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  1. Article ; Online: Tight junctions.

    Balda, Maria S / Matter, Karl

    Current biology : CB

    2023  Volume 33, Issue 21, Page(s) R1135–R1140

    Abstract: Various functions within our bodies require the generation and maintenance of compartments with distinct compositions, which in turn necessitate the formation of semipermeable cellular diffusion barriers. For example, the blood-brain barrier protects the ...

    Abstract Various functions within our bodies require the generation and maintenance of compartments with distinct compositions, which in turn necessitate the formation of semipermeable cellular diffusion barriers. For example, the blood-brain barrier protects the brain by allowing only specific molecules to pass through. Another instance is the intestinal barrier, which allows the uptake of essential nutrients, while restricting the passage of pathogenic molecules and bacteria. Breakdown of such barriers causes various pathologies, such as brain or retinal edema, or diarrhoea. Epithelia and endothelia are the most common barrier-forming cells. Individual cells in such barriers are held together by cell-cell adhesion structures - also known as intercellular junctions - that are essential for barrier formation and maintenance. Here, we will focus on the structure and assembly of tight junctions (TJs) and their functions as barriers, but will refer to other adhesive structures crucial for barrier regulation such as adherens junctions (AJs) and focal adhesions to the extracellular matrix (ECM) (Figure 1A,B). We will also discuss additional functions of TJs in cell surface polarity and the regulation of gene expression, cell function, and cell behaviour.
    MeSH term(s) Tight Junctions/metabolism ; Intercellular Junctions/metabolism ; Cell Adhesion ; Adherens Junctions/metabolism ; Brain
    Language English
    Publishing date 2023-11-07
    Publishing country England
    Document type Journal Article
    ZDB-ID 1071731-6
    ISSN 1879-0445 ; 0960-9822
    ISSN (online) 1879-0445
    ISSN 0960-9822
    DOI 10.1016/j.cub.2023.09.027
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: ZO-1 Regulates Hippo-Independent YAP Activity and Cell Proliferation via a GEF-H1- and TBK1-Regulated Signalling Network.

    Haas, Alexis J / Karakus, Mert / Zihni, Ceniz / Balda, Maria S / Matter, Karl

    Cells

    2024  Volume 13, Issue 7

    Abstract: Tight junctions are a barrier-forming cell-cell adhesion complex and have been proposed to regulate cell proliferation. However, the underlying mechanisms are not well understood. Here, we used cells deficient in the junction scaffold ZO-1 alone or ... ...

    Abstract Tight junctions are a barrier-forming cell-cell adhesion complex and have been proposed to regulate cell proliferation. However, the underlying mechanisms are not well understood. Here, we used cells deficient in the junction scaffold ZO-1 alone or together with its paralog ZO-2, which disrupts the junctional barrier. We found that ZO-1 knockout increased cell proliferation, induced loss of cell density-dependent proliferation control, and promoted apoptosis and necrosis. These phenotypes were enhanced by double ZO-1/ZO-2 knockout. Increased proliferation was dependent on two transcriptional regulators: YAP and ZONAB. ZO-1 knockout stimulated YAP nuclear translocation and activity without changes in Hippo-dependent phosphorylation. Knockout promoted TANK-binding kinase 1 (TBK1) activation and increased expression of the RhoA activator GEF-H1. Knockdown of ZO-3, another paralog interacting with ZO1, was sufficient to induce GEF-H1 expression and YAP activity. GEF-H1, TBK1, and mechanotransduction at focal adhesions were found to cooperate to activate YAP/TEAD in ZO-1-deficient cells. Thus, ZO-1 controled cell proliferation and Hippo-independent YAP activity by activating a GEF-H1- and TBK1-regulated mechanosensitive signalling network.
    MeSH term(s) Cell Proliferation ; Guanine Nucleotide Exchange Factors/genetics ; Guanine Nucleotide Exchange Factors/metabolism ; Mechanotransduction, Cellular ; Phosphorylation ; Signal Transduction ; Animals ; Madin Darby Canine Kidney Cells ; Dogs
    Chemical Substances Guanine Nucleotide Exchange Factors
    Language English
    Publishing date 2024-04-05
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2661518-6
    ISSN 2073-4409 ; 2073-4409
    ISSN (online) 2073-4409
    ISSN 2073-4409
    DOI 10.3390/cells13070640
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Correction: The Tight Junction Associated Signalling Proteins ZO-1 and ZONAB Regulate Retinal Pigment Epithelium Homeostasis in Mice.

    Georgiadis, Anastasios / Tschernutter, Marion / Bainbridge, James W B / Balaggan, Kamaljit S / Mowat, Freya / West, Emma L / Munro, Peter M G / Thrasher, Adrian J / Matter, Karl / Balda, Maria S / Ali, Robin R

    PloS one

    2023  Volume 18, Issue 12, Page(s) e0295782

    Abstract: This corrects the article DOI: 10.1371/journal.pone.0015730.]. ...

    Abstract [This corrects the article DOI: 10.1371/journal.pone.0015730.].
    Language English
    Publishing date 2023-12-07
    Publishing country United States
    Document type Published Erratum
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0295782
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: ARHGEF18/p114RhoGEF Coordinates PKA/CREB Signaling and Actomyosin Remodeling to Promote Trophoblast Cell-Cell Fusion During Placenta Morphogenesis.

    Beal, Robert / Alonso-Carriazo Fernandez, Ana / Grammatopoulos, Dimitris K / Matter, Karl / Balda, Maria S

    Frontiers in cell and developmental biology

    2021  Volume 9, Page(s) 658006

    Abstract: Coordination of cell-cell adhesion, actomyosin dynamics and gene expression is crucial for morphogenetic processes underlying tissue and organ development. Rho GTPases are main regulators of the cytoskeleton and adhesion. They are activated by guanine ... ...

    Abstract Coordination of cell-cell adhesion, actomyosin dynamics and gene expression is crucial for morphogenetic processes underlying tissue and organ development. Rho GTPases are main regulators of the cytoskeleton and adhesion. They are activated by guanine nucleotide exchange factors in a spatially and temporally controlled manner. However, the roles of these Rho GTPase activators during complex developmental processes are still poorly understood. ARHGEF18/p114RhoGEF is a tight junction-associated RhoA activator that forms complexes with myosin II, and regulates actomyosin contractility. Here we show that p114RhoGEF/ARHGEF18 is required for mouse syncytiotrophoblast differentiation and placenta development.
    Language English
    Publishing date 2021-03-25
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2737824-X
    ISSN 2296-634X
    ISSN 2296-634X
    DOI 10.3389/fcell.2021.658006
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Tight junctions as regulators of tissue remodelling.

    Balda, Maria S / Matter, Karl

    Current opinion in cell biology

    2016  Volume 42, Page(s) 94–101

    Abstract: Formation of tissue barriers by epithelial and endothelial cells requires neighbouring cells to interact via intercellular junctions, which includes tight junctions. Tight junctions form a semipermeable paracellular diffusion barrier and act as ... ...

    Abstract Formation of tissue barriers by epithelial and endothelial cells requires neighbouring cells to interact via intercellular junctions, which includes tight junctions. Tight junctions form a semipermeable paracellular diffusion barrier and act as signalling hubs that guide cell behaviour and differentiation. Components of tight junctions are also expressed in cell types not forming tight junctions, such as cardiomyocytes, where they associate with facia adherens and/or gap junctions. This review will focus on tight junction proteins and their importance in tissue homeostasis and remodelling with a particular emphasis on what we have learned from animal models and human diseases.
    MeSH term(s) Animals ; Cell Differentiation ; Cell Polarity ; Cytoplasm/metabolism ; Humans ; Organ Specificity ; Tight Junction Proteins/metabolism ; Tight Junctions/metabolism
    Chemical Substances Tight Junction Proteins
    Language English
    Publishing date 2016-05-26
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 1026381-0
    ISSN 1879-0410 ; 0955-0674
    ISSN (online) 1879-0410
    ISSN 0955-0674
    DOI 10.1016/j.ceb.2016.05.006
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: ZO-1 Guides Tight Junction Assembly and Epithelial Morphogenesis via Cytoskeletal Tension-Dependent and -Independent Functions.

    Haas, Alexis J / Zihni, Ceniz / Krug, Susanne M / Maraspini, Riccardo / Otani, Tetsuhisa / Furuse, Mikio / Honigmann, Alf / Balda, Maria S / Matter, Karl

    Cells

    2022  Volume 11, Issue 23

    Abstract: Formation and maintenance of tissue barriers require the coordination of cell mechanics and cell-cell junction assembly. Here, we combined methods to modulate ECM stiffness and to measure mechanical forces on adhesion complexes to investigate how tight ... ...

    Abstract Formation and maintenance of tissue barriers require the coordination of cell mechanics and cell-cell junction assembly. Here, we combined methods to modulate ECM stiffness and to measure mechanical forces on adhesion complexes to investigate how tight junctions regulate cell mechanics and epithelial morphogenesis. We found that depletion of the tight junction adaptor ZO-1 disrupted junction assembly and morphogenesis in an ECM stiffness-dependent manner and led to a stiffness-dependant reorganisation of active myosin. Both junction formation and morphogenesis were rescued by inhibition of actomyosin contractility. ZO-1 depletion also impacted mechanical tension at cell-matrix and E-cadherin-based cell-cell adhesions. The effect on E-cadherin also depended on ECM stiffness and correlated with effects of ECM stiffness on actin cytoskeleton organisation. However, ZO-1 knockout also revealed tension-independent functions of ZO-1. ZO-1-deficient cells could assemble functional barriers at low tension, but their tight junctions remained corrupted with strongly reduced and discontinuous recruitment of junctional components. Our results thus reveal that reciprocal regulation between ZO-1 and cell mechanics controls tight junction assembly and epithelial morphogenesis, and that, in a second, tension-independent step, ZO-1 is required to assemble morphologically and structurally fully assembled and functionally normal tight junctions.
    Language English
    Publishing date 2022-11-25
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2661518-6
    ISSN 2073-4409 ; 2073-4409
    ISSN (online) 2073-4409
    ISSN 2073-4409
    DOI 10.3390/cells11233775
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Tight junctions in health and disease.

    Balda, Maria Susana / Matter, Karl

    Seminars in cell & developmental biology

    2014  Volume 36, Page(s) 147–148

    MeSH term(s) Cell Adhesion/physiology ; Endothelial Cells/physiology ; Epithelial Cells/physiology ; Humans ; Tight Junctions/physiology
    Language English
    Publishing date 2014-11-22
    Publishing country England
    Document type Editorial ; Introductory Journal Article
    ZDB-ID 1312473-0
    ISSN 1096-3634 ; 1084-9521
    ISSN (online) 1096-3634
    ISSN 1084-9521
    DOI 10.1016/j.semcdb.2014.11.001
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: SnapShot: Epithelial tight junctions.

    Matter, Karl / Balda, Maria S

    Cell

    2014  Volume 157, Issue 4, Page(s) 992–992.e1

    Abstract: Tight junctions form a morphological and functional border between the apical and basolateral cell surface domains that serves as a paracellular diffusion barrier, enabling epithelial cells to separate compartments of different composition. Tight ... ...

    Abstract Tight junctions form a morphological and functional border between the apical and basolateral cell surface domains that serves as a paracellular diffusion barrier, enabling epithelial cells to separate compartments of different composition. Tight junctions also contribute to the generation and maintenance of cell polarity and regulate signaling mechanisms that guide cell behavior, shape, and gene expression. This SnapShot illustrates their components, organization, and functions.
    MeSH term(s) Animals ; Cell Polarity ; Epithelial Cells/cytology ; Gene Expression Regulation ; Permeability ; Signal Transduction ; Tight Junctions/metabolism
    Language English
    Publishing date 2014-05-08
    Publishing country United States
    Document type Journal Article
    ZDB-ID 187009-9
    ISSN 1097-4172 ; 0092-8674
    ISSN (online) 1097-4172
    ISSN 0092-8674
    DOI 10.1016/j.cell.2014.04.027
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: ARHGEF18/p114RhoGEF Coordinates PKA/CREB Signaling and Actomyosin Remodeling to Promote Trophoblast Cell-Cell Fusion During Placenta Morphogenesis

    Robert Beal / Ana Alonso-Carriazo Fernandez / Dimitris K. Grammatopoulos / Karl Matter / Maria S. Balda

    Frontiers in Cell and Developmental Biology, Vol

    2021  Volume 9

    Abstract: Coordination of cell-cell adhesion, actomyosin dynamics and gene expression is crucial for morphogenetic processes underlying tissue and organ development. Rho GTPases are main regulators of the cytoskeleton and adhesion. They are activated by guanine ... ...

    Abstract Coordination of cell-cell adhesion, actomyosin dynamics and gene expression is crucial for morphogenetic processes underlying tissue and organ development. Rho GTPases are main regulators of the cytoskeleton and adhesion. They are activated by guanine nucleotide exchange factors in a spatially and temporally controlled manner. However, the roles of these Rho GTPase activators during complex developmental processes are still poorly understood. ARHGEF18/p114RhoGEF is a tight junction-associated RhoA activator that forms complexes with myosin II, and regulates actomyosin contractility. Here we show that p114RhoGEF/ARHGEF18 is required for mouse syncytiotrophoblast differentiation and placenta development. In vitro and in vivo experiments identify that p114RhoGEF controls expression of AKAP12, a protein regulating protein kinase A (PKA) signaling, and is required for PKA-induced actomyosin remodeling, cAMP-responsive element binding protein (CREB)-driven gene expression of proteins required for trophoblast differentiation, and, hence, trophoblast cell-cell fusion. Our data thus indicate that p114RhoGEF links actomyosin dynamics and cell-cell junctions to PKA/CREB signaling, gene expression and cell-cell fusion.
    Keywords ARHGEF18 ; AKAP12 ; trophoblasts ; cell-cell adhesion ; RhoA ; CREB ; Biology (General) ; QH301-705.5
    Subject code 571
    Language English
    Publishing date 2021-03-01T00:00:00Z
    Publisher Frontiers Media S.A.
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  10. Book: Karl Gerok zum hundertjährigen Geburtstag, 30. Januar 1915

    Gerok, Karl / Matter, Paul

    1915  

    Author's details Von P[aul] Matter
    Size 16 S
    Publisher Greiner & Pfeiffer
    Publishing place Stuttgart
    Document type Book
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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