1
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Nath KA. Atavistic behavior of macrophages in the injured kidney. Am J Physiol Renal Physiol 2024; 326:F860-F861. [PMID: 38545648 DOI: 10.1152/ajprenal.00085.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Accepted: 03/21/2024] [Indexed: 05/04/2024] Open
Affiliation(s)
- Karl A Nath
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, Minnesota, United States
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2
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Chambers BE, Weaver NE, Lara CM, Nguyen TK, Wingert RA. (Zebra)fishing for nephrogenesis genes. Tissue Barriers 2024; 12:2219605. [PMID: 37254823 PMCID: PMC11042071 DOI: 10.1080/21688370.2023.2219605] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 05/14/2023] [Indexed: 06/01/2023] Open
Abstract
Kidney disease is a devastating condition affecting millions of people worldwide, where over 100,000 patients in the United States alone remain waiting for a lifesaving organ transplant. Concomitant with a surge in personalized medicine, single-gene mutations, and polygenic risk alleles have been brought to the forefront as core causes of a spectrum of renal disorders. With the increasing prevalence of kidney disease, it is imperative to make substantial strides in the field of kidney genetics. Nephrons, the core functional units of the kidney, are epithelial tubules that act as gatekeepers of body homeostasis by absorbing and secreting ions, water, and small molecules to filter the blood. Each nephron contains a series of proximal and distal segments with explicit metabolic functions. The embryonic zebrafish provides an ideal platform to systematically dissect the genetic cues governing kidney development. Here, we review the use of zebrafish to discover nephrogenesis genes.
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Affiliation(s)
- Brooke E. Chambers
- Department of Biological Sciences, Center for Stem Cells and Regenerative Medicine, Center for Zebrafish Research, Boler-Parseghian Center for Rare and Neglected Diseases, Warren Center for Drug Discovery, University of Notre Dame, Notre Dame, Indiana (IN), USA
| | - Nicole E. Weaver
- Department of Biological Sciences, Center for Stem Cells and Regenerative Medicine, Center for Zebrafish Research, Boler-Parseghian Center for Rare and Neglected Diseases, Warren Center for Drug Discovery, University of Notre Dame, Notre Dame, Indiana (IN), USA
| | - Caroline M. Lara
- Department of Biological Sciences, Center for Stem Cells and Regenerative Medicine, Center for Zebrafish Research, Boler-Parseghian Center for Rare and Neglected Diseases, Warren Center for Drug Discovery, University of Notre Dame, Notre Dame, Indiana (IN), USA
| | - Thanh Khoa Nguyen
- Department of Biological Sciences, Center for Stem Cells and Regenerative Medicine, Center for Zebrafish Research, Boler-Parseghian Center for Rare and Neglected Diseases, Warren Center for Drug Discovery, University of Notre Dame, Notre Dame, Indiana (IN), USA
| | - Rebecca A. Wingert
- Department of Biological Sciences, Center for Stem Cells and Regenerative Medicine, Center for Zebrafish Research, Boler-Parseghian Center for Rare and Neglected Diseases, Warren Center for Drug Discovery, University of Notre Dame, Notre Dame, Indiana (IN), USA
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3
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Yamamura Y, Iwata Y, Furuichi K, Kato T, Yamamoto N, Horikoshi K, Ogura H, Sato K, Oshima M, Nakagawa S, Miyagawa T, Kitajima S, Toyama T, Hara A, Sakai N, Shimizu M, Horike S, Daikoku T, Nishinakamura R, Wada T. Kif26b contributes to the progression of interstitial fibrosis via migration and myofibroblast differentiation in renal fibroblast. FASEB J 2022; 36:e22606. [PMID: 36250931 DOI: 10.1096/fj.202200355r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 08/21/2022] [Accepted: 09/29/2022] [Indexed: 11/11/2022]
Abstract
Kinesin family member 26b (Kif26b) is essential for kidney development, and its deletion in mice leads to kidney agenesis. However, the roles of this gene in adult settings remain elusive. Thus, this study aims to investigate the role of Kif26b in the progression of renal fibrosis. A renal fibrosis model with adenine administration using Kif26b heterozygous mice and wild-type mice was established. Renal fibrosis and the underlying mechanism were investigated. The underlying pathways and functions of Kif26b were evaluated in an in vitro model using primary renal fibroblasts. Kif26b heterozygous mice were protected from renal fibrosis with adenine administration. Renal expressions of connective tissue growth factor (CTGF) and myofibroblast accumulation were reduced in Kif26b heterozygous mice. The expression of nonmuscle myosin heavy chain II (NMHCII), which binds to the C-terminus of Kif26b protein, was also suppressed in Kif26b heterozygous mice. The in vitro study revealed reduced expressions of CTGF, α-smooth muscle actin, and myosin heavy chain 9 (Myh9) via transfection with siRNAs targeting Kif26b in renal fibroblasts (RFB). RFBs, which were transfected by the expression vector of Kif26b, demonstrated higher expressions of these genes than non-transfected cells. Finally, Kif26b suppression and NMHCII blockage led to reduced abilities of migration and collagen gel contraction in renal fibroblasts. Taken together, Kif26b contributes to the progression of interstitial fibrosis via migration and myofibroblast differentiation through Myh9 in the renal fibrosis model. Blockage of this pathway at appropriate timing might be a therapeutic approach for renal fibrosis.
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Affiliation(s)
- Yuta Yamamura
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Yasunori Iwata
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan.,Division of Infection Control, Kanazawa University Hospital, Kanazawa, Japan
| | - Kengo Furuichi
- Department of Nephrology, School of Medicine, Kanazawa Medical University, Uchinada, Japan
| | - Takahiro Kato
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Naoki Yamamoto
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Keisuke Horikoshi
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Hisayuki Ogura
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Koichi Sato
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Megumi Oshima
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Shiori Nakagawa
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Taro Miyagawa
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Shinji Kitajima
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan.,Division of Blood Purification, Kanazawa University Hospital, Kahoku, Japan
| | - Tadashi Toyama
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Akinori Hara
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Norihiko Sakai
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan.,Division of Blood Purification, Kanazawa University Hospital, Kahoku, Japan
| | - Miho Shimizu
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Shinichi Horike
- Research Center for Experimental Modeling of Human Disease, Kanazawa University, Kanazawa, Japan
| | - Takiko Daikoku
- Research Center for Experimental Modeling of Human Disease, Kanazawa University, Kanazawa, Japan
| | - Ryuichi Nishinakamura
- Department of Kidney Development, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto, Japan
| | - Takashi Wada
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
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4
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Naved BA, Bonventre JV, Hubbell JA, Hukriede NA, Humphreys BD, Kesselman C, Valerius MT, McMahon AP, Shankland SJ, Wertheim JA, White MJV, de Caestecker MP, Drummond IA. Kidney repair and regeneration: perspectives of the NIDDK (Re)Building a Kidney consortium. Kidney Int 2022; 101:845-853. [PMID: 35276204 PMCID: PMC9045003 DOI: 10.1016/j.kint.2022.02.023] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 01/17/2022] [Accepted: 02/16/2022] [Indexed: 12/14/2022]
Abstract
Acute kidney injury impacts ∼13.3 million individuals and causes ∼1.7 million deaths per year globally. Numerous injury pathways contribute to acute kidney injury, including cell cycle arrest, senescence, inflammation, mitochondrial dysfunction, and endothelial injury and dysfunction, and can lead to chronic inflammation and fibrosis. However, factors enabling productive repair versus nonproductive, persistent injury states remain less understood. The (Re)Building a Kidney (RBK) consortium is a National Institute of Diabetes and Digestive and Kidney Diseases consortium focused on both endogenous kidney repair mechanisms and the generation of new kidney tissue. This short review provides an update on RBK studies of endogenous nephron repair, addressing the following questions: (i) What is productive nephron repair? (ii) What are the cellular sources and drivers of repair? and (iii) How do RBK studies promote development of therapeutics? Also, we provide a guide to RBK's open access data hub for accessing, downloading, and further analyzing data sets.
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Affiliation(s)
- Bilal A Naved
- Medical Science Training Program, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Joseph V Bonventre
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Jeffrey A Hubbell
- Pritzker School of Molecular Engineering, The University of Chicago, Chicago, Illinois, USA
| | - Neil A Hukriede
- Department of Developmental Biology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Benjamin D Humphreys
- Department of Medicine, Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA
| | - Carl Kesselman
- Informatics Systems Research Division, Information Sciences Institute, University of Southern California, Los Angeles, California, USA
| | - M Todd Valerius
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Andrew P McMahon
- Department of Stem Cell Biology and Regenerative Medicine, W.M. Keck School of Medicine of the University of Southern California, Los Angeles, California, USA
| | - Stuart J Shankland
- Division of Nephrology, University of Washington School of Medicine, Seattle, Washington, USA
| | - Jason A Wertheim
- Department of Biomedical Engineering, College of Medicine, The University of Arizona, Tucson, Arizona, USA
| | - Michael J V White
- Pritzker School of Molecular Engineering, The University of Chicago, Chicago, Illinois, USA
| | - Mark P de Caestecker
- Division of Nephrology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Iain A Drummond
- Davis Center for Regenerative Biology and Aging, Mount Desert Island Biological Laboratory, Bar Harbor, Maine, USA.
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5
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Sako K, Furuichi K, Makiishi S, Yamamura Y, Okumura T, Le T, Kitajima S, Toyama T, Hara A, Iwata Y, Sakai N, Shimizu M, Niimura F, Matsusaka T, Kaneko S, Wada T. Cyclin-dependent kinase 4-related tubular epithelial cell proliferation is regulated by Paired box gene 2 in kidney ischemia-reperfusion injury. Kidney Int 2022; 102:45-57. [PMID: 35483529 DOI: 10.1016/j.kint.2022.03.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 02/08/2022] [Accepted: 03/09/2022] [Indexed: 12/20/2022]
Abstract
Paired box 2 (Pax2) is a transcription factor essential for kidney development and is reactivated in proximal tubular epithelial cells (PTECs) during recovery from kidney injury. However, the role of Pax2 in this process is still unknown. Here the role of Pax2 reactivation during injury was examined in the proliferation of PTECs using an ischemia-reperfusion injury (IRI) mouse model. Kidney proximal tubule-specific Pax2 conditional knockout mice were generated by mating kidney androgen-regulated protein-Cre and Pax2 flox mice. The degree of cell proliferation and fibrosis was assessed and a Pax2 inhibitor (EG1) was used to evaluate the role of Pax2 in the hypoxic condition of cultured PTECs (O2 5%, 24 hours). The number of Pax2-positive cells and Pax2 mRNA increased after IRI. Sirius red staining indicated that the area of interstitial fibrosis was significantly larger in knockout mice 14 days after IRI. The number of Ki-67-positive cells (an index of proliferation) was significantly lower in knockout than in wild-type mice after IRI, whereas the number of TUNEL-positive cells (an index of apoptotic cells) was significantly higher in knockout mice four days after IRI. Expression analyses of cell cycle-related genes showed that cyclin-dependent kinase 4 (CDK4) was significantly less expressed in the Pax2 knockout mice. In vitro data showed that the increase in CDK4 mRNA and protein expression induced by hypoxia was attenuated by EG1. Thus, Pax2 reactivation may be involved in PTEC proliferation by activating CDK4, thereby limiting kidney fibrosis.
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Affiliation(s)
- Keisuke Sako
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Kengo Furuichi
- Department of Nephrology, School of Medicine, Kanazawa Medical University, Uchinada, Ishikawa, Japan
| | - Shohei Makiishi
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Yuta Yamamura
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Toshiya Okumura
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Thu Le
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Shinji Kitajima
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Tadashi Toyama
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Akinori Hara
- Department of Environmental and Preventive Medicine, Faculty of Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Yasunori Iwata
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan; Division of Infection Control, Kanazawa University, Kanazawa, Japan
| | - Norihiko Sakai
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Miho Shimizu
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Fumio Niimura
- Department of Pediatrics, School of Medicine, Tokai University, Isehara, Japan
| | - Taiji Matsusaka
- Department of Basic Medicine, School of Medicine, Tokai University, Isehara, Japan; Institute of Medical Science, Tokai University, Isehara, Japan
| | - Shuichi Kaneko
- Department of System Biology, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Takashi Wada
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan.
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6
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Haddad G, Kölling M, Wegmann UA, Dettling A, Seeger H, Schmitt R, Soerensen-Zender I, Haller H, Kistler AD, Dueck A, Engelhardt S, Thum T, Mueller TF, Wüthrich RP, Lorenzen JM. Renal AAV2-Mediated Overexpression of Long Non-Coding RNA H19 Attenuates Ischemic Acute Kidney Injury Through Sponging of microRNA-30a-5p. J Am Soc Nephrol 2021; 32:323-341. [PMID: 33478972 PMCID: PMC8054899 DOI: 10.1681/asn.2020060775] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 10/28/2020] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Renal ischemia-reperfusion (I/R) injury is a major cause of AKI. Noncoding RNAs are intricately involved in the pathophysiology of this form of AKI. Transcription of hypoxia-induced, long noncoding RNA H19, which shows high embryonic expression and is silenced in adults, is upregulated in renal I/R injury. METHODS Lentivirus-mediated overexpression, as well as antisense oligonucleotide-based silencing, modulated H19 in vitro. In vivo analyses used constitutive H19 knockout mice. In addition, renal vein injection of adeno-associated virus 2 (AAV2) carrying H19 caused overexpression in the kidney. Expression of H19 in kidney transplant patients with I/R injury was investigated. RESULTS H19 is upregulated in kidney biopsies of patients with AKI, in murine ischemic kidney tissue, and in cultured and ex vivo sorted hypoxic endothelial cells (ECs) and tubular epithelial cells (TECs). Transcription factors hypoxia-inducible factor 1-α, LHX8, and SPI1 activate H19 in ECs and TECs. H19 overexpression promotes angiogenesis in vitro and in vivo. In vivo, transient AAV2-mediated H19 overexpression significantly improved kidney function, reduced apoptosis, and reduced inflammation, as well as preserving capillary density and tubular epithelial integrity. Sponging of miR-30a-5p mediated the effects, which, in turn, led to target regulation of Dll4, ATG5, and Snai1. CONCLUSIONS H19 overexpression confers protection against renal injury by stimulating proangiogenic signaling. H19 overexpression may be a promising future therapeutic option in the treatment of patients with ischemic AKI.
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Affiliation(s)
- George Haddad
- Department of Nephrology, University Hospital Zürich, Zurich, Switzerland
| | - Malte Kölling
- Department of Nephrology, University Hospital Zürich, Zurich, Switzerland
| | - Urs A. Wegmann
- Department of Nephrology, University Hospital Zürich, Zurich, Switzerland
| | - Angela Dettling
- Department of Nephrology, Hannover Medical School, Hannover, Germany
| | - Harald Seeger
- Department of Nephrology, University Hospital Zürich, Zurich, Switzerland
| | - Roland Schmitt
- Department of Nephrology, Hannover Medical School, Hannover, Germany
| | | | - Hermann Haller
- Department of Nephrology, Hannover Medical School, Hannover, Germany
| | - Andreas D. Kistler
- Department of Internal Medicine, Cantonal Hospital Frauenfeld, Frauenfeld, Switzerland
| | - Anne Dueck
- Institute of Pharmacology and Toxicology, Technical University of Munich, Munich, Germany,German Center for Cardiovascular Research, partner site Munich Heart Alliance, Munich, Germany
| | - Stefan Engelhardt
- Institute of Pharmacology and Toxicology, Technical University of Munich, Munich, Germany,German Center for Cardiovascular Research, partner site Munich Heart Alliance, Munich, Germany
| | - Thomas Thum
- Institute of Molecular and Translational Therapeutic Strategies, Hannover Medical School, Hannover, Germany,Fraunhofer Institute for Toxicology and Experimental Medicine, Hannover, Germany
| | - Thomas F. Mueller
- Department of Nephrology, University Hospital Zürich, Zurich, Switzerland
| | - Rudolf P. Wüthrich
- Department of Nephrology, University Hospital Zürich, Zurich, Switzerland
| | - Johan M. Lorenzen
- Department of Nephrology, University Hospital Zürich, Zurich, Switzerland
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7
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Kamei CN, Gallegos TF, Liu Y, Hukriede N, Drummond IA. Wnt signaling mediates new nephron formation during zebrafish kidney regeneration. Development 2019; 146:dev.168294. [PMID: 31036548 PMCID: PMC6503981 DOI: 10.1242/dev.168294] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 04/05/2019] [Indexed: 12/24/2022]
Abstract
Zebrafish kidneys use resident kidney stem cells to replace damaged tubules with new nephrons: the filtration units of the kidney. What stimulates kidney progenitor cells to form new nephrons is not known. Here, we show that wnt9a and wnt9b are induced in the injured kidney at sites where frizzled9b- and lef1-expressing progenitor cells form new nephrons. New nephron aggregates are patterned by Wnt signaling, with high canonical Wnt-signaling cells forming a single cell thick rosette that demarcates: domains of cell proliferation in the elongating nephron; and tubule fusion where the new nephron plumbs into the distal tubule and establishes blood filtrate drainage. Pharmacological blockade of canonical Wnt signaling inhibited new nephron formation after injury by inhibiting cell proliferation, and resulted in loss of polarized rosette structures in the aggregates. Mutation in frizzled9b reduced total kidney nephron number, caused defects in tubule morphology and reduced regeneration of new nephrons after injury. Our results demonstrate an essential role for Wnt/frizzled signaling in adult zebrafish kidney development and regeneration, highlighting conserved mechanisms underlying both mammalian kidney development and kidney stem cell-directed neonephrogenesis in zebrafish. Summary: Adult zebrafish kidneys induce Wnt signaling to generate new nephrons from resident kidney progenitor cells, highlighting how embryonic morphogens are reactivated in adult organs to drive regeneration.
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Affiliation(s)
- Caramai N Kamei
- Massachusetts General Hospital, Department of Medicine, Nephrology Division, 149 13th Street, Charlestown, MA 02129, USA
| | - Thomas F Gallegos
- Massachusetts General Hospital, Department of Medicine, Nephrology Division, 149 13th Street, Charlestown, MA 02129, USA
| | - Yan Liu
- Massachusetts General Hospital, Department of Medicine, Nephrology Division, 149 13th Street, Charlestown, MA 02129, USA
| | - Neil Hukriede
- Department of Developmental Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15260, USA
| | - Iain A Drummond
- Massachusetts General Hospital, Department of Medicine, Nephrology Division, 149 13th Street, Charlestown, MA 02129, USA .,Harvard Medical School Department of Genetics, Boston, MA 02115, USA
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8
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Brilli Skvarca L, Han HI, Espiritu EB, Missinato MA, Rochon ER, McDaniels MD, Bais AS, Roman BL, Waxman JS, Watkins SC, Davidson AJ, Tsang M, Hukriede NA. Enhancing regeneration after acute kidney injury by promoting cellular dedifferentiation in zebrafish. Dis Model Mech 2019; 12:dmm.037390. [PMID: 30890583 PMCID: PMC6505474 DOI: 10.1242/dmm.037390] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Accepted: 03/11/2019] [Indexed: 12/12/2022] Open
Abstract
Acute kidney injury (AKI) is a serious disorder for which there are limited treatment options. Following injury, native nephrons display limited regenerative capabilities, relying on the dedifferentiation and proliferation of renal tubular epithelial cells (RTECs) that survive the insult. Previously, we identified 4-(phenylthio)butanoic acid (PTBA), a histone deacetylase inhibitor (HDI), as an enhancer of renal recovery, and showed that PTBA treatment increased RTEC proliferation and reduced renal fibrosis. Here, we investigated the regenerative mechanisms of PTBA in zebrafish models of larval renal injury and adult cardiac injury. With respect to renal injury, we showed that delivery of PTBA using an esterified prodrug (UPHD25) increases the reactivation of the renal progenitor gene Pax2a, enhances dedifferentiation of RTECs, reduces Kidney injury molecule-1 (Kim-1) expression, and lowers the number of infiltrating macrophages. Further, we found that the effects of PTBA on RTEC proliferation depend upon retinoic acid signaling and demonstrate that the therapeutic properties of PTBA are not restricted to the kidney but also increase cardiomyocyte proliferation and decrease fibrosis following cardiac injury in adult zebrafish. These studies provide key mechanistic insights into how PTBA enhances tissue repair in models of acute injury and lay the groundwork for translating this novel HDI into the clinic. This article has an associated First Person interview with the joint first authors of the paper. Summary: Mortality associated with AKI is in part due to limited treatments available to ameliorate injury. The authors identify a compound that accelerates AKI recovery and promotes cellular dedifferentiation.
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Affiliation(s)
- Lauren Brilli Skvarca
- Department of Developmental Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA.,Department of Pathology, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Hwa In Han
- Department of Developmental Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Eugenel B Espiritu
- Department of Developmental Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Maria A Missinato
- Department of Developmental Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA.,Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92037, USA
| | - Elizabeth R Rochon
- Pittsburgh Heart, Lung, and Blood Vascular Medicine Institute, Department of Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Michael D McDaniels
- Department of Developmental Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Abha S Bais
- Department of Developmental Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Beth L Roman
- Human Genetics, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Joshua S Waxman
- Heart Institute, Molecular Cardiovascular Biology Division, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Simon C Watkins
- Department of Cell Biology and Center for Biological Imaging, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Alan J Davidson
- Molecular Medicine and Pathology, University of Auckland, Auckland, New Zealand
| | - Michael Tsang
- Department of Developmental Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Neil A Hukriede
- Department of Developmental Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA .,Center for Critical Care Nephrology, University of Pittsburgh, Pittsburgh, PA 15213, USA
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9
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Han HI, Skvarca LB, Espiritu EB, Davidson AJ, Hukriede NA. The role of macrophages during acute kidney injury: destruction and repair. Pediatr Nephrol 2019; 34:561-569. [PMID: 29383444 PMCID: PMC6066473 DOI: 10.1007/s00467-017-3883-1] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2017] [Accepted: 12/29/2017] [Indexed: 12/21/2022]
Abstract
Acute kidney injury (AKI) is defined by a rapid decline in renal function. Regardless of the initial cause of injury, the influx of immune cells is a common theme during AKI. While an inflammatory response is critical for the initial control of injury, a prolonged response can negatively affect tissue repair. In this review, we focus on the role of macrophages, from early inflammation to resolution, during AKI. These cells serve as the innate defense system by phagocytosing cellular debris and pathogenic molecules and bridge communication with the adaptive immune system by acting as antigen-presenting cells and secreting cytokines. While many immune cells function to initiate inflammation, macrophages play a complex role throughout AKI. This complexity is driven by their functional plasticity: the ability to polarize from a "pro-inflammatory" phenotype to a "pro-reparative" phenotype. Importantly, experimental and translational studies indicate that macrophage polarization opens the possibility to generate novel therapeutics to promote repair during AKI. A thorough understanding of the biological roles these phagocytes play during both injury and repair is necessary to understand the limitations while furthering the therapeutic application.
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Affiliation(s)
- Hwa I. Han
- Department of Developmental Biology, University of Pittsburgh, Pittsburgh, PA, United States of America
| | - Lauren B. Skvarca
- Department of Developmental Biology, University of Pittsburgh, Pittsburgh, PA, United States of America
| | - Eugenel B. Espiritu
- Department of Developmental Biology, University of Pittsburgh, Pittsburgh, PA, United States of America
| | - Alan J. Davidson
- Department of Molecular Medicine and Pathology, School of Medical Sciences, University of Auckland, Auckland, New Zealand
| | - Neil A. Hukriede
- Department of Developmental Biology, University of Pittsburgh, Pittsburgh, PA, United States of America,Center for Critical Care Nephrology, University of Pittsburgh, Pittsburgh, PA, United States of America,Correspondence: Dr. Neil A. Hukriede, Department of Developmental Biology, University of Pittsburgh School of Medicine, 3501 5th Ave., 5061 BST3, Pittsburgh, PA 15213. Phone: 412-648-9918;
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10
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Acellular Mouse Kidney ECM can be Used as a Three-Dimensional Substrate to Test the Differentiation Potential of Embryonic Stem Cell Derived Renal Progenitors. Stem Cell Rev Rep 2018; 13:513-531. [PMID: 28239758 PMCID: PMC5493730 DOI: 10.1007/s12015-016-9712-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The development of strategies for tissue regeneration and bio-artificial organ development is based on our understanding of embryogenesis. Differentiation protocols attempt to recapitulate the signaling modalities of gastrulation and organogenesis, coupled with cell selection regimens to isolate the cells of choice. This strategy is impeded by the lack of optimal in vitro culture systems since traditional culture systems do not allow for the three-dimensional interaction between cells and the extracellular matrix. While artificial three-dimensional scaffolds are available, using the natural extracellular matrix scaffold is advantageous because it has a distinct architecture that is difficult to replicate. The adult extracellular matrix is predicted to mediate signaling related to tissue repair not embryogenesis but existing similarities between the two argues that the extracellular matrix will influence the differentiation of stem and progenitor cells. Previous studies using undifferentiated embryonic stem cells grown directly on acellular kidney ECM demonstrated that the acellular kidney supported cell growth but limited differentiation occurred. Using mouse kidney extracellular matrix and mouse embryonic stem cells we report that the extracellular matrix can support the development of kidney structures if the stem cells are first differentiated to kidney progenitor cells before being applied to the acellular organ.
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11
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Yu Y, Cui H, Chen C, Wen G, Xu J, Zheng B, Zhang J, Wang C, Chai Y, Mei J. Hypoxia-inducible Factor-1α directs renal regeneration induced by decellularized scaffolds. Biomaterials 2018; 165:48-55. [PMID: 29501969 DOI: 10.1016/j.biomaterials.2018.02.045] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 02/19/2018] [Accepted: 02/22/2018] [Indexed: 01/09/2023]
Abstract
Although mammalian kidney regeneration has been reported to occur throughout life, mature kidneys in mammals are not thought to regenerate sufficiently, particularly glomeruli. In our previous work, we found that renal regeneration could be enhanced by decellularized renal scaffolds after partial nephrectomy. In this study, we verified that the enhanced renal regeneration mediated by decellularized scaffolds could be attributed to regenerated glomeruli, which were counted both indirectly and directly under a microscope. Using the isobaric tag for relative and absolute quantitation, we performed proteomics analysis and found that hypoxia-inducible factor (HIF)-1α may be a key factor involved in induced renal regeneration. Dimethyloxyallyl glycine (DMOG), a propyl hydroxylase inhibitor, was applied to stabilize constitutive expression of HIF-1α protein, and small interfering RNA was used to inhibit gene expression. Administration of DMOG to decellularized scaffold-grafted rats improved the induced renal regeneration, whereas siHif1α transfection decreased the regeneration capacity. These findings revealed the critical role of HIF-1α in renal regeneration and provided important insights into our understanding of kidney development and the treatment of various kidney diseases.
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Affiliation(s)
- Yaling Yu
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China; Anatomy Department, Wenzhou Medical University, Wenzhou, 325035, China
| | - Haomin Cui
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Chuan Chen
- Department of Hand Surgery, Ningbo No.6 Hospital, Ningbo, 315040, China
| | - Gen Wen
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Jia Xu
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Binbin Zheng
- Anatomy Department, Wenzhou Medical University, Wenzhou, 325035, China
| | - Jianse Zhang
- Anatomy Department, Wenzhou Medical University, Wenzhou, 325035, China
| | - Chunyang Wang
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Yimin Chai
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China.
| | - Jin Mei
- Anatomy Department, Wenzhou Medical University, Wenzhou, 325035, China.
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12
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Zhang Y, Li Q, Liu D, Huang Q, Cai G, Cui S, Sun X, Chen X. GDF11 improves tubular regeneration after acute kidney injury in elderly mice. Sci Rep 2016; 6:34624. [PMID: 27703192 PMCID: PMC5050408 DOI: 10.1038/srep34624] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Accepted: 09/09/2016] [Indexed: 01/27/2023] Open
Abstract
The GDF11 expression pattern and its effect on organ regeneration after acute injury in the elderly population are highly controversial topics. In our study, GDF11/8 expression increased after kidney ischemia–reperfusion injury (IRI), and the relatively lower level of GDF11/8 in the kidneys of aged mice was associated with a loss of proliferative capacity and a decline in renal repair, compared to young mice. In vivo, GDF11 supplementation in aged mice increased vimentin and Pax2 expression in the kidneys as well as the percentage of 5-ethynyl-2′-deoxyuridine (EdU)-positive proximal tubular epithelial cells. GDF11 improved the renal repair, recovery of renal function, and survival of elderly mice at 72 h after IRI. Moreover, the addition of recombinant GDF11 to primary renal epithelial cells increased proliferation, migration, and dedifferentiation by upregulating the ERK1/2 pathway in vitro. Our study indicates that GDF11/8 in the kidney decreases with age and that GDF11 can increase tubular cell dedifferentiation and proliferation as well as improve tubular regeneration after acute kidney injury (AKI) in old mice.
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Affiliation(s)
- Ying Zhang
- Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, 100853, China.,Medical College, Nankai University, Tianjin, 300071, China
| | - Qinggang Li
- Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, 100853, China
| | - Dong Liu
- Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, 100853, China.,Department of Nephrology, Chinese PLA Air Force General Hospital, Beijing, 100142, China
| | - Qi Huang
- Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, 100853, China
| | - Guangyan Cai
- Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, 100853, China
| | - Shaoyuan Cui
- Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, 100853, China
| | - Xuefeng Sun
- Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, 100853, China
| | - Xiangmei Chen
- Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, 100853, China
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13
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Involvement of the Hippo pathway in regeneration and fibrogenesis after ischaemic acute kidney injury: YAP is the key effector. Clin Sci (Lond) 2015; 130:349-63. [PMID: 26574480 PMCID: PMC4727597 DOI: 10.1042/cs20150385] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Accepted: 11/16/2015] [Indexed: 01/12/2023]
Abstract
The Hippo pathway plays a stage-specific role in regeneration and fibrogenesis after ischaemia/reperfusion-induced acute kidney injury. The proper modulation of this pathway might be the key point of transition from acute kidney injury to chronic kidney disease. Renal tubule cells can recover after they undergo AKI (acute kidney injury). An incomplete repair of renal tubules can result in progressive fibrotic CKD (chronic kidney disease). Studies have revealed the relationship between tubular epithelial cells and kidney fibrogenesis. However, the underlying mechanism remains unclear. Hippo pathway components were evaluated in complete/incomplete repair of I/R (ischaemia/reperfusion) AKI rat models, HK-2 cells and AKI human renal biopsy samples. We found that the expression levels of the Hippo pathway components changed dynamically during kidney regeneration and fibrogenesis in rat models of I/R-induced AKI and human renal biopsy samples. The transcription cofactor YAP (Yes-associated protein) might be a key effector of renal regeneration and fibrogenesis. Our results showed further that YAP might elicit both beneficial and detrimental effects on I/R AKI. After I/R injury occurred, YAP could promote the repair of the injured epithelia. The constant YAP increase and activation might be related to interstitial fibrosis and abnormal renal tubule differentiation. These results indicate that the proper modulation of the Hippo pathway, specifically the transcription cofactor YAP, during repair might be a potent therapeutic target in AKI–CKD transition after I/R injury.
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14
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Kamei CN, Liu Y, Drummond IA. Kidney Regeneration in Adult Zebrafish by Gentamicin Induced Injury. J Vis Exp 2015:e51912. [PMID: 26275011 DOI: 10.3791/51912] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
The kidney is essential for fluid homeostasis, blood pressure regulation and filtration of waste from the body. The fundamental unit of kidney function is the nephron. Mammals are able to repair existing nephrons after injury, but lose the ability to form new nephrons soon after birth. In contrast to mammals, adult fish produce new nephrons (neonephrogenesis) throughout their lives in response to growth requirements or injury. Recently, lhx1a has been shown to mark nephron progenitor cells in the adult zebrafish kidney, however mechanisms controlling the formation of new nephrons after injury remain unknown. Here we show our method for robust and reproducible injury in the adult zebrafish kidney by intraperitoneal (i.p.) injection of gentamicin, which uses a noninvasive visual screening process to select for fish with strong but nonlethal injury. Using this method, we can determine optimal gentamicin dosages for injury and go on to demonstrate the effect of higher temperatures on kidney regeneration in zebrafish.
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Affiliation(s)
- Caramai N Kamei
- Nephrology Division, Department of Medicine, Massachusetts General Hospital
| | - Yan Liu
- Nephrology Division, Department of Medicine, Massachusetts General Hospital; Basic Sciences Division, Fred Hutchinson Cancer Research Center
| | - Iain A Drummond
- Nephrology Division, Department of Medicine, Massachusetts General Hospital; Department of Genetics, Harvard Medical School;
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Gupta AK, Jadhav SH, Tripathy NK, Nityanand S. Fetal kidney stem cells ameliorate cisplatin induced acute renal failure and promote renal angiogenesis. World J Stem Cells 2015; 7:776-788. [PMID: 26029348 PMCID: PMC4444617 DOI: 10.4252/wjsc.v7.i4.776] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Revised: 02/05/2015] [Accepted: 03/09/2015] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate whether fetal kidney stem cells (fKSC) ameliorate cisplatin induced acute renal failure (ARF) in rats and promote renal angiogenesis.
METHODS: The fKSC were isolated from rat fetuses of gestation day 16 and expanded in vitro up to 3rd passage. They were characterized for the expression of mesenchymal and renal progenitor markers by flow cytometry and immunocytochemistry, respectively. The in vitro differentiation of fKSC towards epithelial lineage was evaluated by the treatment with specific induction medium and their angiogenic potential by matrigel induced tube formation assay. To study the effect of fKSC in ARF, fKSC labeled with PKH26 were infused in rats with cisplatin induced ARF and, the blood and renal tissues of the rats were collected at different time points. Blood biochemical parameters were studied to evaluate renal function. Renal tissues were evaluated for renal architecture, renal cell proliferation and angiogenesis by immunohistochemistry, renal cell apoptosis by terminal deoxynucleotidyl transferase nick-end labeling assay and early expression of angiogenic molecules viz. vascular endothelial growth factor (VEGF), hypoxia-inducible factor (HIF)-1α and endothelial nitric oxide synthase (eNOS) by western blot.
RESULTS: The fKSC expressed mesenchymal markers viz. CD29, CD44, CD73, CD90 and CD105 as well as renal progenitor markers viz. Wt1, Pax2 and Six2. They exhibited a potential to form CD31 and Von Willebrand factor expressing capillary-like structures and could be differentiated into cytokeratin (CK)18 and CK19 positive epithelial cells. Administration of fKSC in rats with ARF as compared to administration of saline alone, resulted in a significant improvement in renal function and histology on day 3 (2.33 ± 0.33 vs 3.50 ± 0.34, P < 0.05) and on day 7 (0.83 ± 0.16 vs 2.00 ± 0.25, P < 0.05). The infused PKH26 labeled fKSC were observed to engraft in damaged renal tubules and showed increased proliferation and reduced apoptosis (P < 0.05) of renal cells. The kidneys of fKSC as compared to saline treated rats had a higher capillary density on day 3 [13.30 ± 1.54 vs 7.10 ± 1.29, capillaries/high-power fields (HPF), P < 0.05], and on day 7 (21.10 ± 1.46 vs 15.00 ± 1.30, capillaries/HPF, P < 0.05). In addition, kidneys of fKSC treated rats had an up-regulation of angiogenic proteins hypoxia-inducible factor-1α, VEGF and eNOS on day 3 (P < 0.05).
CONCLUSION: Our study shows that fKSC ameliorate cisplatin induced ARF in rats and promote renal angiogenesis, which may be an important therapeutic mechanism of these stem cells in the disease.
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16
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Abstract
A number of genes involved in kidney development are reactivated in the adult after acute kidney injury (AKI). This has led to the belief that tissue repair mechanisms recapitulate pathways involved in embryonic development after AKI. We will discuss evidence to support this hypothesis by comparing the mechanisms of development with common pathways known to regulate post-AKI repair, or that we identified as cell-specific candidates based on public datasets from recent AKI translational profiling studies. We will argue that while many of these developmental pathways are reactivated after AKI, this is not associated with general cellular reprogramming to an embryonic state. We will show that reactivation of these developmental genes is often associated with expression in cells that are not normally involved in mediating parallel responses in the embryo, and that depending on the cellular context, these responses can have beneficial or detrimental effects on injury and repair after AKI.
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17
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Taguchi A, Nishinakamura R. Nephron reconstitution from pluripotent stem cells. Kidney Int 2014; 87:894-900. [PMID: 25469851 DOI: 10.1038/ki.2014.358] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Revised: 05/21/2014] [Accepted: 05/22/2014] [Indexed: 12/17/2022]
Abstract
It has been a challenge in developmental biology and regenerative medicine to generate nephron progenitors that reconstitute the three-dimensional (3D) nephron structure in vitro. Many studies have tried to induce nephron progenitors from pluripotent stem cells by mimicking the developmental processes in vivo. However, the current developmental model does not precisely address the spatiotemporal origin of nephron progenitors, hampering our understanding of cell fate decisions in the kidney. Here, we present a revised model of early-stage kidney specification, suggesting distinct origins of the two major kidney components: the ureteric bud and metanephric mesenchyme. This model enables the induction of metanephric nephron progenitors from both mouse and human pluripotent stem cells. The induced cells self-organize in the presence of Wnt signaling and reconstitute 3D nephron structures including both nephric tubules with a clear lumina and glomeruli with podocytes. The engrafted kidney tissue develops vascularized glomeruli and nephric tubules, but it does not produce urine, suggesting the requirement for further maturation. Nevertheless, the generation of nephron components from human-induced pluripotent stem cells will be useful for future application in regenerative therapy and modeling of congenital kidney diseases in vitro. This review discusses the possibility of de novo organogenesis of a functional kidney from pluripotent stem cells and the future direction toward clinical applications.
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Affiliation(s)
- Atsuhiro Taguchi
- Department of Kidney Development, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto, Japan
| | - Ryuichi Nishinakamura
- Department of Kidney Development, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto, Japan
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18
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Shukrun R, Pode-Shakked N, Pleniceanu O, Omer D, Vax E, Peer E, Pri-Chen S, Jacob J, Hu Q, Harari-Steinberg O, Huff V, Dekel B. Wilms' tumor blastemal stem cells dedifferentiate to propagate the tumor bulk. Stem Cell Reports 2014; 3:24-33. [PMID: 25068119 PMCID: PMC4110791 DOI: 10.1016/j.stemcr.2014.05.013] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Revised: 05/18/2014] [Accepted: 05/19/2014] [Indexed: 12/15/2022] Open
Abstract
An open question remains in cancer stem cell (CSC) biology whether CSCs are by definition at the top of the differentiation hierarchy of the tumor. Wilms’ tumor (WT), composed of blastema and differentiated renal elements resembling the nephrogenic zone of the developing kidney, is a valuable model for studying this question because early kidney differentiation is well characterized. WT neural cell adhesion molecule 1-positive (NCAM1+) aldehyde dehydrogenase 1-positive (ALDH1+) CSCs have been recently isolated and shown to harbor early renal progenitor traits. Herein, by generating pure blastema WT xenografts, composed solely of cells expressing the renal developmental markers SIX2 and NCAM1, we surprisingly show that sorted ALDH1+ WT CSCs do not correspond to earliest renal stem cells. Rather, gene expression and proteomic comparative analyses disclose a cell type skewed more toward epithelial differentiation than the bulk of the blastema. Thus, WT CSCs are likely to dedifferentiate to propagate WT blastema. The Wilms’ tumor (WT) blastema can be exclusively propagated in mice Gene and protein analyses place the WT CSC at a specific developmental stage WT CSCs do not correspond to the earliest renal stem cells WT CSCs are likely to dedifferentiate to propagate WT blastema
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Affiliation(s)
- Rachel Shukrun
- Pediatric Stem Cell Research Institute, Sheba Medical Center, Tel Hashomer 5262000, Israel
- Sheba Centers for Regenerative Medicine and Cancer Research, Sheba Medical Center, Ramat-Gan, Tel Hashomer 5262000, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Naomi Pode-Shakked
- Pediatric Stem Cell Research Institute, Sheba Medical Center, Tel Hashomer 5262000, Israel
- Sheba Centers for Regenerative Medicine and Cancer Research, Sheba Medical Center, Ramat-Gan, Tel Hashomer 5262000, Israel
- Dr. Pinchas Borenstein Talpiot Medical Leadership Program 2013, Sheba Medical Center, Tel Hashomer 5262000, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Oren Pleniceanu
- Pediatric Stem Cell Research Institute, Sheba Medical Center, Tel Hashomer 5262000, Israel
- Sheba Centers for Regenerative Medicine and Cancer Research, Sheba Medical Center, Ramat-Gan, Tel Hashomer 5262000, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Dorit Omer
- Pediatric Stem Cell Research Institute, Sheba Medical Center, Tel Hashomer 5262000, Israel
- Sheba Centers for Regenerative Medicine and Cancer Research, Sheba Medical Center, Ramat-Gan, Tel Hashomer 5262000, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Einav Vax
- Pediatric Stem Cell Research Institute, Sheba Medical Center, Tel Hashomer 5262000, Israel
- Sheba Centers for Regenerative Medicine and Cancer Research, Sheba Medical Center, Ramat-Gan, Tel Hashomer 5262000, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Eyal Peer
- Sheba Centers for Regenerative Medicine and Cancer Research, Sheba Medical Center, Ramat-Gan, Tel Hashomer 5262000, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Sara Pri-Chen
- The Maurice and Gabriela Goldschleger Eye Research Institute, Sheba Medical Center, Tel Hashomer 5262000, Israel
| | - Jasmine Jacob
- Sheba Centers for Regenerative Medicine and Cancer Research, Sheba Medical Center, Ramat-Gan, Tel Hashomer 5262000, Israel
| | - Qianghua Hu
- Department of Genetics, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Orit Harari-Steinberg
- Pediatric Stem Cell Research Institute, Sheba Medical Center, Tel Hashomer 5262000, Israel
- Sheba Centers for Regenerative Medicine and Cancer Research, Sheba Medical Center, Ramat-Gan, Tel Hashomer 5262000, Israel
| | - Vicki Huff
- Department of Genetics, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Benjamin Dekel
- Pediatric Stem Cell Research Institute, Sheba Medical Center, Tel Hashomer 5262000, Israel
- Sheba Centers for Regenerative Medicine and Cancer Research, Sheba Medical Center, Ramat-Gan, Tel Hashomer 5262000, Israel
- The Maurice and Gabriela Goldschleger Eye Research Institute, Sheba Medical Center, Tel Hashomer 5262000, Israel
- Division of Pediatric Nephrology, Sheba Medical Center, Tel Hashomer 5262000, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
- Corresponding author
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19
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Johansson ME. Tubular Regeneration: When Can the Kidney Regenerate from Injury and What Turns Failure into Success. ACTA ACUST UNITED AC 2014; 126:76. [DOI: 10.1159/000360671] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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20
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Abstract
There is an expanding and exciting repertoire of PET imaging radiotracers for urogenital diseases, particularly in prostate cancer, renal cell cancer, and renal function. Prostate cancer is the most commonly diagnosed cancer in men. With growing therapeutic options for the treatment of metastatic and advanced prostate cancer, improved functional imaging of prostate cancer beyond the limitations of conventional CT and bone scan is becoming increasingly important for both clinical management and drug development. PET radiotracers, apart from ¹⁸F-FDG, for prostate cancer are ¹⁸F-sodium fluoride, ¹¹C-choline, and ¹⁸F-fluorocholine, and (¹¹C-acetate. Other emerging and promising PET radiotracers include a synthetic l-leucine amino acid analogue (anti-¹⁸F-fluorocyclobutane-1-carboxylic acid), dihydrotestosterone analogue (¹⁸F-fluoro-5α-dihydrotestosterone), and prostate-specific membrane antigen-based PET radiotracers (eg, N-[N-[(S)-1,3-dicarboxypropyl]carbamoyl]-4-¹⁸F-fluorobenzyl-l-cysteine, ⁸⁹Zr-DFO-J591, and ⁶⁸Ga [HBED-CC]). Larger prospective and comparison trials of these PET radiotracers are needed to establish the role of PET/CT in prostate cancer. Although renal cell cancer imaging with FDG-PET/CT is available, it can be limited, especially for detection of the primary tumor. Improved renal cell cancer detection with carbonic anhydrase IX (CAIX)-based antibody (¹²⁴I-girentuximab) and radioimmunotherapy targeting with ¹⁷⁷Lu-cG250 appear promising. Evaluation of renal injury by imaging renal perfusion and function with novel PET radiotracers include p-¹⁸F-fluorohippurate, hippurate m-cyano-p-¹⁸F-fluorohippurate, and rubidium-82 chloride (typically used for myocardial perfusion imaging). Renal receptor imaging of the renal renin-angiotensin system with a variety of selective PET radioligands is also becoming available for clinical translation.
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Affiliation(s)
- Steve Y Cho
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins School of Medicine, Baltimore, MD
| | - Zsolt Szabo
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins School of Medicine, Baltimore, MD.
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21
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Abstract
Congenital anomalies of the kidney and urinary tract (CAKUT) affect 1/500 live births. CAKUT lead to end stage renal failure in children, and are associated with high morbidity rates. Understanding the mechanisms of kidney development, and that of other associated urogenital tissues, is crucial to the prevention and treatment of CAKUT. The kidney arises from self-renewing mesenchymal renal stem cells that produce nephrons, which are the principal functional units of the organ. To date, the genetic and cellular mechanisms that control nephrogenesis have remained poorly understood. In recent years, developmental studies using amphibians and zebrafish have revealed that their simple embryonic kidney, known as the pronephros, is a useful paradigm for comparative studies of nephron ontogeny. Here, we discuss the new found roles for Iroquois transcription factors in pronephric nephron patterning, and explore the relevance of these findings for kidney development in humans.
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Affiliation(s)
| | - Rebecca A. Wingert
- Corresponding author: Rebecca A. Wingert, Department of Biological Sciences, University of Notre Dame, Notre Dame, IN 46556, USA, Tel: 574-631-0907; Fax: 574-631-7413;
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