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Tian Z, Xu L, Chen Q, Feng R, Lu H, Tan H, Kang J, Wang Y, Yan H. Corrigendum: Treatment of surgical brain injury by immune tolerance induced by peripheral intravenous injection of biotargeting nanoparticles loaded with brain antigens. Front Immunol 2023; 14:1335541. [PMID: 38143755 PMCID: PMC10740370 DOI: 10.3389/fimmu.2023.1335541] [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: 11/09/2023] [Accepted: 11/27/2023] [Indexed: 12/26/2023] Open
Abstract
[This corrects the article DOI: 10.3389/fimmu.2019.00743.].
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Affiliation(s)
- Zhen Tian
- Graduate School of Tianjin Medical University, Tianjin, China
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases, Tianjin, China
| | - Lixia Xu
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases, Tianjin, China
| | - Qian Chen
- Graduate School of Tianjin Medical University, Tianjin, China
| | - Ruoyang Feng
- Graduate School of Tianjin Medical University, Tianjin, China
| | - Hao Lu
- Graduate School of Tianjin Medical University, Tianjin, China
| | - Huajun Tan
- Graduate School of Tianjin Medical University, Tianjin, China
| | - Jianming Kang
- Department of Neurosurgery, Tianjin Huanhu Hospital, Tianjin, China
| | - Yinsong Wang
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), Research Center of Basic Medical Science, School of Pharmacy, Tianjin Medical University, Tianjin, China
| | - Hua Yan
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases, Tianjin, China
- Department of Neurosurgery, Tianjin Huanhu Hospital, Tianjin, China
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Rassul SM, Otsu M, Styles IB, Neely RK, Fulton D. Single-molecule tracking of myelin basic protein during oligodendrocyte differentiation. Biol Imaging 2023; 3:e24. [PMID: 38510175 PMCID: PMC10951920 DOI: 10.1017/s2633903x23000259] [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] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/14/2023] [Accepted: 10/10/2023] [Indexed: 03/22/2024]
Abstract
This study aimed to expand our understanding of myelin basic protein (MBP), a key component of central nervous system myelin, by developing a protocol to track and quantifying individual MBP particles during oligodendrocyte (OL) differentiation. MBP particle directionality, confinement, and diffusion were tracked by rapid TIRF and HILO imaging of Dendra2 tagged MBP in three stages of mouse oligodendroglia: OL precursors, early myelinating OLs, and mature myelinating OLs. The directionality and confinement of MBP particles increased at each stage consistent with progressive transport toward, and recruitment into, emerging myelin structures. Unexpectedly, diffusion data presented a more complex pattern with subpopulations of the most diffusive particles disappearing at the transition between the precursor and early myelinating stage, before reemerging in the membrane sheets of mature OLs. This diversity of particle behaviors, which would be undetectable by conventional ensemble-averaged methods, are consistent with a multifunctional view of MBP involving roles in myelin expansion and compaction.
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Affiliation(s)
- Sayed M. Rassul
- Neuroscience and Ophthalmology Research Group, Institute of Inflammation and Ageing, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
- Physical Sciences of Imaging in the Biomedical Sciences Training Programme, University of Birmingham, Birmingham, UK
| | - Masahiro Otsu
- Neuroscience and Ophthalmology Research Group, Institute of Inflammation and Ageing, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
- Braizon Therapeutics, Inc., Kanagawa, Japan
| | - Iain B. Styles
- School of Electronics, Electrical Engineering and Computer Science, Queen’s University Belfast, Belfast, UK
| | - Robert K. Neely
- School of Chemistry, University of Birmingham, Birmingham, UK
| | - Daniel Fulton
- Neuroscience and Ophthalmology Research Group, Institute of Inflammation and Ageing, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
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郭 志, 王 志, 曾 琳, 纪 雪. [Effects of propofol on myelin basic protein expression in zebrafish at different developmental stages]. Nan Fang Yi Ke Da Xue Xue Bao 2023; 43:1810-1814. [PMID: 37933659 PMCID: PMC10630208 DOI: 10.12122/j.issn.1673-4254.2023.10.21] [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] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Indexed: 11/08/2023]
Abstract
OBJECTIVE To observe the effect of propofol on the expression of myelin basic protein (MBP) in developing zebrafish and explore the possible mechanisms. METHODS A total of 180 zebrafish embryos at 6-48 h post-fertilization were randomly allocated into 3 equal groups and raised in fresh water (control group), water containing dimethyl sulfoxide (DMSO group) and water containing 30 μg/mL propofol (propofol group). On 3, 4, 5, 6, 7, 10 d post-fertilization, the juvenile fish were collected for detection of mRNA and protein expressions of MBP using RT-qPCR and Western blotting. TUNEL assay and immunofluorescence assay were used to detect apoptosis of the oligodendrocytes of the fish at 3 d post-fertilization; RT-qPCR and Western blotting were performed to detect the expressions of apoptosis-related factors caspase-8, caspase-9 and caspase-3. RESULTS Compared with the control group, the fish with propofol exposure showed significantly decreased mRNA and protein expression of MBP at 3-7 d post-fertilization (P<0.05) with increased apoptosis of the oligodendrocytes and upregulated expressions of caspase-8, caspase-9 and caspase-3 at both the mRNA and protein levels. CONCLUSION Propofol persistently inhibits MBP expression in developing zebrafish within a short term possibly by mediating apoptosis of the oligodendrocytes.
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Affiliation(s)
- 志华 郭
- />南方医科大学附属广东省人民医院(广东省医学科学院)麻醉科, 广东 广州 510080Department of Anesthesiology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - 志鹏 王
- />南方医科大学附属广东省人民医院(广东省医学科学院)麻醉科, 广东 广州 510080Department of Anesthesiology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - 琳玲 曾
- />南方医科大学附属广东省人民医院(广东省医学科学院)麻醉科, 广东 广州 510080Department of Anesthesiology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - 雪霞 纪
- />南方医科大学附属广东省人民医院(广东省医学科学院)麻醉科, 广东 广州 510080Department of Anesthesiology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
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Levchuk LA, Roschina OV, Mikhalitskaya EV, Epimakhova EV, Simutkin GG, Bokhan NA, Ivanova SA. Serum Levels of S100B Protein and Myelin Basic Protein as a Potential Biomarkers of Recurrent Depressive Disorders. J Pers Med 2023; 13:1423. [PMID: 37763190 PMCID: PMC10532562 DOI: 10.3390/jpm13091423] [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: 08/15/2023] [Revised: 09/13/2023] [Accepted: 09/19/2023] [Indexed: 09/29/2023] Open
Abstract
Nowadays, nervous tissue damage proteins in serum are considered promising drug targets and biomarkers of Mood Disorders. In a cross-sectional naturalistic study, the S100B, MBP and GFAP levels in the blood serum were compared between two diagnostic groups (patients with Depressive Episode (DE, n = 28) and patients with Recurrent Depressive Disorder (RDD, n = 21)), and healthy controls (n = 25). The diagnostic value of serum markers was assessed by ROC analysis. In the DE group, we did not find changed levels of S100B, MBP and GFAP compared with controls. In the RDD group, we found decreased S100B level (p = 0.011) and increased MBP level (p = 0.015) in comparison to those in healthy controls. Provided ROC analysis indicates that MBP contributes to the development of a DE (AUC = 0.676; 95%Cl 0.525-0.826; p = 0.028), and S100B and MBP have a significant effect on the development of RDD (AUC = 0.732; 95%Cl 0.560-0.903; p = 0.013 and AUC = 0.712; 95%Cl 0.557-0.867; p = 0.015, correspondingly). The study of serum markers of nervous tissue damage in patients with a current DE indicates signs of disintegration of structural and functional relationships, dysfunction of gliotransmission, and impaired secretion of neurospecific proteins. Modified functions of astrocytes and oligodendrocytes are implicated in the pathophysiology of RDD.
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Affiliation(s)
- Lyudmila A. Levchuk
- Mental Health Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk 634014, Russia; (O.V.R.); (E.V.M.); (E.V.E.); (G.G.S.); (N.A.B.)
| | - Olga V. Roschina
- Mental Health Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk 634014, Russia; (O.V.R.); (E.V.M.); (E.V.E.); (G.G.S.); (N.A.B.)
| | - Ekaterina V. Mikhalitskaya
- Mental Health Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk 634014, Russia; (O.V.R.); (E.V.M.); (E.V.E.); (G.G.S.); (N.A.B.)
| | - Elena V. Epimakhova
- Mental Health Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk 634014, Russia; (O.V.R.); (E.V.M.); (E.V.E.); (G.G.S.); (N.A.B.)
| | - German G. Simutkin
- Mental Health Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk 634014, Russia; (O.V.R.); (E.V.M.); (E.V.E.); (G.G.S.); (N.A.B.)
| | - Nikolay A. Bokhan
- Mental Health Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk 634014, Russia; (O.V.R.); (E.V.M.); (E.V.E.); (G.G.S.); (N.A.B.)
- Psychiatry, Addictology and Psychotherapy Department, Siberian State Medical University, Tomsk 634050, Russia
| | - Svetlana A. Ivanova
- Mental Health Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk 634014, Russia; (O.V.R.); (E.V.M.); (E.V.E.); (G.G.S.); (N.A.B.)
- Psychiatry, Addictology and Psychotherapy Department, Siberian State Medical University, Tomsk 634050, Russia
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Abstract
Piezo1 is a mechanically-gated calcium channel. Recent studies have shown that Piezo1, a mechanically-gated calcium channel, can attenuate both psychosine- and lipopolysaccharide-induced demyelination. Because oligodendrocyte damage and demyelination occur in intracerebral hemorrhage, in this study, we investigated the role of Piezo1 in intracerebral hemorrhage. We established a mouse model of cerebral hemorrhage by injecting autologous blood into the right basal ganglia and found that Piezo1 was largely expressed soon (within 48 hours) after intracerebral hemorrhage, primarily in oligodendrocytes. Intraperitoneal injection of Dooku1 to inhibit Piezo1 resulted in marked alleviation of brain edema, myelin sheath loss, and degeneration in injured tissue, a substantial reduction in oligodendrocyte apoptosis, and a significant improvement in neurological function. In addition, we found that Dooku1-mediated Piezo1 suppression reduced intracellular endoplasmic reticulum stress and cell apoptosis through the PERK-ATF4-CHOP and inositol-requiring enzyme 1 signaling pathway. These findings suggest that Piezo1 is a potential therapeutic target for intracerebral hemorrhage, as its suppression reduces intracellular endoplasmic reticulum stress and cell apoptosis and protects the myelin sheath, thereby improving neuronal function after intracerebral hemorrhage.
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Affiliation(s)
- Jie Qu
- Department of Emergency, The Sixth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Hang-Fan Zong
- The Second Medical Center & National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing, China
| | - Yi Shan
- Department of Emergency, The Sixth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Shan-Chun Zhang
- Department of Neurology, The Second Medical Center & National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing, China
| | - Wei-Ping Guan
- Department of Neurology, The Second Medical Center & National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing, China
| | - Yang Yang
- Department of Neurosurgery and State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Heng-Li Zhao
- Department of Neurology, The Second Medical Center & National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing, China
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Kamaeva DA, Kazantseva DV, Boiko AS, Mednova IA, Smirnova LP, Kornetova EG, Ivanova SA. The Influence of Antipsychotic Treatment on the Activity of Abzymes Targeting Myelin and Levels of Inflammation Markers in Patients with Schizophrenia. Biomedicines 2023; 11:biomedicines11041179. [PMID: 37189796 DOI: 10.3390/biomedicines11041179] [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: 02/28/2023] [Revised: 04/12/2023] [Accepted: 04/13/2023] [Indexed: 05/17/2023] Open
Abstract
Catalytic antibodies, or abzymes, are capable of not only binding but also hydrolyzing various proteins. Previously, an increase in the level of myelin basic protein (MBP)-hydrolyzing activity of antibodies was shown in patients with a number of neurological and mental disorders, including schizophrenia. Furthermore, antipsychotic therapy is known to induce a change in cytokine levels in patients with schizophrenia, which affects regulation of the immune response and inflammatory status. This study investigated the influence of typical and atypical antipsychotics on catalytic antibody activity and the 10 major pro- and anti-inflammatory serum cytokine levels. The study included 40 patients with schizophrenia: 15 treated with first-generation antipsychotics and 25 treated with atypical antipsychotics for 6 weeks. It was found that treatment with atypical antipsychotics changed the levels of some pro-inflammatory cytokines. Antipsychotic therapy also caused a significant decrease in MBP-hydrolyzing activity in patients with schizophrenia (p = 0.0002), and associations of catalytic activity with interleukins were observed.
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Affiliation(s)
- Daria A Kamaeva
- Mental Health Research Institute, Tomsk National Research Medical Center of the Russian Academy of Sciences, Aleutskaya Str. 4, Tomsk 634014, Russia
| | - Daria V Kazantseva
- Mental Health Research Institute, Tomsk National Research Medical Center of the Russian Academy of Sciences, Aleutskaya Str. 4, Tomsk 634014, Russia
| | - Anastasiia S Boiko
- Mental Health Research Institute, Tomsk National Research Medical Center of the Russian Academy of Sciences, Aleutskaya Str. 4, Tomsk 634014, Russia
| | - Irina A Mednova
- Mental Health Research Institute, Tomsk National Research Medical Center of the Russian Academy of Sciences, Aleutskaya Str. 4, Tomsk 634014, Russia
| | - Liudmila P Smirnova
- Mental Health Research Institute, Tomsk National Research Medical Center of the Russian Academy of Sciences, Aleutskaya Str. 4, Tomsk 634014, Russia
| | - Elena G Kornetova
- Mental Health Research Institute, Tomsk National Research Medical Center of the Russian Academy of Sciences, Aleutskaya Str. 4, Tomsk 634014, Russia
| | - Svetlana A Ivanova
- Mental Health Research Institute, Tomsk National Research Medical Center of the Russian Academy of Sciences, Aleutskaya Str. 4, Tomsk 634014, Russia
- Department of Psychiatry, Addictology and Psychotherapy, Siberian State Medical University, Moskovsky Trakt, 2, Tomsk 634050, Russia
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Liu P, Zhang K, Tong C, Liu T, Zheng J. Progesterone alleviates esketamine-induced hypomyelination via PI3K/Akt signaling pathway in the developing rat brain. Biotechnol Genet Eng Rev 2023:1-16. [PMID: 36946765 DOI: 10.1080/02648725.2023.2193058] [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] [Indexed: 03/23/2023]
Abstract
The neurodevelopmental toxicity of anesthetics has been confirmed repeatedly, and esketamine is now widely used in pediatric surgeries. Oligodendrocyte precursor cells (OPCs) evolved into mature oligodendrocytes (OLs) and formed myeline sheath during the early brain development. In this study, we investigated whether esketamine exposure interrupted development of OPCs and induced hypomyelination in rats. Further we explored the roles of PI3K/Akt phosphorylation in OPCs development and myelination. Sprague Dawley rats with different ages (postnatal day (P) 1, 3, 7 and 12) were exposed to 40mg/kg esketamine. Progesterone treatment was given (16 mg/kg per day for 3 days) 24 h after esketamine exposure via the intraperitoneal route. Corpus callosum tissues were collected at P8 or P14 for western blot and immunofluorescence analyses. Esketamine exposure at P7 and P12 significantly reduced myelin basic protein (MBP) expression and CC1+ OLs number in corpus callosum. Esketamine exposure at P7 not only aggravated the mature OLs apoptosis, also decreased the OPCs proliferation and differentiation, which was related with dephosphorylation of PI3K/Akt. Progesterone was able to promote OPCs differentiation and ameliorate esketamine-induced hypomyelination by enhancing PI3K/Akt phosphorylation. Stage-dependent abnormality of OPCs/OLs after esketamine leads to the esketamine-induced hypomyelination. Esketamine interrupted OPCs evolution via PI3K/Akt signaling pathway, which can be ameliorated by progesterone.
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Affiliation(s)
- Peiwen Liu
- Department of Anesthesiology, Shanghai Children's Medical Center & National Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Kan Zhang
- Department of Anesthesiology, Shanghai Children's Medical Center & National Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Chaoyang Tong
- Department of Anesthesiology, Shanghai Children's Medical Center & National Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Ting Liu
- Department of Anesthesiology, Shanghai Children's Medical Center & National Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jijian Zheng
- Department of Anesthesiology, Shanghai Children's Medical Center & National Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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Smirnova EV, Rakitina TV, Ziganshin RH, Saratov GA, Arapidi GP, Belogurov AA, Kudriaeva AA. Identification of Myelin Basic Protein Proximity Interactome Using TurboID Labeling Proteomics. Cells 2023; 12:cells12060944. [PMID: 36980286 PMCID: PMC10047773 DOI: 10.3390/cells12060944] [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: 01/26/2023] [Revised: 03/14/2023] [Accepted: 03/16/2023] [Indexed: 03/30/2023] Open
Abstract
Myelin basic protein (MBP) is one of the key structural elements of the myelin sheath and has autoantigenic properties in multiple sclerosis (MS). Its intracellular interaction network is still partially deconvoluted due to the unfolded structure, abnormally basic charge, and specific cellular localization. Here we used the fusion protein of MBP with TurboID, an engineered biotin ligase that uses ATP to convert biotin to reactive biotin-AMP that covalently attaches to nearby proteins, to determine MBP interactome. Despite evident benefits, the proximity labeling proteomics technique generates high background noise, especially in the case of proteins tending to semi-specific interactions. In order to recognize unique MBP partners, we additionally mapped protein interaction networks for deaminated MBP variant and cyclin-dependent kinase inhibitor 1 (p21), mimicking MBP in terms of natively unfolded state, size and basic amino acid clusters. We found that in the plasma membrane region, MBP is colocalized with adhesion proteins occludin and myelin protein zero-like protein 1, solute carrier family transporters ZIP6 and SNAT1, Eph receptors ligand Ephrin-B1, and structural components of the vesicle transport machinery-synaptosomal-associated protein 23 (SNAP23), vesicle-associated membrane protein 3 (VAMP3), protein transport protein hSec23B and cytoplasmic dynein 1 heavy chain 1. We also detected that MBP potentially interacts with proteins involved in Fe2+ and lipid metabolism, namely, ganglioside GM2 activator protein, long-chain-fatty-acid-CoA ligase 4 (ACSL4), NADH-cytochrome b5 reductase 1 (CYB5R1) and metalloreductase STEAP3. Assuming the emerging role of ferroptosis and vesicle cargo docking in the development of autoimmune neurodegeneration, MBP may recruit and regulate the activity of these processes, thus, having a more inclusive role in the integrity of the myelin sheath.
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Affiliation(s)
- Evgeniya V Smirnova
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
| | - Tatiana V Rakitina
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
| | - Rustam H Ziganshin
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
| | - George A Saratov
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
- Phystech School of Biological and Medical Physics, Moscow Institute of Physics and Technology (National Research University), 141701 Dolgoprudny, Russia
| | - Georgij P Arapidi
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
- Phystech School of Biological and Medical Physics, Moscow Institute of Physics and Technology (National Research University), 141701 Dolgoprudny, Russia
- Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, 119435 Moscow, Russia
| | - Alexey A Belogurov
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
- Department of Biological Chemistry, Evdokimov Moscow State University of Medicine and Dentistry, Ministry of Health of Russian Federation, 127473 Moscow, Russia
| | - Anna A Kudriaeva
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
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de Carvalho Borges B, Meng X, Long P, Kanold PO, Corfas G. Loss of oligodendrocyte ErbB receptor signaling leads to hypomyelination, reduced density of parvalbumin-expressing interneurons, and inhibitory function in the auditory cortex. Glia 2023; 71:187-204. [PMID: 36052476 PMCID: PMC9771935 DOI: 10.1002/glia.24266] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 08/18/2022] [Accepted: 08/19/2022] [Indexed: 12/24/2022]
Abstract
For a long time, myelin was thought to be restricted to excitatory neurons, and studies on dysmyelination focused primarily on excitatory cells. Recent evidence showed that axons of inhibitory neurons in the neocortex are also myelinated, but the role of myelin on inhibitory circuits remains unknown. Here we studied the impact of mild hypomyelination on both excitatory and inhibitory connectivity in the primary auditory cortex (A1) with well-characterized mouse models of hypomyelination due to loss of oligodendrocyte ErbB receptor signaling. Using laser-scanning photostimulation, we found that mice with mild hypomyelination have reduced functional inhibitory connections to A1 L2/3 neurons without changes in excitatory connections, resulting in altered excitatory/inhibitory balance. These effects are not associated with altered expression of GABAergic and glutamatergic synaptic components, but with reduced density of parvalbumin-positive (PV+ ) neurons, axons, and synaptic terminals, which reflect reduced PV expression by interneurons rather than PV+ neuronal loss. While immunostaining shows that hypomyelination occurs in both PV+ and PV- axons, there is a strong correlation between MBP and PV expression, suggesting that myelination influences PV expression. Together, the results indicate that mild hypomyelination impacts A1 neuronal networks, reducing inhibitory activity, and shifting networks towards excitation.
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Affiliation(s)
- Beatriz de Carvalho Borges
- Kresge Hearing Research Institute - Department of Otolaryngology Head and Neck Surgery, University of Michigan, Ann Arbor, MI
| | - Xiangying Meng
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD 21205,Department of Biology, University of Maryland, College Park, MD 20742
| | - Patrick Long
- Kresge Hearing Research Institute - Department of Otolaryngology Head and Neck Surgery, University of Michigan, Ann Arbor, MI
| | - Patrick Oliver Kanold
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD 21205,Department of Biology, University of Maryland, College Park, MD 20742
| | - Gabriel Corfas
- Kresge Hearing Research Institute - Department of Otolaryngology Head and Neck Surgery, University of Michigan, Ann Arbor, MI
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Saratov GA, Vladimirov VI, Novoselov AL, Ziganshin RH, Chen G, Baymukhametov TN, Konevega AL, Belogurov AA, Kudriaeva AA. Myelin Basic Protein Fragmentation by Engineered Human Proteasomes with Different Catalytic Phenotypes Revealed Direct Peptide Ligands of MS-Associated and Protective HLA Class I Molecules. Int J Mol Sci 2023; 24:ijms24032091. [PMID: 36768413 PMCID: PMC9917034 DOI: 10.3390/ijms24032091] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 01/17/2023] [Accepted: 01/17/2023] [Indexed: 01/21/2023] Open
Abstract
Proteasomes exist in mammalian cells in multiple combinatorial variants due to the diverse regulatory particles and exchange of catalytic subunits. Here, using biotin carboxyl carrier domain of transcarboxylase from Propionibacterium shermanii fused with different proteasome subunits of catalytic and regulatory particles, we report comprehensive characterization of highly homogenous one-step purified human constitutive and immune 20S and 26S/30S proteasomes. Hydrolysis of a multiple sclerosis (MS) autoantigen, myelin basic protein (MBP), by engineered human proteasomes with different catalytic phenotypes, revealed that peptides which may be directly loaded on the HLA class I molecules are produced mainly by immunoproteasomes. We detected at least five MBP immunodominant core regions, namely, LPRHRDTGIL, SLPQKSHGR, QDENPVVHFF, KGRGLSLSRF and GYGGRASDY. All peptides, except QDENPVVHFF, which originates from the encephalitogenic MBP part, were associated with HLA I alleles considered to increase MS risk. Prediction of the affinity of HLA class I to this peptide demonstrated that MS-protective HLA-A*44 and -B*35 molecules are high-affinity binders, whereas MS-associated HLA-A*23, -A*24, -A*26 and -B*51 molecules tend to have moderate to low affinity. The HLA-A*44 molecules may bind QDENPVVHFF and its deamidated form in several registers with unprecedently high affinity, probably linking its distinct protective phenotype with thymic depletion of the repertoire of autoreactive cytotoxic T cells or induction of CD8+ regulatory T cells, specific to the encephalitogenic MBP peptide.
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Affiliation(s)
- George A. Saratov
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
- Phystech School of Biological and Medical Physics, Moscow Institute of Physics and Technology (National Research University), 141701 Dolgoprudny, Russia
| | - Vasiliy I. Vladimirov
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
| | - Alexey L. Novoselov
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
| | - Rustam H. Ziganshin
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
| | - Guo Chen
- School of Biopharmacy, China Pharmaceutical University, Nanjing 211198, China
| | | | - Andrey L. Konevega
- National Research Center, “Kurchatov Institute”, 123182 Moscow, Russia
- Institute of Biomedical Systems and Biotechnologies, Peter the Great St. Petersburg Polytechnic University, 195251 St. Petersburg, Russia
- Petersburg Nuclear Physics Institute Named by B.P. Konstantinov of National Research Centre, Kurchatov Institute, 188300 Gatchina, Russia
| | - Alexey A. Belogurov
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
- Department of Biological Chemistry, Ministry of Health of Russian Federation, Evdokimov Moscow State University of Medicine and Dentistry, 127473 Moscow, Russia
- Correspondence: (A.A.B.J.); (A.A.K.); Tel.: +7-495-3352288 (A.A.B.J. & A.A.K.)
| | - Anna A. Kudriaeva
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
- Correspondence: (A.A.B.J.); (A.A.K.); Tel.: +7-495-3352288 (A.A.B.J. & A.A.K.)
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11
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Montoya-García R, Fernández-Vargas V, Albor-Martínez KN, Martínez-Martínez A, Hernández-Jasso I, Quintanar-Stephano A, Calderón-Vallejo D, Quintanar JL. Analysis of hippocampus in rats with acute brain ischemia-reperfusion injury treated with leuprolide acetate, an agonist of GnRH. Restor Neurol Neurosci 2023; 41:83-89. [PMID: 37355916 DOI: 10.3233/rnn-221286] [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] [Indexed: 06/26/2023]
Abstract
BACKGROUND The hippocampus is highly vulnerable to damage in the brain ischemia-reperfusion injury model. Leuprolide acetate has been shown to promote neurological recovery after injury in various regions of the central nervous system. OBJECTIVE The objective of this study was to assess the histology of the hippocampus and the expression of neuronal recovery markers, specifically the 200 kDa neurofilaments and the myelin basic protein, in rats with brain ischemia-reperfusion injury treated with leuprolide acetate. METHODS The rats were divided into three groups: Sham, ischemia-reperfusion with saline solution, and ischemia-reperfusion treated with leuprolide acetate. Coronal brain slices were obtained and stained with hematoxylin-eosin. The histological analysis involved quantifying the number of neurons in the hippocampal regions CA1, CA3 and DG. The myelin basic protein and neurofilaments were quantified using western blot. RESULTS The number of neurons in CA1 and DG was significantly higher in the leuprolide acetate group compared to the untreated group. Additionally, the expression of neurofilament and myelin basic protein markers was significantly increased in rats treated with leuprolide acetate compared to the untreated rats. CONCLUSIONS Leuprolide acetate promotes the recovery of hippocampal neurons in an acute brain ischemia-reperfusion injury model. These findings suggest that leuprolide acetate could be a potential therapeutic intervention for reversing damage in hippocampal ischemic lesions.
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Affiliation(s)
- Rosario Montoya-García
- Department of Physiology and Pharmacology, Center of Basic Sciences, Universidad Autónoma de Aguascalientes, México
| | - Valeria Fernández-Vargas
- Department of Physiology and Pharmacology, Center of Basic Sciences, Universidad Autónoma de Aguascalientes, México
| | - Karla Nalini Albor-Martínez
- Department of Physiology and Pharmacology, Center of Basic Sciences, Universidad Autónoma de Aguascalientes, México
| | - Alicia Martínez-Martínez
- Department of Physiology and Pharmacology, Center of Basic Sciences, Universidad Autónoma de Aguascalientes, México
| | - Irma Hernández-Jasso
- Department of Physiology and Pharmacology, Center of Basic Sciences, Universidad Autónoma de Aguascalientes, México
| | - Andrés Quintanar-Stephano
- Department of Physiology and Pharmacology, Center of Basic Sciences, Universidad Autónoma de Aguascalientes, México
| | - Denisse Calderón-Vallejo
- Department of Physiology and Pharmacology, Center of Basic Sciences, Universidad Autónoma de Aguascalientes, México
| | - J Luis Quintanar
- Department of Physiology and Pharmacology, Center of Basic Sciences, Universidad Autónoma de Aguascalientes, México
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12
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Song W, Hoppe G, Hanna D, DeSilva TM, Sears JE. Hyperoxia Induced Hypomyelination. Biomedicines 2022; 11:37. [PMID: 36672545 PMCID: PMC9855863 DOI: 10.3390/biomedicines11010037] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 12/09/2022] [Accepted: 12/13/2022] [Indexed: 12/28/2022] Open
Abstract
We asked whether hyperoxia might induce hypomyelination of the corpus callosum, clinically described as periventricular leukomalacia (PVL) of the severely preterm infant. Mouse pups and their nursing dams were placed in 80% oxygen from P4-P8, then removed to room air until P11. Corpus callosal sections were probed myelin immunofluorescence, tested for myelin basic protein concentration by Western blot, and both glial fibrillary acidic protein levels and apoptosis quantified. Density of corpus callosal capillaries were measured after lectin staining and hypoxia measured by Hypoxyprobe. Numbers of oligodendrocytes were quantified by immunohistochemistry. We next used hypoxiamimesis as a surrogate to hypoxia by comparing cerebral hypoxia inducible factor (HIF) stabilization to hepatic HIF stabilization. Hyperoxia induced hypomyelination and a reduction of corpus callosal capillaries. Hyperoxia decreased numbers of oligodendrocytes with an increase in corpus callosal fibrosis and apoptosis. Cerebral hypoxiamimesis induced hypomyelination whereas hepatic hypoxiamimesis alone increased myelination, oligodendrocyte numbers, and corpus callosal capillary density. Hepatic HIF-1 dependence on myelination was confirmed using the cre/lox hepatic HIF-1 knockout. These findings suggest that hyperoxia can induce hypomyelination through vasoobliteration and subsequent ischemia, adding a potential oxygen induced mechanism to the diverse causes of periventricular leukomalacia of the severely preterm infant. Targeting hepatic HIF-1 alone led to increased myelination.
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Affiliation(s)
- Weilin Song
- Department of Ophthalmic Research, Cole Eye Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195, USA
- Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, 9500 Euclid Avenue, Cleveland, OH 44195, USA
| | - George Hoppe
- Department of Ophthalmic Research, Cole Eye Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195, USA
| | - Demiana Hanna
- Department of Ophthalmic Research, Cole Eye Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195, USA
| | - Tara M. DeSilva
- Department of Neurosciences, Lerner Research Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195, USA
| | - Jonathan E. Sears
- Department of Ophthalmic Research, Cole Eye Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195, USA
- Department of Cardiovascular and Metabolic Sciences, Lerner Research Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195, USA
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13
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Kowalczyk M, Panasiuk-Kowalczyk A, Stadnik A, Guz M, Cybulski M, Jeleniewicz W, Stepulak A, Kwiatosz-Muc M. Dexmedetomidine Increases MMP-12 and MBP Concentrations after Coronary Artery Bypass Graft Surgery with Extracorporeal Circulation Anaesthesia without Impacting Cognitive Function: A Randomised Control Trial. Int J Environ Res Public Health 2022; 19:16512. [PMID: 36554397 PMCID: PMC9778911 DOI: 10.3390/ijerph192416512] [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] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 12/02/2022] [Accepted: 12/07/2022] [Indexed: 06/17/2023]
Abstract
Postoperative neurological deficits remain a concern for patients undergoing cardiac surgeries. Even minor injuries can lead to neurocognitive decline (i.e., postoperative cognitive dysfunction). Dexmedetomidine may be beneficial given its reported neuroprotective effect. We aimed to investigate the effects of dexmedetomidine on brain injury during cardiac surgery anaesthesia. This prospective observational study analysed data for 46 patients who underwent coronary artery bypass graft surgery with extracorporeal circulation between August 2018 and March 2019. The patients were divided into two groups: control (CON) with typical anaesthesia and dexmedetomidine (DEX) with dexmedetomidine infusion. Concentrations of the biomarkers matrix metalloproteinase-12 (MMP-12) and myelin basic protein (MBP) were measured preoperatively and at 24 and 72 h postoperatively. Cognitive evaluations were performed preoperatively, at discharge, and 3 months after discharge using Addenbrooke's Cognitive Examination version III (ACE-III). The primary endpoint was the ACE-III score at discharge. Increased MMP-12 and MBP concentrations were observed in the DEX group 24 and 72 h postoperatively. No significant differences in ACE-III scores were observed between the groups at discharge; however, the values were increased when compared with initial values after 3 months (p = 0.000). The current results indicate that the administration of dexmedetomidine as an adjuvant to anaesthesia can increase MMP-12 and MBP levels without effects on neurocognitive outcomes at discharge and 3 months postoperatively.
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Affiliation(s)
- Michał Kowalczyk
- 1st Department of Anaesthesiology and Intensive Care, Medical University of Lublin, ul. Jaczewskiego 8, 20-954 Lublin, Poland
| | - Anna Panasiuk-Kowalczyk
- 1st Department of Anaesthesiology and Intensive Care, Medical University of Lublin, ul. Jaczewskiego 8, 20-954 Lublin, Poland
| | - Adam Stadnik
- Department of Cardiac Surgery, Medical University of Lublin, ul. Jaczewskiego 8, 20-954 Lublin, Poland
| | - Małgorzata Guz
- Department of Biochemistry and Molecular Biology, Medical University of Lublin, ul. Chodźki 1, 20-093 Lublin, Poland
| | - Marek Cybulski
- Department of Biochemistry and Molecular Biology, Medical University of Lublin, ul. Chodźki 1, 20-093 Lublin, Poland
| | - Witold Jeleniewicz
- Department of Biochemistry and Molecular Biology, Medical University of Lublin, ul. Chodźki 1, 20-093 Lublin, Poland
| | - Andrzej Stepulak
- Department of Biochemistry and Molecular Biology, Medical University of Lublin, ul. Chodźki 1, 20-093 Lublin, Poland
| | - Magdalena Kwiatosz-Muc
- 1st Department of Anaesthesiology and Intensive Care, Medical University of Lublin, ul. Jaczewskiego 8, 20-954 Lublin, Poland
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14
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Umesh M, Singaravelu V, Daulatabad V, Kamble P, Singhal A, John NA, John J. An overview of prognostic value of neurologic and cardiac biomarkers in patients with COVID-19 sequelae. Horm Mol Biol Clin Investig 2022; 43:475-484. [PMID: 35728088 DOI: 10.1515/hmbci-2022-0015] [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: 01/27/2022] [Accepted: 04/08/2022] [Indexed: 01/08/2023]
Abstract
Many studies conducted after the pandemic period revealed that, while COVID-19 primarily injured the lungs, it also affects other organs in the form of cardiovascular complications, metabolic derangements, renal damage, and so on. Although we know that inflammatory cascades, complement activation, and pro-inflammatory cytokines are all involved in vasculitic processes that cause organ damage, we do not know the exact mechanism of complications such as acute respiratory distress syndrome (ARDS), cardiovascular ischemia, deep vein thrombosis, pulmonary thromboembolism, and brain injuries (embolism) that are frequently observed in COVID 19. The currently available biomarkers do not predict the severity of the aforementioned complications. As a result, more specific biomarkers such as serum calcium binding protein (S100B), glial fibrillary acid protein (GFAP), myelin basic protein (MBP), neuron-specific enolase (NSE), hs-TNI, (highly sensitive cardiac troponin) - HBDH, (Hydroxybutyrate Dehydrogenase), CK-MB (creatine kinase myocardial band), ST2 (suppression of tumorigenicity 2) are in need for early detection & improved clinical outcome.
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Affiliation(s)
- Madhusudhan Umesh
- Department of Physiology, All India Institute of Medical Sciences, Bibinagar, Hyderabad, Telangana, India
| | - Vidya Singaravelu
- Department of Pediatrics, Malla Reddy Institute of Medical Sciences, Hyderabad, Telangana, India
| | | | - Prafull Kamble
- Department of Physiology, All India Institute of Medical Sciences, Bibinagar, Hyderabad, Telangana, India
| | - Anish Singhal
- Department of Physiology, All India Institute of Medical Sciences, Bibinagar, Hyderabad, Telangana, India
| | - Nitin Ashok John
- Department of Physiology, All India Institute of Medical Sciences, Bibinagar, Hyderabad, Telangana, India
| | - Jyoti John
- Department of Biochemistry, All India Institute of Medical Sciences, Nagpur, Maharashtra, India
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15
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Hokama H, Sakamoto Y, Hayashi T, Hatake S, Takahashi M, Kodera H, Kutsuna A, Nito C, Nakane S, Nagayama H, Takahashi T, Kimura K. FLAMES with Elevated Myelin Basic Protein Followed by Myelitis. Intern Med 2022; 61:3585-3588. [PMID: 35527028 PMCID: PMC9790785 DOI: 10.2169/internalmedicine.9439-22] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
The pathophysiology of unilateral cortical fluid-attenuated inversion recovery (FLAIR)-hyperintense lesions in anti-myelin oligodendrocyte glycoprotein (MOG)-associated encephalitis with seizures (FLAMES) is unclear. A 26-year-old man was referred because of a seizure. FLAIR showed an increased signal intensity and swelling of the right frontal cortex. His symptoms and imaging abnormalities were improved after intravenous methylprednisolone therapy. MOG antibody was detected both in serum and cerebrospinal fluid (CSF). Therefore, the patient was diagnosed with FLAMES. Myelin basic protein (MBP) was elevated in CSF. The high MBP value in the CSF in the present case suggested that demyelination as well as inflammation can occur in some FLAMES patients.
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Affiliation(s)
- Hiroyuki Hokama
- Department of Neurology, Graduate School of Medicine, Nippon Medical School, Japan
| | - Yuki Sakamoto
- Department of Neurology, Graduate School of Medicine, Nippon Medical School, Japan
| | - Toshiyuki Hayashi
- Department of Neurology, Graduate School of Medicine, Nippon Medical School, Japan
| | - Seira Hatake
- Department of Neurology, Graduate School of Medicine, Nippon Medical School, Japan
| | - Mizuho Takahashi
- Department of Neurology, Graduate School of Medicine, Nippon Medical School, Japan
| | - Hiroto Kodera
- Department of Neurology, Graduate School of Medicine, Nippon Medical School, Japan
| | - Akihito Kutsuna
- Department of Neurology, Graduate School of Medicine, Nippon Medical School, Japan
| | - Chikako Nito
- Department of Neurology, Graduate School of Medicine, Nippon Medical School, Japan
| | - Shunya Nakane
- Department of Neurology, Graduate School of Medicine, Nippon Medical School, Japan
| | - Hiroshi Nagayama
- Department of Neurology, Graduate School of Medicine, Nippon Medical School, Japan
| | - Toshiyuki Takahashi
- Department of Neurology, Tohoku University Graduate School of Medicine, Japan
- Department of Neurology, National Hospital Organization Yonezawa National Hospital, Japan
| | - Kazumi Kimura
- Department of Neurology, Graduate School of Medicine, Nippon Medical School, Japan
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16
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Sakurai K, Ikenouchi H, Yamamoto N, Furuta K, Ogawa R, Endo K. Uremic Encephalopathy Presenting with Unilateral Destructive Leukoencephalopathy Successfully Treated with Hemodialysis. Intern Med 2022; 62:1351-1353. [PMID: 36198609 DOI: 10.2169/internalmedicine.9494-22] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/07/2023] Open
Abstract
An 81-year-old woman was hospitalized with progressive consciousness disturbance. Blood tests showed acidemia with severe renal dysfunction, and a cerebral spinal fluid (CSF) test showed pleocytosis with myelin basic protein (MBP) elevation. Brain magnetic resonance imaging showed unilaterally dominant subcortical white matter lesions with lentiform fork sign on T2-weighted imaging. After initiating hemodialysis, her consciousness disturbance and white matter lesions improved, suggesting uremic encephalopathy (UE). Unilaterally dominant leukoencephalopathy and high pleocytosis with MBP elevation in CSF are less common than previously identified characteristics of UE. When unilateral leukoencephalopathy occurs in patients with renal failure, UE should be considered.
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Affiliation(s)
| | | | | | - Kyohei Furuta
- Division of Internal Medicine, Sendai City Hospital, Japan
| | - Ryo Ogawa
- Division of Neurology, Sendai City Hospital, Japan
| | - Kaoru Endo
- Division of Neurology, Sendai City Hospital, Japan
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17
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Abstract
The pathology of fetal alcohol syndrome and the less severe fetal alcohol spectrum disorders includes brain dysmyelination. Recent studies have shed light on the molecular mechanisms underlying these white matter abnormalities. Rodent models of fetal alcohol syndrome and human studies have shown suppressed oligodendrocyte differentiation and apoptosis of oligodendrocyte precursor cells. Ethanol exposure led to reduced expression of myelin basic protein and delayed myelin basic protein expression in rat and mouse models of fetal alcohol syndrome and in human histopathological specimens. Several studies have reported increased expression of many chemokines in dysmyelinating disorders in central nervous system, including multiple sclerosis and fetal alcohol syndrome. Acute ethanol exposure reduced levels of the neuroprotective insulin-like growth factor-1 in fetal and maternal sheep and in human fetal brain tissues, while ethanol increased the expression of tumor necrosis factor α in mouse and human neurons. White matter lesions have been induced in the developing sheep brain by alcohol exposure in early gestation. Rat fetal alcohol syndrome models have shown reduced axon diameters, with thinner myelin sheaths, as well as reduced numbers of oligodendrocytes, which were also morphologically aberrant oligodendrocytes. Expressions of markers for mature myelination, including myelin basic protein, also were reduced. The accumulating knowledge concerning the mechanisms of ethanol-induced dysmyelination could lead to the development of strategies to prevent dysmyelination in children exposed to ethanol during fetal development. Future studies using fetal oligodendrocyte- and oligodendrocyte precursor cell-derived exosomes isolated from the mother’s blood may identify biomarkers for fetal alcohol syndrome and even implicate epigenetic changes in early development that affect oligodendrocyte precursor cell and oligodendrocyte function in adulthood. By combining various imaging modalities with molecular studies, it may be possible to determine which fetuses are at risk and to intervene therapeutically early in the pregnancy.
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Affiliation(s)
- Nune Darbinian
- Center for Neural Repair and Rehabilitation (Shriners Hospitals Pediatric Research Center), Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA
| | - Michael E Selzer
- Center for Neural Repair and Rehabilitation (Shriners Hospitals Pediatric Research Center), Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA
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18
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Kompaneets IY, Sedykh SE, Buneva VN, Dmitrenok PS, Nevinsky GA. Secretory immunoglobulin A from human milk hydrolyzes 5 histones and myelin basic protein. J Dairy Sci 2021; 105:950-964. [PMID: 34802738 DOI: 10.3168/jds.2021-20917] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 10/10/2021] [Indexed: 11/19/2022]
Abstract
Mother's milk provides newborns with various nutrients (e.g., enzymes, proteins, peptides, hormones, antibodies) that help babies grow and protect them from bacterial and viral infections. The functions of many components of breast milk can be very different from their corresponding functions in body fluids of healthy adults. Catalytic antibodies (abzymes) that hydrolyze peptides, proteins, DNA, RNA, and oligosaccharides were detected not only in human milk, but also in the blood sera of autoimmune patients. However, abzymes with unexpected synthetic activities (lipids, oligosaccharides, and protein kinase activities) were revealed in milk that were not found in the blood of autoimmune patients. The nutrition of infants with fresh milk has a very specific role; newborns are well protected by antibodies of mother's milk (passive immunity). Protease abzymes were found in the blood sera of autoimmune patients, whereas healthy humans usually do not contain such autoantibodies. Here, we present the first evidence that the milk of healthy mothers contains secretory (s)IgA that effectively hydrolyze 5 histones (e.g., H1, H2A, H2B, H3, and H4) and myelin basic protein (MBP). Several rigid criteria were applied to show that protease activity is an intrinsic property of sIgA. Milk abzymes against 5 histones cannot hydrolyze different control proteins except histones and MBP, whereas autoantibodies against MBP split this protein and 5 histones. Antibodies against histones and MBP exhibit complexation polyreactivity as well as specific and unusual catalytic cross-reactivity. With some exceptions, the specific sites of hydrolysis of H1, H2A, and H2B by sIgA against histones do not coincide with the sites of hydrolysis by abzymes against MBP. On the whole, fresh human milk is a very specific source of many of the most unusual antibodies and abzymes.
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Affiliation(s)
- Ivan Yu Kompaneets
- Institute of Chemical Biology and Fundamental Medicine of Siberian Branch of Russian Academy of Sciences, 8 Lavrentiev Ave., Novosibirsk 630,090, Russia
| | - Sergey E Sedykh
- Institute of Chemical Biology and Fundamental Medicine of Siberian Branch of Russian Academy of Sciences, 8 Lavrentiev Ave., Novosibirsk 630,090, Russia
| | - Valentina N Buneva
- Institute of Chemical Biology and Fundamental Medicine of Siberian Branch of Russian Academy of Sciences, 8 Lavrentiev Ave., Novosibirsk 630,090, Russia
| | - Pavel S Dmitrenok
- G. B. Elyakov Pacific Institute of Bioorganic Chemistry, Far East Division, Russian Academy of Sciences, Vladivostok 690,022, Russia
| | - Georgy A Nevinsky
- Institute of Chemical Biology and Fundamental Medicine of Siberian Branch of Russian Academy of Sciences, 8 Lavrentiev Ave., Novosibirsk 630,090, Russia.
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Smirnova EV, Rakitina TV, Ziganshin RH, Arapidi GP, Saratov GA, Kudriaeva AA, Belogurov AA. Comprehensive Atlas of the Myelin Basic Protein Interaction Landscape. Biomolecules 2021; 11:1628. [PMID: 34827627 DOI: 10.3390/biom11111628] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [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: 09/30/2021] [Revised: 10/27/2021] [Accepted: 10/29/2021] [Indexed: 12/22/2022] Open
Abstract
Intrinsically disordered myelin basic protein (MBP) is one of the key autoantigens in autoimmune neurodegeneration and multiple sclerosis particularly. MBP is highly positively charged and lacks distinct structure in solution and therefore its intracellular partners are still mostly enigmatic. Here we used combination of formaldehyde-induced cross-linking followed by immunoprecipitation and liquid chromatography-tandem mass spectrometry (LC-MS/MS) to elucidate the interaction network of MBP in mammalian cells and provide the list of potential MBP interacting proteins. Our data suggest that the largest group of MBP-interacting proteins belongs to cellular proteins involved in the protein translation machinery, as well as in the spatial and temporal regulation of translation. MBP interacts with core ribosomal proteins, RNA helicase Ddx28 and RNA-binding proteins STAU1, TDP-43, ADAR-1 and hnRNP A0, which are involved in various stages of RNA biogenesis and processing, including specific maintaining MBP-coding mRNA. Among MBP partners we identified CTNND1, which has previously been shown to be necessary for myelinating Schwann cells for cell-cell interactions and the formation of a normal myelin sheath. MBP binds proteins MAGEB2/D2 associated with neurotrophin receptor p75NTR, involved in pathways that promote neuronal survival and neuronal death. Finally, we observed that MBP interacts with RNF40–a component of heterotetrameric Rnf40/Rnf20 E3 ligase complex, recruited by Egr2, which is the central transcriptional regulator of peripheral myelination. Concluding, our data suggest that MBP may be more actively involved in myelination not only as a main building block but also as a self-regulating element.
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Zarzuelo-Romero MJ, Pérez-Ramírez C, Cura Y, Carrasco-Campos MI, Marangoni-Iglecias LM, Ramírez-Tortosa MC, Jiménez-Morales A. Influence of Genetic Polymorphisms on Clinical Outcomes of Glatiramer Acetate in Multiple Sclerosis Patients. J Pers Med 2021; 11:jpm11101032. [PMID: 34683173 PMCID: PMC8540092 DOI: 10.3390/jpm11101032] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 10/04/2021] [Accepted: 10/05/2021] [Indexed: 02/07/2023] Open
Abstract
Multiple sclerosis (MS) is a chronic, inflammatory, demyelinating disease of autoimmune origin, in which inflammation and demyelination lead to neurodegeneration and progressive disability. Treatment is aimed at slowing down the course of the disease and mitigating its symptoms. One of the first-line treatments used in patients with MS is glatiramer acetate (GA). However, in clinical practice, a response rate of between 30% and 55% is observed. This variability in the effectiveness of the medication may be influenced by genetic factors such as polymorphisms in the genes involved in the pathogenesis of MS. Therefore, this review assesses the impact of genetic variants on the response to GA therapy in patients diagnosed with MS. The results suggest that a relationship exists between the effectiveness of the treatment with GA and the presence of polymorphisms in the following genes: CD86, CLEC16A, CTSS, EOMES, MBP, FAS, TRBC1, IL1R1, IL12RB2, IL22RA2, PTPRT, PVT1, ALOX5AP, MAGI2, ZAK, RFPL3, UVRAG, SLC1A4, and HLA-DRB1*1501. Consequently, the identification of polymorphisms in these genes can be used in the future as a predictive marker of the response to GA treatment in patients diagnosed with MS. Nevertheless, there is a lack of evidence for this and more validation studies need to be conducted to apply this information to clinical practice.
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Affiliation(s)
- María José Zarzuelo-Romero
- Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Granada, 18001 Granada, Spain;
| | - Cristina Pérez-Ramírez
- Center of Biomedical Research, Department of Biochemistry and Molecular Biology II, Institute of Nutrition and Food Technology “José Mataix”, University of Granada, Avda. del Conocimiento s/n., 18016 Armilla, Granada, Spain;
- Pharmacogenetics Unit, Pharmacy Service, Virgen de las Nieves University Hospital, 18012 Granada, Spain; (Y.C.); (M.I.C.-C.); (L.M.M.-I.); (A.J.-M.)
- Correspondence:
| | - Yasmín Cura
- Pharmacogenetics Unit, Pharmacy Service, Virgen de las Nieves University Hospital, 18012 Granada, Spain; (Y.C.); (M.I.C.-C.); (L.M.M.-I.); (A.J.-M.)
| | - María Isabel Carrasco-Campos
- Pharmacogenetics Unit, Pharmacy Service, Virgen de las Nieves University Hospital, 18012 Granada, Spain; (Y.C.); (M.I.C.-C.); (L.M.M.-I.); (A.J.-M.)
| | - Luciana María Marangoni-Iglecias
- Pharmacogenetics Unit, Pharmacy Service, Virgen de las Nieves University Hospital, 18012 Granada, Spain; (Y.C.); (M.I.C.-C.); (L.M.M.-I.); (A.J.-M.)
| | - María Carmen Ramírez-Tortosa
- Center of Biomedical Research, Department of Biochemistry and Molecular Biology II, Institute of Nutrition and Food Technology “José Mataix”, University of Granada, Avda. del Conocimiento s/n., 18016 Armilla, Granada, Spain;
| | - Alberto Jiménez-Morales
- Pharmacogenetics Unit, Pharmacy Service, Virgen de las Nieves University Hospital, 18012 Granada, Spain; (Y.C.); (M.I.C.-C.); (L.M.M.-I.); (A.J.-M.)
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Barton SK, Gregory JM, Selvaraj BT, McDade K, Henstridge CM, Spires-Jones TL, James OG, Mehta AR, Story D, Burr K, Magnani D, Isaacs AM, Smith C, Chandran S. Dysregulation in Subcellular Localization of Myelin Basic Protein mRNA Does Not Result in Altered Myelination in Amyotrophic Lateral Sclerosis. Front Neurosci 2021; 15:705306. [PMID: 34539336 PMCID: PMC8440970 DOI: 10.3389/fnins.2021.705306] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 07/23/2021] [Indexed: 11/13/2022] Open
Abstract
Pathological hallmarks of amyotrophic lateral sclerosis (ALS), including protein misfolding, are well established in oligodendrocytes. More recently, an RNA trafficking deficit of key myelin proteins has been suggested in oligodendrocytes in ALS but the extent to which this affects myelination and the relative contribution of this to disease pathogenesis is unclear. ALS autopsy research findings showing demyelination contrasts with the routine clinical-pathological workup of ALS cases where it is rare to see white matter abnormalities other than simple Wallerian degeneration secondary to widespread neuronal loss. To begin to address this apparent variance, we undertook a comprehensive evaluation of myelination at an RNA, protein and structural level using human pathological material from sporadic ALS patients, genetic ALS patients (harboring C9orf72 mutation) and age- and sex-matched non-neurological controls. We performed (i) quantitative spatial profiling of the mRNA transcript encoding myelin basic protein (MBP), (ii) quantification of MBP protein and (iii) the first quantitative structural assessment of myelination in ALS post-mortem specimens by electron microscopy. We show no differences in MBP protein levels or ultrastructural myelination, despite a significant dysregulation in the subcellular trafficking of MBP mRNA in ALS patients compared to controls. We therefore confirm that whilst there are cell autonomous mRNA trafficking deficits affecting oligodendrocytes in ALS, this has no effect on myelin structure.
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Affiliation(s)
- Samantha K. Barton
- Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, Australia
- Euan MacDonald Centre for MND Research, The University of Edinburgh, Edinburgh, United Kingdom
- Centre for Clinical Brain Sciences, The University of Edinburgh, Edinburgh, United Kingdom
- UK Dementia Research Institute at The University of Edinburgh, The University of Edinburgh, Edinburgh, United Kingdom
| | - Jenna M. Gregory
- Euan MacDonald Centre for MND Research, The University of Edinburgh, Edinburgh, United Kingdom
- Centre for Clinical Brain Sciences, The University of Edinburgh, Edinburgh, United Kingdom
- UK Dementia Research Institute at The University of Edinburgh, The University of Edinburgh, Edinburgh, United Kingdom
| | - Bhuvaneish T. Selvaraj
- Euan MacDonald Centre for MND Research, The University of Edinburgh, Edinburgh, United Kingdom
- Centre for Clinical Brain Sciences, The University of Edinburgh, Edinburgh, United Kingdom
- UK Dementia Research Institute at The University of Edinburgh, The University of Edinburgh, Edinburgh, United Kingdom
| | - Karina McDade
- Euan MacDonald Centre for MND Research, The University of Edinburgh, Edinburgh, United Kingdom
- Centre for Clinical Brain Sciences, The University of Edinburgh, Edinburgh, United Kingdom
| | - Christopher M. Henstridge
- Euan MacDonald Centre for MND Research, The University of Edinburgh, Edinburgh, United Kingdom
- UK Dementia Research Institute at The University of Edinburgh, The University of Edinburgh, Edinburgh, United Kingdom
- Centre for Discovery Brain Sciences, The University of Edinburgh, Edinburgh, United Kingdom
| | - Tara L. Spires-Jones
- Euan MacDonald Centre for MND Research, The University of Edinburgh, Edinburgh, United Kingdom
- UK Dementia Research Institute at The University of Edinburgh, The University of Edinburgh, Edinburgh, United Kingdom
- Centre for Discovery Brain Sciences, The University of Edinburgh, Edinburgh, United Kingdom
| | - Owen G. James
- Euan MacDonald Centre for MND Research, The University of Edinburgh, Edinburgh, United Kingdom
- Centre for Clinical Brain Sciences, The University of Edinburgh, Edinburgh, United Kingdom
- UK Dementia Research Institute at The University of Edinburgh, The University of Edinburgh, Edinburgh, United Kingdom
| | - Arpan R. Mehta
- Euan MacDonald Centre for MND Research, The University of Edinburgh, Edinburgh, United Kingdom
- Centre for Clinical Brain Sciences, The University of Edinburgh, Edinburgh, United Kingdom
- UK Dementia Research Institute at The University of Edinburgh, The University of Edinburgh, Edinburgh, United Kingdom
| | - David Story
- Euan MacDonald Centre for MND Research, The University of Edinburgh, Edinburgh, United Kingdom
- Centre for Clinical Brain Sciences, The University of Edinburgh, Edinburgh, United Kingdom
- UK Dementia Research Institute at The University of Edinburgh, The University of Edinburgh, Edinburgh, United Kingdom
| | - Karen Burr
- Euan MacDonald Centre for MND Research, The University of Edinburgh, Edinburgh, United Kingdom
- Centre for Clinical Brain Sciences, The University of Edinburgh, Edinburgh, United Kingdom
- UK Dementia Research Institute at The University of Edinburgh, The University of Edinburgh, Edinburgh, United Kingdom
| | - Dario Magnani
- Euan MacDonald Centre for MND Research, The University of Edinburgh, Edinburgh, United Kingdom
- Centre for Clinical Brain Sciences, The University of Edinburgh, Edinburgh, United Kingdom
- UK Dementia Research Institute at The University of Edinburgh, The University of Edinburgh, Edinburgh, United Kingdom
| | - Adrian M. Isaacs
- UK Dementia Research Institute at UCL, Faculty of Brain Sciences, University College London, London, United Kingdom
- Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom
| | - Colin Smith
- Euan MacDonald Centre for MND Research, The University of Edinburgh, Edinburgh, United Kingdom
- Centre for Clinical Brain Sciences, The University of Edinburgh, Edinburgh, United Kingdom
| | - Siddharthan Chandran
- Euan MacDonald Centre for MND Research, The University of Edinburgh, Edinburgh, United Kingdom
- Centre for Clinical Brain Sciences, The University of Edinburgh, Edinburgh, United Kingdom
- UK Dementia Research Institute at The University of Edinburgh, The University of Edinburgh, Edinburgh, United Kingdom
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22
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Nevinsky GA, Baranova SV, Buneva VN, Dmitrenok PS. Multiple Sclerosis: Enzymatic Cross Site-Specific Hydrolysis of H1 Histone by IgGs against H1, H2A, H2B, H3, H4 Histones, and Myelin Basic Protein. Biomolecules 2021; 11:biom11081140. [PMID: 34439806 PMCID: PMC8392522 DOI: 10.3390/biom11081140] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 07/22/2021] [Accepted: 07/29/2021] [Indexed: 12/16/2022] Open
Abstract
Histones play a key role in chromatin remodeling and gene transcription. Further, free histones in the blood act as damage-associated molecules. Administration of histones to animals results in systemic inflammatory and toxic effects. Myelin basic protein is the principal constituent element of the myelin-proteolipid sheath of axons. Abzymes (antibodies with catalytic activities) are the original features of some autoimmune diseases. In this study, electrophoretically homogeneous IgGs against H1, H2A, H2B, H3, and H4 histones and myelin basic protein (MBP) were isolated from the blood sera of multiple sclerosis (MS) patients by several affinity chromatographies. Using MALDI mass spectrometry, the sites of H1 histone cleavage by IgGs against H1, H2A, H2B, H3, H4, and MBP were determined. It was shown that IgGs against H1 split H1 at 12 sites, while the number of cleavage sites by abzymes against other histones was lower: H2A (9), H2B (7), H3 (3), and H4 (3). The minimum rate of H1 hydrolysis was observed for antibodies against H3 and H4. A high rate of hydrolysis and the maximum number of H1 hydrolysis sites (17) were found for antibodies against MBP. Only a few sites of H1 hydrolysis by anti-H1 antibodies coincided with those for IgGs against H2A, H2B, H3, H4, and MBP. Thus, the polyreactivity of complexation and the enzymatic cross-activity of antibodies against H1, four other histones, and MBP have first been shown. Since histones act as damage molecules, abzymes against histones and MBP can play a negative role in the pathogenesis of MS and probably other different diseases as well.
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Affiliation(s)
- Georgy A. Nevinsky
- Siberian Division, Institute of Chemical Biology and Fundamental Medicine, Russian Academy of Sciences, Lavrentiev Ave. 8, 630090 Novosibirsk, Russia; (S.V.B.); (V.N.B.)
- Correspondence:
| | - Svetlana V. Baranova
- Siberian Division, Institute of Chemical Biology and Fundamental Medicine, Russian Academy of Sciences, Lavrentiev Ave. 8, 630090 Novosibirsk, Russia; (S.V.B.); (V.N.B.)
| | - Valentina N. Buneva
- Siberian Division, Institute of Chemical Biology and Fundamental Medicine, Russian Academy of Sciences, Lavrentiev Ave. 8, 630090 Novosibirsk, Russia; (S.V.B.); (V.N.B.)
| | - Pavel S. Dmitrenok
- Far East Division, Pacific Institute of Bioorganic Chemistry, Russian Academy of Sciences, 690022 Vladivostok, Russia;
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23
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Liaw J, Hsieh WH, Chiou SH, Huang YS, Chang SF. Assessment of the Oral Delivery of a Myelin Basic Protein Gene Promoter with Antiapoptotic bcl-x L (pMBP-bcl-x L) DNA by Cyclic Peptide Nanotubes with Two Aspect Ratios and Its Biodistribution in the Brain and Spinal Cord. Mol Pharm 2021; 18:2556-2573. [PMID: 34110176 DOI: 10.1021/acs.molpharmaceut.1c00057] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Cyclo-(D-Trp-Tyr) peptide nanotubes (PNTs) were reported to be potential carriers for oral gene delivery in our previous study; however, the effect of the aspect ratio (AR) of these PNTs on gene delivery in vivo could affect penetration or interception in biological environments. The aim of this study was to assess the feasibility of cyclo-(D-Trp-Tyr) PNTs with two ARs as carriers for oral pMBP-bcl-xL-hRluc delivery to the spinal cord to treat spinal cord injury (SCI). We evaluated the biodistribution of oligodendrocyte (OLG)-specific myelin basic protein gene promoter-driven antiapoptotic DNA (pMBP-bcl-xL) to the brain and spinal cord delivered with cyclo-(D-Trp-Tyr) PNTs with large (L) and small (S) PNTs with two ARs. After complex formation, the length, width, and AR of the L-PNTs/DNA were 77.86 ± 3.30, 6.51 ± 0.28, and 13.75 ± 7.29 μm, respectively, and the length and width of the S-PNTs/DNA were 1.17 ± 0.52 and 0.17 ± 0.05 μm, respectively, giving an AR of 7.12 ± 3.17 as detected by scanning electron microscopy. Each of these three parameters exhibited significant differences (p < 0.05) between L-PNTs/DNA and S-PNTs/DNA. However, there were no significant differences (p > 0.05) between the L-PNTs and S-PNTs for either their DNA encapsulation efficiency (29.72 ± 14.19 and 34.31 ± 16.78%, respectively) or loading efficiency (5.15 ± 2.58 and 5.95 ± 2.91%). The results of the in vitro analysis showed that the S-PNT/DNA complexes had a significantly higher DNA release rate and DNA permeation in the duodenum than the L-PNT/DNA complexes. Using Cy5 and TM-rhodamine to individually and chemically conjugate the PNTs with plasmid DNA, we observed, using laser confocal microscopy, that the PNTs and DNA colocalized in complexes. We further confirmed the complexation between DNA and the PNTs using fluorescence resonance energy transfer (FRET). Data from an in vivo imaging system (IVIS) showed that there was no significant difference (p > 0.05) in PNT distribution between L-PNTs/DNA and S-PNTs/DNA within 4 h. However, the S-PNT/DNA group had a significantly higher DNA distribution (p < 0.05) in several organs, including the ilium, heart, lungs, spleen, kidneys, testes, brain, and spinal cord. Finally, we determined the bcl-xL protein expression levels in the brain and spinal cord regions for the L-PNT/DNA and S-PNT/DNA complex formulations. These results suggested that either L-PNTs or S-PNTs may be used as potential carriers for oral gene delivery to treat SCI.
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Affiliation(s)
- Jiahorng Liaw
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei 110, Taiwan
| | - Wei-Hsien Hsieh
- Department of Biotechnology and Pharmaceutical Technology, Yuanpei University of Medical Technology, Hsinchu 300, Taiwan
| | - Shih-Hsun Chiou
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei 110, Taiwan
| | - Yu-Shan Huang
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei 110, Taiwan
| | - Shwu-Fen Chang
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei 111, Taiwan
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24
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Kumashiro M, Izumi Y, Matsuo K. Conformation of myelin basic protein bound to phosphatidylinositol membrane characterized by vacuum-ultraviolet circular-dichroism spectroscopy and molecular-dynamics simulations. Proteins 2021; 89:1251-1261. [PMID: 33998060 DOI: 10.1002/prot.26146] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 05/07/2021] [Indexed: 12/18/2022]
Abstract
The 18.5-kDa isoform of myelin basic protein (MBP) interacts with the membrane surface of the myelin sheath to construct its compact multilamellar structure. This study characterized the conformation of MBP in the membrane by measuring the vacuum-ultraviolet circular-dichroism (VUVCD) spectra of MBP in the bilayer liposome comprising the following essential lipid constituents of the myelin sheath: phosphatidylinositol (PI), phosphatidylinositol-4-phosphate (PIP), and phosphatidylinositol-4,5-bisphosphate (PIP2). The spectra of MBP exhibited the characteristic peaks of the helix structure in the presence of PI liposome, and the intensity increased markedly in the presence of PIP and PIP2 liposomes to show an isodichroic point. This suggests that the amount of the membrane-bound conformation of MBP enhanced due to the increased number of negative net charges on the liposome surfaces. Secondary-structure analysis revealed that MBP in the membrane comprised approximately 40% helix contents and eight helix segments. Molecular-dynamics (MD) simulations of the eight segments were conducted for 250 ns in the presence of PI membrane, which predicted two amphiphilic and three nonamphiphilic helices as the membrane-interaction sites. Further analysis of the distances of the amino-acid residues in each segment from the phosphate group suggested that the nonamphiphilic helices interact with the membrane surface electrostatically, while the amphiphilic ones invade the inside of the membrane to produce electrostatic and hydrophobic interactions. These results show that MBP can interact with the PI membrane via amphiphilic and nonamphiphilic helices under the control of a delicate balance between electrostatic and hydrophobic interactions.
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Affiliation(s)
- Munehiro Kumashiro
- Department of Physical Science, Graduate School of Science, Hiroshima University, Hiroshima, Japan
| | - Yudai Izumi
- Hiroshima Synchrotron Radiation Center, Hiroshima University, Hiroshima, Japan
| | - Koichi Matsuo
- Hiroshima Synchrotron Radiation Center, Hiroshima University, Hiroshima, Japan
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25
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Saiki T, Nakamura N, Miyabe M, Ito M, Minato T, Sango K, Matsubara T, Naruse K. The Effects of Insulin on Immortalized Rat Schwann Cells, IFRS1. Int J Mol Sci 2021; 22:ijms22115505. [PMID: 34071138 PMCID: PMC8197103 DOI: 10.3390/ijms22115505] [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] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 05/18/2021] [Accepted: 05/19/2021] [Indexed: 01/02/2023] Open
Abstract
Schwann cells play an important role in peripheral nerve function, and their dysfunction has been implicated in the pathogenesis of diabetic neuropathy and other demyelinating diseases. The physiological functions of insulin in Schwann cells remain unclear and therefore define the aim of this study. By using immortalized adult Fischer rat Schwann cells (IFRS1), we investigated the mechanism of the stimulating effects of insulin on the cell proliferation and expression of myelin proteins (myelin protein zero (MPZ) and myelin basic protein (MBP). The application of insulin to IFRS1 cells increased the proliferative activity and induced phosphorylation of Akt and ERK, but not P38-MAPK. The proliferative potential of insulin-stimulated IFRS1 was significantly suppressed by the addition of LY294002, a PI3 kinase inhibitor. The insulin-stimulated increase in MPZ expression was significantly suppressed by the addition of PD98059, a MEK inhibitor. Furthermore, insulin-increased MBP expression was significantly suppressed by the addition of LY294002. These findings suggest that both PI3-K/Akt and ERK/MEK pathways are involved in insulin-induced cell growth and upregulation of MPZ and MBP in IFRS1 Schwann cells.
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Affiliation(s)
- Tomokazu Saiki
- Department of Pharmacy, Aichi Gakuin University Dental Hospital, Nagoya 464-8651, Japan;
| | - Nobuhisa Nakamura
- Department of Internal Medicine, School of Dentistry, Aichi Gakuin University, Nagoya 464-8651, Japan; (M.M.); (M.I.); (T.M.); (K.N.)
- Correspondence: ; Tel.: +81-52-759-2111; Fax: +81-52-759-2168
| | - Megumi Miyabe
- Department of Internal Medicine, School of Dentistry, Aichi Gakuin University, Nagoya 464-8651, Japan; (M.M.); (M.I.); (T.M.); (K.N.)
| | - Mizuho Ito
- Department of Internal Medicine, School of Dentistry, Aichi Gakuin University, Nagoya 464-8651, Japan; (M.M.); (M.I.); (T.M.); (K.N.)
| | - Tomomi Minato
- Department of Clinical Laboratory, Aichi Gakuin University Dental Hospital, Nagoya 464-8651, Japan;
| | - Kazunori Sango
- Diabetic Neuropathy Project, Department of Diseases and Infection, Tokyo Metropolitan Institute of Medical Science, Tokyo 156-8506, Japan;
| | - Tatsuaki Matsubara
- Department of Internal Medicine, School of Dentistry, Aichi Gakuin University, Nagoya 464-8651, Japan; (M.M.); (M.I.); (T.M.); (K.N.)
| | - Keiko Naruse
- Department of Internal Medicine, School of Dentistry, Aichi Gakuin University, Nagoya 464-8651, Japan; (M.M.); (M.I.); (T.M.); (K.N.)
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26
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Krugmann B, Koutsioubas A, Haris L, Micciulla S, Lairez D, Radulescu A, Förster S, Stadler AM. Adhesion Process of Biomimetic Myelin Membranes Triggered by Myelin Basic Protein. Front Chem 2021; 9:631277. [PMID: 34017815 PMCID: PMC8129001 DOI: 10.3389/fchem.2021.631277] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 04/01/2021] [Indexed: 11/13/2022] Open
Abstract
The myelin sheath-a multi-double-bilayer membrane wrapped around axons-is an essential part of the nervous system which enables rapid signal conduction. Damage of this complex membrane system results in demyelinating diseases such as multiple sclerosis (MS). The process in which myelin is generated in vivo is called myelination. In our study, we investigated the adhesion process of large unilamellar vesicles with a supported membrane bilayer that was coated with myelin basic protein (MBP) using time-resolved neutron reflectometry. Our aim was to mimic and to study the myelination process of membrane systems having either a lipid-composition resembling that of native myelin or that of the standard animal model for experimental autoimmune encephalomyelitis (EAE) which represents MS-like conditions. We were able to measure the kinetics of the partial formation of a double bilayer in those systems and to characterize the scattering length density profiles of the initial and final states of the membrane. The kinetics could be modeled using a random sequential adsorption simulation. By using a free energy minimization method, we were able to calculate the shape of the adhered vesicles and to determine the adhesion energy per MBP. For the native membrane the resulting adhesion energy per MBP is larger than that of the EAE modified membrane type. Our observations might help in understanding myelination and especially remyelination-a process in which damaged myelin is repaired-which is a promising candidate for treatment of the still mostly incurable demyelinating diseases such as MS.
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Affiliation(s)
- Benjamin Krugmann
- Jülich Centre for Neutron Science at MLZ, Forschungszentrum Jülich GmbH, Garching, Germany
- Institute of Physical Chemistry, RWTH Aachen University, Aachen, Germany
| | - Alexandros Koutsioubas
- Jülich Centre for Neutron Science at MLZ, Forschungszentrum Jülich GmbH, Garching, Germany
| | - Luman Haris
- Institute of Physical Chemistry, RWTH Aachen University, Aachen, Germany
- Jülich Centre for Neutron Science (JCNS-1) and Institute for Biological Information Processing (IBI-8), Forschungszentrum Jülich GmbH, Jülich, Germany
| | | | - Didier Lairez
- Laboratoire des Solides Irradiés, École Polytechnique, CEA, CNRS, Institut Polytechnique de Paris, Palaiseau, France
| | - Aurel Radulescu
- Jülich Centre for Neutron Science at MLZ, Forschungszentrum Jülich GmbH, Garching, Germany
| | - Stephan Förster
- Jülich Centre for Neutron Science (JCNS-1) and Institute for Biological Information Processing (IBI-8), Forschungszentrum Jülich GmbH, Jülich, Germany
| | - Andreas M. Stadler
- Institute of Physical Chemistry, RWTH Aachen University, Aachen, Germany
- Jülich Centre for Neutron Science (JCNS-1) and Institute for Biological Information Processing (IBI-8), Forschungszentrum Jülich GmbH, Jülich, Germany
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27
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Han Y, Xiong W, Liu J, Dai W, Su Y, Gao L, Wang G, Li P, Zhang X. Associations of Serum Cytokine Levels and Interleukin-6-572C/G Polymorphism with Myelin Damage in Chinese Children with Autism Spectrum Disorder. Neuroscience 2021; 465:95-104. [PMID: 33895339 DOI: 10.1016/j.neuroscience.2021.04.006] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 04/05/2021] [Accepted: 04/08/2021] [Indexed: 01/01/2023]
Abstract
Increasing evidence suggests that immunological disturbances and abnormalities in axonal myelination are involved in the pathophysiology of autism spectrum disorder (ASD). The present study aimed to determine the role of cytokines in myelin damage in Chinese children with ASD and the role of cytokine dysregulation, myelin damage, and cytokine polymorphisms in ASD in Chinese children. The present case-control study included 98 ASD subjects and 252 typically developing (TD) controls; the levels of serum cytokines and myelin basic protein (MBP) were determined using enzyme-linked immunosorbent assay. Cytokine polymorphisms were genotyped using polymerase chain reaction-restriction fragment length polymorphism analysis. Autistic clinical manifestations were assessed by the Childhood Autism Rating Scale (CARS). The results showed that serum levels of interleukin (IL)-1β, IL-2R, IL-6, IL-8, and MBP were higher in children with ASD compared with those in TD children. In individuals with ASD, serum MBP level was significantly positively associated with the CARS total score, and serum levels of IL-1β, IL-2R, IL-6, and MBP demonstrated positive correlations. The data identified IL-6*MBP as a factor that influenced the risk of ASD, and IL-2R*MBP was identified as a factor that influenced symptom severity, which influenced auxiliary diagnosis of ASD. The presence of the interleukin-6-572CC genotype was associated with significantly higher serum levels of IL-6 and MBP but did not influence the risk and symptom severity of ASD. Therefore, the results suggested inflammatory responses and myelin damage in Chinese children with ASD. Cytokine dysregulation influenced myelin damage in ASD; moreover, the interactions of the cytokines and myelin damage influenced the risk and symptom severity of ASD. The IL-6-572C/G genotypes may be associated with myelin damage in ASD by influencing the circulating level of IL-6.
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Affiliation(s)
- Yu Han
- Department of Maternal, Child & Adolescence Health, School of Public Health, Tianjin Medical University, Tianjin 300070, China
| | - Wenjuan Xiong
- Department of Maternal, Child & Adolescence Health, School of Public Health, Tianjin Medical University, Tianjin 300070, China
| | - Jiaxue Liu
- Department of Maternal, Child & Adolescence Health, School of Public Health, Tianjin Medical University, Tianjin 300070, China
| | - Wei Dai
- Department of Maternal, Child & Adolescence Health, School of Public Health, Tianjin Medical University, Tianjin 300070, China
| | - Yuanyuan Su
- Department of Maternal, Child & Adolescence Health, School of Public Health, Tianjin Medical University, Tianjin 300070, China
| | - Lei Gao
- Department of Maternal, Child & Adolescence Health, School of Public Health, Tianjin Medical University, Tianjin 300070, China
| | - Gengfu Wang
- Department of Maternal, Child & Adolescence Health, School of Public Health, Tianjin Medical University, Tianjin 300070, China
| | - Peiying Li
- Department of Maternal, Child & Adolescence Health, School of Public Health, Tianjin Medical University, Tianjin 300070, China
| | - Xin Zhang
- Department of Maternal, Child & Adolescence Health, School of Public Health, Tianjin Medical University, Tianjin 300070, China.
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28
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Kapitza C, Chunder R, Scheller A, Given KS, Macklin WB, Enders M, Kuerten S, Neuhuber WL, Wörl J. Murine Esophagus Expresses Glial-Derived Central Nervous System Antigens. Int J Mol Sci 2021; 22:ijms22063233. [PMID: 33810144 PMCID: PMC8004938 DOI: 10.3390/ijms22063233] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 03/14/2021] [Accepted: 03/16/2021] [Indexed: 12/27/2022] Open
Abstract
Multiple sclerosis (MS) has been considered to specifically affect the central nervous system (CNS) for a long time. As autonomic dysfunction including dysphagia can occur as accompanying phenomena in patients, the enteric nervous system has been attracting increasing attention over the past years. The aim of this study was to identify glial and myelin markers as potential target structures for autoimmune processes in the esophagus. RT-PCR analysis revealed glial fibrillary acidic protein (GFAP), proteolipid protein (PLP), and myelin basic protein (MBP) expression, but an absence of myelin oligodendrocyte glycoprotein (MOG) in the murine esophagus. Selected immunohistochemistry for GFAP, PLP, and MBP including transgenic mice with cell-type specific expression of PLP and GFAP supported these results by detection of (1) GFAP, PLP, and MBP in Schwann cells in skeletal muscle and esophagus; (2) GFAP, PLP, but no MBP in perisynaptic Schwann cells of skeletal and esophageal motor endplates; (3) GFAP and PLP, but no MBP in glial cells surrounding esophageal myenteric neurons; and (4) PLP, but no GFAP and MBP in enteric glial cells forming a network in the esophagus. Our results pave the way for further investigations regarding the involvement of esophageal glial cells in the pathogenesis of dysphagia in MS.
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Affiliation(s)
- Christopher Kapitza
- Institute of Anatomy and Cell Biology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (C.K.); (R.C.); (M.E.); (S.K.); (W.L.N.)
| | - Rittika Chunder
- Institute of Anatomy and Cell Biology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (C.K.); (R.C.); (M.E.); (S.K.); (W.L.N.)
| | - Anja Scheller
- University of Saarland, Department of Molecular Physiology, Center for Integrative Physiology and Molecular Medicine (CIPMM), 66421 Homburg, Germany;
| | - Katherine S. Given
- Department of Cell and Developmental Biology, University of Colorado School of Medicine, Aurora, CO 80045, USA; (K.S.G.); (W.B.M.)
| | - Wendy B. Macklin
- Department of Cell and Developmental Biology, University of Colorado School of Medicine, Aurora, CO 80045, USA; (K.S.G.); (W.B.M.)
| | - Michael Enders
- Institute of Anatomy and Cell Biology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (C.K.); (R.C.); (M.E.); (S.K.); (W.L.N.)
| | - Stefanie Kuerten
- Institute of Anatomy and Cell Biology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (C.K.); (R.C.); (M.E.); (S.K.); (W.L.N.)
- Department of Neuroanatomy, Institute of Anatomy, University Hospitals Bonn, University Bonn, 53115 Bonn, Germany
| | - Winfried L. Neuhuber
- Institute of Anatomy and Cell Biology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (C.K.); (R.C.); (M.E.); (S.K.); (W.L.N.)
| | - Jürgen Wörl
- Institute of Anatomy and Cell Biology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (C.K.); (R.C.); (M.E.); (S.K.); (W.L.N.)
- Correspondence: ; Tel.: +49-913-1852-2870
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Lakshman N, Bourget C, Siu R, Bamm VV, Xu W, Harauz G, Morshead CM. Niche-dependent inhibition of neural stem cell proliferation and oligodendrogenesis is mediated by the presence of myelin basic protein. Stem Cells 2021; 39:776-786. [PMID: 33529418 PMCID: PMC8248327 DOI: 10.1002/stem.3344] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 01/13/2021] [Indexed: 12/13/2022]
Abstract
Neural stem and progenitor cells (collectively termed neural precursor cells [NPCs]) are found along the ventricular neuraxis extending from the spinal cord to the forebrain in regionally distinct niches comprised of different cell types, architecture, and cell-cell interactions. An understanding of the factors that regulate NPC behavior is critical for developing therapeutics to repair the injured central nervous system. Herein, we demonstrate that myelin basic protein (MBP), the major cytoplasmic protein constituent of the myelin sheath in oligodendrocytes, can regulate NPC behavior. Under physiological conditions, NPCs are not in contact with intracellular MBP; however, upon injury, MBP is released into the neural parenchyma. We reveal that MBP presented in a spinal cord niche is inhibitory to NPC proliferation. This inhibitory effect is regionally distinct as spinal cord NPCs, but not forebrain-derived NPCs, are inhibited by MBP. We performed coculture and conditioned media experiments that reveal the stem cell niche is a key regulator of MBP's inhibitory actions on NPCs. The inhibition is mediated by a heat-labile protein released by spinal cord niche cells, but not forebrain niche cells. However, forebrain NPCs are also inhibited by the spinal cord derived factor as revealed following in vivo infusion of the spinal cord niche-derived conditioned media. Moreover, we show that MBP inhibits oligodendrogenesis from NPCs. Together, these findings highlight the role of MBP and the regionally distinct microenvironment in regulating NPC behavior which has important implications for stem cell-based regenerative strategies.
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Affiliation(s)
- Nishanth Lakshman
- Department of Surgery, Donnelly Centre, University of Toronto, Toronto, Ontario, Canada.,Institute of Medical Sciences, University of Toronto, Toronto, Ontario, Canada
| | - Clara Bourget
- Department of Surgery, Donnelly Centre, University of Toronto, Toronto, Ontario, Canada.,Institute of Medical Sciences, University of Toronto, Toronto, Ontario, Canada
| | - Ricky Siu
- Department of Surgery, Donnelly Centre, University of Toronto, Toronto, Ontario, Canada
| | - Vladimir V Bamm
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, Ontario, Canada
| | - Wenjun Xu
- Department of Surgery, Donnelly Centre, University of Toronto, Toronto, Ontario, Canada
| | - George Harauz
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, Ontario, Canada
| | - Cindi M Morshead
- Department of Surgery, Donnelly Centre, University of Toronto, Toronto, Ontario, Canada.,Institute of Medical Sciences, University of Toronto, Toronto, Ontario, Canada.,Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
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Amaya JM, Suidgeest E, Sahut-Barnola I, Dumontet T, Montanier N, Pagès G, Keller C, van der Weerd L, Pereira AM, Martinez A, Meijer OC. Effects of Long-Term Endogenous Corticosteroid Exposure on Brain Volume and Glial Cells in the AdKO Mouse. Front Neurosci 2021; 15:604103. [PMID: 33642975 PMCID: PMC7902940 DOI: 10.3389/fnins.2021.604103] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [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: 09/08/2020] [Accepted: 01/06/2021] [Indexed: 01/26/2023] Open
Abstract
Chronic exposure to high circulating levels of glucocorticoids has detrimental effects on health, including metabolic abnormalities, as exemplified in Cushing’s syndrome (CS). Magnetic resonance imaging (MRI) studies have found volumetric changes in gray and white matter of the brain in CS patients during the course of active disease, but also in remission. In order to explore this further, we performed MRI-based brain volumetric analyses in the AdKO mouse model for CS, which presents its key traits. AdKO mice had reduced relative volumes in several brain regions, including the corpus callosum and cortical areas. The medial amygdala, bed nucleus of the stria terminalis, and hypothalamus were increased in relative volume. Furthermore, we found a lower immunoreactivity of myelin basic protein (MBP, an oligodendrocyte marker) in several brain regions but a paradoxically increased MBP signal in the male cingulate cortex. We also observed a decrease in the expression of glial fibrillary acidic protein (GFAP, a marker for reactive astrocytes) and ionized calcium-binding adapter molecule 1 (IBA1, a marker for activated microglia) in the cingulate regions of the anterior corpus callosum and the hippocampus. We conclude that long-term hypercorticosteronemia induced brain region-specific changes that might include aberrant myelination and a degree of white matter damage, as both repair (GFAP) and immune (IBA1) responses are decreased. These findings suggest a cause for the changes observed in the brains of human patients and serve as a background for further exploration of their subcellular and molecular mechanisms.
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Affiliation(s)
- Jorge Miguel Amaya
- Department of Endocrinology, Leiden University Medical Center, Leiden, Netherlands
| | - Ernst Suidgeest
- Department of Radiology, Leiden University Medical Center, Leiden, Netherlands
| | - Isabelle Sahut-Barnola
- Génétique Reproduction et Développement, Université Clermont-Auvergne, CNRS, INSERM, Clermont-Ferrand, France
| | - Typhanie Dumontet
- Génétique Reproduction et Développement, Université Clermont-Auvergne, CNRS, INSERM, Clermont-Ferrand, France
| | - Nathanaëlle Montanier
- Génétique Reproduction et Développement, Université Clermont-Auvergne, CNRS, INSERM, Clermont-Ferrand, France
| | - Guilhem Pagès
- INRAE, AgroResonance, QuaPA UR370, Saint-Genès-Champanelle, France
| | - Cécile Keller
- INRAE, AgroResonance, QuaPA UR370, Saint-Genès-Champanelle, France
| | - Louise van der Weerd
- Department of Radiology, Leiden University Medical Center, Leiden, Netherlands.,Human Genetics Department, Leiden University Medical Center, Leiden, Netherlands
| | - Alberto M Pereira
- Department of Endocrinology, Leiden University Medical Center, Leiden, Netherlands
| | - Antoine Martinez
- INRAE, AgroResonance, QuaPA UR370, Saint-Genès-Champanelle, France
| | - Onno C Meijer
- Department of Endocrinology, Leiden University Medical Center, Leiden, Netherlands
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Zareba-Paslawska J, Patra K, Kluzer L, Revesz T, Svenningsson P. Tau Isoform-Driven CBD Pathology Transmission in Oligodendrocytes in Humanized Tau Mice. Front Neurol 2021; 11:589471. [PMID: 33519674 PMCID: PMC7845573 DOI: 10.3389/fneur.2020.589471] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 12/07/2020] [Indexed: 12/14/2022] Open
Abstract
The aggregation of abnormally phosphorylated tau protein in neurons and glia is a neuropathological hallmark of several neurodegenerative disorders, collectively known as tauopathies. They are further subclassified based on the preferential pathological aggregation of three carboxyl-terminal repeat domains (3R) and/or 4R tau. Corticobasal degeneration (CBD) is a rare neurodegenerative disorder classified as a 4R tauopathy. In the present study, we extend analysis of CBD-tau cell-type specific pathology transmission with 3R and 4R tau isoform distinguishable changes. We use a humanized tau (hTau) mouse line, which overexpress all six human tau isoforms in a murine tau knockout background and perform intrastriatal inoculation of control and CBD-tau enriched human brain homogenate. We show that CBD-tau causes hyperphosphorylation of tau at Ser202 predominantly in oligodendrocytes. Next, we demonstrate the spread of tau pathology from striatum to the overlaying corpus callosum and further to the contralateral side. Finally, we demonstrate that the almost exclusive oligodendrocyte-based transmission of hyperphosphorylated tau is reflected in the endogenous 4R tau isoform expression and corresponds to subclassification of CBD as a 4R tauopathy. Additionally, we identify functional changes in oligodendrocytes reflected by myelin basic protein abnormalities upon CBD-tau inoculation. These changes are not observed in murine tau knockout mice lacking both human and murine tau. Our study presents not only in vivo tau isoform–driven region- and cell-specific tau pathology, but also underlines that tau pathology seeding and transmission might be oligodendrocyte-based. These results, which need to be extended to more cases, give new insights into why tauopathies might vary greatly in both histopathological and neuroanatomical patterns.
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Affiliation(s)
- Justyna Zareba-Paslawska
- Laboratory of Translational Neuropharmacology, Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden
| | - Kalicharan Patra
- Laboratory of Translational Neuropharmacology, Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden
| | - Luca Kluzer
- Laboratory of Translational Neuropharmacology, Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden
| | - Tamas Revesz
- Queen Square Brain Bank, Department of Clinical and Movement Neurosciences, Queen Square Institute of Neurology, University College London, London, United Kingdom
| | - Per Svenningsson
- Laboratory of Translational Neuropharmacology, Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden
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Mindur JE, Yadav SK, Ito N, Senoh M, Kato H, Dhib-Jalbut S, Ito K. Surface Layer Protein A Expressed in Clostridioides difficile DJNS06-36 Possesses an Encephalitogenic Mimotope of Myelin Basic Protein. Microorganisms 2020; 9:microorganisms9010034. [PMID: 33374217 PMCID: PMC7824458 DOI: 10.3390/microorganisms9010034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 11/26/2020] [Revised: 12/14/2020] [Accepted: 12/21/2020] [Indexed: 12/29/2022] Open
Abstract
Multiple sclerosis (MS) is an inflammatory demyelinating disease of the central nervous system (CNS). Recent studies suggest that migration of Th1 and Th17 cells specific for enteric bacteria from the gut to the CNS may lead to the initiation and/or exacerbation of autoimmune diseases including MS. Human leukocyte antigen (HLA)-DR15 is an MHC class II (MHCII) haplotype highly associated with the development of MS that contains the two HLA-DRB* genes, DRB1*1501 (DR2b) and DRB5*0101 (DR2a). To identify enteric bacteria which harbor antigenic epitopes that activate myelin-specific T cells and drive CNS inflammation, we screened for enteric bacteria which express cross-reactive epitopes ('mimotopes') of an immunodominant myelin basic protein 89-98 (MBP89-98) epitope. Based on known MHCII HLA-DR2a amino acid binding motifs and cultivation with splenic T cells isolated from MBP-T cell receptor (TCR)/DR2a transgenic (Tg) mice, we discovered that a certain variant of surface layer protein A (SLPA), which is expressed by a subtype of Clostridioides difficile, contains an amino acid sequence that activates MBP89-98-reactive T cells. Furthermore, activation of MBP-specific T cells by SLPA upon active immunization induced experimental autoimmune encephalomyelitis (EAE) in MBP-TCR/DR2a Tg mice. This study suggests that a unique strain of C. difficile possesses an encephalitogenic mimotope of MBP that activates autoreactive, myelin-specific T cells.
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Affiliation(s)
- John E. Mindur
- Department of Neurology, Rutgers-Robert Wood Johnson Medical School, Piscataway, NJ 08854, USA; (J.E.M.); (S.K.Y.); (N.I.); (S.D.-J.)
- Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Sudhir K. Yadav
- Department of Neurology, Rutgers-Robert Wood Johnson Medical School, Piscataway, NJ 08854, USA; (J.E.M.); (S.K.Y.); (N.I.); (S.D.-J.)
| | - Naoko Ito
- Department of Neurology, Rutgers-Robert Wood Johnson Medical School, Piscataway, NJ 08854, USA; (J.E.M.); (S.K.Y.); (N.I.); (S.D.-J.)
| | - Mitsutoshi Senoh
- Department of Bacteriology II, National Institute of Infectious Diseases, Tokyo 208-001, Japan; (M.S.); (H.K.)
| | - Haru Kato
- Department of Bacteriology II, National Institute of Infectious Diseases, Tokyo 208-001, Japan; (M.S.); (H.K.)
| | - Suhayl Dhib-Jalbut
- Department of Neurology, Rutgers-Robert Wood Johnson Medical School, Piscataway, NJ 08854, USA; (J.E.M.); (S.K.Y.); (N.I.); (S.D.-J.)
| | - Kouichi Ito
- Department of Neurology, Rutgers-Robert Wood Johnson Medical School, Piscataway, NJ 08854, USA; (J.E.M.); (S.K.Y.); (N.I.); (S.D.-J.)
- Correspondence: ; Tel.: +1-732-235-5482
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Baranova SV, Dmitrienok PS, Buneva VN, Nevinsky GA. HIV-Infected Patients: Cross Site-Specific Hydrolysis of H2a and H2b Histones and Myelin Basic Protein with Antibodies against These Three Proteins. Biomolecules 2020; 10:E1501. [PMID: 33143355 PMCID: PMC7693679 DOI: 10.3390/biom10111501] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 07/27/2020] [Revised: 10/05/2020] [Accepted: 10/27/2020] [Indexed: 01/28/2023] Open
Abstract
Anti-DNA antibodies are usually produced against histone-DNA complexes appearing during cell apoptosis, while histones are known as damage-associated molecules. A myelin sheath of axons contains myelin basic protein (MBP) playing an important role in the pathogenesis of autoimmune diseases. Antibodies with enzymatic activities (abzymes) are distinctive features of some autoimmune and viral diseases. Abzymes against different proteins can usually only hydrolyze these specific proteins. Using sequential chromatographies of homogeneous IgG preparations from sera of HIV-infected patients on columns with immobilized MBP, H2a, and H2b histones, the anti-MBP, anti-H2a, and anti-H2b antibodies were obtained. It was first shown that IgGs against H2a and H2b effectively hydrolyze these histones and MBP, while anti-MBP split MBP, H2a, and H2b, but no other control proteins. Using the MALDI mass spectrometry, the cleavage sites of H2a, H2b, and MBP by abzymes against these three proteins were found. Among 14 sites of hydrolysis of H2a by IgGs against H2a and 10 sites by anti-MBP IgGs, only one site of hydrolysis was the same for these abzymes. Eleven cleavage sites of H2b with IgGs against H2b and 10 sites of its hydrolysis with antibodies against MBP were different. Anti-H2a, anti-H2b, and anti-MBP abzymes are unpredictable examples of IgGs possessing not only cross-complexation but also catalytic cross-reactivity, which may be a common phenomenon for such abzymes in patients with different autoimmune diseases. The existence of cross-reactivity of abzymes against H2a and H2b histones and MBP represent a great danger to humans since, in contrast with MBP, histones due to cell apoptosis constantly occur in human blood. Anti-H2a, anti-H2b, and anti-MBP can attack and hydrolyze myelin basic protein of the myelin sheath of axons and plays a negative role in the pathogenesis of several pathologies.
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Affiliation(s)
- Svetlana V. Baranova
- Institute of Chemical Biology and Fundamental Medicine, Siberian Division of Russian Academy of Sciences, 630090 Lavrentiev, Russia; (S.V.B.); (V.N.B.)
| | - Pavel S. Dmitrienok
- Pacific Institute of Bioorganic Chemistry, Far East Division, Russian Academy of Sciences, 690022 Vladivostok, Russia;
| | - Valentina N. Buneva
- Institute of Chemical Biology and Fundamental Medicine, Siberian Division of Russian Academy of Sciences, 630090 Lavrentiev, Russia; (S.V.B.); (V.N.B.)
| | - Georgy A. Nevinsky
- Institute of Chemical Biology and Fundamental Medicine, Siberian Division of Russian Academy of Sciences, 630090 Lavrentiev, Russia; (S.V.B.); (V.N.B.)
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Kleene R, Lutz D, Loers G, Bork U, Borgmeyer U, Hermans-Borgmeyer I, Schachner M. Revisiting the proteolytic processing of cell adhesion molecule L1. J Neurochem 2020; 157:1102-1117. [PMID: 32986867 DOI: 10.1111/jnc.15201] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 09/18/2020] [Accepted: 09/22/2020] [Indexed: 01/02/2023]
Abstract
The important functions of cell adhesion molecule L1 in the nervous system depend on diverse proteolytic enzymes which generate different L1 fragments. It has been reported that cleavage in the third fibronectin type III (FNIII) homologous domain generates the fragments L1-80 and L1-140, while cleavage in the first FNIII domain yields the fragments L1-70 and L1-135. These results raised questions concerning the L1 cleavage sites. We thus generated gene-edited mice expressing L1 with mutations of the cleavage sites either in the first or third FNIII domain. By immunoprecipitations and immunoblot analyses using brain homogenates and different L1 antibodies, we show that L1-70 and L1-135 are generated in wild-type mice, but not or only to a low extent in L1 mutant mice. L1-80 and L1-140 were not detected in wild-type or mutant mice. Mass spectrometry confirmed the results from immunoprecipitations and immunoblot analyses. Based on these observations, we propose that L1-70 and L1-135 are the predominant fragments in the mouse nervous system and that the third FNIII domain is decisive for generating these fragments. Treatment of cultured cerebellar neurons with trypsin or plasmin, which were both proposed to generate L1-80 and L1-140 by cleaving in the third FNIII domain, showed by immunoprecipitations and immunoblot analyses that both proteases lead to the generation of L1-70 and L1-135, but not L1-80 and L1-140. We discuss previous observations on the basis of our new results and propose a novel view on the molecular features that render previous and present observations compatible.
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Affiliation(s)
- Ralf Kleene
- Research Group Biosynthesis of Neural Structures, Zentrum für Molekulare Neurobiologie, Universitätsklinikum Hamburg-Eppendorf, Hamburg, Germany
| | - David Lutz
- Institute for Structural Neurobiology, Zentrum für Molekulare Neurobiologie, Universitätsklinikum Hamburg-Eppendorf, Hamburg, Germany.,Department for Neuroanatomy and Molecular Brain Research, Ruhr-University Bochum, Bochum, Germany
| | - Gabriele Loers
- Research Group Biosynthesis of Neural Structures, Zentrum für Molekulare Neurobiologie, Universitätsklinikum Hamburg-Eppendorf, Hamburg, Germany
| | - Ute Bork
- Research Group Biosynthesis of Neural Structures, Zentrum für Molekulare Neurobiologie, Universitätsklinikum Hamburg-Eppendorf, Hamburg, Germany
| | - Uwe Borgmeyer
- Scientific Service Group for Transgenic Animals, Universitätsklinikum Hamburg-Eppendorf, Hamburg, Germany
| | - Irm Hermans-Borgmeyer
- Scientific Service Group for Transgenic Animals, Universitätsklinikum Hamburg-Eppendorf, Hamburg, Germany
| | - Melitta Schachner
- Keck Center for Collaborative Neuroscience and Department of Cell Biology and Neuroscience, Rutgers University, Piscataway, NJ, USA
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35
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Huang Y, Song YJ, Isaac M, Miretzky S, Patel A, Geoffrey McAuliffe W, Dreyfus CF. Tropomyosin Receptor Kinase B Expressed in Oligodendrocyte Lineage Cells Functions to Promote Myelin Following a Demyelinating Lesion. ASN Neuro 2020; 12:1759091420957464. [PMID: 32927995 PMCID: PMC7495938 DOI: 10.1177/1759091420957464] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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] [Indexed: 12/30/2022] Open
Abstract
The levels of brain-derived neurotrophic factor (BDNF) in the corpus callosum have previously been shown to have a critical impact on oligodendrocyte (OLG) lineage cells during cuprizone-elicited demyelination. In particular, BDNF+/- mice exhibit greater losses in myelin protein levels compared to wild-type mice after cuprizone. To investigate whether OLGs may directly mediate these effects of BDNF during a lesion in vivo, we used the cuprizone model of demyelination with inducible conditional male knockout mice to specifically delete the high-affinity tropomyosin receptor kinase B (TrkB) receptor from proteolipid protein + OLGs during cuprizone-elicited demyelination and subsequent remyelination. The loss of TrkB during cuprizone-elicited demyelination results in an increased sensitivity to demyelination as demonstrated by greater deficits in myelin protein levels, greater decreases in numbers of mature OLGs, increased numbers of demyelinated axons, and decreased myelin thickness. When mice are removed from cuprizone, they exhibit a delayed recovery in myelin proteins and myelin. Our data indicate that following a demyelinating lesion, TrkB in OLGs positively regulates myelin protein expression, myelin itself, and remyelination.
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Affiliation(s)
- Yangyang Huang
- Department of Neuroscience and Cell Biology, Rutgers Robert Wood Johnson Medical School, Piscataway, New Jersey, United States
| | - Yeri J. Song
- Department of Neuroscience and Cell Biology, Rutgers Robert Wood Johnson Medical School, Piscataway, New Jersey, United States
| | - Maria Isaac
- Department of Neuroscience and Cell Biology, Rutgers Robert Wood Johnson Medical School, Piscataway, New Jersey, United States
| | - Shir Miretzky
- Department of Neuroscience and Cell Biology, Rutgers Robert Wood Johnson Medical School, Piscataway, New Jersey, United States
| | - Ashish Patel
- Department of Neuroscience and Cell Biology, Rutgers Robert Wood Johnson Medical School, Piscataway, New Jersey, United States
| | - W. Geoffrey McAuliffe
- Department of Neuroscience and Cell Biology, Rutgers Robert Wood Johnson Medical School, Piscataway, New Jersey, United States
| | - Cheryl F. Dreyfus
- Department of Neuroscience and Cell Biology, Rutgers Robert Wood Johnson Medical School, Piscataway, New Jersey, United States,Cheryl F. Dreyfus, Department of Neuroscience and Cell Biology, Rutgers Robert Wood Johnson Medical School, 683 Hoes Lane West, Piscataway, NJ 08854, United States.
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Bassetti D, Hammann J, Luhmann HJ, White R, Kirischuk S. Ryanodine receptor- and sodium-calcium exchanger-mediated spontaneous calcium activity in immature oligodendrocytes in cultures. Neurosci Lett 2020; 732:134913. [PMID: 32482568 DOI: 10.1016/j.neulet.2020.134913] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 10/29/2019] [Revised: 03/03/2020] [Accepted: 03/12/2020] [Indexed: 11/17/2022]
Abstract
Myelination in the central nervous system depends on interactions between axons and oligodendrocyte precursor cells (OPCs). Action potentials in an axon can be followed by release of biologically active substances, like glutamate, which can instruct OPCs to start myelination. Myelin Basic Protein (MBP) is an "executive molecule of myelin" required for the formation of compact myelin. As cells of the oligodendrocyte lineage (OLCs) are capable of producing MBP in pure oligodendrocyte cultures, i.e. without neurons, we investigated Ca2+ signaling in developing OLCs in cultures. We show that spontaneous Ca2+ transients (CTs) occur at very low frequency in both bipolar OPCs and mature oligodendrocytes. In contrast immature OLCs (imOLCs), cells with several thick processes, demonstrate a relatively high frequency of CTs. Moreover, CT frequency in imOLC processes is much higher as compared with the somatic CT frequency. Somatic CTs are almost completely blocked by thapsigargin, an antagonist of sarco-(endo-) plasmic reticulum Ca2+ ATPase, and ryanodine, a blocker of ryanodine receptors, indicating an involvement of Ca2+ release from the endoplasmic reticulum. Ryanodine strongly reduces CT frequency in imOLC processes. Ouabain, an antagonist of Na+, K+-ATPase (NKA), applied at low concentration increases CT frequency, while KB-R7943, a blocker of reverse mode of Na+, Ca2+ exchanger (NCX), decreases CT frequency. We suggest that local RyR-NCX-(NKA?) interaction might underlie the generation of CTs in imOLC in the absence of neurons, and this activity influences oligodendrocyte maturation.
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Affiliation(s)
- Davide Bassetti
- Institute of Physiology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Jens Hammann
- Institute of Physiology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Heiko J Luhmann
- Institute of Physiology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Robin White
- Institute of Physiology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Sergei Kirischuk
- Institute of Physiology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany.
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Park HJ, Hong J, Piao Y, Shin HJ, Lee SJ, Rhyu IJ, Yi MH, Kim J, Kim DW, Beom J. Extracorporeal shockwave therapy enhances peripheral nerve remyelination and gait function in a crush model. ADV CLIN EXP MED 2020; 29:819-824. [PMID: 32735402 DOI: 10.17219/acem/122177] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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] [Indexed: 11/24/2022]
Abstract
BACKGROUND Conservative treatment, such as electrical stimulation and steroid injection, have been employed in an attempt to improve symptoms after peripheral nerve injury, without significant success. Although non-invasive and safe extracorporeal shockwave therapy (ESWT) can be a practical alternative, the therapeutic effects of ESWT on peripheral nerve remyelination has not been established. OBJECTIVES To investigate the effects of ESWT on peripheral nerve remyelination and gait function for 5 weeks in a sciatic nerve crush model. MATERIAL AND METHODS In total, we divided 97 rats into 5 groups: group 1 - a healthy negative control group; group 2 - 3 weeks after sciatic nerve crush and 3 sessions of ESWT; group 3 - 5 weeks after crush injury with 3 sessions of ESWT; group 4 - 3 weeks after crush injury with no ESWT; and group 5 - 5 weeks after crush injury with no ESWT. The focused ESWT was applied to the unilateral sciatic nerve injury site. One session consisted of 1,500 stimuli, and the session were performed at intervals of 1 week. RESULTS The degree of myelination and expression of myelin basic protein at the distal part of the injured sciatic nerve tended to increase in the ESWT groups compared with the no-ESWT groups 3 and 5 weeks after crush injury. Regarding the functional gait recovery, the print width and area of the injured leg in the ESWT groups was significantly larger than that in the no-ESWT groups 3 and 5 weeks after crush injury. CONCLUSIONS The ESWT may enhance peripheral nerve remyelination and gait function in a nerve crush model. Long-term follow-up after ESWT and investigation of molecular mechanisms will be needed to confirm these therapeutic effects.
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Affiliation(s)
- Hyun Jung Park
- Department of Anatomy, Brain Research Institute, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Jinpyo Hong
- Department of Anatomy, Brain Research Institute, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Yibo Piao
- Department of Anatomy, Brain Research Institute, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Hyo Jung Shin
- Department of Anatomy, Brain Research Institute, Chungnam National University School of Medicine, Daejeon, South Korea
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Se Jeong Lee
- Department of Anatomy, Korea University College of Medicine, Seoul, South Korea
| | - Im Joo Rhyu
- Department of Anatomy, Korea University College of Medicine, Seoul, South Korea
| | - Min-Hee Yi
- Department of Neurology, Mayo Clinic, Rochester, USA
| | - Jinhyun Kim
- Department of Internal Medicine, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Dong Woon Kim
- Department of Anatomy, Brain Research Institute, Chungnam National University School of Medicine, Daejeon, South Korea
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Jaewon Beom
- Department of Rehabilitation Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
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Chernov AV, Hullugundi SK, Eddinger KA, Dolkas J, Remacle AG, Angert M, James BP, Yaksh TL, Strongin AY, Shubayev VI. A myelin basic protein fragment induces sexually dimorphic transcriptome signatures of neuropathic pain in mice. J Biol Chem 2020; 295:10807-10821. [PMID: 32532796 DOI: 10.1074/jbc.ra120.013696] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 06/11/2020] [Indexed: 02/06/2023] Open
Abstract
In the peripheral nerve, mechanosensitive axons are insulated by myelin, a multilamellar membrane formed by Schwann cells. Here, we offer first evidence that a myelin degradation product induces mechanical hypersensitivity and global transcriptomics changes in a sex-specific manner. Focusing on downstream signaling events of the functionally active 84-104 myelin basic protein (MBP(84-104)) fragment released after nerve injury, we demonstrate that exposing the sciatic nerve to MBP(84-104) via endoneurial injection produces robust mechanical hypersensitivity in female, but not in male, mice. RNA-seq and systems biology analysis revealed a striking sexual dimorphism in molecular signatures of the dorsal root ganglia (DRG) and spinal cord response, not observed at the nerve injection site. Mechanistically, intra-sciatic MBP(84-104) induced phospholipase C (PLC)-driven (females) and phosphoinositide 3-kinase-driven (males) phospholipid metabolism (tier 1). PLC/inositol trisphosphate receptor (IP3R) and estrogen receptor co-regulation in spinal cord yielded Ca2+-dependent nociceptive signaling induction in females that was suppressed in males (tier 2). IP3R inactivation by intrathecal xestospongin C attenuated the female-specific hypersensitivity induced by MBP(84-104). According to sustained sensitization in tiers 1 and 2, T cell-related signaling spreads to the DRG and spinal cord in females, but remains localized to the sciatic nerve in males (tier 3). These results are consistent with our previous finding that MBP(84-104)-induced pain is T cell-dependent. In summary, an autoantigenic peptide endogenously released in nerve injury triggers multisite, sex-specific transcriptome changes, leading to neuropathic pain only in female mice. MBP(84-104) acts through sustained co-activation of metabolic, estrogen receptor-mediated nociceptive, and autoimmune signaling programs.
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Affiliation(s)
- Andrei V Chernov
- Department of Anesthesiology, University of California, San Diego, La Jolla, California, USA .,Infectious & Inflammatory Disease Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California, USA
| | - Swathi K Hullugundi
- Department of Anesthesiology, University of California, San Diego, La Jolla, California, USA.,Veterans Affairs San Diego Healthcare System, La Jolla, California, USA
| | - Kelly A Eddinger
- Department of Anesthesiology, University of California, San Diego, La Jolla, California, USA
| | - Jennifer Dolkas
- Department of Anesthesiology, University of California, San Diego, La Jolla, California, USA.,Veterans Affairs San Diego Healthcare System, La Jolla, California, USA
| | - Albert G Remacle
- Infectious & Inflammatory Disease Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California, USA
| | - Mila Angert
- Department of Anesthesiology, University of California, San Diego, La Jolla, California, USA.,Veterans Affairs San Diego Healthcare System, La Jolla, California, USA
| | - Brian P James
- Infectious & Inflammatory Disease Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California, USA
| | - Tony L Yaksh
- Department of Anesthesiology, University of California, San Diego, La Jolla, California, USA
| | - Alex Y Strongin
- Infectious & Inflammatory Disease Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California, USA
| | - Veronica I Shubayev
- Department of Anesthesiology, University of California, San Diego, La Jolla, California, USA .,Veterans Affairs San Diego Healthcare System, La Jolla, California, USA
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Espino-Paisán L, Agudo-Jiménez T, Rosales-Martínez I, López-Cotarelo P, García-Martínez MÁ, Domínguez-Mozo MI, Pérez-Pérez S, Dieli-Crimi R, Comabella M, Urcelay E, Álvarez-Lafuente R. A Polymorphism Within the MBP Gene Is Associated With a Higher Relapse Number in Male Patients of Multiple Sclerosis. Front Immunol 2020; 11:771. [PMID: 32431704 PMCID: PMC7214696 DOI: 10.3389/fimmu.2020.00771] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 01/21/2020] [Accepted: 04/06/2020] [Indexed: 12/14/2022] Open
Abstract
Myelin basic protein (MBP) is thought to be one of the key autoantigens in multiple sclerosis (MS) development. A recent study described the association of the single nucleotide polymorphism (SNP) rs12959006, within the MBP gene, with a higher risk of relapse and worse prognosis. We aim at studying potential associations of this SNP to MS in an independent population. Clinical data of the first 5 years of the disease were collected retrospectively from 291 MS confirmed patients. MBP polymorphism rs12959006 was genotyped in all patients. Associations with EDSS, number of relapses and serology for Herpesvirus 6 (HHV-6) and Epstein Barr (EBV) viruses were studied. Lymphocyte activation measured by CD69 expression was also analyzed according to sex and rs12959006 genotype. The rs12959006 polymorphism contributed significantly to a higher number of relapses at 5 years after onset only in male patients (rs12959006∗TT β = 0.74 [0.36–1.09]; p = 7 × 10–5). Titers of anti-HHV6 IgG antibodies showed also a mild association with relapses, both in male and female patients (β = 0.01 [0.01–0.02]; p = 3.7 × 10–8). Both the genetic variation in MBP and HHV-6 infection aid in predicting a higher number of relapses during the first years of MS. The association described in MBP rs12959006∗T is exclusive to male patients.
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Affiliation(s)
- Laura Espino-Paisán
- Laboratorio de Investigación en Genética de Enfermedades Complejas, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Red Española de Esclerosis Múltiple (REEM), Madrid, Spain
| | - Teresa Agudo-Jiménez
- Laboratorio de Investigación en Genética de Enfermedades Complejas, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Red Española de Esclerosis Múltiple (REEM), Madrid, Spain
| | - Isabel Rosales-Martínez
- Laboratorio de Investigación en Genética de Enfermedades Complejas, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Red Española de Esclerosis Múltiple (REEM), Madrid, Spain
| | - Pilar López-Cotarelo
- Laboratorio de Investigación en Genética de Enfermedades Complejas, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Red Española de Esclerosis Múltiple (REEM), Madrid, Spain
| | - María Ángel García-Martínez
- Grupo de Investigación de Factores Ambientales en Enfermedades Degenerativas, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Red Española de Esclerosis Múltiple (REEM), Madrid, Spain
| | - María Inmaculada Domínguez-Mozo
- Grupo de Investigación de Factores Ambientales en Enfermedades Degenerativas, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Red Española de Esclerosis Múltiple (REEM), Madrid, Spain
| | - Silvia Pérez-Pérez
- Grupo de Investigación de Factores Ambientales en Enfermedades Degenerativas, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Red Española de Esclerosis Múltiple (REEM), Madrid, Spain
| | - Romina Dieli-Crimi
- Servicio de Inmunología, Hospital Universitari Vall d'Hebron (HUVH), Diagnostic Immunology, Vall d'Hebron Research Institute (VHIR), Barcelona, Spain
| | - Manuel Comabella
- Servei de Neurologia-Neuroimmunologia, Centre d'Esclerosi Múltiple de Catalunya (Cemcat), Institut de Recerca Vall d'Hebron (VHIR), Hospital Universitari Vall d'Hebron, Universitat Autònoma de Barcelona, Red Española de Esclerosis Múltiple (REEM), Barcelona, Spain
| | - Elena Urcelay
- Laboratorio de Investigación en Genética de Enfermedades Complejas, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Red Española de Esclerosis Múltiple (REEM), Madrid, Spain
| | - Roberto Álvarez-Lafuente
- Grupo de Investigación de Factores Ambientales en Enfermedades Degenerativas, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Red Española de Esclerosis Múltiple (REEM), Madrid, Spain
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40
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Träger J, Widder K, Kerth A, Harauz G, Hinderberger D. Effect of Cholesterol and Myelin Basic Protein (MBP) Content on Lipid Monolayers Mimicking the Cytoplasmic Membrane of Myelin. Cells 2020; 9:cells9030529. [PMID: 32106542 PMCID: PMC7140459 DOI: 10.3390/cells9030529] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 02/16/2020] [Accepted: 02/20/2020] [Indexed: 12/17/2022] Open
Abstract
Myelin basic protein (MBP) is located in the insulating covers of nerve cells in the brain and spinal cord. By interacting with lipid membranes, it is responsible for compaction of the myelin sheath in the central nervous system, which is weakened in demyelinating diseases. The lipid composition of the myelin leaflet has a high impact on the interaction between the membrane and MBP. Cholesterol is present in the cytoplasmic leaflet with a rather high amount of 44% (mol%). In this study, the focus is on the effect of cholesterol, mainly by varying its content, on the interaction of MBP with a lipid monolayer. Therefore, Langmuir lipid monolayers mimicking the cytoplasmic membrane of myelin and monolayers with variations of cholesterol content between 0% and 100% were measured at the air/water interface with additional imaging by fluorescence microscopy. All experiments were performed with and without bovine MBP to study the dependence of the interaction of the protein with the monolayers on the cholesterol content. The native amount of 44% cholesterol in the monolayer combines optima in the order of the monolayer (presumably correlating to compaction and thermodynamic stability) and protein interaction and shows unique features in comparison to lower or higher cholesterol contents.
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Affiliation(s)
- Jennica Träger
- Institut für Chemie, Martin-Luther-Universität Halle-Wittenberg, Von-Danckelmann-Platz 4, 06120 Halle (Saale), Germany; (J.T.); (K.W.); (A.K.)
- Interdisciplinary Research Center HALOmem at the Martin-Luther-Universität Halle-Wittenberg, 06120 Halle (Saale), Germany
| | - Katharina Widder
- Institut für Chemie, Martin-Luther-Universität Halle-Wittenberg, Von-Danckelmann-Platz 4, 06120 Halle (Saale), Germany; (J.T.); (K.W.); (A.K.)
- Interdisciplinary Research Center HALOmem at the Martin-Luther-Universität Halle-Wittenberg, 06120 Halle (Saale), Germany
| | - Andreas Kerth
- Institut für Chemie, Martin-Luther-Universität Halle-Wittenberg, Von-Danckelmann-Platz 4, 06120 Halle (Saale), Germany; (J.T.); (K.W.); (A.K.)
- Interdisciplinary Research Center HALOmem at the Martin-Luther-Universität Halle-Wittenberg, 06120 Halle (Saale), Germany
| | - George Harauz
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON N1G 2W1, Canada;
| | - Dariush Hinderberger
- Institut für Chemie, Martin-Luther-Universität Halle-Wittenberg, Von-Danckelmann-Platz 4, 06120 Halle (Saale), Germany; (J.T.); (K.W.); (A.K.)
- Interdisciplinary Research Center HALOmem at the Martin-Luther-Universität Halle-Wittenberg, 06120 Halle (Saale), Germany
- Correspondence: ; Tel.: +49-345-55-25230
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41
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Buniatian GH, Weiskirchen R, Weiss TS, Schwinghammer U, Fritz M, Seferyan T, Proksch B, Glaser M, Lourhmati A, Buadze M, Borkham-Kamphorst E, Gaunitz F, Gleiter CH, Lang T, Schaeffeler E, Tremmel R, Cynis H, Frey WH, Gebhardt R, Friedman SL, Mikulits W, Schwab M, Danielyan L. Antifibrotic Effects of Amyloid-Beta and Its Loss in Cirrhotic Liver. Cells 2020; 9:cells9020452. [PMID: 32089540 PMCID: PMC7072823 DOI: 10.3390/cells9020452] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 02/06/2020] [Accepted: 02/13/2020] [Indexed: 12/15/2022] Open
Abstract
The function and regulation of amyloid-beta (Aβ) in healthy and diseased liver remains unexplored. Because Aβ reduces the integrity of the blood-brain barrier we have examined its potential role in regulating the sinusoidal permeability of normal and cirrhotic liver. Aβ and key proteins that generate (beta-secretase 1 and presenilin-1) and degrade it (neprilysin and myelin basic protein) were decreased in human cirrhotic liver. In culture, activated hepatic stellate cells (HSC) internalized Aβ more efficiently than astrocytes and HSC degraded Aβ leading to suppressed expression of α-smooth muscle actin (α-SMA), collagen 1 and transforming growth factor β (TGFβ). Aβ also upregulated sinusoidal permeability marker endothelial NO synthase (eNOS) and decreased TGFβ in cultured human liver sinusoidal endothelial cells (hLSEC). Liver Aβ levels also correlate with the expression of eNOS in transgenic Alzheimer’s disease mice and in human and rodent cirrhosis/fibrosis. These findings suggest a previously unexplored role of Aβ in the maintenance of liver sinusoidal permeability and in protection against cirrhosis/fibrosis via attenuation of HSC activation.
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Affiliation(s)
- Gayane Hrachia Buniatian
- Department of Clinical Pharmacology, University Hospital of Tübingen, 72076 Tübingen, Germany; (U.S.); (M.F.); (B.P.); (M.G.); (A.L.); (M.B.); (C.H.G.); (M.S.)
- H. Buniatian Institute of Biochemistry, National Academy of Sciences of the Republic of Armenia (NAS RA), Yerevan 0014, Armenia;
- Correspondence: (G.H.B.); (L.D.)
| | - Ralf Weiskirchen
- Institute of Molecular Pathobiochemistry, Experimental Gene Therapy and Clinical Chemistry, RWTH University Hospital Aachen, 52074 Aachen, Germany; (R.W.); (E.B.-K.)
| | - Thomas S. Weiss
- Children’s University Hospital (KUNO), University of Regensburg, 93053 Regensburg, Germany;
| | - Ute Schwinghammer
- Department of Clinical Pharmacology, University Hospital of Tübingen, 72076 Tübingen, Germany; (U.S.); (M.F.); (B.P.); (M.G.); (A.L.); (M.B.); (C.H.G.); (M.S.)
| | - Martin Fritz
- Department of Clinical Pharmacology, University Hospital of Tübingen, 72076 Tübingen, Germany; (U.S.); (M.F.); (B.P.); (M.G.); (A.L.); (M.B.); (C.H.G.); (M.S.)
| | - Torgom Seferyan
- H. Buniatian Institute of Biochemistry, National Academy of Sciences of the Republic of Armenia (NAS RA), Yerevan 0014, Armenia;
| | - Barbara Proksch
- Department of Clinical Pharmacology, University Hospital of Tübingen, 72076 Tübingen, Germany; (U.S.); (M.F.); (B.P.); (M.G.); (A.L.); (M.B.); (C.H.G.); (M.S.)
| | - Michael Glaser
- Department of Clinical Pharmacology, University Hospital of Tübingen, 72076 Tübingen, Germany; (U.S.); (M.F.); (B.P.); (M.G.); (A.L.); (M.B.); (C.H.G.); (M.S.)
| | - Ali Lourhmati
- Department of Clinical Pharmacology, University Hospital of Tübingen, 72076 Tübingen, Germany; (U.S.); (M.F.); (B.P.); (M.G.); (A.L.); (M.B.); (C.H.G.); (M.S.)
| | - Marine Buadze
- Department of Clinical Pharmacology, University Hospital of Tübingen, 72076 Tübingen, Germany; (U.S.); (M.F.); (B.P.); (M.G.); (A.L.); (M.B.); (C.H.G.); (M.S.)
| | - Erawan Borkham-Kamphorst
- Institute of Molecular Pathobiochemistry, Experimental Gene Therapy and Clinical Chemistry, RWTH University Hospital Aachen, 52074 Aachen, Germany; (R.W.); (E.B.-K.)
| | - Frank Gaunitz
- Department of Neurosurgery, University Hospital of Leipzig, 04103 Leipzig, Germany;
| | - Christoph H. Gleiter
- Department of Clinical Pharmacology, University Hospital of Tübingen, 72076 Tübingen, Germany; (U.S.); (M.F.); (B.P.); (M.G.); (A.L.); (M.B.); (C.H.G.); (M.S.)
| | - Thomas Lang
- Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology, 70376 Stuttgart, Germany, and University of Tuebingen, 72076 Tuebingen, Germany; (T.L.); (E.S.); (R.T.)
| | - Elke Schaeffeler
- Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology, 70376 Stuttgart, Germany, and University of Tuebingen, 72076 Tuebingen, Germany; (T.L.); (E.S.); (R.T.)
| | - Roman Tremmel
- Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology, 70376 Stuttgart, Germany, and University of Tuebingen, 72076 Tuebingen, Germany; (T.L.); (E.S.); (R.T.)
| | - Holger Cynis
- Department of Drug Design and Target Validation, Fraunhofer Institute for Cell Therapy and Immunology, 06120 Halle, Germany;
| | - William H. Frey
- Center for Memory & Aging, HealthPartners Neuroscience Center, St. Paul, MN 55130, USA;
| | - Rolf Gebhardt
- Rudolf-Schönheimer Institute of Biochemistry, Faculty of Medicine, University of Leipzig, 04103 Leipzig, Germany;
| | - Scott L. Friedman
- Division of Liver Diseases, Icahn School of Medicine at Mount Sinai, New York, NY 10029-6574, USA;
| | - Wolfgang Mikulits
- Department of Medicine I, Institute of Cancer Research, Comprehensive Cancer Center, Medical University of Vienna, Vienna 1090, Austria;
| | - Matthias Schwab
- Department of Clinical Pharmacology, University Hospital of Tübingen, 72076 Tübingen, Germany; (U.S.); (M.F.); (B.P.); (M.G.); (A.L.); (M.B.); (C.H.G.); (M.S.)
- Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology, 70376 Stuttgart, Germany, and University of Tuebingen, 72076 Tuebingen, Germany; (T.L.); (E.S.); (R.T.)
- Department of Pharmacy and Biochemistry, University of Tuebingen, 72076 Tuebingen, Germany
- Departments of Biochemistry and Clinical Pharmacology, and Neuroscience Laboratory, Yerevan State Medical University, Yerevan 0025, Armenia
| | - Lusine Danielyan
- Department of Clinical Pharmacology, University Hospital of Tübingen, 72076 Tübingen, Germany; (U.S.); (M.F.); (B.P.); (M.G.); (A.L.); (M.B.); (C.H.G.); (M.S.)
- Departments of Biochemistry and Clinical Pharmacology, and Neuroscience Laboratory, Yerevan State Medical University, Yerevan 0025, Armenia
- Correspondence: (G.H.B.); (L.D.)
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Mamedov A, Vorobyeva N, Filimonova I, Zakharova M, Kiselev I, Bashinskaya V, Baulina N, Boyko A, Favorov A, Kulakova O, Ziganshin R, Smirnov I, Poroshina A, Shilovskiy I, Khaitov M, Sykulev Y, Favorova O, Vlassov V, Gabibov A, Belogurov A. Protective Allele for Multiple Sclerosis HLA-DRB1*01:01 Provides Kinetic Discrimination of Myelin and Exogenous Antigenic Peptides. Front Immunol 2020; 10:3088. [PMID: 32010139 PMCID: PMC6978714 DOI: 10.3389/fimmu.2019.03088] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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: 05/18/2018] [Accepted: 12/17/2019] [Indexed: 12/15/2022] Open
Abstract
Risk of the development of multiple sclerosis (MS) is known to be increased in individuals bearing distinct class II human leukocyte antigen (HLA) variants, whereas some of them may have a protective effect. Here we analyzed distribution of a highly polymorphous HLA-DRB1 locus in more than one thousand relapsing-remitting MS patients and healthy individuals of Russian ethnicity. Carriage of HLA-DRB1*15 and HLA-DRB1*03 alleles was associated with MS risk, whereas carriage of HLA-DRB1*01 and HLA-DRB1*11 was found to be protective. Analysis of genotypes revealed the compensatory effect of risk and resistance alleles in trans. We have identified previously unknown MBP153-161 peptide located at the C-terminus of MBP protein and MBP90-98 peptide that bound to recombinant HLA-DRB1*01:01 protein with affinity comparable to that of classical antigenic peptide 306-318 from the hemagglutinin (HA) of the influenza virus demonstrating the ability of HLA-DRB1*01:01 to present newly identified MBP153-161 and MBP90-98 peptides. Measurements of kinetic parameters of MBP and HA peptides binding to HLA-DRB1*01:01 catalyzed by HLA-DM revealed a significantly lower rate of CLIP exchange for MBP153-161 and MBP90-98 peptides as opposed to HA peptide. Analysis of the binding of chimeric MBP-HA peptides demonstrated that the observed difference between MBP153-161, MBP90-98, and HA peptide epitopes is caused by the lack of anchor residues in the C-terminal part of the MBP peptides resulting in a moderate occupation of P6/7 and P9 pockets of HLA-DRB1*01:01 by MBP153-161 and MBP90-98 peptides in contrast to HA308-316 peptide. This leads to the P1 and P4 docking failure and rapid peptide dissociation and release of empty HLA-DM-HLA-DR complex. We would like to propose that protective properties of the HLA-DRB1*01 allele could be directly linked to the ability of HLA-DRB1*01:01 to kinetically discriminate between antigenic exogenous peptides and endogenous MBP derived peptides.
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Affiliation(s)
- Azad Mamedov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | | | - Ioanna Filimonova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Maria Zakharova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia.,Pirogov Russian National Research Medical University, Moscow, Russia
| | - Ivan Kiselev
- Pirogov Russian National Research Medical University, Moscow, Russia
| | | | - Natalia Baulina
- Pirogov Russian National Research Medical University, Moscow, Russia
| | - Alexey Boyko
- Pirogov Russian National Research Medical University, Moscow, Russia.,Neuroimmunological Department of the Federal Center of Cerebrovascular Diseases and Stroke, Moscow, Russia
| | - Alexander Favorov
- Sidney Kimmel Comprehensive Cancer Center, The Johns Hopkins University, Baltimore, MD, United States.,Vavilov Institute of General Genetics, Russian Academy of Sciences, Moscow, Russia
| | - Olga Kulakova
- Pirogov Russian National Research Medical University, Moscow, Russia
| | - Rustam Ziganshin
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Ivan Smirnov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia.,Institute of Fundamental Medicine and Biology, Kazan (Volga) Federal University, Kazan, Russia
| | - Alina Poroshina
- National Research Center Institute of Immunology FMBA of Russia, Moscow, Russia
| | - Igor Shilovskiy
- National Research Center Institute of Immunology FMBA of Russia, Moscow, Russia
| | - Musa Khaitov
- National Research Center Institute of Immunology FMBA of Russia, Moscow, Russia
| | - Yuri Sykulev
- Department of Microbiology, Thomas Jefferson University, Philadelphia, PA, United States
| | - Olga Favorova
- Pirogov Russian National Research Medical University, Moscow, Russia
| | - Valentin Vlassov
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia
| | - Alexander Gabibov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia.,Department of Fundamental Medicine, Lomonosov Moscow State University, Moscow, Russia
| | - Alexey Belogurov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia.,Department of Fundamental Medicine, Lomonosov Moscow State University, Moscow, Russia
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Li M, Cui MM, Kenechukwu NA, Gu YW, Chen YL, Zhong SJ, Gao YT, Cao XY, Wang L, Liu FM, Wen XR. Rosmarinic acid ameliorates hypoxia/ischemia induced cognitive deficits and promotes remyelination. Neural Regen Res 2020; 15:894-902. [PMID: 31719255 PMCID: PMC6990785 DOI: 10.4103/1673-5374.268927] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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] [Indexed: 12/13/2022] Open
Abstract
Rosmarinic acid, a common ester extracted from Rosemary, Perilla frutescens, and Salvia miltiorrhiza Bunge, has been shown to have protective effects against various diseases. This is an investigation into whether rosmarinic acid can also affect the changes of white matter fibers and cognitive deficits caused by hypoxic injury. The right common carotid artery of 3-day-old rats was ligated for 2 hours. The rats were then prewarmed in a plastic container with holes in the lid, which was placed in 37°C water bath for 30 minutes. Afterwards, the rats were exposed to an atmosphere with 8% O2 and 92% N2 for 30 minutes to establish the perinatal hypoxia/ischemia injury models. The rat models were intraperitoneally injected with rosmarinic acid 20 mg/kg for 5 consecutive days. At 22 days after birth, rosmarinic acid was found to improve motor, anxiety, learning and spatial memory impairments induced by hypoxia/ischemia injury. Furthermore, rosmarinic acid promoted the proliferation of oligodendrocyte progenitor cells in the subventricular zone. After hypoxia/ischemia injury, rosmarinic acid reversed to some extent the downregulation of myelin basic protein and the loss of myelin sheath in the corpus callosum of white matter structure. Rosmarinic acid partially slowed down the expression of oligodendrocyte marker Olig2 and myelin basic protein and the increase of oligodendrocyte apoptosis marker inhibitors of DNA binding 2. These data indicate that rosmarinic acid ameliorated the cognitive dysfunction after perinatal hypoxia/ischemia injury by improving remyelination in corpus callosum. This study was approved by the Animal Experimental Ethics Committee of Xuzhou Medical University, China (approval No. 20161636721) on September 16, 2017.
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Affiliation(s)
- Man Li
- Department of Genetics, Xuzhou Medical University, Xuzhou, Jiangsu Province, China
| | - Miao-Miao Cui
- Department of Genetics, Xuzhou Medical University, Xuzhou, Jiangsu Province, China
| | | | - Yi-Wei Gu
- Department of Urology, the First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Yu-Lin Chen
- Department of Genetics, Xuzhou Medical University, Xuzhou, Jiangsu Province, China
| | - Si-Jing Zhong
- Xuzhou Medical University Clinical Medical College, Xuzhou, Jiangsu Province, China
| | - Yu-Ting Gao
- Department of Clinical Laboratory, Xuzhou Medical University, Xuzhou, Jiangsu Province, China
| | - Xue-Yan Cao
- Department of Urology, the First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Li Wang
- Department of Urology, the First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Fu-Min Liu
- Department of Genetics, Xuzhou Medical University, Xuzhou, Jiangsu Province, China
| | - Xiang-Ru Wen
- Research Center for Neurobiology and Department of Neurobiology, Xuzhou Medical University, Xuzhou, Jiangsu Province, China
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Lammert DB, Miedema D, Ochotorena J, Dosa N, Petropoulou K, Lebel RR, Sakonju A. Central and peripheral dysmyelination in a 3-year-old girl with ring chromosome 18. Clin Case Rep 2019; 7:2087-2091. [PMID: 31788257 PMCID: PMC6878035 DOI: 10.1002/ccr3.2426] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 06/01/2019] [Revised: 08/03/2019] [Accepted: 08/12/2019] [Indexed: 11/22/2022] Open
Abstract
Myelin basic protein (MBP) contributes to peripheral and central nervous system myelin. Developmental myelinopathies exist on a clinical spectrum, but MBP is not included on leukodystrophy or CMT gene panels. This ring chromosome 18 case presents serial MRI and EMG/NCS, shedding light on the early clinical course of the disorder.
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Affiliation(s)
- Dawn Brianna Lammert
- Department of PediatricsJohns Hopkins HospitalBaltimoreMaryland
- Present address:
Department of PediatricsJohns Hopkins HospitalBaltimoreMaryland
| | | | - Josiree Ochotorena
- Child and Adolescent Health AssociatesSamaritan Health SystemsWatertownNew York
| | - Nienke Dosa
- Center for Development, Behavior, and GeneticsSUNY Upstate Medical UniversitySyracuseNew York
| | | | - Roger Robert Lebel
- Center for Development, Behavior, and GeneticsSUNY Upstate Medical UniversitySyracuseNew York
| | - Ai Sakonju
- Department of NeurologySUNY Upstate Medical UniversitySyracuseNew York
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Soustelle L, Antal MC, Lamy J, Rousseau F, Armspach JP, Loureiro de Sousa P. Correlations of quantitative MRI metrics with myelin basic protein (MBP) staining in a murine model of demyelination. NMR Biomed 2019; 32:e4116. [PMID: 31225675 DOI: 10.1002/nbm.4116] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 04/17/2019] [Accepted: 04/21/2019] [Indexed: 06/09/2023]
Abstract
Myelin imaging in the central nervous system is essential for monitoring pathologies involving white matter alterations. Various quantitative MRI protocols relying on the modeling of the interactions of water protons with myelinated tissues have shown sensitivities in case of myelin disruption. Some extracted model parameters are more sensitive to demyelination, such as the bound pool fraction (f) in quantitative magnetization transfer imaging (qMTI), the radial diffusivity in diffusion tensor imaging (DTI), and the myelin water fraction (MWF) in myelin water imaging (MWI). A 3D ultrashort echo time (UTE) sequence within an appropriate water suppression condition (Diff-UTE) is also considered for the direct visualization of the myelin semi-solid matrix (Diff-UTE normalized signal; rSPF). In this paper, we aimed at assessing the sensitivities and correlations of the parameters mentioned above to an immuno-histological study of the myelin basic protein (MBP) in a murine model of demyelination at 7 T. We demonstrated a high sensitivity of the MRI metrics to demyelination, and strong Spearman correlations in the corpus callosum between histology, macromolecular proton fraction (ρ>0.87) and Diff-UTE signal (ρ>0.76), but moderate ones with radial diffusivity and MWF (|ρ|<0.70).
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Affiliation(s)
- Lucas Soustelle
- Université de Strasbourg, CNRS, ICube, FMTS, Strasbourg, France
| | - Maria C Antal
- Université de Strasbourg, CNRS, ICube, FMTS, Strasbourg, France
| | - Julien Lamy
- Université de Strasbourg, CNRS, ICube, FMTS, Strasbourg, France
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46
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张 昕, 林 春, 郭 培, 覃 军, 覃 秀, 梁 伟. [Effect of propofol on myelin basic protein expression and myelination of oligodendrocytes in neonatal SD rats]. Nan Fang Yi Ke Da Xue Xue Bao 2019; 39:950-956. [PMID: 31511216 PMCID: PMC6765605 DOI: 10.12122/j.issn.1673-4254.2019.08.12] [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] [Subscribe] [Scholar Register] [Received: 03/09/2019] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To investigate the effects of different doses of propofol on myelin basic protein (MBP) synthesis and myelination of oligodendrocytes in neonatal SD rats. METHODS A total of 57 neonatal SD rats (7 days old) were randomly divided into control group (n=13), vehicle (fat emulsion) group (n=5), and 25, 50 and 100 mg/kg propofol groups (n=13 in each group). Eight hours after a single intraperitoneal injection of propofol or the vehicle, the rats were examined for expressions of mbp mRNA, caspase-3 mRNA, cleaved caspase-3 and MBP in the brain tissues using qPCR and Western blotting. Immunofluorescence assay was used to detect the apoptosis of the oligodendrocytes at 8 h after the injection and the myelination of the corpus callosum and internal capsule at 24 h. RESULTS Compared with the control group, the neonatal rats with propofol injections showed significantly down-regulated expressions of mbp mRNA and MBP protein in the brain tissue (P < 0.05). Propofol dose-dependently increased the transcription level of caspase-3 and the protein levels of cleaved caspase-3 at 8 h after the injection (P < 0.05). Propofol injection significantly increased the apoptosis of the oligodendrocytes, and the effect was significantly stronger in 50 and 100 mg/kg groups than in 25 mg/kg group (P < 0.05). At 24 h after propofol injection, myelin formation was significantly decreased in the corpus callosum of the neonatal rats in 100 mg/kg propofol group and in the internal capsule in 50 and 100 mg/kg groups (P < 0.05). CONCLUSIONS In neonatal SD rats, propofol can dose-dependently promote oligodendrocyte apoptosis, decrease MBP expressions in the brain, and suppress myelin formation in the corpus callosum and the internal capsule.
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Affiliation(s)
- 昕 张
- 南方医科大学南方医院麻醉科,广东 广州 510515Department of Anesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - 春水 林
- 南方医科大学南方医院麻醉科,广东 广州 510515Department of Anesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - 培培 郭
- 南方医科大学南方医院麻醉科,广东 广州 510515Department of Anesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - 军 覃
- 深圳市龙岗区骨科医院麻醉科,广东 深圳 518116Department of Anesthesiology, Longgang Orthopedics Hospital, Shenzhen 518116, China
| | - 秀秀 覃
- 南方医科大学南方医院麻醉科,广东 广州 510515Department of Anesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - 伟东 梁
- 南方医科大学南方医院麻醉科,广东 广州 510515Department of Anesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
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47
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Lomakin YA, Kudryaeva AA, Kostin NN, Terekhov SS, Kaminskaya AN, Zakharova MN, Ivanova MV, Simaniv TO, Gabibov AG, Belogurov AA Jr. Differential Diagnostics of Active Progressing Multiple Sclerosis Using a Fluorescent Biomarker with Resonance Energy Transfer. Bull Exp Biol Med 2019; 167:329-34. [PMID: 31346868 DOI: 10.1007/s10517-019-04520-1] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Indexed: 10/26/2022]
Abstract
Previous data showed that myelin-reactive autoantibodies found in patients with multiple sclerosis and mice with experimental autoimmune encephalomyelitis recognize and hydrolyze various fragments of myelin basic protein (MBP). Moreover, antibody-mediated cleavage of the encephalithogenic fragment MBP81-103 flanked with two fluorescent proteins can serve as a new biomarker of multiple sclerosis. Here we describe creation of the next generation of this biomarker based on antibody-dependent degradation of a new chemically synthesized fluorescent substrate with resonance energy transfer that contains fluorophore Cy5 and quencher QXL680 separated by MBP81-99 protein (Cy5-MBP81-99-QXL680). This substrate is degraded during incubation with purified antibodies and B cells from patients with multiple sclerosis, but not healthy volunteers.
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48
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Cao J, Hu Y, Shazeeb MS, Pedraza CE, Pande N, Weinstock D, Polites GH, Zhang W, Chandross KJ, Ying X. In Vivo Optical Imaging of Myelination Events in a Myelin Basic Protein Promoter-Driven Luciferase Transgenic Mouse Model. ASN Neuro 2019; 10:1759091418777329. [PMID: 29806482 PMCID: PMC5987236 DOI: 10.1177/1759091418777329] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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] [Indexed: 11/16/2022] Open
Abstract
The compact myelin sheath is important for axonal function, and its loss
can lead to neuronal cell death and irreversible functional deficits.
Myelin is vulnerable to a variety of metabolic, toxic, and autoimmune
insults. In diseases like multiple sclerosis, there is currently no
therapy to stop myelin loss, underscoring the need for neuroprotective
and remyelinating therapies. Noninvasive, robust techniques are also
needed to confirm the effect of such therapies in animal models. This
article describes the generation, characterization, and potential uses
for a myelin basic protein-luciferase (MBP-luci) transgenic mouse
model, in which the firefly luciferase reporter gene is selectively
controlled by the MBP promoter. In vivo
bioluminescence imaging can be used to visualize and quantify
demyelination and remyelination at the transcriptional level,
noninvasively, and in real time. Transgenic mice were assessed in the
cuprizone-induced model of demyelination, and luciferase activity
highly correlated with demyelination and remyelination events as
confirmed by both magnetic resonance imaging and postmortem
histological analysis. Furthermore, MBP-luci mice demonstrated
enhanced luciferase signal and remyelination in the cuprizone model
after treatment with a peroxisome proliferator activated
receptor-delta selective agonist and quetiapine. Imaging sensitivity
was further enhanced by using CycLuc 1, a luciferase substrate, which
has greater blood–brain barrier penetration. We demonstrated the
utility of MBP-luci model in tracking myelin changes in real time and
supporting target and therapeutic validation efforts.
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Affiliation(s)
- James Cao
- 1 Translational In Vivo Model, Global Research Platform, Sanofi R&D, Framingham, MA, USA
| | - Yanping Hu
- 2 Multiple Sclerosis Cluster, Neuroscience Research, Sanofi R&D, Framingham, MA, USA
| | | | - Carlos E Pedraza
- 2 Multiple Sclerosis Cluster, Neuroscience Research, Sanofi R&D, Framingham, MA, USA
| | - Nilesh Pande
- 2 Multiple Sclerosis Cluster, Neuroscience Research, Sanofi R&D, Framingham, MA, USA
| | | | | | - Wenfei Zhang
- 5 Biostatistics and Programming, Sanofi R&D, Framingham, MA, USA
| | | | - Xiaoyou Ying
- 1 Translational In Vivo Model, Global Research Platform, Sanofi R&D, Framingham, MA, USA
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49
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Tian Z, Xu L, Chen Q, Feng R, Lu H, Tan H, Kang J, Wang Y, Yan H. Treatment of Surgical Brain Injury by Immune Tolerance Induced by Peripheral Intravenous Injection of Biotargeting Nanoparticles Loaded With Brain Antigens. Front Immunol 2019; 10:743. [PMID: 31024567 PMCID: PMC6460504 DOI: 10.3389/fimmu.2019.00743] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [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: 11/24/2018] [Accepted: 03/19/2019] [Indexed: 12/29/2022] Open
Abstract
Once excessive, neurological disorders associated with inflammatory conditions will inevitably cause secondary inflammatory damage to brain tissue. Immunosuppressive therapy can reduce the inflammatory state, but resulting infections can expose the patient to greater risk. Using specific immune tolerance organs or tissues from the body, brain antigen immune tolerance treatment can create a minimal immune response to the brain antigens that does not excessively affect the body's immunity. However, commonly used immune tolerance treatment approaches, such as those involving the nasal, gastrointestinal mucosa, thymus or liver portal vein injections, affect the clinical conversion of the therapy due to uncertain drug absorption, or inconvenient routes of administration. If hepatic portal intravenous injections of brain antigens could be replaced by normal peripheral venous infusion, the convenience of immune tolerance treatment could certainly be greatly increased. We attempted to encapsulate brain antigens with minimally immunogenic nanomaterials, to control the sizes of nanoparticles within the range of liver Kupffer cell phagocytosis and to coat the antigens with a coating material that had an affinity for liver cells. We injected these liver drug-loaded nanomaterials via peripheral intravenous injection. With the use of microparticles with liver characteristics, the brain antigens were transported into the liver out of the detection of immune armies in the blood. This approach has been demonstrated in rat models of surgical brain injury. It has been proven that the immune tolerance of brain antigens can be accomplished by peripheral intravenous infusion to achieve the effect of treating brain trauma after operations, which simplifies the clinical operation and could elicit substantial improvements in the future.
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Affiliation(s)
- Zhen Tian
- Graduate School of Tianjin Medical University, Tianjin, China
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases, Tianjin, China
| | - Lixia Xu
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases, Tianjin, China
| | - Qian Chen
- Graduate School of Tianjin Medical University, Tianjin, China
| | - Ruoyang Feng
- Graduate School of Tianjin Medical University, Tianjin, China
| | - Hao Lu
- Graduate School of Tianjin Medical University, Tianjin, China
| | - Huajun Tan
- Graduate School of Tianjin Medical University, Tianjin, China
| | - Jianming Kang
- Department of Neurosurgery, Tianjin Huanhu Hospital, Tianjin, China
| | - Yinsong Wang
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), Research Center of Basic Medical Science, School of Pharmacy, Tianjin Medical University, Tianjin, China
| | - Hua Yan
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases, Tianjin, China
- Department of Neurosurgery, Tianjin Huanhu Hospital, Tianjin, China
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50
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Lariosa-Willingham K, Leonoudakis D. Using Acutely Dissociated and Purified Oligodendrocyte Precursor Cells for High-Throughput Drug Screening to Identify Compounds that Promote Oligodendrocyte Differentiation. ACTA ACUST UNITED AC 2019; 79:e49. [PMID: 29924487 DOI: 10.1002/cpcb.49] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Multiple sclerosis (MS) is an autoimmune disease that involves an immune-mediated inflammatory response in the central nervous system and optic nerve resulting in demyelination and neural degeneration, the cause of which is unknown. The adult central nervous system has the capacity to remyelinate axons by generating new oligodendrocytes (OLs). To identify clinical candidate compounds that may promote remyelination, we have developed a high-throughput screening (HTS) assay to identify compounds that promote the differentiation of oligodendrocyte precursor cells (OPCs) into OLs. Using acutely dissociated and purified rat OPCs coupled with immunofluorescent image quantification, we have developed an OL differentiation assay. Building on OPC culturing techniques developed over the past 30 years, we have scaled up the isolation and purification process to generate sufficient quantities for HTS. We then describe the use of these acutely derived OPCs in an assay designed to identify compounds that promote differentiation into OLs. We have validated this assay with a known promoter of differentiation, thyroid hormone, and subsequently used the assay to screen the NIH clinical collection library (Lariosa-Willingham, et al., 2016). © 2018 by John Wiley & Sons, Inc.
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