1
|
Uncovering the anti-angiogenic effect of semisynthetic triterpenoid CDDO-Im on HUVECs by an integrated network pharmacology approach. Comput Biol Med 2021; 141:105034. [PMID: 34802714 DOI: 10.1016/j.compbiomed.2021.105034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 11/03/2021] [Accepted: 11/11/2021] [Indexed: 01/01/2023]
Abstract
AIM To reveal the molecular mechanism of anti-angiogenic activity of semisynthetic triterpenoid CDDO-Im. MATERIALS AND METHODS Using re-analysis of cDNA microarray data of CDDO-Im-treated human vascular endothelial cells (HUVECs) (GSE71622), functional annotation of revealed differentially expressed genes (DEGs) and analysis of their co-expression, the key processes induced by CDDO-Im in HUVECs were identified. Venn diagram analysis was further performed to reveal the common DEGs, i.e. genes both susceptible to CDDO-Im and involved in the regulation of angiogenesis. A list of probable protein targets of CDDO-Im was prepared based on Connectivity Map/cheminformatics analysis and chemical proteomics data, among which the proteins that were most associated with the angiogenesis-related regulome were identified. Finally, identified targets were validated by molecular docking and text mining approaches. KEY FINDINGS The effect of CDDO-Im in HUVECs can be divided into two main phases: the short early phase (0.5-3 h) with an acute FOXD1/CEBPA/JUNB-regulated pro-angiogenic response induced by xenobiotic stress, and the second anti-angiogenic step (6-24 h) with massive suppression of various angiogenesis-related processes, accompanied by the activation of cytoprotective mechanisms. Our analysis showed that the anti-angiogenic activity of CDDO-Im is mediated by its inhibition of the expression of PLAT, ETS1, A2M, SPAG9, RASGRP3, FBXO32, GCNT1 and HDGFRP3 and its direct interactions with EGFR, mTOR, NOS2, HSP90AA1, MDM2, SYK, IRF3, ATR and KIF14. SIGNIFICANCE Our findings provide valuable insights into the understanding of the molecular mechanisms of the anti-angiogenic activity of cyano enone-bearing triterpenoids and revealed a range of novel promising therapeutic targets to control pathological neovascularization.
Collapse
|
2
|
Aggarwal N, Yadav J, Chhakara S, Janjua D, Tripathi T, Chaudhary A, Chhokar A, Thakur K, Singh T, Bharti AC. Phytochemicals as Potential Chemopreventive and Chemotherapeutic Agents for Emerging Human Papillomavirus-Driven Head and Neck Cancer: Current Evidence and Future Prospects. Front Pharmacol 2021; 12:699044. [PMID: 34354591 PMCID: PMC8329252 DOI: 10.3389/fphar.2021.699044] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 06/17/2021] [Indexed: 12/20/2022] Open
Abstract
Head and neck cancer (HNC) usually arises from squamous cells of the upper aerodigestive tract that line the mucosal surface in the head and neck region. In India, HNC is common in males, and it is the sixth most common cancer globally. Conventionally, HNC attributes to the use of alcohol or chewing tobacco. Over the past four decades, portions of human papillomavirus (HPV)-positive HNC are increasing at an alarming rate. Identification based on the etiological factors and molecular signatures demonstrates that these neoplastic lesions belong to a distinct category that differs in pathological characteristics and therapeutic response. Slow development in HNC therapeutics has resulted in a low 5-year survival rate in the last two decades. Interestingly, HPV-positive HNC has shown better outcomes following conservative treatments and immunotherapies. This raises demand to have a pre-therapy assessment of HPV status to decide the treatment strategy. Moreover, there is no HPV-specific treatment for HPV-positive HNC patients. Accumulating evidence suggests that phytochemicals are promising leads against HNC and show potential as adjuvants to chemoradiotherapy in HNC. However, only a few of these phytochemicals target HPV. The aim of the present article was to collate data on various leading phytochemicals that have shown promising results in the prevention and treatment of HNC in general and HPV-driven HNC. The review explores the possibility of using these leads against HPV-positive tumors as some of the signaling pathways are common. The review also addresses various challenges in the field that prevent their use in clinical settings.
Collapse
Affiliation(s)
- Nikita Aggarwal
- Molecular Oncology Laboratory, Department of Zoology, Faculty of Science, University of Delhi, Delhi, India
| | - Joni Yadav
- Molecular Oncology Laboratory, Department of Zoology, Faculty of Science, University of Delhi, Delhi, India
| | - Suhail Chhakara
- Molecular Oncology Laboratory, Department of Zoology, Faculty of Science, University of Delhi, Delhi, India
| | - Divya Janjua
- Molecular Oncology Laboratory, Department of Zoology, Faculty of Science, University of Delhi, Delhi, India
| | - Tanya Tripathi
- Molecular Oncology Laboratory, Department of Zoology, Faculty of Science, University of Delhi, Delhi, India
| | - Apoorva Chaudhary
- Molecular Oncology Laboratory, Department of Zoology, Faculty of Science, University of Delhi, Delhi, India
| | - Arun Chhokar
- Molecular Oncology Laboratory, Department of Zoology, Faculty of Science, University of Delhi, Delhi, India
| | - Kulbhushan Thakur
- Molecular Oncology Laboratory, Department of Zoology, Faculty of Science, University of Delhi, Delhi, India
| | - Tejveer Singh
- Molecular Oncology Laboratory, Department of Zoology, Faculty of Science, University of Delhi, Delhi, India
| | - Alok Chandra Bharti
- Molecular Oncology Laboratory, Department of Zoology, Faculty of Science, University of Delhi, Delhi, India
| |
Collapse
|
3
|
Siracusa R, D’Amico R, Cordaro M, Peritore AF, Genovese T, Gugliandolo E, Crupi R, Impellizzeri D, Cuzzocrea S, Fusco R, Di Paola R. The Methyl Ester of 2-Cyano-3,12-Dioxooleana-1,9-Dien-28-Oic Acid Reduces Endometrial Lesions Development by Modulating the NFkB and Nrf2 Pathways. Int J Mol Sci 2021; 22:3991. [PMID: 33924360 PMCID: PMC8069675 DOI: 10.3390/ijms22083991] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 04/05/2021] [Accepted: 04/11/2021] [Indexed: 12/11/2022] Open
Abstract
Endometriosis is a common gynecological disease. Here, we aimed to investigate the anti-fibrotic, anti-inflammatory, and anti-oxidative role of the methyl ester of 2-cyano-3,12-dioxooleana-1,9-dien-28-oic acid (CDDO-Me) on endometriosis. An endometriosis rat model was constructed by intraperitoneally injecting recipient rats with an equivalent of tissue from the uterus of a donor animal. Endometriosis was allowed to develop for seven days. CDDO-Me was administered on the 7th day and for the next 7 days. On day 14, rats were sacrificed, and peritoneal fluid and endometriotic implants were collected. CDDO-Me displayed antioxidant activity by activating the Nfr2 pathway and the expression of antioxidant mediators such as NQO-1 and HO-1. Moreover, it reduced lipid peroxidation and increased glutathione (GSH) levels and superoxide dismutase (SOD) activity. CDDO-Me also showed anti-inflammatory activity by decreasing the expression of pro-inflammatory cytokines in peritoneal fluids and NFkB activation. It, in turn, reduced cyclooxygenase-2 (COX-2) expression in the endometriotic loci and prostaglandin E2 (PGE2) levels in the peritoneal fluids, leading to increased apoptosis and reduced angiogenesis. The reduced oxidative stress and pro-inflammatory microenvironment decreased implants diameter, area, and volume. In particular, CDDO-Me administration reduced the histopathological signs of endometriosis and inflammatory cells recruitment into the lesions, as shown by toluidine blue staining and myeloperoxidase (MPO) activity. CDDO-Me strongly suppressed α-SMA and fibronectin expression and collagen deposition, reducing endometriosis-associated fibrosis. In conclusion, CDDO-Me treatment resulted in a coordinated and effective suppression of endometriosis by modulating the Nrf2 and NFkB pathways.
Collapse
Affiliation(s)
- Rosalba Siracusa
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166 Messina, Italy; (R.S.); (R.D.); (A.F.P.); (T.G.); (R.F.); (R.D.P.)
| | - Ramona D’Amico
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166 Messina, Italy; (R.S.); (R.D.); (A.F.P.); (T.G.); (R.F.); (R.D.P.)
| | - Marika Cordaro
- Department of Biomedical, Dental and Morphological and Functional Imaging, University of Messina, Via Consolare Valeria, 98125 Messina, Italy;
| | - Alessio Filippo Peritore
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166 Messina, Italy; (R.S.); (R.D.); (A.F.P.); (T.G.); (R.F.); (R.D.P.)
| | - Tiziana Genovese
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166 Messina, Italy; (R.S.); (R.D.); (A.F.P.); (T.G.); (R.F.); (R.D.P.)
| | - Enrico Gugliandolo
- Department of Veterinary Sciences, University of Messina, 98168 Messina, Italy; (E.G.); (R.C.)
| | - Rosalia Crupi
- Department of Veterinary Sciences, University of Messina, 98168 Messina, Italy; (E.G.); (R.C.)
| | - Daniela Impellizzeri
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166 Messina, Italy; (R.S.); (R.D.); (A.F.P.); (T.G.); (R.F.); (R.D.P.)
| | - Salvatore Cuzzocrea
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166 Messina, Italy; (R.S.); (R.D.); (A.F.P.); (T.G.); (R.F.); (R.D.P.)
| | - Roberta Fusco
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166 Messina, Italy; (R.S.); (R.D.); (A.F.P.); (T.G.); (R.F.); (R.D.P.)
| | - Rosanna Di Paola
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166 Messina, Italy; (R.S.); (R.D.); (A.F.P.); (T.G.); (R.F.); (R.D.P.)
| |
Collapse
|
4
|
Macașoi I, Pavel IZ, Moacă AE, Avram Ș, David VL, Coricovac D, Mioc A, Spandidos DA, Tsatsakis A, Șoica C, Dumitrașcu V, Dehelean C. Mechanistic investigations of antitumor activity of a Rhodamine B‑oleanolic acid derivative bioconjugate. Oncol Rep 2020; 44:1169-1183. [PMID: 32705265 PMCID: PMC7388574 DOI: 10.3892/or.2020.7666] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 06/23/2020] [Indexed: 12/14/2022] Open
Abstract
Cancer remains a major health problem worldwide due to its high mortality rate. New therapeutic options highlight the importance of discovering new compounds that target the tumor microenvironment, interrupt angiogenesis and act selectively. The present study assessed the antitumor effect and investigated the mechanism of action of a rhodamine B-conjugated oleanolic acid derivative (RhodOA). Consequently, the compound was tested on different human tumor cell lines (A375 melanoma, A549 lung adenocarcinoma and MDA-MB-231 breast adenocarcinoma) and on a non-tumor cell line HaCaT human keratinocyte. RhodOA produced a dose-dependent decrease in tumor cell viability especially in the melanoma cells while affecting the keratinocytes less. In melanoma cells, RhodOA reduced cell migration and produced condensation of cell nuclei and of actin fibers. Furthermore, an impairment in melanoma cell mitochondrial function was observed, while the mitochondrial function of keratinocytes was left intact. In the in ovo chorioallantoic membrane model, RhodOA elicited antiangiogenic effect, without showing irritation effect on the membrane. The study provides information on the selective antitumor effect of the derivative and its ability to inhibit cellular respiration, therefore RhodOA can be classified as ‘MITOCAN’.
Collapse
Affiliation(s)
- Ioana Macașoi
- Department of Toxicology and Drug Industry, Faculty of Pharmacy, 'Victor Babes', University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Ioana Zinuca Pavel
- Department of Pharmacognosy, Faculty of Pharmacy, 'Victor Babes', University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Alina Elena Moacă
- Department of Toxicology and Drug Industry, Faculty of Pharmacy, 'Victor Babes', University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Ștefana Avram
- Department of Pharmacognosy, Faculty of Pharmacy, 'Victor Babes', University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Vlad Laurențiu David
- Department of Pediatric Surgery and Orthopedics, Faculty of Medicine, 'Victor Babes', University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Dorina Coricovac
- Department of Toxicology and Drug Industry, Faculty of Pharmacy, 'Victor Babes', University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Alexandra Mioc
- Department of Anatomy, Physiology and Pathophysiology, Faculty of Pharmacy, 'Victor Babes', University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Demetrios A Spandidos
- Laboratory of Clinical Virology, Medical School, University of Crete, 70013 Heraklion, Greece
| | - Aristidis Tsatsakis
- Department of Forensic Sciences and Toxicology, Faculty of Medicine, University of Crete, 71003 Heraklion, Greece
| | - Codruța Șoica
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, 'Victor Babes', University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Victor Dumitrașcu
- Department of Pharmacology, Faculty of Medicine, 'Victor Babes', University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Cristina Dehelean
- Department of Toxicology and Drug Industry, Faculty of Pharmacy, 'Victor Babes', University of Medicine and Pharmacy, 300041 Timisoara, Romania
| |
Collapse
|
5
|
Abstract
Covering: up to 2020The transcription factor NRF2 is one of the body's major defense mechanisms, driving transcription of >300 antioxidant response element (ARE)-regulated genes that are involved in many critical cellular processes including redox regulation, proteostasis, xenobiotic detoxification, and primary metabolism. The transcription factor NRF2 and natural products have an intimately entwined history, as the discovery of NRF2 and much of its rich biology were revealed using natural products both intentionally and unintentionally. In addition, in the last decade a more sinister aspect of NRF2 biology has been revealed. NRF2 is normally present at very low cellular levels and only activated when needed, however, it has been recently revealed that chronic, high levels of NRF2 can lead to diseases such as diabetes and cancer, and may play a role in other diseases. Again, this "dark side" of NRF2 was revealed and studied largely using a natural product, the quassinoid, brusatol. In the present review, we provide an overview of NRF2 structure and function to orient the general reader, we will discuss the history of NRF2 and NRF2-activating compounds and the biology these have revealed, and we will delve into the dark side of NRF2 and contemporary issues related to the dark side biology and the role of natural products in dissecting this biology.
Collapse
Affiliation(s)
- Donna D Zhang
- Department of Pharmacology and Toxicology, College of Pharmacy, The University of Arizona, Tucson, AZ 85721, USA.
| | | |
Collapse
|
6
|
Bailly C. Anticancer properties of Prunus mume extracts (Chinese plum, Japanese apricot). JOURNAL OF ETHNOPHARMACOLOGY 2020; 246:112215. [PMID: 31491438 DOI: 10.1016/j.jep.2019.112215] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 08/30/2019] [Accepted: 09/02/2019] [Indexed: 05/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Extracts of the fruit of Prunus mume (Rosaceae) have been used for a long time in Eastern Asia, in many culinary and medicinal preparations. The plant originates from the south of mainland China (named méi) and was introduced later in Japan (ume), Korea (maesil) and Vietnam (mai or mo). Extracts of the fruits (Chinese plum or Japanese apricot, 'Nanko' mume cultivar of Prunus mume Sieb. et Zucc.) are used in traditional Chinese and Japanese medicine, and various Korean medical preparations, for more than 2000 years. The medicinal use of the flesh of the fruits is cited in ancient Japanese monographies (such as Shokokukodenhiho published in 1817). AIM OF THE STUDY To analyze the anticancer activities of P. mume extracts and their potential use to prevent or treat cancers. The use of P. mume extracts to alleviate the side effects of chemotherapy, notably drug-induced gastro-intestinal toxicities, is also reviewed. METHODS Extensive database retrieval, such as SciFinder and PubMed, was performed by using keywords such as "Prunus mume", "Chinese plum", "Japanese apricot", and "cancer". In addition, relevant textbooks, patents, reviews, and digital documents (in English) were consulted to collate all available scientific literature and to provide a complete science-based survey of the topic. RESULTS P. mume extracts display hepatoprotective, anti-inflammatory, antioxidative and antibacterial effects, as well as anticancer properties. A survey of the antitumor activities of MK615 and other P. mume extracts is provided here, with information about the natural products found in the extracts (such as ursolic acid and oleanic acid) and the mechanisms of action of these extracts. MK615 inhibits proliferation and induces apoptotic death of different types of cancer cells from both solid and hematological tumors. CONCLUSION The pool of in vitro data and signs of anticancer activities in mice models and in Human, although very limited, support the use of this extract to treat cancer, notably gastro-intestinal tumors. However, more robust evidence of anticancer activity in Human are awaited. Beyond cancer treatment, the use of P. mume extracts to prevent or to treat mucositis and other gastro-intestinal damages induced by anticancer drugs is underlined. The woody plant Prunus mume, a member of the Rosaceae family, has a long plantation history in China, and has widely been planted in Asia due to its high ornamental value (colorful corollas, pleasant fragrance, weeping trait) and the culinary, nutritional and medicinal potential of the fruits from the specie Prunus mume Sieb. et Zucc (Mei). Over the past 20 years the therapeutic potential of the extract of Japanese apricot "Ume" has been regularly reported. Anti-bacterial, anti-oxidative, anti-inflammatory and anti-cancer properties have been described. A complete analysis of the published scientific literature on Ume and cancer is presented here.
Collapse
|
7
|
Iqbal M, Fan TP, Watson D, Alenezi S, Saleh K, Sahlan M. Preliminary studies: the potential anti-angiogenic activities of two Sulawesi Island (Indonesia) propolis and their chemical characterization. Heliyon 2019; 5:e01978. [PMID: 31372523 PMCID: PMC6656927 DOI: 10.1016/j.heliyon.2019.e01978] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 04/23/2019] [Accepted: 06/17/2019] [Indexed: 12/14/2022] Open
Abstract
Several studies have previously reported propolis, or its constituents, to inhibit tumour angiogenesis. The anti-angiogenic activity of two Indonesian stingless bee propolis extracts from Sulawesi Island on vascular cells were assessed. Sample D01 was obtained from the outer side of bee hives, while D02 was from the inner side of the same hives. The extracts were profiled by using liquid chromatography coupled to high resolution mass spectrometry. The anti-angiogenic capacity was assessed on HUVECs and placenta-derived pericytes by cell viability, multi-channel wound healing, and CoCl2 based-hypoxia assays. The exact chemical composition has not been confirmed. The most abundant compounds in Indonesian sample D01 seem to be unusual since they do not immediately fall into a clear class. Two of the most abundant compounds have elemental compositions matching actinopyrones. Identification on the basis of elemental composition is not definitive but compounds in D01 are possibly due to unusually modified terpenoids. Sample D02 has abundant compounds which include four related diterpenes with differing degrees of oxygenation and some sesquiterpenes. However, again the profile is unusual. The anti-angiogenic assays demonstrated that D01 elicited a strong cytotoxic effect and a considerable anti-migratory activity on the vascular cells. Although D02 demonstrated a much weaker cytotoxic effect on the cell lines compared to D01, it elicited a substantial protective effect on the pericytes against CoCl2-induced dropout in an experiment to mimic a micro-environment commonly associated with angiogenesis and tumour growth. These results demonstrate modulatory effects of these propolis samples in vascular cells, which requires further investigation.
Collapse
Affiliation(s)
- Muhammad Iqbal
- Department of Pharmacology, University of Cambridge, Cambridge, United Kingdom
| | - Tai-Ping Fan
- Department of Pharmacology, University of Cambridge, Cambridge, United Kingdom
| | - David Watson
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, United Kingdom
| | - Samya Alenezi
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, United Kingdom
| | - Khaled Saleh
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, United Kingdom
| | - Muhamad Sahlan
- Department of Chemical Engineering, Universitas Indonesia, Depok, Indonesia
| |
Collapse
|
8
|
Markov AV, Sen’kova AV, Zenkova MA, Logashenko EB. Novel Glycyrrhetinic Acid Derivative Soloxolone Methyl Inhibits the Inflammatory Response and Tumor Growth in vivo. Mol Biol 2018. [DOI: 10.1134/s0026893318020073] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
9
|
Gallo C, Dallaglio K, Bassani B, Rossi T, Rossello A, Noonan DM, D'Uva G, Bruno A, Albini A. Hop derived flavonoid xanthohumol inhibits endothelial cell functions via AMPK activation. Oncotarget 2018; 7:59917-59931. [PMID: 27494895 PMCID: PMC5312358 DOI: 10.18632/oncotarget.10990] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2016] [Accepted: 06/06/2016] [Indexed: 12/25/2022] Open
Abstract
Angiogenesis, a process characterized by the formation of new blood vessels from pre-existing ones, is a crucial step in tumor growth and dissemination. Recently, increased attention has been addressed to the ability of flavonoids to prevent cancer by suppressing angiogenesis, strategy that we named "angioprevention". Several natural compounds exert their anti-tumor properties by activating 5' adenosine monophosphate-activated protein kinase (AMPK), a key regulator of metabolism in cancer cells. Drugs with angiopreventive activities, in particular metformin, regulate AMPK in endothelial cells. Here we investigated the involvement of AMPK in the anti-angiogenic effects of xanthohumol (XN), the major prenylated flavonoid of the hop plant, and mechanisms of action. The anti-angiogenic activity of XN was more potent than epigallocatechin-3-gallate (EGCG). Treatment of endothelial cells with XN led to increased AMPK phosphorylation and activity. Functional studies using biochemical approaches confirmed that AMPK mediates XN anti-angiogenic activity. AMPK activation by XN was mediated by CAMMKβ, but not LKB1. Analysis of the downstream mechanisms showed that XN-induced AMPK activation reduced nitric oxide (NO) levels in endothelial cells by decreasing eNOS phosphorylation. Finally, AKT pathway was inactivated by XN as part of its anti-angiogenic activity, but independently from AMPK, suggesting that these two signaling pathways proceed autonomously. Our study dissects the molecular mechanism by which XN exerts its potent anti-angiogenic activity, pointing out AMPK as a crucial signal transducer.
Collapse
Affiliation(s)
- Cristina Gallo
- IRCCS "Istituto in Tecnologie Avanzate e Modelli Assistenziali in Oncologia" Arcispedale S. Maria Nuova, Reggio Emilia, Italy
| | - Katiuscia Dallaglio
- IRCCS "Istituto in Tecnologie Avanzate e Modelli Assistenziali in Oncologia" Arcispedale S. Maria Nuova, Reggio Emilia, Italy
| | - Barbara Bassani
- Scientific and Technology Pole, IRCCS MultiMedica, Milan, Italy
| | - Teresa Rossi
- IRCCS "Istituto in Tecnologie Avanzate e Modelli Assistenziali in Oncologia" Arcispedale S. Maria Nuova, Reggio Emilia, Italy
| | | | - Douglas M Noonan
- Department of Biotechnologies and Life Sciencies, University of Insubria, Varese, Italy
| | - Gabriele D'Uva
- Scientific and Technology Pole, IRCCS MultiMedica, Milan, Italy
| | - Antonino Bruno
- Scientific and Technology Pole, IRCCS MultiMedica, Milan, Italy
| | - Adriana Albini
- Scientific and Technology Pole, IRCCS MultiMedica, Milan, Italy
| |
Collapse
|
10
|
Cancer chemoprevention revisited: Cytochrome P450 family 1B1 as a target in the tumor and the microenvironment. Cancer Treat Rev 2017; 63:1-18. [PMID: 29197745 DOI: 10.1016/j.ctrv.2017.10.013] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 10/30/2017] [Accepted: 10/31/2017] [Indexed: 02/08/2023]
Abstract
Cancer chemoprevention is the use of synthetic, natural or biological agents to prevent or delay the development or progression of malignancies. Intriguingly, many phytochemicals with anti-inflammatory and anti-angiogenic effects, recently proposed as chemoprevention strategies, are inhibitors of Cytochrome P450 family 1B1 (CYP1B1), an enzyme overexpressed in a wide variety of tumors and associated with angiogenesis. In turn, pro-inflammatory cytokines were reported to boost CYP1B1 expression, suggesting a key role of CYP1B1 in a positive loop of inflammatory angiogenesis. Other well-known pro-tumorigenic activities of CYP1B1 rely on metabolic bioactivation of xenobiotics and steroid hormones into their carcinogenic derivatives. In contrast to initial in vitro observations, in vivo studies demonstrated a protecting role against cancer for the other CYP1 family members (CYP1A1 and CYP1A2), suggesting that the specificity of CYP1 family inhibitors should be carefully taken into account for developing potential chemoprevention strategies. Recent studies also proposed a role of CYP1B1 in multiple cell types found within the tumor microenvironment, including fibroblasts, endothelial and immune cells. Overall, our review of the current literature suggests a positive loop between inflammatory cytokines and CYP1B1, which in turn may play a key role in cancer angiogenesis, acting on both cancer cells and the tumor microenvironment. Strategies aiming at specific CYP1B1 inhibition in multiple cell types may translate into clinical chemoprevention and angioprevention approaches.
Collapse
|
11
|
Maslinic Acid Inhibits Proliferation of Renal Cell Carcinoma Cell Lines and Suppresses Angiogenesis of Endothelial Cells. J Kidney Cancer VHL 2017; 4:16-24. [PMID: 28405545 PMCID: PMC5364332 DOI: 10.15586/jkcvhl.2017.64] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Accepted: 02/27/2017] [Indexed: 12/12/2022] Open
Abstract
Despite the introduction of many novel therapeutics in clinical practice, metastatic renal cell carcinoma (RCC) remains a treatment-resistant cancer. As red and processed meat are considered risk factors for RCC, and a vegetable-rich diet is thought to reduce this risk, research into plant-based therapeutics may provide valuable complementary or alternative therapeutics for the management of RCC. Herein, we present the antiproliferative and antiangiogenic effects of maslinic acid, which occurs naturally in edible plants, particularly in olive fruits, and also in a variety of medicinal plants. Human RCC cell lines (ACHN, Caki-1, and SN12K1), endothelial cells (human umbilical vein endothelial cell line [HUVEC]), and primary cultures of kidney proximal tubular epithelial cells (PTEC) were treated with maslinic acid. Maslinic acid was relatively less toxic to PTEC when compared with RCC under similar experimental conditions. In RCC cell lines, maslinic acid induced a significant reduction in proliferation, proliferating cell nuclear antigen, and colony formation. In HUVEC, maslinic acid induced a significant reduction in capillary tube formation in vitro and vascular endothelial growth factor. This study provides a rationale for incorporating a maslinic acid–rich diet either to reduce the risk of developing kidney cancer or as an adjunct to existing antiangiogenic therapy to improve efficacy.
Collapse
|
12
|
Babosova R, Duranova H, Omelka R, Kovacova V, Adamkovicova M, Grosskopf B, Capcarova M, Martiniakova M. Structural changes in femoral bone microstructure of female rabbits after intramuscular administration of quercetin. Acta Vet Scand 2016; 58:43. [PMID: 27357122 PMCID: PMC4928257 DOI: 10.1186/s13028-016-0225-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Accepted: 06/17/2016] [Indexed: 12/29/2022] Open
Abstract
Background Quercetin is one of the best known flavonoids being present in a variety of fruits and vegetables. It has cardioprotective, anticarcinogenic, antioxidant, anti-inflammatory and antiapoptotic properties. Some studies suggest that quercetin has protective effects on bone. However, its influence on qualitative and quantitative histological characteristics of compact bone is still unknown. In our study, 12 clinically healthy five-month-old female rabbits were divided into four groups of three animals each. Quercetin was applied intramuscularly in various concentrations; 10 µg/kg body weight (bw) in the E1 group, 100 µg/kg bw in the E2 group, and 1000 µg/kg bw in the E3 group for 90 days, 3 times per week. Three rabbits without exposure to quercetin served as a control (C) group. Differences in femoral bone microstructure among groups were evaluated. Results Qualitative histological characteristics of compact bone differed between rabbits from the E1 and E2 groups. Primary vascular longitudinal bone tissue was not found in some areas near the endosteal surface due to increased endocortical bone resorption. In addition, periosteal border of rabbits from the E1 group was composed of a thicker layer of primary vascular longitudinal bone tissue than in the other groups. In all groups of rabbits administered quercetin, a lower density of secondary osteons was observed. Histomorphometrical evaluations showed significantly decreased sizes of the primary osteons’ vascular canals in individuals from the E1 and E2 groups. Secondary osteons were significantly smaller in rabbits from the E1, E2, E3 groups when compared to the C group. Cortical bone thickness was significantly increased in females from the E1 and E2 groups. Conclusions The results indicate that quercetin has not only a positive dose–response on qualitative and quantitative histological characteristics of the compact bone of female rabbits as it would be expected.
Collapse
|
13
|
Zhao CH, Zhang CL, Shi JJ, Hou XY, Feng B, Zhao LX. Design, synthesis, and biofunctional evaluation of novel pentacyclic triterpenes bearing O-[4-(1-piperazinyl)-4-oxo-butyryl moiety as antiproliferative agents. Bioorg Med Chem Lett 2015; 25:4500-4. [DOI: 10.1016/j.bmcl.2015.08.076] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Revised: 08/06/2015] [Accepted: 08/28/2015] [Indexed: 01/11/2023]
|
14
|
Blumenthal SS. Evolution of Treatment for Diabetic Nephropathy: Historical Progression from RAAS Inhibition and Onward. Postgrad Med 2015; 123:166-79. [DOI: 10.3810/pgm.2011.11.2506] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
15
|
Wang Z, Dabrosin C, Yin X, Fuster MM, Arreola A, Rathmell WK, Generali D, Nagaraju GP, El-Rayes B, Ribatti D, Chen YC, Honoki K, Fujii H, Georgakilas AG, Nowsheen S, Amedei A, Niccolai E, Amin A, Ashraf SS, Helferich B, Yang X, Guha G, Bhakta D, Ciriolo MR, Aquilano K, Chen S, Halicka D, Mohammed SI, Azmi AS, Bilsland A, Keith WN, Jensen LD. Broad targeting of angiogenesis for cancer prevention and therapy. Semin Cancer Biol 2015; 35 Suppl:S224-S243. [PMID: 25600295 PMCID: PMC4737670 DOI: 10.1016/j.semcancer.2015.01.001] [Citation(s) in RCA: 318] [Impact Index Per Article: 35.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Revised: 12/25/2014] [Accepted: 01/08/2015] [Indexed: 12/20/2022]
Abstract
Deregulation of angiogenesis – the growth of new blood vessels from an existing vasculature – is a main driving force in many severe human diseases including cancer. As such, tumor angiogenesis is important for delivering oxygen and nutrients to growing tumors, and therefore considered an essential pathologic feature of cancer, while also playing a key role in enabling other aspects of tumor pathology such as metabolic deregulation and tumor dissemination/metastasis. Recently, inhibition of tumor angiogenesis has become a clinical anti-cancer strategy in line with chemotherapy, radiotherapy and surgery, which underscore the critical importance of the angiogenic switch during early tumor development. Unfortunately the clinically approved anti-angiogenic drugs in use today are only effective in a subset of the patients, and many who initially respond develop resistance over time. Also, some of the anti-angiogenic drugs are toxic and it would be of great importance to identify alternative compounds, which could overcome these drawbacks and limitations of the currently available therapy. Finding “the most important target” may, however, prove a very challenging approach as the tumor environment is highly diverse, consisting of many different cell types, all of which may contribute to tumor angiogenesis. Furthermore, the tumor cells themselves are genetically unstable, leading to a progressive increase in the number of different angiogenic factors produced as the cancer progresses to advanced stages. As an alternative approach to targeted therapy, options to broadly interfere with angiogenic signals by a mixture of non-toxic natural compound with pleiotropic actions were viewed by this team as an opportunity to develop a complementary anti-angiogenesis treatment option. As a part of the “Halifax Project” within the “Getting to know cancer” framework, we have here, based on a thorough review of the literature, identified 10 important aspects of tumor angiogenesis and the pathological tumor vasculature which would be well suited as targets for anti-angiogenic therapy: (1) endothelial cell migration/tip cell formation, (2) structural abnormalities of tumor vessels, (3) hypoxia, (4) lymphangiogenesis, (5) elevated interstitial fluid pressure, (6) poor perfusion, (7) disrupted circadian rhythms, (8) tumor promoting inflammation, (9) tumor promoting fibroblasts and (10) tumor cell metabolism/acidosis. Following this analysis, we scrutinized the available literature on broadly acting anti-angiogenic natural products, with a focus on finding qualitative information on phytochemicals which could inhibit these targets and came up with 10 prototypical phytochemical compounds: (1) oleanolic acid, (2) tripterine, (3) silibinin, (4) curcumin, (5) epigallocatechin-gallate, (6) kaempferol, (7) melatonin, (8) enterolactone, (9) withaferin A and (10) resveratrol. We suggest that these plant-derived compounds could be combined to constitute a broader acting and more effective inhibitory cocktail at doses that would not be likely to cause excessive toxicity. All the targets and phytochemical approaches were further cross-validated against their effects on other essential tumorigenic pathways (based on the “hallmarks” of cancer) in order to discover possible synergies or potentially harmful interactions, and were found to generally also have positive involvement in/effects on these other aspects of tumor biology. The aim is that this discussion could lead to the selection of combinations of such anti-angiogenic compounds which could be used in potent anti-tumor cocktails, for enhanced therapeutic efficacy, reduced toxicity and circumvention of single-agent anti-angiogenic resistance, as well as for possible use in primary or secondary cancer prevention strategies.
Collapse
Affiliation(s)
- Zongwei Wang
- Department of Urology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
| | - Charlotta Dabrosin
- Department of Oncology, Linköping University, Linköping, Sweden; Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Xin Yin
- Medicine and Research Services, Veterans Affairs San Diego Healthcare System & University of California, San Diego, San Diego, CA, USA
| | - Mark M Fuster
- Medicine and Research Services, Veterans Affairs San Diego Healthcare System & University of California, San Diego, San Diego, CA, USA
| | - Alexandra Arreola
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC, USA
| | - W Kimryn Rathmell
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC, USA
| | - Daniele Generali
- Molecular Therapy and Pharmacogenomics Unit, AO Isituti Ospitalieri di Cremona, Cremona, Italy
| | - Ganji P Nagaraju
- Department of Hematology and Medical Oncology, Emory University, Atlanta, GA, USA
| | - Bassel El-Rayes
- Department of Hematology and Medical Oncology, Emory University, Atlanta, GA, USA
| | - Domenico Ribatti
- Department of Basic Medical Sciences, Neurosciences and Sensory Organs, University of Bari Medical School, Bari, Italy; National Cancer Institute Giovanni Paolo II, Bari, Italy
| | - Yi Charlie Chen
- Department of Biology, Alderson Broaddus University, Philippi, WV, USA
| | - Kanya Honoki
- Department of Orthopedic Surgery, Arthroplasty and Regenerative Medicine, Nara Medical University, Nara, Japan
| | - Hiromasa Fujii
- Department of Orthopedic Surgery, Arthroplasty and Regenerative Medicine, Nara Medical University, Nara, Japan
| | - Alexandros G Georgakilas
- Physics Department, School of Applied Mathematics and Physical Sciences, National Technical University of Athens, Athens, Greece
| | - Somaira Nowsheen
- Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - Amedeo Amedei
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Elena Niccolai
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Amr Amin
- Department of Biology, College of Science, United Arab Emirate University, United Arab Emirates; Faculty of Science, Cairo University, Cairo, Egypt
| | - S Salman Ashraf
- Department of Chemistry, College of Science, United Arab Emirate University, United Arab Emirates
| | - Bill Helferich
- University of Illinois at Urbana Champaign, Urbana, IL, USA
| | - Xujuan Yang
- University of Illinois at Urbana Champaign, Urbana, IL, USA
| | - Gunjan Guha
- School of Chemical and Bio Technology, SASTRA University, Thanjavur, India
| | - Dipita Bhakta
- School of Chemical and Bio Technology, SASTRA University, Thanjavur, India
| | | | - Katia Aquilano
- Department of Biology, University of Rome "Tor Vergata", Rome, Italy
| | - Sophie Chen
- Ovarian and Prostate Cancer Research Trust Laboratory, Guilford, Surrey, UK
| | | | - Sulma I Mohammed
- Department of Comparative Pathobiology, Purdue University Center for Cancer Research, West Lafayette, IN, USA
| | - Asfar S Azmi
- School of Medicine, Wayne State University, Detroit, MI, USA
| | - Alan Bilsland
- Institute of Cancer Sciences, University of Glasgow, Glasgow, UK
| | - W Nicol Keith
- Institute of Cancer Sciences, University of Glasgow, Glasgow, UK
| | - Lasse D Jensen
- Department of Medical, and Health Sciences, Linköping University, Linköping, Sweden; Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden.
| |
Collapse
|
16
|
Parikh NR, Mandal A, Bhatia D, Siveen KS, Sethi G, Bishayee A. Oleanane triterpenoids in the prevention and therapy of breast cancer: current evidence and future perspectives. PHYTOCHEMISTRY REVIEWS : PROCEEDINGS OF THE PHYTOCHEMICAL SOCIETY OF EUROPE 2014; 13:793-810. [PMID: 25395898 PMCID: PMC4225818 DOI: 10.1007/s11101-014-9337-5] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Breast cancer is one of the most frequently diagnosed cancers and major cause of death in women in the world. Emerging evidence underscores the value of dietary and non-dietary phytochemicals, including triterpenoids, in the prevention and treatment of breast cancer. Oleanolic acid, an oleanane-type pentacyclic triterpenoid, is present in a large number of dietary and medicinal plants. Oleanolic acid and its derivatives exhibit several promising pharmacological activities, including antioxidant, anti-inflammatory, hepatoprotective, cardioprotective, antipruritic, spasmolytic, antiallergic, antimicrobial and antiviral effects. Numerous studies indicate that oleanolic acid and other oleanane triterpenoids modulate multiple intracellular signaling pathways and exert chemopreventive and antitumor activities in various in vitro and in vivo model systems. A series of novel synthetic oleanane triterpenoids have been prepared by chemical modifications of oleanolic acid and some of these compounds are considered to be the most potent anti-inflammatory and anticarcinogenic triterpenoids. Accumulating studies provide extensive evidence that synthetic oleanane derivatives inhibit proliferation and induce apoptosis of various cancer cells in vitro and demonstrate cancer preventive or antitumor efficacy in animal models of blood, breast, colon, connective tissue, liver, lung, pancreas, prostate and skin cancer. This review critically examines the potential role of oleanolic acid, oleanane triterpenoids and related synthetic compounds in the chemoprevention and treatment of mammary neoplasia. Both in vitro and in vivo studies on these agents and related molecular mechanisms are presented. Several challenges and future directions of research to translate already available impressive preclinical knowledge to clinical practice of breast cancer prevention and therapy are also presented.
Collapse
Affiliation(s)
- Nisha R. Parikh
- Department of Pharmaceutical Sciences, School of Pharmacy, American University of Health Sciences, Signal Hill, CA 90755, USA
| | - Animesh Mandal
- Department of Pharmaceutical Sciences, College of Pharmacy, Northeast Ohio Medical University, Rootstown, OH 44272, USA
| | - Deepak Bhatia
- Department of Pharmaceutical Sciences, College of Pharmacy, Northeast Ohio Medical University, Rootstown, OH 44272, USA
| | - Kodappully Sivaraman Siveen
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore
| | - Gautam Sethi
- Department of Pharmacology, Yong Loo Lin School of Medicine, Cancer Science Institute of Singapore, National University of Singapore, Singapore 117597, Singapore
| | - Anupam Bishayee
- Department of Pharmaceutical Sciences, School of Pharmacy, American University of Health Sciences, Signal Hill, CA 90755, USA
| |
Collapse
|
17
|
Semi-synthesis of acylated triterpenes from olive-oil industry wastes for the development of anticancer and anti-HIV agents. Eur J Med Chem 2014; 74:278-301. [DOI: 10.1016/j.ejmech.2013.12.049] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2013] [Revised: 12/20/2013] [Accepted: 12/23/2013] [Indexed: 12/28/2022]
|
18
|
Sánchez-Quesada C, López-Biedma A, Warleta F, Campos M, Beltrán G, Gaforio JJ. Bioactive properties of the main triterpenes found in olives, virgin olive oil, and leaves of Olea europaea. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:12173-82. [PMID: 24279741 DOI: 10.1021/jf403154e] [Citation(s) in RCA: 102] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Oleanolic acid, maslinic acid, uvaol, and erythrodiol are the main triterpenes present in olives, olive tree leaves, and virgin olive oil. Their concentration in virgin olive oil depends on the quality of the olive oil and the variety of the olive tree. These triterpenes are described to present different properties, such as antitumoral activity, cardioprotective activity, anti-inflammatory activity, and antioxidant protection. Olive oil triterpenes are a natural source of antioxidants that could be useful compounds for the prevention of multiple diseases related to cell oxidative damage. However, special attention has to be paid to the concentrations used, because higher concentration may lead to cytotoxic or biphasic effects. This work explores all of the bioactive properties so far described for the main triterpenes present in virgin olive oil.
Collapse
Affiliation(s)
- Cristina Sánchez-Quesada
- Immunology Division, Department of Health Sciences, Faculty of Experimental Sciences, University of Jaén , Campus las Lagunillas s/n, 23071 Jaén, Spain
| | | | | | | | | | | |
Collapse
|
19
|
Zihlif M, Afifi F, Abu-Dahab R, Abdul Majid AMS, Somrain H, Saleh MM, Nassar ZD, Naffa R. The antiangiogenic activities of ethanolic crude extracts of four Salvia species. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 13:358. [PMID: 24330494 PMCID: PMC3878736 DOI: 10.1186/1472-6882-13-358] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/08/2013] [Accepted: 11/29/2013] [Indexed: 01/24/2023]
Abstract
Background Angiogenesis is one of cancer hallmarks that are required for both cancer progression and metastasis. In this study we examined the antiangiogenic properties of the ethanolic crude extracts of four Salvia species grown in Jordan. Methods The direct antiangiogenic activity was evaluated using various models: ex vivo rat aortic ring assay, in vitro assessment of HUVEC proliferation and migration, and in vivo CAM assay, while we used the changes in the expression of HIF-1α and VEGF in breast cancer cells (MCF 7) as an indicative for the indirect antiangiogenic activity. Results All four crude extracts showed a potential antiangiogenic activity in the rat aortic assay, however two species were found to be cytotoxic against Fibroblast cell line (PLF); the finding that caused the exclusion of these two extracts from further studies. Of the two remaining extracts, S. triloba showed very promising direct and indirect antiangiogenic activities. S. triloba inhibited the HUVEC proliferation with an IC50 of 90 μg/mL and HUVEC migration by 82% at 150 μg/mL. Furthermore, the in vivo CAM assay also illustrated the high impact of S. triloba against the newly formed vessel in the chicken embryonic membrane. Interestingly, the S. triloba inhibited the expression of VEGF at the mRNA and protein and the HIF-1α mRNA in the MCF 7 breast cancer cells under both normoxic and hypoxic conditions. Conclusions Taken together, all these findings of the direct and indirect angiogenic investigations nominated S. triloba as a highly potent antiangiogenic plant that may have chemotherapeutic and/or chemoprevention potentials.
Collapse
|
20
|
Aisha AFA, Ismail Z, Abu-Salah KM, Siddiqui JM, Ghafar G, Abdul Majid AMS. Syzygium campanulatum korth methanolic extract inhibits angiogenesis and tumor growth in nude mice. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 13:168. [PMID: 23842450 PMCID: PMC3717079 DOI: 10.1186/1472-6882-13-168] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2012] [Accepted: 06/10/2013] [Indexed: 11/10/2022]
Abstract
BACKGROUND Syzygium campanulatum Korth (Myrtaceae) is an evergreen shrub rich in phenolics, flavonoid antioxidants, and betulinic acid. This study sought to investigate antiangiogenic and anti-colon cancer effects of S.C. standardized methanolic extract. METHODS Betulinic acid was isolated from methanolic extract by crystallization and chromatography techniques. S.C. methanolic extract was analyzed by UV-Vis spectrophotometry, FTIR, LC-MS, and HPLC. Antiangiogenic effect was studied on rat aortic rings, matrigel tube formation, cell proliferation and migration, and expression of vascular endothelial growth factor (VEGF). Antitumor effect was studied using a subcutaneous tumor model of HCT 116 colorectal carcinoma cells established in nude mice. RESULTS Analysis by HPLC, LC-MS and FTIR confirm presence of betulinic acid in S.C. methanolic extract. Quantitative analysis by HPLC indicates presence of betulinic acid in S.C. extract at 5.42 ± 0.09% (w/w). Antiangiogenesis study showed potent inhibition of microvessels outgrowth in rat aortic rings, and studies on normal and cancer cells did not show any significant cytotoxic effect. Antiangiogenic effect was further confirmed by inhibition of tube formation on matrigel matrix that involves human endothelial cells (IC50 = 17.6 ± 2.9 μg/ml). S.C. extract also inhibited migration of endothelial cells and suppressed expression of VEGF. In vivo antiangiogenic study showed inhibition of new blood vessels in chicken embryo chorioallantoic membrane (CAM), and in vivo antitumor study showed significant inhibition of tumor growth due to reduction of intratumor blood vessels and induction of cell death. CONCLUSION Collectively, our results indicate S. campanulatum as antiangiogenic and antitumor candidate, and a new source of betulinic acid.
Collapse
|
21
|
3-O-Acetyloleanolic acid exhibits anti-angiogenic effects and induces apoptosis in human umbilical vein endothelial cells. Biotechnol Lett 2013; 35:1807-15. [DOI: 10.1007/s10529-013-1266-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2013] [Accepted: 06/07/2013] [Indexed: 01/11/2023]
|
22
|
Tang S, Gao D, Zhao T, Zhou J, Zhao X. An evaluation of the anti-tumor efficacy of oleanolic acid-loaded PEGylated liposomes. NANOTECHNOLOGY 2013; 24:235102. [PMID: 23670283 DOI: 10.1088/0957-4484/24/23/235102] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The effective delivery of oleanolic acid (OA) to the target site has several benefits in therapy for different pathologies. However, the delivery of OA is challenging due to its poor aqueous solubility. The study aims to evaluate the tumor inhibition effect of the PEGylated OA nanoliposome on the U14 cervical carcinoma cell line. In our previous study, OA was successfully encapsulated into PEGylated liposome with the modified ethanol injection method. Oral administration of PEGylated OA liposome was demonstrated to be more efficient in inhibiting xenograft tumors. The results of organ index indicated that PEG liposome exhibited higher anti-tumor activity and lower cytotoxicity. It was also found that OA and OA liposomes induced tumor cell apoptosis detected by flow cytometry. Furthermore, effects of OA on the morphology of tumor and other tissues were observed by hematoxylin and eosin staining. The histopathology sections did not show pathological changes in kidney or liver in tested mice. In contrast, there was a significant difference in tumor tissues between treatment groups and the negative control group. These observations imply that PEGylated liposomes seem to have advantages for cancer therapy in terms of effective delivery of OA.
Collapse
Affiliation(s)
- Shengnan Tang
- Applied Chemical Key Lab of Hebei Province, College of Environmental and Chemical Engineering, Yanshan University, No. 438 Hebei Street, Qinhuangdao 066004, People's Republic of China
| | | | | | | | | |
Collapse
|
23
|
The triterpenoid CDDO-Me inhibits bleomycin-induced lung inflammation and fibrosis. PLoS One 2013; 8:e63798. [PMID: 23741300 PMCID: PMC3669327 DOI: 10.1371/journal.pone.0063798] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Accepted: 04/06/2013] [Indexed: 02/06/2023] Open
Abstract
Pulmonary Fibrosis (PF) is a devastating progressive disease in which normal lung structure and function is compromised by scarring. Lung fibrosis can be caused by thoracic radiation, injury from chemotherapy and systemic diseases such as rheumatoid arthritis that involve inflammatory responses. CDDO-Me (Methyl 2-cyano-3,12-dioxooleana-1,9(11)dien-28-oate, Bardoxolone methyl) is a novel triterpenoid with anti-fibrotic and anti-inflammatory properties as shown by our in vitro studies. Based on this evidence, we hypothesized that CDDO-Me would reduce lung inflammation, fibrosis and lung function impairment in a bleomycin model of lung injury and fibrosis. To test this hypothesis, mice received bleomycin via oropharyngeal aspiration (OA) on day zero and CDDO-Me during the inflammatory phase from days -1 to 9 every other day. Bronchoalveolar lavage fluid (BALF) and lung tissue were harvested on day 7 to evaluate inflammation, while fibrosis and lung function were evaluated on day 21. On day 7, CDDO-Me reduced total BALF protein by 50%, alveolar macrophage infiltration by 40%, neutrophil infiltration by 90% (p≤0.01), inhibited production of the inflammatory cytokines KC and IL-6 by over 90% (p≤0.001), and excess production of the pro-fibrotic cytokine TGFβ by 50%. CDDO-Me also inhibited α-smooth muscle actin and fibronectin mRNA by 50% (p≤0.05). On day 21, CDDO-Me treatment reduced histological fibrosis, collagen deposition and αSMA production. Lung function was significantly improved at day 21 by treatment with CDDO-Me, as demonstrated by respiratory rate and dynamic compliance. These new findings reveal that CDDO-Me exhibits potent anti-fibrotic and anti-inflammatory properties in vivo. CDDO-Me is a potential new class of drugs to arrest inflammation and ameliorate fibrosis in patients who are predisposed to lung injury and fibrosis incited by cancer treatments (e.g. chemotherapy and radiation) and by systemic autoimmune diseases.
Collapse
|
24
|
Ng YP, Chen Y, Hu Y, Ip FCF, Ip NY. Olean-12-eno[2,3-c] [1,2,5]oxadiazol-28-oic acid (OEOA) induces G1 cell cycle arrest and differentiation in human leukemia cell lines. PLoS One 2013; 8:e63580. [PMID: 23696836 PMCID: PMC3656051 DOI: 10.1371/journal.pone.0063580] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Accepted: 04/04/2013] [Indexed: 01/01/2023] Open
Abstract
Oleanolic acid (3β-hydroxy-olea-12-en-28-oic acid) is a natural pentacyclic triterpenoic acid found in many fruits, herbs and medicinal plants. In the past decade, increasing evidence has suggested that oleanolic acid exhibits inhibitory activities against different types of cancer including skin cancer and colon cancer, but not leukemia. We report here that a derivative of oleanolic acid, olean-12-eno[2,3-c] [1], [2], [5]oxadiazol-28-oic acid (designated OEOA) effectively blocks the proliferation of human leukemia cells. OEOA significantly reduces cell proliferation without inducing cell death in three types of leukemia cell lines, including K562, HEL and Jurket. Moreover, exposure of K562 cells to OEOA results in G1 cell cycle arrest, with a concomitant induction of cyclin-dependent kinase inhibitor p27 and downregulation of cyclins and Cdks that are essential for cell cycle progression. Interestingly, OEOA also enhances erythroid differentiation in K562 cells through suppressing the expression of Bcr-Abl and phosphorylation of Erk1/2. These findings identify a novel chemical entity for further development as therapeutics against leukemia.
Collapse
Affiliation(s)
- Yu Pong Ng
- Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
- State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Yuewen Chen
- Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
- JNU-HKUST Joint Lab, Ji-Nan University, Guangzhou, Guang Dong, China
| | - Yueqing Hu
- Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
- State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Fanny C. F. Ip
- Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
- State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
- JNU-HKUST Joint Lab, Ji-Nan University, Guangzhou, Guang Dong, China
| | - Nancy Y. Ip
- Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
- State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
- JNU-HKUST Joint Lab, Ji-Nan University, Guangzhou, Guang Dong, China
- * E-mail:
| |
Collapse
|
25
|
Wei J, Zhu H, Komura K, Lord G, Tomcik M, Wang W, Doniparthi S, Tamaki Z, Hinchcliff M, Distler JHW, Varga J. A synthetic PPAR-γ agonist triterpenoid ameliorates experimental fibrosis: PPAR-γ-independent suppression of fibrotic responses. Ann Rheum Dis 2013; 73:446-54. [PMID: 23515440 DOI: 10.1136/annrheumdis-2012-202716] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND Persistent fibroblast activation initiated by transforming growth factor β (TGF-β) is a fundamental event in the pathogenesis of systemic sclerosis, and its pharmacological inhibition represents a potential therapeutic strategy. The nuclear receptor, peroxisome proliferator-activated receptor γ (PPAR-γ), exerts potent fibrotic activity. The synthetic oleanane triterpenoid, 2-cyano-3,12-dioxo-olean-1,9-dien-28-oic acid (CDDO), is a PPAR-γ agonist with potential effects on TGF-β signalling and dermal fibrosis. OBJECTIVE To examine the modulation of fibrogenesis by CDDO in explanted fibroblasts, skin organ cultures and murine models of scleroderma. MATERIAL AND METHODS The effects of CDDO on experimental fibrosis induced by bleomycin injection or by overexpression of constitutively active type I TGF-β receptor (TgfbR1ca) were evaluated. Modulation of fibrotic gene expression was examined in human skin organ cultures. To delineate the mechanisms underlying the antifibrotic effects of CDDO, explanted skin fibroblasts cultured in two-dimensional monolayers or in three-dimensional full-thickness human skin equivalents were studied. RESULTS CDDO significantly ameliorated dermal fibrosis in two complementary mouse models of scleroderma, as well as in human skin organ cultures and in three-dimensional human skin equivalents. In two-dimensional monolayer cultures of explanted normal fibroblasts, CDDO abrogated fibrogenic responses induced by TGF-β. These CDDO effects occurred via disruption of Smad-dependent transcription and were associated with inhibition of Akt activation. In scleroderma fibroblasts, CDDO attenuated the elevated synthesis of collagen. Remarkably, the in vitro antifibrotic effects of CDDO were independent of PPAR-γ. CONCLUSIONS The PPAR-γ agonist triterpenoid CDDO attenuates fibrogenesis by antagonistically targeting canonical TGF-β/Smad and Akt signalling in a PPAR-γ-independent manner. These findings identify this synthetic triterpenoid as a potential new therapy for the control of fibrosis.
Collapse
Affiliation(s)
- Jun Wei
- Division of Rheumatology, Northwestern University Feinberg School of Medicine, , Chicago, Illinois, USA
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
26
|
Molecularly imprinted polymers based on multi-walled carbon nanotubes for selective solid-phase extraction of oleanolic acid from the roots of kiwi fruit samples. Talanta 2012; 99:959-65. [DOI: 10.1016/j.talanta.2012.07.066] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2012] [Revised: 07/23/2012] [Accepted: 07/25/2012] [Indexed: 11/17/2022]
|
27
|
Gatbonton-Schwager TN, Letterio JJ, Tochtrop GP. Bryonolic acid transcriptional control of anti-inflammatory and antioxidant genes in macrophages in vitro and in vivo. JOURNAL OF NATURAL PRODUCTS 2012; 75:591-598. [PMID: 22339499 PMCID: PMC4089864 DOI: 10.1021/np200823p] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Bryonolic acid (BA) (1) is a naturally occurring triterpenoid with pleiotropic properties. This study characterizes the mechanisms mediating the anti-inflammatory and antioxidant activities of BA and validates the utility of BA as a tool to explore the relationships between triterpenoid structure and activity. BA reduces the inflammatory mediator NO by suppressing the expression of the inflammatory enzyme inducible nitric oxide synthase (iNOS) in LPS-activated RAW 264.7 macrophage cells. In addition, BA robustly induces the antioxidant protein heme oxygenase-1 (HO-1) in vitro and in vivo in an Nrf2-dependent manner. Further analyses of Nrf2 target genes reveal selectivity for the timing and level of gene induction by BA in treated macrophages with distinct patterns for Nrf2-regulated antioxidant genes. Additionally, the distinct expression profile of BA on Nrf2 target genes relative to oleanolic acid suggests the importance of the triterpenoid scaffold in dictating the pleiotropic effects exerted by these molecules.
Collapse
Affiliation(s)
| | - John J. Letterio
- Department of Pharmacology, Case Western Reserve University, Cleveland, Ohio 44106
- Department of Pediatrics and Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, Ohio 44106
| | - Gregory P. Tochtrop
- Department of Pharmacology, Case Western Reserve University, Cleveland, Ohio 44106
- Department of Chemistry, Case Western Reserve University, Cleveland, Ohio 44106
| |
Collapse
|
28
|
Shanmugam MK, Nguyen AH, Kumar AP, Tan BKH, Sethi G. Targeted inhibition of tumor proliferation, survival, and metastasis by pentacyclic triterpenoids: potential role in prevention and therapy of cancer. Cancer Lett 2012; 320:158-70. [PMID: 22406826 DOI: 10.1016/j.canlet.2012.02.037] [Citation(s) in RCA: 150] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2011] [Revised: 02/28/2012] [Accepted: 02/29/2012] [Indexed: 01/08/2023]
Abstract
Over the last two decades, extensive research on plant-based medicinal compounds has revealed exciting and important pharmacological properties and activities of triterpenoids. Fruits, vegetables, cereals, pulses, herbs and medicinal plants are all considered to be biological sources of these triterpenoids, which have attracted great attention especially for their potent anti-inflammatory and anti-cancer activities. Published reports in the past have described the molecular mechanism(s) underlying the various biological activities of triterpenoids which range from inhibition of acute and chronic inflammation, inhibition of tumor cell proliferation, induction of apoptosis, suppression of angiogenesis and metastasis. However systematic analysis of various pharmacological properties of these important classes of compounds has not been done. In this review, we describe in detail the pre-clinical chemopreventive and therapeutic properties of selected triterpenoids that inhibit multiple intracellular signaling molecules and transcription factors involved in the initiation, progression and promotion of various cancers. Molecular targets modulated by these triterpenoids comprise, cytokines, chemokines, reactive oxygen intermediates, oncogenes, inflammatory enzymes such as COX-2, 5-LOX and MMPs, anti-apoptotic proteins, transcription factors such as NF-κB, STAT3, AP-1, CREB, and Nrf2 (nuclear factor erythroid 2-related factor) that regulate tumor cell proliferation, transformation, survival, invasion, angiogenesis, metastasis, chemoresistance and radioresistance. Finally, this review also analyzes the potential role of novel synthetic triterpenoids identified recently which mimic natural triterpenoids in physical and chemical properties and are moving rapidly from bench to bedside research.
Collapse
Affiliation(s)
- Muthu K Shanmugam
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore
| | | | | | | | | |
Collapse
|
29
|
Giaginis C, Theocharis S. Current evidence on the anticancer potential of Chios mastic gum. Nutr Cancer 2011; 63:1174-84. [PMID: 22044444 DOI: 10.1080/01635581.2011.607546] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Chios mastic gum derived from the plant Pistacia lentiscus L. variation chia has been shown to exert beneficial effects on a wide range of human disorders. The most comprehensive data so far have indicated that mastic gum provides protection against gastrointestinal malfunctions and bacterial infections. Substantial evidence has also suggested that mastic gum exhibits hepatoprotective and cardioprotective, antiinflammatory/antioxidant, and antiatherogenic properties. In the last decade, an increasing number of studies further evaluated the potential antiproliferative properties of mastic gum against several types of human neoplasia. The present review aims to summarize the current data concerning the anticancer activities of mastic gum and their major constituents, highlighting also the molecular mechanisms through which they exert anticancer function. Mastic gum constituents that belong to the chemical class of triterpenoids appear to be mainly responsible for its anticancer potential. Thus, a brief discussion is dedicated to the anticancer activity of synthetic and naturally occurring triterpenoid analogues with similar chemical structure to mastic gum constituents. Taking into consideration the available data so far, Chios mastic gum could be considered as a conglomeration of effective anticancer drugs.
Collapse
Affiliation(s)
- Constantinos Giaginis
- Department of Forensic Medicine and Toxicology, Medical School, University of Athens, Athens, Greece.
| | | |
Collapse
|
30
|
Lopes FCM, Rocha A, Pirraco A, Regasini LO, Siqueira JR, Silva DH, Bolzani VS, Carlos IZ, Soares R. Alchornea glandulosa Ethyl Acetate Fraction Exhibits Antiangiogenic Activity: Preliminary Findings from In Vitro Assays Using Human Umbilical Vein Endothelial Cells. J Med Food 2011; 14:1244-53. [DOI: 10.1089/jmf.2010.0204] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Flávia Cristine Mascia Lopes
- Hematology and Hemotherapy Center, School of Medical Sciences, University of Campinas (UNICAMP), São Paulo, Brazil
| | - Ana Rocha
- Department of Biochemistry (U38/FCT), Faculty of Medicine, University of Porto, Porto, Portugal
| | - Ana Pirraco
- Department of Biochemistry (U38/FCT), Faculty of Medicine, University of Porto, Porto, Portugal
| | - Luis O. Regasini
- Department of Organic Chemistry, Araraquara Institute of Chemistry, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - Janaina R. Siqueira
- Department of Organic Chemistry, Araraquara Institute of Chemistry, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - Dulce H.S. Silva
- Department of Organic Chemistry, Araraquara Institute of Chemistry, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - Vanderlan S. Bolzani
- Department of Organic Chemistry, Araraquara Institute of Chemistry, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - Iracilda Z. Carlos
- Department of Clinical Analysis, Faculty of Pharmaceutical Sciences of Araraquara, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - Raquel Soares
- Department of Biochemistry (U38/FCT), Faculty of Medicine, University of Porto, Porto, Portugal
| |
Collapse
|
31
|
Wang O, Liu S, Zou J, Lu L, Chen L, Qiu S, Li H, Lu X. Anticancer activity of 2α, 3α, 19β, 23β-Tetrahydroxyurs-12-en-28-oic acid (THA), a novel triterpenoid isolated from Sinojackia sarcocarpa. PLoS One 2011; 6:e21130. [PMID: 21695177 PMCID: PMC3112233 DOI: 10.1371/journal.pone.0021130] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2011] [Accepted: 05/20/2011] [Indexed: 01/28/2023] Open
Abstract
Background Natural products represent an important source for agents of cancer prevention and cancer treatment. More than 60% of conventional anticancer drugs are derived from natural sources, particularly from plant-derived materials. In this study, 2α, 3α, 19β, 23β-tetrahydroxyurs-12-en-28-oic acid (THA), a novel triterpenoid from the leaves of Sinojackia sarcocarpa, was isolated, and its anticancer activity was investigated both in vitro and in vivo. Principal Findings THA possessed potent tumor selected toxicity in vitro. It exhibited significantly higher cytotoxicity to the cancer cell lines A2780 and HepG2 than to IOSE144 and QSG7701, two noncancerous cell lines derived from ovary epithelium and liver, respectively. Moreover, THA showed a dose-dependent inhibitory effect on A2780 ovary tumor growth in vivo in nude mice. THA induced a dose-dependent apoptosis and G2/M cell cycle arrest in A2780 and HepG2 cells. The THA-induced cell cycle arrest was accompanied by a downregulation of Cdc2. The apoptosis induced by THA was evident by induction of DNA fragmentation, release of cytoplasmic Cytochrome c from mitochondria, activation of caspases, downregulation of Bcl-2 and upregulation of Bax. Conclusion The primary data indicated that THA exhibit a high toxicity toward two cancer cells than their respective non-cancerous counterparts and has a significant anticancer activity both in vitro and in vivo. Thus, THA and/or its derivatives may have great potential in the prevention and treatment of human ovary tumors and other malignancies.
Collapse
Affiliation(s)
- Ouchen Wang
- Institute of Genomic Medicine, Wenzhou Medical College, Wenzhou, China
- First Affiliated Hospital of Wenzhou Medical College, Wenzhou, China
| | - Sujun Liu
- Leshan Normal University, Leshan, China
| | - Jiawei Zou
- Institute of Genomic Medicine, Wenzhou Medical College, Wenzhou, China
| | - Liting Lu
- Institute of Genomic Medicine, Wenzhou Medical College, Wenzhou, China
| | - Lin Chen
- Institute of Genomic Medicine, Wenzhou Medical College, Wenzhou, China
| | - Sunquan Qiu
- Institute of Genomic Medicine, Wenzhou Medical College, Wenzhou, China
| | - He Li
- First Affiliated Hospital of Wenzhou Medical College, Wenzhou, China
| | - Xincheng Lu
- Institute of Genomic Medicine, Wenzhou Medical College, Wenzhou, China
- * E-mail:
| |
Collapse
|
32
|
Yao H, Xu W, Shi X, Zhang Z. Dietary flavonoids as cancer prevention agents. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART C, ENVIRONMENTAL CARCINOGENESIS & ECOTOXICOLOGY REVIEWS 2011; 29:1-31. [PMID: 21424974 DOI: 10.1080/10590501.2011.551317] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Dietary agents identified from fruits and vegetables contribute to keeping balanced cell proliferation and preventing cell carcinogenesis. Dietary flavonoids, combined with other components such as various vitamins, play an important role in cancer prevention. Flavonoids act on reactive oxygen species, cell signal transduction pathways related to cellular proliferation, apoptosis, and angiogenesis. Many studies demonstrate that flavonoids are responsible for chemoprevention, although mechanisms of action remain to be investigated. Overall, exciting data show that dietary flavonoids could be considered as a useful cancer preventive approach. This review summarizes recent advancements on potential cancer preventive effects and mechanic insight of dietary flavonoids.
Collapse
Affiliation(s)
- Hua Yao
- Department of Stomatology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | | | | | | |
Collapse
|
33
|
Targeting inflammatory pathways by triterpenoids for prevention and treatment of cancer. Toxins (Basel) 2010; 2:2428-66. [PMID: 22069560 PMCID: PMC3153165 DOI: 10.3390/toxins2102428] [Citation(s) in RCA: 211] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2010] [Revised: 09/23/2010] [Accepted: 10/15/2010] [Indexed: 02/07/2023] Open
Abstract
Traditional medicine and diet has served mankind through the ages for prevention and treatment of most chronic diseases. Mounting evidence suggests that chronic inflammation mediates most chronic diseases, including cancer. More than other transcription factors, nuclear factor-kappaB (NF-κB) and STAT3 have emerged as major regulators of inflammation, cellular transformation, and tumor cell survival, proliferation, invasion, angiogenesis, and metastasis. Thus, agents that can inhibit NF-κB and STAT3 activation pathways have the potential to both prevent and treat cancer. In this review, we examine the potential of one group of compounds called triterpenes, derived from traditional medicine and diet for their ability to suppress inflammatory pathways linked to tumorigenesis. These triterpenes include avicins, betulinic acid, boswellic acid, celastrol, diosgenin, madecassic acid, maslinic acid, momordin, saikosaponins, platycodon, pristimerin, ursolic acid, and withanolide. This review thus supports the famous adage of Hippocrates, “Let food be thy medicine and medicine be thy food”.
Collapse
|
34
|
To C, Shilton BH, Di Guglielmo GM. Synthetic triterpenoids target the Arp2/3 complex and inhibit branched actin polymerization. J Biol Chem 2010; 285:27944-57. [PMID: 20566646 PMCID: PMC2934661 DOI: 10.1074/jbc.m110.103036] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2010] [Revised: 06/16/2010] [Indexed: 01/11/2023] Open
Abstract
Synthetic triterpenoids are anti-tumor agents that affect numerous cellular functions including apoptosis and growth inhibition. Here, we used mass spectrometric and protein array approaches and uncovered that triterpenoids associate with proteins of the actin cytoskeleton, including actin-related protein 3 (Arp3). Arp3, a subunit of the Arp2/3 complex, is involved in branched actin polymerization and the formation of lamellipodia. 2-cyano-3,12-dioxooleana-1,9-dien-28-oic acid (CDDO)-Im and CDDO-Me were observed to 1) inhibit the localization of Arp3 and actin at the leading edge of cells, 2) abrogate cell polarity, and 3) inhibit Arp2/3-dependent branched actin polymerization. We confirmed our drug effects with siRNA targeting of Arp3 and observed a decrease in Rat2 cell migration. Taken together, our data suggest that synthetic triterpenoids target Arp3 and branched actin polymerization to inhibit cell migration.
Collapse
Affiliation(s)
- Ciric To
- From the Departments of Physiology and Pharmacology and
| | - Brian H. Shilton
- Biochemistry, Medical Sciences Building, University of Western Ontario, London, Ontario N6A 5C1, Canada
| | | |
Collapse
|
35
|
Yeh CT, Wu CH, Yen GC. Ursolic acid, a naturally occurring triterpenoid, suppresses migration and invasion of human breast cancer cells by modulating c-Jun N-terminal kinase, Akt and mammalian target of rapamycin signaling. Mol Nutr Food Res 2010; 54:1285-95. [PMID: 20352621 DOI: 10.1002/mnfr.200900414] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Metastasis is one of the most important factors related to breast cancer therapeutic efficacy. Ursolic acid, a naturally occurring triterpenoid, has various anticancer activities. In this study, we first observed that ursolic acid exerted a dose- and time-dependent inhibitory effect on the migration and invasion of highly metastatic breast MDAMB231 cells at non-cytotoxic concentrations. This effect was associated with reduced activities of metalloproteinase-2 (MMP-2) and u-PA, which correlated with enhanced expression of tissue inhibitor of MMP-2 and plasminogen activator inhibitor-1, respectively. Ursolic acid suppressed the phosphorylation of Jun N-terminal kinase, Akt and mammalian target of rapamycin, but had no effect on the phosphorylation of ERK and p38. Ursolic acid also strongly reduced the levels of NFkappaB p65, c-Jun and c-Fos proteins in the nucleus of MDAMB231 cells. A time-dependent inhibition of the protein levels of Rho-like GTPases, growth factor receptor-bound protein 2, Ras and vascular endothelial growth factor in cytosol by ursolic acid treatment was also observed. In conclusion, we demonstrated that the anti-invasive effects of ursolic acid on MDAMB231 cells might be through the inhibition of Jun N-terminal kinase, Akt and mammalian target of rapamycin phosphorylation and a reduction of the level of NFkappaB protein in the nucleus, ultimately leading to downregulation of MMP-2 and u-PA expression. These results suggest that ursolic acid has potential as a chemopreventive agent for metastatic breast cancer.
Collapse
Affiliation(s)
- Chi-Tai Yeh
- National Institute of Cancer Research, National Health Research Institutes, Miaoli County, Taiwan
| | | | | |
Collapse
|
36
|
Čebašek V, Eržen I, Vyhnal A, Janáček J, Ribarič S, Kubínová L. The estimation error of skeletal muscle capillary supply is significantly reduced by 3D method. Microvasc Res 2010; 79:40-6. [DOI: 10.1016/j.mvr.2009.11.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2009] [Accepted: 11/05/2009] [Indexed: 11/25/2022]
|
37
|
Abstract
Triterpenoids are structurally diverse organic compounds, characterized by a basic backbone modified in multiple ways, allowing the formation of more than 20 000 naturally occurring triterpenoid varieties. Several triterpenoids, including ursolic and oleanolic acid, betulinic acid, celastrol, pristimerin, lupeol, and avicins possess antitumor and anti-inflammatory properties. To improve antitumor activity, some synthetic triterpenoid derivatives have been synthesized, including cyano-3,12-dioxooleana-1,9 (11)-dien-28-oic (CDDO), its methyl ester (CDDO-Me), and imidazolide (CDDO-Im) derivatives. Of these, CDDO, CDDO-Me, and betulinic acid have shown promising antitumor activities and are presently under evaluation in phase I studies. Triterpenoids are highly multifunctional and the antitumor activity of these compounds is measured by their ability to block nuclear factor-kappaB activation, induce apoptosis, inhibit signal transducer, and activate transcription and angiogenesis.
Collapse
|
38
|
Kuo RY, Qian K, Morris-Natschke SL, Lee KH. Plant-derived triterpenoids and analogues as antitumor and anti-HIV agents. Nat Prod Rep 2009; 26:1321-44. [PMID: 19779642 DOI: 10.1039/b810774m] [Citation(s) in RCA: 114] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Reen-Yen Kuo
- UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7568, USA
| | | | | | | |
Collapse
|
39
|
The phytoestrogen quercetin impairs steroidogenesis and angiogenesis in swine granulosa cells in vitro. J Biomed Biotechnol 2009; 2009:419891. [PMID: 19704917 PMCID: PMC2693932 DOI: 10.1155/2009/419891] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2009] [Revised: 04/07/2009] [Accepted: 04/22/2009] [Indexed: 11/17/2022] Open
Abstract
Experimental evidence documents that nutritional phytoestrogens may interact with reproductive functions but the exact mechanism of action is still controversial. Since quercetin is one of the main flavonoids in livestock nutrition, we evaluated its possible effects on cultured swine granulosa cell proliferation, steroidogenesis, and redox status. Moreover, since angiogenesis is essential for follicle development, the effect of the flavonoid on Vascular Endothelial Growth Factor output by granulosa cells was also taken into account. Our data evidence that quercetin does not affect granulosa cell growth while it inhibits progesterone production and modifies estradiol 17beta production in a dose-related manner. Additionally, the flavonoid interferes with the angiogenic process by inhibiting VEGF production as well as by altering redox status. Since steroidogenesis and angiogenesis are strictly involved in follicular development, these findings appear particularly relevant, pointing out a possible negative influence of quercetin on ovarian physiology. Therefore, the possible reproductive impact of the flavonoid should be carefully considered in animal nutrition.
Collapse
|
40
|
Khallouki F, Hull WE, Owen RW. Characterization of a rare triterpenoid and minor phenolic compounds in the root bark of Anisophyllea dichostyla R. Br. Food Chem Toxicol 2009; 47:2007-12. [PMID: 19460411 DOI: 10.1016/j.fct.2009.05.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2008] [Revised: 05/11/2009] [Accepted: 05/13/2009] [Indexed: 01/11/2023]
Abstract
Anisophyllea dichostyla R. Br. (Anisophylleaceae), is a small shrub which grows widely in regions of the Democratic Republic of Congo (DRC) where its root barks are used in folk medicine for the treatment of many debilitating diseases. In a previous work [Khallouki, F., Haubner, R., Hull, W.E., Erben, G., Spiegelhalder, B., Bartsch, H., Owen, R.W., 2007. Isolation, purification and identification of ellagic acid derivatives, catechins and procyanidins from the root barks of Anisophyllea dichostyla R. Br. Food and Chemical Toxicology 45, 472-485] on this species, an appreciable number (16) of phenolic antioxidants (3.32 g/kg) such as ellagitannins (27%) and polyhydroxyflavan-3-ols (catechins and procyanidins; 73%) were isolated and identified. Two fractions, as well as containing minor phenolic compounds also showed evidence of a secondary plant substance similar to a triterpenoid. Following purification of the triterpenoid by semi-preparative HPLC, and recrystallization, the structure was elucidated as bryonolic acid as evinced by comprehensive spectroscopic analyses including (1)H and (13)C NMR, DEPT, COSY, ROESY, HMQC, HMBC, HPLC-ESI-MS and GC-MS experiments. Bryonolic acid, which is extremely rare in nature, is therefore reported in the family Anisophylleaceae for the first time. Furthermore, the following minor phenolic compounds namely tyrosol, 2-(3-methoxy, 4-hydroxyphenyl)-ethanol, vanillin, syringaldehyde, vanillic acid, syringic acid, gallic acid and ferulic acid were also identified by GC-MS in this species for the first time.
Collapse
Affiliation(s)
- F Khallouki
- Division of Chemopreventive Oncology, German Cancer Research Center, Im Neuenheimer Feld 517, D-69120 Heidelberg, Germany
| | | | | |
Collapse
|