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Ganaie BA, Banday JA, Bhat BA, Ara T. Synthesis and In Vitro Anticancer Activity of Triazolyl Analogs of Podophyllotoxin, a Naturally Occurring Lignin. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2022. [DOI: 10.1134/s1070428021120216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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2
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de Keijzer MJ, de Klerk DJ, de Haan LR, van Kooten RT, Franchi LP, Dias LM, Kleijn TG, van Doorn DJ, Heger M. Inhibition of the HIF-1 Survival Pathway as a Strategy to Augment Photodynamic Therapy Efficacy. Methods Mol Biol 2022; 2451:285-403. [PMID: 35505024 DOI: 10.1007/978-1-0716-2099-1_19] [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] [Indexed: 06/14/2023]
Abstract
Photodynamic therapy (PDT) is a non-to-minimally invasive treatment modality that utilizes photoactivatable drugs called photosensitizers to disrupt tumors with locally photoproduced reactive oxygen species (ROS). Photosensitizer activation by light results in hyperoxidative stress and subsequent tumor cell death, vascular shutdown and hypoxia, and an antitumor immune response. However, sublethally afflicted tumor cells initiate several survival mechanisms that account for decreased PDT efficacy. The hypoxia inducible factor 1 (HIF-1) pathway is one of the most effective cell survival pathways that contributes to cell recovery from PDT-induced damage. Several hundred target genes of the HIF-1 heterodimeric complex collectively mediate processes that are involved in tumor cell survival directly and indirectly (e.g., vascularization, glucose metabolism, proliferation, and metastasis). The broad spectrum of biological ramifications culminating from the activation of HIF-1 target genes reflects the importance of HIF-1 in the context of therapeutic recalcitrance. This chapter elaborates on the involvement of HIF-1 in cancer biology, the hypoxic response mechanisms, and the role of HIF-1 in PDT. An overview of inhibitors that either directly or indirectly impede HIF-1-mediated survival signaling is provided. The inhibitors may be used as pharmacological adjuvants in combination with PDT to augment therapeutic efficacy.
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Affiliation(s)
- Mark J de Keijzer
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, Department of Pharmaceutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
- Department of Pharmaceutics, Utrecht Institute of Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
| | - Daniel J de Klerk
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, Department of Pharmaceutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
- Laboratory of Experimental Oncology, Department of Pathology, Erasmus MC, Rotterdam, The Netherlands
| | - Lianne R de Haan
- Laboratory of Experimental Oncology, Department of Pathology, Erasmus MC, Rotterdam, The Netherlands
| | - Robert T van Kooten
- Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | - Leonardo P Franchi
- Departamento de Bioquímica e Biologia Molecular, Instituto de Ciências Biológicas (ICB) 2, Universidade Federal de Goiás (UFG), Goiânia, GO, Brazil
- Faculty of Philosophy, Sciences, and Letters of Ribeirão Preto, epartment of Chemistry, Center of Nanotechnology and Tissue Engineering-Photobiology and Photomedicine Research Group,University of São Paulo, São Paulo, Brazil
| | - Lionel M Dias
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, Department of Pharmaceutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
- Laboratory of Experimental Oncology, Department of Pathology, Erasmus MC, Rotterdam, The Netherlands
| | - Tony G Kleijn
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, Department of Pharmaceutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
- Laboratory of Experimental Oncology, Department of Pathology, Erasmus MC, Rotterdam, The Netherlands
| | - Diederick J van Doorn
- Department of Gastroenterology and Hepatology, Amsterdam UMC, Location AMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Michal Heger
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, Department of Pharmaceutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, People's Republic of China.
- Department of Pharmaceutics, Utrecht Institute of Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands.
- Laboratory of Experimental Oncology, Department of Pathology, Erasmus MC, Rotterdam, The Netherlands.
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Design and Synthesis of Novel Podophyllotoxins Hybrids and the Effects of Different Functional Groups on Cytotoxicity. MOLECULES (BASEL, SWITZERLAND) 2021; 27:molecules27010220. [PMID: 35011453 PMCID: PMC8746343 DOI: 10.3390/molecules27010220] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 12/22/2021] [Accepted: 12/28/2021] [Indexed: 02/02/2023]
Abstract
Development of novel anticancer therapeutic candidates is one of the key challenges in medicinal chemistry. Podophyllotoxin and its derivatives, as a potent cytotoxic agent, have been at the center of extensive chemical amendment and pharmacological investigation. Herein, a new series of podophyllotoxin-N-sulfonyl amidine hybrids (4a–4v, 5a–5f) were synthesized by a CuAAC/ring-opening procedure. All the synthesized podophyllotoxins derivatives were evaluated for in vitro cytotoxic activity against a panel of human lung (A-549) cancer cell lines. Different substituents’, or functional groups’ antiproliferative activities were discussed. The –CF3 group performed best (IC50: 1.65 μM) and exhibited more potent activity than etoposide. Furthermore, molecular docking and dynamics studies were also conducted for active compounds and the results were in good agreement with the observed IC50 values.
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Shah Z, Gohar UF, Jamshed I, Mushtaq A, Mukhtar H, Zia-UI-Haq M, Toma SI, Manea R, Moga M, Popovici B. Podophyllotoxin: History, Recent Advances and Future Prospects. Biomolecules 2021; 11:603. [PMID: 33921719 PMCID: PMC8073934 DOI: 10.3390/biom11040603] [Citation(s) in RCA: 66] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 04/12/2021] [Accepted: 04/14/2021] [Indexed: 02/06/2023] Open
Abstract
Podophyllotoxin, along with its various derivatives and congeners are widely recognized as broad-spectrum pharmacologically active compounds. Etoposide, for instance, is the frontline chemotherapeutic drug used against various cancers due to its superior anticancer activity. It has recently been redeveloped for the purpose of treating cytokine storm in COVID-19 patients. Podophyllotoxin and its naturally occurring congeners have low bioavailability and almost all these initially discovered compounds cause systemic toxicity and development of drug resistance. Moreover, the production of synthetic derivatives that could suffice for the clinical limitations of these naturally occurring compounds is not economically feasible. These challenges demanded continuous devotions towards improving the druggability of these drugs and continue to seek structure-optimization strategies. The discovery of renewable sources including microbial origin for podophyllotoxin is another possible approach. This review focuses on the exigency of innovation and research required in the global R&D and pharmaceutical industry for podophyllotoxin and related compounds based on recent scientific findings and market predictions.
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Affiliation(s)
- Zinnia Shah
- Institute of Industrial Biotechnology (IIB), Government College University, Lahore 54000, Pakistan; (Z.S.); (U.F.G.); (I.J.); (H.M.)
| | - Umar Farooq Gohar
- Institute of Industrial Biotechnology (IIB), Government College University, Lahore 54000, Pakistan; (Z.S.); (U.F.G.); (I.J.); (H.M.)
| | - Iffat Jamshed
- Institute of Industrial Biotechnology (IIB), Government College University, Lahore 54000, Pakistan; (Z.S.); (U.F.G.); (I.J.); (H.M.)
| | - Aamir Mushtaq
- Gulab Devi Institute of Pharmacy, Gulab Devi Educational Complex, Lahore 54000, Pakistan;
| | - Hamid Mukhtar
- Institute of Industrial Biotechnology (IIB), Government College University, Lahore 54000, Pakistan; (Z.S.); (U.F.G.); (I.J.); (H.M.)
| | - Muhammad Zia-UI-Haq
- Office of Research, Innovation & Commercialization, Lahore College for Women University, Lahore 54000, Pakistan
| | - Sebastian Ionut Toma
- Faculty of Medicine, Transilvania University of Brasov, 500036 Brasov, Romania; (M.M.); (B.P.)
| | - Rosana Manea
- Faculty of Medicine, Transilvania University of Brasov, 500036 Brasov, Romania; (M.M.); (B.P.)
| | - Marius Moga
- Faculty of Medicine, Transilvania University of Brasov, 500036 Brasov, Romania; (M.M.); (B.P.)
| | - Bianca Popovici
- Faculty of Medicine, Transilvania University of Brasov, 500036 Brasov, Romania; (M.M.); (B.P.)
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Ha W, Zhao XB, Zhao WH, Tang JJ, Shi YP. A colon-targeted podophyllotoxin nanoprodrug: synthesis, characterization, and supramolecular hydrogel formation for the drug combination. J Mater Chem B 2021; 9:3200-3209. [PMID: 33885624 DOI: 10.1039/d0tb02719g] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Making full use of the undeveloped bioactive natural product derivatives by selectively delivering them to target sites can effectively increase their druggability and reduce the wastage of resources. Azo-based prodrugs are widely regarded as an effective targeted delivery means for colon-related disease treatment. Herein, we report a new-type of azo-based nanoprodrug obtained from bioactive natural products, in which the readily available podophyllotoxin natural products are connected with methoxy polyethylene glycol (mPEG) via a multifunctional azobenzene group. The amphiphilic prodrug can form nanosized micelles in water and will be highly selectively activated by azoreductases, leading to the in situ generation of anticancer podophyllotoxin derivatives (AdP) in the colon after the cleavage of the azo bond. To satisfy the demand of drug carriers for cancer combination therapy in clinics, α-CD is further introduced into this nanoprodrug micelle system to form a supramolecular hydrogel via a cascade self-assembly strategy. Using imaging mass spectrometry (IMS), the colon-specific drug release ability of the hydrogel after oral administration is demonstrated at the molecular level. Finally, the nanoprodrug hydrogel is further used as a carrier to load a hydrophilic anti-cancer drug 5-FU during the hierarchical self-assembly process and to co-deliver AdP and 5-FU for the drug combination. The combination use of AdP and 5-FU provides enhanced cytotoxicity which indicates a significant synergistic interaction. This work offers a new way to enhance the therapeutic effect of nanoprodrugs via drug combination, and provides a new strategy for reusing bioactive natural products and their derivatives.
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Affiliation(s)
- Wei Ha
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, People's Republic of China.
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Zhao XB, Ha W, Gao K, Shi YP. Precisely Traceable Drug Delivery of Azoreductase-Responsive Prodrug for Colon Targeting via Multimodal Imaging. Anal Chem 2020; 92:9039-9047. [PMID: 32501673 DOI: 10.1021/acs.analchem.0c01220] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We report the development of an azoreductase-responsive prodrug AP-N═N-Cy in which the precursor compound AP, a readily available podophyllotoxin derivative, is linked with a NIR fluorophore (Cy) via a multifunctional azobenzene group. This type of azo-based prodrug can serve as not only an azoreductase-responsive NIR probe to real-time tracking of the drug delivery process but also a delivery platform for an anticancer compound (AdP). We have shown that cleavage of the multifunctional azobenzene group in AP-N═N-Cy only occurred in the presence of azoreductase, which specifically secretes in the colon, resulting in direct release of AdP through an in situ modification of a phenylamino group on the precursor AP. Moreover, introduction of the azobenzene group endows the prodrug with an unique fluorescence "off-on" property and served as a switch to "turn on" the fluorescence of Cy as consequence of a self-elimination reaction with breakage of an azo bond. Such a prodrug can be administered orally and exhibit high stability and low toxicity before arriving at the colon. In view of the synchronism of drug release and the fluorescence turn-on process, the fluorescence imaging method was utilized to precisely trace drug delivery in vitro, ex vivo, and in vivo. Distinguishingly, the biodistribution of AdP and Cy in various tissues was further precisely mapped at the molecular level using imaging mass spectrometry. To the best of our knowledge, this is the first time that the in vivo real-time precise tracking of the colon-specific drug release and biodistribution was reported via a multimodal imaging method.
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Affiliation(s)
- Xiao-Bo Zhao
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, People's Republic of China.,University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Wei Ha
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, People's Republic of China
| | - Kun Gao
- College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Yan-Ping Shi
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, People's Republic of China
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Hou W, Zhang G, Luo Z, Su L, Xu H. Click chemistry‐based synthesis and cytotoxic activity evaluation of 4α‐triazole acetate podophyllotoxin derivatives. Chem Biol Drug Des 2018; 93:473-483. [DOI: 10.1111/cbdd.13436] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 09/26/2018] [Accepted: 10/28/2018] [Indexed: 12/24/2022]
Affiliation(s)
- Wei Hou
- College of Pharmaceutical ScienceInstitute of Drug Development & Chemical Biology (IDD & CB)Zhejiang University of Technology Hangzhou China
| | - Guanjun Zhang
- College of Chemical Engineering and Materials ScienceTianjin University of Science & Technology Tianjin China
| | - Zhi Luo
- Shanghai Evergene Biotech Co., Ltd. Shanghai China
| | - Lin Su
- College of Pharmaceutical ScienceInstitute of Drug Development & Chemical Biology (IDD & CB)Zhejiang University of Technology Hangzhou China
| | - Hongtao Xu
- Shanghai Institute for Advanced Immunochemical StudiesShanghaiTech University Shanghai China
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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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Shankaraiah N, Kumar NP, Amula SB, Nekkanti S, Jeengar MK, Naidu V, Reddy TS, Kamal A. One-pot synthesis of podophyllotoxin–thiourea congeners by employing NH2SO3H/NaI: Anticancer activity, DNA topoisomerase-II inhibition, and apoptosis inducing agents. Bioorg Med Chem Lett 2015; 25:4239-44. [DOI: 10.1016/j.bmcl.2015.07.100] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Revised: 07/27/2015] [Accepted: 07/30/2015] [Indexed: 11/25/2022]
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10
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Synthesis of a terphenyl substituted 4-aza-2,3-didehydropodophyllotoxin analogues as inhibitors of tubulin polymerization and apoptosis inducers. Bioorg Med Chem 2014; 22:2714-23. [DOI: 10.1016/j.bmc.2014.03.021] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2014] [Revised: 03/08/2014] [Accepted: 03/11/2014] [Indexed: 11/23/2022]
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Luo J, Hu Y, Kong W, Yang M. Evaluation and structure-activity relationship analysis of a new series of arylnaphthalene lignans as potential anti-tumor agents. PLoS One 2014; 9:e93516. [PMID: 24675875 PMCID: PMC3968169 DOI: 10.1371/journal.pone.0093516] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2013] [Accepted: 03/06/2014] [Indexed: 12/18/2022] Open
Abstract
Arylnaphthalene lignan lactones have attracted considerable interest because of their anti-tumor and anti-hyperlipidimic activities. However, to our knowledge, few studies have explored the effects of these compounds on human leukemia cell lines. In this study, five arylnaphthalene lignans including 6′-hydroxy justicidin A (HJA), 6′-hydroxy justicidin B (HJB), justicidin B (JB), chinensinaphthol methyl ether (CME) and Taiwanin E methyl ether (TEME) were isolated from Justicia procumbens and their effects on the proliferation and apoptosis of the human leukemia K562 cell line were investigated then used to assess structure-activity relationships. To achieve these aims, cytotoxicity was assayed using the MTT assay, while intracellular SOD activity was detected using the SOD Activity Assay kit. Apoptosis was measured by both the using a cycle TEST PLUS DNA reagent kit as well as the FITC Annexin V apoptosis detection kit in combination with flow cytometry. Activation of caspase-mediated apoptosis was evaluated using a FITC active Caspase-3 apoptosis kit and flow cytometry. The results indicated that HJB, HJA and JB significantly inhibited the growth of K562 cells by decreasing both proliferation and SOD activity and inducing apoptosis. The sequence of anti-proliferative activity induced by the five tested arylnaphthalenes by decreasing strength was HJB > HJA > JB > CME > TEME. HJB, HJA and JB also decreased SOD activity and induced apoptosis in a dose-dependent manner. Activation of caspase-3 further indicated that HJB, HJA and JB induced caspase-dependent intrinsic and/or extrinsic apoptosis pathways. Together, these assays suggest that arylnaphthalene lignans derived from Justicia procumbens induce apoptosis to varying degrees, through a caspase-dependent pathway in human leukemia K562 cells. Furthermore, analysis of structure-activity relationships suggest that hydroxyl substitution at C-1 and C-6′ significantly increased the antiproliferative activity of arylnaphthalene lignans while a methoxyl at C-1 significantly decreased the effect.
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Affiliation(s)
- Jiaoyang Luo
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, P.R. China
| | - Yichen Hu
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, P.R. China
| | - Weijun Kong
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, P.R. China
| | - Meihua Yang
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, P.R. China
- * E-mail:
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Kou L, Wang MJ, Wang LT, Zhao XB, Nan X, Yang L, Liu YQ, Morris-Natschke SL, Lee KH. Toward synthesis of third-generation spin-labeled podophyllotoxin derivatives using isocyanide multicomponent reactions. Eur J Med Chem 2014; 75:282-8. [PMID: 24553146 PMCID: PMC3955052 DOI: 10.1016/j.ejmech.2014.01.038] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Revised: 01/15/2014] [Accepted: 01/18/2014] [Indexed: 10/25/2022]
Abstract
Spin-labeled podophyllotoxins have elicited widespread interest due to their far superior antitumor activity compared to podophyllotoxin. To extend our prior studies in this research area, we synthesized a new generation of spin-labeled podophyllotoxin analogs via isocyanide multicomponent reactions and evaluated their cytotoxicity against four human cancer cell lines (A-549, DU-145, KB and KBvin). Most of the compounds exhibited potent cytotoxic activity against all four cell lines, notably against the drug resistant KBvin cancer cell line. Among the new analogs, compounds 12e (IC50: 0.60-0.75 μM) and 12h (IC50: 1.12-2.03 μM) showed superior potency to etoposide (IC50: 2.03 to >20 μM), a clinically available anticancer drug. With a concise efficient synthesis and potent cytotoxic profiles, compounds 12e and 12h merit further development as a new generation of epipodophyllotoxin-derived antitumor clinical trial candidates.
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Affiliation(s)
- Liang Kou
- School of Pharmacy, Lanzhou University, Lanzhou 730000, PR China
| | - Mei-Juan Wang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, PR China
| | - Li-Ting Wang
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Xiao-Bo Zhao
- School of Pharmacy, Lanzhou University, Lanzhou 730000, PR China
| | - Xiang Nan
- School of Pharmacy, Lanzhou University, Lanzhou 730000, PR China
| | - Liu Yang
- Environmental and Municipal Engineering School, Lanzhou Jiaotong University, Lanzhou 730000, PR China
| | - Ying-Qian Liu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, PR China; Xinjiang Production & Construction Corps Key Laboratory of Protection and Utilization of Biological Resources in Tarim Basin, PR China.
| | - Susan L Morris-Natschke
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Kuo-Hsiung Lee
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, USA; Chinese Medicine Research and Development Center, China Medical University and Hospital, Taichung, Taiwan.
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Rational approaches, design strategies, structure activity relationship and mechanistic insights for anticancer hybrids. Eur J Med Chem 2014; 77:422-87. [PMID: 24685980 DOI: 10.1016/j.ejmech.2014.03.018] [Citation(s) in RCA: 306] [Impact Index Per Article: 30.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2013] [Revised: 03/02/2014] [Accepted: 03/06/2014] [Indexed: 12/16/2022]
Abstract
A Hybrid drug which comprises the incorporation of two drug pharmacophores in one single molecule are basically designed to interact with multiple targets or to amplify its effect through action on another bio target as one single molecule or to counterbalance the known side effects associated with the other hybrid part(.) The present review article offers a detailed account of the design strategies employed for the synthesis of anticancer agents via molecular hybridization techniques. Over the years, the researchers have employed this technique to discover some promising chemical architectures displaying significant anticancer profiles. Molecular hybridization as a tool has been particularly utilized for targeting tubulin protein as exemplified through the number of research papers. The microtubule inhibitors such as taxol, colchicine, chalcones, combretasatin, phenstatins and vinca alkaloids have been utilized as one of the functionality of the hybrids and promising results have been obtained in most of the cases with some of the tubulin based hybrids exhibiting anticancer activity at nanomolar level. Linkage with steroids as biological carrier vector for anticancer drugs and the inclusion of pyrrolo [2,1-c] [1,4]benzodiazepines (PBDs), a family of DNA interactive antitumor antibiotics derived from Streptomyces species in hybrid structure based drug design has also emerged as a potential strategy. Various heteroaryl based hybrids in particular isatin and coumarins have also been designed and reported to posses' remarkable inhibitory potential. Apart from presenting the design strategies, the article also highlights the structure activity relationship along with mechanistic insights revealed during the biological evaluation of the hybrids.
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14
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Zhang ZJ, Tian J, Wang LT, Wang MJ, Nan X, Yang L, Liu YQ, Morris-Natschke SL, Lee KH. Design, synthesis and cytotoxic activity of novel sulfonylurea derivatives of podophyllotoxin. Bioorg Med Chem 2013; 22:204-10. [PMID: 24332656 DOI: 10.1016/j.bmc.2013.11.035] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Revised: 11/08/2013] [Accepted: 11/17/2013] [Indexed: 11/15/2022]
Abstract
Three series of novel sulfonylurea podophyllotoxin derivatives were designed, synthesized, and evaluated for in vitro cytotoxicity against four tumor cell lines (A-549, DU-145, KB and KBvin). Compounds 14c (IC₅₀: 1.41-1.76 μM) and 14e (IC₅₀: 1.72-2.01 μM) showed superior cytotoxic activity compared with etoposide (IC₅₀: 2.03 to >20 μM), a clinically available anticancer drug. Significantly, most of the compounds exhibited comparable cytotoxicity against the drug-resistant tumor cell line KBvin, while etoposide lost activity completely. Preliminary structure-activity relationship (SAR) correlations indicated that the 4'-O-methyl functionality in podophyllotoxin analogues may be essential to maintain cytotoxic activity, while an arylsulfonylurea side chain at podophyllotoxin's 4β position can significantly improve cytotoxic activity.
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Affiliation(s)
- Zhi-Jun Zhang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, PR China
| | - Jing Tian
- School of Pharmacy, Lanzhou University, Lanzhou 730000, PR China
| | - Li-Ting Wang
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, United States
| | - Mei-Juan Wang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, PR China
| | - Xiang Nan
- School of Pharmacy, Lanzhou University, Lanzhou 730000, PR China
| | - Liu Yang
- Environmental and Municipal Engineering School, Lanzhou Jiaotong University, Lanzhou 730000, PR China
| | - Ying-Qian Liu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, PR China.
| | - Susan L Morris-Natschke
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, United States
| | - Kuo-Hsiung Lee
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, United States; Chinese Medicine Research and Development Center, China Medical University and Hospital, Taichung, Taiwan.
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15
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Sang CY, Liu JF, Qin WW, Zhao J, Hui L, Jin YX, Chen SW. Synthesis and evaluation of the apoptosis inducing and CT DNA interaction properties of a series of 4β-carbamoyl 4'-O-demethylepipodophyllotoxins. Eur J Med Chem 2013; 70:59-67. [PMID: 24140948 DOI: 10.1016/j.ejmech.2013.09.053] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Revised: 09/25/2013] [Accepted: 09/30/2013] [Indexed: 01/21/2023]
Abstract
A series of carbamate derivatives of 4'-demethylepipodophyllotoxin have been synthesized, and their cytotoxicities against several human cancer cell lines, including HeLa, A549, HCT-8, and HL-60 cells, evaluated. Some of these compounds exhibited higher levels of cytotoxicity than the anticancer drug etoposide. 4β-4'-Demethylepipodophyllotoxin 1-(4-nitrophenyl) piperazinyl carbamate (19) was found to be the most potent compound of those synthesized in the current study, and induced cell cycle arrest in the G2/M phase in HeLa cells, which was accompanied by apoptosis. Furthermore, this compound activated the expression of Bax, p53 and caspase-3 in HeLa cells, leading to changes in the conformation of calf thymus DNA from the B-form to a more compact C-form.
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Affiliation(s)
- Chun-Yan Sang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China
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16
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Ai Z, Wang J, Xu Y, Teng Y. Bioinformatics analysis reveals potential candidate drugs for cervical cancer. J Obstet Gynaecol Res 2013; 39:1052-8. [PMID: 23551598 DOI: 10.1111/jog.12022] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2012] [Accepted: 11/08/2012] [Indexed: 01/21/2023]
Abstract
AIM We sought to explore the mechanisms of cervical carcinoma response to epidermal growth factor (EGF), and then identify biologically active small molecules capable of targeting the sub-pathways that were dysregulated in cervical cancer cells in the response to EGF. MATERIAL AND METHODS Differentially expressed genes and pathways were analyzed based on the transcription profile of GSE6783, and then the differentially expressed molecules were further analyzed by several bioinformatics methods. RESULTS Our results suggested that EGF could promote cervical cancer cell proliferation through triggering the dysregulation of certain sub-pathways in the mitogen-activated protein kinase signaling pathway, p53 signaling pathway and pathways in cancer. Furthermore, our bioinformatics analysis revealed a total of 49 small molecules which may play a role in perturbing the response to EGF of cervical cancer cells. CONCLUSIONS Candidate drugs identified by our approach may provide the groundwork for a combination therapy approach for cervical cancer; however, further studies are still needed to make sure that the use of parthenolide or other anti-cancer agents is effective without inhibiting important host defense mechanisms in cervical cancer.
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Affiliation(s)
- Zhihong Ai
- Department of Obstetrics and Gynecology, Shanghai Sixth People's Hospital, Shanghai Jiaotong University, Shanghai, China
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17
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Li WQ, Wang XL, Qian K, Liu YQ, Wang CY, Yang L, Tian J, Morris-Natschke SL, Zhou XW, Lee KH. Design, synthesis and potent cytotoxic activity of novel podophyllotoxin derivatives. Bioorg Med Chem 2013; 21:2363-2369. [PMID: 23490151 DOI: 10.1016/j.bmc.2013.01.069] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Revised: 01/18/2013] [Accepted: 01/28/2013] [Indexed: 10/27/2022]
Abstract
Twenty new acyl thiourea derivatives of podophyllotoxin and 4'-demethylepipodophyllotoxin were prepared and screened for their cytotoxicity against four human tumor cell lines, A-549, DU-145, KB, and KBvin. With IC50 values of 0.098-1.13 μM, compounds 13b, 13c, and 13o displayed much better cytotoxic activity than the control etoposide. Most importantly, 13b and 13o exhibited promising cytotoxicity against the drug resistant tumor cell line KBvin with IC50 values of 0.098 and 0.13 μM, respectively, while etoposide lost activity completely. Structure-activity relationship (SAR) correlations of the new derivatives have been established. Compounds 13b and 13o merit further development as a new generation of epipodophyllotoxin-derived antitumor clinical trial candidates.
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Affiliation(s)
- Wen-Qun Li
- School of Pharmacy, Lanzhou University, Lanzhou 730000, PR China
| | - Xu-Li Wang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, PR China
| | - Keduo Qian
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, United States
| | - Ying-Qian Liu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, PR China.
| | - Chih-Ya Wang
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, United States
| | - Liu Yang
- Environmental and Municipal Engineering School, Lanzhou Jiaotong University, Lanzhou 730000, PR China
| | - Jin Tian
- School of Pharmacy, Lanzhou University, Lanzhou 730000, PR China
| | - Susan L Morris-Natschke
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, United States
| | - Xing-Wen Zhou
- School of Pharmacy, Lanzhou University, Lanzhou 730000, PR China
| | - Kuo-Hsiung Lee
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, United States; Chinese Medicine Research and Development Center, China Medical University and Hospital, Taichung, Taiwan.
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18
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Kamal A, Tamboli JR, Vishnuvardhan MVPS, Adil SF, Nayak VL, Ramakrishna S. Synthesis and anticancer activity of heteroaromatic linked 4β-amido podophyllotoxins as apoptotic inducing agents. Bioorg Med Chem Lett 2012. [PMID: 23182091 DOI: 10.1016/j.bmcl.2012.10.099] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A series of different heteroaromatic linked 4β-amidopodophyllotoxin conjugates (16a-i, 17a-i and 18a-d) were synthesized and evaluated for anticancer activity against five human cancer cell lines. Among the series, one of the compound 17g showed significant antiproliferative activity in A549 (lung cancer) cell line. Flow cytometric analysis showed that 17g arrested the cell cycle in the G2/M phase leading to caspase-3 dependent apoptotic cell death. Further, Hoechst 33258 staining and DNA fragmentation assay also suggests that 17g induces cell death by apoptosis.
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Affiliation(s)
- Ahmed Kamal
- Division of Organic Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, India.
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19
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20
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Abad A, López-Pérez JL, del Olmo E, García-Fernández LF, Francesch A, Trigili C, Barasoain I, Andreu JM, Díaz JF, San Feliciano A. Synthesis and Antimitotic and Tubulin Interaction Profiles of Novel Pinacol Derivatives of Podophyllotoxins. J Med Chem 2012; 55:6724-37. [DOI: 10.1021/jm2017573] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Andrés Abad
- Departamento de Química
Farmacéutica, Facultad de Farmacia-CIETUS, Campus Unamuno, Universidad de Salamanca, 37007 Salamanca, Spain
- Departamento de Química,
Facultad de Ciencias, Universidad de Los Andes, Mérida, Venezuela
| | - José L. López-Pérez
- Departamento de Química
Farmacéutica, Facultad de Farmacia-CIETUS, Campus Unamuno, Universidad de Salamanca, 37007 Salamanca, Spain
| | - Esther del Olmo
- Departamento de Química
Farmacéutica, Facultad de Farmacia-CIETUS, Campus Unamuno, Universidad de Salamanca, 37007 Salamanca, Spain
| | | | - Andrés Francesch
- PharmaMar SA, P. I. La Mina, 28770 Colmenar
Viejo, Madrid, Spain
| | - Chiara Trigili
- Centro de Investigaciones Biológicas, CSIC,
28006 Madrid, Spain
| | | | - José M. Andreu
- Centro de Investigaciones Biológicas, CSIC,
28006 Madrid, Spain
| | | | - Arturo San Feliciano
- Departamento de Química
Farmacéutica, Facultad de Farmacia-CIETUS, Campus Unamuno, Universidad de Salamanca, 37007 Salamanca, Spain
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21
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Wang YJ, Chen XG, Xiao ZY, Liu GT, Sun H. Induction of cell cycle arrest by GL331 via triggering an ATM-dependent DNA damage response in HepG2 cells. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2012; 14:657-664. [PMID: 22583615 DOI: 10.1080/10286020.2012.684683] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
GL331, a topoisomerase II inhibitor, has been found to trigger DNA damage response (DDR) to induce cell cycle arrest. However, the underlying mechanism has not yet been fully understood. This study investigated the molecular mechanism involved in the GL331-induced cell cycle arrest via DDR in human hepatocellular carcinoma HepG2 cells. As a result, GL331 could induce S arrest and up-regulate the phosphorylation of the histone H2AX variant (γ-H2AX). Ataxia telangiectasia mutated protein kinase (ATM) was activated by GL331 through its autophosphorylation at Ser1981, which led to the activation of DNA damage signaling pathways including p53/p21 and Chk2/Cdc25A cascades. The DNA damage cascades triggered by GL331 finally induced the inactivation of cyclin A/Cdk2 complexes to some extent. These phenomena could be reversed by ATM siRNA, followed by a partial disruption of S arrest. The present results suggested that the S arrest induced by GL331 via DDR was in an ATM-dependent manner to some degree.
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Affiliation(s)
- Ya-Jie Wang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Department of Pharmacology, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, China
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22
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23
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Gupta ML, Dutta A. Stress-Mediated Adaptive Response Leading to Genetic Diversity and Instability in Metabolite Contents of High Medicinal Value: An Overview onPodophyllum hexandrum. OMICS-A JOURNAL OF INTEGRATIVE BIOLOGY 2011; 15:873-82. [DOI: 10.1089/omi.2011.0096] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Manju Lata Gupta
- Radioprotective Drug Development Group, Division of Radiation Biosciences, Institute of Nuclear Medicine and Allied Sciences, Brig.S.K Mazumdar Marg, Delhi, India
| | - Ajaswrata Dutta
- Radioprotective Drug Development Group, Division of Radiation Biosciences, Institute of Nuclear Medicine and Allied Sciences, Brig.S.K Mazumdar Marg, Delhi, India
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24
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Kamal A, Suresh P, Janaki Ramaiah M, Mallareddy A, Kumar BA, Raju P, Vinay Gopal J, Pushpavalli S, Lavanya A, Sarma P, Pal-Bhadra M. Synthesis and biological evaluation of 4β-acrylamidopodophyllotoxin congeners as DNA damaging agents. Bioorg Med Chem 2011; 19:4589-600. [DOI: 10.1016/j.bmc.2011.06.017] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2011] [Revised: 06/02/2011] [Accepted: 06/03/2011] [Indexed: 11/26/2022]
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25
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Kamal A, Suresh P, Mallareddy A, Kumar BA, Reddy PV, Raju P, Tamboli JR, Shaik TB, Jain N, Kalivendi SV. Synthesis of a new 4-aza-2,3-didehydropodophyllotoxin analogues as potent cytotoxic and antimitotic agents. Bioorg Med Chem 2011; 19:2349-58. [DOI: 10.1016/j.bmc.2011.02.020] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2010] [Revised: 02/10/2011] [Accepted: 02/11/2011] [Indexed: 11/24/2022]
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26
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Zhao Y, Ge CW, Wu ZH, Wang CN, Fang JH, Zhu L. Synthesis and evaluation of aroylthiourea derivatives of 4-β-amino-4'-O-demethyl-4-desoxypodophyllotoxin as novel topoisomerase II inhibitors. Eur J Med Chem 2011; 46:901-6. [DOI: 10.1016/j.ejmech.2011.01.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2010] [Revised: 12/22/2010] [Accepted: 01/04/2011] [Indexed: 11/30/2022]
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27
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Synthesis and antitumor activity of novel aroylthiourea derivatives of podophyllotoxin. Invest New Drugs 2010; 30:17-24. [PMID: 20697773 DOI: 10.1007/s10637-010-9508-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2010] [Accepted: 07/26/2010] [Indexed: 10/19/2022]
Abstract
A novel series of 4β-[(4-substituted) aroylthiourea] derivatives of podophyllotoxin were synthesized and their abilities to inhibit the growth of cancer cells were investigated by MTT assay. Compound 4a possessed the highest cytotoxicity on HepG2, A549 and HCT-116 cancer cell lines with the IC(50) values of 0.1 μM. Apoptosis in HCT-116 cells induced by compound 4a was observed by Hoechst33342-Propidium iodide (PI) and acridine orange (AO)-ethidium bromide (EB) double staining assays. DNA flow cytometric analysis revealed that 4a induced cell cycle arrest at G2/M phase and kDNA decatenation assay indicated that 4a inhibited topoisomerase IIα-mediated kDNA decatenation. Our results indicated that compound 4a possessed promising antitumor activity, which need to be studied further.
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28
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Castro MÁ, Miguel del Corral JM, García PA, Rojo MV, de la Iglesia-Vicente J, Mollinedo F, Cuevas C, San Feliciano A. Synthesis and Biological Evaluation of New Podophyllic Aldehyde Derivatives with Cytotoxic and Apoptosis-Inducing Activities. J Med Chem 2010; 53:983-93. [DOI: 10.1021/jm901373w] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- M Ángeles Castro
- Departamento de Química Farmacéutica, Facultad de Farmacia, Campus Miguel de Unamuno, Universidad de Salamanca, E-37007 Salamanca, Spain
| | - José M Miguel del Corral
- Departamento de Química Farmacéutica, Facultad de Farmacia, Campus Miguel de Unamuno, Universidad de Salamanca, E-37007 Salamanca, Spain
| | - Pablo A. García
- Departamento de Química Farmacéutica, Facultad de Farmacia, Campus Miguel de Unamuno, Universidad de Salamanca, E-37007 Salamanca, Spain
| | - M Victoria Rojo
- Departamento de Química Farmacéutica, Facultad de Farmacia, Campus Miguel de Unamuno, Universidad de Salamanca, E-37007 Salamanca, Spain
| | - Janis de la Iglesia-Vicente
- Centro de Investigación del Cáncer, Instituto de Biología Molecular y Celular del Cáncer, CSIC−Universidad de Salamanca, Campus Miguel de Unamuno, E-37007 Salamanca, Spain
| | - Faustino Mollinedo
- Centro de Investigación del Cáncer, Instituto de Biología Molecular y Celular del Cáncer, CSIC−Universidad de Salamanca, Campus Miguel de Unamuno, E-37007 Salamanca, Spain
| | - Carmen Cuevas
- PharmaMar S.A., Avenida de los Reyes, P.I. La Mina Norte, E-28770 Colmenar Viejo, Madrid, Spain
| | - Arturo San Feliciano
- Departamento de Química Farmacéutica, Facultad de Farmacia, Campus Miguel de Unamuno, Universidad de Salamanca, E-37007 Salamanca, Spain
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29
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Chou SL, Chou MY, Kao WF, Yen DHT, Yen LY, Huang CI, Lee CH. Bajiaolian poisoning-a poisoning with high misdiagnostic rate. Am J Emerg Med 2010; 28:85-9. [PMID: 20006208 DOI: 10.1016/j.ajem.2008.09.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2008] [Revised: 09/14/2008] [Accepted: 09/17/2008] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND One of the oldest Chinese herbal medicine, bajiaolian is widely used in traditional therapy. In Taiwan, bajiaolian is the fifth highest cause of poisoning among herbal medicines. The diagnosis is difficult because physicians are unfamiliar with this medicine's multiple presentations in different stages of intoxication. PROCEDURES The records of 4 major poison centers in Taiwan were searched for all bajiaolian intoxication from July 1985 (the opening of first poison center) to March 2003. Two emergency physicians with toxicologic training reviewed the admission charts and visited case patients for follow-up. FINDINGS Seventeen patients were identified, of which 15 (88.2%) had been misdiagnosed initially. In the beginning of their medical care, 14 cases were diagnosed as acute gastroenteritis. CONCLUSION Bajiaolian intoxication is probably misdiagnosed because of early gastrointestinal symptoms followed by neurologic symptoms. A detailed patient history should be taken, and symptoms should be reviewed systemically to improve diagnostic accuracy.
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Affiliation(s)
- Shang-Lin Chou
- Institute of Emergency Medicine and Critical Care Medicine, National Yang-Ming University, Taipei 11221, Taiwan, ROC
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30
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Chen YQ, Xie X. Podophyllotoxin induces CREB phosphorylation and CRE-driven gene expression via PKA but not MAPKs. Mol Cells 2010; 29:41-50. [PMID: 20033853 DOI: 10.1007/s10059-010-0015-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2009] [Revised: 10/15/2009] [Accepted: 10/20/2009] [Indexed: 12/11/2022] Open
Abstract
CRE-driven luciferase reporter is commonly used in drug screening systems involving G protein-coupled receptors (GPCRs). In a screen campaign designed to search for melanocortin-4 receptor (MC4R) agonists, podophyllotoxin, a microtubules disruptor, was found to induce cAMP-responsive element (CRE)-driven reporter expression. MC4R was not involved because podophyllotoxin induced CREB activation and CRE-driven transcription in cells not expressing MC4R. Previous studies indicated that intracellular calcium, PKA, and MAPKs are involved in CREB phosphorylation and activation. Our studies revealed that podophyllotoxin did not affect intracellular calcium level and the phosphorylation state of p38. Podophyllotoxin induced JNK and ERK activation, but blockade of JNK and ERK activation with specific inhibitors had no effect on podophyllotoxin-induced CREB activation and CRE-regulated gene expression. Further experiments revealed that H89, a specific inhibitor of PKA, significantly inhibited podophyllotoxin-induced CREB activation. Podophyllotoxin itself did not alter intracellular cAMP level. Taken together, podophyllotoxin induces CREB activation and CRE-driven gene expression via PKA activation by a cAMP-independent mechanism.
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Affiliation(s)
- Ya Qiong Chen
- State Key Laboratory of Drug Research, National Center for Drug Screening, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
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31
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Chen SW, Xiang R, Tian X. Synthesis of New Conjugates of Modified Podophyllotoxin and Stavudine. Helv Chim Acta 2009. [DOI: 10.1002/hlca.200900012] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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32
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Synthesis and biological evaluation of novel conjugates of podophyllotoxin and 5-FU as antineoplastic agents. Bioorg Med Chem 2009; 17:3111-7. [DOI: 10.1016/j.bmc.2009.03.009] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2009] [Revised: 02/28/2009] [Accepted: 03/03/2009] [Indexed: 11/17/2022]
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33
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Lata H, Mizuno CS, Moraes RM. The role of biotechnology in the production of the anticancer compound podophyllotoxin. Methods Mol Biol 2009; 547:387-402. [PMID: 19521861 DOI: 10.1007/978-1-60327-287-2_31] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Podophyllotoxin is a plant-derived compound found in Podophyllum sp. that is used to produce semi-synthetic anticancer pharmaceuticals such as etoposide, teniposide, and etoposide phosphate. This chapter describes the role of biotechnology to produce podophyllotoxin and our attempts to domesticate Podophyllum peltatum L., also known as the American mayapple. The domestication research on mayapple included surveys of the natural population, identification of high yielding genotypes, propagation, cultivation, sustainable harvest procedures and the development of protocols for in vitro germplasm bank.
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Affiliation(s)
- Hemant Lata
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS, USA
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34
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Chou SL, Chou MY, Kao WF, Yen DHT, Huang CI, Lee CH. Cessation of nail growth following Bajiaolian intoxication. Clin Toxicol (Phila) 2007; 46:159-63. [PMID: 17852156 DOI: 10.1080/15563650701397159] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Bajiaolian (Dysosma pleianthum), a species in the Mayapple family (Podophyllum pelatum), has been widely used as a traditional Chinese herbal medication for the remedies of snake bite, tumor growth, post-partum recovery, and acne. It has also been used in western medicine, especially topically for various skin lesions. Both oral ingestion and dermal application may result in severe toxicity. The clinical presentations reported after Bajiaolian poisoning include nausea, vomiting, diarrhea, abdominal cramps, tachycardia, orthostatic hypotension, paralytic ileus, urinary retention, hepatorenal dysfunction, leukocytosis followed by leukopenia, thrombocytopenia, prolonged areflexia, prolonged paraethesia and sensory ataxia, dizziness, fever, memory impairment, hallucinations, paranoia, convulsion, fainting, and coma. There are no previous reports in the literature about the cessation of nail growth as a clinical presentation following Bajiaolian poisoning. We present a case of nail growth that was halted for more than seven years after a single case of Bajiaolian poisoning.
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Affiliation(s)
- Shang-Lin Chou
- Department of Emergency Medicine, Taipei Veterans Hospital, Taipei, Taiwan, Republic of China
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35
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Bertounesque E, Meresse P, Monneret C, Florent JC. Synthetic approach to condensed heterocyclic analogues from etoposide revisited. Synthesis of A-ring pyridazine etoposide. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.06.105] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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36
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Alao JP. The regulation of cyclin D1 degradation: roles in cancer development and the potential for therapeutic invention. Mol Cancer 2007; 6:24. [PMID: 17407548 PMCID: PMC1851974 DOI: 10.1186/1476-4598-6-24] [Citation(s) in RCA: 617] [Impact Index Per Article: 36.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2007] [Accepted: 04/02/2007] [Indexed: 12/15/2022] Open
Abstract
Cyclin D1 is an important regulator of cell cycle progression and can function as a transcriptionl co-regulator. The overexpression of cyclin D1 has been linked to the development and progression of cancer. Deregulated cyclin D1 degradation appears to be responsible for the increased levels of cyclin D1 in several cancers. Recent findings have identified novel mechanisms involved in the regulation of cyclin D1 stability. A number of therapeutic agents have been shown to induce cyclin D1 degradation. The therapeutic ablation of cyclin D1 may be useful for the prevention and treatment of cancer. In this review, current knowledge on the regulation of cyclin D1 degradation is discussed. Novel insights into cyclin D1 degradation are also discussed in the context of ablative therapy. A number of unresolved questions regarding the regulation of cellular cyclin D1 levels are also addressed.
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Affiliation(s)
- John P Alao
- Department of Cell and Molecular Biology, Lundberg Laboratory, Gothenburg University, Gothenburg, Sweden.
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37
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Chen SW, Wang YH, Jin Y, Tian X, Zheng YT, Luo DQ, Tu YQ. Synthesis and anti-HIV-1 activities of novel podophyllotoxin derivatives. Bioorg Med Chem Lett 2007; 17:2091-5. [PMID: 17317161 DOI: 10.1016/j.bmcl.2006.11.070] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2006] [Revised: 10/13/2006] [Accepted: 11/07/2006] [Indexed: 11/23/2022]
Abstract
In order to explore the range of biological activities of the podophyllotoxin compound class, a novel series of derivatives of podophyllotoxin, which were conjugates containing stavudine and different structural podophyllotoxin analogues, were designed, synthesized, and evaluated for their anti-HIV-1 activities in vitro. Among these compounds, 19d and 19c showed the highest anti-HIV-1 activities with EC(50) values of 0.17 and 0.29 microM and TI values of 466.9 and 354.5, respectively.
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Affiliation(s)
- Shi-Wu Chen
- State Key Laboratory of Applied Organic Chemistry, School of Pharmacy, Lanzhou University, Lanzhou 730000, PR China
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38
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López-Pérez JL, Abad A, del Olmo E, Feliciano AS. Correct structures of Diels–Alder adducts from the natural cyclolignan thuriferic acid and its 8-epimer. Tetrahedron 2006. [DOI: 10.1016/j.tet.2005.11.068] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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39
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Duca M, Guianvarc'h D, Meresse P, Bertounesque E, Dauzonne D, Kraus-Berthier L, Thirot S, Léonce S, Pierré A, Pfeiffer B, Renard P, Arimondo PB, Monneret C. Synthesis and biological study of a new series of 4'-demethylepipodophyllotoxin derivatives. J Med Chem 2005; 48:593-603. [PMID: 15658872 DOI: 10.1021/jm0495733] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Etoposide (VP-16) is a potent human DNA topoisomerase II poison, derived from 4'-demethylepipodophyllotoxin, widely used in cancer chemotherapy. Continuous efforts have driven to synthesize new related compounds, presenting decreased toxic side effects, metabolic inactivation, drug resistance, and increased water solubility. Identified structure-activity relationships have pointed out the importance of the 4beta-substitution and of the configuration of the D ring. Here we report the synthesis of two novel series of derivatives of 4'-demethylepipodophyllotoxin. The first bears a carbamate chain in the 4 position (13a-f), whereas, in the second series, in addition to this chain, the lactone ring has been modified by shifting the carbonyl from position 13 to position 11 (27a-f). Moreover, an analogue of TOP-53 having this lactone modification has also been prepared (32). From this study, structure-activity relationships were established. Compounds 13a and 27a displayed potent cytotoxic activity against the L1210 cell line (10 to 20-fold higher than VP-16) and proved to be strong topoisomerase II poisons more potent than VP-16. From preliminary in vivo investigation of both compounds against P388 leukemia and orthotopically grafted human A549 lung carcinoma, it appeared that 13a and 27a constitute promising leads for a new class of antitumor agents.
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Affiliation(s)
- Maria Duca
- Laboratoire de Biophysique, UMR 5153 CNRS, Muséum National d'Histoire Naturelle, USM 0503, INSERM UR565, 43 rue Cuvier, 75231 Paris Cedex 05, France
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40
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Gordaliza M, García PA, del Corral JMM, Castro MA, Gómez-Zurita MA. Podophyllotoxin: distribution, sources, applications and new cytotoxic derivatives. Toxicon 2004; 44:441-59. [PMID: 15302526 DOI: 10.1016/j.toxicon.2004.05.008] [Citation(s) in RCA: 360] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Several podophyllotoxin derivatives modified in the A, B, C, D and E rings were prepared from podophyllotoxin and methyl isoxazopodophyllic acid and evaluated for their cytotoxicity on several neoplastic cell lines. Chemical transformations performed on these compounds have yielded derivatives more potent and more selective that the parent compound. Most of the compounds maintained their cytotoxicity at the microM level. Distribution, biosynthesis, production, biotechnology, applications and synthesis have also been reviewed.
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Affiliation(s)
- M Gordaliza
- Departamento de Química Farmacéutica, Facultad de Farmacia, Universidad de Salamanca, 37007 Salamanca, Spain.
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Castro MA, Miguel del Corral JM, Gordaliza M, García PA, Gómez-Zurita MA, García-Grávalos MD, de la Iglesia-Vicente J, Gajate C, An F, Mollinedo F, San Feliciano A. Synthesis and biological evaluation of new selective cytotoxic cyclolignans derived from podophyllotoxin. J Med Chem 2004; 47:1214-22. [PMID: 14971901 DOI: 10.1021/jm030978h] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Podophyllotoxin and some of its derivatives are cyclolignans currently used for removing warts and in the clinical treatment of malign neoplasms. As such, they have been an objective of the scientific community for decades, in the search for more potent and more selective anticancer agents. Our interest in the chemoinduction of drug selectivity led us to the design and preparation of new podophyllotoxin derivatives by reaction of podophyllic aldehyde with aliphatic, aromatic, and heteroaromatic amines. Several of the resulting imines displayed a significant selectivity against human colon carcinoma cells, even higher than that of the starting aldehyde. Additional biological studies indicate that these derivatives induce microtubule depolymerization, arrest cells at the G2/M phase of cell cycle, and are able to induce a delayed apoptosis after 48 h of treatment, characterized by caspase-3 activation.
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Affiliation(s)
- María Angeles Castro
- Departamento de Química Farmacéutica, Facultad de Farmacia, Universidad de Salamanca, E-37007 Salamanca, Spain.
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Chang H, Shyu KG, Lee CC, Tsai SC, Wang BW, Hsien Lee Y, Lin S. GL331 inhibits HIF-1alpha expression in a lung cancer model. Biochem Biophys Res Commun 2003; 302:95-100. [PMID: 12593853 DOI: 10.1016/s0006-291x(03)00111-6] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
We have studied GL331's anti-cancer mechanisms by studying their effect on the tumor-induced angiogenesis. Human lung adenocarcinoma CL1-5 cells were treated with GL331 and then maintained in serum-reduced, GL331-free medium for the preparation of condition mediums. These condition mediums were tested for their capability to induce in vitro angiogenesis, i.e., HUVEC tube formation and migration. We found that mediums generated from GL331-treated CL1-5 cells presented reduced ability of inducing in vitro angiogenesis. Western blot analyses showed that both VEGF and HIF-1alpha were down-regulated in GL331-treated CL1-5 cells. Northern blot and EMSA analyses showed that GL331 down-regulated HIF-1alpha expression without decreasing the stability of HIF-1alpha mRNA, and that GL331 decreased the binding of CL1-5-derived nuclear components to the promoter of HIF-1alpha gene. Therefore, our data showed that GL331 is a potent inhibitor of tumor-induced angiogenesis. The underlying mechanisms might involve at least the inhibition of HIF-1alpha expression, probably through transcriptional repression.
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Affiliation(s)
- Hang Chang
- The Central Laboratory, Shin Kong Wu Ho-Su Memorial Hospital, 95 Wen Chang Road, Shih Lin, Taipei, Taiwan, ROC
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43
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Huang TS, Lee CC, Chang AC, Lin S, Chao CC, Jou YS, Chu YW, Wu CW, Whang-Peng J. Shortening of microsatellite deoxy(CA) repeats involved in GL331-induced down-regulation of matrix metalloproteinase-9 gene expression. Biochem Biophys Res Commun 2003; 300:901-7. [PMID: 12559958 DOI: 10.1016/s0006-291x(02)02962-5] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Matrix metalloproteinase-9 (MMP-9) associates with cancer cell invasion and metastasis. CL1-5 cells, a human lung adenocarcinoma cell line, expressed an elevated level of MMP-9 and exhibited a highly invasive and metastatic ability. By Matrigel assay and gelatinase zymography, the topoisomerase II poison GL331 was found to dose-dependently inhibit the invasiveness and the level of secreted MMP-9 of CL1-5 cells. Northern blot analysis indicated that cellular MMP-9 mRNA level was decreased after GL331 treatment. Furthermore, GL331-induced down-regulation of mmp-9 gene promoter was demonstrated by using a luciferase reporter gene driven by the -216 to -13 region of the mmp-9 gene promoter cloned from CL1-5 cells. By PCR amplification and gel electrophoresis, we found that GL331 caused shortening of the -216 to -13 region of the mmp-9 promoter. Direct sequencing analysis revealed that the number of d(CA) was reduced from 24 to 18 at the microsatellite d(CA) repeat region of the mmp-9 promoter. The CL1-5 cells transfected with the luciferase reporter containing 18 d(CA)s expressed only 53% of those when the reporter contained 24 d(CA)s. The promoter region of mmp-9 gene contains other positive regulatory elements, such as TRE and kappaB. We found that GL331 did not significantly influence the luciferase activity driven by TRE or kappaB. Taken together, these data suggested that GL331 inhibited MMP-9 mRNA expression at least partly through the selective induction of shortening of microsatellite d(CA) repeats. This is the first report that an anti-cancer agent can inhibit mmp-9 gene expression by inducing microsatellite DNA shortening.
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Affiliation(s)
- Tze-Sing Huang
- Division of Cancer Research, National Health Research Institutes, Taipei, Taiwan, ROC.
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Koda M, Murakami M, Ino H, Yoshinaga K, Ikeda O, Hashimoto M, Yamazaki M, Nakayama C, Moriya H. Brain-derived neurotrophic factor suppresses delayed apoptosis of oligodendrocytes after spinal cord injury in rats. J Neurotrauma 2002; 19:777-85. [PMID: 12165137 DOI: 10.1089/08977150260139147] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
We evaluated the effect of brain-derived neurotrophic factor (BDNF) on cell death after spinal cord injury. A rat spinal cord injury model was produced by static load, and continuous intrathecal BDNF or vehicle infusion was carried out either immediately or 3 days after the injury. Cell death was examined by nuclear staining and terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling (TUNEL). After injury, typical apoptotic cells were observed. Double staining with TUNEL and specific cell markers revealed that, soon after the injury, the apoptotic or necrotic cells at the injury site were neurons and microglia. One week after the injury, apoptotic oligodendrocytes, but not apoptotic astrocytes, were observed in the white matter rostral and caudal to the injury site, whereas few apoptotic cells were found in the gray matter. The immediate BDNF treatment significantly reduced the number of TUNEL-positive cells in the adjacent rostral site 1 and 2 weeks after the injury, and in the adjacent caudal site 3 days and 1 week after the injury, even though there was no significant difference between BDNF-treated and control rats at the injury site itself. In addition, similar antiapoptotic effects were observed in these regions 1 week after injury in rats that received BDNF treatment from the third day after injury. These findings suggest that BDNF suppresses delayed apoptosis of oligodendrocytes after spinal cord injury, for which even delayed injections are effective. BDNF administration may therefore be useful for the clinical treatment of spinal cord injury through the suppression of secondary events.
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Affiliation(s)
- Masao Koda
- Department of Orthopaedic Surgery, Chiba University Graduate School of Medicine, Chiba, Japan.
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Wrasidlo W, Schröder U, Bernt K, Hübener N, Shabat D, Gaedicke G, Lode H. Synthesis, hydrolytic activation and cytotoxicity of etoposide prodrugs. Bioorg Med Chem Lett 2002; 12:557-60. [PMID: 11844671 DOI: 10.1016/s0960-894x(01)00801-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Two 4'-propylcarbonoxy derivatives (2,3) of etoposide (1), a topoisomerase II inhibitor, were synthesized and evaluated as potential prodrugs for anticancer therapy. Their activation via hydrolysis mechanisms was determined as a function of pH in buffer solutions, in human serum and in the presence of carboxyl ester hydrolase. Cytotoxicity was determined on various tumor cell lines and compared to the parent compound. On cell lines exhibiting resistance to etoposide we observed an enhanced cytotoxicity of the prodrugs of up to three orders of magnitude.
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Affiliation(s)
- Wolf Wrasidlo
- Charité Children's Hospital, Humboldt University, Augustenburger Platz 1, 13353 Berlin, Germany.
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Lee CC, Huang TS. A novel topoisomerase II poison GL331 preferentially induces DNA cleavage at (C/G)T sites and can cause telomere DNA damage. Pharm Res 2001; 18:846-51. [PMID: 11474790 DOI: 10.1023/a:1011048831698] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
PURPOSE Topoisomerase II (Topo II) preferentially cuts DNA at alternating purine-pyrimidine repeats. Different Topo II poisons may affect Topo II to produce distinct drug-specific DNA cleavage patterns. GL331 is a new podophyllotoxin derivative exhibiting potent Topo II-poisoning activity. Therefore, the sequence selectivity of GL331-induced DNA cleavage was determined. METHODS Human gastric adenocarcinoma SC-M1 cells were treated with GL331, and the resultant DNA fragments were isolated by SDS-K+ precipitation. These DNA fragments were further cloned and sequenced to exhibit GL331-induced DNA cleavage sites. In addition, the telomere damage was detected by Southern blot analyses using a (TTAGGG)4 probe. GL331's effect on telomerase was examined using the TRAP assay. RESULTS The selective sequences of GL331-induced DNA cleavage were analyzed. The first nucleotide 3'-terminal to the cleavage sites was preferentially C or G and followed by the second nucleotide T. More than 50% of GL331-induced DNA cleavage fragments exhibited AT-rich sequences in the first 20 nucleotides. In addition, the telomeric damage was observed both from GL331-treated SC-M1 cells and in vitro incubation of genomic DNA with GL331 and purified human Topo II. Although GL331 treatment reduced cellular telomerase activity, in vitro reaction data suggested that GL331 was not a telomerase inhibitor. CONCLUSION GL331 preferentially induced Topo II-mediated DNA cleavage at (C/G)T sites. Because the telomeric repeat sequence contains GL331's GT preference site, the telomere was identified as one of the targets of GL331-induced DNA damage.
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Affiliation(s)
- C C Lee
- Cooperative Laboratory at Veterans General Hospital-Taipei, Cancer Research Division, Taiwan, Republic of China
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Huang TS, Shu CH, Chao Y, Chen LT. Evaluation of GL331 in combination with paclitaxel: GL331's interference with paclitaxel-induced cell cycle perturbation and apoptosis. Anticancer Drugs 2001; 12:259-66. [PMID: 11290873 DOI: 10.1097/00001813-200103000-00011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Combination of selecting agents that act on different cellular mechanisms is a common strategy in cancer chemotherapy. GL331 is a new potent topoisomerase II (Topo II) poison; distinctly, paclitaxel is a microtubule-interfering cancer chemotherapeutic agent. In this study, we intended to evaluate the efficacy of combining GL331 with paclitaxel in cell killing and apoptotic induction in nasopharyngeal carcinoma NPC-TW01 cells. By MTT and internucleosomal DNA cleavage assays, we found that pretreatment or simultaneous treatment of NPC-TW01 cells with GL331 could significantly interfere with paclitaxel's cell killing and apoptosis-inducing activity. When the administration schedule was reversed, the cytotoxicity of GL331 was attenuated by paclitaxel pretreatment. The anti-cancer activity produced by combining GL331 with paclitaxel was obviously lower than the addition of the activities of two individual agents. NPC-TW01 cells were treated with GL331 and 3H-labeled paclitaxel simultaneously or with GL331 before 3H-labeled paclitaxel. In both conditions, GL331 did not reduce the [3H]paclitaxel level in the cells, suggesting that GL331's interference with paclitaxel's cell-killing and apoptosis-inducing efficacy did not result from any inhibition of cellular uptake or retention of paclitaxel. In addition, we found that GL331-induced perturbation of cell cycle progression dramatically over-rode the patterns of mitotic arrest induced by paclitaxel, and the mechanism could be the inhibition of cyclin B1/CDC2 kinase and MAD2 checkprotein activities.
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Affiliation(s)
- T S Huang
- Cooperative Laboratory, Cancer Research Division, National Health Research Institutes; Taipei, Taiwan, ROC.
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Abstract
Podophyllin, an ethanolic extract of Podophyllum peltatum L. or P. emodi Wall (syn. P. hexandnum Royle), is a good source of the aryltetralin-type lignan, podophyllotoxin. The latter compound, as well as its congeners and derivatives exhibit pronounced biological activity mainly as strong antiviral agents and as antineoplastic drugs. The podophyllotoxin derivatives etoposide, etopophos (etoposide phosphate), and teniposide are thus successfully utilized in the treatment of a variety of malignant conditions. Continued research on the Podophyllum lignans is currently focused on structure optimization to generate derivatives with superior pharmacological profiles and broader therapeutic scope, and the development of alternative and renewable sources of podophyllotoxin.
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Affiliation(s)
- C Canel
- USDA, ARS, NPURU, National Center for Natural Products Research, University of Mississippi, University 38677, USA
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