1
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Danelon V, Garret-Thomson SC, Almo SC, Lee FS, Hempstead BL. Immune activation of the p75 neurotrophin receptor: implications in neuroinflammation. Front Mol Neurosci 2023; 16:1305574. [PMID: 38106879 PMCID: PMC10722190 DOI: 10.3389/fnmol.2023.1305574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 11/10/2023] [Indexed: 12/19/2023] Open
Abstract
Despite structural similarity with other tumor necrosis factor receptor superfamily (TNFRSF) members, the p75 neurotrophin receptor (p75NTR, TNFR16) mediates pleiotropic biological functions not shared with other TNFRs. The high level of p75NTR expression in the nervous system instead of immune cells, its utilization of co-receptors, and its interaction with soluble dimeric, rather than soluble or cell-tethered trimeric ligands are all characteristics which distinguish it from most other TNFRs. Here, we compare these attributes to other members of the TNFR superfamily. In addition, we describe the recent evolutionary adaptation in B7-1 (CD80), an immunoglobulin (Ig) superfamily member, which allows engagement to neuronally-expressed p75NTR. B7-1-mediated binding to p75NTR occurs in humans and other primates, but not lower mammals due to specific sequence changes that evolved recently in primate B7-1. This discovery highlights an additional mechanism by which p75NTR can respond to inflammatory cues and trigger synaptic elimination in the brain through engagement of B7-1, which was considered to be immune-restricted. These observations suggest p75NTR does share commonality with other immune co-modulatory TNFR family members, by responding to immunoregulatory cues. The evolution of primate B7-1 to bind and elicit p75NTR-mediated effects on neuronal morphology and function are discussed in relationship to immune-driven modulation of synaptic actions during injury or inflammation.
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Affiliation(s)
- Victor Danelon
- Department of Medicine, Weill Cornell Graduate School of Medical Sciences, Weill Cornell Medicine, New York, NY, United States
| | | | - Steven C. Almo
- Department of Biochemistry, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Francis S. Lee
- Department of Psychiatry, Weill Cornell Medicine, New York, NY, United States
| | - Barbara L. Hempstead
- Department of Medicine, Weill Cornell Graduate School of Medical Sciences, Weill Cornell Medicine, New York, NY, United States
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2
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Overby M, Serrano-Rodriguez A, Dadras S, Christiansen AK, Ozcelik G, Lichtenthaler SF, Weick JP, Müller HK. Neuron-specific gene NSG1 binds to and positively regulates sortilin ectodomain shedding via a metalloproteinase-dependent mechanism. J Biol Chem 2023; 299:105446. [PMID: 37949230 PMCID: PMC10704435 DOI: 10.1016/j.jbc.2023.105446] [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: 05/30/2023] [Revised: 10/15/2023] [Accepted: 11/03/2023] [Indexed: 11/12/2023] Open
Abstract
Increasing evidence suggests that aberrant regulation of sortilin ectodomain shedding can contribute to amyloid-β pathology and frontotemporal dementia, although the mechanism by which this occurs has not been elucidated. Here, we probed for novel binding partners of sortilin using multiple and complementary approaches and identified two proteins of the neuron-specific gene (NSG) family, NSG1 and NSG2, that physically interact and colocalize with sortilin. We show both NSG1 and NSG2 induce subcellular redistribution of sortilin to NSG1- and NSG2-enriched compartments. However, using cell surface biotinylation, we found only NSG1 reduced sortilin cell surface expression, which caused significant reductions in uptake of progranulin, a molecular determinant for frontotemporal dementia. In contrast, we demonstrate NSG2 has no effect on sortilin cell surface abundance or progranulin uptake, suggesting specificity for NSG1 in the regulation of sortilin cell surface expression. Using metalloproteinase inhibitors and A disintegrin and metalloproteinase 10 KO cells, we further show that NSG1-dependent reduction of cell surface sortilin occurred via proteolytic processing by A disintegrin and metalloproteinase 10 with a concomitant increase in shedding of sortilin ectodomain to the extracellular space. This represents a novel regulatory mechanism for sortilin ectodomain shedding that is regulated in a neuron-specific manner. Furthermore, this finding has implications for the development of strategies for brain-specific regulation of sortilin and possibly sortilin-driven pathologies.
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Affiliation(s)
- Malene Overby
- Translational Neuropsychiatry Unit, Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Antonio Serrano-Rodriguez
- Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, New Mexico, USA
| | - Somayeh Dadras
- Department of Molecular Genetics and Microbiology, University of New Mexico School of Medicine, Albuquerque, New Mexico, USA
| | - Ann Kathrine Christiansen
- Translational Neuropsychiatry Unit, Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Gözde Ozcelik
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany; Neuroproteomics, School of Medicine, Klinikum Rechts der lsar, Technical University of Munich, Munich, Germany
| | - Stefan F Lichtenthaler
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany; Neuroproteomics, School of Medicine, Klinikum Rechts der lsar, Technical University of Munich, Munich, Germany; Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Jason Porter Weick
- Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, New Mexico, USA
| | - Heidi Kaastrup Müller
- Translational Neuropsychiatry Unit, Department of Clinical Medicine, Aarhus University, Aarhus, Denmark.
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3
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Skeldal S, Voss LF, Lende J, Pedersen SB, Mølgaard S, Kaas M, Demange P, Bentsen AH, Fuglsang M, Sander MR, Buttenschøn H, Gustafsen C, Madsen P, Glerup S. Alternative splicing regulates adaptor protein binding, trafficking, and activity of the Vps10p domain receptor SorCS2 in neuronal development. J Biol Chem 2023; 299:105102. [PMID: 37507021 PMCID: PMC10463258 DOI: 10.1016/j.jbc.2023.105102] [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: 04/01/2023] [Revised: 07/12/2023] [Accepted: 07/16/2023] [Indexed: 07/30/2023] Open
Abstract
The Vps10p domain receptor SorCS2 is crucial for the development and function of the nervous system and essential for brain-derived neurotrophic factor (BDNF)-induced changes in neuronal morphology and plasticity. SorCS2 regulates the subcellular trafficking of the BDNF signaling receptor TrkB as well as selected neurotransmitter receptors in a manner that is dependent on the SorCS2 intracellular domain (ICD). However, the cellular machinery and adaptor protein (AP) interactions that regulate receptor trafficking via the SorCS2 ICD are unknown. We here identify four splice variants of human SorCS2 differing in the insertion of an acidic cluster motif and/or a serine residue within the ICD. We show that each variant undergoes posttranslational proteolytic processing into a one- or two-chain receptor, giving rise to eight protein isoforms, the expression of which differs between neuronal and nonneuronal tissues and is affected by cellular stressors. We found that the only variants without the serine were able to rescue BDNF-induced branching of SorCS2 knockout hippocampal neurons, while variants without the acidic cluster showed increased interactions with clathrin-associated APs AP-1, AP-2, and AP-3. Using yeast two-hybrid screens, we further discovered that all variants bound dynein light chain Tctex-type 3; however, only variants with an acidic cluster motif bound kinesin light chain 1. Accordingly, splice variants showed markedly different trafficking properties and localized to different subcellular compartments. Taken together, our findings demonstrate the existence of eight functional SorCS2 isoforms with differential capacity for interactions with cytosolic ligands dynein light chain Tctex-type 3 and kinesin light chain 1, which potentially allows cell-type specific SorCS2 trafficking and BDNF signaling.
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Affiliation(s)
- Sune Skeldal
- Department of Biomedicine, Aarhus University, Aarhus C, Denmark
| | | | - Jonas Lende
- Department of Biomedicine, Aarhus University, Aarhus C, Denmark
| | | | - Simon Mølgaard
- Department of Biomedicine, Aarhus University, Aarhus C, Denmark
| | - Mathias Kaas
- Department of Biomedicine, Aarhus University, Aarhus C, Denmark
| | - Perline Demange
- Department of Biomedicine, Aarhus University, Aarhus C, Denmark
| | - Andreas Høiberg Bentsen
- Department of Surgical Gastroenterology and Transplantation, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Marie Fuglsang
- Department of Biomedicine, Aarhus University, Aarhus C, Denmark
| | | | - Henriette Buttenschøn
- NIDO | Centre for Research and Education, Gødstrup Hospital, Herning, Denmark; Department of Clinical Medicine, Aarhus University, Aarhus N, Denmark
| | | | - Peder Madsen
- Department of Biomedicine, Aarhus University, Aarhus C, Denmark.
| | - Simon Glerup
- Department of Biomedicine, Aarhus University, Aarhus C, Denmark.
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4
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van den Oord EJCG, Xie LY, Zhao M, Campbell TL, Turecki G, Kähler AK, Dean B, Mors O, Hultman CM, Staunstrup NH, Aberg KA. Genes implicated by a methylome-wide schizophrenia study in neonatal blood show differential expression in adult brain samples. Mol Psychiatry 2023; 28:2088-2094. [PMID: 37106120 DOI: 10.1038/s41380-023-02080-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 04/13/2023] [Accepted: 04/17/2023] [Indexed: 04/29/2023]
Abstract
Schizophrenia is a disabling disorder involving genetic predisposition in combination with environmental influences that likely act via dynamic alterations of the epigenome and the transcriptome but its detailed pathophysiology is largely unknown. We performed cell-type specific methylome-wide association study of neonatal blood (N = 333) from individuals who later in life developed schizophrenia and controls. Suggestively significant associations (P < 1.0 × 10-6) were detected in all cell-types and in whole blood with methylome-wide significant associations in monocytes (P = 2.85 × 10-9-4.87 × 10-9), natural killer cells (P = 1.72 × 10-9-7.82 × 10-9) and B cells (P = 3.8 × 10-9). Validation of methylation findings in post-mortem brains (N = 596) from independent schizophrenia cases and controls showed significant enrichment of transcriptional differences (enrichment ratio = 1.98-3.23, P = 2.3 × 10-3-1.0 × 10-5), with specific highly significant differential expression for, for example, BDNF (t = -6.11, P = 1.90 × 10-9). In addition, expression difference in brain significantly predicted schizophrenia (multiple correlation = 0.15-0.22, P = 3.6 × 10-4-4.5 × 10-8). In summary, using a unique design combining pre-disease onset (neonatal) blood methylomic data and post-disease onset (post-mortem) brain transcriptional data, we have identified genes of likely functional relevance that are associated with schizophrenia susceptibility, rather than confounding disease associated artifacts. The identified loci may be of clinical value as a methylation-based biomarker for early detection of increased schizophrenia susceptibility.
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Affiliation(s)
- Edwin J C G van den Oord
- Center for Biomarker Research and Precision Medicine, Virginia Commonwealth University, Richmond, VA, USA
| | - Lin Y Xie
- Center for Biomarker Research and Precision Medicine, Virginia Commonwealth University, Richmond, VA, USA
| | - Min Zhao
- Center for Biomarker Research and Precision Medicine, Virginia Commonwealth University, Richmond, VA, USA
| | - Thomas L Campbell
- Center for Biomarker Research and Precision Medicine, Virginia Commonwealth University, Richmond, VA, USA
| | - Gustavo Turecki
- Douglas Mental Health University Institute and McGill University, Montréal, Québec, Canada
| | - Anna K Kähler
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Brian Dean
- Florey Institute of Neuroscience and Mental Health, Parkville, Victoria, Australia
| | - Ole Mors
- iPSYCH, The Lundbeck Foundation Initiative for Integrative Psychiatric Research, Aarhus, Denmark
- Psychosis Research Unit, Aarhus University Hospital - Psychiatry, Risskov, Denmark
- Center for Genomics and Personalized Medicine, University of Aarhus, Aarhus, Denmark
| | - Christina M Hultman
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Nicklas H Staunstrup
- iPSYCH, The Lundbeck Foundation Initiative for Integrative Psychiatric Research, Aarhus, Denmark
- Center for Genomics and Personalized Medicine, University of Aarhus, Aarhus, Denmark
- Department of Biomedicine, University of Aarhus, Aarhus C, Denmark
| | - Karolina A Aberg
- Center for Biomarker Research and Precision Medicine, Virginia Commonwealth University, Richmond, VA, USA.
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5
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Kalinichenko SG, Pushchin II, Matveeva NY. Neurotoxic and cytoprotective mechanisms in the ischemic neocortex. J Chem Neuroanat 2023; 128:102230. [PMID: 36603664 DOI: 10.1016/j.jchemneu.2022.102230] [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: 09/19/2022] [Revised: 12/30/2022] [Accepted: 12/30/2022] [Indexed: 01/03/2023]
Abstract
Neuronal damage in ischemic stroke occurs due to permanent imbalance between the metabolic needs of the brain and the ability of the blood-vascular system to maintain glucose delivery and adequate gas exchange. Oxidative stress and excitotoxicity trigger complex processes of neuroinflammation, necrosis, and apoptosis of both neurons and glial cells. This review summarizes data on the structural and chemical changes in the neocortex and main cytoprotective effects induced by focal ischemic stroke. We focus on the expression of neurotrophins (NT) and molecular and cellular changes in neurovascular units in ischemic brain. We also discuss how these factors affect the apoptosis of cortical cells. Ischemic damage involves close interaction of a wide range of signaling molecules, each acting as an efficient marker of cell state in both the ischemic core and penumbra. NTs play the main regulatory role in brain tissue recovery after ischemic injury. Heterogeneous distribution of the BDNF, NT-3, and GDNF immunoreactivity is concordant with the selective response of different types of cortical neurons and glia to ischemic injury and allows mapping the position of viable neurons. Astrocytes are the central link in neurovascular coupling in ischemic brain by providing other cells with a wide range of vasotropic factors. The NT expression coincides with the distribution of reactive astrocytes, marking the boundaries of the penumbra. The development of ischemic stroke is accompanied by a dramatic change in the distribution of GDNF reactivity. In early ischemic period, it is mainly observed in cortical neurons, while in late one, the bulk of GDNF-positive cells are various types of glia, in particular, astrocytes. The proportion of GDNF-positive astrocytes increases gradually throughout the ischemic period. Some factors that exert cytoprotective effects in early ischemic period may display neurotoxic and pro-apoptotic effects later on. The number of apoptotic cells in the ischemic brain tissue correlates with the BDNF levels, corroborating its protective effects. Cytoprotection and neuroplasticity are two lines of brain protection and recovery after ischemic stroke. NTs can be considered an important link in these processes. To develop efficient pharmacological therapy for ischemic brain injury, we have to deepen our understanding of neurochemical adaptation of brain tissue to acute stroke.
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Affiliation(s)
- Sergei G Kalinichenko
- Department of Histology, Cytology, and Embryology, Pacific State Medical University, Vladivostok 690950, Russia
| | - Igor I Pushchin
- Laboratory of Physiology, A.V. Zhirmusky National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, Vladivostok 690041, Russia.
| | - Natalya Yu Matveeva
- Department of Histology, Cytology, and Embryology, Pacific State Medical University, Vladivostok 690950, Russia
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6
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Aguilera AC, Leiva N, Alvarez PA, Pulcini G, Pereyra LL, Morales CR, Sosa MÁ, Carvelli L. Sortilin knock-down alters the expression and distribution of cathepsin D and prosaposin and up-regulates the cation-dependent mannose-6-phosphate receptor in rat epididymal cells. Sci Rep 2023; 13:3461. [PMID: 36859404 PMCID: PMC9977780 DOI: 10.1038/s41598-023-29157-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 01/31/2023] [Indexed: 03/03/2023] Open
Abstract
The selective transport to lysosomes can be mediated by either mannose-6-phosphate receptors (CD-MPR and CI-MPR) or sortilin. In mammalian epididymis, some lysosomal proteins are secreted into the lumen through unknown mechanisms. To investigate the underlying mechanisms of lysosomal protein transport in epididymal cells we studied the expression and distribution of cathepsin D (CatD) and prosaposin (PSAP) in a sortilin knocked down RCE-1 epididymal cell line (RCE-1 KD) in comparison with non-transfected RCE-1 cells. In RCE-1 cells, CatD was found in the perinuclear zone and co-localize with sortilin, whereas in RCE-1 KD cells, the expression, distribution and processing of the enzyme were altered. In turn, PSAP accumulated intracellularly upon sortilin knock-down and redistributed from LAMP-1-positive compartment to a perinuclear location, remaining co-localized with CatD. Interestingly, the sortilin knock-down induced CD-MPR overexpression and a redistribution of the receptor from the perinuclear zone to a dispersed cytoplasmic location, accompanied by an increased co-localization with CatD. The increase in CD-MPR could result from a compensatory response for the proper delivery of CatD to lysosomes in epididymal cells. The intracellular pathway taken by lysosomal proteins could be an approach for addressing further studies to understand the mechanism of exocytosis and therefore the role of these proteins in the epididymis.
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Affiliation(s)
- Andrea Carolina Aguilera
- CONICET, Facultad de Ciencias Médicas, Universidad Nacional de Cuyo, M5500, Mendoza, Argentina.,Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, M5500, Mendoza, Argentina
| | - Natalia Leiva
- CONICET, Facultad de Ciencias Médicas, Universidad Nacional de Cuyo, M5500, Mendoza, Argentina.,Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, M5500, Mendoza, Argentina
| | - Pablo Ariel Alvarez
- Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, M5500, Mendoza, Argentina
| | - Georgina Pulcini
- IHEM-CONICET, Facultad de Ciencias Médicas, Universidad Nacional de Cuyo, M5500, Mendoza, Argentina
| | - Laura Lucía Pereyra
- IHEM-CONICET, Facultad de Ciencias Médicas, Universidad Nacional de Cuyo, M5500, Mendoza, Argentina
| | | | - Miguel Ángel Sosa
- Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, M5500, Mendoza, Argentina.,IHEM-CONICET, Facultad de Ciencias Médicas, Universidad Nacional de Cuyo, M5500, Mendoza, Argentina
| | - Lorena Carvelli
- Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, M5500, Mendoza, Argentina. .,IHEM-CONICET, Facultad de Ciencias Médicas, Universidad Nacional de Cuyo, M5500, Mendoza, Argentina.
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7
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Lafferty MJ, Aygün N, Patel NK, Krupa O, Liang D, Wolter JM, Geschwind DH, de la Torre-Ubieta L, Stein JL. MicroRNA-eQTLs in the developing human neocortex link miR-4707-3p expression to brain size. eLife 2023; 12:e79488. [PMID: 36629315 PMCID: PMC9859047 DOI: 10.7554/elife.79488] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 01/10/2023] [Indexed: 01/12/2023] Open
Abstract
Expression quantitative trait loci (eQTL) data have proven important for linking non-coding loci to protein-coding genes. But eQTL studies rarely measure microRNAs (miRNAs), small non-coding RNAs known to play a role in human brain development and neurogenesis. Here, we performed small-RNA sequencing across 212 mid-gestation human neocortical tissue samples, measured 907 expressed miRNAs, discovering 111 of which were novel, and identified 85 local-miRNA-eQTLs. Colocalization of miRNA-eQTLs with GWAS summary statistics yielded one robust colocalization of miR-4707-3p expression with educational attainment and brain size phenotypes, where the miRNA expression increasing allele was associated with decreased brain size. Exogenous expression of miR-4707-3p in primary human neural progenitor cells decreased expression of predicted targets and increased cell proliferation, indicating miR-4707-3p modulates progenitor gene regulation and cell fate decisions. Integrating miRNA-eQTLs with existing GWAS yielded evidence of a miRNA that may influence human brain size and function via modulation of neocortical brain development.
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Affiliation(s)
- Michael J Lafferty
- Department of Genetics, University of North Carolina at Chapel HillChapel HillUnited States
- UNC Neuroscience Center, University of North Carolina at Chapel HillChapel HillUnited States
| | - Nil Aygün
- Department of Genetics, University of North Carolina at Chapel HillChapel HillUnited States
- UNC Neuroscience Center, University of North Carolina at Chapel HillChapel HillUnited States
| | - Niyanta K Patel
- Department of Genetics, University of North Carolina at Chapel HillChapel HillUnited States
- UNC Neuroscience Center, University of North Carolina at Chapel HillChapel HillUnited States
| | - Oleh Krupa
- Department of Genetics, University of North Carolina at Chapel HillChapel HillUnited States
- UNC Neuroscience Center, University of North Carolina at Chapel HillChapel HillUnited States
| | - Dan Liang
- Department of Genetics, University of North Carolina at Chapel HillChapel HillUnited States
- UNC Neuroscience Center, University of North Carolina at Chapel HillChapel HillUnited States
| | - Justin M Wolter
- Department of Genetics, University of North Carolina at Chapel HillChapel HillUnited States
- UNC Neuroscience Center, University of North Carolina at Chapel HillChapel HillUnited States
- Department of Cell Biology and Physiology, The University of North Carolina at Chapel HillChapel HillUnited States
- Carolina Institute for Developmental Disabilities, The University of North Carolina at Chapel HillChapel HillUnited States
| | - Daniel H Geschwind
- Neurogenetics Program, Department of Neurology, David Geffen School of Medicine, University of California, Los AngelesLos AngelesUnited States
- Center for Autism Research and Treatment, Semel Institute, David Geffen School of Medicine, University of California, Los AngelesLos AngelesUnited States
- Department of Human Genetics, David Geffen School of Medicine, University of California, Los AngelesLos AngelesUnited States
- Department of Psychiatry and Biobehavioral Sciences, Semel Institute, David Geffen School of Medicine, University of California, Los AngelesLos AngelesUnited States
| | - Luis de la Torre-Ubieta
- Department of Psychiatry and Biobehavioral Sciences, Semel Institute, David Geffen School of Medicine, University of California, Los AngelesLos AngelesUnited States
| | - Jason L Stein
- Department of Genetics, University of North Carolina at Chapel HillChapel HillUnited States
- UNC Neuroscience Center, University of North Carolina at Chapel HillChapel HillUnited States
- Carolina Institute for Developmental Disabilities, The University of North Carolina at Chapel HillChapel HillUnited States
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8
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Gospodinova KO, Olsen D, Kaas M, Anderson SM, Phillips J, Walker RM, Bermingham ML, Payne AL, Giannopoulos P, Pandya D, Spires-Jones TL, Abbott CM, Porteous DJ, Glerup S, Evans KL. Loss of SORCS2 is Associated with Neuronal DNA Double-Strand Breaks. Cell Mol Neurobiol 2023; 43:237-249. [PMID: 34741697 PMCID: PMC9813074 DOI: 10.1007/s10571-021-01163-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 10/29/2021] [Indexed: 01/09/2023]
Abstract
SORCS2 is one of five proteins that constitute the Vps10p-domain receptor family. Members of this family play important roles in cellular processes linked to neuronal survival, differentiation and function. Genetic and functional studies implicate SORCS2 in cognitive function, as well as in neurodegenerative and psychiatric disorders. DNA damage and DNA repair deficits are linked to ageing and neurodegeneration, and transient neuronal DNA double-strand breaks (DSBs) also occur as a result of neuronal activity. Here, we report a novel role for SORCS2 in DSB formation. We show that SorCS2 loss is associated with elevated DSB levels in the mouse dentate gyrus and that knocking out SORCS2 in a human neuronal cell line increased Topoisomerase IIβ-dependent DSB formation and reduced neuronal viability. Neuronal stimulation had no impact on levels of DNA breaks in vitro, suggesting that the observed differences may not be the result of aberrant neuronal activity in these cells. Our findings are consistent with studies linking the VPS10 receptors and DNA damage to neurodegenerative conditions.
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Affiliation(s)
- Katerina O. Gospodinova
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, EH4 2XU UK
| | - Ditte Olsen
- Department of Biomedicine, Aarhus University, 8000 Aarhus, Denmark
| | - Mathias Kaas
- Department of Biomedicine, Aarhus University, 8000 Aarhus, Denmark
| | - Susan M. Anderson
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, EH4 2XU UK
| | - Jonathan Phillips
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, EH4 2XU UK
| | - Rosie M. Walker
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, EH4 2XU UK ,Present Address: University of Edinburgh, Chancellor’s Building, 49, Edinburgh, EH16 4SB UK
| | - Mairead L. Bermingham
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, EH4 2XU UK
| | - Abigail L. Payne
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, EH4 2XU UK
| | - Panagiotis Giannopoulos
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, EH4 2XU UK
| | - Divya Pandya
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, EH4 2XU UK
| | - Tara L. Spires-Jones
- Centre for Discovery Brain Sciences, UK Dementia Research Institute, University of Edinburgh, Edinburgh, EH8 9XD UK
| | - Catherine M. Abbott
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, EH4 2XU UK
| | - David J. Porteous
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, EH4 2XU UK
| | - Simon Glerup
- Department of Biomedicine, Aarhus University, 8000 Aarhus, Denmark
| | - Kathryn L. Evans
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, EH4 2XU UK
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9
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Mitok KA, Keller MP, Attie AD. Sorting through the extensive and confusing roles of sortilin in metabolic disease. J Lipid Res 2022; 63:100243. [PMID: 35724703 PMCID: PMC9356209 DOI: 10.1016/j.jlr.2022.100243] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 06/10/2022] [Accepted: 06/13/2022] [Indexed: 01/06/2023] Open
Abstract
Sortilin is a post-Golgi trafficking receptor homologous to the yeast vacuolar protein sorting receptor 10 (VPS10). The VPS10 motif on sortilin is a 10-bladed β-propeller structure capable of binding more than 50 proteins, covering a wide range of biological functions including lipid and lipoprotein metabolism, neuronal growth and death, inflammation, and lysosomal degradation. Sortilin has a complex cellular trafficking itinerary, where it functions as a receptor in the trans-Golgi network, endosomes, secretory vesicles, multivesicular bodies, and at the cell surface. In addition, sortilin is associated with hypercholesterolemia, Alzheimer's disease, prion diseases, Parkinson's disease, and inflammation syndromes. The 1p13.3 locus containing SORT1, the gene encoding sortilin, carries the strongest association with LDL-C of all loci in human genome-wide association studies. However, the mechanism by which sortilin influences LDL-C is unclear. Here, we review the role sortilin plays in cardiovascular and metabolic diseases and describe in detail the large and often contradictory literature on the role of sortilin in the regulation of LDL-C levels.
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Affiliation(s)
- Kelly A Mitok
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, USA
| | - Mark P Keller
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, USA
| | - Alan D Attie
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, USA.
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10
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Eggert S, Kins S, Endres K, Brigadski T. Brothers in arms: proBDNF/BDNF and sAPPα/Aβ-signaling and their common interplay with ADAM10, TrkB, p75NTR, sortilin, and sorLA in the progression of Alzheimer's disease. Biol Chem 2022; 403:43-71. [PMID: 34619027 DOI: 10.1515/hsz-2021-0330] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 09/16/2021] [Indexed: 12/22/2022]
Abstract
Brain-derived neurotrophic factor (BDNF) is an important modulator for a variety of functions in the central nervous system (CNS). A wealth of evidence, such as reduced mRNA and protein level in the brain, cerebrospinal fluid (CSF), and blood samples of Alzheimer's disease (AD) patients implicates a crucial role of BDNF in the progression of this disease. Especially, processing and subcellular localization of BDNF and its receptors TrkB and p75 are critical determinants for survival and death in neuronal cells. Similarly, the amyloid precursor protein (APP), a key player in Alzheimer's disease, and its cleavage fragments sAPPα and Aβ are known for their respective roles in neuroprotection and neuronal death. Common features of APP- and BDNF-signaling indicate a causal relationship in their mode of action. However, the interconnections of APP- and BDNF-signaling are not well understood. Therefore, we here discuss dimerization properties, localization, processing by α- and γ-secretase, relevance of the common interaction partners TrkB, p75, sorLA, and sortilin as well as shared signaling pathways of BDNF and sAPPα.
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Affiliation(s)
- Simone Eggert
- Department of Human Biology and Human Genetics, University of Kaiserslautern, Erwin-Schrödinger-Str. 13, D-67663 Kaiserslautern, Germany
| | - Stefan Kins
- Department of Human Biology and Human Genetics, University of Kaiserslautern, Erwin-Schrödinger-Str. 13, D-67663 Kaiserslautern, Germany
| | - Kristina Endres
- Department of Psychiatry and Psychotherapy, University Medical Center, Johannes Gutenberg-University Mainz, D-55131 Mainz, Germany
| | - Tanja Brigadski
- Department of Informatics and Microsystem Technology, University of Applied Sciences Kaiserslautern, D-66482 Zweibrücken, Germany
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11
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OUP accepted manuscript. Brain 2022; 145:2250-2275. [DOI: 10.1093/brain/awac096] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 01/21/2022] [Accepted: 01/23/2022] [Indexed: 11/13/2022] Open
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12
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Lanshakov DA, Sukhareva EV, Bulygina VV, Bannova AV, Shaburova EV, Kalinina TS. Single neonatal dexamethasone administration has long-lasting outcome on depressive-like behaviour, Bdnf, Nt-3, p75ngfr and sorting receptors (SorCS1-3) stress reactive expression. Sci Rep 2021; 11:8092. [PMID: 33854153 PMCID: PMC8046778 DOI: 10.1038/s41598-021-87652-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 03/31/2021] [Indexed: 12/22/2022] Open
Abstract
Elevated glucocorticoid level in the early postnatal period is associated with glucocorticoid therapy prescribed at preterm delivery most often has severe long-lasting neurodevelopmental and behavioural effects. Detailed molecular mechanisms of such programming action of antenatal glucocorticoids on behaviour are still poorly understood. To address this question we studied neurotrophins: Bdnf, Nt-3, Ngf and their receptors: p75ngfr, Sorcs3 expression changes after subcutaneous dexamethasone (DEX) 0.2 mg/kg injection to P2 rat pups. Neurotrophins expression level was studied in the hippocampus (HPC). Disturbances in these brain regions have been implicated in the emergence of multiple psychopathologies. p75ngfr and Sorcs3 expression was studied in the brainstem—region where monoamine neurons are located. Immunohistochemically P75NTR protein level changes after DEX were investigated in the brainstem Locus Coereleus norepinephrine neurons (NE). In the first hours after DEX administration elevation of neurotrophins expression in HPC and decline of receptor’s expression in the NE brainstem neurons were observed. Another critical time point during maturation is adolescence. Impact of elevated glucocorticoid level in the neonatal period and unpredictable stress (CMUS) at the end of adolescence on depressive-like behaviour was studied. Single neonatal DEX injection leads to decrease in depressive-like behaviour, observed in FST, independently from chronic stress. Neonatal DEX administration decreased Ntf3 and SorCS1 expression in the brainstem. Also Bdnf mRNA level in the brainstem of these animals didn’t decrease after FST. CMUS at the end of adolescence changed p75ngfr and SorCS3 expression in the brainstem in the animals that received single neonatal DEX administration.
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Affiliation(s)
- D A Lanshakov
- Laboratory of Postgenomics Neurobiology, Institute of Cytology and Genetics, Russian Academy of Science, Novosibirsk, Russian Federation, 630090.
| | - E V Sukhareva
- Functional Neurogenomics Laboratory, Institute of Cytology and Genetics, Russian Academy of Science, Novosibirsk, Russian Federation, 630090.,Department of Natural Sciences, Novosibirsk State University, Novosibirsk, Russian Federation, 630090
| | - V V Bulygina
- Functional Neurogenomics Laboratory, Institute of Cytology and Genetics, Russian Academy of Science, Novosibirsk, Russian Federation, 630090
| | - A V Bannova
- Functional Neurogenomics Laboratory, Institute of Cytology and Genetics, Russian Academy of Science, Novosibirsk, Russian Federation, 630090
| | - E V Shaburova
- Functional Neurogenomics Laboratory, Institute of Cytology and Genetics, Russian Academy of Science, Novosibirsk, Russian Federation, 630090.,Department of Natural Sciences, Novosibirsk State University, Novosibirsk, Russian Federation, 630090
| | - T S Kalinina
- Functional Neurogenomics Laboratory, Institute of Cytology and Genetics, Russian Academy of Science, Novosibirsk, Russian Federation, 630090.,Department of Natural Sciences, Novosibirsk State University, Novosibirsk, Russian Federation, 630090
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13
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Olsen D, Wellner N, Kaas M, de Jong IEM, Sotty F, Didriksen M, Glerup S, Nykjaer A. Altered dopaminergic firing pattern and novelty response underlie ADHD-like behavior of SorCS2-deficient mice. Transl Psychiatry 2021; 11:74. [PMID: 33495438 PMCID: PMC7835366 DOI: 10.1038/s41398-021-01199-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 12/12/2020] [Accepted: 01/05/2021] [Indexed: 01/03/2023] Open
Abstract
Attention deficit hyperactivity disorder (ADHD) is the most frequently diagnosed neurodevelopmental disorder worldwide. Affected individuals present with hyperactivity, inattention, and cognitive deficits and display a characteristic paradoxical response to drugs affecting the dopaminergic system. However, the underlying pathophysiology of ADHD and how this relates to dopaminergic transmission remains to be fully understood. Sorcs2-/- mice uniquely recapitulate symptoms reminiscent of ADHD in humans. Here, we show that lack of SorCS2 in mice results in lower sucrose intake, indicating general reward deficits. Using in-vivo recordings, we further find that dopaminergic transmission in the ventral tegmental area (VTA) is shifted towards a more regular firing pattern with marked reductions in the relative occurrence of irregular firing in Sorcs2-/- mice. This was paralleled by abnormal acute behavioral responses to dopamine receptor agonists, suggesting fundamental differences in dopaminergic circuits and indicating a perturbation in the balance between the activities of the postsynaptic dopamine receptor DRD1 and the presynaptic inhibitory autoreceptor DRD2. Interestingly, the hyperactivity and drug response of Sorcs2-/- mice were markedly affected by novelty. Taken together, our findings show how loss of a candidate ADHD-risk gene has marked effects on dopaminergic circuit function and the behavioral response to the environment.
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Affiliation(s)
- Ditte Olsen
- grid.7048.b0000 0001 1956 2722Department of Biomedicine, Aarhus University, Hoegh-Guldbergsgade 10, DK-8000 Aarhus C, Denmark ,grid.424580.f0000 0004 0476 7612Neurodegeneration and Biologics, H. Lundbeck A/S, Ottiliavej 9, DK-2500 Valby, Denmark ,grid.7048.b0000 0001 1956 2722Present Address: Department of Biomedicine, Aarhus University, Hoegh-Guldbergsgade 10, DK-8000 Aarhus C, Denmark
| | - Niels Wellner
- grid.7048.b0000 0001 1956 2722Department of Biomedicine, Aarhus University, Hoegh-Guldbergsgade 10, DK-8000 Aarhus C, Denmark ,grid.7048.b0000 0001 1956 2722Danish Research Institute of Translational Neuroscience DANDRITE Nordic-EMBL Partnership, Department of Biomedicine, Aarhus University, Hoegh-Guldbergsgade 10, DK-8000 Aarhus C, Denmark
| | - Mathias Kaas
- grid.7048.b0000 0001 1956 2722Department of Biomedicine, Aarhus University, Hoegh-Guldbergsgade 10, DK-8000 Aarhus C, Denmark
| | - Inge E. M. de Jong
- grid.424580.f0000 0004 0476 7612Neurodegeneration and Biologics, H. Lundbeck A/S, Ottiliavej 9, DK-2500 Valby, Denmark
| | - Florence Sotty
- grid.424580.f0000 0004 0476 7612Neurodegeneration and Biologics, H. Lundbeck A/S, Ottiliavej 9, DK-2500 Valby, Denmark
| | - Michael Didriksen
- grid.424580.f0000 0004 0476 7612Neurodegeneration and Biologics, H. Lundbeck A/S, Ottiliavej 9, DK-2500 Valby, Denmark
| | - Simon Glerup
- Department of Biomedicine, Aarhus University, Hoegh-Guldbergsgade 10, DK-8000, Aarhus C, Denmark.
| | - Anders Nykjaer
- Department of Biomedicine, Aarhus University, Hoegh-Guldbergsgade 10, DK-8000, Aarhus C, Denmark. .,Danish Research Institute of Translational Neuroscience DANDRITE Nordic-EMBL Partnership, Department of Biomedicine, Aarhus University, Hoegh-Guldbergsgade 10, DK-8000, Aarhus C, Denmark. .,The Danish National Research Foundation Center PROMEMO, Aarhus University, Hoegh-Guldbergsgade 10, DK-8000, Aarhus C, Denmark. .,Department of Neurosurgery, Skejby University Hospital, Palle Juul-Jensens Blvd. 99, DK-8200, Aarhus N, Denmark.
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14
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Blondy S, Talbot H, Saada S, Christou N, Battu S, Pannequin J, Jauberteau M, Lalloué F, Verdier M, Mathonnet M, Perraud A. Overexpression of sortilin is associated with 5-FU resistance and poor prognosis in colorectal cancer. J Cell Mol Med 2021; 25:47-60. [PMID: 33325631 PMCID: PMC7810928 DOI: 10.1111/jcmm.15752] [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] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 06/30/2020] [Accepted: 07/30/2020] [Indexed: 02/06/2023] Open
Abstract
Colorectal cancer (CRC) is the third most common cancer worldwide. Even if 5-fluorouracil (5-FU) is used as the first-line chemotherapeutic drug, responsiveness is only 20-30%. Acquired resistance to 5-FU contributes to both poor patient prognosis and relapse, emphasizing the need to identify biomarkers. Sortilin, a vacuolar protein sorting 10 protein (Vps10p), implicated in protein trafficking, is over expressed in CRC cell lines cultured 72 hours in presence of 5-FU. This overexpression was also observed in 5-FU-resistant cells derived from these cell lines as well as in CRC primary cultures (or patients derived cell lines). A significantly higher expression of sortilin was observed in vivo, in 5-FU-treated tumours engrafted in Nude mice, as compared with non-treated tumour. A study of transcriptional regulation allowed identifying a decrease in ATF3 expression, as an explanation of sortilin overexpression following 5-FU treatment. In silico analysis revealed SORT1 expression correlation with poor prognosis. Moreover, sortilin expression was found to be positively correlated with CRC tumour grades. Collectively, our findings identify sortilin as a potential biomarker of 5-FU resistance associated with poor clinical outcomes and aggressiveness in CRC. As a new prognostic factor, sortilin expression could be used to fight against CRC.
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MESH Headings
- Adaptor Proteins, Vesicular Transport/genetics
- Adaptor Proteins, Vesicular Transport/metabolism
- Aged
- Aged, 80 and over
- Animals
- Cell Line, Tumor
- Colorectal Neoplasms/drug therapy
- Colorectal Neoplasms/genetics
- Colorectal Neoplasms/pathology
- Disease-Free Survival
- Drug Resistance, Neoplasm/drug effects
- Drug Resistance, Neoplasm/genetics
- Female
- Fluorouracil/therapeutic use
- Gene Expression Regulation, Neoplastic/drug effects
- Humans
- Male
- Mice, Nude
- Neoplasm Grading
- Prognosis
- Protein Transport/drug effects
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Treatment Outcome
- Xenograft Model Antitumor Assays
- Mice
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Affiliation(s)
- Sabrina Blondy
- Laboratoire EA3842 Contrôle de l’Activation CellulaireProgression Tumorale et Résistances thérapeutiques «CAPTuR»Faculté de médecineLimogesFrance
| | - Hugo Talbot
- Laboratoire EA3842 Contrôle de l’Activation CellulaireProgression Tumorale et Résistances thérapeutiques «CAPTuR»Faculté de médecineLimogesFrance
| | - Sofiane Saada
- Laboratoire EA3842 Contrôle de l’Activation CellulaireProgression Tumorale et Résistances thérapeutiques «CAPTuR»Faculté de médecineLimogesFrance
| | - Niki Christou
- Laboratoire EA3842 Contrôle de l’Activation CellulaireProgression Tumorale et Résistances thérapeutiques «CAPTuR»Faculté de médecineLimogesFrance
- Service de Chirurgie DigestiveEndocrinienne et GénéraleCHU de LimogesLimogesFrance
| | - Serge Battu
- Laboratoire EA3842 Contrôle de l’Activation CellulaireProgression Tumorale et Résistances thérapeutiques «CAPTuR»Faculté de médecineLimogesFrance
| | - Julie Pannequin
- IGFUniversité MontpellierCNRSINSERMMontpellier Cedex 5France
| | - Marie‐Odile Jauberteau
- Laboratoire EA3842 Contrôle de l’Activation CellulaireProgression Tumorale et Résistances thérapeutiques «CAPTuR»Faculté de médecineLimogesFrance
- Service d’ImmunologieCHU de LimogesLimogesFrance
| | - Fabrice Lalloué
- Laboratoire EA3842 Contrôle de l’Activation CellulaireProgression Tumorale et Résistances thérapeutiques «CAPTuR»Faculté de médecineLimogesFrance
| | - Mireille Verdier
- Laboratoire EA3842 Contrôle de l’Activation CellulaireProgression Tumorale et Résistances thérapeutiques «CAPTuR»Faculté de médecineLimogesFrance
| | - Muriel Mathonnet
- Laboratoire EA3842 Contrôle de l’Activation CellulaireProgression Tumorale et Résistances thérapeutiques «CAPTuR»Faculté de médecineLimogesFrance
- Service de Chirurgie DigestiveEndocrinienne et GénéraleCHU de LimogesLimogesFrance
| | - Aurélie Perraud
- Laboratoire EA3842 Contrôle de l’Activation CellulaireProgression Tumorale et Résistances thérapeutiques «CAPTuR»Faculté de médecineLimogesFrance
- Service de Chirurgie DigestiveEndocrinienne et GénéraleCHU de LimogesLimogesFrance
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15
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Christou N, Blondy S, David V, Verdier M, Lalloué F, Jauberteau MO, Mathonnet M, Perraud A. Neurotensin pathway in digestive cancers and clinical applications: an overview. Cell Death Dis 2020; 11:1027. [PMID: 33268796 PMCID: PMC7710720 DOI: 10.1038/s41419-020-03245-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 11/01/2020] [Accepted: 11/02/2020] [Indexed: 02/06/2023]
Abstract
Initially, NEUROTENSIN (NTS) has been shown to play physiological and biological functions as a neuro-transmitter/modulator in the central nervous system and as an endocrine factor in the periphery, through its binding to two kinds of receptors: NTSR1 and 2 (G protein-coupled receptors) and NTSR3/sortilin (a vacuolar protein-sorting 10-domain receptor). NTS also plays oncogenic roles in many types of cancer, including digestive cancers. In tumor tissues, NTS and NTSR1 expression is higher than in healthy ones and is associated with poor prognosis. NTS and NTRS1 promote cancer progression and play key functions in metastatic processes; they modulate several signaling pathways and they contribute to changes in the tumor microenvironment. Conversely, NTRS2 involvement in digestive cancers is poorly understood. Discovered for mediating NTS biological effects, sortilin recently emerged as a promising target as its expression was found to be increased in various types of cancers. Because it can be secreted, a soluble form of sortilin (sSortilin) appears as a new serum biomarker which, on the basis of recent studies, promises to be useful in both the diagnosis and tumor progression monitoring. More precisely, it appears that soluble sortilin can be associated with other receptors like TRKB. These associations occur in exosomes and trigger the aggressiveness of cancers like glioblastoma, leading to the concept of a possible composite theranostic biomarker. This review summarizes the oncogenic roles of the NTS signaling pathways in digestive cancers and discusses their emergence as promising early diagnostic and/or prognostic biomarkers and therapeutic targets.
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Affiliation(s)
- Niki Christou
- Laboratoire EA3842 CAPTuR « Contrôle de l'Activation cellulaire, Progression Tumorale et Résistances thérapeutiques », Faculté de médecine, 2 rue du Docteur Marcland, 87025, Limoges, France.
- Service de Chirurgie Digestive, Endocrinienne et Générale, CHU de Limoges, 2 avenue Martin Luther King, 87042, Limoges, France.
| | - Sabrina Blondy
- Laboratoire EA3842 CAPTuR « Contrôle de l'Activation cellulaire, Progression Tumorale et Résistances thérapeutiques », Faculté de médecine, 2 rue du Docteur Marcland, 87025, Limoges, France
| | - Valentin David
- Laboratoire EA3842 CAPTuR « Contrôle de l'Activation cellulaire, Progression Tumorale et Résistances thérapeutiques », Faculté de médecine, 2 rue du Docteur Marcland, 87025, Limoges, France
- Service de Pharmacie, CHU de Limoges, 2 avenue Martin Luther King, 87042, Limoges, France
| | - Mireille Verdier
- Laboratoire EA3842 CAPTuR « Contrôle de l'Activation cellulaire, Progression Tumorale et Résistances thérapeutiques », Faculté de médecine, 2 rue du Docteur Marcland, 87025, Limoges, France
| | - Fabrice Lalloué
- Laboratoire EA3842 CAPTuR « Contrôle de l'Activation cellulaire, Progression Tumorale et Résistances thérapeutiques », Faculté de médecine, 2 rue du Docteur Marcland, 87025, Limoges, France
| | - Marie-Odile Jauberteau
- Laboratoire EA3842 CAPTuR « Contrôle de l'Activation cellulaire, Progression Tumorale et Résistances thérapeutiques », Faculté de médecine, 2 rue du Docteur Marcland, 87025, Limoges, France
- Service d'Immunologie, CHU de Limoges, 2 avenue Martin Luther King, 87042, Limoges, France
| | - Muriel Mathonnet
- Laboratoire EA3842 CAPTuR « Contrôle de l'Activation cellulaire, Progression Tumorale et Résistances thérapeutiques », Faculté de médecine, 2 rue du Docteur Marcland, 87025, Limoges, France
- Service de Chirurgie Digestive, Endocrinienne et Générale, CHU de Limoges, 2 avenue Martin Luther King, 87042, Limoges, France
| | - Aurélie Perraud
- Laboratoire EA3842 CAPTuR « Contrôle de l'Activation cellulaire, Progression Tumorale et Résistances thérapeutiques », Faculté de médecine, 2 rue du Docteur Marcland, 87025, Limoges, France
- Service de Chirurgie Digestive, Endocrinienne et Générale, CHU de Limoges, 2 avenue Martin Luther King, 87042, Limoges, France
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16
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Al-Yozbaki M, Acha-Sagredo A, George A, Liloglou T, Wilson CM. Balancing neurotrophin pathway and sortilin function: Its role in human disease. Biochim Biophys Acta Rev Cancer 2020; 1874:188429. [DOI: 10.1016/j.bbcan.2020.188429] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 08/12/2020] [Accepted: 09/02/2020] [Indexed: 01/03/2023]
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17
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Olsen D, Kaas M, Lundhede J, Molgaard S, Nykjær A, Kjolby M, Østergaard SD, Glerup S. Reduced Alcohol Seeking and Withdrawal Symptoms in Mice Lacking the BDNF Receptor SorCS2. Front Pharmacol 2019; 10:499. [PMID: 31156431 PMCID: PMC6533533 DOI: 10.3389/fphar.2019.00499] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 04/18/2019] [Indexed: 11/13/2022] Open
Abstract
Alcohol use disorder (AUD) is characterized by repetitive and uncontrolled intake of alcohol with severe consequences for affected individuals, their families and society as a whole. Numerous studies have implicated brain-derived neurotrophic factor (BDNF) activity in the neurobiology underlying AUD. The BDNF signaling mechanism is complex and depends on two receptor systems, TrkB and p75NTR, which appear to have opposite effects on alcohol seeking behavior in animal models. We recently discovered that the sortilin-related receptor SorCS2 forms complexes with both TrkB and p75NTR and is important for BDNF activity in the developing and adult CNS. Moreover, the SORCS2 gene was recently identified as the top association signal for severity of alcohol withdrawal symptoms. Hence, we speculated that SorCS2 deficient mice would have an altered response to alcohol. The role of SorCS2 in the acute and adapted response to alcohol was therefore investigated by comparing SorCS2 knockout (Sorcs2-/- ) mice to wild type (WT) mice in three paradigms modeling alcohol sensitivity and consumption; alcohol-induced conditioned place preference, two-bottle choice test as well as the behavioral response to alcohol withdrawal. We found that, when compared to the WT mice, (I) Sorcs2-/- mice displayed complete lack of alcohol-induced place preference, (II) when given free choice between water and alcohol, Sorcs2-/- mice consumed less alcohol, and (III) Sorcs2-/- mice showed no handling-induced convulsion in response to alcohol withdrawal following extended alcohol exposure. Taken together, these results show that lack of the alcohol withdrawal risk gene Sorcs2 results in abnormal behavioral response to alcohol in mice. Consequently, SorCS2 may play an important role in the molecular pathways underlying AUD and complications associated with alcohol withdrawal.
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Affiliation(s)
- Ditte Olsen
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Mathias Kaas
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Jesper Lundhede
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Simon Molgaard
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Anders Nykjær
- Department of Biomedicine, Aarhus University, Aarhus, Denmark.,Department of Biomedicine, Nordic EMBL Partnership for Molecular Medicine, DANDRITE - Danish Research Institute of Translational Neuroscience, Aarhus University, Aarhus, Denmark.,Department of Neurosurgery, Aarhus University Hospital, Aarhus, Denmark.,The Danish National Research Foundation Center PROMEMO, Aarhus University, Aarhus, Denmark
| | - Mads Kjolby
- Department of Biomedicine, Aarhus University, Aarhus, Denmark.,Department of Biomedicine, Nordic EMBL Partnership for Molecular Medicine, DANDRITE - Danish Research Institute of Translational Neuroscience, Aarhus University, Aarhus, Denmark.,Danish Diabetes Academy, Novo Nordisk Foundation, Aarhus, Denmark
| | - Søren D Østergaard
- Department of Clinical Medicine, Aarhus University Hospital, Aarhus, Denmark.,Department of Affective Disorders, Aarhus University Hospital - Psychiatry, Aarhus, Denmark.,The Lundbeck Foundation Initiative for Integrative Psychiatric Research, iPSYCH, Aarhus, Denmark
| | - Simon Glerup
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
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18
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Neurotrophins and their involvement in digestive cancers. Cell Death Dis 2019; 10:123. [PMID: 30741921 PMCID: PMC6370832 DOI: 10.1038/s41419-019-1385-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 01/21/2019] [Accepted: 01/22/2019] [Indexed: 12/18/2022]
Abstract
Cancers of the digestive system, including esophageal, gastric, pancreatic, hepatic, and colorectal cancers, have a high incidence and mortality worldwide. Efficient therapies have improved patient care; however, many challenges remain including late diagnosis, disease recurrence, and resistance to therapies. Mechanisms responsible for these aforementioned challenges are numerous. This review focuses on neurotrophins, including NGF, BDNF, and NT3, and their specific tyrosine kinase receptors called tropomyosin receptor kinase (Trk A, B, C, respectively), associated with sortilin and the p75 neurotrophin receptor (p75NTR), and their implication in digestive cancers. Globally, p75NTR is a frequently downregulated tumor suppressor. On the contrary, Trk and their ligands are considered oncogenic factors. New therapies which target NT and/or their receptors, or use them as diagnosis biomarkers could help us to combat digestive cancers.
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19
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Mazella J, Borsotto M, Heurteaux C. The Involvement of Sortilin/NTSR3 in Depression as the Progenitor of Spadin and Its Role in the Membrane Expression of TREK-1. Front Pharmacol 2019; 9:1541. [PMID: 30670975 PMCID: PMC6331531 DOI: 10.3389/fphar.2018.01541] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 12/17/2018] [Indexed: 12/31/2022] Open
Abstract
The molecular identification of sortilin, also called neurotensin receptor-3, from three different biochemical approaches already predicted the involvement of the protein in numerous biological and cellular functions. The first important observation was that sortilin is synthesized as a precursor that is converted to a mature protein after cleavage by the protein convertase furin in late Golgi compartments. This maturation leads to the formation of a 44 amino acid peptide, the propeptide (PE). The release of this peptide when matured sortilin reached the plasma membrane remained to be demonstrated. Sortilin has been also shown to be shedded by matrix metalloproteases releasing a large extracellular fragment identified as soluble sortilin. Therefore, sortilin has been shown to interact with several proteins and receptors confirming its role in the sorting of cellular components to the plasma membrane and/or to the lysosomal pathway. Interestingly, sortilin physically interacts with the two pore domain potassium channel TREK-1 and the PE as well as its synthetic analog spadin is able to block the activation of TREK-1 highlighting their role in the depression pathology. The present review describes the advance of research that led to these results and how both the soluble form of sortilin and the sortilin-derived PE have been detected in human serum and whose levels are affected in patients with major depressive disorder (MDD). The use of spadin as an antidepressant and the further role of soluble sortilin and of sortilin-derived PE as potential biomarkers during depression statement and/or remission of the pathology are considered and discussed in this review.
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Affiliation(s)
- Jean Mazella
- CNRS, UMR 7275, Institut de Pharmacologie Moléculaire et Cellulaire, Université Côte d'Azur, Valbonne, France
| | - Marc Borsotto
- CNRS, UMR 7275, Institut de Pharmacologie Moléculaire et Cellulaire, Université Côte d'Azur, Valbonne, France
| | - Catherine Heurteaux
- CNRS, UMR 7275, Institut de Pharmacologie Moléculaire et Cellulaire, Université Côte d'Azur, Valbonne, France
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Buttenschøn HN, Elfving B, Nielsen M, Skeldal S, Kaas M, Mors O, Glerup S. Exploring the sortilin related receptor, SorLA, in depression. J Affect Disord 2018; 232:260-267. [PMID: 29499509 DOI: 10.1016/j.jad.2018.02.050] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 01/29/2018] [Accepted: 02/16/2018] [Indexed: 11/29/2022]
Abstract
BACKGROUND Studies of individual biomarkers for depression have shown insufficient sensitivity and specificity for clinical use, and most likely combinations of biomarkers may provide a better signature. The sorting-related receptor with A-type repeats (SorLA) is a well-studied pathogenic factor for Alzheimer's. SorLA belongs to the Vps10p domain receptor family, which also encompasses sortilin and SorCS1-3. All family members have been implicated in neurological and mental disorders. Notably, the SORCS3 gene is genome-wide significantly associated with depression and serum protein levels of sortilin are reduced in depressed individuals. SorLA regulates the activity of neurotrophic factors and cytokines and we hence speculated that SorLA might be implicated in depression. METHODS Serum SorLA levels were measured in two well-defined clinical samples using ELISA. Generalized linear models were used in the statistical analyses. RESULTS We identified a multivariate model to discriminate depressed individuals from healthy controls. Interestingly, the model consisted of serum SorLA levels and additional four predictors: previous depressive episode, stressful life events, serum levels of sortilin and VEGF. However, as an isolated factor, we observed no significant difference in SorLA levels between 140 depressed individuals and 140 healthy controls. Nevertheless, we observed a significant increase in SorLA levels following 12 weeks of treatment with nortriptyline, but not escitalopram. LIMITATIONS The number of biomarkers included in the multivariate model for depression and lack of replication limit our study. CONCLUSIONS Our results suggest SorLA as one of five factors that in combination may support the depression diagnosis, but not as an individual biomarker for depression or treatment response.
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Affiliation(s)
- Henriette N Buttenschøn
- Translational Neuropsychiatry Unit, Department of Clinical Medicine, Aarhus University, Denmark; The Lundbeck Foundation Initiative for Integrative Psychiatric Research, iPSYCH, Aarhus, Denmark.
| | - Betina Elfving
- Translational Neuropsychiatry Unit, Department of Clinical Medicine, Aarhus University, Denmark
| | - Marit Nielsen
- Translational Neuropsychiatry Unit, Department of Clinical Medicine, Aarhus University, Denmark
| | - Sune Skeldal
- Department of Biomedicine, Aarhus University, 8000 Aarhus C, Denmark
| | - Mathias Kaas
- Department of Biomedicine, Aarhus University, 8000 Aarhus C, Denmark
| | - Ole Mors
- The Lundbeck Foundation Initiative for Integrative Psychiatric Research, iPSYCH, Aarhus, Denmark; Psychosis Research Unit, Aarhus University Hospital, Risskov, Denmark
| | - Simon Glerup
- Department of Biomedicine, Aarhus University, 8000 Aarhus C, Denmark; The Lundbeck Foundation Research Center, MIND, Aarhus University, Denmark
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21
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Xu SY, Jiang J, Pan A, Yan C, Yan XX. Sortilin: a new player in dementia and Alzheimer-type neuropathology. Biochem Cell Biol 2018; 96:491-497. [PMID: 29687731 DOI: 10.1139/bcb-2018-0023] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Age-related dementias are now a major mortality factor among most human populations in the world, with Alzheimer's disease (AD) being the leading dementia-causing neurodegenerative disease. The pathogenic mechanism underlying dementia disorders, and AD in particular, remained largely unknown. Efforts to develop drugs targeting the disease's hallmark lesions, such as amyloid plaque and tangle pathologies, have been unsuccessful so far. The vacuolar protein sorting 10p (Vps10p) family plays a critical role in membrane signal transduction and protein sorting and trafficking between intracellular compartments. Data emerging during the past few years point to an involvement of this family in the development of AD. Specifically, the Vps10p member sortilin has been shown to participate in amyloid plaque formation, tau phosphorylation, abnormal protein sorting and apoptosis. In this minireview, we update some latest findings from animal experiments and human brain studies suggesting that abnormal sortilin expression is associated with AD-type neuropathology, warranting further research that might lead to novel targets for the development of AD therapies.
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Affiliation(s)
- Shu-Yin Xu
- a Department of Anatomy and Neurobiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410013, China
| | - Juan Jiang
- a Department of Anatomy and Neurobiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410013, China
| | - Aihua Pan
- a Department of Anatomy and Neurobiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410013, China
| | - Cai Yan
- a Department of Anatomy and Neurobiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410013, China.,b Department of Histology and Embryology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410013, China
| | - Xiao-Xin Yan
- a Department of Anatomy and Neurobiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410013, China
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22
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Abstract
BACKGROUND The identification of biomarkers for depression is of great clinical relevance as the diagnosis is currently subjective. Recent research points towards sortilin as a potential biomarker for depression, and the aim of the current study was to investigate the serum sortilin level in response to antidepressant treatment. METHODS The study included 56 depressed individuals of which 41 responded to treatment. Depression scores and serum levels of sortilin were measured at baseline and after 12 weeks of antidepressant treatment. Statistical analyses were performed using Stata 13. RESULTS The depression score and response to treatment were not predicted by the sortilin level. Likewise, we observed no significant change in serum sortilin levels following 12 weeks of antidepressant treatment. Furthermore, no association between the serum sortilin level and depression score was observed. CONCLUSION The results do not point towards sortilin as a state-dependent biomarker.
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23
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Boggild S, Molgaard S, Glerup S, Nyengaard JR. Highly segregated localization of the functionally related vps10p receptors sortilin and SorCS2 during neurodevelopment. J Comp Neurol 2018; 526:1267-1286. [PMID: 29405286 DOI: 10.1002/cne.24403] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2017] [Revised: 01/20/2018] [Accepted: 01/22/2018] [Indexed: 12/11/2022]
Abstract
Nervous system development is a precisely orchestrated series of events requiring a multitude of intrinsic and extrinsic cues. Sortilin and SorCS2 are members of the Vps10p receptor family with complementary influence on some of these cues including the neurotrophins (NTs). However, the developmental time points where sortilin and SorCS2 exert their activities in conjunction or independently still remain unclear. In this study we present the characterization of the spatiotemporal expression pattern of sortilin and SorCS2 in the developing murine nervous system. Sortilin is highly expressed in the fetal nervous system with expression localized to distinct cell populations. Expression was high in neurons of the cortical plate and developing allocortex, as well as subpallial structures. Furthermore, the neuroepithelium lining the ventricles and the choroid plexus showed high expression of sortilin, together with the developing retina, spinal ganglia, and sympathetic ganglia. In contrast, SorCS2 was confined in a marked degree to the thalamus and, at E13.5, the floor plate from midbrain rostrally to spinal cord caudally. SorCS2 was also found in the ventricular zones of the ventral hippocampus and nucleus accumbens areas, in the meninges and in Schwann cells. Hence, sortilin and SorCS2 are extensively present in several distinct anatomical areas in the developing nervous system and are rarely co-expressed. Possible functions of sortilin and SorCS2 pertain to NT signaling, axon guidance and beyond. The present data will form the basis for hypotheses and study designs for unravelling the functions of sortilin and SorCS2 during the establishment of neuronal structures and connections.
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Affiliation(s)
- Simon Boggild
- Department of Clinical Medicine, Aarhus University, MIND Centre, Core Center for Molecular Morphology, Section for Stereology and Microscopy, Aarhus C, 8000, Denmark.,MIND Centre, Department of Biomedicine, Aarhus University, Ole Worms Allé 3, Aarhus C, 8000, Denmark
| | - Simon Molgaard
- Department of Clinical Medicine, Aarhus University, MIND Centre, Core Center for Molecular Morphology, Section for Stereology and Microscopy, Aarhus C, 8000, Denmark.,MIND Centre, Department of Biomedicine, Aarhus University, Ole Worms Allé 3, Aarhus C, 8000, Denmark
| | - Simon Glerup
- MIND Centre, Department of Biomedicine, Aarhus University, Ole Worms Allé 3, Aarhus C, 8000, Denmark
| | - Jens Randel Nyengaard
- Department of Clinical Medicine, Aarhus University, MIND Centre, Core Center for Molecular Morphology, Section for Stereology and Microscopy, Aarhus C, 8000, Denmark.,Centre for Stochastic Geometry and Advanced Bioimaging, Aarhus University, Aarhus C, 8000, Denmark
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24
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Januliene D, Manavalan A, Ovesen PL, Pedersen KM, Thirup S, Nykjær A, Moeller A. Hidden Twins: SorCS Neuroreceptors Form Stable Dimers. J Mol Biol 2017; 429:2907-2917. [PMID: 28827148 DOI: 10.1016/j.jmb.2017.08.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 08/09/2017] [Accepted: 08/11/2017] [Indexed: 11/26/2022]
Abstract
SorCS1, SorCS2 and SorCS3 belong to the Vps10p-domain family of multiligand receptors. Genetic and functional studies have linked SorCS receptors to psychiatric disorders, Alzheimer's disease and type 2 diabetes, demonstrating critical roles in neuronal functionality and metabolic control. Surprisingly, their structural composition has so far not been studied. Here we have characterized SorCS1, SorCS2 and SorCS3 using biochemical methods and electron microscopy. We found that their purified extracellular domains co-exist in stable dimeric and monomeric populations. This was supported by co-immunoprecipitation experiments, where membrane-bound dimers were successfully pulled down from cell lysate. While dimers were virtually unbreakable, dimerization of the monomeric population was promoted through enzymatic deglycosylation. We conclude that post-translational modifications, specifically the degree and pattern of glycosylation, regulate the oligomeric state of the protein. Hence, cells may dictate ligand specificity by controlling the ratio between monomers and dimers and, therefore, regulate the multiple functions of SorCS receptors.
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Affiliation(s)
- Dovile Januliene
- Department of Structural Biology, Max Planck Institute of Biophysics, Max-von-Laue-Straße 3, 60438 Frankfurt am Main, Germany; DANDRITE, iNANO, Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark
| | | | - Peter Lund Ovesen
- DANDRITE, Department of Biomedicine, Aarhus University, Ole Worms Allé 3, 8000 Aarhus C, Denmark
| | - Karen-Marie Pedersen
- DANDRITE, Department of Biomedicine, Aarhus University, Ole Worms Allé 3, 8000 Aarhus C, Denmark
| | - Søren Thirup
- MIND Centre, Department of Molecular Biology and Genetics, Aarhus University, Gustav Wieds Vej 10C, 8000 Aarhus C, Denmark
| | - Anders Nykjær
- Mayo Clinic, 4500 San Pablo Rd S, Jacksonville, FL 32224, USA; DANDRITE, Department of Biomedicine, Aarhus University, Ole Worms Allé 3, 8000 Aarhus C, Denmark
| | - Arne Moeller
- Department of Structural Biology, Max Planck Institute of Biophysics, Max-von-Laue-Straße 3, 60438 Frankfurt am Main, Germany; DANDRITE, iNANO, Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark.
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25
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Andersen JL, Lindberg S, Langgård M, Maltas PJ, Rønn LCB, Bundgaard C, Strandbygaard D, Thirup S, Watson SP. The identification of novel acid isostere based inhibitors of the VPS10P family sorting receptor Sortilin. Bioorg Med Chem Lett 2017; 27:2629-2633. [DOI: 10.1016/j.bmcl.2017.02.028] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2017] [Revised: 02/13/2017] [Accepted: 02/14/2017] [Indexed: 11/17/2022]
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26
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Physiological and therapeutic regulation of PCSK9 activity in cardiovascular disease. Basic Res Cardiol 2017; 112:32. [PMID: 28439730 PMCID: PMC5403857 DOI: 10.1007/s00395-017-0619-0] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Accepted: 04/07/2017] [Indexed: 12/14/2022]
Abstract
Ischemic heart disease is the main cause of death worldwide and is accelerated by increased levels of low-density lipoprotein cholesterol (LDL-C). Proprotein convertase subtilisin/kexin type 9 (PCSK9) is a potent circulating regulator of LDL-C through its ability to induce degradation of the LDL receptor (LDLR) in the lysosome of hepatocytes. Only in the last few years, a number of breakthroughs in the understanding of PCSK9 biology have been reported illustrating how PCSK9 activity is tightly regulated at several levels by factors influencing its transcription, secretion, or by extracellular inactivation and clearance. Two humanized antibodies directed against the LDLR-binding site in PCSK9 received approval by the European and US authorities and additional PCSK9 directed therapeutics are climbing up the phases of clinical trials. The first outcome data of the PCSK9 inhibitor evolocumab reported a significant reduction in the composite endpoint (cardiovascular death, myocardial infarction, or stroke) and further outcome data are awaited. Meanwhile, it became evident that PCSK9 has (patho)physiological roles in several cardiovascular cells. In this review, we summarize and discuss the recent biological and clinical data on PCSK9, the regulation of PCSK9, its extra-hepatic activities focusing on cardiovascular cells, molecular concepts to target PCSK9, and finally briefly summarize the data of recent clinical studies.
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27
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Affiliation(s)
- Ahmed Z. El-Hashim
- Department of Pharmacology and Therapeutics, Faculty of Pharmacy, Kuwait University, Kuwait City, Kuwait
| | - Sahar M. Jaffal
- Department of Pharmacology and Therapeutics, Faculty of Pharmacy, Kuwait University, Kuwait City, Kuwait
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28
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Christiansen GB, Andersen KH, Riis S, Nykjaer A, Bolcho U, Jensen MS, Holm MM. The sorting receptor SorCS3 is a stronger regulator of glutamate receptor functions compared to GABAergic mechanisms in the hippocampus. Hippocampus 2017; 27:235-248. [DOI: 10.1002/hipo.22689] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Revised: 11/15/2016] [Accepted: 11/30/2016] [Indexed: 12/28/2022]
Affiliation(s)
| | | | - Sarah Riis
- Department of Biomedicine; Aarhus University; Aarhus Denmark
| | - Anders Nykjaer
- DANDRITE, Department of Biomedicine; Aarhus University; Aarhus Denmark
| | - Ulrik Bolcho
- DANDRITE, Department of Biomedicine; Aarhus University; Aarhus Denmark
| | | | - Mai Marie Holm
- Department of Biomedicine; Aarhus University; Aarhus Denmark
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29
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Glerup S, Bolcho U, Mølgaard S, Bøggild S, Vaegter CB, Smith AH, Nieto-Gonzalez JL, Ovesen PL, Pedersen LF, Fjorback AN, Kjolby M, Login H, Holm MM, Andersen OM, Nyengaard JR, Willnow TE, Jensen K, Nykjaer A. SorCS2 is required for BDNF-dependent plasticity in the hippocampus. Mol Psychiatry 2016; 21:1740-1751. [PMID: 27457814 DOI: 10.1038/mp.2016.108] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Revised: 04/06/2016] [Accepted: 04/18/2016] [Indexed: 12/16/2022]
Abstract
SorCS2 is a member of the Vps10p-domain receptor gene family receptors with critical roles in the control of neuronal viability and function. Several genetic studies have suggested SORCS2 to confer risk of bipolar disorder, schizophrenia and attention deficit-hyperactivity disorder. Here we report that hippocampal N-methyl-d-aspartate receptor-dependent synaptic plasticity is eliminated in SorCS2-deficient mice. This defect was traced to the ability of SorCS2 to form complexes with the neurotrophin receptor p75NTR, required for pro-brain-derived neurotrophic factor (BDNF) to induce long-term depression, and with the BDNF receptor tyrosine kinase TrkB to elicit long-term potentiation. Although the interaction with p75NTR was static, SorCS2 bound to TrkB in an activity-dependent manner to facilitate its translocation to postsynaptic densities for synaptic tagging and maintenance of synaptic potentiation. Neurons lacking SorCS2 failed to respond to BDNF by TrkB autophosphorylation, and activation of downstream signaling cascades, impacting neurite outgrowth and spine formation. Accordingly, Sorcs2-/- mice displayed impaired formation of long-term memory, increased risk taking and stimulus seeking behavior, enhanced susceptibility to stress and impaired prepulse inhibition. Our results identify SorCS2 as an indispensable coreceptor for p75NTR and TrkB in hippocampal neurons and suggest SORCS2 as the link between proBDNF/BDNF signaling and mental disorders.
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Affiliation(s)
- S Glerup
- The Lundbeck Foundation Research Center MIND, Danish Research Institute of Translational Neuroscience DANDRITE- Nordic EMBL Partnership for Molecular Medicine, Aarhus C, Denmark
- Department of Biomedicine, Aarhus University, Aarhus C, Denmark
| | - U Bolcho
- The Lundbeck Foundation Research Center MIND, Danish Research Institute of Translational Neuroscience DANDRITE- Nordic EMBL Partnership for Molecular Medicine, Aarhus C, Denmark
- Department of Biomedicine, Aarhus University, Aarhus C, Denmark
| | - S Mølgaard
- The Lundbeck Foundation Research Center MIND, Danish Research Institute of Translational Neuroscience DANDRITE- Nordic EMBL Partnership for Molecular Medicine, Aarhus C, Denmark
- Department of Biomedicine, Aarhus University, Aarhus C, Denmark
| | - S Bøggild
- The Lundbeck Foundation Research Center MIND, Danish Research Institute of Translational Neuroscience DANDRITE- Nordic EMBL Partnership for Molecular Medicine, Aarhus C, Denmark
- Department of Biomedicine, Aarhus University, Aarhus C, Denmark
| | - C B Vaegter
- The Lundbeck Foundation Research Center MIND, Danish Research Institute of Translational Neuroscience DANDRITE- Nordic EMBL Partnership for Molecular Medicine, Aarhus C, Denmark
- Department of Biomedicine, Aarhus University, Aarhus C, Denmark
| | - A H Smith
- Yale School of Medicine, Interdepartmental Neuroscience Program and Medical Scientist Training Program, New Haven, CT, USA
- Department of Psychiatry, VAT CT Healthcare Center, and Yale School of Medicine, New Haven, CT, USA
| | | | - P L Ovesen
- The Lundbeck Foundation Research Center MIND, Danish Research Institute of Translational Neuroscience DANDRITE- Nordic EMBL Partnership for Molecular Medicine, Aarhus C, Denmark
- Department of Biomedicine, Aarhus University, Aarhus C, Denmark
| | - L F Pedersen
- The Lundbeck Foundation Research Center MIND, Danish Research Institute of Translational Neuroscience DANDRITE- Nordic EMBL Partnership for Molecular Medicine, Aarhus C, Denmark
- Department of Biomedicine, Aarhus University, Aarhus C, Denmark
| | - A N Fjorback
- Department of Biomedicine, Aarhus University, Aarhus C, Denmark
| | - M Kjolby
- The Lundbeck Foundation Research Center MIND, Danish Research Institute of Translational Neuroscience DANDRITE- Nordic EMBL Partnership for Molecular Medicine, Aarhus C, Denmark
- Department of Biomedicine, Aarhus University, Aarhus C, Denmark
| | - H Login
- The Lundbeck Foundation Research Center MIND, Danish Research Institute of Translational Neuroscience DANDRITE- Nordic EMBL Partnership for Molecular Medicine, Aarhus C, Denmark
- Department of Biomedicine, Aarhus University, Aarhus C, Denmark
| | - M M Holm
- Department of Biomedicine, Aarhus University, Aarhus C, Denmark
| | - O M Andersen
- The Lundbeck Foundation Research Center MIND, Danish Research Institute of Translational Neuroscience DANDRITE- Nordic EMBL Partnership for Molecular Medicine, Aarhus C, Denmark
- Department of Biomedicine, Aarhus University, Aarhus C, Denmark
| | - J R Nyengaard
- MIND Center, Stereology and Electron Microscopy Laboratory, Aarhus University, Aarhus C, Denmark
| | - T E Willnow
- Max-Delbrück-Center for Molecular Medicine, Berlin, Germany
| | - K Jensen
- Institute of Neuroscience and Physiology, The Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden
| | - A Nykjaer
- The Lundbeck Foundation Research Center MIND, Danish Research Institute of Translational Neuroscience DANDRITE- Nordic EMBL Partnership for Molecular Medicine, Aarhus C, Denmark
- Department of Biomedicine, Aarhus University, Aarhus C, Denmark
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
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30
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Molgaard S, Demontis D, Nicholson AM, Finch NA, Petersen RC, Petersen CM, Rademakers R, Nykjaer A, Glerup S. Soluble sortilin is present in excess and positively correlates with progranulin in CSF of aging individuals. Exp Gerontol 2016; 84:96-100. [DOI: 10.1016/j.exger.2016.09.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 08/12/2016] [Accepted: 09/05/2016] [Indexed: 11/26/2022]
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31
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Schmidt V, Willnow TE. Protein sorting gone wrong – VPS10P domain receptors in cardiovascular and metabolic diseases. Atherosclerosis 2016; 245:194-9. [DOI: 10.1016/j.atherosclerosis.2015.11.027] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 11/04/2015] [Accepted: 11/23/2015] [Indexed: 01/02/2023]
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32
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Increased serum levels of sortilin are associated with depression and correlated with BDNF and VEGF. Transl Psychiatry 2015; 5:e677. [PMID: 26556286 PMCID: PMC5068760 DOI: 10.1038/tp.2015.167] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Revised: 09/17/2015] [Accepted: 09/19/2015] [Indexed: 12/25/2022] Open
Abstract
Neurotrophic factors have been investigated in relation to depression. The aim of the present study was to widen this focus to sortilin, a receptor involved in neurotrophic signalling. The serum sortilin level was investigated in 152 individuals with depression and 216 control individuals, and eight genetic markers located within the SORT1 gene were successfully analysed for association with depression. Genotyping was performed using the Sequenom MassARRAY platform. All the individuals returned a questionnaire and participated in a semi-structured diagnostic interview. Sortilin levels were measured by immunoassay, and potential determinants of the serum sortilin level were assessed by generalized linear models. Serum levels of brain-derived neurotrophic factor (BDNF) and vascular endothelial growth factor (VEGF) were measured in previous studies. We identified a significant increase of serum sortilin levels in depressed individuals compared with controls (P=0.0002) and significant positive correlation between serum sortilin levels and the corresponding levels of BDNF and VEGF. None of the genotyped SNPs were associated with depression. Additional analyses showed that the serum sortilin level was influenced by several other factors. Alcohol intake and body mass index, as well as depression, serum BDNF and serum VEGF were identified as predictors of serum sortilin levels in our final multivariate model. In conclusion, the results suggest a role of circulating sortilin in depression which may relate to altered activity of neurotrophic factors.
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33
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Klinger SC, Siupka P, Nielsen MS. Retromer-Mediated Trafficking of Transmembrane Receptors and Transporters. MEMBRANES 2015; 5:288-306. [PMID: 26154780 PMCID: PMC4584283 DOI: 10.3390/membranes5030288] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Accepted: 06/29/2015] [Indexed: 12/21/2022]
Abstract
Transport between the endoplasmatic reticulum, the Golgi-network, the endo-lysosomal system and the cell surface can be categorized as anterograde or retrograde, describing traffic that goes forward or backward, respectively. Traffic going from the plasma membrane to endosomes and lysosomes or the trans-Golgi network (TGN) constitutes the major retrograde transport routes. Several transmembrane proteins undergo retrograde transport as part of a recycling mechanism that contributes to reutilization and maintenance of a steady-state protein localization. In addition, some receptors are hijacked by exotoxins and used for entry and intracellular transport. The physiological relevance of retrograde transport cannot be overstated. Retrograde trafficking of the amyloid precursor protein determines the distribution between organelles, and hence the possibility of cleavage by γ-secretase. Right balancing of the pathways is critical for protection against Alzheimer’s disease. During embryonic development, retrograde transport of Wntless to the TGN is essential for the following release of Wnt from the plasma membrane. Furthermore, overexpression of Wntless has been linked to oncogenesis. Here, we review relevant aspects of the retrograde trafficking of mammalian transmembrane receptors and transporters, with focus on the retromer-mediated transport between endosomes and the TGN.
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Affiliation(s)
- Stine C Klinger
- The Lundbeck Foundation Initiative on Brain Barriers and Drug Delivery, Department of Biomedicine, Aarhus University, 8000 Aarhus C, Denmark.
| | - Piotr Siupka
- The Lundbeck Foundation Initiative on Brain Barriers and Drug Delivery, Department of Biomedicine, Aarhus University, 8000 Aarhus C, Denmark.
| | - Morten S Nielsen
- The Lundbeck Foundation Initiative on Brain Barriers and Drug Delivery, Department of Biomedicine, Aarhus University, 8000 Aarhus C, Denmark.
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