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Wu W, Ang ECX, Xu X, Wang Q, Wang H, Lee R, Tan CH, Ye X. Asymmetric N-oxidation catalyzed by bisguanidinium dinuclear oxodiperoxomolybdosulfate. Nat Commun 2024; 15:7317. [PMID: 39183335 PMCID: PMC11345438 DOI: 10.1038/s41467-024-51765-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Accepted: 08/19/2024] [Indexed: 08/27/2024] Open
Abstract
N-oxides play a pivotal role in natural products and emerging drug design, while also serving as valuable ligand scaffolds in organometallic chemistry. Among heteroatom oxidations, the conversion of amines to N-oxides is a critical and challenging facet. We present here a highly enantioselective N-oxidation methodology for both cyclic and acyclic amines. The method employs an ion-pair catalyst comprising a chiral bisguanidinium [BG]2+ cation and an achiral oxodiperoxomolybdosulfate anion [(µ-SO4)2Mo2O2(µ-O2)2(O2)2]2-. Notably, the bisguanidinium cation undergoes modification through silyl group incorporation and is elucidated by X-ray crystallography. Our findings underscore the crucial role of the side chain in the determination of the chiral pocket size, allowing for the oxidation of diverse tertiary amines with enantioselectivities. Comprehensive mechanistic investigations are conducted to explain the catalytic system's efficacy in achieving dynamic kinetic resolution (DKR) with high efficiency.
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Affiliation(s)
- Wentao Wu
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Esther Cai Xia Ang
- School of chemistry, Chemical Engineering and Biotechnology, 21 Nanyang Link, Singapore 637371, Nanyang Technological University, Singapore, Singapore
| | - Xinru Xu
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Qi Wang
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Hong Wang
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, P. R. China.
| | - Richmond Lee
- School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW, Australia.
- Molecular Horizons, Wollongong, NSW, Australia.
| | - Choon-Hong Tan
- School of chemistry, Chemical Engineering and Biotechnology, 21 Nanyang Link, Singapore 637371, Nanyang Technological University, Singapore, Singapore.
| | - Xinyi Ye
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, P. R. China.
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2
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Kausar MA, Parveen S, Anwar S, Sadaf, Massey S, El-Horany HES, Khan FH, Shahein M, Husain SA. Cytotoxic potential and metabolomic profiling of alkaloid rich fraction of Tylophora indica leaves. Biochim Biophys Acta Mol Cell Biol Lipids 2024; 1869:159505. [PMID: 38729236 DOI: 10.1016/j.bbalip.2024.159505] [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: 10/06/2023] [Revised: 03/28/2024] [Accepted: 05/07/2024] [Indexed: 05/12/2024]
Abstract
Tylophora indica (Burm f.) Merrill, belong to family Asclepiadaceae, is considered to be a natural remedy with high medicinal benefits. The objective of this work is to assess the metabolomic profile of T. indica leaves enriched in alkaloids, as well as to evaluate the in vitro cytotoxicity of these leaves using the MTT assay on human breast MCF-7 and liver HepG2 cancer cell lines. Dried leaves of T. indica were extracted by sonication, using methanol containing 2 % (v/v) of acetic acid and obtained fraction was characterized by HPTLC and UPLC-MS. The UPLC-MS study yielded a preliminary identification of 32 metabolites, with tylophorine, tylophorine B, tylophorinine, and tylophorinidine being the predominant metabolites. The cytotoxicity of the extract of T. indica was evaluated on HepG2 and MCF-7 cell lines, yielding inhibitory concentration (IC50) values of 75.71 μg/mL and 69.60 μg/mL, respectively. Data suggested that the phytochemical screening clearly showed presence of numerous secondary metabolites with moderate cytotoxic efficacy. In conclusion, the future prospects of T. indica appear promising for the advancement of phytopharmaceutical-based anticancer medications, as well as for the design of contemporary pharmaceuticals in the field of cancer chemotherapy.
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Affiliation(s)
- Mohd Adnan Kausar
- Department of Biochemistry, College of Medicine, University of Ha'il, Hail 81411, Saudi Arabia; Medical and Diagnostic Research Centre, University of Ha'il, Hail 55473, Saudi Arabia.
| | - Shabana Parveen
- Department of Biosciences, Jamia Millia Islamia, Okhla, New Delhi 110025, India.
| | - Sadaf Anwar
- Department of Biochemistry, College of Medicine, University of Ha'il, Hail 81411, Saudi Arabia; Medical and Diagnostic Research Centre, University of Ha'il, Hail 55473, Saudi Arabia.
| | - Sadaf
- Department of Biotechnology, Jamia Millia Islamia, Okhla, New Delhi 110025, India
| | - Sheersh Massey
- Department of Biosciences, Jamia Millia Islamia, Okhla, New Delhi 110025, India.
| | - Hemat El-Sayed El-Horany
- Department of Biochemistry, College of Medicine, University of Ha'il, Hail 81411, Saudi Arabia; Medical and Diagnostic Research Centre, University of Ha'il, Hail 55473, Saudi Arabia; Medical Biochemistry Department, Faculty of Medicine, Tanta University, Egypt.
| | - Farida Habib Khan
- Medical and Diagnostic Research Centre, University of Ha'il, Hail 55473, Saudi Arabia; Department of Community and Family Medicine, College of Medicine, University of Ha'il, Hail 81411, Saudi Arabia.
| | - Mona Shahein
- Department of Pediatrics, College of Medicine, University of Ha'il, Hail 81411, Saudi Arabia
| | - Syed Akhtar Husain
- Department of Biosciences, Jamia Millia Islamia, Okhla, New Delhi 110025, India.
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3
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Ramli I, Cheriet T, Thuan DTB, Khoi DN, Thu DNK, Posadino AM, Fenu G, Sharifi-Rad J, Pintus G. Potential applications of antofine and its synthetic derivatives in cancer therapy: structural and molecular insights. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024:10.1007/s00210-024-03180-x. [PMID: 38842561 DOI: 10.1007/s00210-024-03180-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Accepted: 05/21/2024] [Indexed: 06/07/2024]
Abstract
Cancer is a major global health challenge, being the second leading cause of morbidity and mortality after cardiovascular disease. The growing economic burden and profound psychosocial impact on patients and their families make it urgent to find innovative and effective anticancer solutions. For this reason, interest in using natural compounds to develop new cancer treatments has grown. In this respect, antofine, an alkaloid class found in Apocynaceae, Lauraceae, and Moraceae family plants, exhibits promising biological properties, including anti-inflammatory, anticancer, antiviral, and antifungal activities. Several molecular mechanisms have been identified underlying antofine anti-cancerous effects, including the inhibition of nuclear factor κB (NF-κB) and AKT/mTOR signaling pathways, epigenetic inhibition of protein synthesis, ribosomal targeting, induction of apoptosis, inhibition of DNA synthesis, and cell cycle arrest. This study discusses the molecular structure, sources, photochemistry, and anticancer properties of antofine in relation to its structure-activity relationship and molecular targets. Then, examine in vitro and in vivo studies and analyze the mechanisms of action underpinning antofine efficacy against cancer cells. This review also discusses multidrug resistance in human cancer and the potential of antofine in this context. Safety and toxicity concerns are also addressed as well as current challenges in antofine research, including the need for clinical trials and bioavailability optimization. This review aims to provide comprehensive information for more effective natural compound-based cancer treatments.
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Affiliation(s)
- Iman Ramli
- Laboratory of Applied Biochemistry, Faculté Des Sciences de La Nature Et de La Vie, Université Frères Mentouri Constantine 1, 25000, Constantine, Algeria
| | - Thamere Cheriet
- Unité de Valorisation Des Ressources Naturelles, Molécules Bioactives Et Analyses Physicochimiques Et Biologiques, Université Des Frères Mentouri Constantine, 25000, Constantine, Algeria
- Département Science de La Nature Et de La Vie, Faculté Des Sciences Exactes Et Science de La Natute Et de La Vie, Université Mohammed Boudiaf-Oum El-Bouaghi, 04000, Oum El-Bouaghi, Algeria
| | | | - Dang Ngoc Khoi
- College of Health Sciences, VinUniversity, Gia Lam, 100000, Hanoi, Vietnam
| | | | - Anna Maria Posadino
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43B, 07100, Sassari, Italy
| | - Grazia Fenu
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43B, 07100, Sassari, Italy
| | - Javad Sharifi-Rad
- Department of Biomedical Sciences, College of Medicine, Korea University, Seoul, Republic of Korea.
| | - Gianfranco Pintus
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43B, 07100, Sassari, Italy.
- Department of Medical Laboratory Sciences, College of Health Sciences and Sharjah Institute for Medical Research, University of Sharjah, 27272, Sharjah, United Arab Emirates.
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4
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Nishiyama T, Mizuno S, Hieda Y, Choshi T. Progress on the Synthesis of the Aromathecin Family of Compounds: An Overview. Molecules 2024; 29:2380. [PMID: 38792241 PMCID: PMC11124238 DOI: 10.3390/molecules29102380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2024] [Revised: 05/14/2024] [Accepted: 05/17/2024] [Indexed: 05/26/2024] Open
Abstract
We present a systematic review of the methods developed for the synthesis of the aromathecin family of compounds (benz[6,7]indolizino[1,2-b]quinolin-11(13H)-ones) and their derivatives. These methods can be broadly classified into four categories based on the construction of pentacyclic structures: Category 1: by constructing a pyridone moiety (D-ring) on the pyrroloquinoline ring (A/B/C-ring), Category 2: by constructing a pyridine moiety (B-ring) on the pyrroloisoquinolone ring (C/D/E-ring), Category 3: by constructing an indolizidinone moiety (C/D-ring) in a tandem reaction, and Category 4: by constructing a pyrrolidine moiety (C-ring) on the isoquinolone ring (D/E-ring).
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Affiliation(s)
| | | | | | - Tominari Choshi
- Faculty of Pharmacy and Pharmaceutical Sciences, Fukuyama University, 1 Sanzo, Gakuen-cho, Fukuyama 729-0292, Japan; (T.N.); (S.M.); (Y.H.)
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5
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Mostafa EM, Musa A, Mohammed HA, Alzarea AI, Abdelgawad MA, Al-Sanea MM, Ismail A, Zafar A, Elmowafy M, Selim S, Khan RA. Phenanthroindolizidine Alkaloids Secondary Metabolites Diversity in Medicinally Viable Plants of the Genus Tylophora. PLANTS (BASEL, SWITZERLAND) 2023; 12:1143. [PMID: 36904003 PMCID: PMC10005110 DOI: 10.3390/plants12051143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 02/25/2023] [Accepted: 02/28/2023] [Indexed: 06/18/2023]
Abstract
Plants of the genus Tylophora have commonly been used in traditional medicine in various communities, especially in the tropical and subtropical regions of climatic zones. Of the nearly 300 species reported in the Tylophora genus, eight are primarily used in various forms to treat a variety of bodily disorders based on the symptoms. Certain plants from the genus have found use as anti-inflammatory, anti-tumor, anti-allergic, anti-microbial, hypoglycemic, hypolipidemic, anti-oxidant, smooth muscle relaxant, immunomodulatory, and anti-plasmodium agents, as well as free-radical scavengers. Pharmacologically, a few plant species from the genus have exhibited broad-spectrum anti-microbial and anti-cancer activity, which has been proven through experimental evaluations. Some of the plants in the genus have also helped in alcohol-induced anxiety amelioration and myocardial damage repair. The plants belonging to the genus have also shown diuretic, anti-asthmatic, and hepato-protective activities. Tylophora plants have afforded diverse structural bases for secondary metabolites, mainly belonging to phenanthroindolizidine alkaloids, which have been found to treat several diseases with promising pharmacological activity levels. This review encompasses information on various Tylophora species, their distribution, corresponding plant synonyms, and chemical diversity of the secondary metabolic phytochemicals as reported in the literature, together with their prominent biological activities.
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Affiliation(s)
- Ehab M. Mostafa
- Department of Pharmacognosy, College of Pharmacy, Jouf University, Sakaka 72341, Saudi Arabia
| | - Arafa Musa
- Department of Pharmacognosy, College of Pharmacy, Jouf University, Sakaka 72341, Saudi Arabia
| | - Hamdoon A. Mohammed
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, Qassim University, Buraydah 51452, Saudi Arabia
- Pharmacognosy and Medicinal Plants Department, Faculty of Pharmacy (Boys), Al-Azhar University, Cairo 11884, Egypt
| | | | - Mohamed A. Abdelgawad
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jouf University, Sakaka 72341, Saudi Arabia
| | - Mohammad M. Al-Sanea
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jouf University, Sakaka 72341, Saudi Arabia
| | - Ahmed Ismail
- Pharmacognosy Department, Faculty of Pharmacy, Fayoum University, Faiyum 63514, Egypt
| | - Ameeduzzafar Zafar
- Department of Pharmaceutics, College of Pharmacy, Jouf University, Sakaka 72341, Saudi Arabia
| | - Mohammed Elmowafy
- Department of Pharmaceutics, College of Pharmacy, Jouf University, Sakaka 72341, Saudi Arabia
| | - Samy Selim
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Jouf University, Sakaka 72388, Saudi Arabia
| | - Riaz A. Khan
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, Qassim University, Buraydah 51452, Saudi Arabia
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S. M. S, Naveen NR, Rao GSNK, Gopan G, Chopra H, Park MN, Alshahrani MM, Jose J, Emran TB, Kim B. A spotlight on alkaloid nanoformulations for the treatment of lung cancer. Front Oncol 2022; 12:994155. [PMID: 36330493 PMCID: PMC9623325 DOI: 10.3389/fonc.2022.994155] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 09/12/2022] [Indexed: 07/30/2023] Open
Abstract
Numerous naturally available phytochemicals have potential anti-cancer activities due to their vast structural diversity. Alkaloids have been extensively used in cancer treatment, especially lung cancers, among the plant-based compounds. However, their utilization is limited by their poor solubility, low bioavailability, and inadequacies such as lack of specificity to cancer cells and indiscriminate distribution in the tissues. Incorporating the alkaloids into nanoformulations can overcome the said limitations paving the way for effective delivery of the alkaloids to the site of action in sufficient concentrations, which is crucial in tumor targeting. Our review attempts to assess whether alkaloid nanoformulation can be an effective tool in lung cancer therapy. The mechanism of action of each alkaloid having potential is explored in great detail in the review. In general, Alkaloids suppress oncogenesis by modulating several signaling pathways involved in multiplication, cell cycle, and metastasis, making them significant component of many clinical anti-cancerous agents. The review also explores the future prospects of alkaloid nanoformulation in lung cancer. So, in conclusion, alkaloid based nanoformulation will emerge as a potential gamechanger in treating lung cancer in the near future.
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Affiliation(s)
- Sindhoor S. M.
- Department of Pharmaceutics, P.A. College of Pharmacy, Mangalore, Karnataka, India
| | - N. Raghavendra Naveen
- Department of Pharmaceutics, Sri Adichunchanagiri College of Pharmacy, Adichunchanagiri University, B. G. Nagar, Karnataka, India
| | - GSN Koteswara Rao
- Department of Pharmacy, School of Medical and Allied Sciences, Galgotias University, Greater Noida, Uttar Pradesh, India
| | - Gopika Gopan
- Department of Pharmaceutics, NGSM Institute of Pharmaceutical Sciences, Nitte (Deemed to be University), Mangalore, Karnataka, India
| | - Hitesh Chopra
- Chitkara College of Pharmacy, Chitkara University, Rajpura, Punjab, India
| | - Moon Nyeo Park
- Department of Korean Medicine, Kyung Hee University, Seoul, South Korea
| | - Mohammed Merae Alshahrani
- Department of Clinical Laboratory Sciences, Faculty of Applied Medical Sciences, Najran University, Najran, Saudi Arabia
| | - Jobin Jose
- Department of Pharmaceutics, NGSM Institute of Pharmaceutical Sciences, Nitte (Deemed to be University), Mangalore, Karnataka, India
| | - Talha Bin Emran
- Department of Pharmacy, BGC Trust University Bangladesh, Chittagong, Bangladesh
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka, Bangladesh
| | - Bonglee Kim
- Department of Korean Medicine, Kyung Hee University, Seoul, South Korea
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7
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Reimche I, Yu H, Ariantari NP, Liu Z, Merkens K, Rotfuß S, Peter K, Jungwirth U, Bauer N, Kiefer F, Neudörfl JM, Schmalz HG, Proksch P, Teusch N. Phenanthroindolizidine Alkaloids Isolated from Tylophora ovata as Potent Inhibitors of Inflammation, Spheroid Growth, and Invasion of Triple-Negative Breast Cancer. Int J Mol Sci 2022; 23:ijms231810319. [PMID: 36142230 PMCID: PMC9499467 DOI: 10.3390/ijms231810319] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 09/01/2022] [Accepted: 09/02/2022] [Indexed: 11/16/2022] Open
Abstract
Triple-negative breast cancer (TNBC), representing the most aggressive form of breast cancer with currently no targeted therapy available, is characterized by an inflammatory and hypoxic tumor microenvironment. To date, a broad spectrum of anti-tumor activities has been reported for phenanthroindolizidine alkaloids (PAs), however, their mode of action in TNBC remains elusive. Thus, we investigated six naturally occurring PAs extracted from the plant Tylophora ovata: O-methyltylophorinidine (1) and its five derivatives tylophorinidine (2), tylophoridicine E (3), 2-demethoxytylophorine (4), tylophoridicine D (5), and anhydrodehydrotylophorinidine (6). In comparison to natural (1) and for more-in depth studies, we also utilized a sample of synthetic O-methyltylophorinidine (1s). Our results indicate a remarkably effective blockade of nuclear factor kappa B (NFκB) within 2 h for compounds (1) and (1s) (IC50 = 17.1 ± 2.0 nM and 3.3 ± 0.2 nM) that is different from its effect on cell viability within 24 h (IC50 = 13.6 ± 0.4 nM and 4.2 ± 1 nM). Furthermore, NFκB inhibition data for the additional five analogues indicate a structure–activity relationship (SAR). Mechanistically, NFκB is significantly blocked through the stabilization of its inhibitor protein kappa B alpha (IκBα) under normoxic as well as hypoxic conditions. To better mimic the TNBC microenvironment in vitro, we established a 3D co-culture by combining the human TNBC cell line MDA-MB-231 with primary murine cancer-associated fibroblasts (CAF) and type I collagen. Compound (1) demonstrates superiority against the therapeutic gold standard paclitaxel by diminishing spheroid growth by 40% at 100 nM. The anti-proliferative effect of (1s) is distinct from paclitaxel in that it arrests the cell cycle at the G0/G1 state, thereby mediating a time-dependent delay in cell cycle progression. Furthermore, (1s) inhibited invasion of TNBC monoculture spheroids into a matrigel®-based environment at 10 nM. In conclusion, PAs serve as promising agents with presumably multiple target sites to combat inflammatory and hypoxia-driven cancer, such as TNBC, with a different mode of action than the currently applied chemotherapeutic drugs.
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Affiliation(s)
- Irene Reimche
- Department of Biomedical Sciences, Institute of Health Research and Education, University of Osnabrück, 49090 Osnabrück, Germany
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Haiqian Yu
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Ni Putu Ariantari
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich Heine University, 40225 Düsseldorf, Germany
- Department of Pharmacy, Faculty of Mathematics and Natural Sciences, Udayana University, Bali 80361, Indonesia
| | - Zhen Liu
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Kay Merkens
- Department of Chemistry, University of Cologne, 50923 Cologne, Germany
| | - Stella Rotfuß
- Department of Biomedical Sciences, Institute of Health Research and Education, University of Osnabrück, 49090 Osnabrück, Germany
| | - Karin Peter
- Department of Biomedical Sciences, Institute of Health Research and Education, University of Osnabrück, 49090 Osnabrück, Germany
| | - Ute Jungwirth
- Department of Life Sciences, Centre for Therapeutic Innovation, University of Bath, Bath BA2 7AY, UK
| | - Nadine Bauer
- European Institute of Molecular Imaging, University of Münster, 48149 Münster, Germany
| | - Friedemann Kiefer
- European Institute of Molecular Imaging, University of Münster, 48149 Münster, Germany
- Max Planck Institute for Molecular Biomedicine, 48149 Münster, Germany
| | | | | | - Peter Proksch
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Nicole Teusch
- Department of Biomedical Sciences, Institute of Health Research and Education, University of Osnabrück, 49090 Osnabrück, Germany
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich Heine University, 40225 Düsseldorf, Germany
- Correspondence: ; Tel.: +49-211-81-14163
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8
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Renner J, Smith SR, Cowley JM, Louie J. Improved Total Synthesis of Indolizidine and Quinolizidine Alkaloids via Nickel-Catalyzed (4 + 2) Cycloaddition. J Org Chem 2022; 87:8871-8883. [PMID: 35759553 DOI: 10.1021/acs.joc.2c00365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A Ni-catalyzed (4 + 2) cycloaddition of bicyclic 3-azetidinones and alkynes was developed to access indolizidine and quinolizidine alkaloids. A key element was the development of a diazomethylation procedure that allows the efficient synthesis of bicyclic azetidinones from pyroglutamic and 6-oxopiperidine-2-carboxylic acid. A ligand screening led to improved regioselectivity and enantiopurity during the Ni-catalyzed (4 + 2) cycloaddition. This straightforward methodology was leveraged to synthesize (+)-ipalbidine, (+)-septicine, (+)-seco-antofine, and (+)-7-methoxy-julandine.
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Affiliation(s)
- Jonas Renner
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112-8450, United States
| | - Sleight R Smith
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112-8450, United States
| | - Jacob M Cowley
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112-8450, United States
| | - Janis Louie
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112-8450, United States
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9
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Disadee W, Ruchirawat S. Oxazaborolidine-catalyzed reductive parallel kinetic resolution of ketones from β-nitro-azabicycles for the synthesis of chiral hypoestestatins 1, 2. Org Biomol Chem 2021; 19:8794-8805. [PMID: 34586134 DOI: 10.1039/d1ob01608c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel approach for the synthesis of 13a-methyl tylophora alkaloids has been reported. The key features included two different synthetic pathways targeted at transforming the β-nitro-azabicycle to the phenanthrene core. The successful steps involved the oxidation of the nitro-piperidine moiety to the corresponding α,β-unsaturated ketone, and an oxidative biaryl coupling reaction for phenanthrene ring formation. Finally, the desired product was obtained via a formal reductive removal of the hydroxyl group. This methodology has been applied for the synthesis of 13a-methyl tylophora alkaloids in up to 65% yield over six steps from β-nitro-azabicycles. Both natural and unnatural enantioenriched hypoestestatins 1 and 2, and related compounds were synthesized using parallel kinetic resolution of the CBS-oxazaborolidine-catalyzed reduction of racemic ketones to provide two separable diastereomeric alcohols in combined yields up to 91% and with high enantioselectvity (up to 89% ee). In addition, the catalytic asymmetric reduction to seco-hypoestestatins 1 and 2 has been reported for the first time. Thus, the ability to develop the racemic mixtures to both enatioenriched forms offers benefit for various biological assays in the future.
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Affiliation(s)
- Wannaporn Disadee
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, Lak Si, Bangkok 10210, Thailand.
| | - Somsak Ruchirawat
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, Lak Si, Bangkok 10210, Thailand.
- Program in Chemical Biology, Chulabhorn Graduate Institute, Laksi, Bangkok 10210, Thailand
- The Center of Excellence on Environmental Health and Toxicology (EHT), Bangkok 10400, Thailand
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10
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Omran Z, Guise CP, Chen L, Rauch C, Abdalla AN, Abdullah O, Sindi IA, Fischer PM, Smaill JB, Patterson AV, Liu Y, Wang Q. Design, Synthesis and In-Vitro Biological Evaluation of Antofine and Tylophorine Prodrugs as Hypoxia-Targeted Anticancer Agents. Molecules 2021; 26:3327. [PMID: 34206005 PMCID: PMC8199124 DOI: 10.3390/molecules26113327] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 05/20/2021] [Accepted: 05/29/2021] [Indexed: 12/15/2022] Open
Abstract
Phenanthroindolizidines, such as antofine and tylophorine, are a family of natural alkaloids isolated from different species of Asclepiadaceas. They are characterized by interesting biological activities, such as pronounced cytotoxicity against different human cancerous cell lines, including multidrug-resistant examples. Nonetheless, these derivatives are associated with severe neurotoxicity and loss of in vivo activity due to the highly lipophilic nature of the alkaloids. Here, we describe the development of highly polar prodrugs of antofine and tylophorine as hypoxia-targeted prodrugs. The developed quaternary ammonium salts of phenanthroindolizidines showed high chemical and metabolic stability and are predicted to have no penetration through the blood-brain barrier. The designed prodrugs displayed decreased cytotoxicity when tested under normoxic conditions. However, their cytotoxic activity considerably increased when tested under hypoxic conditions.
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Affiliation(s)
- Ziad Omran
- Department of Pharmaceutical Sciences, Pharmacy Department, Batterjee Medical College, Jeddah 21442, Saudi Arabia
| | - Chris P. Guise
- Auckland Cancer Society Research Centre, School of Medical Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand; (C.P.G.); (J.B.S.); (A.V.P.)
| | - Linwei Chen
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China; (L.C.); (Y.L.); (Q.W.)
| | - Cyril Rauch
- School of Veterinary Medicine and Science, University of Nottingham, College Road, Sutton Bonington LE12 5RD, UK;
| | - Ashraf N. Abdalla
- College of Pharmacy, Umm Al-Qura University, Makkah 21955, Saudi Arabia; (A.N.A.); (O.A.)
| | - Omeima Abdullah
- College of Pharmacy, Umm Al-Qura University, Makkah 21955, Saudi Arabia; (A.N.A.); (O.A.)
| | - Ikhlas A. Sindi
- Department of Biology, Faculty of Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
| | - Peter M. Fischer
- School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK;
| | - Jeff B. Smaill
- Auckland Cancer Society Research Centre, School of Medical Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand; (C.P.G.); (J.B.S.); (A.V.P.)
| | - Adam V. Patterson
- Auckland Cancer Society Research Centre, School of Medical Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand; (C.P.G.); (J.B.S.); (A.V.P.)
| | - Yuxiu Liu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China; (L.C.); (Y.L.); (Q.W.)
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China; (L.C.); (Y.L.); (Q.W.)
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11
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Zhang J, Morris-Natschke SL, Ma D, Shang XF, Yang CJ, Liu YQ, Lee KH. Biologically active indolizidine alkaloids. Med Res Rev 2020; 41:928-960. [PMID: 33128409 DOI: 10.1002/med.21747] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 10/09/2020] [Accepted: 10/19/2020] [Indexed: 12/23/2022]
Abstract
Indolizidine alkaloids are chemical constituents isolated from various marine and terrestrial plants and animals, including but not limited to trees, fungi, ants, and frogs, with a myriad of important biological activities. In this review, we discuss the biological activity and pharmacological effects of indolizidine alkaloids and offer new avenues toward the discovery of new and better drugs based on these naturally occurring compounds.
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Affiliation(s)
- Junmin Zhang
- School of Pharmacy, Lanzhou University, Lanzhou, China
| | - Susan L Morris-Natschke
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Di Ma
- School of Pharmacy, Lanzhou University, Lanzhou, China
| | | | - Chen-Jie Yang
- School of Pharmacy, Lanzhou University, Lanzhou, China
| | - Ying-Qian Liu
- School of Pharmacy, Lanzhou University, Lanzhou, China
| | - Kuo-Hsiung Lee
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina, USA
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12
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Abdel-Sattar E, Abdallah HM, El-Mekkawy S, Ichino C, Kiyohara H, Yamada H. Antimalarial alkaloid from Hypoestes forskaolii. Exp Parasitol 2020; 211:107851. [PMID: 32035972 DOI: 10.1016/j.exppara.2020.107851] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 01/15/2020] [Accepted: 02/01/2020] [Indexed: 12/22/2022]
Abstract
Following on from previous studies, we brought further our quest for anti-malarial agents isolated from plants grown in the Saudi Arabian Peninsula. Methanolic extracts were prepared from eighteen Saudi plants and then tested in vitro to assess their anti-malarial effects on Plasmodium falciparum K1, (a chloroquine-resistant strain) as well as their cytotoxicity on MRC5 (human diploid embryonic lung cell line) cells. Moderate anti-malarial activity was observed in extracts prepared from Hypoestes forskaolii (Vahl) R. Br. (IC50 value of 5.5 μg/ml) and Rhus retinorrhaea (IC50: 7.71 μg/ml). The remaining sixteen plant extracts appeared to be inactive (IC50 > 12.5 μg/ml). A novel phenanthro-quinolizidine alkaloid, 15β-hydroxycryptopleurine-N-oxide, was isolated from H. forskaolii using bio-guided fractionation procedures. Chloroquine-resistant (K1) and chloroquine-sensitive (FCR3) strains of P. falciparum appeared very sensitive to the anti-malarial activity of 15β-hydroxycryptopleurine-N-oxide, giving IC50 of 6.11 and 5.13 nM respectively. It showed cytotoxicity against MRC5 "IC50 of 24.45 nM" with selectivity indices of 4.0 and 4.76 against K1 and FCR3 strains, respectively. It is our understanding that this is the first account on phenanthro-quinolizidine alkaloids anti-malarial activity on a chloroquine-resistant P. falciparum strain.
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Affiliation(s)
- Essam Abdel-Sattar
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt.
| | - Hossam Mohamed Abdallah
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt; Department of Natural Products, Faculty of Pharmacy, King AbdulAziz University, Jeddah, Saudi Arabia
| | - Sahar El-Mekkawy
- Department of Chemistry of Natural Compounds, National Research Centre, Dokki, Giza, 12622, Egypt
| | - Chikara Ichino
- Kitasato Institute for Life Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan
| | - Hiroaki Kiyohara
- Kitasato Institute for Life Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan; Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan
| | - Haruki Yamada
- Kitasato Institute for Life Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan; Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan
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13
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Renner J, Thakur A, Rutz PM, Cowley JM, Evangelista JL, Kumar P, Prater MB, Stolley RM, Louie J. Total Synthesis of Indolizidine Alkaloids via Nickel-Catalyzed (4 + 2) Cyclization. Org Lett 2020; 22:924-928. [DOI: 10.1021/acs.orglett.9b04479] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Jonas Renner
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112-8450, United States
| | - Ashish Thakur
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112-8450, United States
| | - Philipp M. Rutz
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112-8450, United States
| | - Jacob M. Cowley
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112-8450, United States
| | - Judah L. Evangelista
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112-8450, United States
| | - Puneet Kumar
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112-8450, United States
| | - Matthew B. Prater
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112-8450, United States
| | - Ryan M. Stolley
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112-8450, United States
| | - Janis Louie
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112-8450, United States
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14
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Omran Z, Abdalla AN, Ibrahim MM, Hossain MA, Alarja M, Chen L, Liu Y, Wang Q. Boronic Analogues of (R)-6-O-Desmethylantofine as Anticancer Agents. Chem Pharm Bull (Tokyo) 2019; 67:1324-1327. [PMID: 31564698 DOI: 10.1248/cpb.c19-00692] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Phenanthroindolizidines are naturally occurring alkaloids mainly isolated from different species of Asclepiadaceae. These alkaloids are characterized by an excellent anticancer activity against a very wide range of cancerous cell lines including those who are multi drug resistant. Nevertheless, phenanthroindolizidines are associated with sever neurotoxicity that prevented any candidate from this family to pass the clinical trials. A number of boron-based analogues of (R)-6-O-desmethylantofine have been synthesised. Their physochemical properties were evaluated, same as their in-vitro antiproliferative activity. The pinacol boronate ester derivative (3) showed interesting cytotoxicity against a panel of cancerous cell lines attested by a cancer cell growth-inhibitory potency (GI50) as low as 30 nM.
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Affiliation(s)
- Ziad Omran
- College of Pharmacy, Umm Al-Qura University
| | | | | | | | | | - Linwei Chen
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University
| | - Yuxiu Liu
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University
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15
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Li S, Zhao H, Yin Z, Deng S, Gao Y, Li Y, Dai T. Synthesis and Antitumor Activity Evaluation of New Phenanthrene-Based Tylophorine Derivatives. LETT ORG CHEM 2019. [DOI: 10.2174/1570178615666181025115513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A series of new phenanthrene-based tylophorine derivatives (PBTs) were synthesized in
good yield and their structures were characterized by 1H-NMR spectroscopy and ESI MS. In vitro antitumor
activity of these compounds against five human carcinoma cell lines, including HCT116 (colorectal),
BGC-823 (gastric), HepG-2 (hepatic), Hela (cervical) and H460 (lung) cells, was evaluated by
MTT assay. Among these PBTs, compound 6b showed the highest antitumor activities against
HCT116 and HepG-2 cell lines with IC50 values of 6.1 and 6.4 μM, respectively, which were comparable
to that of adriamycin hydrochloride. The structure-activity relationship of these compounds was
also discussed based on the results of their antitumor activity.
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Affiliation(s)
- Songtao Li
- Hebei Province Key Laboratory of Research and Development of Traditional Chinese Medicine, Institute of Traditional Chinese Medicine, Chengde Medical University, Chengde, Hebei 067000, China
| | - Hongling Zhao
- Hebei Province Key Laboratory of Research and Development of Traditional Chinese Medicine, Institute of Traditional Chinese Medicine, Chengde Medical University, Chengde, Hebei 067000, China
| | - Zhifeng Yin
- Hebei Province Key Laboratory of Research and Development of Traditional Chinese Medicine, Institute of Traditional Chinese Medicine, Chengde Medical University, Chengde, Hebei 067000, China
| | - Shuhua Deng
- Hebei Province Key Laboratory of Research and Development of Traditional Chinese Medicine, Institute of Traditional Chinese Medicine, Chengde Medical University, Chengde, Hebei 067000, China
| | - Yang Gao
- Hebei Province Key Laboratory of Research and Development of Traditional Chinese Medicine, Institute of Traditional Chinese Medicine, Chengde Medical University, Chengde, Hebei 067000, China
| | - Yunfeng Li
- Hebei Province Key Laboratory of Research and Development of Traditional Chinese Medicine, Institute of Traditional Chinese Medicine, Chengde Medical University, Chengde, Hebei 067000, China
| | - Tao Dai
- Hebei Province Key Laboratory of Research and Development of Traditional Chinese Medicine, Institute of Traditional Chinese Medicine, Chengde Medical University, Chengde, Hebei 067000, China
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16
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Han G, Chen L, Wang Q, Wu M, Liu Y, Wang Q. Design, Synthesis, and Antitobacco Mosaic Virus Activity of Water-Soluble Chiral Quaternary Ammonium Salts of Phenanthroindolizidines Alkaloids. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:780-788. [PMID: 29355318 DOI: 10.1021/acs.jafc.7b03418] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
To study the influence of the substituent at the N-10 position on antiviral activity, the chiral quaternary ammonium salt derivatives of R- and S-tylophorine were designed, synthesized, and evaluated for antiviral activity against tobacco mosaic virus (TMV). The bioassay results indicated that most of the designed structural analogues showed good in vivo anti-TMV activity, among which propargyl quaternary ammonium salt compound S-7b showed the best anti-TMV activities (80.5%, 77.6%, 76.6%, 82.1%) at 500 μg/mL both in vitro and in vivo in the laboratory. In the field trials of antiviral efficacy against TMV, S-7b as well exhibited better activities than control plant virus inhibitors. The stability of compound S-7b was obviously increased, and its solubility was more than 500-times higher than that of S-tylophorine. Therefore, chiral quaternary ammonium salt S-7b was expected to be developed as a promising candidate as an inhibitor of plant virus.
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Affiliation(s)
- Guifang Han
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University , Tianjin 300071, China
| | - Linwei Chen
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University , Tianjin 300071, China
| | - Qiang Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University , Tianjin 300071, China
| | - Meng Wu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University , Tianjin 300071, China
| | - Yuxiu Liu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University , Tianjin 300071, China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University , Tianjin 300071, China
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17
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Wang Y, Lee S, Ha Y, Lam W, Chen SR, Dutschman GE, Gullen EA, Grill SP, Cheng Y, Fürstner A, Francis S, Baker DC, Yang X, Lee KH, Cheng YC. Tylophorine Analogs Allosterically Regulates Heat Shock Cognate Protein 70 And Inhibits Hepatitis C Virus Replication. Sci Rep 2017; 7:10037. [PMID: 28855547 PMCID: PMC5577180 DOI: 10.1038/s41598-017-08815-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Accepted: 07/19/2017] [Indexed: 12/12/2022] Open
Abstract
Tylophorine analogs have been shown to exhibit diverse activities against cancer, inflammation, arthritis, and lupus in vivo. In this study, we demonstrated that two tylophorine analogs, DCB-3503 and rac-cryptopleurine, exhibit potent inhibitory activity against hepatitis C virus (HCV) replication in genotype 1b Con 1 isolate. The inhibition of HCV replication is at least partially mediated through cellular heat shock cognate protein 70 (Hsc70). Hsc70 associates with the HCV replication complex by primarily binding to the poly U/UC motifs in HCV RNA. The interaction of DCB-3503 and rac-cryptopleurine with Hsc70 promotes the ATP hydrolysis activity of Hsc70 in the presence of the 3' poly U/UC motif of HCV RNA. Regulating the ATPase activity of Hsc70 may be one of the mechanisms by which tylophorine analogs inhibit HCV replication. This study demonstrates the novel anti-HCV activity of tylophorine analogs. Our results also highlight the importance of Hsc70 in HCV replication.
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Affiliation(s)
- Ying Wang
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT, 06520, USA. .,Institute of Chinese Medical Sciences and State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Macau, SAR, China.
| | - Sangwon Lee
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT, 06520, USA
| | - Ya Ha
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT, 06520, USA
| | - Wing Lam
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT, 06520, USA
| | - Shao-Ru Chen
- Institute of Chinese Medical Sciences and State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Macau, SAR, China
| | - Ginger E Dutschman
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT, 06520, USA
| | - Elizabeth A Gullen
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT, 06520, USA
| | - Susan P Grill
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT, 06520, USA
| | - Yao Cheng
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT, 06520, USA
| | - Alois Fürstner
- Max-Planck-Institut für Kohlenforschung, 45470, Mülheim/Ruhr, Germany
| | - Samson Francis
- Department of Chemistry, The University of Tennessee, Knoxville, TN, 37996, USA
| | - David C Baker
- Department of Chemistry, The University of Tennessee, Knoxville, TN, 37996, USA
| | - Xiaoming Yang
- Natural Products Research Laboratories, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Kuo-Hsiung Lee
- Natural Products Research Laboratories, 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
| | - Yung-Chi Cheng
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT, 06520, USA.
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18
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Liu J, He Y, Zhang D, Cai Y, Zhang C, Zhang P, Zhu H, Xu N, Liang S. In vitro anticancer effects of two novel phenanthroindolizidine alkaloid compounds on human colon and liver cancer cells. Mol Med Rep 2017; 16:2595-2603. [PMID: 28677760 PMCID: PMC5548052 DOI: 10.3892/mmr.2017.6879] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 04/07/2017] [Indexed: 02/05/2023] Open
Abstract
Malignant cancer is one of the most serious diseases threatening the health of human beings. Natural plant alkaloids exhibit multiple biological functions, including inhibition of cell proliferation, and may have potential anticancer activity. However, most natural alkaloids may not be suitable for human therapies owing to instability, poor dissolubility and potential side effects. To improve their anticancer activity and drug effect, the present study aimed to develop new alkaloid derivatives, the phenanthroindolizidine alkaloid compounds, and evaluated their potential antitumor effects on human cancer cells in vitro. Among the several newly synthesized analogues of phenanthroindolizidine alkaloids (PAs), the compounds YS306 and YS206 exhibited an increased growth inhibition activity on HepG2 liver cancer cells and on HCT116 and HT29 colon cancer cells, with half‑maximal inhibitory concentrations in the micromolar range. YS206 and YS306 (5 µg/ml) both significantly induced cell cycle arrest at the G2/M phase and notably decreased cell distribution at the G0/G1 and S phase. In addition, these two molecules significantly inhibited cancer cell migration, as analyzed by the wound‑healing and Transwell assays. However, neither YS306 nor YS206 exhibited observable effects on apoptosis. Therefore, chemical structure modifications of natural PAs based on anticancer activity assessments may be feasible in the development of new cancer chemotherapeutic agents.
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Affiliation(s)
- Jingjing Liu
- Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, P.R. China
| | - Yu He
- Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, P.R. China
| | - Dan Zhang
- Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, P.R. China
| | - Ying Cai
- Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, P.R. China
| | - Chenggang Zhang
- Department of Chemistry and Materials, Sichuan Normal University, Chengdu, Sichuan 610066, P.R. China
| | - Peng Zhang
- Department of Urinary Surgery, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Hongxia Zhu
- Laboratory of Cell and Molecular Biology and State Key Laboratory of Molecular Oncology, Cancer Institute and Cancer Hospital, Chinese Academy of Medical Sciences, Beijing 100034, P.R. China
| | - Ningzhi Xu
- Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, P.R. China
| | - Shufang Liang
- Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, P.R. China
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19
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Liu Y, Qing L, Meng C, Shi J, Yang Y, Wang Z, Han G, Wang Y, Ding J, Meng LH, Wang Q. 6-OH-Phenanthroquinolizidine Alkaloid and Its Derivatives Exert Potent Anticancer Activity by Delaying S Phase Progression. J Med Chem 2017; 60:2764-2779. [PMID: 28333459 DOI: 10.1021/acs.jmedchem.6b01502] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
To discover new phenanthroindolizidine and phenanthroquinolizidine alkaloids as potential anticancer drug candidates, non-natural 6-O-desmethylcryptopleurine (2) and its derivatives were prepared. Most of the new compounds exhibited potent antiproliferative activity against A549 and BEL-7402 cells, with the lowest IC50 being 3 nM. Optically pure 2-R was further evaluated against a panel of 30 cancer cell lines and found to inhibit the proliferation of all tested cell lines, including three multidrug-resistant cell lines, with an average IC50 value of 2.1 nM, which is much lower than that of previously reported phenanthroindolizidine DCB-3503 (1, IC50: 166.7 nM). A mechanistic evaluation showed that 2-R potently inhibited cell growth and colony formation, which are associated with a delay in S phase progression through the inhibition of DNA synthesis. These results along with further study on the safety profile of these compounds will facilitate the discovery of new phenanthroindolizidine and phenanthroquinolizidine alkaloids for use as anticancer drug candidates.
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Affiliation(s)
- Yuxiu Liu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Nankai University , Tianjin 300071, P. R. China
| | - Lihua Qing
- Division of Anti-Tumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, P. R. China
| | - Chuisong Meng
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Nankai University , Tianjin 300071, P. R. China
| | - Jiajie Shi
- Division of Anti-Tumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, P. R. China
| | - Yan Yang
- Division of Anti-Tumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, P. R. China
| | - Ziwen Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Nankai University , Tianjin 300071, P. R. China
| | - Guifang Han
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Nankai University , Tianjin 300071, P. R. China
| | - Yi Wang
- Division of Anti-Tumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, P. R. China
| | - Jian Ding
- Division of Anti-Tumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, P. R. China
| | - Ling-Hua Meng
- Division of Anti-Tumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, P. R. China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Nankai University , Tianjin 300071, P. R. China
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20
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Dey A, Mukherjee A, Chaudhury M. Alkaloids From Apocynaceae. STUDIES IN NATURAL PRODUCTS CHEMISTRY 2017. [DOI: 10.1016/b978-0-444-63931-8.00010-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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21
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Stereoselective reactions of nitro compounds in the synthesis of natural compound analogs and active pharmaceutical ingredients. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.07.067] [Citation(s) in RCA: 95] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Tylophorine Analog DCB-3503 Inhibited Cyclin D1 Translation through Allosteric Regulation of Heat Shock Cognate Protein 70. Sci Rep 2016; 6:32832. [PMID: 27596272 PMCID: PMC5011780 DOI: 10.1038/srep32832] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 08/15/2016] [Indexed: 02/06/2023] Open
Abstract
Tylophorine analog DCB-3503 is a potential anticancer and immunosuppressive agent that suppresses the translation of cellular regulatory proteins, including cyclin D1, at the elongation step. However, the molecular mechanism underlying this phenomenon remains unknown. This study demonstrates that DCB-3503 preferentially binds to heat shock cognate protein 70 (HSC70), which is a determinant for cyclin D1 translation by binding to the 3′-untranslated region (3′ UTR) of its mRNA. DCB-3503 allosterically regulates the ATPase and chaperone activities of HSC70 by promoting ATP hydrolysis in the presence of specific RNA binding motifs (AUUUA) of cyclin D1 mRNA. The suppression of cyclin D1 translation by DCB-3503 is not solely caused by perturbation of the homeostasis of microRNAs, although the microRNA processing complex is dissociated with DCB-3503 treatment. This study highlights a novel regulatory mechanism of protein translation with AUUUA motifs in the 3′ UTR of mRNA by HSC70, and its activity can be allosterically modulated by DCB-3503. DCB-3503 may be used to treat malignancies, such as hepatocellular carcinoma or breast cancer with elevated expression of cyclin D1.
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23
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Chattopadhyay AK, Hanessian S. Cyclic enaminones. Part II: applications as versatile intermediates in alkaloid synthesis. Chem Commun (Camb) 2016; 51:16450-67. [PMID: 26490499 DOI: 10.1039/c5cc05892a] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Among many other strategies, the enaminone approach is an important strategy to construct and diversify the azacyclic core in various alkaloids syntheses. In this brief review we discuss the application of cyclic enaminones as building blocks, as well as potential intermediates in the total synthesis of selected alkaloids.
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Affiliation(s)
- Amit Kumar Chattopadhyay
- Department of Chemistry, Université de Montréal, Station Centre Ville, C. P. 6128, Montréal, Qc H3C 3J7, Canada.
| | - Stephen Hanessian
- Department of Chemistry, Université de Montréal, Station Centre Ville, C. P. 6128, Montréal, Qc H3C 3J7, Canada.
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Chang CF, Li CF, Tsai CC, Chuang TH. Cyano Group Removal from Cyano-Promoted Aza-Diels-Alder Adducts: Synthesis and Structure-Activity Relationship of Phenanthroindolizidines and Phenanthroquinolizidines. Org Lett 2016; 18:638-41. [PMID: 26836702 DOI: 10.1021/acs.orglett.5b03395] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Phenanthroindolizidines and phenanthroquinolizidines were concisely synthesized by the reductive decyanization of cyano-promoted intramolecular aza-Diels-Alder cycloadducts followed by aryl-aryl coupling. Cyano groups were removed from α-aminoacrylonitriles via treatment with sodium borohydride in 2-propanol in almost quantitative yields; a possible mechanism was proposed and examined using D-labeling experiments. A systematic study of the effects of the phenanthrene substitution pattern on the anticancer activity against three human cancer cell lines was discussed.
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Affiliation(s)
- Chi-Fen Chang
- Department of Anatomy, School of Medicine, China Medical University , Taichung 40402, Taiwan
| | - Chien-Fu Li
- School of Pharmacy, China Medical University , Taichung 40402, Taiwan
| | - Chia-Chen Tsai
- School of Pharmacy, China Medical University , Taichung 40402, Taiwan
| | - Ta-Hsien Chuang
- School of Pharmacy, China Medical University , Taichung 40402, Taiwan.,Research Center for Chinese Herbal Medicine, China Medical University , Taichung 40402, Taiwan
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25
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Kucherenko AS, Lisnyak VG, Kostenko AA, Kochetkov SV, Zlotin SG. C
2-Symmetric pyrrolidine-derived squaramides as recyclable organocatalysts for asymmetric Michael reactions. Org Biomol Chem 2016; 14:9751-9759. [DOI: 10.1039/c6ob01606e] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Novel sustainable organocatalysts applicable to asymmetric synthesis of active pharmaceutical ingredients are developed.
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Affiliation(s)
- A. S. Kucherenko
- N. D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russia
| | - V. G. Lisnyak
- N. D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russia
| | - A. A. Kostenko
- N. D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russia
- D. I. Mendeleev University of Chemical Technology
| | - S. V. Kochetkov
- N. D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russia
| | - S. G. Zlotin
- N. D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russia
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26
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Chen CY, Zhu GY, Wang JR, Jiang ZH. Phenanthroindolizidine alkaloids from Tylophora atrofolliculata with hypoxia-inducible factor-1 (HIF-1) inhibitory activity. RSC Adv 2016. [DOI: 10.1039/c6ra16455b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Phenanthroindolizidine alkaloids from T. atrofolliculata with potent HIF-1 inhibitory effects.
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Affiliation(s)
- Cheng-Yu Chen
- State Key Laboratory of Quality Research in Chinese Medicine
- Macau Institute for Applied Research in Medicine and Health
- Macau University of Science and Technology
- Taipa
- China
| | - Guo-Yuan Zhu
- State Key Laboratory of Quality Research in Chinese Medicine
- Macau Institute for Applied Research in Medicine and Health
- Macau University of Science and Technology
- Taipa
- China
| | - Jing-Rong Wang
- State Key Laboratory of Quality Research in Chinese Medicine
- Macau Institute for Applied Research in Medicine and Health
- Macau University of Science and Technology
- Taipa
- China
| | - Zhi-Hong Jiang
- State Key Laboratory of Quality Research in Chinese Medicine
- Macau Institute for Applied Research in Medicine and Health
- Macau University of Science and Technology
- Taipa
- China
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27
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Li C, Li Y, Lv H, Li S, Tang K, Zhou W, Yu S, Chen X. The novel anti-neuroblastoma agent PF403, inhibits proliferation and invasion in vitro and in brain xenografts. Int J Oncol 2015; 47:179-87. [PMID: 25936609 DOI: 10.3892/ijo.2015.2977] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Accepted: 12/20/2014] [Indexed: 11/06/2022] Open
Abstract
Neuroblastoma is the most common cancer in infants and the fourth most common cancer in children. Our previous study showed that PF403 had a potent antitumor ability. In the present study, we evaluated the anti-neuroblastoma property of PF403 and investigated the underlying mechanisms. MTT assay, colony formation assay and flow cytometry assay were used to assess cytotoxicity of PF403 on SH-SY5Y cells. Transwell assay was chosen to estimate the anti-invasion ability of PF403 on neuroblastoma cells. The protein expression was detected by western blot analysis. The SH-SY5Y brain xenograft model was used to assess in vivo antitumor activity of PF403. PF403-mediated SH-SY5Y cell death was found to be dose- and time-dependent, and PF403 was able to limit invasion and metastasis of neuroblastoma cells. MRI and pathology analysis proved that the pro-drug of PF403, CAT3, inhibited SH-SY5Y cells in vivo. PF403 decreased expression of phosphorylated FAK, MMP-2 and MMP-9 proteins, and downregulated the activity of PI3K/AKT and Raf/ERK pathways, followed by regulation of the proteins expression of Bcl-2 family, activated caspase-3, -9 and PARP and initiation of apoptosis of neuroblastoma cells. PF403 exerted cytotoxicity against SH-SY5Y neuroblastoma cell both in vitro and in vivo, and inhibited its invasion ability, suggesting PF403 has potential as a new anticancer drug for the treatment of neuroblastoma.
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Affiliation(s)
- Chao Li
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, P.R. China
| | - Yan Li
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, P.R. China
| | - Haining Lv
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, P.R. China
| | - Shaowu Li
- Department of Neurosurgery, Capital Medical University Affiliated Beijing Tiantan Hospital; Beijing Neurosurgical Institute, Beijing 100050, P.R. China
| | - Ke Tang
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, P.R. China
| | - Wanqi Zhou
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, P.R. China
| | - Shishan Yu
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, P.R. China
| | - Xiaoguang Chen
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, P.R. China
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Wehming K, Schubert M, Schnakenburg G, Waldvogel SR. Oxidative Cyclization Reaction of 2-Aryl-Substituted Cinnamates To Form Phenanthrene Carboxylates by Using MoCl5. Chemistry 2014; 20:12463-9. [DOI: 10.1002/chem.201403442] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Indexed: 12/12/2022]
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Cytotoxicity, antioxidant and glutathione S-transferase inhibitory activity of palladium(II) chloride complexes bearing nucleobase ligands. TRANSIT METAL CHEM 2014. [DOI: 10.1007/s11243-014-9848-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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30
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Spectroscopic Characterization, In Vitro Cytotoxicity, and Antioxidant Activity of Mixed Ligand Palladium(II) Chloride Complexes Bearing Nucleobases. ACTA ACUST UNITED AC 2014. [DOI: 10.1155/2014/586131] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Mixed-ligand palladium(II) chloride complexes bearing the nucleobases, adenine (Ad), cytosine (Cyt), and guanine (Gua), have been synthesized and characterized by UV-vis spectrophotometric methods, magnetic susceptibility, molar conductivity, elemental analysis, FTIR, and 1H-NMR. The complexes were found to have the composition cis-[PdCl2(Gua)(Cyt)], cis-[PdCl2(Ad)(Cyt)], and cis-[PdCl2(Ad)(Gua)]. A four-coordinated square-planar geometry is proposed for these Pd(II) complexes based on magnetic evidence and electronic spectra. The complexes as well as the free nucleobase ligands were tested for their in vitro cytotoxicity on human promyelocytic leukemia (HL60) and human histiocytic leukemia (U937) cell lines. cis-[PdCl2(Ad)(Gua)] showed IC50 values of 11.29 ± 2.91 and 8.31 ± 1.44 μM against HL60 and U937, respectively, which was higher than that of the positive control (curcumin) against U937. The complexes also showed significant antioxidant activity when tested against 2,2-diphenyl-1-picrylhydrazylradical (DPPH).
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31
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Chen F, Su B, Wang Q. Asymmetric synthesis of (S)-tylophorine and (S)-cryptopleurine via one-pot Curtius rearrangement and Friedel–Crafts reaction tandem sequence. Org Chem Front 2014. [DOI: 10.1039/c4qo00084f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A practical total synthesis of phenanthroindo/quinolizidine alkaloids was developed, featuring an enantioselective alkylation and a one-pot Curtius rearrangement/intramolecular cyclization cascade.
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Affiliation(s)
- Fazhong Chen
- State Key Laboratory of Elemento-Organic Chemistry
- Research Institute of Elemento-Organic Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
- Tianjin 300071, People's Republic of China
| | - Bo Su
- State Key Laboratory of Elemento-Organic Chemistry
- Research Institute of Elemento-Organic Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
- Tianjin 300071, People's Republic of China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry
- Research Institute of Elemento-Organic Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
- Tianjin 300071, People's Republic of China
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32
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33
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Han G, Liu Y, Wang Q. Total Synthesis of Phenanthroindolizidine Alkaloids through an Amidyl Radical Cascade/Rearrangement Reaction. Org Lett 2013; 15:5334-7. [DOI: 10.1021/ol4025925] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Guifang Han
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - Yuxiu Liu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
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34
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Saraswati S, Kanaujia PK, Kumar S, Kumar R, Alhaider AA. Tylophorine, a phenanthraindolizidine alkaloid isolated from Tylophora indica exerts antiangiogenic and antitumor activity by targeting vascular endothelial growth factor receptor 2-mediated angiogenesis. Mol Cancer 2013; 12:82. [PMID: 23895055 PMCID: PMC3733984 DOI: 10.1186/1476-4598-12-82] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Accepted: 07/19/2013] [Indexed: 12/13/2022] Open
Abstract
Background Anti-angiogenesis targeting VEGFR2 has been considered as an important strategy for cancer therapy. Tylophorine is known to possess anti-inflammatory and antitumor activity, but its roles in tumor angiogenesis, the key step involved in tumor growth and metastasis, and the involved molecular mechanism is still unknown. Therefore, we examined its anti-angiogenic effects and mechanisms in vitro and in vivo. Methods We used tylophorine and analyzed its inhibitory effects on human umbilical vein endothelial cells (HUVEC) in vitro and Ehrlich ascites carcinoma (EAC) tumor in vivo. Results Tylophorine significantly inhibited a series of VEGF-induced angiogenesis processes including proliferation, migration, and tube formation of endothelial cells. Besides, it directly inhibited VEGFR2 tyrosine kinase activity and its downstream signaling pathways including Akt, Erk and ROS in endothelial cells. Using HUVECs we demonstrated that tylophorine inhibited VEGF-stimulated inflammatory responses including IL-6, IL-8, TNF-α, IFN-γ, MMP-2 and NO secretion. Tylophorine significantly inhibited neovascularization in sponge implant angiogenesis assay and also inhibited tumor angiogenesis and tumor growth in vivo. Molecular docking simulation indicated that tylophorine could form hydrogen bonds and aromatic interactions within the ATP-binding region of the VEGFR2 kinase unit. Conclusion Tylophorine exerts anti-angiogenesis effects via VEGFR2 signaling pathway thus, may be a viable drug candidate in anti-angiogenesis and anti-cancer therapies.
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Affiliation(s)
- Sarita Saraswati
- Camel Biomedical Research Unit, College of Pharmacy and Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia.
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35
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Stoye A, Peez TE, Opatz T. Left, right, or both? On the configuration of the phenanthroindolizidine alkaloid tylophorine from Tylophora indica. JOURNAL OF NATURAL PRODUCTS 2013; 76:275-278. [PMID: 23369033 DOI: 10.1021/np300838w] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The alkaloid (-)-tylophorine was isolated from a sample of Tylophora indica, and the crude extract was analyzed by HPLC/MS(n) and chiral HPLC/MS. While the literature states that the naturally occurring form of this alkaloid is the R-enantiomer and that its S-antipode is usually not found in nature, we confirmed the hypothesis of Govindachari and Nagarajan that natural levorotatory tylophorine is indeed a nearly racemic mixture with a slight excess of the R-enantiomer.
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Affiliation(s)
- Alexander Stoye
- Institute of Organic Chemistry, Johannes Gutenberg-University, Duesbergweg 10-14, Mainz, Germany
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36
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Su B, Deng M, Wang Q. The First Enantioselective Approach to 13a-Methyl-14-hydroxyphenanthroindolizidine Alkaloids - Synthetic Studies towards Hypoestestatin 2. European J Org Chem 2013. [DOI: 10.1002/ejoc.201201472] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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37
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Wu M, Han G, Wang Z, Liu Y, Wang Q. Synthesis and antiviral activities of antofine analogues with different C-6 substituent groups. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:1030-1035. [PMID: 23320928 DOI: 10.1021/jf304905k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
On the basis of previous structure-activity relationship (SAR) and antiviral mechanism studies, antofine analogues with different substituent groups at the C-6 position targeting tobacco mosaic virus (TMV) RNA were synthesized for the first time. The antofine analogues 1a-8a and 1b-9b were evaluated for their antiviral activity against TMV. The SAR study of antofine analogues is discussed. Most of the compounds were found to exhibit higher antiviral activity than commercial Ningnanmycin in vitro and in vivo. The groups with hydrogen donor or electron-withdrawing groups at the C-6 position were found to be favorable for antiviral activity.
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Affiliation(s)
- Meng Wu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Nankai University , Tianjin 300071, People's Republic of China
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38
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Kwon Y, Song J, Lee B, In J, Song H, Chung HJ, Lee SK, Kim S. Design, synthesis, and evaluation of a water-soluble antofine analogue with high antiproliferative and antitumor activity. Bioorg Med Chem 2013; 21:1006-17. [DOI: 10.1016/j.bmc.2012.11.039] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Revised: 11/12/2012] [Accepted: 11/16/2012] [Indexed: 12/25/2022]
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39
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40
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Wu M, Wang ZW, Liu YX, Song HB, Zhang A, Meng LH, Wang QM. Different salt derivatives of phenanthroindolizidine alkaloids display different in vitro antitumor activity. NEW J CHEM 2013. [DOI: 10.1039/c3nj00031a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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41
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Wang Y, Wong HC, Gullen EA, Lam W, Yang X, Shi Q, Lee KH, Cheng YC. Cryptopleurine analogs with modification of e ring exhibit different mechanism to rac-cryptopleurine and tylophorine. PLoS One 2012; 7:e51138. [PMID: 23251437 PMCID: PMC3519526 DOI: 10.1371/journal.pone.0051138] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Accepted: 10/29/2012] [Indexed: 01/01/2023] Open
Abstract
Tylophorine analogs exhibit a broad range of pharmacological activities, including anti-cancer, anti-inflammatory, anti-autoimmune, and anti-virus effects. Structure-activity relationship study of different structure tylophorine analogs can provide further understanding of their biological activity. Modifications on the E ring of the quinolizidine moiety of cryptopleurine analogs changed the potency and the selective inhibitory effect on NF-κB, AP-1, and CRE signaling pathways. Functional cryptopleurine analogs showed potent inhibition of NF-κB signaling pathway in both HepG2 and HEK-293 cell lines. The E ring structure analogs also differed in suppression of protein translation, and expression of cyclin D1. Our results showed that DCB-3503 or Rac-cryptopleurine could be a scaffold for modification to yield compounds with different mechanisms of action.
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Affiliation(s)
- Ying Wang
- Department of Pharmacology, Yale University School of Medicine, New Haven, Connecticut, United States of America
| | - Hui-Chyn Wong
- Department of Pharmacology, Yale University School of Medicine, New Haven, Connecticut, United States of America
| | - Elizabeth A. Gullen
- Department of Pharmacology, Yale University School of Medicine, New Haven, Connecticut, United States of America
| | - Wing Lam
- Department of Pharmacology, Yale University School of Medicine, New Haven, Connecticut, United States of America
| | - Xiaoming Yang
- Natural Products Research Laboratories, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina, United States of America
| | - Qian Shi
- Natural Products Research Laboratories, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina, United States of America
| | - Kuo-Hsiung Lee
- Natural Products Research Laboratories, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina, United States of America
- Chinese Medicine Research and Development Center, China Medical University and Hospital, Taichung, Taiwan
- * E-mail: (YCC); (KHL)
| | - Yung-Chi Cheng
- Department of Pharmacology, Yale University School of Medicine, New Haven, Connecticut, United States of America
- * E-mail: (YCC); (KHL)
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Su B, Cai C, Wang Q. Enantioselective approach to 13a-methylphenanthroindolizidine alkaloids. J Org Chem 2012; 77:7981-7. [PMID: 22946502 DOI: 10.1021/jo3012122] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The first enantioselective approach to 13a-methylphenanthroindolizidine alkaloids is reported, featuring an efficient stereoselective Seebach's alkylation and Pictet-Spengler cyclization. The proposed and other three most probable structures were ruled out, indicating hypoestestatin 1 needs further assignment.
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Affiliation(s)
- Bo Su
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, People's Republic of China
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Yang X, Shi Q, Lai CY, Chen CY, Ohkoshi E, Yang SC, Wang CY, Bastow KF, Wu TS, Pan SL, Teng CM, Yang PC, Lee KH. Antitumor agents 295. E-ring hydroxylated antofine and cryptopleurine analogues as antiproliferative agents: design, synthesis, and mechanistic studies. J Med Chem 2012; 55:6751-61. [PMID: 22823514 DOI: 10.1021/jm3001218] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Various E-ring hydroxylated antofine and cryptopleurine analogues were designed, synthesized, and tested against five human cancer cell lines. Interesting structure-activity relationship (SAR) correlations were found among these new compounds. The most potent compound 13b was further tested against a series of nonsmall cell lung cancer (NSCLC) cell lines in which it showed impressive antiproliferative activity. Mechanistic studies revealed that 13b is able to down-regulate HSP90 and β-catenin in A549 lung adenocarcinoma cells in a dose-dependent manner, suggesting a potential use for treating hedgehog pathway-driven tumorigenesis.
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Affiliation(s)
- Xiaoming Yang
- Natural Products Research Laboratories and ‡Division of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina , Chapel Hill, North Carolina 27599-7568, United States
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Wang Z, Wu M, Wang Y, Li Z, Wang L, Han G, Chen F, Liu Y, Wang K, Zhang A, Meng L, Wang Q. Synthesis and SAR studies of phenanthroindolizidine and phenanthroquinolizidine alkaloids as potent anti-tumor agents. Eur J Med Chem 2012; 51:250-8. [DOI: 10.1016/j.ejmech.2012.02.048] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2011] [Revised: 02/06/2012] [Accepted: 02/23/2012] [Indexed: 12/29/2022]
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Lv H, Ren J, Ma S, Xu S, Qu J, Liu Z, Zhou Q, Chen X, Yu S. Synthesis, biological evaluation and mechanism studies of deoxytylophorinine and its derivatives as potential anticancer agents. PLoS One 2012; 7:e30342. [PMID: 22276180 PMCID: PMC3261902 DOI: 10.1371/journal.pone.0030342] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2011] [Accepted: 12/14/2011] [Indexed: 12/30/2022] Open
Abstract
Previous studies indicated that (+)-13a-(S)-deoxytylophorinine (1) showed profound anti-cancer activities both in vitro and in vivo and could penetrate the blood brain barrier to distribute well in brain tissues. CNS toxicity, one of the main factors to hinder the development of phenanthroindolizidines, was not obviously found in 1. Based on its fascinating activities, thirty-four derivatives were designed, synthesized; their cytotoxic activities in vitro were tested to discover more excellent anticancer agents. Considering the distinctive mechanism of 1 and interesting SAR of deoxytylophorinine and its derivatives, the specific impacts of these compounds on cellular progress as cell signaling transduction pathways and cell cycle were proceeded with seven representative compounds. 1 as well as three most potent compounds, 9, 32, 33, and three less active compounds, 12, 16, 35, were selected to proform this study to have a relatively deep view of cancer cell growth-inhibitory characteristics. It was found that the expressions of phospho-Akt, Akt, phospho-ERK, and ERK in A549 cells were greater down-regulated by the potent compounds than by the less active compounds in the Western blot analysis. To the best of our knowledge, this is the first report describing phenanthroindolizidines alkaloids display influence on the crucial cell signaling proteins, ERK. Moreover, the expressions of cyclin A, cyclin D1 and CDK2 proteins depressed more dramatically when the cells were treated with 1, 9, 32, and 33. Then, these four excellent compounds were subjected to flow cytometric analysis, and an increase in S-phase was observed in A549 cells. Since the molecular level assay results of Western blot for phospho-Akt, Akt, phospho-ERK, ERK, and cyclins were relevant to the potency of compounds in cellular level, we speculated that this series of compounds exhibit anticancer activities through blocking PI3K and MAPK signaling transduction pathways and interfering with the cell cycle progression.
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Affiliation(s)
- Haining Lv
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Jinhong Ren
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Shuanggang Ma
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Song Xu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Jing Qu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Zhenjia Liu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Qing Zhou
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Xiaoguang Chen
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Shishan Yu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
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Pansare SV, Dyapa R. Enantioselective approach to functionalized quinolizidines: synthesis of (+)-julandine and (+)-cryptopleurine. Org Biomol Chem 2012; 10:6776-84. [DOI: 10.1039/c2ob25689d] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Yang X, Shi Q, Yang SC, Chen CY, Yu SL, Bastow KF, Morris-Natschke SL, Wu PC, Lai CY, Wu TS, Pan SL, Teng CM, Lin JC, Yang PC, Lee KH. Antitumor agents 288: design, synthesis, SAR, and biological studies of novel heteroatom-incorporated antofine and cryptopleurine analogues as potent and selective antitumor agents. J Med Chem 2011; 54:5097-107. [PMID: 21668000 DOI: 10.1021/jm200330s] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Novel heteroatom-incorporated antofine and cryptopleurine analogues were designed, synthesized, and tested against a panel of five cancer cell lines. Two new S-13-oxo analogues (11 and 16) exhibited potent cell growth inhibition in vitro (GI(50): 9 nM and 20 nM). Interestingly, both compounds displayed improved selectivity among different cancer cell lines, in contrast to the natural products antofine and cryptopleurine. Mechanism of action (MOA) studies suggested that R-antofine promotes dysregulation of DNA replication during early S phase, while no similar effects were observed for 11 and 15 on corresponding replication initiation complexes. Compound 11 also showed greatly reduced cytotoxicity against normal cells and moderate antitumor activity against HT-29 human colorectal adenocarcinoma xenograft in mice without overt toxicity.
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Affiliation(s)
- Xiaoming Yang
- Natural Products Research Laboratories, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599-7568, USA
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Devendra B, Srinivas N, Naik G. Direct Somatic Embryogenesis and Synthetic Seed Production from Tylophora indica (Burm.f.) Merrill an Endangered, Medicinally Important Plant. ACTA ACUST UNITED AC 2011. [DOI: 10.3923/ijb.2011.216.222] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Ikeda T, Yaegashi T, Matsuzaki T, Hashimoto S, Sawada S. Asymmetric synthesis of phenanthroindolizidine alkaloids with hydroxyl group at the C14 position and evaluation of their antitumor activities. Bioorg Med Chem Lett 2011; 21:342-5. [DOI: 10.1016/j.bmcl.2010.11.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2010] [Revised: 10/28/2010] [Accepted: 11/01/2010] [Indexed: 01/07/2023]
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Cui M, Song H, Feng A, Wang Z, Wang Q. Asymmetric Synthesis of (R)-Antofine and (R)-Cryptopleurine via Proline-Catalyzed Sequential α-Aminoxylation and Horner−Wadsworth−Emmons Olefination of Aldehyde. J Org Chem 2010; 75:7018-21. [DOI: 10.1021/jo101510x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Mingbo Cui
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Hongjian Song
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Anzheng Feng
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Ziwen Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
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