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Tsai YY, Shen CL, D D, Tsai CY, Tarn WY. Activation of TrkB signaling mitigates cerebellar anomalies caused by Rbm4-Bdnf deficiency. Commun Biol 2023; 6:910. [PMID: 37670183 PMCID: PMC10480162 DOI: 10.1038/s42003-023-05294-z] [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: 01/15/2023] [Accepted: 08/28/2023] [Indexed: 09/07/2023] Open
Abstract
A molecular and functional link between neurotrophin signaling and cerebellar foliation is lacking. Here we show that constitutive knockout of two homologous genes encoding the RNA binding protein RBM4 results in foliation defects at cerebellar lobules VI-VII and delayed motor learning in mice. Moreover, the features of Rbm4 double knockout (dKO), including impaired differentiation of cerebellar granule cells and dendritic arborization of Purkinje cells, are reminiscent of neurotrophin deficiency. Loss of RBM4 indeed reduced brain-derived neurotrophic factor (BDNF). RBM4 promoted the expression of BDNF and full-length TrkB, implicating RBM4 in efficient BDNF-TrkB signaling. Finally, prenatal supplementation with 7,8-dihydroxyflavone, a TrkB agonist, restored granule cell differentiation, Purkinje cell dendritic complexity and foliation-the intercrural fissure in particular-in the neonatal cerebellum of Rbm4dKO mice, which also showed improved motor learning in adulthood. This study provides evidence that prenatal activation of TrkB signaling ameliorates cerebellar malformation caused by BDNF deficiency.
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Affiliation(s)
- Yu-Young Tsai
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
- Columbia University in the City of New York, New York, US
| | - Chiu-Lun Shen
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
- Institute of Molecular Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Dhananjaya D
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Ching-Yen Tsai
- Institute of Molecular Biology, Academia Sinica, Taipei, Taiwan
| | - Woan-Yuh Tarn
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan.
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Vitalis T, Dauphinot L, Gressens P, Potier MC, Mariani J, Gaspar P. RORα Coordinates Thalamic and Cortical Maturation to Instruct Barrel Cortex Development. Cereb Cortex 2019; 28:3994-4007. [PMID: 29040410 DOI: 10.1093/cercor/bhx262] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The retinoic acid-related orphan receptor alpha (RORα) is well-known for its role in cerebellar development and maturation as revealed in staggerer mice. However, its potential involvement in the development of other brain regions has hardly been assessed. Here, we describe a new role of RORα in the development of primary somatosensory maps. Staggerer mice showed a complete disruption of barrels in the somatosensory cortex and of barreloids in the thalamus. This phenotype results from a severe reduction of thalamocortical axon (TCA) branching and a defective maturation of layer IV cortical neurons during postnatal development. Conditional deletion of RORα was conducted in the thalamus or the cortex to determine the specific contribution of RORα in each of these structures to these phenotypes. This showed that RORα is cell-autonomously required in the thalamus for the organization of TCAs into periphery-related clusters and in the somatosensory cortex for the dendritic maturation of layer IV neurons. Microarray analyses revealed that Sema7a, Neph, and Adcy8 are RORα regulated genes that could be implicated in TCA and cortical maturation. Overall, our study outlines a new role of RORα for the coordinated maturation of the somatosensory thalamus and cortex during the assembly of columnar barrel structures.
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Affiliation(s)
- Tania Vitalis
- PROTECT, INSERM, Université Paris Diderot, Sorbonne Paris Cité, Paris, France
- Université Pierre et Marie Curie, Sorbonne Université, Paris, France
| | - Luce Dauphinot
- Université Pierre et Marie Curie, Sorbonne Université, Paris, France
- CNRS UMR 7225, INSERM U1127, Institut du Cerveau et de la Moelle, Paris, France
| | - Pierre Gressens
- PROTECT, INSERM, Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Marie-Claude Potier
- Université Pierre et Marie Curie, Sorbonne Université, Paris, France
- CNRS UMR 7225, INSERM U1127, Institut du Cerveau et de la Moelle, Paris, France
| | - Jean Mariani
- Université Pierre et Marie Curie, Sorbonne Université, Paris, France
- CNRS, UMR 8256, Institut de Biologie de Paris Seine (IBPS), Biological adaptation and ageing (B2A), Team Brain Development, Repair and Ageing, Paris, France
- APHP, DHU FAST, Institut de la Longévité, Ivry-Sur-Seine, France
| | - Patricia Gaspar
- Université Pierre et Marie Curie, Sorbonne Université, Paris, France
- INSERM, UMR-S839, Institut du Fer à Moulin, Paris, France
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Is there an "antisocial" cerebellum? Evidence from disorders other than autism characterized by abnormal social behaviours. Prog Neuropsychopharmacol Biol Psychiatry 2019; 89:1-8. [PMID: 30153496 DOI: 10.1016/j.pnpbp.2018.08.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 08/23/2018] [Accepted: 08/24/2018] [Indexed: 12/13/2022]
Abstract
The cerebellum is a hindbrain structure which involvement in functions not related to motor control and planning is being increasingly recognized in the last decades. Studies on Autism Spectrum Disorders (ASD) have reported cerebellar involvement on these conditions characterized by social deficits and repetitive motor behavior patterns. Although such an involvement hints at a possible cerebellar participation in the social domain, the fact that ASD patients present both social and motor deficits impedes drawing any firm conclusion regarding cerebellar involvement in pathological social behaviours, probably influenced by the classical view of the cerebellum as a purely "motor" brain structure. Here, we suggest the cerebellum can be a key node for the production and control of normal and particularly aberrant social behaviours, as indicated by its involvement in other neuropsychiatric disorders which main symptom is deregulated social behaviour. Therefore, in this work, we briefly review cerebellar involvement in social behavior in rodent models, followed by discussing the findings linking the cerebellum to those other psychiatric conditions characterized by defective social behaviours. Finally, possible commonalities between the studies and putative underlying impaired functions will be discussed and experimental approaches both in patients and experimental animals will also be proposed, aimed at stimulating research on the role of the cerebellum in social behaviours and disorders characterized by social impairments, which, if successful, will definitely help reinforcing the proposed cerebellar involvement in the social domain.
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Tantra M, Guo L, Kim J, Zainolabidin N, Eulenburg V, Augustine GJ, Chen AI. Conditional deletion of Cadherin 13 perturbs Golgi cells and disrupts social and cognitive behaviors. GENES, BRAIN, AND BEHAVIOR 2018; 17:e12466. [PMID: 29446202 PMCID: PMC6635760 DOI: 10.1111/gbb.12466] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 02/02/2018] [Accepted: 02/05/2018] [Indexed: 12/21/2022]
Abstract
Inhibitory interneurons mediate the gating of synaptic transmission and modulate the activities of neural circuits. Disruption of the function of inhibitory networks in the forebrain is linked to impairment of social and cognitive behaviors, but the involvement of inhibitory interneurons in the cerebellum has not been assessed. We found that Cadherin 13 (Cdh13), a gene implicated in autism spectrum disorder and attention-deficit hyperactivity disorder, is specifically expressed in Golgi cells within the cerebellar cortex. To assess the function of Cdh13 and utilize the manipulation of Cdh13 expression in Golgi cells as an entry point to examine cerebellar-mediated function, we generated mice carrying Cdh13-floxed alleles and conditionally deleted Cdh13 with GlyT2::Cre mice. Loss of Cdh13 results in a decrease in the expression/localization of GAD67 and reduces spontaneous inhibitory postsynaptic current (IPSC) in cerebellar Golgi cells without disrupting spontaneous excitatory postsynaptic current (EPSC). At the behavioral level, loss of Cdh13 in the cerebellum, piriform cortex and endopiriform claustrum have no impact on gross motor coordination or general locomotor behaviors, but leads to deficits in cognitive and social abilities. Mice lacking Cdh13 exhibit reduced cognitive flexibility and loss of preference for contact region concomitant with increased reciprocal social interactions. Together, our findings show that Cdh13 is critical for inhibitory function of Golgi cells, and that GlyT2::Cre-mediated deletion of Cdh13 in non-executive centers of the brain, such as the cerebellum, may contribute to cognitive and social behavioral deficits linked to neurological disorders.
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Affiliation(s)
- M. Tantra
- School of Biological SciencesNanyang Technological University (NTU)Singapore
- School of Life SciencesUniversity of WarwickCoventryUK
| | - L. Guo
- School of Biological SciencesNanyang Technological University (NTU)Singapore
- School of Life SciencesUniversity of WarwickCoventryUK
| | - J. Kim
- Lee Kong Chian School of MedicineNanyang Technological University (NTU)Singapore
| | - N. Zainolabidin
- School of Biological SciencesNanyang Technological University (NTU)Singapore
- School of Life SciencesUniversity of WarwickCoventryUK
| | - V. Eulenburg
- Institute of BiochemistryFriedrich‐Alexander University Erlangen‐NurembergErlangenGermany
| | - G. J. Augustine
- Lee Kong Chian School of MedicineNanyang Technological University (NTU)Singapore
- Institute of Molecular and Cell BiologySingapore
| | - A. I. Chen
- School of Biological SciencesNanyang Technological University (NTU)Singapore
- School of Life SciencesUniversity of WarwickCoventryUK
- Institute of Molecular and Cell BiologySingapore
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Liao YH, Chen CY, Chen CN, Wu CY, Tsai SC. An Amino Acids Mixture Attenuates Glycemic Impairment but not Affects Adiposity Development in Rats Fed with AGEs-containing Diet. Int J Med Sci 2018; 15:176-187. [PMID: 29333102 PMCID: PMC5765731 DOI: 10.7150/ijms.22008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 11/18/2017] [Indexed: 12/17/2022] Open
Abstract
Background: Unhealthy western dietary patterns lead to over-consumption of fat and advanced glycation end-products (AGEs), and these account for the developments of obesity, diabetes, and related metabolic disorders. Certain amino acids (AAs) have been recently demonstrated to improve glycemia and reduce adiposity. Therefore, our primary aims were to examine whether feeding an isoleucine-enriched AA mixture (4.5% AAs; Ile: 3.0%, Leu: 1.0%, Val: 0.2%, Arg: 0.3% in the drinking water) would affect adiposity development and prevent the impairments of glycemic control in rats fed with the fat/AGE-containing diet (FAD). Methods: Twenty-four male Sprague-Dawley rats were assigned into 1) control diet (CD, N = 8), 2) FAD diet (FAD, N = 8), and 3) FAD diet plus AA (FAD/AA, N = 8). After 9-weeks intervention, the glycemic control capacity (glucose level, ITT, and HbA1c levels), body composition, and spontaneous locomotor activity (SLA) were evaluated, and the fasting blood samples were collected for analyzing metabolic related hormones (insulin, leptin, adiponectin, and corticosterone). The adipose tissues were also surgically collected and weighed. Results: FAD rats showed significant increases in weight gain, body fat %, blood glucose, HbA1c, leptin, and area under the curve of glucose during insulin tolerance test (ITT-glucose-AUC) in compared with the CD rats. However, the fasting levels of blood glucose, HbA1c, leptin, and ITT-glucose-AUC did not differ between CD and FAD/AA rats. FAD/AA rats also showed a greater increase in serum testosterone. Conclusion: The amino acid mixture consisting of Ile, Leu, Val, and Arg showed clear protective benefits on preventing the FAD-induced obesity and impaired glycemic control.
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Affiliation(s)
- Yi-Hung Liao
- Department of Exercise and Health Science, National Taipei University of Nursing and Health Sciences, Taipei 11219, Taiwan
| | - Chung-Yu Chen
- Department of Exercise and Health Sciences, University of Taipei, Taipei 11153, Taiwan
| | - Chiao-Nan Chen
- Department of Physical Therapy and Assistive Technology, School of Biomedical Science and Engineering, National Yang-Ming University, Taipei City 112, Taiwan
| | - Chia-Ying Wu
- Department of Exercise and Health Science, National Taipei University of Nursing and Health Sciences, Taipei 11219, Taiwan
| | - Shiow-Chwen Tsai
- Institute of Sports Sciences, University of Taipei, Taipei 11153, Taiwan
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Badura A, De Zeeuw CI. Cerebellar Granule Cells: Dense, Rich and Evolving Representations. Curr Biol 2017; 27:R415-R418. [PMID: 28586665 DOI: 10.1016/j.cub.2017.04.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
For half a century it was assumed that granule cells use ultra-sparse encoding, but now in vivo calcium-imaging studies have shown that large ensembles of granule cells provide dense signals, which themselves evolve and adapt during training.
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Affiliation(s)
| | - Chris I De Zeeuw
- Netherlands Institute for Neuroscience, Amsterdam, The Netherlands; Department of Neuroscience, Erasmus MC, Rotterdam, The Netherlands.
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Bibollet-Bahena O, Okafuji T, Hokamp K, Tear G, Mitchell KJ. A dual-strategy expression screen for candidate connectivity labels in the developing thalamus. PLoS One 2017; 12:e0177977. [PMID: 28558017 PMCID: PMC5448750 DOI: 10.1371/journal.pone.0177977] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 05/05/2017] [Indexed: 12/13/2022] Open
Abstract
The thalamus or “inner chamber” of the brain is divided into ~30 discrete nuclei, with highly specific patterns of afferent and efferent connectivity. To identify genes that may direct these patterns of connectivity, we used two strategies. First, we used a bioinformatics pipeline to survey the predicted proteomes of nematode, fruitfly, mouse and human for extracellular proteins containing any of a list of motifs found in known guidance or connectivity molecules. Second, we performed clustering analyses on the Allen Developing Mouse Brain Atlas data to identify genes encoding surface proteins expressed with temporal profiles similar to known guidance or connectivity molecules. In both cases, we then screened the resultant genes for selective expression patterns in the developing thalamus. These approaches identified 82 candidate connectivity labels in the developing thalamus. These molecules include many members of the Ephrin, Eph-receptor, cadherin, protocadherin, semaphorin, plexin, Odz/teneurin, Neto, cerebellin, calsyntenin and Netrin-G families, as well as diverse members of the immunoglobulin (Ig) and leucine-rich receptor (LRR) superfamilies, receptor tyrosine kinases and phosphatases, a variety of growth factors and receptors, and a large number of miscellaneous membrane-associated or secreted proteins not previously implicated in axonal guidance or neuronal connectivity. The diversity of their expression patterns indicates that thalamic nuclei are highly differentiated from each other, with each one displaying a unique repertoire of these molecules, consistent with a combinatorial logic to the specification of thalamic connectivity.
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Affiliation(s)
| | - Tatsuya Okafuji
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland
| | - Karsten Hokamp
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland
| | - Guy Tear
- Department of Developmental Neurobiology, New Hunt’s House, Guy’s Campus, King’s College, London, United Kingdom
| | - Kevin J. Mitchell
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland
- Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland
- * E-mail:
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Different Degrees of Iodine Deficiency Inhibit Differentiation of Cerebellar Granular Cells in Rat Offspring, via BMP-Smad1/5/8 Signaling. Mol Neurobiol 2015; 53:4606-17. [PMID: 26307610 DOI: 10.1007/s12035-015-9382-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Accepted: 07/28/2015] [Indexed: 12/16/2022]
Abstract
Iodine deficiency (ID) during development results in dysfunction of the central nervous system (CNS) and affects psychomotor and motor function. It is worth noting that maternal mild and marginal ID tends to be the most common reason of preventable neurodevelopmental impairment, via a mechanism that has not been elucidated. Therefore, our aim was to study the effects of developmental mild and marginal ID on the differentiation of cerebellar granule cells (GCs) and investigate the activation of BMP-Smad1/5/8 signaling, which is crucial for the development and differentiation of cerebellum. Three developmental rat models were created by feeding dam rats with a diet deficient in iodine and deionized water supplemented with potassium iodide. Our results showed that different degrees of ID inhibited and delayed the differentiation of cerebellar GCs on postnatal day (PN) 7, PN14, and PN21. Moreover, mild and severe ID reduced the expression of BMP2 and p-Smad1/5/8, and increased the levels of Id2 on PN7, PN14, and PN21. However, marginal ID rarely altered expression of these proteins in the offspring. Our study supports the hypothesis that mild and severe ID during development inhibits the differentiation of cerebellar GCs, which may be ascribed to the down-regulation of BMP-Smad1/5/8 signaling and the overexpression of Id2. Furthermore, it was speculated that maternal marginal ID rarely affected the differentiation of cerebellar GCs in the offspring.
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