Accepted: 10/02/2019] [Indexed: 12/15/2022] Open
Abstract
Parkinson's disease (PD) is the second most common neurodegenerative condition and intracellular deposition of Lewy bodies in the substantia nigra (SN), which can cause dopaminergic neuronal death, is the hallmark of this syndrome. α-synuclein (syn) is a small protein expressed mainly in neurons but can also be found in a number of tissues. It can be present as a soluble monomer under normal physiological conditions, but can be toxic in its oligomeric or fibrillary forms. Most of the available literature has focused on the effects of α-syn pathology in the mechanisms leading to PD. However, the normal functions of α-syn still remain to be fully elucidated. Notably, α-syn in the hematopoietic system seems to mediate important functions as indicated by anemia and incomplete cell maturation when this protein is absent. This review will summarize basic genetic and structural findings, and critical information that suggests an essential role of α-syn in the development and activation of the hematopoietic system and immunity.
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Affiliation(s)
- Yu Pei
- University Hospitals Cleveland Medical Center, Cleveland, OH, United States
| | - Robert W. Maitta
- University Hospitals Cleveland Medical Center, Cleveland, OH, United States
- Case Western Reserve University School of Medicine, Cleveland, OH, United States
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138
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Gorlé N, Vandenbroucke RE. Interferons: A molecular switch between damage and repair in ageing and Alzheimer's disease. Mech Ageing Dev 2019; 183:111148. [PMID: 31541624 DOI: 10.1016/j.mad.2019.111148] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 09/13/2019] [Accepted: 09/17/2019] [Indexed: 10/26/2022]
Abstract
Alzheimer's disease was first described over 100 years ago, yet it remains incurable and affects 44 million people worldwide. Traditionally, research has largely focused on the amyloid cascade hypothesis, but interest in the importance of inflammation in the progression of the disease has recently been increasing. Interferons, a large family of cytokines that trigger the immune system, are believed to play a crucial role in the pathology of Alzheimer's disease. This review focuses on how interferons affect the brain during ageing and whether they could be candidate therapeutic targets for the treatment of Alzheimer's disease.
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Affiliation(s)
- N Gorlé
- VIB Center for Inflammation Research, VIB, B-9052 Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, B-9052 Ghent, Belgium
| | - R E Vandenbroucke
- VIB Center for Inflammation Research, VIB, B-9052 Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, B-9052 Ghent, Belgium.
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139
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Wang M, Cheng L, Chen ZL, Mungur R, Xu SH, Wu J, Liu XL, Wan S. Hyperbaric oxygen preconditioning attenuates brain injury after intracerebral hemorrhage by regulating microglia polarization in rats. CNS Neurosci Ther 2019; 25:1126-1133. [PMID: 31411803 PMCID: PMC6776759 DOI: 10.1111/cns.13208] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Revised: 07/30/2019] [Accepted: 07/30/2019] [Indexed: 12/13/2022] Open
Abstract
AIMS Hyperbaric oxygen preconditioning (HBOP) attenuates brain edema, microglia activation, and inflammation after intracerebral hemorrhage (ICH). In this present study, we investigated the role of HBOP in ICH-induced microglia polarization and the potential involved signal pathway. METHODS Male Sprague-Dawley rats were divided into three groups: SHAM, ICH, and ICH + HBOP group. Before surgery, rats in SHAM and HBOP groups received HBO for 5 days. Rats in SHAM group received needle injection, while rats in ICH and ICH + HBOP groups received 100 μL autologous blood injection into the right basal ganglia. Rats were euthanized at 24 hours after ICH, and the brains were removed for immunohistochemistry and Western blotting. Neurological deficits and brain water content were determined. RESULTS Intracerebral hemorrhage induced brain edema, which was significantly lower in the HBOP group. The levels of MMP9 were also less in the HBOP group. HBO pretreatment resulted in less neuronal death and neurological deficits after ICH. Their immunoactivity and protein levels of M1 markers were downregulated, but the M2 markers were unchanged by HBOP. In addition, ICH-induced pro-inflammatory cytokine (TNF-α and IL-1β) levels and the phosphorylation of JNK and STAT1 were also lower in the HBOP rats. CONCLUSIONS HBO pretreatment attenuated ICH-induced brain injuries and MMP9 upregulation, which may through the inhibiting of M1 polarization of microglia and inflammatory signal pathways after ICH.
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Affiliation(s)
- Ming Wang
- Department of Neurosurgery, College of Medicine, The First Affiliated Hospital, Zhejiang University, Hangzhou, China
| | - Lin Cheng
- Brain Center, Zhejiang Hospital, Hangzhou, China
| | | | - Rajneesh Mungur
- Department of Neurosurgery, College of Medicine, The First Affiliated Hospital, Zhejiang University, Hangzhou, China
| | - Shan-Hu Xu
- Brain Center, Zhejiang Hospital, Hangzhou, China
| | - Jiong Wu
- Brain Center, Zhejiang Hospital, Hangzhou, China
| | - Xiao-Li Liu
- Brain Center, Zhejiang Hospital, Hangzhou, China
| | - Shu Wan
- Brain Center, Zhejiang Hospital, Hangzhou, China
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140
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Perner F, Perner C, Ernst T, Heidel FH. Roles of JAK2 in Aging, Inflammation, Hematopoiesis and Malignant Transformation. Cells 2019; 8:cells8080854. [PMID: 31398915 PMCID: PMC6721738 DOI: 10.3390/cells8080854] [Citation(s) in RCA: 127] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 08/05/2019] [Accepted: 08/06/2019] [Indexed: 12/22/2022] Open
Abstract
Clonal alterations in hematopoietic cells occur during aging and are often associated with the establishment of a subclinical inflammatory environment. Several age-related conditions and diseases may be initiated or promoted by these alterations. JAK2 mutations are among the most frequently mutated genes in blood cells during aging. The most common mutation within the JAK2 gene is JAK2-V617F that leads to constitutive activation of the kinase and thereby aberrant engagement of downstream signaling pathways. JAK2 mutations can act as central drivers of myeloproliferative neoplasia, a pre-leukemic and age-related malignancy. Likewise, hyperactive JAK-signaling is a hallmark of immune diseases and critically influences inflammation, coagulation and thrombosis. In this review we aim to summarize the current knowledge on JAK2 in clonal hematopoiesis during aging, the role of JAK-signaling in inflammation and lymphocyte biology and JAK2 function in age-related diseases and malignant transformation.
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Affiliation(s)
- Florian Perner
- Innere Medizin 2, Hämatologie und Onkologie, Universitätsklinikum Jena, 07747 Jena, Germany
- Leibniz-Institute on Aging-Fritz Lipmann Institute (FLI), 07745 Jena, Germany
- Dana-Farber Cancer Institute, Department of Pediatric Oncology, Harvard University, Boston, MA 02467, USA
| | - Caroline Perner
- Center for Immunology & Inflammatory Diseases, Massachusetts General Hospital, and Harvard Medical School, Boston, 02129 MA, USA
| | - Thomas Ernst
- Innere Medizin 2, Hämatologie und Onkologie, Universitätsklinikum Jena, 07747 Jena, Germany
| | - Florian H Heidel
- Innere Medizin 2, Hämatologie und Onkologie, Universitätsklinikum Jena, 07747 Jena, Germany.
- Leibniz-Institute on Aging-Fritz Lipmann Institute (FLI), 07745 Jena, Germany.
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141
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Xie J, Li Y, Dai J, He Y, Sun D, Dai C, Xu H, Yin ZQ. Olfactory Ensheathing Cells Grafted Into the Retina of RCS Rats Suppress Inflammation by Down-Regulating the JAK/STAT Pathway. Front Cell Neurosci 2019; 13:341. [PMID: 31402855 PMCID: PMC6670006 DOI: 10.3389/fncel.2019.00341] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Accepted: 07/11/2019] [Indexed: 01/23/2023] Open
Abstract
The inflammatory microenvironment in the retina plays a vital role in the pathogenesis and progression of retinitis pigmentosa (RP). Microglial inflammatory cytokines production leads to gliosis and apoptosis of retinal neurons, and ultimately, visual loss. Cell-based therapies using grafted olfactory ensheathing cells (OECs) have demonstrated modulation of degenerative microenvironments in the central nervous system (CNS), in a number of animal models. However, mechanisms by which grafted OECs can reduce degeneration in the retina are not well understood. In the present study, we set up an in vitro OEC/BV2 microglia co-culture system, and an in vivo royal college of surgeons (RCS) rat model, used cell transplantation, immunohistochemistry, RT-PCR, western blot to explore the mechanisms by which OECs affect expression of pro- or anti-inflammatory cytokines and polarization of M(IL-6) and M(Arg1) type microglial activation in the retina. We found that compared with the LPS (Lipopolysaccharide) and olfactory nerve fibroblast (ONF), the OEC and BV2 co-culture group modulate microglial cytokines releasing toward the anti-inflammation, and away from the pro-inflammation, which was followed by higher IL-4 and IL-10 and lower TNF-a and IL-6 in their expression levels. In vivo, the transplantation group significantly reduced activated resident microglia/infiltrated macrophage, and expression of pro-inflammatory cytokines in RCS rats retina, increased anti-inflammatory cytokines in transplantation area. Additionally, we found that OECs expressed SOCS3 and down-regulated the JAK2/STAT3 (Janus Kinase 2/Signal Transducer and Activator of Transcription 3) pathway. Thirdly, OEC transplantation reduced Caspase-3 expression, protected inner retinal neurons and photoreceptors and therefore, delayed the visual function degeneration. In conclusion, our data suggest that OECs delay retinal degeneration in RP, at least in part through immunomodulation of microglia via the JAK/STAT pathway.
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Affiliation(s)
- Jing Xie
- Southwest Eye Hospital, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China.,Key Laboratory of Visual Damage, Regeneration and Restoration of Chongqing, Chongqing, China
| | - Yijian Li
- Southwest Eye Hospital, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China.,Key Laboratory of Visual Damage, Regeneration and Restoration of Chongqing, Chongqing, China
| | - Jiaman Dai
- Southwest Eye Hospital, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China.,Key Laboratory of Visual Damage, Regeneration and Restoration of Chongqing, Chongqing, China
| | - Yan He
- Southwest Eye Hospital, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China.,Key Laboratory of Visual Damage, Regeneration and Restoration of Chongqing, Chongqing, China
| | - Dayu Sun
- Southwest Eye Hospital, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China.,Key Laboratory of Visual Damage, Regeneration and Restoration of Chongqing, Chongqing, China
| | - Chao Dai
- Southwest Eye Hospital, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China.,Key Laboratory of Visual Damage, Regeneration and Restoration of Chongqing, Chongqing, China
| | - Haiwei Xu
- Southwest Eye Hospital, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China.,Key Laboratory of Visual Damage, Regeneration and Restoration of Chongqing, Chongqing, China
| | - Zheng Qin Yin
- Southwest Eye Hospital, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China.,Key Laboratory of Visual Damage, Regeneration and Restoration of Chongqing, Chongqing, China
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142
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Anti-Inflammatory Activities of Marine Algae in Neurodegenerative Diseases. Int J Mol Sci 2019; 20:ijms20123061. [PMID: 31234555 PMCID: PMC6628294 DOI: 10.3390/ijms20123061] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 06/18/2019] [Accepted: 06/19/2019] [Indexed: 12/13/2022] Open
Abstract
Neuroinflammation is one of the main contributors to the onset and progression of neurodegenerative diseases such as Alzheimer’s and Parkinson’s diseases. Microglial and astrocyte activation is a brain defense mechanism to counteract harmful pathogens and damaged tissues, while their prolonged activation induces neuroinflammation that can trigger or exacerbate neurodegeneration. Unfortunately, to date there are no pharmacological therapies able to slow down or stop the progression of neurodegeneration. For this reason, research is turning to the identification of natural compounds with protective action against these diseases. Considering the important role of neuroinflammation in the onset and development of neurodegenerative pathologies, natural compounds with anti-inflammatory activity could be good candidates for developing effective therapeutic strategies. Marine organisms represent a huge source of natural compounds, and among them, algae are appreciated sources of important bioactive components such as antioxidants, proteins, vitamins, minerals, soluble dietary fibers, polyunsaturated fatty acids, polysaccharides, sterols, carotenoids, tocopherols, terpenes, phycobilins, phycocolloids, and phycocyanins. Recently, numerous anti-inflammatory compounds have been isolated from marine algae with potential protective efficacy against neuroinflammation. This review highlights the key inflammatory processes involved in neurodegeneration and the potential of specific compounds from marine algae to counteract neuroinflammation in the CNS.
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143
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Li XG, Hong XY, Wang YL, Zhang SJ, Zhang JF, Li XC, Liu YC, Sun DS, Feng Q, Ye JW, Gao Y, Ke D, Wang Q, Li HL, Ye K, Liu GP, Wang JZ. Tau accumulation triggers STAT1-dependent memory deficits by suppressing NMDA receptor expression. EMBO Rep 2019; 20:embr.201847202. [PMID: 31085626 DOI: 10.15252/embr.201847202] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Revised: 03/20/2019] [Accepted: 04/11/2019] [Indexed: 11/09/2022] Open
Abstract
Intracellular tau accumulation forming neurofibrillary tangles is hallmark pathology of Alzheimer's disease (AD), but how tau accumulation induces synapse impairment is elusive. By overexpressing human full-length wild-type tau (termed hTau) to mimic tau abnormality as seen in the brain of sporadic AD patients, we find that hTau accumulation activates JAK2 to phosphorylate STAT1 (signal transducer and activator of transcription 1) at Tyr701 leading to STAT1 dimerization, nuclear translocation, and its activation. STAT1 activation suppresses expression of N-methyl-D-aspartate receptors (NMDARs) through direct binding to the specific GAS element of GluN1, GluN2A, and GluN2B promoters, while knockdown of STAT1 by AAV-Cre in STAT1flox/flox mice or expressing dominant negative Y701F-STAT1 efficiently rescues hTau-induced suppression of NMDAR expression with amelioration of synaptic functions and memory performance. These findings indicate that hTau accumulation impairs synaptic plasticity through JAK2/STAT1-induced suppression of NMDAR expression, revealing a novel mechanism for hTau-associated synapse and memory deficits.
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Affiliation(s)
- Xiao-Guang Li
- Key Laboratory of Ministry of Education of China and Hubei Province for Neurological Disorders, Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Clinic Center of Human Gene Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiao-Yue Hong
- Key Laboratory of Ministry of Education of China and Hubei Province for Neurological Disorders, Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ya-Li Wang
- Key Laboratory of Ministry of Education of China and Hubei Province for Neurological Disorders, Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Key Laboratory for the Brain Research of Henan Province, Department of Physiology and Neurobiology, Xinxiang Medical University, Xinxiang, China
| | - Shu-Juan Zhang
- Key Laboratory of Ministry of Education of China and Hubei Province for Neurological Disorders, Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jun-Fei Zhang
- Key Laboratory of Ministry of Education of China and Hubei Province for Neurological Disorders, Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xia-Chun Li
- Key Laboratory of Ministry of Education of China and Hubei Province for Neurological Disorders, Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yan-Chao Liu
- Key Laboratory of Ministry of Education of China and Hubei Province for Neurological Disorders, Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Dong-Shen Sun
- Key Laboratory of Ministry of Education of China and Hubei Province for Neurological Disorders, Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qiong Feng
- Key Laboratory of Ministry of Education of China and Hubei Province for Neurological Disorders, Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jin-Wang Ye
- Key Laboratory of Ministry of Education of China and Hubei Province for Neurological Disorders, Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yuan Gao
- Key Laboratory of Ministry of Education of China and Hubei Province for Neurological Disorders, Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Dan Ke
- Key Laboratory of Ministry of Education of China and Hubei Province for Neurological Disorders, Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qun Wang
- Key Laboratory of Ministry of Education of China and Hubei Province for Neurological Disorders, Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hong-Lian Li
- Key Laboratory of Ministry of Education of China and Hubei Province for Neurological Disorders, Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Keqiang Ye
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Gong-Ping Liu
- Key Laboratory of Ministry of Education of China and Hubei Province for Neurological Disorders, Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China .,Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - Jian-Zhi Wang
- Key Laboratory of Ministry of Education of China and Hubei Province for Neurological Disorders, Department of Pathophysiology, School of Basic Medicine and the Collaborative Innovation Center for Brain Science, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China .,Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
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144
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Jin X, Liu MY, Zhang DF, Zhong X, Du K, Qian P, Gao H, Wei MJ. Natural products as a potential modulator of microglial polarization in neurodegenerative diseases. Pharmacol Res 2019; 145:104253. [PMID: 31059788 DOI: 10.1016/j.phrs.2019.104253] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 04/20/2019] [Accepted: 04/30/2019] [Indexed: 02/07/2023]
Abstract
Neurodegenerative diseases (NDs) are characterized by the progressive loss of structure and function of neurons most common in elderly population, mainly including Alzheimer's disease (AD), Parkinson's disease (PD), amyotrophic lateral sclerosis (ALS) and multiple sclerosis (MS). Neuroinflammation caused by microglia as the resident macrophages of the central nervous system (CNS) plays a contributory role in the onset and progression of NDs. Activated microglia, as in macrophages, to be heterogeneous, can polarize into M1 (pro-inflammatory) and M2 (anti-inflammatory) functional phenotypes. The former elaborate pro-inflammatory mediators promoting neuroinflammation and neuronal damage. In contrast, the latter generate anti-inflammatory mediators and neurotrophins that inhibit neuroinflammation and promote neuronal healing. Consistently, the regulation of microglial polarization from M1 to M2 phenotype appears as an outstanding therapeutic and preventive approach for NDs treatment. Although non-steroidal anti-inflammatory drugs (NSAIDs) currently used to alleviate M1 microglia-associated neuroinflammation responsible for the development of NDs, these drugs have different degrees of adverse effects and limited efficacy. As the advantages of novel structure, multi-target, high efficiency and low toxicity, natural products as the modulators of microglial polarization have attracted considerable concerns in the therapeutic areas of NDs. In this review, we mainly summarized the therapeutic potential of natural products and their various molecular mechanisms for NDs treatment through modulating microglial polarization. The aim of the current review is expected to be useful to develop innovative modulators of microglial polarization from natural products for the amelioration and treatment of NDs.
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Affiliation(s)
- Xin Jin
- Department of Pharmacognosy, School of Pharmacy, China Medical University, Shenyang, China
| | - Ming-Yan Liu
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China
| | - Dong-Fang Zhang
- Department of Pharmacognosy, School of Pharmacy, China Medical University, Shenyang, China
| | - Xin Zhong
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China
| | - Ke Du
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China
| | - Ping Qian
- Department of Pharmacognosy, School of Pharmacy, China Medical University, Shenyang, China
| | - Hua Gao
- Division of Pharmacology Laboratory, National Institutes for Food and Drug Control, Beijing, China
| | - Min-Jie Wei
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China; Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Shenyang, China.
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145
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Kanthasamy A, Jin H, Charli A, Vellareddy A, Kanthasamy A. Environmental neurotoxicant-induced dopaminergic neurodegeneration: a potential link to impaired neuroinflammatory mechanisms. Pharmacol Ther 2019; 197:61-82. [PMID: 30677475 PMCID: PMC6520143 DOI: 10.1016/j.pharmthera.2019.01.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
With the increased incidence of neurodegenerative diseases worldwide, Parkinson's disease (PD) represents the second-most common neurodegenerative disease. PD is a progressive multisystem neurodegenerative disorder characterized by a marked loss of nigrostriatal dopaminergic neurons and the formation of Lewy pathology in diverse brain regions. Although the mechanisms underlying dopaminergic neurodegeneration remain poorly characterized, data from animal models and postmortem studies have revealed that heightened inflammatory responses mediated via microglial and astroglial activation and the resultant release of proinflammatory factors may act as silent drivers of neurodegeneration. In recent years, numerous studies have demonstrated a positive association between the exposure to environmental neurotoxicants and the etiology of PD. Although it is unclear whether neuroinflammation drives pesticide-induced neurodegeneration, emerging evidence suggests that the failure to dampen neuroinflammatory mechanisms may account for the increased vulnerability to pesticide neurotoxicity. Furthermore, recent studies provide additional evidence that shifts the focus from a neuron-centric view to glial-associated neurodegeneration following pesticide exposure. In this review, we propose to summarize briefly the possible factors that regulate neuroinflammatory processes during environmental neurotoxicant exposure with a focus on the potential roles of mitochondria-driven redox mechanisms. In this context, a critical discussion of the data obtained from experimental research and possible epidemiological studies is included. Finally, we hope to provide insights on the pivotal role of exosome-mediated intercellular transmission of aggregated proteins in microglial activation response and the resultant dopaminergic neurodegeneration after exposure to pesticides. Collectively, an improved understanding of glia-mediated neuroinflammatory signaling might provide novel insights into the mechanisms that contribute to neurodegeneration induced by environmental neurotoxicant exposure.
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Affiliation(s)
- Arthi Kanthasamy
- Parkinson's Disorder Research Laboratory, Iowa Center for Advanced Neurotoxicology, Department of Biomedical Sciences, Iowa State University, Ames, IA 50011, USA.
| | - Huajun Jin
- Parkinson's Disorder Research Laboratory, Iowa Center for Advanced Neurotoxicology, Department of Biomedical Sciences, Iowa State University, Ames, IA 50011, USA
| | - Adhithiya Charli
- Parkinson's Disorder Research Laboratory, Iowa Center for Advanced Neurotoxicology, Department of Biomedical Sciences, Iowa State University, Ames, IA 50011, USA
| | - Anantharam Vellareddy
- Parkinson's Disorder Research Laboratory, Iowa Center for Advanced Neurotoxicology, Department of Biomedical Sciences, Iowa State University, Ames, IA 50011, USA
| | - Anumantha Kanthasamy
- Parkinson's Disorder Research Laboratory, Iowa Center for Advanced Neurotoxicology, Department of Biomedical Sciences, Iowa State University, Ames, IA 50011, USA
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146
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Fitzgerald E, Murphy S, Martinson HA. Alpha-Synuclein Pathology and the Role of the Microbiota in Parkinson's Disease. Front Neurosci 2019; 13:369. [PMID: 31068777 PMCID: PMC6491838 DOI: 10.3389/fnins.2019.00369] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Accepted: 04/01/2019] [Indexed: 01/23/2023] Open
Abstract
There is a principle in science, known as Occam’s razor, that says the correct solution is usually the one with the simplest explanation. The microbiota-gut-brain axis, an interdependent series of communication loops between the enteric nervous system (ENS), the microbiota, the gut, and the brain, offers important insight into how changes in our gut affect distant organs like our brains. The inherent complexity of this axis with the crosstalk between the immune system, inflammatory states, and the thousands of bacteria, viral, and fungal species that together make up the microbiota make studying the interactions that govern this axis difficult and far from parsimonious. It is becoming increasingly clear that the microbiota is integral to this axis. Disruption of the healthy flora, a phenomenon collectively referred to as dysbiosis, has been implicated as a driver for several diseases such as irritable bowel syndrome, rheumatoid arthritis, obesity, diabetes, liver disease, and neurological disorders such as depression, anxiety, and Parkinson’s disease (PD). Teasing apart these complex interactions as they pertain to PD is critical for our understanding of this debilitating disease, but more importantly, for the development of future treatments. So far, treatments have been unable to stop this neurodegenerative disease, succeeding only in briefly dampening symptoms and buying patients time before the inevitable loss of function ensues. Given that the 10 years prognosis for death or life-limiting disability with someone diagnosed with PD is upwards of 80%, there is a desperate need for curative treatments that go beyond symptom management. If PD does begin in the periphery with bidirectional communication between the microbiota and the immune system, as recent literature suggests, there is an exciting possibility that progression could be stopped before it reaches the brain. This systematic review assesses the current literature surrounding the role of the microbiota in the pathogenesis of alpha-synucleinopathies and explores the hypothesis that alpha-synuclein folding is modulated by the microbiota. Furthermore, we discuss how changes in the gut environment can lead to pathology and outline the implications that advances in understanding the interactions between host and microbiota will have on future research and the development of potential biomarkers.
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Affiliation(s)
- Emily Fitzgerald
- WWAMI School of Medical Education, University of Alaska Anchorage, Anchorage, AK, United States.,School of Medicine, University of Washington, Seattle, WA, United States
| | - Sarah Murphy
- WWAMI School of Medical Education, University of Alaska Anchorage, Anchorage, AK, United States
| | - Holly A Martinson
- WWAMI School of Medical Education, University of Alaska Anchorage, Anchorage, AK, United States
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147
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Zeuner KE, Schäffer E, Hopfner F, Brüggemann N, Berg D. Progress of Pharmacological Approaches in Parkinson's Disease. Clin Pharmacol Ther 2019; 105:1106-1120. [PMID: 30661251 DOI: 10.1002/cpt.1374] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Accepted: 12/22/2018] [Indexed: 12/20/2022]
Abstract
The progressive neurodegenerative process in Parkinson's disease (PD) is not restricted to dopaminergic midbrain neurons but involves the entire nervous system. In this review, we outline established treatment options at different disease stages and address new therapeutic approaches. These include, based on recent advances in the understanding of the pathophysiology of PD, genetic and disease-modifying approaches to reduce abnormal accumulation and aggregation of alpha-synuclein (aSYN), mitochondrial dysfunction, and dysfunction of lysosomal proteins. Moreover, we highlight clinical trials to reduce neuroinflammation and increase neurorestoration.
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Affiliation(s)
- Kirsten E Zeuner
- Department of Neurology, Christian-Albrechts-University Kiel, Kiel, Germany
| | - Eva Schäffer
- Department of Neurology, Christian-Albrechts-University Kiel, Kiel, Germany
| | - Franziska Hopfner
- Department of Psychiatry and Psychotherapy, Hospital of the University of Munich, Munich, Germany
| | - Norbert Brüggemann
- Department of Neurology, University of Lübeck, Lübeck, Germany.,Institute of Neurogenetics, University of Lübeck, Lübeck, Germany
| | - Daniela Berg
- Department of Neurology, Christian-Albrechts-University Kiel, Kiel, Germany
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148
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Smith AR, Smith RG, Pishva E, Hannon E, Roubroeks JAY, Burrage J, Troakes C, Al-Sarraj S, Sloan C, Mill J, van den Hove DL, Lunnon K. Parallel profiling of DNA methylation and hydroxymethylation highlights neuropathology-associated epigenetic variation in Alzheimer's disease. Clin Epigenetics 2019; 11:52. [PMID: 30898171 PMCID: PMC6429761 DOI: 10.1186/s13148-019-0636-y] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Accepted: 02/18/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Alzheimer's disease is a progressive neurodegenerative disorder that is hypothesized to involve epigenetic dysfunction. Previous studies of DNA modifications in Alzheimer's disease have been unable to distinguish between DNA methylation and DNA hydroxymethylation. DNA hydroxymethylation has been shown to be enriched in the human brain, although its role in Alzheimer's disease has not yet been fully explored. Here, we utilize oxidative bisulfite conversion, in conjunction with the Illumina Infinium Human Methylation 450K microarray, to identify neuropathology-associated differential DNA methylation and DNA hydroxymethylation in the entorhinal cortex. RESULTS We identified one experiment-wide significant differentially methylated position residing in the WNT5B gene. Next, we investigated pathology-associated regions consisting of multiple adjacent loci. We identified one significant differentially hydroxymethylated region consisting of four probes spanning 104 bases in the FBXL16 gene. We also identified two significant differentially methylated regions: one consisting of two probes in a 93 base-pair region in the ANK1 gene and the other consisting of six probes in a 99-base pair region in the ARID5B gene. We also highlighted three regions that show alterations in unmodified cytosine: two probes in a 39-base pair region of ALLC, two probes in a 69-base pair region in JAG2, and the same six probes in ARID5B that were differentially methylated. Finally, we replicated significant ANK1 disease-associated hypermethylation and hypohydroxymethylation patterns across eight CpG sites in an extended 118-base pair region in an independent cohort using oxidative-bisulfite pyrosequencing. CONCLUSIONS Our study represents the first epigenome-wide association study of both DNA methylation and hydroxymethylation in Alzheimer's disease entorhinal cortex. We demonstrate that previous estimates of DNA hypermethylation in ANK1 in Alzheimer's disease were underestimates as it is confounded by hypohydroxymethylation.
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Affiliation(s)
- Adam R Smith
- College of Medicine and Health, University of Exeter Medical School, Exeter University, RILD Building Level 4, Royal Devon and Exeter Hospital, Barrack Rd, Exeter, EX2 5DW, UK
| | - Rebecca G Smith
- College of Medicine and Health, University of Exeter Medical School, Exeter University, RILD Building Level 4, Royal Devon and Exeter Hospital, Barrack Rd, Exeter, EX2 5DW, UK
| | - Ehsan Pishva
- College of Medicine and Health, University of Exeter Medical School, Exeter University, RILD Building Level 4, Royal Devon and Exeter Hospital, Barrack Rd, Exeter, EX2 5DW, UK
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Eilis Hannon
- College of Medicine and Health, University of Exeter Medical School, Exeter University, RILD Building Level 4, Royal Devon and Exeter Hospital, Barrack Rd, Exeter, EX2 5DW, UK
| | - Janou A Y Roubroeks
- College of Medicine and Health, University of Exeter Medical School, Exeter University, RILD Building Level 4, Royal Devon and Exeter Hospital, Barrack Rd, Exeter, EX2 5DW, UK
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Joe Burrage
- College of Medicine and Health, University of Exeter Medical School, Exeter University, RILD Building Level 4, Royal Devon and Exeter Hospital, Barrack Rd, Exeter, EX2 5DW, UK
| | - Claire Troakes
- Institute of Psychiatry, King's College London, London, UK
| | - Safa Al-Sarraj
- Institute of Psychiatry, King's College London, London, UK
| | - Carolyn Sloan
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK
| | - Jonathan Mill
- College of Medicine and Health, University of Exeter Medical School, Exeter University, RILD Building Level 4, Royal Devon and Exeter Hospital, Barrack Rd, Exeter, EX2 5DW, UK
| | - Daniel L van den Hove
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Maastricht University Medical Centre, Maastricht, The Netherlands
- Laboratory of Translational Neuroscience, Division of Molecular Psychiatry, Department of Psychiatry, Psychosomatics and Psychotherapy, University of Würzburg, Würzburg, Germany
| | - Katie Lunnon
- College of Medicine and Health, University of Exeter Medical School, Exeter University, RILD Building Level 4, Royal Devon and Exeter Hospital, Barrack Rd, Exeter, EX2 5DW, UK.
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149
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Nabavi SM, Ahmed T, Nawaz M, Devi KP, Balan DJ, Pittalà V, Argüelles-Castilla S, Testai L, Khan H, Sureda A, de Oliveira MR, Vacca RA, Xu S, Yousefi B, Curti V, Daglia M, Sobarzo-Sánchez E, Filosa R, Nabavi SF, Majidinia M, Dehpour AR, Shirooie S. Targeting STATs in neuroinflammation: The road less traveled! Pharmacol Res 2018; 141:73-84. [PMID: 30550953 DOI: 10.1016/j.phrs.2018.12.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 12/01/2018] [Accepted: 12/10/2018] [Indexed: 12/16/2022]
Abstract
JAK/STAT transduction pathway is a highly conserved pathway implicated in regulating cellular proliferation, differentiation, survival and apoptosis. Dysregulation of this pathway is involved in the onset of autoimmune, haematological, oncological, metabolic and neurological diseases. Over the last few years, the research of anti-neuroinflammatory agents has gained considerable attention. The ability to diminish the STAT-induced transcription of inflammatory genes is documented for both natural compounds (such as polyphenols) and chemical drugs. Among polyphenols, quercetin and curcumin directly inhibit STAT, while Berberis vulgaris L. and Sophora alopecuroides L extracts act indirectly. Also, the Food and Drug Administration has approved several JAK/STAT inhibitors (direct or indirect) for treating inflammatory diseases, indicating STAT can be considered as a therapeutic target for neuroinflammatory pathologies. Considering the encouraging data obtained so far, clinical trials are warranted to demonstrate the effectiveness and potential use in the clinical practice of STAT inhibitors to treat inflammation-associated neurodegenerative pathologies.
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Affiliation(s)
- Seyed Mohammad Nabavi
- Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran.
| | - Touqeer Ahmed
- Neurobiology Laboratory, Department of Healthcare Biotechnology, Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology, Sector H-12, Islamabad, 44000, Pakistan
| | - Maheen Nawaz
- Neurobiology Laboratory, Department of Healthcare Biotechnology, Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology, Sector H-12, Islamabad, 44000, Pakistan
| | - Kasi Pandima Devi
- Department of Biotechnology, Alagappa University (Science Campus), Karaikudi 630 003, Tamil Nadu, India
| | - Devasahayam Jaya Balan
- Department of Biotechnology, Alagappa University (Science Campus), Karaikudi 630 003, Tamil Nadu, India
| | - Valeria Pittalà
- Department of Drug Sciences, University of Catania, Viale A. Doria 6, 95125, Catania, Italy
| | | | - Lara Testai
- Department of Pharmacy, University of Pisa, Pisa, via Bonanno 6 - 56126, Pisa, Italy
| | - Haroon Khan
- Department of Pharmacy, Abdul Wali Khan University, Mardan 23200, Pakistan
| | - Antoni Sureda
- Research Group on Community Nutrition and Oxidative Stress and CIBEROBN (Physiopathology of Obesity and Nutrition), University of Balearic Islands, E-07122 Palma de Mallorca, Spain.
| | - Marcos Roberto de Oliveira
- Department of Chemistry/ICET, Federal University of Mato Grosso (UFMT), Av. Fernando Corrêa da Costa, 2367, Cuiaba, MT, 78060-900, Brazil
| | - Rosa Anna Vacca
- Institute of Biomembranes, Bioenergetics and Molecular Biotechnologies, National Council of Research, I-70126, Bari, Italy
| | - Suowen Xu
- University of Rochester, Aab Cardiovascular Research Institute, Rochester, NY, 14623, USA
| | - Bahman Yousefi
- Molecular Medicine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Valeria Curti
- Department of Drug Sciences, University of Pavia, Pavia, Italy
| | - Maria Daglia
- Department of Drug Sciences, University of Pavia, Pavia, Italy
| | - Eduardo Sobarzo-Sánchez
- Laboratory of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Santiago de Compostela, 15782, Spain; Instituto de Investigación e Innovación en Salud, Facultad de Ciencias de la Salud, Universidad Central de Chile, Santiago, Chile
| | - Rosanna Filosa
- Consorzio Sannio Tech, Appia Str, Apollosa, BN 82030, Italy
| | - Seyed Fazel Nabavi
- Pharmaceutical Sciences Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran; Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Maryam Majidinia
- Solid Tumor Research Center, Urmia University of Medical Sciences, Urmia, Iran
| | - Ahmad Reza Dehpour
- Department of Pharmacology, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran; Experimental Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Samira Shirooie
- Department of Pharmacology, Faculty of Pharmacy, Kermanshah University of Medical Sciences, Kermanshah, Iran
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150
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Venuto S, Castellana S, Monti M, Appolloni I, Fusilli C, Fusco C, Pucci P, Malatesta P, Mazza T, Merla G, Micale L. TRIM8-driven transcriptomic profile of neural stem cells identified glioma-related nodal genes and pathways. Biochim Biophys Acta Gen Subj 2018; 1863:491-501. [PMID: 30528352 DOI: 10.1016/j.bbagen.2018.12.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 11/26/2018] [Accepted: 12/03/2018] [Indexed: 12/25/2022]
Abstract
BACKGROUND We recently reported TRIM8, encoding an E3 ubiquitin ligase, as a gene aberrantly expressed in glioblastoma whose expression suppresses cell growth and induces a significant reduction of clonogenic potential in glioblastoma cell lines. METHODS we provided novel insights on TRIM8 functions by profiling the transcriptome of TRIM8-expressing primary mouse embryonal neural stem cells by RNA-sequencing and bioinformatic analysis. Functional analysis including luciferase assay, western blot, PCR arrays, Real time quantitative PCR were performed to validate the transcriptomic data. RESULTS Our study identified enriched pathways related to the neurotransmission and to the central nervous system (CNS) functions, including axonal guidance, GABA receptor, Ephrin B, synaptic long-term potentiation/depression, and glutamate receptor signalling pathways. Finally, we provided additional evidence about the existence of a functional interactive crosstalk between TRIM8 and STAT3. CONCLUSIONS Our results substantiate the role of TRIM8 in the brain functions through the dysregulation of genes involved in different CNS-related pathways, including JAK-STAT. GENERAL SIGNIFICANCE This study provides novel insights on the physiological TRIM8 function by profiling for the first time the primary Neural Stem Cell over-expressing TRIM8 by using RNA-Sequencing methodology.
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Affiliation(s)
- Santina Venuto
- Division of Medical Genetics, Fondazione IRCCS Casa Sollievo della Sofferenza, Viale Padre Pio, 71013, San Giovanni Rotondo, Foggia, Italy; Experimental and Regenerative Medicine, University of Foggia, Via A. Gramsci, 89/91, 71122, Foggia, Italy.
| | - Stefano Castellana
- Bioinformatics Unit, Fondazione IRCCS Casa Sollievo della Sofferenza, Viale Padre Pio, 71013, San Giovanni Rotondo, Foggia, Italy.
| | - Maria Monti
- CEINGE Advanced Biotechnology, Department of Chemical Sciences, Federico II University, Via Gaetano Salvatore, 486, 80145, Napoli, Italy.
| | - Irene Appolloni
- U.O. Medicina Rigenerativa Ospedale Policlinico San Martino, Largo R. Benzi 10, 16132 Genova, Italy
| | - Caterina Fusilli
- Bioinformatics Unit, Fondazione IRCCS Casa Sollievo della Sofferenza, Viale Padre Pio, 71013, San Giovanni Rotondo, Foggia, Italy.
| | - Carmela Fusco
- Division of Medical Genetics, Fondazione IRCCS Casa Sollievo della Sofferenza, Viale Padre Pio, 71013, San Giovanni Rotondo, Foggia, Italy.
| | - Piero Pucci
- CEINGE Advanced Biotechnology, Department of Chemical Sciences, Federico II University, Via Gaetano Salvatore, 486, 80145, Napoli, Italy.
| | - Paolo Malatesta
- U.O. Medicina Rigenerativa Ospedale Policlinico San Martino, Largo R. Benzi 10, 16132 Genova, Italy; Department of Experimental Medicine (DiMES), University of Genova, Via Leon Battista Alberti, 2, 16132 Genova, Italy.
| | - Tommaso Mazza
- Bioinformatics Unit, Fondazione IRCCS Casa Sollievo della Sofferenza, Viale Padre Pio, 71013, San Giovanni Rotondo, Foggia, Italy.
| | - Giuseppe Merla
- Division of Medical Genetics, Fondazione IRCCS Casa Sollievo della Sofferenza, Viale Padre Pio, 71013, San Giovanni Rotondo, Foggia, Italy.
| | - Lucia Micale
- Division of Medical Genetics, Fondazione IRCCS Casa Sollievo della Sofferenza, Viale Padre Pio, 71013, San Giovanni Rotondo, Foggia, Italy.
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