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Hou W, Huang LJ, Huang H, Liu SL, Dai W, Li ZM, Zhang ZY, Xin SY, Wang JY, Zhang ZY, Ouyang X, Lan JX. Bioactivities and Mechanisms of Action of Diphyllin and Its Derivatives: A Comprehensive Systematic Review. Molecules 2023; 28:7874. [PMID: 38067601 PMCID: PMC10707837 DOI: 10.3390/molecules28237874] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 11/26/2023] [Accepted: 11/28/2023] [Indexed: 12/18/2023] Open
Abstract
Natural products are treasure houses for modern drug discovery. Diphyllin is a natural arylnaphthalene lignan lactone isolated from the leaf of Astilboides tabularis. Studies have found that it possesses plenty of bioactivity characteristics. In this paper, we reviewed the structure, bioactivity, and mechanism of action of diphyllin and its derivatives. The references were obtained from PubMed, Web of Science, and Science Direct databases up to August 2023. Papers without a bio-evaluation were excluded. Diphyllin and its derivatives have demonstrated V-ATPase inhibition, anti-tumor, anti-virus, anti-biofilm, anti-inflammatory, and anti-oxidant activities. The most studied activities of diphyllin and its derivatives are V-ATPase inhibition, anti-tumor activities, and anti-virus activities. Furthermore, V-ATPase inhibition activity is the mechanism of many bioactivities, including anti-tumor, anti-virus, and anti-inflammatory activities. We also found that the galactosylated modification of diphyllin is a common phenomenon in plants, and therefore, galactosylated modification is applied by researchers in the laboratory to obtain more excellent diphyllin derivatives. This review will provide useful information for the development of diphyllin-based anti-tumor and anti-virus compounds.
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Affiliation(s)
- Wen Hou
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, China; (W.H.); (H.H.); (S.-L.L.); (W.D.); (Z.-Y.Z.); (S.-Y.X.); (J.-Y.W.); (Z.-Y.Z.); (X.O.)
| | - Le-Jun Huang
- College of Rehabilitation, Gannan Medical University, Ganzhou 341000, China;
| | - Hao Huang
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, China; (W.H.); (H.H.); (S.-L.L.); (W.D.); (Z.-Y.Z.); (S.-Y.X.); (J.-Y.W.); (Z.-Y.Z.); (X.O.)
| | - Sheng-Lan Liu
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, China; (W.H.); (H.H.); (S.-L.L.); (W.D.); (Z.-Y.Z.); (S.-Y.X.); (J.-Y.W.); (Z.-Y.Z.); (X.O.)
| | - Wei Dai
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, China; (W.H.); (H.H.); (S.-L.L.); (W.D.); (Z.-Y.Z.); (S.-Y.X.); (J.-Y.W.); (Z.-Y.Z.); (X.O.)
| | - Zeng-Min Li
- Laboratory Animal Engineering Research Center of Ganzhou, Gannan Medical University, Ganzhou 341000, China;
| | - Zhen-Yu Zhang
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, China; (W.H.); (H.H.); (S.-L.L.); (W.D.); (Z.-Y.Z.); (S.-Y.X.); (J.-Y.W.); (Z.-Y.Z.); (X.O.)
| | - Su-Ya Xin
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, China; (W.H.); (H.H.); (S.-L.L.); (W.D.); (Z.-Y.Z.); (S.-Y.X.); (J.-Y.W.); (Z.-Y.Z.); (X.O.)
| | - Jin-Yang Wang
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, China; (W.H.); (H.H.); (S.-L.L.); (W.D.); (Z.-Y.Z.); (S.-Y.X.); (J.-Y.W.); (Z.-Y.Z.); (X.O.)
| | - Zi-Yun Zhang
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, China; (W.H.); (H.H.); (S.-L.L.); (W.D.); (Z.-Y.Z.); (S.-Y.X.); (J.-Y.W.); (Z.-Y.Z.); (X.O.)
| | - Xi Ouyang
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, China; (W.H.); (H.H.); (S.-L.L.); (W.D.); (Z.-Y.Z.); (S.-Y.X.); (J.-Y.W.); (Z.-Y.Z.); (X.O.)
| | - Jin-Xia Lan
- College of Public Health and Health Management, Gannan Medical University, Ganzhou 341000, China
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Yuan P, Liu R, Zhu HM, Liao Z, Xiang JC, Wu AX. An I 2-DMSO catalytic manifold enabled aromatization for C-ring editing of podophyllotoxone. Org Biomol Chem 2023; 21:6468-6473. [PMID: 37539709 DOI: 10.1039/d3ob00927k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
The precise aromatization of the C-ring of podophyllotoxone to access value-added dehydropodophyllotoxin derivatives conventionally requires the use of equivalent amounts of unsustainable oxidants and suffers from inefficiencies. Taking advantage of the hydridic character of the C8 and C8' of podophyllotoxone, we have developed an I2-DMSO catalytic manifold that enables a green and selective dehydrogenative aromatization to overcome these synthetic challenges. An unprecedented dehydrogenative amination of podophyllotoxone derivatives was also realized using aniline as the reaction partner.
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Affiliation(s)
- Peng Yuan
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China.
| | - Rui Liu
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China.
| | - Hui-Min Zhu
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China.
| | - Zhixin Liao
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China.
| | - Jia-Chen Xiang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China.
| | - An-Xin Wu
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China.
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Identification of a Family of Glycoside Derivatives Biologically Active against Acinetobacter baumannii and Other MDR Bacteria Using a QSPR Model. Pharmaceuticals (Basel) 2023. [DOI: 10.3390/ph16020250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023] Open
Abstract
As the rate of discovery of new antibacterial compounds for multidrug-resistant bacteria is declining, there is an urge for the search for molecules that could revert this tendency. Acinetobacter baumannii has emerged as a highly virulent Gram-negative bacterium that has acquired multiple resistance mechanisms against antibiotics and is considered of critical priority. In this work, we developed a quantitative structure-property relationship (QSPR) model with 592 compounds for the identification of structural parameters related to their property as antibacterial agents against A. baumannii. QSPR mathematical validation (R2 = 70.27, RN = −0.008, a(R2) = 0.014, and δK = 0.021) and its prediction ability (Q2LMO = 67.89, Q2EXT = 67.75, a(Q2) = −0.068, δQ = 0.0, rm2¯ = 0.229, and Δrm2 = 0.522) were obtained with different statistical parameters; additional validation was done using three sets of external molecules (R2 = 72.89, 71.64 and 71.56). We used the QSPR model to perform a virtual screening on the BIOFACQUIM natural product database. From this screening, our model showed that molecules 32 to 35 and 54 to 68, isolated from different extracts of plants of the Ipomoea sp., are potential antibacterials against A. baumannii. Furthermore, biological assays showed that molecules 56 and 60 to 64 have a wide antibacterial activity against clinically isolated strains of A. baumannii, as well as other multidrug-resistant bacteria, including Staphylococcus aureus, Escherichia coli, Klebsiella pneumonia, and Pseudomonas aeruginosa. Finally, we propose 60 as a potential lead compound due to its broad-spectrum activity and its structural simplicity. Therefore, our QSPR model can be used as a tool for the investigation and search for new antibacterial compounds against A. baumannii.
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Kim T, Kim YJ, Jeong KH, Park YT, Kwon H, Choi P, Ju HN, Yoon CH, Kim JY, Ham J. The efficient synthesis and biological evaluation of justicidin B. Nat Prod Res 2023; 37:56-62. [PMID: 34227447 DOI: 10.1080/14786419.2021.1948843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A facile new synthetic method for the preparation of a Type-A 1-arylnaphthalene lactone skeleton was developed and used to synthesise justicidin B and several derivatives. Key synthesis steps included Hauser-Kraus annulation of a phthalide intermediate and Suzuki-Miyaura cross coupling between a triflated naphthalene lactone intermediate and various potassium organotrifluoroborates. With two exceptions, the derivatives showed significant inhibitory effect on lipopolysaccharide (LPS)-induced nitric oxide (NO) production in mouse macrophages. Moreover, several compounds, including justicidin B, had marked cytotoxicity towards six human tumour cell lines.
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Affiliation(s)
- Taejung Kim
- Korea Institute of Science and Technology (KIST), Natural Products Research Institute, Gangneung, Republic of Korea
| | - Young-Joo Kim
- Korea Institute of Science and Technology (KIST), Natural Products Research Institute, Gangneung, Republic of Korea
| | - Kyu-Hyuk Jeong
- Korea Institute of Science and Technology (KIST), Natural Products Research Institute, Gangneung, Republic of Korea
| | - Young-Tae Park
- Korea Institute of Science and Technology (KIST), Natural Products Research Institute, Gangneung, Republic of Korea
| | - Hyukjoon Kwon
- Korea Institute of Science and Technology (KIST), Natural Products Research Institute, Gangneung, Republic of Korea
| | - Pilju Choi
- Korea Institute of Science and Technology (KIST), Natural Products Research Institute, Gangneung, Republic of Korea
| | - Ha-Neul Ju
- Korea Institute of Science and Technology (KIST), Natural Products Research Institute, Gangneung, Republic of Korea
| | - Cheol Hee Yoon
- Korea Institute of Science and Technology (KIST), Natural Products Research Institute, Gangneung, Republic of Korea
| | - Ji-Yool Kim
- Korea Institute of Science and Technology (KIST), Natural Products Research Institute, Gangneung, Republic of Korea.,Division of Bio-Medical Science & Technology, University of Science and Technology (UST), Daejeon, Republic of Korea
| | - Jungyeob Ham
- Korea Institute of Science and Technology (KIST), Natural Products Research Institute, Gangneung, Republic of Korea.,Division of Bio-Medical Science & Technology, University of Science and Technology (UST), Daejeon, Republic of Korea
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Synthesis and anti-tumor activity of nitrogen-containing derivatives of the natural product diphyllin. Eur J Med Chem 2022; 243:114708. [DOI: 10.1016/j.ejmech.2022.114708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 08/16/2022] [Accepted: 08/21/2022] [Indexed: 11/15/2022]
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Plescia CB, Lindstrom AR, Quintero MV, Keiser P, Anantpadma M, Davey R, Stahelin RV, Davisson VJ. Evaluation of Phenol-Substituted Diphyllin Derivatives as Selective Antagonists for Ebola Virus Entry. ACS Infect Dis 2022; 8:942-957. [PMID: 35357134 PMCID: PMC9112336 DOI: 10.1021/acsinfecdis.1c00474] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
Ebola
virus (EBOV) is an aggressive filoviral pathogen that can
induce severe hemorrhagic fever in humans with up to 90% fatality
rate. To date, there are no clinically effective small-molecule drugs
for postexposure therapies to treat filoviral infections. EBOV cellular
entry and infection involve uptake via macropinocytosis, navigation
through the endocytic pathway, and pH-dependent escape into the cytoplasm.
We report the inhibition of EBOV cell entry via selective inhibition
of vacuolar (V)-ATPase by a new series of phenol-substituted derivatives
of the natural product scaffold diphyllin. In cells challenged with
Ebola virus, the diphyllin derivatives inhibit viral entry dependent
upon structural variations to low nanomolar potencies. Mechanistically,
the diphyllin derivatives had no effect on uptake and colocalization
of viral particles with endocytic marker LAMP1 but directly modulated
endosomal pH. The most potent effects were reversible exhibiting higher
selectivity than bafilomycin or the parent diphyllin. Unlike general
lysosomotrophic agents, the diphyllin derivatives showed no major
disruptions of endocytic populations or morphology when examined with
Rab5 and LAMP1 markers. The dilated vacuole phenotype induced by apilimod
treatment or in constitutively active Rab5 mutant Q79L-expressing
cells was both blocked and reversed by the diphyllin derivatives.
The results are consistent with the action of the diphyllin scaffold
as a selective pH-dependent viral entry block in late endosomes. Overall,
the compounds show improved selectivity and minimal cytotoxicity relative
to classical endosomal acidification blocking agents.
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Affiliation(s)
| | | | - Maritza V. Quintero
- Department of Biochemistry and Structural Biology, University of Texas Health San Antonio, San Antonio 78229-3900, United States
| | - Patrick Keiser
- Department of Microbiology, National Emerging Infectious Diseases Laboratories, Boston University, Boston, Massachusetts 02118, United States
| | - Manu Anantpadma
- Department of Microbiology, National Emerging Infectious Diseases Laboratories, Boston University, Boston, Massachusetts 02118, United States
| | - Robert Davey
- Department of Microbiology, National Emerging Infectious Diseases Laboratories, Boston University, Boston, Massachusetts 02118, United States
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Wang Q, Lai M, Luo H, Ren K, Wang J, Huang N, Deng Z, Zou K, Yao H. Stereoselective O-Glycosylation of Glycals with Arylboronic Acids Using Air as the Oxygen Source. Org Lett 2022; 24:1587-1592. [DOI: 10.1021/acs.orglett.1c04378] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Qiuyuan Wang
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
| | - Mengnan Lai
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
| | - Huajun Luo
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
| | - Keke Ren
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
| | - Jingrui Wang
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
| | - Nianyu Huang
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
| | - Zhangshuang Deng
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
| | - Kun Zou
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
| | - Hui Yao
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
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8
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N B, K R C. Antiviral, Anticancer and Hypotensive Potential of Diphyllin Glycosides and their Mechanisms of Action. Mini Rev Med Chem 2022; 22:1752-1771. [PMID: 35040401 DOI: 10.2174/1389557522666220117122718] [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: 02/16/2021] [Revised: 08/16/2021] [Accepted: 11/16/2021] [Indexed: 11/22/2022]
Abstract
Diphyllin glycosides (DG) are the type of arylnaphthalene lignans isolated from different plants and their synthetic derivatives have shown effective antiviral, cytotoxic, hypotensive and diuretic effects at very low concentrations similar to standard drugs that are under clinical use. The biological activities of the DG interfere with signaling pathways of viral infection and cancer induction. The sugar moieties of DG enhance bioavailability and pharmacological activities. The promising results of DG at nanomolar concentrations under in vitro and in vivo conditions should be explored further with clinical trials to determine its toxic effects, pharmacokinetics and pharmacodynamics. This may identify suitable antiviral and anticancer drugs in the near future. Considering all these activities, the present review is focused on the chemical aspects of DG with a detailed account on the mechanisms of action of DG. An attempt is also made to comment on the status of clinical trials of DG along with the possible limitations in studies based on available literature through September 2020.
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Affiliation(s)
- Bhagya N
- Yenepoya Research Centre, Yenepoya (Deemed to be University), Deralakatte, Mangalore-575018, Karnataka, India
| | - Chandrashekar K R
- Yenepoya Research Centre, Yenepoya (Deemed to be University), Deralakatte, Mangalore-575018, Karnataka, India
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Martinez-Lopez A, Persaud M, Chavez MP, Zhang H, Rong L, Liu S, Wang TT, Sarafianos SG, Diaz-Griffero F. Glycosylated diphyllin as a broad-spectrum antiviral agent against Zika virus. EBioMedicine 2019; 47:269-283. [PMID: 31501074 PMCID: PMC6796538 DOI: 10.1016/j.ebiom.2019.08.060] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 08/24/2019] [Accepted: 08/24/2019] [Indexed: 11/27/2022] Open
Abstract
Background Flaviviruses such as Zika cause sporadic pandemic outbreaks worldwide. There is an urgent need for anti-Zika virus (ZIKV) drugs to prevent mother-to-child transmission of ZIKV, new infections in high-risk populations, and the infection of medical personnel in ZIKV-affected areas. Methods Here, we showed that the small molecule 6-deoxyglucose-diphyllin (DGP) exhibited anti-ZIKV activity both in vitro and in vivo. DGP potently blocked ZIKV infection across all human and monkey cell lines tested. DGP also displayed broad-spectrum antiviral activity against other flaviviruses. Remarkably, DGP prevented ZIKV-induced mortality in mice lacking the type I interferon receptor (Ifnar1−/−). Cellular and virological experiments showed that DGP blocked ZIKV at a pre-fusion step or during fusion, which prevented the delivery of viral contents into the cytosol of the target cell. Mechanistic studies revealed that DGP prevented the acidification of endosomal/lysosomal compartments in target cells, thus inhibiting ZIKV fusion with cellular membranes and infection. Findings These investigations revealed that DGP inhibits ZIKV infection in vitro and in vivo. Interpretation The small molecule DGP has great potential for preclinical studies and the ability to inhibit ZIKV infection in humans.
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Affiliation(s)
- Alicia Martinez-Lopez
- Department of Microbiology and Immunology, Albert Einstein College of Medicine Bronx, NY 10461, USA
| | - Mirjana Persaud
- Department of Microbiology and Immunology, Albert Einstein College of Medicine Bronx, NY 10461, USA
| | - Maritza Puray Chavez
- Laboratory of Biochemical Pharmacology Emory University, Emory University, Atlanta, GA 30322, USA
| | - Hongjie Zhang
- School of Chinese Medicine, Hong Kong Baptist University, 7 Baptist University Road, Kowloon Tong, Hong Kong SAR, People's Republic of China
| | - Lijun Rong
- Microbiology and Immunology College of Medicine, University of Illinois at Chicago, IL 60612, USA
| | - Shufeng Liu
- Laboratory of Vector-borne Viral Diseases, Division of Viral Products, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, MD 20903, USA
| | - Tony T Wang
- Laboratory of Vector-borne Viral Diseases, Division of Viral Products, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, MD 20903, USA
| | - Stefan G Sarafianos
- Laboratory of Biochemical Pharmacology Emory University, Emory University, Atlanta, GA 30322, USA
| | - Felipe Diaz-Griffero
- Department of Microbiology and Immunology, Albert Einstein College of Medicine Bronx, NY 10461, USA.
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10
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Ren Y, Carcache de Blanco EJ, Fuchs JR, Soejarto DD, Burdette JE, Swanson SM, Kinghorn AD. Potential Anticancer Agents Characterized from Selected Tropical Plants. JOURNAL OF NATURAL PRODUCTS 2019; 82:657-679. [PMID: 30830783 PMCID: PMC6441492 DOI: 10.1021/acs.jnatprod.9b00018] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Higher plants are well known for their value in affording clinically useful anticancer agents, with such compounds acting against cancer cells by a range of mechanisms of action. There remains a strong interest in the discovery and development of plant secondary metabolites as additional cancer chemotherapeutic lead compounds. In the present review, progress on the discovery of plant-derived compounds of the biflavonoid, lignan, sesquiterpene, steroid, and xanthone structural types is presented. Several potential anticancer leads of these types have been characterized from tropical plants collected in three countries as part of our ongoing collaborative multi-institutional project. Preliminary structure-activity relationships and work on in vivo testing and cellular mechanisms of action are also discussed. In addition, the relevant work reported by other groups on the same compound classes is included herein.
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Affiliation(s)
- Yulin Ren
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Esperanza J. Carcache de Blanco
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - James R. Fuchs
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Djaja D. Soejarto
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, United States
- Science and Education, Field Museum of Natural History, Chicago, IL 60605, United States
| | - Joanna E. Burdette
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, United States
| | - Steven M. Swanson
- School of Pharmacy, University of Wisconsin-Madison, Madison, WI 53705, United States
| | - A. Douglas Kinghorn
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
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11
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Shen W, Zhao Y, Chen H, Zhang T, Wu S, Liu P. M3, a natural lignan xyloside, exhibits potent anticancer activity in HCT116 cells. Oncol Lett 2019; 17:2117-2122. [PMID: 30675278 PMCID: PMC6341843 DOI: 10.3892/ol.2018.9823] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 10/12/2018] [Indexed: 12/20/2022] Open
Abstract
4-O-(2',3',4'-tri-O-methyl-β-D-xylopyranosyl) diphyllin (M3) is a cytotoxic compound that was first isolated from the aerial parts of Phyllanthus taxodiifolius. The current study demonstrated that M3, a lignan xyloside, exhibits anticancer effects in a number of cancer cell lines by MTT test, including HCT116 cells. An association was identified between M3 treatment and the reduced proliferation of cancer cells; the half maximal inhibitory concentration (IC50) value of M3 ranged from 0.08 to 1.12 µM. Furthermore, M3 was revealed to exhibit a stronger antiproliferative effect by Annexin-V-FLUOS test compared with VP-16, another natural lignan used in cancer treatment. Notably, the IC50 value of M3 with MTT test in HCT116 cells was 0.08 µM. In addition, it was revealed that M3 could induce apoptosis in HCT116 cells in a caspase-3-dependent manner at a lower concentration compared with VP-16. Further analysis identified that the antiproliferation effect of M3 was associated with the promotion of microtubule depolymerization by CytoDYNAMIX Screen 03 Tubulin Polymerization assay. In summary, the current study demonstrated that M3 could inhibit proliferation and induce apoptosis in HCT116 cells, which supports a potential therapeutic application of M3 in cancer treatment, particularly in colon cancer.
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Affiliation(s)
- Weidong Shen
- Department of Gastroenterology, The Affiliated Jiangyin Hospital of Nantong University, Jiangyin, Jiangsu 214400, P.R. China
| | - Yu Zhao
- School of Pharmacy, Nantong University, Nantong, Jiangsu 226019, P.R. China
| | - Haijiao Chen
- Department of Center Laboratory, The Affiliated Jiangyin Hospital of Nantong University, Jiangyin, Jiangsu 214400, P.R. China
| | - Ting Zhang
- Department of Center Laboratory, The Affiliated Jiangyin Hospital of Nantong University, Jiangyin, Jiangsu 214400, P.R. China
| | - Shenbao Wu
- Department of Gastroenterology, The Affiliated Yiwu Hospital of Wenzhou Medical College, Yiwu, Zhejiang 322000, P.R. China
| | - Pengfei Liu
- Department of Gastroenterology, The Affiliated Jiangyin Hospital of Nantong University, Jiangyin, Jiangsu 214400, P.R. China
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Woodard JL, Huntsman AC, Patel PA, Chai HB, Kanagasabai R, Karmahapatra S, Young AN, Ren Y, Cole MS, Herrera D, Yalowich JC, Kinghorn AD, Burdette JE, Fuchs JR. Synthesis and antiproliferative activity of derivatives of the phyllanthusmin class of arylnaphthalene lignan lactones. Bioorg Med Chem 2018; 26:2354-2364. [PMID: 29656990 PMCID: PMC5962029 DOI: 10.1016/j.bmc.2018.03.033] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 03/14/2018] [Accepted: 03/21/2018] [Indexed: 01/08/2023]
Abstract
A series of arylnaphthalene lignan lactones based on the structure of the phyllanthusmins, a class of potent natural products possessing diphyllin as the aglycone, has been synthesized and screened for activity against multiple cancer cell lines. SAR exploration was performed on both the carbohydrate and lactone moieties of this structural class. These studies have revealed the importance of functionalization of the carbohydrate hydroxy groups with both acetylated and methylated analogues showing increased potency relative to those with unsubstituted sugar moieties. In addition, the requirement for the presence and position of the C-ring lactone has been demonstrated through reduction and selective re-oxidation of the lactone ring. The most potent compound in this study displayed an IC50 value of 18 nM in an HT-29 assay with several others ranging from 50 to 200 nM. In an effort to elucidate their potential mechanism(s) of action, the DNA topoisomerase IIa inhibitory activity of the most potent compounds was examined based on previous reports of structurally similar compounds, but does not appear to contribute significantly to their antiproliferative effects.
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Affiliation(s)
- John L Woodard
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Andrew C Huntsman
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Pratiq A Patel
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Hee-Byung Chai
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Ragu Kanagasabai
- Division of Pharmacology, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | | | - Alexandria N Young
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois-Chicago, Chicago, IL 60612, United States
| | - Yulin Ren
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Malcolm S Cole
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Denisse Herrera
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois-Chicago, Chicago, IL 60612, United States
| | - Jack C Yalowich
- Division of Pharmacology, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - A Douglas Kinghorn
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Joanna E Burdette
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois-Chicago, Chicago, IL 60612, United States
| | - James R Fuchs
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States.
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13
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Zhao C, Rakesh KP, Mumtaz S, Moku B, Asiri A, Marwani HM, Manukumar HM, Qin HL. Arylnaphthalene lactone analogues: synthesis and development as excellent biological candidates for future drug discovery. RSC Adv 2018; 8:9487-9502. [PMID: 35541842 PMCID: PMC9078642 DOI: 10.1039/c7ra13754k] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Accepted: 02/26/2018] [Indexed: 01/13/2023] Open
Abstract
Arylnaphthalene lactones are natural products extracted from a wide range of different parts of plants. The progressing interest in the synthesis of these compounds is due to their significant biological activities, which have made them potential candidates in drug discovery and development. This review mainly covers recent developments in the synthesis and biological applications of arylnaphthalene lactone analogs. A review of recent developments in the synthesis and biological applications of arylnaphthalene lactones analogs.![]()
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Affiliation(s)
- Chuang Zhao
- Department of Pharmaceutical Engineering
- School of Chemistry
- Chemical Engineering and Life Science
- Wuhan University of Technology
- Wuhan
| | - K. P. Rakesh
- Department of Pharmaceutical Engineering
- School of Chemistry
- Chemical Engineering and Life Science
- Wuhan University of Technology
- Wuhan
| | - Saira Mumtaz
- Department of Pharmaceutical Engineering
- School of Chemistry
- Chemical Engineering and Life Science
- Wuhan University of Technology
- Wuhan
| | - Balakrishna Moku
- Department of Pharmaceutical Engineering
- School of Chemistry
- Chemical Engineering and Life Science
- Wuhan University of Technology
- Wuhan
| | - Abdullah M. Asiri
- Department of Chemistry
- Faculty of Science
- King Abdulaziz University
- Jeddah 21589
- Saudi Arabia
| | - Hadi M. Marwani
- Department of Chemistry
- Faculty of Science
- King Abdulaziz University
- Jeddah 21589
- Saudi Arabia
| | - H. M. Manukumar
- Department of Studies in Biotechnology
- University of Mysore
- Mysuru-570006
- India
| | - Hua-Li Qin
- Department of Pharmaceutical Engineering
- School of Chemistry
- Chemical Engineering and Life Science
- Wuhan University of Technology
- Wuhan
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14
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Li S, Jia X, Shen X, Wei Z, Jiang Z, Liao Y, Guo Y, Zheng X, Zhong G, Song G. Structure-activity relationships of 3-O-β-chacotriosyl oleanic acid derivatives as entry inhibitors for highly pathogenic H5N1 influenza virus. Bioorg Med Chem 2017; 25:4384-4396. [DOI: 10.1016/j.bmc.2017.06.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 06/05/2017] [Accepted: 06/13/2017] [Indexed: 10/19/2022]
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15
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Liu L, Hu Y, Liu H, Liu DY, Xia JH, Sun JS. First Total Synthesis of the Bioactive Arylnaphthyl Lignan 4-O
-Glycosides Phyllanthusmin D and 4′′-O
-Acetylmananthoside B. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700556] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Lei Liu
- The National Research Centre for Carbohydrate Synthesis; 99 Ziyang Avenue Nanchang China
| | - Yang Hu
- The National Research Centre for Carbohydrate Synthesis; 99 Ziyang Avenue Nanchang China
| | - Hui Liu
- The National Research Centre for Carbohydrate Synthesis; 99 Ziyang Avenue Nanchang China
| | - De-Yong Liu
- The National Research Centre for Carbohydrate Synthesis; 99 Ziyang Avenue Nanchang China
| | - Jian-Hui Xia
- The National Research Centre for Carbohydrate Synthesis; 99 Ziyang Avenue Nanchang China
- Department of Chemistry of Jiangxi Normal University; 99 Ziyang Avenue Nanchang China
| | - Jian-Song Sun
- The National Research Centre for Carbohydrate Synthesis; 99 Ziyang Avenue Nanchang China
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16
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Kim T, Jeong KH, Kang KS, Nakata M, Ham J. An Optimized and General Synthetic Strategy To Prepare Arylnaphthalene Lactone Natural Products from Cyanophthalides. European J Org Chem 2017. [DOI: 10.1002/ejoc.201601611] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Taejung Kim
- Natural Constituents Research Center; Korea Institute of Science and Technology (KIST); 25451 Gangneung Republic of Korea
- Department of Applied Chemistry; Faculty of Science and Technology; Keio University; 3-14-1 Hiyoshi, Kohoku-ku 223-8522 Yokohama Japan
| | - Kyu Hyuk Jeong
- Natural Constituents Research Center; Korea Institute of Science and Technology (KIST); 25451 Gangneung Republic of Korea
| | - Ki Sung Kang
- College of Korean Medicine; Gachon University; 13120 Seongnam Republic of Korea
| | - Masaya Nakata
- Department of Applied Chemistry; Faculty of Science and Technology; Keio University; 3-14-1 Hiyoshi, Kohoku-ku 223-8522 Yokohama Japan
| | - Jungyeob Ham
- Natural Constituents Research Center; Korea Institute of Science and Technology (KIST); 25451 Gangneung Republic of Korea
- Department of Biological Chemistry; University of Science and Technology (UST); 34113 Daejeon Republic of Korea
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17
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Duan D, Doak AK, Nedyalkova L, Shoichet BK. Colloidal aggregation and the in vitro activity of traditional Chinese medicines. ACS Chem Biol 2015; 10:978-88. [PMID: 25606714 DOI: 10.1021/cb5009487] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Traditional Chinese Medicines (TCMs) have been the sole source of therapeutics in China for two millennia. In recent drug discovery efforts, purified components of TCM formulations have shown activity in many in vitro assays, raising concerns of promiscuity. Here, we investigated 14 bioactive small molecules isolated from TCMs for colloidal aggregation. At concentrations commonly used in cell-based or biochemical assay conditions, eight of these compounds formed particles detectable by dynamic light scattering and showed detergent-reversible inhibition against β-lactamase and malate dehydrogenase, two counter-screening enzymes. When three of these compounds were tested against their literature-reported molecular targets, they showed similar reversal of their inhibitory activity in the presence of detergent. For three of the most potent aggregators, contributions to promiscuity via oxidative cycling were investigated; addition of 1 mM DTT had no effect on their activity, which is inconsistent with an oxidative mechanism. TCMs are often active at micromolar concentrations; this study suggests that care must be taken to control for artifactual activity when seeking their primary targets. Implications for the formulation of these molecules are considered.
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Affiliation(s)
- Da Duan
- Department
of Pharmaceutical Chemistry, University of California, San Francisco, 1700 Fourth Street, San Francisco, California 94158-2550, United States
- Leslie
Dan Faculty of Pharmacy, Donnelly Center, University of Toronto, 144 College Street, Toronto, Ontario M5S3M2, Canada
| | - Allison K. Doak
- Department
of Pharmaceutical Chemistry, University of California, San Francisco, 1700 Fourth Street, San Francisco, California 94158-2550, United States
| | - Lyudmila Nedyalkova
- Leslie
Dan Faculty of Pharmacy, Donnelly Center, University of Toronto, 144 College Street, Toronto, Ontario M5S3M2, Canada
| | - Brian K. Shoichet
- Department
of Pharmaceutical Chemistry, University of California, San Francisco, 1700 Fourth Street, San Francisco, California 94158-2550, United States
- Leslie
Dan Faculty of Pharmacy, Donnelly Center, University of Toronto, 144 College Street, Toronto, Ontario M5S3M2, Canada
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18
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Zhang Z, Ma J, Zhu L, Zhao Y. Synthesis and identification of cytotoxic diphyllin glycosides as vacuolar H+-ATPase inhibitors. Eur J Med Chem 2014; 82:466-71. [DOI: 10.1016/j.ejmech.2014.06.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Revised: 05/26/2014] [Accepted: 06/01/2014] [Indexed: 02/07/2023]
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19
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Ren Y, Lantvit D, Deng Y, Kanagasabai R, Gallucci JC, Ninh TN, Chai HB, Soejarto DD, Fuchs J, Yalowich JC, Yu J, Swanson SM, Kinghorn AD. Potent cytotoxic arylnaphthalene lignan lactones from Phyllanthus poilanei. JOURNAL OF NATURAL PRODUCTS 2014; 77:1494-504. [PMID: 24937209 PMCID: PMC4073661 DOI: 10.1021/np5002785] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Indexed: 05/19/2023]
Abstract
Two new (1 and 2) and four known arylnaphthalene lignan lactones (3-6) were isolated from different plant parts of Phyllanthus poilanei collected in Vietnam, with two further known analogues (7 and 8) being prepared from phyllanthusmin C (4). The structures of the new compounds were determined by interpretation of their spectroscopic data and by chemical methods, and the structure of phyllanthusmin D (1) was confirmed by single-crystal X-ray diffraction analysis. Several of these arylnaphthalene lignan lactones were cytotoxic toward HT-29 human colon cancer cells, with compounds 1 and 7-O-[(2,3,4-tri-O-acetyl)-α-L-arabinopyranosyl)]diphyllin (7) found to be the most potent, exhibiting IC50 values of 170 and 110 nM, respectively. Compound 1 showed activity when tested in an in vivo hollow fiber assay using HT-29 cells implanted in immunodeficient NCr nu/nu mice. Mechanistic studies showed that this compound mediated its cytotoxic effects by inducing tumor cell apoptosis through activation of caspase-3, but it did not inhibit DNA topoisomerase IIα activity.
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Affiliation(s)
- Yulin Ren
- Division
of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Daniel
D. Lantvit
- Department
of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612, United States
| | - Youcai Deng
- Division
of Hematology, Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, Ohio 43210, United States
| | - Ragu Kanagasabai
- Division
of Pharmacology, College of Pharmacy, The
Ohio State University, Columbus, Ohio 43210, United States
| | - Judith C. Gallucci
- Department
of Chemistry and Biochemistry, The Ohio
State University, Columbus, Ohio 43210, United States
| | - Tran Ngoc Ninh
- Institute
of Ecology and Biological Resources, Vietnam
Academy of Science and Technology, Hoang
Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Hee-Byung Chai
- Division
of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Djaja D. Soejarto
- Department
of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612, United States
- Department
of Botany, Field Museum of Natural History, Chicago, Illinois 60605, United States
| | - James
R. Fuchs
- Division
of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Jack C. Yalowich
- Division
of Pharmacology, College of Pharmacy, The
Ohio State University, Columbus, Ohio 43210, United States
| | - Jianhua Yu
- Division
of Hematology, Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, Ohio 43210, United States
- Comprehensive
Cancer Center, The Ohio State University, Columbus, Ohio 43210, United States
| | - Steven M. Swanson
- Department
of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612, United States
| | - A. Douglas Kinghorn
- Division
of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
- Tel: +1 614 247-8094. Fax: +1 614 247-8642. E-mail:
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20
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Park JE, Lee J, Seo SY, Shin D. Regioselective route for arylnaphthalene lactones: convenient synthesis of taiwanin C, justicidin E, and daurinol. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.12.014] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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21
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Cytotoxic effect and molecular docking of 4-ethoxycarbonylmethyl-1-(piperidin-4-ylcarbonyl)-thiosemicarbazide--a novel topoisomerase II inhibitor. J Mol Model 2012. [PMID: 23187686 PMCID: PMC3578725 DOI: 10.1007/s00894-012-1679-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The preliminary cytotoxic effect of 4-ethoxycarbonylmethyl-1-(piperidin-4-ylcarbonyl)-thiosemicarbazide hydrochloride (1)-a potent topoisomerase II inhibitor-was measured using a MTT assay. It was found that the compound decreased the number of viable cells in both estrogen receptor-positive MCF-7 and estrogen receptor-negative MDA-MB-231breast cancer cells, with IC(50) values of 146 ± 2 and 132 ± 2 μM, respectively. To clarify the molecular basis of the inhibitory action of 1, molecular docking studies were carried out. The results suggest that 1 targets the ATP binding pocket.
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22
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Zhao Y, Ni C, Zhang Y, Zhu L. Synthesis and Bioevaluation of Diphyllin Glycosides as Novel Anticancer Agents. Arch Pharm (Weinheim) 2012; 345:622-8. [DOI: 10.1002/ardp.201200035] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2012] [Revised: 03/16/2012] [Accepted: 03/21/2012] [Indexed: 11/08/2022]
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23
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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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24
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Kathiravan MK, Khilare MM, Nikoomanesh K, Chothe AS, Jain KS. Topoisomerase as target for antibacterial and anticancer drug discovery. J Enzyme Inhib Med Chem 2012; 28:419-35. [DOI: 10.3109/14756366.2012.658785] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Muthu K. Kathiravan
- Department of Pharmaceutical Chemistry, Sinhgad College of Pharmacy,
Maharashtra, India
| | - Madhavi M. Khilare
- Department of Pharmaceutical Chemistry, Sinhgad College of Pharmacy,
Maharashtra, India
| | - Kiana Nikoomanesh
- Department of Pharmaceutical Chemistry, Sinhgad College of Pharmacy,
Maharashtra, India
| | - Aparna S. Chothe
- Department of Pharmaceutical Chemistry, AISSMS College of Pharmacy,
Pune, Maharashtra, India
| | - Kishor S. Jain
- Department of Pharmaceutical Chemistry, Sinhgad College of Pharmacy,
Maharashtra, India
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