1
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Cook AG, Bishop TV, Crowe HR, Stevens DN, Reine L, Joyner AL, Lawton AK. Cell division angle predicts the level of tissue mechanics that tune the amount of cerebellar folding. Development 2024; 151:dev202184. [PMID: 38251865 PMCID: PMC10911135 DOI: 10.1242/dev.202184] [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: 07/17/2023] [Accepted: 01/10/2024] [Indexed: 01/23/2024]
Abstract
Modeling has led to proposals that the amount of neural tissue folding is set by the level of differential expansion between tissue layers and that the wavelength is set by the thickness of the outer layer. Here, we used inbred mouse strains with distinct amounts of cerebellar folding to investigate these predictions. We identified a distinct critical period during which the folding amount diverges between the two strains. In this period, regional changes in the level of differential expansion between the external granule layer (EGL) and underlying core correlate with the folding amount in each strain. Additionally, the thickness of the EGL varies regionally during the critical period alongside corresponding changes in wavelength. The number of SHH-expressing Purkinje cells predicts the folding amount, but the proliferation rate in the EGL is the same between the strains. However, regional changes in the cell division angle within the EGL predicts both the tangential expansion and the thickness of the EGL. Cell division angle is likely a tunable mechanism whereby both the level of differential expansion along the perimeter and the thickness of the EGL are regionally tuned to set the amount and wavelength of folding.
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Affiliation(s)
- Amber G. Cook
- Department of Biological Sciences, Mississippi State University, MS 39762, USA
| | - Taylor V. Bishop
- Department of Biological Sciences, Mississippi State University, MS 39762, USA
| | - Hannah R. Crowe
- Department of Biological Sciences, Mississippi State University, MS 39762, USA
| | - Daniel N. Stevens
- Developmental Biology Program, Sloan Kettering Institute, NY 10065, USA
| | - Lauren Reine
- Department of Biological Sciences, Mississippi State University, MS 39762, USA
| | | | - Andrew K. Lawton
- Department of Biological Sciences, Mississippi State University, MS 39762, USA
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2
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Keever KM, Li Y, Womble PD, Sullens DG, Otazu GH, Lugo JN, Ramos RL. Neocortical and cerebellar malformations affect flurothyl-induced seizures in female C57BL/6J mice. Front Neurosci 2023; 17:1271744. [PMID: 38027492 PMCID: PMC10651747 DOI: 10.3389/fnins.2023.1271744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 10/03/2023] [Indexed: 12/01/2023] Open
Abstract
Brain malformations cause cognitive disability and seizures in both human and animal models. Highly laminated structures such as the neocortex and cerebellum are vulnerable to malformation, affecting lamination and neuronal connectivity as well as causing heterotopia. The objective of the present study was to determine if sporadic neocortical and/or cerebellar malformations in C57BL/6J mice are correlated with reduced seizure threshold. The inhaled chemi-convulsant flurothyl was used to induce generalized, tonic-clonic seizures in male and female C57BL/6J mice, and the time to seizure onset was recorded as a functional correlate of brain excitability changes. Following seizures, mice were euthanized, and brains were extracted for histology. Cryosections of the neocortex and cerebellar vermis were stained and examined for the presence of molecular layer heterotopia as previously described in C57BL/6J mice. Over 60% of mice had neocortical and/or cerebellar heterotopia. No sex differences were observed in the prevalence of malformations. Significantly reduced seizure onset time was observed dependent on sex and the type of malformation present. These results raise important questions regarding the presence of malformations in C57BL/6J mice used in the study of brain development, epilepsy, and many other diseases of the nervous system.
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Affiliation(s)
- Katherine M. Keever
- Department of Biomedical Sciences, New York Institute of Technology College of Osteopathic Medicine, Old Westbury, NY, United States
| | - Ying Li
- Department of Biomedical Sciences, New York Institute of Technology College of Osteopathic Medicine, Old Westbury, NY, United States
| | - Paige D. Womble
- Department of Psychology and Neuroscience, Baylor University, Waco, TX, United States
| | - D. Gregory Sullens
- Department of Psychology and Neuroscience, Baylor University, Waco, TX, United States
| | - Gonzalo H. Otazu
- Department of Biomedical Sciences, New York Institute of Technology College of Osteopathic Medicine, Old Westbury, NY, United States
| | - Joaquin N. Lugo
- Department of Psychology and Neuroscience, Baylor University, Waco, TX, United States
| | - Raddy L. Ramos
- Department of Biomedical Sciences, New York Institute of Technology College of Osteopathic Medicine, Old Westbury, NY, United States
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3
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Cook AG, Bishop TV, Crowe HR, Stevens D, Reine L, Joyner AL, Lawton AK. Cell division angle regulates the tissue mechanics and tunes the amount of cerebellar folding. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.07.21.549165. [PMID: 37503300 PMCID: PMC10370211 DOI: 10.1101/2023.07.21.549165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Modeling has proposed that the amount of neural tissue folding is set by the level of differential-expansion between tissue layers and that the wavelength is set by the thickness of the outer layer. Here we used inbred mouse strains with distinct amounts of cerebellar folding to investigate these predictions. We identified a critical period where the folding amount diverges between the strains. In this period, regional changes in the level of differential-expansion between the external granule layer (EGL) and underlying core correlate with the folding amount in each strain. Additionally, the thickness of the EGL is regionally adjusted during the critical period alongside corresponding changes in wavelength. While the number of SHH-expressing Purkinje cells predicts the folding amount, the proliferation rate in the EGL is the same between the strains. However, regional changes in the cell division angle within the EGL predicts both the tangential-expansion and thickness of the EGL. Cell division angle is likely a tunable mechanism whereby both the level of differential-expansion and thickness of the EGL are regionally tuned to set the amount and wavelength of folding.
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Affiliation(s)
| | | | | | - Daniel Stevens
- Developmental Biology Program, Sloan Kettering Institute, United States
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4
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Accogli A, Lu S, Musante I, Scudieri P, Rosenfeld JA, Severino M, Baldassari S, Iacomino M, Riva A, Balagura G, Piccolo G, Minetti C, Roberto D, Xia F, Razak R, Lawrence E, Hussein M, Chang EYH, Holick M, Calì E, Aliberto E, De-Sarro R, Gambardella A, Network UD, Group SYNS, Emrick L, McCaffery PJA, Clagett-Dame M, Marcogliese PC, Bellen HJ, Lalani SR, Zara F, Striano P, Salpietro V. Loss of Neuron Navigator 2 Impairs Brain and Cerebellar Development. CEREBELLUM (LONDON, ENGLAND) 2023; 22:206-222. [PMID: 35218524 PMCID: PMC9985553 DOI: 10.1007/s12311-022-01379-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/27/2022] [Indexed: 10/19/2022]
Abstract
Cerebellar hypoplasia and dysplasia encompass a group of clinically and genetically heterogeneous disorders frequently associated with neurodevelopmental impairment. The Neuron Navigator 2 (NAV2) gene (MIM: 607,026) encodes a member of the Neuron Navigator protein family, widely expressed within the central nervous system (CNS), and particularly abundant in the developing cerebellum. Evidence across different species supports a pivotal function of NAV2 in cytoskeletal dynamics and neurite outgrowth. Specifically, deficiency of Nav2 in mice leads to cerebellar hypoplasia with abnormal foliation due to impaired axonal outgrowth. However, little is known about the involvement of the NAV2 gene in human disease phenotypes. In this study, we identified a female affected with neurodevelopmental impairment and a complex brain and cardiac malformations in which clinical exome sequencing led to the identification of NAV2 biallelic truncating variants. Through protein expression analysis and cell migration assay in patient-derived fibroblasts, we provide evidence linking NAV2 deficiency to cellular migration deficits. In model organisms, the overall CNS histopathology of the Nav2 hypomorphic mouse revealed developmental anomalies including cerebellar hypoplasia and dysplasia, corpus callosum hypo-dysgenesis, and agenesis of the olfactory bulbs. Lastly, we show that the NAV2 ortholog in Drosophila, sickie (sick) is widely expressed in the fly brain, and sick mutants are mostly lethal with surviving escapers showing neurobehavioral phenotypes. In summary, our results unveil a novel human neurodevelopmental disorder due to genetic loss of NAV2, highlighting a critical conserved role of the NAV2 gene in brain and cerebellar development across species.
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Affiliation(s)
- Andrea Accogli
- Division of Medical Genetics, Department of Specialized Medicine, McGill University, Montreal, Canada
- Department of Human Genetics, McGill University, Montreal, QC, Canada
| | - Shenzhao Lu
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, 77030, USA
- Jan and Dan Duncan Neurological Research Institute, Texas Childrens Hospital, Houston, TX, 77030, USA
- Howard Hughes Medical Institute, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Ilaria Musante
- Unit of Medical Genetics, IRCCS Istituto Giannina Gaslini, Genoa, Italy
- Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), University of Genoa, Genoa, Italy
| | - Paolo Scudieri
- Unit of Medical Genetics, IRCCS Istituto Giannina Gaslini, Genoa, Italy
- Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), University of Genoa, Genoa, Italy
| | - Jill A Rosenfeld
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, 77030, USA
| | | | - Simona Baldassari
- Unit of Medical Genetics, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Michele Iacomino
- Unit of Medical Genetics, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Antonella Riva
- Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), University of Genoa, Genoa, Italy
| | - Ganna Balagura
- Unit of Medical Genetics, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Gianluca Piccolo
- Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), University of Genoa, Genoa, Italy
- Pediatric Neurology and Muscular Diseases Unit, IRCCS Giannina Gaslini Institute, Genoa, Italy
| | - Carlo Minetti
- Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), University of Genoa, Genoa, Italy
- Pediatric Neurology and Muscular Diseases Unit, IRCCS Giannina Gaslini Institute, Genoa, Italy
| | - Denis Roberto
- Child Neurology and Psychiatry Unit, System Medicine Department, Tor Vergata University of Rome, 00133, Rome, Italy
| | - Fan Xia
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, 77030, USA
- Baylor Genetics Laboratories, Houston, TX, USA
| | | | - Emily Lawrence
- Department of Cardiology, Texas Childrens Hospital, Houston, USA
| | - Mohamed Hussein
- Department of Ophthalmology, Texas Childrens Hospital, Houston, USA
| | | | - Michelle Holick
- Texas Childrens Hospital, Houston, TX, USA
- Department of Pediatrics, Division of Neurology and Developmental Neuroscience, Baylor College of Medicine, Houston, TX, USA
| | - Elisa Calì
- Department of Neuromuscular Diseases, University College London, Queen Square Institute of Neurology, London, WC1N 3BG, UK
| | | | - Rosalba De-Sarro
- Department of Clinical and Experimental Medicine, Policlinic "G. Martino", University of Messina, 98100, Messina, Italy
| | - Antonio Gambardella
- Department of Medical and Surgical Sciences, Universita' Degli Studi "Magna Graecia" Viale Europa, 88100, CATANZARO, Italy
| | | | | | - Lisa Emrick
- Jan and Dan Duncan Neurological Research Institute, Texas Childrens Hospital, Houston, TX, 77030, USA
- Texas Childrens Hospital, Houston, TX, USA
- Department of Pediatrics, Division of Neurology and Developmental Neuroscience, Baylor College of Medicine, Houston, TX, USA
| | - Peter J A McCaffery
- Institute of Medical Sciences, University of Aberdeen, Foresterhill, Aberdeen, UK
| | - Margaret Clagett-Dame
- Department of Biochemistry, College of Agricultural and Life Sciences, University of Wisconsin, Madison, WI, 53706, USA
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin, Madison, WI, 53706, USA
| | - Paul C Marcogliese
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, 77030, USA
- Jan and Dan Duncan Neurological Research Institute, Texas Childrens Hospital, Houston, TX, 77030, USA
| | - Hugo J Bellen
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, 77030, USA
- Jan and Dan Duncan Neurological Research Institute, Texas Childrens Hospital, Houston, TX, 77030, USA
- Howard Hughes Medical Institute, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Seema R Lalani
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, 77030, USA
- Texas Childrens Hospital, Houston, TX, USA
| | - Federico Zara
- Unit of Medical Genetics, IRCCS Istituto Giannina Gaslini, Genoa, Italy
- Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), University of Genoa, Genoa, Italy
| | - Pasquale Striano
- Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), University of Genoa, Genoa, Italy
- Pediatric Neurology and Muscular Diseases Unit, IRCCS Giannina Gaslini Institute, Genoa, Italy
| | - Vincenzo Salpietro
- Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), University of Genoa, Genoa, Italy.
- Pediatric Neurology and Muscular Diseases Unit, IRCCS Giannina Gaslini Institute, Genoa, Italy.
- Department of Neuromuscular Diseases, University College London, Queen Square Institute of Neurology, London, WC1N 3BG, UK.
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5
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Otazu GH, Li Y, Lodato Z, Elnasher A, Keever KM, Li Y, Ramos RL. Neurodevelopmental malformations of the cerebellum and neocortex in the Shank3 and Cntnap2 mouse models of autism. Neurosci Lett 2021; 765:136257. [PMID: 34555490 DOI: 10.1016/j.neulet.2021.136257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 09/15/2021] [Accepted: 09/16/2021] [Indexed: 12/28/2022]
Abstract
There are many mouse models of autism with broad use in neuroscience research. Genetic background can be a major contributor to the phenotype observed in any mouse model of disease, including genetic models of autism. C57BL/6 mice display spontaneous glio-neuronal heterotopia in the cerebellar vermis and neocortex which may also exist in mouse models of autism created on this background. In the present report, we document the presence of cerebellar and neocortical heterotopia in heterozygous and KO Shank3 and Cntnap2 mice which are due to the C57BL/6 genotype and discuss the role these malformations may play in research using these genetic models of autism.
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Affiliation(s)
- Gonzalo H Otazu
- Department of Biomedical Sciences, New York Institute of Technology College of Osteopathic Medicine, Old Westbury, NY 11568, United States
| | - Yan Li
- Department of Biomedical Sciences, New York Institute of Technology College of Osteopathic Medicine, Old Westbury, NY 11568, United States
| | - Zachary Lodato
- Department of Biomedical Sciences, New York Institute of Technology College of Osteopathic Medicine, Old Westbury, NY 11568, United States
| | - Adel Elnasher
- Department of Biomedical Sciences, New York Institute of Technology College of Osteopathic Medicine, Old Westbury, NY 11568, United States
| | - Katherine M Keever
- Department of Biomedical Sciences, New York Institute of Technology College of Osteopathic Medicine, Old Westbury, NY 11568, United States
| | - Ying Li
- Department of Biomedical Sciences, New York Institute of Technology College of Osteopathic Medicine, Old Westbury, NY 11568, United States
| | - Raddy L Ramos
- Department of Biomedical Sciences, New York Institute of Technology College of Osteopathic Medicine, Old Westbury, NY 11568, United States.
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6
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Cuoco JA, Esposito AW, Moriarty S, Tang Y, Seth S, Toia AR, Kampton EB, Mayr Y, Khan M, Khan MB, Mullen BR, Ackman JB, Siddiqi F, Wolfe JH, Savinova OV, Ramos RL. Malformation of the Posterior Cerebellar Vermis Is a Common Neuroanatomical Phenotype of Genetically Engineered Mice on the C57BL/6 Background. THE CEREBELLUM 2019; 17:173-190. [PMID: 29043563 DOI: 10.1007/s12311-017-0892-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
C57BL/6 mice exhibit spontaneous cerebellar malformations consisting of heterotopic neurons and glia in the molecular layer of the posterior vermis, indicative of neuronal migration defect during cerebellar development. Recognizing that many genetically engineered (GE) mouse lines are produced from C57BL/6 ES cells or backcrossed to this strain, we performed histological analyses and found that cerebellar heterotopia were a common feature present in the majority of GE lines on this background. Furthermore, we identify GE mouse lines that will be valuable in the study of cerebellar malformations including diverse driver, reporter, and optogenetic lines. Finally, we discuss the implications that these data have on the use of C57BL/6 mice and GE mice on this background in studies of cerebellar development or as models of disease.
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Affiliation(s)
- Joshua A Cuoco
- Department of Biomedical Sciences, College of Osteopathic Medicine, New York Institute of Technology, Northern Boulevard, PO Box 8000, Old Westbury, NY, 11568-8000, USA
| | - Anthony W Esposito
- Department of Biomedical Sciences, College of Osteopathic Medicine, New York Institute of Technology, Northern Boulevard, PO Box 8000, Old Westbury, NY, 11568-8000, USA
| | - Shannon Moriarty
- Department of Biomedical Sciences, College of Osteopathic Medicine, New York Institute of Technology, Northern Boulevard, PO Box 8000, Old Westbury, NY, 11568-8000, USA
| | - Ying Tang
- Department of Biomedical Sciences, College of Osteopathic Medicine, New York Institute of Technology, Northern Boulevard, PO Box 8000, Old Westbury, NY, 11568-8000, USA
| | - Sonika Seth
- Department of Biomedical Sciences, College of Osteopathic Medicine, New York Institute of Technology, Northern Boulevard, PO Box 8000, Old Westbury, NY, 11568-8000, USA
| | - Alyssa R Toia
- Department of Biomedical Sciences, College of Osteopathic Medicine, New York Institute of Technology, Northern Boulevard, PO Box 8000, Old Westbury, NY, 11568-8000, USA
| | - Elias B Kampton
- Department of Biomedical Sciences, College of Osteopathic Medicine, New York Institute of Technology, Northern Boulevard, PO Box 8000, Old Westbury, NY, 11568-8000, USA
| | - Yevgeniy Mayr
- Department of Biomedical Sciences, College of Osteopathic Medicine, New York Institute of Technology, Northern Boulevard, PO Box 8000, Old Westbury, NY, 11568-8000, USA
| | - Mussarah Khan
- Department of Biomedical Sciences, College of Osteopathic Medicine, New York Institute of Technology, Northern Boulevard, PO Box 8000, Old Westbury, NY, 11568-8000, USA
| | - Mohammad B Khan
- Department of Biomedical Sciences, College of Osteopathic Medicine, New York Institute of Technology, Northern Boulevard, PO Box 8000, Old Westbury, NY, 11568-8000, USA
| | - Brian R Mullen
- Department of Molecular, Cell and Developmental Biology, University of California Santa Cruz, Santa Cruz, CA, 95064, USA
| | - James B Ackman
- Department of Molecular, Cell and Developmental Biology, University of California Santa Cruz, Santa Cruz, CA, 95064, USA
| | - Faez Siddiqi
- Division of Neurology and Research Institute of Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | - John H Wolfe
- Division of Neurology and Research Institute of Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
- Department of Pediatrics, Perelman School of Medicine and W.F. Goodman Center for Comparative Medical Genetics, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Olga V Savinova
- Department of Biomedical Sciences, College of Osteopathic Medicine, New York Institute of Technology, Northern Boulevard, PO Box 8000, Old Westbury, NY, 11568-8000, USA
| | - Raddy L Ramos
- Department of Biomedical Sciences, College of Osteopathic Medicine, New York Institute of Technology, Northern Boulevard, PO Box 8000, Old Westbury, NY, 11568-8000, USA.
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7
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Klinefelter K, Hooven MK, Bates C, Colter BT, Dailey A, Infante SK, Kania-Korwel I, Lehmler HJ, López-Juárez A, Ludwig CP, Curran CP. Genetic differences in the aryl hydrocarbon receptor and CYP1A2 affect sensitivity to developmental polychlorinated biphenyl exposure in mice: relevance to studies of human neurological disorders. Mamm Genome 2017; 29:112-127. [PMID: 29197979 DOI: 10.1007/s00335-017-9728-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Accepted: 11/28/2017] [Indexed: 01/28/2023]
Abstract
Polychlorinated biphenyls (PCBs) are persistent organic pollutants that remain a human health concern with newly discovered sources of contamination and ongoing bioaccumulation and biomagnification. Children exposed during early brain development are at highest risk of neurological deficits, but highly exposed adults reportedly have an increased risk of Parkinson's disease. Our previous studies found allelic differences in the aryl hydrocarbon receptor and cytochrome P450 1A2 (CYP1A2) affect sensitivity to developmental PCB exposure, resulting in cognitive deficits and motor dysfunction. High-affinity Ahr b Cyp1a2(-/-) mice were most sensitive compared with poor-affinity Ahr d Cyp1a2(-/-) and wild-type Ahr b Cyp1a2(+/+) mice. Our follow-up studies assessed biochemical, histological, and gene expression changes to identify the brain regions and pathways affected. We also measured PCB and metabolite levels in tissues to determine if genotype altered toxicokinetics. We found evidence of AHR-mediated toxicity with reduced thymus and spleen weights and significantly reduced thyroxine at P14 in PCB-exposed pups. In the brain, the greatest changes were seen in the cerebellum where a foliation defect was over-represented in Cyp1a2(-/-) mice. In contrast, we found no difference in tyrosine hydroxylase immunostaining in the striatum. Gene expression patterns varied across the three genotypes, but there was clear evidence of AHR activation. Distribution of parent PCB congeners also varied by genotype with strikingly high levels of PCB 77 in poor-affinity Ahr d Cyp1a2(-/-) while Ahr b Cyp1a2(+/+) mice effectively sequestered coplanar PCBs in the liver. Together, our data suggest that the AHR pathway plays a role in developmental PCB neurotoxicity, but we found little evidence that developmental exposure is a risk factor for Parkinson's disease.
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Affiliation(s)
- Kelsey Klinefelter
- Department of Biological Sciences, Northern Kentucky University, SC344 Nunn Drive, Highland Heights, KY, 41076, USA.,Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
| | - Molly Kromme Hooven
- Department of Biological Sciences, Northern Kentucky University, SC344 Nunn Drive, Highland Heights, KY, 41076, USA.,Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
| | - Chloe Bates
- Department of Biological Sciences, Northern Kentucky University, SC344 Nunn Drive, Highland Heights, KY, 41076, USA
| | - Breann T Colter
- Department of Biological Sciences, Northern Kentucky University, SC344 Nunn Drive, Highland Heights, KY, 41076, USA
| | - Alexandra Dailey
- Department of Biological Sciences, Northern Kentucky University, SC344 Nunn Drive, Highland Heights, KY, 41076, USA
| | - Smitha Krishnan Infante
- Department of Biological Sciences, Northern Kentucky University, SC344 Nunn Drive, Highland Heights, KY, 41076, USA
| | - Izabela Kania-Korwel
- Department of Occupational and Environmental Health, College of Public Health, University of Iowa, Iowa City, IA, 52242, USA
| | - Hans-Joachim Lehmler
- Department of Occupational and Environmental Health, College of Public Health, University of Iowa, Iowa City, IA, 52242, USA
| | - Alejandro López-Juárez
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
| | - Clare Pickering Ludwig
- Department of Biological Sciences, Northern Kentucky University, SC344 Nunn Drive, Highland Heights, KY, 41076, USA
| | - Christine Perdan Curran
- Department of Biological Sciences, Northern Kentucky University, SC344 Nunn Drive, Highland Heights, KY, 41076, USA.
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8
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Mtss1 promotes maturation and maintenance of cerebellar neurons via splice variant-specific effects. Brain Struct Funct 2017; 222:2787-2805. [DOI: 10.1007/s00429-017-1372-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Accepted: 01/17/2017] [Indexed: 11/26/2022]
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9
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Toia AR, Cuoco JA, Esposito AW, Ahsan J, Joshi A, Herron BJ, Torres G, Bolivar VJ, Ramos RL. Divergence and inheritance of neocortical heterotopia in inbred and genetically-engineered mice. Neurosci Lett 2016; 638:175-180. [PMID: 27993709 DOI: 10.1016/j.neulet.2016.12.038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 11/22/2016] [Accepted: 12/16/2016] [Indexed: 12/31/2022]
Abstract
Cortical function emerges from the intrinsic properties of neocortical neurons and their synaptic connections within and across lamina. Neurodevelopmental disorders affecting migration and lamination of the neocortex result in cognitive delay/disability and epilepsy. Molecular layer heterotopia (MLH), a dysplasia characterized by over-migration of neurons into layer I, are associated with cognitive deficits and neuronal hyperexcitability in humans and mice. The breadth of different inbred mouse strains that exhibit MLH and inheritance patterns of heterotopia remain unknown. A neuroanatomical survey of numerous different inbred mouse strains, 2 first filial generation (F1) hybrids, and one consomic strain (C57BL/6J-Chr 1A/J/NaJ) revealed MLH only in C57BL/6 mice and the consomic strain. Heterotopia were observed in numerous genetically-engineered mouse lines on a congenic C57BL/6 background. These data indicate that heterotopia formation is a weakly penetrant trait requiring homozygosity of one or more C57BL/6 alleles outside of chromosome 1. These data are relevant toward understanding neocortical development and disorders affecting neocortical lamination.
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Affiliation(s)
- Alyssa R Toia
- Department of Biomedical Sciences, New York Institute of Technology College of Osteopathic Medicine, Old Westbury, NY 11568, United States
| | - Joshua A Cuoco
- Department of Biomedical Sciences, New York Institute of Technology College of Osteopathic Medicine, Old Westbury, NY 11568, United States
| | - Anthony W Esposito
- Department of Biomedical Sciences, New York Institute of Technology College of Osteopathic Medicine, Old Westbury, NY 11568, United States
| | - Jawad Ahsan
- Department of Biomedical Sciences, New York Institute of Technology College of Osteopathic Medicine, Old Westbury, NY 11568, United States
| | - Alok Joshi
- Department of Biomedical Sciences, New York Institute of Technology College of Osteopathic Medicine, Old Westbury, NY 11568, United States
| | - Bruce J Herron
- Wadsworth Center, New York State Department of Health, Albany, NY, 12208, United States; Department of Biomedical Sciences, School of Public Health, State University of New York at Albany, Albany, NY, 12201, United States
| | - German Torres
- Department of Biomedical Sciences, New York Institute of Technology College of Osteopathic Medicine, Old Westbury, NY 11568, United States
| | - Valerie J Bolivar
- Wadsworth Center, New York State Department of Health, Albany, NY, 12208, United States; Department of Biomedical Sciences, School of Public Health, State University of New York at Albany, Albany, NY, 12201, United States
| | - Raddy L Ramos
- Department of Biomedical Sciences, New York Institute of Technology College of Osteopathic Medicine, Old Westbury, NY 11568, United States.
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