1
|
Williamson G, Clifford MN. A critical examination of human data for the biological activity of quercetin and its phase-2 conjugates. Crit Rev Food Sci Nutr 2024:1-37. [PMID: 38189312 DOI: 10.1080/10408398.2023.2299329] [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: 01/09/2024]
Abstract
This critical review examines evidence for beneficial effects of quercetin phase-2 conjugates from clinical intervention studies, volunteer feeding trials, and in vitro work. Plasma concentrations of quercetin-3-O-glucuronide (Q3G) and 3'-methylquercetin-3-O-glucuronide (3'MQ3G) after supplementation may produce beneficial effects in macrophages and endothelial cells, respectively, especially if endogenous deglucuronidation occurs, and lower blood uric acid concentration via quercetin-3'-O-sulfate (Q3'S). Unsupplemented diets produce much lower concentrations (<50 nmol/l) rarely investigated in vitro. At 10 nmol/l, Q3'S and Q3G stimulate or suppress, respectively, angiogenesis in endothelial cells. Statistically significant effects have been reported at 100 nmol/l in breast cancer cells (Q3G), primary neuron cultures (Q3G), lymphocytes (Q3G and3'MQ3G) and HUVECs (QG/QS mixture), but it is unclear whether these translate to a health benefit in vivo. More sensitive and more precise methods to measure clinically significant endpoints are required before a conclusion can be drawn regarding effects at normal dietary concentrations. Future requirements include better understanding of inter-individual and temporal variation in plasma quercetin phase-2 conjugates, their mechanisms of action including deglucuronidation and desulfation both in vitro and in vivo, tissue accumulation and washout, as well as potential for synergy or antagonism with other quercetin metabolites and metabolites of other dietary phytochemicals.
Collapse
Affiliation(s)
- Gary Williamson
- Department of Nutrition, Dietetics and Food, Faculty of Medicine Nursing and Health Sciences, Monash University, Notting Hill, VIC, Australia
| | - Michael N Clifford
- Department of Nutrition, Dietetics and Food, Faculty of Medicine Nursing and Health Sciences, Monash University, Notting Hill, VIC, Australia
- School of Bioscience and Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey, UK
| |
Collapse
|
2
|
Liu X, Zhao T, Shi Z, Hu C, Li Q, Sun C. Synergism Antiproliferative Effects of Apigenin and Naringenin in NSCLC Cells. Molecules 2023; 28:4947. [PMID: 37446609 DOI: 10.3390/molecules28134947] [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: 05/30/2023] [Revised: 06/15/2023] [Accepted: 06/20/2023] [Indexed: 07/15/2023] Open
Abstract
Non-small cell lung cancer (NSCLC) is one of the leading cancer killers. Apigenin (Api) and Naringenin (Nar) are natural bioactive substances obtained in various vegetables and fruits, possessing anti-tumor effects across multiple studies. This study investigated the latent synergistic antiproliferative functions of Api and Nar in A549 and H1299 NSCLC cells. Cell viability was determined after incubating with different concentrations of Api, Nar, or the combination of Api and Nar (CoAN) for 24 h. Analysis using the CompuSyn software revealed that the CI value of each combined dose was < 1, depicting that the two drugs had a synergistic inhibitory effect. The CoAN (A:N = 3:2) group with the lowest CI value was selected for subsequent experiments. The IC50 of CoAN (A:N = 3:2) was used to determine the cell cycle, the expression ratio of Bax to Bcl2, Caspase 3 activity, and mitochondrial function to assess oxidative stress and apoptosis. The results established that CoAN treatment caused significant cytotoxicity with cell cycle arrest at G2/M phases. Furthermore, CoAN significantly enhanced mitochondria dysfunction, elevated oxidative stress, and activated the apoptotic pathway versus Api or Nar alone groups. Thus, the CoAN chemotherapy approach is promising and deserves further research.
Collapse
Affiliation(s)
- Xiongxiong Liu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Key Laboratory of Heavy Ion Radiation Biology and Medicine, Chinese Academy of Sciences, Lanzhou 730000, China
- Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Gansu Province, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ting Zhao
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Key Laboratory of Heavy Ion Radiation Biology and Medicine, Chinese Academy of Sciences, Lanzhou 730000, China
- Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Gansu Province, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zheng Shi
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Key Laboratory of Heavy Ion Radiation Biology and Medicine, Chinese Academy of Sciences, Lanzhou 730000, China
- Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Gansu Province, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Cuilan Hu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Key Laboratory of Heavy Ion Radiation Biology and Medicine, Chinese Academy of Sciences, Lanzhou 730000, China
- Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Gansu Province, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qiang Li
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Key Laboratory of Heavy Ion Radiation Biology and Medicine, Chinese Academy of Sciences, Lanzhou 730000, China
- Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Gansu Province, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chao Sun
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Key Laboratory of Heavy Ion Radiation Biology and Medicine, Chinese Academy of Sciences, Lanzhou 730000, China
- Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Gansu Province, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| |
Collapse
|
3
|
Beyond Antioxidant Activity: Redox Properties of Catechins May Affect Changes in the DNA Methylation Profile—The Example of SRXN1 Gene. Antioxidants (Basel) 2023; 12:antiox12030754. [PMID: 36979004 PMCID: PMC10045509 DOI: 10.3390/antiox12030754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/13/2023] [Accepted: 03/15/2023] [Indexed: 03/22/2023] Open
Abstract
The role of catechins in the epigenetic regulation of gene expression has been widely studied; however, if and how this phenomenon relates to the redox properties of these polyphenols remains unknown. Our earlier study demonstrated that exposure of the human colon adenocarcinoma HT29 cell line to these antioxidants affects the expression of redox-related genes. In particular, treatment with (−)-epigallocatechin (EGC) downregulated transcription of gene encoding sulfiredoxin-1 (SRXN1), the peroxidase involved in the protection of cells against hydrogen peroxide-induced oxidative stress. The aim of this study was to investigate whether the observed SRXN1 downregulation was accompanied by changes in the DNA methylation level of its promoter and, if so, whether it was correlated with the redox properties of catechins. The impact on DNA methylation profile in HT29 cells treated with different concentrations of five catechins, varying in chemical structures and standard reduction potentials as well as susceptibility to oxidation, was monitored by a methylation-sensitive high-resolution melting technique employing the SRXN1 promoter region as a model target. We demonstrated that catechins, indeed, are able to modulate DNA methylation of the SRXN1 gene in a redox-related manner. The nonlinear method in the statistical analysis made it possible to fish out two parameters (charge transfer in oxidation process Qox and time of electron transfer t), whose strong interactions correlated with observed modulation of DNA methylation by catechins. Based on these findings, we present a proof-of-concept that DNA methylation, which limits SRXN1 expression and thus restricts the multidirectional antioxidant action of SRXN1, may represent a mechanism protecting cells against reductive stress caused by particularly fast-reacting reductants such as EGC and (−)-epicatechin gallate (ECG) in our study.
Collapse
|
4
|
Abstract
Flavonoids are polyphenolic phytochemicals, which occur naturally in plants and possess both anti-oxidant and pro-oxidant properties. Flavonoids are gaining increasing popularity in the pharmaceutical industry as healthy and cost-effective compounds. Flavonoids show beneficial pharmacological activities in the treatment and prevention of various types of diseases. They are natural and less toxic agents for cancer chemotherapy and radiotherapy via regulation of multiple cell signaling pathways and pro-oxidant effects. In this review, we have summarized the mechanisms of action of selected flavonoids, and their pharmacological implications and potential therapeutic applications in cancer therapy.
Collapse
Affiliation(s)
- Prabha Tiwari
- Riken Center for Integrative Medical Sciences, Yokohama, Kanagawa, Japan
| | - Kaushala Prasad Mishra
- Ex Bhabha Atomic Research Center, Foundation for Education and Research, Mumbai, Maharashtra, India
| |
Collapse
|
5
|
Lazuardi M, Suharjono S, Chien CH, He JL, Lee CW, Peng CK, Sukmanadi M, Sugihartuti R, Maslachah L. Toxicity test of flavonoid compounds from the leaves of Dendrophthoe pentandra (L.) Miq. using in vitro culture cell models. Vet World 2022; 15:2896-2902. [PMID: 36718322 PMCID: PMC9880835 DOI: 10.14202/vetworld.2022.2896-2902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 11/09/2022] [Indexed: 12/24/2022] Open
Abstract
Background and Aim The flavonoids from mistletoe are thought to have antimicrobial action. This encouraging finding supports the benefits of medicinal plants as a substitute for synthetic antimicrobials, thus promoting healthy lifestyles. In contrast, it is known that the use of topical drug formulations made from flavonoids of mistletoe (Dendrophthoe pentandra (L.) Miq. Loranthaceae) with Indonesian name, Benalu duku (BD) is required in skin cell irritation. This study aimed to assess the toxic effects of the flavonoid substances of BD, as an initial screening. Materials and Methods A myeloma cell line was cultured in Roswell Park Memorial Institute medium, and the Baby Hamster Kidney clone 12 (BHK21) cell line was cultured in Dulbecco's Modified Eagle's Medium from stock (±9 × 107 cells/mL), and 1.2 mL of culture were distributed into each well of a microtiter plate. Subsequently, 0.2 mL of serially diluted flavonoid compounds (0.5-3 μg/mL) were added to 12 wells for each concentration, as trial groups (including control groups), followed by a 2-day incubation. Observations were performed based on the cytopathic effect (CPE) using an inverted microscope at a magnification of 100×. Results Cytopathic effect was detected on the microtiter plate wells for the groups of myeloma and BHK21 cells at a flavonoid concentration of 0.5 μg/mL-3 μg/mL. Conclusion Flavonoid compounds from BD were safely used for topical treatment of cancer cells at a concentration <2.491 μg/mL, whereas for non-cancerous cells, a concentration <2.582 μg/mL was sufficient (p < 0.05).
Collapse
Affiliation(s)
- Mochamad Lazuardi
- Sub-division Veterinary-Pharmacy, Faculty of Veterinary Medicine, Universitas Airlangga, Mulyorejo Road, 60115, Surabaya, Indonesia,Corresponding author: Mochamad Lazuardi, e-mail: Co-authors: SS: , CC: , JH: , CL: , CP: , MS: , RS: , LM:
| | - Suharjono Suharjono
- Department of Pharmaceutics, Faculty of Pharmacy, Universitas Airlangga, Mulyorejo Road, 60115, Surabaya, Indonesia
| | - Chi-Hsien Chien
- Department of Veterinary Medicine, Asia University, No. 500, Lioufeng Road, Wufeng District, Taichung 41354, Taiwan
| | - Jie-Long He
- Department of Veterinary Medicine, Asia University, No. 500, Lioufeng Road, Wufeng District, Taichung 41354, Taiwan
| | - Chi-Wen Lee
- Department of Veterinary Medicine, Asia University, No. 500, Lioufeng Road, Wufeng District, Taichung 41354, Taiwan
| | - Chia-Kang Peng
- Department of Veterinary Medicine, Asia University, No. 500, Lioufeng Road, Wufeng District, Taichung 41354, Taiwan
| | - Mohammad Sukmanadi
- Sub-division Veterinary-Pharmacy, Faculty of Veterinary Medicine, Universitas Airlangga, Mulyorejo Road, 60115, Surabaya, Indonesia
| | - Rahmi Sugihartuti
- Sub-division Veterinary-Pharmacy, Faculty of Veterinary Medicine, Universitas Airlangga, Mulyorejo Road, 60115, Surabaya, Indonesia
| | - Lilik Maslachah
- Sub-division Veterinary-Pharmacy, Faculty of Veterinary Medicine, Universitas Airlangga, Mulyorejo Road, 60115, Surabaya, Indonesia
| |
Collapse
|
6
|
Hunyadi A, Agbadua OG, Takács G, Balogh GT. Scavengome of an antioxidant. VITAMINS AND HORMONES 2022; 121:81-108. [PMID: 36707145 DOI: 10.1016/bs.vh.2022.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The term "scavengome" refers to the chemical space of all the metabolites that may be formed from an antioxidant upon scavenging reactive oxygen or nitrogen species (ROS/RNS). This chemical space covers a wide variety of free radical metabolites with drug discovery potential. It is very rich in structures representing an increased chemical complexity as compared to the parent antioxidant: a wide range of unusual heterocyclic structures, new CC bonds, etc. may be formed. Further, in a biological environment, this increased chemical complexity is directly translated from the localized conditions of oxidative stress that determines the amounts and types of ROS/RNS present. Biomimetic oxidative chemistry provides an excellent tool to model chemical reactions between antioxidants and ROS/RNS. In this chapter, we provide an overview on the known metabolites obtained by biomimetic oxidation of a few selected natural antioxidants, i.e., a stilbene (resveratrol), a pair of hydroxycinnamates (caffeic acid and methyl caffeate), and a flavonol (quercetin), and discuss the drug discovery perspectives of the related chemical space.
Collapse
Affiliation(s)
- Attila Hunyadi
- Institute of Pharmacognosy, Interdisciplinary Excellence Centre, University of Szeged, Szeged, Hungary; Interdisciplinary Centre for Natural Products, University of Szeged, Szeged, Hungary.
| | - Orinhamhe G Agbadua
- Institute of Pharmacognosy, Interdisciplinary Excellence Centre, University of Szeged, Szeged, Hungary
| | - Gábor Takács
- Department of Chemical and Environmental Process Engineering, Budapest University of Technology and Economics, Budapest, Hungary; Mcule.com Ltd., Budapest, Hungary
| | - Gyorgy T Balogh
- Department of Chemical and Environmental Process Engineering, Budapest University of Technology and Economics, Budapest, Hungary; Department of Pharmacodynamics and Biopharmacy, University of Szeged, Szeged, Hungary
| |
Collapse
|
7
|
Tentative Identification of Phytochemicals from Smilax glabra and Smilax corbularia Extracts by LC-QTOF/MS and Their Bioactive Potential. PLANTS 2022; 11:plants11162089. [PMID: 36015393 PMCID: PMC9415527 DOI: 10.3390/plants11162089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 08/02/2022] [Accepted: 08/07/2022] [Indexed: 11/17/2022]
Abstract
The Smilacaceae family has been used as a food source and herbal medicine for a long time. This study aims to identify the phytochemicals extracted from Smilax glabra and Smilax corbularia by using LC-QTOF/MS analysis and determine their bioactive potential. Compounds were identified from S. glabra and S. corbularia extracts by LC–QTOF-MS and it was found that longistylin A and CAY10435 have higher degrees of matching compounds (99.66% and 99.87%). Smilax glabra showed antioxidant capacity, i.e., DPPH and ABTS at percentage inhibitions of 71.94 ± 1.46% and 59.84 ± 4.80%, respectively, and FRAP at 730.69 ± 33.62 mg AAE/100 g sample. The total phenolic compound contents of the ethanol, methanol, and water extracts were 0.017 ± 0.001, 0.015 ± 0.001, and 0.016 ± 0.001 mg GAE/g, respectively, while the total flavonoid contents were 0.043 ± 0.002, 0.033 ± 0.002, and 0.006 ± 0.003 mg QE/g, respectively. The anti-inflammatory capacity showed 97.26% protection and 2.74% hemolysis. The antimicrobial activity can inhibit Gram-positive bacteria with a minimum inhibitory concentration (MIC) of 62.5 mg/mL and a minimum bactericidal concentration (MBC) of 500 mg/mL. Smilax corbularia showed antioxidant capacity, i.e., DPPH and ABTS at percentage inhibitions of 72.24 ± 0.64% and 39.87 ± 2.37%, respectively, and FRAP at 208.33 ± 50.80 mg AAE/100 g sample. The total phenolic compound contents of the ethanol, methanol, and water extracts were 0.006 ± 0.000, 0.007 ± 0.002, and 0.002 ± 0.001 mg GAE/g, respectively, while the total flavonoid contents of the ethanol and methanol extracts were 0.012 ± 0.001 and 0.008 ± 0.000 mg QE/g, respectively. The anti-inflammatory capacity showed 96.64% protection and 3.36% hemolysis. The antimicrobial activity of the extracts can inhibit Gram-positive bacteria with a MIC of 31.25 mg/mL and MBC of 125 mg/mL for the ethanol extract and a MIC of 125 mg/mL and MBC of 62.5 mg/mL for the methanol extract. In conclusion, Smilax glabra and Smilax corbularia were found to contain several phytochemicals that can be used for further study. Both Smilax species can also be used as sources of antioxidants and herbal medicines for killing Gram-positive bacteria.
Collapse
|
8
|
Regulation of DAPK1 by Natural Products: An Important Target in Treatment of Stroke. Neurochem Res 2022; 47:2142-2157. [PMID: 35674928 DOI: 10.1007/s11064-022-03628-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 05/01/2022] [Accepted: 05/05/2022] [Indexed: 12/12/2022]
Abstract
Stroke is a sudden neurological disorder that occurs due to impaired blood flow to an area of the brain. Stroke can be caused by the blockage or rupture of a blood vessel in the brain, called ischemic stroke and hemorrhagic stroke, respectively. Stroke is more common in men than women. Atrial fibrillation, hypertension, kidney disease, high cholesterol and lipids, genetic predisposition, inactivity, poor nutrition, diabetes mellitus, family history and smoking are factors that increase the risk of stroke. Restoring blood flow by repositioning blocked arteries using thrombolytic agents or endovascular therapy are the most effective treatments for stroke. However, restoring circulation after thrombolysis can cause fatal edema or intracranial hemorrhage, and worsen brain damage in a process known as ischemia-reperfusion injury. Therefore, there is a pressing need to find and develop more effective treatments for stroke. In the past, the first choice of treatment was based on natural compounds. Natural compounds are able to reduce the symptoms and reduce various diseases including stroke that attract the attention of the pharmaceutical industry. Nowadays, as a result of the numerous studies carried out in the field of herbal medicine, many useful and valuable effects of plants have been identified. The death-associated protein kinase (DAPK) family is one of the vital families of serine/threonine kinases involved in the regulation of some biological functions in human cells. DAPK1 is the most studied kinase within the DAPKs family as it is involved in neuronal and recovery processes. Dysregulation of DAPK1 in the brain is involved in the developing neurological diseases such as stroke. Natural products can function in a variety of ways, including reducing cerebral edema, reducing brain endothelial cell death, and inhibiting TNFα and interleukin-1β (IL-1β) through regulating the DAPK1 signal against stroke. Due to the role of DAPK1 in neurological disorders, the aim of this article was to investigate the role of DAPK1 in stroke and its modulation by natural compounds.
Collapse
|
9
|
Sarkar C, Chaudhary P, Jamaddar S, Janmeda P, Mondal M, Mubarak MS, Islam MT. Redox Activity of Flavonoids: Impact on Human Health, Therapeutics, and Chemical Safety. Chem Res Toxicol 2022; 35:140-162. [PMID: 35045245 DOI: 10.1021/acs.chemrestox.1c00348] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The cost-effectiveness of presently used therapies is a problem in overall redox-based management, which is posing a significant financial burden on communities across the world. As a result, sophisticated treatment models that provide notions of predictive diagnoses followed by targeted preventive therapies adapted to individual patient profiles are gaining global acclaim as being beneficial to patients, the healthcare sector, and society as a whole. In this context, natural flavonoids were considered due to their multifaceted antioxidant, anti-inflammatory, and anticancer effects as well as their low toxicity and ease of availability. The aim of this review is to focus on the capacity of flavonoids to modulate the responsiveness of various diseases and ailments associated with redox toxicity. The review will also focus on the flavonoids' pathway-based redox activity and the advancement of redox-based therapies as well as flavonoids' antioxidant characteristics and their influence on human health, therapeutics, and chemical safety. Research findings indicated that flavonoids significantly exhibit various redox-based therapeutic responses against several diseases such as inflammatory, neurodegenerative, cardiovascular, and hepatic diseases and various types of cancer by activating the Nrf2/Keap1 transcription system, suppressing the nuclear factor κB (NF-κB)/IκB kinase inflammatory pathway, abrogating the function of the Hsp90/Hsf1 complex, inhibiting the PTEN/PI3K/Akt pathway, and preventing mitochondrial dysfunction. Some flavonoids, especially genistein, apigenin, amentoflavone, baicalein, quercetin, licochalcone A, and biochanin A, play a potential role in redox regulation. Conclusions of this review on the antioxidant aspects of flavonoids highlight the medicinal and folk values of these compounds against oxidative stress and various diseases and ailments. In short, treatment with flavonoids could be a novel therapeutic invention in clinical trials, as we hope.
Collapse
Affiliation(s)
- Chandan Sarkar
- Department of Pharmacy, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalganj 8100, Bangladesh
| | - Priya Chaudhary
- Department of Bioscience and Biotechnology, Banasthali Vidyapith, Rajasthan 304022, India
| | - Sarmin Jamaddar
- Department of Pharmacy, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalganj 8100, Bangladesh
| | - Pracheta Janmeda
- Department of Bioscience and Biotechnology, Banasthali Vidyapith, Rajasthan 304022, India
| | - Milon Mondal
- Department of Pharmacy, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalganj 8100, Bangladesh
| | | | - Muhammad Torequl Islam
- Department of Pharmacy, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalganj 8100, Bangladesh
| |
Collapse
|
10
|
Oyenihi OR, Oyenihi AB, Alabi TD, Tade OG, Adeyanju AA, Oguntibeju OO. Reactive oxygen species: Key players in the anticancer effects of apigenin? J Food Biochem 2022; 46:e14060. [PMID: 34997605 DOI: 10.1111/jfbc.14060] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 12/07/2021] [Accepted: 12/10/2021] [Indexed: 01/04/2023]
Abstract
Reactive oxygen species (ROS) exhibit a double-edged sword in cancer-hence their modulation has been an attractive strategy in cancer prevention and therapy. The abundance of scientific information on the pro-oxidant effects of apigenin in cancer cells suggests the crucial role of ROS in its mechanisms of action. Although apigenin is known to enhance the cellular ROS levels to cytotoxic degrees in cancer cells in vitro, it remains to be determined if these pro-oxidant effects prevail or are relevant in experimental tumor models and clinical trials. Here, we critically examine the pro-oxidant and antioxidant effects of apigenin in cancer to provide insightful perspectives on the association between its ROS-modulating action and anticancer potential. We also discussed these effects in a cell/tissue type-specific context to highlight the factors influencing the switch between antioxidant and pro-oxidant effects. Finally, we raised some questions that need addressing for the potential translation of these studies into clinical applications. Further research into this duality in oxidant actions of apigenin, especially in vivo, may enable better exploitation of its anticancer potential. PRACTICAL APPLICATION: Apigenin is a naturally occurring compound found in chamomile flowers, parsley, celery, peppermint, and citrus fruits. Many human trials of dietary interventions with apigenin-containing herbs and flavonoid mixture on oxidative stress markers, for instance, point to their antioxidant effects and health benefits in many diseases. Preclinical studies suggest that apigenin alone or its combination with chemotherapeutics has a strong anti-neoplastic effect and can induce ROS-mediated cytotoxicity at concentrations in the micromolar (μM) range, which may not be feasible with dietary interventions. Enhancing the in vivo pharmacokinetic properties of apigenin may be indispensable for its potential cancer-specific pro-oxidant therapy and may provide relevant information for clinical studies of apigenin either as a single agent or an adjuvant to chemotherapeutics.
Collapse
Affiliation(s)
- Omolola R Oyenihi
- Phytomedicine and Phytochemistry Group, Department of Biomedical Sciences, Faculty of Health and Wellness Sciences, Cape Peninsula University of Technology, Bellville, South Africa
| | - Ayodeji B Oyenihi
- Functional Foods Research Unit, Faculty of Applied Sciences, Cape Peninsula University of Technology, Bellville, South Africa
| | - Toyin D Alabi
- Phytomedicine and Phytochemistry Group, Department of Biomedical Sciences, Faculty of Health and Wellness Sciences, Cape Peninsula University of Technology, Bellville, South Africa
| | - Oluwatosin G Tade
- School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Anne A Adeyanju
- Department of Biological Sciences, Faculty of Applied Sciences, KolaDaisi University, Ibadan, Oyo State, Nigeria
| | - Oluwafemi O Oguntibeju
- Phytomedicine and Phytochemistry Group, Department of Biomedical Sciences, Faculty of Health and Wellness Sciences, Cape Peninsula University of Technology, Bellville, South Africa
| |
Collapse
|
11
|
Han T, Cheng T, Liao Y, He Y, Liu B, Lai Q, Pan P, Liu J, Lei C, Cao Y. Development and Validation of a Novel Prognostic Score Based on Thrombotic and Inflammatory Biomarkers for Predicting 28-Day Adverse Outcomes in Patients with Acute Pancreatitis. J Inflamm Res 2022; 15:395-408. [PMID: 35068938 PMCID: PMC8769056 DOI: 10.2147/jir.s344446] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 01/11/2022] [Indexed: 02/06/2023] Open
Affiliation(s)
- Tianyong Han
- Emergency Department, West China Hospital of Sichuan University, Chengdu, Sichuan, People’s Republic of China
| | - Tao Cheng
- Emergency Department, West China Hospital of Sichuan University, Chengdu, Sichuan, People’s Republic of China
| | - Ye Liao
- Medical Intensive Care Unit, West China Hospital of Sichuan University, Chengdu, Sichuan, People’s Republic of China
| | - Yarong He
- Emergency Department, West China Hospital of Sichuan University, Chengdu, Sichuan, People’s Republic of China
| | - Bofu Liu
- Emergency Department, West China Hospital of Sichuan University, Chengdu, Sichuan, People’s Republic of China
| | - Qiang Lai
- Emergency Department, West China Hospital of Sichuan University, Chengdu, Sichuan, People’s Republic of China
| | - Pan Pan
- Emergency Department, West China Hospital of Sichuan University, Chengdu, Sichuan, People’s Republic of China
| | - Junzhao Liu
- Emergency Department, West China Hospital of Sichuan University, Chengdu, Sichuan, People’s Republic of China
| | - Chenxi Lei
- Emergency Department, West China Hospital of Sichuan University, Chengdu, Sichuan, People’s Republic of China
| | - Yu Cao
- Emergency Department, West China Hospital of Sichuan University, Chengdu, Sichuan, People’s Republic of China
- Correspondence: Yu Cao, Emergency Department, West China Hospital of Sichuan University, 37 Guoxue Lane, Wuhou District, Chengdu, 610041, Sichuan, People’s Republic of China, Tel +86 28-85422288, Email
| |
Collapse
|
12
|
Han L, Fu Q, Deng C, Luo L, Xiang T, Zhao H. Immunomodulatory potential of flavonoids for the treatment of autoimmune diseases and tumour. Scand J Immunol 2021. [DOI: 10.1111/sji.13106] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Limin Han
- Department of Pathophysiology Zunyi Medical University Zunyi China
- Department of Endocrinology People’s Hospital of Changshou Chongqing Chongqing China
| | - Qiang Fu
- Organ Transplantation Center Sichuan Academy of Medical Sciences and Sichuan Provincial People’s Hospital School of Medicine University of Electronic Science and Technology of China Chengdu China
| | - Chuan Deng
- Department of Neurology People’s Hospital of Changshou Chongqing Chongqing China
| | - Li Luo
- Department of Forensic Medicine Zunyi Medical University Zunyi China
| | - Tengxiao Xiang
- Department of Endocrinology People’s Hospital of Changshou Chongqing Chongqing China
| | - Hailong Zhao
- Department of Pathophysiology Zunyi Medical University Zunyi China
| |
Collapse
|
13
|
Jha V, Kumari T, Manickam V, Assar Z, Olson KL, Min JK, Cho J. ERO1-PDI Redox Signaling in Health and Disease. Antioxid Redox Signal 2021; 35:1093-1115. [PMID: 34074138 PMCID: PMC8817699 DOI: 10.1089/ars.2021.0018] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Significance: Protein disulfide isomerase (PDI) and endoplasmic reticulum oxidoreductase 1 (ERO1) are crucial for oxidative protein folding in the endoplasmic reticulum (ER). These enzymes are frequently overexpressed and secreted, and they contribute to the pathology of neurodegenerative, cardiovascular, and metabolic diseases. Recent Advances: Tissue-specific knockout mouse models and pharmacologic inhibitors have been developed to advance our understanding of the cell-specific functions of PDI and ERO1. In addition to their roles in protecting cells from the unfolded protein response and oxidative stress, recent studies have revealed that PDI and ERO1 also function outside of the cells. Critical Issues: Despite the well-known contributions of PDI and ERO1 to specific disease pathology, the detailed molecular and cellular mechanisms underlying these activities remain to be elucidated. Further, although PDI and ERO1 inhibitors have been identified, the results from previous studies require careful evaluation, as many of these agents are not selective and may have significant cytotoxicity. Future Directions: The functions of PDI and ERO1 in the ER have been extensively studied. Additional studies will be required to define their functions outside the ER.
Collapse
Affiliation(s)
- Vishwanath Jha
- Division of Hematology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Tripti Kumari
- Division of Hematology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Vijayprakash Manickam
- Division of Hematology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Zahra Assar
- Cayman Chemical Company, Inc., Ann Arbor, Michigan, USA
| | - Kirk L Olson
- Cayman Chemical Company, Inc., Ann Arbor, Michigan, USA
| | - Jeong-Ki Min
- Biotherapeutics Translational Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea.,Department of Biomolecular Science, KRIBB School of Bioscience, Korea University of Science and Technology, Daejeon, Republic of Korea
| | - Jaehyung Cho
- Division of Hematology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA.,Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri, USA
| |
Collapse
|
14
|
Ngoi NY, Liew AQ, Chong SJF, Davids MS, Clement MV, Pervaiz S. The redox-senescence axis and its therapeutic targeting. Redox Biol 2021; 45:102032. [PMID: 34147844 PMCID: PMC8220395 DOI: 10.1016/j.redox.2021.102032] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 05/26/2021] [Accepted: 05/28/2021] [Indexed: 12/14/2022] Open
Abstract
Significance Cellular growth arrest, associated with ‘senescence’, helps to safeguard against the accumulation of DNA damage which is often recognized as the underlying mechanism of a wide variety of age-related pathologies including cancer. Cellular senescence has also been described as a ‘double-edged sword’. In cancer, for example, the creation of an immune-suppressive milieu by senescent tumor cells through the senescence-associated secretory phenotype contributes toward carcinogenesis and cancer progression. Recent advances The potential for cellular senescence to confer multi-faceted effects on tissue fate has led to a rejuvenated interest in its landscape and targeting. Interestingly, redox pathways have been described as both triggers and propagators of cellular senescence, leading to intricate cross-links between both pathways. Critical issues In this review, we describe the mechanisms driving cellular senescence, the interface with cellular redox metabolism as well as the role that chemotherapy-induced senescence plays in secondary carcinogenesis. Notably, the role that anti-apoptotic proteins of the Bcl-2 family play in inducing drug resistance via mechanisms that involve senescence induction. Future directions Though the therapeutic targeting of senescent cells as cancer therapy remains in its infancy, we summarize the current development of senotherapeutics, including recognized senotherapies, as well as the repurposing of drugs as senomorphic/senolytic candidates.
Collapse
Affiliation(s)
- Natalie Yl Ngoi
- Department of Haematology-Oncology, National University Cancer Institute, Singapore, Singapore
| | - Angeline Qx Liew
- Integrative Science and Engineering Programme (ISEP), NUS Graduate School (NUSGS), National University of Singapore, Singapore; Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Stephen J F Chong
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Matthew S Davids
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Marie-Veronique Clement
- Integrative Science and Engineering Programme (ISEP), NUS Graduate School (NUSGS), National University of Singapore, Singapore; Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; NUS Medicine Healthy Longevity Program, National University of Singapore, Singapore
| | - Shazib Pervaiz
- Integrative Science and Engineering Programme (ISEP), NUS Graduate School (NUSGS), National University of Singapore, Singapore; Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; NUS Medicine Healthy Longevity Program, National University of Singapore, Singapore; NUS Centre for Cancer Research (N2CR), Yong Loo Lin School of Medicine, National University of Singapore, Singapore; National University Cancer Institute, National University Health System, Singapore; Faculté de Medicine, University of Paris, Paris, France.
| |
Collapse
|
15
|
Ponte LGS, Pavan ICB, Mancini MCS, da Silva LGS, Morelli AP, Severino MB, Bezerra RMN, Simabuco FM. The Hallmarks of Flavonoids in Cancer. Molecules 2021; 26:2029. [PMID: 33918290 PMCID: PMC8038160 DOI: 10.3390/molecules26072029] [Citation(s) in RCA: 68] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 03/25/2021] [Accepted: 03/30/2021] [Indexed: 12/12/2022] Open
Abstract
Flavonoids represent an important group of bioactive compounds derived from plant-based foods and beverages with known biological activity in cells. From the modulation of inflammation to the inhibition of cell proliferation, flavonoids have been described as important therapeutic adjuvants against several diseases, including diabetes, arteriosclerosis, neurological disorders, and cancer. Cancer is a complex and multifactor disease that has been studied for years however, its prevention is still one of the best known and efficient factors impacting the epidemiology of the disease. In the molecular and cellular context, some of the mechanisms underlying the oncogenesis and the progression of the disease are understood, known as the hallmarks of cancer. In this text, we review important molecular signaling pathways, including inflammation, immunity, redox metabolism, cell growth, autophagy, apoptosis, and cell cycle, and analyze the known mechanisms of action of flavonoids in cancer. The current literature provides enough evidence supporting that flavonoids may be important adjuvants in cancer therapy, highlighting the importance of healthy and balanced diets to prevent the onset and progression of the disease.
Collapse
Affiliation(s)
- Luis Gustavo Saboia Ponte
- Multidisciplinary Laboratory of Food and Health (LabMAS), School of Applied Sciences (FCA), University of Campinas (UNICAMP), Limeira, São Paulo 13484-350, Brazil; (L.G.S.P.); (I.C.B.P.); (M.C.S.M.); (L.G.S.d.S.); (A.P.M.); (M.B.S.); (R.M.N.B.)
| | - Isadora Carolina Betim Pavan
- Multidisciplinary Laboratory of Food and Health (LabMAS), School of Applied Sciences (FCA), University of Campinas (UNICAMP), Limeira, São Paulo 13484-350, Brazil; (L.G.S.P.); (I.C.B.P.); (M.C.S.M.); (L.G.S.d.S.); (A.P.M.); (M.B.S.); (R.M.N.B.)
- Laboratory of Signal Mechanisms (LMS), School of Pharmaceutical Sciences (FCF), University of Campinas (UNICAMP), Campinas, São Paulo 13083-871, Brazil
| | - Mariana Camargo Silva Mancini
- Multidisciplinary Laboratory of Food and Health (LabMAS), School of Applied Sciences (FCA), University of Campinas (UNICAMP), Limeira, São Paulo 13484-350, Brazil; (L.G.S.P.); (I.C.B.P.); (M.C.S.M.); (L.G.S.d.S.); (A.P.M.); (M.B.S.); (R.M.N.B.)
| | - Luiz Guilherme Salvino da Silva
- Multidisciplinary Laboratory of Food and Health (LabMAS), School of Applied Sciences (FCA), University of Campinas (UNICAMP), Limeira, São Paulo 13484-350, Brazil; (L.G.S.P.); (I.C.B.P.); (M.C.S.M.); (L.G.S.d.S.); (A.P.M.); (M.B.S.); (R.M.N.B.)
| | - Ana Paula Morelli
- Multidisciplinary Laboratory of Food and Health (LabMAS), School of Applied Sciences (FCA), University of Campinas (UNICAMP), Limeira, São Paulo 13484-350, Brazil; (L.G.S.P.); (I.C.B.P.); (M.C.S.M.); (L.G.S.d.S.); (A.P.M.); (M.B.S.); (R.M.N.B.)
| | - Matheus Brandemarte Severino
- Multidisciplinary Laboratory of Food and Health (LabMAS), School of Applied Sciences (FCA), University of Campinas (UNICAMP), Limeira, São Paulo 13484-350, Brazil; (L.G.S.P.); (I.C.B.P.); (M.C.S.M.); (L.G.S.d.S.); (A.P.M.); (M.B.S.); (R.M.N.B.)
| | - Rosangela Maria Neves Bezerra
- Multidisciplinary Laboratory of Food and Health (LabMAS), School of Applied Sciences (FCA), University of Campinas (UNICAMP), Limeira, São Paulo 13484-350, Brazil; (L.G.S.P.); (I.C.B.P.); (M.C.S.M.); (L.G.S.d.S.); (A.P.M.); (M.B.S.); (R.M.N.B.)
| | - Fernando Moreira Simabuco
- Multidisciplinary Laboratory of Food and Health (LabMAS), School of Applied Sciences (FCA), University of Campinas (UNICAMP), Limeira, São Paulo 13484-350, Brazil; (L.G.S.P.); (I.C.B.P.); (M.C.S.M.); (L.G.S.d.S.); (A.P.M.); (M.B.S.); (R.M.N.B.)
| |
Collapse
|
16
|
Rice M, Wong B, Oja M, Samuels K, Williams AK, Fong J, Sapse AM, Maran U, Korobkova EA. A role of flavonoids in cytochrome c-cardiolipin interactions. Bioorg Med Chem 2021; 33:116043. [PMID: 33530021 DOI: 10.1016/j.bmc.2021.116043] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 01/13/2021] [Accepted: 01/20/2021] [Indexed: 11/26/2022]
Abstract
The processes preceding the detachment of cytochrome c (cyt c) from the inner mitochondrial membrane in intrinsic apoptosis involve peroxidation of cardiolipin (CL) catalyzed by cyt c-CL complex. In the present work, we studied the effect of 17 dietary flavonoids on the peroxidase activity of cyt c bound to liposomes. Specifically, we explored the relationship between peroxidase activity and flavonoids' (1) potential to modulate cyt c unfolding, (2) effect on the oxidation state of heme iron, (3) membrane permeability, (4) membrane binding energy, and (5) structure. The measurements revealed that flavones, flavonols, and flavanols were the strongest, while isoflavones were the weakest inhibitors of the oxidation. Flavonoids' peroxidase inhibition activity correlated positively with their potential to suppress Trp-59 fluorescence in cyt c as well as the number of OH groups. Hydrophilic flavonoids, such as catechin, having the lowest membrane permeability and the strongest binding with phosphocholine (PC) based on the quantum chemical calculations exhibited the strongest inhibition of Amplex Red (AR) peroxidation, suggesting a membrane-protective function of flavonoids at the surface. The results of the present research specify basic principles for the design of molecules that will control the catalytic oxidation of lipids in mitochondrial membranes. These principles take into account the number of hydroxyl groups and hydrophilicity of flavonoids.
Collapse
Affiliation(s)
- Malaysha Rice
- Department of Sciences, John Jay College of Criminal Justice, City University of New York, 524 W 59th St., NY 10019, USA
| | - Bokey Wong
- Department of Sciences, John Jay College of Criminal Justice, City University of New York, 524 W 59th St., NY 10019, USA
| | - Mare Oja
- Institute of Chemistry, University of Tartu, Ravila 14A, Tartu 50411, Estonia
| | - Kelley Samuels
- Department of Sciences, John Jay College of Criminal Justice, City University of New York, 524 W 59th St., NY 10019, USA
| | - Alicia K Williams
- Department of Sciences, John Jay College of Criminal Justice, City University of New York, 524 W 59th St., NY 10019, USA
| | - Jenny Fong
- Department of Sciences, John Jay College of Criminal Justice, City University of New York, 524 W 59th St., NY 10019, USA
| | - Anne-Marie Sapse
- Department of Sciences, John Jay College of Criminal Justice, City University of New York, 524 W 59th St., NY 10019, USA; The Graduate Center at the City University of New York, 365 5th Ave, New York, NY 10016, USA
| | - Uko Maran
- Institute of Chemistry, University of Tartu, Ravila 14A, Tartu 50411, Estonia
| | - Ekaterina A Korobkova
- Department of Sciences, John Jay College of Criminal Justice, City University of New York, 524 W 59th St., NY 10019, USA.
| |
Collapse
|
17
|
Flavonoids Induce Migration Arrest and Apoptosis in Detroit 562 Oropharynx Squamous Cell Carcinoma Cells. Processes (Basel) 2021. [DOI: 10.3390/pr9030426] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Despite advances in the treatment of head and neck squamous cell carcinoma (HNSCC), the morbidity remains at a high level due to the resistance of SCC cells to chemotherapeutics. This study aimed to determine and compare the magnitude of the flavonoids’ effectiveness in activating apoptosis and migration arrest in HNSCC cells in vitro. Methods: Head and neck SCC cells of the Detroit 562 line were exposed to a range of concentrations (5–100 μM) of quercetin (Que), hesperidin (Hes) and rutin (Rut) for 24 and 48 h. The SCC cell viability and migration rate were investigated using cytotoxicity and migration inhibition assays. Muse Cell Analyzer flow cytometry was utilized to quantitatively assess the apoptosis rate of Detroit 562 cells exposed to Que, Hes and Rut. The morphology of the SCC cells was evaluated via hematoxylin-eosin staining. Results: The viability diminishment of the Detroit 562-line cells treated with Que, Hes and Rut for 48 h revealed a significant dose-dependent trend, relatively equal for three substances, whereas the most noticeable cytotoxic effect observed for Hes. Exposure to Hes and Rut exhibited a dose-dependent increased proportion of apoptotic SCC cells, at either necrosis or late apoptosis stage. Detroit 562 SCC migration rate and cells motility were halted for the 100 µM dose of Hes and Que. The comparative results elucidated that Hesperidin and Quercetin achieved a more potent reduction of Detroit 562 migration at 24 h. Conclusions: Hesperidin, rutin and quercetin are capable of inducing apoptosis and migration arrest in the Detroit 562 cell line to various extents, resulting in proapoptotic attenuating effects at different magnitudes.
Collapse
|
18
|
Antioxidant and Anti-Inflammatory Activities of Six Flavonoids from Smilax glabra Roxb. Molecules 2020; 25:molecules25225295. [PMID: 33202848 PMCID: PMC7697956 DOI: 10.3390/molecules25225295] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 11/10/2020] [Accepted: 11/11/2020] [Indexed: 02/08/2023] Open
Abstract
This study aimed to isolate, prepare and identify the main flavonoids from a standardized Smilax glabra flavonoids extract (SGF) using preparative HPLC, MS, 1H NMR and 13C NMR, determine the contents of these flavonoids using UPLC, then compare their pharmacological activities in vitro. We obtained six flavonoids from SGF: astilbin (18.10%), neoastilbin (11.04%), isoastilbin (5.03%), neoisoastilbin (4.09%), engeletin (2.58%) and (−)-epicatechin (1.77%). The antioxidant activity of six flavonoids were evaluated by determining the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical and 2,2′-Azinobis (3-ethylbenzothiazoline-6-sulphonic acid) diammonium salt (ABTS+) radical scavenging activity and ferric reducing antioxidant power (FRAP). In addition, the anti-inflammatory activity of six flavonoids were evaluated by determining the production of cytokines (IL-1β, IL-6), nitric oxide (NO) using enzyme linked immunosorbent assay and the NF-κB p65 expression using Western blotting in lipopolysaccharide (LPS)-stimulated RAW264.7 cells. The results showed that (−)-epicatechin, astilbin, neoastilbin, isoastilbin and neoisoastilbin had strong antioxidant activities, not only in DPPH and ABTS+ radicals scavenging capacities, but in FRAP system. Furthermore, all the six flavonoids could significantly inhibit the secretion of IL-1β, IL-6, NO (p < 0.01) and the protein expression of NF-κB p-p65 (p < 0.01) in LPS-stimulated RAW264.7 cells. This study preliminarily verified the antioxidant and anti-inflammatory activities of six flavonoids in S. glabra.
Collapse
|
19
|
Quiles JL, Sánchez-González C, Vera-Ramírez L, Giampieri F, Navarro-Hortal MD, Xiao J, Llopis J, Battino M, Varela-López A. Reductive Stress, Bioactive Compounds, Redox-Active Metals, and Dormant Tumor Cell Biology to Develop Redox-Based Tools for the Treatment of Cancer. Antioxid Redox Signal 2020; 33:860-881. [PMID: 32064905 DOI: 10.1089/ars.2020.8051] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Significance: Cancer is related to redox biology from many points of view, such as initiation and promotion, metabolism and growth, invasion and metastasis, vascularization, or through the interaction with the immune system. In addition, this extremely complex relationship depends on the redox homeostasis of each cellular compartment, which might be used to fight cancer. Recent Advances: New ways of modulating specific and little explored aspects of redox biology have been revealed, as well as new delivery methods or uses of previously known treatments against cancer. Here, we review the latest experimental evidence regarding redox biology in cancer treatment and analyze its potential impact in the development of improved and more effective antineoplastic therapies. Critical Issues: A critical issue that deserves particular attention is the understanding that both extremes of redox biology (i.e., oxidative stress [OS] and reductive stress) might be useful or harmful in relation to cancer prevention and treatment. Future Directions: Additional research is needed to understand how to selectively induce reductive or OS adequately to avoid cancer proliferation or to induce cancer cell death.
Collapse
Affiliation(s)
- José L Quiles
- Department of Physiology, Institute of Nutrition and Food Technology "José Mataix Verdú", Biomedical Research Center, University of Granada, Granada, Spain.,College of Food Science and Technology, Northwest University, Xi'an, China
| | - Cristina Sánchez-González
- Department of Physiology, Institute of Nutrition and Food Technology "José Mataix Verdú", Biomedical Research Center, University of Granada, Granada, Spain
| | - Laura Vera-Ramírez
- Department of Genomic Medicine, GENYO: Centre for Genomics and Oncology (Pfizer-University of Granada and Andalusian Regional Government), Granada, Spain
| | - Francesca Giampieri
- College of Food Science and Technology, Northwest University, Xi'an, China.,Department of Clinical Sciences, Università Politecnica delle Marche, Ancona, Italy
| | - M Dolores Navarro-Hortal
- Department of Physiology, Institute of Nutrition and Food Technology "José Mataix Verdú", Biomedical Research Center, University of Granada, Granada, Spain
| | - Jianbo Xiao
- International Research Center for Food Nutrition and Safety, Jiangsu University, Zhenjiang, China
| | - Juan Llopis
- Department of Physiology, Institute of Nutrition and Food Technology "José Mataix Verdú", Biomedical Research Center, University of Granada, Granada, Spain
| | - Maurizio Battino
- Department of Clinical Sciences, Università Politecnica delle Marche, Ancona, Italy.,International Research Center for Food Nutrition and Safety, Jiangsu University, Zhenjiang, China.,Nutrition and Food Science Group, Department of Analytical and Food Chemistry, CITACA, CACTI, University of Vigo, Vigo, Spain
| | - Alfonso Varela-López
- Department of Physiology, Institute of Nutrition and Food Technology "José Mataix Verdú", Biomedical Research Center, University of Granada, Granada, Spain
| |
Collapse
|
20
|
Zhao W, Cong Y, Li HM, Li S, Shen Y, Qi Q, Zhang Y, Li YZ, Tang YJ. Challenges and potential for improving the druggability of podophyllotoxin-derived drugs in cancer chemotherapy. Nat Prod Rep 2020; 38:470-488. [PMID: 32895676 DOI: 10.1039/d0np00041h] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Covering: up to 2020As a main bioactive component of the Chinese, Indian, and American Podophyllum species, the herbal medicine, podophyllotoxin (PTOX) exhibits broad spectrum pharmacological activity, such as superior antitumor activity and against multiple viruses. PTOX derivatives (PTOXs) could arrest the cell cycle, block the transitorily generated DNA/RNA breaks, and blunt the growth-stimulation by targeting topoisomerase II, tubulin, or insulin-like growth factor 1 receptor. Since 1983, etoposide (VP-16) is being used in frontline cancer therapy against various cancer types, such as small cell lung cancer and testicular cancer. Surprisingly, VP-16 (ClinicalTrials NTC04356690) was also redeveloped to treat the cytokine storm in coronavirus disease 2019 (COVID-19) in phase II in April 2020. The treatment aims at dampening the cytokine storm and is based on etoposide in the case of central nervous system. However, the initial version of PTOX was far from perfect. Almost all podophyllotoxin derivatives, including the FDA-approved drugs VP-16 and teniposide, were seriously limited in clinical therapy due to systemic toxicity, drug resistance, and low bioavailability. To meet this challenge, scientists have devoted continuous efforts to discover new candidate drugs and have developed drug strategies. This review focuses on the current clinical treatment of PTOXs and the prospective analysis for improving druggability in the rational design of new generation PTOX-derived drugs.
Collapse
Affiliation(s)
- Wei Zhao
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China.
| | | | | | | | | | | | | | | | | |
Collapse
|
21
|
Williamson G, Kerimi A. Testing of natural products in clinical trials targeting the SARS-CoV-2 (Covid-19) viral spike protein-angiotensin converting enzyme-2 (ACE2) interaction. Biochem Pharmacol 2020; 178:114123. [PMID: 32593613 PMCID: PMC7316054 DOI: 10.1016/j.bcp.2020.114123] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 06/21/2020] [Accepted: 06/23/2020] [Indexed: 02/03/2023]
Abstract
Commonly used drugs for treating many conditions are either natural products or derivatives. In silico modelling has identified several natural products including quercetin as potential highly effective disruptors of the initial infection process involving binding to the interface between the SARS-CoV-2 (Covid-19) Viral Spike Protein and the epithelial cell Angiotensin Converting Enzyme-2 (ACE2) protein. Here we argue that the oral route of administration of quercetin is unlikely to be effective in clinical trials owing to biotransformation during digestion, absorption and metabolism, but suggest that agents could be administered directly by alternative routes such as a nasal or throat spray.
Collapse
Affiliation(s)
- Gary Williamson
- Department of Nutrition, Dietetics and Food, School of Clinical Sciences at Monash Health, Faculty of Medicine, Nursing and Health Sciences, Monash University, BASE Facility, 264 Ferntree Gully Road, Notting Hill, VIC 3168, Australia.
| | - Asimina Kerimi
- Department of Nutrition, Dietetics and Food, School of Clinical Sciences at Monash Health, Faculty of Medicine, Nursing and Health Sciences, Monash University, BASE Facility, 264 Ferntree Gully Road, Notting Hill, VIC 3168, Australia
| |
Collapse
|
22
|
Filippini T, Malavolti M, Borrelli F, Izzo AA, Fairweather-Tait SJ, Horneber M, Vinceti M. Green tea (Camellia sinensis) for the prevention of cancer. Cochrane Database Syst Rev 2020; 3:CD005004. [PMID: 32118296 PMCID: PMC7059963 DOI: 10.1002/14651858.cd005004.pub3] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND This review is an update of a previously published review in the Cochrane Database of Systematic Reviews (2009, Issue 3).Tea is one of the most commonly consumed beverages worldwide. Teas from the plant Camellia sinensis can be grouped into green, black and oolong tea, and drinking habits vary cross-culturally. C sinensis contains polyphenols, one subgroup being catechins. Catechins are powerful antioxidants, and laboratory studies have suggested that these compounds may inhibit cancer cell proliferation. Some experimental and nonexperimental epidemiological studies have suggested that green tea may have cancer-preventative effects. OBJECTIVES To assess possible associations between green tea consumption and the risk of cancer incidence and mortality as primary outcomes, and safety data and quality of life as secondary outcomes. SEARCH METHODS We searched eligible studies up to January 2019 in CENTRAL, MEDLINE, Embase, ClinicalTrials.gov, and reference lists of previous reviews and included studies. SELECTION CRITERIA We included all epidemiological studies, experimental (i.e. randomised controlled trials (RCTs)) and nonexperimental (non-randomised studies, i.e. observational studies with both cohort and case-control design) that investigated the association of green tea consumption with cancer risk or quality of life, or both. DATA COLLECTION AND ANALYSIS Two or more review authors independently applied the study criteria, extracted data and assessed methodological quality of studies. We summarised the results according to diagnosis of cancer type. MAIN RESULTS In this review update, we included in total 142 completed studies (11 experimental and 131 nonexperimental) and two ongoing studies. This is an additional 10 experimental and 85 nonexperimental studies from those included in the previous version of the review. Eleven experimental studies allocated a total of 1795 participants to either green tea extract or placebo, all demonstrating an overall high methodological quality based on 'Risk of bias' assessment. For incident prostate cancer, the summary risk ratio (RR) in the green tea-supplemented participants was 0.50 (95% confidence interval (CI) 0.18 to 1.36), based on three studies and involving 201 participants (low-certainty evidence). The summary RR for gynaecological cancer was 1.50 (95% CI 0.41 to 5.48; 2 studies, 1157 participants; low-certainty evidence). No evidence of effect of non-melanoma skin cancer emerged (summary RR 1.00, 95% CI 0.06 to 15.92; 1 study, 1075 participants; low-certainty evidence). In addition, adverse effects of green tea extract intake were reported, including gastrointestinal disorders, elevation of liver enzymes, and, more rarely, insomnia, raised blood pressure and skin/subcutaneous reactions. Consumption of green tea extracts induced a slight improvement in quality of life, compared with placebo, based on three experimental studies. In nonexperimental studies, we included over 1,100,000 participants from 46 cohort studies and 85 case-control studies, which were on average of intermediate to high methodological quality based on Newcastle-Ottawa Scale 'Risk of bias' assessment. When comparing the highest intake of green tea with the lowest, we found a lower overall cancer incidence (summary RR 0.83, 95% CI 0.65 to 1.07), based on three studies, involving 52,479 participants (low-certainty evidence). Conversely, we found no association between green tea consumption and cancer-related mortality (summary RR 0.99, 95% CI 0.91 to 1.07), based on eight studies and 504,366 participants (low-certainty evidence). For most of the site-specific cancers we observed a decreased RR in the highest category of green tea consumption compared with the lowest one. After stratifying the analysis according to study design, we found strongly conflicting results for some cancer sites: oesophageal, prostate and urinary tract cancer, and leukaemia showed an increased RR in cohort studies and a decreased RR or no difference in case-control studies. AUTHORS' CONCLUSIONS Overall, findings from experimental and nonexperimental epidemiological studies yielded inconsistent results, thus providing limited evidence for the beneficial effect of green tea consumption on the overall risk of cancer or on specific cancer sites. Some evidence of a beneficial effect of green tea at some cancer sites emerged from the RCTs and from case-control studies, but their methodological limitations, such as the low number and size of the studies, and the inconsistencies with the results of cohort studies, limit the interpretability of the RR estimates. The studies also indicated the occurrence of several side effects associated with high intakes of green tea. In addition, the majority of included studies were carried out in Asian populations characterised by a high intake of green tea, thus limiting the generalisability of the findings to other populations. Well conducted and adequately powered RCTs would be needed to draw conclusions on the possible beneficial effects of green tea consumption on cancer risk.
Collapse
Affiliation(s)
- Tommaso Filippini
- University of Modena and Reggio Emilia, Research Center in Environmental, Nutritional and Genetic Epidemiology (CREAGEN), Department of Biomedical, Metabolic and Neural Sciences, Via Campi 287, Modena, Italy, 41125
| | - Marcella Malavolti
- University of Modena and Reggio Emilia, Research Center in Environmental, Nutritional and Genetic Epidemiology (CREAGEN), Department of Biomedical, Metabolic and Neural Sciences, Via Campi 287, Modena, Italy, 41125
| | - Francesca Borrelli
- University of Naples 'Federico II', Department of Pharmacy, School of Medicine and Surgery, Via D Montesano 49, Naples, Italy, 80131
| | - Angelo A Izzo
- University of Naples 'Federico II', Department of Pharmacy, School of Medicine and Surgery, Via D Montesano 49, Naples, Italy, 80131
| | | | - Markus Horneber
- Paracelsus Medical University, Klinikum Nuremberg, Department of Internal Medicine, Division of Oncology and Hematology, Prof.-Ernst-Nathan-Str. 1, Nuremberg, Germany, D-90419
| | - Marco Vinceti
- University of Modena and Reggio Emilia, Research Center in Environmental, Nutritional and Genetic Epidemiology (CREAGEN), Department of Biomedical, Metabolic and Neural Sciences, Via Campi 287, Modena, Italy, 41125
- Boston University School of Public Health, Department of Epidemiology, 715 Albany Street, Boston, USA, MA 02118
| |
Collapse
|
23
|
He HF, Wei K, Yin J, Ye Y. Insight into Tea Flavonoids: Composition and Chemistry. FOOD REVIEWS INTERNATIONAL 2020. [DOI: 10.1080/87559129.2020.1721530] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Hua-Feng He
- Tea Research Institute, Chinese Academy of Agricultural Sciences, HangZhou, China
| | - Kang Wei
- Tea Research Institute, Chinese Academy of Agricultural Sciences, HangZhou, China
| | - Junfeng Yin
- Tea Research Institute, Chinese Academy of Agricultural Sciences, HangZhou, China
| | - Yang Ye
- Tea Research Institute, Chinese Academy of Agricultural Sciences, HangZhou, China
| |
Collapse
|
24
|
Tiwari P, Mishra KP. Flavonoids sensitize tumor cells to radiation: molecular mechanisms and relevance to cancer radiotherapy. Int J Radiat Biol 2019; 96:360-369. [PMID: 31738629 DOI: 10.1080/09553002.2020.1694193] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Purpose: Radiobiological research continues to focus on finding newer strategies for enhanced killing of tumor cells by ionizing radiation. In recent years, chemotherapeutic drugs have been found to possess the capabilities to sensitize tumor cells without affecting the normal cells. There have been increasing research efforts to identify novel and nontoxic compounds which cause minimal or no harm to normal cells but maximize tumor toxicity response to radiation exposure. Extensive researches on flavonoids that are compounds derived from plants have shown that these have promising abilities as radioprotectors and radiosensitizers.Conclusions: In this review, we examine the role of flavonoids as potential radiosensitizers, review the underlying molecular mechanisms and discuss their potential usefulness in improving cancer radiotherapy. It is emphasized that obtaining a deeper insight into the molecular mechanisms underlying the combined action of flavonoids and ionizing radiation may provide new directions for radiobiological research applicable to the much needed enhanced selective tumor cytotoxicity to treatment agents.
Collapse
Affiliation(s)
- Prabha Tiwari
- National Institutes of Biomedical Innovation Health and Nutrition, Ibaraki, Osaka, Japan
| | - Kaushala Prasad Mishra
- Foundation for Education and Research, Ex Bhabha Atomic Research Center, Mumbai, Maharashtra, India
| |
Collapse
|
25
|
Borsari C, Jiménez-Antón MD, Eick J, Bifeld E, Torrado JJ, Olías-Molero AI, Corral MJ, Santarem N, Baptista C, Severi L, Gul S, Wolf M, Kuzikov M, Ellinger B, Reinshagen J, Witt G, Linciano P, Tait A, Costantino L, Luciani R, Tejera Nevado P, Zander-Dinse D, Franco CH, Ferrari S, Moraes CB, Cordeiro-da-Silva A, Ponterini G, Clos J, Alunda JM, Costi MP. Discovery of a benzothiophene-flavonol halting miltefosine and antimonial drug resistance in Leishmania parasites through the application of medicinal chemistry, screening and genomics. Eur J Med Chem 2019; 183:111676. [DOI: 10.1016/j.ejmech.2019.111676] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 08/01/2019] [Accepted: 09/02/2019] [Indexed: 01/24/2023]
|
26
|
Checker R, Pal D, Patwardhan RS, Basu B, Sharma D, Sandur SK. Modulation of Caspase-3 activity using a redox active vitamin K3 analogue, plumbagin, as a novel strategy for radioprotection. Free Radic Biol Med 2019; 143:560-572. [PMID: 31493505 DOI: 10.1016/j.freeradbiomed.2019.09.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 08/30/2019] [Accepted: 09/01/2019] [Indexed: 12/15/2022]
Abstract
Radiation induced damage to normal cells is a major shortcoming of conventional radiotherapy, which necessitates the development of novel radio-protective drugs. An ideal radio-modulator would protect normal cells while having cytotoxic effects on cancer cells. Plumbagin is a potent anti-tumour agent and has been shown to sensitize tumour cells to radiation-induced damage. In the present study, we have evaluated the radio-protective potential of plumbagin and found that it protected normal lymphocytes against radiation-induced apoptosis, but did not protect cancer cells against radiation. Plumbagin offered radioprotection even when it was added to cells after irradiation. The ability of only thiol based antioxidants to abrogate the radio-protective effects of plumbagin suggested a pivotal role of thiol groups in the radio-protective activity of plumbagin. Further, protein interaction network (PIN) analysis was used to predict the molecular targets of plumbagin. Based on the inputs from plumbagin's PIN and in light of its well-documented ability to modulate thiol groups, we proposed that plumbagin may act via modulation of caspase enzyme which harbours a critical catalytic cysteine. Indeed, plumbagin suppressed radiation-induced increase in homogenous caspase and caspase-3 activity in lymphocytes. Plumbagin also inhibited the activity of recombinant caspase-3 and mass spectrometric analysis revealed that plumbagin covalently interacts with caspase-3. Further, the in vivo radioprotective efficacy of plumbagin (single dose of 2mg/kg body weight) was demonstrated by its ability to rescue mice against radiation (7.5 Gy; Whole Body Irradiation) induced mortality. These results indicate that plumbagin prevents radiation induced apoptosis specifically in normal cells by inhibition of caspase-3 activity.
Collapse
Affiliation(s)
- Rahul Checker
- Radiation Biology & Health Sciences Division, Bio-science Group, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India; Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400094, India
| | - Debojyoti Pal
- Radiation Biology & Health Sciences Division, Bio-science Group, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India
| | - Raghavendra S Patwardhan
- Radiation Biology & Health Sciences Division, Bio-science Group, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India
| | - Bhakti Basu
- Molecular Biology Division, Bio-science Group, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India; Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400094, India
| | - Deepak Sharma
- Radiation Biology & Health Sciences Division, Bio-science Group, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India; Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400094, India.
| | - Santosh K Sandur
- Radiation Biology & Health Sciences Division, Bio-science Group, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India; Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400094, India.
| |
Collapse
|
27
|
Yang T, Feng YL, Chen L, Vaziri ND, Zhao YY. Dietary natural flavonoids treating cancer by targeting aryl hydrocarbon receptor. Crit Rev Toxicol 2019; 49:445-460. [PMID: 31433724 DOI: 10.1080/10408444.2019.1635987] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
The role of aryl hydrocarbon receptor (AhR) as a ligand-activated transcription factor in the field of cancer has gradually been unveiled. A strong body of evidence indicated that AhR is implicated in cell proliferation and apoptosis, immune metabolism and other processes, which further affected tumor growth, survival, migration, and invasion. Therefore, AhR targeted therapy may become a new method for cancer treatment and provide a new direction for clinical tumor treatment. Astonishingly, the largest source of exposure of animals and humans to AhR ligands (synthetic and natural) comes from the diet. Myriad studies have described that various natural dietary chemicals can directly activate and/or inhibit the AhR signaling pathway. Of note, numerous natural products contribute to AhR active, of which dietary flavonoids are the largest class of natural AhR ligands. As interest in AhR and its ligands increases, it seems sensible to summarize current research on these ligands. In this review, we highlight the role of AhR in tumorigenesis and focus on the double effect of AhR in cancer therapy. We explored the molecular mechanism of AhR ligands on cancer through a few AhR agonists/antagonists currently in clinical practice. Ultimately, we summarize and highlight the latest progression of dietary flavonoids as AhR ligands in cancer inhibition, including the limitations and deficiencies of it in clinical research. This review will offer a comprehensive understanding of AhR and its dietary ligands which may dramatically pave the way for targeted cancer treatment.
Collapse
Affiliation(s)
- Tian Yang
- Faculty of Life Science & Medicine, Northwest University, Xi'an, China
| | - Ya-Long Feng
- Faculty of Life Science & Medicine, Northwest University, Xi'an, China
| | - Lin Chen
- Faculty of Life Science & Medicine, Northwest University, Xi'an, China
| | - Nosratola D Vaziri
- Division of Nephrology and Hypertension, School of Medicine, University of California Irvine, Irvine, CA, USA
| | - Ying-Yong Zhao
- Faculty of Life Science & Medicine, Northwest University, Xi'an, China
| |
Collapse
|
28
|
Batinic-Haberle I, Tovmasyan A, Spasojevic I. Mn Porphyrin-Based Redox-Active Drugs: Differential Effects as Cancer Therapeutics and Protectors of Normal Tissue Against Oxidative Injury. Antioxid Redox Signal 2018; 29:1691-1724. [PMID: 29926755 PMCID: PMC6207162 DOI: 10.1089/ars.2017.7453] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
SIGNIFICANCE After approximatelty three decades of research, two Mn(III) porphyrins (MnPs), MnTE-2-PyP5+ (BMX-010, AEOL10113) and MnTnBuOE-2-PyP5+ (BMX-001), have progressed to five clinical trials. In parallel, another similarly potent metal-based superoxide dismutase (SOD) mimic-Mn(II)pentaaza macrocycle, GC4419-has been tested in clinical trial on application, identical to that of MnTnBuOE-2-PyP5+-radioprotection of normal tissue in head and neck cancer patients. This clearly indicates that Mn complexes that target cellular redox environment have reached sufficient maturity for clinical applications. Recent Advances: While originally developed as SOD mimics, MnPs undergo intricate interactions with numerous redox-sensitive pathways, such as those involving nuclear factor κB (NF-κB) and nuclear factor E2-related factor 2 (Nrf2), thereby impacting cellular transcriptional activity. An increasing amount of data support the notion that MnP/H2O2/glutathione (GSH)-driven catalysis of S-glutathionylation of protein cysteine, associated with modification of protein function, is a major action of MnPs on molecular level. CRITICAL ISSUES Differential effects of MnPs on normal versus tumor cells/tissues, which support their translation into clinic, arise from differences in their accumulation and redox environment of such tissues. This in turn results in different yields of MnP-driven modifications of proteins. Thus far, direct evidence for such modification of NF-κB, mitogen-activated protein kinases (MAPK), phosphatases, Nrf2, and endogenous antioxidative defenses was provided in tumor, while indirect evidence shows the modification of NF-κB and Nrf2 translational activities by MnPs in normal tissue. FUTURE DIRECTIONS Studies that simultaneously explore differential effects in same animal are lacking, while they are essential for understanding of extremely intricate interactions of metal-based drugs with complex cellular networks of normal and cancer cells/tissues.
Collapse
Affiliation(s)
- Ines Batinic-Haberle
- 1 Department of Radiation Oncology, Duke University School of Medicine , Durham, North Carolina
| | - Artak Tovmasyan
- 1 Department of Radiation Oncology, Duke University School of Medicine , Durham, North Carolina
| | - Ivan Spasojevic
- 2 Department of Medicine, Duke University School of Medicine , Durham, North Carolina.,3 PK/PD Core Laboratory, Pharmaceutical Research Shared Resource, Duke Cancer Institute , Durham, North Carolina
| |
Collapse
|
29
|
Aniya Y. Development of bioresources in Okinawa: understanding the multiple targeted actions of antioxidant phytochemicals. J Toxicol Pathol 2018; 31:241-253. [PMID: 30393428 PMCID: PMC6206290 DOI: 10.1293/tox.2018-0041] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Accepted: 07/13/2018] [Indexed: 02/06/2023] Open
Abstract
In research to develop healthy foods or preventive medicines from edible and medicinal herbs in Okinawa, we focused on the antioxidant activities of those bioresources. We first confirmed that the herbal antioxidant activities of such herbs increased upon ultraviolet irradiation treatment. This observation explains the high antioxidant activity of Okinawan vegetables, which grow under exposure to stronger ultraviolet light compared with those in other prefectures in Japan. Antidiabetic, hepatoprotective, cancer preventive, and cardioprotective actions were clarified using herbal extracts, and quercetin, chlorogenic acid, and gallic acid derivatives were isolated as antioxidant components from the herbs. Dimerumic acid was also isolated from the mold Monascus anka. All these antioxidants showed strong radical scavenging activities in vitro and beneficial effects in animal models. However, the concentrations of these compounds used in vivo seemed to be too low to have a physiologically important antioxidant effect based on their radical scavenging activities in vitro. Therefore, I performed a literature survey of antioxidant activities in vivo. Accumulating evidence has emerged that antioxidant phytochemicals show not only radical scavenging activities in vitro but also pleiotropic actions in vivo. The multitargeted, beneficial effects of antioxidant phytochemicals can be rationally explained using the xenohormesis concept, in which phytochemicals are the products of plant evolutionary adaptation to stress in plants, and their ability to induce a stress-adaptive response has been evolutionarily conserved in animals.
Collapse
Affiliation(s)
- Yoko Aniya
- University of the Ryukyus, Senbaru-1, Nishihara, Okinawa 903-0213, Japan
| |
Collapse
|
30
|
Williamson G, Kay CD, Crozier A. The Bioavailability, Transport, and Bioactivity of Dietary Flavonoids: A Review from a Historical Perspective. Compr Rev Food Sci Food Saf 2018; 17:1054-1112. [DOI: 10.1111/1541-4337.12351] [Citation(s) in RCA: 271] [Impact Index Per Article: 45.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2018] [Revised: 03/13/2018] [Accepted: 03/14/2018] [Indexed: 12/27/2022]
Affiliation(s)
| | - Colin D. Kay
- Food Bioprocessing and Nutrition Sciences, Plants for Human Health Inst. North Carolina State Univ. North Carolina Research Campus Kannapolis NC 28081 U.S.A
| | - Alan Crozier
- Dept. of Nutrition Univ. of California Davis CA 95616 U.S.A
- School of Medicine Dentistry and Nursing, Univ. Glasgow Glasgow G12 8QQ UK
| |
Collapse
|
31
|
Almeida AF, Borge GIA, Piskula M, Tudose A, Tudoreanu L, Valentová K, Williamson G, Santos CN. Bioavailability of Quercetin in Humans with a Focus on Interindividual Variation. Compr Rev Food Sci Food Saf 2018; 17:714-731. [PMID: 33350133 DOI: 10.1111/1541-4337.12342] [Citation(s) in RCA: 132] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 01/27/2018] [Accepted: 01/30/2018] [Indexed: 01/12/2023]
Abstract
After consumption of plant-derived foods or beverages, dietary polyphenols such as quercetin are absorbed in the small intestine and metabolized by the body, or they are subject to catabolism by the gut microbiota followed by absorption of the resulting products by the colon. The resulting compounds are bioavailable, circulate in the blood as conjugates with glucuronide, methyl, or sulfate groups attached, and they are eventually excreted in the urine. In this review, the various conjugates from different intervention studies are summarized and discussed. In addition, the substantial variation between different individuals in the measured quercetin bioavailability parameters is assessed in detail by examining published human intervention studies where sources of quercetin have been consumed in the form of food, beverages, or supplements. It is apparent that most reported studies have examined quercetin and/or metabolites in urine and plasma from a relatively small number of volunteers. Despite this limitation, it is evident that there is less interindividual variation in metabolites which are derived from absorption in the small intestine compared to catabolites derived from the action of microbiota in the colon. There is also some evidence that a high absorber of intact quercetin conjugates could be a low absorber of microbiota-catalyzed phenolics, and vice versa. From the studies reported so far, the reasons or causes of the interindividual differences are not clear, but, based on the known metabolic pathways, it is predicted that dietary history, genetic polymorphisms, and variations in gut microbiota metabolism would play significant roles. In conclusion, quercetin bioavailability is subject to substantial variation between individuals, and further work is required to establish if this contributes to interindividual differences in biological responses.
Collapse
Affiliation(s)
- A Filipa Almeida
- Inst. de Biologia Experimental e Tecnológica, 2780-901 Oeiras, Portugal.,Inst. de Tecnologia Química e Biológica António Xavier, Univ. Nova de Lisboa, 2780-157 Oeiras, Portugal
| | - Grethe Iren A Borge
- Nofima AS, the Norwegian Inst. of Food, Fisheries and Aquaculture Research, Ås, Norway
| | - Mariusz Piskula
- Inst. of Animal Reproduction and Food Research, Polish Academy of Sciences, 10-748 Olsztyn, Poland
| | - Adriana Tudose
- Central Military Emergency Univ. Hospital "dr. Carol Davila", Bucharest, 010825, Romania
| | - Liliana Tudoreanu
- Faculty of Veterinary Medicine, Univ. of Agronomic Sciences and Veterinary Medicine of Bucharest, Bucharest, Romania
| | - Kateřina Valentová
- Inst. of Microbiology of the Czech Academy of Sciences, Laboratory of Biotransformation, 14220 Prague, Czech Republic
| | - Gary Williamson
- School of Food Science and Nutrition, Univ. of Leeds, Leeds, United Kingdom
| | - Cláudia N Santos
- Inst. de Biologia Experimental e Tecnológica, 2780-901 Oeiras, Portugal.,Inst. de Tecnologia Química e Biológica António Xavier, Univ. Nova de Lisboa, 2780-157 Oeiras, Portugal
| |
Collapse
|
32
|
Cytochrome P450 CYP1 metabolism of hydroxylated flavones and flavonols: Selective bioactivation of luteolin in breast cancer cells. Food Chem Toxicol 2017; 110:383-394. [PMID: 29097115 DOI: 10.1016/j.fct.2017.10.051] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 10/27/2017] [Accepted: 10/28/2017] [Indexed: 12/16/2022]
Abstract
Natural flavonoids with methoxy substitutions are metabolized by CYP1 enzymes to yield the corresponding demethylated products. The present study aimed to characterize the metabolism and further antiproliferative activity of the hydroxylated flavonoids apigenin, luteolin, scutellarein, kaempferol and quercetin in CYP1 recombinant enzymes and in the CYP1 expressing cell lines MCF7 and MDA-MB-468, respectively. Apigenin was converted to luteolin and scutellarein, whereas kaempferol was metabolized only to quercetin by recombinant CYP1 enzymes. Luteolin metabolism yielded 6 hydroxyluteolin only by recombinant CYP1B1, whereas CYP1A1 and CYP1A2 were not capable of metabolizing this compound. Molecular modeling demonstrated that CYP1B1 favored the A ring orientation of apigenin and luteolin to the heme group compared with CYP1A1. The IC50 of the compounds luteolin, scutellarein and 6 hydroxyluteolin was significantly lower in MDA-MB-468, MCF7 and MCF10A cells compared with that of apigenin. Similarly, the IC50 of quercetin in MDA-MB-468 cells was significantly lower compared with that of kaempferol. The most potent compound was luteolin in MDA-MB-468 cells (IC50 = 2 ± 0.3 μM). In the presence of the CYP1-inhibitors α-napthoflavone and/or acacetin, luteolin activation was lessened. Taken collectively, the data demonstrate that the metabolism of hydroxylated flavonoids by cytochrome P450 CYP1 enzymes, notably CYP1A1 and CYP1B1, can enhance their antiproliferative activity in breast cancer cells. In addition, this antiproliferative activity is attributed to the combined action of the parent compound and the corresponding CYP1 metabolites.
Collapse
|