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Scheil KKA, Sánchez-Lafuente CL, Reive BS, Halvorson CS, Floyd J, Reid HMO, Johnston JN, Kalynchuk LE, Caruncho HJ. Time-dependent antidepressant-like effects of reelin and ketamine in the repeated-corticosterone model of chronic stress. Prog Neuropsychopharmacol Biol Psychiatry 2024; 132:110998. [PMID: 38552775 DOI: 10.1016/j.pnpbp.2024.110998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 03/15/2024] [Accepted: 03/26/2024] [Indexed: 04/01/2024]
Abstract
There is an urgent need for novel antidepressants, given that approximately 30% of those diagnosed with depression do not respond adequately to first-line treatment. Additionally, monoaminergic-based antidepressants have a substantial therapeutic time-lag, often taking months to reach full therapeutic effect. Ketamine, an N-methyl-d-aspartate receptor (NMDAR) antagonist is the only current effective rapid-acting antidepressant, demonstrating efficacy within hours and lasting up to two weeks with an acute dose. Reelin, an extracellular matrix glycoprotein, has demonstrated rapid-acting antidepressant-like effects at 24 h, however the exact timescale of these effects has not been investigated. To determine the short and long-term effects of reelin, female Long Evans rats (n = 120) underwent a chronic corticosterone (CORT; or vehicle) paradigm (40 mg/kg, 21 days). On day 21, rats were treated with reelin (3μg; i.v.), ketamine (10 mg/kg; i.p.), both reelin and ketamine (same doses), or vehicle (saline). Behavioural and biological effects were then evaluated at 1 h, 6 h, 12 h, and 1 week after treatment. The 1-week cohort continued CORT injections to ensure the effect of chronic stress was not lost. Individually, both reelin and ketamine significantly rescued CORT-induced behaviour and hippocampal reelin expression at all timepoints. Ketamine rescued a decrease in dendritic maturity as induced by CORT. Synergistic effects of reelin and ketamine appeared at 1-week, suggesting a potential additive effect of the antidepressant-like actions. Taken together, this study provides further support for reelin-based therapeutics to develop rapid-acting antidepressant.
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Affiliation(s)
- Kaylene K A Scheil
- Division of Medical Sciences, University of Victoria, Victoria, BC V8P 5C2, Canada
| | | | - Brady S Reive
- Division of Medical Sciences, University of Victoria, Victoria, BC V8P 5C2, Canada
| | - Ciara S Halvorson
- Division of Medical Sciences, University of Victoria, Victoria, BC V8P 5C2, Canada
| | - Jennifer Floyd
- Division of Medical Sciences, University of Victoria, Victoria, BC V8P 5C2, Canada
| | - Hannah M O Reid
- Division of Medical Sciences, University of Victoria, Victoria, BC V8P 5C2, Canada
| | - Jenessa N Johnston
- Division of Medical Sciences, University of Victoria, Victoria, BC V8P 5C2, Canada
| | - Lisa E Kalynchuk
- Division of Medical Sciences, University of Victoria, Victoria, BC V8P 5C2, Canada
| | - Hector J Caruncho
- Division of Medical Sciences, University of Victoria, Victoria, BC V8P 5C2, Canada.
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Hamad MIK, Rabaya O, Jbara A, Daoud S, Petrova P, Ali BR, Allouh MZ, Herz J, Förster E. Reelin Regulates Developmental Desynchronization Transition of Neocortical Network Activity. Biomolecules 2024; 14:593. [PMID: 38786001 PMCID: PMC11118507 DOI: 10.3390/biom14050593] [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: 03/12/2024] [Revised: 04/29/2024] [Accepted: 05/02/2024] [Indexed: 05/25/2024] Open
Abstract
During the first and second stages of postnatal development, neocortical neurons exhibit a wide range of spontaneous synchronous activity (SSA). Towards the end of the second postnatal week, the SSA is replaced by a more sparse and desynchronized firing pattern. The developmental desynchronization of neocortical spontaneous neuronal activity is thought to be intrinsically generated, since sensory deprivation from the periphery does not affect the time course of this transition. The extracellular protein reelin controls various aspects of neuronal development through multimodular signaling. However, so far it is unclear whether reelin contributes to the developmental desynchronization transition of neocortical neurons. The present study aims to investigate the role of reelin in postnatal cortical developmental desynchronization using a conditional reelin knockout (RelncKO) mouse model. Conditional reelin deficiency was induced during early postnatal development, and Ca2+ recordings were conducted from organotypic cultures (OTCs) of the somatosensory cortex. Our results show that both wild type (wt) and RelncKO exhibited an SSA pattern during the early postnatal week. However, at the end of the second postnatal week, wt OTCs underwent a transition to a desynchronized network activity pattern, while RelncKO activity remained synchronous. This changing activity pattern suggests that reelin is involved in regulating the developmental desynchronization of cortical neuronal network activity. Moreover, the developmental desynchronization impairment observed in RelncKO was rescued when RelncKO OTCs were co-cultured with wt OTCs. Finally, we show that the developmental transition to a desynchronized state at the end of the second postnatal week is not dependent on glutamatergic signaling. Instead, the transition is dependent on GABAAR and GABABR signaling. The results suggest that reelin controls developmental desynchronization through GABAAR and GABABR signaling.
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Affiliation(s)
- Mohammad I K Hamad
- Department of Anatomy, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain 17666, United Arab Emirates
| | - Obada Rabaya
- Department of Neuroanatomy and Molecular Brain Research, Medical Faculty, Ruhr University Bochum, 44801 Bochum, Germany
| | - Abdalrahim Jbara
- Department of Neuroanatomy and Molecular Brain Research, Medical Faculty, Ruhr University Bochum, 44801 Bochum, Germany
| | - Solieman Daoud
- Department of Neuroanatomy and Molecular Brain Research, Medical Faculty, Ruhr University Bochum, 44801 Bochum, Germany
| | - Petya Petrova
- Department of Neuroanatomy and Molecular Brain Research, Medical Faculty, Ruhr University Bochum, 44801 Bochum, Germany
| | - Bassam R Ali
- Department of Genetics and Genomics, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain 17666, United Arab Emirates
| | - Mohammed Z Allouh
- Department of Anatomy, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain 17666, United Arab Emirates
| | - Joachim Herz
- Departments of Molecular Genetics, Neuroscience, Neurology and Neurotherapeutics, Center for Translational Neurodegeneration Research, University of Texas Southwestern Medical Center, Dallas, TX 5323, USA
| | - Eckart Förster
- Department of Neuroanatomy and Molecular Brain Research, Medical Faculty, Ruhr University Bochum, 44801 Bochum, Germany
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Nogueira VB, de Oliveira Mendes-Aguiar C, Teixeira DG, Freire-Neto FP, Tassi LZ, Ferreira LC, Wilson ME, Lima JG, Jeronimo SMB. Impaired signaling pathways on Berardinelli-Seip congenital lipodystrophy macrophages during Leishmania infantum infection. Sci Rep 2024; 14:11236. [PMID: 38755198 PMCID: PMC11099049 DOI: 10.1038/s41598-024-61663-6] [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: 02/01/2024] [Accepted: 05/08/2024] [Indexed: 05/18/2024] Open
Abstract
Berardinelli-Seip congenital lipodystrophy (CGL), a rare autosomal recessive disorder, is characterized by a lack of adipose tissue. Infections are one of the major causes of CGL individuals' premature death. The mechanisms that predispose to infections are poorly understood. We used Leishmania infantum as an in vitro model of intracellular infection to explore mechanisms underlying the CGL infection processes, and to understand the impact of host mutations on Leishmania survival, since this pathogen enters macrophages through specialized membrane lipid domains. The transcriptomic profiles of both uninfected and infected monocyte-derived macrophages (MDMs) from CGL (types 1 and 2) and controls were studied. MDMs infected with L. infantum showed significantly downregulated expression of genes associated with infection-response pathways (MHC-I, TCR-CD3, and granzymes). There was a transcriptomic signature in CGL cells associated with impaired membrane trafficking and signaling in response to infection, with concomitant changes in the expression of membrane-associated genes in parasites (e.g. δ-amastins). We identified pathways suggesting the lipid storage dysfunction led to changes in phospholipids expression and impaired responses to infection, including immune synapse (antigen presentation, IFN-γ signaling, JAK/STAT); endocytosis; NF-kappaB signaling; and phosphatidylinositol biosynthesis. In summary, lipid metabolism of the host plays an important role in determining antigen presentation pathways.
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Affiliation(s)
- Viviane Brito Nogueira
- Health Sciences Center, Federal University of Rio Grande do Norte, Natal, Brazil
- Institute of Tropical Medicine of Rio Grande do Norte, 655 Passeio dos Girassois, Natal, RN, 59078190, Brazil
| | | | - Diego Gomes Teixeira
- Institute of Tropical Medicine of Rio Grande do Norte, 655 Passeio dos Girassois, Natal, RN, 59078190, Brazil
| | - Francisco Paulo Freire-Neto
- Institute of Tropical Medicine of Rio Grande do Norte, 655 Passeio dos Girassois, Natal, RN, 59078190, Brazil
| | - Leo Zenon Tassi
- Health Sciences Center, Federal University of Rio Grande do Norte, Natal, Brazil
- Institute of Tropical Medicine of Rio Grande do Norte, 655 Passeio dos Girassois, Natal, RN, 59078190, Brazil
| | - Leonardo Capistrano Ferreira
- Institute of Tropical Medicine of Rio Grande do Norte, 655 Passeio dos Girassois, Natal, RN, 59078190, Brazil
- Department of Biochemistry, Federal University of Rio Grande do Norte, Natal, Brazil
| | - Mary Edythe Wilson
- Departments of Internal Medicine and Microbiology & Immunology, University of Iowa and the Veterans' Affairs Medical Center, Iowa City, IA, 52242, USA
| | - Josivan Gomes Lima
- Department of Clinical Medicine, Onofre Lopes University Hospital, 620 Nilo Pecanha, Natal, RN, 59013300, Brazil
| | - Selma Maria Bezerra Jeronimo
- Health Sciences Center, Federal University of Rio Grande do Norte, Natal, Brazil.
- Institute of Tropical Medicine of Rio Grande do Norte, 655 Passeio dos Girassois, Natal, RN, 59078190, Brazil.
- Department of Biochemistry, Federal University of Rio Grande do Norte, Natal, Brazil.
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Calvier L, Alexander A, Marckx AT, Kounnas MZ, Durakoglugil M, Herz J. Safety of Anti-Reelin Therapeutic Approaches for Chronic Inflammatory Diseases. Cells 2024; 13:583. [PMID: 38607022 PMCID: PMC11011630 DOI: 10.3390/cells13070583] [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: 02/23/2024] [Revised: 03/18/2024] [Accepted: 03/25/2024] [Indexed: 04/13/2024] Open
Abstract
Reelin, a large extracellular glycoprotein, plays critical roles in neuronal development and synaptic plasticity in the central nervous system (CNS). Recent studies have revealed non-neuronal functions of plasma Reelin in inflammation by promoting endothelial-leukocyte adhesion through its canonical pathway in endothelial cells (via ApoER2 acting on NF-κB), as well as in vascular tone regulation and thrombosis. In this study, we have investigated the safety and efficacy of selectively depleting plasma Reelin as a potential therapeutic strategy for chronic inflammatory diseases. We found that Reelin expression remains stable throughout adulthood and that peripheral anti-Reelin antibody treatment with CR-50 efficiently depletes plasma Reelin without affecting its levels or functionality within the CNS. Notably, this approach preserves essential neuronal functions and synaptic plasticity. Furthermore, in mice induced with experimental autoimmune encephalomyelitis (EAE), selective modulation of endothelial responses by anti-Reelin antibodies reduces pathological leukocyte infiltration without completely abolishing diapedesis. Finally, long-term Reelin depletion under metabolic stress induced by a Western diet did not negatively impact the heart, kidney, or liver, suggesting a favorable safety profile. These findings underscore the promising role of peripheral anti-Reelin therapeutic strategies for autoimmune diseases and conditions where endothelial function is compromised, offering a novel approach that may avoid the immunosuppressive side effects associated with conventional anti-inflammatory therapies.
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Affiliation(s)
- Laurent Calvier
- Department of Molecular Genetics, University of Texas (UT) Southwestern Medical Center, Dallas, TX 75390, USA (A.T.M.); (M.D.); (J.H.)
- Center for Translational Neurodegeneration Research, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Anna Alexander
- Department of Molecular Genetics, University of Texas (UT) Southwestern Medical Center, Dallas, TX 75390, USA (A.T.M.); (M.D.); (J.H.)
- Center for Translational Neurodegeneration Research, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Austin T. Marckx
- Department of Molecular Genetics, University of Texas (UT) Southwestern Medical Center, Dallas, TX 75390, USA (A.T.M.); (M.D.); (J.H.)
- Center for Translational Neurodegeneration Research, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | | | - Murat Durakoglugil
- Department of Molecular Genetics, University of Texas (UT) Southwestern Medical Center, Dallas, TX 75390, USA (A.T.M.); (M.D.); (J.H.)
- Center for Translational Neurodegeneration Research, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Joachim Herz
- Department of Molecular Genetics, University of Texas (UT) Southwestern Medical Center, Dallas, TX 75390, USA (A.T.M.); (M.D.); (J.H.)
- Center for Translational Neurodegeneration Research, UT Southwestern Medical Center, Dallas, TX 75390, USA
- Department of Neuroscience, UT Southwestern Medical Center, Dallas, TX 75390, USA
- Department of Neurology and Neurotherapeutics, UT Southwestern Medical Center, Dallas, TX 75390, USA
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Heydari B, Mashayekhi F, Kashani MHG. Effect of in ovo feeding of folic acid on Disabled-1 and gga-miR-182-5p expression in the cerebral cortex of chick embryo. J Anim Physiol Anim Nutr (Berl) 2024; 108:285-290. [PMID: 37814386 DOI: 10.1111/jpn.13889] [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: 06/09/2023] [Revised: 09/19/2023] [Accepted: 09/27/2023] [Indexed: 10/11/2023]
Abstract
Folate (vitamin B9) has been shown to reduce the prevalence of neural tube defects (NTDs). Many genes comprising Disabled-1 (DAB1) and miRNAs have been shown to play important role in normal brain development. Reelin-signalling has been shown to play key role in regulating of neuronal migration during brain development. The aim of this study was to evaluate the effects of in ovo administration of folic acid (FA) on DAB1 and gga-miR-182-5p expression in the cerebral cortex of chick embryo. A total number of 30 hatching eggs were used in this study. The number of 10 eggs were injected into the yolk sac with FA (150 µg/egg), 10 eggs by normal saline (sham group) on embryonic day 11 and 10 eggs were left without injection as control. Then the cerebral cortices were collected on E19 and the expression of DAB1 and gga-miR-182-5p was studied by Real-Time PCR. The results showed that DAB1 expression in the cerebral cortex of FA-treated, sham and control were 2.51 ± 0.13, 1.01 ± 0.04 and 1.03 ± 0.04 fold changes, respectively, and this amount for gga-miR-182-5p were 0.54 ± 0.03, 1.09 ± 0.07 and 1.00 ± 0.06-fold change respectively. Statistical analysis showed that there is a significant increase in DAB1 and a decrease in gga-miR-182-5p expression in FA injected cerebral cortex as compared either with either SHAM or control (p < 0.0001). But, no significant change in DAB1 and gga-miR-182-5p expression was observed between sham and the control group (p = 0.99 and p = 0.57 respectively). It is concluded that in ovo feeding of FA increases DAB1 and decreases gga-miR-182-5p expression in the developing chick cerebral cortex.
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Affiliation(s)
- Behnaz Heydari
- Department of Cellular and Molecular Biology, Damghan University, Damghan, Iran
| | - Farhad Mashayekhi
- Department of Biology, Faculty of Sciences, University of Guilan, Rasht, Iran
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6
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Markiewicz R, Markiewicz-Gospodarek A, Borowski B, Trubalski M, Łoza B. Reelin Signaling and Synaptic Plasticity in Schizophrenia. Brain Sci 2023; 13:1704. [PMID: 38137152 PMCID: PMC10741648 DOI: 10.3390/brainsci13121704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/01/2023] [Accepted: 12/05/2023] [Indexed: 12/24/2023] Open
Abstract
Recent research emphasizes the significance of studying the quality of life of schizophrenia patients, considering the complex nature of the illness. Identifying neuronal markers for early diagnosis and treatment is crucial. Reelin (RELN) stands out among these markers, with genetic studies highlighting its role in mental health. Suppression of RELN expression may contribute to cognitive deficits by limiting dendritic proliferation, affecting neurogenesis, and leading to improper neuronal circuits. Although the physiological function of reelin is not fully understood, it plays a vital role in hippocampal cell stratification and neuroglia formation. This analysis explores reelin's importance in the nervous system, shedding light on its impact on mental disorders such as schizophrenia, paving the way for innovative therapeutic approaches, and at the same time, raises the following conclusions: increased methylation levels of the RELN gene in patients with a diagnosis of schizophrenia results in a multiple decrease in the expression of reelin, and monitoring of this indicator, i.e., methylation levels, can be used to monitor the severity of symptoms in the course of schizophrenia.
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Affiliation(s)
- Renata Markiewicz
- Occupational Therapy Laboratory, Chair of Nursing Development, Medical University of Lublin, 4 Staszica St., 20-081 Lublin, Poland;
| | | | - Bartosz Borowski
- Students Scientific Association, Department of Normal, Clinical and Imaging Anatomy, Medical University of Lublin, 20-090 Lublin, Poland; (B.B.); (M.T.)
| | - Mateusz Trubalski
- Students Scientific Association, Department of Normal, Clinical and Imaging Anatomy, Medical University of Lublin, 20-090 Lublin, Poland; (B.B.); (M.T.)
| | - Bartosz Łoza
- Department of Psychiatry, Medical University of Warsaw, 02-091 Warsaw, Poland;
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Gupta T, Kaur M, Gupta M, Singla N, Kharbanda PS, Bansal YS, Radotra BD, Gupta SK. Analysis of distribution and localization of proteins of the reelin signalling pathway in mesial temporal lobe epilepsy. Int J Neurosci 2023:1-15. [PMID: 38060511 DOI: 10.1080/00207454.2023.2292957] [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: 06/07/2022] [Accepted: 12/02/2023] [Indexed: 12/17/2023]
Abstract
INTRODUCTION Granule cell dispersion (GCD) is pathognomonic of hippocampal sclerosis seen in the mesial temporal lobe epilepsy (MTLE). Current animal studies indicate deficiency of Reelin is associated with abnormal granule cell migration leading to GCD. The present study aimed to evaluate complete Reelin signalling pathway to assess whether Reelin deficiency is related to MTLE. MATERIALS AND METHODS Hippocampal sclerosis was confirmed by H and E stain. To explore the amount and cellular location of the Reelin cascade molecules, the hippocampal tissues from MTLE surgery and controls (n = 15 each) were studied using Immuno-histochemistry (IHC). Additionally, confocal imaging was used to validate the IHC findings by co-localization of different proteins. Quantification of IHC images was performed using histo-score and confocal images by Image J software. RESULTS Immune expression of active Reelin was significantly reduced in patients. Reelin receptors were deranged, apolipoprotein E receptor 2 was increased while very low-density lipoprotein receptor was reduced. Disabled-1, a downstream molecule was significantly reduced in MTLE. Its ultimate target, cofilin was thus disinhibited and expressed more in MTLE. Reelin cleaving protease, matrix metalloprotease-9 (MMP-9) and MMP-9 inhibitor, tissue inhibitor of matrix protease-1, showed reduced expression in extracellular matrix. Semi-quantification of immunohistochemistry was done using Histo (H) score. H score of Reelin in diseased patients was 15 against 125 for control patients. These results were validated by confocal fluorescence microscopy. CONCLUSIONS Reelin signalling cascade was deranged in chronic MTLE. Pharmacological manipulation of Reelin cascade can be done at various levels and it may provide novel treatment options for MTLE.
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Affiliation(s)
- Tulika Gupta
- Department of Anatomy, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Mandeep Kaur
- Department of Anatomy, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Mili Gupta
- Department of Biochemistry, Dr. Harvansh Singh Judge Institute of Dental Sciences and Hospital, Panjab University, Chandigarh, India
| | - Navneet Singla
- Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Parampreet S Kharbanda
- Department of Neurology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Yogender S Bansal
- Department of Forensic Medicine, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - B D Radotra
- Department of Histopathology Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - S K Gupta
- Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh, India
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LeVine SM. Examining the Role of a Functional Deficiency of Iron in Lysosomal Storage Disorders with Translational Relevance to Alzheimer's Disease. Cells 2023; 12:2641. [PMID: 37998376 PMCID: PMC10670892 DOI: 10.3390/cells12222641] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 11/09/2023] [Accepted: 11/13/2023] [Indexed: 11/25/2023] Open
Abstract
The recently presented Azalea Hypothesis for Alzheimer's disease asserts that iron becomes sequestered, leading to a functional iron deficiency that contributes to neurodegeneration. Iron sequestration can occur by iron being bound to protein aggregates, such as amyloid β and tau, iron-rich structures not undergoing recycling (e.g., due to disrupted ferritinophagy and impaired mitophagy), and diminished delivery of iron from the lysosome to the cytosol. Reduced iron availability for biochemical reactions causes cells to respond to acquire additional iron, resulting in an elevation in the total iron level within affected brain regions. As the amount of unavailable iron increases, the level of available iron decreases until eventually it is unable to meet cellular demands, which leads to a functional iron deficiency. Normally, the lysosome plays an integral role in cellular iron homeostasis by facilitating both the delivery of iron to the cytosol (e.g., after endocytosis of the iron-transferrin-transferrin receptor complex) and the cellular recycling of iron. During a lysosomal storage disorder, an enzyme deficiency causes undigested substrates to accumulate, causing a sequelae of pathogenic events that may include cellular iron dyshomeostasis. Thus, a functional deficiency of iron may be a pathogenic mechanism occurring within several lysosomal storage diseases and Alzheimer's disease.
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Affiliation(s)
- Steven M LeVine
- Department of Cell Biology and Physiology, University of Kansas Medical Center, Kansas City, KS 66160, USA
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Iakovleva V, Wuestefeld A, Ong ABL, Gao R, Kaya NA, Lee MY, Zhai W, Tam WL, Dan YY, Wuestefeld T. Mfap4: a promising target for enhanced liver regeneration and chronic liver disease treatment. NPJ Regen Med 2023; 8:63. [PMID: 37935709 PMCID: PMC10630300 DOI: 10.1038/s41536-023-00337-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 10/11/2023] [Indexed: 11/09/2023] Open
Abstract
The liver has a remarkable regenerative capacity. Nevertheless, under chronic liver-damaging conditions, this capacity becomes exhausted, allowing the accumulation of fibrotic tissue and leading to end-stage liver disease. Enhancing the endogenous regenerative capacity by targeting regeneration breaks is an innovative therapeutic approach. We set up an in vivo functional genetic screen to identify such regeneration breaks. As the top hit, we identified Microfibril associated protein 4 (Mfap4). Knockdown of Mfap4 in hepatocytes enhances cell proliferation, accelerates liver regeneration, and attenuates chronic liver disease by reducing liver fibrosis. Targeting Mfap4 modulates several liver regeneration-related pathways including mTOR. Our research opens the way to siRNA-based therapeutics to enhance hepatocyte-based liver regeneration.
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Affiliation(s)
- Viktoriia Iakovleva
- Laboratory of In Vivo Genetics and Gene Therapy, Genome Institute of Singapore, Agency for Science, Technology and Research (A*STAR), 60 Biopolis Street, Singapore, 138672, Republic of Singapore
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 119228, Republic of Singapore
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, 117599, Republic of Singapore
| | - Anna Wuestefeld
- Laboratory of In Vivo Genetics and Gene Therapy, Genome Institute of Singapore, Agency for Science, Technology and Research (A*STAR), 60 Biopolis Street, Singapore, 138672, Republic of Singapore
| | - Agnes Bee Leng Ong
- Laboratory of In Vivo Genetics and Gene Therapy, Genome Institute of Singapore, Agency for Science, Technology and Research (A*STAR), 60 Biopolis Street, Singapore, 138672, Republic of Singapore
| | - Rong Gao
- Laboratory of In Vivo Genetics and Gene Therapy, Genome Institute of Singapore, Agency for Science, Technology and Research (A*STAR), 60 Biopolis Street, Singapore, 138672, Republic of Singapore
| | - Neslihan Arife Kaya
- Laboratory of Translational Cancer Biology, Genome Institute of Singapore, Agency for Science, Technology and Research (A*STAR), 60 Biopolis Street, Singapore, 138672, Republic of Singapore
| | - May Yin Lee
- Laboratory of Translational Cancer Biology, Genome Institute of Singapore, Agency for Science, Technology and Research (A*STAR), 60 Biopolis Street, Singapore, 138672, Republic of Singapore
| | - Weiwei Zhai
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, 100101, Beijing, China
- Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming, 650223, China
| | - Wai Leong Tam
- Laboratory of Translational Cancer Biology, Genome Institute of Singapore, Agency for Science, Technology and Research (A*STAR), 60 Biopolis Street, Singapore, 138672, Republic of Singapore
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, 117599, Republic of Singapore
| | - Yock Young Dan
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 119228, Republic of Singapore
- Division of Gastroenterology and Hepatology, National University Health System, Singapore, 119074, Republic of Singapore
| | - Torsten Wuestefeld
- Laboratory of In Vivo Genetics and Gene Therapy, Genome Institute of Singapore, Agency for Science, Technology and Research (A*STAR), 60 Biopolis Street, Singapore, 138672, Republic of Singapore.
- School of Biological Science, Nanyang University of Singapore, Singapore, 637551, Republic of Singapore.
- National Cancer Centre, Singapore, 169610, Republic of Singapore.
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Bhatia S, Bodenstein D, Cheng AP, Wells PG. Altered Epigenetic Marks and Gene Expression in Fetal Brain, and Postnatal Behavioural Disorders, Following Prenatal Exposure of Ogg1 Knockout Mice to Saline or Ethanol. Cells 2023; 12:2308. [PMID: 37759530 PMCID: PMC10527575 DOI: 10.3390/cells12182308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 09/12/2023] [Accepted: 09/13/2023] [Indexed: 09/29/2023] Open
Abstract
Oxoguanine glycosylase 1 (OGG1) is widely known to repair the reactive oxygen species (ROS)-initiated DNA lesion 8-oxoguanine (8-oxoG), and more recently was shown to act as an epigenetic modifier. We have previously shown that saline-exposed Ogg1 -/- knockout progeny exhibited learning and memory deficits, which were enhanced by in utero exposure to a single low dose of ethanol (EtOH) in both Ogg1 +/+ and -/- progeny, but more so in Ogg1 -/- progeny. Herein, OGG1-deficient progeny exposed in utero to a single low dose of EtOH or its saline vehicle exhibited OGG1- and/or EtOH-dependent alterations in global histone methylation and acetylation, DNA methylation and gene expression (Tet1 (Tet Methylcytosine Dioxygenase 1), Nlgn3 (Neuroligin 3), Hdac2 (Histone Deacetylase 2), Reln (Reelin) and Esr1 (Estrogen Receptor 1)) in fetal brains, and behavioural changes in open field activity, social interaction and ultrasonic vocalization, but not prepulse inhibition. OGG1- and EtOH-dependent changes in Esr1 and Esr2 mRNA and protein levels were sex-dependent, as was the association of Esr1 gene expression with gene activation mark histone H3 lysine 4 trimethylation (H3K4me3) and gene repression mark histone H3 lysine 27 trimethylation (H3K27me3) measured via ChIP-qPCR. The OGG1-dependent changes in global epigenetic marks and gene/protein expression in fetal brains, and postnatal behavioural changes, observed in both saline- and EtOH-exposed progeny, suggest the involvement of epigenetic mechanisms in developmental disorders mediated by 8-oxoG and/or OGG1. Epigenetic effects of OGG1 may be involved in ESR1-mediated gene regulation, which may be altered by physiological and EtOH-enhanced levels of ROS formation, possibly contributing to sex-dependent developmental disorders observed in Ogg1 knockout mice. The OGG1- and EtOH-dependent associations provide a basis for more comprehensive mechanistic studies to determine the causal involvement of oxidative DNA damage and epigenetic changes in ROS-mediated neurodevelopmental disorders.
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Affiliation(s)
- Shama Bhatia
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, University of Toronto, Toronto, ON M5S 3M2, Canada; (S.B.); (A.P.C.)
- Centre for Pharmaceutical Oncology, Faculty of Pharmacy, University of Toronto, Toronto, ON M5S 3M2, Canada
| | - David Bodenstein
- Department of Pharmacology & Toxicology, Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada;
| | - Ashley P. Cheng
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, University of Toronto, Toronto, ON M5S 3M2, Canada; (S.B.); (A.P.C.)
- Centre for Pharmaceutical Oncology, Faculty of Pharmacy, University of Toronto, Toronto, ON M5S 3M2, Canada
| | - Peter G. Wells
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, University of Toronto, Toronto, ON M5S 3M2, Canada; (S.B.); (A.P.C.)
- Centre for Pharmaceutical Oncology, Faculty of Pharmacy, University of Toronto, Toronto, ON M5S 3M2, Canada
- Department of Pharmacology & Toxicology, Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada;
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11
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Chau DDL, Ng LLH, Zhai Y, Lau KF. Amyloid precursor protein and its interacting proteins in neurodevelopment. Biochem Soc Trans 2023; 51:1647-1659. [PMID: 37387352 PMCID: PMC10629809 DOI: 10.1042/bst20221527] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 06/22/2023] [Accepted: 06/26/2023] [Indexed: 07/01/2023]
Abstract
Amyloid precursor protein (APP) is a key molecule in the pathogenesis of Alzheimer's disease (AD) as the pathogenic amyloid-β peptide is derived from it. Two closely related APP family proteins (APPs) have also been identified in mammals. Current knowledge, including genetic analyses of gain- and loss-of-function mutants, highlights the importance of APPs in various physiological functions. Notably, APPs consist of multiple extracellular and intracellular protein-binding regions/domains. Protein-protein interactions are crucial for many cellular processes. In past decades, many APPs interactors have been identified which assist the revelation of the putative roles of APPs. Importantly, some of these interactors have been shown to influence several APPs-mediated neuronal processes which are found defective in AD and other neurodegenerative disorders. Studying APPs-interactor complexes would not only advance our understanding of the physiological roles of APPs but also provide further insights into the association of these processes to neurodegeneration, which may lead to the development of novel therapies. In this mini-review, we summarize the roles of APPs-interactor complexes in neurodevelopmental processes including neurogenesis, neurite outgrowth, axonal guidance and synaptogenesis.
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Affiliation(s)
- Dennis Dik-Long Chau
- School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Laura Lok-Haang Ng
- School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Yuqi Zhai
- School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Kwok-Fai Lau
- School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Hong Kong SAR, China
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12
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Johnston JN, Allen J, Shkolnikov I, Sanchez-Lafuente CL, Reive BS, Scheil K, Liang S, Christie BR, Kalynchuk LE, Caruncho HJ. Reelin Rescues Behavioral, Electrophysiological, and Molecular Metrics of a Chronic Stress Phenotype in a Similar Manner to Ketamine. eNeuro 2023; 10:ENEURO.0106-23.2023. [PMID: 37550058 PMCID: PMC10431216 DOI: 10.1523/eneuro.0106-23.2023] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 05/24/2023] [Accepted: 06/20/2023] [Indexed: 08/09/2023] Open
Abstract
Over the past decade, ketamine, an NMDA receptor antagonist, has demonstrated fast-acting antidepressant effects previously unseen with monoaminergic-based therapeutics. Concerns regarding psychotomimetic effects limit the use of ketamine for certain patient populations. Reelin, an extracellular matrix glycoprotein, has shown promise as a putative fast-acting antidepressant in a model of chronic stress. However, research has not yet demonstrated the changes that occur rapidly after peripheral reelin administration. To address this key gap in knowledge, male Long-Evans rats underwent a chronic corticosterone (CORT; or vehicle) paradigm (40 mg/kg, 21 d). On day 21, rats were then administered an acute dose of ketamine (10 mg/kg, i.p.), reelin (3 µg, i.v.), or vehicle. Twenty-four hours after administration, rats underwent behavioral or in vivo electrophysiological testing before killing. Immunohistochemistry was used to confirm changes in hippocampal reelin immunoreactivity. Lastly, the hippocampus was microdissected from fresh tissue to ascertain whole cell and synaptic-specific changes in protein expression through Western blotting. Chronic corticosterone induced a chronic stress phenotype in the forced swim test and sucrose preference test (SPT). Both reelin and ketamine rescued immobility and swimming, however reelin alone rescued latency to immobility. In vivo electrophysiology revealed decreases in hippocampal long-term potentiation (LTP) after chronic stress which was increased significantly by both ketamine and reelin. Reelin immunoreactivity in the dentate gyrus paralleled the behavioral and electrophysiological findings, but no significant changes were observed in synaptic-level protein expression. This exploratory research supports the putative rapid-acting antidepressant effects of an acute dose of reelin across behavioral, electrophysiological, and molecular measures.
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Affiliation(s)
- Jenessa N Johnston
- Division of Medical Sciences, University of Victoria, Victoria, British Columbia V8P 5C2, Canada
| | - Josh Allen
- Division of Medical Sciences, University of Victoria, Victoria, British Columbia V8P 5C2, Canada
| | - Irene Shkolnikov
- Division of Medical Sciences, University of Victoria, Victoria, British Columbia V8P 5C2, Canada
| | - Carla L Sanchez-Lafuente
- Division of Medical Sciences, University of Victoria, Victoria, British Columbia V8P 5C2, Canada
| | - Brady S Reive
- Division of Medical Sciences, University of Victoria, Victoria, British Columbia V8P 5C2, Canada
| | - Kaylene Scheil
- Division of Medical Sciences, University of Victoria, Victoria, British Columbia V8P 5C2, Canada
| | - Stanley Liang
- Division of Medical Sciences, University of Victoria, Victoria, British Columbia V8P 5C2, Canada
| | - Brian R Christie
- Division of Medical Sciences, University of Victoria, Victoria, British Columbia V8P 5C2, Canada
| | - Lisa E Kalynchuk
- Division of Medical Sciences, University of Victoria, Victoria, British Columbia V8P 5C2, Canada
| | - Hector J Caruncho
- Division of Medical Sciences, University of Victoria, Victoria, British Columbia V8P 5C2, Canada
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13
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Alexander A, Herz J, Calvier L. Reelin through the years: From brain development to inflammation. Cell Rep 2023; 42:112669. [PMID: 37339050 PMCID: PMC10592530 DOI: 10.1016/j.celrep.2023.112669] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 05/09/2023] [Accepted: 06/02/2023] [Indexed: 06/22/2023] Open
Abstract
Reelin was originally identified as a regulator of neuronal migration and synaptic function, but its non-neuronal functions have received far less attention. Reelin participates in organ development and physiological functions in various tissues, but it is also dysregulated in some diseases. In the cardiovascular system, Reelin is abundant in the blood, where it contributes to platelet adhesion and coagulation, as well as vascular adhesion and permeability of leukocytes. It is a pro-inflammatory and pro-thrombotic factor with important implications for autoinflammatory and autoimmune diseases such as multiple sclerosis, Alzheimer's disease, arthritis, atherosclerosis, or cancer. Mechanistically, Reelin is a large secreted glycoprotein that binds to several membrane receptors, including ApoER2, VLDLR, integrins, and ephrins. Reelin signaling depends on the cell type but mostly involves phosphorylation of NF-κB, PI3K, AKT, or JAK/STAT. This review focuses on non-neuronal functions and the therapeutic potential of Reelin, while highlighting secretion, signaling, and functional similarities between cell types.
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Affiliation(s)
- Anna Alexander
- Department of Molecular Genetics, University of Texas (UT) Southwestern Medical Center, Dallas, TX, USA; Center for Translational Neurodegeneration Research, UT Southwestern Medical Center, Dallas, TX, USA
| | - Joachim Herz
- Department of Molecular Genetics, University of Texas (UT) Southwestern Medical Center, Dallas, TX, USA; Center for Translational Neurodegeneration Research, UT Southwestern Medical Center, Dallas, TX, USA; Department of Neuroscience, UT Southwestern Medical Center, Dallas, TX, USA; Department of Neurology and Neurotherapeutics, UT Southwestern Medical Center, Dallas, TX, USA
| | - Laurent Calvier
- Department of Molecular Genetics, University of Texas (UT) Southwestern Medical Center, Dallas, TX, USA; Center for Translational Neurodegeneration Research, UT Southwestern Medical Center, Dallas, TX, USA.
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14
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Jaggar M, Ghosh S, Janakiraman B, Chatterjee A, Maheshwari M, Dewan V, Hare B, Deb S, Figueiredo D, Duman RS, Vaidya VA. Influence of Chronic Electroconvulsive Seizures on Plasticity-Associated Gene Expression and Perineuronal Nets Within the Hippocampi of Young Adult and Middle-Aged Sprague-Dawley Rats. Int J Neuropsychopharmacol 2023; 26:294-306. [PMID: 36879414 PMCID: PMC10109107 DOI: 10.1093/ijnp/pyad008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 03/01/2023] [Indexed: 03/08/2023] Open
Abstract
BACKGROUND Electroconvulsive seizure therapy is often used in both treatment-resistant and geriatric depression. However, preclinical studies identifying targets of chronic electroconvulsive seizure (ECS) are predominantly focused on animal models in young adulthood. Given that putative transcriptional, neurogenic, and neuroplastic mechanisms implicated in the behavioral effects of chronic ECS themselves exhibit age-dependent modulation, it remains unknown whether the molecular and cellular targets of chronic ECS vary with age. METHODS We subjected young adult (2-3 months) and middle-aged (12-13 months), male Sprague Dawley rats to sham or chronic ECS and assessed for despair-like behavior, hippocampal gene expression, hippocampal neurogenesis, and neuroplastic changes in the extracellular matrix, reelin, and perineuronal net numbers. RESULTS Chronic ECS reduced despair-like behavior at both ages, accompanied by overlapping and unique changes in activity-dependent and trophic factor gene expression. Although chronic ECS had a similar impact on quiescent neural progenitor numbers at both ages, the eventual increase in hippocampal progenitor proliferation was substantially higher in young adulthood. We noted a decline in reelin⁺ cell numbers following chronic ECS only in young adulthood. In contrast, an age-invariant, robust dissolution of perineuronal net numbers that encapsulate parvalbumin⁺ neurons in the hippocampus were observed following chronic ECS. CONCLUSION Our findings indicate that age is a key variable in determining the nature of chronic ECS-evoked molecular and cellular changes in the hippocampus. This raises the intriguing possibility that chronic ECS may recruit distinct, as well as overlapping, mechanisms to drive antidepressant-like behavioral changes in an age-dependent manner.
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Affiliation(s)
- Minal Jaggar
- Department of Biological Sciences, Tata Institute of Fundamental Research, Mumbai, India
| | - Shreya Ghosh
- Department of Biological Sciences, Tata Institute of Fundamental Research, Mumbai, India
| | - Balaganesh Janakiraman
- Department of Biological Sciences, Tata Institute of Fundamental Research, Mumbai, India
| | - Ashmita Chatterjee
- Department of Biological Sciences, Tata Institute of Fundamental Research, Mumbai, India
| | - Megha Maheshwari
- Department of Biological Sciences, Tata Institute of Fundamental Research, Mumbai, India
| | - Vani Dewan
- Department of Biological Sciences, Tata Institute of Fundamental Research, Mumbai, India
| | - Brendan Hare
- Division of Molecular Psychiatry, Department of Psychiatry and Pharmacology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Sukrita Deb
- Department of Biological Sciences, Tata Institute of Fundamental Research, Mumbai, India
| | - Dwight Figueiredo
- Department of Biological Sciences, Tata Institute of Fundamental Research, Mumbai, India
| | - Ronald S Duman
- Division of Molecular Psychiatry, Department of Psychiatry and Pharmacology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Vidita A Vaidya
- Department of Biological Sciences, Tata Institute of Fundamental Research, Mumbai, India
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15
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Xiaoling X, Xinmei L, Shuhua F, Qian Z, Fu G, Qifang J, Lin X, Xiong Y. TRIM40 ameliorates diabetic retinopathy through suppressing inflammation via Reelin/DAB1 signaling disruption: A mechanism by proteasomal degradation of DAB1. Biochem Biophys Res Commun 2023; 664:117-127. [PMID: 37146559 DOI: 10.1016/j.bbrc.2023.04.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Accepted: 04/08/2023] [Indexed: 05/07/2023]
Abstract
Diabetic retinopathy (DR) is a common microvascular complication of diabetes mellitus. Reelin, an extracellular matrix protein, and its effector protein Disabled1 (DAB1) have been linked to cellular events and retinal development. However, whether and how Reelin/DAB1 signaling causes DR remains to be investigated. In our study, significantly increased expression of Reelin, very low density lipoprotein receptor (VLDLR), ApoE receptor 2 (ApoER2) and phosphorylated DAB1 in retinas of streptozotocin (STZ)-induced DR mouse model was observed, along with enhanced expression of proinflammatory factors. Similar results are confirmed in high glucose (HG)-treated human retinal pigment epithelium cell line ARPE-19. Surprisingly, dysregulated tripartite motif-containing 40 (TRIM40), an E3 ubiquitin ligase, is found to be involved in DR progression by bioinformatic analysis. We observe a negative correlation between TRIM40 and p-DAB1 protein expression levels under HG conditions. Importantly, we find that TRIM40 over-expression markedly ameliorates HG-induced p-DAB1, PI3K, p-protein B kinase (AKT) and inflammatory response in HG-treated cells, but dose not affect Reelin expression. Of note, Co-IP and double immunofluorescence identify an interaction between TRIM40 and DAB1. Furthermore, we show that TRIM40 enhances K48-linked polyubiquitination of DAB1, thereby promoting DAB1 degradation. Finally, promoting TRIM40 expression by intravenous injection of the constructed adeno-associated virus (AAV-TRIM40) markedly ameliorates DR phenotypes in STZ-treated mice, as indicated by the decreased blood glucose and glycosylated hemoglobin (HbAlc) levels, and increased hemoglobin contents. Additionally, diabetes-related elevation of acellular capillaries was also meliorated in mice over-expressing TRIM40. The electroretinogram (ERG) deficits were strongly rescued in mice receiving AAV-TRIM40 injection. Moreover, AAV-TRIM40 attenuates the inflammation and p-DAB1 expression in retinal tissues of STZ-treated mice. Collectively, our findings disclose a mechanism through which TRIM40 limits DAB1 stability under physiological conditions and reveals TRIM40 as a potential therapeutic target for the intervention of Reelin/DAB1 signaling, contributing to DR treatment.
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Affiliation(s)
- Xu Xiaoling
- Department of Ophthalmology, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Lan Xinmei
- Department of Ophthalmology, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Fu Shuhua
- Department of Ophthalmology, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Zhang Qian
- Department of Ophthalmology, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Gui Fu
- Department of Ophthalmology, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Jin Qifang
- Department of Ophthalmology, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Xie Lin
- Department of Ophthalmology, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Yu Xiong
- Department of Ophthalmology, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China.
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16
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Takashima K, Okano H, Ojiro R, Tang Q, Takahashi Y, Ozawa S, Zou X, Koyanagi M, Maronpot RR, Yoshida T, Shibutani M. Continuous exposure to alpha-glycosyl isoquercitrin from mid-gestation ameliorates polyinosinic-polycytidylic acid-disrupted hippocampal neurogenesis in rats. J Chem Neuroanat 2023; 128:102219. [PMID: 36572259 DOI: 10.1016/j.jchemneu.2022.102219] [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: 10/21/2022] [Revised: 12/16/2022] [Accepted: 12/16/2022] [Indexed: 12/24/2022]
Abstract
Polyinosinic-polycytidylic acid (PIC) provides a model of developmental neuropathy by inducing maternal immune activation. We investigated the effects of an antioxidant, alpha-glycosyl isoquercitrin (AGIQ), on PIC-induced developmental neuropathy in rats, focusing on postnatal hippocampal neurogenesis. On gestational day 15, PIC at 4 mg/kg body weight was administered to dams intravenously. AGIQ either at 0.25% or 0.5% was administered through the diet to dams from gestational day 10 until weaning on day 21 post-delivery and, thereafter, to offspring until postnatal day 77 (adult stage). At weaning, the numbers of TBR2+ cells and PCNA+ cells in the subgranular zone and reelin+ cells in the dentate gyrus hilus in offspring of dams treated with PIC only were decreased compared with untreated controls. In contrast, 0.5% AGIQ ameliorated these changes and increased the transcript levels of genes related to signaling of reelin (Reln and Vldlr), growth factors (Bdnf, Cntf, Igf1, and Igf1r), and Wnt/β-catenin (Wnt5a, Lrp6, Fzd1, and Fzd3). In adults, AGIQ increased the number of FOS+ granule cells at 0.25% and the transcript levels of NMDA-type glutamate receptor genes, Grin2a and Grin2b, at 0.25% and 0.5%, respectively. These results suggest that mid-gestation PIC treatment decreased the abundance of type-2b neural progenitor cells (NPCs) by reducing NPC proliferation in relation with suppression of reelin signaling at weaning. We suggest that AGIQ ameliorated the PIC-induced suppressed neurogenesis by enhancing reelin, growth factor, and Wnt/β-catenin signaling at weaning to rescue NPC proliferation and increased synaptic plasticity by enhancing glutamatergic signaling via NMDA-type receptors after maturation.
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Affiliation(s)
- Kazumi Takashima
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan.
| | - Hiromu Okano
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan.
| | - Ryota Ojiro
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan.
| | - Qian Tang
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan.
| | - Yasunori Takahashi
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan.
| | - Shunsuke Ozawa
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan.
| | - Xinyu Zou
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan.
| | - Mihoko Koyanagi
- Global Scientific and Regulatory Affairs, San-Ei Gen F.F.I., Inc., 1-1-11 Sanwa-cho, Toyonaka-shi, Osaka 561-8588, Japan.
| | - Robert R Maronpot
- Maronpot Consulting, LLC, 1612 Medfield Road, Raleigh, NC 27607, USA.
| | - Toshinori Yoshida
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan.
| | - Makoto Shibutani
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan; Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan; Institute of Global Innovation Research, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo 183-8509, Japan.
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17
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Kasahara Y, Nakashima H, Nakashima K. Seizure-induced hilar ectopic granule cells in the adult dentate gyrus. Front Neurosci 2023; 17:1150283. [PMID: 36937666 PMCID: PMC10017466 DOI: 10.3389/fnins.2023.1150283] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 02/13/2023] [Indexed: 03/06/2023] Open
Abstract
Epilepsy is a chronic neurological disorder characterized by hypersynchronous spontaneous recurrent seizures, and affects approximately 50 million people worldwide. Cumulative evidence has revealed that epileptogenic insult temporarily increases neurogenesis in the hippocampus; however, a fraction of the newly generated neurons are integrated abnormally into the existing neural circuits. The abnormal neurogenesis, including ectopic localization of newborn neurons in the hilus, formation of abnormal basal dendrites, and disorganization of the apical dendrites, rewires hippocampal neural networks and leads to the development of spontaneous seizures. The central roles of hilar ectopic granule cells in regulating hippocampal excitability have been suggested. In this review, we introduce recent findings about the migration of newborn granule cells to the dentate hilus after seizures and the roles of seizure-induced ectopic granule cells in the epileptic brain. In addition, we delineate possible intrinsic and extrinsic mechanisms underlying this abnormality. Finally, we suggest that the regulation of seizure-induced ectopic cells can be a promising target for epilepsy therapy and provide perspectives on future research directions.
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18
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Yang M, Zhan Y, Hou Z, Wang C, Fan W, Guo T, Li Z, Fang L, Lv S, Li S, Gu C, Ye M, Qin H, Liu Q, Cui X. VLDLR disturbs quiescence of breast cancer stem cells in a ligand-independent function. Front Oncol 2022; 12:887035. [PMID: 36568166 PMCID: PMC9767959 DOI: 10.3389/fonc.2022.887035] [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: 03/01/2022] [Accepted: 11/11/2022] [Indexed: 12/12/2022] Open
Abstract
Breast cancer stem cells are responsible for cancer initiation, progression, and drug resistance. However, effective targeting strategies against the cell subpopulation are still limited. Here, we unveil two splice variants of very-low-density lipoprotein receptor, VLDLR-I and -II, which are highly expressed in breast cancer stem cells. In breast cancer cells, VLDLR silencing suppresses sphere formation abilities in vitro and tumor growth in vivo. We find that VLDLR knockdown induces transition from self-renewal to quiescence. Surprisingly, ligand-binding activity is not involved in the cancer-promoting functions of VLDLR-I and -II. Proteomic analysis reveals that citrate cycle and ribosome biogenesis-related proteins are upregulated in VLDLR-I and -II overexpressed cells, suggesting that VLDLR dysregulation is associated with metabolic and anabolic regulation. Moreover, high expression of VLDLR in breast cancer tissues correlates with poor prognosis of patients. Collectively, these findings indicate that VLDLR may be an important therapeutic target for breast cancer treatment.
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Affiliation(s)
- Mengying Yang
- The First Affiliated Hospital, Dalian Medical University, Dalian, China,Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China,State Key Laboratory of Oncology in South China, Cancer Center, Sun Yat-sen University, Guangzhou, China
| | - Yajing Zhan
- Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China
| | - Zhijie Hou
- Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China
| | - Chunli Wang
- Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China
| | - Wenjun Fan
- Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China
| | - Tao Guo
- The First Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Zhuoshi Li
- The First Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Lei Fang
- The First Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Shasha Lv
- Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China
| | - Sisi Li
- Department of Pathology, Harbin Medical University Cancer Hospital, Harbin, China
| | - Chundong Gu
- The First Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Mingliang Ye
- Chinese Academy of Sciences (CAS) Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian, China
| | - Hongqiang Qin
- Chinese Academy of Sciences (CAS) Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian, China,*Correspondence: Xiaonan Cui, ; Quentin Liu, ; Hongqiang Qin,
| | - Quentin Liu
- Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China,State Key Laboratory of Oncology in South China, Cancer Center, Sun Yat-sen University, Guangzhou, China,*Correspondence: Xiaonan Cui, ; Quentin Liu, ; Hongqiang Qin,
| | - Xiaonan Cui
- The First Affiliated Hospital, Dalian Medical University, Dalian, China,*Correspondence: Xiaonan Cui, ; Quentin Liu, ; Hongqiang Qin,
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19
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Sánchez-Lafuente CL, Romay-Tallon R, Allen J, Johnston JN, Kalynchuk LE, Caruncho HJ. Sex differences in basal reelin levels in the paraventricular hypothalamus and in response to chronic stress induced by repeated corticosterone in rats. Horm Behav 2022; 146:105267. [PMID: 36274499 DOI: 10.1016/j.yhbeh.2022.105267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 09/21/2022] [Accepted: 09/24/2022] [Indexed: 11/04/2022]
Abstract
Repeated exposure to the stress hormone corticosterone results in depressive-like behaviours paralleled by the downregulation of hippocampal reelin expression. Reelin is expressed in key neural populations involved in the stress response, but whether its hypothalamic expression is sex-specific or involved in sex-specific vulnerability to stress is unknown. Female and male rats were treated with either daily vehicle or corticosterone injections (40 mg/kg) for 21 days. Thereafter, they were subjected to several behavioural tasks before being sacrificed to allow the analysis of reelin expression in hypothalamic nuclei. The basal density of reelin-positive cells in males was significantly higher in the paraventricular nucleus (19 %) and in the medial preoptic area (51 %) compared to females. Chronic corticosterone injections increased the immobility time in the forced swim test in males (107 %) and females (108 %) and decreased the exploration of the elevated plus maze in males (34 %). Corticosterone also caused a significant decrease in the density of reelin-positive cells in males, in both ventrodorsal (37 %) and ventrolateral (32 %) subdivisions of the paraventricular nucleus, while not affecting females. Moreover, in the paraventricular nucleus of males, 30 % of the basal reelin-positive cells co-expressed oxytocin while only 17.5 % did in females, showing a positive correlation between reelin and oxytocin levels. Chronic corticosterone did not significantly affect co-localization levels. For the first time, this study shows that there is a sexually dimorphic subpopulation of reelin-positive neurons in the paraventricular nucleus that can be differentially affected by chronic stress.
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Affiliation(s)
| | | | - Josh Allen
- Division of Medical Sciences, University of Victoria, Victoria, BC, Canada
| | - Jenessa N Johnston
- Division of Medical Sciences, University of Victoria, Victoria, BC, Canada
| | - Lisa E Kalynchuk
- Division of Medical Sciences, University of Victoria, Victoria, BC, Canada
| | - Hector J Caruncho
- Division of Medical Sciences, University of Victoria, Victoria, BC, Canada.
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20
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Bracher-Smith M, Leonenko G, Baker E, Crawford K, Graham AC, Salih DA, Howell BW, Hardy J, Escott-Price V. Whole genome analysis in APOE4 homozygotes identifies the DAB1-RELN pathway in Alzheimer's disease pathogenesis. Neurobiol Aging 2022; 119:67-76. [PMID: 35977442 PMCID: PMC9548409 DOI: 10.1016/j.neurobiolaging.2022.07.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 07/04/2022] [Accepted: 07/23/2022] [Indexed: 11/20/2022]
Abstract
The APOE-ε4 allele is known to predispose to amyloid deposition and consequently is strongly associated with Alzheimer's disease (AD) risk. There is debate as to whether the APOE gene accounts for all genetic variation of the APOE locus. Another question which remains is whether APOE-ε4 carriers have other genetic factors influencing the progression of amyloid positive individuals to AD. We conducted a genome-wide association study in a sample of 5,390 APOE-ε4 homozygous (ε4ε4) individuals (288 cases and 5102 controls) aged 65 or over in the UK Biobank. We found no significant associations of SNPs in the APOE locus with AD in the sample of ε4ε4 individuals. However, we identified a novel genome-wide significant locus associated to AD, mapping to DAB1 (rs112437613, OR = 2.28, CI = 1.73-3.01, p = 5.4 × 10-9). This identification of DAB1 led us to investigate other components of the DAB1-RELN pathway for association. Analysis of the DAB1-RELN pathway indicated that the pathway itself was associated with AD, therefore suggesting an epistatic interaction between the APOE locus and the DAB1-RELN pathway.
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Affiliation(s)
- Matthew Bracher-Smith
- Division of Psychological Medicine & Clinical Neurosciences, Cardiff University, Cardiff, UK; Dementia Research Institute, Cardiff University, Cardiff, UK
| | - Ganna Leonenko
- Dementia Research Institute, Cardiff University, Cardiff, UK
| | - Emily Baker
- Dementia Research Institute, Cardiff University, Cardiff, UK
| | - Karen Crawford
- Division of Psychological Medicine & Clinical Neurosciences, Cardiff University, Cardiff, UK
| | | | - Dervis A Salih
- Dementia Research Institute, University College London, UK
| | - Brian W Howell
- Neuroscience and Physiology, State University of New York, Albany, NY, USA
| | - John Hardy
- Dementia Research Institute, University College London, UK.
| | - Valentina Escott-Price
- Division of Psychological Medicine & Clinical Neurosciences, Cardiff University, Cardiff, UK.
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21
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Jin K, Zhang S, Jiang C, Liu R, Chen B, Zhao H, Zhang Q, Shen Z, Xu P, Hu X, Jiao J, Lu J, Huang M. The role of reelin in the pathological mechanism of depression from clinical to rodents. Psychiatry Res 2022; 317:114838. [PMID: 36103758 DOI: 10.1016/j.psychres.2022.114838] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 08/13/2022] [Accepted: 09/04/2022] [Indexed: 01/04/2023]
Abstract
Major depressive disorder (MDD) is a devastating mental illness and the leading cause of disability worldwide. Previous studies have suggested that synaptic plasticity in the hippocampus plays an important role in depression pathogenesis. Reelin is expressed mainly in the frontal lobe and hippocampus, and is closely associated with neurodevelopment and synaptic plasticity. However, few studies have investigated its role in MDD combining clinical trials and animal experiments. We show that in a clinical trial, plasma reelin levels decreased in patients with first-episode drug-naïve MDD and increased after treatment; further, plasma reelin levels allowed to distinguish drug-naïve patients with first-episode MDD from healthy individuals. In rats, chronic mild and unpredictable stress led to a decrease in both reelin mRNA and protein levels in the hippocampus, which could be reversed by vortioxetine. Subsequent experiments confirmed that the reelin-ApoER2-NR2A /NR2B pathway regulates hippocampal synaptic plasticity and may be involved in depression or antidepressant responses. Our work contributes to a deeper understanding of MDD pathogenesis and provides new evidence that reelin should be considered a potential therapeutic target for MDD.
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Affiliation(s)
- Kangyu Jin
- Department of Psychiatry, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; The Key Laboratory of Mental Disorder Management in Zhejiang Province, Hangzhou 310003, China
| | - Shiyi Zhang
- Department of Psychiatry, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; The Key Laboratory of Mental Disorder Management in Zhejiang Province, Hangzhou 310003, China
| | - Chaonan Jiang
- Department of Psychiatry, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; The Key Laboratory of Mental Disorder Management in Zhejiang Province, Hangzhou 310003, China
| | - Ripeng Liu
- College of First Clinical College, Zhejiang Chinese Medical University, 548 Binwen Road, Binjiang District, Hangzhou 310053, China
| | - Bing Chen
- Department of Psychiatry, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; The Key Laboratory of Mental Disorder Management in Zhejiang Province, Hangzhou 310003, China
| | - Haoyang Zhao
- Department of Psychiatry, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; The Key Laboratory of Mental Disorder Management in Zhejiang Province, Hangzhou 310003, China
| | - Qin Zhang
- College of First Clinical College, Zhejiang Chinese Medical University, 548 Binwen Road, Binjiang District, Hangzhou 310053, China
| | - Zhe Shen
- Department of Child Psychology, The Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310003, China
| | - Pengfeng Xu
- Department of Psychiatry, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; The Key Laboratory of Mental Disorder Management in Zhejiang Province, Hangzhou 310003, China
| | - Xiaohan Hu
- Department of Psychiatry, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; The Key Laboratory of Mental Disorder Management in Zhejiang Province, Hangzhou 310003, China
| | - Jianping Jiao
- Department of Psychiatry, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; The Key Laboratory of Mental Disorder Management in Zhejiang Province, Hangzhou 310003, China
| | - Jing Lu
- Department of Psychiatry, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; The Key Laboratory of Mental Disorder Management in Zhejiang Province, Hangzhou 310003, China.
| | - Manli Huang
- Department of Psychiatry, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; The Key Laboratory of Mental Disorder Management in Zhejiang Province, Hangzhou 310003, China.
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22
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Battaglin F, Jayachandran P, Strelez C, Lenz A, Algaze S, Soni S, Lo JH, Yang Y, Millstein J, Zhang W, Roussos Torres ET, Shih JC, Mumenthaler SM, Neman J, Lenz HJ. Neurotransmitter signaling: a new frontier in colorectal cancer biology and treatment. Oncogene 2022; 41:4769-4778. [PMID: 36182970 PMCID: PMC10591256 DOI: 10.1038/s41388-022-02479-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/16/2022] [Accepted: 09/20/2022] [Indexed: 11/08/2022]
Abstract
The brain-gut axis, a bidirectional network between the central and enteric nervous system, plays a critical role in modulating the gastrointestinal tract function and homeostasis. Recently, increasing evidence suggests that neuronal signaling molecules can promote gastrointestinal cancers, however, the mechanisms remain unclear. Aberrant expression of neurotransmitter signaling genes in colorectal cancer supports the role of neurotransmitters to stimulate tumor growth and metastatic spread by promoting cell proliferation, migration, invasion, and angiogenesis. In addition, neurotransmitters can interact with immune and endothelial cells in the tumor microenvironment to promote inflammation and tumor progression. As such, pharmacological targeting of neurotransmitter signaling represent a promising novel anticancer approach. Here, we present an overview of the current evidence supporting the role of neurotransmitters in colorectal cancer biology and treatment.
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Affiliation(s)
- Francesca Battaglin
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Priya Jayachandran
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Carly Strelez
- Lawrence J. Ellison Institute for Transformative Medicine, Los Angeles, CA, USA
| | - Annika Lenz
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Sandra Algaze
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Shivani Soni
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Jae Ho Lo
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Yan Yang
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Joshua Millstein
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Wu Zhang
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Evanthia T Roussos Torres
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Jean C Shih
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA, USA
| | - Shannon M Mumenthaler
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
- Lawrence J. Ellison Institute for Transformative Medicine, Los Angeles, CA, USA
- Department of Biomedical Engineering, Viterbi School of Engineering, University of Southern California, Los Angeles, CA, USA
| | - Josh Neman
- Department of Neurological Surgery, USC Brain Tumor Center, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Heinz-Josef Lenz
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.
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23
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Di Donato N, Guerrini R, Billington CJ, Barkovich AJ, Dinkel P, Freri E, Heide M, Gershon ES, Gertler TS, Hopkin RJ, Jacob S, Keedy SK, Kooshavar D, Lockhart PJ, Lohmann DR, Mahmoud IG, Parrini E, Schrock E, Severi G, Timms AE, Webster RI, Willis MJH, Zaki MS, Gleeson JG, Leventer RJ, Dobyns WB. Monoallelic and biallelic mutations in RELN underlie a graded series of neurodevelopmental disorders. Brain 2022; 145:3274-3287. [PMID: 35769015 PMCID: PMC9989350 DOI: 10.1093/brain/awac164] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 04/02/2022] [Accepted: 04/19/2022] [Indexed: 11/14/2022] Open
Abstract
Reelin, a large extracellular protein, plays several critical roles in brain development and function. It is encoded by RELN, first identified as the gene disrupted in the reeler mouse, a classic neurological mutant exhibiting ataxia, tremors and a 'reeling' gait. In humans, biallelic variants in RELN have been associated with a recessive lissencephaly variant with cerebellar hypoplasia, which matches well with the homozygous mouse mutant that has abnormal cortical structure, small hippocampi and severe cerebellar hypoplasia. Despite the large size of the gene, only 11 individuals with RELN-related lissencephaly with cerebellar hypoplasia from six families have previously been reported. Heterozygous carriers in these families were briefly reported as unaffected, although putative loss-of-function variants are practically absent in the population (probability of loss of function intolerance = 1). Here we present data on seven individuals from four families with biallelic and 13 individuals from seven families with monoallelic (heterozygous) variants of RELN and frontotemporal or temporal-predominant lissencephaly variant. Some individuals with monoallelic variants have moderate frontotemporal lissencephaly, but with normal cerebellar structure and intellectual disability with severe behavioural dysfunction. However, one adult had abnormal MRI with normal intelligence and neurological profile. Thorough literature analysis supports a causal role for monoallelic RELN variants in four seemingly distinct phenotypes including frontotemporal lissencephaly, epilepsy, autism and probably schizophrenia. Notably, we observed a significantly higher proportion of loss-of-function variants in the biallelic compared to the monoallelic cohort, where the variant spectrum included missense and splice-site variants. We assessed the impact of two canonical splice-site variants observed as biallelic or monoallelic variants in individuals with moderately affected or normal cerebellum and demonstrated exon skipping causing in-frame loss of 46 or 52 amino acids in the central RELN domain. Previously reported functional studies demonstrated severe reduction in overall RELN secretion caused by heterozygous missense variants p.Cys539Arg and p.Arg3207Cys associated with lissencephaly suggesting a dominant-negative effect. We conclude that biallelic variants resulting in complete absence of RELN expression are associated with a consistent and severe phenotype that includes cerebellar hypoplasia. However, reduced expression of RELN remains sufficient to maintain nearly normal cerebellar structure. Monoallelic variants are associated with incomplete penetrance and variable expressivity even within the same family and may have dominant-negative effects. Reduced RELN secretion in heterozygous individuals affects only cortical structure whereas the cerebellum remains intact. Our data expand the spectrum of RELN-related neurodevelopmental disorders ranging from lethal brain malformations to adult phenotypes with normal brain imaging.
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Affiliation(s)
- Nataliya Di Donato
- Institute for Clinical Genetics, University Hospital, TU Dresden, 01307 Dresden, Germany
| | - Renzo Guerrini
- Pediatric Neurology, Neurogenetics and Neurobiology Unit and Laboratories, Meyer Children's Hospital, University of Florence, 50139 Florence, Italy
| | - Charles J Billington
- Department of Pediatrics, Division of Genetics and Metabolism, University of Minnesota, Minneapolis, MN 55454, USA
| | - A James Barkovich
- Departments of Radiology and Biomedical Imaging, Neurology, Pediatrics, and Neurosurgery, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Philine Dinkel
- Institute for Clinical Genetics, University Hospital, TU Dresden, 01307 Dresden, Germany
| | - Elena Freri
- Department of Pediatric Neuroscience, Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milan, Italy
| | - Michael Heide
- Max Planck Institute of Molecular Cell Biology and Genetics, 01307 Dresden, Germany
- German Primate Center, Leibniz Institute for Primate Research, 37077 Goettingen, Germany
| | - Elliot S Gershon
- Department of Human Genetics, The University of Chicago, Chicago, IL 60637, USA
- Department of Psychiatry and Behavioral Neuroscience, The University of Chicago, Chicago, IL 60637, USA
| | - Tracy S Gertler
- Division of Neurology, Department of Pediatrics, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, IL 60611, USA
| | - Robert J Hopkin
- Cincinnati Children's Hospital Medical Center and University of Cincinnati College of Medicine, Department of Pediatrics, Division of Human Genetics, Cincinnati, OH 45229, USA
| | - Suma Jacob
- Department of Psychiatry, University of Minnesota, Minneapolis, MN 55454, USA
| | - Sarah K Keedy
- Department of Psychiatry and Behavioral Neuroscience, The University of Chicago, Chicago, IL 60637, USA
| | - Daniz Kooshavar
- Bruce Lefory Centre, Murdoch Children's Research Institute and University of Melbourne Department of Pediatrics, Melbourne 3052, Australia
| | - Paul J Lockhart
- Bruce Lefory Centre, Murdoch Children's Research Institute and University of Melbourne Department of Pediatrics, Melbourne 3052, Australia
| | - Dietmar R Lohmann
- Institut fur Humangenetik, Universitatsklinikum Essen, 45147 Essen, Germany
| | - Iman G Mahmoud
- Pediatric Neurology Department, Cairo University Children's Hospital, Cairo, Egypt
| | - Elena Parrini
- Pediatric Neurology, Neurogenetics and Neurobiology Unit and Laboratories, Meyer Children's Hospital, University of Florence, 50139 Florence, Italy
| | - Evelin Schrock
- Institute for Clinical Genetics, University Hospital, TU Dresden, 01307 Dresden, Germany
| | - Giulia Severi
- Medical Genetics Unit, S. Orsola-Malpighi Hospital, 40138 Bologna, Italy
| | - Andrew E Timms
- Center for Developmental Biology and Regenerative Medicine, Seattle Children's Research Institute, Seattle, WA 98101, USA
| | - Richard I Webster
- T. Y. Nelson Department of Neurology and Neurosurgery, The Children's Hospital at Westmead, Sydney 2145, Australia
| | - Mary J H Willis
- Uniformed Services University School of Medicine and Naval Medical Center, Department of Pediatrics, San Diego, CA 92134, USA
| | - Maha S Zaki
- Pediatric Neurology Department, Cairo University Children's Hospital, Cairo, Egypt
- Clinical Genetics Department, Human Genetics and Genome Research Division, National Research Centre, Cairo Governorate 12622, Egypt
| | - Joseph G Gleeson
- Department of Neurosciences, Howard Hughes Medical Institute, University of California, San Diego, La Jolla, CA 92093, USA
| | - Richard J Leventer
- Department of Neurology, Royal Children's Hospital, Murdoch Children's Research Institute and University of Melbourne Department of Pediatrics, Melbourne 3052, Australia
| | - William B Dobyns
- Department of Pediatrics, Division of Genetics and Metabolism, University of Minnesota, Minneapolis, MN 55454, USA
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24
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Nicholson JL, Toh P, Alfulaij N, Berry MJ, Torres DJ. New insights on selenoproteins and neuronal function. Free Radic Biol Med 2022; 190:55-61. [PMID: 35948259 DOI: 10.1016/j.freeradbiomed.2022.07.021] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 06/17/2022] [Accepted: 07/26/2022] [Indexed: 10/15/2022]
Abstract
Fifty years have passed since the discovery of the first selenoprotein by Rotruck and colleagues. In that time, the essential nature of selenium has come to light including the dependence of the brain on selenium to function properly. Animal models have shown that a lack of certain selenoproteins in the brain is detrimental for neuronal health, sometimes leading to neurodegeneration. There is also potential for selenoprotein-mediated redox balance to impact neuronal activity, including neurotransmission. Important insights on these topics have been gained over the past several years. This review briefly summarizes the known roles of specific selenoproteins in the brain while highlighting recent advancements regarding selenoproteins in neuronal function. Hypothetical models of selenoprotein function and emerging topics in the field are also provided.
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Affiliation(s)
- Jessica L Nicholson
- Department of Cell & Molecular Biology, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, HI, 96813, USA; Pacific Biosciences Research Center, School of Ocean and Earth Science and Technology, University of Hawaii at Manoa, Honolulu, HI, 96822, USA.
| | - Pamela Toh
- Pacific Biosciences Research Center, School of Ocean and Earth Science and Technology, University of Hawaii at Manoa, Honolulu, HI, 96822, USA.
| | - Naghum Alfulaij
- Pacific Biosciences Research Center, School of Ocean and Earth Science and Technology, University of Hawaii at Manoa, Honolulu, HI, 96822, USA.
| | - Marla J Berry
- Pacific Biosciences Research Center, School of Ocean and Earth Science and Technology, University of Hawaii at Manoa, Honolulu, HI, 96822, USA.
| | - Daniel J Torres
- Pacific Biosciences Research Center, School of Ocean and Earth Science and Technology, University of Hawaii at Manoa, Honolulu, HI, 96822, USA.
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25
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Ardalan M, Chumak T, Quist A, Hermans E, Hoseinpoor Rafati A, Gravina G, Jabbari Shiadeh SM, Svedin P, Alabaf S, Hansen B, Wegener G, Westberg L, Mallard C. Reelin cells and sex-dependent synaptopathology in autism following postnatal immune activation. Br J Pharmacol 2022; 179:4400-4422. [PMID: 35474185 PMCID: PMC9545289 DOI: 10.1111/bph.15859] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 04/07/2022] [Accepted: 04/10/2022] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND AND PURPOSE Autism spectrum disorders (ASD) are heterogeneous neurodevelopmental disorders with considerably increased risk in male infants born preterm and with neonatal infection. Here, we investigated the role of postnatal immune activation on hippocampal synaptopathology by targeting Reelin+ cells in mice with ASD-like behaviours. EXPERIMENTAL APPROACH C57/Bl6 mouse pups of both sexes received lipopolysaccharide (LPS, 1 mg·kg-1 ) on postnatal day (P) 5. At P45, animal behaviour was examined by marble burying and sociability test, followed by ex vivo brain MRI diffusion kurtosis imaging (DKI). Hippocampal synaptogenesis, number and morphology of Reelin+ cells, and mRNA expression of trans-synaptic genes, including neurexin-3, neuroligin-1, and cell-adhesion molecule nectin-1, were analysed at P12 and P45. KEY RESULTS Social withdrawal and increased stereotypic activities in males were related to increased mean diffusivity on MRI-DKI and overgrowth in hippocampus together with retention of long-thin immature synapses on apical dendrites, decreased volume and number of Reelin+ cells as well as reduced expression of trans-synaptic and cell-adhesion molecules. CONCLUSION AND IMPLICATIONS The study provides new insights into sex-dependent mechanisms that may underlie ASD-like behaviour in males following postnatal immune activation. We identify GABAergic interneurons as core components of dysmaturation of excitatory synapses in the hippocampus following postnatal infection and provide cellular and molecular substrates for the MRI findings with translational value.
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Affiliation(s)
- Maryam Ardalan
- Department of Physiology, Institute of Neuroscience and Physiology, Sahlgrenska AcademyUniversity of GothenburgGothenburgSweden
- Department of Clinical Medicine, Translational Neuropsychiatry UnitAarhus UniversityAarhusDenmark
| | - Tetyana Chumak
- Department of Physiology, Institute of Neuroscience and Physiology, Sahlgrenska AcademyUniversity of GothenburgGothenburgSweden
| | - Alexandra Quist
- Department of Physiology, Institute of Neuroscience and Physiology, Sahlgrenska AcademyUniversity of GothenburgGothenburgSweden
| | - Eva Hermans
- Department of Physiology, Institute of Neuroscience and Physiology, Sahlgrenska AcademyUniversity of GothenburgGothenburgSweden
- Department of Developmental Origins of Disease, Utrecht Brain Center and Wilhelmina Children's HospitalUtrecht UniversityUtrechtNetherlands
| | - Ali Hoseinpoor Rafati
- Department of Clinical Medicine, Translational Neuropsychiatry UnitAarhus UniversityAarhusDenmark
| | - Giacomo Gravina
- Department of Physiology, Institute of Neuroscience and Physiology, Sahlgrenska AcademyUniversity of GothenburgGothenburgSweden
| | - Seyedeh Marziyeh Jabbari Shiadeh
- Department of Physiology, Institute of Neuroscience and Physiology, Sahlgrenska AcademyUniversity of GothenburgGothenburgSweden
- Department of Clinical Medicine, Translational Neuropsychiatry UnitAarhus UniversityAarhusDenmark
| | - Pernilla Svedin
- Department of Physiology, Institute of Neuroscience and Physiology, Sahlgrenska AcademyUniversity of GothenburgGothenburgSweden
| | - Setareh Alabaf
- Department of Physiology, Institute of Neuroscience and Physiology, Sahlgrenska AcademyUniversity of GothenburgGothenburgSweden
| | - Brian Hansen
- Department of Clinical Medicine, Center of Functionally Integrative Neuroscience‐SKSAarhus UniversityAarhusDenmark
| | - Gregers Wegener
- Department of Clinical Medicine, Translational Neuropsychiatry UnitAarhus UniversityAarhusDenmark
| | - Lars Westberg
- Department of Pharmacology, Institute of Neuroscience and Physiology, Sahlgrenska AcademyUniversity of GothenburgGothenburgSweden
| | - Carina Mallard
- Department of Physiology, Institute of Neuroscience and Physiology, Sahlgrenska AcademyUniversity of GothenburgGothenburgSweden
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26
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Borràs C, Mercer A, Sirisi S, Alcolea D, Escolà-Gil JC, Blanco-Vaca F, Tondo M. HDL-like-Mediated Cell Cholesterol Trafficking in the Central Nervous System and Alzheimer's Disease Pathogenesis. Int J Mol Sci 2022; 23:ijms23169356. [PMID: 36012637 PMCID: PMC9409363 DOI: 10.3390/ijms23169356] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 08/10/2022] [Accepted: 08/18/2022] [Indexed: 01/02/2023] Open
Abstract
The main aim of this work is to review the mechanisms via which high-density lipoprotein (HDL)-mediated cholesterol trafficking through the central nervous system (CNS) occurs in the context of Alzheimer’s disease (AD). Alzheimer’s disease is characterized by the accumulation of extracellular amyloid beta (Aβ) and abnormally hyperphosphorylated intracellular tau filaments in neurons. Cholesterol metabolism has been extensively implicated in the pathogenesis of AD through biological, epidemiological, and genetic studies, with the APOE gene being the most reproducible genetic risk factor for the development of AD. This manuscript explores how HDL-mediated cholesterol is transported in the CNS, with a special emphasis on its relationship to Aβ peptide accumulation and apolipoprotein E (ApoE)-mediated cholesterol transport. Indeed, we reviewed all existing works exploring HDL-like-mediated cholesterol efflux and cholesterol uptake in the context of AD pathogenesis. Existing data seem to point in the direction of decreased cholesterol efflux and the impaired entry of cholesterol into neurons among patients with AD, which could be related to impaired Aβ clearance and tau protein accumulation. However, most of the reviewed studies have been performed in cells that are not physiologically relevant for CNS pathology, representing a major flaw in this field. The ApoE4 genotype seems to be a disruptive element in HDL-like-mediated cholesterol transport through the brain. Overall, further investigations are needed to clarify the role of cholesterol trafficking in AD pathogenesis.
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Affiliation(s)
- Carla Borràs
- Institut d’Investigació Biomèdica Sant Pau (IIB), Sant Quintí 77-79, 08041 Barcelona, Spain
- CIBERDEM, ISCIII, 28029 Madrid, Spain
- Department of Biochemistry and Molecular Biology, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Aina Mercer
- Institut d’Investigació Biomèdica Sant Pau (IIB), Sant Quintí 77-79, 08041 Barcelona, Spain
| | - Sònia Sirisi
- Institut d’Investigació Biomèdica Sant Pau (IIB), Sant Quintí 77-79, 08041 Barcelona, Spain
- Sant Pau Memory Unit, Department of Neurology, Hospital de la Santa Creu i Sant Pau, 08041 Barcelona, Spain
| | - Daniel Alcolea
- Institut d’Investigació Biomèdica Sant Pau (IIB), Sant Quintí 77-79, 08041 Barcelona, Spain
- Sant Pau Memory Unit, Department of Neurology, Hospital de la Santa Creu i Sant Pau, 08041 Barcelona, Spain
- CIBERNED, ISCIII, 28029 Madrid, Spain
| | - Joan Carles Escolà-Gil
- Institut d’Investigació Biomèdica Sant Pau (IIB), Sant Quintí 77-79, 08041 Barcelona, Spain
- CIBERDEM, ISCIII, 28029 Madrid, Spain
- Correspondence: (J.C.E.-G.); (M.T.); Tel.: +34-93-553-7358 (J.C.E.-G. & M.T.)
| | - Francisco Blanco-Vaca
- Institut d’Investigació Biomèdica Sant Pau (IIB), Sant Quintí 77-79, 08041 Barcelona, Spain
- CIBERDEM, ISCIII, 28029 Madrid, Spain
- Department of Biochemistry and Molecular Biology, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
- Department of Biochemistry, Hospital de la Santa Creu i Sant Pau, 08041 Barcelona, Spain
| | - Mireia Tondo
- Institut d’Investigació Biomèdica Sant Pau (IIB), Sant Quintí 77-79, 08041 Barcelona, Spain
- CIBERDEM, ISCIII, 28029 Madrid, Spain
- Department of Biochemistry, Hospital de la Santa Creu i Sant Pau, 08041 Barcelona, Spain
- Correspondence: (J.C.E.-G.); (M.T.); Tel.: +34-93-553-7358 (J.C.E.-G. & M.T.)
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Rare CACNA1H and RELN variants interact through mTORC1 pathway in oligogenic autism spectrum disorder. Transl Psychiatry 2022; 12:234. [PMID: 35668055 PMCID: PMC9170683 DOI: 10.1038/s41398-022-01997-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 05/19/2022] [Accepted: 05/25/2022] [Indexed: 11/09/2022] Open
Abstract
Oligogenic inheritance of autism spectrum disorder (ASD) has been supported by several studies. However, little is known about how the risk variants interact and converge on causative neurobiological pathways. We identified in an ASD proband deleterious compound heterozygous missense variants in the Reelin (RELN) gene, and a de novo splicing variant in the Cav3.2 calcium channel (CACNA1H) gene. Here, by using iPSC-derived neural progenitor cells (NPCs) and a heterologous expression system, we show that the variant in Cav3.2 leads to increased calcium influx into cells, which overactivates mTORC1 pathway and, consequently, further exacerbates the impairment of Reelin signaling. Also, we show that Cav3.2/mTORC1 overactivation induces proliferation of NPCs and that both mutant Cav3.2 and Reelin cause abnormal migration of these cells. Finally, analysis of the sequencing data from two ASD cohorts-a Brazilian cohort of 861 samples, 291 with ASD; the MSSNG cohort of 11,181 samples, 5,102 with ASD-revealed that the co-occurrence of risk variants in both alleles of Reelin pathway genes and in one allele of calcium channel genes confer significant liability for ASD. Our results support the notion that genes with co-occurring deleterious variants tend to have interconnected pathways underlying oligogenic forms of ASD.
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Sánchez-Lafuente CL, Kalynchuk LE, Caruncho HJ, Ausió J. The Role of MeCP2 in Regulating Synaptic Plasticity in the Context of Stress and Depression. Cells 2022; 11:cells11040748. [PMID: 35203405 PMCID: PMC8870391 DOI: 10.3390/cells11040748] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 02/10/2022] [Accepted: 02/16/2022] [Indexed: 02/06/2023] Open
Abstract
Methyl-CpG-binding protein 2 (MeCP2) is a transcriptional regulator that is highly abundant in the brain. It binds to methylated genomic DNA to regulate a range of physiological functions implicated in neuronal development and adult synaptic plasticity. MeCP2 has mainly been studied for its role in neurodevelopmental disorders, but alterations in MeCP2 are also present in stress-related disorders such as major depression. Impairments in both stress regulation and synaptic plasticity are associated with depression, but the specific mechanisms underlying these changes have not been identified. Here, we review the interplay between stress, synaptic plasticity, and MeCP2. We focus our attention on the transcriptional regulation of important neuronal plasticity genes such as BDNF and reelin (RELN). Moreover, we provide evidence from recent studies showing a link between chronic stress-induced depressive symptoms and dysregulation of MeCP2 expression, underscoring the role of this protein in stress-related pathology. We conclude that MeCP2 is a promising target for the development of novel, more efficacious therapeutics for the treatment of stress-related disorders such as depression.
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Affiliation(s)
- Carla L. Sánchez-Lafuente
- Division of Medical Sciences, University of Victoria, Victoria, BC V8W 2Y2, Canada; (C.L.S.-L.); (L.E.K.); (H.J.C.)
| | - Lisa E. Kalynchuk
- Division of Medical Sciences, University of Victoria, Victoria, BC V8W 2Y2, Canada; (C.L.S.-L.); (L.E.K.); (H.J.C.)
| | - Hector J. Caruncho
- Division of Medical Sciences, University of Victoria, Victoria, BC V8W 2Y2, Canada; (C.L.S.-L.); (L.E.K.); (H.J.C.)
| | - Juan Ausió
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC V8W 3P6, Canada
- Correspondence:
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Emerging role of HDL in brain cholesterol metabolism and neurodegenerative disorders. Biochim Biophys Acta Mol Cell Biol Lipids 2022; 1867:159123. [PMID: 35151900 DOI: 10.1016/j.bbalip.2022.159123] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 02/01/2022] [Accepted: 02/03/2022] [Indexed: 01/07/2023]
Abstract
High-density lipoproteins (HDLs play a key role in cholesterol homeostasis maintenance in the central nervous system (CNS), by carrying newly synthesized cholesterol from astrocytes to neurons, to support their lipid-related physiological functions. As occurs for plasma HDLs, brain lipoproteins are assembled through the activity of membrane cholesterol transporters, undergo remodeling mediated by specific enzymes and transport proteins, and finally deliver cholesterol to neurons by a receptor-mediated internalization process. A growing number of evidences indicates a strong association between alterations of CNS cholesterol homeostasis and neurodegenerative disorders, in particular Alzheimer's disease (AD), and a possible role in this relationship may be played by defects in brain HDL metabolism. In the present review, we summarize and critically examine the current state of knowledge on major modifications of HDL and HDL-mediated brain cholesterol transport in AD, by taking into consideration the individual steps of this process. We also describe potential and encouraging HDL-based therapies that could represent new therapeutic strategies for AD treatment. Finally, we revise the main plasma and brain HDL modifications in other neurodegenerative disorders including Parkinson's disease (PD), Huntington's disease (HD), and frontotemporal dementia (FTD).
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Sawahata M, Asano H, Nagai T, Ito N, Kohno T, Nabeshima T, Hattori M, Yamada K. Microinjection of Reelin into the mPFC prevents MK-801-induced recognition memory impairment in mice. Pharmacol Res 2021; 173:105832. [PMID: 34450306 DOI: 10.1016/j.phrs.2021.105832] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 08/16/2021] [Accepted: 08/16/2021] [Indexed: 11/16/2022]
Abstract
Reelin, a large extracellular matrix protein, helps to regulate neuronal plasticity and cognitive function. Several studies have shown that Reelin dysfunction, resulting from factors such as mutations in gene RELN or low Reelin expression, is associated with schizophrenia (SCZ). We previously reported that microinjection of Reelin into cerebral ventricle prevents phencyclidine-induced cognitive and sensory-motor gating deficits. However, it remains unclear whether and how Reelin ameliorates behavioral abnormalities in the animal model of SCZ. In the present study, we evaluated the effect of recombinant Reelin microinjection into the medial prefrontal cortex (mPFC) on abnormal behaviors induced by MK-801, an N-methyl-D-aspartate receptor antagonist. Microinjection of Reelin into the mPFC prevented impairment of recognition memory of MK-801-treated mice in the novel object recognition test (NORT). On the other hand, the same treatment had no effect on deficits in sensory-motor gating and short-term memory in the pre-pulse inhibition and Y-maze tests, respectively. To establish the neural substrates that respond to Reelin, the number of c-Fos-positive cells in the mPFC was determined. A significant increase in c-Fos-positive cells in the mPFC of MK-801-treated mice was observed when compared with saline-treated mice, and this change was suppressed by microinjection of Reelin into the mPFC. A K2360/2467A Reelin that cannot bind to its receptor failed to ameliorate MK-801-induced cognitive deficits in NORT. These results suggest that Reelin prevents MK-801-induced recognition memory impairment by acting on its receptors to suppress neural activity in the mPFC of mice.
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Affiliation(s)
- Masahito Sawahata
- Department of Neuropsychopharmacology and Hospital Pharmacy, Nagoya University, Graduate School of Medicine, Nagoya, Aichi, Japan; Department of Applied Pharmacology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - Hiroki Asano
- Department of Neuropsychopharmacology and Hospital Pharmacy, Nagoya University, Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Taku Nagai
- Department of Neuropsychopharmacology and Hospital Pharmacy, Nagoya University, Graduate School of Medicine, Nagoya, Aichi, Japan; Division of Behavioral Neuropharmacology, International Center for Brain Science (ICBS), Fujita Health University, Toyoake 470-1192, Japan
| | - Norimichi Ito
- Department of Neuropsychopharmacology and Hospital Pharmacy, Nagoya University, Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Takao Kohno
- Department of Biomedical Science, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Aichi, 467-8603, Japan
| | - Toshitaka Nabeshima
- Advanced Diagnostic System Research Laboratory, Graduate School of Health Sciences, Fujita Health University, Toyoake 470-1192, Japan
| | - Mitsuharu Hattori
- Department of Biomedical Science, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Aichi, 467-8603, Japan
| | - Kiyofumi Yamada
- Department of Neuropsychopharmacology and Hospital Pharmacy, Nagoya University, Graduate School of Medicine, Nagoya, Aichi, Japan.
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Lu Y, Chen W, Wei C, Zhu Y, Xu R. Potential Common Genetic Risks of Sporadic Parkinson's Disease and Amyotrophic Lateral Sclerosis in the Han Population of Mainland China. Front Neurosci 2021; 15:753870. [PMID: 34707478 PMCID: PMC8542930 DOI: 10.3389/fnins.2021.753870] [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: 08/09/2021] [Accepted: 09/13/2021] [Indexed: 11/16/2022] Open
Abstract
Sporadic Parkinson’s disease (sPD) and sporadic amyotrophic lateral sclerosis (sALS) are neurodegenerative diseases characterized by progressive and selective neuron death, with some genetic similarities. In order to investigate the genetic risk factors common to both sPD and sALS, we carried out a screen of risk alleles for sALS and related loci in 530 sPD patients and 530 controls from the Han population of Mainland China (HPMC). We selected 27 single-nucleotide polymorphisms in 10 candidate genes associated with sALS, and we performed allelotyping and genotyping to determine their frequencies in the study population as well as bioinformatics analysis to assess their functional significance in these diseases. The minor alleles of rs17115303 in DAB adaptor protein 1 (DAB1) gene and rs6030462 in protein tyrosine phosphatase receptor type T (PTPRT) gene were correlated with increased risk of both sPD and sALS. Polymorphisms of rs17115303 and rs6030462 were associated with alterations in transcription factor binding sites, secondary structures, long non-coding RNA interactions, and nervous system regulatory networks; these changes involved biological processes associated with neural cell development, differentiation, neurogenesis, migration, axonogenesis, cell adhesion, and metabolism of phosphate-containing compounds. Thus, variants of DAB1 gene (rs17115303) and PTPRT gene (rs6030462) are risk factors common to sPD and sALS in the HPMC. These findings provide insight into the molecular pathogenesis of both diseases and can serve as a basis for the development of targeted therapies.
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Affiliation(s)
- Yi Lu
- Department of Neurology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Wenzhi Chen
- Department of Neurology, Jiangxi Provincial People's Hospital, Affiliated People's Hospital of Nanchang University, Nanchang, China
| | - Caihui Wei
- Department of Neurology, Jiangxi Provincial People's Hospital, Affiliated People's Hospital of Nanchang University, Nanchang, China
| | - Yu Zhu
- Department of Neurology, Jiangxi Provincial People's Hospital, Affiliated People's Hospital of Nanchang University, Nanchang, China
| | - Renshi Xu
- Department of Neurology, Jiangxi Provincial People's Hospital, Affiliated People's Hospital of Nanchang University, Nanchang, China
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Connexin Expression Is Altered in Liver Development of Yotari ( dab1 -/-) Mice. Int J Mol Sci 2021; 22:ijms221910712. [PMID: 34639052 PMCID: PMC8509723 DOI: 10.3390/ijms221910712] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 09/26/2021] [Accepted: 09/29/2021] [Indexed: 01/05/2023] Open
Abstract
Disabled-1 (Dab1) protein is an intracellular adaptor of reelin signaling required for prenatal neuronal migration, as well as postnatal neurotransmission, memory formation and synaptic plasticity. Yotari, an autosomal recessive mutant of the mouse Dab1 gene is recognizable by its premature death, unstable gait and tremor. Previous findings are mostly based on neuronal abnormalities caused by Dab1 deficiency, but the role of the reelin signaling pathway in nonneuronal tissues and organs has not been studied until recently. Hepatocytes, the most abundant cells in the liver, communicate via gap junctions (GJ) are composed of connexins. Cell communication disruption in yotari mice was examined by analyzing the expression of connexins (Cxs): Cx26, Cx32, Cx37, Cx40, Cx43 and Cx45 during liver development at 13.5 and 15.5 gestation days (E13.5 and E15.5). Analyses were performed using immunohistochemistry and fluorescent microscopy, followed by quantification of area percentage covered by positive signal. Data are expressed as a mean ± SD and analyzed by one-way ANOVA. All Cxs examined displayed a significant decrease in yotari compared to wild type (wt) individuals at E13.5. Looking at E15.5 we have similar results with exception of Cx37 showing negligible expression in wt. Channels formation triggered by pathological stimuli, as well as propensity to apoptosis, was studied by measuring the expression of Pannexin1 (Panx1) and Apoptosis-inducing factor (AIF) through developmental stages mentioned above. An increase in Panx1 expression of E15.5 yotari mice, as well as a strong jump of AIF in both phases suggesting that yotari mice are more prone to apoptosis. Our results emphasize the importance of gap junction intercellular communication (GJIC) during liver development and their possible involvement in liver pathology and diagnostics where they can serve as potential biomarkers and drug targets.
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Orcinha C, Kilias A, Paschen E, Follo M, Haas CA. Reelin Is Required for Maintenance of Granule Cell Lamination in the Healthy and Epileptic Hippocampus. Front Mol Neurosci 2021; 14:730811. [PMID: 34483838 PMCID: PMC8414139 DOI: 10.3389/fnmol.2021.730811] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 07/26/2021] [Indexed: 11/21/2022] Open
Abstract
One characteristic feature of mesial temporal lobe epilepsy is granule cell dispersion (GCD), a pathological widening of the granule cell layer in the dentate gyrus. The loss of the extracellular matrix protein Reelin, an important positional cue for neurons, correlates with GCD formation in MTLE patients and in rodent epilepsy models. Here, we used organotypic hippocampal slice cultures (OHSC) from transgenic mice expressing enhanced green fluorescent protein (eGFP) in differentiated granule cells (GCs) to monitor GCD formation dynamically by live cell video microscopy and to investigate the role of Reelin in this process. We present evidence that following treatment with the glutamate receptor agonist kainate (KA), eGFP-positive GCs migrated mainly toward the hilar region. In the hilus, Reelin-producing neurons were rapidly lost following KA treatment as shown in a detailed time series. Addition of recombinant Reelin fragments to the medium effectively prevented the KA-triggered movement of eGFP-positive GCs. Placement of Reelin-coated beads into the hilus of KA-treated cultures stopped the migration of GCs in a distance-dependent manner. In addition, quantitative Western blot analysis revealed that KA treatment affects the Reelin signal transduction pathway by increasing intracellular adaptor protein Disabled-1 synthesis and reducing the phosphorylation of cofilin, a downstream target of the Reelin pathway. Both events were normalized by addition of recombinant Reelin fragments. Finally, following neutralization of Reelin in healthy OHSC by incubation with the function-blocking CR-50 Reelin antibody, GCs started to migrate without any direction preference. Together, our findings demonstrate that normotopic position of Reelin is essential for the maintenance of GC lamination in the dentate gyrus and that GCD is the result of a local Reelin deficiency.
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Affiliation(s)
- Catarina Orcinha
- Experimental Epilepsy Research, Department of Neurosurgery, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany
| | - Antje Kilias
- Biomicrotechnology, Department of Microsystems Engineering (IMTEK), University of Freiburg, Freiburg im Breisgau, Germany
| | - Enya Paschen
- Experimental Epilepsy Research, Department of Neurosurgery, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany.,Faculty of Biology, University of Freiburg, Freiburg im Breisgau, Germany
| | - Marie Follo
- Lighthouse Core Facility, Department of Internal Medicine I, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany
| | - Carola A Haas
- Experimental Epilepsy Research, Department of Neurosurgery, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany.,Center for Basics in NeuroModulation, Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany
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Hamad MIK, Petrova P, Daoud S, Rabaya O, Jbara A, Melliti N, Leifeld J, Jakovčevski I, Reiss G, Herz J, Förster E. Reelin restricts dendritic growth of interneurons in the neocortex. Development 2021; 148:272055. [PMID: 34414407 DOI: 10.1242/dev.199718] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 08/12/2021] [Indexed: 11/20/2022]
Abstract
Reelin is a large secreted glycoprotein that regulates neuronal migration, lamination and establishment of dendritic architecture in the embryonic brain. Reelin expression switches postnatally from Cajal-Retzius cells to interneurons. However, reelin function in interneuron development is still poorly understood. Here, we have investigated the role of reelin in interneuron development in the postnatal neocortex. To preclude early cortical migration defects caused by reelin deficiency, we employed a conditional reelin knockout (RelncKO) mouse to induce postnatal reelin deficiency. Induced reelin deficiency caused dendritic hypertrophy in distal dendritic segments of neuropeptide Y-positive (NPY+) and calretinin-positive (Calr+) interneurons, and in proximal dendritic segments of parvalbumin-positive (Parv+) interneurons. Chronic recombinant Reelin treatment rescued dendritic hypertrophy in Relncko interneurons. Moreover, we provide evidence that RelncKO interneuron hypertrophy is due to presynaptic GABABR dysfunction. Thus, GABABRs in RelncKO interneurons were unable to block N-type (Cav2.2) Ca2+ channels that control neurotransmitter release. Consequently, the excessive Ca2+ influx through AMPA receptors, but not NMDA receptors, caused interneuron dendritic hypertrophy. These findings suggest that reelin acts as a 'stop-growth-signal' for postnatal interneuron maturation.
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Affiliation(s)
- Mohammad I K Hamad
- Institute for Anatomy and Clinical Morphology, School of Medicine, Faculty of Health, Witten/Herdecke University, Witten 58455, Germany.,Department of Neuroanatomy and Molecular Brain Research, Medical Faculty, Ruhr University Bochum, Bochum 44801, Germany
| | - Petya Petrova
- Department of Neuroanatomy and Molecular Brain Research, Medical Faculty, Ruhr University Bochum, Bochum 44801, Germany
| | - Solieman Daoud
- Department of Neuroanatomy and Molecular Brain Research, Medical Faculty, Ruhr University Bochum, Bochum 44801, Germany
| | - Obada Rabaya
- Department of Neuroanatomy and Molecular Brain Research, Medical Faculty, Ruhr University Bochum, Bochum 44801, Germany
| | - Abdalrahim Jbara
- Department of Neuroanatomy and Molecular Brain Research, Medical Faculty, Ruhr University Bochum, Bochum 44801, Germany
| | - Nesrine Melliti
- Department of Neuroanatomy and Molecular Brain Research, Medical Faculty, Ruhr University Bochum, Bochum 44801, Germany
| | - Jennifer Leifeld
- Department of Neuroanatomy and Molecular Brain Research, Medical Faculty, Ruhr University Bochum, Bochum 44801, Germany
| | - Igor Jakovčevski
- Institute for Anatomy and Clinical Morphology, School of Medicine, Faculty of Health, Witten/Herdecke University, Witten 58455, Germany
| | - Gebhard Reiss
- Institute for Anatomy and Clinical Morphology, School of Medicine, Faculty of Health, Witten/Herdecke University, Witten 58455, Germany
| | - Joachim Herz
- Departments of Molecular Genetics, Neuroscience, Neurology and Neurotherapeutics; Center for Translational Neurodegeneration Research, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Eckart Förster
- Department of Neuroanatomy and Molecular Brain Research, Medical Faculty, Ruhr University Bochum, Bochum 44801, Germany
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Dou A, Zhang Y, Wang Y, Liu X, Guo Y. Reelin depletion alleviates multiple myeloma bone disease by promoting osteogenesis and inhibiting osteolysis. Cell Death Discov 2021; 7:219. [PMID: 34433809 PMCID: PMC8387418 DOI: 10.1038/s41420-021-00608-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 05/26/2021] [Accepted: 06/24/2021] [Indexed: 11/09/2022] Open
Abstract
Extracellular matrix glycoprotein Reelin is associated with tumor metastasis and prognosis in various malignancies. However, its effects on multiple myeloma (MM) are not fully understood. Here, we investigated the regulatory effects of Reelin on MM and its underlying pathogenic mechanisms. Lentivirus plasmid containing short hairpin RNA targeting Reelin (LV3-Reln) was transfected into SP2/0 cells to knockdown Reelin expression. Flow cytometry assay analyzed cell cycle and apoptosis while Transwell assay evaluated invasiveness. BALB/c mice were inoculated with LV3-Reln-transfected SP2/0 cells to establish MM model. Primary myeloma cells and osteoblasts/osteoclast were isolated from tumor tissue and limb long bones respectively. ELISA examined serum biomarkers and immunohistochemistry detected immunoglobulin light chain expression. Morphological changes and osteoclast/osteoblast differentiation were observed by histological staining. mRNA and proteins expression were determined by qPCR and WB. In vitro studies showed that Reelin depletion regulated osteolysis and osteogenesis balance, cell cycle, invasiveness, and apoptosis in SP2/0 cells. In LV3-Reln mice, tumor growth and invasiveness were suppressed, meanwhile, reduced osteoclast activation and enhanced osteoblast activity were observed. Reelin knockdown alleviated extramedullary morbidity and inhibited spleen immune cell apoptosis by down-regulating CDK5, IL-10, and Cyto-C expression. Furthermore, reduced Reelin expression restrained osteoclast differentiation while promoted osteogenesis in the bone of LV3-Reln mice. This was further supported by down-regulation of osteolytic specific mRNAs and proteins (Trap, Mmp9, Ctsk, Clcn7) and up-regulation of osteogenic specific ones (COL-1, Runx2, β-Catenin). Reelin exerted important impacts on myeloma development through rebalancing osteolysis and osteogenesis, thus might be a potential therapeutic target for MM.
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Affiliation(s)
- Aixia Dou
- Department of Hematology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China.
| | - Ying Zhang
- Department of Hematology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Yongjing Wang
- Department of Hematology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Xiaoli Liu
- Department of Hematology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Yanan Guo
- Department of Hematology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
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Cui F, Gu S, Gu Y, Yin J, Fang C, Liu L. Alteration in the mRNA expression profile of the autophagy-related mTOR pathway in schizophrenia patients treated with olanzapine. BMC Psychiatry 2021; 21:388. [PMID: 34348681 PMCID: PMC8335969 DOI: 10.1186/s12888-021-03394-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 07/26/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The mammalian target of rapamycin protein (mTOR) signaling pathway is involved in the pathogenesis of schizophrenia and the mechanism of extrapyramidal adverse reactions to antipsychotic drugs, which might be mediated by an mTOR-dependent autophagy impairment. This study aimed to examine the expression of mTOR pathway genes in patients with schizophrenia treated with olanzapine, which is considered an mTOR inhibitor and autophagy inducer. METHODS Thirty-two patients with acute schizophrenia who had been treated with olanzapine for four weeks (average dose 14.24 ± 4.35 mg/d) and 32 healthy volunteers were recruited. Before and after olanzapine treatment, the Positive and Negative Syndrome Scale (PANSS) was used to evaluate the symptoms of patients with schizophrenia, and the mRNA expression levels of mTOR pathway-related genes, including MTOR, RICTOR, RAPTOR, and DEPTOR, were detected in fasting venous blood samples from all subjects using real-time quantitative PCR. RESULTS The MTOR and RICTOR mRNA expression levels in patients with acute schizophrenia were significantly decreased compared with those of healthy controls and further significantly decreased after four weeks of olanzapine treatment. The DEPTOR mRNA expression levels in patients with acute schizophrenia were not significantly different from those of healthy controls but were significantly increased after treatment. The expression levels of the RAPTOR mRNA were not significantly different among the three groups. The pairwise correlations of MTOR, DEPTOR, RAPTOR, and RICTOR mRNA expression levels in patients with acute schizophrenia and healthy controls were significant. After olanzapine treatment, the correlations between the expression levels of the DEPTOR and MTOR mRNAs and between the DEPTOR and RICTOR mRNAs disappeared. CONCLUSIONS Abnormalities in the mTOR pathway, especially DEPTOR and mTORC2, might play important roles in the autophagy mechanism underlying the pathophysiology of schizophrenia and effects of olanzapine treatment.
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Affiliation(s)
- Fengwei Cui
- grid.89957.3a0000 0000 9255 8984Department of Geriatric Psychiatry, Wuxi Mental Health Center, Nanjing Medical University, Wuxi, 214151 Jiangsu China
| | - Shuguang Gu
- grid.89957.3a0000 0000 9255 8984Department of Geriatric Psychiatry, Wuxi Mental Health Center, Nanjing Medical University, Wuxi, 214151 Jiangsu China
| | - Yue Gu
- grid.89957.3a0000 0000 9255 8984The First Clinical Medical College, Nanjing Medical University, Nanjing, 211166 Jiangsu China
| | - Jiajun Yin
- grid.89957.3a0000 0000 9255 8984Department of Geriatric Psychiatry, Wuxi Mental Health Center, Nanjing Medical University, Wuxi, 214151 Jiangsu China
| | - Chunxia Fang
- Combined TCM & Western Medicine Department, Wuxi Mental Health Center, Nanjing Medical University, Wuxi, 214151, Jiangsu, China.
| | - Liang Liu
- Department of Geriatric Psychiatry, Wuxi Mental Health Center, Nanjing Medical University, Wuxi, 214151, Jiangsu, China.
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37
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den Hoed J, Devaraju K, Fisher SE. Molecular networks of the FOXP2 transcription factor in the brain. EMBO Rep 2021; 22:e52803. [PMID: 34260143 PMCID: PMC8339667 DOI: 10.15252/embr.202152803] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 05/19/2021] [Accepted: 06/23/2021] [Indexed: 01/06/2023] Open
Abstract
The discovery of the FOXP2 transcription factor, and its implication in a rare severe human speech and language disorder, has led to two decades of empirical studies focused on uncovering its roles in the brain using a range of in vitro and in vivo methods. Here, we discuss what we have learned about the regulation of FOXP2, its downstream effectors, and its modes of action as a transcription factor in brain development and function, providing an integrated overview of what is currently known about the critical molecular networks.
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Affiliation(s)
- Joery den Hoed
- Language and Genetics DepartmentMax Planck Institute for PsycholinguisticsNijmegenThe Netherlands
- International Max Planck Research School for Language SciencesMax Planck Institute for PsycholinguisticsNijmegenThe Netherlands
| | - Karthikeyan Devaraju
- Language and Genetics DepartmentMax Planck Institute for PsycholinguisticsNijmegenThe Netherlands
| | - Simon E Fisher
- Language and Genetics DepartmentMax Planck Institute for PsycholinguisticsNijmegenThe Netherlands
- Donders Institute for Brain, Cognition and BehaviourRadboud UniversityNijmegenThe Netherlands
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38
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Kadriu B, Musazzi L, Johnston JN, Kalynchuk LE, Caruncho HJ, Popoli M, Zarate CA. Positive AMPA receptor modulation in the treatment of neuropsychiatric disorders: A long and winding road. Drug Discov Today 2021; 26:2816-2838. [PMID: 34358693 DOI: 10.1016/j.drudis.2021.07.027] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 05/12/2021] [Accepted: 07/28/2021] [Indexed: 12/13/2022]
Abstract
Glutamatergic transmission is widely implicated in neuropsychiatric disorders, and the discovery that ketamine elicits rapid-acting antidepressant effects by modulating α-amino-3-hydroxy-5-methyl-4-isoxazole propionic acid receptor (AMPAR) signaling has spurred a resurgence of interest in the field. This review explores agents in various stages of development for neuropsychiatric disorders that positively modulate AMPARs, both directly and indirectly. Despite promising preclinical research, few direct and indirect AMPAR positive modulators have progressed past early clinical development. Challenges such as low potency have created barriers to effective implementation. Nevertheless, the functional complexity of AMPARs sets them apart from other drug targets and allows for specificity in drug discovery. Additional effective treatments for neuropsychiatric disorders that work through positive AMPAR modulation may eventually be developed.
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Affiliation(s)
- Bashkim Kadriu
- Experimental Therapeutics & Pathophysiology Branch, Division of Intramural Research Programs, National Institute of Mental Health, National Institutes of Health, Bethesda, MD, USA.
| | - Laura Musazzi
- School of Medicine and Surgery, University of Milano-Bicocca, Italy
| | - Jenessa N Johnston
- Experimental Therapeutics & Pathophysiology Branch, Division of Intramural Research Programs, National Institute of Mental Health, National Institutes of Health, Bethesda, MD, USA; Division of Medical Sciences, University of Victoria, Victoria, BC, Canada
| | - Lisa E Kalynchuk
- Division of Medical Sciences, University of Victoria, Victoria, BC, Canada
| | - Hector J Caruncho
- Division of Medical Sciences, University of Victoria, Victoria, BC, Canada
| | - Maurizio Popoli
- Laboratory of Neuropsychopharmacology and Functional Neurogenomics, Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, Italy
| | - Carlos A Zarate
- Experimental Therapeutics & Pathophysiology Branch, Division of Intramural Research Programs, National Institute of Mental Health, National Institutes of Health, Bethesda, MD, USA
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39
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Nagae M, Suzuki K, Yasui N, Nogi T, Kohno T, Hattori M, Takagi J. Structural studies of reelin N-terminal region provides insights into a unique structural arrangement and functional multimerization. J Biochem 2021; 169:555-564. [PMID: 33377147 DOI: 10.1093/jb/mvaa144] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 12/03/2020] [Indexed: 01/31/2023] Open
Abstract
The large, secreted glycoprotein reelin regulates embryonic brain development as well as adult brain functions. Although reelin binds to its receptors via its central part, the N-terminal region directs multimer formation and is critical for efficient signal transduction. In fact, the inhibitory antibody CR-50 interacts with the N-terminal region and prevents higher-order multimerization and signalling. Reelin is a multidomain protein in which the central part is composed of eight characteristic repeats, named reelin repeats, each of which is further divided by insertion of a epidermal growth factor (EGF) module into two subrepeats. In contrast, the N-terminal region shows unique 'irregular' domain architecture since it comprises three consecutive subrepeats without the intervening EGF module. Here, we determined the crystal structure of the murine reelin fragment named RX-R1 including the irregular region and the first reelin repeat at 2.0-Å resolution. The overall structure of RX-R1 has a branched Y-shaped form. Interestingly, two incomplete subrepeats cooperatively form one entire subrepeat structure, though an additional subrepeat is inserted between them. We further reveal that Arg335 of RX-R1 is crucial for binding CR-50. A possible self-association mechanism via the N-terminal region is proposed based on our results.
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Affiliation(s)
- Masamichi Nagae
- Department of Molecular Immunology, Research Institute for Microbial Diseases.,Laboratory of Molecular Immunology, Immunology Frontier Research Center (iFReC), Osaka University, 3-1 Yamada-Oka, Suita, Osaka 565-0871, Japan
| | - Kei Suzuki
- Institute for Protein Research, Osaka University, 3-2 Yamada-Oka, Suita, Osaka 565-0871, Japan
| | - Norihisa Yasui
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 1-1-1, Tsushima-naka, Kita-ku, Okayama 700-8530, Japan
| | - Terukazu Nogi
- Graduate School of Medical Life Science, Yokohama City University, Tsurumi-ku, Yokohama 230-0045, Japan
| | - Takao Kohno
- Department of Biomedical Science, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Aichi 467-8603, Japan
| | - Mitsuharu Hattori
- Department of Biomedical Science, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Aichi 467-8603, Japan
| | - Junichi Takagi
- Institute for Protein Research, Osaka University, 3-2 Yamada-Oka, Suita, Osaka 565-0871, Japan
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40
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Lee SE, Lee GH. Reelin Affects Signaling Pathways of a Group of Inhibitory Neurons and the Development of Inhibitory Synapses in Primary Neurons. Int J Mol Sci 2021; 22:ijms22147510. [PMID: 34299127 PMCID: PMC8305533 DOI: 10.3390/ijms22147510] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 06/26/2021] [Accepted: 07/10/2021] [Indexed: 11/16/2022] Open
Abstract
Reelin is a secretory protein involved in a variety of processes in forebrain development and function, including neuronal migration, dendrite growth, spine formation, and synaptic plasticity. Most of the function of Reelin is focused on excitatory neurons; however, little is known about its effects on inhibitory neurons and inhibitory synapses. In this study, we investigated the phosphatidylinositol 3-kinase/Akt pathway of Reelin in primary cortical and hippocampal neurons. Individual neurons were visualized using immunofluorescence to distinguish inhibitory neurons from excitatory neurons. Reelin-rich protein supplementation significantly induced the phosphorylation of Akt and ribosomal S6 protein in excitatory neurons, but not in most inhibitory neurons. In somatostatin-expressing inhibitory neurons, one of major subtypes of inhibitory neurons, Reelin-rich protein supplementation induced the phosphorylation of S6. Subsequently, we investigated whether or not Reelin-rich protein supplementation affected dendrite development in cultured inhibitory neurons. Reelin-rich protein supplementation did not change the total length of dendrites in inhibitory neurons in vitro. Finally, we examined the development of inhibitory synapses in primary hippocampal neurons and found that Reelin-rich protein supplementation significantly reduced the density of gephyrin-VGAT-positive clusters in the dendritic regions without changing the expression levels of several inhibitory synapse-related proteins. These findings indicate a new role for Reelin in specific groups of inhibitory neurons and the development of inhibitory synapses, which may contribute to the underlying cellular mechanisms of RELN-associated neurological disorders.
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41
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Pahle J, Muhia M, Wagener RJ, Tippmann A, Bock HH, Graw J, Herz J, Staiger JF, Drakew A, Kneussel M, Rune GM, Frotscher M, Brunne B. Selective Inactivation of Reelin in Inhibitory Interneurons Leads to Subtle Changes in the Dentate Gyrus But Leaves Cortical Layering and Behavior Unaffected. Cereb Cortex 2021; 30:1688-1707. [PMID: 31667489 PMCID: PMC7132935 DOI: 10.1093/cercor/bhz196] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Reelin is an extracellular matrix protein, known for its dual role in neuronal migration during brain development and in synaptic plasticity at adult stages. During the perinatal phase, Reelin expression switches from Cajal-Retzius (CR) cells, its main source before birth, to inhibitory interneurons (IN), the main source of Reelin in the adult forebrain. IN-derived Reelin has been associated with schizophrenia and temporal lobe epilepsy; however, the functional role of Reelin from INs is presently unclear. In this study, we used conditional knockout mice, which lack Reelin expression specifically in inhibitory INs, leading to a substantial reduction in total Reelin expression in the neocortex and dentate gyrus. Our results show that IN-specific Reelin knockout mice exhibit normal neuronal layering and normal behavior, including spatial reference memory. Although INs are the major source of Reelin within the adult stem cell niche, Reelin from INs does not contribute substantially to normal adult neurogenesis. While a closer look at the dentate gyrus revealed some unexpected alterations at the cellular level, including an increase in the number of Reelin expressing CR cells, overall our data suggest that Reelin derived from INs is less critical for cortex development and function than Reelin expressed by CR cells.
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Affiliation(s)
- Jasmine Pahle
- Institute for Structural Neurobiology, Center for Molecular Neurobiology, ZMNH, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Mary Muhia
- Institute of Molecular Neurogenetics, Center for Molecular Neurobiology, ZMNH, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Robin J Wagener
- Neurology Clinic, University Hospital Heidelberg, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany
| | - Anja Tippmann
- Institute for Structural Neurobiology, Center for Molecular Neurobiology, ZMNH, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany.,Department of Systems Neuroscience, Johann-Friedrich-Blumenbach Institute for Zoology and Anthropology, University of Göttingen, 37075 Göttingen, Germany
| | - Hans H Bock
- Clinic of Gastroenterology and Hepatology, Heinrich-Heine-University Düsseldorf, 40225 Düsseldorf, Germany
| | - Janice Graw
- Institute of Neuroanatomy, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Joachim Herz
- Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Jochen F Staiger
- Institute for Neuroanatomy, University Medical Center Göttingen, Georg-August-University Göttingen, 37075 Göttingen, Germany
| | - Alexander Drakew
- Institute for Structural Neurobiology, Center for Molecular Neurobiology, ZMNH, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany.,Institute of Clinical Neuroanatomy, Faculty of Medicine, 60590 Frankfurt, Germany
| | - Matthias Kneussel
- Institute of Molecular Neurogenetics, Center for Molecular Neurobiology, ZMNH, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Gabriele M Rune
- Institute of Neuroanatomy, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Michael Frotscher
- Institute for Structural Neurobiology, Center for Molecular Neurobiology, ZMNH, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Bianka Brunne
- Institute for Structural Neurobiology, Center for Molecular Neurobiology, ZMNH, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany.,Institute of Neuroanatomy, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany
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42
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Biamonte F, Sica G, Filippini A, D’Alessio A. Evidence of Reelin Signaling in GBM and Its Derived Cancer Stem Cells. Brain Sci 2021; 11:brainsci11060745. [PMID: 34205192 PMCID: PMC8227261 DOI: 10.3390/brainsci11060745] [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: 04/29/2021] [Revised: 05/26/2021] [Accepted: 05/27/2021] [Indexed: 11/22/2022] Open
Abstract
Glioblastoma (GBM) is the most aggressive and malignant form of primary brain cancer, characterized by an overall survival time ranging from 12 to 18 months. Despite the progress in the clinical treatment and the growing number of experimental data aimed at investigating the molecular bases of GBM development, the disease remains characterized by a poor prognosis. Recent studies have proposed the existence of a population of GBM cancer stem cells (CSCs) endowed with self-renewal capability and a high tumorigenic potential that are believed to be responsible for the resistance against common chemotherapy and radiotherapy treatments. Reelin is a large secreted extracellular matrix glycoprotein, which contributes to positioning, migration, and laminar organization of several central nervous system structures during brain development. Mutations of the reelin gene have been linked to disorganization of brain structures during development and behavioral anomalies. In this study, we explored the expression of reelin in GBM and its related peritumoral tissue and performed the same analysis in CSCs isolated from both GBM (GCSCs) and peritumoral tissue (PCSCs) of human patients. Our findings reveal (i) the higher expression of reelin in GBM compared to the peritumoral tissue by immunohistochemical analysis, (ii) the mRNA expression of both reelin and its adaptor molecule Dab1 in either CSC subtypes, although at a different extent; and (iii) the contribution of CSCs-derived reelin in the migration of human primary GBM cell line U87MG. Taken together, our data indicate that the expression of reelin in GBM may represent a potential contribution to the regulation of GBM cancer stem cells behavior, further stimulating the interest on the reelin pathway as a potential target for GBM treatment.
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Affiliation(s)
- Filippo Biamonte
- Dipartimento di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario “Agostino Gemelli”, IRCCS, 00168 Roma, Italy;
| | - Gigliola Sica
- Dipartimento di Scienze della Vita e Sanità Pubblica, Sezione di Istologia ed Embriologia, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario “Agostino Gemelli”, IRCCS, 00168 Roma, Italy;
| | - Antonio Filippini
- Dipartimento di Scienze Anatomiche, Istologiche, Medico Legali e dell’Apparato Locomotore, Unità di Istologia ed Embriologia Medica, Sapienza Università di Roma, 00161 Roma, Italy;
| | - Alessio D’Alessio
- Dipartimento di Scienze della Vita e Sanità Pubblica, Sezione di Istologia ed Embriologia, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario “Agostino Gemelli”, IRCCS, 00168 Roma, Italy;
- Correspondence:
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43
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Turk LS, Kuang X, Dal Pozzo V, Patel K, Chen M, Huynh K, Currie MJ, Mitchell D, Dobson RCJ, D'Arcangelo G, Dai W, Comoletti D. The structure-function relationship of a signaling-competent, dimeric Reelin fragment. Structure 2021; 29:1156-1170.e6. [PMID: 34089653 DOI: 10.1016/j.str.2021.05.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 04/26/2021] [Accepted: 05/14/2021] [Indexed: 01/21/2023]
Abstract
Reelin operates through canonical and non-canonical pathways that mediate several aspects of brain development and function. Reelin's dimeric central fragment (CF), generated through proteolytic cleavage, is required for the lipoprotein-receptor-dependent canonical pathway activation. Here, we analyze the signaling properties of a variety of Reelin fragments and measure the differential binding affinities of monomeric and dimeric CF fragments to lipoprotein receptors to investigate the mode of canonical signal activation. We also present the cryoelectron tomography-solved dimeric structure of Reelin CF and support it using several other biophysical techniques. Our findings suggest that Reelin CF forms a covalent parallel dimer with some degree of flexibility between the two protein chains. As a result of this conformation, Reelin binds to lipoprotein receptors in a manner inaccessible to its monomeric form and is capable of stimulating canonical pathway signaling.
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Affiliation(s)
- Liam S Turk
- Child Health Institute of New Jersey, New Brunswick, NJ 08901, USA; Department of Neuroscience and Cell Biology, Robert Wood Johnson Medical School, Rutgers, The State University of New Jersey, New Brunswick, NJ 08901, USA; School of Biological Sciences, Victoria University of Wellington, Wellington 6012, New Zealand
| | - Xuyuan Kuang
- Department of Cell Biology and Neuroscience, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA; Institute for Quantitative Biomedicine, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA; Department of Hyperbaric Oxygen, Central South University, Changsha, Hunan Province, China
| | - Valentina Dal Pozzo
- Department of Cell Biology and Neuroscience, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Khush Patel
- Department of Cell Biology and Neuroscience, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Muyuan Chen
- Verna and Marrs McLean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Kevin Huynh
- Department of Cell Biology and Neuroscience, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA; Institute for Quantitative Biomedicine, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Michael J Currie
- Biomolecular Interactions Centre and School of Biological Sciences, University of Canterbury, Christchurch 8041, New Zealand
| | - Daniel Mitchell
- School of Biological Sciences, Victoria University of Wellington, Wellington 6012, New Zealand
| | - Renwick C J Dobson
- Biomolecular Interactions Centre and School of Biological Sciences, University of Canterbury, Christchurch 8041, New Zealand; Bio21 Molecular Science and Biotechnology Institute, Department of Biochemistry and Molecular Biology, University of Melbourne, Parkville, VIC 3010, Australia
| | - Gabriella D'Arcangelo
- Department of Cell Biology and Neuroscience, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Wei Dai
- Department of Cell Biology and Neuroscience, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA; Institute for Quantitative Biomedicine, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA.
| | - Davide Comoletti
- Child Health Institute of New Jersey, New Brunswick, NJ 08901, USA; Department of Neuroscience and Cell Biology, Robert Wood Johnson Medical School, Rutgers, The State University of New Jersey, New Brunswick, NJ 08901, USA; School of Biological Sciences, Victoria University of Wellington, Wellington 6012, New Zealand.
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44
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Melrose J, Hayes AJ, Bix G. The CNS/PNS Extracellular Matrix Provides Instructive Guidance Cues to Neural Cells and Neuroregulatory Proteins in Neural Development and Repair. Int J Mol Sci 2021; 22:ijms22115583. [PMID: 34070424 PMCID: PMC8197505 DOI: 10.3390/ijms22115583] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 05/11/2021] [Accepted: 05/17/2021] [Indexed: 02/07/2023] Open
Abstract
Background. The extracellular matrix of the PNS/CNS is unusual in that it is dominated by glycosaminoglycans, especially hyaluronan, whose space filling and hydrating properties make essential contributions to the functional properties of this tissue. Hyaluronan has a relatively simple structure but its space-filling properties ensure micro-compartments are maintained in the brain ultrastructure, ensuring ionic niches and gradients are maintained for optimal cellular function. Hyaluronan has cell-instructive, anti-inflammatory properties and forms macro-molecular aggregates with the lectican CS-proteoglycans, forming dense protective perineuronal net structures that provide neural and synaptic plasticity and support cognitive learning. Aims. To highlight the central nervous system/peripheral nervous system (CNS/PNS) and its diverse extracellular and cell-associated proteoglycans that have cell-instructive properties regulating neural repair processes and functional recovery through interactions with cell adhesive molecules, receptors and neuroregulatory proteins. Despite a general lack of stabilising fibrillar collagenous and elastic structures in the CNS/PNS, a sophisticated dynamic extracellular matrix is nevertheless important in tissue form and function. Conclusions. This review provides examples of the sophistication of the CNS/PNS extracellular matrix, showing how it maintains homeostasis and regulates neural repair and regeneration.
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Affiliation(s)
- James Melrose
- Raymond Purves Bone and Joint Research Laboratory, Kolling Institute, Northern Sydney Local Health District, St. Leonards, NSW 2065, Australia
- Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW 2052, Australia
- Sydney Medical School, Northern, The University of Sydney, Sydney, NSW 2052, Australia
- Faculty of Medicine and Health, The University of Sydney, Royal North Shore Hospital, St. Leonards, NSW 2065, Australia
- Correspondence:
| | - Anthony J. Hayes
- Bioimaging Research Hub, Cardiff School of Biosciences, Cardiff University, Cardiff CF10 3AX, UK;
| | - Gregory Bix
- Clinical Neuroscience Research Center, Departments of Neurosurgery and Neurology, Tulane University School of Medicine, New Orleans, LA 70112, USA;
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45
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Petit-Pedrol M, Groc L. Regulation of membrane NMDA receptors by dynamics and protein interactions. J Cell Biol 2021; 220:211609. [PMID: 33337489 PMCID: PMC7754687 DOI: 10.1083/jcb.202006101] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Revised: 11/19/2020] [Accepted: 11/20/2020] [Indexed: 12/16/2022] Open
Abstract
Understanding neurotransmitter system crosstalk in the brain is a major challenge in neurobiology. Several intracellular and genomic cascades have been identified in this crosstalk. However, the discovery that neurotransmitter receptors are highly diffusive in the plasma membrane of neurons, where they form heterocomplexes with other proteins, has profoundly changed our view of neurotransmitter signaling. Here, we review new insights into neurotransmitter crosstalk at the plasma membrane. We focus on the membrane organization and interactome of the ionotropic glutamate N-methyl-D-aspartate receptor (NMDAR) that plays a central role in excitatory synaptic and network physiology and is involved in the etiology of several major neuropsychiatric disorders. The nanoscale organization and dynamics of NMDAR is a key regulatory process for glutamate synapse transmission, plasticity, and crosstalk with other neurotransmitter systems, such as the monoaminergic ones. The plasma membrane appears to be a prime regulatory compartment for spatial and temporal crosstalk between neurotransmitter systems in the healthy and diseased brain. Understanding the molecular mechanisms regulating membrane neurotransmitter receptor crosstalk will likely open research avenues for innovative therapeutical strategies.
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Affiliation(s)
- Mar Petit-Pedrol
- Université de Bordeaux, Centre National de la Recherche Scientifique, Interdisciplinary Institute for Neuroscience, Unité Mixte de Recherche 5297, Bordeaux, France
| | - Laurent Groc
- Université de Bordeaux, Centre National de la Recherche Scientifique, Interdisciplinary Institute for Neuroscience, Unité Mixte de Recherche 5297, Bordeaux, France
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46
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Calvier L, Xian X, Lee R, Sacharidou A, Mineo C, Shaul PW, Kounnas MZ, Tsai S, Herz J. Reelin Depletion Protects Against Atherosclerosis by Decreasing Vascular Adhesion of Leukocytes. Arterioscler Thromb Vasc Biol 2021; 41:1309-1318. [PMID: 33626909 PMCID: PMC7990715 DOI: 10.1161/atvbaha.121.316000] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
[Figure: see text].
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MESH Headings
- Animals
- Antibodies, Neutralizing/pharmacology
- Atherosclerosis/genetics
- Atherosclerosis/immunology
- Atherosclerosis/metabolism
- Atherosclerosis/prevention & control
- CX3C Chemokine Receptor 1/genetics
- Cell Adhesion/drug effects
- Cell Adhesion Molecules, Neuronal/antagonists & inhibitors
- Cell Adhesion Molecules, Neuronal/deficiency
- Cell Adhesion Molecules, Neuronal/genetics
- Coculture Techniques
- Disease Models, Animal
- Endothelial Cells/drug effects
- Endothelial Cells/immunology
- Endothelial Cells/metabolism
- Extracellular Matrix Proteins/antagonists & inhibitors
- Extracellular Matrix Proteins/deficiency
- Extracellular Matrix Proteins/genetics
- Female
- Green Fluorescent Proteins/genetics
- Green Fluorescent Proteins/metabolism
- Humans
- LDL-Receptor Related Proteins/metabolism
- Leukocyte Rolling/drug effects
- Leukocytes/drug effects
- Leukocytes/immunology
- Leukocytes/metabolism
- Male
- Mice, Transgenic
- Nerve Tissue Proteins/antagonists & inhibitors
- Nerve Tissue Proteins/deficiency
- Nerve Tissue Proteins/genetics
- Oligonucleotides, Antisense/pharmacology
- Plaque, Atherosclerotic
- Receptors, LDL/deficiency
- Receptors, LDL/genetics
- Reelin Protein
- Serine Endopeptidases/deficiency
- Serine Endopeptidases/genetics
- Signal Transduction
- U937 Cells
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Affiliation(s)
- Laurent Calvier
- Department of Molecular Genetics, University of Texas (UT) Southwestern Medical Center, Dallas TX, USA
- Center for Translational Neurodegeneration Research, UT Southwestern Medical Center, Dallas TX, USA
| | - Xunde Xian
- Department of Molecular Genetics, University of Texas (UT) Southwestern Medical Center, Dallas TX, USA
- Center for Translational Neurodegeneration Research, UT Southwestern Medical Center, Dallas TX, USA
| | - Richard Lee
- Ionis Pharmaceuticals, Inc. San Diego CA, USA
| | - Anastasia Sacharidou
- Center for Pulmonary and Vascular Biology, Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas TX, USA
| | - Chieko Mineo
- Center for Pulmonary and Vascular Biology, Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas TX, USA
| | - Philip W. Shaul
- Center for Pulmonary and Vascular Biology, Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas TX, USA
| | | | - Shirling Tsai
- Department of Surgery, UT Southwestern Medical Center, Dallas TX, USA
- Dallas VA Medical Center, Dallas TX, USA
| | - Joachim Herz
- Department of Molecular Genetics, University of Texas (UT) Southwestern Medical Center, Dallas TX, USA
- Center for Translational Neurodegeneration Research, UT Southwestern Medical Center, Dallas TX, USA
- Department of Neuroscience, UT Southwestern Medical Center, Dallas TX, USA
- Department of Neurology and Neurotherapeutics, UT Southwestern Medical Center, Dallas TX, USA
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47
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Drissi I, Deschamps C, Alary R, Robert A, Dubreuil V, Le Mouël A, Mohammed M, Sabéran‐Djoneidi D, Mezger V, Naassila M, Pierrefiche O. Role of heat shock transcription factor 2 in the NMDA-dependent neuroplasticity induced by chronic ethanol intake in mouse hippocampus. Addict Biol 2021; 26:e12939. [PMID: 32720424 DOI: 10.1111/adb.12939] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 04/09/2020] [Accepted: 06/29/2020] [Indexed: 12/28/2022]
Abstract
Ethanol consumption impairs learning and memory through disturbances of NMDA-type glutamate receptor-dependent synaptic plasticity (long-term depression [LTD] and long-term potentiation [LTP]) in the hippocampus. Recently, we demonstrated that two ethanol binge-like episodes in young adult rats selectively blocked NMDA-LTD in hippocampal slices, increased NMDA receptor sensitivity to a GluN2B subunit antagonist, and induced cognitive deficits. Here, using knockout adult mice, we show that a stress-responsive transcription factor of the heat shock factor family, HSF2, which is involved in the perturbation of brain development induced by ethanol, participates in these processes. In the absence of ethanol, hsf2-/- mice show a selective loss of LTD in the hippocampus, which is associated with an increased sensitivity of NMDA-field excitatory postsynaptic potentials (fEPSPs) to a GluN2B antagonist, compared with wild-type (WT) mice. These results suggest that HSF2 is required for proper glutamatergic synaptic transmission and LTD plasticity. After 1 month of chronic ethanol consumption in a two-bottle choice paradigm, WT mice showed an increase in hippocampal synaptic transmission, an enhanced sensitivity to GluN2B antagonist, and a blockade of LTD. In contrast, such modulation of synaptic transmission and plasticity were absent in hsf2-/- mice. We conclude that HSF2 is an important mediator of both glutamatergic neurotransmission and synaptic plasticity in basal conditions and also mediates ethanol-induced neuroadaptations of the hippocampus network after chronic ethanol intake.
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Affiliation(s)
- Ichrak Drissi
- INSERM, UMR 1247 GRAP, Groupe de Recherche sur l'Alcool et les Pharmacodépendances Univ Picardie Jules Verne, Centre Universitaire de Recherche en Santé (CURS) Amiens France
- Cambridge Institute for Medical Research University of Cambridge, Cambridge Biomedical Campus Cambridge UK
| | - Chloé Deschamps
- INSERM, UMR 1247 GRAP, Groupe de Recherche sur l'Alcool et les Pharmacodépendances Univ Picardie Jules Verne, Centre Universitaire de Recherche en Santé (CURS) Amiens France
| | - Rachel Alary
- INSERM, UMR 1247 GRAP, Groupe de Recherche sur l'Alcool et les Pharmacodépendances Univ Picardie Jules Verne, Centre Universitaire de Recherche en Santé (CURS) Amiens France
| | - Alexandre Robert
- INSERM, UMR 1247 GRAP, Groupe de Recherche sur l'Alcool et les Pharmacodépendances Univ Picardie Jules Verne, Centre Universitaire de Recherche en Santé (CURS) Amiens France
| | - Véronique Dubreuil
- Université de Paris, UMR 7216 Epigenetics and Cell Fate, CNRS Paris France
- Département Hospitalo‐Universitaire DHU PROTECT Paris France
| | - Anne Le Mouël
- Université de Paris, UMR 7216 Epigenetics and Cell Fate, CNRS Paris France
- Département Hospitalo‐Universitaire DHU PROTECT Paris France
| | - Myriame Mohammed
- Université de Paris, UMR 7216 Epigenetics and Cell Fate, CNRS Paris France
- Département Hospitalo‐Universitaire DHU PROTECT Paris France
| | - Délara Sabéran‐Djoneidi
- Université de Paris, UMR 7216 Epigenetics and Cell Fate, CNRS Paris France
- Département Hospitalo‐Universitaire DHU PROTECT Paris France
| | - Valérie Mezger
- Université de Paris, UMR 7216 Epigenetics and Cell Fate, CNRS Paris France
- Département Hospitalo‐Universitaire DHU PROTECT Paris France
| | - Mickael Naassila
- INSERM, UMR 1247 GRAP, Groupe de Recherche sur l'Alcool et les Pharmacodépendances Univ Picardie Jules Verne, Centre Universitaire de Recherche en Santé (CURS) Amiens France
| | - Olivier Pierrefiche
- INSERM, UMR 1247 GRAP, Groupe de Recherche sur l'Alcool et les Pharmacodépendances Univ Picardie Jules Verne, Centre Universitaire de Recherche en Santé (CURS) Amiens France
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48
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Hafner G, Guy J, Witte M, Truschow P, Rüppel A, Sirmpilatze N, Dadarwal R, Boretius S, Staiger JF. Increased Callosal Connectivity in Reeler Mice Revealed by Brain-Wide Input Mapping of VIP Neurons in Barrel Cortex. Cereb Cortex 2021; 31:1427-1443. [PMID: 33135045 PMCID: PMC7869096 DOI: 10.1093/cercor/bhaa280] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 08/25/2020] [Accepted: 08/25/2020] [Indexed: 01/22/2023] Open
Abstract
The neocortex is composed of layers. Whether layers constitute an essential framework for the formation of functional circuits is not well understood. We investigated the brain-wide input connectivity of vasoactive intestinal polypeptide (VIP) expressing neurons in the reeler mouse. This mutant is characterized by a migration deficit of cortical neurons so that no layers are formed. Still, neurons retain their properties and reeler mice show little cognitive impairment. We focused on VIP neurons because they are known to receive strong long-range inputs and have a typical laminar bias toward upper layers. In reeler, these neurons are more dispersed across the cortex. We mapped the brain-wide inputs of VIP neurons in barrel cortex of wild-type and reeler mice with rabies virus tracing. Innervation by subcortical inputs was not altered in reeler, in contrast to the cortical circuitry. Numbers of long-range ipsilateral cortical inputs were reduced in reeler, while contralateral inputs were strongly increased. Reeler mice had more callosal projection neurons. Hence, the corpus callosum was larger in reeler as shown by structural imaging. We argue that, in the absence of cortical layers, circuits with subcortical structures are maintained but cortical neurons establish a different network that largely preserves cognitive functions.
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Affiliation(s)
- Georg Hafner
- Institute for Neuroanatomy, University Medical Center, Georg-August-University Göttingen, 37075 Göttingen, Germany
| | - Julien Guy
- Institute for Neuroanatomy, University Medical Center, Georg-August-University Göttingen, 37075 Göttingen, Germany
| | - Mirko Witte
- Institute for Neuroanatomy, University Medical Center, Georg-August-University Göttingen, 37075 Göttingen, Germany
| | - Pavel Truschow
- Institute for Neuroanatomy, University Medical Center, Georg-August-University Göttingen, 37075 Göttingen, Germany
| | - Alina Rüppel
- Institute for Neuroanatomy, University Medical Center, Georg-August-University Göttingen, 37075 Göttingen, Germany
| | - Nikoloz Sirmpilatze
- Functional Imaging Laboratory, German Primate Center, Leibniz Institute for Primate Research, 37077 Göttingen, Germany
| | - Rakshit Dadarwal
- Functional Imaging Laboratory, German Primate Center, Leibniz Institute for Primate Research, 37077 Göttingen, Germany
| | - Susann Boretius
- Functional Imaging Laboratory, German Primate Center, Leibniz Institute for Primate Research, 37077 Göttingen, Germany
| | - Jochen F Staiger
- Institute for Neuroanatomy, University Medical Center, Georg-August-University Göttingen, 37075 Göttingen, Germany
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49
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Mayén-Lobo YG, Martínez-Magaña JJ, Pérez-Aldana BE, Ortega-Vázquez A, Genis-Mendoza AD, Dávila-Ortiz de Montellano DJ, Soto-Reyes E, Nicolini H, López-López M, Monroy-Jaramillo N. Integrative Genomic-Epigenomic Analysis of Clozapine-Treated Patients with Refractory Psychosis. Pharmaceuticals (Basel) 2021; 14:118. [PMID: 33557049 PMCID: PMC7913835 DOI: 10.3390/ph14020118] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 01/19/2021] [Accepted: 01/26/2021] [Indexed: 02/07/2023] Open
Abstract
Clozapine (CLZ) is the only antipsychotic drug that has been proven to be effective in patients with refractory psychosis, but it has also been proposed as an effective mood stabilizer; however, the complex mechanisms of action of CLZ are not yet fully known. To find predictors of CLZ-associated phenotypes (i.e., the metabolic ratio, dosage, and response), we explore the genomic and epigenomic characteristics of 44 patients with refractory psychosis who receive CLZ treatment based on the integration of polygenic risk score (PRS) analyses in simultaneous methylome profiles. Surprisingly, the PRS for bipolar disorder (BD-PRS) was associated with the CLZ metabolic ratio (pseudo-R2 = 0.2080, adjusted p-value = 0.0189). To better explain our findings in a biological context, we assess the protein-protein interactions between gene products with high impact variants in the top enriched pathways and those exhibiting differentially methylated sites. The GABAergic synapse pathway was found to be enriched in BD-PRS and was associated with the CLZ metabolic ratio. Such interplay supports the use of CLZ as a mood stabilizer and not just as an antipsychotic. Future studies with larger sample sizes should be pursued to confirm the findings of this study.
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Affiliation(s)
- Yerye Gibrán Mayén-Lobo
- Department of Biological Systems, Metropolitan Autonomous University-Xochimilco, Mexico City 04960, Mexico; (Y.G.M.-L.); (B.E.P.-A.); (A.O.-V.); (M.L.-L.)
- Department of Genetics, National Institute of Neurology and Neurosurgery, “Manuel Velasco Suárez”, Mexico City 14269, Mexico;
| | - José Jaime Martínez-Magaña
- Genomics of Psychiatric and Neurodegenerative Diseases Laboratory, Instituto Nacional de Medicina Genómica, SSA, Mexico City 14610, Mexico; (J.J.M.-M.); (A.D.G.-M.); (H.N.)
| | - Blanca Estela Pérez-Aldana
- Department of Biological Systems, Metropolitan Autonomous University-Xochimilco, Mexico City 04960, Mexico; (Y.G.M.-L.); (B.E.P.-A.); (A.O.-V.); (M.L.-L.)
| | - Alberto Ortega-Vázquez
- Department of Biological Systems, Metropolitan Autonomous University-Xochimilco, Mexico City 04960, Mexico; (Y.G.M.-L.); (B.E.P.-A.); (A.O.-V.); (M.L.-L.)
| | - Alma Delia Genis-Mendoza
- Genomics of Psychiatric and Neurodegenerative Diseases Laboratory, Instituto Nacional de Medicina Genómica, SSA, Mexico City 14610, Mexico; (J.J.M.-M.); (A.D.G.-M.); (H.N.)
| | | | - Ernesto Soto-Reyes
- Natural Sciences Department, Universidad Autónoma Metropolitana-Cuajimalpa, Mexico City 05348, Mexico;
| | - Humberto Nicolini
- Genomics of Psychiatric and Neurodegenerative Diseases Laboratory, Instituto Nacional de Medicina Genómica, SSA, Mexico City 14610, Mexico; (J.J.M.-M.); (A.D.G.-M.); (H.N.)
- Grupo de Estudios Médicos y Familiares Carracci, Mexico City 03740, Mexico
| | - Marisol López-López
- Department of Biological Systems, Metropolitan Autonomous University-Xochimilco, Mexico City 04960, Mexico; (Y.G.M.-L.); (B.E.P.-A.); (A.O.-V.); (M.L.-L.)
| | - Nancy Monroy-Jaramillo
- Department of Genetics, National Institute of Neurology and Neurosurgery, “Manuel Velasco Suárez”, Mexico City 14269, Mexico;
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50
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Chen H, Chen F, Zhang M, Chen Y, Cui L, Liang C. A Review of APOE Genotype-Dependent Autophagic Flux Regulation in Alzheimer's Disease. J Alzheimers Dis 2021; 84:535-555. [PMID: 34569952 DOI: 10.3233/jad-210602] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Autophagy is a basic physiological process maintaining cell renewal, the degradation of dysfunctional organelles, and the clearance of abnormal proteins and has recently been identified as a main mechanism underlying the onset and progression of Alzheimer's disease (AD). The APOE ɛ4 genotype is the strongest genetic determinant of AD pathogenesis and initiates autophagic flux at different times. This review synthesizes the current knowledge about the potential pathogenic effects of ApoE4 on autophagy and describes its associations with the biological hallmarks of autophagy and AD from a novel perspective. Via a remarkable variety of widely accepted signaling pathway markers, such as mTOR, TFEB, SIRT1, LC3, p62, LAMP1, LAMP2, CTSD, Rabs, and V-ATPase, ApoE isoforms differentially modulate autophagy initiation; membrane expansion, recruitment, and enclosure; autophagosome and lysosome fusion; and lysosomal degradation. Although the precise pathogenic mechanism varies for different genes and proteins, the dysregulation of autophagic flux is a key mechanism on which multiple pathogenic processes converge.
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Affiliation(s)
- Huiyi Chen
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
- Yuebei People's Hospital, Affiliated Hospital of Shantou University Medical College, Shaoguan, China
| | - Feng Chen
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Miaoping Zhang
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Yanting Chen
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Lili Cui
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Chunmei Liang
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
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