251
|
Narasimhan M, Hong J, Atieno N, Muthusamy VR, Davidson CJ, Abu-Rmaileh N, Richardson RS, Gomes AV, Hoidal JR, Rajasekaran NS. Nrf2 deficiency promotes apoptosis and impairs PAX7/MyoD expression in aging skeletal muscle cells. Free Radic Biol Med 2014; 71:402-414. [PMID: 24613379 PMCID: PMC4493911 DOI: 10.1016/j.freeradbiomed.2014.02.023] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2013] [Revised: 02/17/2014] [Accepted: 02/25/2014] [Indexed: 12/20/2022]
Abstract
Skeletal muscle redox homeostasis is transcriptionally regulated by nuclear erythroid-2-p45-related factor-2 (Nrf2). We recently demonstrated that age-associated stress impairs Nrf2-ARE (antioxidant-response element) transcriptional signaling. Here, we hypothesize that age-dependent decline or genetic ablation of Nrf2 leads to accelerated apoptosis and skeletal muscle degeneration. Under basal-physiological conditions, disruption of Nrf2 significantly downregulates antioxidants and causes oxidative stress. Surprisingly, Nrf2-null mice had enhanced antioxidant capacity identical to wild-type (WT) upon acute endurance exercise stress (AEES), suggesting activation of Nrf2-independent mechanisms (i.e., PGC1α) against oxidative stress. Analysis of prosurvival pathways in the basal state reveals decreased AKT levels, whereas p-p53, a repressor of AKT, was increased in Nrf2-null vs WT mice. Upon AEES, AKT and p-AKT levels were significantly (p < 0.001) increased (>10-fold) along with profound downregulation of p-p53 (p < 0.01) in Nrf2-null vs WT skeletal muscle, indicating the onset of prosurvival mechanisms to compensate for the loss of Nrf2 signaling. However, we found a decreased stem cell population (PAX7) and MyoD expression (differentiation) along with profound activation of ubiquitin and apoptotic pathways in Nrf2-null vs WT mice upon AEES, suggesting that compensatory prosurvival mechanisms failed to overcome the programmed cell death and degeneration in skeletal muscle. Further, the impaired regeneration was sustained in Nrf2-null vs WT mice after 1 week of post-AEES recovery. In an age-associated oxidative stress condition, ablation of Nrf2 results in induction of apoptosis and impaired muscle regeneration.
Collapse
Affiliation(s)
- Madhusudhanan Narasimhan
- Department of Pharmacology and Neuroscience, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA; Cardiac Aging and Redox Signaling Laboratory, Division of Cardiology, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT 84132, USA
| | - Jennifer Hong
- Cardiac Aging and Redox Signaling Laboratory, Division of Cardiology, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT 84132, USA
| | - Nancy Atieno
- Cardiac Aging and Redox Signaling Laboratory, Division of Cardiology, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT 84132, USA
| | - Vasanthi R Muthusamy
- Cardiac Aging and Redox Signaling Laboratory, Division of Cardiology, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT 84132, USA
| | - Christopher J Davidson
- Cardiac Aging and Redox Signaling Laboratory, Division of Cardiology, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT 84132, USA
| | - Naser Abu-Rmaileh
- Cardiac Aging and Redox Signaling Laboratory, Division of Cardiology, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT 84132, USA
| | - Russell S Richardson
- Division of Geriatrics, and Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT 84132, USA; Department of Exercise & Sports Sciences, College of Health, University of Utah, Salt Lake City, UT 84112, USA; Geriatric Research, Education, and Clinical Center, Salt Lake City Veteran's Medical Center
| | | | - John R Hoidal
- Division of Pulmonary Medicine, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT 84132, USA
| | - Namakkal S Rajasekaran
- Cardiac Aging and Redox Signaling Laboratory, Division of Cardiology, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT 84132, USA; Department of Exercise & Sports Sciences, College of Health, University of Utah, Salt Lake City, UT 84112, USA.
| |
Collapse
|
252
|
Li L, Leung PS. Use of herbal medicines and natural products: an alternative approach to overcoming the apoptotic resistance of pancreatic cancer. Int J Biochem Cell Biol 2014; 53:224-36. [PMID: 24875648 DOI: 10.1016/j.biocel.2014.05.021] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Revised: 05/08/2014] [Accepted: 05/16/2014] [Indexed: 02/07/2023]
Abstract
Pancreatic cancer has a poor prognosis with a 5-year survival rate of <5%. It does not respond well to either chemotherapy or radiotherapy, due partly to apoptotic resistance (AR) of the cancer cells. AR has been attributed to certain genetic abnormalities or defects in apoptotic signaling pathways. In pancreatic cancer, significant mutations of K-ras and p53, constitutive activation of NFκB, over-expression of heat shock proteins (Hsp90, Hsp70), histone deacetylase (HDACs) and the activities of other proteins (COX-2, Nrf2 and bcl-2 family members) are closely linked with resistance to apoptosis and invasion. AR has also been associated with aberrant signaling of MAPK, PI3K-AKT, JAK/STAT, SHH, Notch, and Wnt/β-catenin pathways. Strategies targeting these signaling molecules and pathways provide an alternative for overcoming AR in pancreatic cancer. The use of herbal medicines or natural products (HM/NPs) alone or in combination with conventional anti-cancer agents has been shown to produce beneficial effects through actions upon multiple molecular pathways involved in AR. The current standard first-line chemotherapeutic agents for pancreatic cancer are gemcitabine (Gem) or Gem-containing combinations; however, the efficacy is dissatisfied and this limitation is largely attributed to AR. Meanwhile, emerging data have pointed to a combination of HM/NPs that may augment the sensitivity of pancreatic cancer cells to Gem. Greater understanding of how these compounds affect the molecular mechanisms of apoptosis may propel development of HM/NPs as anti-cancer agents and/or adjuvant therapies forward. In this review, we give a critical appraisal of the use of HM/NPs alone and in combination with anti-cancer drugs. We also discuss the potential regulatory mechanisms whereby AR is involved in these protective pathways.
Collapse
Affiliation(s)
- Lin Li
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong
| | - Po Sing Leung
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong.
| |
Collapse
|
253
|
Liu QR, Liu JM, Chen Y, Xie XQ, Xiong XX, Qiu XY, Pan F, Liu D, Yu SB, Chen XQ. Piperlongumine inhibits migration of glioblastoma cells via activation of ROS-dependent p38 and JNK signaling pathways. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2014; 2014:653732. [PMID: 24967005 PMCID: PMC4055624 DOI: 10.1155/2014/653732] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Revised: 04/21/2014] [Accepted: 04/25/2014] [Indexed: 02/07/2023]
Abstract
Piperlongumine (PL) is recently found to kill cancer cells selectively and effectively via targeting reactive oxygen species (ROS) responses. To further explore the therapeutic effects of PL in cancers, we investigated the role and mechanisms of PL in cancer cell migration. PL effectively inhibited the migration of human glioma (LN229 or U87 MG) cells but not normal astrocytes in the scratch-wound culture model. PL did not alter EdU(+)-cells and cdc2, cdc25c, or cyclin D1 expression in our model. PL increased ROS (measured by DCFH-DA), reduced glutathione, activated p38 and JNK, increased IκBα, and suppressed NFκB in LN229 cells after scratching. All the biological effects of PL in scratched LN229 cells were completely abolished by the antioxidant N-acetyl-L-cysteine (NAC). Pharmacological administration of specific p38 (SB203580) or JNK (SP600125) inhibitors significantly reduced the inhibitory effects of PL on LN229 cell migration and NF κ B activity in scratch-wound and/or transwell models. PL prevented the deformation of migrated LN229 cells while NAC, SB203580, or SP600125 reversed PL-induced morphological changes of migrated cells. These results suggest potential therapeutic effects of PL in the treatment and prevention of highly malignant tumors such as glioblastoma multiforme (GBM) in the brain by suppressing tumor invasion and metastasis.
Collapse
Affiliation(s)
- Qian Rong Liu
- Department of Pathophysiology, School of Basic Medicine, Key Laboratory of Neurological Diseases, Ministry of Education and Hubei Provincial Key Laboratory of Neurological Diseases, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Ju Mei Liu
- Department of Pathophysiology, School of Basic Medicine, Key Laboratory of Neurological Diseases, Ministry of Education and Hubei Provincial Key Laboratory of Neurological Diseases, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yong Chen
- Department of Pathophysiology, School of Basic Medicine, Key Laboratory of Neurological Diseases, Ministry of Education and Hubei Provincial Key Laboratory of Neurological Diseases, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Xiao Qiang Xie
- Department of Pathophysiology, School of Basic Medicine, Key Laboratory of Neurological Diseases, Ministry of Education and Hubei Provincial Key Laboratory of Neurological Diseases, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Xin Xin Xiong
- Department of Pathophysiology, School of Basic Medicine, Key Laboratory of Neurological Diseases, Ministry of Education and Hubei Provincial Key Laboratory of Neurological Diseases, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Xin Yao Qiu
- Department of Pathophysiology, School of Basic Medicine, Key Laboratory of Neurological Diseases, Ministry of Education and Hubei Provincial Key Laboratory of Neurological Diseases, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Feng Pan
- Department of Pathophysiology, School of Basic Medicine, Key Laboratory of Neurological Diseases, Ministry of Education and Hubei Provincial Key Laboratory of Neurological Diseases, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
- Department of Urology, Union Hospital, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Di Liu
- Department of Urology, Union Hospital, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Shang Bin Yu
- Department of Pathophysiology, School of Basic Medicine, Key Laboratory of Neurological Diseases, Ministry of Education and Hubei Provincial Key Laboratory of Neurological Diseases, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Xiao Qian Chen
- Department of Pathophysiology, School of Basic Medicine, Key Laboratory of Neurological Diseases, Ministry of Education and Hubei Provincial Key Laboratory of Neurological Diseases, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| |
Collapse
|
254
|
Interactions among mitochondrial proteins altered in glioblastoma. J Neurooncol 2014; 118:247-256. [PMID: 24728830 PMCID: PMC4048470 DOI: 10.1007/s11060-014-1430-5] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Accepted: 03/29/2014] [Indexed: 11/04/2022]
Abstract
Mitochondrial dysfunction is putatively central to glioblastoma (GBM) pathophysiology but there has been no systematic analysis in GBM of the proteins which are integral to mitochondrial function. Alterations in proteins in mitochondrial enriched fractions from patients with GBM were defined with label-free liquid chromatography mass spectrometry. 256 mitochondrially-associated proteins were identified in mitochondrial enriched fractions and 117 of these mitochondrial proteins were markedly (fold-change ≥2) and significantly altered in GBM (p ≤ 0.05). Proteins associated with oxidative damage (including catalase, superoxide dismutase 2, peroxiredoxin 1 and peroxiredoxin 4) were increased in GBM. Protein–protein interaction analysis highlighted a reduction in multiple proteins coupled to energy metabolism (in particular respiratory chain proteins, including 23 complex-I proteins). Qualitative ultrastructural analysis in GBM with electron microscopy showed a notably higher prevalence of mitochondria with cristolysis in GBM. This study highlights the complex mitochondrial proteomic adjustments which occur in GBM pathophysiology.
Collapse
|
255
|
Serban DE. Gastrointestinal cancers: influence of gut microbiota, probiotics and prebiotics. Cancer Lett 2014; 345:258-70. [PMID: 23981580 DOI: 10.1016/j.canlet.2013.08.013] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Revised: 08/08/2013] [Accepted: 08/13/2013] [Indexed: 02/07/2023]
Abstract
Cancers of the gastrointestinal (GI) tract continue to represent a major health problem, despite progress in therapy. Gut microbiota is a key element related to the genesis of GI cancers, countless papers addressing this burning issue across the world. We provide an updated knowledge of the involvement of gut microbiota in GI tumorigenesis, including its underlying mechanisms. We present also a comprehensive review of the evidence from animal and clinical studies using probiotics and/or prebiotics in the prevention and/or therapy of GI tumours, of GI cancer therapy-related toxicity and of post-operative complications. We summarize the anticarcinogenic mechanisms of these biotherapeutics from in vitro, animal and clinical interventions. More research is required to reveal the interactions of microflora with genetic, epigenetic and immunologic factors, diet and age, before any firm conclusion be drawn. Well-designed, randomized, double blind, placebo-controlled human studies using probiotics and/or prebiotics, with adequate follow-up are necessary in order to formulate directions for prevention and therapy.
Collapse
Affiliation(s)
- Daniela Elena Serban
- "Iuliu Hatieganu" University of Medicine and Pharmacy, Second Pediatric Clinic, Emergency Children's Hospital, Cluj-Napoca, Romania.
| |
Collapse
|
256
|
Yi YW, Kang HJ, Bae I. BRCA1 and Oxidative Stress. Cancers (Basel) 2014; 6:771-95. [PMID: 24704793 PMCID: PMC4074803 DOI: 10.3390/cancers6020771] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Revised: 03/20/2014] [Accepted: 03/24/2014] [Indexed: 01/07/2023] Open
Abstract
The breast cancer susceptibility gene 1 (BRCA1) has been well established as a tumor suppressor and functions primarily by maintaining genome integrity. Genome stability is compromised when cells are exposed to oxidative stress. Increasing evidence suggests that BRCA1 regulates oxidative stress and this may be another mechanism in preventing carcinogenesis in normal cells. Oxidative stress caused by reactive oxygen species (ROS) is implicated in carcinogenesis and is used strategically to treat human cancer. Thus, it is essential to understand the function of BRCA1 in oxidative stress regulation. In this review, we briefly summarize BRCA1's many binding partners and mechanisms, and discuss data supporting the function of BRCA1 in oxidative stress regulation. Finally, we consider its significance in prevention and/or treatment of BRCA1-related cancers.
Collapse
Affiliation(s)
- Yong Weon Yi
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA.
| | - Hyo Jin Kang
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA.
| | - Insoo Bae
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA.
| |
Collapse
|
257
|
Ilmer M, Vykoukal J, Boiles AR, Coleman M, Alt E. Two sides of the same coin: stem cells in cancer and regenerative medicine. FASEB J 2014; 28:2748-61. [DOI: 10.1096/fj.13-244640] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Matthias Ilmer
- Department of Translational Molecular PathologyThe University of Texas M. D. Anderson Cancer CenterHoustonTexasUSA
| | - Jody Vykoukal
- Department of Translational Molecular PathologyThe University of Texas M. D. Anderson Cancer CenterHoustonTexasUSA
| | - Alejandro Recio Boiles
- Department of Translational Molecular PathologyThe University of Texas M. D. Anderson Cancer CenterHoustonTexasUSA
| | | | - Eckhard Alt
- Center for Stem Cell and Developmental BiologyThe University of Texas M. D. Anderson Cancer CenterHoustonTexasUSA
- Applied Stem Cell Laboratory, Heart and Vascular InstituteDepartment of MedicineTulane University Health Science CenterNew OrleansLouisianaUSA
| |
Collapse
|
258
|
Vuong QV, Hirun S, Phillips PA, Chuen TLK, Bowyer MC, Goldsmith CD, Scarlett CJ. Fruit-derived phenolic compounds and pancreatic cancer: perspectives from Australian native fruits. JOURNAL OF ETHNOPHARMACOLOGY 2014; 152:227-242. [PMID: 24463158 DOI: 10.1016/j.jep.2013.12.023] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Revised: 12/09/2013] [Accepted: 12/11/2013] [Indexed: 06/03/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Pancreatic cancer is a devastating cancer that presents late, is rapidly progressive and has current therapeutics with only limited efficacy. Bioactive compounds are ubiquitously present in fruits and numerous studies in vitro are addressing the activity of these compounds against pancreatic cancer, thus studies of specific bioactive compounds could lead to new anti-pancreatic cancer strategies. Australian native fruits have been used as foods and medicines by Australian Aboriginals for thousands of years, and preliminary studies have found these fruits to contain rich and diversified bioactive components with high antioxidant activity. Thus, Australian native fruits may possess key components for preventing or delaying the onset of tumorigenesis, or for the treatment of existing cancers, including pancreatic cancer. MATERIALS AND METHODS Numerous databases including PubMed, SciFinder, Web of Knowledge, Scopus, and Sciencedirect were analysed for correlations between bioactive components from fruits and pancreatic cancer, as well as studies concerning Australian native fruits. RESULTS In this review, we comprehensively highlight the proposed mechanisms of action of fruit bioactives as anti-cancer agents, update the potential anti-pancreatic cancer activity of various major classes of bioactive compounds derived from fruits, and discuss the existence of bioactive compounds identified from a selection Australian native fruits for future studies. CONCLUSION Bioactive compounds derived from fruits possess the potential for the discovery of new anti-pancreatic cancer strategies. Further, Australian native fruits are rich in polyphenols including some flora that contain unique phenolic compounds, thereby warranting further investigations into their anti-cancer properties.
Collapse
Affiliation(s)
- Q V Vuong
- Pancreatic Cancer Research, Nutrition Food & Health Research Group, Australia; School of Environmental and Life Sciences, University of Newcastle, NSW, Australia
| | - S Hirun
- Pancreatic Cancer Research, Nutrition Food & Health Research Group, Australia; School of Environmental and Life Sciences, University of Newcastle, NSW, Australia
| | - P A Phillips
- Pancreatic Cancer Translational Research Group, Lowy Cancer Research Centre, Prince of Wales Clinical School, Faculty of Medicine, The University of New South Wales, Sydney, Australia
| | - T L K Chuen
- Pancreatic Cancer Research, Nutrition Food & Health Research Group, Australia; School of Environmental and Life Sciences, University of Newcastle, NSW, Australia
| | - M C Bowyer
- Pancreatic Cancer Research, Nutrition Food & Health Research Group, Australia; School of Environmental and Life Sciences, University of Newcastle, NSW, Australia
| | - C D Goldsmith
- Pancreatic Cancer Research, Nutrition Food & Health Research Group, Australia; School of Environmental and Life Sciences, University of Newcastle, NSW, Australia
| | - C J Scarlett
- Pancreatic Cancer Research, Nutrition Food & Health Research Group, Australia; School of Environmental and Life Sciences, University of Newcastle, NSW, Australia; Cancer Research Program, Garvan Institute of Medical Research, Darlinghurst, NSW, Australia.
| |
Collapse
|
259
|
Yang Y, Cai X, Yang J, Sun X, Hu C, Yan Z, Xu X, Lu W, Wang X, Cao P. Chemoprevention of dietary digitoflavone on colitis-associated colon tumorigenesis through inducing Nrf2 signaling pathway and inhibition of inflammation. Mol Cancer 2014; 13:48. [PMID: 24602443 PMCID: PMC3973863 DOI: 10.1186/1476-4598-13-48] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Accepted: 03/01/2014] [Indexed: 12/12/2022] Open
Abstract
Background Nuclear factor-erythroid 2-related factor 2 (Nrf2) has emerged as a novel target for the prevention of colorectal cancer (CRC). Many chemopreventive compounds associated with Nrf2 activation are effective in preclinical systems and many on-going clinical trials are showing promising findings. In present study we evaluated the cytoprotective effect and chemopreventive properties of dietary digitoflavone. Method A cell based Antioxidant Response Element (ARE)-driven luciferase reporter system was applied to screen potential Nrf2 activators. Activation of Nrf2 by digitoflavone was confirmed through mRNA, protein and GSH level assay in Caco-2 cell line. The cytoprotective effect of digitoflavone was evaluated in H2O2-induced oxidative stress model and further signaling pathways analysis was used to determine the target of digitoflavone induced Nrf2 activation. An AOM-DSS induced colorectal cancer model was used to assess the chemopreventive effect of digitoflavone. Result Micromolarity (10 μM) level of digitoflavone increased Nrf2 expressing, nuclear translocation and expression of downstream phase II antioxidant enzymes. Furthermore, digitoflavone decreased H2O2-induced oxidative stress and cell death via p38 MAPK-Nrf2/ARE pathway. In vivo study, 50 mg/kg digitoflavone significantly reduced AOM-DSS induced tumor incidence, number and size. Conclusion These observations suggest that digitoflavone is a novel Nrf2 pathway activator, and protects against oxidative stress-induced cell injury. The results of the present study add further evidence of the molecular mechanisms that allow digitoflavone to exert protective effects and reaffirm its potential role as a chemopreventive agent in colorectal carcinogenesis.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | | | - Peng Cao
- Laboratory of Cellular and Molecular Biology, Jiangsu Province Institute of Traditional Chinese Medicine, 100#, Shizi Street, Hongshan Road, Nanjing 210028, Jiangsu, China.
| |
Collapse
|
260
|
Paulrasu K, Duraikannu A, Palrasu M, Shanmugasundaram A, Kuppusamy M, Thirunavukkarasu B. Synthesis of 4-methyl-N′-(3-alkyl-2r,6c-diarylpiperidin-4-ylidene)-1,2,3-thiadiazole-5-carbohydrazides with antioxidant, antitumor and antimicrobial activities. Org Biomol Chem 2014; 12:5911-21. [DOI: 10.1039/c4ob00739e] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The structures of the newly synthesized 4-methyl-N′-(3-alkyl-2r,6c-diarylpiperidin-4-ylidene)-1,2,3-thiadiazole-5-carbohydrazide (5a–5l) were confirmed by spectral and elemental analysis.
Collapse
Affiliation(s)
| | - Arul Duraikannu
- Department of Clinical Neurosciences
- University of Calgary
- Calgary, Canada
| | - Manikandan Palrasu
- Department of Pharmacology
- University of Maryland School of Medicine
- , Maryland 21201
| | | | | | | |
Collapse
|
261
|
Maria Zowczak-Drabarczyk M, Murawa D, Kaczmarek L, Połom K, Litwiniuk M. Total antioxidant status in plasma of breast cancer patients in relation to ERβ expression. Contemp Oncol (Pozn) 2013; 17:499-503. [PMID: 24592136 PMCID: PMC3934035 DOI: 10.5114/wo.2013.38782] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Revised: 10/24/2013] [Accepted: 11/05/2013] [Indexed: 01/08/2023] Open
Abstract
AIM OF THE STUDY The aim of this pilot study was to evaluate the plasma total antioxidant capacity (TAS) in breast cancer patients in relation to ERβ expression. MATERIAL AND METHODS The study group consisted of newly diagnosed consecutive female breast cancer patients (n = 41) and controls (n = 28) randomly selected from women with benign breast disease. TAS was determined with the ABTS reagent. Immunostaining for ERβ was performed using polyclonal antibodies. ERα, PgR and HER-2 were measured routinely (immunostaining for ERα and PgR with monoclonal antibodies and EnVision detection system; immunohistochemical method/FISH for HER-2 expression). RESULTS The plasma TAS was significantly decreased in the breast cancer patients in comparison to the controls independently of hormonal and lymph node status. The TAS level was not significantly different between breast cancer subgroups either in relation to the ERβ expression (ERβ+ vs. ERβ-) or considering the steroid receptor status (ERα+, ERβ+, Pg+ vs. ERα+, ERβ-, Pg+) even in the selected lymph node negative subgroup. Similarly, HER-2 expression did not significantly affect the TAS concentration. A tendency towards higher TAS level in all ERβ negative breast cancer subgroups was observed. CONCLUSIONS The results might confirm enhanced consumption of plasma antioxidants in breast cancer patients. The determination of ERβ isoforms along with parameters of redox status might enable better understanding of their mutual influence.
Collapse
Affiliation(s)
| | - Dawid Murawa
- 1 Department of Surgical Oncology and General Surgery, Greater Poland Cancer Center in Poznań, Poland
| | - Leszek Kaczmarek
- Department of General Surgery with Urological and Surgical Oncology Units, Medical Center in Pleszew, Poland
| | - Karol Połom
- 1 Department of Surgical Oncology and General Surgery, Greater Poland Cancer Center in Poznań, Poland
| | - Maria Litwiniuk
- Chemotherapy Department, Greater Poland Cancer Center, Poznan, Poland
| |
Collapse
|
262
|
Harris C, Shuster DZ, Roman Gomez R, Sant KE, Reed MS, Pohl J, Hansen JM. Inhibition of glutathione biosynthesis alters compartmental redox status and the thiol proteome in organogenesis-stage rat conceptuses. Free Radic Biol Med 2013; 63:325-37. [PMID: 23736079 PMCID: PMC3764921 DOI: 10.1016/j.freeradbiomed.2013.05.040] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Revised: 03/19/2013] [Accepted: 05/28/2013] [Indexed: 01/07/2023]
Abstract
Developmental signals that control growth and differentiation are regulated by environmental factors that generate reactive oxygen species (ROS) and alter steady-state redox environments in tissues and fluids. Protein thiols are selectively oxidized and reduced in distinct spatial and temporal patterns in conjunction with changes in glutathione/glutathione disulfide (GSH/GSSG) and cysteine/cystine (Cys/CySS) redox potentials (E(h)) to regulate developmental signaling. The purpose of this study was to measure compartment-specific thiol redox status in cultured organogenesis-stage rat conceptuses and to evaluate the impact of thiol oxidation on the redox proteome. The visceral yolk sac (VYS) has the highest initial (0 h) total intracellular GSH (GSH+2GSSG) concentration (5.5 mM) and the lowest Eh (-223 mV) as determined by HPLC analysis. Total embryo (EMB) GSH concentrations ranged lower (3.2 mM) and were only slightly more oxidized than the VYS. Total GSH concentrations in yolk sac fluid (YSF) and amniotic fluid (AF) are >500-fold lower than in tissues and are highly oxidized (YSF E(h)=-121 mV and AF E(h)=-49 mV). Steady-state total Cys concentrations (Cys+2CySS) were significantly lower than GSH in tissues but were otherwise equal in VYS and EMB near 0.5 mM. On gestational day 11, total GSH and Cys concentrations in EMB and VYS increase significantly over the 6h time course while E(h) remains relatively constant. The Eh (GSH/GSSG) in YSF and AF become more reduced over time while E(h) (Cys/CySS) become more oxidized. Addition of L-buthionine-S,R-sulfoximine (BS0) to selectively inhibit GSH synthesis and mimic the effects of some GSH-depleting environmental chemicals significantly decreased VYS and EMB GSH and Cys concentrations and increased Eh over the 6h exposure period, showing a greater overall oxidation. In the YSF, BSO caused a significant increase in total Cys concentrations to 1.7 mM but did not significantly change the E(h) for Cys/CySS. A significant net oxidation was seen in the BSO-treated AF compartment after 6 h. Biotinylated iodoacetamide (BIAM) labeling of proteins revealed the significant thiol oxidation of many EMB proteins following BSO treatment. Quantitative changes in the thiol proteome, associated with developmentally relevant pathways, were detected using isotope coded affinity tag (ICAT) labeling and mass spectroscopy. Adaptive pathways were selectively enriched with increased concentrations of proteins involved in mRNA processing (splicesome) and mRNA stabilization (glycolysis, GAPDH), as well as protein synthesis (aminoacyl-tRNA) and protein folding (antigen processing, Hsp70, protein disulfide isomerase). These results show the ability of chemical and environmental modulators to selectively alter compartmental intracellular and extracellular GSH and Cys concentrations and change their corresponding E(h) within the intact viable conceptus. The altered E(h) were also of sufficient magnitude to alter the redox proteome and change relative protein concentrations, suggesting that the mechanistic links through which environmental factors inform and regulate developmental signaling pathways may be discovered using systems developmental biology techniques.
Collapse
Affiliation(s)
- Craig Harris
- Developmental Toxicology Laboratory, Department of Environmental Health Sciences, 1420 Washington Heights, University of Michigan, Ann Arbor, MI 48109-2029, USA.
| | | | | | | | | | | | | |
Collapse
|
263
|
Policastro LL, Ibañez IL, Notcovich C, Duran HA, Podhajcer OL. The tumor microenvironment: characterization, redox considerations, and novel approaches for reactive oxygen species-targeted gene therapy. Antioxid Redox Signal 2013; 19:854-95. [PMID: 22794113 DOI: 10.1089/ars.2011.4367] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The tumor microenvironment is a complex system that involves the interaction between malignant and neighbor stromal cells embedded in a mesh of extracellular matrix (ECM) components. Stromal cells (fibroblasts, endothelial, and inflammatory cells) are co-opted at different stages to help malignant cells invade the surrounding ECM and disseminate. Malignant cells have developed adaptive mechanisms to survive under the extreme conditions of the tumor microenvironment such as restricted oxygen supply (hypoxia), nutrient deprivation, and a prooxidant state among others. These conditions could be eventually used to target drugs that will be activated specifically in this microenvironment. Preclinical studies have shown that modulating cellular/tissue redox state by different gene therapy (GT) approaches was able to control tumor growth. In this review, we describe the most relevant features of the tumor microenvironment, addressing reactive oxygen species-generating sources that promote a prooxidative microenvironment inside the tumor mass. We describe different GT approaches that promote either a decreased or exacerbated prooxidative microenvironment, and those that make use of the differential levels of ROS between cancer and normal cells to achieve tumor growth inhibition.
Collapse
Affiliation(s)
- Lucia Laura Policastro
- Department of Micro and Nanotechnology, National Atomic Energy Commission, Buenos Aires 1650, Argentina.
| | | | | | | | | |
Collapse
|
264
|
Antognelli C, Mezzasoma L, Mearini E, Talesa VN. Glyoxalase 1-419C>A variant is associated with oxidative stress: implications in prostate cancer progression. PLoS One 2013; 8:e74014. [PMID: 24040147 PMCID: PMC3769356 DOI: 10.1371/journal.pone.0074014] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Accepted: 07/26/2013] [Indexed: 11/19/2022] Open
Abstract
Glyoxalase 1 is a scavenging enzyme of potent precursors in reactive oxygen species formation and is involved in the occurrence and progression of human malignancies. Glyoxalase I A111E polymorphism has been suggested to influence its enzymatic activity. The present study was aimed at investigating the association of this polymorphism with oxidative stress and its implications in prostate cancer progression or survival. The polymorphism was genotyped in human differently aggressive and invasive prostate cancer cell lines, in 571 prostate cancer or 588 benign prostatic hyperplasia patients, and 580 healthy subjects by Polymerase Chain Reaction/Restriction Fragment Length Polymorphism. Glyoxalase 1 activity, the pro-oxidant Glyoxalase 1-related Argpyrimidine and oxidative stress biomarkers were evaluated by biochemical analyses. Glyoxalase 1 polymorphism was associated with an increase in Glyoxalase 1-related pro-oxidant Argpyrimidine and oxidative stress levels and cancer progression. The mutant A allele conferred a modest risk of prostate cancer, a marked risk of prostate cancer progression and a lower survival time, compared to the wild C allele. The results of our exploratory study point out a significant role for Glyoxalase 1 in prostate cancer progression, providing an additional candidate for risk assessment in prostate cancer patients and an independent prognostic factor for survival. Finally, we provided evidence of the biological plausibility of Glyoxalase 1 polymorphism, either alone or in combination with other ones, all related to oxidative stress control that represents a key event in PCa development and progression.
Collapse
Affiliation(s)
- Cinzia Antognelli
- Department of Experimental Medicine and Biochemical Sciences, University of Perugia, Perugia, Italy
| | - Letizia Mezzasoma
- Department of Experimental Medicine and Biochemical Sciences, University of Perugia, Perugia, Italy
| | - Ettore Mearini
- Department of Medical-Surgical Specialties and Public Health, University of Perugia, Perugia, Italy
| | - Vincenzo Nicola Talesa
- Department of Experimental Medicine and Biochemical Sciences, University of Perugia, Perugia, Italy
- * E-mail:
| |
Collapse
|
265
|
Sun C, Zhang H, Ma XF, Zhou X, Gan L, Liu YY, Wang ZH. Isoliquiritigenin enhances radiosensitivity of HepG2 cells via disturbance of redox status. Cell Biochem Biophys 2013; 65:433-44. [PMID: 23086355 DOI: 10.1007/s12013-012-9447-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Redox balance plays an important role in the maintenance of cell growth and survival. Disturbance of this equilibrium can alter normal cellular processes. Excessive reactive oxygen species (ROS) are often found in cancer cells. However, cancer cells have an efficient antioxidant system to counteract the increased generation of ROS. This high antioxidant capacity also favors resistance to drugs and radiation. Here, we show that isoliquiritigenin (ISL), a natural antioxidant, effectively decreased ROS in HepG2 cells in a time-dependant manner at 0.5, 1, and 2 h of treatment. The decreased ROS caused redox imbalance and reductive stress. To adapt to this state, nuclear factor erythroid-2-related factor 2, which regulates the antioxidant enzyme system, was significantly decreased. Antioxidant enzymes reached their lowest level at 6 h after ISL treatment. Endogenous ROS were still being generated so after 6 h of ISL treatment, ROS were clearly higher than before ISL treatment, causing redox imbalance in the HepG2 cells which changed from reductive to oxidative stress. At this stage, cells were irradiated with X-rays. The excess ROS induced serious oxidative stress, resulting in radiosensitization. Therefore, we concluded that ISL induced oxidative stress by disturbing the redox status and ultimately enhancing the radiosensitivity of HepG2 cells.
Collapse
Affiliation(s)
- Chao Sun
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, People's Republic of China
| | | | | | | | | | | | | |
Collapse
|
266
|
D'evoli L, Morroni F, Lombardi-Boccia G, Lucarini M, Hrelia P, Cantelli-Forti G, Tarozzi A. Red chicory (Cichorium intybus L. cultivar) as a potential source of antioxidant anthocyanins for intestinal health. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2013; 2013:704310. [PMID: 24069504 PMCID: PMC3771420 DOI: 10.1155/2013/704310] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Accepted: 07/26/2013] [Indexed: 02/07/2023]
Abstract
Fruit- and vegetable-derived foods have become a very significant source of nutraceutical phytochemicals. Among vegetables, red chicory (Cichorium Intybus L. cultivar) has gained attention for its content of phenolic compounds, such as the anthocyanins. In this study, we evaluated the nutraceutical effects, in terms of antioxidant, cytoprotective, and antiproliferative activities, of extracts of the whole leaf or only the red part of the leaf of Treviso red chicory (a typical Italian red leafy plant) in various intestinal models, such as Caco-2 cells, differentiated in normal intestinal epithelia and undifferentiated Caco-2 cells. The results show that the whole leaf of red chicory can represent a good source of phytochemicals in terms of total phenolics and anthocyanins as well as the ability of these phytochemicals to exert antioxidant and cytoprotective effects in differentiated Caco-2 cells and antiproliferative effects in undifferentiated Caco-2 cells. Interestingly, compared to red chicory whole leaf extracts, the red part of leaf extracts had a significantly higher content of both total phenolics and anthocyanins. The same extracts effectively corresponded to an increase of antioxidant, cytoprotective, and antiproliferative activities. Taken together, these findings suggest that the red part of the leaf of Treviso red chicory with a high content of antioxidant anthocyanins could be interesting for development of new food supplements to improve intestinal health.
Collapse
Affiliation(s)
- Laura D'evoli
- National Research Institute on Food and Nutrition, Via Ardeatina 546, 00178 Rome, Italy
| | - Fabiana Morroni
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum, University of Bologna, Via Irnerio 48, 40126 Bologna, Italy
| | | | - Massimo Lucarini
- National Research Institute on Food and Nutrition, Via Ardeatina 546, 00178 Rome, Italy
| | - Patrizia Hrelia
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum, University of Bologna, Via Irnerio 48, 40126 Bologna, Italy
| | - Giorgio Cantelli-Forti
- Department for Life Quality Studies, Alma Mater Studiorum, University of Bologna, Corso d'Augusto 237, 47921 Rimini, Italy
| | - Andrea Tarozzi
- Department for Life Quality Studies, Alma Mater Studiorum, University of Bologna, Corso d'Augusto 237, 47921 Rimini, Italy
| |
Collapse
|
267
|
Su CH, Chen LJ, Liao JF, Cheng JT. Dual effects of silymarin on nasopharyngeal carcinoma cells (NPC-TW01). ACTA ACUST UNITED AC 2013; 20:261-6. [PMID: 24030447 DOI: 10.1159/000354594] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
BACKGROUND Silymarin is an active component from the seeds of Silybum marianum and is widely used as a hepatic protection agent. Apoptosis induced by silymarin has been mentioned in cervical cancer cells. However, silymarin shows dual effects on tumor cells: cytostatic action at a low dose and cytotoxic action at higher dose. Thus, in the present study, we focused on low-dosing of silymarin in nasopharyngeal carcinoma cells, NPC-TW01 (TW01). METHODS Cell viability assay was used to screen the effect of silymarin in TW01 cells. Western blot analysis was used to identify the expressions of antioxidant enzymes and anti-/proapoptotic proteins. Fluorescent dyes are employed to detect the content of reactive oxygen species (ROS) and cell apoptosis. RESULTS Treatment of TW01 cells with silymarin at a low dose (80 µmol/l) resulted in a significant increase of antioxidant enzymes. Silymarin increased the expressions of superoxide dismutase 1, catalase, and glutathione peroxidase. Consequently, the cell apoptosis was reduced markedly. An increase of Bcl-2 expression and a decrease of activated caspase-3 or apoptosis-inducing factor (AIF) were observed in TW01 cells at a low dose (80 µmol/l) treatment. CONCLUSION Silymarin at a low dose can induce cytostatic effect on TW01 cells mainly through an increase of antioxidant-like action. Thus, silymarin should be applied carefully to patients with nasopharyngeal carcinoma.
Collapse
Affiliation(s)
- Chin-Hui Su
- Institute of Pharmacology, National Yang-Ming University, Taipei City, Taiwan
| | | | | | | |
Collapse
|
268
|
Squires S, Christians E, Riedel M, Timothy D, Rodesch CK, Marvin J, Benjamin I. Effects of redox state on the efficient uptake of cell permeable Peptide in Mammalian cells. Open Biochem J 2013; 7:54-65. [PMID: 23919090 PMCID: PMC3731798 DOI: 10.2174/1874091x20130531001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Revised: 05/21/2013] [Accepted: 05/27/2013] [Indexed: 11/22/2022] Open
Abstract
We investigated whether a cell-penetrating peptide linked via a disulfide bond to a fluorophore-labeled
cargo peptide can be used to interrogate changes in cellular redox state. A fluorescence resonance energy
transfer (FRET) pair was constructed so that the cargo peptide was labeled with fluorescein amidite (FAM)
and the cell-penetrating peptide was attached to a quencher. Incubation of cells in culture with the FRET
construct was visualized using live-cell, time-lapse imaging, which demonstrated earlier cellular uptake of
the construct when cells were treated with the reducing agent n-acetylcysteine (NAC). The FRET peptide
construct was easily detected in cells cultured in 96-well plates using a plate-reader. Treatment of cells with
various classes of reducing or oxidizing agents resulted in an increase or decrease in FAM fluorescence,
respectively. Changes in FAM fluorescence correlated significantly with redox-sensitive green fluorescent
protein ratios in cells treated with hydrogen peroxide but not NAC. Detection of relative changes in cellular
redox state was enhanced by the fact that uptake of the cell-penetrating peptide occurred more quickly in
relatively reduced compared with oxidized cells. We conclude that cell-penetrating peptides coupled via
disulfide bonds to detectable cargo is a novel and specific approach for assessment of relative changes in
cellular thiol redox state.
Collapse
Affiliation(s)
- Shayne Squires
- Division of Cardiology, University of Utah School of Medicine, Salt Lake City, Utah, USA
| | | | | | | | | | | | | |
Collapse
|
269
|
Kim SJ, Jung HJ, Lim CJ. Reactive Oxygen Species-Dependent Down-Regulation of Tumor Suppressor Genes PTEN, USP28, DRAM, TIGAR, and CYLD Under Oxidative Stress. Biochem Genet 2013; 51:901-15. [DOI: 10.1007/s10528-013-9616-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2012] [Accepted: 02/25/2013] [Indexed: 12/22/2022]
|
270
|
Attia SM, Harisa GI, Hassan MH, Bakheet SA. Beryllium chloride-induced oxidative DNA damage and alteration in the expression patterns of DNA repair-related genes. Mutagenesis 2013; 28:555-9. [PMID: 23793613 DOI: 10.1093/mutage/get032] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Beryllium metal has physical properties that make its use essential for very specific applications, such as medical diagnostics, nuclear/fusion reactors and aerospace applications. Because of the widespread human exposure to beryllium metals and the discrepancy of the genotoxic results in the reported literature, detail assessments of the genetic damage of beryllium are warranted. Mice exposed to beryllium chloride at an oral dose of 23mg/kg for seven consecutive days exhibited a significant increase in the level of DNA-strand breaking and micronuclei formation as detected by a bone marrow standard comet assay and micronucleus test. Whereas slight beryllium chloride-induced oxidative DNA damage was detected following formamidopyrimidine DNA glycosylase digestion, digestion with endonuclease III resulted in considerable increases in oxidative DNA damage after the 11.5 and 23mg/kg/day treatment as detected by enzyme-modified comet assays. Increased 8-hydroxydeoxyguanosine was also directly correlated with increased bone marrow micronuclei formation and DNA strand breaks, which further confirm the involvement of oxidative stress in the induction of bone marrow genetic damage after exposure to beryllium chloride. Gene expression analysis on the bone marrow cells from beryllium chloride-exposed mice showed significant alterations in genes associated with DNA damage repair. Therefore, beryllium chloride may cause genetic damage to bone marrow cells due to the oxidative stress and the induced unrepaired DNA damage is probably due to the down-regulation in the expression of DNA repair genes, which may lead to genotoxicity and eventually cause carcinogenicity.
Collapse
Affiliation(s)
- Sabry M Attia
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia.
| | | | | | | |
Collapse
|
271
|
Yang L, Wang P, Wang H, Li Q, Teng H, Liu Z, Yang W, Hou L, Zou X. Fucoidan derived from Undaria pinnatifida induces apoptosis in human hepatocellular carcinoma SMMC-7721 cells via the ROS-mediated mitochondrial pathway. Mar Drugs 2013; 11:1961-76. [PMID: 23752353 PMCID: PMC3721216 DOI: 10.3390/md11061961] [Citation(s) in RCA: 115] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Revised: 05/22/2013] [Accepted: 05/27/2013] [Indexed: 02/06/2023] Open
Abstract
Fucoidans, fucose-enriched sulfated polysaccharides isolated from brown algae and marine invertebrates, have been shown to exert anticancer activity in several types of human cancer, including leukemia and breast cancer and in lung adenocarcinoma cells. In the present study, the anticancer activity of the fucoidan extracted from the brown seaweed Undaria pinnatifida was investigated in human hepatocellular carcinoma SMMC-7721 cells, and the underlying mechanisms of action were investigated. SMMC-7721 cells exposed to fucoidan displayed growth inhibition and several typical features of apoptotic cells, such as chromatin condensation and marginalization, a decrease in the number of mitochondria, and in mitochondrial swelling and vacuolation. Fucoidan-induced cell death was associated with depletion of reduced glutathione (GSH), accumulation of high intracellular levels of reactive oxygen species (ROS), and accompanied by damage to the mitochondrial ultrastructure, depolarization of the mitochondrial membrane potential (MMP, Δψm) and caspase activation. Moreover, fucoidan led to altered expression of factors related to apoptosis, including downregulating Livin and XIAP mRNA, which are members of the inhibitor of apoptotic protein (IAP) family, and increased the Bax-to-Bcl-2 ratio. These findings suggest that fucoidan isolated from U. pinnatifida induced apoptosis in SMMC-7721 cells via the ROS-mediated mitochondrial pathway.
Collapse
Affiliation(s)
- Lili Yang
- Department of Biotechnology, Dalian Medical University, Dalian 116044, China; E-Mails: (L.Y.); (P.W.); (H.W.); (Q.L.); (H.T.); (Z.L.); (W.Y.)
| | - Peisheng Wang
- Department of Biotechnology, Dalian Medical University, Dalian 116044, China; E-Mails: (L.Y.); (P.W.); (H.W.); (Q.L.); (H.T.); (Z.L.); (W.Y.)
| | - Huaxin Wang
- Department of Biotechnology, Dalian Medical University, Dalian 116044, China; E-Mails: (L.Y.); (P.W.); (H.W.); (Q.L.); (H.T.); (Z.L.); (W.Y.)
| | - Qiaomei Li
- Department of Biotechnology, Dalian Medical University, Dalian 116044, China; E-Mails: (L.Y.); (P.W.); (H.W.); (Q.L.); (H.T.); (Z.L.); (W.Y.)
| | - Hongming Teng
- Department of Biotechnology, Dalian Medical University, Dalian 116044, China; E-Mails: (L.Y.); (P.W.); (H.W.); (Q.L.); (H.T.); (Z.L.); (W.Y.)
| | - Zhichao Liu
- Department of Biotechnology, Dalian Medical University, Dalian 116044, China; E-Mails: (L.Y.); (P.W.); (H.W.); (Q.L.); (H.T.); (Z.L.); (W.Y.)
| | - Wenbo Yang
- Department of Biotechnology, Dalian Medical University, Dalian 116044, China; E-Mails: (L.Y.); (P.W.); (H.W.); (Q.L.); (H.T.); (Z.L.); (W.Y.)
| | - Lin Hou
- College of Life Science, Liaoning Normal University, Dalian 116081, China
| | - Xiangyang Zou
- Department of Biotechnology, Dalian Medical University, Dalian 116044, China; E-Mails: (L.Y.); (P.W.); (H.W.); (Q.L.); (H.T.); (Z.L.); (W.Y.)
| |
Collapse
|
272
|
Kim SU, Park YH, Min JS, Sun HN, Han YH, Hua JM, Lee TH, Lee SR, Chang KT, Kang SW, Kim JM, Yu DY, Lee SH, Lee DS. Peroxiredoxin I is a ROS/p38 MAPK-dependent inducible antioxidant that regulates NF-κB-mediated iNOS induction and microglial activation. J Neuroimmunol 2013; 259:26-36. [DOI: 10.1016/j.jneuroim.2013.03.006] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2012] [Revised: 02/18/2013] [Accepted: 03/18/2013] [Indexed: 12/12/2022]
|
273
|
García-Pérez E, Noratto GD, García-Lara S, Gutiérrez-Uribe JA, Mertens-Talcott SU. Micropropagation effect on the anti-carcinogenic activitiy of polyphenolics from Mexican oregano (Poliomintha glabrescens Gray) in human colon cancer cells HT-29. PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2013; 68:155-162. [PMID: 23435631 DOI: 10.1007/s11130-013-0344-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Phenolic extracts obtained from spices are known to have anti-carcinogenic activities but little is known about the effect of micropropagation on these beneficial effects. The main objective of this study was to evaluate the cytotoxic activity of flavonoid-enriched extracts (FEE) from the leaves of wild (WT), in vitro (IN), and ex vitro (EX) grown oregano plants in colon cancer cells HT-29 and the non-cancer cells CCD-18Co. Cell proliferation of HT-29 cells was reduced to 50 % by WT, IN, and EX at concentrations of 4.01, 1.32, and 4.84 mg of gallic acid equivalents (GAE)/L, respectively. In contrast, in CCD-18Co cells, higher concentrations were required for the same cytotoxic effect. At 6 mg GAE/L, WT and IN reduced the production of reactive oxygen species (ROS) of lipopolysaccharides (LPS)-stimulated control cells to 59.89 and 59.43 %, respectively, and EX to 73.89 %. The mRNA of Caspase-3 was increased 1.53-fold when cells were treated with 4 mg GAE/L of IN extract, and tumor necrosis factor receptor superfamily, member 6 (FAS), and BCL2-associated X protein (BAX) mRNA increased 2.55 and 1.53 fold, respectively. Results on protein expression corroborated the apoptotic effects with a significant decrease of B-cell lymphoma 2 (BCL2) expression for all treatments but more remarkable for EX that also showed the most intense signal of BAX. Overall, FEE extracts derived from micropropagation had increased pro-apoptotic effects, however extracts from the in vitro plants produced more efficacy at the transcriptional level while extracts from the ex vitro plant were superior at the traductional level.
Collapse
Affiliation(s)
- Enrique García-Pérez
- Department of Biotechnology and Food Engineering, Tecnologico de Monterrey, ITESM, Eugenio Garza Sada 2501 Sur, Monterrey, Mexico
| | | | | | | | | |
Collapse
|
274
|
Yang HY, Chay KO, Kwon J, Kwon SO, Park YK, Lee TH. Comparative proteomic analysis of cysteine oxidation in colorectal cancer patients. Mol Cells 2013; 35:533-42. [PMID: 23677378 PMCID: PMC3887873 DOI: 10.1007/s10059-013-0058-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Revised: 04/09/2013] [Accepted: 04/10/2013] [Indexed: 12/30/2022] Open
Abstract
Oxidative stress promotes damage to cellular proteins, lipids, membranes and DNA, and plays a key role in the development of cancer. Reactive oxygen species disrupt redox homeostasis and promote tumor formation by initiating aberrant activation of signaling pathways that lead to tumorigenesis. We used shotgun proteomics to identify proteins containing oxidation-sensitive cysteines in tissue specimens from colorectal cancer patients. We then compared the patterns of cysteine oxidation in the membrane fractions between the tumor and non-tumor tissues. Using nano-UPLC-MS(E) proteomics, we identified 31 proteins containing 37 oxidation-sensitive cysteines. These proteins were observed with IAM-binding cysteines in non-tumoral region more than tumoral region of CRC patients. Then using the Ingenuity pathway program, we evaluated the cellular canonical networks connecting those proteins. Within the networks, proteins with multiple connections were related with organ morphology, cellular metabolism, and various disorders. We have thus identified networks of proteins whose redox status is altered by oxidative stress, perhaps leading to changes in cellular functionality that promotes tumorigenesis.
Collapse
Affiliation(s)
- Hee-Young Yang
- Department of Oral Biochemistry, Dental Science Research Institute and the Brain Korea 21 Project, Medical Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University
| | - Kee-Oh Chay
- Department of Biochemistry, Chonnam National University Medical School
| | - Joseph Kwon
- Korea Basic Science Institute, Gwangju 500-757,
Korea
| | - Sang-Oh Kwon
- Division of Life Science, Korea Basic Science Institute, Daejeon 305-806,
Korea
| | - Young-Kyu Park
- Department of Surgery, Chonnam National University Hwasun Hospital, Hwasun 519-763,
Korea
| | - Tae-Hoon Lee
- Department of Oral Biochemistry, Dental Science Research Institute and the Brain Korea 21 Project, Medical Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University
| |
Collapse
|
275
|
Williams M, Tietzel I, Quick QA. 1'-Acetoxychavicol acetate promotes caspase 3-activated glioblastoma cell death by overcoming enhanced cytokine expression. Oncol Lett 2013; 5:1968-1972. [PMID: 23833677 PMCID: PMC3700938 DOI: 10.3892/ol.2013.1292] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Accepted: 03/19/2013] [Indexed: 12/23/2022] Open
Abstract
The brain consumes ∼20% of the oxygen utilized in the human body, meaning that brain tumors are vulnerable to paradoxical physiological effects from free radical generation. In the present study, 1'-acetoxychavicol acetate (ACA), a naturally derived antioxidant that inhibits xanthine oxidase, was evaluated for its role as an anti-tumorigenic agent in glioblastomas. The study revealed that ACA inhibited glioblastoma cell proliferation as a consequence of promoting apoptotic cell death by enhancing caspase 3 activity. It was also shown that ACA impaired the migratory ability of glioblastoma cells by decreasing their adhesive properties. Additionally, ACA increased the protein expression levels of the pro-survival signaling cytokines, IL-6 and IL-1α, established cell protectors and survival molecules in brain tumors. Together, these results demonstrate that, despite enhanced expression of compensatory signaling molecules that contribute to tumor cell survival, ACA is an effective pro-apoptotic inducing agent in glioblastomas.
Collapse
Affiliation(s)
- Musa Williams
- Department of Biology, Southern University at New Orleans, New Orleans, LA 70126, USA
| | | | | |
Collapse
|
276
|
Ilina EN, Shitikov EA, Ikryannikova LN, Alekseev DG, Kamashev DE, Malakhova MV, Parfenova TV, Afanas’ev MV, Ischenko DS, Bazaleev NA, Smirnova TG, Larionova EE, Chernousova LN, Beletsky AV, Mardanov AV, Ravin NV, Skryabin KG, Govorun VM. Comparative genomic analysis of Mycobacterium tuberculosis drug resistant strains from Russia. PLoS One 2013; 8:e56577. [PMID: 23437175 PMCID: PMC3577857 DOI: 10.1371/journal.pone.0056577] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2012] [Accepted: 01/15/2013] [Indexed: 11/30/2022] Open
Abstract
Tuberculosis caused by multidrug-resistant (MDR) and extensively drug-resistant (XDR) Mycobacterium tuberculosis (MTB) strains is a growing problem in many countries. The availability of the complete nucleotide sequences of several MTB genomes allows to use the comparative genomics as a tool to study the relationships of strains and differences in their evolutionary history including acquisition of drug-resistance. In our work, we sequenced three genomes of Russian MTB strains of different phenotypes--drug susceptible, MDR and XDR. Of them, MDR and XDR strains were collected in Tomsk (Siberia, Russia) during the local TB outbreak in 1998-1999 and belonged to rare KQ and KY families in accordance with IS6110 typing, which are considered endemic for Russia. Based on phylogenetic analysis, our isolates belonged to different genetic families, Beijing, Ural and LAM, which made the direct comparison of their genomes impossible. For this reason we performed their comparison in the broader context of all M. tuberculosis genomes available in GenBank. The list of unique individual non-synonymous SNPs for each sequenced isolate was formed by comparison with all SNPs detected within the same phylogenetic group. For further functional analysis, all proteins with unique SNPs were ascribed to 20 different functional classes based on Clusters of Orthologous Groups (COG). We have confirmed drug resistant status of our isolates that harbored almost all known drug-resistance associated mutations. Unique SNPs of an XDR isolate CTRI-4(XDR), belonging to a Beijing family were compared in more detail with SNPs of additional 14 Russian XDR strains of the same family. Only type specific mutations in genes of repair, replication and recombination system (COG category L) were found common within this group. Probably the other unique SNPs discovered in CTRI-4(XDR) may have an important role in adaptation of this microorganism to its surrounding and in escape from antituberculosis drugs treatment.
Collapse
Affiliation(s)
- Elena N. Ilina
- Research Institute of Physical-Chemical Medicine, Moscow, Russian Federation
| | - Egor A. Shitikov
- Research Institute of Physical-Chemical Medicine, Moscow, Russian Federation
| | | | - Dmitry G. Alekseev
- Research Institute of Physical-Chemical Medicine, Moscow, Russian Federation
- Moscow Institute of Physics and Technology, Dolgoprudny, Russian Federation
| | - Dmitri E. Kamashev
- Research Institute of Physical-Chemical Medicine, Moscow, Russian Federation
| | - Maja V. Malakhova
- Research Institute of Physical-Chemical Medicine, Moscow, Russian Federation
| | | | - Maxim V. Afanas’ev
- Research Institute of Physical-Chemical Medicine, Moscow, Russian Federation
| | - Dmitry S. Ischenko
- Research Institute of Physical-Chemical Medicine, Moscow, Russian Federation
- Moscow Institute of Physics and Technology, Dolgoprudny, Russian Federation
| | - Nikolai A. Bazaleev
- Research Institute of Physical-Chemical Medicine, Moscow, Russian Federation
| | | | | | | | | | | | | | | | - Vadim M. Govorun
- Research Institute of Physical-Chemical Medicine, Moscow, Russian Federation
| |
Collapse
|
277
|
Golubnitschaja O, Yeghiazaryan K, Costigliola V, Trog D, Braun M, Debald M, Kuhn W, Schild HH. Risk assessment, disease prevention and personalised treatments in breast cancer: is clinically qualified integrative approach in the horizon? EPMA J 2013; 4:6. [PMID: 23418957 PMCID: PMC3615949 DOI: 10.1186/1878-5085-4-6] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2012] [Accepted: 12/29/2012] [Indexed: 12/21/2022]
Abstract
Breast cancer is a multifactorial disease. A spectrum of internal and external factors contributes to the disease promotion such as a genetic predisposition, chronic inflammatory processes, exposure to toxic compounds, abundant stress factors, a shift-worker job, etc. The cumulative effects lead to high incidence of breast cancer in populations worldwide. Breast cancer in the USA is currently registered with the highest incidence rates amongst all cancer related patient cohorts. Currently applied diagnostic approaches are frequently unable to recognise early stages in tumour development that impairs individual outcomes. Early diagnosis has been demonstrated to be highly beneficial for significantly enhanced therapy efficacy and possibly full recovery. Actual paper shows that the elaboration of an integrative diagnostic approach combining several levels of examinations creates a robust platform for the reliable risk assessment, targeted preventive measures and more effective treatments tailored to the person in the overall task of breast cancer management. The levels of examinations are proposed, and innovative technological approaches are described in the paper. The absolute necessity to create individual patient profiles and extended medical records is justified for the utilising by routine medical services. Expert recommendations are provided to promote further developments in the field.
Collapse
Affiliation(s)
- Olga Golubnitschaja
- Department of Radiology, Rheinische Friedrich-Wilhelms-University of Bonn, Sigmund-Freud-Str, 25, Bonn, 53105, Germany.
| | | | | | | | | | | | | | | |
Collapse
|
278
|
Douillard S, Rozec B, Bigot E, Aillet L, Patrice T. Secondary reactive oxygen species production after PDT during pulmonary tumor growth in sera of nude mice. Photodiagnosis Photodyn Ther 2013; 10:62-71. [DOI: 10.1016/j.pdpdt.2012.05.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2011] [Revised: 04/04/2012] [Accepted: 05/20/2012] [Indexed: 10/28/2022]
|
279
|
Attia SM, Bakheet SA. Effect of dihydrokainate on the capacity of repair of DNA damage and apoptosis induced by doxorubicin. Mutagenesis 2013; 28:257-61. [DOI: 10.1093/mutage/ges079] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
280
|
Vrba J, Gažák R, Kuzma M, Papoušková B, Vacek J, Weiszenstein M, Křen V, Ulrichová J. A Novel Semisynthetic Flavonoid 7-O-Galloyltaxifolin Upregulates Heme Oxygenase-1 in RAW264.7 Cells via MAPK/Nrf2 Pathway. J Med Chem 2013; 56:856-66. [DOI: 10.1021/jm3013344] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Jiří Vrba
- Department of Medical Chemistry
and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská
3, Olomouc 77515, Czech Republic
| | - Radek Gažák
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Vídeňská
1083, Prague 14220, Czech Republic
| | - Marek Kuzma
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Vídeňská
1083, Prague 14220, Czech Republic
| | - Barbora Papoušková
- Regional Centre of Advanced Technologies
and Materials, Department of Analytical Chemistry, Faculty of Science, Palacký University, 17 listopadu 12, Olomouc
77146, Czech Republic
| | - Jan Vacek
- Department of Medical Chemistry
and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská
3, Olomouc 77515, Czech Republic
| | - Martin Weiszenstein
- Department of Medical Chemistry
and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská
3, Olomouc 77515, Czech Republic
| | - Vladimír Křen
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Vídeňská
1083, Prague 14220, Czech Republic
| | - Jitka Ulrichová
- Department of Medical Chemistry
and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská
3, Olomouc 77515, Czech Republic
- Institute
of Molecular and Translational
Medicine, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, Olomouc
77515, Czech Republic
| |
Collapse
|
281
|
|
282
|
Xu HN, Nioka S, Li LZ. Imaging heterogeneity in the mitochondrial redox state of premalignant pancreas in the pancreas-specific PTEN-null transgenic mouse model. Biomark Res 2013; 1:6. [PMID: 24252270 PMCID: PMC3776248 DOI: 10.1186/2050-7771-1-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Accepted: 12/18/2012] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Metabolic alteration is one of the hallmarks of carcinogenesis. We aimed to identify certain metabolic biomarkers for the early detection of pancreatic cancer (PC) using the transgenic PTEN-null mouse model. Pancreas-specific deletion of PTEN in mouse caused progressive premalignant lesions such as highly proliferative ductal metaplasia. We imaged the mitochondrial redox state of the pancreases of the transgenic mice approximately eight months old using the redox scanner, i.e., the nicotinamide adenine dinucleotide/oxidized flavoproteins (NADH/Fp) fluorescence imager at low temperature. Two different approaches, the global averaging of the redox indices without considering tissue heterogeneity along tissue depth and the univariate analysis of multi-section data using tissue depth as a covariate were adopted for the statistical analysis of the multi-section imaging data. The standard deviations of the redox indices and the histogram analysis with Gaussian fit were used to determine the tissue heterogeneity. RESULTS All methods show consistently that the PTEN deficient pancreases (Pdx1-Cre;PTENlox/lox) were significantly more heterogeneous in their mitochondrial redox state compared to the controls (PTENlox/lox). Statistical analysis taking into account the variations of the redox state with tissue depth further shows that PTEN deletion significantly shifted the pancreatic tissue to an overall more oxidized state. Oxidization of the PTEN-null group was not seen when the imaging data were analyzed by global averaging without considering the variation of the redox indices along tissue depth, indicating the importance of taking tissue heterogeneity into account for the statistical analysis of the multi-section imaging data. CONCLUSIONS This study reveals a possible link between the mitochondrial redox state alteration of the pancreas and its malignant transformation and may be further developed for establishing potential metabolic biomarkers for the early diagnosis of pancreatic cancer.
Collapse
Affiliation(s)
- He N Xu
- Department of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
- Britton Chance Laboratory of Redox Imaging, Johnson Research Foundation, Department of Biochemistry and Biophysics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Shoko Nioka
- Britton Chance Laboratory of Redox Imaging, Johnson Research Foundation, Department of Biochemistry and Biophysics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Lin Z Li
- Department of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
- Britton Chance Laboratory of Redox Imaging, Johnson Research Foundation, Department of Biochemistry and Biophysics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| |
Collapse
|
283
|
Cui FM, Li JX, Chen Q, Du HB, Zhang SY, Nie JH, Cao JP, Zhou PK, Hei TK, Tong J. Radon-induced alterations in micro-RNA expression profiles in transformed BEAS2B cells. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2013; 76:107-119. [PMID: 23294299 DOI: 10.1080/15287394.2013.738176] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Radon and its progeny are confirmed to be type I carcinogenic agents accounting for increased risks in 10% of observed lung cancers globally. However, the underlying carcinogenic mechanisms are largely unknown. In the present study, BEAS2B cells were directly exposed twice to 20,000 Bq/m(3) radon gas for 20 min once (first passage) and subsequently 10 times (fifth passage). The fifth-passage cells were then subcultured for 1 and 20 generations (named Rn5-1 and Rn5-20, respectively). Molecular mechanisms indicative of malignant transformation were assessed by determination of apoptosis, seroresistance, and microRNA (miRNA) expression profiles. The microRNA profiles were used to assess the functional annotations of the target genes. Data indicated an increased seroresistance and colony efficiency on soft agar, and enhanced apoptosis resistance in the Rn5-20 cells with significant differential expressions in some miRNA, including hsa-miR-483-3p, hsa-miR-494, hsa-miR-2115*, hsa-miR-33b, hsa-miR-1246, hsa-miR-3202, hsa-miR-18a, hsa-miR-125b, hsa-miR-17*, and hsa-miR-886-3p. Functional annotation demonstrated that these miRNA target genes were predominantly involved in the regulation of cell proliferation, differentiation, and adhesion during the process of malignant transformation, which is associated with signal pathways such as mitogen-activated protein kinase (MAPK), Int and Wg (Wnt), reactive oxygen species (ROS), nuclear factor κB (NF-κB), and other genes regulating cell cycles.
Collapse
Affiliation(s)
- Feng-Mei Cui
- Department of Radiation Toxicology and Oncology, Beijing Institute of Radiation Medicine, Beijing, China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
284
|
Llaverias G, Escolà-Gil JC, Lerma E, Julve J, Pons C, Cabré A, Cofán M, Ros E, Sánchez-Quesada JL, Blanco-Vaca F. Phytosterols inhibit the tumor growth and lipoprotein oxidizability induced by a high-fat diet in mice with inherited breast cancer. J Nutr Biochem 2013; 24:39-48. [DOI: 10.1016/j.jnutbio.2012.01.007] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2011] [Revised: 01/02/2012] [Accepted: 01/17/2012] [Indexed: 12/13/2022]
|
285
|
Koto K, Murata H, Kimura S, Sawai Y, Horie N, Matsui T, Ryu K, Ashihara E, Maekawa T, Kubo T, Fushiki S. Zoledronic acid significantly enhances radiation‑induced apoptosis against human fibrosarcoma cells by inhibiting radioadaptive signaling. Int J Oncol 2012; 42:525-34. [PMID: 23242142 DOI: 10.3892/ijo.2012.1735] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2012] [Accepted: 10/30/2012] [Indexed: 11/06/2022] Open
Abstract
Zoledronic acid (ZOL), a third-generation bisphosphonate, inhibits bone resorption, as well as exhibiting direct antitumor activity. To date, however, the combined effects of ZOL and ionizing radiation (IR) have not been assessed in patients with soft tissue sarcoma. We have, therefore, assessed the combined effects of ZOL and IR in fibrosarcoma cells. HT1080 fibrosarcoma cells were treated with ZOL and/or IR, together or sequentially and the antitumor effects were assessed. We found that ZOL significantly enhanced IR-induced apoptosis, especially when cells were treated with ZOL followed by IR. We, therefore, assessed the detailed mechanism of sequential treatment with ZOL and IR. Cells in G2 and M phases, the most radiosensitive phases of the cell cycle, were not increased by low concentrations of ZOL. However, the levels of expression of Akt, ERK1/2 and NF-κB proteins, all of which are related to radioadaptive resistance, were increased within a short time after irradiation with 3 Gy, and this expression was inhibited by a low concentration of ZOL, which blocked the prenylation of small GTPases. This sequential treatment also increased the generation of reactive oxygen species (ROS). These results suggest that the combination of ZOL with IR may be beneficial in treating patients with soft tissue sarcoma.
Collapse
Affiliation(s)
- Kazutaka Koto
- Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
286
|
Identification of candidate polymorphisms on stress oxidative and DNA damage repair genes related with clinical outcome in breast cancer patients. Int J Mol Sci 2012; 13:16500-13. [PMID: 23443115 PMCID: PMC3546704 DOI: 10.3390/ijms131216500] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Revised: 11/23/2012] [Accepted: 11/27/2012] [Indexed: 11/16/2022] Open
Abstract
Diverse polymorphisms have been associated with the predisposition to develop cancer. On fewer occasions, they have been related to the evolution of the disease and to different responses to treatment. Previous studies of our group have associated polymorphisms on genes related to oxidative stress (rs3736729 on GCLC and rs207454 on XDH) and DNA damage repair (rs1052133 on OGG1) with a predisposition to develop breast cancer. In the present work, we have evaluated the hypothesis that these polymorphisms also play a role in a patient's survival. A population-based cohort study of 470 women diagnosed with primary breast cancer and a median follow up of 52.44 months was conducted to examine the disease-free and overall survival in rs3736729, rs207454 and rs1052133 genetic variants. Adjusted Cox regression analysis was used to that end. The Kaplan-Meier analysis shows that rs3736729 on GCLC presents a significant association with disease-free survival and overall survival. The polymorphisms rs1052133 on OGG1 and rs207454 on XDH show a trend of association with overall survival. The analysis based on hormonal receptor status revealed a stronger association. The CC genotype on rs207454 (XDH) was significantly associated with lower time of disease free survival (p = 0.024) in progesterone receptor negative (PGR-) patients and rs3736729 (GCLC) was significantly associated with disease free survival (p = 0.001) and overall survival (p = 0.012) in the subgroup of estrogen receptor negative (ER-) patients. This work suggests that unfavorable genetic variants in the rs207454 (XDH) and rs3736729 (GCLC) polymorphisms may act as predictors of the outcome in negative progesterone receptor and negative estrogen receptor breast cancer patients, respectively.
Collapse
|
287
|
Shiota M, Yokomizo A, Naito S. Pro-survival and anti-apoptotic properties of androgen receptor signaling by oxidative stress promote treatment resistance in prostate cancer. Endocr Relat Cancer 2012; 19:R243-53. [PMID: 23033314 DOI: 10.1530/erc-12-0232] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Oxidative stress caused by an increase in reactive oxygen species levels or a decrease in cellular antioxidant capacity can evoke the modulation of various cellular events including androgen receptor (AR) signaling via direct or indirect interactions. In this review, we summarize the mechanisms of AR activation by oxidative stress including: i) AR overexpression; ii) AR activation by AR co-regulators or intracellular signal transduction pathways; iii) generation of AR mutations or splice variants; and iv) de novo androgen synthesis. AR signaling augmented by oxidative stress appears to contribute to pro-survival and anti-apoptotic effects in prostate cancer cells in response to androgen deprivation therapy. In addition, AR signaling suppresses anti-survival and pro-apoptotic effects in prostate cancer cells in response to various cytotoxic and tumor-suppressive interventions including taxanes and radiation through the modulation of βIII-tubulin and ataxia telangiectasia-mutated kinase expression respectively. Taken together, AR signaling appears to render prostate cancer cells refractory to various therapeutic interventions including castration, taxanes, and radiation, indicating that AR signaling is a comprehensive resistant factor and crucial target for prostate cancer treatment.
Collapse
Affiliation(s)
- Masaki Shiota
- Department of Urology, Graduate School of Medical Sciences, Kyushu University, Maidashi, Higashi-ku, Fukuoka, Japan
| | | | | |
Collapse
|
288
|
Reactive oxygen species-dependent transcriptional regulation of peroxisome proliferator-activated receptor γ coactivator 1α in a human hepatocarcinoma cell line. Genes Genomics 2012. [DOI: 10.1007/s13258-012-0086-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
289
|
Pleiotrophic effects of natural products in ROS-induced carcinogenesis: The role of plant-derived natural products in oral cancer chemoprevention. Cancer Lett 2012; 327:16-25. [DOI: 10.1016/j.canlet.2012.02.025] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2011] [Revised: 02/18/2012] [Accepted: 02/20/2012] [Indexed: 12/14/2022]
|
290
|
Gonçalves P, Gregório I, Catarino TA, Martel F. The effect of oxidative stress upon the intestinal epithelial uptake of butyrate. Eur J Pharmacol 2012. [PMID: 23201076 DOI: 10.1016/j.ejphar.2012.11.029] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Our aim was to investigate the effect of oxidative stress upon butyrate uptake at the intestinal epithelial level. For this, IEC-6 cells were treated with tert-butylhydroperoxide 3000μM (tBOOH), which increased levels of oxidative stress biomarkers, while maintaining cellular viability. The effect of tBOOH upon uptake of [(14)C]butyrate ([(14)C]BT) (10μM) can be summarized as follows: (a) it caused a reduction in the intracellular accumulation of [(14)C]BT over time, (b) it strongly reduced total [(14)C]BT uptake but did not affect Na(+)-independent uptake of [(14)C]BT, and (c) it did not affect the kinetics of [(14)C]BT uptake at 37°C, but increased uptake at 4°C. Moreover, tBOOH increased the efflux of [(14)C]BT not mediated by breast cancer resistance protein. We thus conclude that tBOOH strongly inhibits Na(+)-coupled monocarboxylate cotransporter 1 (SMCT1)-mediated, but not H(+)-coupled monocarboxylate transporter (MCT1)-mediated butyrate uptake; moreover, it increases uptake and efflux of butyrate by passive diffusion. tBOOH did not affect the mRNA expression levels of MCT1 and SMCT1 nor their cell membrane insertion. Rather, its effect was dependent on extracellular signal regulated kinase 1/2 and protein tyrosine kinase activation and on the generation of reactive oxygen species by NADPH and xanthine oxidases and was partially prevented by the polyphenols quercetin and resveratrol. In conclusion, tBOOH is an effective inhibitor of SMCT1-mediated butyrate transport in non-tumoral intestinal epithelial cells. Given the important role played by butyrate in the intestine, this mechanism may contribute to the procarcinogenic and proinflammatory effect of oxidative stress at this level.
Collapse
Affiliation(s)
- Pedro Gonçalves
- Department of Biochemistry (U38-FCT), Faculty of Medicine, University of Porto, Porto 4200-319, Portugal
| | | | | | | |
Collapse
|
291
|
Zhu B, Li X, Zhang Y, Ye C, Wang Y, Cai S, Huang H, Cai Y, Yeh S, Huang Z, Chen R, Tao Y, Wen X. Cross-talk of alpha tocopherol-associated protein and JNK controls the oxidative stress-induced apoptosis in prostate cancer cells. Int J Cancer 2012; 132:2270-82. [DOI: 10.1002/ijc.27927] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2012] [Accepted: 10/18/2012] [Indexed: 11/05/2022]
|
292
|
Myung DS, Joo YE. [Gut microbial influence and probiotics on colorectal cancer]. THE KOREAN JOURNAL OF GASTROENTEROLOGY 2012; 60:275-84. [PMID: 23172275 DOI: 10.4166/kjg.2012.60.5.275] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The human intestinal microbiota is a community of 10(13)-10(14) microorganisms that harbor in the intestine and normally participate in a symbiotic relationship with human. Technical and conceptual advances have enabled rapid progress in characterizing the taxonomic composition, metabolic capacity and immunomodulatory activity of the human intestinal microbiota. Their collective genome, defined as microbiome, is estimated to contain ≥150 times as many genes as 2.85 billion base pair human genome. The intestinal microbiota and its microbiome form a diverse and complex ecological community that profoundly impact intestinal homeostasis and disease states. It is becoming increasingly evident that the large and complex bacterial population of the large intestine plays an important role in colorectal carcinogenesis. Numerous studies show that gut immunity and inflammation have impact on the development of colorectal cancer. Additionally, bacteria have been linked to colorectal cancer by the production of toxic and genotoxic bacterial metabolite. In this review, we discuss the multifactorial role of intestinal microbiota in colorectal cancer and role for probiotics in the prevention of colorectal cancer.
Collapse
Affiliation(s)
- Dae Seong Myung
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Korea
| | | |
Collapse
|
293
|
Antioxidative, anti-inflammatory, and matrix metalloproteinase inhibitory activities of 20(S)-ginsenoside Rg3 in cultured mammalian cell lines. Mol Biol Rep 2012; 40:269-79. [PMID: 23054007 DOI: 10.1007/s11033-012-2058-1] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2012] [Accepted: 10/03/2012] [Indexed: 10/27/2022]
Abstract
Ginsenoside Rg3 is one of ginsenosides that are the well-known bioactive principles of Panax ginseng. Among the two stereoisomeric forms of Rg3, 20(S)-ginsenoside Rg3 [20(S)-Rg3] is predominant. 20(S)-Rg3 is capable of suppressing the nitric oxide (NO), reactive oxygen species (ROS) and prostaglandin E2 (PGE2) productions induced by lipopolysaccharide (LPS) in RAW264.7 macrophage cells in a concentration-dependent manner. In the same stimulated macrophages, 20(S)-Rg3 was able to suppress matrix metalloproteinase-9 (MMP-9) activity and suppress cyclooxygenase-2 (COX-2) expression. It suppressed the production of some proinflammatory cytokines, such as TNF-α, IL-1β and IL-6, and the cell mobility enhanced by LPS in the macrophage cells. 20(S)-Rg3 displayed suppressive effect on the ROS level but not on the NO level, and down-regulating effect on MMP-9 but not on MMP-2 in non-stimulated HaCat keratinocytes. 20(S)-Rg3 also exhibited suppressive effect on the MMP-9 gelatinolytic activity enhanced in the HaCat keratinocytes stimulated with tumor necrosis factor-α (TNF-α), one of the major proinflammatory cytokines. However, 20(S)-Rg3 was not able to modulate the NO level even in the presence of TNF-α. Taken together, anti-inflammatory and related antioxidative and MMP-9 inhibitory activities of 20(S)-Rg3, the major stereoisomeric form of ginsenoside Rg3, are confirmed in macrophage and keratinocyte cell lines.
Collapse
|
294
|
Dardenne E, Pierredon S, Driouch K, Gratadou L, Lacroix-Triki M, Espinoza MP, Zonta E, Germann S, Mortada H, Villemin JP, Dutertre M, Lidereau R, Vagner S, Auboeuf D. Splicing switch of an epigenetic regulator by RNA helicases promotes tumor-cell invasiveness. Nat Struct Mol Biol 2012; 19:1139-46. [PMID: 23022728 DOI: 10.1038/nsmb.2390] [Citation(s) in RCA: 101] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2011] [Accepted: 08/24/2012] [Indexed: 12/11/2022]
Abstract
Both epigenetic and splicing regulation contribute to tumor progression, but the potential links between these two levels of gene-expression regulation in pathogenesis are not well understood. Here, we report that the mouse and human RNA helicases Ddx17 and Ddx5 contribute to tumor-cell invasiveness by regulating alternative splicing of several DNA- and chromatin-binding factors, including the macroH2A1 histone. We show that macroH2A1 splicing isoforms differentially regulate the transcription of a set of genes involved in redox metabolism. In particular, the SOD3 gene that encodes the extracellular superoxide dismutase and plays a part in cell migration is regulated in an opposite manner by macroH2A1 splicing isoforms. These findings reveal a new regulatory pathway in which splicing factors control the expression of histone variant isoforms that in turn drive a transcription program to switch tumor cells to an invasive phenotype.
Collapse
Affiliation(s)
- Etienne Dardenne
- Institut National de la Santé et de la Recherche Médicale, U1052, Centre de Recherche en Cancérologie de Lyon, Lyon, France
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
295
|
Dajas F. Life or death: neuroprotective and anticancer effects of quercetin. JOURNAL OF ETHNOPHARMACOLOGY 2012; 143:383-96. [PMID: 22820241 DOI: 10.1016/j.jep.2012.07.005] [Citation(s) in RCA: 231] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2012] [Revised: 07/09/2012] [Accepted: 07/09/2012] [Indexed: 05/20/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Quercetin is a ubiquitous flavonoid that is present in numerous plants that are utilized in many different cultures for their nervous system and anticancer effects. To better understand the neuroprotective and antiproliferative activities of quercetin, we present a comprehensive review of the divergent actions that contribute to the ethnopharmacological profile of these plants. RESULTS The pharmacological activities of quercetin that modulate antioxidation/oxidation/kinase-signaling pathways might be differentially elicited in neurons compared with malignant cells, ultimately promoting cell survival or death in a cell type- and metabolism-specific manner. Whereas the broad antioxidation and anti-inflammatory activities of quercetin are important for neuronal survival, the oxidative, kinase- and cell cycle-inhibitory, apoptosis-inducing effects of quercetin are essential for its anticancer effects. The diverse mechanistic interactions and activities of quercetin that modulate the phosphorylation state of molecules as well as gene expression would alter the interconnected and concerted intracellular signaling equilibrium, either inhibiting or strengthening survival signals. These mechanisms, which have been mainly observed in in vitro studies, cannot be easily translated into an explanation of the divergent simultaneous neuroprotective and anticancer effects observed in vivo. This is in part due to low bioavailability in plasma and in the brain, as well as the nature of the actual active molecules. CONCLUSIONS Numerous studies have demonstrated the beneficial effects of chronic quercetin intake, which is ethnopharmacologically meaningful, as many plants that are chronically ingested by people contain quercetin. Although quercetin and quercetin-containing plants exhibit potential as therapeutic modalities in neuropathology and in cancer, the data collectively highlight the need to elucidate issues such as bioavailability as well as its correlation with effectiveness at biomarkers in vivo. There would be an increased potentential of these plants for chemoprevention and neuropathology prevention.
Collapse
Affiliation(s)
- Federico Dajas
- UNESCO CHAIR Neuroactive natural products, Department of Neurochemistry, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay.
| |
Collapse
|
296
|
Amin KA, Mohamed BM, El-Wakil MAM, Ibrahem SO. Impact of breast cancer and combination chemotherapy on oxidative stress, hepatic and cardiac markers. J Breast Cancer 2012; 15:306-12. [PMID: 23091543 PMCID: PMC3468784 DOI: 10.4048/jbc.2012.15.3.306] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Accepted: 08/13/2012] [Indexed: 11/30/2022] Open
Abstract
Purpose Carcinoma of the breast is the most prevalent cancer among Egyptian women and constitutes 29% of National Cancer Institute cases. The aim of this study was to determine the effect of breast cancer on oxidative stress, cardiac markers and liver function tests, moreover the role of 5-fluorouracil, doxorubicin, and cyclophosphamide (FAC) in the treatment of breast cancer and its mechanism through changing the measured markers. Methods Forty female breast cancer patients who were admitted to the Department of Oncology of the Beni-Suef University Hospital were enrolled in the study. This study included three arms: a control group of healthy age-matched females (n=20), breast cancer patients who weren't receiving treatment (n=20), and patients undergoing treatment with anticancer combination drugs FAC (n=20). Blood samples collected from the control subjects and patients were analysed to determine levels of catalase, reduced glutathione (GSH), uric acid, nitric oxide (NO), malondialdehyde, creatine kinase (CK), lactate dehydrogenase (LDH), liver enzymes (alanine aminotransferase and aspartate aminotransferase), and creatinine. Results The levels of catalase and GSH were significantly reduced (p<0.05) in breast carcinoma and FAC treated breast cancer patients. The lipid peroxidation and NO levels were significantly enhanced in both untreated and FAC treated breast cancer patients. The CK and LDH were significantly enhanced (p<0.05) in the FAC group. Conclusion The results from the present study show that oxidative stress is implicated in breast carcinoma and chemotherapy aggravates this oxidative stress which causes damage to many cellular targets and has the main side effect of cardiotoxicity.
Collapse
Affiliation(s)
- Kamal Adel Amin
- Biochemistry Department, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, Egypt
| | | | | | | |
Collapse
|
297
|
Vilaça R, Mendes V, Mendes MV, Carreto L, Amorim MA, de Freitas V, Moradas-Ferreira P, Mateus N, Costa V. Quercetin protects Saccharomyces cerevisiae against oxidative stress by inducing trehalose biosynthesis and the cell wall integrity pathway. PLoS One 2012; 7:e45494. [PMID: 23029052 PMCID: PMC3445532 DOI: 10.1371/journal.pone.0045494] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2012] [Accepted: 08/20/2012] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Quercetin is a naturally occurring flavonol with antioxidant, anticancer and anti-ageing properties. In this study we aimed to identify genes differentially expressed in yeast cells treated with quercetin and its role in oxidative stress protection. METHODS A microarray analysis was performed to characterize changes in the transcriptome and the expression of selected genes was validated by RT-qPCR. Biological processes significantly affected were identified by using the FUNSPEC software and their relevance in H(2)O(2) resistance induced by quercetin was assessed. RESULTS Genes associated with RNA metabolism and ribosome biogenesis were down regulated in cells treated with quercetin, whereas genes associated with carbohydrate metabolism, endocytosis and vacuolar proteolysis were up regulated. The induction of genes related to the metabolism of energy reserves, leading to the accumulation of the stress protectant disaccharide trehalose, and the activation of the cell wall integrity pathway play a key role in oxidative stress resistance induced by quercetin. CONCLUSIONS These results suggest that quercetin may act as a modulator of cell signaling pathways related to carbohydrate metabolism and cell integrity to exert its protective effects against oxidative stress.
Collapse
Affiliation(s)
- Rita Vilaça
- Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
- Departamento de Biologia Molecular, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Vanda Mendes
- Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
- Centro de Investigação em Química, Faculdade de Ciências da Universidade do Porto, Porto, Portugal
| | - Marta Vaz Mendes
- Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - Laura Carreto
- Departamento de Biologia e Centro de Estudos do Ambiente e do Mar, Universidade de Aveiro, Aveiro, Portugal
| | - Maria Amélia Amorim
- Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
- Departamento de Biologia Molecular, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Victor de Freitas
- Centro de Investigação em Química, Faculdade de Ciências da Universidade do Porto, Porto, Portugal
| | - Pedro Moradas-Ferreira
- Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
- Departamento de Biologia Molecular, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Nuno Mateus
- Centro de Investigação em Química, Faculdade de Ciências da Universidade do Porto, Porto, Portugal
| | - Vítor Costa
- Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
- Departamento de Biologia Molecular, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
- * E-mail:
| |
Collapse
|
298
|
Liby KT, Sporn MB. Synthetic oleanane triterpenoids: multifunctional drugs with a broad range of applications for prevention and treatment of chronic disease. Pharmacol Rev 2012; 64:972-1003. [PMID: 22966038 DOI: 10.1124/pr.111.004846] [Citation(s) in RCA: 317] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
We review the rationale for the use of synthetic oleanane triterpenoids (SOs) for prevention and treatment of disease, as well as extensive biological data on this topic resulting from both cell culture and in vivo studies. Emphasis is placed on understanding mechanisms of action. SOs are noncytotoxic drugs with an excellent safety profile. Several hundred SOs have now been synthesized and in vitro have been shown to: 1) suppress inflammation and oxidative stress and therefore be cytoprotective, especially at low nanomolar doses, 2) induce differentiation, and 3) block cell proliferation and induce apoptosis at higher micromolar doses. Animal data on the use of SOs in neurodegenerative diseases and in diseases of the eye, lung, cardiovascular system, liver, gastrointestinal tract, and kidney, as well as in cancer and in metabolic and inflammatory/autoimmune disorders, are reviewed. The importance of the cytoprotective Kelch-like erythroid cell-derived protein with CNC homology-associated protein 1/nuclear factor (erythroid-derived 2)-like 2/antioxidant response element (Keap1/Nrf2/ARE) pathway as a mechanism of action is explained, but interactions with peroxisome proliferator-activated receptor γ (PARPγ), inhibitor of nuclear factor-κB kinase complex (IKK), janus tyrosine kinase/signal transducer and activator of transcription (JAK/STAT), human epidermal growth factor receptor 2 (HER2)/ErbB2/neu, phosphatase and tensin homolog (PTEN), the phosphatidylinositol 3-kinase/protein kinase B (PI3K/Akt) pathway, mammalian target of rapamycin (mTOR), and the thiol proteome are also described. In these interactions, Michael addition of SOs to reactive cysteine residues in specific molecular targets triggers biological activity. Ultimately, SOs are multifunctional drugs that regulate the activity of entire networks. Recent progress in the earliest clinical trials with 2-cyano-3,12-dioxooleana-1,9(11)-dien-28-oic acid (CDDO) methyl ester (bardoxolone methyl) is also summarized.
Collapse
Affiliation(s)
- Karen T Liby
- Departments of Medicine and Pharmacology, Dartmouth Medical School, Hanover, NH 03755, USA.
| | | |
Collapse
|
299
|
Role of peroxisomes in ROS/RNS-metabolism: Implications for human disease. Biochim Biophys Acta Mol Basis Dis 2012; 1822:1363-73. [DOI: 10.1016/j.bbadis.2011.12.001] [Citation(s) in RCA: 383] [Impact Index Per Article: 31.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2011] [Revised: 11/25/2011] [Accepted: 12/02/2011] [Indexed: 12/27/2022]
|
300
|
Lee JC, Son YO, Pratheeshkumar P, Shi X. Oxidative stress and metal carcinogenesis. Free Radic Biol Med 2012; 53:742-57. [PMID: 22705365 DOI: 10.1016/j.freeradbiomed.2012.06.002] [Citation(s) in RCA: 193] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2012] [Revised: 05/31/2012] [Accepted: 06/02/2012] [Indexed: 01/18/2023]
Abstract
Occupational and environmental exposures to metals are closely associated with an increased risk of various cancers. Although carcinogenesis caused by metals has been intensively investigated, the exact mechanisms of action are still unclear. Accumulating evidence indicates that reactive oxygen species (ROS) generated by metals play important roles in the etiology of degenerative and chronic diseases. This review covers recent advances in (1) metal-induced generation of ROS and the related mechanisms; (2) the relationship between metal-mediated ROS generation and carcinogenesis; and (3) the signaling proteins involved in metal-induced carcinogenesis, especially intracellular reduction-oxidation-sensitive molecules.
Collapse
Affiliation(s)
- Jeong-Chae Lee
- Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, KY 40536, USA
| | | | | | | |
Collapse
|