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Prasanth MI, Sivamaruthi BS, Cheong CSY, Verma K, Tencomnao T, Brimson JM, Prasansuklab A. Role of Epigenetic Modulation in Neurodegenerative Diseases: Implications of Phytochemical Interventions. Antioxidants (Basel) 2024; 13:606. [PMID: 38790711 PMCID: PMC11118909 DOI: 10.3390/antiox13050606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2024] [Revised: 05/10/2024] [Accepted: 05/13/2024] [Indexed: 05/26/2024] Open
Abstract
Epigenetics defines changes in cell function without involving alterations in DNA sequence. Neuroepigenetics bridges neuroscience and epigenetics by regulating gene expression in the nervous system and its impact on brain function. With the increase in research in recent years, it was observed that alterations in the gene expression did not always originate from changes in the genetic sequence, which has led to understanding the role of epigenetics in neurodegenerative diseases (NDDs) including Alzheimer's disease (AD) and Parkinson's disease (PD). Epigenetic alterations contribute to the aberrant expression of genes involved in neuroinflammation, protein aggregation, and neuronal death. Natural phytochemicals have shown promise as potential therapeutic agents against NDDs because of their antioxidant, anti-inflammatory, and neuroprotective effects in cellular and animal models. For instance, resveratrol (grapes), curcumin (turmeric), and epigallocatechin gallate (EGCG; green tea) exhibit neuroprotective effects through their influence on DNA methylation patterns, histone acetylation, and non-coding RNA expression profiles. Phytochemicals also aid in slowing disease progression, preserving neuronal function, and enhancing cognitive and motor abilities. The present review focuses on various epigenetic modifications involved in the pathology of NDDs, including AD and PD, gene expression regulation related to epigenetic alterations, and the role of specific polyphenols in influencing epigenetic modifications in AD and PD.
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Affiliation(s)
- Mani Iyer Prasanth
- Natural Products for Neuroprotection and Anti-Ageing Research Unit, Chulalongkorn University, Bangkok 10330, Thailand; (M.I.P.); (C.S.Y.C.); (K.V.); (T.T.); (J.M.B.)
- Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| | - Bhagavathi Sundaram Sivamaruthi
- Office of Research Administration, Chiang Mai University, Chiang Mai 50200, Thailand;
- Innovation Center for Holistic Health, Nutraceuticals, and Cosmeceuticals, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Clerance Su Yee Cheong
- Natural Products for Neuroprotection and Anti-Ageing Research Unit, Chulalongkorn University, Bangkok 10330, Thailand; (M.I.P.); (C.S.Y.C.); (K.V.); (T.T.); (J.M.B.)
- Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| | - Kanika Verma
- Natural Products for Neuroprotection and Anti-Ageing Research Unit, Chulalongkorn University, Bangkok 10330, Thailand; (M.I.P.); (C.S.Y.C.); (K.V.); (T.T.); (J.M.B.)
- Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| | - Tewin Tencomnao
- Natural Products for Neuroprotection and Anti-Ageing Research Unit, Chulalongkorn University, Bangkok 10330, Thailand; (M.I.P.); (C.S.Y.C.); (K.V.); (T.T.); (J.M.B.)
- Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| | - James Michael Brimson
- Natural Products for Neuroprotection and Anti-Ageing Research Unit, Chulalongkorn University, Bangkok 10330, Thailand; (M.I.P.); (C.S.Y.C.); (K.V.); (T.T.); (J.M.B.)
- Research, Innovation and International Affairs, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| | - Anchalee Prasansuklab
- Natural Products for Neuroprotection and Anti-Ageing Research Unit, Chulalongkorn University, Bangkok 10330, Thailand; (M.I.P.); (C.S.Y.C.); (K.V.); (T.T.); (J.M.B.)
- College of Public Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
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Chen Y, Liu Z, Gong Y. Neuron-immunity communication: mechanism of neuroprotective effects in EGCG. Crit Rev Food Sci Nutr 2023:1-20. [PMID: 37216484 DOI: 10.1080/10408398.2023.2212069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Epigallocatechin gallate (EGCG), a naturally occurring active ingredient unique to tea, has been shown to have neuroprotective potential. There is growing evidence of its potential advantages in the prevention and treatment of neuroinflammation, neurodegenerative diseases, and neurological damage. Neuroimmune communication is an important physiological mechanism in neurological diseases, including immune cell activation and response, cytokine delivery. EGCG shows great neuroprotective potential by modulating signals related to autoimmune response and improving communication between the nervous system and the immune system, effectively reducing the inflammatory state and neurological function. During neuroimmune communication, EGCG promotes the secretion of neurotrophic factors into the repair of damaged neurons, improves intestinal microenvironmental homeostasis, and ameliorates pathological phenotypes through molecular and cellular mechanisms related to the brain-gut axis. Here, we discuss the molecular and cellular mechanisms of inflammatory signaling exchange involving neuroimmune communication. We further emphasize that the neuroprotective role of EGCG is dependent on the modulatory role between immunity and neurology in neurologically related diseases.
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Affiliation(s)
- Ying Chen
- Key Laboratory of Tea Science of Ministry of Educatioxn, Changsha, China
- National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients, Changsha, China
| | - Zhonghua Liu
- Key Laboratory of Tea Science of Ministry of Educatioxn, Changsha, China
- National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients, Changsha, China
- Co-Innovation Center of Education Ministry for Utilization of Botanical Functional Ingredients, Changsha, China
- Key Laboratory for Evaluation and Utilization of Gene Resources of Horticultural Crops, Ministry of Agriculture and Rural Affairs of China, Hunan Agricultural University, Changsha, China
| | - Yushun Gong
- Key Laboratory of Tea Science of Ministry of Educatioxn, Changsha, China
- National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients, Changsha, China
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Santos RA, Andrade EDS, Monteiro M, Fialho E, Silva JL, Daleprane JB, Ferraz da Costa DC. Green Tea ( Camellia sinensis) Extract Induces p53-Mediated Cytotoxicity and Inhibits Migration of Breast Cancer Cells. Foods 2021; 10:foods10123154. [PMID: 34945706 PMCID: PMC8701076 DOI: 10.3390/foods10123154] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/12/2021] [Accepted: 12/14/2021] [Indexed: 12/23/2022] Open
Abstract
Green tea (GT) has been shown to play an important role in cancer chemoprevention. However, the related molecular mechanisms need to be further explored, especially regarding the use of GT extract (GTE) from the food matrix. For this study, epigallocatechin gallate (EGCG) and epigallocatechin (EGC) were identified in GTE, representing 42 and 40% of the total polyphenols, respectively. MDA-MB-231 (p53-p.R280K mutant) and MCF-7 (wild-type p53) breast tumor cells and MCF-10A non-tumoral cells were exposed to GTE for 24–48 h and cell viability was assessed in the presence of p53 inhibitor pifithrin-α. GTE selectively targeted breast tumor cells without cytotoxic effect on non-tumoral cells and p53 inhibition led to an increase in viable cells, especially in MCF-7, suggesting the involvement of p53 in GTE-induced cytotoxicity. GTE was also effective in reducing MCF-7 and MDA-MD-231 cell migration by 30 and 50%, respectively. An increment in p53 and p21 expression stimulated by GTE was observed in MCF-7, and the opposite phenomenon was found in MDA-MB-231 cells, with a redistribution of mutant-p53 from the nucleus and no differences in p21 levels. All these findings provide insights into the action of GTE and support its anticarcinogenic potential on breast tumor cells.
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Affiliation(s)
- Ronimara A. Santos
- Laboratory for Studies of Interactions between Nutrition and Genetics, Department of Basic and Experimental Nutrition, Rio de Janeiro State University, Rio de Janeiro 20550-013, Brazil; (R.A.S.); (E.D.S.A.); (J.B.D.)
| | - Emmanuele D. S. Andrade
- Laboratory for Studies of Interactions between Nutrition and Genetics, Department of Basic and Experimental Nutrition, Rio de Janeiro State University, Rio de Janeiro 20550-013, Brazil; (R.A.S.); (E.D.S.A.); (J.B.D.)
| | - Mariana Monteiro
- Laboratory of Functional Foods, Institute of Nutrition Josué de Castro, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (M.M.); (E.F.)
| | - Eliane Fialho
- Laboratory of Functional Foods, Institute of Nutrition Josué de Castro, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (M.M.); (E.F.)
| | - Jerson L. Silva
- National Institute of Science and Technology for Structural Biology and Bioimaging, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, Brazil;
| | - Julio B. Daleprane
- Laboratory for Studies of Interactions between Nutrition and Genetics, Department of Basic and Experimental Nutrition, Rio de Janeiro State University, Rio de Janeiro 20550-013, Brazil; (R.A.S.); (E.D.S.A.); (J.B.D.)
| | - Danielly C. Ferraz da Costa
- Laboratory for Studies of Interactions between Nutrition and Genetics, Department of Basic and Experimental Nutrition, Rio de Janeiro State University, Rio de Janeiro 20550-013, Brazil; (R.A.S.); (E.D.S.A.); (J.B.D.)
- Correspondence:
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Yin Z, Li J, Kang L, Liu X, Luo J, Zhang L, Li Y, Cai J. Epigallocatechin-3-gallate induces autophagy-related apoptosis associated with LC3B II and Beclin expression of bladder cancer cells. J Food Biochem 2021; 45:e13758. [PMID: 33997996 DOI: 10.1111/jfbc.13758] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 03/31/2021] [Accepted: 04/14/2021] [Indexed: 01/02/2023]
Abstract
The incidence of bladder cancer in traditional green tea-consuming countries was dramatically lower than low green tea-consuming countries. Epigallocatechin-3-gallate (EGCG), an active ingredient extracted from green tea, showed effective inhibition of formation and progression of many tumors. However, whether autophagy involved in this tumor-suppression mechanism of EGCG on bladder cancer was still unclear. In this study, we demonstrated low concentration of EGCG-induced proliferation inhibition and increased apoptosis in bladder cancer cell lines (5,637 and T24 cells) indicated by the increased expression of apoptosis-related protein (caspase9, caspase3 and BAX). In addition, low dose of EGCG also regulated autophagy pathway associated protein (LC3B II and Beclin) expression and this autophagy pathway was blocked by PI3K/AKT inhibitor; moreover, knockdown of ATG5 reversed EGCG-induced apoptosis in 5,637 cells, indicating that EGCG might inhibit the bladder cancer through autophagy pathway. Our findings indicated that EGCG should be considered as a novel therapy for bladder cancer treatment by regulating autophagy pathway. PRACTICAL APPLICATIONS: Our research proved EGCG from green tea could be used as an effective anti-tumor ingredient by revealing another mechanism that epigallocatechin-3-Gallate inhibited bladder cancer cells via inducing autophagy-related apoptosis. And green tea could be considered as a kind of tumor-preventing beverage.
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Affiliation(s)
- Zhaofa Yin
- Department of Urology, Loudi Central Hospital of Hunan Province, Loudi, P.R. China
| | - Juan Li
- Department of Digestive, 2nd Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Le Kang
- Department of Urology, Loudi Central Hospital of Hunan Province, Loudi, P.R. China
| | - Xiangyang Liu
- Department of Ultrasound, Loudi Central Hospital of Hunan Province, Loudi, China
| | - Jianguo Luo
- Department of Urology, Loudi Central Hospital of Hunan Province, Loudi, P.R. China
| | - Ling Zhang
- Department of Urology, Loudi Central Hospital of Hunan Province, Loudi, P.R. China
| | - Yuting Li
- Department of Urology, Loudi Central Hospital of Hunan Province, Loudi, P.R. China
| | - Jiarong Cai
- Department of Urology, Loudi Central Hospital of Hunan Province, Loudi, P.R. China
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Flavonoids as natural phenolic compounds and their role in therapeutics: an overview. FUTURE JOURNAL OF PHARMACEUTICAL SCIENCES 2021; 7:25. [PMID: 33495733 PMCID: PMC7816146 DOI: 10.1186/s43094-020-00161-8] [Citation(s) in RCA: 110] [Impact Index Per Article: 36.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 12/21/2020] [Indexed: 12/26/2022] Open
Abstract
Background Natural plants and plant-derived formulations have been used by mankind from the ancient period of time. For the past few years, many investigations elaborated the therapeutic potential of various secondary chemicals present in the plants. Literature revealed that the various secondary metabolites, viz. phenolics and flavonoids, are responsible for a variety of therapeutic action in humans. Main body In the present review, an attempt has been made to compile the exploration of natural phenolic compounds with major emphasis on flavonoids and their therapeutic potential too. Interestingly, long-term intake of many dietary foods (rich in phenolics) proved to be protective against the development and management of diabetes, cancer, osteoporosis, cardiovascular diseases and neurodegenerative diseases, etc. Conclusion This review presents an overview of flavonoid compounds to use them as a potential therapeutic alternative in various diseases and disorders. In addition, the present understanding of phenolics and flavonoids will serve as the basis for the next scientific studies.
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Aggarwal V, Tuli HS, Tania M, Srivastava S, Ritzer EE, Pandey A, Aggarwal D, Barwal TS, Jain A, Kaur G, Sak K, Varol M, Bishayee A. Molecular mechanisms of action of epigallocatechin gallate in cancer: Recent trends and advancement. Semin Cancer Biol 2020; 80:256-275. [PMID: 32461153 DOI: 10.1016/j.semcancer.2020.05.011] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 05/08/2020] [Accepted: 05/17/2020] [Indexed: 12/22/2022]
Abstract
Epigallocatechin gallate (EGCG), also known as epigallocatechin-3-gallate, is an ester of epigallocatechin and gallic acid. EGCG, abundantly found in tea, is a polyphenolic flavonoid that has the potential to affect human health and disease. EGCG interacts with various recognized cellular targets and inhibits cancer cell proliferation by inducing apoptosis and cell cycle arrest. In addition, scientific evidence has illustrated the promising role of EGCG in inhibiting tumor cell metastasis and angiogenesis. It has also been found that EGCG may reverse drug resistance of cancer cells and could be a promising candidate for synergism studies. The prospective importance of EGCG in cancer treatment is owed to its natural origin, safety, and low cost which presents it as an attractive target for further development of novel cancer therapeutics. A major challenge with EGCG is its low bioavailability which is being targeted for improvement by encapsulating EGCG in nano-sized vehicles for further delivery. However, there are major limitations of the studies on EGCG, including study design, experimental bias, and inconsistent results and reproducibility among different study cohorts. Additionally, it is important to identify specific EGCG pharmacological targets in the tumor-specific signaling pathways for development of novel combined therapeutic treatments with EGCG. The present review highlights the ongoing development to identify cellular and molecular targets of EGCG in cancer. Furthermore, the role of nanotechnology-mediated EGCG combinations and delivery systems will also be discussed.
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Affiliation(s)
- Vaishali Aggarwal
- Department of Histopathology, Post Graduate Institute of Medical Education and Research, Chandigarh 160 012, Punjab, India
| | - Hardeep Singh Tuli
- Department of Biotechnology, Maharishi Markandeshwar (Deemed to be University), Mullana-Ambala 133 207, Haryana, India.
| | - Mousumi Tania
- Division of Molecular Cancer, Red Green Research Center, Dhaka 1205, Bangladesh
| | - Saumya Srivastava
- Department of Biotechnology, Motilal Nehru National Institute of Technology Allahabad, Prayagraj 211 004, Uttar Pradesh, India
| | - Erin E Ritzer
- Lake Erie College of Osteopathic Medicine, Bradenton 34211, FL, USA
| | - Anjana Pandey
- Department of Biotechnology, Motilal Nehru National Institute of Technology Allahabad, Prayagraj 211 004, Uttar Pradesh, India
| | - Diwakar Aggarwal
- Department of Biotechnology, Maharishi Markandeshwar (Deemed to be University), Mullana-Ambala 133 207, Haryana, India
| | - Tushar Singh Barwal
- Department of Zoology, Central University of Punjab, Bathinda 151 001, Punjab, India
| | - Aklank Jain
- Department of Zoology, Central University of Punjab, Bathinda 151 001, Punjab, India
| | - Ginpreet Kaur
- Department of Pharmacology, Shobhaben Pratapbhai Patel School of Pharmacy and Technology Management, Mumbai 400 056, Maharastra, India
| | | | - Mehmet Varol
- Department of Molecular Biology and Genetics, Faculty of Science, Mugla Sitki Kocman University, Muğla TR48000, Turkey
| | - Anupam Bishayee
- Lake Erie College of Osteopathic Medicine, Bradenton 34211, FL, USA.
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Pant K, Peixoto E, Richard S, Gradilone SA. Role of Histone Deacetylases in Carcinogenesis: Potential Role in Cholangiocarcinoma. Cells 2020; 9:cells9030780. [PMID: 32210140 PMCID: PMC7140894 DOI: 10.3390/cells9030780] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 03/05/2020] [Accepted: 03/17/2020] [Indexed: 12/19/2022] Open
Abstract
Cholangiocarcinoma (CCA) is a highly invasive and metastatic form of carcinoma with bleak prognosis due to limited therapies, frequent relapse, and chemotherapy resistance. There is an urgent need to identify the molecular regulators of CCA in order to develop novel therapeutics and advance diseases diagnosis. Many cellular proteins including histones may undergo a series of enzyme-mediated post-translational modifications including acetylation, methylation, phosphorylation, sumoylation, and crotonylation. Histone deacetylases (HDACs) play an important role in regulating epigenetic maintenance and modifications of their targets, which in turn exert critical impacts on chromatin structure, gene expression, and stability of proteins. As such, HDACs constitute a group of potential therapeutic targets for CCA. The aim of this review was to summarize the role that HDACs perform in regulating epigenetic changes, tumor development, and their potential as therapeutic targets for CCA.
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Affiliation(s)
- Kishor Pant
- The Hormel Institute, University of Minnesota, Austin, MN 55912, USA; (K.P.); (E.P.); (S.R.)
| | - Estanislao Peixoto
- The Hormel Institute, University of Minnesota, Austin, MN 55912, USA; (K.P.); (E.P.); (S.R.)
| | - Seth Richard
- The Hormel Institute, University of Minnesota, Austin, MN 55912, USA; (K.P.); (E.P.); (S.R.)
| | - Sergio A. Gradilone
- The Hormel Institute, University of Minnesota, Austin, MN 55912, USA; (K.P.); (E.P.); (S.R.)
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, USA
- Correspondence:
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Luo H, Vong CT, Chen H, Gao Y, Lyu P, Qiu L, Zhao M, Liu Q, Cheng Z, Zou J, Yao P, Gao C, Wei J, Ung COL, Wang S, Zhong Z, Wang Y. Naturally occurring anti-cancer compounds: shining from Chinese herbal medicine. Chin Med 2019; 14:48. [PMID: 31719837 PMCID: PMC6836491 DOI: 10.1186/s13020-019-0270-9] [Citation(s) in RCA: 261] [Impact Index Per Article: 52.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Accepted: 10/23/2019] [Indexed: 12/24/2022] Open
Abstract
Numerous natural products originated from Chinese herbal medicine exhibit anti-cancer activities, including anti-proliferative, pro-apoptotic, anti-metastatic, anti-angiogenic effects, as well as regulate autophagy, reverse multidrug resistance, balance immunity, and enhance chemotherapy in vitro and in vivo. To provide new insights into the critical path ahead, we systemically reviewed the most recent advances (reported since 2011) on the key compounds with anti-cancer effects derived from Chinese herbal medicine (curcumin, epigallocatechin gallate, berberine, artemisinin, ginsenoside Rg3, ursolic acid, silibinin, emodin, triptolide, cucurbitacin B, tanshinone I, oridonin, shikonin, gambogic acid, artesunate, wogonin, β-elemene, and cepharanthine) in scientific databases (PubMed, Web of Science, Medline, Scopus, and Clinical Trials). With a broader perspective, we focused on their recently discovered and/or investigated pharmacological effects, novel mechanism of action, relevant clinical studies, and their innovative applications in combined therapy and immunomodulation. In addition, the present review has extended to describe other promising compounds including dihydroartemisinin, ginsenoside Rh2, compound K, cucurbitacins D, E, I, tanshinone IIA and cryptotanshinone in view of their potentials in cancer therapy. Up to now, the evidence about the immunomodulatory effects and clinical trials of natural anti-cancer compounds from Chinese herbal medicine is very limited, and further research is needed to monitor their immunoregulatory effects and explore their mechanisms of action as modulators of immune checkpoints.
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Affiliation(s)
- Hua Luo
- Institute of Chinese Medical Sciences, State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Macao, China
| | - Chi Teng Vong
- Institute of Chinese Medical Sciences, State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Macao, China
| | - Hanbin Chen
- Institute of Chinese Medical Sciences, State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Macao, China
| | - Yan Gao
- Institute of Chinese Medical Sciences, State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Macao, China
| | - Peng Lyu
- Institute of Chinese Medical Sciences, State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Macao, China
| | - Ling Qiu
- Institute of Chinese Medical Sciences, State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Macao, China
| | - Mingming Zhao
- Institute of Chinese Medical Sciences, State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Macao, China
| | - Qiao Liu
- Institute of Chinese Medical Sciences, State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Macao, China
| | - Zehua Cheng
- Institute of Chinese Medical Sciences, State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Macao, China
| | - Jian Zou
- Institute of Chinese Medical Sciences, State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Macao, China
| | - Peifen Yao
- Institute of Chinese Medical Sciences, State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Macao, China
| | - Caifang Gao
- Institute of Chinese Medical Sciences, State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Macao, China
| | - Jinchao Wei
- Institute of Chinese Medical Sciences, State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Macao, China
| | - Carolina Oi Lam Ung
- Institute of Chinese Medical Sciences, State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Macao, China
| | - Shengpeng Wang
- Institute of Chinese Medical Sciences, State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Macao, China
| | - Zhangfeng Zhong
- Institute of Chinese Medical Sciences, State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Macao, China
| | - Yitao Wang
- Institute of Chinese Medical Sciences, State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Macao, China
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ROS-Mediated Cancer Cell Killing through Dietary Phytochemicals. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:9051542. [PMID: 31217841 PMCID: PMC6536988 DOI: 10.1155/2019/9051542] [Citation(s) in RCA: 105] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 04/18/2019] [Indexed: 02/07/2023]
Abstract
Reactive oxygen species (ROS) promote carcinogenesis by inducing genetic mutations, activating oncogenes, and raising oxidative stress, which all influence cell proliferation, survival, and apoptosis. Cancer cells display redox imbalance due to increased ROS level compared to normal cells. This unique feature in cancer cells may, therefore, be exploited for targeted therapy. Over the past few decades, natural compounds have attracted attention as potential cancer therapies because of their ability to maintain cellular redox homeostasis with minimal toxicity. Preclinical studies show that bioactive dietary polyphenols exert antitumor effects by inducing ROS-mediated cytotoxicity in cancer cells. These bioactive compounds also regulate cell proliferation, survival, and apoptotic and antiapoptotic signalling pathways. In this review, we discuss (i) how ROS is generated and (ii) regulated and (iii) the cell signalling pathways affected by ROS. We also discuss (iv) the various dietary phytochemicals that have been implicated to have cancer therapeutic effects through their ROS-related functions.
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Clinicopathological features and prediction values of HDAC1, HDAC2, HDAC3, and HDAC11 in classical Hodgkin lymphoma. Anticancer Drugs 2019; 29:364-370. [PMID: 29481474 PMCID: PMC5882292 DOI: 10.1097/cad.0000000000000610] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Histone deacetylases (HDACs) are involved in multiple physical and pathological processes in classical Hodgkin lymphoma (cHL). The prognostic value of HDACs in cHL patients has not been discussed. The aim of the current study is to investigate the HDAC1, HDAC2, HDAC3, and HDAC11 expressions, and to evaluate the correlation of HDAC1, HDAC2, HDAC3, and HDAC11 expressions with the survival rate in cHL patients. We retrospectively analyzed clinicopathological data of 28 patients who were diagnosed with cHL between August 2002 and March 2010. Immunohistochemistry was used to detect the expression of HDAC1, HDAC2, HDAC3, and HDAC11 in these patients. The results showed that HDAC1, HDAC3, and HDAC11 were expressed at a higher level in Hodgkin Reed-Sternberg cells, whereas HDAC2 was expressed at a lower level in Hodgkin Reed-Sternberg cells. The expression of HDAC2 had a relationship with pathological type (P=0.012). There was also a correlation between the expression of HDAC11 and the erythrocyte sedimentation rate (P=0.054). Other clinicopathological parameters had no significant correlation with the expression of HDAC1, HDAC2, HDAC3, and HDAC11 in terms of survival (P>0.05). The 10-year total survival rate by Cox multivariate analysis, after taking into account all clinical and pathologic factors, showed that bulky disease retained significance (P=0.028). Higher expression of HDAC1 predicted shorter progression-free survival and overall survival (OS) in cHL patients (P<0.05, in both cases), and higher expression of HDAC11 might be correlated with lower OS (P=0.05). The study showed that the expressions of HDAC2 and HDAC11 have a particular relationship with the pathologic subtype. Increased expression of HDAC1 was correlated negatively with progression-free survival and OS, and increased expression of HDAC11 had a borderline relationship with the OS rate in patients with cHL.
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Rady I, Mohamed H, Rady M, Siddiqui IA, Mukhtar H. Cancer preventive and therapeutic effects of EGCG, the major polyphenol in green tea. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.ejbas.2017.12.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Islam Rady
- School of Medicine and Public Health, Department of Dermatology, University of Wisconsin-Madison, WI 53706, USA
- Department of Zoology, Faculty of Science, Al-Azhar University, Cairo, Egypt
| | - Hadir Mohamed
- School of Medicine and Public Health, Department of Dermatology, University of Wisconsin-Madison, WI 53706, USA
| | - Mohamad Rady
- Department of Zoology, Faculty of Science, Al-Azhar University, Cairo, Egypt
| | - Imtiaz A. Siddiqui
- School of Medicine and Public Health, Department of Dermatology, University of Wisconsin-Madison, WI 53706, USA
| | - Hasan Mukhtar
- School of Medicine and Public Health, Department of Dermatology, University of Wisconsin-Madison, WI 53706, USA
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Wu D, Liu Z, Li J, Zhang Q, Zhong P, Teng T, Chen M, Xie Z, Ji A, Li Y. Epigallocatechin-3-gallate inhibits the growth and increases the apoptosis of human thyroid carcinoma cells through suppression of EGFR/RAS/RAF/MEK/ERK signaling pathway. Cancer Cell Int 2019; 19:43. [PMID: 30858760 PMCID: PMC6394055 DOI: 10.1186/s12935-019-0762-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Accepted: 02/18/2019] [Indexed: 12/12/2022] Open
Abstract
Background Thyroid cancer is the most common type of endocrine malignancy and the incidence rate is rapidly increasing worldwide. Epigallocatechin-3-gallate (EGCG) could suppress cancer growth and induce apoptosis in many types of cancer cells. However, the mechanism of action of EGCG on the growth of human thyroid carcinoma cells has not been fully illuminated. Methods Cell proliferation and viability were detected by EdU and MTS assays. Cell cycle distribution was measured by flow cytometry. Migration and invasion were evaluated by scratch and transwell assays. Apoptotic levels were detected by TUNEL staining and western blotting. The protein levels of EGFR/RAS/RAF/MEK/ERK signaling pathway were detected by western blotting. The in vivo results were determined by tumor xenografts in nude mice. The in vivo proliferation, tumor microvessel density, and apoptosis were detected by immunohistochemistry. Results EGCG inhibited the proliferation, viability, and cell cycle progression in human thyroid carcinoma cells. EGCG decreased the migration and invasion, but increased the apoptosis of human thyroid carcinoma cells. EGCG reduced the protein levels of phospho (p)-epidermal growth factor receptor (EGFR), H-RAS, p-RAF, p-MEK1/2, and p-extracellular signal-regulated protein kinase 1/2 (ERK1/2) in human thyroid carcinoma cells. EGCG inhibited the growth of human thyroid carcinoma xenografts by inducing apoptosis and down-regulating angiogenesis. Conclusions EGCG could reduce the growth and increase the apoptosis of human thyroid carcinoma cells through suppressing the EGFR/RAS/RAF/MEK/ERK signaling pathway. EGCG can be developed as an effective therapeutic agent for the treatment of thyroid cancer.
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Affiliation(s)
- Dongdong Wu
- 1School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004 Henan China.,3Henan International Joint Laboratory for Nuclear Protein Regulation, Henan University, Kaifeng, 475004 Henan China
| | - Zhengguo Liu
- 1School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004 Henan China.,3Henan International Joint Laboratory for Nuclear Protein Regulation, Henan University, Kaifeng, 475004 Henan China
| | - Jianmei Li
- 1School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004 Henan China.,3Henan International Joint Laboratory for Nuclear Protein Regulation, Henan University, Kaifeng, 475004 Henan China
| | - Qianqian Zhang
- 1School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004 Henan China.,3Henan International Joint Laboratory for Nuclear Protein Regulation, Henan University, Kaifeng, 475004 Henan China
| | - Peiyu Zhong
- 1School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004 Henan China.,3Henan International Joint Laboratory for Nuclear Protein Regulation, Henan University, Kaifeng, 475004 Henan China
| | - Tieshan Teng
- 1School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004 Henan China.,3Henan International Joint Laboratory for Nuclear Protein Regulation, Henan University, Kaifeng, 475004 Henan China
| | - Mingliang Chen
- 1School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004 Henan China.,3Henan International Joint Laboratory for Nuclear Protein Regulation, Henan University, Kaifeng, 475004 Henan China
| | - Zhongwen Xie
- 2State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang West Road, Hefei, 230036 Anhui China
| | - Ailing Ji
- 1School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004 Henan China.,3Henan International Joint Laboratory for Nuclear Protein Regulation, Henan University, Kaifeng, 475004 Henan China
| | - Yanzhang Li
- 1School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004 Henan China.,3Henan International Joint Laboratory for Nuclear Protein Regulation, Henan University, Kaifeng, 475004 Henan China
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Jian W, Fang S, Chen T, Fang J, Mo Y, Li D, Xiong S, Liu W, Song L, Shen J, Xia Y, Wang Q, Hong H. A novel role of HuR in -Epigallocatechin-3-gallate (EGCG) induces tumour cells apoptosis. J Cell Mol Med 2019; 23:3767-3771. [PMID: 30793483 PMCID: PMC6484420 DOI: 10.1111/jcmm.14249] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 01/31/2019] [Accepted: 02/01/2019] [Indexed: 01/30/2023] Open
Affiliation(s)
- Wenxuan Jian
- DME Center, Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Shuhuan Fang
- DME Center, Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Tongkai Chen
- DME Center, Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Jiansong Fang
- DME Center, Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Yousheng Mo
- DME Center, Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Dongli Li
- DME Center, Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Sha Xiong
- DME Center, Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Wei Liu
- DME Center, Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Lei Song
- DME Center, Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Jiangang Shen
- DME Center, Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong Province, China.,School of Chinese Medicine, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Yong Xia
- Department of Clinical Laboratory, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong Province, China
| | - Qi Wang
- DME Center, Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Honghai Hong
- Department of Clinical Laboratory, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong Province, China.,Department of Pathology and Laboratory Medicine, Indiana University School of Medicine, Indianapolis, Indiana
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Molecular Targets of Epigallocatechin-Gallate (EGCG): A Special Focus on Signal Transduction and Cancer. Nutrients 2018; 10:nu10121936. [PMID: 30563268 PMCID: PMC6315581 DOI: 10.3390/nu10121936] [Citation(s) in RCA: 159] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 11/30/2018] [Accepted: 12/04/2018] [Indexed: 12/15/2022] Open
Abstract
Green tea is a beverage that is widely consumed worldwide and is believed to exert effects on different diseases, including cancer. The major components of green tea are catechins, a family of polyphenols. Among them, epigallocatechin-gallate (EGCG) is the most abundant and biologically active. EGCG is widely studied for its anti-cancer properties. However, the cellular and molecular mechanisms explaining its action have not been completely understood, yet. EGCG is effective in vivo at micromolar concentrations, suggesting that its action is mediated by interaction with specific targets that are involved in the regulation of crucial steps of cell proliferation, survival, and metastatic spread. Recently, several proteins have been identified as EGCG direct interactors. Among them, the trans-membrane receptor 67LR has been identified as a high affinity EGCG receptor. 67LR is a master regulator of many pathways affecting cell proliferation or apoptosis, also regulating cancer stem cells (CSCs) activity. EGCG was also found to be interacting directly with Pin1, TGFR-II, and metalloproteinases (MMPs) (mainly MMP2 and MMP9), which respectively regulate EGCG-dependent inhibition of NF-kB, epithelial-mesenchimal transaction (EMT) and cellular invasion. EGCG interacts with DNA methyltransferases (DNMTs) and histone deacetylases (HDACs), which modulates epigenetic changes. The bulk of this novel knowledge provides information about the mechanisms of action of EGCG and may explain its onco-suppressive function. The identification of crucial signalling pathways that are related to cancer onset and progression whose master regulators interacts with EGCG may disclose intriguing pharmacological targets, and eventually lead to novel combined treatments in which EGCG acts synergistically with known drugs.
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15
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Khan MI, Rath S, Adhami VM, Mukhtar H. Targeting epigenome with dietary nutrients in cancer: Current advances and future challenges. Pharmacol Res 2018; 129:375-387. [DOI: 10.1016/j.phrs.2017.12.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 11/22/2017] [Accepted: 12/05/2017] [Indexed: 02/06/2023]
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16
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3,6-Dihydroxyflavone regulates microRNA-34a through DNA methylation. BMC Cancer 2017; 17:619. [PMID: 28870206 PMCID: PMC5584326 DOI: 10.1186/s12885-017-3638-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Accepted: 08/29/2017] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Breast cancer is the common cancer in China. In previous study, we determined that 3,6-dihydroxyflavone (3,6-DHF) increases miR-34a significantly in breast carcinogenesis, but the mechanism remains unclear. METHODS We used qRT-PCR to analyze miR-34a and ten-eleven translocation (TET)1, TET2, TET3 levels in breast cancer cells. With a cellular breast carcinogenesis model and an experimental model of carcinogenesis in rats, TET1 levels were evaluated by western blot analysis and immunofluorescence. TET1 and 5hmC (5-hydroxymethylcytosine) levels were evaluated by immunofluorescence in nude mouse xenografts of MDA-MB-231 cells. Chromatin immunoprecipitation(ChIP) assayed for TET1 on the TET1 promoter, and dot blot analysis of DNA 5hmC was performed in MDA-MB-231 cells. We evaluated the mechanism of 3,6-DHF on the expression of tumor suppressor miR-34a by transfecting them with DNA methyltransferase (DNMT)1 plasmid and TET1 siRNA in breast cancer cells. Methylation-specific PCR detected methylation of the miR-34a promoter. RESULTS First, we found that 3,6-DHF promotes the expression of TET1 during carcinogen-induced breast carcinogenesis in MCF10A cells and in rats. 3,6-DHF also increased TET1 and 5hmC levels in MDA-MB-231 cells. Further study indicated that TET1 siRNA and pcDNA3/Myc-DNMT1 inhibited the 3,6-DHF reactivation effect on expression of miR-34a in breast cancer cells. Methylation-specific PCR assays indicated that TET1 siRNA and pcDNA3/Myc-DNMT1 inhibit the effect of 3,6-DHF on the demethylation of the miR-34a promoter. CONCLUSIONS Our study showed that 3,6-DHF effectively increases TET1 expression by inhibiting DNMT1 and DNA hypermethylation, and consequently up-regulates miR-34a in breast carcinogenesis.
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Gan RY, Li HB, Sui ZQ, Corke H. Absorption, metabolism, anti-cancer effect and molecular targets of epigallocatechin gallate (EGCG): An updated review. Crit Rev Food Sci Nutr 2017. [DOI: 10.1080/10408398.2016.1231168 pmid: 27645804] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/30/2022]
Affiliation(s)
- Ren-You Gan
- Department of Food Science and Engineering, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
- School of Biological Sciences, The University of Hong Kong, Hong Kong
| | - Hua-Bin Li
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou, China
| | - Zhong-Quan Sui
- Department of Food Science and Engineering, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Harold Corke
- Department of Food Science and Engineering, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
- School of Biological Sciences, The University of Hong Kong, Hong Kong
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18
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Gan RY, Li HB, Sui ZQ, Corke H. Absorption, metabolism, anti-cancer effect and molecular targets of epigallocatechin gallate (EGCG): An updated review. Crit Rev Food Sci Nutr 2017; 58:924-941. [PMID: 27645804 DOI: 10.1080/10408398.2016.1231168] [Citation(s) in RCA: 252] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Green tea is one of the most popular beverages in the world, especially in Asian countries. Consumption of green tea has been demonstrated to possess many health benefits, which mainly attributed to the main bioactive compound epigallocatechin gallate (EGCG), a flavone-3-ol polyphenol, in green tea. EGCG is mainly absorbed in the intestine, and gut microbiota play a critical role in its metabolism prior to absorption. EGCG exhibits versatile bioactivities, with its anti-cancer effect most attracting due to the cancer preventive effect of green tea consumption, and a great number of studies intensively investigated its anti-cancer effect. In this review, we therefore, first stated the absorption and metabolism process of EGCG, and then summarized its anti-cancer effect in vitro and in vivo, including its manifold anti-cancer actions and mechanisms, especially its anti-cancer stem cell effect, and next highlighted its various molecular targets involved in cancer inhibition. Finally, the anti-cancer effect of EGCG analogs and nanoparticles, as well as the potential cancer promoting effect of EGCG were also discussed. Understanding of the absorption, metabolism, anti-cancer effect and molecular targets of EGCG can be of importance to better utilize it as a chemopreventive and chemotherapeutic agent.
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Affiliation(s)
- Ren-You Gan
- a Department of Food Science and Engineering, School of Agriculture and Biology , Shanghai Jiao Tong University , Shanghai , China.,b School of Biological Sciences , The University of Hong Kong , Hong Kong
| | - Hua-Bin Li
- c Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition , School of Public Health, Sun Yat-Sen University , Guangzhou , China
| | - Zhong-Quan Sui
- a Department of Food Science and Engineering, School of Agriculture and Biology , Shanghai Jiao Tong University , Shanghai , China
| | - Harold Corke
- a Department of Food Science and Engineering, School of Agriculture and Biology , Shanghai Jiao Tong University , Shanghai , China.,b School of Biological Sciences , The University of Hong Kong , Hong Kong
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Liu Y, Zhu L, Hu Y, Peng X, Du J. A novel electrochemical sensor based on a molecularly imprinted polymer for the determination of epigallocatechin gallate. Food Chem 2017; 221:1128-1134. [DOI: 10.1016/j.foodchem.2016.11.047] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Revised: 11/07/2016] [Accepted: 11/08/2016] [Indexed: 01/10/2023]
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20
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Abstract
Cancer remains one of the leading causes of death around the world. Initially it is recognized as a genetic disease, but now it is known to involve epigenetic abnormalities along with genetic alterations. Epigenetics refers to heritable changes that are not encoded in the DNA sequence itself, but play an important role in the control of gene expression. It includes changes in DNA methylation, histone modifications, and RNA interference. Although it is heritable, environmental factors such as diet could directly influence epigenetic mechanisms in humans. This article will focus on the role of dietary patterns and phytochemicals that have been demonstrated to influence the epigenome and more precisely histone and non-histone proteins modulation by acetylation that helps to induce apoptosis and phosphorylation inhibition, which counteracts with cells proliferation. Recent developments discussed here enhance our understanding of how dietary intervention could be beneficial in preventing or treating cancer and improving health outcomes.
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Affiliation(s)
- Wissam Zam
- a Department of Analytical and Food Chemistry , Faculty of Pharmacy, Al-Andalus University for Medical Sciences, Al-Quadmous , Tartous , Syrian Arab Republic
| | - Aziz Khadour
- b Department of Microbiology , Faculty of Pharmacy, Al-Andalus University for Medical Sciences, Al-Quadmous , Tartous , Syrian Arab Republic
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21
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Zhao L, He D, Jiao M, Kong L, Shao C, Chen J, Fang Z, Ma X, Chen H, Li L, Luo S, Zheng N, Chen Y, Wang Q, Fang S. Overexpression of Histone Deacetylase and Amyloid Precursor Protein in Hepatocellular Carcinoma. Technol Cancer Res Treat 2016; 16:586-594. [PMID: 27507654 DOI: 10.1177/1533034616661664] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Epigenetic modifications are involved in the pathogenesis of cancer, and histone deacetylase inhibitors are considered potential therapeutic agents. Histone tails undergo acetylation at lysine residues, which is associated with transcriptional activation. However, previous studies indicated that as histone deacetylase inhibitors, both (-)-epigallocatechin-3-gallate and valproic acid presented the effects of downregulation of amyloid precursor protein expression, which resulted in the induction of apoptosis. The downregulation of amyloid precursor protein, instead of conventionally activating gene expression as histone deacetylase inhibitor, was attractive. However, there was no relevant report on the correlation of the expression of amyloid precursor protein and histone deacetylase 1 in cancer. In the present study, we detected the expression of amyloid precursor protein and histone deacetylase 1 in hepatocellular carcinoma and adjacent tissues, as well as the correlations among histone deacetylase 1, amyloid precursor protein, and tumor stage. The results showed that the expressions of amyloid precursor protein and histone deacetylase 1 were significantly higher in hepatocellular carcinoma tissues than that in adjacent tissues ( P < .05), however, there was no statistical difference between amyloid precursor protein and histone deacetylase 1 with tumor stages. The present findings provided more foundation for the study on amyloid precursor protein metabolism in cancer, especially on the regulation of amyloid precursor protein by histone deacetylases.
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Affiliation(s)
- Luguang Zhao
- 1 DME Center, Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Dan He
- 2 Department of Pathology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Mengmeng Jiao
- 1 DME Center, Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Lingshuo Kong
- 1 DME Center, Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Chunkui Shao
- 2 Department of Pathology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Junli Chen
- 1 DME Center, Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Zhigang Fang
- 1 DME Center, Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xiaohui Ma
- 1 DME Center, Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Huifang Chen
- 1 DME Center, Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Lin Li
- 1 DME Center, Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Si Luo
- 1 DME Center, Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Na Zheng
- 1 DME Center, Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yunbo Chen
- 1 DME Center, Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, China.,3 Institute of geriatrics, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Qi Wang
- 1 DME Center, Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, China.,3 Institute of geriatrics, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Shuhuan Fang
- 1 DME Center, Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, China.,3 Institute of geriatrics, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
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(-)-Epigallocatechin-3-gallate attenuates cognitive deterioration in Alzheimer's disease model mice by upregulating neprilysin expression. Exp Cell Res 2015; 334:136-45. [PMID: 25882496 DOI: 10.1016/j.yexcr.2015.04.004] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Revised: 03/27/2015] [Accepted: 04/05/2015] [Indexed: 01/04/2023]
Abstract
Epigenetic changes are involved in learning and memory, and histone deacetylase (HDAC) inhibitors are considered potential therapeutic agents for Alzheimer's disease (AD). We previously reported that (-)-epigallocatechin-3-gallate (EGCG) acts as an HDAC inhibitor. Here, we demonstrate that EGCG reduced β-amyloid (Aβ) accumulation in vitro and rescued cognitive deterioration in senescence-accelerated mice P8 (SAMP8) via intragastric administration of low- and high-dose EGCG (5 and 15 mg/kg, respectively) for 60 days. The AD brain has decreased levels of the rate-limiting degradation enzyme of Aβ, neprilysin (NEP). We found an association between EGCG-induced reduction in Aβ accumulation and elevated NEP expression. Further, NEP silencing prevented the EGCG-induced Aβ downregulation. Our findings suggest that EGCG might be effective for treating AD.
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Wang Y, Liu N, Bian X, Sun G, Du F, Wang B, Su X, Li D. Epigallocatechin-3-gallate reduces tubular cell apoptosis in mice with ureteral obstruction. J Surg Res 2015; 197:145-54. [PMID: 25913488 DOI: 10.1016/j.jss.2015.03.034] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Revised: 03/04/2015] [Accepted: 03/13/2015] [Indexed: 01/01/2023]
Abstract
BACKGROUND Tubular cell apoptosis plays a crucial role in different kinds of renal diseases. Epigallocatechin-3-gallate (EGCG), a polyphenol extracted from green tea, has been shown to inhibit renal fibrosis in unilateral ureteral obstruction (UUO) mice, but its role in preventing tubular cell apoptosis and the underlying signaling mechanisms still remains unclear. MATERIALS AND METHODS Mice subjected to UUO were intraperitoneally administered EGCG (5 mg/kg) for 14 d. Normal rat kidney proximal tubular epithelial cell line NRK-52E was induced by transforming growth factor β1 (TGF-β1). Periodic acid-schiff and Masson's trichrome staining was used for histologic study. TUNEL, Hoechst staining, and flow cytometry analysis were used to measure the apoptotic status of tubular cells. Western blotting was used to determine the expression of apoptotic-associated proteins and mitogen-activated protein kinase pathway proteins. RESULTS EGCG significantly attenuated tubular injury and renal tubulointerstitial fibrosis in the obstructed kidneys of UUO mice. In addition, EGCG prevented UUO and TGF-β1-induced tubular apoptosis in a dose-dependent manner. In parallel, protein expression of B-clell lymphoma-2 (Bcl-2) was upregulated and protein expressions of Bcl-2 accosiated X protein (Bax), cleaved caspase 3, and cleaved poly ADP-ribose polymerase (PARP) were downregulated by EGCG. Furthermore, UUO and TGF-β1-stimulated phosphorylation of mitogen-activated protein kinase was inhibited by EGCG. CONCLUSIONS EGCG effectively reduces tubular cell apoptosis induced by UUO and may have potential as a clinical treatment in patients with chronic kidney disease.
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Affiliation(s)
- Yanqiu Wang
- Department of Nephrology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China
| | - Na Liu
- Department of Nephrology, Ordos Central Hospital, Ordos, Inner Mongolia, People's Republic of China
| | - Xiaohui Bian
- Department of Nephrology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China
| | - Guangping Sun
- Department of Nephrology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China
| | - Feng Du
- Department of Nephrology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China
| | - Bowen Wang
- Department of Laboratory Medicine, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China
| | - Xuesong Su
- Department of Nephrology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China
| | - Detian Li
- Department of Nephrology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China.
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