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Rezi CK, Aslanyan MG, Diwan GD, Cheng T, Chamlali M, Junger K, Anvarian Z, Lorentzen E, Pauly KB, Afshar-Bahadori Y, Fernandes EF, Qian F, Tosi S, Christensen ST, Pedersen SF, Strømgaard K, Russell RB, Miner JH, Mahjoub MR, Boldt K, Roepman R, Pedersen LB. DLG1 functions upstream of SDCCAG3 and IFT20 to control ciliary targeting of polycystin-2. EMBO Rep 2024; 25:3040-3063. [PMID: 38849673 PMCID: PMC11239879 DOI: 10.1038/s44319-024-00170-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 05/08/2024] [Accepted: 05/29/2024] [Indexed: 06/09/2024] Open
Abstract
Polarized vesicular trafficking directs specific receptors and ion channels to cilia, but the underlying mechanisms are poorly understood. Here we describe a role for DLG1, a core component of the Scribble polarity complex, in regulating ciliary protein trafficking in kidney epithelial cells. Conditional knockout of Dlg1 in mouse kidney causes ciliary elongation and cystogenesis, and cell-based proximity labeling proteomics and fluorescence microscopy show alterations in the ciliary proteome upon loss of DLG1. Specifically, the retromer-associated protein SDCCAG3, IFT20, and polycystin-2 (PC2) are reduced in the cilia of DLG1-deficient cells compared to control cells. This phenotype is recapitulated in vivo and rescuable by re-expression of wild-type DLG1, but not a Congenital Anomalies of the Kidney and Urinary Tract (CAKUT)-associated DLG1 variant, p.T489R. Finally, biochemical approaches and Alpha Fold modelling suggest that SDCCAG3 and IFT20 form a complex that associates, at least indirectly, with DLG1. Our work identifies a key role for DLG1 in regulating ciliary protein composition and suggests that ciliary dysfunction of the p.T489R DLG1 variant may contribute to CAKUT.
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Affiliation(s)
- Csenge K Rezi
- Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Mariam G Aslanyan
- Department of Human Genetics, Research Institute for Medical Innovation, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Gaurav D Diwan
- BioQuant, Heidelberg University, Heidelberg, Germany
- Biochemistry Center (BZH), Heidelberg University, Heidelberg, Germany
| | - Tao Cheng
- Department of Medicine (Nephrology Division) and Department of Cell Biology and Physiology, Washington University, St Louis, MO, USA
| | - Mohamed Chamlali
- Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Katrin Junger
- Institute for Ophthalmic Research, Eberhard Karl University of Tübingen, Tübingen, Germany
| | - Zeinab Anvarian
- Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Esben Lorentzen
- Department of Molecular Biology and Genetics - Protein Science, Aarhus University, Aarhus, Denmark
| | - Kleo B Pauly
- Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | | | - Eduardo Fa Fernandes
- Center for Biopharmaceuticals, Department of Drug Design and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Feng Qian
- Division of Nephrology, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Sébastien Tosi
- Danish BioImaging Infrastructure Image Analysis Core Facility (DBI-INFRA IACF), University of Copenhagen, Copenhagen, Denmark
| | | | - Stine F Pedersen
- Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Kristian Strømgaard
- Center for Biopharmaceuticals, Department of Drug Design and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Robert B Russell
- BioQuant, Heidelberg University, Heidelberg, Germany
- Biochemistry Center (BZH), Heidelberg University, Heidelberg, Germany
| | - Jeffrey H Miner
- Department of Medicine (Nephrology Division) and Department of Cell Biology and Physiology, Washington University, St Louis, MO, USA
| | - Moe R Mahjoub
- Department of Medicine (Nephrology Division) and Department of Cell Biology and Physiology, Washington University, St Louis, MO, USA
| | - Karsten Boldt
- Institute for Ophthalmic Research, Eberhard Karl University of Tübingen, Tübingen, Germany
| | - Ronald Roepman
- Department of Human Genetics, Research Institute for Medical Innovation, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Lotte B Pedersen
- Department of Biology, University of Copenhagen, Copenhagen, Denmark.
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2
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Groh AC, Möller-Kerutt A, Gilhaus K, Höffken V, Nedvetsky P, Kleimann S, Behrens M, Ghosh S, Hansen U, Krahn MP, Ebnet K, Pavenstädt H, Ludwig A, Weide T. PALS1 is a key regulator of the lateral distribution of tight junction proteins in renal epithelial cells. J Cell Sci 2024; 137:jcs261303. [PMID: 38265145 DOI: 10.1242/jcs.261303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 12/04/2023] [Indexed: 01/25/2024] Open
Abstract
The evolutionarily conserved apical Crumbs (CRB) complex, consisting of the core components CRB3a (an isoform of CRB3), PALS1 and PATJ, plays a key role in epithelial cell-cell contact formation and cell polarization. Recently, we observed that deletion of one Pals1 allele in mice results in functional haploinsufficiency characterized by renal cysts. Here, to address the role of PALS1 at the cellular level, we generated CRISPR/Cas9-mediated PALS1-knockout MDCKII cell lines. The loss of PALS1 resulted in increased paracellular permeability, indicating an epithelial barrier defect. This defect was associated with a redistribution of several tight junction-associated proteins from bicellular to tricellular contacts. PALS1-dependent localization of tight junction proteins at bicellular junctions required its interaction with PATJ. Importantly, reestablishment of the tight junction belt upon transient F-actin depolymerization or upon Ca2+ removal was strongly delayed in PALS1-deficient cells. Additionally, the cytoskeleton regulator RhoA was redistributed from junctions into the cytosol under PALS1 knockout. Together, our data uncover a critical role of PALS1 in the coupling of tight junction proteins to the F-actin cytoskeleton, which ensures their correct distribution along bicellular junctions and the formation of tight epithelial barrier.
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Affiliation(s)
- Ann-Christin Groh
- University Hospital of Münster (UKM), Internal Medicine D (MedD), Department Molecular Nephrology, Albert-Schweitzer-Campus 1 Building A14, 48149 Münster, Germany
| | - Annika Möller-Kerutt
- University Hospital of Münster (UKM), Internal Medicine D (MedD), Department Molecular Nephrology, Albert-Schweitzer-Campus 1 Building A14, 48149 Münster, Germany
| | - Kevin Gilhaus
- University Hospital of Münster (UKM), Internal Medicine D (MedD), Department Molecular Nephrology, Albert-Schweitzer-Campus 1 Building A14, 48149 Münster, Germany
| | - Verena Höffken
- University Hospital of Münster (UKM), Internal Medicine D (MedD), Department Molecular Nephrology, Albert-Schweitzer-Campus 1 Building A14, 48149 Münster, Germany
| | - Pavel Nedvetsky
- University Hospital of Münster (UKM), Internal Medicine D (MedD), Medical Cell Biology, Albert-Schweitzer-Campus 1 Building A14, 48149 Münster, Germany
| | - Simon Kleimann
- University Hospital of Münster (UKM), Internal Medicine D (MedD), Department Molecular Nephrology, Albert-Schweitzer-Campus 1 Building A14, 48149 Münster, Germany
| | - Malina Behrens
- University Hospital of Münster (UKM), Internal Medicine D (MedD), Department Molecular Nephrology, Albert-Schweitzer-Campus 1 Building A14, 48149 Münster, Germany
| | - Sujasha Ghosh
- School of Biological Sciences and NTU Institute of Structural Biology (NISB), Nanyang Technological University, 60 Nanyang Drive, 637551 Singapore City, Singapore
| | - Uwe Hansen
- University Hospital of Münster, Institute of Musculoskeletal Medicine (IMM), Head Core Facility Electron Microscopy, Domagkstraße 3, 48149 Münster, Germany
| | - Michael P Krahn
- University Hospital of Münster (UKM), Internal Medicine D (MedD), Medical Cell Biology, Albert-Schweitzer-Campus 1 Building A14, 48149 Münster, Germany
| | - Klaus Ebnet
- Institute-associated Research Group "Cell adhesion and cell polarity", Institute of Medical Biochemistry, Center for Molecular Biology of Inflammation (ZMBE), University of Münster, Von-Esmarch-Straße 56, 48149 Münster, Germany
| | - Hermann Pavenstädt
- University Hospital of Münster (UKM), Internal Medicine D (MedD), Department Molecular Nephrology, Albert-Schweitzer-Campus 1 Building A14, 48149 Münster, Germany
| | - Alexander Ludwig
- School of Biological Sciences and NTU Institute of Structural Biology (NISB), Nanyang Technological University, 60 Nanyang Drive, 637551 Singapore City, Singapore
| | - Thomas Weide
- University Hospital of Münster (UKM), Internal Medicine D (MedD), Department Molecular Nephrology, Albert-Schweitzer-Campus 1 Building A14, 48149 Münster, Germany
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3
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Helmer P, Vallee RB. A two-kinesin mechanism controls neurogenesis in the developing brain. Commun Biol 2023; 6:1219. [PMID: 38040957 PMCID: PMC10692124 DOI: 10.1038/s42003-023-05604-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 11/17/2023] [Indexed: 12/03/2023] Open
Abstract
During the course of brain development, Radial Glial Progenitor (RGP) cells give rise to most of the neurons required for a functional cortex. RGPs can undergo symmetric divisions, which result in RGP duplication, or asymmetric divisions, which result in one RGP as well as one to four neurons. The control of this balance is not fully understood, but must be closely regulated to produce the cells required for a functioning cortex, and to maintain the stem cell pool. In this study, we show that the balance between symmetric and asymmetric RGP divisions is in part regulated by the actions of two kinesins, Kif1A and Kif13B, which we find have opposing roles in neurogenesis through their action on the mitotic spindle in dividing RGPs. We find that Kif1A promotes neurogenesis, whereas Kif13B promotes symmetric, non-neurogenic divisions. Interestingly, the two kinesins are closely related in structure, and members of the same kinesin-3 subfamily, thus their opposing effects on spindle orientation appear to represent a novel mechanism for the regulation of neurogenesis.
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Affiliation(s)
- Paige Helmer
- Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY, 10032, USA.
- Department of Biological Sciences, Columbia University, New York, NY, 10032, USA.
| | - Richard B Vallee
- Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY, 10032, USA.
- Department of Biological Sciences, Columbia University, New York, NY, 10032, USA.
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Fiedler J, Moennig T, Hinrichs JH, Weber A, Wagner T, Hemmer T, Schröter R, Weide T, Epting D, Bergmann C, Nedvetsky P, Krahn MP. PATJ inhibits histone deacetylase 7 to control tight junction formation and cell polarity. Cell Mol Life Sci 2023; 80:333. [PMID: 37878054 PMCID: PMC10600057 DOI: 10.1007/s00018-023-04994-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 09/19/2023] [Accepted: 09/29/2023] [Indexed: 10/26/2023]
Abstract
The conserved multiple PDZ-domain containing protein PATJ stabilizes the Crumbs-Pals1 complex to regulate apical-basal polarity and tight junction formation in epithelial cells. However, the molecular mechanism of PATJ's function in these processes is still unclear. In this study, we demonstrate that knockout of PATJ in epithelial cells results in tight junction defects as well as in a disturbed apical-basal polarity and impaired lumen formation in three-dimensional cyst assays. Mechanistically, we found PATJ to associate with and inhibit histone deacetylase 7 (HDAC7). Inhibition or downregulation of HDAC7 restores polarity and lumen formation. Gene expression analysis of PATJ-deficient cells revealed an impaired expression of genes involved in cell junction assembly and membrane organization, which is rescued by the downregulation of HDAC7. Notably, the function of PATJ regulating HDAC7-dependent cilia formation does not depend on its canonical interaction partner, Pals1, indicating a new role of PATJ, which is distinct from its function in the Crumbs complex. By contrast, polarity and lumen phenotypes observed in Pals1- and PATJ-deficient epithelial cells can be rescued by inhibition of HDAC7, suggesting that the main function of this polarity complex in this process is to modulate the transcriptional profile of epithelial cells by inhibiting HDAC7.
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Affiliation(s)
- Julia Fiedler
- Department of Medical Cell Biology, Medical Clinic D, University Hospital of Münster, Albert-Schweitzer-Campus 1-A14, 48149, Münster, Germany
| | - Thomas Moennig
- Department of Medical Cell Biology, Medical Clinic D, University Hospital of Münster, Albert-Schweitzer-Campus 1-A14, 48149, Münster, Germany
| | - Johanna H Hinrichs
- Department of Medical Cell Biology, Medical Clinic D, University Hospital of Münster, Albert-Schweitzer-Campus 1-A14, 48149, Münster, Germany
| | - Annika Weber
- Department of Medical Cell Biology, Medical Clinic D, University Hospital of Münster, Albert-Schweitzer-Campus 1-A14, 48149, Münster, Germany
| | - Thomas Wagner
- Department of Medical Cell Biology, Medical Clinic D, University Hospital of Münster, Albert-Schweitzer-Campus 1-A14, 48149, Münster, Germany
| | - Tim Hemmer
- Department of Medical Cell Biology, Medical Clinic D, University Hospital of Münster, Albert-Schweitzer-Campus 1-A14, 48149, Münster, Germany
| | - Rita Schröter
- Department of Medical Cell Biology, Medical Clinic D, University Hospital of Münster, Albert-Schweitzer-Campus 1-A14, 48149, Münster, Germany
| | - Thomas Weide
- Department of Medical Cell Biology, Medical Clinic D, University Hospital of Münster, Albert-Schweitzer-Campus 1-A14, 48149, Münster, Germany
| | - Daniel Epting
- Department of Medicine IV, Faculty of Medicine, Medical Center, University of Freiburg, 79106, Freiburg, Germany
| | - Carsten Bergmann
- Department of Medicine IV, Faculty of Medicine, Medical Center, University of Freiburg, 79106, Freiburg, Germany
- Medizinische Genetik Mainz, Limbach Genetics, 55128, Mainz, Germany
| | - Pavel Nedvetsky
- Department of Medical Cell Biology, Medical Clinic D, University Hospital of Münster, Albert-Schweitzer-Campus 1-A14, 48149, Münster, Germany
| | - Michael P Krahn
- Department of Medical Cell Biology, Medical Clinic D, University Hospital of Münster, Albert-Schweitzer-Campus 1-A14, 48149, Münster, Germany.
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