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Lu N, Wu J, Tian M, Zhang S, Li Z, Shi L. Comprehensive review on the elaboration of payloads derived from natural products for antibody-drug conjugates. Eur J Med Chem 2024; 268:116233. [PMID: 38408390 DOI: 10.1016/j.ejmech.2024.116233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 02/08/2024] [Accepted: 02/10/2024] [Indexed: 02/28/2024]
Abstract
Antibody-drug conjugates (ADCs) have arisen as a promising class of biotherapeutics for targeted cancer treatment, combining the specificity of monoclonal antibodies with the cytotoxicity of small-molecule drugs. The choice of an appropriate payload is crucial for the success development of ADCs, as it determines the therapeutic efficacy and safety profile. This review focuses on payloads derived from natural products, including cytotoxic agents, DNA-damaging agents, and immunomodulators. These offer several advantages such as diverse chemical structures, unique mechanism of actions, and potential for improved therapeutic index. Challenges and opportunities associated with their development were highlighted. This review underscores the significance of natural product payloads in the elaboration of ADCs, which serves as a valuable resource for researchers involved in developing and optimizing next-generation ADCs for cancer treatment.
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Affiliation(s)
- Nan Lu
- XDC Analytical Sciences, WuXi XDC Co., Ltd., 520 Fute North Road, Pilot Free Trade Zone, Pudong New Area, Shanghai, 200131, China
| | - Jiaqi Wu
- XDC Analytical Sciences, WuXi XDC Co., Ltd., 520 Fute North Road, Pilot Free Trade Zone, Pudong New Area, Shanghai, 200131, China
| | - Mengwei Tian
- XDC Analytical Sciences, WuXi XDC Co., Ltd., 520 Fute North Road, Pilot Free Trade Zone, Pudong New Area, Shanghai, 200131, China
| | - Shanshan Zhang
- XDC Analytical Sciences, WuXi XDC Co., Ltd., 520 Fute North Road, Pilot Free Trade Zone, Pudong New Area, Shanghai, 200131, China.
| | - Zhiguo Li
- XDC Analytical Sciences, WuXi XDC Co., Ltd., 520 Fute North Road, Pilot Free Trade Zone, Pudong New Area, Shanghai, 200131, China.
| | - Liming Shi
- XDC Analytical Sciences, WuXi XDC Co., Ltd., 520 Fute North Road, Pilot Free Trade Zone, Pudong New Area, Shanghai, 200131, China.
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2
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Kollath DR, Morales MM, Itogawa AN, Mullaney D, Lee NR, Barker BM. Combating the Dust Devil: Utilizing Naturally Occurring Soil Microbes in Arizona to Inhibit the Growth of Coccidioides spp., the Causative Agent of Valley Fever. J Fungi (Basel) 2023; 9:jof9030345. [PMID: 36983513 PMCID: PMC10056400 DOI: 10.3390/jof9030345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 03/07/2023] [Accepted: 03/09/2023] [Indexed: 03/18/2023] Open
Abstract
The fungal disease Valley fever causes a significant medical and financial burden for affected people in the endemic region, and this burden is on the rise. Despite the medical importance of this disease, little is known about ecological factors that influence the geographic point sources of high abundance of the pathogens Coccidioides posadasii and C. immitis, such as competition with co-occurring soil microbes. These “hot spots”, for instance, those in southern Arizona, are areas in which humans are at greater risk of being infected with the fungus due to consistent exposure. The aim of this study was to isolate native microbes from soils collected from Tucson, Arizona (endemic area for C. posadasii) and characterize their relationship (antagonistic, synergistic, or neutral) to the fungal pathogen with in vitro challenge assays. Secreted metabolites from the microbes were extracted and described using analytical techniques including high-performance liquid chromatography (HPLC) and mass spectrometry. Bacteria belonging to the genus Bacillus and fungi in the Fennellomyces and Ovatospora genera were shown to significantly decrease the growth of Coccidioides spp. In vitro. In contrast, other bacteria in the Brevibacillus genus, as well as one species of Bacillus bacteria, were shown to promote growth of Coccidioides when directly challenged. The metabolites secreted from the antagonistic bacteria were described using HPLC and matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS). The microbes identified in this study as antagonists to Coccidioides and/or the metabolites they secrete have the potential to be used as natural biocontrol agents to limit the amount of fungal burden at geographic point sources, and therefore limit the potential for human infection.
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Affiliation(s)
- Daniel R. Kollath
- The Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, AZ 86011, USA
- Correspondence: ; Tel.: +1-708-280-5867
| | - Matthew M. Morales
- The Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, AZ 86011, USA
| | - Ashley N. Itogawa
- The Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, AZ 86011, USA
| | - Dustin Mullaney
- Department of Chemistry and Biochemistry, Northern Arizona University, Flagstaff, AZ 86011, USA
| | - Naomi R. Lee
- Department of Chemistry and Biochemistry, Northern Arizona University, Flagstaff, AZ 86011, USA
| | - Bridget M. Barker
- The Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, AZ 86011, USA
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3
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Zhang JN, Xia YX, Zhang HJ. Natural Cyclopeptides as Anticancer Agents in the Last 20 Years. Int J Mol Sci 2021; 22:3973. [PMID: 33921480 PMCID: PMC8068844 DOI: 10.3390/ijms22083973] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 04/06/2021] [Accepted: 04/09/2021] [Indexed: 12/24/2022] Open
Abstract
Cyclopeptides or cyclic peptides are polypeptides formed by ring closing of terminal amino acids. A large number of natural cyclopeptides have been reported to be highly effective against different cancer cells, some of which are renowned for their clinical uses. Compared to linear peptides, cyclopeptides have absolute advantages of structural rigidity, biochemical stability, binding affinity as well as membrane permeability, which contribute greatly to their anticancer potency. Therefore, the discovery and development of natural cyclopeptides as anticancer agents remains attractive to academic researchers and pharmaceutical companies. Herein, we provide an overview of anticancer cyclopeptides that were discovered in the past 20 years. The present review mainly focuses on the anticancer efficacies, mechanisms of action and chemical structures of cyclopeptides with natural origins. Additionally, studies of the structure-activity relationship, total synthetic strategies as well as bioactivities of natural cyclopeptides are also included in this article. In conclusion, due to their characteristic structural features, natural cyclopeptides have great potential to be developed as anticancer agents. Indeed, they can also serve as excellent scaffolds for the synthesis of novel derivatives for combating cancerous pathologies.
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Affiliation(s)
| | | | - Hong-Jie Zhang
- Teaching and Research Division, School of Chinese Medicine, Hong Kong Baptist University, Kowloon, Hong Kong SAR, China; (J.-N.Z.); (Y.-X.X.)
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4
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Saad MH, El-Fakharany EM, Salem MS, Sidkey NM. The use of cyanobacterial metabolites as natural medical and biotechnological tools: review article. J Biomol Struct Dyn 2020; 40:2828-2850. [PMID: 33164673 DOI: 10.1080/07391102.2020.1838948] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Cyanobacteria are photosynthetic, Gram-negative bacteria that are considered one of the most morphologically diverse groups of prokaryotes with a chief role in the global nutrient cycle as they fixed gaseous carbon dioxide and nitrogen to organic materials. Cyanobacteria have significant adaptability to survive in harsh conditions due to they have different metabolic pathways with unique compounds, effective defensive mechanisms, and wide distribution in different habitats. Besides, they are successfully used to face different challenges in several fields, including industry, aquaculture, agriculture, food, dairy products, pollution control, bioenergy, and pharmaceutics. Analysis of 680 publications revealed that nearly 1630 cyanobacterial molecules belong to different families have a wide range of applications in several fields, including cosmetology, agriculture, pharmacology (immunosuppressant, anticancer, antibacterial, antiprotozoal, antifungal, anti-inflammatory, antimalarial, anticoagulant, anti-tuberculosis, antitumor, and antiviral activities) and food industry. In this review, we nearly mentioned 92 examples of cyanobacterial molecules that are considered the most relevant effects related to anti-inflammatory, antioxidant, antimicrobial, antiviral, and anticancer activities as well as their roles that can be used in various biotechnological fields. These cyanobacterial products might be promising candidates for fighting various diseases and can be used in managing viral and microbial infections.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Mabroka H Saad
- Protein Research Department, Genetic Engineering and Biotechnology Research Institute (GEBRI), City of Scientific Research and Technology Applications (SRTA-City), New Borg EL Arab, Alexandria, Egypt.,Botany & Microbiology Department, Faculty of Science, Al Azhar University (Girls Branch), Nasr City, Egypt
| | - Esmail M El-Fakharany
- Protein Research Department, Genetic Engineering and Biotechnology Research Institute (GEBRI), City of Scientific Research and Technology Applications (SRTA-City), New Borg EL Arab, Alexandria, Egypt
| | - Marwa S Salem
- Botany & Microbiology Department, Faculty of Science, Al Azhar University (Girls Branch), Nasr City, Egypt
| | - Nagwa M Sidkey
- Botany & Microbiology Department, Faculty of Science, Al Azhar University (Girls Branch), Nasr City, Egypt
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Lai Q, Wu M, Wang R, Lai W, Tao Y, Lu Y, Wang Y, Yu L, Zhang R, Peng Y, Jiang X, Fu Y, Wang X, Zhang Z, Guo C, Liao W, Zhang Y, Kang T, Chen H, Yao Y, Gou L, Yang J. Cryptophycin-55/52 based antibody-drug conjugates: Synthesis, efficacy, and mode of action studies. Eur J Med Chem 2020; 199:112364. [PMID: 32402935 DOI: 10.1016/j.ejmech.2020.112364] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 04/17/2020] [Accepted: 04/18/2020] [Indexed: 02/05/2023]
Abstract
Cryptophycin-52 (CR52), a tubulin inhibitor, exhibits promising antitumor activity in vitro (picomolar level) and in mouse xenograft models. However, the narrow therapeutic window in clinical trials limits its further development. Antibody-drug conjugate (ADC), formed by coupling cytotoxic compound (payload) to an antibody via a linker, can deliver drug to tumor locations in a targeted manner by antibody, enhancing the therapeutic effects and reducing toxic and side effects. In this study, we aim to explore the possibility of CR52-based ADC for tumor targeted therapy. Due to the lack of a coupling site in CR52, its prodrug cryptophycin-55 (CR55) containing a free hydroxyl was synthesized and conjugated to the model antibody trastuzumab (anti-HER2 antibody drug approved by FDA for breast cancer therapy) via the linkers based on Mc-NHS and Mc-Val-Cit-PAB-PNP. The average drug-to-antibody ratios (DARs) of trastuzumab-CR55 conjugates (named T-L1-CR55, T-L2-CR55, and T-L3-CR55) were 3.50, 3.29, and 3.35, respectively. These conjugates exhibited potent cytotoxicity in HER2-positive tumor cell lines with IC50 values at low nanomolar levels (0.58-1.19 nM). Further, they displayed significant antitumor activities at the doses of 10 mg/kg in established ovarian cancer (SKOV3) and gastric cancer (NCI-N87) xenograft models without overt toxicities. Finally, the drug releases were analyzed and the results indicated that T-L3-CR55 was able to effectively release CR55 and further epoxidized to CR52, which may be responsible for its best performance in antitumor activities. In conclusion, our results demonstrated that these conjugates have the potential for tumor targeted therapy, which provides insights to further research the CR55/CR52-based ADC for tumor therapy.
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Affiliation(s)
- Qinhuai Lai
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, PR China
| | - Mengdan Wu
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, PR China
| | - Ruixue Wang
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, PR China
| | - Weirong Lai
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, PR China
| | - Yiran Tao
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, PR China
| | - Ying Lu
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, PR China; West China School of Public Health and West China Fourth Hospital, Healthy Food Evaluation Research Center/ Sichuan University, Chengdu, PR China
| | - Yuxi Wang
- Department of Respiratory and Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, PR China
| | - Lin Yu
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, PR China; Department of Clinical Laboratory, Mianyang Central Hospital, Mianyang, PR China
| | - Ruirui Zhang
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, PR China
| | - Yujia Peng
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, PR China
| | - Xiaohua Jiang
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, PR China
| | - Yuyin Fu
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, PR China
| | - Xin Wang
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, PR China
| | - Zhixiong Zhang
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, PR China
| | - Cuiyu Guo
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, PR China
| | - Wei Liao
- The 32265 Army Hospital of PLA, Guangzhou, PR China
| | - Yiwen Zhang
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, PR China
| | - Tairan Kang
- College of Pharmacy and Biological Engineering, Chengdu University, Chengdu, PR China
| | - Hao Chen
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, PR China
| | - Yuqin Yao
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, PR China; West China School of Public Health and West China Fourth Hospital, Healthy Food Evaluation Research Center/ Sichuan University, Chengdu, PR China
| | - Lantu Gou
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, PR China
| | - Jinliang Yang
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, PR China; Research Unit of Gene and Immunotherapy, Chinese Academy of Medical Sciences, Beijing, PR China.
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6
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Thuan NH, An TT, Shrestha A, Canh NX, Sohng JK, Dhakal D. Recent Advances in Exploration and Biotechnological Production of Bioactive Compounds in Three Cyanobacterial Genera: Nostoc, Lyngbya, and Microcystis. Front Chem 2019; 7:604. [PMID: 31552222 PMCID: PMC6734169 DOI: 10.3389/fchem.2019.00604] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 08/16/2019] [Indexed: 12/21/2022] Open
Abstract
Cyanobacteria, are only Gram-negative bacteria with the capacity of oxygenic photosynthesis, so termed as “Cyanophyta” or “blue-green algae.” Their habitat is ubiquitous, which includes the diverse environments, such as soil, water, rock and other organisms (symbiosis, commensalism, or parasitism, etc.,). They are characterized as prominent producers of numerous types of important compounds with anti-microbial, anti-viral, anti-inflammatory and anti-tumor properties. Among the various cyanobacterial genera, members belonging to genera Nostoc, Lyngbya, and Microcystis possess greater attention. The major reason for that is the strains belonging to these genera produce the compounds with diverse activities/structures, including compounds in preclinical and/or clinical trials (cryptophycin and curacin), or the compounds retaining unique activities such as protease inhibitor (micropeptins and aeruginosins). Most of these compounds were tested for their efficacy and mechanism of action(MOA) through in vitro and/or in vivo studies. Recently, the advances in culture techniques of these cyanobacteria, and isolation, purification, and chromatographic analysis of their compounds have revealed insurmountable novel bioactive compounds from these cyanobacteria. This review provides comprehensive update on the origin, isolation and purification methods, chemical structures and biological activities of the major compounds from Nostoc, Lyngbya, and Microcystis. In addition, multi-omics approaches and biotechnological production of compounds from selected cyanobacterial genera have been discussed.
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Affiliation(s)
- Nguyen Huy Thuan
- Center for Molecular Biology, Institute of Research and Development, Duy Tan University, Danang, Vietnam
| | - Tran Tuan An
- Center for Molecular Biology, Institute of Research and Development, Duy Tan University, Danang, Vietnam
| | - Anil Shrestha
- Department of Life Science and Biochemical Engineering, Sun Moon University, Chungnam, South Korea
| | - Nguyen Xuan Canh
- Faculty of Biotechnology, Vietnam National University of Agriculture, Gialam, Hanoi, Vietnam
| | - Jae Kyung Sohng
- Department of Life Science and Biochemical Engineering, Sun Moon University, Chungnam, South Korea.,Department of BT-Convergent Pharmaceutical Engineering, Sun Moon University, Chungnam, South Korea
| | - Dipesh Dhakal
- Department of Life Science and Biochemical Engineering, Sun Moon University, Chungnam, South Korea
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7
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Sacco PC, Gridelli C. An update on the developing mitotic inhibitors for the treatment of non-small cell carcinoma. Expert Opin Emerg Drugs 2017; 22:213-222. [PMID: 28836854 DOI: 10.1080/14728214.2017.1369952] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
INTRODUCTION Mitosis is necessary to sustain life and is followed immediately by cell division into two daughter cells. Microtubules play a key role in the formation of the mitotic spindle apparatus and cytokinesis at the end of mitosis. Various anti-microtubule agents such as taxanes and vinca alkaloids are widely used in the treatment of advanced non-small cell lung cancer (NSCLC) but their use is associated with hematologic toxicity profile, acquired resistance and hypersensitivity reactions. Areas covered: The Nab-paclitaxels are the more recent antimitotic agents approved in NSCLC showing a better tolerability and activity when compared to previous ones. Despite this, the outcome of patients with advanced non-small cell lung cancer is poor. Due to the key role of mitosis, research is focused on the identification of new mitotic drug targets other than microtubule inhibitors, such as cell cycle targets, aurora kinases and Polo-like kinases. Expert opinion: Despite improvements in chemotherapeutic choices and supportive care, the majority of patients experience a deteriorating quality of life and significant toxicities associated to a poor outcome. Thus, the therapeutic management of patients with advanced NSCLC represents an ongoing challenge and novel agents targeting mitosis are under investigation.
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Affiliation(s)
| | - Cesare Gridelli
- a Division of Medical Oncology , 'S.G. Moscati' Hospital , Avellino , Italy
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Haque F, Banayan S, Yee J, Chiang YW. Extraction and applications of cyanotoxins and other cyanobacterial secondary metabolites. CHEMOSPHERE 2017; 183:164-175. [PMID: 28544902 DOI: 10.1016/j.chemosphere.2017.05.106] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Revised: 05/17/2017] [Accepted: 05/18/2017] [Indexed: 06/07/2023]
Abstract
The rapid proliferation of cyanobacteria in bodies of water has caused cyanobacterial blooms, which have become an increasing cause of concern, largely due to the presence of toxic secondary metabolites (or cyanotoxins). Cyanotoxins are the toxins produced by cyanobacteria that may be harmful to surrounding wildlife. They include hepatotoxins, neurotoxins and dermatotoxins, and are classified based on the organs they affect. There are also non-toxic secondary metabolites that include chelators and UV-absorbing compounds. This paper summarizes the optimal techniques for secondary metabolite extraction and the possible useful products that can be obtained from cyanobacteria, with additional focus given to products derived from secondary metabolites. It becomes evident that the potential for their use as biocides, chelators, biofuels, biofertilizers, pharmaceuticals, food and feed, and cosmetics has not yet been comprehensively studied or extensively implemented.
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Affiliation(s)
- Fatima Haque
- School of Engineering, University of Guelph, 50 Stone Road East, Guelph, Ontario, N1G 2W1, Canada
| | - Sara Banayan
- School of Engineering, University of Guelph, 50 Stone Road East, Guelph, Ontario, N1G 2W1, Canada
| | - Josephine Yee
- School of Engineering, University of Guelph, 50 Stone Road East, Guelph, Ontario, N1G 2W1, Canada
| | - Yi Wai Chiang
- School of Engineering, University of Guelph, 50 Stone Road East, Guelph, Ontario, N1G 2W1, Canada.
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Weiss C, Figueras E, Borbely AN, Sewald N. Cryptophycins: cytotoxic cyclodepsipeptides with potential for tumor targeting. J Pept Sci 2017; 23:514-531. [PMID: 28661555 DOI: 10.1002/psc.3015] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Revised: 05/02/2017] [Accepted: 05/05/2017] [Indexed: 02/06/2023]
Abstract
Cryptophycins are a class of 16-membered highly cytotoxic macrocyclic depsipeptides isolated from cyanobacteria. The biological activity is based on their ability to interact with tubulin. They interfere with microtubule dynamics and prevent microtubules from forming correct mitotic spindles, which causes cell-cycle arrest and apoptosis. Their strong antiproliferative activities with 100-fold to 1000-fold potency compared with those of paclitaxel and vinblastine have been observed. Cryptophycins are highly promising drug candidates, as their biological activity is not negatively affected by P-glycoprotein, a drug efflux system commonly found in multidrug-resistant cancer cell lines and solid tumors. Cryptophycin-52 had been investigated in phase II clinical trials but failed because of its high neurotoxicity. Recently, cryptophycin conjugates with peptides and antibodies have been developed for targeted delivery in tumor therapy. Copyright © 2017 European Peptide Society and John Wiley & Sons, Ltd.
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Affiliation(s)
- Christine Weiss
- Organic and Bioorganic Chemistry, Department of Chemistry, Bielefeld University, PO Box 100131, 33501, Bielefeld, Germany
| | - Eduard Figueras
- Organic and Bioorganic Chemistry, Department of Chemistry, Bielefeld University, PO Box 100131, 33501, Bielefeld, Germany
| | - Adina N Borbely
- Organic and Bioorganic Chemistry, Department of Chemistry, Bielefeld University, PO Box 100131, 33501, Bielefeld, Germany
| | - Norbert Sewald
- Organic and Bioorganic Chemistry, Department of Chemistry, Bielefeld University, PO Box 100131, 33501, Bielefeld, Germany
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10
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Abstract
Cyclic depsipeptides are polypeptides in which one or more amino acid is replaced by a hydroxy acid, resulting in the formation of at least one ester bond in the core ring structure. Many natural cyclic depsipeptides possessing intriguing structural and biological properties, including antitumor, antifungal, antiviral, antibacterial, anthelmintic, and anti-inflammatory activities, have been identified from fungi, plants, and marine organisms. In particular, the potent effects of cyclic depsipeptides on tumor cells have led to a number of clinical trials evaluating their potential as chemotherapeutic agents. Although many of the trials have not achieved the desired results, romidepsin (FK228), a bicyclic depsipeptide that inhibits histone deacetylase, has been shown to have clinical efficacy in patients with refractory cutaneous T-cell lymphoma and has received Food and Drug Administration approval for use in treatment. In this review, we discuss antitumor cyclic depsipeptides that have undergone clinical trials and focus on their structural features, mechanisms, potential applications in chemotherapy, and pharmacokinetic and toxicity data. The results of this study indicate that cyclic depsipeptides could be a rich source of new cancer therapeutics.
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Stabilizing versus destabilizing the microtubules: a double-edge sword for an effective cancer treatment option? Anal Cell Pathol (Amst) 2015; 2015:690916. [PMID: 26484003 PMCID: PMC4592889 DOI: 10.1155/2015/690916] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 08/29/2015] [Accepted: 09/01/2015] [Indexed: 11/17/2022] Open
Abstract
Microtubules are dynamic and structural cellular components involved in several cell functions, including cell shape, motility, and intracellular trafficking. In proliferating cells, they are essential components in the division process through the formation of the mitotic spindle. As a result of these functions, tubulin and microtubules are targets for anticancer agents. Microtubule-targeting agents can be divided into two groups: microtubule-stabilizing, and microtubule-destabilizing agents. The former bind to the tubulin polymer and stabilize microtubules, while the latter bind to the tubulin dimers and destabilize microtubules. Alteration of tubulin-microtubule equilibrium determines the disruption of the mitotic spindle, halting the cell cycle at the metaphase-anaphase transition and, eventually, resulting in cell death. Clinical application of earlier microtubule inhibitors, however, unfortunately showed several limits, such as neurological and bone marrow toxicity and the emergence of drug-resistant tumor cells. Here we review several natural and synthetic microtubule-targeting agents, which showed antitumor activity and increased efficacy in comparison to traditional drugs in various preclinical and clinical studies. Cryptophycins, combretastatins, ombrabulin, soblidotin, D-24851, epothilones and discodermolide were used in clinical trials. Some of them showed antiangiogenic and antivascular activity and others showed the ability to overcome multidrug resistance, supporting their possible use in chemotherapy.
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Mojardín L, Botet J, Moreno S, Salas M. Chromosome segregation and organization are targets of 5'-Fluorouracil in eukaryotic cells. Cell Cycle 2015; 14:206-18. [PMID: 25483073 DOI: 10.4161/15384101.2014.974425] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
The antimetabolite 5'-Fluorouracil (5FU) is an analog of uracil commonly employed as a chemotherapeutic agent in the treatment of a range of cancers including colorectal tumors. To assess the cellular effects of 5FU, we performed a genome-wide screening of the haploid deletion library of the eukaryotic model Schizosaccharomyces pombe. Our analysis validated previously characterized drug targets including RNA metabolism, but it also revealed unexpected mechanisms of action associated with chromosome segregation and organization (post-translational histone modification, histone exchange, heterochromatin). Further analysis showed that 5FU affects the heterochromatin structure (decreased levels of histone H3 lysine 9 methylation) and silencing (down-regulation of heterochromatic dg/dh transcripts). To our knowledge, this is the first time that defects in heterochromatin have been correlated with increased cytotoxicity to an anticancer drug. Moreover, the segregation of chromosomes, a process that requires an intact heterochromatin at centromeres, was impaired after drug exposure. These defects could be related to the induction of genes involved in chromatid cohesion and kinetochore assembly. Interestingly, we also observed that thiabendazole, a microtubule-destabilizing agent, synergistically enhanced the cytotoxic effects of 5FU. These findings point to new targets and drug combinations that could potentiate the effectiveness of 5FU-based treatments.
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Key Words
- 5FU, 5′-Fluorouracil, 5FU
- 5′-Fluorouracil
- Anticancer drug
- CENP-A, centromere-associated protein A
- CLRC, Clr4 methyltransferase complex
- ChIP, chromatin immunoprecipitation
- FUTP, fluorouridine triphosphate
- FdUMP, fluorodeoxyuridine monophosphate
- FdUTP, fluorodeoxyuridine triphosphate
- G1 phase, gap 1 phase of cell cycle
- GO, Gene Ontology
- H3K9me, H3 lysine 9 methylation
- HAT, histone acetyltransferase
- HDAC, histone deacetylase
- HMT, histone methyltransferase
- HP1, heterochromatin protein 1
- HULC, histone H2B ubiquitin ligase complex
- MNAse, micrococcal nuclease
- RDRC, RNA-directed RNA polymerase complex
- RITS, RNA-induced transcriptional silencing
- RNAi, interference RNA
- S phase, synthesis phase of cell cycle
- Schizosaccharomyces pombe
- TBZ, thiabendazole
- centromere
- chromosome organization
- chromosome segregation
- cnt, central core
- dsRNA, double-stranded RNA
- heterochromatin
- histone modification
- imr, innermost repeats
- siRNA, small interfering RNA
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Affiliation(s)
- Laura Mojardín
- a Instituto de Biología Molecular "Eladio Viñuela" (CSIC), Centro de Biología Molecular "Severo Ochoa" (CSIC-Universidad Autónoma) ; Cantoblanco , Madrid , Spain
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13
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Scherlach K, Graupner K, Hertweck C. Molecular Bacteria-Fungi Interactions: Effects on Environment, Food, and Medicine. Annu Rev Microbiol 2013; 67:375-97. [DOI: 10.1146/annurev-micro-092412-155702] [Citation(s) in RCA: 105] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Kirstin Scherlach
- Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, 07745 Jena, Germany;
| | - Katharina Graupner
- Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, 07745 Jena, Germany;
| | - Christian Hertweck
- Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, 07745 Jena, Germany;
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14
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Lee JC, Hou MF, Huang HW, Chang FR, Yeh CC, Tang JY, Chang HW. Marine algal natural products with anti-oxidative, anti-inflammatory, and anti-cancer properties. Cancer Cell Int 2013; 13:55. [PMID: 23724847 PMCID: PMC3674937 DOI: 10.1186/1475-2867-13-55] [Citation(s) in RCA: 152] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2013] [Accepted: 05/27/2013] [Indexed: 02/07/2023] Open
Abstract
For their various bioactivities, biomaterials derived from marine algae are important ingredients in many products, such as cosmetics and drugs for treating cancer and other diseases. This mini-review comprehensively compares the bioactivities and biological functions of biomaterials from red, green, brown, and blue-green algae. The anti-oxidative effects and bioactivities of several different crude extracts of algae have been evaluated both in vitro and in vivo. Natural products derived from marine algae protect cells by modulating the effects of oxidative stress. Because oxidative stress plays important roles in inflammatory reactions and in carcinogenesis, marine algal natural products have potential for use in anti-cancer and anti-inflammatory drugs.
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Affiliation(s)
- Jin-Ching Lee
- Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan.
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15
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Borah AJ, Goswami P, Barua NC, Phukan P. Synthesis of unit-B of cryptophycin-24 via Sharpless asymmetric dihydroxylation. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.10.078] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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16
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Bolduc KL, Larsen SD, Sherman DH. Efficient, divergent synthesis of cryptophycin unit A analogues. Chem Commun (Camb) 2012; 48:10.1039/c2cc32417b. [PMID: 22617820 PMCID: PMC3494784 DOI: 10.1039/c2cc32417b] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A flexible and divergent synthesis of cryptophycin unit A analogues is described. This method relies on iridium-catalysed stereo- and enantioselective crotylation and chemoselective one-pot oxidative olefination to access common intermediate . Heck, cross metathesis, and Suzuki-Miyaura reactions are illustrated for the generation of methyl ester unit A analogues .
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Affiliation(s)
- Kyle L. Bolduc
- Life Sciences Institute and Departments of Medicinal Chemistry, Chemistry, and Microbiology & Immunology, University of Michigan, Ann Arbor, MI 48109, United States
| | - Scott D. Larsen
- Life Sciences Institute and Departments of Medicinal Chemistry, Chemistry, and Microbiology & Immunology, University of Michigan, Ann Arbor, MI 48109, United States
| | - David H. Sherman
- Life Sciences Institute and Departments of Medicinal Chemistry, Chemistry, and Microbiology & Immunology, University of Michigan, Ann Arbor, MI 48109, United States
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17
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Chlipala GE, Mo S, Orjala J. Chemodiversity in freshwater and terrestrial cyanobacteria - a source for drug discovery. Curr Drug Targets 2011; 12:1654-73. [PMID: 21561419 PMCID: PMC3244969 DOI: 10.2174/138945011798109455] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2010] [Accepted: 03/02/2011] [Indexed: 12/16/2022]
Abstract
Cyanobacteria are considered a promising source for new pharmaceutical lead compounds and a large number of chemically diverse and bioactive metabolites have been obtained from cyanobacteria over the last few decades. This review highlights the structural diversity of natural products from freshwater and terrestrial cyanobacteria. The review is divided into three areas: cytotoxic metabolites, protease inhibitors, and antimicrobial metabolites. The first section discusses the potent cytotoxins cryptophycin and tolytoxin. The second section covers protease inhibitors from freshwater and terrestrial cyanobacteria and is divided in five subsections according to structural class: aeruginosins, cyanopeptolins, microviridins, anabaenopeptins, and microginins. Structure activity relationships are discussed within each protease inhibitor class. The third section, antimicrobial metabolites from freshwater and terrestrial cyanobacteria, is divided by chemical class in three subsections: alkaloids, peptides and terpenoids. These examples emphasize the structural diversity and drug development potential of natural products from freshwater and terrestrial cyanobacteria.
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Affiliation(s)
- George E. Chlipala
- Department of Medicinal Chemistry and Pharmacognosy, University of Illinois at Chicago, 833 S. Wood St., Chicago, Illinois, 60612
| | - Shunyan Mo
- Department of Medicinal Chemistry and Pharmacognosy, University of Illinois at Chicago, 833 S. Wood St., Chicago, Illinois, 60612
| | - Jimmy Orjala
- Department of Medicinal Chemistry and Pharmacognosy, University of Illinois at Chicago, 833 S. Wood St., Chicago, Illinois, 60612
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18
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Zhang J, Zhou J, Ren X, Diao Y, Li H, Jiang H, Ding K, Pei D. A new diaryl urea compound, D181, induces cell cycle arrest in the G1 and M phases by targeting receptor tyrosine kinases and the microtubule skeleton. Invest New Drugs 2010; 30:490-507. [DOI: 10.1007/s10637-010-9577-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2010] [Accepted: 10/28/2010] [Indexed: 12/16/2022]
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19
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Cruz LJ, Luque-Ortega JR, Rivas L, Albericio F. Kahalalide F, an antitumor depsipeptide in clinical trials, and its analogues as effective antileishmanial agents. Mol Pharm 2009; 6:813-24. [PMID: 19317431 DOI: 10.1021/mp8001039] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Leishmaniasis is a human parasitic disease caused by infection by the protozoan Leishmania spp. Chemotherapy is currently the only treatment available, but its efficacy is increasingly challenged by the rising incidence of resistance and the frequent severe side effects associated with first-line drugs. Thus the development of leads with distinct mechanisms of action is urgently needed. A strategy often used for this purpose consists of assaying for leishmanicidal activity drugs formerly developed for other applications, such as amphotericin B (antifungal) or miltefosine (antitumor), among others, to profit from previous pharmacological and toxicological studies. Kahalalide F (KF) is a tumoricidal cyclic depsipeptide currently under phase II clinical trials for several types of cancer and psoriasis. Its mechanism of action has not been fully elucidated. Here we report the leishmanicidal activity of KF and its synthetic analogues at a micromolar range of concentrations. Its lethality is strongly linked to the alteration of the plasma membrane (PM) of the parasite based on (i) a rapid depolarization of the PM and uptake of the vital dye SYTOX Green upon its addition; (ii) evidence of severe morphological damage to the membrane of the parasite, as shown by transmission electron microscopy; and (iii) a rapid drop in the intracellular ATP levels, which correlates significantly with the leishmanicidal activity for active analogues, some of them with significant improvement of their therapeutic index with respect to the parental molecule. In addition to the basic knowledge obtained, this class of lethal mechanism is considerably less prone to the induction of resistance than classical drugs. All together, these observations foster further studies for the optimization of KF and its analogues as new anti-Leishmania leads with a new mode of action.
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Affiliation(s)
- Luis J Cruz
- Institute for Research in Biomedicine, Barcelona Science Park, University of Barcelona, 08028-Barcelona, Spain
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20
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Nandy JP, Prakesch M, Khadem S, Reddy PT, Sharma U, Arya P. Advances in Solution- and Solid-Phase Synthesis toward the Generation of Natural Product-like Libraries. Chem Rev 2009; 109:1999-2060. [DOI: 10.1021/cr800188v] [Citation(s) in RCA: 151] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Jyoti P. Nandy
- Ontario Institute for Cancer Research, MaRS Centre, South Tower, 101 College Street, Toronto, Ontario M5G 1L7, Canada, Steacie Institute for Molecular Sciences, National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6, Canada, and Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Michael Prakesch
- Ontario Institute for Cancer Research, MaRS Centre, South Tower, 101 College Street, Toronto, Ontario M5G 1L7, Canada, Steacie Institute for Molecular Sciences, National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6, Canada, and Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Shahriar Khadem
- Ontario Institute for Cancer Research, MaRS Centre, South Tower, 101 College Street, Toronto, Ontario M5G 1L7, Canada, Steacie Institute for Molecular Sciences, National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6, Canada, and Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - P. Thirupathi Reddy
- Ontario Institute for Cancer Research, MaRS Centre, South Tower, 101 College Street, Toronto, Ontario M5G 1L7, Canada, Steacie Institute for Molecular Sciences, National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6, Canada, and Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Utpal Sharma
- Ontario Institute for Cancer Research, MaRS Centre, South Tower, 101 College Street, Toronto, Ontario M5G 1L7, Canada, Steacie Institute for Molecular Sciences, National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6, Canada, and Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Prabhat Arya
- Ontario Institute for Cancer Research, MaRS Centre, South Tower, 101 College Street, Toronto, Ontario M5G 1L7, Canada, Steacie Institute for Molecular Sciences, National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6, Canada, and Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
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21
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Abstract
This review describes secondary metabolites that have been shown to be synthesized by symbiotic bacteria, or for which this possibility has been discussed. It includes 365 references.
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Affiliation(s)
- Jörn Piel
- Kekulé-Institute of Organic Chemistry and Biochemistry, University of Bonn, Gerhard-Domagk-Str. 1, 53121 Bonn, Germany.
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22
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Abstract
A recent publication reveals the biosynthetic building blocks, genetic code, and broad substrate tolerance of the enzymes of the cryptophycin biosynthetic pathway. This work lays the foundation for the production of poorly accessible yet very promising members of this family of anticancer compounds from lichen cyanobacterial symbionts. Chemoenzymatic production or precursor-directed biosynthesis might bring candidates from this family of natural products back to clinical trials.
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Affiliation(s)
- Jürgen Rohr
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, 725 Rose Street, Lexington, Kentucky 40536-0082, USA.
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23
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Wright AD, Papendorf O, König GM, Oberemm A. Effects of cyanobacterium Fischerella ambigua isolates and cell free culture media on zebrafish (Danio rerio) embryo development. CHEMOSPHERE 2006; 65:604-8. [PMID: 16554083 DOI: 10.1016/j.chemosphere.2006.02.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2005] [Revised: 01/27/2006] [Accepted: 02/04/2006] [Indexed: 05/07/2023]
Abstract
The toxic effects of several species of fresh water cyanobacteria, notably Microcystis species and associated toxins, the microcystins, Anabaena species (anatoxin), Nodularia sp. (nodularin), and Cylindrospermopsis raciborskii (cylindrospermopsin), are well known. Little, however, is known about the effects of secondary metabolites other than alkaloids. Early life stage tests with zebrafish (Danio rerio) were used to detect bioactive properties of compounds released by healthy cyanobacteria (Fischerella ambigua), particularly on the early developmental stages of fish. This approach, using F. ambigua is probably most valuable as it shows the toxicity of healthy growing cyanobacteria. The effects of cyanobacterial secondary metabolites on the embryonic stages of fish are of considerable interest as many aquatic creatures, particularly fish, are unable to avoid the potential toxins that may be released by undesirable algal blooms or as a result of allelopathic effects. In the current study, the zebrafish (D. rerio) was used as a model experimental system to investigate the effects of ambigols A and C, tjipanazole D and C, 2,4-dichlorobenzoic acid, cell free culture media, and media extracts of a terrestrial/fresh water strain of the cyanobacterium F. ambigua on embryo development. Fish embryo tests performed with the cell free culture medium showed that after 3h of exposure to undiluted culture medium all fish embryos died. At a tenfold dilution the process of epiboly (formation of the gastrula) was retarded in all embryos, lesions were observed, and their general development was significantly arrested, finally followed by death. The same tests performed with extracts (dichloromethane, n-butanol, and residual cell free culture medium) of the cell free culture medium, ambigol A, ambigol C, 2,4-dichlorobenzoic acid and tjipanazole D showed only ambigol A to have an influence on zebrafish development at concentrations>or=1 mg/l (2.06 microM). After 55 h all embryos showed pectoral oedema, irregularly shaped fin folds, bent tails, and unusual circular neoplasms in the dorsal tail fin fold. Due to the high concentration of ambigol A used in this assay these effects were considered to be of minor importance when compared to those of the culture medium.
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Affiliation(s)
- Anthony D Wright
- Australian Institute of Marine Science, PMB No. 3, Townsville MC, Qld 4810, Australia.
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24
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Discovering novel strategies for antimicrotubule cytotoxic therapy. EJC Suppl 2006. [DOI: 10.1016/j.ejcsup.2006.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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25
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Maddess ML, Lautens M. Preparation of Homoallylic Homopropargylic Alcohols from 2-Vinyloxiranes. Org Lett 2005; 7:3557-60. [PMID: 16048341 DOI: 10.1021/ol051326l] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Beta,gamma-unsaturated aldehydes generated in situ by treatment of 2-vinyloxiranes with a catalytic amount of Sc(OTf)(3) or BF.OEt(2) are effectively trapped by B-allenyl-9-BBN to afford homoallylic homopropargylic alcohols in high yield. An enantioselective version has been demonstrated, and a convenient synthesis of 9-allenyl-9-BBN is described. [reaction: see text]
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Affiliation(s)
- Matthew L Maddess
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
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26
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Li Q, Sham HL. Discovery and development of antimitotic agents that inhibit tubulin polymerisation for the treatment of cancer. Expert Opin Ther Pat 2005. [DOI: 10.1517/13543776.12.11.1663] [Citation(s) in RCA: 101] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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27
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28
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Zask A, Birnberg G, Cheung K, Kaplan J, Niu C, Norton E, Suayan R, Yamashita A, Cole D, Tang Z, Krishnamurthy G, Williamson R, Khafizova G, Musto S, Hernandez R, Annable T, Yang X, Discafani C, Beyer C, Greenberger LM, Loganzo F, Ayral-Kaloustian S. Synthesis and biological activity of analogues of the antimicrotubule agent N,beta,beta-trimethyl-L-phenylalanyl-N(1)-[(1S,2E)-3-carboxy-1-isopropylbut-2-enyl]- N(1),3-dimethyl-L-valinamide (HTI-286). J Med Chem 2004; 47:4774-86. [PMID: 15341492 DOI: 10.1021/jm040056u] [Citation(s) in RCA: 33] [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
Hemiasterlin, a tripeptide isolated from marine sponges, induces microtubule depolymerization and mitotic arrest in cells. HTI-286, an analogue from an initial study of the hemiasterlins, is presently in clinical trials. In addition to its potent antitumor effects, 2 has the advantage of circumventing the P-glycoprotein-mediated resistance that hampers the efficacy of other antimicrotubule agents such as paclitaxel and vincristine in animal models. This paper describes an in-depth study of the structure--activity relationships of analogues of 2, their effects on microtubule polymerization, and their in vitro and in vivo anticancer activity. Regions of the molecule necessary for potent activity are identified. Groups tolerant of modification, leading to novel analogues, are reported. Potent analogues identified through in vivo studies in tumor xenograft models include one superior analogue, HTI-042.
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Affiliation(s)
- Arie Zask
- Chemical and Screening Sciences, and Oncology Research,Wyeth Research, 401 North Middletown Road, Pearl River, New York 10965, USA.
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29
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Biondi N, Piccardi R, Margheri MC, Rodolfi L, Smith GD, Tredici MR. Evaluation of Nostoc strain ATCC 53789 as a potential source of natural pesticides. Appl Environ Microbiol 2004; 70:3313-20. [PMID: 15184126 PMCID: PMC427721 DOI: 10.1128/aem.70.6.3313-3320.2004] [Citation(s) in RCA: 73] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The cyanobacterium Nostoc strain ATCC 53789, a known cryptophycin producer, was tested for its potential as a source of natural pesticides. The antibacterial, antifungal, insecticidal, nematocidal, and cytotoxic activities of methanolic extracts of the cyanobacterium were evaluated. Among the target organisms, nine fungi (Armillaria sp., Fusarium oxysporum f. sp. melonis, Penicillium expansum, Phytophthora cambivora, P. cinnamomi, Rhizoctonia solani, Rosellinia, sp., Sclerotinia sclerotiorum, and Verticillium albo-atrum) were growth inhibited and one insect (Helicoverpa armigera) was killed by the extract, as well as the two model organisms for nematocidal (Caenorhabditis elegans) and cytotoxic (Artemia salina) activity. No antibacterial activity was detected. The antifungal activity against S. sclerotiorum was further studied with both extracts and biomass of the cyanobacterium in a system involving tomato as a host plant. Finally, the herbicidal activity of Nostoc strain ATCC 53789 was evaluated against a grass mixture. To fully exploit the potential of this cyanobacterium in agriculture as a source of pesticides, suitable application methods to overcome its toxicity toward plants and nontarget organisms must be developed.
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Affiliation(s)
- Natascia Biondi
- Dipartimento di Biotecnologie Agrarie, Università degli Studi di Firenze, Florence, Italy
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30
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Newman DJ, Cragg GM. Marine natural products and related compounds in clinical and advanced preclinical trials. JOURNAL OF NATURAL PRODUCTS 2004; 67:1216-1238. [PMID: 15332835 DOI: 10.1021/np040031y] [Citation(s) in RCA: 441] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The marine environment has proven to be a very rich source of extremely potent compounds that have demonstrated significant activities in antitumor, antiinflammatory, analgesia, immunomodulation, allergy, and anti-viral assays. Although the case can and has been made that the nucleosides such as Ara-A and Ara-C are derived from knowledge gained from investigations of bioactive marine nucleosides, no drug directly from marine sources (whether isolated or by total synthesis) has yet made it to the commercial sector in any disease. However, as shown in this review, there are now significant numbers of very interesting molecules that have come from marine sources, or have been synthesized as a result of knowledge gained from a prototypical compound, that are either in or approaching Phase II/III clinical trials in cancer, analgesia, allergy, and cognitive diseases. A substantial number of other potential agents are following in their wake in preclinical trials in these and in other diseases.
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Affiliation(s)
- David J Newman
- Natural Products Branch, Developmental Therapeutics Program, NCI-Frederick, P.O. Box B, Frederick, Maryland 21702, USA.
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31
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Lautens M, Maddess ML. Chemoselective Cross Metathesis of Bishomoallylic Alcohols: Rapid Access to Fragment A of the Cryptophycins. Org Lett 2004; 6:1883-6. [PMID: 15176774 DOI: 10.1021/ol049883f] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] The racemic or enantioselective allylation of in situ formed beta,gamma-unsaturated aldehydes provides efficient access to bishomoallylic alcohols from readily available 2-vinyloxiranes. These products, when subjected to modified Grubbs cross metathesis conditions, afforded terminally homologated products in moderate to good yields with high E selectivity and without degradation of the enantiomeric excess. The compounds obtained through this two-step sequence yield fragments of an important and pharmacologically active family of cryptophycins.
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Affiliation(s)
- Mark Lautens
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada.
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32
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Buck SB, Huff JK, Himes RH, Georg GI. Total Synthesis and Antitubulin Activity of C10 Analogues of Cryptophycin-24. J Med Chem 2003; 47:696-702. [PMID: 14736249 DOI: 10.1021/jm030278c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The unsubstituted, 3'-Cl, 4'-C1, and 3',4'-diCl C10 analogues of cryptophycin-24 were prepared via total synthesis and tested in vitro for cytotoxicity against MCF-7 and multi-drug-resistant MCF-7/ADR breast cancer cell lines and in a tubulin assembly assay. The ED(50) values ranged from 7.2 to 15.8 microM in the tubulin assay and from 0.05 to 3.4 nM in the cell assays. The presence of a 3'-C1 and/or 4'-C1 substituent on the C10 phenyl ring increased cytotoxicity in the MCF-7 cell line compared to the unsubstituted phenyl ring. The most potent compound in this series possessed a 3'-C1 substituent on the C10 phenyl ring. The 3'-C1 analogue had ED(50) values of 50 and 580 pM in the MCF-7 and MCF-7/ADR cell lines, respectively. Its activity was very similar to the parent compound cryptophycin-24. Substitution of the 4'-MeO group in cryptophycin-24 with a 4'-C1 moiety did not significantly affect cytotoxicity against MCF-7 and MCF-7/ADR cells compared to the parent compound. These results demonstrated that the 4'-MeO group in cryptophycin-24 is not essential and can be replaced with 3'-C1 or 4'-C1 substituents.
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Affiliation(s)
- Suzanne B Buck
- Department of Medicinal Chemistry and Department of Molecular Biosciences, University of Kansas, 1251 Wescoe Drive, Lawrence, Kansas 66045-7582, USA
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33
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Checchi PM, Nettles JH, Zhou J, Snyder JP, Joshi HC. Microtubule-interacting drugs for cancer treatment. Trends Pharmacol Sci 2003; 24:361-5. [PMID: 12871669 DOI: 10.1016/s0165-6147(03)00161-5] [Citation(s) in RCA: 132] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Paula M Checchi
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA 30322, USA.
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34
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Abstract
[reaction: see text] A brief stereospecific synthesis of cryptophycin 1 is described in which (R)-mandelic acid serves as the sole source of asymmetry for unit A. The key step is a hetero-Diels-Alder cycloaddition.
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Affiliation(s)
- Lian-Hai Li
- Department of Chemistry, 2545 The Mall, University of Hawaii, Honolulu 96822, USA
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35
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Kavallaris M, Verrills NM, Hill BT. Anticancer therapy with novel tubulin-interacting drugs. Drug Resist Updat 2001; 4:392-401. [PMID: 12030786 DOI: 10.1054/drup.2002.0230] [Citation(s) in RCA: 103] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Antimitotic agents that target tubulin, including the taxanes and vinca alkaloids, are important components of current anticancer therapy. Whilst these antimitotic drugs are highly effective in the treatment of a number of cancers, both acquired and intrinsic resistance to these agents is a major clinical problem. Furthermore, the systemic toxicity, and in some cases lack of oral availability, make these agents less than ideal. Recently much effort has been directed on the isolation and synthesis of new antimitotic drugs that target the tubulin/microtubule system and display efficacy against drug-refractory carcinomas. Newly described compounds include structurally diverse natural products, such as dolastatin, epothilones and discodermolide, derivatives and structural analogues of traditional antimitotics, and novel synthetic molecules. Additionally, new developments in drug targeting are improving efficacy and therapeutic indices of traditional agents. A number of promising 'new generation' antimitotics are now undergoing clinical testing. These new agents are reviewed here in terms of their mechanism(s) of action on microtubules, effectiveness against drug-resistant tumour cells and clinical potential.
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Affiliation(s)
- M Kavallaris
- Children's Cancer Institute for Medical Research, Randwick, NSW, Australia.
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