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Ebrahimighaei R, Tarassova N, Bond SC, McNeill MC, Hathway T, Vohra H, Newby AC, Bond M. Extracellular matrix stiffness controls cardiac fibroblast proliferation via the nuclear factor-Y (NF-Y) transcription factor. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2024; 1871:119640. [PMID: 37996060 DOI: 10.1016/j.bbamcr.2023.119640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 11/10/2023] [Accepted: 11/10/2023] [Indexed: 11/25/2023]
Abstract
The proliferative expansion of cardiac fibroblasts (CF) contributes towards cardiac fibrosis, which results in myocardial stiffening, cardiac dysfunction, and heart failure. CF sense and respond to increased stiffness of their local extracellular matrix, modulating their phenotype towards increased collagen synthesis and higher proliferation, leading potentially to a vicious circle of positive feedback. Here we describe a novel mechanism that mediates increased CF proliferation in response to a pathologically stiff Exteracellular matrix (ECM). The mechanism we describe is independent of the well-characterised mechano-sensitive transcript factors, YAP-TEAD and MKL1-SRF, which our data indicate are only responsible for part of the genes induced by stiffened ECM. Instead, our data identify Nuclear Factor-Y (NF-Y) as a novel mechanosensitive transcription factor, which mediates enhanced CF proliferation in response to a stiff ECM. We show that levels of NF-YA protein, the major regulatory subunit of NF-Y, and NF-Y transcriptional activity, are increased by a stiff ECM. Indeed, NF-Y activity drives the expression of multiple cell-cycle genes. Furthermore, NF-YA protein levels are dependent on FAK signalling suggesting a mechanistic link to ECM composition. Consistent with its role as a mechano-sensor, inhibition of NF-Y using siRNA or dominant negative mutant blocks CF proliferation on plastic in vitro, which models a stiff ECM, whereas ectopic expression of NF-YA increases the proliferation of cells interacting under conditions that model a physiologically soft ECM. In summary, our data demonstrate that NF-Y is a biomechanically sensitive transcription factor that promotes CF proliferation in a model of pathologically stiffened ECM.
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Affiliation(s)
- Reza Ebrahimighaei
- Department of Translational Health Sciences, Bristol Medical School, Bristol, BS2 8HW, United Kingdom
| | - Nathalie Tarassova
- Department of Translational Health Sciences, Bristol Medical School, Bristol, BS2 8HW, United Kingdom.
| | - Samuel C Bond
- Clifton High School, Clifton, Bristol, BS8 3JD, United Kingdom.
| | - Madeleine C McNeill
- Department of Translational Health Sciences, Bristol Medical School, Bristol, BS2 8HW, United Kingdom.
| | - Tom Hathway
- Department of Translational Health Sciences, Bristol Medical School, Bristol, BS2 8HW, United Kingdom.
| | - Hunaid Vohra
- Department of Translational Health Sciences, Bristol Medical School, Bristol, BS2 8HW, United Kingdom.
| | - Andrew C Newby
- Department of Translational Health Sciences, Bristol Medical School, Bristol, BS2 8HW, United Kingdom.
| | - Mark Bond
- Department of Translational Health Sciences, Bristol Medical School, Bristol, BS2 8HW, United Kingdom.
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2
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Londero M, Gallo A, Cattaneo C, Ghilardi A, Ronzio M, Del Giacco L, Mantovani R, Dolfini D. NF-YAl drives EMT in Claudin low tumours. Cell Death Dis 2023; 14:65. [PMID: 36707502 PMCID: PMC9883497 DOI: 10.1038/s41419-023-05591-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 01/11/2023] [Accepted: 01/13/2023] [Indexed: 01/29/2023]
Abstract
NF-Y is a trimeric transcription factor whose binding site -the CCAAT box- is enriched in cancer-promoting genes. The regulatory subunit, the sequence-specificity conferring NF-YA, comes in two major isoforms, NF-YA long (NF-YAl) and short (NF-YAs). Extensive expression analysis in epithelial cancers determined two features: widespread overexpression and changes in NF-YAl/NF-YAs ratios (NF-YAr) in tumours with EMT features. We performed wet and in silico experiments to explore the role of the isoforms in breast -BRCA- and gastric -STAD- cancers. We generated clones of two Claudinlow BRCA lines SUM159PT and BT549 ablated of exon-3, thus shifting expression from NF-YAl to NF-YAs. Edited clones show normal growth but reduced migratory capacities in vitro and ability to metastatize in vivo. Using TCGA, including upon deconvolution of scRNA-seq data, we formalize the clinical importance of high NF-YAr, associated to EMT genes and cell populations. We derive a novel, prognostic 158 genes signature common to BRCA and STAD Claudinlow tumours. Finally, we identify splicing factors associated to high NF-YAr, validating RBFOX2 as promoting expression of NF-YAl. These data bring three relevant results: (i) the definition and clinical implications of NF-YAr and the 158 genes signature in Claudinlow tumours; (ii) genetic evidence of 28 amino acids in NF-YAl with EMT-promoting capacity; (iii) the definition of selected splicing factors associated to NF-YA isoforms.
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Affiliation(s)
- Michela Londero
- Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133, Milano, Italy
| | - Alberto Gallo
- Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133, Milano, Italy
| | - Camilla Cattaneo
- Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133, Milano, Italy
| | - Anna Ghilardi
- Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133, Milano, Italy
| | - Mirko Ronzio
- Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133, Milano, Italy
| | - Luca Del Giacco
- Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133, Milano, Italy
| | - Roberto Mantovani
- Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133, Milano, Italy
| | - Diletta Dolfini
- Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133, Milano, Italy.
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3
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Clúa J, Rípodas C, Roda C, Battaglia ME, Zanetti ME, Blanco FA. NIPK, a protein pseudokinase that interacts with the C subunit of the transcription factor NF-Y, is involved in rhizobial infection and nodule organogenesis. FRONTIERS IN PLANT SCIENCE 2022; 13:992543. [PMID: 36212340 PMCID: PMC9532615 DOI: 10.3389/fpls.2022.992543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 08/29/2022] [Indexed: 06/16/2023]
Abstract
Heterotrimeric Nuclear Factor Y (NF-Y) transcription factors are key regulators of the symbiotic program that controls rhizobial infection and nodule organogenesis. Using a yeast two-hybrid screening, we identified a putative protein kinase of Phaseolus vulgaris that interacts with the C subunit of the NF-Y complex. Physical interaction between NF-YC1 Interacting Protein Kinase (NIPK) and NF-YC1 occurs in the cytoplasm and the plasma membrane. Only one of the three canonical amino acids predicted to be required for catalytic activity is conserved in NIPK and its putative homologs from lycophytes to angiosperms, indicating that NIPK is an evolutionary conserved pseudokinase. Post-transcriptional silencing on NIPK affected infection and nodule organogenesis, suggesting NIPK is a positive regulator of the NF-Y transcriptional complex. In addition, NIPK is required for activation of cell cycle genes and early symbiotic genes in response to rhizobia, including NF-YA1 and NF-YC1. However, strain preference in co-inoculation experiments was not affected by NIPK silencing, suggesting that some functions of the NF-Y complex are independent of NIPK. Our work adds a new component associated with the NF-Y transcriptional regulators in the context of nitrogen-fixing symbiosis.
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4
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de Latouliere L, Manni I, Ferrari L, Pisati F, Totaro MG, Gurtner A, Marra E, Pacello L, Pozzoli O, Aurisicchio L, Capogrossi MC, Deflorian G, Piaggio G. MITO-Luc/GFP zebrafish model to assess spatial and temporal evolution of cell proliferation in vivo. Sci Rep 2021; 11:671. [PMID: 33436662 PMCID: PMC7804000 DOI: 10.1038/s41598-020-79530-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 12/09/2020] [Indexed: 01/05/2023] Open
Abstract
We developed a novel reporter transgenic zebrafish model called MITO-Luc/GFP zebrafish in which GFP and luciferase expression are under the control of the master regulator of proliferation NF-Y. In MITO-Luc/GFP zebrafish it is possible to visualize cell proliferation in vivo by fluorescence and bioluminescence. In this animal model, GFP and luciferase expression occur in early living embryos, becoming tissue specific in juvenile and adult zebrafish. By in vitro and ex vivo experiments we demonstrate that luciferase activity in adult animals occurs in intestine, kidney and gonads, where detectable proliferating cells are located. Further, by time lapse experiments in live embryos, we observed a wave of GFP positive cells following fin clip. In adult zebrafish, in addition to a bright bioluminescence signal on the regenerating tail, an early unexpected signal coming from the kidney occurs indicating not only a fin cell proliferation, but also a systemic response to tissue damage. Finally, we observed that luciferase activity was inhibited by anti-proliferative interventions, i.e. 5FU, cell cycle inhibitors and X-Rays. In conclusion, MITO-Luc/GFP zebrafish is a novel animal model that may be crucial to assess the spatial and temporal evolution of cell proliferation in vivo.
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Affiliation(s)
- Luisa de Latouliere
- UOSD SAFU, IRCCS - Regina Elena National Cancer Institute, Via Elio Chianesi 53, 00144, Rome, Italy.
| | - Isabella Manni
- UOSD SAFU, IRCCS - Regina Elena National Cancer Institute, Via Elio Chianesi 53, 00144, Rome, Italy.
| | - Laura Ferrari
- IFOM - FIRC Institute of Molecular Oncology, Milan, Italy
| | - Federica Pisati
- Histopathology Unit, Cogentech S.C.a.R.L, 20139, Milan, Italy
| | | | - Aymone Gurtner
- UOSD SAFU, IRCCS - Regina Elena National Cancer Institute, Via Elio Chianesi 53, 00144, Rome, Italy.,Institute of Translational Pharmacology, National Research Council, Rome, Italy
| | - Emanuele Marra
- Takis s.r.l., via Castel Romano 100, 00128, Rome, Italy.,VITARES -APS, via Castel Romano 100, 00128, Rome, Italy
| | | | - Ombretta Pozzoli
- Laboratorio Di Biologia Vascolare e Medicina Rigenerativa - Centro Cardiologico Monzino - IRCCS (Istituto Di Ricovero E Cura a Carattere Scientifico), Milan, Italy.,Pfizer Italia, Via A.M. Mozzoni 12, 20152, Milan, Italy
| | - Luigi Aurisicchio
- Takis s.r.l., via Castel Romano 100, 00128, Rome, Italy.,VITARES -APS, via Castel Romano 100, 00128, Rome, Italy
| | - Maurizio C Capogrossi
- Johns Hopkins University School of Medicine, Division of Cardiology, 301 Building, Suite 2400, 4940 Eastern Avenue, Baltimore, MD, 21224, USA.,Laboratory of Cardiovascular Sciences, National Institute on Aging/National Institutes of Health, Baltimore, MD, 21224, USA
| | - Gianluca Deflorian
- IFOM - FIRC Institute of Molecular Oncology, Milan, Italy.,Cogentech SRL - Benefit Corporation, Milan, Italy
| | - Giulia Piaggio
- UOSD SAFU, IRCCS - Regina Elena National Cancer Institute, Via Elio Chianesi 53, 00144, Rome, Italy
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5
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Overexpression and alternative splicing of NF-YA in breast cancer. Sci Rep 2019; 9:12955. [PMID: 31506469 PMCID: PMC6736888 DOI: 10.1038/s41598-019-49297-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 07/30/2019] [Indexed: 12/11/2022] Open
Abstract
NF-Y is a CCAAT-binding trimeric transcription factor, whose regulome, interactome and oncogenic potential point to direct involvement in cellular transformation. Yet little is known about the levels of NF-Y subunits in tumors. We focused on breast carcinomas, and analyzed RNA-Seq datasets of TCGA and 54 BRCA cell lines at gene and isoforms level. We partitioned all tumors in the four major subclasses. NF-YA, but not histone-fold subunits NF-YB/NF-YC, is globally overexpressed, correlating with the proliferative Ki67 marker and a common set of 840 genes, with cell-cycle, metabolism GO terms. Their promoters are enriched in NF-Y, GC-rich and E2F sites. Surprisingly, there is an isoform switch, with the “short” isoform -NF-YAs- becoming predominant in tumors. E2F genes are also overexpressed in BRCA, but no switch in isoforms is observed. In Basal-like Claudinlow cell lines and tumors, expression of NF-YAl -long- isoform is high, together with 11 typical EMT markers and low levels of basal Keratins. Analysis of Progression-Free-Intervals indicates that tumors with unbalance of NF-YA isoforms ratios have worst clinical outcomes. The data suggest that NF-YA overexpression increases CCAAT-dependent, pro-growth genes in BRCA. NF-YAs is associated with a proliferative signature, but high levels of NF-YAl signal loss of epithelial features, EMT and acquisition of a more aggressive behavior in a subset of Claudinlow Basal-like tumors.
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6
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Libetti D, Bernardini A, Chiaramonte ML, Minuzzo M, Gnesutta N, Messina G, Dolfini D, Mantovani R. NF-YA enters cells through cell penetrating peptides. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2018; 1866:430-440. [PMID: 30296497 DOI: 10.1016/j.bbamcr.2018.10.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 09/10/2018] [Accepted: 10/03/2018] [Indexed: 12/26/2022]
Abstract
Cell Penetrating Peptides -CPPs- are short aminoacidic stretches present in proteins that have the ability to translocate the plasma membrane and facilitate delivery of various molecules. They are usually rich in basic residues, and organized as alpha helices. NF-Y is a transcription factor heterotrimer formed by two Histone Fold Domain -HFD- subunits and the sequence-specific NF-YA. NF-YA possesses two α-helices rich in basic residues. We show that it efficiently enters cells at nanomolar concentrations in the absence of carrier peptides. Mutagenesis identified at least two separate CPPs in the A1 and A2, which overlap with previously identified nuclear localization signals (NLS). The half-life of the transduced protein is short in human cancer cells, longer in mouse C2C12 myoblasts. The internalized NF-YA is capable of trimerization with the HFD subunits and binding to the target CCAAT box. Functionality is further suggested by protein transfection in C2C12 cells, leading to inhibition of differentiation to myotubes. In conclusion, NF-YA contains CPPs, hinting at novel -and unexpected- properties of this subunit.
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Affiliation(s)
- Debora Libetti
- Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133 Milano, Italy
| | - Andrea Bernardini
- Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133 Milano, Italy
| | - Maria Luisa Chiaramonte
- Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133 Milano, Italy
| | - Mario Minuzzo
- Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133 Milano, Italy
| | - Nerina Gnesutta
- Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133 Milano, Italy
| | - Graziella Messina
- Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133 Milano, Italy
| | - Diletta Dolfini
- Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133 Milano, Italy.
| | - Roberto Mantovani
- Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133 Milano, Italy.
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7
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Chikazawa M, Sato R. Identification of a Novel Function of Resveratrol and Genistein as a Regulator of β 2 -Adrenergic Receptor Expression in Skeletal Muscle Cells and Characterization of Promoter Elements Required for Promoter Activation. Mol Nutr Food Res 2018; 62:e1800530. [PMID: 30184338 DOI: 10.1002/mnfr.201800530] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 08/22/2018] [Indexed: 11/09/2022]
Abstract
SCOPE Modulating β2 -adrenergic receptor (β2 -AR) expression and activation is important for maintaining skeletal muscle function. In this study, two food factors, resveratrol (RSV) and genistein (GEN), that are able to regulate β2 -AR promoter activity and may improve skeletal muscle function are identified. METHODS AND RESULTS Using luciferase reporter assay, 357 functional food factors as candidates for β2 -AR promoter activity have been screened and subsequently RSV and GEN increase β2 -AR promoter activity and β2 -AR mRNA expression. Using promoter sequence analysis, it is shown that the CCAAT box and the GC box on the β2 -AR promoter are required for the regulation of β2 -AR expression by RSV or GEN. It is also ascertained that transcription factor NF-YA binds to the CCAAT box on the β2 -AR promoter and that the amount of NF-YA bound to the CCAAT box is unchanged by RSV or GEN treatment. Finally, it is confirmed that a GEN-containing diet increases β2 -AR expression in mouse skeletal muscle and increased skeletal muscle mass. CONCLUSIONS The findings show that food-derived molecules have the potential to influence skeletal muscle mass and function by regulating G protein-coupled receptor expression.
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Affiliation(s)
- Miho Chikazawa
- Food Biochemistry Laboratory, Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Ryuichiro Sato
- Food Biochemistry Laboratory, Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan.,Nutri-Life Science Laboratory, Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan.,AMED-CREST, Japan Agency for Medical Research and Development, Chiyoda-ku, Tokyo, Japan
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8
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Belluti S, Semeghini V, Basile V, Rigillo G, Salsi V, Genovese F, Dolfini D, Imbriano C. An autoregulatory loop controls the expression of the transcription factor NF-Y. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2018; 1861:509-518. [DOI: 10.1016/j.bbagrm.2018.02.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 02/14/2018] [Accepted: 02/27/2018] [Indexed: 12/16/2022]
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9
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Zhang Y, Guan Q, Liu Y, Zhang Y, Chen Y, Chen J, Liu Y, Su Z. Regulation of hepatic gluconeogenesis by nuclear factor Y transcription factor in mice. J Biol Chem 2018. [PMID: 29530977 DOI: 10.1074/jbc.ra117.000508] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Hepatic gluconeogenesis is essential to maintain blood glucose levels, and its abnormal activation leads to hyperglycemia and type 2 diabetes. However, the molecular mechanisms in the regulation of hepatic gluconeogenesis remain to be fully defined. In this study, using murine hepatocytes and a liver-specific knockout mouse model, we explored the physiological role of nuclear factor Y (NF-Y) in regulating hepatic glucose metabolism and the underlying mechanism. We found that NF-Y targets the gluconeogenesis pathway in the liver. Hepatic NF-Y expression was effectively induced by cAMP, glucagon, and fasting in vivo Lentivirus-mediated NF-Y overexpression in Hepa1-6 hepatocytes markedly raised the gluconeogenic gene expression and cellular glucose production compared with empty vector control cells. Conversely, CRISPR/Cas9-mediated knockdown of NF-Y subunit A (NF-YA) attenuated gluconeogenic gene expression and glucose production. We also provide evidence indicating that CRE-loxP-mediated, liver-specific NF-YA knockout compromises hepatic glucose production. Mechanistically, luciferase reporter gene assays and ChIP analysis indicated that NF-Y activates transcription of the gluconeogenic genes Pck1 and G6pc, by encoding phosphoenolpyruvate carboxykinase (PEPCK) and the glucose-6-phosphatase catalytic subunit (G6Pase), respectively, via directly binding to the CCAAT regulatory sequence motif in their promoters. Of note, NF-Y enhanced gluconeogenesis by interacting with cAMP-responsive element-binding protein (CREB). Overall, our results reveal a previously unrecognized physiological function of NF-Y in controlling glucose metabolism by up-regulating the gluconeogenic genes Pck1 and G6pc Modulation of hepatic NF-Y expression may therefore offer an attractive therapeutic approach to manage type 2 diabetes.
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Affiliation(s)
- Yanjie Zhang
- From the Molecular Medicine Research Center, West China Hospital, State Key Laboratory of Biotherapy, Sichuan University and Collaborative Innovation Center, Chengdu 610041, Sichuan, China
| | - Qiuyue Guan
- the Department of Geriatrics, People's Hospital of Sichuan Province, Chengdu 610041, Sichuan, China, and
| | - Yin Liu
- From the Molecular Medicine Research Center, West China Hospital, State Key Laboratory of Biotherapy, Sichuan University and Collaborative Innovation Center, Chengdu 610041, Sichuan, China
| | - Yuwei Zhang
- the Division of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Yulong Chen
- From the Molecular Medicine Research Center, West China Hospital, State Key Laboratory of Biotherapy, Sichuan University and Collaborative Innovation Center, Chengdu 610041, Sichuan, China
| | - Jinglu Chen
- From the Molecular Medicine Research Center, West China Hospital, State Key Laboratory of Biotherapy, Sichuan University and Collaborative Innovation Center, Chengdu 610041, Sichuan, China
| | - Yulan Liu
- From the Molecular Medicine Research Center, West China Hospital, State Key Laboratory of Biotherapy, Sichuan University and Collaborative Innovation Center, Chengdu 610041, Sichuan, China
| | - Zhiguang Su
- From the Molecular Medicine Research Center, West China Hospital, State Key Laboratory of Biotherapy, Sichuan University and Collaborative Innovation Center, Chengdu 610041, Sichuan, China,
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10
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Cicchillitti L, Manni I, Mancone C, Regazzo G, Spagnuolo M, Alonzi T, Carlomosti F, Dell'Anna ML, Dell'Omo G, Picardo M, Ciana P, Capogrossi MC, Tripodi M, Magenta A, Rizzo MG, Gurtner A, Piaggio G. The laminA/NF-Y protein complex reveals an unknown transcriptional mechanism on cell proliferation. Oncotarget 2018; 8:2628-2646. [PMID: 27793050 PMCID: PMC5356829 DOI: 10.18632/oncotarget.12914] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 10/10/2016] [Indexed: 12/02/2022] Open
Abstract
Lamin A is a component of the nuclear matrix that also controls proliferation by largely unknown mechanisms. NF-Y is a ubiquitous protein involved in cell proliferation composed of three subunits (-YA -YB -YC) all required for the DNA binding and transactivation activity. To get clues on new NF-Y partner(s) we performed a mass spectrometry screening of proteins that co-precipitate with the regulatory subunit of the complex, NF-YA. By this screening we identified lamin A as a novel putative NF-Y interactor. Co-immunoprecipitation experiments and confocal analysis confirmed the interaction between the two endogenous proteins. Interestingly, this association occurs on euchromatin regions, too. ChIP experiments demonstrate lamin A enrichment in several promoter regions of cell cycle related genes in a NF-Y dependent manner. Gain and loss of function experiments reveal that lamin A counteracts NF-Y transcriptional activity. Taking advantage of a recently generated transgenic reporter mouse, called MITO-Luc, in which an NF-Y–dependent promoter controls luciferase expression, we demonstrate that lamin A counteracts NF-Y transcriptional activity not only in culture cells but also in living animals. Altogether, our data demonstrate the occurrence of lamin A/NF-Y interaction and suggest a possible role of this protein complex in regulation of NF-Y function in cell proliferation.
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Affiliation(s)
- Lucia Cicchillitti
- Department of Research, Advanced Diagnostics and Technological Innovation, SAFU Unit, Translational Research Area, Regina Elena National Cancer Institute, 00144 Rome, Italy
| | - Isabella Manni
- Department of Research, Advanced Diagnostics and Technological Innovation, SAFU Unit, Translational Research Area, Regina Elena National Cancer Institute, 00144 Rome, Italy
| | - Carmine Mancone
- National Institute for Infectious Diseases L. Spallanzani, IRCCS, Department of Epidemiology and Preclinical Research, 00149 Rome, Italy.,Department of Cellular Biotechnologies and Haematology, Istituto Pasteur Italia, Fondazione Cenci Bolognetti, Sapienza University of Rome, 00161 Rome, Italy
| | - Giulia Regazzo
- Department of Research, Advanced Diagnostics and Technological Innovation, Genomic and Epigenetic Unit, Translational Research Area, Regina Elena National Cancer Institute, Rome, Italy
| | - Manuela Spagnuolo
- Department of Research, Advanced Diagnostics and Technological Innovation, Genomic and Epigenetic Unit, Translational Research Area, Regina Elena National Cancer Institute, Rome, Italy
| | - Tonino Alonzi
- National Institute for Infectious Diseases L. Spallanzani, IRCCS, Department of Epidemiology and Preclinical Research, 00149 Rome, Italy
| | - Fabrizio Carlomosti
- Fondazione Luigi Maria Monti, Istituto Dermopatico dell'Immacolata-IRCCS, Laboratorio di Patologia Vascolare, 00167 Rome, Italy
| | - Maria Lucia Dell'Anna
- Cutaneous Physiopathology and Integrated Center of Metabolomics Research, San Gallicano Dermatologic Institute, IRCCS, 00144 Rome, Italy
| | - Giulia Dell'Omo
- Department of Oncology and Hemato-Oncology and Department of Pharmacological and Biomolecular Sciences, University of Milan, 20133 Milan, Italy
| | - Mauro Picardo
- Cutaneous Physiopathology and Integrated Center of Metabolomics Research, San Gallicano Dermatologic Institute, IRCCS, Via Elio Chianesi 53, 00144, Rome, Italy
| | - Paolo Ciana
- Center of Excellence on Neurodegenerative Diseases, Department of Oncology and Hemato-Oncology, University of Milan, 20133 Milan, Italy
| | - Maurizio C Capogrossi
- Fondazione Luigi Maria Monti, Istituto Dermopatico dell'Immacolata-IRCCS, Laboratorio di Patologia Vascolare, Via dei Monti di Creta 104, Rome 00167, Italy Rome, Italy
| | - Marco Tripodi
- National Institute for Infectious Diseases L. Spallanzani, IRCCS, Department of Epidemiology and Preclinical Research, 00149 Rome, Italy.,Department of Cellular Biotechnologies and Haematology, Istituto Pasteur Italia, Fondazione Cenci Bolognetti, Sapienza University of Rome, 00161 Rome, Italy
| | - Alessandra Magenta
- Fondazione Luigi Maria Monti, Istituto Dermopatico dell'Immacolata-IRCCS, Laboratorio di Patologia Vascolare, Via dei Monti di Creta 104, Rome 00167, Italy Rome, Italy
| | - Maria Giulia Rizzo
- Department of Research, Advanced Diagnostics and Technological Innovation, Genomic and Epigenetic Unit, Translational Research Area, Regina Elena National Cancer Institute, Rome, Italy
| | - Aymone Gurtner
- Department of Research, Advanced Diagnostics and Technological Innovation, SAFU Unit, Translational Research Area, Regina Elena National Cancer Institute, 00144 Rome, Italy
| | - Giulia Piaggio
- Department of Research, Advanced Diagnostics and Technological Innovation, SAFU Unit, Translational Research Area, Regina Elena National Cancer Institute, 00144 Rome, Italy
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11
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Prognostic role of NF-YA splicing isoforms and Lamin A status in low grade endometrial cancer. Oncotarget 2018; 8:7935-7945. [PMID: 27974701 PMCID: PMC5352372 DOI: 10.18632/oncotarget.13854] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2016] [Accepted: 11/14/2016] [Indexed: 12/21/2022] Open
Abstract
Although most cases of low grade (G1) endometrial cancer (EC) do not behave aggressively, in rare instances, can progress in a highly aggressive manner. In this study we analyzed formalin-fixed, paraffin-embedded (FFPE) EC tissues to find novel clinical and biological features to help diagnosis and treatment of G1 ECs s in order to better stratify patient risk of recurrence. A retrospective cohort of FFPE specimens from patients with EC (n=87) and benign tissue specimens (NE) from patients who underwent a hysterectomy to treat other benign disease (n = 13) were collected. Total RNA and proteins were extracted and analyzed, respectively, by quantitative PCR and western blotting. NF-YAs is expressed and lamin A is down-modulated in all high grade (G2 and G3) ECs. In G1 ECs, NF-YAs expression is heterogeneous being expressed only in a subset of these tumours. Interestingly, the G1 ECs that express NF-YAs display low levels of lamin A similar to those present in G2 and G3 ECs. Of note, this pattern of NF-YAs and lamin A expression correlates with tumor aggressiveness assessed by comparative analysis with estrogen receptor (ER) status and epithelial-mesenchymal transition (EMT) markers thus suggesting its potential role as biomarker of tumour aggressiveness in G1 EC. In all grade ECs, lamin A is strongly downmodulated, being its expression inversely correlated with tumor aggressiveness and its loss of expression. We identified NF-YAs and lamin A expression levels as novel potential biomarkers useful to identify G1 ECs patients with risk of recurrence.
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12
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Branched-chain amino acids prevent hepatic fibrosis and development of hepatocellular carcinoma in a non-alcoholic steatohepatitis mouse model. Oncotarget 2017; 8:18191-18205. [PMID: 28212548 PMCID: PMC5392319 DOI: 10.18632/oncotarget.15304] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 12/27/2016] [Indexed: 01/06/2023] Open
Abstract
Oral supplementation with branched-chain amino acids (BCAA; leucine, isoleucine, and valine) in patients with liver cirrhosis potentially suppresses the incidence of hepatocellular carcinoma (HCC) and improves event-free survival. However, the detailed mechanisms of BCAA action have not been fully elucidated. BCAA were administered to atherogenic and high-fat (Ath+HF) diet-induced nonalcoholic steatohepatitis (NASH) model mice. Liver histology, tumor incidence, and gene expression profiles were evaluated. Ath+HF diet mice developed hepatic tumors at a high frequency at 68 weeks. BCAA supplementation significantly improved hepatic steatosis, inflammation, fibrosis, and tumors in Ath+HF mice at 68 weeks. GeneChip analysis demonstrated the significant resolution of pro-fibrotic gene expression by BCAA supplementation. The anti-fibrotic effect of BCAA was confirmed further using platelet-derived growth factor C transgenic mice, which develop hepatic fibrosis and tumors. In vitro, BCAA restored the transforming growth factor (TGF)-β1-stimulated expression of pro-fibrotic genes in hepatic stellate cells (HSC). In hepatocytes, BCAA restored TGF-β1-induced apoptosis, lipogenesis, and Wnt/β-Catenin signaling, and inhibited the transformation of WB-F344 rat liver epithelial stem-like cells. BCAA repressed the promoter activity of TGFβ1R1 by inhibiting the expression of the transcription factor NFY and histone acetyltransferase p300. Interestingly, the inhibitory effect of BCAA on TGF-β1 signaling was mTORC1 activity-dependent, suggesting the presence of negative feedback regulation from mTORC1 to TGF-β1 signaling. Thus, BCAA induce an anti-fibrotic effect in HSC, prevent apoptosis in hepatocytes, and decrease the incidence of HCC; therefore, BCAA supplementation would be beneficial for patients with advanced liver fibrosis with a high risk of HCC.
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Nishi-Tatsumi M, Yahagi N, Takeuchi Y, Toya N, Takarada A, Murayama Y, Aita Y, Sawada Y, Piao X, Oya Y, Shikama A, Masuda Y, Kubota M, Izumida Y, Matsuzaka T, Nakagawa Y, Sekiya M, Iizuka Y, Kawakami Y, Kadowaki T, Yamada N, Shimano H. A key role of nuclear factor Y in the refeeding response of fatty acid synthase in adipocytes. FEBS Lett 2017; 591:965-978. [PMID: 28281280 DOI: 10.1002/1873-3468.12620] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 03/02/2017] [Accepted: 03/04/2017] [Indexed: 11/10/2022]
Abstract
Fatty acid synthase (Fasn) is a key component of energy metabolism that is dynamically induced by food intake. Although extensive studies have revealed a number of transcription factors involved in the fasting/refeeding transition of Fasn expression in hepatocytes, much less evidence is available for adipocytes. Using the in vivo Ad-luc analytical system, we identified the inverted CCAAT element (ICE) around -100 nucleotides in the Fasn promoter as a critical cis-element for the refeeding response in adipocytes. Electrophoretic mobility shift assays and chromatin immunoprecipitation show that nuclear factor Y (NF-Y) binds to ICE specifically in refeeding states. Notably, the NF-Y binding to ICE is differently regulated between adipocytes and hepatocytes. These findings provide insights into the specific mechanisms controlling energy metabolism in adipocytes.
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Affiliation(s)
- Makiko Nishi-Tatsumi
- Nutrigenomics Research Group, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Naoya Yahagi
- Nutrigenomics Research Group, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Yoshinori Takeuchi
- Nutrigenomics Research Group, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Naoki Toya
- Nutrigenomics Research Group, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Ayako Takarada
- Nutrigenomics Research Group, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Yuki Murayama
- Nutrigenomics Research Group, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Yuichi Aita
- Nutrigenomics Research Group, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Yoshikazu Sawada
- Nutrigenomics Research Group, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Xiaoying Piao
- Nutrigenomics Research Group, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Yukari Oya
- Nutrigenomics Research Group, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Akito Shikama
- Nutrigenomics Research Group, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Yukari Masuda
- Nutrigenomics Research Group, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Midori Kubota
- Nutrigenomics Research Group, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Yoshihiko Izumida
- Nutrigenomics Research Group, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Takashi Matsuzaka
- Department of Internal Medicine (Endocrinology and Metabolism), Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Yoshimi Nakagawa
- Department of Internal Medicine (Endocrinology and Metabolism), Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Motohiro Sekiya
- Department of Internal Medicine (Endocrinology and Metabolism), Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Yoko Iizuka
- Department of Internal Medicine, Graduate School of Medicine, University of Tokyo, Japan
| | - Yasushi Kawakami
- Department of Internal Medicine (Endocrinology and Metabolism), Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Takashi Kadowaki
- Department of Internal Medicine, Graduate School of Medicine, University of Tokyo, Japan
| | - Nobuhiro Yamada
- Department of Internal Medicine (Endocrinology and Metabolism), Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Hitoshi Shimano
- Department of Internal Medicine (Endocrinology and Metabolism), Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
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Gurtner A, Manni I, Piaggio G. NF-Y in cancer: Impact on cell transformation of a gene essential for proliferation. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2016; 1860:604-616. [PMID: 27939755 DOI: 10.1016/j.bbagrm.2016.12.005] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 11/30/2016] [Accepted: 12/05/2016] [Indexed: 12/17/2022]
Abstract
NF-Y is a ubiquitous heterotrimeric transcription factor with a binding affinity for the CCAAT consensus motif, one of the most common cis-acting element in the promoter and enhancer regions of eukaryote genes in direct (CCAAT) or reverse (ATTGG) orientation. NF-Y consists of three subunits, NF-YA, the regulatory subunit of the trimer, NF-YB, and NF-YC, all required for CCAAT binding. Growing evidence in cells and animal models support the notion that NF-Y, driving transcription of a plethora of cell cycle regulatory genes, is a key player in the regulation of proliferation. Proper control of cellular growth is critical for cancer prevention and uncontrolled proliferation is a hallmark of cancer cells. Indeed, during cell transformation aberrant molecular pathways disrupt mechanisms controlling proliferation and many growth regulatory genes are altered in tumors. Here, we review bioinformatics, molecular and functional evidence indicating the involvement of the cell cycle regulator NF-Y in cancer-associated pathways. This article is part of a Special Issue entitled: Nuclear Factor Y in Development and Disease, edited by Prof. Roberto Mantovani.
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Affiliation(s)
- Aymone Gurtner
- Department of Research, Advanced Diagnostics and Technological Innovation, UOSD SAFU, Regina Elena National Cancer Institute, Via Elio Chianesi 53, 00144, Rome, Italy
| | - Isabella Manni
- Department of Research, Advanced Diagnostics and Technological Innovation, UOSD SAFU, Regina Elena National Cancer Institute, Via Elio Chianesi 53, 00144, Rome, Italy
| | - Giulia Piaggio
- Department of Research, Advanced Diagnostics and Technological Innovation, UOSD SAFU, Regina Elena National Cancer Institute, Via Elio Chianesi 53, 00144, Rome, Italy.
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15
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Zanetti ME, Rípodas C, Niebel A. Plant NF-Y transcription factors: Key players in plant-microbe interactions, root development and adaptation to stress. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2016; 1860:645-654. [PMID: 27939756 DOI: 10.1016/j.bbagrm.2016.11.007] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 11/18/2016] [Accepted: 11/21/2016] [Indexed: 11/15/2022]
Abstract
NF-Ys are heterotrimeric transcription factors composed by the NF-YA, NF-YB and NF-YC subunits. In plants, NF-Y subunits are encoded by multigene families whose members show structural and functional diversifications. An increasing number of NF-Y genes has been shown to play key roles during different stages of root nodule and arbuscular mycorrhizal symbiosis, as well as during the interaction of plants with pathogenic microorganisms. Individual members of the NF-YA and NF-YB families have also been implicated in the development of primary and lateral roots. In addition, different members of the NF-YA and NF-YB gene families from mono- and di-cotyledonous plants have been involved in plant responses to water and nutrient scarcity. This review presents the most relevant and striking results concerning these NF-Y subunits. A phylogenetic analysis of the functionally characterized NF-Y genes revealed that, across plant species, NF-Y proteins functioning in the same biological process tend to belong to common phylogenetic groups. Finally, we discuss the forthcoming challenges of plant NF-Y research, including the detailed dissection of expression patterns, the elucidation of functional specificities as well as the characterization of the potential NF-Y-mediated epigenetic mechanisms by which they control the expression of their target genes. This article is part of a Special Issue entitled: Nuclear Factor Y in Development and Disease, edited by Prof. Roberto Mantovani.
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Affiliation(s)
- María Eugenia Zanetti
- Instituto de Biotecnología y Biología Molecular, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, CCT-La Plata, CONICET, calle 115 y 49 s/n, CP 1900, La Plata, Argentina.
| | - Carolina Rípodas
- LIPM, Université de Toulouse, Institut National de la Recherche Agronomique, Centre, National de la Recherche Scientifique, 31326 Castanet-Tolosan, France
| | - Andreas Niebel
- LIPM, Université de Toulouse, Institut National de la Recherche Agronomique, Centre, National de la Recherche Scientifique, 31326 Castanet-Tolosan, France.
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16
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de Latouliere L, Manni I, Iacobini C, Pugliese G, Grazi GL, Perri P, Cappello P, Novelli F, Menini S, Piaggio G. A bioluminescent mouse model of proliferation to highlight early stages of pancreatic cancer: A suitable tool for preclinical studies. Ann Anat 2016; 207:2-8. [DOI: 10.1016/j.aanat.2015.11.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Revised: 11/16/2015] [Accepted: 11/17/2015] [Indexed: 01/23/2023]
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17
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Yan YX, Zhao JX, Han S, Zhou NJ, Jia ZQ, Yao SJ, Cao CL, Wang YL, Xu YN, Zhao J, Yan YL, Cui HX. Tetramethylpyrazine induces SH-SY5Y cell differentiation toward the neuronal phenotype through activation of the PI3K/Akt/Sp1/TopoIIβ pathway. Eur J Cell Biol 2015; 94:626-41. [PMID: 26518113 DOI: 10.1016/j.ejcb.2015.09.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2015] [Revised: 09/09/2015] [Accepted: 09/30/2015] [Indexed: 12/11/2022] Open
Abstract
Tetramethylpyrazine (TMP) is an active compound extracted from the traditional Chinese medicinal herb Chuanxiong. Previously, we have shown that TMP induces human SH-SY5Y neuroblastoma cell differentiation toward the neuronal phenotype by targeting topoisomeraseIIβ (TopoIIβ), a protein implicated in neural development. In the present study, we aimed to elucidate whether the transcriptional factors specificity protein 1 (Sp1) and nuclear factor Y (NF-Y), in addition to the upstream signaling pathways ERK1/2 and PI3K/Akt, are involved in modulating TopoIIβ expression in the neuronal differentiation process. We demonstrated that SH-SY5Y cells treated with TMP (80μM) terminally differentiated into neurons, characterized by increased neuronal markers, tubulin βIII and microtubule associated protein 2 (MAP2), and increased neurite outgrowth, with no negative effect on cell survival. TMP also increased the expression of TopoIIβ, which was accompanied by increased expression of Sp1 in the differentiated neuron-like cells, whereas NF-Y protein levels remained unchanged following the differentiation progression. We also found that the phosphorylation level of Akt, but not ERK1/2, was significantly increased as a result of TMP stimulation. Furthermore, as established by chromatin immunoprecipitation (ChIP) assay, activation of the PI3K/Akt pathway increased Sp1 binding to the promoter of the TopoIIβ gene. Blockage of PI3K/Akt was shown to lead to subsequent inhibition of TopoIIβ expression and neuronal differentiation. Collectively, the results indicate that the PI3K/Akt/Sp1/TopoIIβ signaling pathway is necessary for TMP-induced neuronal differentiation. Our findings offer mechanistic insights into understanding the upstream regulation of TopoIIβ in neuronal differentiation, and suggest potential applications of TMP both in neuroscience research and clinical practice to treat relevant diseases of the nervous system.
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Affiliation(s)
- Yong-Xin Yan
- Department of Cell Biology, Hebei Medical University, Hebei, PR China
| | - Jun-Xia Zhao
- Department of Cell Biology, Hebei Medical University, Hebei, PR China
| | - Shuo Han
- Department of Human Anatomy, Hebei Medical University, Hebei, PR China
| | - Na-Jing Zhou
- Department of Cell Biology, Hebei Medical University, Hebei, PR China
| | - Zhi-Qiang Jia
- Department of Cell Biology, Hebei Medical University, Hebei, PR China
| | - Sheng-Jie Yao
- Department of Cell Biology, Hebei Medical University, Hebei, PR China
| | - Cui-Li Cao
- Department of Human Anatomy, Hebei Medical University, Hebei, PR China
| | - Yan-Ling Wang
- Department of Cell Biology, Hebei Medical University, Hebei, PR China
| | - Yan-Nan Xu
- Department of Cell Biology, Hebei Medical University, Hebei, PR China
| | - Juan Zhao
- Department of Cell Biology, Hebei Medical University, Hebei, PR China
| | - Yun-Li Yan
- Department of Cell Biology, Hebei Medical University, Hebei, PR China.
| | - Hui-Xian Cui
- Department of Human Anatomy, Hebei Medical University, Hebei, PR China; Hebei Key Laboratory for Brain Aging and Cognitive Neuroscience, Hebei, PR China
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18
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Tomasovic A, Kurrle N, Sürün D, Heidler J, Husnjak K, Poser I, Schnütgen F, Scheibe S, Seimetz M, Jaksch P, Hyman A, Weissmann N, von Melchner H. Sestrin 2 protein regulates platelet-derived growth factor receptor β (Pdgfrβ) expression by modulating proteasomal and Nrf2 transcription factor functions. J Biol Chem 2015; 290:9738-52. [PMID: 25716320 DOI: 10.1074/jbc.m114.632133] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Indexed: 01/12/2023] Open
Abstract
We recently identified the antioxidant protein Sestrin 2 (Sesn2) as a suppressor of platelet-derived growth factor receptor β (Pdgfrβ) signaling and Pdgfrβ signaling as an inducer of lung regeneration and injury repair. Here, we identified Sesn2 and the antioxidant gene inducer nuclear factor erythroid 2-related factor 2 (Nrf2) as positive regulators of proteasomal function. Inactivation of Sesn2 or Nrf2 induced reactive oxygen species-mediated proteasomal inhibition and Pdgfrβ accumulation. Using bacterial artificial chromosome (BAC) transgenic HeLa and mouse embryonic stem cells stably expressing enhanced green fluorescent protein-tagged Sesn2 at nearly endogenous levels, we also showed that Sesn2 physically interacts with 2-Cys peroxiredoxins and Nrf2 albeit under different reductive conditions. Overall, we characterized a novel, redox-sensitive Sesn2/Pdgfrβ suppressor pathway that negatively interferes with lung regeneration and is up-regulated in the emphysematous lungs of patients with chronic obstructive pulmonary disease (COPD).
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Affiliation(s)
- Ana Tomasovic
- From the Department of Molecular Hematology, Goethe University Medical School, 60590 Frankfurt am Main, Germany
| | - Nina Kurrle
- From the Department of Molecular Hematology, Goethe University Medical School, 60590 Frankfurt am Main, Germany
| | - Duran Sürün
- From the Department of Molecular Hematology, Goethe University Medical School, 60590 Frankfurt am Main, Germany
| | - Juliana Heidler
- From the Department of Molecular Hematology, Goethe University Medical School, 60590 Frankfurt am Main, Germany
| | - Koraljka Husnjak
- Institute of Biochemistry II, Goethe University Medical School, 60590 Frankfurt am Main, Germany
| | - Ina Poser
- Max Planck Institute of Molecular Cell Biology and Genetics, 01307 Dresden, Germany
| | - Frank Schnütgen
- From the Department of Molecular Hematology, Goethe University Medical School, 60590 Frankfurt am Main, Germany
| | - Susan Scheibe
- Excellence Cluster Cardiopulmonary System (ECCPS), Justus-Liebig-University Giessen, Department of Internal Medicine, Universities of Giessen and Marburg Lung Centre (UGMLC), 35392 Giessen, Germany, and
| | - Michael Seimetz
- Excellence Cluster Cardiopulmonary System (ECCPS), Justus-Liebig-University Giessen, Department of Internal Medicine, Universities of Giessen and Marburg Lung Centre (UGMLC), 35392 Giessen, Germany, and
| | - Peter Jaksch
- Department of Thoracic Surgery, University Hospital of Vienna, A-1090 Vienna, Austria
| | - Anthony Hyman
- Max Planck Institute of Molecular Cell Biology and Genetics, 01307 Dresden, Germany
| | - Norbert Weissmann
- Excellence Cluster Cardiopulmonary System (ECCPS), Justus-Liebig-University Giessen, Department of Internal Medicine, Universities of Giessen and Marburg Lung Centre (UGMLC), 35392 Giessen, Germany, and
| | - Harald von Melchner
- From the Department of Molecular Hematology, Goethe University Medical School, 60590 Frankfurt am Main, Germany,
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19
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Su B, Luo T, Zhu J, Fu J, Zhao X, Chen L, Zhang H, Ren Y, Yu L, Yang X, Wu M, Feng G, Li S, Chen Y, Wang H. Interleukin-1β/Iinterleukin-1 receptor-associated kinase 1 inflammatory signaling contributes to persistent Gankyrin activation during hepatocarcinogenesis. Hepatology 2015; 61:585-97. [PMID: 25294684 DOI: 10.1002/hep.27551] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Accepted: 10/06/2014] [Indexed: 12/20/2022]
Abstract
UNLABELLED Hepatocellular carcinoma (HCC) is a prototype of inflammation-associated cancer. Oncoprotein Gankyrin, which mostly increases in HCC, plays a critical role in HCC development and metastasis. However, the exact mechanism of Gankyrin up-regulation in HCC remains unclear. A Gankyrin luciferase reporter was developed to screen a potential regulator for Gankyrin from a list of proinflammatory cytokines, and interleukin (IL)-1β was found as one of its activators. In clinical premalignant and malignant liver disease samples, enhanced IL-1β/interleukin-1 receptor-associated kinase 1 (IRAK-1) signaling accompanied by increased Gankyrin was observed. Lower expression of Gankyrin and phospho-IRAK-1 are favorable prognostic markers for HCC. A similar correlation was observed in the diethylnitrosamine (DEN) model of rat hepatocarcinogenesis. The results from Gankyrin reporter activity, real-time polymerase chain reaction, or immunoblotting further confirmed the up-regulation of Gankyrin by IL-1β/IRAK-1 inflammatory signaling. Moreover, a series of Gankyrin's truncated reporters were constructed, and electrophoretic mobility shift assay (EMSA) and chromatin immunoprecipitation (ChIP) were performed to analyze the properties of Gankyrin promoter. Mechanistically, the core promoter of Gankyrin contains the binding site of nuclear factor Y (NF-Y) family members, which can recruit histone acetyltransferase coactivator E1A-binding protein p300 (p300) or CREB-binding protein (CBP) to promote Gankyrin transcription. Conversely, knockdown of NF-Y, p300, or CBP inhibits Gankyrin expression. IL-1β stimulation causes sequential phosphorylation of IRAK-1, c-Jun N-terminal kinase (JNK), and p300 and enhances recruitment of the p300/CBP/NF-Y complex to Gankyrin promoter. Inhibition of phospho-JNK impairs IL-1β/IRAK-1 signaling-mediated up-regulation of Gankyrin. CONCLUSION The finding of IL-1β/IRAK-1 signaling promoting Gankyrin expression through JNK and NF-Y/p300/CBP complex provides a fresh view on inflammation-enhanced hepatocarcinogenesis.
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Affiliation(s)
- Bo Su
- International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Institute/Hospital, Shanghai, China; Central Laboratory, Thoracic Surgery Laboratory, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai, China
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20
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Puvvula PK, Desetty RD, Pineau P, Marchio A, Moon A, Dejean A, Bischof O. Long noncoding RNA PANDA and scaffold-attachment-factor SAFA control senescence entry and exit. Nat Commun 2014; 5:5323. [PMID: 25406515 PMCID: PMC4263151 DOI: 10.1038/ncomms6323] [Citation(s) in RCA: 151] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Accepted: 09/18/2014] [Indexed: 01/09/2023] Open
Abstract
Cellular senescence is a stable cell cycle arrest that limits the proliferation of pre-cancerous cells. Here we demonstrate that scaffold-attachment-factor A (SAFA) and the long noncoding RNA PANDA differentially interact with polycomb repressive complexes (PRC1 and PRC2) and the transcription factor NF-YA to either promote or suppress senescence. In proliferating cells, SAFA and PANDA recruit PRC complexes to repress the transcription of senescence-promoting genes. Conversely, the loss of SAFA–PANDA–PRC interactions allows expression of the senescence programme. Accordingly, we find that depleting either SAFA or PANDA in proliferating cells induces senescence. However, in senescent cells where PANDA sequesters transcription factor NF-YA and limits the expression of NF-YA-E2F-coregulated proliferation-promoting genes, PANDA depletion leads to an exit from senescence. Together, our results demonstrate that PANDA confines cells to their existing proliferative state and that modulating its level of expression can cause entry or exit from senescence. The gene-regulatory circuits that establish and maintain senescence remain incompletely understood. Here, the authors show that the long noncoding RNA PANDA and scaffold-attachment-factor A (SAFA) regulate entry and exit from senescence through context-specific interactions with PRC 1/2 and the transcription factor NF-YA.
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Affiliation(s)
- Pavan Kumar Puvvula
- 1] Department of Pediatrics, University of Utah, Salt Lake City, Utah 84102, USA [2] Weis Center for Research, Geisinger Clinic, Danville, Pennsylvania 17822, USA
| | - Rohini Devi Desetty
- Weis Center for Research, Geisinger Clinic, Danville, Pennsylvania 17822, USA
| | - Pascal Pineau
- 1] Institut Pasteur, Laboratory of Nuclear Organization and Oncogenesis, F-75015 Paris, France [2] INSERM, U993, F-75015 Paris, France [3] Equipe Labellisée Ligue Nationale Contre le Cancer, F-75015 Paris, France
| | - Agnés Marchio
- 1] Institut Pasteur, Laboratory of Nuclear Organization and Oncogenesis, F-75015 Paris, France [2] INSERM, U993, F-75015 Paris, France [3] Equipe Labellisée Ligue Nationale Contre le Cancer, F-75015 Paris, France
| | - Anne Moon
- 1] Department of Pediatrics, University of Utah, Salt Lake City, Utah 84102, USA [2] Weis Center for Research, Geisinger Clinic, Danville, Pennsylvania 17822, USA
| | - Anne Dejean
- 1] Institut Pasteur, Laboratory of Nuclear Organization and Oncogenesis, F-75015 Paris, France [2] INSERM, U993, F-75015 Paris, France [3] Equipe Labellisée Ligue Nationale Contre le Cancer, F-75015 Paris, France
| | - Oliver Bischof
- 1] Institut Pasteur, Laboratory of Nuclear Organization and Oncogenesis, F-75015 Paris, France [2] INSERM, U993, F-75015 Paris, France
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21
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Zhang HT, Zhang D, Zha ZG, Hu CD. Transcriptional activation of PRMT5 by NF-Y is required for cell growth and negatively regulated by the PKC/c-Fos signaling in prostate cancer cells. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2014; 1839:1330-40. [PMID: 25281873 DOI: 10.1016/j.bbagrm.2014.09.015] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Revised: 09/17/2014] [Accepted: 09/24/2014] [Indexed: 01/11/2023]
Abstract
Protein arginine methyltransferase 5 (PRMT5) symmetrically methylates arginine residues of histones and non-histone protein substrates and regulates a variety of cellular processes through epigenetic control of target gene expression or post-translational modification of signaling molecules. Recent evidence suggests that PRMT5 may function as an oncogene and its overexpression contributes to the development and progression of several human cancers. However, the mechanism underlying the regulation of PRMT5 expression in cancer cells remains largely unknown. In the present study, we have mapped the proximal promoter of PRMT5 to the -240bp region and identified nuclear transcription factor Y (NF-Y) as a critical transcription factor that binds to the two inverted CCAAT boxes and regulates PRMT5 expression in multiple cancer cell lines. Further, we present evidence that loss of PRMT5 is responsible for cell growth inhibition induced by knockdown of NF-YA, a subunit of NF-Y that forms a heterotrimeric complex with NF-YB and NF-YC for function. Significantly, we have found that activation of protein kinase C (PKC) by phorbol 12-myristate 13-acetate (PMA) in LNCaP prostate cancer cells down-regulates the expression of NF-YA and PRMT5 at the transcription level in a c-Fos-dependent manner. Given that down-regulation of several PKC isozymes is implicated in the development and progression of several human cancers, our findings suggest that the PKC-c-Fos-NF-Y signaling pathway may be responsible for PRMT5 overexpression in a subset of human cancer patients.
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Affiliation(s)
- Huan-Tian Zhang
- Department of Medicinal Chemistry and Molecular Pharmacology and the Purdue University Center for Cancer Research, Purdue University, West Lafayette, IN 47907, USA; Institute of Orthopedic Diseases and Department of Orthopedics of the First Affiliated Hospital, Jinan University, Guangzhou 510630, People's Republic of China
| | - Dabao Zhang
- Department of Statistics, Purdue University, West Lafayette, IN 47907, USA
| | - Zhen-Gang Zha
- Department of Medicinal Chemistry and Molecular Pharmacology and the Purdue University Center for Cancer Research, Purdue University, West Lafayette, IN 47907, USA
| | - Chang-Deng Hu
- Department of Medicinal Chemistry and Molecular Pharmacology and the Purdue University Center for Cancer Research, Purdue University, West Lafayette, IN 47907, USA.
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22
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Siriwardana CL, Kumimoto RW, Jones DS, Holt BF. Gene Family Analysis of the Arabidopsis NF-YA Transcription Factors Reveals Opposing Abscisic Acid Responses During Seed Germination. PLANT MOLECULAR BIOLOGY REPORTER 2014; 32:971-986. [PMID: 25190903 PMCID: PMC4149875 DOI: 10.1007/s11105-014-0704-6] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
In the plant kingdom, each of the NUCLEAR FACTOR-Y (NF-Y) transcription factor families, NF-YA, NF-YB, and NF-YC, has undergone a great expansion compared to the animal kingdom. For example, Arabidopsis thaliana has 10 members of each gene family compared to only one in humans. Progress towards understanding the significance of this expansion is limited due to a lack of studies looking at the complete gene family during plant development. In the current study, transgenic overexpression lines were created for all 10 Arabidopsis NF-YA genes and examined for general development and alterations in abscisic acid (ABA)-mediated seed germination. NF-YA overexpression typically led to severe growth retardation and developmental defects, which extended from embryogenesis through to adult plants. Although overexpression of all NF-YA family members consistently led to growth retardation, some transgenic lines were hypersensitive to ABA during germination while others were hyposensitive. The opposing germination phenotypes were associated with the phylogenetic relationships between the NF-YA members. In addition, ABA marker genes were misregulated and ABA induction of gene expression was reduced in the overexpressors. Collectively, this study demonstrates that although NF-Ys have retained high degrees of similarity, they have evolved unique and sometimes opposing roles during plant development.
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Affiliation(s)
- Chamindika L. Siriwardana
- Department of Microbiology and Plant Biology, University of Oklahoma, 770 Van Vleet Oval, GLCH, Room 43, Norman, OK 73019 USA
| | - Roderick W. Kumimoto
- Department of Microbiology and Plant Biology, University of Oklahoma, 770 Van Vleet Oval, GLCH, Room 43, Norman, OK 73019 USA
| | - Daniel S. Jones
- Department of Microbiology and Plant Biology, University of Oklahoma, 770 Van Vleet Oval, GLCH, Room 43, Norman, OK 73019 USA
| | - Ben F. Holt
- Department of Microbiology and Plant Biology, University of Oklahoma, 770 Van Vleet Oval, GLCH, Room 43, Norman, OK 73019 USA
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23
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Dolfini D, Minuzzo M, Pavesi G, Mantovani R. The short isoform of NF-YA belongs to the embryonic stem cell transcription factor circuitry. Stem Cells 2013; 30:2450-9. [PMID: 22969033 DOI: 10.1002/stem.1232] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Totipotency of embryonic stem cells (ESCs) is controlled at the transcriptional level by a handful of transcription factors (TFs) that promote stemness and prevent differentiation. One of the most enriched DNA elements in promoters and enhancers of genes specifically active in ESCs is the CCAAT box, which is recognized by NF-Y, a trimer with histone-like subunits--NF-YB/NF--YC--and the sequence-specific NF-YA. We show that the levels of the short NF-YA isoform--NF-YAs--is high in mouse ESCs (mESCs) and drops after differentiation; a dominant negative mutant affects expression of important stem cells genes, directly and indirectly. Protein transfections of TAT-NF-YAs stimulate growth and compensate for withdrawal of leukemia inhibitory factor (LIF) in cell cultures. Bioinformatic analysis identifies NF-Y sites as highly enriched in genomic loci of stem TFs in ESCs. Specifically, 30%-50% of NANOG peaks have NF-Y sites and indeed NF-Y-binding is required for NANOG association to DNA. These data indicate that NF-Y belongs to the restricted circle of TFs that govern mESCs, and, specifically, that NF-YAs is the active isoform in these cells.
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Affiliation(s)
- Diletta Dolfini
- Dipartimento di Scienze Biomolecolari e Biotecnologie, Università degli Studi di Milano, Milano, Italy
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24
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Nardini M, Gnesutta N, Donati G, Gatta R, Forni C, Fossati A, Vonrhein C, Moras D, Romier C, Bolognesi M, Mantovani R. Sequence-specific transcription factor NF-Y displays histone-like DNA binding and H2B-like ubiquitination. Cell 2013; 152:132-43. [PMID: 23332751 DOI: 10.1016/j.cell.2012.11.047] [Citation(s) in RCA: 212] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Revised: 09/29/2012] [Accepted: 11/20/2012] [Indexed: 12/16/2022]
Abstract
The sequence-specific transcription factor NF-Y binds the CCAAT box, one of the sequence elements most frequently found in eukaryotic promoters. NF-Y is composed of the NF-YA and NF-YB/NF-YC subunits, the latter two hosting histone-fold domains (HFDs). The crystal structure of NF-Y bound to a 25 bp CCAAT oligonucleotide shows that the HFD dimer binds to the DNA sugar-phosphate backbone, mimicking the nucleosome H2A/H2B-DNA assembly. NF-YA both binds to NF-YB/NF-YC and inserts an α helix deeply into the DNA minor groove, providing sequence-specific contacts to the CCAAT box. Structural considerations and mutational data indicate that NF-YB ubiquitination at Lys138 precedes and is equivalent to H2B Lys120 monoubiquitination, important in transcriptional activation. Thus, NF-Y is a sequence-specific transcription factor with nucleosome-like properties of nonspecific DNA binding and helps establish permissive chromatin modifications at CCAAT promoters. Our findings suggest that other HFD-containing proteins may function in similar ways.
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Affiliation(s)
- Marco Nardini
- Dipartimento di BioScienze, Università degli Studi di Milano, Via Celoria 26, 20133 Milano, Italy
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25
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Lima WR, Moraes M, Alves E, Azevedo MF, Passos DO, Garcia CRS. The PfNF-YB transcription factor is a downstream target of melatonin and cAMP signalling in the human malaria parasite Plasmodium falciparum. J Pineal Res 2013; 54:145-53. [PMID: 22804732 DOI: 10.1111/j.1600-079x.2012.01021.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Plasmodium falciparum causes the most severe form of malaria and is responsible for the majority of deaths worldwide. The mechanism of cell cycle control within intra-erythrocytic stages has been examined as a potential means of a promising way to identifying how to stop parasite development in red blood cells. Our group determined that melatonin increases parasitemia in P. falciparum and P. chabaudi through a complex signalling cascade. In vertebrates, melatonin controls the expression of transcription factors, leading us to postulate rather that the indoleamine would affect PfNF-YB expression in human malaria parasites. We show here that PfNF-YB transcription factor is highly expressed and colocalized in the nucleus in mature parasites during intra-erythrocytic stages, thus suggesting an important role in cell division. Moreover, we demonstrate for the first time that melatonin and cAMP modulate the PfNF-YB transcription factor expression in P. falciparum at erythrocytic stages. In addition, PfNF-YB is found to be more ubiquitinated in the presence of melatonin. Finally, the proteasome inhibitor bortezomib is able to modulate PfNF-YB expression as well. Taken together, our dada reinforce the role played by melatonin in the cell cycle control of P. falciparum and point this indolamine as a target to develop new antimalarial drugs.
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Affiliation(s)
- Wânia R Lima
- Departamento de Fisiologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil
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26
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Reynoso MA, Blanco FA, Bailey-Serres J, Crespi M, Zanetti ME. Selective recruitment of mRNAs and miRNAs to polyribosomes in response to rhizobia infection in Medicago truncatula. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2013; 73:289-301. [PMID: 23050939 DOI: 10.1111/tpj.12033] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Revised: 09/14/2012] [Accepted: 09/19/2012] [Indexed: 05/23/2023]
Abstract
Translation of mRNAs is a key regulatory step that contributes to the coordination and modulation of eukaryotic gene expression during development or adaptation to the environment. mRNA stability or translatability can be regulated by the action of small regulatory RNAs (sRNAs), which control diverse biological processes. Under low nitrogen conditions, leguminous plants associate with soil bacteria and develop a new organ specialized in nitrogen fixation: the nodule. To gain insight into the translational regulation of mRNAs during nodule formation, the association of mRNAs and sRNAs to polysomes was characterized in roots of the model legume Medicago truncatula during the symbiotic interaction with Sinorhizobium meliloti. Quantitative comparison of steady-state and polysomal mRNAs for 15 genes involved in nodulation identified a group of transcripts with slight or no change in total cellular abundance that were significantly upregulated at the level of association with polysomes in response to rhizobia. This group included mRNAs encoding receptors like kinases required either for nodule organogenesis, bacterial infection or both, and transcripts encoding GRAS and NF-Y transcription factors (TFs). Quantitative analysis of sRNAs in total and polysomal RNA samples revealed that mature microRNAs (miRNAs) were associated with the translational machinery, notably, miR169 and miR172, which target the NF-YA/HAP2 and AP2 TFs, respectively. Upon inoculation, levels of miR169 pronouncedly decreased in polysomal complexes, concomitant with the increased accumulation of the NF-YA/HAP2 protein. These results indicate that both mRNAs and miRNAs are subject to differential recruitment to polysomes, and expose the importance of selective mRNA translation during root nodule symbiosis.
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Affiliation(s)
- Mauricio Alberto Reynoso
- Instituto de Biotecnología y Biología Molecular, FCE-UNLP CCT-CONICET Calle 115 y 49, C.P. 1900, La Plata, Argentina
| | - Flavio Antonio Blanco
- Instituto de Biotecnología y Biología Molecular, FCE-UNLP CCT-CONICET Calle 115 y 49, C.P. 1900, La Plata, Argentina
| | - Julia Bailey-Serres
- Department of Botany and Plant Sciences, Center for Plant Cell Biology, University of California, Riverside, CA 92521-0124, USA
| | - Martín Crespi
- Institut des Sciences du Végétal, Centre National de la Recherche Scientifique, 91198 Gif sur Yvette Cedex, France
| | - María Eugenia Zanetti
- Instituto de Biotecnología y Biología Molecular, FCE-UNLP CCT-CONICET Calle 115 y 49, C.P. 1900, La Plata, Argentina
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27
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Hsieh YH, Su IJ, Yen CJ, Tsai TF, Tsai HW, Tsai HN, Huang YJ, Chen YY, Ai YL, Kao LY, Hsieh WC, Wu HC, Huang W. Histone deacetylase inhibitor suberoylanilide hydroxamic acid suppresses the pro-oncogenic effects induced by hepatitis B virus pre-S2 mutant oncoprotein and represents a potential chemopreventive agent in high-risk chronic HBV patients. Carcinogenesis 2012; 34:475-85. [PMID: 23172669 DOI: 10.1093/carcin/bgs365] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Chronic hepatitis B virus (HBV) infection is the major cause of hepatocellular carcinoma (HCC). The pre-S(2) mutant large HBV surface antigen (LHBS) in type II ground glass hepatocytes (GGHs) has been recognized as an emerging viral oncoprotein; it directly interacts with the c-Jun activation domain-binding protein 1 (JAB1) and subsequently causes hyperphosphorylation of the tumor-suppressor retinoblastoma and, consequently, leads to disturbed cell cycle progression. The interaction of the pre-S(2) mutant LHBS with JAB1 could provide a potential target for chemoprevention. In this study, we found that the preneoplastic type II GGHs showed a significant decrease of the cyclin-dependent kinase inhibitor p27(Kip1), which serves as a marker for pre-S(2) mutant-JAB1 complex formation. The histone deacetylase (HDAC) inhibitor suberoylanilide hydroxamic acid (SAHA) elevated expression of the tumor-suppressor thioredoxin-binding protein 2 (TBP2), which subsequently enhanced the JAB1-TBP2 interaction and abolished the pre-S(2) mutant LHBS-induced degradation of p27(Kip1), which, in turn, recovered the normal cell cycle checkpoint. The pre-S(2) mutant LHBS-induced pro-oncogenic effects: increased cell proliferation, nuclear/cytoplasmic ratio and proliferating cell nuclear antigen expression, were all greatly ameliorated after SAHA treatments, which suggested SAHA as a promising chemopreventive agent for the pre-S(2) mutant oncoprotein-induced HCC. In conclusion, this study provides the mechanism of histone deacetylase (HDAC) inhibitor in preventing the pre-S(2) mutant-induced oncogenic phenotype. The HDAC inhibitor SAHA is therefore a potential chemopreventive agent for high-risk chronic HBV patients who may develop HCC.
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Affiliation(s)
- Yi-Hsuan Hsieh
- The Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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28
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Leyva-González MA, Ibarra-Laclette E, Cruz-Ramírez A, Herrera-Estrella L. Functional and transcriptome analysis reveals an acclimatization strategy for abiotic stress tolerance mediated by Arabidopsis NF-YA family members. PLoS One 2012; 7:e48138. [PMID: 23118940 PMCID: PMC3485258 DOI: 10.1371/journal.pone.0048138] [Citation(s) in RCA: 111] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Accepted: 09/20/2012] [Indexed: 11/22/2022] Open
Abstract
Nuclear Factor Y (NF-Y) is a heterotrimeric complex formed by NF-YA/NF-YB/NF-YC subunits that binds to the CCAAT-box in eukaryotic promoters. In contrast to other organisms, in which a single gene encodes each subunit, in plants gene families of over 10 members encode each of the subunits. Here we report that five members of the Arabidopsis thaliana NF-YA family are strongly induced by several stress conditions via transcriptional and miR169-related post-transcriptional mechanisms. Overexpression of NF-YA2, 7 and 10 resulted in dwarf late-senescent plants with enhanced tolerance to several types of abiotic stress. These phenotypes are related to alterations in sucrose/starch balance and cell elongation observed in NF-YA overexpressing plants. The use of transcriptomic analysis of transgenic plants that express miR169-resistant versions of NF-YA2, 3, 7, and 10 under an estradiol inducible system, as well as a dominant-repressor version of NF-YA2 revealed a set of genes, whose promoters are enriched in NF-Y binding sites (CCAAT-box) and that may be directly regulated by the NF-Y complex. This analysis also suggests that NF-YAs could participate in modulating gene regulation through positive and negative mechanisms. We propose a model in which the increase in NF-YA transcript levels in response to abiotic stress is part of an adaptive response to adverse environmental conditions in which a reduction in plant growth rate plays a key role.
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Affiliation(s)
| | | | | | - Luis Herrera-Estrella
- Laboratorio Nacional de Genómica para la Biodiversidad (LANGEBIO), Centro de Investigación y Estudios Avanzados Irapuato, Irapuato, Guanajuato, México
- * E-mail:
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29
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Windram O, Madhou P, McHattie S, Hill C, Hickman R, Cooke E, Jenkins DJ, Penfold CA, Baxter L, Breeze E, Kiddle SJ, Rhodes J, Atwell S, Kliebenstein DJ, Kim YS, Stegle O, Borgwardt K, Zhang C, Tabrett A, Legaie R, Moore J, Finkenstadt B, Wild DL, Mead A, Rand D, Beynon J, Ott S, Buchanan-Wollaston V, Denby KJ. Arabidopsis defense against Botrytis cinerea: chronology and regulation deciphered by high-resolution temporal transcriptomic analysis. THE PLANT CELL 2012; 24:3530-57. [PMID: 23023172 PMCID: PMC3480286 DOI: 10.1105/tpc.112.102046] [Citation(s) in RCA: 253] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Revised: 08/14/2012] [Accepted: 09/07/2012] [Indexed: 05/18/2023]
Abstract
Transcriptional reprogramming forms a major part of a plant's response to pathogen infection. Many individual components and pathways operating during plant defense have been identified, but our knowledge of how these different components interact is still rudimentary. We generated a high-resolution time series of gene expression profiles from a single Arabidopsis thaliana leaf during infection by the necrotrophic fungal pathogen Botrytis cinerea. Approximately one-third of the Arabidopsis genome is differentially expressed during the first 48 h after infection, with the majority of changes in gene expression occurring before significant lesion development. We used computational tools to obtain a detailed chronology of the defense response against B. cinerea, highlighting the times at which signaling and metabolic processes change, and identify transcription factor families operating at different times after infection. Motif enrichment and network inference predicted regulatory interactions, and testing of one such prediction identified a role for TGA3 in defense against necrotrophic pathogens. These data provide an unprecedented level of detail about transcriptional changes during a defense response and are suited to systems biology analyses to generate predictive models of the gene regulatory networks mediating the Arabidopsis response to B. cinerea.
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Affiliation(s)
- Oliver Windram
- School of Life Sciences, University of Warwick, Coventry CV4 7AL, United Kingdom
| | | | - Stuart McHattie
- Warwick Systems Biology Centre, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Claire Hill
- School of Life Sciences, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Richard Hickman
- Warwick Systems Biology Centre, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Emma Cooke
- Molecular Organization and Assembly of Cells Doctoral Training Centre, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Dafyd J. Jenkins
- Warwick Systems Biology Centre, University of Warwick, Coventry CV4 7AL, United Kingdom
| | | | - Laura Baxter
- Warwick Systems Biology Centre, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Emily Breeze
- School of Life Sciences, University of Warwick, Coventry CV4 7AL, United Kingdom
- Warwick Systems Biology Centre, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Steven J. Kiddle
- Warwick Systems Biology Centre, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Johanna Rhodes
- School of Life Sciences, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Susanna Atwell
- Department of Plant Sciences, University of California, Davis, California 95616
| | | | - Youn-sung Kim
- School of Life Sciences, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Oliver Stegle
- Max Planck Institute for Developmental Biology and Max Planck Institute for Intelligent Systems, 72076 Tuebingen, Germany
| | - Karsten Borgwardt
- Max Planck Institute for Developmental Biology and Max Planck Institute for Intelligent Systems, 72076 Tuebingen, Germany
- Zentrum für Bioinformatik, Eberhard Karls Universität, 72076 Tuebingen, Germany
| | - Cunjin Zhang
- School of Life Sciences, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Alex Tabrett
- School of Life Sciences, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Roxane Legaie
- Warwick Systems Biology Centre, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Jonathan Moore
- Warwick Systems Biology Centre, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Bärbel Finkenstadt
- Department of Statistics, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - David L. Wild
- Warwick Systems Biology Centre, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Andrew Mead
- School of Life Sciences, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - David Rand
- Warwick Systems Biology Centre, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Jim Beynon
- School of Life Sciences, University of Warwick, Coventry CV4 7AL, United Kingdom
- Warwick Systems Biology Centre, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Sascha Ott
- Warwick Systems Biology Centre, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Vicky Buchanan-Wollaston
- School of Life Sciences, University of Warwick, Coventry CV4 7AL, United Kingdom
- Warwick Systems Biology Centre, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Katherine J. Denby
- School of Life Sciences, University of Warwick, Coventry CV4 7AL, United Kingdom
- Warwick Systems Biology Centre, University of Warwick, Coventry CV4 7AL, United Kingdom
- Address correspondence to
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30
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Mende S, Royer L, Herr A, Schmiedel J, Deschauer M, Klopstock T, Kostic VS, Schroeder M, Reichmann H, Storch A. Whole blood genome-wide expression profiling and network analysis suggest MELAS master regulators. Neurol Res 2012; 33:638-55. [PMID: 21708074 DOI: 10.1179/1743132810y.0000000016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
BACKGROUND The heteroplasmic mitochondrial DNA (mtDNA) mutation A3243G causes the mitochondrial encephalomyopathy, lactic acidosis, and stroke-like episodes (MELAS) syndrome as one of the most frequent mitochondrial diseases. The process of reconfiguration of nuclear gene expression profile to accommodate cellular processes to the functional status of mitochondria might be a key to MELAS disease manifestation and could contribute to its diverse phenotypic presentation. OBJECTIVE To determine master regulatory protein networks and disease-modifying genes in MELAS syndrome. METHODS Analyses of whole blood transcriptomes from 10 MELAS patients using a novel strategy by combining classic Affymetrix oligonucleotide microarray profiling with regulatory and protein interaction network analyses. RESULTS Hierarchical cluster analysis elucidated that the relative abundance of mutant mtDNA molecules is decisive for the nuclear gene expression response. Further analyses confirmed not only transcription factors already known to be involved in mitochondrial diseases (such as TFAM), but also detected the hypoxia-inducible factor 1 complex, nuclear factor Y and cAMP responsive element-binding protein-related transcription factors as novel master regulators for reconfiguration of nuclear gene expression in response to the MELAS mutation. Correlation analyses of gene alterations and clinico-genetic data detected significant correlations between A3243G-induced nuclear gene expression changes and mutant mtDNA load as well as disease characteristics. These potential disease-modifying genes influencing the expression of the MELAS phenotype are mainly related to clusters primarily unrelated to cellular energy metabolism, but important for nucleic acid and protein metabolism, and signal transduction. DISCUSSION Our data thus provide a framework to search for new pathogenetic concepts and potential therapeutic approaches to treat the MELAS syndrome.
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Affiliation(s)
- Susanne Mende
- Department of Neurology, Dresden University of Technology, Germany
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31
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Goeman F, Manni I, Artuso S, Ramachandran B, Toietta G, Bossi G, Rando G, Cencioni C, Germoni S, Straino S, Capogrossi MC, Bacchetti S, Maggi A, Sacchi A, Ciana P, Piaggio G. Molecular imaging of nuclear factor-Y transcriptional activity maps proliferation sites in live animals. Mol Biol Cell 2012; 23:1467-1474. [PMID: 22379106 PMCID: PMC3327325 DOI: 10.1091/mbc.e12-01-0039] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2012] [Revised: 02/10/2012] [Accepted: 02/22/2012] [Indexed: 12/01/2022] Open
Abstract
In vivo imaging involving the use of genetically engineered animals is an innovative powerful tool for the noninvasive assessment of the molecular and cellular events that are often targets of therapy. On the basis of the knowledge that the activity of the nuclear factor-Y (NF-Y) transcription factor is restricted in vitro to proliferating cells, we have generated a transgenic reporter mouse, called MITO-Luc (for mitosis-luciferase), in which an NF-Y-dependent promoter controls luciferase expression. In these mice, bioluminescence imaging of NF-Y activity visualizes areas of physiological cell proliferation and regeneration during response to injury. Using this tool, we highlight for the first time a role of NF-Y activity on hepatocyte proliferation during liver regeneration. MITO-Luc reporter mice should facilitate investigations into the involvement of genes in cell proliferation and provide a useful model for studying aberrant proliferation in disease pathogenesis. They should be also useful in the development of new anti/proproliferative drugs and assessment of their efficacy and side effects on nontarget tissues.
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Affiliation(s)
- Frauke Goeman
- Experimental Oncology Department, Istituto Regina Elena, 00158 Rome, Italy
| | - Isabella Manni
- Experimental Oncology Department, Istituto Regina Elena, 00158 Rome, Italy
| | - Simona Artuso
- Experimental Oncology Department, Istituto Regina Elena, 00158 Rome, Italy
| | - Balaji Ramachandran
- Department of Pharmacological Sciences, University of Milan, 20133 Milan, Italy
| | - Gabriele Toietta
- Laboratorio di Patologia Vascolare, Istituto Dermopatico dell'Immacolata, IRCCS, 00167 Rome, Italy
| | - Gianluca Bossi
- Experimental Oncology Department, Istituto Regina Elena, 00158 Rome, Italy
| | - Gianpaolo Rando
- Department of Pharmacological Sciences, University of Milan, 20133 Milan, Italy
| | - Chiara Cencioni
- Laboratorio di Biologia Vascolare e Medicina Rigenerativa, Centro Cardiologico, Monzino-IRCCS, 20138 Milan, Italy
| | | | - Stefania Straino
- Laboratorio di Patologia Vascolare, Istituto Dermopatico dell'Immacolata, IRCCS, 00167 Rome, Italy
| | - Maurizio C. Capogrossi
- Laboratorio di Patologia Vascolare, Istituto Dermopatico dell'Immacolata, IRCCS, 00167 Rome, Italy
| | - Silvia Bacchetti
- Experimental Oncology Department, Istituto Regina Elena, 00158 Rome, Italy
| | - Adriana Maggi
- Department of Pharmacological Sciences, University of Milan, 20133 Milan, Italy
| | - Ada Sacchi
- Experimental Oncology Department, Istituto Regina Elena, 00158 Rome, Italy
| | - Paolo Ciana
- Department of Pharmacological Sciences, University of Milan, 20133 Milan, Italy
| | - Giulia Piaggio
- Experimental Oncology Department, Istituto Regina Elena, 00158 Rome, Italy
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32
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Xu H, Fu J, Ha SW, Ju D, Zheng J, Li L, Xie Y. The CCAAT box-binding transcription factor NF-Y regulates basal expression of human proteasome genes. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2012; 1823:818-25. [PMID: 22285817 DOI: 10.1016/j.bbamcr.2012.01.002] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 11/26/2011] [Revised: 01/08/2012] [Accepted: 01/09/2012] [Indexed: 01/04/2023]
Abstract
Protein degradation by the proteasome plays an important role in all major cellular pathways. Aberrant proteasome activity is associated with numerous human diseases including cancer and neurological disorders, but the underlying mechanism is virtually unclear. At least part of the reason for this is due to lack of understanding of the regulation of human proteasome genes. In this study, we found that a large set of human proteasome genes carry the CCAAT box in their promoters. We further demonstrated that the basal expression of these CCAAT box-containing proteasome genes is regulated by the transcription factor NF-Y. Knockdown of NF-YA, an essential subunit of NF-Y, reduced proteasome gene expression and compromised the cellular proteasome activity. In addition, we showed that knockdown of NF-YA sensitized breast cancer cells to the proteasome inhibitor MG132. This study unveils a new role for NF-Y in the regulation of human proteasome genes and suggests that NF-Y may be a potential target for cancer therapy.
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Affiliation(s)
- Haiming Xu
- Barbara Ann Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, MI 48201, USA
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Dolfini D, Gatta R, Mantovani R. NF-Y and the transcriptional activation of CCAAT promoters. Crit Rev Biochem Mol Biol 2011; 47:29-49. [PMID: 22050321 DOI: 10.3109/10409238.2011.628970] [Citation(s) in RCA: 189] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The CCAAT box promoter element and NF-Y, the transcription factor (TF) that binds to it, were among the first cis-elements and trans-acting factors identified; their interplay is required for transcriptional activation of a sizeable number of eukaryotic genes. NF-Y consists of three evolutionarily conserved subunits: a dimer of NF-YB and NF-YC which closely resembles a histone, and the "innovative" NF-YA. In this review, we will provide an update on the functional and biological features that make NF-Y a fundamental link between chromatin and transcription. The last 25 years have witnessed a spectacular increase in our knowledge of how genes are regulated: from the identification of cis-acting sequences in promoters and enhancers, and the biochemical characterization of the corresponding TFs, to the merging of chromatin studies with the investigation of enzymatic machines that regulate epigenetic states. Originally identified and studied in yeast and mammals, NF-Y - also termed CBF and CP1 - is composed of three subunits, NF-YA, NF-YB and NF-YC. The complex recognizes the CCAAT pentanucleotide and specific flanking nucleotides with high specificity (Dorn et al., 1997; Hatamochi et al., 1988; Hooft van Huijsduijnen et al, 1987; Kim & Sheffery, 1990). A compelling set of bioinformatics studies clarified that the NF-Y preferred binding site is one of the most frequent promoter elements (Suzuki et al., 2001, 2004; Elkon et al., 2003; Mariño-Ramírez et al., 2004; FitzGerald et al., 2004; Linhart et al., 2005; Zhu et al., 2005; Lee et al., 2007; Abnizova et al., 2007; Grskovic et al., 2007; Halperin et al., 2009; Häkkinen et al., 2011). The same consensus, as determined by mutagenesis and SELEX studies (Bi et al., 1997), was also retrieved in ChIP-on-chip analysis (Testa et al., 2005; Ceribelli et al., 2006; Ceribelli et al., 2008; Reed et al., 2008). Additional structural features of the CCAAT box - position, orientation, presence of multiple Transcriptional Start Sites - were previously reviewed (Dolfini et al., 2009) and will not be considered in detail here.
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Affiliation(s)
- Diletta Dolfini
- Dipartimento di Scienze Biomolecolari e Biotecnologie, Università degli Studi di Milano, Milan, Italy
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The tumour antigen PRAME is a subunit of a Cul2 ubiquitin ligase and associates with active NFY promoters. EMBO J 2011; 30:3786-98. [PMID: 21822215 DOI: 10.1038/emboj.2011.262] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2011] [Accepted: 07/04/2011] [Indexed: 12/27/2022] Open
Abstract
The human tumour antigen PRAME (preferentially expressed antigen of melanoma) is frequently overexpressed in tumours. High PRAME levels correlate with poor clinical outcome of several cancers, but the mechanisms by which PRAME could be involved in tumourigenesis remain largely elusive. We applied protein-complex purification strategies and identified PRAME as a substrate recognition subunit of a Cullin2-based E3 ubiquitin ligase. PRAME can be recruited to DNA in vitro, and genome-wide chromatin immunoprecipitation experiments revealed that PRAME is specifically enriched at transcriptionally active promoters that are also bound by NFY and at enhancers. Our results are consistent with a role for the PRAME ubiquitin ligase complex in NFY-mediated transcriptional regulation.
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van der Watt PJ, Leaner VD. The nuclear exporter, Crm1, is regulated by NFY and Sp1 in cancer cells and repressed by p53 in response to DNA damage. BIOCHIMICA ET BIOPHYSICA ACTA 2011; 1809:316-26. [PMID: 21683812 DOI: 10.1016/j.bbagrm.2011.05.017] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2011] [Revised: 05/20/2011] [Accepted: 05/27/2011] [Indexed: 01/19/2023]
Abstract
The nuclear exporter protein, Crm1, plays a key role in normal cell functioning, mediating the nucleo-cytoplasmic transport of cargo proteins. Elevated Crm1 expression has recently been identified in various tumours; however, the mechanisms driving its expression have not been investigated to date. In this study we identified the Crm1 promoter and factors associated with its elevated expression and with its repression under conditions of DNA damage. The -1405 to +99 Crm1 promoter region was found to be significantly more active in cancer and transformed cells compared to normal, and the -175 to +99 region identified as responsible for the differential activity. Mutation of two CCAAT boxes and a GC box within this region significantly diminished Crm1 promoter activity and ChIP analysis revealed binding of NFY and Sp1 to these sites, with increased binding in transformed and cancer cells. In addition, p53 was found to repress Crm1 promoter activity, after induction with doxorubicin, with p53 siRNA blocking the effect. Crm1 promoter constructs with mutated CCAAT boxes were significantly less responsive to p53 repression, and in vivo binding of NFY to the CCAAT boxes was diminished upon p53 binding, suggesting that p53 mediates repression of the Crm1 promoter via interfering with NFY. This was confirmed using NFY knock-down cells, in which Crm1 promoter activity was significantly less responsive to p53. In vitro EMSAs revealed that NFY and p53 bind the CCAAT boxes as a single complex under conditions of DNA damage. In summary, this study is a first to analyse Crm1 promoter regulation and reveals NFY and Sp1 as contributors to Crm1 overexpression in cancer. In addition, this study reveals that Crm1 transcription is inhibited by DNA damage and that the mechanism of inhibition involves p53 interfering with NFY function.
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Affiliation(s)
- Pauline J van der Watt
- Institute of Infectious Disease and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
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Abstract
Transcription of genomic loci containing protein-coding genes often yields not only cognate mRNAs but also assorted non-coding RNAs (ncRNAs), which typically map in the vicinity of transcription start sites. A new study demonstrates that far from being random byproducts of gene expression, many long ncRNAs (lncRNAs) are synthesized in a coordinate fashion and control important cellular processes, such as survival in the face of DNA damage.
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Affiliation(s)
- Elena Sotillo
- Division of Cancer Pathobiology, Department of Pathology & Laboratory Medicine, The Children's Hospital of Philadelphia and University of Pennsylvania, Philadelphia, PA
| | - Andrei Thomas-Tikhonenko
- Division of Cancer Pathobiology, Department of Pathology & Laboratory Medicine, The Children's Hospital of Philadelphia and University of Pennsylvania, Philadelphia, PA
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Hughes R, Kristiansen M, Lassot I, Desagher S, Mantovani R, Ham J. NF-Y is essential for expression of the proapoptotic bim gene in sympathetic neurons. Cell Death Differ 2011; 18:937-47. [PMID: 21164521 PMCID: PMC3061225 DOI: 10.1038/cdd.2010.166] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2010] [Revised: 10/18/2010] [Accepted: 11/12/2010] [Indexed: 01/05/2023] Open
Abstract
Neuronal apoptosis has a major role during development and aberrant apoptosis contributes to the pathology of certain neurological conditions. Studies with nerve growth factor (NGF)-dependent sympathetic neurons have provided important insights into the molecular mechanisms of neuronal apoptosis and the signalling pathways that regulate the cell death programme in neurons. The BH3-only protein Bim is a critical mediator of apoptosis in many cell types and in sympathetic neurons is required for NGF withdrawal-induced death. However, regulation of bim expression is complex and remains incompletely understood. We report that a conserved inverted CCAAT box (ICB) in the rat bim promoter is bound by the heterotrimeric transcription factor NF-Y. Interestingly, NF-Y is required for bim promoter activity and its induction following NGF withdrawal. We demonstrate that NF-Y activity is essential for endogenous Bim expression and contributes to NGF withdrawal-induced death. Furthermore, we find that the transcriptional coactivators CBP and p300 interact with NF-Y and FOXO3a and bind to this region of the bim promoter. The amount of CBP/p300 bound to bim increases after NGF deprivation and inhibition of CBP/p300 activity reduces bim induction. Our results indicate that NF-Y cooperates with FOXO3a to recruit CBP/p300 to the bim promoter to form a stable multi-protein/DNA complex that activates bim transcription after survival factor withdrawal.
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Affiliation(s)
- R Hughes
- Molecular Haematology and Cancer Biology Unit, Institute of Child Health, University College London, London, UK
| | - M Kristiansen
- Molecular Haematology and Cancer Biology Unit, Institute of Child Health, University College London, London, UK
| | - I Lassot
- Institut de Génétique Moléculaire de Montpellier, Université Montpellier 1, Université Montpellier 2, Montpellier, France
| | - S Desagher
- Institut de Génétique Moléculaire de Montpellier, Université Montpellier 1, Université Montpellier 2, Montpellier, France
| | - R Mantovani
- Dipartimento di Scienze Biomolecolari e Biotecnologie, Università degli Studi di Milano, Milan, Italy
| | - J Ham
- Molecular Haematology and Cancer Biology Unit, Institute of Child Health, University College London, London, UK
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Gurtner A, Fuschi P, Martelli F, Manni I, Artuso S, Simonte G, Ambrosino V, Antonini A, Folgiero V, Falcioni R, Sacchi A, Piaggio G. Transcription factor NF-Y induces apoptosis in cells expressing wild-type p53 through E2F1 upregulation and p53 activation. Cancer Res 2010; 70:9711-20. [PMID: 20952509 DOI: 10.1158/0008-5472.can-10-0721] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The CCAAT-binding transcription factor NF-Y plays a central role in regulating cellular proliferation by controlling the expression of genes required for cell-cycle progression such as cyclin A, cyclin B1, cyclin B2, cdc25A, cdc25C, and cdk1. Here we show that unrestricted NF-Y activity leads to apoptosis in an E2F1- and wild-type p53 (wtp53)-dependent manner. Unrestricted NF-Y activity induced an increase in E2F1 mRNA and protein levels. Furthermore, NF-Y directly bound the E2F1 promoter and this correlated with the appearance of open chromatin marks. The ability of NF-Y to induce apoptosis was impaired in cells lacking E2F1 and wtp53. Moreover, NF-Y overexpression elicited phosphorylation of wt p53Ser18 in an E2F1-dependent manner. Our findings establish that NF-Y acts upstream of E2F1 in p53-mediated apoptosis.
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Affiliation(s)
- Aymone Gurtner
- Experimental Oncology Department, Istituto Regina Elena, IRCCS, Rome, Italy
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Yang J, Huang J, Chatterjee TK, Twait E, Fisher RA. A novel mechanism involving coordinated regulation of nuclear levels and acetylation of NF-YA and Bcl6 activates RGS4 transcription. J Biol Chem 2010; 285:29760-9. [PMID: 20630860 PMCID: PMC2943308 DOI: 10.1074/jbc.m110.121459] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2010] [Revised: 07/13/2010] [Indexed: 11/06/2022] Open
Abstract
Neuronally enriched RGS4 plays a critical role attenuating G protein signaling in brain, although the mechanisms regulating RGS4 expression are unknown. Here we describe a novel mechanism for transcriptional activation of RGS4 in neuron-like PC6 cells, where RGS4 is markedly induced during confluence-induced growth arrest. Transcriptional activation of RGS4 in confluent PC6 cells was accompanied by impaired G(i/o)-dependent MAPK activation. In the human RGS4 gene promoter, we identified three phylogenetically conserved cis-elements: an inverted CCAAT box element (ICE), a cAMP response element, and a B-cell lymphoma 6 (Bcl6)-binding site. The ICE and the cAMP response element mediate activation, and the Bcl6 site mediates repression of RGS4 transcription. Activation of RGS4 transcription in confluent PC6 cells is accompanied by increases in NF-YA and C/EBPβ and decreases in Bcl6 levels in the nucleus. Increases in NF-YA and C/EBPβ lead to their increased binding to the RGS4 promoter in vivo, and dominant negative forms of these proteins repressed RGS4 promoter activity. Acetylation of NF-YA and Bcl6 were increased in postconfluent cells. Trichostatin A stimulation of RGS4 promoter activity, accompanied by increased binding of NF-YA and decreased binding of Bcl6 to the promoter, was abolished by mutation of the ICE and enhanced by mutation of the Bcl6 site. These findings demonstrate a dynamic and coordinated regulation of nuclear levels and acetylation status of trans-acting factors critical in determining the off/on state of the RGS4 promoter.
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Affiliation(s)
| | - Jie Huang
- From the Departments of Pharmacology and
| | - Tapan K. Chatterjee
- the Department of Internal Medicine, University of Cincinnati, Cincinnati, Ohio 45221
| | - Erik Twait
- Surgery, University of Iowa Carver College of Medicine, Iowa City, Iowa 52242 and
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Wang W, Di X, Torti SV, Torti FM. Ferritin H induction by histone deacetylase inhibitors. Biochem Pharmacol 2010; 80:316-24. [PMID: 20385107 PMCID: PMC2913600 DOI: 10.1016/j.bcp.2010.04.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2010] [Revised: 04/01/2010] [Accepted: 04/02/2010] [Indexed: 12/27/2022]
Abstract
Because both iron deficiency and iron excess are deleterious to normal cell function, the intracellular level of iron must be tightly controlled. Ferritin, an iron binding protein, regulates iron balance by storing iron in a bioavailable but nontoxic form. Ferritin protein comprises two subunits: ferritin H, which contains ferroxidase activity, and ferritin L. Here we demonstrate that ferritin H mRNA and protein are induced by histone deacetylase inhibitors (HDAC inhibitors), a promising class of anti-cancer drugs, in cultured human cancer cells. Deletion analysis and EMSA assays reveal that the induction of ferritin H occurs at a transcriptional level via Sp1 and NF-Y binding sites near the transcriptional start site of the human ferritin H promoter. Classically, HDAC inhibitors modulate gene expression by increasing histone acetylation. However, ChIP assays demonstrate that HDAC inhibitors induce ferritin H transcription by increasing NF-Y binding to the ferritin H promoter without changes in histone acetylation. These results identify ferritin H as a new target of HDAC inhibitors, and recruitment of NF-Y as a novel mechanism of action of HDAC inhibitors.
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Affiliation(s)
- Wei Wang
- Department of Cancer Biology, Wake Forest University School of Medicine, Winston-Salem, NC 27157
| | - Xiumin Di
- Department of Cancer Biology, Wake Forest University School of Medicine, Winston-Salem, NC 27157
| | - Suzy V. Torti
- Department of Biochemistry, Wake Forest University School of Medicine, Winston-Salem, NC 27157
- Comprehensive Cancer Center, Wake Forest University School of Medicine, Winston-Salem, NC 27157
| | - Frank M. Torti
- Department of Cancer Biology, Wake Forest University School of Medicine, Winston-Salem, NC 27157
- Comprehensive Cancer Center, Wake Forest University School of Medicine, Winston-Salem, NC 27157
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TAT-mediated transduction of NF-Ya peptide induces the ex vivo proliferation and engraftment potential of human hematopoietic progenitor cells. Blood 2010; 116:2676-83. [PMID: 20616221 DOI: 10.1182/blood-2010-03-273441] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Retroviral overexpression of NF-Ya, the regulatory subunit of the transcription factor NF-Y, activates the transcription of multiple genes implicated in hematopoietic stem cell (HSC) self-renewal and differentiation and directs HSCs toward self-renewal. We asked whether TAT-NF-Ya fusion protein could be used to transduce human CD34(+) cells as a safer, more regulated alternative approach to gene therapy. Here we show that externally added recombinant protein was able to enter the cell nucleus and activate HOXB4, a target gene of NF-Ya, using real-time polymerase chain reaction RNA and luciferase-based protein assays. After TAT-NF-Ya transduction, the proliferation of human CD34(+) cells in the presence of myeloid cytokines was increased 4-fold. Moreover, TAT-NF-Ya-treated human primary bone marrow cells showed a 4-fold increase in the percentage of huCD45(+) cells recovered from the bone marrow of sublethally irradiated, transplanted NOD-Scid IL2Rγ(null) mice. These data demonstrate that TAT-peptide therapies are an alternative approach to retroviral stem cell therapies and suggest that NF-Ya peptide delivery should be further evaluated as a tool for HSC/progenitors ex vivo expansion and therapy.
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43
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Brosh R, Rotter V. Transcriptional control of the proliferation cluster by the tumor suppressor p53. ACTA ACUST UNITED AC 2010; 6:17-29. [DOI: 10.1039/b911416e] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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NF-Y influences directionality of transcription from the bidirectional Mrps12/Sarsm promoter in both mouse and human cells. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2009; 1789:432-42. [DOI: 10.1016/j.bbagrm.2009.05.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2009] [Revised: 04/30/2009] [Accepted: 05/04/2009] [Indexed: 11/18/2022]
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