1
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Mayayo-Peralta I, Debets DO, Prekovic S, Schuurman K, Beerthuijzen S, Almekinders M, Sanders J, Moelans CB, Saleiro S, Wesseling J, van Diest PJ, Henrique R, Jerónimo C, Altelaar M, Zwart W. Proteomics on malignant pleural effusions reveals ERα loss in metastatic breast cancer associates with SGK1-NDRG1 deregulation. Mol Oncol 2024; 18:156-169. [PMID: 37854018 PMCID: PMC10766196 DOI: 10.1002/1878-0261.13540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 09/06/2023] [Accepted: 10/17/2023] [Indexed: 10/20/2023] Open
Abstract
Breast cancer (BCa) is a highly heterogeneous disease, with hormone receptor status being a key factor in patient prognostication and treatment decision-making. The majority of primary tumours are positive for oestrogen receptor alpha (ERα), which plays a key role in tumorigenesis and disease progression, and represents the major target for treatment of BCa. However, around one-third of patients with ERα-positive BCa relapse and progress into the metastatic stage, with 20% of metastatic cases characterised by loss of ERα expression after endocrine treatment, known as ERα-conversion. It remains unclear whether ERα-converted cancers are biologically similar to bona fide ERα-negative disease and which signalling cascades compensate for ERα loss and drive tumour progression. To better understand the biological changes that occur in metastatic BCa upon ERα loss, we performed (phospho)proteomics analysis of 47 malignant pleural effusions derived from 37 BCa patients, comparing ERα-positive, ERα-converted and ERα-negative cases. Our data revealed that the loss of ERα-dependency in this metastatic site leads to only a partial switch to an ERα-negative molecular phenotype, with preservation of a luminal-like proteomic landscape. Furthermore, we found evidence for decreased activity of several key kinases, including serum/glucocorticoid regulated kinase 1 (SGK1), in ERα-converted metastases. Loss of SGK1 substrate phosphorylation may compensate for the loss of ERα-dependency in advanced disease and exposes a potential therapeutic vulnerability that may be exploited in treating these patients.
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Affiliation(s)
- Isabel Mayayo-Peralta
- Division of Oncogenomics, Oncode Institute, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Donna O Debets
- Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research, Utrecht Institute for Pharmaceutical Sciences, Utrecht University and Netherlands Proteomics Centre, The Netherlands
| | - Stefan Prekovic
- Division of Oncogenomics, Oncode Institute, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Karianne Schuurman
- Division of Oncogenomics, Oncode Institute, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Suzanne Beerthuijzen
- Division of Oncogenomics, Oncode Institute, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Mathilde Almekinders
- Department of Pathology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Joyce Sanders
- Department of Pathology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Cathy B Moelans
- Department of Pathology, University Medical Center Utrecht, The Netherlands
| | - Sandra Saleiro
- Lung Cancer Clinics, Portuguese Oncology Institute of Porto, Portugal
| | - Jelle Wesseling
- Department of Pathology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
- Division of Molecular Pathology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
- Department of Pathology, Leiden University Medical Center, The Netherlands
| | - Paul J van Diest
- Department of Pathology, University Medical Center Utrecht, The Netherlands
| | - Rui Henrique
- Cancer Biology and Epigenetics Group, Research Center of the Portuguese Oncology Institute-Porto, Portugal
- Department of Pathology, Portuguese Oncology Institute of Porto, Portugal
- Department of Pathology and Molecular Immunology, Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Portugal
| | - Carmen Jerónimo
- Cancer Biology and Epigenetics Group, Research Center of the Portuguese Oncology Institute-Porto, Portugal
- Department of Pathology, Portuguese Oncology Institute of Porto, Portugal
- Department of Pathology and Molecular Immunology, Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Portugal
| | - Maarten Altelaar
- Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research, Utrecht Institute for Pharmaceutical Sciences, Utrecht University and Netherlands Proteomics Centre, The Netherlands
| | - Wilbert Zwart
- Division of Oncogenomics, Oncode Institute, The Netherlands Cancer Institute, Amsterdam, The Netherlands
- Laboratory of Chemical Biology and Institute for Complex Molecular Systems, Department of Biomedical Engineering, Eindhoven University of Technology, The Netherlands
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2
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Flounlacker KM, Hahn YK, Xu R, Simons CA, Tian T, Hauser KF, Knapp PE. Myelin regulatory factor is a target of individual and interactive effects of HIV-1 Tat and morphine in the striatum and pre-frontal cortex. J Neurovirol 2023; 29:15-26. [PMID: 36853588 DOI: 10.1007/s13365-022-01107-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 11/11/2022] [Accepted: 11/25/2022] [Indexed: 03/01/2023]
Abstract
HIV-associated neurocognitive disorders (HAND) remain pervasive even with increased efficacy/use of antiretroviral therapies. Opioid use/abuse among HIV + individuals is documented to exacerbate CNS deficits. White matter (WM) alterations, including myelin pallor, and volume/structural alterations detected by diffusion tensor imaging are common observations in HIV + individuals, and studies in non-human primates suggest that WM may harbor virus. Using transgenic mice that express the HIV-1 Tat protein, we examined in vivo effects of 2-6 weeks of Tat and morphine exposure on WM using genomic and biochemical methods. RNA sequencing of striatal tissue at 2 weeks revealed robust changes in mRNAs associated with oligodendrocyte precursor populations and myelin integrity, including those for transferrin, the atypical oligodendrocyte marker N-myc downstream regulated 1 (Ndrg1), and myelin regulatory factor (Myrf/Mrf), an oligodendrocyte-specific transcription factor with a significant role in oligodendrocyte differentiation/maturation. Western blots conducted after 6-weeks exposure in 3 brain regions (striatum, corpus callosum, pre-frontal cortex) revealed regional differences in the effect of Tat and morphine on Myrf levels, and on levels of myelin basic protein (MBP), whose transcription is regulated by Myrf. Responses included individual and interactive effects. Although baseline and post-treatment levels of Myrf and MBP differed between brain regions, post-treatment MBP levels in striatum and pre-frontal cortex were compatible with changes in Myrf activity. Additionally, the Myrf regulatory ubiquitin ligase Fbxw7 was identified as a novel target in our model. These results suggest that Myrf and Fbxw7 contribute to altered myelin gene regulation in HIV.
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Affiliation(s)
- Kelly M Flounlacker
- Departments of Anatomy and Neurobiology, Virginia Commonwealth University School of Medicine, 1101 E. Marshall St, Richmond, VA, 23298-0709, USA.
| | - Yun Kyung Hahn
- Departments of Anatomy and Neurobiology, Virginia Commonwealth University School of Medicine, 1101 E. Marshall St, Richmond, VA, 23298-0709, USA
| | - Ruqiang Xu
- Departments of Anatomy and Neurobiology, Virginia Commonwealth University School of Medicine, 1101 E. Marshall St, Richmond, VA, 23298-0709, USA
| | - Chloe A Simons
- Departments of Anatomy and Neurobiology, Virginia Commonwealth University School of Medicine, 1101 E. Marshall St, Richmond, VA, 23298-0709, USA
| | - Tao Tian
- Pharmacology and Toxicology, Virginia Commonwealth University School of Medicine, Richmond, VA, 23298, USA
| | - Kurt F Hauser
- Departments of Anatomy and Neurobiology, Virginia Commonwealth University School of Medicine, 1101 E. Marshall St, Richmond, VA, 23298-0709, USA.,Pharmacology and Toxicology, Virginia Commonwealth University School of Medicine, Richmond, VA, 23298, USA.,The Institute for Drug and Alcohol Studies, Virginia Commonwealth University School of Medicine, Richmond, VA, 23298, USA
| | - Pamela E Knapp
- Departments of Anatomy and Neurobiology, Virginia Commonwealth University School of Medicine, 1101 E. Marshall St, Richmond, VA, 23298-0709, USA.,Pharmacology and Toxicology, Virginia Commonwealth University School of Medicine, Richmond, VA, 23298, USA.,The Institute for Drug and Alcohol Studies, Virginia Commonwealth University School of Medicine, Richmond, VA, 23298, USA
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3
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NDRG1 in Cancer: A Suppressor, Promoter, or Both? Cancers (Basel) 2022; 14:cancers14235739. [PMID: 36497221 PMCID: PMC9737586 DOI: 10.3390/cancers14235739] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 11/21/2022] [Accepted: 11/21/2022] [Indexed: 11/24/2022] Open
Abstract
N-myc downregulated gene-1 (NDRG1) has been variably reported as a metastasis suppressor, a biomarker of poor outcome, and a facilitator of disease progression in a range of different cancers. NDRG1 is poorly understood in cancer due to its context-dependent and pleiotropic functions. Within breast cancer, NDRG1 is reported to be either a facilitator of, or an inhibitor of tumour progression and metastasis. The wide array of roles played by NDRG1 are dependent on post-translational modifications and subcellular localization, as well as the cellular context, for example, cancer type. We present an update on NDRG1, and its association with hallmarks of cancer such as hypoxia, its interaction with oncogenic proteins such as p53 as well its role in oncogenic and metastasis pathways in breast and other cancers. We further comment on its functional implications as a metastasis suppressor and promoter, its clinical relevance, and discuss its therapeutic targetability in different cancers.
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4
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Beniamino Y, Cenni V, Piccioli M, Ciurli S, Zambelli B. The Ni(II)-Binding Activity of the Intrinsically Disordered Region of Human NDRG1, a Protein Involved in Cancer Development. Biomolecules 2022; 12:1272. [PMID: 36139110 PMCID: PMC9496542 DOI: 10.3390/biom12091272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 08/31/2022] [Accepted: 09/05/2022] [Indexed: 11/16/2022] Open
Abstract
Nickel exposure is associated with tumors of the respiratory tract such as lung and nasal cancers, acting through still-uncharacterized mechanisms. Understanding the molecular basis of nickel-induced carcinogenesis requires unraveling the mode and the effects of Ni(II) binding to its intracellular targets. A possible Ni(II)-binding protein and a potential focus for cancer treatment is hNDRG1, a protein induced by Ni(II) through the hypoxia response pathway, whose expression correlates with higher cancer aggressiveness and resistance to chemotherapy in lung tissue. The protein sequence contains a unique C-terminal sequence of 83 residues (hNDRG1*C), featuring a three-times-repeated decapeptide, involved in metal binding, lipid interaction and post-translational phosphorylation. In the present work, the biochemical and biophysical characterization of unmodified hNDRG1*C was performed. Bioinformatic analysis assigned it to the family of the intrinsically disordered regions and the absence of secondary and tertiary structure was experimentally proven by circular dichroism and NMR. Isothermal titration calorimetry revealed the occurrence of a Ni(II)-binding event with micromolar affinity. Detailed information on the Ni(II)-binding site and on the residues involved was obtained in an extensive NMR study, revealing an octahedral paramagnetic metal coordination that does not cause any major change of the protein backbone, which is coherent with CD analysis. hNDRG1*C was found in a monomeric form by light-scattering experiments, while the full-length hNDRG1 monomer was found in equilibrium between the dimer and tetramer, both in solution and in human cell lines. The results are the first essential step for understanding the cellular function of hNDRG1*C at the molecular level, with potential future applications to clarify its role and the role of Ni(II) in cancer development.
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Affiliation(s)
- Ylenia Beniamino
- Laboratory of Bioinorganic Chemistry, Department of Pharmacy and Biotechnology, University of Bologna, Viale Giuseppe Fanin 40, 40127 Bologna, Italy
| | - Vittoria Cenni
- CNR Institute of Molecular Genetics “Luigi-Luca Cavalli-Sforza” Unit of Bologna, Via di Barbiano 1/10, 40136 Bologna, Italy
| | - Mario Piccioli
- Department of Chemistry, Center for Magnetic Resonance, University of Florence, 50121 Florence, Italy
| | - Stefano Ciurli
- Laboratory of Bioinorganic Chemistry, Department of Pharmacy and Biotechnology, University of Bologna, Viale Giuseppe Fanin 40, 40127 Bologna, Italy
| | - Barbara Zambelli
- Laboratory of Bioinorganic Chemistry, Department of Pharmacy and Biotechnology, University of Bologna, Viale Giuseppe Fanin 40, 40127 Bologna, Italy
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5
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You GR, Chang JT, Li HF, Cheng AJ. Multifaceted and Intricate Oncogenic Mechanisms of NDRG1 in Head and Neck Cancer Depend on Its C-Terminal 3R-Motif. Cells 2022; 11:cells11091581. [PMID: 35563887 PMCID: PMC9104279 DOI: 10.3390/cells11091581] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 05/04/2022] [Accepted: 05/05/2022] [Indexed: 12/12/2022] Open
Abstract
N-Myc downstream-regulated 1 (NDRG1) has inconsistent oncogenic functions in various cancers. We surveyed and characterized the role of NDRG1 in head and neck cancer (HNC). Cellular methods included spheroid cell formation, clonogenic survival, cell viability, and Matrigel invasion assays. Molecular techniques included transcriptomic profiling, RT-qPCR, immunoblotting, in vitro phosphorylation, immunofluorescent staining, and confocal microscopy. Prognostic significance was assessed by Kaplan–Meier analysis. NDRG1 participated in diverse oncogenic functions in HNC cells, mainly stress response and cell motility. Notably, NDRG1 contributed to spheroid cell growth, radio-chemoresistance, and upregulation of stemness-related markers (CD44 and Twist1). NDRG1 facilitated cell migration and invasion, and was associated with modulation of the extracellular matrix molecules (fibronectin, vimentin). Characterizing the 3R-motif in NDRG1 revealed its mechanism in the differential regulation of the phenotypes. The 3R-motif displayed minimal effect on cancer stemness but was crucial for cell motility. Phosphorylating the motif by GSK3b at serine residues led to its nuclear translocation to promote motility. Clinical analyses supported the oncogenic function of NDRG1, which was overexpressed in HNC and associated with poor prognosis. The data elucidate the multifaceted and intricate mechanisms of NDRG1 in HNC. NDRG1 may be a prognostic indicator or therapeutic target for refractory HNC.
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Affiliation(s)
- Guo-Rung You
- Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan;
| | - Joseph T. Chang
- Department of Radiation Oncology and Proton Therapy Center, Linkou Chang Gung Memorial Hospital and Chang Gung University, Taoyuan 33302, Taiwan;
- School of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
| | - Hsiao-Fan Li
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan;
| | - Ann-Joy Cheng
- Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan;
- Department of Radiation Oncology and Proton Therapy Center, Linkou Chang Gung Memorial Hospital and Chang Gung University, Taoyuan 33302, Taiwan;
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan;
- Correspondence: ; Tel.: +886-3-211-8800
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6
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Marechal D, Dansu DK, Castro K, Patzig J, Magri L, Inbar B, Gacias M, Moyon S, Casaccia P. N-myc downstream regulated family member 1 (NDRG1) is enriched in myelinating oligodendrocytes and impacts myelin degradation in response to demyelination. Glia 2022; 70:321-336. [PMID: 34687571 PMCID: PMC8753715 DOI: 10.1002/glia.24108] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 10/05/2021] [Accepted: 10/05/2021] [Indexed: 02/03/2023]
Abstract
The N-myc downstream regulated gene family member 1 (NDRG1) is a gene whose mutation results in peripheral neuropathy with central manifestations. While most of previous studies characterized NDRG1 role in Schwann cells, the detection of central nervous system symptoms and the identification of NDRG1 as a gene silenced in the white matter of multiple sclerosis brains raise the question regarding its role in oligodendrocytes. Here, we show that NDRG1 is enriched in oligodendrocytes and myelin preparations, and we characterize its expression using a novel reporter mouse (TgNdrg1-EGFP). We report NDRG1 expression during developmental myelination and during remyelination after cuprizone-induced demyelination of the adult corpus callosum. The transcriptome of Ndrg1-EGFP+ cells further supports the identification of late myelinating oligodendrocytes, characterized by expression of genes regulating lipid metabolism and bioenergetics. We also generate a lineage specific conditional knockout (Olig1cre/+ ;Ndrg1fl/fl ) line to study its function. Null mice develop normally, and despite similar numbers of progenitor cells as wild type, they have fewer mature oligodendrocytes and lower levels of myelin proteins than controls, thereby suggesting NDRG1 as important for the maintenance of late myelinating oligodendrocytes. In addition, when control and Ndrg1 null mice are subject to cuprizone-induced demyelination, we observe a higher degree of demyelination in the mutants. Together these data identify NDRG1 as an important molecule for adult myelinating oligodendrocytes, whose decreased levels in the normal appearing white matter of human MS brains may result in greater susceptibility of myelin to damage.
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Affiliation(s)
- Damien Marechal
- Neuroscience Initiative, Advanced Science Research Center, CUNY, 85 St Nicholas Terrace, New York, NY 10031, USA
| | - David K. Dansu
- Neuroscience Initiative, Advanced Science Research Center, CUNY, 85 St Nicholas Terrace, New York, NY 10031, USA,Graduate Program in Biochemistry, The Graduate Center of The City University of New York, New York, NY 10016, USA
| | - Kamilah Castro
- Neuroscience Initiative, Advanced Science Research Center, CUNY, 85 St Nicholas Terrace, New York, NY 10031, USA,Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Julia Patzig
- Neuroscience Initiative, Advanced Science Research Center, CUNY, 85 St Nicholas Terrace, New York, NY 10031, USA
| | - Laura Magri
- Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Benjamin Inbar
- Neuroscience Initiative, Advanced Science Research Center, CUNY, 85 St Nicholas Terrace, New York, NY 10031, USA
| | - Mar Gacias
- Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Sarah Moyon
- Neuroscience Initiative, Advanced Science Research Center, CUNY, 85 St Nicholas Terrace, New York, NY 10031, USA
| | - Patrizia Casaccia
- Neuroscience Initiative, Advanced Science Research Center, CUNY, 85 St Nicholas Terrace, New York, NY 10031, USA,Graduate Program in Biochemistry, The Graduate Center of The City University of New York, New York, NY 10016, USA,Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA,Graduate Program in Biology, The Graduate Center of The City University of New York, New York, NY 10016, USA,Corresponding author:
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7
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Chi OZ, Chiricolo A, Liu X, Patel N, Jacinto E, Weiss HR. Inhibition of serum and glucocorticoid regulated kinases by GSK650394 reduced infarct size in early cerebral ischemia-reperfusion with decreased BBB disruption. Neurosci Lett 2021; 762:136143. [PMID: 34332027 DOI: 10.1016/j.neulet.2021.136143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 07/24/2021] [Accepted: 07/26/2021] [Indexed: 10/20/2022]
Abstract
Blood-brain barrier (BBB) disruption is one of the most important pathological changes following cerebral ischemia-reperfusion. We tested whether inhibition of the serum and glucocorticoid regulated kinase 1 (SGK1) would decrease BBB disruption and contribute to decreasing infarct size in the first few hours of cerebral ischemia-reperfusion within the thrombolysis therapy time window. After transient middle cerebral artery occlusion (MCAO), an SGK1 inhibitor GSK650394, or vehicle was administered into the lateral ventricle of rats. After one hour of MCAO and two hours of reperfusion, we determined BBB disruption using the transfer coefficient (Ki) of 14C-α-aminoisobutyric acid, and also determined infarct size, phosphorylation of NDRG1, and MMP2 protein level. Ischemia-reperfusion increased (+34%, p < 0.05) and GSK650394 decreased (-25%, p < 0.05) the Ki in the ischemic-reperfused cortex. GSK650394 decreased the percentage of cortical infarct (-31%, p < 0.001). At the same time GSK650394 reduced NDRG1 phosphorylation and MMP2 protein level in the ischemic-reperfused cortex suggesting that SGK1 was inhibited by GSK650394 and that lower MMP2 could be one of the mechanisms of decreased BBB disruption. Collectively our data suggest that GSK650394 could be neuroprotective and one of the mechanisms of the neuroprotection could be decreased BBB disruption. SGK1 inhibition within the thrombolysis therapy time window might reduce cerebral ischemia-reperfusion injury.
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Affiliation(s)
- Oak Z Chi
- Department of Anesthesiology and Perioperative Medicine, Rutgers Robert Wood Johnson Medical School, 125 Paterson Street, Suite 3100, New Brunswick, NJ 08901-1977, USA.
| | - Antonio Chiricolo
- Department of Anesthesiology and Perioperative Medicine, Rutgers Robert Wood Johnson Medical School, 125 Paterson Street, Suite 3100, New Brunswick, NJ 08901-1977, USA
| | - Xia Liu
- Department of Anesthesiology and Perioperative Medicine, Rutgers Robert Wood Johnson Medical School, 125 Paterson Street, Suite 3100, New Brunswick, NJ 08901-1977, USA
| | - Nikhil Patel
- Department of Neuroscience and Cell Biology, Rutgers Robert Wood Johnson Medical School, 675 Hoes Lane West, Piscataway, NJ 08854, USA
| | - Estela Jacinto
- Department of Biochemistry and Molecular Biology, Rutgers Robert Wood Johnson Medical School, 675 Hoes Lane West, Piscataway, NJ 08854, USA
| | - Harvey R Weiss
- Department of Neuroscience and Cell Biology, Rutgers Robert Wood Johnson Medical School, 675 Hoes Lane West, Piscataway, NJ 08854, USA
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8
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Arias Padilla LF, Castañeda-Cortés DC, Rosa IF, Moreno Acosta OD, Hattori RS, Nóbrega RH, Fernandino JI. Cystic proliferation of germline stem cells is necessary to reproductive success and normal mating behavior in medaka. eLife 2021; 10:62757. [PMID: 33646121 PMCID: PMC7946426 DOI: 10.7554/elife.62757] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 02/28/2021] [Indexed: 12/11/2022] Open
Abstract
The production of an adequate number of gametes is necessary for normal reproduction, for which the regulation of proliferation from early gonadal development to adulthood is key in both sexes. Cystic proliferation of germline stem cells is an especially important step prior to the beginning of meiosis; however, the molecular regulators of this proliferation remain elusive in vertebrates. Here, we report that ndrg1b is an important regulator of cystic proliferation in medaka. We generated mutants of ndrg1b that led to a disruption of cystic proliferation of germ cells. This loss of cystic proliferation was observed from embryogenic to adult stages, impacting the success of gamete production and reproductive parameters such as spawning and fertilization. Interestingly, the depletion of cystic proliferation also impacted male sexual behavior, with a decrease of mating vigor. These data illustrate why it is also necessary to consider gamete production capacity in order to analyze reproductive behavior.
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Affiliation(s)
| | - Diana C Castañeda-Cortés
- Reproductive and Molecular Biology Group, Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu, Brazil
| | - Ivana F Rosa
- Reproductive and Molecular Biology Group, Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu, Brazil
| | - Omar D Moreno Acosta
- Salmonid Experimental Station at Campos do Jordão, UPD-CJ, Sao Paulo Fisheries Institute (APTA/SAA), Campos do Jordao, Brazil
| | - Ricardo S Hattori
- Reproductive and Molecular Biology Group, Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu, Brazil
| | - Rafael H Nóbrega
- Instituto Tecnológico de Chascomús, INTECH (CONICET-UNSAM), Chascomús, Argentina
| | - Juan I Fernandino
- Instituto Tecnológico de Chascomús, INTECH (CONICET-UNSAM), Chascomús, Argentina
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9
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Lang F, Rajaxavier J, Singh Y, Brucker SY, Salker MS. The Enigmatic Role of Serum & Glucocorticoid Inducible Kinase 1 in the Endometrium. Front Cell Dev Biol 2020; 8:556543. [PMID: 33195190 PMCID: PMC7609842 DOI: 10.3389/fcell.2020.556543] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 09/24/2020] [Indexed: 11/13/2022] Open
Abstract
The serum- and glucocorticoid-inducible kinase 1 (SGK1) is subject to genetic up-regulation by diverse stimulators including glucocorticoids, mineralocorticoids, dehydration, ischemia, radiation and hyperosmotic shock. To become active, the expressed kinase requires phosphorylation, which is accomplished by PI3K/PDK1 and mTOR dependent signaling. SGK1 enhances the expression/activity of various transport proteins including Na+/K+-ATPase as well as ion-, glucose-, and amino acid- carriers in the plasma membrane. SGK1 can further up-regulate diverse ion channels, such as Na+-, Ca2+-, K+- and Cl- channels. SGK1 regulates expression/activity of a wide variety of transcription factors (such as FKHRL1/Foxo3a, β-catenin, NFκB and p53). SGK1 thus contributes to the regulation of transport, glycolysis, angiogenesis, cell survival, immune regulation, cell migration, tissue fibrosis and tissue calcification. In this review we summarized the current findings that SGK1 plays a crucial function in the regulation of endometrial function. Specifically, it plays a dual role in the regulation of endometrial receptivity necessary for implantation and, subsequently in pregnancy maintenance. Furthermore, fetal programming of blood pressure regulation requires maternal SGK1. Underlying mechanisms are, however, still ill-defined and there is a substantial need for additional information to fully understand the role of SGK1 in the orchestration of embryo implantation, embryo survival and fetal programming.
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Affiliation(s)
- Florian Lang
- Department of Physiology, Eberhard-Karls University, Tübingen, Germany
| | - Janet Rajaxavier
- Research Institute of Women’s Health, Eberhard-Karls University, Tübingen, Germany
| | - Yogesh Singh
- Research Institute of Women’s Health, Eberhard-Karls University, Tübingen, Germany
- Institute of Medical Genetics and Applied Genomics, Eberhard-Karls University, Tübingen, Germany
| | - Sara Y. Brucker
- Research Institute of Women’s Health, Eberhard-Karls University, Tübingen, Germany
| | - Madhuri S. Salker
- Research Institute of Women’s Health, Eberhard-Karls University, Tübingen, Germany
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10
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Park KC, Paluncic J, Kovacevic Z, Richardson DR. Pharmacological targeting and the diverse functions of the metastasis suppressor, NDRG1, in cancer. Free Radic Biol Med 2020; 157:154-175. [PMID: 31132412 DOI: 10.1016/j.freeradbiomed.2019.05.020] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 04/24/2019] [Accepted: 05/16/2019] [Indexed: 12/18/2022]
Abstract
N-myc downstream regulated gene-1 (NDRG1) is a potent metastasis suppressor that is regulated by hypoxia, metal ions including iron, the free radical nitric oxide (NO.), and various stress stimuli. This intriguing molecule exhibits diverse functions in cancer, inhibiting epithelial-mesenchymal transition (EMT), cell migration and angiogenesis by modulation of a plethora of oncogenes via cellular signaling. Thus, pharmacological targeting of NDRG1 signaling in cancer is a promising therapeutic strategy. Of note, novel anti-tumor agents of the di-2-pyridylketone thiosemicarbazone series, which exert the "double punch" mechanism by binding metal ions to form redox-active complexes, have been demonstrated to markedly up-regulate NDRG1 expression in cancer cells. This review describes the mechanisms underlying NDRG1 modulation by the thiosemicarbazones and the diverse effects NDRG1 exerts in cancer. As a major induction mechanism, iron depletion appears critical, with NO. also inducing NDRG1 through its ability to bind iron and generate dinitrosyl-dithiol iron complexes, which are then effluxed from cells. Apart from its potent anti-metastatic role, several studies have reported a pro-oncogenic role of NDRG1 in a number of cancer-types. Hence, it has been suggested that NDRG1 plays pleiotropic roles depending on the cancer-type. The molecular mechanism(s) underlying NDRG1 pleiotropy remain elusive, but are linked to differential regulation of WNT signaling and potentially differential interaction with the tumor suppressor, PTEN. This review discusses NDRG1 induction mechanisms by metal ions and NO. and both the anti- and possible pro-oncogenic functions of NDRG1 in multiple cancer-types and compares the opposite effects this protein exerts on cancer progression.
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Affiliation(s)
- Kyung Chan Park
- Molecular Pharmacology and Pathology Program, Discipline of Pathology and Bosch Institute, Medical Foundation Building (K25), The University of Sydney, Sydney, New South Wales, 2006, Australia
| | - Jasmina Paluncic
- Molecular Pharmacology and Pathology Program, Discipline of Pathology and Bosch Institute, Medical Foundation Building (K25), The University of Sydney, Sydney, New South Wales, 2006, Australia
| | - Zaklina Kovacevic
- Molecular Pharmacology and Pathology Program, Discipline of Pathology and Bosch Institute, Medical Foundation Building (K25), The University of Sydney, Sydney, New South Wales, 2006, Australia.
| | - Des R Richardson
- Molecular Pharmacology and Pathology Program, Discipline of Pathology and Bosch Institute, Medical Foundation Building (K25), The University of Sydney, Sydney, New South Wales, 2006, Australia.
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11
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PRMT1 Is Critical for the Transcriptional Activity and the Stability of the Progesterone Receptor. iScience 2020; 23:101236. [PMID: 32563156 PMCID: PMC7305383 DOI: 10.1016/j.isci.2020.101236] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 05/13/2020] [Accepted: 06/02/2020] [Indexed: 12/13/2022] Open
Abstract
The progesterone receptor (PR) is an inducible transcription factor that plays critical roles in female reproductive processes and in several aspects of breast cancer tumorigenesis. Our report describes the type I protein arginine methyltransferase 1 (PRMT1) as a cofactor controlling progesterone pathway, through the direct methylation of PR. Mechanistic assays in breast cancer cells indicate that PRMT1 methylates PR at the arginine 637 and reduces the stability of the receptor, thereby accelerating its recycling and finally its transcriptional activity. Depletion of PRMT1 decreases the expression of a subset of progesterone-inducible genes, controlling breast cancer cells proliferation and migration. Consistently, Kaplan-Meier analysis revealed that low expression of PRMT1 predicts a longer survival among the subgroup with high PR. Our study highlights PR methylation as a molecular switch adapting the transcription requirement of breast cells during tumorigenesis.
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12
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Biola-Clier M, Gaillard JC, Rabilloud T, Armengaud J, Carriere M. Titanium Dioxide Nanoparticles Alter the Cellular Phosphoproteome in A549 Cells. NANOMATERIALS 2020; 10:nano10020185. [PMID: 31973118 PMCID: PMC7074930 DOI: 10.3390/nano10020185] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 01/11/2020] [Accepted: 01/16/2020] [Indexed: 12/02/2022]
Abstract
TiO2 nanoparticles (NPs) are one of the most produced NPs worldwide and are used in many consumer products. Their impact on human health, especially through inhalation, has been studied for more than two decades. TiO2 is known for its strong affinity towards phosphates, and consequently interaction with cellular phosphates may be one of the mechanisms driving its toxicity. In the present study, we used a phosphoproteomics approach to document the interaction of TiO2-NP with phosphoproteins from A549 human pulmonary alveolar epithelial cells. Cells were exposed to 21 nm anatase/rutile TiO2-NPs, then their phosphopeptides were extracted and analyzed using shotgun proteomics. By comparing the phosphoprotein content, phosphorylation status and phosphorylation sites of exposed cells with that of control cells, our results show that by affecting the phosphoproteome, TiO2-NPs affect cellular processes such as apoptosis, linked with cell cycle and the DNA damage response, TP53 being central to these pathways. Other pathways including inflammation and molecular transport are also affected. These molecular mechanisms of TiO2-NP toxicity have been reported previously, our study shows for the first time that they may derive from phosphoproteome modulation, which could be one of their upstream regulators.
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Affiliation(s)
| | - Jean-Charles Gaillard
- Laboratoire Innovations technologiques pour la Détection et le Diagnostic (Li2D), Service de Pharmacologie et Immunoanalyse (SPI), CEA, INRA, F-30207 Bagnols-sur-Cèze, France;
| | - Thierry Rabilloud
- Chemistry and Biology of Metals, Univ. Grenoble Alpes, CNRS UMR5249, CEA, IRIG-DIESE-LCBM-ProMD, F-38054 Grenoble, France;
| | - Jean Armengaud
- Laboratoire Innovations technologiques pour la Détection et le Diagnostic (Li2D), Service de Pharmacologie et Immunoanalyse (SPI), CEA, INRA, F-30207 Bagnols-sur-Cèze, France;
- Correspondence: (J.A.); (M.C.)
| | - Marie Carriere
- Univ. Grenoble-Alpes, IRIG, SyMMES, CIBEST, F-38000 Grenoble, France;
- Correspondence: (J.A.); (M.C.)
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13
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Porcine Reproductive and Respiratory Syndrome Virus Activates Lipophagy To Facilitate Viral Replication through Downregulation of NDRG1 Expression. J Virol 2019; 93:JVI.00526-19. [PMID: 31189711 PMCID: PMC6694807 DOI: 10.1128/jvi.00526-19] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Accepted: 06/05/2019] [Indexed: 12/19/2022] Open
Abstract
Autophagy maintains cellular homeostasis by degrading organelles, proteins, and lipids in lysosomes. Autophagy is involved in the innate and adaptive immune responses to a variety of pathogens. Some viruses can hijack host autophagy to enhance their replication. However, the role of autophagy in porcine reproductive and respiratory syndrome virus (PRRSV) infection is unclear. Here, we show that N-Myc downstream-regulated gene 1 (NDRG1) deficiency induced autophagy, which facilitated PRRSV replication by regulating lipid metabolism. NDRG1 mRNA is expressed ubiquitously in most porcine tissues and most strongly in white adipose tissue. PRRSV infection downregulated the expression of NDRG1 mRNA and protein, while NDRG1 deficiency contributed to PRRSV RNA replication and progeny virus assembly. NDRG1 deficiency reduced the number of intracellular lipid droplets (LDs), but the expression levels of key genes in lipogenesis and lipolysis were not altered. Our results also show that NDRG1 deficiency promoted autophagy and increased the subsequent yields of hydrolyzed free fatty acids (FFAs). The reduced LD numbers, increased FFA levels, and enhanced PRRSV replication were abrogated in the presence of an autophagy inhibitor. Overall, our findings suggest that NDRG1 plays a negative role in PRRSV replication by suppressing autophagy and LD degradation.IMPORTANCE Porcine reproductive and respiratory syndrome virus (PRRSV), an enveloped single-positive-stranded RNA virus, causes acute respiratory distress in piglets and reproductive failure in sows. It has led to tremendous economic losses in the swine industry worldwide since it was first documented in the late 1980s. Vaccination is currently the major strategy used to control the disease. However, conventional vaccines and other strategies do not provide satisfactory or sustainable prevention. Therefore, safe and effective strategies to control PRRSV are urgently required. The significance of our research is that we demonstrate a previously unreported relationship between PRRSV, NDRG1, and lipophagy in the context of viral infection. Furthermore, our data point to a new role for NDRG1 in autophagy and lipid metabolism. Thus, NDRG1 and lipophagy will have significant implications for understanding PRRSV pathogenesis for developing new therapeutics.
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14
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McCaig C, Ataliotis P, Shtaya A, Omar AS, Green AR, Kind CN, Pereira AC, Naray-Fejes-Toth A, Fejes-Toth G, Yáñez-Muñoz RJ, Murray JT, Hainsworth AH. Induction of the cell survival kinase Sgk1: A possible novel mechanism for α-phenyl-N-tert-butyl nitrone in experimental stroke. J Cereb Blood Flow Metab 2019; 39:1111-1121. [PMID: 29260627 PMCID: PMC6545623 DOI: 10.1177/0271678x17746980] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 11/03/2017] [Accepted: 11/06/2017] [Indexed: 11/19/2022]
Abstract
Nitrones (e.g. α-phenyl-N-tert-butyl nitrone; PBN) are cerebroprotective in experimental stroke. Free radical trapping is their proposed mechanism. As PBN has low radical trapping potency, we tested Sgk1 induction as another possible mechanism. PBN was injected (100 mg/kg, i.p.) into adult male rats and mice. Sgk1 was quantified in cerebral tissue by microarray, quantitative RT-PCR and western analyses. Sgk1+/+ and Sgk1-/- mice were randomized to receive PBN or saline immediately following transient (60 min) occlusion of the middle cerebral artery. Neurological deficit was measured at 24 h and 48 h and infarct volume at 48 h post-occlusion. Following systemic PBN administration, rapid induction of Sgk1 was detected by microarray (at 4 h) and confirmed by RT-PCR and phosphorylation of the Sgk1-specific substrate NDRG1 (at 6 h). PBN-treated Sgk1+/+ mice had lower neurological deficit ( p < 0.01) and infarct volume ( p < 0.01) than saline-treated Sgk1+/+ mice. PBN-treated Sgk1-/- mice did not differ from saline-treated Sgk1-/- mice. Saline-treated Sgk1-/- and Sgk1+/+ mice did not differ. Brain Sgk3:Sgk1 mRNA ratio was 1.0:10.6 in Sgk1+/+ mice. Sgk3 was not augmented in Sgk1-/- mice. We conclude that acute systemic treatment with PBN induces Sgk1 in brain tissue. Sgk1 may play a part in PBN-dependent actions in acute brain ischemia.
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Affiliation(s)
- Catherine McCaig
- Molecular and Clinical Sciences Research
Institute, St Georges University of London, London, UK
| | - Paris Ataliotis
- Institute for Medical & Biomedical
Education, St George’s University of London, London, UK
| | - Anan Shtaya
- Molecular and Clinical Sciences Research
Institute, St Georges University of London, London, UK
| | - Ayan S Omar
- Molecular and Clinical Sciences Research
Institute, St Georges University of London, London, UK
| | - A Richard Green
- School of Life Sciences, University of
Nottingham, Nottingham, UK
| | - Clive N Kind
- Leicester School of Pharmacy,
De
Montfort University, Leicester, UK
| | - Anthony C Pereira
- Molecular and Clinical Sciences Research
Institute, St Georges University of London, London, UK
- Department of Neurology, St George’s
University Hospitals NHS Foundation Trust, London, UK
| | - Aniko Naray-Fejes-Toth
- Molecular & Systems Biology
Department, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Geza Fejes-Toth
- Molecular & Systems Biology
Department, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Rafael J Yáñez-Muñoz
- AGCTlab.org, Centre for Biomedical
Sciences, School of Biological Sciences,
Royal
Holloway, University of London, Egham,
Surrey, UK
| | - James T Murray
- School of Biochemistry and Immunology,
Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2,
Ireland
| | - Atticus H Hainsworth
- Molecular and Clinical Sciences Research
Institute, St Georges University of London, London, UK
- Department of Neurology, St George’s
University Hospitals NHS Foundation Trust, London, UK
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15
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Skedsmo FS, Tranulis MA, Espenes A, Prydz K, Matiasek K, Gunnes G, Hermansen LC, Jäderlund KH. Cell and context-dependent sorting of neuropathy-associated protein NDRG1 - insights from canine tissues and primary Schwann cell cultures. BMC Vet Res 2019; 15:121. [PMID: 31029158 PMCID: PMC6487035 DOI: 10.1186/s12917-019-1872-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 04/16/2019] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND Mutations in the N-myc downstream-regulated gene 1 (NDRG1) can cause degenerative polyneuropathy in humans, dogs, and rodents. In humans, this motor and sensory neuropathy is known as Charcot-Marie-Tooth disease type 4D, and it is assumed that analogous canine diseases can be used as models for this disease. NDRG1 is also regarded as a metastasis-suppressor in several malignancies. The tissue distribution of NDRG1 has been described in humans and rodents, but this has not been studied in the dog. RESULTS By immunolabeling and Western blotting, we present a detailed mapping of NDRG1 in dog tissues and primary canine Schwann cell cultures, with particular emphasis on peripheral nerves. High levels of phosphorylated NDRG1 appear in distinct subcellular localizations of the Schwann cells, suggesting signaling-driven rerouting of the protein. In a nerve from an Alaskan malamute homozygous for the disease-causing Gly98Val mutation in NDRG1, this signal was absent. Furthermore, NDRG1 is present in canine epithelial cells, predominantly in the cytosolic compartment, often with basolateral localization. Constitutive expression also occurs in mesenchymal cells, including developing spermatids that are transiently positive for NDRG1. In some cells, NDRG1 localize to centrosomes. CONCLUSIONS Overall, canine NDRG1 shows a cell and context-dependent localization. Our data from peripheral nerves and primary Schwann cell cultures suggest that the subcellular localization of NDRG1 in Schwann cells is dynamically influenced by signaling events leading to reversible phosphorylation of the protein. We propose that disease-causing mutations in NDRG1 can disrupt signaling in myelinating Schwann cells, causing disturbance in myelin homeostasis and axonal-glial cross talk, thereby precipitating polyneuropathy.
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Affiliation(s)
- Fredrik S Skedsmo
- Department of Companion Animal Clinical Sciences, Norwegian University of Life Sciences, Oslo, Norway
| | - Michael A Tranulis
- Department of Basic Sciences and Aquatic Medicine, Norwegian University of Life Sciences, Oslo, Norway
| | - Arild Espenes
- Department of Basic Sciences and Aquatic Medicine, Norwegian University of Life Sciences, Oslo, Norway
| | - Kristian Prydz
- Department of Biosciences, University of Oslo, Oslo, Norway
| | - Kaspar Matiasek
- Section of Clinical & Comparative Neuropathology, Centre for Clinical Veterinary Medicine, Ludwig-Maximilians-Universität, Munich, Germany
| | - Gjermund Gunnes
- Department of Basic Sciences and Aquatic Medicine, Norwegian University of Life Sciences, Oslo, Norway
| | - Lene C Hermansen
- Department of Plant Sciences, Norwegian University of Life Sciences, Ås, Norway
| | - Karin H Jäderlund
- Department of Companion Animal Clinical Sciences, Norwegian University of Life Sciences, Oslo, Norway.
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16
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Lang F, Stournaras C, Zacharopoulou N, Voelkl J, Alesutan I. Serum- and glucocorticoid-inducible kinase 1 and the response to cell stress. Cell Stress 2018; 3:1-8. [PMID: 31225494 PMCID: PMC6551677 DOI: 10.15698/cst2019.01.170] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Expression of the serum- and glucocorticoid-inducible kinase 1 (SGK1) is up-regulated by several types of cell stress, such as ischemia, radiation and hyperosmotic shock. The SGK1 protein is activated by a signaling cascade involving phosphatidylinositide-3-kinase (PI3K), 3-phosphoinositide-dependent kinase 1 (PDK1) and mammalian target of rapamycin (mTOR). SGK1 up-regulates Na+/K+-ATPase, a variety of carriers including Na+-,K+-,2Cl−- cotransporter (NKCC), NaCl cotransporter (NCC), Na+/H+ exchangers, diverse amino acid transporters and several glucose carriers such as Na+-coupled glucose transporter SGLT1. SGK1 further up-regulates a large number of ion channels including epithelial Na+ channel ENaC, voltagegated Na+ channel SCN5A, Ca2+ release-activated Ca2+ channel (ORAI1) with its stimulator STIM1, epithelial Ca2+ channels TRPV5 and TRPV6 and diverse K+ channels. Furthermore, SGK1 influences transcription factors such as nuclear factor kappa-B (NF-κB), p53 tumor suppressor protein, cAMP responsive element-binding protein (CREB), activator protein-1 (AP-1) and forkhead box O3 protein (FOXO3a). Thus, SGK1 supports cellular glucose uptake and glycolysis, angiogenesis, cell survival, cell migration, and wound healing. Presumably as last line of defense against tissue injury, SGK1 fosters tissue fibrosis and tissue calcification replacing energy consuming cells.
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Affiliation(s)
- Florian Lang
- Department of Vegetative and Clinical Physiology, Eberhard-Karls-University, Tübingen, Germany
| | - Christos Stournaras
- Department of Biochemistry, University of Crete Medical School, Voutes, Heraklion, Greece
| | - Nefeli Zacharopoulou
- Department of Biochemistry, University of Crete Medical School, Voutes, Heraklion, Greece
| | - Jakob Voelkl
- Department of Internal Medicine and Cardiology, Charité - Universitätsmedizin Berlin, Germany.,DZHK (German Centre for Cardiovascular Research), partner site Berlin, Germany
| | - Ioana Alesutan
- Department of Internal Medicine and Cardiology, Charité - Universitätsmedizin Berlin, Germany.,DZHK (German Centre for Cardiovascular Research), partner site Berlin, Germany.,Berlin Institute of Health (BIH), Berlin, Germany
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17
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Park KC, Menezes SV, Kalinowski DS, Sahni S, Jansson PJ, Kovacevic Z, Richardson DR. Identification of differential phosphorylation and sub-cellular localization of the metastasis suppressor, NDRG1. Biochim Biophys Acta Mol Basis Dis 2018; 1864:2644-2663. [DOI: 10.1016/j.bbadis.2018.04.011] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 03/23/2018] [Accepted: 04/16/2018] [Indexed: 12/20/2022]
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18
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Lang F, Pelzl L, Hauser S, Hermann A, Stournaras C, Schöls L. To die or not to die SGK1-sensitive ORAI/STIM in cell survival. Cell Calcium 2018; 74:29-34. [PMID: 29807219 DOI: 10.1016/j.ceca.2018.05.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Revised: 05/02/2018] [Accepted: 05/02/2018] [Indexed: 12/31/2022]
Abstract
The pore forming Ca2+ release activated Ca2+ channel (CRAC) isoforms ORAI1-3 and their regulators STIM1,2 accomplish store operated Ca2+ entry (SOCE). Activation of SOCE may lead to cytosolic Ca2+ oscillations, which in turn support cell proliferation and cell survival. ORAI/STIM and thus SOCE are upregulated by the serum and glucocorticoid inducible kinase SGK1, a kinase under powerful genomic regulation and activated by phosphorylation via the phosphoinositol-3-phosphate pathway. SGK1 enhances ORAI1 abundance partially by phosphorylation of Nedd4-2, an ubiquitin ligase priming the channel protein for degradation. The SGK1-phosphorylated Nedd4-2 binds to the protein 14-3-3 and is thus unable to ubiquinate ORAI1. SGK1 further increases the ORAI1 and STIM1 protein abundance by activating nuclear factor kappa B (NF-κB), a transcription factor upregulating the expression of STIM1 and ORAI1. SGK1-sensitive upregulation of ORAI/STIM and thus SOCE is triggered by a wide variety of hormones and growth factors, as well as several cell stressors including ischemia, radiation, and cell shrinkage. SGK1 dependent upregulation of ORAI/STIM confers survival of tumor cells and thus impacts on growth and therapy resistance of cancer. On the other hand, SGK1-dependent upregulation of ORAI1 and STIM1 may support survival of neurons and impairment of SGK1-dependent ORAI/STIM activity may foster neurodegeneration. Clearly, further experimental effort is needed to define the mechanisms linking SGK1-dependent upregulation of ORAI1 and STIM1 to cell survival and to define the impact of SGK1-dependent upregulation of ORAI1 and STIM1 on malignancy and neurodegenerative disease.
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Affiliation(s)
- Florian Lang
- Department of Vegetative Physiology, Eberhad Karls University, Wilhelmstr. 56, D-72074 Tübingen, Germany.
| | - Lisann Pelzl
- Department of Vegetative Physiology, Eberhad Karls University, Wilhelmstr. 56, D-72074 Tübingen, Germany
| | - Stefan Hauser
- German Center for Neurodegenerative Diseases, Research Site Tübingen, Germany; Department of Neurology and Hertie Institute for Clinical Brain Research, University of Tübingen, Germany
| | - Andreas Hermann
- Department of Neurology and Center for Regenerative Therapies Dresden (CRTD), Technische Universität Dresden, Germany & DZNE, German Center for Neurodegenerative Diseases, Research Site Dresden, Germany
| | - Christos Stournaras
- Department of Biochemistry, University of Crete Medical School, Heraklion, Greece
| | - Ludger Schöls
- German Center for Neurodegenerative Diseases, Research Site Tübingen, Germany; Department of Neurology and Hertie Institute for Clinical Brain Research, University of Tübingen, Germany
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19
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N-Myc Downstream-Regulated Gene 1 Restricts Hepatitis C Virus Propagation by Regulating Lipid Droplet Biogenesis and Viral Assembly. J Virol 2018; 92:JVI.01166-17. [PMID: 29118118 DOI: 10.1128/jvi.01166-17] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 10/24/2017] [Indexed: 02/07/2023] Open
Abstract
Host cells harbor various intrinsic mechanisms to restrict viral infections as a first line of antiviral defense. Viruses have evolved various countermeasures against these antiviral mechanisms. Here we show that N-Myc downstream-regulated gene 1 (NDRG1) limits productive hepatitis C virus (HCV) infection by inhibiting viral assembly. Interestingly, HCV infection downregulates NDRG1 protein and mRNA expression. The loss of NDRG1 increases the size and number of lipid droplets, which are the sites of HCV assembly. HCV suppresses NDRG1 expression by upregulating MYC, which directly inhibits the transcription of NDRG1 The upregulation of MYC also leads to the reduced expression of the NDRG1-specific kinase serum/glucocorticoid-regulated kinase 1 (SGK1), resulting in a markedly diminished phosphorylation of NDRG1. The knockdown of MYC during HCV infection rescues NDRG1 expression and phosphorylation, suggesting that MYC regulates NDRG1 at both the transcriptional and posttranslational levels. Overall, our results suggest that NDRG1 restricts HCV assembly by limiting lipid droplet formation. HCV counteracts this intrinsic antiviral mechanism by downregulating NDRG1 via a MYC-dependent mechanism.IMPORTANCE Hepatitis C virus (HCV) is an enveloped single-stranded RNA virus that targets hepatocytes in the liver. HCV is a leading cause of chronic hepatitis, liver cirrhosis, and hepatocellular carcinoma, and estimates suggest a global prevalence of 2.35%. Up to 80% of acutely infected individuals will develop chronic infection, and as many as 5% eventually progress to liver cancer. An understanding of the mechanisms behind virus-host interactions and viral carcinogenesis is still lacking. The significance of our research is that it identifies a previously unknown relationship between HCV and a known tumor-associated gene. Furthermore, our data point to a new role for this gene in the liver and in lipid metabolism. Thus, HCV infection serves as a great biological model to advance our knowledge of liver functions and the development of liver cancer.
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20
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Wang H, Li W, Xu J, Zhang T, Zuo D, Zhou Z, Lin B, Wang G, Wang Z, Sun W, Sun M, Chang S, Cai Z, Hua Y. NDRG1 inhibition sensitizes osteosarcoma cells to combretastatin A-4 through targeting autophagy. Cell Death Dis 2017; 8:e3048. [PMID: 28906492 PMCID: PMC5636982 DOI: 10.1038/cddis.2017.438] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Revised: 07/27/2017] [Accepted: 07/28/2017] [Indexed: 01/23/2023]
Abstract
Combretastatin A-4 (CA-4), a tubulin-depolymerizing agent, shows promising antitumor efficacy and has been under several clinical trials in solid tumors for 10 years. Autophagy has an important pro-survival role in cancer therapy, thus targeting autophagy may improve the efficacy of antitumor agents. N-myc downstream-regulated gene 1 (NDRG1) is a significant stress regulatory gene, which mediates cell survival and chemoresistance. Here we reported that CA-4 could induce cell-protective autophagy, and combination treatment of CA-4 and autophagy inhibitor chloroquine (CQ) exerted synergistic cytotoxic effect on human osteosarcoma (OS) cells. Meanwhile, CA-4 or CQ could increase the expression of NDRG1 independently. We further performed mechanistic study to explore how CA-4 and CQ regulate the expression of NDRG1. Using luciferase reporter assay, we found that CA-4 transcriptionally upregulated NDRG1 expression, whereas CQ triggered colocalization of NDRG1 and lysosome, which subsequently prevented lysosome-dependent degradation of NDRG1. Further, we showed that knockdown of NDRG1 caused the defect of lysosomal function, which accumulated LC3-positive autophagosomes by decreasing their fusion with lysosomes. Moreover, NDRG1 inhibition increased apoptosis in response to combination treatment with CA-4 and CQ. Taken together, our study revealed abrogation of NDRG1 expression sensitizes OS cells to CA-4 by suppression of autophagosome–lysosome fusion. These results provide clues for developing more effective cancer therapeutic strategies by the concomitant treatment with CA-4 and clinical available autophagy inhibitors.
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Affiliation(s)
- Hongsheng Wang
- Department of Orthopaedics, Yangpu Hospital, Tongji University, Shanghai, China.,Department of Orthopaedics, Shanghai General Hospital, School of Medicine Shanghai Jiao Tong University, Shanghai, China
| | - Wen Li
- Department of Oncology, Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jing Xu
- Department of Orthopaedics, Shanghai General Hospital, School of Medicine Shanghai Jiao Tong University, Shanghai, China
| | - Tao Zhang
- Department of Orthopaedics, Shanghai General Hospital, School of Medicine Shanghai Jiao Tong University, Shanghai, China
| | - Dongqing Zuo
- Department of Orthopaedics, Shanghai General Hospital, School of Medicine Shanghai Jiao Tong University, Shanghai, China
| | - Zifei Zhou
- Department of Orthopaedics, Shanghai General Hospital, School of Medicine Shanghai Jiao Tong University, Shanghai, China
| | - Binhui Lin
- Department of Orthopaedics, Shanghai General Hospital, School of Medicine Shanghai Jiao Tong University, Shanghai, China
| | - Gangyang Wang
- Department of Orthopaedics, Shanghai General Hospital, School of Medicine Shanghai Jiao Tong University, Shanghai, China
| | - Zhuoying Wang
- Department of Orthopaedics, Shanghai General Hospital, School of Medicine Shanghai Jiao Tong University, Shanghai, China
| | - Wei Sun
- Department of Orthopaedics, Shanghai General Hospital, School of Medicine Shanghai Jiao Tong University, Shanghai, China
| | - Mengxiong Sun
- Department of Orthopaedics, Shanghai General Hospital, School of Medicine Shanghai Jiao Tong University, Shanghai, China
| | - Shimin Chang
- Department of Orthopaedics, Yangpu Hospital, Tongji University, Shanghai, China
| | - Zhengdong Cai
- Department of Orthopaedics, Shanghai General Hospital, School of Medicine Shanghai Jiao Tong University, Shanghai, China.,Shanghai Bone Tumor Institution, Shanghai, China
| | - Yingqi Hua
- Department of Orthopaedics, Shanghai General Hospital, School of Medicine Shanghai Jiao Tong University, Shanghai, China.,Shanghai Bone Tumor Institution, Shanghai, China
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Ndrg1 promotes adipocyte differentiation and sustains their function. Sci Rep 2017; 7:7191. [PMID: 28775290 PMCID: PMC5543145 DOI: 10.1038/s41598-017-07497-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Accepted: 06/27/2017] [Indexed: 11/08/2022] Open
Abstract
Adipocytes play a central role in maintaining metabolic homeostasis in the body. Differentiation of adipocyte precursor cells requires the transcriptional activity of peroxisome proliferator-activated receptor-γ (Pparγ) and CCAAT/enhancer binding proteins (C/Ebps). Transcriptional activity is regulated by signaling modules activated by a plethora of hormones and nutrients. Mechanistic target of rapamacin complexes (mTORC) 1 and 2 are central for the coordination of hormonal and nutritional inputs in cells and are essential for adipogenesis. Serum glucocorticoid kinase 1 (Sgk1)-dependent phosphorylation of N-Myc downstream-regulated gene 1 (Ndrg1) is a hallmark of mTORC2 activation in cells. Moreover, Pparγ activation promotes Ndrg1 expression. However, the impact of Ndrg1 on adipocyte differentiation and function has not yet been defined. Here, we show that Ndrg1 expression and its Sgk1-dependent phosphorylation are induced during adipogenesis. Consistently, we demonstrate that Ndrg1 promotes adipocyte differentiation and function by inducing Pparγ expression. Additionally, our results indicate that Ndrg1 is required for C/Ebpα phosphorylation. Moreover, we found that Ndrg1 phosphorylation by Sgk1 promotes adipocyte formation. Taken together, we show that induction of Ndrg1 expression by Pparγ and its phosphorylation by Sgk1 kinase are required for the acquisition of adipocyte characteristics by precursor cells.
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Henry M, Power M, Kaushik P, Coleman O, Clynes M, Meleady P. Differential Phosphoproteomic Analysis of Recombinant Chinese Hamster Ovary Cells Following Temperature Shift. J Proteome Res 2017; 16:2339-2358. [DOI: 10.1021/acs.jproteome.6b00868] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Michael Henry
- National Institute for Cellular
Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Martin Power
- National Institute for Cellular
Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Prashant Kaushik
- National Institute for Cellular
Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Orla Coleman
- National Institute for Cellular
Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Martin Clynes
- National Institute for Cellular
Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Paula Meleady
- National Institute for Cellular
Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
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Lui GYL, Kovacevic Z, Richardson V, Merlot AM, Kalinowski DS, Richardson DR. Targeting cancer by binding iron: Dissecting cellular signaling pathways. Oncotarget 2016; 6:18748-79. [PMID: 26125440 PMCID: PMC4662454 DOI: 10.18632/oncotarget.4349] [Citation(s) in RCA: 127] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Accepted: 06/12/2015] [Indexed: 12/30/2022] Open
Abstract
Newer and more potent therapies are urgently needed to effectively treat advanced cancers that have developed resistance and metastasized. One such strategy is to target cancer cell iron metabolism, which is altered compared to normal cells and may facilitate their rapid proliferation. This is supported by studies reporting the anti-neoplastic activities of the clinically available iron chelators, desferrioxamine and deferasirox. More recently, ligands of the di-2-pyridylketone thiosemicarbazone (DpT) class have demonstrated potent and selective anti-proliferative activity across multiple cancer-types in vivo, fueling studies aimed at dissecting their molecular mechanisms of action. In the past five years alone, significant advances have been made in understanding how chelators not only modulate cellular iron metabolism, but also multiple signaling pathways implicated in tumor progression and metastasis. Herein, we discuss recent research on the targeting of iron in cancer cells, with a focus on the novel and potent DpT ligands. Several key studies have revealed that iron chelation can target the AKT, ERK, JNK, p38, STAT3, TGF-β, Wnt and autophagic pathways to subsequently inhibit cellular proliferation, the epithelial-mesenchymal transition (EMT) and metastasis. These developments emphasize that these novel therapies could be utilized clinically to effectively target cancer.
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Affiliation(s)
- Goldie Y L Lui
- Department of Pathology and Bosch Institute, Sydney Medical School, The University of Sydney, Sydney, New South Wales, Australia
| | - Zaklina Kovacevic
- Department of Pathology and Bosch Institute, Sydney Medical School, The University of Sydney, Sydney, New South Wales, Australia
| | - Vera Richardson
- Department of Pathology and Bosch Institute, Sydney Medical School, The University of Sydney, Sydney, New South Wales, Australia
| | - Angelica M Merlot
- Department of Pathology and Bosch Institute, Sydney Medical School, The University of Sydney, Sydney, New South Wales, Australia
| | - Danuta S Kalinowski
- Department of Pathology and Bosch Institute, Sydney Medical School, The University of Sydney, Sydney, New South Wales, Australia
| | - Des R Richardson
- Department of Pathology and Bosch Institute, Sydney Medical School, The University of Sydney, Sydney, New South Wales, Australia
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Lee JE, Kim JH. SUMO modification regulates the protein stability of NDRG1. Biochem Biophys Res Commun 2015; 459:161-5. [PMID: 25712528 DOI: 10.1016/j.bbrc.2015.02.090] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Accepted: 02/13/2015] [Indexed: 12/22/2022]
Abstract
N-myc Downstream Regulated Gene 1 (NDRG1) is a metastasis suppressor protein which suppresses metastasis without affecting primary tumorigenesis. There have been many reports about the anti-metastatic function of NDRG1 in various cancers. However, the regulatory mechanism of NDRG1 at the protein level has not been studied widely. Here, we found that NDRG1 is posttranslationally modified by Small Ubiquitin-like Modifier (SUMO), preferentially by SUMO-2, and the major SUMO acceptor site of NDRG1 is Lys 14. Using various SUMO-2 modification status mimicking NDRG1 mutants, we characterized the role of SUMO-2 modification on NDRG1. SUMO-2 modification does not affect the subcellular distribution of NDRG1. However, the protein stability of NDRG1 is influenced by SUMO-2 modification. We found that both the wildtype and the SUMO modification site mutant form of the NDRG1 protein were very stable but the protein stability of SUMO-2 fused NDRG1 K14R had dramatically decreased. In addition, the expression of p21 is downregulated by overexpression of SUMO-2 fused NDRG1 K14R mutants. These results indicate that SUMO-2 modification is implicated in the modulation of NDRG1 protein level and function. This novel link between SUMO modification and regulation of NDRG1 could be a therapeutic target for treatment of various metastatic cancers.
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Affiliation(s)
- Jae Eun Lee
- Department of Biological Sciences, Inha University, Incheon 402-751, South Korea
| | - Jung Hwa Kim
- Department of Biological Sciences, Inha University, Incheon 402-751, South Korea.
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25
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Stournaras C, Gravanis A, Margioris AN, Lang F. The actin cytoskeleton in rapid steroid hormone actions. Cytoskeleton (Hoboken) 2014; 71:285-93. [DOI: 10.1002/cm.21172] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2014] [Revised: 02/20/2014] [Accepted: 02/26/2014] [Indexed: 11/06/2022]
Affiliation(s)
- Christos Stournaras
- Department of Biochemistry; University of Crete Medical School; Heraklion Greece
- Department of Physiology; University of Tübingen; Tübingen Germany
| | - Achilles Gravanis
- Department of Pharmacology; University of Crete Medical School; Heraklion Greece
| | - Andrew N. Margioris
- Department of Clinical Chemistry; University of Crete Medical School; Heraklion Greece
| | - Florian Lang
- Department of Physiology; University of Tübingen; Tübingen Germany
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26
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Lang F, Stournaras C, Alesutan I. Regulation of transport across cell membranes by the serum- and glucocorticoid-inducible kinase SGK1. Mol Membr Biol 2014; 31:29-36. [PMID: 24417516 DOI: 10.3109/09687688.2013.874598] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The serum- and glucocorticoid-inducible kinase 1 (SGK1) is genomically upregulated by cell stress including energy depletion and hyperosmotic shock as well as a variety of hormones including glucocorticoids, mineralocorticoids and TGFβ. SGK1 is activated by insulin, growth factors and oxidative stress via phosphatidylinositide-3-kinase, 3-phosphoinositide-dependent kinase PDK1 and mTOR. SGK1 is a powerful stimulator of Na(+)/K(+)-ATPase, carriers (e.g., NCC, NKCC, NHE1, NHE3, SGLT1, several amino acid transporters) and ion channels (e.g., ENaC, SCN5A, TRPV4-6, ORAI1/STIM1, ROMK, KCNE1/KCNQ1, GluR6, CFTR). Mechanisms employed by SGK1 in transport regulation include direct phosphorylation of target transport proteins, phosphorylation and thus activation of other transport regulating kinases, stabilization of membrane proteins by phosphorylation and thus inactivation of the ubiquitin ligase NEDD4-2, as well as stimulation of transport protein expression by upregulation transcription factors (e.g., nuclear factor kappa-B [NFκB]) and by fostering of protein translation. SGK1 sensitivity of pump, carrier and channel activities participate in the regulation of epithelial transport, cardiac and neuronal excitability, degranulation, platelet function, migration, cell proliferation and apoptosis. SGK1-sensitive functions do not require the presence of SGK1 but are markedly upregulated by SGK1. Accordingly, the phenotype of SGK1 knockout mice is mild. The mice are, however, less sensitive to excessive activation of transport by glucocorticoids, mineralocorticoids, insulin and inflammation. Moreover, excessive SGK1 activity contributes to the pathophysiology of hypertension, obesity, diabetes, thrombosis, stroke, inflammation, autoimmune disease, fibrosis and tumor growth.
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Affiliation(s)
- Florian Lang
- Department of Physiology, University of Tübingen , Germany and
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27
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Fang BA, Kovačević Ž, Park KC, Kalinowski DS, Jansson PJ, Lane DJR, Sahni S, Richardson DR. Molecular functions of the iron-regulated metastasis suppressor, NDRG1, and its potential as a molecular target for cancer therapy. Biochim Biophys Acta Rev Cancer 2013; 1845:1-19. [PMID: 24269900 DOI: 10.1016/j.bbcan.2013.11.002] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2013] [Revised: 11/11/2013] [Accepted: 11/13/2013] [Indexed: 12/11/2022]
Abstract
N-myc down-regulated gene 1 (NDRG1) is a known metastasis suppressor in multiple cancers, being also involved in embryogenesis and development, cell growth and differentiation, lipid biosynthesis and myelination, stress responses and immunity. In addition to its primary role as a metastasis suppressor, NDRG1 can also influence other stages of carcinogenesis, namely angiogenesis and primary tumour growth. NDRG1 is regulated by multiple effectors in normal and neoplastic cells, including N-myc, histone acetylation, hypoxia, cellular iron levels and intracellular calcium. Further, studies have found that NDRG1 is up-regulated in neoplastic cells after treatment with novel iron chelators, which are a promising therapy for effective cancer management. Although the pathways by which NDRG1 exerts its functions in cancers have been documented, the relationship between the molecular structure of this protein and its functions remains unclear. In fact, recent studies suggest that, in certain cancers, NDRG1 is post-translationally modified, possibly by the activity of endogenous trypsins, leading to a subsequent alteration in its metastasis suppressor activity. This review describes the role of this important metastasis suppressor and discusses interesting unresolved issues regarding this protein.
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Affiliation(s)
- Bernard A Fang
- Molecular Pharmacology and Pathology Program, Discipline of Pathology and Bosch Institute, Blackburn Building (D06), The University of Sydney, Sydney, NSW 2006, Australia
| | - Žaklina Kovačević
- Molecular Pharmacology and Pathology Program, Discipline of Pathology and Bosch Institute, Blackburn Building (D06), The University of Sydney, Sydney, NSW 2006, Australia
| | - Kyung Chan Park
- Molecular Pharmacology and Pathology Program, Discipline of Pathology and Bosch Institute, Blackburn Building (D06), The University of Sydney, Sydney, NSW 2006, Australia
| | - Danuta S Kalinowski
- Molecular Pharmacology and Pathology Program, Discipline of Pathology and Bosch Institute, Blackburn Building (D06), The University of Sydney, Sydney, NSW 2006, Australia
| | - Patric J Jansson
- Molecular Pharmacology and Pathology Program, Discipline of Pathology and Bosch Institute, Blackburn Building (D06), The University of Sydney, Sydney, NSW 2006, Australia
| | - Darius J R Lane
- Molecular Pharmacology and Pathology Program, Discipline of Pathology and Bosch Institute, Blackburn Building (D06), The University of Sydney, Sydney, NSW 2006, Australia
| | - Sumit Sahni
- Molecular Pharmacology and Pathology Program, Discipline of Pathology and Bosch Institute, Blackburn Building (D06), The University of Sydney, Sydney, NSW 2006, Australia
| | - Des R Richardson
- Molecular Pharmacology and Pathology Program, Discipline of Pathology and Bosch Institute, Blackburn Building (D06), The University of Sydney, Sydney, NSW 2006, Australia.
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28
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Song Y, Cao L. N-myc downstream-regulated gene 1: Diverse and complicated functions in human hepatocellular carcinoma (Review). Oncol Lett 2013; 6:1539-1542. [PMID: 24260043 PMCID: PMC3834550 DOI: 10.3892/ol.2013.1636] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2013] [Accepted: 10/07/2013] [Indexed: 01/17/2023] Open
Abstract
N-myc downstream-regulated gene 1 (NDRG1) has been reported to be a multifunctional protein associated with carcinogenesis and tumor progression. However, the cellular function of NDRG1 remains elusive in human hepatocellular carcinoma (HCC). No NDRG1 expression is observed in normal liver tissue. Overexpression of NDRG1 has been observed in human HCC, particularly with aggressive invasion, metastasis, poor differentiation and short patient survival. In addition, recent studies have shown that NDRG1 exhibits an inhibitory effect on HCC growth in vitro and in vivo, which contrasts with previous reports indicating that NDRG1 promotes the proliferation and invasion of HCC cell lines. Further studies have shown that the localization of NDRG1 is variable, translocating to the nucleus or membrane according to the cell state, which may relate to the diverse function of NDRG1. The present study reviews our current knowledge with regard to the functions of NDRG1 in HCC and other types of human cancer.
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Affiliation(s)
- Yan Song
- Central Laboratory, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong 250014, P.R. China
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29
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Kültz D, Li J, Gardell A, Sacchi R. Quantitative molecular phenotyping of gill remodeling in a cichlid fish responding to salinity stress. Mol Cell Proteomics 2013; 12:3962-75. [PMID: 24065692 DOI: 10.1074/mcp.m113.029827] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
A two-tiered label-free quantitative (LFQ) proteomics workflow was used to elucidate how salinity affects the molecular phenotype, i.e. proteome, of gills from a cichlid fish, the euryhaline tilapia (Oreochromis mossambicus). The workflow consists of initial global profiling of relative tryptic peptide abundances in treated versus control samples followed by targeted identification (by MS/MS) and quantitation (by chromatographic peak area integration) of validated peptides for each protein of interest. Fresh water acclimated tilapia were independently exposed in separate experiments to acute short-term (34 ppt) and gradual long-term (70 ppt, 90 ppt) salinity stress followed by molecular phenotyping of the gill proteome. The severity of salinity stress can be deduced with high technical reproducibility from the initial global label-free quantitative profiling step alone at both peptide and protein levels. However, an accurate regulation ratio can only be determined by targeted label-free quantitative profiling because not all peptides used for protein identification are also valid for quantitation. Of the three salinity challenges, gradual acclimation to 90 ppt has the most pronounced effect on gill molecular phenotype. Known salinity effects on tilapia gills, including an increase in the size and number of mitochondria-rich ionocytes, activities of specific ion transporters, and induction of specific molecular chaperones are reflected in the regulation of abundances of the corresponding proteins. Moreover, specific protein isoforms that are responsive to environmental salinity change are resolved and it is revealed that salinity effects on the mitochondrial proteome are nonuniform. Furthermore, protein NDRG1 has been identified as a novel key component of molecular phenotype restructuring during salinity-induced gill remodeling. In conclusion, besides confirming known effects of salinity on gills of euryhaline fish, molecular phenotyping reveals novel insight into proteome changes that underlie the remodeling of tilapia gill epithelium in response to environmental salinity change.
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Affiliation(s)
- Dietmar Kültz
- Physiological Genomics Group, Department of Animal Sciences, University of California Davis, One Shields Avenue, Davis, California 95616
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30
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Sahin P, McCaig C, Jeevahan J, Murray JT, Hainsworth AH. The cell survival kinase SGK1 and its targets FOXO3a and NDRG1 in aged human brain. Neuropathol Appl Neurobiol 2013; 39:623-33. [DOI: 10.1111/nan.12023] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2012] [Accepted: 01/25/2013] [Indexed: 12/17/2022]
Affiliation(s)
- P. Sahin
- Stroke & Dementia Research Centre; Division of Clinical Sciences; St Georges University of London; London; UK
| | - C. McCaig
- Stroke & Dementia Research Centre; Division of Clinical Sciences; St Georges University of London; London; UK
| | - J. Jeevahan
- Cellular Pathology Service; St Georges Healthcare NHS Trust; London; UK
| | - J. T. Murray
- School of Biochemistry and Immunology; Trinity Biomedical Sciences Institute; Trinity College Dublin; Dublin; Ireland
| | - A. H. Hainsworth
- Stroke & Dementia Research Centre; Division of Clinical Sciences; St Georges University of London; London; UK
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31
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Proteolytic cleavage and truncation of NDRG1 in human prostate cancer cells, but not normal prostate epithelial cells. Biosci Rep 2013; 33:BSR20130042. [PMID: 23634903 PMCID: PMC3679596 DOI: 10.1042/bsr20130042] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
NDRG1 (N-myc downstream regulated gene-1) is a metastasis suppressor that is down-regulated in prostate cancer. NDRG1 phosphorylation is associated with inhibition of metastasis and Western blots indicate two bands at ~41 and ~46 kDa. Previous investigations by others suggest the higher band is due to NDRG1 phosphorylation. However, the current study using a dephosphorylation assay and the Phos-tag (phosphate-binding tag) SDS/PAGE assay, demonstrated that the 46 kDa NDRG1 protein band was not due to phosphorylation. Further experiments showed that the NDRG1 protein bands were not affected upon glycosidase treatment, despite marked effects of these enzymes on the glycosylated protein, fetuin. Analysis using RT–PCR (reverse transcriptase–PCR) demonstrated only a single amplicon, and thus, the two bands could not result from an alternatively spliced NDRG1 transcript. Western-blot analysis of prostate cancer cell lysates identified the 41 kDa band to be a truncated form of NDRG1, with MS confirming the full and truncated proteins to be NDRG1. Significantly, this truncated protein was not present in normal human PrECs (prostate epithelial cells). Western-blot analysis using anti-NDRG1 raised to its N-terminal sequence failed to detect the truncated protein, suggesting that it lacked N-terminus amino acids (residues 1–49). Sequence analysis predicted a pseudotrypsin protease cleavage site between Cys49–Gly50. Such cleavage of NDRG1 in cancer cells may result in loss of NDRG1 tumour suppressive activity.
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Bae DH, Jansson PJ, Huang ML, Kovacevic Z, Kalinowski D, Lee CS, Sahni S, Richardson DR. The role of NDRG1 in the pathology and potential treatment of human cancers. J Clin Pathol 2013; 66:911-7. [PMID: 23750037 DOI: 10.1136/jclinpath-2013-201692] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
N-myc downstream regulated gene 1 (NDRG1) has been well characterised to act as a metastatic suppressor in a number of human cancers. It has also been implicated to have a significant function in a number of physiological processes such as cellular differentiation and cell cycle. In this review, we discuss the role of NDRG1 in cancer pathology. NDRG1 was observed to be downregulated in the majority of cancers. Moreover, the expression of NDRG1 was found to be significantly lower in neoplastic tissues as compared with normal tissues. The most important function of NDRG1 in inhibiting tumour progression is associated with its ability to suppress metastasis. However, it has also been shown to have important effects on other stages of cancer progression (primary tumour growth and angiogenesis). Recently, novel iron chelators with selective antitumour activity (ie, Dp44mT, DpC) were shown to upregulate NDRG1 in cancer cells. Moreover, Dp44mT showed its antimetastatic potential only in cells expressing NDRG1, making this protein an important therapeutic target for cancer chemotherapy. This observation has led to increased interest in the examination of these novel anticancer agents.
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Affiliation(s)
- Dong-Hun Bae
- Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, University of Sydney, , Sydney, New South Wales, Australia
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Sun J, Zhang D, Bae DH, Sahni S, Jansson P, Zheng Y, Zhao Q, Yue F, Zheng M, Kovacevic Z, Richardson DR. Metastasis suppressor, NDRG1, mediates its activity through signaling pathways and molecular motors. Carcinogenesis 2013; 34:1943-54. [PMID: 23671130 DOI: 10.1093/carcin/bgt163] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
The metastasis suppressor, N-myc downstream regulated gene 1 (NDRG1), is negatively correlated with tumor progression in multiple neoplasms, being a promising new target for cancer treatment. However, the precise molecular effects of NDRG1 remain unclear. Herein, we summarize recent advances in understanding the impact of NDRG1 on cancer metastasis with emphasis on its interactions with the key oncogenic nuclear factor-kappaB, phosphatidylinositol-3 kinase/phosphorylated AKT/mammalian target of rapamycin and Ras/Raf/mitogen-activated protein kinase kinase/extracellular signal-regulated kinase signaling pathways. Recent studies demonstrating the inhibitory effects of NDRG1 on the epithelial-mesenchymal transition, a key initial step in metastasis, TGF-β pathway and the Wnt/β-catenin pathway are also described. Furthermore, NDRG1 was also demonstrated to regulate molecular motors in cancer cells, leading to inhibition of F-actin polymerization, stress fiber formation and subsequent reduction of cancer cell migration. Collectively, this review summarizes the underlying molecular mechanisms of the antimetastatic effects of NDRG1 in cancer cells.
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Affiliation(s)
- Jing Sun
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
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34
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Lang F, Voelkl J. Therapeutic potential of serum and glucocorticoid inducible kinase inhibition. Expert Opin Investig Drugs 2013; 22:701-14. [PMID: 23506284 DOI: 10.1517/13543784.2013.778971] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
INTRODUCTION Expression of serum-and-glucocorticoid-inducible kinase-1 (SGK1) is low in most cells, but dramatically increases under certain pathophysiological conditions, such as glucocorticoid or mineralocorticoid excess, inflammation with TGFβ release, hyperglycemia, cell shrinkage and ischemia. SGK1 is activated by insulin and growth factors via phosphatidylinositide-3-kinase, 3-phosphoinositide-dependent kinase and mammalian target of rapamycin. SGK1 sensitive functions include activation of ion channels (including epithelial Na(+) channel ENaC, voltage gated Na(+) channel SCN5A transient receptor potential channels TRPV4 - 6, Ca(2+) release activated Ca(2+) channel Orai1/STIM1, renal outer medullary K(+) channel ROMK, voltage gated K(+) channels KCNE1/KCNQ1, kainate receptor GluR6, cystic fibrosis transmembrane regulator CFTR), carriers (including Na(+),Cl(-) symport NCC, Na(+),K(+),2Cl(-) symport NKCC, Na(+)/H(+) exchangers NHE1 and NHE3, Na(+), glucose symport SGLT1, several amino acid transporters), and Na(+)/K(+)-ATPase. SGK1 regulates several enzymes (e.g., glycogen synthase kinase-3, ubiquitin-ligase Nedd4-2) and transcription factors (e.g., forkhead transcription factor 3a, β-catenin, nuclear factor kappa B). AREAS COVERED The phenotype of SGK1 knockout mice is mild and SGK1 is apparently dispensible for basic functions. Excessive SGK1 expression and activity, however, contributes to the pathophysiology of several disorders, including hypertension, obesity, diabetes, thrombosis, stroke, fibrosing disease, infertility and tumor growth. A SGK1 gene variant (prevalence ∼ 3 - 5% in Caucasians and ∼ 10% in Africans) is associated with hypertension, stroke, obesity and type 2 diabetes. SGK1 inhibitors have been developed and shown to reduce blood pressure of hyperinsulinemic mice and to counteract tumor cell survival. EXPERT OPINION Targeting SGK1 may be a therapeutic option in several clinical conditions, including metabolic syndrome and tumor growth.
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Affiliation(s)
- Florian Lang
- University of Tuebingen, Department of Physiology, Tuebingen, Germany.
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Amato R, Scumaci D, D'Antona L, Iuliano R, Menniti M, Di Sanzo M, Faniello MC, Colao E, Malatesta P, Zingone A, Agosti V, Costanzo FS, Mileo AM, Paggi MG, Lang F, Cuda G, Lavia P, Perrotti N. Sgk1 enhances RANBP1 transcript levels and decreases taxol sensitivity in RKO colon carcinoma cells. Oncogene 2012; 32:4572-8. [PMID: 23108393 DOI: 10.1038/onc.2012.470] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2012] [Revised: 08/01/2012] [Accepted: 08/21/2012] [Indexed: 12/16/2022]
Abstract
The serum- and glucocorticoid-regulated kinase (Sgk1) is essential for hormonal regulation of epithelial sodium channel-mediated sodium transport and is involved in the transduction of growth factor-dependent cell survival and proliferation signals. Growing evidence now points to Sgk1 as a key element in the development and/or progression of human cancer. To gain insight into the mechanisms through which Sgk1 regulates cell proliferation, we adopted a proteomic approach to identify up- or downregulated proteins after Sgk1-specific RNA silencing. Among several proteins, the abundance of which was found to be up- or downregulated upon Sgk1 silencing, we focused our attention of RAN-binding protein 1 (RANBP1), a major effector of the GTPase RAN. We report that Sgk1-dependent regulation of RANBP1 has functional consequences on both mitotic microtubule activity and taxol sensitivity of cancer cells.
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Affiliation(s)
- R Amato
- Department of Human Health, University Magna Graecia at Catanzaro, Campus S Venuta, Località Germaneto Viale Europa, Catanzaro, Italy
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