1
|
Rashidi Z, Khosravizadeh Z, Talebi A, Khodamoradi K, Ebrahimi R, Amidi F. Overview of biological effects of Quercetin on ovary. Phytother Res 2020; 35:33-49. [PMID: 32557927 DOI: 10.1002/ptr.6750] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 04/14/2020] [Accepted: 05/13/2020] [Indexed: 12/14/2022]
Abstract
Over the last few decades, using natural products has been increased to treat different diseases. Today, great attention has been pointed toward the usage of natural products such as flavonoids, especially Quercetin (QUR), in the treatment of diseases. QUR as a natural antioxidant has been traditionally used to prevent or treat a variety of diseases such as cancer, cardiovascular disease, polycystic ovary syndrome (PCOS), obesity, chronic inflammation, and reproductive system dysfunction. Several studies demonstrated that QUR acts as an anti-inflammatory, anti-apoptotic, antioxidant, and anticancer agent. With this in view, in this study, we intended to describe an overview of the biological effects of QUR on the ovary. QUR improves the quality of oocytes and embryos. It affects the proliferation and apoptosis and decreases the oxidative stress in granulosa cells (GCs). Furthermore, QUR can be used as a complementary and alternative therapy in ovarian cancer and it has beneficial effects in the treatment of PCOS patients. It seems that QUR as a supplementary factor has different activities for the treatment of different disorders and it also has bidirectional activities. However, further investigations are needed for understanding the efficacy of QUR in the treatment and improvement of gynecological patients.
Collapse
Affiliation(s)
- Zahra Rashidi
- Fertility and Infertility Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Zahra Khosravizadeh
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Ali Talebi
- School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran.,Sexual Health and Fertility Research Center, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Kajal Khodamoradi
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Reyhane Ebrahimi
- Department of Clinical Biochemistry, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.,Students' Scientific Research Center (SSRC), Tehran University of Medical Sciences, Tehran, Iran
| | - Fardin Amidi
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.,Sexual Health and Fertility Research Center, Shahroud University of Medical Sciences, Shahroud, Iran.,Department of Infertility, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| |
Collapse
|
2
|
Shafabakhsh R, Asemi Z. Quercetin: a natural compound for ovarian cancer treatment. J Ovarian Res 2019; 12:55. [PMID: 31202269 PMCID: PMC6570913 DOI: 10.1186/s13048-019-0530-4] [Citation(s) in RCA: 124] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Accepted: 06/04/2019] [Indexed: 01/09/2023] Open
Abstract
Ovarian cancer is the main cause of death among all reproductive cancers in females. In 2018, ovarian cancer was the seventh most common cancer of women entire the world. A wide variety of molecular and genetic alterations as well as different response to therapies in the different types of ovarian cancer lead to problems in design a common therapeutic strategy. Besides, ovarian cancer cells have tendency to acquire resistance to common cancer treatments through multiple mechanisms. Various factors, including cytokines, growth factors, proteases, adhesion molecules, coagulation factors, hormones and apoptotic agents have been examined to find effective cancer treatment. Phytochemicals have been indicated to have great potential anti-cancer properties against various types of cancers. Quercetin is one of the phytochemicals that exists extensively in daily foods. Wide evidences revealed that quercetin is able to inhibit various types of cancers including breast, lung, nasopharyngeal, kidney, colorectal, prostate, pancreatic, and ovarian cancer. Several in vitro and in vivo studied conducted to evaluate cytotoxic effects of quercetin on ovarian cancer. Since quercetin does not harm healthy cells and it is cytotoxic to cancer cells via various mechanisms, researchers suggest that it could be an ideal agent for ovarian cancer treatment or an adjuvant agent in combination with other anti-cancer drugs. Thus, in this review, we focused on chemo-preventive and curative attitude of quercetin for ovarian cancer and summarize some of the most recent findings which regard the possible molecular mechanisms by which this natural compound inhibits this cancer.
Collapse
Affiliation(s)
- Rana Shafabakhsh
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, IR, Iran
| | - Zatollah Asemi
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, IR, Iran.
| |
Collapse
|
3
|
Moga MA, Bălan A, Anastasiu CV, Dimienescu OG, Neculoiu CD, Gavriș C. An Overview on the Anticancer Activity of Azadirachta indica (Neem) in Gynecological Cancers. Int J Mol Sci 2018; 19:ijms19123898. [PMID: 30563141 PMCID: PMC6321405 DOI: 10.3390/ijms19123898] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Revised: 12/02/2018] [Accepted: 12/03/2018] [Indexed: 12/17/2022] Open
Abstract
In recent years, a wide range of studies have pointed out the importance of nutraceuticals as reservoirs of therapeutic compounds for several diseases, including cancer. This study is centered on the role of some nutraceuticals as anticancer agents and on their efficiency in the oncological gynecological field. Gynecological cancers include cervical, ovarian, and breast neoplasia and these are the major causes of morbidity and mortality in the female population. Cervical neoplasia affects sexually active women aged between 30 and 40 years and is considered the second leading cause of death for women worldwide. Epidemiological studies have shown a strong association of this cancer with human papilloma virus (HPV) infection, independent of any others risk factors. Ovarian cancer represents about 4% of all women’s cancers and breast neoplasia registers 52.8 new cases per 100,000 women annually. Since ancient times, herbal therapies have shown a wide range of beneficial effects and a high potential for safeguarding human health. Azadirachta indica (Neem) is a medicinal plant of Indian origin, a tree with more of 140 isolated compounds and at least 35 biologically active principles that have shown an important influence as tumor suppressors by interfering with the carcinogenesis process. Used for centuries in Asia as a natural remedy for cancer, neem compounds present in bark, leaves, flowers, and seed oil have been shown to possess properties such as chemopreventive capacity, apoptotic activities, immunomodulatory effects, and induction of p53-independent apoptosis. The current study is a systematic literature review based on the anticarcinogenic potential of neem compounds in gynecological cancers.
Collapse
Affiliation(s)
- Marius Alexandru Moga
- Department of Medical and Surgical Specialties, Faculty of Medicine, Transilvania University of Brasov, 500019 Brasov, Romania.
| | - Andreea Bălan
- Department of Medical and Surgical Specialties, Faculty of Medicine, Transilvania University of Brasov, 500019 Brasov, Romania.
| | - Costin Vlad Anastasiu
- Department of Medical and Surgical Specialties, Faculty of Medicine, Transilvania University of Brasov, 500019 Brasov, Romania.
| | - Oana Gabriela Dimienescu
- Department of Medical and Surgical Specialties, Faculty of Medicine, Transilvania University of Brasov, 500019 Brasov, Romania.
| | - Carmen Daniela Neculoiu
- Department of Fundamental, Prophylactic and Clinical Sciences, Faculty of Medicine, University Transilvania Braşov, 500019 Brasov, Romania.
| | - Claudia Gavriș
- Department of Medical and Surgical Specialties, Faculty of Medicine, Transilvania University of Brasov, 500019 Brasov, Romania.
| |
Collapse
|
4
|
Noreen H, Farman M, McCullagh JSO. Bioassay-guided isolation of cytotoxic flavonoids from aerial parts of Coronopus didymus. JOURNAL OF ETHNOPHARMACOLOGY 2016; 194:971-980. [PMID: 27989879 DOI: 10.1016/j.jep.2016.10.074] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 10/22/2016] [Accepted: 10/24/2016] [Indexed: 06/06/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Coronopus didymus Linn. (Brassicaceae) is a medicinal plant used traditionally as antipyretic, expectorant, to purify blood and for alleviating symptoms of pain, inflammations, malaria, wounds and cancer. AIM OF THE STUDY The present study was designed to isolate and identify the cytotoxic compounds responsible for anticancer activity from this traditionally useful medicinal plant. MATERIALS AND METHODS Bioassay-guided fractionation of the ethanolic extract of aerial parts of C. didymus allowed the isolation of compounds responsible for anticancer activity. Their structures were elucidated by UV Spectroscopy (with shift reagents), ESI-MS and NMR spectral data. Preliminary anticancer activity of ethanolic extract, different fractions and isolated compounds was assessed through MTT in vitro cytotoxicity assay in a dose dependent manner against human cancer cell lines (HeLa and LN18) and normal 293T cells. RESULTS Three flavonoids namely 5,7,4'-trihydroxy-3'-methoxyflavone-4'-O-β-D-glucoside (1), 5,7,4'-trihydroxy-3'-methoxyflavone-4'-O-(6''-acetyl)-β-D-glucoside (2) and 5,7,4'-trihydroxy-3'-methoxy flavone (3), were isolated from aerial parts. Compound 1 was identified for the first time from the genus Coronopus. All the compounds 1-3 showed promising activity against HeLa cells with IC50 values of 43.50, 0.63 and 3.67 µM, respectively. Significant result was also obtained with compound 3 against LN18 cells with IC50 value of 46.63 µM. CONCLUSION The cytotoxic activity of the crude extract and fractions which may largely be due to its major isolated constituents, flavonoids 1-3, against both HeLa and LN18 cells provides a scientific basis for the ethnopharmacological use of C. didymus as anticancer agent.
Collapse
Affiliation(s)
- Hafiza Noreen
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan; Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Muhammad Farman
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan.
| | - James S O McCullagh
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, United Kingdom
| |
Collapse
|
5
|
Ahmed HH, Aglan HA, Zaazaa AM, Shalby AB, El Toumy SA. Quercetin Confers Tumoricidal Activity Through Multipathway Mechanisms in A N-Methylnitrosourea Rat Model of Colon Cancer. Asian Pac J Cancer Prev 2016; 17:4991-4998. [PMID: 28032729 PMCID: PMC5454709 DOI: 10.22034/apjcp.2016.17.11.4991] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Objective: This research was conducted to explore mechanisms behind the potency of quercetin in inhibiting
colon cancer induced in an experimental model. Materials and Methods: Forty adult male rats of Wistar strain were
distributed into 4 groups; a negative control group, a colon cancer bearing group, a quercetin-treated group and a
5-fluorouracil (5-FU)-treated group. Serum TAG72 and GAL3 levels were quantified by ELISA. Colonic Wnt5a and
Axin-1 gene expression was estimated by PCR. In addition, colonic tissues were subjected to immunohistochemical
examination of Bax expression and histological investigation of histopathological alterations. Results: Quercetin elicited
significant reduction in serum TAG72 and GAL3 levels, in addition to significant suppression of colonic Wnt5a gene
expression and amplification of colonic Axin-1 gene expression. Also, it caused moderate positive reaction for Bax in
mucosal epithelium. Conclusion: The present research provides experimental evidence about the activity of quercetin
in the colon cancer of rats. Inhibitory effects on cancer development might be ascribable to regulatory action on Wnt
signaling and induction of apoptosis.
Collapse
Affiliation(s)
- Hanaa H Ahmed
- Hormones Department, National Research Centre, Giza, Egypt.
| | | | | | | | | |
Collapse
|
6
|
Parvaresh A, Razavi R, Rafie N, Ghiasvand R, Pourmasoumi M, Miraghajani M. Quercetin and ovarian cancer: An evaluation based on a systematic review. JOURNAL OF RESEARCH IN MEDICAL SCIENCES 2016; 21:34. [PMID: 27904580 PMCID: PMC5122222 DOI: 10.4103/1735-1995.181994] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/26/2015] [Revised: 02/08/2016] [Accepted: 03/08/2016] [Indexed: 11/20/2022]
Abstract
Some studies have suggested chemopreventive and therapeutic effects of quercetin (Q) on carcinogenesis. The aim of this review was to evaluate the association between Q and ovarian cancer risk among human researches and induced sensitivity to some types of chemotherapeutic drugs and antiproliferative effects of this flavonoid in the animals and cell lines studies. Data for this systematic review were achieved through searches of the MEDLINE (PubMed), Google Scholar, Science Direct, Scopus, Cochrane, SID, and Magiran databases for studies published up to May 2015. Relevant studies were reviewed based on Preferred Reporting Item for Systematic Review and Meta analysis guidelines. From the total number of 220 papers obtained at the initial search, 13 publications including 1 prospective, 2 case -control, 1 animal, and 9 in vitro human and animal cancer cell lines studies were eligible. Despite findings in laboratory settings, results from the epidemiological studies commented that the potentially protective effects of Q not be able to significantly decrease ovarian cancer risk at levels commonly consumed (1.01–31.7 mg/day) in a typical diet. However, animal and in vitro studies suggest that Q exerts anticancer effects via inhibiting tumor growth, and angiogenesis, interrupt the cell cycle, and induce apoptosis. It is highlighted the need for more studies to be conducted.
Collapse
Affiliation(s)
- Arefe Parvaresh
- Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran; Department of Community Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Roghaye Razavi
- Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran; Department of Community Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Nahid Rafie
- Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran; Department of Community Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Reza Ghiasvand
- Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran; Department of Community Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Makan Pourmasoumi
- Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran; Department of Community Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Maryam Miraghajani
- Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran; Department of Community Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran
| |
Collapse
|
7
|
Smith AJ, Oertle J, Warren D, Prato D. Quercetin: A Promising Flavonoid with a Dynamic Ability to Treat Various Diseases, Infections, and Cancers. ACTA ACUST UNITED AC 2016. [DOI: 10.4236/jct.2016.72010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
8
|
Dian L, Yu E, Chen X, Wen X, Zhang Z, Qin L, Wang Q, Li G, Wu C. Enhancing oral bioavailability of quercetin using novel soluplus polymeric micelles. NANOSCALE RESEARCH LETTERS 2014; 9:2406. [PMID: 26088982 PMCID: PMC4493852 DOI: 10.1186/1556-276x-9-684] [Citation(s) in RCA: 122] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 12/09/2014] [Indexed: 05/04/2023]
Abstract
To improve its poor aqueous solubility and stability, the potential chemotherapeutic drug quercetin was encapsulated in soluplus polymeric micelles by a modified film dispersion method. With the encapsulation efficiency over 90%, the quercetin-loaded polymeric micelles (Qu-PMs) with drug loading of 6.7% had a narrow size distribution around mean size of 79.00 ± 2.24 nm, suggesting the complete dispersibility of quercetin in water. X-ray diffraction (XRD) patterns illustrated that quercetin was in amorphous or molecular form within PMs. Fourier transform infrared spectroscopy (FTIR) indicated that quercetin formed intermolecular hydrogen bonding with carriers. An in vitro dialysis test showed the Qu-PMs possessed significant sustained-release property, and the formulation was stable for at least 6 months under accelerated conditions. The pharmacokinetic study in beagle dogs showed that absorption of quercetin after oral administration of Qu-PMs was improved significantly, with a half-life 2.19-fold longer and a relative oral bioavailability of 286% as compared to free quercetin. Therefore, these novel soluplus polymeric micelles can be applied to encapsulate various poorly water-soluble drugs towards a development of more applicable therapeutic formulations.
Collapse
Affiliation(s)
- Linghui Dian
- />School of Pharmaceutical Sciences, Guangdong Medical College, Xincheng Road 1, Dongguan, 523808 Guangdong People’s Republic of China
- />School of Pharmaceutical Sciences, Sun Yat-Sen University, Waihuan Road 132, Guangzhou, Guangdong 510006 People’s Republic of China
| | - Enjiang Yu
- />School of Pharmaceutical Sciences, Guangdong Medical College, Xincheng Road 1, Dongguan, 523808 Guangdong People’s Republic of China
| | - Xiaona Chen
- />School of Pharmaceutical Sciences, Sun Yat-Sen University, Waihuan Road 132, Guangzhou, Guangdong 510006 People’s Republic of China
| | - Xinguo Wen
- />School of Pharmaceutical Sciences, Sun Yat-Sen University, Waihuan Road 132, Guangzhou, Guangdong 510006 People’s Republic of China
| | - Zhengzan Zhang
- />School of Pharmaceutical Sciences, Sun Yat-Sen University, Waihuan Road 132, Guangzhou, Guangdong 510006 People’s Republic of China
| | - Lingzhen Qin
- />School of Pharmaceutical Sciences, Sun Yat-Sen University, Waihuan Road 132, Guangzhou, Guangdong 510006 People’s Republic of China
| | - Qingqing Wang
- />School of Pharmaceutical Sciences, Sun Yat-Sen University, Waihuan Road 132, Guangzhou, Guangdong 510006 People’s Republic of China
| | - Ge Li
- />R&D Center of Pharmaceutical Engineering, Sun Yat-sen University, Waihuan Road 132, Guangzhou, 510006 Guangdong People’s Republic of China
| | - Chuanbin Wu
- />School of Pharmaceutical Sciences, Sun Yat-Sen University, Waihuan Road 132, Guangzhou, Guangdong 510006 People’s Republic of China
- />R&D Center of Pharmaceutical Engineering, Sun Yat-sen University, Waihuan Road 132, Guangzhou, 510006 Guangdong People’s Republic of China
| |
Collapse
|
9
|
Soysa P, De Silva IS, Wijayabandara J. Evaluation of antioxidant and antiproliferative activity of Flueggea leucopyrus Willd (katupila). BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2014; 14:274. [PMID: 25074702 PMCID: PMC4129101 DOI: 10.1186/1472-6882-14-274] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Accepted: 07/25/2014] [Indexed: 11/20/2022]
Abstract
BACKGROUND Flueggea leucopyrus Willd is a shrub grown in many parts of the dry zones in Sri Lanka. The leaves of F. leucopyrus has been used for treating cancer in the traditional system of medicine in Sri Lanka. Hence, this study was performed to analyze the antioxidant and antiproliferative properties of the aqueous extract of the leaves of F. leucopyrus on HEp-2 cells. METHOD The aqueous extract of F. leucopyrus leaves (AEFLL) was freeze dried. Total phenolic content was assayed using Folin Ciocalteu reagent. Antioxidant activities of the extracts were evaluated using in vitro assays: inhibition of DPPH (1,1-diphenyl-2-picrylhydrazyl) radical scavenging and 2-deoxy-D-ribose degradation assay. Nitric oxide radical scavenging activity was determined by using Griess reagent. The MTT, LDH assays and protein synthesis were used to study antiproliferative and cytotoxic activities against the Hep-2 cell after 24 hour exposure. DNA fragmentation and microscopic examination of cells stained with a mixture of ethidium bromide/acridine orange were used to visualize apoptosis in HEp-2 cells treated with the AEFLL. RESULTS The total phenolic content of the extract was 22.15 ± 1.65 (w/w) % of gallic acid equivalent. The values for EC50 were 11.16 ± 0.37, 4.82 ± 1.82 and 23.77 ± 3.16 μg/mL for DPPH radical scavenging, nitric oxide radical scavenging activity and 2-deoxy-D-ribose degradation assay respectively. The EC50 with MTT and LDH assays were 506.8 ± 63.16 and 254.52 ± 42.92 μg/mL respectively. A dose dependent decrease in protein synthesis in HEp-2 cells was shown with an EC50 value of 305.84 ± 12.40 μg/mL. DNA fragmentation and ethidium bromide/acridine assays showed that the AEFLL induces apoptosis in HEp-2 cells. These results were in conformity with the morphological changes observed in the cells treated with the AEFLL. The brine shrimp bioassay showed that the AEFLL had no lethality over the concentration range of 50-500 μg/mL. CONCLUSIONS Aqueous extract of the leaves of F. leucopyrus extract demonstrated antioxidant activity in vitro. Further it showed antiproliferative properties and induced apoptosis in HEp-2 cells.
Collapse
Affiliation(s)
- Preethi Soysa
- />Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Colombo, Colombo-08, Sri Lanka
| | - Irushi Shamalika De Silva
- />Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Colombo, Colombo-08, Sri Lanka
| | | |
Collapse
|
10
|
Abstract
Food-derived flavonoid quercetin, widely distributed in onions, apples, and tea, is able to inhibit growth of various cancer cells indicating that this compound can be considered as a good candidate for anticancer therapy. Although the exact mechanism of this action is not thoroughly understood, behaving as antioxidant and/or prooxidant as well as modulating different intracellular signalling cascades may all play a certain role. Such inhibitory activity of quercetin has been shown to depend first of all on cell lines and cancer types; however, no comprehensive site-specific analysis of this effect has been published. In this review article, cytotoxicity constants of quercetin measured in various human malignant cell lines of different origin were compiled from literature and a clear cancer selective action was demonstrated. The most sensitive malignant sites for quercetin revealed to be cancers of blood, brain, lung, uterine, and salivary gland as well as melanoma whereas cytotoxic activity was higher in more aggressive cells compared to the slowly growing cells showing that the most harmful cells for the organism are probably targeted. More research is needed to overcome the issues of poor water solubility and relatively low bioavailability of quercetin as the major obstacles limiting its clinical use.
Collapse
|
11
|
Manzano JI, Lecerf-Schmidt F, Lespinasse MA, Di Pietro A, Castanys S, Boumendjel A, Gamarro F. Identification of specific reversal agents for Leishmania ABCI4-mediated antimony resistance by flavonoid and trolox derivative screening. J Antimicrob Chemother 2013; 69:664-72. [PMID: 24126793 DOI: 10.1093/jac/dkt407] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
OBJECTIVES To identify reversal agents for the Leishmania ABCI4 transporter that confers resistance to antimony. METHODS Selective ABCI4 inhibitors among a series of 15 flavonoid and trolox derivatives or analogues were investigated by evaluating their ability to reverse antimony resistance in Leishmania parasites overexpressing ABCI4. Among the compounds screened, N-ethyltrolox carboxamide (compound D2) produced the highest reversal activity. In order to optimize the activity of D2, we synthesized a series of 10 derivatives by condensation of various amines with trolox. RESULTS Analysis of antimony resistance reversal activity showed that N-propyltrolox carboxamide (compound D4) was the most potent ABCI4 inhibitor, with reversal activity being maintained in the intracellular amastigote stage. In addition, trolox derivatives significantly reverted the resistance to zinc protoporphyrin. The mechanism of action of these active derivatives was found to be related to significant reversion of Sb(III) and zinc protoporphyrin accumulation and to a decrease in drug efflux. CONCLUSIONS Our findings suggest that trolox derivatives D2 and D4 could be considered to be specific reversal agents targeting the Leishmania ABCI4 transporter. The structure-activity relationship obtained in the present study highlights the importance of the size and length of the alkyl substituent linked to trolox. Furthermore, the structural data obtained provide valuable information for the further development of new, even more specific and potent Leishmania ABCI4 reversal agents.
Collapse
Affiliation(s)
- José Ignacio Manzano
- Instituto de Parasitología y Biomedicina 'López-Neyra', IPBLN-CSIC, Parque Tecnológico de Ciencias de la Salud, Avda. del Conocimiento s/n, 18016 Armilla, Granada, Spain
| | | | | | | | | | | | | |
Collapse
|
12
|
Chen C, Jiang ZY, Yu B, Wu XL, Dai CQ, Zhao CL, Ju DH, Chen XY. Study on the anti-H1N1 virus effects of quercetin and oseltamivir and their mechanism related to TLR7 pathway. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2012; 14:877-885. [PMID: 22924574 DOI: 10.1080/10286020.2012.702108] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The antivirus effect of quercetin and oseltamivir on the Toll-like receptor 7 (TLR7) signaling pathway was observed when dendritic cells and macrophages were infected with H1N1. Leukomonocytes were obtained from umbilical cord blood and harvested after stimulation by recombinant human Granulocyte-Macrophage Colony-Stimulating Factor (rhGM-CSF) and recombinant human Interleukin 4 (rhIL-4). Virus-infected cell model was established by human bronchial epithelial cells (16HBE) infected with H1N1. After immunological cells and virus-infected cells were co-cultured, quercetin and oseltamivir were also added into the medium as a treatment intervention. Then the immunological cells were collected for Real Time PCR (RT-PCR) and Western blot to determine the expression levels of genes related to TLR7 pathway. Viral infection led to cell death and increased the gene expression levels of TLR7 signal pathway. Quercetin and oseltamivir increased cell viability and reduced the expression levels of TLR7 signal pathway.
Collapse
Affiliation(s)
- Chen Chen
- Department of Microbiology and Immunology, School of Medicine, Jinan University, Guangzhou, China
| | | | | | | | | | | | | | | |
Collapse
|
13
|
Duthie GG, Duthie SJ, Kyle JA. Plant polyphenols in cancer and heart disease: implications as nutritional antioxidants. Nutr Res Rev 2009; 13:79-106. [PMID: 19087434 DOI: 10.1079/095442200108729016] [Citation(s) in RCA: 409] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Certain dietary antioxidants such as vitamin E and vitamin C are important for maintaining optimum health. There is now much interest in polyphenolic products of the plant phenylpropanoid pathway as they have considerable antioxidant activity in vitro and are ubiquitous in our diet. Rich sources include tea, wine, fruits and vegetables although levels are affected by species, light, degree of ripeness, processing and storage. This confounds the formulation of databases for the estimation of dietary intakes. Most attention to date has focused on the flavonoids, a generic term which includes chalcones, flavones, flavanones, flavanols and anthocyanins. There is little convincing epidemiological evidence that intakes of polyphenols are inversely related to the incidence of cancer whereas a number of studies suggest that high intakes of flavonoids may be protective against CHD. In contrast, numerous cell culture and animal models indicate potent anticarcinogenic activity by certain polyphenols mediated through a range of mechanisms including antioxidant activity, enzyme modulation, gene expression, apoptosis, upregulation of gap junction communication and P-glycoprotein activation. Possible protective effects against heart disease may be due to the ability of some polyphenols to prevent the oxidation of LDL to an atherogenic form although anti-platelet aggregation activity and vasodilatory properties are also reported. However, some polyphenols are toxic in mammalian cells. Thus, until more is known about their bioavailability, metabolism and intracellular location, increasing intakes of polyphenols by supplements or food fortification may be unwise.
Collapse
Affiliation(s)
- G G Duthie
- Division of Cellular Integrity, Rowett Research Institute, Greenburn Road, Bucksburn, Aberdeen AB21 9SB, UK.
| | | | | |
Collapse
|
14
|
Loizzo MR, Said A, Tundis R, Hawas UW, Rashed K, Menichini F, Frega NG, Menichini F. Antioxidant and antiproliferative activity of Diospyros lotus L. extract and isolated compounds. PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2009; 64:264-70. [PMID: 19731038 DOI: 10.1007/s11130-009-0133-0] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
The object of the study was to determine the chemical composition of Diospyros lotus L. extract and their antioxidant and antiproliferative properties. Eight compounds were isolated from D. lotus and identified as gallic acid, methylgallate, ellagic acid, kaempferol, quercetin,myricetin, myricetin 3-O-beta-glucuronide, and myricetin-3-O-alpha-rhamnoside. D. lotus extract tested in different in vitro systems (DPPH, ABTS, FRAP, and Fe2+ chelating activity assay) showed significant antioxidant activity. The potential antiproliferative properties of D. lotus extract and isolated compounds against nine human cancer cell lines such as COR-L23, CaCo-2, C32, ACHN, A375, A549, Huh-7D12, MCF-7, and LNCaP were investigated in vitro by SRB assay. D. lotus extract demonstrated the highest inhibitory activity against COR-L23 with an IC50 value of 12.2 microg/ml. Among identified hydrolysable tannins, ellagic acid evidenced strong antiproliferative activity against both C32 and A375 cells with IC50 values of 0.8 and 4.1 microg/ml, respectively. Interesting results were observed, also, with gallic acid that showed the highest cytotoxic activity against CaCo-2 (IC(50) 2.6 microg/ml). Overall, the results of this study suggest that D. lotus displays a good antioxidant activity and has antiproliferative effects. Both activities are related to identified phenolic compounds.
Collapse
Affiliation(s)
- Monica Rosa Loizzo
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Nutrition and Health Sciences, University of Calabria, 87036 Rende, CS, Italy.
| | | | | | | | | | | | | | | |
Collapse
|
15
|
Peng Y, Deng Z, Wang C. Preparation and prodrug studies of quercetin pentabenzensulfonate. YAKUGAKU ZASSHI 2009; 128:1845-9. [PMID: 19043305 DOI: 10.1248/yakushi.128.1845] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Pentabenzensulfonate (QPBS), a potential prodrug for quercetin, was designed and synthesized in high yield. It possesses better physical properties such as solubility, lipid/water partition coefficient, LogP, and hydrolysis kinetics than its original form. The LogP value (2.04) and the half-life of the hydrolysis value (3.85 h) show that oral bioavailability is improved evidently compared with that of quercetin. These results indicate that QPBS can be considered as a potential prodrug for quercetin.
Collapse
Affiliation(s)
- You Peng
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | | | | |
Collapse
|
16
|
Giuliani C, Noguchi Y, Harii N, Napolitano G, Tatone D, Bucci I, Piantelli M, Monaco F, Kohn LD. The flavonoid quercetin regulates growth and gene expression in rat FRTL-5 thyroid cells. Endocrinology 2008; 149:84-92. [PMID: 17962351 DOI: 10.1210/en.2007-0618] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Quercetin is the most consumed flavonoid present in fruits and vegetables. There has been increased interest in the possible health benefits of quercetin and other flavonoids. Because it is reported that these compounds have some antithyroid properties, we were interested whether, and by what mechanism, quercetin might regulate thyroid cell growth and function. In this report we show that quercetin inhibits thyroid cell growth in association with inhibition of insulin-modulated phosphatidylinositol 3-kinase-Akt kinase activity. Furthermore, quercetin decreases TSH-modulated RNA levels of the thyroid-restricted gene sodium/iodide symporter (NIS). We associated down-regulation of NIS RNA levels with inhibition of iodide uptake at comparable quercetin concentrations and could show that the inhibitory effect of quercetin on NIS RNA levels and iodide uptake is reproduced by inhibitors of the phospholipase-A(2)/lipoxygenase pathway. The specific inhibitor of protein kinase A, H89, only partially inhibited TSH-increased NIS expression and did not reproduce the quercetin effect. The quercetin studies thus reveal that the phospholipase-A(2)/lipoxygenase pathway appears to play an important role in TSH regulation of NIS gene expression, whereas quercetin inhibition of growth appears to involve an effect on insulin/IGF-I-Akt signaling. The data raise the possibility that quercetin may be a novel disruptor of thyroid function, which has potential effects on, or use in, the therapy of thyroid diseases.
Collapse
Affiliation(s)
- Cesidio Giuliani
- Department of Medicine and Aging, University G. D'Annunzio, 66013 Chieti, Italy.
| | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Abstract
Phytoestrogens are estrogen-like substances produced by plants that account for some of the constituents present in vegetation that may be responsible for the health benefits of a diet rich in fruit and vegetables. Phytoestrogens have a plethora of different actions that they are capable of exerting on cellular metabolism. This review will focus on some of the major non-estrogen receptor-mediated cellular effects used by phytoestrogens and will draw attention to the fact that while they may have a number of beneficial effects, particularly in offering a protective effect against some hormone-dependent cancers, such as breast and prostate cancer, they may also have possible unfavorable effects by interfering with the functioning of normal cellular activities such as receptor-mediated signal transduction and DNA replication, as well as being genotoxic, mutagenic and promoting the proliferation of some cancer cells.
Collapse
Affiliation(s)
- Jan H J Martin
- University of Wolverhampton, Research Institute of Healthcare Science, Wulfruna Street, Wolverhampton, UK.
| | | | | |
Collapse
|
18
|
Ye B, Aponte M, Dai Y, Li L, Ho MCD, Vitonis A, Edwards D, Huang TN, Cramer DW. Ginkgo biloba and ovarian cancer prevention: Epidemiological and biological evidence. Cancer Lett 2007; 251:43-52. [PMID: 17194528 DOI: 10.1016/j.canlet.2006.10.025] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2006] [Revised: 10/24/2006] [Accepted: 10/26/2006] [Indexed: 10/23/2022]
Abstract
There is considerable interest in herbal therapies for cancer prevention but often with little scientific evidence to support their use. In this study, we examined epidemiological data regarding effects of commonly used herbal supplements on risk for ovarian cancer and sought supporting biological evidence. 4.2% of 721 controls compared to 1.6% of 668 cases regularly used Ginkgo biloba for an estimated relative risk (and 95% confidence interval) of 0.41 (0.20,0.84) (p=0.01); and the effect was most apparent in women with non-mucinous types of ovarian cancer, RR=0.33 (0.15,0.74) (p=0.007). In vitro experiments with normal and ovarian cancer cells showed that Ginkgo extract and its components, quercetin and ginkgolide A and B, have significant anti-proliferative effects ( approximately 40%) in serous ovarian cancer cells, but little effect in mucinous (RMUG-L) cells. For the ginkgolides, the inhibitory effect appeared to be cell cycle blockage at G0/G1 to S phase. This combined epidemiological and biological data provide supportive evidence for further studies of the chemopreventive or therapeutic effects of Ginkgo and ginkgolides on ovarian cancer.
Collapse
Affiliation(s)
- Bin Ye
- Laboratory of Gynecologic Oncology and Epidemiology, Department of Obstetrics and Gynecology, Brigham and Women's Hospital, Harvard Medical School, Dana-Farber Cancer Center, USA.
| | | | | | | | | | | | | | | | | |
Collapse
|
19
|
Abstract
Epidemiological studies have noted a consistent association between the consumption of diets rich in fruits and vegetables and a lower risk for chronic diseases including cancer and cardiovascular disease. There is accumulating evidence that much of the health-promoting potential of these plant foods may come from phytochemicals, bioactive compounds not designated as traditional nutrients. In strawberries, the most abundant of these are ellagic acid, and certain flavonoids: anthocyanin, catechin, quercetin and kaempferol. These compounds in strawberries have potent antioxidant power. Antioxidants help lower risk of cardiovascular events by inhibition of LDL-cholesterol oxidation, promotion of plaque stability, improved vascular endothelial function, and decreased tendency for thrombosis. Furthermore, strawberry extracts have been shown to inhibit COX enzymes in vitro, which would modulate the inflammatory process. Individual compounds in strawberries have demonstrated anticancer activity in several different experimental systems, blocking initiation of carcinogenesis, and suppressing progression and proliferation of tumors. Preliminary animal studies have indicated that diets rich in strawberries may also have the potential to provide benefits to the aging brain.
Collapse
|
20
|
Mouat MF, Kolli K, Orlando R, Hargrove JL, Grider A. The effects of quercetin on SW480 human colon carcinoma cells: a proteomic study. Nutr J 2005; 4:11. [PMID: 15748282 PMCID: PMC555539 DOI: 10.1186/1475-2891-4-11] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2005] [Accepted: 03/04/2005] [Indexed: 12/02/2022] Open
Abstract
Background High fruit and vegetable intake is known to reduce the risk of colon cancer. To improve understanding of this phenomenon the action of different phytochemicals on colon cells has been examined. One such compound is quercetin that belongs to the group known as flavonoids. The purpose of this study was to determine the influence of quercetin on the proteome of the SW480 human colon adenocarcinoma cell line, specifically to identify proteins that could be the molecular targets of quercetin in its amelioration of the progression of colon cancer. To this end, two-dimensional gel electrophoresis and mass spectrometry were used to identify proteins that underwent a change in expression following treatment of the cells with 20 μM quercetin. This could elucidate how quercetin may reduce the progression of colon cancer. Results Quercetin treatment of the SW480 human colon cancer cells was found to result in the decreased expression of three proteins and the increased expression of one protein. The identified proteins with decreased expression were type II cytoskeletal 8 keratin and NADH dehydrogenase Fe-S protein 3. The other protein with decreased expression was not identified. The protein with increased expression belonged to the annexin family. Conclusion Several proteins were determined to have altered expression following treatment with quercetin. Such changes in the levels of these particular proteins could underlie the chemo-protective action of quercetin towards colon cancer.
Collapse
Affiliation(s)
- Michael F Mouat
- Department of Foods and Nutrition, University of Georgia, Athens, Georgia 30602, USA
| | - Kumar Kolli
- Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia 30602, USA
| | - Ronald Orlando
- Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia 30602, USA
| | - James L Hargrove
- Department of Foods and Nutrition, University of Georgia, Athens, Georgia 30602, USA
| | - Arthur Grider
- Department of Foods and Nutrition, University of Georgia, Athens, Georgia 30602, USA
| |
Collapse
|
21
|
Müller R, Klug J, Rodewald M, Meinhardt A. Macrophage migration inhibitory factor suppresses transforming growth factor-β2 secretion in cultured rat testicular peritubular cells. Reprod Fertil Dev 2005; 17:435-8. [PMID: 15899155 DOI: 10.1071/rd04061] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2004] [Accepted: 01/09/2005] [Indexed: 11/23/2022] Open
Abstract
Cytokines have direct effects on testicular cell functions and a number of cytokines are produced constitutively within the testis, even in the absence of immune-activation events. There is clear evidence that cytokines play a dual role as important regulatory factors in the normal function of the testis, as well as in testicular inflammation. The pro-inflammatory cytokine macrophage migration inhibitory factor (MIF) is expressed locally in the testis and has direct effects on peritubular cells, which, in turn, produce anti-inflammatory mediators, including transforming growth factor (TGF)-β2. In the present study, we investigated the function of MIF by examining its effect on the secretion of TGF-β2 in peritubular cells. Expression of TGF-β2 mRNA was shown by reverse transcription–polymerase chain reaction in peritubular cells isolated from 19-day-old rat testis. The addition of recombinant MIF to cultured peritubular cells resulted in a dose-dependent decrease in TGF-β2 secretion up to 52% of control levels after 48 h, which was significant for all doses investigated (10–100 ng mL−1 MIF). Inhibition of TGF-β2 secretion was sustained for 72 h for the highest dose of MIF used (100 ng mL−1). No effect of MIF was observed on TGF-β2 mRNA expression levels, as shown by real-time polymerase chain reaction. These results suggest that the pro-inflammatory cytokine MIF can shift the cytokine balance from the immunosuppressive state towards an inflammatory reaction, potentially through the inhibition of TGF-β2 secretion by peritubular cells.
Collapse
Affiliation(s)
- Ruth Müller
- Department of Anatomy and Cell Biology, Justus-Liebig-University, Giessen, Germany
| | | | | | | |
Collapse
|
22
|
Shi M, Wang FS, Wu ZZ. Synergetic anticancer effect of combined quercetin and recombinant adenoviral vector expressing human wild-type p53, GM-CSF and B7-1 genes on hepatocellular carcinoma cells in vitro. World J Gastroenterol 2003; 9:73-8. [PMID: 12508355 PMCID: PMC4728253 DOI: 10.3748/wjg.v9.i1.73] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: This study investigated the anti-cancer effect of combined quercetin and a recombinant adenovirus vector expressing the human p53, GM-CSF and B7-1 genes (designated BB-102) on human hepatocellular carcinoma (HCC) cell lines in vitro.
METHODS: The sensitivity of HCC cells to anticancer agents was evaluated by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay. The viability of cells infected with BB-102 was determined by trypan blue exclusion. The expression levels of human wild-type p53, GM-CSF and B7-1 genes were determined by Western blot, enzyme-linked immunosorbent assay (ELISA) and flow cytometric analysis, respectively. The apoptosis of BB-102-infected or quercetin-treated HCC cells was detected by terminal deoxynucleotidyl transferase (TdT) assay or DNA ladder electrophoresis.
RESULTS: Quercetin was found to suppress proliferation of human HCC cell lines BEL-7402, HuH-7 and HLE, with peak suppression at 50 μmol/L quercetin. BB-102 infection was also found to significantly suppress proliferation of HCC cell lines. The apoptosis of BB-102-infected HCC cells was greater in HLE and HuH-7 cells than in BEL-7402 cells. Quercetin did not affect the expression of the three exogenous genes in BB-102-infected HCC cells (P > 0.05), but it was found to further decrease proliferation and promote apoptosis of BB-102-infected HCC cells.
CONCLUSION: BB-102 and quercetin synergetically suppress HCC cell proliferation and induce HCC cell apoptosis, suggesting a possible use as a combined anti-cancer agent.
Collapse
Affiliation(s)
- Ming Shi
- Division of Biological Engineering, Institute of Infectious Disease, the 302 Hospital of PLA, 26 Fengtai Lu, Beijing 100039, China
| | | | | |
Collapse
|
23
|
Kuo SM. Flavonoids and gene expression in mammalian cells. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2003; 505:191-200. [PMID: 12083463 DOI: 10.1007/978-1-4757-5235-9_18] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Flavonoids appear to regulate the expression of many genes. As expected, when multiple flavonoids were compared in one study, structure-specificity was always observed. Unfortunately, little information is available regarding the proportion of contribution of various structural elements. Also, we have very limited information on their molecular mechanisms of action. The affinity of flavonoids for ER could explain the stimulatory effect on genes with ERE but other modes of action apparently also exist and need to be further explored. Physiological relevance is always a concern when investigating the regulation of gene expression by environmental chemicals such as flavonoids. One factor of concern is the in vivo concentration of flavonoids. Besides intestinal cells, liver cells and skin cells, other tissues obtain flavonoids through blood circulation. Thus, plasma concentrations of flavonoids are normally discussed. Steady state plasma concentrations of flavonoids are usually not much higher than 1 microM even in populations that consume large amounts of plant material. This concentration is relatively low compared to the concentrations of flavonoids that were commonly used in cell culture systems to demonstrate their effectiveness. Nevertheless, we have evidence that some flavonoids may accumulate in the cell. The effect of quercetin on metallothionein expression in Caco-2 cells persisted for at least 24 hours after its removal from the culture medium (Kuo et al., 1998). Also, long-term treatment of cultured cells with quercetin at low concentrations led to a similar effect on metallothionein expression as one high concentration treatment (Kuo et al., 2001). If intracellular accumulation of certain flavonoids is a shared characteristic for various cell types, it implies that routine ingestion of flavonoids could lead to biological effects at the concentration lower than predicted from a single treatment. Experiments to address possible cell/tissue accumulation of flavonoids are greatly needed.
Collapse
Affiliation(s)
- Shiu-Ming Kuo
- Department of Physical Therapy, Exerciseand Nutrition Sciences, State University of New York at Buffalo, 14214, USA
| |
Collapse
|
24
|
Abendstein B, Stadlmann S, Knabbe C, Buck M, Müller-Holzner E, Zeimet AG, Marth C, Obrist P, Krugmann J, Offner FA. Regulation of transforming growth factor-beta secretion by human peritoneal mesothelial and ovarian carcinoma cells. Cytokine 2000; 12:1115-9. [PMID: 10880260 DOI: 10.1006/cyto.1999.0632] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This study was conducted to compare the secretion of TGF-beta isoforms by human ovarian carcinoma (OVCA) cell lines (n=12) and human peritoneal mesothelial cells (HPMC;n=6) and to examine the regulation of their production by inflammatory cytokines. TGF-beta isoforms were furthermore analysed in OVCA-associated ascitic fluids. HPMC constitutively produced considerable amounts of TGF-beta1 (median 42 pg/10(5)cells; range 7-98) but only minimal amounts of TGF-beta2 (median 0.8 pg/10(5)cells; range 0-1.5). Treatment of HPMC with IL-1beta (10 ng/ml) resulted in a significant elevation of the secretion of both TGF-beta1 (median 187 pg/10(5)cells; range 71-264;P<0.001) and TGF-beta2 (median 1.8 pg/10(5)cells; range 0-13;P<0.01). In OVCA TGF-beta1 and TGF-beta2 were detected in 7/12 and 11/12 of the cell lines, respectively. The levels detected varied widely for TGF-beta1 (median 25 pg/10(5)cells; range 0-410) as well as for TGF-beta2 (median 14 pg/10(5)cells; range 0-419) and there was no correlation between the two isoforms. In contrast to HPMC, TGF-beta secretion by OVCA was not affected by any of the inflammatory cytokines tested. TGF-beta3 could not be detected in supernatants, neither in OVCA nor in HPMC. In ascitic fluids the median level of TGF-beta1 (median 5443 pg/ml; range 737-14687) was 10-fold higher than the level of TGF-beta2 (median 545 pg/ml; range 172-3537). The present data provide a model for the analysis of the molecular mechanisms of aberrant TGF-beta production by OVCA and support the hypothesis that HPMC are an important source of ascitic TGF-beta.
Collapse
Affiliation(s)
- B Abendstein
- Department of Obstetrics and Gynecology, University of Innsbruck, Austria
| | | | | | | | | | | | | | | | | | | |
Collapse
|
25
|
Ranelletti FO, Maggiano N, Serra FG, Ricci R, Larocca LM, Lanza P, Scambia G, Fattorossi A, Capelli A, Piantelli M. Quercetin inhibits p21-RAS expression in human colon cancer cell lines and in primary colorectal tumors. Int J Cancer 2000. [PMID: 10652438 DOI: 10.1002/(sici)1097-0215(20000201)85:3%3c438::aid-ijc22%3e3.0.co;2-f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Immunocytochemical studies have revealed that 10 microM quercetin reduced the steady state levels of p21-ras proteins in both colon cancer cell lines and primary colorectal tumors. These findings were confirmed by Western blot and flow cytometric analysis showing that the inhibition of p21-ras expression by quercetin was time- and concentration-dependent. Twenty-four-hour treatment with 10 microM quercetin reduced p21-ras levels to about 50% of control values. Quercetin was similarly effective in inhibiting the expression of K-, H-, and N-ras proteins. Moreover, the effect of quercetin on ras oncogene expression was not dependent on the cell cycle position of colon cancer cells and appeared to be specific and not merely a consequence of overall inhibition of protein synthesis. Northern blot analysis revealed that quercetin produced in colon cancer cells an early (30 min) reduction of the steady state levels of K-, H-, and N-ras mRNAs. This reduction was also present after 6 hr of flavonoid treatment. These effects of quercetin suggest a possible chemopreventive role for this compound in colorectal carcinogenesis.
Collapse
Affiliation(s)
- F O Ranelletti
- Institute of Histology, Università Cattolica del S. Cuore, Roma, Italy.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
26
|
Ranelletti FO, Maggiano N, Serra FG, Ricci R, Larocca LM, Lanza P, Scambia G, Fattorossi A, Capelli A, Piantelli M. Quercetin inhibits p21-RAS expression in human colon cancer cell lines and in primary colorectal tumors. Int J Cancer 2000. [DOI: 10.1002/(sici)1097-0215(20000201)85:3<438::aid-ijc22>3.0.co;2-f] [Citation(s) in RCA: 108] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
27
|
Caltagirone S, Ranelletti FO, Rinelli A, Maggiano N, Colasante A, Musiani P, Aiello FB, Piantelli M. Interaction with type II estrogen binding sites and antiproliferative activity of tamoxifen and quercetin in human non-small-cell lung cancer. Am J Respir Cell Mol Biol 1997; 17:51-9. [PMID: 9224209 DOI: 10.1165/ajrcmb.17.1.2728] [Citation(s) in RCA: 72] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
The antiestrogen tamoxifen is thought to antagonize the effects of estrogens by competing with them for estrogen receptor (ER) binding. However, tarnoxifen can also reverse multidrug resistance, synergize with cisplatin cytotoxicity, and inhibit growth in ER-negative lung cancer cells. In addition to ERs, rat and human target tissues contain a second binding macromolecule termed the type II estrogen binding site (type II EBS). It has been shown that tamoxifen and flavonoids, a widely distributed class of natural substances with a variety of biologic actions, bind to type II EBS and inhibit the growth of several tumor cell types. At present, conflicting data about ERs and an absence of data about type II EBSs exist for lung tumors. We have tested non-small-cell lung carcinoma cell lines and primary tumor cells for the presence of ERs and type II EBSs and have evaluated the effects of tamoxifen and quercetin (pentahydroxyflavone) on the growth of these cells. Using a whole-cell assay and nuclear and cytosolic radiobinding experiments with [3H]estradiol as tracer, we have found that SK-LU1, SW900, ChaGo-K-1, H441, H661, and A549 cells, as well as primary tumors, bind estrogen specifically. This binding results mainly from the presence of a large number of type II EBSs, whereas ERs are absent or present at low concentrations. Type II EBSs bound tamoxifen and quercetin with similar affinity. Cell counts and a thymidine incorporation assay showed that both compounds inhibit cell growth in a concentration-dependent manner at concentrations ranging from 10 nM to 1 microM. Neither ipriflavone, an isoflavone, nor rutin, the 3-rhamnosylglucoside of quercetin, bound type II EBSs or inhibited cell growth. These findings suggest that tamoxifen and quercetin could regulate lung cancer cell growth through a binding interaction with type II EBSs. This mechanism could also be active in vivo, in that we have observed that nuclear and cytosolic type II EBSs were present in all primary lung cancers tested (n = 12), and that tamoxifen and quercetin were effective in inhibiting in vitro bromodeoxyuridine (BrdU) incorporation and proliferation-cell nuclear antigen expression by neoplastic cells in these cancers.
Collapse
Affiliation(s)
- S Caltagirone
- Department of Pathology, Gabriele D'Annunzio University, Chieti, Italy
| | | | | | | | | | | | | | | |
Collapse
|
28
|
Kuo SM, Morehouse HF, Lin CP. Effect of antiproliferative flavonoids on ascorbic acid accumulation in human colon adenocarcinoma cells. Cancer Lett 1997; 116:131-7. [PMID: 9215855 DOI: 10.1016/s0304-3835(97)00183-3] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Dietary flavonoids were found to be antiproliferative for human colon cancer cells, Caco-2 and HT-29, and rat nontransformed intestinal crypt cells, IEC-6. The antiproliferative potency was found to be structure-dependent. We report here a correlation between the antiproliferative potency of these flavonoids and their ability to inhibit cellular accumulation of ascorbic acid (vitamin C). Caco-2, HT-29 and IEC-6 cells were found to accumulate ascorbic acid in a sodium-dependent fashion although some ascorbic acid may also enter the cells through sodium-independent mechanisms. Flavonoids that have been found to be antiproliferative, quercetin and genistein, inhibited the accumulation of ascorbic acid. The inhibition was dose-dependent and could be observed after as short as 10-min of incubation. The degree of inhibition of accumulation was more during rapid cell division as compared to post-confluency Caco-2 cells. Flavonoids that were found to show little antiproliferative effect, naringenin and catechin, also had little effect on ascorbic acid accumulation. The antiproliferative property of flavonoids could be linked to their ascorbic acid deprivation property.
Collapse
Affiliation(s)
- S M Kuo
- Nutrition Program, State University of New York at Buffalo, 14214, USA.
| | | | | |
Collapse
|
29
|
Kuo SM. Antiproliferative potency of structurally distinct dietary flavonoids on human colon cancer cells. Cancer Lett 1996; 110:41-8. [PMID: 9018079 DOI: 10.1016/s0304-3835(96)04458-8] [Citation(s) in RCA: 202] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Dietary flavonoids are known to be antiproliferative and may play an important role in cancer chemoprevention, especially cancers of the gastrointestinal tract, because of a direct contact with food. This study was designed to compare the antiproliferative potency of several structurally distinct dietary flavonoids in colon cancer cells, Caco-2 and HT-29, and in rat non-transformed intestinal crypt cells, IEC-6. Flavonoids varied significantly in their antiproliferative potency depending on the structural features but the observations were consistent among the three cell lines studied. Of the two most potent flavonoids, quercetin and genistein, the effect was found to be dose-dependent and chromatin condensation, an indication of apoptosis, was noticed. Quercetin was found to distribute throughout the cell with higher amounts in the perinuclear and nucleoli areas. The lack of specific cell membrane enrichment by quercetin was consistent with its lack of effect on the transepithelial resistance. While several flavonoids including quercetin were found to be unstable, the chemical instability did not correlate with the antiproliferative potency, although it may contribute to the antiproliferative effect.
Collapse
Affiliation(s)
- S M Kuo
- Nutrition Program, State University of New York at Buffalo, 14214, USA.
| |
Collapse
|
30
|
Calias P, Galanopoulos T, Maxwell M, Khayat A, Graves D, Antoniades HN, d'Alarcao M. Synthesis of inositol 2-phosphate-quercetin conjugates. Carbohydr Res 1996; 292:83-90. [PMID: 8870239 DOI: 10.1016/s0008-6215(96)91029-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The antiproliferative flavonoid, quercetin, is limited in its pharmacological utility by its low water solubility. In this paper, we describe the synthesis of two quercetin analogues prepared by linking the hydroxyl group at the 3- or 5-position of the flavonoid to the 1-hydroxyl group of myo-inositol-2-phosphate via a succinate diester linkage. The resulting conjugates were found to have dramatically enhanced water solubility relative to quercetin; the 5-linked quercetin analogue 2 had a water solubility of > 300 mg/mL at 20 degrees C. Comparison of the in vitro cytotoxicity and antiproliferative activity of conjugate 2 with those of quercetin toward cultured human colon adenocarcinoma (SW480) and human glioblastoma (U87MG) cells indicated that this modification of quercetin does not significantly diminish its activity in these assays.
Collapse
Affiliation(s)
- P Calias
- Department of Chemistry, Tufts University, Medford, MA 02155, USA
| | | | | | | | | | | | | |
Collapse
|
31
|
Korkina LG, Afanas'ev IB. Antioxidant and chelating properties of flavonoids. ADVANCES IN PHARMACOLOGY (SAN DIEGO, CALIF.) 1996; 38:151-63. [PMID: 8895808 DOI: 10.1016/s1054-3589(08)60983-7] [Citation(s) in RCA: 182] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- L G Korkina
- Institute of Pediatric Hematology, Moscow, Russia
| | | |
Collapse
|
32
|
Rice-Evans CA, Miller NJ, Paganga G. Structure-antioxidant activity relationships of flavonoids and phenolic acids. Free Radic Biol Med 1996; 20:933-56. [PMID: 8743980 DOI: 10.1016/0891-5849(95)02227-9] [Citation(s) in RCA: 5125] [Impact Index Per Article: 183.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The recent explosion of interest in the bioactivity of the flavonoids of higher plants is due, at least in part, to the potential health benefits of these polyphenolic components of major dietary constituents. This review article discusses the biological properties of the flavonoids and focuses on the relationship between their antioxidant activity, as hydrogen donating free radical scavengers, and their chemical structures. This culminates in a proposed hierarchy of antioxidant activity in the aqueous phase. The cumulative findings concerning structure-antioxidant activity relationships in the lipophilic phase derive from studies on fatty acids, liposomes, and low-density lipoproteins; the factors underlying the influence of the different classes of polyphenols in enhancing their resistance to oxidation are discussed and support the contention that the partition coefficients of the flavonoids as well as their rates of reaction with the relevant radicals define the antioxidant activities in the lipophilic phase.
Collapse
Affiliation(s)
- C A Rice-Evans
- Division of Biochemistry and Molecular Biology, UMDS-Guy's Hospital, London, UK
| | | | | |
Collapse
|
33
|
Piantelli M, Maggiano N, Ricci R, Larocca LM, Capelli A, Scambia G, Isola G, Natali PG, Ranelletti FO. Tamoxifen and quercetin interact with type II estrogen binding sites and inhibit the growth of human melanoma cells. J Invest Dermatol 1995; 105:248-53. [PMID: 7636308 DOI: 10.1111/1523-1747.ep12317599] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The mechanism of the antiproliferative activity of tamoxifen on melanoma cells in vitro and in vivo is poorly understood, as it is not mediated by the antiestrogenic properties of tamoxifen. Using a whole-cell assay and nuclear and cytosolic radio-binding experiments with [3H]-estradiol as tracer, we found that MNT1, M10, and M14 melanoma cell lines as well as primary tumors expressed type II estrogen binding sites that bind tamoxifen and the flavonoid quercetin with similar affinity (KD 10-25 nM). Cell count and clonogenic assay showed both compounds to inhibit melanoma cell growth in a concentration-dependent manner in the range of concentrations between 1 nM and 1 microM. Neither the pure antiestrogen ICI-182780 nor the 3-rhamnosylglucoside of quercetin, rutin, bound to type II estrogen binding sites or inhibited cell growth. Our results suggesting that tamoxifen and quercetin can inhibit melanoma cell growth by interacting with type II estrogen binding sites help explain the reported effectiveness of tamoxifen, particularly in estrogen-receptor-negative tumors, and stress the potential role of quercetin in the treatment of melanoma.
Collapse
Affiliation(s)
- M Piantelli
- Department of Human Pathology, G. D'Annunzio University, Chieti, Italy
| | | | | | | | | | | | | | | | | |
Collapse
|