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Stasiłowicz-Krzemień A, Gościniak A, Formanowicz D, Cielecka-Piontek J. Natural Guardians: Natural Compounds as Radioprotectors in Cancer Therapy. Int J Mol Sci 2024; 25:6937. [PMID: 39000045 PMCID: PMC11241526 DOI: 10.3390/ijms25136937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Revised: 06/17/2024] [Accepted: 06/21/2024] [Indexed: 07/14/2024] Open
Abstract
Cancer remains a significant global health challenge, with millions of deaths attributed to it annually. Radiotherapy, a cornerstone in cancer treatment, aims to destroy cancer cells while minimizing harm to healthy tissues. However, the harmful effects of irradiation on normal cells present a formidable obstacle. To mitigate these effects, researchers have explored using radioprotectors and mitigators, including natural compounds derived from secondary plant metabolites. This review outlines the diverse classes of natural compounds, elucidating their roles as protectants of healthy cells. Furthermore, the review highlights the potential of these compounds as radioprotective agents capable of enhancing the body's resilience to radiation therapy. By integrating natural radioprotectors into cancer treatment regimens, clinicians may improve therapeutic outcomes while minimizing the adverse effects on healthy tissues. Ongoing research in this area holds promise for developing complementary strategies to optimize radiotherapy efficacy and enhance patient quality of life.
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Affiliation(s)
- Anna Stasiłowicz-Krzemień
- Department of Pharmacognosy and Biomaterials, Poznan University of Medical Sciences, Rokietnicka 3, 60-806 Poznan, Poland; (A.S.-K.); (A.G.)
| | - Anna Gościniak
- Department of Pharmacognosy and Biomaterials, Poznan University of Medical Sciences, Rokietnicka 3, 60-806 Poznan, Poland; (A.S.-K.); (A.G.)
| | - Dorota Formanowicz
- Department of Medical Chemistry and Laboratory Medicine, Poznan University of Medical Sciences, Rokietnicka 8, 60-806 Poznan, Poland;
| | - Judyta Cielecka-Piontek
- Department of Pharmacognosy and Biomaterials, Poznan University of Medical Sciences, Rokietnicka 3, 60-806 Poznan, Poland; (A.S.-K.); (A.G.)
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Mukherjee S, Gupta P, Ghosh S, Choudhury S, Das A, Ahir M, Adhikary A, Chattopadhyay S. Targeted tumor killing by pomegranate polyphenols: Pro-oxidant role of a classical antioxidant. J Nutr Biochem 2023; 115:109283. [PMID: 36791995 DOI: 10.1016/j.jnutbio.2023.109283] [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: 08/29/2022] [Revised: 01/03/2023] [Accepted: 02/08/2023] [Indexed: 02/16/2023]
Abstract
One of the key biochemical features that distinguish a cancer cell from normal cells is its persistent pro-oxidative state that leads to intrinsic oxidative stress. Malignant cells have evolved sophisticated adaptation systems that involve high dependency on antioxidant functions and upregulation of pro-survival molecules to counteract the deleterious effects of reactive species and to maintain dynamic redox balance. This situation renders them vulnerable to further oxidative challenges by exogenous agents. In the present study, we advocated that pomegranate polyphenols act as pro-oxidants and trigger ROS-mediated apoptosis in cancer cells. With the help of both in vitro and in vivo models, we have established that pomegranate fruit extract (PFE) can cause a significant reduction in tumor proliferation while leaving normal tissues and cells unharmed. Administration of PFE (0.2% v/v) in Erhlich's ascites carcinoma-bearing mice for 3 weeks, inhibited the nuclear factor (erythroid-derived 2)-like 2-antioxidant response element signaling cascade, increased intracellular reactive oxygen species content, altered glutathione cycle thereby activating reactive oxygen species-induced apoptotic pathway in Erhlich's ascites carcinoma cells. Moreover, PFE mitigated epithelial to mesenchymal transition and migration in triple negative breast cancer cells (MDA-MB 231 cells) by down-regulating nuclear factor kappa light-chain-enhancer of activated B cells. Pre-treatment of tumor cells with N-acetyl cysteine protected these cells from undergoing PFE-induced apoptosis while siRNA-mediated silencing of Nuclear factor (erythroid-derived 2)-like 2 and nuclear factor kappa light-chain-enhancer of activated B cells in tumor cells increased the cytotoxic potential and pro-oxidative activity of PFE, indicating a clear role of these transcription factors in orchestrating the anticancer/pro-oxidative properties of PFE. The seminal findings provided may be exploited to develop potential therapeutic targets for selective killing of malignant cells.
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Affiliation(s)
| | - Payal Gupta
- Department of Physiology, University of Calcutta, Kolkata, India
| | - Sayan Ghosh
- Department of Physiology, University of Calcutta, Kolkata, India
| | | | - Ankur Das
- Department of Physiology, University of Calcutta, Kolkata, India
| | - Manisha Ahir
- Centre for Research in Nanoscience and Nanotechnology, University of Calcutta, Kolkata, India
| | - Arghya Adhikary
- Centre for Research in Nanoscience and Nanotechnology, University of Calcutta, Kolkata, India
| | - Sreya Chattopadhyay
- Department of Physiology, University of Calcutta, Kolkata, India; Centre for Research in Nanoscience and Nanotechnology, University of Calcutta, Kolkata, India.
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Explore the mechanism of pulsed electric field technology on improving the antioxidant activity of Leu-Tyr-Gly-Ala-Leu-Gly-Leu. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.101629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Checker R, Patwardhan RS, Jayakumar S, Maurya DK, Bandekar M, Sharma D, Sandur SK. Chemical and biological basis for development of novel radioprotective drugs for cancer therapy. Free Radic Res 2021; 55:595-625. [PMID: 34181503 DOI: 10.1080/10715762.2021.1876854] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Ionizing radiation (IR) causes chemical changes in biological systems through direct interaction with the macromolecules or by causing radiolysis of water. This property of IR is harnessed in the clinic for radiotherapy in almost 50% of cancers patients. Despite the advent of stereotactic radiotherapy instruments and other advancements in shielding techniques, the inadvertent deposition of radiation dose in the surrounding normal tissue can cause late effects of radiation injury in normal tissues. Radioprotectors, which are chemical or biological agents, can reduce or mitigate these toxic side-effects of radiotherapy in cancer patients and also during radiation accidents. The desired characteristics of an ideal radioprotector include low chemical toxicity, high risk to benefit ratio and specific protection of normal cells against the harmful effects of radiation without compromising the cytotoxic effects of IR on cancer cells. Since reactive oxygen species (ROS) are the major contributors of IR mediated toxicity, plethora of studies have highlighted the potential role of antioxidants to protect against IR induced damage. However, owing to the lack of any clinically approved radioprotector against whole body radiation, researchers have shifted the focus toward finding alternate targets that could be exploited for the development of novel agents. The present review provides a comprehensive insight in to the different strategies, encompassing prime molecular targets, which have been employed to develop radiation protectors/countermeasures. It is anticipated that understanding such factors will lead to the development of novel strategies for increasing the outcome of radiotherapy by minimizing normal tissue toxicity.
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Affiliation(s)
- Rahul Checker
- Radiation Biology & Health Sciences Division, Bio-science Group, Bhabha Atomic Research Centre, Mumbai, India.,Homi Bhabha National Institute, Anushaktinagar, Mumbai, India
| | - Raghavendra S Patwardhan
- Radiation Biology & Health Sciences Division, Bio-science Group, Bhabha Atomic Research Centre, Mumbai, India.,Homi Bhabha National Institute, Anushaktinagar, Mumbai, India
| | - Sundarraj Jayakumar
- Radiation Biology & Health Sciences Division, Bio-science Group, Bhabha Atomic Research Centre, Mumbai, India
| | - Dharmendra Kumar Maurya
- Radiation Biology & Health Sciences Division, Bio-science Group, Bhabha Atomic Research Centre, Mumbai, India.,Homi Bhabha National Institute, Anushaktinagar, Mumbai, India
| | - Mayuri Bandekar
- Radiation Biology & Health Sciences Division, Bio-science Group, Bhabha Atomic Research Centre, Mumbai, India
| | - Deepak Sharma
- Radiation Biology & Health Sciences Division, Bio-science Group, Bhabha Atomic Research Centre, Mumbai, India.,Homi Bhabha National Institute, Anushaktinagar, Mumbai, India
| | - Santosh K Sandur
- Radiation Biology & Health Sciences Division, Bio-science Group, Bhabha Atomic Research Centre, Mumbai, India.,Homi Bhabha National Institute, Anushaktinagar, Mumbai, India
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Wu SY, Chen YT, Tsai GY, Hsu FY, Hwang PA. Protective Effect of Low-Molecular-Weight Fucoidan on Radiation-Induced Fibrosis Through TGF-β1/Smad Pathway-Mediated Inhibition of Collagen I Accumulation. Mar Drugs 2020; 18:E136. [PMID: 32120789 PMCID: PMC7142431 DOI: 10.3390/md18030136] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 02/20/2020] [Accepted: 02/25/2020] [Indexed: 12/22/2022] Open
Abstract
Radiation-induced fibrosis (RIF) occurs after radiation therapy in normal tissues due to excessive production and deposition of extracellular matrix proteins and collagen, possibly resulting in organ function impairment. This study investigates the effects of low-molecular-weight fucoidan (LMF) on irradiated NIH3T3 cells. Specifically, we quantified cellular metabolic activity, fibrosis-related mRNA expression, transforming growth factor beta-1 (TGF-β1), and collagen-1 protein expression, and fibroblast contractility in response to LMF. LMF pre + post-treatment could more effectively increase cellular metabolic activity compared with LMF post-treatment. LMF pre + post-treatment inhibited TGF-β1 expression, which mediates negative activation of phosphorylated Smad3 (pSmad3) and Smad4 complex formation and suppresses downstream collagen I accumulation. In addition, LMF pre + post-treatment significantly reduced actin-stress fibers in irradiated NIH3T3 cells. LMF, a natural substance obtained from brown seaweed, may be a candidate agent for preventing or inhibiting RIF.
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Affiliation(s)
- Szu-Yuan Wu
- Department of Food Nutrition and Health Biotechnology, College of Medical and Health Science, Asia University, Taichung 413, Taiwan;
- Division of Radiation Oncology, Lo-Hsu Medical Foundation, Lotung Poh-Ai Hospital, Yilan 265, Taiwan
- Department of Radiation Oncology, Wan Fang Hospital, Taipei Medical University, Taipei 116, Taiwan
- Big Data Center, Lo-Hsu Medical Foundation, Lotung Poh-Ai Hospital, Yilan 265, Taiwan
- Department of Healthcare Administration, College of Medical and Health Science, Asia University, Taichung 413, Taiwan
| | - Yu-Ting Chen
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung 202, Taiwan; (Y.-T.C.); (G.-Y.T.); (F.-Y.H.)
| | - Guo-Yu Tsai
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung 202, Taiwan; (Y.-T.C.); (G.-Y.T.); (F.-Y.H.)
| | - Fu-Yin Hsu
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung 202, Taiwan; (Y.-T.C.); (G.-Y.T.); (F.-Y.H.)
| | - Pai-An Hwang
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung 202, Taiwan; (Y.-T.C.); (G.-Y.T.); (F.-Y.H.)
- Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung 202, Taiwan
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Protective Effect of JXT Ethanol Extract on Radiation-Induced Hematopoietic Alteration and Oxidative Stress in the Liver. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:9017835. [PMID: 30510630 PMCID: PMC6230390 DOI: 10.1155/2018/9017835] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 08/01/2018] [Accepted: 09/04/2018] [Indexed: 01/22/2023]
Abstract
This study aims at investigating the radioprotective effect of ethanol extract from Ji-Xue-Teng (JXT, Spatholobus suberectus) on radiation-induced hematopoietic alteration and oxidative stress in the liver. Mice were exposed to a single acute γ-radiation for the whole body at the dose of 6.0 Gy, then subjected to administration of amifostine (45 mg/kg) or JXT (40 g crude drug/kg) once a day for 28 consecutive days, respectively. Bone marrow cells and hemogram including white cells, red cells, platelet counts, and hemoglobin level were examined. The protein expression levels of pJAK2/JAK2, pSTAT5a/STAT5a, pSTAT5b/STAT5b, and Bcl-2 in bone marrow tissue; levels of reactive oxygen species (ROS); and the activity of superoxide dismutase (SOD), malondialdehyde (MDA), and glutathione peroxidase (GSH-Px) in serum and liver tissue were determined. At the end of the experiment, the effect of JXT on cell viability and G-CSF and G-CSFR levels in NFS-60 cells were tested by CCK-8 assay, ELISA, and flow cytometry. The results showed that the mice exposed to γ-radiation alone exhibited a typical hematopoietic syndrome. In contrast, at the end of the 28-day experiment, irradiated mice subjected to oral administration of JXT showed an obvious improvement on blood profile with reduced leucopenia, thrombocytopenia (platelet counts), RBC, and hemoglobin levels, as well as bone marrow cells. The expression of pJAK2/JAK2, pSTAT5a/STAT5a, and Bcl-2 in bone marrow tissue was increased after JXT treatment. The elevation of ROS was due to radiation-induced toxicity, but JXT significantly reduced the ROS level in serum and liver tissue, elevated endogenous SOD and GSH-PX levels, and reduced the MDA level in the liver. JXT could also increase cell viability and G-CSFR level in NFS-60 cells, which was similar to exogenous G-CSF. Our findings suggested that oral administration of JXT effectively facilitated the recovery of hematopoietic bone marrow damage and oxidative stress of the mice induced by γ-radiation.
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Abstract
Radiotherapy is one of the most efficient ways to treat cancer. However, deleterious effects, such as acute and chronic toxicities that reduce the quality of life, may result. Naturally occurring compounds have been shown to be non-toxic over wide dose ranges and are inexpensive and effective. Additionally, pharmacological strategies have been developed that use radioprotectors to inhibit radiation-induced toxicities. Currently available radioprotectors have several limitations, including toxicity. In this review, we present the mechanisms of proven radioprotectors, ranging from free radical scavenging (the best-known mechanism of radioprotection) to molecular-based radioprotection (e.g., upregulating expression of heat shock proteins). Finally, we discuss naturally occurring compounds with radioprotective properties in the context of these mechanisms.
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Ding F, Zhang N, Wang Z, Qiu J. The Radioprotective Effect of Polyphenols From Pinecones of Pinus koraiensis
and Their Synergistic Effect With Auricularia auricula-judae
(Bull.) J. Schröt Polysaccharides. STARCH-STARKE 2018. [DOI: 10.1002/star.201800009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Fangli Ding
- Department of Food Science; School of Chemistry and Chemical Engineering; Harbin Institute of Technology; Harbin 150001 China
| | - Naixun Zhang
- Department of Food Science and Engineering; School of Forestry; Northeast Forestry University; Harbin 150040 China
| | - Zhenyu Wang
- Department of Food Science; School of Chemistry and Chemical Engineering; Harbin Institute of Technology; Harbin 150001 China
| | - Junqiang Qiu
- Department of Food Science; School of Chemistry and Chemical Engineering; Harbin Institute of Technology; Harbin 150001 China
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de Siqueira WN, Dos Santos FTJ, de Souza TF, de Vasconcelos Lima M, Silva HAMF, de Oliveira PSS, da Rocha Pitta MG, Bezerra MBCF, de Salazar E Fernandes T, de França EJ, da Silva EB, de Albuquerque Melo AMM. Study of the Potential Radiomitigator Effect of Quercetin on Human Lymphocytes. Inflammation 2018; 42:124-134. [PMID: 30173325 DOI: 10.1007/s10753-018-0878-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Several substances of synthetic and natural origin have been studied to determine their ability to protect the body from damage caused by ionizing radiation. Among these substances, quercetin has been shown to be a naturally occurring molecule with high radioprotective and radiomitigator potential due to its antioxidant properties. The objective of this work was to ascertain the potential radiomitigator effect of quercetin on chromosome aberration yield in lymphocytes of in vitro-irradiated human peripheral blood. At first, the DPPH (2,2-diphenyl-1-picryl-hydrazyl) radical capture test was performed to determine the antioxidant activity of quercetin and to select the concentrations to be tested. The blood was irradiated at doses of 2.5, 3.5, and 4.5 Gy and lymphocytes were cultured with quercetin at preselected concentrations of 37.5 and 75 μM. Then, the slides were prepared for scoring unstable chromosome aberrations (dicentrics, rings, and fragments). The results showed that the lymphocytes irradiated and later exposed to quercetin presented a lower frequency of chromosomal alterations compared to the control sample which was irradiated and not exposed to quercetin. The results suggest a potential radiomitigator effect of the flavonoid quercetin on human lymphocytes exposed, in vitro, to ionizing radiation. This effect may be related to decrease in the release of cytokines (INF-γ, PGE2, IL-1β, IL6, IL-8) involved in the proinflammatory processes as well as downregulation of NF-kB and reduction of expression TGF-β.
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Affiliation(s)
- Williams Nascimento de Siqueira
- Departamento de Biofísica e Radiobiologia, Universidade Federal de Pernambuco, Recife, Pernambuco, 50670-901, Brazil.
- Departamento de Energia Nuclear, Universidade Federal de Pernambuco, Recife, Pernambuco, 50740-540, Brazil.
- Serviço de Monitoração Ambiental, Centro Regional de Ciências Nucleares do Nordeste, Recife, Pernambuco, 50740-540, Brazil.
| | - Felipe Tiago José Dos Santos
- Departamento de Biofísica e Radiobiologia, Universidade Federal de Pernambuco, Recife, Pernambuco, 50670-901, Brazil
- Departamento de Energia Nuclear, Universidade Federal de Pernambuco, Recife, Pernambuco, 50740-540, Brazil
| | - Thaísa Feliciano de Souza
- Departamento de Energia Nuclear, Universidade Federal de Pernambuco, Recife, Pernambuco, 50740-540, Brazil
| | - Maíra de Vasconcelos Lima
- Departamento de Biofísica e Radiobiologia, Universidade Federal de Pernambuco, Recife, Pernambuco, 50670-901, Brazil
- Serviço de Monitoração Ambiental, Centro Regional de Ciências Nucleares do Nordeste, Recife, Pernambuco, 50740-540, Brazil
| | | | | | - Maira Galdino da Rocha Pitta
- Laboratório de Imunomodulação e Novas Abordagens Terapêuticas, Universidade Federal de Pernambuco, Recife, Pernambuco, 50670-901, Brazil
| | | | - Thiago de Salazar E Fernandes
- Departamento de Biofísica e Radiobiologia, Universidade Federal de Pernambuco, Recife, Pernambuco, 50670-901, Brazil
| | - Elvis Joacir de França
- Departamento de Energia Nuclear, Universidade Federal de Pernambuco, Recife, Pernambuco, 50740-540, Brazil
- Serviço de Monitoração Ambiental, Centro Regional de Ciências Nucleares do Nordeste, Recife, Pernambuco, 50740-540, Brazil
| | - Edvane Borges da Silva
- Departamento de Energia Nuclear, Universidade Federal de Pernambuco, Recife, Pernambuco, 50740-540, Brazil
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Mulinacci N, Valletta A, Pasqualetti V, Innocenti M, Giuliani C, Bellumori M, De Angelis G, Carnevale A, Locato V, Di Venanzio C, De Gara L, Pasqua G. Effects of ionizing radiation on bio-active plant extracts useful for preventing oxidative damages. Nat Prod Res 2018; 33:1106-1114. [PMID: 29607691 DOI: 10.1080/14786419.2018.1457663] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
Humans are exposed to ionizing radiations in medical radiodiagnosis and radiotherapy that cause oxidative damages and degenerative diseases. Airplane pilots, and even more astronauts, are exposed to a variety of potentially harmful factors, including cosmic radiations. Among the phytochemicals, phenols are particularly efficient in countering the oxidative stress. In the present study, different extracts obtained from plant food, plant by-products and dietary supplements, have been compared for their antioxidant properties before and after irradiation of 140 cGy, a dose absorbed during a hypothetical stay of three years in the space. All the dry extracts, characterized in terms of vitamin C and phenolic content, remained chemically unaltered and maintained their antioxidant capability after irradiation. Our results suggest the potential use of these extracts as nutraceuticals to protect humans from oxidative damages, even when these extracts must be stored in an environment exposed to cosmic radiations as in a space station.
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Affiliation(s)
- Nadia Mulinacci
- a Department of Neurofarba, Pharmaceutical and Nutraceutical Division , University of Florence , Sesto Fiorentino , Italy
| | - Alessio Valletta
- b Department of Environmental Biology , La Sapienza University of Rome , Rome , Italy
| | - Valentina Pasqualetti
- c Unit of Food Science and Human Nutrition, Department of Medicine , Campus Bio-Medico University of Rome , Rome , Italy
| | - Marzia Innocenti
- a Department of Neurofarba, Pharmaceutical and Nutraceutical Division , University of Florence , Sesto Fiorentino , Italy
| | - Camilla Giuliani
- a Department of Neurofarba, Pharmaceutical and Nutraceutical Division , University of Florence , Sesto Fiorentino , Italy
| | - Maria Bellumori
- a Department of Neurofarba, Pharmaceutical and Nutraceutical Division , University of Florence , Sesto Fiorentino , Italy
| | - Giulia De Angelis
- b Department of Environmental Biology , La Sapienza University of Rome , Rome , Italy
| | - Alessia Carnevale
- d Unit of Radiotherapy, Department of Medicine , Campus Bio-Medico University of Rome , Rome , Italy
| | - Vittoria Locato
- c Unit of Food Science and Human Nutrition, Department of Medicine , Campus Bio-Medico University of Rome , Rome , Italy
| | - Cristina Di Venanzio
- d Unit of Radiotherapy, Department of Medicine , Campus Bio-Medico University of Rome , Rome , Italy
| | - Laura De Gara
- c Unit of Food Science and Human Nutrition, Department of Medicine , Campus Bio-Medico University of Rome , Rome , Italy
| | - Gabriella Pasqua
- b Department of Environmental Biology , La Sapienza University of Rome , Rome , Italy
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Cho J, Bing SJ, Kim A, Lee NH, Byeon SH, Kim GO, Jee Y. Beetroot (Beta vulgaris) rescues mice from γ-ray irradiation by accelerating hematopoiesis and curtailing immunosuppression. PHARMACEUTICAL BIOLOGY 2017; 55:306-319. [PMID: 27927068 PMCID: PMC6130760 DOI: 10.1080/13880209.2016.1237976] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Revised: 08/12/2016] [Accepted: 09/09/2016] [Indexed: 06/06/2023]
Abstract
CONTEXT Beetroot [Beta vulgaris Linné (Chenopodiaceae)], a vegetable usually consumed as a food or a medicinal plant in Europe, has been reported to have antioxidant and anti-inflammatory properties. Since the lymphohematopoietic system is the most sensitive tissue to ionizing radiation, protecting it from radiation damage is one of the best ways to decrease detrimental effects from radiation exposure. OBJECTIVE In this study, we evaluated the radio-protective effects of beetroot in hematopoietic stem cells (HSCs) and progenitor cells. MATERIALS AND METHODS Beetroot extract was administered at a dose of 400 mg/mouse per os (p.o.) three times into C57BL/6 mice and, at day 10 after γ-ray irradiation, diverse molecular presentations were measured and compared against non-irradiated and irradiated mice with PBS treatments. Survival of beetroot-fed and unfed irradiated animal was also compared. RESULTS Beetroot not only stimulated cell proliferation, but also minimized DNA damage of splenocytes. Beetroot also repopulated S-phase cells and increased Ki-67 or c-Kit positive cells in bone marrow. Moreover, beetroot-treated mice showed notable boosting of differentiation of HSCs into burst-forming units-erythroid along with increased production of IL-3. Also, beetroot-treated mice displayed enhancement in the level of hematocrit and hemoglobin as well as the number of red blood cell in peripheral blood. Beetroot diet improved survival rate of lethally exposed mice with a dose reduction factor (DRF) of 1.1. DISCUSSION AND CONCLUSION These results suggest that beetroot has the potency to preserve bone marrow integrity and stimulate the differentiation of HSCs against ionizing radiation.
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Affiliation(s)
- Jinhee Cho
- Department of Veterinary Medicine and Veterinary Medical Research Institute, Jeju National University, Jeju, Republic of Korea
| | - So Jin Bing
- Department of Veterinary Medicine and Veterinary Medical Research Institute, Jeju National University, Jeju, Republic of Korea
| | - Areum Kim
- Department of Advanced Convergence Technology & Science, Jeju National University, Jeju, Republic of Korea
| | - Nam Ho Lee
- Department of Chemistry, Jeju National University, Jeju, Republic of Korea
| | - Sang-Hee Byeon
- Department of Chemistry, Jeju National University, Jeju, Republic of Korea
| | - Gi-Ok Kim
- Jeju Diversity Research Institute, Seogwipo, Republic of Korea
| | - Youngheun Jee
- Department of Veterinary Medicine and Veterinary Medical Research Institute, Jeju National University, Jeju, Republic of Korea
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12
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Protection against Radiotherapy-Induced Toxicity. Antioxidants (Basel) 2016; 5:antiox5030022. [PMID: 27399787 PMCID: PMC5039571 DOI: 10.3390/antiox5030022] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Revised: 06/27/2016] [Accepted: 06/28/2016] [Indexed: 01/18/2023] Open
Abstract
Radiation therapy is a highly utilized therapy in the treatment of malignancies with up to 60% of cancer patients receiving radiation therapy as a part of their treatment regimen. Radiation therapy does, however, cause a wide range of adverse effects that can be severe and cause permanent damage to the patient. In an attempt to minimize these effects, a small number of compounds have been identified and are in use clinically for the prevention and treatment of radiation associated toxicities. Furthermore, there are a number of emerging therapies being developed for use as agents that protect against radiation-induced toxicities. The aim of this review was to evaluate and summarise the evidence that exists for both the known radioprotectant agents and the agents that show promise as future radioprotectant agents.
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Mukherjee S, Ghosh S, Das DK, Chakraborty P, Choudhury S, Gupta P, Adhikary A, Dey S, Chattopadhyay S. Gold-conjugated green tea nanoparticles for enhanced anti-tumor activities and hepatoprotection--synthesis, characterization and in vitro evaluation. J Nutr Biochem 2015; 26:1283-97. [PMID: 26310506 DOI: 10.1016/j.jnutbio.2015.06.003] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 06/03/2015] [Accepted: 06/10/2015] [Indexed: 01/03/2023]
Abstract
Green tea (GT)-based chemoprevention has shown promising results in various cancer models. However, the effective dose may not be far from the toxic dose because of inefficient systemic delivery and limited bio-availability of GT polyphenols. We have used GT polyphenols to successfully reduce gold to corresponding gold nanoparticles (NPs) in a single step; a process that fulfils all criteria of green nanotechnology as no "man-made" chemical other than gold acids are used. GT and (-) - epigallocatechin-3-gallate (EGCG) conjugated gold NPs (diameters <50 nm), showed remarkable stability, significantly rapid cellular uptake and excellent in vitro anti-oxidant activities. These NPs were observed to be selectively toxic towards cancer cells (Ehrlich's Ascites Carcinoma and MCF-7) while showing absolutely no lethality towards normal primary mouse hepatocytes. In cancer cells, NPs altered the redox status and limited Nrf2 activation by almost 50%. These NPs significantly decreased nuclear translocation of NF-κB, coupled with decreased phosphorylation of IĸB and down-regulation of NF-κB-dependent anti-apoptotic proteins Bcl2 and Akt in a dose-dependent manner, triggering onset of apoptosis. Culturing normal hepatocytes with tumor-conditioned media prompted apoptosis by increasing reactive oxygen species (ROS) and depleting the anti-oxidant defense mechanism of hepatocytes. Pre-treatment with NPs protected hepatocytes from tumor-induced cellular damage by scavenging excess ROS, increasing the levels of reduced glutathione and anti-oxidant enzymes. There was evidence of decreased Bax/Bcl2 ratio and active Caspase 3 levels in these hepatocytes, indicating apoptosis escape. Nanoformulations of GT-based polyphenols might serve as an operative platform for effective delivery, increased bio-availability, enhanced effects and minimal chemotherapy-associated toxicities.
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Affiliation(s)
- Sudeshna Mukherjee
- Department of Physiology, University of Calcutta; UCSTA, 92, Acharya Prafulla Chandra Road, Kolkata-700009, India
| | - Sayan Ghosh
- Department of Physiology, University of Calcutta; UCSTA, 92, Acharya Prafulla Chandra Road, Kolkata-700009, India
| | - Dipesh Kr Das
- Department of Physiology, University of Calcutta; UCSTA, 92, Acharya Prafulla Chandra Road, Kolkata-700009, India
| | - Priyanka Chakraborty
- Department of Physiology, University of Calcutta; UCSTA, 92, Acharya Prafulla Chandra Road, Kolkata-700009, India
| | - Sreetama Choudhury
- Department of Physiology, University of Calcutta; UCSTA, 92, Acharya Prafulla Chandra Road, Kolkata-700009, India
| | - Payal Gupta
- Department of Physiology, University of Calcutta; UCSTA, 92, Acharya Prafulla Chandra Road, Kolkata-700009, India
| | - Arghya Adhikary
- Centre for Research in Nanoscience and Nanotechnology, University of Calcutta, JD-2, Salt Lake, Sector III, Kolkata-700098, India
| | - Sanjit Dey
- Department of Physiology, University of Calcutta; UCSTA, 92, Acharya Prafulla Chandra Road, Kolkata-700009, India; Centre for Research in Nanoscience and Nanotechnology, University of Calcutta, JD-2, Salt Lake, Sector III, Kolkata-700098, India
| | - Sreya Chattopadhyay
- Department of Physiology, University of Calcutta; UCSTA, 92, Acharya Prafulla Chandra Road, Kolkata-700009, India; Centre for Research in Nanoscience and Nanotechnology, University of Calcutta, JD-2, Salt Lake, Sector III, Kolkata-700098, India.
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Ghosh D, Dey SK, Saha C. Antagonistic effects of black tea against gamma radiation-induced oxidative damage to normal lymphocytes in comparison with cancerous K562 cells. RADIATION AND ENVIRONMENTAL BIOPHYSICS 2014; 53:695-704. [PMID: 24981250 DOI: 10.1007/s00411-014-0551-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2014] [Accepted: 06/05/2014] [Indexed: 06/03/2023]
Abstract
The potential of naturally occurring antioxidants to reduce the cellular oxidative damage induced by ionizing radiation has been studied for more than a decade for their pharmacological application during cancer treatment. It is already known that radioprotective efficacy of phytochemicals might influence various end points of radiation damage. Flavonoids are well-known natural radioprotectors, and their biological effects depend upon their chemical structure. In the present study, radioprotective effect of black tea rich in flavonoids was evaluated against gamma radiation-induced oxidative damage on normal lymphocytes and compared with erythroleukemic K562 cells. Pre-treatment with black tea extract (BTE) significantly reduced radiation-induced loss of cell viability, generation of reactive oxygen species, mitochondrial dysfunction, activation of caspase-3 and apoptosis in normal lymphocytes compared to K562 cells. BTE also regulates the activity of endogenous antioxidant enzymes. The changes in the mRNA expression of bax, bcl2, p53 and Nrf2 were also followed to evaluate regulation of radiation-induced apoptosis by BTE. These findings suggest that black tea may have the potential of a natural radioprotective agent which can be used as adjunct with radiation during cancer treatment.
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Affiliation(s)
- Debjani Ghosh
- School of Biotechnology and Biological Sciences, West Bengal University of Technology, BF-142, Sector I, Salt Lake, Kolkata, 700064, India
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15
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Pal S, Dey SK, Saha C. Inhibition of catalase by tea catechins in free and cellular state: a biophysical approach. PLoS One 2014; 9:e102460. [PMID: 25025898 PMCID: PMC4099323 DOI: 10.1371/journal.pone.0102460] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Accepted: 06/19/2014] [Indexed: 01/04/2023] Open
Abstract
Tea flavonoids bind to variety of enzymes and inhibit their activities. In the present study, binding and inhibition of catalase activity by catechins with respect to their structure-affinity relationship has been elucidated. Fluorimetrically determined binding constants for (-)-epigallocatechin gallate (EGCG) and (-)-epicatechin gallate (ECG) with catalase were observed to be 2.27×106 M(-1) and 1.66×106 M(-1), respectively. Thermodynamic parameters evidence exothermic and spontaneous interaction between catechins and catalase. Major forces of interaction are suggested to be through hydrogen bonding along with electrostatic contributions and conformational changes. Distinct loss of α-helical structure of catalase by interaction with EGCG was captured in circular dichroism (CD) spectra. Gallated catechins demonstrated higher binding constants and inhibition efficacy than non-gallated catechins. EGCG exhibited maximum inhibition of pure catalase. It also inhibited cellular catalase in K562 cancer cells with significant increase in cellular ROS and suppression of cell viability (IC50 54.5 µM). These results decipher the molecular mechanism by which tea catechins interact with catalase and highlight the potential of gallated catechin like EGCG as an anticancer drug. EGCG may have other non-specific targets in the cell, but its anticancer property is mainly defined by ROS accumulation due to catalase inhibition.
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Affiliation(s)
- Sandip Pal
- Department of Biotechnology, West Bengal University of Technology, Kolkata, West Bengal, India
| | - Subrata Kumar Dey
- Department of Biotechnology, West Bengal University of Technology, Kolkata, West Bengal, India
| | - Chabita Saha
- Department of Biotechnology, West Bengal University of Technology, Kolkata, West Bengal, India
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16
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Kma L. Plant Extracts and Plant-Derived Compounds: Promising Players in Countermeasure Strategy Against Radiological Exposure: A Review. Asian Pac J Cancer Prev 2014; 15:2405-25. [DOI: 10.7314/apjcp.2014.15.6.2405] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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17
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Hosseinimehr SJ. Beneficial effects of natural products on cells during ionizing radiation. REVIEWS ON ENVIRONMENTAL HEALTH 2014; 29:341-353. [PMID: 24695025 DOI: 10.1515/reveh-2014-0037] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Accepted: 02/27/2014] [Indexed: 06/03/2023]
Abstract
Natural products like vegetables, fruits, and herbs are widely consumed by humans on a daily basis. These natural products have many biologic and pharmacologic properties. Ionizing radiation (IR) can interact with macromolecules like DNA, which induces serious side effects on cells and tissues. Natural products can directly scavenge free radicals produced by IR, and they can also activate or inhibit enzymes or proteins involved in the oxidative stress. Several natural products have dual biologic effects on normal and cancer cells during radiation and might be of interest for use in patients during radiotherapy. In this review, the effects of natural products on genotoxicity and cell death induced by IR were reviewed and some potentiated compounds were discussed.
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Affiliation(s)
- Seyed Jalal Hosseinimehr
- Department of Radiopharmacy, Faculty of Pharmacy, Traditional and Complementary Medicine Research Center, Mazandaran University of Medical Sciences, Sari 48175-861, Iran.
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18
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Pal S, Saha C. A review on structure–affinity relationship of dietary flavonoids with serum albumins. J Biomol Struct Dyn 2013; 32:1132-47. [DOI: 10.1080/07391102.2013.811700] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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