|
1
|
Shanthakumari R, Hema R, Ramamurthy K, Sridar B, Stoeckli-Evans H. (Dimethyl sulfoxide-κO)bis-(thio-semicarbazide-κN,S)zinc dipicrate dimethyl sulfoxide solvate monohydrate. Acta Crystallogr Sect E Struct Rep Online 2011; 67:m133-4. [PMID: 21522821 PMCID: PMC3051735 DOI: 10.1107/s160053681005378x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2010] [Accepted: 12/22/2010] [Indexed: 11/11/2022]
Abstract
The title complex, [Zn(CH5N3S)2(C2H6OS)](C6H2N3O7)2·C2H6OS·H2O, is composed of a [Zn(thiosemicarbazide)2(DMSO)]2+ cation (where DMSO is dimethyl sulfoxide), and two picrate anions. In the asymmetric unit, there is also a solvent molecule of DMSO and a water molecule of crystallization. In the cation, the ZnII atom is five-coordinated in a distorted square–pyramidal geometry. It coordinates to the O atom of a DMSO molecule and to the S and one N atom of two thiosemicarbazide molecules, which behave as bidentate ligands coordinating in a trans arrangement. In the crystal, a number of N—H⋯O, O—H⋯O and N—H⋯S hydrogen bonds link the molecules into two-dimensional networks. These networks are further linked via weak C—H⋯O interactions, forming a three-dimensional arrangement. Positional disorder in one methyl group of the coordinated DMSO molecule and in the two picrate anions was observed.
Collapse
|
|
2
|
Hall MD, Salam NK, Hellawell JL, Fales HM, Kensler CB, Ludwig JA, Szakacs G, Hibbs DE, Gottesman MM. Synthesis, activity, and pharmacophore development for isatin-beta-thiosemicarbazones with selective activity toward multidrug-resistant cells. J Med Chem 2009; 52:3191-204. [PMID: 19397322 PMCID: PMC2744114 DOI: 10.1021/jm800861c] [Citation(s) in RCA: 127] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We have recently identified a new class of compounds that selectively kill cells that express P-glycoprotein (P-gp, MDR1), the ATPase efflux pump that confers multidrug resistance on cancer cells. Several isatin-beta-thiosemicarbazones from our initial study have been validated and a range of analogues synthesized and tested. A number demonstrated improved MDR1-selective activity over the lead, NSC73306 (1). Pharmacophores for cytotoxicity and MDR1 selectivity were generated to delineate the structural features required for activity. The MDR1-selective pharmacophore highlights the importance of aromatic/hydrophobic features at the N4 position of the thiosemicarbazone and the reliance on the isatin moiety as key bioisosteric contributors. Additionally, a quantitative structure-activity relationship (QSAR) model that yielded a cross-validated correlation coefficient of 0.85 effectively predicts the cytotoxicity of untested thiosemicarbazones. Together, the models serve as effective approaches for predicting structures with MDR1-selective activity and aid in directing the search for the mechanism of action of 1.
Collapse
Affiliation(s)
- Matthew D. Hall
- Laboratory of Cell Biology, National Cancer Institute, National Institutes of Health, Bethesda, MD 20893, U.S.A
| | - Noeris K. Salam
- Group in Biomolecular Structure and Informatics, Pharmaceutical Chemistry Division, Faculty of Pharmacy, The University of Sydney, NSW 2006, Australia
| | - Jennifer L. Hellawell
- Laboratory of Cell Biology, National Cancer Institute, National Institutes of Health, Bethesda, MD 20893, U.S.A
| | - Henry M. Fales
- Laboratory of Applied Mass Spectrometry, National Heart, Lung & Blood Institute, National Institutes of Health, Bethesda, MD 20893, U.S.A
| | | | - Joseph A. Ludwig
- Dept. of Sarcoma Medical Oncology, University of Texas – MD Anderson Cancer Center, Houston, TX 70030, U.S.A
| | - Gergely Szakacs
- Institute of Enzymology, Hungarian Academy of Sciences, 1113 Karolina ut 29, Budapest, Hungary
| | - David E. Hibbs
- Group in Biomolecular Structure and Informatics, Pharmaceutical Chemistry Division, Faculty of Pharmacy, The University of Sydney, NSW 2006, Australia
| | - Michael M. Gottesman
- Laboratory of Cell Biology, National Cancer Institute, National Institutes of Health, Bethesda, MD 20893, U.S.A
| |
Collapse
|
|
3
|
Sundaresan N, Suresh CH, Thomas T, Thomas TJ, Pillai CKS. Liquid Crystalline Phase Behavior of High Molecular Weight DNA: A Comparative Study of the Influence of Metal Ions of Different Size, Charge and Binding Mode. Biomacromolecules 2008; 9:1860-9. [DOI: 10.1021/bm800101x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Neethu Sundaresan
- Chemical Sciences and Technology Division and Computational Modeling and Simulation Section, National Institute for Interdisciplinary Science and Technology (formerly Regional Research Laboratory), Council of Scientific and Industrial Research, Thiruvananthapuram 695019, India, and Departments of Environmental and Occupational Medicine and Medicine, The Cancer Institute of New Jersey, University of Medicine and Dentistry of New Jersey, Robert Wood Johnson Medical School, New Jersey 08903
| | - Cherumuttathu H. Suresh
- Chemical Sciences and Technology Division and Computational Modeling and Simulation Section, National Institute for Interdisciplinary Science and Technology (formerly Regional Research Laboratory), Council of Scientific and Industrial Research, Thiruvananthapuram 695019, India, and Departments of Environmental and Occupational Medicine and Medicine, The Cancer Institute of New Jersey, University of Medicine and Dentistry of New Jersey, Robert Wood Johnson Medical School, New Jersey 08903
| | - Thresia Thomas
- Chemical Sciences and Technology Division and Computational Modeling and Simulation Section, National Institute for Interdisciplinary Science and Technology (formerly Regional Research Laboratory), Council of Scientific and Industrial Research, Thiruvananthapuram 695019, India, and Departments of Environmental and Occupational Medicine and Medicine, The Cancer Institute of New Jersey, University of Medicine and Dentistry of New Jersey, Robert Wood Johnson Medical School, New Jersey 08903
| | - T. J. Thomas
- Chemical Sciences and Technology Division and Computational Modeling and Simulation Section, National Institute for Interdisciplinary Science and Technology (formerly Regional Research Laboratory), Council of Scientific and Industrial Research, Thiruvananthapuram 695019, India, and Departments of Environmental and Occupational Medicine and Medicine, The Cancer Institute of New Jersey, University of Medicine and Dentistry of New Jersey, Robert Wood Johnson Medical School, New Jersey 08903
| | - C. K. S. Pillai
- Chemical Sciences and Technology Division and Computational Modeling and Simulation Section, National Institute for Interdisciplinary Science and Technology (formerly Regional Research Laboratory), Council of Scientific and Industrial Research, Thiruvananthapuram 695019, India, and Departments of Environmental and Occupational Medicine and Medicine, The Cancer Institute of New Jersey, University of Medicine and Dentistry of New Jersey, Robert Wood Johnson Medical School, New Jersey 08903
| |
Collapse
|
|
4
|
|
|
6
|
Rohde W, Shafer R, Idriss J, Levinson W. Binding of N-methyl isatin beta-thiosemicarbazone-copper complexes to proteins and nucleic acids. J Inorg Biochem 1979; 10:183-94. [PMID: 458443 DOI: 10.1016/s0162-0134(00)80278-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
N-Methyl isatin beta-thiosemicarbazone-copper complexes interact with nucleic acids and proteins as shown by ultraviolet (UV) and visible spectroscopy and Sephadex exclusion chromatography. The Cu++ ions are most effective; Co++ ions have less albeit significant activity. Chelating agents, such as Tris and histidine, high NaCl concentration, and dimethyl sulfoxide reduce the binding of the drug-metal complex. The binding constant of the drug-copper complex to calf-thymus DNA was calculated to range between 6.9 x 10(4) and 2.7 x 10(5) M-1.
Collapse
|