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Sidibé A, Mykuliak VV, Zhang P, Hytönen VP, Wu J, Wehrle-Haller B. Acetyl-NPKY of integrin-β1 binds KINDLIN2 to control endothelial cell proliferation and junctional integrity. iScience 2024; 27:110129. [PMID: 38904068 PMCID: PMC11187247 DOI: 10.1016/j.isci.2024.110129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 02/09/2024] [Accepted: 05/24/2024] [Indexed: 06/22/2024] Open
Abstract
Integrin-dependent crosstalk between cell-matrix adhesions and cell-cell junctions is critical for controlling endothelial permeability and proliferation in cancer and inflammatory diseases but remains poorly understood. Here, we investigated how acetylation of the distal NPKY-motif of Integrin-β1 influences endothelial cell physiology and barrier function. Expression of an acetylation-mimetic β1-K794Q-GFP mutant led to the accumulation of immature cell-matrix adhesions accompanied by a transcriptomic reprograming of endothelial cells, involving genes associated with cell adhesion, proliferation, polarity, and barrier function. β1-K794Q-GFP induced constitutive MAPK signaling, junctional impairment, proliferation, and reduced contact inhibition at confluence. Structural analysis of Integrin-β1 interaction with KINDLIN2, biochemical pulldown assay, and binding energy determination by using molecular dynamics simulation showed that acetylation of K794 and the K794Q-mutant increased KINDLIN2 binding affinity to the Integrin-β1. Thus, enhanced recruitment of KINDLIN2 to Lysine-acetylated Integrin-β1 and resulting modulation of barrier function, offers new therapeutic possibilities for controlling vascular permeability and disease conditions.
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Affiliation(s)
- Adama Sidibé
- Department of Cell Physiology and Metabolism, University of Geneva, Centre Médical Universitaire, Rue Michel-Servet 1, CH-1211 Geneva, Switzerland
| | - Vasyl V. Mykuliak
- Faculty of Medicine and Health Technology, Tampere University, Arvo Ylpön katu 34, FI-33520 Tampere, Finland
| | - Pingfeng Zhang
- Faculty of Medicine and Health Technology, Tampere University, Arvo Ylpön katu 34, FI-33520 Tampere, Finland
| | - Vesa P. Hytönen
- Faculty of Medicine and Health Technology, Tampere University, Arvo Ylpön katu 34, FI-33520 Tampere, Finland
- Fimlab Laboratories, Biokatu 4, FI-33520 Tampere, Finland
| | - Jinhua Wu
- Cancer Signaling and Microenvironment Program, Fox Chase Cancer Center, 333 Cottman Avenue, Philadelphia, PA 19111, USA
| | - Bernhard Wehrle-Haller
- Department of Cell Physiology and Metabolism, University of Geneva, Centre Médical Universitaire, Rue Michel-Servet 1, CH-1211 Geneva, Switzerland
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Aretz J, Aziz M, Strohmeyer N, Sattler M, Fässler R. Talin and kindlin use integrin tail allostery and direct binding to activate integrins. Nat Struct Mol Biol 2023; 30:1913-1924. [PMID: 38087085 PMCID: PMC10716038 DOI: 10.1038/s41594-023-01139-9] [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: 07/14/2022] [Accepted: 09/26/2023] [Indexed: 12/18/2023]
Abstract
Integrin affinity regulation, also termed integrin activation, is essential for metazoan life. Although talin and kindlin binding to the β-integrin cytoplasmic tail is indispensable for integrin activation, it is unknown how they achieve this function. By combining NMR, biochemistry and cell biology techniques, we found that talin and kindlin binding to the β-tail can induce a conformational change that increases talin affinity and decreases kindlin affinity toward it. We also discovered that this asymmetric affinity regulation is accompanied by a direct interaction between talin and kindlin, which promotes simultaneous binding of talin and kindlin to β-tails. Disrupting allosteric communication between the β-tail-binding sites of talin and kindlin or their direct interaction in cells severely compromised integrin functions. These data show how talin and kindlin cooperate to generate a small but critical population of ternary talin-β-integrin-kindlin complexes with high talin-integrin affinity and high dynamics.
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Affiliation(s)
- Jonas Aretz
- Department of Molecular Medicine, Max Planck Institute of Biochemistry, Martinsried, Germany
| | - Masood Aziz
- Department of Bioscience, Technical University of Munich, TUM School of Natural Sciences, Garching, Germany
- Helmholtz Munich, Institute of Structural Biology, Neuherberg, Germany
| | - Nico Strohmeyer
- Department of Biosystems Science and Engineering, Eidgenössische Technische Hochschule Zürich, Basel, Switzerland
| | - Michael Sattler
- Department of Bioscience, Technical University of Munich, TUM School of Natural Sciences, Garching, Germany
- Helmholtz Munich, Institute of Structural Biology, Neuherberg, Germany
| | - Reinhard Fässler
- Department of Molecular Medicine, Max Planck Institute of Biochemistry, Martinsried, Germany.
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3
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Harbuz I, Banciu DD, David R, Cercel C, Cotîrță O, Ciurea BM, Radu SM, Dinescu S, Jinga SI, Banciu A. Perspectives on Scaffold Designs with Roles in Liver Cell Asymmetry and Medical and Industrial Applications by Using a New Type of Specialized 3D Bioprinter. Int J Mol Sci 2023; 24:14722. [PMID: 37834167 PMCID: PMC10573170 DOI: 10.3390/ijms241914722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 09/18/2023] [Accepted: 09/26/2023] [Indexed: 10/15/2023] Open
Abstract
Cellular asymmetry is an important element of efficiency in the compartmentalization of intracellular chemical reactions that ensure efficient tissue function. Improving the current 3D printing methods by using cellular asymmetry is essential in producing complex tissues and organs such as the liver. The use of cell spots containing at least two cells and basement membrane-like bio support materials allows cells to be tethered at two points on the basement membrane and with another cell in order to maintain cell asymmetry. Our model is a new type of 3D bioprinter that uses oriented multicellular complexes with cellular asymmetry. This novel approach is necessary to replace the sequential and slow processes of organogenesis with rapid methods of growth and 3D organ printing. The use of the extracellular matrix in the process of bioprinting with cells allows one to preserve the cellular asymmetry in the 3D printing process and thus preserve the compartmentalization of biological processes and metabolic efficiency.
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Affiliation(s)
- Iuliana Harbuz
- Department of Biomaterials and Medical Devices, Faculty of Medical Engineering, Politehnica University of Bucharest, 1-7 Gh. Polizu Street, 011061 Bucharest, Romania; (I.H.); (O.C.); (B.M.C.); (S.I.J.)
| | - Daniel Dumitru Banciu
- Department of Biomaterials and Medical Devices, Faculty of Medical Engineering, Politehnica University of Bucharest, 1-7 Gh. Polizu Street, 011061 Bucharest, Romania; (I.H.); (O.C.); (B.M.C.); (S.I.J.)
| | - Rodica David
- Institute for Research on the Quality of Society and the Sciences of Education, University Constantin Brancusi of Targu Jiu, Republicii 1, 210185 Targu Jiu, Romania;
- Department of Mechanical Industrial and Transportation Engineering, University of Petrosani, 332006 Petrosani, Romania; (S.M.R.); (S.D.)
| | - Cristina Cercel
- University of Medicine and Pharmacy “Carol Davila” Bucharest, 37 Dionisie Lupu Street, 020021 Bucharest, Romania;
| | - Octavian Cotîrță
- Department of Biomaterials and Medical Devices, Faculty of Medical Engineering, Politehnica University of Bucharest, 1-7 Gh. Polizu Street, 011061 Bucharest, Romania; (I.H.); (O.C.); (B.M.C.); (S.I.J.)
| | - Bogdan Marius Ciurea
- Department of Biomaterials and Medical Devices, Faculty of Medical Engineering, Politehnica University of Bucharest, 1-7 Gh. Polizu Street, 011061 Bucharest, Romania; (I.H.); (O.C.); (B.M.C.); (S.I.J.)
| | - Sorin Mihai Radu
- Department of Mechanical Industrial and Transportation Engineering, University of Petrosani, 332006 Petrosani, Romania; (S.M.R.); (S.D.)
| | - Stela Dinescu
- Department of Mechanical Industrial and Transportation Engineering, University of Petrosani, 332006 Petrosani, Romania; (S.M.R.); (S.D.)
| | - Sorin Ion Jinga
- Department of Biomaterials and Medical Devices, Faculty of Medical Engineering, Politehnica University of Bucharest, 1-7 Gh. Polizu Street, 011061 Bucharest, Romania; (I.H.); (O.C.); (B.M.C.); (S.I.J.)
| | - Adela Banciu
- Department of Biomaterials and Medical Devices, Faculty of Medical Engineering, Politehnica University of Bucharest, 1-7 Gh. Polizu Street, 011061 Bucharest, Romania; (I.H.); (O.C.); (B.M.C.); (S.I.J.)
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4
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Matino L, Mariano A, Ausilio C, Garg R, Cohen-Karni T, Santoro F. Modulation of Early Stage Neuronal Outgrowth through Out-of-Plane Graphene. NANO LETTERS 2022; 22:8633-8640. [PMID: 36301701 DOI: 10.1021/acs.nanolett.2c03171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The correct wiring of a neural network requires neuron to integrate an incredible repertoire of cues found in their extracellular environment. The astonishing efficiency of this process plays a pivotal role in the correct wiring of the brain during development and axon regeneration. Biologically inspired micro- and nanostructured substrates have been shown to regulate axonal outgrowth. In parallel, several studies investigated graphene's potential as a conductive neural interface, able to enhance cell adhesion, neurite sprouting and outgrowth. Here, we engineered a 3D single- to few-layer fuzzy graphene morphology (3DFG), 3DFG on a collapsed Si nanowire (SiNW) mesh template (NT-3DFGc), and 3DFG on a noncollapsed SiNW mesh template (NT-3DFGnc) as neural-instructive materials. The micrometric protruding features of the NWs templates dictated neuronal growth cone establishment, as well as influencing axon elongation and branching. Furthermore, neurons-to-graphene coupling was investigated with comprehensive view of integrin-mediated contact adhesion points and plasma membrane curvature processes.
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Affiliation(s)
- Laura Matino
- Tissue Electronics, Istituto Italiano di Tecnologia, Naples 80125, Italy
- Dipartimento di Ingegneria Chimica, dei Materiali e delle Produzioni Industriali, DICMAPI, Università "Federico II", Naples 80125, Italy
| | - Anna Mariano
- Tissue Electronics, Istituto Italiano di Tecnologia, Naples 80125, Italy
| | - Chiara Ausilio
- Tissue Electronics, Istituto Italiano di Tecnologia, Naples 80125, Italy
| | - Raghav Garg
- Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Tzahi Cohen-Karni
- Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Francesca Santoro
- Tissue Electronics, Istituto Italiano di Tecnologia, Naples 80125, Italy
- Faculty of Electrical Engineering and IT, RWTH Aachen 52074, Germany
- Institute for Biological Information Processing-Bioelectronics, IBI-3, Forschungszentrum Juelich 52428, Germany
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5
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Bhattacharjya S. The structural basis of β2 integrin intra-cellular multi-protein complexes. Biophys Rev 2022; 14:1183-1195. [PMID: 36345283 PMCID: PMC9636337 DOI: 10.1007/s12551-022-00995-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 08/24/2022] [Indexed: 01/03/2023] Open
Abstract
In multicellular organisms, cell adhesion is a pivotal physiological process which is essential for cell-cell communications, cell migration, and interactions with extracellular matrix. Integrins, a family of large hetero-dimeric type I membrane proteins, are known for driving cell adhesion functions. Among 24 different integrins, four β2 integrins, αL β2, αM β2, αX β2 and αD β2, are specific for cell adhesion and migration of leukocytes. Many cytosolic proteins interact with short cytosolic tails (CTs) of β2 and other integrins which are essential in bi-directional signaling processes. Further, phosphorylation of CTs of integrins regulates binding of intra-cellular proteins and signaling systems. In this review, recent advances in structures and interactions of multi-protein complexes of integrin tails, with a focus on β2 integrin, and cytosolic proteins are discussed along with a proposed future direction.
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Affiliation(s)
- Surajit Bhattacharjya
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore, 637551 Singapore
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Gahmberg CG, Grönholm M, Madhavan S. Regulation of Dynamic Cell Adhesion by Integrin-Integrin Crosstalk. Cells 2022; 11:cells11101685. [PMID: 35626722 PMCID: PMC9140058 DOI: 10.3390/cells11101685] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 05/11/2022] [Accepted: 05/17/2022] [Indexed: 02/07/2023] Open
Abstract
Most cells express several integrins. The integrins are able to respond to various cellular functions and needs by modifying their own activation state, but in addition by their ability to regulate each other by activation or inhibition. This crosstalk or transdominant regulation is strictly controlled. The mechanisms resulting in integrin crosstalk are incompletely understood, but they often involve intracellular signalling routes also used by other cell surface receptors. Several studies show that the integrin cytoplasmic tails bind to a number of cytoskeletal and adaptor molecules in a regulated manner. Recent work has shown that phosphorylations of integrins and key intracellular molecules are of pivotal importance in integrin-cytoplasmic interactions, and these in turn affect integrin activity and crosstalk. The integrin β-chains play a central role in regulating crosstalk. In addition to Integrin-integrin crosstalk, crosstalk may also occur between integrins and related receptors, including other adhesion receptors, growth factor and SARS-CoV-2 receptors.
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Affiliation(s)
- Carl G. Gahmberg
- Molecular and Integrative Biosciences Research Program, Faculty of Biological and Environmental Sciences, University of Helsinki, Viikinkaari 9 C, 00014 Helsinki, Finland; (M.G.); (S.M.)
- Correspondence: ; Tel.: +358-50-539-9439
| | - Mikaela Grönholm
- Molecular and Integrative Biosciences Research Program, Faculty of Biological and Environmental Sciences, University of Helsinki, Viikinkaari 9 C, 00014 Helsinki, Finland; (M.G.); (S.M.)
- Drug Research Program, Faculty of Pharmacy, University of Helsinki, Viikinkaari 9 C, 00014 Helsinki, Finland
| | - Sudarrshan Madhavan
- Molecular and Integrative Biosciences Research Program, Faculty of Biological and Environmental Sciences, University of Helsinki, Viikinkaari 9 C, 00014 Helsinki, Finland; (M.G.); (S.M.)
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