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Gcwensa NZ, Russell DL, Long KY, Brzozowski CF, Liu X, Gamble KL, Cowell RM, Volpicelli-Daley LA. Excitatory synaptic structural abnormalities produced by templated aggregation of α-syn in the basolateral amygdala. Neurobiol Dis 2024; 199:106595. [PMID: 38972360 DOI: 10.1016/j.nbd.2024.106595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Revised: 07/03/2024] [Accepted: 07/03/2024] [Indexed: 07/09/2024] Open
Abstract
Parkinson's disease (PD) and Dementia with Lewy bodies (DLB) are characterized by neuronal α-synuclein (α-syn) inclusions termed Lewy Pathology, which are abundant in the amygdala. The basolateral amygdala (BLA), in particular, receives projections from the thalamus and cortex. These projections play a role in cognition and emotional processing, behaviors which are impaired in α-synucleinopathies. To understand if and how pathologic α-syn impacts the BLA requires animal models of α-syn aggregation. Injection of α-syn pre-formed fibrils (PFFs) into the striatum induces robust α-syn aggregation in excitatory neurons in the BLA that corresponds with reduced contextual fear conditioning. At early time points after aggregate formation, cortico-amygdala excitatory transmission is abolished. The goal of this project was to determine if α-syn inclusions in the BLA induce synaptic degeneration and/or morphological changes. In this study, we used C57BL/6 J mice injected bilaterally with PFFs in the dorsal striatum to induce α-syn aggregate formation in the BLA. A method was developed using immunofluorescence and three-dimensional reconstruction to analyze excitatory cortico-amygdala and thalamo-amygdala presynaptic terminals closely juxtaposed to postsynaptic densities. The abundance and morphology of synapses were analyzed at 6- or 12-weeks post-injection of PFFs. α-Syn aggregate formation in the BLA did not cause a significant loss of synapses, but cortico-amygdala and thalamo-amygdala presynaptic terminals and postsynaptic densities with aggregates of α-syn show increased volumes, similar to previous findings in human DLB cortex, and in non-human primate models of PD. Transmission electron microscopy showed that asymmetric synapses in mice with PFF-induced α-syn aggregates have reduced synaptic vesicle intervesicular distances, similar to a recent study showing phospho-serine-129 α-syn increases synaptic vesicle clustering. Thus, pathologic α-syn causes major alterations to synaptic architecture in the BLA, potentially contributing to behavioral impairment and amygdala dysfunction observed in synucleinopathies.
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Affiliation(s)
- Nolwazi Z Gcwensa
- Center for Neurodegeneration and Experimental Therapeutics, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
| | - Dreson L Russell
- Center for Neurodegeneration and Experimental Therapeutics, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
| | - Khaliah Y Long
- Center for Neurodegeneration and Experimental Therapeutics, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
| | - Charlotte F Brzozowski
- Center for Neurodegeneration and Experimental Therapeutics, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
| | - Xinran Liu
- Center for Cellular and Molecular Imaging, Yale University School of Medicine, New Haven, CT 06510, USA.
| | - Karen L Gamble
- Department of Psychiatry and Neurobiology, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
| | - Rita M Cowell
- Center for Neurodegeneration and Experimental Therapeutics, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
| | - Laura A Volpicelli-Daley
- Center for Neurodegeneration and Experimental Therapeutics, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
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2
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Gcwensa NZ, Russell DL, Long KY, Brzozowski CF, Liu X, Gamble KL, Cowell RM, Volpicelli-Daley LA. Cortico-amygdala synaptic structural abnormalities produced by templated aggregation of α-synuclein. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.15.594419. [PMID: 38798467 PMCID: PMC11118572 DOI: 10.1101/2024.05.15.594419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Parkinson's disease (PD) and Dementia with Lewy bodies (DLB) are characterized by neuronal α-synuclein (α-syn) inclusions termed Lewy Pathology, which are abundant in the amygdala. The basolateral amygdala (BLA), in particular, receives projections from the thalamus and cortex. These projections play a role in cognition and emotional processing, behaviors which are impaired in α-synucleinopathies. To understand if and how pathologic α-syn impacts the BLA requires animal models of α-syn aggregation. Injection of α-synuclein pre-formed fibrils (PFFs) into the striatum induces robust α-synuclein aggregation in excitatory neurons in the BLA that corresponds with reduced contextual fear conditioning. At early time points after aggregate formation, cortico-amygdala excitatory transmission is abolished. The goal of this project was to determine if α-syn inclusions in the BLA induce synaptic degeneration and/or morphological changes. In this study, we used C57BL/6J mice injected bilaterally with PFFs in the dorsal striatum to induce α-syn aggregate formation in the BLA. A method was developed using immunofluorescence and three-dimensional reconstruction to analyze excitatory cortico-amygdala and thalamo-amygdala presynaptic terminals closely juxtaposed to postsynaptic densities. The abundance and morphology of synapses were analyzed at 6- or 12-weeks post-injection of PFFs. α-Syn aggregate formation in the BLA did not cause a significant loss of synapses, but cortico-amygdala and thalamo-amygdala presynaptic terminals and postsynaptic densities with aggregates of α-synuclein show increased volumes, similar to previous findings in human DLB cortex, and in non-human primate models of PD. Transmission electron microscopy showed that PFF-injected mice showed reduced intervesicular distances similar to a recent study showing phospho-serine-129 α-synuclein increases synaptic vesicle clustering. Thus, pathologic α-synuclein causes major alterations to synaptic architecture in the BLA, potentially contributing to behavioral impairment and amygdala dysfunction observed in synucleinopathies.
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3
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Edens BM, Stundl J, Urrutia HA, Bronner ME. Neural crest origin of sympathetic neurons at the dawn of vertebrates. Nature 2024; 629:121-126. [PMID: 38632395 DOI: 10.1038/s41586-024-07297-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 03/11/2024] [Indexed: 04/19/2024]
Abstract
The neural crest is an embryonic stem cell population unique to vertebrates1 whose expansion and diversification are thought to have promoted vertebrate evolution by enabling emergence of new cell types and structures such as jaws and peripheral ganglia2. Although jawless vertebrates have sensory ganglia, convention has it that trunk sympathetic chain ganglia arose only in jawed vertebrates3-8. Here, by contrast, we report the presence of trunk sympathetic neurons in the sea lamprey, Petromyzon marinus, an extant jawless vertebrate. These neurons arise from sympathoblasts near the dorsal aorta that undergo noradrenergic specification through a transcriptional program homologous to that described in gnathostomes. Lamprey sympathoblasts populate the extracardiac space and extend along the length of the trunk in bilateral streams, expressing the catecholamine biosynthetic pathway enzymes tyrosine hydroxylase and dopamine β-hydroxylase. CM-DiI lineage tracing analysis further confirmed that these cells derive from the trunk neural crest. RNA sequencing of isolated ammocoete trunk sympathoblasts revealed gene profiles characteristic of sympathetic neuron function. Our findings challenge the prevailing dogma that posits that sympathetic ganglia are a gnathostome innovation, instead suggesting that a late-developing rudimentary sympathetic nervous system may have been characteristic of the earliest vertebrates.
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Affiliation(s)
- Brittany M Edens
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Jan Stundl
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA
- Faculty of Fisheries and Protection of Waters, University of South Bohemia in Ceske Budejovice, Vodnany, Czech Republic
| | - Hugo A Urrutia
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Marianne E Bronner
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA.
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Luo W, Egger M, Cruz-Ochoa N, Tse A, Maloveczky G, Tamás B, Lukacsovich D, Seng C, Amrein I, Lukacsovich T, Wolfer D, Földy C. Activation of feedforward wiring in adult hippocampal neurons by the basic-helix-loop-helix transcription factor Ascl4. PNAS NEXUS 2024; 3:pgae174. [PMID: 38711810 PMCID: PMC11071515 DOI: 10.1093/pnasnexus/pgae174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Accepted: 04/17/2024] [Indexed: 05/08/2024]
Abstract
Although evidence indicates that the adult brain retains a considerable capacity for circuit formation, adult wiring has not been broadly considered and remains poorly understood. In this study, we investigate wiring activation in adult neurons. We show that the basic-helix-loop-helix transcription factor Ascl4 can induce wiring in different types of hippocampal neurons of adult mice. The new axons are mainly feedforward and reconfigure synaptic weights in the circuit. Mice with the Ascl4-induced circuits do not display signs of pathology and solve spatial problems equally well as controls. Our results demonstrate reprogrammed connectivity by a single transcriptional factor and provide insights into the regulation of brain wiring in adults.
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Affiliation(s)
- Wenshu Luo
- Laboratory of Neural Connectivity, Brain Research Institute, Faculties of Medicine and Science, University of Zürich, Zürich 8057, Switzerland
| | - Matteo Egger
- Laboratory of Neural Connectivity, Brain Research Institute, Faculties of Medicine and Science, University of Zürich, Zürich 8057, Switzerland
- Adaptive Brain Circuits in Development and Learning (AdaBD), University Research Priority Program (URPP), University of Zürich, Zürich 8057, Switzerland
| | - Natalia Cruz-Ochoa
- Laboratory of Neural Connectivity, Brain Research Institute, Faculties of Medicine and Science, University of Zürich, Zürich 8057, Switzerland
- Adaptive Brain Circuits in Development and Learning (AdaBD), University Research Priority Program (URPP), University of Zürich, Zürich 8057, Switzerland
| | - Alice Tse
- Laboratory of Neural Connectivity, Brain Research Institute, Faculties of Medicine and Science, University of Zürich, Zürich 8057, Switzerland
| | - Gyula Maloveczky
- Laboratory of Neural Connectivity, Brain Research Institute, Faculties of Medicine and Science, University of Zürich, Zürich 8057, Switzerland
| | - Bálint Tamás
- Laboratory of Neural Connectivity, Brain Research Institute, Faculties of Medicine and Science, University of Zürich, Zürich 8057, Switzerland
| | - David Lukacsovich
- Laboratory of Neural Connectivity, Brain Research Institute, Faculties of Medicine and Science, University of Zürich, Zürich 8057, Switzerland
| | - Charlotte Seng
- Laboratory of Neural Connectivity, Brain Research Institute, Faculties of Medicine and Science, University of Zürich, Zürich 8057, Switzerland
| | - Irmgard Amrein
- Institute of Anatomy, Faculty of Medicine, University of Zürich, Zürich 8057, Switzerland
| | - Tamás Lukacsovich
- Laboratory of Neural Connectivity, Brain Research Institute, Faculties of Medicine and Science, University of Zürich, Zürich 8057, Switzerland
| | - David Wolfer
- Institute of Anatomy, Faculty of Medicine, University of Zürich, Zürich 8057, Switzerland
- Institute of Human Movement Sciences and Sport, D-HEST, ETH Zürich, Zürich 8057, Switzerland
| | - Csaba Földy
- Laboratory of Neural Connectivity, Brain Research Institute, Faculties of Medicine and Science, University of Zürich, Zürich 8057, Switzerland
- Adaptive Brain Circuits in Development and Learning (AdaBD), University Research Priority Program (URPP), University of Zürich, Zürich 8057, Switzerland
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Naffa R, Hegedűs L, Hegedűs T, Tóth S, Papp B, Tordai A, Enyedi Á. Plasma membrane Ca 2+ pump isoform 4 function in cell migration and cancer metastasis. J Physiol 2024; 602:1551-1564. [PMID: 36876504 DOI: 10.1113/jp284179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 03/02/2023] [Indexed: 03/07/2023] Open
Abstract
The Ca2+ ion is a universal second messenger involved in many vital physiological functions including cell migration and development. To fulfil these tasks the cytosolic Ca2+ concentration is tightly controlled, and this involves an intricate functional balance between a variety of channels and pumps of the Ca2+ signalling machinery. Among these proteins, plasma membrane Ca2+ ATPases (PMCAs) represent the major high-affinity Ca2+ extrusion systems in the cell membrane that are effective in maintaining free Ca2+ concentration at exceedingly low cytosolic levels, which is essential for normal cell function. An imbalance in Ca2+ signalling can have pathogenic consequences including cancer and metastasis. Recent studies have highlighted the role of PMCAs in cancer progression and have shown that a particular variant, PMCA4b, is downregulated in certain cancer types, causing delayed attenuation of the Ca2+ signal. It has also been shown that loss of PMCA4b leads to increased migration and metastasis of melanoma and gastric cancer cells. In contrast, an increased PMCA4 expression has been reported in pancreatic ductal adenocarcinoma that coincided with increased cell migration and shorter patient survival, suggesting distinct roles of PMCA4b in various tumour types and/or different stages of tumour development. The recently discovered interaction of PMCAs with basigin, an extracellular matrix metalloproteinase inducer, may provide further insights into our understanding of the specific roles of PMCA4b in tumour progression and cancer metastasis.
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Affiliation(s)
- Randa Naffa
- Molecular Biology Research Laboratory, School of Medicine, The University of Jordan, Amman, Jordan
| | - Luca Hegedűs
- Department of Thoracic Surgery, Ruhrlandklinik, University Clinic Essen, Essen, Germany
| | - Tamás Hegedűs
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
- ELKH-SE Biophysical Virology Research Group, Eötvös Loránd Research Network, Budapest, Hungary
| | - Sarolta Tóth
- Department of Transfusion Medicine, Semmelweis University, Budapest, Hungary
| | - Béla Papp
- Institut National de la Santé et de la Recherche Médicale, Institut de Recherche Saint-Louis, Hôpital Saint-Louis, Paris, France
- Institut de Recherche Saint-Louis, Hôpital Saint-Louis, Université de Paris, Paris, France
- CEA, DRF-Institut Francois Jacob, Department of Hemato-Immunology Research, Hôpital Saint-Louis, Paris, France
| | - Attila Tordai
- Department of Transfusion Medicine, Semmelweis University, Budapest, Hungary
| | - Ágnes Enyedi
- ELKH-SE Biophysical Virology Research Group, Eötvös Loránd Research Network, Budapest, Hungary
- Department of Transfusion Medicine, Semmelweis University, Budapest, Hungary
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Talvi S, Jokinen J, Sipilä K, Rappu P, Zhang FP, Poutanen M, Rantakari P, Heino J. Embigin deficiency leads to delayed embryonic lung development and high neonatal mortality in mice. iScience 2024; 27:108914. [PMID: 38318368 PMCID: PMC10839689 DOI: 10.1016/j.isci.2024.108914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 10/20/2023] [Accepted: 01/11/2024] [Indexed: 02/07/2024] Open
Abstract
Embigin (Gp70), a receptor for fibronectin and an ancillary protein for monocarboxylate transporters, is known to regulate stem cell niches in sebaceous gland and bone marrow. Here, we show that embigin expression is at high level during early mouse embryogenesis and that embigin is essential for lung development. Markedly increased neonatal mortality of Emb-/- mice can be explained by the compromised lung maturation: in Emb-/- mice (E17.5) the number and the size of the small airways and distal airspace are significantly smaller, there are fewer ATI and ATII cells, and the alkaline phosphatase activity in amniotic fluid is lower. Emb-/- lungs show less peripheral branching already at E12.5, and embigin is highly expressed in lung primordium. Thus, embigin function is essential at early pseudoglandular stage or even earlier. Furthermore, our RNA-seq analysis and Ki67 staining results support the idea that the development of Emb-/- lungs is rather delayed than defected.
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Affiliation(s)
- Salli Talvi
- Department of Life Technologies, University of Turku, 20014 Turku, Finland
- Medicity Research Laboratory, University of Turku, 20014 Turku, Finland
- InFLAMES Research Flagship, University of Turku, 20014 Turku, Finland
| | - Johanna Jokinen
- Department of Life Technologies, University of Turku, 20014 Turku, Finland
- Medicity Research Laboratory, University of Turku, 20014 Turku, Finland
- InFLAMES Research Flagship, University of Turku, 20014 Turku, Finland
| | - Kalle Sipilä
- Department of Life Technologies, University of Turku, 20014 Turku, Finland
- Centre for Stem Cells and Regenerative Medicine, King’s College London, London WC2R2LS, UK
| | - Pekka Rappu
- Department of Life Technologies, University of Turku, 20014 Turku, Finland
- InFLAMES Research Flagship, University of Turku, 20014 Turku, Finland
| | - Fu-Ping Zhang
- Institute of Biomedicine, Research Centre for Integrative Physiology and Pharmacology, University of Turku, 20014 Turku, Finland
- Turku Center for Disease Modeling, University of Turku, 20014 Turku, Finland
- Helsinki Institute of Life Science, University of Helsinki, 00014 Helsinki, Finland
| | - Matti Poutanen
- InFLAMES Research Flagship, University of Turku, 20014 Turku, Finland
- Institute of Biomedicine, Research Centre for Integrative Physiology and Pharmacology, University of Turku, 20014 Turku, Finland
- Turku Center for Disease Modeling, University of Turku, 20014 Turku, Finland
| | - Pia Rantakari
- InFLAMES Research Flagship, University of Turku, 20014 Turku, Finland
- Institute of Biomedicine, University of Turku, 20014 Turku, Finland
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, 20014 Turku, Finland
| | - Jyrki Heino
- Department of Life Technologies, University of Turku, 20014 Turku, Finland
- Medicity Research Laboratory, University of Turku, 20014 Turku, Finland
- InFLAMES Research Flagship, University of Turku, 20014 Turku, Finland
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Chen J, Lin X, Bhattacharya S, Wiesehöfer C, Wennemuth G, Müller K, Montag D. Neuroplastin Expression in Male Mice Is Essential for Fertility, Mating, and Adult Testosterone Levels. Int J Mol Sci 2023; 25:177. [PMID: 38203350 PMCID: PMC10779036 DOI: 10.3390/ijms25010177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 12/14/2023] [Accepted: 12/19/2023] [Indexed: 01/12/2024] Open
Abstract
Male reproduction depends on hormonally driven behaviors and numerous genes for testis development and spermatogenesis. Neuroplastin-deficient (Nptn-/-) male mice cannot sire offspring. By immunohistochemistry, we characterized neuroplastin expression in the testis. Breeding, mating behavior, hormonal regulation, testicular development, and spermatogenesis were analyzed in cell-type specific neuroplastin mutant mice. Leydig, Sertoli, peritubular myoid, and germ cells express Np, but spermatogenesis and sperm number are not affected in Nptn-/- males. Neuroplastin lack from CNS neurons or restricted to spermatogonia or Sertoli cells permitted reproduction. Normal luteinizing hormone (LH) and follicle-stimulating hormone (FSH) blood levels in Nptn-/- males support undisturbed hormonal regulation in the brain. However, Nptn-/- males lack mounting behavior accompanied by low testosterone blood levels. Testosterone rise from juvenile to adult blood levels is absent in Nptn-/- males. LH-receptor stimulation raising intracellular Ca2+ in Leydig cells triggers testosterone production. Reduced Plasma Membrane Ca2+ ATPase 1 (PMCA1) in Nptn-/- Leydig cells suggests that Nptn-/- Leydig cells produce sufficient testosterone for testis and sperm development, but a lack of PMCA-Np complexes prevents the increase from reaching adult blood levels. Behavioral immaturity with low testosterone blood levels underlies infertility of Nptn-/- males, revealing that Np is essential for reproduction.
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Affiliation(s)
- Juanjuan Chen
- Neurogenetics, Leibniz Institute for Neurobiology, Brenneckestr. 6, D-39118 Magdeburg, Germany; (J.C.); (X.L.); (S.B.)
| | - Xiao Lin
- Neurogenetics, Leibniz Institute for Neurobiology, Brenneckestr. 6, D-39118 Magdeburg, Germany; (J.C.); (X.L.); (S.B.)
| | - Soumee Bhattacharya
- Neurogenetics, Leibniz Institute for Neurobiology, Brenneckestr. 6, D-39118 Magdeburg, Germany; (J.C.); (X.L.); (S.B.)
| | - Caroline Wiesehöfer
- Department of Anatomy, University Hospital, University Duisburg-Essen, Hufelandstr. 55, D-45147 Essen, Germany; (C.W.); (G.W.)
| | - Gunther Wennemuth
- Department of Anatomy, University Hospital, University Duisburg-Essen, Hufelandstr. 55, D-45147 Essen, Germany; (C.W.); (G.W.)
| | - Karin Müller
- Leibniz Institute for Zoo and Wildlife Research IZW, Alfred-Kowalke-Str. 17, D-10315 Berlin, Germany;
| | - Dirk Montag
- Neurogenetics, Leibniz Institute for Neurobiology, Brenneckestr. 6, D-39118 Magdeburg, Germany; (J.C.); (X.L.); (S.B.)
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Li YF, Lin YT, Wang YQ, Ni JY, Power DM. Ioxynil and diethylstilbestrol impair cardiac performance and shell growth in the mussel Mytilus coruscus. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 905:166834. [PMID: 37717744 DOI: 10.1016/j.scitotenv.2023.166834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 07/30/2023] [Accepted: 09/02/2023] [Indexed: 09/19/2023]
Abstract
The herbicide ioxynil (IOX) and the synthetic estrogen diethylstilbestrol (DES) are environmentally relevant contaminants that act as endocrine disruptors (EDCs) and have recently been shown to be cardiovascular disruptors in vertebrates. Mussels, Mytilus coruscus, were exposed to low doses of IOX (0.37, 0.037 and 0.0037 mg/L) and DES (0.27, 0.027 and 0.0027 mg/L) via the water and the effect monitored by generating whole animal transcriptomes and measuring cardiac performance and shell growth. One day after IOX (0.37 and 0.037 mg/L) and DES (0.27 and 0.027 mg/L) exposure heart rate frequency was decreased in both groups and 0.27 mg/L DES significantly reduced heart rate frequency with increasing time of exposure (P < 0.05) and no acclimatization occurred. The functional effects were coupled to significant differential expression of genes of the serotonergic synapse pathway and cardiac-related genes at 0.027 mg/L DES, which suggests that impaired heart function may be due to interference with neuroendocrine regulation and direct cardiac effect genes. Multiple genes related to detoxifying xenobiotic substances were up regulated and genes related to immune function were down regulated in the DES group (vs. control), indicating that detoxification processes were enhanced, and the immune response was depressed. In contrast, IOX had a minor disrupting effect at a molecular level. Of note was a significant suppression (P < 0.05) by DES of shell growth in juveniles and lower doses (< 0.0027 mg/L) had a more severe effect. The shell growth depression in 0.0027 mg/L DES-treated juveniles was not accompanied by abundant differential gene expression, suggesting that the effect of 0.0027 mg/L DES on shell growth may be direct. The results obtained in the present study reveal for the first time that IOX and DES may act as neuroendocrine disrupters with a broad spectrum of effects on cardiac performance and shell growth, and that DES exposure had a much more pronounced effect than IOX in a marine bivalve.
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Affiliation(s)
- Yi-Feng Li
- International Research Centre for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, China; Centre of Marine Sciences, University of Algarve, Faro, Portugal.
| | - Yue-Tong Lin
- International Research Centre for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, China
| | - Yu-Qing Wang
- International Research Centre for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, China
| | - Ji-Yue Ni
- International Research Centre for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, China
| | - Deborah M Power
- International Research Centre for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, China; Centre of Marine Sciences, University of Algarve, Faro, Portugal.
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9
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Villar-Conde S, Astillero-Lopez V, Gonzalez-Rodriguez M, Saiz-Sanchez D, Martinez-Marcos A, Ubeda-Banon I, Flores-Cuadrado A. Synaptic Involvement of the Human Amygdala in Parkinson's Disease. Mol Cell Proteomics 2023; 22:100673. [PMID: 37947401 PMCID: PMC10700869 DOI: 10.1016/j.mcpro.2023.100673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 10/18/2023] [Accepted: 10/24/2023] [Indexed: 11/12/2023] Open
Abstract
α-Synuclein, a protein mostly present in presynaptic terminals, accumulates neuropathologically in Parkinson's disease in a 6-stage sequence and propagates in the nervous system in a prion-like manner through neurons and glia. In stage 3, the substantia nigra are affected, provoking motor symptoms and the amygdaloid complex, leading to different nonmotor symptoms; from here, synucleinopathy spreads to the temporal cortex and beyond. The expected increase in Parkinson's disease incidence accelerates the need for detection biomarkers; however, the heterogeneity of this disease, including pathological aggregates and pathophysiological pathways, poses a challenge in the search for new therapeutic targets and biomarkers. Proteomic analyses are lacking, and the literature regarding synucleinopathy, neural and glial involvement, and volume of the human amygdaloid complex is controversial. Therefore, the present study combines both proteomic and stereological probes. Data-independent acquisition-parallel accumulation of serial fragmentation proteomic analysis revealed a remarkable proteomic impact, especially at the synaptic level in the human amygdaloid complex in Parkinson's disease. Among the 199 differentially expressed proteins, guanine nucleotide-binding protein G(i) subunit alpha-1 (GNAI1), elongation factor 1-alpha 1 (EEF1A1), myelin proteolipid protein (PLP1), neuroplastin (NPTN), 14-3-3 protein eta (YWHAH), gene associated with retinoic and interferon-induced mortality 19 protein (GRIM19), and orosomucoid-2 (ORM2) stand out as potential biomarkers in Parkinson's disease. Stereological analysis, however, did not reveal alterations regarding synucleinopathy, neural or glial populations, or volume changes. To our knowledge, this is the first proteomic study of the human amygdaloid complex in Parkinson's disease, and it identified possible biomarkers of the disease. Lewy pathology could not be sufficient to cause neurodegeneration or alteration of microglial and astroglial populations in the human amygdaloid complex in Parkinson's disease. Nevertheless, damage at the proteomic level is manifest, showing up significant synaptic involvement.
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Affiliation(s)
- Sandra Villar-Conde
- Grupo de Neuroplasticidad y Neurodegeneración, CRIB, Facultad de Medicina de Ciudad Real, Universidad de Castilla-La Mancha (UCLM), Spain; Grupo de Neuroplasticidad y Neurodegeneración, Instituto de Investigación Sanitaria de Castilla-La Mancha (IDISCAM), Spain
| | - Veronica Astillero-Lopez
- Grupo de Neuroplasticidad y Neurodegeneración, CRIB, Facultad de Medicina de Ciudad Real, Universidad de Castilla-La Mancha (UCLM), Spain; Grupo de Neuroplasticidad y Neurodegeneración, Instituto de Investigación Sanitaria de Castilla-La Mancha (IDISCAM), Spain
| | - Melania Gonzalez-Rodriguez
- Grupo de Neuroplasticidad y Neurodegeneración, CRIB, Facultad de Medicina de Ciudad Real, Universidad de Castilla-La Mancha (UCLM), Spain; Grupo de Neuroplasticidad y Neurodegeneración, Instituto de Investigación Sanitaria de Castilla-La Mancha (IDISCAM), Spain
| | - Daniel Saiz-Sanchez
- Grupo de Neuroplasticidad y Neurodegeneración, CRIB, Facultad de Medicina de Ciudad Real, Universidad de Castilla-La Mancha (UCLM), Spain; Grupo de Neuroplasticidad y Neurodegeneración, Instituto de Investigación Sanitaria de Castilla-La Mancha (IDISCAM), Spain
| | - Alino Martinez-Marcos
- Grupo de Neuroplasticidad y Neurodegeneración, CRIB, Facultad de Medicina de Ciudad Real, Universidad de Castilla-La Mancha (UCLM), Spain; Grupo de Neuroplasticidad y Neurodegeneración, Instituto de Investigación Sanitaria de Castilla-La Mancha (IDISCAM), Spain.
| | - Isabel Ubeda-Banon
- Grupo de Neuroplasticidad y Neurodegeneración, CRIB, Facultad de Medicina de Ciudad Real, Universidad de Castilla-La Mancha (UCLM), Spain; Grupo de Neuroplasticidad y Neurodegeneración, Instituto de Investigación Sanitaria de Castilla-La Mancha (IDISCAM), Spain.
| | - Alicia Flores-Cuadrado
- Grupo de Neuroplasticidad y Neurodegeneración, CRIB, Facultad de Medicina de Ciudad Real, Universidad de Castilla-La Mancha (UCLM), Spain; Grupo de Neuroplasticidad y Neurodegeneración, Instituto de Investigación Sanitaria de Castilla-La Mancha (IDISCAM), Spain
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10
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Goikolea J, Latorre-Leal M, Tsagkogianni C, Pikkupeura S, Gulyas B, Cedazo-Minguez A, Loera-Valencia R, Björkhem I, Rodriguez Rodriguez P, Maioli S. Different effects of CYP27A1 and CYP7B1 on cognitive function: Two mouse models in comparison. J Steroid Biochem Mol Biol 2023; 234:106387. [PMID: 37648096 DOI: 10.1016/j.jsbmb.2023.106387] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 08/27/2023] [Indexed: 09/01/2023]
Abstract
The oxysterol 27-hydroxycholesterol (27OHC) is produced by the enzyme sterol 27-hydroxylase (Cyp27A1) and is mainly catabolized to 7α-Hydroxy-3-oxo-4-cholestenoic acid (7-HOCA) by the enzyme cytochrome P-450 oxysterol 7α-hydroxylase (Cyp7B1). 27OHC is mostly produced in the liver and can reach the brain by crossing the blood-brain barrier. A large body of evidence shows that CYP27A1 overexpression and high levels of 27OHC have a detrimental effect on the brain, causing cognitive and synaptic dysfunction together with a decrease in glucose uptake in mice. In this work, we analyzed two mouse models with high levels of 27OHC: Cyp7B1 knock-out mice and CYP27A1 overexpressing mice. Despite the accumulation of 27OHC in both models, Cyp7B1 knock-out mice maintained intact learning and memory capacities, neuronal morphology, and brain glucose uptake over time. Neurons treated with the Cyp7B1 metabolite 7-HOCA did not show changes in synaptic genes and 27OHC-treated Cyp7B1 knock-out neurons could not counteract 27OHC detrimental effects. This suggests that 7-HOCA and Cyp7B1 deletion in neurons do not mediate the neuroprotective effects observed in Cyp7B1 knock-out animals. RNA-seq of neuronal nuclei sorted from Cyp7B1 knock-out brains revealed upregulation of genes likely to confer neuroprotection to these animals. Differently from Cyp7B1 knock-out mice, transcriptomic data from CYP27A1 overexpressing neurons showed significant downregulation of genes associated with synaptic function and several metabolic processes. Our results suggest that the differences observed in the two models may be mediated by the higher levels of Cyp7B1 substrates such as 25-hydroxycholesterol and 3β-Adiol in the knock-out mice and that CYP27A1 overexpressing mice may be a more suitable model for studying 27-OHC-specific signaling. We believe that future studies on Cyp7B1 and Cyp27A1 will contribute to a better understanding of the pathogenic mechanisms of neurodegenerative diseases like Alzheimer's disease and may lead to potential new therapeutic approaches.
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Affiliation(s)
- Julen Goikolea
- Karolinska Institutet, Department of Neurobiology Care Sciences and Society, Division of Neurogeriatrics, Center for Alzheimer Research, Stockholm, Sweden
| | - Maria Latorre-Leal
- Karolinska Institutet, Department of Neurobiology Care Sciences and Society, Division of Neurogeriatrics, Center for Alzheimer Research, Stockholm, Sweden
| | - Christina Tsagkogianni
- Karolinska Institutet, Department of Neurobiology Care Sciences and Society, Division of Neurogeriatrics, Center for Alzheimer Research, Stockholm, Sweden
| | - Sonja Pikkupeura
- Karolinska Institutet, Department of Neurobiology Care Sciences and Society, Division of Neurogeriatrics, Center for Alzheimer Research, Stockholm, Sweden
| | - Balazs Gulyas
- Karolinska Institutet, Department of Clinical Neuroscience, Stockholm, Sweden
| | - Angel Cedazo-Minguez
- Karolinska Institutet, Department of Neurobiology Care Sciences and Society, Division of Neurogeriatrics, Center for Alzheimer Research, Stockholm, Sweden
| | - Raul Loera-Valencia
- Karolinska Institutet, Department of Neurobiology Care Sciences and Society, Division of Neurogeriatrics, Center for Alzheimer Research, Stockholm, Sweden; Tecnologico de Monterrey, School of Medicine and Health Sciences, Chihuahua, Mexico
| | - Ingemar Björkhem
- Karolinska Institutet, Department of Laboratory Medicine, Huddinge, Sweden
| | - Patricia Rodriguez Rodriguez
- Karolinska Institutet, Department of Neurobiology Care Sciences and Society, Division of Neurogeriatrics, Center for Alzheimer Research, Stockholm, Sweden
| | - Silvia Maioli
- Karolinska Institutet, Department of Neurobiology Care Sciences and Society, Division of Neurogeriatrics, Center for Alzheimer Research, Stockholm, Sweden.
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11
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Dedigama-Arachchige PM, Acharige NPN, Zhang X, Bremer HJ, Yi Z, Pflum MKH. Identification of PP1c-PPP1R12A Substrates Using Kinase-Catalyzed Biotinylation to Identify Phosphatase Substrates. ACS OMEGA 2023; 8:35628-35637. [PMID: 37810667 PMCID: PMC10552495 DOI: 10.1021/acsomega.3c01944] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 07/21/2023] [Indexed: 10/10/2023]
Abstract
Protein phosphatase 1 regulatory subunit 12A (PPP1R12A) interacts with the catalytic subunit of protein phosphatase 1 (PP1c) to form the myosin phosphatase complex. In addition to a well-documented role in muscle contraction, the PP1c-PPP1R12A complex is associated with cytoskeleton organization, cell migration and adhesion, and insulin signaling. Despite the variety of biological functions, only a few substrates of the PP1c-PPP1R12A complex are characterized, which limit a full understanding of PP1c-PPP1R12A activities in muscle contraction and cytoskeleton regulation. Here, the chemoproteomics method Kinase-catalyzed Biotinylation to Identify Phosphatase Substrates (K-BIPS) was used to identify substrates of the PP1c-PPP1R12A complex in L6 skeletal muscle cells. K-BIPS enriched 136 candidate substrates with 14 high confidence hits. One high confidence hit, AKT1 kinase, was validated as a novel PP1c-PPP1R12A substrate. Given the previously documented role of AKT1 in PPP1R12A phosphorylation and cytoskeleton organization, the data suggest that PP1c-PPP1R12A regulates its own phosphatase activity through an AKT1-dependent feedback mechanism to influence cytoskeletal arrangement in muscle cells.
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Affiliation(s)
| | - Nuwan P N Acharige
- Department of Chemistry, Wayne State University, 5101 Cass Ave, Detroit 48202-3489, Michigan, United States
| | - Xiangmin Zhang
- Department of Pharmaceutical Sciences, Wayne State University, 259 Mack Ave, Detroit 48201, Michigan, United States
| | - Hannah J Bremer
- Department of Chemistry, Wayne State University, 5101 Cass Ave, Detroit 48202-3489, Michigan, United States
| | - Zhengping Yi
- Department of Pharmaceutical Sciences, Wayne State University, 259 Mack Ave, Detroit 48201, Michigan, United States
| | - Mary Kay H Pflum
- Department of Chemistry, Wayne State University, 5101 Cass Ave, Detroit 48202-3489, Michigan, United States
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12
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Patel AO, Caldwell AB, Ramachandran S, Subramaniam S. Endotype Characterization Reveals Mechanistic Differences Across Brain Regions in Sporadic Alzheimer's Disease. J Alzheimers Dis Rep 2023; 7:957-972. [PMID: 37849634 PMCID: PMC10578327 DOI: 10.3233/adr-220098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 07/21/2023] [Indexed: 10/19/2023] Open
Abstract
Background While Alzheimer's disease (AD) pathology is associated with altered brain structure, it is not clear whether gene expression changes mirror the onset and evolution of pathology in distinct brain regions. Deciphering the mechanisms which cause the differential manifestation of the disease across different regions has the potential to help early diagnosis. Objective We aimed to identify common and unique endotypes and their regulation in tangle-free neurons in sporadic AD (SAD) across six brain regions: entorhinal cortex (EC), hippocampus (HC), medial temporal gyrus (MTG), posterior cingulate (PC), superior frontal gyrus (SFG), and visual cortex (VCX). Methods To decipher the states of tangle-free neurons across different brain regions in human subjects afflicted with AD, we performed analysis of the neural transcriptome. We explored changes in differential gene expression, functional and transcription factor target enrichment, and co-expression gene module detection analysis to discern disease-state transcriptomic variances and characterize endotypes. Additionally, we compared our results to tangled AD neuron microarray-based study and the Allen Brain Atlas. Results We identified impaired neuron function in EC, MTG, PC, and VCX resulting from REST activation and reversal of mature neurons to a precursor-like state in EC, MTG, and SFG linked to SOX2 activation. Additionally, decreased neuron function and increased dedifferentiation were linked to the activation of SUZ12. Energetic deficit connected to NRF1 inactivation was found in HC, PC, and VCX. Conclusions Our findings suggest that SAD manifestation varies in scale and severity in different brain regions. We identify endotypes, such as energetic shortfalls, impaired neuronal function, and dedifferentiation.
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Affiliation(s)
- Ashay O. Patel
- Department of Bioengineering, University of California, San Diego, La Jolla, CA, USA
| | - Andrew B. Caldwell
- Department of Bioengineering, University of California, San Diego, La Jolla, CA, USA
| | | | - Shankar Subramaniam
- Department of Bioengineering, University of California, San Diego, La Jolla, CA, USA
- Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA, USA
- Department of Nanoengineering, University of California, San Diego, La Jolla, CA, USA
- Department of Computer Science and Engineering, University of California, San Diego, La Jolla, CA, USA
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13
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Yang YM, Jung Y, Abegg D, Adibekian A, Carroll KS, Karbstein K. Chaperone-directed ribosome repair after oxidative damage. Mol Cell 2023; 83:1527-1537.e5. [PMID: 37086725 PMCID: PMC10164075 DOI: 10.1016/j.molcel.2023.03.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 02/07/2023] [Accepted: 03/30/2023] [Indexed: 04/24/2023]
Abstract
Because of the central role ribosomes play for protein translation and ribosome-mediated mRNA and protein quality control (RQC), the ribosome pool is surveyed and dysfunctional ribosomes degraded both during assembly, as well as the functional cycle. Oxidative stress downregulates translation and damages mRNAs and ribosomal proteins (RPs). Although damaged mRNAs are detected and degraded via RQC, how cells mitigate damage to RPs is not known. Here, we show that cysteines in Rps26 and Rpl10 are readily oxidized, rendering the proteins non-functional. Oxidized Rps26 and Rpl10 are released from ribosomes by their chaperones, Tsr2 and Sqt1, and the damaged ribosomes are subsequently repaired with newly made proteins. Ablation of this pathway impairs growth, which is exacerbated under oxidative stress. These findings reveal an unanticipated mechanism for chaperone-mediated ribosome repair, augment our understanding of ribosome quality control, and explain previous observations of protein exchange in ribosomes from dendrites, with broad implications for aging and health.
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Affiliation(s)
- Yoon-Mo Yang
- Department of Integrative Structural and Computational Biology, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, Jupiter, FL 33458, USA
| | - Youngeun Jung
- Department of Chemistry, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, Jupiter, FL 33458, USA
| | - Daniel Abegg
- Department of Chemistry, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, Jupiter, FL 33458, USA
| | - Alexander Adibekian
- Department of Chemistry, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, Jupiter, FL 33458, USA
| | - Kate S Carroll
- Department of Chemistry, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, Jupiter, FL 33458, USA
| | - Katrin Karbstein
- Department of Integrative Structural and Computational Biology, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, Jupiter, FL 33458, USA; HHMI Faculty Scholar, Chevy Chase, MD 20815, USA.
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14
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Epigenetic and transcriptional activation of the secretory kinase FAM20C as an oncogene in glioma. J Genet Genomics 2023:S1673-8527(23)00023-1. [PMID: 36708808 DOI: 10.1016/j.jgg.2023.01.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 01/03/2023] [Accepted: 01/14/2023] [Indexed: 01/26/2023]
Abstract
Gliomas are the most prevalent and aggressive malignancies of the nervous system. Previous bioinformatic studies have revealed the crucial role of the secretory pathway kinase FAM20C in the prediction of glioma invasion and malignancy. However, little is known about the pathogenesis of FAM20C in the regulation of glioma. Here, we construct the full-length transcriptome atlas in paired gliomas and observe that 22 genes are upregulated by full-length transcriptome and differential APA analysis. Analysis of ATAC-seq data reveals that both FAM20C and NPTN are the hub genes with chromatin openness and differential expression. Further, in vitro and in vivo studies suggest that FAM20C stimulates the proliferation and metastasis of glioma cells. Meanwhile, NPTN, a novel cancer suppressor gene, counteracts the function of FAM20C by inhibiting both the proliferation and migration of glioma. The blockade of FAM20C by neutralizing antibodies results in the regression of xenograft tumors. Moreover, MAX, BRD4, MYC, and REST are found to be the potential trans-active factors for the regulation of FAM20C. Taken together, our results uncover the oncogenic role of FAM20C in glioma and shed new light on the treatment of glioma by abolishing FAM20C.
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15
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Kershberg L, Banerjee A, Kaeser PS. Protein composition of axonal dopamine release sites in the striatum. eLife 2022; 11:e83018. [PMID: 36579890 PMCID: PMC9937654 DOI: 10.7554/elife.83018] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 12/22/2022] [Indexed: 12/30/2022] Open
Abstract
Dopamine is an important modulator of cognition and movement. We recently found that evoked dopamine secretion is fast and relies on active zone-like release sites. Here, we used in vivo biotin identification (iBioID) proximity proteomics in mouse striatum to assess which proteins are present at these sites. Using three release site baits, we identified proteins that are enriched over the general dopamine axonal protein content, and they fell into several categories, including active zone, Ca2+ regulatory, and synaptic vesicle proteins. We also detected many proteins not previously associated with vesicular exocytosis. Knockout of the presynaptic organizer protein RIM strongly decreased the hit number obtained with iBioID, while Synaptotagmin-1 knockout did not. α-Synuclein, a protein linked to Parkinson's disease, was enriched at release sites, and its enrichment was lost in both tested mutants. We conclude that RIM organizes scaffolded dopamine release sites and provide a proteomic assessment of the composition of these sites.
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Affiliation(s)
- Lauren Kershberg
- Department of Neurobiology, Harvard Medical SchoolBostonUnited States
| | - Aditi Banerjee
- Department of Neurobiology, Harvard Medical SchoolBostonUnited States
| | - Pascal S Kaeser
- Department of Neurobiology, Harvard Medical SchoolBostonUnited States
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16
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Embigin is a fibronectin receptor that affects sebaceous gland differentiation and metabolism. Dev Cell 2022; 57:1453-1465.e7. [DOI: 10.1016/j.devcel.2022.05.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 03/19/2022] [Accepted: 05/16/2022] [Indexed: 12/25/2022]
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17
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Chapman CA, Nuwer JL, Jacob TC. The Yin and Yang of GABAergic and Glutamatergic Synaptic Plasticity: Opposites in Balance by Crosstalking Mechanisms. Front Synaptic Neurosci 2022; 14:911020. [PMID: 35663370 PMCID: PMC9160301 DOI: 10.3389/fnsyn.2022.911020] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 04/26/2022] [Indexed: 01/12/2023] Open
Abstract
Synaptic plasticity is a critical process that regulates neuronal activity by allowing neurons to adjust their synaptic strength in response to changes in activity. Despite the high proximity of excitatory glutamatergic and inhibitory GABAergic postsynaptic zones and their functional integration within dendritic regions, concurrent plasticity has historically been underassessed. Growing evidence for pathological disruptions in the excitation and inhibition (E/I) balance in neurological and neurodevelopmental disorders indicates the need for an improved, more "holistic" understanding of synaptic interplay. There continues to be a long-standing focus on the persistent strengthening of excitation (excitatory long-term potentiation; eLTP) and its role in learning and memory, although the importance of inhibitory long-term potentiation (iLTP) and depression (iLTD) has become increasingly apparent. Emerging evidence further points to a dynamic dialogue between excitatory and inhibitory synapses, but much remains to be understood regarding the mechanisms and extent of this exchange. In this mini-review, we explore the role calcium signaling and synaptic crosstalk play in regulating postsynaptic plasticity and neuronal excitability. We examine current knowledge on GABAergic and glutamatergic synapse responses to perturbances in activity, with a focus on postsynaptic plasticity induced by short-term pharmacological treatments which act to either enhance or reduce neuronal excitability via ionotropic receptor regulation in neuronal culture. To delve deeper into potential mechanisms of synaptic crosstalk, we discuss the influence of synaptic activity on key regulatory proteins, including kinases, phosphatases, and synaptic structural/scaffolding proteins. Finally, we briefly suggest avenues for future research to better understand the crosstalk between glutamatergic and GABAergic synapses.
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Affiliation(s)
| | | | - Tija C. Jacob
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
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18
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Scaroni F, Visconte C, Serpente M, Golia MT, Gabrielli M, Huiskamp M, Hulst HE, Carandini T, De Riz M, Pietroboni A, Rotondo E, Scarpini E, Galimberti D, Teunissen CE, van Dam M, de Jong BA, Fenoglio C, Verderio C. miR-150-5p and let-7b-5p in Blood Myeloid Extracellular Vesicles Track Cognitive Symptoms in Patients with Multiple Sclerosis. Cells 2022; 11:cells11091551. [PMID: 35563859 PMCID: PMC9104242 DOI: 10.3390/cells11091551] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 04/30/2022] [Accepted: 05/02/2022] [Indexed: 02/04/2023] Open
Abstract
Cognitive deficits strongly affect the quality of life of patients with multiple sclerosis (MS). However, no cognitive MS biomarkers are currently available. Extracellular vesicles (EVs) contain markers of parental cells and are able to pass from the brain into blood, representing a source of disease biomarkers. The aim of this study was to investigate whether small non-coding microRNAs (miRNAs) targeting synaptic genes and packaged in plasma EVs may reflect cognitive deficits in MS patients. Total EVs were precipitated by Exoquick from the plasma of twenty-six cognitively preserved (CP) and twenty-three cognitively impaired (CI) MS patients belonging to two independent cohorts. Myeloid EVs were extracted by affinity capture from total EVs using Isolectin B4 (IB4). Fourteen miRNAs targeting synaptic genes were selected and measured by RT-PCR in both total and myeloid EVs. Myeloid EVs from CI patients expressed higher levels of miR-150-5p and lower levels of let-7b-5p compared to CP patients. Stratification for progressive MS (PMS) and relapsing-remitting MS (RRMS) and correlation with clinical parameters suggested that these alterations might be attributable to cognitive deficits rather than disease progression. This study identifies miR-150-5p and let-7b-5p packaged in blood myeloid EVs as possible biomarkers for cognitive deficits in MS.
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Affiliation(s)
- Federica Scaroni
- Institute of Neuroscience, CNR, Via Follereau 3, 20854 Vedano al Lambro, Italy; (F.S.); (M.T.G.); (M.G.)
| | - Caterina Visconte
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Via F. Sforza 35, 20122 Milan, Italy; (C.V.); (E.S.); (D.G.)
- Centro Dino Ferrari, University of Milan, 20122 Milan, Italy; (M.S.); (T.C.); (M.D.R.); (A.P.); (E.R.)
| | - Maria Serpente
- Centro Dino Ferrari, University of Milan, 20122 Milan, Italy; (M.S.); (T.C.); (M.D.R.); (A.P.); (E.R.)
- Fondazione IRCCS Ca’ Granda, Ospedale Policlinico, 20122 Milan, Italy
| | - Maria Teresa Golia
- Institute of Neuroscience, CNR, Via Follereau 3, 20854 Vedano al Lambro, Italy; (F.S.); (M.T.G.); (M.G.)
| | - Martina Gabrielli
- Institute of Neuroscience, CNR, Via Follereau 3, 20854 Vedano al Lambro, Italy; (F.S.); (M.T.G.); (M.G.)
| | - Marijn Huiskamp
- MS Center Amsterdam, Amsterdam Neuroscience, Department of Anatomy and Neurosciences, Amsterdam UMC, Vrije Universiteit Amsterdam UMC, De Boelelaan 1117, 1081 Amsterdam, The Netherlands; (M.H.); (M.v.D.)
| | - Hanneke E. Hulst
- Health-, Medical- and Neuropsychology Unit, Institute of Psychology, Leiden University, 2300 Leiden, The Netherlands;
| | - Tiziana Carandini
- Centro Dino Ferrari, University of Milan, 20122 Milan, Italy; (M.S.); (T.C.); (M.D.R.); (A.P.); (E.R.)
- Fondazione IRCCS Ca’ Granda, Ospedale Policlinico, 20122 Milan, Italy
| | - Milena De Riz
- Centro Dino Ferrari, University of Milan, 20122 Milan, Italy; (M.S.); (T.C.); (M.D.R.); (A.P.); (E.R.)
- Fondazione IRCCS Ca’ Granda, Ospedale Policlinico, 20122 Milan, Italy
| | - Anna Pietroboni
- Centro Dino Ferrari, University of Milan, 20122 Milan, Italy; (M.S.); (T.C.); (M.D.R.); (A.P.); (E.R.)
- Fondazione IRCCS Ca’ Granda, Ospedale Policlinico, 20122 Milan, Italy
| | - Emanuela Rotondo
- Centro Dino Ferrari, University of Milan, 20122 Milan, Italy; (M.S.); (T.C.); (M.D.R.); (A.P.); (E.R.)
- Fondazione IRCCS Ca’ Granda, Ospedale Policlinico, 20122 Milan, Italy
| | - Elio Scarpini
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Via F. Sforza 35, 20122 Milan, Italy; (C.V.); (E.S.); (D.G.)
- Centro Dino Ferrari, University of Milan, 20122 Milan, Italy; (M.S.); (T.C.); (M.D.R.); (A.P.); (E.R.)
- Fondazione IRCCS Ca’ Granda, Ospedale Policlinico, 20122 Milan, Italy
| | - Daniela Galimberti
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Via F. Sforza 35, 20122 Milan, Italy; (C.V.); (E.S.); (D.G.)
- Centro Dino Ferrari, University of Milan, 20122 Milan, Italy; (M.S.); (T.C.); (M.D.R.); (A.P.); (E.R.)
- Fondazione IRCCS Ca’ Granda, Ospedale Policlinico, 20122 Milan, Italy
| | - Charlotte E. Teunissen
- MS Center Amsterdam, Amsterdam Neuroscience, Department of Neurology, Amsterdam UMC, Vrije Universiteit Amsterdam, De Boelelaan 1117, 1081 Amsterdam, The Netherlands; (C.E.T.); (B.A.d.J.)
| | - Maureen van Dam
- MS Center Amsterdam, Amsterdam Neuroscience, Department of Anatomy and Neurosciences, Amsterdam UMC, Vrije Universiteit Amsterdam UMC, De Boelelaan 1117, 1081 Amsterdam, The Netherlands; (M.H.); (M.v.D.)
| | - Brigit A. de Jong
- MS Center Amsterdam, Amsterdam Neuroscience, Department of Neurology, Amsterdam UMC, Vrije Universiteit Amsterdam, De Boelelaan 1117, 1081 Amsterdam, The Netherlands; (C.E.T.); (B.A.d.J.)
| | - Chiara Fenoglio
- MS Center Amsterdam, Amsterdam Neuroscience, Department of Neurology, Amsterdam UMC, Vrije Universiteit Amsterdam, De Boelelaan 1117, 1081 Amsterdam, The Netherlands; (C.E.T.); (B.A.d.J.)
- Department of Neuropathology and Transplantation, University of Milan, Via F. Sforza 35, 20122 Milan, Italy
- Correspondence: (C.F.); (C.V.); Tel.: +39-0264488386 (C.V.)
| | - Claudia Verderio
- Institute of Neuroscience, CNR, Via Follereau 3, 20854 Vedano al Lambro, Italy; (F.S.); (M.T.G.); (M.G.)
- Correspondence: (C.F.); (C.V.); Tel.: +39-0264488386 (C.V.)
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19
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Abdel-Hamid M, Yang P, Mostafa I, Osman A, Romeih E, Yang Y, Huang Z, Awad AA, Li L. Changes in Whey Proteome between Mediterranean and Murrah Buffalo Colostrum and Mature Milk Reflect Their Pharmaceutical and Medicinal Value. Molecules 2022; 27:molecules27051575. [PMID: 35268677 PMCID: PMC8912021 DOI: 10.3390/molecules27051575] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 02/23/2022] [Accepted: 02/24/2022] [Indexed: 01/27/2023] Open
Abstract
Milk represents an integrated meal for newborns; its whey protein is rich in many health beneficial components and proteins. The current study aimed to investigate the differences between colostrum and mature milk from Mediterranean and Murrah buffaloes using labeled proteomics and bioinformatics tools. In the current work, LC-MS/MS analysis led to identification of 780 proteins from which 638 were shared among three independent TMT experiments. The significantly changed proteins between the studied types were analyzed using gene ontology enrichment and KEGG pathways, and their interactions were generated using STRING database. Results indicated that immunological, muscular development and function, blood coagulation, heme related, neuronal, translation, metabolic process, and binding proteins were the main terms. Overall, colostrum showed higher levels of immunoglobulins, myosins, actin, neurofascin, syntaxins, thyroglobulins, and RNA-binding proteins, reflecting its importance in the development and activity of immunological, muscular, cardiac, neuronal, and thyroid systems, while lactoferrin and ferritin were increased in mature milk, highlighting its role in iron storage and hemoglobin formation.
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Affiliation(s)
- Mahmoud Abdel-Hamid
- Guangxi Buffalo Research Institute, Chinese Academy of Agricultural Sciences, Nanning 530001, China; (M.A.-H.); (P.Y.); (Z.H.)
- Dairy Science Department, Faculty of Agriculture, Cairo University, Giza 12613, Egypt; (E.R.); (A.A.A.)
| | - Pan Yang
- Guangxi Buffalo Research Institute, Chinese Academy of Agricultural Sciences, Nanning 530001, China; (M.A.-H.); (P.Y.); (Z.H.)
| | - Islam Mostafa
- Department of Pharmacognosy, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt;
| | - Ali Osman
- Biochemistry Department, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt;
| | - Ehab Romeih
- Dairy Science Department, Faculty of Agriculture, Cairo University, Giza 12613, Egypt; (E.R.); (A.A.A.)
| | - Yongxin Yang
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China;
| | - Zizhen Huang
- Guangxi Buffalo Research Institute, Chinese Academy of Agricultural Sciences, Nanning 530001, China; (M.A.-H.); (P.Y.); (Z.H.)
| | - Awad A. Awad
- Dairy Science Department, Faculty of Agriculture, Cairo University, Giza 12613, Egypt; (E.R.); (A.A.A.)
| | - Ling Li
- Guangxi Buffalo Research Institute, Chinese Academy of Agricultural Sciences, Nanning 530001, China; (M.A.-H.); (P.Y.); (Z.H.)
- Correspondence:
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20
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Staunton CA, Owen ED, Hemmings K, Vasilaki A, McArdle A, Barrett-Jolley R, Jackson MJ. Skeletal muscle transcriptomics identifies common pathways in nerve crush injury and ageing. Skelet Muscle 2022; 12:3. [PMID: 35093178 PMCID: PMC8800362 DOI: 10.1186/s13395-021-00283-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 11/24/2021] [Indexed: 12/16/2022] Open
Abstract
Motor unit remodelling involving repeated denervation and re-innervation occurs throughout life. The efficiency of this process declines with age contributing to neuromuscular deficits. This study investigated differentially expressed genes (DEG) in muscle following peroneal nerve crush to model motor unit remodelling in C57BL/6 J mice. Muscle RNA was isolated at 3 days post-crush, RNA libraries were generated using poly-A selection, sequenced and analysed using gene ontology and pathway tools. Three hundred thirty-four DEG were found in quiescent muscle from (26mnth) old compared with (4-6mnth) adult mice and these same DEG were present in muscle from adult mice following nerve crush. Peroneal crush induced 7133 DEG in muscles of adult and 699 DEG in muscles from old mice, although only one DEG (ZCCHC17) was found when directly comparing nerve-crushed muscles from old and adult mice. This analysis revealed key differences in muscle responses which may underlie the diminished ability of old mice to repair following nerve injury.
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Affiliation(s)
- C A Staunton
- MRC- Versus Arthritis Research Centre for Integrated research into Musculoskeletal Ageing (CIMA), Department of Musculoskeletal and Ageing Science, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, L7 8TX, UK
| | - E D Owen
- MRC- Versus Arthritis Research Centre for Integrated research into Musculoskeletal Ageing (CIMA), Department of Musculoskeletal and Ageing Science, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, L7 8TX, UK
| | - K Hemmings
- MRC- Versus Arthritis Research Centre for Integrated research into Musculoskeletal Ageing (CIMA), Department of Musculoskeletal and Ageing Science, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, L7 8TX, UK
| | - A Vasilaki
- MRC- Versus Arthritis Research Centre for Integrated research into Musculoskeletal Ageing (CIMA), Department of Musculoskeletal and Ageing Science, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, L7 8TX, UK
| | - A McArdle
- MRC- Versus Arthritis Research Centre for Integrated research into Musculoskeletal Ageing (CIMA), Department of Musculoskeletal and Ageing Science, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, L7 8TX, UK
| | - R Barrett-Jolley
- MRC- Versus Arthritis Research Centre for Integrated research into Musculoskeletal Ageing (CIMA), Department of Musculoskeletal and Ageing Science, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, L7 8TX, UK
| | - M J Jackson
- MRC- Versus Arthritis Research Centre for Integrated research into Musculoskeletal Ageing (CIMA), Department of Musculoskeletal and Ageing Science, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, L7 8TX, UK.
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21
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Montag D. Retrograde Amnesia - A Question of Disturbed Calcium Levels? Front Cell Neurosci 2022; 15:746198. [PMID: 34975406 PMCID: PMC8718400 DOI: 10.3389/fncel.2021.746198] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 12/02/2021] [Indexed: 11/13/2022] Open
Abstract
Retrograde amnesia is the inability to remember events or information. The successful acquisition and memory of information is required before retrograde amnesia may occur. Often, the trigger for retrograde amnesia is a traumatic event. Loss of memories may be caused in two ways: either by loss/erasure of the memory itself or by the inability to access the memory, which is still present. In general, memories and learning are associated with a positive connotation although the extinction of unpleasant experiences and memories of traumatic events may be highly welcome. In contrast to the many experimental models addressing learning deficits caused by anterograde amnesia, the incapability to acquire new information, retrograde amnesia could so far only be investigated sporadically in human patients and in a limited number of model systems. Apart from models and diseases in which neurodegeneration or dementia like Alzheimer’s disease result in loss of memory, retrograde amnesia can be elicited by various drugs of which alcohol is the most prominent one and exemplifies the non-specific effects and the variable duration. External or internal impacts like traumatic brain injury, stroke, or electroconvulsive treatments may similarly result in variable degrees of retrograde amnesia. In this review, I will discuss a new genetic approach to induce retrograde amnesia in a mouse model and raise the hypothesis that retrograde amnesia is caused by altered intracellular calcium homeostasis. Recently, we observed that neuronal loss of neuroplastin resulted in retrograde amnesia specifically for associative memories. Neuroplastin is tightly linked to the expression of the main Ca2+ extruding pumps, the plasma membrane calcium ATPases (PMCAs). Therefore, neuronal loss of neuroplastin may block the retrieval and storage of associative memories by interference with Ca2+ signaling cascades. The possibility to elicit retrograde amnesia in a controlled manner allows to investigate the underlying mechanisms and may provide a deeper understanding of the molecular and circuit processes of memory.
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Affiliation(s)
- Dirk Montag
- Neurogenetics Laboratory, Leibniz Institute for Neurobiology, Magdeburg, Germany
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22
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Newton S, Kong F, Carlton AJ, Aguilar C, Parker A, Codner GF, Teboul L, Wells S, Brown SDM, Marcotti W, Bowl MR. Neuroplastin genetically interacts with Cadherin 23 and the encoded isoform Np55 is sufficient for cochlear hair cell function and hearing. PLoS Genet 2022; 18:e1009937. [PMID: 35100259 PMCID: PMC8830789 DOI: 10.1371/journal.pgen.1009937] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 02/10/2022] [Accepted: 01/13/2022] [Indexed: 11/25/2022] Open
Abstract
Mammalian hearing involves the mechanoelectrical transduction (MET) of sound-induced fluid waves in the cochlea. Essential to this process are the specialised sensory cochlear cells, the inner (IHCs) and outer hair cells (OHCs). While genetic hearing loss is highly heterogeneous, understanding the requirement of each gene will lead to a better understanding of the molecular basis of hearing and also to therapeutic opportunities for deafness. The Neuroplastin (Nptn) gene, which encodes two protein isoforms Np55 and Np65, is required for hearing, and homozygous loss-of-function mutations that affect both isoforms lead to profound deafness in mice. Here we have utilised several distinct mouse models to elaborate upon the spatial, temporal, and functional requirement of Nptn for hearing. While we demonstrate that both Np55 and Np65 are present in cochlear cells, characterisation of a Np65-specific mouse knockout shows normal hearing thresholds indicating that Np65 is functionally redundant for hearing. In contrast, we find that Nptn-knockout mice have significantly reduced maximal MET currents and MET channel open probabilities in mature OHCs, with both OHCs and IHCs also failing to develop fully mature basolateral currents. Furthermore, comparing the hearing thresholds and IHC synapse structure of Nptn-knockout mice with those of mice that lack Nptn only in IHCs and OHCs shows that the majority of the auditory deficit is explained by hair cell dysfunction, with abnormal afferent synapses contributing only a small proportion of the hearing loss. Finally, we show that continued expression of Neuroplastin in OHCs of adult mice is required for membrane localisation of Plasma Membrane Ca2+ ATPase 2 (PMCA2), which is essential for hearing function. Moreover, Nptn haploinsufficiency phenocopies Atp2b2 (encodes PMCA2) mutations, with heterozygous Nptn-knockout mice exhibiting hearing loss through genetic interaction with the Cdh23ahl allele. Together, our findings provide further insight to the functional requirement of Neuroplastin for mammalian hearing.
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Affiliation(s)
- Sherylanne Newton
- Mammalian Genetics Unit, MRC Harwell Institute, Harwell Oxford, United Kingdom
| | - Fanbo Kong
- School of Sciences, University of Sheffield, Sheffield, United Kingdom
| | - Adam J. Carlton
- School of Sciences, University of Sheffield, Sheffield, United Kingdom
| | - Carlos Aguilar
- Mammalian Genetics Unit, MRC Harwell Institute, Harwell Oxford, United Kingdom
| | - Andrew Parker
- Mammalian Genetics Unit, MRC Harwell Institute, Harwell Oxford, United Kingdom
| | - Gemma F. Codner
- Mary Lyon Centre, MRC Harwell Institute, Harwell Oxford, United Kingdom
| | - Lydia Teboul
- Mary Lyon Centre, MRC Harwell Institute, Harwell Oxford, United Kingdom
| | - Sara Wells
- Mary Lyon Centre, MRC Harwell Institute, Harwell Oxford, United Kingdom
| | - Steve D. M. Brown
- Mammalian Genetics Unit, MRC Harwell Institute, Harwell Oxford, United Kingdom
| | - Walter Marcotti
- School of Sciences, University of Sheffield, Sheffield, United Kingdom
- Sheffield Neuroscience Institute, University of Sheffield, Sheffield, United Kingdom
| | - Michael R. Bowl
- Mammalian Genetics Unit, MRC Harwell Institute, Harwell Oxford, United Kingdom
- UCL Ear Institute, University College London, London, United Kingdom
- * E-mail:
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23
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Lin X, Liang Y, Herrera-Molina R, Montag D. Neuroplastin in Neuropsychiatric Diseases. Genes (Basel) 2021; 12:1507. [PMID: 34680901 PMCID: PMC8535836 DOI: 10.3390/genes12101507] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 09/20/2021] [Accepted: 09/21/2021] [Indexed: 02/07/2023] Open
Abstract
Molecular mechanisms underlying neuropsychiatric and neurodegenerative diseases are insufficiently elucidated. A detailed understanding of these mechanisms may help to further improve medical intervention. Recently, intellectual abilities, creativity, and amnesia have been associated with neuroplastin, a cell recognition glycoprotein of the immunoglobulin superfamily that participates in synapse formation and function and calcium signaling. Data from animal models suggest a role for neuroplastin in pathways affected in neuropsychiatric and neurodegenerative diseases. Neuroplastin loss or disruption of molecular pathways related to neuronal processes has been linked to various neurological diseases, including dementia, schizophrenia, and Alzheimer's disease. Here, we review the molecular features of the cell recognition molecule neuroplastin, and its binding partners, which are related to neurological processes and involved in learning and memory. The emerging functions of neuroplastin may have implications for the treatment of diseases, particularly those of the nervous system.
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Affiliation(s)
- Xiao Lin
- Neurogenetics Laboratory, Leibniz Institute for Neurobiology, Brenneckestr. 6, D-39118 Magdeburg, Germany; (X.L.); (Y.L.)
| | - Yi Liang
- Neurogenetics Laboratory, Leibniz Institute for Neurobiology, Brenneckestr. 6, D-39118 Magdeburg, Germany; (X.L.); (Y.L.)
| | - Rodrigo Herrera-Molina
- Combinatorial NeuroImaging (CNI), Leibniz Institute for Neurobiology, Brenneckestr. 6, D-39118 Magdeburg, Germany;
- Centro Integrativo de Biología y Química Aplicada, Universidad Bernardo O’Higgins, Santiago 8307993, Chile
- Center for Behavioral Brain Sciences (CBBS), D-39106 Magdeburg, Germany
| | - Dirk Montag
- Neurogenetics Laboratory, Leibniz Institute for Neurobiology, Brenneckestr. 6, D-39118 Magdeburg, Germany; (X.L.); (Y.L.)
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24
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Corradi GR, Mazzitelli LR, Petrovich GD, de Tezanos Pinto F, Rochi L, Adamo HP. Plasma Membrane Ca 2+ Pump PMCA4z Is More Active Than Splicing Variant PMCA4x. Front Cell Neurosci 2021; 15:668371. [PMID: 34512262 PMCID: PMC8428515 DOI: 10.3389/fncel.2021.668371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 07/22/2021] [Indexed: 11/13/2022] Open
Abstract
The plasma membrane Ca2+ pumps (PMCA) are P-ATPases that control Ca2+ signaling and homeostasis by transporting Ca2+ out of the eukaryotic cell. Humans have four genes that code for PMCA isoforms (PMCA1-4). A large diversity of PMCA isoforms is generated by alternative mRNA splicing at sites A and C. The different PMCA isoforms are expressed in a cell-type and developmental-specific manner and exhibit differential sensitivity to a great number of regulatory mechanisms. PMCA4 has two A splice variants, the forms "x" and "z". While PMCA4x is ubiquitously expressed and relatively well-studied, PMCA4z is less characterized and its expression is restricted to some tissues such as the brain and heart muscle. PMCA4z lacks a stretch of 12 amino acids in the so-called A-M3 linker, a conformation-sensitive region of the molecule connecting the actuator domain (A) with the third transmembrane segment (M3). We expressed in yeast PMCA4 variants "x" and "z", maintaining constant the most frequent splice variant "b" at the C-terminal end, and obtained purified preparations of both proteins. In the basal autoinhibited state, PMCA4zb showed a higher ATPase activity and a higher apparent Ca2+ affinity than PMCA4xb. Both isoforms were stimulated by calmodulin but PMCA4zb was more strongly activated by acidic lipids than PMCA4xb. The results indicate that a PMCA4 intrinsically more active and more responsive to acidic lipids is produced by the variant "z" of the splicing site A.
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Affiliation(s)
- Gerardo R Corradi
- Departamento de Química Biológica, Instituto de Química y Fisicoquímica Biológicas, Facultad de Farmacia y Bioquímica, Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Luciana R Mazzitelli
- Departamento de Química Biológica, Instituto de Química y Fisicoquímica Biológicas, Facultad de Farmacia y Bioquímica, Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Guido D Petrovich
- Departamento de Química Biológica, Instituto de Química y Fisicoquímica Biológicas, Facultad de Farmacia y Bioquímica, Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Felicitas de Tezanos Pinto
- Departamento de Química Biológica, Instituto de Química y Fisicoquímica Biológicas, Facultad de Farmacia y Bioquímica, Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Lucia Rochi
- Departamento de Química Biológica, Instituto de Química y Fisicoquímica Biológicas, Facultad de Farmacia y Bioquímica, Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Hugo P Adamo
- Departamento de Química Biológica, Instituto de Química y Fisicoquímica Biológicas, Facultad de Farmacia y Bioquímica, Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad de Buenos Aires, Buenos Aires, Argentina
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25
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Complexity and graded regulation of neuronal cell-type-specific alternative splicing revealed by single-cell RNA sequencing. Proc Natl Acad Sci U S A 2021; 118:2013056118. [PMID: 33674385 DOI: 10.1073/pnas.2013056118] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The enormous cellular diversity in the mammalian brain, which is highly prototypical and organized in a hierarchical manner, is dictated by cell-type-specific gene-regulatory programs at the molecular level. Although prevalent in the brain, the contribution of alternative splicing (AS) to the molecular diversity across neuronal cell types is just starting to emerge. Here, we systematically investigated AS regulation across over 100 transcriptomically defined neuronal types of the adult mouse cortex using deep single-cell RNA-sequencing data. We found distinct splicing programs between glutamatergic and GABAergic neurons and between subclasses within each neuronal class. These programs consist of overlapping sets of alternative exons showing differential splicing at multiple hierarchical levels. Using an integrative approach, our analysis suggests that RNA-binding proteins (RBPs) Celf1/2, Mbnl2, and Khdrbs3 are preferentially expressed and more active in glutamatergic neurons, while Elavl2 and Qk are preferentially expressed and more active in GABAergic neurons. Importantly, these and additional RBPs also contribute to differential splicing between neuronal subclasses at multiple hierarchical levels, and some RBPs contribute to splicing dynamics that do not conform to the hierarchical structure defined by the transcriptional profiles. Thus, our results suggest graded regulation of AS across neuronal cell types, which may provide a molecular mechanism to specify neuronal identity and function that are orthogonal to established classifications based on transcriptional regulation.
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26
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Ilic K, Mlinac-Jerkovic K, Sedmak G, Rosenzweig I, Kalanj-Bognar S. Neuroplastin in human cognition: review of literature and future perspectives. Transl Psychiatry 2021; 11:394. [PMID: 34282131 PMCID: PMC8289873 DOI: 10.1038/s41398-021-01509-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 06/16/2021] [Accepted: 06/23/2021] [Indexed: 02/07/2023] Open
Abstract
Synaptic glycoprotein neuroplastin is involved in synaptic plasticity and complex molecular events underlying learning and memory. Studies in mice and rats suggest that neuroplastin is essential for cognition, as it is needed for long-term potentiation and associative memory formation. Recently, it was found that some of the effects of neuroplastin are related to regulation of calcium homeostasis through interactions with plasma membrane calcium ATPases. Neuroplastin is increasingly seen as a key factor in complex brain functions, but studies in humans remain scarce. Here we summarize present knowledge about neuroplastin in human tissues and argue its genetic association with cortical thickness, intelligence, schizophrenia, and autism; specific immunolocalization depicting hippocampal trisynaptic pathway; potential role in tissue compensatory response in neurodegeneration; and high, almost housekeeping, level of spatio-temporal gene expression in the human brain. We also propose that neuroplastin acts as a housekeeper of neuroplasticity, and that it may be considered as an important novel cognition-related molecule in humans. Several promising directions for future investigations are suggested, which may complete our understanding of neuroplastin actions in molecular basis of human cognition.
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Affiliation(s)
- Katarina Ilic
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Šalata12, 10000, Zagreb, Croatia
| | - Kristina Mlinac-Jerkovic
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Šalata12, 10000, Zagreb, Croatia
| | - Goran Sedmak
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Šalata12, 10000, Zagreb, Croatia
| | - Ivana Rosenzweig
- Sleep and Brain Plasticity Centre, Department of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience (IoPPN), King's College London (KCL), Strand, London, WC2R 2LS, UK
- Sleep Disorders Centre, Guy's and St Thomas' Hospital, Great Maze Pond, London, SE1 9RT, UK
| | - Svjetlana Kalanj-Bognar
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Šalata12, 10000, Zagreb, Croatia.
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27
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Mlinac-Jerkovic K, Ilic K, Zjalić M, Mandić D, Debeljak Ž, Balog M, Damjanović V, Maček Hrvat N, Habek N, Kalanj-Bognar S, Schnaar RL, Heffer M. Who's in, who's out? Re-evaluation of lipid raft residents. J Neurochem 2021; 158:657-672. [PMID: 34081780 PMCID: PMC8363533 DOI: 10.1111/jnc.15446] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 05/19/2021] [Accepted: 05/19/2021] [Indexed: 01/01/2023]
Abstract
Lipid rafts, membrane microdomains enriched with (glyco)sphingolipids, cholesterol, and select proteins, act as cellular signalosomes. Various methods have been used to separate lipid rafts from bulk (non‐raft) membranes, but most often, non‐ionic detergent Triton X‐100 has been used in their isolation. However, Triton X‐100 is a reported disruptor of lipid rafts. Histological evidence confirmed raft disruption by Triton X‐100, but remarkably revealed raft stability to treatment with a related polyethylene oxide detergent, Brij O20. We report isolation of detergent‐resistant membranes from mouse brain using Brij O20 and its use to determine the distribution of major mammalian brain gangliosides, GM1, GD1a, GD1b and GT1b. A different distribution of gangliosides—classically used as a raft marker—was discovered using Brij O20 versus Triton X‐100. Immunohistochemistry and imaging mass spectrometry confirm the results. Use of Brij O20 results in a distinctive membrane distribution of gangliosides that is not all lipid raft associated, but depends on the ganglioside structure. This is the first report of a significant proportion of gangliosides outside raft domains. We also determined the distribution of proteins functionally related to neuroplasticity and known to be affected by ganglioside environment, glutamate receptor subunit 2, amyloid precursor protein and neuroplastin and report the lipid raft populations of these proteins in mouse brain tissue. This work will enable more accurate lipid raft analysis with respect to glycosphingolipid and membrane protein composition and lead to improved resolution of lipid–protein interactions within biological membranes.
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Affiliation(s)
- Kristina Mlinac-Jerkovic
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Zagreb, Croatia.,Department of Chemistry and Biochemistry, School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Katarina Ilic
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Milorad Zjalić
- Department of Medical Biology and Genetics, Faculty of Medicine, University of Osijek, Osijek, Croatia
| | - Dario Mandić
- Clinical Institute of Laboratory Diagnostics, Osijek University Hospital, Osijek, Croatia.,Department of Medical Chemistry, Biochemistry and Clinical Chemistry, Faculty of Medicine, University of Osijek, Osijek, Croatia
| | - Željko Debeljak
- Clinical Institute of Laboratory Diagnostics, Osijek University Hospital, Osijek, Croatia.,Department of Pharmacology, Faculty of Medicine, University of Osijek, Osijek, Croatia
| | - Marta Balog
- Department of Medical Biology and Genetics, Faculty of Medicine, University of Osijek, Osijek, Croatia
| | - Vladimir Damjanović
- Department of Chemistry and Biochemistry, School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Nikolina Maček Hrvat
- Biochemistry and Organic Analytical Chemistry Unit, Institute for Medical Research and Occupational Health, Zagreb, Croatia
| | - Nikola Habek
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Svjetlana Kalanj-Bognar
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Zagreb, Croatia.,Department of Chemistry and Biochemistry, School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Ronald L Schnaar
- Departments of Pharmacology and Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Marija Heffer
- Department of Medical Biology and Genetics, Faculty of Medicine, University of Osijek, Osijek, Croatia
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28
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Paule SG, Heng S, Samarajeewa N, Li Y, Mansilla M, Webb AI, Nebl T, Young SL, Lessey BA, Hull ML, Scelwyn M, Lim R, Vollenhoven B, Rombauts LJ, Nie G. Podocalyxin is a key negative regulator of human endometrial epithelial receptivity for embryo implantation. Hum Reprod 2021; 36:1353-1366. [PMID: 33822049 DOI: 10.1093/humrep/deab032] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 12/09/2020] [Indexed: 02/02/2023] Open
Abstract
STUDY QUESTION How is endometrial epithelial receptivity, particularly adhesiveness, regulated at the luminal epithelial surface for embryo implantation in the human? SUMMARY ANSWER Podocalyxin (PCX), a transmembrane protein, was identified as a key negative regulator of endometrial epithelial receptivity; specific downregulation of PCX in the luminal epithelium in the mid-secretory phase, likely mediated by progesterone, may act as a critical step in converting endometrial surface from a non-receptive to an implantation-permitting state. WHAT IS KNOWN ALREADY The human endometrium must undergo major molecular and cellular changes to transform from a non-receptive to a receptive state to accommodate embryo implantation. However, the fundamental mechanisms governing receptivity, particularly at the luminal surface where the embryo first interacts with, are not well understood. A widely held view is that upregulation of adhesion-promoting molecules is important, but the details are not well characterized. STUDY DESIGN, SIZE, DURATION This study first aimed to identify novel adhesion-related membrane proteins with potential roles in receptivity in primary human endometrial epithelial cells (HEECs). Further experiments were then conducted to determine candidates' in vivo expression pattern in the human endometrium across the menstrual cycle, regulation by progesterone using cell culture, and functional importance in receptivity using in vitro human embryo attachment and invasion models. PARTICIPANTS/MATERIALS, SETTING, METHODS Primary HEECs (n = 9) were isolated from the proliferative phase endometrial tissue, combined into three pools, subjected to plasma membrane protein enrichment by ultracentrifugation followed by proteomics analysis, which led to the discovery of PCX as a novel candidate of interest. Immunohistochemical analysis determined the in vivo expression pattern and cellular localization of PCX in the human endometrium across the menstrual cycle (n = 23). To investigate whether PCX is regulated by progesterone, the master driver of endometrial differentiation, primary HEECs were treated in culture with estradiol and progesterone and analyzed by RT-PCR (n = 5) and western blot (n = 4). To demonstrate that PCX acts as a negative regulator of receptivity, PCX was overexpressed in Ishikawa cells (a receptive line) and the impact on receptivity was determined using in vitro attachment (n = 3-5) and invasion models (n = 4-6), in which an Ishikawa monolayer mimicked the endometrial surface and primary human trophoblast spheroids mimicked embryos. Mann-Whitney U-test and ANOVA analyses established statistical significance at *P ≤ 0.05 and **P ≤ 0.01. MAIN RESULTS AND THE ROLE OF CHANCE PCX was expressed on the apical surface of all epithelial and endothelial cells in the non-receptive endometrium, but selectively downregulated in the luminal epithelium from the mid-secretory phase coinciding with the establishment of receptivity. Progesterone was confirmed to be able to suppress PCX in primary HEECs, suggesting this hormone likely mediates the downregulation of luminal PCX in vivo for receptivity. Overexpression of PCX in Ishikawa monolayer inhibited not only the attachment but also the penetration of human embryo surrogates, demonstrating that PCX acts as an important negative regulator of epithelial receptivity for implantation. LIMITATIONS, REASONS FOR CAUTION Primary HEECs isolated from the human endometrial tissue contained a mixture of luminal and glandular epithelial cells, as further purification into subtypes was not possible due to the lack of specific markers. Future study would need to investigate how progesterone differentially regulates PCX in endometrial epithelial subtypes. In addition, this study used primary human trophoblast spheroids as human embryo mimics and Ishikawa as endometrial epithelial cells in functional models, future studies with human blastocysts and primary epithelial cells would further validate the findings. WIDER IMPLICATIONS OF THE FINDINGS The findings of this study add important new knowledge to the understanding of human endometrial remodeling for receptivity. The identification of PCX as a negative regulator of epithelial receptivity and the knowledge that its specific downregulation in the luminal epithelium coincides with receptivity development may provide new avenues to assess endometrial receptivity and individualize endometrial preparation protocols in assisted reproductive technology (ART). The study also discovered PCX as progesterone target in HEECs, identifying a potentially useful functional biomarker to monitor progesterone action, such as in the optimization of progesterone type/dose/route of administration for luteal support. STUDY FUNDING/COMPETING INTEREST(S) Study funding was obtained from ESHRE, Monash IVF and NHMRC. LR reports potential conflict of interests (received grants from Ferring Australia; personal fees from Monash IVF Group and Ferring Australia; and non-financial support from Merck Serono, MSD, and Guerbet outside the submitted work. LR is also a minority shareholder and the Group Medical Director for Monash IVF Group, a provider of fertility preservation services). The remaining authors have no potential conflict of interest to declare. TRIAL REGISTRATION NUMBER NA.
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Affiliation(s)
- Sarah G Paule
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, VIC, Australia
| | - Sophea Heng
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Implantation and Pregnancy Research Laboratory, School of Health and Biomedical Sciences, RMIT University, VIC, Australia
| | - Nirukshi Samarajeewa
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Implantation and Pregnancy Research Laboratory, School of Health and Biomedical Sciences, RMIT University, VIC, Australia
| | - Ying Li
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Implantation and Pregnancy Research Laboratory, School of Health and Biomedical Sciences, RMIT University, VIC, Australia
| | - Mary Mansilla
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Implantation and Pregnancy Research Laboratory, School of Health and Biomedical Sciences, RMIT University, VIC, Australia
| | - Andrew I Webb
- Advance Technology and Biology Division, The Walter and Eliza Hall Institute, Parkville, VIC, Australia
| | - Thomas Nebl
- Advance Technology and Biology Division, The Walter and Eliza Hall Institute, Parkville, VIC, Australia
| | - Steven L Young
- Department of Obstetrics and Gynecology, University of North Carolina, Chapel Hill, NC, USA
| | - Bruce A Lessey
- Department of Obstetrics and Gynecology, Greenville Health System, Greenville, SC, USA
| | - M Louise Hull
- The Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | | | - Rebecca Lim
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Obstetrics and Gynaecology, Monash University, Clayton, VIC, Australia
| | - Beverley Vollenhoven
- Department of Obstetrics and Gynaecology, Monash University, Clayton, VIC, Australia.,Womens and Newborn Programme, Monash Health, Clayton, VIC, Australia
| | - Luk J Rombauts
- Department of Obstetrics and Gynaecology, Monash University, Clayton, VIC, Australia.,Womens and Newborn Programme, Monash Health, Clayton, VIC, Australia
| | - Guiying Nie
- Centre for Reproductive Health, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Implantation and Pregnancy Research Laboratory, School of Health and Biomedical Sciences, RMIT University, VIC, Australia
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Persistent proteomic changes in glutamatergic and GABAergic signaling in the amygdala of adolescent rats exposed to chlorpyrifos as juveniles. Neurotoxicology 2021; 85:234-244. [PMID: 34058248 DOI: 10.1016/j.neuro.2021.05.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 04/23/2021] [Accepted: 05/24/2021] [Indexed: 12/25/2022]
Abstract
Chlorpyrifos (CPF) remains one of the most widely used organophosphorus insecticides (OPs) despite the concerns about its developmental neurotoxicity. Developmental exposure to CPF has long-lasting negative impacts, including abnormal emotional behaviors. These negative impacts are observed at exposure levels do not cause inhibition of acetylcholinesterase, the canonical target of OPs. Exposure to CPF at these levels inhibits the endocannabinoid metabolizing enzyme fatty acid amide hydrolase (FAAH) but it is not clear what the persistent effects of this inhibition are. To investigate this, male rat pups were exposed orally to either corn oil, 0.75 mg/kg CPF, or 0.02 mg/kg PF-04457845 (PF; a specific inhibitor of FAAH) daily from postnatal day 10 (PND10) - PND16. This dosage of CPF does not inhibit brain cholinesterase activity but inhibits FAAH activity. On PND38 (adolescence), the protein expression in the amygdala was determined using a label-free shotgun proteomic approach. The analysis of control vs CPF and control vs PF led to the identification of 44 and 142 differentially regulated proteins, respectively. Gene ontology enrichment analysis revealed that most of the proteins with altered expression in both CPF and PF treatment groups were localized in the synapse-related regions, such as presynaptic membrane, postsynaptic density, and synaptic vesicle. The different biological processes affected by both treatment groups included persistent synaptic potentiation, glutamate receptor signaling, protein phosphorylation, and chemical synaptic transmission. These results also indicated disturbances in the balance between glutamatergic (↓ Glutamate AMPA receptor 2, ↓ Excitatory amino acid transporter 2, and ↑ vesicular glutamate transporter 2) and GABAergic signaling (↑ GABA transporter 3 and ↑ glutamate decarboxylase 2). This imbalance could play a role in the abnormal emotional behavior that we have previously reported. These results suggest that there is a similar pattern of expression between CPF and PF, and both these chemicals can persistently alter emotional behavior as a consequence of inhibition of FAAH.
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30
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León A, Aparicio GI, Scorticati C. Neuronal Glycoprotein M6a: An Emerging Molecule in Chemical Synapse Formation and Dysfunction. Front Synaptic Neurosci 2021; 13:661681. [PMID: 34017241 PMCID: PMC8129562 DOI: 10.3389/fnsyn.2021.661681] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 04/07/2021] [Indexed: 12/27/2022] Open
Abstract
The cellular and molecular mechanisms underlying neuropsychiatric and neurodevelopmental disorders show that most of them can be categorized as synaptopathies-or damage of synaptic function and plasticity. Synaptic formation and maintenance are orchestrated by protein complexes that are in turn regulated in space and time during neuronal development allowing synaptic plasticity. However, the exact mechanisms by which these processes are managed remain unknown. Large-scale genomic and proteomic projects led to the discovery of new molecules and their associated variants as disease risk factors. Neuronal glycoprotein M6a, encoded by the GPM6A gene is emerging as one of these molecules. M6a has been involved in neuron development and synapse formation and plasticity, and was also recently proposed as a gene-target in various neuropsychiatric disorders where it could also be used as a biomarker. In this review, we provide an overview of the structure and molecular mechanisms by which glycoprotein M6a participates in synapse formation and maintenance. We also review evidence collected from patients carrying mutations in the GPM6A gene; animal models, and in vitro studies that together emphasize the relevance of M6a, particularly in synapses and in neurological conditions.
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Affiliation(s)
| | | | - Camila Scorticati
- Instituto de Investigaciones Biotecnológicas “Rodolfo A. Ugalde”, Universidad Nacional de San Martín and Consejo Nacional de Investigaciones Científicas y Técnicas (IIBio-UNSAM-CONICET), Buenos Aires, Argentina
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31
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Balog M, Blažetić S, Ivić V, Labak I, Krajnik B, Marin R, Canerina-Amaro A, de Pablo DP, Bardak A, Gaspar R, Szűcs KF, Vari SG, Heffer M. Disarranged neuroplastin environment upon aging and chronic stress recovery in female Sprague Dawley rats. Eur J Neurosci 2021; 55:2474-2490. [PMID: 33909305 PMCID: PMC9290558 DOI: 10.1111/ejn.15256] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 04/14/2021] [Accepted: 04/21/2021] [Indexed: 11/27/2022]
Abstract
Chronic stress produces long-term metabolic changes throughout the superfamily of nuclear receptors, potentially causing various pathologies. Sex hormones modulate the stress response and generate a sex-specific age-dependent metabolic imprint, especially distinct in the reproductive senescence of females. We monitored chronic stress recovery in two age groups of female Sprague Dawley rats to determine whether stress and/or aging structurally changed the glycolipid microenvironment, a milieu playing an important role in cognitive functions. Old females experienced memory impairment even at basal conditions, which was additionally amplified by stress. On the other hand, the memory of young females was not disrupted. Stress recovery was followed by a microglial decrease and an increase in astrocyte count in the hippocampal immune system. Since dysfunction of the brain immune system could contribute to disturbed synaptogenesis, we analyzed neuroplastin expression and the lipid environment. Neuroplastin microenvironments were explored by analyzing immunofluorescent stainings using a newly developed Python script method. Stress reorganized glycolipid microenvironment in the Cornu Ammonis 1 (CA1) and dentate gyrus (DG) hippocampal regions of old females but in a very different fashion, thus affecting neuroplasticity. The postulation of four possible neuroplastin environments pointed to the GD1a ganglioside enrichment during reproductive senescence of stressed females, as well as its high dispersion in both regions and to GD1a and GM1 loss in the CA1 region. A specific lipid environment might influence neuroplastin functionality and underlie synaptic dysfunction triggered by a combination of aging and chronic stress.
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Affiliation(s)
- Marta Balog
- Department of Medical Biology and Genetics, Faculty of Medicine, J. J. Strossmayer University of Osijek, Osijek, Croatia
| | - Senka Blažetić
- Department of Biology, J. J. Strossmayer University of Osijek, Osijek, Croatia
| | - Vedrana Ivić
- Department of Medical Biology and Genetics, Faculty of Medicine, J. J. Strossmayer University of Osijek, Osijek, Croatia
| | - Irena Labak
- Department of Biology, J. J. Strossmayer University of Osijek, Osijek, Croatia
| | - Bartosz Krajnik
- Department of Experimental Physics, Wroclaw University of Science and Technology, Wroclaw, Poland
| | - Raquel Marin
- Laboratory of Cellular Neurobiology, Department of Basic Medical Sciences, School of Health Sciences, Universidad de La Laguna, La Laguna, Spain
| | - Ana Canerina-Amaro
- Laboratory of Cellular Neurobiology, Department of Basic Medical Sciences, School of Health Sciences, Universidad de La Laguna, La Laguna, Spain
| | - Daniel Pereda de Pablo
- Laboratory of Cellular Neurobiology, Department of Basic Medical Sciences, School of Health Sciences, Universidad de La Laguna, La Laguna, Spain
| | - Ana Bardak
- Department of Medical Biology and Genetics, Faculty of Medicine, J. J. Strossmayer University of Osijek, Osijek, Croatia
| | - Robert Gaspar
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Interdisciplinary Excellence Centre, University of Szeged, Szeged, Hungary
| | - Kálmán Ferenc Szűcs
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Interdisciplinary Excellence Centre, University of Szeged, Szeged, Hungary
| | - Sandor G Vari
- Cedars-Sinai Medical Center, International Research and Innovation in Medicine Program, Los Angeles, CA, USA
| | - Marija Heffer
- Department of Medical Biology and Genetics, Faculty of Medicine, J. J. Strossmayer University of Osijek, Osijek, Croatia
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32
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Lin X, Brunk MGK, Yuanxiang P, Curran AW, Zhang E, Stöber F, Goldschmidt J, Gundelfinger ED, Vollmer M, Happel MFK, Herrera-Molina R, Montag D. Neuroplastin expression is essential for hearing and hair cell PMCA expression. Brain Struct Funct 2021; 226:1533-1551. [PMID: 33844052 PMCID: PMC8096745 DOI: 10.1007/s00429-021-02269-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 03/27/2021] [Indexed: 12/25/2022]
Abstract
Hearing deficits impact on the communication with the external world and severely compromise perception of the surrounding. Deafness can be caused by particular mutations in the neuroplastin (Nptn) gene, which encodes a transmembrane recognition molecule of the immunoglobulin (Ig) superfamily and plasma membrane Calcium ATPase (PMCA) accessory subunit. This study investigates whether the complete absence of neuroplastin or the loss of neuroplastin in the adult after normal development lead to hearing impairment in mice analyzed by behavioral, electrophysiological, and in vivo imaging measurements. Auditory brainstem recordings from adult neuroplastin-deficient mice (Nptn-/-) show that these mice are deaf. With age, hair cells and spiral ganglion cells degenerate in Nptn-/- mice. Adult Nptn-/- mice fail to behaviorally respond to white noise and show reduced baseline blood flow in the auditory cortex (AC) as revealed by single-photon emission computed tomography (SPECT). In adult Nptn-/- mice, tone-evoked cortical activity was not detectable within the primary auditory field (A1) of the AC, although we observed non-persistent tone-like evoked activities in electrophysiological recordings of some young Nptn-/- mice. Conditional ablation of neuroplastin in Nptnlox/loxEmx1Cre mice reveals that behavioral responses to simple tones or white noise do not require neuroplastin expression by central glutamatergic neurons. Loss of neuroplastin from hair cells in adult NptnΔlox/loxPrCreERT mice after normal development is correlated with increased hearing thresholds and only high prepulse intensities result in effective prepulse inhibition (PPI) of the startle response. Furthermore, we show that neuroplastin is required for the expression of PMCA 2 in outer hair cells. This suggests that altered Ca2+ homeostasis underlies the observed hearing impairments and leads to hair cell degeneration. Our results underline the importance of neuroplastin for the development and the maintenance of the auditory system.
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Affiliation(s)
- Xiao Lin
- Neurogenetics Laboratory, Leibniz Institute for Neurobiology, Brenneckestr. 6, 39118, Magdeburg, Germany
- Department Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Brenneckestr. 6, 39118, Magdeburg, Germany
| | - Michael G K Brunk
- Department System Physiology and Learning, AG CortXplorer, Leibniz Institute for Neurobiology, Brenneckestr. 6, 39118, Magdeburg, Germany
| | - Pingan Yuanxiang
- Research Group Neuroplasticity, Leibniz Institute for Neurobiology, Brenneckestr. 6, 39118, Magdeburg, Germany
| | - Andrew W Curran
- Department System Physiology and Learning, Leibniz Institute for Neurobiology, Brenneckestr. 6, 39118, Magdeburg, Germany
| | - Enqi Zhang
- Institute of Medical Psychology, Otto-Von-Guericke University Magdeburg, University Hospital, Leipziger Str. 44, 39120, Magdeburg, Germany
| | - Franziska Stöber
- Department System Physiology and Learning, Leibniz Institute for Neurobiology, Brenneckestr. 6, 39118, Magdeburg, Germany
| | - Jürgen Goldschmidt
- Department System Physiology and Learning, Leibniz Institute for Neurobiology, Brenneckestr. 6, 39118, Magdeburg, Germany
- Center for Behavioral Brain Sciences (CBBS), 39106, Magdeburg, Germany
| | - Eckart D Gundelfinger
- Department Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Brenneckestr. 6, 39118, Magdeburg, Germany
- Medical Faculty, Molecular Neuroscience, Otto-Von-Guericke University Magdeburg, University Hospital, Leipziger Str. 44, 39120, Magdeburg, Germany
- Center for Behavioral Brain Sciences (CBBS), 39106, Magdeburg, Germany
| | - Maike Vollmer
- Department System Physiology and Learning, Leibniz Institute for Neurobiology, Brenneckestr. 6, 39118, Magdeburg, Germany
- Department of Otolaryngology-Head and Neck Surgery, Otto-Von-Guericke University Magdeburg, University Hospital, Leipziger Str. 44, 39120, Magdeburg, Germany
| | - Max F K Happel
- Department System Physiology and Learning, AG CortXplorer, Leibniz Institute for Neurobiology, Brenneckestr. 6, 39118, Magdeburg, Germany
- Center for Behavioral Brain Sciences (CBBS), 39106, Magdeburg, Germany
| | - Rodrigo Herrera-Molina
- Department Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Brenneckestr. 6, 39118, Magdeburg, Germany
- Centro Integrativo de Biología Y Química Aplicada, Universidad Bernardo O'Higgins, 8307993, Santiago, Chile
- Center for Behavioral Brain Sciences (CBBS), 39106, Magdeburg, Germany
| | - Dirk Montag
- Neurogenetics Laboratory, Leibniz Institute for Neurobiology, Brenneckestr. 6, 39118, Magdeburg, Germany.
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An extended catalogue of tandem alternative splice sites in human tissue transcriptomes. PLoS Comput Biol 2021; 17:e1008329. [PMID: 33826604 PMCID: PMC8055015 DOI: 10.1371/journal.pcbi.1008329] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 04/19/2021] [Accepted: 03/22/2021] [Indexed: 12/18/2022] Open
Abstract
Tandem alternative splice sites (TASS) is a special class of alternative splicing events that are characterized by a close tandem arrangement of splice sites. Most TASS lack functional characterization and are believed to arise from splicing noise. Based on the RNA-seq data from the Genotype Tissue Expression project, we present an extended catalogue of TASS in healthy human tissues and analyze their tissue-specific expression. The expression of TASS is usually dominated by one major splice site (maSS), while the expression of minor splice sites (miSS) is at least an order of magnitude lower. Among 46k miSS with sufficient read support, 9k (20%) are significantly expressed above the expected noise level, and among them 2.5k are expressed tissue-specifically. We found significant correlations between tissue-specific expression of RNA-binding proteins (RBP), tissue-specific expression of miSS, and miSS response to RBP inactivation by shRNA. In combination with RBP profiling by eCLIP, this allowed prediction of novel cases of tissue-specific splicing regulation including a miSS in QKI mRNA that is likely regulated by PTBP1. The analysis of human primary cell transcriptomes suggested that both tissue-specific and cell-type-specific factors contribute to the regulation of miSS expression. More than 20% of tissue-specific miSS affect structured protein regions and may adjust protein-protein interactions or modify the stability of the protein core. The significantly expressed miSS evolve under the same selection pressure as maSS, while other miSS lack signatures of evolutionary selection and conservation. Using mixture models, we estimated that not more than 15% of maSS and not more than 54% of tissue-specific miSS are noisy, while the proportion of noisy splice sites among non-significantly expressed miSS is above 63%. Pre-mRNA splicing is an important step in the processing of the genomic information during gene expression. During splicing, introns are excised from a gene transcript, and the remaining exons are ligated. Our work concerns one its particular subtype, which involves the so-called tandem alternative splice sites, a group of closely located exon borders that are used alternatively. We analyzed RNA-seq measurements of gene expression provided by the Genotype-Tissue Expression (GTEx) project, the largest to-date collection of such measurements in healthy human tissues, and constructed a detailed catalogue of tandem alternative splice sites. Within this catalogue, we characterized patterns of tissue-specific expression, regulation, impact on protein structure, and evolutionary selection acting on tandem alternative splice sites. In a number of genes, we predicted regulatory mechanisms that could be responsible for choosing one of many tandem alternative splice sites. The results of this study provide an invaluable resource for molecular biologists studying alternative splicing.
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Fairweather SJ, Shah N, Brӧer S. Heteromeric Solute Carriers: Function, Structure, Pathology and Pharmacology. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 21:13-127. [PMID: 33052588 DOI: 10.1007/5584_2020_584] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Solute carriers form one of three major superfamilies of membrane transporters in humans, and include uniporters, exchangers and symporters. Following several decades of molecular characterisation, multiple solute carriers that form obligatory heteromers with unrelated subunits are emerging as a distinctive principle of membrane transporter assembly. Here we comprehensively review experimentally established heteromeric solute carriers: SLC3-SLC7 amino acid exchangers, SLC16 monocarboxylate/H+ symporters and basigin/embigin, SLC4A1 (AE1) and glycophorin A exchanger, SLC51 heteromer Ost α-Ost β uniporter, and SLC6 heteromeric symporters. The review covers the history of the heteromer discovery, transporter physiology, structure, disease associations and pharmacology - all with a focus on the heteromeric assembly. The cellular locations, requirements for complex formation, and the functional role of dimerization are extensively detailed, including analysis of the first complete heteromer structures, the SLC7-SLC3 family transporters LAT1-4F2hc, b0,+AT-rBAT and the SLC6 family heteromer B0AT1-ACE2. We present a systematic analysis of the structural and functional aspects of heteromeric solute carriers and conclude with common principles of their functional roles and structural architecture.
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Affiliation(s)
- Stephen J Fairweather
- Research School of Biology, Australian National University, Canberra, ACT, Australia. .,Resarch School of Chemistry, Australian National University, Canberra, ACT, Australia.
| | - Nishank Shah
- Research School of Biology, Australian National University, Canberra, ACT, Australia
| | - Stefan Brӧer
- Research School of Biology, Australian National University, Canberra, ACT, Australia.
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35
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Jiang CH, Wei M, Zhang C, Shi YS. The amino-terminal domain of GluA1 mediates LTP maintenance via interaction with neuroplastin-65. Proc Natl Acad Sci U S A 2021; 118:e2019194118. [PMID: 33627404 PMCID: PMC7936340 DOI: 10.1073/pnas.2019194118] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Long-term potentiation (LTP) has long been considered as an important cellular mechanism for learning and memory. LTP expression involves NMDA receptor-dependent synaptic insertion of AMPA receptors (AMPARs). However, how AMPARs are recruited and anchored at the postsynaptic membrane during LTP remains largely unknown. In this study, using CRISPR/Cas9 to delete the endogenous AMPARs and replace them with the mutant forms in single neurons, we have found that the amino-terminal domain (ATD) of GluA1 is required for LTP maintenance. Moreover, we show that GluA1 ATD directly interacts with the cell adhesion molecule neuroplastin-65 (Np65). Neurons lacking Np65 exhibit severely impaired LTP maintenance, and Np65 deletion prevents GluA1 from rescuing LTP in AMPARs-deleted neurons. Thus, our study reveals an essential role for GluA1/Np65 binding in anchoring AMPARs at the postsynaptic membrane during LTP.
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Affiliation(s)
- Chao-Hua Jiang
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Neurology, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing University, 210032 Nanjing, China
- Ministry of Education Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing University, 210032 Nanjing, China
| | - Mengping Wei
- School of Basic Medical Sciences, Beijing Key Laboratory of Neural Regeneration and Repair, Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing 100069, China
| | - Chen Zhang
- School of Basic Medical Sciences, Beijing Key Laboratory of Neural Regeneration and Repair, Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing 100069, China;
| | - Yun Stone Shi
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Neurology, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing University, 210032 Nanjing, China;
- Ministry of Education Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing University, 210032 Nanjing, China
- Institute for Brain Sciences, Nanjing University, 210032 Nanjing, China
- Chemistry and Biomedicine Innovation Center, Nanjing University, 210032 Nanjing, China
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36
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Joglekar A, Prjibelski A, Mahfouz A, Collier P, Lin S, Schlusche AK, Marrocco J, Williams SR, Haase B, Hayes A, Chew JG, Weisenfeld NI, Wong MY, Stein AN, Hardwick SA, Hunt T, Wang Q, Dieterich C, Bent Z, Fedrigo O, Sloan SA, Risso D, Jarvis ED, Flicek P, Luo W, Pitt GS, Frankish A, Smit AB, Ross ME, Tilgner HU. A spatially resolved brain region- and cell type-specific isoform atlas of the postnatal mouse brain. Nat Commun 2021; 12:463. [PMID: 33469025 PMCID: PMC7815907 DOI: 10.1038/s41467-020-20343-5] [Citation(s) in RCA: 88] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 11/27/2020] [Indexed: 01/19/2023] Open
Abstract
Splicing varies across brain regions, but the single-cell resolution of regional variation is unclear. We present a single-cell investigation of differential isoform expression (DIE) between brain regions using single-cell long-read sequencing in mouse hippocampus and prefrontal cortex in 45 cell types at postnatal day 7 ( www.isoformAtlas.com ). Isoform tests for DIE show better performance than exon tests. We detect hundreds of DIE events traceable to cell types, often corresponding to functionally distinct protein isoforms. Mostly, one cell type is responsible for brain-region specific DIE. However, for fewer genes, multiple cell types influence DIE. Thus, regional identity can, although rarely, override cell-type specificity. Cell types indigenous to one anatomic structure display distinctive DIE, e.g. the choroid plexus epithelium manifests distinct transcription-start-site usage. Spatial transcriptomics and long-read sequencing yield a spatially resolved splicing map. Our methods quantify isoform expression with cell-type and spatial resolution and it contributes to further our understanding of how the brain integrates molecular and cellular complexity.
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Affiliation(s)
- Anoushka Joglekar
- Brain and Mind Research Institute and Center for Neurogenetics, Weill Cornell Medicine, New York, NY, USA
| | - Andrey Prjibelski
- Center for Algorithmic Biotechnology, Institute of Translational Biomedicine, St. Petersburg State University, St Petersburg, Russia
| | - Ahmed Mahfouz
- Department of Human Genetics, Leiden University Medical Center, Leiden, 2333 ZC, The Netherlands
- Leiden Computational Biology Center, Leiden University Medical Center, Leiden, 2333 ZC, The Netherlands
- Delft Bioinformatics Lab, Delft University of Technology, Delft, 2628 XE, The Netherlands
| | - Paul Collier
- Brain and Mind Research Institute and Center for Neurogenetics, Weill Cornell Medicine, New York, NY, USA
| | - Susan Lin
- Graduate Program in Neuroscience, Weill Cornell Medical College, 1300 York Avenue, New York, NY, 10065, USA
- Cardiovascular Research Institute, Weill Cornell Medicine, New York, NY, USA
| | - Anna Katharina Schlusche
- Brain and Mind Research Institute and Center for Neurogenetics, Weill Cornell Medicine, New York, NY, USA
| | - Jordan Marrocco
- Harold and Margaret Milliken Hatch Laboratory of Neuroendocrinology, The Rockefeller University, New York, NY, USA
| | | | - Bettina Haase
- The Vertebrate Genomes Lab, The Rockefeller University, New York, NY, USA
| | | | | | | | - Man Ying Wong
- Brain and Mind Research Institute and Appel Alzheimer's Research Institute, Weill Cornell Medicine, New York, NY, USA
| | | | - Simon A Hardwick
- Brain and Mind Research Institute and Center for Neurogenetics, Weill Cornell Medicine, New York, NY, USA
- Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, NSW, Australia
| | - Toby Hunt
- European Molecular Biology Laboratory, European Bioinformatics Institute, Hinxton, UK
| | - Qi Wang
- Section of Bioinformatics and Systems Cardiology, University Hospital, 96120, Heidelberg, Germany
| | - Christoph Dieterich
- Section of Bioinformatics and Systems Cardiology, University Hospital, 96120, Heidelberg, Germany
| | | | - Olivier Fedrigo
- The Vertebrate Genomes Lab, The Rockefeller University, New York, NY, USA
| | - Steven A Sloan
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA
| | - Davide Risso
- Department of Statistical Sciences, University of Padova, Padova, Italy
| | - Erich D Jarvis
- The Vertebrate Genomes Lab, The Rockefeller University, New York, NY, USA
- Howard Hughes Medical Institute, Chevy Chase, MD, USA
| | - Paul Flicek
- European Molecular Biology Laboratory, European Bioinformatics Institute, Hinxton, UK
| | - Wenjie Luo
- Brain and Mind Research Institute and Appel Alzheimer's Research Institute, Weill Cornell Medicine, New York, NY, USA
| | - Geoffrey S Pitt
- Graduate Program in Neuroscience, Weill Cornell Medical College, 1300 York Avenue, New York, NY, 10065, USA
- Cardiovascular Research Institute, Weill Cornell Medicine, New York, NY, USA
| | - Adam Frankish
- European Molecular Biology Laboratory, European Bioinformatics Institute, Hinxton, UK
| | - August B Smit
- Department of Molecular and Cellular Neurobiology, Center for Neurogenomics and Cognitive Research, Amsterdam Neuroscience, VU University, Amsterdam, The Netherlands
| | - M Elizabeth Ross
- Brain and Mind Research Institute and Center for Neurogenetics, Weill Cornell Medicine, New York, NY, USA
| | - Hagen U Tilgner
- Brain and Mind Research Institute and Center for Neurogenetics, Weill Cornell Medicine, New York, NY, USA.
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37
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Vemula SK, Malci A, Junge L, Lehmann AC, Rama R, Hradsky J, Matute RA, Weber A, Prigge M, Naumann M, Kreutz MR, Seidenbecher CI, Gundelfinger ED, Herrera-Molina R. The Interaction of TRAF6 With Neuroplastin Promotes Spinogenesis During Early Neuronal Development. Front Cell Dev Biol 2020; 8:579513. [PMID: 33363141 PMCID: PMC7755605 DOI: 10.3389/fcell.2020.579513] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 11/11/2020] [Indexed: 11/22/2022] Open
Abstract
Correct brain wiring depends on reliable synapse formation. Nevertheless, signaling codes promoting synaptogenesis are not fully understood. Here, we report a spinogenic mechanism that operates during neuronal development and is based on the interaction of tumor necrosis factor receptor-associated factor 6 (TRAF6) with the synaptic cell adhesion molecule neuroplastin. The interaction between these proteins was predicted in silico and verified by co-immunoprecipitation in extracts from rat brain and co-transfected HEK cells. Binding assays show physical interaction between neuroplastin’s C-terminus and the TRAF-C domain of TRAF6 with a Kd value of 88 μM. As the two proteins co-localize in primordial dendritic protrusions, we used young cultures of rat and mouse as well as neuroplastin-deficient mouse neurons and showed with mutagenesis, knock-down, and pharmacological blockade that TRAF6 is required by neuroplastin to promote early spinogenesis during in vitro days 6-9, but not later. Time-framed TRAF6 blockade during days 6–9 reduced mEPSC amplitude, number of postsynaptic sites, synapse density and neuronal activity as neurons mature. Our data unravel a new molecular liaison that may emerge during a specific window of the neuronal development to determine excitatory synapse density in the rodent brain.
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Affiliation(s)
- Sampath Kumar Vemula
- Laboratory of Synaptic Signaling, Department of Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Magdeburg, Germany
| | - Ayse Malci
- Laboratory of Synaptic Signaling, Department of Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Magdeburg, Germany
| | - Lennart Junge
- Laboratory of Synaptic Signaling, Department of Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Magdeburg, Germany
| | - Anne-Christin Lehmann
- Laboratory of Synaptic Signaling, Department of Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Magdeburg, Germany
| | - Ramya Rama
- Laboratory of Synaptic Signaling, Department of Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Magdeburg, Germany
| | - Johannes Hradsky
- Laboratory of Synaptic Signaling, Department of Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Magdeburg, Germany
| | - Ricardo A Matute
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, United States.,Centro Integrativo de Biología y Química Aplicada, Universidad Bernardo O'Higgins, Santiago, Chile
| | - André Weber
- Laboratory of Synaptic Signaling, Department of Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Magdeburg, Germany
| | - Matthias Prigge
- Laboratory of Synaptic Signaling, Department of Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Magdeburg, Germany
| | - Michael Naumann
- Institute of Experimental Internal Medicine, Medical Faculty, Otto von Guericke University, Magdeburg, Germany
| | - Michael R Kreutz
- Laboratory of Synaptic Signaling, Department of Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Magdeburg, Germany.,Leibniz Group 'Dendritic Organelles and Synaptic Function', Center for Molecular Neurobiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Constanze I Seidenbecher
- Laboratory of Synaptic Signaling, Department of Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Magdeburg, Germany.,Center for Behavioral Brain Sciences, Magdeburg, Germany
| | - Eckart D Gundelfinger
- Laboratory of Synaptic Signaling, Department of Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Magdeburg, Germany.,Center for Behavioral Brain Sciences, Magdeburg, Germany.,Medical Faculty, Otto von Guericke University, Magdeburg, Germany
| | - Rodrigo Herrera-Molina
- Laboratory of Synaptic Signaling, Department of Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Magdeburg, Germany.,Centro Integrativo de Biología y Química Aplicada, Universidad Bernardo O'Higgins, Santiago, Chile.,Center for Behavioral Brain Sciences, Magdeburg, Germany
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Neuroplastin Modulates Anti-inflammatory Effects of MANF. iScience 2020; 23:101810. [PMID: 33299977 PMCID: PMC7702011 DOI: 10.1016/j.isci.2020.101810] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 06/22/2020] [Accepted: 11/11/2020] [Indexed: 02/07/2023] Open
Abstract
Endoplasmic reticulum (ER) stress is known to induce pro-inflammatory response and ultimately leads to cell death. Mesencephalic astrocyte-derived neurotrophic factor (MANF) is an ER-localized protein whose expression and secretion is induced by ER stress and a crucial survival factor. However, the underlying mechanism of how MANF exerts its cytoprotective activity remains unclear due to the lack of knowledge of its receptor. Here we show that Neuroplastin (NPTN) is such a receptor for MANF. Biochemical analysis shows the physiological interaction between MANF and NPTN on the cell surface. Binding of MANF to NPTN mitigates the inflammatory response and apoptosis via suppression of NF-kβ signaling. Our results demonstrate that NPTN is a cell surface receptor for MANF, which modulates inflammatory responses and cell death, and that the MANF-NPTN survival signaling described here provides potential therapeutic targets for the treatment of ER stress-related disorders, including diabetes mellitus, neurodegeneration, retinal degeneration, and Wolfram syndrome. Neuroplastin (NPTN) is a plasma membrane receptor for MANF NPTN regulates MANF-mediated suppression of inflammation NPTN regulates cell survival mediated by MANF under ER stress MANF-NPTN survival pathway provides potential therapeutic targets for ER stress-related disorders
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Ma X, Huang M, Zheng M, Dai C, Song Q, Zhang Q, Li Q, Gu X, Chen H, Jiang G, Yu Y, Liu X, Li S, Wang G, Chen H, Lu L, Gao X. ADSCs-derived extracellular vesicles alleviate neuronal damage, promote neurogenesis and rescue memory loss in mice with Alzheimer's disease. J Control Release 2020; 327:688-702. [PMID: 32931898 DOI: 10.1016/j.jconrel.2020.09.019] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 09/04/2020] [Accepted: 09/08/2020] [Indexed: 12/14/2022]
Abstract
Despite the various mechanisms that involved in the pathogenesis of Alzheimer's disease (AD), neuronal damage and synaptic dysfunction are the key events leading to cognition impairment. Therefore, neuroprotection and neurogenesis would provide essential alternatives to the rescue of AD cognitive function. Here we demonstrated that extracellular vesicles secreted from adipose-derived mesenchymal stem cells (ADSCs-derived EVs, abbreviated as EVs) entered the brain quickly and efficiently following intranasal administration, and majorly accumulated in neurons within the central nervous system (CNS). Proteomics analysis showed that EVs contained multiple proteins possessing neuroprotective and neurogenesis activities, and neuronal RNA sequencing showed genes enrichment in neuroprotection and neurogenesis following the treatment with EVs. As a result, EVs exerted powerful neuroprotective effect on Aβ1-42 oligomer or glutamate-induced neuronal toxicity, effectively ameliorated neurologic damage in the whole brain areas, remarkably increased newborn neurons and powerfully rescued memory deficits in APP/PS1 transgenic mice. EVs also reduced Aβ deposition and decreased microglia activation although in a less extent. Collectively, here we provide direct evidence that ADSCs-derived EVs may potentially serve as an alternative for AD therapy through alleviating neuronal damage and promoting neurogenesis.
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Affiliation(s)
- Xinyi Ma
- Department of Pharmacology and Chemical Biology, State Key Laboratory of Oncogenes and Related Genes, Shanghai Universities Collaborative Innovation Center for Translational Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Meng Huang
- Department of Pharmacology and Chemical Biology, State Key Laboratory of Oncogenes and Related Genes, Shanghai Universities Collaborative Innovation Center for Translational Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Mengna Zheng
- Department of Pharmacology and Chemical Biology, State Key Laboratory of Oncogenes and Related Genes, Shanghai Universities Collaborative Innovation Center for Translational Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Chengxiang Dai
- Cellular Biomedicine Group, Inc., Shanghai 201210, China
| | - Qingxiang Song
- Department of Pharmacology and Chemical Biology, State Key Laboratory of Oncogenes and Related Genes, Shanghai Universities Collaborative Innovation Center for Translational Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Qian Zhang
- Department of Pharmacology and Chemical Biology, State Key Laboratory of Oncogenes and Related Genes, Shanghai Universities Collaborative Innovation Center for Translational Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Qian Li
- Collaborative Innovation Center for Brain Science, Department of Anatomy and Physiology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China; Shanghai Research Center for Brain Science and Brain-Inspired Intelligence, Shanghai 201210, China
| | - Xiao Gu
- Department of Pharmacology and Chemical Biology, State Key Laboratory of Oncogenes and Related Genes, Shanghai Universities Collaborative Innovation Center for Translational Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Huan Chen
- Department of Pharmacology and Chemical Biology, State Key Laboratory of Oncogenes and Related Genes, Shanghai Universities Collaborative Innovation Center for Translational Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Gan Jiang
- Department of Pharmacology and Chemical Biology, State Key Laboratory of Oncogenes and Related Genes, Shanghai Universities Collaborative Innovation Center for Translational Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Ye Yu
- Department of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, 145 Middle Shan Dong Road, Shanghai 200001, China
| | - Xuesong Liu
- Department of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, 145 Middle Shan Dong Road, Shanghai 200001, China
| | - Suke Li
- Cellular Biomedicine Group, Inc., Shanghai 201210, China
| | - Gang Wang
- Department of Neurology, Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Hongzhuan Chen
- Department of Pharmacology and Chemical Biology, State Key Laboratory of Oncogenes and Related Genes, Shanghai Universities Collaborative Innovation Center for Translational Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China; Institute of Interdisciplinary Integrative Biomedical Research, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Liangjing Lu
- Department of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, 145 Middle Shan Dong Road, Shanghai 200001, China.
| | - Xiaoling Gao
- Department of Pharmacology and Chemical Biology, State Key Laboratory of Oncogenes and Related Genes, Shanghai Universities Collaborative Innovation Center for Translational Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.
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Biever A, Glock C, Tushev G, Ciirdaeva E, Dalmay T, Langer JD, Schuman EM. Monosomes actively translate synaptic mRNAs in neuronal processes. Science 2020; 367:367/6477/eaay4991. [PMID: 32001627 DOI: 10.1126/science.aay4991] [Citation(s) in RCA: 132] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 10/29/2019] [Accepted: 12/18/2019] [Indexed: 12/13/2022]
Abstract
To accommodate their complex morphology, neurons localize messenger RNAs (mRNAs) and ribosomes near synapses to produce proteins locally. However, a relative paucity of polysomes (considered the active sites of translation) detected in electron micrographs of neuronal processes has suggested a limited capacity for local protein synthesis. In this study, we used polysome profiling together with ribosome footprinting of microdissected rodent synaptic regions to reveal a surprisingly high number of dendritic and/or axonal transcripts preferentially associated with monosomes (single ribosomes). Furthermore, the neuronal monosomes were in the process of active protein synthesis. Most mRNAs showed a similar translational status in the cell bodies and neurites, but some transcripts exhibited differential ribosome occupancy in the compartments. Monosome-preferring transcripts often encoded high-abundance synaptic proteins. Thus, monosome translation contributes to the local neuronal proteome.
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Affiliation(s)
- Anne Biever
- Max Planck Institute for Brain Research, Frankfurt, Germany
| | - Caspar Glock
- Max Planck Institute for Brain Research, Frankfurt, Germany
| | - Georgi Tushev
- Max Planck Institute for Brain Research, Frankfurt, Germany
| | | | - Tamas Dalmay
- Max Planck Institute for Brain Research, Frankfurt, Germany
| | - Julian D Langer
- Max Planck Institute for Brain Research, Frankfurt, Germany.,Max Planck Institute of Biophysics, Frankfurt, Germany
| | - Erin M Schuman
- Max Planck Institute for Brain Research, Frankfurt, Germany.
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Ma C, Wang S, Wang G, Wu Y, Yang T, Shen W, Zhuang Y, Zhang L, Liu X, Yang L, Feng Y, Yu Y, Liu Z, Wang D. Protein spectrum changes in exosomes after therapeutic plasma exchange in patients with neuromyelitis optica. J Clin Apher 2020; 35:206-216. [PMID: 32240559 DOI: 10.1002/jca.21781] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 03/13/2020] [Accepted: 03/17/2020] [Indexed: 12/22/2022]
Abstract
INTRODUCTION Neuromyelitis optica (NMO) is an autoimmune disease with a high rate of blindness and positive for the detection of aquaporin-4 antibody (AQP4) in most patients. NMO acute attacks are managed by high-doses of intravenous methylprednisolone followed by oral taper, and if symptoms fail to resolve, therapeutic plasma exchange (TPE) is added. TPE can remove pathological antibodies and inflammatory factors leading to clinical improvement. METHODS A total of 40 TPE fluid collections from the first to fifth TPE treatments were obtained from eight patients. Exosomes were isolated by ultracentrifugation. Mass spectrometry analyses were used to compare protein change in TPE fluid collection exosomes after the first to the fifth TPE treatments in these patients. RESULTS We detected 647 exosome proteins through data-independent acquisition analysis. It was found that some unknown functional antibody fragments and complement pathway proteins decreased after TPE treatment. The results revealed a significant involvement of the following two key pathways: the primary immunodeficiency and systemic lupus erythematosus that may be associated with NMO pathophysiology and TPE treatment efficacy (P < .05). A series of complement proteins may contribute to NMO; in addition, the following proteins increased with plasma exchange: complement factor H-related protein 5, bridging integrator 2, neuroplastin, pigment epithelium-derived factor, ficolin-1, extracellular matrix protein 1, and fatty acid-binding protein 5. CONCLUSION Our study may provide a new perspective on the pathogenesis and treatment efficacy of NMO.
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Affiliation(s)
- Chunya Ma
- Department of Blood Transfusion, First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Shufang Wang
- Department of Blood Transfusion, First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Guibin Wang
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing, China
| | - Ying Wu
- Department of Blood Transfusion, First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Tianxin Yang
- Department of Blood Transfusion, First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Wanjun Shen
- Department of Nephrology, First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Yuan Zhuang
- Department of Blood Transfusion, First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Leiying Zhang
- Department of Blood Transfusion, First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Xiaomin Liu
- Department of Blood Transfusion, First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Lu Yang
- Department of Blood Transfusion, First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Yannan Feng
- Department of Blood Transfusion, First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Yang Yu
- Department of Blood Transfusion, First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Zhong Liu
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Deqing Wang
- Department of Blood Transfusion, First Medical Center of Chinese PLA General Hospital, Beijing, China
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42
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Tomonobu N, Kinoshita R, Sakaguchi M. S100 Soil Sensor Receptors and Molecular Targeting Therapy Against Them in Cancer Metastasis. Transl Oncol 2020; 13:100753. [PMID: 32193075 PMCID: PMC7078545 DOI: 10.1016/j.tranon.2020.100753] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 02/25/2020] [Accepted: 02/27/2020] [Indexed: 12/12/2022] Open
Abstract
The molecular mechanisms underlying the ‘seed and soil’ theory are unknown. S100A8/A9 (a heterodimer complex of S100A8 and S100A9 proteins that exhibits a ‘soil signal’) is a ligand for Toll-like receptor 4, causing distant melanoma cells to approach the lung as a ‘seeding’ site. Unknown soil sensors for S100A8/A9 may exist, e.g., extracellular matrix metalloproteinase inducer, neuroplastin, activated leukocyte cell adhesion molecule, and melanoma cell adhesion molecule. We call these receptor proteins ‘novel S100 soil sensor receptors (novel SSSRs).’ Here we review and summarize a crucial role of the S100A8/A9-novel SSSRs' axis in cancer metastasis. The binding of S100A8/A9 to individual SSSRs is important in cancer metastasis via upregulations of the epithelial-mesenchymal transition, cellular motility, and cancer cell invasiveness, plus the formation of an inflammatory immune suppressive environment in metastatic organ(s). These metastatic cellular events are caused by the SSSR-featured signal transductions we identified that provide cancer cells a driving force for metastasis. To deprive cancer cells of these metastatic forces, we developed novel biologics that prevent the interaction of S100A8/A9 with SSSRs, followed by the efficient suppression of S100A8/A9-mediated lung-tropic metastasis in vivo.
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Affiliation(s)
- Nahoko Tomonobu
- Department of Cell Biology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama-shi, Okayama 700-8558, Japan.
| | - Rie Kinoshita
- Department of Cell Biology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama-shi, Okayama 700-8558, Japan.
| | - Masakiyo Sakaguchi
- Department of Cell Biology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama-shi, Okayama 700-8558, Japan.
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Chitrala KN, Hernandez DG, Nalls MA, Mode NA, Zonderman AB, Ezike N, Evans MK. Race-specific alterations in DNA methylation among middle-aged African Americans and Whites with metabolic syndrome. Epigenetics 2019; 15:462-482. [PMID: 31739726 DOI: 10.1080/15592294.2019.1695340] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Metabolic syndrome (MetS) is a cluster of cardiometabolic risk factors for all-cause mortality, cardiovascular disease, and cancer. Identifying epigenetic alterations associated with MetS in African Americans (AAs) and Whites may provide insight into genes that influence its differential health outcomes. We examined DNA methylation (DNAm) and performed an epigenome-wide association study (EWAS) of MetS among AAs and Whites with and without MetS. We assessed age, race and poverty status associated DNAm among AAs (n = 225) and White (n = 233) adults using NCEP-ATP III guidelines. Genome-wide DNAm measurement was assessed using Illumina Infinium Methylation EPIC BeadChip. Differentially methylated positions (DMPs) and differentially methylated regions (DMRs) were identified using dmpFinder and bumphunter. EWAS was performed using CpGassoc. We found significant DMPs associated with age, poverty status and MetS in each race. GSTT1(Glutathione S-Transferase Theta 1) was one of the top-hypermethylated genes and MIPEP (Mitochondrial Intermediate Peptidase) was one of the most hypomethylated genes when comparing AAs with and without MetS. PPP1R13L (Protein Phosphatase 1 Regulatory Subunit 13 Like) was the top hypermethylated and SCD (stearoyl-CoA desaturase-1) was one of the most hypomethylated genes for Whites with and without MetS. EWAS results showed that DNAm differences might contribute to MetS risk among Whites and AAs since different genes were identified in AAs and Whites. We replicated previously identified MetS associated genes and found that Thioredoxin-interacting protein (TXN1P) was statistically significantly differentially expressed only in Whites. Our results may be useful in further studies of genes underlying differences in MetS among AAs and Whites.
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Affiliation(s)
- Kumaraswamy Naidu Chitrala
- Laboratory of Epidemiology and Population Sciences, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Dena G Hernandez
- Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, USA
| | - Michael A Nalls
- Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, USA.,Data Tecnica International, Glen Echo, MD, USA
| | - Nicolle A Mode
- Laboratory of Epidemiology and Population Sciences, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Alan B Zonderman
- Laboratory of Epidemiology and Population Sciences, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Ngozi Ezike
- Laboratory of Epidemiology and Population Sciences, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Michele K Evans
- Laboratory of Epidemiology and Population Sciences, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
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Machine learning and data mining frameworks for predicting drug response in cancer: An overview and a novel in silico screening process based on association rule mining. Pharmacol Ther 2019; 203:107395. [DOI: 10.1016/j.pharmthera.2019.107395] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 07/11/2019] [Indexed: 12/20/2022]
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45
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Li H, Liu Y, Gao X, Liu L, Amuti S, Wu D, Jiang F, Huang L, Wang G, Zeng J, Ma B, Yuan Q. Neuroplastin 65 modulates anxiety- and depression-like behavior likely through adult hippocampal neurogenesis and central 5-HT activity. FEBS J 2019; 286:3401-3415. [PMID: 31034748 DOI: 10.1111/febs.14865] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 03/07/2019] [Accepted: 04/25/2019] [Indexed: 01/02/2023]
Abstract
Neuroplastin 65 (Np65) is a brain-specific cell adhesion molecule that is highly expressed in the hippocampus, amygdala, and cortex, regions of the brain that are associated with memory and emotions. However, the role of Np65 in regulation of emotional behavior is still unclear. In the present study, we show that Np65 knock-out (Np65 KO) mice display enhanced anxiety-like behavior, a reduction in some aspects of depressive-like behaviors, and increased sociability and memory. Biochemical investigations revealed that Np65 KO mice show increased adult-born neurons and proliferation in the hippocampus. In addition, the level of 5-hydroxytryptamine (5-HT) in the hippocampus was reduced. The expression of tryptophan hydroxylase 2 in the brainstem and the expression of the 5-HT3A receptor were also decreased. Electrophysiological recordings confirmed an impaired maintenance of long-term potentiation in the hippocampus of Np65 KO mice. Together, our findings uncover a role for Np65 in regulating anxiety- and depressive-like behaviors and suggest that Np65 may be essential for the maintenance of emotional stability, indicating that it might be an attractive potential target for treatment of psychiatric disorders.
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Affiliation(s)
- Huanhuan Li
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yutong Liu
- Department of Radiology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Xiaoqing Gao
- Department of Anatomy and Neurobiology, Southwest Medical University, Luzhou, China
| | - Lifen Liu
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Siyiti Amuti
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Dandan Wu
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Fen Jiang
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Liang Huang
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Geying Wang
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jiujiang Zeng
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Bin Ma
- Department of Molecular and Biomedical Sciences, School of Veterinary and Life Sciences, Murdoch University, Perth, WA, Australia
| | - Qionglan Yuan
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
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Lleó A, Núñez-Llaves R, Alcolea D, Chiva C, Balateu-Paños D, Colom-Cadena M, Gomez-Giro G, Muñoz L, Querol-Vilaseca M, Pegueroles J, Rami L, Lladó A, Molinuevo JL, Tainta M, Clarimón J, Spires-Jones T, Blesa R, Fortea J, Martínez-Lage P, Sánchez-Valle R, Sabidó E, Bayés À, Belbin O. Changes in Synaptic Proteins Precede Neurodegeneration Markers in Preclinical Alzheimer's Disease Cerebrospinal Fluid. Mol Cell Proteomics 2019; 18:546-560. [PMID: 30606734 PMCID: PMC6398205 DOI: 10.1074/mcp.ra118.001290] [Citation(s) in RCA: 102] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Indexed: 01/08/2023] Open
Abstract
A biomarker of synapse loss, an early event in Alzheimer's disease (AD) pathophysiology that precedes neuronal death and symptom onset, would be a much-needed prognostic biomarker. With direct access to the brain interstitial fluid, the cerebrospinal fluid (CSF) is a potential source of synapse-derived proteins. In this study, we aimed to identify and validate novel CSF biomarkers of synapse loss in AD. Discovery: Combining shotgun proteomics of the CSF with an exhaustive search of the literature and public databases, we identified 251 synaptic proteins, from which we selected 22 for further study. Verification: Twelve proteins were discarded because of poor detection by Selected Reaction Monitoring (SRM). We confirmed the specific expression of 9 of the remaining proteins (Calsynytenin-1, GluR2, GluR4, Neurexin-2A, Neurexin-3A, Neuroligin-2, Syntaxin-1B, Thy-1, Vamp-2) at the human synapse using Array Tomography microscopy and biochemical fractionation methods. Exploration: Using SRM, we monitored these 9 synaptic proteins (20 peptides) in a cohort of CSF from cognitively normal controls and subjects in the pre-clinical and clinical AD stages (n = 80). Compared with controls, peptides from 8 proteins were elevated 1.3 to 1.6-fold (p < 0.04) in prodromal AD patients. Validation: Elevated levels of a GluR4 peptide at the prodromal stage were replicated (1.3-fold, p = 0.04) in an independent cohort (n = 60). Moreover, 7 proteins were reduced at preclinical stage 1 (0.6 to 0.8-fold, p < 0.04), a finding that was replicated (0.7 to 0.8-fold, p < 0.05) for 6 proteins in a third cohort (n = 38). In a cross-cohort meta-analysis, 6 synaptic proteins (Calsyntenin-1, GluR4, Neurexin-2A, Neurexin-3A, Syntaxin-1B and Thy-1) were reduced 0.8-fold (p < 0.05) in preclinical AD, changes that precede clinical symptoms and CSF markers of neurodegeneration. Therefore, these proteins could have clinical value for assessing disease progression, especially in preclinical stages of AD.
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Affiliation(s)
- Alberto Lleó
- From the ‡Memory Unit, Neurology Department, Hospital de la Santa Creu i Sant Pau, 08025 Barcelona, Spain;
- §Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain
| | - Raúl Núñez-Llaves
- §Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain
- ¶Biomedical Research Institute Sant Pau (IIB Sant Pau), 08025Barcelona, Spain
| | - Daniel Alcolea
- From the ‡Memory Unit, Neurology Department, Hospital de la Santa Creu i Sant Pau, 08025 Barcelona, Spain
- §Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain
| | - Cristina Chiva
- ‖Proteomics Unit, Center for Genomics Regulation, Barcelona Institute of Science and Technology, 08003 Barcelona
- **University Pompeu Fabra, 08003 Barcelona
| | | | - Martí Colom-Cadena
- §Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain
- ¶Biomedical Research Institute Sant Pau (IIB Sant Pau), 08025Barcelona, Spain
| | - Gemma Gomez-Giro
- ¶Biomedical Research Institute Sant Pau (IIB Sant Pau), 08025Barcelona, Spain
| | - Laia Muñoz
- §Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain
- ¶Biomedical Research Institute Sant Pau (IIB Sant Pau), 08025Barcelona, Spain
| | - Marta Querol-Vilaseca
- §Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain
- ¶Biomedical Research Institute Sant Pau (IIB Sant Pau), 08025Barcelona, Spain
| | - Jordi Pegueroles
- §Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain
- ¶Biomedical Research Institute Sant Pau (IIB Sant Pau), 08025Barcelona, Spain
| | - Lorena Rami
- ‡‡Alzheimer's Disease and Other Cognitive Disorders Unit, Neurology Department, Hospital Clínic-Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS), 08015 Barcelona, Spain
| | - Albert Lladó
- ‡‡Alzheimer's Disease and Other Cognitive Disorders Unit, Neurology Department, Hospital Clínic-Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS), 08015 Barcelona, Spain
| | - José L Molinuevo
- ‡‡Alzheimer's Disease and Other Cognitive Disorders Unit, Neurology Department, Hospital Clínic-Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS), 08015 Barcelona, Spain
| | - Mikel Tainta
- §§Department of Neurology, Center for Research and Advanced Therapies, CITA-Alzheimer Foundation, 20009 San Sebastian, Spain
- ¶¶Servicio de Neurologia, Organización Sanitaria Integrada Goierri-Alto Urola, Osakidetza, Zumárraga, España
| | - Jordi Clarimón
- §Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain
- ¶Biomedical Research Institute Sant Pau (IIB Sant Pau), 08025Barcelona, Spain
| | - Tara Spires-Jones
- ‖‖Centre for Discovery Brain Sciences and UK Dementia Research Institute, University of Edinburgh EH8 9JZ, UK
| | - Rafael Blesa
- From the ‡Memory Unit, Neurology Department, Hospital de la Santa Creu i Sant Pau, 08025 Barcelona, Spain
- §Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain
| | - Juan Fortea
- From the ‡Memory Unit, Neurology Department, Hospital de la Santa Creu i Sant Pau, 08025 Barcelona, Spain
- §Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain
| | - Pablo Martínez-Lage
- §§Department of Neurology, Center for Research and Advanced Therapies, CITA-Alzheimer Foundation, 20009 San Sebastian, Spain
| | - Raquel Sánchez-Valle
- ‡‡Alzheimer's Disease and Other Cognitive Disorders Unit, Neurology Department, Hospital Clínic-Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS), 08015 Barcelona, Spain
| | - Eduard Sabidó
- ‖Proteomics Unit, Center for Genomics Regulation, Barcelona Institute of Science and Technology, 08003 Barcelona
- **University Pompeu Fabra, 08003 Barcelona
| | - Àlex Bayés
- ***Molecular Physiology of the Synapse Laboratory, Biomedical Research Institute Sant Pau (IIB Sant Pau), 08025, Barcelona, Spain
- ‡‡‡Universitat Autònoma de Barcelona, 08193 Bellaterra (Cerdanyola del Vallès), Spain
| | - Olivia Belbin
- §Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain;
- ¶Biomedical Research Institute Sant Pau (IIB Sant Pau), 08025Barcelona, Spain
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47
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Ilic K, Mlinac-Jerkovic K, Jovanov-Milosevic N, Simic G, Habek N, Bogdanovic N, Kalanj-Bognar S. Hippocampal expression of cell-adhesion glycoprotein neuroplastin is altered in Alzheimer's disease. J Cell Mol Med 2018; 23:1602-1607. [PMID: 30488668 PMCID: PMC6349345 DOI: 10.1111/jcmm.13998] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 10/13/2018] [Indexed: 11/26/2022] Open
Abstract
Cell‐adhesion glycoprotein neuroplastin (Np) is involved in the regulation of synaptic plasticity and balancing hippocampal excitatory/inhibitory inputs which aids in the process of associative memory formation and learning. Our recent findings show that neuroplastin expression in the adult human hippocampus is specifically associated with major hippocampal excitatory pathways and is related to neuronal calcium regulation. Here, we investigated the hippocampal expression of brain‐specific neuroplastin isoform (Np65), its relationship with amyloid and tau pathology in Alzheimer's disease (AD), and potential involvement of neuroplastin in tissue response during the disease progression. Np65 expression and localization was analysed in six human hippocampi with confirmed AD neuropathology, and six age‐/gender‐matched control hippocampi by imunohistochemistry. In AD cases with shorter disease duration, the Np65 immunoreactivity was significantly increased in the dentate gyrus (DG), Cornu Ammonis 2/3 (CA2/3), and subiculum, with the highest level of Np expression being located on the dendrites of granule cells and subicular pyramidal neurons. Changes in the expression of neuroplastin in AD hippocampal areas seem to be related to the progression of disease. Our study suggests that cell‐adhesion protein neuroplastin is involved in tissue reorganization and is a potential molecular marker of plasticity response in the early neurodegeneration process of AD.
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Affiliation(s)
- Katarina Ilic
- School of Medicine, Croatian Institute for Brain Research, University of Zagreb, Zagreb, Croatia
| | - Kristina Mlinac-Jerkovic
- School of Medicine, Croatian Institute for Brain Research, University of Zagreb, Zagreb, Croatia
| | - Natasa Jovanov-Milosevic
- School of Medicine, Croatian Institute for Brain Research, University of Zagreb, Zagreb, Croatia
| | - Goran Simic
- School of Medicine, Croatian Institute for Brain Research, University of Zagreb, Zagreb, Croatia
| | - Nikola Habek
- School of Medicine, Croatian Institute for Brain Research, University of Zagreb, Zagreb, Croatia
| | - Nenad Bogdanovic
- Division of Clinical Geriatrics, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden
| | - Svjetlana Kalanj-Bognar
- School of Medicine, Croatian Institute for Brain Research, University of Zagreb, Zagreb, Croatia
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48
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Tso CH, Lu MW. Transcriptome profiling analysis of grouper during nervous necrosis virus persistent infection. FISH & SHELLFISH IMMUNOLOGY 2018; 76:224-232. [PMID: 29510256 DOI: 10.1016/j.fsi.2018.03.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 02/28/2018] [Accepted: 03/02/2018] [Indexed: 06/08/2023]
Abstract
Nervous necrosis virus (NNV) infection has been considered a serious disease in farmed grouper. Particularly, the persistent infection model conducts the grouper into a carrier state that continues to spread the virus through spawning. This particular model makes disease control more difficult in the aquaculture industry. In the present study, we used RNA-Seq, a high-throughput method based on next-generation sequencing, to profile the expression of genes during the period of NNV persistent infection. We evaluated the transcriptomic changes in the brain tissue of grouper. The inactivated-NNV vaccine was used as a comparison group. Based on the differentially expressed genes, highly immune cell active signaling and surface receptor expression were triggered during persistent infection. The interferon-induced response was also highly expressed in the infected brain tissue. However, critical negative regulatory factors of T-cells, such as PD-L1 and LAG3, were up-regulated. The present transcriptome study revealed a comprehensive view of the state of NNV persistent infection and provided insights into the state of impaired NNV clearance in the grouper.
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Affiliation(s)
- Chun-Hsi Tso
- Department of Aquaculture, National Taiwan Ocean University, Taiwan
| | - Ming-Wei Lu
- Department of Aquaculture, National Taiwan Ocean University, Taiwan; Center of Excellence for the Oceans, National Taiwan Ocean University, Taiwan.
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49
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Schmidt N, Kollewe A, Constantin CE, Henrich S, Ritzau-Jost A, Bildl W, Saalbach A, Hallermann S, Kulik A, Fakler B, Schulte U. Neuroplastin and Basigin Are Essential Auxiliary Subunits of Plasma Membrane Ca2+-ATPases and Key Regulators of Ca2+ Clearance. Neuron 2017; 96:827-838.e9. [DOI: 10.1016/j.neuron.2017.09.038] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2017] [Revised: 07/31/2017] [Accepted: 09/22/2017] [Indexed: 12/21/2022]
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50
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Abbey SR, Eckhard U, Solis N, Marino G, Matthew I, Overall CM. The Human Odontoblast Cell Layer and Dental Pulp Proteomes and N-Terminomes. J Dent Res 2017; 97:338-346. [PMID: 29035686 DOI: 10.1177/0022034517736054] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The proteome and N-terminome of the human odontoblast cell layer were identified for the first time by shotgun proteomic and terminal amine isotopic labeling of substrates (TAILS) N-terminomic analyses, respectively, and compared with that of human dental pulp stroma from 26 third molar teeth. After reverse-phase liquid chromatography-tandem mass spectrometry, >170,000 spectra from the shotgun and TAILS analyses were matched by 4 search engines to 4,888 and 12,063 peptides in the odontoblast cell layer and pulp stroma, respectively. Within these peptide groups, 1,543 and 5,841 protein N-termini, as well as 895 and 2,423 unique proteins, were identified with a false discovery rate of ≤1%. Thus, the human dental pulp proteome was expanded by 974 proteins not previously identified among the 4,123 proteins in our 2015 dental pulp study. Further, 222 proteins of the odontoblast cell layer were not found in the pulp stroma, suggesting many of these proteins are synthesized only by odontoblasts. When comparing the proteomes of older and younger donors, differences were more apparent in the odontoblast cell layer than in the dental pulp stroma. In the odontoblast cell layer proteome, we found proteomic evidence for dentin sialophosphoprotein, which is cleaved into dentin sialoprotein and dentin phosphoprotein. By exploring the proteome of the odontoblast cell layer and expanding the known dental pulp proteome, we found distinct proteome differences compared with each other and with dentin. Moreover, between 61% and 66% of proteins also occurred as proteoforms commencing with a neo-N-terminus not annotated in UniProt. Hence, TAILS increased proteome coverage and revealed considerable proteolytic processing, by identifying stable proteoforms in these dynamic dental tissues. All mass spectrometry raw data have been deposited to ProteomeXchange with the identifier <PXD006557>, with the accompanying metadata at Mendeley Data ( https://data.mendeley.com/datasets/b57zfh6wmy/1 ).
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Affiliation(s)
- S R Abbey
- 1 Department of Oral Biological and Medical Sciences, Faculty of Dentistry, University of British Columbia, Vancouver, BC, Canada
| | - U Eckhard
- 1 Department of Oral Biological and Medical Sciences, Faculty of Dentistry, University of British Columbia, Vancouver, BC, Canada.,2 Centre for Blood Research, University of British Columbia, Vancouver, BC, Canada
| | - N Solis
- 1 Department of Oral Biological and Medical Sciences, Faculty of Dentistry, University of British Columbia, Vancouver, BC, Canada.,2 Centre for Blood Research, University of British Columbia, Vancouver, BC, Canada
| | - G Marino
- 1 Department of Oral Biological and Medical Sciences, Faculty of Dentistry, University of British Columbia, Vancouver, BC, Canada.,2 Centre for Blood Research, University of British Columbia, Vancouver, BC, Canada
| | - I Matthew
- 1 Department of Oral Biological and Medical Sciences, Faculty of Dentistry, University of British Columbia, Vancouver, BC, Canada
| | - C M Overall
- 1 Department of Oral Biological and Medical Sciences, Faculty of Dentistry, University of British Columbia, Vancouver, BC, Canada.,2 Centre for Blood Research, University of British Columbia, Vancouver, BC, Canada.,3 Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, BC, Canada
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