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Grammer C, Komorowska JA, Swann JB. Vhl safeguards thymic epithelial cell identity and thymopoietic capacity by constraining Hif1a activity during development. iScience 2024; 27:110258. [PMID: 39040069 PMCID: PMC11261450 DOI: 10.1016/j.isci.2024.110258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 03/15/2024] [Accepted: 06/10/2024] [Indexed: 07/24/2024] Open
Abstract
The thymus is a physiologically hypoxic organ and fulfills its role of generating T cells under low-oxygen conditions. We have therefore investigated how thymic epithelial cells (TECs) cope with physiological hypoxia by focusing on the role of the Hif1a-Vhl axis. In most cell types, the oxygen-labile transcriptional regulator Hif1a is a central player in co-ordinating responses to low oxygen: under normoxic conditions Hif1a is rapidly degraded in a Vhl-guided manner; however, under hypoxic conditions Hif1a is stabilized and can execute its transcriptional functions. Unexpectedly, we find that, although TECs reside in a hypoxic microenvironment, they express little Hif1a protein and do not require Hif1a for their development or function. Instead, we find that Vhl function in TECs is vital to constrain Hif1a activity, as loss of Vhl results in dramatic defects in TEC differentiation and thymopoiesis, which can be rescued by Hif1a co-depletion.
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Affiliation(s)
- Christiane Grammer
- Department of Developmental Immunology, Max Planck-Institute of Immunobiology and Epigenetics, Freiburg, Germany
| | - Julia A. Komorowska
- Department of Developmental Immunology, Max Planck-Institute of Immunobiology and Epigenetics, Freiburg, Germany
- Albert Ludwig University, Faculty of Biology, Freiburg, Germany
| | - Jeremy B. Swann
- Department of Developmental Immunology, Max Planck-Institute of Immunobiology and Epigenetics, Freiburg, Germany
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2
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Slawski J, Jaśkiewicz M, Barton A, Kozioł S, Collawn JF, Bartoszewski R. Regulation of the HIF switch in human endothelial and cancer cells. Eur J Cell Biol 2024; 103:151386. [PMID: 38262137 DOI: 10.1016/j.ejcb.2024.151386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 01/17/2024] [Accepted: 01/17/2024] [Indexed: 01/25/2024] Open
Abstract
Hypoxia-inducible factors (HIFs) are transcription factors that reprogram the transcriptome for cells to survive hypoxic insults and oxidative stress. They are important during embryonic development and reprogram the cells to utilize glycolysis when the oxygen levels are extremely low. This metabolic change facilitates normal cell survival as well as cancer cell survival. The key feature in survival is the transition between acute hypoxia and chronic hypoxia, and this is regulated by the transition between HIF-1 expression and HIF-2/HIF-3 expression. This transition is observed in many human cancers and endothelial cells and referred to as the HIF Switch. Here we discuss the mechanisms involved in the HIF Switch in human endothelial and cancer cells which include mRNA and protein levels of the alpha chains of the HIFs. A major continuing effort in this field is directed towards determining the differences between normal and tumor cell utilization of this important pathway, and how this could lead to potential therapeutic approaches.
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Affiliation(s)
- Jakub Slawski
- Department of Biophysics, Faculty of Biotechnology, University of Wroclaw, Wroclaw, Poland
| | - Maciej Jaśkiewicz
- International Research Agenda 3P, Medicine Laboratory, Medical University of Gdansk, Gdansk, Poland
| | - Anna Barton
- Department of Biophysics, Faculty of Biotechnology, University of Wroclaw, Wroclaw, Poland
| | - Sylwia Kozioł
- Department of Biophysics, Faculty of Biotechnology, University of Wroclaw, Wroclaw, Poland
| | - James F Collawn
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, USA
| | - Rafał Bartoszewski
- Department of Biophysics, Faculty of Biotechnology, University of Wroclaw, Wroclaw, Poland.
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3
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Prakasam G, Mishra A, Christie A, Miyata J, Carrillo D, Tcheuyap VT, Ye H, Do QN, Wang Y, Reig Torras O, Butti R, Zhong H, Gagan J, Jones KB, Carroll TJ, Modrusan Z, Durinck S, Requena-Komuro MC, Williams NS, Pedrosa I, Wang T, Rakheja D, Kapur P, Brugarolas J. Comparative genomics incorporating translocation renal cell carcinoma mouse model reveals molecular mechanisms of tumorigenesis. J Clin Invest 2024; 134:e170559. [PMID: 38386415 PMCID: PMC10977987 DOI: 10.1172/jci170559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 02/06/2024] [Indexed: 02/24/2024] Open
Abstract
Translocation renal cell carcinoma (tRCC) most commonly involves an ASPSCR1-TFE3 fusion, but molecular mechanisms remain elusive and animal models are lacking. Here, we show that human ASPSCR1-TFE3 driven by Pax8-Cre (a credentialed clear cell RCC driver) disrupted nephrogenesis and glomerular development, causing neonatal death, while the clear cell RCC failed driver, Sglt2-Cre, induced aggressive tRCC (as well as alveolar soft part sarcoma) with complete penetrance and short latency. However, in both contexts, ASPSCR1-TFE3 led to characteristic morphological cellular changes, loss of epithelial markers, and an epithelial-mesenchymal transition. Electron microscopy of tRCC tumors showed lysosome expansion, and functional studies revealed simultaneous activation of autophagy and mTORC1 pathways. Comparative genomic analyses encompassing an institutional human tRCC cohort (including a hitherto unreported SFPQ-TFEB fusion) and a variety of tumorgraft models (ASPSCR1-TFE3, PRCC-TFE3, SFPQ-TFE3, RBM10-TFE3, and MALAT1-TFEB) disclosed significant convergence in canonical pathways (cell cycle, lysosome, and mTORC1) and less established pathways such as Myc, E2F, and inflammation (IL-6/JAK/STAT3, interferon-γ, TLR signaling, systemic lupus, etc.). Therapeutic trials (adjusted for human drug exposures) showed antitumor activity of cabozantinib. Overall, this study provides insight into MiT/TFE-driven tumorigenesis, including the cell of origin, and characterizes diverse mouse models available for research.
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Affiliation(s)
- Gopinath Prakasam
- Kidney Cancer Program, Simmons Comprehensive Cancer Center
- Hematology-Oncology Division, Department of Internal Medicine
| | - Akhilesh Mishra
- Kidney Cancer Program, Simmons Comprehensive Cancer Center
- Hematology-Oncology Division, Department of Internal Medicine
| | - Alana Christie
- Kidney Cancer Program, Simmons Comprehensive Cancer Center
- Peter O’ Donnell Jr. School of Public Health
| | - Jeffrey Miyata
- Kidney Cancer Program, Simmons Comprehensive Cancer Center
- Hematology-Oncology Division, Department of Internal Medicine
| | - Deyssy Carrillo
- Kidney Cancer Program, Simmons Comprehensive Cancer Center
- Hematology-Oncology Division, Department of Internal Medicine
| | - Vanina T. Tcheuyap
- Kidney Cancer Program, Simmons Comprehensive Cancer Center
- Hematology-Oncology Division, Department of Internal Medicine
| | - Hui Ye
- Kidney Cancer Program, Simmons Comprehensive Cancer Center
- Hematology-Oncology Division, Department of Internal Medicine
| | | | - Yunguan Wang
- Quantitative Biomedical Research Center, Department of Population and Data Sciences, The University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Oscar Reig Torras
- Kidney Cancer Program, Simmons Comprehensive Cancer Center
- Department of Medical Oncology and Translational Genomics and Targeted Therapies in Solid Tumors, Institut d’Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), Hospital Clinic de Barcelona, Barcelona, Spain
| | - Ramesh Butti
- Kidney Cancer Program, Simmons Comprehensive Cancer Center
- Hematology-Oncology Division, Department of Internal Medicine
| | - Hua Zhong
- Kidney Cancer Program, Simmons Comprehensive Cancer Center
- Department of Pathology, The University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Jeffrey Gagan
- Department of Pathology, The University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Kevin B. Jones
- Department of Orthopaedics and Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, Utah, USA
| | - Thomas J. Carroll
- Department of Molecular Biology and Department of Internal Medicine, The University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Zora Modrusan
- Department of Microchemistry, Proteomics, Lipidomics and Next Generation Sequencing and
| | - Steffen Durinck
- Department of Oncology Bioinformatics, Genentech Inc., South San Francisco, California, USA
| | - Mai-Carmen Requena-Komuro
- Kidney Cancer Program, Simmons Comprehensive Cancer Center
- Hematology-Oncology Division, Department of Internal Medicine
| | | | - Ivan Pedrosa
- Kidney Cancer Program, Simmons Comprehensive Cancer Center
- Department of Radiology, and
- Advanced Imaging Research Center, and
- Department of Urology, The University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Tao Wang
- Kidney Cancer Program, Simmons Comprehensive Cancer Center
- Peter O’ Donnell Jr. School of Public Health
- Quantitative Biomedical Research Center, Department of Population and Data Sciences, The University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Dinesh Rakheja
- Department of Pathology, The University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Payal Kapur
- Kidney Cancer Program, Simmons Comprehensive Cancer Center
- Department of Pathology, The University of Texas Southwestern Medical Center, Dallas, Texas, USA
- Department of Urology, The University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - James Brugarolas
- Kidney Cancer Program, Simmons Comprehensive Cancer Center
- Hematology-Oncology Division, Department of Internal Medicine
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Papaioannou VE, Behringer RR. Analysis of Mid- to Late-Gestation Phenotypes in Mice. Cold Spring Harb Protoc 2024; 2024:107973. [PMID: 37932082 DOI: 10.1101/pdb.over107973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2023]
Abstract
Mid- to late gestation is characterized by tissue differentiation, maturation, organogenesis, and growth, and many mutant genes have detrimental effects during this phase of development. The outcome may be lethal before birth or may be compatible with life but result in birth defects. Some of the common causes of death during late gestation are hematopoietic defects, cardiovascular problems, and placental insufficiency. Many morphological abnormalities, lethal or not, can be investigated with gross and histological analyses or by visualization of the developing skeleton. Molecular characterization of mutant phenotypes, guided by the expression pattern of the mutant gene, can reveal disruptions in gene expression patterns of known developmental genes. Cell proliferation and cell death assays will reveal disruptions in cellular dynamics. Various modalities of 3D imaging of intact embryos can provide volumetric information about mutant phenotypes.
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Affiliation(s)
- Virginia E Papaioannou
- Department of Genetics and Development, Columbia University Medical Center, New York, New York 10032, USA
| | - Richard R Behringer
- Department of Genetics, University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
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Karna B, Pellegata NS, Mohr H. Animal and Cell Culture Models of PPGLs - Achievements and Limitations. Horm Metab Res 2024; 56:51-64. [PMID: 38171372 DOI: 10.1055/a-2204-4549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Research on rare tumors heavily relies on suitable models for basic and translational research. Paragangliomas (PPGL) are rare neuroendocrine tumors (NET), developing from adrenal (pheochromocytoma, PCC) or extra-adrenal (PGL) chromaffin cells, with an annual incidence of 2-8 cases per million. While most PPGL cases exhibit slow growth and are primarily treated with surgery, limited systemic treatment options are available for unresectable or metastatic tumors. Scarcity of appropriate models has hindered PPGL research, preventing the translation of omics knowledge into drug and therapy development. Human PPGL cell lines are not available, and few animal models accurately replicate the disease's genetic and phenotypic characteristics. This review provides an overview of laboratory models for PPGLs, spanning cellular, tissue, organ, and organism levels. We discuss their features, advantages, and potential contributions to diagnostics and therapeutics. Interestingly, it appears that in the PPGL field, disease models already successfully implemented in other cancers have not been fully explored.
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Affiliation(s)
- Bhargavi Karna
- Institute for Diabetes and Cancer, Helmholtz Center Munich - German Research Center for Environmental Health, Neuherberg, Germany
| | - Natalia Simona Pellegata
- Institute for Diabetes and Cancer, Helmholtz Center Munich - German Research Center for Environmental Health, Neuherberg, Germany
- Department of Biology and Biotechnology, University of Pavia, Pavia, Italy
| | - Hermine Mohr
- Institute for Diabetes and Cancer, Helmholtz Center Munich - German Research Center for Environmental Health, Neuherberg, Germany
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Liao Q, Deng H, Wang Z, Yu G, Zhu C, Jia S, Liu W, Bai Y, Sun X, Chen X, Xiao W, Liu X. Deletion of prolyl hydroxylase domain-containing enzyme 3 (phd3) in zebrafish facilitates hypoxia tolerance. J Biol Chem 2023; 299:105420. [PMID: 37923141 PMCID: PMC10724695 DOI: 10.1016/j.jbc.2023.105420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 10/16/2023] [Accepted: 10/26/2023] [Indexed: 11/07/2023] Open
Abstract
Prolyl hydroxylase domain (PHD)-containing enzyme 3 (PHD3) belongs to the Caenorhabditis elegans gene egl-9 family of prolyl hydroxylases. PHD3 catalyzes proline hydroxylation of hypoxia-inducible factor α (HIF-α) and promotes HIF-α proteasomal degradation through coordination with the pVHL complex under normoxic conditions. However, the relationship between PHD3 and the hypoxic response is not well understood. In this study, we used quantitative real-time PCR assay and O-dianisidine staining to characterize the hypoxic response in zebrafish deficient in phd3. We found that the hypoxia-responsive genes are upregulated and the number of erythrocytes was increased in phd3-null zebrafish compared with their wild-type siblings. On the other hand, we show overexpression of phd3 suppresses HIF-transcriptional activation. In addition, we demonstrate phd3 promotes polyubiquitination of zebrafish hif-1/2α proteins, leading to their proteasomal degradation. Finally, we found that compared with wild-type zebrafish, phd3-null zebrafish are more resistant to hypoxia treatment. Therefore, we conclude phd3 has a role in hypoxia tolerance. These results highlight the importance of modulation of the hypoxia signaling pathway by phd3 in hypoxia adaptation.
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Affiliation(s)
- Qian Liao
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R.China; Hubei Hongshan Laboratory, Wuhan, P. R.China; University of Chinese Academy of Sciences, Beijing, P. R.China
| | - Hongyan Deng
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R.China; College of Life Science, Wuhan University, Wuhan, P. R.China
| | - Zixuan Wang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R.China; Hubei Hongshan Laboratory, Wuhan, P. R.China; University of Chinese Academy of Sciences, Beijing, P. R.China
| | - Guangqing Yu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R.China
| | - Chunchun Zhu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R.China; Hubei Hongshan Laboratory, Wuhan, P. R.China
| | - Shuke Jia
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R.China; Hubei Hongshan Laboratory, Wuhan, P. R.China; University of Chinese Academy of Sciences, Beijing, P. R.China
| | - Wen Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R.China; Hubei Hongshan Laboratory, Wuhan, P. R.China; University of Chinese Academy of Sciences, Beijing, P. R.China
| | - Yao Bai
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R.China; Hubei Hongshan Laboratory, Wuhan, P. R.China; University of Chinese Academy of Sciences, Beijing, P. R.China
| | - Xueyi Sun
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R.China; Hubei Hongshan Laboratory, Wuhan, P. R.China; University of Chinese Academy of Sciences, Beijing, P. R.China
| | - Xiaoyun Chen
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R.China; Hubei Hongshan Laboratory, Wuhan, P. R.China; University of Chinese Academy of Sciences, Beijing, P. R.China
| | - Wuhan Xiao
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R.China; Hubei Hongshan Laboratory, Wuhan, P. R.China; University of Chinese Academy of Sciences, Beijing, P. R.China; The Innovation of Seed Design, Chinese Academy of Sciences, Wuhan, P. R.China.
| | - Xing Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, P. R.China; University of Chinese Academy of Sciences, Beijing, P. R.China; The Innovation of Seed Design, Chinese Academy of Sciences, Wuhan, P. R.China.
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7
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Krakowiak A, Pietrasik S. New Insights into Oxidative and Reductive Stress Responses and Their Relation to the Anticancer Activity of Selenium-Containing Compounds as Hydrogen Selenide Donors. BIOLOGY 2023; 12:875. [PMID: 37372159 DOI: 10.3390/biology12060875] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 06/02/2023] [Accepted: 06/13/2023] [Indexed: 06/29/2023]
Abstract
Redox balance is important for the homeostasis of normal cells, but also for the proliferation, progression, and survival of cancer cells. Both oxidative and reductive stress can be harmful to cells. In contrast to oxidative stress, reductive stress and the therapeutic opportunities underlying the mechanisms of reductive stress in cancer, as well as how cancer cells respond to reductive stress, have received little attention and are not as well characterized. Therefore, there is recent interest in understanding how selective induction of reductive stress may influence therapeutic treatment and disease progression in cancer. There is also the question of how cancer cells respond to reductive stress. Selenium compounds have been shown to have chemotherapeutic effects against cancer, and their anticancer mechanism is thought to be related to the formation of their metabolites, including hydrogen selenide (H2Se), which is a highly reactive and reducing molecule. Here, we highlight recent reports on the molecular mechanism of how cells recognize and respond to oxidative and reductive stress (1) and the mechanisms through which different types of selenium compounds can generate H2Se (2) and thus selectively affect reductive stress under controlled conditions, which may be important for their anticancer effects.
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Affiliation(s)
- Agnieszka Krakowiak
- Department of Bioorganic Chemistry, Centre of Molecular and Macromolecular Studies Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland
| | - Sylwia Pietrasik
- Department of Bioorganic Chemistry, Centre of Molecular and Macromolecular Studies Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland
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Abstract
Germline loss-of-function mutations of the VHL tumor suppressor gene cause von Hippel–Lindau disease, which is associated with an increased risk of hemangioblastomas, clear cell renal cell carcinomas (ccRCCs), and paragangliomas. This Review describes mechanisms involving the VHL gene product in oxygen sensing, protein degradation, and tumor development and current therapeutic strategies targeting these mechanisms. The VHL gene product is the substrate recognition subunit of a ubiquitin ligase that targets the α subunit of the heterodimeric hypoxia-inducible factor (HIF) transcription factor for proteasomal degradation when oxygen is present. This oxygen dependence stems from the requirement that HIFα be prolyl-hydroxylated on one (or both) of two conserved prolyl residues by members of the EglN (also called PHD) prolyl hydroxylase family. Deregulation of HIF, and particularly HIF2, drives the growth of VHL-defective ccRCCs. Drugs that inhibit the HIF-responsive gene product VEGF are now mainstays of ccRCC treatment. An allosteric HIF2 inhibitor was recently approved for the treatment of ccRCCs arising in the setting of VHL disease and has advanced to phase III testing for sporadic ccRCCs based on promising phase I/II data. Orally available EglN inhibitors are being tested for the treatment of anemia and ischemia. Five of these agents have been approved for the treatment of anemia in the setting of chronic kidney disease in various countries around the world.
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Kojima J, Ono M, Kuji N, Nishi H. Human Chorionic Villous Differentiation and Placental Development. Int J Mol Sci 2022; 23:ijms23148003. [PMID: 35887349 PMCID: PMC9325306 DOI: 10.3390/ijms23148003] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 07/19/2022] [Accepted: 07/19/2022] [Indexed: 02/04/2023] Open
Abstract
In humans, the placenta provides the only fetomaternal connection and is essential for establishing a pregnancy as well as fetal well-being. Additionally, it allows maternal physiological adaptation and embryonic immunological acceptance, support, and nutrition. The placenta is derived from extra-embryonic tissues that develop rapidly and dynamically in the first weeks of pregnancy. It is primarily composed of trophoblasts that differentiate into villi, stromal cells, macrophages, and fetal endothelial cells (FEC). Placental differentiation may be closely related to perinatal diseases, including fetal growth retardation (FGR) and hypertensive disorders of pregnancy (HDP), and miscarriage. There are limited findings regarding human chorionic villous differentiation and placental development because conducting in vivo studies is extremely difficult. Placental tissue varies widely among species. Thus, experimental animal findings are difficult to apply to humans. Early villous differentiation is difficult to study due to the small tissue size; however, a detailed analysis can potentially elucidate perinatal disease causes or help develop novel therapies. Artificial induction of early villous differentiation using human embryonic stem (ES) cells/induced pluripotent stem (iPS) cells was attempted, producing normally differentiated villi that can be used for interventional/invasive research. Here, we summarized and correlated early villous differentiation findings and discussed clinical diseases.
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10
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Garcés-Lázaro I, Kotzur R, Cerwenka A, Mandelboim O. NK Cells Under Hypoxia: The Two Faces of Vascularization in Tumor and Pregnancy. Front Immunol 2022; 13:924775. [PMID: 35769460 PMCID: PMC9234265 DOI: 10.3389/fimmu.2022.924775] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 05/17/2022] [Indexed: 01/14/2023] Open
Abstract
Environmental conditions greatly shape the phenotype and function of immune cells. Specifically, hypoxic conditions that exist within tissues and organs have been reported to affect both the adaptive and the innate immune system. Natural killer (NK) cells belong to the innate immune system. They are among the first immune cells responding to infections and are involved in tumor surveillance. NK cells produce cytokines that shape other innate and adaptive immune cells, and they produce cytolytic molecules leading to target cell killing. Therefore, they are not only involved in steady state tissue homeostasis, but also in pathogen and tumor clearance. Hence, understanding the role of NK cells in pathological and physiological immune biology is an emerging field. To date, it remains incompletely understood how the tissue microenvironment shapes NK cell phenotype and function. In particular, the impact of low oxygen concentrations in tissues on NK cell reactivity has not been systematically dissected. Here, we present a comprehensive review focusing on two highly compelling hypoxic tissue environments, the tumor microenvironment (pathological) and the decidua (physiological) and compare their impact on NK cell reactivity.
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Affiliation(s)
- Irene Garcés-Lázaro
- Department of Immunobiochemistry, Mannheim Institute of Innate Immunosciences (MI3), Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Rebecca Kotzur
- The Lautenberg Center for General and Tumor Immunology, Institute for Medical Research Israel-Canada, The Hebrew University Hadassah Medical School, Jerusalem, Israel
| | - Adelheid Cerwenka
- Department of Immunobiochemistry, Mannheim Institute of Innate Immunosciences (MI3), Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
- European Center for Angioscience (ECAS), Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
- *Correspondence: Adelheid Cerwenka, ; Ofer Mandelboim,
| | - Ofer Mandelboim
- The Lautenberg Center for General and Tumor Immunology, Institute for Medical Research Israel-Canada, The Hebrew University Hadassah Medical School, Jerusalem, Israel
- *Correspondence: Adelheid Cerwenka, ; Ofer Mandelboim,
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11
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Physiological Function of the Dynamic Oxygen Signaling Pathway at the Maternal-fetal Interface. J Reprod Immunol 2022; 151:103626. [DOI: 10.1016/j.jri.2022.103626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 02/21/2022] [Accepted: 04/13/2022] [Indexed: 11/21/2022]
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12
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Moorthy BT, Jiang C, Patel DM, Ban Y, O'Shea CR, Kumar A, Yuan T, Birnbaum MD, Gomes AV, Chen X, Fontanesi F, Lampidis TJ, Barrientos A, Zhang F. The evolutionarily conserved arginyltransferase 1 mediates a pVHL-independent oxygen-sensing pathway in mammalian cells. Dev Cell 2022; 57:654-669.e9. [PMID: 35247316 PMCID: PMC8957288 DOI: 10.1016/j.devcel.2022.02.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 12/01/2021] [Accepted: 02/07/2022] [Indexed: 12/20/2022]
Abstract
The response to oxygen availability is a fundamental process concerning metabolism and survival/death in all mitochondria-containing eukaryotes. However, the known oxygen-sensing mechanism in mammalian cells depends on pVHL, which is only found among metazoans but not in other species. Here, we present an alternative oxygen-sensing pathway regulated by ATE1, an enzyme ubiquitously conserved in eukaryotes that influences protein degradation by posttranslational arginylation. We report that ATE1 centrally controls the hypoxic response and glycolysis in mammalian cells by preferentially arginylating HIF1α that is hydroxylated by PHD in the presence of oxygen. Furthermore, the degradation of arginylated HIF1α is independent of pVHL E3 ubiquitin ligase but dependent on the UBR family proteins. Bioinformatic analysis of human tumor data reveals that the ATE1/UBR and pVHL pathways jointly regulate oxygen sensing in a transcription-independent manner with different tissue specificities. Phylogenetic analysis suggests that eukaryotic ATE1 likely evolved during mitochondrial domestication, much earlier than pVHL.
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Affiliation(s)
- Balaji T Moorthy
- Department of Molecular & Cellular Pharmacology, University of Miami Leonard M. Miller School of Medicine, Miami, FL 33136, USA
| | - Chunhua Jiang
- Department of Molecular & Cellular Pharmacology, University of Miami Leonard M. Miller School of Medicine, Miami, FL 33136, USA
| | - Devang M Patel
- Department of Molecular & Cellular Pharmacology, University of Miami Leonard M. Miller School of Medicine, Miami, FL 33136, USA
| | - Yuguang Ban
- Department of Public Health Sciences, University of Miami Leonard M. Miller School of Medicine, Miami, FL 33136, USA; Sylvester Comprehensive Cancer Center, University of Miami Leonard M. Miller School of Medicine, Miami, FL 33136, USA
| | - Corin R O'Shea
- Department of Molecular & Cellular Pharmacology, University of Miami Leonard M. Miller School of Medicine, Miami, FL 33136, USA
| | - Akhilesh Kumar
- Department of Molecular & Cellular Pharmacology, University of Miami Leonard M. Miller School of Medicine, Miami, FL 33136, USA
| | - Tan Yuan
- Department of Molecular & Cellular Pharmacology, University of Miami Leonard M. Miller School of Medicine, Miami, FL 33136, USA
| | - Michael D Birnbaum
- Department of Molecular & Cellular Pharmacology, University of Miami Leonard M. Miller School of Medicine, Miami, FL 33136, USA
| | - Aldrin V Gomes
- Department of Neurobiology, Physiology, and Behavior, Department of Physiology and Membrane Biology, University of California, Davis, Davis, CA 95616, USA
| | - Xi Chen
- Department of Public Health Sciences, University of Miami Leonard M. Miller School of Medicine, Miami, FL 33136, USA; Sylvester Comprehensive Cancer Center, University of Miami Leonard M. Miller School of Medicine, Miami, FL 33136, USA
| | - Flavia Fontanesi
- Department of Biochemistry & Molecular Biology, University of Miami Leonard M. Miller School of Medicine, Miami, FL 33136, USA
| | - Theodore J Lampidis
- Department of Cell Biology, University of Miami Leonard M. Miller School of Medicine, Miami, FL 33136, USA; Sylvester Comprehensive Cancer Center, University of Miami Leonard M. Miller School of Medicine, Miami, FL 33136, USA
| | - Antoni Barrientos
- Department of Neurology, University of Miami Leonard M. Miller School of Medicine, Miami, FL 33136, USA; Department of Biochemistry & Molecular Biology, University of Miami Leonard M. Miller School of Medicine, Miami, FL 33136, USA
| | - Fangliang Zhang
- Department of Molecular & Cellular Pharmacology, University of Miami Leonard M. Miller School of Medicine, Miami, FL 33136, USA; Sylvester Comprehensive Cancer Center, University of Miami Leonard M. Miller School of Medicine, Miami, FL 33136, USA.
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13
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McClements L, Richards C, Patel N, Chen H, Sesperez K, Bubb KJ, Karlstaedt A, Aksentijevic D. Impact of reduced uterine perfusion pressure model of preeclampsia on metabolism of placenta, maternal and fetal hearts. Sci Rep 2022; 12:1111. [PMID: 35064159 PMCID: PMC8782944 DOI: 10.1038/s41598-022-05120-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 12/31/2021] [Indexed: 12/23/2022] Open
Abstract
Preeclampsia is a cardiovascular pregnancy complication characterised by new onset hypertension and organ damage or intrauterine growth restriction. It is one of the leading causes of maternal and fetal mortality in pregnancy globally. Short of pre-term delivery of the fetus and placenta, treatment options are limited. Consequently, preeclampsia leads to increased cardiovascular disease risk in both mothers and offspring later in life. Here we aim to examine the impact of the reduced uterine perfusion pressure (RUPP) rat model of preeclampsia on the maternal cardiovascular system, placental and fetal heart metabolism. The surgical RUPP model was induced in pregnant rats by applying silver clips around the aorta and uterine arteries on gestational day 14, resulting in ~ 40% uterine blood flow reduction. The experiment was terminated on gestational day 19 and metabolomic profile of placentae, maternal and fetal hearts analysed using high-resolution 1H NMR spectroscopy. Impairment of uterine perfusion in RUPP rats caused placental and cardiac hypoxia and a series of metabolic adaptations: altered energetics, carbohydrate, lipid and amino acid metabolism of placentae and maternal hearts. Comparatively, the fetal metabolic phenotype was mildly affected. Nevertheless, long-term effects of these changes in both mothers and the offspring should be investigated further in the future.
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Affiliation(s)
- Lana McClements
- School of Life Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW, Australia
| | - Claire Richards
- School of Life Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW, Australia
| | - Nikayla Patel
- Centre for Biochemical Pharmacology, William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, Charterhouse Square, London, EC1M 6BQ, UK
| | - Hao Chen
- School of Life Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW, Australia
| | - Kimberly Sesperez
- School of Life Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW, Australia
| | - Kristen J Bubb
- Biomedical Discovery Institute, Monash University, Melbourne, Australia
| | - Anja Karlstaedt
- Department of Cardiology, Smidt Heart Institute, Cedars Sinai Medical Center, Los Angeles, CA, USA, 127 San Vincente Blvd, 90048
| | - Dunja Aksentijevic
- Centre for Biochemical Pharmacology, William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, Charterhouse Square, London, EC1M 6BQ, UK.
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14
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Hypoxia signaling and oxygen metabolism in cardio-oncology. J Mol Cell Cardiol 2022; 165:64-75. [PMID: 34979102 DOI: 10.1016/j.yjmcc.2021.12.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 12/05/2021] [Accepted: 12/27/2021] [Indexed: 12/26/2022]
Abstract
Cardio-oncology is a rapidly growing field in cardiology that focuses on the management of cardiovascular toxicities associated with cancer-directed therapies. Tumor hypoxia is a central driver of pathologic tumor growth, metastasis, and chemo-resistance. In addition, conditions that mimic hypoxia (pseudo-hypoxia) play a causal role in the pathogenesis of numerous types of cancer, including renal cell carcinoma. Therefore, therapies targeted at hypoxia signaling pathways have emerged over the past several years. Though efficacious, these therapies are associated with significant cardiovascular toxicities, ranging from hypertension to cardiomyopathy. This review focuses on oxygen metabolism in tumorigenesis, the role of targeting hypoxia signaling in cancer therapy, and the relevance of oxygen metabolism in cardio-oncology. This review will specifically focus on hypoxia signaling mediated by hypoxia-inducible factors and the prolyl hydroxylase oxygen-sensing enzymes, the cardiovascular effects of specific cancer targeted therapies mediated on VEGF and HIF signaling, hypoxic signaling in cardiovascular disease, and the role of oxygen in anthracycline cardiotoxicity. The implications of these therapies on myocardial biology and cardiac function are discussed, underlining the fine balance of hypoxia signaling in cardiac homeostasis. Understanding these cardiovascular toxicities will be important to optimize treatment for cancer patients while mitigating potentially severe cardiovascular side effects.
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15
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Elmore SA, Cochran RZ, Bolon B, Lubeck B, Mahler B, Sabio D, Ward JM. Histology Atlas of the Developing Mouse Placenta. Toxicol Pathol 2021; 50:60-117. [PMID: 34872401 PMCID: PMC8678285 DOI: 10.1177/01926233211042270] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The use of the mouse as a model organism is common in translational research. This mouse-human similarity holds true for placental development as well. Proper formation of the placenta is vital for development and survival of the maturing embryo. Placentation involves sequential steps with both embryonic and maternal cell lineages playing important roles. The first step in placental development is formation of the blastocyst wall (approximate embryonic days [E] 3.0-3.5). After implantation (∼E4.5), extraembryonic endoderm progressively lines the inner surface of the blastocyst wall (∼E4.5-5.0), forming the yolk sac that provides histiotrophic support to the embryo; subsequently, formation of the umbilical vessels (∼E8.5) supports transition to the chorioallantoic placenta and hemotrophic nutrition. The fully mature ("definitive") placenta is established by ∼E12.5. Abnormal placental development often leads to embryonic mortality, with the timing of death depending on when placental insufficiency takes place and which cells are involved. This comprehensive macroscopic and microscopic atlas highlights the key features of normal and abnormal mouse placental development from E4.5 to E18.5. This in-depth overview of a transient (and thus seldom-analyzed) developmental tissue should serve as a useful reference to aid researchers in identifying and describing mouse placental changes in engineered, induced, and spontaneous disease models.
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Affiliation(s)
- Susan A Elmore
- National Toxicology Program, 6857National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA
| | - Robert Z Cochran
- National Toxicology Program, 6857National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA
| | | | - Beth Lubeck
- National Toxicology Program, 6857National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA
| | - Beth Mahler
- Experimental Pathology Laboratories, Inc., Research Triangle Park, NC, USA
| | - David Sabio
- Experimental Pathology Laboratories, Inc., Research Triangle Park, NC, USA
| | - Jerrold M Ward
- Global Vet Pathology, Montgomery Village, MD, USA *Co-first authors
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16
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Jiang Y, Duan LJ, Fong GH. Oxygen-sensing mechanisms in development and tissue repair. Development 2021; 148:273632. [PMID: 34874450 DOI: 10.1242/dev.200030] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Under normoxia, hypoxia inducible factor (HIF) α subunits are hydroxylated by PHDs (prolyl hydroxylase domain proteins) and subsequently undergo polyubiquitylation and degradation. Normal embryogenesis occurs under hypoxia, which suppresses PHD activities and allows HIFα to stabilize and regulate development. In this Primer, we explain molecular mechanisms of the oxygen-sensing pathway, summarize HIF-regulated downstream events, discuss loss-of-function phenotypes primarily in mouse development, and highlight clinical relevance to angiogenesis and tissue repair.
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Affiliation(s)
- Yida Jiang
- Center for Vascular Biology, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - Li-Juan Duan
- Center for Vascular Biology, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - Guo-Hua Fong
- Center for Vascular Biology, University of Connecticut Health Center, Farmington, CT 06030, USA.,Department of Cell Biology, University of Connecticut Health Center, Farmington, CT 06030, USA
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17
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Waker CA, Kaufman MR, Brown TL. Current State of Preeclampsia Mouse Models: Approaches, Relevance, and Standardization. Front Physiol 2021; 12:681632. [PMID: 34276401 PMCID: PMC8284253 DOI: 10.3389/fphys.2021.681632] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 05/24/2021] [Indexed: 12/14/2022] Open
Abstract
Preeclampsia (PE) is a multisystemic, pregnancy-specific disorder and a leading cause of maternal and fetal death. PE is also associated with an increased risk for chronic morbidities later in life for mother and offspring. Abnormal placentation or placental function has been well-established as central to the genesis of PE; yet much remains to be determined about the factors involved in the development of this condition. Despite decades of investigation and many clinical trials, the only definitive treatment is parturition. To better understand the condition and identify potential targets preclinically, many approaches to simulate PE in mice have been developed and include mixed mouse strain crosses, genetic overexpression and knockout, exogenous agent administration, surgical manipulation, systemic adenoviral infection, and trophoblast-specific gene transfer. These models have been useful to investigate how biological perturbations identified in human PE are involved in the generation of PE-like symptoms and have improved the understanding of the molecular mechanisms underpinning the human condition. However, these approaches were characterized by a wide variety of physiological endpoints, which can make it difficult to compare effects across models and many of these approaches have aspects that lack physiological relevance to this human disorder and may interfere with therapeutic development. This report provides a comprehensive review of mouse models that exhibit PE-like symptoms and a proposed standardization of physiological characteristics for analysis in murine models of PE.
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Affiliation(s)
- Christopher A Waker
- Department of Neuroscience, Cell Biology, and Physiology, Boonshoft School of Medicine, Wright State University, Dayton, OH, United States
| | - Melissa R Kaufman
- Department of Neuroscience, Cell Biology, and Physiology, Boonshoft School of Medicine, Wright State University, Dayton, OH, United States
| | - Thomas L Brown
- Department of Neuroscience, Cell Biology, and Physiology, Boonshoft School of Medicine, Wright State University, Dayton, OH, United States
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18
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Jonasch E, Walker CL, Rathmell WK. Clear cell renal cell carcinoma ontogeny and mechanisms of lethality. Nat Rev Nephrol 2021; 17:245-261. [PMID: 33144689 PMCID: PMC8172121 DOI: 10.1038/s41581-020-00359-2] [Citation(s) in RCA: 286] [Impact Index Per Article: 95.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/22/2020] [Indexed: 02/07/2023]
Abstract
The molecular features that define clear cell renal cell carcinoma (ccRCC) initiation and progression are being increasingly defined. The TRACERx Renal studies and others that have described the interaction between tumour genomics and remodelling of the tumour microenvironment provide important new insights into the molecular drivers underlying ccRCC ontogeny and progression. Our understanding of common genomic and chromosomal copy number abnormalities in ccRCC, including chromosome 3p loss, provides a mechanistic framework with which to organize these abnormalities into those that drive tumour initiation events, those that drive tumour progression and those that confer lethality. Truncal mutations in ccRCC, including those in VHL, SET2, PBRM1 and BAP1, may engender genomic instability and promote defects in DNA repair pathways. The molecular features that arise from these defects enable categorization of ccRCC into clinically and therapeutically relevant subtypes. Consideration of the interaction of these subtypes with the tumour microenvironment reveals that specific mutations seem to modulate immune cell populations in ccRCC tumours. These findings present opportunities for disease prevention, early detection, prognostication and treatment.
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Affiliation(s)
- Eric Jonasch
- Department of Genitourinary Medical Oncology, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
| | - Cheryl Lyn Walker
- Center for Precision Environmental Health, Baylor College of Medicine, Houston, TX, USA
| | - W Kimryn Rathmell
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
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19
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Manford AG, Rodríguez-Pérez F, Shih KY, Shi Z, Berdan CA, Choe M, Titov DV, Nomura DK, Rape M. A Cellular Mechanism to Detect and Alleviate Reductive Stress. Cell 2020; 183:46-61.e21. [PMID: 32941802 DOI: 10.1016/j.cell.2020.08.034] [Citation(s) in RCA: 86] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 05/28/2020] [Accepted: 08/18/2020] [Indexed: 12/14/2022]
Abstract
Metazoan organisms rely on conserved stress response pathways to alleviate adverse conditions and preserve cellular integrity. Stress responses are particularly important in stem cells that provide lifetime support for tissue formation and repair, but how these protective systems are integrated into developmental programs is poorly understood. Here we used myoblast differentiation to identify the E3 ligase CUL2FEM1B and its substrate FNIP1 as core components of the reductive stress response. Reductive stress, as caused by prolonged antioxidant signaling or mitochondrial inactivity, reverts the oxidation of invariant Cys residues in FNIP1 and allows CUL2FEM1B to recognize its target. The ensuing proteasomal degradation of FNIP1 restores mitochondrial activity to preserve redox homeostasis and stem cell integrity. The reductive stress response is therefore built around a ubiquitin-dependent rheostat that tunes mitochondrial activity to redox needs and implicates metabolic control in coordination of stress and developmental signaling.
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Affiliation(s)
- Andrew G Manford
- Department of Molecular and Cell Biology, University of California at Berkeley, Berkeley CA 94720, USA
| | - Fernando Rodríguez-Pérez
- Department of Molecular and Cell Biology, University of California at Berkeley, Berkeley CA 94720, USA; Howard Hughes Medical Institute, University of California at Berkeley, Berkeley CA 94720, USA
| | - Karen Y Shih
- Department of Molecular and Cell Biology, University of California at Berkeley, Berkeley CA 94720, USA; Howard Hughes Medical Institute, University of California at Berkeley, Berkeley CA 94720, USA
| | - Zhuo Shi
- Department of Molecular and Cell Biology, University of California at Berkeley, Berkeley CA 94720, USA
| | - Charles A Berdan
- Department of Nutritional Science and Toxicology, University of California at Berkeley, Berkeley CA 94720, USA
| | - Mangyu Choe
- Department of Molecular and Cell Biology, University of California at Berkeley, Berkeley CA 94720, USA; Department of Nutritional Science and Toxicology, University of California at Berkeley, Berkeley CA 94720, USA; Center for Computational Biology, University of California at Berkeley, Berkeley CA 94720, USA
| | - Denis V Titov
- Department of Molecular and Cell Biology, University of California at Berkeley, Berkeley CA 94720, USA; Department of Nutritional Science and Toxicology, University of California at Berkeley, Berkeley CA 94720, USA; Center for Computational Biology, University of California at Berkeley, Berkeley CA 94720, USA
| | - Daniel K Nomura
- Department of Molecular and Cell Biology, University of California at Berkeley, Berkeley CA 94720, USA; Department of Nutritional Science and Toxicology, University of California at Berkeley, Berkeley CA 94720, USA; Department of Chemistry, University of California at Berkeley, CA 94720, USA
| | - Michael Rape
- Department of Molecular and Cell Biology, University of California at Berkeley, Berkeley CA 94720, USA; Howard Hughes Medical Institute, University of California at Berkeley, Berkeley CA 94720, USA; California Institute for Quantitative Biosciences (QB3), University of California at Berkeley, Berkeley, CA 94720, USA.
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20
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Abstract
The discovery of the von Hippel-Lindau (VHL) gene marked a milestone in our understanding of clear cell renal cell carcinoma (ccRCC) pathogenesis. VHL inactivation is not only a defining feature of ccRCC, but also the initiating event. Herein, we discuss canonical and noncanonical pVHL functions, as well as breakthroughs shaping our understanding of ccRCC evolution and evolutionary subtypes. We conclude by presenting evolving strategies to therapeutically exploit effector mechanisms downstream of pVHL.
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21
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Hu CJ, Poth JM, Zhang H, Flockton A, Laux A, Kumar S, McKeon B, Mouradian G, Li M, Riddle S, Pugliese SC, Brown RD, Wallace EM, Graham BB, Frid MG, Stenmark KR. Suppression of HIF2 signalling attenuates the initiation of hypoxia-induced pulmonary hypertension. Eur Respir J 2019; 54:13993003.00378-2019. [PMID: 31515405 DOI: 10.1183/13993003.00378-2019] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 08/28/2019] [Indexed: 11/05/2022]
Abstract
Most published studies addressing the role of hypoxia inducible factors (HIFs) in hypoxia-induced pulmonary hypertension development employ models that may not recapitulate the clinical setting, including the use of animals with pre-existing lung/vascular defects secondary to embryonic HIF ablation or activation. Furthermore, critical questions including how and when HIF signalling contributes to hypoxia-induced pulmonary hypertension remain unanswered.Normal adult rodents in which global HIF1 or HIF2 was inhibited by inducible gene deletion or pharmacological inhibition (antisense oligonucleotides (ASO) and small molecule inhibitors) were exposed to short-term (4 days) or chronic (4-5 weeks) hypoxia. Haemodynamic studies were performed, the animals euthanised, and lungs and hearts obtained for pathological and transcriptomic analysis. Cell-type-specific HIF signals for pulmonary hypertension initiation were determined in normal pulmonary vascular cells in vitro and in mice (using cell-type-specific HIF deletion).Global Hif1a deletion in mice did not prevent hypoxia-induced pulmonary hypertension at 5 weeks. Mice with global Hif2a deletion did not survive long-term hypoxia. Partial Hif2a deletion or Hif2-ASO (but not Hif1-ASO) reduced vessel muscularisation, increases in pulmonary arterial pressures and right ventricular hypertrophy in mice exposed to 4-5 weeks of hypoxia. A small molecule HIF2 inhibitor (PT2567) significantly attenuated early events (monocyte recruitment and vascular cell proliferation) in rats exposed to 4 days of hypoxia, as well as vessel muscularisation, tenascin C accumulation and pulmonary hypertension development in rats exposed to 5 weeks of hypoxia. In vitro, HIF2 induced a distinct set of genes in normal human pulmonary vascular endothelial cells, mediating inflammation and proliferation of endothelial cells and smooth muscle cells. Endothelial Hif2a knockout prevented hypoxia-induced pulmonary hypertension in mice.Inhibition of HIF2 (but not HIF1) can provide a therapeutic approach to prevent the development of hypoxia-induced pulmonary hypertension. Future studies are needed to investigate the role of HIFs in pulmonary hypertension progression and reversal.
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Affiliation(s)
- Cheng-Jun Hu
- Dept of Craniofacial Biology, School of Dental Medicine, University of Colorado, Aurora, CO, USA.,Cardiovascular Pulmonary Research Laboratories, Division of Pulmonary Sciences and Critical Care Medicine, Division of Pediatrics-Critical Care, Depts of Medicine and Pediatrics, University of Colorado, Aurora, CO, USA.,These authors share first authorship.,These authors are joint corresponding authors
| | - Jens M Poth
- Cardiovascular Pulmonary Research Laboratories, Division of Pulmonary Sciences and Critical Care Medicine, Division of Pediatrics-Critical Care, Depts of Medicine and Pediatrics, University of Colorado, Aurora, CO, USA.,Dept of Anesthesiology and Intensive Care Medicine, University Medical Center, Rheinische Friedrich Wilhelms University of Bonn, Bonn, Germany.,These authors share first authorship
| | - Hui Zhang
- Cardiovascular Pulmonary Research Laboratories, Division of Pulmonary Sciences and Critical Care Medicine, Division of Pediatrics-Critical Care, Depts of Medicine and Pediatrics, University of Colorado, Aurora, CO, USA
| | - Amanda Flockton
- Cardiovascular Pulmonary Research Laboratories, Division of Pulmonary Sciences and Critical Care Medicine, Division of Pediatrics-Critical Care, Depts of Medicine and Pediatrics, University of Colorado, Aurora, CO, USA
| | - Aya Laux
- Dept of Craniofacial Biology, School of Dental Medicine, University of Colorado, Aurora, CO, USA
| | - Sushil Kumar
- Cardiovascular Pulmonary Research Laboratories, Division of Pulmonary Sciences and Critical Care Medicine, Division of Pediatrics-Critical Care, Depts of Medicine and Pediatrics, University of Colorado, Aurora, CO, USA
| | - Brittany McKeon
- Cardiovascular Pulmonary Research Laboratories, Division of Pulmonary Sciences and Critical Care Medicine, Division of Pediatrics-Critical Care, Depts of Medicine and Pediatrics, University of Colorado, Aurora, CO, USA
| | - Gary Mouradian
- Cardiovascular Pulmonary Research Laboratories, Division of Pulmonary Sciences and Critical Care Medicine, Division of Pediatrics-Critical Care, Depts of Medicine and Pediatrics, University of Colorado, Aurora, CO, USA
| | - Min Li
- Cardiovascular Pulmonary Research Laboratories, Division of Pulmonary Sciences and Critical Care Medicine, Division of Pediatrics-Critical Care, Depts of Medicine and Pediatrics, University of Colorado, Aurora, CO, USA
| | - Suzette Riddle
- Cardiovascular Pulmonary Research Laboratories, Division of Pulmonary Sciences and Critical Care Medicine, Division of Pediatrics-Critical Care, Depts of Medicine and Pediatrics, University of Colorado, Aurora, CO, USA
| | - Steven C Pugliese
- Cardiovascular Pulmonary Research Laboratories, Division of Pulmonary Sciences and Critical Care Medicine, Division of Pediatrics-Critical Care, Depts of Medicine and Pediatrics, University of Colorado, Aurora, CO, USA
| | - R Dale Brown
- Cardiovascular Pulmonary Research Laboratories, Division of Pulmonary Sciences and Critical Care Medicine, Division of Pediatrics-Critical Care, Depts of Medicine and Pediatrics, University of Colorado, Aurora, CO, USA
| | | | - Brian B Graham
- Cardiovascular Pulmonary Research Laboratories, Division of Pulmonary Sciences and Critical Care Medicine, Division of Pediatrics-Critical Care, Depts of Medicine and Pediatrics, University of Colorado, Aurora, CO, USA
| | - Maria G Frid
- Cardiovascular Pulmonary Research Laboratories, Division of Pulmonary Sciences and Critical Care Medicine, Division of Pediatrics-Critical Care, Depts of Medicine and Pediatrics, University of Colorado, Aurora, CO, USA
| | - Kurt R Stenmark
- Cardiovascular Pulmonary Research Laboratories, Division of Pulmonary Sciences and Critical Care Medicine, Division of Pediatrics-Critical Care, Depts of Medicine and Pediatrics, University of Colorado, Aurora, CO, USA .,These authors are joint corresponding authors
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22
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Kamrani A, Alipourfard I, Ahmadi-Khiavi H, Yousefi M, Rostamzadeh D, Izadi M, Ahmadi M. The role of epigenetic changes in preeclampsia. Biofactors 2019; 45:712-724. [PMID: 31343798 DOI: 10.1002/biof.1542] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Accepted: 06/13/2019] [Indexed: 12/11/2022]
Abstract
Preeclampsia (PE) is a disorder affecting 2-10% of pregnancies and has a major role for perinatal and maternal mortality and morbidity. PE can be occurred by initiation of new hypertension combined with proteinuria after 20 weeks gestation, as well as various reasons such as inflammatory cytokines, poor trophoblast invasion can be related with PE disease. Environmental factors can cause epigenetic changes including DNA methylation, microRNAs (miRNAs), and histone modification that may be related to different diseases such as PE. Abnormal DNA methylation during placentation is the most important epigenetic factor correlated with PE. Moreover, changes in histone modification like acetylation and also the effect of overregulation or low regulation of miRNAs or long noncoding RNAs on variety signaling pathways can be resulted in PE. The aim of this review is to describe of studies about epigenetic changes in PE and its therapeutic strategies.
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Affiliation(s)
- Amin Kamrani
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Student's Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Iraj Alipourfard
- Center of Pharmaceutical Sciences, Faculty of Life Sciences, University of Vienna, Vienna, Austria
| | | | - Mehdi Yousefi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Davood Rostamzadeh
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Morteza Izadi
- Health Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Majid Ahmadi
- Reproductive Biology Department, Tabriz University of Medical Sciences, Tabriz, Iran
- Women's Reproductive Health Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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23
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Koutelou E, Wang L, Schibler AC, Chao HP, Kuang X, Lin K, Lu Y, Shen J, Jeter CR, Salinger A, Wilson M, Chen YC, Atanassov BS, Tang DG, Dent SYR. USP22 controls multiple signaling pathways that are essential for vasculature formation in the mouse placenta. Development 2019; 146:dev.174037. [PMID: 30718289 DOI: 10.1242/dev.174037] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Accepted: 01/24/2019] [Indexed: 12/14/2022]
Abstract
USP22, a component of the SAGA complex, is overexpressed in highly aggressive cancers, but the normal functions of this deubiquitinase are not well defined. We determined that loss of USP22 in mice results in embryonic lethality due to defects in extra-embryonic placental tissues and failure to establish proper vascular interactions with the maternal circulatory system. These phenotypes arise from abnormal gene expression patterns that reflect defective kinase signaling, including TGFβ and several receptor tyrosine kinase pathways. USP22 deletion in endothelial cells and pericytes that are induced from embryonic stem cells also hinders these signaling cascades, with detrimental effects on cell survival and differentiation as well as on the ability to form vessels. Our findings provide new insights into the functions of USP22 during development that may offer clues to its role in disease states.
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Affiliation(s)
- Evangelia Koutelou
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA .,Center for Cancer Epigenetics, University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA.,The University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA
| | - Li Wang
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA.,Center for Cancer Epigenetics, University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA.,The University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA.,Program in Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.,MD Anderson UTHealth Graduate School of Biomedical Sciences, University of Texas, Houston, TX 77030, USA
| | - Andria C Schibler
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA.,Center for Cancer Epigenetics, University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA.,The University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA.,MD Anderson UTHealth Graduate School of Biomedical Sciences, University of Texas, Houston, TX 77030, USA.,Program in Genes and Development, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Hsueh-Ping Chao
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA.,Center for Cancer Epigenetics, University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA.,The University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA.,Program in Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.,MD Anderson UTHealth Graduate School of Biomedical Sciences, University of Texas, Houston, TX 77030, USA
| | - Xianghong Kuang
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA.,Center for Cancer Epigenetics, University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA.,The University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA
| | - Kevin Lin
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA.,Center for Cancer Epigenetics, University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA.,The University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA
| | - Yue Lu
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA.,Center for Cancer Epigenetics, University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA.,The University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA
| | - Jianjun Shen
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA.,Center for Cancer Epigenetics, University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA.,The University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA.,MD Anderson UTHealth Graduate School of Biomedical Sciences, University of Texas, Houston, TX 77030, USA
| | - Collene R Jeter
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA.,Center for Cancer Epigenetics, University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA.,The University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA
| | - Andrew Salinger
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA.,Center for Cancer Epigenetics, University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA.,The University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA
| | - Marenda Wilson
- The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Yi Chun Chen
- MD Anderson UTHealth Graduate School of Biomedical Sciences, University of Texas, Houston, TX 77030, USA.,Program in Genes and Development, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.,The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Boyko S Atanassov
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA.,Center for Cancer Epigenetics, University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA.,The University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA
| | - Dean G Tang
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA.,Center for Cancer Epigenetics, University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA.,The University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA
| | - Sharon Y R Dent
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA .,Center for Cancer Epigenetics, University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA.,The University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA.,MD Anderson UTHealth Graduate School of Biomedical Sciences, University of Texas, Houston, TX 77030, USA
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Vikkath N, Ariyannur P, Menon KN, Mr B, Pillai A. Exploring the role of defective fibronectin matrix assembly in the VHL-associated CNS hemangioblastoma. Drug Metab Pers Ther 2018; 33:127-134. [PMID: 29813026 DOI: 10.1515/dmpt-2018-0007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Accepted: 04/18/2018] [Indexed: 12/13/2022]
Abstract
AbstractBackground:Central nervous system (CNS) hemangioblastoma (HB) is the most common tumor in the von Hippel Lindau (VHL) disorder, the hereditary tumor syndrome caused by the biallelic mutations of theVHLgene. The disrupted VHL and Elongin protein interaction on hypoxia-inducible factor-1α (HIF-1α) induces a set of hypoxia-inducible genes, resulting in an unchecked endothelial cell proliferation that then leads to hemangioblastoma formation. However, recent studies have shown that disruptive germline mutations ofVHLneed not result in hemangioblastoma, though it can cause other manifestations of the VHL syndrome. Similarly, sporadic hemangioblastoma can occur rarely without a somatic biallelicVHLmutation. The VHL protein was earlier found to be associated with the deposition of matrix fibronectin (FN) protein in the renal extracellular matrix.Methods:The present study was designed to investigate the deposition of the matrix FN protein in VHL-associated hemangioblastoma.Results:Seven HB tumor samples from the VHL syndrome had lower expressions of tissue FN compared to the control cerebellum samples or the control blood vessel sample. On comparing the VHL and FN protein expressions in a timed endothelial tube assay, the VHL protein expression was absent during the initial phase of tube formation but started expressing after 6 h. The levels of matrix form of FN gradually increased along with the VHL expression during the maturation of tube formation. Tube formation was found to be enhanced with extraneously added soluble FN and inhibited by matrix FN. Similarly, tube formation was inhibited by a modified tripeptide (RGD) inhibitor of integrin (-αVβ3), namely, Cyclo-Ala-Arg-Gly-Asp-3-aminomethylbenzoyl.Conclusions:Our study implicates that the extracellular deposition and matrix formation of FN is important for vascular endothelial proliferation, and that its absence has roles in the development of hemangioblastoma in the VHL syndrome.
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Affiliation(s)
- Narendranath Vikkath
- Department of Neurosurgery, Research Associate, Amrita Vishwa Vidyapeetham, Amrita Institute of Medical Sciences and Research Centre, Kochi-41, Kerala, India,
| | - Prasanth Ariyannur
- Department of Biochemistry, Amrita School of Medicine, Amrita Vishwa Vidyapeetham, Amrita Institute of Medical Sciences and Research Centre, Kochi, Kerala, India
| | - Krishnakumar N Menon
- Amrita Center for Nanosciences and Molecular Medicine, Amrita Institute of Medical Sciences and Research Centre, Kochi, Kerala, India
| | - Bindhu Mr
- Department of Pathology, Amrita Institute of Medical Sciences and Research Centre, Kochi, Kerala, India
| | - Ashok Pillai
- Professor,Department of Neurosurgery, Amrita Institute of Medical Sciences and Research Centre, Kochi-41, Kerala, India
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25
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Alahari S, Garcia J, Post M, Caniggia I. The von Hippel Lindau tumour suppressor gene is a novel target of E2F4-mediated transcriptional repression in preeclampsia. Biochim Biophys Acta Mol Basis Dis 2018; 1864:3298-3308. [DOI: 10.1016/j.bbadis.2018.07.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 06/20/2018] [Accepted: 07/16/2018] [Indexed: 12/31/2022]
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26
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Adamson KI, Sheridan E, Grierson AJ. Use of zebrafish models to investigate rare human disease. J Med Genet 2018; 55:641-649. [PMID: 30065072 DOI: 10.1136/jmedgenet-2018-105358] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 07/02/2018] [Accepted: 07/04/2018] [Indexed: 01/07/2023]
Abstract
Rare diseases are collectively common and often extremely debilitating. Following the emergence of next-generation sequencing (NGS) technologies, the variants underpinning rare genetic disorders are being unearthed at an accelerating rate. However, many rare conditions lack effective treatments due to their poorly understood pathophysiology. There is therefore a growing demand for the development of novel experimental models of rare genetic diseases, so that potentially causative variants can be validated, pathogenic mechanisms can be investigated and therapeutic targets can be identified. Animal models of rare diseases need to be genetically and physiologically similar to humans, and well-suited to large-scale experimental manipulation, considering the vast number of novel variants that are being identified through NGS. The zebrafish has emerged as a popular model system for investigating these variants, combining conserved vertebrate characteristics with a capacity for large-scale phenotypic and therapeutic screening. In this review, we aim to highlight the unique advantages of the zebrafish over other in vivo model systems for the large-scale study of rare genetic variants. We will also consider the generation of zebrafish disease models from a practical standpoint, by discussing how genome editing technologies, particularly the recently developed clustered regularly interspaced repeat (CRISPR)/CRISPR-associated protein 9 system, can be used to model rare pathogenic variants in zebrafish. Finally, we will review examples in the literature where zebrafish models have played a pivotal role in confirming variant causality and revealing the underlying mechanisms of rare diseases, often with wider implications for our understanding of human biology.
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Affiliation(s)
- Kathryn Isabel Adamson
- Sheffield Institute for Translational Neuroscience, University of Sheffield, Sheffield, UK
| | | | - Andrew James Grierson
- Sheffield Institute for Translational Neuroscience, University of Sheffield, Sheffield, UK.,Department of Neuroscience, University of Sheffield, Sheffield, UK
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27
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Soares MJ, Iqbal K, Kozai K. Hypoxia and Placental Development. Birth Defects Res 2018; 109:1309-1329. [PMID: 29105383 DOI: 10.1002/bdr2.1135] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Accepted: 09/04/2017] [Indexed: 12/17/2022]
Abstract
Hemochorial placentation is orchestrated through highly regulated temporal and spatial decisions governing the fate of trophoblast stem/progenitor cells. Trophoblast cell acquisition of specializations facilitating invasion and uterine spiral artery remodeling is a labile process, sensitive to the environment, and represents a process that is vulnerable to dysmorphogenesis in pathologic states. Hypoxia is a signal guiding placental development, and molecular mechanisms directing cellular adaptations to low oxygen tension are integral to trophoblast cell differentiation and placentation. Hypoxia can also be used as an experimental tool to investigate regulatory processes controlling hemochorial placentation. These developmental processes are conserved in mouse, rat, and human placentation. Consequently, elements of these developmental events can be modeled and hypotheses tested in trophoblast stem cells and in genetically manipulated rodents. Hypoxia is also a consequence of a failed placenta, yielding pathologies that can adversely affect maternal adjustments to pregnancy, fetal health, and susceptibility to adult disease. The capacity of the placenta for adaptation to environmental challenges highlights the importance of its plasticity in safeguarding a healthy pregnancy. Birth Defects Research 109:1309-1329, 2017.© 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Michael J Soares
- Institute for Reproduction and Perinatal Research, Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, Kansas.,Department of Pediatrics, University of Kansas Medical Center, Kansas City, Kansas.,Fetal Health Research, Children's Research Institute, Children's Mercy, Kansas City, Missouri
| | - Khursheed Iqbal
- Institute for Reproduction and Perinatal Research, Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, Kansas
| | - Keisuke Kozai
- Institute for Reproduction and Perinatal Research, Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, Kansas
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28
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He Z, Xia L, Deng Z, Lian A, Hu Z, Li B. Identification of a VHL gene mutation in a Chinese family with Von Hippel‑Lindau syndrome. Mol Med Rep 2018; 18:435-440. [PMID: 29749453 DOI: 10.3892/mmr.2018.8974] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 04/16/2018] [Indexed: 11/05/2022] Open
Abstract
Von Hippel‑Lindau (VHL) syndrome is an autosomal dominant neoplastic disorder. The VHL tumor suppressor (VHL) gene has previously been identified to represent the causative gene of VHL. Previous studies have demonstrated that >506 different mutations in VHL are associated with VHL syndrome. The aim of the present study was to determine the VHL gene mutation present in a VHL syndrome pedigree and to investigate the pathogenesis of the mutant protein. Briefly, a family suffering from VHL syndrome in a Chinese Han population was recruited, and a missense mutation (c.345 C>A: p.H115Q) was revealed to be present within the VHL gene in the proband. Furthermore, Sanger sequencing revealed two carriers of the mutation within the family. The results of the present study also demonstrated a mutation in VHL associated with the VHL syndrome phenotype, which may be of future therapeutic benefit for the diagnosis of VHL syndrome. These results may also be relevant to further studies aiming to investigate the molecular pathogenesis of VHL syndrome.
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Affiliation(s)
- Zhengwen He
- Department of Neurosurgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya, School of Medicine, Central South University, Changsha, Hunan 410008, P.R. China
| | - Lu Xia
- Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan 410008, P.R. China
| | - Zhiyong Deng
- Department of Neurosurgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya, School of Medicine, Central South University, Changsha, Hunan 410008, P.R. China
| | - Aojie Lian
- Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan 410008, P.R. China
| | - Zhengmao Hu
- Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan 410008, P.R. China
| | - Bin Li
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
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29
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Serocki M, Bartoszewska S, Janaszak-Jasiecka A, Ochocka RJ, Collawn JF, Bartoszewski R. miRNAs regulate the HIF switch during hypoxia: a novel therapeutic target. Angiogenesis 2018; 21:183-202. [PMID: 29383635 PMCID: PMC5878208 DOI: 10.1007/s10456-018-9600-2] [Citation(s) in RCA: 175] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Accepted: 01/22/2018] [Indexed: 12/20/2022]
Abstract
The decline of oxygen tension in the tissues below the physiological demand leads to the hypoxic adaptive response. This physiological consequence enables cells to recover from this cellular insult. Understanding the cellular pathways that mediate recovery from hypoxia is therefore critical for developing novel therapeutic approaches for cardiovascular diseases and cancer. The master regulators of oxygen homeostasis that control angiogenesis during hypoxia are hypoxia-inducible factors (HIFs). HIF-1 and HIF-2 function as transcriptional regulators and have both unique and overlapping target genes, whereas the role of HIF-3 is less clear. HIF-1 governs the acute adaptation to hypoxia, whereas HIF-2 and HIF-3 expressions begin during chronic hypoxia in human endothelium. When HIF-1 levels decline, HIF-2 and HIF-3 increase. This switch from HIF-1 to HIF-2 and HIF-3 signaling is required in order to adapt the endothelium to prolonged hypoxia. During prolonged hypoxia, the HIF-1 levels and activity are reduced, despite the lack of oxygen-dependent protein degradation. Although numerous protein factors have been proposed to modulate the HIF pathways, their application for HIF-targeted therapy is rather limited. Recently, the miRNAs that endogenously regulate gene expression via the RNA interference (RNAi) pathway have been shown to play critical roles in the hypoxia response pathways. Furthermore, these classes of RNAs provide therapeutic possibilities to selectively target HIFs and thus modulate the HIF switch. Here, we review the significance of the microRNAs on the relationship between the HIFs under both physiological and pathophysiological conditions.
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Affiliation(s)
- Marcin Serocki
- Department of Biology and Pharmaceutical Botany, Medical University of Gdansk, Hallera 107, 80-416, Gdańsk, Poland
| | - Sylwia Bartoszewska
- Department of Inorganic Chemistry, Medical University of Gdansk, Gdańsk, Poland
| | - Anna Janaszak-Jasiecka
- Department of Biology and Pharmaceutical Botany, Medical University of Gdansk, Hallera 107, 80-416, Gdańsk, Poland
| | - Renata J Ochocka
- Department of Biology and Pharmaceutical Botany, Medical University of Gdansk, Hallera 107, 80-416, Gdańsk, Poland
| | - James F Collawn
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Rafał Bartoszewski
- Department of Biology and Pharmaceutical Botany, Medical University of Gdansk, Hallera 107, 80-416, Gdańsk, Poland.
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30
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Hou W, Ji Z. Generation of autochthonous mouse models of clear cell renal cell carcinoma: mouse models of renal cell carcinoma. Exp Mol Med 2018; 50:1-10. [PMID: 29651023 PMCID: PMC5938055 DOI: 10.1038/s12276-018-0059-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 10/10/2017] [Accepted: 10/10/2017] [Indexed: 01/05/2023] Open
Abstract
Renal cell carcinoma (RCC) is one of the 10 most common cancers worldwide, and to date, a strong systemic therapy has not been developed to treat RCC, even with the remarkable modern advances in molecular medicine mostly due to our incomplete understanding of its tumorigenesis. There is a dire unmet need to understand the etiology and progression of RCC, especially the most common subtype, clear cell RCC (ccRCC), and to develop new treatments for RCC. Genetically engineered mouse (GEM) models are able to mimic the initiation, progression, and metastasis of cancer, thus providing valuable insights into tumorigenesis and serving as perfect preclinical platforms for drug testing and biomarker discovery. Despite substantial advances in the molecular investigation of ccRCC and monumental efforts that have been performed to try to establish autochthonous animal models of ccRCC, this goal has not been achieved until recently. Here we present a review of the most exciting progress relevant to GEM models of ccRCC.
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Affiliation(s)
- Weibin Hou
- Department of Urology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, People's Republic of China
| | - Zhigang Ji
- Department of Urology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, People's Republic of China.
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31
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Alahari S, Post M, Rolfo A, Weksberg R, Caniggia I. Compromised JMJD6 Histone Demethylase Activity Affects VHL Gene Repression in Preeclampsia. J Clin Endocrinol Metab 2018; 103:1545-1557. [PMID: 29373688 DOI: 10.1210/jc.2017-02197] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 01/09/2018] [Indexed: 12/16/2022]
Abstract
CONTEXT The von Hippel Lindau (VHL) protein is a key executor of the cellular hypoxic response that is compromised in preeclampsia, a serious disorder complicating 5% to 7% of pregnancies. To date, the mechanisms controlling VHL gene expression in the human placenta remain elusive. OBJECTIVE We examined VHL epigenetic regulation in normal pregnancy and in preeclampsia, a pathology characterized by placental hypoxia. DESIGN, SETTING, AND PARTICIPANTS Placentae were obtained from early-onset preeclampsia (n = 56; <34 weeks of gestation) and late-onset preeclampsia (n = 19; ≥34 weeks of gestation). Placentae from healthy normotensive age-matched preterm control (n = 43) and term control (n = 23) pregnancies were included as controls. MAIN OUTCOME MEASURE(S) We measured the activity of Jumonji domain containing protein 6 (JMJD6), a ferrous iron (Fe2+)- and oxygen-dependent histone demethylase, and examined its function in the epigenetic control of VHL. RESULTS JMJD6 regulates VHL gene expression in the human placenta. VHL downregulation in preeclampsia is dependent on decreased JMJD6 demethylase activity due to hypoxia and reduced Fe2+ bioavailability. Chromatin immunoprecipitation assays revealed decreased association of JMJD6 and its histone targets with the VHL promoter. Findings in preeclampsia were corroborated in a murine model of pharmacological hypoxia using FG-4592. Placentae from FG-4592-treated mice exhibited reduced VHL levels, accompanied by placental morphological alterations and reduced pup weights. Notably, Fe2+ supplementation rescued JMJD6 histone demethylase activity in histone from E-PE and FG-4592-treated mice. CONCLUSIONS Our study uncovers epigenetic regulation of VHL and its functional consequences for altered oxygen and iron homeostasis in preeclampsia.
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Affiliation(s)
- Sruthi Alahari
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada
- Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Martin Post
- Department of Physiology, University of Toronto, Toronto, Ontario, Canada
- Program in Translational Medicine, Peter Gilgan Centre for Research and Learning, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Alessandro Rolfo
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Rosanna Weksberg
- Genetics & Genome Biology, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Isabella Caniggia
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada
- Department of Physiology, University of Toronto, Toronto, Ontario, Canada
- Department of Obstetrics and Gynecology, University of Toronto, Toronto, Ontario, Canada
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32
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Rodent models of pheochromocytoma, parallels in rodent and human tumorigenesis. Cell Tissue Res 2018; 372:379-392. [PMID: 29427052 DOI: 10.1007/s00441-018-2797-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Accepted: 01/16/2018] [Indexed: 12/17/2022]
Abstract
Paragangliomas and pheochromocytomas are rare neuroendocrine tumors characterized by a large spectrum of hereditary predisposition. Based on gene expression profiling classification, they can be classically assigned to either a hypoxic/angiogenic cluster (cluster 1 including tumors with mutations in SDHx, VHL and FH genes) or a kinase-signaling cluster (cluster 2 consisting in tumors related to RET, NF1, TMEM127 and MAX genes mutations, as well as most of the sporadic tumors). The past 15 years have seen the emergence of an increasing number of genetically engineered and grafted models to investigate tumorigenesis and develop new therapeutic strategies. Among them, only cluster 2-related predisposed models have been successful but grafted models are however available to study cluster 1-related tumors. In this review, we present an overview of existing rodent models targeting predisposition genes involved or not in human pheochromocytoma/paraganglioma susceptibility and their contribution to the improvement of pheochromocytoma experimental research.
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Bowser JL, Phan LH, Eltzschig HK. The Hypoxia-Adenosine Link during Intestinal Inflammation. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2018; 200:897-907. [PMID: 29358413 PMCID: PMC5784778 DOI: 10.4049/jimmunol.1701414] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Accepted: 11/28/2017] [Indexed: 12/14/2022]
Abstract
Intestinal inflammation is a key element in inflammatory bowel disease and is related to a combination of factors, including genetics, mucosal barrier dysfunction, bacteria translocation, deleterious host-microbe interactions, and dysregulated immune responses. Over the past decade, it has been appreciated that these inflammatory lesions are associated with profound tissue hypoxia. Interestingly, an endogenous adaptive response under the control of hypoxia signaling is enhancement in adenosine signaling, which impacts these different endpoints, including promoting barrier function and encouraging anti-inflammatory activity. In this review, we discuss the hypoxia-adenosine link in inflammatory bowel disease, intestinal ischemia/reperfusion injury, and colon cancer. In addition, we provide a summary of clinical implications of hypoxia and adenosine signaling in intestinal inflammation and disease.
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Affiliation(s)
- Jessica L Bowser
- Department of Anesthesiology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030
| | - Luan H Phan
- Department of Anesthesiology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030
| | - Holger K Eltzschig
- Department of Anesthesiology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030
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34
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Hypoxia Signaling and Placental Adaptations. Methods Mol Biol 2018. [PMID: 29330799 DOI: 10.1007/978-1-4939-7665-2_15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
Oxygen is an essential nutrient for cells. Oxygen is delivered to tissues via red blood cells through the vasculature. Molecular mechanisms mediating cellular responses to low oxygen tension have been identified. Hypoxia-inducible factors (HIFs) are activated by low oxygen and promote transcriptional regulation of downstream effector genes, which lead to cellular adaptations. Controlled hypoxia exposure is utilized as an experimental tool to investigate biological processes, regulating cellular adaptations. Here we describe detailed protocols for hypoxia exposure of pregnant rodent models and low oxygen exposure of trophoblast stem cells, utilizing gas-regulated chamber systems. The presentation also includes phenotypic analyses of the manipulated animal models and cells.
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35
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Cerychova R, Pavlinkova G. HIF-1, Metabolism, and Diabetes in the Embryonic and Adult Heart. Front Endocrinol (Lausanne) 2018; 9:460. [PMID: 30158902 PMCID: PMC6104135 DOI: 10.3389/fendo.2018.00460] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Accepted: 07/26/2018] [Indexed: 12/12/2022] Open
Abstract
The heart is able to metabolize any substrate, depending on its availability, to satisfy its energy requirements. Under normal physiological conditions, about 95% of ATP is produced by oxidative phosphorylation and the rest by glycolysis. Cardiac metabolism undergoes reprograming in response to a variety of physiological and pathophysiological conditions. Hypoxia-inducible factor 1 (HIF-1) mediates the metabolic adaptation to hypoxia and ischemia, including the transition from oxidative to glycolytic metabolism. During embryonic development, HIF-1 protects the embryo from intrauterine hypoxia, its deletion as well as its forced expression are embryonically lethal. A decrease in HIF-1 activity is crucial during perinatal remodeling when the heart switches from anaerobic to aerobic metabolism. In the adult heart, HIF-1 protects against hypoxia, although its deletion in cardiomyocytes affects heart function even under normoxic conditions. Diabetes impairs HIF-1 activation and thus, compromises HIF-1 mediated responses under oxygen-limited conditions. Compromised HIF-1 signaling may contribute to the teratogenicity of maternal diabetes and diabetic cardiomyopathy in adults. In this review, we discuss the function of HIF-1 in the heart throughout development into adulthood, as well as the deregulation of HIF-1 signaling in diabetes and its effects on the embryonic and adult heart.
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Affiliation(s)
- Radka Cerychova
- Laboratory of Molecular Pathogenetics, Institute of Biotechnology of the Czech Academy of Sciences, Prague, Czechia
- Faculty of Science, Charles University, Prague, Czechia
| | - Gabriela Pavlinkova
- Laboratory of Molecular Pathogenetics, Institute of Biotechnology of the Czech Academy of Sciences, Prague, Czechia
- *Correspondence: Gabriela Pavlinkova
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Kim E, Zschiedrich S. Renal Cell Carcinoma in von Hippel-Lindau Disease-From Tumor Genetics to Novel Therapeutic Strategies. Front Pediatr 2018; 6:16. [PMID: 29479523 PMCID: PMC5811471 DOI: 10.3389/fped.2018.00016] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Accepted: 01/16/2018] [Indexed: 01/05/2023] Open
Abstract
von Hippel-Lindau (VHL) disease is an autosomal dominant syndrome caused by mutations in the VHL tumor-suppressor gene, leading to the dysregulation of many hypoxia-induced genes. Affected individuals are at increased risk of developing recurrent and bilateral kidney cysts and dysplastic lesions which may progress to clear cell renal cell carcinoma (ccRCC). Following the eponymous VHL gene inactivation, ccRCCs evolve through additional genetic alterations, resulting in both intratumor and intertumor heterogeneity. Genomic studies have identified frequent mutations in genes involved in epigenetic regulation and phosphoinositide 3-kinase-AKT-mechanistic target of rapamycin (mTOR) pathway activation. Currently, local therapeutic options include nephron-sparing surgery and alternative ablative procedures. For advanced metastatic disease, systemic treatment, including inhibition of vascular endothelial growth factor pathways and mTOR pathways, as well as immunotherapy are available. Multimodal therapy, targeting multiple signaling pathways and/or enhancing the immune response, is currently being investigated. A deeper understanding of the fundamental biology of ccRCC development and progression, as well as the development of novel and targeted therapies will be accelerated by new preclinical models, which will greatly inform the search for clinical biomarkers for diagnosis, prognosis, and response to treatment.
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Affiliation(s)
- Emily Kim
- Department of Radiation Oncology, Faculty of Medicine, Albert Ludwigs University of Freiburg, Freiburg, Germany.,German Cancer Consortium (DKTK), Partner Site Freiburg, Freiburg, Germany
| | - Stefan Zschiedrich
- Renal Division, Department of Medicine IV, Faculty of Medicine, Albert Ludwigs University of Freiburg, Freiburg, Germany
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Enhanced HIF2α expression during human trophoblast differentiation into syncytiotrophoblast suppresses transcription of placental growth factor. Sci Rep 2017; 7:12455. [PMID: 28963486 PMCID: PMC5622029 DOI: 10.1038/s41598-017-12685-w] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Accepted: 09/14/2017] [Indexed: 12/21/2022] Open
Abstract
Placental growth factor (PlGF), abundantly produced from trophoblasts is involved in placental angiogenesis. The regulatory mechanism of its expression is poorly understood. Hypoxia inducible factors (HIFs) are centrally involved in the modulation of cellular function in response to low oxygen conditions. This study aimed to clarify HIF1α and HIF2α expression patterns during cytotrophoblast differentiation into syncytiotrophoblast and the impact of any changes on PlGF expression. HIF proteins were induced remarkably under low oxygen condition (2%). HIF1α expression decreased and HIF2α expression increased when syncytialization of cultured cytotrophoblasts is progressed. Those expression changes of HIF proteins in the process of in-vitro syncytialization was congruent with the immunohistochemical findings in preeclamptic placenta as well as uncomplicated placenta. Low oxygen condition was also associated with reduced PlGF production in syncytializing primary cells and BeWo choriocarcinoma cells. Small interfering RNA-mediated HIF2α knockdown in BeWo cells abrogated hypoxia-associated decreases in PlGF secretion; HIF1α silencing had no significant effect on PlGF secretion. In summary, HIF2α, rather than HIF1α, is most affected by reduced oxygen level during syncytialization and increases in HIF2α trigger a reduction of PlGF production. Our findings suggest new and important connections between HIF proteins and PlGF pathways in the regulation of placental angiogenesis.
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38
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Wang Y, Chen DQ, Chen MY, Ji KY, Ma DX, Zhou LF. Endothelial cells by inactivation of VHL gene direct angiogenesis, not vasculogenesis via Twist1 accumulation associated with hemangioblastoma neovascularization. Sci Rep 2017; 7:5463. [PMID: 28710479 PMCID: PMC5511164 DOI: 10.1038/s41598-017-05833-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Accepted: 06/05/2017] [Indexed: 12/28/2022] Open
Abstract
Inactivation of the VHL tumour suppressor gene is a highly frequent genetic event in the carcinogenesis of central nervous system-(CNS) hemangioblastomas (HBs). The patterning of the similar embryonic vasculogenesis is an increasing concern in HB-neovascularization, and the classic vascular endothelial growth factor (VEGF)-mediated angiogenesis driven by VHL loss-of-function from human endothelium have been questioned. With this regard, we identify a distinct, VHL silencing-driven mechanism in which human vascular endothelial cells by means of increasing cell proliferation and decreasing cell apoptosis, is concomitant with facilitating accumulation of Twist1 protein in vascular endothelial cells in vitro. Importantly, this molecular mechanism is also pinpointed in CNS-HBs, and associated with the process of HB-neovascularization. In contrast with recent studies of HB-neovascularization, these modified cells did not endow with the typical features of vasculogenesis, indicating that this is a common angiogenesis implementing the formation of the vascular network. Taken together, these findings suggest that vasculogenesis and angiogenesis may constitute complementary mechanisms for HB-neovascularization, and could provide a rational recognition of single anti-angiogenic intervention including targeting to the Twist1 signalling for HBs.
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Affiliation(s)
- Ying Wang
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Dan-Qi Chen
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Ming-Yu Chen
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Kai-Yuan Ji
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - De-Xuan Ma
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, 200040, China.
| | - Liang-Fu Zhou
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, 200040, China.
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Wang Y, Yang J, Du G, Ma D, Zhou L. Neuroprotective effects respond to cerebral ischemia without susceptibility to HB-tumorigenesis in VHL heterozygous knockout mice. Mol Carcinog 2017; 56:2342-2351. [PMID: 28574654 DOI: 10.1002/mc.22688] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 05/04/2017] [Accepted: 06/01/2017] [Indexed: 12/18/2022]
Abstract
The von Hippel-Lindau (VHL) tumor suppressor gene plays a prominent role in the development of hemangioblastomas (HBs) within specific regions of the human' central nervous system (CNS). Alterations in VHL gene are rarely observed in the more common features of human VHL-related tumors in animal models, and VHL heterozygous knockout (VHL+/-) mice do not develop HBs. We tested whether VHL heterozygous knockout mice exhibited genetic predisposition to the development of HBs and conferred a selective advantage involving growth of blood vessels to its carrier. No differences were observed between wild-type and VHL+/- mice in development ad reproduction. The heterozygous VHL+/- mice did not develop higher genetic susceptibility to CNS-HBs over their lifetime. Furthermore, this recessive VHL gene heterozygosity is relatively stable. Interestingly, we found these heterozygous VHL+/- mice gained an advantage conferring to angiogenic ability in a particular environment, compared with wild-type mice. The heterozygous VHL+/- mice obviously enhanced hypoxia inducible factor-1 (HIF)-dependent and Twist1 angiogenic mechanism in response to acute cerebral ischemia, resulting in decreased cerebral tissue damage and neuroprotective response through neovascularization. Our findings provide evidence of partial loss function of VHL as a novel precise therapeutic target in acute cerebral ischemia.
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Affiliation(s)
- Ying Wang
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Jingyun Yang
- Rush Alzheimer's Disease Center & Department of Neurological Sciences, Rush University Medical Center, Chicago, Illinois
| | - Guhong Du
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Dexuan Ma
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Liangfu Zhou
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China
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Li G, Xu C, Lin X, Qu L, Xia D, Hongdu B, Xia Y, Wang X, Lou Y, He Q, Ma D, Chen Y. Deletion of Pdcd5 in mice led to the deficiency of placenta development and embryonic lethality. Cell Death Dis 2017; 8:e2811. [PMID: 28542142 PMCID: PMC5520688 DOI: 10.1038/cddis.2017.124] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 02/23/2017] [Accepted: 02/23/2017] [Indexed: 12/31/2022]
Abstract
Programmed cell death 5 (PDCD5) is an apoptosis promoter molecule that displays multiple biological activities. However, the function of PDCD5 in vivo has not yet been investigated. Here, we generated a Pdcd5 knockout mouse model to study the physiological role of PDCD5 in vivo. Knockout of the Pdcd5 gene resulted in embryonic lethality at mid-gestation. Histopathological analysis revealed dysplasia in both the LZs and JZs in Pdcd5–/– placentas with defects in spongiotrophoblasts and trophoblast giant cells. Furthermore, Pdcd5–/– embryos had impaired transplacental passage capacity. We also found that Pdcd5–/– embryos exhibited cardiac abnormalities and defective liver development. The growth defect is linked to impaired placental development and may be caused by insufficient oxygen and nutrient transfer across the placenta. These findings were verified in vitro in Pdcd5 knockout mouse embryonic fibroblasts, which showed increased apoptosis and G0/G1 phase cell cycle arrest. Pdcd5 knockout decreased the Vegf and hepatocyte growth factor (Hgf) levels, downregulated the downstream Pik3ca–Akt–Mtor signal pathway and decreased cell survival. Collectively, our studies demonstrated that Pdcd5 knockout in mouse embryos results in placental defects and embryonic lethality.
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Affiliation(s)
- Ge Li
- Department of Immunology, Peking University School of Basic Medical Science, No. 38 Xueyuan Road, Beijing 100191, China.,Key Laboratory of Medical Immunology, Ministry of Health, Peking University Health Sciences Center, No. 38 Xueyuan Road, Beijing 100191, China.,The Clinical Laboratory, Affiliated Hospital of Inner Mongolia Medical University, No. 1 Tongdao North Street, Hohhot, Inner Mongolia 010050, China.,Center for Human Disease Genomics, Peking University, No. 38 Xueyuan Road, Beijing 100191, China
| | - Chentong Xu
- Department of Immunology, Peking University School of Basic Medical Science, No. 38 Xueyuan Road, Beijing 100191, China.,Key Laboratory of Medical Immunology, Ministry of Health, Peking University Health Sciences Center, No. 38 Xueyuan Road, Beijing 100191, China.,Center for Human Disease Genomics, Peking University, No. 38 Xueyuan Road, Beijing 100191, China
| | - Xin Lin
- Department of Immunology, Peking University School of Basic Medical Science, No. 38 Xueyuan Road, Beijing 100191, China.,Key Laboratory of Medical Immunology, Ministry of Health, Peking University Health Sciences Center, No. 38 Xueyuan Road, Beijing 100191, China.,Center for Human Disease Genomics, Peking University, No. 38 Xueyuan Road, Beijing 100191, China
| | - Liujing Qu
- Department of Immunology, Peking University School of Basic Medical Science, No. 38 Xueyuan Road, Beijing 100191, China.,Key Laboratory of Medical Immunology, Ministry of Health, Peking University Health Sciences Center, No. 38 Xueyuan Road, Beijing 100191, China.,Center for Human Disease Genomics, Peking University, No. 38 Xueyuan Road, Beijing 100191, China
| | - Dan Xia
- Department of Immunology, Peking University School of Basic Medical Science, No. 38 Xueyuan Road, Beijing 100191, China.,Key Laboratory of Medical Immunology, Ministry of Health, Peking University Health Sciences Center, No. 38 Xueyuan Road, Beijing 100191, China.,Center for Human Disease Genomics, Peking University, No. 38 Xueyuan Road, Beijing 100191, China
| | - Beiqi Hongdu
- Department of Immunology, Peking University School of Basic Medical Science, No. 38 Xueyuan Road, Beijing 100191, China.,Key Laboratory of Medical Immunology, Ministry of Health, Peking University Health Sciences Center, No. 38 Xueyuan Road, Beijing 100191, China.,Center for Human Disease Genomics, Peking University, No. 38 Xueyuan Road, Beijing 100191, China
| | - Yan Xia
- Department of Immunology, Peking University School of Basic Medical Science, No. 38 Xueyuan Road, Beijing 100191, China.,Key Laboratory of Medical Immunology, Ministry of Health, Peking University Health Sciences Center, No. 38 Xueyuan Road, Beijing 100191, China.,Center for Human Disease Genomics, Peking University, No. 38 Xueyuan Road, Beijing 100191, China
| | - Xiaokun Wang
- Center for Human Disease Genomics, Peking University, No. 38 Xueyuan Road, Beijing 100191, China
| | - Yaxin Lou
- Medical and Healthy Analytical Center, Peking University, No. 38 Xueyuan Road, Beijing 100191, China
| | - Qihua He
- Medical and Healthy Analytical Center, Peking University, No. 38 Xueyuan Road, Beijing 100191, China
| | - Dalong Ma
- Department of Immunology, Peking University School of Basic Medical Science, No. 38 Xueyuan Road, Beijing 100191, China.,Key Laboratory of Medical Immunology, Ministry of Health, Peking University Health Sciences Center, No. 38 Xueyuan Road, Beijing 100191, China.,Center for Human Disease Genomics, Peking University, No. 38 Xueyuan Road, Beijing 100191, China
| | - Yingyu Chen
- Department of Immunology, Peking University School of Basic Medical Science, No. 38 Xueyuan Road, Beijing 100191, China.,Key Laboratory of Medical Immunology, Ministry of Health, Peking University Health Sciences Center, No. 38 Xueyuan Road, Beijing 100191, China.,Center for Human Disease Genomics, Peking University, No. 38 Xueyuan Road, Beijing 100191, China
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41
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Gu YF, Cohn S, Christie A, McKenzie T, Wolff N, Do QN, Madhuranthakam AJ, Pedrosa I, Wang T, Dey A, Busslinger M, Xie XJ, Hammer RE, McKay RM, Kapur P, Brugarolas J. Modeling Renal Cell Carcinoma in Mice: Bap1 and Pbrm1 Inactivation Drive Tumor Grade. Cancer Discov 2017; 7:900-917. [PMID: 28473526 DOI: 10.1158/2159-8290.cd-17-0292] [Citation(s) in RCA: 118] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 04/29/2017] [Accepted: 05/02/2017] [Indexed: 12/22/2022]
Abstract
Clear cell renal cell carcinoma (ccRCC) is characterized by BAP1 and PBRM1 mutations, which are associated with tumors of different grade and prognosis. However, whether BAP1 and PBRM1 loss causes ccRCC and determines tumor grade is unclear. We conditionally targeted Bap1 and Pbrm1 (with Vhl) in the mouse using several Cre drivers. Sglt2 and Villin proximal convoluted tubule drivers failed to cause tumorigenesis, challenging the conventional notion of ccRCC origins. In contrast, targeting with PAX8, a transcription factor frequently overexpressed in ccRCC, led to ccRCC of different grades. Bap1-deficient tumors were of high grade and showed greater mTORC1 activation than Pbrm1-deficient tumors, which exhibited longer latency. Disrupting one allele of the mTORC1 negative regulator, Tsc1, in Pbrm1-deficient kidneys triggered higher grade ccRCC. This study establishes Bap1 and Pbrm1 as lineage-specific drivers of ccRCC and histologic grade, implicates mTORC1 as a tumor grade rheostat, and suggests that ccRCCs arise from Bowman capsule cells.Significance: Determinants of tumor grade and aggressiveness across cancer types are poorly understood. Using ccRCC as a model, we show that Bap1 and Pbrm1 loss drives tumor grade. Furthermore, we show that the conversion from low grade to high grade can be promoted by activation of mTORC1. Cancer Discov; 7(8); 900-17. ©2017 AACR.See related commentary by Leung and Kim, p. 802This article is highlighted in the In This Issue feature, p. 783.
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Affiliation(s)
- Yi-Feng Gu
- Department of Internal Medicine, Hematology-Oncology Division, The University of Texas Southwestern Medical Center, Dallas, Texas.,Kidney Cancer Program, Simmons Comprehensive Cancer Center, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Shannon Cohn
- Department of Internal Medicine, Hematology-Oncology Division, The University of Texas Southwestern Medical Center, Dallas, Texas.,Kidney Cancer Program, Simmons Comprehensive Cancer Center, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Alana Christie
- Kidney Cancer Program, Simmons Comprehensive Cancer Center, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Tiffani McKenzie
- Kidney Cancer Program, Simmons Comprehensive Cancer Center, The University of Texas Southwestern Medical Center, Dallas, Texas.,Department of Pathology, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Nicholas Wolff
- Department of Internal Medicine, Hematology-Oncology Division, The University of Texas Southwestern Medical Center, Dallas, Texas.,Kidney Cancer Program, Simmons Comprehensive Cancer Center, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Quyen N Do
- Department of Radiology and the Advanced Imaging Research Center, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Ananth J Madhuranthakam
- Department of Radiology and the Advanced Imaging Research Center, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Ivan Pedrosa
- Kidney Cancer Program, Simmons Comprehensive Cancer Center, The University of Texas Southwestern Medical Center, Dallas, Texas.,Department of Radiology and the Advanced Imaging Research Center, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Tao Wang
- Kidney Cancer Program, Simmons Comprehensive Cancer Center, The University of Texas Southwestern Medical Center, Dallas, Texas.,Quantitative Biomedical Research Center, Department of Clinical Sciences, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Anwesha Dey
- Department of Molecular Oncology, Genentech, South San Francisco, California
| | | | - Xian-Jin Xie
- Kidney Cancer Program, Simmons Comprehensive Cancer Center, The University of Texas Southwestern Medical Center, Dallas, Texas.,Department of Clinical Sciences, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Robert E Hammer
- Department of Biochemistry, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Renée M McKay
- Department of Internal Medicine, Hematology-Oncology Division, The University of Texas Southwestern Medical Center, Dallas, Texas.,Kidney Cancer Program, Simmons Comprehensive Cancer Center, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Payal Kapur
- Kidney Cancer Program, Simmons Comprehensive Cancer Center, The University of Texas Southwestern Medical Center, Dallas, Texas. .,Department of Pathology, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - James Brugarolas
- Department of Internal Medicine, Hematology-Oncology Division, The University of Texas Southwestern Medical Center, Dallas, Texas. .,Kidney Cancer Program, Simmons Comprehensive Cancer Center, The University of Texas Southwestern Medical Center, Dallas, Texas
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42
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Abstract
In this review we note that the placenta and cancer both develop in microenvironments in which there are gradients of oxygen availability. Whilst fundamentally different in that placental development is organised and physiological whilst cancer is chaotic and pathological, there are similarities in their respective capacities to proliferate, invade adjacent tissues, generate a blood supply and avoid rejection by the immune system. We provide a brief description of the hypoxia-inducible factor (HIF) pathway and indicate the ways by which HIF activity can be regulated to achieve oxygen homeostasis. We then exemplify the potential role of the HIF pathway in contributing to those functions shared between the placenta and cancer through effects on cellular proliferation, cell death, angiogenesis, blood vessel co-option, vascular mimicry, cell adhesion molecules, secretion of matrix metalloproteinases, antigen presentation mechanisms and immunosuppressive factors. We advocate future studies to explore these similarities and differences in the hope of improving our understanding of both systems and hence treatments of placental disorders and cancer.
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43
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Cho H, Kaelin WG. Targeting HIF2 in Clear Cell Renal Cell Carcinoma. COLD SPRING HARBOR SYMPOSIA ON QUANTITATIVE BIOLOGY 2016; 81:113-121. [PMID: 27932568 DOI: 10.1101/sqb.2016.81.030833] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Inactivation of the von Hippel-Lindau tumor-suppressor protein (pVHL) is the signature "truncal" event in clear cell renal cell carcinoma, which is the most common form of kidney cancer. pVHL is part of a ubiquitin ligase the targets the α subunit of the hypoxia-inducible factor (HIF) transcription factor for destruction when oxygen is available. Preclinical studies strongly suggest that deregulation of HIF, and particularly HIF2, drives pVHL-defective renal carcinogenesis. Although HIF2α was classically considered undruggable, structural and chemical work by Rick Bruick and Kevin Gardner at University of Texas Southwestern laid the foundation for the development of small molecule direct HIF2α antagonists (PT2385 and the related tool compound PT2399) by Peloton Therapeutics that block the dimerization of HIF2α with its partner protein ARNT1. These compounds inhibit clear cell renal cell carcinoma growth in preclinical models, and PT2385 has now entered the clinic. Nonetheless, the availability of such compounds, together with clustered regularly interspaced short palindromic repeat (CRISPR)-based gene editing approaches, has revealed a previously unappreciated heterogeneity among clear cell renal carcinomas and patient-derived xenografts with respect to HIF2 dependence, suggesting that predictive biomarkers will be needed to optimize the use of such agents in the clinic.
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Affiliation(s)
- Hyejin Cho
- Howard Hughes Medical Institute, Dana-Farber Cancer Institute and Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 022145
| | - William G Kaelin
- Howard Hughes Medical Institute, Dana-Farber Cancer Institute and Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 022145
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44
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Frost J, Galdeano C, Soares P, Gadd MS, Grzes KM, Ellis L, Epemolu O, Shimamura S, Bantscheff M, Grandi P, Read KD, Cantrell DA, Rocha S, Ciulli A. Potent and selective chemical probe of hypoxic signalling downstream of HIF-α hydroxylation via VHL inhibition. Nat Commun 2016; 7:13312. [PMID: 27811928 PMCID: PMC5097156 DOI: 10.1038/ncomms13312] [Citation(s) in RCA: 150] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Accepted: 09/22/2016] [Indexed: 12/20/2022] Open
Abstract
Chemical strategies to using small molecules to stimulate hypoxia inducible factors (HIFs) activity and trigger a hypoxic response under normoxic conditions, such as iron chelators and inhibitors of prolyl hydroxylase domain (PHD) enzymes, have broad-spectrum activities and off-target effects. Here we disclose VH298, a potent VHL inhibitor that stabilizes HIF-α and elicits a hypoxic response via a different mechanism, that is the blockade of the VHL:HIF-α protein-protein interaction downstream of HIF-α hydroxylation by PHD enzymes. We show that VH298 engages with high affinity and specificity with VHL as its only major cellular target, leading to selective on-target accumulation of hydroxylated HIF-α in a concentration- and time-dependent fashion in different cell lines, with subsequent upregulation of HIF-target genes at both mRNA and protein levels. VH298 represents a high-quality chemical probe of the HIF signalling cascade and an attractive starting point to the development of potential new therapeutics targeting hypoxia signalling.
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Affiliation(s)
- Julianty Frost
- Division of Biological Chemistry and Drug Discovery, School of Life Sciences, University of Dundee, Dow Street, Dundee DD1 5EH, Scotland, UK
| | - Carles Galdeano
- Division of Biological Chemistry and Drug Discovery, School of Life Sciences, University of Dundee, Dow Street, Dundee DD1 5EH, Scotland, UK
| | - Pedro Soares
- Division of Biological Chemistry and Drug Discovery, School of Life Sciences, University of Dundee, Dow Street, Dundee DD1 5EH, Scotland, UK
| | - Morgan S. Gadd
- Division of Biological Chemistry and Drug Discovery, School of Life Sciences, University of Dundee, Dow Street, Dundee DD1 5EH, Scotland, UK
| | - Katarzyna M. Grzes
- Division of Cell Signaling and Immunology, School of Life Sciences, University of Dundee, Dow Street, Dundee DD1 5EH, Scotland, UK
| | - Lucy Ellis
- Division of Biological Chemistry and Drug Discovery, School of Life Sciences, University of Dundee, Dow Street, Dundee DD1 5EH, Scotland, UK
| | - Ola Epemolu
- Division of Biological Chemistry and Drug Discovery, School of Life Sciences, University of Dundee, Dow Street, Dundee DD1 5EH, Scotland, UK
| | | | | | - Paola Grandi
- Cellzome GmbH, Meyerhofstrasse 1, 69117 Heidelberg, Germany
| | - Kevin D. Read
- Division of Biological Chemistry and Drug Discovery, School of Life Sciences, University of Dundee, Dow Street, Dundee DD1 5EH, Scotland, UK
| | - Doreen A. Cantrell
- Division of Cell Signaling and Immunology, School of Life Sciences, University of Dundee, Dow Street, Dundee DD1 5EH, Scotland, UK
| | - Sonia Rocha
- Center for Gene Regulation and Expression, School of Life Sciences, University of Dundee, Dow Street, Dundee DD1 5EH, Scotland, UK
| | - Alessio Ciulli
- Division of Biological Chemistry and Drug Discovery, School of Life Sciences, University of Dundee, Dow Street, Dundee DD1 5EH, Scotland, UK
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HIF-KDM3A-MMP12 regulatory circuit ensures trophoblast plasticity and placental adaptations to hypoxia. Proc Natl Acad Sci U S A 2016; 113:E7212-E7221. [PMID: 27807143 DOI: 10.1073/pnas.1612626113] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The hemochorial placenta develops from the coordinated multilineage differentiation of trophoblast stem (TS) cells. An invasive trophoblast cell lineage remodels uterine spiral arteries, facilitating nutrient flow, failure of which is associated with pathological conditions such as preeclampsia, intrauterine growth restriction, and preterm birth. Hypoxia plays an instructive role in influencing trophoblast cell differentiation and regulating placental organization. Key downstream hypoxia-activated events were delineated using rat TS cells and tested in vivo, using trophoblast-specific lentiviral gene delivery and genome editing. DNA microarray analyses performed on rat TS cells exposed to ambient or low oxygen and pregnant rats exposed to ambient or hypoxic conditions showed up-regulation of genes characteristic of an invasive/vascular remodeling/inflammatory phenotype. Among the shared up-regulated genes was matrix metallopeptidase 12 (MMP12). To explore the functional importance of MMP12 in trophoblast cell-directed spiral artery remodeling, we generated an Mmp12 mutant rat model using transcription activator-like nucleases-mediated genome editing. Homozygous mutant placentation sites showed decreased hypoxia-dependent endovascular trophoblast invasion and impaired trophoblast-directed spiral artery remodeling. A link was established between hypoxia/HIF and MMP12; however, evidence did not support Mmp12 as a direct target of HIF action. Lysine demethylase 3A (KDM3A) was identified as mediator of hypoxia/HIF regulation of Mmp12 Knockdown of KDM3A in rat TS cells inhibited the expression of a subset of the hypoxia-hypoxia inducible factor (HIF)-dependent transcripts, including Mmp12, altered H3K9 methylation status, and decreased hypoxia-induced trophoblast cell invasion in vitro and in vivo. The hypoxia-HIF-KDM3A-MMP12 regulatory circuit is conserved and facilitates placental adaptations to environmental challenges.
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46
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Zurlo G, Guo J, Takada M, Wei W, Zhang Q. New Insights into Protein Hydroxylation and Its Important Role in Human Diseases. Biochim Biophys Acta Rev Cancer 2016; 1866:208-220. [PMID: 27663420 DOI: 10.1016/j.bbcan.2016.09.004] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 09/15/2016] [Accepted: 09/17/2016] [Indexed: 12/26/2022]
Abstract
Protein hydroxylation is a post-translational modification catalyzed by 2-oxoglutarate-dependent dioxygenases. The hydroxylation modification can take place on various amino acids, including but not limited to proline, lysine, asparagine, aspartate and histidine. A classical example of this modification is hypoxia inducible factor alpha (HIF-α) prolyl hydroxylation, which affects HIF-α protein stability via the Von-Hippel Lindau (VHL) tumor suppressor pathway, a Cullin 2-based E3 ligase adaptor protein frequently mutated in kidney cancer. In addition to protein stability regulation, protein hydroxylation may influence other post-translational modifications or the kinase activity of the modified protein (such as Akt and DYRK1A/B). In other cases, protein hydroxylation may alter protein-protein interaction and its downstream signaling events in vivo (such as OTUB1, MAPK6 and eEF2K). In this review, we highlight the recently identified protein hydroxylation targets and their pathophysiological roles, especially in cancer settings. Better understanding of protein hydroxylation will help identify novel therapeutic targets and their regulation mechanisms to foster development of more effective treatment strategies for various human cancers.
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Affiliation(s)
- Giada Zurlo
- Lineberger Comprehensive Cancer Center, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA
| | - Jianping Guo
- Department of Pathology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA 02215, USA
| | - Mamoru Takada
- Lineberger Comprehensive Cancer Center, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA
| | - Wenyi Wei
- Department of Pathology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA 02215, USA.
| | - Qing Zhang
- Lineberger Comprehensive Cancer Center, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA; Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, NC 27599, USA.
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47
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Johansson E, Rönö B, Johansson M, Lindgren D, Möller C, Axelson H, Smith EMK. Simultaneous targeted activation of Notch1 and Vhl-disruption in the kidney proximal epithelial tubular cells in mice. Sci Rep 2016; 6:30739. [PMID: 27491826 PMCID: PMC4974510 DOI: 10.1038/srep30739] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 07/07/2016] [Indexed: 01/01/2023] Open
Abstract
Clear cell renal cell carcinoma (ccRCC) is the most common subtype of kidney cancer, representing approximately 75% of all renal neoplasms. ccRCC is known to be strongly associated with silencing of the von Hippel Lindau (VHL) tumor suppressor gene, yet VHL deficiency alone does not seem to be sufficient to drive the oncogenic transformation of normal renal epithelium and induce renal tumorigenesis. We, and others, have previously suggested that constitutive activation of the Notch signaling pathway, alongside with VHL loss, contribute to the oncogenic features of ccRCC. Here we report a prevailing hyperactivation of the Notch1 receptor in human ccRCC relative to the healthy counterpart. To explore the consequences of the elevated Notch1 signaling observed in ccRCC patient material, we made use of a conditional mouse model based on concurrent ectopic expression of constitutively active Notch1 (NICD1) and deletion of the Vhl gene. Histological examination of the kidneys of the conditional mice demonstrate the existence of nests of dysplastic cells with a clear cytoplasm as a consequence of lipid accumulation, thus displaying a one important hallmark of human ccRCC.
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Affiliation(s)
- Elinn Johansson
- Division of Translational Cancer Research, Department of Laboratory Medicine, Medicon Village, Building 404 A3, Scheelevägen 8, 404A3, 223 63 Lund, Sweden
| | - Birgitte Rönö
- Division of Translational Cancer Research, Department of Laboratory Medicine, Medicon Village, Building 404 A3, Scheelevägen 8, 404A3, 223 63 Lund, Sweden
| | - Martin Johansson
- Center for Molecular Pathology, Department of Translational Medicine, Skåne University Hospital, 205 02 Malmö, Sweden
| | - David Lindgren
- Division of Translational Cancer Research, Department of Laboratory Medicine, Medicon Village, Building 404 A3, Scheelevägen 8, 404A3, 223 63 Lund, Sweden
| | - Christina Möller
- Division of Translational Cancer Research, Department of Laboratory Medicine, Medicon Village, Building 404 A3, Scheelevägen 8, 404A3, 223 63 Lund, Sweden
| | - Håkan Axelson
- Division of Translational Cancer Research, Department of Laboratory Medicine, Medicon Village, Building 404 A3, Scheelevägen 8, 404A3, 223 63 Lund, Sweden
| | - Emma M K Smith
- Division of Translational Cancer Research, Department of Laboratory Medicine, Medicon Village, Building 404 A3, Scheelevägen 8, 404A3, 223 63 Lund, Sweden
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48
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Schokrpur S, Hu J, Moughon DL, Liu P, Lin LC, Hermann K, Mangul S, Guan W, Pellegrini M, Xu H, Wu L. CRISPR-Mediated VHL Knockout Generates an Improved Model for Metastatic Renal Cell Carcinoma. Sci Rep 2016; 6:29032. [PMID: 27358011 PMCID: PMC4928183 DOI: 10.1038/srep29032] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Accepted: 06/14/2016] [Indexed: 12/15/2022] Open
Abstract
Metastatic renal cell carcinoma (mRCC) is nearly incurable and accounts for most of the mortality associated with RCC. Von Hippel Lindau (VHL) is a tumour suppressor that is lost in the majority of clear cell RCC (ccRCC) cases. Its role in regulating hypoxia-inducible factors-1α (HIF-1α) and -2α (HIF-2α) is well-studied. Recent work has demonstrated that VHL knock down induces an epithelial-mesenchymal transition (EMT) phenotype. In this study we showed that a CRISPR/Cas9-mediated knock out of VHL in the RENCA model leads to morphologic and molecular changes indicative of EMT, which in turn drives increased metastasis to the lungs. RENCA cells deficient in HIF-1α failed to undergo EMT changes upon VHL knockout. RNA-seq revealed several HIF-1α-regulated genes that are upregulated in our VHL knockout cells and whose overexpression signifies an aggressive form of ccRCC in the cancer genome atlas (TCGA) database. Independent validation in a new clinical dataset confirms the upregulation of these genes in ccRCC samples compared to adjacent normal tissue. Our findings indicate that loss of VHL could be driving tumour cell dissemination through stabilization of HIF-1α in RCC. A better understanding of the mechanisms involved in this phenomenon can guide the search for more effective treatments to combat mRCC.
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MESH Headings
- Animals
- Bacterial Proteins
- CRISPR-Associated Protein 9
- CRISPR-Cas Systems
- Carcinoma, Renal Cell/genetics
- Carcinoma, Renal Cell/secondary
- Cell Line, Tumor
- Cell Movement
- Datasets as Topic
- Disease Models, Animal
- Endonucleases
- Epithelial-Mesenchymal Transition
- Female
- Gene Editing
- Gene Expression Regulation, Neoplastic
- Heterografts
- Humans
- Hypoxia-Inducible Factor 1, alpha Subunit/genetics
- Hypoxia-Inducible Factor 1, alpha Subunit/physiology
- Kidney Neoplasms/pathology
- Lung Neoplasms/secondary
- Mice
- Mice, Knockout
- Mice, Nude
- Neoplasm Proteins/genetics
- Neoplasm Proteins/physiology
- RNA, Guide, CRISPR-Cas Systems
- Von Hippel-Lindau Tumor Suppressor Protein/genetics
- Von Hippel-Lindau Tumor Suppressor Protein/physiology
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Affiliation(s)
- Shiruyeh Schokrpur
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California at Los Angeles CA 90095, USA
| | - Junhui Hu
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California at Los Angeles CA 90095, USA
- Department of Urology and Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- Department of Paediatric Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Diana L. Moughon
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California at Los Angeles CA 90095, USA
| | - Peijun Liu
- Department of Urology and Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Lucia C. Lin
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California at Los Angeles CA 90095, USA
| | - Kip Hermann
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California at Los Angeles CA 90095, USA
| | - Serghei Mangul
- Department of Computer Science and Human Genetics, University of California at Los Angeles CA 90095, USA
| | - Wei Guan
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California at Los Angeles CA 90095, USA
- Department of Urology and Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Matteo Pellegrini
- Department of Computer Science and Human Genetics, University of California at Los Angeles CA 90095, USA
- Department of Molecular, Cell, and Developmental Biology, University of California at Los Angeles CA 90095, USA
| | - Hua Xu
- Department of Urology and Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Lily Wu
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California at Los Angeles CA 90095, USA
- Department of Urology, David Geffen School of Medicine, University of California at Los Angeles CA 90095, USA
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49
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Parallel Regulation of von Hippel-Lindau Disease by pVHL-Mediated Degradation of B-Myb and Hypoxia-Inducible Factor α. Mol Cell Biol 2016; 36:1803-17. [PMID: 27090638 DOI: 10.1128/mcb.00067-16] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Accepted: 04/11/2016] [Indexed: 11/20/2022] Open
Abstract
pVHL, the protein product of the von Hippel-Lindau (VHL) tumor suppressor gene, is a ubiquitin ligase that targets hypoxia-inducible factor α (HIF-α) for proteasomal degradation. Although HIF-α activation is necessary for VHL disease pathogenesis, constitutive activation of HIF-α alone did not induce renal clear cell carcinomas and pheochromocytomas in mice, suggesting the involvement of an HIF-α-independent pathway in VHL pathogenesis. Here, we show that the transcription factor B-Myb is a pVHL substrate that is degraded via the ubiquitin-proteasome pathway and that vascular endothelial growth factor (VEGF)- and/or platelet-derived growth factor (PDGF)-dependent tyrosine 15 phosphorylation of B-Myb prevents its degradation. Mice injected with B-Myb knockdown 786-O cells developed dramatically larger tumors than those bearing control cell tumors. Microarray screening of B-Myb-regulated genes showed that the expression of HIF-α-dependent genes was not affected by B-Myb knockdown, indicating that B-Myb prevents HIF-α-dependent tumorigenesis through an HIF-α-independent pathway. These data indicate that the regulation of B-Myb by pVHL plays a critical role in VHL disease.
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50
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Swartley OM, Foley JF, Livingston DP, Cullen JM, Elmore SA. Histology Atlas of the Developing Mouse Hepatobiliary Hemolymphatic Vascular System with Emphasis on Embryonic Days 11.5-18.5 and Early Postnatal Development. Toxicol Pathol 2016; 44:705-25. [PMID: 26961180 DOI: 10.1177/0192623316630836] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A critical event in embryo development is the proper formation of the vascular system, of which the hepatobiliary system plays a pivotal role. This has led researchers to use transgenic mice to identify the critical steps involved in developmental disorders associated with the hepatobiliary vascular system. Vascular development is dependent upon normal vasculogenesis, angiogenesis, and the transformation of vessels into their adult counterparts. Any alteration in vascular development has the potential to cause deformities or embryonic death. Numerous publications describe specific stages of vascular development relating to various organs, but a single resource detailing the stage-by-stage development of the vasculature pertaining to the hepatobiliary system has not been available. This comprehensive histology atlas provides hematoxylin & eosin and immunohistochemical-stained sections of the developing mouse blood and lymphatic vasculature with emphasis on the hepatobiliary system between embryonic days (E) 11.5-18.5 and the early postnatal period. Additionally, this atlas includes a 3-dimensional video representation of the E18.5 mouse venous vasculature. One of the most noteworthy findings of this atlas is the identification of the portal sinus within the mouse, which has been erroneously misinterpreted as the ductus venosus in previous publications. Although the primary purpose of this atlas is to identify normal hepatobiliary vascular development, potential embryonic abnormalities are also described.
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Affiliation(s)
- Olivia M Swartley
- College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, USA
| | - Julie F Foley
- Cellular and Molecular Pathology Branch, National Toxicology Program, NIEHS, NIH, Research Triangle Park, North Carolina, USA
| | - David P Livingston
- USDA, Washington, DC, USA North Carolina State University, Raleigh, North Carolina, USA
| | - John M Cullen
- College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, USA
| | - Susan A Elmore
- Cellular and Molecular Pathology Branch, National Toxicology Program, NIEHS, NIH, Research Triangle Park, North Carolina, USA
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