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Truong D, Lam NYS, Kamalov M, Riisom M, Jamieson SMF, Harris PWR, Brimble MA, Metzler-Nolte N, Hartinger C. A solid support-based synthetic strategy for the site-selective functionalization of peptides with organometallic half-sandwich moieties. Chemistry 2021; 28:e202104049. [PMID: 34967066 DOI: 10.1002/chem.202104049] [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: 11/10/2021] [Indexed: 11/11/2022]
Abstract
The number of donor atoms available on peptides that can competitively coordinate to metal centers renders the site-selective generation of advanced metal-peptide conjugates in high purity a challenging venture. Herein, we present a transmetalation-based synthetic approach on solid support in which an imidazolium proligand can be used to selectively anchor a range of transition metal half-sandwich complexes onto peptides in the presence of multiple coordinative motifs. Amenable to solid support, a range of N-terminus and/or lysine conjugated metal-peptide conjugates were obtained in high purity after cleavage from the resin. The metalated peptides were evaluated for their anticancer properties against human cancer cell lines. While no cytotoxic activity was observed, this platform has the potential to i) provide a pathway to site-selective peptide labelling, ii) be explored as a biorthogonal handle and/or iii) generate a new strategy for ligand design in transition metal catalysts.
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Affiliation(s)
- Dianna Truong
- University of Auckland, School of Chemical Sciences, NEW ZEALAND
| | - Nelson Y S Lam
- The Scripps Research Institute, Department of Chemistry, UNITED STATES
| | - Meder Kamalov
- University of Auckland, School of Chemical Sciences, NEW ZEALAND
| | - Mie Riisom
- University of Auckland, School of Chemical Sciences, NEW ZEALAND
| | | | - Paul W R Harris
- University of Auckland, School of Chemical Sciences, NEW ZEALAND
| | | | | | - Christian Hartinger
- University of Auckland, School of Chemical Sciences, 23 Symonds Street, 1010, Auckland, NEW ZEALAND
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2
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Ilyukhin AB, Koroteev PS, Novotortsev VM. Supramolecular interactions and self-assembling in adducts of cymantrenecarboxylic acid with amino derivatives of five- and six-membered heterocyclic N-bases. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.03.054] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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3
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Oyarzo J, Bosque R, Toro P, Silva CP, Arancibia R, Font-Bardía M, Artigas V, Calvis C, Messeguer R, Klahn AH, López C. A novel type of organometallic 2-R-2,4-dihydro-1H-3,1-benzoxazine with R = [M(η5-C5H4)(CO)3] (M = Re or Mn) units. Experimental and computational studies of the effect of substituent R on ring-chain tautomerism. Dalton Trans 2019; 48:1023-1039. [DOI: 10.1039/c8dt03265c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Novel 2-cyrhetrenyl and cymantrenyl-2,4-dihydro-1H-3,1-benzoxazines.
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4
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Pérez-Arnaiz C, Leal J, Busto N, Carrión MC, Rubio AR, Ortiz I, Barone G, Díaz de Greñu B, Santolaya J, Leal JM, Vaquero M, Jalón FA, Manzano BR, García B. Role of Seroalbumin in the Cytotoxicity of cis-Dichloro Pt(II) Complexes with (N^N)-Donor Ligands Bearing Functionalized Tails. Inorg Chem 2018; 57:6124-6134. [PMID: 29722534 DOI: 10.1021/acs.inorgchem.8b00713] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Given the potent anticancer properties of cis-diamminedichloroplatinum(II) and knowing its mode of action, we synthesized four new cis-[PtCl2(N^N)] organoplatinum complexes, two with N-substituted pbi ligands (pbiR = 1-R-2-(2-pyridyl)benzimidazole) (namely, 1 and 2) and two more with 4,4'-disubstituted bpy ligands (bpy = 2,2'-bipyridine) (namely, 3 and 4). We explored their cytotoxicity and ability to bind to deoxyguanosine monophosphate (dGMP), DNA, and albumin models. By 1H NMR and UV-vis spectroscopies, circular dichroism, agarose gel electrophoresis, differential scanning calorimetry measurements, and density functional theory calculations, we verified that only 3 can form aquacomplex species after dimethyl sulfoxide solvation; surprisingly, 1, 2, and 3 can bind covalently to DNA, whereas 4 can form a noncovalent complex. Interestingly, only complexes 1 and 4 exhibit good cytotoxicity against human ovarian carcinoma (HeLa) cell line, whereas 2 and 3 are inactive. Although lung carcinoma (A549) cells are more resistant to the four platinum complexes than HeLa cells, when the protein concentration in the extracellular media is lower, the cytotoxicity becomes substantially enhanced. By native electrophoresis of bovine seroalbumin (BSA) and inductively coupled plasma mass spectrometry uptake studies we bear out, on one hand, that 2 and 3 can interact strongly with BSA and its cellular uptake is negligible and, on the other hand, that 1 and 4 can interact with BSA only weakly, its cellular uptake being higher by several orders. These results point up the important role of the protein binding features on their biological activity and cellular uptake of cis-"PtCl2" derivatives. Our results are valuable in the future rational design of new platinum complexes with improved biological properties, as they expose the importance not only of their DNA binding abilities but also of additional factors such as protein binding.
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Affiliation(s)
- Cristina Pérez-Arnaiz
- Departamento de Química , Universidad de Burgos , Plaza Misael Bañuelos s/n , 09001 Burgos , Spain
| | - Jorge Leal
- Facultad de Ciencias y Tecnologías Químicas-IRICA , Universidad de Castilla-La Mancha , Avda. Camilo J. Cela 10 , 13071 Ciudad Real , Spain
| | - Natalia Busto
- Departamento de Química , Universidad de Burgos , Plaza Misael Bañuelos s/n , 09001 Burgos , Spain
| | - María C Carrión
- Facultad de Ciencias y Tecnologías Químicas-IRICA , Universidad de Castilla-La Mancha , Avda. Camilo J. Cela 10 , 13071 Ciudad Real , Spain
| | - Ana R Rubio
- Departamento de Química , Universidad de Burgos , Plaza Misael Bañuelos s/n , 09001 Burgos , Spain
| | - Imanol Ortiz
- Facultad de Ciencias y Tecnologías Químicas-IRICA , Universidad de Castilla-La Mancha , Avda. Camilo J. Cela 10 , 13071 Ciudad Real , Spain
| | - Giampaolo Barone
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche , Università degli Studi di Palermo , Viale delle Scienze Ed. 17 , 90128 Palermo , Italy
| | - Borja Díaz de Greñu
- Facultad de Ciencias y Tecnologías Químicas-IRICA , Universidad de Castilla-La Mancha , Avda. Camilo J. Cela 10 , 13071 Ciudad Real , Spain
| | - Javier Santolaya
- Departamento de Química , Universidad de Burgos , Plaza Misael Bañuelos s/n , 09001 Burgos , Spain
| | - José M Leal
- Departamento de Química , Universidad de Burgos , Plaza Misael Bañuelos s/n , 09001 Burgos , Spain
| | - Mónica Vaquero
- Departamento de Química , Universidad de Burgos , Plaza Misael Bañuelos s/n , 09001 Burgos , Spain
| | - Félix A Jalón
- Facultad de Ciencias y Tecnologías Químicas-IRICA , Universidad de Castilla-La Mancha , Avda. Camilo J. Cela 10 , 13071 Ciudad Real , Spain
| | - Blanca R Manzano
- Facultad de Ciencias y Tecnologías Químicas-IRICA , Universidad de Castilla-La Mancha , Avda. Camilo J. Cela 10 , 13071 Ciudad Real , Spain
| | - Begoña García
- Departamento de Química , Universidad de Burgos , Plaza Misael Bañuelos s/n , 09001 Burgos , Spain
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Potkin VI, Petkevich SK, Kletskov AV, Kolesnik IA, Dikusar EA, Rozentsveig IB, Levkovskaya GG, Nasirova DK, Borisova KK, Zubkov FI. Synthesis of Azaheterocyclic Cymantrene Derivatives. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2018. [DOI: 10.1134/s1070428018030132] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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6
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Synthesis of hybrid compounds composed of daunorubicin covalently linked with Cp 2 Fe and CpMn(CO) 3. MENDELEEV COMMUNICATIONS 2017. [DOI: 10.1016/j.mencom.2017.11.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Concha C, Quintana C, Klahn AH, Artigas V, Fuentealba M, Biot C, Halloum I, Kremer L, López R, Romanos J, Huentupil Y, Arancibia R. Organometallic tosyl hydrazones: Synthesis, characterization, crystal structures and in vitro evaluation for anti- Mycobacterium tuberculosis and antiproliferative activities. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.04.031] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Albada B, Metzler-Nolte N. Organometallic–Peptide Bioconjugates: Synthetic Strategies and Medicinal Applications. Chem Rev 2016; 116:11797-11839. [DOI: 10.1021/acs.chemrev.6b00166] [Citation(s) in RCA: 149] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Bauke Albada
- Laboratory of Organic Chemistry, Wageningen University & Research, Stippeneng 4, 6708 WE Wageningen, The Netherlands
| | - Nils Metzler-Nolte
- Inorganic
Chemistry I − Bioinorganic Chemistry, Ruhr University Bochum, Universitätsstrasse 150, 44780-D Bochum, Germany
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9
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Ferrocenyl–cymantrenyl hetero-bimetallic chalcones: Synthesis, structure and biological properties. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2014.12.070] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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10
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Hu W, Hoyer J, Neundorf I, Govender P, Smith GS, Schatzschneider U. Synthesis of CpM(CO)3-DAB and -PAMAM Dendrimer Conjugates and Preliminary Evaluation of Their Biological Activity. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201403060] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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11
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Patra M, Wenzel M, Prochnow P, Pierroz V, Gasser G, Bandow JE, Metzler-Nolte N. An organometallic structure-activity relationship study reveals the essential role of a Re(CO) 3 moiety in the activity against gram-positive pathogens including MRSA. Chem Sci 2014; 6:214-224. [PMID: 28553471 PMCID: PMC5433042 DOI: 10.1039/c4sc02709d] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Accepted: 09/24/2014] [Indexed: 01/30/2023] Open
Abstract
A systematic structure activity relationship reveals the contribution of individual organometallic moieties to the potency of a new structural class of hetero-trimetallic antibacterial agents.
The worrying appearance of microbial resistance to antibiotics is a worldwide problem which needs to be tackled urgently. Microbial resistance to the common classes of antibiotics involving purely organic compounds unfortunately develops very rapidly and in most cases, resistance was detected soon after or even before release of the antibiotic to the market. Therefore, novel concepts for antibiotics must be investigated, and metal-containing compounds hold particular promise in that area. Taking a trimetallic complex (1a) which contains a ferrocenyl (Fc), a CpMn(CO)3 (cymantrene) and a [(dpa)Re(CO)3] residue as the lead structure, a systematic structure–activity relationship (SAR) study against various gram-positive pathogenic bacteria including methicillin-resistant Staphylococcus aureus (MRSA) strains was performed. The [(dpa)Re(CO)3] moiety was discovered to be the essential unit for the observed antibacterial activity of 1a. The ferrocenyl and CpMn(CO)3 units can be replaced one by one or both together by organic moieties such as a phenyl ring without loss of antibacterial activity. The most potent mono-metallic complex (9c′) has an antibacterial activity comparable to the well-established organic drugs amoxicillin and norfloxacin and importantly, only moderate cytotoxicity against mammalian cells. Microbiological studies on membrane potential, membrane permeabilization, and cell wall integrity revealed that 9c′ targets the bacterial membrane and disturbs cell wall integrity, but shows more efficient membrane permeabilization than the lead structure 1a.
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Affiliation(s)
- Malay Patra
- Lehrstuhl für Anorganische Chemie I - Bioanorganische Chemie , Fakultät für Chemie und Biochemie , Ruhr-Universität Bochum , Universitätsstrasse 150 , D-44801 Bochum , Germany .
| | - Michaela Wenzel
- Ruhr-Universität Bochum , Biologie der Mikroorganismen , Arbeitsgruppe Mikrobielle Antibiotikaforschung , Universitätsstrasse 150 , D-44801 Bochum , Germany . ; ; Tel: +49-234-32-23102
| | - Pascal Prochnow
- Ruhr-Universität Bochum , Biologie der Mikroorganismen , Arbeitsgruppe Mikrobielle Antibiotikaforschung , Universitätsstrasse 150 , D-44801 Bochum , Germany . ; ; Tel: +49-234-32-23102
| | - Vanessa Pierroz
- Department of Chemistry , University of Zurich , Winterthurerstrasse 190 , CH-8057 Zurich , Switzerland
| | - Gilles Gasser
- Department of Chemistry , University of Zurich , Winterthurerstrasse 190 , CH-8057 Zurich , Switzerland
| | - Julia E Bandow
- Ruhr-Universität Bochum , Biologie der Mikroorganismen , Arbeitsgruppe Mikrobielle Antibiotikaforschung , Universitätsstrasse 150 , D-44801 Bochum , Germany . ; ; Tel: +49-234-32-23102
| | - Nils Metzler-Nolte
- Lehrstuhl für Anorganische Chemie I - Bioanorganische Chemie , Fakultät für Chemie und Biochemie , Ruhr-Universität Bochum , Universitätsstrasse 150 , D-44801 Bochum , Germany .
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12
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Sista P, Ghosh K, Martinez JS, Rocha RC. Metallo-Biopolymers: Conjugation Strategies and Applications. POLYM REV 2014. [DOI: 10.1080/15583724.2014.913063] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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13
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Pai S, Radacki K, Schatzschneider U. Sonogashira, CuAAC, and Oxime Ligations for the Synthesis of MnITricarbonyl PhotoCORM Peptide Conjugates. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402123] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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14
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Patel SK, Tirkey V, Mishra S, Dash HR, Das S, Shukla M, Saha S, Mobin SM, Chatterjee S. Synthesis of mono- and bi-metallic dithiocarboxylate-alkyne complexes from sunlight driven insertion reaction and their antibacterial activity. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2013.09.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Synthesis, characterization and antibacterial studies of ferrocenyl and cymantrenyl hydrazone compounds. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2013.02.020] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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16
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Ilyukhin AB, Koroteev PS, Kiskin MA, Dobrokhotova ZV, Novotortsev VM. Supramolecular interactions in the structures of carboxylate derivatives of cymantrene and single-charged cations. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2012.08.038] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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17
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Glans L, Hu W, Jöst C, de Kock C, Smith PJ, Haukka M, Bruhn H, Schatzschneider U, Nordlander E. Synthesis and biological activity of cymantrene and cyrhetrene 4-aminoquinoline conjugates against malaria, leishmaniasis, and trypanosomiasis. Dalton Trans 2012; 41:6443-50. [PMID: 22421887 DOI: 10.1039/c2dt30077j] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Organometallic analogues of chloroquine show promise as new antimalarial agents capable of overcoming resistance to the parent drug chloroquine. Here, the synthesis and characterization of three new cymantrene (CpMn(CO)(3)) and cyrhetrene (CpRe(CO)(3)) 4-aminoquinoline conjugates with either an amine or amide linker are reported. The antimalarial activity of the new organometallic conjugates N-(2-(7-chloroquinolin-4-ylamino)ethyl)-4-cymantrenylbutanamide (3), N-(2-(7-chloroquinolin-4-ylamino)ethyl)-4-cyrhetrenylbutanamide (4) and N-(7-chloroquinolin-4-yl)-N'-(cymantrenylmethyl)ethane-1,2-diamine (6) was evaluated against a chloroquine-sensitive (CQS) and a chloroquine-resistant strain (CQR) of the malaria parasite Plasmodium falciparum. The cymantrene complex with an amine linker (6) showed good activity against the CQS strain but was inactive against the CQR strain. In contrast, cymantrene and cyrhetrene compounds with an amide linker were active against both the CQS and the CQR strain. In addition, the antibacterial, anti-trypanosomal and anti-leishmanial activity of the compounds was evaluated. Compound 6 showed submicromolar activity against Trypanosoma brucei at a concentration where the toxicity to normal human cells is low. No significant effect was noticed on the exchange of manganese for rhenium in the CpM(CO)(3) moiety in any of the biological assays.
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Affiliation(s)
- Lotta Glans
- Chemical Physics, Center for Chemistry and Chemical Engineering, Lund University, Lund, Sweden
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18
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Romanov AS, Angles GF, Antipin MY, Timofeeva TV. Tricarbonyl(η5-formylcyclopentadienyl)manganese(I) and tricarbonyl(η5-formylcyclopentadienyl)rhenium(I) containing short π(CO)···π(CO) and π(CO)···π interactions. Acta Crystallogr C 2012; 68:m69-72. [PMID: 22382537 DOI: 10.1107/s0108270112005562] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2011] [Accepted: 02/08/2012] [Indexed: 11/11/2022] Open
Abstract
The structures of tricarbonyl(formylcyclopentadienyl)manganese(I), [Mn(C(6)H(5)O)(CO)(3)], (I), and tricarbonyl(formylcyclopentadienyl)rhenium(I), [Re(C(6)H(5)O)(CO)(3)], (II), were determined at 100 K. Compounds (I) and (II) both possess a carbonyl group in a trans position relative to the substituted C atom of the cyclopentadienyl ring, while the other two carbonyl groups are in almost eclipsed positions relative to their attached C atoms. Analysis of the intermolecular contacts reveals that the molecules in both compounds form stacks due to short attractive π(CO)...π(CO) and π(CO)...π interactions, along the crystallographic c axis for (I) and along the [201] direction for (II). Symmetry-related stacks are bound to each other by weak intermolecular C-H...O hydrogen bonds, leading to the formation of the three-dimensional network.
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Affiliation(s)
- Alexander S Romanov
- A N Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russian Federation.
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19
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Patra M, Gasser G, Wenzel M, Merz K, Bandow JE, Metzler-Nolte N. Sandwich and Half-Sandwich Derivatives of Platensimycin: Synthesis and Biological Evaluation. Organometallics 2012. [DOI: 10.1021/om201146c] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Malay Patra
- Lehrstuhl für Anorganische
Chemie I-Bioanorganische Chemie, Fakultät für Chemie und Biochemie, Ruhr-Universität Bochum, Gebäude NC 3
Nord, Universitätsstrasse 150, D-44801 Bochum, Germany,
| | - Gilles Gasser
- Lehrstuhl für Anorganische
Chemie I-Bioanorganische Chemie, Fakultät für Chemie und Biochemie, Ruhr-Universität Bochum, Gebäude NC 3
Nord, Universitätsstrasse 150, D-44801 Bochum, Germany,
- Institute of Inorganic Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich,
Switzerland
| | - Michaela Wenzel
- Lehrstuhl für
Biologie
der Mikroorganismen, Fakultät
für Biologie und Biotechnologie, Ruhr-Universität Bochum, Universitätsstrasse
150, D-44801 Bochum, Germany
| | - Klaus Merz
- Lehrstuhl für Anorganische
Chemie I-Bioanorganische Chemie, Fakultät für Chemie und Biochemie, Ruhr-Universität Bochum, Gebäude NC 3
Nord, Universitätsstrasse 150, D-44801 Bochum, Germany,
| | - Julia E. Bandow
- Lehrstuhl für
Biologie
der Mikroorganismen, Fakultät
für Biologie und Biotechnologie, Ruhr-Universität Bochum, Universitätsstrasse
150, D-44801 Bochum, Germany
| | - Nils Metzler-Nolte
- Lehrstuhl für Anorganische
Chemie I-Bioanorganische Chemie, Fakultät für Chemie und Biochemie, Ruhr-Universität Bochum, Gebäude NC 3
Nord, Universitätsstrasse 150, D-44801 Bochum, Germany,
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Gasser G, Neumann S, Ott I, Seitz M, Heumann R, Metzler-Nolte N. Preparation and Biological Evaluation of Di-Hetero-Organometallic-Containing PNA Bioconjugates. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201100734] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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21
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Influence of the metal center and linker on the intracellular distribution and biological activity of organometal-peptide conjugates. J Biol Inorg Chem 2011; 17:175-85. [PMID: 21898043 DOI: 10.1007/s00775-011-0840-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2011] [Accepted: 08/21/2011] [Indexed: 01/17/2023]
Abstract
Organometallic complexes conjugated to cell-penetrating peptides (CPPs) are promising systems for diagnostic imaging and therapeutic applications in human medicine. Recently, we reported on the synthesis of cymantrene(CpMn(CO)(3))-CPP conjugates with biological activity on different cancer cell lines. However, the precise mechanism of cytotoxicity remained elusive in these studies. To investigate the role of the metal center and the linker between the CpM(CO)(3) moiety and the peptide, a number of derivatives with manganese replaced by rhenium and the keto linker originally used substituted by a methylene group were prepared and fully characterized by (1)H NMR spectroscopy, infrared spectroscopy, electrospray ionization mass spectrometry, and elemental analysis as well as X-ray structure determination. The organometal-peptide conjugates as well as carboxyfluorescein-labeled derivatives thereof were prepared by solid-phase peptide synthesis, purified by high-performance liquid chromatography, and analyzed by mass spectrometry. Fluorescence microscopy studies of MCF-7 human breast cancer cells revealed an efficient cellular uptake and pronounced nuclear localization of the bioconjugates with the methylene linker compared with systems with the keto group. In addition, the latter also showed a higher cytotoxicity. In contrast, the variation of the metal center from manganese to rhenium had a negligible effect. The structure-activity relationships determined in the present work will aid in the further tuning of the biological activity of organometal-peptide conjugates.
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Schatzschneider U. PhotoCORMs: Light-triggered release of carbon monoxide from the coordination sphere of transition metal complexes for biological applications. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2011.02.068] [Citation(s) in RCA: 218] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Beck W. Metal Complexes of Biologically Important Ligands, CLXXVI.[1] Formation of Peptides within the Coordination Sphere of Metal Ions and of Classical and Organometallic Complexes and Some Aspects of Prebiotic Chemistry. Z Anorg Allg Chem 2011. [DOI: 10.1002/zaac.201100137] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Utepova IA, Musikhina AA, Chupakhin ON, Slepukhin PA. New Approach to the Synthesis of Azinylcymantrenes. Organometallics 2011. [DOI: 10.1021/om200159f] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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25
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Subcellular IR Imaging of a Metal-Carbonyl Moiety Using Photothermally Induced Resonance. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201003161] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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26
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Policar C, Waern JB, Plamont MA, Clède S, Mayet C, Prazeres R, Ortega JM, Vessières A, Dazzi A. Subcellular IR imaging of a metal-carbonyl moiety using photothermally induced resonance. Angew Chem Int Ed Engl 2010; 50:860-4. [PMID: 20941714 DOI: 10.1002/anie.201003161] [Citation(s) in RCA: 129] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2010] [Indexed: 11/09/2022]
Affiliation(s)
- Clotilde Policar
- Laboratoire des BioMolécules, Université Paris 6, CNRS-UMR7203, Département Chimie de l'ENS, 24 rue Lhomond 75231 Paris Cedex 05, France.
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27
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Patra M, Gasser G, Bobukhov D, Merz K, Shtemenko AV, Metzler-Nolte N. Sequential insertion of three different organometallics into a versatile building block containing a PNA backbone. Dalton Trans 2010; 39:5617-9. [PMID: 20485811 DOI: 10.1039/c003598j] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the view of developing a synthetic route for the controlled insertion of distinct organometallic moieties into peptide nucleic acid (PNA) oligomers, a proof-of-principle study of the chemoselective insertion of three different organometallics into a building block containing both a PNA backbone and an alkyne side-chain is presented in this study.
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Affiliation(s)
- Malay Patra
- Lehrstuhl für Anorganische Chemie I, Fakultät für Chemie und Biochemie, Ruhr-Universität Bochum, Gebäude NC 3 Nord, Universitätsstr. 150, 44801, Bochum, Germany
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28
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Peindy N'Dongo HW, Raposinho PD, Fernandes C, Santos I, Can D, Schmutz P, Spingler B, Alberto R. Preparation and biological evaluation of cyclopentadienyl-based 99mTc-complexes [(Cp-R)99mTc(CO)3] mimicking benzamides for malignant melanoma targeting. Nucl Med Biol 2010; 37:255-64. [DOI: 10.1016/j.nucmedbio.2009.11.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2009] [Revised: 11/11/2009] [Accepted: 11/25/2009] [Indexed: 10/19/2022]
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29
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Affiliation(s)
- Ulrich Schatzschneider
- Lehrstuhl für Anorganische Chemie I – Bioanorganische Chemie and Research Department Interfacial Systems Chemistry (RD IFSC), Ruhr‐Universität Bochum NC 3/74, Universitätsstr. 150, 44801 Bochum, Germany, Fax: +49‐234‐32‐14378
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30
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Splith K, Neundorf I, Hu W, Peindy N'Dongo HW, Vasylyeva V, Merz K, Schatzschneider U. Influence of the metal complex-to-peptide linker on the synthesis and properties of bioactive CpMn(CO)3 peptide conjugates. Dalton Trans 2010; 39:2536-45. [PMID: 20179846 DOI: 10.1039/b916907e] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
By combining organometallic groups and peptides, a large number of conjugates with interesting new biological properties can be prepared. Especially, attachment to cell-penetrating peptides (CPP) that act as efficient cell delivery vehicles has come to the fore. However, the presence of the metal moiety in such systems can interfere with standard conjugate synthesis procedures which therefore need to be optimized for every new compound. In this work, we report on the preparation of six new cymantrene-sC18 peptide bioconjugates that were prepared by solid phase peptide synthesis (SPPS) techniques. The cymantrene complexes were chosen for their different linker to the peptide, to study the influence of the linker group on cellular uptake and cell viability of the conjugates. Interestingly, the attachment of the metal complex leads to a non-standard cleavage of the Rink amide linker used in the SPPS protocol under trifluoroacetic acid (TFA) treatment, resulting in peptide amides that are N-alkylated at the C-terminus. Furthermore, we found that depending on the type of cymantrene moiety attached, the formation of reactive carbocations which result from decomposition of the resin linker is facilitated and can alkylate the metal complex moiety. Both effects were analyzed by MS/MS studies and cleavage mixtures for efficient elimination of this byproduct formation were identified. Moreover, initial biological testing of the cytotoxicity of one of the bioconjugates gave promising results. Concentration-dependent cell viability studies of Cym1-sC18 on human MCF-7 breast adenocarcinoma cells gave an IC(50) value of 59.8 (+/- 6.7) microM and demonstrate their potential in anticancer chemotherapy.
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Affiliation(s)
- Katrin Splith
- Institut für Biochemie, Universität Leipzig, Brüderstr. 34, D-04103, Leipzig, Germany
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31
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32
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Zagermann J, Merz K, Metzler-Nolte N. Labeling of Peptides with Halocarbonyltungsten Complexes Containing Functional η2-Alkynyl Ligands. Organometallics 2009. [DOI: 10.1021/om9002297] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Johannes Zagermann
- Lehrstuhl für Anorganische Chemie I−Bioanorganische Chemie, Fakultät für Chemie und Biochemie, Ruhr-Universität Bochum, Universitätsstrasse 150, 44801 Bochum, Germany
| | - Klaus Merz
- Lehrstuhl für Anorganische Chemie I−Bioanorganische Chemie, Fakultät für Chemie und Biochemie, Ruhr-Universität Bochum, Universitätsstrasse 150, 44801 Bochum, Germany
| | - Nils Metzler-Nolte
- Lehrstuhl für Anorganische Chemie I−Bioanorganische Chemie, Fakultät für Chemie und Biochemie, Ruhr-Universität Bochum, Universitätsstrasse 150, 44801 Bochum, Germany
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