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Wei Z, Xu B, Yin Y, Chang J, Li Z, Zhang Y, Che X, Bi X. MiR-380 inhibits the proliferation and invasion of cholangiocarcinoma cells by silencing LIS1. Cancer Cell Int 2024; 24:129. [PMID: 38582841 PMCID: PMC10998336 DOI: 10.1186/s12935-024-03241-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 01/24/2024] [Indexed: 04/08/2024] Open
Abstract
BACKGROUND The objective of this study was to determine the role and regulatory mechanism of miR-380 in cholangiocarcinoma. METHODS The TargetScan database and a dual-luciferase reporter assay system were used to determine if LIS1 was a target gene of miR-380. The Cell Counting Kit 8 assay, flow cytometry, and Transwell assay were used to detect the effects of miR-380 and LIS1 on the proliferation, S-phase ratio, and invasiveness of HCCC-9810/HuCCT1/QBC939 cells. Western blotting was used to determine the effect of miR-380 on MMP-2/p-AKT. Immunohistochemistry detected the regulatory effect of miR-380 on the expression of MMP-2/p-AKT/LIS1. RESULTS Expression of miR-380 in cholangiocarcinoma was decreased but expression of LIS1 was increased. LIS1 was confirmed to be a target gene of miR-380. Transfection with miR-380 mimics inhibited the proliferation, S-phase arrest, and invasion of HCCC-9810/HuCCT1/QBC939 cells, and LIS1 reversed these inhibitory effects. miR-380 inhibitor promoted proliferation, S-phase ratio, and invasiveness of HCCC-9810/HuCCT1/QBC939 cells. si-LIS1 salvaged the promotive effect of miR-380 inhibitor. Overexpression of miR-380 inhibited expression of MMP-2/p-AKT/LIS1, but miR-380 inhibitor promoted their expression. CONCLUSION An imbalance of miR-380 expression is closely related to cholangiocarcinoma, and overexpression of miR-380 inhibits the expression of MMP-2/p-AKT by directly targeting LIS1.
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Affiliation(s)
- Zhicheng Wei
- Department of Hepatobiliary Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
- Department of Hepatobiliary and Pancreatic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, 518116, China
| | - Bowen Xu
- Department of Hepatobiliary Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
- Key Laboratory of Gene Editing Screening and Research and Development (R&D) of Digestive System Tumor Drugs, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - Yanjiang Yin
- Department of Hepatobiliary Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
- Key Laboratory of Gene Editing Screening and Research and Development (R&D) of Digestive System Tumor Drugs, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - Jianping Chang
- Department of Hepatobiliary Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - Zhiyu Li
- Department of Hepatobiliary Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - Yefan Zhang
- Department of Hepatobiliary Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - Xu Che
- Department of Hepatobiliary and Pancreatic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, 518116, China.
| | - Xinyu Bi
- Department of Hepatobiliary Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China.
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Dalmaso B, Liber AMP, Ventura DF, Jancar S, Del Debbio CB. Platelet-activating factor receptor (PAFR) regulates neuronal maturation and synaptic transmission during postnatal retinal development. Front Cell Neurosci 2024; 18:1343745. [PMID: 38572071 PMCID: PMC10988781 DOI: 10.3389/fncel.2024.1343745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 02/19/2024] [Indexed: 04/05/2024] Open
Abstract
Introduction Platelet-activating factor (PAF), PAF receptor (PAFR), and PAF- synthesis/degradation systems are involved in essential CNS processes such as neuroblast proliferation, differentiation, migration, and synaptic modulation. The retina is an important central nervous system (CNS) tissue for visual information processing. During retinal development, the balance between Retinal Progenitor Cell (RPC) proliferation and differentiation is crucial for proper cell determination and retinogenesis. Despite its importance in retinal development, the effects of PAFR deletion on RPC dynamics are still unknown. Methods We compared PAFR knockout mice (PAFR-/-) retinal postnatal development proliferation and differentiation aspects with control animals. Electrophysiological responses were analyzed by electroretinography (ERG). Results and discussion In this study, we demonstrate that PAFR-/- mice increased proliferation during postnatal retinogenesis and altered the expression of specific differentiation markers. The retinas of postnatal PAFR-/- animals decreased neuronal differentiation and synaptic transmission markers, leading to differential responses to light stimuli measured by ERG. Our findings suggest that PAFR signaling plays a critical role in regulating postnatal RPC cell differentiation dynamics during retinal development, cell organization, and neuronal circuitry formation.
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Affiliation(s)
- Barbara Dalmaso
- Department of Cell and Developmental Biology, Biomedical Sciences Institute, University of São Paulo (ICB-USP), São Paulo, Brazil
| | - Andre Mauricio Passos Liber
- Université Paris-Saclay, CNRS, Institut des Neurosciences Paris-Saclay, Saclay, France
- Department of Experimental Psychology, Institute of Psychology, University of São Paulo (IP-USP), São Paulo, Brazil
| | - Dora Fix Ventura
- Department of Experimental Psychology, Institute of Psychology, University of São Paulo (IP-USP), São Paulo, Brazil
| | - Sonia Jancar
- Department of Immunology, Biomedical Sciences Institute, University of São Paulo (ICB-USP), São Paulo, Brazil
| | - Carolina Beltrame Del Debbio
- Department of Cell and Developmental Biology, Biomedical Sciences Institute, University of São Paulo (ICB-USP), São Paulo, Brazil
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Tsai MH, Lin WC, Chen SY, Hsieh MY, Nian FS, Cheng HY, Zhao HJ, Hung SS, Hsu CH, Hou PS, Tung CY, Lee MH, Tsai JW. A lissencephaly-associated BAIAP2 variant causes defects in neuronal migration during brain development. Development 2024; 151:dev201912. [PMID: 38149472 DOI: 10.1242/dev.201912] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 12/12/2023] [Indexed: 12/28/2023]
Abstract
Lissencephaly is a neurodevelopmental disorder characterized by a loss of brain surface convolutions caused by genetic variants that disrupt neuronal migration. However, the genetic origins of the disorder remain unidentified in nearly one-fifth of people with lissencephaly. Using whole-exome sequencing, we identified a de novo BAIAP2 variant, p.Arg29Trp, in an individual with lissencephaly with a posterior more severe than anterior (P>A) gradient, implicating BAIAP2 as a potential lissencephaly gene. Spatial transcriptome analysis in the developing mouse cortex revealed that Baiap2 is expressed in the cortical plate and intermediate zone in an anterior low to posterior high gradient. We next used in utero electroporation to explore the effects of the Baiap2 variant in the developing mouse cortex. We found that Baiap2 knockdown caused abnormalities in neuronal migration, morphogenesis and differentiation. Expression of the p.Arg29Trp variant failed to rescue the migration defect, suggesting a loss-of-function effect. Mechanistically, the variant interfered with the ability of BAIAP2 to localize to the cell membrane. These results suggest that the functions of BAIAP2 in the cytoskeleton, cell morphogenesis and migration are important for cortical development and for the pathogenesis of lissencephaly in humans.
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Affiliation(s)
- Meng-Han Tsai
- Department of Neurology & Department of Medical Research, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan
- School of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Wan-Cian Lin
- Institute of Brain Science, College of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
- Faculty of Medicine, College of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
| | - Shih-Ying Chen
- Department of Neurology & Department of Medical Research, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan
| | - Meng-Ying Hsieh
- Division of Pediatric Neurology, Department of Pediatrics, Chang Gung Memorial Hospital, Taipei 105, Taiwan
| | - Fang-Shin Nian
- Institute of Brain Science, College of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
- Institute of Clinical Medicine, College of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
| | - Haw-Yuan Cheng
- Institute of Brain Science, College of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
| | - Hong-Jun Zhao
- Institute of Brain Science, College of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
| | - Shih-Shun Hung
- Institute of Anatomy and Cell Biology, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
| | - Chi-Hsin Hsu
- Genomics Center for Clinical and Biotechnological Applications, Cancer Progression Research Center, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
| | - Pei-Shan Hou
- Institute of Anatomy and Cell Biology, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
| | - Chien-Yi Tung
- Genomics Center for Clinical and Biotechnological Applications, Cancer Progression Research Center, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
| | - Mei-Hsuan Lee
- Institute of Clinical Medicine, College of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
- Advanced Therapeutics Research Center, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
| | - Jin-Wu Tsai
- Institute of Brain Science, College of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
- Advanced Therapeutics Research Center, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
- Brain Research Center, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
- Department of Biological Science and Technology, College of Biological Science and Technology, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan
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Powers RM, Hevner RF, Halpain S. The Neuron Navigators: Structure, function, and evolutionary history. Front Mol Neurosci 2023; 15:1099554. [PMID: 36710926 PMCID: PMC9877351 DOI: 10.3389/fnmol.2022.1099554] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 12/19/2022] [Indexed: 01/13/2023] Open
Abstract
Neuron navigators (Navigators) are cytoskeletal-associated proteins important for neuron migration, neurite growth, and axon guidance, but they also function more widely in other tissues. Recent studies have revealed novel cellular functions of Navigators such as macropinocytosis, and have implicated Navigators in human disorders of axon growth. Navigators are present in most or all bilaterian animals: vertebrates have three Navigators (NAV1-3), Drosophila has one (Sickie), and Caenorhabditis elegans has one (Unc-53). Structurally, Navigators have conserved N- and C-terminal regions each containing specific domains. The N-terminal region contains a calponin homology (CH) domain and one or more SxIP motifs, thought to interact with the actin cytoskeleton and mediate localization to microtubule plus-end binding proteins, respectively. The C-terminal region contains two coiled-coil domains, followed by a AAA+ family nucleoside triphosphatase domain of unknown activity. The Navigators appear to have evolved by fusion of N- and C-terminal region homologs present in simpler organisms. Overall, Navigators participate in the cytoskeletal response to extracellular cues via microtubules and actin filaments, in conjunction with membrane trafficking. We propose that uptake of fluid-phase cues and nutrients and/or downregulation of cell surface receptors could represent general mechanisms that explain Navigator functions. Future studies developing new models, such as conditional knockout mice or human cerebral organoids may reveal new insights into Navigator function. Importantly, further biochemical studies are needed to define the activities of the Navigator AAA+ domain, and to study potential interactions among different Navigators and their binding partners.
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Affiliation(s)
- Regina M. Powers
- Department of Neurobiology, School of Biological Sciences, University of California, San Diego, La Jolla, CA, United States,Sanford Consortium for Regenerative Medicine, La Jolla, CA, United States
| | - Robert F. Hevner
- Sanford Consortium for Regenerative Medicine, La Jolla, CA, United States,Department of Pathology, UC San Diego School of Medicine, University of California, San Diego, La Jolla, CA, United States
| | - Shelley Halpain
- Department of Neurobiology, School of Biological Sciences, University of California, San Diego, La Jolla, CA, United States,Sanford Consortium for Regenerative Medicine, La Jolla, CA, United States,*Correspondence: Shelley Halpain, ✉
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Hansen AH, Pauler FM, Riedl M, Streicher C, Heger A, Laukoter S, Sommer C, Nicolas A, Hof B, Tsai LH, Rülicke T, Hippenmeyer S. Tissue-Wide Effects Override Cell-Intrinsic Gene Function in Radial Neuron Migration. OXFORD OPEN NEUROSCIENCE 2022; 1:kvac009. [PMID: 38596707 PMCID: PMC10939316 DOI: 10.1093/oons/kvac009] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 04/26/2022] [Accepted: 05/15/2022] [Indexed: 04/11/2024]
Abstract
The mammalian neocortex is composed of diverse neuronal and glial cell classes that broadly arrange in six distinct laminae. Cortical layers emerge during development and defects in the developmental programs that orchestrate cortical lamination are associated with neurodevelopmental diseases. The developmental principle of cortical layer formation depends on concerted radial projection neuron migration, from their birthplace to their final target position. Radial migration occurs in defined sequential steps, regulated by a large array of signaling pathways. However, based on genetic loss-of-function experiments, most studies have thus far focused on the role of cell-autonomous gene function. Yet, cortical neuron migration in situ is a complex process and migrating neurons traverse along diverse cellular compartments and environments. The role of tissue-wide properties and genetic state in radial neuron migration is however not clear. Here we utilized mosaic analysis with double markers (MADM) technology to either sparsely or globally delete gene function, followed by quantitative single-cell phenotyping. The MADM-based gene ablation paradigms in combination with computational modeling demonstrated that global tissue-wide effects predominate cell-autonomous gene function albeit in a gene-specific manner. Our results thus suggest that the genetic landscape in a tissue critically affects the overall migration phenotype of individual cortical projection neurons. In a broader context, our findings imply that global tissue-wide effects represent an essential component of the underlying etiology associated with focal malformations of cortical development in particular, and neurological diseases in general.
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Affiliation(s)
- Andi H Hansen
- Institute of Science and Technology Austria, Am Campus 1, 3400 Klosterneuburg, Austria
| | - Florian M Pauler
- Institute of Science and Technology Austria, Am Campus 1, 3400 Klosterneuburg, Austria
| | - Michael Riedl
- Institute of Science and Technology Austria, Am Campus 1, 3400 Klosterneuburg, Austria
| | - Carmen Streicher
- Institute of Science and Technology Austria, Am Campus 1, 3400 Klosterneuburg, Austria
| | - Anna Heger
- Institute of Science and Technology Austria, Am Campus 1, 3400 Klosterneuburg, Austria
| | - Susanne Laukoter
- Institute of Science and Technology Austria, Am Campus 1, 3400 Klosterneuburg, Austria
| | - Christoph Sommer
- Institute of Science and Technology Austria, Am Campus 1, 3400 Klosterneuburg, Austria
| | - Armel Nicolas
- Institute of Science and Technology Austria, Am Campus 1, 3400 Klosterneuburg, Austria
| | - Björn Hof
- Institute of Science and Technology Austria, Am Campus 1, 3400 Klosterneuburg, Austria
| | - Li Huei Tsai
- Picower Institute for Learning and Memory, MIT, Cambridge, MA 02139, USA
| | - Thomas Rülicke
- Department of Biomedical Sciences, University of Veterinary Medicine Vienna, 1210 Vienna, Austria
| | - Simon Hippenmeyer
- Institute of Science and Technology Austria, Am Campus 1, 3400 Klosterneuburg, Austria
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6
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Mierke CT. Editorial: Editor’s Pick 2021: Highlights in Cell Adhesion and Migration. Front Cell Dev Biol 2022; 10:852781. [PMID: 35321244 PMCID: PMC8934779 DOI: 10.3389/fcell.2022.852781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 02/16/2022] [Indexed: 11/13/2022] Open
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7
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Liu X, Bennison SA, Robinson L, Toyo-oka K. Responsible Genes for Neuronal Migration in the Chromosome 17p13.3: Beyond Pafah1b1(Lis1), Crk and Ywhae(14-3-3ε). Brain Sci 2021; 12:brainsci12010056. [PMID: 35053800 PMCID: PMC8774252 DOI: 10.3390/brainsci12010056] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Revised: 12/13/2021] [Accepted: 12/23/2021] [Indexed: 01/07/2023] Open
Abstract
The 17p13.3 chromosome region is often deleted or duplicated in humans, resulting in severe neurodevelopmental disorders such as Miller–Dieker syndrome (MDS) and 17p13.3 duplication syndrome. Lissencephaly can also be caused by gene mutations or deletions of a small piece of the 17p13.3 region, including a single gene or a few genes. PAFAH1B1 gene, coding for LIS1 protein, is a responsible gene for lissencephaly and MDS and regulates neuronal migration by controlling microtubules (MTs) and cargo transport along MTs via dynein. CRK is a downstream regulator of the reelin signaling pathways and regulates neuronal migration. YWHAE, coding for 14-3-3ε, is also responsible for MDS and regulates neuronal migration by binding to LIS1-interacting protein, NDEL1. Although these three proteins are known to be responsible for neuronal migration defects in MDS, there are 23 other genes in the MDS critical region on chromosome 17p13.3, and little is known about their functions in neurodevelopment, especially in neuronal migration. This review will summarize the recent progress on the functions of LIS1, CRK, and 14-3-3ε and describe the recent findings of other molecules in the MDS critical regions in neuronal migration.
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Affiliation(s)
- Xiaonan Liu
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA 19129, USA;
- Department of Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, PA 19129, USA; (S.A.B.); (L.R.)
| | - Sarah A. Bennison
- Department of Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, PA 19129, USA; (S.A.B.); (L.R.)
| | - Lozen Robinson
- Department of Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, PA 19129, USA; (S.A.B.); (L.R.)
| | - Kazuhito Toyo-oka
- Department of Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, PA 19129, USA; (S.A.B.); (L.R.)
- Correspondence: ; Tel.: +1-(215)-991-8288
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8
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Liu M, Xu Z, Zhang C, Yang C, Feng J, Lu Y, Zhang W, Chen W, Xu X, Sun X, Yang M, Liu W, Zhou T, Yang Y. NudC L279P Mutation Destabilizes Filamin A by Inhibiting the Hsp90 Chaperoning Pathway and Suppresses Cell Migration. Front Cell Dev Biol 2021; 9:671233. [PMID: 34262899 PMCID: PMC8273881 DOI: 10.3389/fcell.2021.671233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 05/31/2021] [Indexed: 11/29/2022] Open
Abstract
Filamin A, the first discovered non-muscle actin filament cross-linking protein, plays a crucial role in regulating cell migration that participates in diverse cellular and developmental processes. However, the regulatory mechanism of filamin A stability remains unclear. Here, we find that nuclear distribution gene C (NudC), a cochaperone of heat shock protein 90 (Hsp90), is required to stabilize filamin A in mammalian cells. Immunoprecipitation-mass spectrometry and western blotting analyses reveal that NudC interacts with filamin A. Overexpression of human NudC-L279P (an evolutionarily conserved mutation in NudC that impairs its chaperone activity) not only decreases the protein level of filamin A but also results in actin disorganization and the suppression of cell migration. Ectopic expression of filamin A is able to reverse these defects induced by the overexpression of NudC-L279P. Furthermore, Hsp90 forms a complex with filamin A. The inhibition of Hsp90 ATPase activity by either geldanamycin or radicicol decreases the protein stability of filamin A. In addition, ectopic expression of Hsp90 efficiently restores NudC-L279P overexpression-induced protein stability and functional defects of filamin A. Taken together, these data suggest NudC L279P mutation destabilizes filamin A by inhibiting the Hsp90 chaperoning pathway and suppresses cell migration.
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Affiliation(s)
- Min Liu
- Department of Cell Biology, and Institute of Gastroenterology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Zhangqi Xu
- Department of Cell Biology, and Institute of Gastroenterology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Cheng Zhang
- Department of Cell Biology, and Institute of Gastroenterology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Chunxia Yang
- Department of Cell Biology, and Institute of Gastroenterology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jiaxing Feng
- Department of Cell Biology, and Institute of Gastroenterology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yiqing Lu
- Department of Cell Biology, and Institute of Gastroenterology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Wen Zhang
- Department of Cell Biology, and Institute of Gastroenterology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Wenwen Chen
- Department of Cell Biology, and Institute of Gastroenterology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xiaoyang Xu
- Department of Cell Biology, and Institute of Gastroenterology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xiaoxia Sun
- Department of Cell Biology, and Institute of Gastroenterology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Mingyang Yang
- Department of Cell Biology, and Institute of Gastroenterology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Wei Liu
- Department of Cell Biology, and Institute of Gastroenterology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Tianhua Zhou
- Department of Cell Biology, and Institute of Gastroenterology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,The Cancer Center of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China.,Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Yuehong Yang
- Department of Cell Biology, and Institute of Gastroenterology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
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9
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Hang X, He S, Dong Z, Minnick G, Rosenbohm J, Chen Z, Yang R, Chang L. Nanosensors for single cell mechanical interrogation. Biosens Bioelectron 2021; 179:113086. [DOI: 10.1016/j.bios.2021.113086] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 02/07/2021] [Accepted: 02/09/2021] [Indexed: 02/08/2023]
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10
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Stoufflet J, Chaulet M, Doulazmi M, Fouquet C, Dubacq C, Métin C, Schneider-Maunoury S, Trembleau A, Vincent P, Caillé I. Primary cilium-dependent cAMP/PKA signaling at the centrosome regulates neuronal migration. SCIENCE ADVANCES 2020; 6:6/36/eaba3992. [PMID: 32917588 PMCID: PMC7467704 DOI: 10.1126/sciadv.aba3992] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Accepted: 07/20/2020] [Indexed: 05/08/2023]
Abstract
The primary cilium (PC) is a small centrosome-assembled organelle, protruding from the surface of most eukaryotic cells. It plays a key role in cell migration, but the underlying mechanisms are unknown. Here, we show that the PC regulates neuronal migration via cyclic adenosine 3'-5' monosphosphate (cAMP) production activating centrosomal protein kinase A (PKA). Biosensor live imaging revealed a periodic cAMP hotspot at the centrosome of embryonic, postnatal, and adult migrating neurons. Genetic ablation of the PC, or knockdown of ciliary adenylate cyclase 3, caused hotspot disappearance and migratory defects, with defective centrosome dynamics and altered nucleokinesis. Delocalization of PKA from the centrosome phenocopied the migratory defects. Our results show that the PC and centrosome form a single cAMP signaling unit dynamically regulating migration, further highlighting the centrosome as a signaling hub.
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Affiliation(s)
- Julie Stoufflet
- Sorbonne Université, CNRS UMR8246, Inserm U1130, Institut de Biologie Paris Seine (IBPS), Neuroscience Paris Seine (NPS), F-75005 Paris, France
- Sorbonne Université, CNRS UMR8256, Institut Biologie Paris Seine (IBPS), Biological Adaptation and Ageing (B2A), F-75005 Paris, France
| | - Maxime Chaulet
- Sorbonne Université, CNRS UMR8246, Inserm U1130, Institut de Biologie Paris Seine (IBPS), Neuroscience Paris Seine (NPS), F-75005 Paris, France
| | - Mohamed Doulazmi
- Sorbonne Université, CNRS UMR8256, Institut Biologie Paris Seine (IBPS), Biological Adaptation and Ageing (B2A), F-75005 Paris, France
| | - Coralie Fouquet
- Sorbonne Université, CNRS UMR8246, Inserm U1130, Institut de Biologie Paris Seine (IBPS), Neuroscience Paris Seine (NPS), F-75005 Paris, France
| | - Caroline Dubacq
- Sorbonne Université, CNRS UMR8246, Inserm U1130, Institut de Biologie Paris Seine (IBPS), Neuroscience Paris Seine (NPS), F-75005 Paris, France
| | - Christine Métin
- Inserm UMR-S839, Institut du Fer à Moulin, Sorbonne Université, Paris, France
| | - Sylvie Schneider-Maunoury
- Sorbonne Université, CNRS UMR7622, Inserm ERL U1156, Institut Biologie Paris Seine (IBPS), Developmental Biology Laboratory (LBD), F-75005 Paris, France
| | - Alain Trembleau
- Sorbonne Université, CNRS UMR8246, Inserm U1130, Institut de Biologie Paris Seine (IBPS), Neuroscience Paris Seine (NPS), F-75005 Paris, France
| | - Pierre Vincent
- Sorbonne Université, CNRS UMR8256, Institut Biologie Paris Seine (IBPS), Biological Adaptation and Ageing (B2A), F-75005 Paris, France.
| | - Isabelle Caillé
- Sorbonne Université, CNRS UMR8246, Inserm U1130, Institut de Biologie Paris Seine (IBPS), Neuroscience Paris Seine (NPS), F-75005 Paris, France.
- Université de Paris, Paris, France
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11
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Abstract
Cell migration plays pivotal roles in many biological processes; however, its underlying mechanism remains unclear. Here, we find that NudC-like protein 2 (NudCL2), a cochaperone of heat shock protein 90 (Hsp90), modulates cell migration by stabilizing both myosin-9 and lissencephaly protein 1 (LIS1). Either knockdown or knockout of NudCL2 significantly increases single-cell migration, but has no significant effect on collective cell migration. Immunoprecipitation–mass spectrometry and western blotting analyses reveal that NudCL2 binds to myosin-9 in mammalian cells. Depletion of NudCL2 not only decreases myosin-9 protein levels, but also results in actin disorganization. Ectopic expression of myosin-9 efficiently reverses defects in actin disorganization and single-cell migration in cells depleted of NudCL2. Interestingly, knockdown of myosin-9 increases both single and collective cell migration. Depletion of LIS1, a NudCL2 client protein, suppresses both single and collective cell migration, which exhibits the opposite effect compared with myosin-9 depletion. Co-depletion of myosin-9 and LIS1 promotes single-cell migration, resembling the phenotype caused by NudCL2 depletion. Furthermore, inhibition of Hsp90 ATPase activity also reduces the Hsp90-interacting protein myosin-9 stability and increases single-cell migration. Forced expression of Hsp90 efficiently reverses myosin-9 protein instability and the defects induced by NudCL2 depletion, but not vice versa. Taken together, these data suggest that NudCL2 plays an important role in the precise regulation of cell migration by stabilizing both myosin-9 and LIS1 via Hsp90 pathway.
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12
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Tsai MH, Cheng HY, Nian FS, Liu C, Chao NH, Chiang KL, Chen SF, Tsai JW. Impairment in dynein-mediated nuclear translocation by BICD2 C-terminal truncation leads to neuronal migration defect and human brain malformation. Acta Neuropathol Commun 2020; 8:106. [PMID: 32665036 PMCID: PMC7362644 DOI: 10.1186/s40478-020-00971-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Accepted: 06/19/2020] [Indexed: 02/06/2023] Open
Abstract
During brain development, the nucleus of migrating neurons follows the centrosome and translocates into the leading process. Defects in these migratory events, which affect neuronal migration, cause lissencephaly and other neurodevelopmental disorders. However, the mechanism of nuclear translocation remains elusive. Using whole exome sequencing (WES), we identified a novel nonsense BICD2 variant p.(Lys775Ter) (K775X) from a lissencephaly patient. Interestingly, most BICD2 missense variants have been associated with human spinal muscular atrophy (SMA) without obvious brain malformations. By in utero electroporation, we showed that BicD2 knockdown in mouse embryos inhibited neuronal migration. Surprisingly, we observed severe blockage of neuronal migration in cells overexpressing K775X but not in those expressing wild-type BicD2 or SMA-associated missense variants. The centrosome of the mutant was, on average, positioned farther away from the nucleus, indicating a failure in nuclear translocation without affecting the centrosome movement. Furthermore, BicD2 localized at the nuclear envelope (NE) through its interaction with NE protein Nesprin-2. K775X variant disrupted this interaction and further interrupted the NE recruitment of BicD2 and dynein. Remarkably, fusion of BicD2-K775X with NE-localizing domain KASH resumed neuronal migration. Our results underscore impaired nuclear translocation during neuronal migration as an important pathomechanism of lissencephaly.
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13
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Chhatre A, Sanghavi P, Mallik R. Lis1 co-localizes with actin in the phagocytic cup and regulates phagocytosis. Cytoskeleton (Hoboken) 2020; 77:249-260. [PMID: 32524725 DOI: 10.1002/cm.21621] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 05/09/2020] [Accepted: 06/07/2020] [Indexed: 12/24/2022]
Abstract
Phagocytosis, the ingestion of solid particles by cells is essential for nutrient uptake, innate immune response, antigen presentation and organelle homeostasis. Here we show that Lissencephaly-1 (Lis1), a well-known regulator of the microtubule motor dynein, co-localizes with actin at the phagocytic cup in the early stages of phagocytosis. Both knockdown and overexpression of Lis1 perturb phagocytosis, suggesting that Lis1 levels may be regulated during particle engulfment to facilitate remodeling of actin filaments within the phagocytic cup. This requirement of Lis1 is replicated in mouse macrophage cells as well as in the amoeba Dictyostelium, indicating an evolutionarily conserved role for Lis1 in phagocytosis. In support of these findings, Dictyostelium cells overexpressing Lis1 show defects in migration possibly caused by dysregulated actin. Taken together, Lis1 localizes to the phagocytic cup and influences the actin cytoskeleton in a manner that appears important for the uptake of solid particles into cells.
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Affiliation(s)
- Aditya Chhatre
- Department of Biological Sciences, Tata Institute of Fundamental Research, Mumbai, India
| | - Paulomi Sanghavi
- Department of Biological Sciences, Tata Institute of Fundamental Research, Mumbai, India
| | - Roop Mallik
- Department of Biological Sciences, Tata Institute of Fundamental Research, Mumbai, India
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14
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Moon HM, Hippenmeyer S, Luo L, Wynshaw-Boris A. LIS1 determines cleavage plane positioning by regulating actomyosin-mediated cell membrane contractility. eLife 2020; 9:51512. [PMID: 32159512 PMCID: PMC7112955 DOI: 10.7554/elife.51512] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Accepted: 03/10/2020] [Indexed: 11/16/2022] Open
Abstract
Heterozygous loss of human PAFAH1B1 (coding for LIS1) results in the disruption of neurogenesis and neuronal migration via dysregulation of microtubule (MT) stability and dynein motor function/localization that alters mitotic spindle orientation, chromosomal segregation, and nuclear migration. Recently, human- induced pluripotent stem cell (iPSC) models revealed an important role for LIS1 in controlling the length of terminal cell divisions of outer radial glial (oRG) progenitors, suggesting cellular functions of LIS1 in regulating neural progenitor cell (NPC) daughter cell separation. Here, we examined the late mitotic stages NPCs in vivo and mouse embryonic fibroblasts (MEFs) in vitro from Pafah1b1-deficient mutants. Pafah1b1-deficient neocortical NPCs and MEFs similarly exhibited cleavage plane displacement with mislocalization of furrow-associated markers, associated with actomyosin dysfunction and cell membrane hyper-contractility. Thus, it suggests LIS1 acts as a key molecular link connecting MTs/dynein and actomyosin, ensuring that cell membrane contractility is tightly controlled to execute proper daughter cell separation.
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Affiliation(s)
- Hyang Mi Moon
- Department of Pediatrics, Institute for Human Genetics, Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, United States
| | - Simon Hippenmeyer
- Howard Hughes Medical Institute and Department of Biology, Stanford University, Stanford, United States
| | - Liqun Luo
- Howard Hughes Medical Institute and Department of Biology, Stanford University, Stanford, United States
| | - Anthony Wynshaw-Boris
- Department of Pediatrics, Institute for Human Genetics, Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, United States.,Department of Genetics and Genome Sciences, Case Western Reserve University, School of Medicine, Cleveland, United States
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15
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Chang HY, Cheng HY, Tsao AN, Liu C, Tsai JW. Multiple Functions of KBP in Neural Development Underlie Brain Anomalies in Goldberg-Shprintzen Syndrome. Front Mol Neurosci 2019; 12:265. [PMID: 31736709 PMCID: PMC6838004 DOI: 10.3389/fnmol.2019.00265] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 10/16/2019] [Indexed: 11/13/2022] Open
Abstract
Kinesin-binding protein (KBP; KIF1BP; KIAA1279) functions as a regulator for a subset of kinesins, many of which play important roles in neural development. Previous studies have shown that KBP is expressed in nearly all tissue with cytoplasmic localization. Autosomal recessive mutations in KIAA1279 cause a rare neurological disorder, Goldberg-Shprintzen syndrome (GOSHS), characterized by microcephaly, polymicrogyria, intellectual disability, axonal neuropathy, thin corpus callosum and peripheral neuropathy. Most KIAA1279 mutations found in GOSHS patients are homozygous nonsense mutations that result in KBP loss-of-function. However, it is not fully understood how KBP dysfunction causes these defects. Here, we used in utero electroporation (IUE) to express KBP short hairpin RNA (shRNA) with green fluorescent protein (GFP) in neural progenitor cells of embryonic day (E) 14 mice, and collected brain slices at different developmental stages. By immunostaining of neuronal lineage markers, we found that KBP knockdown does not affect the neural differentiation process. However, at 4 days post IUE, many cells were located in the intermediate zone (IZ). Moreover, at postnatal day (P) 6, about one third of the cells, which have become mature neurons, remained ectopically in the white matter (WM), while cells that have reached Layer II/III of the cortex showed impaired dendritic outgrowth and axonal projection. We also found that KBP knockdown induces apoptosis during the postnatal period. Our findings indicate that loss of KBP function leads to defects in neuronal migration, morphogenesis, maturation, and survival, which may be responsible for brain phenotypes observed in GOSHS.
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Affiliation(s)
- Hsin-Yun Chang
- Institute of Brain Science, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Haw-Yuan Cheng
- Institute of Brain Science, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Ai-Ni Tsao
- Institute of Brain Science, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Chen Liu
- Institute of Brain Science, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Jin-Wu Tsai
- Institute of Brain Science, School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Brain Research Center, National Yang-Ming University, Taipei, Taiwan.,Department of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan
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16
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do Amaral JB, Bloise AC, França CN, Perez-Novo C, Machado-Santelli GM, Alencar AM, Pezato R. Alterations in cellular force parameters and cell projections in Nasal polyps-derived fibroblasts. Auris Nasus Larynx 2019; 47:98-104. [PMID: 31272842 DOI: 10.1016/j.anl.2019.06.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 06/07/2019] [Accepted: 06/20/2019] [Indexed: 02/03/2023]
Abstract
OBJECTIVE Chronic Rhinosinusitis with Nasal Polyps (CRSwNP) is a disease that features a mechanical dysfunction involving chronic inflammation and altered tissue remodeling. In this study, we aim to evaluate the fibroblast morphology and its cellular traction force in primary fibroblasts cell cultures obtained from both healthy individuals (n=7) and patients with CRSwNP (n=8). METHODS Using a Traction-force Microscopy we analyzed parameters of Force/Tension in fibroblasts cultures in both experimental groups. RESULTS The analysis of the Projected Area of Cell revealed that fibroblasts derived from nasal mucosa of healthy individuals have an area on average 39.24% larger than the fibroblasts obtained from the nasal polyp tissue. We also observed that the parameters directly related to the force of the cell, Max Cumulative Force and Net Contractile Moment, presented a high Force/Tension per unit of area in the fibroblasts derived from the healthy nasal mucosa (on average 41% and 52.54% higher than the fibroblasts of the nasal polyp respectively). CONCLUSION Our results demonstrate a cellular mechanism that may be associated with the mechanical dysfunction found in the Nasal Polyp tissue. The weak traction force of nasal polyp-derived fibroblast may, in lower dimensions, impact on the remodeling of nasal mucosa in CRSwNP.
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Affiliation(s)
- Jônatas Bussador do Amaral
- ENT Research Lab., Department of Otorhinolaryngology - Head and Neck Surgery, Federal University of Sao Paulo, Rua Coronel Lisboa, 958, Vila Clementino, São Paulo, SP, 04020-041, Brazil.
| | - Antonio Carlos Bloise
- Institute of Physics, University of Sao Paulo, Rua do Matão, Travessa R Número 187, Cidade Universitária, São Paulo, SP 05508-090, Brazil
| | - Carolina Nunes França
- Universidade Santo Amaro, Pós Graduação em Ciências da Saúde, Rua Enéas de Siqueira Neto, 340 Jardim das Imbuias, São Paulo, SP 04829-300, Brazil
| | - Claudina Perez-Novo
- Laboratory of Proteinchemistry, Proteomics and Epigenetic Signalling Department of Biomedical Sciences, Campus Drie Eiken, building T, first floor Universiteitsplein 1 2610 Wilrijk University of Antwerp, Belgium
| | - Gláucia Maria Machado-Santelli
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of Sao Paulo, Avenida Prof Lineu Prestes, 1524, dade Universitária, Sao Paulo, SP 05508-900, Brazil
| | - Adriano Mesquita Alencar
- Institute of Physics, University of Sao Paulo, Rua do Matão, Travessa R Número 187, Cidade Universitária, São Paulo, SP 05508-090, Brazil
| | - Rogério Pezato
- ENT Research Lab., Department of Otorhinolaryngology - Head and Neck Surgery, Federal University of Sao Paulo, Rua Coronel Lisboa, 958, Vila Clementino, São Paulo, SP, 04020-041, Brazil
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17
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Zeb1 is important for proper cleavage plane orientation of dividing progenitors and neuronal migration in the mouse neocortex. Cell Death Differ 2019; 26:2479-2492. [PMID: 30858607 DOI: 10.1038/s41418-019-0314-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 11/04/2018] [Accepted: 12/04/2018] [Indexed: 02/06/2023] Open
Abstract
During neocortical development, there are two important events, including expansion of the neural progenitor pool through symmetric divisions, and generation of neurons via asymmetrical divisions that lead to a serial process of neuronal polarization, migration, and layer-type specific phenotype acquisition. The mechanisms underlying these processes remain poorly elucidated. Here, we show that the transcription factor Zeb1 regulates the orientation of the cleavage plane of dividing neural progenitors, neuronal polarity, and migration. Upon Zeb1 removal, the cleavage plane of mitotic neural progenitors fails to orientate vertically, resulting in random orientation and premature neuronal differentiation. Consequently, these extra number of precociously produced neurons migrate aberrantly to the upper layer. Mechanistically, we show that Zeb1 suppresses Pak3, a p21-activated serine/threonine protein kinase, through formation of a functional repressing complex together with methyltransferase PRMT5 and Pak3. Our results reveal that Zeb1 plays an essential role in neocortical development and may provide insights into the mechanisms responsible for cortical developmental diseases.
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18
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Nian FS, Li LL, Cheng CY, Wu PC, Lin YT, Tang CY, Ren BS, Tai CY, Fann MJ, Kao LS, Hong CJ, Tsai JW. Rab18 Collaborates with Rab7 to Modulate Lysosomal and Autophagy Activities in the Nervous System: an Overlapping Mechanism for Warburg Micro Syndrome and Charcot-Marie-Tooth Neuropathy Type 2B. Mol Neurobiol 2019; 56:6095-6105. [PMID: 30721447 DOI: 10.1007/s12035-019-1471-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 01/10/2019] [Indexed: 01/24/2023]
Abstract
Mutations in RAB18, a member of small G protein, cause Warburg micro syndrome (WARBM), whose clinical features include vision impairment, postnatal microcephaly, and lower limb spasticity. Previously, our Rab18-/- mice exhibited hind limb weakness and spasticity as well as signs of axonal degeneration in the spinal cord and lumbar spinal nerves. However, the cellular and molecular function of RAB18 and its roles in the pathogenesis of WARBM are still not fully understood. Using immunofluorescence staining and expression of Rab18 and organelle markers, we find that Rab18 associates with lysosomes and actively traffics along neurites in cultured neurons. Interestingly, Rab18-/- neurons exhibit impaired lysosomal transport. Using autophagosome marker LC3-II, we show that Rab18 dysfunction leads to aberrant autophagy activities in neurons. Electron microscopy further reveals accumulation of lipofuscin-like granules in the dorsal root ganglion of Rab18-/- mice. Surprisingly, Rab18 colocalizes, cofractionates, and coprecipitates with the lysosomal regulator Rab7, mutations of which cause Charcot-Marie-Tooth (CMT) neuropathy type 2B. Moreover, Rab7 is upregulated in Rab18-deficient neurons, suggesting a compensatory effect. Together, our results suggest that the functions of RAB18 and RAB7 in lysosomal and autophagic activities may constitute an overlapping mechanism underlying WARBM and CMT pathogenesis in the nervous system.
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Affiliation(s)
- Fang-Shin Nian
- Institute of Brain Science, National Yang-Ming University, Taipei, Taiwan.,Program in Molecular Medicine, National Yang-Ming University and Academia Sinica, Taipei, Taiwan
| | - Lei-Li Li
- Institute of Brain Science, National Yang-Ming University, Taipei, Taiwan
| | - Chih-Ya Cheng
- Department of Pediatrics, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Pei-Chun Wu
- Department of Life Sciences and Institute of Genome Sciences, National Yang-Ming University, Taipei, Taiwan.,Brain Research Center, National Yang-Ming University, Taipei, Taiwan
| | - You-Tai Lin
- Department of Life Sciences and Institute of Genome Sciences, National Yang-Ming University, Taipei, Taiwan
| | - Cheng-Yung Tang
- Department of Life Sciences and Institute of Genome Sciences, National Yang-Ming University, Taipei, Taiwan
| | - Bo-Shiun Ren
- Institute of Brain Science, National Yang-Ming University, Taipei, Taiwan
| | - Chin-Yin Tai
- Institute of Molecular Biology, Academia Sinica, Nankang, Taipei, Taiwan
| | - Ming-Ji Fann
- Department of Life Sciences and Institute of Genome Sciences, National Yang-Ming University, Taipei, Taiwan.,Brain Research Center, National Yang-Ming University, Taipei, Taiwan
| | - Lung-Sen Kao
- Department of Life Sciences and Institute of Genome Sciences, National Yang-Ming University, Taipei, Taiwan.,Brain Research Center, National Yang-Ming University, Taipei, Taiwan
| | - Chen-Jee Hong
- Brain Research Center, National Yang-Ming University, Taipei, Taiwan.,Division of Psychiatry, School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Department of Psychiatry, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Jin-Wu Tsai
- Institute of Brain Science, National Yang-Ming University, Taipei, Taiwan. .,Brain Research Center, National Yang-Ming University, Taipei, Taiwan. .,Biopotonics and Molecular Imaging Research Center, National Yang-Ming University, Taipei, Taiwan.
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19
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Hsiao CJ, Chang CH, Ibrahim RB, Lin IH, Wang CH, Wang WJ, Tsai JW. Gli2 modulates cell cycle re-entry through autophagy-mediated regulation of the length of primary cilia. J Cell Sci 2018; 131:jcs.221218. [PMID: 30463852 DOI: 10.1242/jcs.221218] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 11/12/2018] [Indexed: 12/18/2022] Open
Abstract
The primary cilium is a tiny cell protrusion known to transduce key extracellular signals, including those of the sonic hedgehog pathway, which activates Gli transcription factors for various cellular functions. To understand the significance of the Gli2 transcription factor in fibroblasts, we establish a Gli2-knockout NIH3T3 cell line by CRISPR/Cas9 technology. Surprisingly, NIH3T3 fibroblasts lacking Gli2 expression through gene knockout or RNA interference possess longer primary cilia after stimulation of ciliogenesis by serum starvation. This lengthening of primary cilia is associated with enhanced autophagy-mediated Ofd1 degradation, and can be reversed by pharmacological and genetic inhibition of autophagy. Meanwhile, flow cytometry reveals that Gli2-/- NIH3T3 fibroblasts exhibit a delay in cell cycle re-entry after serum re-stimulation. Ablation of their primary cilia through Kif3a knockdown rescues the delay in cell cycle re-entry. These results suggest that Gli2 plays an unexpected role in cell cycle re-entry through an autophagy-mediated regulation on ciliary length in fibroblasts.
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Affiliation(s)
- Ching-Ju Hsiao
- Institute of Brain Science, School of Medicine, National Yang-Ming University, Taipei 112, Taiwan
| | - Chia-Hsiang Chang
- Institute of Brain Science, School of Medicine, National Yang-Ming University, Taipei 112, Taiwan.,Taiwan International Graduate Program (TIGP) in Molecular Medicine, National Yang-Ming University and Academia Sinica, Taipei 112, Taiwan
| | - Ridwan Babatunde Ibrahim
- Institute of Brain Science, School of Medicine, National Yang-Ming University, Taipei 112, Taiwan.,Taiwan International Graduate Program (TIGP) in Interdisciplinary Neuroscience, National Yang-Ming University and Academia Sinica, Taipei 112, Taiwan
| | - I-Hsuan Lin
- Taiwan International Graduate Program (TIGP) in Molecular Medicine, National Yang-Ming University and Academia Sinica, Taipei 112, Taiwan.,Institute of Biochemistry and Molecular Biology, College of Life Sciences, National Yang-Ming University, Taipei 112, Taiwan
| | - Chun-Hung Wang
- Institute of Brain Science, School of Medicine, National Yang-Ming University, Taipei 112, Taiwan
| | - Won-Jing Wang
- Institute of Biochemistry and Molecular Biology, College of Life Sciences, National Yang-Ming University, Taipei 112, Taiwan
| | - Jin-Wu Tsai
- Institute of Brain Science, School of Medicine, National Yang-Ming University, Taipei 112, Taiwan .,Brain Research Center (BRC), and Biophotonics and Molecular Imaging Research Center (BMIRC), National Yang-Ming University, Taipei 112, Taiwan
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20
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Chen YA, Lu IL, Tsai JW. Contactin-1/F3 Regulates Neuronal Migration and Morphogenesis Through Modulating RhoA Activity. Front Mol Neurosci 2018; 11:422. [PMID: 30515076 PMCID: PMC6255823 DOI: 10.3389/fnmol.2018.00422] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 10/30/2018] [Indexed: 01/06/2023] Open
Abstract
During neocortical development, newborn neurons migrate along radial fibers from the germinal ventricular zone (VZ) toward the cortical plate (CP) to populate the cerebral cortex. This radial migration requires adhesion activities between neurons and radial fibers; however, past research has identified only a limited number of adhesion molecules involved in this process. Contactin-1/F3 (Cntn1), a cell adhesion molecule expressed in the developing nervous system is essential for many key developmental events including neural cell adhesion, neurite outgrowth, axon guidance and myelination. However, the potential role of Cntn1 in neuronal migration during cortical development has not been investigated. Here we used in utero electroporation to introduce short hairpin RNA (shRNA) to knock down (KD) Cntn1 in neural stem cells in vivo. We found that Cntn1 KD led to a delay in neuronal migration. The arrested cells presented abnormal morphology in their leading process and more multipolar cells were observed in the deep layers of the brain, suggestive of dysregulation in process formation. Intriguingly, Cntn1 KD also resulted in upregulation of RhoA, a negative regulator for neuronal migration. Interference of RhoA by expression of the dominant-negative RhoAN19 partially rescued the neuronal migration defects caused by Cntn1 KD. Our results showed that Cntn1 is a novel adhesion protein that is essential for neuronal migration and regulates process formation of newborn cortical neurons through modulating RhoA signaling pathway.
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Affiliation(s)
- Yi-An Chen
- Institute of Brain Science, National Yang-Ming University, Taipei, Taiwan
| | - I-Ling Lu
- Institute of Brain Science, National Yang-Ming University, Taipei, Taiwan
| | - Jin-Wu Tsai
- Institute of Brain Science, National Yang-Ming University, Taipei, Taiwan.,Brain Research Center, National Yang-Ming University, Taipei, Taiwan.,Biophotonics and Molecular Imaging Research Center, National Yang-Ming University, Taipei, Taiwan
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