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Jinga P, Manyangadze T. Variable intraspecific response to climate change in a medicinally important African tree species, Vachellia sieberiana (DC.) (paperbark thorn). Ecol Evol 2024; 14:e11314. [PMID: 38694755 PMCID: PMC11056962 DOI: 10.1002/ece3.11314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 01/24/2024] [Accepted: 04/09/2024] [Indexed: 05/04/2024] Open
Abstract
Climate change is predicted to disproportionately impact sub-Saharan Africa, with potential devastating consequences on plant populations. Climate change may, however, impact intraspecific taxa differently. The aim of the study was to determine the current distribution and impact of climate change on three varieties of Vachellia sieberiana, that is, var. sieberiana, var. villosa and var. woodii. Ensemble species distribution models (SDMs) were built in "biomod2" using 66, 45, and 137 occurrence records for var. sieberiana, var. villosa, and var. woodii, respectively. The ensemble SDMs were projected to 2041-2060 and 2081-2100 under three general circulation models (GCMs) and two shared socioeconomic pathways (SSPs). The three GCMs were the Canadian Earth System Model version 5, the Institut Pierre-Simon Laplace Climate Model version 6A Low Resolution, and the Model for Interdisciplinary Research on Climate version 6. The suitable habitat of var. sieberiana predominantly occurs in the Sudanian and Zambezian phytochoria while that of var. villosa largely occurs in the Sudanian phytochorion. The suitable habitat of var. woodii mainly occurs in the Zambezian phyotochorion. There is coexistence of var. villosa and var. sieberiana in the Sudanian phytochorion while var. sieberiana and var. woodii coexist in the Zambezian phytochorion. Under SSP2-4.5 in 2041-2060 and averaged across the three GCMs, the suitable habitat expanded by 33.8% and 119.7% for var. sieberiana and var. villosa, respectively. In contrast, the suitable habitat of var. woodii contracted by -8.4%. Similar trends were observed in 2041-2060 under SSP5-8.5 [var. sieberiana (38.6%), var. villosa (139.0%), and var. woodii (-10.4%)], in 2081-2100 under SSP2-4.5 [var. sieberiana (4.6%), var. villosa (153.4%), and var. woodii (-14.4%)], and in 2081-2100 under SSP5-8.5 [var. sieberiana (49.3%), var. villosa (233.4%), and var. woodii (-30.7%)]. Different responses to climate change call for unique management and conservation decisions for the varieties.
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Affiliation(s)
- Percy Jinga
- Biological Sciences DepartmentBindura University of Science EducationBinduraZimbabwe
| | - Tawanda Manyangadze
- Geosciences DepartmentBindura University of Science EducationBinduraZimbabwe
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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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Maroyi A. Medicinal Uses of the Fabaceae Family in Zimbabwe: A Review. PLANTS (BASEL, SWITZERLAND) 2023; 12:1255. [PMID: 36986943 PMCID: PMC10051751 DOI: 10.3390/plants12061255] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 03/07/2023] [Accepted: 03/09/2023] [Indexed: 06/18/2023]
Abstract
The current study is aimed at providing a systematic review of the ethnomedicinal, phytochemical and pharmacological properties of Fabaceae species used as sources of traditional medicinies in Zimbabwe. Fabaceae is one of the well-known plant families of ethnopharmacological importance. Of the approximately 665 species of the Fabaceae family occurring in Zimbabwe, about 101 are used for medicinal purposes. Many communities in the country, mainly in peri-urban, rural and marginalized areas with limited access to healthcare facilities, rely on traditional medicines as their primary healthcare. The study reviewed research studies undertaken on Zimbabwe's Fabaceae species during 1959 to 2022. Information was gathered from literature sourced from Google Scholar, Science Direct, Scopus, PubMed, books, dissertations, theses and scientific reports. This study showed that 101 species are traditionally used to manage human and animal diseases in Zimbabwe. The genera with the highest number of medicinal uses are Indigofera, Senna, Albizia, Rhynchosia and Vachellia. Species of these genera are used as traditional medicines against 134 medical conditions, mainly gastrointestinal conditions, female reproductive conditions, respiratory conditions and sexually transmitted infections. Shrubs (39.0%), trees (37.0%) and herbs (18.0%) are the primary sources of traditional medicines, while roots (80.2%), leaves (36.6%), bark (27.7%) and fruits (8.9%) are the most widely used plant parts. Many of Zimbabwe's Fabaceae species used as sources of traditional medicines have been assessed for their phytochemical and pharmacological properties, corroborating their medicinal uses. However, there is a need to unravel the therapeutic potential of the family through further ethnopharmacological research focusing on toxicological studies, in vitro and in vivo models, biochemical assays and pharmacokinetic studies.
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Affiliation(s)
- Alfred Maroyi
- Department of Botany, University of Fort Hare, Private Bag X1314, Alice 5700, South Africa
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Lin CL, Yu CI, Lee TH, Chuang JMJ, Han KF, Lin CS, Huang WP, Chen JYF, Chen CY, Lin MY, Lee CH. Plumbagin induces the apoptosis of drug-resistant oral cancer in vitro and in vivo through ROS-mediated endoplasmic reticulum stress and mitochondrial dysfunction. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2023; 111:154655. [PMID: 36689858 DOI: 10.1016/j.phymed.2023.154655] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 12/15/2022] [Accepted: 01/06/2023] [Indexed: 06/17/2023]
Abstract
BACKGROUND Oral cancer is one of the leading causes of cancer-related deaths worldwide. Chemotherapy is widely used in the treatment of oral cancer, but its clinical efficacy is limited by drug resistance. Hence, novel compounds capable of overcoming drug-resistance are urgently needed. PURPOSE Plumbagin (PG), a natural compound isolated from Plumbago zeylanica L, has been used to treat various cancers. In this study, we investigated the anticancer effects of PG on drug-resistant oral cancer (CR-SAS) cells, as well as the underlying mechanism. METHODS MTT assays were used to evaluate the effect of PG on the viability of CR-SAS cells. Apoptosis and reactive oxygen species (ROS) production by the cells were determined using flow cytometry. Protein expression levels were detected by western blotting. RESULTS The results show that PG reduces the viability and causes the apoptosis of CR-SAS cells. PG is able to induce intracellular and mitochondrial ROS generation that leads to mitochondrial dysfunction. Furthermore, endoplasmic reticulum (ER) stress was triggered in PG-treated CR-SAS cells. The inhibition of ROS using N-acetylcysteine (NAC) abrogated the PG-induced ER stress and apoptosis, as well as the reduction in cell viability. Meanwhile, similar results were observed both in zebrafish and in murine models of drug-resistant oral cancer. CONCLUSION Our results indicate that PG induces the apoptosis of CR-SAS cells via the ROS-mediated ER stress pathway and mitochondrial dysfunction. It will be interesting to develop the natural compound PG for the treatment of drug-resistant oral cancer.
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Affiliation(s)
- Chien-Liang Lin
- Department of Nursing, School of Nursing, Fooyin University, Kaohsiung 831301, Taiwan; Department of Radiation Oncology, Yuan's General Hospital, Kaohsiung 802635, Taiwan
| | - Chung-I Yu
- Department of Orthopedics, Department of Surgery, Chi Mei Medical Center, Liouying, Tainan 736402, Taiwan
| | - Tzong-Huei Lee
- Institute of Fisheries Science, National Taiwan University, Taipei 106319, Taiwan
| | - Jimmy Ming-Jung Chuang
- Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 833401, Taiwan
| | - Kuang-Fen Han
- Department of Nursing, Min-Hwei Junior College of Health Care Management, Tainan 736302, Taiwan
| | - Chang-Shen Lin
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807378, Taiwan; Department of Biological Sciences, National Sun Yat-sen University, Kaohsiung 804201, Taiwan
| | - Wan-Ping Huang
- Department of Medical Research, Kaohsiung Medical University, Kaohsiung 807378, Taiwan
| | - Jeff Yi-Fu Chen
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung 807378, Taiwan
| | - Chung-Yi Chen
- Department of Nutrition and Health Science, School of Medical and Health Sciences, Fooyin University, Kaohsiung 831301, Taiwan
| | - Mei-Ying Lin
- Community Health Promotion Center, Kaohsiung Municipal Ci-Jin Hospital, Kaohsiung 805004, Taiwan
| | - Chien-Hsing Lee
- Department of Pharmacology, School of Post-Baccalaureate Medicine, College of Medicine, Kaohsiung Medical University; Department of Medical Research, Kaohsiung Medical University Chung-Ho Memorial Hospital, Kaohsiung 807378, Taiwan; Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 807378, Taiwan; Department of Biological Science and Technology, National Pingtung University of Science and Technology, Pingtung 912301, Taiwan.
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Alain KY, Tamfu AN, Kucukaydin S, Ceylan O, Cokou Pascal AD, Félicien A, Koko Dominique SC, Duru ME, Dinica RM. Phenolic profiles, antioxidant, antiquorum sensing, antibiofilm and enzyme inhibitory activities of selected Acacia species collected from Benin. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.114162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Watafua M, Ejiofor JI, Musa A, Ahmad MH. Acacia sieberiana (Fabaceae) attenuates paracetamol and Bile Duct Ligation-Induced hepatotoxicity via modulation of biochemical and oxidative stress biomarkers. Front Pharmacol 2022; 13:959661. [PMID: 36059962 PMCID: PMC9437914 DOI: 10.3389/fphar.2022.959661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 06/29/2022] [Indexed: 11/13/2022] Open
Abstract
Background: The plant Acacia sieberiana (Fabaceae) is traditionally used to manage hepatitis. This research work aims to investigate the hepatoprotective effectiveness of root bark extract of Acacia sieberiana (ASE) against paracetamol (PCM) and bile duct ligation (BDL)-induced hepatotoxicity. The phytochemical and median lethal dose (LD50) investigations were conducted. The rats were pre-treated with the ASE (250, 750, and 1,500 mg/kg) once daily via oral route for 7 consecutive days. On the 8th day, liver injury was initiated by PCM administration (2 g/kg). Similarly, in the BDL-induced liver injury, the animals were administered ASE (125, 250, and 380 mg/kg) intraperitoneally for 7 consecutive days. After 24 h, blood samples and hepatic tissues were obtained for biochemical and histopathological investigations. Results: Phytocomponents determination revealed glycosides, triterpenes, glycosides, saponins, tannins, flavonoids and alkaloids. The oral and intraperitoneal LD50 values of the ASE were >5,000 and 1,300 mg/kg, respectively. The ASE efficiently (p < 0.05) decreased the alanine transaminase (ALT) and aspartate transaminase (AST) levels and elevated the albumin and total protein (TP) levels. The direct bilirubin effectively (p < 0.05) decreased at 750 mg/kg. Besides, the extract efficiently elevated the glutathione peroxidase (GPx), superoxide dismutase (SOD), and catalase (CAT) in relation to the PCM hepatotoxic group. Also, the malondialdehyde (MDA) concentration was reduced by the ASE. Meanwhile, in the BDL-induced liver injury, the ASE remarkably (p < 0.05) declined the AST, ALP, bilirubin,and MDA. Besides, there was effective (p < 0.05) elevation in SOD, GPx and CAT in the ASE-treated groups. The morphology of liver tissue was preserved at 125 and 250 mg/kg ASE groups from BDL-induced necrosis and vascular congestion. Conclusion: The study shows that the ASE has hepatoprotective actions against liver damage by possible modulation of biochemical and oxidative stress biomarkers.
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Affiliation(s)
- Miriam Watafua
- Department of Biochemistry, Faculty of Science, University of Maiduguri, Maiduguri, NG, Nigeria
- Department of Pharmacology and Therapeutics, Ahmadu Bello University, Zaria, KD, Nigeria
| | - Jane I. Ejiofor
- Department of Pharmacology and Therapeutics, Ahmadu Bello University, Zaria, KD, Nigeria
| | - Aminu Musa
- Department of Pharmacology and Therapeutics, Ahmadu Bello University, Zaria, KD, Nigeria
| | - Mubarak Hussaini Ahmad
- Department of Pharmacology and Therapeutics, Ahmadu Bello University, Zaria, KD, Nigeria
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Zheleva-Dimitrova D, Sinan KI, Etienne OK, Ak G, Sharmeen JB, Dervisoglu G, Ozdemir FA, Mahomoodally MF, Zengin G. Comprehensive chemical characterization and biological evaluation of two Acacia species: A. nilotica and A. ataxacantha. Food Chem Toxicol 2021; 156:112446. [PMID: 34339749 DOI: 10.1016/j.fct.2021.112446] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 07/18/2021] [Accepted: 07/29/2021] [Indexed: 12/20/2022]
Abstract
The genus Acacia (Family Leguminosae) is composed of several medicinal plants used for treating miscellaneous diseases. Amid the important members of this genus, A. nilotica and A. ataxacantha are widely employed for their tremendous healing properties. Hence, this present work aimed to determine the total phenolic and flavonoid contents and investigate the antioxidant, antiproliferative, anti-enzyme and antimicrobial potentials of methanolic and water extracts of leaves and stem bark of A. nilotica and A. ataxacantha obtained by maceration and ultrasonication. The total phenolic and flavonoid contents were obtained in the range of 33.35-116.60 mg GAE/g and 0.26-49.90 mg RE/g, respectively, with the methanolic leaf extracts of both species showing the highest contents. Moreover, the methanolic extracts were observed to display higher antioxidant potentials in almost all antioxidant assays performed compared to the water extracts (ABTS: 52.66-943.81 mg TE/g, DPPH: 8.51-493.90 mg TE/g, CUPRAC: 106.39-1193.75 mg TE/g; FRAP: 31.38-416.21 mg TE/g, and phosphomolybdenum: 0.90-4.17 mM TE/g). However, the water extracts were seen to be better metal chelators than the methanolic extracts (8.47-36.85 mg EDTAE/g). Additionally, all extracts were found to exhibit anti-tyrosinase (30.79-74.80 mg KAE/g) and anti-amylase (0.10-1.10 mM ACAE/g) properties. With the exception of a few extracts, glucosidase and acetylcholinesterase inhibitions (1.69-2.12 mg ACAE/g and 0.42-2.61 mg GALAE/g, respectively) were also demonstrated. While the methanolic extracts of both species showed antimicrobial potency against all the 18 tested microorganisms (gram positive, gram negative, and fungi), the water extracts were effective only against the gram positive bacteria. The extracts were also found to exhibit antiproliferative effects on SH-SY5Y human neuroblastoma cells, with the methanolic extracts showing higher cytotoxic potential than the water extracts. Therefore, this study showed these species to be good sources of antioxidants, enzyme inhibitors, antimicrobials and antiproliferative agents, which could be of great interest for their applications as natural bioactive ingredients in the development of pharmaceuticals and nutraceuticals.
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Affiliation(s)
| | - Kouadio Ibrahime Sinan
- Biochemistry and Physiology Research Laboratory, Department of Biology, Science Faculty, Selcuk University Campus, Konya, Turkey
| | - Ouattara Katinan Etienne
- Department of Health Sciences, Faculty of Medicine and Health Sciences, University of Mauritius, Réduit, Mauritius
| | - Gunes Ak
- Biochemistry and Physiology Research Laboratory, Department of Biology, Science Faculty, Selcuk University Campus, Konya, Turkey
| | - Jugreet B Sharmeen
- Department of Health Sciences, Faculty of Medicine and Health Sciences, University of Mauritius, Réduit, Mauritius
| | - Gokhan Dervisoglu
- Department of Molecular Biology and Genetics, Faculty of Science and Art, Bingol University, 12000, Bingol, Turkey
| | - Fethi Ahmet Ozdemir
- Department of Molecular Biology and Genetics, Faculty of Science and Art, Bingol University, 12000, Bingol, Turkey
| | - Mohamad Fawzi Mahomoodally
- Department of Health Sciences, Faculty of Medicine and Health Sciences, University of Mauritius, Réduit, Mauritius.
| | - Gokhan Zengin
- Biochemistry and Physiology Research Laboratory, Department of Biology, Science Faculty, Selcuk University Campus, Konya, Turkey.
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Marine Seagrass Extract of Thalassia testudinum Suppresses Colorectal Tumor Growth, Motility and Angiogenesis by Autophagic Stress and Immunogenic Cell Death Pathways. Mar Drugs 2021; 19:md19020052. [PMID: 33499163 PMCID: PMC7912590 DOI: 10.3390/md19020052] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 01/13/2021] [Accepted: 01/18/2021] [Indexed: 12/12/2022] Open
Abstract
Marine plants have become an inexhaustible reservoir of new phytopharmaceuticals for cancer treatment. We demonstrate in vitro/in vivo antitumor efficacy of a standardized polyphenol extract from the marine angiosperm Thalassia testudinum (TTE) in colon tumor cell lines (RKO, SW480, and CT26) and a syngeneic allograft murine colorectal cancer model. MTT assays revealed a dose-dependent decrease of cell viability of RKO, CT26, and SW480 cells upon TTE treatment with IC50 values of, respectively, 175, 115, and 60 μg/mL. Furthermore, TTE significantly prevented basal and bFGF-induced angiogenesis in the chicken chorioallantoic membrane angiogenesis assay. In addition, TTE suppressed bFGF-induced migration of endothelial cells in a wound closure assay. Finally, TTE treatment abrogated CT26 colorectal cancer growth and increased overall organism survival in a syngeneic murine allograft model. Corresponding transcriptome profiling and pathway analysis allowed for the identification of the mechanism of action for the antitumor effects of TTE. In line with our in vitro/in vivo results, TTE treatment triggers ATF4-P53-NFκB specific gene expression and autophagy stress pathways. This results in suppression of colon cancer cell growth, cell motility, and angiogenesis pathways in vitro and in addition promotes antitumor immunogenic cell death in vivo.
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