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Han S, Yue W, Bao A, Jiao T, Liu Y, Zeng H, Song K, Wu M, Guo L. OsCSN2 orchestrates Oryza sativa L. growth and development through modulation of the GA and BR pathways. Funct Integr Genomics 2024; 24:39. [PMID: 38381201 DOI: 10.1007/s10142-024-01320-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 01/19/2024] [Accepted: 02/13/2024] [Indexed: 02/22/2024]
Abstract
The COP9 signalosome (CSN) is a conserved protein complex found in higher eukaryotes, consisting of eight subunits, and it plays a crucial role in regulating various processes of plant growth and development. Among these subunits, CSN2 is one of the most conserved components within the COP9 signalosome complex. Despite its prior identification in other species, its specific function in Oryza sativa L. (Rice) has remained poorly understood. In this study, we investigated the role of CSN2 in rice using gene editing CRISPR/Cas9 technology and overexpression techniques. We created two types of mutants: the oscsn2 mutant and the OsCSN2-OE mutant, both in the background of rice, and also generated point mutants of OsCSN2 (OsCSN2K64E, OsCSN2K67E, OsCSN2K71E and OsCSN2K104E) to further explore the regulatory function of OsCSN2. Phenotypic observation and gene expression analysis were conducted on plants from the generated mutants, tracking their growth from the seedling to the heading stages. The results showed that the loss and modification of OsCSN2 had limited effects on plant growth and development during the early stages of both the wild-type and mutant plants. However, as the plants grew to 60 days, significant differences emerged. The OsCSN2 point mutants exhibited increased tillering compared to the OsCSN2-OE mutant plants, which were already at the tillering stage. On the other hand, the OsCSN2 point mutant had already progressed to the heading and flowering stages, with the shorter plants. These results, along with functional predictions of the OsCSN2 protein, indicated that changes in the 64th, 67th, 71st, and 104th amino acids of OsCSN2 affected its ubiquitination site, influencing the ubiquitination function of CSN and consequently impacting the degradation of the DELLA protein SLR1. Taken together, it can be speculated that OsCSN2 plays a key role in GA and BR pathways by influencing the functional regulation of the transcription factor SLR1 in CSN, thereby affecting the growth and development of rice and the number of tillers.
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Affiliation(s)
- Shining Han
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, People's Republic of China
| | - Weijie Yue
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, People's Republic of China
| | - Anar Bao
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, People's Republic of China
| | - Tongtong Jiao
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, People's Republic of China
| | - Yanxi Liu
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, People's Republic of China
| | - Hua Zeng
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, People's Republic of China
| | - Kai Song
- School of Life Science, Changchun Normal University, Changchun, 130032, People's Republic of China
| | - Ming Wu
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, People's Republic of China.
| | - Liquan Guo
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, People's Republic of China.
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Eckey M, Kraft F, Kob R, Escher N, Asim M, Fischer H, Fritsche MK, Melle C, Baniahmad A. The corepressor activity of Alien is controlled by CREB-binding protein/p300. FEBS J 2013; 280:1861-8. [DOI: 10.1111/febs.12211] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2012] [Revised: 02/13/2013] [Accepted: 02/14/2013] [Indexed: 12/22/2022]
Affiliation(s)
- Maren Eckey
- Institute for Human Genetics; Jena University Hospital; Germany
| | - Florian Kraft
- Institute for Human Genetics; Jena University Hospital; Germany
| | - Robert Kob
- Institute for Human Genetics; Jena University Hospital; Germany
| | - Niko Escher
- Institute for Human Genetics; Jena University Hospital; Germany
| | - Mohammad Asim
- Institute for Human Genetics; Jena University Hospital; Germany
| | - Heike Fischer
- Institute for Human Genetics; Jena University Hospital; Germany
| | | | - Christian Melle
- Biomolecular Photonics Group; Jena University Hospital; Germany
| | - Aria Baniahmad
- Institute for Human Genetics; Jena University Hospital; Germany
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Ludwig S, Klitzsch A, Baniahmad A. The ING tumor suppressors in cellular senescence and chromatin. Cell Biosci 2011; 1:25. [PMID: 21767350 PMCID: PMC3154856 DOI: 10.1186/2045-3701-1-25] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2011] [Accepted: 07/18/2011] [Indexed: 12/19/2022] Open
Abstract
The Inhibitor of Growth (ING) proteins represent a type II tumor suppressor family comprising five conserved genes, ING1 to ING5. While ING1, ING2 and ING3 proteins are stable components of the mSIN3a-HDAC complexes, the association of ING1, ING4 and ING5 with HAT protein complexes was also reported. Among these the ING1 and ING2 have been analyzed more deeply. Similar to other tumor suppressor factors the ING proteins are also involved in many cellular pathways linked to cancer and cell proliferation such as cell cycle regulation, cellular senescence, DNA repair, apoptosis, inhibition of angiogenesis and modulation of chromatin. A common structural feature of ING factors is the conserved plant homeodomain (PHD), which can bind directly to the histone mark trimethylated lysine of histone H3 (H3K4me3). PHD mutants lose the ability to undergo cellular senescence linking chromatin mark recognition with cellular senescence. ING1 and ING2 are localized in the cell nucleus and associated with chromatin modifying enzymes, linking tumor suppression directly to chromatin regulation. In line with this, the expression of ING1 in tumors is aberrant or identified point mutations are mostly localized in the PHD finger and affect histone binding. Interestingly, ING1 protein levels increase in replicative senescent cells, latter representing an efficient pathway to inhibit cancer proliferation. In association with this, suppression of p33ING1 expression prolongs replicative life span and is also sufficient to bypass oncogene-induced senescence. Recent analyses of ING1- and ING2-deficient mice confirm a tumor suppressive role of ING1 and ING2 and also indicate an essential role of ING2 in meiosis. Here we summarize the activity of ING1 and ING2 as tumor suppressors, chromatin factors and in development.
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Affiliation(s)
- Susann Ludwig
- Institute of Human Genetics, Jena University Hospital, D-07743 Jena, Germany.
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Baniahmad A. The corepressor Alien as a novel tumor suppressor? Horm Mol Biol Clin Investig 2011; 5:11-5. [PMID: 25961239 DOI: 10.1515/hmbci.2010.074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2010] [Accepted: 11/16/2010] [Indexed: 11/15/2022]
Abstract
Alien has been characterized as a corepressor for nuclear hormone receptors that harbor a silencing domain such as the thyroid hormone receptor (TR), the vitamin D3 receptor (VDR) and DAX-1. In addition, the androgen receptor (AR), a steroid hormone receptor, interacts with Alien. Alien enhances gene silencing mediated by TR, VDR and DAX-1, whereas Alien inhibits AR-mediated transactivation. The inhibition of AR by Alien seems to be restricted to cases where AR is bound to AR antagonists. In line with this, Alien inhibits AR target gene expression and human prostate cancer cell proliferation in an antagonist-specific manner indicating that Alien has an inhibitory role for cell cycle progression. Alien mediates gene silencing by recruitment of histone deacetylase activity and interestingly through nucleo-some assembly activity. Hereby, Alien enhances nucleosome positioning mediated by nucleosome assembly protein 1, which suggests a novel molecular mechanism of corepressor function. Using a proteomic approach to identify Alien interacting partners, we detected the cell cycle factor E2F1 to bind to Alien in vivo. The E2F1-mediated transactivation and E2F target gene expression is inhibited by Alien, and in line with this Alien is observed to repress cell cycle progression.
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Paliouras M, Zaman N, Lumbroso R, Kapogeorgakis L, Beitel LK, Wang E, Trifiro M. Dynamic rewiring of the androgen receptor protein interaction network correlates with prostate cancer clinical outcomes. Integr Biol (Camb) 2011; 3:1020-32. [DOI: 10.1039/c1ib00038a] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Murzik U, Hemmerich P, Weidtkamp-Peters S, Ulbricht T, Bussen W, Hentschel J, von Eggeling F, Melle C. Rad54B targeting to DNA double-strand break repair sites requires complex formation with S100A11. Mol Biol Cell 2008; 19:2926-35. [PMID: 18463164 PMCID: PMC2441681 DOI: 10.1091/mbc.e07-11-1167] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2007] [Revised: 03/14/2008] [Accepted: 04/24/2008] [Indexed: 12/25/2022] Open
Abstract
S100A11 is involved in a variety of intracellular activities such as growth regulation and differentiation. To gain more insight into the physiological role of endogenously expressed S100A11, we used a proteomic approach to detect and identify interacting proteins in vivo. Hereby, we were able to detect a specific interaction between S100A11 and Rad54B, which could be confirmed under in vivo conditions. Rad54B, a DNA-dependent ATPase, is described to be involved in recombinational repair of DNA damage, including DNA double-strand breaks (DSBs). Treatment with bleomycin, which induces DSBs, revealed an increase in the degree of colocalization between S100A11 and Rad54B. Furthermore, S100A11/Rad54B foci are spatially associated with sites of DNA DSB repair. Furthermore, while the expression of p21(WAF1/CIP1) was increased in parallel with DNA damage, its protein level was drastically down-regulated in damaged cells after S100A11 knockdown. Down-regulation of S100A11 by RNA interference also abolished Rad54B targeting to DSBs. Additionally, S100A11 down-regulated HaCaT cells showed a restricted proliferation capacity and an increase of the apoptotic cell fraction. These observations suggest that S100A11 targets Rad54B to sites of DNA DSB repair sites and identify a novel function for S100A11 in p21-based regulation of cell cycle.
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Affiliation(s)
- Ulrike Murzik
- *Core Unit Chip Application (CUCA), Institute of Human Genetics and Anthropology, Medical Faculty, Friedrich-Schiller-University, 07740 Jena, Germany
| | - Peter Hemmerich
- Department of Molecular Biology, Fritz Lipmann Institut (FLI), Leibniz Institute for Age Research, 07708 Jena, Germany; and
| | - Stefanie Weidtkamp-Peters
- Department of Molecular Biology, Fritz Lipmann Institut (FLI), Leibniz Institute for Age Research, 07708 Jena, Germany; and
| | - Tobias Ulbricht
- Department of Molecular Biology, Fritz Lipmann Institut (FLI), Leibniz Institute for Age Research, 07708 Jena, Germany; and
| | - Wendy Bussen
- Department of Molecular Biophysics and Biochemistry, Yale University School of Medicine, New Haven, CT 06515
| | - Julia Hentschel
- *Core Unit Chip Application (CUCA), Institute of Human Genetics and Anthropology, Medical Faculty, Friedrich-Schiller-University, 07740 Jena, Germany
| | - Ferdinand von Eggeling
- *Core Unit Chip Application (CUCA), Institute of Human Genetics and Anthropology, Medical Faculty, Friedrich-Schiller-University, 07740 Jena, Germany
| | - Christian Melle
- *Core Unit Chip Application (CUCA), Institute of Human Genetics and Anthropology, Medical Faculty, Friedrich-Schiller-University, 07740 Jena, Germany
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Papaioannou M, Melle C, Baniahmad A. The coregulator Alien. NUCLEAR RECEPTOR SIGNALING 2007; 5:e008. [PMID: 18174916 PMCID: PMC2121318 DOI: 10.1621/nrs.05008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2007] [Accepted: 08/27/2007] [Indexed: 11/28/2022]
Abstract
Alien has characteristics of a corepressor for selected members of the nuclear hormone receptor (NHR) superfamily and also for transcription factors involved in cell cycle regulation and DNA repair. Alien mediates gene silencing and represses the transactivation of specific NHRs and other transcription factors to modulate hormone response and cell proliferation. Alien is a highly conserved protein and is expressed in a wide variety of tissues. Knockout of the gene encoding Alien in mice is embryonic lethal at a very early stage, indicating an important evolutionary role in multicellular organisms. From a mechanistic perspective, the corepressor function of Alien is in part mediated by histone deacetylase (HDAC) activity. In addition, Alien seems to modulate nucleosome assembly activity. This suggests that Alien is acting on chromatin not only through recruitment of histone-modifying activities, but also through enhancing nucleosome assembly.
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Affiliation(s)
- Maria Papaioannou
- Molecular Genetics, Institute of Human Genetics and Anthropology, Friedrich-Schiller-University, Jena, Germany
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Fegers I, Kob R, Eckey M, Schmidt O, Goeman F, Papaioannou M, Escher N, von Eggeling F, Melle C, Baniahmad A. The Tumor Suppressors p33ING1 and p33ING2 Interact with Alien in Vivo and Enhance Alien-Mediated Gene Silencing. J Proteome Res 2007; 6:4182-8. [DOI: 10.1021/pr070219d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Inga Fegers
- Molecular Genetics, Institute of Human Genetics and Anthropology, University Jena, 07740 Jena, Germany, Department of Biochemistry, University Kuopio, Finland, and Core Unit Chip Application (CUCA), Institute of Human Genetics and Anthropology, Friedrich-Schiller-University, 07740 Jena, Germany
| | - Robert Kob
- Molecular Genetics, Institute of Human Genetics and Anthropology, University Jena, 07740 Jena, Germany, Department of Biochemistry, University Kuopio, Finland, and Core Unit Chip Application (CUCA), Institute of Human Genetics and Anthropology, Friedrich-Schiller-University, 07740 Jena, Germany
| | - Maren Eckey
- Molecular Genetics, Institute of Human Genetics and Anthropology, University Jena, 07740 Jena, Germany, Department of Biochemistry, University Kuopio, Finland, and Core Unit Chip Application (CUCA), Institute of Human Genetics and Anthropology, Friedrich-Schiller-University, 07740 Jena, Germany
| | - Oliver Schmidt
- Molecular Genetics, Institute of Human Genetics and Anthropology, University Jena, 07740 Jena, Germany, Department of Biochemistry, University Kuopio, Finland, and Core Unit Chip Application (CUCA), Institute of Human Genetics and Anthropology, Friedrich-Schiller-University, 07740 Jena, Germany
| | - Frauke Goeman
- Molecular Genetics, Institute of Human Genetics and Anthropology, University Jena, 07740 Jena, Germany, Department of Biochemistry, University Kuopio, Finland, and Core Unit Chip Application (CUCA), Institute of Human Genetics and Anthropology, Friedrich-Schiller-University, 07740 Jena, Germany
| | - Maria Papaioannou
- Molecular Genetics, Institute of Human Genetics and Anthropology, University Jena, 07740 Jena, Germany, Department of Biochemistry, University Kuopio, Finland, and Core Unit Chip Application (CUCA), Institute of Human Genetics and Anthropology, Friedrich-Schiller-University, 07740 Jena, Germany
| | - Niko Escher
- Molecular Genetics, Institute of Human Genetics and Anthropology, University Jena, 07740 Jena, Germany, Department of Biochemistry, University Kuopio, Finland, and Core Unit Chip Application (CUCA), Institute of Human Genetics and Anthropology, Friedrich-Schiller-University, 07740 Jena, Germany
| | - Ferdinand von Eggeling
- Molecular Genetics, Institute of Human Genetics and Anthropology, University Jena, 07740 Jena, Germany, Department of Biochemistry, University Kuopio, Finland, and Core Unit Chip Application (CUCA), Institute of Human Genetics and Anthropology, Friedrich-Schiller-University, 07740 Jena, Germany
| | - Christian Melle
- Molecular Genetics, Institute of Human Genetics and Anthropology, University Jena, 07740 Jena, Germany, Department of Biochemistry, University Kuopio, Finland, and Core Unit Chip Application (CUCA), Institute of Human Genetics and Anthropology, Friedrich-Schiller-University, 07740 Jena, Germany
| | - Aria Baniahmad
- Molecular Genetics, Institute of Human Genetics and Anthropology, University Jena, 07740 Jena, Germany, Department of Biochemistry, University Kuopio, Finland, and Core Unit Chip Application (CUCA), Institute of Human Genetics and Anthropology, Friedrich-Schiller-University, 07740 Jena, Germany
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Tenbaum SP, Papaioannou M, Reeb CA, Goeman F, Escher N, Kob R, von Eggeling F, Melle C, Baniahmad A. Alien inhibits E2F1 gene expression and cell proliferation. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2007; 1773:1447-54. [PMID: 17570542 DOI: 10.1016/j.bbamcr.2007.04.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2007] [Revised: 04/25/2007] [Accepted: 04/28/2007] [Indexed: 12/24/2022]
Abstract
Recently, using a proteomic approach we have identified the corepressor Alien as a novel interacting factor of the cell cycle regulator E2F1. Unclear was whether this interaction influences cell proliferation and endogenous E2F1 target gene expression. Here, we show by chromatin immunoprecipitation (ChIP) that Alien is recruited in vivo to the E2F binding sites present in the E2F1 gene promoter, inhibits the transactivation of E2F1 and represses endogenous E2F1 gene expression. Interestingly, using synchronized cells to assess the expression of Alien profile during cell cycle the levels of endogenous Alien are increased during G1, G1/S and G2 phase. Furthermore, stable transfection of Alien leads to reduction of cell proliferation. Thus, the data suggest that Alien acts as a corepressor for E2F1 and is involved in cell cycle regulation.
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Affiliation(s)
- Stephan P Tenbaum
- Molecular Genetics, Institute of Human Genetics and Anthropology, Friedrich-Schiller-University, 07740 Jena, Germany
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