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Erickson AG, Motta A, Kastriti ME, Edwards S, Coulpier F, Théoulle E, Murtazina A, Poverennaya I, Wies D, Ganofsky J, Canu G, Lallemend F, Topilko P, Hadjab S, Fried K, Ruhrberg C, Schwarz Q, Castellani V, Bonanomi D, Adameyko I. Motor innervation directs the correct development of the mouse sympathetic nervous system. Nat Commun 2024; 15:7065. [PMID: 39152112 PMCID: PMC11329663 DOI: 10.1038/s41467-024-51290-0] [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: 06/09/2021] [Accepted: 08/02/2024] [Indexed: 08/19/2024] Open
Abstract
The sympathetic nervous system controls bodily functions including vascular tone, cardiac rhythm, and the "fight-or-flight response". Sympathetic chain ganglia develop in parallel with preganglionic motor nerves extending from the neural tube, raising the question of whether axon targeting contributes to sympathetic chain formation. Using nerve-selective genetic ablations and lineage tracing in mouse, we reveal that motor nerve-associated Schwann cell precursors (SCPs) contribute sympathetic neurons and satellite glia after the initial seeding of sympathetic ganglia by neural crest. Motor nerve ablation causes mispositioning of SCP-derived sympathoblasts as well as sympathetic chain hypoplasia and fragmentation. Sympathetic neurons in motor-ablated embryos project precociously and abnormally towards dorsal root ganglia, eventually resulting in fusion of sympathetic and sensory ganglia. Cell interaction analysis identifies semaphorins as potential motor nerve-derived signaling molecules regulating sympathoblast positioning and outgrowth. Overall, central innervation functions both as infrastructure and regulatory niche to ensure the integrity of peripheral ganglia morphogenesis.
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Affiliation(s)
- Alek G Erickson
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Alessia Motta
- Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milano, Italy
| | - Maria Eleni Kastriti
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
- Center for Brain Research, Department of Neuroimmunology, Medical University Vienna, Vienna, Austria
| | - Steven Edwards
- Department of Applied Physics, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Fanny Coulpier
- Mondor Institute for Biomedical Research (IMRB), INSERM, Créteil, France
| | - Emy Théoulle
- University of Claude Bernard Lyon 1, MeLiS, CNRS, INSERM, NeuroMyoGene Institute, Lyon, France
| | - Aliia Murtazina
- Department of Neuroscience, Biomedicum, Karolinska Institute, Stockholm, Sweden
| | - Irina Poverennaya
- Center for Brain Research, Department of Neuroimmunology, Medical University Vienna, Vienna, Austria
| | - Daniel Wies
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Jeremy Ganofsky
- University of Claude Bernard Lyon 1, MeLiS, CNRS, INSERM, NeuroMyoGene Institute, Lyon, France
| | - Giovanni Canu
- University College London, Department of Ophthalmology London, London, UK
| | - Francois Lallemend
- Department of Neuroscience, Biomedicum, Karolinska Institute, Stockholm, Sweden
| | - Piotr Topilko
- Mondor Institute for Biomedical Research (IMRB), INSERM, Créteil, France
| | - Saida Hadjab
- Department of Neuroscience, Biomedicum, Karolinska Institute, Stockholm, Sweden
| | - Kaj Fried
- Department of Neuroscience, Biomedicum, Karolinska Institute, Stockholm, Sweden
| | | | - Quenten Schwarz
- Center for Cancer Biology, University of South Australia, Adelaide, SA, Australia
| | - Valerie Castellani
- University of Claude Bernard Lyon 1, MeLiS, CNRS, INSERM, NeuroMyoGene Institute, Lyon, France
| | - Dario Bonanomi
- Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milano, Italy.
| | - Igor Adameyko
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden.
- Center for Brain Research, Department of Neuroimmunology, Medical University Vienna, Vienna, Austria.
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Pi HJ, Huang B, Yuan Q, Jing JJ. Neural regulation of mesenchymal stem cells in craniofacial bone: development, homeostasis and repair. Front Physiol 2024; 15:1423539. [PMID: 39135707 PMCID: PMC11318092 DOI: 10.3389/fphys.2024.1423539] [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: 04/26/2024] [Accepted: 07/15/2024] [Indexed: 08/15/2024] Open
Abstract
Mesenchymal stem cells endow various functions, including proliferation, multipotency, migration, etc. Craniofacial bones originate from the cranial neural crest and are developed mainly through intramembranous ossification, which are different from long bones. There are varied mesenchymal stem cells existing in the craniofacial bone, including Gli1 + cells, Axin2 + cells, Prx1 + cells, etc. Nerves distributed in craniofacial area are also derived from the neural crest, and the trigeminal nerve is the major sensory nerve in craniofacial area. The nerves and the skeleton are tightly linked spatially, and the skeleton is broadly innervated by sensory and sympathetic nerves, which also participate in bone development, homeostasis and healing process. In this review, we summarize mesenchymal stem cells located in craniofacial bone or, to be more specific, in jaws, temporomandibular joint and cranial sutures. Then we discuss the research advance concerning neural regulation of mesenchymal stem cells in craniofacial bone, mainly focused on development, homeostasis and repair. Discovery of neural regulation of mesenchymal stem cells may assist in treatment in the craniofacial bone diseases or injuries.
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Affiliation(s)
| | | | - Quan Yuan
- *Correspondence: Quan Yuan, ; Jun-Jun Jing,
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Pei F, Ma L, Guo T, Zhang M, Jing J, Wen Q, Feng J, Lei J, He J, Janečková E, Ho TV, Chen JF, Chai Y. Sensory nerve regulates progenitor cells via FGF-SHH axis in tooth root morphogenesis. Development 2024; 151:dev202043. [PMID: 38108472 PMCID: PMC10820866 DOI: 10.1242/dev.202043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 12/11/2023] [Indexed: 12/19/2023]
Abstract
Nerves play important roles in organ development and tissue homeostasis. Stem/progenitor cells differentiate into different cell lineages responsible for building the craniofacial organs. The mechanism by which nerves regulate stem/progenitor cell behavior in organ morphogenesis has not yet been comprehensively explored. Here, we use tooth root development in mouse as a model to investigate how sensory nerves regulate organogenesis. We show that sensory nerve fibers are enriched in the dental papilla at the initiation of tooth root development. Through single cell RNA-sequencing analysis of the trigeminal ganglion and developing molar, we reveal several signaling pathways that connect the sensory nerve with the developing molar, of which FGF signaling appears to be one of the important regulators. Fgfr2 is expressed in the progenitor cells during tooth root development. Loss of FGF signaling leads to shortened roots with compromised proliferation and differentiation of progenitor cells. Furthermore, Hh signaling is impaired in Gli1-CreER;Fgfr2fl/fl mice. Modulation of Hh signaling rescues the tooth root defects in these mice. Collectively, our findings elucidate the nerve-progenitor crosstalk and reveal the molecular mechanism of the FGF-SHH signaling cascade during tooth root morphogenesis.
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Affiliation(s)
- Fei Pei
- Center for Craniofacial Molecular Biology, University of Southern California, 2250 Alcazar Street, CSA 103, Los Angeles, CA 90033, USA
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - Li Ma
- Center for Craniofacial Molecular Biology, University of Southern California, 2250 Alcazar Street, CSA 103, Los Angeles, CA 90033, USA
| | - Tingwei Guo
- Center for Craniofacial Molecular Biology, University of Southern California, 2250 Alcazar Street, CSA 103, Los Angeles, CA 90033, USA
| | - Mingyi Zhang
- Center for Craniofacial Molecular Biology, University of Southern California, 2250 Alcazar Street, CSA 103, Los Angeles, CA 90033, USA
| | - Junjun Jing
- Center for Craniofacial Molecular Biology, University of Southern California, 2250 Alcazar Street, CSA 103, Los Angeles, CA 90033, USA
| | - Quan Wen
- Center for Craniofacial Molecular Biology, University of Southern California, 2250 Alcazar Street, CSA 103, Los Angeles, CA 90033, USA
| | - Jifan Feng
- Center for Craniofacial Molecular Biology, University of Southern California, 2250 Alcazar Street, CSA 103, Los Angeles, CA 90033, USA
| | - Jie Lei
- Center for Craniofacial Molecular Biology, University of Southern California, 2250 Alcazar Street, CSA 103, Los Angeles, CA 90033, USA
| | - Jinzhi He
- Center for Craniofacial Molecular Biology, University of Southern California, 2250 Alcazar Street, CSA 103, Los Angeles, CA 90033, USA
| | - Eva Janečková
- Center for Craniofacial Molecular Biology, University of Southern California, 2250 Alcazar Street, CSA 103, Los Angeles, CA 90033, USA
| | - Thach-Vu Ho
- Center for Craniofacial Molecular Biology, University of Southern California, 2250 Alcazar Street, CSA 103, Los Angeles, CA 90033, USA
| | - Jian-Fu Chen
- Center for Craniofacial Molecular Biology, University of Southern California, 2250 Alcazar Street, CSA 103, Los Angeles, CA 90033, USA
| | - Yang Chai
- Center for Craniofacial Molecular Biology, University of Southern California, 2250 Alcazar Street, CSA 103, Los Angeles, CA 90033, USA
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Li X, Xie R, Luo Y, Shi R, Ling Y, Zhao X, Xu X, Chu W, Wang X. Cooperation of TGF-β and FGF signalling pathways in skin development. Cell Prolif 2023; 56:e13489. [PMID: 37150846 PMCID: PMC10623945 DOI: 10.1111/cpr.13489] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/27/2023] [Accepted: 04/13/2023] [Indexed: 05/09/2023] Open
Abstract
The skin is a multi-layered structure composed of the epidermis, dermis and hypodermis. The epidermis originates entirely from the ectoderm, whereas the dermis originates from various germ layers depending on its anatomical location; thus, there are different developmental patterns of the skin. Although the regulatory mechanisms of epidermal formation are well understood, mechanisms regulating dermis development are not clear owing to the complex origin. It has been shown that several morphogenetic pathways regulate dermis development. Of these, transforming growth factor-β (TGF-β) and fibroblast growth factor (FGF) signalling pathways are the main modulators regulating skin cell induction, fate decision, migration and differentiation. Recently, the successful generation of human skin by modulating TGF-β and FGF signals further demonstrated the irreplaceable roles of these pathways in skin regeneration. This review provides evidence of the role of TGF-β and FGF signalling pathways in the development of different skin layers, especially the disparate dermis of different body regions. This review also provides new perspectives on the distinct developmental patterns of skin and explores new ideas for clinical applications in the future.
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Affiliation(s)
- Xinxin Li
- School of Pharmaceutical Sciences (Shenzhen)Sun Yat‐Sen UniversityShenzhenChina
| | - Rongfang Xie
- School of Pharmaceutical Sciences (Shenzhen)Sun Yat‐Sen UniversityShenzhenChina
| | - Yilin Luo
- School of Pharmaceutical Sciences (Shenzhen)Sun Yat‐Sen UniversityShenzhenChina
| | - Runlu Shi
- Institute of Biopharmaceutical and Health Engineering (iBHE), Shenzhen International Graduate SchoolTsinghua UniversityShenzhenChina
| | - Yuanqiang Ling
- Guangzhou Wishing Tree Hair Medical Technology Limited CompanyGuangzhouChina
| | - Xiaojing Zhao
- Guangzhou Wishing Tree Hair Medical Technology Limited CompanyGuangzhouChina
| | - Xuejuan Xu
- Department of EndocrinologyThe First People's Hospital of FoshanFoshanChina
| | - Weiwei Chu
- School of Pharmaceutical Sciences (Shenzhen)Sun Yat‐Sen UniversityShenzhenChina
| | - Xusheng Wang
- School of Pharmaceutical Sciences (Shenzhen)Sun Yat‐Sen UniversityShenzhenChina
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Chien CF, Sung JL, Wang CP, Yen CW, Yang YH. Analyzing Facial Asymmetry in Alzheimer's Dementia Using Image-Based Technology. Biomedicines 2023; 11:2802. [PMID: 37893175 PMCID: PMC10604711 DOI: 10.3390/biomedicines11102802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 10/12/2023] [Accepted: 10/13/2023] [Indexed: 10/29/2023] Open
Abstract
Several studies have demonstrated accelerated brain aging in Alzheimer's dementia (AD). Previous studies have also reported that facial asymmetry increases with age. Because obtaining facial images is much easier than obtaining brain images, the aim of this work was to investigate whether AD exhibits accelerated aging patterns in facial asymmetry. We developed new facial asymmetry measures to compare Alzheimer's patients with healthy controls. A three-dimensional camera was used to capture facial images, and 68 facial landmarks were identified using an open-source machine-learning algorithm called OpenFace. A standard image registration method was used to align the three-dimensional original and mirrored facial images. This study used the registration error, representing landmark superimposition asymmetry distances, to examine 29 pairs of landmarks to characterize facial asymmetry. After comparing the facial images of 150 patients with AD with those of 150 age- and sex-matched non-demented controls, we found that the asymmetry of 20 landmarks was significantly different in AD than in the controls (p < 0.05). The AD-linked asymmetry was concentrated in the face edge, eyebrows, eyes, nostrils, and mouth. Facial asymmetry evaluation may thus serve as a tool for the detection of AD.
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Affiliation(s)
- Ching-Fang Chien
- Department of Neurology, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80756, Taiwan
- Department of Neurology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80756, Taiwan
| | - Jia-Li Sung
- Department of Mechanical and Electromechanical Engineering, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
| | - Chung-Pang Wang
- Department of Mechanical and Electromechanical Engineering, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
| | - Chen-Wen Yen
- Department of Mechanical and Electromechanical Engineering, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
- Department of and Master’s Program in Neurology, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Neuroscience Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Yuan-Han Yang
- Department of Neurology, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80756, Taiwan
- Department of Neurology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80756, Taiwan
- Department of and Master’s Program in Neurology, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Neuroscience Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
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Agani Sabah G, Dinçer B. Association between sella turcica bridging and the impaction severity of palatally displaced canines: A retrospective study. Am J Orthod Dentofacial Orthop 2023; 164:567-574. [PMID: 37656073 DOI: 10.1016/j.ajodo.2023.03.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 03/01/2023] [Accepted: 03/01/2023] [Indexed: 09/02/2023]
Abstract
INTRODUCTION This retrospective study aimed to investigate the association between the extent of the bridging and dimensions of sella turcica and the impaction severity of palatally displaced canines. Secondarily, any possible association between skeletal age and gender was evaluated. METHODS Panoramic and cephalometric radiographs of 94 patients (63 female, 31 male; 19 pre-peak, 75 post-peak) with palatally displaced canines were evaluated. Sector classification and α angle were used to determine the impaction severity of palatally displaced canines on panoramic radiographs. The distance from the cusp tip of the palatally displaced canines to the occlusal plane (d) and the extent of the bridging and dimensions of the sella turcica were evaluated on cephalometric radiographs. RESULTS Sella turcica bridging and dimensions did not vary regarding the impaction severity of palatally displaced canines, but a significant association was found between sella turcica bridging and skeletal age (P = 0.038). Class II (33.3%) and Class III (12.0%) bridging was higher in postpubertal patients. No differences between females and males were detected for the extent of bridging and dimensions of the sella turcica. CONCLUSIONS These findings indicate no association between sella turcica bridging and dimensions and the impaction severity of palatally displaced canines. Sella turcica bridging is more frequent in the postpubertal period, whereas gender does not influence sella turcica bridging. More studies are needed to evaluate if the extent of sella turcica bridging may be indicative of severely impacted palatal canines, which in turn would allow for careful monitoring of patients from an early age and for the clinician to take preventive measures.
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Affiliation(s)
- Genta Agani Sabah
- Department of Orthodontics, Faculty of Dentistry, Izmir Tinaztepe University, Izmir, Turkey; Department of Oral and Dental Health, Vocational School of Health Services, Izmir Tinaztepe University, Izmir, Turkey.
| | - Banu Dinçer
- Department of Orthodontics, Faculty of Dentistry, Ege University, Izmir, Turkey
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Jones E, McLaughlin KA. A Novel Perspective on Neuronal Control of Anatomical Patterning, Remodeling, and Maintenance. Int J Mol Sci 2023; 24:13358. [PMID: 37686164 PMCID: PMC10488252 DOI: 10.3390/ijms241713358] [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: 07/20/2023] [Revised: 08/14/2023] [Accepted: 08/24/2023] [Indexed: 09/10/2023] Open
Abstract
While the nervous system may be best known as the sensory communication center of an organism, recent research has revealed a myriad of multifaceted roles for both the CNS and PNS from early development to adult regeneration and remodeling. These systems work to orchestrate tissue pattern formation during embryonic development and continue shaping pattering through transitional periods such as metamorphosis and growth. During periods of injury or wounding, the nervous system has also been shown to influence remodeling and wound healing. The neuronal mechanisms responsible for these events are largely conserved across species, suggesting this evidence may be important in understanding and resolving many human defects and diseases. By unraveling these diverse roles, this paper highlights the necessity of broadening our perspective on the nervous system beyond its conventional functions. A comprehensive understanding of the complex interactions and contributions of the nervous system throughout development and adulthood has the potential to revolutionize therapeutic strategies and open new avenues for regenerative medicine and tissue engineering. This review highlights an important role for the nervous system during the patterning and maintenance of complex tissues and provides a potential avenue for advancing biomedical applications.
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Affiliation(s)
| | - Kelly A. McLaughlin
- Department of Biology, Tufts University, 200 Boston Avenue, Suite 4700, Medford, MA 02155, USA;
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Kotowski M. The Differential Diagnosis of Congenital Developmental Midline Nasal Masses: Histopathological, Clinical, and Radiological Aspects. Diagnostics (Basel) 2023; 13:2796. [PMID: 37685334 PMCID: PMC10486988 DOI: 10.3390/diagnostics13172796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 08/24/2023] [Accepted: 08/26/2023] [Indexed: 09/10/2023] Open
Abstract
Developmental midline nasal masses including nasal dermoids (NDs), encephaloceles (EPHCs), and nasal glial heterotopias (NGHs) are a consequence of disrupted embryonal developmental processes in the frontonasal region. Surgery is the only method of treatment in order to prevent local and intracranial inflammatory complications as well as distant deformities of the facial skeleton. Due to their rarity, similar location, and clinical and radiological symptoms, meticulous preoperative differential diagnostics is mandatory. The aim of this thorough literature review was to present and discuss all clinical, histopathological, and radiological aspects of NDs, NGHs, and EPHCs that are crucial for their differential diagnosis.
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Affiliation(s)
- Michal Kotowski
- Department of Pediatric Otolaryngology, Poznan University of Medical Sciences, 60-572 Poznań, Poland
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9
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Qing G, Jia F, Liu J, Jiang X. Anatomical network modules of the human central nervous-craniofacial skeleton system. Front Neurol 2023; 14:1164283. [PMID: 37602256 PMCID: PMC10433180 DOI: 10.3389/fneur.2023.1164283] [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: 02/21/2023] [Accepted: 07/14/2023] [Indexed: 08/22/2023] Open
Abstract
Anatomical network analysis (AnNA) is a systems biological framework based on network theory that enables anatomical structural analysis by incorporating modularity to model structural complexity. The human brain and facial structures exhibit close structural and functional relationships, suggestive of a co-evolved anatomical network. The present study aimed to analyze the human head as a modular entity that comprises the central nervous system, including the brain, spinal cord, and craniofacial skeleton. An AnNA model was built using 39 anatomical nodes from the brain, spinal cord, and craniofacial skeleton. The linkages were identified using peripheral nerve supply and direct contact between structures. The Spinglass algorithm in the igraph software was applied to construct a network and identify the modules of the central nervous system-craniofacial skeleton anatomical network. Two modules were identified. These comprised an anterior module, which included the forebrain, anterior cranial base, and upper-middle face, and a posterior module, which included the midbrain, hindbrain, mandible, and posterior cranium. These findings may reflect the genetic and signaling networks that drive the mosaic central nervous system and craniofacial development and offer important systems biology perspectives for developmental disorders of craniofacial structures.
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Affiliation(s)
- Gele Qing
- Affiliated Hospital of Chifeng University, Chifeng, China
| | - Fucang Jia
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Jianwei Liu
- Affiliated Hospital of Chifeng University, Chifeng, China
| | - Xiling Jiang
- Affiliated Hospital of Chifeng University, Chifeng, China
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Gerasco JE, Hathaway‐Schrader JD, Poulides NA, Carson MD, Okhura N, Westwater C, Hatch NE, Novince CM. Commensal Microbiota Effects on Craniofacial Skeletal Growth and Morphology. JBMR Plus 2023; 7:e10775. [PMID: 37614301 PMCID: PMC10443078 DOI: 10.1002/jbm4.10775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 05/07/2023] [Accepted: 05/11/2023] [Indexed: 08/25/2023] Open
Abstract
Microbes colonize anatomical sites in health to form commensal microbial communities (e.g., commensal gut microbiota, commensal skin microbiota, commensal oral microbiota). Commensal microbiota has indirect effects on host growth and maturation through interactions with the host immune system. The commensal microbiota was recently introduced as a novel regulator of skeletal growth and morphology at noncraniofacial sites. Further, we and others have shown that commensal gut microbes, such as segmented filamentous bacteria (SFB), contribute to noncraniofacial skeletal growth and maturation. However, commensal microbiota effects on craniofacial skeletal growth and morphology are unclear. To determine the commensal microbiota's role in craniofacial skeletal growth and morphology, we performed craniometric and bone mineral density analyses on skulls from 9-week-old female C57BL/6T germ-free (GF) mice (no microbes), excluded-flora (EF) specific-pathogen-free mice (commensal microbiota), and murine-pathogen-free (MPF) specific-pathogen-free mice (commensal microbiota with SFB). Investigations comparing EF and GF mice revealed that commensal microbiota impacted the size and shape of the craniofacial skeleton. EF versus GF mice exhibited an elongated gross skull length. Cranial bone length analyses normalized to skull length showed that EF versus GF mice had enhanced frontal bone length and reduced cranial base length. The shortened cranial base in EF mice was attributed to decreased presphenoid, basisphenoid, and basioccipital bone lengths. Investigations comparing MPF mice and EF mice demonstrated that commensal gut microbes played a role in craniofacial skeletal morphology. Cranial bone length analyses normalized to skull length showed that MPF versus EF mice had reduced frontal bone length and increased cranial base length. The elongated cranial base in MPF mice was due to enhanced presphenoid bone length. This work, which introduces the commensal microbiota as a contributor to craniofacial skeletal growth, underscores that noninvasive interventions in the gut microbiome could potentially be employed to modify craniofacial skeletal morphology. © 2023 The Authors. JBMR Plus published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research.
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Affiliation(s)
- Joy E. Gerasco
- Department of Oral Health Sciences, College of Dental MedicineMedical University of South CarolinaCharlestonSCUSA
- Department of Stomatology‐Division of Periodontics, College of Dental MedicineMedical University of South CarolinaCharlestonSCUSA
- Department of Pediatrics‐Division of Endocrinology, College of MedicineMedical University of South CarolinaCharlestonSCUSA
- Department of Orthodontics, Adam's School of DentistryUniversity of North CarolinaChapel HillNCUSA
| | - Jessica D. Hathaway‐Schrader
- Department of Oral Health Sciences, College of Dental MedicineMedical University of South CarolinaCharlestonSCUSA
- Department of Stomatology‐Division of Periodontics, College of Dental MedicineMedical University of South CarolinaCharlestonSCUSA
- Department of Pediatrics‐Division of Endocrinology, College of MedicineMedical University of South CarolinaCharlestonSCUSA
| | - Nicole A. Poulides
- Department of Oral Health Sciences, College of Dental MedicineMedical University of South CarolinaCharlestonSCUSA
- Department of Stomatology‐Division of Periodontics, College of Dental MedicineMedical University of South CarolinaCharlestonSCUSA
- Department of Pediatrics‐Division of Endocrinology, College of MedicineMedical University of South CarolinaCharlestonSCUSA
| | - Matthew D. Carson
- Department of Oral Health Sciences, College of Dental MedicineMedical University of South CarolinaCharlestonSCUSA
- Department of Stomatology‐Division of Periodontics, College of Dental MedicineMedical University of South CarolinaCharlestonSCUSA
- Department of Pediatrics‐Division of Endocrinology, College of MedicineMedical University of South CarolinaCharlestonSCUSA
| | - Naoto Okhura
- Department of Orthodontics and Pediatric Dentistry, School of DentistryUniversity of MichiganAnn ArborMIUSA
| | - Caroline Westwater
- Department of Oral Health Sciences, College of Dental MedicineMedical University of South CarolinaCharlestonSCUSA
- Department of Microbiology and Immunology, College of MedicineMedical University of South CarolinaCharlestonSCUSA
| | - Nan E. Hatch
- Department of Orthodontics and Pediatric Dentistry, School of DentistryUniversity of MichiganAnn ArborMIUSA
| | - Chad M. Novince
- Department of Oral Health Sciences, College of Dental MedicineMedical University of South CarolinaCharlestonSCUSA
- Department of Stomatology‐Division of Periodontics, College of Dental MedicineMedical University of South CarolinaCharlestonSCUSA
- Department of Pediatrics‐Division of Endocrinology, College of MedicineMedical University of South CarolinaCharlestonSCUSA
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Kaucka M. Cis-regulatory landscapes in the evolution and development of the mammalian skull. Philos Trans R Soc Lond B Biol Sci 2023; 378:20220079. [PMID: 37183897 PMCID: PMC10184250 DOI: 10.1098/rstb.2022.0079] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023] Open
Abstract
Extensive morphological variation found in mammals reflects the wide spectrum of their ecological adaptations. The highest morphological diversity is present in the craniofacial region, where geometry is mainly dictated by the bony skull. Mammalian craniofacial development represents complex multistep processes governed by numerous conserved genes that require precise spatio-temporal control. A central question in contemporary evolutionary biology is how a defined set of conserved genes can orchestrate formation of fundamentally different structures, and therefore how morphological variability arises. In principle, differential gene expression patterns during development are the source of morphological variation. With the emergence of multicellular organisms, precise regulation of gene expression in time and space is attributed to cis-regulatory elements. These elements contribute to higher-order chromatin structure and together with trans-acting factors control transcriptional landscapes that underlie intricate morphogenetic processes. Consequently, divergence in cis-regulation is believed to rewire existing gene regulatory networks and form the core of morphological evolution. This review outlines the fundamental principles of the genetic code and genomic regulation interplay during development. Recent work that deepened our comprehension of cis-regulatory element origin, divergence and function is presented here to illustrate the state-of-the-art research that uncovered the principles of morphological novelty. This article is part of the theme issue 'The mammalian skull: development, structure and function'.
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Affiliation(s)
- Marketa Kaucka
- Max Planck Institute for Evolutionary Biology, Plön 24306, Germany
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12
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Congenital midline upper lip sinuses with intracranial extension - A variant of nasal dermoid? An embryology-based concept. Int J Pediatr Otorhinolaryngol 2023; 164:111394. [PMID: 36459726 DOI: 10.1016/j.ijporl.2022.111394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 10/30/2022] [Accepted: 11/16/2022] [Indexed: 11/21/2022]
Abstract
OBJECTIVE The study aimed to present the comparative analysis of midline congenital upper lip sinuses (MCULS) and nasal dermoids (NDs). The clinical similarity of congenital midline pathologies of the midface was interesting subject for further studies. Therefore, histopathological, and embryological background were also analyzed to verify a hypothesis that NDs and MCULSs are the different variants of the same entity. MATERIAL AND METHODS The study group included 27 surgically treated pediatric cases with the congenital midline sinus of the nose (n = 25) or upper lip (n = 2). Seven children presented intraoperatively confirmed intracranial extension of the abnormality, 6 in NDs group and 1 in MCULS group. Apart from clinical characteristics also histopathological results were compared in both groups. An analysis of the literature concerning the proposed theories of origin of NDs as well as the current classification systems of MCULSs and NDs were conducted. RESULTS The analysis revealed that MCULSs present the same clinical characteristics as NDs. No differences were noticed in the histopathological results. The embryological theories presented so far are insufficient to convincingly explain the precise process of origin of abnormalities such as ND and MCULS. Nevertheless, the developmental embryological processes of the midface shed a new light on the common origin of NDs and MCULSs. The proposal of an update of the existing classification of midline congenital midface sinuses was presented. CONCLUSIONS The comparative analysis of clinical, histopathological, and embryological characteristics confirms that NDs and MCULSs are different forms of the same entity. Embryological implications result in the possibility of intracranial extension in each case of MCULS. Therefore, CT and MR imaging which provide irreplaceable information are recommended for all patients with MCULS. The updated classification of midline congenital midface sinuses should be taken into consideration.
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13
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Percival CJ, Devine J, Hassan CR, Vidal‐Garcia M, O'Connor‐Coates CJ, Zaffarini E, Roseman C, Katz D, Hallgrimsson B. The genetic basis of neurocranial size and shape across varied lab mouse populations. J Anat 2022; 241:211-229. [PMID: 35357006 PMCID: PMC9296060 DOI: 10.1111/joa.13657] [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: 07/07/2021] [Revised: 02/11/2022] [Accepted: 03/08/2022] [Indexed: 11/26/2022] Open
Abstract
Brain and skull tissues interact through molecular signalling and mechanical forces during head development, leading to a strong correlation between the neurocranium and the external brain surface. Therefore, when brain tissue is unavailable, neurocranial endocasts are often used to approximate brain size and shape. Evolutionary changes in brain morphology may have resulted in secondary changes to neurocranial morphology, but the developmental and genetic processes underlying this relationship are not well understood. Using automated phenotyping methods, we quantified the genetic basis of endocast variation across large genetically varied populations of laboratory mice in two ways: (1) to determine the contributions of various genetic factors to neurocranial form and (2) to help clarify whether a neurocranial variation is based on genetic variation that primarily impacts bone development or on genetic variation that primarily impacts brain development, leading to secondary changes in bone morphology. Our results indicate that endocast size is highly heritable and is primarily determined by additive genetic factors. In addition, a non-additive inbreeding effect led to founder strains with lower neurocranial size, but relatively large brains compared to skull size; suggesting stronger canalization of brain size and/or a general allometric effect. Within an outbred sample of mice, we identified a locus on mouse chromosome 1 that is significantly associated with variation in several positively correlated endocast size measures. Because the protein-coding genes at this locus have been previously associated with brain development and not with bone development, we propose that genetic variation at this locus leads primarily to variation in brain volume that secondarily leads to changes in neurocranial globularity. We identify a strain-specific missense mutation within Akt3 that is a strong causal candidate for this genetic effect. Whilst it is not appropriate to generalize our hypothesis for this single locus to all other loci that also contribute to the complex trait of neurocranial skull morphology, our results further reveal the genetic basis of neurocranial variation and highlight the importance of the mechanical influence of brain growth in determining skull morphology.
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Affiliation(s)
| | - Jay Devine
- Cell Biology and AnatomyUniversity of Calgary Cumming School of MedicineCalgaryCanada
| | | | - Marta Vidal‐Garcia
- Cell Biology and AnatomyUniversity of Calgary Cumming School of MedicineCalgaryCanada
| | | | - Eva Zaffarini
- Cell Biology and AnatomyUniversity of Calgary Cumming School of MedicineCalgaryCanada
| | - Charles Roseman
- Department of Evolution, Ecology, and BehaviorUniversity of IllinoisUrbanaIllinoisUSA
| | - David Katz
- Cell Biology and AnatomyUniversity of Calgary Cumming School of MedicineCalgaryCanada
| | - Benedikt Hallgrimsson
- Cell Biology and Anatomy, Alberta Children's Hospital Research Institute, Cumming School of MedicineUniversity of CalgaryCalgaryCanada
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14
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Bonfili N, Barbeito‐Andrés J, Bernal V, Hallgrímsson B, Gonzalez PN. Morphological correspondence between brain and endocranial surfaces in mice exposed to undernutrition during development. J Anat 2022; 241:1-12. [PMID: 35132617 PMCID: PMC9178380 DOI: 10.1111/joa.13639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 01/19/2022] [Accepted: 01/21/2022] [Indexed: 11/26/2022] Open
Abstract
The morphological changes of the brain and the skull are highly integrated as a result of shared developmental pathways and different types of interactions between them. Shared developmental trajectories between these two structures might be influenced by genetic and environmental factors. Although the effect of environmental factors on neural and craniofacial traits has been extensively studied, less is known about the specific impact of stressful conditions on the coordinated variation between these structures. Here, we test the effect of early nutrient restriction on morphological correspondence between the brain and the endocast. For this purpose, mice exposed to protein or calorie-protein restriction during gestation and lactation were compared with a control group in which dams were fed standard food ad libitum. High-resolution images were obtained after weaning to describe brain and endocranial morphology. By magnetic resonance imaging (MRI), brain volumes were obtained and endocasts were segmented from skull reconstructions derived from micro-computed tomography (microCT). Brain and endocranial volumes were compared to assess the correspondence in size. Shape changes were analyzed using a set of landmarks and semilandmarks on 3D surfaces. Results indicated that brain volume is relatively less affected by undernutrition during development than endocast volume. Shape covariation between the brain and the endocast was found to be quite singular for protein-restricted animals. Procrustes distances were larger between the brain and the endocast of the same specimens than between brains or endocasts of different animals, which means that the greatest similarity is by type of structure and suggests that the use of the endocast as a direct proxy of the brain at this intraspecific scale could have some limitations. In the same line, patterns of brain shape asymmetry were not directly estimated from endocranial surfaces. In sum, our findings indicate that morphological variation and association between the brain and the endocast is modulated by environmental factors and support the idea that head morphogenesis results from complex processes that are sensitive to the pervasive influence of nutrient intake.
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Affiliation(s)
- Noelia Bonfili
- Estudios en Neurociencias y Sistemas Complejos (CONICET ‐ Hospital El Cruce ‐ Universidad Nacional Arturo Jauretche)Buenos AiresArgentina
| | - Jimena Barbeito‐Andrés
- Estudios en Neurociencias y Sistemas Complejos (CONICET ‐ Hospital El Cruce ‐ Universidad Nacional Arturo Jauretche)Buenos AiresArgentina
| | - Valeria Bernal
- CONICET. División Antropología, Facultad de Ciencias Naturales y MuseoUniversidad Nacional de La PlataBuenos AiresArgentina
| | | | - Paula N. Gonzalez
- Estudios en Neurociencias y Sistemas Complejos (CONICET ‐ Hospital El Cruce ‐ Universidad Nacional Arturo Jauretche)Buenos AiresArgentina
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15
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Abstract
The primary cilium is a nonmotile microtubule-based organelle in most vertebrate cell types. The primary cilium plays a critical role in tissue development and homeostasis by sensing and transducing various signaling pathways. Ciliary proteins such as intraflagellar transport (IFT) proteins as well as ciliary motor proteins, kinesin and dynein, comprise a bidirectional intraflagellar transport system needed for cilia formation and function. Mutations in ciliary proteins that lead to loss or dysfunction of primary cilia cause ciliopathies such as Jeune syndrome and Ellis-van Creveld syndrome and cause abnormalities in tooth development. These diseases exhibit severe skeletal and craniofacial dysplasia, highlighting the significance of primary cilia in skeletal development. Cilia are necessary for the propagation of hedgehog, transforming growth factor β, platelet-derived growth factor, and fibroblast growth factor signaling during osteogenesis and chondrogenesis. Ablation of ciliary proteins such as IFT80 or IFT20 blocks cilia formation, which inhibits osteoblast differentiation, osteoblast polarity, and alignment and reduces bone formation. Similarly, cilia facilitate chondrocyte differentiation and production of a cartilage matrix. Cilia also play a key role in mechanosensing and are needed for increased bone formation in response to mechanical forces.
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Affiliation(s)
- Z. Chinipardaz
- Department of Basic and
Translational Sciences, University of Pennsylvania, School of Dental
Medicine, Philadelphia, PA, USA,Department of Periodontics,
School of Dental Medicine, University of Pennsylvania, Philadelphia, PA,
USA
| | - M. Liu
- Department of Periodontics,
School of Dental Medicine, University of Pennsylvania, Philadelphia, PA,
USA
| | - D.T. Graves
- Department of Periodontics,
School of Dental Medicine, University of Pennsylvania, Philadelphia, PA,
USA
| | - S. Yang
- Department of Basic and
Translational Sciences, University of Pennsylvania, School of Dental
Medicine, Philadelphia, PA, USA,Center for Innovation &
Precision Dentistry, School of Dental Medicine, School of Engineering and
Applied Sciences, University of Pennsylvania, Philadelphia, PA, USA,The Penn Center for
Musculoskeletal Disorders, School of Medicine, University of Pennsylvania,
Philadelphia, PA, USA,S. Yang, Department of Basic and
Translational Sciences, University of Pennsylvania, School of Dental
Medicine, 240 S 40th Street, Philadelphia, PA 19104-6243, USA.
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16
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Stüssel LG, Hollstein R, Laugsch M, Hochfeld LM, Welzenbach J, Schröder J, Thieme F, Ishorst N, Romero RO, Weinhold L, Hess T, Gehlen J, Mostowska A, Heilmann-Heimbach S, Mangold E, Rada-Iglesias A, Knapp M, Schaaf CP, Ludwig KU. MiRNA-149 as a Candidate for Facial Clefting and Neural Crest Cell Migration. J Dent Res 2021; 101:323-330. [PMID: 34528480 DOI: 10.1177/00220345211038203] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Nonsyndromic cleft lip with or without palate (nsCL/P) ranks among the most common human birth defects and has a multifactorial etiology. Human neural crest cells (hNCC) make a substantial contribution to the formation of facial bone and cartilage and are a key cell type in terms of nsCL/P etiology. Based on increasing evidence for the role of noncoding regulatory mechanisms in nsCL/P, we investigated the role of hNCC-expressed microRNAs (miRNA) in cleft development. First, we conducted a systematic analysis of miRNAs expressed in human-induced pluripotent stem cell-derived hNCC using Affymetrix microarrays on cell lines established from 4 unaffected donors. These analyses identified 152 candidate miRNAs. Based on the hypothesis that candidate miRNA loci harbor genetic variation associated with nsCL/P risk, the genomic locations of these candidates were cross-referenced with data from a previous genome-wide association study of nsCL/P. Associated variants were reanalyzed in independent nsCL/P study populations. Jointly, the results suggest that miR-149 is implicated in nsCL/P etiology. Second, functional follow-up included in vitro overexpression and inhibition of miR-149 in hNCC and subsequent analyses at the molecular and phenotypic level. Using 3'RNA-Seq, we identified 604 differentially expressed (DE) genes in hNCC overexpressing miR-149 compared with untreated cells. These included TLR4 and JUNB, which are established targets of miR-149, and NOG, BMP4, and PAX6, which are reported nsCL/P candidate genes. Pathway analyses revealed that DE genes were enriched in pathways including regulation of cartilage development and NCC differentiation. At the cellular level, distinct hNCC migration patterns were observed in response to miR-149 overexpression. Our data suggest that miR-149 is involved in the etiology of nsCL/P via its role in hNCC migration.
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Affiliation(s)
- L G Stüssel
- Institute of Human Genetics, University of Bonn, School of Medicine and University Hospital Bonn, Bonn, Germany
| | - R Hollstein
- Institute of Human Genetics, University of Bonn, School of Medicine and University Hospital Bonn, Bonn, Germany
| | - M Laugsch
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany.,Institute of Human Genetics, University of Heidelberg, Heidelberg, Germany.,Institute of Human Genetics, CMMC, University Hospital Cologne, Cologne, Germany
| | - L M Hochfeld
- Institute of Human Genetics, University of Bonn, School of Medicine and University Hospital Bonn, Bonn, Germany
| | - J Welzenbach
- Institute of Human Genetics, University of Bonn, School of Medicine and University Hospital Bonn, Bonn, Germany
| | - J Schröder
- Institute of Human Genetics, University of Bonn, School of Medicine and University Hospital Bonn, Bonn, Germany
| | - F Thieme
- Institute of Human Genetics, University of Bonn, School of Medicine and University Hospital Bonn, Bonn, Germany
| | - N Ishorst
- Institute of Human Genetics, University of Bonn, School of Medicine and University Hospital Bonn, Bonn, Germany
| | - R Olmos Romero
- Institute of Human Genetics, University of Heidelberg, Heidelberg, Germany.,Institute of Human Genetics, CMMC, University Hospital Cologne, Cologne, Germany
| | - L Weinhold
- Institute of Medical Biometry Informatics and Epidemiology, University of Bonn, Bonn, Germany
| | - T Hess
- Institute of Human Genetics, University of Bonn, School of Medicine and University Hospital Bonn, Bonn, Germany.,Center of Human Genetics, University Hospital of Marburg, Marburg, Germany
| | - J Gehlen
- Institute of Human Genetics, University of Bonn, School of Medicine and University Hospital Bonn, Bonn, Germany.,Center of Human Genetics, University Hospital of Marburg, Marburg, Germany
| | - A Mostowska
- Department of Biochemistry and Molecular Biology, Poznan University of Medical Sciences, Poznan, Poland
| | - S Heilmann-Heimbach
- Institute of Human Genetics, University of Bonn, School of Medicine and University Hospital Bonn, Bonn, Germany
| | - E Mangold
- Institute of Human Genetics, University of Bonn, School of Medicine and University Hospital Bonn, Bonn, Germany
| | - A Rada-Iglesias
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany.,Cologne Excellence Cluster for Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany.,Institute of Biomedicine and Biotechnology, University of Cantabria, Santander, Spain
| | - M Knapp
- Institute of Medical Biometry Informatics and Epidemiology, University of Bonn, Bonn, Germany
| | - C P Schaaf
- Institute of Human Genetics, University of Heidelberg, Heidelberg, Germany.,Institute of Human Genetics, CMMC, University Hospital Cologne, Cologne, Germany
| | - K U Ludwig
- Institute of Human Genetics, University of Bonn, School of Medicine and University Hospital Bonn, Bonn, Germany
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17
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Sánchez N, Juárez-Balarezo J, Olhaberry M, González-Oneto H, Muzard A, Mardonez MJ, Franco P, Barrera F, Gaete M. Depression and Antidepressants During Pregnancy: Craniofacial Defects Due to Stem/Progenitor Cell Deregulation Mediated by Serotonin. Front Cell Dev Biol 2021; 9:632766. [PMID: 34476233 PMCID: PMC8406697 DOI: 10.3389/fcell.2021.632766] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 07/13/2021] [Indexed: 12/15/2022] Open
Abstract
Depression is a common and debilitating mood disorder that increases in prevalence during pregnancy. Worldwide, 7 to 12% of pregnant women experience depression, in which the associated risk factors include socio-demographic, psychological, and socioeconomic variables. Maternal depression could have psychological, anatomical, and physiological consequences in the newborn. Depression has been related to a downregulation in serotonin levels in the brain. Accordingly, the most commonly prescribed pharmacotherapy is based on selective serotonin reuptake inhibitors (SSRIs), which increase local serotonin concentration. Even though the use of SSRIs has few adverse effects compared with other antidepressants, altering serotonin levels has been associated with the advent of anatomical and physiological changes in utero, leading to defects in craniofacial development, including craniosynostosis, cleft palate, and dental defects. Migration and proliferation of neural crest cells, which contribute to the formation of bone, cartilage, palate, teeth, and salivary glands in the craniofacial region, are regulated by serotonin. Specifically, craniofacial progenitor cells are affected by serotonin levels, producing a misbalance between their proliferation and differentiation. Thus, it is possible to hypothesize that craniofacial development will be affected by the changes in serotonin levels, happening during maternal depression or after the use of SSRIs, which cross the placental barrier, increasing the risk of craniofacial defects. In this review, we provide a synthesis of the current research on depression and the use of SSRI during pregnancy, and how this could be related to craniofacial defects using an interdisciplinary perspective integrating psychological, clinical, and developmental biology perspectives. We discuss the mechanisms by which serotonin could influence craniofacial development and stem/progenitor cells, proposing some transcription factors as mediators of serotonin signaling, and craniofacial stem/progenitor cell biology. We finally highlight the importance of non-pharmacological therapies for depression on fertile and pregnant women, and provide an individual analysis of the risk-benefit balance for the use of antidepressants during pregnancy.
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Affiliation(s)
- Natalia Sánchez
- Department of Anatomy, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Jesús Juárez-Balarezo
- Department of Anatomy, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Marcia Olhaberry
- Department of Psychology, Pontificia Universidad Católica de Chile, Santiago, Chile
- Millennium Institute for Research in Depression and Personality (MIDAP), Santiago, Chile
| | - Humberto González-Oneto
- School of Dentistry, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Antonia Muzard
- Department of Psychology, Pontificia Universidad Católica de Chile, Santiago, Chile
- Millennium Institute for Research in Depression and Personality (MIDAP), Santiago, Chile
| | - María Jesús Mardonez
- Department of Psychology, Pontificia Universidad Católica de Chile, Santiago, Chile
- Millennium Institute for Research in Depression and Personality (MIDAP), Santiago, Chile
| | - Pamela Franco
- Department of Psychology, Pontificia Universidad Católica de Chile, Santiago, Chile
- Millennium Institute for Research in Depression and Personality (MIDAP), Santiago, Chile
| | - Felipe Barrera
- School of Dentistry, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Marcia Gaete
- Department of Anatomy, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
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18
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Galler KM, Weber M, Korkmaz Y, Widbiller M, Feuerer M. Inflammatory Response Mechanisms of the Dentine-Pulp Complex and the Periapical Tissues. Int J Mol Sci 2021; 22:ijms22031480. [PMID: 33540711 PMCID: PMC7867227 DOI: 10.3390/ijms22031480] [Citation(s) in RCA: 134] [Impact Index Per Article: 44.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 01/25/2021] [Accepted: 01/28/2021] [Indexed: 02/08/2023] Open
Abstract
The macroscopic and microscopic anatomy of the oral cavity is complex and unique in the human body. Soft-tissue structures are in close interaction with mineralized bone, but also dentine, cementum and enamel of our teeth. These are exposed to intense mechanical and chemical stress as well as to dense microbiologic colonization. Teeth are susceptible to damage, most commonly to caries, where microorganisms from the oral cavity degrade the mineralized tissues of enamel and dentine and invade the soft connective tissue at the core, the dental pulp. However, the pulp is well-equipped to sense and fend off bacteria and their products and mounts various and intricate defense mechanisms. The front rank is formed by a layer of odontoblasts, which line the pulp chamber towards the dentine. These highly specialized cells not only form mineralized tissue but exert important functions as barrier cells. They recognize pathogens early in the process, secrete antibacterial compounds and neutralize bacterial toxins, initiate the immune response and alert other key players of the host defense. As bacteria get closer to the pulp, additional cell types of the pulp, including fibroblasts, stem and immune cells, but also vascular and neuronal networks, contribute with a variety of distinct defense mechanisms, and inflammatory response mechanisms are critical for tissue homeostasis. Still, without therapeutic intervention, a deep carious lesion may lead to tissue necrosis, which allows bacteria to populate the root canal system and invade the periradicular bone via the apical foramen at the root tip. The periodontal tissues and alveolar bone react to the insult with an inflammatory response, most commonly by the formation of an apical granuloma. Healing can occur after pathogen removal, which is achieved by disinfection and obturation of the pulp space by root canal treatment. This review highlights the various mechanisms of pathogen recognition and defense of dental pulp cells and periradicular tissues, explains the different cell types involved in the immune response and discusses the mechanisms of healing and repair, pointing out the close links between inflammation and regeneration as well as between inflammation and potential malignant transformation.
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Affiliation(s)
- Kerstin M. Galler
- Department of Conservative Dentistry and Periodontology, University Hospital Regensburg, 93093 Regensburg, Germany;
- Correspondence:
| | - Manuel Weber
- Department of Oral and Maxillofacial Surgery, Friedrich-Alexander University Erlangen-Nürnberg, 91054 Erlangen, Germany;
| | - Yüksel Korkmaz
- Department of Periodontology and Operative Dentistry, University of Mainz, 55131 Mainz, Germany;
| | - Matthias Widbiller
- Department of Conservative Dentistry and Periodontology, University Hospital Regensburg, 93093 Regensburg, Germany;
| | - Markus Feuerer
- Department for Immunology, University Hospital Regensburg, 93053 Regensburg, Germany;
- Regensburg Center for Interventional Immunology (RCI), University Hospital Regensburg, 93053 Regensburg, Germany
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19
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Weber M, Wehrhan F, Deschner J, Sander J, Ries J, Möst T, Bozec A, Gölz L, Kesting M, Lutz R. The Special Developmental Biology of Craniofacial Tissues Enables the Understanding of Oral and Maxillofacial Physiology and Diseases. Int J Mol Sci 2021; 22:ijms22031315. [PMID: 33525669 PMCID: PMC7866214 DOI: 10.3390/ijms22031315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 01/21/2021] [Accepted: 01/25/2021] [Indexed: 11/21/2022] Open
Abstract
Maxillofacial hard tissues have several differences compared to bones of other localizations of the human body. These could be due to the different embryological development of the jaw bones compared to the extracranial skeleton. In particular, the immigration of neuroectodermally differentiated cells of the cranial neural crest (CNC) plays an important role. These cells differ from the mesenchymal structures of the extracranial skeleton. In the ontogenesis of the jaw bones, the development via the intermediate stage of the pharyngeal arches is another special developmental feature. The aim of this review was to illustrate how the development of maxillofacial hard tissues occurs via the cranial neural crest and pharyngeal arches, and what significance this could have for relevant pathologies in maxillofacial surgery, dentistry and orthodontic therapy. The pathogenesis of various growth anomalies and certain syndromes will also be discussed.
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Affiliation(s)
- Manuel Weber
- Department of Oral and Maxillofacial Surgery, Friedrich-Alexander University Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (F.W.); (J.R.); (T.M.); (M.K.); (R.L.)
- Correspondence: ; Tel.: +49-9131-854-3749
| | - Falk Wehrhan
- Department of Oral and Maxillofacial Surgery, Friedrich-Alexander University Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (F.W.); (J.R.); (T.M.); (M.K.); (R.L.)
- Private Office for Maxillofacial Surgery, 91781 Weißenburg, Germany
| | - James Deschner
- Department of Periodontology and Operative Dentistry, University of Mainz, 55131 Mainz, Germany;
| | - Janina Sander
- Private Office for Oral Surgery, 96049 Bamberg, Germany;
| | - Jutta Ries
- Department of Oral and Maxillofacial Surgery, Friedrich-Alexander University Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (F.W.); (J.R.); (T.M.); (M.K.); (R.L.)
| | - Tobias Möst
- Department of Oral and Maxillofacial Surgery, Friedrich-Alexander University Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (F.W.); (J.R.); (T.M.); (M.K.); (R.L.)
| | - Aline Bozec
- Department of Rheumatology and Immunology, Friedrich-Alexander University Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany;
| | - Lina Gölz
- Department of Orthodontics, Friedrich-Alexander University Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany;
| | - Marco Kesting
- Department of Oral and Maxillofacial Surgery, Friedrich-Alexander University Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (F.W.); (J.R.); (T.M.); (M.K.); (R.L.)
| | - Rainer Lutz
- Department of Oral and Maxillofacial Surgery, Friedrich-Alexander University Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany; (F.W.); (J.R.); (T.M.); (M.K.); (R.L.)
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20
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Ko FC, Sumner DR. How faithfully does intramembranous bone regeneration recapitulate embryonic skeletal development? Dev Dyn 2020; 250:377-392. [PMID: 32813296 DOI: 10.1002/dvdy.240] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 07/19/2020] [Accepted: 08/13/2020] [Indexed: 02/06/2023] Open
Abstract
Postnatal intramembranous bone regeneration plays an important role during a wide variety of musculoskeletal regeneration processes such as fracture healing, joint replacement and dental implant surgery, distraction osteogenesis, stress fracture healing, and repair of skeletal defects caused by trauma or resection of tumors. The molecular basis of intramembranous bone regeneration has been interrogated using rodent models of most of these conditions. These studies reveal that signaling pathways such as Wnt, TGFβ/BMP, FGF, VEGF, and Notch are invoked, reminiscent of embryonic development of membranous bone. Discoveries of several skeletal stem cell/progenitor populations using mouse genetic models also reveal the potential sources of postnatal intramembranous bone regeneration. The purpose of this review is to compare the underlying molecular signals and progenitor cells that characterize embryonic development of membranous bone and postnatal intramembranous bone regeneration.
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Affiliation(s)
- Frank C Ko
- Department of Cell & Molecular Medicine, Rush University Medical Center, Chicago, Illinois, USA
| | - D Rick Sumner
- Department of Cell & Molecular Medicine, Rush University Medical Center, Chicago, Illinois, USA
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21
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Evolutionary trends of the conserved neurocranium shape in angel sharks (Squatiniformes, Elasmobranchii). Sci Rep 2020; 10:12582. [PMID: 32724124 PMCID: PMC7387474 DOI: 10.1038/s41598-020-69525-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 06/19/2020] [Indexed: 11/24/2022] Open
Abstract
Elasmobranchii (i.e., sharks, skates, and rays) forms one of the most diverse groups of marine predators. With a fossil record extending back into the Devonian, several modifications in their body plan illustrate their body shape diversity through time. The angel sharks, whose fossil record dates back to the Late Jurassic, some 160 Ma, have a dorsoventrally flattened body, similar to skates and rays. Fossil skeletons of this group show that the overall morphology was well established earlier in its history. By examining the skull shape of well-preserved fossil material compared to extant angel sharks using geometric morphometric methods, within a phylogenetic framework, we were able to determine the conservative skull shape among angel sharks with a high degree of integration. The morphospace occupation of extant angel sharks is rather restricted, with extensive overlap. Most of the differences in skull shape are related to their geographic distribution patterns. We found higher levels of disparity in extinct forms, but lower ones in extant species. Since angel sharks display a highly specialized prey capture behaviour, we suggest that the morphological integration and biogeographic processes are the main drivers of their diversity, which might limit their capacity to display higher disparities since their origin.
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22
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Pai VP, Adams DS. Preventing Ethanol-Induced Brain and Eye Morphology Defects Using Optogenetics. Bioelectricity 2019; 1:260-272. [PMID: 32685918 DOI: 10.1089/bioe.2019.0008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Background: Embryonic exposure to the teratogen ethanol leads to dysmorphias, including eye and brain morphology defects associated with fetal alcohol spectrum disorder (FASD). Exposure of Xenopus laevis embryos to ethanol leads to similar developmental defects, including brain and eye dysmorphism, confirming our work and the work of others showing Xenopus as a useful system for studies of the brain and eye birth defects associated with FASD. Several targets of ethanol action have been hypothesized, one being regulation of Kir2.1 potassium channel. Endogenous ion fluxes and membrane voltage variation (bioelectric signals) have been shown to be powerful regulators of embryonic cell behaviors that are required for correct brain and eye morphology. Disruptions to these voltage patterns lead to spatially correlated disruptions in gene expression patterns and corresponding morphology. Materials and Methods: Here, we use controlled membrane voltage modulation to determine when and where voltage modulation is sufficient to rescue ethanol-induced brain and eye defects in Xenopus embryos. Results: We found (1) that modulating membrane voltage using light activation of the channelrhodopsin-2 variant D156A rescues ethanol exposed embryos, resulting in normal brain and eye morphologies; (2) hyperpolarization is required for the full duration of ethanol exposure; (3) hyperpolarization of only superficial ectoderm is sufficient for this effect; and(4) the rescue effect acts at a distance. Conclusions: These results, particularly the last, raise the exciting possibility of using bioelectric modulation to treat ethanol-induced brain and eye birth defects, possibly with extant ion channel drugs already prescribed to pregnant women. This may prove to be a simple and cost-effective strategy for reducing the impact of FASD.
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Affiliation(s)
- Vaibhav P Pai
- Department of Biology, Tufts Center for Regenerative and Developmental Biology, Tufts University, Medford, Massachusetts
| | - Dany Spencer Adams
- Department of Biology, Tufts University, Medford, Massachusetts.,Ion Diagnostics LLC, Watertown, Massachusetts
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23
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Feigin CY, Newton AH, Pask AJ. Widespread cis-regulatory convergence between the extinct Tasmanian tiger and gray wolf. Genome Res 2019; 29:1648-1658. [PMID: 31533979 PMCID: PMC6771401 DOI: 10.1101/gr.244251.118] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 08/19/2019] [Indexed: 12/18/2022]
Abstract
The extinct marsupial Tasmanian tiger, or thylacine, and the eutherian gray wolf are among the most widely recognized examples of convergent evolution in mammals. Despite being distantly related, these large predators independently evolved extremely similar craniofacial morphologies, and evidence suggests that they filled similar ecological niches. Previous analyses revealed little evidence of adaptive convergence between their protein-coding genes. Thus, the genetic basis of their convergence is still unclear. Here, we identified candidate craniofacial cis-regulatory elements across vertebrates and compared their evolutionary rates in the thylacine and wolf, revealing abundant signatures of convergent positive selection. Craniofacial thylacine-wolf accelerated regions were enriched near genes involved in TGF beta (TGFB) and BMP signaling, both of which are key morphological signaling pathways with critical roles in establishing the identities and boundaries between craniofacial tissues. Similarly, enhancers of genes involved in craniofacial nerve development showed convergent selection and involvement in these pathways. Taken together, these results suggest that adaptation in cis-regulators of TGF beta and BMP signaling may provide a mechanism to explain the coevolution of developmentally and functionally integrated craniofacial structures in these species. We also found that despite major structural differences in marsupial and eutherian brains, accelerated regions in both species were common near genes with roles in brain development. Our findings support the hypothesis that, relative to protein-coding genes, positive selection on cis-regulatory elements is likely to be an essential driver of adaptive convergent evolution and may underpin thylacine-wolf phenotypic similarities.
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Affiliation(s)
- Charles Y Feigin
- School of BioSciences, The University of Melbourne, Parkville, Victoria 3010, Australia.,Department of Molecular Biology, Princeton University, Princeton, New Jersey 08544, USA
| | - Axel H Newton
- School of BioSciences, The University of Melbourne, Parkville, Victoria 3010, Australia.,Museums Victoria, Melbourne, Victoria 3053, Australia
| | - Andrew J Pask
- School of BioSciences, The University of Melbourne, Parkville, Victoria 3010, Australia.,Museums Victoria, Melbourne, Victoria 3053, Australia
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24
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Kim DH, Kim BY, Kim DH, Hur J, Baek CH. Rabbit palatum-derived mesenchymal progenitor cells tri-lineage differentiation on 2D substrates and 3D printed constructs. J Appl Biomater Funct Mater 2019; 17:2280800019834520. [PMID: 31291802 DOI: 10.1177/2280800019834520] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Hard palate, developed by embryo neural crest stem cells, is a tissue with strong regenerative abilities. It is considered an abundant source of progenitor cells, forming various mesenchymal tissues. Rabbits are more suitable models than murine animals for regenerative preclinical study of the head and neck, owing to their larger size. However, there are no reports of the existence or characteristics of neural crest stem cells in the hard palate of rabbits. In this study, we demonstrate for the first time the presence of nestin-, Sox2-, and p75-positive neural crest stem cells obtained from the hard palate of rabbits and the properties of these cells. Flow cytometry analysis revealed that CD29, CD44, and CD81 were positive; and CD11b, CD34, and CD90 were negative on the ex vivo expanded palatal progenitor cells. Finally, we differentiated them into cells of mesenchymal lineages (bone, cartilage, and fat) in vitro, and in three-dimensional fabricated polycaprolactone and polycaprolactone-tricalcium phosphate scaffolds. Taken together, our data showed the existence of rabbit palatum-derived mesenchymal progenitor cells, and successful fabrication of progenitor cell-loaded biodegradable scaffold using three-dimensional printing. This study will open avenues for new tissue engineering strategies for cell therapy using three-dimensional printing with scaffolds for reconstruction of head and neck defects.
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Affiliation(s)
- Dong Hwan Kim
- 1 Department of Orthopedic Surgery, Seoul National University Hospital, Seoul, Republic of Korea
| | - Bo Young Kim
- 2 Department of Otorhinolaryngology Head and Neck Surgery, Sanggye Paik Hospital, Seoul, Republic of Korea
| | - Dong Hyun Kim
- 3 Department of Pediatrics, Hematology and Oncology, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Jin Hur
- 4 Department of Convergence Medical Science, Pusan National University School of Medicine, Republic of Korea
| | - Chung-Hwan Baek
- 5 Department of Otorhinolaryngology-Head and Neck Surgery, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul, Republic of Korea
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25
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Rostampour N, Appelt CM, Abid A, Boughner JC. Expression of new genes in vertebrate tooth development and p63 signaling. Dev Dyn 2019; 248:744-755. [PMID: 30875130 DOI: 10.1002/dvdy.26] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 02/15/2019] [Accepted: 03/11/2019] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND p63 is an evolutionarily ancient transcription factor essential to vertebrate tooth development. Our recent gene expression screen comparing wild-type and "toothless" p63-/- mouse embryos implicated in tooth development several new genes that we hypothesized act downstream of p63 in dental epithelium, where p63 is also expressed. RESULTS Via in situ hybridization and immunohistochemistry, we probed mouse embryos (embryonic days 10.5-14.5) and spotted gar fish embryos (14 days postfertilization) for these newly linked genes, Cbln1, Cldn23, Fermt1, Krt15, Pltp and Prss8, which were expressed in mouse and gar dental epithelium. Loss of p63 altered expression levels but not domains. Expression was comparable between murine upper and lower tooth organs, implying conserved gene functions in maxillary and mandibular dentitions. Our meta-analysis of gene expression databases supported that these genes act within a p63-driven gene regulatory network important to tooth development in mammals and more evolutionary ancient vertebrates (fish, amphibians). CONCLUSIONS Cbln1, Cldn23, Fermt1, Krt15, Pltp, and Prss8 were expressed in mouse and fish dental epithelium at placode, bud, and/or cap stages. We theorize that these genes participate in cell-cell adhesion, cell polarity, and extracellular matrix signaling to support dental epithelium integrity, folding, and epithelial-mesenchymal cross talk during tooth development.
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Affiliation(s)
- Nasim Rostampour
- Department of Anatomy & Cell Biology, College of Medicine, University of Saskatchewan, Saskatoon, SK S7N 5E5, Canada
| | - Cassy M Appelt
- Department of Anatomy & Cell Biology, College of Medicine, University of Saskatchewan, Saskatoon, SK S7N 5E5, Canada
| | - Aunum Abid
- Department of Anatomy & Cell Biology, College of Medicine, University of Saskatchewan, Saskatoon, SK S7N 5E5, Canada
| | - Julia C Boughner
- Department of Anatomy & Cell Biology, College of Medicine, University of Saskatchewan, Saskatoon, SK S7N 5E5, Canada
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26
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Trejo JL. Cranial Nerves: Mind Your Head. Anat Rec (Hoboken) 2019; 302:374-377. [DOI: 10.1002/ar.24071] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 12/20/2018] [Accepted: 01/28/2019] [Indexed: 12/20/2022]
Affiliation(s)
- José Luis Trejo
- Department of Translational Neuroscience, CSIC; Cajal Institute; Madrid Spain
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27
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Quirós-Terrón L, Arráez-Aybar LA, Murillo-González J, De-la-Cuadra-Blanco C, Martínez-Álvarez MC, Sanz-Casado JV, Mérida-Velasco JR. Initial stages of development of the submandibular gland (human embryos at 5.5-8 weeks of development). J Anat 2019; 234:700-708. [PMID: 30740679 DOI: 10.1111/joa.12955] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/14/2019] [Indexed: 11/29/2022] Open
Abstract
The aim of this study was to determine the main stages of submandibular salivary gland development during the embryonic period in humans. In addition, we studied submandibular salivary gland development in rats on embryonic days 14-16 and expression in the submandibular salivary gland region with the monoclonal antibody HNK-1. Serial sections from 25 human embryos with a greatest length ranging from 10 to 31 mm (Carnegie stages 16-23; weeks 5.5-8 of development) and Wistar rats of embryonic days (E) 14-16 were analysed with light microscopy. Five stages of submandibular salivary gland development were identified. The prospective stage (1), between weeks 5.5 and early week 6, is characterized by a thickening of the epithelium of the medial paralingual groove in the floor of the mouth corresponding to the primordium of the submandibular salivary gland parenchyma. At this stage, the primordium of the parasympathetic ganglion lies below the lingual nerve. The primordium of the submandibular salivary gland parenchyma is observed in rats on E14 in the medial paralingual groove with mesenchymal cells, underlying the lingual nerve. These cells are HNK-1-positive, corresponding to the primordium of the parasympathetic ganglion. The bud stage (2), at the end of week 6 in humans and on E15 in rats, is characterized by the proliferation and invagination of the epithelial condensation, surrounded by an important condensation of the mesenchyme. The pseudoglandular stage (3) at week 6.5 is characterized by the beginning of the formation of lobes in the condensed mesenchyme. The canalicular stage (4), between week 7 and 7.5, is characterized by the appearance of a lumen in the proximal part of the submandibular duct. The innervation stage (5) occurs during week 8, with the innervation of the submandibular and interlobular ducts. Nervous branches arriving from the parasympathetic ganglion innervate the glandular parenchyma. Numerous blood vessels are observed nearby. Our results suggest that submandibular salivary gland development requires interactions among epithelium, mesenchyme, parasympathetic ganglion and blood vessels.
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Affiliation(s)
- Luis Quirós-Terrón
- Faculty of Medicine, Department of Anatomy and Embryology, Complutense University of Madrid, Madrid, Spain
| | - Luis-Alfonso Arráez-Aybar
- Faculty of Medicine, Department of Anatomy and Embryology, Complutense University of Madrid, Madrid, Spain
| | - Jorge Murillo-González
- Faculty of Medicine, Department of Anatomy and Embryology, Complutense University of Madrid, Madrid, Spain
| | | | | | - José-Vicente Sanz-Casado
- Faculty of Medicine, Department of Anatomy and Embryology, Complutense University of Madrid, Madrid, Spain
| | - José-Ramón Mérida-Velasco
- Faculty of Medicine, Department of Anatomy and Embryology, Complutense University of Madrid, Madrid, Spain
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28
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Lesciotto KM, Richtsmeier JT. Craniofacial skeletal response to encephalization: How do we know what we think we know? AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2019; 168 Suppl 67:27-46. [PMID: 30680710 PMCID: PMC6424107 DOI: 10.1002/ajpa.23766] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 11/16/2018] [Accepted: 11/21/2018] [Indexed: 12/17/2022]
Abstract
Dramatic changes in cranial capacity have characterized human evolution. Important evolutionary hypotheses, such as the spatial packing hypothesis, assert that increases in relative brain size (encephalization) have caused alterations to the modern human skull, resulting in a suite of traits unique among extant primates, including a domed cranial vault, highly flexed cranial base, and retracted facial skeleton. Most prior studies have used fossil or comparative primate data to establish correlations between brain size and cranial form, but the mechanistic basis for how changes in brain size impact the overall shape of the skull resulting in these cranial traits remains obscure and has only rarely been investigated critically. We argue that understanding how changes in human skull morphology could have resulted from increased encephalization requires the direct testing of hypotheses relating to interaction of embryonic development of the bones of the skull and the brain. Fossil and comparative primate data have thoroughly described the patterns of association between brain size and skull morphology. Here we suggest complementing such existing datasets with experiments focused on mechanisms responsible for producing the observed patterns to more thoroughly understand the role of encephalization in shaping the modern human skull.
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Affiliation(s)
- Kate M Lesciotto
- Department of Anthropology, Pennsylvania State University, University Park, Pennsylvania
| | - Joan T Richtsmeier
- Department of Anthropology, Pennsylvania State University, University Park, Pennsylvania
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29
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Yang LM, Ornitz DM. Sculpting the skull through neurosensory epithelial-mesenchymal signaling. Dev Dyn 2018; 248:88-97. [PMID: 30117627 DOI: 10.1002/dvdy.24664] [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: 07/11/2018] [Revised: 08/09/2018] [Accepted: 08/10/2018] [Indexed: 12/16/2022] Open
Abstract
The vertebrate skull is a complex structure housing the brain and specialized sensory organs, including the eye, the inner ear, and the olfactory system. The close association between bones of the skull and the sensory organs they encase has posed interesting developmental questions about how the tissues scale with one another. Mechanisms that regulate morphogenesis of the skull are hypothesized to originate in part from the encased neurosensory organs. Conversely, the developing skull is hypothesized to regulate the growth of neurosensory organs, through mechanical forces or molecular signaling. Here, we review studies of epithelial-mesenchymal interactions during inner ear and olfactory system development that may coordinate the growth of the two sensory organs with their surrounding bone. We highlight recent progress in the field and provide evidence that mechanical forces arising from bone growth may affect olfactory epithelium development. Developmental Dynamics 248:88-97, 2019. © 2018 Wiley Periodicals, Inc.
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Affiliation(s)
- Lu M Yang
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, Missouri
| | - David M Ornitz
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, Missouri
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30
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Tesařová M, Mancini L, Simon A, Adameyko I, Kaucká M, Elewa A, Lanzafame G, Zhang Y, Kalasová D, Szarowská B, Zikmund T, Novotná M, Kaiser J. A quantitative analysis of 3D-cell distribution in regenerating muscle-skeletal system with synchrotron X-ray computed microtomography. Sci Rep 2018; 8:14145. [PMID: 30237460 PMCID: PMC6148031 DOI: 10.1038/s41598-018-32459-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 09/10/2018] [Indexed: 02/07/2023] Open
Abstract
One of the greatest enigmas of modern biology is how the geometry of muscular and skeletal structures are created and how their development is controlled during growth and regeneration. Scaling and shaping of vertebrate muscles and skeletal elements has always been enigmatic and required an advanced technical level in order to analyse the cell distribution in 3D. In this work, synchrotron X-ray computed microtomography (µCT) and chemical contrasting has been exploited for a quantitative analysis of the 3D-cell distribution in tissues of a developing salamander (Pleurodeles waltl) limb – a key model organism for vertebrate regeneration studies. We mapped the limb muscles, their size and shape as well as the number and density of cells within the extracellular matrix of the developing cartilage. By using tomographic approach, we explored the polarity of the cells in 3D, in relation to the structure of developing joints. We found that the polarity of chondrocytes correlates with the planes in joint surfaces and also changes along the length of the cartilaginous elements. Our approach generates data for the precise computer simulations of muscle-skeletal regeneration using cell dynamics models, which is necessary for the understanding how anisotropic growth results in the precise shapes of skeletal structures.
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Affiliation(s)
- Markéta Tesařová
- Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - Lucia Mancini
- Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Trieste, Italy
| | - Andras Simon
- Department of Cellular and Molecular Biology, Karolinska Institutet, Solna, 171777, Stockholm, Sweden
| | - Igor Adameyko
- Department of Physiology and Pharmacology, Karolinska Institutet, Solna, 171777, Stockholm, Sweden.,Department of Molecular Neurosciences, Medical University Vienna, Vienna, Austria
| | - Markéta Kaucká
- Department of Physiology and Pharmacology, Karolinska Institutet, Solna, 171777, Stockholm, Sweden.,Department of Molecular Neurosciences, Medical University Vienna, Vienna, Austria
| | - Ahmed Elewa
- Department of Cellular and Molecular Biology, Karolinska Institutet, Solna, 171777, Stockholm, Sweden
| | | | - Yi Zhang
- Department of Physiology and Pharmacology, Karolinska Institutet, Solna, 171777, Stockholm, Sweden.,Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Dominika Kalasová
- Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - Bára Szarowská
- Department of Physiology and Pharmacology, Karolinska Institutet, Solna, 171777, Stockholm, Sweden
| | - Tomáš Zikmund
- Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - Marie Novotná
- Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - Jozef Kaiser
- Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic.
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31
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Yang LM, Huh SH, Ornitz DM. FGF20-Expressing, Wnt-Responsive Olfactory Epithelial Progenitors Regulate Underlying Turbinate Growth to Optimize Surface Area. Dev Cell 2018; 46:564-580.e5. [PMID: 30100263 DOI: 10.1016/j.devcel.2018.07.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 05/09/2018] [Accepted: 07/11/2018] [Indexed: 01/06/2023]
Abstract
The olfactory epithelium (OE) is a neurosensory organ required for the sense of smell. Turbinates, bony projections from the nasal cavity wall, increase the surface area within the nasal cavity lined by the OE. Here, we use engineered fibroblast growth factor 20 (Fgf20) knockin alleles to identify a population of OE progenitor cells that expand horizontally during development to populate all lineages of the mature OE. We show that these Fgf20-positive epithelium-spanning progenitor (FEP) cells are responsive to Wnt/β-Catenin signaling. Wnt signaling suppresses FEP cell differentiation into OE basal progenitors and their progeny and positively regulates Fgf20 expression. We further show that FGF20 signals to the underlying mesenchyme to regulate the growth of turbinates. These studies thus identify a population of OE progenitor cells that function to scale OE surface area with the underlying turbinates.
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Affiliation(s)
- Lu M Yang
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Sung-Ho Huh
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - David M Ornitz
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110, USA.
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32
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Maldonado E, López Y, Herrera M, Martínez-Sanz E, Martínez-Álvarez C, Pérez-Miguelsanz J. Craniofacial structure alterations of foetuses from folic acid deficient pregnant mice. Ann Anat 2018; 218:59-68. [DOI: 10.1016/j.aanat.2018.02.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 01/17/2018] [Accepted: 02/06/2018] [Indexed: 12/18/2022]
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33
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Hooper JE, Feng W, Li H, Leach SM, Phang T, Siska C, Jones KL, Spritz RA, Hunter LE, Williams T. Systems biology of facial development: contributions of ectoderm and mesenchyme. Dev Biol 2017; 426:97-114. [PMID: 28363736 PMCID: PMC5530582 DOI: 10.1016/j.ydbio.2017.03.025] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 03/23/2017] [Accepted: 03/23/2017] [Indexed: 12/17/2022]
Abstract
The rapid increase in gene-centric biological knowledge coupled with analytic approaches for genomewide data integration provides an opportunity to develop systems-level understanding of facial development. Experimental analyses have demonstrated the importance of signaling between the surface ectoderm and the underlying mesenchyme are coordinating facial patterning. However, current transcriptome data from the developing vertebrate face is dominated by the mesenchymal component, and the contributions of the ectoderm are not easily identified. We have generated transcriptome datasets from critical periods of mouse face formation that enable gene expression to be analyzed with respect to time, prominence, and tissue layer. Notably, by separating the ectoderm and mesenchyme we considerably improved the sensitivity compared to data obtained from whole prominences, with more genes detected over a wider dynamic range. From these data we generated a detailed description of ectoderm-specific developmental programs, including pan-ectodermal programs, prominence- specific programs and their temporal dynamics. The genes and pathways represented in these programs provide mechanistic insights into several aspects of ectodermal development. We also used these data to identify co-expression modules specific to facial development. We then used 14 co-expression modules enriched for genes involved in orofacial clefts to make specific mechanistic predictions about genes involved in tongue specification, in nasal process patterning and in jaw development. Our multidimensional gene expression dataset is a unique resource for systems analysis of the developing face; our co-expression modules are a resource for predicting functions of poorly annotated genes, or for predicting roles for genes that have yet to be studied in the context of facial development; and our analytic approaches provide a paradigm for analysis of other complex developmental programs.
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Affiliation(s)
- Joan E Hooper
- Department of Cell and Developmental Biology, University of Colorado School of Medicine, 12801 E 17th Avenue, Aurora, CO 80045, USA; Computational Bioscience Program, University of Colorado School of Medicine, 12801 E 17th Avenue, Aurora, CO 80045, USA.
| | - Weiguo Feng
- Department of Cell and Developmental Biology, University of Colorado School of Medicine, 12801 E 17th Avenue, Aurora, CO 80045, USA; Department of Craniofacial Biology, University of Colorado School of Dental Medicine, 12801 E 17th Avenue, Aurora, CO 80045, USA.
| | - Hong Li
- Department of Craniofacial Biology, University of Colorado School of Dental Medicine, 12801 E 17th Avenue, Aurora, CO 80045, USA.
| | - Sonia M Leach
- Department of Biomedical Research, National Jewish Health, 1400 Jackson Street, Denver, CO 80206, USA.
| | - Tzulip Phang
- Computational Bioscience Program, University of Colorado School of Medicine, 12801 E 17th Avenue, Aurora, CO 80045, USA; Department of Medicine, University of Colorado School of Medicine, 12801 E 17th Avenue, Aurora, CO 80045, USA.
| | - Charlotte Siska
- Computational Bioscience Program, University of Colorado School of Medicine, 12801 E 17th Avenue, Aurora, CO 80045, USA.
| | - Kenneth L Jones
- Department of Pediatrics, University of Colorado School of Medicine, 12801 E 17th Avenue, Aurora, CO 80045, USA.
| | - Richard A Spritz
- Human Medical Genetics and Genomics Program, University of Colorado School of Medicine, 12800 E 17th Avenue, Aurora, CO 80045, USA.
| | - Lawrence E Hunter
- Computational Bioscience Program, University of Colorado School of Medicine, 12801 E 17th Avenue, Aurora, CO 80045, USA; Department of Pharmacology, University of Colorado School of Medicine, 12801 E 17th Avenue, Aurora, CO 80045, USA.
| | - Trevor Williams
- Department of Cell and Developmental Biology, University of Colorado School of Medicine, 12801 E 17th Avenue, Aurora, CO 80045, USA; Department of Craniofacial Biology, University of Colorado School of Dental Medicine, 12801 E 17th Avenue, Aurora, CO 80045, USA.
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34
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Bosch TCG, Klimovich A, Domazet-Lošo T, Gründer S, Holstein TW, Jékely G, Miller DJ, Murillo-Rincon AP, Rentzsch F, Richards GS, Schröder K, Technau U, Yuste R. Back to the Basics: Cnidarians Start to Fire. Trends Neurosci 2016; 40:92-105. [PMID: 28041633 DOI: 10.1016/j.tins.2016.11.005] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Revised: 11/22/2016] [Accepted: 11/23/2016] [Indexed: 12/15/2022]
Abstract
The nervous systems of cnidarians, pre-bilaterian animals that diverged close to the base of the metazoan radiation, are structurally simple and thus have great potential to reveal fundamental principles of neural circuits. Unfortunately, cnidarians have thus far been relatively intractable to electrophysiological and genetic techniques and consequently have been largely passed over by neurobiologists. However, recent advances in molecular and imaging methods are fueling a renaissance of interest in and research into cnidarians nervous systems. Here, we review current knowledge on the nervous systems of cnidarian species and propose that researchers should seize this opportunity and undertake the study of members of this phylum as strategic experimental systems with great basic and translational relevance for neuroscience.
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Affiliation(s)
| | | | - Tomislav Domazet-Lošo
- Ruđer Bošković Institute, Zagreb, Croatia; Catholic University of Croatia, Zagreb, Croatia
| | - Stefan Gründer
- Institute of Physiology, RWTH Aachen University, Germany
| | | | - Gáspár Jékely
- Max Planck Institute for Developmental Biology, Tübingen, Germany
| | - David J Miller
- ARC Centre of Excellence for Coral Reef Studies, Townsville, Australia
| | | | - Fabian Rentzsch
- Sars International Centre for Marine Molecular Biology, University of Bergen, Norway
| | - Gemma S Richards
- Sars International Centre for Marine Molecular Biology, University of Bergen, Norway; University of Queensland, Brisbane, Australia
| | | | | | - Rafael Yuste
- Neurotechnology Center, Columbia University, New York, NY, USA.
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35
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Mandalos NP, Remboutsika E. Sox2: To crest or not to crest? Semin Cell Dev Biol 2016; 63:43-49. [PMID: 27592260 DOI: 10.1016/j.semcdb.2016.08.035] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 08/29/2016] [Accepted: 08/30/2016] [Indexed: 12/12/2022]
Abstract
Precise control of neural progenitor transformation into neural crest stem cells ensures proper craniofacial and head development. In the neural progenitor pool, SoxB factors play an essential role as cell fate determinants of neural development, whereas during neural crest stem cell formation, Sox2 plays a predominant role as a guardian of the developmental clock that ensures precision of cell flow in the developing head.
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Affiliation(s)
- Nikolaos Panagiotis Mandalos
- National University of Athens Medical School, Department of Pediatrics, 75 Mikras Asias Str., 115 27, Athens, Greece; Stem Cell Biology Laboratory, Biomedical Sciences Research Centre "Alexander Fleming", 34 Fleming Str., 16672 Vari-Attica, Greece; Adjunct Faculty, The Lieber Institute for Brain Development, Basic Sciences Division, Johns Hopkins Medical Campus, 855 North Wolfe Str., Suite 300, 3rd Floor, Baltimore, MD 21205, USA
| | - Eumorphia Remboutsika
- National University of Athens Medical School, Department of Pediatrics, 75 Mikras Asias Str., 115 27, Athens, Greece; Stem Cell Biology Laboratory, Biomedical Sciences Research Centre "Alexander Fleming", 34 Fleming Str., 16672 Vari-Attica, Greece; Adjunct Faculty, The Lieber Institute for Brain Development, Basic Sciences Division, Johns Hopkins Medical Campus, 855 North Wolfe Str., Suite 300, 3rd Floor, Baltimore, MD 21205, USA.
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