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Synthesis of combretastatin analogs: evaluation of in vitro anticancer activity and molecular docking studies. Med Chem Res 2011. [DOI: 10.1007/s00044-011-9887-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Congiu C, Onnis V, Vesci L, Castorina M, Pisano C. Synthesis and in vitro antitumor activity of new 4,5-dihydropyrazole derivatives. Bioorg Med Chem 2010; 18:6238-48. [DOI: 10.1016/j.bmc.2010.07.037] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2010] [Revised: 07/12/2010] [Accepted: 07/15/2010] [Indexed: 02/08/2023]
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3
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Tanpure RP, Strecker TE, Chaplin DJ, Siim BG, Trawick ML, Pinney KG. Regio- and stereospecific synthesis of mono-beta-d-glucuronic acid derivatives of combretastatin A-1. JOURNAL OF NATURAL PRODUCTS 2010; 73:1093-1101. [PMID: 20496923 DOI: 10.1021/np100108e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Synthetic routes have been established for the preparation of regio- and stereoisomerically pure samples of the mono-beta-d-glucuronic acid derivatives of combretastatin A-1, referred to as CA1G1 (5a) and CA1G2 (6a). Judicious choice of protecting groups for the catechol ring was required for the regiospecific introduction of the glucuronic acid moiety. The tosyl group proved advantageous in this regard. The two monoglucuronic acid analogues demonstrate low cytotoxicity (compared to CA1, 2) against selected human cancer cell lines, with CA1G1 being slightly more potent than CA1G2.
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Affiliation(s)
- Rajendra P Tanpure
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, TX 76798-7348, USA
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Aprile S, Del Grosso E, Grosa G. Identification of the human UDP-glucuronosyltransferases involved in the glucuronidation of combretastatin A-4. Drug Metab Dispos 2010; 38:1141-6. [PMID: 20375181 DOI: 10.1124/dmd.109.031435] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
The stilbenic compound (Z)-combretastatin A-4 (CA-4) has been described as a potent tubulin polymerization inhibitor. In vivo, CA-4 binds to tubulin and inhibits microtubule depolymerization, which results in morphological changes in proliferating endothelial cells. Combretastatin A-4 prodrug phosphate is a leading vascular disrupting agent and is currently being evaluated in multiple clinical trials as a treatment for solid tumors. The aim of this study was to identify and characterize the UDP-glucuronosyltransferase (UGT) isoforms involved in CA-4 glucuronidation by incubation with human liver microsomes and a panel of nine liver-expressed recombinant UGT Supersomes (1A1, 1A3, 1A4, 1A6, 1A9, 2B4, 2B7, 2B15, and 2B17). As we observed, the high rate of formation of CA-4 glucuronide (V(max) = 12.78 +/- 0.29 nmol/min/mg protein) and the low K(m) (6.98 +/- 0.65 microM) denoted that UGT1A9 was primarily responsible for the in vitro glucuronidation of CA-4. UGT1A6 was also a significant contributor to CA-4 glucuronidation (V(max) = 3.95 +/- 0.13 nmol/min/mg protein and S(50) = 44.80 +/- 3.54 microM). Furthermore, we demonstrated that the kinetics of CA-4 glucuronidation with liver microsomes but also with a panel of recombinant UGTs is atypical as it fits two different models: the substrate inhibition and also the sigmoidal kinetic model. Finally, experiments conducted to inhibit the glucuronosyltransferase activity in the human liver microsomes assay showed that phenylbutazone, trifluoperazine, propofol, and 1-naphthol effectively inhibited CA-4 glucuronidation.
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Affiliation(s)
- Silvio Aprile
- Dipartimento di Scienze Chimiche, Alimentari, Farmaceutiche e Farmacologiche and Drug and Food Biotechnology Center, Università degli Studi del Piemonte Orientale A. Avogadro, 28100 Novara, Italy.
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Ducki S, Mackenzie G, Greedy B, Armitage S, Chabert JFD, Bennett E, Nettles J, Snyder JP, Lawrence NJ. Combretastatin-like chalcones as inhibitors of microtubule polymerisation. Part 2: Structure-based discovery of alpha-aryl chalcones. Bioorg Med Chem 2009; 17:7711-22. [PMID: 19837594 DOI: 10.1016/j.bmc.2009.09.044] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2009] [Revised: 09/10/2009] [Accepted: 09/21/2009] [Indexed: 10/20/2022]
Abstract
Tubulin is an important molecular target in cancer chemotherapy. Antimitotic agents able to bind to the protein are currently under study, commonly used in the clinic to treat a variety of cancers and/or exploited as probes to investigate the protein's structure and function. Here we report the binding modes for a series of colchicinoids, combretastatin A4 and chalcones established from docking studies carried out on the structure of tubulin in complex with colchicine. The proposed models, in agreement with published biochemical data, show that combretastatin A4 binds to the colchicine site of beta-tubulin and that chalcones assume an orientation similar to that of podophyllotoxin. The models can be used to design a new class of podophyllotoxin mimics, the alpha-aryl chalcones, capable of binding to the colchicine-binding site of beta-tubulin with higher affinity.
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Affiliation(s)
- Sylvie Ducki
- Department of Chemistry, UMIST, Manchester M60 1QD, UK.
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Aprile S, Del Grosso E, Grosa G. In vitroandin vivophase II metabolism of combretastatin A-4: Evidence for the formation of a sulphate conjugate metabolite. Xenobiotica 2009; 39:148-61. [DOI: 10.1080/00498250802566976] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Solubility dependence of peracylated d-glucopyranoses in supercritical carbon dioxide on the structure of their acyl moieties. J Supercrit Fluids 2008. [DOI: 10.1016/j.supflu.2007.08.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Haines AH, Hughes DL. The crystal structures of 1,2,3,4,6-penta-O-trimethylacetyl- and 1,2,3,4,6-penta-O-dimethylacetyl-beta-D-glucopyranose. Carbohydr Res 2007; 342:2264-9. [PMID: 17669380 DOI: 10.1016/j.carres.2007.06.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2007] [Revised: 06/21/2007] [Accepted: 06/22/2007] [Indexed: 11/18/2022]
Abstract
The crystal structures of 1,2,3,4,6-penta-O-trimethylacetyl-beta-D-glucopyranose (1) and 1,2,3,4,6-penta-O-dimethylacetyl-beta-D-glucopyranose (2) have been determined by X-ray diffraction analysis and compared with that reported for 1,2,3,4,6-penta-O-acetyl-beta-D-glucopyranose (3). Whereas 1 has a well ordered structure, the acyl groups in 2 at positions 1 and 2 of the pyranose ring show disorder with respect to the positions of the alpha-methyl groups. As with 3, the C=O bonds of the acyl groups at positions 1-4 show a preference for near alignment with respective ring C-H bonds, but there are, nevertheless, significant differences in the torsional angles defining this arrangement. Intermolecular weak hydrogen bonding in the three compounds is not significantly different and involves carbonyl oxygen atoms as the acceptors.
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Affiliation(s)
- Alan H Haines
- School of Chemical Sciences and Pharmacy, University of East Anglia, Norwich NR4 7TJ, UK.
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Bellina F, Rossi R. Synthesis and biological activity of pyrrole, pyrroline and pyrrolidine derivatives with two aryl groups on adjacent positions. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.05.024] [Citation(s) in RCA: 531] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Medarde M, Maya ABS, Pérez-Melero C. Naphthalene combretastatin analogues: synthesis, cytotoxicity and antitubulin activity. J Enzyme Inhib Med Chem 2006; 19:521-40. [PMID: 15662956 DOI: 10.1080/14756360412331280473] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
Synthesis and evaluation of new combretastatin analogues with varied modifications on the bridge and the aromatic rings, have shown that the 2-naphthyl moiety is a good surrogate for the 3-hydroxy-4-methoxyphenyl (B-ring) of combretastatin A-4. Other bicyclic systems, such as 6(7)-quinolyl and 5-indolyl, can replace the B-ring, but they produce less potent analogues in the cytotoxicity and tubulin polymerization inhibition assays. Other modifications are detrimental for the potency of the studied analogues. The 2-naphthyl combretastatin 53 and the related 6-quinolyl combretastatin 106 analogues are the most potent among the derivatives of this type, whereas 92 and 95 are the most potent among the naphthalene derivatives with a heterocycle in the bridge. Previous and new results in this family of combretastatin analogues are discussed.
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Affiliation(s)
- Manuel Medarde
- Laboratorio de Química Orgánica y Farmacéutica, Facultad de Farmacia, Universidad de Salamanca, Campus Miguel de Unamuno, Salamanca, Spain.
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Srivastava V, Negi AS, Kumar JK, Gupta MM, Khanuja SPS. Plant-based anticancer molecules: a chemical and biological profile of some important leads. Bioorg Med Chem 2005; 13:5892-908. [PMID: 16129603 DOI: 10.1016/j.bmc.2005.05.066] [Citation(s) in RCA: 244] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2005] [Revised: 05/27/2005] [Accepted: 05/31/2005] [Indexed: 11/23/2022]
Abstract
A number of natural products, with diverse chemical structures, have been isolated as anticancer agents. Several potential lead molecules such as camptothecin, vincristine, vinblastine, taxol, podophyllotoxin, combretastatins, etc. have been isolated from plants and many of them have been modified to yield better analogues for activity, toxicity or solubility. Several successful molecules like topotecan, irinotecan, taxotere, etoposide, teniposide, etc. also have emerged as drugs upon modification of these natural leads and many more are yet to come. In this review, the authors have focused on four important anticancer leads, that is, camptothecin, taxol, combretastatin A-4 and podophyllotoxin. Their chemistry, structure and activity relationships, biological activities, modes of action, analogue synthesis and future prospects have been discussed.
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Affiliation(s)
- Vandana Srivastava
- Central Institute of Medicinal and Aromatic Plants (CIMAP), P.O. CIMAP, Lucknow 226 015, Uttar Pradesh, India
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Gaukroger K, Hadfield JA, Lawrence NJ, Nolan S, McGown AT. Structural requirements for the interaction of combretastatins with tubulin: how important is the trimethoxy unit? Org Biomol Chem 2003; 1:3033-7. [PMID: 14518125 DOI: 10.1039/b306878a] [Citation(s) in RCA: 116] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of combretastatins possessing both a trimethoxy unit and other substituents on ring A has been synthesised and tested for cytotoxicity and their ability to interact with the protein tubulin. All previous studies have indicated that the trimethoxy unit is essential for interaction with tubulin. The studies herein show that molecules possessing functionalities other than trimethoxy can also interact with tubulin. Importantly a trimethyl substituted agent 52a has shown reduced cytotoxicity, but increased potency in its ability to inhibit the assembly of tubulin.
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Affiliation(s)
- Keira Gaukroger
- Drug Development Section, Paterson Institute for Cancer Research, Christie Hospital NHS Trust, Wilmslow Road, Manchester, M20 4BX
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Jordan A, Hadfield JA, Lawrence NJ, McGown AT. Tubulin as a target for anticancer drugs: agents which interact with the mitotic spindle. Med Res Rev 1998; 18:259-96. [PMID: 9664292 DOI: 10.1002/(sici)1098-1128(199807)18:4<259::aid-med3>3.0.co;2-u] [Citation(s) in RCA: 496] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Tubulin is the biochemical target for several clinically used anticancer drugs, including paclitaxel and the vinca alkaloids vincristine and vinblastine. This review describes both the natural and synthetic agents which are known to interact with tubulin. Syntheses of the more complex agents are referenced and the potential clinical use of the compounds is discussed. This review describes the biochemistry of tubulin, microtubules, and the mitotic spindle. The agents are discussed in relation to the type of binding site on the protein with which they interact. These are the colchicine, vinca alkaloid, rhizoxin/maytansine, and tubulin sulfhydryl binding sites. Also included are the agents which either bind at other sites or unknown sites on tubulin. The literature is reviewed up to October 1997.
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Affiliation(s)
- A Jordan
- Department of Chemistry, University of Manchester Institute of Science and Technology, UK
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Bedford SB, Quarterman CP, Rathbone DL, Slack JA, Griffin RJ, Stevens MFG. Synthesis of water-soluble prodrugs of the cytotoxic agent Combretastatin A4. Bioorg Med Chem Lett 1996. [DOI: 10.1016/0960-894x(95)00580-m] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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