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Jeon KH, Park S, Shin JH, Jung AR, Hwang SY, Seo SH, Jo H, Na Y, Kwon Y. Synthesis and evaluation of 7-(3-aminopropyloxy)-substituted flavone analogue as a topoisomerase IIα catalytic inhibitor and its sensitizing effect to enzalutamide in castration-resistant prostate cancer cells. Eur J Med Chem 2023; 246:114999. [PMID: 36493620 DOI: 10.1016/j.ejmech.2022.114999] [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: 11/21/2022] [Accepted: 11/30/2022] [Indexed: 12/12/2022]
Abstract
Prostate cancer patients primarily receive androgen receptor (AR)-targeted drugs as a primary treatment option because prostate cancer is associated with highly activated AR signaling. AR amplification made prostate cancer cells viable under treatment of AR-targeted therapy, leading to castration resistance. AR amplification was more common in enzalutamide-resistant patients. As a strategy to overcome castration resistance and to improve the efficacy of enzalutamide, second-generation nonsteroidal antiandrogen drugs for castration-resistant prostate cancer (CRPC) including topoisomerase II (topo II) poisons such as etoposide and mitoxantrone, have been administered in combination with enzalutamide. In the present study, it was confirmed that amplification of topo IIα, but not I and IIβ, was directly and proportionally associated with poor clinical outcome of Prostate cancer. Among a novel series of newly designed and synthesized 7-(3-aminopropyloxy)-substituted flavone analogues, compound 6, the most potent derivative, was further characterized and identified as a topo IIα catalytic inhibitor that intercalates into DNA and binds to the DNA minor groove with better efficacy and less genotoxicity than etoposide, a topo II poison. Compound 6 showed remarkable efficacy in inhibiting AR-negative CRPC cell growth and sensitizing activity to enzalutamide in AR-positive CRPC cells, thus confirming the potential of topo IIα catalytic inhibitor to overcome resistance to androgen deprivation therapy.
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Affiliation(s)
- Kyung-Hwa Jeon
- College of Pharmacy, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Republic of Korea
| | - Seojeong Park
- College of Pharmacy, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Republic of Korea
| | - Jae-Ho Shin
- College of Pharmacy, CHA University, 120 Haeryong-ro, Pochon-shi, Gyeongghi-do, 11160, Republic of Korea
| | - Ah-Reum Jung
- College of Pharmacy, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Republic of Korea
| | - Soo-Yeon Hwang
- College of Pharmacy, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Republic of Korea
| | - Seung Hee Seo
- College of Pharmacy, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Republic of Korea
| | - Hyunji Jo
- College of Pharmacy, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Republic of Korea
| | - Younghwa Na
- College of Pharmacy, CHA University, 120 Haeryong-ro, Pochon-shi, Gyeongghi-do, 11160, Republic of Korea
| | - Youngjoo Kwon
- College of Pharmacy, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Republic of Korea.
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Li B, Zhu J, Zheng X, Ti W, Huang Y, Yao H. Rh(III)-Catalyzed Oxidative C-H Activation/Annulation of Salicylaldehydes with Masked Enynes for the Synthesis of Chromones. J Org Chem 2023; 88:548-558. [PMID: 36538035 DOI: 10.1021/acs.joc.2c02557] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A rhodium(III)-catalyzed oxidative C-H activation/annulation of salicylaldehydes with propargylic acetates has been developed for the regioselective synthesis of 3-vinyl chromones in good yields with broad functional group tolerance. 3-Vinyl chromones were converted into biologically active benzo[c]xanthone by I2-mediated oxidative electrocyclization.
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Affiliation(s)
- Bo Li
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Jianping Zhu
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Xia Zheng
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Wenqing Ti
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Yue Huang
- Department of Organic Chemistry, School of Science, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Hequan Yao
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, P. R. China
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Synthesis, Characterization and Anticancer Efficacy Evaluation of Benzoxanthone Compounds toward Gastric Cancer SGC-7901. Molecules 2022; 27:molecules27061970. [PMID: 35335332 PMCID: PMC8949258 DOI: 10.3390/molecules27061970] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 03/08/2022] [Accepted: 03/14/2022] [Indexed: 02/04/2023] Open
Abstract
Three benzoxanthone derivatives were synthesized through a new photochemical strategy. The in vitro cytotoxic activity of these compounds was evaluated by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, and their partition coefficients (logP) were measured by shake flask method. The pKa values of the compounds were detected by potentionmetric titration. The interaction of the compounds with calf thymus DNA (CT-DNA) was investigated by electronic absorption, luminescence spectra and viscosity. A molecular docking analysis was performed. The antitumor efficacy of the compounds was evaluated by cell apoptosis, cell cycle arrest, intracellular Ca2+ concentrations and reactive oxygen species (ROS) levels. The mitochondrial membrane potential was assayed using JC-1 (5,5′,6,6′-tetrachloro-1,1,3′,3′-tetraethyl-imidacarbocyanine iodide) as the fluorescence probe. The expression of Bcl-2 family protein, caspase 3 and poly ADP-ribose polymerase (PARP) was explored by western blot. The results showed that the compounds induced apoptosis through a ROS-mediated mitochondrial dysfunction pathway. This work provides an efficient approach to synthesize benzoxanthone derivatives, and is helpful for understanding the apoptotic mechanism.
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Navale V, Vamkudoth KR, Ajmera S, Dhuri V. Aspergillus derived mycotoxins in food and the environment: Prevalence, detection, and toxicity. Toxicol Rep 2021; 8:1008-1030. [PMID: 34408970 PMCID: PMC8363598 DOI: 10.1016/j.toxrep.2021.04.013] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 04/20/2021] [Accepted: 04/27/2021] [Indexed: 12/16/2022] Open
Abstract
Aspergillus species are the paramount ubiquitous fungi that contaminate various food substrates and produce biochemicals known as mycotoxins. Aflatoxins (AFTs), ochratoxin A (OTA), patulin (PAT), citrinin (CIT), aflatrem (AT), secalonic acids (SA), cyclopiazonic acid (CPA), terrein (TR), sterigmatocystin (ST) and gliotoxin (GT), and other toxins produced by species of Aspergillus plays a major role in food and human health. Mycotoxins exhibited wide range of toxicity to the humans and animal models even at nanomolar (nM) concentration. Consumption of detrimental mycotoxins adulterated foodstuffs affects human and animal health even trace amounts. Bioaerosols consisting of spores and hyphal fragments are active elicitors of bronchial irritation and allergy, and challenging to the public health. Aspergillus is the furthermost predominant environmental contaminant unswervingly defile lives with a 40-90 % mortality risk in patients with conceded immunity. Genomics, proteomics, transcriptomics, and metabolomics approaches useful for mycotoxins' detection which are expensive. Antibody based detection of toxins chemotypes may result in cross-reactivity and uncertainty. Aptamers (APT) are single stranded DNA (ssDNA/RNA), are specifically binds to the target molecules can be generated by systematic evolution of ligands through exponential enrichment (SELEX). APT are fast, sensitive, simple, in-expensive, and field-deployable rapid point of care (POC) detection of toxins, and a better alternative to antibodies.
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Affiliation(s)
- Vishwambar Navale
- Biochemical Sciences Division, CSIR-National Chemical Laboratory, Pune, 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Anusandhan Bhawan, New Delhi, India
| | - Koteswara Rao Vamkudoth
- Biochemical Sciences Division, CSIR-National Chemical Laboratory, Pune, 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Anusandhan Bhawan, New Delhi, India
| | | | - Vaibhavi Dhuri
- Biochemical Sciences Division, CSIR-National Chemical Laboratory, Pune, 411008, India
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Jo H, Hee Seo S, Na Y, Kwon Y. The synthesis and anticancer activities of chiral epoxy-substituted chromone analogs. Bioorg Chem 2018; 84:347-354. [PMID: 30530076 DOI: 10.1016/j.bioorg.2018.11.054] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 11/24/2018] [Accepted: 11/29/2018] [Indexed: 12/25/2022]
Abstract
Human DNA topoisomerases (topos) have been recognized as a good target molecule for the development of anticancer drugs because they play an important role in solving DNA topological problems caused by DNA strand separation during replication and transcription. In this study, we designed and synthesized 11 novel chromone backbone compounds possessing epoxy and halohydrin substituents with chirality. In the topos inhibition test, compounds 2, 9, 10, and 11 showed comparable topo I inhibitory activity at concentration of 100 μM compared to camptothecin, and all of the synthesized compounds showed moderate topo IIα inhibitory activity. Among them, compounds 9, 10 and 11 were more potent than the others in both topo I and IIα inhibitory activity. Compound 11 showed the most potent cell antiproliferative activity against all tested cancer cell lines with particularly strong inhibition (an IC50 of 0.04 µM) of K562 myelogenous leukemia cancer cell proliferation. In the brief structure-activity relationship analysis, there was no clear correlation between stereochemistry and topos inhibitory and cytotoxic activity. 5(R),7(S)-bisepoxy-substituted compound 11 was the most potent DNA cross-linker and induced G2/M arrest in a cell cycle assay in a dose- and time-dependent manner. After the treatment time period induced apoptosis in K562 cells without increasing G2/M-phase cells. Overall, compound 11 showed good consistent inhibitory biological activity related to cancer cell proliferation.
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Affiliation(s)
- Hyunji Jo
- College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 120-750, Republic of Korea
| | - Seung Hee Seo
- College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 120-750, Republic of Korea
| | - Younghwa Na
- College of Pharmacy, CHA University, Pocheon 487-010, Republic of Korea.
| | - Youngjoo Kwon
- College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 120-750, Republic of Korea.
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6
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Chae SW, Lee J, Park JH, Kwon Y, Na Y, Lee HJ. Intestinal P-glycoprotein inhibitors, benzoxanthone analogues. ACTA ACUST UNITED AC 2017; 70:234-241. [PMID: 29238994 DOI: 10.1111/jphp.12832] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 09/21/2017] [Indexed: 01/01/2023]
Abstract
OBJECTIVES The inhibitors of P-glycoprotein (P-gp) which limits an access of exogenous compounds in the luminal membrane of the intestine have been studied to enhance the intestinal P-gp-mediated absorption of anticancer drugs. METHODS Inhibition of the efflux pump by synthesized benzoxanthone derivatives was investigated in vitro and in vivo. MCF-7/ADR cell line was used for cytotoxicity assay and [3 H]-daunomycin (DNM) accumulation/efflux study. Eight benzoxanthone analogues were tested for their effects on DNM cytotoxicity. Among them, three analogues were selected for the accumulation/efflux and P-gp ATPase studies. Paclitaxel (PTX), a P-gp substrate anticancer drug, was orally administered to rats with/without compound 1 (8,10-bis(thiiran-2-ylmethoxy)-7H-benzo[c]xanthen-7-one). The pharmacokinetic parameters of PTX in the presence/absence of compound 1 were evaluated from the plasma concentration-time profiles. KEY-FINDINGS Compound 1 increased the DNA accumulation to 6.5-fold and decreased the DNM efflux to approximately 1/2 in the overexpressing P-gp cell line. Relative bioavailability (RB) of PTX in rats was significantly increased up to 3.2-fold by compound 1 (0.5 or 2 mg/kg). CONCLUSIONS Benzoxanthone analogue, compound 1 is strongly suggested to be a promising inhibitor of P-gp to improve an oral absorption of compounds for cancer therapy.
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Affiliation(s)
- Song Wha Chae
- Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul, Korea
| | - Jaeok Lee
- Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul, Korea
| | - Jung Hyun Park
- Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul, Korea
| | - Youngjoo Kwon
- Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul, Korea
| | - Younghwa Na
- College of Pharmacy, CHA University, Pocheon, Korea
| | - Hwa Jeong Lee
- Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul, Korea
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Santos CMM, Pinto DCGA, Silva VLM, Silva AMS. Arylxanthones and arylacridones: a synthetic overview. PURE APPL CHEM 2016. [DOI: 10.1515/pac-2016-0407] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
AbstractArylxanthones and arylacridones although not yet found in nature are becoming an important group of heterocyclic compounds due to their promising biological activities. Their central cores, xanthone and acridone, are recognized as interesting motifs for drug development mainly to be used in antitumour chemotherapy. The synthesis of this type of compounds is still scarce but several successful examples were recently published and a large variety of arylated xanthone and acridone derivatives were prepared. A systematic survey of the literature dedicated to their synthesis will be presented and discussed in this review.
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Affiliation(s)
- Clementina M. M. Santos
- 1Department of Chemistry and QOPNA, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
- 2School of Agriculture, Polytechnic Institute of Bragança, 5300-253 Bragança, Portugal
| | - Diana C. G. A. Pinto
- 1Department of Chemistry and QOPNA, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Vera L. M. Silva
- 1Department of Chemistry and QOPNA, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Artur M. S. Silva
- 1Department of Chemistry and QOPNA, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
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8
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Yang ZM, Huang J, Qin JK, Dai ZK, Lan WL, Su GF, Tang H, Yang F. Design, synthesis and biological evaluation of novel 1-hydroxyl-3-aminoalkoxy xanthone derivatives as potent anticancer agents. Eur J Med Chem 2014; 85:487-97. [DOI: 10.1016/j.ejmech.2014.07.076] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 07/21/2014] [Accepted: 07/21/2014] [Indexed: 10/25/2022]
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Alam S, Khan F. QSAR and docking studies on xanthone derivatives for anticancer activity targeting DNA topoisomerase IIα. DRUG DESIGN DEVELOPMENT AND THERAPY 2014; 8:183-95. [PMID: 24516330 PMCID: PMC3916431 DOI: 10.2147/dddt.s51577] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Due to the high mortality rate in India, the identification of novel molecules is important in the development of novel and potent anticancer drugs. Xanthones are natural constituents of plants in the families Bonnetiaceae and Clusiaceae, and comprise oxygenated heterocycles with a variety of biological activities along with an anticancer effect. To explore the anticancer compounds from xanthone derivatives, a quantitative structure activity relationship (QSAR) model was developed by the multiple linear regression method. The structure-activity relationship represented by the QSAR model yielded a high activity-descriptors relationship accuracy (84%) referred by regression coefficient (r(2)=0.84) and a high activity prediction accuracy (82%). Five molecular descriptors - dielectric energy, group count (hydroxyl), LogP (the logarithm of the partition coefficient between n-octanol and water), shape index basic (order 3), and the solvent-accessible surface area - were significantly correlated with anticancer activity. Using this QSAR model, a set of virtually designed xanthone derivatives was screened out. A molecular docking study was also carried out to predict the molecular interaction between proposed compounds and deoxyribonucleic acid (DNA) topoisomerase IIα. The pharmacokinetics parameters, such as absorption, distribution, metabolism, excretion, and toxicity, were also calculated, and later an appraisal of synthetic accessibility of organic compounds was carried out. The strategy used in this study may provide understanding in designing novel DNA topoisomerase IIα inhibitors, as well as for other cancer targets.
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Affiliation(s)
- Sarfaraz Alam
- Metabolic and Structural Biology Department, Central Institute of Medicinal and Aromatic Plants, Council of Scientific and Industrial Research, Lucknow, Uttar Pradesh, India
| | - Feroz Khan
- Metabolic and Structural Biology Department, Central Institute of Medicinal and Aromatic Plants, Council of Scientific and Industrial Research, Lucknow, Uttar Pradesh, India
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10
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He Y, Zhang X, Shen N, Fan X. Tunable Synthesis of 3-Acyl-2-naphthols and 3-Substituted Isocoumarins via Jones Reagent Promoted Cascade Reactions of 2-(4-Hydroxy-but-1-ynyl)benzaldehydes. J Org Chem 2013; 78:10178-91. [DOI: 10.1021/jo401502k] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Yan He
- School of Environment,
Key Laboratory for Yellow River and Huai River Water Environment and
Pollution Control, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, PR China
- School of Chemistry
and Chemical Engineering, Key Laboratory of Green Chemical Media and
Reactions, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, PR China
| | - Xinying Zhang
- School of Chemistry
and Chemical Engineering, Key Laboratory of Green Chemical Media and
Reactions, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, PR China
| | - Nana Shen
- School of Chemistry
and Chemical Engineering, Key Laboratory of Green Chemical Media and
Reactions, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, PR China
| | - Xuesen Fan
- School of Environment,
Key Laboratory for Yellow River and Huai River Water Environment and
Pollution Control, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, PR China
- School of Chemistry
and Chemical Engineering, Key Laboratory of Green Chemical Media and
Reactions, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, PR China
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11
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Nam JM, Jeon KH, Kwon H, Lee E, Jun KY, Jin YB, Lee YS, Na Y, Kwon Y. Dithiiranylmethyloxy azaxanthone shows potent anti-tumor activity via suppression of HER2 expression and HER2-mediated signals in HER2-overexpressing breast cancer cells. Eur J Pharm Sci 2013; 50:181-90. [PMID: 23835029 DOI: 10.1016/j.ejps.2013.06.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2013] [Revised: 06/25/2013] [Accepted: 06/28/2013] [Indexed: 01/27/2023]
Abstract
Dithiiranylmethyloxy azaxanthone (CHO10), which was discovered by screening compounds in a reporter gene assay, inhibited the ESX-Sur2 interaction in a dose-dependent manner with potency similar to canertinib. The intervention of CHO10 during the ESX-Sur2 interaction caused down-regulation of both HER2 gene amplification and HER2 protein expression, which led to the attenuation of HER2-mediated downstream signal cascades and autocrine cell growth in SK-BR-3 cells, which are HER2 overexpressing breast cancer cells. The cell growth inhibitory activity of CHO10 was more potent in HER2-overexpressing breast cancer cells (AU-565, BT474 and SK-BR-3) than in HER2-negative cells (HEK293) and breast cancer cells (MCF-7) that express a basal level of HER2. Treatment with CHO10 in combination with tamoxifen sensitized BT474 cells, tamoxifen-resistant ER-positive breast cancer cell line, toward chemotherapeutic. The anti-tumor activity of CHO10 was validated by the significant reduction in tumor size of NCI-H460 or DLD-1 subcutaneously implanted xenograft tumors through treatment with 1mg/kg five times every other 2days.
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Affiliation(s)
- Jung Min Nam
- College of Pharmacy, Graduate School of Pharmaceutical Sciences, Global Top5 Research Program, Ewha Womans University, Seoul 120-750, Republic of Korea
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12
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Chalcones, inhibitors for topoisomerase I and cathepsin B and L, as potential anti-cancer agents. Bioorg Med Chem Lett 2013; 23:3320-4. [DOI: 10.1016/j.bmcl.2013.03.106] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Revised: 03/20/2013] [Accepted: 03/23/2013] [Indexed: 11/18/2022]
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13
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Singh S, Baviskar AT, Jain V, Mishra N, Chand Banerjee U, Bharatam PV, Tikoo K, Singh Ishar MP. 3-Formylchromone based topoisomerase IIα inhibitors: discovery of potent leads. MEDCHEMCOMM 2013. [DOI: 10.1039/c3md00125c] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Cheng M, Yan J, Hu F, Chen H, Hu Y. Palladium-catalyzed cascade reactions of 3-iodochromones with aryl iodides and norbornadiene leading to annulated xanthones. Chem Sci 2013. [DOI: 10.1039/c2sc21335d] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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15
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Bailly C. Contemporary challenges in the design of topoisomerase II inhibitors for cancer chemotherapy. Chem Rev 2012; 112:3611-40. [PMID: 22397403 DOI: 10.1021/cr200325f] [Citation(s) in RCA: 213] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Christian Bailly
- Centre de Recherche et Développement, Institut de Recherche Pierre Fabre, Toulouse, France.
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16
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Hong R. Secalonic acid D as a novel DNA topoisomerase I inhibitor from marine lichen-derived fungus Gliocladium sp. T31. PHARMACEUTICAL BIOLOGY 2011; 49:796-799. [PMID: 21495809 DOI: 10.3109/13880209.2010.548817] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
CONTEXT DNA topoisomerase I (topo I) is an essential enzyme which regulates the conformational changes in DNA topology by cleaving and rejoining DNA strands during normal cell growth. The inhibitors of topo I represent a major class of anticancer drugs. In our projects to isolate new anticancer agents from marine-derived fungi, secalonic acid D (SAD) with inhibitory activity on topo I was isolated from the fermentation broth of marine lichen-derived fungus Gliocladium sp. T31, which was collected from marine sediments in South Pole. OBJECTIVE The inhibitory activity of SAD on topo I was investigated for the first time. MATERIALS AND METHODS The inhibitory effect of SAD on topo I was determined via in vitro supercoil relaxation assays and electrophoretic mobility shift assay (EMSA) using plasmid substrate, pBR322. RESULTS SAD displays a considerable inhibition on topo I in a dose-dependent manner with the minimum inhibitory concentration (MIC) of 0.4 µM. Unlike the prototypic DNA topo I poison camptothecin (CPT), SAD inhibits the binding of topo I to DNA but does not induce the formation of topo I-DNA covalent complexes. DISCUSSION AND CONCLUSION SAD is an excellent topo I inhibitor and thus a significantly potential anticancer candidate.
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Affiliation(s)
- Ren Hong
- Beijing Key Laboratory of Plant Resource Research and Development, College of Chemical and Environmental Engineering, Beijing Technology and Business University, Beijing, China.
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17
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Cheng P, Zhu L, Guo W, Liu W, Yao J, Dong G, Zhang Y, Zhuang C, Sheng C, Miao Z, Zhang W. Synthesis of novel benzoxanthone analogues as non-Camptothecin topoisomerase I inhibitors. J Enzyme Inhib Med Chem 2011; 27:437-42. [DOI: 10.3109/14756366.2011.595712] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Pengfei Cheng
- School of Pharmacy, Second Military Medical University,
325 Guohe Road, Shanghai 200433, People’s Republic of China
| | - Lingjian Zhu
- School of Pharmacy, Second Military Medical University,
325 Guohe Road, Shanghai 200433, People’s Republic of China
| | - Wei Guo
- School of Pharmacy, Second Military Medical University,
325 Guohe Road, Shanghai 200433, People’s Republic of China
| | - Wenfeng Liu
- School of Pharmacy, Second Military Medical University,
325 Guohe Road, Shanghai 200433, People’s Republic of China
| | - Jianzhong Yao
- School of Pharmacy, Second Military Medical University,
325 Guohe Road, Shanghai 200433, People’s Republic of China
| | - Guoqiang Dong
- School of Pharmacy, Second Military Medical University,
325 Guohe Road, Shanghai 200433, People’s Republic of China
| | - Yongqiang Zhang
- School of Pharmacy, Second Military Medical University,
325 Guohe Road, Shanghai 200433, People’s Republic of China
| | - Chunlin Zhuang
- School of Pharmacy, Second Military Medical University,
325 Guohe Road, Shanghai 200433, People’s Republic of China
| | - Chunquan Sheng
- School of Pharmacy, Second Military Medical University,
325 Guohe Road, Shanghai 200433, People’s Republic of China
| | - Zhenyuan Miao
- School of Pharmacy, Second Military Medical University,
325 Guohe Road, Shanghai 200433, People’s Republic of China
| | - Wannian Zhang
- School of Pharmacy, Second Military Medical University,
325 Guohe Road, Shanghai 200433, People’s Republic of China
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Na Y, Nam JM. Synthesis and topoisomerase II inhibitory and cytotoxic activity of oxiranylmethoxy- and thiiranylmethoxy-chalcone derivatives. Bioorg Med Chem Lett 2011; 21:211-4. [DOI: 10.1016/j.bmcl.2010.11.037] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2010] [Revised: 10/20/2010] [Accepted: 11/04/2010] [Indexed: 10/18/2022]
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