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Liu XJ, Su HG, Peng XR, Bi HC, Qiu MH. An updated review of the genus Rhododendron since 2010: Traditional uses, phytochemistry, and pharmacology. PHYTOCHEMISTRY 2024; 217:113899. [PMID: 37866447 DOI: 10.1016/j.phytochem.2023.113899] [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: 05/13/2023] [Revised: 10/15/2023] [Accepted: 10/15/2023] [Indexed: 10/24/2023]
Abstract
Rhododendron, the largest genus of Ericaceae, consists of approximately 1000 species that are widely distributed in Europe, Asia, and North America but mainly exist in Asia. Rhododendron plants have not only good ornamental and economic value but also significant medicinal potential. In China, many Rhododendron plants are used as traditional Chinese medicine or ethnic medicine for the treatment of respiratory diseases, pain, bleeding and inflammation. Rhododendron is known for its abundant metabolites, especially diterpenoids. In the past 13 years, a total of 610 chemical constituents were reported from Rhododendron plants, including 222 diterpenoids, 122 triterpenoids, 103 meroterpenoids, 71 flavonoids and 92 other constituents (lignans, phenylpropanoids, phenolic acids, monoterpenoids, sesquiterpenoids, coumarins, steroids, fatty acids). Moreover, the bioactivities of various extracts and isolates, both in vitro and in vivo, were also investigated. Our review summarized the research progress of Rhododendron regarding traditional uses, phytochemistry and pharmacology in the past 13 years (2010 to December 2022), which will provide new insight for prompting further research on Rhododendron application and drug development.
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Affiliation(s)
- Xing-Jian Liu
- Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Hai-Guo Su
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Science, Kunming, 650201, China; Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Xing-Rong Peng
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Science, Kunming, 650201, China
| | - Hui-Chang Bi
- Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China; NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, China.
| | - Ming-Hua Qiu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Science, Kunming, 650201, China.
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Liu G, Qin P, Cheng X, Wu L, Wang R, Gao W. Ursolic acid: biological functions and application in animal husbandry. Front Vet Sci 2023; 10:1251248. [PMID: 37964910 PMCID: PMC10642196 DOI: 10.3389/fvets.2023.1251248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Accepted: 10/09/2023] [Indexed: 11/16/2023] Open
Abstract
Ursolic acid (UA) is a plant-derived pentacyclic triterpenoid with 30 carbon atoms. UA has anti-inflammatory, antioxidative, antimicrobial, hepato-protective, anticancer, and other biological activities. Most studies on the biological functions of UA have been performed in mammalian cell (in vitro) and rodent (in vivo) models. UA is used in animal husbandry as an anti-inflammatory and antiviral agent, as well as for enhancing the integrity of the intestinal barrier. Although UA has been shown to have significant in vitro bacteriostatic effects, it is rarely used in animal nutrition. The use of UA as a substitute for oral antibiotics or as a novel feed additive in animal husbandry should be considered. This review summarizes the available data on the biological functions of UA and its applications in animal husbandry.
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Affiliation(s)
- Guanhui Liu
- School of Life Sciences and Food Engineering, Hebei University of Engineering, Handan, China
| | - Peng Qin
- Chenguang Biotechnology Group Handan Co., Ltd., Handan, China
| | - Xinying Cheng
- Chenguang Biotechnology Group Handan Co., Ltd., Handan, China
| | - Lifei Wu
- Hebei Plant Extraction Innovation Center Co., Ltd., Handan, China
- Hebei Province Plant Source Animal Health Products Technology Innovation Center, Handan, China
| | - Ruoning Wang
- School of Life Sciences and Food Engineering, Hebei University of Engineering, Handan, China
| | - Wei Gao
- Hebei Plant Extraction Innovation Center Co., Ltd., Handan, China
- Hebei Province Plant Source Animal Health Products Technology Innovation Center, Handan, China
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Kornel A, Nadile M, Tsiani E. Evidence of the Beneficial Effects of Ursolic Acid against Lung Cancer. Molecules 2022; 27:7466. [PMID: 36364289 PMCID: PMC9655894 DOI: 10.3390/molecules27217466] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 10/21/2022] [Accepted: 10/28/2022] [Indexed: 10/29/2023] Open
Abstract
Lung cancer is the leading cause of cancer-related deaths globally. Despite current treatment approaches that include surgery, chemotherapy, radiation and immunotherapies, lung cancer accounted for 1.79 million deaths worldwide in 2020, emphasizing the urgent need to find novel agents and approaches for more effective treatment. Traditionally, chemicals derived from plants, such as paclitaxel and docetaxel, have been used in cancer treatment, and in recent years, research has focused on finding other plant-derived chemicals that can be used in the fight against lung cancer. Ursolic acid is a polyphenol found in high concentrations in cranberries and other fruits and has been demonstrated to have anti-inflammatory, antioxidant and anticancer properties. In this review, we summarize recent research examining the effects of ursolic acid and its derivatives on lung cancer. Data from in vitro cell culture and in vivo animal studies show potent anticancer effects of ursolic acid and indicate the need for clinical studies.
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Affiliation(s)
- Amanda Kornel
- Department of Health Sciences, Faculty of Applied Health Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada
| | - Matteo Nadile
- Department of Health Sciences, Faculty of Applied Health Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada
| | - Evangelia Tsiani
- Department of Health Sciences, Faculty of Applied Health Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada
- Centre for Bone and Muscle Health, Brock University, St. Catharines, ON L2S 3A1, Canada
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Cao X, He Q. Ursolic acid inhibits proliferation, migration and invasion of human papillary thyroid carcinoma cells via CXCL12/CXCR4/CXCR7 axis through cancer-associated fibroblasts. Hum Exp Toxicol 2022; 41:9603271221111333. [PMID: 35786050 DOI: 10.1177/09603271221111333] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
As a pentacyclic triterpenoid compound, Ursolic acid (UA) broads range of biological effects. CXCL12 is a ligand for CXCR4 and CXCR7 proteins on thyroid cancer cells. Here we examined the effects of UA on the proliferation, migration and invasion of papillary thyroid carcinoma (PTCs) in a dose-manner. In addition, UA can reduce the expression levels of CXCR4 and CXCR7 in PTCs. In addition to this direct anticancer pathway, studies have shown that UA can play an anticancer role by affecting the secretion of CXCL12 in cancer-associated fibroblasts (CAFs). After treated with UA, normal fibroblasts and CAFs culture medium (CM) showed differential CXCL12 expression levels. We prepared fibroblast conditioned medium according to the intervention of UA, then cultured TPC-1 and B-CPAP cells with differential CM, and detected significant differences in the proliferation, migration and invasion of cancer cells. Our findings uncovered an indirect anticancer mechanism of UA. This cancer chemopreventive properties is expected to make UA a clinically useful chemopreventive agent.
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Affiliation(s)
- Xianjiao Cao
- Department of Thyroid and Breast Surgery, The 960th Hospital of the PLA Joint Logistics Support Force, Jinan, China
| | - Qingqing He
- Department of Thyroid and Breast Surgery, The 960th Hospital of the PLA Joint Logistics Support Force, Jinan, China
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Tang ZY, Li Y, Tang YT, Ma XD, Tang ZY. Anticancer activity of oleanolic acid and its derivatives: Recent advances in evidence, target profiling and mechanisms of action. Biomed Pharmacother 2021; 145:112397. [PMID: 34798468 DOI: 10.1016/j.biopha.2021.112397] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 10/28/2021] [Accepted: 11/02/2021] [Indexed: 11/16/2022] Open
Abstract
Oleanolic acid (OA, 3 β - hydroxyoleanolic acid-12-en-28-oic acid) is a pentacyclic triterpenoid present in many plants. As a new framework for development of semi synthetic triterpenoids, OA is of great significance in the discovery of anticancer drugs. Some of these derivatives, such as CDDO (2-cyano-3,12-dioxooleana-1, 9 (11)-dien-28-oic acid) have been verified in clinical trials, while other derivatives studied previously, such as SZC014, SZC015 and SZC017 (OA derivatives respectively), are also candidate drugs for cancer treatment. This paper reviews the preclinical studies, literature evidence, target analysis and anticancer mechanism of OA and its derivatives. The mechanism of action of its derivatives mainly includes anti-cancer cell proliferation, inducing tumor cell apoptosis, inducing autophagy, regulating cell cycle regulatory proteins, inhibiting vascular endothelial growth, anti angiogenesis, inhibiting tumor cell migration and invasion. In recent years, the molecular mechanism of OA and its derivatives has been elucidated. These effects seem to be mediated by the alterations in a variety of signaling pathways induced by OA and its derivatives. In conclusion, OA and its derivatives are considered as important candidate drugs for the treatment of cancer, indicating that OA and its derivatives have the potential to be used as anticancer drugs in practice.
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Affiliation(s)
- Zhong-Yuan Tang
- Department of Orthodontics, School of Stomatology, Jilin University, 1500 Qinghua Road, Changchun 130021, Jilin, PR China
| | - Yang Li
- Pharmacology Department, Dalian Medical University, Dalian, Liaoning 116044, PR China
| | - Yu-Ting Tang
- Pharmacology Department, Dalian Medical University, Dalian, Liaoning 116044, PR China
| | - Xiao-Dong Ma
- Pharmacology Department, Dalian Medical University, Dalian, Liaoning 116044, PR China
| | - Ze-Yao Tang
- Pharmacology Department, Dalian Medical University, Dalian, Liaoning 116044, PR China.
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Ursolic Acid and Related Analogues: Triterpenoids with Broad Health Benefits. Antioxidants (Basel) 2021; 10:antiox10081161. [PMID: 34439409 PMCID: PMC8388988 DOI: 10.3390/antiox10081161] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 06/04/2021] [Accepted: 06/22/2021] [Indexed: 12/14/2022] Open
Abstract
Ursolic acid (UA) is a well-studied natural pentacyclic triterpenoid found in herbs, fruit and a number of traditional Chinese medicinal plants. UA has a broad range of biological activities and numerous potential health benefits. In this review, we summarize the current data on the bioavailability and pharmacokinetics of UA and review the literature on the biological activities of UA and its closest analogues in the context of inflammation, metabolic diseases, including liver and kidney diseases, obesity and diabetes, cardiovascular diseases, cancer, and neurological disorders. We end with a brief overview of UA’s main analogues with a special focus on a newly discovered naturally occurring analogue with intriguing biological properties and potential health benefits, 23-hydroxy ursolic acid.
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Pan L, Liu Y, Lan H, Bao N, Zhao Y, Sun H, Qin G, Farouk MH. Biological Mechanisms Induced by Soybean Agglutinin Using an Intestinal Cell Model of Monogastric Animals. Front Vet Sci 2021; 8:639792. [PMID: 34150879 PMCID: PMC8207199 DOI: 10.3389/fvets.2021.639792] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 04/30/2021] [Indexed: 11/30/2022] Open
Abstract
Soybean agglutinin (SBA) has a toxic effect on most animals. The anti-nutritional mechanisms of SBA are not fully understood, in terms of cell survival activity and metabolism of intestinal cells. This study aims to investigate the effects of SBA on the cell cycle, apoptosis, and to verify the mechanism of SBA anti-nutritional characters based on proteomic-based analysis. The IPEC-J2 cell line was cultured with medium containing 0.0, 0.5, or 2.0 mg/mL SBA. With increasing SBA levels, the percentage of the cells at G0/G1 phase, cell apoptosis rates, expressions of Bax and p21, and the activities of Casp-3 and Casp-9 were increased, while cyclin D1 and Bcl-2 expressions were declined (p < 0.05). The proteomic analysis showed that the numbers of differentially expressed proteins, induced by SBA, were mainly enriched in different pathways including DNA replication, base excision repair, nucleus excision repair, mismatch repair, amide and peptide biosynthesis, ubiquitin-mediated proteolysis, as well as structures and functions of mitochondria and ribosome. In conclusion, the anti-nutritional mechanism of SBA is a complex cellular process. Such process including DNA related activities; protein synthesis and metabolism; signal-conducting relation; as well as subcellular structure and function. This study provides comprehensive information to understand the toxic mechanism of SBA in monogastrics.
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Affiliation(s)
- Li Pan
- Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science, College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Yan Liu
- Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science, College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Hainan Lan
- Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science, College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Nan Bao
- Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science, College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Yuan Zhao
- Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science, College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Hui Sun
- Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science, College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Guixin Qin
- Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science, College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Mohammed Hamdy Farouk
- Animal Production Department, Faculty of Agriculture, Al-Azhar University, Cairo, Egypt
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Li Y, Sun Q, Li H, Yang B, Wang M. Vitexin suppresses renal cell carcinoma by regulating mTOR pathways. Transl Androl Urol 2020; 9:1700-1711. [PMID: 32944531 PMCID: PMC7475661 DOI: 10.21037/tau-20-1094] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Background Renal cell carcinoma (RCC) is one of the most common malignant tumors in the world. Vitexin (apigenin-8-C-D-glucopyranoside), a bioactive compound isolated from a variety of plants, has multiple protective effects on human health. The purpose of this study was to investigate the role of vitexin in RC and the related molecular mechanism. Methods Proliferation was tested with Cell Counting Kit-8 and Edu staining. Apoptosis was studied with flow cytometry. Immunofluorescent was applied to show LC3 spots. BALB/c nude mice bearing ACHN cells were established and immunohistochemical staining was applied to validate the in vivo effects of vitexin. All the effects and possible signaling pathways involved were validated with western blotting. Results Seventy micromole of vitexin started to show significant effect on the growth of normal renal tubular epithelial cells (HK-2), so 0, 10, 20 and 40 µM of vitexin were used in later experiments. Vitexin inhibited growth and induced apoptosis of ACHN and OS-RC-2 cells in a dose-dependent manner, and promoted excessive autophagy by reducing p62 levels and increasing Beclin1 and LC3II levels. Western blotting revealed that vitexin significantly increased the phosphorylation levels of Adenosine Monophosphate Activated Protein Kinase (AMPK) and c-Jun N-terminal kinase (JNK) in ACHN and OS-RC-2 cells, while decreasing the phosphorylation levels of phosphatidylinositol 3-kinase/activates protein kinase/mammalian target of rapamycin (PI3K/AKT/mTOR). In BALB/c nude mice bearing ACHN cells, vitexin inhibited tumor growth, reduced Ki67 and increased caspase-3 levels in the tumor tissues. Conclusions The results indicated that the tumor suppressive role of vitexin in ACHN and OS-RC-2 cells involved AMPK/mTOR, PI3K/AKT/mTOR, and JNK pathways. Therefore, vitexin may be a promising drug for the treatment of RCC.
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Affiliation(s)
- Yuhong Li
- Department of Pharmacy, The First People's Hospital of Jingmen, Jingmen, China
| | - Qinghai Sun
- Clinical Medicine Discipline, Weifang Traditional Chinese Hospital, Weifang, China
| | - Hui Li
- Department of Medicine, Jining No. 1 People's Hospital, Jining, China
| | - Bin Yang
- Department of Vascular Surgery, Jining No. 1 People's Hospital, Jining, China
| | - Meng Wang
- Department of Medicine, Jining No. 1 People's Hospital, Jining, China
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Peng F, Xie Y, Li X, Li G, Yang Y. Chemical components and bioactivity evaluation of extracts from pear (Pyrus UssuriensisMaxim) fruit. J Food Biochem 2018. [DOI: 10.1111/jfbc.12586] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fei Peng
- Analysis and Testing Center, Hebei Normal University of Science and Technology; Qinhuangdao China
| | - Ying Xie
- Analysis and Testing Center, Hebei Normal University of Science and Technology; Qinhuangdao China
| | - Xiaojing Li
- Department of Chemical Engineering; Hebei Normal University of Science and Technology; Qinhuangdao China
| | - Gang Li
- Department of Chemical Engineering; Hebei Normal University of Science and Technology; Qinhuangdao China
| | - Yuedong Yang
- Department of Chemical Engineering; Hebei Normal University of Science and Technology; Qinhuangdao China
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Teng Y, Zhang H, Zhou J, Zhan G, Yao G. Hebecarposides A-K, antiproliferative lanostane-type triterpene glycosides from the leaves of Lyonia ovalifolia var. hebecarpa. PHYTOCHEMISTRY 2018; 151:32-41. [PMID: 29660562 DOI: 10.1016/j.phytochem.2018.03.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 03/18/2018] [Accepted: 03/31/2018] [Indexed: 06/08/2023]
Abstract
Eleven previously undescribed lanostane-type triterpene glycosides, hebecarposides A-K, were isolated from the leaves of Lyonia ovalifolia var. hebecarpa (Ericaceae), along with two known analogues, lyonifolosides L and O. The structures of hebecarposides A-K were established by extensive spectroscopic analysis and chemical methods, and the absolute configuration of C-24 in hebecarposides A and E was determined to be S and R, respectively, by a Mo2(OAc)4-induced electronic circular dichroism method. This is the first report of the presence of lanostane-type triterpene glycosides in L. ovalifolia var. hebecarpa. All compounds were evaluated for their antiproliferative activities against five cancer cell lines, SMMC-7721, HL-60, SW480, MCF-7, and A-549, and a normal epithelial cell line BEAS-2B, and none of them showed general cytotoxity to the normal cell line BEAS-2B. Interestingly, hebecarposides C, D, G, and K selectively inhibited the proliferation of HL-60 and SMMC-7721 cell lines, and hebecarposides C and D showed significant anti-proliferative activities against A-549 cell lines than the positive control, cis-platin. In addition, hebecarposides C and H exhibited more potent anti-proliferative activities against MCF-7 than cis-platin.
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Affiliation(s)
- Yang Teng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China; College of Pharmacy, Jiamusi University, Jiamusi 154007, People's Republic of China
| | - Hanqi Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Junfei Zhou
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Guanqun Zhan
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China.
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Fan XX, Pan HD, Li Y, Guo RJ, Leung ELH, Liu L. Novel therapeutic strategy for cancer and autoimmune conditions: Modulating cell metabolism and redox capacity. Pharmacol Ther 2018; 191:148-161. [PMID: 29953901 DOI: 10.1016/j.pharmthera.2018.06.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Dysregulation of cell metabolism and redox balance is implicated in the pathogenesis and progression of cancer and autoimmune diseases. Because the cell proliferation and apoptotic regulatory pathways are interconnected with metabolic and redox signalling pathways, the current mono-target treatment is ineffective, and multi-drug resistance remains common. Complex diseases are often implicated in a network-based context of pathology; therefore, a new holistic intervention approach is required to block multi-crosstalk in such complicated circumstances. The use of therapeutic agents isolated from herbs to holistically modulate metabolism and redox state has been shown to relieve carcinoma growth and the inflammatory response in autoimmune disorders. Multiple clinically applied or novel herbal chemicals with metabolic and redox modulatory capacity as well as low toxicity have recently been identified. Moreover, new metabolic targets and mechanisms of drug action have been discovered, leading to the exploration of new pathways for drug repositioning, clinical biomarker spectra, clinical treatment strategies and drug development. Taken together with multiple supporting examples, the modulation of cell metabolism and the redox capacity using herbal chemicals is emerging as a new, alternative strategy for the holistic treatment of cancer and autoimmune disorders. In the future, the development of new diagnostic tools based on the detection of metabolic and redox biomarkers, reformulation of optimized herbal compositions using artificial intelligence, and the combination of herbs with mono-targeting drugs will reveal new potential for clinical application.
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Affiliation(s)
- Xing-Xing Fan
- State Key Laboratory of Quality Research in Chinese Medicine, Macau Institute For Applied Research in Medicine and Health, Macau University of Science and Technology, Macau, SAR, China
| | - Hu-Dan Pan
- State Key Laboratory of Quality Research in Chinese Medicine, Macau Institute For Applied Research in Medicine and Health, Macau University of Science and Technology, Macau, SAR, China
| | - Ying Li
- State Key Laboratory of Quality Research in Chinese Medicine, Macau Institute For Applied Research in Medicine and Health, Macau University of Science and Technology, Macau, SAR, China
| | - Rui-Jin Guo
- State Key Laboratory of Quality Research in Chinese Medicine, Macau Institute For Applied Research in Medicine and Health, Macau University of Science and Technology, Macau, SAR, China
| | - Elaine Lai-Han Leung
- State Key Laboratory of Quality Research in Chinese Medicine, Macau Institute For Applied Research in Medicine and Health, Macau University of Science and Technology, Macau, SAR, China; Department of Respiratory and Critical Care Medicine, Taihe Hospital, Hubei University of Medicine, Hubei, China; Department of Thoracic Surgery, Guangzhou Institute of Respiratory Health and State Key Laboratory of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.
| | - Liang Liu
- State Key Laboratory of Quality Research in Chinese Medicine, Macau Institute For Applied Research in Medicine and Health, Macau University of Science and Technology, Macau, SAR, China.
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Wang CM, Yeh KL, Tsai SJ, Jhan YL, Chou CH. Anti-Proliferative Activity of Triterpenoids and Sterols Isolated from Alstonia scholaris against Non-Small-Cell Lung Carcinoma Cells. Molecules 2017; 22:E2119. [PMID: 29194373 PMCID: PMC6149710 DOI: 10.3390/molecules22122119] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 11/28/2017] [Accepted: 11/30/2017] [Indexed: 01/11/2023] Open
Abstract
(1) Background: In China and South Asia, Alstonia scholaris (Apocynaceae) is an important medicinal plant that has been historically used in traditional ethnopharmacy to treat infectious diseases. Although various pharmacological activities have been reported, the anti-lung cancer components of A. scholaris have not yet been identified. The objective of this study is to evaluate the active components of the leaf extract of A. scholaris, and assess the anti-proliferation effects of isolated compounds against non-small-cell lung carcinoma cells; (2) Methods: NMR was used to identify the chemical constitutes isolated from the leaf extract of A. scholaris. The anti-proliferative activity of compounds against non-small-cell lung carcinoma cells was assessed by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay; (3) Results: Eight triterpenoids and five sterols were isolated from the hexane portion of A. scholaris, and structurally identified as: (1) ursolic acid, (2) oleanolic acid, (3) betulinic acid, (4) betulin, (5) 2β,3β,28-lup-20(29)-ene-triol, (6) lupeol, (7) β-amyrin, (8) α-amyrin, (9) poriferasterol, (10) epicampesterol, (11) β-sitosterol, (12) 6β-hydroxy-4-stigmasten-3-one, and (13) ergosta-7,22-diene-3β,5α,6β-triol. Compound 5 was isolated from a plant source for the first time. In addition, compounds 9, 10, 12, and 13 were also isolated from A. scholaris for the first time. Ursolic acid, betulinic acid, betulin, and 2β,3β,28-lup-20(29)-ene-triol showed anti-proliferative activity against NSCLC, with IC50 of 39.8, 40.1, 240.5 and 172.6 μM, respectively.; (4) Conclusion: These findings reflect that pentacyclic triterpenoids are the anti-lung cancer chemicals in A. scholaris. The ability of ursolic acid, betulinic acid, betulin, and 2β,3β,28-lup-20(29)-ene-triol to inhibit the proliferative activity of NSCLC can constitute a valuable group of therapeutic agents in the future.
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Affiliation(s)
- Chao-Min Wang
- Research Center for Biodiversity, China Medical University, Taichung 40402, Taiwan.
| | - Kuei-Lin Yeh
- Department of Laboratory, Chang Bing Show Chwan Memorial Hospital, Changhua 500, Taiwan.
| | - Shang-Jie Tsai
- Research Center for Biodiversity, China Medical University, Taichung 40402, Taiwan.
| | - Yun-Lian Jhan
- Research Center for Biodiversity, China Medical University, Taichung 40402, Taiwan.
| | - Chang-Hung Chou
- Research Center for Biodiversity, China Medical University, Taichung 40402, Taiwan.
- Department of Biological Science and Technology, China Medical University, Taichung 40402, Taiwan.
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Kuo YJ, Liu YJ, Way TD, Chiang SY, Lin JG, Chung JG. Synergistic inhibition of leukemia WEHI-3 cell growth by arsenic trioxide and Hedyotis diffusa Willd extract in vitro and in vivo. Exp Ther Med 2017; 13:3388-3396. [PMID: 28587418 PMCID: PMC5450767 DOI: 10.3892/etm.2017.4392] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Accepted: 01/13/2017] [Indexed: 01/24/2023] Open
Abstract
Arsenic trioxide (ATO) is clinically used to treat acute promyelocytic leukemia (APL); however, the therapeutic dose of ATO may prompt critical cardiac side effects. Combination therapy may be used to improve the therapeutic efficiency. To evaluate this possibility, the present study determined the combined effects of Hedyotis diffusa Willd (HDW) extract and ATO in leukemic WEHI-3 cells. The results demonstrated that co-treatment of HDW with ATO resulted in a synergistic augmentation of cytotoxicity in cells at the concentration tested. In order to investigate the potential therapeutic application for leukemia, the combined effects of HDW and ATO were analyzed on the WEHI-3 cell-induced orthotopic leukemia animal model in vivo. The WEHI-3 cells in mice with leukemia were established by injecting murine WEHI-3 cells into BALB/c mice, and treating them with HDW and/or combined with ATO. The results indicated that HDW alone or HDW combined with ATO promoted the total survival rate of mice with leukemia, and these effects are dose-dependent. HDW alone or HDW combined with ATO did not affect the body weight, decreased the spleen weight and did not affect the liver weight. Furthermore, the results demonstrated that HDW alone or HDW combined with ATO resulted in a synergistic augmentation of apoptosis in WEHI-3 cells at the concentration tested. In order to further reveal the detailed mechanism of this synergistic effect on apoptosis, apoptosis-related proteins were also evaluated. The data revealed that HDW alone or HDW combined with ATO induced the expression of death receptor 4 (DR4) and DR5 and the activation of poly adenosine diphosphate ribose polymerase, caspase-3, -8 and -9. Furthermore, HDW alone or HDW combined with ATO decreased the expression levels of B-cell lymphoma 2, B-cell lymphoma-extra large and survivin, and increased the expression levels of Bak and t-Bid. Altogether, the results indicate that the combination of HDW with ATO may be a promising strategy used to increase the clinical efficacy of ATO in the treatment of APL.
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Affiliation(s)
- Yu-Jui Kuo
- Graduate Institute of Chinese Medicine, China Medical University, Taichung 40402, Taiwan, R.O.C.,Department of Traditional Chinese Medicine, Tainan Municipal Hospital, Tainan 70173, Taiwan, R.O.C
| | - Yan-Jin Liu
- Graduate Institute of Pharmaceutical Chemistry, College of Pharmacy, China Medical University, Taichung 40402, Taiwan, R.O.C
| | - Tzong-Der Way
- Department of Biological Sciences and Technology, College of Biopharmaceutical and Food Sciences, China Medical University, Taichung 40402, Taiwan, R.O.C
| | - Su-Yin Chiang
- Department of Health and Nutrition Biotechnology, College of Health Science, Asia University, Taichung 41354, Taiwan, R.O.C
| | - Jaung-Geng Lin
- Graduate Institute of Chinese Medicine, China Medical University, Taichung 40402, Taiwan, R.O.C
| | - Jing-Gung Chung
- Department of Biological Sciences and Technology, College of Biopharmaceutical and Food Sciences, China Medical University, Taichung 40402, Taiwan, R.O.C.,Department of Biotechnology, Asia University, Taichung 41354, Taiwan, R.O.C
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Cui H, Wu S, Shang Y, Li Z, Chen M, Li F, Wang C. Pleurotus nebrodensis polysaccharide(PN50G) evokes A549 cell apoptosis by the ROS/AMPK/PI3K/AKT/mTOR pathway to suppress tumor growth. Food Funct 2016; 7:1616-27. [PMID: 26918909 DOI: 10.1039/c6fo00027d] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Since the strong antineoplastic potential against A549 cells of Pleurotus nebrodensis polysaccharide (PN50G) in vitro has been proven previously, the definitive mechanism of PN50G-induced apoptosis in A549 cells in vivo was further investigated. All the results indicated that PN50G significantly suppressed tumor growth in A549 tumor-bearing mice. Tumor cells treated with PN50G were arrested in the G0/G1 phase, and marked changes in the expression of cell cycle-related proteins, including cyclin D1, cyclin A and cyclin B1, were observed. Moreover, western blotting analysis indicated that PN50G triggered the mitochondrial apoptotic pathway, for an increased Bax/Bcl-2 ratio, release of cytochrome c, cleavage of caspase-3 and PRPP in A549 tumor cells were observed. And the decrease in the expression of the translation related protein P70S6K was observed, because PN50G activated AMPK phosphorylation, but inhibited PI3K/AKT phosphorylation and suppressed the activation of the mammalian target of rapamycin (mTOR) induced by PN50G. In vivo imaging was performed on tumor-bearing mice, and the results indicated that PN50G significantly increased the intracellular levels of reactive oxygen species (ROS). Furthermore, it indicated that PN50G promoted the protein expression of Beclin 1 and LC-3 in a dose-dependent manner. All the results suggested that PN50G-mediated apoptosis and autophagy of A549 tumor cells in vivo mainly involved in the mitochondrial pathway and the AMPK/PI3K/mTOR pathway.
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Affiliation(s)
- Haiyan Cui
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, School of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China.
| | - Shufen Wu
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, School of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China.
| | - Yunfei Shang
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, School of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China.
| | - Zhenjing Li
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, School of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China.
| | - Mianhua Chen
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, School of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China.
| | - Fengjuan Li
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, School of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China.
| | - Changlu Wang
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, School of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, PR China.
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Wang CM, Jhan YL, Tsai SJ, Chou CH. The Pleiotropic Antibacterial Mechanisms of Ursolic Acid against Methicillin-Resistant Staphylococcus aureus (MRSA). Molecules 2016; 21:E884. [PMID: 27399657 PMCID: PMC6273082 DOI: 10.3390/molecules21070884] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 06/23/2016] [Accepted: 06/30/2016] [Indexed: 01/20/2023] Open
Abstract
(1) BACKGROUND: Several triterpenoids were found to act synergistically with classes of antibiotic, indicating that plant-derived chemicals have potential to be used as therapeutics to enhance the activity of antibiotics against multidrug-resistant pathogens. However, the mode of action of triterpenoids against bacterial pathogens remains unclear. The objective of this study is to evaluate the interaction between ursolic acid against methicillin-resistant Staphylococcus aureus (MRSA); (2) METHODS: The ability of ursolic acid to damage mammalian and bacterial membranes was examined. The proteomic response of methicillin-resistant S. aureus in ursolic acid treatment was investigated using two-dimensional (2D) proteomic analysis; (3) RESULTS: Ursolic acid caused the loss of staphylococcal membrane integrity without hemolytic activity. The comparison of the protein pattern of ursolic acid-treated and normal MRSA cells revealed that ursolic acid affected a variety of proteins involved in the translation process with translational accuracy, ribonuclease and chaperon subunits, glycolysis and oxidative responses; (4) CONCLUSION: The mode of action of ursolic acid appears to be the influence on the integrity of the bacterial membrane initially, followed by inhibition of protein synthesis and the metabolic pathway. These findings reflect that the pleiotropic effects of ursolic acid against MRSA make it a promising antibacterial agent in pharmaceutical research.
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Affiliation(s)
- Chao-Min Wang
- Research Center for Biodiversity, China Medical University, Taichung 40402, Taiwan.
| | - Yun-Lian Jhan
- Research Center for Biodiversity, China Medical University, Taichung 40402, Taiwan.
| | - Shang-Jie Tsai
- Research Center for Biodiversity, China Medical University, Taichung 40402, Taiwan.
| | - Chang-Hung Chou
- Research Center for Biodiversity, China Medical University, Taichung 40402, Taiwan.
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Antibacterial and Synergistic Activity of Pentacyclic Triterpenoids Isolated from Alstonia scholaris. Molecules 2016; 21:139. [PMID: 26821000 PMCID: PMC6273878 DOI: 10.3390/molecules21020139] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Revised: 01/12/2016] [Accepted: 01/21/2016] [Indexed: 11/17/2022] Open
Abstract
(1) Background: Alstonia scholaris (Apocynaceae) is an important medicinal plant that has been historically used in “Dai” ethnopharmacy to treat infectious diseases in China. Although various pharmacological activities have been reported, the antimicrobial constitutes of A. scholaris have not yet been identified. The objective of this study is to evaluate the antibacterial constitutes from the leaf extract of A. scholaris and to assess the synergistic effects of isolated compounds with antibiotics against bacterial pathogens.; (2) Methods: The chemical constitutes isolated from the leaf extract of A. scholaris were structurally identified by NMR. The antibacterial and synergistic effect of compounds was assessed by calculating the minimal inhibitory concentration (MIC), checkerboard dilution test, and time-kill assay.; (3) Results: Six pentacyclic triterpenoids were structurally identified as (1) lupeol, (2) betulin, (3) 3-hydroxy-11-ursen-28,13-olide, (4) betulinic acid, (5) oleanolic acid and (6) ursolic acid. Both oleanolic and ursolic acid showed antibacterial activity but were limited to Gram-positive bacteria. Ursolic acid showed a synergistic effect with ampicillin and tetracycline against both Bacillus cereus and S. aureus.; (4) Conclusion: These findings reflect that pentacyclic triterpenoids are the antibacterial chemicals in A. scholaris. The ability of ursolic acid to enhance the activity of antibiotics can constitute a valuable group of therapeutic agents in the future.
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Way TD, Tsai SJ, Wang CM, Jhan YL, Ho CT, Chou CH. Cinnamtannin D1 from Rhododendron formosanum Induces Autophagy via the Inhibition of Akt/mTOR and Activation of ERK1/2 in Non-Small-Cell Lung Carcinoma Cells. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:10407-10417. [PMID: 26567590 DOI: 10.1021/acs.jafc.5b04375] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In our previous study, ursolic acid present in the leaves of Rhododendron formosanum was found to possess antineoplastic activity. We further isolated and unveiled a natural product, cinnamtannin D1 (CNT D1), an A-type procyanidin trimer in R. formosanum also exhibiting anticancer efficacy that induced G1 arrest (83.26 ± 3.11% for 175 μM CNT D1 vs 69.28 ± 1.15% for control, p < 0.01) and autophagy in non-small-cell lung carcinoma (NSCLC) cells. We found that CNT D1-mediated autophagy was via the noncanonical pathway, being beclin-1-independent but Atg5 (autophagy-related genes 5)-dependent. Inhibition of autophagy with a specific inhibitor enhanced cell death, suggesting a cytoprotective function for autophagy in CNT D1-treated NSCLC cells. Moreover, CNT D1 inhibited the Akt/mammalian target of the rapamycin (mTOR) pathway and activated the extracellular signal-regulated kinases 1/2 (ERK1/2) pathway, resulting in induction of autophagy.
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Affiliation(s)
- Tzong-Der Way
- Department of Health and Nutrition Biotechnology, College of Health Science, Asia University , Taichung 41354, Taiwan
| | | | | | | | - Chi-Tang Ho
- Department of Food Science, Rutgers University , New Brunswick, New Jersey United States
| | - Chang-Hung Chou
- Department of Life Sciences, National Cheng Kung University , Tainan 701, Taiwan
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Rezk A, Al-Hashimi A, John W, Schepker H, Ullrich MS, Brix K. Assessment of cytotoxicity exerted by leaf extracts from plants of the genus Rhododendron towards epidermal keratinocytes and intestine epithelial cells. Altern Ther Health Med 2015; 15:364. [PMID: 26470706 PMCID: PMC4608053 DOI: 10.1186/s12906-015-0860-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Accepted: 09/10/2015] [Indexed: 11/10/2022]
Abstract
Background Rhododendron leaf extracts were previously found to exert antimicrobial activities against a range of Gram-positive bacteria. In this study, we investigated which of the extracts with these antimicrobial properties would be best suited for further exploitation. Specifically, the project aims to identify biologically active compounds that affect bacterial but not mammalian cells when applied in medical treatments such as lotions for ectopic application onto skin, or as orally administered drugs. Methods Different concentrations of DMSO-dissolved remnants of crude methanol Rhododendron leaf extracts were incubated for 24 h with cultured epidermal keratinocytes (human HaCaT cell line) and epithelial cells of the intestinal mucosa (rat IEC6 cell line) and tested for their cytotoxic potential. In particular, the cytotoxic potencies of the compounds contained in antimicrobial Rhododendron leaf extracts were assessed by quantifying their effects on (i) plasma membrane integrity, (ii) cell viability and proliferation rates, (iii) cellular metabolism, (iv) cytoskeletal architecture, and (v) determining initiation of cell death pathways by morphological and biochemical means. Results Extracts of almost all Rhododendron species, when applied at 500 μg/mL, were potent in negatively affecting both keratinocytes and intestine epithelial cells, except material from R. hippophaeoides var. hippophaeoides. Extracts of R. minus and R. racemosum were non-toxic towards both mammalian cell types when used at 50 μg/mL, which was equivalent to their minimal inhibitory concentration against bacteria. At this concentration, leaf extracts from three other highly potent antimicrobial Rhododendron species proved non-cytotoxic against one or the other mammalian cell type: Extracts of R. ferrugineum were non-toxic towards IEC6 cells, and extracts of R. rubiginosum as well as R. concinnum did not affect HaCaT cells. In general, keratinocytes proved more resistant than intestine epithelial cells against the treatment with compounds contained in Rhododendron leaf extracts. Conclusions We conclude that leaf extracts from highly potent antimicrobial R. minus and R. racemosum are safe to use at 50 μg/mL in 24-h incubations with HaCaT keratinocytes and IEC6 intestine epithelial cells in monolayer cultures. Extracts from R. rubiginosum as well as R. concinnum or R. ferrugineum are applicable to either keratinocytes or intestinal epithelial cells, respectively. Beyond the scope of the current study, further experiments are required to identify the specific compounds contained in those Rhododendron leaf extracts that exert antimicrobial activity while being non-cytotoxic when applied onto human skin or gastrointestinal tract mucosa. Thus, this study supports the notion that detailed phytochemical profiling and compound identification is needed for characterization of the leaf extracts from specific Rhododendron species in order to exploit their components as supplementary agents in antimicrobial phyto-medical treatments. Electronic supplementary material The online version of this article (doi:10.1186/s12906-015-0860-8) contains supplementary material, which is available to authorized users.
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Wang CM, Hsu YM, Jhan YL, Tsai SJ, Lin SX, Su CH, Chou CH. Structure Elucidation of Procyanidins Isolated from Rhododendron formosanum and Their Anti-Oxidative and Anti-Bacterial Activities. Molecules 2015; 20:12787-803. [PMID: 26184152 PMCID: PMC6332352 DOI: 10.3390/molecules200712787] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Revised: 07/03/2015] [Accepted: 07/13/2015] [Indexed: 12/17/2022] Open
Abstract
Rhododendron formosanum is an endemic species distributed in the central mountains of Taiwan. In this study, the biological activities of major procyanidins isolated from the leaf extract of R. formosanum were investigated. Four compounds, including two procyanidin dimers, procyanidin A1 (1) and B3 (2), and two procyanidin trimmers, procyanidin C4 (4) and cinnamtannin D1 (5), were isolated and identified on the basis of spectroscopic data. The structure of a new procyanidin dimer, rhodonidin A (3), was elucidated by 2D-NMR, CD spectrum and MS. The procyanidin trimmers and rhodonidin A are reported for the first time in Ericaceae. The biological activities of these procyanidins were evaluated using anti-bacterial and anti-oxidative assays. Only the new compound 3 demonstrated strong anti-bacterial activity against Staphylococcus aureus at an MIC value of 4 μg/mL. All compounds showed pronounced antioxidant activities and the activities are enhanced as the amount of OH groups in procyanidins increased. In conclusion, the pleiotropic effects of procyanidins isolated from the leaves of R. formosanum can be a source of promising compounds for the development of future pharmacological applications.
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Affiliation(s)
- Chao-Min Wang
- Research Center for Biodiversity, China Medical University, Taichung 40402, Taiwan.
| | - Yuan-Man Hsu
- Department of Biological Science and Technology, China Medical University, Taichung 40402, Taiwan.
| | - Yun-Lian Jhan
- Research Center for Biodiversity, China Medical University, Taichung 40402, Taiwan.
| | - Shang-Jie Tsai
- Research Center for Biodiversity, China Medical University, Taichung 40402, Taiwan.
| | - Shi-Xun Lin
- Research Center for Biodiversity, China Medical University, Taichung 40402, Taiwan.
| | - Chiu-Hsian Su
- Department of Biological Science and Technology, China Medical University, Taichung 40402, Taiwan.
| | - Chang-Hung Chou
- Research Center for Biodiversity, China Medical University, Taichung 40402, Taiwan.
- Department of Biological Science and Technology, China Medical University, Taichung 40402, Taiwan.
- Department of Life Sciences, National Cheng Kung University, Tainan 701, Taiwan.
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Zhao X, Liu M, Li D. Oleanolic acid suppresses the proliferation of lung carcinoma cells by miR-122/Cyclin G1/MEF2D axis. Mol Cell Biochem 2014; 400:1-7. [PMID: 25472877 DOI: 10.1007/s11010-014-2228-7] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Accepted: 09/27/2014] [Indexed: 12/13/2022]
Abstract
Oleanolic acid (OA) is a natural compound from plants with anti-tumor activities. However, the mechanism of the inhibitory effect of OA on cell cycle progression has not been completely explored. We employed several lung carcinoma cell lines to investigate the cell cycle-related molecular pathway affected by OA. The data revealed that OA suppressed the proliferation of lung cancer cells in both dose- and time-dependent manners, along with an increase in miR-122 abundance. The suppression of miR-122 abolished the effect of OA on lung cancer cells. CCNG1 and MEF2D, two putative miR-122 targets, were found to be downregulated by OA treatment. Restoring their expression counteracted the effect of OA on lung carcinoma cells. OA was further shown to induce the expression of miR-122-regulating transcriptional factors in lung cancer cells. Collectively, OA induced cell cycle arrest in lung cancer cells through miR-122/Cyclin G1/MEF2D pathway. This finding may contribute to the understanding of the molecular mechanism of OA's anti-tumor activity.
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Affiliation(s)
- Xiaoming Zhao
- Department of Thoracic Surgery, Shandong Cancer Hospital and Institute, 440 Jiyan Road, Jinan, 250117, Shandong, People's Republic of China
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