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Vicente JJ, Wagenbach M, Decarreau J, Zelter A, MacCoss MJ, Davis TN, Wordeman L. The kinesin motor Kif9 regulates centriolar satellite positioning and mitotic progression. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.03.587821. [PMID: 38617353 PMCID: PMC11014612 DOI: 10.1101/2024.04.03.587821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
Centrosomes are the principal microtubule-organizing centers of the cell and play an essential role in mitotic spindle function. Centrosome biogenesis is achieved by strict control of protein acquisition and phosphorylation prior to mitosis. Defects in this process promote fragmentation of pericentriolar material culminating in multipolar spindles and chromosome missegregation. Centriolar satellites, membrane-less aggrupations of proteins involved in the trafficking of proteins toward and away from the centrosome, are thought to contribute to centrosome biogenesis. Here we show that the microtubule plus-end directed kinesin motor Kif9 localizes to centriolar satellites and regulates their pericentrosomal localization during interphase. Lack of Kif9 leads to aggregation of satellites closer to the centrosome and increased centrosomal protein degradation that disrupts centrosome maturation and results in chromosome congression and segregation defects during mitosis. Our data reveal roles for Kif9 and centriolar satellites in the regulation of cellular proteostasis and mitosis.
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2
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Ryu S, Ko D, Shin B, Rhee K. The intercentriolar fibers function as docking sites of centriolar satellites for cilia assembly. J Cell Biol 2024; 223:e202105065. [PMID: 38416111 PMCID: PMC10901237 DOI: 10.1083/jcb.202105065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 08/09/2023] [Accepted: 01/15/2024] [Indexed: 02/29/2024] Open
Abstract
Two mother centrioles in an animal cell are linked by intercentriolar fibers that have CROCC/rootletin as their main building block. Here, we investigated the regulatory role of intercentriolar/rootlet fibers in cilia assembly. The cilia formation rates were significantly reduced in the CEP250/C-NAP1 and CROCC/rootletin knockout (KO) cells, irrespective of the departure of the young mother centrioles from the basal bodies. In addition, centriolar satellites were dispersed throughout the cytoplasm in the CEP250 and CROCC KO cells. We observed that PCM1 directly binds to CROCC. Their interaction is critical not only for the accumulation of centriolar satellites near the centrosomes/basal bodies but also for cilia formation. Finally, we observed that the centriolar satellite proteins are localized at the intercentriolar/rootlet fibers in the kidney epithelial cells. Based on these findings, we propose that the intercentriolar/rootlet fibers function as docking sites for centriolar satellites near the centrosomes/basal bodies and facilitate the cilia assembly process.
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Affiliation(s)
- Sungjin Ryu
- Department of Biological Sciences, Seoul National University, Seoul, South Korea
| | - Donghee Ko
- Department of Biological Sciences, Seoul National University, Seoul, South Korea
| | - Byungho Shin
- Department of Biological Sciences, Seoul National University, Seoul, South Korea
| | - Kunsoo Rhee
- Department of Biological Sciences, Seoul National University, Seoul, South Korea
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3
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Rodriguez-Calado S, Van Damme P, Avilés FX, Candiota AP, Tanco S, Lorenzo J. Proximity Mapping of CCP6 Reveals Its Association with Centrosome Organization and Cilium Assembly. Int J Mol Sci 2023; 24:ijms24021273. [PMID: 36674791 PMCID: PMC9867282 DOI: 10.3390/ijms24021273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 01/02/2023] [Accepted: 01/03/2023] [Indexed: 01/10/2023] Open
Abstract
The cytosolic carboxypeptidase 6 (CCP6) catalyzes the deglutamylation of polyglutamate side chains, a post-translational modification that affects proteins such as tubulins or nucleosome assembly proteins. CCP6 is involved in several cell processes, such as spermatogenesis, antiviral activity, embryonic development, and pathologies like renal adenocarcinoma. In the present work, the cellular role of CCP6 has been assessed by BioID, a proximity labeling approach for mapping physiologically relevant protein-protein interactions (PPIs) and bait proximal proteins by mass spectrometry. We used HEK 293 cells stably expressing CCP6-BirA* to identify 37 putative interactors of this enzyme. This list of CCP6 proximal proteins displayed enrichment of proteins associated with the centrosome and centriolar satellites, indicating that CCP6 could be present in the pericentriolar material. In addition, we identified cilium assembly-related proteins as putative interactors of CCP6. In addition, the CCP6 proximal partner list included five proteins associated with the Joubert syndrome, a ciliopathy linked to defects in polyglutamylation. Using the proximity ligation assay (PLA), we show that PCM1, PIBF1, and NudC are true CCP6 physical interactors. Therefore, the BioID methodology confirms the location and possible functional role of CCP6 in centrosomes and centrioles, as well as in the formation and maintenance of primary cilia.
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Affiliation(s)
- Sergi Rodriguez-Calado
- Institut de Biotecnologia i Biomedicina, Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain
| | - Petra Van Damme
- iRIP Unit, Laboratory of Microbiology, Department of Biochemistry and Microbiology, Ghent University, K. L. Ledeganckstraat 35, 9000 Ghent, Belgium
| | - Francesc Xavier Avilés
- Institut de Biotecnologia i Biomedicina, Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain
| | - Ana Paula Candiota
- Institut de Biotecnologia i Biomedicina, Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain
- Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 08193 Cerdanyola del Vallès, Barcelona, Spain
| | - Sebastian Tanco
- Institut de Biotecnologia i Biomedicina, Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain
- Correspondence: (S.T.); (J.L.); Tel.: +34-93-586-8938 (S.T.); +34-93-586-8957 (J.L.)
| | - Julia Lorenzo
- Institut de Biotecnologia i Biomedicina, Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain
- Correspondence: (S.T.); (J.L.); Tel.: +34-93-586-8938 (S.T.); +34-93-586-8957 (J.L.)
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4
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Wang L, Paudyal SC, Kang Y, Owa M, Liang FX, Spektor A, Knaut H, Sánchez I, Dynlacht BD. Regulators of tubulin polyglutamylation control nuclear shape and cilium disassembly by balancing microtubule and actin assembly. Cell Res 2022; 32:190-209. [PMID: 34782749 PMCID: PMC8807603 DOI: 10.1038/s41422-021-00584-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 10/05/2021] [Indexed: 02/03/2023] Open
Abstract
Cytoskeletal networks play an important role in regulating nuclear morphology and ciliogenesis. However, the role of microtubule (MT) post-translational modifications in nuclear shape regulation and cilium disassembly has not been explored. Here we identified a novel regulator of the tubulin polyglutamylase complex (TPGC), C11ORF49/CSTPP1, that regulates cytoskeletal organization, nuclear shape, and cilium disassembly. Mechanistically, loss of C11ORF49/CSTPP1 impacts the assembly and stability of the TPGC, which modulates long-chain polyglutamylation levels on microtubules (MTs) and thereby balances the binding of MT-associated proteins and actin nucleators. As a result, loss of TPGC leads to aberrant, enhanced assembly of MTs that penetrate the nucleus, which in turn leads to defects in nuclear shape, and disorganization of cytoplasmic actin that disrupts the YAP/TAZ pathway and cilium disassembly. Further, we showed that C11ORF49/CSTPP1-TPGC plays mechanistically distinct roles in the regulation of nuclear shape and cilium disassembly. Remarkably, disruption of C11ORF49/CSTPP1-TPGC also leads to developmental defects in vivo. Our findings point to an unanticipated nexus that links tubulin polyglutamylation with nuclear shape and ciliogenesis.
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Affiliation(s)
- Lei Wang
- Department of Pathology, New York University Cancer Institute, New York University School of Medicine, New York, NY, USA.
| | - Sharad C Paudyal
- Department of Radiation Oncology, Dana-Farber Cancer Institute, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Yuchen Kang
- Department of Pathology, New York University Cancer Institute, New York University School of Medicine, New York, NY, USA
| | - Mikito Owa
- Department of Pathology, New York University Cancer Institute, New York University School of Medicine, New York, NY, USA
| | - Feng-Xia Liang
- Microscopy Laboratory, Division of Advanced Research Technologies, NYU Langone Health, New York, NY, USA
| | - Alexander Spektor
- Department of Radiation Oncology, Dana-Farber Cancer Institute, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Holger Knaut
- Skirball Institute of Biomolecular Medicine, New York University School of Medicine, New York, NY, USA
| | - Irma Sánchez
- Department of Pathology, New York University Cancer Institute, New York University School of Medicine, New York, NY, USA
| | - Brian D Dynlacht
- Department of Pathology, New York University Cancer Institute, New York University School of Medicine, New York, NY, USA.
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5
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Estrogens—Origin of Centrosome Defects in Human Cancer? Cells 2022; 11:cells11030432. [PMID: 35159242 PMCID: PMC8833882 DOI: 10.3390/cells11030432] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 01/24/2022] [Accepted: 01/25/2022] [Indexed: 12/22/2022] Open
Abstract
Estrogens are associated with a variety of diseases and play important roles in tumor development and progression. Centrosome defects are hallmarks of human cancers and contribute to ongoing chromosome missegragation and aneuploidy that manifest in genomic instability and tumor progression. Although several mechanisms underlie the etiology of centrosome aberrations in human cancer, upstream regulators are hardly known. Accumulating experimental and clinical evidence points to an important role of estrogens in deregulating centrosome homeostasis and promoting karyotype instability. Here, we will summarize existing literature of how natural and synthetic estrogens might contribute to structural and numerical centrosome defects, genomic instability and human carcinogenesis.
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6
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Keep Calm and Carry on with Extra Centrosomes. Cancers (Basel) 2022; 14:cancers14020442. [PMID: 35053604 PMCID: PMC8774008 DOI: 10.3390/cancers14020442] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 01/01/2022] [Accepted: 01/03/2022] [Indexed: 02/01/2023] Open
Abstract
Simple Summary Precise chromosome segregation during mitosis is a vital event orchestrated by formation of bipolar spindle poles. Supernumerary centrosomes, caused by centrosome amplification, deteriorates mitotic processes, resulting in segregation defects leading to chromosomal instability (CIN). Centrosome amplification is frequently observed in various types of cancer and considered as a significant contributor to destabilization of chromosomes. This review provides a comprehensive overview of causes and consequences of centrosome amplification thoroughly describing molecular mechanisms. Abstract Aberrations in the centrosome number and structure can readily be detected at all stages of tumor progression and are considered hallmarks of cancer. Centrosome anomalies are closely linked to chromosome instability and, therefore, are proposed to be one of the driving events of tumor formation and progression. This concept, first posited by Boveri over 100 years ago, has been an area of interest to cancer researchers. We have now begun to understand the processes by which these numerical and structural anomalies may lead to cancer, and vice-versa: how key events that occur during carcinogenesis could lead to amplification of centrosomes. Despite the proliferative advantages that having extra centrosomes may confer, their presence can also lead to loss of essential genetic material as a result of segregational errors and cancer cells must deal with these deadly consequences. Here, we review recent advances in the current literature describing the mechanisms by which cancer cells amplify their centrosomes and the methods they employ to tolerate the presence of these anomalies, focusing particularly on centrosomal clustering.
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Argenty J, Rouquié N, Bories C, Mélique S, Duplan-Eche V, Saoudi A, Fazilleau N, Lesourne R. A selective LIS1 requirement for mitotic spindle assembly discriminates distinct T-cell division mechanisms within the T-cell lineage. eLife 2022; 11:80277. [PMID: 36519536 PMCID: PMC9797186 DOI: 10.7554/elife.80277] [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: 05/13/2022] [Accepted: 12/11/2022] [Indexed: 12/23/2022] Open
Abstract
The ability to proliferate is a common feature of most T-cell populations. However, proliferation follows different cell-cycle dynamics and is coupled to different functional outcomes according to T-cell subsets. Whether the mitotic machineries supporting these qualitatively distinct proliferative responses are identical remains unknown. Here, we show that disruption of the microtubule-associated protein LIS1 in mouse models leads to proliferative defects associated with a blockade of T-cell development after β-selection and of peripheral CD4+ T-cell expansion after antigen priming. In contrast, cell divisions in CD8+ T cells occurred independently of LIS1 following T-cell antigen receptor stimulation, although LIS1 was required for proliferation elicited by pharmacological activation. In thymocytes and CD4+ T cells, LIS1 deficiency did not affect signaling events leading to activation but led to an interruption of proliferation after the initial round of division and to p53-induced cell death. Proliferative defects resulted from a mitotic failure, characterized by the presence of extra-centrosomes and the formation of multipolar spindles, causing abnormal chromosomes congression during metaphase and separation during telophase. LIS1 was required to stabilize dynein/dynactin complexes, which promote chromosome attachment to mitotic spindles and ensure centrosome integrity. Together, these results suggest that proliferative responses are supported by distinct mitotic machineries across T-cell subsets.
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Affiliation(s)
- Jérémy Argenty
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), INSERM UMR1291, CNRS UMR5051, University Toulouse IIIToulouseFrance
| | - Nelly Rouquié
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), INSERM UMR1291, CNRS UMR5051, University Toulouse IIIToulouseFrance
| | - Cyrielle Bories
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), INSERM UMR1291, CNRS UMR5051, University Toulouse IIIToulouseFrance
| | - Suzanne Mélique
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), INSERM UMR1291, CNRS UMR5051, University Toulouse IIIToulouseFrance
| | - Valérie Duplan-Eche
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), INSERM UMR1291, CNRS UMR5051, University Toulouse IIIToulouseFrance
| | - Abdelhadi Saoudi
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), INSERM UMR1291, CNRS UMR5051, University Toulouse IIIToulouseFrance
| | - Nicolas Fazilleau
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), INSERM UMR1291, CNRS UMR5051, University Toulouse IIIToulouseFrance
| | - Renaud Lesourne
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), INSERM UMR1291, CNRS UMR5051, University Toulouse IIIToulouseFrance
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8
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Renaud CCN, Bidère N. Function of Centriolar Satellites and Regulation by Post-Translational Modifications. Front Cell Dev Biol 2021; 9:780502. [PMID: 34888313 PMCID: PMC8650133 DOI: 10.3389/fcell.2021.780502] [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: 09/21/2021] [Accepted: 11/09/2021] [Indexed: 11/13/2022] Open
Abstract
Centriolar satellites are small membrane-less granules that gravitate around the centrosome. Recent advances in defining the satellite proteome and interactome have unveiled hundreds of new satellite components thus illustrating the complex nature of these particles. Although initially linked to the homeostasis of centrosome and the formation of primary cilia, these composite and highly dynamic structures appear to participate in additional cellular processes, such as proteostasis, autophagy, and cellular stress. In this review, we first outline the main features and many roles of centriolar satellites. We then discuss how post-translational modifications, such as phosphorylation and ubiquitination, shape their composition and functions. This is of particular interest as interfering with these processes may provide ways to manipulate these structures.
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Affiliation(s)
| | - Nicolas Bidère
- CNRS, CRCINA, INSERM, Université de Nantes, Nantes, France
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9
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Check JH, Check DL. A Hypothetical Model Suggesting Some Possible Ways That the Progesterone Receptor May Be Involved in Cancer Proliferation. Int J Mol Sci 2021; 22:ijms222212351. [PMID: 34830233 PMCID: PMC8621132 DOI: 10.3390/ijms222212351] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 11/05/2021] [Accepted: 11/08/2021] [Indexed: 12/22/2022] Open
Abstract
Cancer and the fetal-placental semi-allograft share certain characteristics, e.g., rapid proliferation, the capacity to invade normal tissue, and, related to the presence of antigens foreign to the host, the need to evade immune surveillance. Many present-day methods to treat cancer use drugs that can block a key molecule that is important for one or more of these characteristics and thus reduce side effects. The ideal molecule would be one that is essential for both the survival of the fetus and malignant tumor, but not needed for normal cells. There is a potential suitable candidate, the progesterone induced blocking factor (PIBF). The parent 90 kilodalton (kDa) form seems to be required for cell-cycle regulation, required by both the fetal-placental unit and malignant tumors. The parent form may be converted to splice variants that help both the fetus and tumors escape immune surveillance, especially in the fetal and tumor microenvironment. Evidence suggests that membrane progesterone receptors are involved in PIBF production, and indeed there has been anecdotal evidence that progesterone receptor antagonists, e.g., mifepristone, can significantly improve longevity and quality of life, with few side effects.
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Affiliation(s)
- Jerome H. Check
- Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology & Infertility, Cooper Medical School of Rowan University, Camden, NJ 08103, USA
- Cooper Institute for Reproductive Hormonal Disorders, P.C., Mt. Laurel, NJ 08054, USA;
- Correspondence: ; Tel.: +1-215-635-4156; Fax: +1-215-635-2304
| | - Diane L. Check
- Cooper Institute for Reproductive Hormonal Disorders, P.C., Mt. Laurel, NJ 08054, USA;
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10
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Kumar D, Rains A, Herranz-Pérez V, Lu Q, Shi X, Swaney DL, Stevenson E, Krogan NJ, Huang B, Westlake C, Garcia-Verdugo JM, Yoder BK, Reiter JF. A ciliopathy complex builds distal appendages to initiate ciliogenesis. J Cell Biol 2021; 220:e202011133. [PMID: 34241634 PMCID: PMC8276316 DOI: 10.1083/jcb.202011133] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 05/12/2021] [Accepted: 06/14/2021] [Indexed: 12/16/2022] Open
Abstract
Cells inherit two centrioles, the older of which is uniquely capable of generating a cilium. Using proteomics and superresolved imaging, we identify a module that we term DISCO (distal centriole complex). The DISCO components CEP90, MNR, and OFD1 underlie human ciliopathies. This complex localizes to both distal centrioles and centriolar satellites, proteinaceous granules surrounding centrioles. Cells and mice lacking CEP90 or MNR do not generate cilia, fail to assemble distal appendages, and do not transduce Hedgehog signals. Disrupting the satellite pools does not affect distal appendage assembly, indicating that it is the centriolar populations of MNR and CEP90 that are critical for ciliogenesis. CEP90 recruits the most proximal known distal appendage component, CEP83, to root distal appendage formation, an early step in ciliogenesis. In addition, MNR, but not CEP90, restricts centriolar length by recruiting OFD1. We conclude that DISCO acts at the distal centriole to support ciliogenesis by restraining centriole length and assembling distal appendages, defects in which cause human ciliopathies.
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Affiliation(s)
- Dhivya Kumar
- Department of Biochemistry and Biophysics, Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA
| | - Addison Rains
- Department of Cell, Developmental, and Integrative Biology, University of Alabama, Birmingham, AL
| | - Vicente Herranz-Pérez
- Laboratory of Comparative Neurobiology, Cavanilles Institute of Biodiversity and Evolutionary Biology, University of Valencia, Biomedical Research Networking Center on Neurodegenerative Diseases, Valencia, Spain
- Predepartamental Unit of Medicine, Faculty of Health Sciences, Universitat Jaume I, Castelló de la Plana, Spain
| | - Quanlong Lu
- Laboratory of Cellular and Developmental Signaling, Center for Cancer Research, National Cancer Institute Frederick, Frederick, MD
| | - Xiaoyu Shi
- Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, CA
- Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA
| | - Danielle L. Swaney
- Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA
- California Institute for Quantitative Biosciences, Quantitative Biosciences Institute, University of California, San Francisco, San Francisco, CA
- J. David Gladstone Institutes, San Francisco, CA
| | - Erica Stevenson
- Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA
- California Institute for Quantitative Biosciences, Quantitative Biosciences Institute, University of California, San Francisco, San Francisco, CA
- J. David Gladstone Institutes, San Francisco, CA
| | - Nevan J. Krogan
- Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA
- California Institute for Quantitative Biosciences, Quantitative Biosciences Institute, University of California, San Francisco, San Francisco, CA
- J. David Gladstone Institutes, San Francisco, CA
| | - Bo Huang
- Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, CA
- Chan Zuckerberg Biohub, San Francisco, CA
| | - Christopher Westlake
- Laboratory of Cellular and Developmental Signaling, Center for Cancer Research, National Cancer Institute Frederick, Frederick, MD
| | - Jose Manuel Garcia-Verdugo
- Laboratory of Comparative Neurobiology, Cavanilles Institute of Biodiversity and Evolutionary Biology, University of Valencia, Biomedical Research Networking Center on Neurodegenerative Diseases, Valencia, Spain
| | - Bradley K. Yoder
- Department of Cell, Developmental, and Integrative Biology, University of Alabama, Birmingham, AL
| | - Jeremy F. Reiter
- Department of Biochemistry and Biophysics, Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA
- Chan Zuckerberg Biohub, San Francisco, CA
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11
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Gaudin N, Martin Gil P, Azimzadeh J. DISCO is key to successful centriole maturation. J Cell Biol 2021; 220:212560. [PMID: 34402855 PMCID: PMC8374877 DOI: 10.1083/jcb.202107033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Centriole maturation is essential for ciliogenesis, but which proteins and how they regulate ciliary assembly is unclear. In this issue, Kumar et al. (2021. J. Cell Biol. https://doi.org/10.1083/jcb.202011133) shed light on this process by identifying a ciliopathy complex at the distal mother centriole that restrains centriole length and supports the formation of distal appendages.
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Affiliation(s)
- Noémie Gaudin
- Université de Paris, Centre national de la recherche scientifique, Institut Jacques Monod, Paris, France
| | - Paula Martin Gil
- Université de Paris, Centre national de la recherche scientifique, Institut Jacques Monod, Paris, France
| | - Juliette Azimzadeh
- Université de Paris, Centre national de la recherche scientifique, Institut Jacques Monod, Paris, France
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12
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Sin S, Choi HM, Lim J, Kim J, Bak SH, Choi SS, Park J, Lee JH, Oh YM, Lee MK, Hobbs BD, Cho MH, Silverman EK, Kim WJ. A genome-wide association study of quantitative computed tomographic emphysema in Korean populations. Sci Rep 2021; 11:16692. [PMID: 34404834 PMCID: PMC8371078 DOI: 10.1038/s41598-021-95887-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 06/28/2021] [Indexed: 11/18/2022] Open
Abstract
Emphysema is an important feature of chronic obstructive pulmonary disease (COPD). Genetic factors likely affect emphysema pathogenesis, but this question has predominantly been studied in those of European ancestry. In this study, we sought to determine genetic components of emphysema severity and characterize the potential function of the associated loci in Korean population. We performed a genome-wide association study (GWAS) on quantitative emphysema in subjects with or without COPD from two Korean COPD cohorts. We investigated the functional consequences of the loci using epigenetic annotation and gene expression data. We also compared our GWAS results with an epigenome-wide association study and previous differential gene expression analysis. In total, 548 subjects (476 [86.9%] male) including 514 COPD patients were evaluated. We identified one genome-wide significant SNP (P < 5.0 × 10-8), rs117084279, near PIBF1. We identified an additional 57 SNPs (P < 5.0 × 10-6) associated with emphysema in all subjects, and 106 SNPs (P < 5.0 × 10-6) in COPD patients. Of these candidate SNPs, 2 (rs12459249, rs11667314) near CYP2A6 were expression quantitative trait loci in lung tissue and a SNP (rs11214944) near NNMT was an expression quantitative trait locus in whole blood. Of note, rs11214944 was in linkage disequilibrium with variants in enhancer histone marks in lung tissue. Several genes near additional SNPs were identified in our previous EWAS study with nominal level of significance. We identified a novel SNP associated with quantitative emphysema on CT. Including the novel SNP, several candidate SNPs in our study may provide clues to the genetic etiology of emphysema in Asian populations. Further research and validation of the loci will help determine the genetic factors for the development of emphysema.
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Affiliation(s)
- Sooim Sin
- grid.412010.60000 0001 0707 9039Department of Internal Medicine, School of Medicine, Kangwon National University, Chuncheon, Republic of Korea
| | - Hye-Mi Choi
- grid.412010.60000 0001 0707 9039Division of Biomedical Convergence, College of Biomedical Science, and Institute of Bioscience & Biotechnology, Kangwon National University, Chuncheon, Republic of Korea
| | - Jiwon Lim
- grid.412010.60000 0001 0707 9039Division of Biomedical Convergence, College of Biomedical Science, and Institute of Bioscience & Biotechnology, Kangwon National University, Chuncheon, Republic of Korea
| | - Jeeyoung Kim
- grid.412010.60000 0001 0707 9039Department of Internal Medicine, School of Medicine, Kangwon National University, Chuncheon, Republic of Korea
| | - So Hyeon Bak
- grid.412010.60000 0001 0707 9039Department of Radiology, Kangwon National University Hospital, Kangwon National University School of Medicine, Chuncheon, Republic of Korea
| | - Sun Shim Choi
- grid.412010.60000 0001 0707 9039Division of Biomedical Convergence, College of Biomedical Science, and Institute of Bioscience & Biotechnology, Kangwon National University, Chuncheon, Republic of Korea
| | - Jinkyeong Park
- grid.470090.a0000 0004 1792 3864Department of Internal Medicine, Dongguk University Ilsan Hospital, Goyang, Republic of Korea
| | - Jin Hwa Lee
- grid.255649.90000 0001 2171 7754Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, College of Medicine, Ewha Womans University, Seoul, Korea
| | - Yeon-Mok Oh
- grid.267370.70000 0004 0533 4667Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Mi Kyeong Lee
- grid.280664.e0000 0001 2110 5790Epidemiology Branch, Division of Intramural Research, Department of Health and Human Services, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC USA
| | - Brian D. Hobbs
- grid.38142.3c000000041936754XChanning Division of Network Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA USA ,grid.38142.3c000000041936754XDivision of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA USA
| | - Michael H. Cho
- grid.38142.3c000000041936754XChanning Division of Network Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA USA ,grid.38142.3c000000041936754XDivision of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA USA
| | - Edwin K. Silverman
- grid.38142.3c000000041936754XChanning Division of Network Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA USA ,grid.38142.3c000000041936754XDivision of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA USA
| | - Woo Jin Kim
- Department of Internal Medicine, School of Medicine, Kangwon National University, Chuncheon, Republic of Korea.
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13
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Piccinni MP, Raghupathy R, Saito S, Szekeres-Bartho J. Cytokines, Hormones and Cellular Regulatory Mechanisms Favoring Successful Reproduction. Front Immunol 2021; 12:717808. [PMID: 34394125 PMCID: PMC8355694 DOI: 10.3389/fimmu.2021.717808] [Citation(s) in RCA: 60] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 07/06/2021] [Indexed: 01/07/2023] Open
Abstract
Its semi-allogeneic nature renders the conceptus vulnerable to attack by the maternal immune system. Several protective mechanisms operate during gestation to correct the harmful effects of anti-fetal immunity and to support a healthy pregnancy outcome. Pregnancy is characterized by gross alterations in endocrine functions. Progesterone is indispensable for pregnancy and humans, and it affects immune functions both directly and via mediators. The progesterone-induced mediator - PIBF - acts in favor of Th2-type immunity, by increasing Th2 type cytokines production. Except for implantation and parturition, pregnancy is characterized by a Th2-dominant cytokine pattern. Progesterone and the orally-administered progestogen dydrogesterone upregulate the production of Th2-type cytokines and suppress the production of Th1 and Th17 cytokine production in vitro. This is particularly relevant to the fact that the Th1-type cytokines TNF-α and IFN-γ and the Th17 cytokine IL-17 have embryotoxic and anti-trophoblast activities. These cytokine-modulating effects and the PIBF-inducing capabilities of dydrogesterone may contribute to the demonstrated beneficial effects of dydrogesterone in recurrent spontaneous miscarriage and threatened miscarriage. IL-17 and IL-22 produced by T helper cells are involved in allograft rejection, and therefore could account for the rejection of paternal HLA-C-expressing trophoblast. Th17 cells (producing IL-17 and IL-22) and Th22 cells (producing IL-22) exhibit plasticity and could produce IL-22 and IL-17 in association with Th2-type cytokines or with Th1-type cytokines. IL-17 and IL-22 producing Th cells are not harmful for the conceptus, if they also produce IL-4. Another important protective mechanism is connected with the expansion and action of regulatory T cells, which play a major role in the induction of tolerance both in pregnant women and in tumour-bearing patients. Clonally-expanded Treg cells increase at the feto-maternal interface and in tumour-infiltrating regions. While in cancer patients, clonally-expanded Treg cells are present in peripheral blood, they are scarce in pregnancy blood, suggesting that fetal antigen-specific tolerance is restricted to the foeto-maternal interface. The significance of Treg cells in maintaining a normal materno-foetal interaction is underlined by the fact that miscarriage is characterized by a decreased number of total effector Treg cells, and the number of clonally-expanded effector Treg cells is markedly reduced in preeclampsia. In this review we present an overview of the above mechanisms, attempt to show how they are connected, how they operate during normal gestation and how their failure might lead to pregnancy pathologies.
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Affiliation(s)
- Marie-Pierre Piccinni
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Raj Raghupathy
- Department of Microbiology, Faculty of Medicine, Kuwait University, Kuwait, Kuwait
| | - Shigeru Saito
- Department of Obstetrics and Gynecology, University of Toyama, Toyama, Japan
| | - Julia Szekeres-Bartho
- Department of Medical Biology, Medical School, Pecs University, Pecs, Hungary.,János Szentágothai Research Centre, Pecs University, Pecs, Hungary.,Endocrine Studies, Centre of Excellence, Pecs University, Pecs, Hungary.,MTA - PTE Human Reproduction Research Group, Pecs, Hungary.,National Laboratory for Human Reproduction, Pecs University, Pecs, Hungary
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14
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Zhou M, Xu H, Zhang D, Si C, Zhou X, Zhao H, Liu Q, Xu B, Zhang A. Decreased PIBF1/IL6/p-STAT3 during the mid-secretory phase inhibits human endometrial stromal cell proliferation and decidualization. J Adv Res 2020; 30:15-25. [PMID: 34026283 PMCID: PMC8132213 DOI: 10.1016/j.jare.2020.09.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 08/16/2020] [Accepted: 09/02/2020] [Indexed: 12/20/2022] Open
Abstract
PIBF1 levels peaked in the mid-secretory phase of endometrium. PIBF1 expression decreased in the mid-secretory endometrium of RIF patients. PIBF1 regulated HESC proliferation and decidualization via IL6/p-STAT3 signaling. The IL6/p-STAT3, Ki-67, prolactin, and IGFBP1 levels were lower in RIF patients. Low PIBF1 expression may account for poor endometrial receptivity in RIF patients.
Introduction Recurrent implantation failure (RIF) is a challenging problem of assisted reproductive technology that arises mainly due to inadequate endometrial receptivity and its pathogenesis is still unclear. Objectives In this study, we conducted the first investigation of the effect of decreased PIBF1 expression in mid-secretory phase on endometrial receptivity in patients with RIF. Methods Microarray assay, reverse transcriptase-quantitative polymerase chain reaction, western blot, and in-vitro experiments were conducted. Results The results showed that progesterone-induced blocking factor 1 (PIBF1) expression was highest in the mid-secretory endometrium in control subjects, but was significantly lower in RIF patients. In Ishikawa and human endometrial stromal cells (HESCs), rather than human endometrial epithelial cells, PIBF1 knockdown significantly downregulated cell proliferation and the levels of interleukin 6 (IL6) and phosphorylated signal transducer and activator of transcription-3 (p-STAT3). Besides, in HESCs, the levels of IL6, p-STAT3, prolactin and insulin-like growth factor binding-protein-1 (IGFBP1) decreased after PIBF1 knockdown during in-vitro decidualization. All these cellular changes could be notably restored by PIBF1 or IL6 overexpression. Consistent with our findings with PIBF1, the levels of IL6, p-STAT3, ki-67, prolactin, and IGFBP1 in the mid-secretory endometrium were notably lower in patients with RIF compared with controls. Conclusion In summary, in the mid-secretory phase, decreased expression of PIBF1, IL6, and p-STAT3 inhibited HESC proliferation and decidualization, which is of theoretical and clinical importance for future research and clinical-treatment strategies.
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Affiliation(s)
- Mingjuan Zhou
- Reproductive Medical Center, Department of Obstetrics and Gynecology of Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, 197 Ruijin 2nd Road, Shanghai 200025, China
| | - Huihui Xu
- Reproductive Medical Center, Department of Obstetrics and Gynecology of Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, 197 Ruijin 2nd Road, Shanghai 200025, China
| | - Dan Zhang
- Reproductive Medical Center, Department of Obstetrics and Gynecology of Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, 197 Ruijin 2nd Road, Shanghai 200025, China
| | - Chenchen Si
- Reproductive Medical Center, Department of Obstetrics and Gynecology of Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, 197 Ruijin 2nd Road, Shanghai 200025, China
| | - Xiaowei Zhou
- Reproductive Medical Center, Department of Obstetrics and Gynecology of Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, 197 Ruijin 2nd Road, Shanghai 200025, China
| | - Hui Zhao
- Key Laboratory for Regenerative Medicine, Ministry of Education, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Qiang Liu
- Shanghai Key Laboratory of Reproductive Medicine, Department of Histoembryology, Genetics and Developmental Biology, School of Medicine, Shanghai Jiao Tong University, 280 South Chongqing Road, Shanghai 200025, China
| | - Bufang Xu
- Reproductive Medical Center, Department of Obstetrics and Gynecology of Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, 197 Ruijin 2nd Road, Shanghai 200025, China
| | - Aijun Zhang
- Reproductive Medical Center, Department of Obstetrics and Gynecology of Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, 197 Ruijin 2nd Road, Shanghai 200025, China.,Shanghai Key Laboratory of Reproductive Medicine, Department of Histoembryology, Genetics and Developmental Biology, School of Medicine, Shanghai Jiao Tong University, 280 South Chongqing Road, Shanghai 200025, China
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15
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Prosser SL, Pelletier L. Centriolar satellite biogenesis and function in vertebrate cells. J Cell Sci 2020; 133:133/1/jcs239566. [PMID: 31896603 DOI: 10.1242/jcs.239566] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Centriolar satellites are non-membranous cytoplasmic granules that concentrate in the vicinity of the centrosome, the major microtubule-organizing centre (MTOC) in animal cells. Originally assigned as conduits for the transport of proteins towards the centrosome and primary cilium, the complexity of satellites is starting to become apparent. Recent studies defined the satellite proteome and interactomes, placing hundreds of proteins from diverse pathways in association with satellites. In addition, studies on cells lacking satellites have revealed that the centrosome can assemble in their absence, whereas studies on acentriolar cells have demonstrated that satellite assembly is independent from an intact MTOC. A role for satellites in ciliogenesis is well established; however, their contribution to other cellular functions is poorly understood. In this Review, we discuss the developments in our understanding of centriolar satellite assembly and function, and why satellites are rapidly becoming established as governors of multiple cellular processes. We highlight the composition and biogenesis of satellites and what is known about the regulation of these aspects. Furthermore, we discuss the evolution from thinking of satellites as mere facilitators of protein trafficking to the centrosome to thinking of them being key regulators of protein localization and cellular proteostasis for a diverse set of pathways, making them of broader interest to fields beyond those focused on centrosomes and ciliogenesis.
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Affiliation(s)
- Suzanna L Prosser
- Lunenfeld-Tanenbaum Research Institute, Sinai Health System, 600 University Avenue, Toronto, Ontario M5G 1X5, Canada
| | - Laurence Pelletier
- Lunenfeld-Tanenbaum Research Institute, Sinai Health System, 600 University Avenue, Toronto, Ontario M5G 1X5, Canada .,Department of Molecular Genetics, University of Toronto, Toronto, Ontario M5S 1A8, Canada
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16
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Holdgaard SG, Cianfanelli V, Pupo E, Lambrughi M, Lubas M, Nielsen JC, Eibes S, Maiani E, Harder LM, Wesch N, Foged MM, Maeda K, Nazio F, de la Ballina LR, Dötsch V, Brech A, Frankel LB, Jäättelä M, Locatelli F, Barisic M, Andersen JS, Bekker-Jensen S, Lund AH, Rogov VV, Papaleo E, Lanzetti L, De Zio D, Cecconi F. Selective autophagy maintains centrosome integrity and accurate mitosis by turnover of centriolar satellites. Nat Commun 2019; 10:4176. [PMID: 31519908 PMCID: PMC6744468 DOI: 10.1038/s41467-019-12094-9] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 08/21/2019] [Indexed: 12/21/2022] Open
Abstract
The centrosome is the master orchestrator of mitotic spindle formation and chromosome segregation in animal cells. Centrosome abnormalities are frequently observed in cancer, but little is known of their origin and about pathways affecting centrosome homeostasis. Here we show that autophagy preserves centrosome organization and stability through selective turnover of centriolar satellite components, a process we termed doryphagy. Autophagy targets the satellite organizer PCM1 by interacting with GABARAPs via a C-terminal LIR motif. Accordingly, autophagy deficiency results in accumulation of large abnormal centriolar satellites and a resultant dysregulation of centrosome composition. These alterations have critical impact on centrosome stability and lead to mitotic centrosome fragmentation and unbalanced chromosome segregation. Our findings identify doryphagy as an important centrosome-regulating pathway and bring mechanistic insights to the link between autophagy dysfunction and chromosomal instability. In addition, we highlight the vital role of centriolar satellites in maintaining centrosome integrity.
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Affiliation(s)
- Søs Grønbæk Holdgaard
- Cell Stress and Survival Unit, Center for Autophagy, Recycling and Disease (CARD), Danish Cancer Society Research Center, Copenhagen, 2100, Denmark
| | - Valentina Cianfanelli
- Cell Stress and Survival Unit, Center for Autophagy, Recycling and Disease (CARD), Danish Cancer Society Research Center, Copenhagen, 2100, Denmark
| | - Emanuela Pupo
- Department of Oncology, University of Torino Medical School, Turin, 10100, Italy
- Candiolo Cancer Institute, FPO - IRCCS, Candiolo, 10060, Italy
| | - Matteo Lambrughi
- Computational Biology Laboratory, Center for Autophagy, Recycling and Disease (CARD), Danish Cancer Society Research Center, Copenhagen, 2100, Denmark
| | - Michal Lubas
- Biotech Research & Innovation Centre, University of Copenhagen, Copenhagen, 2200, Denmark
| | - Julie C Nielsen
- Center for Healthy Aging, University of Copenhagen, Copenhagen, 2200, Denmark
| | - Susana Eibes
- Cell Division Laboratory, Danish Cancer Society Research Center, Copenhagen, 2100, Denmark
- Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen, 2200, Denmark
| | - Emiliano Maiani
- Cell Stress and Survival Unit, Center for Autophagy, Recycling and Disease (CARD), Danish Cancer Society Research Center, Copenhagen, 2100, Denmark
- Computational Biology Laboratory, Center for Autophagy, Recycling and Disease (CARD), Danish Cancer Society Research Center, Copenhagen, 2100, Denmark
| | - Lea M Harder
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, 5230, Denmark
| | - Nicole Wesch
- Institute of Biophysical Chemistry and Center for Biomolecular Magnetic Resonance, Goethe University Frankfurt, 60438, Frankfurt, Germany
| | - Mads Møller Foged
- Cell Death and Metabolism Unit, Center for Autophagy, Recycling and Disease (CARD), Danish Cancer Society Research Center, Copenhagen, 2100, Denmark
| | - Kenji Maeda
- Cell Death and Metabolism Unit, Center for Autophagy, Recycling and Disease (CARD), Danish Cancer Society Research Center, Copenhagen, 2100, Denmark
| | - Francesca Nazio
- Department of Pediatric Hemato-Oncology and Cell and Gene therapy, IRCCS Bambino Gesù Children's Hospital, Rome, 00143, Italy
| | - Laura R de la Ballina
- Department of Molecular Medicine, Institute of Basic Medical Sciences and Centre for Cancer Cell Reprogramming, Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, 0317, Oslo, Norway
| | - Volker Dötsch
- Institute of Biophysical Chemistry and Center for Biomolecular Magnetic Resonance, Goethe University Frankfurt, 60438, Frankfurt, Germany
| | - Andreas Brech
- Department of Molecular Cell Biology, Institute for Cancer Research, Oslo University Hospital, 0379, Oslo, Norway
- Centre for Cancer Cell Reprogramming, Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, 0379, Oslo, Norway
| | - Lisa B Frankel
- Biotech Research & Innovation Centre, University of Copenhagen, Copenhagen, 2200, Denmark
- RNA and Autophagy group, Danish Cancer Society Research Center, Copenhagen, 2100, Denmark
| | - Marja Jäättelä
- Cell Death and Metabolism Unit, Center for Autophagy, Recycling and Disease (CARD), Danish Cancer Society Research Center, Copenhagen, 2100, Denmark
- Department of Cellular and Molecular Medicine, Faculty of Health Sciences, University of Copenhagen, Copenhagen, 2200, Denmark
| | - Franco Locatelli
- Department of Pediatric Hemato-Oncology and Cell and Gene therapy, IRCCS Bambino Gesù Children's Hospital, Rome, 00143, Italy
- Department of Gynecology/Obstetrics and Pediatrics, Sapienza University of Rome, Rome, 00185, Italy
| | - Marin Barisic
- Cell Division Laboratory, Danish Cancer Society Research Center, Copenhagen, 2100, Denmark
- Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen, 2200, Denmark
| | - Jens S Andersen
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, 5230, Denmark
| | - Simon Bekker-Jensen
- Center for Healthy Aging, University of Copenhagen, Copenhagen, 2200, Denmark
| | - Anders H Lund
- Biotech Research & Innovation Centre, University of Copenhagen, Copenhagen, 2200, Denmark
| | - Vladimir V Rogov
- Institute of Biophysical Chemistry and Center for Biomolecular Magnetic Resonance, Goethe University Frankfurt, 60438, Frankfurt, Germany
| | - Elena Papaleo
- Computational Biology Laboratory, Center for Autophagy, Recycling and Disease (CARD), Danish Cancer Society Research Center, Copenhagen, 2100, Denmark
- Translational Disease Systems Biology, Faculty of Health and Medical Sciences, Novo Nordisk Foundation Center for Protein Research University of Copenhagen, Copenhagen, 2100, Denmark
| | - Letizia Lanzetti
- Department of Oncology, University of Torino Medical School, Turin, 10100, Italy
- Candiolo Cancer Institute, FPO - IRCCS, Candiolo, 10060, Italy
| | - Daniela De Zio
- Cell Stress and Survival Unit, Center for Autophagy, Recycling and Disease (CARD), Danish Cancer Society Research Center, Copenhagen, 2100, Denmark
| | - Francesco Cecconi
- Cell Stress and Survival Unit, Center for Autophagy, Recycling and Disease (CARD), Danish Cancer Society Research Center, Copenhagen, 2100, Denmark.
- Department of Pediatric Hemato-Oncology and Cell and Gene therapy, IRCCS Bambino Gesù Children's Hospital, Rome, 00143, Italy.
- Department of Biology, University of Tor Vergata, Rome, 00133, Italy.
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17
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Quarantotti V, Chen J, Tischer J, Gonzalez Tejedo C, Papachristou EK, D'Santos CS, Kilmartin JV, Miller ML, Gergely F. Centriolar satellites are acentriolar assemblies of centrosomal proteins. EMBO J 2019; 38:e101082. [PMID: 31304626 PMCID: PMC6627235 DOI: 10.15252/embj.2018101082] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 04/24/2019] [Accepted: 05/06/2019] [Indexed: 12/02/2022] Open
Abstract
Centrioles are core structural elements of both centrosomes and cilia. Although cytoplasmic granules called centriolar satellites have been observed around these structures, lack of a comprehensive inventory of satellite proteins impedes our understanding of their ancestry. To address this, we performed mass spectrometry (MS)-based proteome profiling of centriolar satellites obtained by affinity purification of their key constituent, PCM1, from sucrose gradient fractions. We defined an interactome consisting of 223 proteins, which showed striking enrichment in centrosome components. The proteome also contained new structural and regulatory factors with roles in ciliogenesis. Quantitative MS on whole-cell and centriolar satellite proteomes of acentriolar cells was performed to reveal dependencies of satellite composition on intact centrosomes. Although most components remained associated with PCM1 in acentriolar cells, reduced cytoplasmic and satellite levels were observed for a subset of centrosomal proteins. These results demonstrate that centriolar satellites and centrosomes form independently but share a substantial fraction of their proteomes. Dynamic exchange of proteins between these organelles could facilitate their adaptation to changing cellular environments during development, stress response and tissue homeostasis.
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Affiliation(s)
- Valentina Quarantotti
- Cancer Research UK Cambridge InstituteLi Ka Shing CentreUniversity of CambridgeCambridgeUK
| | - Jia‐Xuan Chen
- Cancer Research UK Cambridge InstituteLi Ka Shing CentreUniversity of CambridgeCambridgeUK
| | - Julia Tischer
- Cancer Research UK Cambridge InstituteLi Ka Shing CentreUniversity of CambridgeCambridgeUK
| | - Carmen Gonzalez Tejedo
- Cancer Research UK Cambridge InstituteLi Ka Shing CentreUniversity of CambridgeCambridgeUK
| | | | - Clive S D'Santos
- Cancer Research UK Cambridge InstituteLi Ka Shing CentreUniversity of CambridgeCambridgeUK
| | - John V Kilmartin
- MRC Laboratory of Molecular BiologyCambridge Biomedical CampusCambridgeUK
| | - Martin L Miller
- Cancer Research UK Cambridge InstituteLi Ka Shing CentreUniversity of CambridgeCambridgeUK
| | - Fanni Gergely
- Cancer Research UK Cambridge InstituteLi Ka Shing CentreUniversity of CambridgeCambridgeUK
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18
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Gheiratmand L, Coyaud E, Gupta GD, Laurent EMN, Hasegan M, Prosser SL, Gonçalves J, Raught B, Pelletier L. Spatial and proteomic profiling reveals centrosome-independent features of centriolar satellites. EMBO J 2019; 38:e101109. [PMID: 31304627 PMCID: PMC6627244 DOI: 10.15252/embj.2018101109] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Revised: 05/09/2019] [Accepted: 05/10/2019] [Indexed: 12/19/2022] Open
Abstract
Centriolar satellites are small electron-dense granules that cluster in the vicinity of centrosomes. Satellites have been implicated in multiple critical cellular functions including centriole duplication, centrosome maturation, and ciliogenesis, but their precise composition and assembly properties have remained poorly explored. Here, we perform in vivo proximity-dependent biotin identification (BioID) on 22 human satellite proteins, to identify 2,113 high-confidence interactions among 660 unique polypeptides. Mining this network, we validate six additional satellite components. Analysis of the satellite interactome, combined with subdiffraction imaging, reveals the existence of multiple unique microscopically resolvable satellite populations that display distinct protein interaction profiles. We further show that loss of satellites in PCM1-depleted cells results in a dramatic change in the satellite interaction landscape. Finally, we demonstrate that satellite composition is largely unaffected by centriole depletion or disruption of microtubules, indicating that satellite assembly is centrosome-independent. Together, our work offers the first systematic spatial and proteomic profiling of human centriolar satellites and paves the way for future studies aimed at better understanding the biogenesis and function(s) of these enigmatic structures.
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Affiliation(s)
- Ladan Gheiratmand
- Lunenfeld‐Tanenbaum Research InstituteMount Sinai HospitalTorontoONCanada
| | - Etienne Coyaud
- Princess Margaret Cancer CentreUniversity Health NetworkTorontoONCanada
| | - Gagan D Gupta
- Lunenfeld‐Tanenbaum Research InstituteMount Sinai HospitalTorontoONCanada
- Present address:
Department of Chemistry and BiologyRyerson UniversityTorontoONCanada
| | | | - Monica Hasegan
- Lunenfeld‐Tanenbaum Research InstituteMount Sinai HospitalTorontoONCanada
| | - Suzanna L Prosser
- Lunenfeld‐Tanenbaum Research InstituteMount Sinai HospitalTorontoONCanada
| | - João Gonçalves
- Lunenfeld‐Tanenbaum Research InstituteMount Sinai HospitalTorontoONCanada
| | - Brian Raught
- Princess Margaret Cancer CentreUniversity Health NetworkTorontoONCanada
- Department of Medical BiophysicsUniversity of TorontoTorontoONCanada
| | - Laurence Pelletier
- Lunenfeld‐Tanenbaum Research InstituteMount Sinai HospitalTorontoONCanada
- Department of Molecular GeneticsUniversity of TorontoTorontoONCanada
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19
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Ott T, Kaufmann L, Granzow M, Hinderhofer K, Bartram CR, Theiß S, Seitz A, Paramasivam N, Schulz A, Moog U, Blum M, Evers CM. The Frog Xenopus as a Model to Study Joubert Syndrome: The Case of a Human Patient With Compound Heterozygous Variants in PIBF1. Front Physiol 2019; 10:134. [PMID: 30858804 PMCID: PMC6397843 DOI: 10.3389/fphys.2019.00134] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 02/04/2019] [Indexed: 12/16/2022] Open
Abstract
Joubert syndrome (JS) is a congenital autosomal-recessive or—in rare cases–X-linked inherited disease. The diagnostic hallmark of the so-called molar tooth sign describes the morphological manifestation of the mid- and hind-brain in axial brain scans. Affected individuals show delayed development, intellectual disability, ataxia, hyperpnea, sleep apnea, abnormal eye, and tongue movements as well as hypotonia. At the cellular level, JS is associated with the compromised biogenesis of sensory cilia, which identifies JS as a member of the large group of ciliopathies. Here we report on the identification of novel compound heterozygous variants (p.Y503C and p.Q485*) in the centrosomal gene PIBF1 in a patient with JS via trio whole exome sequencing. We have studied the underlying disease mechanism in the frog Xenopus, which offers fast assessment of cilia functions in a number of embryological contexts. Morpholino oligomer (MO) mediated knockdown of the orthologous Xenopus pibf1 gene resulted in defective mucociliary clearance in the larval epidermis, due to reduced cilia numbers and motility on multiciliated cells. To functionally assess patient alleles, mutations were analyzed in the larval skin: the p.Q485* nonsense mutation resulted in a disturbed localization of PIBF1 to the ciliary base. This mutant failed to rescue the ciliation phenotype following knockdown of endogenous pibf1. In contrast, the missense variant p.Y503C resulted in attenuated rescue capacity compared to the wild type allele. Based on these results, we conclude that in the case of this patient, JS is the result of a pathogenic combination of an amorphic and a hypomorphic PIBF1 allele. Our study underscores the versatility of the Xenopus model to study ciliopathies such as JS in a rapid and cost-effective manner, which should render this animal model attractive for future studies of human ciliopathies.
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Affiliation(s)
- Tim Ott
- Institute of Zoology, University of Hohenheim, Stuttgart, Germany
| | - Lilian Kaufmann
- Institute of Human Genetics, Heidelberg University, Heidelberg, Germany
| | - Martin Granzow
- Institute of Human Genetics, Heidelberg University, Heidelberg, Germany
| | | | - Claus R Bartram
- Institute of Human Genetics, Heidelberg University, Heidelberg, Germany
| | - Susanne Theiß
- Institute of Human Genetics, Heidelberg University, Heidelberg, Germany
| | - Angelika Seitz
- Department of Neuroradiology, University Hospital Heidelberg, Heidelberg, Germany
| | - Nagarajan Paramasivam
- Medical Faculty Heidelberg, Heidelberg University, Heidelberg, Germany.,Division of Theoretical Bioinformatics, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Angela Schulz
- Genomics & Proteomics Core Facility, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Ute Moog
- Institute of Human Genetics, Heidelberg University, Heidelberg, Germany
| | - Martin Blum
- Institute of Zoology, University of Hohenheim, Stuttgart, Germany
| | - Christina M Evers
- Institute of Human Genetics, Heidelberg University, Heidelberg, Germany
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20
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Kim J, Kim J, Rhee K. PCNT is critical for the association and conversion of centrioles to centrosomes during mitosis. J Cell Sci 2019; 132:jcs.225789. [DOI: 10.1242/jcs.225789] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Accepted: 02/14/2019] [Indexed: 01/28/2023] Open
Abstract
A centrosome consists of a pair of centrioles and pericentriolar material (PCM). We manipulated expression of PCNT, a key PCM protein, and investigated roles of PCM in centriole behavior during mitosis. Deletion of PCNT had little effect on the interphase centrosomes. However, centrioles in PCNT-deleted mitotic cells prematurely separated and frequently amplified, revealing that centrioles are limited within the spindle poles by PCNT during mitosis. It is known that specific cleavage of PCNT is necessary for centriole separation during mitotic exit. Delayed centriole separation was observed in G0 phase when a noncleavable PCNT was removed or when PCNT was artificially cleaved by TEV protease. Furthermore, a daughter centriole converts to a mother centriole only after experiencing both mitotic exit and specific PCNT cleavage. Based on the results, we propose that a centriole pair disengages upon entering mitosis but remains associated with the surrounding PCM proteins throughout mitosis. During mitotic exit, specific cleavage of PCNT induces PCM disintegration. As a result, a daughter centriole separates from the mother centriole and converts to a young mother centriole.
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Affiliation(s)
- Jaeyoun Kim
- Department of Biological Sciences, Seoul National University, Seoul 08826, Korea
| | - Jeongjin Kim
- Department of Biological Sciences, Seoul National University, Seoul 08826, Korea
| | - Kunsoo Rhee
- Department of Biological Sciences, Seoul National University, Seoul 08826, Korea
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21
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Szekeres-Bartho J, Šućurović S, Mulac-Jeričević B. The Role of Extracellular Vesicles and PIBF in Embryo-Maternal Immune-Interactions. Front Immunol 2018; 9:2890. [PMID: 30619262 PMCID: PMC6300489 DOI: 10.3389/fimmu.2018.02890] [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: 08/09/2018] [Accepted: 11/26/2018] [Indexed: 02/01/2023] Open
Abstract
Pregnancy represents a unique immunological situation. Though paternal antigens expressed by the conceptus are recognized by the immune system of the mother, the immune response does not harm the fetus. Progesterone and a progesterone induced protein; PIBF are important players in re-adjusting the functioning of the maternal immune system during pregnancy. PIBF expressed by peripheral pregnancy lymphocytes, and other cell types, participates in the feto-maternal communication, partly, by mediating the immunological actions of progesterone. Several splice variants of PIBF were identified with different physiological activity. The full length 90 kD PIBF protein plays a role in cell cycle regulation, while shorter splice variants are secreted and act as cytokines. Aberrant production of PIBF isoforms lead to the loss of immune-regulatory functions, resulting in and pregnancy failure. By up regulating Th2 type cytokine production and by down-regulating NK activity, PIBF contributes to the altered attitude of the maternal immune system. Normal pregnancy is characterized by a Th2-dominant cytokine balance, which is partly due to the action of the smaller PIBF isoforms. These bind to a novel form of the IL-4 receptor, and induce increased production of IL-3, IL-4, and IL-10. The communication between the conceptus and the mother is established via extracellular vesicles (EVs). Pre-implantation embryos produce EVs both in vitro, and in vivo. PIBF transported by the EVs from the embryo to maternal lymphocytes induces increased IL-10 production by the latter, this way contributing to the Th2 dominant immune responses described during pregnancy.
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Affiliation(s)
- Julia Szekeres-Bartho
- Department of Medical Biology and Central Electron Microscope Laboratory, Medical School, Pécs University, Pécs, Hungary.,János Szentágothai Research Centre, Pécs University, Pécs, Hungary.,Endocrine Studies, Centre of Excellence, Pécs University, Pécs, Hungary.,MTA-PTE Human Reproduction Research Group, Pécs, Hungary
| | - Sandra Šućurović
- Department of Physiology and Immunology, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
| | - Biserka Mulac-Jeričević
- Department of Physiology and Immunology, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
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22
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Bärenz F, Kschonsak YT, Meyer A, Jafarpour A, Lorenz H, Hoffmann I. Ccdc61 controls centrosomal localization of Cep170 and is required for spindle assembly and symmetry. Mol Biol Cell 2018; 29:3105-3118. [PMID: 30354798 PMCID: PMC6340214 DOI: 10.1091/mbc.e18-02-0115] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Microtubule nucleation was uncovered as a key principle of spindle assembly. However, the mechanistic details about microtubule nucleation and the organization of spindle formation and symmetry are currently being revealed. Here we describe the function of coiled-coil domain containing 61 (Ccdc61), a so far uncharacterized centrosomal protein, in spindle assembly and symmetry. Our data describe that Ccdc61 is required for spindle assembly and precise chromosome alignments in mitosis. Microtubule tip-tracking experiments in the absence of Ccdc61 reveal a clear loss of the intrinsic symmetry of microtubule tracks within the spindle. Furthermore, we show that Ccdc61 controls the centrosomal localization of centrosomal protein of 170 kDa (Cep170), a protein that was shown previously to localize to centrosomes as well as spindle microtubules and promotes microtubule organization and microtubule assembly. Interestingly, selective disruption of Ccdc61 impairs the binding between Cep170 and TANK binding kinase 1, an interaction that is required for microtubule stability. In summary, we have discovered Ccdc61 as a centrosomal protein with an important function in mitotic microtubule organization.
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Affiliation(s)
- Felix Bärenz
- Cell Cycle Control and Carcinogenesis, German Cancer Research Center, DKFZ, 69120 Heidelberg, Germany
| | - Yvonne T Kschonsak
- Cell Cycle Control and Carcinogenesis, German Cancer Research Center, DKFZ, 69120 Heidelberg, Germany
| | - Annalena Meyer
- Cell Cycle Control and Carcinogenesis, German Cancer Research Center, DKFZ, 69120 Heidelberg, Germany
| | - Aliakbar Jafarpour
- Zentrum für Molekulare Biologie der Universität Heidelberg, DKFZ-ZMBH Alliance, 69120 Heidelberg, Germany
| | - Holger Lorenz
- Zentrum für Molekulare Biologie der Universität Heidelberg, DKFZ-ZMBH Alliance, 69120 Heidelberg, Germany
| | - Ingrid Hoffmann
- Cell Cycle Control and Carcinogenesis, German Cancer Research Center, DKFZ, 69120 Heidelberg, Germany
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23
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Nielsen JC, Nordgaard C, Tollenaere MAX, Bekker-Jensen S. Osmotic Stress Blocks Mobility and Dynamic Regulation of Centriolar Satellites. Cells 2018; 7:E65. [PMID: 29932434 PMCID: PMC6070812 DOI: 10.3390/cells7070065] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 06/19/2018] [Accepted: 06/20/2018] [Indexed: 12/15/2022] Open
Abstract
Centriolar satellites (CS) are small proteinaceous granules that cluster around the centrosome and serve as cargo vehicles for centrosomal proteins. It is generally accepted that CS support a number of canonical and specialized centrosome functions. Consequently, these highly dynamic structures are the target of regulation by several cellular signalling pathways. Two decades of research have led to the identification of a large number of molecular components and new biological roles of CS. Here, we summarize the latest advances in the continuous efforts to uncover the compositional, functional, dynamic and regulatory aspects of CS. We also report on our discovery that osmotic stress conditions render CS immobile and insensitive to remodelling. Upon a range of p38-activating stimuli, MK2 phosphorylates the CS component CEP131, resulting in 14-3-3 binding and a block to CS formation. This normally manifests as a rapid cellular depletion of satellites. In the case of osmotic stress, a potent inducer of p38 activity, CS translocation and dissolution is blocked, with the net result that satellites persist in an immobile state directly adjacent to the centrosome. Our results highlight a unique scenario where p38 activation and CS depletion is uncoupled, with potential implications for physiological and pathological osmotic stress responses.
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Affiliation(s)
- Julie C Nielsen
- Center for Healthy Aging, Department of Cellular and Molecular Medicine, University of Copenhagen, Blegdamsvej 3B, DK-2200 Copenhagen N, Denmark.
| | - Cathrine Nordgaard
- Center for Healthy Aging, Department of Cellular and Molecular Medicine, University of Copenhagen, Blegdamsvej 3B, DK-2200 Copenhagen N, Denmark.
| | - Maxim A X Tollenaere
- Center for Healthy Aging, Department of Cellular and Molecular Medicine, University of Copenhagen, Blegdamsvej 3B, DK-2200 Copenhagen N, Denmark.
| | - Simon Bekker-Jensen
- Center for Healthy Aging, Department of Cellular and Molecular Medicine, University of Copenhagen, Blegdamsvej 3B, DK-2200 Copenhagen N, Denmark.
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24
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Shearer RF, Frikstad KAM, McKenna J, McCloy RA, Deng N, Burgess A, Stokke T, Patzke S, Saunders DN. The E3 ubiquitin ligase UBR5 regulates centriolar satellite stability and primary cilia. Mol Biol Cell 2018; 29:1542-1554. [PMID: 29742019 PMCID: PMC6080653 DOI: 10.1091/mbc.e17-04-0248] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Primary cilia are crucial for signal transduction in a variety of pathways, including hedgehog and Wnt. Disruption of primary cilia formation (ciliogenesis) is linked to numerous developmental disorders (known as ciliopathies) and diseases, including cancer. The ubiquitin-proteasome system (UPS) component UBR5 was previously identified as a putative positive regulator of ciliogenesis in a functional genomics screen. UBR5 is an E3 ubiquitin ligase that is frequently deregulated in tumors, but its biological role in cancer is largely uncharacterized, partly due to a lack of understanding of interacting proteins and pathways. We validated the effect of UBR5 depletion on primary cilia formation using a robust model of ciliogenesis, and identified CSPP1, a centrosomal and ciliary protein required for cilia formation, as a UBR5-interacting protein. We show that UBR5 ubiquitylates CSPP1, and that UBR5 is required for cytoplasmic organization of CSPP1-comprising centriolar satellites in centrosomal periphery, suggesting that UBR5-mediated ubiquitylation of CSPP1 or associated centriolar satellite constituents is one underlying requirement for cilia expression. Hence, we have established a key role for UBR5 in ciliogenesis that may have important implications in understanding cancer pathophysiology.
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Affiliation(s)
- Robert F Shearer
- Garvan Institute of Medical Research, Kinghorn Cancer Centre, Darlinghurst 2010, Australia.,Faculty of Medicine, St. Vincent's Clinical School, University of New South Wales, Sydney 2052, Australia
| | - Kari-Anne Myrum Frikstad
- Department of Radiation Biology, Institute for Cancer Research, Norwegian Radium Hospital, Oslo University Hospital, 0310 Oslo, Norway
| | - Jessie McKenna
- Faculty of Medicine, School of Medical Sciences, University of New South Wales, Sydney 2052, Australia
| | - Rachael A McCloy
- Garvan Institute of Medical Research, Kinghorn Cancer Centre, Darlinghurst 2010, Australia
| | - Niantao Deng
- Garvan Institute of Medical Research, Kinghorn Cancer Centre, Darlinghurst 2010, Australia
| | - Andrew Burgess
- Garvan Institute of Medical Research, Kinghorn Cancer Centre, Darlinghurst 2010, Australia.,Faculty of Medicine, St. Vincent's Clinical School, University of New South Wales, Sydney 2052, Australia
| | - Trond Stokke
- Department of Radiation Biology, Institute for Cancer Research, Norwegian Radium Hospital, Oslo University Hospital, 0310 Oslo, Norway
| | - Sebastian Patzke
- Department of Radiation Biology, Institute for Cancer Research, Norwegian Radium Hospital, Oslo University Hospital, 0310 Oslo, Norway
| | - Darren N Saunders
- Faculty of Medicine, School of Medical Sciences, University of New South Wales, Sydney 2052, Australia
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25
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Seo MY, Rhee K. Caspase-mediated cleavage of the centrosomal proteins during apoptosis. Cell Death Dis 2018; 9:571. [PMID: 29752437 PMCID: PMC5948218 DOI: 10.1038/s41419-018-0632-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 04/22/2018] [Accepted: 04/26/2018] [Indexed: 12/20/2022]
Abstract
The centrosome is the major microtubule-organizing center and plays important roles in intracellular transport, cellular morphology, and motility. In mitotic cells, centrosomes function as spindle poles to pull a set of chromosomes into daughter cells. In quiescent cells, primary cilia are originated from the centrosomes. Given its involvement in various cellular processes, it is little surprising that the organelle would also participate in apoptotic events. However, it remains elusive how the centrosome changes in structure and organization during apoptosis. Apoptosis, a programmed cell death, is required for homeostatic tissue maintenance, embryonic development, stress responses, etc. Activation of caspases generates a cascade of apoptotic pathways, explaining much of what happens during apoptosis. Here, we report the proteolytic cleavage of selected centrosomal proteins in apoptotic cells. SAS-6, a cartwheel component of centrioles, was specifically cleaved at the border of the coiled-coil domain and the disordered C-terminus. Pericentrin, a scaffold of pericentriolar material, was also cleaved during apoptosis. These cleavages were efficiently blocked by the caspase inhibitors. We propose that the caspase-dependent proteolysis of the centrosomal proteins may destabilize the configuration of a centrosome. Loss of centrosomes may be required for the formation of apoptotic microtubule networks, which are essential for apoptotic fragmentation. This work demonstrates the first centrosomal targets by caspases during apoptosis.
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Affiliation(s)
- Mi Young Seo
- Department of Biological Sciences, Seoul National University, Seoul, 08826, Korea
| | - Kunsoo Rhee
- Department of Biological Sciences, Seoul National University, Seoul, 08826, Korea.
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26
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Szekeres-Bartho J. The Role of Progesterone in Feto-Maternal Immunological Cross Talk. Med Princ Pract 2018; 27:301-307. [PMID: 29949797 PMCID: PMC6167700 DOI: 10.1159/000491576] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 06/27/2018] [Indexed: 12/14/2022] Open
Abstract
This review aims to provide a brief historical overview of the feto-maternal immunological relationship, which profoundly influences the outcome of pregnancy. The initial question posed in the 1950s by Medawar [Symp Soc Exp Biol. 1953; 7: 320-338] was based on the assumption that the maternal immune system recognizes the fetus as an allograft. Indeed, based on the association between HLA-matching and spontaneous miscarriage, it became obvious that immunological recognition of pregnancy is required for a successful gestation. The restricted expression of polymorphic HLA antigens on the trophoblast, together with the presence of nonpolymorphic MHC products, excludes recognition by both T and NK cells of trophoblast-presented antigens; however, γδ T cells, which constitute the majority of decidual T cells, are likely candidates. Indeed, a high number of activated, progesterone receptor-expressing γδ T cells are present in the peripheral blood of healthy pregnant women and, in the presence of progesterone, these cells secrete an immunomodulatory protein called progesterone-induced blocking factor (PIBF). As early as in the peri-implantation period, the embryo communicates with the maternal immune system via PIBF containing extracellular vesicles. PIBF contributes to the dominance of Th2-type reactivity which characterizes normal pregnancy by inducing increased production of Th2 cytokines. The high expression of this molecule in the decidua might be one of the reasons for the low cytotoxic activity of decidual NK cells.
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Affiliation(s)
- Julia Szekeres-Bartho
- *Julia Szekeres-Bartho, Department of Medical Biology and Central Electron Microscope Laboratory, Medical School, Pecs University, 12 Szigeti Street, HU-7624 Pecs (Hungary), E-Mail
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27
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Sld5 Ensures Centrosomal Resistance to Congression Forces by Preserving Centriolar Satellites. Mol Cell Biol 2017; 38:MCB.00371-17. [PMID: 29061732 DOI: 10.1128/mcb.00371-17] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Accepted: 10/11/2017] [Indexed: 11/20/2022] Open
Abstract
The migration of chromosomes during mitosis is mediated primarily by kinesins that bind to the chromosomes and move along the microtubules, exerting pulling and pushing forces on the centrosomes. We report that a DNA replication protein, Sld5, localizes to the centrosomes, resisting the microtubular pulling forces experienced during chromosome congression. In the absence of Sld5, centriolar satellites, which normally cluster around the centrosomes, are dissipated throughout the cytoplasm, resulting in the loss of their known function of recruiting the centrosomal protein, pericentrin. We observed that Sld5-deficient centrosomes lacking pericentrin were unable to endure the CENP-E- and Kid-mediated microtubular forces that converge on the centrosomes during chromosome congression, resulting in monocentriolar and acentriolar spindle poles. The minus-end-directed kinesin-14 motor protein, HSET, sustains the traction forces that mediate centrosomal fragmentation in Sld5-depleted cells. Thus, we report that a DNA replication protein has an as yet unknown function of ensuring spindle pole resistance to traction forces exerted during chromosome congression.
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28
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Balassa T, Berta G, Jakab L, Bohonyi N, Szekeres-Bartho J. The effect of the Progesterone-Induced Blocking Factor (PIBF) on E-cadherin expression, cell motility and invasion of primary tumour cell lines. J Reprod Immunol 2017; 125:8-15. [PMID: 29107859 DOI: 10.1016/j.jri.2017.10.047] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 10/24/2017] [Accepted: 10/31/2017] [Indexed: 10/18/2022]
Abstract
In addition to being immunomodulatory, Progesterone-Induced Blocking Factor (PIBF) plays a role in cell cycle regulation and invasion. The full length protein is associated with the pericentriolar satellites and as such, it is crucial for maintaining the integrity of spindle poles during mitosis. Another suggestive evidence for the involvement of PIBF in tumour progression is the fact that the PIBF gene has been identified on chromosome 13 in the region associated with breast cancer susceptibility. Earlier we showed that PIBF differentially regulates the invasiveness of trophoblast and tumour cell lines. The aim of the present study was to further investigate the role of PIBF in tumour development, using primary ovarian- (OC) and primary lung carcinoma (LC) cell cultures, and JEG-3 choriocarcinoma cell line. In the cultured cells PIBF was knocked down by siRNA treatment, and the impact of PIBF deficiency on MMP-9 activity and E-cadherin expression as well as on invasive and migratory capacity of the cells was tested. In conditioned media of PIBF-deficient JEG-3 cells, LC cells and OC cells MMP-9 activity was reduced to 36% 35%, and 65% respectively compared to controls. Though PIBF knock down did not affect migration, in JEG-3 cells, LC primary cells and OC primary cells PIBF deficiency resulted 20%, 50% and 50% decrease of invasion respectively. PIBF silencing resulted in increased E-cadherin expression, suggesting that by down regulating E-cadherin expression, PIBF might interfere with the cell-cell adhesion mechanisms and by increasing MMP activity induced extracellular matrix degradation, facilitates the invasion of tumour cells.
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Affiliation(s)
- Tímea Balassa
- Department of Medical Biology, Medical School, Pecs University, Pecs, Hungary; János Szentagothai Research Centre, Pecs, Hungary; Endocrine Studies, Centre of Excellence, Pecs University, Pecs, Hungary
| | - Gergely Berta
- Department of Medical Biology, Medical School, Pecs University, Pecs, Hungary; János Szentagothai Research Centre, Pecs, Hungary
| | - László Jakab
- Department of Surgery, Medical School, Pecs University, Pecs, Hungary
| | - Noémi Bohonyi
- Department of Obstetrics and Gynaecology, Pecs University, Pecs, Hungary
| | - Júlia Szekeres-Bartho
- Department of Medical Biology, Medical School, Pecs University, Pecs, Hungary; János Szentagothai Research Centre, Pecs, Hungary; MTA-PTE Human Reproduction Research Group, Pecs, Hungary; Endocrine Studies, Centre of Excellence, Pecs University, Pecs, Hungary.
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29
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Lee I, Kim GS, Bae JS, Kim J, Rhee K, Hwang DS. The DNA replication protein Cdc6 inhibits the microtubule-organizing activity of the centrosome. J Biol Chem 2017; 292:16267-16276. [PMID: 28827311 DOI: 10.1074/jbc.m116.763680] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 08/14/2017] [Indexed: 11/06/2022] Open
Abstract
The centrosome serves as a major microtubule-organizing center (MTOC). The Cdc6 protein is a component of the pre-replicative complex and a licensing factor for the initiation of chromosome replication and localizes to centrosomes during the S and G2 phases of the cfell cycle of human cells. This cell cycle-dependent localization of Cdc6 to the centrosome motivated us to investigate whether Cdc6 negatively regulates MTOC activity and to determine the integral proteins that comprise the pericentriolar material (PCM). Time-lapse live-cell imaging of microtubule regrowth revealed that Cdc6 depletion increased microtubule nucleation at the centrosomes and that expression of Cdc6 in Cdc6-depleted cells reversed this effect. This increase and decrease in microtubule nucleation correlated with the centrosomal intensities of PCM proteins such as γ-tubulin, pericentrin, CDK5 regulatory subunit-associated protein 2 (CDK5RAP2), and centrosomal protein 192 (Cep192). The regulation of microtubule nucleation and the recruitment of PCM proteins to the centrosome required Cdc6 ATPase activity, as well as a centrosomal localization of Cdc6. These results suggest a novel function for Cdc6 in coordinating centrosome assembly and function.
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Affiliation(s)
- Inyoung Lee
- From the Department of Biological Sciences, Seoul National University, Seoul 08826, Korea
| | - Gwang Su Kim
- From the Department of Biological Sciences, Seoul National University, Seoul 08826, Korea
| | - Jun Sung Bae
- From the Department of Biological Sciences, Seoul National University, Seoul 08826, Korea
| | - Jaeyoun Kim
- From the Department of Biological Sciences, Seoul National University, Seoul 08826, Korea
| | - Kunsoo Rhee
- From the Department of Biological Sciences, Seoul National University, Seoul 08826, Korea
| | - Deog Su Hwang
- From the Department of Biological Sciences, Seoul National University, Seoul 08826, Korea
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30
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Abstract
There is an abundance of accumulating data strongly suggesting there is a key role for the progesterone receptor in the molecular events effecting the growth or containment of a variety of cancers. This knowledge should lead to novel new strategies to combat various cancers, including drugs classified as progesterone receptor modulators or monoclonal antibodies against some of the key proteins needed for cancer proliferation by suppressing immune surveillance. Areas covered: The role of the classic nuclear receptor and molecular events needed for proliferation are reviewed including cancers of the breast, endometrium, prostate, thyroid, and leiomyomas and leiomyosarcoma. The potential role of non-genomic membrane progesterone receptors is reviewed. The prognostic role of the presence of progesterone receptors is also discussed. Over 1000 research publications were read after conducting a PubMed search. Expert commentary: Discussion is made about a unique immunomodulatory protein called the progesterone induced blocking factor (PIBF). The role of this protein, that is unique to rapidly growing cells, may hold a key to how the cancer cells escape immune surveillance. Thus, techniques to suppress the intracytoplasmic isoforms of PIBF may play a significant role in the fight against all cancers, not just the ones with the classic nuclear progesterone receptors.
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Affiliation(s)
- Jerome H Check
- a Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility , Cooper Medical School of Rowan University , Camden , New Jersey , United States
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31
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Conkar D, Culfa E, Odabasi E, Rauniyar N, Yates JR, Firat-Karalar EN. The centriolar satellite protein CCDC66 interacts with CEP290 and functions in cilium formation and trafficking. J Cell Sci 2017; 130:1450-1462. [PMID: 28235840 DOI: 10.1242/jcs.196832] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Accepted: 02/16/2017] [Indexed: 01/08/2023] Open
Abstract
Centriolar satellites are membrane-less structures that localize and move around the centrosome and cilium complex in a microtubule-dependent manner. They play important roles in centrosome- and cilium-related processes, including protein trafficking to the centrosome and cilium complex, and ciliogenesis, and they are implicated in ciliopathies. Despite the important regulatory roles of centriolar satellites in the assembly and function of the centrosome and cilium complex, the molecular mechanisms of their functions remain poorly understood. To dissect the mechanism for their regulatory roles during ciliogenesis, we performed an analysis to determine the proteins that localize in close proximity to the satellite protein CEP72, among which was the retinal degeneration gene product CCDC66. We identified CCDC66 as a microtubule-associated protein that dynamically localizes to the centrosome, centriolar satellites and the primary cilium throughout the cell cycle. Like the BBSome component BBS4, CCDC66 distributes between satellites and the primary cilium during ciliogenesis. CCDC66 has extensive proximity interactions with centrosome and centriolar satellite proteins, and co-immunoprecipitation experiments revealed interactions between CCDC66, CEP290 and PCM1. Ciliogenesis, ciliary recruitment of BBS4 and centriolar satellite organization are impaired in cells depleted for CCDC66. Taken together, our findings identify CCDC66 as a targeting factor for centrosome and cilium proteins.
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Affiliation(s)
- Deniz Conkar
- Department of Molecular Biology and Genetics, Koç University, Istanbul 34450, Turkey
| | - Efraim Culfa
- Department of Molecular Biology and Genetics, Koç University, Istanbul 34450, Turkey
| | - Ezgi Odabasi
- Department of Molecular Biology and Genetics, Koç University, Istanbul 34450, Turkey
| | - Navin Rauniyar
- Department of Chemical Biology, The Scripps Research Institute, 10550 N. Torrey Pines Rd., La Jolla, CA 92037, USA
| | - John R Yates
- Department of Chemical Biology, The Scripps Research Institute, 10550 N. Torrey Pines Rd., La Jolla, CA 92037, USA
| | - Elif N Firat-Karalar
- Department of Molecular Biology and Genetics, Koç University, Istanbul 34450, Turkey
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32
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Mechanisms of Chromosome Congression during Mitosis. BIOLOGY 2017; 6:biology6010013. [PMID: 28218637 PMCID: PMC5372006 DOI: 10.3390/biology6010013] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Revised: 01/07/2017] [Accepted: 01/28/2017] [Indexed: 12/13/2022]
Abstract
Chromosome congression during prometaphase culminates with the establishment of a metaphase plate, a hallmark of mitosis in metazoans. Classical views resulting from more than 100 years of research on this topic have attempted to explain chromosome congression based on the balance between opposing pulling and/or pushing forces that reach an equilibrium near the spindle equator. However, in mammalian cells, chromosome bi-orientation and force balance at kinetochores are not required for chromosome congression, whereas the mechanisms of chromosome congression are not necessarily involved in the maintenance of chromosome alignment after congression. Thus, chromosome congression and maintenance of alignment are determined by different principles. Moreover, it is now clear that not all chromosomes use the same mechanism for congressing to the spindle equator. Those chromosomes that are favorably positioned between both poles when the nuclear envelope breaks down use the so-called "direct congression" pathway in which chromosomes align after bi-orientation and the establishment of end-on kinetochore-microtubule attachments. This favors the balanced action of kinetochore pulling forces and polar ejection forces along chromosome arms that drive chromosome oscillatory movements during and after congression. The other pathway, which we call "peripheral congression", is independent of end-on kinetochore microtubule-attachments and relies on the dominant and coordinated action of the kinetochore motors Dynein and Centromere Protein E (CENP-E) that mediate the lateral transport of peripheral chromosomes along microtubules, first towards the poles and subsequently towards the equator. How the opposite polarities of kinetochore motors are regulated in space and time to drive congression of peripheral chromosomes only now starts to be understood. This appears to be regulated by position-dependent phosphorylation of both Dynein and CENP-E and by spindle microtubule diversity by means of tubulin post-translational modifications. This so-called "tubulin code" might work as a navigation system that selectively guides kinetochore motors with opposite polarities along specific spindle microtubule populations, ultimately leading to the congression of peripheral chromosomes. We propose an integrated model of chromosome congression in mammalian cells that depends essentially on the following parameters: (1) chromosome position relative to the spindle poles after nuclear envelope breakdown; (2) establishment of stable end-on kinetochore-microtubule attachments and bi-orientation; (3) coordination between kinetochore- and arm-associated motors; and (4) spatial signatures associated with post-translational modifications of specific spindle microtubule populations. The physiological consequences of abnormal chromosome congression, as well as the therapeutic potential of inhibiting chromosome congression are also discussed.
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33
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Hori A, Toda T. Regulation of centriolar satellite integrity and its physiology. Cell Mol Life Sci 2016; 74:213-229. [PMID: 27484406 PMCID: PMC5219025 DOI: 10.1007/s00018-016-2315-x] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Revised: 07/14/2016] [Accepted: 07/21/2016] [Indexed: 01/01/2023]
Abstract
Centriolar satellites comprise cytoplasmic granules that are located around the centrosome. Their molecular identification was first reported more than a quarter of a century ago. These particles are not static in the cell but instead constantly move around the centrosome. Over the last decade, significant advances in their molecular compositions and biological functions have been achieved due to comprehensive proteomics and genomics, super-resolution microscopy analyses and elegant genetic manipulations. Centriolar satellites play pivotal roles in centrosome assembly and primary cilium formation through the delivery of centriolar/centrosomal components from the cytoplasm to the centrosome. Their importance is further underscored by the fact that mutations in genes encoding satellite components and regulators lead to various human disorders such as ciliopathies. Moreover, the most recent findings highlight dynamic structural remodelling in response to internal and external cues and unexpected positive feedback control that is exerted from the centrosome for centriolar satellite integrity.
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Affiliation(s)
- Akiko Hori
- Lincoln's Inn Fields Laboratory, The Francis Crick Institute, 44 Lincoln's Inn Fields, London, WC2A 3LY, UK.,Developmental Biomedical Science, Graduate School of Biological Sciences, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama, Ikoma, Nara, 630-0192, Japan
| | - Takashi Toda
- Lincoln's Inn Fields Laboratory, The Francis Crick Institute, 44 Lincoln's Inn Fields, London, WC2A 3LY, UK. .,Department of Molecular Biotechnology, Hiroshima Research Center for Healthy Aging (HiHA), Graduate School of Advanced Sciences of Matter, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8530, Japan.
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Gutiérrez-Rodríguez A, Camacho-Arroyo I. PAPEL DEL FACTOR DE BLOQUEO INDUCIDO POR PROGESTERONA (PIBF) EN EMBARAZO Y CÁNCER. TIP REVISTA ESPECIALIZADA EN CIENCIAS QUÍMICO-BIOLÓGICAS 2016. [DOI: 10.1016/j.recqb.2016.06.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Yoo BH, Park CH, Kim HJ, Kang DS, Bae CD. CKAP2 is necessary to ensure the faithful spindle bipolarity in a dividing diploid hepatocyte. Biochem Biophys Res Commun 2016; 473:886-893. [PMID: 27055594 DOI: 10.1016/j.bbrc.2016.03.145] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Accepted: 03/29/2016] [Indexed: 10/22/2022]
Abstract
Spindle bipolarity is crucial for segregating chromosome during somatic cell division. Previous studies have suggested that cytoskeleton associated protein 2 (CKAP2) is involved in spindle assembly and chromosome segregation. In this study, we show that CKAP2-depleted primary hepatocytes exhibit over-duplicated centrosomes with disjoined chromosomes from metaphase plate. These cells proceed to apoptosis or multipolar cell division and subsequent apoptotic cell death. In addition, a mouse liver regeneration experiment showed a marked decrease in efficiency of hepatic regeneration in CKAP2-depleted liver. These data suggest a physiological role of CKAP2 in the formation of spindle bipolarity, which is necessary for maintaining chromosomal stability.
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Affiliation(s)
- Bum Ho Yoo
- Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea.
| | - Chi-Hu Park
- Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea.
| | - Hyun-Jun Kim
- Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea.
| | - Du-Seock Kang
- School of Life Sciences, Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea.
| | - Chang-Dae Bae
- Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea.
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36
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Wang L, Lee K, Malonis R, Sanchez I, Dynlacht BD. Tethering of an E3 ligase by PCM1 regulates the abundance of centrosomal KIAA0586/Talpid3 and promotes ciliogenesis. eLife 2016; 5. [PMID: 27146717 PMCID: PMC4858382 DOI: 10.7554/elife.12950] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Accepted: 04/18/2016] [Indexed: 12/15/2022] Open
Abstract
To elucidate the role of centriolar satellites in ciliogenesis, we deleted the gene encoding the PCM1 protein, an integral component of satellites. PCM1 null human cells show marked defects in ciliogenesis, precipitated by the loss of specific proteins from satellites and their relocation to centrioles. We find that an amino-terminal domain of PCM1 can restore ciliogenesis and satellite localization of certain proteins, but not others, pinpointing unique roles for PCM1 and a group of satellite proteins in cilium assembly. Remarkably, we find that PCM1 is essential for tethering the E3 ligase, Mindbomb1 (Mib1), to satellites. In the absence of PCM1, Mib1 destabilizes Talpid3 through poly-ubiquitylation and suppresses cilium assembly. Loss of PCM1 blocks ciliogenesis by abrogating recruitment of ciliary vesicles associated with the Talpid3-binding protein, Rab8, which can be reversed by inactivating Mib1. Thus, PCM1 promotes ciliogenesis by tethering a key E3 ligase to satellites and restricting it from centrioles. DOI:http://dx.doi.org/10.7554/eLife.12950.001
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Affiliation(s)
- Lei Wang
- Department of Pathology, New York University Cancer Institute, New York University School of Medicine, New York, United States
| | - Kwanwoo Lee
- Department of Pathology, New York University Cancer Institute, New York University School of Medicine, New York, United States
| | - Ryan Malonis
- Department of Pathology, New York University Cancer Institute, New York University School of Medicine, New York, United States
| | - Irma Sanchez
- Department of Pathology, New York University Cancer Institute, New York University School of Medicine, New York, United States
| | - Brian D Dynlacht
- Department of Pathology, New York University Cancer Institute, New York University School of Medicine, New York, United States
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37
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Chou EJ, Hung LY, Tang CJC, Hsu WB, Wu HY, Liao PC, Tang TK. Phosphorylation of CPAP by Aurora-A Maintains Spindle Pole Integrity during Mitosis. Cell Rep 2016; 14:2975-87. [PMID: 26997271 DOI: 10.1016/j.celrep.2016.02.085] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Revised: 01/26/2016] [Accepted: 02/23/2016] [Indexed: 02/01/2023] Open
Abstract
CPAP is required for centriole elongation during S/G2 phase, but the role of CPAP in mitosis is incompletely understood. Here, we show that CPAP maintains spindle pole integrity through its phosphorylation by Aurora-A during mitosis. Depletion of CPAP induced a prolonged delay in mitosis, pericentriolar material (PCM) dispersion, and multiple mitotic abnormalities. Further studies demonstrated that CPAP directly interacts with and is phosphorylated by Aurora-A at serine 467 during mitosis. Interestingly, the dispersal of the PCM was effectively rescued by ectopic expression of wild-type CPAP or a phospho-mimic CPAP-S467D mutant, but not a non-phosphorylated CPAP-S467A mutant. Finally, we found that CPAP-S467D has a low affinity for microtubule binding but a high affinity for PCM proteins. Together, our results support a model wherein CPAP is required for proper mitotic progression, and phosphorylation of CPAP by Aurora-A is essential for maintaining spindle pole integrity.
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Affiliation(s)
- En-Ju Chou
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei 11490, Taiwan; Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan
| | - Liang-Yi Hung
- Institute of Bioinformatics and Biosignal Transduction, National Cheng Kung University, Tainan 70101, Taiwan
| | - Chieh-Ju C Tang
- Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan
| | - Wen-Bin Hsu
- Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan
| | - Hsin-Yi Wu
- Department of Environmental and Occupational Health, National Cheng Kung University, Tainan 70101, Taiwan
| | - Pao-Chi Liao
- Department of Environmental and Occupational Health, National Cheng Kung University, Tainan 70101, Taiwan
| | - Tang K Tang
- Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan.
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38
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Hori A, Barnouin K, Snijders AP, Toda T. A non-canonical function of Plk4 in centriolar satellite integrity and ciliogenesis through PCM1 phosphorylation. EMBO Rep 2016; 17:326-37. [PMID: 26755742 PMCID: PMC4772974 DOI: 10.15252/embr.201541432] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Accepted: 11/30/2015] [Indexed: 12/13/2022] Open
Abstract
Centrioles are the major constituents of the animal centrosome, in which Plk4 kinase serves as a master regulator of the duplication cycle. Many eukaryotes also contain numerous peripheral particles known as centriolar satellites. While centriolar satellites aid centriole assembly and primary cilium formation, it is unknown whether Plk4 plays any regulatory roles in centriolar satellite integrity. Here we show that Plk4 is a critical determinant of centriolar satellite organisation. Plk4 depletion leads to the dispersion of centriolar satellites and perturbed ciliogenesis. Plk4 interacts with the satellite component PCM1, and its kinase activity is required for phosphorylation of the conserved S372. The nonphosphorylatable PCM1 mutant recapitulates phenotypes of Plk4 depletion, while the phosphomimetic mutant partially rescues the dispersed centriolar satellite patterns and ciliogenesis in cells depleted of PCM1. We show that S372 phosphorylation occurs during the G1 phase of the cell cycle and is important for PCM1 dimerisation and interaction with other satellite components. Our findings reveal that Plk4 is required for centriolar satellite function, which may underlie the ciliogenesis defects caused by Plk4 dysfunction.
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Affiliation(s)
- Akiko Hori
- The Francis Crick Institute, Lincoln's Inn Fields Laboratory, London, UK Developmental Biomedical Science, Graduate School of Biological Sciences, Nara Institute of Science and Technology (NAIST), Ikoma Nara, Japan
| | - Karin Barnouin
- The Francis Crick Institute, Clare Hall Laboratory, London, UK
| | | | - Takashi Toda
- The Francis Crick Institute, Lincoln's Inn Fields Laboratory, London, UK Hiroshima Research Center for Healthy Aging (HiHA), Department of Molecular Biotechnology, Graduate School of Advanced Sciences of Matter Hiroshima University, Higashi-Hiroshima, Japan
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39
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Kurtulmus B, Wang W, Ruppert T, Neuner A, Cerikan B, Viol L, Dueñas-Sánchez R, Gruss OJ, Pereira G. WDR8 is a centriolar satellite and centriole-associated protein that promotes ciliary vesicle docking during ciliogenesis. J Cell Sci 2015; 129:621-36. [PMID: 26675238 DOI: 10.1242/jcs.179713] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Accepted: 12/09/2015] [Indexed: 12/30/2022] Open
Abstract
Ciliogenesis initiates at the mother centriole through a series of events that include membrane docking, displacement of cilia-inhibitory proteins and axoneme elongation. Centriolar proteins, in particular at distal and subdistal appendages, carry out these functions. Recently, cytoplasmic complexes named centriolar satellites have also been shown to promote ciliogenesis. Little is known about the functional and molecular relationship between appendage proteins, satellites and cilia biogenesis. Here, we identified the WD-repeat protein 8 (WDR8, also known as WRAP73) as a satellite and centriolar component. We show that WDR8 interacts with the satellite proteins SSX2IP and PCM1 as well as the centriolar proximal end component Cep135. Cep135 is required for the recruitment of WDR8 to centrioles. Depletion experiments revealed that WDR8 and Cep135 have strongly overlapping functions in ciliogenesis. Both are indispensable for ciliary vesicle docking to the mother centriole and for unlocking the distal end of the mother centriole from the ciliary inhibitory complex CP110-Cep97. Our data thus point to an important function of centriolar proximal end proteins in ciliary membrane biogenesis, and establish WDR8 and Cep135 as two factors that are essential for the initial steps of ciliation.
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Affiliation(s)
- Bahtiyar Kurtulmus
- Centre for Organismal Studies (COS), Im Neuenheimer Feld 230, Heidelberg 69120, Germany Division of Centrosomes and Cilia, German Cancer Research Centre (DKFZ), DKFZ-ZMBH Alliance, Im Neuenheimer Feld 581, Heidelberg 69120, Germany
| | - Wenbo Wang
- Division of Centrosomes and Cilia, German Cancer Research Centre (DKFZ), DKFZ-ZMBH Alliance, Im Neuenheimer Feld 581, Heidelberg 69120, Germany Zentrum für Molekulare Biologie der Universität Heidelberg (ZMBH), DKFZ-ZMBH Alliance, Im Neuenheimer Feld 282, Heidelberg 69120, Germany
| | - Thomas Ruppert
- Zentrum für Molekulare Biologie der Universität Heidelberg (ZMBH), DKFZ-ZMBH Alliance, Im Neuenheimer Feld 282, Heidelberg 69120, Germany
| | - Annett Neuner
- Zentrum für Molekulare Biologie der Universität Heidelberg (ZMBH), DKFZ-ZMBH Alliance, Im Neuenheimer Feld 282, Heidelberg 69120, Germany
| | - Berati Cerikan
- Zentrum für Molekulare Biologie der Universität Heidelberg (ZMBH), DKFZ-ZMBH Alliance, Im Neuenheimer Feld 282, Heidelberg 69120, Germany
| | - Linda Viol
- Centre for Organismal Studies (COS), Im Neuenheimer Feld 230, Heidelberg 69120, Germany Division of Centrosomes and Cilia, German Cancer Research Centre (DKFZ), DKFZ-ZMBH Alliance, Im Neuenheimer Feld 581, Heidelberg 69120, Germany
| | - Rafael Dueñas-Sánchez
- Division of Centrosomes and Cilia, German Cancer Research Centre (DKFZ), DKFZ-ZMBH Alliance, Im Neuenheimer Feld 581, Heidelberg 69120, Germany
| | - Oliver J Gruss
- Zentrum für Molekulare Biologie der Universität Heidelberg (ZMBH), DKFZ-ZMBH Alliance, Im Neuenheimer Feld 282, Heidelberg 69120, Germany
| | - Gislene Pereira
- Centre for Organismal Studies (COS), Im Neuenheimer Feld 230, Heidelberg 69120, Germany Division of Centrosomes and Cilia, German Cancer Research Centre (DKFZ), DKFZ-ZMBH Alliance, Im Neuenheimer Feld 581, Heidelberg 69120, Germany
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40
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Kim J, Lee K, Rhee K. PLK1 regulation of PCNT cleavage ensures fidelity of centriole separation during mitotic exit. Nat Commun 2015; 6:10076. [PMID: 26647647 PMCID: PMC4682042 DOI: 10.1038/ncomms10076] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Accepted: 10/30/2015] [Indexed: 11/26/2022] Open
Abstract
Centrioles are duplicated and segregated in close link to the cell cycle. During mitosis, daughter centrioles are disengaged and eventually separated from mother centrioles. New daughter centrioles may be generated only after centriole separation. Therefore, centriole separation is considered a licensing step for centriole duplication. It was previously known that separase specifically cleaves pericentrin (PCNT) during mitotic exit. Here we report that PCNT has to be phosphorylated by PLK1 to be a suitable substrate of separase. Phospho-resistant mutants of PCNT are not cleaved by separase and eventually inhibit centriole separation. Furthermore, phospho-mimetic PCNT mutants rescue centriole separation even in the presence of a PLK1 inhibitor. On the basis on these results, we propose that PLK1 phosphorylation is a priming step for separase-mediated cleavage of PCNT and eventually for centriole separation. PLK1 phosphorylation of PCNT provides an additional layer of regulatory mechanism to ensure the fidelity of centriole separation during mitotic exit.
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Affiliation(s)
- Jaeyoun Kim
- Department of Biological Sciences, Seoul National University, Seoul 08826, Korea
| | - Kwanwoo Lee
- Department of Biological Sciences, Seoul National University, Seoul 08826, Korea
| | - Kunsoo Rhee
- Department of Biological Sciences, Seoul National University, Seoul 08826, Korea
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41
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Lerit DA, Jordan HA, Poulton JS, Fagerstrom CJ, Galletta BJ, Peifer M, Rusan NM. Interphase centrosome organization by the PLP-Cnn scaffold is required for centrosome function. J Cell Biol 2015; 210:79-97. [PMID: 26150390 PMCID: PMC4494003 DOI: 10.1083/jcb.201503117] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Cnn and PLP directly interact at two defined sites to coordinate the cell cycle–dependent rearrangement and scaffolding activity of the centrosome to permit normal centrosome organization, cell division, and embryonic viability. Pericentriolar material (PCM) mediates the microtubule (MT) nucleation and anchoring activity of centrosomes. A scaffold organized by Centrosomin (Cnn) serves to ensure proper PCM architecture and functional changes in centrosome activity with each cell cycle. Here, we investigate the mechanisms that spatially restrict and temporally coordinate centrosome scaffold formation. Focusing on the mitotic-to-interphase transition in Drosophila melanogaster embryos, we show that the elaboration of the interphase Cnn scaffold defines a major structural rearrangement of the centrosome. We identify an unprecedented role for Pericentrin-like protein (PLP), which localizes to the tips of extended Cnn flares, to maintain robust interphase centrosome activity and promote the formation of interphase MT asters required for normal nuclear spacing, centrosome segregation, and compartmentalization of the syncytial embryo. Our data reveal that Cnn and PLP directly interact at two defined sites to coordinate the cell cycle–dependent rearrangement and scaffolding activity of the centrosome to permit normal centrosome organization, cell division, and embryonic viability.
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Affiliation(s)
- Dorothy A Lerit
- Cell Biology and Physiology Center, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892
| | - Holly A Jordan
- Cell Biology and Physiology Center, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892
| | - John S Poulton
- Biology Department, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Carey J Fagerstrom
- Cell Biology and Physiology Center, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892
| | - Brian J Galletta
- Cell Biology and Physiology Center, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892
| | - Mark Peifer
- Biology Department, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Nasser M Rusan
- Cell Biology and Physiology Center, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892
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42
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Seo MY, Jang W, Rhee K. Integrity of the Pericentriolar Material Is Essential for Maintaining Centriole Association during M Phase. PLoS One 2015; 10:e0138905. [PMID: 26407333 PMCID: PMC4583256 DOI: 10.1371/journal.pone.0138905] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2015] [Accepted: 09/06/2015] [Indexed: 01/05/2023] Open
Abstract
A procentriole is assembled next to the mother centriole during S phase and remains associated until M phase. After functioning as a spindle pole during mitosis, the mother centriole and procentriole are separated at the end of mitosis. A close association of the centriole pair is regarded as an intrinsic block to the centriole reduplication. Therefore, deregulation of this process may cause a problem in the centriole number control, resulting in increased genomic instability. Despite its importance for faithful centriole duplication, the mechanism of centriole separation is not fully understood yet. Here, we report that centriole pairs are prematurely separated in cells whose cell cycle is arrested at M phase by STLC. Dispersal of the pericentriolar material (PCM) was accompanied. This phenomenon was independent of the separase activity but needed the PLK1 activity. Nocodazole effectively inhibited centriole scattering in STLC-treated cells, possibly by reducing the microtubule pulling force around centrosomes. Inhibition of PLK1 also reduced the premature separation of centrioles and the PCM dispersal as well. These results revealed the importance of PCM integrity in centriole association. Therefore, we propose that PCM disassembly is one of the driving forces for centriole separation during mitotic exit.
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Affiliation(s)
- Mi Young Seo
- Department of Biological Sciences, Seoul National University, Seoul, Korea
| | - Wonyul Jang
- Department of Biological Sciences, Seoul National University, Seoul, Korea
| | - Kunsoo Rhee
- Department of Biological Sciences, Seoul National University, Seoul, Korea
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43
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Kodani A, Yu TW, Johnson JR, Jayaraman D, Johnson TL, Al-Gazali L, Sztriha L, Partlow JN, Kim H, Krup AL, Dammermann A, Krogan NJ, Walsh CA, Reiter JF. Centriolar satellites assemble centrosomal microcephaly proteins to recruit CDK2 and promote centriole duplication. eLife 2015; 4. [PMID: 26297806 PMCID: PMC4574112 DOI: 10.7554/elife.07519] [Citation(s) in RCA: 101] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Accepted: 08/21/2015] [Indexed: 12/23/2022] Open
Abstract
Primary microcephaly (MCPH) associated proteins CDK5RAP2, CEP152, WDR62 and CEP63 colocalize at the centrosome. We found that they interact to promote centriole duplication and form a hierarchy in which each is required to localize another to the centrosome, with CDK5RAP2 at the apex, and CEP152, WDR62 and CEP63 at sequentially lower positions. MCPH proteins interact with distinct centriolar satellite proteins; CDK5RAP2 interacts with SPAG5 and CEP72, CEP152 with CEP131, WDR62 with MOONRAKER, and CEP63 with CEP90 and CCDC14. These satellite proteins localize their cognate MCPH interactors to centrosomes and also promote centriole duplication. Consistent with a role for satellites in microcephaly, homozygous mutations in one satellite gene, CEP90, may cause MCPH. The satellite proteins, with the exception of CCDC14, and MCPH proteins promote centriole duplication by recruiting CDK2 to the centrosome. Thus, centriolar satellites build a MCPH complex critical for human neurodevelopment that promotes CDK2 centrosomal localization and centriole duplication.
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Affiliation(s)
- Andrew Kodani
- Department of Biochemistry and Biophysics, Cardiovascular Research Institute, University of California, San Francisco, San Francisco, United States
| | - Timothy W Yu
- Howard Hughes Medical Institute, Boston Children's Hospital, Boston, United States
| | - Jeffrey R Johnson
- Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, United States
| | - Divya Jayaraman
- Howard Hughes Medical Institute, Boston Children's Hospital, Boston, United States
| | - Tasha L Johnson
- Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, United States
| | - Lihadh Al-Gazali
- Department of Paediatrics, College of Medicine and Health Sciences, United Arab Emirates University, Al-Ain, United Arab Emirates
| | - Lāszló Sztriha
- Department of Paediatrics, College of Medicine and Health Sciences, United Arab Emirates University, Al-Ain, United Arab Emirates
| | - Jennifer N Partlow
- Howard Hughes Medical Institute, Boston Children's Hospital, Boston, United States
| | - Hanjun Kim
- Department of Biochemistry and Biophysics, Cardiovascular Research Institute, University of California, San Francisco, San Francisco, United States
| | - Alexis L Krup
- Department of Biochemistry and Biophysics, Cardiovascular Research Institute, University of California, San Francisco, San Francisco, United States
| | | | - Nevan J Krogan
- Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, United States
| | - Christopher A Walsh
- Howard Hughes Medical Institute, Boston Children's Hospital, Boston, United States
| | - Jeremy F Reiter
- Department of Biochemistry and Biophysics, Cardiovascular Research Institute, University of California, San Francisco, San Francisco, United States
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44
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Tollenaere MAX, Mailand N, Bekker-Jensen S. Centriolar satellites: key mediators of centrosome functions. Cell Mol Life Sci 2015; 72:11-23. [PMID: 25173771 PMCID: PMC11114028 DOI: 10.1007/s00018-014-1711-3] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2014] [Revised: 08/01/2014] [Accepted: 08/25/2014] [Indexed: 01/18/2023]
Abstract
Centriolar satellites are small, microscopically visible granules that cluster around centrosomes. These structures, which contain numerous proteins directly involved in centrosome maintenance, ciliogenesis, and neurogenesis, have traditionally been viewed as vehicles for protein trafficking towards the centrosome. However, the recent identification of several new centriolar satellite components suggests that this model offers only an incomplete picture of their cellular functions. While the mechanisms controlling centriolar satellite status and function are not yet understood in detail, emerging evidence points to these structures as important hubs for dynamic, multi-faceted regulation in response to a variety of cues. In this review, we summarize the current knowledge of the roles of centriolar satellites in regulating centrosome functions, ciliogenesis, and neurogenesis. We also highlight newly discovered regulatory mechanisms targeting centriolar satellites and their functional status, and we discuss how defects in centriolar satellite components are intimately linked to a wide spectrum of human diseases.
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Affiliation(s)
- Maxim A. X. Tollenaere
- Faculty of Health Sciences, Ubiquitin Signaling Group, The Novo Nordisk Foundation Center for Protein Research, University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen N, Denmark
| | - Niels Mailand
- Faculty of Health Sciences, Ubiquitin Signaling Group, The Novo Nordisk Foundation Center for Protein Research, University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen N, Denmark
| | - Simon Bekker-Jensen
- Faculty of Health Sciences, Ubiquitin Signaling Group, The Novo Nordisk Foundation Center for Protein Research, University of Copenhagen, Blegdamsvej 3B, 2200 Copenhagen N, Denmark
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45
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Kim GS, Kang J, Bang SW, Hwang DS. Cdc6 localizes to S- and G2-phase centrosomes in a cell cycle-dependent manner. Biochem Biophys Res Commun 2014; 456:763-7. [PMID: 25498505 DOI: 10.1016/j.bbrc.2014.12.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Accepted: 12/04/2014] [Indexed: 12/24/2022]
Abstract
The Cdc6 protein has been primarily investigated as a component of the pre-replicative complex for the initiation of chromosome replication, which contributes to maintenance of chromosomal integrity. Here, we show that Cdc6 localized to the centrosomes during S and G2 phases of the cell cycle. The centrosomal localization was mediated by Cdc6 amino acid residues 311-366, which are conserved within other Cdc6 homologues and contains a putative nuclear export signal. Deletions or substitutions of the amino acid residues did not allow the proteins to localize to centrosomes. In contrast, DsRed tag fused to the amino acid residues localized to centrosomes. These results indicated that a centrosome localization signal is contained within amino acid residues 311-366. The cell cycle-dependent centrosomal localization of Cdc6 in S and G2 phases suggest a novel function of Cdc6 in centrosomes.
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Affiliation(s)
- Gwang Su Kim
- Department of Biological Sciences, Seoul National University, Seoul 151-742, Republic of Korea
| | - Jeeheon Kang
- Department of Biological Sciences, Seoul National University, Seoul 151-742, Republic of Korea
| | - Sung Woong Bang
- Department of Biological Sciences, Seoul National University, Seoul 151-742, Republic of Korea
| | - Deog Su Hwang
- Department of Biological Sciences, Seoul National University, Seoul 151-742, Republic of Korea.
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46
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Bonavita R, Walas D, Brown AK, Luini A, Stephens DJ, Colanzi A. Cep126 is required for pericentriolar satellite localisation to the centrosome and for primary cilium formation. Biol Cell 2014; 106:254-67. [PMID: 24867236 PMCID: PMC4293463 DOI: 10.1111/boc.201300087] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Accepted: 05/21/2014] [Indexed: 11/30/2022]
Abstract
Background Information The centrosome is the primary microtubule-organising centre of animal cells and it has crucial roles in several fundamental cellular functions, including cell division, cell polarity, and intracellular transport. The mechanisms responsible for this are not completely understood. Results The poorly characterised protein CEP126 localises to the centrosome, pericentriolar satellites and the base of the primary cilium. Suppression of CEP126 expression results in dispersion of the pericentriolar satellites and disruption of the radial organisation of the microtubules, and induces disorganisation of the mitotic spindle. Moreover, CEP126 depletion or the transfection of a CEP126 truncation mutant in hTERT-RPE-1 and IMCD3 cells impairs the formation of the primary cilium. Conclusions We propose that CEP126 is a regulator of microtubule organisation at the centrosome that acts through modulation of the transport of pericentriolar satellites, and consequently, of the organisation of cell structure.
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Affiliation(s)
- Raffaella Bonavita
- Institute of Protein Biochemistry, National Research Council, Naples, 80131, Italy; Telethon Institute of Genetics and Medicine (TIGEM), Naples, 80131, Italy
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Staples CJ, Myers KN, Beveridge RDD, Patil AA, Howard AE, Barone G, Lee AJX, Swanton C, Howell M, Maslen S, Skehel JM, Boulton SJ, Collis SJ. Ccdc13 is a novel human centriolar satellite protein required for ciliogenesis and genome stability. J Cell Sci 2014; 127:2910-9. [PMID: 24816561 DOI: 10.1242/jcs.147785] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2024] Open
Abstract
Here, we identify coiled-coil domain-containing protein 13 (Ccdc13) in a genome-wide RNA interference screen for regulators of genome stability. We establish that Ccdc13 is a newly identified centriolar satellite protein that interacts with PCM1, Cep290 and pericentrin and prevents the accumulation of DNA damage during mitotic transit. Depletion of Ccdc13 results in the loss of microtubule organisation in a manner similar to PCM1 and Cep290 depletion, although Ccdc13 is not required for satellite integrity. We show that microtubule regrowth is enhanced in Ccdc13-depleted cells, but slowed in cells that overexpress Ccdc13. Furthermore, in serum-starved cells, Ccdc13 localises to the basal body, is required for primary cilia formation and promotes the localisation of the ciliopathy protein BBS4 to both centriolar satellites and cilia. These data highlight the emerging link between DNA damage response factors, centriolar and peri-centriolar satellites and cilia-associated proteins and implicate Ccdc13 as a centriolar satellite protein that functions to promote both genome stability and cilia formation.
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Affiliation(s)
- Christopher J Staples
- Genome Stability Group, CR-UK/YCR Sheffield Cancer Research Centre, Department of Oncology, Academic Unit of Molecular Oncology, University of Sheffield Medical School, Beech Hill Road, Sheffield S10 2RX, UK
| | - Katie N Myers
- Genome Stability Group, CR-UK/YCR Sheffield Cancer Research Centre, Department of Oncology, Academic Unit of Molecular Oncology, University of Sheffield Medical School, Beech Hill Road, Sheffield S10 2RX, UK
| | - Ryan D D Beveridge
- Genome Stability Group, CR-UK/YCR Sheffield Cancer Research Centre, Department of Oncology, Academic Unit of Molecular Oncology, University of Sheffield Medical School, Beech Hill Road, Sheffield S10 2RX, UK
| | - Abhijit A Patil
- Genome Stability Group, CR-UK/YCR Sheffield Cancer Research Centre, Department of Oncology, Academic Unit of Molecular Oncology, University of Sheffield Medical School, Beech Hill Road, Sheffield S10 2RX, UK
| | - Anna E Howard
- Genome Stability Group, CR-UK/YCR Sheffield Cancer Research Centre, Department of Oncology, Academic Unit of Molecular Oncology, University of Sheffield Medical School, Beech Hill Road, Sheffield S10 2RX, UK
| | - Giancarlo Barone
- Genome Stability Group, CR-UK/YCR Sheffield Cancer Research Centre, Department of Oncology, Academic Unit of Molecular Oncology, University of Sheffield Medical School, Beech Hill Road, Sheffield S10 2RX, UK
| | - Alvin J X Lee
- Translational Cancer Therapeutics Laboratory, Cancer Research UK London Research Institute, 44 Lincoln's Inn Fields, London WC2A 3LY, UK
| | - Charles Swanton
- Translational Cancer Therapeutics Laboratory, Cancer Research UK London Research Institute, 44 Lincoln's Inn Fields, London WC2A 3LY, UK
| | - Michael Howell
- High Throughput Screening Facility, CR-UK London Research Institute, 44 Lincoln's Inn Fields London, WC2A 3LY, UK
| | - Sarah Maslen
- Mass Spectrometry Group, The MRC Laboratory of Molecular Biology, Division of Cell Biology, Hills Road, Cambridge, CB2 0QH, UK
| | - J Mark Skehel
- Mass Spectrometry Group, The MRC Laboratory of Molecular Biology, Division of Cell Biology, Hills Road, Cambridge, CB2 0QH, UK
| | - Simon J Boulton
- DNA CR-UK Damage Response Laboratory, London Research Institute, Clare Hall Laboratories, South Mimms, EN6 3LD, UK
| | - Spencer J Collis
- Genome Stability Group, CR-UK/YCR Sheffield Cancer Research Centre, Department of Oncology, Academic Unit of Molecular Oncology, University of Sheffield Medical School, Beech Hill Road, Sheffield S10 2RX, UK
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48
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Maiato H, Logarinho E. Mitotic spindle multipolarity without centrosome amplification. Nat Cell Biol 2014; 16:386-94. [DOI: 10.1038/ncb2958] [Citation(s) in RCA: 110] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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McCloy RA, Rogers S, Caldon CE, Lorca T, Castro A, Burgess A. Partial inhibition of Cdk1 in G 2 phase overrides the SAC and decouples mitotic events. Cell Cycle 2014; 13:1400-12. [PMID: 24626186 PMCID: PMC4050138 DOI: 10.4161/cc.28401] [Citation(s) in RCA: 661] [Impact Index Per Article: 66.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Entry and progression through mitosis has traditionally been linked directly to the activity of cyclin-dependent kinase 1 (Cdk1). In this study we utilized low doses of the Cdk1-specific inhibitor, RO3306 from early G2 phase onwards. Addition of low doses of RO3306 in G2 phase induced minor chromosome congression and segregation defects. In contrast, mild doses of RO3306 during G2 phase resulted in cells entering an aberrant mitosis, with cells fragmenting centrosomes and failing to fully disassemble the nuclear envelope. Cells often underwent cytokinesis and metaphase simultaneously, despite the presence of an active spindle assembly checkpoint, which prevented degradation of cyclin B1 and securin, resulting in the random partitioning of whole chromosomes. This highly aberrant mitosis produced a significant increase in the proportion of viable polyploid cells present up to 3 days post-treatment. Furthermore, cells treated with medium doses of RO3306 were only able to reach the threshold of Cdk1 substrate phosphorylation required to initiate nuclear envelope breakdown, but failed to reach the levels of phosphorylation required to correctly complete pro-metaphase. Treatment with low doses of Okadaic acid, which primarily inhibits PP2A, rescued the mitotic defects and increased the number of cells that completed a normal mitosis. This supports the current model that PP2A is the primary phosphatase that counterbalances the activity of Cdk1 during mitosis. Taken together these results show that continuous and subtle disruption of Cdk1 activity from G2 phase onwards has deleterious consequences on mitotic progression by disrupting the balance between Cdk1 and PP2A.
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Affiliation(s)
- Rachael A McCloy
- The Kinghorn Cancer Centre; Garvan Institute of Medical Research; Sydney, New South Wales, Australia
| | - Samuel Rogers
- The Kinghorn Cancer Centre; Garvan Institute of Medical Research; Sydney, New South Wales, Australia
| | - C Elizabeth Caldon
- The Kinghorn Cancer Centre; Garvan Institute of Medical Research; Sydney, New South Wales, Australia; St. Vincent's Clinical School; Faculty of Medicine; UNSW; Sydney, New South Wales, Australia
| | - Thierry Lorca
- Universités Montpellier 2 et 1; Centre de Recherche de Biochimie Macromoléculaire; CNRS UMR 5237; Montpellier, France
| | - Anna Castro
- Universités Montpellier 2 et 1; Centre de Recherche de Biochimie Macromoléculaire; CNRS UMR 5237; Montpellier, France
| | - Andrew Burgess
- The Kinghorn Cancer Centre; Garvan Institute of Medical Research; Sydney, New South Wales, Australia; St. Vincent's Clinical School; Faculty of Medicine; UNSW; Sydney, New South Wales, Australia
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Cells isolated from human glioblastoma multiforme express progesterone-induced blocking factor (PIBF). Cell Mol Neurobiol 2014; 34:479-89. [PMID: 24474429 DOI: 10.1007/s10571-014-0031-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Accepted: 01/14/2014] [Indexed: 02/08/2023]
Abstract
Glioblastoma multiforme (GBM) is the most common and malignant tumor in the central nervous system. One of the contemporary hypotheses postulates that its pathogenesis is associated with the cancer stem cells (CSCs) which originate from mutations in the normal neural stem cells residing in their specific "niches." Simultaneously with its aggressive development the tumor suppresses the local immune system by different secreted and/or cell expressed factors. Progesterone-induced blocking factor (PIBF) is an immunomodulatory protein with known role in the regulation of the immune response in the reproductive system. Expression of PIBF has been described in some tumors as one of the factors suppressing the anti-tumor immunity. The aim of the present study was to check for the expression of PIBF from cells isolated from six GBMs. To characterize the cultured cells and to study the PIBF expression confocal microscopy, flow cytometry, ELISA, and real-time PCR were used. The results obtained showed expression of markers typical for cancer CSCs and secretion of interleukin 6 by the GBM-derived cultured cells. The results convincingly prove that PIBF is intracellularly expressed by the cultured cells from the all six GBM samples, and this fact is confirmed by three different methods-flow cytometry, confocal microscopy, and real-time PCR. This paper reports for the first time the expression of PIBF by GBM-derived cells cultured in vitro and reveals a new aspect of the immunosuppressive mechanism used by GBM in escaping the immune control.
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