Genetic Analysis of the Catalytic Activity of Integrin-Linked Kinase (ILK) in Vivo

Total Page:16

File Type:pdf, Size:1020Kb

Genetic Analysis of the Catalytic Activity of Integrin-Linked Kinase (ILK) in Vivo Dissertation zur Erlangung des Doktorgrades der Fakultät für Chemie und Pharmazie der Ludwig-Maximilians-Universität München Genetic analysis of the catalytic activity of Integrin-linked kinase (ILK) in vivo Anika Lange aus Osterburg/Altmark 2010 Erklärung Diese Dissertation wurde im Sinne von § 13 Abs. 3 der Promotionsordnung vom 29. Januar 1998 von Herrn Prof. Dr. Reinhard Fässler betreut. Ehrenwörtliche Versicherung Diese Dissertation wurde selbstständig, ohne unerlaubte Hilfe erarbeitet. München, am ---------------------------- Anika Lange Dissertation eingereicht am: 22.01.2010 1. Gutachter Prof. Dr. Reinhard Fässler 2. Gutachter Prof. Dr. Christian Wahl-Schott Mündliche Prüfung am: 04.03.2010 Für meine lieben Eltern Table of Contents Table of Contents Table of Contents ............................................................................................................... I List of Publications ......................................................................................................... III Abbreviations .................................................................................................................. IV Summary.......................................................................................................................... VI Introduction....................................................................................................................... 1 1. The integrin receptor family.................................................................................... 1 1.1 Structure of integrins.......................................................................................... 1 1.2 Integrins and their ligands ................................................................................. 4 1.3 Bidirectional regulation of integrin signaling................................................... 8 1.3.1 Inside-out signaling...................................................................................... 8 1.3.2 Outside-in signalling .................................................................................. 12 1.4 Assembly of integrin-dependent adhesion structures.................................... 16 1.4.1 The integrin-actin connection ................................................................... 18 1.5 The ILK/PINCH/parvin (IPP) complex.......................................................... 20 1.5.1 The molecular composition of the IPP complex...................................... 21 1.5.2 The biological functions of the IPP complex ........................................... 22 1.5.3 The putative kinase activity of ILK.......................................................... 24 2. Kidney physiology................................................................................................... 26 2.1 Kidney development in mice............................................................................ 30 2.1.1 Kidney morphogenesis – pronephros, mesonephros and metanephros 30 2.1.2 Mesenchymal signals initiate kidney development ................................. 33 2.1.3 Ureteric bud outgrowth and branching................................................... 36 2.1.4 Tubulogenesis – MET................................................................................ 42 2.1.5 Role of stroma in kidney development..................................................... 44 2.2 Renal abnormalities in humans ....................................................................... 46 2.2.1 The glomerulus and proteinuria............................................................... 49 2.2.2 Cystic kidney diseases................................................................................ 54 2.3 Integrins and kidney......................................................................................... 56 2.3.1 ECM and its receptors in mammalian nephrogenesis............................ 56 I Table of Contents 2.3.2 Role of integrins and their binding partners in the development of the collecting system.................................................................................................. 59 2.3.3 Role of integrins and their binding partners in the development and function of the glomerulus.................................................................................. 60 Aim of the Thesis............................................................................................................. 63 Short Summaries of Publications .................................................................................. 64 Publication I: Local call: from integrins to actin assembly .................................... 64 Publication II: How ILK and kindlins cooperate to orchestrate integrin signaling ....................................................................................................................................... 65 Publication III: Integrin-linked kinase is an adaptor with essential functions during mouse development ........................................................................................ 66 Publication IV: The ILK/PINCH/parvin complex: the kinase is dead, long live the pseudokinase! .............................................................................................................. 67 Publication V: Integrin-mediated signals control microtubule dynamics required for plasma membrane targeting of caveolae ............................................................ 68 Publication VI: Bacteria hijack integrin-linked kinase to stabilize focal adhesions and block cell detachment.......................................................................................... 68 References........................................................................................................................ 69 Acknowledgements ......................................................................................................... 83 Curriculum Vitae............................................................................................................ 84 Supplements..................................................................................................................... 85 II List of Publications List of Publications This thesis is based on the following publications, which are referred to in the text by their Roman numerals (I-VI): I. Wiesner S, Lange A and Fässler R. Local call: from integrins to actin assembly. Trends in Cell Biology 2006, 16 II. Böttcher RT, Lange A and Fässler R. How ILK and kindlins cooperate to orchestrate integrin signaling. Current Opinion in Cell Biology 2009, 21(5): 670-5 III. Lange A, Wickström SA, Jakobson M, Zent R, Sainio K and Fässler R. Integrin- linked kinase is an adaptor with essential functions during mouse development. Nature 2009, 461: 1002-1006 . IV. Wickström SA, Lange A, Montanez E and Reinhard Fässler. The ILK/PINCH/parvin complex: the kinase is dead, long live the pseudokinase! EMBO J 2010, 29(2): 281-91. The following publications were not the focus of my project but I contributed to them: V. Wickström SA, Lange A, Hess MW, Krüger M, Pfaller K, Mann M, Bloch W, Huber LA and Fässler R. Integrin-mediated signals control microtubule dynamics required for plasma membrane targeting of caveolae. Submitted manuscript VI. Kim M, Ogawa M, Fujita Y, Yoshkawa Y, Nagai T, Koyama T, Nagai S, Lange A, Fässler R and Sasakawa C. Bacteria hijack integrin-linked kinase to stabilize focal adhesions and block cell detachment. Nature 2009, 459: 578- 583. III Abbreviations Abbreviations ADAM a disintegrin and metalloproteinase ADP adenosine diphosphate Akt RAC-alpha serine/threonine protein kinase APC adenomatous polyposis coli Arp2/3 actin-related protein 2/3 complex ATP adenosine triphosphate BMP bone morphogenetic protein Cdc42 cell division cycle 42 CH calponin homology Cre cyclization recombinase DAG diacylglycerol E embryonic day ECM extracellular matrix EGF epidermal growth factor ERK extracellular signal-regulated kinase FA focal adhesion F-actin filamentous actin FAK focal adhesion kinase FERM 4.1, ezrin, radixin, moesin FGF fibroblast growth factor FGFR fibroblast growth factor receptor FP foot process GAP GTPase activating protein GBM glomerular basement membrane GDI GDP dissociation inhibitor GDNF glial-cell-derived neurotrophic factor GDP guanosine diphosphate GEF guanine nucleotide exchange factor GFR growth factor receptor GPCR G protein coupled receptor Gsk-3β glycogen synthase kinase-3β HGF hepatocyte growth factor ICAM intercellular adhesion molecule ILK integrin-linked kinase IP3 inositol triphosphate IPP ILK/PINCH/parvin JNK c-jun N-terminal kinase MAPK mitogen-activated protein kinase MET mesenchymal-to-epithelial transition MIDAS metal-ion-dependent adhesion site MLC myosin light chain MM metanephric mesenchyme MMP matrix metalloproteinase Nck2 noncatalytic region of tyrosine kinase, adaptor protein 2 NS nephrotic syndrome IV Abbreviations PCP planar cell polarity PH pleckstrin homology PI3K phosphatidylinositol 3-kinase PINCH particularly interesting new Cys-His rich protein PKC protein kinase C PKD polycystic kidney disease PLC phospholipase C PTB phosphotyrosine binding Ret rearranged during transformation RGD arginine, glycine, aspartate RhoA Ras homology gene family, member A ROCK Rho-associated protein kinase SD slit diaphragm SH2 src homology 2 Src Rous sarcoma oncogene TGFβ transforming growth factor β UB ureteric bud VCAM vascular cell-adhesion molecule WD wolffian duct Wnt wingless-type MMTV integration site family member WT1 wilms tumour
Recommended publications
  • Altered Integrin Alpha 6 Expression As a Rescue for Muscle Fiber Detachment in Zebrafish (Danio Rerio)
    The University of Maine DigitalCommons@UMaine Honors College Spring 2014 Altered Integrin Alpha 6 Expression As A Rescue For Muscle Fiber Detachment In Zebrafish (Danio Rerio) Rose E. McGlauflin Follow this and additional works at: https://digitalcommons.library.umaine.edu/honors Part of the Animal Diseases Commons, and the Musculoskeletal Diseases Commons Recommended Citation McGlauflin, Rose E., Alter" ed Integrin Alpha 6 Expression As A Rescue For Muscle Fiber Detachment In Zebrafish (Danio Rerio)" (2014). Honors College. 140. https://digitalcommons.library.umaine.edu/honors/140 This Honors Thesis is brought to you for free and open access by DigitalCommons@UMaine. It has been accepted for inclusion in Honors College by an authorized administrator of DigitalCommons@UMaine. For more information, please contact [email protected]. ALTERED INTEGRIN ALPHA 6 EXPRESSION AS A RESCUE FOR MUSCLE FIBER DETACHMENT IN ZEBRAFISH (DANIO RERIO) by Rose E. McGlauflin A Thesis Submitted in Partial Fulfillment of the Requirements for a Degree with Honors (Biology) The Honors College University of Maine May 2014 Advisory Committee: Clarissa A. Henry, Ph.D., Associate Professor of Biological Sciences, Advisor Mary S. Tyler, Ph.D., Professor of Zoology Mary Astumian, Henry Lab Manager Michelle Smith, Ph.D., Assistant Professor of Biological Sciences Mark Haggerty, Ph.D., Honors Preceptor for Civic Engagement Abstract Cells adhere to their extracellular matrix by way of integrins, transmembrane molecules that attach the cytoskeleton to the extracellular basement membrane (one kind of extracellular matrix). In some muscular dystrophies, specific integrins are disrupted and muscle fibers detach from the myotendenous junction and degenerate. This integrin disruption causes a constant cycle of regeneration and degeneration, which greatly harms the tissue over time.
    [Show full text]
  • Global Analysis Reveals the Complexity of the Human Glomerular Extracellular Matrix
    Global analysis reveals the complexity of the human glomerular extracellular matrix Rachel Lennon,1,2 Adam Byron,1,* Jonathan D. Humphries,1 Michael J. Randles,1,2 Alex Carisey,1 Stephanie Murphy,1,2 David Knight,3 Paul E. Brenchley,2 Roy Zent,4,5 and Martin J. Humphries.1 1Wellcome Trust Centre for Cell-Matrix Research, Faculty of Life Sciences, University of Manchester, Manchester, UK; 2Faculty of Medical and Human Sciences, University of Manchester, Manchester, UK; 3Biological Mass Spectrometry Core Facility, Faculty of Life Sciences, University of Manchester, Manchester, UK; 4Division of Nephrology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA; and 5Veterans Affairs Hospital, Nashville, TN, USA. *Present address: Edinburgh Cancer Research UK Centre, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK. Running title: Proteome of the glomerular matrix Word count: Abstract: 208, main text 2765 Corresponding author: Dr Rachel Lennon, Wellcome Trust Centre for Cell-Matrix Research, Michael Smith Building, University of Manchester, Manchester M13 9PT, UK. Phone: 0044 (0) 161 2755498. Fax: 0044 (0) 161 2755082. Email: [email protected] Abstract The glomerulus contains unique cellular and extracellular matrix (ECM) components, which are required for intact barrier function. Studies of the cellular components have helped to build understanding of glomerular disease; however, the full composition and regulation of glomerular ECM remains poorly understood. Here, we employed mass spectrometry–based proteomics of enriched ECM extracts for a global analysis of human glomerular ECM in vivo and identified a tissue-specific proteome of 144 structural and regulatory ECM proteins. This catalogue includes all previously identified glomerular components, plus many new and abundant components.
    [Show full text]
  • Propranolol-Mediated Attenuation of MMP-9 Excretion in Infants with Hemangiomas
    Supplementary Online Content Thaivalappil S, Bauman N, Saieg A, Movius E, Brown KJ, Preciado D. Propranolol-mediated attenuation of MMP-9 excretion in infants with hemangiomas. JAMA Otolaryngol Head Neck Surg. doi:10.1001/jamaoto.2013.4773 eTable. List of All of the Proteins Identified by Proteomics This supplementary material has been provided by the authors to give readers additional information about their work. © 2013 American Medical Association. All rights reserved. Downloaded From: https://jamanetwork.com/ on 10/01/2021 eTable. List of All of the Proteins Identified by Proteomics Protein Name Prop 12 mo/4 Pred 12 mo/4 Δ Prop to Pred mo mo Myeloperoxidase OS=Homo sapiens GN=MPO 26.00 143.00 ‐117.00 Lactotransferrin OS=Homo sapiens GN=LTF 114.00 205.50 ‐91.50 Matrix metalloproteinase‐9 OS=Homo sapiens GN=MMP9 5.00 36.00 ‐31.00 Neutrophil elastase OS=Homo sapiens GN=ELANE 24.00 48.00 ‐24.00 Bleomycin hydrolase OS=Homo sapiens GN=BLMH 3.00 25.00 ‐22.00 CAP7_HUMAN Azurocidin OS=Homo sapiens GN=AZU1 PE=1 SV=3 4.00 26.00 ‐22.00 S10A8_HUMAN Protein S100‐A8 OS=Homo sapiens GN=S100A8 PE=1 14.67 30.50 ‐15.83 SV=1 IL1F9_HUMAN Interleukin‐1 family member 9 OS=Homo sapiens 1.00 15.00 ‐14.00 GN=IL1F9 PE=1 SV=1 MUC5B_HUMAN Mucin‐5B OS=Homo sapiens GN=MUC5B PE=1 SV=3 2.00 14.00 ‐12.00 MUC4_HUMAN Mucin‐4 OS=Homo sapiens GN=MUC4 PE=1 SV=3 1.00 12.00 ‐11.00 HRG_HUMAN Histidine‐rich glycoprotein OS=Homo sapiens GN=HRG 1.00 12.00 ‐11.00 PE=1 SV=1 TKT_HUMAN Transketolase OS=Homo sapiens GN=TKT PE=1 SV=3 17.00 28.00 ‐11.00 CATG_HUMAN Cathepsin G OS=Homo
    [Show full text]
  • Environmental Influences on Endothelial Gene Expression
    ENDOTHELIAL CELL GENE EXPRESSION John Matthew Jeff Herbert Supervisors: Prof. Roy Bicknell and Dr. Victoria Heath PhD thesis University of Birmingham August 2012 University of Birmingham Research Archive e-theses repository This unpublished thesis/dissertation is copyright of the author and/or third parties. The intellectual property rights of the author or third parties in respect of this work are as defined by The Copyright Designs and Patents Act 1988 or as modified by any successor legislation. Any use made of information contained in this thesis/dissertation must be in accordance with that legislation and must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the permission of the copyright holder. ABSTRACT Tumour angiogenesis is a vital process in the pathology of tumour development and metastasis. Targeting markers of tumour endothelium provide a means of targeted destruction of a tumours oxygen and nutrient supply via destruction of tumour vasculature, which in turn ultimately leads to beneficial consequences to patients. Although current anti -angiogenic and vascular targeting strategies help patients, more potently in combination with chemo therapy, there is still a need for more tumour endothelial marker discoveries as current treatments have cardiovascular and other side effects. For the first time, the analyses of in-vivo biotinylation of an embryonic system is performed to obtain putative vascular targets. Also for the first time, deep sequencing is applied to freshly isolated tumour and normal endothelial cells from lung, colon and bladder tissues for the identification of pan-vascular-targets. Integration of the proteomic, deep sequencing, public cDNA libraries and microarrays, delivers 5,892 putative vascular targets to the science community.
    [Show full text]
  • 2335 Roles of Molecules Involved in Epithelial/Mesenchymal Transition
    [Frontiers in Bioscience 13, 2335-2355, January 1, 2008] Roles of molecules involved in epithelial/mesenchymal transition during angiogenesis Giulio Ghersi Dipartimento di Biologia Cellulare e dello Sviluppo, Universita di Palermo, Italy TABLE OF CONTENTS 1. Abstract 2. Introduction 3. Extracellular matrix 3.1. ECM and integrins 3.2. Basal lamina components 4. Cadherins. 4.1. Cadherins in angiogenesis 5. Integrins. 5.1. Integrins in angiogenesis 6. Focal adhesion molecules 7. Proteolytic enzymes 7.1. Proteolytic enzymes inhibitors 7.2. Proteolytic enzymes in angiogenesis 8. Perspective 9. Acknowledgements 10. References 1.ABSTRACT 2. INTRODUCTION Formation of vessels requires “epithelial- Growth of new blood vessels (angiogenesis) mesenchymal” transition of endothelial cells, with several plays a key role in several physiological processes, such modifications at the level of endothelial cell plasma as vascular remodeling during embryogenesis and membranes. These processes are associated with wound healing tissue repair in the adult; as well as redistribution of cell-cell and cell-substrate adhesion pathological processes, including rheumatoid arthritis, molecules, cross talk between external ECM and internal diabetic retinopathy, psoriasis, hemangiomas, and cytoskeleton through focal adhesion molecules and the cancer (1). Vessel formation entails the “epithelial- expression of several proteolytic enzymes, including matrix mesenchymal” transition of endothelial cells (ECs) “in metalloproteases and serine proteases. These enzymes with vivo”; a similar phenotypic exchange can be induced “in their degradative action on ECM components, generate vitro” by growing ECs to low cell density, or in “wound molecules acting as activators and/or inhibitors of healing” experiments or perturbing cell adhesion and angiogenesis. The purpose of this review is to provide an associated molecule functions.
    [Show full text]
  • Original Article FREM2 Is an Independent Predictor of Poor Survival in Clear Cell Renal Cell Carcinoma-Evidence from the Cancer Genome Atlas (TCGA)
    Int J Clin Exp Med 2019;12(12):13741-13748 www.ijcem.com /ISSN:1940-5901/IJCEM0076963 Original Article FREM2 is an independent predictor of poor survival in clear cell renal cell carcinoma-evidence from the cancer genome atlas (TCGA) Weiping Huang, Yongyong Lu, Xixi Huang, Feng Wang, Zhixian Yu Department of Urology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325035, Zhejiang Province, China Received February 26, 2018; Accepted October 7, 2018; Epub December 15, 2019; Published December 30, 2019 Abstract: Fraser syndrome protein 1 (FRAS1) and FRAS1 related extracellular matrix protein 1 and 2 (FREM1, FREM2) are a novel group of basement membrane proteins. The relationship between the three gene (FRAS1, FREM1, FREM2) and renal clear cell carcinoma is completely unclear. Thus, in this research, we used the mRNA sequencing data derived from TCGA kidney renal clear cell carcinoma cohort to assess the association of FRAS1, FREM1 and FREM2 with different clinical features. FRAS1, FREM1 and FREM2 mRNA levels were downregulated in KIRC (kidney renal clear cell carcinoma) tissues than normal tissues (FRAS1, P < 0.0001; FREM1, P < 0.0001, FREM2, P = 0.0001), respectively. FRAS1, FREM1 and FREM2 were significantly different in histologic grade, patho- logic stage and pathologic T (all P < 0.001). Low FRAS1, FREM1 and FREM2 expression were correlated to worsen overall survival (all P < 0.01), and Low FREM1 and FREM2 expression had worse relapse-free survival (FREM1, P = 0.0113; FREM2, P = 0.0424). Multivariate Cox regression analysis revealed that FREM2 was an independent prog- nostic factor for overall survival. Taken together, FREM2 expression is an independent predictor of poor survival in renal clear cell carcinoma and is positively associated with advanced stage, high histologic grade.
    [Show full text]
  • Figure S1. Representative Report Generated by the Ion Torrent System Server for Each of the KCC71 Panel Analysis and Pcafusion Analysis
    Figure S1. Representative report generated by the Ion Torrent system server for each of the KCC71 panel analysis and PCaFusion analysis. (A) Details of the run summary report followed by the alignment summary report for the KCC71 panel analysis sequencing. (B) Details of the run summary report for the PCaFusion panel analysis. A Figure S1. Continued. Representative report generated by the Ion Torrent system server for each of the KCC71 panel analysis and PCaFusion analysis. (A) Details of the run summary report followed by the alignment summary report for the KCC71 panel analysis sequencing. (B) Details of the run summary report for the PCaFusion panel analysis. B Figure S2. Comparative analysis of the variant frequency found by the KCC71 panel and calculated from publicly available cBioPortal datasets. For each of the 71 genes in the KCC71 panel, the frequency of variants was calculated as the variant number found in the examined cases. Datasets marked with different colors and sample numbers of prostate cancer are presented in the upper right. *Significantly high in the present study. Figure S3. Seven subnetworks extracted from each of seven public prostate cancer gene networks in TCNG (Table SVI). Blue dots represent genes that include initial seed genes (parent nodes), and parent‑child and child‑grandchild genes in the network. Graphical representation of node‑to‑node associations and subnetwork structures that differed among and were unique to each of the seven subnetworks. TCNG, The Cancer Network Galaxy. Figure S4. REVIGO tree map showing the predicted biological processes of prostate cancer in the Japanese. Each rectangle represents a biological function in terms of a Gene Ontology (GO) term, with the size adjusted to represent the P‑value of the GO term in the underlying GO term database.
    [Show full text]
  • Supplementary Table 1: Adhesion Genes Data Set
    Supplementary Table 1: Adhesion genes data set PROBE Entrez Gene ID Celera Gene ID Gene_Symbol Gene_Name 160832 1 hCG201364.3 A1BG alpha-1-B glycoprotein 223658 1 hCG201364.3 A1BG alpha-1-B glycoprotein 212988 102 hCG40040.3 ADAM10 ADAM metallopeptidase domain 10 133411 4185 hCG28232.2 ADAM11 ADAM metallopeptidase domain 11 110695 8038 hCG40937.4 ADAM12 ADAM metallopeptidase domain 12 (meltrin alpha) 195222 8038 hCG40937.4 ADAM12 ADAM metallopeptidase domain 12 (meltrin alpha) 165344 8751 hCG20021.3 ADAM15 ADAM metallopeptidase domain 15 (metargidin) 189065 6868 null ADAM17 ADAM metallopeptidase domain 17 (tumor necrosis factor, alpha, converting enzyme) 108119 8728 hCG15398.4 ADAM19 ADAM metallopeptidase domain 19 (meltrin beta) 117763 8748 hCG20675.3 ADAM20 ADAM metallopeptidase domain 20 126448 8747 hCG1785634.2 ADAM21 ADAM metallopeptidase domain 21 208981 8747 hCG1785634.2|hCG2042897 ADAM21 ADAM metallopeptidase domain 21 180903 53616 hCG17212.4 ADAM22 ADAM metallopeptidase domain 22 177272 8745 hCG1811623.1 ADAM23 ADAM metallopeptidase domain 23 102384 10863 hCG1818505.1 ADAM28 ADAM metallopeptidase domain 28 119968 11086 hCG1786734.2 ADAM29 ADAM metallopeptidase domain 29 205542 11085 hCG1997196.1 ADAM30 ADAM metallopeptidase domain 30 148417 80332 hCG39255.4 ADAM33 ADAM metallopeptidase domain 33 140492 8756 hCG1789002.2 ADAM7 ADAM metallopeptidase domain 7 122603 101 hCG1816947.1 ADAM8 ADAM metallopeptidase domain 8 183965 8754 hCG1996391 ADAM9 ADAM metallopeptidase domain 9 (meltrin gamma) 129974 27299 hCG15447.3 ADAMDEC1 ADAM-like,
    [Show full text]
  • Kruppel-Like Factor 9 Inhibits Glioblastoma Stemness
    KRUPPEL-LIKE FACTOR 9 INHIBITS GLIOBLASTOMA STEMNESS THROUGH GLOBAL TRANSCRIPTION REPRESSION AND INHIBITION OF INTEGRIN ALPHA 6 AND CD151 By Jessica Tilghman A dissertation submitted to Johns Hopkins University in conformity with the requirements for the degree of Doctor of Philosophy Baltimore, Maryland October, 2015 Abstract Glioblastoma (GBM) stem cells (GSCs) represent tumor-propagating cells with stem-like characteristics (stemness) that contribute disproportionately to GBM drug resistance and tumor recurrence. Understanding the mechanisms supporting GSC stemness is important for developing novel strategies that target tumor propagation to inhibit cancer progression and improve patient survival. Krüppel-like factor 9 (KLF9) has emerged as a regulator of cell differentiation, neural development, and oncogenesis; however, the molecular basis for KLF9’s diverse contextual functions has been unclear. We establish for the first time a genome-wide map of KLF9-regulated targets in human glioblastoma stem-like cells, and show that KLF9 functions as a transcriptional repressor and thereby regulates multiple signaling pathways involved in oncogenesis and regulation of cancer stem-like phenotype. A detailed analysis of two novel KLF9 targets suggests that KLF9 inhibits glioma cell stemness by repressing expression of integrin α6 and CD151. The expression of one candidate KLF9 target gene ITGA6 coding for integrin α6 was verified to be downregulated by KLF9 in GSCs. ITGA6 transcription repression by KLF9 altered GBM neurosphere cell behavior as evidenced by reduced cell adhesion to and migration through membrane coated with the integrin α6 ligand laminin. Forced expression of integrin α6 partially rescued GBM neurosphere cells from the differentiating and adhesion/migration-inhibiting effects of KLF9.
    [Show full text]
  • Laminin-Binding Integrin A7,1: Functional Characterization and Expression in Normal and Malignant Melanocytes
    CELL REGULATION, Vol. 2, 805-817, October 1991 Laminin-binding integrin a7,1: functional characterization and expression in normal and malignant melanocytes Randall H. Kramer,*t$ Mai P. Vu,* increased attachment to laminin exhibit much Yao-Fen Cheng,* Daniel M. Ramos,* higher metastatic potential in lung colonization Rupert Timpl,§ and Nahid Waleh 11 assays (reviewed in Liotta et aL, 1986). Fur- *Departments of Stomatology and Anatomy thermore, the presence of intact laminin will en- and the tCardiovascular Research Institute hance lung colonization (Barsky et aL., 1984). University of California These results and others strongly suggest that San Francisco, California 94143 melanoma cells interact with laminin-rich base- §Max-Planck-lnstitut fur Biochemie ment membrane and that this interaction facil- Martinsried, Germany itates their vascular arrest and colonization of IISRI International distant sites. Menlo Park, California 94025 During tissue invasion, metastatic melanoma cells interact with different types of extracellular matrix, including the interstitium and basement A novel integrin, a,#,, that specifically binds with membranes. It is expected, then, that these high affinity to laminin has been identified on mel- malignant cells will express surface adhesion anoma cells. This complex was purified from both receptors with diverse ligand specificities human and murine melanoma cells by laminin-af- (Ruoslahti and Giancotti, 1989). The integrin finity chromatography, and the a7 subunit was re- family of adhesion receptors consists of a large covered after gel electrophoresis. N-terminal amino number of heterodimer receptors that appear acid sequence analysis of the a7 subunit from both to mediate many of the cell-extracellular matrix human and mouse cells verifies that this integrin interactions for melanoma and other cell types is distinct from other a chains in the #I family, al- (Hynes, 1987; Ruoslahti and Pierschbacher, though strikingly similar to the as subunit.
    [Show full text]
  • Human Induced Pluripotent Stem Cell–Derived Podocytes Mature Into Vascularized Glomeruli Upon Experimental Transplantation
    BASIC RESEARCH www.jasn.org Human Induced Pluripotent Stem Cell–Derived Podocytes Mature into Vascularized Glomeruli upon Experimental Transplantation † Sazia Sharmin,* Atsuhiro Taguchi,* Yusuke Kaku,* Yasuhiro Yoshimura,* Tomoko Ohmori,* ‡ † ‡ Tetsushi Sakuma, Masashi Mukoyama, Takashi Yamamoto, Hidetake Kurihara,§ and | Ryuichi Nishinakamura* *Department of Kidney Development, Institute of Molecular Embryology and Genetics, and †Department of Nephrology, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan; ‡Department of Mathematical and Life Sciences, Graduate School of Science, Hiroshima University, Hiroshima, Japan; §Division of Anatomy, Juntendo University School of Medicine, Tokyo, Japan; and |Japan Science and Technology Agency, CREST, Kumamoto, Japan ABSTRACT Glomerular podocytes express proteins, such as nephrin, that constitute the slit diaphragm, thereby contributing to the filtration process in the kidney. Glomerular development has been analyzed mainly in mice, whereas analysis of human kidney development has been minimal because of limited access to embryonic kidneys. We previously reported the induction of three-dimensional primordial glomeruli from human induced pluripotent stem (iPS) cells. Here, using transcription activator–like effector nuclease-mediated homologous recombination, we generated human iPS cell lines that express green fluorescent protein (GFP) in the NPHS1 locus, which encodes nephrin, and we show that GFP expression facilitated accurate visualization of nephrin-positive podocyte formation in
    [Show full text]
  • Cell Adhesion Molecules in Normal Skin and Melanoma
    biomolecules Review Cell Adhesion Molecules in Normal Skin and Melanoma Cian D’Arcy and Christina Kiel * Systems Biology Ireland & UCD Charles Institute of Dermatology, School of Medicine, University College Dublin, D04 V1W8 Dublin, Ireland; [email protected] * Correspondence: [email protected]; Tel.: +353-1-716-6344 Abstract: Cell adhesion molecules (CAMs) of the cadherin, integrin, immunoglobulin, and selectin protein families are indispensable for the formation and maintenance of multicellular tissues, espe- cially epithelia. In the epidermis, they are involved in cell–cell contacts and in cellular interactions with the extracellular matrix (ECM), thereby contributing to the structural integrity and barrier for- mation of the skin. Bulk and single cell RNA sequencing data show that >170 CAMs are expressed in the healthy human skin, with high expression levels in melanocytes, keratinocytes, endothelial, and smooth muscle cells. Alterations in expression levels of CAMs are involved in melanoma propagation, interaction with the microenvironment, and metastasis. Recent mechanistic analyses together with protein and gene expression data provide a better picture of the role of CAMs in the context of skin physiology and melanoma. Here, we review progress in the field and discuss molecular mechanisms in light of gene expression profiles, including recent single cell RNA expression information. We highlight key adhesion molecules in melanoma, which can guide the identification of pathways and Citation: D’Arcy, C.; Kiel, C. Cell strategies for novel anti-melanoma therapies. Adhesion Molecules in Normal Skin and Melanoma. Biomolecules 2021, 11, Keywords: cadherins; GTEx consortium; Human Protein Atlas; integrins; melanocytes; single cell 1213. https://doi.org/10.3390/ RNA sequencing; selectins; tumour microenvironment biom11081213 Academic Editor: Sang-Han Lee 1.
    [Show full text]