1
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Jeong M, Yoo S. FetoML: Interpretable predictions of the fetotoxicity of drugs based on machine learning approaches. Mol Inform 2024; 43:e202300312. [PMID: 38850133 DOI: 10.1002/minf.202300312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 02/16/2024] [Accepted: 03/03/2024] [Indexed: 06/10/2024]
Abstract
Pregnant females may use medications to manage health problems that develop during pregnancy or that they had prior to pregnancy. However, using medications during pregnancy has a potential risk to the fetus. Assessing the fetotoxicity of drugs is essential to ensure safe treatments, but the current process is challenged by ethical issues, time, and cost. Therefore, the need for in silico models to efficiently assess the fetotoxicity of drugs has recently emerged. Previous studies have proposed successful machine learning models for fetotoxicity prediction and even suggest molecular substructures that are possibly associated with fetotoxicity risks or protective effects. However, the interpretation of the decisions of the models on fetotoxicity prediction for each drug is still insufficient. This study constructed machine learning-based models that can predict the fetotoxicity of drugs while providing explanations for the decisions. For this, permutation feature importance was used to identify the general features that the model made significant in predicting the fetotoxicity of drugs. In addition, features associated with fetotoxicity for each drug were analyzed using the attention mechanism. The predictive performance of all the constructed models was significantly high (AUROC: 0.854-0.974, AUPR: 0.890-0.975). Furthermore, we conducted literature reviews on the predicted important features and found that they were highly associated with fetotoxicity. We expect that our model will benefit fetotoxicity research by providing an evaluation of fetotoxicity risks for drugs or drug candidates, along with an interpretation of that prediction.
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Affiliation(s)
- Myeonghyeon Jeong
- Department of Intelligent Electronics and Computer Engineering, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Sunyong Yoo
- Department of Intelligent Electronics and Computer Engineering, Chonnam National University, Gwangju, 61186, Republic of Korea
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2
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El-Mernissi R, Khaldan A, Bouamrane S, Rehman HM, Alaqarbeh M, Ajana MA, Lakhlifi T, Bouachrine M. 3D-QSAR, molecular docking, simulation dynamic and ADMET studies on new quinolines derivatives against colorectal carcinoma activity. J Biomol Struct Dyn 2024; 42:3682-3699. [PMID: 37227776 DOI: 10.1080/07391102.2023.2214233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 05/10/2023] [Indexed: 05/27/2023]
Abstract
Cancer is the uncontrolled spread of abnormal cells that results in abnormal tissue growth in the affected organ. One of the most important organs is exposed to the growth of colon cancer cells, which start in the large intestine (colon) or the rectum. Several therapeutic protocols were used to treat different kinds of cancer. Recently, several studies have targeted tubulin and microtubules due to their remarkable prefoliation. Also, recent research shows that quinoline compounds have significant efficacy against human colorectal cancer. So, the present work investigated the potential of thirty quinoline compounds as tubulin inhibitors using computational methods. A 3D-QSAR approach using two contours (CoMFA and CoMSIA), molecular docking simulation to determine the binding type of the complexes (ligand-receptor), molecular dynamics simulation and identifying pharmacokinetic characteristics were used to design molecules. For all compounds designed (T1-5), molecular docking was used to compare the stability by type of binding. The ADMET has been utilized for molecules with good stability in molecular docking (T1-3); these compounds have good medicinal characteristics. Furthermore, a molecular dynamics simulation (MD) at 100 ns was performed to confirm the stability of the T1-3 compounds; the molecules (T1-3) remained the most stable throughout the simulation. The compounds T1, T2 and T3 are the best-designed drugs for colorectal carcinoma treatments.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Reda El-Mernissi
- Molecular Chemistry and Natural Substances Laboratory, Faculty of Science, University Moulay Ismail, Meknes, Morocco
| | - Ayoub Khaldan
- Molecular Chemistry and Natural Substances Laboratory, Faculty of Science, University Moulay Ismail, Meknes, Morocco
| | - Soukaina Bouamrane
- Molecular Chemistry and Natural Substances Laboratory, Faculty of Science, University Moulay Ismail, Meknes, Morocco
| | | | | | - Mohammed Aziz Ajana
- Molecular Chemistry and Natural Substances Laboratory, Faculty of Science, University Moulay Ismail, Meknes, Morocco
| | - Tahar Lakhlifi
- Molecular Chemistry and Natural Substances Laboratory, Faculty of Science, University Moulay Ismail, Meknes, Morocco
| | - Mohammed Bouachrine
- Molecular Chemistry and Natural Substances Laboratory, Faculty of Science, University Moulay Ismail, Meknes, Morocco
- EST Khenifra, Sultan Moulay Sliman University, Beni mellal, Morocco
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3
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Özalp GR, Üstüner B, Avci G, Bari Ö, Yılmaz MM, Denk B, Aktar A. Vincristine-associated total antioxidant and oxidant status of ovaries and in vitro nuclear oocyte maturation in dogs with canine transmissible venereal tumor. Anim Reprod Sci 2023; 253:107260. [PMID: 37196377 DOI: 10.1016/j.anireprosci.2023.107260] [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: 01/09/2023] [Revised: 05/12/2023] [Accepted: 05/13/2023] [Indexed: 05/19/2023]
Abstract
The aim of this study is to evaluate the effects of scheduled vincristine sulfate therapy on canine oocyte quality and nuclear oocyte maturation, associated with total antioxidant and oxidant status of ovaries and Anti-Müllerian Hormone (AMH) concentrations in dogs with Canine Transmissible Venereal Tumor (CTVT). Six bitches suffering from CTVT and six healthy bitches were included in the study. Hemogram was carried out weekly. AMH measurements and ovariohysterectomy operations were performed after the termination of vincristine sulfate therapies. Tissue samples from ovaries were utilized for Malondialdehyde (MDA), reduced Glutathione (GSH), Superoxide Dismutase (SOD), Total Anti-oxidative Status (TAS), Total Oxidative Status (TOS) measurements, and Oxidative Stress Index (OSI) was calculated. Collected oocytes were evaluated for meiotic competence, after In Vitro Maturation (IVM) and parthenogenetic activation. No difference between the two groups was observed in hematologic parameters (P > 0.05). Meiotic stages of Germinal Vesicle Break Down (GVBD), Metaphase I (MI), and Metaphase II (MII) were significantly different between groups (P < 0.05). The number of oocytes reaching MII and meiotic resumption was lower in the CTVT group. Furthermore, AMH concentrations, oxidant parameters (OSI, TOS, and MDA), and antioxidant parameters (GSH, SOD, and TAS) were also statistically different between groups (P < 0.05). The results of this study show that vincristine sulfate application in the treatment of CTVT could alter oxidant/antioxidant status in ovaries. Apart from these, oocyte quality and IVM rates seem to decline related to gonadotoxicity. Moreover, AMH could be an important marker in the evaluation of oocyte qualities in bitches, as it is in women.
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Affiliation(s)
- G R Özalp
- Department of Obstetrics and Gynecology, Faculty of Veterinary Medicine, Bursa Uludag University, Bursa, Turkey.
| | - B Üstüner
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Bursa Uludag University, Bursa, Turkey
| | - G Avci
- Department of Biochemistry, Faculty of Veterinary Medicine, Afyon Kocatepe University, Afyonkarahisar, Turkey
| | - Ö Bari
- Department of Obstetrics and Gynecology, Faculty of Veterinary Medicine, Bursa Uludag University, Bursa, Turkey
| | - M M Yılmaz
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Bursa Uludag University, Bursa, Turkey
| | - B Denk
- Department of Biochemistry, Faculty of Veterinary Medicine, Afyon Kocatepe University, Afyonkarahisar, Turkey
| | - A Aktar
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Bursa Uludag University, Bursa, Turkey
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4
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Hammouda MM, Elmaaty AA, Nafie MS, Abdel-Motaal M, Mohamed NS, Tantawy MA, Belal A, Alnajjar R, Eldehna WM, Al‐Karmalawy AA. Design and synthesis of novel benzoazoninone derivatives as potential CBSIs and apoptotic inducers: In Vitro, in Vivo, molecular docking, molecular dynamics, and SAR studies. Bioorg Chem 2022; 127:105995. [DOI: 10.1016/j.bioorg.2022.105995] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 06/17/2022] [Accepted: 06/26/2022] [Indexed: 12/15/2022]
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5
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Hagras M, El Deeb MA, Elzahabi HSA, Elkaeed EB, Mehany ABM, Eissa IH. Discovery of new quinolines as potent colchicine binding site inhibitors: design, synthesis, docking studies, and anti-proliferative evaluation. J Enzyme Inhib Med Chem 2021; 36:640-658. [PMID: 33588683 PMCID: PMC7889231 DOI: 10.1080/14756366.2021.1883598] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 12/26/2020] [Accepted: 01/25/2021] [Indexed: 01/03/2023] Open
Abstract
Discovering of new anticancer agents with potential activity against tubulin polymerisation is still a promising approach. Colchicine binding site inhibitors are the most relevant anti-tubulin polymerisation agents. Thus, new quinoline derivatives have been designed and synthesised to possess the same essential pharmacophoric features of colchicine binding site inhibitors. The synthesised compounds were tested in vitro against a panel of three human cancer cell lines (HepG-2, HCT-116, and MCF-7) using colchicine as a positive control. Comparing to colchicine (IC50 = 7.40, 9.32, and 10.41 µM against HepG-2, HCT-116, and MCF-7, respectively), compounds 20, 21, 22, 23, 24, 25, 26, and 28 exhibited superior cytotoxic activities with IC50 values ranging from 1.78 to 9.19 µM. In order to sightsee the proposed mechanism of anti-proliferative activity, the most active members were further evaluated in vitro for their inhibitory activities against tubulin polymerisation. Compounds 21 and 32 exhibited the highest tubulin polymerisation inhibitory effect with IC50 values of 9.11 and 10.5 nM, respectively. Such members showed activities higher than that of colchicine (IC50 = 10.6 nM) and CA-4 (IC50 = 13.2 nM). The impact of the most promising compound 25 on cell cycle distribution was assessed. The results revealed that compound 25 can arrest the cell cycle at G2/M phase. Annexin V and PI double staining assay was carried out to explore the apoptotic effect of the synthesised compounds. Compound 25 induced apoptotic effect on HepG-2 thirteen times more than the control cells. To examine the binding pattern of the target compounds against the tubulin heterodimers active site, molecular docking studies were carried out.
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Affiliation(s)
- Mohamed Hagras
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy (Boys), Al-Azhar University, Cairo, Egypt
| | - Moshira A. El Deeb
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy (Girls), Al-Azhar University, Cairo, Egypt
| | - Heba S. A. Elzahabi
- Department of Pharmaceutical Medicinal Chemistry & Drug Design, Faculty of Pharmacy (Girls), Al-Azhar University, Cairo, Egypt
| | - Eslam B. Elkaeed
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy (Boys), Al-Azhar University, Cairo, Egypt
- Department of Pharmaceutical Sciences, College of Pharmacy, AlMaarefa University, Ad Diriyah, Riyadh, Saudi Arabia
| | - Ahmed B. M. Mehany
- Department of Zoology, Faculty of Science, Al-Azhar University, Cairo, Egypt
| | - Ibrahim H. Eissa
- Department of Pharmaceutical Medicinal Chemistry & Drug Design, Faculty of Pharmacy (Boys), Al-Azhar University, Cairo, Egypt
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6
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Wong T, Narayanan S, Brown DP, Chen ZS. Synthesis and Cytotoxicity Studies of Stilbene Long-Chain Fatty Acid Conjugates. JOURNAL OF NATURAL PRODUCTS 2020; 83:1563-1570. [PMID: 32243160 DOI: 10.1021/acs.jnatprod.0c00027] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A series of 16 conjugates of the tubulin polymerization inhibitor combretastatin A4 (CA-4) and other functionally related stilbene with four 18-carbon fatty acids, namely, stearic, oleic, linoleic, and linolenic acids, have been synthesized in good yields. These new derivatives have been evaluated against the KB-3-1 (human epidermoid carcinoma), NCI-H460 (human lung cancer), HEK293 (human embryonic kidney), and MCF-7 (human breast adenocarcinoma) cell lines for antiproliferative activity, with the exhibited cytotoxic activities comparable with those of CA-4 and colchicine. Compounds 22 and 23, CA-4 conjugates of linoleic and linolenic acids, respectively, were determined to have exhibited the most active in vitro assays, with compound 23 exhibiting very similar activity to the parent compound against the NCI-H460 cell line. Our studies further delineated the structurally required Z-geometry of the stilbene moiety and that conjugation of the less active E-stilbenes with the most active fatty acid had minimal or no improvement in their respective activities.
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Affiliation(s)
- Thomas Wong
- Department of Pharmaceutical Sciences, St. John's University, 8000 Utopia Parkway, Queens, New York 11439, United States
| | - Silpa Narayanan
- Department of Pharmaceutical Sciences, St. John's University, 8000 Utopia Parkway, Queens, New York 11439, United States
| | - David P Brown
- Department of Chemistry, St. John's University, 8000 Utopia Parkway, Queens, New York 11439, United States
| | - Zhe-Sheng Chen
- Department of Pharmaceutical Sciences, St. John's University, 8000 Utopia Parkway, Queens, New York 11439, United States
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7
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Mori M, Manetti F, Botta B, Tafi A. In Memory of Maurizio Botta: His Contribution to the Development of Computer-Aided Drug Design. J Chem Inf Model 2019; 59:4961-4967. [PMID: 31804073 DOI: 10.1021/acs.jcim.9b01043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mattia Mori
- Department of Biotechnology, Chemistry and Pharmacy, Department of Excellence 2018-2022 , University of Siena , via Aldo Moro 2 , 53100 Siena , Italy
| | - Fabrizio Manetti
- Department of Biotechnology, Chemistry and Pharmacy, Department of Excellence 2018-2022 , University of Siena , via Aldo Moro 2 , 53100 Siena , Italy
| | - Bruno Botta
- Department of Chemistry and Technology of Drugs, Department of Excellence 2018-2022 , Sapienza University of Rome , Piazzale Aldo Moro 5 , 00185 Rome , Italy
| | - Andrea Tafi
- Department of Biotechnology, Chemistry and Pharmacy, Department of Excellence 2018-2022 , University of Siena , via Aldo Moro 2 , 53100 Siena , Italy
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8
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AbdElhameid MK, Labib MB, Negmeldin AT, Al-Shorbagy M, Mohammed MR. Design, synthesis, and screening of ortho-amino thiophene carboxamide derivatives on hepatocellular carcinomaas VEGFR-2Inhibitors. J Enzyme Inhib Med Chem 2018; 33:1472-1493. [PMID: 30191744 PMCID: PMC6136361 DOI: 10.1080/14756366.2018.1503654] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 06/21/2018] [Accepted: 07/16/2018] [Indexed: 12/26/2022] Open
Abstract
In this work, design, synthesis, and screening of thiophene carboxamides 4-13 and 16-23 as dual vascular endothelial growth factor receptors (VEGFRs) and mitotic inhibitors was reported. All compounds were screened against two gastrointestinal solid cancer cells, HepG-2 and HCT-116 cell lines. The most active cytotoxic derivatives 5 and 21 displayed 2.3- and 1.7-fold higher cytotoxicity than Sorafenib against HepG-2 cells. Cell cycle and apoptosis analyses for compounds 5 and 21 showed cells accumulation in the sub-G1 phase, and cell cycle arrest at G2/M phase. The apoptotic inducing activities of compounds 5 and 21were correlated to the elevation of p53, increase in Bax/Bcl-2 ratio, and increase in caspase-3/7.Compounds 5 and 21 showed potent inhibition againstVEGFR-2 (IC50 = 0.59 and 1.29 μM) and β-tubulin polymerization (73% and 86% inhibition at their IC50 values).Molecular docking was performed with VEGFR-2 and tubulin binding sites to explain the displayed inhibitory activities.
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Affiliation(s)
- Mohammed K. AbdElhameid
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Madlen B. Labib
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt
| | - Ahmed T. Negmeldin
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt
- Department of Pharmaceutical Sciences College of Pharmacy, Gulf Medical University, Gulf Medical University, Ajman, UAE
| | - Muhammad Al-Shorbagy
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt
- Pharmacology and Toxicology Department, School of Pharmacy, NewGiza University, Egypt
| | - Manal R. Mohammed
- Department of Radiation Biology, National Center for Radiation Research and Technology, Cairo, Egypt
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9
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Abdelbaset MS, Abuo-Rahma GEDA, Abdelrahman MH, Ramadan M, Youssif BG, Bukhari SNA, Mohamed MF, Abdel-Aziz M. Novel pyrrol-2(3H)-ones and pyridazin-3(2H)-ones carrying quinoline scaffold as anti-proliferative tubulin polymerization inhibitors. Bioorg Chem 2018; 80:151-163. [DOI: 10.1016/j.bioorg.2018.06.003] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Revised: 05/31/2018] [Accepted: 06/01/2018] [Indexed: 10/14/2022]
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10
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Abd elhameid MK, Ryad N, MY AS, mohammed MR, Ismail MM, El Meligie S. Design, Synthesis and Screening of 4,6-Diaryl Pyridine and Pyrimidine Derivatives as Potential Cytotoxic Molecules. Chem Pharm Bull (Tokyo) 2018; 66:939-952. [DOI: 10.1248/cpb.c18-00269] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | - Noha Ryad
- Pharmaceutical Organic Chemistry Department, College of Pharmaceutical Sciences and Drug Manufacturing, Misr University for Science and Technology
| | - Al-Shorbagy MY
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Cairo University
- School of pharmacy, Newgiza University
| | - Manal R. mohammed
- Department of Radiation Biology, National Center for Radiation Research and Technology
| | - Mohammed M. Ismail
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Cairo University
- Pharmaceutical Organic Chemistry Department, College of Pharmaceutical Sciences and Drug Manufacturing, Misr University for Science and Technology
| | - Salwa El Meligie
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Cairo University
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11
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Microtubins: a novel class of small synthetic microtubule targeting drugs that inhibit cancer cell proliferation. Oncotarget 2017; 8:104007-104021. [PMID: 29262617 PMCID: PMC5732783 DOI: 10.18632/oncotarget.21945] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Accepted: 09/16/2017] [Indexed: 11/25/2022] Open
Abstract
Microtubule targeting drugs like taxanes, vinca alkaloids, and epothilones are widely-used and effective chemotherapeutic agents that target the dynamic instability of microtubules and inhibit spindle functioning. However, these drugs have limitations associated with their production, solubility, efficacy and unwanted toxicities, thus driving the need to identify novel antimitotic drugs that can be used as anticancer agents. We have discovered and characterized the Microtubins (Microtubule inhibitors), a novel class of small synthetic compounds, which target tubulin to inhibit microtubule polymerization, arrest cancer cells predominantly in mitosis, activate the spindle assembly checkpoint and trigger an apoptotic cell death. Importantly, the Microtubins do not compete for the known vinca or colchicine binding sites. Additionally, through chemical synthesis and structure-activity relationship studies, we have determined that specific modifications to the Microtubin phenyl ring can activate or inhibit its bioactivity. Combined, these data define the Microtubins as a novel class of compounds that inhibit cancer cell proliferation by perturbing microtubule polymerization and they could be used to develop novel cancer therapeutics.
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12
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El-Meligie S, Taher AT, Kamal AM, Youssef A. Design, synthesis and cytotoxic activity of certain novel chalcone analogous compounds. Eur J Med Chem 2017; 126:52-60. [DOI: 10.1016/j.ejmech.2016.09.099] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 09/29/2016] [Accepted: 09/30/2016] [Indexed: 10/20/2022]
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13
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Marzo-Mas A, Barbier P, Breuzard G, Allegro D, Falomir E, Murga J, Carda M, Peyrot V, Marco JA. Interactions of long-chain homologues of colchicine with tubulin. Eur J Med Chem 2016; 126:526-535. [PMID: 27915168 DOI: 10.1016/j.ejmech.2016.11.049] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 11/21/2016] [Accepted: 11/22/2016] [Indexed: 01/30/2023]
Abstract
Several colchicine analogues in which the N-acetyl residue has been replaced by aliphatic, straight-chain acyl moieties, have been synthesized. These compounds show high cytotoxic activity at the nanomolar level against the tumoral cell lines HT-29, MCF-7 and A549. Some of them exhibit activities in the picomolar range against the HT-29 line and are thus two to three orders of magnitude more cytotoxic than colchicine. In this specific cell line, the activities were found to be closely related to the length of the acyl carbon chain, an increase in the latter giving rise to an increase in the cytotoxicity with a maximum in the range of 10-12 carbon atoms, followed by a decrease in activity with still longer chains. Some of the compounds inhibit microtubule assembly and induce the formation of abnormal polymers and present in most cases better apparent affinity constants than colchicine. In addition, at IC50 concentrations the analogues block the cell cycle of A549 cells in the G2/M phase. Molecular docking studies suggest that, while interactions of the colchicine analogues with the colchicine binding site at β-tubulin are still present, the increase in the acyl chain length leads to the progressive development of new interactions, not present in colchicine itself, with the neighboring α-tubulin subunit. Indeed, sufficiently long acyl chains span the intradimer interface and contact with a hydrophobic groove in α-tubulin. It is worth noting that some of the compounds show cytotoxicity at concentrations three orders of magnitude lower than colchicine. Their pharmacological use in cancer therapy could possibly be performed with lower dosages and be thus endowed with less acute toxicity problems than in the case of colchicine.
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Affiliation(s)
- Ana Marzo-Mas
- Depart. de Q. Inorgánica y Orgánica, Univ. Jaume I, E-12071 Castellón, Spain
| | - Pascale Barbier
- Aix-Marseille Université, Inserm, CRO2 UMR_S 911, Faculté de Pharmacie, 13385, Marseille, France
| | - Gilles Breuzard
- Aix-Marseille Université, Inserm, CRO2 UMR_S 911, Faculté de Pharmacie, 13385, Marseille, France
| | - Diane Allegro
- Aix-Marseille Université, Inserm, CRO2 UMR_S 911, Faculté de Pharmacie, 13385, Marseille, France
| | - Eva Falomir
- Depart. de Q. Inorgánica y Orgánica, Univ. Jaume I, E-12071 Castellón, Spain
| | - Juan Murga
- Depart. de Q. Inorgánica y Orgánica, Univ. Jaume I, E-12071 Castellón, Spain.
| | - Miguel Carda
- Depart. de Q. Inorgánica y Orgánica, Univ. Jaume I, E-12071 Castellón, Spain
| | - Vincent Peyrot
- Aix-Marseille Université, Inserm, CRO2 UMR_S 911, Faculté de Pharmacie, 13385, Marseille, France.
| | - J Alberto Marco
- Depart. de Q. Orgánica, Univ. de Valencia, E-46100 Burjassot, Valencia, Spain
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14
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Ahmed RI, Osman EEA, Awadallah FM, El-Moghazy SM. Design, synthesis and molecular docking of novel diarylcyclohexenone and diarylindazole derivatives as tubulin polymerization inhibitors. J Enzyme Inhib Med Chem 2016; 32:176-188. [PMID: 27771966 PMCID: PMC6009925 DOI: 10.1080/14756366.2016.1244532] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
New target compounds were designed as inhibitors of tubulin polymerization relying on using two types of ring B models (cyclohexenone and indazole) to replace the central ring in colchicine. Different functional groups (R1) were attached to manipulate their physicochemical properties and/or their biological activity. The designed compounds were assessed for their antitumor activity on HCT-116 and MCF-7 cancer cell lines. Compounds 4b, 5e and 5f exhibited comparable or higher potency than colchicine against colon HCT-116 and MCF-7 tumor cells. The mechanism of the antitumor activity was investigated through evaluating the tubulin inhibition potential of the active compounds. Compounds 4b, 5e and 5f showed percentage inhibition of tubulin in both cell line homogenates ranging from 79.72% to 89.31%. Cell cycle analysis of compounds 4b, 5e and 5f revealed cell cycle arrest at G2/M phase. Molecular docking revealed the binding mode of these new compounds into the colchicine binding site of tubulin.
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Affiliation(s)
- Riham I Ahmed
- a Department of Pharmaceutical Chemistry, Faculty of Pharmacy , Nahda University in Beni Suef , Kornish Al Nile , Beni Suef , Egypt
| | - Essam Eldin A Osman
- b Department of Pharmaceutical Chemistry, Faculty of Pharmacy , Cairo University , Cairo , Egypt
| | - Fadi M Awadallah
- b Department of Pharmaceutical Chemistry, Faculty of Pharmacy , Cairo University , Cairo , Egypt
| | - Samir M El-Moghazy
- b Department of Pharmaceutical Chemistry, Faculty of Pharmacy , Cairo University , Cairo , Egypt
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15
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Elmeligie S, Khalil NA, Ahmed EM, Emam SH, Zaitone SAB. Synthesis of New N1-Substituted-5-aryl-3-(3,4,5-trimethoxyphenyl)-2-pyrazoline Derivatives as Antitumor Agents Targeting the Colchicine Site on Tubulin. Biol Pharm Bull 2016; 39:1611-1622. [DOI: 10.1248/bpb.b16-00277] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Salwa Elmeligie
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Cairo University
| | - Nadia Abdalla Khalil
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Cairo University
| | - Eman Mohamed Ahmed
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Cairo University
| | - Soha Hussein Emam
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Cairo University
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16
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Mahal K, Ahmad A, Sethi S, Resch M, Ficner R, Sarkar FH, Schobert R, Biersack B. Role of JNK and NF-κB in mediating the effect of combretastatin A-4 and brimamin on endothelial and carcinoma cells. Cell Oncol (Dordr) 2015; 38:463-78. [PMID: 26358135 DOI: 10.1007/s13402-015-0243-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/28/2015] [Indexed: 10/23/2022] Open
Abstract
PURPOSE The 4,5-diarylimidazole brimamin is an analog of the natural vascular-disrupting agent combretastatin A-4 (CA-4) with improved water solubility, tolerance by animals and efficacy in multidrug-resistant tumors. Here, we aimed at identifying the major mechanisms underlying the in vitro and in vivo actions of brimamin on endothelial and carcinoma cells, including vascularization. METHODS The contribution of specific signaling kinases to the effects of brimamin on cytoskeleton organization and the viability and differentiation of endothelial cells was assessed by MTT and tube formation assays in the presence or absence of specific kinase inhibitors. Changes in DNA affinity and expression of NF-κB in endothelial and carcinoma-derived cells and their solid tumors (xenografts) treated with brimamin were ascertained by electrophoretic mobility shift assays and Western blotting. The anti-vascular effect of brimamin in solid tumors was verified by CD31 immunostaining. RESULTS We found that brimamin can inhibit tubulin polymerization and cause a reorganization of F-actin in Ea.hy926 endothelial cells. Its inhibitory effect on tube formation was found to depend on functional Rho kinase and JNK. JNK inhibition was found to suppress the induction of endothelial cell apoptosis by brimamin. In CA-4-refractory human BxPC-3 pancreas carcinoma-derived and triple-negative MDA-MB-231 breast carcinoma-derived cells brimamin was found to inhibit growth and to induce apoptosis at low nanomolar concentrations by blocking NF-κB activation in a dose-dependent manner. Brimamin was also found to reduce the in vivo growth rate and vascularization of MDA-MB-231 xenografts in mice. Residual tumor cells of these treated xenografts showed a relatively low expression of the p65 subunit of NF-κB. CONCLUSIONS Our data indicate that cellular JNK and Rho kinase activities are crucial for the cytotoxic and cytoskeleton reorganizing effects of brimamin on endothelial cells. In addition, we found that in resistant carcinoma cells and xenografts brimamin can induce down-regulation of anti-apoptotic NF-κB expression and signaling. Its chemical properties and efficacy against clinically relevant cancer entities make brimamin a promising candidate vascular-disrupting agent.
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Affiliation(s)
- Katharina Mahal
- Organic Chemistry Laboratory, University Bayreuth, Universitaetsstrasse 30, 95440, Bayreuth, Germany
| | - Aamir Ahmad
- Karmanos Cancer Institute, Department of Pathology, Wayne State University School of Medicine, 4100 John R. Street, Detroit, 48201, MI, USA
| | - Seema Sethi
- Karmanos Cancer Institute, Department of Pathology, Wayne State University School of Medicine, 4100 John R. Street, Detroit, 48201, MI, USA
| | - Marcus Resch
- Department of Molecular Structural Biology, Georg-August-University Göttingen, Justus-von-Liebig-Weg 11, 37077, Göttingen, Germany
| | - Ralf Ficner
- Department of Molecular Structural Biology, Georg-August-University Göttingen, Justus-von-Liebig-Weg 11, 37077, Göttingen, Germany
| | - Fazlul H Sarkar
- Karmanos Cancer Institute, Department of Pathology, Wayne State University School of Medicine, 4100 John R. Street, Detroit, 48201, MI, USA
| | - Rainer Schobert
- Organic Chemistry Laboratory, University Bayreuth, Universitaetsstrasse 30, 95440, Bayreuth, Germany.
| | - Bernhard Biersack
- Organic Chemistry Laboratory, University Bayreuth, Universitaetsstrasse 30, 95440, Bayreuth, Germany
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17
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Torijano-Gutiérrez S, Vilanova C, Díaz-Oltra S, Murga J, Falomir E, Carda M, Redondo-Horcajo M, Díaz JF, Barasoain I, Marco JA. The Mechanism of the Interactions of Pironetin Analog/Combretastatin A-4 Hybrids with Tubulin. Arch Pharm (Weinheim) 2015; 348:541-7. [PMID: 26085125 DOI: 10.1002/ardp.201500106] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Revised: 04/27/2015] [Accepted: 05/06/2015] [Indexed: 12/20/2022]
Abstract
We here report an investigation of the interactions with tubulin of two types of molecules of a hybrid structural type consisting in a combretastatin A-4 moiety and a simplified pironetin fragment. The cytotoxicities of the molecules on two reference tumoral cell lines were measured. In addition, the effects of the compounds on the cell cycle and on microtubule assembly were observed. The dynamics of microtubule polymerization was investigated by means of immunofluorescence assays. It was thus established that at least some of the compounds under study exert their cytotoxic action by means of interaction with tubulin.
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Affiliation(s)
| | - Concepción Vilanova
- Departamento de Química Inorgánica y Orgánica, Universidad Jaume I, Castellón, Spain
| | - Santiago Díaz-Oltra
- Departamento de Química Inorgánica y Orgánica, Universidad Jaume I, Castellón, Spain
| | - Juan Murga
- Departamento de Química Inorgánica y Orgánica, Universidad Jaume I, Castellón, Spain
| | - Eva Falomir
- Departamento de Química Inorgánica y Orgánica, Universidad Jaume I, Castellón, Spain
| | - Miguel Carda
- Departamento de Química Inorgánica y Orgánica, Universidad Jaume I, Castellón, Spain
| | | | | | | | - Juan Alberto Marco
- Departamento de Química Orgánica, Universidad Valencia, Burjassot, Spain
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18
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Vilanova C, Díaz-Oltra S, Murga J, Falomir E, Carda M, Redondo-Horcajo M, Díaz JF, Barasoain I, Marco JA. Design and synthesis of pironetin analogue/colchicine hybrids and study of their cytotoxic activity and mechanisms of interaction with tubulin. J Med Chem 2014; 57:10391-403. [PMID: 25426924 DOI: 10.1021/jm501112q] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
We here report the synthesis of a series of 12 hybrid molecules composed of a colchicine moiety and a pironetin analogue fragment. The two fragments are connected through an ester-amide spacer of variable length. The cytotoxic activities of these compounds and their interactions with tubulin have been investigated. Relations between the structure and activity are discussed. Since the spacer is not long enough to permit a simultaneous binding of the hybrid molecules to the colchicine and pironetin sites on tubulin, a further feature investigated was whether these molecules would interact with the latter through the pironetin end (irreversible covalent binding) or through the colchicine end (reversible noncovalent binding). It has been found that binding to tubulin may take place preferentially at either of these ends depending on the length of the connecting spacer.
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Affiliation(s)
- Concepción Vilanova
- Departament de Química Inorgànica i Orgànica, Universitat Jaume I , E-12071 Castellón de la Plana, Castellón, Spain
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19
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KUNDU SOMA, KIM TAEHYUNG, YOON JUNGHYUN, SHIN HANSEUNG, LEE JAEWON, JUNG JEEH, KIM HYUNGSIK. Viriditoxin regulates apoptosis and autophagy via mitotic catastrophe and microtubule formation in human prostate cancer cells. Int J Oncol 2014; 45:2331-40. [DOI: 10.3892/ijo.2014.2659] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Accepted: 08/04/2014] [Indexed: 11/05/2022] Open
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20
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Vilanova C, Torijano-Gutiérrez S, Díaz-Oltra S, Murga J, Falomir E, Carda M, Alberto Marco J. Design and synthesis of pironetin analogue/combretastatin A-4 hybrids containing a 1,2,3-triazole ring and evaluation of their cytotoxic activity. Eur J Med Chem 2014; 87:125-30. [PMID: 25240870 DOI: 10.1016/j.ejmech.2014.09.053] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Revised: 09/12/2014] [Accepted: 09/14/2014] [Indexed: 12/20/2022]
Abstract
We here describe the preparation of a series of hybrid molecules containing a combretastatin A-4 moiety and a pironetin analogue fragment connected through a spacer of variable length which includes a 1,2,3-triazole ring. The cytotoxic activities of these compounds have been measured. Relations between structure and cytotoxicity are discussed. Some of the tested compounds showed cytotoxicity values of the same order of magnitude as combretastatin A-4 and were less toxic than the latter compound for normal cells.
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Affiliation(s)
- Concepción Vilanova
- Depart. de Q. Inorgánica y Orgánica, Univ. Jaume I, E-12071 Castellón, Spain
| | | | - Santiago Díaz-Oltra
- Depart. de Q. Inorgánica y Orgánica, Univ. Jaume I, E-12071 Castellón, Spain
| | - Juan Murga
- Depart. de Q. Inorgánica y Orgánica, Univ. Jaume I, E-12071 Castellón, Spain.
| | - Eva Falomir
- Depart. de Q. Inorgánica y Orgánica, Univ. Jaume I, E-12071 Castellón, Spain
| | - Miguel Carda
- Depart. de Q. Inorgánica y Orgánica, Univ. Jaume I, E-12071 Castellón, Spain
| | - J Alberto Marco
- Depart. de Q. Orgánica, Univ. de Valencia, E-46100 Burjassot, Valencia, Spain.
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21
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Paños J, Díaz-Oltra S, Sánchez-Peris M, García-Pla J, Murga J, Falomir E, Carda M, Redondo-Horcajo M, Díaz JF, Barasoain I, Marco JA. Synthesis and biological evaluation of truncated α-tubulin-binding pironetin analogues lacking alkyl pendants in the side chain or the dihydropyrone ring. Org Biomol Chem 2014; 11:5809-26. [PMID: 23892508 DOI: 10.1039/c3ob40854j] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The preparation of several new truncated analogues of the natural dihydropyrone pironetin is described. They differ from the natural product mainly in the suppression of some of the alkyl pendants in either the side chain or the dihydropyrone ring. Their cytotoxic activity and their interactions with tubulin have been investigated. It has been found that all analogues are cytotoxic towards two either sensitive or resistant tumoral cell lines with similar IC50 values in each case, thus strongly suggesting that, like natural pironetin, they also display a covalent mechanism of action. Their cytotoxicity is, however, lower than that of the parent compound. This indicates that all alkyl pendants are necessary for the full biological activity, with the ethyl group at C-4 seemingly being particularly relevant. Most likely, the alkyl groups cause a restriction in the conformational mobility of the molecule and reduce the number of available conformations. This makes it more probable that the molecule preferentially adopts a shape which fits better into the binding point in α-tubulin.
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Affiliation(s)
- Julián Paños
- Depart. de Q. Inorgánica y Orgánica, Univ. Jaume I, Castellón, E-12071 Castellón, Spain.
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22
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Torijano-Gutiérrez S, Vilanova C, Díaz-Oltra S, Murga J, Falomir E, Carda M, Marco JA. Design and Synthesis of Pironetin Analogue/Combretastatin A-4 Hybrids and Evaluation of Their Cytotoxic Activity. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301725] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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23
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Magalhães HI, Wilke DV, Bezerra DP, Cavalcanti BC, Rotta R, de Lima DP, Beatriz A, Moraes MO, Diniz-Filho J, Pessoa C. (4-Methoxyphenyl)(3,4,5-trimethoxyphenyl)methanone inhibits tubulin polymerization, induces G2/M arrest, and triggers apoptosis in human leukemia HL-60 cells. Toxicol Appl Pharmacol 2013; 272:117-26. [DOI: 10.1016/j.taap.2013.06.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2013] [Revised: 05/16/2013] [Accepted: 06/02/2013] [Indexed: 10/26/2022]
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24
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Cytotoxic 3,4,5-trimethoxychalcones as mitotic arresters and cell migration inhibitors. Eur J Med Chem 2013; 63:501-10. [PMID: 23524161 DOI: 10.1016/j.ejmech.2013.02.037] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2012] [Revised: 02/22/2013] [Accepted: 02/25/2013] [Indexed: 12/28/2022]
Abstract
Based on classical colchicine site ligands and a computational model of the colchicine binding site on beta tubulin, two classes of chalcone derivatives were designed, synthesized and evaluated for inhibition of tubulin assembly and toxicity in human cancer cell lines. Docking studies suggested that the chalcone scaffold could fit the colchicine site on tubulin in an orientation similar to that of the natural product. In particular, a 3,4,5-trimethoxyphenyl ring adjacent to the carbonyl group appeared to benefit the ligand-tubulin interaction, occupying the same subcavity as the corresponding moiety in colchicine. Consistent with modeling predictions, several 3,4,5-trimethoxychalcones showed improved cytotoxicity to murine acute lymphoblastic leukemia cells compared with a previously described parent compound, and inhibited tubulin assembly in vitro as potently as colchicine. The most potent chalcones inhibited the growth of human leukemia cell lines at nanomolar concentrations, caused microtubule destabilization and mitotic arrest in human cervical cancer cells, and inhibited human breast cancer cell migration in scratch wound and Boyden chamber assays.
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25
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Carda M, Murga J, Díaz-Oltra S, García-Pla J, Paños J, Falomir E, Trigili C, Díaz JF, Barasoain I, Marco JA. Synthesis and Biological Evaluation of α-Tubulin-Binding Pironetin Analogues with Enhanced Lipophilicity. European J Org Chem 2013. [DOI: 10.1002/ejoc.201201283] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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26
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Kandeel MM, Kamal AM, Abdelall EKA, Elshemy HAH. Synthesis of novel chromene derivatives of expected antitumor activity. Eur J Med Chem 2012; 59:183-93. [PMID: 23220647 DOI: 10.1016/j.ejmech.2012.11.011] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Revised: 11/06/2012] [Accepted: 11/11/2012] [Indexed: 11/19/2022]
Abstract
Inhibition of tubulin polymerization is one of the important tactics in cancer therapy. Since 4-aryl-4H-chromene derivatives are found to be microtubule-binding agents via interfering with tubulin polymerization so we decide to concentrate our exploration efforts on the combination of this nucleus with 5-, 6-, and/or 7-memebered heterocyclic moieties in a novel series of compounds to explore the effect that might result from this combination. Ten novel compounds were selected for anticancer screening assay against MCF-7 breast cancer cell line in comparison to colchicine as positive control and most of them showed excellent activity.
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Affiliation(s)
- Manal M Kandeel
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo 11561 Egypt
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27
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Mur Blanch N, Chabot GG, Quentin L, Scherman D, Bourg S, Dauzonne D. In vitro and in vivo biological evaluation of new 4,5-disubstituted 1,2,3-triazoles as cis-constrained analogs of combretastatin A4. Eur J Med Chem 2012; 54:22-32. [PMID: 22647220 DOI: 10.1016/j.ejmech.2012.04.017] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2011] [Revised: 04/11/2012] [Accepted: 04/12/2012] [Indexed: 11/17/2022]
Abstract
To find new and better antivascular agents for cancer therapy, a series of combretastatin A4 (CA4) analogs were prepared from 1,3-diaryl-2-nitroprop-1-enes (6-12) obtained in a two-step synthesis from appropriate arylaldehydes and 2-aryl-1-nitroethanes (4 or 5). Treatment of these 1,3-diaryl-2-nitroprop-1-enes 6-12 by sodium azide in DMSO yielded the targeted compounds. The synthesized 1,2,3-triazoles disubstituted in 4- and 5-positions by one benzyl group and one aryl nucleus have also been tested for biological activities involved in antivascular action. It was found that several new compounds exhibited interesting biological activities in the nanomolar or low micromolar range, in terms of rounding up of endothelial cells, inhibition of tubulin polymerization, and cytotoxicity on B16 melanoma cancer cells. In silico docking studies of 11 and 19 within the active site of tubulin were also carried out in order to rationalize the inhibitory properties of these compounds and further understand their inhibition mechanism. In vivo evaluation of compounds 11 and 19 in mice bearing colon 26 carcinoma indicated modest anticancer activity.
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Affiliation(s)
- Núria Mur Blanch
- Institut Curie, Centre de Recherche, 26 rue d'Ulm, F-75005 Paris, France
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28
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Beale TM, Allwood DM, Bender A, Bond PJ, Brenton JD, Charnock-Jones DS, Ley SV, Myers RM, Shearman JW, Temple J, Unger J, Watts CA, Xian J. A-ring dihalogenation increases the cellular activity of combretastatin-templated tetrazoles. ACS Med Chem Lett 2012; 3:177-81. [PMID: 24900453 DOI: 10.1021/ml200149g] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2011] [Accepted: 01/19/2012] [Indexed: 11/28/2022] Open
Abstract
The combretastatins have been investigated for their antimitotic and antivascular properties, and it is widely postulated that a 3,4,5-trimethoxyaryl A-ring is essential to maintain potent activity. We have synthesized new tetrazole analogues (32-34), demonstrating that 3,5-dihalogenation can consistently increase potency by up to 5-fold when compared to the equivalent trimethoxy compound on human umbilical vein endothelial cells (HUVECs) and a range of cancer cells. Moreover, this increased potency offsets that lost by installing the tetrazole bridge into combretastatin A-4 (1), giving crystalline, soluble compounds that have low nanomolar activity, arrest cells in G2/M phase, and retain microtubule inhibitory activity. Molecular modeling has shown that optimized packing within the binding site resulting in increased Coulombic interaction may be responsible for this improved activity.
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Affiliation(s)
- Thomas M. Beale
- Department of Chemistry, Lensfield
Road, University of Cambridge, Cambridge
CB2 1EW, U.K
| | - Daniel M. Allwood
- Department of Chemistry, Lensfield
Road, University of Cambridge, Cambridge
CB2 1EW, U.K
| | - Andreas Bender
- Unilever
Centre for Molecular
Science Informatics, Lensfield Road, University of Cambridge, Cambridge CB2 1EW, U.K
| | - Peter J. Bond
- Unilever
Centre for Molecular
Science Informatics, Lensfield Road, University of Cambridge, Cambridge CB2 1EW, U.K
| | - James D. Brenton
- Functional Genomics of Ovarian
Cancer Laboratory, Cancer Research U.K., Cambridge Research Institute, Li Ka Shing Centre, Robinson Way, Cambridge
CB2 0RE, U.K
| | - D. Stephen Charnock-Jones
- Department
of Obstetrics and
Gynaecology, University of Cambridge, and
National Institute for Health Research, Cambridge Comprehensive Biomedical
Research Centre, Cambridge CB2 0SW, U.K
| | - Steven V. Ley
- Department of Chemistry, Lensfield
Road, University of Cambridge, Cambridge
CB2 1EW, U.K
| | - Rebecca M. Myers
- Department of Chemistry, Lensfield
Road, University of Cambridge, Cambridge
CB2 1EW, U.K
| | - James W. Shearman
- Department of Chemistry, Lensfield
Road, University of Cambridge, Cambridge
CB2 1EW, U.K
| | - Jill Temple
- Functional Genomics of Ovarian
Cancer Laboratory, Cancer Research U.K., Cambridge Research Institute, Li Ka Shing Centre, Robinson Way, Cambridge
CB2 0RE, U.K
| | - Jessica Unger
- Functional Genomics of Ovarian
Cancer Laboratory, Cancer Research U.K., Cambridge Research Institute, Li Ka Shing Centre, Robinson Way, Cambridge
CB2 0RE, U.K
| | - Ciorsdaidh A. Watts
- Department of Chemistry, Lensfield
Road, University of Cambridge, Cambridge
CB2 1EW, U.K
| | - Jian Xian
- Functional Genomics of Ovarian
Cancer Laboratory, Cancer Research U.K., Cambridge Research Institute, Li Ka Shing Centre, Robinson Way, Cambridge
CB2 0RE, U.K
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29
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Design and synthesis of pironetin analogues with simplified structure and study of their interactions with microtubules. Eur J Med Chem 2011; 46:1630-7. [PMID: 21396747 DOI: 10.1016/j.ejmech.2011.02.011] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2010] [Revised: 01/29/2011] [Accepted: 02/08/2011] [Indexed: 11/22/2022]
Abstract
The preparation of a series of pironetin analogues with simplified structure is described. Their cytotoxic activity and their interactions with tubulin have been investigated. It has been found that, while less active than the parent molecule, the pironetin analogues still share the mechanism of action of the latter and compete for the same binding site to α-tubulin. Variations in the configurations of their stereocenters do not translate into relevant differences between biological activities.
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