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Sharma B, Rao JS, Sastry GN. Effect of Solvation on Ion Binding to Imidazole and Methylimidazole. J Phys Chem A 2011; 115:1971-84. [DOI: 10.1021/jp1120492] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Bhaskar Sharma
- Molecular Modeling Group, Organic Chemical Sciences, Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500 607, AP, India
| | - J. Srinivasa Rao
- Molecular Modeling Group, Organic Chemical Sciences, Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500 607, AP, India
| | - G. Narahari Sastry
- Molecular Modeling Group, Organic Chemical Sciences, Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500 607, AP, India
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Tumor acidity as evolutionary spite. Cancers (Basel) 2011; 3:408-14. [PMID: 24310355 PMCID: PMC3756368 DOI: 10.3390/cancers3010408] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2010] [Revised: 12/21/2010] [Accepted: 01/17/2011] [Indexed: 12/18/2022] Open
Abstract
Most cancer cells shift their metabolic pathway from a metabolism reflecting the Pasteur-effect into one reflecting the Warburg-effect. This shift creates an acidic microenvironment around the tumor and becomes the driving force for a positive carcinogenesis feedback loop. As a consequence of tumor acidity, the tumor microenvironment encourages a selection of certain cell phenotypes that are able to survive in this caustic environment to the detriment of other cell types. This selection can be described by a process which can be modeled upon spite: the tumor cells reduce their own fitness by making an acidic environment, but this reduces the fitness of their competitors to an even greater extent. Moreover, the environment is an important dimension that further drives this spite process. Thus, diminishing the selective environment most probably interferes with the spite process. Such interference has been recently utilized in cancer treatment.
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Stander A, Joubert F, Joubert A. Docking, synthesis, and in vitro evaluation of antimitotic estrone analogs. Chem Biol Drug Des 2011; 77:173-81. [PMID: 21244635 DOI: 10.1111/j.1747-0285.2010.01064.x] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In the present study, Autodock 4.0 was employed to discover potential carbonic anhydrase IX inhibitors that are able to interfere with microtubule dynamics by binding to the Colchicine binding site of tubulin. Modifications at position 2' of estrone were made to include moieties that are known to improve the antimitotic activity of estradiol analogs. 2-ethyl-3-O-sulphamoyl-estra-1,3,5(10),15-tetraen-3-ol-17-one estronem (C9) and 2-ethyl-3-O-sulphamoyl-estra-1,3,5(10)16-tetraene (C12) were synthesized and tested in vitro. Growth studies were conducted utilizing spectrophotometrical analysis with crystal violet as DNA stain. Compounds C9 and C12 were cytotoxic in MCF-7 and MDA-MB-231 tumorigenic and metastatic breast cancer cells, SNO non-keratinizing squamous epithelium cancer cells and HeLa cells after 48 h exposure. Compounds C9 inhibited cell proliferation to 50% of the vehicle-treated controls from 110 to 160 nm and C12 at concentrations ranging from 180 to 220 nm. Confocal microscopy revealed abnormal spindle morphology in mitotic cells. Cell cycle analysis showed an increase in the number of cells in the G(2) /M fraction after 24 h and an increase in the number of cell in the sub-G(1) fraction after 48 h, indicating that the compounds are antimitotic and able to induce apoptosis.
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Affiliation(s)
- Andre Stander
- Department of Physiology, University of Pretoria, Pretoria, South Africa.
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Kockar F, Maresca A, Aydın M, Işık S, Turkoglu S, Sinan S, Arslan O, Güler ÖÖ, Turan Y, Supuran CT. Mutation of Phe91 to Asn in human carbonic anhydrase I unexpectedly enhanced both catalytic activity and affinity for sulfonamide inhibitors. Bioorg Med Chem 2010; 18:5498-503. [DOI: 10.1016/j.bmc.2010.06.056] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2010] [Revised: 06/13/2010] [Accepted: 06/16/2010] [Indexed: 10/19/2022]
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Lopez M, Paul B, Hofmann A, Morizzi J, Wu QK, Charman SA, Innocenti A, Vullo D, Supuran CT, Poulsen SA. S-Glycosyl Primary Sulfonamides−A New Structural Class for Selective Inhibition of Cancer-Associated Carbonic Anhydrases. J Med Chem 2009; 52:6421-32. [DOI: 10.1021/jm900914e] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Marie Lopez
- Eskitis Institute for Cell and Molecular Therapies, Griffith University, Nathan, Queensland 4111, Australia
| | - Blessy Paul
- Eskitis Institute for Cell and Molecular Therapies, Griffith University, Nathan, Queensland 4111, Australia
| | - Andreas Hofmann
- Eskitis Institute for Cell and Molecular Therapies, Griffith University, Nathan, Queensland 4111, Australia
| | - Julia Morizzi
- Centre for Drug Candidate Optimisation, Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Quoc K. Wu
- Centre for Drug Candidate Optimisation, Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Susan A. Charman
- Centre for Drug Candidate Optimisation, Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Alessio Innocenti
- Polo Scientifico, Laboratorio di Chimica Bioinorganica, Rm. 188, Università degli Studi di Firenze, Via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy
| | - Daniela Vullo
- Polo Scientifico, Laboratorio di Chimica Bioinorganica, Rm. 188, Università degli Studi di Firenze, Via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy
| | - Claudiu T. Supuran
- Polo Scientifico, Laboratorio di Chimica Bioinorganica, Rm. 188, Università degli Studi di Firenze, Via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy
| | - Sally-Ann Poulsen
- Eskitis Institute for Cell and Molecular Therapies, Griffith University, Nathan, Queensland 4111, Australia
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