101
|
Elevating CDCA3 levels in non-small cell lung cancer enhances sensitivity to platinum-based chemotherapy. Commun Biol 2021; 4:638. [PMID: 34050247 PMCID: PMC8163776 DOI: 10.1038/s42003-021-02136-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Accepted: 04/19/2021] [Indexed: 12/14/2022] Open
Abstract
Platinum-based chemotherapy remains the cornerstone of treatment for most non-small cell lung cancer (NSCLC) cases either as maintenance therapy or in combination with immunotherapy. However, resistance remains a primary issue. Our findings point to the possibility of exploiting levels of cell division cycle associated protein-3 (CDCA3) to improve response of NSCLC tumours to therapy. We demonstrate that in patients and in vitro analyses, CDCA3 levels correlate with measures of genome instability and platinum sensitivity, whereby CDCA3high tumours are sensitive to cisplatin and carboplatin. In NSCLC, CDCA3 protein levels are regulated by the ubiquitin ligase APC/C and cofactor Cdh1. Here, we identified that the degradation of CDCA3 is modulated by activity of casein kinase 2 (CK2) which promotes an interaction between CDCA3 and Cdh1. Supporting this, pharmacological inhibition of CK2 with CX-4945 disrupts CDCA3 degradation, elevating CDCA3 levels and increasing sensitivity to platinum agents. We propose that combining CK2 inhibitors with platinum-based chemotherapy could enhance platinum efficacy in CDCA3low NSCLC tumours and benefit patients. Kildey et al find that high levels of mitotic regulator CDCA3 correlates with sensitivity to platinum agents in non-small cell lung cancer patients and cell lines. They show that interfering with CDCA3 degradation through CK2 inhibition enhances CDCA3 levels and increases sensitivity to platinum agents suggesting a therapeutic route.
Collapse
|
102
|
Winiewska-Szajewska M, Maciejewska AM, Speina E, Poznański J, Paprocki D. Synthesis of Novel Halogenated Heterocycles Based on o-Phenylenediamine and Their Interactions with the Catalytic Subunit of Protein Kinase CK2. Molecules 2021; 26:molecules26113163. [PMID: 34070615 PMCID: PMC8198750 DOI: 10.3390/molecules26113163] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 05/18/2021] [Accepted: 05/22/2021] [Indexed: 01/07/2023] Open
Abstract
Protein kinase CK2 is a highly pleiotropic protein kinase capable of phosphorylating hundreds of protein substrates. It is involved in numerous cellular functions, including cell viability, apoptosis, cell proliferation and survival, angiogenesis, or ER-stress response. As CK2 activity is found perturbed in many pathological states, including cancers, it becomes an attractive target for the pharma. A large number of low-mass ATP-competitive inhibitors have already been developed, the majority of them halogenated. We tested the binding of six series of halogenated heterocyclic ligands derived from the commercially available 4,5-dihalo-benzene-1,2-diamines. These ligand series were selected to enable the separation of the scaffold effect from the hydrophobic interactions attributed directly to the presence of halogen atoms. In silico molecular docking was initially applied to test the capability of each ligand for binding at the ATP-binding site of CK2. HPLC-derived ligand hydrophobicity data are compared with the binding affinity assessed by low-volume differential scanning fluorimetry (nanoDSF). We identified three promising ligand scaffolds, two of which have not yet been described as CK2 inhibitors but may lead to potent CK2 kinase inhibitors. The inhibitory activity against CK2α and toxicity against four reference cell lines have been determined for eight compounds identified as the most promising in nanoDSF assay.
Collapse
|
103
|
Chan LY, Du J, Craik DJ. Tuning the Anti-Angiogenic Effect of the P15 Peptide Using Cyclic Trypsin Inhibitor Scaffolds. ACS Chem Biol 2021; 16:829-837. [PMID: 33881318 DOI: 10.1021/acschembio.0c00907] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Angiogenesis is important for tumor growth, and accordingly, targeting angiogenesis has become an important pathway for antitumor therapy. A novel proapoptotic peptide, CIGB-300 (P15-Tat), has been shown to be involved in the casein kinase II phosphorylation pathway, conferring it with antiangiogenic activity. Cyclic peptides have been widely used as scaffolds in drug design studies due to their high stability and favorable biopharmaceutical properties. Here, we chose two very stable cyclic trypsin inhibitors, MCoTI-II and SFTI-1, as frameworks to incorporate the bioactive epitope P15 into various backbone loops. NMR studies revealed that all re-engineered analogs had similar secondary structures to their native cyclic frameworks. One key analog, MCoP15, displayed significant improvement for inhibiting human umbilical vein endothelial cell migration, was nontoxic, and had higher stability than the P15 epitope alone. Overall, the results show the value of P15 being engineered into cyclic trypsin inhibitor scaffolds for improving antiangiogenic activity and stability. More broadly, the study highlights the versatility of cyclic peptide frameworks in drug design for antiangiogenic therapies.
Collapse
Affiliation(s)
- Lai Yue Chan
- Institute for Molecular Bioscience, Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Junqiao Du
- Institute for Molecular Bioscience, Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, The University of Queensland, Brisbane, QLD 4072, Australia
| | - David J. Craik
- Institute for Molecular Bioscience, Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, The University of Queensland, Brisbane, QLD 4072, Australia
| |
Collapse
|
104
|
Liu T, Lv YF, Zhao JL, You QD, Jiang ZY. Regulation of Nrf2 by phosphorylation: Consequences for biological function and therapeutic implications. Free Radic Biol Med 2021; 168:129-141. [PMID: 33794311 DOI: 10.1016/j.freeradbiomed.2021.03.034] [Citation(s) in RCA: 80] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 03/22/2021] [Accepted: 03/25/2021] [Indexed: 12/18/2022]
Abstract
The transcription factor nuclear factor erythroid-derived 2-like 2 (NRF2) participates in the activation of the antioxidant cytoprotective pathway and other important physiological processes to maintain cellular homeostasis. The dysregulation of NRF2 activity plays a role in various diseases, such as cardiovascular diseases, neurodegenerative diseases, and cancer. Thus, NRF2 activity is tightly regulated through multiple mechanisms, among which phosphorylation by kinases is critical in the posttranslational regulation of NRF2. For instance, PKC, casein kinase 2, and AMP-activated kinase positively, while GSK-3 negatively regulates NRF2 activity through phosphorylation of different sites. Here, we provide an overview of the phosphorylation regulation pattern of NRF2 and discuss the therapeutic potential of interventions targeting NRF2 phosphorylation.
Collapse
Affiliation(s)
- Tian Liu
- State Key Laboratory of Natural Medicines, And Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China
| | - Yi-Fei Lv
- State Key Laboratory of Natural Medicines, And Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China
| | - Jing-Long Zhao
- State Key Laboratory of Natural Medicines, And Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China
| | - Qi-Dong You
- State Key Laboratory of Natural Medicines, And Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China.
| | - Zheng-Yu Jiang
- State Key Laboratory of Natural Medicines, And Jiang Su Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China.
| |
Collapse
|
105
|
Protein kinase CK2: a potential therapeutic target for diverse human diseases. Signal Transduct Target Ther 2021; 6:183. [PMID: 33994545 PMCID: PMC8126563 DOI: 10.1038/s41392-021-00567-7] [Citation(s) in RCA: 153] [Impact Index Per Article: 51.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 03/19/2021] [Accepted: 03/22/2021] [Indexed: 02/04/2023] Open
Abstract
CK2 is a constitutively active Ser/Thr protein kinase, which phosphorylates hundreds of substrates, controls several signaling pathways, and is implicated in a plethora of human diseases. Its best documented role is in cancer, where it regulates practically all malignant hallmarks. Other well-known functions of CK2 are in human infections; in particular, several viruses exploit host cell CK2 for their life cycle. Very recently, also SARS-CoV-2, the virus responsible for the COVID-19 pandemic, has been found to enhance CK2 activity and to induce the phosphorylation of several CK2 substrates (either viral and host proteins). CK2 is also considered an emerging target for neurological diseases, inflammation and autoimmune disorders, diverse ophthalmic pathologies, diabetes, and obesity. In addition, CK2 activity has been associated with cardiovascular diseases, as cardiac ischemia-reperfusion injury, atherosclerosis, and cardiac hypertrophy. The hypothesis of considering CK2 inhibition for cystic fibrosis therapies has been also entertained for many years. Moreover, psychiatric disorders and syndromes due to CK2 mutations have been recently identified. On these bases, CK2 is emerging as an increasingly attractive target in various fields of human medicine, with the advantage that several very specific and effective inhibitors are already available. Here, we review the literature on CK2 implication in different human pathologies and evaluate its potential as a pharmacological target in the light of the most recent findings.
Collapse
|
106
|
Dominguez I, Cruz-Gamero JM, Corasolla V, Dacher N, Rangasamy S, Urbani A, Narayanan V, Rebholz H. Okur-Chung neurodevelopmental syndrome-linked CK2α variants have reduced kinase activity. Hum Genet 2021; 140:1077-1096. [PMID: 33944995 DOI: 10.1007/s00439-021-02280-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Accepted: 03/31/2021] [Indexed: 12/22/2022]
Abstract
The Okur-Chung neurodevelopmental syndrome, or OCNDS, is a newly discovered rare neurodevelopmental disorder. It is characterized by developmental delay, intellectual disability, behavioral problems (hyperactivity, repetitive movements and social interaction deficits), hypotonia, epilepsy and language/verbalization deficits. OCNDS is linked to de novo mutations in CSNK2A1, that lead to missense or deletion/truncating variants in the encoded protein, the protein kinase CK2α. Eighteen different missense CK2α mutations have been identified to date; however, no biochemical or cell biological studies have yet been performed to clarify the functional impact of such mutations. Here, we show that 15 different missense CK2α mutations lead to varying degrees of loss of kinase activity as recombinant purified proteins and when mutants are ectopically expressed in mammalian cells. We further detect changes in the phosphoproteome of three patient-derived fibroblast lines and show that the subcellular localization of CK2α is altered for some of the OCNDS-linked variants and in patient-derived fibroblasts. Our data argue that reduced kinase activity and abnormal localization of CK2α may underlie the OCNDS phenotype.
Collapse
Affiliation(s)
- I Dominguez
- Department of Medicine, Boston University School of Medicine, Boston, MA, 02118, USA
| | - J M Cruz-Gamero
- Institut de Psychiatrie et Neurosciences de Paris (IPNP), UMR S1266, INSERM, Université de Paris, Paris, France
| | - V Corasolla
- Laboratorio di Proteomica e Metabonomica, CERC-Fondazione S.Lucia, Via del Fosso di Fiorano 64, 00143, Roma, Italy
| | - N Dacher
- Institut de Psychiatrie et Neurosciences de Paris (IPNP), UMR S1266, INSERM, Université de Paris, Paris, France
| | - S Rangasamy
- Translational Genomics Research Institute (TGen), Phoenix, AZ, 85004, USA
| | - A Urbani
- Dipartimento di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168, Roma, Italy.,Fondazione Policlinico Universitario A. Gemelli-IRCCS, 00168, Roma, Italy
| | - V Narayanan
- Translational Genomics Research Institute (TGen), Phoenix, AZ, 85004, USA
| | - H Rebholz
- Institut de Psychiatrie et Neurosciences de Paris (IPNP), UMR S1266, INSERM, Université de Paris, Paris, France. .,Dipartimento di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168, Roma, Italy. .,GHU Psychiatrie et Neurosciences, Paris, France. .,Center of Neurodegeneration, Faculty of Medicine, Danube Private University, Krems, Austria.
| |
Collapse
|
107
|
Borgo C, D'Amore C, Cesaro L, Sarno S, Pinna LA, Ruzzene M, Salvi M. How can a traffic light properly work if it is always green? The paradox of CK2 signaling. Crit Rev Biochem Mol Biol 2021; 56:321-359. [PMID: 33843388 DOI: 10.1080/10409238.2021.1908951] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
CK2 is a constitutively active protein kinase that assuring a constant level of phosphorylation to its numerous substrates supports many of the most important biological functions. Nevertheless, its activity has to be controlled and adjusted in order to cope with the varying needs of a cell, and several examples of a fine-tune regulation of its activity have been described. More importantly, aberrant regulation of this enzyme may have pathological consequences, e.g. in cancer, chronic inflammation, neurodegeneration, and viral infection. Our review aims at summarizing our current knowledge about CK2 regulation. In the first part, we have considered the most important stimuli shown to affect protein kinase CK2 activity/expression. In the second part, we focus on the molecular mechanisms by which CK2 can be regulated, discussing controversial aspects and future perspectives.
Collapse
Affiliation(s)
- Christian Borgo
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Claudio D'Amore
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Luca Cesaro
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Stefania Sarno
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Lorenzo A Pinna
- Department of Biomedical Sciences, University of Padova, Padova, Italy.,CNR Institute of Neurosciences, Padova, Italy
| | - Maria Ruzzene
- Department of Biomedical Sciences, University of Padova, Padova, Italy.,CNR Institute of Neurosciences, Padova, Italy
| | - Mauro Salvi
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| |
Collapse
|
108
|
Baier A, Kokel A, Horton W, Gizińska E, Pandey G, Szyszka R, Török B, Török M. Organofluorine Hydrazone Derivatives as Multifunctional Anti-Alzheimer's Agents with CK2 Inhibitory and Antioxidant Features. ChemMedChem 2021; 16:1927-1932. [PMID: 33713036 DOI: 10.1002/cmdc.202100047] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Indexed: 11/10/2022]
Abstract
A set of novel hydrazone derivatives were synthesized and analyzed for their biological activities. The compounds were tested for their inhibitory effect on the phosphorylating activity of the protein kinase CK2, and their antioxidant activity was also determined in three commonly used assays. The hydrazones were evaluated for their radical scavenging against the DPPH, ABTS and peroxyl radicals. Several compounds have been identified as good antioxidants as well as potent protein kinase CK2 inhibitors. Most hydrazones containing a 4-N(CH3 )2 residue or perfluorinated phenyl rings showed high activity in the radical-scavenging assays and possess nanomolar IC50 values in the kinase assays.
Collapse
Affiliation(s)
- Andrea Baier
- Department of Animal Physiology and Toxicology, The John Paul II Catholic University of Lublin, ul. Konstantynów 1i, 20-708, Lublin, Poland
| | - Anne Kokel
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Blvd, Boston, MA, 02125, USA
| | - William Horton
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Blvd, Boston, MA, 02125, USA
| | - Ewa Gizińska
- Department of Molecular Biology, The John Paul II Catholic University of Lublin, ul. Konstantynów 1i, 20-708, Lublin, Poland
| | - Garima Pandey
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Blvd, Boston, MA, 02125, USA
| | - Ryszard Szyszka
- Department of Molecular Biology, The John Paul II Catholic University of Lublin, ul. Konstantynów 1i, 20-708, Lublin, Poland
| | - Béla Török
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Blvd, Boston, MA, 02125, USA
| | - Marianna Török
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Blvd, Boston, MA, 02125, USA
| |
Collapse
|
109
|
Hitz E, Grüninger O, Passecker A, Wyss M, Scheurer C, Wittlin S, Beck HP, Brancucci NMB, Voss TS. The catalytic subunit of Plasmodium falciparum casein kinase 2 is essential for gametocytogenesis. Commun Biol 2021; 4:336. [PMID: 33712726 PMCID: PMC7954856 DOI: 10.1038/s42003-021-01873-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 02/17/2021] [Indexed: 01/31/2023] Open
Abstract
Casein kinase 2 (CK2) is a pleiotropic kinase phosphorylating substrates in different cellular compartments in eukaryotes. In the malaria parasite Plasmodium falciparum, PfCK2 is vital for asexual proliferation of blood-stage parasites. Here, we applied CRISPR/Cas9-based gene editing to investigate the function of the PfCK2α catalytic subunit in gametocytes, the sexual forms of the parasite that are essential for malaria transmission. We show that PfCK2α localizes to the nucleus and cytoplasm in asexual and sexual parasites alike. Conditional knockdown of PfCK2α expression prevented the transition of stage IV into transmission-competent stage V gametocytes, whereas the conditional knockout of pfck2a completely blocked gametocyte maturation already at an earlier stage of sexual differentiation. In summary, our results demonstrate that PfCK2α is not only essential for asexual but also sexual development of P. falciparum blood-stage parasites and encourage studies exploring PfCK2α as a potential target for dual-active antimalarial drugs.
Collapse
Affiliation(s)
- Eva Hitz
- grid.416786.a0000 0004 0587 0574Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, 4051 Basel, Switzerland ,grid.6612.30000 0004 1937 0642University of Basel, 4001 Basel, Switzerland
| | - Olivia Grüninger
- grid.416786.a0000 0004 0587 0574Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, 4051 Basel, Switzerland ,grid.6612.30000 0004 1937 0642University of Basel, 4001 Basel, Switzerland
| | - Armin Passecker
- grid.416786.a0000 0004 0587 0574Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, 4051 Basel, Switzerland ,grid.6612.30000 0004 1937 0642University of Basel, 4001 Basel, Switzerland
| | - Matthias Wyss
- grid.416786.a0000 0004 0587 0574Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, 4051 Basel, Switzerland ,grid.6612.30000 0004 1937 0642University of Basel, 4001 Basel, Switzerland
| | - Christian Scheurer
- grid.416786.a0000 0004 0587 0574Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, 4051 Basel, Switzerland ,grid.6612.30000 0004 1937 0642University of Basel, 4001 Basel, Switzerland
| | - Sergio Wittlin
- grid.416786.a0000 0004 0587 0574Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, 4051 Basel, Switzerland ,grid.6612.30000 0004 1937 0642University of Basel, 4001 Basel, Switzerland
| | - Hans-Peter Beck
- grid.416786.a0000 0004 0587 0574Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, 4051 Basel, Switzerland ,grid.6612.30000 0004 1937 0642University of Basel, 4001 Basel, Switzerland
| | - Nicolas M. B. Brancucci
- grid.416786.a0000 0004 0587 0574Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, 4051 Basel, Switzerland ,grid.6612.30000 0004 1937 0642University of Basel, 4001 Basel, Switzerland
| | - Till S. Voss
- grid.416786.a0000 0004 0587 0574Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, 4051 Basel, Switzerland ,grid.6612.30000 0004 1937 0642University of Basel, 4001 Basel, Switzerland
| |
Collapse
|
110
|
Czapinska H, Winiewska-Szajewska M, Szymaniec-Rutkowska A, Piasecka A, Bochtler M, Poznański J. Halogen Atoms in the Protein-Ligand System. Structural and Thermodynamic Studies of the Binding of Bromobenzotriazoles by the Catalytic Subunit of Human Protein Kinase CK2. J Phys Chem B 2021; 125:2491-2503. [PMID: 33689348 PMCID: PMC8041304 DOI: 10.1021/acs.jpcb.0c10264] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
![]()
Binding of a family
of brominated benzotriazoles to the catalytic
subunit of human protein kinase CK2 (hCK2α) was used as a model
system to assess the contribution of halogen bonding to protein–ligand
interaction. CK2 is a constitutively active pleiotropic serine/threonine
protein kinase that belongs to the CMGC group of eukaryotic protein
kinases (EPKs). Due to the addiction of some cancer cells, CK2 is
an attractive and well-characterized drug target. Halogenated benzotriazoles
act as ATP-competitive inhibitors with unexpectedly good selectivity
for CK2 over other EPKs. We have characterized the interaction of
bromobenzotriazoles with hCK2α by X-ray crystallography, low-volume
differential scanning fluorimetry, and isothermal titration calorimetry.
Properties of free ligands in solution were additionally characterized
by volumetric and RT-HPLC measurements. Thermodynamic data indicate
that the affinity increases with bromo substitution, with greater
contributions from 5- and 6-substituents than 4- and 7-substituents.
Except for 4,7-disubstituted compounds, the bromobenzotriazoles adopt
a canonical pose with the triazole close to lysine 68, which precludes
halogen bonding. More highly substituted benzotriazoles adopt many
additional noncanonical poses, presumably driven by a large hydrophobic
contribution to binding. Some noncanonical ligand orientations allow
the formation of halogen bonds with the hinge region. Consistent with
a predominantly hydrophobic interaction, the isobaric heat capacity
decreases upon ligand binding, the more so the higher the substitution.
Collapse
Affiliation(s)
- Honorata Czapinska
- Institute of Biochemistry and Biophysics PAS, Pawińskiego 5a, 02-106 Warsaw, Poland.,International Institute of Molecular and Cell Biology, Trojdena 4, 02-109 Warsaw, Poland
| | - Maria Winiewska-Szajewska
- Institute of Biochemistry and Biophysics PAS, Pawińskiego 5a, 02-106 Warsaw, Poland.,Department of Biophysics, Institute of Experimental Physics, University of Warsaw, Pasteura 5, 02-089 Warsaw, Poland
| | | | - Anna Piasecka
- Institute of Biochemistry and Biophysics PAS, Pawińskiego 5a, 02-106 Warsaw, Poland.,International Institute of Molecular and Cell Biology, Trojdena 4, 02-109 Warsaw, Poland
| | - Matthias Bochtler
- Institute of Biochemistry and Biophysics PAS, Pawińskiego 5a, 02-106 Warsaw, Poland.,International Institute of Molecular and Cell Biology, Trojdena 4, 02-109 Warsaw, Poland
| | - Jarosław Poznański
- Institute of Biochemistry and Biophysics PAS, Pawińskiego 5a, 02-106 Warsaw, Poland
| |
Collapse
|
111
|
Klink M, Rahman MA, Song C, Dhanyamraju PK, Ehudin M, Ding Y, Steffens S, Bhadauria P, Iyer S, Aliaga C, Desai D, Huang S, Claxton D, Sharma A, Gowda C. Mechanistic Basis for In Vivo Therapeutic Efficacy of CK2 Inhibitor CX-4945 in Acute Myeloid Leukemia. Cancers (Basel) 2021; 13:cancers13051127. [PMID: 33807974 PMCID: PMC7975325 DOI: 10.3390/cancers13051127] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 02/19/2021] [Accepted: 02/28/2021] [Indexed: 12/22/2022] Open
Abstract
Simple Summary Acute Myeloid Leukemia is an aggressive disease with poor outcomes. New targeted therapies that can boost the effects of currently used chemotherapy medications without added toxicity are needed. Targeting an overactive kinase, called the protein Kinase CK2 in AML, helps leukemia cells undergo cell death and helps certain chemotherapy drugs work better. Here, we present evidence that CX-4945, a CK2 inhibitor drug, effectively kills leukemia cells in mouse models and shows the mechanism of action responsible for these effects. Leukemia cells are more sensitive to a decrease in CK2 kinase levels than normal cells. Our results show that inhibiting CK2 kinase makes AML cells more susceptible to anthracycline-induced cell death. Anthracyclines like daunorubicin and doxorubicin are widely used to treat leukemia in children and adults. A rational combination of protein kinase CK2 inhibitors with the standard of care chemotherapy may help treat AML more effectively. Abstract Protein Kinase CK2 (Casein Kinase 2 or CK2) is a constitutively active serine-threonine kinase overactive in human malignancies. Increased expression and activity of CK2 in Acute Myeloid Leukemia (AML) is associated with a poor outcome. CK2 promotes AML cell survival by impinging on multiple oncogenic signaling pathways. The selective small-molecule CK2 inhibitor CX-4945 has shown in vitro cytotoxicity in AML. Here, we report that CX-4945 has a strong in vivo therapeutic effect in preclinical models of AML. The analysis of genome-wide DNA-binding and gene expression in CX-4945 treated AML cells shows that one mechanism, by which CK2 inhibition exerts a therapeutic effect in AML, involves the revival of IKAROS tumor suppressor function. CK2 phosphorylates IKAROS and disrupts IKAROS’ transcriptional activity by impairing DNA-binding and association with chromatin modifiers. Here, we demonstrate that CK2 inhibition decreases IKAROS phosphorylation and restores IKAROS binding to DNA. Further functional experiments show that IKAROS negatively regulates the transcription of anti-apoptotic genes, including BCL-XL (B cell Lymphoma like–2 like 1, BCL2L1). CX-4945 restitutes the IKAROS-mediated repression of BCL-XL in vivo and sensitizes AML cells to apoptosis. Using CX-4945, alongside the cytotoxic chemotherapeutic drug daunorubicin, augments BCL-XL suppression and AML cell apoptosis. Overall, these results establish the in vivo therapeutic efficacy of CX-4945 in AML preclinical models and determine the role of CK2 and IKAROS in regulating apoptosis in AML. Furthermore, our study provides functional and mechanistic bases for the addition of CK2 inhibitors to AML therapy.
Collapse
Affiliation(s)
- Morgann Klink
- Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (M.K.); (M.A.R.); (C.S.); (P.K.D.); (M.E.); (Y.D.); (S.S.); (P.B.); (S.I.); (S.H.)
| | - Mohammad Atiqur Rahman
- Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (M.K.); (M.A.R.); (C.S.); (P.K.D.); (M.E.); (Y.D.); (S.S.); (P.B.); (S.I.); (S.H.)
| | - Chunhua Song
- Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (M.K.); (M.A.R.); (C.S.); (P.K.D.); (M.E.); (Y.D.); (S.S.); (P.B.); (S.I.); (S.H.)
- Department of Medicine, Ohio State University College of Medicine, Columbus, OH 43210, USA
| | - Pavan Kumar Dhanyamraju
- Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (M.K.); (M.A.R.); (C.S.); (P.K.D.); (M.E.); (Y.D.); (S.S.); (P.B.); (S.I.); (S.H.)
| | - Melanie Ehudin
- Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (M.K.); (M.A.R.); (C.S.); (P.K.D.); (M.E.); (Y.D.); (S.S.); (P.B.); (S.I.); (S.H.)
| | - Yali Ding
- Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (M.K.); (M.A.R.); (C.S.); (P.K.D.); (M.E.); (Y.D.); (S.S.); (P.B.); (S.I.); (S.H.)
| | - Sadie Steffens
- Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (M.K.); (M.A.R.); (C.S.); (P.K.D.); (M.E.); (Y.D.); (S.S.); (P.B.); (S.I.); (S.H.)
| | - Preeti Bhadauria
- Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (M.K.); (M.A.R.); (C.S.); (P.K.D.); (M.E.); (Y.D.); (S.S.); (P.B.); (S.I.); (S.H.)
| | - Soumya Iyer
- Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (M.K.); (M.A.R.); (C.S.); (P.K.D.); (M.E.); (Y.D.); (S.S.); (P.B.); (S.I.); (S.H.)
- Department of Radiation Oncology, University of Chicago,Chicago, IL 60607, USA
| | - Cesar Aliaga
- Department of Medicine, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (C.A.); (D.C.)
| | - Dhimant Desai
- Department of Pharmacology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (D.D.); (A.S.)
| | - Suming Huang
- Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (M.K.); (M.A.R.); (C.S.); (P.K.D.); (M.E.); (Y.D.); (S.S.); (P.B.); (S.I.); (S.H.)
| | - David Claxton
- Department of Medicine, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (C.A.); (D.C.)
| | - Arati Sharma
- Department of Pharmacology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (D.D.); (A.S.)
| | - Chandrika Gowda
- Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (M.K.); (M.A.R.); (C.S.); (P.K.D.); (M.E.); (Y.D.); (S.S.); (P.B.); (S.I.); (S.H.)
- Correspondence: ; Tel.: 717-531-6012; Fax: 717-531-4789
| |
Collapse
|
112
|
Lee S, Kim J, Jo J, Chang JW, Sim J, Yun H. Recent advances in development of hetero-bivalent kinase inhibitors. Eur J Med Chem 2021; 216:113318. [PMID: 33730624 DOI: 10.1016/j.ejmech.2021.113318] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 02/16/2021] [Accepted: 02/16/2021] [Indexed: 12/13/2022]
Abstract
Identifying a pharmacological agent that targets only one of more than 500 kinases present in humans is an important challenge. One potential solution to this problem is the development of bivalent kinase inhibitors, which consist of two connected fragments, each bind to a dissimilar binding site of the bisubstrate enzyme. The main advantage of bivalent (type V) kinase inhibitors is generating more interactions with target enzymes that can enhance the molecules' selectivity and affinity compared to single-site inhibitors. Earlier type V inhibitors were not suitable for the cellular environment and were mostly used in in vitro studies. However, recently developed bivalent compounds have high kinase affinity, high biological and chemical stability in vivo. This review summarized the hetero-bivalent kinase inhibitors described in the literature from 2014 to the present. We attempted to classify the molecules by serine/threonine and tyrosine kinase inhibitors, and then each target kinase and its hetero-bivalent inhibitor was assessed in depth. In addition, we discussed the analysis of advantages, limitations, and perspectives of bivalent kinase inhibitors compared with the monovalent kinase inhibitors.
Collapse
Affiliation(s)
- Seungbeom Lee
- College of Pharmacy, CHA University, Pocheon-si, Gyeonggi-do, 11160, Republic of Korea
| | - Jisu Kim
- College of Pharmacy, Pusan National University, Busan, 46241, Republic of Korea
| | - Jeyun Jo
- College of Pharmacy, Pusan National University, Busan, 46241, Republic of Korea
| | - Jae Won Chang
- Department of Pharmacology & Chemical Biology, School of Medicine, Emory University, Atlanta, GA, USA; Department of Hematology & Medical Oncology, School of Medicine, Emory University, Atlanta, GA, USA; Winship Cancer Institute, Emory University, Atlanta, GA, USA
| | - Jaehoon Sim
- College of Pharmacy, Chungnam National University, Daejeon, 34134, Republic of Korea.
| | - Hwayoung Yun
- College of Pharmacy, Pusan National University, Busan, 46241, Republic of Korea.
| |
Collapse
|
113
|
Cruz L, Baladrón I, Rittoles A, Díaz PA, Valenzuela C, Santana R, Vázquez MM, García A, Chacón D, Thompson D, Perera G, González A, Reyes R, Torres L, Pérez J, Valido Y, Rodriguez R, Vázquez-Bloomquist DM, Rosales M, Ramón AC, Pérez GV, Guillén G, Muzio V, Perera Y, Perea SE. Treatment with an Anti-CK2 Synthetic Peptide Improves Clinical Response in COVID-19 Patients with Pneumonia. A Randomized and Controlled Clinical Trial. ACS Pharmacol Transl Sci 2021; 4:206-212. [PMID: 33615173 PMCID: PMC7755077 DOI: 10.1021/acsptsci.0c00175] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Indexed: 12/20/2022]
Abstract
The instrumental role of CK2 in the SARS-CoV-2 infection has pointed out this protein kinase as promising therapeutic target in COVID-19. Anti-SARS-CoV-2 activity has been reported by CK2 inhibitors in vitro; however, no anti-CK2 clinical approach has been investigated in COVID-19. This trial aimed to explore the safety and putative clinical benefit of CIGB-325, an anti-CK2 peptide previously assessed in cancer patients. A monocentric, controlled, and therapeutic exploratory trial of intravenous CIGB-325 in adults hospitalized with COVID-19 was performed. Twenty patients were randomly assigned to receive CIGB-325 (2.5 mg/kg/day during 5-consecutive days) plus standard-of-care (10 patients) or standard-of-care alone (10 patients). Adverse events were classified by the WHO Adverse Reaction Terminology. Parametric and nonparametric statistical analyses were performed according to the type of variable. Considering the small sample size, differences between groups were estimated by Bayesian analysis. CIGB-325 induced transient mild and/or moderate adverse events such as pruritus, flushing, and rash in some patients. Both therapeutic regimens were similar with respect to SARS-CoV-2 clearance in nasopharynx swabs over time. However, CIGB-325 significantly reduced the median number of pulmonary lesions (9.5 to 5.5, p = 0.042) at day 7 and the proportion of patients with such an effect was also higher according to Bayesian analysis (pDif > 0; 0.951). Also, CIGB-325 significantly reduced the CPK (p = 0.007) and LDH (p = 0.028) plasma levels at day 7. Our preliminary findings suggest that this anti-CK2 clinical approach could be combined with standard-of-care in COVID-19 in larger studies.
Collapse
Affiliation(s)
| | - Idania Baladrón
- Center
for Genetic Engineering and Biotechnology, Havana 10600, Cuba
| | | | - Pablo A. Díaz
- Center
for Genetic Engineering and Biotechnology, Havana 10600, Cuba
| | | | - Raúl Santana
- Central
Hospital “Luis Diaz Soto”, Havana 19130, Cuba
| | - Maria M. Vázquez
- Center
for Genetic Engineering and Biotechnology, Havana 10600, Cuba
| | | | - Deyli Chacón
- Central
Hospital “Luis Diaz Soto”, Havana 19130, Cuba
| | | | | | - Ariel González
- International
Center of Health “La Pradera”, Havana 11600, Cuba
| | - Rafael Reyes
- National
Institute of Oncology and Radiobiology, Havana 10400, Cuba
| | - Loida Torres
- International
Center of Health “La Pradera”, Havana 11600, Cuba
| | - Jesus Pérez
- Central
Hospital “Luis Diaz Soto”, Havana 19130, Cuba
| | - Yania Valido
- Central
Hospital “Luis Diaz Soto”, Havana 19130, Cuba
| | | | | | - Mauro Rosales
- Center
for Genetic Engineering and Biotechnology, Havana 10600, Cuba
- Faculty of
Biology, University of Havana, Havana 10400, Cuba
| | - Ailyn C. Ramón
- Center
for Genetic Engineering and Biotechnology, Havana 10600, Cuba
| | - George V. Pérez
- Center
for Genetic Engineering and Biotechnology, Havana 10600, Cuba
| | - Gerardo Guillén
- Center
for Genetic Engineering and Biotechnology, Havana 10600, Cuba
| | - Verena Muzio
- Center
for Genetic Engineering and Biotechnology, Havana 10600, Cuba
| | - Yasser Perera
- Center
for Genetic Engineering and Biotechnology, Havana 10600, Cuba
- China−Cuba
Biotechnology Joint Innovation Center (CCBJIC), Yongzhou Zhong Gu
Biotechnology Co., Ltd, Hunan 425000, China
| | - Silvio E. Perea
- Center
for Genetic Engineering and Biotechnology, Havana 10600, Cuba
| | | |
Collapse
|
114
|
Rosales M, Rodríguez-Ulloa A, Besada V, Ramón AC, Pérez GV, Ramos Y, Guirola O, González LJ, Zettl K, Wiśniewski JR, Perera Y, Perea SE. Phosphoproteomic Landscape of AML Cells Treated with the ATP-Competitive CK2 Inhibitor CX-4945. Cells 2021; 10:cells10020338. [PMID: 33562780 PMCID: PMC7915770 DOI: 10.3390/cells10020338] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 01/30/2021] [Accepted: 02/02/2021] [Indexed: 12/13/2022] Open
Abstract
Casein kinase 2 (CK2) regulates a plethora of proteins with pivotal roles in solid and hematological neoplasia. Particularly, in acute myeloid leukemia (AML) CK2 has been pointed as an attractive therapeutic target and prognostic marker. Here, we explored the impact of CK2 inhibition over the phosphoproteome of two cell lines representing major AML subtypes. Quantitative phosphoproteomic analysis was conducted to evaluate changes in phosphorylation levels after incubation with the ATP-competitive CK2 inhibitor CX-4945. Functional enrichment, network analysis, and database mining were performed to identify biological processes, signaling pathways, and CK2 substrates that are responsive to CX-4945. A total of 273 and 1310 phosphopeptides were found differentially modulated in HL-60 and OCI-AML3 cells, respectively. Despite regulated phosphopeptides belong to proteins involved in multiple biological processes and signaling pathways, most of these perturbations can be explain by direct CK2 inhibition rather than off-target effects. Furthermore, CK2 substrates regulated by CX-4945 are mainly related to mRNA processing, translation, DNA repair, and cell cycle. Overall, we evidenced that CK2 inhibitor CX-4945 impinge on mediators of signaling pathways and biological processes essential for primary AML cells survival and chemosensitivity, reinforcing the rationale behind the pharmacologic blockade of protein kinase CK2 for AML targeted therapy.
Collapse
Affiliation(s)
- Mauro Rosales
- Department of Animal and Human Biology, Faculty of Biology, University of Havana (UH), Havana 10400, Cuba;
- Molecular Oncology Group, Department of Pharmaceuticals, Biomedical Research Division, Center for Genetic Engineering and Biotechnology (CIGB), Havana 10600, Cuba; (A.C.R.); (G.V.P.)
| | - Arielis Rodríguez-Ulloa
- Mass Spectrometry Laboratory, Proteomics Group, Department of Systems Biology, Biomedical Research Division, CIGB, Havana 10600, Cuba; (A.R.-U.); (V.B.); (Y.R.); (L.J.G.)
| | - Vladimir Besada
- Mass Spectrometry Laboratory, Proteomics Group, Department of Systems Biology, Biomedical Research Division, CIGB, Havana 10600, Cuba; (A.R.-U.); (V.B.); (Y.R.); (L.J.G.)
| | - Ailyn C. Ramón
- Molecular Oncology Group, Department of Pharmaceuticals, Biomedical Research Division, Center for Genetic Engineering and Biotechnology (CIGB), Havana 10600, Cuba; (A.C.R.); (G.V.P.)
| | - George V. Pérez
- Molecular Oncology Group, Department of Pharmaceuticals, Biomedical Research Division, Center for Genetic Engineering and Biotechnology (CIGB), Havana 10600, Cuba; (A.C.R.); (G.V.P.)
| | - Yassel Ramos
- Mass Spectrometry Laboratory, Proteomics Group, Department of Systems Biology, Biomedical Research Division, CIGB, Havana 10600, Cuba; (A.R.-U.); (V.B.); (Y.R.); (L.J.G.)
| | - Osmany Guirola
- Bioinformatics Group, Department of Systems Biology, Biomedical Research Division, CIGB, Havana 10600, Cuba;
| | - Luis J. González
- Mass Spectrometry Laboratory, Proteomics Group, Department of Systems Biology, Biomedical Research Division, CIGB, Havana 10600, Cuba; (A.R.-U.); (V.B.); (Y.R.); (L.J.G.)
| | - Katharina Zettl
- Biochemical Proteomics Group, Department of Proteomics and Signal Transduction, Max-Planck Institute of Biochemistry, 82152 Munich, Germany; (K.Z.); (J.R.W.)
| | - Jacek R. Wiśniewski
- Biochemical Proteomics Group, Department of Proteomics and Signal Transduction, Max-Planck Institute of Biochemistry, 82152 Munich, Germany; (K.Z.); (J.R.W.)
| | - Yasser Perera
- Molecular Oncology Group, Department of Pharmaceuticals, Biomedical Research Division, Center for Genetic Engineering and Biotechnology (CIGB), Havana 10600, Cuba; (A.C.R.); (G.V.P.)
- China-Cuba Biotechnology Joint Innovation Center (CCBJIC), Yongzhou Zhong Gu Biotechnology Co., Ltd, Lengshuitan District, Yongzhou 425000, China
- Correspondence: (Y.P.); (S.E.P.)
| | - Silvio E. Perea
- Molecular Oncology Group, Department of Pharmaceuticals, Biomedical Research Division, Center for Genetic Engineering and Biotechnology (CIGB), Havana 10600, Cuba; (A.C.R.); (G.V.P.)
- Correspondence: (Y.P.); (S.E.P.)
| |
Collapse
|
115
|
Aravamudhan S, Türk C, Bock T, Keufgens L, Nolte H, Lang F, Krishnan RK, König T, Hammerschmidt P, Schindler N, Brodesser S, Rozsivalova DH, Rugarli E, Trifunovic A, Brüning J, Langer T, Braun T, Krüger M. Phosphoproteomics of the developing heart identifies PERM1 - An outer mitochondrial membrane protein. J Mol Cell Cardiol 2021; 154:41-59. [PMID: 33549681 DOI: 10.1016/j.yjmcc.2021.01.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 01/05/2021] [Accepted: 01/11/2021] [Indexed: 12/15/2022]
Abstract
Heart development relies on PTMs that control cardiomyocyte proliferation, differentiation and cardiac morphogenesis. We generated a map of phosphorylation sites during the early stages of cardiac postnatal development in mice; we quantified over 10,000 phosphorylation sites and 5000 proteins that were assigned to different pathways. Analysis of mitochondrial proteins led to the identification of PGC-1- and ERR-induced regulator in muscle 1 (PERM1), which is specifically expressed in skeletal muscle and heart tissue and associates with the outer mitochondrial membrane. We demonstrate PERM1 is subject to rapid changes mediated by the UPS through phosphorylation of its PEST motif by casein kinase 2. Ablation of Perm1 in mice results in reduced protein expression of lipin-1 accompanied by accumulation of specific phospholipid species. Isolation of Perm1-deficient mitochondria revealed significant downregulation of mitochondrial transport proteins for amino acids and carnitines, including SLC25A12/13/29/34 and CPT2. Consistently, we observed altered levels of various lipid species, amino acids, and acylcarnitines in Perm1-/- mitochondria. We conclude that the outer mitochondrial membrane protein PERM1 regulates homeostasis of lipid and amino acid metabolites in mitochondria.
Collapse
Affiliation(s)
| | - Clara Türk
- CECAD Research Center, Institute for Genetics, University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Theresa Bock
- CECAD Research Center, Institute for Genetics, University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Lena Keufgens
- CECAD Research Center, Institute for Genetics, University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Hendrik Nolte
- Max Planck Institute for Biology of Ageing, 50931 Cologne, Germany
| | - Franziska Lang
- TRON - Translational Oncology at the University Medical Center of the Johannes Gutenberg University Mainz, 55131 Mainz, Germany
| | - Ramesh Kumar Krishnan
- Excellence Cluster Cardio-Pulmonary Institute (CPI), Aulweg 130, 35392 Giessen, Germany
| | - Tim König
- Montreal Neurological Institute, McGill University, 3801 University Street, H3A 2B4 Montreal, QC, Canada
| | - Philipp Hammerschmidt
- Department of Neuronal Control of Metabolism, Max Planck Institute for Metabolism Research, Gleueler Strasse 50, 50931 Cologne, Germany
| | - Natalie Schindler
- Institut für Entwicklungsbiologie und Neurobiologie (IDN), Fachbereich Biologie (FB 10), Johannes Gutenberg University (JGU) Mainz, Germany c/o Institute of Molecular Biology gGmbH (IMB), Ackermannweg 4, 55128 Mainz, Germany
| | - Susanne Brodesser
- CECAD Research Center, Institute for Genetics, University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Dieu Hien Rozsivalova
- CECAD Research Center, Institute for Genetics, University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Elena Rugarli
- CECAD Research Center, Institute for Genetics, University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Aleksandra Trifunovic
- CECAD Research Center, Institute for Genetics, University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Jens Brüning
- Department of Neuronal Control of Metabolism, Max Planck Institute for Metabolism Research, Gleueler Strasse 50, 50931 Cologne, Germany
| | - Thomas Langer
- Max Planck Institute for Biology of Ageing, 50931 Cologne, Germany
| | - Thomas Braun
- Max Planck Institute for Heart and Lung Research, Ludwigstr. 43, 61231 Bad Nauheim, Germany
| | - Marcus Krüger
- CECAD Research Center, Institute for Genetics, University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany; Center for Molecular Medicine (CMMC), University of Cologne, 50931 Cologne, Germany.
| |
Collapse
|
116
|
Schnitzler A, Niefind K. Structural basis for the design of bisubstrate inhibitors of protein kinase CK2 provided by complex structures with the substrate-competitive inhibitor heparin. Eur J Med Chem 2021; 214:113223. [PMID: 33571828 DOI: 10.1016/j.ejmech.2021.113223] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 01/20/2021] [Accepted: 01/20/2021] [Indexed: 12/27/2022]
Abstract
The Ser/Thr kinase CK2, a member of the superfamily of eukaryotic protein kinases, has an acidophilic substrate profile with the substrate recognition sequence S/T-D/E-X-D/E, and it is inhibited by polyanionic substances like heparin. The latter, a highly sulphated glucosamino glycan composed mainly of repeating 2-O-sulpho-α-l-idopyranuronic acid/N,O6-disulpho-α-d-glucosamine disaccharide units, is the longest known substrate-competitive CK2 inhibitor. The structural basis of CK2's preference for anionic substrates and substrate-competitive inhibitors is only vaguely known which limits the value of the substrate-binding region for the structure-based development of CK2 bisubstrate inhibitors. Here, a tetragonal and a monoclinic co-crystal structure of CK2α, the catalytic subunit of CK2, with a decameric heparin fragment are described. In the tetragonal structure, the heparin molecule binds to the polybasic stretch at the beginning of CK2α's helix αC, whereas in the monoclinic structure it occupies the central substrate-recognition region around the P+1 loop. Together, the structures rationalize the inhibitory efficacy of heparin fragments as a function of chain length. The monoclinic CK2α/heparin structure, in which the heparin fragment is particularly well defined, is the first CK2 structure with an anionic inhibitor of considerable size at the central part of the substrate-recognition site. The bound heparin fragment is so close to the binding site of ATP-competitive inhibitors that it can guide the design of linkers and pave the way to efficient CK2 bisubstrate inhibitors in the future.
Collapse
Affiliation(s)
- Alexander Schnitzler
- Universität zu Köln, Department für Chemie, Institut für Biochemie, Zülpicher Straße 47, D-50674 Köln, Germany
| | - Karsten Niefind
- Universität zu Köln, Department für Chemie, Institut für Biochemie, Zülpicher Straße 47, D-50674 Köln, Germany.
| |
Collapse
|
117
|
Wells CI, Drewry DH, Pickett JE, Tjaden A, Krämer A, Müller S, Gyenis L, Menyhart D, Litchfield DW, Knapp S, Axtman AD. Development of a potent and selective chemical probe for the pleiotropic kinase CK2. Cell Chem Biol 2021; 28:546-558.e10. [PMID: 33484635 DOI: 10.1016/j.chembiol.2020.12.013] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 11/30/2020] [Accepted: 12/22/2020] [Indexed: 12/18/2022]
Abstract
Building on the pyrazolopyrimidine CK2 (casein kinase 2) inhibitor scaffold, we designed a small targeted library. Through comprehensive evaluation of inhibitor selectivity, we identified inhibitor 24 (SGC-CK2-1) as a highly potent and cell-active CK2 chemical probe with exclusive selectivity for both human CK2 isoforms. Remarkably, despite years of research pointing to CK2 as a key driver in cancer, our chemical probe did not elicit a broad antiproliferative phenotype in >90% of >140 cell lines when tested in dose-response. While many publications have reported CK2 functions, CK2 biology is complex and an available high-quality chemical tool such as SGC-CK2-1 will be indispensable in deciphering the relationships between CK2 function and phenotypes.
Collapse
Affiliation(s)
- Carrow I Wells
- Structural Genomics Consortium (SGC), UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill (UNC-CH), Chapel Hill, NC 27599, USA; Division of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, UNC-CH, Chapel Hill, NC 27599, USA
| | - David H Drewry
- Structural Genomics Consortium (SGC), UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill (UNC-CH), Chapel Hill, NC 27599, USA; Division of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, UNC-CH, Chapel Hill, NC 27599, USA
| | - Julie E Pickett
- Structural Genomics Consortium (SGC), UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill (UNC-CH), Chapel Hill, NC 27599, USA; Division of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, UNC-CH, Chapel Hill, NC 27599, USA
| | - Amelie Tjaden
- Institute for Pharmaceutical Chemistry, Johann Wolfgang Goethe-University, Max-von-Laue-Str. 9, 60438 Frankfurt am Main, Germany; Structural Genomics Consortium, Buchman Institute for Life Sciences, Johann Wolfgang Goethe-University, Max-von-Laue-Str. 15, 60438 Frankfurt am Main, Germany
| | - Andreas Krämer
- Institute for Pharmaceutical Chemistry, Johann Wolfgang Goethe-University, Max-von-Laue-Str. 9, 60438 Frankfurt am Main, Germany; Structural Genomics Consortium, Buchman Institute for Life Sciences, Johann Wolfgang Goethe-University, Max-von-Laue-Str. 15, 60438 Frankfurt am Main, Germany
| | - Susanne Müller
- Institute for Pharmaceutical Chemistry, Johann Wolfgang Goethe-University, Max-von-Laue-Str. 9, 60438 Frankfurt am Main, Germany; Structural Genomics Consortium, Buchman Institute for Life Sciences, Johann Wolfgang Goethe-University, Max-von-Laue-Str. 15, 60438 Frankfurt am Main, Germany
| | - Laszlo Gyenis
- Department of Biochemistry, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario, N6A 5C1, Canada
| | - Daniel Menyhart
- Department of Biochemistry, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario, N6A 5C1, Canada
| | - David W Litchfield
- Department of Biochemistry, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario, N6A 5C1, Canada; Department of Oncology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario, N6A 5C1, Canada
| | - Stefan Knapp
- Institute for Pharmaceutical Chemistry, Johann Wolfgang Goethe-University, Max-von-Laue-Str. 9, 60438 Frankfurt am Main, Germany; Structural Genomics Consortium, Buchman Institute for Life Sciences, Johann Wolfgang Goethe-University, Max-von-Laue-Str. 15, 60438 Frankfurt am Main, Germany
| | - Alison D Axtman
- Structural Genomics Consortium (SGC), UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill (UNC-CH), Chapel Hill, NC 27599, USA; Division of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, UNC-CH, Chapel Hill, NC 27599, USA.
| |
Collapse
|
118
|
Dovat E, Song C, Hu T, Rahman MA, Dhanyamraju PK, Klink M, Bogush D, Soliman M, Kane S, McGrath M, Ding Y, Desai D, Sharma A, Gowda C. Transcriptional Regulation of PIK3CD and PIKFYVE in T-Cell Acute Lymphoblastic Leukemia by IKAROS and Protein Kinase CK2. Int J Mol Sci 2021; 22:ijms22020819. [PMID: 33467550 PMCID: PMC7830534 DOI: 10.3390/ijms22020819] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/10/2021] [Accepted: 01/11/2021] [Indexed: 12/19/2022] Open
Abstract
IKAROS, encoded by the IKZF1 gene, is a DNA-binding protein that functions as a tumor suppressor in T cell acute lymphoblastic leukemia (T-ALL). Recent studies have identified IKAROS’s novel function in the epigenetic regulation of gene expression in T-ALL and uncovered many genes that are likely to be directly regulated by IKAROS. Here, we report the transcriptional regulation of two genes, phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit delta (PIK3CD) and phosphoinositide kinase, FYVE-type zinc finger containing (PIKFYVE), by IKAROS in T-ALL. PIK3CD encodes the protein p110δ subunit of phosphoinositide 3-kinase (PI3K). The PI3K/AKT pathway is frequently dysregulated in cancers, including T-ALL. IKAROS binds to the promoter regions of PIK3CD and PIKFYVE and reduces their transcription in primary T-ALL. Functional analysis demonstrates that IKAROS functions as a transcriptional repressor of both PIK3CD and PIKFYVE. Protein kinase CK2 (CK2) is a pro-oncogenic kinase that is overexpressed in T-ALL. CK2 phosphorylates IKAROS, impairs IKAROS’s DNA-binding ability, and functions as a repressor of PIK3CD and PIKFYVE. CK2 inhibition results in increased IKAROS binding to the promoters of PIK3CD and PIKFYVE and the transcriptional repression of both these genes. Overall, the presented data demonstrate for the first time that in T-ALL, CK2 hyperactivity contributes to PI3K signaling pathway upregulation, at least in part, through impaired IKAROS transcriptional regulation of PIK3CD and PIKFYVE. Targeting CK2 restores IKAROS’s regulatory effects on the PI3K oncogenic signaling pathway.
Collapse
Affiliation(s)
- Elanora Dovat
- Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (E.D.); (C.S.); (T.H.); (M.A.R.); (P.K.D.); (M.K.); (D.B.); (M.S.); (S.K.); (M.M.); (Y.D.)
| | - Chunhua Song
- Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (E.D.); (C.S.); (T.H.); (M.A.R.); (P.K.D.); (M.K.); (D.B.); (M.S.); (S.K.); (M.M.); (Y.D.)
- Ohio State University School of Medicine, Columbus, OH 43210, USA
| | - Tommy Hu
- Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (E.D.); (C.S.); (T.H.); (M.A.R.); (P.K.D.); (M.K.); (D.B.); (M.S.); (S.K.); (M.M.); (Y.D.)
| | - Mohammad Atiqur Rahman
- Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (E.D.); (C.S.); (T.H.); (M.A.R.); (P.K.D.); (M.K.); (D.B.); (M.S.); (S.K.); (M.M.); (Y.D.)
| | - Pavan Kumar Dhanyamraju
- Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (E.D.); (C.S.); (T.H.); (M.A.R.); (P.K.D.); (M.K.); (D.B.); (M.S.); (S.K.); (M.M.); (Y.D.)
| | - Morgann Klink
- Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (E.D.); (C.S.); (T.H.); (M.A.R.); (P.K.D.); (M.K.); (D.B.); (M.S.); (S.K.); (M.M.); (Y.D.)
| | - Daniel Bogush
- Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (E.D.); (C.S.); (T.H.); (M.A.R.); (P.K.D.); (M.K.); (D.B.); (M.S.); (S.K.); (M.M.); (Y.D.)
| | - Mario Soliman
- Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (E.D.); (C.S.); (T.H.); (M.A.R.); (P.K.D.); (M.K.); (D.B.); (M.S.); (S.K.); (M.M.); (Y.D.)
| | - Shriya Kane
- Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (E.D.); (C.S.); (T.H.); (M.A.R.); (P.K.D.); (M.K.); (D.B.); (M.S.); (S.K.); (M.M.); (Y.D.)
| | - Mary McGrath
- Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (E.D.); (C.S.); (T.H.); (M.A.R.); (P.K.D.); (M.K.); (D.B.); (M.S.); (S.K.); (M.M.); (Y.D.)
| | - Yali Ding
- Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (E.D.); (C.S.); (T.H.); (M.A.R.); (P.K.D.); (M.K.); (D.B.); (M.S.); (S.K.); (M.M.); (Y.D.)
| | - Dhimant Desai
- Department of Pharmacology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (D.D.); (A.S.)
| | - Arati Sharma
- Department of Pharmacology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (D.D.); (A.S.)
| | - Chandrika Gowda
- Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA; (E.D.); (C.S.); (T.H.); (M.A.R.); (P.K.D.); (M.K.); (D.B.); (M.S.); (S.K.); (M.M.); (Y.D.)
- Correspondence: ; Tel.: +1-91-717-531-6012
| |
Collapse
|
119
|
Shahmir F, Pauls KP. Identification, Gene Structure, and Expression of BnMicEmUP: A Gene Upregulated in Embryogenic Brassica napus Microspores. FRONTIERS IN PLANT SCIENCE 2021; 11:576008. [PMID: 33519838 PMCID: PMC7845737 DOI: 10.3389/fpls.2020.576008] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 11/09/2020] [Indexed: 06/12/2023]
Abstract
Microspores of Brassica napus can be diverted from normal pollen development into embryogenesis by treating them with a mild heat shock. As microspore embryogenesis closely resembles zygotic embryogenesis, it is used as model for studying the molecular mechanisms controlling embryo formation. A previous study comparing the transcriptomes of three-day-old sorted embryogenic and pollen-like (non-embryogenic) microspores identified a gene homologous to AT1G74730 of unknown function that was upregulated 8-fold in the embryogenic cells. In the current study, the gene was isolated and sequenced from B. napus and named BnMicEmUP (B. napus microspore embryogenesis upregulated gene). Four forms of BnMicEmUP mRNA and three forms of genomic DNA were identified. BnMicEmUP2,3 was upregulated more than 7-fold by day 3 in embryogenic microspore cultures compared to non-induced cultures. BnMicEmUP1,4 was highly expressed in leaves. Transient expression studies of BnMicEmUP3::GFP fusion protein in Nicotiana benthamiana and in stable Arabidopsis transgenics showed that it accumulates in chloroplasts. The features of the BnMicEmUP protein, which include a chloroplast targeting region, a basic region, and a large region containing 11 complete leucine-rich repeats, suggest that it is similar to a bZIP PEND (plastid envelope DNA-binding protein) protein, a DNA binding protein found in the inner envelope membrane of developing chloroplasts. Here, we report that the BnMicEmUP3 overexpression in Arabidopsis increases the sensitivity of seedlings to exogenous abscisic acid (ABA). The BnMicEmUP proteins appear to be transcription factors that are localized in plastids and are involved in plant responses to biotic and abiotic environmental stresses; as well as the results obtained from this study can be used to improve crop yield.
Collapse
|
120
|
Protein kinase CK2 inhibition as a pharmacological strategy. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2021; 124:23-46. [PMID: 33632467 DOI: 10.1016/bs.apcsb.2020.09.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
CK2 is a constitutively active Ser/Thr protein kinase which phosphorylates hundreds of substrates. Since they are primarily related to survival and proliferation pathways, the best-known pathological roles of CK2 are in cancer, where its targeting is currently being considered as a possible therapy. However, CK2 activity has been found instrumental in many other human pathologies, and its inhibition will expectably be extended to different purposes in the near future. Here, after a description of CK2 features and implications in diseases, we analyze the different inhibitors and strategies available to target CK2, and update the results so far obtained by their in vivo application.
Collapse
|
121
|
Bhardwaj P, Kulasiri D, Samarasinghe S. Modeling protein-protein interactions in axon initial segment to understand their potential impact on action potential initiation. Neural Regen Res 2021; 16:700-706. [PMID: 33063731 PMCID: PMC8067952 DOI: 10.4103/1673-5374.295332] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The axon initial segment (AIS) region is crucial for action potential initiation due to the presence of high-density AIS protein voltage-gated sodium channels (Nav). Nav channels comprise several serine residues responsible for the recruitment of Nav channels into the structure of AIS through interactions with ankyrin-G (AnkG). In this study, a series of computational experiments are performed to understand the role of AIS proteins casein kinase 2 and AnkG on Nav channel recruitment into the AIS. The computational simulation results using Virtual cell software indicate that Nav channels with all serine sites available for phosphorylation bind to AnkG with strong affinity. At the low initial concentration of AnkG and casein kinase 2, the concentration of Nav channels reduces significantly, suggesting the importance of casein kinase 2 and AnkG in the recruitment of Nav channels.
Collapse
Affiliation(s)
- Piyush Bhardwaj
- Centre of Advanced Computational Solutions (C-fACS); Department of Molecular Biosciences, Lincoln University, Christchurch, New Zealand
| | - Don Kulasiri
- Centre of Advanced Computational Solutions (C-fACS); Department of Molecular Biosciences, Lincoln University, Christchurch, New Zealand
| | - Sandhya Samarasinghe
- Centre of Advanced Computational Solutions (C-fACS), Lincoln University, Christchurch, New Zealand
| |
Collapse
|
122
|
Malavia N, Kuche K, Ghadi R, Jain S. A bird's eye view of the advanced approaches and strategies for overshadowing triple negative breast cancer. J Control Release 2020; 330:72-100. [PMID: 33321156 DOI: 10.1016/j.jconrel.2020.12.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 12/07/2020] [Accepted: 12/09/2020] [Indexed: 12/12/2022]
Abstract
Triple negative breast cancer (TNBC) is one of the most aggressive form of breast cancer. It is characterized by the absence of estrogen, progesterone and human epidermal growth factor receptors. The main issue with TNBC is that it exhibits poor prognosis, high risk of relapse, short progression-free survival and low overall survival in patients. This is because the conventional therapy used for managing TNBC has issues pertaining to poor bioavailability, lower cellular uptake, increased off-target effects and development of resistance. To overcome such pitfalls, several other approaches are explored. In this context, the present manuscript showcases three of the most widely used approaches which are (i) nanotechnology-based approach; (ii) gene therapy approach and (iii) Phytochemical-based approach. The ultimate focus is to present and explain the insightful reports based on these approaches. Further, the review also expounds on the identified molecular targets and novel targeting ligands which are explored for managing TNBC effectively. Thus, in a nutshell, the review tries to highlight these existing treatment approaches which might inspire for future development of novel therapies with a potential of overshadowing TNBC.
Collapse
Affiliation(s)
- Nilesh Malavia
- Centre for Pharmaceutical Nanotechnology, Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, S.A.S Nagar, Mohali, Punjab, India
| | - Kaushik Kuche
- Centre for Pharmaceutical Nanotechnology, Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, S.A.S Nagar, Mohali, Punjab, India
| | - Rohan Ghadi
- Centre for Pharmaceutical Nanotechnology, Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, S.A.S Nagar, Mohali, Punjab, India
| | - Sanyog Jain
- Centre for Pharmaceutical Nanotechnology, Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, S.A.S Nagar, Mohali, Punjab, India.
| |
Collapse
|
123
|
Lamper AM, Fleming RH, Ladd KM, Lee ASY. A phosphorylation-regulated eIF3d translation switch mediates cellular adaptation to metabolic stress. Science 2020; 370:853-856. [PMID: 33184215 DOI: 10.1126/science.abb0993] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 08/20/2020] [Accepted: 09/24/2020] [Indexed: 12/20/2022]
Abstract
Shutoff of global protein synthesis is a conserved response to cellular stresses. This general phenomenon is accompanied by the induction of distinct gene programs tailored to each stress. Although the mechanisms driving repression of general protein synthesis are well characterized, how cells reprogram the translation machinery for selective gene expression remains poorly understood. Here, we found that the noncanonical 5' cap-binding protein eIF3d was activated in response to metabolic stress in human cells. Activation required reduced CK2-mediated phosphorylation near the eIF3d cap-binding pocket. eIF3d controls a gene program enriched in factors important for glucose homeostasis, including members of the mammalian target of rapamycin (mTOR) pathway. eIF3d-directed translation adaptation was essential for cell survival during chronic glucose deprivation. Thus, this mechanism of translation reprogramming regulates the cellular response to metabolic stress.
Collapse
Affiliation(s)
- Adam M Lamper
- Department of Biology, Brandeis University, Waltham, MA 02453, USA.
| | | | - Kayla M Ladd
- Department of Biology, Brandeis University, Waltham, MA 02453, USA
| | - Amy S Y Lee
- Department of Biology, Brandeis University, Waltham, MA 02453, USA.
| |
Collapse
|
124
|
Cesaro L, Pinna LA. Prevalence and significance of the commonest phosphorylated motifs in the human proteome: a global analysis. Cell Mol Life Sci 2020; 77:5281-5298. [PMID: 32052090 PMCID: PMC11105107 DOI: 10.1007/s00018-020-03474-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 01/22/2020] [Accepted: 01/28/2020] [Indexed: 01/08/2023]
Abstract
Protein phosphorylation is the most frequent post-translational modification by which the properties of eukaryotic proteins can be reversibly modified. In humans, over 500 protein kinases generate a huge phosphoproteome including more than 200,000 individual phosphosites, a figure which is still continuously increasing. The in vivo selectivity of protein kinases is the outcome of a multifaceted and finely tuned process where numerous factors play an integrated role. To gain information about the actual contribution to this process of local features that reflect the interaction of the protein targets with the catalytic site of the kinases, the prevalence of the commonest motifs determining the consensus sequence of Ser/Thr-specific kinases has been examined in the whole human phosphoproteome and in the phosphoproteomes generated by a panel of the 47 most pleiotropic protein kinases. Our analysis shows that: (1) most phosphosites do conform to at least one of the motifs considered, with a substantial proportion conforming to two or more of them; (2) some motifs, with special reference to the one recognized by protein kinase CK2 (pS/pT-x-x-E/D) are very promiscuous, being abundantly represented also at the phosphosites of all the other protein kinases considered; (3) by contrast, other phosphorylated motifs, notably pS/pT-P, pS/pT-Q and pS-x-E, are more discriminatory and selective, being nearly absent in the phosphosites that are not attributable to certain categories of kinases. The information provided will prove helpful to make reliable inferences based on the manual inspection of individual phosphosites.
Collapse
Affiliation(s)
- Luca Cesaro
- Department of Biomedical Sciences, University of Padova, Via U. Bassi 58/B, 35131, Padova, Italy
| | - Lorenzo A Pinna
- Department of Biomedical Sciences, University of Padova, Via U. Bassi 58/B, 35131, Padova, Italy.
- CNR Institute of Neurosciences, Viale G. Colombo 3, 35131, Padova, Italy.
| |
Collapse
|
125
|
D'Amore C, Borgo C, Sarno S, Salvi M. Role of CK2 inhibitor CX-4945 in anti-cancer combination therapy - potential clinical relevance. Cell Oncol (Dordr) 2020; 43:1003-1016. [PMID: 33052585 PMCID: PMC7717057 DOI: 10.1007/s13402-020-00566-w] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/28/2020] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Protein kinase CK2 inhibition has long been considered as an attractive anti-cancer strategy based on the following considerations: CK2 is a pro-survival kinase, it is frequently over-expressed in human tumours and its over-expression correlates with a worse prognosis. Preclinical evidence strongly supports the feasibility of this target and, although dozens of CK2 inhibitors have been described in the literature so far, CX-4945 (silmitasertib) was the first that entered into clinical trials for the treatment of both human haematological and solid tumours. However, kinase inhibitor monotherapies turned out to be effective only in a limited number of malignancies, probably due to the multifaceted causes that underlie them, supporting the emerging view that multi-targeted approaches to treat human tumours could be more effective. CONCLUSIONS In this review, we will address combined anti-cancer therapeutic strategies described so far which involve the use of CX-4945. Data from preclinical studies clearly show the ability of CX-4945 to synergistically cooperate with different classes of anti-neoplastic agents, thereby contributing to an orchestrated anti-tumour action against multiple targets. Overall, these promising outcomes support the translation of CX-4945 combined therapies into clinical anti-cancer applications.
Collapse
Affiliation(s)
- Claudio D'Amore
- Department of Biomedical Sciences, University of Padova, Padova, Italy.
| | - Christian Borgo
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Stefania Sarno
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Mauro Salvi
- Department of Biomedical Sciences, University of Padova, Padova, Italy.
| |
Collapse
|
126
|
Wang F, Li J, Fan S, Jin Z, Huang C. Targeting stress granules: A novel therapeutic strategy for human diseases. Pharmacol Res 2020; 161:105143. [PMID: 32814168 PMCID: PMC7428673 DOI: 10.1016/j.phrs.2020.105143] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 08/07/2020] [Accepted: 08/10/2020] [Indexed: 12/16/2022]
Abstract
Stress granules (SGs) are assemblies of mRNA and proteins that form from mRNAs stalled in translation initiation in response to stress. Chronic stress might even induce formation of cytotoxic pathological SGs. SGs participate in various biological functions including response to apoptosis, inflammation, immune modulation, and signalling pathways; moreover, SGs are involved in pathogenesis of neurodegenerative diseases, viral infection, aging, cancers and many other diseases. Emerging evidence has shown that small molecules can affect SG dynamics, including assembly, disassembly, maintenance and clearance. Thus, targeting SGs is a potential therapeutic strategy for the treatment of human diseases and the promotion of health. The established methods for detecting SGs provided ready tools for large-scale screening of agents that alter the dynamics of SGs. Here, we describe the effects of small molecules on SG assembly, disassembly, and their roles in the disease. Moreover, we provide perspective for the possible application of small molecules targeting SGs in the treatment of human diseases.
Collapse
Affiliation(s)
- Fei Wang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai, 201203, China
| | - Juan Li
- College of Chemistry and Life Sciences, Zhejiang Normal University, 688 Yingbin Road, Jinhua, Zhejiang, 321004, China
| | - Shengjie Fan
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai, 201203, China
| | - Zhigang Jin
- College of Chemistry and Life Sciences, Zhejiang Normal University, 688 Yingbin Road, Jinhua, Zhejiang, 321004, China.
| | - Cheng Huang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai, 201203, China.
| |
Collapse
|
127
|
Brear P, Ball D, Stott K, D'Arcy S, Hyvönen M. Proposed Allosteric Inhibitors Bind to the ATP Site of CK2α. J Med Chem 2020; 63:12786-12798. [PMID: 33119282 DOI: 10.1021/acs.jmedchem.0c01173] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
CK2α is a ubiquitous, well-studied kinase that is a target for small-molecule inhibition, for treatment of cancers. While many different classes of adenosine 5'-triphosphate (ATP)-competitive inhibitors have been described for CK2α, they tend to suffer from significant off-target activity and new approaches are needed. A series of inhibitors of CK2α has recently been described as allosteric, acting at a previously unidentified binding site. Given the similarity of these inhibitors to known ATP-competitive inhibitors, we have investigated them further. In our thorough structural and biophysical analyses, we have found no evidence that these inhibitors bind to the proposed allosteric site. Rather, we report crystal structures, competitive isothermal titration calorimetry (ITC) and NMR, hydrogen-deuterium exchange (HDX) mass spectrometry, and chemoinformatic analyses that all point to these compounds binding in the ATP pocket. Comparisons of our results and experimental approach with the data presented in the original report suggest that the primary reason for the disparity is nonspecific inhibition by aggregation.
Collapse
Affiliation(s)
- Paul Brear
- Department of Biochemistry, University of Cambridge, Cambridge CB2 1GA, U.K
| | - Darby Ball
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Katherine Stott
- Department of Biochemistry, University of Cambridge, Cambridge CB2 1GA, U.K
| | - Sheena D'Arcy
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Marko Hyvönen
- Department of Biochemistry, University of Cambridge, Cambridge CB2 1GA, U.K
| |
Collapse
|
128
|
Xiang Y, Zou Q, Zhao L. VPTMdb: a viral posttranslational modification database. Brief Bioinform 2020; 22:5935500. [PMID: 33094321 DOI: 10.1093/bib/bbaa251] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 09/03/2020] [Accepted: 09/07/2020] [Indexed: 11/14/2022] Open
Abstract
In viruses, posttranslational modifications (PTMs) are essential for their life cycle. Recognizing viral PTMs is very important for a better understanding of the mechanism of viral infections and finding potential drug targets. However, few studies have investigated the roles of viral PTMs in virus-human interactions using comprehensive viral PTM datasets. To fill this gap, we developed the first comprehensive viral posttranslational modification database (VPTMdb) for collecting systematic information of PTMs in human viruses and infected host cells. The VPTMdb contains 1240 unique viral PTM sites with 8 modification types from 43 viruses (818 experimentally verified PTM sites manually extracted from 150 publications and 422 PTMs extracted from SwissProt) as well as 13 650 infected cells' PTMs extracted from seven global proteomics experiments in six human viruses. The investigation of viral PTM sequences motifs showed that most viral PTMs have the consensus motifs with human proteins in phosphorylation and five cellular kinase families phosphorylate more than 10 viral species. The analysis of protein disordered regions presented that more than 50% glycosylation sites of double-strand DNA viruses are in the disordered regions, whereas single-strand RNA and retroviruses prefer ordered regions. Domain-domain interaction analysis indicating potential roles of viral PTMs play in infections. The findings should make an important contribution to the field of virus-human interaction. Moreover, we created a novel sequence-based classifier named VPTMpre to help users predict viral protein phosphorylation sites. VPTMdb online web server (http://vptmdb.com:8787/VPTMdb/) was implemented for users to download viral PTM data and predict phosphorylation sites of interest.
Collapse
Affiliation(s)
- Yujia Xiang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences
| | - Quan Zou
- University of Electronic Science and Technology of China
| | | |
Collapse
|
129
|
Bedenbender K, Beinborn I, Vollmeister E, Schmeck B. p38 and Casein Kinase 2 Mediate Ribonuclease 1 Repression in Inflamed Human Endothelial Cells via Promoter Remodeling Through Nucleosome Remodeling and Deacetylase Complex. Front Cell Dev Biol 2020; 8:563604. [PMID: 33178683 PMCID: PMC7593526 DOI: 10.3389/fcell.2020.563604] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 09/28/2020] [Indexed: 11/13/2022] Open
Abstract
Vascular pathologies, such as thrombosis or atherosclerosis, are leading causes of death worldwide and are strongly associated with the dysfunction of vascular endothelial cells. In this context, the extracellular endonuclease Ribonuclease 1 (RNase1) acts as an essential protective factor in regulation and maintenance of vascular homeostasis. However, long-term inflammation causes strong repression of RNase1 expression, thereby promoting endothelial cell dysfunction. This inflammation-mediated downregulation of RNase1 in human endothelial cells is facilitated via histone deacetylase (HDAC) 2, although the underlying molecular mechanisms are still unknown. Here, we report that inhibition of c-Jun N-terminal kinase by small chemical compounds in primary human endothelial cells decreased physiological RNase1 mRNA abundance, while p38 kinase inhibition restored repressed RNase1 expression upon proinflammatory stimulation with tumor necrosis factor alpha (TNF-α) and poly I:C. Moreover, blocking of the p38 kinase- and HDAC2-associated kinase casein kinase 2 (CK2) by inhibitor as well as small interfering RNA (siRNA)-knockdown restored RNase1 expression upon inflammation of human endothelial cells. Further downstream, siRNA-knockdown of chromodomain helicase DNA binding protein (CHD) 3 and 4 of the nucleosome remodeling and deacetylase (NuRD) complex restored RNase1 repression in TNF-α treated endothelial cells implicating its role in the HDAC2-containing repressor complex involved in RNase1 repression. Finally, chromatin immunoprecipitation in primary human endothelial cells confirmed recruitment of the CHD4-containing NuRD complex and subsequent promoter remodeling via histone deacetylation at the RNASE1 promoter in a p38-dependent manner upon human endothelial cell inflammation. Altogether, our results suggest that endothelial RNase1 repression in chronic vascular inflammation is regulated by a p38 kinase-, CK2-, and NuRD complex-dependent pathway resulting in complex recruitment to the RNASE1 promoter and subsequent promoter remodeling.
Collapse
Affiliation(s)
- Katrin Bedenbender
- Institute for Lung Research, Universities of Giessen and Marburg Lung Center, Philipps-University Marburg, Marburg, Germany
| | - Isabell Beinborn
- Institute for Lung Research, Universities of Giessen and Marburg Lung Center, Philipps-University Marburg, Marburg, Germany
| | - Evelyn Vollmeister
- Institute for Lung Research, Universities of Giessen and Marburg Lung Center, Philipps-University Marburg, Marburg, Germany
| | - Bernd Schmeck
- Institute for Lung Research, Universities of Giessen and Marburg Lung Center, Philipps-University Marburg, Marburg, Germany.,Department of Pulmonary and Critical Care Medicine, Department of Medicine, University Medical Center Giessen and Marburg, Philipps-University Marburg, Marburg, Germany.,Member of the German Center for Lung Research, Member of the German Center for Infectious Disease Research, Marburg, Germany.,Center for Synthetic Microbiology, Philipps-University Marburg, Marburg, Germany
| |
Collapse
|
130
|
Borgo C, D’Amore C, Cesaro L, Itami K, Hirota T, Salvi M, Pinna LA. A N-terminally deleted form of the CK2α’ catalytic subunit is sufficient to support cell viability. Biochem Biophys Res Commun 2020; 531:409-415. [DOI: 10.1016/j.bbrc.2020.07.112] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 07/23/2020] [Indexed: 01/17/2023]
|
131
|
Reikhardt BA, Shabanov PD. The Effect of Structural Analogues of Etimizole on Protein Kinase CK2, Protein Phosphorylation, and Transcription of Chromatin in Rat Cortical and Hippocampal Neurons. BIOCHEMISTRY (MOSCOW), SUPPLEMENT SERIES B: BIOMEDICAL CHEMISTRY 2020. [DOI: 10.1134/s1990750820040101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
132
|
Preclinical efficacy of CIGB-300, an anti-CK2 peptide, on breast cancer metastasic colonization. Sci Rep 2020; 10:14689. [PMID: 32895446 PMCID: PMC7477577 DOI: 10.1038/s41598-020-71854-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 08/12/2020] [Indexed: 12/01/2022] Open
Abstract
CK2 is a serine/threonine kinase that is overexpressed in breast cancer and its inhibition is associated to reduced tumor growth and disease progression. CIGB-300 is an antitumor peptide with a novel mechanism of action, since it binds to protein kinase CK2 catalytic subunit alpha and to CK2 substrates thus preventing the enzyme activity. Our aim was to evaluate the potential therapeutic benefits of CIGB-300 on breast cancer disease using experimental models with translational relevance. We demonstrated that CIGB-300 reduces breast cancer cell growth in MDA-MB-231, MCF-7 and F3II cells, exerting a pro-apoptotic action and cell cycle arrest. We also found that CIGB-300 decreased cell adhesion, migration and clonogenic capacity of malignant cells. Effect on experimental breast cancer lung metastasis was evaluated after surgical removal of primary F3II tumors or after tail vein injection of tumor cells, also we evaluated CIGB-300 effect on spontaneous lung metastasis in an orthotopic model. Systemic CIGB-300 treatment inhibited breast cancer colonization of the lung, reducing the size and number of metastatic lesions. The present preclinical study establishes for the first time the efficacy of CIGB-300 on breast cancer. These encouraging results suggest that CIGB-300 could be used for the management of breast cancer as an adjuvant therapy after surgery, limiting tumor metastatic spread and thus protecting the patient from distant recurrence.
Collapse
|
133
|
Hewage KAH, Yang J, Wang D, Hao G, Yang G, Zhu J. Chemical Manipulation of Abscisic Acid Signaling: A New Approach to Abiotic and Biotic Stress Management in Agriculture. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:2001265. [PMID: 32999840 PMCID: PMC7509701 DOI: 10.1002/advs.202001265] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 06/11/2020] [Indexed: 05/02/2023]
Abstract
The phytohormone abscisic acid (ABA) is the best-known stress signaling molecule in plants. ABA protects sessile land plants from biotic and abiotic stresses. The conserved pyrabactin resistance/pyrabactin resistance-like/regulatory component of ABA receptors (PYR/PYL/RCAR) perceives ABA and triggers a cascade of signaling events. A thorough knowledge of the sequential steps of ABA signaling will be necessary for the development of chemicals that control plant stress responses. The core components of the ABA signaling pathway have been identified with adequate characterization. The information available concerning ABA biosynthesis, transport, perception, and metabolism has enabled detailed functional studies on how the protective ability of ABA in plants might be modified to increase plant resistance to stress. Some of the significant contributions to chemical manipulation include ABA biosynthesis inhibitors, and ABA receptor agonists and antagonists. Chemical manipulation of key control points in ABA signaling is important for abiotic and biotic stress management in agriculture. However, a comprehensive review of the current knowledge of chemical manipulation of ABA signaling is lacking. Here, a thorough analysis of recent reports on small-molecule modulation of ABA signaling is provided. The challenges and prospects in the chemical manipulation of ABA signaling for the development of ABA-based agrochemicals are also discussed.
Collapse
Affiliation(s)
- Kamalani Achala H. Hewage
- Key Laboratory of Pesticide & Chemical BiologyMinistry of EducationCollege of ChemistryCentral China Normal UniversityWuhan430079P. R. China
- International Joint Research Center for Intelligent Biosensor Technology and HealthCentral China Normal UniversityWuhan430079P. R. China
| | - Jing‐Fang Yang
- Key Laboratory of Pesticide & Chemical BiologyMinistry of EducationCollege of ChemistryCentral China Normal UniversityWuhan430079P. R. China
- International Joint Research Center for Intelligent Biosensor Technology and HealthCentral China Normal UniversityWuhan430079P. R. China
| | - Di Wang
- Key Laboratory of Pesticide & Chemical BiologyMinistry of EducationCollege of ChemistryCentral China Normal UniversityWuhan430079P. R. China
- International Joint Research Center for Intelligent Biosensor Technology and HealthCentral China Normal UniversityWuhan430079P. R. China
| | - Ge‐Fei Hao
- Key Laboratory of Pesticide & Chemical BiologyMinistry of EducationCollege of ChemistryCentral China Normal UniversityWuhan430079P. R. China
- International Joint Research Center for Intelligent Biosensor Technology and HealthCentral China Normal UniversityWuhan430079P. R. China
| | - Guang‐Fu Yang
- Key Laboratory of Pesticide & Chemical BiologyMinistry of EducationCollege of ChemistryCentral China Normal UniversityWuhan430079P. R. China
- International Joint Research Center for Intelligent Biosensor Technology and HealthCentral China Normal UniversityWuhan430079P. R. China
- Collaborative Innovation Center of Chemical Science and EngineeringTianjin300072P. R. China
| | - Jian‐Kang Zhu
- Shanghai Center for Plant Stress Biologyand CAS Center of Excellence in Molecular Plant SciencesChinese Academy of SciencesShanghai20032P. R. China
- Department of Horticulture and Landscape ArchitecturePurdue UniversityWest LafayetteIN47907USA
| |
Collapse
|
134
|
Flavones and flavonols may have clinical potential as CK2 inhibitors in cancer therapy. Med Hypotheses 2020; 141:109723. [DOI: 10.1016/j.mehy.2020.109723] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 03/27/2020] [Accepted: 04/08/2020] [Indexed: 01/16/2023]
|
135
|
Kleinow T, Happle A, Kober S, Linzmeier L, Rehm TM, Fritze J, Buchholz PCF, Kepp G, Jeske H, Wege C. Phosphorylations of the Abutilon Mosaic Virus Movement Protein Affect Its Self-Interaction, Symptom Development, Viral DNA Accumulation, and Host Range. FRONTIERS IN PLANT SCIENCE 2020; 11:1155. [PMID: 32849713 PMCID: PMC7411133 DOI: 10.3389/fpls.2020.01155] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 07/15/2020] [Indexed: 06/11/2023]
Abstract
The genome of bipartite geminiviruses in the genus Begomovirus comprises two circular DNAs: DNA-A and DNA-B. The DNA-B component encodes a nuclear shuttle protein (NSP) and a movement protein (MP), which cooperate for systemic spread of infectious nucleic acids within host plants and affect pathogenicity. MP mediates multiple functions during intra- and intercellular trafficking, such as binding of viral nucleoprotein complexes, targeting to and modification of plasmodesmata, and release of the cargo after cell-to-cell transfer. For Abutilon mosaic virus (AbMV), phosphorylation of MP expressed in bacteria, yeast, and Nicotiana benthamiana plants, respectively, has been demonstrated in previous studies. Three phosphorylation sites (T221, S223, and S250) were identified in its C-terminal oligomerization domain by mass spectrometry, suggesting a regulation of MP by posttranslational modification. To examine the influence of the three sites on the self-interaction in more detail, MP mutants were tested for their interaction in yeast by two-hybrid assays, or by Förster resonance energy transfer (FRET) techniques in planta. Expression constructs with point mutations leading to simultaneous (triple) exchange of T221, S223, and S250 to either uncharged alanine (MPAAA), or phosphorylation charge-mimicking aspartate residues (MPDDD) were compared. MPDDD interfered with MP-MP binding in contrast to MPAAA. The roles of the phosphorylation sites for the viral life cycle were studied further, using plant-infectious AbMV DNA-B variants with the same triple mutants each. When co-inoculated with wild-type DNA-A, both mutants infected N. benthamiana plants systemically, but were unable to do so for some other plant species of the families Solanaceae or Malvaceae. Systemically infected plants developed symptoms and viral DNA levels different from those of wild-type AbMV for most virus-plant combinations. The results indicate a regulation of diverse MP functions by posttranslational modifications and underscore their biological relevance for a complex host plant-geminivirus interaction.
Collapse
|
136
|
Pérez-Moreno P, Quezada-Meza C, Chavez-Almarza C, Niechi I, Silva-Pavez E, Trigo-Hidalgo C, Aguayo F, Jara L, Cáceres-Verschae A, Varas-Godoy M, Díaz VM, García de Herreros A, Burzio VA, Tapia JC. Phosphorylation of Endothelin-Converting Enzyme-1c at Serines 18 and 20 by CK2 Promotes Aggressiveness Traits in Colorectal Cancer Cells. Front Oncol 2020; 10:1004. [PMID: 32850305 PMCID: PMC7406796 DOI: 10.3389/fonc.2020.01004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 05/20/2020] [Indexed: 02/06/2023] Open
Abstract
Endothelin-converting enzyme-1 (ECE1) activates the endothelin-1 peptide, which upregulates pathways that are related to diverse hallmarks of cancer. ECE1 is expressed as four isoforms differing in their N-terminal domains. Protein kinase CK2 phosphorylates the N-terminus of isoform ECE1c, enhancing its stability and promoting invasiveness of colorectal cancer cells. However, the specific residues in ECE1c that are phosphorylated by CK2 and how this phosphorylation promotes invasiveness was unknown. Here we demonstrate that Ser-18 and Ser-20 are the bona fide residues phosphorylated by CK2 in ECE1c. Thus, biphospho-mimetic ECE1cDD and biphospho-resistant ECE1cAA mutants were constructed and stably expressed in different colorectal cancer cells through lentiviral transduction. Biphospho-mimetic ECE1cDD displayed the highest stability in cells, even in the presence of the specific CK2 inhibitor silmitasertib. Concordantly, ECE1cDD-expressing cells showed enhanced hallmarks of cancer, such as proliferation, migration, invasiveness, and self-renewal capacities. Conversely, cells expressing the less-stable biphospho-resistant ECE1cAA showed a reduction in these features, but also displayed an important sensitization to 5-fluorouracil, an antineoplastic agent traditionally used as therapy in colorectal cancer patients. Altogether, these findings suggest that phosphorylation of ECE1c at Ser-18 and Ser-20 by CK2 promotes aggressiveness in colorectal cancer cells. Therefore, phospho-ECE1c may constitute a novel biomarker of poor prognosis and CK2 inhibition may be envisioned as a potential therapy for colorectal cancer patients.
Collapse
Affiliation(s)
- Pablo Pérez-Moreno
- Programa de Biología Celular y Molecular, Facultad de Medicina, ICBM, Universidad de Chile, Santiago, Chile
| | - Camila Quezada-Meza
- Programa de Biología Celular y Molecular, Facultad de Medicina, ICBM, Universidad de Chile, Santiago, Chile
| | - Cristopher Chavez-Almarza
- Programa de Biología Celular y Molecular, Facultad de Medicina, ICBM, Universidad de Chile, Santiago, Chile
| | - Ignacio Niechi
- Facultad de Ciencias, Instituto de Bioquímica y Microbiología, Universidad Austral de Chile, Valdivia, Chile
| | - Eduardo Silva-Pavez
- Center for Integrative Biology, Faculty of Sciences, Universidad Mayor, Santiago, Chile
| | - César Trigo-Hidalgo
- Programa de Biología Celular y Molecular, Facultad de Medicina, ICBM, Universidad de Chile, Santiago, Chile
| | - Francisco Aguayo
- Programa de Virología, Facultad de Medicina, ICBM, Universidad de Chile, Santiago, Chile
| | - Lilian Jara
- Programa de Genética, Facultad de Medicina, ICBM, Universidad de Chile, Santiago, Chile
| | - Albano Cáceres-Verschae
- Centro de Biología Celular y Biomedicina, Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
| | - Manuel Varas-Godoy
- Centro de Biología Celular y Biomedicina, Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
| | - Víctor M Díaz
- Unidad Asociada CSIC, Programa de Recerca en Cáncer, Departament de Ciéncies Experimentals i de la Salut, Institut Hospital del Mar d'Investigacions Médiques, Universitat Pompeu Fabra, Barcelona, Spain
| | - Antonio García de Herreros
- Unidad Asociada CSIC, Programa de Recerca en Cáncer, Departament de Ciéncies Experimentals i de la Salut, Institut Hospital del Mar d'Investigacions Médiques, Universitat Pompeu Fabra, Barcelona, Spain
| | - Verónica A Burzio
- Facultad de Ciencias de la Vida, Universidad Andrés Bello, Fundación Ciencia & Vida, Andes Biotechnologies SpA, Santiago, Chile
| | - Julio C Tapia
- Programa de Biología Celular y Molecular, Facultad de Medicina, ICBM, Universidad de Chile, Santiago, Chile
| |
Collapse
|
137
|
Regulation of the Mammalian SWI/SNF Family of Chromatin Remodeling Enzymes by Phosphorylation during Myogenesis. BIOLOGY 2020; 9:biology9070152. [PMID: 32635263 PMCID: PMC7407365 DOI: 10.3390/biology9070152] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 06/24/2020] [Accepted: 07/01/2020] [Indexed: 11/16/2022]
Abstract
Myogenesis is the biological process by which skeletal muscle tissue forms. Regulation of myogenesis involves a variety of conventional, epigenetic, and epigenomic mechanisms that control chromatin remodeling, DNA methylation, histone modification, and activation of transcription factors. Chromatin remodeling enzymes utilize ATP hydrolysis to alter nucleosome structure and/or positioning. The mammalian SWItch/Sucrose Non-Fermentable (mSWI/SNF) family of chromatin remodeling enzymes is essential for myogenesis. Here we review diverse and novel mechanisms of regulation of mSWI/SNF enzymes by kinases and phosphatases. The integration of classic signaling pathways with chromatin remodeling enzyme function impacts myoblast viability and proliferation as well as differentiation. Regulated processes include the assembly of the mSWI/SNF enzyme complex, choice of subunits to be incorporated into the complex, and sub-nuclear localization of enzyme subunits. Together these processes influence the chromatin remodeling and gene expression events that control myoblast function and the induction of tissue-specific genes during differentiation.
Collapse
|
138
|
Scheuer R, Philipp SE, Becker A, Nalbach L, Ampofo E, Montenarh M, Götz C. Protein Kinase CK2 Controls Ca V2.1-Dependent Calcium Currents and Insulin Release in Pancreatic β-Cells. Int J Mol Sci 2020; 21:ijms21134668. [PMID: 32630015 PMCID: PMC7370021 DOI: 10.3390/ijms21134668] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 06/18/2020] [Accepted: 06/26/2020] [Indexed: 12/21/2022] Open
Abstract
The regulation of insulin biosynthesis and secretion in pancreatic β-cells is essential for glucose homeostasis in humans. Previous findings point to the highly conserved, ubiquitously expressed serine/threonine kinase CK2 as having a negative regulatory impact on this regulation. In the cell culture model of rat pancreatic β-cells INS-1, insulin secretion is enhanced after CK2 inhibition. This enhancement is preceded by a rise in the cytosolic Ca2+ concentration. Here, we identified the serine residues S2362 and S2364 of the voltage-dependent calcium channel CaV2.1 as targets of CK2 phosphorylation. Furthermore, co-immunoprecipitation experiments revealed that CaV2.1 binds to CK2 in vitro and in vivo. CaV2.1 knockdown experiments showed that the increase in the intracellular Ca2+ concentration, followed by an enhanced insulin secretion upon CK2 inhibition, is due to a Ca2+ influx through CaV2.1 channels. In summary, our results point to a modulating role of CK2 in the CaV2.1-mediated exocytosis of insulin.
Collapse
Affiliation(s)
- Rebecca Scheuer
- Department of Medical Biochemistry and Molecular Biology, Saarland University, Kirrberger Str., bldg. 44, D-66424 Homburg, Germany; (R.S.); (M.M.)
| | - Stephan Ernst Philipp
- Department of Experimental and Clinical Pharmacology and Toxicology, Saarland University Kirrberger Str., bldg. 45-46, D-66424 Homburg, Germany; (S.E.P.); (A.B.)
| | - Alexander Becker
- Department of Experimental and Clinical Pharmacology and Toxicology, Saarland University Kirrberger Str., bldg. 45-46, D-66424 Homburg, Germany; (S.E.P.); (A.B.)
| | - Lisa Nalbach
- Institute for Clinical & Experimental Surgery, Saarland University Kirrberger Str., bldg. 65, D-66424 Homburg, Germany; (L.N.); (E.A.)
| | - Emmanuel Ampofo
- Institute for Clinical & Experimental Surgery, Saarland University Kirrberger Str., bldg. 65, D-66424 Homburg, Germany; (L.N.); (E.A.)
| | - Mathias Montenarh
- Department of Medical Biochemistry and Molecular Biology, Saarland University, Kirrberger Str., bldg. 44, D-66424 Homburg, Germany; (R.S.); (M.M.)
| | - Claudia Götz
- Department of Medical Biochemistry and Molecular Biology, Saarland University, Kirrberger Str., bldg. 44, D-66424 Homburg, Germany; (R.S.); (M.M.)
- Correspondence:
| |
Collapse
|
139
|
Protopopov MV, Vdovin VS, Starosyla SA, Borysenko IP, Prykhod'ko AO, Lukashov SS, Bilokin YV, Bdzhola VG, Yarmoluk SM. Flavone inspired discovery of benzylidenebenzofuran-3(2H)-ones (aurones) as potent inhibitors of human protein kinase CK2. Bioorg Chem 2020; 102:104062. [PMID: 32683178 DOI: 10.1016/j.bioorg.2020.104062] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 05/19/2020] [Accepted: 06/27/2020] [Indexed: 12/14/2022]
Abstract
In this work, we describe the design, synthesis and SAR studies of 2-benzylidenebenzofuran-3-ones (aurones), a new family of potent inhibitors of CK2. A series of aurones have been synthesized. These compounds are structurally related to the synthetic flavones and showed nanomolar activities towards CK2. Biochemical tests revealed that 20 newly synthesized compounds inhibited CK2 with IC50 values in the nanomolar range. Further property-based optimization of aurones was performed, yielding a series of CK2 inhibitors with enhanced lipophilic efficiency. The most potent compound 12m (BFO13) has CLipE = 4.94 (CLogP = 3.5; IC50 = 3.6 nM) commensurable with the best known inhibitors of CK2.
Collapse
Affiliation(s)
- M V Protopopov
- Institute of Molecular Biology and Genetics, NAS of Ukraine, 150 Zabolotnogo St., 03143 Kyiv, Ukraine.
| | - V S Vdovin
- Institute of Molecular Biology and Genetics, NAS of Ukraine, 150 Zabolotnogo St., 03143 Kyiv, Ukraine
| | - S A Starosyla
- Institute of Molecular Biology and Genetics, NAS of Ukraine, 150 Zabolotnogo St., 03143 Kyiv, Ukraine
| | - I P Borysenko
- Institute of Molecular Biology and Genetics, NAS of Ukraine, 150 Zabolotnogo St., 03143 Kyiv, Ukraine; LLC Scientific and Service Firm "Otava", 117/125 Borschagivska St., Suite 79, 03056 Kyiv, Ukraine
| | - A O Prykhod'ko
- Institute of Molecular Biology and Genetics, NAS of Ukraine, 150 Zabolotnogo St., 03143 Kyiv, Ukraine; LLC Scientific and Service Firm "Otava", 117/125 Borschagivska St., Suite 79, 03056 Kyiv, Ukraine
| | - S S Lukashov
- Institute of Molecular Biology and Genetics, NAS of Ukraine, 150 Zabolotnogo St., 03143 Kyiv, Ukraine
| | - Y V Bilokin
- OTAVA Ltd., 400 Applewood Crescent, Unit 100, Vaughan, Ontario L4K 0C3, Canada
| | - V G Bdzhola
- Institute of Molecular Biology and Genetics, NAS of Ukraine, 150 Zabolotnogo St., 03143 Kyiv, Ukraine
| | - S M Yarmoluk
- Institute of Molecular Biology and Genetics, NAS of Ukraine, 150 Zabolotnogo St., 03143 Kyiv, Ukraine
| |
Collapse
|
140
|
Schmitt BM, Boewe AS, Becker V, Nalbach L, Gu Y, Götz C, Menger MD, Laschke MW, Ampofo E. Protein Kinase CK2 Regulates Nerve/Glial Antigen (NG)2-Mediated Angiogenic Activity of Human Pericytes. Cells 2020; 9:cells9061546. [PMID: 32630438 PMCID: PMC7348826 DOI: 10.3390/cells9061546] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 06/15/2020] [Accepted: 06/23/2020] [Indexed: 12/14/2022] Open
Abstract
Protein kinase CK2 is a crucial regulator of endothelial cell proliferation, migration and sprouting during angiogenesis. However, it is still unknown whether this kinase additionally affects the angiogenic activity of other vessel-associated cells. In this study, we investigated the effect of CK2 inhibition on primary human pericytes. We found that CK2 inhibition reduces the expression of nerve/glial antigen (NG)2, a crucial factor which is involved in angiogenic processes. Reporter gene assays revealed a 114 bp transcriptional active region of the human NG2 promoter, whose activity was decreased after CK2 inhibition. Functional analyses demonstrated that the pharmacological inhibition of CK2 by CX-4945 suppresses pericyte proliferation, migration, spheroid sprouting and the stabilization of endothelial tubes. Moreover, aortic rings of NG2−/− mice showed a significantly reduced vascular sprouting when compared to rings of NG2+/+ mice, indicating that NG2 is an important regulator of the angiogenic activity of pericytes. In vivo, implanted Matrigel plugs containing CX-4945-treated pericytes exhibited a lower microvessel density when compared to controls. These findings demonstrate that CK2 regulates the angiogenic activity of pericytes through NG2 gene expression. Hence, the inhibition of CK2 represents a promising anti-angiogenic strategy, because it does not only target endothelial cells, but also vessel-associated pericytes.
Collapse
Affiliation(s)
- Beate M. Schmitt
- Institute for Clinical & Experimental Surgery, Saarland University, 66421 Homburg, Germany; (B.M.S.); (A.S.B.); (V.B.); (L.N.); (Y.G.); (M.D.M.); (M.W.L.)
| | - Anne S. Boewe
- Institute for Clinical & Experimental Surgery, Saarland University, 66421 Homburg, Germany; (B.M.S.); (A.S.B.); (V.B.); (L.N.); (Y.G.); (M.D.M.); (M.W.L.)
| | - Vivien Becker
- Institute for Clinical & Experimental Surgery, Saarland University, 66421 Homburg, Germany; (B.M.S.); (A.S.B.); (V.B.); (L.N.); (Y.G.); (M.D.M.); (M.W.L.)
| | - Lisa Nalbach
- Institute for Clinical & Experimental Surgery, Saarland University, 66421 Homburg, Germany; (B.M.S.); (A.S.B.); (V.B.); (L.N.); (Y.G.); (M.D.M.); (M.W.L.)
| | - Yuan Gu
- Institute for Clinical & Experimental Surgery, Saarland University, 66421 Homburg, Germany; (B.M.S.); (A.S.B.); (V.B.); (L.N.); (Y.G.); (M.D.M.); (M.W.L.)
| | - Claudia Götz
- Medical Biochemistry and Molecular Biology, Saarland University, 66421 Homburg, Germany;
| | - Michael D. Menger
- Institute for Clinical & Experimental Surgery, Saarland University, 66421 Homburg, Germany; (B.M.S.); (A.S.B.); (V.B.); (L.N.); (Y.G.); (M.D.M.); (M.W.L.)
| | - Matthias W. Laschke
- Institute for Clinical & Experimental Surgery, Saarland University, 66421 Homburg, Germany; (B.M.S.); (A.S.B.); (V.B.); (L.N.); (Y.G.); (M.D.M.); (M.W.L.)
| | - Emmanuel Ampofo
- Institute for Clinical & Experimental Surgery, Saarland University, 66421 Homburg, Germany; (B.M.S.); (A.S.B.); (V.B.); (L.N.); (Y.G.); (M.D.M.); (M.W.L.)
- Correspondence: ; Tel.: +49-6841-16-26561; Fax: +49-6841-16-26553
| |
Collapse
|
141
|
Hashemolhosseini S. The role of protein kinase CK2 in skeletal muscle: Myogenesis, neuromuscular junctions, and rhabdomyosarcoma. Neurosci Lett 2020; 729:135001. [DOI: 10.1016/j.neulet.2020.135001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 04/14/2020] [Accepted: 04/16/2020] [Indexed: 01/08/2023]
|
142
|
1,2,4-Triazolin-5-thione derivatives with anticancer activity as CK1γ kinase inhibitors. Bioorg Chem 2020; 99:103806. [DOI: 10.1016/j.bioorg.2020.103806] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 03/27/2020] [Accepted: 03/28/2020] [Indexed: 12/17/2022]
|
143
|
Perera Y, Melão A, Ramón AC, Vázquez D, Ribeiro D, Perea SE, Barata JT. Clinical-Grade Peptide-Based Inhibition of CK2 Blocks Viability and Proliferation of T-ALL Cells and Counteracts IL-7 Stimulation and Stromal Support. Cancers (Basel) 2020; 12:cancers12061377. [PMID: 32471246 PMCID: PMC7352628 DOI: 10.3390/cancers12061377] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 05/18/2020] [Accepted: 05/24/2020] [Indexed: 02/07/2023] Open
Abstract
Despite remarkable advances in the treatment of T-cell acute lymphoblastic leukemia (T-ALL), relapsed cases are still a major challenge. Moreover, even successful cases often face long-term treatment-associated toxicities. Targeted therapeutics may overcome these limitations. We have previously demonstrated that casein kinase 2 (CK2)-mediated phosphatase and tensin homologue (PTEN) posttranslational inactivation, and consequent phosphatidylinositol 3-kinase (PI3K)/Akt signaling hyperactivation, leads to increased T-ALL cell survival and proliferation. We also revealed the existence of a crosstalk between CK2 activity and the signaling mediated by interleukin 7 (IL-7), a critical leukemia-supportive cytokine. Here, we evaluated the impact of CIGB-300, a the clinical-grade peptide-based CK2 inhibitor CIGB-300 on T-ALL biology. We demonstrate that CIGB-300 decreases the viability and proliferation of T-ALL cell lines and diagnostic patient samples. Moreover, CIGB-300 overcomes IL-7-mediated T-ALL cell growth and viability, while preventing the positive effects of OP9-delta-like 1 (DL1) stromal support on leukemia cells. Signaling and pull-down experiments indicate that the CK2 substrate nucleophosmin 1 (B23/NPM1) and CK2 itself are the molecular targets for CIGB-300 in T-ALL cells. However, B23/NPM1 silencing only partially recapitulates the anti-leukemia effects of the peptide, suggesting that CIGB-300-mediated direct binding to CK2, and consequent CK2 inactivation, is the mechanism by which CIGB-300 downregulates PTEN S380 phosphorylation and inhibits PI3K/Akt signaling pathway. In the context of IL-7 stimulation, CIGB-300 blocks janus kinase/signal transducer and activator of transcription (JAK/STAT) signaling pathway in T-ALL cells. Altogether, our results strengthen the case for anti-CK2 therapeutic intervention in T-ALL, demonstrating that CIGB-300 (given its ability to circumvent the effects of pro-leukemic microenvironmental cues) may be a valid tool for clinical intervention in this aggressive malignancy.
Collapse
Affiliation(s)
- Yasser Perera
- Laboratory of Molecular Oncology, Center for Genetic Engineering and Biotechnology, Havana 10600, Cuba; (Y.P.); (A.C.R.); (S.E.P.)
| | - Alice Melão
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisbon, Portugal; (A.M.); (D.R.)
| | - Ailyn C. Ramón
- Laboratory of Molecular Oncology, Center for Genetic Engineering and Biotechnology, Havana 10600, Cuba; (Y.P.); (A.C.R.); (S.E.P.)
| | - Dania Vázquez
- Pharmacogenomics Department, Center for Genetic Engineering and Biotechnology, Havana 10600, Cuba;
| | - Daniel Ribeiro
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisbon, Portugal; (A.M.); (D.R.)
| | - Silvio E. Perea
- Laboratory of Molecular Oncology, Center for Genetic Engineering and Biotechnology, Havana 10600, Cuba; (Y.P.); (A.C.R.); (S.E.P.)
| | - João T. Barata
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisbon, Portugal; (A.M.); (D.R.)
- Correspondence:
| |
Collapse
|
144
|
Afzal M, Kren BT, Naveed AK, Trembley JH, Ahmed K. Protein kinase CK2 impact on intracellular calcium homeostasis in prostate cancer. Mol Cell Biochem 2020; 470:131-143. [PMID: 32436081 DOI: 10.1007/s11010-020-03752-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Accepted: 05/08/2020] [Indexed: 01/06/2023]
Abstract
Protein kinase CK2 plays multiple roles in cell function in normal and disease states. CK2 is elevated in numerous types of cancer cells, and CK2 suppression of apoptosis represents a key link to the cancer cell phenotype. CK2 regulation of cell survival and death involves diverse processes, and our previous work suggested that mitochondrial machinery is a key locus of this function. One of the earliest responses of prostate cells to inhibition of CK2 is a change in mitochondrial membrane potential, possibly associated with Ca2+ signaling. Thus, in the present work, we investigated early impact of CK2 on intracellular Ca2+ dynamics. Three prostate cancer (PCa) cell lines, PC3-LN4, C4-2B, and 22Rv1, were studied. PCa cells were treated with the CK2 small molecule inhibitors 4,5,6,7-tetrabrombenzotriazole and CX-4945 followed by analysis of Ca2+ levels in various cellular compartments over time. The results showed dose-dependent loss in cytosolic Ca2+ levels starting within 2 min and reaching maximal loss within 5-10 min. There was a concomitant increase in Ca2+ in the endoplasmic reticulum (ER) and mitochondrial compartments. The results suggest that inhibition of CK2 activity results in a rapid movement of Ca2+ out of the cytosol and into the ER and mitochondria, which may be among the earliest contributory factors for induction of apoptosis in cells subjected to inhibition of CK2. In cells with death-inducing levels of CK2 inhibition, total cellular Ca2+ levels dropped at 2 h post-treatment. These novel observations represent a potential mechanism underlying regulation of cell survival and death by CK2 activity.
Collapse
Affiliation(s)
- Muhammad Afzal
- Research Service, Minneapolis VA Health Care System, Minneapolis, MN, 55417, USA
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN, 55455, USA
- Department of Biochemistry, Riphah International University, Islamabad, Pakistan
| | - Betsy T Kren
- Research Service, Minneapolis VA Health Care System, Minneapolis, MN, 55417, USA
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN, 55455, USA
| | - A Khaliq Naveed
- Department of Biochemistry, Riphah International University, Islamabad, Pakistan
| | - Janeen H Trembley
- Research Service, Minneapolis VA Health Care System, Minneapolis, MN, 55417, USA
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN, 55455, USA
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Khalil Ahmed
- Research Service, Minneapolis VA Health Care System, Minneapolis, MN, 55417, USA.
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN, 55455, USA.
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN, 55455, USA.
- Department of Urology, University of Minnesota, Minneapolis, MN, 55455, USA.
| |
Collapse
|
145
|
Reikhardt BA, Shabanov PD. [Effect of etimizole structural analogues on protein kinase CK2, protein phosphorylation and transcription of chromatin in rat brain cortex and hippocampus]. BIOMEDIT︠S︡INSKAI︠A︡ KHIMII︠A︡ 2020; 66:130-137. [PMID: 32420893 DOI: 10.18097/pbmc20206602130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Protein kinase CK2 is an important enzyme in the nervous system. The nuclear forms of CK2 regulate chromatin structure and gene expression, the key processes for long-term memory formation. Memory modulators, the Structural Analogues of Etimizole (SAE), were able to increase or decrease the activity of chromatin-associated CK in the cortex and hippocampus of rat brain in vitro. In vivo memory enhancers from SAE-group (3 mg/kg) stimulated CK2 activity and the transcriptional ability of chromatin in the cortex and hippocampus, starting from 30 min with a peak for 60 min and a duration up to 180 min. At these periods the memory inhibitor from the SAE-group reduced CK2 activity and chromatin transcription. It is assumed that the modulating effect of SAE on CK2 activity and transcription underlies the effects of these compounds on long-term memory.
Collapse
Affiliation(s)
- B A Reikhardt
- Institute of Experimental Medicine, St. Petersburg, Russia
| | - P D Shabanov
- Institute of Experimental Medicine, St. Petersburg, Russia
| |
Collapse
|
146
|
Kröger L, Daniliuc CG, Ensan D, Borgert S, Nienberg C, Lauwers M, Steinkrüger M, Jose J, Pietsch M, Wünsch B. Synthesis and SAR of Tetracyclic Inhibitors of Protein Kinase CK2 Derived from Furocarbazole W16. ChemMedChem 2020; 15:871-881. [PMID: 32168422 PMCID: PMC7418559 DOI: 10.1002/cmdc.202000040] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 03/06/2020] [Indexed: 12/16/2022]
Abstract
The serine/threonine kinase CK2 modulates the activity of more than 300 proteins and thus plays a crucial role in various physiological and pathophysiological processes including neurodegenerative disorders of the central nervous system and cancer. The enzymatic activity of CK2 is controlled by the equilibrium between the heterotetrameric holoenzyme CK2α2β2 and its monomeric subunits CK2α and CK2β. A series of analogues of W16 ((3aR,4S,10S,10aS)‐4‐{[(S)‐4‐benzyl‐2‐oxo‐1,3‐oxazolidin‐3‐yl]carbonyl}‐10‐(3,4,5‐trimethoxyphenyl)‐4,5,10,10a‐tetrahydrofuro[3,4‐b]carbazole‐1,3(3aH)‐dione ((+)‐3
a)) was prepared in an one‐pot, three‐component Levy reaction. The stereochemistry of the tetracyclic compounds was analyzed. Additionally, the chemically labile anhydride structure of the furocarbazoles 3 was replaced by a more stable imide (9) and N‐methylimide (10) substructure. The enantiomer (−)‐3
a (Ki=4.9 μM) of the lead compound (+)‐3
a (Ki=31 μM) showed a more than sixfold increased inhibition of the CK2α/CK2β interaction (protein‐protein interaction inhibition, PPII) in a microscale thermophoresis (MST) assay. However, (−)‐3
a did not show an increased enzyme inhibition of the CK2α2β2 holoenzyme, the CK2α subunit or the mutated CK2α′ C336S subunit in the capillary electrophoresis assay. In the pyrrolocarbazole series, the imide (−)‐9
a (Ki=3.6 μM) and the N‐methylimide (+)‐10
a (Ki=2.8 μM) represent the most promising inhibitors of the CK2α/CK2β interaction. However, neither compound could inhibit enzymatic activity. Unexpectedly, the racemic tetracyclic pyrrolocarbazole (±)‐12, with a carboxy moiety in the 4‐position, displays the highest CK2α/CK2β interaction inhibition (Ki=1.8 μM) of this series of compounds.
Collapse
Affiliation(s)
- Lukas Kröger
- Institut für Pharmazeutische und Medizinische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstraße 48, 8149, Münster, Germany
| | - Constantin G Daniliuc
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany
| | - Deeba Ensan
- Institut für Pharmazeutische und Medizinische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstraße 48, 8149, Münster, Germany
| | - Sebastian Borgert
- Institut für Pharmazeutische und Medizinische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstraße 48, 8149, Münster, Germany
| | - Christian Nienberg
- Institut für Pharmazeutische und Medizinische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstraße 48, 8149, Münster, Germany
| | - Miriam Lauwers
- Medizinische Fakultät, Universität Köln, Gleueler Straße 24, 50931, Köln, Germany
| | - Michaela Steinkrüger
- Medizinische Fakultät, Universität Köln, Gleueler Straße 24, 50931, Köln, Germany
| | - Joachim Jose
- Institut für Pharmazeutische und Medizinische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstraße 48, 8149, Münster, Germany
| | - Markus Pietsch
- Medizinische Fakultät, Universität Köln, Gleueler Straße 24, 50931, Köln, Germany
| | - Bernhard Wünsch
- Institut für Pharmazeutische und Medizinische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstraße 48, 8149, Münster, Germany.,Cells-in-Motion Cluster of Excellence (EXC 1003-CiM), Westfälische Wilhelms-Universität Münster, Waldeyerstraße 15, 48149, Münster, Germany
| |
Collapse
|
147
|
Kim JM, Yang YS, Park KH, Ge X, Xu R, Li N, Song M, Chun H, Bok S, Charles JF, Filhol-Cochet O, Boldyreff B, Dinter T, Yu PB, Kon N, Gu W, Takarada T, Greenblatt MB, Shim JH. A RUNX2 stabilization pathway mediates physiologic and pathologic bone formation. Nat Commun 2020; 11:2289. [PMID: 32385263 PMCID: PMC7210266 DOI: 10.1038/s41467-020-16038-6] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Accepted: 04/10/2020] [Indexed: 12/21/2022] Open
Abstract
The osteoblast differentiation capacity of skeletal stem cells (SSCs) must be tightly regulated, as inadequate bone formation results in low bone mass and skeletal fragility, and over-exuberant osteogenesis results in heterotopic ossification (HO) of soft tissues. RUNX2 is essential for tuning this balance, but the mechanisms of posttranslational control of RUNX2 remain to be fully elucidated. Here, we identify that a CK2/HAUSP pathway is a key regulator of RUNX2 stability, as Casein kinase 2 (CK2) phosphorylates RUNX2, recruiting the deubiquitinase herpesvirus-associated ubiquitin-specific protease (HAUSP), which stabilizes RUNX2 by diverting it away from ubiquitin-dependent proteasomal degradation. This pathway is important for both the commitment of SSCs to osteoprogenitors and their subsequent maturation. This CK2/HAUSP/RUNX2 pathway is also necessary for HO, as its inhibition blocked HO in multiple models. Collectively, active deubiquitination of RUNX2 is required for bone formation and this CK2/HAUSP deubiquitination pathway offers therapeutic opportunities for disorders of inappropriate mineralization.
Collapse
Affiliation(s)
- Jung-Min Kim
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA, USA
| | - Yeon-Suk Yang
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA, USA
| | - Kwang Hwan Park
- Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul, South Korea
| | - Xianpeng Ge
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA, USA
| | - Ren Xu
- State Key Laboratory of Cellular Stress Biology, Xiamen University, Fujian, China
| | - Na Li
- State Key Laboratory of Cellular Stress Biology, Xiamen University, Fujian, China
| | - Minkyung Song
- Department of integrative biotechnology, Sungkyunkwan University, Suwon, South Korea
| | - Hyunho Chun
- Department of Mathematical Sciences, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
| | - Seoyeon Bok
- Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, NY, USA
| | - Julia F Charles
- Department of Orthopedics and Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Odile Filhol-Cochet
- INSERM U1036, pour le Vivant/Biologie du Cancer et de l'Infection, Commissariat à l'Énergie Atomique et aux Énerigies Alternatives Grenoble, Grenoble, France
| | | | - Teresa Dinter
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Paul B Yu
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Ning Kon
- Institute of Cancer Genetics, College of Physicians and Surgeons of Columbia University, New York, NY, USA
| | - Wei Gu
- Institute of Cancer Genetics, College of Physicians and Surgeons of Columbia University, New York, NY, USA
- Department of Pathology and Cell Biology, College of Physicians and Surgeons of Columbia University, New York, NY, USA
| | - Takeshi Takarada
- Department of Regenerative Science, Okayama University Graduate School of Medicine, Okayama, Japan
| | - Matthew B Greenblatt
- Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, NY, USA.
| | - Jae-Hyuck Shim
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA, USA.
- Li Weibo Institute for Rare Diseases Research, University of Massachusetts Medical School, Worcester, MA, USA.
| |
Collapse
|
148
|
Identification of Novel Targets of RBM5 in the Healthy and Injured Brain. Neuroscience 2020; 440:299-315. [PMID: 32335213 DOI: 10.1016/j.neuroscience.2020.04.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 04/15/2020] [Accepted: 04/16/2020] [Indexed: 11/20/2022]
Abstract
The tumor suppressor RNA-binding motif 5 (RBM5) regulates the expression levels and cassette exon-definition (i.e. splicing) of a select set of mRNAs in a tissue-specific manner. Most RBM5-regulated targets were identified in oncological investigations and frequently involve genes which mediate apoptotic cell death. Little is known about the role of RBM5 in the brain. Also, it is unclear if a brain injury may be required to detect RBM5 mediated effects on pro-apoptotic genes due to their low expression levels in the healthy adult CNS at baseline. Conditional/floxed (brain-specific) gene deleter mice were generated to elucidate CNS-specific RBM5 mRNA targets. Male/female mice were subjected to a severe controlled cortical impact (CCI) traumatic brain injury (TBI) in order to increase the background expression of pro-death mRNAs and facilitate testing of the hypothesis that RBM5 inhibition decreases post-injury upregulation of caspases/FAS in the CNS. As expected, a CCI increased caspases/FAS mRNA in the injured cortex. RBM5 KO did not affect their levels or splicing. Surprisingly, KO increased the mRNA levels of novel targets including casein kinase 2 alpha prime interacting protein (Csnka2ip/CKT2) - a gene not thought to be expressed in the brain, contrary to findings here. Twenty-two unique splicing events were also detected in KOs including increased block-inclusion of cassette exons 20-22 in regulating synaptic membrane exocytosis 2 (Rims2). In conclusion, here we used genome-wide transcriptomic analysis on healthy and injured RBM5 KO mouse brain tissue to elucidate the first known gene targets of this enigmatic RBP in this CNS.
Collapse
|
149
|
Hehenberger E, Eitel M, Fortunato SAV, Miller DJ, Keeling PJ, Cahill MA. Early eukaryotic origins and metazoan elaboration of MAPR family proteins. Mol Phylogenet Evol 2020; 148:106814. [PMID: 32278076 DOI: 10.1016/j.ympev.2020.106814] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 03/24/2020] [Accepted: 04/01/2020] [Indexed: 01/01/2023]
Abstract
The membrane-associated progesterone receptor (MAPR) family consists of heme-binding proteins containing a cytochrome b5 (cytb5) domain characterized by the presence of a MAPR-specific interhelical insert region (MIHIR) between helices 3 and 4 of the canonical cytb5-domain fold. Animals possess three MAPR genes (PGRMC-like, Neuferricin and Neudesin). Here we show that all three animal MAPR genes were already present in the common ancestor of the opisthokonts (comprising animals and fungi as well as related single-celled taxa). All three MAPR genes acquired extensions C-terminal to the cytb5 domain, either before or with the evolution of animals. The archetypical MAPR protein, progesterone receptor membrane component 1 (PGRMC1), contains phosphorylated tyrosines Y139 and Y180. The combination of Y139/Y180 appeared in the common ancestor of cnidarians and bilaterians, along with an early embryological organizer and synapsed neurons, and is strongly conserved in all bilaterian animals. A predicted protein interaction motif in the PGRMC1 MIHIR is potentially regulated by Y139 phosphorylation. A multilayered model of animal MAPR function acquisition includes some pre-metazoan functions (e.g., heme binding and cytochrome P450 interactions) and some acquired animal-specific functions that involve regulation of strongly conserved protein interaction motifs acquired by animals (Metazoa). This study provides a conceptual framework for future studies, against which especially PGRMC1's multiple functions can perhaps be stratified and functionally dissected.
Collapse
Affiliation(s)
- Elisabeth Hehenberger
- Department of Botany, University of British Columbia, 3529-6270 University Boulevard, Vancouver, BC V6T 1Z4, Canada
| | - Michael Eitel
- Department of Earth and Environmental Sciences, Paleontology and Geobiology, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Sofia A V Fortunato
- ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, QLD 4811, Australia
| | - David J Miller
- ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, QLD 4811, Australia
| | - Patrick J Keeling
- Department of Botany, University of British Columbia, 3529-6270 University Boulevard, Vancouver, BC V6T 1Z4, Canada
| | - Michael A Cahill
- School of Biomedical Sciences, Charles Sturt University, Wagga Wagga, NSW 2678, Australia; ACRF Department of Cancer Biology and Therapeutics, The John Curtin School of Medical Research, Canberra, ACT 2601, Australia.
| |
Collapse
|
150
|
Demulder M, De Veylder L, Loris R. Crystal structure of Arabidopsis thaliana casein kinase 2 α1. Acta Crystallogr F Struct Biol Commun 2020; 76:182-191. [PMID: 32254052 PMCID: PMC7137383 DOI: 10.1107/s2053230x20004537] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Accepted: 04/01/2020] [Indexed: 11/11/2022] Open
Abstract
Casein kinase 2 (CK2) is a ubiquitous pleiotropic enzyme that is highly conserved across eukaryotic kingdoms. CK2 is singular amongst kinases as it is highly rigid and constitutively active. Arabidopsis thaliana is widely used as a model system in molecular plant research; the biological functions of A. thaliana CK2 are well studied in vivo and many of its substrates have been identified. Here, crystal structures of the α subunit of A. thaliana CK2 in three crystal forms and of its complex with the nonhydrolyzable ATP analog AMppNHp are presented. While the C-lobe of the enzyme is highly rigid, structural plasticity is observed for the N-lobe. Small but significant displacements within the active cleft are necessary in order to avoid steric clashes with the AMppNHp molecule. Binding of AMppNHp is influenced by a rigid-body motion of the N-lobe that was not previously recognized in maize CK2.
Collapse
Affiliation(s)
- Manon Demulder
- Structural Biology Brussels, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium
- Center for Structural Biology, VIB, Pleinlaan 2, B-1050 Brussels, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, B-9052 Ghent, Belgium
| | - Lieven De Veylder
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, B-9052 Ghent, Belgium
- Center for Plant Systems Biology, VIB, Technologiepark 71, B-9052 Ghent, Belgium
| | - Remy Loris
- Structural Biology Brussels, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium
- Center for Structural Biology, VIB, Pleinlaan 2, B-1050 Brussels, Belgium
| |
Collapse
|