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Nandan A, Das A, Lott R, Koseska A. Cells use molecular working memory to navigate inchanging chemoattractant fields. eLife 2022; 11:76825. [PMID: 35666122 PMCID: PMC9282860 DOI: 10.7554/elife.76825] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 06/03/2022] [Indexed: 11/13/2022] Open
Abstract
In order to migrate over large distances, cells within tissues and organisms rely on sensing local gradient cues which are irregular, conflicting, and changing over time and space. The mechanism how they generate persistent directional migration when signals are disrupted, while still remaining adaptive to signal's localization changes remain unknown. Here we find that single cells utilize a molecular mechanism akin to a working memory to satisfy these two opposing demands. We derive theoretically that this is characteristic for receptor networks maintained away from steady states. Time-resolved live-cell imaging of Epidermal growth factor receptor (EGFR) phosphorylation dynamics shows that cells transiently memorize position of encountered signals via slow-escaping remnant of the polarized signaling state, a dynamical 'ghost', driving memory-guided persistent directional migration. The metastability of this state further enables migrational adaptation when encountering new signals. We thus identify basic mechanism of real-time computations underlying cellular navigation in changing chemoattractant fields.
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Affiliation(s)
- Akhilesh Nandan
- Cellular Computations and Learning, Max Planck Institute for Neurobiology of Behavior - caesar, Bonn, Germany
| | - Abhishek Das
- Cellular Computations and Learning, Max Planck Institute for Neurobiology of Behavior - caesar, Bonn, Germany
| | - Robert Lott
- Cellular Computations and Learning, Max Planck Institute for Neurobiology of Behavior - caesar, Bonn, Germany
| | - Aneta Koseska
- Department of Systemic Cell Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany
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2
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Stanoev A, Mhamane A, Schuermann KC, Grecco HE, Stallaert W, Baumdick M, Brüggemann Y, Joshi MS, Roda-Navarro P, Fengler S, Stockert R, Roßmannek L, Luig J, Koseska A, Bastiaens PIH. Interdependence between EGFR and Phosphatases Spatially Established by Vesicular Dynamics Generates a Growth Factor Sensing and Responding Network. Cell Syst 2018; 7:295-309.e11. [PMID: 30145116 PMCID: PMC6167251 DOI: 10.1016/j.cels.2018.06.006] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 12/22/2017] [Accepted: 06/07/2018] [Indexed: 12/20/2022]
Abstract
The proto-oncogenic epidermal growth factor receptor (EGFR) is a tyrosine kinase whose sensitivity to growth factors and signal duration determines cellular behavior. We resolve how EGFR's response to epidermal growth factor (EGF) originates from dynamically established recursive interactions with spatially organized protein tyrosine phosphatases (PTPs). Reciprocal genetic PTP perturbations enabled identification of receptor-like PTPRG/J at the plasma membrane and ER-associated PTPN2 as the major EGFR dephosphorylating activities. Imaging spatial-temporal PTP reactivity revealed that vesicular trafficking establishes a spatially distributed negative feedback with PTPN2 that determines signal duration. On the other hand, single-cell dose-response analysis uncovered a reactive oxygen species-mediated toggle switch between autocatalytically activated monomeric EGFR and the tumor suppressor PTPRG that governs EGFR's sensitivity to EGF. Vesicular recycling of monomeric EGFR unifies the interactions with these PTPs on distinct membrane systems, dynamically generating a network architecture that can sense and respond to time-varying growth factor signals.
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Affiliation(s)
- Angel Stanoev
- Department of Systemic Cell Biology, Max Planck Institute for Molecular Physiology, 44227 Dortmund, Germany
| | - Amit Mhamane
- Department of Systemic Cell Biology, Max Planck Institute for Molecular Physiology, 44227 Dortmund, Germany
| | - Klaus C Schuermann
- Department of Systemic Cell Biology, Max Planck Institute for Molecular Physiology, 44227 Dortmund, Germany
| | - Hernán E Grecco
- Department of Systemic Cell Biology, Max Planck Institute for Molecular Physiology, 44227 Dortmund, Germany
| | - Wayne Stallaert
- Department of Systemic Cell Biology, Max Planck Institute for Molecular Physiology, 44227 Dortmund, Germany
| | - Martin Baumdick
- Department of Systemic Cell Biology, Max Planck Institute for Molecular Physiology, 44227 Dortmund, Germany
| | - Yannick Brüggemann
- Department of Systemic Cell Biology, Max Planck Institute for Molecular Physiology, 44227 Dortmund, Germany; Faculty of Chemistry and Chemical Biology, TU Dortmund, 44227 Dortmund, Germany
| | - Maitreyi S Joshi
- Department of Systemic Cell Biology, Max Planck Institute for Molecular Physiology, 44227 Dortmund, Germany
| | - Pedro Roda-Navarro
- Department of Systemic Cell Biology, Max Planck Institute for Molecular Physiology, 44227 Dortmund, Germany
| | - Sven Fengler
- Department of Systemic Cell Biology, Max Planck Institute for Molecular Physiology, 44227 Dortmund, Germany
| | - Rabea Stockert
- Department of Systemic Cell Biology, Max Planck Institute for Molecular Physiology, 44227 Dortmund, Germany
| | - Lisaweta Roßmannek
- Department of Systemic Cell Biology, Max Planck Institute for Molecular Physiology, 44227 Dortmund, Germany
| | - Jutta Luig
- Department of Systemic Cell Biology, Max Planck Institute for Molecular Physiology, 44227 Dortmund, Germany
| | - Aneta Koseska
- Department of Systemic Cell Biology, Max Planck Institute for Molecular Physiology, 44227 Dortmund, Germany; Faculty of Chemistry and Chemical Biology, TU Dortmund, 44227 Dortmund, Germany.
| | - Philippe I H Bastiaens
- Department of Systemic Cell Biology, Max Planck Institute for Molecular Physiology, 44227 Dortmund, Germany; Faculty of Chemistry and Chemical Biology, TU Dortmund, 44227 Dortmund, Germany.
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3
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Baumdick M, Gelléri M, Uttamapinant C, Beránek V, Chin JW, Bastiaens PIH. A conformational sensor based on genetic code expansion reveals an autocatalytic component in EGFR activation. Nat Commun 2018; 9:3847. [PMID: 30242154 PMCID: PMC6155120 DOI: 10.1038/s41467-018-06299-7] [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] [Received: 05/04/2018] [Accepted: 08/10/2018] [Indexed: 12/26/2022] Open
Abstract
Epidermal growth factor receptor (EGFR) activation by growth factors (GFs) relies on dimerization and allosteric activation of its intrinsic kinase activity, resulting in trans-phosphorylation of tyrosines on its C-terminal tail. While structural and biochemical studies identified this EGF-induced allosteric activation, imaging collective EGFR activation in cells and molecular dynamics simulations pointed at additional catalytic EGFR activation mechanisms. To gain more insight into EGFR activation mechanisms in living cells, we develop a Förster resonance energy transfer (FRET)-based conformational EGFR indicator (CONEGI) using genetic code expansion that reports on conformational transitions in the EGFR activation loop. Comparing conformational transitions, self-association and auto-phosphorylation of CONEGI and its Y845F mutant reveals that Y845 phosphorylation induces a catalytically active conformation in EGFR monomers. This conformational transition depends on EGFR kinase activity and auto-phosphorylation on its C-terminal tail, generating a looped causality that leads to autocatalytic amplification of EGFR phosphorylation at low EGF dose. Upon ligand binding epidermal growth factor receptor (EGFR) dimerizes and activates its intrinsic kinase to auto-phosphorylate EGFR. Here, the authors engineer and image a FRET-based conformational EGFR indicator which reveals that activation loop phosphorylation induces a catalytically active conformation in EGFR monomers.
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Affiliation(s)
- Martin Baumdick
- Department of Systemic Cell Biology, Max Planck Institute of Molecular Physiology, Otto-Hahn-Street 11, 44227, Dortmund, Germany
| | - Márton Gelléri
- Department of Systemic Cell Biology, Max Planck Institute of Molecular Physiology, Otto-Hahn-Street 11, 44227, Dortmund, Germany.,Faculty of Chemistry and Chemical Biology, Technical University Dortmund, Otto-Hahn-Street 6, 44227, Dortmund, Germany
| | - Chayasith Uttamapinant
- Medical Research Council Laboratory of Molecular Biology, Cambridge Biomedical Campus, Francis Crick Avenue, Cambridge, CB2 0QH, UK
| | - Václav Beránek
- Medical Research Council Laboratory of Molecular Biology, Cambridge Biomedical Campus, Francis Crick Avenue, Cambridge, CB2 0QH, UK
| | - Jason W Chin
- Medical Research Council Laboratory of Molecular Biology, Cambridge Biomedical Campus, Francis Crick Avenue, Cambridge, CB2 0QH, UK.
| | - Philippe I H Bastiaens
- Department of Systemic Cell Biology, Max Planck Institute of Molecular Physiology, Otto-Hahn-Street 11, 44227, Dortmund, Germany. .,Faculty of Chemistry and Chemical Biology, Technical University Dortmund, Otto-Hahn-Street 6, 44227, Dortmund, Germany.
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4
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Rosier BJHM, Cremers GAO, Engelen W, Merkx M, Brunsveld L, de Greef TFA. Incorporation of native antibodies and Fc-fusion proteins on DNA nanostructures via a modular conjugation strategy. Chem Commun (Camb) 2018; 53:7393-7396. [PMID: 28617516 PMCID: PMC5708335 DOI: 10.1039/c7cc04178k] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A photocrosslinkable protein G adapter was used to site-specifically conjugate complex native proteins to oligonucleotides, allowing for efficient incorporation on DNA origami nanostructures.
A photocrosslinkable protein G variant was used as an adapter protein to covalently and site-specifically conjugate an antibody and an Fc-fusion protein to an oligonucleotide. This modular approach enables straightforward decoration of DNA nanostructures with complex native proteins while retaining their innate binding affinity, allowing precise control over the nanoscale spatial organization of such proteins for in vitro and in vivo biomedical applications.
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Affiliation(s)
- Bas J H M Rosier
- Laboratory of Chemical Biology and Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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5
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Agrawalla BK, Wang T, Riegger A, Domogalla MP, Steinbrink K, Dörfler T, Chen X, Boldt F, Lamla M, Michaelis J, Kuan SL, Weil T. Chemoselective Dual Labeling of Native and Recombinant Proteins. Bioconjug Chem 2017; 29:29-34. [PMID: 29231709 PMCID: PMC6242188 DOI: 10.1021/acs.bioconjchem.7b00675] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The attachment of two different functionalities in a site-selective fashion represents a great challenge in protein chemistry. We report site specific dual functionalizations of peptides and proteins capitalizing on reactivity differences of cysteines in their free (thiol) and protected, oxidized (disulfide) forms. The dual functionalization of interleukin 2 and EYFP proceeded with no loss of bioactivity in a stepwise fashion applying maleimide and disulfide rebridging allyl-sulfone groups. In order to ensure broader applicability of the functionalization strategy, a novel, short peptide sequence that introduces a disulfide bridge was designed and site-selective dual labeling in the presence of biogenic groups was successfully demonstrated.
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Affiliation(s)
| | - Tao Wang
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University , Chengdu 610031, P.R. China
| | - Andreas Riegger
- Max-Planck-Institute for Polymer Research , Ackermannweg 10, 55128 Mainz, Germany
| | - Matthias P Domogalla
- Max-Planck-Institute for Polymer Research , Ackermannweg 10, 55128 Mainz, Germany.,Department of Dermatology, University Medical Center Mainz, Johannes Gutenberg-University Mainz , Mainz D-55099, Germany
| | - Kerstin Steinbrink
- Department of Dermatology, University Medical Center Mainz, Johannes Gutenberg-University Mainz , Mainz D-55099, Germany
| | | | | | | | | | | | - Seah Ling Kuan
- Max-Planck-Institute for Polymer Research , Ackermannweg 10, 55128 Mainz, Germany
| | - Tanja Weil
- Max-Planck-Institute for Polymer Research , Ackermannweg 10, 55128 Mainz, Germany
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6
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Wang T, Riegger A, Lamla M, Wiese S, Oeckl P, Otto M, Wu Y, Fischer S, Barth H, Kuan SL, Weil T. Water-soluble allyl sulfones for dual site-specific labelling of proteins and cyclic peptides. Chem Sci 2016; 7:3234-3239. [PMID: 29997815 PMCID: PMC6006486 DOI: 10.1039/c6sc00005c] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2016] [Accepted: 01/27/2016] [Indexed: 12/19/2022] Open
Abstract
Allyl sulfones as efficient disulfide rebridging agents for site-specific protein modifications with up to two additional functionalities in water.
Water-soluble allyl sulfones provide convenient site-specific disulfide rebridging of native proteins and cyclic peptides. The site-selective functionalization of (a) the peptide hormone somatostatin, (b) the interchain disulfide of bovine insulin and (c) functionalization of the proteins GFP and lysozyme with allyl sulfones proceeds in aqueous solution. Allyl sulfones offer three functionalizable sites that react with thiol containing molecules in a step-wise fashion. Dual labeling of proteins and cyclic peptides is achieved i.e. the attachment of a chromophore and an affinity tag in a single reaction step, which is of great significance for the construction of precise multifunctional peptide and protein conjugates.
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Affiliation(s)
- Tao Wang
- Institute of Organic Chemistry III , Ulm University , Albert-Einstein-Allee 11 , D-89081 Ulm , Germany .
| | - Andreas Riegger
- Institute of Organic Chemistry III , Ulm University , Albert-Einstein-Allee 11 , D-89081 Ulm , Germany .
| | - Markus Lamla
- Institute of Organic Chemistry III , Ulm University , Albert-Einstein-Allee 11 , D-89081 Ulm , Germany .
| | - Sebastian Wiese
- Core Unit Mass Spectrometry and Proteomics , University of Ulm Medical Center , D-89081 Ulm , Germany
| | - Patrick Oeckl
- Department of Neurology , University of Ulm Medical Center , Oberer Eselsberg 45 , D-89081 Ulm , Germany
| | - Markus Otto
- Department of Neurology , University of Ulm Medical Center , Oberer Eselsberg 45 , D-89081 Ulm , Germany
| | - Yuzhou Wu
- Institute of Organic Chemistry III , Ulm University , Albert-Einstein-Allee 11 , D-89081 Ulm , Germany .
| | - Stephan Fischer
- Institute of Pharmacology and Toxicology , University of Ulm Medical Center , Albert-Einstein-Allee 11 , D-89081 Ulm , Germany
| | - Holger Barth
- Institute of Pharmacology and Toxicology , University of Ulm Medical Center , Albert-Einstein-Allee 11 , D-89081 Ulm , Germany
| | - Seah Ling Kuan
- Institute of Organic Chemistry III , Ulm University , Albert-Einstein-Allee 11 , D-89081 Ulm , Germany .
| | - Tanja Weil
- Institute of Organic Chemistry III , Ulm University , Albert-Einstein-Allee 11 , D-89081 Ulm , Germany .
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7
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Baumann F, Bauer MS, Milles LF, Alexandrovich A, Gaub HE, Pippig DA. Monovalent Strep-Tactin for strong and site-specific tethering in nanospectroscopy. NATURE NANOTECHNOLOGY 2016; 11:89-94. [PMID: 26457965 DOI: 10.1038/nnano.2015.231] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Accepted: 09/03/2015] [Indexed: 06/05/2023]
Abstract
Strep-Tactin, an engineered form of streptavidin, binds avidly to the genetically encoded peptide Strep-tag II in a manner comparable to streptavidin binding to biotin. These interactions have been used in protein purification and detection applications. However, in single-molecule studies, for example using atomic force microscopy-based single-molecule force spectroscopy (AFM-SMFS), the tetravalency of these systems impedes the measurement of monodispersed data. Here, we introduce a monovalent form of Strep-Tactin that harbours a unique binding site for Strep-tag II and a single cysteine that allows Strep-Tactin to specifically attach to the atomic force microscope cantilever and form a consistent pulling geometry to obtain homogeneous rupture data. Using AFM-SMFS, the mechanical properties of the interaction between Strep-tag II and monovalent Strep-Tactin were characterized. Rupture forces comparable to biotin:streptavidin unbinding were observed. Using titin kinase and green fluorescent protein, we show that monovalent Strep-Tactin is generally applicable to protein unfolding experiments. We expect monovalent Strep-Tactin to be a reliable anchoring tool for a range of single-molecule studies.
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Affiliation(s)
- Fabian Baumann
- Center for Nanoscience and Department of Physics, Ludwig Maximilians University of Munich, Amalienstraße 54, Munich 80799, Germany
| | - Magnus S Bauer
- Center for Nanoscience and Department of Physics, Ludwig Maximilians University of Munich, Amalienstraße 54, Munich 80799, Germany
| | - Lukas F Milles
- Center for Nanoscience and Department of Physics, Ludwig Maximilians University of Munich, Amalienstraße 54, Munich 80799, Germany
| | - Alexander Alexandrovich
- Randall Division of Cell and Molecular Biophysics and Cardiovascular Division, New Hunt's House, King's College London, London SE1 1UL, UK
| | - Hermann E Gaub
- Center for Nanoscience and Department of Physics, Ludwig Maximilians University of Munich, Amalienstraße 54, Munich 80799, Germany
| | - Diana A Pippig
- Center for Nanoscience and Department of Physics, Ludwig Maximilians University of Munich, Amalienstraße 54, Munich 80799, Germany
- Center for Integrated Protein Science Munich, Ludwig Maximilians University of Munich, Butenandtstraße 5-13, Munich 81377, Germany
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8
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Baumdick M, Brüggemann Y, Schmick M, Xouri G, Sabet O, Davis L, Chin JW, Bastiaens PIH. EGF-dependent re-routing of vesicular recycling switches spontaneous phosphorylation suppression to EGFR signaling. eLife 2015; 4. [PMID: 26609808 PMCID: PMC4716840 DOI: 10.7554/elife.12223] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2015] [Accepted: 11/25/2015] [Indexed: 11/17/2022] Open
Abstract
Autocatalytic activation of epidermal growth factor receptor (EGFR) coupled to dephosphorylating activity of protein tyrosine phosphatases (PTPs) ensures robust yet diverse responses to extracellular stimuli. The inevitable tradeoff of this plasticity is spontaneous receptor activation and spurious signaling. We show that a ligand-mediated switch in EGFR trafficking enables suppression of spontaneous activation while maintaining EGFR’s capacity to transduce extracellular signals. Autocatalytic phosphorylation of tyrosine 845 on unliganded EGFR monomers is suppressed by vesicular recycling through perinuclear areas with high PTP1B activity. Ligand-binding results in phosphorylation of the c-Cbl docking tyrosine and ubiquitination of the receptor. This secondary signal relies on EGF-induced EGFR self-association and switches suppressive recycling to directional trafficking. The re-routing regulates EGFR signaling response by the transit-time to late endosomes where it is switched-off by high PTP1B activity. This ubiquitin-mediated switch in EGFR trafficking is a uniquely suited solution to suppress spontaneous activation while maintaining responsiveness to EGF. DOI:http://dx.doi.org/10.7554/eLife.12223.001 In living tissue, the ability of individual cells to grow is influenced by signal molecules in the environment around each cell. For example, after an injury, a molecule called epidermal growth factor can stimulate cells to grow to repair the wound. Epidermal growth factor binds to and activates a receptor protein called EGFR, which faces outwards from the cell surface. However, this signal needs to be switched off again afterwards to prevent the cells from growing too much. Epidermal growth factor activates EGFR by triggering a process called “autophosphorylation”, in which EGFR attaches molecules called phosphates to itself. To quench the signal, EGFRs that are bound to growth factors are removed from the cell surface and taken into the cell in small membrane bubbles called vesicles. Enzymes called phosphatases near the cell nucleus remove the phosphate groups and thereby switch the receptors off, before the receptors are ultimately destroyed. However, EGFR autophosphorylation can also happen spontaneously in the absence of growth factor, so it was not clear how the cell is able to distinguish between this spontaneous activation and a genuine signal. Baumdick, Brüggemann, Schmick, Xouri et al. used biochemical techniques to address this question. The experiments show that EGFRs that have become spontaneously active are also removed from the cell surface in vesicles. However, unlike the EGFRs that are bound to growth factors, the spontaneously active receptors are recycled back to the membrane. On the way, their activity is also switched off by encountering phosphatases so that they are not active when they reach the cell surface again. The experiments also show that EGFRs are targeted for destruction by the presence of a tag called ubiquitin, which is added to the receptor in response to the binding of growth factor. Therefore, Baumdick et al.’s findings show that epidermal growth factor controls a switch that alters the way active EGFRs are processed in cells. This system acts to suppress the spontaneous activation of EGFRs, whilst maintaining the ability of the cell to respond to epidermal growth factor. The next challenge is to understand how the location of the phosphatases inside the cell influences when and how the EGFRs respond to this external signal. DOI:http://dx.doi.org/10.7554/eLife.12223.002
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Affiliation(s)
- Martin Baumdick
- Department of Systemic Cell Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany
| | - Yannick Brüggemann
- Department of Systemic Cell Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany.,Faculty of Chemistry and Chemical Biology, Technical University of Dortmund, Dortmund, Germany
| | - Malte Schmick
- Department of Systemic Cell Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany
| | - Georgia Xouri
- Department of Systemic Cell Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany
| | - Ola Sabet
- Department of Systemic Cell Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany
| | - Lloyd Davis
- Medical Research Council Laboratory of Molecular Biology, Cambridge, United Kingdom
| | - Jason W Chin
- Medical Research Council Laboratory of Molecular Biology, Cambridge, United Kingdom
| | - Philippe I H Bastiaens
- Department of Systemic Cell Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany.,Faculty of Chemistry and Chemical Biology, Technical University of Dortmund, Dortmund, Germany
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9
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Ibach J, Radon Y, Gelléri M, Sonntag MH, Brunsveld L, Bastiaens PIH, Verveer PJ. Single Particle Tracking Reveals that EGFR Signaling Activity Is Amplified in Clathrin-Coated Pits. PLoS One 2015; 10:e0143162. [PMID: 26575183 PMCID: PMC4648588 DOI: 10.1371/journal.pone.0143162] [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: 06/19/2015] [Accepted: 11/02/2015] [Indexed: 01/08/2023] Open
Abstract
Signaling from the epidermal growth factor receptor (EGFR) via phosphorylation on its C-terminal tyrosine residues requires self-association, which depends on the diffusional properties of the receptor and its density in the plasma membrane. Dimerization is a key event for EGFR activation, but the role of higher order clustering is unknown. We employed single particle tracking to relate the mobility and aggregation of EGFR to its signaling activity. EGFR mobility alternates between short-lived free, confined and immobile states. In the immobile state, EGFR tends to aggregate in clathrin-coated pits, which is further enhanced in a phosphorylation-dependent manner and does not require ligand binding. EGFR phosphorylation is further amplified by cross-phosphorylation in clathrin-coated pits. Because phosphorylated receptors can escape from the pits, local gradients of signaling active EGFR are formed. These results show that amplification of EGFR phosphorylation by receptor clustering in clathrin-coated pits supports signal activation at the plasma membrane.
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Affiliation(s)
- Jenny Ibach
- Department of Systemic Cell Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany
| | - Yvonne Radon
- Department of Systemic Cell Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany
| | - Márton Gelléri
- Department of Systemic Cell Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany
| | - Michael H. Sonntag
- Laboratory of Chemical Biology, Department of Biomedical Engineering, and Institute of Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, The Netherlands
| | - Luc Brunsveld
- Laboratory of Chemical Biology, Department of Biomedical Engineering, and Institute of Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, The Netherlands
| | - Philippe I. H. Bastiaens
- Department of Systemic Cell Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany
| | - Peter J. Verveer
- Department of Systemic Cell Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany
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