1
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Mekbib KY, Muñoz W, Allington G, McGee S, Mehta NH, Shofi JP, Fortes C, Le HT, Nelson-Williams C, Nanda P, Dennis E, Kundishora AJ, Khanna A, Smith H, Ocken J, Greenberg ABW, Wu R, Moreno-De-Luca A, DeSpenza T, Zhao S, Marlier A, Jin SC, Alper SL, Butler WE, Kahle KT. Human genetics and molecular genomics of Chiari malformation type 1. Trends Mol Med 2023; 29:1059-1075. [PMID: 37802664 DOI: 10.1016/j.molmed.2023.08.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 08/29/2023] [Accepted: 08/31/2023] [Indexed: 10/08/2023]
Abstract
Chiari malformation type 1 (CM1) is the most common structural brain disorder involving the craniocervical junction, characterized by caudal displacement of the cerebellar tonsils below the foramen magnum into the spinal canal. Despite the heterogeneity of CM1, its poorly understood patho-etiology has led to a 'one-size-fits-all' surgical approach, with predictably high rates of morbidity and treatment failure. In this review we present multiplex CM1 families, associated Mendelian syndromes, and candidate genes from recent whole exome sequencing (WES) and other genetic studies that suggest a significant genetic contribution from inherited and de novo germline variants impacting transcription regulation, craniovertebral osteogenesis, and embryonic developmental signaling. We suggest that more extensive WES may identify clinically relevant, genetically defined CM1 subtypes distinguished by unique neuroradiographic and neurophysiological endophenotypes.
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Affiliation(s)
- Kedous Y Mekbib
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA; Department of Neurosurgery, Massachusetts General Hospital, Boston, MA, USA; Harvard Center for Hydrocephalus and Neurodevelopmental Disorders, Massachusetts General Hospital, Boston, MA, USA
| | - William Muñoz
- Department of Neurosurgery, Massachusetts General Hospital, Boston, MA, USA; Harvard Center for Hydrocephalus and Neurodevelopmental Disorders, Massachusetts General Hospital, Boston, MA, USA
| | - Garrett Allington
- Department of Pathology, Yale University School of Medicine, New Haven, CT, USA
| | | | - Neel H Mehta
- Department of Neurosurgery, Massachusetts General Hospital, Boston, MA, USA
| | - John P Shofi
- Department of Neurosurgery, Massachusetts General Hospital, Boston, MA, USA
| | - Carla Fortes
- Department of Neurosurgery, Massachusetts General Hospital, Boston, MA, USA
| | - Hao Thi Le
- Department of Neurosurgery, Massachusetts General Hospital, Boston, MA, USA
| | | | - Pranav Nanda
- Department of Neurosurgery, Massachusetts General Hospital, Boston, MA, USA
| | - Evan Dennis
- Department of Neurosurgery, Massachusetts General Hospital, Boston, MA, USA
| | - Adam J Kundishora
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Arjun Khanna
- Department of Neurosurgery, Massachusetts General Hospital, Boston, MA, USA
| | - Hannah Smith
- Department of Neurosurgery, Massachusetts General Hospital, Boston, MA, USA
| | - Jack Ocken
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Ana B W Greenberg
- Department of Neurosurgery, Massachusetts General Hospital, Boston, MA, USA
| | - Rui Wu
- Department of Neurosurgery, Massachusetts General Hospital, Boston, MA, USA
| | - Andres Moreno-De-Luca
- Department of Radiology, Autism and Developmental Medicine Institute, Genomic Medicine Institute, Geisinger, Danville, PA, USA
| | - Tyrone DeSpenza
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Shujuan Zhao
- Department of Genetics, Washington University School of Medicine, St. Louis, MO, USA
| | | | - Sheng Chih Jin
- Department of Genetics, Washington University School of Medicine, St. Louis, MO, USA; Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, USA
| | - Seth L Alper
- Division of Nephrology and Vascular Biology Research Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA; Department of Medicine, Harvard Medical School, Boston, MA, USA
| | - William E Butler
- Department of Neurosurgery, Massachusetts General Hospital, Boston, MA, USA
| | - Kristopher T Kahle
- Department of Neurosurgery, Massachusetts General Hospital, Boston, MA, USA; Harvard Center for Hydrocephalus and Neurodevelopmental Disorders, Massachusetts General Hospital, Boston, MA, USA; Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA, USA; Broad Institute of MIT and Harvard, Cambridge, MA, USA.
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2
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Robert SM, Reeves BC, Kiziltug E, Duy PQ, Karimy JK, Mansuri MS, Marlier A, Allington G, Greenberg ABW, DeSpenza T, Singh AK, Zeng X, Mekbib KY, Kundishora AJ, Nelson-Williams C, Hao LT, Zhang J, Lam TT, Wilson R, Butler WE, Diluna ML, Feinberg P, Schafer DP, Movahedi K, Tannenbaum A, Koundal S, Chen X, Benveniste H, Limbrick DD, Schiff SJ, Carter BS, Gunel M, Simard JM, Lifton RP, Alper SL, Delpire E, Kahle KT. The choroid plexus links innate immunity to CSF dysregulation in hydrocephalus. Cell 2023; 186:764-785.e21. [PMID: 36803604 PMCID: PMC10069664 DOI: 10.1016/j.cell.2023.01.017] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Revised: 09/26/2022] [Accepted: 01/12/2023] [Indexed: 02/18/2023]
Abstract
The choroid plexus (ChP) is the blood-cerebrospinal fluid (CSF) barrier and the primary source of CSF. Acquired hydrocephalus, caused by brain infection or hemorrhage, lacks drug treatments due to obscure pathobiology. Our integrated, multi-omic investigation of post-infectious hydrocephalus (PIH) and post-hemorrhagic hydrocephalus (PHH) models revealed that lipopolysaccharide and blood breakdown products trigger highly similar TLR4-dependent immune responses at the ChP-CSF interface. The resulting CSF "cytokine storm", elicited from peripherally derived and border-associated ChP macrophages, causes increased CSF production from ChP epithelial cells via phospho-activation of the TNF-receptor-associated kinase SPAK, which serves as a regulatory scaffold of a multi-ion transporter protein complex. Genetic or pharmacological immunomodulation prevents PIH and PHH by antagonizing SPAK-dependent CSF hypersecretion. These results reveal the ChP as a dynamic, cellularly heterogeneous tissue with highly regulated immune-secretory capacity, expand our understanding of ChP immune-epithelial cell cross talk, and reframe PIH and PHH as related neuroimmune disorders vulnerable to small molecule pharmacotherapy.
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Affiliation(s)
- Stephanie M Robert
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA
| | - Benjamin C Reeves
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA
| | - Emre Kiziltug
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA
| | - Phan Q Duy
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA
| | - Jason K Karimy
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA
| | - M Shahid Mansuri
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA; Department of Molecular Biophysics and Biochemistry, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Arnaud Marlier
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA
| | - Garrett Allington
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA; Department of Pathology, Yale School of Medicine, New Haven, CT 06520, USA
| | - Ana B W Greenberg
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA
| | - Tyrone DeSpenza
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA
| | - Amrita K Singh
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA
| | - Xue Zeng
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA
| | - Kedous Y Mekbib
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA
| | - Adam J Kundishora
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA
| | | | - Le Thi Hao
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA
| | - Jinwei Zhang
- Institute of Biomedical and Clinical Sciences, University of Exeter Medical School, Hatherly Laboratory, Exeter EX1 2LU, UK
| | - TuKiet T Lam
- Department of Molecular Biophysics and Biochemistry, Yale University School of Medicine, New Haven, CT 06520, USA; Keck MS & Proteomics Resource, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Rashaun Wilson
- Department of Molecular Biophysics and Biochemistry, Yale University School of Medicine, New Haven, CT 06520, USA; Keck MS & Proteomics Resource, Yale University School of Medicine, New Haven, CT 06520, USA
| | - William E Butler
- Department of Neurosurgery, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Michael L Diluna
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA
| | - Philip Feinberg
- Department of Neurobiology, Brudnick Neuropsychiatric Research Institute University of Massachusetts Chan Medical School, Worcester, MA 01655, USA; Medical Scientist Training Program, UMass Chan Medical School, Worcester, MA 01655, USA
| | - Dorothy P Schafer
- Department of Neurobiology, Brudnick Neuropsychiatric Research Institute University of Massachusetts Chan Medical School, Worcester, MA 01655, USA
| | - Kiavash Movahedi
- Laboratory of Cellular and Molecular Immunology, Vrije Universiteit Brussel, 1050 Brussels, Belgium; Myeloid Cell Immunology Laboratory, VIB Center for Inflammation Research, 1050 Brussels, Belgium
| | - Allen Tannenbaum
- Department of Applied Mathematics and Statistics, Stony Brook University, Stony Brook, NY 11794, USA; Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York City, NY 11794, USA
| | - Sunil Koundal
- Department of Anesthesiology, Yale School of Medicine, New Haven, CT 06520, USA
| | - Xinan Chen
- Department of Applied Mathematics and Statistics, Stony Brook University, Stony Brook, NY 11794, USA
| | - Helene Benveniste
- Department of Anesthesiology, Yale School of Medicine, New Haven, CT 06520, USA
| | - David D Limbrick
- Department of Neurosurgery, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Steven J Schiff
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA
| | - Bob S Carter
- Department of Neurosurgery, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Murat Gunel
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA
| | - J Marc Simard
- Department of Neurosurgery, University of Maryland, School of Medicine, Baltimore, MD 21201, USA; Department of Pathology, University of Maryland, School of Medicine, Baltimore, MD 21201, USA; Department of Physiology, University of Maryland, School of Medicine, Baltimore, MD 21201, USA
| | - Richard P Lifton
- Laboratory of Human Genetics and Genomics, the Rockefeller University, New York, NY 10065, USA
| | - Seth L Alper
- Department of Medicine, Harvard Medical School, Boston, MA 02115, USA
| | - Eric Delpire
- Department of Anesthesiology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Kristopher T Kahle
- Department of Neurosurgery, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA; Broad Institute of Harvard and MIT, Cambridge, MA, 02142, USA; Department of Neurosurgery and Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA, USA.
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3
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Abstract
The human lung cellular portfolio, traditionally characterized by cellular morphology and individual markers, is highly diverse, with over 40 cell types and a complex branching structure highly adapted for agile airflow and gas exchange. While constant during adulthood, lung cellular content changes in response to exposure, injury, and infection. Some changes are temporary, but others are persistent, leading to structural changes and progressive lung disease. The recent advance of single-cell profiling technologies allows an unprecedented level of detail and scale to cellular measurements, leading to the rise of comprehensive cell atlas styles of reporting. In this review, we chronical the rise of cell atlases and explore their contributions to human lung biology in health and disease.
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Affiliation(s)
- Taylor S Adams
- Section of Pulmonary, Critical Care and Sleep Medicine, Yale School of Medicine, Yale University, New Haven, Connecticut, USA;
| | - Arnaud Marlier
- Department of Neurosurgery, Yale School of Medicine, Yale University, New Haven, Connecticut, USA
| | - Naftali Kaminski
- Section of Pulmonary, Critical Care and Sleep Medicine, Yale School of Medicine, Yale University, New Haven, Connecticut, USA;
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4
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Timberlake AT, Kiziltug E, Jin SC, Nelson-Williams C, Loring E, Allocco A, Marlier A, Banka S, Stuart H, Passos-Buenos MR, Rosa R, Rogatto SR, Tonne E, Stiegler AL, Boggon TJ, Alperovich M, Steinbacher D, Staffenberg DA, Flores RL, Persing JA, Kahle KT, Lifton RP. De novo mutations in the BMP signaling pathway in lambdoid craniosynostosis. Hum Genet 2023; 142:21-32. [PMID: 35997807 DOI: 10.1007/s00439-022-02477-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 08/08/2022] [Indexed: 01/18/2023]
Abstract
Lambdoid craniosynostosis (CS) is a congenital anomaly resulting from premature fusion of the cranial suture between the parietal and occipital bones. Predominantly sporadic, it is the rarest form of CS and its genetic etiology is largely unexplored. Exome sequencing of 25 kindreds, including 18 parent-offspring trios with sporadic lambdoid CS, revealed a marked excess of damaging (predominantly missense) de novo mutations that account for ~ 40% of sporadic cases. These mutations clustered in the BMP signaling cascade (P = 1.6 × 10-7), including mutations in genes encoding BMP receptors (ACVRL1 and ACVR2A), transcription factors (SOX11, FOXO1) and a transcriptional co-repressor (IFRD1), none of which have been implicated in other forms of CS. These missense mutations are at residues critical for substrate or target sequence recognition and many are inferred to cause genetic gain-of-function. Additionally, mutations in transcription factor NFIX were implicated in syndromic craniosynostosis affecting diverse sutures. Single cell RNA sequencing analysis of the mouse lambdoid suture identified enrichment of mutations in osteoblast precursors (P = 1.6 × 10-6), implicating perturbations in the balance between proliferation and differentiation of osteoprogenitor cells in lambdoid CS. The results contribute to the growing knowledge of the genetics of CS, have implications for genetic counseling, and further elucidate the molecular etiology of premature suture fusion.
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Affiliation(s)
- Andrew T Timberlake
- Hansjörg Wyss Department of Plastic Surgery, New York University Langone Medical Center, New York, NY, USA.
| | - Emre Kiziltug
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA
| | - Sheng Chih Jin
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA.,Department of Genetics, Washington University School of Medicine, St Louis, MO, USA
| | | | - Erin Loring
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA
| | | | - August Allocco
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Arnaud Marlier
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Siddharth Banka
- Division of Evolution and Genomic Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, M13 9WL, UK.,Manchester Centre for Genomic Medicine, Health Innovation Manchester, St Mary's Hospital, Manchester University NHS Foundation Trust, Manchester, M13 9WL, UK
| | - Helen Stuart
- Division of Evolution and Genomic Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, M13 9WL, UK.,Manchester Centre for Genomic Medicine, Health Innovation Manchester, St Mary's Hospital, Manchester University NHS Foundation Trust, Manchester, M13 9WL, UK
| | | | - Rafael Rosa
- Clinical Genetics, UFCSPA and Irmandade da Santa Casa de Misericórdia de Porto Alegre (ISCMPA), Porto Alegre, RS, Brazil
| | - Silvia R Rogatto
- Neogene Laboratory, Research Center (CIPE), AC Camargo Cancer Center, São Paulo, SP, Brazil
| | - Elin Tonne
- Department of Medical Genetics, Oslo University Hospital, Oslo, Norway.,University of Oslo, Oslo, Norway
| | - Amy L Stiegler
- Department of Pharmacology, Yale University, New Haven, CT, USA
| | - Titus J Boggon
- Department of Pharmacology, Yale University, New Haven, CT, USA
| | - Michael Alperovich
- Section of Plastic and Reconstructive Surgery, Yale University School of Medicine, New Haven, CT, USA
| | - Derek Steinbacher
- Section of Plastic and Reconstructive Surgery, Yale University School of Medicine, New Haven, CT, USA
| | - David A Staffenberg
- Hansjörg Wyss Department of Plastic Surgery, New York University Langone Medical Center, New York, NY, USA
| | - Roberto L Flores
- Hansjörg Wyss Department of Plastic Surgery, New York University Langone Medical Center, New York, NY, USA
| | - John A Persing
- Section of Plastic and Reconstructive Surgery, Yale University School of Medicine, New Haven, CT, USA
| | - Kristopher T Kahle
- Department of Neurosurgery, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA.,Broad Institute of Harvard and Massachusetts Institute of Technology, Boston, MA, USA.,Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA, USA
| | - Richard P Lifton
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA. .,Laboratory of Human Genetics and Genomics, The Rockefeller University, New York, NY, USA.
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5
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Shin NS, Marlier A, Xu L, Doilicho N, Linberg D, Guo J, Cantley LG. Authors' Reply: Most Arginase-1 Positive Cells Are Likely Injured S3 Proximal Tubular Cells Carrying Upregulated Phagocytotic Capacity rather than M2 Macrophages-Too Many To Be True. J Am Soc Nephrol 2022; 33:2124-2125. [PMID: 36316094 PMCID: PMC9678031 DOI: 10.1681/asn.2022070836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Affiliation(s)
- Naomi S. Shin
- Mount Auburn Hospital, Harvard Medical School, Cambridge, Massachusetts
| | | | - Leyuan Xu
- Section of Nephrology, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Natnael Doilicho
- Section of Nephrology, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
| | | | - Jiankan Guo
- Section of Nephrology, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Lloyd G. Cantley
- Section of Nephrology, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
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6
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Swanson KV, Girnary M, Alves T, Ting JPY, Divaris K, Beck J, Pucinelli CM, da Silva RAB, Uyan D, Wilson J, Seaman WT, Webster-Cyriaque J, Vias N, Jiao Y, Cantley L, Marlier A, Arnold RR, Marchesan JT. Interferon activated gene 204 protects against bone loss in experimental periodontitis. J Periodontol 2022; 93:1366-1377. [PMID: 35404474 PMCID: PMC9489626 DOI: 10.1002/jper.21-0668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 03/03/2022] [Accepted: 03/31/2022] [Indexed: 11/07/2022]
Abstract
BACKGROUND Periodontal destruction can be the result of different known and yet-to-be-discovered biological pathways. Recent human genetic association studies have implicated interferon-gamma inducible protein 16 (IFI16) and absent in melanoma 2 (AIM2) with high periodontal interleukin (IL)-1β levels and more destructive disease, but mechanistic evidence is lacking. Here, we sought to experimentally validate these observational associations and better understand IFI16 and AIM2's roles in periodontitis. METHODS Periodontitis was induced in Ifi204-/- (IFI16 murine homolog) and Aim2-/- mice using the ligature model. Chimeric mice were created to identify the main source cells of Ifi204 in the periodontium. IFI16-silenced human endothelial cells were treated with periodontal pathogens in vitro. Periodontal tissues from Ifi204-/- mice were evaluated for alveolar bone (micro-CT), cell inflammatory infiltration (MPO+ staining), Il1b (qRT-PCR), and osteoclast numbers (cathepsin K+ staining). RESULTS Ifi204-deficient mice> exhibited >20% higher alveolar bone loss than wild-type (WT) (P < 0.05), while no significant difference was found in Aim2-/- mice. Ifi204's effect on bone loss was primarily mediated by a nonbone marrow source and was independent of Aim2. Ifi204-deficient mice had greater neutrophil/macrophage trafficking into gingival tissues regardless of periodontitis development compared to WT. In human endothelial cells, IFI16 decreased the chemokine response to periodontal pathogens. In murine periodontitis, Ifi204 depletion elevated gingival Il1b and increased osteoclast numbers at diseased sites (P < 0.05). CONCLUSIONS These findings support IFI16's role as a novel regulator of inflammatory cell trafficking to the periodontium that protects against bone loss and offers potential targets for the development of new periodontal disease biomarkers and therapeutics.
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Affiliation(s)
- Karen V Swanson
- Division of Infectious Diseases, School of Medicine, University of North Carolina, Chapel Hill, NC, USA
| | - Mustafa Girnary
- Curriculum in Doctor of Dental Surgery, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Tomaz Alves
- Division of Comprehensive Oral Health, Adams School of Dentistry, University of North Carolina, Chapel Hill, NC, USA
| | - Jenny PY Ting
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Kimon Divaris
- Division of Pediatric and Public Health, Adams School of Dentistry, University of North Carolina, Chapel Hill, NC, USA
| | - Jim Beck
- Division of Comprehensive Oral Health, Adams School of Dentistry, University of North Carolina, Chapel Hill, NC, USA
| | - Carolina Maschietto Pucinelli
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Raquel Assed Bezerra da Silva
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Dilek Uyan
- Division of Comprehensive Oral Health, Adams School of Dentistry, University of North Carolina, Chapel Hill, NC, USA
| | - Justin Wilson
- Department of Immunobiology, College of Medicine, The University of Arizona, Tucson, AZ, USA
| | - William T. Seaman
- Division of Oral and Craniofacial Health Sciences, Adams School of Dentistry, University of North Carolina, Chapel Hill, NC, USA
| | - Jennifer Webster-Cyriaque
- Division of Oral and Craniofacial Health Sciences, Adams School of Dentistry, University of North Carolina, Chapel Hill, NC, USA
| | - Nishma Vias
- Curriculum in Doctor of Dental Surgery, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Yizu Jiao
- Curriculum in Doctor of Dental Surgery, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Lloyd Cantley
- Department of Internal Medicine, Yale University, New Haven, CT, USA
| | - Arnaud Marlier
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Roland R. Arnold
- Division of Diagnostic Sciences, Adams School of Dentistry, University of North Carolina, Chapel Hill, NC, USA
| | - Julie T. Marchesan
- Division of Comprehensive Oral Health, Adams School of Dentistry, University of North Carolina, Chapel Hill, NC, USA
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7
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Shin NS, Marlier A, Xu L, Doilicho N, Linberg D, Guo J, Cantley LG. Arginase-1 Is Required for Macrophage-Mediated Renal Tubule Regeneration. J Am Soc Nephrol 2022; 33:1077-1086. [PMID: 35577558 PMCID: PMC9161787 DOI: 10.1681/asn.2021121548] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 03/22/2022] [Indexed: 11/03/2022] Open
Abstract
BACKGROUND After kidney injury, macrophages transition from initial proinflammatory activation to a proreparative phenotype characterized by expression of arginase-1 (Arg1), mannose receptor 1 (Mrc1), and macrophage scavenger receptor 1 (Msr1). The mechanism by which these alternatively activated macrophages promote repair is unknown. METHODS We characterized the macrophage and renal responses after ischemia-reperfusion injury with contralateral nephrectomy in LysM-Cre;Arg1fl/fl mice and littermate controls and used in vitro coculture of macrophages and tubular cells to determine how macrophage-expressed arginase-1 promotes kidney repair. RESULTS After ischemia-reperfusion injury with contralateral nephrectomy, Arg1-expressing macrophages were almost exclusively located in the outer stripe of the medulla adjacent to injured S3 tubule segments containing luminal debris or casts. Macrophage Arg1 expression was reduced by more than 90% in injured LysM-Cre;Arg1fl/fl mice, resulting in decreased mouse survival, decreased renal tubular cell proliferation and decreased renal repair compared with littermate controls. In vitro studies demonstrate that tubular cells exposed apically to dead cell debris secrete high levels of GM-CSF and induce reparative macrophage activation, with those macrophages in turn secreting Arg1-dependent factor(s) that directly stimulate tubular cell proliferation. CONCLUSIONS GM-CSF-induced, proreparative macrophages express arginase-1, which is required for the S3 tubular cell proliferative response that promotes renal repair after ischemia-reperfusion injury.
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Affiliation(s)
- Naomi S. Shin
- Section of Nephrology, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Arnaud Marlier
- Department of Cellular and Molecular Physiology, Centers for Mendelian Genomics, Yale University School of Medicine, New Haven, Connecticut
| | - Leyuan Xu
- Section of Nephrology, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Natnael Doilicho
- Section of Nephrology, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
| | | | - Jiankan Guo
- Section of Nephrology, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Lloyd G. Cantley
- Section of Nephrology, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
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8
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Duy PQ, Weise SC, Marini C, Li XJ, Liang D, Dahl PJ, Ma S, Spajic A, Dong W, Juusola J, Kiziltug E, Kundishora AJ, Koundal S, Pedram MZ, Torres-Fernández LA, Händler K, De Domenico E, Becker M, Ulas T, Juranek SA, Cuevas E, Hao LT, Jux B, Sousa AMM, Liu F, Kim SK, Li M, Yang Y, Takeo Y, Duque A, Nelson-Williams C, Ha Y, Selvaganesan K, Robert SM, Singh AK, Allington G, Furey CG, Timberlake AT, Reeves BC, Smith H, Dunbar A, DeSpenza T, Goto J, Marlier A, Moreno-De-Luca A, Yu X, Butler WE, Carter BS, Lake EMR, Constable RT, Rakic P, Lin H, Deniz E, Benveniste H, Malvankar NS, Estrada-Veras JI, Walsh CA, Alper SL, Schultze JL, Paeschke K, Doetzlhofer A, Wulczyn FG, Jin SC, Lifton RP, Sestan N, Kolanus W, Kahle KT. Impaired neurogenesis alters brain biomechanics in a neuroprogenitor-based genetic subtype of congenital hydrocephalus. Nat Neurosci 2022; 25:458-473. [PMID: 35379995 PMCID: PMC9664907 DOI: 10.1038/s41593-022-01043-3] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 02/28/2022] [Indexed: 01/16/2023]
Abstract
Hydrocephalus, characterized by cerebral ventricular dilatation, is routinely attributed to primary defects in cerebrospinal fluid (CSF) homeostasis. This fosters CSF shunting as the leading reason for brain surgery in children despite considerable disease heterogeneity. In this study, by integrating human brain transcriptomics with whole-exome sequencing of 483 patients with congenital hydrocephalus (CH), we found convergence of CH risk genes in embryonic neuroepithelial stem cells. Of all CH risk genes, TRIM71/lin-41 harbors the most de novo mutations and is most specifically expressed in neuroepithelial cells. Mice harboring neuroepithelial cell-specific Trim71 deletion or CH-specific Trim71 mutation exhibit prenatal hydrocephalus. CH mutations disrupt TRIM71 binding to its RNA targets, causing premature neuroepithelial cell differentiation and reduced neurogenesis. Cortical hypoplasia leads to a hypercompliant cortex and secondary ventricular enlargement without primary defects in CSF circulation. These data highlight the importance of precisely regulated neuroepithelial cell fate for normal brain-CSF biomechanics and support a clinically relevant neuroprogenitor-based paradigm of CH.
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Affiliation(s)
- Phan Q Duy
- Department of Neuroscience and Kavli Institute for Neuroscience, Yale University School of Medicine, New Haven, CT, USA.,Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA.,Medical Scientist Training Program, Yale University School of Medicine, New Haven, CT, USA
| | - Stefan C Weise
- Molecular Immunology and Cell Biology, Life & Medical Sciences Institute (LIMES), University of Bonn, Bonn, Germany
| | - Claudia Marini
- Institute for Cell Biology and Neurobiology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Xiao-Jun Li
- Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, USA.,Center for Hearing and Balance, Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Dan Liang
- Department of Neuroscience and Kavli Institute for Neuroscience, Yale University School of Medicine, New Haven, CT, USA
| | - Peter J Dahl
- Microbial Sciences Institute, Yale University, West Haven, CT, USA.,Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT, USA
| | - Shaojie Ma
- Department of Neuroscience and Kavli Institute for Neuroscience, Yale University School of Medicine, New Haven, CT, USA
| | - Ana Spajic
- Department of Neuroscience and Kavli Institute for Neuroscience, Yale University School of Medicine, New Haven, CT, USA
| | - Weilai Dong
- Laboratory of Human Genetics and Genomics, The Rockefeller University, New York, NY, USA
| | | | - Emre Kiziltug
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Adam J Kundishora
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Sunil Koundal
- Department of Anesthesiology, Yale University School of Medicine, New Haven, CT, USA
| | - Maysam Z Pedram
- Department of Anesthesiology, Yale University School of Medicine, New Haven, CT, USA
| | - Lucia A Torres-Fernández
- Molecular Immunology and Cell Biology, Life & Medical Sciences Institute (LIMES), University of Bonn, Bonn, Germany
| | - Kristian Händler
- Systems Medicine, Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE), Bonn, Germany.,Genomics and Immunoregulation, Life & Medical Sciences (LIMES) Institute, University of Bonn, Bonn, Germany.,Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE). PRECISE Platform for Genomics and Epigenomics at DZNE and University of Bonn, Bonn, Germany
| | - Elena De Domenico
- Systems Medicine, Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE), Bonn, Germany.,Genomics and Immunoregulation, Life & Medical Sciences (LIMES) Institute, University of Bonn, Bonn, Germany.,Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE). PRECISE Platform for Genomics and Epigenomics at DZNE and University of Bonn, Bonn, Germany
| | - Matthias Becker
- Systems Medicine, Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE), Bonn, Germany.,Genomics and Immunoregulation, Life & Medical Sciences (LIMES) Institute, University of Bonn, Bonn, Germany.,Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE). PRECISE Platform for Genomics and Epigenomics at DZNE and University of Bonn, Bonn, Germany
| | - Thomas Ulas
- Systems Medicine, Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE), Bonn, Germany.,Genomics and Immunoregulation, Life & Medical Sciences (LIMES) Institute, University of Bonn, Bonn, Germany.,Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE). PRECISE Platform for Genomics and Epigenomics at DZNE and University of Bonn, Bonn, Germany
| | - Stefan A Juranek
- Department of Oncology, Hematology and Rheumatology, University Hospital Bonn, Bonn, Germany
| | - Elisa Cuevas
- Stem Cells and Regenerative Medicine Section, University College London Great Ormond Street Institute of Child Health, London, UK
| | - Le Thi Hao
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Bettina Jux
- Molecular Immunology and Cell Biology, Life & Medical Sciences Institute (LIMES), University of Bonn, Bonn, Germany
| | - André M M Sousa
- Department of Neuroscience and Kavli Institute for Neuroscience, Yale University School of Medicine, New Haven, CT, USA
| | - Fuchen Liu
- Department of Neuroscience and Kavli Institute for Neuroscience, Yale University School of Medicine, New Haven, CT, USA
| | - Suel-Kee Kim
- Department of Neuroscience and Kavli Institute for Neuroscience, Yale University School of Medicine, New Haven, CT, USA
| | - Mingfeng Li
- Department of Neuroscience and Kavli Institute for Neuroscience, Yale University School of Medicine, New Haven, CT, USA
| | - Yiying Yang
- Yale Stem Cell Center, Yale University School of Medicine, New Haven, CT, USA
| | - Yutaka Takeo
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Alvaro Duque
- Department of Neuroscience and Kavli Institute for Neuroscience, Yale University School of Medicine, New Haven, CT, USA
| | | | - Yonghyun Ha
- Department of Radiology and Biomedical Imaging, Yale University School of Medicine, New Haven, CT, USA
| | - Kartiga Selvaganesan
- Department of Radiology and Biomedical Imaging, Yale University School of Medicine, New Haven, CT, USA
| | - Stephanie M Robert
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Amrita K Singh
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Garrett Allington
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Charuta G Furey
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Andrew T Timberlake
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA
| | - Benjamin C Reeves
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Hannah Smith
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Ashley Dunbar
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Tyrone DeSpenza
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - June Goto
- Division of Pediatric Neurosurgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Arnaud Marlier
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Andres Moreno-De-Luca
- Department of Radiology, Autism & Developmental Medicine Institute, Genomic Medicine Institute, Geisinger, Danville, PA, USA
| | - Xin Yu
- Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - William E Butler
- Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Bob S Carter
- Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Evelyn M R Lake
- Department of Radiology and Biomedical Imaging, Yale University School of Medicine, New Haven, CT, USA
| | - R Todd Constable
- Department of Radiology and Biomedical Imaging, Yale University School of Medicine, New Haven, CT, USA
| | - Pasko Rakic
- Department of Neuroscience and Kavli Institute for Neuroscience, Yale University School of Medicine, New Haven, CT, USA
| | - Haifan Lin
- Yale Stem Cell Center, Yale University School of Medicine, New Haven, CT, USA
| | - Engin Deniz
- Department of Pediatrics, Yale University School of Medicine, New Haven, CT, USA
| | - Helene Benveniste
- Department of Anesthesiology, Yale University School of Medicine, New Haven, CT, USA
| | - Nikhil S Malvankar
- Microbial Sciences Institute, Yale University, West Haven, CT, USA.,Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT, USA
| | - Juvianee I Estrada-Veras
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD, USA.,Pediatric Subspecialty Genetics Walter Reed National Military Medical Center, Bethesda, MD, USA.,Murtha Cancer Center/Research Program, Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
| | - Christopher A Walsh
- Division of Genetics and Genomics, Manton Center for Orphan Disease Research, Department of Pediatrics, and Howard Hughes Medical Institute, Boston Children's Hospital, Boston, MA, USA.,Departments of Pediatrics and Neurology, Harvard Medical School, Boston, MA, USA.,Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Seth L Alper
- Broad Institute of MIT and Harvard, Cambridge, MA, USA.,Division of Nephrology and Vascular Biology Research Center, Beth Israel Deaconess Medical Center and Department of Medicine, Harvard Medical School, Boston, MA, USA
| | - Joachim L Schultze
- Systems Medicine, Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE), Bonn, Germany.,Genomics and Immunoregulation, Life & Medical Sciences (LIMES) Institute, University of Bonn, Bonn, Germany.,Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE). PRECISE Platform for Genomics and Epigenomics at DZNE and University of Bonn, Bonn, Germany
| | - Katrin Paeschke
- Department of Oncology, Hematology and Rheumatology, University Hospital Bonn, Bonn, Germany
| | - Angelika Doetzlhofer
- Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, USA.,Center for Hearing and Balance, Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - F Gregory Wulczyn
- Institute for Cell Biology and Neurobiology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Sheng Chih Jin
- Department of Genetics, Washington University School of Medicine, St. Louis, MO, USA
| | - Richard P Lifton
- Laboratory of Human Genetics and Genomics, The Rockefeller University, New York, NY, USA
| | - Nenad Sestan
- Department of Neuroscience and Kavli Institute for Neuroscience, Yale University School of Medicine, New Haven, CT, USA
| | - Waldemar Kolanus
- Molecular Immunology and Cell Biology, Life & Medical Sciences Institute (LIMES), University of Bonn, Bonn, Germany
| | - Kristopher T Kahle
- Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA. .,Division of Genetics and Genomics, Manton Center for Orphan Disease Research, Department of Pediatrics, and Howard Hughes Medical Institute, Boston Children's Hospital, Boston, MA, USA. .,Broad Institute of MIT and Harvard, Cambridge, MA, USA. .,Harvard Center for Hydrocephalus and Neurodevelopmental Disorders, Massachusetts General Hospital, Boston, MA, USA.
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9
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Robert S, Reeves B, Karimy JK, Marlier A, Kiziltug E, DeSpenza T, Singh A, Allington G, Phan D, Zhang J, Kahle KT. 374 Multi-omic Analysis Identifies a SPAK Kinase-regulated Ensemble of Choroid Plexus Ion Transport Proteins Relevant for Post-infectious Hydrocephalus. Neurosurgery 2022. [DOI: 10.1227/neu.0000000000001880_374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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10
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Shin NS, Marlier A, Xu L, Lam T, Cantley LG, Guo JK. Characterization of temporospatial distribution of renal tubular casts by nephron tracking after ischemia-reperfusion injury. Am J Physiol Renal Physiol 2022; 322:F322-F334. [PMID: 35100823 PMCID: PMC8897010 DOI: 10.1152/ajprenal.00284.2021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Renal tubular casts originating from detached epithelial cells after ischemia-reperfusion injury (IRI) can obstruct tubules and negatively impact glomerular filtration rate. Using multiphoton imaging of 400-μm-thick kidney sections, the distribution of casts and morphometric measurement of tubules was performed along the entire nephron for the first time. Tubular nuclei are shed before cell detachment, and visually occlusive casts (grade 3) appeared at 12 h after IRI at the S3/thin descending limb (tDL) junction. Grade 3 casts peaked at 24 h after injury [present in 99% of S3, 78% of tDL, 76% of thin ascending limb (tAL), 60% of medullary thick ascending limb (mTAL), and 10% of connecting tubule segments]. Cast formation in the S3 correlated with selective loss of cell numbers from this tubule segment. By day 3, most mTALs and connecting tubules were cast free, whereas 72% of S3 tubules and 58% of tDLs still contained grade 3 casts. Although bulk phagocytosis of cast material by surviving tubular cells was not observed, mass spectrometry identified large numbers of tryptic peptides in the outer medulla, and trypsin levels were significantly increased in the kidney and urine 24 h after IRI. Administration of either antipain or camostat to inhibit trypsin extended cast burden to the S2, led to sustained accumulation of S3 casts after IRI, but did not affect cast burden in the mTAL or renal function. Our data provide detailed and dynamic mapping of tubular cast formation and resolution after IRI that can inform future interventions to accelerate cast clearance and renal recovery.NEW & NOTEWORTHY This detailed characterization of the dynamic distribution of dead cell debris in ischemically injured kidney tubules reveals which cells in the kidney are most severely injured, when and where tubular casts form, and when (and to a lesser extent, how) they are cleared.
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Affiliation(s)
- Naomi S. Shin
- 1Section of Nephrology, Yale University School of Medicine, New Haven, Connecticut
| | - Arnaud Marlier
- 1Section of Nephrology, Yale University School of Medicine, New Haven, Connecticut
| | - Leyuan Xu
- 1Section of Nephrology, Yale University School of Medicine, New Haven, Connecticut
| | - TuKiet Lam
- 2Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, Connecticut,3Keck MS and Proteomics Resource, WM Keck Foundation Biotechnology Resource, New Haven, Connecticut
| | - Lloyd G. Cantley
- 1Section of Nephrology, Yale University School of Medicine, New Haven, Connecticut
| | - Jian-Kan Guo
- 1Section of Nephrology, Yale University School of Medicine, New Haven, Connecticut
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11
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Kundishora AJ, Peters ST, Pinard A, Duran D, Panchagnula S, Barak T, Miyagishima DF, Dong W, Smith H, Ocken J, Dunbar A, Nelson-Williams C, Haider S, Walker RL, Li B, Zhao H, Thumkeo D, Marlier A, Duy PQ, Diab NS, Reeves BC, Robert SM, Sujijantarat N, Stratman AN, Chen YH, Zhao S, Roszko I, Lu Q, Zhang B, Mane S, Castaldi C, López-Giráldez F, Knight JR, Bamshad MJ, Nickerson DA, Geschwind DH, Chen SSL, Storm PB, Diluna ML, Matouk CC, Orbach DB, Alper SL, Smith ER, Lifton RP, Gunel M, Milewicz DM, Jin SC, Kahle KT. DIAPH1 Variants in Non-East Asian Patients With Sporadic Moyamoya Disease. JAMA Neurol 2021; 78:993-1003. [PMID: 34125151 PMCID: PMC8204259 DOI: 10.1001/jamaneurol.2021.1681] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 03/31/2021] [Indexed: 12/18/2022]
Abstract
Importance Moyamoya disease (MMD), a progressive vasculopathy leading to narrowing and ultimate occlusion of the intracranial internal carotid arteries, is a cause of childhood stroke. The cause of MMD is poorly understood, but genetic factors play a role. Several familial forms of MMD have been identified, but the cause of most cases remains elusive, especially among non-East Asian individuals. Objective To assess whether ultrarare de novo and rare, damaging transmitted variants with large effect sizes are associated with MMD risk. Design, Setting, and Participants A genetic association study was conducted using whole-exome sequencing case-parent MMD trios in a small discovery cohort collected over 3.5 years (2016-2019); data were analyzed in 2020. Medical records from US hospitals spanning a range of 1 month to 1.5 years were reviewed for phenotyping. Exomes from a larger validation cohort were analyzed to identify additional rare, large-effect variants in the top candidate gene. Participants included patients with MMD and, when available, their parents. All participants who met criteria and were presented with the option to join the study agreed to do so; none were excluded. Twenty-four probands (22 trios and 2 singletons) composed the discovery cohort, and 84 probands (29 trios and 55 singletons) composed the validation cohort. Main Outcomes and Measures Gene variants were identified and filtered using stringent criteria. Enrichment and case-control tests assessed gene-level variant burden. In silico modeling estimated the probability of variant association with protein structure. Integrative genomics assessed expression patterns of MMD risk genes derived from single-cell RNA sequencing data of human and mouse brain tissue. Results Of the 24 patients in the discovery cohort, 14 (58.3%) were men and 18 (75.0%) were of European ancestry. Three of 24 discovery cohort probands contained 2 do novo (1-tailed Poisson P = 1.1 × 10-6) and 1 rare, transmitted damaging variant (12.5% of cases) in DIAPH1 (mammalian diaphanous-1), a key regulator of actin remodeling in vascular cells and platelets. Four additional ultrarare damaging heterozygous DIAPH1 variants (3 unphased) were identified in 3 other patients in an 84-proband validation cohort (73.8% female, 77.4% European). All 6 patients were non-East Asian. Compound heterozygous variants were identified in ena/vasodilator-stimulated phosphoproteinlike protein EVL, a mammalian diaphanous-1 interactor that regulates actin polymerization. DIAPH1 and EVL mutant probands had severe, bilateral MMD associated with transfusion-dependent thrombocytopenia. DIAPH1 and other MMD risk genes are enriched in mural cells of midgestational human brain. The DIAPH1 coexpression network converges in vascular cell actin cytoskeleton regulatory pathways. Conclusions and Relevance These findings provide the largest collection to date of non-East Asian individuals with sporadic MMD harboring pathogenic variants in the same gene. The results suggest that DIAPH1 is a novel MMD risk gene and impaired vascular cell actin remodeling in MMD pathogenesis, with diagnostic and therapeutic ramifications.
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Affiliation(s)
- Adam J. Kundishora
- Department of Internal Medicine, McGovern Medical School, University of Texas Health Science Center, Houston
| | - Samuel T. Peters
- Department of Neurosurgery, University of Mississippi Medical Center, Jackson
| | - Amélie Pinard
- Department of Internal Medicine, McGovern Medical School, University of Texas Health Science Center, Houston
| | - Daniel Duran
- Department of Neurosurgery, University of Mississippi Medical Center, Jackson
| | | | - Tanyeri Barak
- Department of Neurosurgery, Yale School of Medicine, New Haven, Connecticut
- Department of Genetics, Yale School of Medicine, New Haven, Connecticut
- Department of Neuroscience, Yale School of Medicine, New Haven, Connecticut
- Yale Program on Neurogenetics, Yale School of Medicine, New Haven, Connecticut
| | - Danielle F. Miyagishima
- Department of Neurosurgery, Yale School of Medicine, New Haven, Connecticut
- Department of Genetics, Yale School of Medicine, New Haven, Connecticut
- Department of Neuroscience, Yale School of Medicine, New Haven, Connecticut
- Yale Program on Neurogenetics, Yale School of Medicine, New Haven, Connecticut
| | - Weilai Dong
- Department of Genetics, Yale School of Medicine, New Haven, Connecticut
- Laboratory of Human Genetics and Genomics, The Rockefeller University, New York, New York
| | - Hannah Smith
- Department of Internal Medicine, McGovern Medical School, University of Texas Health Science Center, Houston
| | - Jack Ocken
- Department of Internal Medicine, McGovern Medical School, University of Texas Health Science Center, Houston
| | - Ashley Dunbar
- Department of Neurosurgery, Yale School of Medicine, New Haven, Connecticut
| | | | - Shozeb Haider
- Department of Pharmaceutical and Biological Chemistry, University College London School of Pharmacy, London, United Kingdom
| | - Rebecca L. Walker
- Department of Neurology, Center for Autism Research and Treatment, Semel Institute, David Geffen School of Medicine, University of California, Los Angeles
| | - Boyang Li
- Department of Biostatistics, Yale School of Public Health, New Haven, Connecticut
| | - Hongyu Zhao
- Department of Biostatistics, Yale School of Public Health, New Haven, Connecticut
| | - Dean Thumkeo
- Department of Drug Discovery Medicine, Kyoto University, Graduate School of Medicine, Yoshida-Konoe-cho, Sakyo-ku, Kyoto, Japan
| | - Arnaud Marlier
- Department of Neurosurgery, Yale School of Medicine, New Haven, Connecticut
| | - Phan Q. Duy
- Department of Internal Medicine, McGovern Medical School, University of Texas Health Science Center, Houston
| | - Nicholas S. Diab
- Department of Neurosurgery, Yale School of Medicine, New Haven, Connecticut
- Department of Genetics, Yale School of Medicine, New Haven, Connecticut
| | - Benjamin C. Reeves
- Department of Internal Medicine, McGovern Medical School, University of Texas Health Science Center, Houston
| | | | | | - Amber N. Stratman
- Department of Cell Biology and Physiology, Washington University School of Medicine, St Louis, Missouri
| | - Yi-Hsien Chen
- Department of Genetics, Washington University School of Medicine, St Louis, Missouri
| | - Shujuan Zhao
- Department of Genetics, Washington University School of Medicine, St Louis, Missouri
| | - Isabelle Roszko
- Department of Developmental Biology, Center of Regenerative Medicine, Washington University School of Medicine, St Louis, Missouri
| | - Qiongshi Lu
- Department of Biostatistics & Medical Informatics, University of Wisconsin, Madison
| | - Bo Zhang
- Department of Developmental Biology, Center of Regenerative Medicine, Washington University School of Medicine, St Louis, Missouri
| | - Shrikant Mane
- Yale Center for Genome Analysis, West Haven, Connecticut
| | | | | | | | | | | | - Daniel H. Geschwind
- Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles
| | - Shih-Shan Lang Chen
- Division of Neurosurgery, Children's Hospital of Philadelphia, Department of Neurosurgery, University of Pennsylvania Perelman School of Medicine, Philadelphia
| | - Phillip B. Storm
- Division of Neurosurgery, Children's Hospital of Philadelphia, Department of Neurosurgery, University of Pennsylvania Perelman School of Medicine, Philadelphia
| | - Michael L. Diluna
- Department of Neurosurgery, Yale School of Medicine, New Haven, Connecticut
| | - Charles C. Matouk
- Department of Neurosurgery, Yale School of Medicine, New Haven, Connecticut
| | - Darren B. Orbach
- Department of Neurosurgery, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts
| | - Seth L. Alper
- Division of Nephrology and Center for Vascular Biology Research, Beth Israel Deaconess Medical Center, and Department of Medicine, Harvard Medical School, Boston, Massachusetts
| | - Edward R. Smith
- Department of Neurosurgery, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts
| | - Richard P. Lifton
- Department of Genetics, Yale School of Medicine, New Haven, Connecticut
- Laboratory of Human Genetics and Genomics, The Rockefeller University, New York, New York
| | - Murat Gunel
- Department of Neurosurgery, Yale School of Medicine, New Haven, Connecticut
- Department of Genetics, Yale School of Medicine, New Haven, Connecticut
| | - Dianna M. Milewicz
- Department of Internal Medicine, McGovern Medical School, University of Texas Health Science Center, Houston
| | - Sheng Chih Jin
- Department of Genetics, Washington University School of Medicine, St Louis, Missouri
| | - Kristopher T. Kahle
- Department of Neurosurgery, Yale School of Medicine, New Haven, Connecticut
- Department of Pediatrics, Yale School of Medicine, New Haven, Connecticut
- Department of Cellular & Molecular Physiology, Yale School of Medicine, New Haven, Connecticut
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12
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Phan D, Jin SC, Weise S, Marini C, Dong W, Kundishora A, Torres-Fernandez L, Cuevas E, Hao L, Furey CG, Zeng X, Jux B, Sousa A, Liu F, Kim SK, Li M, Yang Y, Takeo Y, Foster D, Nelson-Williams C, Allocco AA, Smith H, Dunbar A, Sullivan W, Ha Y, Selvaganesan K, Sheth A, DeSpenza T, Reeves B, Goto J, Marlier A, Warf BC, Moreno-De-Luca A, Lake E, Constable T, Sestan N, Lin H, Alper S, Slack F, Wulczyn FG, Kolanus W, Lifton RP, Kahle KT. TRIM71 Mutations Cause Human and Murine Congenital Hydrocephalus by Impairing Prenatal Neural Stem Cell Regulation. Neurosurgery 2020. [DOI: 10.1093/neuros/nyaa447_576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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13
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Panchagnula S, Jin SC, Dong W, Kundishora A, Moreno-De-Luca A, Furey CG, Allocco AA, Walker R, Nelson-Williams C, Smith H, Dunbar A, Conine SB, Lu Q, Zen X, Sierant M, Knight J, Sullivan W, Phan D, DeSpenza T, Reeves B, Karimy JK, Marlier A, Castaldi C, Tikhonova I, Li B, Peña; H, Broach J, Kabachelor EM, Ssenyonga P, Hehnly C, Ge L, Keren B, Timberlake AT, Goto J, Mangano FT, Johnston JM, Butler W, Warf BC, Smith ER, Schiff SJ, Limbrick DD, Heuer GG, Jackson EM, Iskandar BJ, Mane S, Haider S, Guclu B, Bayri Y, Sahin Y, Duncan CC, Apuzzo ML, DiLuna ML, Hoffman E, Sestan N, Ment L, Alper S, Bilguvar K, Geschwind D, Günel M, Lifton RP, Kahle KT. Integrative Genomics Implicates Genetic Disruption of Prenatal Neurogenesis in Congenital Hydrocephalus. Neurosurgery 2020. [DOI: 10.1093/neuros/nyaa447_572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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14
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Jin SC, Dong W, Kundishora AJ, Panchagnula S, Moreno-De-Luca A, Furey CG, Allocco AA, Walker RL, Nelson-Williams C, Smith H, Dunbar A, Conine S, Lu Q, Zeng X, Sierant MC, Knight JR, Sullivan W, Duy PQ, DeSpenza T, Reeves BC, Karimy JK, Marlier A, Castaldi C, Tikhonova IR, Li B, Peña HP, Broach JR, Kabachelor EM, Ssenyonga P, Hehnly C, Ge L, Keren B, Timberlake AT, Goto J, Mangano FT, Johnston JM, Butler WE, Warf BC, Smith ER, Schiff SJ, Limbrick DD, Heuer G, Jackson EM, Iskandar BJ, Mane S, Haider S, Guclu B, Bayri Y, Sahin Y, Duncan CC, Apuzzo MLJ, DiLuna ML, Hoffman EJ, Sestan N, Ment LR, Alper SL, Bilguvar K, Geschwind DH, Günel M, Lifton RP, Kahle KT. Exome sequencing implicates genetic disruption of prenatal neuro-gliogenesis in sporadic congenital hydrocephalus. Nat Med 2020; 26:1754-1765. [PMID: 33077954 PMCID: PMC7871900 DOI: 10.1038/s41591-020-1090-2] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Accepted: 09/02/2020] [Indexed: 01/08/2023]
Abstract
Congenital hydrocephalus (CH), characterized by enlarged brain ventricles, is considered a disease of excessive cerebrospinal fluid (CSF) accumulation and thereby treated with neurosurgical CSF diversion with high morbidity and failure rates. The poor neurodevelopmental outcomes and persistence of ventriculomegaly in some post-surgical patients highlight our limited knowledge of disease mechanisms. Through whole-exome sequencing of 381 patients (232 trios) with sporadic, neurosurgically treated CH, we found that damaging de novo mutations account for >17% of cases, with five different genes exhibiting a significant de novo mutation burden. In all, rare, damaging mutations with large effect contributed to ~22% of sporadic CH cases. Multiple CH genes are key regulators of neural stem cell biology and converge in human transcriptional networks and cell types pertinent for fetal neuro-gliogenesis. These data implicate genetic disruption of early brain development, not impaired CSF dynamics, as the primary pathomechanism of a significant number of patients with sporadic CH.
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Affiliation(s)
- Sheng Chih Jin
- Laboratory of Human Genetics and Genomics, The Rockefeller University, New York, NY, USA
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA
- Department of Genetics, Washington University School of Medicine, St. Louis, MO, USA
| | - Weilai Dong
- Laboratory of Human Genetics and Genomics, The Rockefeller University, New York, NY, USA
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA
| | - Adam J Kundishora
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Shreyas Panchagnula
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Andres Moreno-De-Luca
- Autism & Developmental Medicine Institute, Genomic Medicine Institute, Department of Radiology, Geisinger, Danville, PA, USA
| | - Charuta G Furey
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
- Department of Neurosurgery, Barrow Neurological Institute, Phoenix, AZ, USA
| | - August A Allocco
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Rebecca L Walker
- Department of Neurology, Center for Autism Research and Treatment, Semel Institute, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | | | - Hannah Smith
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Ashley Dunbar
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Sierra Conine
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Qiongshi Lu
- Department of Biostatistics & Medical Informatics, University of Wisconsin, Madison, WI, USA
| | - Xue Zeng
- Laboratory of Human Genetics and Genomics, The Rockefeller University, New York, NY, USA
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA
| | - Michael C Sierant
- Laboratory of Human Genetics and Genomics, The Rockefeller University, New York, NY, USA
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA
| | - James R Knight
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA
- Yale Center for Genome Analysis, Yale University, New Haven, CT, USA
| | - William Sullivan
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Phan Q Duy
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Tyrone DeSpenza
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Benjamin C Reeves
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Jason K Karimy
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Arnaud Marlier
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | | | - Irina R Tikhonova
- Yale Center for Genome Analysis, Yale University, New Haven, CT, USA
| | - Boyang Li
- Department of Biostatistics, Yale School of Public Health, New Haven, CT, USA
| | - Helena Perez Peña
- Department of Pharmaceutical and Biological Chemistry, University College London School of Pharmacy, London, UK
| | - James R Broach
- Institute for Personalized Medicine, The Penn State College of Medicine, Hershey, PA, USA
| | | | | | - Christine Hehnly
- Departments of Neurosurgery, Engineering Science & Mechanics, and Physics; Center for Neural Engineering and Infectious Disease Dynamics, The Pennsylvania State University, University Park, PA, USA
| | - Li Ge
- Department of Biostatistics & Medical Informatics, University of Wisconsin, Madison, WI, USA
| | - Boris Keren
- Département de Génétique, Centre de Référence Déficiences Intellectuelles de Causes Rares, Groupe Hospitalier Pitié Salpêtrière et GHUEP Hôpital Trousseau, Sorbonne Université, GRC "Déficience Intellectuelle et Autisme", Paris, France
| | - Andrew T Timberlake
- Hansjörg Wyss Department of Plastic Surgery, New York University Langone Medical Center, New York, NY, USA
| | - June Goto
- Division of Pediatric Neurosurgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Francesco T Mangano
- Division of Pediatric Neurosurgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - James M Johnston
- Department of Neurosurgery, University of Alabama School of Medicine, Birmingham, AL, USA
| | - William E Butler
- Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Benjamin C Warf
- Department of Neurosurgery, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Edward R Smith
- Department of Neurosurgery, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Steven J Schiff
- Departments of Neurosurgery, Engineering Science & Mechanics, and Physics; Center for Neural Engineering and Infectious Disease Dynamics, The Pennsylvania State University, University Park, PA, USA
| | - David D Limbrick
- Department of Neurological Surgery and Pediatrics, Washington University School of Medicine, St. Louis, MO, USA
| | - Gregory Heuer
- Department of Neurosurgery, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
- Division of Neurosurgery, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Eric M Jackson
- Department of Neurosurgery, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Bermans J Iskandar
- Department of Neurological Surgery, University of Wisconsin Medical School, Madison, WI, USA
| | - Shrikant Mane
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA
- Yale Center for Genome Analysis, Yale University, New Haven, CT, USA
| | - Shozeb Haider
- Department of Pharmaceutical and Biological Chemistry, University College London School of Pharmacy, London, UK
| | - Bulent Guclu
- Kartal Dr. Lutfi Kirdar Research and Training Hospital, Istanbul, Turkey
| | - Yasar Bayri
- Department of Neurosurgery, Marmara University School of Medicine, Istanbul, Turkey
| | - Yener Sahin
- Department of Neurosurgery, Marmara University School of Medicine, Istanbul, Turkey
| | - Charles C Duncan
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Michael L J Apuzzo
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Michael L DiLuna
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Ellen J Hoffman
- Yale Child Study Center, Yale University School of Medicine, New Haven, CT, USA
| | - Nenad Sestan
- Department of Neuroscience and Kavli Institute for Neuroscience, Yale School of Medicine, New Haven, CT, USA
| | - Laura R Ment
- Department of Pediatrics, Yale University School of Medicine, New Haven, CT, USA
- Department of Neurology, Yale University School of Medicine, New Haven, CT, USA
| | - Seth L Alper
- Division of Nephrology and Center for Vascular Biology Research, Beth Israel Deaconess Medical Center, Department of Medicine, Harvard Medical School, Boston, MA, USA
| | - Kaya Bilguvar
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA
- Yale Center for Genome Analysis, Yale University, New Haven, CT, USA
| | - Daniel H Geschwind
- Department of Human Genetics, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - Murat Günel
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Richard P Lifton
- Laboratory of Human Genetics and Genomics, The Rockefeller University, New York, NY, USA
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA
| | - Kristopher T Kahle
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA.
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA.
- Department of Cellular & Molecular Physiology, Yale University School of Medicine, New Haven, CT, USA.
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15
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McKnight Q, Jenkins S, Li X, Nelson T, Marlier A, Cantley LG, Finberg KE, Fretz JA. IL-1β Drives Production of FGF-23 at the Onset of Chronic Kidney Disease in Mice. J Bone Miner Res 2020; 35:1352-1362. [PMID: 32154933 PMCID: PMC7363582 DOI: 10.1002/jbmr.4003] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 02/14/2020] [Accepted: 03/04/2020] [Indexed: 12/27/2022]
Abstract
FGF-23 has arisen as an early biomarker of renal dysfunction, but at the onset of chronic kidney disease (CKD), data suggest that FGF-23 may be produced independently of the parathyroid hormone (PTH), 1,25(OH)2 -vitamin D3 signaling axis. Iron status is inversely correlated to the level of circulating FGF-23, and improvement in iron bioavailability within patients correlates with a decrease in FGF-23. Alternately, recent evidence also supports a regulatory role of inflammatory cytokines in the modulation of FGF-23 expression. To determine the identity of the signal from the kidney-inducing upregulation of osteocytic FGF-23 at the onset of CKD, we utilized a mouse model of congenital CKD that fails to properly mature the glomerular capillary tuft. We profiled the sequential presentation of indicators of renal dysfunction, phosphate imbalance, and iron bioavailability and transport to identify the events that initiate osteocytic production of FGF-23 during the onset of CKD. We report here that elevations in circulating intact-FGF-23 coincide with the earliest indicators of renal dysfunction (P14), and precede changes in serum phosphate or iron homeostasis. Serum PTH was also not changed within the first month. Instead, production of the inflammatory protein IL-1β from the kidney and systemic elevation of it in the circulation matched the induction of FGF-23. IL-1β's ability to induce FGF-23 was confirmed on bone chips in culture and within mice in vivo. Furthermore, neutralizing antibody to IL-1β blocked FGF-23 expression in both our congenital model of CKD and a second nephrotoxic serum-mediated model. We conclude that early CKD resembles a situation of primary FGF-23 excess mediated by inflammation. These findings do not preclude that altered mineral availability or anemia can later modulate FGF-23 levels but find that in early CKD they are not the driving stimulus for the initial upregulation of FGF-23. © 2020 American Society for Bone and Mineral Research.
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Affiliation(s)
- Quiana McKnight
- Department of Internal Medicine (Nephrology), Yale University School of Medicine, New Haven, CT, USA
| | - Sarah Jenkins
- Department of Internal Medicine (Nephrology), Yale University School of Medicine, New Haven, CT, USA
| | - Xiuqi Li
- Department of Pathology, Yale University School of Medicine, New Haven, CT, USA
| | - Tracy Nelson
- Department of Orthopaedics and Rehabilitation, Yale University School of Medicine, New Haven, CT, USA
| | - Arnaud Marlier
- Department of Internal Medicine (Nephrology), Yale University School of Medicine, New Haven, CT, USA
| | - Lloyd G Cantley
- Department of Internal Medicine (Nephrology), Yale University School of Medicine, New Haven, CT, USA
| | - Karin E Finberg
- Department of Pathology, Yale University School of Medicine, New Haven, CT, USA
| | - Jackie A Fretz
- Department of Pathology, Yale University School of Medicine, New Haven, CT, USA.,Department of Orthopaedics and Rehabilitation, Yale University School of Medicine, New Haven, CT, USA
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16
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Brill AL, Fischer TT, Walters JM, Marlier A, Sewanan LR, Wilson PC, Johnson EK, Moeckel G, Cantley LG, Campbell SG, Nerbonne JM, Chung HJ, Robert ME, Ehrlich BE. Polycystin 2 is increased in disease to protect against stress-induced cell death. Sci Rep 2020; 10:386. [PMID: 31941974 PMCID: PMC6962458 DOI: 10.1038/s41598-019-57286-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 12/23/2019] [Indexed: 12/12/2022] Open
Abstract
Polycystin 2 (PC2 or TRPP1, formerly TRPP2) is a calcium-permeant Transient Receptor Potential (TRP) cation channel expressed primarily on the endoplasmic reticulum (ER) membrane and primary cilia of all cell and tissue types. Despite its ubiquitous expression throughout the body, studies of PC2 have focused primarily on its role in the kidney, as mutations in PC2 lead to the development of autosomal dominant polycystic kidney disease (ADPKD), a debilitating condition for which there is no cure. However, the endogenous role that PC2 plays in the regulation of general cellular homeostasis remains unclear. In this study, we measure how PC2 expression changes in different pathological states, determine that its abundance is increased under conditions of cellular stress in multiple tissues including human disease, and conclude that PC2-deficient cells have increased susceptibility to cell death induced by stress. Our results offer new insight into the normal function of PC2 as a ubiquitous stress-sensitive protein whose expression is up-regulated in response to cell stress to protect against pathological cell death in multiple diseases.
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Affiliation(s)
- Allison L Brill
- Department of Cellular and Molecular Physiology, Yale University, New Haven, CT, 06510, United States of America
| | - Tom T Fischer
- Department of Pharmacology, Yale University, New Haven, CT, 06510, United States of America.,Institute of Pharmacology, Heidelberg University, Heidelberg, Germany
| | - Jennifer M Walters
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, United States of America.,Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, United States of America
| | - Arnaud Marlier
- Department of Internal Medicine, Yale University, New Haven, CT, 06510, United States of America
| | - Lorenzo R Sewanan
- Department of Biomedical Engineering, Yale University, New Haven, CT, 06510, United States of America
| | - Parker C Wilson
- Department of Pathology, Yale University, New Haven, CT, 06510, United States of America.,Department of Pathology and Immunology, Washington University in St. Louis, St. Louis, MO, 63110, United States of America
| | - Eric K Johnson
- Department of Medicine, Cardiovascular Division, Washington University School of Medicine, St. Louis, MO, 63110, United States of America
| | - Gilbert Moeckel
- Department of Pathology, Yale University, New Haven, CT, 06510, United States of America
| | - Lloyd G Cantley
- Department of Internal Medicine, Yale University, New Haven, CT, 06510, United States of America
| | - Stuart G Campbell
- Department of Biomedical Engineering, Yale University, New Haven, CT, 06510, United States of America
| | - Jeanne M Nerbonne
- Department of Medicine, Cardiovascular Division, Washington University School of Medicine, St. Louis, MO, 63110, United States of America.,Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO, 63110, United States of America
| | - Hee Jung Chung
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, United States of America.,Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, United States of America
| | - Marie E Robert
- Department of Pathology, Yale University, New Haven, CT, 06510, United States of America
| | - Barbara E Ehrlich
- Department of Cellular and Molecular Physiology, Yale University, New Haven, CT, 06510, United States of America. .,Department of Pharmacology, Yale University, New Haven, CT, 06510, United States of America.
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17
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Stoppe C, Averdunk L, Goetzenich A, Soppert J, Marlier A, Kraemer S, Vieten J, Coburn M, Kowark A, Kim BS, Marx G, Rex S, Ochi A, Leng L, Moeckel G, Linkermann A, El Bounkari O, Zarbock A, Bernhagen J, Djudjaj S, Bucala R, Boor P. The protective role of macrophage migration inhibitory factor in acute kidney injury after cardiac surgery. Sci Transl Med 2019; 10:10/441/eaan4886. [PMID: 29769287 DOI: 10.1126/scitranslmed.aan4886] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 12/22/2017] [Accepted: 04/13/2018] [Indexed: 12/20/2022]
Abstract
Acute kidney injury (AKI) represents the most frequent complication after cardiac surgery. Macrophage migration inhibitory factor (MIF) is a stress-regulating cytokine that was shown to protect the heart from myocardial ischemia-reperfusion injury, but its role in the pathogenesis of AKI remains unknown. In an observational study, serum and urinary MIF was quantified in 60 patients scheduled for elective conventional cardiac surgery with the use of cardiopulmonary bypass. Cardiac surgery triggered an increase in MIF serum concentrations, and patients with high circulating MIF (>median) 12 hours after surgery had a significantly reduced risk of developing AKI (relative risk reduction, 72.7%; 95% confidence interval, 12 to 91.5%; P = 0.03). Experimental AKI was induced in wild-type and Mif-/- mice by 30 min of ischemia followed by 6 or 24 hours of reperfusion, or by rhabdomyolysis. Mif-deficient mice exhibited increased tubular cell injury, increased regulated cell death (necroptosis and ferroptosis), and enhanced oxidative stress. Therapeutic administration of recombinant MIF after ischemia-reperfusion in mice ameliorated AKI. In vitro treatment of tubular epithelial cells with recombinant MIF reduced cell death and oxidative stress as measured by glutathione and thiobarbituric acid reactive substances in the setting of hypoxia. Our data provide evidence of a renoprotective role of MIF in experimental ischemia-reperfusion injury by protecting renal tubular epithelial cells, consistent with our observation that high MIF in cardiac surgery patients is associated with a reduced incidence of AKI.
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Affiliation(s)
- Christian Stoppe
- Department of Intensive Care Medicine, University Hospital, Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen, Aachen, Germany.
| | - Luisa Averdunk
- Department of Intensive Care Medicine, University Hospital, Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen, Aachen, Germany
| | - Andreas Goetzenich
- Department of Thoracic, Cardiac and Vascular Surgery, University Hospital, RWTH Aachen, Aachen, Germany
| | - Josefin Soppert
- Department of Intensive Care Medicine, University Hospital, Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen, Aachen, Germany.,Department of Thoracic, Cardiac and Vascular Surgery, University Hospital, RWTH Aachen, Aachen, Germany
| | - Arnaud Marlier
- Department of Nephrology, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Sandra Kraemer
- Department of Thoracic, Cardiac and Vascular Surgery, University Hospital, RWTH Aachen, Aachen, Germany
| | - Jil Vieten
- Department of Intensive Care Medicine, University Hospital, Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen, Aachen, Germany
| | - Mark Coburn
- Department of Anesthesiology, University Hospital, RWTH Aachen, Aachen, Germany
| | - Ana Kowark
- Department of Anesthesiology, University Hospital, RWTH Aachen, Aachen, Germany
| | - Bong-Song Kim
- Department of Plastic and Reconstructive Surgery, Hand Surgery, Burn Center, RWTH Aachen, Aachen, Germany
| | - Gernot Marx
- Department of Intensive Care Medicine, University Hospital, Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen, Aachen, Germany
| | - Steffen Rex
- Department of Anesthesiology, University Hospitals Leuven, Leuven, Belgium
| | - Akinobu Ochi
- Department of Nephropathology, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Lin Leng
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Gilbert Moeckel
- Department of Nephropathology, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Andreas Linkermann
- Division of Nephrology, Department of Internal Medicine III, University Hospital Carl Gustav Carus at the Technische Universität Dresden, Dresden, Germany
| | - Omar El Bounkari
- Department of Vascular Biology, Institute for Stroke and Dementia Research, Klinikum der Universität München, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Alexander Zarbock
- Department of Anesthesiology, Critical Care Medicine and Pain Therapy, University Hospital Münster, Münster, Germany
| | - Jürgen Bernhagen
- Department of Vascular Biology, Institute for Stroke and Dementia Research, Klinikum der Universität München, Ludwig-Maximilians-University Munich, Munich, Germany. .,German Center for Cardiovascular Research (DZHK), partner site Munich Heart Alliance, Munich, Germany.,Munich Cluster for Systems Neurology (EXC 1010 SyNergy), Munich, Germany
| | - Sonja Djudjaj
- Institute of Pathology and Department of Nephrology, University Hospital, RWTH Aachen, Aachen, Germany
| | - Richard Bucala
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Peter Boor
- Institute of Pathology and Department of Nephrology, University Hospital, RWTH Aachen, Aachen, Germany. .,Institute of Molecular Biomedicine, Comenius University, Bratislava, Slovakia
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18
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Ishikawa Y, Fedeles S, Marlier A, Zhang C, Gallagher AR, Lee AH, Somlo S. Spliced XBP1 Rescues Renal Interstitial Inflammation Due to Loss of Sec63 in Collecting Ducts. J Am Soc Nephrol 2019; 30:443-459. [PMID: 30745418 PMCID: PMC6405156 DOI: 10.1681/asn.2018060614] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 01/07/2019] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND SEC63 encodes a resident protein in the endoplasmic reticulum membrane that, when mutated, causes human autosomal dominant polycystic liver disease. Selective inactivation of Sec63 in all distal nephron segments in embryonic mouse kidney results in polycystin-1-mediated polycystic kidney disease (PKD). It also activates the Ire1α-Xbp1 branch of the unfolded protein response, producing Xbp1s, the active transcription factor promoting expression of specific genes to alleviate endoplasmic reticulum stress. Simultaneous inactivation of Xbp1 and Sec63 worsens PKD in this model. METHODS We explored the renal effects of postnatal inactivation of Sec63 alone or with concomitant inactivation of Xbp1 or Ire1α, specifically in the collecting ducts of neonatal mice. RESULTS The later onset of inactivation of Sec63 restricted to the collecting duct does not result in overt activation of the Ire1α-Xbp1 pathway or cause polycystin-1-dependent PKD. Inactivating Sec63 along with either Xbp1 or Ire1α in this model causes interstitial inflammation and associated fibrosis with decline in kidney function over several months. Re-expression of XBP1s in vivo completely rescues the chronic kidney injury observed after inactivation of Sec63 with either Xbp1 or Ire1α. CONCLUSIONS In the absence of Sec63, basal levels of Xbp1s activity in collecting ducts is both necessary and sufficient to maintain proteostasis (protein homeostasis) and protect against inflammation, myofibroblast activation, and kidney functional decline. The Sec63-Xbp1 double knockout mouse offers a novel genetic model of chronic tubulointerstitial kidney injury, using collecting duct proteostasis defects as a platform for discovery of signals that may underlie CKD of disparate etiologies.
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Affiliation(s)
| | | | | | | | | | - Ann-Hwee Lee
- Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, New York
| | - Stefan Somlo
- Departments of Internal Medicine and
- Genetics, Yale University School of Medicine, New Haven, Connecticut; and
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19
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Gassié L, Lombard A, Moraldi T, Bibonne A, Leclerc C, Moreau M, Marlier A, Gilbert T. Hspa9 is required for pronephros specification and formation inXenopus laevis. Dev Dyn 2015; 244:1538-49. [DOI: 10.1002/dvdy.24344] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Revised: 07/29/2015] [Accepted: 08/17/2015] [Indexed: 01/13/2023] Open
Affiliation(s)
- Lionel Gassié
- Université Toulouse 3 Centre de Biologie du Développement; Toulouse France
| | | | - Tiphanie Moraldi
- Université Lyon 1 Institut Universitaire Technologique; Villeurbanne France
| | - Anne Bibonne
- Université Toulouse 3 Centre de Biologie du Développement; Toulouse France
- CNRS UMR 5547; Toulouse France
| | - Catherine Leclerc
- Université Toulouse 3 Centre de Biologie du Développement; Toulouse France
- CNRS UMR 5547; Toulouse France
| | - Marc Moreau
- Université Toulouse 3 Centre de Biologie du Développement; Toulouse France
- CNRS UMR 5547; Toulouse France
| | - Arnaud Marlier
- Yale' School of Medicine Department of Internal Medicine; New Haven Connecticut USA
| | - Thierry Gilbert
- Université Toulouse 3 Centre de Biologie du Développement; Toulouse France
- CNRS UMR 5547; Toulouse France
- Institut National de la Santé et de la Recherche Médicale; Toulouse France
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20
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Marlier A, Huen S, Lengyel P, Cantley L. The Role of p204 in Kidney Injury. FASEB J 2015. [DOI: 10.1096/fasebj.29.1_supplement.807.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Arnaud Marlier
- Internal Medicinesection of Nephrology Yale UniversityNew HavenCTUnited States
| | - Sarah Huen
- Internal Medicinesection of Nephrology Yale UniversityNew HavenCTUnited States
| | - Peter Lengyel
- Internal Medicinesection of Nephrology Yale UniversityNew HavenCTUnited States
| | - Lloyd Cantley
- Internal Medicinesection of Nephrology Yale UniversityNew HavenCTUnited States
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21
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Huen SC, Huynh L, Marlier A, Lee Y, Moeckel GW, Cantley LG. GM-CSF Promotes Macrophage Alternative Activation after Renal Ischemia/Reperfusion Injury. J Am Soc Nephrol 2014; 26:1334-45. [PMID: 25388222 DOI: 10.1681/asn.2014060612] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Accepted: 10/09/2014] [Indexed: 11/03/2022] Open
Abstract
After kidney ischemia/reperfusion (I/R) injury, monocytes home to the kidney and differentiate into activated macrophages. Whereas proinflammatory macrophages contribute to the initial kidney damage, an alternatively activated phenotype can promote normal renal repair. The microenvironment of the kidney during the repair phase mediates the transition of macrophage activation from a proinflammatory to a reparative phenotype. In this study, we show that macrophages isolated from murine kidneys during the tubular repair phase after I/R exhibit an alternative activation gene profile that differs from the canonical alternative activation induced by IL-4-stimulated STAT6 signaling. This unique activation profile can be reproduced in vitro by stimulation of bone marrow-derived macrophages with conditioned media from serum-starved mouse proximal tubule cells. Secreted tubular factors were found to activate macrophage STAT3 and STAT5 but not STAT6, leading to induction of the unique alternative activation pattern. Using STAT3-deficient bone marrow-derived macrophages and pharmacologic inhibition of STAT5, we found that tubular cell-mediated macrophage alternative activation is regulated by STAT5 activation. Both in vitro and after renal I/R, tubular cells expressed GM-CSF, a known STAT5 activator, and this pathway was required for in vitro alternative activation of macrophages by tubular cells. Furthermore, administration of a neutralizing antibody against GM-CSF after renal I/R attenuated kidney macrophage alternative activation and suppressed tubular proliferation. Taken together, these data show that tubular cells can instruct macrophage activation by secreting GM-CSF, leading to a unique macrophage reparative phenotype that supports tubular proliferation after sterile ischemic injury.
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Affiliation(s)
| | | | | | - Yashang Lee
- Section of Nephrology, Department of Medicine
| | - Gilbert W Moeckel
- Department of Pathology, Yale University School of Medicine, New Haven, Connecticut
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Williams K, Colangelo C, Stone K, Chung L, Abbott T, Belcher J, Marlier A, Cantley L, Parikh C. Quantitative proteomics identification of potential protein biomarkers of early recovery after kidney transplant (591.5). FASEB J 2014. [DOI: 10.1096/fasebj.28.1_supplement.591.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kenneth Williams
- W.M. Keck Foundation Biotechnology Laboratory Yale University School of MedicineNew HavenCTUnited States
| | - Christopher Colangelo
- W.M. Keck Foundation Biotechnology Laboratory Yale University School of MedicineNew HavenCTUnited States
| | - Kathryn Stone
- W.M. Keck Foundation Biotechnology Laboratory Yale University School of MedicineNew HavenCTUnited States
| | - Lisa Chung
- W.M. Keck Foundation Biotechnology Laboratory Yale University School of MedicineNew HavenCTUnited States
| | - Thomas Abbott
- W.M. Keck Foundation Biotechnology Laboratory Yale University School of MedicineNew HavenCTUnited States
| | - Justin Belcher
- Internal Medicine Yale University School of MedicineNew HavenCTUnited States
| | - Arnaud Marlier
- Internal Medicine Yale University School of MedicineNew HavenCTUnited States
| | - Lloyd Cantley
- Internal Medicine Yale University School of MedicineNew HavenCTUnited States
| | - Chirag Parikh
- Internal Medicine Yale University School of MedicineNew HavenCTUnited States
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23
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Mason S, Hader C, Marlier A, Moeckel G, Cantley LG. Met activation is required for early cytoprotection after ischemic kidney injury. J Am Soc Nephrol 2013; 25:329-37. [PMID: 24136921 DOI: 10.1681/asn.2013050473] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Renal proximal tubule epithelial cells express high levels of the hepatocyte growth factor receptor Met, and both the receptor and ligand are upregulated after ischemic injury. Activation of the Met receptor after hepatocyte growth factor stimulation in vitro promotes activities involved in kidney repair, including cell survival, migration, and proliferation. However, characterizing the in vivo role of these signaling events in proximal tubule responses to kidney injury has been difficult because global Met knockout results in embryonic lethality due to placental and liver abnormalities. Here, we used γGT-Cre to knockout Met receptor expression selectively in the proximal tubules of mice (γGT-Cre;Met(fl/fl)). The kidneys of these mice developed normally, but exhibited increased initial tubular injury, tubular cell apoptosis, and serum creatinine after ischemia/reperfusion compared with γGT-Cre;Met(+/+) kidneys. These changes in γGT-Cre;Met(fl/fl) mice correlated with a selective reduction in PI3K/Akt activation in response to injury and subsequent decreases in inhibitory phosphorylation of the proapoptotic factor Bad and activating phosphorylation of the ribosomal regulatory protein p70-S6 kinase. Moreover, tubular cell proliferation after ischemia/reperfusion was delayed in γGT-Cre;Met(fl/fl) mice. In conclusion, this study identifies Met-dependent phosphoinositide 3-kinase activation in proximal tubules as a critical determinant of initial tubular cell survival and reparative proliferation after ischemic injury.
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Guo JK, Shi H, Koraishy F, Marlier A, Ding Z, Shan A, Cantley LG. The Terminator mouse is a diphtheria toxin-receptor knock-in mouse strain for rapid and efficient enrichment of desired cell lineages. Kidney Int 2013; 84:1041-6. [PMID: 23739236 PMCID: PMC3775868 DOI: 10.1038/ki.2013.202] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2013] [Revised: 03/19/2013] [Accepted: 03/28/2013] [Indexed: 12/31/2022]
Abstract
Biomedical research often requires primary cultures of specific cell types, which are challenging to obtain at high purity in a reproducible fashion. Here we engineered the murine Rosa26 locus by introducing the diphtheria toxin receptor flanked by loxP sites. The resultant strain was nicknamed the Terminator mouse. This approach results in diphtheria toxin receptor expression in all non-Cre expressing cell types, making these cells susceptible to diphtheria toxin exposure. In primary cultures of kidney cells derived from the Terminator mouse, over 99.99% of cells were dead within 72 hours of diphtheria toxin treatment. After crossing the Terminator with the Podocin-Cre (podocyte specific) mouse or the Ggt-Cre (proximal tubule specific) mouse, diphtheria toxin treatment killed non-Cre expressing cells but spared podocytes and proximal tubule cells, respectively, enriching the primary cultures to over 99% purity based on both Western blotting and immunostaining of marker proteins. Thus, the Terminator mouse can be a useful tool to selectively and reproducibly obtain even low abundant cell types at high quantity and purity.
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Affiliation(s)
- Jian-Kan Guo
- Department of Internal Medicine/Section of Nephrology, Yale University School of Medicine, New Haven, Connecticut, USA
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25
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Guo JK, Marlier A, Shi H, Shan A, Ardito TA, Du ZP, Kashgarian M, Krause DS, Biemesderfer D, Cantley LG. Increased tubular proliferation as an adaptive response to glomerular albuminuria. J Am Soc Nephrol 2011; 23:429-37. [PMID: 22193389 DOI: 10.1681/asn.2011040396] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Renal tubular atrophy accompanies many proteinuric renal diseases, suggesting that glomerular proteinuria injures the tubules. However, local or systemic inflammation and filtration of abnormal proteins known to directly injure tubules are also present in many of these diseases and animal models; therefore, whether glomerular proteinuria directly causes tubular injury is unknown. Here, we examined the renal response to proteinuria induced by selective podocyte loss. We generated mice that express the diphtheria toxin receptor exclusively in podocytes, allowing reproducible dose-dependent, specific ablation of podocytes by administering diphtheria toxin. Ablation of <20% of podocytes resulted in profound albuminuria that resolved over 1-2 weeks after the re-establishment of normal podocyte morphology. Immediately after the onset of albuminuria, proximal tubule cells underwent a transient burst of proliferation without evidence of tubular damage or increased apoptosis, resulting in an increase in total tubular cell numbers. The proliferative response coincided with detection of the growth factor Gas6 in the urine and phosphorylation of the Gas6 receptor Axl in the apical membrane of renal tubular cells. In contrast, ablation of >40% of podocytes led to progressive glomerulosclerosis, profound tubular injury, and renal failure. These data suggest that glomerular proteinuria in the absence of severe structural glomerular injury activates tubular proliferation, potentially as an adaptive response to minimize the loss of filtered proteins.
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Affiliation(s)
- Jian-Kan Guo
- Section of Nephrology and Department of Internal Medicine, Yale University School of Medicine, New Haven, CT 06520, USA.
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26
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Veron D, Bertuccio CA, Marlier A, Reidy K, Garcia AM, Jimenez J, Velazquez H, Kashgarian M, Moeckel GW, Tufro A. Podocyte vascular endothelial growth factor (Vegf₁₆₄) overexpression causes severe nodular glomerulosclerosis in a mouse model of type 1 diabetes. Diabetologia 2011; 54:1227-41. [PMID: 21318407 PMCID: PMC3397150 DOI: 10.1007/s00125-010-2034-z] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2010] [Accepted: 11/19/2010] [Indexed: 01/11/2023]
Abstract
AIMS/HYPOTHESIS The pathogenic role of excessive vascular endothelial growth factor (VEGF)-A in diabetic nephropathy has not been defined. We sought to test whether increased podocyte VEGF-A signalling determines the severity of diabetic glomerulopathy. METHODS Podocyte-specific, doxycycline-inducible Vegf₁₆₄ (the most abundant Vegfa isoform) overexpressing adult transgenic mice were made diabetic with low doses of streptozotocin and examined 12 weeks after onset of diabetes. We studied diabetic and non-diabetic transgenic mice fed a standard or doxycycline-containing diet. VEGF-A and albuminuria were measured by ELISA, creatinine was measured by HPLC, renal morphology was examined by light and electron microscopy, and gene expression was assessed by quantitative PCR, immunoblotting and immunohistochemistry. RESULTS Podocyte Vegf₁₆₄ overexpression in our mouse model of diabetes resulted in advanced diabetic glomerulopathy, characterised by Kimmelstiel-Wilson-like nodular glomerulosclerosis, microaneurysms, mesangiolysis, glomerular basement membrane thickening, podocyte effacement and massive proteinuria associated with hyperfiltration. It also led to increased VEGF receptor 2 and semaphorin3a levels, as well as nephrin and matrix metalloproteinase-2 downregulation, whereas circulating VEGF-A levels were similar to those in control diabetic mice. CONCLUSIONS/INTERPRETATION Collectively, these data demonstrate that increased podocyte Vegf₁₆₄ signalling dramatically worsens diabetic nephropathy in a streptozotocin-induced mouse model of diabetes, resulting in nodular glomerulosclerosis and massive proteinuria. This suggests that local rather than systemic VEGF-A levels determine the severity of diabetic nephropathy and that semaphorin3a signalling and matrix metalloproteinase-2 dysregulation are mechanistically involved in severe diabetic glomerulopathy.
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Affiliation(s)
- D. Veron
- Department of Pediatrics, Yale University School of Medicine, 333 Cedar St, P.O. Box 208064, New Haven, CT 06520-8064, USA
| | - C. A. Bertuccio
- Department of Pediatrics, Yale University School of Medicine, 333 Cedar St, P.O. Box 208064, New Haven, CT 06520-8064, USA
| | - A. Marlier
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT, USA
| | - K. Reidy
- Department of Pediatrics, Albert Einstein College of Medicine, Bronx, NY, USA
| | - A. M. Garcia
- Department of Internal Medicine, Albert Einstein College of Medicine, Bronx, NY, USA
| | - J. Jimenez
- Analytical Imaging Facility, Albert Einstein College of Medicine, Bronx, NY, USA
| | - H. Velazquez
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT, USA
| | - M. Kashgarian
- Department of Pathology, Yale University School of Medicine, New Haven, CT, USA
| | - G. W. Moeckel
- Department of Pathology, Yale University School of Medicine, New Haven, CT, USA
| | - A. Tufro
- Department of Pediatrics, Yale University School of Medicine, 333 Cedar St, P.O. Box 208064, New Haven, CT 06520-8064, USA
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27
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Veron D, Reidy K, Marlier A, Bertuccio C, Villegas G, Jimenez J, Kashgarian M, Tufro A. Induction of podocyte VEGF164 overexpression at different stages of development causes congenital nephrosis or steroid-resistant nephrotic syndrome. Am J Pathol 2010; 177:2225-33. [PMID: 20829436 DOI: 10.2353/ajpath.2010.091146] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The tight regulation of vascular endothelial growth factor-A (VEGF-A) signaling is required for both the development and maintenance of the glomerular filtration barrier, but the pathogenic role of excessive amounts of VEGF-A detected in multiple renal diseases remains poorly defined. We generated inducible transgenic mice that overexpress podocyte VEGF164 at any chosen stage of development. In this study, we report the phenotypes that result from podocyte VEGF164 excess during organogenesis and after birth. On doxycycline induction, podocin-rtTA:tet-O-VEGF164 mice express twofold higher kidney VEGF164 levels than single transgenic mice, localized to podocytes. Podocyte VEGF164 overexpression during organogenesis resulted in albuminuria at birth and was associated with glomerulomegaly, uniform podocyte effacement, very few and wide foot processes joined by occluding junctions, almost complete absence of slit diaphragms, and swollen endothelial cells with few fenestrae as revealed by transmission electron microscopy. Podocyte VEGF164 overexpression after birth caused massive albuminuria in 70% of 2-week-old mice, glomerulomegaly, and minimal changes on light microscopy. Transmission electron microscopy showed podocyte effacement and fusion and morphologically normal endothelial cells. Podocyte VEGF164 overexpression induced nephrin down-regulation without podocyte loss. VEGF164-induced abnormalities were reversible on removal of doxycycline and were unresponsive to methylprednisolone. Collectively, the data suggest that moderate podocyte VEGF164 overexpression during organogenesis results in congenital nephrotic syndrome, whereas VEGF164 overexpression after birth induces a steroid-resistant minimal change like-disease in mice.
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Affiliation(s)
- Delma Veron
- Department of Pediatrics, Yale University School of Medicine, 333 Cedar St., P.O. Box 208064, New Haven, CT 06520-8064, USA
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28
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Ueland J, Yuan A, Marlier A, Gallagher AR, Karihaloo A. A novel role for the chemokine receptor Cxcr4 in kidney morphogenesis: an in vitro study. Dev Dyn 2009; 238:1083-91. [PMID: 19384956 DOI: 10.1002/dvdy.21943] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The CXCR4 chemokine receptor is involved in hematopoietic stem cell homing, neuronal development, and angiogenesis. We show a significant new role for this receptor in epithelial patterning and renal morphogenesis. This receptor is expressed in the ureteric bud (UB) and the metanephric mesenchyme (MM). Stimulation of Cxcr4 in renal tubular cells leads to activation of multiple signaling pathways and tubulogenesis and cell migration. Knocking down of this receptor in tubular cells leads to cyst formation. Inactivation of this receptor in embryonic kidney explants results in impaired UB branching and mesenchymal tubulogenesis. The data presented here point to its importance in the process of mesenchymal-to-epithelial transitioning (MET), a crucial developmental process in the embryonic kidney. A number of genes important for normal tubulogenesis and MET are decreased upon CXCR4 inactivation.
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Affiliation(s)
- Joseph Ueland
- Department of Internal Medicine, Section of Nephrology, Yale School of Medicine, New Haven, Connecticut 06520, USA
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29
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Ishibe S, Karihaloo A, Ma H, Zhang J, Marlier A, Mitobe M, Togawa A, Schmitt R, Czyczk J, Kashgarian M, Geller DS, Thorgeirsson SS, Cantley LG. Met and the epidermal growth factor receptor act cooperatively to regulate final nephron number and maintain collecting duct morphology. Development 2009; 136:337-45. [PMID: 19103805 DOI: 10.1242/dev.024463] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Ureteric bud (UB) branching during kidney development determines the final number of nephrons. Although hepatocyte growth factor and its receptor Met have been shown to stimulate branching morphogenesis in explanted embryonic kidneys, loss of Met expression is lethal during early embryogenesis without obvious kidney abnormalities. Met(fl/fl);HoxB7-Cre mice, which lack Met expression selectively in the UB, were generated and found to have a reduction in final nephron number. These mice have increased Egf receptor expression in both the embryonic and adult kidney, and exogenous Egf can partially rescue the branching defect seen in kidney explants. Met(fl/fl);HoxB7-Cre;wa-2/wa-2 mice, which lack normal Egfr and Met signaling, exhibit small kidneys with a marked decrease in UB branching at E14.5 as well as a reduction in final glomerular number. These mice developed progressive interstitial fibrosis surrounding collecting ducts with kidney failure and death by 3-4 weeks of age. Thus, in support of previous in vitro findings, Met and the Egf receptor can act cooperatively to regulate UB branching and mediate maintenance of the normal adult collecting duct.
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Affiliation(s)
- Shuta Ishibe
- Section of Nephrology, Yale University School of Medicine, New Haven, CT 06510, USA.
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30
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Bi B, Guo J, Marlier A, Lin SR, Cantley LG. Erythropoietin expands a stromal cell population that can mediate renoprotection. Am J Physiol Renal Physiol 2008; 295:F1017-22. [PMID: 18653480 PMCID: PMC2576137 DOI: 10.1152/ajprenal.90218.2008] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2008] [Accepted: 07/21/2008] [Indexed: 01/13/2023] Open
Abstract
Recent studies have demonstrated that erythropoietin (EPO) receptors are expressed on tubular epithelial cells and that EPO can protect tubular cells from injury in vitro and in vivo. Separate studies have demonstrated that marrow stromal cells (MSCs) exert a renoprotective effect in ischemia-reperfusion and cisplatin tubular injury via the secretion of factors that reduce apoptosis and increase proliferation of tubular epithelial cells. In the present study we demonstrate that MSCs express EPO receptors and that EPO can protect MSCs from serum deprivation-induced cell death and can stimulate MSC proliferation in vitro. The administration of EPO to mice resulted in the expansion of CD45-Flk1-CD105+ MSCs in the bone marrow and in the spleen and mobilized these cells as well as CD45-Flk1+ endothelial progenitor cells into the peripheral circulation. Consistent with previous reports, the administration of EPO diminished the decline in renal function associated with cisplatin administration. This effect was partially reproduced by intraperitoneal injection of cultured EPO-mobilized cells in cisplatin-treated mice. Thus the in vivo expansion and/or activation of these cells may contribute to the renoprotective effects of EPO to protect tubular cells from toxic injury.
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Affiliation(s)
- Baoyuan Bi
- Yale University School of Medicine, 333 Cedar St., PO Box 208029, New Haven, CT 06510, USA
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31
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Abstract
Recovery after acute kidney injury is impaired in the elderly, but mechanistic information regarding why this occurs is limited. In this study, aged mouse kidneys displayed a reduced epithelial proliferative reserve in vivo and in vitro. Microarray analysis identified increased expression of zinc-alpha (2)-glycoprotein (Zag) in aged proximal tubular cells. The addition of recombinant Zag to primary renal epithelial cell cultures decreased proliferation, whereas knockdown of Zag increased proliferation. In vivo, systemic small interference RNA suppressed expression of Zag in the mouse proximal tubule; this increased the rate of epithelial cell proliferation after renal ischemia/reperfusion in aged mice but also increased parenchymal fibrosis. These results demonstrate that increased Zag expression in the aged kidney acts to suppress the proliferative response to injury and introduce Zag as a modifier of the aging phenotype.
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Affiliation(s)
- Roland Schmitt
- Section of Nephrology, Department of Medicine, Yale University, New Haven, Connecticut 06510, USA
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32
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Wei F, Karihaloo A, Yu Z, Marlier A, Seth P, Shibazaki S, Wang T, Sukhatme VP, Somlo S, Cantley LG. Neutrophil gelatinase-associated lipocalin suppresses cyst growth by Pkd1 null cells in vitro and in vivo. Kidney Int 2008; 74:1310-1318. [PMID: 18974761 DOI: 10.1038/ki.2008.395] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Cyst growth in patients with autosomal dominant polycystic kidney disease is thought to be due to increased tubular cell proliferation. One model to explain this altered proliferation suggests that the polycystin proteins PC1 and PC2 localize to apical cilia and serve as an integral part of the flow-sensing pathway thus modulating the proliferative response. We measured proliferation and apoptosis in proximal tubule derived cell lines lacking PC1. These cells showed increased rates of proliferation, a decreased rate of apoptosis, compared to control heterozygous cell lines, and spontaneously formed cysts rather than tubules in an in vitro tubulogenesis assay. Addition of neutrophil gelatinase associated lipocalin (NGAL), a small secreted protein that binds diverse ligands, to the cells lacking PC1 inhibited proliferation and increased apoptosis leading to slower cyst growth in vitro. Sustained over-expression at low level of NGAL by an adenoviral delivery system suppressed cyst enlargement without improving renal function in the Pkd1 mutant mice. Our studies show that renal epithelial cells lacking PC1 have an inherent tendency to hyper-proliferate forming cysts in vitro independent of a flow stimulus. The potential benefit of attenuating cyst growth with NGAL remains to be determined.
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Affiliation(s)
- Feng Wei
- Section of Nephrology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Anil Karihaloo
- Section of Nephrology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Zhiheng Yu
- Section of Nephrology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Arnaud Marlier
- Section of Nephrology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Pankaj Seth
- Section of Nephrology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - Sekiya Shibazaki
- Section of Nephrology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Tong Wang
- Section of Nephrology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Vikas P Sukhatme
- Section of Nephrology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Stefan Somlo
- Section of Nephrology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Lloyd G Cantley
- Section of Nephrology, Yale University School of Medicine, New Haven, Connecticut, USA
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Ishibe S, Haydu JE, Togawa A, Marlier A, Cantley LG. Cell confluence regulates hepatocyte growth factor-stimulated cell morphogenesis in a beta-catenin-dependent manner. Mol Cell Biol 2006; 26:9232-43. [PMID: 17030602 PMCID: PMC1698536 DOI: 10.1128/mcb.01312-06] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Following organ injury, morphogenic epithelial responses can vary depending on local cell density. In the present study, the role of cell confluence in determining the responsiveness of renal epithelial cells to the dedifferentiating morphogenic signals of hepatocyte growth factor (HGF) was examined. Increasing confluence resulted in a greater tendency of cells to organize into epithelial tubes and a significant decrease in migratory responsiveness to HGF. Analysis of downstream signaling revealed that the HGF receptor c-Met was equally activated in confluent and nonconfluent cells following HGF stimulation but that phosphoinositide 3-kinase-dependent activation of Akt and Rac were selectively diminished in confluent cells. In nonconfluent cells treated with HGF, the high level of Akt activation resulted in inhibitory phosphorylation of glycogen synthase kinase 3beta (GSK-3beta) and increased beta-catenin nuclear signaling. In contrast, confluent cells, in which HGF-stimulated Akt activation was diminished, displayed less inhibitory phosphorylation of GSK-3beta and less nuclear signaling by beta-catenin. Overexpression of beta-catenin (SA), which cannot be phosphorylated by GSK-3beta and targeted for ubiquitination, significantly increased migration in fully confluent cells. Thus, cells maintained at high confluence selectively downregulate signaling events such as Rac activation and beta-catenin-dependent transcription that would otherwise promote cell dedifferentiation and migration.
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Affiliation(s)
- Shuta Ishibe
- Section of Nephrology, Yale University School of Medicine, New Haven, CT 06520, USA
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34
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Marlier A, Gilbert T. Expression of retinoic acid-synthesizing and -metabolizing enzymes during nephrogenesis in the rat. Gene Expr Patterns 2006; 5:179-85. [PMID: 15567713 DOI: 10.1016/j.modgep.2004.08.005] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2004] [Revised: 07/30/2004] [Accepted: 08/23/2004] [Indexed: 11/19/2022]
Abstract
Vitamin A signaling through its active form retinoic acid (RA) plays a critical role during kidney development and vitamin A deficiency in the rat induces renal hypoplasia. Here, we describe the distribution of four enzymes of the RA synthetic pathway (aldehyde dehydrogenases ALDH1A1-3 and ALDH8A1) and two enzymes of the degradative pathway (CYP26A1 and CYP26B1) in the developing rat metanephros. We provide evidence that each enzyme displays a cell-type specific expression pattern that changes considerably in the course of renal organogenesis and nephron differentiation. ALDH1A2 expression was restricted to the cortical stroma cell population, whereas ALDH8A1 transcripts were present in emerging renal vesicles. CYP26A1 and CYP26B1 mRNAs were absent during this time. Following nephron induction, ALDH1A1 remained weakly expressed in the UB ends, but was highly expressed in the UB-connected tubule and in all differentiating tubular segments of the developing nephron. ALDH1A2 was strongly expressed in the visceral layer of the developing glomeruli, as well as in cortical collecting tubules. ALDH1A3 mRNAs were found in the developing papilla and ureter. During postnatal nephrogenesis, ALDH1A3 and ALDH8A1 were co-expressed in the ureteric bud ends. CYP26A1 and CYP26B1 were both expressed from E18.5 onwards in S-shaped bodies, in tubular and glomerular anlagen, respectively. On the last day of nephrogenesis in the rat, CYP26B1 expression extended to UB ends. Our results indicate that tubular and glomerular differentiation of the nephron relies upon precise control of the RA metabolic pathway.
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Affiliation(s)
- Arnaud Marlier
- INSERM U574, Hôpital Necker-Enfants Malades, Tour Lavoisier, 6ème étage, 149, rue de Sèvres, 75743 Paris Cedex 15, France
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35
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Zhang SY, Marlier A, Gribouval O, Gilbert T, Heidet L, Antignac C, Gubler MC. In vivo expression of podocyte slit diaphragm-associated proteins in nephrotic patients with NPHS2 mutation. Kidney Int 2004; 66:945-54. [PMID: 15327385 DOI: 10.1111/j.1523-1755.2004.00840.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Mutations in NPHS2, encoding podocin, are a prevalent cause of autosomal-recessive steroid-resistant nephrotic syndrome (SRNS). Podocin is a protein associated with the slit diaphragm that interacts with nephrin and CD2-associated protein (CD2AP) within lipid rafts. METHODS Using renal biopsies of six patients, we analyzed the in vivo consequences of different types of NPHS2 mutations on (1) the podocyte expression and distribution of podocin using in situ hybridization and immunohistology and (2) the distribution of related podocyte proteins and glomerular extracellular matrix components. RESULTS In two patients with homozygous 855_856delAA or 419delG mutation, absence of podocyte labeling with the antibodies against the C-terminal domain contrasted with the normal expression of the N-terminal domain of the protein along the glomerular basement membrane (GBM). In patients carrying compound heterozygous mutations or variants (R168S/467_468insT, R138Q/V180M, and R291W/R229Q), or single heterozygous 976_977insA, podocin transcription appeared unchanged but the distribution of the protein was modified. Podocin was restricted to the podocyte body in the patient carrying the R168S/467_468insT mutation whereas strong immunolabeling of the podocyte body was associated with discrete labeling along the GBM in the three others. In all cases, podocin defect was associated with changes in the distribution of nephrin, CD2AP, and alpha-actinin: the proteins were mainly detected in the podocyte body, with mild expression along the GBM. There were no detectable changes in the distribution of other podocyte proteins or glomerular extracellular matrix components. CONCLUSION NPHS2 mutations result in profound alteration of podocin expression and/or distribution. Secondary changes in the distribution of nephrin, CD2AP, and alpha-actinin are additional evidences for the scaffolding role of podocin in the organization of the slit diaphragm.
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Affiliation(s)
- Shao-Yu Zhang
- INSERM U574, Université René Descartes, Hôpital Necker-Enfants Malades, Paris, France
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Stas A, Meunier A, Schmit JF, Marlier A, Steyer S, Bragard C. The Beet soilborne pomovirus in Belgium and relationship with rhizomania. Meded Rijksuniv Gent Fak Landbouwkd Toegep Biol Wet 2001; 66:39-45. [PMID: 12425019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
Abstract
The objective of this study was to determine the extend of the Beet soilborne pomovirus (BSBV) and the Beet virus Q in sugar beet fields in Belgium. During the 2000 sugar beet growing season, more than 80 fields located in Belgium were investigated for the presence of the Beet necrotic yellow vein benyvirus (BNYVV), the BSBV and Polymyxa betae, the plasmodiophorid vector of both viruses. Fields investigated were identified either using previous recorded data or by visual identification of yellow leaves on sugar beets or root symptoms. Sampling position (longitude-latitude) was recorded using the global positioning system (G.P.S.) with the view to follow-up infested fields in the following years. Three different techniques were used to evidence the aforementioned biological agents: enzyme-linked immunosorbent assay (ELISA), a RT-PCR assay to detect the viruses and direct coloration of Polymyxa betae in plant root tissues, using lactophenol-aniline blue. ELISA allowed the detection of 43 BSBV-infested soils, largely distributed in all Belgian sugar beet growing areas. These results were largely confirmed by RT-PCR using two different primers pairs targeting respectively a 400 bp fragment of the 145K ORF located on virus RNA-1 and a 970 bp fragment of the conserved 3' end of the viral genome. Five other primer's pairs have also been evaluated for BSBV identification. The detection of BSBV-infested soils without BNYVV, as well as BNYVV-infested soils without BSBV allowed the design of a competition assay between both viruses. Among the samples, 21 were selected randomly and tested for the presence of Beet virus Q by RT-PCR. Here also, six fields were detected positive for this virus. Sequence data reveal a clonal population of BSBV isolates in Belgium though a high level of diversity is observed for the coat protein region. Compared to BSBV, BVQ isolates show less diversity at sequence level.
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Affiliation(s)
- A Stas
- Unité de phytopathologie, Faculté des sciences agronomiques, Université catholique de Louvain, Place Croix du Sud, 2bte 3, B-1348 Louvain-la-Neuve
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