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Nassiri I, Kwok AJ, Bhandari A, Bull KR, Garner LC, Klenerman P, Webber C, Parkkinen L, Lee AW, Wu Y, Fairfax B, Knight JC, Buck D, Piazza P. Demultiplexing of single-cell RNA-sequencing data using interindividual variation in gene expression. BIOINFORMATICS ADVANCES 2024; 4:vbae085. [PMID: 38911824 PMCID: PMC11193101 DOI: 10.1093/bioadv/vbae085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2024] [Accepted: 06/07/2024] [Indexed: 06/25/2024]
Abstract
Motivation Pooled designs for single-cell RNA sequencing, where many cells from distinct samples are processed jointly, offer increased throughput and reduced batch variation. This study describes expression-aware demultiplexing (EAD), a computational method that employs differential co-expression patterns between individuals to demultiplex pooled samples without any extra experimental steps. Results We use synthetic sample pools and show that the top interindividual differentially co-expressed genes provide a distinct cluster of cells per individual, significantly enriching the regulation of metabolism. Our application of EAD to samples of six isogenic inbred mice demonstrated that controlling genetic and environmental effects can solve interindividual variations related to metabolic pathways. We utilized 30 samples from both sepsis and healthy individuals in six batches to assess the performance of classification approaches. The results indicate that combining genetic and EAD results can enhance the accuracy of assignments (Min. 0.94, Mean 0.98, Max. 1). The results were enhanced by an average of 1.4% when EAD and barcoding techniques were combined (Min. 1.25%, Median 1.33%, Max. 1.74%). Furthermore, we demonstrate that interindividual differential co-expression analysis within the same cell type can be used to identify cells from the same donor in different activation states. By analysing single-nuclei transcriptome profiles from the brain, we demonstrate that our method can be applied to nonimmune cells. Availability and implementation EAD workflow is available at https://isarnassiri.github.io/scDIV/ as an R package called scDIV (acronym for single-cell RNA-sequencing data demultiplexing using interindividual variations).
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Affiliation(s)
- Isar Nassiri
- Nuffield Department of Medicine, Centre for Human Genetics, Oxford-GSK Institute of Molecular and Computational Medicine (IMCM), University of Oxford, Oxford, OX3 7BN, United Kingdom
- Nuffield Department of Medicine, Centre for Human Genetics, University of Oxford, Oxford, OX3 7BN, United Kingdom
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, OX3 9DU, United Kingdom
- Department of Psychiatry, University of Oxford, Oxford, OX3 7JX, United Kingdom
| | - Andrew J Kwok
- Nuffield Department of Medicine, Centre for Human Genetics, University of Oxford, Oxford, OX3 7BN, United Kingdom
- Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, 999077, China
| | - Aneesha Bhandari
- Nuffield Department of Medicine, Centre for Human Genetics, University of Oxford, Oxford, OX3 7BN, United Kingdom
| | - Katherine R Bull
- Nuffield Department of Medicine, Centre for Human Genetics, University of Oxford, Oxford, OX3 7BN, United Kingdom
| | - Lucy C Garner
- Translational Gastroenterology Unit, Nuffield Department of Medicine, University of Oxford, Oxford, OX3 9DU, United Kingdom
| | - Paul Klenerman
- Translational Gastroenterology Unit, Nuffield Department of Medicine, University of Oxford, Oxford, OX3 9DU, United Kingdom
- Peter Medawar Building for Pathogen Research, University of Oxford, Oxford, OX1 3SY, United Kingdom
- NIHR Oxford Biomedical Research Centre, John Radcliffe Hospital, Oxford, OX3 9DU, United Kingdom
| | - Caleb Webber
- Department of Physiology, Anatomy, Genetics, Oxford Parkinson’s Disease Centre, University of Oxford, Oxford, OX1 3PT, United Kingdom
- UK Dementia Research Institute, Cardiff University, Cardiff, CF24 4HQ, United Kingdom
| | - Laura Parkkinen
- Nuffield Department of Medicine, Centre for Human Genetics, Oxford-GSK Institute of Molecular and Computational Medicine (IMCM), University of Oxford, Oxford, OX3 7BN, United Kingdom
- Nuffield Department of Clinical Neurosciences, Oxford Parkinson’s Disease Centre, University of Oxford, Oxford, OX3 9DU, United Kingdom
| | - Angela W Lee
- Nuffield Department of Medicine, Centre for Human Genetics, University of Oxford, Oxford, OX3 7BN, United Kingdom
| | - Yanxia Wu
- Nuffield Department of Medicine, Centre for Human Genetics, University of Oxford, Oxford, OX3 7BN, United Kingdom
| | - Benjamin Fairfax
- MRC–Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, OX3 9DS, United Kingdom
- Department of Oncology, University of Oxford & Oxford Cancer Centre, Churchill Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, OX3 7DQ, United Kingdom
| | - Julian C Knight
- Nuffield Department of Medicine, Centre for Human Genetics, University of Oxford, Oxford, OX3 7BN, United Kingdom
- Chinese Academy of Medical Science Oxford Institute, University of Oxford, Oxford, OX3 7BN, United Kingdom
| | - David Buck
- Nuffield Department of Medicine, Centre for Human Genetics, University of Oxford, Oxford, OX3 7BN, United Kingdom
| | - Paolo Piazza
- Nuffield Department of Medicine, Centre for Human Genetics, Oxford-GSK Institute of Molecular and Computational Medicine (IMCM), University of Oxford, Oxford, OX3 7BN, United Kingdom
- Nuffield Department of Medicine, Centre for Human Genetics, University of Oxford, Oxford, OX3 7BN, United Kingdom
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Pirmoradi Z, Nakhaie M, Ranjbar H, Kalantar-Neyestanaki D, Kohlmeier KA, Asadi-Shekaari M, Hassanshahi A, Shabani M. Resveratrol and 1,25-dihydroxyvitamin D decrease Lingo-1 levels, and improve behavior in harmaline-induced Essential tremor, suggesting potential therapeutic benefits. Sci Rep 2024; 14:9864. [PMID: 38684734 PMCID: PMC11058818 DOI: 10.1038/s41598-024-60518-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 04/24/2024] [Indexed: 05/02/2024] Open
Abstract
Essential tremor (ET) is a neurological disease that impairs motor and cognitive functioning. A variant of the Lingo-1 genetic locus is associated with a heightened ET risk, and increased expression of cerebellar Lingo-1. Lingo-1 has been associated with neurodegenerative processes; however, neuroprotection from ET-associated degeneration can be conferred by the protein Sirt1. Sirt1 activity can be promoted by Resveratrol (Res) and 1,25-dihydroxyvitamin D3 (VitD3), and thus these factors may exert neuroprotective properties through a Sirt1 mechanism. As Res and VitD3 are linked to Sirt1, enhancing Sirt1 could counteract the negative effects of increased Lingo-1. Therefore, we hypothesized that a combination of Res-VitD3 in a harmaline injection model of ET would modulate Sirt1 and Lingo-1 levels. As expected, harmaline exposure (10 mg/kg/every other day; i.p.) impaired motor coordination, enhanced tremors, rearing, and cognitive dysfunction. When Res (5 mg/kg/day; i.p.) and VitD3 (0.1 mg/kg/day; i.p.) were given to adult rats (n = 8 per group) an hour before harmaline, tremor severity, rearing, and memory impairment were reduced. Individual treatment with Res and VitD3 decreased Lingo-1 gene expression levels in qPCR assays. Co-treatment with Res and VitD3 increased and decreased Sirt1 and Lingo-1 gene expression levels, respectively, and in some cases, beneficial effects on behavior were noted, which were not seen when Res or VitD3 were individually applied. Taken together, our study found that Res and VitD3 improved locomotor and cognitive deficits, modulated Sirt1 and Lingo-1. Therefore, we would recommend co-treatment of VitD3 and Res to leverage complementary effects for the management of ET symptoms.
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Affiliation(s)
- Zeynab Pirmoradi
- Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, 76198-13159, Iran
| | - Mohsen Nakhaie
- Gastroenterology and Hepatology Research Center, Institute of Basic and Clinical Physiology Sciences, Kerman University of Medical Sciences, Kerman, Iran
| | - Hoda Ranjbar
- Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, 76198-13159, Iran
| | | | - Kristi A Kohlmeier
- Department of Drug Design and Pharmacology, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Majid Asadi-Shekaari
- Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, 76198-13159, Iran
| | - Amin Hassanshahi
- Department of Physiology, Medical School, Bam University of Medical Sciences, Bam, Iran
| | - Mohammad Shabani
- Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, 76198-13159, Iran.
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Wang XW, Yang SG, Hu MW, Wang RY, Zhang C, Kosanam AR, Ochuba AJ, Jiang JJ, Luo X, Guan Y, Qian J, Liu CM, Zhou FQ. Histone methyltransferase Ezh2 coordinates mammalian axon regeneration via regulation of key regenerative pathways. J Clin Invest 2024; 134:e163145. [PMID: 38015636 PMCID: PMC10849760 DOI: 10.1172/jci163145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 11/21/2023] [Indexed: 11/30/2023] Open
Abstract
Current treatments for neurodegenerative diseases and neural injuries face major challenges, primarily due to the diminished regenerative capacity of neurons in the mammalian CNS as they mature. Here, we investigated the role of Ezh2, a histone methyltransferase, in regulating mammalian axon regeneration. We found that Ezh2 declined in the mouse nervous system during maturation but was upregulated in adult dorsal root ganglion neurons following peripheral nerve injury to facilitate spontaneous axon regeneration. In addition, overexpression of Ezh2 in retinal ganglion cells in the CNS promoted optic nerve regeneration via both histone methylation-dependent and -independent mechanisms. Further investigation revealed that Ezh2 fostered axon regeneration by orchestrating the transcriptional silencing of genes governing synaptic function and those inhibiting axon regeneration, while concurrently activating various factors that support axon regeneration. Notably, we demonstrated that GABA transporter 2, encoded by Slc6a13, acted downstream of Ezh2 to control axon regeneration. Overall, our study underscores the potential of modulating chromatin accessibility as a promising strategy for promoting CNS axon regeneration.
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Affiliation(s)
- Xue-Wei Wang
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Department of Molecular Medicine, University of South Florida Morsani College of Medicine, Tampa, Florida, USA
| | - Shu-Guang Yang
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | | | - Rui-Ying Wang
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Chi Zhang
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Anish R. Kosanam
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Arinze J. Ochuba
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Jing-Jing Jiang
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | | | - Yun Guan
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | | | - Chang-Mei Liu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Feng-Quan Zhou
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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Adams JM, Rege SV, Liu AT, Vu NV, Raina S, Kirsher DY, Nguyen AL, Harish R, Szoke B, Leone DP, Czirr E, Braithwaite S, Kerrisk Campbell M. Leukotriene A4 hydrolase inhibition improves age-related cognitive decline via modulation of synaptic function. SCIENCE ADVANCES 2023; 9:eadf8764. [PMID: 37976357 PMCID: PMC10656077 DOI: 10.1126/sciadv.adf8764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 10/13/2023] [Indexed: 11/19/2023]
Abstract
Leukotrienes, a class of inflammatory bioactive lipids, are well studied in the periphery, but less is known of their importance in the brain. We identified that the enzyme leukotriene A4 hydrolase (LTA4H) is expressed in healthy mouse neurons, and inhibition of LTA4H in aged mice improves hippocampal dependent memory. Single-cell nuclear RNA sequencing of hippocampal neurons after inhibition reveals major changes to genes important for synaptic organization, structure, and activity. We propose that LTA4H inhibition may act to improve cognition by directly inhibiting the enzymatic activity in neurons, leading to improved synaptic function. In addition, LTA4H plasma levels are increased in both aging and Alzheimer's disease and correlated with cognitive impairment. These results identify a role for LTA4H in the brain, and we propose that LTA4H inhibition may be a promising therapeutic strategy to treat cognitive decline in aging related diseases.
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Affiliation(s)
- Julia M. Adams
- Alkahest Inc., 125 Shoreway Road, Suite D, San Carlos, CA 94070, USA
| | - Sanket V. Rege
- Alkahest Inc., 125 Shoreway Road, Suite D, San Carlos, CA 94070, USA
| | | | - Ninh V. Vu
- Alkahest Inc., 125 Shoreway Road, Suite D, San Carlos, CA 94070, USA
| | - Sharda Raina
- Alkahest Inc., 125 Shoreway Road, Suite D, San Carlos, CA 94070, USA
| | | | - Amy L. Nguyen
- Alkahest Inc., 125 Shoreway Road, Suite D, San Carlos, CA 94070, USA
| | | | - Balazs Szoke
- Alkahest Inc., 125 Shoreway Road, Suite D, San Carlos, CA 94070, USA
| | - Dino P. Leone
- Alkahest Inc., 125 Shoreway Road, Suite D, San Carlos, CA 94070, USA
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Atta A, Gupta A, Choudhary P, Dwivedi S, Singh S. Inhibition of LINGO1 as a therapeutic target to promote axonal regeneration and repair for neurological disorders. 3 Biotech 2023; 13:372. [PMID: 37854938 PMCID: PMC10579209 DOI: 10.1007/s13205-023-03789-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 09/23/2023] [Indexed: 10/20/2023] Open
Abstract
The Central nervous system is blemished by the high incidence of neurodegenerative diseases, which is known to cause disfiguration of regeneration and repair of axonal growth. Recognition of proteins that act as agents of repressing such repair has become the norm to tackle these abominable conditions. One such protein is LINGO1 that act as a repressor for axonal growth. Being one of the critical causative agents of several neurodegenerative pathways. Consequently, its inhibition may tend to help the outcomes of regenerative technologies aiming to outweigh the symptoms of neurodegenerative diseases. For this objective, LINGO1 was targeted with pharmacophore analogs of Fasudil and Ibuprofen, as they are known to have a deterring effect against the concerned protein. 1-Tosyl-2-(chloromethyl)-2,3-dihydro-1H-indole was found showing the least binding score of - 6.8, with verified ADMET admissibility. The pharmacological activity of the said ligand was estimated with QSAR tool showing favourable electro-steric model. All this was finally collaborated with a molecular dynamics simulation study which exhibited a stable structure compatibility of the ligand with LINGO-1. Further, the efficacy of the compound can be evaluated through experimental studies for inferring its future potential and utilization as an effective means to tackle neuronal regeneration and remyleination. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-023-03789-4.
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Affiliation(s)
- Avik Atta
- Applied Science Department, Indian Institute of Information Technology, Allahabad, Devghat, Jhalwa, Prayagraj, 211015 Uttar Pradesh India
| | - Ayushi Gupta
- Applied Science Department, Indian Institute of Information Technology, Allahabad, Devghat, Jhalwa, Prayagraj, 211015 Uttar Pradesh India
| | - Princy Choudhary
- Applied Science Department, Indian Institute of Information Technology, Allahabad, Devghat, Jhalwa, Prayagraj, 211015 Uttar Pradesh India
| | - Shrey Dwivedi
- Applied Science Department, Indian Institute of Information Technology, Allahabad, Devghat, Jhalwa, Prayagraj, 211015 Uttar Pradesh India
| | - Sangeeta Singh
- Applied Science Department, Indian Institute of Information Technology, Allahabad, Devghat, Jhalwa, Prayagraj, 211015 Uttar Pradesh India
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Nogo-A and LINGO-1: Two Important Targets for Remyelination and Regeneration. Int J Mol Sci 2023; 24:ijms24054479. [PMID: 36901909 PMCID: PMC10003089 DOI: 10.3390/ijms24054479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 02/13/2023] [Accepted: 02/22/2023] [Indexed: 02/26/2023] Open
Abstract
Multiple sclerosis (MS) is an inflammatory disease of the central nervous system (CNS) that causes progressive neurological disability in most patients due to neurodegeneration. Activated immune cells infiltrate the CNS, triggering an inflammatory cascade that leads to demyelination and axonal injury. Non-inflammatory mechanisms are also involved in axonal degeneration, although they are not fully elucidated yet. Current therapies focus on immunosuppression; however, no therapies to promote regeneration, myelin repair, or maintenance are currently available. Two different negative regulators of myelination have been proposed as promising targets to induce remyelination and regeneration, namely the Nogo-A and LINGO-1 proteins. Although Nogo-A was first discovered as a potent neurite outgrowth inhibitor in the CNS, it has emerged as a multifunctional protein. It is involved in numerous developmental processes and is necessary for shaping and later maintaining CNS structure and functionality. However, the growth-restricting properties of Nogo-A have negative effects on CNS injury or disease. LINGO-1 is also an inhibitor of neurite outgrowth, axonal regeneration, oligodendrocyte differentiation, and myelin production. Inhibiting the actions of Nogo-A or LINGO-1 promotes remyelination both in vitro and in vivo, while Nogo-A or LINGO-1 antagonists have been suggested as promising therapeutic approaches for demyelinating diseases. In this review, we focus on these two negative regulators of myelination while also providing an overview of the available data on the effects of Nogo-A and LINGO-1 inhibition on oligodendrocyte differentiation and remyelination.
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Zhou YN, Jiang L, Zhang Y, Zhou CN, Yang H, He Q, Wang YY, Xiao Q, Huang DJ, Luo YM, Tang Y, Chao FL. Anti-LINGO-1 antibody protects neurons and synapses in the medial prefrontal cortex of APP/PS1 transgenic mice. Neurosci Res 2023:S0168-0102(23)00039-1. [PMID: 36804877 DOI: 10.1016/j.neures.2023.02.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 02/11/2023] [Accepted: 02/14/2023] [Indexed: 02/19/2023]
Abstract
The medial prefrontal cortex (mPFC), one of the most vulnerable brain regions in Alzheimer's disease (AD), plays a critical role in cognition. Leucine-rich repeat and immunoglobulin-like domain-containing nogo receptor-interacting protein-1 (LINGO-1) negatively affects nerve growth in the central nervous system; however, its role in the pathological damage to the mPFC remains to be studied in AD. In this study, an anti-LINGO-1 antibody was administered to 10-month-old APP/PS1 mice, and behavioral tests, stereological methods, immunohistochemistry and immunofluorescence were used to answer this question. Our results revealed that LINGO-1 was highly expressed in the neurons of the mPFC of AD mice, and the anti-LINGO-1 antibody improved prefrontal cortex-related function and reduced the protein level of LINGO-1, atrophy of the volume, Aβ deposition and massive losses of synapses and neurons in the mPFC of AD mice. Antagonizing LINGO-1 could effectively alleviate the pathological damage in the mPFC of AD mice, which might be an important structural basis for improving prefrontal cortex-related function. Abnormal expression of LINGO-1 in the mPFC may be one of the key targets of AD, and the effect initiated by the anti-LINGO-1 antibody may provide an important basis in the search for drugs for the prevention and treatment of AD.
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Affiliation(s)
- Yu-Ning Zhou
- Department of Histology and Embryology, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China
| | - Lin Jiang
- Experimental Teaching Management Center, Chongqing Medical University, Chongqing 400016, PR China
| | - Yi Zhang
- Department of Laboratory Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, PR China
| | - Chun-Ni Zhou
- Department of Histology and Embryology, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China
| | - Hao Yang
- Department of Histology and Embryology, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China
| | - Qi He
- Department of Histology and Embryology, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China
| | - Yi-Ying Wang
- Department of Histology and Embryology, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China
| | - Qian Xiao
- Department of Radioactive Medicine, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China
| | - Du-Juan Huang
- Department of Histology and Embryology, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China
| | - Yan-Min Luo
- Department of Physiology, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China
| | - Yong Tang
- Department of Histology and Embryology, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China.
| | - Feng-Lei Chao
- Department of Histology and Embryology, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China.
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Yang H, Jiang L, Zhang Y, Liang X, Tang J, He Q, Luo YM, Zhou CN, Zhu L, Zhang SS, Xiao K, Zhu PL, Wang J, Li Y, Chao FL, Tang Y. Anti-LINGO-1 antibody treatment alleviates cognitive deficits and promotes maturation of oligodendrocytes in the hippocampus of APP/PS1 mice. J Comp Neurol 2022; 530:1606-1621. [PMID: 35014704 DOI: 10.1002/cne.25299] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 01/05/2022] [Accepted: 01/07/2022] [Indexed: 01/18/2023]
Abstract
Leucine-rich repeat and immunoglobulin-like domain-containing nogo receptor-interacting protein 1 (LINGO-1), a negative regulator of oligodendrocyte differentiation and myelination, is associated with cognitive function, and its expression is highly upregulated in Alzheimer's disease (AD) patients. Anti-LINGO-1 antibody treatment can effectively antagonize the negative regulatory effect of LINGO-1. In this study, we aim to assess the effect of anti-LINGO-1 antibody treatment on cognition and hippocampal oligodendrocytes in an AD transgenic animal model. First, 10-month-old male APP/PS1 mice were administered anti-LINGO-1 antibody for 8 weeks. Then, learning and memory abilities were assessed with the Morris water maze (MWM) and Y-maze tests, and amyloid-beta (Aβ) deposition and hippocampal oligodendrocytes were investigated by immunohistochemistry, immunofluorescence, and stereology. We found that anti-LINGO-1 antibody alleviated the deficits in spatial learning and memory abilities and working and reference memory abilities, decreased the density of LINGO-1 positive cells, decreased Aβ deposition, significantly increased the number of mature oligodendrocytes and the density of myelin, reversed the abnormal increases in the number of oligodendrocyte lineage cells and the densities of oligodendrocytes precursor cells in APP/PS1 mice. Our results provide evidence that LINGO-1 might be involved in the process of oligodendrocyte dysmaturity in the hippocampus of AD mice and that antagonizing LINGO-1 can alleviate cognitive deficits in APP/PS1 mice and decrease Aβ deposition and promote oligodendrocyte differentiation and maturation in the hippocampus of these mice. Our findings suggest that changes in LINGO-1 and oligodendrocytes in the hippocampus play important roles in the pathogenesis of AD and that antagonizing LINGO-1 might be a potential therapeutic strategy for AD. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Hao Yang
- Department of Histology and Embryology, College of Basic Medicine, Chongqing Medical University, P. R. China.,Laboratory of Stem Cell and Tissue Engineering, College of Basic Medicine, Chongqing Medical University, P. R. China.,Department of Biomedical Engineering, College of Biomedical Engineering, Chongqing Medical University, P. R. China
| | - Lin Jiang
- Experimental Teaching Management Center, Chongqing Medical University, Chongqing, 400016, PR China
| | - Yi Zhang
- Department of Laboratory Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, PR China
| | - Xin Liang
- Department of Pathophysiology, College of Basic Medicine, Chongqing Medical University, Chongqing, 400016, PR China
| | - Jing Tang
- Department of Histology and Embryology, College of Basic Medicine, Chongqing Medical University, P. R. China.,Laboratory of Stem Cell and Tissue Engineering, College of Basic Medicine, Chongqing Medical University, P. R. China
| | - Qi He
- Department of Histology and Embryology, College of Basic Medicine, Chongqing Medical University, P. R. China.,Laboratory of Stem Cell and Tissue Engineering, College of Basic Medicine, Chongqing Medical University, P. R. China
| | - Yan-Min Luo
- Department of Physiology, Chongqing Medical University, Chongqing, 400016, PR China
| | - Chun-Ni Zhou
- Department of Histology and Embryology, College of Basic Medicine, Chongqing Medical University, P. R. China.,Laboratory of Stem Cell and Tissue Engineering, College of Basic Medicine, Chongqing Medical University, P. R. China
| | - Lin Zhu
- Department of Histology and Embryology, College of Basic Medicine, Chongqing Medical University, P. R. China.,Laboratory of Stem Cell and Tissue Engineering, College of Basic Medicine, Chongqing Medical University, P. R. China
| | - Shan-Shan Zhang
- Department of Histology and Embryology, College of Basic Medicine, Chongqing Medical University, P. R. China.,Laboratory of Stem Cell and Tissue Engineering, College of Basic Medicine, Chongqing Medical University, P. R. China
| | - Kai Xiao
- Department of Histology and Embryology, College of Basic Medicine, Chongqing Medical University, P. R. China.,Laboratory of Stem Cell and Tissue Engineering, College of Basic Medicine, Chongqing Medical University, P. R. China
| | - Pei-Lin Zhu
- Department of Histology and Embryology, College of Basic Medicine, Chongqing Medical University, P. R. China.,Laboratory of Stem Cell and Tissue Engineering, College of Basic Medicine, Chongqing Medical University, P. R. China
| | - Jin Wang
- Department of Histology and Embryology, College of Basic Medicine, Chongqing Medical University, P. R. China.,Laboratory of Stem Cell and Tissue Engineering, College of Basic Medicine, Chongqing Medical University, P. R. China
| | - Yue Li
- Department of Histology and Embryology, College of Basic Medicine, Chongqing Medical University, P. R. China.,Laboratory of Stem Cell and Tissue Engineering, College of Basic Medicine, Chongqing Medical University, P. R. China
| | - Feng-Lei Chao
- Department of Histology and Embryology, College of Basic Medicine, Chongqing Medical University, P. R. China.,Laboratory of Stem Cell and Tissue Engineering, College of Basic Medicine, Chongqing Medical University, P. R. China
| | - Yong Tang
- Department of Histology and Embryology, College of Basic Medicine, Chongqing Medical University, P. R. China.,Laboratory of Stem Cell and Tissue Engineering, College of Basic Medicine, Chongqing Medical University, P. R. China
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Kumar S, Goyal L, Singh S. Tremor and Rigidity in Patients with Parkinson's Disease: Emphasis on Epidemiology, Pathophysiology and Contributing Factors. CNS & NEUROLOGICAL DISORDERS DRUG TARGETS 2022; 21:596-609. [PMID: 34620070 DOI: 10.2174/1871527320666211006142100] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 06/04/2021] [Accepted: 07/03/2021] [Indexed: 06/13/2023]
Abstract
Parkinson's disease (PD) is the second most prominent neurodegenerative movement disorder after Alzheimer's disease, involving 2-3% of the population aged above 65 years. This is mainly triggered by the depletion of dopaminergic neurons located in substantia nigra pars compacta (SNpc) in the region of basal ganglia. At present, diagnosis for symptoms of PD is clinical, contextual, unspecified and therapeutically incomprehensive. Analysis of various causes of PD is essential for an accurate examination of the disease. Among the different causes, such as tremors and rigidity, unresponsiveness to the current treatment approach contributes to mortality. In the present review article, we describe various key factors of pathogenesis and physiology associated with tremors and rigidity necessary for the treatment of PI (postural instability) in patients with PD. Additionally, several reports showing early tremor and rigidity causes, particularly age, cortex lesions, basal ganglia lesions, genetic abnormalities, weakened reflexes, nutrition, fear of fall, and altered biomechanics, have been explored. By summarizing the factors that contribute to the disease, histopathological studies can assess rigidity and tremor in PD. With a clear understanding of the contributing factors, various prospective studies can be done to assess the incidence of rigidity and tremors.
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Affiliation(s)
- Shivam Kumar
- Neuropharmacology Division, Department of Pharmacology, ISF College of Pharmacy, Moga-142001 Punjab, India
| | - Lav Goyal
- Neuropharmacology Division, Department of Pharmacology, ISF College of Pharmacy, Moga-142001 Punjab, India
| | - Shamsher Singh
- Neuropharmacology Division, Department of Pharmacology, ISF College of Pharmacy, Moga-142001 Punjab, India
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10
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Marques TM, van Rumund A, Kersten I, Bruinsma IB, Wessels HJ, Gloerich J, Kaffa C, Esselink RAJ, Bloem BR, Kuiperij HB, Verbeek MM. Identification of cerebrospinal fluid biomarkers for parkinsonism using a proteomics approach. NPJ Parkinsons Dis 2021; 7:107. [PMID: 34848724 PMCID: PMC8633286 DOI: 10.1038/s41531-021-00249-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 10/27/2021] [Indexed: 01/25/2023] Open
Abstract
The aim of our study was to investigate cerebrospinal fluid (CSF) tryptic peptide profiles as potential diagnostic biomarkers for the discrimination of parkinsonian disorders. CSF samples were collected from individuals with parkinsonism, who had an uncertain diagnosis at the time of inclusion and who were followed for up to 12 years in a longitudinal study. We performed shotgun proteomics to identify tryptic peptides in CSF of Parkinson's disease (PD, n = 10), multiple system atrophy patients (MSA, n = 5) and non-neurological controls (n = 10). We validated tryptic peptides with differential levels between PD and MSA using a newly developed selected reaction monitoring (SRM) assay in CSF of PD (n = 46), atypical parkinsonism patients (AP; MSA, n = 17; Progressive supranuclear palsy; n = 8) and non-neurological controls (n = 39). We identified 191 tryptic peptides that differed significantly between PD and MSA, of which 34 met our criteria for SRM development. For 14/34 peptides we confirmed differences between PD and AP. These tryptic peptides discriminated PD from AP with moderate-to-high accuracy. Random forest modelling including tryptic peptides plus either clinical assessments or other CSF parameters (neurofilament light chain, phosphorylated tau protein) and age improved the discrimination of PD vs. AP. Our results show that the discovery of tryptic peptides by untargeted and subsequent validation by targeted proteomics is a suitable strategy to identify potential CSF biomarkers for PD versus AP. Furthermore, the tryptic peptides, and corresponding proteins, that we identified as differential biomarkers may increase our current knowledge about the disease-specific pathophysiological mechanisms of parkinsonism.
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Affiliation(s)
- Tainá M. Marques
- grid.10417.330000 0004 0444 9382Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands ,Radboudumc Center of Expertise for Parkinson & Movement Disorders, Nijmegen, The Netherlands ,grid.10417.330000 0004 0444 9382Department of Laboratory Medicine, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Anouke van Rumund
- grid.10417.330000 0004 0444 9382Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands ,Radboudumc Center of Expertise for Parkinson & Movement Disorders, Nijmegen, The Netherlands
| | - Iris Kersten
- grid.10417.330000 0004 0444 9382Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands ,grid.10417.330000 0004 0444 9382Department of Laboratory Medicine, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Ilona B. Bruinsma
- grid.10417.330000 0004 0444 9382Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands ,grid.10417.330000 0004 0444 9382Department of Laboratory Medicine, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Hans J.C.T. Wessels
- grid.10417.330000 0004 0444 9382Department of Laboratory Medicine, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Jolein Gloerich
- grid.10417.330000 0004 0444 9382Department of Laboratory Medicine, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Charlotte Kaffa
- grid.10417.330000 0004 0444 9382Center for Molecular and Biomolecular Informatics, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Rianne A. J. Esselink
- grid.10417.330000 0004 0444 9382Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands ,Radboudumc Center of Expertise for Parkinson & Movement Disorders, Nijmegen, The Netherlands
| | - Bastiaan R. Bloem
- grid.10417.330000 0004 0444 9382Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands ,Radboudumc Center of Expertise for Parkinson & Movement Disorders, Nijmegen, The Netherlands
| | - H. Bea Kuiperij
- grid.10417.330000 0004 0444 9382Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands ,grid.10417.330000 0004 0444 9382Department of Laboratory Medicine, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Marcel M. Verbeek
- grid.10417.330000 0004 0444 9382Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands ,Radboudumc Center of Expertise for Parkinson & Movement Disorders, Nijmegen, The Netherlands ,grid.10417.330000 0004 0444 9382Department of Laboratory Medicine, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
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11
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Kulczyńska-Przybik A, Dulewicz M, Słowik A, Borawska R, Kułakowska A, Kochanowicz J, Mroczko B. The Clinical Significance of Cerebrospinal Fluid Reticulon 4 (RTN4) Levels in the Differential Diagnosis of Neurodegenerative Diseases. J Clin Med 2021; 10:jcm10225281. [PMID: 34830564 PMCID: PMC8622503 DOI: 10.3390/jcm10225281] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 11/09/2021] [Accepted: 11/11/2021] [Indexed: 11/16/2022] Open
Abstract
Neurodegenerative diseases (NDs) belong to the top global causes of mortality. Diagnostic approaches to improve early diagnosis and differentiation of these diseases are constantly being sought. Therefore, we aimed to assess the cerebrospinal fluid (CSF) concentrations of Reticulon 4 (RTN4) in patients with neurodegenerative diseases and evaluate the potential clinical usefulness of this protein. RTNs are transmembrane proteins mediating neuroanatomical plasticity and functional recovery after central nervous system injury or diseases. According to our best knowledge, this is the first investigation providing the data concerning the dynamic of CSF RTN4 protein levels in patients with different NDs. Methods: Overall, 77 newly diagnosed patients with neurodegenerative diseases, including Alzheimer’s disease (AD), Parkinson’s disease (PD), and multiple sclerosis (MS), as well as 21 controls, were enrolled in the study. The CSF concentrations of tested proteins were assessed using immunological assays. Results: We revealed significantly higher CSF RTN4A levels in patients with AD, PD, and MS in comparison to the controls. Moreover, the comparative analysis of RTN4 concentration between different neurodegenerative diseases revealed the highest concentration of RTN4A in AD patients and a statistically significant difference between AD vs. PD, and AD vs. MS groups. The increased CSF level of the protein correlated with Tau, and pTau181 proteins in AD as well as in PD patients. Conclusions: Our study presents a previously not identified clinical utility of RTN4 in the differential diagnosis of neurodegenerative diseases.
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Affiliation(s)
- Agnieszka Kulczyńska-Przybik
- Department of Neurodegeneration Diagnostics, Medical University of Bialystok, 15-269 Bialystok, Poland; (M.D.); (R.B.); (B.M.)
- Correspondence:
| | - Maciej Dulewicz
- Department of Neurodegeneration Diagnostics, Medical University of Bialystok, 15-269 Bialystok, Poland; (M.D.); (R.B.); (B.M.)
| | - Agnieszka Słowik
- Department of Neurology, Jagiellonian University, 30-688 Kraków, Poland;
| | - Renata Borawska
- Department of Neurodegeneration Diagnostics, Medical University of Bialystok, 15-269 Bialystok, Poland; (M.D.); (R.B.); (B.M.)
| | - Alina Kułakowska
- Department of Neurology, Medical University of Bialystok, 15-269 Bialystok, Poland; (A.K.); (J.K.)
| | - Jan Kochanowicz
- Department of Neurology, Medical University of Bialystok, 15-269 Bialystok, Poland; (A.K.); (J.K.)
| | - Barbara Mroczko
- Department of Neurodegeneration Diagnostics, Medical University of Bialystok, 15-269 Bialystok, Poland; (M.D.); (R.B.); (B.M.)
- Department of Biochemical Diagnostics, Medical University of Bialystok, 15-269 Bialystok, Poland
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12
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Daniel NH, Aravind A, Thakur P. Are ion channels potential therapeutic targets for Parkinson's disease? Neurotoxicology 2021; 87:243-257. [PMID: 34699791 DOI: 10.1016/j.neuro.2021.10.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 10/15/2021] [Accepted: 10/21/2021] [Indexed: 01/31/2023]
Abstract
Parkinson's disease (PD) is primarily associated with the progressive neurodegeneration of the dopaminergic neurons in the substantia nigra region of the brain. The resulting motor symptoms are managed with the help of dopamine replacement therapies. However, these therapeutics do not prevent the neurodegeneration underlying the disease and therefore lose their effectiveness in managing disease symptoms over time. Thus, there is an urgent need to develop newer therapeutics for the benefit of patients. The release of dopamine and the firing activity of substantia nigra neurons is regulated by several ion channels that act in concert. Dysregulations of these channels cause the aberrant movement of various ions in the intracellular milieu. This eventually leads to disruption of intracellular signalling cascades, alterations in cellular homeostasis, and bioenergetic deficits. Therefore, ion channels play a central role in driving the high vulnerability of dopaminergic neurons to degenerate during PD. Targeting ion channels offers an attractive mechanistic strategy to combat the process of neurodegeneration. In this review, we highlight the evidence pointing to the role of various ion channels in driving the PD processes. In addition, we also discuss the various drugs or compounds that target the ion channels and have shown neuroprotective potential in the in-vitro and in-vivo models of PD. We also discuss the current clinical status of various drugs targeting the ion channels in the context of PD.
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Affiliation(s)
- Neha Hanna Daniel
- School of Biology, Indian Institute of Science Education and Research (IISER)-Thiruvananthapuram, Kerala, 695551, India
| | - Ananya Aravind
- School of Biology, Indian Institute of Science Education and Research (IISER)-Thiruvananthapuram, Kerala, 695551, India
| | - Poonam Thakur
- School of Biology, Indian Institute of Science Education and Research (IISER)-Thiruvananthapuram, Kerala, 695551, India.
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13
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Li X, Pan Y, Gui J, Fang Z, Huang D, Luo H, Cheng L, Chen H, Song X, Jiang L. The Role and Mechanism of AMIGO3 in the Formation of Aberrant Neural Circuits After Status Convulsion in Immature Mice. Front Mol Neurosci 2021; 14:748115. [PMID: 34650403 PMCID: PMC8505997 DOI: 10.3389/fnmol.2021.748115] [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: 07/27/2021] [Accepted: 09/08/2021] [Indexed: 12/02/2022] Open
Abstract
Leucine rich repeat and immunoglobulin-like domain-containing protein 1 (Lingo-1) has gained considerable interest as a potential therapy for demyelinating diseases since it inhibits axonal regeneration and myelin production. However, the results of clinical trials targeted at Lingo-1 have been unsatisfactory. Amphoterin-induced gene and open reading frame-3 (AMIGO3), which is an analog of Lingo-1, might be an alternative therapeutic target for brain damage. In the present study, we investigated the effects of AMIGO3 on neural circuits in immature mice after status convulsion (SC) induced by kainic acid. The expression of both AMIGO3 and Lingo-1 was significantly increased after SC, with levels maintained to 20 days after SC. Following SC, transmission electron microscopy revealed the impaired microstructure of myelin sheaths and Western blot analysis showed a decrease in myelin basic protein expression, and this damage was alleviated by downregulation of AMIGO3 expression. The ROCK/RhoA signaling pathway was inhibited at 20 days after SC by downregulating AMIGO3 expression. These results indicate that AMIGO3 plays important roles in seizure-induced damage of myelin sheaths as well as axon growth and synaptic plasticity via the ROCK/RhoA signaling pathway.
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Affiliation(s)
- Xue Li
- Chongqing Key Laboratory of Pediatrics, Department of Neurology Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
| | - Yanan Pan
- Chongqing Key Laboratory of Pediatrics, Department of Neurology Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
| | - Jianxiong Gui
- Chongqing Key Laboratory of Pediatrics, Department of Neurology Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
| | - Zhixu Fang
- Chongqing Key Laboratory of Pediatrics, Department of Neurology Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
| | - Dishu Huang
- Chongqing Key Laboratory of Pediatrics, Department of Neurology Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
| | - Hanyu Luo
- Chongqing Key Laboratory of Pediatrics, Department of Neurology Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
| | - Li Cheng
- Chongqing Key Laboratory of Pediatrics, Department of Neurology Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
| | - Hengsheng Chen
- Chongqing Key Laboratory of Pediatrics, Department of Neurology Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
| | - Xiaojie Song
- Chongqing Key Laboratory of Pediatrics, Department of Neurology Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
| | - Li Jiang
- Chongqing Key Laboratory of Pediatrics, Department of Neurology Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
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14
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Chen K, Ding L, Shui H, Liang Y, Zhang X, Wang T, Li L, Liu S, Wu H. MiR-615 Agomir Encapsulated in Pluronic F-127 Alleviates Neuron Damage and Facilitates Function Recovery After Brachial Plexus Avulsion. J Mol Neurosci 2021; 72:136-148. [PMID: 34569008 PMCID: PMC8755699 DOI: 10.1007/s12031-021-01916-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 09/09/2021] [Indexed: 11/26/2022]
Abstract
Brachial plexus avulsion (BPA) is a devastating traumatic peripheral nerve injury complicated with paralysis of the upper extremity. We previously reported that leucine-rich repeat and immunoglobulin-like domain-containing NOGO receptor-interacting protein 1 (LINGO-1) has a potent role in inhibiting neuron survival and axonal regeneration after the central nervous system (CNS) damage and miR-615 is a potential microRNA (miRNA) negatively regulated LINGO-1. However, the effect of miR-615 in BPA remains to be elucidated. Accumulating evidence indicates that pluronic F-127 (PF-127) hydrogel could serve as a promising vehicle for miRNA encapsulation. Thus, to further explore the potential role of hydrogel-miR-615 in BPA-reimplantation, the present study established the BPA rat model and injected miR-615 agomir encapsulated by PF-127 hydrogel into the reimplantation site using a microsyringe. In this study, results indicated that hydrogel-miR-615 agomir effectively alleviated motoneuron loss by LINGO-1 inhibition, promoted musculocutaneous nerve regeneration and myelination, reduced astrocytes activation, promoted angiogenesis and attenuated peripheral amyotrophy, leading to improved motor functional rehabilitation of the upper extremity. In conclusion, our findings demonstrate that miR-615-loaded PF-127 hydrogel may represent a novel therapeutic strategy for BPA treatment.
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Affiliation(s)
- Kangzhen Chen
- Department of Anesthesiology, Guangzhou Huadu Affiliated Hospital of Guangdong Medical University (Guangzhou Huadu District Maternal and Child Health Care Hospital), Guangzhou, 510800, China
- Key Laboratory of Stem Cell and Regenerative Tissue Engineering, Guangdong Medical University, Dongguan, 523808, China
| | - Lu Ding
- Key Laboratory of Stem Cell and Regenerative Tissue Engineering, Guangdong Medical University, Dongguan, 523808, China
- Scientific Research Center, the Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China
| | - Hua Shui
- Department of Anesthesiology, Guangzhou Huadu Affiliated Hospital of Guangdong Medical University (Guangzhou Huadu District Maternal and Child Health Care Hospital), Guangzhou, 510800, China
| | - Yinru Liang
- Key Laboratory of Stem Cell and Regenerative Tissue Engineering, Guangdong Medical University, Dongguan, 523808, China
| | - Xiaomin Zhang
- Key Laboratory of Stem Cell and Regenerative Tissue Engineering, Guangdong Medical University, Dongguan, 523808, China
| | - Tao Wang
- Department of Surgery, The Third Hospital of Guangdong Medical University (Longjiang Hospital of Shunde District), Foshan, 528318, China
| | - Linke Li
- Key Laboratory of Stem Cell and Regenerative Tissue Engineering, Guangdong Medical University, Dongguan, 523808, China
| | - Shuxian Liu
- Department of Anesthesiology, Guangzhou Huadu Affiliated Hospital of Guangdong Medical University (Guangzhou Huadu District Maternal and Child Health Care Hospital), Guangzhou, 510800, China.
| | - Hongfu Wu
- Key Laboratory of Stem Cell and Regenerative Tissue Engineering, Guangdong Medical University, Dongguan, 523808, China.
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15
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Pradhan LK, Das SK. The Regulatory Role of Reticulons in Neurodegeneration: Insights Underpinning Therapeutic Potential for Neurodegenerative Diseases. Cell Mol Neurobiol 2021; 41:1157-1174. [PMID: 32504327 DOI: 10.1007/s10571-020-00893-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 05/29/2020] [Indexed: 02/06/2023]
Abstract
In the last few decades, cytoplasmic organellar dysfunction, such as that of the endoplasmic reticulum (ER), has created a new area of research interest towards the development of serious health maladies including neurodegenerative diseases. In this context, the extensively dispersed family of ER-localized proteins, i.e. reticulons (RTNs), is gaining interest because of its regulative control over neural regeneration. As most neurodegenerative diseases are pathologically manifested with the accretion of misfolded proteins with subsequent induction of ER stress, the regulatory role of RTNs in neural dysfunction cannot be ignored. With the limited information available in the literature, delineation of the functional connection between rising consequences of neurodegenerative diseases and RTNs need to be elucidated. In this review, we provide a broad overview on the recently revealed regulatory roles of reticulons in the pathophysiology of several health maladies, with special emphasis on neurodegeneration. Additionally, we have also recapitulated the decisive role of RTN4 in neurite regeneration and highlighted how neurodegeneration and proteinopathies are mechanistically linked with each other through specific RTN paralogues. With the recent findings advocating zebrafish Rtn4b (a mammalian Nogo-A homologue) downregulation following central nervous system (CNS) lesion, RTNs provides new insight into the CNS regeneration. However, there are controversies with respect to the role of Rtn4b in zebrafish CNS regeneration. Given these controversies, the connection between the unique regenerative capabilities of zebrafish CNS by distinct compensatory mechanisms and Rtn4b signalling pathway could shed light on the development of new therapeutic strategies against serious neurodegenerative diseases.
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Affiliation(s)
- Lilesh Kumar Pradhan
- Neurobiology Laboratory, Centre for Biotechnology, Siksha 'O' Anusandhan (Deemed To Be University), Kalinga Nagar, Bhubaneswar, 751003, India
| | - Saroj Kumar Das
- Neurobiology Laboratory, Centre for Biotechnology, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan (Deemed To Be University), Kalinga Nagar, Bhubaneswar, 751003, India.
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16
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Binamé F, Pham-Van LD, Bagnard D. Manipulating oligodendrocyte intrinsic regeneration mechanism to promote remyelination. Cell Mol Life Sci 2021; 78:5257-5273. [PMID: 34019104 PMCID: PMC11073109 DOI: 10.1007/s00018-021-03852-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 04/14/2021] [Accepted: 05/08/2021] [Indexed: 02/06/2023]
Abstract
In demyelinated lesions, astrocytes, activated microglia and infiltrating macrophages secrete several factors regulating oligodendrocyte precursor cells' behaviour. What appears to be the initiation of an intrinsic mechanism of myelin repair is only leading to partial recovery and inefficient remyelination, a process worsening over the course of the disease. This failure is largely due to the concomitant accumulation of inhibitory cues in and around the lesion sites opposing to growth promoting factors. Here starts a complex game of interactions between the signalling pathways controlling oligodendrocytes migration or differentiation. Receptors of positive or negative cues are modulating Ras, PI3K or RhoGTPases pathways acting on oligodendrocyte cytoskeleton remodelling. From the description of this intricate signalling network, this review addresses the extent to which the modulation of the global response to inhibitory cues may pave the route towards novel therapeutic approaches for myelin repair.
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Affiliation(s)
- Fabien Binamé
- INSERM U1119, Biopathology of Myelin, Neuroprotection and Therapeutic Strategy (BMNST Lab), Labex Medalis, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Pôle API, Ecole Supérieure de Biotechnologie, 300 Boulevard Sébastien Brant, 67412, Illkirch, France
| | - Lucas D Pham-Van
- INSERM U1119, Biopathology of Myelin, Neuroprotection and Therapeutic Strategy (BMNST Lab), Labex Medalis, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Pôle API, Ecole Supérieure de Biotechnologie, 300 Boulevard Sébastien Brant, 67412, Illkirch, France
| | - Dominique Bagnard
- INSERM U1119, Biopathology of Myelin, Neuroprotection and Therapeutic Strategy (BMNST Lab), Labex Medalis, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Pôle API, Ecole Supérieure de Biotechnologie, 300 Boulevard Sébastien Brant, 67412, Illkirch, France.
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17
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Zullo KM, Douglas B, Maloney NM, Ji Y, Wei Y, Herbine K, Cohen R, Pastore C, Cramer Z, Wang X, Wei W, Somsouk M, Hung LY, Lengner C, Kohanski MH, Cohen NA, Herbert DR. LINGO3 regulates mucosal tissue regeneration and promotes TFF2 dependent recovery from colitis. Scand J Gastroenterol 2021; 56:791-805. [PMID: 33941035 PMCID: PMC8647134 DOI: 10.1080/00365521.2021.1917650] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Aim: Recovery of damaged mucosal surfaces following inflammatory insult requires diverse regenerative mechanisms that remain poorly defined. Previously, we demonstrated that the reparative actions of Trefoil Factor 3 (TFF3) depend upon the enigmatic receptor, leucine rich repeat and immunoglobulin-like domain containing nogo receptor 2 (LINGO2). This study examined the related orphan receptor LINGO3 in the context of intestinal tissue damage to determine whether LINGO family members are generally important for mucosal wound healing and maintenance of the intestinal stem cell (ISC) compartment needed for turnover of mucosal epithelium.Methods and Results: We find that LINGO3 is broadly expressed on human enterocytes and sparsely on discrete cells within the crypt niche, that contains ISCs. Loss of function studies indicate that LINGO3 is involved in recovery of normal intestinal architecture following dextran sodium sulfate (DSS)-induced colitis, and that LINGO3 is needed for therapeutic action of the long acting TFF2 fusion protein (TFF2-Fc), including a number of signaling pathways critical for cell proliferation and wound repair. LINGO3-TFF2 protein-protein interactions were relatively weak however and LINGO3 was only partially responsible for TFF2 induced MAPK signaling suggesting additional un-identified components of a receptor complex. However, deficiency in either TFF2 or LINGO3 abrogated budding/growth of intestinal organoids and reduced expression of the intestinal ISC gene leucine-rich repeat-containing G-protein coupled receptor 5 (LGR5), indicating homologous roles for these proteins in tissue regeneration, possibly via regulation of ISCs in the crypt niche.Conclusion: We propose that LINGO3 serves a previously unappreciated role in promoting mucosal wound healing.
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Affiliation(s)
- Kelly M. Zullo
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA 19104
| | - Bonnie Douglas
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA 19104
| | - Nicole M. Maloney
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA 19104
| | - Yingbiao Ji
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA 19104
| | - Yun Wei
- Department of Medicine, Division of Experimental Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Karl Herbine
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA 19104
| | - Rachel Cohen
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA 19104
| | - Christopher Pastore
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA 19104
| | - Zvi Cramer
- Department of Biomedical Sciences, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA 19104
| | - Xin Wang
- Department of Biomedical Sciences, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA 19104
| | - Wenjie Wei
- Department of Ophthalmology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19147
| | - Ma Somsouk
- Department of Pathology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Li Yin Hung
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA 19104,Department of Medicine, Division of Experimental Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Christopher Lengner
- Department of Biomedical Sciences, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA 19104
| | - Michael H. Kohanski
- Department of Otorhinolaryngology—Head and Neck Surgery, Perelman School of Medicine at The University of Pennsylvania, Philadelphia, PA 19104,The Corporal Michael J. Crescenz VA Medical Center Surgical Service, Philadelphia, PA 19104
| | - Noam A. Cohen
- Department of Otorhinolaryngology—Head and Neck Surgery, Perelman School of Medicine at The University of Pennsylvania, Philadelphia, PA 19104,The Corporal Michael J. Crescenz VA Medical Center Surgical Service, Philadelphia, PA 19104,Monell Chemical Senses Center, Philadelphia, PA 19104
| | - De’Broski R. Herbert
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA 19104,Department of Medicine, Division of Experimental Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
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18
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He Q, Jiang L, Zhang Y, Yang H, Zhou CN, Xie YH, Luo YM, Zhang SS, Zhu L, Guo YJ, Deng YH, Liang X, Xiao Q, Zhang L, Tang J, Huang DJ, Zhou YN, Dou XY, Chao FL, Tang Y. Anti-LINGO-1 antibody ameliorates cognitive impairment, promotes adult hippocampal neurogenesis, and increases the abundance of CB1R-rich CCK-GABAergic interneurons in AD mice. Neurobiol Dis 2021; 156:105406. [PMID: 34044148 DOI: 10.1016/j.nbd.2021.105406] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 04/29/2021] [Accepted: 05/21/2021] [Indexed: 11/20/2022] Open
Abstract
In view of the negative regulatory effect of leucine-rich repeat and immunoglobulin-like domain-containing nogo receptor-interacting protein 1 (LINGO-1) on neurons, an antibody against LINGO-1 (anti-LINGO-1 antibody) was herein administered to 10-month-old APP/PS1 transgenic Alzheimer's disease (AD) mice for 2 months as an experimental intervention. Behavioral, stereology, immunohistochemistry and immunofluorescence analyses revealed that the anti-LINGO-1 antibody significantly improved the cognitive abilities, promoted adult hippocampal neurogenesis (AHN), decreased the amyloid beta (Aβ) deposition, enlarged the hippocampal volume, and increased the numbers of total neurons and GABAergic interneurons, including GABAergic and CCK-GABAergic interneurons rich in cannabinoid type 1 receptor (CB1R), in the hippocampus of AD mice. In contrast, this intervention significantly reduced the number of GABAergic interneurons expressing LINGO-1 and CB1R in the hippocampus of AD mice. More importantly, we also found a negative correlation between LINGO-1 and CB1R on GABAergic interneurons in the hippocampus of AD mice, while the anti-LINGO-1 antibody reversed this relationship. These results indicated that LINGO-1 plays an important role in the process of hippocampal neuron loss in AD mice and that antagonizing LINGO-1 can effectively prevent hippocampal neuron loss and promote AHN. The improvement in cognitive abilities may be attributed to the improvement in AHN, and in the numbers of GABAergic interneurons and CCK-GABAergic interneurons rich in CB1Rs in the hippocampus of AD mice induced by the anti-LINGO-1 antibody. Collectively, the double target effect (LINGO-1 and CB1R) initiated by the anti-LINGO-1 antibody may provide an important basis for the study of drugs for the prevention and treatment of AD in the future.
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Affiliation(s)
- Qi He
- Department of Histology and Embryology, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China
| | - Lin Jiang
- Experimental Teaching Management Center, Chongqing Medical University, Chongqing 400016, PR China
| | - Yi Zhang
- Department of Laboratory Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, PR China
| | - Hao Yang
- Department of Histology and Embryology, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China
| | - Chun-Ni Zhou
- Department of Histology and Embryology, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China
| | - Yu-Han Xie
- Department of Histology and Embryology, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China
| | - Yan-Min Luo
- Department of Physiology, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China
| | - Shan-Shan Zhang
- Department of Histology and Embryology, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China
| | - Lin Zhu
- Department of Histology and Embryology, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China
| | - Yi-Jing Guo
- Department of Histology and Embryology, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China
| | - Yu-Hui Deng
- Department of Histology and Embryology, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China
| | - Xin Liang
- Department of Pathophysiology, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China
| | - Qian Xiao
- Department of Radioactive Medicine, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China
| | - Lei Zhang
- Department of Histology and Embryology, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China
| | - Jing Tang
- Department of Histology and Embryology, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China
| | - Du-Juan Huang
- Department of Histology and Embryology, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China
| | - Yu-Ning Zhou
- Department of Histology and Embryology, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China
| | - Xiao-Yun Dou
- Institute of Life Sciences, Chongqing Medical University, Chongqing 400016, PR China
| | - Feng-Lei Chao
- Department of Histology and Embryology, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China.
| | - Yong Tang
- Department of Histology and Embryology, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, PR China.
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19
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Hanf KJM, Arndt JW, Liu Y, Gong BJ, Rushe M, Sopko R, Massol R, Smith B, Gao Y, Dalkilic-Liddle I, Lee X, Mojta S, Shao Z, Mi S, Pepinsky RB. Functional activity of anti-LINGO-1 antibody opicinumab requires target engagement at a secondary binding site. MAbs 2021; 12:1713648. [PMID: 31928294 PMCID: PMC6973334 DOI: 10.1080/19420862.2020.1713648] [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: 02/06/2023] Open
Abstract
LINGO-1 is a membrane protein of the central nervous system (CNS) that suppresses myelination of axons. Preclinical studies have revealed that blockade of LINGO-1 function leads to CNS repair in demyelinating animal models. The anti-LINGO-1 antibody Li81 (opicinumab), which blocks LINGO-1 function and shows robust remyelinating activity in animal models, is currently being investigated in a Phase 2 clinical trial as a potential treatment for individuals with relapsing forms of multiple sclerosis (AFFINITY: clinical trial.gov number NCT03222973). Li81 has the unusual feature that it contains two LINGO-1 binding sites: a classical site utilizing its complementarity-determining regions and a cryptic secondary site involving Li81 light chain framework residues that recruits a second LINGO-1 molecule only after engagement of the primary binding site. Concurrent binding at both sites leads to formation of a 2:2 complex of LINGO-1 with the Li81 antigen-binding fragment, and higher order complexes with intact Li81 antibody. To elucidate the role of the secondary binding site, we designed a series of Li81 variant constructs that eliminate it while retaining the classic site contacts. These Li81 mutants retained the high affinity binding to LINGO-1, but lost the antibody-induced oligodendrocyte progenitor cell (OPC) differentiation activity and myelination activity in OPC- dorsal root ganglion neuron cocultures seen with Li81. The mutations also attenuate antibody-induced internalization of LINGO-1 on cultured cortical neurons, OPCs, and cells over-expressing LINGO-1. Together these studies reveal that engagement at both LINGO-1 binding sites of Li81 is critical for robust functional activity of the antibody.
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Affiliation(s)
- Karl J M Hanf
- Biotherapeutic and Medicinal Sciences, Biogen, Cambridge, MA, USA
| | - Joseph W Arndt
- Biotherapeutic and Medicinal Sciences, Biogen, Cambridge, MA, USA
| | - YuTing Liu
- Biotherapeutic and Medicinal Sciences, Biogen, Cambridge, MA, USA
| | - Bang Jian Gong
- Biotherapeutic and Medicinal Sciences, Biogen, Cambridge, MA, USA
| | - Mia Rushe
- Biotherapeutic and Medicinal Sciences, Biogen, Cambridge, MA, USA
| | - Richelle Sopko
- Biotherapeutic and Medicinal Sciences, Biogen, Cambridge, MA, USA
| | - Ramiro Massol
- Research and Early Development, Biogen, Cambridge, MA, USA
| | - Benjamin Smith
- Biotherapeutic and Medicinal Sciences, Biogen, Cambridge, MA, USA
| | - Yan Gao
- Research and Early Development, Biogen, Cambridge, MA, USA
| | | | - Xinhua Lee
- Research and Early Development, Biogen, Cambridge, MA, USA
| | - Shanell Mojta
- Biotherapeutic and Medicinal Sciences, Biogen, Cambridge, MA, USA
| | - Zhaohui Shao
- Research and Early Development, Biogen, Cambridge, MA, USA
| | - Sha Mi
- Research and Early Development, Biogen, Cambridge, MA, USA
| | - R Blake Pepinsky
- Biotherapeutic and Medicinal Sciences, Biogen, Cambridge, MA, USA
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20
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Guillemain A, Laouarem Y, Cobret L, Štefok D, Chen W, Bloch S, Zahaf A, Blot L, Reverchon F, Normand T, Decoville M, Grillon C, Traiffort E, Morisset-Lopez S. LINGO family receptors are differentially expressed in the mouse brain and form native multimeric complexes. FASEB J 2020; 34:13641-13653. [PMID: 32862444 DOI: 10.1096/fj.202000826r] [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: 04/07/2020] [Revised: 07/10/2020] [Accepted: 07/29/2020] [Indexed: 11/11/2022]
Abstract
Leucine-rich repeat and immunoglobin-domain containing (LRRIG) proteins that are commonly involved in protein-protein interactions play important roles in nervous system development and maintenance. LINGO-1, one of this family members, is characterized as a negative regulator of neuronal survival, axonal regeneration, and oligodendrocyte precursor cell (OPC) differentiation into mature myelinating oligodendrocytes. Three LINGO-1 homologs named LINGO-2, LINGO-3, and LINGO-4 have been described. However, their relative expression and functions remain unexplored. Here, we show by in situ hybridization and quantitative polymerase chain reaction that the transcripts of LINGO homologs are differentially expressed in the central nervous system. The immunostaining of brain slices confirmed this observation and showed the co-expression of LINGO-1 with its homologs. Using BRET (bioluminescence resonance energy transfer) analysis, we demonstrate that LINGO proteins can physically interact with each of the other ones with comparable affinities and thus form the oligomeric states. Furthermore, co-immunoprecipitation experiments indicate that LINGO proteins form heterocomplexes in both heterologous systems and cortical neurons. Since LINGO-1 is a promising target for the treatment of demyelinating diseases, its ability to form heteromeric complexes reveals a new level of complexity in its functioning and opens the way for new strategies to achieve diverse and nuanced LINGO-1 regulation.
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Affiliation(s)
- Anthony Guillemain
- Centre de Biophysique Moléculaire (CBM), CNRS, UPR 4301, Université d'Orléans et INSERM, Orléans Cedex 02, France
| | - Yousra Laouarem
- Diseases and Hormones of the Nervous System U1195, INSERM-Paris Saclay University, Le Kremlin-Bicêtre, France
| | - Laetitia Cobret
- Centre de Biophysique Moléculaire (CBM), CNRS, UPR 4301, Université d'Orléans et INSERM, Orléans Cedex 02, France
| | - Dora Štefok
- Centre de Biophysique Moléculaire (CBM), CNRS, UPR 4301, Université d'Orléans et INSERM, Orléans Cedex 02, France
| | - Wanyin Chen
- Centre de Biophysique Moléculaire (CBM), CNRS, UPR 4301, Université d'Orléans et INSERM, Orléans Cedex 02, France
| | - Solal Bloch
- Diseases and Hormones of the Nervous System U1195, INSERM-Paris Saclay University, Le Kremlin-Bicêtre, France
| | - Amina Zahaf
- Diseases and Hormones of the Nervous System U1195, INSERM-Paris Saclay University, Le Kremlin-Bicêtre, France
| | - Lauren Blot
- Centre de Biophysique Moléculaire (CBM), CNRS, UPR 4301, Université d'Orléans et INSERM, Orléans Cedex 02, France
| | - Flora Reverchon
- Centre de Biophysique Moléculaire (CBM), CNRS, UPR 4301, Université d'Orléans et INSERM, Orléans Cedex 02, France
| | - Thierry Normand
- Centre de Biophysique Moléculaire (CBM), CNRS, UPR 4301, Université d'Orléans et INSERM, Orléans Cedex 02, France
| | - Martine Decoville
- Centre de Biophysique Moléculaire (CBM), CNRS, UPR 4301, Université d'Orléans et INSERM, Orléans Cedex 02, France
| | - Catherine Grillon
- Centre de Biophysique Moléculaire (CBM), CNRS, UPR 4301, Université d'Orléans et INSERM, Orléans Cedex 02, France
| | - Elisabeth Traiffort
- Diseases and Hormones of the Nervous System U1195, INSERM-Paris Saclay University, Le Kremlin-Bicêtre, France
| | - Séverine Morisset-Lopez
- Centre de Biophysique Moléculaire (CBM), CNRS, UPR 4301, Université d'Orléans et INSERM, Orléans Cedex 02, France
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21
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Wu Y, Zhan Z, Quan Y, Yang Y, Chen X, Liu L, Wu K, Yu M. SP1-mediated upregulation of LINGO-1 promotes degeneration of retinal ganglion cells in optic nerve injury. CNS Neurosci Ther 2020; 26:1010-1020. [PMID: 32562344 PMCID: PMC7539844 DOI: 10.1111/cns.13426] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 04/27/2020] [Accepted: 05/20/2020] [Indexed: 12/15/2022] Open
Abstract
Backgrounds Insults to the axons in the optic nerve head are the primary cause of loss of retinal ganglion cells (RGCs) in traumatic, ischemic nerve injury or degenerative ocular diseases. The central nervous system–specific leucine‐rich repeat protein, LINGO‐1, negatively regulates axon regeneration and neuronal survival after injury. However, the upstream molecular mechanisms that regulate LINGO‐1 signaling and contribute to LINGO‐1–mediated death of RGCs are unclear. Methods The expression of SP1 was profiled in optic nerve crush (ONC)–injured RGCs. LINGO‐1 level was examined after SP1 overexpression by qRT‐PCR. Luciferase assay was used to examine the binding of SP1 to the promoter regions of LINGO‐1. Primary RGCs from rat retina were isolated by immunopanning and RGCs apoptosis were determined by Tunnel. SP1 and LINGO‐1 expression was investigated using immunohistochemistry and Western bolting. Neuroprotection was assessed by RGC counts, RNFL thickness, and VEP tests after inhibition of SP1 shRNA. Results We demonstrate that SP1 was upregulated in ONC‐injured RGCs. SP1 was bound to the LINGO‐1 promoter, which led to increased expression of LINGO‐1. Treatment with recombinant Nogo‐66 or LINGO‐1 promoted apoptosis of RGCs cultured under serum‐deprivation conditions, while silencing of SP1 promoted the survival of RGCs. SP1 and LINGO‐1 colocalized and were upregulated in ONC‐injured retinas. Silencing of SP1 in vivo reduced LINGO‐1 expression and protected the structure of RGCs from ONC‐induced injury, but there was no sign of recovery in VEP. Conclusions Our findings imply that SP1 regulates LINGO‐1 expression in RGCs in the injured retina and provide insight into mechanisms underlying LINGO‐1–mediated RGC death in optic nerve injury.
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Affiliation(s)
- Yali Wu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Zongyi Zhan
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Yadan Quan
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Yangfan Yang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Xiaotao Chen
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Liling Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Kaili Wu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Minbin Yu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
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22
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Wu H, Ding L, Wang Y, Zou TB, Wang T, Fu W, Lin Y, Zhang X, Chen K, Lei Y, Zhong C, Luo C. MiR-615 Regulates NSC Differentiation In Vitro and Contributes to Spinal Cord Injury Repair by Targeting LINGO-1. Mol Neurobiol 2020; 57:3057-3074. [PMID: 32462552 DOI: 10.1007/s12035-020-01936-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 05/13/2020] [Indexed: 01/25/2023]
Abstract
LINGO-1(LRR and Ig domain-containing NOGO receptor interacting protein 1) is a viable target for spinal cord injury (SCI) repair due to its potent negative regulation in neuron survival and axonal regeneration. Although promising, the intracellular mechanism underlying LINGO-1 regulation is unclear. Here, we identified miR-615 as a potential microRNA (miRNA) that directly targets LINGO-1 by binding its 3'-untranslated region (3'-UTR) and caused the translation inhibition of LINGO-1. MiR-615 negatively regulated LINGO-1 during neural stem cell (NSC) differentiation and facilitated its neuronal differentiation in vitro. Interestingly, compared to the control, neurons differentiated from miR-615-treated NSCs were immature with short processes. Further results showed LINGO-1/epidermal growth factor receptor (EGFR) signaling may be involved in this process, as blockade of EGFR using specific antagonist resulted in mature neurons with long processes. Furthermore, intrathecal administration of miR-615 agomir in SCI rats effectively knocked down LINGO-1, increased neuronal survival, enhanced axonal extension and myelination, and improved recovery of hindlimbs motor functions. This work thus uncovers miR-615 as an effective miRNA that regulates LINGO-1 in NSC and SCI animals, and suggests miR-615 as a potential therapeutic target for traumatic central nervous system (CNS) injury.
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Affiliation(s)
- Hongfu Wu
- Institute of Stem Cells and Regenerative Medicine, Department of Physiology, Guangdong Medical University, No. 1, Xin Cheng Road, Songshan Lake, Dongguan, 523808, China.
| | - Lu Ding
- Institute of Stem Cells and Regenerative Medicine, Department of Physiology, Guangdong Medical University, No. 1, Xin Cheng Road, Songshan Lake, Dongguan, 523808, China.,Scientific Research Center, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, China
| | - Yuhui Wang
- Department of Surgery, The Third Hospital of Guangdong Medical University (Longjiang Hospital of Shunde District), Foshan, Guangdong, China
| | - Tang-Bin Zou
- Department of Nutrition and Food Hygiene, Guangdong Medical University, Dongguan, China
| | - Tao Wang
- Department of Surgery, The Third Hospital of Guangdong Medical University (Longjiang Hospital of Shunde District), Foshan, Guangdong, China
| | - Wenjin Fu
- Clinical Laboratory, Dongguan Municipal Houjie Hospital of Guangdong Medical University, Dongguan, Guangdong, China
| | - Yong Lin
- Department of Surgery, The Third Hospital of Guangdong Medical University (Longjiang Hospital of Shunde District), Foshan, Guangdong, China
| | - Xiaomin Zhang
- Institute of Stem Cells and Regenerative Medicine, Department of Physiology, Guangdong Medical University, No. 1, Xin Cheng Road, Songshan Lake, Dongguan, 523808, China
| | - Kangzhen Chen
- Institute of Stem Cells and Regenerative Medicine, Department of Physiology, Guangdong Medical University, No. 1, Xin Cheng Road, Songshan Lake, Dongguan, 523808, China
| | - Yutian Lei
- Hand & Foot Surgery, Dongguan Municipal Houjie Hospital of Guangdong Medical University, Dongguan, Guangdong, China
| | - Caitang Zhong
- Department of Surgery, The Third Hospital of Guangdong Medical University (Longjiang Hospital of Shunde District), Foshan, Guangdong, China
| | - Chuanming Luo
- Department of Neurology, The Seventh Affiliated Hospital, Sun Yat-Sen University, No.628, Zhenyuan Road, Xinhu Street, Guangming New District, Shenzhen, 518107, China.
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23
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Expression of Nogo-A in dorsal root ganglion in rats with cauda equina injury. Biochem Biophys Res Commun 2020; 527:131-137. [PMID: 32446356 DOI: 10.1016/j.bbrc.2020.04.094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 04/17/2020] [Indexed: 11/21/2022]
Abstract
OBJECTIVE To investigate the expression of Nogo-A in dorsal root ganglion (DRG) in rats with cauda equina injury and the therapeutic effects of blocking Nogo-A and its receptor. METHODS AND MATERIALS Fifty-eight male Sprague-Dawley rats were divided randomly into either the sham operation group (n = 24) or the cauda equina compression (CEC) control group (n = 34). Behavioral, histological, and terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) analyses were conducted to assess the establishment of the model. The dynamic expression change of Nogo-A was evaluated using real time-qPCR. Immunofluorescence was used to evaluate the expression of Nogo-A in the DRG and cauda equina. Furthermore, 20 male Sprague-Dawley rats were equally divided into 4 groups, including the sham group, the CEC group, the NEP1-40 (the NgR antagonist peptide) treatment group, and the JTE-013 (the S1PR2 antagonist) treatment group. Behavioral assessments and western blotting were used to evaluate the therapeutic effect of cauda equina injury via blocking Nogo-A and its receptor. RESULTS Tactile allodynia and heat hyperalgesia in the CEC model developed as soon as 1 day after surgery and recovered to normal at 7 days, which was followed by the downregulation of Nogo-A in DRG neurons. However, the locomotor function impairment in the CEC model showed a different prognosis from the sensory function, which was consistent with the expression change of Nogo-A in the spinal cord. Immunofluorescence results also demonstrated that Nogo A-positive/NF200-negative neurons and axons increased in the DRG and cauda equina 7 days after surgery. Surprisingly, Schwann cells, which myelinate axons in the PNS, also expressed considerable amounts of Nogo-A. Then, after blocking the Nogo-A/NgR signaling pathway by NEP1-40, significant improvement of mechanical allodynia was identified in the first 2 days after the surgery. Western blotting suggested the NEP1-40 treatment group had lower expression of cleaved caspase-3 than the CEC and JTE-013 treatment group. CONCLUSION Neuronal Nogo-A in the DRG may be involved in regeneration and play a protective role in the CEC model. Whereas Nogo-A, released from the injured axons or expressed by Schwann cells, may act as an inhibiting factor in the process of CEC repairment. Thus, blocking the Nogo-A/NgR signaling pathway can alleviate mechanical allodynia by apoptosis inhibition.
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LINGO1 is a regulatory subunit of large conductance, Ca 2+-activated potassium channels. Proc Natl Acad Sci U S A 2020; 117:2194-2200. [PMID: 31932443 PMCID: PMC6994976 DOI: 10.1073/pnas.1916715117] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Large conductance calcium-activated potassium (BK) channels are ubiquitously expressed and alter cellular excitability. These channels are formed by four pore-forming α subunits whose biophysical and pharmacological properties are modulated by regulatory β and γ subunits. LINGO1 is a protein, previously shown to be upregulated in both Parkinson’s disease and Essential Tremor. Consequently, we investigated its effects on BK channels and demonstrate that LINGO1 associates with these channels in human cerebellum. LINGO1 causes BK channels to inactivate and to open at more negative potentials. Furthermore, coexpression of BK with LINGO1 also led to a reduction in BK channels in the membrane. Our data support the idea that LINGO1 is a regulatory subunit of BK channels. LINGO1 is a transmembrane protein that is up-regulated in the cerebellum of patients with Parkinson’s disease (PD) and Essential Tremor (ET). Patients with additional copies of the LINGO1 gene also present with tremor. Pharmacological or genetic ablation of large conductance Ca2+-activated K+ (BK) channels also result in tremor and motor disorders. We hypothesized that LINGO1 is a regulatory BK channel subunit. We show that 1) LINGO1 coimmunoprecipitated with BK channels in human brain, 2) coexpression of LINGO1 and BK channels resulted in rapidly inactivating BK currents, and 3) LINGO1 reduced the membrane surface expression of BK channels. These results suggest that LINGO1 is a regulator of BK channels, which causes a “functional knockdown” of these currents and may contribute to the tremor associated with increased LINGO1 levels.
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25
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Quan Y, Wu Y, Zhan Z, Yang Y, Chen X, Wu K, Yu M. Inhibition of the leucine-rich repeat protein lingo-1 enhances RGC survival in optic nerve injury. Exp Ther Med 2019; 19:619-629. [PMID: 31885701 PMCID: PMC6913235 DOI: 10.3892/etm.2019.8250] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 03/26/2019] [Indexed: 01/02/2023] Open
Abstract
Leucine-rich repeat and immunoglobulin-like domain-containing nogo receptor-interacting protein 1 (lingo-1) is selectively expressed on neurons and oligodendrocytes in the central nervous system and acts as a negative regulator in neural repair, implying a potential role in optic neuropathy. The aim of the present study was to determine whether adeno-associated virus serotype 2 (AAV2) vector-mediated transfer of lingo-1 short hairpin RNA could reduce nerve crush-induced axonal degeneration and enhance axonal regeneration following optic nerve (ON) injury in vivo. The expression of lingo-1 was knocked down in vivo using a green fluorescent protein (GFP)-tagged AAV2 encoding lingo-1 shRNA via intravitreal injection in adult Sprague-Dawley rats. Silencing effects of AAV2-lingo-1-shRNA were confirmed by detecting GFP labelling of RGCs, and by quantifying lingo-1 expression levels with reverse transcription-quantitative polymerase chain reaction and western blotting. Rats received an intravitreal injection of AAV2-lingo-1-shRNA or negative control shRNA. The ON crush (ONC) injury was performed 2 weeks after the intravitreal injection. RGC density, lesion volume of the injured ON and the visual electrophysiology [flash visual evoked potential (F-VEP)] at different time points post-injury were determined. Transduction with lingo-1-shRNA decreased lingo-1 expression levels and promoted RGC survival following ONC. Lingo-1-shRNA promoted ON tissue repair and functional recovery. The mechanism underlying the effect of AAV2-lingo-1-shRNA on RGCs may be the phosphorylation of protein kinase B (Akt) at Ser473 and activation of the Akt signaling pathway acting downstream of lingo-1. The results of the current study indicate that the inhibition of lingo-1 may enhance RGC survival and facilitate functional recovery following ON injury, representing a promising potential strategy for the repair of optic neuropathy.
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Affiliation(s)
- Yadan Quan
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Yali Wu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Zongyi Zhan
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Yangfan Yang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Xiaotao Chen
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Kaili Wu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Minbin Yu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong 510060, P.R. China
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26
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Belle NM, Ji Y, Herbine K, Wei Y, Park J, Zullo K, Hung LY, Srivatsa S, Young T, Oniskey T, Pastore C, Nieves W, Somsouk M, Herbert DR. TFF3 interacts with LINGO2 to regulate EGFR activation for protection against colitis and gastrointestinal helminths. Nat Commun 2019; 10:4408. [PMID: 31562318 PMCID: PMC6764942 DOI: 10.1038/s41467-019-12315-1] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Accepted: 08/26/2019] [Indexed: 12/14/2022] Open
Abstract
Intestinal epithelial cells (IEC) have important functions in nutrient absorption, barrier integrity, regeneration, pathogen-sensing, and mucus secretion. Goblet cells are a specialized cell type of IEC that secrete Trefoil factor 3 (TFF3) to regulate mucus viscosity and wound healing, but whether TFF3-responsiveness requires a receptor is unclear. Here, we show that leucine rich repeat receptor and nogo-interacting protein 2 (LINGO2) is essential for TFF3-mediated functions. LINGO2 immunoprecipitates with TFF3, co-localizes with TFF3 on the cell membrane of IEC, and allows TFF3 to block apoptosis. We further show that TFF3-LINGO2 interactions disrupt EGFR-LINGO2 complexes resulting in enhanced EGFR signaling. Excessive basal EGFR activation in Lingo2 deficient mice increases disease severity during colitis and augments immunity against helminth infection. Conversely, TFF3 deficiency reduces helminth immunity. Thus, TFF3-LINGO2 interactions de-repress inhibitory LINGO2-EGFR complexes, allowing TFF3 to drive wound healing and immunity.
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Affiliation(s)
- Nicole Maloney Belle
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA, 19140, USA
| | - Yingbiao Ji
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA, 19140, USA
| | - Karl Herbine
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA, 19140, USA
| | - Yun Wei
- Division of Experimental Medicine, University of California, San Francisco, San Francisco, CA, 94110, USA.,Department of Inflammation and Oncology, Amgen Inc., 1120 Veterans Boulevard, South San Francisco, CA, 94080, USA
| | - JoonHyung Park
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA, 19140, USA
| | - Kelly Zullo
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA, 19140, USA
| | - Li-Yin Hung
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA, 19140, USA.,Division of Experimental Medicine, University of California, San Francisco, San Francisco, CA, 94110, USA
| | - Sriram Srivatsa
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA, 19140, USA
| | - Tanner Young
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA, 19140, USA
| | - Taylor Oniskey
- Division of Experimental Medicine, University of California, San Francisco, San Francisco, CA, 94110, USA
| | - Christopher Pastore
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA, 19140, USA
| | - Wildaliz Nieves
- Division of Gastroenterology at ZSFG, University of California, San Francisco, San Francisco, CA, 94110, USA
| | - Ma Somsouk
- Division of Gastroenterology at ZSFG, University of California, San Francisco, San Francisco, CA, 94110, USA
| | - De'Broski R Herbert
- Department of Pathobiology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA, 19140, USA. .,Division of Experimental Medicine, University of California, San Francisco, San Francisco, CA, 94110, USA.
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27
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Huang LJ, Li G, Ding Y, Sun JH, Wu TT, Zhao W, Zeng YS. LINGO-1 deficiency promotes nerve regeneration through reduction of cell apoptosis, inflammation, and glial scar after spinal cord injury in mice. Exp Neurol 2019; 320:112965. [PMID: 31132364 DOI: 10.1016/j.expneurol.2019.112965] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 05/14/2019] [Accepted: 05/23/2019] [Indexed: 12/16/2022]
Abstract
Leucine-rich repeat and immunoglobulin domain-containing protein 1 (LINGO-1) is a transmembrane protein that negatively regulates neural regeneration in the central nervous system. LINGO-1 expression is up-regulated after central nerve injury, and is accompanied by cell death. Both LINGO-1 and cell death in the injury microenvironment are thought to limit neural regeneration, but the relationship between LINGO-1 and cell death has not been characterized. To investigate whether LINGO-1 deletion improves the spinal cord microenvironment after spinal cord injury (SCI) and contributes to cell survival, we generated LINGO-1 knockout (KO) mice. These mice and wild-type control mice were subjected to spinal cord transection. Fourteen days after spinal cord transection, cell apoptosis, inflammation, glial scar, and growth of nerve fibers were evaluated by immunostaining. The results showed that LINGO-1 KO mice demonstrated a profound reduction in expression of caspase-3, transferase-mediated deoxyuridine triphosphate biotin nick end labeling (TUNEL), ionized calcium binding adapter molecule 1 (IBA1), glial fibrillary acidic protein (GFAP), and chondroitin sulfate proteoglycans (CSPGs) compared to controls. In contrast, expression of neurofilament (NF) at the SCI site in LINGO-1 KO mice was markedly increased compared to that in wild-type mice. These results suggested that LINGO-1 plays a critical role in the injury microenvironment in processes such as cell death, inflammatory response, and glial scar formation. Importantly, LINGO-1 deletion and a positive microenvironment may exert synergistic effects to promote nerve fiber regeneration. Therefore, inhibition of LINGO-1 may be a therapeutic strategy to promote neural regeneration following SCI.
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Affiliation(s)
- Li-Jun Huang
- Key Laboratory for Stem Cells and Tissue Engineering (Sun Yat-sen University), Ministry of Education, Guangzhou 510080, China; Department of Histology and Embryology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China
| | - Ge Li
- Key Laboratory for Stem Cells and Tissue Engineering (Sun Yat-sen University), Ministry of Education, Guangzhou 510080, China; Department of Histology and Embryology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China
| | - Ying Ding
- Key Laboratory for Stem Cells and Tissue Engineering (Sun Yat-sen University), Ministry of Education, Guangzhou 510080, China
| | - Jia-Hui Sun
- Key Laboratory for Stem Cells and Tissue Engineering (Sun Yat-sen University), Ministry of Education, Guangzhou 510080, China; Department of Histology and Embryology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China
| | - Ting-Ting Wu
- Department of Histology and Embryology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China
| | - Wei Zhao
- Key Laboratory for Stem Cells and Tissue Engineering (Sun Yat-sen University), Ministry of Education, Guangzhou 510080, China; Department of Histology and Embryology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China
| | - Yuan-Shan Zeng
- Key Laboratory for Stem Cells and Tissue Engineering (Sun Yat-sen University), Ministry of Education, Guangzhou 510080, China; Department of Histology and Embryology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China; Institute of Spinal Cord Injury, Sun Yat-sen University, Guangzhou 510120, China; Co-innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China; Guangdong Provincial Key Laboratory of Brain Function and Disease, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China.
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28
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Ding L, Zhu Z, Wang Y, Zeng L, Wang T, Luo J, Zou TB, Li R, Sun X, Zhou G, Liu X, Wu HF. LINGO-1 shRNA Loaded by Pluronic F-127 Promotes Functional Recovery After Ventral Root Avulsion. Tissue Eng Part A 2019; 25:1381-1395. [PMID: 30794055 DOI: 10.1089/ten.tea.2018.0282] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Spinal root avulsion typically leads to massive motoneuron death and severe functional deficits of the target muscles. Multiple pathological factors such as severe neuron loss, induction of inhibitory molecules, and insufficient regeneration are responsible for the poor functional recovery. Leucine-rich repeat and immunoglobulin-like domain-containing Nogo receptor-interacting protein 1 (LINGO-1), a central nervous system (CNS)-specific transmembrane protein that is selectively expressed on neurons and oligodendrocytes, serves as a potent negative mediator of axonal regeneration and myelination in CNS injuries and diseases. Although accumulating evidence has demonstrated improvement in axonal regeneration and neurological functions by LINGO-1 antagonism in CNS damage, the possible effects of LINGO-1 in spinal root avulsion remain undiscovered. In this study, a LINGO-1 knockdown strategy using lentiviral vectors encoding LINGO-1 short hairpin interfering RNA (shRNA) delivered by the Pluronic F-127 (PF-127) hydrogel was described after brachial plexus avulsion (BPA). We provide evidence that following BPA and immediate reimplantation, transplantation of LINGO-1 shRNA lentiviral vectors encapsulated by PF-127 rescued the injured motoneurons, enhanced axonal outgrowth and myelination, rebuilt motor endplates, facilitated the reinnervation of terminal muscles, improved angiogenesis, and promoted recovery of avulsed forelimbs. Altogether, these data suggest that delivery of LINGO-1 shRNA by a gel scaffold is a potential therapeutic approach for root avulsion. Impact Statement In this study, we attempted transplantation of lentivirus (LV)/leucine-rich repeat and immunoglobulin-like domain-containing Nogo receptor-interacting protein 1 (LINGO-1)-short hairpin interfering RNA (shRNA) encapsulated by the Pluronic F-127 (PF-127) hydrogel into a brachial plexus avulsion (BPA)-reimplantation model. We found that administration of LV/LINGO-1 shRNA facilitates neuron survival and axonal regeneration, attenuates muscle atrophy and motor endplate (MEP) loss, enhances neovascularization, and promotes functional recovery in BPA rats. Co-transplantation of LV/LINGO-1 shRNA and gel reinforces the survival-promoting effect, axonal outgrowth, and angiogenesis in comparison with LV/LINGO-1 shRNA application alone. Our research provides evidence that LV /LINGO-1 shRNA delivered by PF-127 represents a new treatment strategy for BPA repair.
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Affiliation(s)
- Lu Ding
- Department of Physiology, Institute of Stem Cells and Regenerative Medicine, Guangdong Medical University, Dongguan, China
| | - Zhe Zhu
- Hand and Foot Surgery and Reparative and Reconstruction Surgery Center, The Second Hospital of Jilin University, Changchun, China
| | - Yuhui Wang
- Department of Surgery, The Third Affiliated Hospital of Guangdong Medical University (Longjiang Hospital of Shunde District), Foshan, Guangdong, China
| | - Lini Zeng
- Department of Physiology, Institute of Stem Cells and Regenerative Medicine, Guangdong Medical University, Dongguan, China
| | - Tao Wang
- Department of Surgery, The Third Affiliated Hospital of Guangdong Medical University (Longjiang Hospital of Shunde District), Foshan, Guangdong, China
| | - Jiang Luo
- Department of Surgery, The Third Affiliated Hospital of Guangdong Medical University (Longjiang Hospital of Shunde District), Foshan, Guangdong, China
| | - Tang-Bin Zou
- Department of Nutrition and Food Hygiene, Guangdong Medical University, Dongguan, China
| | - Rui Li
- Hand and Foot Surgery and Reparative and Reconstruction Surgery Center, The Second Hospital of Jilin University, Changchun, China
| | - Xuerong Sun
- Institute of Aging Research, Guangdong Medical University, Dongguan, China
| | - Guangji Zhou
- Department of Physiology, Institute of Stem Cells and Regenerative Medicine, Guangdong Medical University, Dongguan, China
| | - Xiaoqian Liu
- Department of Physiology, Institute of Stem Cells and Regenerative Medicine, Guangdong Medical University, Dongguan, China
| | - Hong-Fu Wu
- Department of Physiology, Institute of Stem Cells and Regenerative Medicine, Guangdong Medical University, Dongguan, China
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29
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Alakbarzade V, Iype T, Chioza BA, Singh R, Harlalka GV, Hardy H, Sreekantan-Nair A, Proukakis C, Peall K, Clark LN, Caswell R, Lango Allen H, Wakeling M, Chilton JK, Baple EL, Louis ED, Warner TT, Crosby AH. Copy number variation of LINGO1 in familial dystonic tremor. NEUROLOGY-GENETICS 2019; 5:e307. [PMID: 30842974 PMCID: PMC6384021 DOI: 10.1212/nxg.0000000000000307] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Accepted: 11/14/2018] [Indexed: 01/18/2023]
Abstract
Objective To elucidate the genetic cause of a large 5 generation South Indian family with multiple individuals with predominantly an upper limb postural tremor and posturing in keeping with another form of tremor, namely, dystonic tremor. Methods Whole-genome single nucleotide polymorphism (SNP) microarray analysis was undertaken to look for copy number variants in the affected individuals. Results Whole-genome SNP microarray studies identified a tandem duplicated genomic segment of chromosome 15q24 present in all affected family members. Whole-genome sequencing demonstrated that it comprised a ∼550-kb tandem duplication encompassing the entire LINGO1 gene. Conclusions The identification of a genomic duplication as the likely molecular cause of this condition, resulting in an additional LINGO1 gene copy in affected cases, adds further support for a causal role of this gene in tremor disorders and implicates increased expression levels of LINGO1 as a potential pathogenic mechanism.
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Affiliation(s)
- Vafa Alakbarzade
- Medical Research (Level 4) (V.A., B.A.C., G.V.H., H.H., A.S.-N., J.K.C., E.L.B., A.H.C.), University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon & Exeter NHS Foundation Trust, United Kingdom; Reta Lila Weston Institute of Neurological Studies (V.A., T.T.W.), UCL Institute of Neurology, London, United Kingdom; Department of Neurology (T.I.), Government Medical College, Thiruvananthapuram, Kerala, India; Department of Anatomy and Microbiology (R.S.), Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India; Clinical Neuroscience (C.P.), Royal Free Campus, UCL Institute of Neurology, London, United Kingdom; Institute of Psychological Medicine and Clinical Neurosciences (K.P.), Cardiff University, Cardiff, United Kingdom; Taub Institute for Research on Alzheimer's Disease and the Aging Brain (L.N.C.), Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY; Institute of Biomedical and Clinical Science (R.C., H.L.A., M.W.), University of Exeter Medical School, United Kingdom; and Departments of Neurology and Chronic Disease Epidemiology and Center for Neuroepidemiology and Clinical Neurological Research (E.D.L.), Yale School of Medicine and Yale School of Public Health, Yale University, New Haven, CT
| | - Thomas Iype
- Medical Research (Level 4) (V.A., B.A.C., G.V.H., H.H., A.S.-N., J.K.C., E.L.B., A.H.C.), University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon & Exeter NHS Foundation Trust, United Kingdom; Reta Lila Weston Institute of Neurological Studies (V.A., T.T.W.), UCL Institute of Neurology, London, United Kingdom; Department of Neurology (T.I.), Government Medical College, Thiruvananthapuram, Kerala, India; Department of Anatomy and Microbiology (R.S.), Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India; Clinical Neuroscience (C.P.), Royal Free Campus, UCL Institute of Neurology, London, United Kingdom; Institute of Psychological Medicine and Clinical Neurosciences (K.P.), Cardiff University, Cardiff, United Kingdom; Taub Institute for Research on Alzheimer's Disease and the Aging Brain (L.N.C.), Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY; Institute of Biomedical and Clinical Science (R.C., H.L.A., M.W.), University of Exeter Medical School, United Kingdom; and Departments of Neurology and Chronic Disease Epidemiology and Center for Neuroepidemiology and Clinical Neurological Research (E.D.L.), Yale School of Medicine and Yale School of Public Health, Yale University, New Haven, CT
| | - Barry A Chioza
- Medical Research (Level 4) (V.A., B.A.C., G.V.H., H.H., A.S.-N., J.K.C., E.L.B., A.H.C.), University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon & Exeter NHS Foundation Trust, United Kingdom; Reta Lila Weston Institute of Neurological Studies (V.A., T.T.W.), UCL Institute of Neurology, London, United Kingdom; Department of Neurology (T.I.), Government Medical College, Thiruvananthapuram, Kerala, India; Department of Anatomy and Microbiology (R.S.), Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India; Clinical Neuroscience (C.P.), Royal Free Campus, UCL Institute of Neurology, London, United Kingdom; Institute of Psychological Medicine and Clinical Neurosciences (K.P.), Cardiff University, Cardiff, United Kingdom; Taub Institute for Research on Alzheimer's Disease and the Aging Brain (L.N.C.), Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY; Institute of Biomedical and Clinical Science (R.C., H.L.A., M.W.), University of Exeter Medical School, United Kingdom; and Departments of Neurology and Chronic Disease Epidemiology and Center for Neuroepidemiology and Clinical Neurological Research (E.D.L.), Yale School of Medicine and Yale School of Public Health, Yale University, New Haven, CT
| | - Royana Singh
- Medical Research (Level 4) (V.A., B.A.C., G.V.H., H.H., A.S.-N., J.K.C., E.L.B., A.H.C.), University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon & Exeter NHS Foundation Trust, United Kingdom; Reta Lila Weston Institute of Neurological Studies (V.A., T.T.W.), UCL Institute of Neurology, London, United Kingdom; Department of Neurology (T.I.), Government Medical College, Thiruvananthapuram, Kerala, India; Department of Anatomy and Microbiology (R.S.), Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India; Clinical Neuroscience (C.P.), Royal Free Campus, UCL Institute of Neurology, London, United Kingdom; Institute of Psychological Medicine and Clinical Neurosciences (K.P.), Cardiff University, Cardiff, United Kingdom; Taub Institute for Research on Alzheimer's Disease and the Aging Brain (L.N.C.), Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY; Institute of Biomedical and Clinical Science (R.C., H.L.A., M.W.), University of Exeter Medical School, United Kingdom; and Departments of Neurology and Chronic Disease Epidemiology and Center for Neuroepidemiology and Clinical Neurological Research (E.D.L.), Yale School of Medicine and Yale School of Public Health, Yale University, New Haven, CT
| | - Gaurav V Harlalka
- Medical Research (Level 4) (V.A., B.A.C., G.V.H., H.H., A.S.-N., J.K.C., E.L.B., A.H.C.), University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon & Exeter NHS Foundation Trust, United Kingdom; Reta Lila Weston Institute of Neurological Studies (V.A., T.T.W.), UCL Institute of Neurology, London, United Kingdom; Department of Neurology (T.I.), Government Medical College, Thiruvananthapuram, Kerala, India; Department of Anatomy and Microbiology (R.S.), Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India; Clinical Neuroscience (C.P.), Royal Free Campus, UCL Institute of Neurology, London, United Kingdom; Institute of Psychological Medicine and Clinical Neurosciences (K.P.), Cardiff University, Cardiff, United Kingdom; Taub Institute for Research on Alzheimer's Disease and the Aging Brain (L.N.C.), Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY; Institute of Biomedical and Clinical Science (R.C., H.L.A., M.W.), University of Exeter Medical School, United Kingdom; and Departments of Neurology and Chronic Disease Epidemiology and Center for Neuroepidemiology and Clinical Neurological Research (E.D.L.), Yale School of Medicine and Yale School of Public Health, Yale University, New Haven, CT
| | - Holly Hardy
- Medical Research (Level 4) (V.A., B.A.C., G.V.H., H.H., A.S.-N., J.K.C., E.L.B., A.H.C.), University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon & Exeter NHS Foundation Trust, United Kingdom; Reta Lila Weston Institute of Neurological Studies (V.A., T.T.W.), UCL Institute of Neurology, London, United Kingdom; Department of Neurology (T.I.), Government Medical College, Thiruvananthapuram, Kerala, India; Department of Anatomy and Microbiology (R.S.), Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India; Clinical Neuroscience (C.P.), Royal Free Campus, UCL Institute of Neurology, London, United Kingdom; Institute of Psychological Medicine and Clinical Neurosciences (K.P.), Cardiff University, Cardiff, United Kingdom; Taub Institute for Research on Alzheimer's Disease and the Aging Brain (L.N.C.), Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY; Institute of Biomedical and Clinical Science (R.C., H.L.A., M.W.), University of Exeter Medical School, United Kingdom; and Departments of Neurology and Chronic Disease Epidemiology and Center for Neuroepidemiology and Clinical Neurological Research (E.D.L.), Yale School of Medicine and Yale School of Public Health, Yale University, New Haven, CT
| | - Ajith Sreekantan-Nair
- Medical Research (Level 4) (V.A., B.A.C., G.V.H., H.H., A.S.-N., J.K.C., E.L.B., A.H.C.), University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon & Exeter NHS Foundation Trust, United Kingdom; Reta Lila Weston Institute of Neurological Studies (V.A., T.T.W.), UCL Institute of Neurology, London, United Kingdom; Department of Neurology (T.I.), Government Medical College, Thiruvananthapuram, Kerala, India; Department of Anatomy and Microbiology (R.S.), Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India; Clinical Neuroscience (C.P.), Royal Free Campus, UCL Institute of Neurology, London, United Kingdom; Institute of Psychological Medicine and Clinical Neurosciences (K.P.), Cardiff University, Cardiff, United Kingdom; Taub Institute for Research on Alzheimer's Disease and the Aging Brain (L.N.C.), Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY; Institute of Biomedical and Clinical Science (R.C., H.L.A., M.W.), University of Exeter Medical School, United Kingdom; and Departments of Neurology and Chronic Disease Epidemiology and Center for Neuroepidemiology and Clinical Neurological Research (E.D.L.), Yale School of Medicine and Yale School of Public Health, Yale University, New Haven, CT
| | - Christos Proukakis
- Medical Research (Level 4) (V.A., B.A.C., G.V.H., H.H., A.S.-N., J.K.C., E.L.B., A.H.C.), University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon & Exeter NHS Foundation Trust, United Kingdom; Reta Lila Weston Institute of Neurological Studies (V.A., T.T.W.), UCL Institute of Neurology, London, United Kingdom; Department of Neurology (T.I.), Government Medical College, Thiruvananthapuram, Kerala, India; Department of Anatomy and Microbiology (R.S.), Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India; Clinical Neuroscience (C.P.), Royal Free Campus, UCL Institute of Neurology, London, United Kingdom; Institute of Psychological Medicine and Clinical Neurosciences (K.P.), Cardiff University, Cardiff, United Kingdom; Taub Institute for Research on Alzheimer's Disease and the Aging Brain (L.N.C.), Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY; Institute of Biomedical and Clinical Science (R.C., H.L.A., M.W.), University of Exeter Medical School, United Kingdom; and Departments of Neurology and Chronic Disease Epidemiology and Center for Neuroepidemiology and Clinical Neurological Research (E.D.L.), Yale School of Medicine and Yale School of Public Health, Yale University, New Haven, CT
| | - Kathryn Peall
- Medical Research (Level 4) (V.A., B.A.C., G.V.H., H.H., A.S.-N., J.K.C., E.L.B., A.H.C.), University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon & Exeter NHS Foundation Trust, United Kingdom; Reta Lila Weston Institute of Neurological Studies (V.A., T.T.W.), UCL Institute of Neurology, London, United Kingdom; Department of Neurology (T.I.), Government Medical College, Thiruvananthapuram, Kerala, India; Department of Anatomy and Microbiology (R.S.), Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India; Clinical Neuroscience (C.P.), Royal Free Campus, UCL Institute of Neurology, London, United Kingdom; Institute of Psychological Medicine and Clinical Neurosciences (K.P.), Cardiff University, Cardiff, United Kingdom; Taub Institute for Research on Alzheimer's Disease and the Aging Brain (L.N.C.), Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY; Institute of Biomedical and Clinical Science (R.C., H.L.A., M.W.), University of Exeter Medical School, United Kingdom; and Departments of Neurology and Chronic Disease Epidemiology and Center for Neuroepidemiology and Clinical Neurological Research (E.D.L.), Yale School of Medicine and Yale School of Public Health, Yale University, New Haven, CT
| | - Lorraine N Clark
- Medical Research (Level 4) (V.A., B.A.C., G.V.H., H.H., A.S.-N., J.K.C., E.L.B., A.H.C.), University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon & Exeter NHS Foundation Trust, United Kingdom; Reta Lila Weston Institute of Neurological Studies (V.A., T.T.W.), UCL Institute of Neurology, London, United Kingdom; Department of Neurology (T.I.), Government Medical College, Thiruvananthapuram, Kerala, India; Department of Anatomy and Microbiology (R.S.), Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India; Clinical Neuroscience (C.P.), Royal Free Campus, UCL Institute of Neurology, London, United Kingdom; Institute of Psychological Medicine and Clinical Neurosciences (K.P.), Cardiff University, Cardiff, United Kingdom; Taub Institute for Research on Alzheimer's Disease and the Aging Brain (L.N.C.), Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY; Institute of Biomedical and Clinical Science (R.C., H.L.A., M.W.), University of Exeter Medical School, United Kingdom; and Departments of Neurology and Chronic Disease Epidemiology and Center for Neuroepidemiology and Clinical Neurological Research (E.D.L.), Yale School of Medicine and Yale School of Public Health, Yale University, New Haven, CT
| | - Richard Caswell
- Medical Research (Level 4) (V.A., B.A.C., G.V.H., H.H., A.S.-N., J.K.C., E.L.B., A.H.C.), University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon & Exeter NHS Foundation Trust, United Kingdom; Reta Lila Weston Institute of Neurological Studies (V.A., T.T.W.), UCL Institute of Neurology, London, United Kingdom; Department of Neurology (T.I.), Government Medical College, Thiruvananthapuram, Kerala, India; Department of Anatomy and Microbiology (R.S.), Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India; Clinical Neuroscience (C.P.), Royal Free Campus, UCL Institute of Neurology, London, United Kingdom; Institute of Psychological Medicine and Clinical Neurosciences (K.P.), Cardiff University, Cardiff, United Kingdom; Taub Institute for Research on Alzheimer's Disease and the Aging Brain (L.N.C.), Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY; Institute of Biomedical and Clinical Science (R.C., H.L.A., M.W.), University of Exeter Medical School, United Kingdom; and Departments of Neurology and Chronic Disease Epidemiology and Center for Neuroepidemiology and Clinical Neurological Research (E.D.L.), Yale School of Medicine and Yale School of Public Health, Yale University, New Haven, CT
| | - Hana Lango Allen
- Medical Research (Level 4) (V.A., B.A.C., G.V.H., H.H., A.S.-N., J.K.C., E.L.B., A.H.C.), University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon & Exeter NHS Foundation Trust, United Kingdom; Reta Lila Weston Institute of Neurological Studies (V.A., T.T.W.), UCL Institute of Neurology, London, United Kingdom; Department of Neurology (T.I.), Government Medical College, Thiruvananthapuram, Kerala, India; Department of Anatomy and Microbiology (R.S.), Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India; Clinical Neuroscience (C.P.), Royal Free Campus, UCL Institute of Neurology, London, United Kingdom; Institute of Psychological Medicine and Clinical Neurosciences (K.P.), Cardiff University, Cardiff, United Kingdom; Taub Institute for Research on Alzheimer's Disease and the Aging Brain (L.N.C.), Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY; Institute of Biomedical and Clinical Science (R.C., H.L.A., M.W.), University of Exeter Medical School, United Kingdom; and Departments of Neurology and Chronic Disease Epidemiology and Center for Neuroepidemiology and Clinical Neurological Research (E.D.L.), Yale School of Medicine and Yale School of Public Health, Yale University, New Haven, CT
| | - Matthew Wakeling
- Medical Research (Level 4) (V.A., B.A.C., G.V.H., H.H., A.S.-N., J.K.C., E.L.B., A.H.C.), University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon & Exeter NHS Foundation Trust, United Kingdom; Reta Lila Weston Institute of Neurological Studies (V.A., T.T.W.), UCL Institute of Neurology, London, United Kingdom; Department of Neurology (T.I.), Government Medical College, Thiruvananthapuram, Kerala, India; Department of Anatomy and Microbiology (R.S.), Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India; Clinical Neuroscience (C.P.), Royal Free Campus, UCL Institute of Neurology, London, United Kingdom; Institute of Psychological Medicine and Clinical Neurosciences (K.P.), Cardiff University, Cardiff, United Kingdom; Taub Institute for Research on Alzheimer's Disease and the Aging Brain (L.N.C.), Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY; Institute of Biomedical and Clinical Science (R.C., H.L.A., M.W.), University of Exeter Medical School, United Kingdom; and Departments of Neurology and Chronic Disease Epidemiology and Center for Neuroepidemiology and Clinical Neurological Research (E.D.L.), Yale School of Medicine and Yale School of Public Health, Yale University, New Haven, CT
| | - John K Chilton
- Medical Research (Level 4) (V.A., B.A.C., G.V.H., H.H., A.S.-N., J.K.C., E.L.B., A.H.C.), University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon & Exeter NHS Foundation Trust, United Kingdom; Reta Lila Weston Institute of Neurological Studies (V.A., T.T.W.), UCL Institute of Neurology, London, United Kingdom; Department of Neurology (T.I.), Government Medical College, Thiruvananthapuram, Kerala, India; Department of Anatomy and Microbiology (R.S.), Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India; Clinical Neuroscience (C.P.), Royal Free Campus, UCL Institute of Neurology, London, United Kingdom; Institute of Psychological Medicine and Clinical Neurosciences (K.P.), Cardiff University, Cardiff, United Kingdom; Taub Institute for Research on Alzheimer's Disease and the Aging Brain (L.N.C.), Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY; Institute of Biomedical and Clinical Science (R.C., H.L.A., M.W.), University of Exeter Medical School, United Kingdom; and Departments of Neurology and Chronic Disease Epidemiology and Center for Neuroepidemiology and Clinical Neurological Research (E.D.L.), Yale School of Medicine and Yale School of Public Health, Yale University, New Haven, CT
| | - Emma L Baple
- Medical Research (Level 4) (V.A., B.A.C., G.V.H., H.H., A.S.-N., J.K.C., E.L.B., A.H.C.), University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon & Exeter NHS Foundation Trust, United Kingdom; Reta Lila Weston Institute of Neurological Studies (V.A., T.T.W.), UCL Institute of Neurology, London, United Kingdom; Department of Neurology (T.I.), Government Medical College, Thiruvananthapuram, Kerala, India; Department of Anatomy and Microbiology (R.S.), Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India; Clinical Neuroscience (C.P.), Royal Free Campus, UCL Institute of Neurology, London, United Kingdom; Institute of Psychological Medicine and Clinical Neurosciences (K.P.), Cardiff University, Cardiff, United Kingdom; Taub Institute for Research on Alzheimer's Disease and the Aging Brain (L.N.C.), Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY; Institute of Biomedical and Clinical Science (R.C., H.L.A., M.W.), University of Exeter Medical School, United Kingdom; and Departments of Neurology and Chronic Disease Epidemiology and Center for Neuroepidemiology and Clinical Neurological Research (E.D.L.), Yale School of Medicine and Yale School of Public Health, Yale University, New Haven, CT
| | - Elan D Louis
- Medical Research (Level 4) (V.A., B.A.C., G.V.H., H.H., A.S.-N., J.K.C., E.L.B., A.H.C.), University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon & Exeter NHS Foundation Trust, United Kingdom; Reta Lila Weston Institute of Neurological Studies (V.A., T.T.W.), UCL Institute of Neurology, London, United Kingdom; Department of Neurology (T.I.), Government Medical College, Thiruvananthapuram, Kerala, India; Department of Anatomy and Microbiology (R.S.), Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India; Clinical Neuroscience (C.P.), Royal Free Campus, UCL Institute of Neurology, London, United Kingdom; Institute of Psychological Medicine and Clinical Neurosciences (K.P.), Cardiff University, Cardiff, United Kingdom; Taub Institute for Research on Alzheimer's Disease and the Aging Brain (L.N.C.), Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY; Institute of Biomedical and Clinical Science (R.C., H.L.A., M.W.), University of Exeter Medical School, United Kingdom; and Departments of Neurology and Chronic Disease Epidemiology and Center for Neuroepidemiology and Clinical Neurological Research (E.D.L.), Yale School of Medicine and Yale School of Public Health, Yale University, New Haven, CT
| | - Thomas T Warner
- Medical Research (Level 4) (V.A., B.A.C., G.V.H., H.H., A.S.-N., J.K.C., E.L.B., A.H.C.), University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon & Exeter NHS Foundation Trust, United Kingdom; Reta Lila Weston Institute of Neurological Studies (V.A., T.T.W.), UCL Institute of Neurology, London, United Kingdom; Department of Neurology (T.I.), Government Medical College, Thiruvananthapuram, Kerala, India; Department of Anatomy and Microbiology (R.S.), Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India; Clinical Neuroscience (C.P.), Royal Free Campus, UCL Institute of Neurology, London, United Kingdom; Institute of Psychological Medicine and Clinical Neurosciences (K.P.), Cardiff University, Cardiff, United Kingdom; Taub Institute for Research on Alzheimer's Disease and the Aging Brain (L.N.C.), Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY; Institute of Biomedical and Clinical Science (R.C., H.L.A., M.W.), University of Exeter Medical School, United Kingdom; and Departments of Neurology and Chronic Disease Epidemiology and Center for Neuroepidemiology and Clinical Neurological Research (E.D.L.), Yale School of Medicine and Yale School of Public Health, Yale University, New Haven, CT
| | - Andrew H Crosby
- Medical Research (Level 4) (V.A., B.A.C., G.V.H., H.H., A.S.-N., J.K.C., E.L.B., A.H.C.), University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon & Exeter NHS Foundation Trust, United Kingdom; Reta Lila Weston Institute of Neurological Studies (V.A., T.T.W.), UCL Institute of Neurology, London, United Kingdom; Department of Neurology (T.I.), Government Medical College, Thiruvananthapuram, Kerala, India; Department of Anatomy and Microbiology (R.S.), Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India; Clinical Neuroscience (C.P.), Royal Free Campus, UCL Institute of Neurology, London, United Kingdom; Institute of Psychological Medicine and Clinical Neurosciences (K.P.), Cardiff University, Cardiff, United Kingdom; Taub Institute for Research on Alzheimer's Disease and the Aging Brain (L.N.C.), Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY; Institute of Biomedical and Clinical Science (R.C., H.L.A., M.W.), University of Exeter Medical School, United Kingdom; and Departments of Neurology and Chronic Disease Epidemiology and Center for Neuroepidemiology and Clinical Neurological Research (E.D.L.), Yale School of Medicine and Yale School of Public Health, Yale University, New Haven, CT
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Perinatal administration of phencyclidine alters expression of Lingo-1 signaling pathway proteins in the prefrontal cortex of juvenile and adult rats. Neuronal Signal 2018; 2:NS20180059. [PMID: 32714588 PMCID: PMC7373234 DOI: 10.1042/ns20180059] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 06/17/2018] [Accepted: 06/22/2018] [Indexed: 11/17/2022] Open
Abstract
Postnatal administration of phencyclidine (PCP) in rodents causes major brain dysfunction leading to severe disturbances in behavior lasting into adulthood. This model is routinely employed to model psychiatric disorders such as schizophrenia, as it reflects schizophrenia-related brain disturbances including increased apoptosis, and disruptions to myelin and plasticity processes. Leucine-rich repeat and Immunoglobin-like domain-containing protein 1 (Lingo-1) is a potent negative regulator of both axonal myelination and neurite extension. The Nogo receptor (NgR)/tumor necrosis factor (TNF) receptor orphan Y (TROY) and/or p75 neurotrophin receptor (p75) complex, with no lysine (K) (WNK1) and myelin transcription factor 1 (Myt1) are co-receptors or cofactors in Lingo-1 signaling pathways in the brain. We have examined the developmental trajectory of these proteins in a neurodevelopmental model of schizophrenia using PCP to determine if Lingo-1 pathways are altered in the prefrontal cortex throughout different stages of life. Sprague-Dawley rats were injected with PCP (10 mg/kg) or saline on postnatal days (PN)7, 9, and 11 and killed at PN12, 5 or 14 weeks for measurement of Lingo-1 signaling proteins in the prefrontal cortex. Myt1 was decreased by PCP at PN12 (P=0.045), and at 14 weeks PCP increased Lingo-1 (P=0.037), TROY (P=0.017), and WNK1 (P=0.003) expression. This is the first study reporting an alteration in Lingo-1 signaling proteins in the rat prefrontal cortex both directly after PCP treatment in early development and in adulthood. We propose that Lingo-1 pathways may be negatively regulating myelination and neurite outgrowth following the administration of PCP, and that this may have implications for the cortical dysfunction observed in schizophrenia.
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Chen CP, Chen CY, Chern SR, Wu PS, Chen SW, Lai ST, Lee CC, Yang CW, Wang W. Molecular cytogenetic characterization of a duplication of 15q24.2-q26.2 associated with anencephaly and neural tube defect. Taiwan J Obstet Gynecol 2018; 56:550-553. [PMID: 28805617 DOI: 10.1016/j.tjog.2017.06.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/02/2017] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVE We present molecular cytogenetic characterization of a duplication of 15q24.2-q26.2 associated with anencephaly and neural tube defect (NTD). CASE REPORT A 35-year-old pregnant woman was found to have a fetus with anencephaly by prenatal ultrasound at 12 weeks of gestation. The pregnancy was subsequently terminated, and a malformed fetus was delivered with anencephaly. Cytogenetic analysis of the cultured placental tissues revealed a karyotype of 46,XX,dup(15) (q24.2q26.2). Parental karyotypes were normal. Array comparative genomic hybridization analysis of the placental tissues revealed a 20.36-Mb duplication of 15q24.2-q26.2 encompassing 100 Online Mendelian Inheritance of in Man (OMIM) genes including LINGO1, MTHFS, KIF7 and CHD2. Metaphase fluorescence in situ hybridization analysis using 15q25.1-specidic probe confirmed a duplication of 15q25.1. Polymorphic DNA marker analysis showed a maternal origin of the duplication. CONCLUSION A duplication of chromosome 15q24.2-q26.2 can be associated with NTD.
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Affiliation(s)
- Chih-Ping Chen
- Department of Obstetrics and Gynecology, MacKay Memorial Hospital, Taipei, Taiwan; Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan; Department of Biotechnology, Asia University, Taichung, Taiwan; School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung, Taiwan; Institute of Clinical and Community Health Nursing, National Yang-Ming University, Taipei, Taiwan; Department of Obstetrics and Gynecology, School of Medicine, National Yang-Ming University, Taipei, Taiwan.
| | - Chen-Yu Chen
- Department of Obstetrics and Gynecology, MacKay Memorial Hospital, Taipei, Taiwan; Department of Medicine, MacKay Medical College, New Taipei City, Taiwan; MacKay Junior College of Medicine, Nursing and Management, Taipei, Taiwan
| | - Schu-Rern Chern
- Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan
| | | | - Shin-Wen Chen
- Department of Obstetrics and Gynecology, MacKay Memorial Hospital, Taipei, Taiwan
| | - Shih-Ting Lai
- Department of Obstetrics and Gynecology, MacKay Memorial Hospital, Taipei, Taiwan
| | - Chen-Chi Lee
- Department of Obstetrics and Gynecology, MacKay Memorial Hospital, Taipei, Taiwan
| | - Chien-Wen Yang
- Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan
| | - Wayseen Wang
- Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan; Department of Bioengineering, Tatung University, Taipei, Taiwan
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Yang T, Guo Q, Shi X, Wu S, Li Y, Sun Y, Zhao Y, Chai L, Gao Y, Lou L, Dong B, Zhu L. Panax notoginseng saponins promotes cerebral recovery from ischemic injury by downregulating LINGO-1 and activating the EGFR/PI3K/AKT signaling pathways in vivo. JOURNAL OF TRADITIONAL CHINESE MEDICAL SCIENCES 2018. [DOI: 10.1016/j.jtcms.2018.03.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Cicvaric A, Yang J, Bulat T, Zambon A, Dominguez-Rodriguez M, Kühn R, Sadowicz MG, Siwert A, Egea J, Pollak DD, Moeslinger T, Monje FJ. Enhanced synaptic plasticity and spatial memory in female but not male FLRT2-haplodeficient mice. Sci Rep 2018; 8:3703. [PMID: 29487336 PMCID: PMC5829229 DOI: 10.1038/s41598-018-22030-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Accepted: 02/14/2018] [Indexed: 12/30/2022] Open
Abstract
The Fibronectin Leucine-Rich Transmembrane protein 2 (FLRT2) has been implicated in several hormone -and sex-dependent physiological and pathological processes (including chondrogenesis, menarche and breast cancer); is known to regulate developmental synapses formation, and is expressed in the hippocampus, a brain structure central for learning and memory. However, the role of FLRT2 in the adult hippocampus and its relevance in sex-dependent brain functions remains unknown. We here used adult single-allele FLRT2 knockout (FLRT2+/-) mice and behavioral, electrophysiological, and molecular/biological assays to examine the effects of FLRT2 haplodeficiency on synaptic plasticity and hippocampus-dependent learning and memory. Female and male FLRT2+/- mice presented morphological features (including body masses, brain shapes/weights, and brain macroscopic cytoarchitectonic organization), indistinguishable from their wild type counterparts. However, in vivo examinations unveiled enhanced hippocampus-dependent spatial memory recall in female FLRT2+/- animals, concomitant with augmented hippocampal synaptic plasticity and decreased levels of the glutamate transporter EAAT2 and beta estrogen receptors. In contrast, male FLRT2+/- animals exhibited deficient memory recall and decreased alpha estrogen receptor levels. These observations propose that FLRT2 can regulate memory functions in the adulthood in a sex-specific manner and might thus contribute to further research on the mechanisms linking sexual dimorphism and cognition.
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Affiliation(s)
- Ana Cicvaric
- Department of Neurophysiology and Neuropharmacology, Center for Physiology and Pharmacology, Medical University of Vienna, Schwarzspanierstrasse 17, 1090, Vienna, Austria
| | - Jiaye Yang
- Department of Neurophysiology and Neuropharmacology, Center for Physiology and Pharmacology, Medical University of Vienna, Schwarzspanierstrasse 17, 1090, Vienna, Austria
| | - Tanja Bulat
- Department of Neurophysiology and Neuropharmacology, Center for Physiology and Pharmacology, Medical University of Vienna, Schwarzspanierstrasse 17, 1090, Vienna, Austria
| | - Alice Zambon
- Department of Neurophysiology and Neuropharmacology, Center for Physiology and Pharmacology, Medical University of Vienna, Schwarzspanierstrasse 17, 1090, Vienna, Austria
| | - Manuel Dominguez-Rodriguez
- Department of Neurophysiology and Neuropharmacology, Center for Physiology and Pharmacology, Medical University of Vienna, Schwarzspanierstrasse 17, 1090, Vienna, Austria
| | - Rebekka Kühn
- Department of Neurophysiology and Neuropharmacology, Center for Physiology and Pharmacology, Medical University of Vienna, Schwarzspanierstrasse 17, 1090, Vienna, Austria
| | - Michael G Sadowicz
- Department of Neurophysiology and Neuropharmacology, Center for Physiology and Pharmacology, Medical University of Vienna, Schwarzspanierstrasse 17, 1090, Vienna, Austria
| | - Anjana Siwert
- Department of Neurophysiology and Neuropharmacology, Center for Physiology and Pharmacology, Medical University of Vienna, Schwarzspanierstrasse 17, 1090, Vienna, Austria
| | - Joaquim Egea
- Molecular and Developmental Neurobiology Research Group, Universitat de Lleida - IRBLleida, Office 1.13, Lab. 1.06. Avda. Rovira Roure, 80, 25198, Lleida, Spain
| | - Daniela D Pollak
- Department of Neurophysiology and Neuropharmacology, Center for Physiology and Pharmacology, Medical University of Vienna, Schwarzspanierstrasse 17, 1090, Vienna, Austria
| | - Thomas Moeslinger
- Institute for Physiology, Center for Physiology and Pharmacology, Medical University of Vienna, Schwarzspanierstrasse 17, 1090, Vienna, Austria
| | - Francisco J Monje
- Department of Neurophysiology and Neuropharmacology, Center for Physiology and Pharmacology, Medical University of Vienna, Schwarzspanierstrasse 17, 1090, Vienna, Austria.
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Tropea TF, Xie SX, Rick J, Chahine LM, Dahodwala N, Doshi J, Davatzikos C, Shaw LM, Van Deerlin V, Trojanowski JQ, Weintraub D, Chen-Plotkin AS. APOE, thought disorder, and SPARE-AD predict cognitive decline in established Parkinson's disease. Mov Disord 2017; 33:289-297. [PMID: 29168904 DOI: 10.1002/mds.27204] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 08/23/2017] [Accepted: 09/18/2017] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND People with PD are at high risk of developing cognitive impairment and dementia. Cross-sectional studies have identified candidate biomarkers associated with cognitive decline. However, longitudinal studies on this topic are rarer, and few have investigated the use of biomarker panels encompassing multiple modalities. The objective of this study was to find baseline predictors of cognitive decline in longitudinally followed, nondemented Parkinson's disease patients. METHODS We performed a prospective cohort study of 100 PD patients with a median disease duration of 6.4 years. All participants were nondemented at baseline. We examined 16 baseline biomarkers from clinical, genetic, biochemical, and MRI-based imaging modalities for their association with longitudinal cognitive decline for up to 8 years. We investigated biomarkers individually, as well as in a multivariate linear mixed-effects model encompassing multimodal biomarkers, with change in the Mattis Dementia Rating Scale-2 over time as the primary outcome. Annual consensus process-derived cognitive diagnosis was used for Cox proportional hazards modeling of risk for cognitive decline. RESULTS In multivariate analysis, the presence of the APOE E4 allele, thought disorder, and an Alzheimer's disease pattern of brain atrophy (spatial pattern of abnormality for recognition of early Alzheimer's disease index) best predicted cognitive decline, with APOE E4 genotype exerting the greatest effect. The presence of the APOE E4 allele was associated with a 3.5 times higher risk of worsening cognitive diagnosis over time (HR, 3.53; 95% CI, 1.52-8.24; P < 0.05). The APOE genotype effect was not specific to any Mattis Dementia Rating Scale-2 domain. CONCLUSIONS Our results confirm the importance of Alzheimer's disease biomarkers as risk factors for cognitive decline in established Parkinson's disease. © 2017 International Parkinson and Movement Disorder Society.
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Affiliation(s)
- Thomas F Tropea
- Department of Neurology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Sharon X Xie
- Department of Biostatistics and Epidemiology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Jacqueline Rick
- Department of Neurology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Lana M Chahine
- Department of Neurology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Nabila Dahodwala
- Department of Neurology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Jimit Doshi
- Department of Radiology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Christos Davatzikos
- Department of Radiology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Leslie M Shaw
- Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Vivianna Van Deerlin
- Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - John Q Trojanowski
- Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Center for Neurodegenerative Disease Research, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Daniel Weintraub
- Psychiatry, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Parkinson's Disease and Mental Illness Research, Education and Clinical Centers (PADRECC and MIRECC), Philadelphia Veterans Affairs Medical Center, Philadelphia, Pennsylvania, USA
| | - Alice S Chen-Plotkin
- Department of Neurology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
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Latourelle JC, Beste MT, Hadzi TC, Miller RE, Oppenheim JN, Valko MP, Wuest DM, Church BW, Khalil IG, Hayete B, Venuto CS. Large-scale identification of clinical and genetic predictors of motor progression in patients with newly diagnosed Parkinson's disease: a longitudinal cohort study and validation. Lancet Neurol 2017; 16:908-916. [PMID: 28958801 PMCID: PMC5693218 DOI: 10.1016/s1474-4422(17)30328-9] [Citation(s) in RCA: 105] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 08/15/2017] [Accepted: 08/17/2017] [Indexed: 01/21/2023]
Abstract
Background Better understanding and prediction of PD progression could improve disease management and clinical trial design. We aimed to use longitudinal clinical, molecular, and genetic data to develop predictive models, compare potential biomarkers, and identify novel predictors for motor progression in PD. We also sought to assess the use of these models in the design of treatment trials in PD. Methods A Bayesian multivariate predictive inference platform was applied to data from the Parkinson’s Progression Markers Initiative (PPMI) study (NCT01141023). We used genetic data and baseline molecular and clinical variables from PD patients and healthy controls to construct an ensemble of models to predict the annualised rate of the Movement Disorder Society-Unified Parkinson’s Disease Rating Scale parts II and III combined. We tested our overall explanatory power, as assessed by the coefficient of determination (R2), and replicated novel findings in an independent clinical cohort of PD patients from the Longitudinal and Biomarker Study in PD (LABS-PD; NCT00605163). The potential utility of these models for clinical trial design was quantified by comparing simulated randomized placebo-controlled trials within the out-of sample LABS-PD cohort. Findings A total of 117 controls and 312 PD cases were available for analysis. Our model ensemble exhibited strong performance in-cohort (5-fold cross-validated R2=41%, 95% CI: 35% – 47%) and significant, though reduced, performance out-of-cohort (R2=9%, 95% CI: 4% – 16%). Individual predictive features identified from PPMI data were confirmed in the LABS-PD cohort of 317 PD patients. These included significant replication of higher baseline motor score, male sex, and increased age, as well as a novel PD-specific epistatic interaction all indicative of faster motor progression. Genetic variation was the most useful predictive marker of motor progression (2.9%, 95%CI: 1.5–4.3%). CSF biomarkers at baseline showed a more modest (0.3%; 95%CI: 0.1–0.5%), but still significant effect on motor progression prediction. The simulations (n=5000) showed that incorporating the predicted rates of motor progression into the final models of treatment effect reduced the variability in the study outcome allowing significant differences to be detected at sample sizes up to 20% smaller than in naïve trials. Interpretation Our model ensemble confirmed established and identified novel predictors of PD motor progression. Improving existing prognostic models through machine learning approaches should benefit trial design and evaluation, as well as clinical disease monitoring and treatment. Funding Michael J. Fox Foundation for Parkinson’s Research and National Institute of Neurological Disorders and Stroke (1P20NS092529-01).
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Charles S Venuto
- Center for Health and Technology and Department of Neurology, University of Rochester, Rochester, NY, USA
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Ansar M, Riazuddin S, Sarwar MT, Makrythanasis P, Paracha SA, Iqbal Z, Khan J, Assir MZ, Hussain M, Razzaq A, Polla DL, Taj AS, Holmgren A, Batool N, Misceo D, Iwaszkiewicz J, de Brouwer APM, Guipponi M, Hanquinet S, Zoete V, Santoni FA, Frengen E, Ahmed J, Riazuddin S, van Bokhoven H, Antonarakis SE. Biallelic variants in LINGO1 are associated with autosomal recessive intellectual disability, microcephaly, speech and motor delay. Genet Med 2017; 20:778-784. [DOI: 10.1038/gim.2017.113] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Accepted: 05/31/2017] [Indexed: 02/04/2023] Open
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Seiler S, Di Santo S, Andereggen L, Widmer HR. Antagonization of the Nogo-Receptor 1 Enhances Dopaminergic Fiber Outgrowth of Transplants in a Rat Model of Parkinson's Disease. Front Cell Neurosci 2017; 11:151. [PMID: 28603490 PMCID: PMC5445167 DOI: 10.3389/fncel.2017.00151] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 05/09/2017] [Indexed: 11/13/2022] Open
Abstract
Intrastriatal transplantation of fetal human ventral mesencephalic dopaminergic neurons is an experimental therapy for patients suffering from Parkinson’s disease. The success of this approach depends on several host brain parameters including neurotrophic factors and growth inhibitors that guide survival and integration of transplanted neurons. While the potential of neurotrophic factors has been extensively investigated, repression of growth inhibitors has been neglected, despite the significant effects reported in various CNS injury models. Recently, we demonstrated that infusion of neutralizing antibodies against Nogo-A into the lateral ventricles of hemi-parkinsonian rats significantly enhanced graft function. Since the Nogo-receptor 1 also interacts with other neurite growth inhibitors, we investigated whether a direct antagonization of the receptor would result in more robust effects. Therefore, rats with unilateral striatal 6-hydroxydopamine lesions were grafted with ventral mesencephalic tissue in combination with intraventricular infusions of the Nogo-receptor 1 antagonist NEP1-40. Transplanted rats receiving saline infusions served as controls. To test whether NEP1-40 treatment alone affects the remaining dopaminergic striatal fibers, rats with unilateral striatal 6-hydroxydopamine lesions were infused with NEP1-40 or saline without receiving a transplant. Motor behavior was assessed prior to the lesion as well as prior and 1, 3, and 5 weeks after the transplantations. At the end of the experimental period the number of graft-derived dopaminergic fibers growing into the host brain, the number of surviving dopaminergic neurons and graft volume were analyzed. In rats without a transplant, the density of dopaminergic fibers in the striatum was analyzed. We detected that NEP1-40 treatment significantly enhanced graft-derived dopaminergic fiber outgrowth as compared to controls while no effects were detected for graft volume and survival of grafted dopaminergic neurons. Notably, the enhanced dopaminergic fiber outgrowth was not sufficient to improve the functional recovery as compared to controls. Moreover, NEP1-40 infusions in hemi-parkinsonian rats without a transplant did not result in enhanced striatal dopaminergic fiber densities and consequently did not improve behavior. In sum, our findings demonstrate that antagonization of the Nogo-receptor 1 has the capacity to support the engraftment of transplanted mesencephalic tissue in an animal model of Parkinson’s disease.
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Affiliation(s)
- Stefanie Seiler
- Department of Neurosurgery, Neurocenter and Regenerative Neuroscience Cluster, University Hospital Bern, Switzerland University of BernBern, Switzerland.,Department of Clinical Research, University of BernBern, Switzerland
| | - Stefano Di Santo
- Department of Neurosurgery, Neurocenter and Regenerative Neuroscience Cluster, University Hospital Bern, Switzerland University of BernBern, Switzerland.,Department of Clinical Research, University of BernBern, Switzerland
| | - Lukas Andereggen
- Department of Neurosurgery, Neurocenter and Regenerative Neuroscience Cluster, University Hospital Bern, Switzerland University of BernBern, Switzerland.,Department of Clinical Research, University of BernBern, Switzerland
| | - Hans R Widmer
- Department of Neurosurgery, Neurocenter and Regenerative Neuroscience Cluster, University Hospital Bern, Switzerland University of BernBern, Switzerland.,Department of Clinical Research, University of BernBern, Switzerland
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Seiler S, Di Santo S, Sahli S, Andereggen L, Widmer HR. Nogo-receptor 1 antagonization in combination with neurotrophin-4/5 is not superior to single factor treatment in promoting survival and morphological complexity of cultured dopaminergic neurons. Brain Res 2017; 1668:56-64. [PMID: 28535980 DOI: 10.1016/j.brainres.2017.05.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 05/12/2017] [Accepted: 05/13/2017] [Indexed: 01/25/2023]
Abstract
Cell transplantation using ventral mesencephalic tissue is an experimental approach to treat Parkinson's disease. This approach is limited by poor survival of the transplants and the high number of dopaminergic neurons needed for grafting. Increasing the yield of dopaminergic neurons in donor tissue is of great importance. We have previously shown that antagonization of the Nogo-receptor 1 by NEP1-40 promoted survival of cultured dopaminergic neurons and exposure to neurotrophin-4/5 increased dopaminergic cell densities in organotypic midbrain cultures. We investigated whether a combination of both treatments offers a novel tool to further improve dopaminergic neuron survival. Rat embryonic ventral mesencephalic neurons grown as organotypic free-floating roller tube or primary dissociated cultures were exposed to neurotrophin-4/5 and NEP1-40. The combined and single factor treatment resulted in significantly higher numbers of tyrosine hydroxylase positive neurons compared to controls. Significantly stronger tyrosine hydroxylase signal intensity was detected by Western blotting in the combination-treated cultures compared to controls but not compared to single factor treatments. Neurotrophin-4/5 and the combined treatment showed significantly higher signals for the neuronal marker microtubule-associated protein 2 in Western blots compared to control while no effects were observed for the astroglial marker glial fibrillary acidic protein between groups, suggesting that neurotrophin-4/5 targets mainly neuronal cells. Finally, NEP1-40 and the combined treatment significantly augmented tyrosine hydroxylase positive neurite length. Summarizing, our findings substantiate that antagonization of the Nogo-receptor 1 promotes dopaminergic neurons but does not further increase the yield of dopaminergic neurons and their morphological complexity when combined with neurotrophin-4/5 hinting to the idea that these treatments might exert their effects by activating common downstream pathways.
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Affiliation(s)
- Stefanie Seiler
- Department of Neurosurgery, Neurocenter and Regenerative Neuroscience Cluster, Inselspital, Bern University Hospital, University of Bern, CH-3010 Bern, Switzerland; Department of Clinical Research, University of Bern, Switzerland
| | - Stefano Di Santo
- Department of Neurosurgery, Neurocenter and Regenerative Neuroscience Cluster, Inselspital, Bern University Hospital, University of Bern, CH-3010 Bern, Switzerland; Department of Clinical Research, University of Bern, Switzerland
| | - Sebastian Sahli
- Department of Neurosurgery, Neurocenter and Regenerative Neuroscience Cluster, Inselspital, Bern University Hospital, University of Bern, CH-3010 Bern, Switzerland
| | - Lukas Andereggen
- Department of Neurosurgery, Neurocenter and Regenerative Neuroscience Cluster, Inselspital, Bern University Hospital, University of Bern, CH-3010 Bern, Switzerland; Department of Clinical Research, University of Bern, Switzerland
| | - Hans Rudolf Widmer
- Department of Neurosurgery, Neurocenter and Regenerative Neuroscience Cluster, Inselspital, Bern University Hospital, University of Bern, CH-3010 Bern, Switzerland; Department of Clinical Research, University of Bern, Switzerland.
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Neirinckx V, Hedman H, Niclou SP. Harnessing LRIG1-mediated inhibition of receptor tyrosine kinases for cancer therapy. Biochim Biophys Acta Rev Cancer 2017; 1868:109-116. [PMID: 28259645 DOI: 10.1016/j.bbcan.2017.02.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 02/27/2017] [Accepted: 02/28/2017] [Indexed: 02/07/2023]
Abstract
Leucine-rich repeats and immunoglobulin-like domains containing protein 1 (LRIG1) is an endogenous feedback regulator of receptor tyrosine kinases (RTKs) and was recently shown to inhibit growth of different types of malignancies. Additionally, this multifaceted RTK inhibitor was reported to be a tumor suppressor, a stem cell regulator, and a modulator of different cellular phenotypes. This mini-review provides a concise and up-to-date summary about the known functions of LRIG1 and its related family members, with a special emphasis on underlying molecular mechanisms and the opportunities for harnessing its therapeutic potential against cancer.
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Affiliation(s)
- Virginie Neirinckx
- NorLux Neuro-Oncology Laboratory, Department of Oncology, Luxembourg Institute of Health, 1526, Luxembourg
| | - Hakan Hedman
- Oncology Research Laboratory, Department of Radiation Sciences, Umeå University, 90187 Umeå, Sweden
| | - Simone P Niclou
- NorLux Neuro-Oncology Laboratory, Department of Oncology, Luxembourg Institute of Health, 1526, Luxembourg; K.G. Jebsen Brain Tumour Research Centre, Department of Biomedicine, University of Bergen, 5020 Bergen, Norway.
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40
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Attempts to Overcome Remyelination Failure: Toward Opening New Therapeutic Avenues for Multiple Sclerosis. Cell Mol Neurobiol 2017; 37:1335-1348. [PMID: 28224237 DOI: 10.1007/s10571-017-0472-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2016] [Accepted: 02/12/2017] [Indexed: 01/02/2023]
Abstract
Multiple sclerosis (MS) is a chronic immune-mediated disorder of the central nervous system that results in destruction of the myelin sheath wrapped around the axons and eventual axon degeneration. The disease is pathologically heterogeneous; however, perhaps its most frustrating aspect is the lack of efficient regenerative response for remyelination. Current treatment strategies are based on anti-inflammatory or immunomodulatory medications that have the potential to reduce the numbers of newly evolving lesions. However, therapies are still required that can repair already damaged myelin for which current treatments are not effective. A prerequisite for the development of such new treatments is understanding the reasons for insufficient endogenous repair. This review briefly summarizes the currently suggested causes of remyelination failure in MS and possible solutions.
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LINGO-1 Regulates Oligodendrocyte Differentiation through the Cytoplasmic Gelsolin Signaling Pathway. J Neurosci 2017; 37:3127-3137. [PMID: 28193690 DOI: 10.1523/jneurosci.3722-16.2017] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2016] [Revised: 01/19/2017] [Accepted: 02/06/2017] [Indexed: 01/07/2023] Open
Abstract
Differentiation and maturation of oligodendrocyte progenitor cells (OPCs) involve the assembly and disassembly of actin microfilaments. However, how actin dynamics are regulated during this process remains poorly understood. Leucine-rich repeat and Ig-like domain-containing Nogo receptor interacting protein 1 (LINGO-1) is a negative regulator of OPC differentiation. We discovered that anti-LINGO-1 antibody-promoted OPC differentiation was accompanied by upregulation of cytoplasmic gelsolin (cGSN), an abundant actin-severing protein involved in the depolymerization of actin filaments. Treating rat OPCs with cGSN siRNA reduced OPC differentiation, whereas overexpression of cGSN promoted OPC differentiation in vitro and remyelination in vivo Furthermore, coexpression of cGSN and LINGO-1 blocked the inhibitory effect of LINGO-1. Our study demonstrates that cGSN works downstream of LINGO-1 signaling pathway, which enhances actin dynamics and is essential for OPC morphogenesis and differentiation. This finding may lead to novel therapeutic approaches for the treatment of demyelinating diseases such as multiple sclerosis (MS).SIGNIFICANCE STATEMENT Myelin loss and subsequent axon degeneration contributes to a variety of neurological diseases, such as multiple sclerosis (MS). Understanding the regulation of myelination by oligodendrocytes is therefore critical for developing therapies for the treatment of MS. We previously demonstrated that leucine-rich repeat and Ig-like domain-containing Nogo receptor interacting protein 1 (LINGO-1) is a negative regulator of oligodendrocyte differentiation and that anti-LINGO-1 promotes remyelination in preclinical animal models for MS and in a phase II acute optic neuritis clinical trial (RENEW). The mechanism by which LINGO-1 regulates oligodendrocyte differentiation is unknown. Here, we demonstrate that LINGO-1 regulates oligodendrocyte differentiation and maturation through the cytoplasmic gelsolin signaling pathway, providing new drug targets for the treatment of demyelination diseases.
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Cerina M, Narayanan V, Göbel K, Bittner S, Ruck T, Meuth P, Herrmann AM, Stangel M, Gudi V, Skripuletz T, Daldrup T, Wiendl H, Seidenbecher T, Ehling P, Kleinschnitz C, Pape HC, Budde T, Meuth SG. The quality of cortical network function recovery depends on localization and degree of axonal demyelination. Brain Behav Immun 2017; 59:103-117. [PMID: 27569659 DOI: 10.1016/j.bbi.2016.08.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2016] [Revised: 08/12/2016] [Accepted: 08/25/2016] [Indexed: 10/21/2022] Open
Abstract
Myelin loss is a severe pathological hallmark common to a number of neurodegenerative diseases, including multiple sclerosis (MS). Demyelination in the central nervous system appears in the form of lesions affecting both white and gray matter structures. The functional consequences of demyelination on neuronal network and brain function are not well understood. Current therapeutic strategies for ameliorating the course of such diseases usually focus on promoting remyelination, but the effectiveness of these approaches strongly depends on the timing in relation to the disease state. In this study, we sought to characterize the time course of sensory and behavioral alterations induced by de- and remyelination to establish a rational for the use of remyelination strategies. By taking advantage of animal models of general and focal demyelination, we tested the consequences of myelin loss on the functionality of the auditory thalamocortical system: a well-studied neuronal network consisting of both white and gray matter regions. We found that general demyelination was associated with a permanent loss of the tonotopic cortical organization in vivo, and the inability to induce tone-frequency-dependent conditioned behaviors, a status persisting after remyelination. Targeted, focal lysolecithin-induced lesions in the white matter fiber tract, but not in the gray matter regions of cortex, were fully reversible at the morphological, functional and behavioral level. These findings indicate that remyelination of white and gray matter lesions have a different functional regeneration potential, with the white matter being able to regain full functionality while cortical gray matter lesions suffer from permanently altered network function. Therefore therapeutic interventions aiming for remyelination have to consider both region- and time-dependent strategies.
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Affiliation(s)
- Manuela Cerina
- Department of Neurology, University of Münster, Münster, Germany.
| | - Venu Narayanan
- Department of Neurology, University of Münster, Münster, Germany
| | - Kerstin Göbel
- Department of Neurology, University of Münster, Münster, Germany
| | - Stefan Bittner
- Department of Neurology, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Tobias Ruck
- Department of Neurology, University of Münster, Münster, Germany
| | - Patrick Meuth
- Department of Neurology, University of Münster, Münster, Germany
| | | | - Martin Stangel
- Clinical Neuroimmunology and Neurochemistry, Department of Neurology, Hannover Medical School and Centre for Systems Neuroscience, Hannover, Germany
| | - Viktoria Gudi
- Department of Neurology, Hannover Medical School, Hannover, Germany
| | | | - Thiemo Daldrup
- Institute of Physiology I, University of Münster, Münster, Germany
| | - Heinz Wiendl
- Department of Neurology, University of Münster, Münster, Germany
| | | | - Petra Ehling
- Department of Neurology, University of Münster, Münster, Germany
| | | | | | - Thomas Budde
- Institute of Physiology I, University of Münster, Münster, Germany
| | - Sven G Meuth
- Department of Neurology, University of Münster, Münster, Germany.
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Foale S, Berry M, Logan A, Fulton D, Ahmed Z. LINGO-1 and AMIGO3, potential therapeutic targets for neurological and dysmyelinating disorders? Neural Regen Res 2017; 12:1247-1251. [PMID: 28966634 PMCID: PMC5607814 DOI: 10.4103/1673-5374.213538] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Leucine rich repeat proteins have gained considerable interest as therapeutic targets due to their expression and biological activity within the central nervous system. LINGO-1 has received particular attention since it inhibits axonal regeneration after spinal cord injury in a RhoA dependent manner while inhibiting leucine rich repeat and immunoglobulin-like domain-containing protein 1 (LINGO-1) disinhibits neuron outgrowth. Furthermore, LINGO-1 suppresses oligodendrocyte precursor cell maturation and myelin production. Inhibiting the action of LINGO-1 encourages remyelination both in vitro and in vivo. Accordingly, LINGO-1 antagonists show promise as therapies for demyelinating diseases. An analogous protein to LINGO-1, amphoterin-induced gene and open reading frame-3 (AMIGO3), exerts the same inhibitory effect on the axonal outgrowth of central nervous system neurons, as well as interacting with the same receptors as LINGO-1. However, AMIGO3 is upregulated more rapidly after spinal cord injury than LINGO-1. We speculate that AMIGO3 has a similar inhibitory effect on oligodendrocyte precursor cell maturation and myelin production as with axogenesis. Therefore, inhibiting AMIGO3 will likely encourage central nervous system axonal regeneration as well as the production of myelin from local oligodendrocyte precursor cell, thus providing a promising therapeutic target and an area for future investigation.
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Affiliation(s)
- Simon Foale
- Neuroscience and Ophthalmology, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
| | - Martin Berry
- Neuroscience and Ophthalmology, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
| | - Ann Logan
- Neuroscience and Ophthalmology, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
| | - Daniel Fulton
- Neuroscience and Ophthalmology, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
| | - Zubair Ahmed
- Neuroscience and Ophthalmology, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
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Abstract
Currently available therapies for essential tremor (ET) provide sufficient control only for less than a half of patients and many unmet needs exist. This is in part due to the empiric nature of existing treatment options and persisting uncertainties about the pathogenesis of ET. The emerging concept of ET as a possible neurodegenerative disorder, better understanding of associated biochemical changes, including alterations in the γ-aminobutyric acid (GABA)-ergic system and gap junctions, and the identification of the role of the leucine-rich repeat and immunoglobulin-like domain-containing 1 (LINGO-1) gene in ET pathogenesis suggest new avenues for more targeted therapies. Here we review the most promising new approaches to treating ET, including allosteric modulation of GABA receptors and modifications of the LINGO-1 pathway. Medically refractory tremor can be successfully treated by high-frequency deep brain stimulation (DBS) of the ventral intermediate nucleus, but surgical therapies are also fraught with limitations due to adverse effects of stimulation and the loss of therapeutic response. The selection of additional thalamic and extrathalamic targets for electrode placements and the development of a closed-loop DBS system enabling automatic adjustment of stimulation parameters in response to changes in electrophysiologic brain activity are also reviewed. Tremor cancellation methods using exoskeleton and external hand-held devices are also briefly discussed.
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Affiliation(s)
- Peter Hedera
- Department of Neurology, Vanderbilt University, 465 21st Avenue South, 6140 MRB III, Nashville, TN 37240, USA
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Egawa N, Lok J, Washida K, Arai K. Mechanisms of Axonal Damage and Repair after Central Nervous System Injury. Transl Stroke Res 2016; 8:14-21. [PMID: 27566737 DOI: 10.1007/s12975-016-0495-1] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Revised: 08/14/2016] [Accepted: 08/16/2016] [Indexed: 01/19/2023]
Abstract
Central nervous system (CNS) injury initiates spatial and temporal neurodegeneration. Under pathologic conditions, damaged glial cells cannot supply sufficient metabolites to neurons, leading to energy deficiency for neuronal axons. The widespread disruption of cellular membranes causes disturbed intracellular signaling via dysregulated ionic gradients in neurons. Although several deleterious cascades are activated during the acute phase of CNS injury, some compensatory responses may tend to promote axonal repair during the chronic/remodeling phase. Because it may not be easy to block all multifactorial neurodegenerative pathways after CNS injury, supporting or boosting endogenous regenerative mechanisms would be an important therapeutic approach for CNS diseases. In this mini-review, we briefly but broadly introduce basic mechanisms that trigger axonal degeneration and then discuss potential targets for promoting axonal regeneration after CNS injury.
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Affiliation(s)
- Naohiro Egawa
- Neuroprotection Research Laboratory, Departments of Radiology and Neurology, Massachusetts General Hospital and Harvard Medical School, MGH East 149-2401, Charlestown, MA, 02129, USA
| | - Josephine Lok
- Neuroprotection Research Laboratory, Departments of Radiology and Neurology, Massachusetts General Hospital and Harvard Medical School, MGH East 149-2401, Charlestown, MA, 02129, USA.,Department of Pediatrics, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Kazuo Washida
- Neuroprotection Research Laboratory, Departments of Radiology and Neurology, Massachusetts General Hospital and Harvard Medical School, MGH East 149-2401, Charlestown, MA, 02129, USA
| | - Ken Arai
- Neuroprotection Research Laboratory, Departments of Radiology and Neurology, Massachusetts General Hospital and Harvard Medical School, MGH East 149-2401, Charlestown, MA, 02129, USA.
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Ledda F, Paratcha G. Assembly of Neuronal Connectivity by Neurotrophic Factors and Leucine-Rich Repeat Proteins. Front Cell Neurosci 2016; 10:199. [PMID: 27555809 PMCID: PMC4977320 DOI: 10.3389/fncel.2016.00199] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Accepted: 07/29/2016] [Indexed: 11/13/2022] Open
Abstract
Proper function of the nervous system critically relies on sophisticated neuronal networks interconnected in a highly specific pattern. The architecture of these connections arises from sequential developmental steps such as axonal growth and guidance, dendrite development, target determination, synapse formation and plasticity. Leucine-rich repeat (LRR) transmembrane proteins have been involved in cell-type specific signaling pathways that underlie these developmental processes. The members of this superfamily of proteins execute their functions acting as trans-synaptic cell adhesion molecules involved in target specificity and synapse formation or working in cis as cell-intrinsic modulators of neurotrophic factor receptor trafficking and signaling. In this review, we will focus on novel physiological mechanisms through which LRR proteins regulate neurotrophic factor receptor signaling, highlighting the importance of these modulatory events for proper axonal extension and guidance, tissue innervation and dendrite morphogenesis. Additionally, we discuss few examples linking this set of LRR proteins to neurodevelopmental and psychiatric disorders.
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Affiliation(s)
- Fernanda Ledda
- Division of Molecular and Cellular Neuroscience, Institute of Cell Biology and Neuroscience (IBCN)-CONICET, School of Medicine-University of Buenos Aires (UBA) Buenos Aires, Argentina
| | - Gustavo Paratcha
- Division of Molecular and Cellular Neuroscience, Institute of Cell Biology and Neuroscience (IBCN)-CONICET, School of Medicine-University of Buenos Aires (UBA) Buenos Aires, Argentina
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Targeted Inhibition of Leucine-Rich Repeat and Immunoglobulin Domain-Containing Protein 1 in Transplanted Neural Stem Cells Promotes Neuronal Differentiation and Functional Recovery in Rats Subjected to Spinal Cord Injury. Crit Care Med 2016; 44:e146-57. [PMID: 26491860 DOI: 10.1097/ccm.0000000000001351] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Leucine-rich repeat and immunoglobulin domain-containing protein (LINGO)-1 is expressed in neural stem cells, and its neutralization results in sustained neuronal immaturity. Thus, targeted inhibition of LINGO-1 via RNA interference may enhance transplanted neural stem cell survival and neuronal differentiation in vivo. Furthermore, LINGO-1 RNA interference in neural stem cells represents a potential therapeutic strategy for spinal cord injury. DESIGN Department of Spine Surgery, First Affiliated Hospital of Sun Yat-sen University. SETTING Translational Medicine Center Research Laboratory, First Affiliated Hospital of Sun Yat-sen University. SUBJECTS Female Sprague-Dawley rats. INTERVENTIONS The animals were divided into three groups that underwent laminectomy and complete spinal cord transection accompanied by transplantation of control-RNA interference-treated or LINGO-1-RNA interference-treated neural stem cells at the injured site in vivo. In vitro, neural stem cells were divided into four groups for the following treatments: control, control RNA interference lentivirus, LINGO-1 RNA interference lentivirus and LINGO-1 complementary DNA lentivirusand the Key Projects of the Natural Science Foundation of Guangdong Province (No. S2013020012818). MEASUREMENTS AND MAIN RESULTS Neural stem cells in each treatment group were examined for cell survival and neuronal differentiation in vitro and in vivo via immunofluorescence and Western blot analysis. Axonal regeneration and tissue repair were assessed via retrograde tracing using Fluorogold, electron microscopy, hematoxylin-eosin staining and MRI. Rats were also examined for functional recovery based on the measurement of spinal cord-evoked potentials and the Basso-Beattie-Bresnahan score. LINGO-1-RNA interference-treated neural stem cell transplantation increased tissue repair and functional recovery of the injured spinal cord in rats. Similarly, LINGO-1 RNA interference increased neural stem cell survival and neuronal differentiation in vitro. The mechanism underlying the effect of LINGO-1 RNA interference on the injured rat spinal cord may be that the significant inhibition of LINGO-1 expression in neural stem cells inactivated the RhoA and Notch signaling pathways, which act downstream of LINGO-1. CONCLUSIONS Our findings indicate that transplantation of LINGO-1-RNA interference-treated neural stem cells facilitates functional recovery after spinal cord injury and represents a promising potential strategy for the repair of spinal cord injury.
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Chen J, Zeng F, Forrester SJ, Eguchi S, Zhang MZ, Harris RC. Expression and Function of the Epidermal Growth Factor Receptor in Physiology and Disease. Physiol Rev 2016; 96:1025-1069. [DOI: 10.1152/physrev.00030.2015] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The epidermal growth factor receptor (EGFR) is the prototypical member of a family of membrane-associated intrinsic tyrosine kinase receptors, the ErbB family. EGFR is activated by multiple ligands, including EGF, transforming growth factor (TGF)-α, HB-EGF, betacellulin, amphiregulin, epiregulin, and epigen. EGFR is expressed in multiple organs and plays important roles in proliferation, survival, and differentiation in both development and normal physiology, as well as in pathophysiological conditions. In addition, EGFR transactivation underlies some important biologic consequences in response to many G protein-coupled receptor (GPCR) agonists. Aberrant EGFR activation is a significant factor in development and progression of multiple cancers, which has led to development of mechanism-based therapies with specific receptor antibodies and tyrosine kinase inhibitors. This review highlights the current knowledge about mechanisms and roles of EGFR in physiology and disease.
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Affiliation(s)
- Jianchun Chen
- Departments of Medicine, Cancer Biology, and Molecular Physiology and Biophysics, Vanderbilt University School of Medicine and Nashville Veterans Affairs Hospital, Nashville, Tennessee; and Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
| | - Fenghua Zeng
- Departments of Medicine, Cancer Biology, and Molecular Physiology and Biophysics, Vanderbilt University School of Medicine and Nashville Veterans Affairs Hospital, Nashville, Tennessee; and Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
| | - Steven J. Forrester
- Departments of Medicine, Cancer Biology, and Molecular Physiology and Biophysics, Vanderbilt University School of Medicine and Nashville Veterans Affairs Hospital, Nashville, Tennessee; and Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
| | - Satoru Eguchi
- Departments of Medicine, Cancer Biology, and Molecular Physiology and Biophysics, Vanderbilt University School of Medicine and Nashville Veterans Affairs Hospital, Nashville, Tennessee; and Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
| | - Ming-Zhi Zhang
- Departments of Medicine, Cancer Biology, and Molecular Physiology and Biophysics, Vanderbilt University School of Medicine and Nashville Veterans Affairs Hospital, Nashville, Tennessee; and Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
| | - Raymond C. Harris
- Departments of Medicine, Cancer Biology, and Molecular Physiology and Biophysics, Vanderbilt University School of Medicine and Nashville Veterans Affairs Hospital, Nashville, Tennessee; and Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
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Li X, Zhang Y, Yan Y, Ciric B, Ma CG, Chin J, Curtis M, Rostami A, Zhang GX. LINGO-1-Fc-Transduced Neural Stem Cells Are Effective Therapy for Chronic Stage Experimental Autoimmune Encephalomyelitis. Mol Neurobiol 2016; 54:4365-4378. [PMID: 27344330 DOI: 10.1007/s12035-016-9994-z] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 06/14/2016] [Indexed: 12/11/2022]
Abstract
The chronic stage multiple sclerosis (MS), an inflammatory demyelinating disease of the central nervous system (CNS), remains refractory to current treatments. This refractory nature may be due to the fact that current treatments are primarily immunomodulatory, which prevent further demyelination but lack the capacity to promote remyelination. Several approaches, including transplantation of neural stem cells (NSCs) or antagonists to LINGO-1, a key part of the receptor complex for neuroregeneration inhibitors, have been effective in suppressing the acute stage of experimental autoimmune encephalomyelitis (EAE), an animal model of MS. However, their effect on the chronic stage EAE is not known. Here, we show that transplantation of NSCs had only a slight therapeutic effect when treatment started at the chronic stage of EAE (e.g., injected at day 40 postimmunization). However, NSCs engineered to produce LINGO-1-Fc, a soluble LINGO-1 antagonist, significantly promoted neurological recovery as demonstrated by amelioration of clinical signs, improvement in axonal integrity, and enhancement of oligodendrocyte maturation and neuron repopulation. Significantly enhanced NAD production and Sirt2 expression were also found in the CNS of mice treated with LINGO-1-Fc-producing NSC. Moreover, differentiation of LINGO-1-Fc-producing NSCs into oligodendrocytes in vitro was largely diminished by an NAMPT inhibitor, indicating that LINGO-1-Fc enhances the NAMPT/NAD/Sirt2 pathway. Together, our study establishes a CNS-targeted, novel LINGO-1-Fc delivery system using NSCs, which represents a novel and effective NSC-based gene therapy approach for the chronic stage of MS.
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Affiliation(s)
- Xing Li
- Department of Neurology, Thomas Jefferson University, Philadelphia, PA, USA.,College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Yuan Zhang
- Department of Neurology, Thomas Jefferson University, Philadelphia, PA, USA.,College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Yaping Yan
- Department of Neurology, Thomas Jefferson University, Philadelphia, PA, USA.,College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Bogoljub Ciric
- Department of Neurology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Cun-Gen Ma
- Institute of Brain Science, Department of Neurology, Shanxi Datong University Medical School, Datong, China
| | - Jeannie Chin
- Department of Neuroscience, Baylor College of Medicine, Houston, TX, USA
| | - Mark Curtis
- Department of Neurology, Thomas Jefferson University, Philadelphia, PA, USA
| | | | - Guang-Xian Zhang
- Department of Neurology, Thomas Jefferson University, Philadelphia, PA, USA.
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Korecka J, Levy S, Isacson O. In vivo modeling of neuronal function, axonal impairment and connectivity in neurodegenerative and neuropsychiatric disorders using induced pluripotent stem cells. Mol Cell Neurosci 2016; 73:3-12. [DOI: 10.1016/j.mcn.2015.12.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Revised: 12/04/2015] [Accepted: 12/08/2015] [Indexed: 02/07/2023] Open
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