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Pouliquen DL, Trošelj KG, Anto RJ. Curcuminoids as Anticancer Drugs: Pleiotropic Effects, Potential for Metabolic Reprogramming and Prospects for the Future. Pharmaceutics 2023; 15:1612. [PMID: 37376060 DOI: 10.3390/pharmaceutics15061612] [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: 04/28/2023] [Revised: 05/21/2023] [Accepted: 05/24/2023] [Indexed: 06/29/2023] Open
Abstract
The number of published studies on curcuminoids in cancer research, including its lead molecule curcumin and synthetic analogs, has been increasing substantially during the past two decades. Insights on the diversity of inhibitory effects they have produced on a multitude of pathways involved in carcinogenesis and tumor progression have been provided. As this wealth of data was obtained in settings of various experimental and clinical data, this review first aimed at presenting a chronology of discoveries and an update on their complex in vivo effects. Secondly, there are many interesting questions linked to their pleiotropic effects. One of them, a growing research topic, relates to their ability to modulate metabolic reprogramming. This review will also cover the use of curcuminoids as chemosensitizing molecules that can be combined with several anticancer drugs to reverse the phenomenon of multidrug resistance. Finally, current investigations in these three complementary research fields raise several important questions that will be put among the prospects for the future research related to the importance of these molecules in cancer research.
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Affiliation(s)
- Daniel L Pouliquen
- Université d'Angers, Inserm, CNRS, Nantes Université, CRCI2NA, F-49000 Angers, France
| | - Koraljka Gall Trošelj
- Laboratory for Epigenomics, Division of Molecular Medicine, Ruđer Bošković Institute, 10000 Zagreb, Croatia
| | - Ruby John Anto
- Molecular Bioassay Laboratory, Institute of Advanced Virology, Thiruvananthapuram 695317, India
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Vascular Protective Effect and Its Possible Mechanism of Action on Selected Active Phytocompounds: A Review. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:3311228. [PMID: 35469164 PMCID: PMC9034927 DOI: 10.1155/2022/3311228] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 03/22/2022] [Accepted: 03/30/2022] [Indexed: 12/16/2022]
Abstract
Vascular endothelial dysfunction is characterized by an imbalance of vasodilation and vasoconstriction, deficiency of nitric oxide (NO) bioavailability and elevated reactive oxygen species (ROS), and proinflammatory factors. This dysfunction is a key to the early pathological development of major cardiovascular diseases including hypertension, atherosclerosis, and diabetes. Therefore, modulation of the vascular endothelium is considered an important therapeutic strategy to maintain the health of the cardiovascular system. Epidemiological studies have shown that regular consumption of medicinal plants, fruits, and vegetables promotes vascular health, lowering the risk of cardiovascular diseases. This is mainly attributed to the phytochemical compounds contained in these resources. Various databases, including Google Scholar, MEDLINE, PubMed, and the Directory of Open Access Journals, were searched to identify studies demonstrating the vascular protective effects of phytochemical compounds. The literature had revealed abundant data on phytochemical compounds protecting and improving the vascular system. Of the numerous compounds reported, curcumin, resveratrol, cyanidin-3-glucoside, berberine, epigallocatechin-3-gallate, and quercetin are discussed in this review to provide recent information on their vascular protective mechanisms in vivo and in vitro. Phytochemical compounds are promising therapeutic agents for vascular dysfunction due to their antioxidative mechanisms. However, future human studies will be necessary to confirm the clinical effects of these vascular protective mechanisms.
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Zhang Y, Tu L, Zhou X, Li B. Curcumin-Mediated Induction of Apoptosis in Human Glioma CHME Cells. Med Sci Monit Basic Res 2018; 24:216-224. [PMID: 30531680 PMCID: PMC6301257 DOI: 10.12659/msmbr.912313] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Background Curcumin has clear anti-tumor activity in various carcinomas. It regulates various signaling pathways like Wnt/β-catenin and JAK2/STAT3, which play vital roles in cell proliferation of several carcinomas, but to the best of our knowledge, there are currently no published reports on human glioma CHME cells. Therefore, the aim of this study was to explore the effect of curcumin on human glioma CHME cells. Material/Methods The CHME cell line was purchased from American Type Culture Collection (ATCC). The expressions of caspases 3, caspases 9, PARP, BAX, and BCL2 were detected by Western blot. Annexin V FITC, mitochondrial membrane potential, and reactive oxygen species were detected by flow cytometry. DAPI staining was detected by fluorescence microscopy. Cell viability was assessed by 3-(4,5-Dimethylthiazol-2-yl)-2,5-Diphenyltetrazolium Bromide (MTT) assay. Results We found that curcumin has cytotoxic activity in human glioma CHME cells, as shown by DAPI staining, annexin V/PI, and nuclear morphology. We found that cell growth decreased with increased concentration of curcumin, as well as sowing effects on expression of caspase-3, caspase-9, and cleavage of PARP, which suggests apoptotic cascade activity. The increase in reactive oxygen species and loss of mitochondrial membrane potential (Δψmt) in concentration-dependent manners suggests biochemical induction of apoptosis in CHME cells. Conclusions Curcumin has effective anticancer activity in human glioma CHME cells by inducing the apoptotic pathway.
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Affiliation(s)
- Yunqiang Zhang
- Department of Neurosurgery, Chenzhou No. 1 People's Hospital, Chenzhou, Hunan, China (mainland)
| | - Lijun Tu
- Electrocardiographic Room, Chenzhou No. 1 People's Hospital, Chenzhou, Hunan, China (mainland)
| | - Xiuhong Zhou
- Department of Pathophysiology, University of South China, Hengyang, Hunan, China (mainland)
| | - Bin Li
- Department of Neurosurgery, Chenzhou No. 1 People's Hospital, Chenzhou, Hunan, China (mainland)
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Siddiqui FA, Prakasam G, Chattopadhyay S, Rehman AU, Padder RA, Ansari MA, Irshad R, Mangalhara K, Bamezai RNK, Husain M, Ali SM, Iqbal MA. Curcumin decreases Warburg effect in cancer cells by down-regulating pyruvate kinase M2 via mTOR-HIF1α inhibition. Sci Rep 2018; 8:8323. [PMID: 29844464 PMCID: PMC5974195 DOI: 10.1038/s41598-018-25524-3] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 04/18/2018] [Indexed: 12/21/2022] Open
Abstract
Warburg effect is an emerging hallmark of cancer cells with pyruvate kinase M2 (PKM2) as its key regulator. Curcumin is an extensively-studied anti-cancer compound, however, its role in affecting cancer metabolism remains poorly understood. Herein, we show that curcumin inhibits glucose uptake and lactate production (Warburg effect) in a variety of cancer cell lines by down-regulating PKM2 expression, via inhibition of mTOR-HIF1α axis. Stable PKM2 silencing revealed that PKM2 is required for Warburg effect and proliferation of cancer cells. PKM2 over-expression abrogated the effects of curcumin, demonstrating that inhibition of Warburg effect by curcumin is PKM2-mediated. High PKM2 expression correlated strongly with poor overall survival in cancer, suggesting the requirement of PKM2 in cancer progression. The study unravels novel PKM2-mediated inhibitory effect of curcumin on metabolic capacities of cancer cells. To the best of our knowledge, this is the first study linking curcumin with PKM2-driven cancer glycolysis, thus, providing new perspectives into the mechanism of its anticancer activity.
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Affiliation(s)
- Farid Ahmad Siddiqui
- Department of Biotechnology, Faculty of Natural Sciences, Jamia Millia Islamia (A Central University), Jamia Nagar, New Delhi, 110025, India
| | - Gopinath Prakasam
- School of Life Sciences, Jawaharlal Nehru University, New Mehrauli Road, New Delhi, 110067, India
| | - Shilpi Chattopadhyay
- Department of Toxicology, School of Chemical and Life Sciences, Jamia Hamdard (Deemed University), New Delhi, 110062, India
| | - Asad Ur Rehman
- Department of Biotechnology, Faculty of Natural Sciences, Jamia Millia Islamia (A Central University), Jamia Nagar, New Delhi, 110025, India
- Department of Biosciences, Faculty of Natural Sciences, Jamia Millia Islamia (A Central University), Jamia Nagar, New Delhi, 110025, India
| | - Rayees Ahmad Padder
- Department of Biotechnology, Faculty of Natural Sciences, Jamia Millia Islamia (A Central University), Jamia Nagar, New Delhi, 110025, India
| | - Mohammad Afaque Ansari
- Department of Biotechnology, Faculty of Natural Sciences, Jamia Millia Islamia (A Central University), Jamia Nagar, New Delhi, 110025, India
| | - Rasha Irshad
- Department of Biotechnology, Faculty of Natural Sciences, Jamia Millia Islamia (A Central University), Jamia Nagar, New Delhi, 110025, India
| | - Kailash Mangalhara
- School of Life Sciences, Jawaharlal Nehru University, New Mehrauli Road, New Delhi, 110067, India
| | - Rameshwar N K Bamezai
- School of Life Sciences, Jawaharlal Nehru University, New Mehrauli Road, New Delhi, 110067, India
| | - Mohammad Husain
- Department of Biotechnology, Faculty of Natural Sciences, Jamia Millia Islamia (A Central University), Jamia Nagar, New Delhi, 110025, India
| | - Syed Mansoor Ali
- Department of Biotechnology, Faculty of Natural Sciences, Jamia Millia Islamia (A Central University), Jamia Nagar, New Delhi, 110025, India
| | - Mohammad Askandar Iqbal
- Department of Biotechnology, Faculty of Natural Sciences, Jamia Millia Islamia (A Central University), Jamia Nagar, New Delhi, 110025, India.
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Natural Nuclear Factor Kappa Beta Inhibitors: Safe Therapeutic Options for Inflammatory Bowel Disease. Inflamm Bowel Dis 2016; 22:719-23. [PMID: 26717321 DOI: 10.1097/mib.0000000000000655] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Inflammatory bowel disease (IBD) is a chronic and debilitating condition classified as ulcerative colitis and Crohn's disease. IBD usually happens as result of immune dysfunction in the intestinal mucosa resulting in epithelial barrier dysfunction, which leads to exposure of the mucosal immune system to luminal antigenic material. This results in activation of inflammation, which is our bodies natural defense system; however, chronic inflammation leads to barrier dysfunction, which triggers a cycle of inflammation and further barrier dysfunction. This barrier breakdown results in the uncontrolled progression of IBD throughout the intestine. Despite the therapeutic advances made over the last decade, the current first line of treatment of IBD is limited to immunosuppressive and anti-inflammatory drugs, which need to be taken regularly and have significant side effects to the patients. Prolonged inflammation may increase the risk of intestinal malignancy. The role of nuclear factor kappa beta (NF-κβ) has been established in the regulation of innate immunity and inflammation. NF-κβ has also shown to be involved in critical events linking inflammation and cancer development. Recent investigations suggest that the NF-κβ signaling cascade may be the central mediator of gastrointestinal inflammation in IBD and malignancies including esophageal, gastric, and colorectal cancers. In this review, the therapeutic potential of natural NF-κβ inhibitors as safe therapeutic options for the treatment of IBD will be discussed.
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Tuorkey MJ. Curcumin a potent cancer preventive agent: Mechanisms of cancer cell killing. Interv Med Appl Sci 2014; 6:139-46. [PMID: 25598986 DOI: 10.1556/imas.6.2014.4.1] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Revised: 06/29/2014] [Accepted: 08/01/2014] [Indexed: 12/13/2022] Open
Abstract
There is no doubt that diet could effectively improve health and halt cancers. Dietary phytochemical compounds and their derivatives represent a cornucopia of effectively anticancer compounds. This review discusses existing data on the anticancer activities of curcumin, and then offers possible explanations for and mechanisms of its cancer-preventive action. This review also offers insights into the molecular mechanism and targets through which curcumin modulates cell cycle, apoptotic signals, anti-apoptotic proteins, miRNAs, Wnt/beta-catenin signaling, protein kinases, nuclear factor-κB, proteasome activation, epigenetic regulation including DNA methylation and histone modification. Finally, this review provides explanations for how curcumin reverses the multi-drug resistance (MDR) of cancer cells.
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Liu X, Sun K, Song A, Zhang X, Zhang X, He X. Curcumin inhibits proliferation of gastric cancer cells by impairing ATP-sensitive potassium channel opening. World J Surg Oncol 2014; 12:389. [PMID: 25523120 PMCID: PMC4395964 DOI: 10.1186/1477-7819-12-389] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Accepted: 12/03/2014] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND This study was aimed to investigate whether ATP-sensitive potassium channel (KATP) is involved in curcumin's anti-proliferative effects against gastric cancer. METHODS In an in vitro study, gastric cancer cell line SGC-7901 was treated with curcumin at serial concentrations and co-administrated with the KATP opener, diazoxide. The effect of curcumin and diazoxide on proliferation were assessed by MTT assay. Mitochondrial membrane potential (MMP) was studied by flow cytometry detection of rhodamine 123 staining. Apoptosis was evaluated by flow cytometry detection of Annexin V propidium iodide double staining. In an in vivo study, SGC-7901 cells were planted into nude mice as xenografts. Animals were treated with curcumin co-administered with diazoxide. Tumor volume and tumor weight were observed. RESULTS Curcumin incubation significantly induced loss of MMP in SGC-7901 cells in a dose- dependent manner (P < 0.05); the cell apoptotic rate also dramatically increased after curcumin incubation in a dose-dependent manner (P < 0.05). After co-administration with diazoxide, however, we found that both the MMP-loss-inducing and the apoptosis-inducing effects of curcumin in SGC-7901 cells were significantly impaired (all P < 0.05). As a result, the proliferation of SGC-7901 cells was maintained by diazoxide treatment. CONCLUSIONS Impaired mitoKATP opening causes MMP loss, and is involved in curcumin-induced apoptosis in gastric cancer.
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Affiliation(s)
- Xiaohong Liu
- Department of General Surgery, second affiliated hospital of Lanzhou University, Lanzhou, Gansu, 730000, China.
| | - Kai Sun
- The Second Department of Thoracic Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China.
| | - Ailin Song
- Department of General Surgery, second affiliated hospital of Lanzhou University, Lanzhou, Gansu, 730000, China.
| | - Xiaoyun Zhang
- Department of Pathology, Lanzhou University Medical School, 199 West Donggang Road, Lanzhou, Gansu, 730000, China.
| | - Xu Zhang
- Department of Pathology, Lanzhou University Medical School, 199 West Donggang Road, Lanzhou, Gansu, 730000, China.
| | - Xiaodong He
- Lanzhou University, 199 West Donggang Road, Lanzhou, Gansu, 730000, China.
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8
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Curcumin and inflammatory bowel disease: potential and limits of innovative treatments. Molecules 2014; 19:21127-53. [PMID: 25521115 PMCID: PMC6271352 DOI: 10.3390/molecules191221127] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Revised: 12/08/2014] [Accepted: 12/09/2014] [Indexed: 02/08/2023] Open
Abstract
Curcumin belongs to the family of natural compounds collectively called curcuminoids and it possesses remarkable beneficial anti-oxidant, anti-inflammatory, anti-cancer, and neuroprotective properties. Moreover it is commonly assumed that curcumin has also been suggested as a remedy for digestive diseases such as inflammatory bowel diseases (IBD), a chronic immune disorder affecting the gastrointestinal tract and that can be divided in two major subgroups: Crohn’s disease (CD) and Ulcerative Colitis (UC), depending mainly on the intestine tract affected by the inflammatory events. The chronic and intermittent nature of IBD imposes, where applicable, long-term treatments conducted in most of the cases combining different types of drugs. In more severe cases and where there has been no good response to the drugs, a surgery therapy is carried out. Currently, IBD-pharmacological treatments are generally not curative and often present serious side effects; for this reason, being known the relationship between nutrition and IBD, it is worthy of interesting the study and the development of new dietary strategy. The curcumin principal mechanism is the suppression of IBD inflammatory compounds (NF-κB) modulating immune response. This review summarizes literature data of curcumin as anti-inflammatory and anti-oxidant in IBD, trying to understand the different effects in CD e UC.
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9
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Abo-Salem OM, Harisa GI, Ali TM, El-Sayed ESM, Abou-Elnour FM. Curcumin Ameliorates Streptozotocin-Induced Heart Injury in Rats. J Biochem Mol Toxicol 2014; 28:263-70. [DOI: 10.1002/jbt.21562] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Revised: 02/13/2014] [Accepted: 03/28/2014] [Indexed: 11/07/2022]
Affiliation(s)
- Osama M. Abo-Salem
- Department of Laboratory Sciences and Clinical Technology; College of Applied Medical Sciences; Taif University; Taif Saudi Arabia
- Department of Pharmacology and Toxicology; Faculty of Pharmacy (Boys), Al-Azhar University; Nasr-City Cairo Egypt
| | - Gamaleldin I. Harisa
- Department of Pharmaceutics; Kayyali Chair for Pharmaceutical Industry, College of Pharmacy, King Saud University; Riyadh 11451 Saudi Arabia
- Department of Biochemistry; Faculty of Pharmacy (Boys), Al-Azhar University; Nasr-City Cairo Egypt
| | - Tarek M. Ali
- Department of Laboratory Sciences and Clinical Technology; College of Applied Medical Sciences; Taif University; Taif Saudi Arabia
- Department of Physiology; Faculty of medicine, Beni-Suef University; Egypt
| | - El-Sayed M. El-Sayed
- Department of Pharmacology and Toxicology; Faculty of Pharmacy (Boys), Al-Azhar University; Nasr-City Cairo Egypt
| | - Fatma M. Abou-Elnour
- Clinical Pathology Department; Blood Bank and Laboratories Administration, Ministry of Health; Taif Saudi Arabia
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Yoon SW, Jeong JS, Kim JH, Aggarwal BB. Cancer Prevention and Therapy: Integrating Traditional Korean Medicine Into Modern Cancer Care. Integr Cancer Ther 2013; 13:310-31. [PMID: 24282099 DOI: 10.1177/1534735413510023] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
In spite of billions of dollars spent on cancer research each year, overall cancer incidence and cancer survival has not changed significantly in the last half century. Instead, the recent projection from the World Health Organization suggests that global cancer incidence and death is expected to double within the next decade. This requires an "out of the box" thinking approach. While traditional medicine used for thousands of years is safe and affordable, its efficacy and mechanism of action are not fully reported. Demonstrating that traditional medicine is efficacious and how it works can provide a "bed to bench" and "bench to bed" back approach toward prevention and treatment of cancer. This current review is an attempt to describe the contributions of traditional Korean medicine (TKM) to modern medicine and, in particular, cancer treatment. TKM suggests that cancer is an outcome of an imbalance of body, mind, and spirit; thus, it requires a multimodal treatment approach that involves lifestyle modification, herbal prescription, acupuncture, moxibustion, traditional exercise, and meditation to restore the balance. Old wisdoms in combination with modern science can find a new way to deal with the "emperor of all maladies."
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Affiliation(s)
- Seong Woo Yoon
- Department of Korean Internal Medicine, Kyung Hee University Korean Medicine Hospital at Gangdong, Seoul, Republic of Korea
| | - Jong Soo Jeong
- Department of Korean Internal Medicine, Kyung Hee University Korean Medicine Hospital at Gangdong, Seoul, Republic of Korea
| | - Ji Hye Kim
- The University of Texas M. D. Anderson Cancer Center, Houston, TX, USA
| | - Bharat B Aggarwal
- The University of Texas M. D. Anderson Cancer Center, Houston, TX, USA
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Teiten MH, Dicato M, Diederich M. Curcumin as a regulator of epigenetic events. Mol Nutr Food Res 2013; 57:1619-29. [DOI: 10.1002/mnfr.201300201] [Citation(s) in RCA: 123] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Revised: 03/18/2013] [Accepted: 03/21/2013] [Indexed: 12/16/2022]
Affiliation(s)
- Marie-Hélène Teiten
- Laboratoire de Biologie Moléculaire et Cellulaire du Cancer; Hôpital Kirchberg, Luxembourg; Luxembourg
| | - Mario Dicato
- Laboratoire de Biologie Moléculaire et Cellulaire du Cancer; Hôpital Kirchberg, Luxembourg; Luxembourg
| | - Marc Diederich
- Department of Pharmacy, College of Pharmacy; Seoul National University; Seoul Korea
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12
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Wright LE, Frye JB, Gorti B, Timmermann BN, Funk JL. Bioactivity of turmeric-derived curcuminoids and related metabolites in breast cancer. Curr Pharm Des 2013; 19:6218-25. [PMID: 23448448 PMCID: PMC3883055 DOI: 10.2174/1381612811319340013] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Accepted: 02/18/2013] [Indexed: 11/22/2022]
Abstract
While the chemotherapeutic effect of curcumin, one of three major curcuminoids derived from turmeric, has been reported, largely unexplored are the effects of complex turmeric extracts more analogous to traditional medicinal preparations, as well as the relative importance of the three curcuminoids and their metabolites as anti-cancer agents. These studies document the pharmacodynamic effects of chemically-complex turmeric extracts relative to curcuminoids on human breast cancer cell growth and tumor cell secretion of parathyroid hormone-related protein (PTHrP), an important driver of cancer bone metastasis. Finally, relative effects of structurallyrelated metabolites of curcuminoids were assessed on the same endpoints. We report that 3 curcuminoid-containing turmeric extracts differing with respect to the inclusion of additional naturally occurring chemicals (essential oils and/or polar compounds) were equipotent in inhibiting human breast cancer MDA-MB-231 cell growth (IC50=10-16µg/mL) and secretion of osteolytic PTHrP (IC50=2-3µg/mL) when concentrations were normalized to curcuminoid content. Moreover, these effects were curcuminoid-specific, as botanically-related gingerol containing extracts had no effect. While curcumin and bis-demethoxycurcumin were equipotent to each other and to the naturally occurring curcuminoid mixture (IC50=58µM), demethoxycurcumin did not have any effect on cell growth. However, each of the individual curcuminoids inhibited PTHrP secretion (IC50=22-31µM) to the same degree as the curcuminoid mixture (IC50=16µM). Degradative curcuminoid metabolites (vanillin and ferulic acid) did not inhibit cell growth or PTHrP, while reduced metabolites (tetrahydrocurcuminoids) had inhibitory effects on cell growth and PTHrP secretion but only at concentrations ≥10-fold higher than the curcuminoids. These studies emphasize the structural and biological importance of curcuminoids in the anti-breast cancer effects of turmeric and contradict recent assertions that certain of the curcuminoid metabolites studied here mediate these anti-cancer effects.
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Affiliation(s)
- Laura E. Wright
- Endocrinology Section, Department of Medicine, The University of Arizona, Tucson, AZ
| | - Jen B. Frye
- Endocrinology Section, Department of Medicine, The University of Arizona, Tucson, AZ
| | - Bhavana Gorti
- Endocrinology Section, Department of Medicine, The University of Arizona, Tucson, AZ
| | - Barbara N. Timmermann
- Department of Medicinal Chemistry, School of Pharmacy, The University of Kansas, Lawrence, KS
| | - Janet L. Funk
- Endocrinology Section, Department of Medicine, The University of Arizona, Tucson, AZ
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Abstract
Rottlerin and curcumin are natural plant polyphenols with a long tradition in folk medicine. Over the past two decades, curcumin has been extensively investigated, while rottlerin has received much less attention, in part, as a consequence of its reputation as a selective PKCδ inhibitor. A comparative analysis of genomic, proteomic, and cell signaling studies revealed that rottlerin and curcumin share a number of targets and have overlapping effects on many biological processes. Both molecules, indeed, modulate the activity and/or expression of several enzymes (PKCδ, heme oxygenase, DNA methyltransferase, cyclooxygenase, lipoxygenase) and transcription factors (NF-κB, STAT), and prevent aggregation of different amyloid precursors (α-synuclein, amyloid Aβ, prion proteins, lysozyme), thereby exhibiting convergent antioxidant, anti-inflammatory, and antiamyloid actions. Like curcumin, rottlerin could be a promising candidate in the fight against a variety of human diseases.
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Affiliation(s)
- Emanuela Maioli
- Department of Physiology, University of Siena, Siena, Italy.
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Esatbeyoglu T, Huebbe P, Ernst IMA, Chin D, Wagner AE, Rimbach G. Curcumin--from molecule to biological function. Angew Chem Int Ed Engl 2012; 51:5308-32. [PMID: 22566109 DOI: 10.1002/anie.201107724] [Citation(s) in RCA: 568] [Impact Index Per Article: 47.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2011] [Indexed: 12/13/2022]
Abstract
Turmeric is traditionally used as a spice and coloring in foods. It is an important ingredient in curry and gives curry powder its characteristic yellow color. As a consequence of its intense yellow color, turmeric, or curcumin (food additive E100), is used as a food coloring (e.g. mustard). Turmeric contains the curcuminoids curcumin, demethoxycurcumin, and bisdemethoxycurcumin. Recently, the health properties (neuroprotection, chemo-, and cancer prevention) of curcuminoids have gained increasing attention. Curcuminoids induce endogenous antioxidant defense mechanisms in the organism and have anti-inflammatory activity. Curcuminoids influence gene expression as well as epigenetic mechanisms. Synthetic curcumin analogues also exhibit biological activity. This Review describes the development of curcumin from a "traditional" spice and food coloring to a "modern" biological regulator.
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Affiliation(s)
- Tuba Esatbeyoglu
- Abteilung Lebensmittelwissenschaft, Institut für Humanernährung und Lebensmittelkunde, Christian-Albrechts-Universität zu Kiel, Kiel, Deutschland
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15
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Esatbeyoglu T, Huebbe P, Ernst IMA, Chin D, Wagner AE, Rimbach G. Curcumin - vom Molekül zur biologischen Wirkung. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201107724] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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16
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Wang J, Wang Z, Wang H, Zhao J, Zhang Z. Curcumin Induces Apoptosis in EJ Bladder Cancer Cells via Modulating C-Myc and PI3K/Akt Signaling Pathway. World J Oncol 2011; 2:113-122. [PMID: 29147235 PMCID: PMC5649664 DOI: 10.4021/wjon335w] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/26/2011] [Indexed: 12/25/2022] Open
Abstract
Background Cancer chemopreventive agent curcumin has been shown to possess cell growth inhibition and apoptosis induction properties in several types of cancer. However, the detailed molecular mechanisms of the compound remain far from clear in EJ bladder cancer cells. Methods The effect of curcumin on EJ cell growth and apoptosis was detected by MTT assays and flow cytometry. The phosphorylation levels of PTEN, PDK1, Akt, GSK-3β, c-Raf, and Bad and the expression levels of c-myc, Bax, Bcl-2, caspase-9, caspase-7, caspase-3, and PARP following curcumin administration were examined by immunoblots. Results Curcumin suppressed the growth of EJ cells in a time and concentration dependent manner. Immunoblot showed that curcumin increased expression levels of c-myc and inhibited the activation of PI3K/Akt pathway in a time-dependent manner in EJ cells. Activation of PTEN, GSK-3β, c-Raf, caspase-9, caspase-7, and caspase-3, cleavage of PARP, upregulation of Bad and Bax, and downregulation of Akt and Bcl-2 were also found in curcumin-treated EJ cells. Conclusions These findings establish a mechanistic linkup or interaction between c-myc, Bax, Bad, Bcl-2, caspase cascades, PI3K/Akt pathway and curcumin- induced apoptosis of EJ cells, suggesting that c-myc and PI3K/Akt signaling pathway play important roles in curcumin-induced apoptosis of EJ bladder cancer cells.
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Affiliation(s)
- Jingyu Wang
- Institute of Pathophysiology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Zhiping Wang
- Institute of Urology, Second Hospital, Lanzhou University, Lanzhou, 730030, China
| | - Hanzhang Wang
- Institute of Urology, Second Hospital, Lanzhou University, Lanzhou, 730030, China
| | - Junli Zhao
- Institute of Urology, Second Hospital, Lanzhou University, Lanzhou, 730030, China
| | - Zhewen Zhang
- School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, China
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17
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Semsri S, Krig SR, Kotelawala L, Sweeney CA, Anuchapreeda S. Inhibitory mechanism of pure curcumin on Wilms' tumor 1 (WT1) gene expression through the PKCα signaling pathway in leukemic K562 cells. FEBS Lett 2011; 585:2235-42. [PMID: 21658388 DOI: 10.1016/j.febslet.2011.05.043] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2010] [Revised: 03/29/2011] [Accepted: 05/16/2011] [Indexed: 11/19/2022]
Abstract
The aim of this study was to investigate the inhibitory mechanism of pure curcumin on WT1 expression in leukemic K562 cells. Pure curcumin suppressed WT1 expression, independent of effects on protein degradation or WT1 mRNA stability. Chromatin immunoprecipitation and reporter gene assays indicate that pure curcumin treatment attenuates WT1 auto-regulation. Interestingly, PKCα inhibition mimicks the repressive effects of pure curcumin in K562 cells. Conversely, myristoylated PKCα over-expression increased WT1 expression and reversed the inhibitory effect of pure curcumin. Our study indicates that pure curcumin attenuates WT1 auto-regulatory function through inhibition of PKCα signaling in K562 cells.
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Affiliation(s)
- Suwanna Semsri
- Division of Clinical Microscopy, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand
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18
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Yao H, Xu W, Shi X, Zhang Z. Dietary flavonoids as cancer prevention agents. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART C, ENVIRONMENTAL CARCINOGENESIS & ECOTOXICOLOGY REVIEWS 2011; 29:1-31. [PMID: 21424974 DOI: 10.1080/10590501.2011.551317] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Dietary agents identified from fruits and vegetables contribute to keeping balanced cell proliferation and preventing cell carcinogenesis. Dietary flavonoids, combined with other components such as various vitamins, play an important role in cancer prevention. Flavonoids act on reactive oxygen species, cell signal transduction pathways related to cellular proliferation, apoptosis, and angiogenesis. Many studies demonstrate that flavonoids are responsible for chemoprevention, although mechanisms of action remain to be investigated. Overall, exciting data show that dietary flavonoids could be considered as a useful cancer preventive approach. This review summarizes recent advancements on potential cancer preventive effects and mechanic insight of dietary flavonoids.
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Affiliation(s)
- Hua Yao
- Department of Stomatology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
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19
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Leonarduzzi G, Sottero B, Poli G. Targeting tissue oxidative damage by means of cell signaling modulators: The antioxidant concept revisited. Pharmacol Ther 2010; 128:336-74. [DOI: 10.1016/j.pharmthera.2010.08.003] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2010] [Accepted: 08/02/2010] [Indexed: 12/25/2022]
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20
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Ronda AC, Buitrago C, Boland R. Role of estrogen receptors, PKC and Src in ERK2 and p38 MAPK signaling triggered by 17β-estradiol in skeletal muscle cells. J Steroid Biochem Mol Biol 2010; 122:287-94. [PMID: 20478382 DOI: 10.1016/j.jsbmb.2010.05.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2009] [Revised: 04/20/2010] [Accepted: 05/06/2010] [Indexed: 12/30/2022]
Abstract
We have previously reported in C2C12 murine skeletal muscle cells that 10(-8)M 17β-estradiol promotes MAPKs stimulation which in turn mediates the activation of CREB and Elk-1 transcription factors. In this work, we demonstrated that the hormone induces ERK2 phosphorylation (without affecting ERK1 activation) and also stimulates p38 MAPK, both in a dose-dependent manner. Moreover, estrogen receptors involvement in MAPKs activation by the estrogen was studied. The use of ICI182780 (1 μM), an antagonist of ERs, and specific siRNAs to block ERα and ERβ expression, demonstrated that ERα mediates ERK2 activation but not p38 MAPK phosphorylation by 17β-estradiol, and that ERβ isoform is not implicated in MAPKs activation by the hormone. Furthermore, Src and PKC contribution in estrogen stimulation of the MAPKs was investigated. Compounds PP2 and Ro318220, Src and PKC family inhibitors, respectively abrogated ERK2 and p38 MAPK phosphorylation by 17β-estradiol. Of interest, the hormone was able to induce Src and PKCδ activation. In addition, Ro318220 decreased estrogen-dependent Src modulation implicating PKC in hormone upregulation of Src. Accordingly, PP2 and Ro318220 suppressed CREB and Elk-1 phosphorylation as well as c-Fos and c-Jun oncoprotein levels induced by 17β-estradiol. Altogether, these data indicate that 17β-estradiol activates ERK2 through ERα and p38 MAPK in an ERα/β-independent manner and that PKC and Src proteins are key upstream components on MAPKs activation in C2C12 skeletal muscle cells.
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Affiliation(s)
- Ana C Ronda
- Departamento de Biología, Bioquímica & Farmacia, Universidad Nacional del Sur, San Juan 670, 8000 Bahía Blanca, Argentina
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21
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Kim JW, Amin ARMR, Shin DM. Chemoprevention of head and neck cancer with green tea polyphenols. Cancer Prev Res (Phila) 2010; 3:900-9. [PMID: 20663981 DOI: 10.1158/1940-6207.capr-09-0131] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Recently, squamous cell carcinoma of the head and neck chemoprevention research has made major advances with novel clinical trial designs suited for the purpose, use of biomarkers to identify high-risk patients, and the emergence of numerous molecularly targeted agents and natural dietary compounds. Among many natural compounds, green tea polyphenols, particularly (-)-epigallocatechin-3-gallate (EGCG), possess remarkable potential as chemopreventive agents. EGCG modulates several key molecular signaling pathways at multiple levels and has synergistic or additive effects when combined with many other natural or synthetic compounds. This review will provide an update of the potential of green tea polyphenols, particularly EGCG, for the chemoprevention of squamous cell carcinoma of the head and neck.
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22
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Yallapu MM, Jaggi M, Chauhan SC. beta-Cyclodextrin-curcumin self-assembly enhances curcumin delivery in prostate cancer cells. Colloids Surf B Biointerfaces 2010; 79:113-25. [PMID: 20456930 DOI: 10.1016/j.colsurfb.2010.03.039] [Citation(s) in RCA: 353] [Impact Index Per Article: 25.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2010] [Accepted: 03/26/2010] [Indexed: 01/22/2023]
Abstract
Curcumin, a hydrophobic polyphenolic compound derived from the rhizome of the herb Curcuma longa, possesses a wide range of biological applications including cancer therapy. However, its prominent application in cancer treatment is limited due to sub-optimal pharmacokinetics and poor bioavailability at the tumor site. In order to improve its hydrophilic and drug delivery characteristics, we have developed a beta-cyclodextrin (CD) mediated curcumin drug delivery system via encapsulation technique. Curcumin encapsulation into the CD cavity was achieved by inclusion complex mechanism. Curcumin encapsulation efficiency was improved by increasing the ratio of curcumin to CD. The formations of CD-curcumin complexes were characterized by Fourier transform infrared (FTIR), differential scanning calorimetry (DSC), thermo-gravimetric analysis (TGA), scanning electron microscope (SEM), and transmission electron microscope (TEM) analyses. An optimized CD-curcumin complex (CD30) was evaluated for intracellular uptake and anti-cancer activity. Cell proliferation and clonogenic assays demonstrated that beta-cyclodextrin-curcumin self-assembly enhanced curcumin delivery and improved its therapeutic efficacy in prostate cancer cells compared to free curcumin.
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Affiliation(s)
- Murali Mohan Yallapu
- Cancer Biology Research Center, Sanford Research/USD, Sioux Falls, SD 57105, USA
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23
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Tanwar V, Sachdeva J, Kishore K, Mittal R, Nag TC, Ray R, Kumari S, Arya DS. Dose-dependent actions of curcumin in experimentally induced myocardial necrosis: a biochemical, histopathological, and electron microscopic evidence. Cell Biochem Funct 2010; 28:74-82. [DOI: 10.1002/cbf.1623] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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24
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Ravindran J, Prasad S, Aggarwal BB. Curcumin and cancer cells: how many ways can curry kill tumor cells selectively? AAPS J 2009; 11:495-510. [PMID: 19590964 PMCID: PMC2758121 DOI: 10.1208/s12248-009-9128-x] [Citation(s) in RCA: 488] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2009] [Accepted: 06/17/2009] [Indexed: 02/03/2023] Open
Abstract
Cancer is a hyperproliferative disorder that is usually treated by chemotherapeutic agents that are toxic not only to tumor cells but also to normal cells, so these agents produce major side effects. In addition, these agents are highly expensive and thus not affordable for most. Moreover, such agents cannot be used for cancer prevention. Traditional medicines are generally free of the deleterious side effects and usually inexpensive. Curcumin, a component of turmeric (Curcuma longa), is one such agent that is safe, affordable, and efficacious. How curcumin kills tumor cells is the focus of this review. We show that curcumin modulates growth of tumor cells through regulation of multiple cell signaling pathways including cell proliferation pathway (cyclin D1, c-myc), cell survival pathway (Bcl-2, Bcl-xL, cFLIP, XIAP, c-IAP1), caspase activation pathway (caspase-8, 3, 9), tumor suppressor pathway (p53, p21) death receptor pathway (DR4, DR5), mitochondrial pathways, and protein kinase pathway (JNK, Akt, and AMPK). How curcumin selectively kills tumor cells, and not normal cells, is also described in detail.
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Affiliation(s)
- Jayaraj Ravindran
- Cytokine Research Laboratory, Department of Experimental Therapeutics, The University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Boulevard, BOX 143, Houston, TX 77030 USA
| | - Sahdeo Prasad
- Cytokine Research Laboratory, Department of Experimental Therapeutics, The University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Boulevard, BOX 143, Houston, TX 77030 USA
| | - Bharat B. Aggarwal
- Cytokine Research Laboratory, Department of Experimental Therapeutics, The University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Boulevard, BOX 143, Houston, TX 77030 USA
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25
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Abstract
Esophageal cancer is a significant worldwide health problem because of its poor prognosis and high incidence in certain parts of the world. Tobacco smoke and alcohol consumption are significant risk factors for esophageal squamous cell carcinoma, whereas frequent gastroesophageal reflux and subsequent inflammatory reactions play a role in causing the adenocarcinoma. Esophageal carcinogenesis involves multiple genetic alterations. A large body of knowledge has been generated regarding molecular alterations associated with esophageal carcinogenesis. These alterations include aberrant cell cycle control, DNA repair, cellular enzymes, growth factor receptors, and nuclear receptors. This chapter reviews the most frequent gene alterations and their correlation with risk factors as well as the prevention strategies in esophageal cancer.
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Affiliation(s)
- Xiao-chun Xu
- Department of Clinical Cancer Prevention, The University of Texas M. D. Anderson Cancer Center, Houston, TX, USA
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26
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Ashida H, Nishiumi S, Fukuda I. An update on the dietary ligands of the AhR. Expert Opin Drug Metab Toxicol 2008; 4:1429-47. [DOI: 10.1517/17425255.4.11.1429] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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27
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Sa G, Das T. Anti cancer effects of curcumin: cycle of life and death. Cell Div 2008; 3:14. [PMID: 18834508 PMCID: PMC2572158 DOI: 10.1186/1747-1028-3-14] [Citation(s) in RCA: 250] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2008] [Accepted: 10/03/2008] [Indexed: 01/14/2023] Open
Abstract
Increasing knowledge on the cell cycle deregulations in cancers has promoted the introduction of phytochemicals, which can either modulate signaling pathways leading to cell cycle regulation or directly alter cell cycle regulatory molecules, in cancer therapy. Most human malignancies are driven by chromosomal translocations or other genetic alterations that directly affect the function of critical cell cycle proteins such as cyclins as well as tumor suppressors, e.g., p53. In this respect, cell cycle regulation and its modulation by curcumin are gaining widespread attention in recent years. Extensive research has addressed the chemotherapeutic potential of curcumin (diferuloylmethane), a relatively non-toxic plant derived polyphenol. The mechanisms implicated are diverse and appear to involve a combination of cell signaling pathways at multiple levels. In the present review we discuss how alterations in the cell cycle control contribute to the malignant transformation and provide an overview of how curcumin targets cell cycle regulatory molecules to assert anti-proliferative and/or apoptotic effects in cancer cells. The purpose of the current article is to present an appraisal of the current level of knowledge regarding the potential of curcumin as an agent for the chemoprevention of cancer via an understanding of its mechanism of action at the level of cell cycle regulation. Taken together, this review seeks to summarize the unique properties of curcumin that may be exploited for successful clinical cancer prevention.
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Affiliation(s)
- Gaurisankar Sa
- Division of Molecular Medicine, Bose Institute, P-1/12 CIT Scheme VII M, Kolkata, 700054, India.
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28
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Zhang XC, Chen J, Su CH, Yang HY, Lee MH. Roles for CSN5 in control of p53/MDM2 activities. J Cell Biochem 2008; 103:1219-30. [PMID: 17879958 DOI: 10.1002/jcb.21504] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The 5th subunit of COP9 signalosome (CSN5, also known as Jab1 or COPS5) is implicated in regulating p53 activity and is overexpressed in various tumors. However, the precise roles of CSN5 in p53 network and tumorigenesis are not well characterized. Here we show that CSN5 is a critical regulator of both p53 and MDM2. We show that curcumin, an important inhibitor of CSN-associated kinases, can downregulate not only CSN5 but also MDM2, which results in p53 stabilization. Importantly, CSN5 interacts with p53. CSN5 expression leads to p53 degradation, facilitating MDM2-mediated p53 ubiquitination, and promoting p53 nuclear export. Additionally, CSN5 expression results in stabilization of MDM2 through reducing MDM2 self-ubiquitination and decelerating turnover rate of MDM2. Significantly, we further show that CSN5 antagonizes the transcriptional activity of p53. These results demonstrate that CSN5 is a pivotal regulator for both p53 and MDM2. Our studies may pave the way for targeting CSN5 for anti-cancer drug development.
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Affiliation(s)
- Xiao-Chun Zhang
- Department of Molecular and Cellular Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas 77030, USA
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29
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Kim YS, Park HJ, Joo SY, Hong MH, Kim KH, Hong YJ, Kim JH, Park HW, Jeong MH, Cho JG, Park JC, Ahn Y. The Protective Effect of Curcumin on Myocardial Ischemia-Reperfusion Injury. Korean Circ J 2008. [DOI: 10.4070/kcj.2008.38.7.353] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Affiliation(s)
- Yong Sook Kim
- Cardiovascular Research Institute, Chonnam National University Hospital, Gwangju, Korea
| | - Hye Jeong Park
- The Heart Center, Chonnam National University Hospital, Gwangju, Korea
| | - Soo Yeon Joo
- The Heart Center, Chonnam National University Hospital, Gwangju, Korea
| | - Moon Hwa Hong
- Cardiovascular Research Institute, Chonnam National University Hospital, Gwangju, Korea
| | - Kye Hun Kim
- The Heart Center, Chonnam National University Hospital, Gwangju, Korea
| | - Young Joon Hong
- The Heart Center, Chonnam National University Hospital, Gwangju, Korea
| | - Ju Han Kim
- The Heart Center, Chonnam National University Hospital, Gwangju, Korea
| | - Hyung Wook Park
- The Heart Center, Chonnam National University Hospital, Gwangju, Korea
| | - Myung Ho Jeong
- Cardiovascular Research Institute, Chonnam National University Hospital, Gwangju, Korea
- The Heart Center, Chonnam National University Hospital, Gwangju, Korea
- Clinical Trial Center, Chonnam National University Hospital, Gwangju, Korea
| | - Jeong Gwan Cho
- The Heart Center, Chonnam National University Hospital, Gwangju, Korea
| | - Jong Chun Park
- The Heart Center, Chonnam National University Hospital, Gwangju, Korea
| | - Youngkeun Ahn
- Cardiovascular Research Institute, Chonnam National University Hospital, Gwangju, Korea
- The Heart Center, Chonnam National University Hospital, Gwangju, Korea
- Clinical Trial Center, Chonnam National University Hospital, Gwangju, Korea
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30
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Sarkar FH, Li YW. Targeting multiple signal pathways by chemopreventive agents for cancer prevention and therapy. Acta Pharmacol Sin 2007; 28:1305-15. [PMID: 17723164 DOI: 10.1111/j.1745-7254.2007.00689.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
In recent years, growing interest has been focused on the field of cancer prevention. Cancer prevention by chemopreventive agents offers significant promise for reducing the incidence and mortality of cancer. Chemopreventive agents may exert their effects either by blocking or metabolizing carcinogens or by inhibiting tumor cell growth. Another important benefit of chemopreventive agents is their nontoxic nature. Therefore, chemopreventive agents have recently been used for cancer treatment in combination with chemotherapeutics or radiotherapy, uncovering a novel strategy for cancer therapy. This strategy opens a new avenue from cancer prevention to cancer treatment. In vitro and in vivo studies have demonstrated that chemopreventive agents could enhance the antitumor activity of chemotherapeutics, improving the treatment outcome. Growing evidence has shown that chemopreventive agents potentiate the efficacy of chemotherapy and radiotherapy through the regulation of multiple signaling pathways, including Akt, NF-kappaB, c-Myc, cyclooxygenase-2, apoptosis, and others, suggesting a multitargeted nature of chemopreventive agents. However, further in-depth mechanistic studies, in vivo animal experiments, and clinical trials are needed to investigate the effects of chemopreventive agents in combination treatment of cancer with conventional cancer therapies. More potent natural and synthetic chemopreventive agents are also needed to improve the efficacy of mechanism-based and targeted therapeutic strategies against cancer, which are likely to make a significant impact on saving lives. Here, we have briefly reviewed the role of chemopreventive agents in cancer prevention, but most importantly, we have reviewed how they could be useful for cancer therapy in combination with conventional therapies.
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Affiliation(s)
- Fazlul H Sarkar
- Department of Pathology, Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, MI 48201, USA.
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31
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Aggarwal BB, Sundaram C, Malani N, Ichikawa H. CURCUMIN: THE INDIAN SOLID GOLD. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2007; 595:1-75. [PMID: 17569205 DOI: 10.1007/978-0-387-46401-5_1] [Citation(s) in RCA: 842] [Impact Index Per Article: 49.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Turmeric, derived from the plant Curcuma longa, is a gold-colored spice commonly used in the Indian subcontinent, not only for health care but also for the preservation of food and as a yellow dye for textiles. Curcumin, which gives the yellow color to turmeric, was first isolated almost two centuries ago, and its structure as diferuloylmethane was determined in 1910. Since the time of Ayurveda (1900 Bc) numerous therapeutic activities have been assigned to turmeric for a wide variety of diseases and conditions, including those of the skin, pulmonary, and gastrointestinal systems, aches, pains, wounds, sprains, and liver disorders. Extensive research within the last half century has proven that most of these activities, once associated with turmeric, are due to curcumin. Curcumin has been shown to exhibit antioxidant, anti-inflammatory, antiviral, antibacterial, antifungal, and anticancer activities and thus has a potential against various malignant diseases, diabetes, allergies, arthritis, Alzheimer's disease, and other chronic illnesses. These effects are mediated through the regulation of various transcription factors, growth factors, inflammatory cytokines, protein kinases, and other enzymes. Curcumin exhibits activities similar to recently discovered tumor necrosis factor blockers (e.g., HUMIRA, REMICADE, and ENBREL), a vascular endothelial cell growth factor blocker (e.g., AVASTIN), human epidermal growth factor receptor blockers (e.g., ERBITUX, ERLOTINIB, and GEFTINIB), and a HER2 blocker (e.g., HERCEPTIN). Considering the recent scientific bandwagon that multitargeted therapy is better than monotargeted therapy for most diseases, curcumin can be considered an ideal "Spice for Life".
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MESH Headings
- Animals
- Anti-Bacterial Agents/chemistry
- Anti-Bacterial Agents/pharmacology
- Anti-Bacterial Agents/therapeutic use
- Anti-Inflammatory Agents, Non-Steroidal/chemistry
- Anti-Inflammatory Agents, Non-Steroidal/pharmacology
- Anti-Inflammatory Agents, Non-Steroidal/therapeutic use
- Antifungal Agents/chemistry
- Antifungal Agents/pharmacology
- Antifungal Agents/therapeutic use
- Antineoplastic Agents, Phytogenic/chemistry
- Antineoplastic Agents, Phytogenic/pharmacology
- Antineoplastic Agents, Phytogenic/therapeutic use
- Antioxidants/chemistry
- Antioxidants/pharmacology
- Antioxidants/therapeutic use
- Antiviral Agents/chemistry
- Antiviral Agents/pharmacology
- Antiviral Agents/therapeutic use
- Arthritis, Rheumatoid/drug therapy
- Curcuma/chemistry
- Curcumin/analogs & derivatives
- Curcumin/chemistry
- Curcumin/metabolism
- Curcumin/pharmacology
- Curcumin/therapeutic use
- Humans
- India
- Medicine, Ayurvedic
- Models, Biological
- Molecular Structure
- Neoplasms/drug therapy
- Phytotherapy
- Plants, Medicinal
- Spices
- Structure-Activity Relationship
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Affiliation(s)
- Bharat B Aggarwal
- Department of Experimental Therapeutics, The University of Texas M.D. Anderson Cancer Center, Houston, TX 77030, USA.
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32
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Sun X, Zemel MB. 1Alpha,25-dihydroxyvitamin D3 modulation of adipocyte reactive oxygen species production. Obesity (Silver Spring) 2007; 15:1944-53. [PMID: 17712111 DOI: 10.1038/oby.2007.232] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
OBJECTIVE We have previously shown 1alpha,25-dihydroxyvitamin D3 [1alpha,25-(OH)2D3] to inhibit mitochondrial uncoupling protein 2 (UCP2) expression in adipocytes and that in vivo suppression of calcitriol levels with calcium-rich diets increases UCP2 expression. Because UCP2 plays a significant role in the clearance of reactive oxygen species (ROS), we studied the effect of calcitriol on ROS production and ROS-induced adipocyte proliferation. RESEARCH METHODS AND PROCEDURES ROS production in human and murine adipocytes was stimulated by high glucose (30 mM) or H2O2 (100 nM). RESULTS Both approaches resulted in increased ROS production by 27% to 100% (p < 0.05) and increased cell proliferation by 15% to 39% (p < 0.03). These effects were augmented by the addition of mitochondrial uncoupling inhibitor guanosine 5'-diphosphate (GDP; 100 microM) or 1alpha,25-(OH)2D3 (10 nM) and attenuated by UCP2 overexpression, suggesting that inhibition of mitochondrial uncoupling suppresses clearance of ROS and increases adipocyte proliferation. The addition of alpha +/- tocopherol (1 microM) inhibited cell proliferation in adipocytes treated with either H2O2 or high glucose, indicating that ROS plays a major role in the regulation of cell proliferation in adipocytes. Moreover, stimulation of ROS with high glucose and H2O2 resulted in a 2- to 5-fold increase in adipocyte intracellular calcium ([Ca2+]i; p < 0.001), and calcium channel antagonism (nifedipine, 10 microM) suppressed ROS induced calcium influx and cell proliferation, indicating that [Ca2+]i may also regulate ROS production and exert a mitogenic effect in adipocytes. DISCUSSION These data support a role of 1alpha,25-(OH)2D3, UCP2, and [Ca2+]i in the regulation of adipocyte ROS production.
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Affiliation(s)
- Xiaocun Sun
- Department of Nutrition, University of Tennessee, 1215 West Cumberland Avenue, #229, Knoxville, TN 37996-1900, USA
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33
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Kim YS, Ahn Y, Hong MH, Joo SY, Kim KH, Sohn IS, Park HW, Hong YJ, Kim JH, Kim W, Jeong MH, Cho JG, Park JC, Kang JC. Curcumin Attenuates Inflammatory Responses of TNF-α-Stimulated Human Endothelial Cells. J Cardiovasc Pharmacol 2007; 50:41-9. [PMID: 17666914 DOI: 10.1097/fjc.0b013e31805559b9] [Citation(s) in RCA: 110] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Curcumin, a yellow pigment of turmeric in curry, is reported to interfere with nuclear factor (NF)-kappaB. This study was designed to investigate the underlying pathway of antiinflammation of curcumin on endothelial cells. Human umbilical vein endothelial cells (HUVECs) were stimulated with 10 ng/mL tumor necrosis factor (TNF)-alpha. Curcumin blocked the activation of NF-kappaB by TNF-alpha. Curcumin also reduced the intracellular reactive oxygen species (ROS), monocyte adhesion, phosphorylation of c-Jun N-terminal kinase (JNK), p38, and signal transducer and activator of transcription (STAT)-3 in TNF-alpha-stimulated HUVECs. The expression of intracellular cell adhesion molecule (ICAM)-1, monocyte chemoattractant protein (MCP)-1, and interleukin (IL)-8 were attenuated by curcumin at both mRNA and protein level. Curcumin, however, did not affect the expression of TNF receptor I and II in TNF-alpha-stimulated HUVECs. We suggest that curcumin could contribute to protection against the adverse vascular effect of the proinflammatory response through the modulation of p38 and STAT-3 in addition to NF-kappaB and JNK in endothelial cells.
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Affiliation(s)
- Yong Sook Kim
- Heart Center of Chonnam National University Hospital, Gwangju, South Korea
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34
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Basu NK, Kole L, Basu M, McDonagh AF, Owens IS. Targeted inhibition of glucuronidation markedly improves drug efficacy in mice - a model. Biochem Biophys Res Commun 2007; 360:7-13. [PMID: 17586469 PMCID: PMC2034522 DOI: 10.1016/j.bbrc.2007.05.224] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2007] [Accepted: 05/18/2007] [Indexed: 01/28/2023]
Abstract
Finding UDP-glucuronosyltransferases (UGT) require protein kinase C-mediated phosphorylation is important information that allows manipulation of this critical system. UGTs glucuronidate numerous aromatic-like chemicals derived from metabolites, diet, environment and, inadvertently, therapeutics to reduce toxicities. As UGTs are inactivated by downregulating PKCs with reversibly-acting dietary curcumin, we determined the impact of gastro-intestinal glucuronidation on free-drug uptake and efficacy using immunosuppressant, mycophenolic acid (MPA), in mice. Expressed in COS-1 cells, mouse GI-distributed Ugt1a1 glucuronidates curcumin and MPA and undergoes irreversibly and reversibly dephosphorylation by PKC-specific inhibitor calphostin-C and general-kinase inhibitor curcumin, respectively, with parallel effects on activity. Moreover, oral curcumin-administration to mice reversibly inhibited glucuronidation in GI-tissues. Finally, successive oral administration of curcumin and MPA to antigen-treated mice increased serum free MPA and immunosuppression up to 9-fold. Results indicate targeted inhibition of GI glucuronidation in mice markedly improved free-chemical uptake and efficacy using MPA as a model.
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Affiliation(s)
- Nikhil K. Basu
- Corresponding authors at: National Institutes of Health, Building 10, Room 8D-42, Bethesda, MD 20892-1830, E-mail addresses, telephone and fax numbers: ; 301-496-6091, and 301-480-8042; , 301-496-8825, 301-451-4288
| | - Labanyamoy Kole
- Heritable Disorders Branch, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892
| | - Mousumi Basu
- Heritable Disorders Branch, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892
| | - Antony F. McDonagh
- Division of Gastroenterology and the Liver Center, Department of Medicine, University of California at San Francisco, San Francisco, CA 94143
| | - Ida S. Owens
- Corresponding authors at: National Institutes of Health, Building 10, Room 8D-42, Bethesda, MD 20892-1830, E-mail addresses, telephone and fax numbers: ; 301-496-6091, and 301-480-8042; , 301-496-8825, 301-451-4288
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35
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Zhang HG, Kim H, Liu C, Yu S, Wang J, Grizzle WE, Kimberly RP, Barnes S. Curcumin reverses breast tumor exosomes mediated immune suppression of NK cell tumor cytotoxicity. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2007; 1773:1116-23. [PMID: 17555831 PMCID: PMC2577190 DOI: 10.1016/j.bbamcr.2007.04.015] [Citation(s) in RCA: 111] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 02/03/2007] [Revised: 03/23/2007] [Accepted: 04/20/2007] [Indexed: 01/12/2023]
Abstract
An important characteristic of tumors is that they at some point in their development overcome the surveillance of the immune system. Tumors secrete exosomes, multivesicular bodies containing a distinct set of proteins that can fuse with cells of the circulating immune system. Purified exosomes from TS/A breast cancer cells, but not non-exosomal fractions, inhibit (at concentrations of nanograms per ml protein) IL-2-induced natural killer (NK) cell cytotoxicity. The dietary polyphenol, curcumin (diferuloylmethane), partially reverses tumor exosome-mediated inhibition of natural killer cell activation, which is mediated through the impairment of the ubiquitin-proteasome system. Exposure of mouse breast tumor cells to curcumin causes a dose-dependent increase in ubiquitinated exosomal proteins compared to those in untreated TS/A breast tumor cells. Furthermore, exosomes isolated from tumor cells pretreated with curcumin have a much attenuated inhibition of IL-2 stimulated NK cell activation. Jak3-mediated activation of Stat5 is required for tumor cytotoxicity of IL-2 stimulated NK cells. TS/A tumor exosomes strongly inhibit activation of Stat5, whereas the tumor exosomes isolated from curcumin-pretreated tumor cells have a lowered potency for inhibition of IL-2 stimulated NK cell cytotoxicity. These data suggest that partial reversal of tumor exosome-mediated inhibition of NK cell tumor cytotoxicity may account for the anti-cancer properties of curcumin.
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Affiliation(s)
- Huang-Ge Zhang
- Division of Clinical Immunology and Rheumatology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
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36
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Johnson JJ, Mukhtar H. Curcumin for chemoprevention of colon cancer. Cancer Lett 2007; 255:170-81. [PMID: 17448598 DOI: 10.1016/j.canlet.2007.03.005] [Citation(s) in RCA: 257] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2006] [Revised: 03/06/2007] [Accepted: 03/07/2007] [Indexed: 10/23/2022]
Abstract
The most practical approach to reduce the morbidity and mortality of cancer is to delay the process of carcinogenesis through the use of chemopreventive agents. This necessitates that safer compounds, especially those derived from natural sources must be critically examined for chemoprevention. A spice common to India and the surrounding regions, is turmeric, derived from the rhizome of Curcuma longa. Pre-clinical studies in a variety of cancer cell lines including breast, cervical, colon, gastric, hepatic, leukemia, oral epithelial, ovarian, pancreatic, and prostate have consistently shown that curcumin possesses anti-cancer activity in vitro and in pre-clinical animal models. The robust activity of curcumin in colorectal cancer has led to five phase I clinical trials being completed showing the safety and tolerability of curcumin in colorectal cancer patients. To date clinical trials have not identified a maximum tolerated dose of curcumin in humans with clinical trials using doses up to 8000mg per day. The success of these trials has led to the development of phase II trials that are currently enrolling patients. Overwhelming in vitro evidence and completed clinical trials suggests that curcumin may prove to be useful for the chemoprevention of colon cancer in humans. This review will focus on describing the pre-clinical and clinical evidence of curcumin as a chemopreventive compound in colorectal cancer.
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Affiliation(s)
- Jeremy James Johnson
- University of Wisconsin, School of Pharmacy, 777 Highland Avenue, Madison, WI 53705-2222, USA.
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Peschel D, Koerting R, Nass N. Curcumin induces changes in expression of genes involved in cholesterol homeostasis. J Nutr Biochem 2007; 18:113-9. [PMID: 16713233 DOI: 10.1016/j.jnutbio.2006.03.007] [Citation(s) in RCA: 98] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2005] [Revised: 03/15/2006] [Accepted: 03/23/2006] [Indexed: 10/24/2022]
Abstract
Curcuminoids, the yellow pigments of curcuma, exhibit anticarcinogenic, antioxidative and hypocholesterolemic activities. To understand the molecular basis for the hypocholesterolemic effects, we examined the effects of curcumin on hepatic gene expression, using the human hepatoma cell line HepG2 as a model system. Curcumin treatment caused an up to sevenfold, concentration-dependent increase in LDL-receptor mRNA, whereas mRNAs of the genes encoding the sterol biosynthetic enzymes HMG CoA reductase and farnesyl diphosphate synthase were only slightly increased at high curcumin concentrations where cell viability was reduced. Expression of the regulatory SREBP genes was moderately increased, whereas mRNAs of the PPARalpha target genes CD36/fatty acid translocase and fatty acid binding protein 1 were down-regulated. LXRalpha expression and accumulation of mRNA of the LXRalpha target gene ABCg1 were increased at low curcumin concentrations. Although curcumin strongly inhibited alkaline phosphatase activity, an activation of a retinoic acid response element reporter employing secreted alkaline phosphatase was observed. These changes in gene expression are consistent with the proposed hypocholesterolemic effect of curcumin.
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Affiliation(s)
- Dieter Peschel
- BMBF Group Molecular Nutrition Halle, Institute of Nutritional Sciences, Martin-Luther University Halle-Wittenberg, D-06108 Halle, Germany
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38
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Abstract
Polyphenols constitute an important group of phytochemicals that gained increased research attention since it was found that they could affect cancer cell growth. Initial evidence came from epidemiologic studies suggesting that a diet that includes regular consumption of fruits and vegetables (rich in polyphenols) significantly reduces the risk of many cancers. In the present work we briefly review the effects of polyphenols on cancer cell fate, leading towards growth, differentiation and apoptosis. Their action can be attributed not only to their ability to act as antioxidants but also to their ability to interact with basic cellular mechanisms. Such interactions include interference with membrane and intracellular receptors, modulation of signaling cascades, interaction with the basic enzymes involved in tumor promotion and metastasis, interaction with oncogenes and oncoproteins, and, finally, direct or indirect interactions with nucleic acids and nucleoproteins. These actions involve almost the whole spectrum of basic cellular machinery--from the cell membrane to signaling cytoplasmic molecules and to the major nuclear components--and provide insights into their beneficial health effects. In addition, the actions justify the scientific interest in this class of compounds, and provide clues about their possible pharmaceutical exploitation in the field of oncology.
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Affiliation(s)
- M Kampa
- Laboratory of Experimental Endocrinology, University of Crete, School of Medicine, P.O. Box 2208, 71003 Heraklion, Greece
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39
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Blasius R, Dicato M, Diederich M. Effect of Curcumin Treatment on Protein Phosphorylation in K562 Cells. Ann N Y Acad Sci 2007; 1095:377-87. [PMID: 17404050 DOI: 10.1196/annals.1397.041] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Deregulation of signaling pathways is a common feature observed in human cancers and other diseases. Therefore, there is a strong need for compounds that are able to modulate or inactivate upregulated signaling events. Natural compounds extracted from plants have long been used and still present a dynamic domain in the research of new therapeutic tools. Among those molecules, curcumin was already described for its antioxidative, anti-inflammatory, and antiseptic properties. Many actions of curcumin target proteins and kinases implicated in the signaling pathways. However, the effects described depend on the treatment conditions used, as well as the cell line studied, and these features vary strongly from one study to the other. During this work, we evaluated the effect of one curcumin treatment (20 muM, 48 h) on the phosphorylation of a number of proteins and kinases in the human chronic myelogenous leukemia cell line K562. These results allow to compare the results obtained in one condition on various proteins.
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Affiliation(s)
- Romain Blasius
- Laboratoire de Biologie Moléculaire et Cellulaire du Cancer, Hôpital Kirchberg, 9, Rue Edward Steichen, L-2540 Luxembourg, Luxembourg
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Chiang YM, Lo CP, Chen YP, Wang SY, Yang NS, Kuo YH, Shyur LF. Ethyl caffeate suppresses NF-kappaB activation and its downstream inflammatory mediators, iNOS, COX-2, and PGE2 in vitro or in mouse skin. Br J Pharmacol 2006; 146:352-63. [PMID: 16041399 PMCID: PMC1576288 DOI: 10.1038/sj.bjp.0706343] [Citation(s) in RCA: 127] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Ethyl caffeate, a natural phenolic compound, was isolated from Bidens pilosa, a medicinal plant popularly used for treating certain inflammatory syndromes. The purpose of this study was to investigate the structural activity, and the anti-inflammatory functions and mechanism(s) of ethyl caffeate. Ethyl caffeate was found to markedly suppress the lipopolysaccharide (LPS)-induced nitric oxide (NO) production (IC(50) = 5.5 microg ml(-1)), mRNA and protein expressions of inducible nitric oxide synthase (iNOS), and prostaglandin E(2) (PGE(2)) production in RAW 264.7 macrophages. Transient gene expression assays using human cox-2 promoter construct revealed that ethyl caffeate exerted an inhibitory effect on cox-2 transcriptional activity in 12-O-tetradecanoylphorbol-13-acetate (TPA)-treated MCF-7 cells. Immunohistochemical studies of mouse skin demonstrated that TPA-induced COX-2 expression was significantly inhibited by ethyl caffeate with a superior effect to that of celecoxib, a nonsteroidal anti-inflammatory drug. The phosphorylation and degradation of inhibitor kappaB (IkappaB) and the translocation of nuclear transcription factor-kappaB (NF-kappaB) into the nucleus, as well as the activation of mitogen-activated protein kinases (MAPKs) induced by LPS in macrophages, were not affected by ethyl caffeate. Ethyl caffeate, however, could inhibit NF-kappaB activation by impairing the binding of NF-kappaB to its cis-acting element. These results suggest that ethyl caffeate suppresses iNOS and COX-2 expressions partly through the inhibition of the NF-kappaB.DNA complex formation. Structure-activity relationship analyses suggested that the catechol moiety and alpha,beta-unsaturated ester group in ethyl caffeate are important and essential structural features for preventing NF-kappaB.DNA complex formation. This study provides an insight into the probable mechanism(s) underlying the anti-inflammatory and therapeutic properties of ethyl caffeate.
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Affiliation(s)
- Yi-Ming Chiang
- Institute of BioAgricultural Sciences, Academia Sinica, Taipei, Taiwan, ROC
| | - Chiu-Ping Lo
- Institute of BioAgricultural Sciences, Academia Sinica, Taipei, Taiwan, ROC
| | - Yi-Ping Chen
- Institute of BioAgricultural Sciences, Academia Sinica, Taipei, Taiwan, ROC
| | - Sheng-Yang Wang
- Department of Forestry, National Chung-Hsing University, Taichung, Taiwan, ROC
| | - Ning-Sun Yang
- Institute of BioAgricultural Sciences, Academia Sinica, Taipei, Taiwan, ROC
| | - Yueh-Hsiung Kuo
- Department of Chemistry, National Taiwan University, Taipei, Taiwan, ROC
| | - Lie-Fen Shyur
- Institute of BioAgricultural Sciences, Academia Sinica, Taipei, Taiwan, ROC
- Author for correspondence:
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41
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Bernt C, Vennegeerts T, Beuers U, Rust C. The human transcription factor AP-1 is a mediator of bile acid-induced liver cell apoptosis. Biochem Biophys Res Commun 2006; 340:800-6. [PMID: 16380075 DOI: 10.1016/j.bbrc.2005.12.081] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2005] [Accepted: 12/14/2005] [Indexed: 10/25/2022]
Abstract
Apoptosis induced by toxic bile acids is thought to contribute to liver injury during cholestasis. The transcription factor AP-1 is involved in the induction of apoptosis depending on stimulus and cell type. It is not known whether the major human toxic bile acid, glycochenodeoxycholic acid (GCDCA), modulates AP-1 in hepatocytes. Our data show that GCDCA (75 microM, 4 h) significantly upregulates cFos and JunB as demonstrated by microarray analysis and real-time PCR in HepG2-Ntcp hepatoma cells. GCDCA (75 microM, 4 h) also induced AP-1 activation as determined by EMSA that was most distinct after 30 min. In parallel, AP-1 transcriptional activity increased by 40% after exposure to GCDCA. Curcumin, an AP-1 inhibitor, dose-dependently reduced (1-25 microM) or completely abolished (50 microM) the apoptotic effect of GCDCA. Thus, GCDCA-induced upregulation of AP-1-dependent genes appears important for the cytotoxicity of this bile acid.
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Affiliation(s)
- Carina Bernt
- Department of Medicine II-Grosshadern, University of Munich, Munich, Germany
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42
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N/A, 李 强. N/A. Shijie Huaren Xiaohua Zazhi 2005; 13:2021-2025. [DOI: 10.11569/wcjd.v13.i16.2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/26/2023] Open
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43
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Cho YH, Kim YJ, Park JW, Ahn KS, Kim IH, Bae EK, Park SY, Kim BK, Yoon SS. Apoptosis Induction by Curcumin in Human Myelogenous Leukemia Cell Lines. THE KOREAN JOURNAL OF HEMATOLOGY 2005. [DOI: 10.5045/kjh.2005.40.2.75] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Yo-Han Cho
- Department of Internal Medicine, Konkuk University College of Medicine, Seoul, Korea
| | - Young-Ju Kim
- Cancer Research Institute, Seoul National University Hospital, Seoul, Korea
| | - Ju Won Park
- Cancer Research Institute, Seoul National University Hospital, Seoul, Korea
| | - Kwang-Sung Ahn
- Cancer Research Institute, Seoul National University Hospital, Seoul, Korea
| | - In ho Kim
- Cancer Research Institute, Seoul National University Hospital, Seoul, Korea
- Clinical Research Institute, Seoul National University Hospital, Seoul, Korea
- Department of Internal Medicine, College of Medicine, Seoul National University, Seoul, Korea
| | - Eun Kyung Bae
- Cancer Research Center, Samsung Biomedical Research Institute, Seoul, Korea
| | - Seon yang Park
- Cancer Research Institute, Seoul National University Hospital, Seoul, Korea
- Clinical Research Institute, Seoul National University Hospital, Seoul, Korea
- Department of Internal Medicine, College of Medicine, Seoul National University, Seoul, Korea
| | - Byoung Kook Kim
- Cancer Research Institute, Seoul National University Hospital, Seoul, Korea
- Clinical Research Institute, Seoul National University Hospital, Seoul, Korea
- Department of Internal Medicine, College of Medicine, Seoul National University, Seoul, Korea
| | - Sung-Soo Yoon
- Cancer Research Institute, Seoul National University Hospital, Seoul, Korea
- Clinical Research Institute, Seoul National University Hospital, Seoul, Korea
- Department of Internal Medicine, College of Medicine, Seoul National University, Seoul, Korea
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