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Koupourtidou C, Schwarz V, Aliee H, Frerich S, Fischer-Sternjak J, Bocchi R, Simon-Ebert T, Bai X, Sirko S, Kirchhoff F, Dichgans M, Götz M, Theis FJ, Ninkovic J. Shared inflammatory glial cell signature after stab wound injury, revealed by spatial, temporal, and cell-type-specific profiling of the murine cerebral cortex. Nat Commun 2024; 15:2866. [PMID: 38570482 PMCID: PMC10991294 DOI: 10.1038/s41467-024-46625-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 02/29/2024] [Indexed: 04/05/2024] Open
Abstract
Traumatic brain injury leads to a highly orchestrated immune- and glial cell response partially responsible for long-lasting disability and the development of secondary neurodegenerative diseases. A holistic understanding of the mechanisms controlling the responses of specific cell types and their crosstalk is required to develop an efficient strategy for better regeneration. Here, we combine spatial and single-cell transcriptomics to chart the transcriptomic signature of the injured male murine cerebral cortex, and identify specific states of different glial cells contributing to this signature. Interestingly, distinct glial cells share a large fraction of injury-regulated genes, including inflammatory programs downstream of the innate immune-associated pathways Cxcr3 and Tlr1/2. Systemic manipulation of these pathways decreases the reactivity state of glial cells associated with poor regeneration. The functional relevance of the discovered shared signature of glial cells highlights the importance of our resource enabling comprehensive analysis of early events after brain injury.
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Affiliation(s)
- Christina Koupourtidou
- Chair of Cell Biology and Anatomy, Biomedical Center (BMC), Faculty of Medicine, LMU Munich, Planegg-Martinsried, Germany
- Graduate School of Systemic Neurosciences, LMU Munich, Munich, Germany
| | - Veronika Schwarz
- Chair of Cell Biology and Anatomy, Biomedical Center (BMC), Faculty of Medicine, LMU Munich, Planegg-Martinsried, Germany
- Graduate School of Systemic Neurosciences, LMU Munich, Munich, Germany
| | - Hananeh Aliee
- Institute of Computational Biology, Helmholtz Zentrum München-German Research Center for Environmental Health, Neuherberg, Germany
| | - Simon Frerich
- Graduate School of Systemic Neurosciences, LMU Munich, Munich, Germany
- Institute for Stroke and Dementia Research, LMU University Hospital, LMU Munich, Munich, Germany
| | - Judith Fischer-Sternjak
- Chair of Physiological Genomics, Biomedical Center (BMC), Faculty of Medicine, LMU Munich, Planegg-Martinsried, Germany
- Institute of Stem Cell Research, Helmholtz Zentrum München-German Research Center for Environmental Health, Neuherberg, Germany
| | - Riccardo Bocchi
- Chair of Physiological Genomics, Biomedical Center (BMC), Faculty of Medicine, LMU Munich, Planegg-Martinsried, Germany
- Institute of Stem Cell Research, Helmholtz Zentrum München-German Research Center for Environmental Health, Neuherberg, Germany
- Department of Basic Neurosciences, University of Geneva, Geneva, Switzerland
| | - Tatiana Simon-Ebert
- Chair of Physiological Genomics, Biomedical Center (BMC), Faculty of Medicine, LMU Munich, Planegg-Martinsried, Germany
- Institute of Stem Cell Research, Helmholtz Zentrum München-German Research Center for Environmental Health, Neuherberg, Germany
| | - Xianshu Bai
- Molecular Physiology, Center for Integrative Physiology and Molecular Medicine, University of Saarland, Homburg, Germany
- Center for Gender-specific Biology and Medicine (CGBM), University of Saarland, Homburg, Germany
| | - Swetlana Sirko
- Chair of Physiological Genomics, Biomedical Center (BMC), Faculty of Medicine, LMU Munich, Planegg-Martinsried, Germany
- Institute of Stem Cell Research, Helmholtz Zentrum München-German Research Center for Environmental Health, Neuherberg, Germany
| | - Frank Kirchhoff
- Molecular Physiology, Center for Integrative Physiology and Molecular Medicine, University of Saarland, Homburg, Germany
- Center for Gender-specific Biology and Medicine (CGBM), University of Saarland, Homburg, Germany
- Experimental Research Center for Normal and Pathological Aging, University of Medicine and Pharmacy of Craiova, 200349, Craiova, Romania
| | - Martin Dichgans
- Institute for Stroke and Dementia Research, LMU University Hospital, LMU Munich, Munich, Germany
- Munich Cluster for Systems Neurology SYNERGY, LMU Munich, Munich, Germany
- German Centre for Neurodegenerative Diseases, Munich, Germany
| | - Magdalena Götz
- Chair of Physiological Genomics, Biomedical Center (BMC), Faculty of Medicine, LMU Munich, Planegg-Martinsried, Germany
- Institute of Stem Cell Research, Helmholtz Zentrum München-German Research Center for Environmental Health, Neuherberg, Germany
- Munich Cluster for Systems Neurology SYNERGY, LMU Munich, Munich, Germany
| | - Fabian J Theis
- Institute of Computational Biology, Helmholtz Zentrum München-German Research Center for Environmental Health, Neuherberg, Germany
- Department of Mathematics, Technical University of Munich, Munich, Germany
| | - Jovica Ninkovic
- Chair of Cell Biology and Anatomy, Biomedical Center (BMC), Faculty of Medicine, LMU Munich, Planegg-Martinsried, Germany.
- Institute of Stem Cell Research, Helmholtz Zentrum München-German Research Center for Environmental Health, Neuherberg, Germany.
- Munich Cluster for Systems Neurology SYNERGY, LMU Munich, Munich, Germany.
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2
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Cho M, Han JK, Suh J, Kim JJ, Ryu JR, Min IS, Sang M, Lim S, Kim TS, Kim K, Kang K, Hwang K, Kim K, Hong EB, Nam MH, Kim J, Song YM, Lee GJ, Cho IJ, Yu KJ. Fully bioresorbable hybrid opto-electronic neural implant system for simultaneous electrophysiological recording and optogenetic stimulation. Nat Commun 2024; 15:2000. [PMID: 38448437 PMCID: PMC10917781 DOI: 10.1038/s41467-024-45803-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 02/05/2024] [Indexed: 03/08/2024] Open
Abstract
Bioresorbable neural implants based on emerging classes of biodegradable materials offer a promising solution to the challenges of secondary surgeries for removal of implanted devices required for existing neural implants. In this study, we introduce a fully bioresorbable flexible hybrid opto-electronic system for simultaneous electrophysiological recording and optogenetic stimulation. The flexible and soft device, composed of biodegradable materials, has a direct optical and electrical interface with the curved cerebral cortex surface while exhibiting excellent biocompatibility. Optimized to minimize light transmission losses and photoelectric artifact interference, the device was chronically implanted in the brain of transgenic mice and performed to photo-stimulate the somatosensory area while recording local field potentials. Thus, the presented hybrid neural implant system, comprising biodegradable materials, promises to provide monitoring and therapy modalities for versatile applications in biomedicine.
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Affiliation(s)
- Myeongki Cho
- Functional Bio-integrated Electronics and Energy Management Lab, School of Electrical and Electronic Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Jeong-Kyu Han
- Brain Science Institute, Korea Institute of Science and Technology, 5. Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792, Republic of Korea
| | - Jungmin Suh
- Functional Bio-integrated Electronics and Energy Management Lab, School of Electrical and Electronic Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Jeong Jin Kim
- Department of Electronics Engineering, Pusan National University, 2, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan, 46241, Republic of Korea
| | - Jae Ryun Ryu
- Department of Anatomy, College of Medicine, Korea University, 17-gil Koryodae-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - In Sik Min
- Functional Bio-integrated Electronics and Energy Management Lab, School of Electrical and Electronic Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Mingyu Sang
- Functional Bio-integrated Electronics and Energy Management Lab, School of Electrical and Electronic Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Selin Lim
- Functional Bio-integrated Electronics and Energy Management Lab, School of Electrical and Electronic Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Tae Soo Kim
- Functional Bio-integrated Electronics and Energy Management Lab, School of Electrical and Electronic Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Kyubeen Kim
- Functional Bio-integrated Electronics and Energy Management Lab, School of Electrical and Electronic Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Kyowon Kang
- Functional Bio-integrated Electronics and Energy Management Lab, School of Electrical and Electronic Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Kyuhyun Hwang
- School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Kanghwan Kim
- Brain Science Institute, Korea Institute of Science and Technology, 5. Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792, Republic of Korea
| | - Eun-Bin Hong
- Center for Brain Function, Korea Institute of Science and Technology 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792, Republic of Korea
| | - Min-Ho Nam
- Center for Brain Function, Korea Institute of Science and Technology 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792, Republic of Korea
| | - Jongbaeg Kim
- School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Young Min Song
- School of Electrical Engineering and Computer Science (EECS), Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea
| | - Gil Ju Lee
- Department of Electronics Engineering, Pusan National University, 2, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan, 46241, Republic of Korea.
| | - Il-Joo Cho
- Department of Convergence Medicine, College of Medicine, Korea University, 17-gil Koryodae-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea.
- Department of Anatomy, College of Medicine, Korea University, 7-gil Koryodae-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea.
| | - Ki Jun Yu
- Functional Bio-integrated Electronics and Energy Management Lab, School of Electrical and Electronic Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
- Department of Electrical and Electronic Engineering, YU-Korea Institute of Science and Technology (KIST) Institute, Yonsei University, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea.
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Schilder AGM, Wolpert S, Saeed S, Middelink LM, Edge ASB, Blackshaw H, Pastiadis K, Bibas AG. A phase I/IIa safety and efficacy trial of intratympanic gamma-secretase inhibitor as a regenerative drug treatment for sensorineural hearing loss. Nat Commun 2024; 15:1896. [PMID: 38429256 PMCID: PMC10907343 DOI: 10.1038/s41467-024-45784-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 02/01/2024] [Indexed: 03/03/2024] Open
Abstract
Inhibition of Notch signalling with a gamma-secretase inhibitor (GSI) induces mammalian hair cell regeneration and partial hearing restoration. In this proof-of-concept Phase I/IIa multiple-ascending dose open-label trial (ISRCTN59733689), adults with mild-moderate sensorineural hearing loss received 3 intratympanic injections of GSI LY3056480, in 1 ear over 2 weeks. Phase I primary outcome was safety and tolerability. Phase lla primary outcome was change from baseline to 12 weeks in average pure-tone air conduction threshold across 2,4,8 kHz. Secondary outcomes included this outcome at 6 weeks and change from baseline to 6 and 12 weeks in pure-tone thresholds at individual frequencies, speech reception thresholds (SRTs), Distortion Product Otoacoustic Emissions (DPOAE) amplitudes, Signal to Noise Ratios (SNRs) and distribution of categories normal, present-abnormal, absent and Hearing Handicap Inventory for Adults/Elderly (HHIA/E). In Phase I (N = 15, 1 site) there were no severe nor serious adverse events. In Phase IIa (N = 44, 3 sites) the average pure-tone threshold across 2,4,8 kHz did not change from baseline to 6 and 12 weeks (estimated change -0.87 dB; 95% CI -2.37 to 0.63; P = 0.252 and -0.46 dB; 95% CI -1.94 to 1.03; P = 0.545, respectively), nor did the means of secondary measures. DPOAE amplitudes, SNRs and distribution of categories did not change from baseline to 6 and 12 weeks, nor did SRTs and HHIA/E scores. Intratympanic delivery of LY3056480 is safe and well-tolerated; the trial's primary endpoint was not met.
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Affiliation(s)
- Anne G M Schilder
- National Institute for Health Research University College London Hospitals Biomedical Research Centre, London, UK
- Ear Institute, University College London, London, UK
- Royal National ENT and Eastman Dental Hospitals, University College London Hospitals Trust, London, UK
| | - Stephan Wolpert
- Department of Otolaryngology, Head and Neck Surgery, University of Tübingen, Tübingen, Germany.
| | - Shakeel Saeed
- National Institute for Health Research University College London Hospitals Biomedical Research Centre, London, UK
- Ear Institute, University College London, London, UK
- Royal National ENT and Eastman Dental Hospitals, University College London Hospitals Trust, London, UK
| | | | - Albert S B Edge
- Department of Otolaryngology, Harvard Medical School, Boston, USA
| | - Helen Blackshaw
- National Institute for Health Research University College London Hospitals Biomedical Research Centre, London, UK
- Ear Institute, University College London, London, UK
| | - Kostas Pastiadis
- 1st Department of Otolaryngology, Hippocration Hospital Athens, National & Kapodistrian University of Athens, Athens, Greece
| | - Athanasios G Bibas
- 1st Department of Otolaryngology, Hippocration Hospital Athens, National & Kapodistrian University of Athens, Athens, Greece
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4
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Li Q, Gan X, Zhang M, Zhang G, Li Y, Gao L. Erianin promotes endogenous neurogenesis in traumatic brain injury rats. Sci Rep 2024; 14:4108. [PMID: 38374284 PMCID: PMC10876537 DOI: 10.1038/s41598-023-50573-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 12/21/2023] [Indexed: 02/21/2024] Open
Abstract
The objective of this study was to explore the positive influence and potential mechanism of Erianin on the recovery of brain cells following a traumatic brain injury (TBI). TBI rat models were prepared and treated with Erianin injection via tail vein. The assessment included evaluating the rats' levels of oxidative stress, inflammation, neuronal damage, mitochondrial damage, neuronal regeneration, transformation of pro-inflammatory microglial cells, activation status of the ERK signal pathway, and the functionality of their learning and memory. After administering Erianin, there was a suppression of oxidative stress, inflammation, nerve cell damage, and mitochondrial damage in the TBI rats. Additionally, there was an increase in neuronal regeneration in the cortex and hippocampus, inhibition of pro-inflammatory microglial cell transformation in the cortex, improvement in learning and memory function in TBI rats, and simultaneous inhibition of the activation of the ERK1/c-Jun signal pathway. The findings suggest that Erianin has the potential to reduce oxidative stress and inflammatory reaction in rats with TBI, safeguard nerve cells against apoptosis, stimulate the growth of new neural cells, ultimately enhancing the cognitive abilities and memory function of the rats. The inhibition of the ERK signaling pathway could be closely associated with these effects.
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Affiliation(s)
- Qingquan Li
- Department of Neurosurgery, Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xiaokui Gan
- Department of Neurosurgery, Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Ming Zhang
- Department of Neurosurgery, Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Guangmin Zhang
- Department of Neurosurgery, Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yingbin Li
- Department of Neurosurgery, Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Liang Gao
- Department of Shanghai Tenth People's Hospital Clinical Medical College, Nanjing Medical University, Nanjing, China.
- Department of Neurosurgery, Shanghai Tenth People's Hospital, Tongji University, No. 301 Extend Middle Road, Shanghai, 200072, China.
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5
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Paterno R, Vu T, Hsieh C, Baraban SC. Host brain environmental influences on transplanted medial ganglionic eminence progenitors. Sci Rep 2024; 14:3610. [PMID: 38351191 PMCID: PMC10864292 DOI: 10.1038/s41598-024-52478-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 01/19/2024] [Indexed: 02/16/2024] Open
Abstract
Interneuron progenitor transplantation can ameliorate disease symptoms in a variety of neurological disorders. The strategy is based on transplantation of embryonic medial ganglionic eminence (MGE) progenitors. Elucidating how host brain environment influences the integration of interneuron progenitors is critical for optimizing this strategy across different disease states. Here, we systematically evaluated the influence of age and brain region on survival, migration, and differentiation of transplant-derived cells. We find that early postnatal MGE transplantation yields superior survival and more extensive migratory capabilities compared to transplantation during the juvenile or adult stages. MGE progenitors migrate more widely in the cortex compared to the hippocampus. Maturation to interneuron subtypes is regulated by age and brain region. MGE progenitors transplanted into the dentate gyrus sub-region of the early postnatal hippocampus can differentiate into astrocytes. Our results suggest that the host brain environment critically regulates survival, spatial distribution, and maturation of MGE-derived interneurons following transplantation. These findings inform and enable optimal conditions for interneuron transplant therapies.
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Affiliation(s)
- Rosalia Paterno
- Department of Neurological Surgery and Weill Institute of Neuroscience, University of California, 513 Parnassus Ave, Health Science East, E840, San Francisco, CA, 94143, USA.
| | - Thy Vu
- Department of Neurological Surgery and Weill Institute of Neuroscience, University of California, 513 Parnassus Ave, Health Science East, E840, San Francisco, CA, 94143, USA
| | - Caroline Hsieh
- Department of Neurological Surgery and Weill Institute of Neuroscience, University of California, 513 Parnassus Ave, Health Science East, E840, San Francisco, CA, 94143, USA
| | - Scott C Baraban
- Department of Neurological Surgery and Weill Institute of Neuroscience, University of California, 513 Parnassus Ave, Health Science East, E840, San Francisco, CA, 94143, USA
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Mendonça LS, Henriques D, Fernandes V, Moreira R, Brás J, Duarte S, Schwamborn JC, de Almeida LP. Graft-derived neurons and bystander effects are maintained for six months after human iPSC-derived NESC transplantation in mice's cerebella. Sci Rep 2024; 14:3236. [PMID: 38332227 PMCID: PMC10853537 DOI: 10.1038/s41598-024-53542-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 02/01/2024] [Indexed: 02/10/2024] Open
Abstract
Machado-Joseph disease (MJD) is a neurodegenerative disorder characterized by widespread neuronal death affecting the cerebellum. Cell therapy can trigger neuronal replacement and neuroprotection through bystander effects providing a therapeutic option for neurodegenerative diseases. Here, human control (CNT) and MJD iPSC-derived neuroepithelial stem cells (NESC) were established and tested for their therapeutic potential. Cells' neuroectodermal phenotype was demonstrated. Brain organoids obtained from the Control NESC showed higher mRNA levels of genes related to stem cells' bystander effects, such as BDNF, NEUROD1, and NOTCH1, as compared with organoids produced from MJD NESC, suggesting that Control NESC have a higher therapeutic potential. Graft-derived glia and neurons, such as cells positive for markers of cerebellar neurons, were detected six months after NESC transplantation in mice cerebella. The graft-derived neurons established excitatory and inhibitory synapses in the host cerebella, although CNT neurons exhibited higher excitatory synapse numbers compared with MJD neurons. Cell grafts, mainly CNT NESC, sustained the bystander effects through modulation of inflammatory interleukins (IL1B and IL10), neurotrophic factors (NGF), and neurogenesis-related proteins (Msi1 and NeuroD1), for six months in the mice cerebella. Altogether this study demonstrates the long-lasting therapeutic potential of human iPSC-derived NESC in the cerebellum.
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Affiliation(s)
- Liliana S Mendonça
- Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.
- Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal.
- Institute of Interdisciplinary Research, University of Coimbra, Coimbra, Portugal.
| | - Daniel Henriques
- Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal
- Institute of Interdisciplinary Research, University of Coimbra, Coimbra, Portugal
| | - Vanessa Fernandes
- Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
| | - Ricardo Moreira
- Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal
- Faculty of Pharmacy, University of Coimbra, Coimbra, Portugal
| | - João Brás
- Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
| | - Sónia Duarte
- Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal
- Institute of Interdisciplinary Research, University of Coimbra, Coimbra, Portugal
| | - Jens C Schwamborn
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, Belvaux, Luxembourg
| | - Luís Pereira de Almeida
- Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.
- Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal.
- Faculty of Pharmacy, University of Coimbra, Coimbra, Portugal.
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7
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Hu J, Melchor GS, Ladakis D, Reger J, Kim HW, Chamberlain KA, Shults NV, Oft HC, Smith VN, Rosko LM, Li E, Baydyuk M, Fu MM, Bhargava P, Huang JK. Myeloid cell-associated aromatic amino acid metabolism facilitates CNS myelin regeneration. NPJ Regen Med 2024; 9:1. [PMID: 38167866 PMCID: PMC10762216 DOI: 10.1038/s41536-023-00345-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 12/14/2023] [Indexed: 01/05/2024] Open
Abstract
Regulation of myeloid cell activity is critical for successful myelin regeneration (remyelination) in demyelinating diseases, such as multiple sclerosis (MS). Here, we show aromatic alpha-keto acids (AKAs) generated from the amino acid oxidase, interleukin-4 induced 1 (IL4I1), promote efficient remyelination in mouse models of MS. During remyelination, myeloid cells upregulated the expression of IL4I1. Conditionally knocking out IL4I1 in myeloid cells impaired remyelination efficiency. Mice lacking IL4I1 expression exhibited a reduction in the AKAs, phenylpyruvate, indole-3-pyruvate, and 4-hydroxyphenylpyruvate, in remyelinating lesions. Decreased AKA levels were also observed in people with MS, particularly in the progressive phase when remyelination is impaired. Oral administration of AKAs modulated myeloid cell-associated inflammation, promoted oligodendrocyte maturation, and enhanced remyelination in mice with focal demyelinated lesions. Transcriptomic analysis revealed AKA treatment induced a shift in metabolic pathways in myeloid cells and upregulated aryl hydrocarbon receptor activity in lesions. Our results suggest myeloid cell-associated aromatic amino acid metabolism via IL4I1 produces AKAs in demyelinated lesions to enable efficient remyelination. Increasing AKA levels or targeting related pathways may serve as a strategy to facilitate the regeneration of myelin in inflammatory demyelinating conditions.
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Affiliation(s)
- Jingwen Hu
- Department of Biology, Georgetown University, Washington, DC, 20007, USA
| | - George S Melchor
- Department of Biology, Georgetown University, Washington, DC, 20007, USA
- Interdisciplinary Program in Neuroscience, Georgetown University, Washington, DC, 20007, USA
| | - Dimitrios Ladakis
- Division of Neuroimmunology and Neurological Infections, Johns Hopkins University, Baltimore, MD, 21287, USA
| | - Joan Reger
- Department of Biology, Georgetown University, Washington, DC, 20007, USA
- National Institute of Neurological Disorders and Stroke (NINDS), National Institutes of Health (NIH), Bethesda, MD, 20892, USA
| | - Hee Won Kim
- Department of Biology, Georgetown University, Washington, DC, 20007, USA
| | - Kelly A Chamberlain
- Department of Biology, Georgetown University, Washington, DC, 20007, USA
- Interdisciplinary Program in Neuroscience, Georgetown University, Washington, DC, 20007, USA
| | - Nataliia V Shults
- Department of Biology, Georgetown University, Washington, DC, 20007, USA
| | - Helena C Oft
- Department of Biology, Georgetown University, Washington, DC, 20007, USA
| | - Victoria N Smith
- Department of Biology, Georgetown University, Washington, DC, 20007, USA
| | - Lauren M Rosko
- Department of Biology, Georgetown University, Washington, DC, 20007, USA
- Interdisciplinary Program in Neuroscience, Georgetown University, Washington, DC, 20007, USA
| | - Erqiu Li
- Department of Biology, Georgetown University, Washington, DC, 20007, USA
| | - Maryna Baydyuk
- Department of Biology, Georgetown University, Washington, DC, 20007, USA
| | - Meng-Meng Fu
- National Institute of Neurological Disorders and Stroke (NINDS), National Institutes of Health (NIH), Bethesda, MD, 20892, USA
| | - Pavan Bhargava
- Division of Neuroimmunology and Neurological Infections, Johns Hopkins University, Baltimore, MD, 21287, USA
| | - Jeffrey K Huang
- Department of Biology, Georgetown University, Washington, DC, 20007, USA.
- Interdisciplinary Program in Neuroscience, Georgetown University, Washington, DC, 20007, USA.
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8
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Lyu P, Iribarne M, Serjanov D, Zhai Y, Hoang T, Campbell LJ, Boyd P, Palazzo I, Nagashima M, Silva NJ, Hitchcock PF, Qian J, Hyde DR, Blackshaw S. Common and divergent gene regulatory networks control injury-induced and developmental neurogenesis in zebrafish retina. Nat Commun 2023; 14:8477. [PMID: 38123561 PMCID: PMC10733277 DOI: 10.1038/s41467-023-44142-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 12/01/2023] [Indexed: 12/23/2023] Open
Abstract
Following acute retinal damage, zebrafish possess the ability to regenerate all neuronal subtypes through Müller glia (MG) reprogramming and asymmetric cell division that produces a multipotent Müller glia-derived neuronal progenitor cell (MGPC). This raises three key questions. First, do MG reprogram to a developmental retinal progenitor cell (RPC) state? Second, to what extent does regeneration recapitulate retinal development? And finally, does loss of different retinal cell subtypes induce unique MG regeneration responses? We examined these questions by performing single-nuclear and single-cell RNA-Seq and ATAC-Seq in both developing and regenerating retinas. Here we show that injury induces MG to reprogram to a state similar to late-stage RPCs. However, there are major transcriptional differences between MGPCs and RPCs, as well as major transcriptional differences between activated MG and MGPCs when different retinal cell subtypes are damaged. Validation of candidate genes confirmed that loss of different subtypes induces differences in transcription factor gene expression and regeneration outcomes.
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Affiliation(s)
- Pin Lyu
- Department of Ophthalmology, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
| | - Maria Iribarne
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, 46556, USA
- Center for Stem Cells and Regenerative Medicine, University of Notre Dame, Notre Dame, IN, 46556, USA
- Center for Zebrafish Research, University of Notre Dame, Notre Dame, IN, 46556, USA
| | - Dmitri Serjanov
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, 46556, USA
- Center for Stem Cells and Regenerative Medicine, University of Notre Dame, Notre Dame, IN, 46556, USA
- Center for Zebrafish Research, University of Notre Dame, Notre Dame, IN, 46556, USA
| | - Yijie Zhai
- Department of Ophthalmology, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
| | - Thanh Hoang
- Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
- Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
| | - Leah J Campbell
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, 46556, USA
- Center for Stem Cells and Regenerative Medicine, University of Notre Dame, Notre Dame, IN, 46556, USA
- Center for Zebrafish Research, University of Notre Dame, Notre Dame, IN, 46556, USA
| | - Patrick Boyd
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, 46556, USA
- Center for Stem Cells and Regenerative Medicine, University of Notre Dame, Notre Dame, IN, 46556, USA
- Center for Zebrafish Research, University of Notre Dame, Notre Dame, IN, 46556, USA
| | - Isabella Palazzo
- Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
| | - Mikiko Nagashima
- Department of Ophthalmology and Visual Sciences, University of Michigan School of Medicine, Ann Arbor, MI, 48105, USA
| | - Nicholas J Silva
- Department of Ophthalmology and Visual Sciences, University of Michigan School of Medicine, Ann Arbor, MI, 48105, USA
| | - Peter F Hitchcock
- Department of Ophthalmology and Visual Sciences, University of Michigan School of Medicine, Ann Arbor, MI, 48105, USA
| | - Jiang Qian
- Department of Ophthalmology, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA.
| | - David R Hyde
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, 46556, USA.
- Center for Stem Cells and Regenerative Medicine, University of Notre Dame, Notre Dame, IN, 46556, USA.
- Center for Zebrafish Research, University of Notre Dame, Notre Dame, IN, 46556, USA.
| | - Seth Blackshaw
- Department of Ophthalmology, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA.
- Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA.
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA.
- Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA.
- Kavli Neuroscience Discovery Institute, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA.
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9
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Winter CC, Jacobi A, Su J, Chung L, van Velthoven CTJ, Yao Z, Lee C, Zhang Z, Yu S, Gao K, Duque Salazar G, Kegeles E, Zhang Y, Tomihiro MC, Zhang Y, Yang Z, Zhu J, Tang J, Song X, Donahue RJ, Wang Q, McMillen D, Kunst M, Wang N, Smith KA, Romero GE, Frank MM, Krol A, Kawaguchi R, Geschwind DH, Feng G, Goodrich LV, Liu Y, Tasic B, Zeng H, He Z. A transcriptomic taxonomy of mouse brain-wide spinal projecting neurons. Nature 2023; 624:403-414. [PMID: 38092914 PMCID: PMC10719099 DOI: 10.1038/s41586-023-06817-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Accepted: 11/01/2023] [Indexed: 12/17/2023]
Abstract
The brain controls nearly all bodily functions via spinal projecting neurons (SPNs) that carry command signals from the brain to the spinal cord. However, a comprehensive molecular characterization of brain-wide SPNs is still lacking. Here we transcriptionally profiled a total of 65,002 SPNs, identified 76 region-specific SPN types, and mapped these types into a companion atlas of the whole mouse brain1. This taxonomy reveals a three-component organization of SPNs: (1) molecularly homogeneous excitatory SPNs from the cortex, red nucleus and cerebellum with somatotopic spinal terminations suitable for point-to-point communication; (2) heterogeneous populations in the reticular formation with broad spinal termination patterns, suitable for relaying commands related to the activities of the entire spinal cord; and (3) modulatory neurons expressing slow-acting neurotransmitters and/or neuropeptides in the hypothalamus, midbrain and reticular formation for 'gain setting' of brain-spinal signals. In addition, this atlas revealed a LIM homeobox transcription factor code that parcellates the reticulospinal neurons into five molecularly distinct and spatially segregated populations. Finally, we found transcriptional signatures of a subset of SPNs with large soma size and correlated these with fast-firing electrophysiological properties. Together, this study establishes a comprehensive taxonomy of brain-wide SPNs and provides insight into the functional organization of SPNs in mediating brain control of bodily functions.
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Affiliation(s)
- Carla C Winter
- F. M. Kirby Neurobiology Center, Boston Children's Hospital, Boston, MA, USA
- Department of Neurology, Harvard Medical School, Boston, MA, USA
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
- PhD Program in Biological and Biomedical Sciences, Harvard Medical School, Boston, MA, USA
- Harvard-MIT MD-PhD Program, Harvard Medical School, Boston, MA, USA
| | - Anne Jacobi
- F. M. Kirby Neurobiology Center, Boston Children's Hospital, Boston, MA, USA.
- Department of Neurology, Harvard Medical School, Boston, MA, USA.
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA.
- F. Hoffman-La Roche, pRED, Basel, Switzerland.
| | - Junfeng Su
- F. M. Kirby Neurobiology Center, Boston Children's Hospital, Boston, MA, USA
- Department of Neurology, Harvard Medical School, Boston, MA, USA
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Leeyup Chung
- F. M. Kirby Neurobiology Center, Boston Children's Hospital, Boston, MA, USA
- Department of Neurology, Harvard Medical School, Boston, MA, USA
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | | | - Zizhen Yao
- Allen Institute for Brain Science, Seattle, WA, USA
| | - Changkyu Lee
- Allen Institute for Brain Science, Seattle, WA, USA
| | - Zicong Zhang
- F. M. Kirby Neurobiology Center, Boston Children's Hospital, Boston, MA, USA
- Department of Neurology, Harvard Medical School, Boston, MA, USA
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Shuguang Yu
- F. M. Kirby Neurobiology Center, Boston Children's Hospital, Boston, MA, USA
- Department of Neurology, Harvard Medical School, Boston, MA, USA
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Kun Gao
- Semel Institute for Neuroscience and Human Behavior, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
- Program in Neurogenetics, Department of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - Geraldine Duque Salazar
- F. M. Kirby Neurobiology Center, Boston Children's Hospital, Boston, MA, USA
- Department of Neurology, Harvard Medical School, Boston, MA, USA
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Evgenii Kegeles
- F. M. Kirby Neurobiology Center, Boston Children's Hospital, Boston, MA, USA
- Department of Neurology, Harvard Medical School, Boston, MA, USA
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
- PhD Program in Biological and Biomedical Sciences, Harvard Medical School, Boston, MA, USA
| | - Yu Zhang
- F. M. Kirby Neurobiology Center, Boston Children's Hospital, Boston, MA, USA
- Department of Neurology, Harvard Medical School, Boston, MA, USA
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Makenzie C Tomihiro
- F. M. Kirby Neurobiology Center, Boston Children's Hospital, Boston, MA, USA
- Department of Neurology, Harvard Medical School, Boston, MA, USA
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Yiming Zhang
- F. M. Kirby Neurobiology Center, Boston Children's Hospital, Boston, MA, USA
- Department of Neurology, Harvard Medical School, Boston, MA, USA
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Zhiyun Yang
- F. M. Kirby Neurobiology Center, Boston Children's Hospital, Boston, MA, USA
- Department of Neurology, Harvard Medical School, Boston, MA, USA
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Junjie Zhu
- F. M. Kirby Neurobiology Center, Boston Children's Hospital, Boston, MA, USA
- Department of Neurology, Harvard Medical School, Boston, MA, USA
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Jing Tang
- F. M. Kirby Neurobiology Center, Boston Children's Hospital, Boston, MA, USA
- Department of Neurology, Harvard Medical School, Boston, MA, USA
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Xuan Song
- F. M. Kirby Neurobiology Center, Boston Children's Hospital, Boston, MA, USA
- Department of Neurology, Harvard Medical School, Boston, MA, USA
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Ryan J Donahue
- F. M. Kirby Neurobiology Center, Boston Children's Hospital, Boston, MA, USA
- Department of Neurology, Harvard Medical School, Boston, MA, USA
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Qing Wang
- Semel Institute for Neuroscience and Human Behavior, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
- Program in Neurogenetics, Department of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | | | | | - Ning Wang
- Allen Institute for Brain Science, Seattle, WA, USA
| | | | - Gabriel E Romero
- Department of Neurobiology, Harvard Medical School, Boston, MA, USA
| | - Michelle M Frank
- Department of Neurobiology, Harvard Medical School, Boston, MA, USA
| | - Alexandra Krol
- McGovern Institute for Brain Research, Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Riki Kawaguchi
- Semel Institute for Neuroscience and Human Behavior, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
- Program in Neurogenetics, Department of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - Daniel H Geschwind
- Semel Institute for Neuroscience and Human Behavior, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
- Program in Neurogenetics, Department of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - Guoping Feng
- McGovern Institute for Brain Research, Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Lisa V Goodrich
- Department of Neurobiology, Harvard Medical School, Boston, MA, USA
| | - Yuanyuan Liu
- Somatosensation and Pain Unit, National Institute of Dental and Craniofacial Research, National Center for Complementary and Integrative Health, National Institutes of Health, Bethesda, MD, USA
| | | | - Hongkui Zeng
- Allen Institute for Brain Science, Seattle, WA, USA.
| | - Zhigang He
- F. M. Kirby Neurobiology Center, Boston Children's Hospital, Boston, MA, USA.
- Department of Neurology, Harvard Medical School, Boston, MA, USA.
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA.
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10
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Salikhova DI, Timofeeva AV, Golovicheva VV, Fatkhudinov TK, Shevtsova YA, Soboleva AG, Fedorov IS, Goryunov KV, Dyakonov AS, Mokrousova VO, Shedenkova MO, Elchaninov AV, Makhnach OV, Kutsev SI, Chekhonin VP, Silachev DN, Goldshtein DV. Extracellular vesicles of human glial cells exert neuroprotective effects via brain miRNA modulation in a rat model of traumatic brain injury. Sci Rep 2023; 13:20388. [PMID: 37989873 PMCID: PMC10663567 DOI: 10.1038/s41598-023-47627-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Accepted: 11/16/2023] [Indexed: 11/23/2023] Open
Abstract
Stem cell-based therapeutic approaches for neurological disorders are widely studied. Paracrine factors secreted by stem cells in vitro and delivered intranasally might allow bypassing the disadvantages associated with a surgical cell delivery procedure with likely immune rejection of a transplant. In this study, we investigated the therapeutic effect of the extracellular vesicles secreted by glial progenitor cells (GPC-EV) derived from human induced pluripotent stem cell in a traumatic brain injury model. Intranasal administration of GPC-EV to Wistar rats for 6 days improved sensorimotor functions assessed over a 14-day observation period. Beside, deep sequencing of microRNA transcriptome of GPC-EV was estimate, and was revealed 203 microRNA species that might be implicated in prevention of various brain pathologies. Modulation of microRNA pools might contribute to the observed decrease in the number of astrocytes that inhibit neurorecovery processes while enhancing neuroplasticity by decreasing phosphorylated Tau forms, preventing inflammation and apoptosis associated with secondary damage to brain tissue. The course of GPC-EV administration was promoted the increasing protein levels of NF-κB in studied areas of the rat brain, indicating NF-κB dependent mechanisms as a plausible route of neuroprotection within the damaged area. This investigation showed that GPC-EV may be representing a therapeutic approach in traumatic brain injury, though its translation into the clinic would require an additional research and development.
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Affiliation(s)
- Diana I Salikhova
- Institute of Molecular and Cellular Medicine, Medical Institute, RUDN University, Moscow, Russian Federation, 117198.
- Research Centre for Medical Genetics, Moscow, Russian Federation, 115522.
| | - Angelika V Timofeeva
- V.I. Kulakov National Medical Research Center of Obstetrics, Gynecology and Perinatology, Moscow, Russian Federation, 117997
| | - Victoria V Golovicheva
- A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russian Federation, 119992
| | - Timur Kh Fatkhudinov
- Institute of Molecular and Cellular Medicine, Medical Institute, RUDN University, Moscow, Russian Federation, 117198
- Avtsyn Research Institute of Human Morphology of Federal State Budgetary Scientific Institution "Petrovsky National Research Centre of Surgery", Moscow, Russian Federation, 117418
| | - Yulia A Shevtsova
- V.I. Kulakov National Medical Research Center of Obstetrics, Gynecology and Perinatology, Moscow, Russian Federation, 117997
- Faculty of Bioengineering and Bioinformatics, Lomonosov Moscow State University, Moscow, Russian Federation, 119234
| | - Anna G Soboleva
- Institute of Molecular and Cellular Medicine, Medical Institute, RUDN University, Moscow, Russian Federation, 117198
- Avtsyn Research Institute of Human Morphology of Federal State Budgetary Scientific Institution "Petrovsky National Research Centre of Surgery", Moscow, Russian Federation, 117418
| | - Ivan S Fedorov
- V.I. Kulakov National Medical Research Center of Obstetrics, Gynecology and Perinatology, Moscow, Russian Federation, 117997
| | - Kirill V Goryunov
- V.I. Kulakov National Medical Research Center of Obstetrics, Gynecology and Perinatology, Moscow, Russian Federation, 117997
| | | | | | - Margarita O Shedenkova
- Institute of Molecular and Cellular Medicine, Medical Institute, RUDN University, Moscow, Russian Federation, 117198
- Research Centre for Medical Genetics, Moscow, Russian Federation, 115522
| | - Andrey V Elchaninov
- Avtsyn Research Institute of Human Morphology of Federal State Budgetary Scientific Institution "Petrovsky National Research Centre of Surgery", Moscow, Russian Federation, 117418
| | - Oleg V Makhnach
- Research Centre for Medical Genetics, Moscow, Russian Federation, 115522
| | - Sergey I Kutsev
- Research Centre for Medical Genetics, Moscow, Russian Federation, 115522
| | - Vladimir P Chekhonin
- The Serbsky State Scientific Center for Social and Forensic Psychiatry, Moscow, Russian Federation, 119034
| | - Denis N Silachev
- A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russian Federation, 119992.
| | - Dmitry V Goldshtein
- Institute of Molecular and Cellular Medicine, Medical Institute, RUDN University, Moscow, Russian Federation, 117198
- Research Centre for Medical Genetics, Moscow, Russian Federation, 115522
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11
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Lee DM, Kang M, Hyun I, Park BJ, Kim HJ, Nam SH, Yoon HJ, Ryu H, Park HM, Choi BO, Kim SW. An on-demand bioresorbable neurostimulator. Nat Commun 2023; 14:7315. [PMID: 37951985 PMCID: PMC10640647 DOI: 10.1038/s41467-023-42791-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 10/20/2023] [Indexed: 11/14/2023] Open
Abstract
Bioresorbable bioelectronics, with their natural degradation properties, hold significant potential to eliminate the need for surgical removal. Despite notable achievements, two major challenges hinder their practical application in medical settings. First, they necessitate sustainable energy solutions with biodegradable components via biosafe powering mechanisms. More importantly, reliability in their function is undermined by unpredictable device lifetimes due to the complex polymer degradation kinetics. Here, we propose an on-demand bioresorbable neurostimulator to address these issues, thus allowing for clinical operations to be manipulated using biosafe ultrasound sources. Our ultrasound-mediated transient mechanism enables (1) electrical stimulation through transcutaneous ultrasound-driven triboelectricity and (2) rapid device elimination using high-intensity ultrasound without adverse health effects. Furthermore, we perform neurophysiological analyses to show that our neurostimulator provides therapeutic benefits for both compression peripheral nerve injury and hereditary peripheral neuropathy. We anticipate that the on-demand bioresorbable neurostimulator will prove useful in the development of medical implants to treat peripheral neuropathy.
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Affiliation(s)
- Dong-Min Lee
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, Republic of Korea
- Center for Human-oriented Triboelectric Energy Harvesting, Yonsei University, Seoul, 03722, Republic of Korea
| | - Minki Kang
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
| | - Inah Hyun
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, Republic of Korea
- Center for Human-oriented Triboelectric Energy Harvesting, Yonsei University, Seoul, 03722, Republic of Korea
| | - Byung-Joon Park
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, Republic of Korea
- Center for Human-oriented Triboelectric Energy Harvesting, Yonsei University, Seoul, 03722, Republic of Korea
| | - Hye Jin Kim
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, 06351, Republic of Korea
| | - Soo Hyun Nam
- Cell and Gene Therapy Institute (CGTI), Samsung Medical Center, Seoul, 06351, Republic of Korea
| | - Hong-Joon Yoon
- Department of Electronic Engineering, Gachon University, Seongnam, 13120, Republic of Korea
| | - Hanjun Ryu
- Department of Advanced Materials Engineering, Chung-Ang University, Anseong, 17546, Republic of Korea
| | - Hyun-Moon Park
- Research and Development Center, Energy-Mining Co., LTD., Suwon, 16226, Republic of Korea
| | - Byung-Ok Choi
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, 06351, Republic of Korea.
- Cell and Gene Therapy Institute (CGTI), Samsung Medical Center, Seoul, 06351, Republic of Korea.
- Samsung Advanced Institute for Health Sciences & Technology (SAIHST), Seoul, 06351, Republic of Korea.
| | - Sang-Woo Kim
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, Republic of Korea.
- Center for Human-oriented Triboelectric Energy Harvesting, Yonsei University, Seoul, 03722, Republic of Korea.
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12
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Jagielska A, Radzwill K, Espinosa-Hoyos D, Yang M, Kowsari K, Farley JE, Giera S, Byrne A, Sheng G, Fang NX, Dodge JC, Pedraza CE, Van Vliet KJ. Artificial axons as a biomimetic 3D myelination platform for the discovery and validation of promyelinating compounds. Sci Rep 2023; 13:19529. [PMID: 37945646 PMCID: PMC10636046 DOI: 10.1038/s41598-023-44675-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 10/11/2023] [Indexed: 11/12/2023] Open
Abstract
Multiple sclerosis (MS), a chronic neurodegenerative disease driven by damage to the protective myelin sheath, is currently incurable. Today, all clinically available treatments modulate the immune-mediated symptoms of the disease but they fail to stop neurodegeneration in many patients. Remyelination, the regenerative process of myelin repair by oligodendrocytes, which is considered a necessary step to protect demyelinated axons and stop neuronal death, is impaired in MS patients. One of the major obstacles to finding effective remyelinating drugs is the lack of biomimetic drug screening platforms that enable quantification of compounds' potential to stimulate 3D myelination in the physiologically relevant axon-like environment. To address this need, we built a unique myelination drug discovery platform, by expanding our previously developed technology, artificial axons (AAs), which enables 3D-printing of synthetic axon mimics with the geometry and mechanical properties closely resembling those of biological axons. This platform allows for high-throughput phenotypic myelination assay based on quantification of 3D wrapping of myelin membrane around axons in response to compounds. Here, we demonstrate quantification of 3D myelin wrapping by rat oligodendrocytes around the axon mimics in response to a small library of known pro-myelinating compounds. This assay shows pro-myelinating activity for all tested compounds consistent with the published in vitro and in vivo data, demonstrating predictive power of AA platform. We find that stimulation of myelin wrapping by these compounds is dose-dependent, providing a facile means to quantify the compounds' potency and efficacy in promoting myelin wrapping. Further, the ranking of relative efficacy among these compounds differs in this 3D axon-like environment as compared to a traditional oligodendrocyte 2D differentiation assay quantifying area of deposited myelin membrane. Together, we demonstrate that the artificial axons platform and associated phenotypic myelin wrapping assay afford direct evaluation of myelin wrapping by oligodendrocytes in response to soluble compounds in an axon-like environment, providing a predictive tool for the discovery of remyelinating therapies.
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Affiliation(s)
- Anna Jagielska
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
- Artificial Axon Labs, Boston, MA, USA.
| | | | - Daniela Espinosa-Hoyos
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
- Sanofi, Cambridge, MA, USA
| | - Mingyu Yang
- Harvard-MIT Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Kavin Kowsari
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
- Merck, Rahway, NJ, USA
| | - Jonathan E Farley
- Sanofi, Cambridge, MA, USA
- Alnylam Pharmaceuticals, Cambridge, MA, USA
| | | | | | | | - Nicholas X Fang
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
- The University of Hong Kong, Hong Kong, China
| | | | | | - Krystyn J Van Vliet
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
- Cornell University, Ithaca, NY, USA.
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13
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Štepánková K, Chudíčková M, Šimková Z, Martinez-Varea N, Kubinová Š, Urdzíková LM, Jendelová P, Kwok JCF. Low oral dose of 4-methylumbelliferone reduces glial scar but is insufficient to induce functional recovery after spinal cord injury. Sci Rep 2023; 13:19183. [PMID: 37932336 PMCID: PMC10628150 DOI: 10.1038/s41598-023-46539-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Accepted: 11/02/2023] [Indexed: 11/08/2023] Open
Abstract
Spinal cord injury (SCI) induces the upregulation of chondroitin sulfate proteoglycans (CSPGs) at the glial scar and inhibits neuroregeneration. Under normal physiological condition, CSPGs interact with hyaluronan (HA) and other extracellular matrix on the neuronal surface forming a macromolecular structure called perineuronal nets (PNNs) which regulate neuroplasticity. 4-methylumbelliferone (4-MU) is a known inhibitor for HA synthesis but has not been tested in SCI. We first tested the effect of 4-MU in HA reduction in uninjured rats. After 8 weeks of 4-MU administration at a dose of 1.2 g/kg/day, we have not only observed a reduction of HA in the uninjured spinal cords but also a down-regulation of CS glycosaminoglycans (CS-GAGs). In order to assess the effect of 4-MU in chronic SCI, six weeks after Th8 spinal contusion injury, rats were fed with 4-MU or placebo for 8 weeks in combination with daily treadmill rehabilitation for 16 weeks to promote neuroplasticity. 4-MU treatment reduced the HA synthesis by astrocytes around the lesion site and increased sprouting of 5-hydroxytryptamine fibres into ventral horns. However, the current dose was not sufficient to suppress CS-GAG up-regulation induced by SCI. Further adjustment on the dosage will be required to benefit functional recovery after SCI.
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Affiliation(s)
- Kateřina Štepánková
- Institute of Experimental Medicine, Czech Academy of Sciences, Vídeňská, 1083, Prague, Czech Republic.
- Department of Neuroscience, Charles University, Second Faculty of Medicine, 15006, Prague, Czech Republic.
| | - Milada Chudíčková
- Institute of Experimental Medicine, Czech Academy of Sciences, Vídeňská, 1083, Prague, Czech Republic
| | - Zuzana Šimková
- Institute of Experimental Medicine, Czech Academy of Sciences, Vídeňská, 1083, Prague, Czech Republic
| | - Noelia Martinez-Varea
- Institute of Experimental Medicine, Czech Academy of Sciences, Vídeňská, 1083, Prague, Czech Republic
- Department of Neuroscience, Charles University, Second Faculty of Medicine, 15006, Prague, Czech Republic
| | - Šárka Kubinová
- Institute of Experimental Medicine, Czech Academy of Sciences, Vídeňská, 1083, Prague, Czech Republic
- Institute of Physics, Czech Academy of Sciences, 182 21, Prague, Czech Republic
| | - Lucia Machová Urdzíková
- Institute of Experimental Medicine, Czech Academy of Sciences, Vídeňská, 1083, Prague, Czech Republic.
- Department of Neuroscience, Charles University, Second Faculty of Medicine, 15006, Prague, Czech Republic.
| | - Pavla Jendelová
- Institute of Experimental Medicine, Czech Academy of Sciences, Vídeňská, 1083, Prague, Czech Republic.
- Department of Neuroscience, Charles University, Second Faculty of Medicine, 15006, Prague, Czech Republic.
| | - Jessica C F Kwok
- Institute of Experimental Medicine, Czech Academy of Sciences, Vídeňská, 1083, Prague, Czech Republic.
- Faculty of Biological Sciences, University of Leeds, Leeds, LS2 9JT, UK.
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14
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Tai Y, Tonmoy TI, Win S, Brinkley NT, Park BH, Nam J. Enhanced peripheral nerve regeneration by mechano-electrical stimulation. NPJ Regen Med 2023; 8:57. [PMID: 37848428 PMCID: PMC10582163 DOI: 10.1038/s41536-023-00334-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 09/29/2023] [Indexed: 10/19/2023] Open
Abstract
To address limitations in current approaches for treating large peripheral nerve defects, the presented study evaluated the feasibility of functional material-mediated physical stimuli on peripheral nerve regeneration. Electrospun piezoelectric poly(vinylidene fluoride-trifluoroethylene) nanofibers were utilized to deliver mechanical actuation-activated electrical stimulation to nerve cells/tissues in a non-invasive manner. Using morphologically and piezoelectrically optimized nanofibers for neurite extension and Schwann cell maturation based on in vitro experiments, piezoelectric nerve conduits were synthesized and implanted in a rat sciatic nerve transection model to bridge a critical-sized sciatic nerve defect (15 mm). A therapeutic shockwave system was utilized to periodically activate the piezoelectric effect of the implanted nerve conduit on demand. The piezoelectric nerve conduit-mediated mechano-electrical stimulation (MES) induced enhanced peripheral nerve regeneration, resulting in full axon reconnection with myelin regeneration from the proximal to the distal ends over the critical-sized nerve gap. In comparison, a control group, in which the implanted piezoelectric conduits were not activated in vivo, failed to exhibit such nerve regeneration. In addition, at both proximal and distal ends of the implanted conduits, a decreased number of damaged myelination (ovoids), an increased number of myelinated nerves, and a larger axonal diameter were observed under the MES condition as compared to the control condition. Furthermore, unlike the control group, the MES condition exhibited a superior functional nerve recovery, assessed by walking track analysis and polarization-sensitive optical coherence tomography, demonstrating the significant potential of the piezoelectric conduit-based physical stimulation approach for the treatment of peripheral nerve injury.
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Affiliation(s)
- Youyi Tai
- Department of Bioengineering, University of California, Riverside, CA, 92521, USA
| | | | - Shwe Win
- Department of Bioengineering, University of California, Riverside, CA, 92521, USA
| | - Natasha T Brinkley
- Department of Bioengineering, University of California, Riverside, CA, 92521, USA
| | - B Hyle Park
- Department of Bioengineering, University of California, Riverside, CA, 92521, USA
| | - Jin Nam
- Department of Bioengineering, University of California, Riverside, CA, 92521, USA.
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15
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Trombley S, Powell J, Guttipatti P, Matamoros A, Lin X, O'Harrow T, Steinschaden T, Miles L, Wang Q, Wang S, Qiu J, Li Q, Li F, Song Y. Glia instruct axon regeneration via a ternary modulation of neuronal calcium channels in Drosophila. Nat Commun 2023; 14:6490. [PMID: 37838791 PMCID: PMC10576831 DOI: 10.1038/s41467-023-42306-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 10/04/2023] [Indexed: 10/16/2023] Open
Abstract
A neuron's regenerative capacity is governed by its intrinsic and extrinsic environment. Both peripheral and central neurons exhibit cell-type-dependent axon regeneration, but the underlying mechanism is unclear. Glia provide a milieu essential for regeneration. However, the routes of glia-neuron signaling remain underexplored. Here, we show that regeneration specificity is determined by the axotomy-induced Ca2+ transients only in the fly regenerative neurons, which is mediated by L-type calcium channels, constituting the core intrinsic machinery. Peripheral glia regulate axon regeneration via a three-layered and balanced modulation. Glia-derived tumor necrosis factor acts through its neuronal receptor to maintain calcium channel expression after injury. Glia sustain calcium channel opening by enhancing membrane hyperpolarization via the inwardly-rectifying potassium channel (Irk1). Glia also release adenosine which signals through neuronal adenosine receptor (AdoR) to activate HCN channels (Ih) and dampen Ca2+ transients. Together, we identify a multifaceted glia-neuron coupling which can be hijacked to promote neural repair.
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Affiliation(s)
- Shannon Trombley
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | - Jackson Powell
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | - Pavithran Guttipatti
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | - Andrew Matamoros
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Xiaohui Lin
- Department of Neurosurgery, Zhongshan Hospital, State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, Institute for Translational Brain Research, Fudan University, 200032, Shanghai, China
| | - Tristan O'Harrow
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | - Tobias Steinschaden
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | - Leann Miles
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | - Qin Wang
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Shuchao Wang
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | - Jingyun Qiu
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | - Qingyang Li
- Department of Neurosurgery, Zhongshan Hospital, State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, Institute for Translational Brain Research, Fudan University, 200032, Shanghai, China
| | - Feng Li
- Department of Neurosurgery, Zhongshan Hospital, State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, Institute for Translational Brain Research, Fudan University, 200032, Shanghai, China.
| | - Yuanquan Song
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA.
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA.
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16
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Capuz A, Osien S, Cardon T, Karnoub MA, Aboulouard S, Raffo-Romero A, Duhamel M, Cizkova D, Trerotola M, Devos D, Kobeissy F, F VA, Bonnefond A, Fournier I, Rodet F, Salzet M. Correction: Heimdall, an alternative protein issued from a ncRNA related to kappa light chain variable region of immunoglobulins from astrocytes: a new player in neural proteome. Cell Death Dis 2023; 14:677. [PMID: 37833264 PMCID: PMC10576076 DOI: 10.1038/s41419-023-06143-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2023]
Affiliation(s)
- Alice Capuz
- Univ. Lille, Inserm, U-1192 - Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse-PRISM, F-59000, Lille, France
| | - Sylvain Osien
- Univ. Lille, Inserm, U-1192 - Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse-PRISM, F-59000, Lille, France
| | - Tristan Cardon
- Univ. Lille, Inserm, U-1192 - Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse-PRISM, F-59000, Lille, France
| | - Mélodie Anne Karnoub
- Univ. Lille, Inserm, U-1192 - Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse-PRISM, F-59000, Lille, France
| | - Soulaimane Aboulouard
- Univ. Lille, Inserm, U-1192 - Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse-PRISM, F-59000, Lille, France
| | - Antonella Raffo-Romero
- Univ. Lille, Inserm, U-1192 - Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse-PRISM, F-59000, Lille, France
| | - Marie Duhamel
- Univ. Lille, Inserm, U-1192 - Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse-PRISM, F-59000, Lille, France
| | - Dasa Cizkova
- Univ. Lille, Inserm, U-1192 - Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse-PRISM, F-59000, Lille, France
- Institute of Neuroimmunology, Slovak Academy of Sciences, Dúbravská cesta 9, 845 10, Bratislava, Slovakia
- Centre for Experimental and Clinical Regenerative Medicine, University of Veterinary Medicine and Pharmacy in Kosice, Kosice, Slovakia
| | - Marco Trerotola
- Laboratory of Cancer Pathology, Center for Advanced Studies and Technology (CAST), University 'G. d'Annunzio', Chieti, Italy
- Department of Medical, Oral and Biotechnological Sciences, University 'G. d'Annunzio', Chieti, Italy
| | - David Devos
- Université de Lille, INSERM, U1172, CHU-Lille, Lille Neuroscience Cognition Research Centre, 1 place de Verdun, 59000, Lille, France
| | - Firas Kobeissy
- Department of Biochemistry and Molecular Genetics, Faculty of Medicine, American University of Beirut, Beirut, Lebanon
| | - Vanden Abeele F
- Université de Lille, INSERM U1003, Laboratory of Cell Physiology, 59650, Villeneuve d'Ascq, France
| | - Amélie Bonnefond
- Univ. Lille, Inserm UMR1283, CNRS UMR8199, European Genomic Institute for Diabetes (EGID), Institut Pasteur de Lille, CHU de Lille, 1 place de Verdun, 59000, Lille, France
| | - Isabelle Fournier
- Univ. Lille, Inserm, U-1192 - Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse-PRISM, F-59000, Lille, France
- Institut Universitaire de France, 75005, Paris, France
| | - Franck Rodet
- Univ. Lille, Inserm, U-1192 - Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse-PRISM, F-59000, Lille, France.
| | - Michel Salzet
- Univ. Lille, Inserm, U-1192 - Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse-PRISM, F-59000, Lille, France.
- Institut Universitaire de France, 75005, Paris, France.
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17
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Bedi SS, Scott MC, Skibber MA, Kumar A, Caplan HW, Xue H, Sequeira D, Speer AL, Cardenas F, Gudenkauf F, Uray K, Srivastava AK, Prossin AR, Cox CS. PET imaging of microglia using PBR28suv determines therapeutic efficacy of autologous bone marrow mononuclear cells therapy in traumatic brain injury. Sci Rep 2023; 13:16142. [PMID: 37752232 PMCID: PMC10522669 DOI: 10.1038/s41598-023-43245-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 09/21/2023] [Indexed: 09/28/2023] Open
Abstract
Traumatic brain injury (TBI) results in activated microglia. Activated microglia can be measured in vivo by using positron emission topography (PET) ligand peripheral benzodiazepine receptor standardized uptake values (PBR28suv). Cell based therapies have utilized autologous bone marrow mononuclear cells (BMMNCs) to attenuate activated microglia after TBI. This study aims to utilize in vivo PBR28suv to assess the efficacy of BMMNCs therapy after TBI. Seventy-two hours after CCI injury, BMMNCs were harvested from the tibia and injected via tail-vein at 74 h after injury at a concentration of 2 million cells per kilogram of body weight. There were three groups of rats: Sham, CCI-alone and CCI-BMMNCs (AUTO). One hundred twenty days after injury, rodents were imaged with PBR28 and their cognitive behavior assessed utilizing the Morris Water Maze. Subsequent ex vivo analysis included brain volume and immunohistochemistry. BMMNCs therapy attenuated PBR28suv in comparison to CCI alone and it improved spatial learning as measured by the Morris Water Maze. Ex vivo analysis demonstrated preservation of brain volume, a decrease in amoeboid-shaped microglia in the dentate gyrus and an increase in the ratio of ramified to amoeboid microglia in the thalamus. PBR28suv is a viable option to measure efficacy of BMMNCs therapy after TBI.
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Affiliation(s)
- Supinder S Bedi
- Department of Pediatric Surgery, University of Texas Medical School at Houston, 6431 Fannin Street, MSB 5.230, Houston, TX, 77030, USA.
| | - Michael C Scott
- Department of Pediatric Surgery, University of Texas Medical School at Houston, 6431 Fannin Street, MSB 5.230, Houston, TX, 77030, USA
| | - Max A Skibber
- Department of Pediatric Surgery, University of Texas Medical School at Houston, 6431 Fannin Street, MSB 5.230, Houston, TX, 77030, USA
| | - Akshita Kumar
- Department of Pediatric Surgery, University of Texas Medical School at Houston, 6431 Fannin Street, MSB 5.230, Houston, TX, 77030, USA
| | - Henry W Caplan
- Department of Pediatric Surgery, University of Texas Medical School at Houston, 6431 Fannin Street, MSB 5.230, Houston, TX, 77030, USA
| | - Hasen Xue
- Department of Pediatric Surgery, University of Texas Medical School at Houston, 6431 Fannin Street, MSB 5.230, Houston, TX, 77030, USA
| | - David Sequeira
- Department of Pediatric Surgery, University of Texas Medical School at Houston, 6431 Fannin Street, MSB 5.230, Houston, TX, 77030, USA
| | - Alison L Speer
- Department of Pediatric Surgery, University of Texas Medical School at Houston, 6431 Fannin Street, MSB 5.230, Houston, TX, 77030, USA
| | - Fanni Cardenas
- Department of Pediatric Surgery, University of Texas Medical School at Houston, 6431 Fannin Street, MSB 5.230, Houston, TX, 77030, USA
| | - Franciska Gudenkauf
- Department of Pediatric Surgery, University of Texas Medical School at Houston, 6431 Fannin Street, MSB 5.230, Houston, TX, 77030, USA
| | - Karen Uray
- Department of Pediatric Surgery, University of Texas Medical School at Houston, 6431 Fannin Street, MSB 5.230, Houston, TX, 77030, USA
| | - Amit K Srivastava
- Division of Hematology, Department of Medicine, Cardeza Foundation for Hematologic Research, Sydney Kimmel Medical College, Thomas Jefferson University, Philadelphia, USA
| | - Alan R Prossin
- Department of Psychiatry and Behavioral Sciences, University of Texas Medical School at Houston, Houston, TX, USA
| | - Charles S Cox
- Department of Pediatric Surgery, University of Texas Medical School at Houston, 6431 Fannin Street, MSB 5.230, Houston, TX, 77030, USA
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18
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Murphy RNA, Rogers SK, Bhatti W, Wong JK, Reid AJ. A pilot prospective cohort study using experimental quantification of early peripheral nerve regeneration with high-frequency three-dimensional tomographic ultrasound (HFtUS). Sci Rep 2023; 13:15175. [PMID: 37704699 PMCID: PMC10499886 DOI: 10.1038/s41598-023-42230-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 09/07/2023] [Indexed: 09/15/2023] Open
Abstract
Quantification of peripheral nerve regeneration after injury relies upon subjective outcome measures or electrophysiology assessments requiring fully regenerated neurons. Nerve surgeons and researchers lack objective, quantifiable information on the site of surgical repair and regenerative front. To address this need, we developed a quantifiable, visual, clinically available measure of early peripheral nerve regeneration using high-frequency, three-dimensional, tomographic ultrasound (HFtUS). We conducted a prospective, longitudinal study of adult patients with ulnar and/or median nerve injury of the arm undergoing direct epineurial repair within 5 days of injury. Assessment of morphology, volumetric and 3D grey-scale quantification of cross-sectional views were made at baseline up to 15 months post-surgery. Sensory and motor clinical outcome measures and patient reported outcome measures (PROMs) were recorded. Five participants were recruited to the study. Our data demonstrated grey-scale values (an indication of axonal density) increased in distal stumps within 2-4 months after repair, returning to normal as regeneration completed (4-6 months) with concomitant reduction in intraneural volume as surgical oedema resolved. Two patients with abnormal regeneration were characterized by increased intraneural volume and minimal grey-scale change. HFtUS may quantify early peripheral nerve regeneration offering a window of opportunity for surgical intervention where early abnormal regeneration is detected.
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Affiliation(s)
- Ralph N A Murphy
- Blond McIndoe Laboratories, Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, M13 9PT, UK.
- Department of Plastic Surgery and Burns, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, Wythenshawe Hospital, Manchester, M23 9LT, UK.
| | - Steven K Rogers
- Division of Cardiovascular Sciences, Faculty of Biology, Medicine and Health, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, School of Medical Sciences, University of Manchester, Oxford Road, Manchester, M13 9WL, UK
- Manchester Academic Vascular Research and Innovation Centre (MAVRIC), Manchester University NHS Foundation Trust, Wythenshawe Hospital, Manchester, M23 9LT, UK
| | - Waqar Bhatti
- Department of Musculoskeletal Radiology, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, Wythenshawe Hospital, Manchester, M23 9LT, UK
| | - Jason K Wong
- Blond McIndoe Laboratories, Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, M13 9PT, UK
- Department of Plastic Surgery and Burns, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, Wythenshawe Hospital, Manchester, M23 9LT, UK
| | - Adam J Reid
- Blond McIndoe Laboratories, Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, M13 9PT, UK
- Department of Plastic Surgery and Burns, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, Wythenshawe Hospital, Manchester, M23 9LT, UK
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19
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Halawani D, Wang Y, Ramakrishnan A, Estill M, He X, Shen L, Friedel RH, Zou H. Circadian clock regulator Bmal1 gates axon regeneration via Tet3 epigenetics in mouse sensory neurons. Nat Commun 2023; 14:5165. [PMID: 37620297 PMCID: PMC10449865 DOI: 10.1038/s41467-023-40816-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 08/11/2023] [Indexed: 08/26/2023] Open
Abstract
Axon regeneration of dorsal root ganglia (DRG) neurons after peripheral axotomy involves reconfiguration of gene regulatory circuits to establish regenerative gene programs. However, the underlying mechanisms remain unclear. Here, through an unbiased survey, we show that the binding motif of Bmal1, a central transcription factor of the circadian clock, is enriched in differentially hydroxymethylated regions (DhMRs) of mouse DRG after peripheral lesion. By applying conditional deletion of Bmal1 in neurons, in vitro and in vivo neurite outgrowth assays, as well as transcriptomic profiling, we demonstrate that Bmal1 inhibits axon regeneration, in part through a functional link with the epigenetic factor Tet3. Mechanistically, we reveal that Bmal1 acts as a gatekeeper of neuroepigenetic responses to axonal injury by limiting Tet3 expression and restricting 5hmC modifications. Bmal1-regulated genes not only concern axon growth, but also stress responses and energy homeostasis. Furthermore, we uncover an epigenetic rhythm of diurnal oscillation of Tet3 and 5hmC levels in DRG neurons, corresponding to time-of-day effect on axon growth potential. Collectively, our studies demonstrate that targeting Bmal1 enhances axon regeneration.
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Affiliation(s)
- Dalia Halawani
- Nash Family Department of Neuroscience, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Yiqun Wang
- Nash Family Department of Neuroscience, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Orthopedics, Second Affiliated Hospital of Xi'an Jiaotong University, Shaanxi, China
| | - Aarthi Ramakrishnan
- Nash Family Department of Neuroscience, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Molly Estill
- Nash Family Department of Neuroscience, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Xijing He
- Department of Orthopedics, Second Affiliated Hospital of Xi'an Jiaotong University, Shaanxi, China
- Department of Orthopedics, Xi'an International Medical Center Hospital, Xi'an, China
| | - Li Shen
- Nash Family Department of Neuroscience, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Roland H Friedel
- Nash Family Department of Neuroscience, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Hongyan Zou
- Nash Family Department of Neuroscience, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
- Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
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20
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Capuz A, Osien S, Cardon T, Karnoub MA, Aboulouard S, Raffo-Romero A, Duhamel M, Cizkova D, Trerotola M, Devos D, Kobeissy F, Vanden Abeele F, Bonnefond A, Fournier I, Rodet F, Salzet M. Heimdall, an alternative protein issued from a ncRNA related to kappa light chain variable region of immunoglobulins from astrocytes: a new player in neural proteome. Cell Death Dis 2023; 14:526. [PMID: 37587118 PMCID: PMC10432539 DOI: 10.1038/s41419-023-06037-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 07/27/2023] [Accepted: 08/02/2023] [Indexed: 08/18/2023]
Abstract
The dogma "One gene, one protein" is clearly obsolete since cells use alternative splicing and generate multiple transcripts which are translated into protein isoforms, but also use alternative translation initiation sites (TISs) and termination sites on a given transcript. Alternative open reading frames for individual transcripts give proteins originate from the 5'- and 3'-UTR mRNA regions, frameshifts of mRNA ORFs or from non-coding RNAs. Longtime considered as non-coding, recent in-silico translation prediction methods enriched the protein databases allowing the identification of new target structures that have not been identified previously. To gain insight into the role of these newly identified alternative proteins in the regulation of cellular functions, it is crucial to assess their dynamic modulation within a framework of altered physiological modifications such as experimental spinal cord injury (SCI). Here, we carried out a longitudinal proteomic study on rat SCI from 12 h to 10 days. Based on the alternative protein predictions, it was possible to identify a plethora of newly predicted protein hits. Among these proteins, some presented a special interest due to high homology with variable chain regions of immunoglobulins. We focus our interest on the one related to Kappa variable light chains which is similarly highly produced by B cells in the Bence jones disease, but here expressed in astrocytes. This protein, name Heimdall is an Intrinsically disordered protein which is secreted under inflammatory conditions. Immunoprecipitation experiments showed that the Heimdall interactome contained proteins related to astrocyte fate keepers such as "NOTCH1, EPHA3, IPO13" as well as membrane receptor protein including "CHRNA9; TGFBR, EPHB6, and TRAM". However, when Heimdall protein was neutralized utilizing a specific antibody or its gene knocked out by CRISPR-Cas9, sprouting elongations were observed in the corresponding astrocytes. Interestingly, depolarization assays and intracellular calcium measurements in Heimdall KO, established a depolarization effect on astrocyte membranes KO cells were more likely that the one found in neuroprogenitors. Proteomic analyses performed under injury conditions or under lipopolysaccharides (LPS) stimulation, revealed the expression of neuronal factors, stem cell proteins, proliferation, and neurogenesis of astrocyte convertor factors such as EPHA4, NOTCH2, SLIT3, SEMA3F, suggesting a role of Heimdall could regulate astrocytic fate. Taken together, Heimdall could be a novel member of the gatekeeping astrocyte-to-neuroprogenitor conversion factors.
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Affiliation(s)
- Alice Capuz
- Univ. Lille, Inserm, U-1192 - Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse-PRISM, F-59000, Lille, France
| | - Sylvain Osien
- Univ. Lille, Inserm, U-1192 - Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse-PRISM, F-59000, Lille, France
| | - Tristan Cardon
- Univ. Lille, Inserm, U-1192 - Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse-PRISM, F-59000, Lille, France
| | - Mélodie Anne Karnoub
- Univ. Lille, Inserm, U-1192 - Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse-PRISM, F-59000, Lille, France
| | - Soulaimane Aboulouard
- Univ. Lille, Inserm, U-1192 - Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse-PRISM, F-59000, Lille, France
| | - Antonella Raffo-Romero
- Univ. Lille, Inserm, U-1192 - Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse-PRISM, F-59000, Lille, France
| | - Marie Duhamel
- Univ. Lille, Inserm, U-1192 - Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse-PRISM, F-59000, Lille, France
| | - Dasa Cizkova
- Univ. Lille, Inserm, U-1192 - Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse-PRISM, F-59000, Lille, France
- Institute of Neuroimmunology, Slovak Academy of Sciences, Dúbravská cesta 9, 845 10, Bratislava, Slovakia
- Centre for Experimental and Clinical Regenerative Medicine, University of Veterinary Medicine and Pharmacy in Kosice, Kosice, Slovakia
| | - Marco Trerotola
- Laboratory of Cancer Pathology, Center for Advanced Studies and Technology (CAST), University 'G. d'Annunzio', Chieti, Italy
- Department of Medical, Oral and Biotechnological Sciences, University 'G. d'Annunzio', Chieti, Italy
| | - David Devos
- Université de Lille, INSERM, U1172, CHU-Lille, Lille Neuroscience Cognition Research Centre, 1 place de Verdun, 59000, Lille, France
| | - Firas Kobeissy
- Department of Biochemistry and Molecular Genetics, Faculty of Medicine, American University of Beirut, Beirut, Lebanon
| | - Fabien Vanden Abeele
- Université de Lille, INSERM U1003, Laboratory of Cell Physiology, 59650, Villeneuve d'Ascq, France
| | - Amélie Bonnefond
- Univ. Lille, Inserm UMR1283, CNRS UMR8199, European Genomic Institute for Diabetes (EGID), Institut Pasteur de Lille, CHU de Lille, 1 place de Verdun, 59000, Lille, France
| | - Isabelle Fournier
- Univ. Lille, Inserm, U-1192 - Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse-PRISM, F-59000, Lille, France
- Institut Universitaire de France, 75005, Paris, France
| | - Franck Rodet
- Univ. Lille, Inserm, U-1192 - Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse-PRISM, F-59000, Lille, France.
| | - Michel Salzet
- Univ. Lille, Inserm, U-1192 - Laboratoire Protéomique, Réponse Inflammatoire et Spectrométrie de Masse-PRISM, F-59000, Lille, France.
- Institut Universitaire de France, 75005, Paris, France.
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21
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Zhang X, Gao R, Zhang C, Teng Y, Chen H, Li Q, Liu C, Wu J, Wei L, Deng L, Wu L, Ye-Lehmann S, Mao X, Liu J, Zhu T, Chen C. Extracellular RNAs-TLR3 signaling contributes to cognitive impairment after chronic neuropathic pain in mice. Signal Transduct Target Ther 2023; 8:292. [PMID: 37544956 PMCID: PMC10404588 DOI: 10.1038/s41392-023-01543-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 06/01/2023] [Accepted: 06/12/2023] [Indexed: 08/08/2023] Open
Abstract
Chronic pain is often associated with cognitive decline, which could influence the quality of the patient's life. Recent studies have suggested that Toll-like receptor 3 (TLR3) is crucial for memory and learning. Nonetheless, the contribution of TLR3 to the pathogenesis of cognitive decline after chronic pain remains unclear. The level of TLR3 in hippocampal neurons increased in the chronic constriction injury (CCI) group than in the sham group in this study. Importantly, compared to the wild-type (WT) mice, TLR3 knockout (KO) mice and TLR3-specific neuronal knockdown mice both displayed improved cognitive function, reduced levels of inflammatory cytokines and neuronal apoptosis and attenuated injury to hippocampal neuroplasticity. Notably, extracellular RNAs (exRNAs), specifically double-stranded RNAs (dsRNAs), were increased in the sciatic nerve, serum, and hippocampus after CCI. The co-localization of dsRNA with TLR3 was also increased in hippocampal neurons. And the administration of poly (I:C), a dsRNA analog, elevated the levels of dsRNAs and TLR3 in the hippocampus, exacerbating hippocampus-dependent memory. In additon, the dsRNA/TLR3 inhibitor improved cognitive function after CCI. Together, our findings suggested that exRNAs, particularly dsRNAs, that were present in the condition of chronic neuropathic pain, activated TLR3, initiated downstream inflammatory and apoptotic signaling, caused damage to synaptic plasticity, and contributed to the etiology of cognitive impairment after chronic neuropathic pain.
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Affiliation(s)
- Xueying Zhang
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
- The Research Units of West China (2018RU012)-Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu, China
| | - Rui Gao
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
- The Research Units of West China (2018RU012)-Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu, China
| | - Changteng Zhang
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
- The Research Units of West China (2018RU012)-Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu, China
| | - Yi Teng
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
- The Research Units of West China (2018RU012)-Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu, China
| | - Hai Chen
- Department of Respiratory and Critical Care Medicine, Targeted Tracer Research and Development Laboratory, West China Hospital, Sichuan University, Chengdu, China
| | - Qi Li
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
- The Research Units of West China (2018RU012)-Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu, China
| | - Changliang Liu
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
- The Research Units of West China (2018RU012)-Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu, China
| | - Jiahui Wu
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
- The Research Units of West China (2018RU012)-Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu, China
| | - Liuxing Wei
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
- The Research Units of West China (2018RU012)-Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu, China
| | - Liyun Deng
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
- The Research Units of West China (2018RU012)-Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu, China
| | - Lining Wu
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
- The Research Units of West China (2018RU012)-Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu, China
| | - Shixin Ye-Lehmann
- Diseases and Hormones of the Nervous System, University of Paris-Scalay Bicêtre Hosptial, Le Kremlin-Bicêtre, France
| | - Xiaobo Mao
- Department of Neurology, Institute of Cell Engineering, School of Medicine, Johns Hopkins University, Baltimore, USA
| | - Jin Liu
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
- The Research Units of West China (2018RU012)-Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu, China
| | - Tao Zhu
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China.
- The Research Units of West China (2018RU012)-Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu, China.
| | - Chan Chen
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China.
- The Research Units of West China (2018RU012)-Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu, China.
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22
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Melin E, Andersson M, Gøtzsche CR, Wickham J, Huang Y, Szczygiel JA, Boender A, Christiansen SH, Pinborg L, Woldbye DPD, Kokaia M. Combinatorial gene therapy for epilepsy: Gene sequence positioning and AAV serotype influence expression and inhibitory effect on seizures. Gene Ther 2023; 30:649-658. [PMID: 37029201 PMCID: PMC10457185 DOI: 10.1038/s41434-023-00399-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 02/24/2023] [Accepted: 03/16/2023] [Indexed: 04/09/2023]
Abstract
Gene therapy with AAV vectors carrying genes for neuropeptide Y and its receptor Y2 has been shown to inhibit seizures in multiple animal models of epilepsy. It is however unknown how the AAV serotype or the sequence order of these two transgenes in the expression cassette affects the actual parenchymal gene expression levels and the seizure-suppressant efficacy. To address these questions, we compared three viral vector serotypes (AAV1, AAV2 and AAV8) and two transgene sequence orders (NPY-IRES-Y2 and Y2-IRES-NPY) in a rat model of acutely induced seizures. Wistar male rats were injected bilaterally with viral vectors and 3 weeks later acute seizures were induced by a subcutaneous injection of kainate. The latency until 1st motor seizure, time spent in motor seizure and latency to status epilepticus were measured to evaluate the seizure-suppressing efficacy of these vectors compared to an empty cassette control vector. Based on the results, the effect of the AAV1-NPY-IRES-Y2 vector was further investigated by in vitro electrophysiology, and its ability to achieve transgene overexpression in resected human hippocampal tissue was evaluated. The AAV1-NPY-IRES-Y2 proved to be better to any other serotype or gene sequence considering both transgene expression and ability to suppress induced seizures in rats. The vector also demonstrated transgene-induced decrease of glutamate release from excitatory neuron terminals and significantly increased both NPY and Y2 expression in resected human hippocampal tissue from patients with drug-resistant temporal lobe epilepsy. These results validate the feasibility of NPY/Y2 receptor gene therapy as a therapeutic opportunity in focal epilepsies.
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Affiliation(s)
- Esbjörn Melin
- Experimental Epilepsy Group, Epilepsy Centre, Lund University Hospital, 17 Sölvegatan, 221 84, Lund, Sweden.
| | - My Andersson
- Experimental Epilepsy Group, Epilepsy Centre, Lund University Hospital, 17 Sölvegatan, 221 84, Lund, Sweden
| | - Casper R Gøtzsche
- CombiGene AB, Medicon Village, 2 Scheelevägen, 223 81, Lund, Sweden
- Department of Neuroscience, Panum Institute, University of Copenhagen, 3B Blegdamsvej, DK-2200, Copenhagen N, Denmark
| | - Jenny Wickham
- Experimental Epilepsy Group, Epilepsy Centre, Lund University Hospital, 17 Sölvegatan, 221 84, Lund, Sweden
| | - Yuzhe Huang
- Department of Neuroscience, Panum Institute, University of Copenhagen, 3B Blegdamsvej, DK-2200, Copenhagen N, Denmark
| | - Julia Alicja Szczygiel
- Department of Neuroscience, Panum Institute, University of Copenhagen, 3B Blegdamsvej, DK-2200, Copenhagen N, Denmark
| | - Arnie Boender
- Experimental Epilepsy Group, Epilepsy Centre, Lund University Hospital, 17 Sölvegatan, 221 84, Lund, Sweden
| | - Søren H Christiansen
- Department of Neuroscience, Panum Institute, University of Copenhagen, 3B Blegdamsvej, DK-2200, Copenhagen N, Denmark
| | - Lars Pinborg
- Department of Neurology and Neurobiology Research Unit, Copenhagen University Hospital, Rigshospitalet, 9 Blegdamsvej, DK-2100, Copenhagen, Denmark
| | - David P D Woldbye
- Department of Neuroscience, Panum Institute, University of Copenhagen, 3B Blegdamsvej, DK-2200, Copenhagen N, Denmark
| | - Merab Kokaia
- Experimental Epilepsy Group, Epilepsy Centre, Lund University Hospital, 17 Sölvegatan, 221 84, Lund, Sweden
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23
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Liu X, Hao F, Hao P, Zhang J, Wang L, You SW, Wang N, Yang Z, So KF, Li X. Regeneration and functional recovery of the completely transected optic nerve in adult rats by CNTF-chitosan. Signal Transduct Target Ther 2023; 8:81. [PMID: 36843119 PMCID: PMC9968709 DOI: 10.1038/s41392-022-01289-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Revised: 12/02/2022] [Accepted: 12/04/2022] [Indexed: 02/28/2023] Open
Affiliation(s)
- Xiao Liu
- Department of Neurobiology, School of Basic Medical Sciences, Capital Medical University, 100069, Beijing, China
| | - Fei Hao
- School of Engineering Medicine, Beijing Key Laboratory for Biomaterials and Neural Regeneration, Beihang University, 100083, Beijing, China
| | - Peng Hao
- Department of Neurobiology, School of Basic Medical Sciences, Capital Medical University, 100069, Beijing, China
| | - Jingxue Zhang
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology and Visual Sciences Key Laboratory, 100005, Beijing, China
| | - Liqiang Wang
- Department of Ophthalmology, The Third Medical Center, Chinese PLA General Hospital, 100089, Beijing, China
| | - Si-Wei You
- Department of Ophthalmology, Xijing Hospital, The Fourth Military Medical University, 710032, Xi'an, Shanxi Province, China
| | - Ningli Wang
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology and Visual Sciences Key Laboratory, 100005, Beijing, China
| | - Zhaoyang Yang
- Department of Neurobiology, School of Basic Medical Sciences, Capital Medical University, 100069, Beijing, China.
| | - Kwok-Fai So
- Guangdong-Hongkong-Macau Institute of CNS Regeneration, Ministry of Education CNS Regeneration Collaborative Joint Laboratory, Jinan University, 510632, Guangzhou, Guangdong Province, China. .,Bioland Laboratory (Guangzhou Regenerative Medicine and Health Guangdong Laboratory), 510530, Guangzhou, Guangdong Province, China. .,Department of Ophthalmology and State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, 999077, Hong Kong, China. .,Center for Brain Science and Brain-Inspired Intelligence, Guangdong-Hong Kong-Macao Greater Bay Area, 510515, Guangzhou, Guangdong Province, China. .,Co-innovation Center of Neuroregeneration, Nantong University, 226001, Nantong, Jiangsu Province, China.
| | - Xiaoguang Li
- Department of Neurobiology, School of Basic Medical Sciences, Capital Medical University, 100069, Beijing, China. .,School of Engineering Medicine, Beijing Key Laboratory for Biomaterials and Neural Regeneration, Beihang University, 100083, Beijing, China. .,Beijing International Cooperation Bases for Science and Technology on Biomaterials and Neural Regeneration, Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, Beihang University, 100083, Beijing, China.
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24
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Lu F, Leach LL, Gross JM. A CRISPR-Cas9-mediated F0 screen to identify pro-regenerative genes in the zebrafish retinal pigment epithelium. Sci Rep 2023; 13:3142. [PMID: 36823429 PMCID: PMC9950062 DOI: 10.1038/s41598-023-29046-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 01/30/2023] [Indexed: 02/25/2023] Open
Abstract
Ocular diseases resulting in death of the retinal pigment epithelium (RPE) lead to vision loss and blindness. There are currently no FDA-approved strategies to restore damaged RPE cells. Stimulating intrinsic regenerative responses within damaged tissues has gained traction as a possible mechanism for tissue repair. Zebrafish possess remarkable regenerative abilities, including within the RPE; however, our understanding of the underlying mechanisms remains limited. Here, we conducted an F0 in vivo CRISPR-Cas9-mediated screen of 27 candidate RPE regeneration genes. The screen involved injection of a ribonucleoprotein complex containing three highly mutagenic guide RNAs per target gene followed by PCR-based genotyping to identify large intragenic deletions and MATLAB-based automated quantification of RPE regeneration. Through this F0 screening pipeline, eight positive and seven negative regulators of RPE regeneration were identified. Further characterization of one candidate, cldn7b, revealed novel roles in regulating macrophage/microglia infiltration after RPE injury and in clearing RPE/pigment debris during late-phase RPE regeneration. Taken together, these data support the utility of targeted F0 screens for validating pro-regenerative factors and reveal novel factors that could regulate regenerative responses within the zebrafish RPE.
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Affiliation(s)
- Fangfang Lu
- grid.21925.3d0000 0004 1936 9000Department of Ophthalmology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213 USA ,grid.452708.c0000 0004 1803 0208Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha, 410011 Hunan China
| | - Lyndsay L. Leach
- grid.21925.3d0000 0004 1936 9000Department of Ophthalmology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213 USA ,grid.89336.370000 0004 1936 9924Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX 78712 USA
| | - Jeffrey M. Gross
- grid.21925.3d0000 0004 1936 9000Department of Ophthalmology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213 USA ,grid.89336.370000 0004 1936 9924Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX 78712 USA
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25
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Dong-Chen X, Yong C, Yang X, Chen-Yu S, Li-Hua P. Signaling pathways in Parkinson's disease: molecular mechanisms and therapeutic interventions. Signal Transduct Target Ther 2023; 8:73. [PMID: 36810524 PMCID: PMC9944326 DOI: 10.1038/s41392-023-01353-3] [Citation(s) in RCA: 35] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 01/16/2023] [Accepted: 02/13/2023] [Indexed: 02/24/2023] Open
Abstract
Parkinson's disease (PD) is the second most common neurodegenerative disease worldwide, and its treatment remains a big challenge. The pathogenesis of PD may be related to environmental and genetic factors, and exposure to toxins and gene mutations may be the beginning of brain lesions. The identified mechanisms of PD include α-synuclein aggregation, oxidative stress, ferroptosis, mitochondrial dysfunction, neuroinflammation, and gut dysbiosis. The interactions among these molecular mechanisms complicate the pathogenesis of PD and pose great challenges to drug development. At the same time, the diagnosis and detection of PD are also one of obstacles to the treatment of PD due to its long latency and complex mechanism. Most conventional therapeutic interventions for PD possess limited effects and have serious side effects, heightening the need to develop novel treatments for this disease. In this review, we systematically summarized the pathogenesis, especially the molecular mechanisms of PD, the classical research models, clinical diagnostic criteria, and the reported drug therapy strategies, as well as the newly reported drug candidates in clinical trials. We also shed light on the components derived from medicinal plants that are newly identified for their effects in PD treatment, with the expectation to provide the summary and outlook for developing the next generation of drugs and preparations for PD therapy.
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Affiliation(s)
- Xu Dong-Chen
- College of Pharmaceutical Sciences, Zhejiang University, 310058, Hangzhou, P. R. China
| | - Chen Yong
- College of Pharmaceutical Sciences, Zhejiang University, 310058, Hangzhou, P. R. China
| | - Xu Yang
- College of Pharmaceutical Sciences, Zhejiang University, 310058, Hangzhou, P. R. China
| | - ShenTu Chen-Yu
- College of Pharmaceutical Sciences, Zhejiang University, 310058, Hangzhou, P. R. China
| | - Peng Li-Hua
- College of Pharmaceutical Sciences, Zhejiang University, 310058, Hangzhou, P. R. China. .,State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, P. R. China.
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26
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Genchi A, Brambilla E, Sangalli F, Radaelli M, Bacigaluppi M, Furlan R, Andolfo A, Drago D, Magagnotti C, Scotti GM, Greco R, Vezzulli P, Ottoboni L, Bonopane M, Capilupo D, Ruffini F, Belotti D, Cabiati B, Cesana S, Matera G, Leocani L, Martinelli V, Moiola L, Vago L, Panina-Bordignon P, Falini A, Ciceri F, Uglietti A, Sormani MP, Comi G, Battaglia MA, Rocca MA, Storelli L, Pagani E, Gaipa G, Martino G. Neural stem cell transplantation in patients with progressive multiple sclerosis: an open-label, phase 1 study. Nat Med 2023; 29:75-85. [PMID: 36624312 PMCID: PMC9873560 DOI: 10.1038/s41591-022-02097-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 10/17/2022] [Indexed: 01/11/2023]
Abstract
Innovative pro-regenerative treatment strategies for progressive multiple sclerosis (PMS), combining neuroprotection and immunomodulation, represent an unmet need. Neural precursor cells (NPCs) transplanted in animal models of multiple sclerosis have shown preclinical efficacy by promoting neuroprotection and remyelination by releasing molecules sustaining trophic support and neural plasticity. Here we present the results of STEMS, a prospective, therapeutic exploratory, non-randomized, open-label, single-dose-finding phase 1 clinical trial ( NCT03269071 , EudraCT 2016-002020-86), performed at San Raffaele Hospital in Milan, Italy, evaluating the feasibility, safety and tolerability of intrathecally transplanted human fetal NPCs (hfNPCs) in 12 patients with PMS (with evidence of disease progression, Expanded Disability Status Scale ≥6.5, age 18-55 years, disease duration 2-20 years, without any alternative approved therapy). The safety primary outcome was reached, with no severe adverse reactions related to hfNPCs at 2-year follow-up, clearly demonstrating that hfNPC therapy in PMS is feasible, safe and tolerable. Exploratory secondary analyses showed a lower rate of brain atrophy in patients receiving the highest dosage of hfNPCs and increased cerebrospinal fluid levels of anti-inflammatory and neuroprotective molecules. Although preliminary, these results support the rationale and value of future clinical studies with the highest dose of hfNPCs in a larger cohort of patients.
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Affiliation(s)
- Angela Genchi
- grid.18887.3e0000000417581884Neuroimmunology Unit, Institute of Experimental Neurology, IRCCS San Raffaele Scientific Institute, Milan, Italy ,grid.18887.3e0000000417581884Department of Neurology, IRCCS San Raffaele Scientific Institute, Milan, Italy ,grid.15496.3f0000 0001 0439 0892University Vita-Salute San Raffaele, Milan, Italy
| | - Elena Brambilla
- grid.18887.3e0000000417581884Neuroimmunology Unit, Institute of Experimental Neurology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Francesca Sangalli
- grid.18887.3e0000000417581884Department of Neurology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Marta Radaelli
- grid.18887.3e0000000417581884Department of Neurology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Marco Bacigaluppi
- grid.18887.3e0000000417581884Neuroimmunology Unit, Institute of Experimental Neurology, IRCCS San Raffaele Scientific Institute, Milan, Italy ,grid.18887.3e0000000417581884Department of Neurology, IRCCS San Raffaele Scientific Institute, Milan, Italy ,grid.15496.3f0000 0001 0439 0892University Vita-Salute San Raffaele, Milan, Italy
| | - Roberto Furlan
- grid.15496.3f0000 0001 0439 0892University Vita-Salute San Raffaele, Milan, Italy ,grid.18887.3e0000000417581884Clinical Neuroimmunology Unit, Institute of Experimental Neurology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Annapaola Andolfo
- grid.18887.3e0000000417581884ProMeFa, Proteomics and Metabolomics Facility, Center for Omics Sciences (COSR), IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Denise Drago
- grid.18887.3e0000000417581884ProMeFa, Proteomics and Metabolomics Facility, Center for Omics Sciences (COSR), IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Cinzia Magagnotti
- grid.18887.3e0000000417581884ProMeFa, Proteomics and Metabolomics Facility, Center for Omics Sciences (COSR), IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Giulia Maria Scotti
- grid.18887.3e0000000417581884Center for Omics Sciences (COSR), IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Raffaella Greco
- grid.18887.3e0000000417581884Haematology and Bone Marrow Transplantation Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Paolo Vezzulli
- grid.18887.3e0000000417581884Department of Neuroradiology and CERMAC, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Linda Ottoboni
- grid.18887.3e0000000417581884Neuroimmunology Unit, Institute of Experimental Neurology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Marco Bonopane
- grid.18887.3e0000000417581884Clinical Trial Center, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Daniela Capilupo
- grid.18887.3e0000000417581884Department of Neurology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Francesca Ruffini
- grid.18887.3e0000000417581884Neuroimmunology Unit, Institute of Experimental Neurology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Daniela Belotti
- grid.415025.70000 0004 1756 8604M. Tettamanti Research Center, Pediatric Clinic University of Milano-Bicocca, San Gerardo Hospital, Monza, Italy ,grid.415025.70000 0004 1756 8604Laboratorio di Terapia Cellulare e Genica Stefano Verri, ASST-Monza, Ospedale San Gerardo, Monza, Italy
| | - Benedetta Cabiati
- grid.415025.70000 0004 1756 8604M. Tettamanti Research Center, Pediatric Clinic University of Milano-Bicocca, San Gerardo Hospital, Monza, Italy ,grid.415025.70000 0004 1756 8604Laboratorio di Terapia Cellulare e Genica Stefano Verri, ASST-Monza, Ospedale San Gerardo, Monza, Italy
| | - Stefania Cesana
- grid.415025.70000 0004 1756 8604M. Tettamanti Research Center, Pediatric Clinic University of Milano-Bicocca, San Gerardo Hospital, Monza, Italy ,grid.415025.70000 0004 1756 8604Laboratorio di Terapia Cellulare e Genica Stefano Verri, ASST-Monza, Ospedale San Gerardo, Monza, Italy
| | - Giada Matera
- grid.415025.70000 0004 1756 8604M. Tettamanti Research Center, Pediatric Clinic University of Milano-Bicocca, San Gerardo Hospital, Monza, Italy ,grid.415025.70000 0004 1756 8604Laboratorio di Terapia Cellulare e Genica Stefano Verri, ASST-Monza, Ospedale San Gerardo, Monza, Italy
| | - Letizia Leocani
- grid.15496.3f0000 0001 0439 0892University Vita-Salute San Raffaele, Milan, Italy
| | - Vittorio Martinelli
- grid.18887.3e0000000417581884Department of Neurology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Lucia Moiola
- grid.18887.3e0000000417581884Department of Neurology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Luca Vago
- grid.18887.3e0000000417581884Haematology and Bone Marrow Transplantation Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Paola Panina-Bordignon
- grid.18887.3e0000000417581884Neuroimmunology Unit, Institute of Experimental Neurology, IRCCS San Raffaele Scientific Institute, Milan, Italy ,grid.15496.3f0000 0001 0439 0892University Vita-Salute San Raffaele, Milan, Italy
| | - Andrea Falini
- grid.15496.3f0000 0001 0439 0892University Vita-Salute San Raffaele, Milan, Italy ,grid.18887.3e0000000417581884Department of Neuroradiology and CERMAC, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Fabio Ciceri
- grid.15496.3f0000 0001 0439 0892University Vita-Salute San Raffaele, Milan, Italy ,grid.18887.3e0000000417581884Haematology and Bone Marrow Transplantation Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Anna Uglietti
- grid.414818.00000 0004 1757 8749Department of Gynaecology, IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Maria Pia Sormani
- grid.5606.50000 0001 2151 3065Biostatistics Unit, Department of Health Sciences (DISSAL), University of Genoa, Genoa, Italy
| | - Giancarlo Comi
- grid.15496.3f0000 0001 0439 0892University Vita-Salute San Raffaele, Milan, Italy
| | | | - Maria A. Rocca
- grid.18887.3e0000000417581884Department of Neurology, IRCCS San Raffaele Scientific Institute, Milan, Italy ,grid.15496.3f0000 0001 0439 0892University Vita-Salute San Raffaele, Milan, Italy ,grid.18887.3e0000000417581884Neuroimaging Research Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Loredana Storelli
- grid.18887.3e0000000417581884Neuroimaging Research Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Elisabetta Pagani
- grid.18887.3e0000000417581884Neuroimaging Research Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Giuseppe Gaipa
- grid.415025.70000 0004 1756 8604M. Tettamanti Research Center, Pediatric Clinic University of Milano-Bicocca, San Gerardo Hospital, Monza, Italy ,grid.415025.70000 0004 1756 8604Laboratorio di Terapia Cellulare e Genica Stefano Verri, ASST-Monza, Ospedale San Gerardo, Monza, Italy
| | - Gianvito Martino
- Neuroimmunology Unit, Institute of Experimental Neurology, IRCCS San Raffaele Scientific Institute, Milan, Italy. .,Department of Neurology, IRCCS San Raffaele Scientific Institute, Milan, Italy. .,University Vita-Salute San Raffaele, Milan, Italy.
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27
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Schlaudraff J, Paul MH, Deller T, Del Turco D. Precise measurement of gene expression changes in mouse brain areas denervated by injury. Sci Rep 2022; 12:22530. [PMID: 36581670 DOI: 10.1038/s41598-022-26228-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 12/12/2022] [Indexed: 12/30/2022] Open
Abstract
Quantitative PCR (qPCR) is a widely used method to study gene expression changes following brain injury. The accuracy of this method depends on the tissue harvested, the time course analyzed and, in particular on the choice of appropriate internal controls, i.e., reference genes (RGs). In the present study we have developed and validated an algorithm for the accurate normalization of qPCR data using laser microdissected tissue from the mouse dentate gyrus after entorhinal denervation at 0, 1, 3, 7, 14 and 28 days postlesion. The expression stabilities of ten candidate RGs were evaluated in the denervated granule cell layer (gcl) and outer molecular layer (oml) of the dentate gyrus. Advanced software algorithms demonstrated differences in stability for single RGs in the two layers at several time points postlesion. In comparison, a normalization index of several stable RGs covered the entire post-lesional time course and showed high stability. Using these RGs, we validated our findings and quantified glial fibrillary acidic protein (Gfap) mRNA and allograft inflammatory factor 1 (Aif1/Iba1) mRNA in the denervated oml. We compared the use of single RGs for normalization with the normalization index and found that single RGs yield variable results. In contrast, the normalization index gave stable results. In sum, our study shows that qPCR can yield precise, reliable, and reproducible datasets even under such complex conditions as brain injury or denervation, provided appropriate RGs for the model are used. The algorithm reported here can easily be adapted and transferred to any other brain injury model.
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Nicolelis MAL, Alho EJL, Donati ARC, Yonamine S, Aratanha MA, Bao G, Campos DSF, Almeida S, Fischer D, Shokur S. Training with noninvasive brain-machine interface, tactile feedback, and locomotion to enhance neurological recovery in individuals with complete paraplegia: a randomized pilot study. Sci Rep 2022; 12:20545. [PMID: 36446797 DOI: 10.1038/s41598-022-24864-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 11/22/2022] [Indexed: 11/30/2022] Open
Abstract
In recent years, our group and others have reported multiple cases of consistent neurological recovery in people with spinal cord injury (SCI) following a protocol that integrates locomotion training with brain machine interfaces (BMI). The primary objective of this pilot study was to compare the neurological outcomes (motor, tactile, nociception, proprioception, and vibration) in both an intensive assisted locomotion training (LOC) and a neurorehabilitation protocol integrating assisted locomotion with a noninvasive brain-machine interface (L + BMI), virtual reality, and tactile feedback. We also investigated whether individuals with chronic-complete SCI could learn to perform leg motor imagery. We ran a parallel two-arm randomized pilot study; the experiments took place in São Paulo, Brazil. Eight adults sensorimotor-complete (AIS A) (all male) with chronic (> 6 months) traumatic spinal SCI participated in the protocol that was organized in two blocks of 14 weeks of training and an 8-week follow-up. The participants were allocated to either the LOC group (n = 4) or L + BMI group (n = 4) using block randomization (blinded outcome assessment). We show three important results: (i) locomotion training alone can induce some level of neurological recovery in sensorimotor-complete SCI, and (ii) the recovery rate is enhanced when such locomotion training is associated with BMI and tactile feedback (∆Mean Lower Extremity Motor score improvement for LOC = + 2.5, L + B = + 3.5; ∆Pinprick score: LOC = + 3.75, L + B = + 4.75 and ∆Tactile score LOC = + 4.75, L + B = + 9.5). (iii) Furthermore, we report that the BMI classifier accuracy was significantly above the chance level for all participants in L + B group. Our study shows potential for sensory and motor improvement in individuals with chronic complete SCI following a protocol with BMIs and locomotion therapy. We report no dropouts nor adverse events in both subgroups participating in the study, opening the possibility for a more definitive clinical trial with a larger cohort of people with SCI.Trial registration: http://www.ensaiosclinicos.gov.br/ identifier RBR-2pb8gq.
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Do Rhee K, Wang Y, Ten Hoeve J, Stiles L, Nguyen TTT, Zhang X, Vergnes L, Reue K, Shirihai O, Bok D, Yang XJ. Ciliary neurotrophic factor-mediated neuroprotection involves enhanced glycolysis and anabolism in degenerating mouse retinas. Nat Commun 2022; 13:7037. [PMID: 36396639 DOI: 10.1038/s41467-022-34443-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Accepted: 10/25/2022] [Indexed: 11/18/2022] Open
Abstract
Ciliary neurotrophic factor (CNTF) acts as a potent neuroprotective cytokine in multiple models of retinal degeneration. To understand mechanisms underlying its broad neuroprotective effects, we have investigated the influence of CNTF on metabolism in a mouse model of photoreceptor degeneration. CNTF treatment improves the morphology of photoreceptor mitochondria, but also leads to reduced oxygen consumption and suppressed respiratory chain activities. Molecular analyses show elevated glycolytic pathway gene transcripts and active enzymes. Metabolomics analyses detect significantly higher levels of ATP and the energy currency phosphocreatine, elevated glycolytic pathway metabolites, increased TCA cycle metabolites, lipid biosynthetic pathway intermediates, nucleotides, and amino acids. Moreover, CNTF treatment restores the key antioxidant glutathione to the wild type level. Therefore, CNTF significantly impacts the metabolic status of degenerating retinas by promoting aerobic glycolysis and augmenting anabolic activities. These findings reveal cellular mechanisms underlying enhanced neuronal viability and suggest potential therapies for treating retinal degeneration.
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Xu L, Chen Z, Li X, Xu H, Zhang Y, Yang W, Chen J, Zhang S, Xu L, Zhou S, Li G, Yu B, Gu X, Yang J. Integrated analyses reveal evolutionarily conserved and specific injury response genes in dorsal root ganglion. Sci Data 2022; 9:666. [PMID: 36323676 PMCID: PMC9630366 DOI: 10.1038/s41597-022-01783-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 10/17/2022] [Indexed: 01/24/2023] Open
Abstract
Rodent dorsal root ganglion (DRG) is widely used for studying axonal injury. Extensive studies have explored genome-wide profiles on rodent DRGs under peripheral nerve insults. However, systematic integration and exploration of these data still be limited. Herein, we re-analyzed 21 RNA-seq datasets and presented a web-based resource (DRGProfile). We identified 53 evolutionarily conserved injury response genes, including well-known injury genes (Atf3, Npy and Gal) and less-studied transcriptional factors (Arid5a, Csrnp1, Zfp367). Notably, we identified species-preference injury response candidates (e.g. Gpr151, Lipn, Anxa10 in mice; Crisp3, Csrp3, Vip, Hamp in rats). Temporal profile analysis reveals expression patterns of genes related to pre-regenerative and regenerating states. Finally, we found a large sex difference in response to sciatic nerve injury, and identified four male-specific markers (Uty, Eif2s3y, Kdm5d, Ddx3y) expressed in DRG. Our study provides a comprehensive integrated landscape for expression change in DRG upon injury which will greatly contribute to the neuroscience community.
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Affiliation(s)
- Lian Xu
- grid.260483.b0000 0000 9530 8833Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, 19# Qixiu Road, Nantong, Jiangsu 226001 China
| | - Zhifeng Chen
- grid.260483.b0000 0000 9530 8833Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, 19# Qixiu Road, Nantong, Jiangsu 226001 China
| | - Xiaodi Li
- grid.410745.30000 0004 1765 1045Nanjing University of Chinese Medicine, Nanjing, China
| | - Hui Xu
- grid.260483.b0000 0000 9530 8833Nantong Institute of Genetics and Reproductive Medicine, Affiliated Maternity and Child Healthcare Hospital of Nantong University, Nantong, Jiangsu China
| | - Yu Zhang
- grid.410745.30000 0004 1765 1045Nanjing University of Chinese Medicine, Nanjing, China
| | - Weiwei Yang
- grid.410745.30000 0004 1765 1045Nanjing University of Chinese Medicine, Nanjing, China
| | - Jing Chen
- grid.260483.b0000 0000 9530 8833Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, 19# Qixiu Road, Nantong, Jiangsu 226001 China
| | - Shuqiang Zhang
- grid.260483.b0000 0000 9530 8833Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, 19# Qixiu Road, Nantong, Jiangsu 226001 China
| | - Lingchi Xu
- grid.260483.b0000 0000 9530 8833Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, 19# Qixiu Road, Nantong, Jiangsu 226001 China
| | - Songlin Zhou
- grid.260483.b0000 0000 9530 8833Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, 19# Qixiu Road, Nantong, Jiangsu 226001 China
| | - Guicai Li
- grid.260483.b0000 0000 9530 8833Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, 19# Qixiu Road, Nantong, Jiangsu 226001 China
| | - Bin Yu
- grid.260483.b0000 0000 9530 8833Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, 19# Qixiu Road, Nantong, Jiangsu 226001 China
| | - Xiaosong Gu
- grid.260483.b0000 0000 9530 8833Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, 19# Qixiu Road, Nantong, Jiangsu 226001 China ,grid.410745.30000 0004 1765 1045Nanjing University of Chinese Medicine, Nanjing, China
| | - Jian Yang
- grid.260483.b0000 0000 9530 8833Key Laboratory of Neuroregeneration, Ministry of Education and Jiangsu Province, Co-innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, 19# Qixiu Road, Nantong, Jiangsu 226001 China
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Pinto R, Matula J, Gomez-Lazaro M, Sousa M, Lobo A, Zikmund T, Kaiser J, Gomes JR. High-resolution micro-CT for 3D infarct characterization and segmentation in mice stroke models. Sci Rep 2022; 12:17471. [PMID: 36261475 DOI: 10.1038/s41598-022-21494-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 09/28/2022] [Indexed: 01/12/2023] Open
Abstract
Characterization of brain infarct lesions in rodent models of stroke is crucial to assess stroke pathophysiology and therapy outcome. Until recently, the analysis of brain lesions was performed using two techniques: (1) histological methods, such as TTC (Triphenyltetrazolium chloride), a time-consuming and inaccurate process; or (2) MRI imaging, a faster, 3D imaging method, that comes at a high cost. In the last decade, high-resolution micro-CT for 3D sample analysis turned into a simple, fast, and cheaper solution. Here, we successfully describe the application of brain contrasting agents (Osmium tetroxide and inorganic iodine) for high-resolution micro-CT imaging for fine location and quantification of ischemic lesion and edema in mouse preclinical stroke models. We used the intraluminal transient MCAO (Middle Cerebral Artery Occlusion) mouse stroke model to identify and quantify ischemic lesion and edema, and segment core and penumbra regions at different time points after ischemia, by manual and automatic methods. In the transient-ischemic-attack (TIA) mouse model, we can quantify striatal myelinated fibers degeneration. Of note, whole brain 3D reconstructions allow brain atlas co-registration, to identify the affected brain areas, and correlate them with functional impairment. This methodology proves to be a breakthrough in the field, by providing a precise and detailed assessment of stroke outcomes in preclinical animal studies.
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Noro T, Shah SH, Yin Y, Kawaguchi R, Yokota S, Chang KC, Madaan A, Sun C, Coppola G, Geschwind D, Benowitz LI, Goldberg JL. Elk-1 regulates retinal ganglion cell axon regeneration after injury. Sci Rep 2022; 12:17446. [PMID: 36261683 PMCID: PMC9581912 DOI: 10.1038/s41598-022-21767-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 09/30/2022] [Indexed: 01/12/2023] Open
Abstract
Adult central nervous system (CNS) axons fail to regenerate after injury, and master regulators of the regenerative program remain to be identified. We analyzed the transcriptomes of retinal ganglion cells (RGCs) at 1 and 5 days after optic nerve injury with and without a cocktail of strongly pro-regenerative factors to discover genes that regulate survival and regeneration. We used advanced bioinformatic analysis to identify the top transcriptional regulators of upstream genes and cross-referenced these with the regulators upstream of genes differentially expressed between embryonic RGCs that exhibit robust axon growth vs. postnatal RGCs where this potential has been lost. We established the transcriptional activator Elk-1 as the top regulator of RGC gene expression associated with axon outgrowth in both models. We demonstrate that Elk-1 is necessary and sufficient to promote RGC neuroprotection and regeneration in vivo, and is enhanced by manipulating specific phosphorylation sites. Finally, we co-manipulated Elk-1, PTEN, and REST, another transcription factor discovered in our analysis, and found Elk-1 to be downstream of PTEN and inhibited by REST in the survival and axon regenerative pathway in RGCs. These results uncover the basic mechanisms of regulation of survival and axon growth and reveal a novel, potent therapeutic strategy to promote neuroprotection and regeneration in the adult CNS.
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Affiliation(s)
- Takahiko Noro
- Spencer Center for Vision Research, Byers Eye Institute, Stanford University, 1651 Page Mill Rd, Palo Alto, CA, 94034, USA
- Department of Ophthalmology, Jikei University School of Medicine, Tokyo, Japan
| | - Sahil H Shah
- Spencer Center for Vision Research, Byers Eye Institute, Stanford University, 1651 Page Mill Rd, Palo Alto, CA, 94034, USA.
- Medical Scientist Training Program, University of California San Diego, La Jolla, CA, USA.
| | - Yuqin Yin
- Department of Neurosurgery, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Riki Kawaguchi
- Departments of Neurology and Psychiatry, University of California Los Angeles, Los Angeles, CA, USA
| | - Satoshi Yokota
- Spencer Center for Vision Research, Byers Eye Institute, Stanford University, 1651 Page Mill Rd, Palo Alto, CA, 94034, USA
- Kobe City Eye Hospital, Kobe, Hyogo, Japan
| | - Kun-Che Chang
- Department of Ophthalmology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Ankush Madaan
- Spencer Center for Vision Research, Byers Eye Institute, Stanford University, 1651 Page Mill Rd, Palo Alto, CA, 94034, USA
| | - Catalina Sun
- Spencer Center for Vision Research, Byers Eye Institute, Stanford University, 1651 Page Mill Rd, Palo Alto, CA, 94034, USA
| | - Giovanni Coppola
- Departments of Neurology and Psychiatry, University of California Los Angeles, Los Angeles, CA, USA
| | - Daniel Geschwind
- Departments of Neurology and Psychiatry, University of California Los Angeles, Los Angeles, CA, USA
| | - Larry I Benowitz
- Department of Neurosurgery, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Jeffrey L Goldberg
- Spencer Center for Vision Research, Byers Eye Institute, Stanford University, 1651 Page Mill Rd, Palo Alto, CA, 94034, USA
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Vilallongue N, Schaeffer J, Hesse AM, Delpech C, Blot B, Paccard A, Plissonnier E, Excoffier B, Couté Y, Belin S, Nawabi H. Guidance landscapes unveiled by quantitative proteomics to control reinnervation in adult visual system. Nat Commun 2022; 13:6040. [PMID: 36229455 DOI: 10.1038/s41467-022-33799-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 09/30/2022] [Indexed: 12/24/2022] Open
Abstract
In the injured adult central nervous system (CNS), activation of pro-growth molecular pathways in neurons leads to long-distance regeneration. However, most regenerative fibers display guidance defects, which prevent reinnervation and functional recovery. Therefore, the molecular characterization of the proper target regions of regenerative axons is essential to uncover the modalities of adult reinnervation. In this study, we use mass spectrometry (MS)-based quantitative proteomics to address the proteomes of major nuclei of the adult visual system. These analyses reveal that guidance-associated molecules are expressed in adult visual targets. Moreover, we show that bilateral optic nerve injury modulates the expression of specific proteins. In contrast, the expression of guidance molecules remains steady. Finally, we show that regenerative axons are able to respond to guidance cues ex vivo, suggesting that these molecules possibly interfere with brain target reinnervation in adult. Using a long-distance regeneration model, we further demonstrate that the silencing of specific guidance signaling leads to rerouting of regenerative axons in vivo. Altogether, our results suggest ways to modulate axon guidance of regenerative neurons to achieve circuit repair in adult.
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Au NPB, Kumar G, Asthana P, Gao F, Kawaguchi R, Chang RCC, So KF, Hu Y, Geschwind DH, Coppola G, Ma CHE. Clinically relevant small-molecule promotes nerve repair and visual function recovery. NPJ Regen Med 2022; 7:50. [PMID: 36182946 PMCID: PMC9526721 DOI: 10.1038/s41536-022-00233-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Accepted: 07/01/2022] [Indexed: 12/01/2022] Open
Abstract
Adult mammalian injured axons regenerate over short-distance in the peripheral nervous system (PNS) while the axons in the central nervous system (CNS) are unable to regrow after injury. Here, we demonstrated that Lycium barbarum polysaccharides (LBP), purified from Wolfberry, accelerated long-distance axon regeneration after severe peripheral nerve injury (PNI) and optic nerve crush (ONC). LBP not only promoted intrinsic growth capacity of injured neurons and function recovery after severe PNI, but also induced robust retinal ganglion cell (RGC) survival and axon regeneration after ONC. By using LBP gene expression profile signatures to query a Connectivity map database, we identified a Food and Drug Administration (FDA)-approved small-molecule glycopyrrolate, which promoted PNS axon regeneration, RGC survival and sustained CNS axon regeneration, increased neural firing in the superior colliculus, and enhanced visual target re-innervations by regenerating RGC axons leading to a partial restoration of visual function after ONC. Our study provides insights into repurposing of FDA-approved small molecule for nerve repair and function recovery.
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Affiliation(s)
- Ngan Pan Bennett Au
- grid.35030.350000 0004 1792 6846Department of Neuroscience, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong SAR
| | - Gajendra Kumar
- grid.35030.350000 0004 1792 6846Department of Neuroscience, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong SAR
| | - Pallavi Asthana
- grid.35030.350000 0004 1792 6846Department of Neuroscience, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong SAR
| | - Fuying Gao
- grid.19006.3e0000 0000 9632 6718Department of Psychiatry, Semel Institute for Neuroscience and Human Behavior, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095 USA
| | - Riki Kawaguchi
- grid.19006.3e0000 0000 9632 6718Department of Psychiatry, Semel Institute for Neuroscience and Human Behavior, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095 USA
| | - Raymond Chuen Chung Chang
- grid.194645.b0000000121742757Laboratory of Neurodegenerative Diseases, School of Biomedical Sciences, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR ,grid.194645.b0000000121742757State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Pokfulam, Hong Kong SAR
| | - Kwok Fai So
- grid.194645.b0000000121742757State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Pokfulam, Hong Kong SAR ,grid.194645.b0000000121742757Department of Ophthalmology, The University of Hong Kong, Pokfulam, Hong Kong ,grid.258164.c0000 0004 1790 3548Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou, China
| | - Yang Hu
- grid.168010.e0000000419368956Department of Ophthalmology, Stanford University School of Medicine, Palo Alto, USA
| | - Daniel H. Geschwind
- grid.19006.3e0000 0000 9632 6718Program in Neurogenetics, Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095 USA ,grid.19006.3e0000 0000 9632 6718Department of Human Genetics, University of California, Los Angeles, Los Angeles, CA 90095 USA
| | - Giovanni Coppola
- grid.19006.3e0000 0000 9632 6718Program in Neurogenetics, Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095 USA ,grid.19006.3e0000 0000 9632 6718Department of Human Genetics, University of California, Los Angeles, Los Angeles, CA 90095 USA
| | - Chi Him Eddie Ma
- Department of Neuroscience, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong SAR.
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O'Shea TM, Ao Y, Wang S, Wollenberg AL, Kim JH, Ramos Espinoza RA, Czechanski A, Reinholdt LG, Deming TJ, Sofroniew MV. Lesion environments direct transplanted neural progenitors towards a wound repair astroglial phenotype in mice. Nat Commun 2022; 13:5702. [PMID: 36171203 DOI: 10.1038/s41467-022-33382-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 09/14/2022] [Indexed: 01/30/2023] Open
Abstract
Neural progenitor cells (NPC) represent potential cell transplantation therapies for CNS injuries. To understand how lesion environments influence transplanted NPC fate in vivo, we derived NPC expressing a ribosomal protein-hemagglutinin tag (RiboTag) for transcriptional profiling of transplanted NPC. Here, we show that NPC grafted into uninjured mouse CNS generate cells that are transcriptionally similar to healthy astrocytes and oligodendrocyte lineages. In striking contrast, NPC transplanted into subacute CNS lesions after stroke or spinal cord injury in mice generate cells that share transcriptional, morphological and functional features with newly proliferated host astroglia that restrict inflammation and fibrosis and isolate lesions from adjacent viable neural tissue. Our findings reveal overlapping differentiation potentials of grafted NPC and proliferating host astrocytes; and show that in the absence of other interventions, non-cell autonomous cues in subacute CNS lesions direct the differentiation of grafted NPC towards a naturally occurring wound repair astroglial phenotype.
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Kemp KC, Georgievskaya A, Hares K, Redondo J, Bailey S, Rice CM, Scolding NJ, Metcalfe C, Wilkins A. An open-label pilot study of recombinant granulocyte-colony stimulating factor in Friedreich's ataxia. Nat Commun 2022; 13:4655. [PMID: 35945193 DOI: 10.1038/s41467-022-31450-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 06/20/2022] [Indexed: 11/25/2022] Open
Abstract
Friedreich's ataxia (FA) is an inherited progressive neurodegenerative disease for which there is no proven disease-modifying treatment. Here we perform an open-label, pilot study of recombinant human granulocyte-colony stimulating factor (G-CSF) administration in seven people with FA (EudraCT: 2017-003084-34); each participant receiving a single course of G-CSF (Lenograstim; 1.28 million units per kg per day for 5 days). The primary outcome is peripheral blood mononuclear cell frataxin levels over a 19-day period. The secondary outcomes include safety, haematopoietic stem cell (HSC) mobilisation, antioxidant levels and mitochondrial enzyme activity. The trial meets pre-specified endpoints. We show that administration of G-CSF to people with FA is safe. Mobilisation of HSCs in response to G-CSF is comparable to that of healthy individuals. Notably, sustained increases in cellular frataxin concentrations and raised PGC-1α and Nrf2 expression are detected. Our findings show potential for G-CSF therapy to have a clinical impact in people with FA.
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Vitaliano GD, Kim JK, Kaufman MJ, Adam CW, Zeballos G, Shanmugavadivu A, Subburaju S, McLaughlin JP, Lukas SE, Vitaliano F. Clathrin-nanoparticles deliver BDNF to hippocampus and enhance neurogenesis, synaptogenesis and cognition in HIV/neuroAIDS mouse model. Commun Biol 2022; 5:236. [PMID: 35301411 DOI: 10.1038/s42003-022-03177-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 02/17/2022] [Indexed: 01/02/2023] Open
Abstract
Brain derived neurotrophic factor (BDNF) promotes the growth, differentiation, maintenance and survival of neurons. These attributes make BDNF a potentially powerful therapeutic agent. However, its charge, instability in blood, and poor blood brain barrier (BBB) penetrability have impeded its development. Here, we show that engineered clathrin triskelia (CT) conjugated to BDNF (BDNF-CT) and delivered intranasally increased hippocampal BDNF concentrations 400-fold above that achieved previously with intranasal BDNF alone. We also show that BDNF-CT targeted Tropomyosin receptor kinase B (TrkB) and increased TrkB expression and downstream signaling in iTat mouse brains. Mice were induced to conditionally express neurotoxic HIV Transactivator-of-Transcription (Tat) protein that decreases BDNF. Down-regulation of BDNF is correlated with increased severity of HIV/neuroAIDS. BDNF-CT enhanced neurorestorative effects in the hippocampus including newborn cell proliferation and survival, granule cell neurogenesis, synaptogenesis and increased dendritic integrity. BDNF-CT exerted cognitive-enhancing effects by reducing Tat-induced learning and memory deficits. These results show that CT bionanoparticles efficiently deliver BDNF to the brain, making them potentially powerful tools in regenerative medicine.
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Youze H, Ting Y, Yaqi B, Tianshen X, Tiecheng W, Jingsong W. Computer aided self-regulation learning and cognitive training improve generalization ability of patients with poststroke cognitive impairment. Sci Rep 2021; 11:24200. [PMID: 34921201 PMCID: PMC8683486 DOI: 10.1038/s41598-021-03620-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Accepted: 12/07/2021] [Indexed: 11/09/2022] Open
Abstract
Emerging studies suggest the application of self-regulation learning (SRL) to improve generalization abilities in poststroke patients. SRL has been proposed to have an added effect on computer-aided cognitive training (CACT). This study aimed to examine the efficacy of an intervention combining computer-aided SRL (CA-SRL) training and CACT for generalization abilities and cognitive function in patients with poststroke cognitive impairment (PSCI). A total of 75 patients recruited from a rehabilitation centre were randomly assigned to a CA-SRL group, demonstration learning (DL) group and traditional learning (TL) group. Finally, 72 patients were included in the analysis. Over 3 weeks, the patients in these three groups underwent CA-SRL or DL training combined with cognitive training. After the intervention, all outcomes significantly improved (P < 0.05). The CA-SRL group showed better improvements in all trained tasks among the groups, especially in "wash the dishes" and "change the bed". The results of the analysis for generalization abilities showed that CA-SRL group patients obtained the highest scores among the groups in untrained tasks. The mean changes in the Montreal Cognitive Assessment in both the CA-SRL and TL groups were significantly higher than those in the DL group (P < 0.001, P = 0.002) after adjusting for education level and Lawton Instrumental ADL Scale score. In general, the combination of CA-SRL and CACT is effective for PSCI patients and has a better effect on promoting skill generalization from cognitive gains than traditional training.
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Affiliation(s)
- He Youze
- College of Rehabilitation Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Yang Ting
- College of Rehabilitation Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Bao Yaqi
- College of Rehabilitation Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Xiao Tianshen
- College of Rehabilitation Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Wu Tiecheng
- College of Rehabilitation Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, China
- Fujian Collaborative Innovation Center for Rehabilitation Technology, Fuzhou, China
| | - Wu Jingsong
- College of Rehabilitation Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, China.
- Fujian Collaborative Innovation Center for Rehabilitation Technology, Fuzhou, China.
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Yazdani A, Howidi B, Shi MZ, Tugarinov N, Khoja Z, Wintermark P. Sildenafil improves hippocampal brain injuries and restores neuronal development after neonatal hypoxia-ischemia in male rat pups. Sci Rep 2021; 11:22046. [PMID: 34764335 PMCID: PMC8586032 DOI: 10.1038/s41598-021-01097-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 10/08/2021] [Indexed: 02/07/2023] Open
Abstract
The hippocampus is a fundamental structure of the brain that plays an important role in neurodevelopment and is very sensitive to hypoxia-ischemia (HI). The purpose of this study was to investigate the effects of sildenafil on neonatal hippocampal brain injuries resulting from HI, and on neuronal development in this context. HI was induced in male Long-Evans rat pups at postnatal day 10 (P10) by a left common carotid ligation followed by a 2-h exposure to 8% oxygen. Rat pups were randomized to vehicle or sildenafil given orally twice daily for 7 days starting 12 h after HI. Hematoxylin and eosin staining was performed at P30 to measure the surface of the hippocampus; immunohistochemistry was performed to stain neurons, oligodendrocytes, and glial cells in the hippocampus. Western blots of the hippocampus were performed at P12, P17, and P30 to study the expression of neuronal markers and mTOR pathway. HI caused significant hippocampal atrophy and a significant reduction of the number of mature neurons, and induced reactive astrocytosis and microgliosis in the hippocampus. HI increased apoptosis and caused significant dysregulation of the normal neuronal development program. Treatment with sildenafil preserved the gross morphology of the hippocampus, reverted the number of mature neurons to levels comparable to sham rats, significantly increased both the immature and mature oligodendrocytes, and significantly reduced the number of microglia and astrocytes. Sildenafil also decreased apoptosis and reestablished the normal progression of post-natal neuronal development. The PI3K/Akt/mTOR pathway, whose activity was decreased after HI in the hippocampus, and restored after sildenafil treatment, may be involved. Sildenafil may have both neuroprotective and neurorestorative properties in the neonatal hippocampus following HI.
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Affiliation(s)
- Armin Yazdani
- grid.63984.300000 0000 9064 4811Research Institute of the McGill University Health Centre, Montreal, Canada
| | - Belal Howidi
- grid.63984.300000 0000 9064 4811Research Institute of the McGill University Health Centre, Montreal, Canada
| | - Meng Zhu Shi
- grid.63984.300000 0000 9064 4811Research Institute of the McGill University Health Centre, Montreal, Canada
| | - Nicol Tugarinov
- grid.63984.300000 0000 9064 4811Research Institute of the McGill University Health Centre, Montreal, Canada
| | - Zehra Khoja
- grid.63984.300000 0000 9064 4811Research Institute of the McGill University Health Centre, Montreal, Canada
| | - Pia Wintermark
- Research Institute of the McGill University Health Centre, Montreal, Canada. .,Division of Newborn Medicine, Department of Pediatrics, Montreal Children's Hospital, 1001 boul. Décarie, Site Glen Block E, EM0.3244, Montreal, QC, H4A 3J1, Canada.
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40
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Čadež T, Kolić D, Šinko G, Kovarik Z. Assessment of four organophosphorus pesticides as inhibitors of human acetylcholinesterase and butyrylcholinesterase. Sci Rep 2021; 11:21486. [PMID: 34728713 DOI: 10.1038/s41598-021-00953-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 10/20/2021] [Indexed: 11/08/2022] Open
Abstract
Toxicity of organophosphorus compounds (OPs) remains a major public health concern due to their widespread use as pesticides and the existence of nerve agents. Their common mechanism of action involves inhibition of enzymes acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) which are crucial for neurotransmission. Both chronic and acute poisoning by OPs can leave long-lasting health effects even when the patients are treated with standard medical therapy. Therefore, an increasing urgency exists to find more effective oxime reactivators for compounds which are resistant to reactivation, especially phosphoramidates. Here, we investigated in silico and in vitro interactions and kinetics of inhibition for human cholinesterases with four organophosphate pesticides-ethoprophos, fenamiphos, methamidophos and phosalone. Overall, ethoprophos and fenamiphos displayed higher potency as inhibitors for tested cholinesterases. Our results show that methamidophos-inhibited hAChE was more susceptible to reactivation than hAChE inhibited by fenamiphos by selected oximes. Molecular modelling enabled an evaluation of interactions important for specificity and selectivity of both inhibition and reactivation of cholinesterases. Two newly developed reactivators-bispyridinium triazole oxime 14A and zwitterionic oxime RS194B possess remarkable potential for further development of antidotes directed against pesticides and related phosphoramidate exposures, such as nerve agents tabun or Novichoks.
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Lentini C, d'Orange M, Marichal N, Trottmann MM, Vignoles R, Foucault L, Verrier C, Massera C, Raineteau O, Conzelmann KK, Rival-Gervier S, Depaulis A, Berninger B, Heinrich C. Reprogramming reactive glia into interneurons reduces chronic seizure activity in a mouse model of mesial temporal lobe epilepsy. Cell Stem Cell 2021; 28:2104-2121.e10. [PMID: 34592167 PMCID: PMC8657801 DOI: 10.1016/j.stem.2021.09.002] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 07/20/2021] [Accepted: 09/03/2021] [Indexed: 12/03/2022]
Abstract
Reprogramming brain-resident glial cells into clinically relevant induced neurons (iNs) is an emerging strategy toward replacing lost neurons and restoring lost brain functions. A fundamental question is now whether iNs can promote functional recovery in pathological contexts. We addressed this question in the context of therapy-resistant mesial temporal lobe epilepsy (MTLE), which is associated with hippocampal seizures and degeneration of hippocampal GABAergic interneurons. Using a MTLE mouse model, we show that retrovirus-driven expression of Ascl1 and Dlx2 in reactive hippocampal glia in situ, or in cortical astroglia grafted in the epileptic hippocampus, causes efficient reprogramming into iNs exhibiting hallmarks of interneurons. These induced interneurons functionally integrate into epileptic networks and establish GABAergic synapses onto dentate granule cells. MTLE mice with GABAergic iNs show a significant reduction in both the number and cumulative duration of spontaneous recurrent hippocampal seizures. Thus glia-to-neuron reprogramming is a potential disease-modifying strategy to reduce seizures in therapy-resistant epilepsy. Retroviruses target reactive hippocampal glia proliferating in a mouse model of mesial temporal lobe epilepsy Ascl1 and Dlx2 reprogram reactive glia into GABAergic interneurons in the epileptic hippocampus Induced interneurons establish GABAergic synapses onto dentate granule cells Induced interneurons reduce chronic epileptic activity in the hippocampus
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Affiliation(s)
- Célia Lentini
- Univ Lyon, Université Claude Bernard Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, 69500 Bron, France
| | - Marie d'Orange
- Univ Lyon, Université Claude Bernard Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, 69500 Bron, France
| | - Nicolás Marichal
- Centre for Developmental Neurobiology, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London SE1 1UL, UK; MRC Centre for Neurodevelopmental Disorders, King's College London, London SE1 1UL, UK
| | - Marie-Madeleine Trottmann
- Univ Lyon, Université Claude Bernard Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, 69500 Bron, France
| | - Rory Vignoles
- Univ Lyon, Université Claude Bernard Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, 69500 Bron, France
| | - Louis Foucault
- Univ Lyon, Université Claude Bernard Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, 69500 Bron, France
| | - Charlotte Verrier
- Univ Lyon, Université Claude Bernard Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, 69500 Bron, France
| | - Céline Massera
- Univ Grenoble Alpes, Inserm U1216, Grenoble Institut des Neurosciences, 38000 Grenoble, France
| | - Olivier Raineteau
- Univ Lyon, Université Claude Bernard Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, 69500 Bron, France
| | - Karl-Klaus Conzelmann
- Max von Pettenkofer-Institute Virology, Medical Faculty & Gene Center, Ludwig-Maximilians-University, 81377 Munich, Germany
| | - Sylvie Rival-Gervier
- Univ Lyon, Université Claude Bernard Lyon 1, Inserm, INRAE, Stem Cell and Brain Research Institute U1208, CSC USC1361, 69500 Bron, France
| | - Antoine Depaulis
- Univ Grenoble Alpes, Inserm U1216, Grenoble Institut des Neurosciences, 38000 Grenoble, France
| | - Benedikt Berninger
- Centre for Developmental Neurobiology, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London SE1 1UL, UK; MRC Centre for Neurodevelopmental Disorders, King's College London, London SE1 1UL, UK; Institute of Physiological Chemistry, University Medical Center, Johannes Gutenberg University, 55128 Mainz, Germany
| | - Christophe Heinrich
- Univ Lyon, Université Claude Bernard Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, 69500 Bron, France.
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Dias DO, Kalkitsas J, Kelahmetoglu Y, Estrada CP, Tatarishvili J, Holl D, Jansson L, Banitalebi S, Amiry-Moghaddam M, Ernst A, Huttner HB, Kokaia Z, Lindvall O, Brundin L, Frisén J, Göritz C. Pericyte-derived fibrotic scarring is conserved across diverse central nervous system lesions. Nat Commun 2021; 12:5501. [PMID: 34535655 PMCID: PMC8448846 DOI: 10.1038/s41467-021-25585-5] [Citation(s) in RCA: 78] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 08/17/2021] [Indexed: 12/04/2022] Open
Abstract
Fibrotic scar tissue limits central nervous system regeneration in adult mammals. The extent of fibrotic tissue generation and distribution of stromal cells across different lesions in the brain and spinal cord has not been systematically investigated in mice and humans. Furthermore, it is unknown whether scar-forming stromal cells have the same origin throughout the central nervous system and in different types of lesions. In the current study, we compared fibrotic scarring in human pathological tissue and corresponding mouse models of penetrating and non-penetrating spinal cord injury, traumatic brain injury, ischemic stroke, multiple sclerosis and glioblastoma. We show that the extent and distribution of stromal cells are specific to the type of lesion and, in most cases, similar between mice and humans. Employing in vivo lineage tracing, we report that in all mouse models that develop fibrotic tissue, the primary source of scar-forming fibroblasts is a discrete subset of perivascular cells, termed type A pericytes. Perivascular cells with a type A pericyte marker profile also exist in the human brain and spinal cord. We uncover type A pericyte-derived fibrosis as a conserved mechanism that may be explored as a therapeutic target to improve recovery after central nervous system lesions.
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Affiliation(s)
- David O Dias
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | - Jannis Kalkitsas
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | - Yildiz Kelahmetoglu
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | - Cynthia P Estrada
- Department of Clinical Neuroscience, Karolinska University Hospital, Solna, Sweden
| | | | - Daniel Holl
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | - Linda Jansson
- Lund Stem Cell Center, Lund University, Lund, Sweden
| | - Shervin Banitalebi
- Division of Anatomy, Department of Molecular Medicine, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Mahmood Amiry-Moghaddam
- Division of Anatomy, Department of Molecular Medicine, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Aurélie Ernst
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
- Group Genome Instability in Tumors, German Cancer Research Center, Heidelberg, Germany
| | - Hagen B Huttner
- Department of Neurology, University Hospital Erlangen, Erlangen, Germany
| | - Zaal Kokaia
- Lund Stem Cell Center, Lund University, Lund, Sweden
| | - Olle Lindvall
- Lund Stem Cell Center, Lund University, Lund, Sweden
| | - Lou Brundin
- Department of Clinical Neuroscience, Karolinska University Hospital, Solna, Sweden
| | - Jonas Frisén
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | - Christian Göritz
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden.
- Ming Wai Lau Centre for Reparative Medicine, Stockholm Node, Karolinska Institutet, Stockholm, Sweden.
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Mitterová K, Klobušiaková P, Šejnoha Minsterová A, Kropáčová S, Balážová Z, Točík J, Vaculíková P, Skotáková A, Grmela R, Rektorová I. Impact of cognitive reserve on dance intervention-induced changes in brain plasticity. Sci Rep 2021; 11:18527. [PMID: 34535714 PMCID: PMC8448766 DOI: 10.1038/s41598-021-97323-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 08/10/2021] [Indexed: 02/08/2023] Open
Abstract
Dance is a complex sensorimotor activity with positive effects on physical fitness, cognition, and brain plasticity in the aging population. We explored whether individual levels of cognitive reserve (CR) proxied by education moderate dance intervention (DI)-induced plasticity assessed by resting-state functional connectivity (rs-FC) changes of the sensorimotor network (SMN), and between the dorsal attention network (DAN) and anterior default mode network (aDMN). Our cohort consisted of 99 subjects, randomly assigned to either a DI group who underwent a 6-month intervention (n = 49, Mage = 69.02 ± 5.40) or a control group (n = 50, Mage = 69.37 ± 6.10). Moderation analyses revealed that CR moderated DI-induced increase of the SMN rs-FC with significant changes observed in participants with ≥ 15 years of education (b = 0.05, t(62) = 3.17, p = 0.002). Only DI alone was a significant predictor of the DAN-aDMN crosstalk change (b = 0.06, t(64) = 2.16, p = 0.035). The rs-FC increase in the SMN was correlated with an improved physical fitness measure, and changes in the DAN-aDMN connectivity were linked to better performance on figural fluency. Consistent with the passive CR hypothesis, we observed that CR correlated only with baseline behavioral scores, not their change.
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Affiliation(s)
- Kristína Mitterová
- grid.10267.320000 0001 2194 0956Applied Neuroscience Research Group, Central European Institute of Technology, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic ,grid.10267.320000 0001 2194 0956Faculty of Medicine, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic
| | - Patrícia Klobušiaková
- grid.10267.320000 0001 2194 0956Applied Neuroscience Research Group, Central European Institute of Technology, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic ,grid.10267.320000 0001 2194 0956Faculty of Medicine, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic ,Surgeon General Office of the Slovak Armed Forces, Ul. generála Miloša Vesela 21, 03401 Ružomberok, Slovak Republic
| | - Alžběta Šejnoha Minsterová
- grid.10267.320000 0001 2194 0956Applied Neuroscience Research Group, Central European Institute of Technology, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic ,grid.10267.320000 0001 2194 0956Faculty of Medicine, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic
| | - Sylvie Kropáčová
- grid.10267.320000 0001 2194 0956Applied Neuroscience Research Group, Central European Institute of Technology, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic
| | - Zuzana Balážová
- grid.10267.320000 0001 2194 0956Applied Neuroscience Research Group, Central European Institute of Technology, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic ,grid.10267.320000 0001 2194 0956Faculty of Medicine, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic
| | - Jaroslav Točík
- grid.10267.320000 0001 2194 0956Applied Neuroscience Research Group, Central European Institute of Technology, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic ,grid.10267.320000 0001 2194 0956Faculty of Medicine, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic
| | - Pavlína Vaculíková
- grid.10267.320000 0001 2194 0956Department of Gymnastics and Combatives, Faculty of Sports Studies, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic
| | - Alena Skotáková
- grid.10267.320000 0001 2194 0956Department of Gymnastics and Combatives, Faculty of Sports Studies, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic
| | - Roman Grmela
- grid.10267.320000 0001 2194 0956Department of Health Promotion, Faculty of Sports Studies, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic
| | - Irena Rektorová
- grid.10267.320000 0001 2194 0956Applied Neuroscience Research Group, Central European Institute of Technology, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic ,grid.412752.70000 0004 0608 7557First Department of Neurology, Faculty of Medicine, Masaryk University and St. Anne’s University Hospital, Pekařská 664/53, 65691 Brno, Czech Republic
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Chen JS, Wang HK, Hsu CY, Su YT, Chen JS, Liang CL, Hsieh PCH, Wu CC, Kwan AL. HDAC1 deregulation promotes neuronal loss and deficit of motor function in stroke pathogenesis. Sci Rep 2021; 11:16354. [PMID: 34381129 PMCID: PMC8357973 DOI: 10.1038/s41598-021-95837-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Accepted: 07/23/2021] [Indexed: 02/07/2023] Open
Abstract
Stroke is a common cause of death worldwide and leads to disability and cognitive dysfunction. Ischemic stroke and hemorrhagic stroke are major categories of stroke, accounting for 68% and 32% of strokes, respectively. Each year, 15 million people experience stroke worldwide, and the stroke incidence is rising. Epigenetic modifications regulate gene transcription and play a major role in stroke. Accordingly, histone deacetylase 1 (HDAC1) participates in DNA damage repair and cell survival. However, the mechanisms underlying the role of HDAC1 in stroke pathogenesis are still controversial. Therefore, we investigated the role of HDAC1 in stroke by using a rat model of endothelin-1-induced brain ischemia. Our results revealed that HDAC1 was deregulated following stroke, and its expressional level and enzymatic activity were decreased. We also used MS-275 to inhibit HDAC1 function in rats exposed to ischemic insult. We found that HDAC1 inhibition promoted the infarct volume, neuronal loss, DNA damage, neuronal apoptosis after stroke, and levels of reactive oxygen species and inflammation cytokines. Additionally, HDAC1 inhibition deteriorated the behavioral outcomes of rats with ischemic insult. Overall, our findings demonstrate that HDAC1 participates in ischemic pathogenesis in the brain and possesses potential for use as a therapeutic target.
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Affiliation(s)
- Jui-Sheng Chen
- grid.412019.f0000 0000 9476 5696Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan ,Department of Neurosurgery, E-Da Dachang Hospital, Kaohsiung, Taiwan ,grid.414686.90000 0004 1797 2180Department of Neurosurgery, E-Da Hospital, Kaohsiung, Taiwan ,grid.28665.3f0000 0001 2287 1366Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan ,grid.411447.30000 0004 0637 1806School of Medicine, College of Medicine, I-Shou University, Kaohsiung, Taiwan
| | - Hao-Kuang Wang
- grid.414686.90000 0004 1797 2180Department of Neurosurgery, E-Da Hospital, Kaohsiung, Taiwan ,grid.411447.30000 0004 0637 1806School of Medicine for International Students, College of Medicine, I-Shou University, Kaohsiung, Taiwan
| | - Chien-Yu Hsu
- grid.414686.90000 0004 1797 2180Department of Neurosurgery, E-Da Hospital, Kaohsiung, Taiwan
| | - Yu-Ting Su
- grid.145695.aDepartment of Obstetrics and Gynecology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Jia-Shing Chen
- grid.411447.30000 0004 0637 1806School of Medicine for International Students, College of Medicine, I-Shou University, Kaohsiung, Taiwan
| | - Cheng-Loong Liang
- grid.414686.90000 0004 1797 2180Department of Neurosurgery, E-Da Hospital, Kaohsiung, Taiwan ,grid.411447.30000 0004 0637 1806School of Medicine, College of Medicine, I-Shou University, Kaohsiung, Taiwan
| | - Patrick Ching-Ho Hsieh
- grid.28665.3f0000 0001 2287 1366Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Cheng-Chun Wu
- grid.411447.30000 0004 0637 1806School of Medicine, College of Medicine, I-Shou University, Kaohsiung, Taiwan
| | - Aij-Lie Kwan
- grid.412019.f0000 0000 9476 5696Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan ,grid.412027.20000 0004 0620 9374Department of Neurosurgery, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
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Gervasi NM, Dimtchev A, Clark DM, Dingle M, Pisarchik AV, Nesti LJ. C-terminal domain small phosphatase 1 (CTDSP1) regulates growth factor expression and axonal regeneration in peripheral nerve tissue. Sci Rep 2021; 11:14462. [PMID: 34262056 PMCID: PMC8280205 DOI: 10.1038/s41598-021-92822-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 05/04/2021] [Indexed: 11/09/2022] Open
Abstract
Peripheral Nerve Injury (PNI) represents a major clinical and economic burden. Despite the ability of peripheral neurons to regenerate their axons after an injury, patients are often left with motor and/or sensory disability and may develop chronic pain. Successful regeneration and target organ reinnervation require comprehensive transcriptional changes in both injured neurons and support cells located at the site of injury. The expression of most of the genes required for axon growth and guidance and for synapsis formation is repressed by a single master transcriptional regulator, the Repressor Element 1 Silencing Transcription factor (REST). Sustained increase of REST levels after injury inhibits axon regeneration and leads to chronic pain. As targeting of transcription factors is challenging, we tested whether modulation of REST activity could be achieved through knockdown of carboxy-terminal domain small phosphatase 1 (CTDSP1), the enzyme that stabilizes REST by preventing its targeting to the proteasome. To test whether knockdown of CTDSP1 promotes neurotrophic factor expression in both support cells located at the site of injury and in peripheral neurons, we transfected mesenchymal progenitor cells (MPCs), a type of support cells that are present at high concentrations at the site of injury, and dorsal root ganglion (DRG) neurons with REST or CTDSP1 specific siRNA. We quantified neurotrophic factor expression by RT-qPCR and Western blot, and brain-derived neurotrophic factor (BDNF) release in the cell culture medium by ELISA, and we measured neurite outgrowth of DRG neurons in culture. Our results show that CTDSP1 knockdown promotes neurotrophic factor expression in both DRG neurons and the support cells MPCs, and promotes DRG neuron regeneration. Therapeutics targeting CTDSP1 activity may, therefore, represent a novel epigenetic strategy to promote peripheral nerve regeneration after PNI by promoting the regenerative program repressed by injury-induced increased levels of REST in both neurons and support cells.
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Affiliation(s)
- Noreen M Gervasi
- Laboratory of Clinical and Experimental Orthopaedics, Department of Surgery, Uniformed Services University of Health Sciences, 4801 Rockville Pike, Bethesda, MD, 20889, USA
- Henry M. Jackson Foundation for the Advancement of Military Medicine, 6720A Rockledge Drive, Bethesda, MD, 20817, USA
- Alcamena Stem Cell Therapeutics, 1450 South Rolling Road, Suite 4.069, Halethorpe, MD, 21227, USA
| | - Alexander Dimtchev
- Laboratory of Clinical and Experimental Orthopaedics, Department of Surgery, Uniformed Services University of Health Sciences, 4801 Rockville Pike, Bethesda, MD, 20889, USA
- Henry M. Jackson Foundation for the Advancement of Military Medicine, 6720A Rockledge Drive, Bethesda, MD, 20817, USA
| | - Desraj M Clark
- Laboratory of Clinical and Experimental Orthopaedics, Department of Surgery, Uniformed Services University of Health Sciences, 4801 Rockville Pike, Bethesda, MD, 20889, USA
- Department of Orthopaedics and Rehabilitation, Walter Reed National Military Medical Center, 8901 Rockville Pike, Bethesda, MD, 20889, USA
| | - Marvin Dingle
- Laboratory of Clinical and Experimental Orthopaedics, Department of Surgery, Uniformed Services University of Health Sciences, 4801 Rockville Pike, Bethesda, MD, 20889, USA
- Department of Orthopaedics and Rehabilitation, Walter Reed National Military Medical Center, 8901 Rockville Pike, Bethesda, MD, 20889, USA
| | - Alexander V Pisarchik
- Alcamena Stem Cell Therapeutics, 1450 South Rolling Road, Suite 4.069, Halethorpe, MD, 21227, USA.
| | - Leon J Nesti
- Laboratory of Clinical and Experimental Orthopaedics, Department of Surgery, Uniformed Services University of Health Sciences, 4801 Rockville Pike, Bethesda, MD, 20889, USA.
- Department of Orthopaedics and Rehabilitation, Walter Reed National Military Medical Center, 8901 Rockville Pike, Bethesda, MD, 20889, USA.
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46
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Li F, Lo TY, Miles L, Wang Q, Noristani HN, Li D, Niu J, Trombley S, Goldshteyn JI, Wang C, Wang S, Qiu J, Pogoda K, Mandal K, Brewster M, Rompolas P, He Y, Janmey PA, Thomas GM, Li S, Song Y. The Atr-Chek1 pathway inhibits axon regeneration in response to Piezo-dependent mechanosensation. Nat Commun 2021; 12:3845. [PMID: 34158506 PMCID: PMC8219705 DOI: 10.1038/s41467-021-24131-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 05/25/2021] [Indexed: 02/05/2023] Open
Abstract
Atr is a serine/threonine kinase, known to sense single-stranded DNA breaks and activate the DNA damage checkpoint by phosphorylating Chek1, which inhibits Cdc25, causing cell cycle arrest. This pathway has not been implicated in neuroregeneration. We show that in Drosophila sensory neurons removing Atr or Chek1, or overexpressing Cdc25 promotes regeneration, whereas Atr or Chek1 overexpression, or Cdc25 knockdown impedes regeneration. Inhibiting the Atr-associated checkpoint complex in neurons promotes regeneration and improves synapse/behavioral recovery after CNS injury. Independent of DNA damage, Atr responds to the mechanical stimulus elicited during regeneration, via the mechanosensitive ion channel Piezo and its downstream NO signaling. Sensory neuron-specific knockout of Atr in adult mice, or pharmacological inhibition of Atr-Chek1 in mammalian neurons in vitro and in flies in vivo enhances regeneration. Our findings reveal the Piezo-Atr-Chek1-Cdc25 axis as an evolutionarily conserved inhibitory mechanism for regeneration, and identify potential therapeutic targets for treating nervous system trauma.
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Affiliation(s)
- Feng Li
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Tsz Y Lo
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Leann Miles
- The Graduate Group in Biochemistry and Molecular Biophysics, University of Pennsylvania, Philadelphia, PA, USA
| | - Qin Wang
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Harun N Noristani
- Shriners Hospitals Pediatric Research Center (Center for Neurorehabilitation and Neural Repair), Temple University School of Medicine, Philadelphia, PA, USA
- Department of Anatomy and Cell Biology, Temple University School of Medicine, Philadelphia, PA, USA
| | - Dan Li
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Jingwen Niu
- Shriners Hospitals Pediatric Research Center (Center for Neurorehabilitation and Neural Repair), Temple University School of Medicine, Philadelphia, PA, USA
| | - Shannon Trombley
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Jessica I Goldshteyn
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Chuxi Wang
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Shuchao Wang
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Jingyun Qiu
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Katarzyna Pogoda
- Institute for Medicine and Engineering, University of Pennsylvania, Philadelphia, PA, USA
- Institute of Nuclear Physics, Polish Academy of Sciences, Krakow, Poland
| | - Kalpana Mandal
- Institute for Medicine and Engineering, University of Pennsylvania, Philadelphia, PA, USA
| | - Megan Brewster
- Department of Dermatology, University of Pennsylvania, Philadelphia, PA, USA
| | | | - Ye He
- The City University of New York, Graduate Center - Advanced Science Research Center, Neuroscience Initiative, New York, NY, USA
| | - Paul A Janmey
- Institute for Medicine and Engineering, University of Pennsylvania, Philadelphia, PA, USA
| | - Gareth M Thomas
- Shriners Hospitals Pediatric Research Center (Center for Neurorehabilitation and Neural Repair), Temple University School of Medicine, Philadelphia, PA, USA
- Department of Anatomy and Cell Biology, Temple University School of Medicine, Philadelphia, PA, USA
| | - Shuxin Li
- Shriners Hospitals Pediatric Research Center (Center for Neurorehabilitation and Neural Repair), Temple University School of Medicine, Philadelphia, PA, USA
- Department of Anatomy and Cell Biology, Temple University School of Medicine, Philadelphia, PA, USA
| | - Yuanquan Song
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA.
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA, USA.
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47
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Lima R, Gomes ED, Cibrão JR, Rocha LA, Assunção-Silva RC, Rodrigues CS, Neves-Carvalho A, Monteiro S, Salgado AJ, Silva NA. Levetiracetam treatment leads to functional recovery after thoracic or cervical injuries of the spinal cord. NPJ Regen Med 2021; 6:11. [PMID: 33654068 DOI: 10.1038/s41536-021-00121-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Accepted: 02/01/2021] [Indexed: 01/31/2023] Open
Abstract
Spinal cord injury (SCI) leads to dramatic impairments of motor, sensory, and autonomic functions of affected individuals. Following the primary injury, there is an increased release of glutamate that leads to excitotoxicity and further neuronal death. Therefore, modulating glutamate excitotoxicity seems to be a promising target to promote neuroprotection during the acute phase of the injury. In this study, we evaluated the therapeutic effect of a FDA approved antiepileptic drug (levetiracetam-LEV), known for binding to the synaptic vesicle protein SV2A in the brain and spinal cord. LEV therapy was tested in two models of SCI-one affecting the cervical and other the thoracic level of the spinal cord. The treatment was effective on both SCI models. Treated animals presented significant improvements on gross and fine motor functions. The histological assessment revealed a significant decrease of cavity size, as well as higher neuronal and oligodendrocyte survival on treated animals. Molecular analysis revealed that LEV acts by stabilizing the astrocytes allowing an effective uptake of the excess glutamate from the extracellular space. Overall, our results demonstrate that Levetiracetam may be a promising drug for acute management of SCI.
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48
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Zheng X, Salinas KJ, Velez DXF, Nakayama T, Lin X, Banerjee D, Xu X, Gandhi SP. Host interneurons mediate plasticity reactivated by embryonic inhibitory cell transplantation in mouse visual cortex. Nat Commun 2021; 12:862. [PMID: 33558487 PMCID: PMC7870960 DOI: 10.1038/s41467-021-21097-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 01/07/2021] [Indexed: 11/12/2022] Open
Abstract
The adult brain lacks sensitivity to changes in the sensory environment found in the juvenile brain. The transplantation of embryonic interneurons has been shown to restore juvenile plasticity to the adult host visual cortex. It is unclear whether transplanted interneurons directly mediate the renewed cortical plasticity or whether these cells act indirectly by modifying the host interneuron circuitry. Here we find that the transplant-induced reorganization of mouse host circuits is specifically mediated by Neuregulin (NRG1)/ErbB4 signaling in host parvalbumin (PV) interneurons. Brief visual deprivation reduces the visual activity of host PV interneurons but has negligible effects on the responses of transplanted PV interneurons. Exogenous NRG1 both prevents the deprivation-induced reduction in the visual responses of host PV interneurons and blocks the transplant-induced reorganization of the host circuit. While deletion of ErbB4 receptors from host PV interneurons blocks cortical plasticity in the transplant recipients, deletion of the receptors from the donor PV interneurons does not. Altogether, our results indicate that transplanted embryonic interneurons reactivate cortical plasticity by rejuvenating the function of host PV interneurons.
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Affiliation(s)
- XiaoTing Zheng
- Department of Neurobiology and Behavior, University of California, Irvine, Irvine, CA, 92697-2715, USA
| | - Kirstie J Salinas
- Department of Neurobiology and Behavior, University of California, Irvine, Irvine, CA, 92697-2715, USA
| | - Dario X Figueroa Velez
- Department of Neurobiology and Behavior, University of California, Irvine, Irvine, CA, 92697-2715, USA
| | - Taylor Nakayama
- Department of Neurobiology and Behavior, University of California, Irvine, Irvine, CA, 92697-2715, USA
| | - Xiaoxiao Lin
- Department of Anatomy and Neurobiology, University of California, Irvine, Irvine, CA, 92697-2715, USA
| | - Dhruba Banerjee
- Department of Neurobiology and Behavior, University of California, Irvine, Irvine, CA, 92697-2715, USA
| | - Xiangmin Xu
- Department of Anatomy and Neurobiology, University of California, Irvine, Irvine, CA, 92697-2715, USA
- Department of Biomedical Engineering, University of California, Irvine, Irvine, CA, 92697-2715, USA
- Department of Microbiology and Molecular Genetics, University of California, Irvine, Irvine, CA, 92697-2715, USA
- Center for the Neurobiology of Learning and Memory, University of California, Irvine, Irvine, CA, 92697-2715, USA
| | - Sunil P Gandhi
- Department of Neurobiology and Behavior, University of California, Irvine, Irvine, CA, 92697-2715, USA.
- Center for the Neurobiology of Learning and Memory, University of California, Irvine, Irvine, CA, 92697-2715, USA.
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49
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Dömer P, Kayal J, Janssen-Bienhold U, Kewitz B, Kretschmer T, Heinen C. Rapid and efficient immunomagnetic isolation of endothelial cells from human peripheral nerves. Sci Rep 2021; 11:1951. [PMID: 33479384 PMCID: PMC7820485 DOI: 10.1038/s41598-021-81361-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 01/04/2021] [Indexed: 01/18/2023] Open
Abstract
Endothelial cells (ECs) have gained an increased scientific focus since they were reported to provide guidance for Schwann cells and subsequently following axons after nerve injuries. However, previous protocols for the isolation of nerve-derived ECs from human nerves are ineffective regarding time and yield. Therefore, we established a novel and efficient protocol for the isolation of ECs from human peripheral nerves by means of immunomagnetic CD31-antibody conjugated Dynabeads and assessed the purity of the isolated cells. The easy-to-follow and time-effective isolation method allows the isolation of > 95% pure ECs. The isolated ECs were shown to express highly specific EC marker proteins and revealed functional properties by formation of CD31 and VE-cadherin positive adherens junctions, as well as ZO-1 positive tight-junctions. Moreover, the formation of capillary EC-tubes was observed in-vitro. The novel protocol for the isolation of human nerve-derived ECs allows and simplifies the usage of ECs in research of the human blood-nerve-barrier and peripheral nerve regeneration. Additionally, a potential experimental application of patient-derived nerve ECs in the in-vitro vascularization of artificial nerve grafts is feasible.
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Affiliation(s)
- Patrick Dömer
- Department of Neuroscience, Carl Von Ossietzky University Oldenburg, Carl von Ossietzky Str. 9-11, Oldenburg, Germany.
- Department of Neurosurgery, Evangelisches Krankenhaus, Campus Carl von Ossietzky University Oldenburg, Oldenburg, Germany.
| | - Janine Kayal
- Department of Neuroscience, Carl Von Ossietzky University Oldenburg, Carl von Ossietzky Str. 9-11, Oldenburg, Germany
| | - Ulrike Janssen-Bienhold
- Department of Neuroscience, Carl Von Ossietzky University Oldenburg, Carl von Ossietzky Str. 9-11, Oldenburg, Germany
- Research Center Neurosensory Science, Carl Von Ossietzky University Oldenburg, Oldenburg, Germany
| | - Bettina Kewitz
- Department of Neuroscience, Carl Von Ossietzky University Oldenburg, Carl von Ossietzky Str. 9-11, Oldenburg, Germany
- Department of Neurosurgery, Evangelisches Krankenhaus, Campus Carl von Ossietzky University Oldenburg, Oldenburg, Germany
| | - Thomas Kretschmer
- Department of Neurosurgery and Neurorestauration, Klinikum Klagenfurt Am Wörthersee, Klagenfurt, Austria
| | - Christian Heinen
- Department of Neurosurgery, Evangelisches Krankenhaus, Campus Carl von Ossietzky University Oldenburg, Oldenburg, Germany
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50
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Abstract
Traumatic brain injury (TBI) is one of the leading causes of death among young people, and is increasingly prevalent in the aging population. Survivors of TBI face a spectrum of outcomes from short-term non-incapacitating injuries to long-lasting serious and deteriorating sequelae. TBI is a highly complex condition to treat; many variables can account for the observed heterogeneity in patient outcome. The limited success of neuroprotection strategies in the clinic has led to a new emphasis on neurorestorative approaches. In TBI, it is well recognized clinically that patients with similar lesions, age, and health status often display differences in recovery of function after injury. Despite this heterogeneity of outcomes in TBI, restorative treatment has remained generic. There is now a new emphasis on developing a personalized medicine approach in TBI, and this will require an improved understanding of how genetics impacts on long-term outcomes. Studies in animal model systems indicate clearly that the genetic background plays a role in determining the extent of recovery following an insult. A candidate gene approach in human studies has led to the identification of factors that can influence recovery. Here we review studies of the genetic basis for individual differences in functional recovery in the CNS in animals and man. The application of in vitro modeling with human cells and organoid cultures, along with whole-organism studies, will help to identify genes and networks that account for individual variation in recovery from brain injury, and will point the way towards the development of new therapeutic approaches.
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