1
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Vissol-Gaudin E, Pearson C, Groves C, Zeze DA, Cantiello HF, Cantero MDR, Petty MC. Electrical behaviour and evolutionary computation in thin films of bovine brain microtubules. Sci Rep 2021; 11:10776. [PMID: 34031499 PMCID: PMC8144580 DOI: 10.1038/s41598-021-90260-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 04/12/2021] [Indexed: 11/10/2022] Open
Abstract
We report on the electrical behaviour of thin films of bovine brain microtubules (MTs). For samples in both their dried and hydrated states, the measured currents reveal a power law dependence on the applied DC voltage. We attribute this to the injection of space-charge from the metallic electrode(s). The MTs are thought to form a complex electrical network, which can be manipulated with an applied voltage. This feature has been exploited to undertake some experiments on the use of the MT mesh as a medium for computation. We show that it is possible to evolve MT films into binary classifiers following an evolution in materio approach. The accuracy of the system is, on average, similar to that of early carbon nanotube classifiers developed using the same methodology.
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Affiliation(s)
| | - Chris Pearson
- Department of Engineering, Durham University, South Road, Durham, DH1 3LE, UK
| | - Chris Groves
- Department of Engineering, Durham University, South Road, Durham, DH1 3LE, UK
| | - Dagou A Zeze
- Department of Engineering, Durham University, South Road, Durham, DH1 3LE, UK
| | - Horacio F Cantiello
- Laboratorio de Canales Iónicos, Instituto Multidisciplinario de Salud, Tecnología Y Desarrollo (IMSaTeD, CONICET-UNSE), Villa El Zanjón, 4206, Santiago del Estero, Argentina
| | - María Del Rocio Cantero
- Laboratorio de Canales Iónicos, Instituto Multidisciplinario de Salud, Tecnología Y Desarrollo (IMSaTeD, CONICET-UNSE), Villa El Zanjón, 4206, Santiago del Estero, Argentina
| | - Michael C Petty
- Department of Engineering, Durham University, South Road, Durham, DH1 3LE, UK.
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2
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Nolasco S, Bellido J, Serna M, Carmona B, Soares H, Zabala JC. Colchicine Blocks Tubulin Heterodimer Recycling by Tubulin Cofactors TBCA, TBCB, and TBCE. Front Cell Dev Biol 2021; 9:656273. [PMID: 33968934 PMCID: PMC8100514 DOI: 10.3389/fcell.2021.656273] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 03/29/2021] [Indexed: 11/17/2022] Open
Abstract
Colchicine has been used to treat gout and, more recently, to effectively prevent autoinflammatory diseases and both primary and recurrent episodes of pericarditis. The anti-inflammatory action of colchicine seems to result from irreversible inhibition of tubulin polymerization and microtubule (MT) assembly by binding to the tubulin heterodimer, avoiding the signal transduction required to the activation of the entire NLRP3 inflammasome. Emerging results show that the MT network is a potential regulator of cardiac mechanics. Here, we investigated how colchicine impacts in tubulin folding cofactors TBCA, TBCB, and TBCE activities. We show that TBCA is abundant in mouse heart insoluble protein extracts. Also, a decrease of the TBCA/β-tubulin complex followed by an increase of free TBCA is observed in human cells treated with colchicine. The presence of free TBCA is not observed in cells treated with other anti-mitotic agents such as nocodazole or cold shock, neither after translation inhibition by cycloheximide. In vitro assays show that colchicine inhibits tubulin heterodimer dissociation by TBCE/TBCB, probably by interfering with interactions of TBCE with tubulin dimers, leading to free TBCA. Manipulation of TBCA levels, either by RNAi or overexpression results in decreased levels of tubulin heterodimers. Together, these data strongly suggest that TBCA is mainly receiving β-tubulin from the dissociation of pre-existing heterodimers instead of newly synthesized tubulins. The TBCE/TBCB+TBCA system is crucial for controlling the critical concentration of free tubulin heterodimers and MT dynamics in the cells by recycling the tubulin heterodimers. It is conceivable that colchicine affects tubulin heterodimer recycling through the TBCE/TBCB+TBCA system producing the known benefits in the treatment of pericardium inflammation.
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Affiliation(s)
- Sofia Nolasco
- Faculdade de Medicina Veterinária, CIISA - Centro de Investigação Interdisciplinar em Sanidade Animal, Universidade de Lisboa, Lisbon, Portugal.,Escola Superior de Tecnologia da Saúde de Lisboa, Instituto Politécnico de Lisboa, Lisbon, Portugal
| | - Javier Bellido
- Departamento de Biología Molecular, Facultad de Medicina, Universidad de Cantabria, Santander, Spain
| | - Marina Serna
- Spanish National Cancer Research Center, CNIO, Madrid, Spain
| | - Bruno Carmona
- Escola Superior de Tecnologia da Saúde de Lisboa, Instituto Politécnico de Lisboa, Lisbon, Portugal.,Centro de Química Estrutural - Faculdade de Ciências da Universidade de Lisboa, Lisbon, Portugal
| | - Helena Soares
- Escola Superior de Tecnologia da Saúde de Lisboa, Instituto Politécnico de Lisboa, Lisbon, Portugal.,Centro de Química Estrutural - Faculdade de Ciências da Universidade de Lisboa, Lisbon, Portugal
| | - Juan Carlos Zabala
- Departamento de Biología Molecular, Facultad de Medicina, Universidad de Cantabria, Santander, Spain
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3
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Martin-Cofreces NB, Chichon FJ, Calvo E, Torralba D, Bustos-Moran E, Dosil SG, Rojas-Gomez A, Bonzon-Kulichenko E, Lopez JA, Otón J, Sorrentino A, Zabala JC, Vernos I, Vazquez J, Valpuesta JM, Sanchez-Madrid F. The chaperonin CCT controls T cell receptor-driven 3D configuration of centrioles. SCIENCE ADVANCES 2020; 6:eabb7242. [PMID: 33268369 PMCID: PMC7821906 DOI: 10.1126/sciadv.abb7242] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 10/19/2020] [Indexed: 05/17/2023]
Abstract
T lymphocyte activation requires the formation of immune synapses (IS) with antigen-presenting cells. The dynamics of membrane receptors, signaling scaffolds, microfilaments, and microtubules at the IS determine the potency of T cell activation and subsequent immune response. Here, we show that the cytosolic chaperonin CCT (chaperonin-containing TCP1) controls the changes in reciprocal orientation of the centrioles and polarization of the tubulin dynamics induced by T cell receptor in T lymphocytes forming an IS. CCT also controls the mitochondrial ultrastructure and the metabolic status of T cells, regulating the de novo synthesis of tubulin as well as posttranslational modifications (poly-glutamylation, acetylation, Δ1 and Δ2) of αβ-tubulin heterodimers, fine-tuning tubulin dynamics. These changes ultimately determine the function and organization of the centrioles, as shown by three-dimensional reconstruction of resting and stimulated primary T cells using cryo-soft x-ray tomography. Through this mechanism, CCT governs T cell activation and polarity.
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Affiliation(s)
- N B Martin-Cofreces
- Immunology Service, Hospital Universitario de la Princesa, UAM, IIS-IP. Madrid, 28006 Spain.
- Area of Vascular Pathophysiology, Laboratory of Intercellular Communication, Fundación Centro Nacional de Investigaciones Cardiovasculares-Carlos III, Madrid, 28029 Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), 28029 Spain
| | - F J Chichon
- Department of Macromolecular Structure, Computational Systems Biology Group, Centro Nacional de Biotecnología (CNB-CSIC), Madrid, 28049, Spain
| | - E Calvo
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), 28029 Spain
- Laboratory of Cardiovascular Proteomics. Fundación Centro Nacional de Investigaciones Cardiovasculares-Carlos III, Madrid, 28029 Spain
| | - D Torralba
- Immunology Service, Hospital Universitario de la Princesa, UAM, IIS-IP. Madrid, 28006 Spain
- Area of Vascular Pathophysiology, Laboratory of Intercellular Communication, Fundación Centro Nacional de Investigaciones Cardiovasculares-Carlos III, Madrid, 28029 Spain
| | - E Bustos-Moran
- Immunology Service, Hospital Universitario de la Princesa, UAM, IIS-IP. Madrid, 28006 Spain
- Area of Vascular Pathophysiology, Laboratory of Intercellular Communication, Fundación Centro Nacional de Investigaciones Cardiovasculares-Carlos III, Madrid, 28029 Spain
| | - S G Dosil
- Immunology Service, Hospital Universitario de la Princesa, UAM, IIS-IP. Madrid, 28006 Spain
- Area of Vascular Pathophysiology, Laboratory of Intercellular Communication, Fundación Centro Nacional de Investigaciones Cardiovasculares-Carlos III, Madrid, 28029 Spain
| | - A Rojas-Gomez
- Immunology Service, Hospital Universitario de la Princesa, UAM, IIS-IP. Madrid, 28006 Spain
- Area of Vascular Pathophysiology, Laboratory of Intercellular Communication, Fundación Centro Nacional de Investigaciones Cardiovasculares-Carlos III, Madrid, 28029 Spain
| | - E Bonzon-Kulichenko
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), 28029 Spain
- Laboratory of Cardiovascular Proteomics. Fundación Centro Nacional de Investigaciones Cardiovasculares-Carlos III, Madrid, 28029 Spain
| | - J A Lopez
- Laboratory of Cardiovascular Proteomics. Fundación Centro Nacional de Investigaciones Cardiovasculares-Carlos III, Madrid, 28029 Spain
| | - J Otón
- Structural Studies Division, MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, UK
| | - A Sorrentino
- ALBA Synchrotron Light Source, Cerdanyola del Vallès, Barcelona 08290, Spain
| | - J C Zabala
- Departament of Molecular Biology, Facultad de Medicina, Universidad de Cantabria, Santander, 39005 Spain
| | - I Vernos
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Dr Aiguader 88, Barcelona, 08003, Spain
- Universitat Pompeu Fabra (UPF), Dr Aiguader 88, Barcelona 08003, Spain
- ICREA, Pg. Lluis Companys 23, Barcelona 08010, Spain
| | - J Vazquez
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), 28029 Spain
- Laboratory of Cardiovascular Proteomics. Fundación Centro Nacional de Investigaciones Cardiovasculares-Carlos III, Madrid, 28029 Spain
| | - J M Valpuesta
- Department of Macromolecular Structure, Computational Systems Biology Group, Centro Nacional de Biotecnología (CNB-CSIC), Madrid, 28049, Spain.
| | - F Sanchez-Madrid
- Immunology Service, Hospital Universitario de la Princesa, UAM, IIS-IP. Madrid, 28006 Spain.
- Area of Vascular Pathophysiology, Laboratory of Intercellular Communication, Fundación Centro Nacional de Investigaciones Cardiovasculares-Carlos III, Madrid, 28029 Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), 28029 Spain
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4
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Cantero M, Gutierrez BC, Cantiello HF. Actin filaments modulate electrical activity of brain microtubule protein two‐dimensional sheets. Cytoskeleton (Hoboken) 2020; 77:167-177. [DOI: 10.1002/cm.21596] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 01/09/2020] [Accepted: 01/10/2020] [Indexed: 01/09/2023]
Affiliation(s)
- María Cantero
- Laboratorio de Canales IónicosInstituto Multidisciplinario de Salud, Tecnología y Desarrollo (IMSaTeD, UNSE‐CONICET) Santiago del Estero Argentina
| | - Brenda C. Gutierrez
- Laboratorio de Canales IónicosInstituto Multidisciplinario de Salud, Tecnología y Desarrollo (IMSaTeD, UNSE‐CONICET) Santiago del Estero Argentina
| | - Horacio F. Cantiello
- Laboratorio de Canales IónicosInstituto Multidisciplinario de Salud, Tecnología y Desarrollo (IMSaTeD, UNSE‐CONICET) Santiago del Estero Argentina
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5
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Bullmann T, Feneberg E, Kretzschmann TP, Ogunlade V, Holzer M, Arendt T. Hibernation Impairs Odor Discrimination - Implications for Alzheimer's Disease. Front Neuroanat 2019; 13:69. [PMID: 31379517 PMCID: PMC6646461 DOI: 10.3389/fnana.2019.00069] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 06/21/2019] [Indexed: 11/13/2022] Open
Abstract
Reversible formation of PHF-like phosphorylated tau, an early feature of Alzheimer's disease (AD) was previously shown to occur in torpor during hibernation in the Golden hamster (Syrian hamster, Mesocricetus auratus). Here, we tackled the question to what extent hibernating Golden hamsters can serve as a model for the early stage of AD. During early AD, anosmia, the loss of olfactory function, is a common and typical feature. We, thus, investigated tau phosphorylation, synaptic plasticity and behavioral physiology of the olfactory system during hibernation. Tau was phosphorylated on several AD-relevant epitopes, and distribution of PHF-like phosphorylated tau in the olfactory bulb was quite similar to what is seen in AD. Tau phosphorylation was not associated with a destabilization of microtubules and did not lead to fibril formation. Previously, we observed a transient spine reduction in pyramidal cells in the hippocampus, which is correlated with the distribution of phosphorylated tau. Here we show that granule cells in the olfactory bulb are devoid of phosphorylated tau and maintain their spines number during torpor. No reduction of synaptic proteins was observed. However, hibernation did impair the recall performance in a two-odor discrimination task. We conclude that hibernation is associated with a specific olfactory memory deficit, which might not be attributed to the formation of PHF-like phosphorylated tau within the olfactory bulb. We discuss a possible involvement of modulatory input provided by cholinergic neurons in the basal forebrain, which are affected by hibernation.
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Affiliation(s)
- Torsten Bullmann
- Department of Molecular and Cellular Mechanisms of Neurodegeneration, Paul Flechsig Institute for Brain Research, University of Leipzig, Leipzig, Germany
| | - Emily Feneberg
- Department of Molecular and Cellular Mechanisms of Neurodegeneration, Paul Flechsig Institute for Brain Research, University of Leipzig, Leipzig, Germany
| | - Tanja Petra Kretzschmann
- Department of Molecular and Cellular Mechanisms of Neurodegeneration, Paul Flechsig Institute for Brain Research, University of Leipzig, Leipzig, Germany
| | - Vera Ogunlade
- Department of Neuropathology, University of Leipzig, Leipzig, Germany
| | - Max Holzer
- Department of Molecular and Cellular Mechanisms of Neurodegeneration, Paul Flechsig Institute for Brain Research, University of Leipzig, Leipzig, Germany
| | - Thomas Arendt
- Department of Molecular and Cellular Mechanisms of Neurodegeneration, Paul Flechsig Institute for Brain Research, University of Leipzig, Leipzig, Germany
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6
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A centrosomal protein FOR20 regulates microtubule assembly dynamics and plays a role in cell migration. Biochem J 2017; 474:2841-2859. [DOI: 10.1042/bcj20170303] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 07/03/2017] [Accepted: 07/10/2017] [Indexed: 11/17/2022]
Abstract
Here, we report that a centrosomal protein FOR20 [FOP (FGFR1 (fibroblast growth factor receptor 1) oncogene protein)-like protein of molecular mass of 20 kDa; also named as C16orf63, FLJ31153 or PHSECRG2] can regulate the assembly and stability of microtubules. Both FOR20 IgG antibody and GST (glutathione S-transferase)-tagged FOR20 could precipitate tubulin from the HeLa cell extract, indicating a possible interaction between FOR20 and tubulin. FOR20 was also detected in goat brain tissue extract and it cycled with microtubule-associated proteins. Furthermore, FOR20 bound to purified tubulin and inhibited the assembly of tubulin in vitro. The overexpression of FOR20 depolymerized interphase microtubules and the depletion of FOR20 prevented nocodazole-induced depolymerization of microtubules in HeLa cells. In addition, the depletion of FOR20 suppressed the dynamics of individual microtubules in live HeLa cells. FOR20-depleted MDA-MB-231 cells displayed zigzag motion and migrated at a slower rate than the control cells, indicating that FOR20 plays a role in directed cell migration. The results suggested that the centrosomal protein FOR20 is a new member of the microtubule-associated protein family and that it regulates the assembly and dynamics of microtubules.
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7
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Cantero MDR, Perez PL, Smoler M, Villa Etchegoyen C, Cantiello HF. Electrical Oscillations in Two-Dimensional Microtubular Structures. Sci Rep 2016; 6:27143. [PMID: 27256791 PMCID: PMC4891677 DOI: 10.1038/srep27143] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Accepted: 05/11/2016] [Indexed: 12/27/2022] Open
Abstract
Microtubules (MTs) are unique components of the cytoskeleton formed by hollow cylindrical structures of αβ tubulin dimeric units. The structural wall of the MT is interspersed by nanopores formed by the lateral arrangement of its subunits. MTs are also highly charged polar polyelectrolytes, capable of amplifying electrical signals. The actual nature of these electrodynamic capabilities remains largely unknown. Herein we applied the patch clamp technique to two-dimensional MT sheets, to characterize their electrical properties. Voltage-clamped MT sheets generated cation-selective oscillatory electrical currents whose magnitude depended on both the holding potential, and ionic strength and composition. The oscillations progressed through various modes including single and double periodic regimes and more complex behaviours, being prominent a fundamental frequency at 29 Hz. In physiological K(+) (140 mM), oscillations represented in average a 640% change in conductance that was also affected by the prevalent anion. Current injection induced voltage oscillations, thus showing excitability akin with action potentials. The electrical oscillations were entirely blocked by taxol, with pseudo Michaelis-Menten kinetics and a KD of ~1.29 μM. The findings suggest a functional role of the nanopores in the MT wall on the genesis of electrical oscillations that offer new insights into the nonlinear behaviour of the cytoskeleton.
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Affiliation(s)
- María del Rocío Cantero
- Cátedra de Biofísica, Facultad de Odontología. Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Paula L. Perez
- Cátedra de Biofísica, Facultad de Odontología. Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Mariano Smoler
- Cátedra de Biofísica, Facultad de Odontología. Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Cecilia Villa Etchegoyen
- Cátedra de Biofísica, Facultad de Odontología. Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Horacio F. Cantiello
- Cátedra de Biofísica, Facultad de Odontología. Universidad de Buenos Aires, Buenos Aires, Argentina
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8
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Serna M, Carranza G, Martín-Benito J, Janowski R, Canals A, Coll M, Zabala JC, Valpuesta JM. The structure of the complex between α-tubulin, TBCE and TBCB reveals a tubulin dimer dissociation mechanism. J Cell Sci 2015; 128:1824-34. [PMID: 25908846 DOI: 10.1242/jcs.167387] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Accepted: 03/16/2015] [Indexed: 11/20/2022] Open
Abstract
Tubulin proteostasis is regulated by a group of molecular chaperones termed tubulin cofactors (TBC). Whereas tubulin heterodimer formation is well-characterized biochemically, its dissociation pathway is not clearly understood. Here, we carried out biochemical assays to dissect the role of the human TBCE and TBCB chaperones in α-tubulin-β-tubulin dissociation. We used electron microscopy and image processing to determine the three-dimensional structure of the human TBCE, TBCB and α-tubulin (αEB) complex, which is formed upon α-tubulin-β-tubulin heterodimer dissociation by the two chaperones. Docking the atomic structures of domains of these proteins, including the TBCE UBL domain, as we determined by X-ray crystallography, allowed description of the molecular architecture of the αEB complex. We found that heterodimer dissociation is an energy-independent process that takes place through a disruption of the α-tubulin-β-tubulin interface that is caused by a steric interaction between β-tubulin and the TBCE cytoskeleton-associated protein glycine-rich (CAP-Gly) and leucine-rich repeat (LRR) domains. The protruding arrangement of chaperone ubiquitin-like (UBL) domains in the αEB complex suggests that there is a direct interaction of this complex with the proteasome, thus mediating α-tubulin degradation.
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Affiliation(s)
- Marina Serna
- Departamento de Estructura de Macromoléculas, Centro Nacional de Biotecnología (CNB-CSIC), Madrid 28049, Spain
| | - Gerardo Carranza
- Departamento de Biología Molecular, Facultad de Medicina, IDIVAL-Universidad de Cantabria, Santander 39011, Spain
| | - Jaime Martín-Benito
- Departamento de Estructura de Macromoléculas, Centro Nacional de Biotecnología (CNB-CSIC), Madrid 28049, Spain
| | - Robert Janowski
- Departamento de Biología Estructural y Computacional, Institute for Research in Biomedicine (IRB-Barcelona), Barcelona 08028, Spain Departamento de Biología Estructural, Institut de Biologia Molecular de Barcelona (IBMB-CSIC), Barcelona 08028, Spain
| | - Albert Canals
- Departamento de Biología Estructural y Computacional, Institute for Research in Biomedicine (IRB-Barcelona), Barcelona 08028, Spain Departamento de Biología Estructural, Institut de Biologia Molecular de Barcelona (IBMB-CSIC), Barcelona 08028, Spain
| | - Miquel Coll
- Departamento de Biología Estructural y Computacional, Institute for Research in Biomedicine (IRB-Barcelona), Barcelona 08028, Spain Departamento de Biología Estructural, Institut de Biologia Molecular de Barcelona (IBMB-CSIC), Barcelona 08028, Spain
| | - Juan Carlos Zabala
- Departamento de Biología Molecular, Facultad de Medicina, IDIVAL-Universidad de Cantabria, Santander 39011, Spain
| | - José María Valpuesta
- Departamento de Estructura de Macromoléculas, Centro Nacional de Biotecnología (CNB-CSIC), Madrid 28049, Spain
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9
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Wu KCW, Yang CY, Cheng CM. Using cell structures to develop functional nanomaterials and nanostructures – case studies of actin filaments and microtubules. Chem Commun (Camb) 2014; 50:4148-57. [DOI: 10.1039/c4cc00005f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Actin filaments and microtubules are utilized as building blocks to create functional nanomaterials and nanostructures for nature-inspired small-scale devices and systems.
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Affiliation(s)
- Kevin Chia-Wen Wu
- Department of Chemical Engineering
- National Taiwan University
- Taipei 10617, Taiwan
| | - Chung-Yao Yang
- Institute of Nanoengineering and Microsystems
- National Tsing Hua University
- Hsinchu 30013, Taiwan
| | - Chao-Min Cheng
- Institute of Nanoengineering and Microsystems
- National Tsing Hua University
- Hsinchu 30013, Taiwan
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10
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Carranza G, Castaño R, Fanarraga ML, Villegas JC, Gonçalves J, Soares H, Avila J, Marenchino M, Campos-Olivas R, Montoya G, Zabala JC. Autoinhibition of TBCB regulates EB1-mediated microtubule dynamics. Cell Mol Life Sci 2013; 70:357-71. [PMID: 22940919 PMCID: PMC11113326 DOI: 10.1007/s00018-012-1114-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2012] [Revised: 07/26/2012] [Accepted: 07/31/2012] [Indexed: 12/22/2022]
Abstract
Tubulin cofactors (TBCs) participate in the folding, dimerization, and dissociation pathways of the tubulin dimer. Among them, TBCB and TBCE are two CAP-Gly domain-containing proteins that together efficiently interact with and dissociate the tubulin dimer. In the study reported here we showed that TBCB localizes at spindle and midzone microtubules during mitosis. Furthermore, the motif DEI/M-COO(-) present in TBCB, which is similar to the EEY/F-COO(-) element characteristic of EB proteins, CLIP-170, and α-tubulin, is required for TBCE-TBCB heterodimer formation and thus for tubulin dimer dissociation. This motif is responsible for TBCB autoinhibition, and our analysis suggests that TBCB is a monomer in solution. Mutants of TBCB lacking this motif are derepressed and induce microtubule depolymerization through an interaction with EB1 associated with microtubule tips. TBCB is also able to bind to the chaperonin complex CCT containing α-tubulin, suggesting that it could escort tubulin to facilitate its folding and dimerization, recycling or degradation.
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Affiliation(s)
- Gerardo Carranza
- Departamento de Biología Molecular, Facultad de Medicina, IFIMAV-Universidad de Cantabria, 39011 Santander, Spain
| | - Raquel Castaño
- Departamento de Biología Molecular, Facultad de Medicina, IFIMAV-Universidad de Cantabria, 39011 Santander, Spain
| | - Mónica L. Fanarraga
- Departamento de Biología Molecular, Facultad de Medicina, IFIMAV-Universidad de Cantabria, 39011 Santander, Spain
| | - Juan Carlos Villegas
- Departamento de Anatomía y Biología Celular, Facultad de Medicina, IFIMAV-Universidad de Cantabria, 39011 Santander, Spain
| | - João Gonçalves
- Centro de Química eBioquímica, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisbon, Portugal
- Instituto Gulbenkian de Ciência, Ap. 14, 2781-901 Oeiras, Portugal
- Escola Superior de Tecnologia, Saude de Lisboa, 1990-096 Lisbon, Portugal
- Present Address: Samuel Lunenfeld Research Institute, Mount Sinai Hospital, 600 University Avenue, Room 1070, Toronto, ON M5G 1X5 Canada
| | - Helena Soares
- Centro de Química eBioquímica, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisbon, Portugal
- Instituto Gulbenkian de Ciência, Ap. 14, 2781-901 Oeiras, Portugal
- Escola Superior de Tecnologia, Saude de Lisboa, 1990-096 Lisbon, Portugal
| | - Jesus Avila
- Centro de Biología Molecular (CSIC-UAM), Universidad Autónoma de Madrid, 28049 Cantoblanco, Madrid, Spain
| | - Marco Marenchino
- Spectroscopy and NMR Unit, Structural Biology and Biocomputing Program, Spanish National Cancer Research Center (CNIO), Melchor Fdez. Almagro 3, 28029 Madrid, Spain
| | - Ramón Campos-Olivas
- Spectroscopy and NMR Unit, Structural Biology and Biocomputing Program, Spanish National Cancer Research Center (CNIO), Melchor Fdez. Almagro 3, 28029 Madrid, Spain
| | - Guillermo Montoya
- Macromolecular Crystallography Group, Structural Biology and Biocomputing Program, Spanish National Cancer Research Center (CNIO), Melchor Fdez. Almagro 3, 28029 Madrid, Spain
| | - Juan Carlos Zabala
- Departamento de Biología Molecular, Facultad de Medicina, IFIMAV-Universidad de Cantabria, 39011 Santander, Spain
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11
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Luo S, Garcia-Arencibia M, Zhao R, Puri C, Toh PPC, Sadiq O, Rubinsztein DC. Bim inhibits autophagy by recruiting Beclin 1 to microtubules. Mol Cell 2012; 47:359-70. [PMID: 22742832 PMCID: PMC3419265 DOI: 10.1016/j.molcel.2012.05.040] [Citation(s) in RCA: 164] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2011] [Revised: 04/19/2012] [Accepted: 05/17/2012] [Indexed: 12/23/2022]
Abstract
Bim is a proapoptotic BH3-only Bcl-2 family member. In response to death stimuli, Bim dissociates from the dynein light chain 1 (DYNLL1/LC8), where it is inactive, and can then initiate Bax/Bak-mediated mitochondria-dependent apoptosis. We found that Bim depletion increases autophagosome synthesis in cells and in vivo, and this effect is inhibited by overexpression of cell death-deficient Bim. Bim inhibits autophagy by interacting with Beclin 1, an autophagy regulator, and this interaction is facilitated by LC8. Bim bridges the Beclin 1-LC8 interaction and thereby inhibits autophagy by mislocalizing Beclin 1 to the dynein motor complex. Starvation, an autophagic stimulus, induces Bim phosphorylation, which abrogates LC8 binding to Bim, leading to dissociation of Bim and Beclin 1. Our data suggest that Bim switches locations between apoptosis-inactive/autophagy-inhibitory and apoptosis-active/autophagy-permissive sites.
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Affiliation(s)
- Shouqing Luo
- Department of Medical Genetics, Cambridge Institute for Medical Research, University of Cambridge, Cambridge CB2 0XY, UK
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Garcia-Mayoral MF, Castaño R, Fanarraga ML, Zabala JC, Rico M, Bruix M. The solution structure of the N-terminal domain of human tubulin binding cofactor C reveals a platform for tubulin interaction. PLoS One 2011; 6:e25912. [PMID: 22028797 PMCID: PMC3196536 DOI: 10.1371/journal.pone.0025912] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2011] [Accepted: 09/13/2011] [Indexed: 01/11/2023] Open
Abstract
Human Tubulin Binding Cofactor C (TBCC) is a post-chaperonin involved in the folding and assembly of α- and β-tubulin monomers leading to the release of productive tubulin heterodimers ready to polymerize into microtubules. In this process it collaborates with other cofactors (TBC's A, B, D, and E) and forms a supercomplex with TBCD, β-tubulin, TBCE and α-tubulin. Here, we demonstrate that TBCC depletion results in multipolar spindles and mitotic failure. Accordingly, TBCC is found at the centrosome and is implicated in bipolar spindle formation. We also determine by NMR the structure of the N-terminal domain of TBCC. The TBCC N-terminal domain adopts a spectrin-like fold topology composed of a left-handed 3-stranded α-helix bundle. Remarkably, the 30-residue N-terminal segment of the TBCC N-terminal domain is flexible and disordered in solution. This unstructured region is involved in the interaction with tubulin. Our data lead us to propose a testable model for TBCC N-terminal domain/tubulin recognition in which the highly charged N-terminus as well as residues from the three helices and the loops interact with the acidic hypervariable regions of tubulin monomers.
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Affiliation(s)
- Mª Flor Garcia-Mayoral
- Departamento de Química Física Biológica, Instituto de Química Física Rocasolano, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - Raquel Castaño
- Departamento de Biología Molecular, Instituto de Formación e Investigación Marqués de Valdecilla, Facultad de Medicina, Universidad de Cantabria, Santander, Spain
| | - Monica L. Fanarraga
- Departamento de Biología Molecular, Instituto de Formación e Investigación Marqués de Valdecilla, Facultad de Medicina, Universidad de Cantabria, Santander, Spain
| | - Juan Carlos Zabala
- Departamento de Biología Molecular, Instituto de Formación e Investigación Marqués de Valdecilla, Facultad de Medicina, Universidad de Cantabria, Santander, Spain
| | - Manuel Rico
- Departamento de Química Física Biológica, Instituto de Química Física Rocasolano, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - Marta Bruix
- Departamento de Química Física Biológica, Instituto de Química Física Rocasolano, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
- * E-mail:
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Zhang J, Zhou J, Ren X, Diao Y, Li H, Jiang H, Ding K, Pei D. A new diaryl urea compound, D181, induces cell cycle arrest in the G1 and M phases by targeting receptor tyrosine kinases and the microtubule skeleton. Invest New Drugs 2010; 30:490-507. [DOI: 10.1007/s10637-010-9577-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2010] [Accepted: 10/28/2010] [Indexed: 12/16/2022]
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Fanarraga ML, Carranza G, Castaño R, Nolasco S, Avila J, Zabala JC. Nondenaturing electrophoresis as a tool to investigate tubulin complexes. Methods Cell Biol 2010; 95:59-75. [PMID: 20466130 DOI: 10.1016/s0091-679x(10)95005-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/24/2023]
Abstract
A protein molecule may exist as a monomer, homo-oligomer, or hetero-oligomer in a multiprotein complex. One-dimensional (1-D) native electrophoresis has long been used to characterize tubulins and their complexes. In this chapter, we describe the simplest way to identify the state of aggregation of commercial or homemade tubulins for further studies based on 1-D electrophoresis under nondenaturing conditions. We present a series of detailed protocols that can be used to analyze the maturation of alpha- and beta-tubulins and to identify the complexes formed during the folding and dimerization pathway as well as their stability.
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Affiliation(s)
- Mónica López Fanarraga
- Departamento de Biología Molecular, Facultad de Medicina, IFIMAV-Universidad de Cantabria, 39011 Santander, Spain
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