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Emirdağ S, Ulusoy NG, Aksel M. Design, Synthesis and Biological Evaluation of Novel Gypsogenin Derivatives as Potential Anticancer and Antimicrobial Agents. Chem Biodivers 2024; 21:e202400471. [PMID: 38594210 DOI: 10.1002/cbdv.202400471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 04/05/2024] [Accepted: 04/08/2024] [Indexed: 04/11/2024]
Abstract
Natural compounds are important sources for the treatment of chronic disorders such as cancer and microbial infectious disorders. In this research, Gypsogenin and its derivatives (2 a-2 f) have been tested against different cancer cell lines (MCF-7, HeLa, Jurkat and K562 cell lines) and further analyzed for cell proliferation, cell death type, and for act of the mechanism. Cell proliferation was determined by the MTT method and cell death types were analyzed with HO/PI staining. Fibroblast Growth Factor 1 (FGF-1), Interleukin 1 (IL-1), Interleukin 6 (IL-6), and Tumor Necrosis Factor Alpha (TNF-α), key players in breast cancer development and progression, were determined by Elisa kits. Results showed that compound 2 e inhibited the MCF-7 cell line proliferation with an IC50 value of 0.66±0.17 μM with 93.38 % apoptosis rate. Compound 2 e also decreased FGF-1, IL-1, IL-6, and TNF-α levels. Molecular docking studies performed in the binding site of FGFR-1 indicated that compound 2 e formed key hydrogen bonding with Arg627 and Asn568. Besides, compounds 2 a-2 f were evaluated for their antimicrobial activities against gram-negative and gram-positive bacteria and C. albicans via the microdilution method. Overall, compound 2 e stands out as a potential anticancer agent for future studies.
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Affiliation(s)
- Safiye Emirdağ
- Faculty of Science Dean's Department of Chemistry, Ege University, 35040, İzmir, Turkey
| | - Nafia Gökçe Ulusoy
- Faculty of Science Dean's Department of Chemistry, Ege University, 35040, İzmir, Turkey
| | - Mehran Aksel
- Department of Biophysics, Faculty of Medicine, Aydın Adnan Menderes University, 09010, Aydin, Turkey
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2
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Basagni F, Marotta G, Rosini M, Minarini A. Polyamine-Drug Conjugates: Do They Boost Drug Activity? Molecules 2023; 28:molecules28114518. [PMID: 37298993 DOI: 10.3390/molecules28114518] [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: 05/16/2023] [Revised: 05/30/2023] [Accepted: 05/31/2023] [Indexed: 06/12/2023] Open
Abstract
Over the past two decades, the strategy of conjugating polyamine tails with bioactive molecules such as anticancer and antimicrobial agents, as well as antioxidant and neuroprotective scaffolds, has been widely exploited to enhance their pharmacological profile. Polyamine transport is elevated in many pathological conditions, suggesting that the polyamine portion could improve cellular and subcellular uptake of the conjugate via the polyamine transporter system. In this review, we have presented a glimpse on the polyamine conjugate scenario, classified by therapeutic area, of the last decade with the aim of highlighting achievements and fostering future developments.
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Affiliation(s)
- Filippo Basagni
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum-University of Bologna, Via Belmeloro 6, 40126 Bologna, Italy
| | - Giambattista Marotta
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum-University of Bologna, Via Belmeloro 6, 40126 Bologna, Italy
| | - Michela Rosini
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum-University of Bologna, Via Belmeloro 6, 40126 Bologna, Italy
| | - Anna Minarini
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum-University of Bologna, Via Belmeloro 6, 40126 Bologna, Italy
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3
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Lang M, Ganapathy US, Mann L, Abdelaziz R, Seidel RW, Goddard R, Sequenzia I, Hoenke S, Schulze P, Aragaw WW, Csuk R, Dick T, Richter A. Synthesis and Characterization of Phenylalanine Amides Active against Mycobacterium abscessus and Other Mycobacteria. J Med Chem 2023; 66:5079-5098. [PMID: 37001025 PMCID: PMC10586324 DOI: 10.1021/acs.jmedchem.3c00009] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
Abstract
Nα-2-thiophenoyl-d-phenylalanine-2-morpholinoanilide [MMV688845, Pathogen Box; Medicines for Malaria Venture; IUPAC: (2R)-N-(1-((2-morpholinophenyl)amino)-1-oxo-3-phenylpropan-2-yl)thiophene-2-carboxamide)] is a hit compound, which shows activity against Mycobacterium abscessus (MIC90 6.25-12.5 μM) and other mycobacteria. This work describes derivatization of MMV688845 by introducing a thiomorpholine moiety and the preparation of the corresponding sulfones and sulfoxides. The molecular structures of three analogs are confirmed by X-ray crystallography. Conservation of the essential R configuration during synthesis is proven by chiral HPLC for an exemplary compound. All analogs were characterized in a MIC assay against M. abscessus, Mycobacterium intracellulare, Mycobacterium smegmatis, and Mycobacterium tuberculosis. The sulfone derivatives exhibit lower MIC90 values (M. abscessus: 0.78 μM), and the sulfoxides show higher aqueous solubility than the hit compound. The most potent derivatives possess bactericidal activity (99% inactivation of M. abscessus at 12.5 μM), while they are not cytotoxic against mammalian cell lines.
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Affiliation(s)
- Markus Lang
- Institut für Pharmazie, Martin-Luther-Universität Halle-Wittenberg, Wolfgang-Langenbeck-Str. 4, 06120 Halle (Saale), Germany
| | - Uday S. Ganapathy
- Center for Discovery and Innovation, Hackensack Meridian Health, 111 Ideation Way, 07110 Nutley, New Jersey, USA
| | - Lea Mann
- Institut für Pharmazie, Martin-Luther-Universität Halle-Wittenberg, Wolfgang-Langenbeck-Str. 4, 06120 Halle (Saale), Germany
| | - Rana Abdelaziz
- Institut für Pharmazie, Martin-Luther-Universität Halle-Wittenberg, Wolfgang-Langenbeck-Str. 4, 06120 Halle (Saale), Germany
| | - Rüdiger W. Seidel
- Institut für Pharmazie, Martin-Luther-Universität Halle-Wittenberg, Wolfgang-Langenbeck-Str. 4, 06120 Halle (Saale), Germany
| | - Richard Goddard
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Ilaria Sequenzia
- Institut für Pharmazie, Martin-Luther-Universität Halle-Wittenberg, Wolfgang-Langenbeck-Str. 4, 06120 Halle (Saale), Germany
| | - Sophie Hoenke
- Institut für Chemie, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 2, 06120 Halle (Saale), Germany
| | - Philipp Schulze
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Wassihun Wedajo Aragaw
- Center for Discovery and Innovation, Hackensack Meridian Health, 111 Ideation Way, 07110 Nutley, New Jersey, USA
| | - René Csuk
- Institut für Chemie, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 2, 06120 Halle (Saale), Germany
| | - Thomas Dick
- Center for Discovery and Innovation, Hackensack Meridian Health, 111 Ideation Way, 07110 Nutley, New Jersey, USA
- Department of Medical Sciences, Hackensack Meridian School of Medicine, 123 Metro Blvd, 07110 Nutley, New Jersey, USA
- Department of Microbiology and Immunology, Georgetown University, 3900 Reservoir Road, N.W., 20007 Washington DC, USA
| | - Adrian Richter
- Institut für Pharmazie, Martin-Luther-Universität Halle-Wittenberg, Wolfgang-Langenbeck-Str. 4, 06120 Halle (Saale), Germany
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Asiatic acid as a leading structure for derivatives combining sub-nanomolar cytotoxicity, high selectivity, and the ability to overcome drug resistance in human preclinical tumor models. Eur J Med Chem 2023; 250:115189. [PMID: 36780832 DOI: 10.1016/j.ejmech.2023.115189] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Revised: 02/01/2023] [Accepted: 02/04/2023] [Indexed: 02/11/2023]
Abstract
Amides and rhodamine B conjugates of different pentacyclic triterpene acids have been shown outstanding cytotoxicity for human tumor cells. Starting from asiatic acid, a new rhodamine B hybrid has been synthesized, and its cytotoxic activity was investigated employing several human tumor cell lines (A375 (melanoma), HT29 (colorectal carcinoma), MCF7 (breast adenocarcinoma), A2780 (ovarian carcinoma), HeLa (cervical carcinoma), (NIH 3T3 (non-malignant murine fibroblasts). For these conjugates of this kind it has been established that the spacer attached to the carboxyl group at ring E governs the magnitude of the cytotoxicity. These asiatic acid - rhodamine B conjugates were highly cytotoxic for human tumor cell lines but also selective. For example, 7, an acetylated homopiperazinyl spacered rhodamine B conjugate, held an EC50 = 0.8 nM for A2780 ovarian carcinoma cells. Additional staining experiments showed the rhodamine B conjugates to act as mitocans and to effect apoptosis. In further tests using 3D spheroid models of colorectal- and mamma carcinoma, 7 demonstrated activity in the lower nanomolar range and the ability to overcome resistance to clinically used standard chemotherapeutic drugs. Therefore 7 induces cytotoxic effects leading to an equal response in the chemotherapy of both sensitive and resistant tumor models. Analyses of mitochondrial function and glycolysis and respiration derived ATP production confirmed compound 7 to act as mitocan but also revealed a rapid perturbation of the cellular energy metabolism as the primary mechanism of action, which is completely different to conventional chemotherapeutic drugs and thereby explains the ability of compound 7 to overcome chemotherapeutic drug resistance.
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Synthesis, Anti-Influenza H1N1 and Anti-Dengue Activity of A-Ring Modified Oleanonic Acid Polyamine Derivatives. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27238499. [PMID: 36500593 PMCID: PMC9738632 DOI: 10.3390/molecules27238499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 11/16/2022] [Accepted: 11/24/2022] [Indexed: 12/07/2022]
Abstract
A series of sixteen A-ring modified (2,3-indolo-, 2-benzylidene) oleanonic acid derivatives, holding some cyclic amines, linear polyamines and benzylaminocarboxamides at C28, has been synthesized and screened for antiviral activity against influenza A/PuertoRico/8/34 (H1N1) and Dengue virus serotypes of DENV-1, -2, -3, -4. It was found that 28-homopiperazine 2 and 3-N-phthalyl 22 amides of oleanonic acid demonstrated high potency with selectivity index SI 27 (IC50 21 μM) and 42 (IC50 12 μM). Oleanonic acid aminoethylpiperazine amide 6 and C-azepano-erythrodiol 23 appeared to be the most effective compounds against DENV-1 (IC50's 67 and 107 μM) and -2 (IC50's 86 and 68 μM correspondingly) serotypes.
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Özdemir Z, Wimmer Z. Selected plant triterpenoids and their amide derivatives in cancer treatment: A review. PHYTOCHEMISTRY 2022; 203:113340. [PMID: 35987401 DOI: 10.1016/j.phytochem.2022.113340] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 07/20/2022] [Accepted: 07/21/2022] [Indexed: 05/20/2023]
Abstract
Medicinal plants have been used to treat different diseases throughout the human history namely in traditional medicine. Most of the plants mentioned in this review article belong among them, including those that are widely spread in the nature, counted frequently to be food and nutrition plants and producing pharmacologically important secondary metabolites. Triterpenoids represent an important group of plant secondary metabolites displaying emerging pharmacological importance. This review article sheds light on four selected triterpenoids, oleanolic, ursolic, betulinic and platanic acid, and on their amide derivatives as important natural or semisynthetic agents in cancer treatment, and, in part, in pathogenic microbe treatment. A literature search was made in the Web of Science for the given key words covering the required area of secondary plant metabolites and their amide derivatives. The most recently published findings on the biological activity of the selected triterpenoids, and on the structures and biological activity of their relevant amide derivatives have been summarized therein. Mainly anti-cancer effects, and, in part, antimicrobial and other effects of the four selected triterpenoids and their amide derivatives have also been reviewed. A comparison of the effects of the parent plant products and those of their amide derivatives has been made.
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Affiliation(s)
- Zulal Özdemir
- University of Chemistry and Technology in Prague, Technická 5, 16028, Prague 6, Czech Republic; Institute of Experimental Botany AS CR, Isotope Laboratory, Vídeňská 1083, 14220, Prague 4, Czech Republic.
| | - Zdeněk Wimmer
- University of Chemistry and Technology in Prague, Technická 5, 16028, Prague 6, Czech Republic; Institute of Experimental Botany AS CR, Isotope Laboratory, Vídeňská 1083, 14220, Prague 4, Czech Republic.
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7
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Kazakova O, Giniyatullina G, Babkov D, Wimmer Z. From Marine Metabolites to the Drugs of the Future: Squalamine, Trodusquemine, Their Steroid and Triterpene Analogues. Int J Mol Sci 2022; 23:ijms23031075. [PMID: 35162998 PMCID: PMC8834734 DOI: 10.3390/ijms23031075] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/12/2022] [Accepted: 01/14/2022] [Indexed: 12/13/2022] Open
Abstract
This review comprehensively describes the recent advances in the synthesis and pharmacological evaluation of steroid polyamines squalamine, trodusquemine, ceragenins, claramine, and their diverse analogs and derivatives, with a special focus on their complete synthesis from cholic acids, as well as an antibacterial and antiviral, neuroprotective, antiangiogenic, antitumor, antiobesity and weight-loss activity, antiatherogenic, regenerative, and anxiolytic properties. Trodusquemine is the most-studied small-molecule allosteric PTP1B inhibitor. The discovery of squalamine as the first representative of a previously unknown class of natural antibiotics of animal origin stimulated extensive research of terpenoids (especially triterpenoids) comprising polyamine fragments. During the last decade, this new class of biologically active semisynthetic natural product derivatives demonstrated the possibility to form supramolecular networks, which opens up many possibilities for the use of such structures for drug delivery systems in serum or other body fluids.
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Affiliation(s)
- Oxana Kazakova
- Ufa Institute of Chemistry, UFA Federal Research Centre of the Russian Academy of Sciences, Pr. Oktyabrya, 450054 Ufa, Russia;
- Correspondence:
| | - Gulnara Giniyatullina
- Ufa Institute of Chemistry, UFA Federal Research Centre of the Russian Academy of Sciences, Pr. Oktyabrya, 450054 Ufa, Russia;
| | - Denis Babkov
- Laboratory of Metabotropic Drugs, Scientific Center for Innovative Drugs, Volgograd State Medical University, Novorossiyskaya St. 39, 400087 Volgograd, Russia;
| | - Zdenek Wimmer
- Department of Chemistry of Natural Compounds, University of Chemistry and Technology in Prague, Technicka’ 5, Prague 6, 16628 Prague, Czech Republic;
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8
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Shang FF, Wang JY, Xu Q, Deng H, Guo HY, Jin X, Li X, Shen QK, Quan ZS. Design, synthesis of novel celastrol derivatives and study on their antitumor growth through HIF-1α pathway. Eur J Med Chem 2021; 220:113474. [PMID: 33930802 DOI: 10.1016/j.ejmech.2021.113474] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 04/09/2021] [Accepted: 04/09/2021] [Indexed: 12/16/2022]
Abstract
Four series of hypoxia-inducible factor-1 alpha (HIF-1α) functioning derivatives stemming from modifications to the C-29 carboxyl group of celastrol were designed and synthesized, and their anticancer activities were evaluated. To address the structure and activity relationship of each derivative, extensive structural changes were made. HRE luciferase reporter assay demonstrated that 12 modified compounds showed superior HIF-1α inhibitory activity. Among them, compound C6 exhibited the best features: firstly, the strongest HIF-1α inhibitory activity (IC50 = 0.05 μM, 5-fold higher than that of celastrol); secondly, lower cytotoxicity (22-fold lower, C6-16.85 μM vs celastrol-0.76 μM). Thus, the safety factor of C6 was about 112 times higher than that of celastrol. Western blot assay indicated that C6 may inhibit the expression of HIF-1α protein in cells. Additionally, C6 hindered tumor cell cloning, migration and induced cell apoptosis. It is worth mentioning that in the mouse tumor xenograft model, C6 (10 mg/kg) displayed good antitumor activity in vivo, showing a better inhibition rate (74.03%) than the reference compound 5-fluorouracil (inhibition rate, 59.58%). However, the celastrol treatment group experienced collective death after four doses of the drug. Moreover, C6 minimally affected the mouse weight, indicating that its application in vivo has little toxic effect. H&E staining experiments show that it could also exacerbate the degree of tumor cell damage. The results of water solubility experiment show that the solubility of C6 is increased by 1.36 times than that of celastrol. In conclusion, C6 is a promising antitumor agent through HIF-1α pathway.
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Affiliation(s)
- Fan-Fan Shang
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, 133002, China
| | - Jing Ying Wang
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, 133002, China
| | - Qian Xu
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, 133002, China
| | - Hao Deng
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, 133002, China
| | - Hong-Yan Guo
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, 133002, China
| | - Xuejun Jin
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, 133002, China
| | - Xiaoting Li
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, 133002, China; Department of Pharmaceutical Analysis, Wuya College of Innovation, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang, 110016, China.
| | - Qing-Kun Shen
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, 133002, China.
| | - Zhe-Shan Quan
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, 133002, China.
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Recent Advances in the Use of the Dimerization Strategy as a Means to Increase the Biological Potential of Natural or Synthetic Molecules. Molecules 2021; 26:molecules26082340. [PMID: 33920597 PMCID: PMC8073093 DOI: 10.3390/molecules26082340] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 04/12/2021] [Accepted: 04/14/2021] [Indexed: 02/07/2023] Open
Abstract
The design of C2-symmetric biologically active molecules is a subject of interest to the scientific community. It provides the possibility of discovering medicine with higher biological potential than the parent drugs. Such molecules are generally produced by classic chemistry, considering the shortness of reaction sequence and the efficacy for each step. This review describes and analyzes recent advances in the field and emphasizes selected C2-symmetric molecules (or axial symmetric molecules) made during the last 10 years. However, the description of the dimers is contextualized by prior work allowing its development, and they are categorized by their structure and/or by their properties. Hence, this review presents dimers composed of steroids, sugars, and nucleosides; known and synthetic anticancer agents; polyphenol compounds; terpenes, known and synthetic antibacterial agents; and natural products. A special focus on the anticancer potential of the dimers transpires throughout the review, notwithstanding their structure and/or primary biological properties.
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10
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Pawełczyk A, Zaprutko L. Anti-COVID drugs: repurposing existing drugs or search for new complex entities, strategies and perspectives. Future Med Chem 2020; 12:1743-1757. [PMID: 32698626 PMCID: PMC7377048 DOI: 10.4155/fmc-2020-0204] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 07/14/2020] [Indexed: 12/15/2022] Open
Abstract
At the end of 2019, a novel virus causing severe acute respiratory syndrome to spread globally. There are currently no effective drugs targeting SARS-CoV-2. In this study, based on the analysis of numerous references and selected methods of computational chemistry, the strategy of integrative structural modification of small molecules with antiviral activity into potential active complex molecules has been presented. Proposed molecules have been designed based on the structure of triterpene oleanolic acid and complemented by structures characteristic of selected anti-COVID therapy assisted drugs. Their pharmaceutical molecular parameters and the preliminary bioactivity were calculated and predicted. The results of the above analyses show that among the designed complex substances there are potential antiviral agents directed mainly on SARS-CoV-2.
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Affiliation(s)
- Anna Pawełczyk
- Poznan University of Medical Sciences, Department of Organic Chemistry, Grunwaldzka 6, Poznań 60-780, Poland
| | - Lucjusz Zaprutko
- Poznan University of Medical Sciences, Department of Organic Chemistry, Grunwaldzka 6, Poznań 60-780, Poland
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Macașoi I, Pavel IZ, Moacă AE, Avram Ș, David VL, Coricovac D, Mioc A, Spandidos DA, Tsatsakis A, Șoica C, Dumitrașcu V, Dehelean C. Mechanistic investigations of antitumor activity of a Rhodamine B‑oleanolic acid derivative bioconjugate. Oncol Rep 2020; 44:1169-1183. [PMID: 32705265 PMCID: PMC7388574 DOI: 10.3892/or.2020.7666] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 06/23/2020] [Indexed: 12/14/2022] Open
Abstract
Cancer remains a major health problem worldwide due to its high mortality rate. New therapeutic options highlight the importance of discovering new compounds that target the tumor microenvironment, interrupt angiogenesis and act selectively. The present study assessed the antitumor effect and investigated the mechanism of action of a rhodamine B-conjugated oleanolic acid derivative (RhodOA). Consequently, the compound was tested on different human tumor cell lines (A375 melanoma, A549 lung adenocarcinoma and MDA-MB-231 breast adenocarcinoma) and on a non-tumor cell line HaCaT human keratinocyte. RhodOA produced a dose-dependent decrease in tumor cell viability especially in the melanoma cells while affecting the keratinocytes less. In melanoma cells, RhodOA reduced cell migration and produced condensation of cell nuclei and of actin fibers. Furthermore, an impairment in melanoma cell mitochondrial function was observed, while the mitochondrial function of keratinocytes was left intact. In the in ovo chorioallantoic membrane model, RhodOA elicited antiangiogenic effect, without showing irritation effect on the membrane. The study provides information on the selective antitumor effect of the derivative and its ability to inhibit cellular respiration, therefore RhodOA can be classified as ‘MITOCAN’.
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Affiliation(s)
- Ioana Macașoi
- Department of Toxicology and Drug Industry, Faculty of Pharmacy, 'Victor Babes', University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Ioana Zinuca Pavel
- Department of Pharmacognosy, Faculty of Pharmacy, 'Victor Babes', University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Alina Elena Moacă
- Department of Toxicology and Drug Industry, Faculty of Pharmacy, 'Victor Babes', University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Ștefana Avram
- Department of Pharmacognosy, Faculty of Pharmacy, 'Victor Babes', University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Vlad Laurențiu David
- Department of Pediatric Surgery and Orthopedics, Faculty of Medicine, 'Victor Babes', University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Dorina Coricovac
- Department of Toxicology and Drug Industry, Faculty of Pharmacy, 'Victor Babes', University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Alexandra Mioc
- Department of Anatomy, Physiology and Pathophysiology, Faculty of Pharmacy, 'Victor Babes', University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Demetrios A Spandidos
- Laboratory of Clinical Virology, Medical School, University of Crete, 70013 Heraklion, Greece
| | - Aristidis Tsatsakis
- Department of Forensic Sciences and Toxicology, Faculty of Medicine, University of Crete, 71003 Heraklion, Greece
| | - Codruța Șoica
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, 'Victor Babes', University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Victor Dumitrașcu
- Department of Pharmacology, Faculty of Medicine, 'Victor Babes', University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Cristina Dehelean
- Department of Toxicology and Drug Industry, Faculty of Pharmacy, 'Victor Babes', University of Medicine and Pharmacy, 300041 Timisoara, Romania
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12
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Kahnt M, Loesche A, Serbian I, Hoenke S, Fischer L, Al-Harrasi A, Csuk R. The cytotoxicity of oleanane derived aminocarboxamides depends on their aminoalkyl substituents. Steroids 2019; 149:108422. [PMID: 31175922 DOI: 10.1016/j.steroids.2019.05.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 05/27/2019] [Accepted: 05/29/2019] [Indexed: 12/24/2022]
Abstract
Several oligo-methylene diamine derived carboxamides of oleanolic and maslinic acid have been prepared, and substitutions of the terminal primary amine as well as variations of the length of alkyl chain of the diamine moiety were made. Biological evaluation of their cytotoxic activity was performed using photometric sulforhodamin B assays employing a panel of different human cancer cell lines. These experiments showed most of the carboxamides to be cytotoxic with EC50 values below 10 µM. Prolongation of the alkyl chain length initially reduced EC50 values to a minimum, but a decrease in cytotoxicity was observed for longer alkyl chains. Variation of substituents at the terminal nitrogen atom, however, did not influence EC50 values at all. Noteworthy results were obtained particularly for compounds 4, 6 and 23 as indicated by EC50 values lower than 2 µM, and in case of a maslinic derivative 23 even an increased tumor/non-tumor cell selectivity was observed. These compounds were further investigated using fluorescence microscopy and flow cytometry analysis, which revealed 6 to show indications of apoptosis.
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Affiliation(s)
- Michael Kahnt
- Martin-Luther-University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany
| | - Anne Loesche
- Martin-Luther-University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany
| | - Immo Serbian
- Martin-Luther-University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany
| | - Sophie Hoenke
- Martin-Luther-University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany
| | - Lucie Fischer
- Martin-Luther-University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany
| | - Ahmed Al-Harrasi
- University of Nizwa, Natural and Medical Sciences Research Center, P.O. Box 33, Birkat Al Mauz, Nizwa 616, Oman
| | - René Csuk
- Martin-Luther-University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany.
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13
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Loesche A, Kahnt M, Serbian I, Brandt W, Csuk R. Triterpene-Based Carboxamides Act as Good Inhibitors of Butyrylcholinesterase. Molecules 2019; 24:E948. [PMID: 30866589 PMCID: PMC6429507 DOI: 10.3390/molecules24050948] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 02/25/2019] [Accepted: 03/02/2019] [Indexed: 01/22/2023] Open
Abstract
A set of overall 40 carboxamides was prepared from five different natural occurring triterpenoids including oleanolic, ursolic, maslinic, betulinic, and platanic acid. All of which were derived from ethylene diamine holding an additional substituent connected to the ethylene diamine group. These derivatives were evaluated regarding their inhibitory activity of the enzymes acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) employing Ellman's assay. We further determined the type of inhibition and inhibition constants. Carboxamides derived from platanic acid have been shown to be potent and selective BChE inhibitors. Especially the mixed-type inhibitor (3β)-N-(2-pyrrolidin-1-ylethyl)-3-acetyloxy-20-oxo-30-norlupan-28-amide (35) showed a remarkably low Ki of 0.07 ± 0.01 µM (Ki' = 2.38 ± 0.48 µM) for the inhibition of BChE.
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Affiliation(s)
- Anne Loesche
- Martin-Luther-University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany.
| | - Michael Kahnt
- Martin-Luther-University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany.
| | - Immo Serbian
- Martin-Luther-University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany.
| | - Wolfgang Brandt
- Leibniz Institute of Plant Biochemistry, Bioorganic Chemistry, Weinberg 3, D-06120 Halle (Saale), Germany.
| | - René Csuk
- Martin-Luther-University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany.
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14
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Chen Y, Zhang M, Li Z, Luo D, Li L, Yu T, Long Y. Synthesis and Antitumor Activities of 1, 3, 4-Thiadiazole Triazene Amide Derivatives. CHINESE J ORG CHEM 2019. [DOI: 10.6023/cjoc201905035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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15
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Design and Synthesis of C-19 Isosteviol Derivatives as Potent and Highly Selective Antiproliferative Agents. Molecules 2018; 24:molecules24010121. [PMID: 30598028 PMCID: PMC6337650 DOI: 10.3390/molecules24010121] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 12/24/2018] [Accepted: 12/24/2018] [Indexed: 12/29/2022] Open
Abstract
Six series of novel isosteviol derivatives; modified in the C-19 position; were synthesized; and their antiproliferative activity was evaluated against three human cancer cell lines (HCT-116; BEL-7402; HepG2) and the human L02 normal cell line in vitro. Most of the derivatives tested here exhibited improved antiproliferative activity with high selectivity when compared with the parent compound isosteviol and the positive control drug 5-fluorouracil. Among these derivatives; compound 5d exhibited the most potent antiproliferative activity and commendable selectivity between cancer and normal cells. In addition; compound 5d inhibited the colony formation of HCT-116 cells in a concentration-dependent manner. Further studies revealed that compound 5d arrested the HCT-116 cell cycle in the S phase; and western blot analysis demonstrated the mechanism may be correlated with a change in the expression of cyclin A; cyclin B1; and cyclin E1. Furthermore; the results of a docking study that involved placing compound 5d into the CDK2/cyclin A binding site revealed that its mode of action was possibly as a CDK2/cyclin A inhibitor.
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16
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Avula SK, Khan A, Rehman NU, Anwar MU, Al-Abri Z, Wadood A, Riaz M, Csuk R, Al-Harrasi A. Synthesis of 1H-1,2,3-triazole derivatives as new α-glucosidase inhibitors and their molecular docking studies. Bioorg Chem 2018; 81:98-106. [DOI: 10.1016/j.bioorg.2018.08.008] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 07/28/2018] [Accepted: 08/06/2018] [Indexed: 10/28/2022]
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17
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Kahnt M, Fischer Née Heller L, Al-Harrasi A, Csuk R. Ethylenediamine Derived Carboxamides of Betulinic and Ursolic Acid as Potential Cytotoxic Agents. Molecules 2018; 23:E2558. [PMID: 30297604 PMCID: PMC6222718 DOI: 10.3390/molecules23102558] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 09/26/2018] [Accepted: 10/03/2018] [Indexed: 01/03/2023] Open
Abstract
Two easily accessible, natural occurring triterpenoids, betulinic and ursolic acid, were used as starting materials for the synthesis of novel cytotoxic agents. A set of 28 ethylenediamine-spacered carboxamides was prepared holding an additional substituent connected to the ethylenediamine group. The compounds were screened in SRB assays to evaluate their cytotoxic activity employing several human tumor cell lines. Betulinic acid-derived carboxamides 17⁻30 showed significantly higher cytotoxicity than their ursolic acid analogs 3⁻16. In particular, compounds 25 and 26 were highly cytotoxic, as indicated by EC50 values lower than 1 μM.
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Affiliation(s)
- Michael Kahnt
- Division of Organic Chemistry, Martin-Luther-University Halle-Wittenberg, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany.
| | - Lucie Fischer Née Heller
- Division of Organic Chemistry, Martin-Luther-University Halle-Wittenberg, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany.
| | - Ahmed Al-Harrasi
- Chair of Oman's Medicinal Plants and Marine Natural Products, University of Nizwa, P.O. Box 33, Birkat Al-Mauz, Nizwa 611, Oman.
| | - René Csuk
- Division of Organic Chemistry, Martin-Luther-University Halle-Wittenberg, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany.
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18
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Kahnt M, Wiemann J, Fischer L, Sommerwerk S, Csuk R. Transformation of asiatic acid into a mitocanic, bimodal-acting rhodamine B conjugate of nanomolar cytotoxicity. Eur J Med Chem 2018; 159:143-148. [PMID: 30278332 DOI: 10.1016/j.ejmech.2018.09.066] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 09/24/2018] [Accepted: 09/25/2018] [Indexed: 01/06/2023]
Abstract
Based on their biological activity natural products continue to represent optimal lead structures for the development of novel drug candidates. We focused on the syntheses of several derivatives of the triterpene asiatic acid and on the evaluation of their cytotoxic activity in a photometric sulforhodamin B assay. Especially, benzamide 2 and rhodamine B conjugate 11 show a distinct cytotoxicity for several human tumor cell lines, e.g. EC50 (A2780) = 110 ± 1 nM and EC50 (A2780) = 8 ± 2 nM, respectively. Interestingly, compound 11 showed for two human tumor cell lines (HT29 and 518A2) non-linear, bimodal dose-response relationships.
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Affiliation(s)
- Michael Kahnt
- Martin-Luther-University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes-Str. 2, D-06120, Halle (Saale), Germany
| | - Jana Wiemann
- Martin-Luther-University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes-Str. 2, D-06120, Halle (Saale), Germany
| | - Lucie Fischer
- Martin-Luther-University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes-Str. 2, D-06120, Halle (Saale), Germany
| | - Sven Sommerwerk
- Martin-Luther-University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes-Str. 2, D-06120, Halle (Saale), Germany
| | - René Csuk
- Martin-Luther-University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes-Str. 2, D-06120, Halle (Saale), Germany.
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19
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Medina-O’Donnell M, Rivas F, Reyes-Zurita FJ, Martinez A, Lupiañez JA, Parra A. Diamine and PEGylated-diamine conjugates of triterpenic acids as potential anticancer agents. Eur J Med Chem 2018; 148:325-336. [DOI: 10.1016/j.ejmech.2018.02.044] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 12/21/2017] [Accepted: 02/13/2018] [Indexed: 02/06/2023]
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20
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Zhang H, Mu Y, Wang F, Song L, Sun J, Liu Y, Sun J. Synthesis of gypsogenin derivatives with capabilities to arrest cell cycle and induce apoptosis in human cancer cells. ROYAL SOCIETY OPEN SCIENCE 2018; 5:171510. [PMID: 29410854 PMCID: PMC5792931 DOI: 10.1098/rsos.171510] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 12/15/2017] [Indexed: 06/08/2023]
Abstract
Thirty-two gypsogenin derivatives were synthesized and screened for their cytotoxic activities. Their structures were established using IR, 1H NMR, 13C NMR, and LC-MS spectroscopic data. In MTT assays nearly all the compounds displayed good cytotoxicity in the low μM range for several human tumour cell lines (A549, LOVO, SKOV3 and HepG2). Low IC50 values were obtained especially for the carboxamides 7a-7j, for an oxime derivative 3 and a (2,4-dinitrophenyl)hydrazono derivative 4. In particular, the IC50 values of compounds 4 (IC50 = 2.97 ± 1.13 µΜ) and 7 g (IC50 = 3.59 ± 2.04 µΜ) against LOVO cells were found to be much lower than those of the other derivatives and parent compound. These compounds were submitted to an extensive biological testing and proved compounds 4 and 7 g to act mainly by an arrest of the tumour cells in the S phase of the cell cycle. In addition, compounds 4 and 7 g triggered the apoptotic pathway in cancer cells, showing high apoptosis ratios.
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Affiliation(s)
- Haochao Zhang
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan 250200, Shandong, China
- Institute of Materia Medica, Shandong Academy of Medical Sciences, Jinan 250062, Shandong, China
| | - Yanling Mu
- Institute of Materia Medica, Shandong Academy of Medical Sciences, Jinan 250062, Shandong, China
- Key Laboratory for Biotech-Drugs Ministry of Health, Jinan 250062, Shandong, China
- Key Laboratory for Rare and Uncommon Diseases of Shandong Province, Jinan 250062, Shandong, China
| | - Fengling Wang
- Institute of Materia Medica, Shandong Academy of Medical Sciences, Jinan 250062, Shandong, China
- Key Laboratory for Biotech-Drugs Ministry of Health, Jinan 250062, Shandong, China
- Key Laboratory for Rare and Uncommon Diseases of Shandong Province, Jinan 250062, Shandong, China
| | - Leling Song
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan 250200, Shandong, China
- Institute of Materia Medica, Shandong Academy of Medical Sciences, Jinan 250062, Shandong, China
| | - Jie Sun
- Institute of Materia Medica, Shandong Academy of Medical Sciences, Jinan 250062, Shandong, China
- Key Laboratory for Biotech-Drugs Ministry of Health, Jinan 250062, Shandong, China
- Key Laboratory for Rare and Uncommon Diseases of Shandong Province, Jinan 250062, Shandong, China
| | - Yongjun Liu
- Institute of Materia Medica, Shandong Academy of Medical Sciences, Jinan 250062, Shandong, China
- Key Laboratory for Biotech-Drugs Ministry of Health, Jinan 250062, Shandong, China
- Key Laboratory for Rare and Uncommon Diseases of Shandong Province, Jinan 250062, Shandong, China
| | - Jingyong Sun
- Institute of Materia Medica, Shandong Academy of Medical Sciences, Jinan 250062, Shandong, China
- Key Laboratory for Biotech-Drugs Ministry of Health, Jinan 250062, Shandong, China
- Key Laboratory for Rare and Uncommon Diseases of Shandong Province, Jinan 250062, Shandong, China
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21
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Salvador JA, Leal AS, Valdeira AS, Gonçalves BM, Alho DP, Figueiredo SA, Silvestre SM, Mendes VI. Oleanane-, ursane-, and quinone methide friedelane-type triterpenoid derivatives: Recent advances in cancer treatment. Eur J Med Chem 2017; 142:95-130. [DOI: 10.1016/j.ejmech.2017.07.013] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 07/06/2017] [Accepted: 07/10/2017] [Indexed: 12/11/2022]
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22
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Kahnt M, Heller L, Grabandt P, Al-Harrasi A, Csuk R. Platanic acid: A new scaffold for the synthesis of cytotoxic agents. Eur J Med Chem 2017; 143:259-265. [PMID: 29197730 DOI: 10.1016/j.ejmech.2017.11.046] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 10/25/2017] [Accepted: 11/18/2017] [Indexed: 11/18/2022]
Abstract
Thirty-seven different derivatives (2-38) have been prepared from platanic acid, a natural occurring triterpenoid. Main emphasis was the introduction of several N-containing functional groups such as amines, amides and oximes and their screening for cytotoxic activity employing several human tumor cell lines using SRB assays. In these SRB assays, nearly all compounds showed good cytotoxicity for these human tumor cell lines. Two compounds (17 and 38), however, were submitted to extended biological testing and investigated with respect to their mode of action using fluorescence microscopy and FACS analysis. Compound 17, a methyl (3β, 20R) 3-acetyloxy-20-amino-30-norlupan-28-oate, induced apoptosis in A2780 ovarian carcinoma cells.
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Affiliation(s)
- Michael Kahnt
- Martin-Luther-University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany
| | - Lucie Heller
- Martin-Luther-University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany
| | - Patricia Grabandt
- Martin-Luther-University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany
| | - Ahmed Al-Harrasi
- University of Nizwa, Chair of Oman's Medicinal Plants and Marine Natural Products, PO Box 33, Birkat Al-Mauz, Nizwa, Oman
| | - René Csuk
- Martin-Luther-University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany.
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23
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Medina-O'Donnell M, Rivas F, Reyes-Zurita FJ, Martinez A, Galisteo-González F, Lupiañez JA, Parra A. Synthesis and in vitro antiproliferative evaluation of PEGylated triterpene acids. Fitoterapia 2017; 120:25-40. [PMID: 28552598 DOI: 10.1016/j.fitote.2017.05.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 05/12/2017] [Accepted: 05/16/2017] [Indexed: 11/24/2022]
Abstract
A set of PEGylated derivatives of oleanolic and maslinic acids has been semi-synthesised, attaching ethylene glycol, diethylene glycol, triethylene glycol or tetraethylene glycol to the C-28 carboxyl group of these natural triterpenes and some derivatives. Another set of PEGylated derivatives has been semi-synthesised by connecting the same four ethylene glycols to the hydroxyl groups of the A ring of these triterpenic acids, through a carbonate linker, by reaction with trichloromethyl chloroformate. The aqueous solubility of some of these PEGylated derivatives has been compared with that of maslinic acid. The cytotoxic effects of 28 triterpenic PEGylated derivatives in three cancer-cell lines (B16-F10, HT29, and Hep G2) have been assayed. The best results have been achieved with the HT29 cell line, and specifically with the oleanolic acid derivatives having ethylene glycol or tetraethylene glycol attached to the C-28 carboxyl group, which are approximately 27-fold more effective than their natural precursor. Eight PEGylated derivatives have been selected to compare the cytotoxicity results in the HT29 cancer-cell line with those of a non-tumour cell line of the same tissue (IEC-18), four of which were less cytotoxic in the non-tumour cell line. These compounds showed apoptotic effects on treated cells, with percentages of total apoptosis between 20% and 53%, relative to control, at 72h and IC50 concentration, and between 29% to 62%, relative to control, for the same time and IC80 concentration. We have also found that with the treatment of these compounds in HT29 cancer cells, cell-cycle arrest occurred in the G0/G1 phase. Finally, we have also studied changes in mitochondrial membrane potential during apoptosis of HT29 cancer cells, and the results suggest an activation of the extrinsic apoptotic pathway for these compounds.
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Affiliation(s)
- Marta Medina-O'Donnell
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Granada, E-18071 Granada, Spain
| | - Francisco Rivas
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Granada, E-18071 Granada, Spain.
| | - Fernando J Reyes-Zurita
- Departamento de Bioquímica y Biología Molecular I, Facultad de Ciencias, Universidad de Granada, E-18071 Granada, Spain.
| | - Antonio Martinez
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Granada, E-18071 Granada, Spain
| | | | - Jose A Lupiañez
- Departamento de Bioquímica y Biología Molecular I, Facultad de Ciencias, Universidad de Granada, E-18071 Granada, Spain
| | - Andres Parra
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Granada, E-18071 Granada, Spain.
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24
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Borkova L, Adamek R, Kalina P, Drašar P, Dzubak P, Gurska S, Rehulka J, Hajduch M, Urban M, Sarek J. Synthesis and Cytotoxic Activity of Triterpenoid Thiazoles Derived from Allobetulin, Methyl Betulonate, Methyl Oleanonate, and Oleanonic Acid. ChemMedChem 2017; 12:390-398. [PMID: 28084676 DOI: 10.1002/cmdc.201600626] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 01/12/2017] [Indexed: 12/16/2022]
Abstract
A total of 41 new triterpenoids were prepared from allobetulone, methyl betulonate, methyl oleanonate, and oleanonic acid to study their influence on cancer cells. Each 3-oxotriterpene was brominated at C2 and substituted with thiocyanate; subsequent cyclization with the appropriate ammonium salts gave N-substituted thiazoles. All compounds were tested for their in vitro cytotoxic activity on eight cancer cell lines and two non-cancer fibroblasts. 2-Bromoallobetulone (2 b) methyl 2-bromobetulonate (3 b), 2-bromooleanonic acid (5 b), and 2-thiocyanooleanonic acid (5 c) were best, with IC50 values less than 10 μm against CCRF-CEM cells (e.g., 3 b: IC50 =2.9 μm) as well as 2'-(diethylamino)olean-12(13)-eno[2,3-d]thiazole-28-oic acid (5 f, IC50 =9.7 μm) and 2'-(N-methylpiperazino)olean-12(13)-eno[2,3-d]thiazole-28-oic acid (5 k, IC50 =11.4 μm). Compound 5 c leads to the accumulation of cells in the G2 phase of the cell cycle and inhibits RNA and DNA synthesis significantly at 1×IC50 . The G2 /M cell-cycle arrest probably corresponds to the inhibition of DNA/RNA synthesis, similar to the mechanism of action of actinomycin D. Compound 5 c is new, active, and nontoxic; it is therefore the most promising compound in this series for future drug development. Methyl 2-bromobetulonate (3 b) and methyl 2-thiocyanometulonate (3 c) were found to inhibit nucleic acid synthesis only at 5×IC50 . We assume that in 3 b and 3 c (unlike in 5 c), DNA/RNA inhibition is a nonspecific event, and an unknown primary cytotoxic target is activated at 1×IC50 or lower concentration.
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Affiliation(s)
- Lucie Borkova
- Department of Organic Chemistry, Faculty of Science, Palacky University in Olomouc, 17. listopadu 1192/12, 771 46, Olomouc, Czech Republic
| | - Richard Adamek
- Department of Organic Chemistry, Faculty of Science, Palacky University in Olomouc, 17. listopadu 1192/12, 771 46, Olomouc, Czech Republic
| | - Petr Kalina
- Department of Chemistry of Natural Compounds, Faculty of Science, University of Chemistry and Technology, Technicka 5, 166 28, Prague, Czech Republic
| | - Pavel Drašar
- Department of Chemistry of Natural Compounds, Faculty of Science, University of Chemistry and Technology, Technicka 5, 166 28, Prague, Czech Republic
| | - Petr Dzubak
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 5, 779 00, Olomouc, Czech Republic
| | - Sona Gurska
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 5, 779 00, Olomouc, Czech Republic
| | - Jiri Rehulka
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 5, 779 00, Olomouc, Czech Republic
| | - Marian Hajduch
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 5, 779 00, Olomouc, Czech Republic
| | - Milan Urban
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 5, 779 00, Olomouc, Czech Republic
| | - Jan Sarek
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 5, 779 00, Olomouc, Czech Republic
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