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Loggenberg S, Twilley D, Lall N. Evaluating the effects of various ethanolic medicinal plant extracts on metastatic breast cancer proliferation, invasion, and expression of a novel potential drug target; CD82 metastatic suppressor protein, and on in vivo angiogenesis using the ex ovo yolk sac membrane (YSM) assay. J Cancer Res Clin Oncol 2024; 150:257. [PMID: 38753184 PMCID: PMC11098903 DOI: 10.1007/s00432-024-05751-0] [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: 01/18/2024] [Accepted: 04/15/2024] [Indexed: 05/19/2024]
Abstract
PURPOSE Breast cancer metastasis relies on cellular invasion and angiogenesis facilitated by the downregulation of metastatic suppressor proteins like Cluster of Differentiation 82 (CD82). Currently, no medicines target multiple systems to prevent metastatic progression through CD82 upregulation. This study screened for plant extracts displaying effects on cell proliferation, invasion, and CD82 expression in breast cancer cells, and in vivo angiogenesis, and further correlated between the biological activities and effect on CD82 expression. METHODS Seventeen ethanolic plant extracts were screened for their effect on cell proliferation (against MDA-MB-231 and MCF-7 breast cancer and Hek293 kidney cells), cell invasion and effect on CD82 expression in metastatic MDA-MB-231 cells. Selected extracts were further evaluated for in vivo anti-angiogenesis. RESULTS Extracts displayed varying antiproliferative activity against the different cell lines, and those that showed selectivity indexes (SI) > 0.5 against MDA-MB-231 were selected for anti-invasion evaluation. Buddleja saligna Willd. (BS), Combretum apiculatum Sond. (CA), Foeniculum vulgare, Greyia radlkoferi, Gunnera perpensa and Persicaria senegalensis (Meisn.) Soják (PS) displayed 50% inhibitory concentration (IC50) values of 44.46 ± 3.46, 74.00 ± 4.48, 180.43 ± 4.51, 96.97 ± 2.29, 55.29 ± 9.88 and 243.60 ± 2.69 µg/mL, respectively against MDA-MB-231, and compared to Hek293 showed SI of 0.9, 0.7, 1.4, 1.1, 2.2 and 0.5. Significant invasion inhibition was observed at both 20 and 40 µg/mL for BS (94.10 ± 0.74 and 96.73 ± 0.95%) and CA (87.42 ± 6.54 and 98.24 ± 0.63%), whereas GR (14.91 ± 1.62 and 41 ± 1.78%) and PS (36.58 ± 0.54 and 51.51 ± 0.83%), only showed significant inhibition at 40 µg/mL, and FV (< 5% inhibition) and GP (10 ± 1.03 and 22 ± 1.31%) did not show significant inhibition at both concentrations. Due to the significant anti-invasive activity of BS, CA and PS at 40 µg/mL, these extracts were further evaluated for their potential to stimulate CD82. BS showed significant (p < 0.05) reduction in CD82 at 20 and 40 µg/mL (13.2 ± 2.2% and 20.3 ± 1.5% decrease, respectively), whereas both CA and PS at 20 µg/mL increased (p < 0.05) CD82 expression (16.4 ± 0.8% and 5.4 ± 0.6% increase, respectively), and at 40 µg/mL significantly reduced CD82 expression (23.4 ± 3.1% and 11.2 ± 2.9% decrease, respectively). Using the yolk sac membrane assay, BS (59.52 ± 4.12 and 56.72 ± 3.13% newly formed vessels) and CA (83.33 ± 3.17 and 74.00 ± 2.12%) at both 20 and 40 µg/egg showed significant (p < 0.001) angiogenesis inhibition, with BS showing statistical similar activity to the positive control, combretastatin A4 (10 nmol/egg), whereas PS only displayed significant (p < 0.001) angiogenesis stimulation at 40 µg/egg (120.81 ± 3.34% newly formed vessels). CONCLUSION BS exhibits antiproliferative, anti-invasive, and anti-angiogenic activity despite inhibiting CD82, suggesting an alternative mode of action. CA at 20 µg/mL shows moderate anti-invasive and anti-angiogenic potential by stimulating CD82, while at 40 µg/mL it still displays these properties but inhibits CD82, suggesting an additional mode of action. PS, with the least antiproliferative activity, stimulates CD82 and inhibits angiogenesis at 20 µg/mL but inhibits CD82 and increases angiogenesis at 40 µg/mL, indicating CD82 targeting as a major mode of action. Future studies should explore breast cancer xenograft models to assess the extracts' impact on CD82 expression and angiogenesis in the tumor microenvironment, along with isolating bioactive compounds from the extracts.
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Affiliation(s)
- Samantha Loggenberg
- Department of Plant and Soil Sciences, University of Pretoria, Pretoria, 0002, South Africa
| | - Danielle Twilley
- Department of Plant and Soil Sciences, University of Pretoria, Pretoria, 0002, South Africa
| | - Namrita Lall
- Department of Plant and Soil Sciences, University of Pretoria, Pretoria, 0002, South Africa.
- School of Natural Resources, University of Missouri, Columbia, MO, 65211, USA.
- College of Pharmacy, JSS Academy of Higher Education and Research, Mysuru, Karnataka, 570015, India.
- Bio-Tech Research and Development Institute, University of the West Indies, Kingston, Jamaica.
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2
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Welsh A, Serala K, Prince S, Smith GS. Selective Targeting of Regulated Rhabdomyosarcoma Cells by Trinuclear Ruthenium(II)-Arene Complexes. J Med Chem 2024; 67:6673-6686. [PMID: 38569098 PMCID: PMC11056987 DOI: 10.1021/acs.jmedchem.4c00256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 03/14/2024] [Accepted: 03/20/2024] [Indexed: 04/05/2024]
Abstract
The use of benzimidazole-based trinuclear ruthenium(II)-arene complexes (1-3) to selectively target the rare cancer rhabdomyosarcoma is reported. Preliminary cytotoxic evaluations of the ruthenium complexes in an eight-cancer cell line panel revealed enhanced, selective cytotoxicity toward rhabdomyosarcoma cells (RMS). The trinuclear complex 1 was noted to show superior short- and long-term cytotoxicity in RMS cell lines and enhanced selectivity relative to cisplatin. Remarkably, 1 inhibits the migration of metastatic RMS cells and maintains superior activity in a 3D multicellular spheroid model in comparison to that of the clinically used cisplatin. Mechanistic insights reveal that 1 effectively induces genomic DNA damage, initiates autophagy, and prompts the intrinsic and extrinsic apoptotic pathways in RMS cells. To the best of our knowledge, 1 is the first trinuclear ruthenium(II) arene complex to selectively kill RMS cells in 2D and 3D cell cultures.
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Affiliation(s)
- Athi Welsh
- Department
of Chemistry, University of Cape Town, Rondebosch, Cape Town 7700, South Africa
| | - Karabo Serala
- Department
of Human Biology, Faculty of Health Science, University of Cape Town, Observatory, Cape Town 7935, South Africa
| | - Sharon Prince
- Department
of Human Biology, Faculty of Health Science, University of Cape Town, Observatory, Cape Town 7935, South Africa
| | - Gregory S. Smith
- Department
of Chemistry, University of Cape Town, Rondebosch, Cape Town 7700, South Africa
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Adico MDW, Bayala B, Bunay J, Baron S, Simpore J, Lobaccaro JMA. Contribution of Sub-Saharan African medicinal plants to cancer research: Scientific basis 2013-2023. Pharmacol Res 2024; 202:107138. [PMID: 38467241 DOI: 10.1016/j.phrs.2024.107138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 03/08/2024] [Accepted: 03/08/2024] [Indexed: 03/13/2024]
Abstract
Cancer incidence and mortality rates are increasing worldwide. Cancer treatment remains a real challenge for African countries, especially in sub-Saharan Africa where funding and resources are very limited. High costs, side effects and drug resistance associated with cancer treatment have encouraged scientists to invest in research into new herbal cancer drugs. In order to identify potential anticancer plants for drug development, this review aims to collect and summarize anticancer activities (in vitro/in vivo) and molecular mechanisms of sub-Saharan African medicinal plant extracts against cancer cell lines. Scientific databases such as ScienceDirect, Google Scholar and PubMed were used to search for research articles published from January 2013 to May 2023 on anticancer medicinal plants in sub-Saharan Africa. The data were analyzed to highlight the cytotoxicity and molecular mechanisms of action of these listed plants. A total of 85 research papers covering 204 medicinal plant species were selected for this review. These plants come from 57 families, the most dominant being the plants of the family Amaryllidaceae (16), Fabaceae (14), Annonaceae (10), Asteraceae (10). Plant extracts exert their anticancer activity mainly by inducing apoptosis and stopping the cell cycle of cancer cells. Several plant extracts from sub-Saharan Africa therefore have strong potential for the search for original anticancer phytochemicals. Chemoproteomics, multi-omics, genetic editing technology (CRISPR/Cas9), combined therapies and artificial intelligence tools are cutting edge emerging technologies that facilitate the discovery and structural understanding of anticancer molecules of medicinal plants, reveal their direct targets, explore their therapeutic uses and molecular bases.
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Affiliation(s)
- Marc D W Adico
- Laboratoire de Biologie Moléculaire et de Génétique (LABIOGENE), Département de Biochimie-Microbiologie, Université Joseph KI-ZERBO, 03 BP 7021, Ouagadougou 03, Burkina Faso; Centre de Recherche Biomoléculaire Pietro Annigoni (CERBA), 01 BP 216, Ouagadougou 01, Burkina Faso
| | - Bagora Bayala
- Laboratoire de Biologie Moléculaire et de Génétique (LABIOGENE), Département de Biochimie-Microbiologie, Université Joseph KI-ZERBO, 03 BP 7021, Ouagadougou 03, Burkina Faso; Centre de Recherche Biomoléculaire Pietro Annigoni (CERBA), 01 BP 216, Ouagadougou 01, Burkina Faso; Institut Génétique, Reproduction & Développement, UMR CNRS 6293, INSERM U1103, Université Clermont Auvergne, et Centre de Recherche en Nutrition Humaine Auvergne, 28, Place Henri Dunant, BP38, Clermont-Ferrand F63001, France; Ecole Normale Supérieure, BP 376, Koudougou, Burkina Faso.
| | - Julio Bunay
- Institut Génétique, Reproduction & Développement, UMR CNRS 6293, INSERM U1103, Université Clermont Auvergne, et Centre de Recherche en Nutrition Humaine Auvergne, 28, Place Henri Dunant, BP38, Clermont-Ferrand F63001, France
| | - Silvère Baron
- Institut Génétique, Reproduction & Développement, UMR CNRS 6293, INSERM U1103, Université Clermont Auvergne, et Centre de Recherche en Nutrition Humaine Auvergne, 28, Place Henri Dunant, BP38, Clermont-Ferrand F63001, France
| | - Jacques Simpore
- Laboratoire de Biologie Moléculaire et de Génétique (LABIOGENE), Département de Biochimie-Microbiologie, Université Joseph KI-ZERBO, 03 BP 7021, Ouagadougou 03, Burkina Faso; Centre de Recherche Biomoléculaire Pietro Annigoni (CERBA), 01 BP 216, Ouagadougou 01, Burkina Faso
| | - Jean-Marc A Lobaccaro
- Institut Génétique, Reproduction & Développement, UMR CNRS 6293, INSERM U1103, Université Clermont Auvergne, et Centre de Recherche en Nutrition Humaine Auvergne, 28, Place Henri Dunant, BP38, Clermont-Ferrand F63001, France.
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Gupta N, Kumar H, Gupta S, S M B, Saini K. A Concise Review on Natural Products and Their Derivatives for Breast Cancer Treatment. Chem Biodivers 2023; 20:e202300688. [PMID: 37431959 DOI: 10.1002/cbdv.202300688] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 07/10/2023] [Accepted: 07/11/2023] [Indexed: 07/12/2023]
Abstract
Cancer is a leading cause of death worldwide. Among other cancers, breast cancer has been found to produce maximum number of cases in 2020. Different factors including geographical, genetic, hormonal, oral contraceptives and modern lifestyle could be responsible for the development of breast cancer and different pathways can be targeted for breast cancer treatment. The various conventional approaches used for the treatment of breast cancer including radiotherapy, chemotherapy, hormone and immunotherapy. But due to the side effects associated with these conventional treatments such as non-selectivity, multidrug resistance and bioavailability, there is a need for the development of better therapeutic agents for breast cancer treatment. Several natural products have been explored for breast cancer treatment. However, many of these natural products suffered from the limitations of poor water solubility and possess toxic side effects. To overcome these limitations, several structural analogs of natural products have been synthesized and possess potent anti-breast cancer effects with less side effects over their precursor molecules. In the present manuscript, we describe the pathogenesis of breast cancer, some potent natural products used in the treatment of breast cancer and their selected structural analogs possessing potent anti-breast cancer effects. Database such as Science direct, Pubmed and Google scholar were searched using keywords 'risk factors', 'screening methods','receptors', and 'natural products and derivatives', Registered clinical trials on selected natural products were also analyzed. Present study concludes that eight selected natural products and their derivatives possess wide potential to exhibit anti-breast cancer effects and could be explored further to develop better chemotherapeutic agents against breast cancer.
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Affiliation(s)
- Nidhi Gupta
- M. M. College of Pharmacy, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, Haryana, India, 133207
| | - Hitesh Kumar
- M. M. College of Pharmacy, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, Haryana, India, 133207
| | - Sumeet Gupta
- M. M. College of Pharmacy, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, Haryana, India, 133207
| | - Basavarajaiah S M
- PG Department of Chemistry, Vijaya College, RV Road, Bengaluru, 560004
| | - Kamal Saini
- M. M. College of Pharmacy, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, Haryana, India, 133207
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Thilagavathi R, Priyankha S, Kannan M, Prakash M, Selvam C. Compounds from diverse natural origin against triple-negative breast cancer: A comprehensive review. Chem Biol Drug Des 2023; 101:218-243. [PMID: 36323650 DOI: 10.1111/cbdd.14172] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 10/25/2022] [Accepted: 10/29/2022] [Indexed: 11/05/2022]
Abstract
Triple-negative breast cancer (TNBC) is caused due to the lack of estrogen receptors (ER), progesterone receptors (PR), and human epidermal growth factor 2 (HER2) expression. Triple-negative breast cancer is the most aggressive heterogeneous disease that is capable of producing different clones and mutations. Tumorigenesis in TNBC is caused due to the mutation or overexpression of tumor suppressor genes. It is also associated with mutations in the BRCA gene which is linked to hereditary breast cancer. In addition, PARP proteins and checkpoint proteins also play a crucial function in causing TNBC. Many cell signaling pathways are dysregulated in TNBC. Even though chemotherapy and immunotherapy are good options for TNBC treatment, the response rates are still low in general. Many phytochemicals that are derived from natural compounds have shown very good inhibitions for TNBC. Natural compounds have the great advantage of being less toxic, having lesser side effects, and being easily available. The secondary metabolites such as alkaloids, terpenoids, steroids, and flavonoids in natural products make them promising inhibitors of TNBC. Their compositions also offer vital insights into inhibitory action, which could lead to new cancer-fighting strategies. This review can help in understanding how naturally occurring substances and medicinal herbs decrease specific tumors and pave the way for the development of novel and extremely efficient antitumor therapies.
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Affiliation(s)
- Ramasamy Thilagavathi
- Department of Biotechnology, Faculty of Engineering, Karpagam Academy of Higher Education, Coimbatore, India
| | - Sridhar Priyankha
- Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Chengalpattu, India
| | - Manivel Kannan
- Faculty of Pharmacy, Karpagam Academy of Higher Education, Coimbatore, India
| | - Muthuramalingam Prakash
- Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Chengalpattu, India
| | - Chelliah Selvam
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, Texas Southern University, Houston, Texas, USA
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6
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Saqib S, Ullah F, Naeem M, Younas M, Ayaz A, Ali S, Zaman W. Mentha: Nutritional and Health Attributes to Treat Various Ailments Including Cardiovascular Diseases. Molecules 2022; 27:molecules27196728. [PMID: 36235263 PMCID: PMC9572119 DOI: 10.3390/molecules27196728] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 10/03/2022] [Accepted: 10/06/2022] [Indexed: 11/16/2022] Open
Abstract
A poor diet, resulting in malnutrition, is a critical challenge that leads to a variety of metabolic disorders, including obesity, diabetes, and cardiovascular diseases. Mentha species are famous as therapeutic herbs and have long served as herbal medicine. Recently, the demand for its products, such as herbal drugs, medicines, and natural herbal formulations, has increased significantly. However, the available literature lacks a thorough overview of Mentha phytochemicals' effects for reducing malnutritional risks against cardiovascular diseases. In this context, we aimed to review the recent advances of Mentha phytochemicals and future challenges for reducing malnutritional risks in cardiovascular patients. Current studies indicated that Mentha species phytochemicals possess unique antimicrobial, antidiabetic, cytotoxic, and antioxidant potential, which can be used as herbal medicine directly or indirectly (such as food ingredients) and are effective in controlling and curing cardiovascular diseases. The presence of aromatic and flavor compounds of Mentha species greatly enhance the nutritional values of the food. Further interdisciplinary investigations are pivotal to explore main volatile compounds, synergistic actions of phytochemicals, organoleptic effects, and stability of Mentha sp. phytochemicals.
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Affiliation(s)
- Saddam Saqib
- Department of Biotechnology, Mohi-ud-Din Islamic University, Nerian Sharif 12080, AJ&K, Pakistan
| | - Fazal Ullah
- State Key Laboratory of Grassland Agro-Ecosystems, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Muhammad Naeem
- China Sinovita Bioengineering Group, Jinan 250000, China
| | - Muhammad Younas
- Department of Biotechnology, Mohi-ud-Din Islamic University, Nerian Sharif 12080, AJ&K, Pakistan
| | - Asma Ayaz
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Sajid Ali
- Department of Horticulture and Life Science, Yeungnam University, Gyeongsan 38541, Korea
- Correspondence: (S.A.); (W.Z.)
| | - Wajid Zaman
- Department of Life Sciences, Yeungnam University, Gyeongsan 38541, Korea
- Correspondence: (S.A.); (W.Z.)
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Laser empowered ‘chemo-free’ phytotherapy: Newer approach in anticancer therapeutics delivery. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Sangweni NF, van Vuuren D, Mabasa L, Gabuza K, Huisamen B, Naidoo S, Barry R, Johnson R. Prevention of Anthracycline-Induced Cardiotoxicity: The Good and Bad of Current and Alternative Therapies. Front Cardiovasc Med 2022; 9:907266. [PMID: 35811736 PMCID: PMC9257015 DOI: 10.3389/fcvm.2022.907266] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 05/26/2022] [Indexed: 12/20/2022] Open
Abstract
Doxorubicin (Dox)-induced cardiotoxicity (DIC) remains a serious health burden, especially in developing countries. Unfortunately, the high cost of current preventative strategies has marginalized numerous cancer patients because of socio-economic factors. In addition, the efficacy of these strategies, without reducing the chemotherapeutic properties of Dox, is frequently questioned. These limitations have widened the gap and necessity for alternative medicines, like flavonoids, to be investigated. However, new therapeutics may also present their own shortcomings, ruling out the idea of “natural is safe”. The U.S. Food and Drug Administration (FDA) has stipulated that the concept of drug-safety be considered in all pre-clinical and clinical studies, to explore the pharmacokinetics and potential interactions of the drugs being investigated. As such our studies on flavonoids, as cardio-protectants against DIC, have been centered around cardiac and cancer models, to ensure that the efficacy of Dox is preserved. Our findings thus far suggest that flavonoids of Galenia africana could be suitable candidates for the prevention of DIC. However, this still requires further investigation, which would focus on drug-interactions as well as in vivo experimental models to determine the extent of cardioprotection.
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Affiliation(s)
- Nonhlakanipho F Sangweni
- Biomedical Research and Innovation Platform, South African Medical Research Council, Cape Town, South Africa.,Division of Medical Physiology, Faculty of Medicine and Health Sciences, Centre for Cardio-metabolic Research in Africa, Stellenbosch University, Stellenbosch, South Africa
| | - Derick van Vuuren
- Division of Medical Physiology, Faculty of Medicine and Health Sciences, Centre for Cardio-metabolic Research in Africa, Stellenbosch University, Stellenbosch, South Africa
| | - Lawrence Mabasa
- Biomedical Research and Innovation Platform, South African Medical Research Council, Cape Town, South Africa
| | - Kwazi Gabuza
- Biomedical Research and Innovation Platform, South African Medical Research Council, Cape Town, South Africa
| | - Barbara Huisamen
- Division of Medical Physiology, Faculty of Medicine and Health Sciences, Centre for Cardio-metabolic Research in Africa, Stellenbosch University, Stellenbosch, South Africa
| | - Sharnay Naidoo
- Biomedical Research and Innovation Platform, South African Medical Research Council, Cape Town, South Africa.,Division of Medical Physiology, Faculty of Medicine and Health Sciences, Centre for Cardio-metabolic Research in Africa, Stellenbosch University, Stellenbosch, South Africa
| | - Reenen Barry
- Research and Development Department, BioPharm, Hamilton, New Zealand
| | - Rabia Johnson
- Biomedical Research and Innovation Platform, South African Medical Research Council, Cape Town, South Africa.,Division of Medical Physiology, Faculty of Medicine and Health Sciences, Centre for Cardio-metabolic Research in Africa, Stellenbosch University, Stellenbosch, South Africa
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9
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Serala K, Steenkamp P, Mampuru L, Prince S, Poopedi K, Mbazima V. In vitro antimetastatic activity of Momordica balsamina crude acetone extract in HT-29 human colon cancer cells. ENVIRONMENTAL TOXICOLOGY 2021; 36:2196-2205. [PMID: 34272816 DOI: 10.1002/tox.23333] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 06/19/2021] [Accepted: 07/07/2021] [Indexed: 06/13/2023]
Abstract
Plant-derived compounds and/or extracts have proven to be beneficial for the treatment of a broad spectrum of cancers with minimal side effects. In this study, we investigated whether a crude acetone extract of Momordica balsamina (MBE) can interfere with the metastatic ability of HT-29 colorectal cancer (CRC) cells. The phytochemical composition of MBE was determined by ultra-performance liquid chromatography and cytotoxic effects by the MTT and acridine orange/ethidium bromide staining assays. The effect of MBE on the formation of reactive oxygen species was assessed using the DCFH2 -DA assay. Wound healing assay, transwell cell invasion assay, cell adhesion assay, and the extracellular matrix-cell adhesion array were used to assess the antimetastatic effects of MBE. The effect of MBE on the expression of TNF-α, NF-κB, TIMP-3, MMP-2, and MMP-9 was assessed by western blot analysis. Our results showed that MBE consists of a mixture of compounds without a known anticancer activity in CRC and exhibits cytotoxicity against HT-29 cells. MBE also suppressed reactive oxygen species formation, cell invasion, cell migration, and cell adhesion. The reduction of cell invasion was associated with the downregulation of TNF-α, NF-κB, MMP2, and MMP9 and upregulation of TIMP-3 proteins. We concluded that MBE inhibits the metastatic ability of HT-29 CRC cells in vitro.
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Affiliation(s)
- Karabo Serala
- Department of Biochemistry, Microbiology and Biotechnology, University of Limpopo, Sovenga, South Africa
| | - Paul Steenkamp
- Centre for Plant Metabolomics Research, Department of Biochemistry, Faculty of Science, University of Johannesburg, Auckland Park, South Africa
| | - Leseilane Mampuru
- Department of Biochemistry, Microbiology and Biotechnology, University of Limpopo, Sovenga, South Africa
| | - Sharon Prince
- Division of Cell Biology, Department of Human Biology, University of Cape Town, Cape Town, South Africa
| | - Kgomotso Poopedi
- Department of Biochemistry, Microbiology and Biotechnology, University of Limpopo, Sovenga, South Africa
| | - Vusi Mbazima
- Department of Biochemistry, Microbiology and Biotechnology, University of Limpopo, Sovenga, South Africa
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In Vitro Anticancer Activity and Oxidative Stress Biomarkers Status Determined by Usnea barbata (L.) F.H. Wigg. Dry Extracts. Antioxidants (Basel) 2021; 10:antiox10071141. [PMID: 34356377 PMCID: PMC8301184 DOI: 10.3390/antiox10071141] [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: 06/29/2021] [Revised: 07/12/2021] [Accepted: 07/16/2021] [Indexed: 12/22/2022] Open
Abstract
Lichens represent an important resource for common traditional medicines due to their numerous metabolites that can exert diverse pharmacological activities including anticancer effects. To find new anticancer compounds with fewer side effects and low tumor resistance, a bioprospective study of Usnea barbata (L.) F.H. Wigg. (U. barbata), a lichen from the Călimani Mountains (Suceava county, Romania) was performed. The aim of this research was to investigate the anticancer potential, morphologic changes, wound healing property, clonogenesis, and oxidative stress biomarker status of four extracts of U. barbata in different solvents (methanol, ethanol, acetone, and ethyl acetate), and also of usnic acid (UA) as a positive control on the CAL-27 (ATCC® CRL-2095™) oral squamous carcinoma (OSCC) cell line and V79 (ATCC® CCL-93™) lung fibroblasts as normal cells. Using the MTT assay and according to IC50 values, it was found that the most potent anticancer property was displayed by acetone and ethyl acetate extracts. All U. barbata extracts determined morphological modifications (losing adhesion capacity, membrane shrinkage, formation of abnormal cellular wrinkles, and vacuolization) with higher intensity in tumor cells than in normal ones. The most intense anti-migration effect was established in the acetone extract treatment. The clonogenic assay showed that some U. barbata extracts decreased the ability of cancer cells to form colonies compared to untreated cells, suggesting a potential anti-tumorigenic property of the tested extracts. Therefore, all the U. barbata extracts manifest anticancer activity of different intensity, based, at least partially, on an imbalance in antioxidant defense mechanisms, causing oxidative stress.
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Kimani S, Chakraborty S, Irene I, de la Mare J, Edkins A, du Toit A, Loos B, Blanckenberg A, Van Niekerk A, Costa-Lotufo LV, ArulJothi KN, Mapolie S, Prince S. The palladacycle, BTC2, exhibits anti-breast cancer and breast cancer stem cell activity. Biochem Pharmacol 2021; 190:114598. [PMID: 33979647 DOI: 10.1016/j.bcp.2021.114598] [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: 03/17/2021] [Revised: 05/01/2021] [Accepted: 05/06/2021] [Indexed: 11/15/2022]
Abstract
In women globally, breast cancer is responsible for most cancer-related deaths and thus, new effective therapeutic strategies are required to treat this malignancy. Platinum-based compounds like cisplatin are widely used to treat breast cancer, however, they come with limitations such as poor solubility, adverse effects, and drug resistance. To overcome these limitations, complexes containing other platinum group metals such as palladium have been studied and some have already entered clinical trials. Here we investigated the anti-cancer activity of a palladium complex, BTC2, in MCF-7 oestrogen receptor positive (ER+) and MDA-MB-231 triple negative (TN) human breast cancer cells as well as in a human breast cancer xenograft chick embryo model. BTC2 exhibited an average IC50 value of 0.54 μM, a desirable selectivity index of >2, inhibited the migration of ER+ and TN breast cancer cells, and displayed anti-cancer stem cell activity. We demonstrate that BTC2 induced DNA double strand breaks (increased levels of γ-H2AX) and activated the p-ATM/p-CHK2 and p-p38/MAPK pathways resulting in S- and G2/M-phase cell cycle arrests. Importantly, BTC2 sensitised breast cancer cells by triggering the intrinsic (cleaved caspase 9) and extrinsic (cleaved caspase 8) apoptotic as well as necroptotic (p-RIP3 and p-MLKL) cell death pathways and inhibiting autophagy and its pro-survival role. Furthermore, in the xenograft in vivo model, BTC2 displayed limited toxicity and arrested the tumour growth of breast cancer cells over a 9-day period in a manner comparable to that of the positive control drug, paclitaxel. BTC2 thus displayed promising anti-breast cancer activity.
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Affiliation(s)
- Serah Kimani
- Division of Cell Biology, Department of Human Biology, Faculty of Health Sciences, University of Cape Town, Cape Town, Western Cape, South Africa
| | - Suparna Chakraborty
- Division of Cell Biology, Department of Human Biology, Faculty of Health Sciences, University of Cape Town, Cape Town, Western Cape, South Africa
| | - Ikponmwosa Irene
- Division of Cell Biology, Department of Human Biology, Faculty of Health Sciences, University of Cape Town, Cape Town, Western Cape, South Africa
| | - Jo de la Mare
- Biomedical Biotechnology Research Unit, Department of Biochemistry, Microbiology and Biotechnology, Rhodes University, Grahamstown, South Africa
| | - Adrienne Edkins
- Biomedical Biotechnology Research Unit, Department of Biochemistry, Microbiology and Biotechnology, Rhodes University, Grahamstown, South Africa
| | - André du Toit
- Department of Physiological Sciences, Stellenbosch University, Stellenbosch, Western Cape, South Africa
| | - Ben Loos
- Department of Physiological Sciences, Stellenbosch University, Stellenbosch, Western Cape, South Africa
| | - Angelique Blanckenberg
- Department of Chemistry and Polymer Science, Stellenbosch University, Stellenbosch, Western Cape, South Africa
| | - Annick Van Niekerk
- Department of Chemistry and Polymer Science, Stellenbosch University, Stellenbosch, Western Cape, South Africa
| | - Leticia V Costa-Lotufo
- Department of Pharmacology, Institute of Biomedical Science, University of São Paulo, São Paulo, Brazil
| | - K N ArulJothi
- Division of Cell Biology, Department of Human Biology, Faculty of Health Sciences, University of Cape Town, Cape Town, Western Cape, South Africa; Department of Genetic Engineering, SRM Institute of Science and Technology, Chennai, India
| | - Selwyn Mapolie
- Department of Chemistry and Polymer Science, Stellenbosch University, Stellenbosch, Western Cape, South Africa
| | - Sharon Prince
- Division of Cell Biology, Department of Human Biology, Faculty of Health Sciences, University of Cape Town, Cape Town, Western Cape, South Africa.
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In Vitro Comparison of the Anti-Proliferative Effects of Galenia africana on Human Skin Cell Lines. Sci Pharm 2021. [DOI: 10.3390/scipharm89010012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Malignant melanoma is the major cause of skin cancer-related deaths. Surgery in combination with radiotherapy, immunotherapy or chemotherapy is used to eradicate cancer cells, however, this treatment option is limited by the tolerance of the surrounding healthy tissue. The extracts from Galenia africana have been shown to possess anti-cancer flavonoid compounds and can be a safer and cost-effective alternative treatment. The study aimed to compare the anti-proliferative effects of G. africana on human skin cells (HaCaT) and human malignant melanoma cells (A375). The cells were exposed to various concentrations of the G. africana extract at different times. In vitro assays were employed to determine cell viability and cytotoxicity. Hoechst 33342 staining was performed to observe the nuclear changes, including apoptosis. G. africana significantly reduced the cell viability of the A375 cells in a dose and time-dependent manner, while having no effect on the HaCaT cells. The A375 cells displayed nuclear condensation, brightly stained nuclei and nuclear fragmentation indicative of apoptosis. This suggests a clinical rationale for the use of G. africana as a potential anti-melanoma agent offering efficacy and low toxicity. This study provides new insights for future work on investigating the utilization of G. africana in malignant melanoma treatment.
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13
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Solvent fractions of selected Ethiopian medicinal plants used in traditional breast cancer treatment inhibit cancer stem cells in a breast cancer cell line. BMC Complement Med Ther 2020; 20:366. [PMID: 33238963 PMCID: PMC7687706 DOI: 10.1186/s12906-020-03154-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 11/10/2020] [Indexed: 12/26/2022] Open
Abstract
Background The incidence and mortality of breast cancer in women is increasing worldwide. Breast cancer contains a subpopulation of cells known as cancer stem cells (CSCs). The CSCs are believed to be responsible for chemotherapeutic resistance and are also involved in tumor initiation, progression, evolution, and metastasis to distant sites. The present study aimed to investigate the anti-CSC potential of selected Ethiopian medicinal plants traditionally used for breast cancer treatment. Methods The solvent fractions of three medicinal plants (the ethyl acetate fraction of Vernonia leopoldi, the aqueous fraction of Sideroxylon oxyacanthum, and the chloroform fraction of Clematis simensis) resulting from the methanolic crude extracts were selected based on their previously demonstrated cytotoxic effects on breast cancer cell lines. The effect of these solvent fractions on the status of the cancer stem cell subpopulation of the JIMT-1 cell line was assessed by flow cytometric evaluation of the proportion of aldehyde dehydrogenase positive cells and by measuring colony forming efficiency in a serum-free soft agar assay after treatment. Effects on cell migration using a wound healing assay and on tumor necrosis factor-α-induced translocation of nuclear factor-kappa B to the cell nucleus were also investigated. Results The solvent fractions showed a dose-dependent reduction in the aldehyde dehydrogenase positive subpopulation of JIMT-1 cells. The chloroform fraction of C. simensis (80 μg/mL) completely blocked colony formation of JIMT-1 cells. The wound healing assay showed that all fractions significantly reduced cell migration. The ethyl acetate fraction of V. leopoldi (0.87 μg/mL) significantly inhibited tumor necrosis factor-α-induced nuclear factor-kappa B translocation to the nucleus. Conclusion The solvent fractions of the medicinal plants showed desirable activities against breast cancer stem cells in the JIMT-1 cell line, which warrants further studies.
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