1
|
Paderni D, Voccia M, Macedi E, Formica M, Giorgi L, Caporaso L, Fusi V. A combined solid state, solution and DFT study of a dimethyl-cyclen-Pd(II) complex. Dalton Trans 2024. [PMID: 39133309 DOI: 10.1039/d4dt01791a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/13/2024]
Abstract
A new palladium(II) complex containing the previously synthesized 4,10-bis[(3-hydroxy-4-pyron-2-yl)methyl]-1,7-dimethyl-1,4,7,10-tetraazacyclododecane ligand maltonis was prepared and characterized both in solution and in the solid state. Hirshfeld surface and energy framework analyses were also performed. Because maltonis already showed antineoplastic activity, the complexation of Pd(II), chosen as an alternative to Pt(II), was investigated to study its possible biological activity. UV-vis and NMR studies confirmed the formation and stability of the complex in aqueous solution at physiological pH. X-ray diffraction data revealed a structure where the Pd(II) ion is lodged in the dimethyl-cyclen cavity, with maltol rings facing each other (closed shape) even if they are not involved in the coordination. DFT analysis was performed in order to understand the most stable shape of the complex. In view of evaluating its possible bioactive conformation, the DFT study suggested a slight energetic preference for the closed one. The resulting closed complex was stabilized in the X-ray structure by intermolecular interactions that replace the intramolecular interactions present in the optimized complex. According to the DFT calculated formation energies, notwithstanding its rarity, the Pd(II) complex of maltonis is the thermodynamically preferred one among analogous complexes containing different metal ions (Pt(II), Co(II), and Cu(II)). Finally, to study its possible biological activity, the interaction between the Pd(II) complex of maltonis and nucleosides was evaluated through NMR and DFT calculations, revealing a possible interaction with purines via the maltol moieties.
Collapse
Affiliation(s)
- Daniele Paderni
- Department of Pure and Applied Sciences, University of Urbino, via Ca' le Suore 2-4, 61029 Urbino, Italy.
| | - Maria Voccia
- Department of Chemistry and Biology, University of Salerno, via Giovanni Paolo II 132, 84084 Fisciano, Salerno, Italy
| | - Eleonora Macedi
- Department of Pure and Applied Sciences, University of Urbino, via Ca' le Suore 2-4, 61029 Urbino, Italy.
| | - Mauro Formica
- Department of Pure and Applied Sciences, University of Urbino, via Ca' le Suore 2-4, 61029 Urbino, Italy.
| | - Luca Giorgi
- Department of Pure and Applied Sciences, University of Urbino, via Ca' le Suore 2-4, 61029 Urbino, Italy.
| | - Lucia Caporaso
- Department of Chemistry and Biology, University of Salerno, via Giovanni Paolo II 132, 84084 Fisciano, Salerno, Italy
| | - Vieri Fusi
- Department of Pure and Applied Sciences, University of Urbino, via Ca' le Suore 2-4, 61029 Urbino, Italy.
| |
Collapse
|
2
|
Amatori S, Persico G, Cantatore F, Rusin M, Formica M, Giorgi L, Macedi E, Casciaro F, Errico Provenzano A, Gambardella S, Noberini R, Bonaldi T, Fusi V, Giorgio M, Fanelli M. Small molecule-induced epigenomic reprogramming of APL blasts leading to antiviral-like response and c-MYC downregulation. Cancer Gene Ther 2022; 30:671-682. [PMID: 36536122 DOI: 10.1038/s41417-022-00576-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 11/23/2022] [Accepted: 11/30/2022] [Indexed: 12/23/2022]
Abstract
AbstractAcute promyelocytic leukemia (APL) is an aggressive subtype of acute myeloid leukemia (AML) in which the PML/RARα fusion protein exerts oncogenic activities by recruiting repressive complexes to the promoter of specific target genes. Other epigenetic perturbations, as alterations of histone H3 lysine 9 trimethylation (H3K9me3), have been frequently found in AMLs and are associated with leukemogenesis and leukemia progression. Here, we characterized the epigenomic effects of maltonis, a novel maltol-derived molecule, in APL cells. We demonstrate that maltonis treatments induce a profound remodulation of the histone code, reducing global H3K9me3 signal and modulating other histone post-translational modifications. Transcriptomic and epigenomic analyses revealed that maltonis exposure induces changes of genes expression associated with a genomic redistribution of histone H3 lysine 4 trimethylation (H3K4me3) and lysine 27 acetylation (H3K27ac). Upregulation of interferon alpha and gamma response and downregulation of c-MYC target genes, in function of c-MYC reduced expression (monitored in all the hematopoietic neoplasms tested), represent the most significant modulated pathways. These data demonstrate the ability of maltonis to epigenetically reprogram the gene expression profile of APL cells, inducing an intriguing antiviral-like response, concomitantly with the downregulation of c-MYC-related pathways, thus making it an attractive candidate for antileukemic therapy.
Collapse
|
3
|
Giorgi L, Ambrosi G, Paderni D, Conti L, Amatori S, Romagnoli F, Rossi P, Formica M, Macedi E, Giorgi C, Paoli P, Fanelli M, Fusi V. Bis-maltol-polyamine family: structural modifications at strategic positions. Synthesis, coordination and antineoplastic activity of two new ligands. NEW J CHEM 2021. [DOI: 10.1039/d0nj05327a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Substitution at the maltol C6 position affects the antineoplastic and coordination properties of Malten, acting on degradation time, binding ability and biological activity.
Collapse
Affiliation(s)
- Luca Giorgi
- Dipartimento di Scienze Pure e Applicate, Università degli Studi di Urbino “Carlo Bo”
- I-61029 Urbino
- Italy
| | - Gianluca Ambrosi
- Dipartimento di Scienze Pure e Applicate, Università degli Studi di Urbino “Carlo Bo”
- I-61029 Urbino
- Italy
| | - Daniele Paderni
- Dipartimento di Scienze Pure e Applicate, Università degli Studi di Urbino “Carlo Bo”
- I-61029 Urbino
- Italy
| | - Luca Conti
- Department of Chemistry “Ugo Schiff”, University of Florence
- 50019 Sesto Fiorentino
- Italy
| | - Stefano Amatori
- Department of Biomolecular Sciences, Molecular Pathology Laboratory “PaoLa” University of Urbino “Carlo Bo”
- 61032 Fano
- Italy
| | - Francesca Romagnoli
- Dipartimento di Scienze Pure e Applicate, Università degli Studi di Urbino “Carlo Bo”
- I-61029 Urbino
- Italy
| | - Patrizia Rossi
- Department of Industrial Engineering, University of Florence
- 50139 Florence
- Italy
| | - Mauro Formica
- Dipartimento di Scienze Pure e Applicate, Università degli Studi di Urbino “Carlo Bo”
- I-61029 Urbino
- Italy
| | - Eleonora Macedi
- Dipartimento di Scienze Pure e Applicate, Università degli Studi di Urbino “Carlo Bo”
- I-61029 Urbino
- Italy
| | - Claudia Giorgi
- Department of Chemistry “Ugo Schiff”, University of Florence
- 50019 Sesto Fiorentino
- Italy
| | - Paola Paoli
- Department of Industrial Engineering, University of Florence
- 50139 Florence
- Italy
| | - Mirco Fanelli
- Department of Biomolecular Sciences, Molecular Pathology Laboratory “PaoLa” University of Urbino “Carlo Bo”
- 61032 Fano
- Italy
| | - Vieri Fusi
- Dipartimento di Scienze Pure e Applicate, Università degli Studi di Urbino “Carlo Bo”
- I-61029 Urbino
- Italy
| |
Collapse
|
4
|
Godel M, Morena D, Ananthanarayanan P, Buondonno I, Ferrero G, Hattinger CM, Di Nicolantonio F, Serra M, Taulli R, Cordero F, Riganti C, Kopecka J. Small Nucleolar RNAs Determine Resistance to Doxorubicin in Human Osteosarcoma. Int J Mol Sci 2020; 21:ijms21124500. [PMID: 32599901 PMCID: PMC7349977 DOI: 10.3390/ijms21124500] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 06/19/2020] [Accepted: 06/21/2020] [Indexed: 02/07/2023] Open
Abstract
Doxorubicin (Dox) is one of the most important first-line drugs used in osteosarcoma therapy. Multiple and not fully clarified mechanisms, however, determine resistance to Dox. With the aim of identifying new markers associated with Dox-resistance, we found a global up-regulation of small nucleolar RNAs (snoRNAs) in human Dox-resistant osteosarcoma cells. We investigated if and how snoRNAs are linked to resistance. After RT-PCR validation of snoRNAs up-regulated in osteosarcoma cells with different degrees of resistance to Dox, we overexpressed them in Dox-sensitive cells. We then evaluated Dox cytotoxicity and changes in genes relevant for osteosarcoma pathogenesis by PCR arrays. SNORD3A, SNORA13 and SNORA28 reduced Dox-cytotoxicity when over-expressed in Dox-sensitive cells. In these cells, GADD45A and MYC were up-regulated, TOP2A was down-regulated. The same profile was detected in cells with acquired resistance to Dox. GADD45A/MYC-silencing and TOP2A-over-expression counteracted the resistance to Dox induced by snoRNAs. We reported for the first time that snoRNAs induce resistance to Dox in human osteosarcoma, by modulating the expression of genes involved in DNA damaging sensing, DNA repair, ribosome biogenesis, and proliferation. Targeting snoRNAs or down-stream genes may open new treatment perspectives in chemoresistant osteosarcomas.
Collapse
Affiliation(s)
- Martina Godel
- Department of Oncology, University of Torino, 1026 Torino, Italy; (M.G.); (D.M.); (P.A.); (I.B.); (F.D.N.); (R.T.)
| | - Deborah Morena
- Department of Oncology, University of Torino, 1026 Torino, Italy; (M.G.); (D.M.); (P.A.); (I.B.); (F.D.N.); (R.T.)
| | - Preeta Ananthanarayanan
- Department of Oncology, University of Torino, 1026 Torino, Italy; (M.G.); (D.M.); (P.A.); (I.B.); (F.D.N.); (R.T.)
| | - Ilaria Buondonno
- Department of Oncology, University of Torino, 1026 Torino, Italy; (M.G.); (D.M.); (P.A.); (I.B.); (F.D.N.); (R.T.)
| | - Giulio Ferrero
- Department of Computer Science, University of Torino, 10149 Torino, Italy; (G.F.); (F.C.)
- Department of Clinical and Biological Sciences, University of Torino, 10043 Orbassano, Italy
| | - Claudia M. Hattinger
- Laboratory of Experimental Oncology, Pharmacogenomics and Pharmacogenetics Research Unit, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy; (C.M.H.); (M.S.)
| | - Federica Di Nicolantonio
- Department of Oncology, University of Torino, 1026 Torino, Italy; (M.G.); (D.M.); (P.A.); (I.B.); (F.D.N.); (R.T.)
- Candiolo Cancer Institute, FPO–IRCCS, 10060 Candiolo, Italy
| | - Massimo Serra
- Laboratory of Experimental Oncology, Pharmacogenomics and Pharmacogenetics Research Unit, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy; (C.M.H.); (M.S.)
| | - Riccardo Taulli
- Department of Oncology, University of Torino, 1026 Torino, Italy; (M.G.); (D.M.); (P.A.); (I.B.); (F.D.N.); (R.T.)
| | - Francesca Cordero
- Department of Computer Science, University of Torino, 10149 Torino, Italy; (G.F.); (F.C.)
| | - Chiara Riganti
- Department of Oncology, University of Torino, 1026 Torino, Italy; (M.G.); (D.M.); (P.A.); (I.B.); (F.D.N.); (R.T.)
- Correspondence: (C.R.); (J.K.); Tel.: +39-0116705857 (C.R.); +39-0116705849 (J.K.)
| | - Joanna Kopecka
- Department of Oncology, University of Torino, 1026 Torino, Italy; (M.G.); (D.M.); (P.A.); (I.B.); (F.D.N.); (R.T.)
- Correspondence: (C.R.); (J.K.); Tel.: +39-0116705857 (C.R.); +39-0116705849 (J.K.)
| |
Collapse
|
5
|
Rossi P, Macedi E, Formica M, Giorgi L, Paoli P, Fusi V. Hetero-Tetranuclear Cu 2+ /Ca 2+ /Ca 2+ /Cu 2+ Architectures Based On Malten Ligand: Scaffold for Anion Binding. Chempluschem 2020; 85:1179-1189. [PMID: 32500597 DOI: 10.1002/cplu.202000307] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 05/14/2020] [Indexed: 01/05/2023]
Abstract
The hetero-tetranuclear Cu2+ /Ca2+ /Ca2+ /Cu2+ complex obtained with the N,N'-bis((3-hydroxy-4-pyron-2-yl)methyl)-N,N'-dimethylethylendiamine (Malten) ligand has been studied in solid and solution states as scaffold to bind anions. Three crystal structures showing the same metal ions sequence have been examined; they display a tetracharged complex cation neutralized by four monocharged anions. The anions play two different roles: as coordinated (two ClO4 - , Cl- or NO3 - ) or ancillary (two ClO4 - ) guests. The tetranuclear scaffold hosts two anions also in aqueous and ethanol solutions. Spectrophotometric studies in ethanol allowed to determine the addition constant values for Cl- and Br- (Log K1-2 =4.43(4), 4.39(3) for Cl- , 3.80(3), 3.54(2) for Br- ) while the others, although bound, showed lower affinity for the scaffold. Both the crystals and the solutions change their color depending on the added anion, namely pink, dark green or blue in the presence of ClO4 - , Cl- or NO3 - , respectively, thus the presence of the different anions is visible to the naked eye. The hetero-tetranuclear Cu2+ /Ca2+ /Ca2+ /Cu2+ complex is a versatile architecture to be used as scaffold for anion binding.
Collapse
Affiliation(s)
- Patrizia Rossi
- Department of Industrial Engineering, University of Florence, Via S. Marta 3, 50139, Florence, Italy
| | - Eleonora Macedi
- Department of Pure and Applied Sciences, University of Urbino "Carlo Bo", Via della Stazione 4, 61029, Urbino, Italy
| | - Mauro Formica
- Department of Pure and Applied Sciences, University of Urbino "Carlo Bo", Via della Stazione 4, 61029, Urbino, Italy
| | - Luca Giorgi
- Department of Pure and Applied Sciences, University of Urbino "Carlo Bo", Via della Stazione 4, 61029, Urbino, Italy
| | - Paola Paoli
- Department of Industrial Engineering, University of Florence, Via S. Marta 3, 50139, Florence, Italy
| | - Vieri Fusi
- Department of Pure and Applied Sciences, University of Urbino "Carlo Bo", Via della Stazione 4, 61029, Urbino, Italy
| |
Collapse
|
6
|
Macedi E, Paderni D, Formica M, Conti L, Fanelli M, Giorgi L, Amatori S, Ambrosi G, Valtancoli B, Fusi V. Playing with Structural Parameters: Synthesis and Characterization of Two New Maltol-Based Ligands with Binding and Antineoplastic Properties. Molecules 2020; 25:molecules25040943. [PMID: 32093219 PMCID: PMC7070877 DOI: 10.3390/molecules25040943] [Citation(s) in RCA: 5] [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: 01/22/2020] [Revised: 02/11/2020] [Accepted: 02/14/2020] [Indexed: 11/30/2022] Open
Abstract
Two maltol-based ligands, N,N′-bis((3-hydroxy-4-pyron-2-yl)methyl)-1,4-piperazine (L1) and N,N′,N′-tris((3-hydroxy-4-pyron-2-yl)methyl)-N-methylethylendiamine (L2), were synthesized and characterized. L1 and L2, containing, respectively, two and three maltol units spaced by a diamine fragment, were designed to evaluate how biological and binding features are affected by structural modifications of the parent compound malten. The acid-base behavior and the binding properties towards transition, alkaline-earth (AE) and rare-earth (RE) cations in aqueous solution, studied by potentiometric, UV-Vis and NMR analysis, are reported along with biological studies on DNA and leukemia cells. Both ligands form stable complexes with Cu(II), Zn(II) and Co(II) that were studied as metallo-receptors for AE and RE at neutral pH. L1 complexes are more affected than L2 ones by hard cations, the L1-Cu(II) system being deeply affected by RE. The structural modifications altered the mechanism of action: L1 partially maintains the ability to induce structural alterations of DNA, while L2 provokes single strand (nicks) and to a lesser extent double strand breaks of DNA.
Collapse
Affiliation(s)
- Eleonora Macedi
- Department of Pure and Applied Sciences, University of Urbino “Carlo Bo”, via della Stazione 4, 61029 Urbino, Italy; (D.P.); (M.F.); (L.G.); (G.A.)
- Correspondence: (E.M.); (V.F.); Tel.: +39-0722-305-905 (E.M.)
| | - Daniele Paderni
- Department of Pure and Applied Sciences, University of Urbino “Carlo Bo”, via della Stazione 4, 61029 Urbino, Italy; (D.P.); (M.F.); (L.G.); (G.A.)
| | - Mauro Formica
- Department of Pure and Applied Sciences, University of Urbino “Carlo Bo”, via della Stazione 4, 61029 Urbino, Italy; (D.P.); (M.F.); (L.G.); (G.A.)
| | - Luca Conti
- Department of Chemistry “Ugo Schiff”, University of Florence, via della Lastruccia 3-13, 50019 Sesto Fiorentino, Italy; (L.C.); (B.V.)
| | - Mirco Fanelli
- Department of Biomolecular Sciences, Molecular Pathology Laboratory “PaoLa”, University of Urbino “Carlo Bo”, via Arco d’Augusto 2, 61032 Fano, Italy; (M.F.); (S.A.)
| | - Luca Giorgi
- Department of Pure and Applied Sciences, University of Urbino “Carlo Bo”, via della Stazione 4, 61029 Urbino, Italy; (D.P.); (M.F.); (L.G.); (G.A.)
| | - Stefano Amatori
- Department of Biomolecular Sciences, Molecular Pathology Laboratory “PaoLa”, University of Urbino “Carlo Bo”, via Arco d’Augusto 2, 61032 Fano, Italy; (M.F.); (S.A.)
| | - Gianluca Ambrosi
- Department of Pure and Applied Sciences, University of Urbino “Carlo Bo”, via della Stazione 4, 61029 Urbino, Italy; (D.P.); (M.F.); (L.G.); (G.A.)
| | - Barbara Valtancoli
- Department of Chemistry “Ugo Schiff”, University of Florence, via della Lastruccia 3-13, 50019 Sesto Fiorentino, Italy; (L.C.); (B.V.)
| | - Vieri Fusi
- Department of Pure and Applied Sciences, University of Urbino “Carlo Bo”, via della Stazione 4, 61029 Urbino, Italy; (D.P.); (M.F.); (L.G.); (G.A.)
- Correspondence: (E.M.); (V.F.); Tel.: +39-0722-305-905 (E.M.)
| |
Collapse
|
7
|
Amatori S, Persico G, Paolicelli C, Hillje R, Sahnane N, Corini F, Furlan D, Luzi L, Minucci S, Giorgio M, Pelicci PG, Fanelli M. Epigenomic profiling of archived FFPE tissues by enhanced PAT-ChIP (EPAT-ChIP) technology. Clin Epigenetics 2018; 10:143. [PMID: 30446010 PMCID: PMC6240272 DOI: 10.1186/s13148-018-0576-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 10/29/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The introduction of pathology tissue-chromatin immunoprecipitation (PAT-ChIP), a technique allowing chromatin immunoprecipitation (ChIP) from formalin-fixed paraffin-embedded (FFPE) tissues, has extended the application of chromatin studies to clinical patient samples. However, extensive crosslinking introduced during routine tissue fixation of clinical specimens may hamper the application of PAT-ChIP to genome-wide studies (PAT-ChIP-Seq) from archived tissue samples. The reduced efficiency in chromatin extraction from over-fixed formalin archival samples is the main hurdle to overcome, especially when low abundant epigenetic marks (e.g., H3K4me3) are investigated. RESULTS We evaluated different modifications of the original PAT-ChIP protocol to improve chromatin isolation from FFPE tissues. With this aim, we first made extensive usage of a normal human colon specimen fixed at controlled conditions (24 h, 48 h, and 72 h) to mimic the variability of tissue fixation that is most frequently found in archived samples. Different conditions of chromatin extraction were tested applying either diverse sonication protocols or heat-mediated limited reversal of crosslinking (LRC). We found that, if compared with canonical PAT-ChIP protocol, LRC strongly increases chromatin extraction efficiency, especially when 72-h fixed FFPE samples are used. The new procedure, that we named enhanced PAT-ChIP (EPAT-ChIP), was then applied at genome-wide level using an archival sample of invasive breast carcinoma to investigate H3K4me3, a lowly abundant histone modification, and H3K27me3 and H3K27ac, two additional well-known histone marks. CONCLUSIONS EPAT-ChIP procedure improves the efficiency of chromatin isolation from FFPE samples allowing the study of long time-fixed specimens (72 h), as well as the investigation of low distributed epigenetic marks (e.g., H3K4me3) and the analysis of multiple histone marks from low amounts of starting material. We believe that EPAT-ChIP will facilitate the application of chromatin studies to archived pathology samples, thus contributing to extend the current understanding of cancer epigenomes and enabling the identification of clinically useful tumor biomarkers.
Collapse
Affiliation(s)
- Stefano Amatori
- Department of Biomolecular Sciences, Molecular Pathology Laboratory "PaoLa", University of Urbino "Carlo Bo", Via Arco d'Augusto 2, 61032, Fano, PU, Italy.,Department of Experimental Oncology, European Institute of Oncology, Via Adamello 16, 20139, Milan, Italy
| | - Giuseppe Persico
- Department of Biomolecular Sciences, Molecular Pathology Laboratory "PaoLa", University of Urbino "Carlo Bo", Via Arco d'Augusto 2, 61032, Fano, PU, Italy
| | - Claudio Paolicelli
- Department of Biomolecular Sciences, Molecular Pathology Laboratory "PaoLa", University of Urbino "Carlo Bo", Via Arco d'Augusto 2, 61032, Fano, PU, Italy
| | - Roman Hillje
- Department of Experimental Oncology, European Institute of Oncology, Via Adamello 16, 20139, Milan, Italy
| | - Nora Sahnane
- Unit of Pathology, Department of Medicine and Surgery, University of Insubria, Via O. Rossi 9, 21100, Varese, Italy
| | - Francesco Corini
- U.O.C. Anatomia Patologica, "C. G. Mazzoni" Hospital, Via degli Iris 2, 63100, Ascoli Piceno, Italy
| | - Daniela Furlan
- Unit of Pathology, Department of Medicine and Surgery, University of Insubria, Via O. Rossi 9, 21100, Varese, Italy
| | - Lucilla Luzi
- Department of Experimental Oncology, European Institute of Oncology, Via Adamello 16, 20139, Milan, Italy
| | - Saverio Minucci
- Department of Experimental Oncology, European Institute of Oncology, Via Adamello 16, 20139, Milan, Italy
| | - Marco Giorgio
- Department of Experimental Oncology, European Institute of Oncology, Via Adamello 16, 20139, Milan, Italy
| | - Pier Giuseppe Pelicci
- Department of Experimental Oncology, European Institute of Oncology, Via Adamello 16, 20139, Milan, Italy
| | - Mirco Fanelli
- Department of Biomolecular Sciences, Molecular Pathology Laboratory "PaoLa", University of Urbino "Carlo Bo", Via Arco d'Augusto 2, 61032, Fano, PU, Italy.
| |
Collapse
|
8
|
Rajamanikyam M, Gade S, Vadlapudi V, Parvathaneni SP, Koude D, Kumar Dommati A, Kumar Tiwari A, Misra S, Sripadi P, Amanchy R, Upadhyayula SM. Biophysical and biochemical characterization of active secondary metabolites from Aspergillus allahabadii. Process Biochem 2017. [DOI: 10.1016/j.procbio.2017.02.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
9
|
Clark AD, Oldenbroek M, Boyer TG. Mediator kinase module and human tumorigenesis. Crit Rev Biochem Mol Biol 2015; 50:393-426. [PMID: 26182352 DOI: 10.3109/10409238.2015.1064854] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Mediator is a conserved multi-subunit signal processor through which regulatory informatiosn conveyed by gene-specific transcription factors is transduced to RNA Polymerase II (Pol II). In humans, MED13, MED12, CDK8 and Cyclin C (CycC) comprise a four-subunit "kinase" module that exists in variable association with a 26-subunit Mediator core. Genetic and biochemical studies have established the Mediator kinase module as a major ingress of developmental and oncogenic signaling through Mediator, and much of its function in signal-dependent gene regulation derives from its resident CDK8 kinase activity. For example, CDK8-targeted substrate phosphorylation impacts transcription factor half-life, Pol II activity and chromatin chemistry and functional status. Recent structural and biochemical studies have revealed a precise network of physical and functional subunit interactions required for proper kinase module activity. Accordingly, pathologic change in this activity through altered expression or mutation of constituent kinase module subunits can have profound consequences for altered signaling and tumor formation. Herein, we review the structural organization, biological function and oncogenic potential of the Mediator kinase module. We focus principally on tumor-associated alterations in kinase module subunits for which mechanistic relationships as opposed to strictly correlative associations are established. These considerations point to an emerging picture of the Mediator kinase module as an oncogenic unit, one in which pathogenic activation/deactivation through component change drives tumor formation through perturbation of signal-dependent gene regulation. It follows that therapeutic strategies to combat CDK8-driven tumors will involve targeted modulation of CDK8 activity or pharmacologic manipulation of dysregulated CDK8-dependent signaling pathways.
Collapse
Affiliation(s)
- Alison D Clark
- a Department of Molecular Medicine , Institute of Biotechnology, University of Texas Health Science Center at San Antonio , San Antonio , TX , USA
| | - Marieke Oldenbroek
- a Department of Molecular Medicine , Institute of Biotechnology, University of Texas Health Science Center at San Antonio , San Antonio , TX , USA
| | - Thomas G Boyer
- a Department of Molecular Medicine , Institute of Biotechnology, University of Texas Health Science Center at San Antonio , San Antonio , TX , USA
| |
Collapse
|
10
|
Maugg D, Rothenaigner I, Schorpp K, Potukuchi HK, Korsching E, Baumhoer D, Hadian K, Smida J, Nathrath M. New small molecules targeting apoptosis and cell viability in osteosarcoma. PLoS One 2015; 10:e0129058. [PMID: 26039064 PMCID: PMC4454490 DOI: 10.1371/journal.pone.0129058] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2014] [Accepted: 05/04/2015] [Indexed: 01/20/2023] Open
Abstract
Despite the option of multimodal therapy in the treatment strategies of osteosarcoma (OS), the most common primary malignant bone tumor, the standard therapy has not changed over the last decades and still involves multidrug chemotherapy and radical surgery. Although successfully applied in many patients a large number of patients eventually develop recurrent or metastatic disease in which current therapeutic regimens often lack efficacy. Thus, new therapeutic strategies are urgently needed. In this study, we performed a phenotypic high-throughput screening campaign using a 25,000 small-molecule diversity library to identify new small molecules selectively targeting osteosarcoma cells. We could identify two new small molecules that specifically reduced cell viability in OS cell lines U2OS and HOS, but affected neither hepatocellular carcinoma cell line (HepG2) nor primary human osteoblasts (hOB). In addition, the two compounds induced caspase 3 and 7 activity in the U2OS cell line. Compared to conventional drugs generally used in OS treatment such as doxorubicin, we indeed observed a greater sensitivity of OS cell viability to the newly identified compounds compared to doxorubicin and staurosporine. The p53-negative OS cell line Saos-2 almost completely lacked sensitivity to compound treatment that could indicate a role of p53 in the drug response. Taken together, our data show potential implications for designing more efficient therapies in OS.
Collapse
Affiliation(s)
- Doris Maugg
- Clinical Cooperation Group Osteosarcoma, Institute of Radiation Biology, Helmholtz Zentrum München—National Research Centre for Environmental Health, Neuherberg, Germany
- Department of Pediatrics and Children´s Cancer Research Center, Technische Universität München, Munich, Germany
- * E-mail:
| | - Ina Rothenaigner
- Assay Development and Screening Platform, Institute for Molecular Toxicology and Pharmacology, Helmholtz Zentrum München—National Research Centre for Environmental Health, Neuherberg, Germany
| | - Kenji Schorpp
- Assay Development and Screening Platform, Institute for Molecular Toxicology and Pharmacology, Helmholtz Zentrum München—National Research Centre for Environmental Health, Neuherberg, Germany
| | - Harish Kumar Potukuchi
- Lehrstuhl für Organische Chemie I and Catalysis Research Center (CRC), Technische Universität München, Garching, Germany
- Institute of Structural Biology, Helmholtz Zentrum München—National Research Centre for Environmental Health, Neuherberg, Germany
| | | | - Daniel Baumhoer
- Clinical Cooperation Group Osteosarcoma, Institute of Radiation Biology, Helmholtz Zentrum München—National Research Centre for Environmental Health, Neuherberg, Germany
- Bone Tumor Reference Center at the Institute of Pathology, University Hospital Basel, Basel, Switzerland
| | - Kamyar Hadian
- Assay Development and Screening Platform, Institute for Molecular Toxicology and Pharmacology, Helmholtz Zentrum München—National Research Centre for Environmental Health, Neuherberg, Germany
| | - Jan Smida
- Clinical Cooperation Group Osteosarcoma, Institute of Radiation Biology, Helmholtz Zentrum München—National Research Centre for Environmental Health, Neuherberg, Germany
- Department of Pediatrics and Children´s Cancer Research Center, Technische Universität München, Munich, Germany
| | - Michaela Nathrath
- Clinical Cooperation Group Osteosarcoma, Institute of Radiation Biology, Helmholtz Zentrum München—National Research Centre for Environmental Health, Neuherberg, Germany
- Department of Pediatrics and Children´s Cancer Research Center, Technische Universität München, Munich, Germany
- Department of Pediatric Oncology, Klinikum Kassel, Kassel, Germany
| |
Collapse
|
11
|
Amatori S, Ambrosi G, Fanelli M, Formica M, Fusi V, Giorgi L, Macedi E, Micheloni M, Paoli P, Rossi P. A preorganized metalloreceptor for alkaline earth ions showing calcium versus magnesium selectivity in water: biological activity of selected metal complexes. Chemistry 2014; 20:11048-57. [PMID: 25069710 DOI: 10.1002/chem.201403084] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Indexed: 11/10/2022]
Abstract
The N,N'-bis[(3-hydroxy-4-pyron-2-yl)methyl]-N,N'-dimethylethylendiamine (Malten = L) forms the highly stable [CuH(-2)L] species in water, in which the converging maltol oxygen atoms form an electron-rich area able to host hard metal ions. When considering the alkaline earth series (AE), the [Cu(H(-2)L)] species binds all metal ions, with the exception of Mg(2+), exhibiting the relevant property to discriminate Ca(2+) versus Mg(2+) at physiological pH 7.4; the binding of the AE metal is visible to the naked eye. The stability constant values of the trinuclear [AE{Cu(H(-2)L)}2](2+) species formed reach the maximum for Ca(2+) (log K=7.7). Ca(2+) also forms a tetranuclear [Ca{Cu(H(-2)L)}]2(4+) species at a high Ca(2+) concentration. Tri- and tetranuclear calcium complexes show blue- and pink-colored crystals, respectively. [Cu(H(-2)L)] is the most active species in inducing DNA alterations. The DNA damages are compatible with its hydrolytic cleavages.
Collapse
Affiliation(s)
- Stefano Amatori
- Molecular Pathology Laboratory "PaoLa", Department of Biomolecular Sciences, University of Urbino, Arco d'Augusto 2, I-61032 Fano (PU) (Italy)
| | | | | | | | | | | | | | | | | | | |
Collapse
|
12
|
Poloni A, Maurizi G, Mattiucci D, Amatori S, Fogliardi B, Costantini B, Mariani M, Mancini S, Olivieri A, Fanelli M, Leoni P. Overexpression of CDKN2B (p15INK4B) and altered global DNA methylation status in mesenchymal stem cells of high-risk myelodysplastic syndromes. Leukemia 2014; 28:2241-4. [DOI: 10.1038/leu.2014.197] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|