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Rashan LJ, Özenver N, Boulos JC, Dawood M, Roos WP, Franke K, Papasotiriou I, Wessjohann LA, Fiebig HH, Efferth T. Molecular Modes of Action of an Aqueous Nerium oleander Extract in Cancer Cells In Vitro and In Vivo. Molecules 2023; 28:molecules28041871. [PMID: 36838857 PMCID: PMC9960564 DOI: 10.3390/molecules28041871] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 02/06/2023] [Accepted: 02/09/2023] [Indexed: 02/18/2023] Open
Abstract
Cancer drug resistance remains a major obstacle in clinical oncology. As most anticancer drugs are of natural origin, we investigated the anticancer potential of a standardized cold-water leaf extract from Nerium oleander L., termed Breastin. The phytochemical characterization by nuclear magnetic resonance spectroscopy (NMR) and low- and high-resolution mass spectrometry revealed several monoglycosidic cardenolides as major constituents (adynerin, neritaloside, odoroside A, odoroside H, oleandrin, and vanderoside). Breastin inhibited the growth of 14 cell lines from hematopoietic tumors and 5 of 6 carcinomas. Remarkably, the cellular responsiveness of odoroside H and neritaloside was not correlated with all other classical drug resistance mechanisms, i.e., ATP-binding cassette transporters (ABCB1, ABCB5, ABCC1, ABCG2), oncogenes (EGFR, RAS), tumor suppressors (TP53, WT1), and others (GSTP1, HSP90, proliferation rate), in 59 tumor cell lines of the National Cancer Institute (NCI, USA), indicating that Breastin may indeed bypass drug resistance. COMPARE analyses with 153 anticancer agents in 74 tumor cell lines of the Oncotest panel revealed frequent correlations of Breastin with mitosis-inhibiting drugs. Using tubulin-GFP-transfected U2OS cells and confocal microscopy, it was found that the microtubule-disturbing effect of Breastin was comparable to that of the tubulin-depolymerizing drug paclitaxel. This result was verified by a tubulin polymerization assay in vitro and molecular docking in silico. Proteome profiling of 3171 proteins in the NCI panel revealed protein subsets whose expression significantly correlated with cellular responsiveness to odoroside H and neritaloside, indicating that protein expression profiles can be identified to predict the sensitivity or resistance of tumor cells to Breastin constituents. Breastin moderately inhibited breast cancer xenograft tumors in vivo. Remarkably, in contrast to what was observed with paclitaxel monotherapy, the combination of paclitaxel and Breastin prevented tumor relapse, indicating Breastin's potential for drug combination regimens.
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Affiliation(s)
- Luay J. Rashan
- Frankincense Biodiversity Unit, Research Center, Dhofar University, Salalah 211, Oman
- Correspondence: (L.J.R.); (T.E.); Tel.: +968-2323-7357 (L.J.R.); +49-6131-3925751 (T.E.)
| | - Nadire Özenver
- Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, 55128 Mainz, Germany
- Department of Pharmacognosy, Faculty of Pharmacy, Hacettepe University, Ankara 06100, Turkey
| | - Joelle C. Boulos
- Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, 55128 Mainz, Germany
| | - Mona Dawood
- Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, 55128 Mainz, Germany
- 4HF Biotec GmbH, 79108 Freiburg, Germany
- Department of Molecular Biology, Faculty of Medical Laboratory Sciences, Al-Neelain University, Khartoum 12702, Sudan
| | - Wynand P. Roos
- Institute of Toxicology, Medical Center of the University Mainz, Obere Zahlbacher Straße 67, 55131 Mainz, Germany
| | - Katrin Franke
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry (IPB), Weinberg 3, 06120 Halle, Germany
| | | | - Ludger A. Wessjohann
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry (IPB), Weinberg 3, 06120 Halle, Germany
| | | | - Thomas Efferth
- Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, 55128 Mainz, Germany
- Correspondence: (L.J.R.); (T.E.); Tel.: +968-2323-7357 (L.J.R.); +49-6131-3925751 (T.E.)
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Nyamboki DK, Bedane KG, Hassan K, Spiteller M, Matasyoh JC. Cytotoxic compounds from the leaf of Bersama abyssinica subspecies abyssinica. PHYTOCHEMISTRY 2022; 198:113153. [PMID: 35240134 DOI: 10.1016/j.phytochem.2022.113153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 02/23/2022] [Accepted: 02/23/2022] [Indexed: 06/14/2023]
Abstract
From the leaves of Kenyan medicinal plant Bersama abyssinica Subspecies abyssinica, four previously undescribed compounds namely, three bufadienolides, 10β-formylpaulliniogenin B, 10β-formylpaulliniogenin A and 1β-acetoxy-3β,5β-dihydroxy-15-methoxy-16,19-dioxobufa-14(15),20,22-trienolide, and a phenolic compound 2,6,4'-trihydroxybenzophenone-4-O-(6‴-cinnamoyl)-β-D-glucoside were isolated together with four known compounds. The structural elucidation of the compounds was based on 1D and 2D NMR spectroscopy and HRMS data analyses. The relative configurations were defined by NOESY correlations. Cytotoxic activities on L929 and KB3.1 cell lines of the isolated compounds were investigated using MTT assay. The 1β-acetoxy-3β,5β-dihydroxy-15-methoxy-16,19-dioxobufa-14(15),20,22-trienolide showed significant cytotoxic activity against KB3.1 cell lines with IC50 of 3.9 ± 0.99 μM.
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Affiliation(s)
- Divinah Kwamboka Nyamboki
- Institute of Environmental Research (INFU), Department of Chemistry and Chemical Biology, TU Dortmund, Otto-Hahn-Straße 6, 44227, Dortmund, Germany; Department of Chemistry, Faculty of Sciences, Egerton University, P.O. Box 536, 20115, Egerton, Kenya
| | - Kibrom Gebreheiwot Bedane
- Institute of Environmental Research (INFU), Department of Chemistry and Chemical Biology, TU Dortmund, Otto-Hahn-Straße 6, 44227, Dortmund, Germany; Department of Chemistry, Addis Ababa University, P.O. Box 33658, Addis Ababa, Ethiopia
| | - Khadija Hassan
- Department of Microbial Drugs, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany; German Centre for Infection Research (DZIF), Partner Site Hannover-Braunschweig, 38124, Braunschweig, Germany
| | - Michael Spiteller
- Institute of Environmental Research (INFU), Department of Chemistry and Chemical Biology, TU Dortmund, Otto-Hahn-Straße 6, 44227, Dortmund, Germany
| | - Josphat Clement Matasyoh
- Institute of Environmental Research (INFU), Department of Chemistry and Chemical Biology, TU Dortmund, Otto-Hahn-Straße 6, 44227, Dortmund, Germany; Department of Chemistry, Faculty of Sciences, Egerton University, P.O. Box 536, 20115, Egerton, Kenya.
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Sagbo IJ, Otang-Mbeng W. Plants Used for the Traditional Management of Cancer in the Eastern Cape Province of South Africa: A Review of Ethnobotanical Surveys, Ethnopharmacological Studies and Active Phytochemicals. Molecules 2021; 26:4639. [PMID: 34361790 PMCID: PMC8347031 DOI: 10.3390/molecules26154639] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 07/17/2021] [Accepted: 07/20/2021] [Indexed: 01/04/2023] Open
Abstract
Cancer occurrence is rapidly increasing all over the world, including in developing countries. The current trend in cancer management requires the use of herbal remedies since the majority of anticancer drugs are known to be costly, with unwanted side effects. In the Eastern Cape province, the use of medicinal plants for cancer management has been climbing steadily over the past two decades due to their cultural belief, low cost, efficacy, and safety claims. With the aim of identifying some potential anticancer plants for probable drug development, this study was undertaken to review plants reported by ethnobotanical surveys in the Eastern Cape province of South Africa for the traditional management of cancer. Information regarding plants used for cancer management in the Eastern Cape province was obtained from multidisciplinary databases and ethnobotanical books. About 24 plant species belonging to twenty families have been reported to be used for the traditional management of cancer in the Eastern Cape province. Among the anticancer plant species, only 16 species have been explored scientifically for their anticancer activities. This review authenticated the use of anticancer plant species in the Eastern Cape province and, therefore, identified several promising unexplored species for further scientific evaluation.
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Affiliation(s)
- Idowu Jonas Sagbo
- School of Biology and Environmental Sciences, University of Mpumalanga, Private Bag X11283, Mbombela 1200, South Africa;
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Nyamboki DK, Bedane KG, Hassan K, Brieger L, Strohmann C, Spiteller M, Matasyoh JC. Cytotoxic Compounds from the Stem Bark of Two subsp. of Bersama abyssinica. JOURNAL OF NATURAL PRODUCTS 2021; 84:1453-1458. [PMID: 33974421 DOI: 10.1021/acs.jnatprod.0c01141] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Three new bufadienolides, namely, paulliniogenin A (1), paulliniogenin B (2), and 16β-formyloxybersamagenin 1,3,5-orthoacetate (3), together with two known bufadienolides and six known phenolic substances, were isolated from the stem bark of Bersama abyssinica subsp. abyssinica and B. abyssinica subsp. paullinioides. The structures of the compounds were elucidated based on their NMR and HRMS data analyses. The relative configurations were defined by single-crystal X-ray crystallography and NOESY correlations. Cytotoxicity against the L929 and KB3.1 cancer cell lines of the isolated compounds was investigated using an MTT assay. Paulliniogenin A (1) and 16β-hydroxybersamagenin-1,3,5-orthoacetate (4) showed cytotoxicity against the KB3.1 cell line with IC50 values of 1.4 ± 0.77 and 1.6 ± 0.81 μM, respectively. Moreover, paulliniogenin A (1) and paulliniogenin B (2) demonstrated weak activity against Staphylococcus aureus.
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Affiliation(s)
- Divinah K Nyamboki
- Department of Chemistry, Faculty of Sciences, Egerton University, P.O. Box 536, 20115 Egerton, Kenya
- Institute of Environmental Research (INFU), Department of Chemistry and Chemical Biology, TU Dortmund, Otto-Hahn-Straße 6, 44227 Dortmund, Germany
| | - Kibrom G Bedane
- Department of Chemistry, Addis Ababa University, P.O. Box 33658, 1230 Addis Ababa, Ethiopia
| | - Khadija Hassan
- Department of Microbial Drugs, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany
| | - Lukas Brieger
- Inorganic Chemistry, Department of Chemistry and Chemical Biology, TU Dortmund, Otto-Hahn-Straße 6, 44227 Dortmund, Germany
| | - Carsten Strohmann
- Inorganic Chemistry, Department of Chemistry and Chemical Biology, TU Dortmund, Otto-Hahn-Straße 6, 44227 Dortmund, Germany
| | - Michael Spiteller
- Institute of Environmental Research (INFU), Department of Chemistry and Chemical Biology, TU Dortmund, Otto-Hahn-Straße 6, 44227 Dortmund, Germany
| | - Josphat C Matasyoh
- Department of Chemistry, Faculty of Sciences, Egerton University, P.O. Box 536, 20115 Egerton, Kenya
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