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De Castro F, Ciardullo G, Fanizzi FP, Prejanò M, Benedetti M, Marino T. Incorporation of N7-Platinated Guanines into Thermus Aquaticus (Taq) DNA Polymerase: Atomistic Insights from Molecular Dynamics Simulations. Int J Mol Sci 2023; 24:9849. [PMID: 37372996 DOI: 10.3390/ijms24129849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 06/03/2023] [Accepted: 06/05/2023] [Indexed: 06/29/2023] Open
Abstract
In this work, we elucidated some key aspects of the mechanism of action of the cisplatin anticancer drug, cis-[Pt(NH3)2Cl2], involving direct interactions with free nucleotides. A comprehensive in silico molecular modeling analysis was conducted to compare the interactions of Thermus aquaticus (Taq) DNA polymerase with three distinct N7-platinated deoxyguanosine triphosphates: [Pt(dien)(N7-dGTP)] (1), cis-[Pt(NH3)2Cl(N7-dGTP)] (2), and cis-[Pt(NH3)2(H2O)(N7-dGTP)] (3) {dien = diethylenetriamine; dGTP = 5'-(2'-deoxy)-guanosine-triphosphate}, using canonical dGTP as a reference, in the presence of DNA. The goal was to elucidate the binding site interactions between Taq DNA polymerase and the tested nucleotide derivatives, providing valuable atomistic insights. Unbiased molecular dynamics simulations (200 ns for each complex) with explicit water molecules were performed on the four ternary complexes, yielding significant findings that contribute to a better understanding of experimental results. The molecular modeling highlighted the crucial role of a specific α-helix (O-helix) within the fingers subdomain, which facilitates the proper geometry for functional contacts between the incoming nucleotide and the DNA template needed for incorporation into the polymerase. The analysis revealed that complex 1 exhibits a much lower affinity for Taq DNA polymerase than complexes 2-3. The affinities of cisplatin metabolites 2-3 for Taq DNA polymerase were found to be quite similar to those of natural dGTP, resulting in a lower incorporation rate for complex 1 compared to complexes 2-3. These findings could have significant implications for the cisplatin mechanism of action, as the high intracellular availability of free nucleobases might promote the competitive incorporation of platinated nucleotides over direct cisplatin attachment to DNA. The study's insights into the incorporation of platinated nucleotides into the Taq DNA polymerase active site suggest that the role of platinated nucleotides in the cisplatin mechanism of action may have been previously underestimated.
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Affiliation(s)
- Federica De Castro
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Prov.le Lecce-Monteroni, Centro Ecotekne, I-73100 Lecce, Italy
| | - Giada Ciardullo
- Dipartimento di Chimica e Tecnologie Chimiche, Laboratorio PROMOCS cubo 14C, Università della Calabria, I-87036 Rende, Italy
| | - Francesco Paolo Fanizzi
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Prov.le Lecce-Monteroni, Centro Ecotekne, I-73100 Lecce, Italy
| | - Mario Prejanò
- Dipartimento di Chimica e Tecnologie Chimiche, Laboratorio PROMOCS cubo 14C, Università della Calabria, I-87036 Rende, Italy
| | - Michele Benedetti
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Prov.le Lecce-Monteroni, Centro Ecotekne, I-73100 Lecce, Italy
| | - Tiziana Marino
- Dipartimento di Chimica e Tecnologie Chimiche, Laboratorio PROMOCS cubo 14C, Università della Calabria, I-87036 Rende, Italy
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Stefàno E, De Castro F, De Luca E, Muscella A, Marsigliante S, Benedetti M, Fanizzi FP. Synthesis and Comparative Evaluation of the Cytotoxic Activity of Cationic Organometallic Complexes of the Type [Pt(η1-CH2-CH2-OR)(DMSO)(phen)]+ (R = Me, Et, Pr, Bu). Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.121321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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3
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Stefàno E, Muscella A, Benedetti M, De Castro F, Fanizzi FP, Marsigliante S. Antitumor and antimigration effects of a new Pt compound on neuroblastoma cells. Biochem Pharmacol 2022; 202:115124. [PMID: 35688179 DOI: 10.1016/j.bcp.2022.115124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 05/19/2022] [Accepted: 06/03/2022] [Indexed: 11/30/2022]
Abstract
Among the new Pt complexes with anticancer properties, phenanthroline derivatives have aroused great interest due to their different mode of action compared to cisplatin. We previously examined cytotoxic effects of a new Pt(II)-complex containing 1,10-phenantroline (phen), [Pt(η1-C2H4OMe)(DMSO)(phen)]Cl, in a panel of eight human cancer cell lines, and showed that it exerted the greatest cytotoxic effect in the neuroblastoma SH-SY5Y cell line. In this study, the antiproliferative and antimetastatic potential of [Pt(η1-C2H4OMe)(DMSO)(phen)]+ (in short Pt-EtOMeSOphen) was investigated in neuroblastoma SH-SY5Y, SK-N-SH and SK-N-BE(2) cells. Pt-EtOMeSOphen provoked the early signs of apoptosis induction (cleavage of PARP and activation of caspases-9 and -7); it also increased the level of proapoptotic Bax protein whereas it decreased the level of the antiapoptotic Bcl-2 protein. The effects of Pt-EtOMeSOphen on migration and invasion processes were also evaluated. A decrease of cell migration/invasion by Pt-EtOMeSOphen was observed through 2D and 3D in vitro assays. Pt-EtOMeSOphen was found to exert its actions by decreasing MMP-9 and MMP-2 expressions and activities. Pt-EtOMeSOphen provoked the phosphorylation of both ERK1/2 and p38 MAPKs. All the effects of Pt-EtOMeSOphen on SH-SY5Y cell vitality, migration and metalloproteases activities described here were due to the activation of p38 MAPK since pharmacological p38 MAPK inhibition or small interfering RNAs to p38 MAPK mRNA blocked such effects. Results suggest that Pt-EtOMeSOphen inhibits neuroblastoma cancer cells survival, motility, and invasion. This could lead to the reduction of neuroblastoma metastatic potential.
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Affiliation(s)
- Erika Stefàno
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Prov.le Lecce-Monteroni, Centro Ecotekne, 73100 Lecce, Italy
| | - Antonella Muscella
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Prov.le Lecce-Monteroni, Centro Ecotekne, 73100 Lecce, Italy.
| | - Michele Benedetti
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Prov.le Lecce-Monteroni, Centro Ecotekne, 73100 Lecce, Italy.
| | - Federica De Castro
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Prov.le Lecce-Monteroni, Centro Ecotekne, 73100 Lecce, Italy
| | - Francesco Paolo Fanizzi
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Prov.le Lecce-Monteroni, Centro Ecotekne, 73100 Lecce, Italy
| | - Santo Marsigliante
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Prov.le Lecce-Monteroni, Centro Ecotekne, 73100 Lecce, Italy
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4
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De Castro F, Stefàno E, Migoni D, Iaconisi GN, Muscella A, Marsigliante S, Benedetti M, Fanizzi FP. Synthesis and Evaluation of the Cytotoxic Activity of Water-Soluble Cationic Organometallic Complexes of the Type [Pt(η 1-C 2H 4OMe)(L)(Phen)] + (L = NH 3, DMSO; Phen = 1,10-Phenanthroline). Pharmaceutics 2021; 13:642. [PMID: 33946459 PMCID: PMC8147149 DOI: 10.3390/pharmaceutics13050642] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/26/2021] [Accepted: 04/27/2021] [Indexed: 02/04/2023] Open
Abstract
Starting from the [PtCl(η1-C2H4OMe)(phen)] (phen = 1,10-phenanthroline, 1) platinum(II) precursor, we synthesized and characterized by multinuclear NMR new [Pt(η1-C2H4OMe)(L)(phen)]+ (L = NH3, 2; DMSO, 3) complexes. These organometallic species, potentially able to interact with cell membrane organic cation transporters (OCT), violating some of the classical rules for antitumor activity of cisplatin analogues, were evaluated for their cytotoxicity. Interestingly, despite both complexes 2 and 3 resulting in greater cell uptake than cisplatin in selected tumor cell lines, only 3 showed comparable or higher antitumor activity. General low cytotoxicity of complex 2 in the tested cell lines (SH-SY5Y, SK-OV-3, Hep-G2, Caco-2, HeLa, MCF-7, MG-63, ZL-65) appeared to depend on its stability towards solvolysis in neutral water, as assessed by NMR monitoring. Differently, the [Pt(η1-C2H4OMe)(DMSO)(phen)]+ (3) complex was easily hydrolyzed in neutral water, resulting in a comparable or higher cytotoxicity in cancer cells with respect to cisplatin. Further, both IC50 values and the uptake profiles of the active complex appeared quite different in the used cell lines, suggesting the occurrence of diversified biological effects. Nevertheless, further studies on the metabolism of complex 3 should be performed before planning its possible use in tissue- and tumor-specific drug design.
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Affiliation(s)
| | | | | | | | | | | | - Michele Benedetti
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Prov.le Lecce-Monteroni, Centro Ecotekne, 73100 Lecce, Italy; (F.D.C.); (E.S.); (D.M.); (G.N.I.); (A.M.); (S.M.); (F.P.F.)
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Benedetti M, De Castro F, Lamacchia V, Pacifico C, Natile G, Fanizzi FP. Insertion of terminal alkyne into Pt-N bond of the square planar [PtI 2(Me 2phen)] complex. Dalton Trans 2017; 46:15819-15826. [PMID: 29099524 DOI: 10.1039/c7dt03644b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reactivity of [PtX2(Me2phen)] complexes (X = Cl, Br, I; Me2phen = 2,9-dimethyl-1,10-phenanthroline) with terminal alkynes has been investigated. Although the dichlorido species [PtCl2(Me2phen)] exhibits negligible reactivity, the bromido and iodido derivatives lead in short time to the formation of five-coordinate Pt(ii) complexes of the type [PtX2(Me2phen)(η2-CH[triple bond, length as m-dash]CR)] (X = Br, I; R = Ph, n-Bu), in equilibrium with the starting reagents. Similar to analogous complexes with simple acetylene, the five coordinate species can also undergo dissociation of an halido ligand and formation of the transient square-planar cationic species [PtX(Me2phen)(η2-CH[triple bond, length as m-dash]CR)]+. This latter can further evolve to give an unusual, sparingly soluble square planar product where the former terminal alkyne is converted into a :C[double bond, length as m-dash]C(H)(R) moiety with the α-carbon bridging the Pt(ii) core with one of the two N-donors of coordinated Me2phen. The final product [PtX2{κ2-N,C-(Z)-N[combining low line]1-N10-C[combining low line][double bond, length as m-dash]C(H)(R)}] (N1-N10 = 2,9-dimethyl-1,10-phenanthroline; X = Br, I) contains a Pt-N-C-C-N-C six-membered chelate ring in a square planar Pt(ii) coordination environment.
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Affiliation(s)
- Michele Benedetti
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Via Monteroni, I-73100 Lecce, Italy.
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Gemili M, Sari H, Ulger M, Sahin E, Nural Y. Pt(II) and Ni(II) complexes of octahydropyrrolo[3,4-c]pyrrole N -benzoylthiourea derivatives: Synthesis, characterization, physical parameters and biological activity. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2017.04.026] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Benedetti M, De Castro F, Fanizzi FP. 73Ge, 119Sn and 207Pb: general cooperative effects of single atom ligands on the NMR signals observed in tetrahedral [MX nY 4-n] (M = Ge, Sn, Pb; 1 ≤ n ≤ 4; X, Y = Cl, Br, I) coordination compounds of heavier XIV group elements. Dalton Trans 2017; 46:2855-2860. [PMID: 28181618 DOI: 10.1039/c7dt00307b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An inverse linear relationship between 73Ge, 119Sn and 207Pb NMR chemical shifts and the overall sum of ionic radii of coordinated halido ligands has been discovered in tetrahedral [MXnY4-n] (M = Ge, Sn, Pb; 1 ≤ n ≤ 4; X, Y = Cl, Br, I) coordination compounds. This finding is consistent with a previously reported correlation found in octahedral, pentacoordinate and square planar platinum complexes. The effect of the coordinated halido ligands acting on the metal as shielding conducting rings is therefore confirmed also by 73Ge, 119Sn and 207Pb NMR spectroscopy.
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Affiliation(s)
- M Benedetti
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Via Monteroni, I-73100 Lecce, Italy.
| | - F De Castro
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Via Monteroni, I-73100 Lecce, Italy.
| | - F P Fanizzi
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Via Monteroni, I-73100 Lecce, Italy.
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9
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Benedetti M, De Castro F, Fanizzi FP. Square-Planar PtIIversus Octahedral PtIVHalido Complexes:195Pt NMR Explained by a Simple Empirical Approach. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600573] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Michele Benedetti
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali; Università del Salento; Via Monteroni 73100 Lecce Italy
| | - Federica De Castro
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali; Università del Salento; Via Monteroni 73100 Lecce Italy
| | - Francesco P. Fanizzi
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali; Università del Salento; Via Monteroni 73100 Lecce Italy
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10
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Benedetti M, Romano A, De Castro F, Girelli CR, Antonucci D, Migoni D, Verri T, Fanizzi FP. N7-platinated ribonucleotides are not incorporated by RNA polymerases. New perspectives for a rational design of platinum antitumor drugs. J Inorg Biochem 2016; 163:143-146. [PMID: 27421694 DOI: 10.1016/j.jinorgbio.2016.07.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Revised: 06/24/2016] [Accepted: 07/07/2016] [Indexed: 12/31/2022]
Abstract
In this work, we assessed the capacity of RNA polymerases to use platinated ribonucleotides as substrates for RNA synthesis by testing the incorporation of the model compound [Pt(dien)(N7-5'-GTP)] (dien=diethylenetriamine; GTP=5'-guanosine triphosphate) into a natural RNA sequence. The yield of in vitro transcription operated by T7 RNA polymerase, on the LacZ (Escherichia coli gene encoding for β-galactosidase) sequence, decreases progressively with decreasing the concentration of natural GTP, in favor of the platinated nucleotide, [Pt(dien)(N7-5'-GTP)]. Comparison of the T7 RNA polymerase transcription activities for [Pt(dien)(N7-5'-GTP)] compound incorporation reaction test, with respect to the effect of a decreasing concentration of natural GTP, showed no major differences. A specific inhibitory effect of compound [Pt(dien)(N7-5'-GTP)] (which may pair the complementary base on the DNA strand, without being incorporated in the RNA by the T7 RNA polymerase) was evidenced. Our findings therefore suggest that RNA polymerases, unlike DNA polymerases, are unable to incorporate N7-platinated nucleotides into newly synthesized nucleic acids. In this respect, specifically designed N7-platinated nucleotides based compounds could be used in alternative to the classical platinum based drugs. This approach may offer a possible strategy to target specifically DNA, without affecting RNA, and is potentially able to better modulate pharmacological activity.
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Affiliation(s)
- Michele Benedetti
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Via Monteroni, I-73100 Lecce, Italy.
| | - Alessandro Romano
- Neuropathology Unit, Institute of Experimental Neurology and Division of Neuroscience, IRCCS San Raffaele Scientific Institute, via Olgettina 60, 20132 Milan, Italy
| | - Federica De Castro
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Via Monteroni, I-73100 Lecce, Italy
| | - Chiara R Girelli
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Via Monteroni, I-73100 Lecce, Italy
| | - Daniela Antonucci
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Via Monteroni, I-73100 Lecce, Italy
| | - Danilo Migoni
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Via Monteroni, I-73100 Lecce, Italy
| | - Tiziano Verri
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Via Monteroni, I-73100 Lecce, Italy
| | - Francesco P Fanizzi
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Via Monteroni, I-73100 Lecce, Italy.
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Benedetti M, De Castro F, Romano A, Migoni D, Piccinni B, Verri T, Lelli M, Roveri N, Fanizzi FP. Adsorption of the cis-[Pt(NH3)2(P2O7)]2− (phosphaplatin) on hydroxyapatite nanocrystals as a smart way to selectively release activated cis-[Pt(NH3)2Cl2] (cisplatin) in tumor tissues. J Inorg Biochem 2016; 157:73-9. [DOI: 10.1016/j.jinorgbio.2016.01.019] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Revised: 12/22/2015] [Accepted: 01/18/2016] [Indexed: 01/02/2023]
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12
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Benedetti M, Lamacchia V, Antonucci D, Papadia P, Pacifico C, Natile G, Fanizzi FP. Insertion of alkynes into Pt-X bonds of square planar [PtX2(N^N)] (X = Cl, Br, I) complexes. Dalton Trans 2015; 43:8826-34. [PMID: 24782043 DOI: 10.1039/c4dt00679h] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The reactivity with acetylene of [PtX2(Me2phen)] (X = Cl, Br, I) complexes has been investigated. Whereas the chlorido species [PtCl2(Me2phen)] exhibits negligible reactivity at short reaction times, the bromido and iodido species [PtBr2(Me2phen)] and [PtI2(Me2phen)] lead initially to formation of Pt(II) five-coordinate complexes, [PtX2(η(2)-CH≡CH)(Me2phen)], that evolve to four-coordinate alkenyl complexes of the type [PtX(η(1)-E-CH=CHX)(Me2phen)]. The alkenyl complexes, in the presence of excess acetylene, establish an equilibrium with the five-coordinate alkyne-alkenyl species [PtX(η(1)-E-CH=CHX)(η(2)-CH≡CH)(Me2phen)] (X = Br, I). The π-bonded acetylene can be exchanged with free olefins or C≡O, affording the new alkene-alkenyl or carbonyl-alkenyl complexes [PtX(η(1)-E-CH=CHX)(η(2)-olefin)(Me2phen)] and [PtX(η(1)-E-CH=CHX)(C≡O)(Me2phen)]. The five-coordinate geometry of the alkyne-alkenyl and alkene-alkenyl complexes was assessed from NMR data and is fully consistent with that of a previously determined X-ray structure of [PtBr(η(1)-E-CH[double bond, length as m-dash]CHBr)(η(2)-CH2=CH2)(Me2phen)].
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Affiliation(s)
- Michele Benedetti
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Via Monteroni, I-73100 Lecce, Italy.
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13
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Benedetti M, Antonucci D, De Castro F, Girelli CR, Lelli M, Roveri N, Fanizzi FP. Metalated nucleotide chemisorption on hydroxyapatite. J Inorg Biochem 2015; 153:279-283. [PMID: 26050880 DOI: 10.1016/j.jinorgbio.2015.04.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Revised: 04/07/2015] [Accepted: 04/09/2015] [Indexed: 12/16/2022]
Abstract
The experiments here reported evidence on the importance of the residual charge of a nucleotide derivative, for the adsorption on nHAP (hydroxyapatite nanocrystals), in water solution. We found that the simple presence of phosphates on the nucleotide derivative does not guarantee adsorption on nHAP. On the other hand, we demonstrated that a cationic or neutral charge on a nucleotide derivative produces a strongly reduced chemical adsorption (chemisorption) whereas, in the presence of a net negative charge, relevant adsorption on nHAP is observed. The number of phosphates can only modulate the adsorption efficiency of a molecule provided that this latter bears an overall negative charge. The neutral zwitterionic nucleotide Pt(II) complexes, bearing negatively charged phosphates, are unable to give stable chemisorption. Previous considerations are important to model the binding ability of phosphate bearing nucleotide derivatives or molecules on hydroxyapatite. The findings reported in the present paper could be relevant in bone tissue targeting or nHAP mediated drug delivery.
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Affiliation(s)
- Michele Benedetti
- University of Salento, Department of Biological and Environmental Sciences and Technologies, Via Monteroni, 73100, Lecce, Italy.
| | - Daniela Antonucci
- University of Salento, Department of Biological and Environmental Sciences and Technologies, Via Monteroni, 73100, Lecce, Italy
| | - Federica De Castro
- University of Salento, Department of Biological and Environmental Sciences and Technologies, Via Monteroni, 73100, Lecce, Italy
| | - Chiara R Girelli
- University of Salento, Department of Biological and Environmental Sciences and Technologies, Via Monteroni, 73100, Lecce, Italy
| | - Marco Lelli
- University of Bologna, Department of Chemistry "G. Ciamician", Via Selmi 2, 40126, Bologna Italy
| | - Norberto Roveri
- University of Bologna, Department of Chemistry "G. Ciamician", Via Selmi 2, 40126, Bologna Italy
| | - Francesco P Fanizzi
- University of Salento, Department of Biological and Environmental Sciences and Technologies, Via Monteroni, 73100, Lecce, Italy.
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Benedetti M, Antonucci D, Girelli CR, Fanizzi FP. Hindrance, Donor Ability of Me
n
∩
NN
Chelates and Overall Stability of Pentacoordinate [PtCl
2
(η
2
‐CH
2
=CH
2
)(Me
n
∩
NN
)] Complexes as Observed by η
2
‐Olefin
1
J
Pt,C
Modulation: An NMR Study. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500103] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Michele Benedetti
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, via Monteroni, 73100 Lecce, Italy, http://www.unisalento.it/web/guest/home_page
| | - Daniela Antonucci
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, via Monteroni, 73100 Lecce, Italy, http://www.unisalento.it/web/guest/home_page
| | - Chiara R. Girelli
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, via Monteroni, 73100 Lecce, Italy, http://www.unisalento.it/web/guest/home_page
| | - Francesco P. Fanizzi
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, via Monteroni, 73100 Lecce, Italy, http://www.unisalento.it/web/guest/home_page
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X-ray structures versus NMR signals in pentacoordinate [PtX2(η2-CH2CH2)(Me2phen)] (X=Cl, Br, I) complexes. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2015.01.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Benedetti M, de Castro F, Antonucci D, Papadia P, Fanizzi FP. General cooperative effects of single atom ligands on a metal: a195Pt NMR chemical shift as a function of coordinated halido ligands’ ionic radii overall sum. Dalton Trans 2015; 44:15377-81. [DOI: 10.1039/c5dt02285a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An inverse linear relationship between the experimentally observed195Pt NMR signals and the overall sum of coordinated halido X ligands’ ionic radii was discovered in Pt(ii) and Pt(iv) complexes.
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Affiliation(s)
- M. Benedetti
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali
- Università del Salento
- I-73100 Lecce
- Italy
| | - F. de Castro
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali
- Università del Salento
- I-73100 Lecce
- Italy
| | - D. Antonucci
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali
- Università del Salento
- I-73100 Lecce
- Italy
| | - P. Papadia
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali
- Università del Salento
- I-73100 Lecce
- Italy
| | - F. P. Fanizzi
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali
- Università del Salento
- I-73100 Lecce
- Italy
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Lüning A, Neugebauer M, Lingen V, Krest A, Stirnat K, Deacon GB, Drago PR, Ott I, Schur J, Pantenburg I, Meyer G, Klein A. Platinum Diolefin Complexes - Synthesis, Structures, and Cytotoxicity. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402954] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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18
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Benedetti M, Girelli CR, Antonucci D, Fanizzi FP. [PtCl(η1-CH2–CH2OR)(NˆN)] and [PtCl(η2-CH2CH2)(NˆN)]+, NˆN = dinitrogen ligand, complexes. Sterical and electronic effects evidenced by NMR analysis. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2014.05.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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19
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New method for the synthesis of [PtCl{η1-CH2C(O)R}(N-N)] ketonyl derivatives starting from the Zeise’s salt. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2013.12.044] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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20
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Benedetti M, Barone CR, Girelli CR, Fanizzi FP, Natile G, Maresca L. H/D exchange at sp3 carbons in the coordination sphere of platinum(ii). Dalton Trans 2014; 43:3669-75. [DOI: 10.1039/c3dt53216j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Michele Benedetti
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Via Monteroni, I-73100 Lecce, Italy.
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Benedetti M, Antonucci D, Girelli CR, Capitelli F, Fanizzi FP. Reactivity of [PtCl(η2-C2H4)(N-N)]+, N-N=diimine ligand, with phenol derivatives and first comparison between single crystal X-ray structures of syn- and anti-[Pt(N-N)(phenolate)2] rotamers in the solid state. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2013.09.020] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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22
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Carrisi C, Antonucci D, Lunetti P, Migoni D, Girelli CR, Dolce V, Fanizzi FP, Benedetti M, Capobianco L. Transport of platinum bonded nucleotides into proteoliposomes, mediated by Drosophila melanogaster thiamine pyrophosphate carrier protein (DmTpc1). J Inorg Biochem 2013; 130:28-31. [PMID: 24148759 DOI: 10.1016/j.jinorgbio.2013.09.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Revised: 09/13/2013] [Accepted: 09/18/2013] [Indexed: 11/30/2022]
Abstract
The results of the present study suggest that DmTpc1 is actively implicated in the specific uptake of free cytoplasmic Pt bonded nucleotides, and therefore could be linked to the mechanism of action of some platinum-based antitumor drugs. Although DmTpc1 has a low affinity for model [Pt(dien)(N7-5'-dGTP)] and cis-[Pt(NH3)2(py)(N7-5'-dGTP)] compared to dATP it's well known that DNA platination level of few metal atoms per double-stranded molecule may account for the pharmacological activity of platinum based antitumor drugs. This is the first investigation where it has been demonstrated that a mitochondrial carrier is directly involved in the transport of metalated purines related with the cisplatin mechanism of action. Moreover it is shown as a lower hindrance of nucleotide bonded platinum complexes could strongly enhance mitochondrial uptake. Furthermore, a new application of ICP-AES addressed to measure the transport of metalated nucleobases, by using a recombinant protein reconstituted into liposomes, has been here, for the first time, developed and compared with a standard technique such as the liquid scintillation counting.
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Affiliation(s)
- Chiara Carrisi
- Department of Biological and Environmental Sciences and Technologies, University of Salento, 73100 Lecce, Italy; IFOM Foundation, FIRC Institute of Molecular Oncology Foundation, IFOM-IEO Campus, 20139 Milan, Italy
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23
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Liu W, Ye Q, Jiang J, Lou L, Xu Y, Xie C, Xie M. cis
‐[Pt
II
(1
R
,2
R
‐DACH)(3‐acetoxy‐1,1‐cyclobutanedicarboxylato)], a Water‐Soluble, Oxalate‐Free and Stable Analogue of Oxaliplatin: Synthesis, Characterization, and Biological Evaluations. ChemMedChem 2013; 8:1465-7. [DOI: 10.1002/cmdc.201300249] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2013] [Indexed: 11/09/2022]
Affiliation(s)
- Weiping Liu
- State Key Lab for Platinum Group Metals, Kunming Institute of Precious Metals, 650106 Yunnan (China)
| | - Qingsong Ye
- State Key Lab for Platinum Group Metals, Kunming Institute of Precious Metals, 650106 Yunnan (China)
| | - Jing Jiang
- State Key Lab for Platinum Group Metals, Kunming Institute of Precious Metals, 650106 Yunnan (China)
| | - Liguang Lou
- Shanghai Institute of Materia Medica, Chinese Academy of Science, 201203 Shanghai (China)
| | - Yongping Xu
- Shanghai Institute of Materia Medica, Chinese Academy of Science, 201203 Shanghai (China)
| | - Chengying Xie
- Shanghai Institute of Materia Medica, Chinese Academy of Science, 201203 Shanghai (China)
| | - Mingjin Xie
- Department of Chemistry, Yunnan University, 650091 Yunnan (China)
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Synthesis, Characterization, and Interaction with Biomolecules of Platinum(II) Complexes with Shikimic Acid-Based Ligands. Bioinorg Chem Appl 2013; 2013:565032. [PMID: 23533373 PMCID: PMC3603162 DOI: 10.1155/2013/565032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Accepted: 01/03/2013] [Indexed: 12/11/2022] Open
Abstract
Starting from the active ingredient shikimic acid (SA) of traditional Chinese medicine and NH2(CH2)nOH, (n = 2–6), we have synthesized a series of new water-soluble Pt(II) complexes PtLa–eCl2, where La–e are chelating diamine ligands with carbon chain covalently attached to SA (La–e = SA-NH(CH2)nNHCH2CH2NH2; La, n = 2; Lb, n = 3; Lc, n = 4; Ld, n = 5; Le, n = 6). The results of the elemental analysis, LC-MS, capillary electrophoresis, and 1H, 13C NMR indicated that there was only one product (isomer) formed under the present experimental conditions, in which the coordinate mode of PtLa–eCl2 was two-amine bidentate. Their in vitro cytotoxic activities were evaluated by MTT method, where these compounds only exhibited low cytotoxicity towards BEL7404, which should correlate their low lipophilicity. The interactions of the five Pt(II) complexes with DNA were investigated by agarose gel electrophoresis, which suggests that the Pt(II) complexes could induce DNA alteration. We also studied the interactions of the Pt(II) complexes with 5′-GMP with ESI-MS and 1H NMR and found that PtLbCl2, PtLcCl2, and PtLdCl2 could react with 5′-GMP to form mono-GMP and bis-GMP adducts. Furthermore, the cell-cycle analysis revealed that PtLbCl2, PtLcCl2 cause cell G2-phase arrest after incubation for 72 h. Overall, these water-soluble Pt(II) complexes interact with DNA mainly through covalent binding, which blocks the DNA synthesis and replication and thus induces cytotoxicity that weakens as the length of carbon chain increases.
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Benedetti M, Antonucci D, De Pascali SA, Ciccarella G, Fanizzi FP. Alkyl-vinyl-ethers from alcoholic substrates and the Zeise’s salt, via square planar [PtCl(N–N)(η1-CH2CH2OR)] complexes. J Organomet Chem 2012. [DOI: 10.1016/j.jorganchem.2012.04.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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26
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Benedetti M, Antonucci D, De Pascali SA, Girelli CR, Fanizzi FP. Pentacoordinate [PtCl2(η2-C2H4)(N–N′)] complexes with asymmetrically hindered nitrogen donor chelates. Stereospecific synthesis of syn- and anti-[PtCl(η1-CH2CH2OMe)(Mebpy)]. J Organomet Chem 2012. [DOI: 10.1016/j.jorganchem.2012.02.026] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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27
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Benedetti M, Barone CR, Antonucci D, Vecchio VM, Ienco A, Maresca L, Natile G, Fanizzi FP. Modulation of properties in analogues of Zeise's anion on changing the ligand trans to ethene. X-Ray crystal structures of trans-[PtCl2(OH)(η2-C2H4)]− and trans-[PtCl2(η1-CH2NO2)(η2-C2H4)]−. Dalton Trans 2012; 41:3014-21. [DOI: 10.1039/c2dt11934j] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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