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Qin L, Yang L, Shiraiwa M, Faiola F, Zhong H, Sonne C, Yang Y, Liu S, Liu G, Zheng M, Jiang G. Unexpected hydroxyl radical production in brewed tea under sunlight. PNAS NEXUS 2024; 3:pgae015. [PMID: 38274119 PMCID: PMC10810332 DOI: 10.1093/pnasnexus/pgae015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Accepted: 01/05/2024] [Indexed: 01/27/2024]
Abstract
Tea is one of the world's most popular and widely consumed beverages. It is a common pastime to enjoy a cup of tea in the sunshine. However, little attention has been given to understanding the possible photochemical reactions occurring beneath the calm surface of brewed tea. Epigallocatechin gallate (EGCG), which is widely used in food and beverages, is the most significant active ingredient found in tea. In this study, we investigated the presence of free radicals in both an aqueous EGCG solution and brewed tea under simulated sunlight conditions. To our surprise, we unexpectedly observed the production of hydroxyl radicals (•OH) in brewed tea. It was found that sunlight irradiation played a critical role in the formation of •OH, independent of the presence of metal ions. Furthermore, we demonstrated that the •OH generated from the EGCG aqueous solution induced cell cytotoxicity and DNA damage in vitro. Considering the crucial role of •OH in various fields, including human health and the environment, it is important to further explore the practical implications of •OH production in brewed tea under sunlight. In summary, our study unveils the unexpected formation of •OH in brewed tea and emphasizes the significance of sunlight-induced reactions. The observed cytotoxic and DNA-damaging effects of •OH emphasize the importance of understanding the potential health consequences associated with tea consumption. Further research in this area will contribute to a better understanding of the broader implications of •OH production in brewed tea under sunlight.
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Affiliation(s)
- Linjun Qin
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- College of Resources and Environment, University of the Chinese Academy of Sciences, Beijing 100190, China
| | - Lili Yang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- College of Resources and Environment, University of the Chinese Academy of Sciences, Beijing 100190, China
| | - Manabu Shiraiwa
- Department of Chemistry, University of California, Irvine, CA 92697, USA
| | - Francesco Faiola
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- College of Resources and Environment, University of the Chinese Academy of Sciences, Beijing 100190, China
| | - Huan Zhong
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Christian Sonne
- Department for Bioscience, Arctic Research Centre, Aarhus University, Roskilde DK-4000, Denmark
| | - Yujue Yang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- College of Resources and Environment, University of the Chinese Academy of Sciences, Beijing 100190, China
| | - Shuting Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- College of Resources and Environment, University of the Chinese Academy of Sciences, Beijing 100190, China
| | - Guorui Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- College of Resources and Environment, University of the Chinese Academy of Sciences, Beijing 100190, China
- Institute of Environment and Health, Hangzhou Institute for Advanced Study, University of the Chinese Academy of Sciences, Hangzhou 310024, China
| | - Minghui Zheng
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- College of Resources and Environment, University of the Chinese Academy of Sciences, Beijing 100190, China
- Institute of Environment and Health, Hangzhou Institute for Advanced Study, University of the Chinese Academy of Sciences, Hangzhou 310024, China
| | - Guibin Jiang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- College of Resources and Environment, University of the Chinese Academy of Sciences, Beijing 100190, China
- Institute of Environment and Health, Hangzhou Institute for Advanced Study, University of the Chinese Academy of Sciences, Hangzhou 310024, China
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2
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Wang G, Wang J, Momeni MR. Epigallocatechin-3-gallate and its nanoformulation in cervical cancer therapy: the role of genes, MicroRNA and DNA methylation patterns. Cancer Cell Int 2023; 23:335. [PMID: 38129839 PMCID: PMC10740301 DOI: 10.1186/s12935-023-03161-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 11/22/2023] [Indexed: 12/23/2023] Open
Abstract
Green tea, a popular and healthy nonalcoholic drink consumed globally, is abundant in natural polyphenols. One of these polyphenols is epigallocatechin-3-gallate (EGCG), which offers a range of health benefits, such as metabolic regulation, antioxidant properties, anti-inflammatory effects, and potential anticancer properties. Clinical research has shown that EGCG can inhibit cancers in the male and female reproductive systems, including ovarian, cervical, endometrial, breast, testicular, and prostate cancers. Further research on cervical cancer has revealed the crucial role of epigenetic mechanisms in the initiation and progression of this type of cancer. These include changes to the DNA, histones, and non-coding RNAs, such as microRNAs. These changes are reversible and can occur even before genetic mutations, making them a potential target for intervention therapies. One promising approach to cancer prevention and treatment is the use of specific agents (known as epi-drugs) that target the cancer epigenome or epigenetic dysregulation. Phytochemicals, a group of diverse molecules, have shown potential in modulating cancer processes through their interaction with the epigenetic machinery. Among these, green tea and its main polyphenol EGCG have been extensively studied. This review highlights the therapeutic effects of EGCG and its nanoformulations on cervical cancer. It also discusses the epigenetic events involved in cervical cancer, such as DNA methylation and microRNA dysregulation, which may be affected by EGCG.
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Affiliation(s)
- Guichun Wang
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Jinyi Wang
- School of Clinical Medicine, Tsinghua University, Beijing, 100084, China.
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3
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Maluchenko NV, Feofanov AV, Studitsky VM. PARP-1-Associated Pathological Processes: Inhibition by Natural Polyphenols. Int J Mol Sci 2021; 22:11441. [PMID: 34768872 PMCID: PMC8584120 DOI: 10.3390/ijms222111441] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 10/18/2021] [Accepted: 10/21/2021] [Indexed: 02/06/2023] Open
Abstract
Poly (ADP-ribose) polymerase-1 (PARP-1) is a nuclear enzyme involved in processes of cell cycle regulation, DNA repair, transcription, and replication. Hyperactivity of PARP-1 induced by changes in cell homeostasis promotes development of chronic pathological processes leading to cell death during various metabolic disorders, cardiovascular and neurodegenerative diseases. In contrast, tumor growth is accompanied by a moderate activation of PARP-1 that supports survival of tumor cells due to enhancement of DNA lesion repair and resistance to therapy by DNA damaging agents. That is why PARP inhibitors (PARPi) are promising agents for the therapy of tumor and metabolic diseases. A PARPi family is rapidly growing partly due to natural polyphenols discovered among plant secondary metabolites. This review describes mechanisms of PARP-1 participation in the development of various pathologies, analyzes multiple PARP-dependent pathways of cell degeneration and death, and discusses representative plant polyphenols, which can inhibit PARP-1 directly or suppress unwanted PARP-dependent cellular processes.
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Affiliation(s)
- Natalya V. Maluchenko
- Biology Faculty, Lomonosov Moscow State University, Lenin Hills 1/12, 119234 Moscow, Russia; (A.V.F.); (V.M.S.)
| | - Alexey V. Feofanov
- Biology Faculty, Lomonosov Moscow State University, Lenin Hills 1/12, 119234 Moscow, Russia; (A.V.F.); (V.M.S.)
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Mikluko-Maklaya Str., 16/10, 117997 Moscow, Russia
| | - Vasily M. Studitsky
- Biology Faculty, Lomonosov Moscow State University, Lenin Hills 1/12, 119234 Moscow, Russia; (A.V.F.); (V.M.S.)
- Fox Chase Cancer Center, Cottman Avenue 333, Philadelphia, PA 19111, USA
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4
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Mo L, Zhao GL, Li XF, Xiao XL, He N, Ma JJ, Yu YG. Evaluation of the digestion and transport profiles and potential immunocompetence of puerarin and its acylated derivatives. Food Funct 2021; 12:5949-5958. [PMID: 34031685 DOI: 10.1039/d1fo00555c] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Acylation has become one of the most widely used methods to improve the lipid solubility and bioavailability of flavonoids. In this study, puerarin acid esters (PAES) with different chain lengths were synthesized via biocatalytic acylation. This was the first study to evaluate the digestion and transport profiles and immunocompetence of PAES. The relationship between the digestion and transport profiles and potential immunocompetence of the acylated derivatives in Caco-2 cell monolayers was also explored. Puerarin and PAES remained stable in gastric phases, whereas different degrees of hydrolysis of PAES were found in the intestine. PAES with less than 12 carbon chains were positively correlated with the degree of hydrolysis, while those with more than 12 carbon chains showed higher resistance to hydrolysis by the artificial human digestive juice. The apparent permeability coefficients of puerarin, puerarin acetate, puerarin propanoate, puerarin butyrate, puerarin hexanoate, puerarin octanate and puerarin laurate were 1.62 ± 0.09, 1.70 ± 0.15, 1.89 ± 0.19, 1.86 ± 0.18, 2.29 ± 0.12, 4.06 ± 1.01 and 2.32 ± 0.88 × 10-6 cm s-1, respectively, in Caco-2 cell monolayers. The results of the immune factor assays indicated that puerarin propanoate, puerarin hexanoate and puerarin myristate could significantly promote the secretion of IL-6, TNF-α and IL-10. These findings suggested that a better absorption could be predicted after oral intake using PAES. Meanwhile, the concentration of esters and their metabolites (puerarin) found in the digestion and transport profiles directly affected their potential immunocompetence.
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Affiliation(s)
- Lan Mo
- School of Food Sciences and Engineering, South China University of Technology, Guangzhou 510641, China.
| | - Guang-Lei Zhao
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China
| | - Xiao-Feng Li
- School of Food Sciences and Engineering, South China University of Technology, Guangzhou 510641, China.
| | - Xing-Long Xiao
- School of Food Sciences and Engineering, South China University of Technology, Guangzhou 510641, China.
| | - Ning He
- The Laboratory of Advanced Design and Manufacturing for Precision Biomedical Devices, College of Mechanical and Vehicle Engineering, Hunan University, Changsha, 410082, China
| | - Juan-Juan Ma
- School of Food Sciences and Engineering, South China University of Technology, Guangzhou 510641, China.
| | - Yi-Gang Yu
- School of Food Sciences and Engineering, South China University of Technology, Guangzhou 510641, China.
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5
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Li X, Guo S, Xiong XK, Peng BY, Huang JM, Chen MF, Wang FY, Wang JN. Combination of quercetin and cisplatin enhances apoptosis in OSCC cells by downregulating xIAP through the NF-κB pathway. J Cancer 2019; 10:4509-4521. [PMID: 31528215 PMCID: PMC6746132 DOI: 10.7150/jca.31045] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 04/24/2019] [Indexed: 12/28/2022] Open
Abstract
While cisplatin is a first-line chemotherapeutic drug commonly used to treat patients with oral squamous cell carcinoma (OSCC), the cisplatin-resistance poses a major challenge for its clinical application. Recent studies have shown that quercetin, a natural flavonoid found in various plants and foods possesses an anti-cancer effect. The following study examined the combined effect of quercetin and cisplatin on OSCC apoptosis in vitro and in vivo (using a mice tumor model). We found that quercetin promotes cisplatin-induced apoptosis in human OSCC (cell lines Tca-8113 and SCC-15) by down-regulating NF-κB. Pretreatment of cancer cells with quercetin inhibited the phosphorylation Akt and IKKβ, and led to the suppression of NF-κB and anti-apoptotic protein xIAP. In addition, we observed that the pretreatment of cancer cells with quercetin improves extrinsic and intrinsic apoptosis by activating caspase-8 and caspase-9, respectively. Our in vivo data also indicated that the combination of quercetin and cisplatin may inhibit the xenograft growth in mice. To sum up, our results provide a new evidence for the application of quercetin and cisplatin in OSCC therapy.
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Affiliation(s)
- Xin Li
- Guangdong Provincial Center for Disease Control and Prevention, 160 Qunxian Road, Dashi, Panyu District, Guangzhou, Guangdong Province, P.R. China, 511430
| | - Shu Guo
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou, Guangdong Province, P.R. China, 510655
| | - Xi-Kun Xiong
- Guangdong Provincial Center for Disease Control and Prevention, 160 Qunxian Road, Dashi, Panyu District, Guangzhou, Guangdong Province, P.R. China, 511430
| | - Bao-Ying Peng
- Guangdong Provincial Center for Disease Control and Prevention, 160 Qunxian Road, Dashi, Panyu District, Guangzhou, Guangdong Province, P.R. China, 511430
| | - Jun-Ming Huang
- Guangdong Provincial Center for Disease Control and Prevention, 160 Qunxian Road, Dashi, Panyu District, Guangzhou, Guangdong Province, P.R. China, 511430
| | - Mei-Fen Chen
- Guangdong Provincial Center for Disease Control and Prevention, 160 Qunxian Road, Dashi, Panyu District, Guangzhou, Guangdong Province, P.R. China, 511430
| | - Feng-Yan Wang
- Guangdong Provincial Center for Disease Control and Prevention, 160 Qunxian Road, Dashi, Panyu District, Guangzhou, Guangdong Province, P.R. China, 511430
| | - Jian-Ning Wang
- Department of Oral and Maxillofacial Surgery, Guanghua School of Stomatology, Hospital of Stomatology, Institute of Stomatological Research, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, 56, Ling Yuan Xi Road, Guangzhou, Guangdong Province, P.R. China, 510055
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6
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Ho HC, Huang CC, Lu YT, Yeh CM, Ho YT, Yang SF, Hsin CH, Lin CW. Epigallocatechin-3-gallate inhibits migration of human nasopharyngeal carcinoma cells by repressing MMP-2 expression. J Cell Physiol 2019; 234:20915-20924. [PMID: 31012106 DOI: 10.1002/jcp.28696] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 03/27/2019] [Accepted: 04/05/2019] [Indexed: 12/28/2022]
Abstract
Metastasis of the cancer cells to the regional lymph nodes parts of the body remains an important cause of treatment failure in nasopharyngeal carcinoma (NPC) patients. Epigallocatechin-3-gallate (EGCG), the most important ingredient in the green tea, has been reported to possess antioxidant and anticancer activities. However, the effects of EGCG on NPC cell metastasis are still unclear. In the present study, we examined the in vitro antimetastatic properties of EGCG on human NPC cells, NPC-39, HONE-1 and NPC-BM. The results revealed that EGCG considerably inhibited the migration abilities of three NPC cells. The matrix metalloproteinases-2 (MMP-2) activity and expression were also significantly inhibited by EGCG treatment. Furthermore, EGCG suppressed the phosphorylation of the Src signaling pathway. Moreover, blocking the Src pathway also inhibits MMP-2 expression and migration in the NPC cells. In conclusion, this study revealed that EGCG could inhibit the metastatic activity of human NPC cells by downregulating the protein expression of MMP-2 through modulation of the Src signaling pathway, suggesting that EGCG may be a potential candidate for chemoprevention of NPC.
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Affiliation(s)
- Hsu-Chueh Ho
- Department of Otolaryngology, Chung Shan Medical University Hospital, Taichung, Taiwan.,School of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Cheng-Chen Huang
- Department of Otolaryngology, Chung Shan Medical University Hospital, Taichung, Taiwan.,School of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Yen-Ting Lu
- Department of Otolaryngology, Chung Shan Medical University Hospital, Taichung, Taiwan.,School of Medicine, Chung Shan Medical University, Taichung, Taiwan.,Department of Otolaryngology, St. Martin De Porres Hospital, Chiayi, Taiwan
| | - Chia-Ming Yeh
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Yu-Ting Ho
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Shun-Fa Yang
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan.,Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Chung-Han Hsin
- Department of Otolaryngology, Chung Shan Medical University Hospital, Taichung, Taiwan.,School of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Chiao-Wen Lin
- Institute of Oral Sciences, Chung Shan Medical University, Taichung, Taiwan.,Department of Dentistry, Chung Shan Medical University Hospital, Taichung, Taiwan
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7
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Sun Y, Han Y, Song M, Charoensinphon N, Zheng J, Qiu P, Wu X, Xiao H. Inhibitory effects of nobiletin and its major metabolites on lung tumorigenesis. Food Funct 2019; 10:7444-7452. [DOI: 10.1039/c9fo01966a] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The present study demonstrated that the oral administration of nobiletin significantly inhibited lung carcinogenesis in mice, and these chemopreventive effects could be attributed to its metabolites that showed potent anti-cancer effects.
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Affiliation(s)
- Yue Sun
- Anhui Engineering Laboratory for Agro-products Processing
- State Key Laboratory of Tea Plant Biology and Utilization
- International Joint Laboratory on Tea Chemistry and Health Effects
- Anhui Agricultural University
- Hefei
| | - Yanhui Han
- Department of Food Science
- University of Massachusetts
- Amherst
- USA
| | - Mingyue Song
- Department of Food Science
- University of Massachusetts
- Amherst
- USA
- College of Food Science
| | | | - Jinkai Zheng
- Department of Food Science
- University of Massachusetts
- Amherst
- USA
- Institute of Agro-Products Processing Science and Technology
| | - Peiju Qiu
- Department of Food Science
- University of Massachusetts
- Amherst
- USA
- School of Pharmacy
| | - Xian Wu
- Department of Food Science
- University of Massachusetts
- Amherst
- USA
- Department of Kinesiology and Health
| | - Hang Xiao
- Department of Food Science
- University of Massachusetts
- Amherst
- USA
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8
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Gupta SC, Kunnumakkara AB, Aggarwal S, Aggarwal BB. Inflammation, a Double-Edge Sword for Cancer and Other Age-Related Diseases. Front Immunol 2018; 9:2160. [PMID: 30319623 PMCID: PMC6170639 DOI: 10.3389/fimmu.2018.02160] [Citation(s) in RCA: 140] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 08/31/2018] [Indexed: 12/12/2022] Open
Abstract
Increasing evidence from diverse sources during the past several years has indicated that long-term, low level, chronic inflammation mediates several chronic diseases including cancer, arthritis, obesity, diabetes, cardiovascular diseases, and neurological diseases. The inflammatory molecules and transcription factors, adhesion molecules, AP-1, chemokines, C-reactive protein (CRP), cyclooxygenase (COX)-2, interleukins (ILs), 5-lipooxygenase (5-LOX), matrix metalloproteinases (MMPs), nuclear factor (NF)-kB, signal transducer and activator of transcription 3 (STAT3), tumor necrosis factor (TNF), and vascular endothelial growth factor (VEGF) are molecular links between inflammation and chronic diseases. Thus, suppression of inflammatory molecules could be potential strategy for the prevention and therapy of chronic diseases. The currently available drugs against chronic diseases are highly expensive, minimally effective and produce several side effects when taken for long period of time. The focus of this review is to discuss the potential of nutraceuticals derived from “Mother Nature” such as apigenin, catechins, curcumin, ellagic acid, emodin, epigallocatechin gallate, escin, fisetin, flavopiridol, genistein, isoliquiritigenin, kaempferol, mangostin, morin, myricetin, naringenin, resveratrol, silymarin, vitexin, and xanthohumol in suppression of these inflammatory pathways. Thus, these nutraceuticals offer potential in preventing or delaying the onset of chronic diseases. We provide evidence for the potential of these nutraceuticals from pre-clinical and clinical studies.
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Affiliation(s)
- Subash Chandra Gupta
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, India
| | | | - Sadhna Aggarwal
- Department of Biotechnology, AIl India Institute of Medical Sciences, New Delhi, India
| | - Bharat B Aggarwal
- Inflammation Research Center, San Diego, California, CA, United States
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9
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Wang YQ, Lu JL, Liang YR, Li QS. Suppressive Effects of EGCG on Cervical Cancer. Molecules 2018; 23:E2334. [PMID: 30213130 PMCID: PMC6225117 DOI: 10.3390/molecules23092334] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 09/05/2018] [Accepted: 09/11/2018] [Indexed: 02/07/2023] Open
Abstract
Cervical cancer is the fourth most common gynecological cancer worldwide. Although prophylactic vaccination presents the most effective method for cervical cancer prevention, chemotherapy is still the primary invasive intervention. It is urgent to exploit low-toxic natural anticancer drugs on account of high cytotoxicity and side-effects of conventional agents. As a natural product, (-)-epigallocatechingallate (EGCG) has abilities in anti-proliferation, anti-metastasis and pro-apoptosis of cervical cancer cells. Moreover, EGCG also has pharmaceutical synergistic effects with conventional agents such as cisplatin (CDDP) and bleomycin (BLM). The underlying mechanisms of EGCG suppressive effects on cervical cancer are reviewed in this article. Further research directions and ambiguous results are also discussed.
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Affiliation(s)
- Ying-Qi Wang
- Tea Research Institute, Zhejiang University, # 866 Yuhangtang Road, Hangzhou 310058, China.
| | - Jian-Liang Lu
- Tea Research Institute, Zhejiang University, # 866 Yuhangtang Road, Hangzhou 310058, China.
| | - Yue-Rong Liang
- Tea Research Institute, Zhejiang University, # 866 Yuhangtang Road, Hangzhou 310058, China.
| | - Qing-Sheng Li
- Tea Research Institute, Zhejiang University, # 866 Yuhangtang Road, Hangzhou 310058, China.
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10
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Frenkel M, Slater R, Sapire K, Sierpina V. Complementary and Integrative Medicine in Lung Cancer: Questions and Challenges. J Altern Complement Med 2018; 24:862-871. [DOI: 10.1089/acm.2018.0175] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Affiliation(s)
- Moshe Frenkel
- Department of Family Medicine, The University of Texas Medical Branch at Galveston, Galveston, Texas
- Integrative Medicine Program, Institute of Oncology Meir Medical Center, Kfar Saba, Israel
| | - Robert Slater
- Department of Family Medicine, The University of Texas Medical Branch at Galveston, Galveston, Texas
| | - Kenneth Sapire
- Department of Anesthesia and Perioperative Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Victor Sierpina
- Department of Family Medicine, The University of Texas Medical Branch at Galveston, Galveston, Texas
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11
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Sak K. Intake of Individual Flavonoids and Risk of Carcinogenesis: Overview of Epidemiological Evidence. Nutr Cancer 2017; 69:1119-1150. [PMID: 29083244 DOI: 10.1080/01635581.2017.1367934] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Several epidemiological findings have demonstrated that specific flavonoids can be responsible for reduction of the risk of certain cancer types. However, these results are still rather limited, inconclusive and controversial. Therefore, in this comprehensive review article the findings reported to date about the associations between dietary intake of individual flavonoid compounds and cancer incidence are compiled and analyzed. Also, the possible reasons for inconsistencies are brought forth and discussed. As diet is a potentially modifiable factor in our behavioral choices, further large-scale prospective studies with longer follow-up times, different populations, various doses and exposure timing as well as diverse well-controlled confounders are highly needed to confirm or disprove the current epidemiological knowledge about the role of flavonoids on cancer risk. Regarding the promising data to date, more research on bioavailability, metabolism and biological action mechanisms of these plant secondary metabolites is also encouraged.
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Affiliation(s)
- Katrin Sak
- a NGO Praeventio , Näituse 22-3, Tartu , Estonia
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12
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Xiong J, Lin J, Wang A, Wang Y, Zheng Y, Sang X, Xu Y, Lu X, Zhao H. Tea consumption and the risk of biliary tract cancer: a systematic review and dose-response meta-analysis of observational studies. Oncotarget 2017; 8:39649-39657. [PMID: 28454105 PMCID: PMC5503640 DOI: 10.18632/oncotarget.16963] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Accepted: 03/29/2017] [Indexed: 01/11/2023] Open
Abstract
Recent studies have shown that tea consumption is associated with the reduced incidence of some types of cancer, possibly including biliary tract cancer. However, the epidemiological evidences for the association with risk of biliary tract cancer are contradictory. Thus, we performed meta-analysis of published observational studies to assess the association between tea consumption and risk of biliary tract cancer. Relevant studies were identified by searching PubMed, EMBASE, and ISI Web of Science published before October 2016. The Newcastle-Ottawa Scale was used to evaluate the quality of included studies, and publication bias was evaluated using funnel plots, and Begg's and Egger's tests. This meta-analysis includes eight studies comprising 18 independent reports. The incidence of biliary tract cancer reduced about 34% (significantly) for tea intake group in comparison with never intake group (summary odds ratio [OR] = 0.66; 95% confidence interval [CI] = 0.48-0.85). Additionally, an inverse relationship between tea intake and risk of biliary tract cancer was statistically significant in women (OR = 0.65; 95 % CI = 0.47-0.83), but not in men (OR = 0.86; 95% CI = 0.58-1.13). Dose- response analysis indicated that the risk of biliary tract cancer decreased by 4% with each additional cup of tea one day (relative risk [RR] = 0.96, 95% CI = 0.93-0.98, p = 0.001). In summary, tea intake is associated with decreased risk of biliary tract cancer, especially for women.
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Affiliation(s)
- Jianping Xiong
- Department of Liver Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jianzhen Lin
- Department of Liver Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Anqiang Wang
- Department of Liver Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yaqin Wang
- Department of Interventional Radiology, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Ying Zheng
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Science, University of Macau, Macau SAR, China
| | - Xinting Sang
- Department of Liver Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yiyao Xu
- Department of Liver Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xin Lu
- Department of Liver Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Haitao Zhao
- Department of Liver Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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13
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Pastoriza S, Pérez-Burillo S, Rufián-Henares JÁ. How brewing parameters affect the healthy profile of tea. Curr Opin Food Sci 2017. [DOI: 10.1016/j.cofs.2016.12.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Pastoriza S, Mesías M, Cabrera C, Rufián-Henares JA. Healthy properties of green and white teas: an update. Food Funct 2017. [DOI: 10.1039/c7fo00611j] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Green tea has been consumed for centuries in Japan, China and Morocco.
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Affiliation(s)
- S. Pastoriza
- Departamento de Nutrición y Bromatología
- Facultad de Farmacia
- Campus de Cartuja S/N
- 18071
- Universidad de Granada
| | - M. Mesías
- Instituto de Ciencia y Tecnología de Alimentos y Nutrición (ICTAN-CSIC)
- Madrid
- Spain
| | - C. Cabrera
- Departamento de Nutrición y Bromatología
- Facultad de Farmacia
- Campus de Cartuja S/N
- 18071
- Universidad de Granada
| | - J. A. Rufián-Henares
- Departamento de Nutrición y Bromatología
- Facultad de Farmacia
- Campus de Cartuja S/N
- 18071
- Universidad de Granada
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Khan S, Karmokar A, Howells L, Thomas AL, Bayliss R, Gescher A, Brown K. Targeting cancer stem-like cells using dietary-derived agents - Where are we now? Mol Nutr Food Res 2016; 60:1295-309. [PMID: 27060283 DOI: 10.1002/mnfr.201500887] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Revised: 01/20/2016] [Accepted: 01/21/2016] [Indexed: 12/17/2022]
Abstract
Diet has been linked to an overwhelming proportion of cancers. Current chemotherapy and targeted therapies are limited by toxicity and the development of resistance against these treatments results in cancer recurrence or progression. In vitro evidence indicates that a number of dietary-derived agents have activity against a highly tumorigenic, chemoradiotherapy resistant population of cells within a tumour. This population is associated with cancer recurrence and is therefore clinically significant. Targeting this subpopulation, termed cancer stem-like cells with dietary-derived agents provides a potentially low toxicity strategy to enhance current treatment regimens. In addition, dietary-derived compounds also provide a novel approach to cancer prevention strategies. This review focusses on selected diet-derived agents that have been shown to specifically target cancer stem-like cells using in vivo models, or in clinical trials. Furthermore, the potential limitations of these studies are discussed, and areas of research that need to be addressed to allow successful translation of dietary-derived agents to the clinical arena are highlighted.
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Affiliation(s)
- Sameena Khan
- Department of Cancer Studies, University of Leicester, Leicester, UK
- Department of Molecular and Cell Biology, University of Leicester, Leicester, UK
| | - Ankur Karmokar
- Department of Cancer Studies, University of Leicester, Leicester, UK
| | - Lynne Howells
- Department of Cancer Studies, University of Leicester, Leicester, UK
| | - Anne L Thomas
- Department of Cancer Studies, University of Leicester, Leicester, UK
| | - Richard Bayliss
- Department of Molecular and Cell Biology, University of Leicester, Leicester, UK
| | - Andreas Gescher
- Department of Cancer Studies, University of Leicester, Leicester, UK
| | - Karen Brown
- Department of Cancer Studies, University of Leicester, Leicester, UK
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Synergistic inhibitory effect of cetuximab and tectochrysin on human colon cancer cell growth via inhibition of EGFR signal. Arch Pharm Res 2016; 39:721-9. [DOI: 10.1007/s12272-016-0735-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Accepted: 03/14/2016] [Indexed: 01/30/2023]
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Sun D, Zhang W, Li N, Zhao Z, Mou Z, Yang E, Wang W. Silver nanoparticles-quercetin conjugation to siRNA against drug-resistant Bacillus subtilis for effective gene silencing: in vitro and in vivo. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 63:522-34. [PMID: 27040247 DOI: 10.1016/j.msec.2016.03.024] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 02/23/2016] [Accepted: 03/07/2016] [Indexed: 01/26/2023]
Abstract
Quercetin (Qe) exhibited extremely low water solubility, and thus, it was modified using silver nanoparticles (AgNPs). We fabricated AgNPs combined with Qe (AgNPs-Qe). The modification suggested that the synergistic properties of Qe enhanced the antibacterial activity of AgNPs. However, AgNPs-Qe exerted no effect on many kinds of drug-resistant bacteria, including Pseudomonas aeruginosa and Bacillus subtilis. RNA interference has considerable therapeutic potential because of its high specificity and potential capability to evade drug resistance. Therefore, we stabilized AgNPs-Qe with a layer of molecules (siRNA). The newly fabricated nanoparticles exerted improved effect on many kinds of bacteria, including the most prominent drug-resistant species B. subtilis. Agarose gel electrophoresis showed that the highest critical nitrogen-to-phosphorus (N/P) ratio occurred at a vector/siRNA with a w/w ratio of 7:1. Characterization experiment indicated that the diameter of siRNA/AgNPs-Qe was approximately 40 nm (40 ± 10 nm). Moreover, AgNPs-Qe were stabilized with a layer of siRNA that was approximately 10nm thick. Results of the in vitro study suggested that siRNA/AgNPs-Qe could destroy the cell wall and inhibit bacterial propagation. Meanwhile, the in vivo experiment on the animal bacteremia model, as well as the optical imaging of nude mice and their isolated organs, demonstrated that bacteria accumulated in the blood, heart, liver, spleen, lungs, and kidneys after the intravenous injection of B. subtilis. The bacteria in the blood and organs, as well as the inflamed cells in the tissues, gradually decreased after the mice received intravenous tail injection of siRNA/AgNPs-Qe for treatment. Both the in vitro and the in vivo studies exhibit that siRNA/AgNPs-Qe can be a potential nanoscale drug delivery system for B. subtilis targeting bacterimia.
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Affiliation(s)
- Dongdong Sun
- School of Life Sciences, Anhui Agricultural University, Hefei 230036, China
| | - Weiwei Zhang
- School of Life Sciences, Anhui Agricultural University, Hefei 230036, China
| | - Nuan Li
- School of Life Sciences, Anhui Agricultural University, Hefei 230036, China
| | - Zhiwei Zhao
- School of Life Sciences, Anhui Agricultural University, Hefei 230036, China
| | - Zhipeng Mou
- School of Life Sciences, Anhui Agricultural University, Hefei 230036, China
| | - Endong Yang
- School of Life Sciences, Anhui Agricultural University, Hefei 230036, China
| | - Weiyun Wang
- School of Life Sciences, Anhui Agricultural University, Hefei 230036, China.
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Butt MS, Ahmad RS, Sultan MT, Qayyum MMN, Naz A. Green tea and anticancer perspectives: updates from last decade. Crit Rev Food Sci Nutr 2016; 55:792-805. [PMID: 24915354 DOI: 10.1080/10408398.2012.680205] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Green tea is the most widely consumed beverage besides water and has attained significant attention owing to health benefits against array of maladies, e.g., obesity, diabetes mellitus, cardiovascular disorders, and cancer insurgence. The major bioactive molecules are epigallocatechin-3-gallate, epicatechin, epicatechin-3-gallate, epigallocatechin, etc. The anticarcinogenic and antimutagenic activities of green tea were highlighted some years ago. Several cohort studies and controlled randomized trials suggested the inverse association of green tea consumption and cancer prevalence. Cell culture and animal studies depicted the mechanisms of green tea to control cancer insurgence, i.e., induction of apoptosis to control cell growth arrest, altered expression of cell-cycle regulatory proteins, activation of killer caspases, and suppression of nuclear factor kappa-B activation. It acts as carcinoma blocker by modulating the signal transduction pathways involved in cell proliferation, transformation, inflammation, and metastasis. However, results generated from some research interventions conducted in different groups like smokers and nonsmokers, etc. contradicted with aforementioned anticancer perspectives. In this review paper, anticancer perspectives of green tea and its components have been described. Recent findings and literature have been surfed and arguments are presented to clarify the ambiguities regarding anticancer perspectives of green tea and its component especially against colon, skin, lung, prostate, and breast cancer. The heading of discussion and future trends is limelight of the manuscript. The compiled manuscript provides new avenues for researchers to be explored in relation to green tea and its bioactive components.
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Affiliation(s)
- Masood Sadiq Butt
- a National Institute of Food Science and Technology , University of Agriculture , Faisalabad , Pakistan
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20
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Chen ZM, Lin Z. Tea and human health: biomedical functions of tea active components and current issues. J Zhejiang Univ Sci B 2015; 16:87-102. [PMID: 25644464 DOI: 10.1631/jzus.b1500001] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Originating in China, tea and tea planting have spread throughout the world since the middle of the Tang dynasty. Now people from 160 countries in the world are accustomed to tea drinking. A brief history of tea's medicinal role in China and its spread to the world are introduced. The effectiveness of tea active components and tea drinking on major human diseases, including cancer, metabolic syndrome, cardiovascular disease, and neurodegenerative diseases, is discussed. Also presented are some related issues, such as the bioavailability of tea active components, the new formulations of tea polyphenols, and the safety for consumers of dietary supplements containing tea polyphenols.
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Affiliation(s)
- Zong-mao Chen
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China
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21
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Flores-Pérez A, Marchat LA, Sánchez LL, Romero-Zamora D, Arechaga-Ocampo E, Ramírez-Torres N, Chávez JD, Carlos-Reyes Á, Astudillo-de la Vega H, Ruiz-García E, González-Pérez A, López-Camarillo C. Differential proteomic analysis reveals that EGCG inhibits HDGF and activates apoptosis to increase the sensitivity of non-small cells lung cancer to chemotherapy. Proteomics Clin Appl 2015; 10:172-82. [PMID: 26175166 DOI: 10.1002/prca.201500008] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Revised: 06/11/2015] [Accepted: 07/09/2015] [Indexed: 12/29/2022]
Abstract
PURPOSE To search for regulated proteins in response to green tea (-)-epigallocatechin-3-gallate (EGCG) in A549 lung cancer cells. EXPERIMENTAL DESIGN 2DE and ESI/multistage MS (ESI-MS/MS) were performed to identify modulated proteins in A549 cells treated with EGCG. Cell migration was evaluated by transwell assays. RNA interference was used to silence the hepatoma-derived growth factor (HDGF). Caspase-3, caspase-9, and HDGF were immunodetected by Western blot assays. Flow cytometry was used for detection of mitochondrial membrane potential and apoptosis. RESULTS We found that HDGF expression was threefold suppressed by EGCG treatment. Downregulation of HDGF by EGCG was confirmed using anti-HDGF antibodies in three lung cancer cell lines. EGCG treatment and HDGF abrogation by RNA interference resulted in a decreased migration of A549 cells. In addition, EGCG induced a marked synergistic effect with cisplatin in cell death. Consistently, an enhanced cytotoxicity in HDGF-silenced cells was also found. Cell death was associated to increased apoptosis, disruption of the mitochondrial membrane potential, and activation of caspase-3 and caspase-9. CONCLUSION AND CLINICAL RELEVANCE Our data suggest for the first time that abrogation of HDGF by EGCG enhances cisplatin-induced apoptosis and sensitize A549 cells to chemotherapy. Therefore, we propose that decreasing the HDGF levels by using EGCG may represent a novel strategy in lung cancer therapy.
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Affiliation(s)
- Ali Flores-Pérez
- Genomics Sciences Program, Autonomous University of Mexico City, Mexico City, Mexico
| | - Laurence A Marchat
- Molecular Biomedicine Program, National School of Medicine and Homeopathy, National Polytechnic Institute, Mexico.,Biotechnology Program, National School of Medicine and Homeopathy, National Polytechnic Institute, Mexico
| | - Lidia López Sánchez
- Genomics Sciences Program, Autonomous University of Mexico City, Mexico City, Mexico
| | - Diana Romero-Zamora
- Genomics Sciences Program, Autonomous University of Mexico City, Mexico City, Mexico
| | | | - Nayeli Ramírez-Torres
- Genomics Sciences Program, Autonomous University of Mexico City, Mexico City, Mexico
| | - José Díaz Chávez
- Oncogenomics Laboratory, National Institute of Cancerology, Mexico
| | | | - Horacio Astudillo-de la Vega
- Laboratory of Translational Cancer Research and Cellular Therapy, Oncology Hospital, Medical Center Siglo XXI, Mexico
| | - Erika Ruiz-García
- Translational Medicine Laboratory, National Institute of Cancerology, Mexico
| | | | - César López-Camarillo
- Genomics Sciences Program, Autonomous University of Mexico City, Mexico City, Mexico
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22
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Index-based dietary patterns and risk of lung cancer in the NIH–AARP diet and health study. Eur J Clin Nutr 2015; 70:123-9. [DOI: 10.1038/ejcn.2015.122] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Revised: 06/02/2015] [Accepted: 06/25/2015] [Indexed: 11/09/2022]
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Park MH, Hong JE, Park ES, Yoon HS, Seo DW, Hyun BK, Han SB, Ham YW, Hwang BY, Hong JT. Anticancer effect of tectochrysin in colon cancer cell via suppression of NF-kappaB activity and enhancement of death receptor expression. Mol Cancer 2015; 14:124. [PMID: 26123287 PMCID: PMC4487202 DOI: 10.1186/s12943-015-0377-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Accepted: 05/01/2015] [Indexed: 12/21/2022] Open
Abstract
Background Flavonoids are a diverse family of natural phenolic compounds commonly found in fruits and vegetables. Epidemiologic studies showed that flavonoids also reduce the risk of colon cancer. Tectochrysin is one of the major flavonoids of Alpinia oxyphylla Miquel. However, the anti-cancer effects and the molecular mechanisms of tectochrysin in colon cancer cells have not yet been reported. We investigated whether tectochrysin could inhibit colon cancer cell growth at 1, 5, 10 μg/ml. In in vivo study, we injected a tectochrysin treatment dose of 5 mg/kg to each mouse. Results Tectochrysin suppressed the growth of SW480 and HCT116 human colon cancer cells. The expression of DR3, DR4 and Fas were significantly increased, and pro-apoptotic proteins were also increased. Tectochrysin treatment also inhibited activity of NF-κB. A docking model indicated that tectochrysin binds directly to the p50 unit. In in vivo, tumor weights and volumes in mice were reduced when treated with tectochrysin. Tectochrysin leads to apoptotic cell death in colon cancer cells through activation of death receptors expression via the inhibition of NF-κB. Conclusions Tectochrysin can be a useful agent for the treatment of colon cancer cell growth as well as an adjuvant agent for chemo-resistant cancer cells growth.
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Affiliation(s)
- Mi Hee Park
- College of Pharmacy and Medical Research Center, Chungbuk National University, 194-31 Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk, 361-951, Republic of Korea.
| | - Ji Eun Hong
- College of Pharmacy and Medical Research Center, Chungbuk National University, 194-31 Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk, 361-951, Republic of Korea.
| | - Eun Sook Park
- College of Pharmacy and Medical Research Center, Chungbuk National University, 194-31 Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk, 361-951, Republic of Korea.
| | - Hee Sung Yoon
- College of Pharmacy and Medical Research Center, Chungbuk National University, 194-31 Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk, 361-951, Republic of Korea.
| | - Doo Won Seo
- College of Pharmacy and Medical Research Center, Chungbuk National University, 194-31 Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk, 361-951, Republic of Korea.
| | - Byung Kook Hyun
- College of Pharmacy and Medical Research Center, Chungbuk National University, 194-31 Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk, 361-951, Republic of Korea.
| | - Sang-Bae Han
- College of Pharmacy and Medical Research Center, Chungbuk National University, 194-31 Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk, 361-951, Republic of Korea.
| | - Young Won Ham
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT, USA.
| | - Bang Yeon Hwang
- College of Pharmacy and Medical Research Center, Chungbuk National University, 194-31 Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk, 361-951, Republic of Korea.
| | - Jin Tae Hong
- College of Pharmacy and Medical Research Center, Chungbuk National University, 194-31 Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk, 361-951, Republic of Korea.
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24
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Kim K, Vance TM, Chun OK. Estimated intake and major food sources of flavonoids among US adults: changes between 1999-2002 and 2007-2010 in NHANES. Eur J Nutr 2015; 55:833-843. [PMID: 26026481 DOI: 10.1007/s00394-015-0942-x] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Accepted: 05/23/2015] [Indexed: 12/14/2022]
Abstract
PURPOSE This study was conducted to: (1) demonstrate an updated method for estimating flavonoid intake of US adults by combining USDA flavonoid databases and NHANES food consumption data; (2) document the intake and major food sources of flavonoids among US adults; and (3) determine whether the intake and major sources of dietary flavonoids have changed during the past decade in the USA. METHODS A cross-sectional population-based study. Differences over time in the average daily intake and food sources of flavonoids were estimated using food consumption data from NHANES 1999-2002 (n = 8833) and 2007-2010 (n = 9801). RESULTS The total flavonoid intake of US adults aged 19 years and older remained unchanged between 1999-2002 (201.9 mg/d) and 2007-2010 (200.1 mg/d), with tea being the top food source of flavonoids. However, intake of anthocyanidins increased during this period, mainly due to greater consumption of berries and wine, which was consistent with the increase in per capita consumption of these foods based on USDA food availability data. CONCLUSIONS The results of this study provide updated information on flavonoid intake and food contributors and warrant further studies on the health implications of flavonoid intake.
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Affiliation(s)
- Kijoon Kim
- Department of Nutritional Sciences, University of Connecticut, 3624 Horsebarn Road Extension Unit 4017, Storrs, CT, 06269-4017, USA.,BOM Research Institute, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul, 151-742, Korea
| | - Terrence M Vance
- Department of Nutritional Sciences, University of Connecticut, 3624 Horsebarn Road Extension Unit 4017, Storrs, CT, 06269-4017, USA
| | - Ock K Chun
- Department of Nutritional Sciences, University of Connecticut, 3624 Horsebarn Road Extension Unit 4017, Storrs, CT, 06269-4017, USA.
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Li X, Huang JM, Wang JN, Xiong XK, Yang XF, Zou F. Combination of chrysin and cisplatin promotes the apoptosis of Hep G2 cells by up-regulating p53. Chem Biol Interact 2015; 232:12-20. [PMID: 25770930 DOI: 10.1016/j.cbi.2015.03.003] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Revised: 01/21/2015] [Accepted: 03/04/2015] [Indexed: 11/29/2022]
Abstract
Cisplatin is a chemotherapy drug commonly used for the treatment of human cancers, however, drug resistance poses a major challenge to clinical application of cisplatin in cancer therapy. Recent studies have shown that chrysin, a natural flavonoid widely found in various plants and foods, demonstrated effective anti-cancer activity. In the present study, we found that the combination chrysin and cisplatin significantly enhanced the apoptosis of Hep G2 cancer cells. Combination of chrysin and cisplatin increased the phosphorylation and accumulation of p53 through activating ERK1/2 in Hep G2 cells, which led to the overexpression of the pro-apoptotic proteins Bax and DR5 and the inhibition of the anti-apoptotic protein Bcl-2. In addition, combination of chrysin and cisplatin promoted both extrinsic apoptosis by activating caspase-8 and intrinsic apoptosis by increasing the release of cytochrome c and activating caspase-9 in Hep G2 cells. Our results suggest that combination of chrysin and cisplatin is a promising strategy for chemotherapy of human cancers that are resistant to cisplatin.
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Affiliation(s)
- Xin Li
- Department of Occupational Health and Occupational Medicine, School of Public Health and Tropical Medicine, Southern Medical University, 1838 Northern Guangzhou Avenue, Guangzhou, Guangdong Province 510515, PR China; Center for Disease Control and Prevention of Guangdong Province, 160 Qunxian Road, Dashi, Panyu District, Guangzhou, Guangdong Province 511430, PR China
| | - Jun-Ming Huang
- Center for Disease Control and Prevention of Guangdong Province, 160 Qunxian Road, Dashi, Panyu District, Guangzhou, Guangdong Province 511430, PR China
| | - Jian-Ning Wang
- Department of Oral and Maxillofacial Surgery, Guanghua School of Stomatology, Institute of Stomatological Research, Sun Yat-sen University, 56, Ling Yuan Xi Road, Guangzhou, Guangdong Province 510055, PR China
| | - Xi-Kun Xiong
- Center for Disease Control and Prevention of Guangdong Province, 160 Qunxian Road, Dashi, Panyu District, Guangzhou, Guangdong Province 511430, PR China
| | - Xing-Fen Yang
- Center for Disease Control and Prevention of Guangdong Province, 160 Qunxian Road, Dashi, Panyu District, Guangzhou, Guangdong Province 511430, PR China.
| | - Fei Zou
- Department of Occupational Health and Occupational Medicine, School of Public Health and Tropical Medicine, Southern Medical University, 1838 Northern Guangzhou Avenue, Guangzhou, Guangdong Province 510515, PR China.
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26
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Zhu G, Hua J, Wang Z, She F, Chen Y. Tea consumption and risk of gallbladder cancer: A meta-analysis of epidemiological studies. Mol Clin Oncol 2015; 3:613-618. [PMID: 26137276 DOI: 10.3892/mco.2015.489] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Accepted: 01/08/2015] [Indexed: 12/31/2022] Open
Abstract
Previous epidemiological studies investigating the association between tea consumption and the risk of gallbladder cancer have yielded inconsistent results. Therefore, we aimed to assess this association by conducting a meta-analysis of all available studies. A search was conducted through Pubmed, Embase, Chinese Biomedical literature Database and China Knowledge Resource Integrated Database to identify relevant studies on tea consumption and the risk of gallbladder cancer. A random-effects model was used to calculate the overall combined risk estimates. Six studies (4 case-control and 2 cohort studies), involving a total of 753 patients and 115,349 controls, were included in this meta-analysis. The overall combined odds ratio (OR) for tea consumption and gallbladder cancer was 0.67 [95% confidence interval (CI): 0.40-1.12, P=0.13]. Similar results were obtained for the high or moderate tea consumption vs. the low/non-consumption groups. However, our meta-analysis identified a significant association between tea consumption and reduced gallbladder cancer risk in women (OR=0.46, 95% CI: 0.26-0.81, P=0.008), but not in men (OR=0.43, 95% CI: 0.12-1.59, P=0.21). Therefore, the results of the present meta-analysis suggest that, according to the currently available epidemiological studies, tea consumption may reduce the risk of gallbladder cancer in women, but not in men. Further epidemiological studies are required to determine the association between tea consumption and the risk of gallbladder cancer.
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Affiliation(s)
- Guangwei Zhu
- Department of Hepatobiliary Surgery and Fujian Institute of Hepatobiliary Surgery, Union Hospital, Fujian Medical University, Fuzhou, Fujian 350001, P.R. China ; Key Laboratory of Ministry of Education for Gastrointestinal Cancer and Key Laboratory of Tumor Microbiology, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian 350001, P.R. China
| | - Jin Hua
- The First Clinic Medical College and The First Hospital, Fujian Medical University, Fuzhou, Fujian 350001, P.R. China
| | - Zhijian Wang
- The Affiliated People's Hospital, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350005, P.R. China
| | - Feifei She
- Key Laboratory of Ministry of Education for Gastrointestinal Cancer and Key Laboratory of Tumor Microbiology, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian 350001, P.R. China
| | - Yanling Chen
- Department of Hepatobiliary Surgery and Fujian Institute of Hepatobiliary Surgery, Union Hospital, Fujian Medical University, Fuzhou, Fujian 350001, P.R. China ; Key Laboratory of Ministry of Education for Gastrointestinal Cancer and Key Laboratory of Tumor Microbiology, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian 350001, P.R. China
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27
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Zhang L, Han Y, Xu L, Liang Y, Chen X, Li J, Wan X. The effects of co-administration of butter on the absorption, metabolism and excretion of catechins in rats after oral administration of tea polyphenols. Food Funct 2015; 6:2249-56. [DOI: 10.1039/c5fo00114e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A rapid UHPLC-MS/MS method was used to quantitatively determine the catechins in the plasma, feces and bile of rats after the oral administration of tea polyphenol or its combination with butter.
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Affiliation(s)
- Liang Zhang
- State Key Laboratory of Tea Plant Biology and Utilization
- Anhui Agricultural University
- Hefei 230036
- China
| | - Yuhui Han
- State Key Laboratory of Tea Plant Biology and Utilization
- Anhui Agricultural University
- Hefei 230036
- China
| | - Liwei Xu
- State Key Laboratory of Tea Plant Biology and Utilization
- Anhui Agricultural University
- Hefei 230036
- China
| | - Yuhong Liang
- State Key Laboratory of Tea Plant Biology and Utilization
- Anhui Agricultural University
- Hefei 230036
- China
| | - Xin Chen
- State Key Laboratory of Tea Plant Biology and Utilization
- Anhui Agricultural University
- Hefei 230036
- China
| | - Junsong Li
- Jiangsu Provincial TCM Engineering Technology Research Center of High Efficient Drug Delivery System (DDS)
- Nanjing 210023
- China
- College of Pharmacy
- Nanjing University of Chinese Medicine
| | - Xiaochun Wan
- State Key Laboratory of Tea Plant Biology and Utilization
- Anhui Agricultural University
- Hefei 230036
- China
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Kang KA, Piao MJ, Hyun JW. Fisetin induces apoptosis in human nonsmall lung cancer cells via a mitochondria-mediated pathway. In Vitro Cell Dev Biol Anim 2014; 51:300-9. [PMID: 25381036 DOI: 10.1007/s11626-014-9830-6] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Accepted: 09/29/2014] [Indexed: 12/20/2022]
Abstract
The present study investigated the apoptotic effects of fisetin, a phenolic compound, against the human nonsmall cell lung cancer cell line, NCI-H460. Fisetin showed dose-dependent cytotoxic activity against NCI-H460 cells, with 50% inhibition of cell viability occurring at a concentration of 75 μg/mL. Fisetin induced both the production of intracellular reactive oxygen species and apoptosis, as evidenced by apoptotic body formation, DNA fragmentation, an increase in the number of sub-G1 phase cells, and mitochondrial membrane depolarization. Moreover, fisetin significantly modulated the expression of apoptosis-associated proteins, resulting in reduced expression of B cell lymphoma-2, increased expression of Bcl-2-associated X protein, and activation of caspase-9 and caspase-3. In addition, pretreatment with a caspase inhibitor blocked fisetin-induced cell death.
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Affiliation(s)
- Kyoung Ah Kang
- School of Medicine, Jeju National University, Jeju, 690-756, Korea
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29
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Fraser K, Harrison SJ, Lane GA, Otter DE, Hemar Y, Quek SY, Rasmussen S. Analysis of Low Molecular Weight Metabolites in Tea Using Mass Spectrometry-Based Analytical Methods. Crit Rev Food Sci Nutr 2014; 54:924-37. [DOI: 10.1080/10408398.2011.619670] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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30
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Youn H, Jeong JC, Jeong YS, Kim EJ, Um SJ. Quercetin potentiates apoptosis by inhibiting nuclear factor-kappaB signaling in H460 lung cancer cells. Biol Pharm Bull 2014; 36:944-51. [PMID: 23727915 DOI: 10.1248/bpb.b12-01004] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The herbal flavonoid quercetin inhibits the growth of various cancer cells, but how it affects human cancer cells, particularly lung cancer cells, is unclear. We investigated the anticancer activity of quercetin and the underlying molecular mechanisms in non-small cell lung cancer (NSCLC) cells. Quercetin strongly inhibited cell proliferation, and increased sub-G1 and apoptotic cell populations regardless of p53 status. Quercetin-induced apoptosis was verified by caspase cleavage, Hoechst staining, trypan blue exclusion, and DNA fragmentation assays. Microarray analysis using H460 cells indicated that quercetin increased the expression of genes associated with death receptor signaling tumor necrosis factor-related apoptosis-inducing ligand receptor (TRAILR), caspase-10, interleukin (IL) 1R DNA fragmentation faotor 45 (DFF45), tumor necrosis factor receptor (TNFR) 1, FAS, inhibitor of kappaBalpha (IκBα)) and cell cycle inhibition growth arrest and DNA-damage inducible 45 (GADD45), p21(Cip1)), but decreased the expression of genes involved in nuclear factor (NF)-kappaB activation (NF-κB, IKKα). Further validation assays confirmed that quercetin inhibited growth by suppressing NF-κB and by increasing the expression of death receptors and cell cycle inhibitors. Taken together, these findings suggest that quercetin may be useful in the prevention and therapy of NSCLC.
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Affiliation(s)
- HyeSook Youn
- Department of Bioscience and Biotechnology, BK21 Graduate Program, Sejong University, Seoul, Korea
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31
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Batra P, Sharma AK. Anti-cancer potential of flavonoids: recent trends and future perspectives. 3 Biotech 2013; 3:439-459. [PMID: 28324424 PMCID: PMC3824783 DOI: 10.1007/s13205-013-0117-5] [Citation(s) in RCA: 232] [Impact Index Per Article: 21.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Accepted: 01/15/2013] [Indexed: 12/14/2022] Open
Abstract
Cancer is a major public health concern in both developed and developing countries. Several plant-derived anti-cancer agents including taxol, vinblastine, vincristine, the campothecin derivatives, topotecan, irinotecan and etoposide are in clinical use all over the world. Other promising anti-cancer agents include flavopiridol, roscovitine, combretastatin A-4, betulinic acid and silvestrol. From this list one can well imagine the predominance of polyphenols, flavonoids and their synthetic analogs in the treatment of ovarian, breast, cervical, pancreatic and prostate cancer. Flavonoids present in human diet comprise many polyphenolic secondary metabolites with broad-spectrum pharmacological activities including their potential role as anti-cancer agents. A positive correlation between flavonoids-rich diet (from vegetables and fruits) and lower risk of colon, prostate and breast cancers lead to a question that whether flavonoids mediate the protective effects as chemopreventive agents or can interact with different genes and proteins to play role in chemotherapy. The current review emphasizes onto the therapeutic potential of flavonoids and their synthetic analogs as anti-cancer agents by providing new insights into the factors, regulation and molecular mechanisms along with their significant protein interactions.
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Affiliation(s)
- Priya Batra
- Department of Biotechnology, MMEC, Maharishi Markandeshwar University, Mullana, Ambala, Haryana, 133207, India
| | - Anil K Sharma
- Department of Biotechnology, MMEC, Maharishi Markandeshwar University, Mullana, Ambala, Haryana, 133207, India.
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Noori S, Hassan ZM, Yaghmaei B, Dolatkhah M. Antitumor and immunomodulatory effects of salvigenin on tumor bearing mice. Cell Immunol 2013; 286:16-21. [PMID: 24270218 DOI: 10.1016/j.cellimm.2013.10.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Revised: 09/30/2013] [Accepted: 10/15/2013] [Indexed: 11/29/2022]
Abstract
Development of agents that specifically kill cancer cells and simultaneously elicit antitumor immune response is a step forward in cancer therapy. Immunostimulation can result in eliminating of the cancer cells; immunotherapy is a promising approach in balancing the immune response by Treg. In the present study, we investigated whether the administration of salvigenin contributes to the augmentation of antitumor immunity and the regression of tumor tissues in a mouse model of breast cancer. Salvigenin was purified from Tanacetum canescens, and its effect on the tumor volume was investigated. The splenocyte proliferation, shifting of cytokine profile, and the presence of naturally-occurring CD4+CD25+Foxp3+ Treg cells were assessed to describe the anti-tumor immune response. Our results demonstrated that a significant decrease in the level of IL-4 and increase in the IFN-γ in the animals treated with salvigenin and significant decreased in the level of splenic CD4+CD25+Foxp3+ T regulatory cells. The cytotoxic and immunomodulatory properties of salvigenin were acknowledged in vivo.
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Affiliation(s)
- Shokoofe Noori
- Department of Biochemistry, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Zuhair M Hassan
- Department of Immunology, School of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Bahram Yaghmaei
- Department of Biochemistry, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Milad Dolatkhah
- International Branch of Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Mignet N, Seguin J, Chabot GG. Bioavailability of polyphenol liposomes: a challenge ahead. Pharmaceutics 2013; 5:457-71. [PMID: 24300518 PMCID: PMC3836625 DOI: 10.3390/pharmaceutics5030457] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Revised: 08/29/2013] [Accepted: 09/04/2013] [Indexed: 12/03/2022] Open
Abstract
Dietary polyphenols, including flavonoids, have long been recognized as a source of important molecules involved in the prevention of several diseases, including cancer. However, because of their poor bioavailability, polyphenols remain difficult to be employed clinically. Over the past few years, a renewed interest has been devoted to the use of liposomes as carriers aimed at increasing the bioavailability and, hence, the therapeutic benefits of polyphenols. In this paper, we review the causes of the poor bioavailability of polyphenols and concentrate on their liposomal formulations, which offer a means of improving their pharmacokinetics and pharmacodynamics. The problems linked to their development and their potential therapeutic advantages are reviewed. Future directions for liposomal polyphenol development are suggested.
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Affiliation(s)
- Nathalie Mignet
- Authors to whom correspondence should be addressed; E-Mails: (N.M.) (G.G.C.); Tel.: +33-153-739-581 (N.M.); +33-153-739-571 (G.C.G.); Fax: +33-143-266-918 (N.M. & G.C.G.)
| | | | - Guy G. Chabot
- Authors to whom correspondence should be addressed; E-Mails: (N.M.) (G.G.C.); Tel.: +33-153-739-581 (N.M.); +33-153-739-571 (G.C.G.); Fax: +33-143-266-918 (N.M. & G.C.G.)
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Smith AJ, Kavuru P, Arora KK, Kesani S, Tan J, Zaworotko MJ, Shytle RD. Crystal engineering of green tea epigallocatechin-3-gallate (EGCg) cocrystals and pharmacokinetic modulation in rats. Mol Pharm 2013; 10:2948-61. [PMID: 23730870 PMCID: PMC3795472 DOI: 10.1021/mp4000794] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
![]()
The
most abundant polyphenol in green tea, epigallocatechin-3-gallate
(EGCg), has recently received considerable attention due to the discovery
of numerous health-promoting bioactivities. Despite reports of its
poor oral bioavailability, EGCg has been included in many dietary
supplement formulations. Conventional preformulation methods have
been employed to improve the bioavailability of EGCg. However, these
methods have limitations that hinder the development of EGCg as an
effective therapeutic agent. In this study, we have utilized the basic
concepts of crystal engineering and several crystallization techniques
to screen for various solid crystalline forms of EGCg and evaluated
the efficacy of crystal engineering for modulating the pharmacokinetics
of EGCg. We synthesized and characterized seven previously undescribed
crystal forms of EGCg including the pure crystal structure of EGCg.
The aqueous solubility profiles of four new EGCg cocrystals were determined.
These cocrystals were subsequently dosed at 100 mg EGCg per kg body
weight in rats, and the plasma levels were monitored over the course
of eight hours following the single oral dose. Two of the EGCg cocrystals
were found to exhibit modest improvements in relative bioavailability.
Further, cocrystallization resulted in marked effects on pharmacokinetic
parameters including Cmax, Tmax, area under curve, relative bioavailability, and apparent
terminal half-life. Our findings suggest that modulation of the pharmacokinetic
profile of EGCg is possible using cocrystallization and that it offers
certain opportunities that could be useful during its development
as a therapeutic agent.
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Affiliation(s)
- Adam J Smith
- Center of Excellence for Aging and Brain Repair, Department of Neurosurgery and Brain Repair, USF Health College of Medicine, University of South Florida , Tampa, Florida 33612, United States
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Christensen KY, Naidu A, Parent MÉ, Pintos J, Abrahamowicz M, Siemiatycki J, Koushik A. The risk of lung cancer related to dietary intake of flavonoids. Nutr Cancer 2013; 64:964-74. [PMID: 23061904 DOI: 10.1080/01635581.2012.717677] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
It has been hypothesized that flavonoids in foods and beverages may reduce cancer risk through antioxidation, inhibition of inflammation, and other antimutagenic and antiproliferative properties. We examined associations between intake of 5 flavonoid subclasses (anthocyanidins, flavan-3-ols, flavones, flavonols, and flavanones) and lung cancer risk in a population-based case-control study in Montreal, Canada (1061 cases and 1425 controls). Flavonoid intake was estimated from a food frequency questionnaire that assessed diet 2 yr prior to diagnosis (cases) or interview (controls). Odds ratios (ORs) and 95% confidence intervals (CIs) were estimated using unconditional logistic regression. Overall, total flavonoid intake was not associated with lung cancer risk, the effect being similar regardless of sex and smoking level. However, low flavonoid intake from food, but not from beverages, was associated with an increased risk. The adjusted ORs (95% CIs) comparing the highest vs. the lowest quartiles of intake were 0.63 (0.47-0.85) for total flavonoids, 0.82 (0.61-1.11) for anthocyanidins, 0.67 (0.50-0.90) for flavan-3-ols, 0.68 (0.50-0.93) for flavones, 0.62 (0.45-0.84) for flavonols, and 0.70 (0.53-0.94) for flavanones. An inverse association with total flavone and flavanone intake was observed for squamous cell carcinoma but not adenocarcinoma. In conclusion, low flavonoid intake from food may increase lung cancer risk.
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Abstract
Tea is one of the most consumed beverages worldwide, and green tea is the least processed from the buds of the Camellia sinensis plant. The most abundant component of green tea is (-)-epigallocatechin-3-gallate (EGCG), which has been the focus of many cell culture, animal and clinical trials, revealing that EGCG possesses antiproliferative, antimutagenic, antioxidant, antibacterial, antiviral and chemopreventive effects. In this review we briefly summarize the mechanism of action(s) of the green tea component EGCG, highlighting recent advances in the epigenetic regulation by EGCG. Additionally, we provide an overview of mouse chemoprevention studies and EGCG chemoprevention clinical trials.
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Affiliation(s)
- Laura Schramm
- Department of Biological Sciences, St. John's University, NY 11439, USA
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38
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REN JIE, CHENG HONG, XIN WENQUN, CHEN XIN, HU KUN. Induction of apoptosis by 7-piperazinethylchrysin in HCT-116 human colon cancer cells. Oncol Rep 2012; 28:1719-26. [DOI: 10.3892/or.2012.2016] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2012] [Accepted: 08/13/2012] [Indexed: 11/06/2022] Open
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39
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Cabrera A, Mach N. Flavonoides como agentes quimiopreventivos y terapéuticos contra el cáncer de pulmón. REVISTA ESPAÑOLA DE NUTRICIÓN HUMANA Y DIETÉTICA 2012. [DOI: 10.1016/s2173-1292(12)70089-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
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40
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Efecto de los flavonoides en la prevención del cáncer de pulmón: revisión sistemática. Med Clin (Barc) 2012; 139:358-63. [DOI: 10.1016/j.medcli.2012.02.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2011] [Revised: 01/26/2012] [Accepted: 02/02/2012] [Indexed: 11/23/2022]
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41
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Naringin induces death receptor and mitochondria-mediated apoptosis in human cervical cancer (SiHa) cells. Food Chem Toxicol 2012; 51:97-105. [PMID: 22847135 DOI: 10.1016/j.fct.2012.07.033] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2011] [Revised: 06/11/2012] [Accepted: 07/19/2012] [Indexed: 12/16/2022]
Abstract
Cervical cancer is the second most common female cancer worldwide, and it remains a challenge to manage preinvasive and invasive lesions. Fruit-based cancer prevention entities, such as flavonoid and their derivatives, have demonstrated a marked ability to inhibit preclinical models of epithelial cancer cell growth and tumor formation. Here, we extend the role of naringin-mediated chemoprevention to that of cervical carcinogenesis. The present study sought to investigate the therapeutic potential effect of naringin on apoptosis in human cervical SiHa cancer cells. Viability of SiHa cells was evaluated by the MTT assay, apoptosis and mitochondrial transmembrane potential by flow cytometry, and pro-apoptotic related genes by Real-time quantitative PCR. Naringin showed a 50% inhibition of SiHa human cervical cancer cells at a concentration of 750μM. SiHa cells exhibited apoptotic cell death, intranucleosomal DNA fragmentation, morphological changes and decline in the mitochondrial transmembrane potential. In addition, administration of naringin increased the expression of caspases, p53 and Bax, Fas death receptor and its adaptor protein FADD. These results suggest that the induction of apoptosis by naringin is through both death-receptor and mitochondrial pathways. Taken together, our results suggest that naringin might be an effective agent to treat human cervical cancer.
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42
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Lung Cancer. Integr Med (Encinitas) 2012. [DOI: 10.1016/b978-1-4377-1793-8.00060-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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43
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Huang S, Zhao Y, Zhou X, Wu Y, Wu P, Liu T, Yang B, Hu Y, Dong X. Design, synthesis and biological evaluation of 3-benzylideneflavanone derivatives as cytotoxic agents. Med Chem Res 2012. [DOI: 10.1007/s00044-011-9959-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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44
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45
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Smith AJ, Kavuru P, Wojtas L, Zaworotko MJ, Shytle RD. Cocrystals of quercetin with improved solubility and oral bioavailability. Mol Pharm 2011; 8:1867-76. [PMID: 21846121 DOI: 10.1021/mp200209j] [Citation(s) in RCA: 216] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Flavonoids have been studied extensively due to the observation that diets rich in these compounds are associated with lower incidences of many diseases. One of the most studied flavonoids, quercetin, is also the most abundant of these compounds in the plant kingdom. Numerous therapeutic bioactivities have been identified in vitro. However, its in vivo efficacy in pure form is limited by poor bioavailability, primarily due to its low solubility and consequent low absorption in the gut. Cocrystallization has gained attention recently as a means for improving the physicochemical characteristics of a compound. Here, we synthesized and evaluated four new cocrystals of quercetin (QUE): quercetin:caffeine (QUECAF), quercetin:caffeine:methanol (QUECAF·MeOH), quercetin:isonicotinamide (QUEINM), and quercetin:theobromine dihydrate (QUETBR · 2H(2)O). Each of these cocrystals exhibited pharmacokinetic properties that are vastly superior to those of quercetin alone. Cocrystallization was able to overcome the water insolubility of quercetin, with all four cocrystals exhibiting some degree of solubility. The QUECAF and QUECAF·MeOH cocrystals increased the solubility of QUE by 14- and 8-fold when compared to QUE dihydrate. We hypothesized that this improved solubility would translate into enhanced systemic absorption of QUE. This hypothesis was supported in our pharmacokinetic study. The cocrystals outperformed QUE dihydrate with increases in bioavailability up to nearly 10-fold.
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Affiliation(s)
- Adam J Smith
- Center of Excellence for Aging and Brain Repair, Department of Neurosurgery and Brain Repair, USF Health College of Medicine, University of South Florida, Tampa, Florida, USA
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46
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Gorlova OY, Weng SF, Hernandez L, Spitz MR, Forman MR. Dietary patterns affect lung cancer risk in never smokers. Nutr Cancer 2011; 63:842-9. [PMID: 21774612 DOI: 10.1080/01635581.2011.589958] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
A number of studies suggest a role of dietary factors as risk predictors of lung cancer in never smokers. However, it is difficult to interpret the observed associations of lung cancer risk with any particular dietary item due to high correlation among different dietary items. In this study, we derived uncorrelated patterns of dietary items in the never smokers and evaluated the association of these patterns with lung cancer risk, using food frequency data from 299 never-smoker lung cancer patients and 317 controls enrolled in an ongoing case-control lung cancer study. We identified 2 major dietary patterns in never smokers: a "healthy eating" pattern including vegetables, fruits, and low-fat food items, and a "mixed dishes" pattern including most foods with positive loadings. Using multivariable regression analysis, we show that the healthy eating pattern is associated with a significant reduction of lung cancer risk among never smokers. The effect of the healthy eating pattern remained significant after adjustment for age, gender, education, caloric intake, secondhand smoke exposure, and family history of cancer. This finding, if confirmed in a prospective study, has a clear preventive significance, by promoting interventions encouraging healthier diets.
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Affiliation(s)
- Olga Y Gorlova
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA.
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47
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Cao P, Vadhanam MV, Spencer WA, Cai J, Gupta RC. Sustained systemic delivery of green tea polyphenols by polymeric implants significantly diminishes benzo[a]pyrene-induced DNA adducts. Chem Res Toxicol 2011; 24:877-86. [PMID: 21574630 DOI: 10.1021/tx2000625] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The polyphenolics in green tea are believed to be the bioactive components. However, poor bioavailability following ingestion limits their efficacy in vivo. In this study, polyphenon E (poly E), a standardized green tea extract, was administered by sustained-release polycaprolactone implants (two, 2-cm implants; 20% drug load) grafted subcutaneously or via drinking water (0.8% w/v) to female S/D rats. Animals were treated with continuous low dose of benzo[a]pyrene (BP) via subcutaneous polymeric implants (2 cm; 10% load) and euthanized after 1 and 4 weeks. Analysis of lung DNA by (32)P-postlabeling resulted in a statistically significant reduction (50%; p = 0.023) of BP-induced DNA adducts in the implant group; however, only a modest (34%) but statistically insignificant reduction occurred in the drinking water group at 1 week. The implant delivery system also showed significant reduction (35%; p = 0.044) of the known BP diolepoxide-derived DNA adduct after 4 weeks. Notably, the total dose of poly E administered was >100-fold lower in the implant group than the drinking water group (15.7 versus 1,632 mg, respectively). Analysis of selected phase I, phase II, and nucleotide excision repair enzymes at both mRNA and protein levels showed no significant modulation by poly E, suggesting that the reduction in the BP-induced DNA adducts occurred presumably due to known scavenging of the antidiolepoxide of BP by the poly E catechins. In conclusion, our study demonstrated that sustained systemic delivery of poly E significantly reduced BP-induced DNA adducts in spite of its poor bioavailability following oral administration.
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Affiliation(s)
- Pengxiao Cao
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, Kentucky 40202, United States
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48
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Yuan JM, Sun C, Butler LM. Tea and cancer prevention: epidemiological studies. Pharmacol Res 2011; 64:123-35. [PMID: 21419224 DOI: 10.1016/j.phrs.2011.03.002] [Citation(s) in RCA: 121] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2010] [Accepted: 03/02/2011] [Indexed: 12/23/2022]
Abstract
Experimental studies have consistently shown the inhibitory activities of tea extracts on tumorigenesis in multiple model systems. Epidemiological studies, however, have produced inconclusive results in humans. A comprehensive review was conducted to assess the current knowledge on tea consumption and risk of cancers in humans. In general, consumption of black tea was not associated with lower risk of cancer. High intake of green tea was consistently associated with reduced risk of upper gastrointestinal tract cancers after sufficient control for confounders. Limited data support a protective effect of green tea on lung and hepatocellular carcinogenesis. Although observational studies do not support a beneficial role of tea intake on prostate cancer risk, phase II clinical trials have demonstrated an inhibitory effect of green tea extract against the progression of prostate pre-malignant lesions. Green tea may exert beneficial effects against mammary carcinogenesis in premenopausal women and recurrence of breast cancer. There is no sufficient evidence that supports a protective role of tea intake on the development of cancers of the colorectum, pancreas, urinary tract, glioma, lymphoma, and leukemia. Future prospective observational studies with biomarkers of exposure and phase III clinical trials are required to provide definitive evidence for the hypothesized beneficial effect of tea consumption on cancer formation in humans.
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Affiliation(s)
- Jian-Min Yuan
- The Masonic Cancer Center, and Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, 425 East River Road, 554 MCRB, Minneapolis, MN 55455, USA.
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Li X, Wang JN, Huang JM, Xiong XK, Chen MF, Ong CN, Shen HM, Yang XF. Chrysin promotes tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL) induced apoptosis in human cancer cell lines. Toxicol In Vitro 2010; 25:630-5. [PMID: 21195158 DOI: 10.1016/j.tiv.2010.12.013] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2010] [Revised: 12/03/2010] [Accepted: 12/17/2010] [Indexed: 11/17/2022]
Abstract
Chrysin exists widely in plants, honey and propolis. The anti-cancer property of chrysin has been demonstrated though the molecular mechanism is not clear. In this study, we found that pre-treatment with chrysin could promote the cell death induced by TRAIL according to the morphological changes and appearance of sub-G1 peak in four human cancer cell lines. In HCT-116 cells, the results of flow cytometry analysis showed that the percentage of sub-G1 reached (38.89 ± 3.78) % when pre-treatment of chrysin was used at 40 μM, but that was only (2.53 ± 0.10) % in the untreated group and (13.22 ± 0.20) % in TRAIL alone group. The differences between the combination and the untreated or TRAIL alone group were all significant (P<0.05) and dose-dependent effect was obvious. Similar results were obtained in CNE1 cells. In the search of molecular mechanisms, we found that pre-treatment with chrysin could increase TRAIL-induced degradation of caspase 3, caspase 8, PARP proteins. Z-VAD-fmk, which is a pan-caspase inhibitor, could inhibit the apoptosis enhanced by the combination of chrysin and TRAIL. All data indicate that chrysin can enhance the apoptosis induced by TRAIL, and the apoptosis is caspase-dependent and related to the activation of caspase 8.
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Affiliation(s)
- Xin Li
- Center for Disease Control and Prevention of Guangdong Province, 176 Xin Gang West Road, Guangzhou, Guangdong Province 510300, PR China.
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50
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Abdeen SM, Mathew TC, Dashti HM, Asfar S. Protective effects of green tea on intestinal ischemia-reperfusion injury. Nutrition 2010; 27:598-603. [PMID: 21167681 DOI: 10.1016/j.nut.2010.05.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2009] [Revised: 03/04/2010] [Accepted: 05/25/2010] [Indexed: 10/18/2022]
Abstract
OBJECTIVE The intestinal mucosa is known to be adversely affected by ischemia-reperfusion (I/R). Previously we showed that green tea protects the intestinal mucosa from fasting-induced damage. The aim of this study is to determine whether green tea has any protective role in I/R of the intestine. METHODS Three groups of male rats were used in this study. Group I (I/R) underwent I/R of the intestine (30 min of ischemia followed by 1 h of reperfusion). Group II (green tea + I/R) was given green tea for 2 wk before inducing I/R. Group III (control) had sham I/R. After the experiments, the jejunum was removed and the tissues were processed for histopathologic examination and immunohistochemical analysis for cell proliferation markers and antioxidant enzymes. RESULTS The intestinal mucosa in group II was preserved compared with that in group I. The expressions of cellular proliferation markers (proliferating cell nuclear antigen and Ki-67) and cellular antioxidants (superoxide dismutase and catalase) in group II were similar to those in group III and much less than in group I, reflecting the protective effects of green tea in group II animals. CONCLUSION In this animal model, administration of green tea before inducing I/R protects the intestinal mucosa from injury.
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Affiliation(s)
- S M Abdeen
- Department of Pathology, Faculty of Medicine, Kuwait University, Safat, Kuwait
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