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Che F, Li C, Zhang L, Qian C, Mo L, Li B, Wu H, Wang L, Yang Y. Novel FOXP2 variant associated with speech and language dysfunction in a Chinese family and literature review. J Appl Genet 2024; 65:367-373. [PMID: 38418803 DOI: 10.1007/s13353-024-00849-0] [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: 01/23/2024] [Revised: 02/21/2024] [Accepted: 02/22/2024] [Indexed: 03/02/2024]
Abstract
Since its initial identification, the Forkhead Box P2 gene (FOXP2) has maintained its singular status as the archetypal monogenic determinant implicated in Mendelian forms of human speech and language impairments. Despite the passage of two decades subsequent to its discovery, extant literature remains disproportionately sparse with regard to case-specific instances and loci of mutational perturbations. The objective of the current investigation centers on furnishing an enriched delineation of both its clinical manifestations and its mutational heterogeneity. Clinical phenotypes and peripheral blood samples were assiduously amassed from familial subjects. Whole-exome sequencing and Sanger sequencing methodologies were deployed for the unambiguous identification of potential genetic variants and for corroborating their co-segregation within the family pedigree. An exhaustive review of published literature focusing on patients manifesting speech and language disorders consequent to FOXP2 genetic anomalies was also undertaken. The investigation yielded the identification of a novel heterozygous variant, c.661del (p.L221Ffs*41), localized within the FOXP2 gene in the proband, an inheritance from his symptomatic mother. The proband presented with an array of symptoms, encompassing dysarthric speech, deficits in instruction comprehension, and communicative impediments. In comparison, the mother exhibited attenuated symptoms, including rudimentary verbalization capabilities punctuated by pronounced stuttering and dysarthria. A comprehensive analysis of articles archived in the Human Gene Mutation Database (HGMD) classified under "DM" disclosed the existence of 74 patients inclusive of the subjects under current examination, sub-divided into 19 patients with null variants, 5 patients with missense variants, and 50 patients with gross deletions or complex genomic rearrangements. A conspicuous predominance of delayed speech, impoverished current verbal abilities, verbal comprehension deficits, and learning difficulties were observed in patients harboring null or missense FOXP2 variants, as compared to their counterparts with gross deletions or complex rearrangements. Developmental delays, hypotonia, and craniofacial aberrations were exclusive to the latter cohort. The elucidated findings augment the existing corpus of knowledge on the genetic architecture influencing both the proband and his mother within this specified familial context. Of critical importance, these discoveries furnish a robust molecular framework conducive to the prenatal diagnostic evaluations of prospective progeny within this familial lineage.
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Affiliation(s)
- Fengyu Che
- Shaanxi Institute for Pediatric Diseases, Xi'an Children's Hospital, Xi'an, China
| | - Chenhao Li
- Medical School of Chinese PLA, Beijing, China
| | - Liyu Zhang
- Shaanxi Institute for Pediatric Diseases, Xi'an Children's Hospital, Xi'an, China
| | - Chenxi Qian
- Southern Medical University, Guangzhou, China
| | - Lidangzhi Mo
- Shaanxi Institute for Pediatric Diseases, Xi'an Children's Hospital, Xi'an, China
| | - Benchang Li
- Shaanxi Institute for Pediatric Diseases, Xi'an Children's Hospital, Xi'an, China
| | - Haibin Wu
- Shaanxi Institute for Pediatric Diseases, Xi'an Children's Hospital, Xi'an, China
| | - Lifang Wang
- Department of Child Health Care, Xi'an Children's Hospital, Xi'an, China.
| | - Ying Yang
- Shaanxi Institute for Pediatric Diseases, Xi'an Children's Hospital, Xi'an, China.
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He BH, Yang YH, Hsiao BW, Lin WT, Chuang YF, Chen SY, Liu FC. Foxp2 Is Required for Nucleus Accumbens-mediated Multifaceted Limbic Function. Neuroscience 2024; 542:33-46. [PMID: 38354901 DOI: 10.1016/j.neuroscience.2024.02.004] [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: 10/21/2023] [Revised: 01/04/2024] [Accepted: 02/07/2024] [Indexed: 02/16/2024]
Abstract
The forkhead box protein P2 (Foxp2), initially identified for its role in speech and language development, plays an important role in neural development. Previous studies investigated the function of the Foxp2 gene by deleting or mutating Foxp2 from developmental stages. Little is known about its physiological function in adult brains. Although Foxp2 has been well studied in the dorsal striatum, its function in the nucleus accumbens (NAc) of the ventral striatum remains elusive. Here, we examine the physiological function of Foxp2 in NAc of mouse brains. We conditionally knocked out Foxp2 by microinjections of AAV-EGFP-Cre viruses into the medial shell of NAc of Foxp2 floxed (cKO) mice. Immunostaining showed increased c-Fos positive cells in cKO NAc at basal levels, suggesting an abnormality in Foxp2-deficient NAc cells. Unbiased behavioral profiling of Foxp2 cKO mice showed abnormalities in limbic-associated function. Foxp2 cKO mice exhibited abnormal social novelty without preference for interaction with strangers and familiar mice. In appetitive reward learning, Foxp2 cKO mice failed to learn the time expectancy of food delivery. In fear learning, Foxp2 cKO mice exhibited abnormal increases in freezing levels in response to tone paired with foot shock during fear conditioning. The extinction of the fear response was also altered in Foxp2 cKO mice. In contrast, conditional knockout of Foxp2 in NAc did not affect locomotion, motor coordination, thermal pain sensation, anxiety- and depression-like behaviors. Collectively, our study suggests that Foxp2 has a multifaceted physiological role in NAc in the regulation of limbic function in the adult brain.
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Affiliation(s)
- Bo-Han He
- Institute of Neuroscience, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
| | - Ya-Hui Yang
- Institute of Neuroscience, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
| | - Bo-Wen Hsiao
- Institute of Neuroscience, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
| | - Wan-Ting Lin
- Institute of Neuroscience, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
| | - Yi-Fang Chuang
- Institute of Public Health, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
| | - Shih-Yun Chen
- Institute of Neuroscience, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
| | - Fu-Chin Liu
- Institute of Neuroscience, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan.
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Kuo HY, Chen SY, Huang RC, Takahashi H, Lee YH, Pang HY, Wu CH, Graybiel AM, Liu FC. Speech- and language-linked FOXP2 mutation targets protein motors in striatal neurons. Brain 2023; 146:3542-3557. [PMID: 37137515 PMCID: PMC10393416 DOI: 10.1093/brain/awad090] [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: 09/21/2022] [Revised: 01/13/2023] [Accepted: 02/02/2023] [Indexed: 05/05/2023] Open
Abstract
Human speech and language are among the most complex motor and cognitive abilities. The discovery of a mutation in the transcription factor FOXP2 in KE family members with speech disturbances has been a landmark example of the genetic control of vocal communication in humans. Cellular mechanisms underlying this control have remained unclear. By leveraging FOXP2 mutation/deletion mouse models, we found that the KE family FOXP2R553H mutation directly disables intracellular dynein-dynactin 'protein motors' in the striatum by induction of a disruptive high level of dynactin1 that impairs TrkB endosome trafficking, microtubule dynamics, dendritic outgrowth and electrophysiological activity in striatal neurons alongside vocalization deficits. Dynactin1 knockdown in mice carrying FOXP2R553H mutations rescued these cellular abnormalities and improved vocalization. We suggest that FOXP2 controls vocal circuit formation by regulating protein motor homeostasis in striatal neurons, and that its disruption could contribute to the pathophysiology of FOXP2 mutation/deletion-associated speech disorders.
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Affiliation(s)
- Hsiao-Ying Kuo
- Institute of Neuroscience, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
- Institute of Anatomy and Cell Biology, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
| | - Shih-Yun Chen
- Institute of Neuroscience, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
| | - Rui-Chi Huang
- Institute of Neuroscience, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
| | - Hiroshi Takahashi
- Department of Neurology, National Hospital Organization, Tottori Medical Center, Tottori 689-0203, Japan
| | - Yen-Hui Lee
- Institute of Neuroscience, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
| | - Hao-Yu Pang
- Institute of Neuroscience, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
| | - Cheng-Hsi Wu
- Institute of Neuroscience, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
| | - Ann M Graybiel
- McGovern Institute for Brain Research and Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Fu-Chin Liu
- Institute of Neuroscience, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
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Chen X, Saiyin H, Liu Y, Wang Y, Li X, Ji R, Ma L. Human striatal organoids derived from pluripotent stem cells recapitulate striatal development and compartments. PLoS Biol 2022; 20:e3001868. [PMID: 36395338 PMCID: PMC9714809 DOI: 10.1371/journal.pbio.3001868] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 12/01/2022] [Accepted: 10/05/2022] [Indexed: 11/18/2022] Open
Abstract
The striatum links neuronal circuits in the human brain, and its malfunction causes neuronal disorders such as Huntington's disease (HD). A human striatum model that recapitulates fetal striatal development is vital to decoding the pathogenesis of striatum-related neurological disorders and developing therapeutic strategies. Here, we developed a method to construct human striatal organoids (hStrOs) from human pluripotent stem cells (hPSCs), including hStrOs-derived assembloids. Our hStrOs partially replicated the fetal striatum and formed striosome and matrix-like compartments in vitro. Single-cell RNA sequencing revealed distinct striatal lineages in hStrOs, diverging from dorsal forebrain fate. Using hStrOs-derived assembloids, we replicated the striatal targeting projections from different brain parts. Furthermore, hStrOs can serve as hosts for striatal neuronal allografts to test allograft neuronal survival and functional integration. Our hStrOs are suitable for studying striatal development and related disorders, characterizing the neural circuitry between different brain regions, and testing therapeutic strategies.
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Affiliation(s)
- Xinyu Chen
- Department of Anatomy and Histology & Embryology, School of Basic Medical Sciences, Fudan University, Shanghai, P.R. China
| | - Hexige Saiyin
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, P.R. China
| | - Yang Liu
- Department of Anatomy and Histology & Embryology, School of Basic Medical Sciences, Fudan University, Shanghai, P.R. China
| | - Yuqi Wang
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, P.R. China
| | - Xuan Li
- The Fifth Affiliated Hospital Sun Yat-Sen University, Zhuhai, P.R. China
| | - Rong Ji
- Department of Neurology, Huadong Hospital, Fudan University, Shanghai, P.R. China
| | - Lixiang Ma
- Department of Anatomy and Histology & Embryology, School of Basic Medical Sciences, Fudan University, Shanghai, P.R. China
- * E-mail:
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Increased locomotor activity via regulation of GABAergic signalling in foxp2 mutant zebrafish-implications for neurodevelopmental disorders. Transl Psychiatry 2021; 11:529. [PMID: 34650032 PMCID: PMC8517032 DOI: 10.1038/s41398-021-01651-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 09/08/2021] [Accepted: 09/29/2021] [Indexed: 12/14/2022] Open
Abstract
Recent advances in the genetics of neurodevelopmental disorders (NDDs) have identified the transcription factor FOXP2 as one of numerous risk genes, e.g. in autism spectrum disorders (ASD) and attention-deficit/hyperactivity disorder (ADHD). FOXP2 function is suggested to be involved in GABAergic signalling and numerous studies demonstrate that GABAergic function is altered in NDDs, thus disrupting the excitation/inhibition balance. Interestingly, GABAergic signalling components, including glutamate-decarboxylase 1 (Gad1) and GABA receptors, are putative transcriptional targets of FOXP2. However, the specific role of FOXP2 in the pathomechanism of NDDs remains elusive. Here we test the hypothesis that Foxp2 affects behavioural dimensions via GABAergic signalling using zebrafish as model organism. We demonstrate that foxp2 is expressed by a subset of GABAergic neurons located in brain regions involved in motor functions, including the subpallium, posterior tuberculum, thalamus and medulla oblongata. Using CRISPR/Cas9 gene-editing we generated a novel foxp2 zebrafish loss-of-function mutant that exhibits increased locomotor activity. Further, genetic and/or pharmacological disruption of Gad1 or GABA-A receptors causes increased locomotor activity, resembling the phenotype of foxp2 mutants. Application of muscimol, a GABA-A receptor agonist, rescues the hyperactive phenotype induced by the foxp2 loss-of-function. By reverse translation of the therapeutic effect on hyperactive behaviour exerted by methylphenidate, we note that application of methylphenidate evokes different responses in wildtype compared to foxp2 or gad1b loss-of-function animals. Together, our findings support the hypothesis that foxp2 regulates locomotor activity via GABAergic signalling. This provides one targetable mechanism, which may contribute to behavioural phenotypes commonly observed in NDDs.
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von Merten S, Pfeifle C, Künzel S, Hoier S, Tautz D. A humanized version of Foxp2 affects ultrasonic vocalization in adult female and male mice. GENES BRAIN AND BEHAVIOR 2021; 20:e12764. [PMID: 34342113 DOI: 10.1111/gbb.12764] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 07/02/2021] [Accepted: 07/31/2021] [Indexed: 01/03/2023]
Abstract
The transcription factor FoxP2 is involved in setting up the neuronal circuitry for vocal learning in mammals and birds and is thought to have played a special role in the evolution of human speech and language. It has been shown that an allele with a humanized version of the murine Foxp2 gene changes the ultrasonic vocalization of mouse pups compared to pups of the wild-type inbred strain. Here we tested if this humanized allele would also affect the ultrasonic vocalization of adult female and male mice. In a previous study, in which only male vocalization was considered and the mice were recorded under a restricted spatial and temporal regime, no difference in adult vocalization between genotypes was found. Here, we use a different test paradigm in which both female and male vocalizations are recorded in extended social contact. We found differences in temporal, spectral and syntactical parameters between the genotypes in both sexes, and between sexes. Mice carrying the humanized Foxp2 allele were using higher frequencies and more complex syllable types than mice of the corresponding wildtype inbred strain. Our results support the notion that the humanized Foxp2 allele has a differential effect on mouse ultrasonic vocalization. As mice carrying the humanized version of the Foxp2 gene show effects opposite to those of mice carrying disrupted or mutated alleles of this gene, we conclude that this mouse line represents an important model for the study of human speech and language evolution.
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Affiliation(s)
- Sophie von Merten
- CESAM - Centro de Estudos do Ambiente e do Mar, Departamento de Biologia Animal, Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal.,Department for Evolutionary Genetics, Max Planck Institute for Evolutionary Biology, Plön, Germany
| | - Christine Pfeifle
- Department for Evolutionary Genetics, Max Planck Institute for Evolutionary Biology, Plön, Germany
| | - Sven Künzel
- Department for Evolutionary Genetics, Max Planck Institute for Evolutionary Biology, Plön, Germany
| | - Svenja Hoier
- Department for Evolutionary Genetics, Max Planck Institute for Evolutionary Biology, Plön, Germany
| | - Diethard Tautz
- Department for Evolutionary Genetics, Max Planck Institute for Evolutionary Biology, Plön, Germany
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Carthy E, Ellender T. Histamine, Neuroinflammation and Neurodevelopment: A Review. Front Neurosci 2021; 15:680214. [PMID: 34335160 PMCID: PMC8317266 DOI: 10.3389/fnins.2021.680214] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Accepted: 06/18/2021] [Indexed: 12/16/2022] Open
Abstract
The biogenic amine, histamine, has been shown to critically modulate inflammatory processes as well as the properties of neurons and synapses in the brain, and is also implicated in the emergence of neurodevelopmental disorders. Indeed, a reduction in the synthesis of this neuromodulator has been associated with the disorders Tourette's syndrome and obsessive-compulsive disorder, with evidence that this may be through the disruption of the corticostriatal circuitry during development. Furthermore, neuroinflammation has been associated with alterations in brain development, e.g., impacting synaptic plasticity and synaptogenesis, and there are suggestions that histamine deficiency may leave the developing brain more vulnerable to proinflammatory insults. While most studies have focused on neuronal sources of histamine it remains unclear to what extent other (non-neuronal) sources of histamine, e.g., from mast cells and other sources, can impact brain development. The few studies that have started exploring this in vitro, and more limited in vivo, would indicate that non-neuronal released histamine and other preformed mediators can influence microglial-mediated neuroinflammation which can impact brain development. In this Review we will summarize the state of the field with regard to non-neuronal sources of histamine and its impact on both neuroinflammation and brain development in key neural circuits that underpin neurodevelopmental disorders. We will also discuss whether histamine receptor modulators have been efficacious in the treatment of neurodevelopmental disorders in both preclinical and clinical studies. This could represent an important area of future research as early modulation of histamine from neuronal as well as non-neuronal sources may provide novel therapeutic targets in these disorders.
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Affiliation(s)
- Elliott Carthy
- Department of Pharmacology, University of Oxford, Oxford, United Kingdom
| | - Tommas Ellender
- Department of Pharmacology, University of Oxford, Oxford, United Kingdom
- Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium
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Pogoda A, Chmielewska N, Maciejak P, Szyndler J. Transcriptional Dysregulation in Huntington's Disease: The Role in Pathogenesis and Potency for Pharmacological Targeting. Curr Med Chem 2021; 28:2783-2806. [PMID: 32628586 DOI: 10.2174/0929867327666200705225821] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 05/15/2020] [Accepted: 06/19/2020] [Indexed: 11/22/2022]
Abstract
Huntington's disease (HD) is an inherited neurodegenerative disorder caused by a mutation in the gene that encodes a critical cell regulatory protein, huntingtin (Htt). The expansion of cytosine-adenine-guanine (CAG) trinucleotide repeats causes improper folding of functional proteins and is an initial trigger of pathological changes in the brain. Recent research has indicated that the functional dysregulation of many transcription factors underlies the neurodegenerative processes that accompany HD. These disturbances are caused not only by the loss of wild-type Htt (WT Htt) function but also by the occurrence of abnormalities that result from the action of mutant Htt (mHtt). In this review, we aim to describe the role of transcription factors that are currently thought to be strongly associated with HD pathogenesis, namely, RE1-silencing transcription factor, also known as neuron-restrictive silencer factor (REST/NRSF), forkhead box proteins (FOXPs), peroxisome proliferator-activated receptor gamma coactivator-1a (PGC1α), heat shock transcription factor 1 (HSF1), and nuclear factor κ light-chain-enhancer of activated B cells (NF- κB). We also take into account the role of these factors in the phenotype of HD as well as potential pharmacological interventions targeting the analyzed proteins. Furthermore, we considered whether molecular manipulation resulting in changes in transcription factor function may have clinical potency for treating HD.
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Affiliation(s)
- Aleksandra Pogoda
- Faculty of Medicine, Medical University of Warsaw, Zwirki i Wigury Street 61, 02-097 Warsaw, Poland
| | - Natalia Chmielewska
- Department of Neurochemistry, Institute of Psychiatry and Neurology, Sobieskiego Street 9, 02-957 Warsaw, Poland
| | - Piotr Maciejak
- Department of Neurochemistry, Institute of Psychiatry and Neurology, Sobieskiego Street 9, 02-957 Warsaw, Poland
| | - Janusz Szyndler
- Department of Experimental and Clinical Pharmacology, Centre for Preclinical Research and Technology CePT, Medical University of Warsaw, Banacha Street 1B, 02-097 Warsaw, Poland
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Herrero MJ, Wang L, Hernandez-Pineda D, Banerjee P, Matos HY, Goodrich M, Panigrahi A, Smith NA, Corbin JG. Sex-Specific Social Behavior and Amygdala Proteomic Deficits in Foxp2 +/- Mutant Mice. Front Behav Neurosci 2021; 15:706079. [PMID: 34421555 PMCID: PMC8374433 DOI: 10.3389/fnbeh.2021.706079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 06/29/2021] [Indexed: 12/20/2022] Open
Abstract
In humans, mutations in the transcription factor encoding gene, FOXP2, are associated with language and Autism Spectrum Disorders (ASD), the latter characterized by deficits in social interactions. However, little is known regarding the function of Foxp2 in male or female social behavior. Our previous studies in mice revealed high expression of Foxp2 within the medial subnucleus of the amygdala (MeA), a limbic brain region highly implicated in innate social behaviors such as mating, aggression, and parental care. Here, using a comprehensive panel of behavioral tests in male and female Foxp2 +/- heterozygous mice, we investigated the role Foxp2 plays in MeA-linked innate social behaviors. We reveal significant deficits in olfactory processing, social interaction, mating, aggressive, and parental behaviors. Interestingly, some of these deficits are displayed in a sex-specific manner. To examine the consequences of Foxp2 loss of function specifically in the MeA, we conducted a proteomic analysis of microdissected MeA tissue. This analyses revealed putative sex differences expression of a host of proteins implicated in neuronal communication, connectivity, and dopamine signaling. Consistent with this, we discovered that MeA Foxp2-lineage cells were responsive to dopamine with differences between males and females. Thus, our findings reveal a central and sex-specific role for Foxp2 in social behavior and MeA function.
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Affiliation(s)
- Maria Jesus Herrero
- Center for Neuroscience Research, Children’s National Hospital, Washington, DC, United States
| | - Li Wang
- Center for Neuroscience Research, Children’s National Hospital, Washington, DC, United States
- *Correspondence: Li Wang Joshua G. Corbin
| | - David Hernandez-Pineda
- Center for Neuroscience Research, Children’s National Hospital, Washington, DC, United States
| | - Payal Banerjee
- Center for Genomic Medicine, Children’s National Hospital, Washington, DC, United States
| | - Heidi Y. Matos
- Center for Neuroscience Research, Children’s National Hospital, Washington, DC, United States
| | - Meredith Goodrich
- Center for Neuroscience Research, Children’s National Hospital, Washington, DC, United States
| | - Aswini Panigrahi
- Center for Cancer and Immunology Research, Children’s National Hospital, Washington, DC, United States
| | - Nathan Anthony Smith
- Center for Neuroscience Research, Children’s National Hospital, Washington, DC, United States
| | - Joshua G. Corbin
- Center for Neuroscience Research, Children’s National Hospital, Washington, DC, United States
- *Correspondence: Li Wang Joshua G. Corbin
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Du A, Wu X, Chen H, Bai QR, Han X, Liu B, Zhang X, Ding Z, Shen Q, Zhao C. Foxg1 Directly Represses Dbx1 to Confine the POA and Subsequently Regulate Ventral Telencephalic Patterning. Cereb Cortex 2020; 29:4968-4981. [PMID: 30843579 DOI: 10.1093/cercor/bhz037] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 02/01/2019] [Accepted: 02/11/2019] [Indexed: 12/17/2022] Open
Abstract
During early development, signaling centers, such as the cortical hem and the preoptic area (POA), are critical for telencephalic patterning. However, the mechanisms underlying the maintenance of signal centers are poorly understood. Here, we report that the transcription factor Foxg1 is required to confine the POA, a resource of Sonic Hedgehog (Shh) that is pivotal for ventral telencephalic development. Cell-specific deletion of Foxg1 achieved by crossing Foxg1fl/fl with Dbx1-cre or Nestin-CreER combined with tamoxifen induction results in a dramatic expansion of the POA accompanied by the significantly increased activity of the Shh signaling pathway. Ventral pattern formation was severely impaired. Moreover, we demonstrated that Foxg1 directly represses Dbx1 to restrict the POA. Furthermore, we found that the ventral pallium was expanded, which might also contribute to the observed patterning defects. These findings will improve our understanding of the maintenance of signal centers and help to elucidate the mechanisms underlying ventral telencephalic patterning.
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Affiliation(s)
- Ailing Du
- Key Laboratory of Developmental Genes and Human Diseases, MOE, Department of histology and embryology, School of Medicine, Southeast University, Nanjing 210009, China
| | - Xiaojing Wu
- Key Laboratory of Developmental Genes and Human Diseases, MOE, Department of histology and embryology, School of Medicine, Southeast University, Nanjing 210009, China
| | - Hanhan Chen
- Key Laboratory of Developmental Genes and Human Diseases, MOE, Department of histology and embryology, School of Medicine, Southeast University, Nanjing 210009, China
| | - Qing-Ran Bai
- Tongji Hospital, Brain and Spinal Cord Innovative Research Center, School of Life Sciences and Technology, Tongji University, Shanghai 200065, China
| | - Xiao Han
- Key Laboratory of Developmental Genes and Human Diseases, MOE, Department of histology and embryology, School of Medicine, Southeast University, Nanjing 210009, China
| | - Bin Liu
- Key Laboratory of Developmental Genes and Human Diseases, MOE, Department of histology and embryology, School of Medicine, Southeast University, Nanjing 210009, China
| | - Xiaohu Zhang
- Key Laboratory of Developmental Genes and Human Diseases, MOE, Department of histology and embryology, School of Medicine, Southeast University, Nanjing 210009, China
| | - Zhaoying Ding
- Key Laboratory of Developmental Genes and Human Diseases, MOE, Department of histology and embryology, School of Medicine, Southeast University, Nanjing 210009, China
| | - Qin Shen
- Tongji Hospital, Brain and Spinal Cord Innovative Research Center, School of Life Sciences and Technology, Tongji University, Shanghai 200065, China
| | - Chunjie Zhao
- Key Laboratory of Developmental Genes and Human Diseases, MOE, Department of histology and embryology, School of Medicine, Southeast University, Nanjing 210009, China
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Hacohen-Kleiman G, Moaraf S, Kapitansky O, Gozes I. Sex-and Region-Dependent Expression of the Autism-Linked ADNP Correlates with Social- and Speech-Related Genes in the Canary Brain. J Mol Neurosci 2020; 70:1671-1683. [PMID: 32926339 DOI: 10.1007/s12031-020-01700-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/05/2020] [Indexed: 02/07/2023]
Abstract
The activity-dependent neuroprotective protein (ADNP) syndrome is an autistic-like disorder, instigated by mutations in ADNP. This syndrome is characterized by developmental delays, impairments in speech, motor function, abnormal hearing, and intellectual disabilities. In the Adnp-haploinsufficient mouse model, many of these impediments are evident, appearing in a sex-dependent manner. In zebra finch songbird (ZF; Taeniopygia guttata), an animal model used for song/language studies, ADNP mRNA most robust expression is observed in the cerebrum of young males, potentially corroborating with male ZF exclusive singing behavior and developed cerebral song system. Herein, we report a similar sex-dependent ADNP expression profile, with the highest expression in the cerebrum (qRT-PCR) in the brain of another songbird, the domesticated canary (Serinus canaria domestica). Additional analyses for the mRNA transcripts of the ADNP regulator, vasoactive intestinal peptide (VIP), sister gene ADNP2, and speech-related Forkhead box protein P2 (FoxP2) revealed multiple sex and brain region-dependent positive correlations between the genes (including ADNP). Parallel transcript expression patterns for FoxP2 and VIP were observed alongside specific FoxP2 increase in males compared with females as well as VIP/ADNP2 correlations. In spatial view, a sexually independent extensive form of expression was found for ADNP in the canary cerebrum (RNA in situ hybridization). The songbird cerebral mesopallium area stood out as a potentially high-expressing ADNP tissue, further strengthening the association of ADNP with sense integration and auditory memory formation, previously implicated in mouse and human.
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Affiliation(s)
- Gal Hacohen-Kleiman
- The Elton Laboratory for Neuroendocrinology, Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Sagol School of Neuroscience and Adams Super Center for Brain Studies, Tel Aviv University, 69978, Tel Aviv, Israel
- Department of Natural and Life Sciences, The Open University of Israel, 43107, Ra'anana, Israel
| | - Stan Moaraf
- Department of Natural and Life Sciences, The Open University of Israel, 43107, Ra'anana, Israel
- School of Zoology, Tel Aviv University, 6997801, Tel Aviv, Israel
| | - Oxana Kapitansky
- The Elton Laboratory for Neuroendocrinology, Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Sagol School of Neuroscience and Adams Super Center for Brain Studies, Tel Aviv University, 69978, Tel Aviv, Israel
| | - Illana Gozes
- The Elton Laboratory for Neuroendocrinology, Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Sagol School of Neuroscience and Adams Super Center for Brain Studies, Tel Aviv University, 69978, Tel Aviv, Israel.
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12
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Co M, Anderson AG, Konopka G. FOXP transcription factors in vertebrate brain development, function, and disorders. WILEY INTERDISCIPLINARY REVIEWS. DEVELOPMENTAL BIOLOGY 2020; 9:e375. [PMID: 31999079 PMCID: PMC8286808 DOI: 10.1002/wdev.375] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 12/17/2019] [Accepted: 01/08/2020] [Indexed: 12/22/2022]
Abstract
FOXP transcription factors are an evolutionarily ancient protein subfamily coordinating the development of several organ systems in the vertebrate body. Association of their genes with neurodevelopmental disorders has sparked particular interest in their expression patterns and functions in the brain. Here, FOXP1, FOXP2, and FOXP4 are expressed in distinct cell type-specific spatiotemporal patterns in multiple regions, including the cortex, hippocampus, amygdala, basal ganglia, thalamus, and cerebellum. These varied sites and timepoints of expression have complicated efforts to link FOXP1 and FOXP2 mutations to their respective developmental disorders, the former affecting global neural functions and the latter specifically affecting speech and language. However, the use of animal models, particularly those with brain region- and cell type-specific manipulations, has greatly advanced our understanding of how FOXP expression patterns could underlie disorder-related phenotypes. While many questions remain regarding FOXP expression and function in the brain, studies to date have illuminated the roles of these transcription factors in vertebrate brain development and have greatly informed our understanding of human development and disorders. This article is categorized under: Nervous System Development > Vertebrates: General Principles Gene Expression and Transcriptional Hierarchies > Gene Networks and Genomics Nervous System Development > Vertebrates: Regional Development.
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Affiliation(s)
- Marissa Co
- Department of Molecular and Medical Genetics, Oregon Health & Science University, Portland, Oregon
| | - Ashley G Anderson
- Department of Neuroscience, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Genevieve Konopka
- Department of Neuroscience, University of Texas Southwestern Medical Center, Dallas, Texas
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13
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Vaid S, Huttner WB. Transcriptional Regulators and Human-Specific/Primate-Specific Genes in Neocortical Neurogenesis. Int J Mol Sci 2020; 21:ijms21134614. [PMID: 32610533 PMCID: PMC7369782 DOI: 10.3390/ijms21134614] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 06/09/2020] [Accepted: 06/26/2020] [Indexed: 12/15/2022] Open
Abstract
During development, starting from a pool of pluripotent stem cells, tissue-specific genetic programs help to shape and develop functional organs. To understand the development of an organ and its disorders, it is important to understand the spatio-temporal dynamics of the gene expression profiles that occur during its development. Modifications in existing genes, the de-novo appearance of new genes, or, occasionally, even the loss of genes, can greatly affect the gene expression profile of any given tissue and contribute to the evolution of organs or of parts of organs. The neocortex is evolutionarily the most recent part of the brain, it is unique to mammals, and is the seat of our higher cognitive abilities. Progenitors that give rise to this tissue undergo sequential waves of differentiation to produce the complete sets of neurons and glial cells that make up a functional neocortex. We will review herein our understanding of the transcriptional regulators that control the neural precursor cells (NPCs) during the generation of the most abundant class of neocortical neurons, the glutametergic neurons. In addition, we will discuss the roles of recently-identified human- and primate-specific genes in promoting neurogenesis, leading to neocortical expansion.
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14
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Seabra CM, Aneichyk T, Erdin S, Tai DJC, De Esch CEF, Razaz P, An Y, Manavalan P, Ragavendran A, Stortchevoi A, Abad C, Young JI, Maciel P, Talkowski ME, Gusella JF. Transcriptional consequences of MBD5 disruption in mouse brain and CRISPR-derived neurons. Mol Autism 2020; 11:45. [PMID: 32503625 PMCID: PMC7275313 DOI: 10.1186/s13229-020-00354-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 05/25/2020] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND MBD5, encoding the methyl-CpG-binding domain 5 protein, has been proposed as a necessary and sufficient driver of the 2q23.1 microdeletion syndrome. De novo missense and protein-truncating variants from exome sequencing studies have directly implicated MBD5 in the etiology of autism spectrum disorder (ASD) and related neurodevelopmental disorders (NDDs). However, little is known concerning the specific function(s) of MBD5. METHODS To gain insight into the complex interactions associated with alteration of MBD5 in individuals with ASD and related NDDs, we explored the transcriptional landscape of MBD5 haploinsufficiency across multiple mouse brain regions of a heterozygous hypomorphic Mbd5+/GT mouse model, and compared these results to CRISPR-mediated mutations of MBD5 in human iPSC-derived neuronal models. RESULTS Gene expression analyses across three brain regions from Mbd5+/GT mice showed subtle transcriptional changes, with cortex displaying the most widespread changes following Mbd5 reduction, indicating context-dependent effects. Comparison with MBD5 reduction in human neuronal cells reinforced the context-dependence of gene expression changes due to MBD5 deficiency. Gene co-expression network analyses revealed gene clusters that were associated with reduced MBD5 expression and enriched for terms related to ciliary function. LIMITATIONS These analyses included a limited number of mouse brain regions and neuronal models, and the effects of the gene knockdown are subtle. As such, these results will not reflect the full extent of MBD5 disruption across human brain regions during early neurodevelopment in ASD, or capture the diverse spectrum of cell-type-specific changes associated with MBD5 alterations. CONCLUSIONS Our study points to modest and context-dependent transcriptional consequences of Mbd5 disruption in the brain. It also suggests a possible link between MBD5 and perturbations in ciliary function, which is an established pathogenic mechanism in developmental disorders and syndromes.
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Affiliation(s)
- Catarina M Seabra
- Molecular Neurogenetics Unit, Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA, USA.,Program in Medical and Population Genetics, Broad Institute of MIT and Harvard Medical School, Boston, MA, USA.,GABBA Program - Institute of Biomedical Sciences Abel Salazar of the University of Porto, Porto, Portugal
| | - Tatsiana Aneichyk
- Molecular Neurogenetics Unit, Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA, USA.,Program in Medical and Population Genetics, Broad Institute of MIT and Harvard Medical School, Boston, MA, USA.,Independent Data Lab UG, Munich, Germany
| | - Serkan Erdin
- Molecular Neurogenetics Unit, Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA, USA.,Program in Medical and Population Genetics, Broad Institute of MIT and Harvard Medical School, Boston, MA, USA
| | - Derek J C Tai
- Molecular Neurogenetics Unit, Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA, USA.,Program in Medical and Population Genetics, Broad Institute of MIT and Harvard Medical School, Boston, MA, USA.,Department of Neurology, Harvard Medical School, Boston, MA, USA
| | - Celine E F De Esch
- Molecular Neurogenetics Unit, Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA, USA.,Program in Medical and Population Genetics, Broad Institute of MIT and Harvard Medical School, Boston, MA, USA.,Department of Neurology, Harvard Medical School, Boston, MA, USA
| | - Parisa Razaz
- Molecular Neurogenetics Unit, Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA, USA.,Program in Medical and Population Genetics, Broad Institute of MIT and Harvard Medical School, Boston, MA, USA.,Department of Neurology, Harvard Medical School, Boston, MA, USA
| | - Yu An
- Molecular Neurogenetics Unit, Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA, USA.,Human Phenome Institute, Fudan University, Shanghai, China
| | - Poornima Manavalan
- Molecular Neurogenetics Unit, Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Ashok Ragavendran
- Molecular Neurogenetics Unit, Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA, USA.,Program in Medical and Population Genetics, Broad Institute of MIT and Harvard Medical School, Boston, MA, USA.,Center for Computational Biology of Human Disease & Center for Computation and Visualization, Brown University, Providence, Rhode Island, USA
| | - Alexei Stortchevoi
- Molecular Neurogenetics Unit, Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Clemer Abad
- Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami, Miami, FL, USA
| | - Juan I Young
- Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami, Miami, FL, USA
| | - Patricia Maciel
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga, Guimarães, Portugal
| | - Michael E Talkowski
- Molecular Neurogenetics Unit, Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA, USA.,Program in Medical and Population Genetics, Broad Institute of MIT and Harvard Medical School, Boston, MA, USA.,Department of Neurology, Harvard Medical School, Boston, MA, USA
| | - James F Gusella
- Molecular Neurogenetics Unit, Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA, USA. .,Program in Medical and Population Genetics, Broad Institute of MIT and Harvard Medical School, Boston, MA, USA. .,Department of Genetics, Blavatnik Institute, Harvard Medical School, Boston, MA, USA. .,Harvard Stem Cell Institute, Harvard University, Cambridge, MA, USA.
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15
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Parcellation of the striatal complex into dorsal and ventral districts. Proc Natl Acad Sci U S A 2020; 117:7418-7429. [PMID: 32170006 DOI: 10.1073/pnas.1921007117] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
The striatal complex of basal ganglia comprises two functionally distinct districts. The dorsal district controls motor and cognitive functions. The ventral district regulates the limbic function of motivation, reward, and emotion. The dorsoventral parcellation of the striatum also is of clinical importance as differential striatal pathophysiologies occur in Huntington's disease, Parkinson's disease, and drug addiction disorders. Despite these striking neurobiologic contrasts, it is largely unknown how the dorsal and ventral divisions of the striatum are set up. Here, we demonstrate that interactions between the two key transcription factors Nolz-1 and Dlx1/2 control the migratory paths of striatal neurons to the dorsal or ventral striatum. Moreover, these same transcription factors control the cell identity of striatal projection neurons in both the dorsal and the ventral striata including the D1-direct and D2-indirect pathways. We show that Nolz-1, through the I12b enhancer, represses Dlx1/2, allowing normal migration of striatal neurons to dorsal and ventral locations. We demonstrate that deletion, up-regulation, and down-regulation of Nolz-1 and Dlx1/2 can produce a striatal phenotype characterized by a withered dorsal striatum and an enlarged ventral striatum and that we can rescue this phenotype by manipulating the interactions between Nolz-1 and Dlx1/2 transcription factors. Our study indicates that the two-tier system of striatal complex is built by coupling of cell-type identity and migration and suggests that the fundamental basis for divisions of the striatum known to be differentially vulnerable at maturity is already encoded by the time embryonic striatal neurons begin their migrations into developing striata.
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16
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Differential Song Deficits after Lentivirus-Mediated Knockdown of FoxP1, FoxP2, or FoxP4 in Area X of Juvenile Zebra Finches. J Neurosci 2019; 39:9782-9796. [PMID: 31641053 DOI: 10.1523/jneurosci.1250-19.2019] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 09/30/2019] [Accepted: 10/01/2019] [Indexed: 12/12/2022] Open
Abstract
Mutations in the transcription factors FOXP1 and FOXP2 are associated with speech impairments. FOXP1 is additionally linked to cognitive deficits, as is FOXP4. These FoxP proteins are highly conserved in vertebrates and expressed in comparable brain regions, including the striatum. In male zebra finches, experimental manipulation of FoxP2 in Area X, a striatal song nucleus essential for vocal production learning, affects song development, adult song production, dendritic spine density, and dopamine-regulated synaptic transmission of striatal neurons. We previously showed that, in the majority of Area X neurons FoxP1, FoxP2, and FoxP4 are coexpressed, can dimerize and multimerize with each other and differentially regulate the expression of target genes. These findings raise the possibility that FoxP1, FoxP2, and FoxP4 (FoxP1/2/4) affect neural function differently and in turn vocal learning. To address this directly, we downregulated FoxP1 or FoxP4 in Area X of juvenile zebra finches and compared the resulting song phenotypes with the previously described inaccurate and incomplete song learning after FoxP2 knockdown. We found that experimental downregulation of FoxP1 and FoxP4 led to impaired song learning with partly similar features as those reported for FoxP2 knockdowns. However, there were also specific differences between the groups, leading us to suggest that specific features of the song are differentially impacted by developmental manipulations of FoxP1/2/4 expression in Area X.SIGNIFICANCE STATEMENT We compared the effects of experimentally reduced expression of the transcription factors FoxP1, FoxP2, and FoxP4 in a striatal song nucleus, Area X, on vocal production learning in juvenile male zebra finches. We show, for the first time, that these temporally and spatially precise manipulations of the three FoxPs affect spectral and temporal song features differentially. This is important because it raises the possibility that the different FoxPs control different aspects of vocal learning through combinatorial gene expression or by acting in different microcircuits within Area X. These results are consistent with the deleterious effects of human FOXP1 and FOXP2 mutations on speech and language and add FOXP4 as a possible candidate gene for vocal disorders.
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17
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Schreiweis C, Irinopoulou T, Vieth B, Laddada L, Oury F, Burguière E, Enard W, Groszer M. Mice carrying a humanized Foxp2 knock-in allele show region-specific shifts of striatal Foxp2 expression levels. Cortex 2019; 118:212-222. [DOI: 10.1016/j.cortex.2019.01.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 11/07/2018] [Accepted: 01/08/2019] [Indexed: 12/31/2022]
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18
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Lang X, Zhang W, Song X, Zhang G, Du X, Zhou Y, Li Z, Zhang XY. FOXP2 contributes to the cognitive impairment in chronic patients with schizophrenia. Aging (Albany NY) 2019; 11:6440-6448. [PMID: 31425145 PMCID: PMC6738427 DOI: 10.18632/aging.102198] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 08/10/2019] [Indexed: 04/24/2023]
Abstract
The forkhead-box P2 (FOXP2), involving in language and memory function, has been identified as susceptibility to schizophrenia. However, no study examined the role of FOXP2 on cognitive impairment in schizophrenia. Total 1106 inpatients with schizophrenia and 404 controls were recruited and genotyped. Among them, 867 patients and 402 controls were assessed through the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS). SHEsis software was used to investigate the association of FOXP2 rs10447760 with schizophrenia, followed by logistic regression. The model of covariance (ANCOVA) and multivariate analysis were conducted to investigate the effect of FOXP2 rs10447760 on cognitive impairment in schizophrenia. No differences in the genotypic and allelic frequencies of the FOXP2 rs10447760 were found between patients and controls (both p> 0.05). Except for the visuospatial/constructional score (p > 0.05), other five RBANS scores were lower in patients compared to controls (all p < 0.0001). Interestingly, we found immediate memory score was lower in patients carrying genotype CT compared to genotype CC (F=5.19, p=0.02), adjusting for confounding data. Our study suggested that FOXP2 rs10447760 has no effect on the susceptibility to schizophrenia, while it may be associated with its cognitive impairment, especially immediate memory in chronic schizophrenia.
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Affiliation(s)
- Xiaoe Lang
- Department of Psychiatry, The First Clinical Medical College, Shanxi Medical University, Taiyuan, China
| | | | - Xinxin Song
- Qingdao Mental Health Center, Qingdao, China
| | - Guangya Zhang
- Suzhou Psychiatric Hospital, The Affiliated Guangji Hospital of Soochow University, Suzhou, China
| | - Xiangdong Du
- Suzhou Psychiatric Hospital, The Affiliated Guangji Hospital of Soochow University, Suzhou, China
| | - Yongjie Zhou
- Research Center for Psychological and Health Sciences, China University of Geosciences, Wuhan, China
- Affiliated Wuhan Mental Health Center, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
| | - Zezhi Li
- Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiang Yang Zhang
- Department of Psychiatry and Behavioral Sciences, The University of Texas Health Science Center at Houston, Houston, TX 77054, USA
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19
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Argyropoulos GPD, Watkins KE, Belton-Pagnamenta E, Liégeois F, Saleem KS, Mishkin M, Vargha-Khadem F. Neocerebellar Crus I Abnormalities Associated with a Speech and Language Disorder Due to a Mutation in FOXP2. CEREBELLUM (LONDON, ENGLAND) 2019; 18:309-319. [PMID: 30460543 PMCID: PMC6517346 DOI: 10.1007/s12311-018-0989-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Bilateral volume reduction in the caudate nucleus has been established as a prominent brain abnormality associated with a FOXP2 mutation in affected members of the 'KE family', who present with developmental orofacial and verbal dyspraxia in conjunction with pervasive language deficits. Despite the gene's early and prominent expression in the cerebellum and the evidence for reciprocal cerebellum-basal ganglia connectivity, very little is known about cerebellar abnormalities in affected KE members. Using cerebellum-specific voxel-based morphometry (VBM) and volumetry, we provide converging evidence from subsets of affected KE members scanned at three time points for grey matter (GM) volume reduction bilaterally in neocerebellar lobule VIIa Crus I compared with unaffected members and unrelated controls. We also show that right Crus I volume correlates with left and total caudate nucleus volumes in affected KE members, and that right and total Crus I volumes predict the performance of affected members in non-word repetition and non-verbal orofacial praxis. Crus I also shows bilateral hypo-activation in functional MRI in the affected KE members relative to controls during non-word repetition. The association of Crus I with key aspects of the behavioural phenotype of this FOXP2 point mutation is consistent with recent evidence of cerebellar involvement in complex motor sequencing. For the first time, specific cerebello-basal ganglia loops are implicated in the execution of complex oromotor sequences needed for human speech.
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Affiliation(s)
- G P D Argyropoulos
- Cognitive Neuroscience and Neuropsychiatry Section, UCL Great Ormond Street Institute of Child Health, University College London, 30 Guilford Street, London, WC1N 1EH, UK
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK
| | - K E Watkins
- Department of Experimental Psychology, University of Oxford, Oxford, UK
| | - E Belton-Pagnamenta
- Cognitive Neuroscience and Neuropsychiatry Section, UCL Great Ormond Street Institute of Child Health, University College London, 30 Guilford Street, London, WC1N 1EH, UK
- School of Psychology and Clinical Language Sciences, University of Reading, Reading, UK
| | - F Liégeois
- Cognitive Neuroscience and Neuropsychiatry Section, UCL Great Ormond Street Institute of Child Health, University College London, 30 Guilford Street, London, WC1N 1EH, UK
| | - K S Saleem
- Laboratory of Neuropsychology, National Institute of Mental Health, Bethesda, MD, USA
| | - M Mishkin
- Laboratory of Neuropsychology, National Institute of Mental Health, Bethesda, MD, USA
| | - F Vargha-Khadem
- Cognitive Neuroscience and Neuropsychiatry Section, UCL Great Ormond Street Institute of Child Health, University College London, 30 Guilford Street, London, WC1N 1EH, UK.
- Great Ormond Street Hospital for Children National Health Foundation Trust, London, UK.
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20
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Kast RJ, Lanjewar AL, Smith CD, Levitt P. FOXP2 exhibits projection neuron class specific expression, but is not required for multiple aspects of cortical histogenesis. eLife 2019; 8:e42012. [PMID: 31099752 PMCID: PMC6561705 DOI: 10.7554/elife.42012] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 05/14/2019] [Indexed: 12/15/2022] Open
Abstract
The expression patterns of the transcription factor FOXP2 in the developing mammalian forebrain have been described, and some studies have tested the role of this protein in the development and function of specific forebrain circuits by diverse methods and in multiple species. Clinically, mutations in FOXP2 are associated with severe developmental speech disturbances, and molecular studies indicate that impairment of Foxp2 may lead to dysregulation of genes involved in forebrain histogenesis. Here, anatomical and molecular phenotypes of the cortical neuron populations that express FOXP2 were characterized in mice. Additionally, Foxp2 was removed from the developing mouse cortex at different prenatal ages using two Cre-recombinase driver lines. Detailed molecular and circuit analyses were undertaken to identify potential disruptions of development. Surprisingly, the results demonstrate that Foxp2 function is not required for many functions that it has been proposed to regulate, and therefore plays a more limited role in cortical development than previously thought.
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Affiliation(s)
- Ryan J Kast
- Department of Pediatrics and Program in Developmental Neuroscience and NeurogeneticsThe Saban Research Institute, Children’s Hospital Los Angeles, Keck School of Medicine, University of Southern CaliforniaLos AngelesUnited States
| | - Alexandra L Lanjewar
- Department of Pediatrics and Program in Developmental Neuroscience and NeurogeneticsThe Saban Research Institute, Children’s Hospital Los Angeles, Keck School of Medicine, University of Southern CaliforniaLos AngelesUnited States
| | - Colton D Smith
- Department of Pediatrics and Program in Developmental Neuroscience and NeurogeneticsThe Saban Research Institute, Children’s Hospital Los Angeles, Keck School of Medicine, University of Southern CaliforniaLos AngelesUnited States
| | - Pat Levitt
- Department of Pediatrics and Program in Developmental Neuroscience and NeurogeneticsThe Saban Research Institute, Children’s Hospital Los Angeles, Keck School of Medicine, University of Southern CaliforniaLos AngelesUnited States
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21
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Medvedeva VP, Rieger MA, Vieth B, Mombereau C, Ziegenhain C, Ghosh T, Cressant A, Enard W, Granon S, Dougherty JD, Groszer M. Altered social behavior in mice carrying a cortical Foxp2 deletion. Hum Mol Genet 2019; 28:701-717. [PMID: 30357341 PMCID: PMC6381386 DOI: 10.1093/hmg/ddy372] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Revised: 09/30/2018] [Accepted: 10/16/2018] [Indexed: 11/14/2022] Open
Abstract
Genetic disruptions of the forkhead box transcription factor FOXP2 in humans cause an autosomal-dominant speech and language disorder. While FOXP2 expression pattern are highly conserved, its role in specific brain areas for mammalian social behaviors remains largely unknown. Here we studied mice carrying a homozygous cortical Foxp2 deletion. The postnatal development and gross morphological architecture of mutant mice was indistinguishable from wildtype (WT) littermates. Unbiased behavioral profiling of adult mice revealed abnormalities in approach behavior towards conspecifics as well as in the reciprocal responses of WT interaction partners. Furthermore mutant mice showed alterations in acoustical parameters of ultrasonic vocalizations, which also differed in function of the social context. Cell type-specific gene expression profiling of cortical pyramidal neurons revealed aberrant regulation of genes involved in social behavior. In particular Foxp2 mutants showed the downregulation of Mint2 (Apba2), a gene involved in approach behavior in mice and autism spectrum disorder in humans. Taken together these data demonstrate that cortical Foxp2 is required for normal social behaviors in mice.
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Affiliation(s)
- Vera P Medvedeva
- Inserm, Institut du Fer à Moulin, Sorbonne Université, Paris, France
| | - Michael A Rieger
- Department of Genetics, Washington University School of Medicine, St. Louis, Missouri, USA; Department of Psychiatry, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Beate Vieth
- Anthropology & Human Genomics, Department of Biology II, Ludwig-Maximilians-University, Planegg-Martinsried, Germany
| | - Cédric Mombereau
- Inserm, Institut du Fer à Moulin, Sorbonne Université, Paris, France
| | - Christoph Ziegenhain
- Anthropology & Human Genomics, Department of Biology II, Ludwig-Maximilians-University, Planegg-Martinsried, Germany
| | - Tanay Ghosh
- Inserm, Institut du Fer à Moulin, Sorbonne Université, Paris, France
| | - Arnaud Cressant
- Institut des Neurosciences Paris-Saclay, Centre National de la Recherche Scientifique UMR, Orsay, France
| | - Wolfgang Enard
- Anthropology & Human Genomics, Department of Biology II, Ludwig-Maximilians-University, Planegg-Martinsried, Germany
| | - Sylvie Granon
- Institut des Neurosciences Paris-Saclay, Centre National de la Recherche Scientifique UMR, Orsay, France
| | - Joseph D Dougherty
- Department of Genetics, Washington University School of Medicine, St. Louis, Missouri, USA; Department of Psychiatry, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Matthias Groszer
- Inserm, Institut du Fer à Moulin, Sorbonne Université, Paris, France
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22
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Cheung LYM, George AS, McGee SR, Daly AZ, Brinkmeier ML, Ellsworth BS, Camper SA. Single-Cell RNA Sequencing Reveals Novel Markers of Male Pituitary Stem Cells and Hormone-Producing Cell Types. Endocrinology 2018; 159:3910-3924. [PMID: 30335147 PMCID: PMC6240904 DOI: 10.1210/en.2018-00750] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Accepted: 10/09/2018] [Indexed: 12/22/2022]
Abstract
Transcription factors and signaling pathways that regulate stem cells and specialized hormone-producing cells in the pituitary gland have been the subject of intense study and have yielded a mechanistic understanding of pituitary organogenesis and disease. However, the regulation of stem cell proliferation and differentiation, the heterogeneity among specialized hormone-producing cells, and the role of nonendocrine cells in the gland remain important, unanswered questions. Recent advances in single-cell RNA sequencing (scRNAseq) technologies provide new avenues to address these questions. We performed scRNAseq on ∼13,663 cells pooled from six whole pituitary glands of 7-week-old C57BL/6 male mice. We identified pituitary endocrine and stem cells in silico, as well as other support cell types such as endothelia, connective tissue, and red and white blood cells. Differential gene expression analyses identify known and novel markers of pituitary endocrine and stem cell populations. We demonstrate the value of scRNAseq by in vivo validation of a novel gonadotrope-enriched marker, Foxp2. We present novel scRNAseq data of in vivo pituitary tissue, including data from agnostic clustering algorithms that suggest the presence of a somatotrope subpopulation enriched in sterol/cholesterol synthesis genes. Additionally, we show that incomplete transcriptome annotation can cause false negatives on some scRNAseq platforms that only generate 3' transcript end sequences, and we use in vivo data to recover reads of the pituitary transcription factor Prop1. Ultimately, scRNAseq technologies represent a significant opportunity to address long-standing questions regarding the development and function of the different populations of the pituitary gland throughout life.
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Affiliation(s)
- Leonard Y M Cheung
- Department of Human Genetics, University of Michigan, Ann Arbor, Michigan
| | - Akima S George
- Department of Human Genetics, University of Michigan, Ann Arbor, Michigan
| | - Stacey R McGee
- Department of Physiology, Southern Illinois University, Carbondale, Illinois
| | - Alexandre Z Daly
- Department of Human Genetics, University of Michigan, Ann Arbor, Michigan
| | | | - Buffy S Ellsworth
- Department of Physiology, Southern Illinois University, Carbondale, Illinois
| | - Sally A Camper
- Department of Human Genetics, University of Michigan, Ann Arbor, Michigan
- Correspondence: Sally A. Camper, PhD, Department of Human Genetics, University of Michigan, 5805 Medical Science Building II, 1241 East Catherine Street, Ann Arbor, Michigan 48109. E-mail:
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Schatton A, Agoro J, Mardink J, Leboulle G, Scharff C. Identification of the neurotransmitter profile of AmFoxP expressing neurons in the honeybee brain using double-label in situ hybridization. BMC Neurosci 2018; 19:69. [PMID: 30400853 PMCID: PMC6219247 DOI: 10.1186/s12868-018-0469-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 10/29/2018] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND FoxP transcription factors play crucial roles for the development and function of vertebrate brains. In humans the neurally expressed FOXPs, FOXP1, FOXP2, and FOXP4 are implicated in cognition, including language. Neural FoxP expression is specific to particular brain regions but FoxP1, FoxP2 and FoxP4 are not limited to a particular neuron or neurotransmitter type. Motor- or sensory activity can regulate FoxP2 expression, e.g. in the striatal nucleus Area X of songbirds and in the auditory thalamus of mice. The DNA-binding domain of FoxP proteins is highly conserved within metazoa, raising the possibility that cellular functions were preserved across deep evolutionary time. We have previously shown in bee brains that FoxP is expressed in eleven specific neuron populations, seven tightly packed clusters and four loosely arranged groups. RESULTS The present study examined the co-expression of honeybee FoxP (AmFoxP) with markers for glutamatergic, GABAergic, cholinergic and monoaminergic transmission. We found that AmFoxP could co-occur with any one of those markers. Interestingly, AmFoxP clusters and AmFoxP groups differed with respect to homogeneity of marker co-expression; within a cluster, all neurons co-expressed the same neurotransmitter marker, within a group co-expression varied. We also assessed qualitatively whether age or housing conditions providing different sensory and motor experiences affected the AmFoxP neuron populations, but found no differences. CONCLUSIONS Based on the neurotransmitter homogeneity we conclude that AmFoxP neurons within the clusters might have a common projection and function whereas the AmFoxP groups are more diverse and could be further sub-divided. The obtained information about the neurotransmitters co-expressed in the AmFoxP neuron populations facilitated the search of similar neurons described in the literature. These comparisons revealed e.g. a possible function of AmFoxP neurons in the central complex. Our findings provide opportunities to focus future functional studies on invertebrate FoxP expressing neurons. In a broader context, our data will contribute to the ongoing efforts to discern in which cases relationships between molecular and phenotypic signatures are linked evolutionary.
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Affiliation(s)
- Adriana Schatton
- Department of Animal Behavior, Freie Universität Berlin, Takustraße 6, 14195 Berlin, Germany
| | - Julia Agoro
- Department of Animal Behavior, Freie Universität Berlin, Takustraße 6, 14195 Berlin, Germany
- Department of Neurobiology, Freie Universität Berlin, Königin-Luise-Straße 28-30, 14195 Berlin, Germany
| | - Janis Mardink
- Department of Animal Behavior, Freie Universität Berlin, Takustraße 6, 14195 Berlin, Germany
| | - Gérard Leboulle
- Department of Neurobiology, Freie Universität Berlin, Königin-Luise-Straße 28-30, 14195 Berlin, Germany
| | - Constance Scharff
- Department of Animal Behavior, Freie Universität Berlin, Takustraße 6, 14195 Berlin, Germany
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No association between FOXP2 rs10447760 and schizophrenia in a replication study of the Chinese Han population. Psychiatr Genet 2018; 28:19-23. [PMID: 29346177 DOI: 10.1097/ypg.0000000000000193] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Schizophrenia (SCZ) is a severe and heritable psychiatric disorder, and previous studies have shown that regulation of the forkhead-box P2 gene (FOXP2) may play a role in schizophrenia. Moreover, just a few studies have identified a single nucleotide polymorphism (SNP) rs10447760 within the gene that was a risk variant for SCZ in the Chinese Han population. METHODS To examine whether the variant in the FOXP2 gene contributes toward SCZ susceptibility, we carried out an association analysis of the SNP rs10447760 of the FOXP2 gene in a case-control study (1405 cases, 1137 controls) from China. RESULTS We identified no association of rs10447760 in the FOXP2 gene with SCZ (all P>0.05). In addition, a meta-analysis indicated that the SNP rs10447760 was not associated with susceptibility to SCZ in Han Chinese populations (pooled odds ratio=1.44, 95% confidence interval: 0.63-3.31, P=0.39). CONCLUSION Thus, our results did not support the association between FOXP2 rs10447760 and schizophrenia in a Chinese Han population, and large-scale genetic replication studies with different racial and geographic origins are required in the future.
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Onnis L, Truzzi A, Ma X. Language development and disorders: Possible genes and environment interactions. RESEARCH IN DEVELOPMENTAL DISABILITIES 2018; 82:132-146. [PMID: 30077386 DOI: 10.1016/j.ridd.2018.06.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 06/22/2018] [Accepted: 06/23/2018] [Indexed: 06/08/2023]
Abstract
Language development requires both basic cognitive mechanisms for learning language and a rich social context from which learning takes off. Disruptions in learning mechanisms, processing abilities, and/or social interactions increase the risks associated with social exclusion or developmental delays. Given the complexity of language processes, a multilevel approach is proposed where both cognitive mechanisms, genetic and environmental factors need to be probed together with their possible interactions. Here we review and discuss such interplay between environment and genetic predispositions in understanding language disorders, with a particular focus on a possible endophenotype, the ability for statistical sequential learning.
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Affiliation(s)
- Luca Onnis
- Nanyang Technological University, Singapore.
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26
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Foxp2 loss of function increases striatal direct pathway inhibition via increased GABA release. Brain Struct Funct 2018; 223:4211-4226. [PMID: 30187194 PMCID: PMC6267273 DOI: 10.1007/s00429-018-1746-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 08/31/2018] [Indexed: 12/19/2022]
Abstract
Heterozygous mutations of the Forkhead-box protein 2 (FOXP2) gene in humans cause childhood apraxia of speech. Loss of Foxp2 in mice is known to affect striatal development and impair motor skills. However, it is unknown if striatal excitatory/inhibitory balance is affected during development and if the imbalance persists into adulthood. We investigated the effect of reduced Foxp2 expression, via a loss-of-function mutation, on striatal medium spiny neurons (MSNs). Our data show that heterozygous loss of Foxp2 decreases excitatory (AMPA receptor-mediated) and increases inhibitory (GABA receptor-mediated) currents in D1 dopamine receptor positive MSNs of juvenile and adult mice. Furthermore, reduced Foxp2 expression increases GAD67 expression, leading to both increased presynaptic content and release of GABA. Finally, pharmacological blockade of inhibitory activity in vivo partially rescues motor skill learning deficits in heterozygous Foxp2 mice. Our results suggest a novel role for Foxp2 in the regulation of striatal direct pathway activity through managing inhibitory drive.
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27
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Fong WL, Kuo HY, Wu HL, Chen SY, Liu FC. Differential and Overlapping Pattern of Foxp1 and Foxp2 Expression in the Striatum of Adult Mouse Brain. Neuroscience 2018; 388:214-223. [PMID: 30031127 DOI: 10.1016/j.neuroscience.2018.07.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 07/04/2018] [Accepted: 07/10/2018] [Indexed: 01/06/2023]
Abstract
Genetic mutations of FOXP1 and FOXP2 are associated with neurodevelopmental diseases. It is important to characterize the cell types that express Foxp1 and Foxp2 in the brain. Foxp1 and Foxp2 are expressed at high levels in the striatum of mouse brains. There are two populations of striatal projection neurons (SPNs), dopamine D1 receptor (D1R)-expressing striatonigral neurons and D2 receptor (D2R)-expressing striatopallidal neurons. In addition to SPNs, there are different types of striatal interneurons. Here, we quantitatively analyze the expression pattern of Foxp1 and Foxp2 with respect to specific cell types of projection neurons and interneurons in the striatum of adult mouse brains. Double immunostaining and in situ hybridization showed that Foxp1 and Foxp2 were specifically expressed in SPNs, but not in interneurons. For Foxp1, 50-57% of Foxp1-positive neurons co-expressed D1R mRNA, and 45-52% of Foxp1-positive neurons co-expressed D2R mRNA in the striatum at rostrocaudal levels. For Foxp2, 65-77% of Foxp2-positive neurons co-expressed D1R mRNA, and 21-26% of Foxp2-positive neurons co-expressed D2R mRNA in the striatum at rostrocaudal levels. Neither Foxp1 nor Foxp2 was found to co-localize with parvalbumin, somatostatin, nNOS, calretinin and ChAT in interneurons of the striatum. Moreover, none of parvalbumin-, somatostatin-, nNOS-, and calretinin-positive interneurons co-expressed Foxp1 or Foxp2 in the cerebral cortex. As Foxp1 and Foxp2 can form heterodimers for transcriptional regulation, the differential and overlapping expression pattern of Foxp1 and Foxp2 in SPNs implicates coordinate and distinct roles of Foxp1 and Foxp2 in developmental construction and physiologic functions of striatal circuits in the brain.
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Affiliation(s)
- Weng Lam Fong
- Institute of Neuroscience, National Yang-Ming University, Taipei 11221, Taiwan
| | - Hsiao-Ying Kuo
- Institute of Neuroscience, National Yang-Ming University, Taipei 11221, Taiwan
| | - Hsiao-Lin Wu
- Institute of Neuroscience, National Yang-Ming University, Taipei 11221, Taiwan
| | - Shih-Yun Chen
- Institute of Neuroscience, National Yang-Ming University, Taipei 11221, Taiwan
| | - Fu-Chin Liu
- Institute of Neuroscience, National Yang-Ming University, Taipei 11221, Taiwan; Brain Research Center, National Yang-Ming University, Taipei 11221, Taiwan.
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28
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Golas MM. Human cellular models of medium spiny neuron development and Huntington disease. Life Sci 2018; 209:179-196. [PMID: 30031060 DOI: 10.1016/j.lfs.2018.07.030] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Revised: 06/22/2018] [Accepted: 07/17/2018] [Indexed: 12/24/2022]
Abstract
The loss of gamma-aminobutyric acid (GABA)-ergic medium spiny neurons (MSNs) in the striatum is the hallmark of Huntington disease (HD), an incurable neurodegenerative disorder characterized by progressive motor, psychiatric, and cognitive symptoms. Transplantation of MSNs or their precursors represents a promising treatment strategy for HD. In initial clinical trials in which HD patients received fetal neurografts directly into the striatum without a pretransplant cell-differentiation step, some patients exhibited temporary benefits. Meanwhile, major challenges related to graft overgrowth, insufficient survival of grafted cells, and limited availability of donated fetal tissue remain. Thus, the development of approaches that allow modeling of MSN differentiation and HD development in cell culture platforms may improve our understanding of HD and translate, ultimately, into HD treatment options. Here, recent advances in the in vitro differentiation of MSNs derived from fetal neural stem cells/progenitor cells (NSCs/NPCs), embryonic stem cells (ESCs), induced pluripotent stem cells (iPSCs), and induced NSCs (iNSCs) as well as advances in direct transdifferentiation are reviewed. Progress in non-allele specific and allele specific gene editing of HTT is presented as well. Cell characterization approaches involving phenotyping as well as in vitro and in vivo functional assays are also discussed.
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Affiliation(s)
- Monika M Golas
- Department of Biomedicine, Aarhus University, Wilhelm Meyers Alle 3, Building 1233, DK-8000 Aarhus C, Denmark; Department of Human Genetics, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany.
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29
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Hachigian LJ, Carmona V, Fenster RJ, Kulicke R, Heilbut A, Sittler A, Pereira de Almeida L, Mesirov JP, Gao F, Kolaczyk ED, Heiman M. Control of Huntington's Disease-Associated Phenotypes by the Striatum-Enriched Transcription Factor Foxp2. Cell Rep 2018; 21:2688-2695. [PMID: 29212017 DOI: 10.1016/j.celrep.2017.11.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 09/19/2017] [Accepted: 11/02/2017] [Indexed: 10/18/2022] Open
Abstract
Alteration of corticostriatal glutamatergic function is an early pathophysiological change associated with Huntington's disease (HD). The factors that regulate the maintenance of corticostriatal glutamatergic synapses post-developmentally are not well understood. Recently, the striatum-enriched transcription factor Foxp2 was implicated in the development of these synapses. Here, we show that, in mice, overexpression of Foxp2 in the adult striatum of two models of HD leads to rescue of HD-associated behaviors, while knockdown of Foxp2 in wild-type mice leads to development of HD-associated behaviors. We note that Foxp2 encodes the longest polyglutamine repeat protein in the human reference genome, and we show that it can be sequestered into aggregates with polyglutamine-expanded mutant Huntingtin protein (mHTT). Foxp2 overexpression in HD model mice leads to altered expression of several genes associated with synaptic function, genes that present additional targets for normalization of corticostriatal dysfunction in HD.
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Affiliation(s)
- Lea J Hachigian
- Department of Brain and Cognitive Sciences, MIT, Cambridge, MA 02139, USA; Picower Institute for Learning and Memory, Cambridge, MA 02139, USA; Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Vitor Carmona
- Center for Neuroscience and Cell Biology (CNC) and Faculty of Pharmacy, The University of Coimbra Rua Larga, 3004-504 Coimbra, Portugal
| | - Robert J Fenster
- Picower Institute for Learning and Memory, Cambridge, MA 02139, USA
| | - Ruth Kulicke
- Picower Institute for Learning and Memory, Cambridge, MA 02139, USA; Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Adrian Heilbut
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Program in Bioinformatics, Boston University, Boston, MA 02215, USA
| | - Annie Sittler
- ICM (Brain and Spine Institute) Pitié-Salpêtrière Hospital, CNRS UMR 7225, 75013 Paris, France
| | - Luís Pereira de Almeida
- Center for Neuroscience and Cell Biology (CNC) and Faculty of Pharmacy, The University of Coimbra Rua Larga, 3004-504 Coimbra, Portugal
| | - Jill P Mesirov
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Fan Gao
- Picower Institute for Learning and Memory, Cambridge, MA 02139, USA
| | - Eric D Kolaczyk
- Program in Bioinformatics, Boston University, Boston, MA 02215, USA; Department of Mathematics and Statistics, Boston University, Boston, MA 02215, USA
| | - Myriam Heiman
- Department of Brain and Cognitive Sciences, MIT, Cambridge, MA 02139, USA; Picower Institute for Learning and Memory, Cambridge, MA 02139, USA; Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA.
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30
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Rodenas-Cuadrado PM, Mengede J, Baas L, Devanna P, Schmid TA, Yartsev M, Firzlaff U, Vernes SC. Mapping the distribution of language related genes FoxP1, FoxP2, and CntnaP2 in the brains of vocal learning bat species. J Comp Neurol 2018; 526:1235-1266. [PMID: 29297931 PMCID: PMC5900884 DOI: 10.1002/cne.24385] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 11/07/2017] [Accepted: 11/27/2017] [Indexed: 11/17/2022]
Abstract
Genes including FOXP2, FOXP1, and CNTNAP2, have been implicated in human speech and language phenotypes, pointing to a role in the development of normal language‐related circuitry in the brain. Although speech and language are unique to humans a comparative approach is possible by addressing language‐relevant traits in animal systems. One such trait, vocal learning, represents an essential component of human spoken language, and is shared by cetaceans, pinnipeds, elephants, some birds and bats. Given their vocal learning abilities, gregarious nature, and reliance on vocalizations for social communication and navigation, bats represent an intriguing mammalian system in which to explore language‐relevant genes. We used immunohistochemistry to detail the distribution of FoxP2, FoxP1, and Cntnap2 proteins, accompanied by detailed cytoarchitectural histology in the brains of two vocal learning bat species; Phyllostomus discolor and Rousettus aegyptiacus. We show widespread expression of these genes, similar to what has been previously observed in other species, including humans. A striking difference was observed in the adult P. discolor bat, which showed low levels of FoxP2 expression in the cortex that contrasted with patterns found in rodents and nonhuman primates. We created an online, open‐access database within which all data can be browsed, searched, and high resolution images viewed to single cell resolution. The data presented herein reveal regions of interest in the bat brain and provide new opportunities to address the role of these language‐related genes in complex vocal‐motor and vocal learning behaviors in a mammalian model system.
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Affiliation(s)
- Pedro M Rodenas-Cuadrado
- Neurogenetics of Vocal Communication Group, Max Planck Institute for Psycholinguistics, Nijmegen, 6500 AH, The Netherlands
| | - Janine Mengede
- Neurogenetics of Vocal Communication Group, Max Planck Institute for Psycholinguistics, Nijmegen, 6500 AH, The Netherlands
| | - Laura Baas
- Neurogenetics of Vocal Communication Group, Max Planck Institute for Psycholinguistics, Nijmegen, 6500 AH, The Netherlands
| | - Paolo Devanna
- Neurogenetics of Vocal Communication Group, Max Planck Institute for Psycholinguistics, Nijmegen, 6500 AH, The Netherlands
| | - Tobias A Schmid
- Helen Wills Neuroscience Institute, UC Berkeley, Berkeley, California, 94720
| | - Michael Yartsev
- Helen Wills Neuroscience Institute, UC Berkeley, Berkeley, California, 94720.,Department of Bioengineering, UC Berkeley, 306 University of California, Berkeley, California, 94720
| | - Uwe Firzlaff
- Department Tierwissenschaften, Lehrstuhl für Zoologie, TU München, München, 85354, Germany
| | - Sonja C Vernes
- Neurogenetics of Vocal Communication Group, Max Planck Institute for Psycholinguistics, Nijmegen, 6500 AH, The Netherlands.,Donders Centre for Cognitive Neuroimaging, Nijmegen, 6525 EN, The Netherlands
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31
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Chi L, Fan B, Feng D, Chen Z, Liu Z, Hui Y, Xu X, Ma L, Fang Y, Zhang Q, Jin G, Liu L, Guan F, Zhang X. The Dorsoventral Patterning of Human Forebrain Follows an Activation/Transformation Model. Cereb Cortex 2018; 27:2941-2954. [PMID: 27226442 DOI: 10.1093/cercor/bhw152] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
The anteroposterior patterning of the central nervous system follows an activation/transformation model, which proposes that a prospective telencephalic fate will be activated by default during the neural induction stage, while this anterior fate could be transformed posteriorly according to caudalization morphogens. Although both extrinsic signals and intrinsic transcription factors have been implicated in dorsoventral (DV) specification of vertebrate telencephalon, the DV patterning model remains elusive. This is especially true in human considering its evolutionary trait and uniqueness of gene regulatory networks during neural induction. Here, we point to a model that human forebrain DV patterning also follows an activation/transformation paradigm. Human neuroectoderm (NE) will activate a forebrain dorsal fate automatically and this default anterior dorsal fate does not depend on Wnts activation or Pax6 expression. Forced expression of Pax6 in human NE hinders its ventralization even under sonic hedgehog (Shh) treatment, suggesting that the ventral fate is repressed by dorsal genes. Genetic manipulation of Nkx2.1, a key gene for forebrain ventral progenitors, shows that Nkx2.1 is neither necessary nor sufficient for Shh-driven ventralization. We thus propose that Shh represses dorsal genes of human NE and subsequently transforms the primitively activated dorsal fate ventrally in a repression release manner.
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Affiliation(s)
- Liankai Chi
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences and.,School of Life Sciences, Zhengzhou University, Zhengzhou, Henan Province 450001, China.,Shanghai Tenth People's Hospital, and Neuroregeneration Key Laboratory of Shanghai Universities, Tongji University School of Medicine, Shanghai 200092, China
| | - Beibei Fan
- Shanghai Tenth People's Hospital, and Neuroregeneration Key Laboratory of Shanghai Universities, Tongji University School of Medicine, Shanghai 200092, China
| | - Dandan Feng
- Shanghai Tenth People's Hospital, and Neuroregeneration Key Laboratory of Shanghai Universities, Tongji University School of Medicine, Shanghai 200092, China
| | - Zhenyu Chen
- Shanghai Tenth People's Hospital, and Neuroregeneration Key Laboratory of Shanghai Universities, Tongji University School of Medicine, Shanghai 200092, China
| | - Zhongliang Liu
- Shanghai Tenth People's Hospital, and Neuroregeneration Key Laboratory of Shanghai Universities, Tongji University School of Medicine, Shanghai 200092, China
| | - Yi Hui
- Department of Anatomy and Neurobiology, The Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Jiangsu 226001, China
| | - Xiangjie Xu
- Shanghai Tenth People's Hospital, and Neuroregeneration Key Laboratory of Shanghai Universities, Tongji University School of Medicine, Shanghai 200092, China
| | - Lin Ma
- Shanghai Tenth People's Hospital, and Neuroregeneration Key Laboratory of Shanghai Universities, Tongji University School of Medicine, Shanghai 200092, China
| | - Yujiang Fang
- Shanghai Tenth People's Hospital, and Neuroregeneration Key Laboratory of Shanghai Universities, Tongji University School of Medicine, Shanghai 200092, China
| | - Quanbin Zhang
- Shanghai Tenth People's Hospital, and Neuroregeneration Key Laboratory of Shanghai Universities, Tongji University School of Medicine, Shanghai 200092, China
| | - Guohua Jin
- Department of Anatomy and Neurobiology, The Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Jiangsu 226001, China
| | - Ling Liu
- Shanghai Tenth People's Hospital, and Neuroregeneration Key Laboratory of Shanghai Universities, Tongji University School of Medicine, Shanghai 200092, China.,Advanced Institute of Translational Medicine
| | - Fangxia Guan
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan Province 450001, China
| | - Xiaoqing Zhang
- Shanghai Tenth People's Hospital, and Neuroregeneration Key Laboratory of Shanghai Universities, Tongji University School of Medicine, Shanghai 200092, China.,Advanced Institute of Translational Medicine.,The Collaborative Innovation Center for Brain Science, Tongji University, Shanghai 200092, China
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Yang Y, Shen W, Ni Y, Su Y, Yang Z, Zhao C. Impaired Interneuron Development after Foxg1 Disruption. Cereb Cortex 2018; 27:793-808. [PMID: 26620267 DOI: 10.1093/cercor/bhv297] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Interneurons play pivotal roles in the modulation of cortical function; however, the mechanisms that control interneuron development remain unclear. This study aimed to explore a new role for Foxg1 in interneuron development. By crossing Foxg1fl/fl mice with a Dlx5/6-Cre line, we determined that conditional disruption of Foxg1 in the subpallium results in defects in interneuron development. In developing interneurons, the expression levels of several receptors, including roundabout-1, Eph receptor A4, and C-X-C motif receptor 4/7, were strongly downregulated, which led to migration defects after Foxg1 ablation. The transcription factors Dlx1/2 and Mash1, which have been reported to be involved in interneuron development, were significantly upregulated at the mRNA levels. Foxg1 mutant cells developed shorter neurites and fewer branches and displayed severe migration defects in vitro. Notably, Prox1, which is a transcription factor that functions as a key regulator in the development of excitatory neurons, was also dramatically upregulated at both the mRNA and protein levels, suggesting that Prox1 is also important for interneuron development. Our work demonstrates that Foxg1 may act as a critical upstream regulator of Dlx1/2, Mash1, and Prox1 to control interneuron development. These findings will further our understanding of the molecular mechanisms of interneuron development.
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Affiliation(s)
- Ying Yang
- Key Laboratory of Developmental Genes and Human Diseases, MOE, Department of Anatomy and Neuroscience, School of Medicine, Southeast University, Nanjing 210009, China
| | - Wei Shen
- Key Laboratory of Developmental Genes and Human Diseases, MOE, Department of Anatomy and Neuroscience, School of Medicine, Southeast University, Nanjing 210009, China
| | - Yang Ni
- Key Laboratory of Developmental Genes and Human Diseases, MOE, Department of Anatomy and Neuroscience, School of Medicine, Southeast University, Nanjing 210009, China
| | - Yan Su
- Key Laboratory of Developmental Genes and Human Diseases, MOE, Department of Anatomy and Neuroscience, School of Medicine, Southeast University, Nanjing 210009, China
| | - Zhengang Yang
- Institutes of Brain Science, Fudan University, Shanghai 200032, China
| | - Chunjie Zhao
- Key Laboratory of Developmental Genes and Human Diseases, MOE, Department of Anatomy and Neuroscience, School of Medicine, Southeast University, Nanjing 210009, China.,Center of Depression, Beijing Institute for Brain Disorders, Beijing 100069, China
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Tousley A, Kegel-Gleason KB. Induced Pluripotent Stem Cells in Huntington's Disease Research: Progress and Opportunity. J Huntingtons Dis 2017; 5:99-131. [PMID: 27372054 PMCID: PMC4942721 DOI: 10.3233/jhd-160199] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Induced pluripotent stem cells (iPSCs) derived from controls and patients can act as a starting point for in vitro differentiation into human brain cells for discovery of novel targets and treatments for human disease without the same ethical limitations posed by embryonic stem cells. Numerous groups have successfully produced and characterized Huntington’s disease (HD) iPSCs with different CAG repeat lengths, including cells from patients with one or two HD alleles. HD iPSCs and the neural cell types derived from them recapitulate some disease phenotypes found in both human patients and animal models. Although these discoveries are encouraging, the use of iPSCs for cutting edge and reproducible research has been limited due to some of the inherent problems with cell lines and the technological differences in the way laboratories use them. The goal of this review is to summarize the current state of the HD iPSC field, and to highlight some of the issues that need to be addressed to maximize their potential as research tools.
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Affiliation(s)
| | - Kimberly B. Kegel-Gleason
- Correspondence to: Kimberly Kegel-Gleason, Assistant Professor in Neurology, Massachusetts General Hospital and Harvard Medical School, 114 16th Street, Room 2001, Charlestown, MA 02129, USA. Tel.: +1 617 724 8754; E-mail:
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Zic-Proteins Are Repressors of Dopaminergic Forebrain Fate in Mice and C. elegans. J Neurosci 2017; 37:10611-10623. [PMID: 28972122 DOI: 10.1523/jneurosci.3888-16.2017] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 09/07/2017] [Accepted: 09/15/2017] [Indexed: 11/21/2022] Open
Abstract
In the postnatal forebrain regionalized neural stem cells along the ventricular walls produce olfactory bulb (OB) interneurons with varying neurotransmitter phenotypes and positions. To understand the molecular basis of this region-specific variability we analyzed gene expression in the postnatal dorsal and lateral lineages in mice of both sexes from stem cells to neurons. We show that both lineages maintain transcription factor signatures of their embryonic site of origin, the pallium and subpallium. However, additional factors, including Zic1 and Zic2, are postnatally expressed in the dorsal stem cell compartment and maintained in the lineage that generates calretinin-positive GABAergic neurons for the OB. Functionally, we show that Zic1 and Zic2 induce the generation of calretinin-positive neurons while suppressing dopaminergic fate in the postnatal dorsal lineage. We investigated the evolutionary conservation of the dopaminergic repressor function of Zic proteins and show that it is already present in C. elegansSIGNIFICANCE STATEMENT The vertebrate brain generates thousands of different neuron types. In this work we investigate the molecular mechanisms underlying this variability. Using a genomics approach we identify the transcription factor signatures of defined neural stem cells and neuron populations. Based thereon we show that two related transcription factors, Zic1 and Zic2, are essential to control the balance between two defined neuron types in the postnatal brain. We show that this mechanism is conserved in evolutionary very distant species.
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35
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Yin JX, Ruan YN, Liu JL, Zhang SY, Racey P. FoxP2 expression in an echolocating bat (Rhinolophus ferrumequinum): Functional implications. Mamm Biol 2017. [DOI: 10.1016/j.mambio.2017.02.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Usui N, Co M, Harper M, Rieger MA, Dougherty JD, Konopka G. Sumoylation of FOXP2 Regulates Motor Function and Vocal Communication Through Purkinje Cell Development. Biol Psychiatry 2017; 81:220-230. [PMID: 27009683 PMCID: PMC4983264 DOI: 10.1016/j.biopsych.2016.02.008] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Revised: 01/29/2016] [Accepted: 02/01/2016] [Indexed: 12/22/2022]
Abstract
BACKGROUND Mutations in the gene encoding the transcription factor forkhead box P2 (FOXP2) result in brain developmental abnormalities, including reduced gray matter in both human patients and rodent models and speech and language deficits. However, neither the region-specific function of FOXP2 in the brain, in particular the cerebellum, nor the effects of any posttranslational modifications of FOXP2 in the brain and disorders have been explored. METHODS We characterized sumoylation of FOXP2 biochemically and analyzed the region-specific function and sumoylation of FOXP2 in the developing mouse cerebellum. Using in utero electroporation to manipulate the sumoylation state of FOXP2 as well as Foxp2 expression levels in Purkinje cells of the cerebellum in vivo, we reduced Foxp2 expression approximately 40% in the mouse cerebellum. Such a reduction approximates the haploinsufficiency observed in human patients who demonstrate speech and language impairments. RESULTS We identified sumoylation of FOXP2 at K674 (K673 in mice) in the cerebellum of neonates. In vitro co-immunoprecipitation and in vivo colocalization experiments suggest that PIAS3 acts as the small ubiquitin-like modifier E3 ligase for FOXP2 sumoylation. This sumoylation modifies transcriptional regulation by FOXP2. We demonstrated that FOXP2 sumoylation is required for regulation of cerebellar motor function and vocal communication, likely through dendritic outgrowth and arborization of Purkinje cells in the mouse cerebellum. CONCLUSIONS Sumoylation of FOXP2 in neonatal mouse cerebellum regulates Purkinje cell development and motor functions and vocal communication, demonstrating evidence for sumoylation in regulating mammalian behaviors.
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Affiliation(s)
- Noriyoshi Usui
- Department of Neuroscience, University of Texas Southwestern Medical Center, Dallas, TX 75390-911, USA
| | - Marissa Co
- Department of Neuroscience, University of Texas Southwestern Medical Center, Dallas, TX 75390-911, USA
| | - Matthew Harper
- Department of Neuroscience, University of Texas Southwestern Medical Center, Dallas, TX 75390-911, USA
| | - Michael A. Rieger
- Department of Genetics and Department of Psychiatry, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Joseph D. Dougherty
- Department of Genetics and Department of Psychiatry, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Genevieve Konopka
- Department of Neuroscience, University of Texas Southwestern Medical Center, Dallas, Texas.
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Andrews WD, Barber M, Nemitz M, Memi F, Parnavelas JG. Semaphorin3A-neuropilin1 signalling is involved in the generation of cortical interneurons. Brain Struct Funct 2016; 222:2217-2233. [PMID: 27858201 PMCID: PMC5504245 DOI: 10.1007/s00429-016-1337-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Accepted: 11/11/2016] [Indexed: 01/25/2023]
Abstract
Cortical interneurons are generated predominantly in the medial ganglionic eminence of the ventral telencephalon and migrate to the cortex during embryonic development. These cells express neuropilin (Nrp1 and Nrp2) receptors which mediate their response to the chemorepulsive class 3 semaphorin (Sema) ligands. We show here that semaphorins Sema3A and Sema3F are expressed in layers adjacent to cortical interneuron migratory streams as well as in the striatum, suggesting they may have a role in guiding these cells throughout their journey. Analysis of Sema3A -/- and Sema3F -/- mice during corticogenesis showed that absence of Sema3A, but not Sema3F, leads to aberrant migration of cortical interneurons through the striatum. Reduced number of cortical interneurons was found in the cortex of Sema3A -/-, Nrp1 -/- and Nrp2 -/- mice, as well as altered distribution in Sema3F -/-, Nrp1 -/-, Nrp2 -/- animals and especially in neuropilin double mutants. The observed decrease in interneurons in Sema3A -/- and Nrp1 -/- mice was due to altered proliferative activity of their progenitors highlighted by changes in their mitotic spindle positioning and angle of cleavage plane during cell division. These findings point to a novel role for Sema3A-Nrp1 signalling in progenitor cell dynamics and in the generation of interneurons in the ventral telencephalon.
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Affiliation(s)
- William D Andrews
- Department of Cell and Developmental Biology, University College London, Gower Street, London, WC1E 6BT, UK.
| | - Melissa Barber
- Department of Cell and Developmental Biology, University College London, Gower Street, London, WC1E 6BT, UK
| | - Marion Nemitz
- Department of Cell and Developmental Biology, University College London, Gower Street, London, WC1E 6BT, UK
| | - Fani Memi
- Department of Cell and Developmental Biology, University College London, Gower Street, London, WC1E 6BT, UK
| | - John G Parnavelas
- Department of Cell and Developmental Biology, University College London, Gower Street, London, WC1E 6BT, UK.
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38
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Early neuroimaging markers of FOXP2 intragenic deletion. Sci Rep 2016; 6:35192. [PMID: 27734906 PMCID: PMC5062117 DOI: 10.1038/srep35192] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 09/23/2016] [Indexed: 11/26/2022] Open
Abstract
FOXP2 is the major gene associated with severe, persistent, developmental speech and language disorders. While studies in the original family in which a FOXP2 mutation was found showed volume reduction and reduced activation in core language and speech networks, there have been no imaging studies of different FOXP2 mutations. We conducted a multimodal MRI study in an eight-year-old boy (A-II) with a de novo FOXP2 intragenic deletion. A-II showed marked bilateral volume reductions in the hippocampus, thalamus, globus pallidus, and caudate nucleus compared with 26 control males (effect sizes from −1 to −3). He showed no detectable functional MRI activity when repeating nonsense words. The hippocampus is implicated for the first time in FOXP2 diseases. We conclude that FOXP2 anomaly is either directly or indirectly associated with atypical development of widespread subcortical networks early in life.
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Li L, Liu H, Dong P, Li D, Legant WR, Grimm JB, Lavis LD, Betzig E, Tjian R, Liu Z. Real-time imaging of Huntingtin aggregates diverting target search and gene transcription. eLife 2016; 5. [PMID: 27484239 PMCID: PMC4972539 DOI: 10.7554/elife.17056] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Accepted: 07/07/2016] [Indexed: 01/21/2023] Open
Abstract
The presumptive altered dynamics of transient molecular interactions in vivo contributing to neurodegenerative diseases have remained elusive. Here, using single-molecule localization microscopy, we show that disease-inducing Huntingtin (mHtt) protein fragments display three distinct dynamic states in living cells - 1) fast diffusion, 2) dynamic clustering and 3) stable aggregation. Large, stable aggregates of mHtt exclude chromatin and form 'sticky' decoy traps that impede target search processes of key regulators involved in neurological disorders. Functional domain mapping based on super-resolution imaging reveals an unexpected role of aromatic amino acids in promoting protein-mHtt aggregate interactions. Genome-wide expression analysis and numerical simulation experiments suggest mHtt aggregates reduce transcription factor target site sampling frequency and impair critical gene expression programs in striatal neurons. Together, our results provide insights into how mHtt dynamically forms aggregates and disrupts the finely-balanced gene control mechanisms in neuronal cells.
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Affiliation(s)
- Li Li
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, United States.,LKS Bio-medical and Health Sciences Center, CIRM Center of Excellence, University of California, Berkeley, United States
| | - Hui Liu
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, United States
| | - Peng Dong
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, United States
| | - Dong Li
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, United States
| | - Wesley R Legant
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, United States
| | - Jonathan B Grimm
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, United States
| | - Luke D Lavis
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, United States.,Transcription Imaging Consortium, Howard Hughes Medical Institute, Ashburn, United States
| | - Eric Betzig
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, United States
| | - Robert Tjian
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, United States.,LKS Bio-medical and Health Sciences Center, CIRM Center of Excellence, University of California, Berkeley, United States.,Transcription Imaging Consortium, Howard Hughes Medical Institute, Ashburn, United States
| | - Zhe Liu
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, United States.,Transcription Imaging Consortium, Howard Hughes Medical Institute, Ashburn, United States
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Konopka G, Roberts TF. Insights into the Neural and Genetic Basis of Vocal Communication. Cell 2016; 164:1269-1276. [PMID: 26967292 DOI: 10.1016/j.cell.2016.02.039] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Indexed: 12/11/2022]
Abstract
The use of vocalizations to communicate information and elaborate social bonds is an adaptation seen in many vertebrate species. Human speech is an extreme version of this pervasive form of communication. Unlike the vocalizations exhibited by the majority of land vertebrates, speech is a learned behavior requiring early sensory exposure and auditory feedback for its development and maintenance. Studies in humans and a small number of other species have provided insights into the neural and genetic basis for learned vocal communication and are helping to delineate the roles of brain circuits across the cortex, basal ganglia, and cerebellum in generating vocal behaviors. This Review provides an outline of the current knowledge about these circuits and the genes implicated in vocal communication, as well as a perspective on future research directions in this field.
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Affiliation(s)
- Genevieve Konopka
- Department of Neuroscience, UT Southwestern Medical Center, Dallas, TX 75390-9111, USA.
| | - Todd F Roberts
- Department of Neuroscience, UT Southwestern Medical Center, Dallas, TX 75390-9111, USA.
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41
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Garcia-Calero E, Martinez S. FoxP1 Protein Shows Differential Layer Expression in the Parahippocampal Domain among Bird Species. BRAIN, BEHAVIOR AND EVOLUTION 2016; 87:242-51. [PMID: 27394721 DOI: 10.1159/000446601] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 05/02/2016] [Indexed: 11/19/2022]
Abstract
Different bird orders show diversity in neural capabilities supported by variations in brain morphology. The parahippocampal domain in the medial pallium, together with the hippocampus proper, plays an important role in memory skills. In the present work, we analyze the expression pattern of the FoxP1 protein in the parahippocampal area of four different bird species: the nonvocal learner birds quail and chicken (Galliformes) and two vocal learner birds, i.e. the zebra finch (Passeriformes) and the budgerigar (Psittaciformes), at different developmental and adult stages. We also analyze the expression of the calbindin protein in quails and zebra finches. We observed differences in the FoxP1 parahippocampal layer among bird species. In quails, chickens, and budgerigar, FoxP1 cells were located in the outer layers of the lateral and caudolateral parahippocampal sectors. In contrast, FoxP1 immunoreactive cells appeared in the inner layer of the same sectors in the zebra finch parahippocampal domain. These differences suggest two possibilities: either the FoxP1-positive cells described in quails, chickens, and budgerigars are a different population than the one described in the zebra finch, or there are changes in the pattern of radial migration in the parahippocampal area among birds. In the present study, we show that FoxP1 expression is more similar between quails, chickens, and budgerigars than between budgerigars and zebra finches in the parahippocampal area. This result contrasts with previous data in other telencephalic structures, like the calbindin-positive projection neurons described in the striatum of budgerigars and zebra finches but not in quails and chickens. All of these data point to diversity in the evolution of different morphological characters and, therefore, a mosaic model for telencephalic evolution in birds.
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Vicario A, Mendoza E, Abellán A, Scharff C, Medina L. Genoarchitecture of the extended amygdala in zebra finch, and expression of FoxP2 in cell corridors of different genetic profile. Brain Struct Funct 2016; 222:481-514. [PMID: 27160258 PMCID: PMC5225162 DOI: 10.1007/s00429-016-1229-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Accepted: 04/21/2016] [Indexed: 02/01/2023]
Abstract
We used a battery of genes encoding transcription factors (Pax6, Islet1, Nkx2.1, Lhx6, Lhx5, Lhx9, FoxP2) and neuropeptides to study the extended amygdala in developing zebra finches. We identified different components of the central extended amygdala comparable to those found in mice and chickens, including the intercalated amygdalar cells, the central amygdala, and the lateral bed nucleus of the stria terminalis. Many cells likely originate in the dorsal striatal domain, ventral striatal domain, or the pallidal domain, as is the case in mice and chickens. Moreover, a cell subpopulation of the central extended amygdala appears to originate in the prethalamic eminence. As a general principle, these different cells with specific genetic profiles and embryonic origin form separate or partially intermingled cell corridors along the extended amygdala, which may be involved in different functional pathways. In addition, we identified the medial amygdala of the zebra finch. Like in the chickens and mice, it is located in the subpallium and is rich in cells of pallido-preoptic origin, containing minor subpopulations of immigrant cells from the ventral pallium, alar hypothalamus and prethalamic eminence. We also proposed that the medial bed nucleus of the stria terminalis is composed of several parallel cell corridors with different genetic profile and embryonic origin: preoptic, pallidal, hypothalamic, and prethalamic. Several of these cell corridors with distinct origin express FoxP2, a transcription factor implicated in synaptic plasticity. Our results pave the way for studies using zebra finches to understand the neural basis of social behavior, in which the extended amygdala is involved.
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Affiliation(s)
- Alba Vicario
- Laboratory of Brain Development and Evolution, Department of Experimental Medicine, Faculty of Medicine, University of Lleida, Institute of Biomedical Research of Lleida (IRBLleida), Avda. Alcalde Rovira Roure 80, Catalunya, 25198, Lleida, Spain
| | | | - Antonio Abellán
- Laboratory of Brain Development and Evolution, Department of Experimental Medicine, Faculty of Medicine, University of Lleida, Institute of Biomedical Research of Lleida (IRBLleida), Avda. Alcalde Rovira Roure 80, Catalunya, 25198, Lleida, Spain
| | | | - Loreta Medina
- Laboratory of Brain Development and Evolution, Department of Experimental Medicine, Faculty of Medicine, University of Lleida, Institute of Biomedical Research of Lleida (IRBLleida), Avda. Alcalde Rovira Roure 80, Catalunya, 25198, Lleida, Spain.
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43
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Arber C, Precious SV, Cambray S, Risner-Janiczek JR, Kelly C, Noakes Z, Fjodorova M, Heuer A, Ungless MA, Rodríguez TA, Rosser AE, Dunnett SB, Li M. Activin A directs striatal projection neuron differentiation of human pluripotent stem cells. Development 2016; 142:1375-86. [PMID: 25804741 DOI: 10.1242/dev.117093] [Citation(s) in RCA: 113] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The efficient generation of striatal neurons from human embryonic stem cells (hESCs) and induced pluripotent stem cells (hiPSCs) is fundamental for realising their promise in disease modelling, pharmaceutical drug screening and cell therapy for Huntington's disease. GABAergic medium-sized spiny neurons (MSNs) are the principal projection neurons of the striatum and specifically degenerate in the early phase of Huntington's disease. Here we report that activin A induces lateral ganglionic eminence (LGE) characteristics in nascent neural progenitors derived from hESCs and hiPSCs in a sonic hedgehog-independent manner. Correct specification of striatal phenotype was further demonstrated by the induction of the striatal transcription factors CTIP2, GSX2 and FOXP2. Crucially, these human LGE progenitors readily differentiate into postmitotic neurons expressing the striatal projection neuron signature marker DARPP32, both in culture and following transplantation in the adult striatum in a rat model of Huntington's disease. Activin-induced neurons also exhibit appropriate striatal-like electrophysiology in vitro. Together, our findings demonstrate a novel route for efficient differentiation of GABAergic striatal MSNs from human pluripotent stem cells.
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Affiliation(s)
- Charles Arber
- Medical Research Council Clinical Sciences Centre, Imperial College London, Hammersmith Hospital Campus, Du Cane Road, London W12 ONN, UK
| | - Sophie V Precious
- Brain Repair Group, Neuroscience and Mental Health Research Institute, School of Bioscience, Cardiff University, Cardiff CF10 3AX, UK
| | - Serafí Cambray
- National Heart and Lung Institute, Imperial College London, Hammersmith Hospital Campus, Du Cane Road, London W12 ONN, UK
| | - Jessica R Risner-Janiczek
- Medical Research Council Clinical Sciences Centre, Imperial College London, Hammersmith Hospital Campus, Du Cane Road, London W12 ONN, UK
| | - Claire Kelly
- Brain Repair Group, Neuroscience and Mental Health Research Institute, School of Bioscience, Cardiff University, Cardiff CF10 3AX, UK
| | - Zoe Noakes
- Stem Cell Neurogenesis Group, Neuroscience and Mental Health Research Institute, School of Medicine and School of Bioscience, Cardiff University, Cardiff CF24 4HQ, UK
| | - Marija Fjodorova
- Stem Cell Neurogenesis Group, Neuroscience and Mental Health Research Institute, School of Medicine and School of Bioscience, Cardiff University, Cardiff CF24 4HQ, UK
| | - Andreas Heuer
- Brain Repair Group, Neuroscience and Mental Health Research Institute, School of Bioscience, Cardiff University, Cardiff CF10 3AX, UK
| | - Mark A Ungless
- Medical Research Council Clinical Sciences Centre, Imperial College London, Hammersmith Hospital Campus, Du Cane Road, London W12 ONN, UK
| | - Tristan A Rodríguez
- National Heart and Lung Institute, Imperial College London, Hammersmith Hospital Campus, Du Cane Road, London W12 ONN, UK
| | - Anne E Rosser
- Brain Repair Group, Neuroscience and Mental Health Research Institute, School of Bioscience, Cardiff University, Cardiff CF10 3AX, UK
| | - Stephen B Dunnett
- Brain Repair Group, Neuroscience and Mental Health Research Institute, School of Bioscience, Cardiff University, Cardiff CF10 3AX, UK
| | - Meng Li
- Medical Research Council Clinical Sciences Centre, Imperial College London, Hammersmith Hospital Campus, Du Cane Road, London W12 ONN, UK Stem Cell Neurogenesis Group, Neuroscience and Mental Health Research Institute, School of Medicine and School of Bioscience, Cardiff University, Cardiff CF24 4HQ, UK
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Fjodorova M, Noakes Z, Li M. How to make striatal projection neurons. NEUROGENESIS 2015; 2:e1100227. [PMID: 27606330 PMCID: PMC4973609 DOI: 10.1080/23262133.2015.1100227] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 09/16/2015] [Accepted: 09/18/2015] [Indexed: 12/17/2022]
Abstract
Medium spiny neurons (MSNs) are the main projection neurons of the striatum and are preferentially lost in Huntington's disease (HD). With no current cure for this neurodegenerative disorder, the specificity of neuronal loss in the striatum makes cell transplantation therapy an attractive avenue for its treatment. Also, given that MSNs are particularly vulnerable in HD, it is necessary to understand why these neurons degenerate in order to develop new therapeutic options. Both approaches require access to human MSN progenitors and their mature neuronal derivatives. Human embryonic stem cells and HD patient induced pluripotent stem cells (together referred to as hPSCs) may serve as an unlimited source of such tissue if they can be directed toward authentic striatal neuronal lineage. Understanding the MSN differentiation pathway in the brain is therefore of paramount importance for the generation of accurate protocols to obtain striatal cells in vitro. The focus of this mini review will be on striatal development and current methods to generate MSNs from hPSCs.
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Affiliation(s)
- Marija Fjodorova
- Stem Cell Neurogenesis Group; Neuroscience and Mental Health Research Institute; School of Medicine and School of Bioscience; Cardiff University ; Cardiff, UK
| | - Zoe Noakes
- Stem Cell Neurogenesis Group; Neuroscience and Mental Health Research Institute; School of Medicine and School of Bioscience; Cardiff University ; Cardiff, UK
| | - Meng Li
- Stem Cell Neurogenesis Group; Neuroscience and Mental Health Research Institute; School of Medicine and School of Bioscience; Cardiff University ; Cardiff, UK
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Parvalbumin+ Neurons and Npas1+ Neurons Are Distinct Neuron Classes in the Mouse External Globus Pallidus. J Neurosci 2015; 35:11830-47. [PMID: 26311767 DOI: 10.1523/jneurosci.4672-14.2015] [Citation(s) in RCA: 94] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
UNLABELLED Compelling evidence suggests that pathological activity of the external globus pallidus (GPe), a nucleus in the basal ganglia, contributes to the motor symptoms of a variety of movement disorders such as Parkinson's disease. Recent studies have challenged the idea that the GPe comprises a single, homogenous population of neurons that serves as a simple relay in the indirect pathway. However, we still lack a full understanding of the diversity of the neurons that make up the GPe. Specifically, a more precise classification scheme is needed to better describe the fundamental biology and function of different GPe neuron classes. To this end, we generated a novel multicistronic BAC (bacterial artificial chromosome) transgenic mouse line under the regulatory elements of the Npas1 gene. Using a combinatorial transgenic and immunohistochemical approach, we discovered that parvalbumin-expressing neurons and Npas1-expressing neurons in the GPe represent two nonoverlapping cell classes, amounting to 55% and 27% of the total GPe neuron population, respectively. These two genetically identified cell classes projected primarily to the subthalamic nucleus and to the striatum, respectively. Additionally, parvalbumin-expressing neurons and Npas1-expressing neurons were distinct in their autonomous and driven firing characteristics, their expression of intrinsic ion conductances, and their responsiveness to chronic 6-hydroxydopamine lesion. In summary, our data argue that parvalbumin-expressing neurons and Npas1-expressing neurons are two distinct functional classes of GPe neurons. This work revises our understanding of the GPe, and provides the foundation for future studies of its function and dysfunction. SIGNIFICANCE STATEMENT Until recently, the heterogeneity of the constituent neurons within the external globus pallidus (GPe) was not fully appreciated. We addressed this knowledge gap by discovering two principal GPe neuron classes, which were identified by their nonoverlapping expression of the markers parvalbumin and Npas1. Our study provides evidence that parvalbumin and Npas1 neurons have different topologies within the basal ganglia.
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FoxP2 protein levels regulate cell morphology changes and migration patterns in the vertebrate developing telencephalon. Brain Struct Funct 2015; 221:2905-17. [DOI: 10.1007/s00429-015-1079-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Accepted: 06/22/2015] [Indexed: 02/05/2023]
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47
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Andrews WD, Davidson K, Tamamaki N, Ruhrberg C, Parnavelas JG. Altered proliferative ability of neuronal progenitors in PlexinA1 mutant mice. J Comp Neurol 2015; 524:518-34. [PMID: 25975775 PMCID: PMC4737253 DOI: 10.1002/cne.23806] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Revised: 04/30/2015] [Accepted: 04/30/2015] [Indexed: 12/12/2022]
Abstract
Cortical interneurons are generated predominantly in the medial ganglionic eminence (MGE) and migrate through the ventral and dorsal telencephalon before taking their final positions within the developing cortical plate. Previously we demonstrated that interneurons from Robo1 knockout (Robo1(-/-)) mice contain reduced levels of neuropilin 1 (Nrp1) and PlexinA1 receptors, rendering them less responsive to the chemorepulsive actions of semaphorin ligands expressed in the striatum and affecting their course of migration (Hernandez-Miranda et al. [2011] J. Neurosci. 31:6174-6187). Earlier studies have highlighted the importance of Nrp1 and Nrp2 in interneuron migration, and here we assess the role of PlexinA1 in this process. We observed significantly fewer cells expressing the interneuron markers Gad67 and Lhx6 in the cortex of PlexinA1(-/-) mice compared with wild-type littermates at E14.5 and E18.5. Although the level of apoptosis was similar in the mutant and control forebrain, proliferation was significantly reduced in the former. Furthermore, progenitor cells in the MGE of PlexinA1(-/-) mice appeared to be poorly anchored to the ventricular surface and showed reduced adhesive properties, which may account for the observed reduction in proliferation. Together our data uncover a novel role for PlexinA1 in forebrain development.
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Affiliation(s)
- William D Andrews
- Department of Cell and Developmental Biology, University College London, London, WC1E 6BT, United Kingdom
| | - Kathryn Davidson
- Division of Visual Science and Molecular Genetics, Institute of Ophthalmology, University College London, London, WC1E 6BT, United Kingdom
| | - Nobuaki Tamamaki
- Department of Morphological Neural Science, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, 860 0862, Japan
| | - Christiana Ruhrberg
- Division of Visual Science and Molecular Genetics, Institute of Ophthalmology, University College London, London, WC1E 6BT, United Kingdom
| | - John G Parnavelas
- Department of Cell and Developmental Biology, University College London, London, WC1E 6BT, United Kingdom
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Lin L, Yuan J, Sander B, Golas MM. In Vitro Differentiation of Human Neural Progenitor Cells Into Striatal GABAergic Neurons. Stem Cells Transl Med 2015; 4:775-88. [PMID: 25972145 DOI: 10.5966/sctm.2014-0083] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Accepted: 03/05/2015] [Indexed: 11/16/2022] Open
Abstract
UNLABELLED : Huntington's disease (HD) results from a CAG repeat expansion in the gene encoding the huntingtin protein. This inherited disorder is characterized by progressive neurodegeneration. In particular, HD progression involves the loss of striatal projection neurons. The limited availability of reliable sources of human striatal projection neurons currently hampers our understanding of HD mechanisms and hinders the development of novel HD treatments. In this paper, we described two- and three-step methods for differentiating human neural progenitor cells toward striatal projection neurons. In the two-step differentiation protocol, 90%, 54%, and 6% of MAP2-positive cells were immunopositive for GABA, calbindin (CALB1), and DARPP-32/PPP1R1B, respectively. In the three-step differentiation protocol, 96%, 84%, and 21% of MAP2-positive cells were immunopositive for GABA, calbindin, and DARPP-32/PPP1R1B, respectively. In line with a striatal projection neuron phenotype, cells differentiated with our protocols displayed significantly increased expression of MAP2, CALB1, DARPP-32/PPP1R1B, ARPP21, and CTIP2. Application of glutamate receptor agonists induced calcium influx; accordingly, the cells also expressed various ionotropic glutamate receptor subunits. Differentiated cells also released GABA on stimulation. We suggest that our three-step differentiation protocol presents a reliable and simplified method for the generation of striatal projection neurons, yielding a critical resource for neuronal physiology and neurodegenerative disorder studies. SIGNIFICANCE The earliest changes in the neurodegenerative disorder Huntington's disease affect a specific type of brain neurons, the so-called medium spiny neurons of the striatum. In this study, two protocols were developed for the differentiation of neural progenitor cells into striatal medium spiny neurons, and the differentiated neurons were extensively characterized. The data indicate that the three-step differentiation protocol presents a reliable and simplified method for the generation of striatal medium spiny neurons. The generated striatal medium spiny neurons could represent a critical resource for the study of neurodegenerative disorders, a model system for drug discovery, and a step toward cell-based regeneration therapies.
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Affiliation(s)
- Lin Lin
- Department of Biomedicine, Stereology and Electron Microscopy Laboratory, Department of Clinical Medicine, and Center for Stochastic Geometry and Advanced Bioimaging, Aarhus University, Aarhus, Denmark
| | - Juan Yuan
- Department of Biomedicine, Stereology and Electron Microscopy Laboratory, Department of Clinical Medicine, and Center for Stochastic Geometry and Advanced Bioimaging, Aarhus University, Aarhus, Denmark
| | - Bjoern Sander
- Department of Biomedicine, Stereology and Electron Microscopy Laboratory, Department of Clinical Medicine, and Center for Stochastic Geometry and Advanced Bioimaging, Aarhus University, Aarhus, Denmark
| | - Monika M Golas
- Department of Biomedicine, Stereology and Electron Microscopy Laboratory, Department of Clinical Medicine, and Center for Stochastic Geometry and Advanced Bioimaging, Aarhus University, Aarhus, Denmark
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49
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Dodson PD, Larvin JT, Duffell JM, Garas FN, Doig NM, Kessaris N, Duguid IC, Bogacz R, Butt SJB, Magill PJ. Distinct developmental origins manifest in the specialized encoding of movement by adult neurons of the external globus pallidus. Neuron 2015; 86:501-13. [PMID: 25843402 PMCID: PMC4416107 DOI: 10.1016/j.neuron.2015.03.007] [Citation(s) in RCA: 96] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2014] [Revised: 01/23/2015] [Accepted: 02/14/2015] [Indexed: 01/12/2023]
Abstract
Transcriptional codes initiated during brain development are ultimately realized in adulthood as distinct cell types performing specialized roles in behavior. Focusing on the mouse external globus pallidus (GPe), we demonstrate that the potential contributions of two GABAergic GPe cell types to voluntary action are fated from early life to be distinct. Prototypic GPe neurons derive from the medial ganglionic eminence of the embryonic subpallium and express the transcription factor Nkx2-1. These neurons fire at high rates during alert rest, and encode movements through heterogeneous firing rate changes, with many neurons decreasing their activity. In contrast, arkypallidal GPe neurons originate from lateral/caudal ganglionic eminences, express the transcription factor FoxP2, fire at low rates during rest, and encode movements with robust increases in firing. We conclude that developmental diversity positions prototypic and arkypallidal neurons to fulfil distinct roles in behavior via their disparate regulation of GABA release onto different basal ganglia targets. Arkypallidal and prototypic GPe cells have distinct origins and transcriptional codes Arkypallidal neurons rapidly and robustly increase firing rate at movement onset Movement is accurately encoded by single arkypallidal or prototypic neurons Two GPe cell types are fated to affect different targets in distinct ways in behavior
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Affiliation(s)
- Paul D Dodson
- Medical Research Council Brain Network Dynamics Unit, Department of Pharmacology, University of Oxford, Oxford OX1 3QT, UK; Oxford Parkinson's Disease Centre, University of Oxford, Oxford OX1 3QX, UK.
| | - Joseph T Larvin
- Medical Research Council Brain Network Dynamics Unit, Department of Pharmacology, University of Oxford, Oxford OX1 3QT, UK
| | - James M Duffell
- Medical Research Council Brain Network Dynamics Unit, Department of Pharmacology, University of Oxford, Oxford OX1 3QT, UK
| | - Farid N Garas
- Medical Research Council Brain Network Dynamics Unit, Department of Pharmacology, University of Oxford, Oxford OX1 3QT, UK
| | - Natalie M Doig
- Medical Research Council Brain Network Dynamics Unit, Department of Pharmacology, University of Oxford, Oxford OX1 3QT, UK
| | - Nicoletta Kessaris
- Wolfson Institute for Biomedical Research and Department of Cell and Developmental Biology, University College London, London WC1E 6BT, UK
| | - Ian C Duguid
- Centre for Integrative Physiology, School of Biomedical Sciences, University of Edinburgh, Edinburgh EH8 9XD, UK
| | - Rafal Bogacz
- Medical Research Council Brain Network Dynamics Unit, Department of Pharmacology, University of Oxford, Oxford OX1 3QT, UK; Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford OX3 9DU, UK
| | - Simon J B Butt
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford OX1 3QX, UK
| | - Peter J Magill
- Medical Research Council Brain Network Dynamics Unit, Department of Pharmacology, University of Oxford, Oxford OX1 3QT, UK; Oxford Parkinson's Disease Centre, University of Oxford, Oxford OX1 3QX, UK.
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50
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Mendoza E, Tokarev K, Düring DN, Retamosa EC, Weiss M, Arpenik N, Scharff C. Differential coexpression of FoxP1, FoxP2, and FoxP4 in the Zebra Finch (Taeniopygia guttata) song system. J Comp Neurol 2015; 523:1318-40. [PMID: 25556631 DOI: 10.1002/cne.23731] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 12/16/2014] [Accepted: 12/16/2014] [Indexed: 11/07/2022]
Abstract
Heterozygous disruptions of the Forkhead transcription factor FoxP2 impair acquisition of speech and language. Experimental downregulation in brain region Area X of the avian ortholog FoxP2 disrupts song learning in juvenile male zebra finches. In vitro, transcriptional activity of FoxP2 requires dimerization with itself or with paralogs FoxP1 and FoxP4. Whether this is the case in vivo is unknown. To provide the means for future functional studies we cloned FoxP4 from zebra finches and compared regional and cellular coexpression of FoxP1, FoxP2, and FoxP4 mRNA and protein in brains of juvenile and adult male zebra finches. In the telencephalic song nuclei HVC, RA, and Area X, the three investigated FoxPs were either expressed alone or occurred in specific combinations with each other, as shown by double in situ hybridization and triple immunohistochemistry. FoxP1 and FoxP4 but not FoxP2 were expressed in RA and in the HVCRA and HVCX projection neurons. In Area X and the surrounding striatum the density of neurons expressing all three FoxPs together or FoxP1 and FoxP4 together was significantly higher than the density of neurons expressing other combinations. Interestingly, the proportions of Area X neurons expressing particular combinations of FoxPs remained constant at all ages. In addition, FoxP-expressing neurons in adult Area X express dopamine receptors 1A, 1B, and 2. Together, these data provide the first evidence that Area X neurons can coexpress all avian FoxP subfamily members, thus allowing for a variety of regulatory possibilities via heterodimerization that could impact song behavior in zebra finches.
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Affiliation(s)
- Ezequiel Mendoza
- Institut für Verhaltensbiologie, Freie Universität Berlin, 14195, Berlin, Germany
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