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Batista JEDS, Rodrigues MB, Bristot IJ, Silva V, Bernardy S, Rodrigues OED, Dornelles L, Carvalho FB, de Sousa FJF, Fernandes MDC, Zanatta G, Soares FAA, Klamt F. Systematic screening of synthetic organochalcogen compounds with anticancer activity using human lung adenocarcinoma spheroids. Chem Biol Interact 2024; 396:111047. [PMID: 38735454 DOI: 10.1016/j.cbi.2024.111047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 05/06/2024] [Accepted: 05/10/2024] [Indexed: 05/14/2024]
Abstract
Lung adenocarcinoma stands as a leading global cause of cancer-related fatalities, with current therapeutic approaches remaining unsatisfactory. Given the association between elevated oxidative markers and the aggressive nature of cancer cells (including multidrug resistance and metastatic potential) that can predict poor outcome of lung adenocarcinoma patients, any compounds that interfere with their aberrant redox biology should be rationally explored as innovative intervention strategies. This study was designed to screen potential anticancer activities within nine newly synthesized organochalcogen - compounds characterized by the presence of oxygen, sulfur, or selenium elements in their structure and exhibiting antioxidant activity - and systematically evaluated their performance against cisplatin, the cornerstone therapeutic agent for lung adenocarcinoma. Our methodology involved the establishment of optimal conditions for generating single tumor spheroids using A549 human lung adenocarcinoma cell line. The initiation interval for spheroid formation was determined to be four days in vitro (DIV), and these single spheroids demonstrated sustained growth over a period of 20 DIV. Toxic dose-response curves were subsequently performed for each compound after 24 and 48 h of incubation at the 12th DIV. Our findings reveal that at least two of the synthetic organochalcogen compounds exhibited noteworthy anticancer activity, surpassing cisplatin in key parameters such as lower LD (Lethal Dose) 50, larger drug activity area, and maximum amplitude of effect, and are promising drugs for futures studies in the treatment of lung adenocarcinomas. Physicochemical descriptors and prediction ADME (absorption, distribution, metabolism, and excretion) parameters of selected compounds were obtained using SwissADME computational tool; Molinspiration server was used to calculate a biological activity score, and possible molecule targets were evaluated by prediction with the SwissTargetPrediction server. This research not only sheds light on novel avenues for therapeutic exploration but also underscores the potential of synthetic organochalcogen compounds as agents with superior efficacy compared to established treatments.
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Affiliation(s)
- Jéssica Eduarda Dos Santos Batista
- Department of Biochemistry and Molecular Biology, Federal University of Santa Maria (UFSM), Santa Maria, RS, 97105-900, Brazil; Laboratory of Cellular Biochemistry, Department of Biochemistry, Institute of Basic Health Sciences (ICBS), Federal University of Rio Grande Do Sul (UFRGS), Porto Alegre, RS, 90035-003, Brazil; National Institutes of Science and Technology-Translational Medicine (INCT-TM), Brazil
| | | | - Ivi Juliana Bristot
- Laboratory of Cellular Biochemistry, Department of Biochemistry, Institute of Basic Health Sciences (ICBS), Federal University of Rio Grande Do Sul (UFRGS), Porto Alegre, RS, 90035-003, Brazil; National Institutes of Science and Technology-Translational Medicine (INCT-TM), Brazil
| | - Valquíria Silva
- Laboratory of Cellular Biochemistry, Department of Biochemistry, Institute of Basic Health Sciences (ICBS), Federal University of Rio Grande Do Sul (UFRGS), Porto Alegre, RS, 90035-003, Brazil; National Institutes of Science and Technology-Translational Medicine (INCT-TM), Brazil
| | - Silvia Bernardy
- Department of Chemistry, Federal University of Santa Maria (UFSM), Santa Maria, RS, 97105-900, Brazil
| | | | - Luciano Dornelles
- Department of Chemistry, Federal University of Santa Maria (UFSM), Santa Maria, RS, 97105-900, Brazil
| | - Fabiano Barbosa Carvalho
- Pathology Laboratory, Federal University of Health Sciences of Porto Alegre (UFCSPA), Porto Alegre, RS, 90050-170, Brazil
| | | | - Marilda da Cruz Fernandes
- Pathology Laboratory, Federal University of Health Sciences of Porto Alegre (UFCSPA), Porto Alegre, RS, 90050-170, Brazil
| | - Geancarlo Zanatta
- Department of Biophysics, UFRGS, Porto Alegre, RS, 91501-970, Brazil
| | - Félix Alexandre Antunes Soares
- Department of Biochemistry and Molecular Biology, Federal University of Santa Maria (UFSM), Santa Maria, RS, 97105-900, Brazil
| | - Fábio Klamt
- Laboratory of Cellular Biochemistry, Department of Biochemistry, Institute of Basic Health Sciences (ICBS), Federal University of Rio Grande Do Sul (UFRGS), Porto Alegre, RS, 90035-003, Brazil; National Institutes of Science and Technology-Translational Medicine (INCT-TM), Brazil.
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Miyahara R, Taniguchi Y. Selective Unnatural Base Pairing and Recognition of 2-Hydroxy-2'-deoxyadenosine in DNA Using Pseudo-dC Derivatives. J Am Chem Soc 2022; 144:16150-16156. [PMID: 36001794 DOI: 10.1021/jacs.2c07000] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The formation of unnatural base pairs within duplex DNA would facilitate DNA nanotechnology and biotechnology. Iso-2'-deoxyguanosine (iso-dG) forms base pairs with iso-2'-deoxycytidine, and its use as an unnatural base pair was investigated. Iso-dG is one of the tautomers of 2-hydroxy-2'-deoxyadenosine (2-OH-dA), known as an oxidatively damaged nucleobase, and its selective recognition in DNA plays an important role in the diagnosis and pathogenesis of disease. Therefore, we focused on pseudo-dC (ψdC) as a suitable molecule that recognizes 2-OH-dA in DNA. Since 2-OH-dA shows tautomeric structures in DNA, we designed and used ψdC, which also has a tautomeric structure. We successfully synthesized a ψdC phosphoramidite compound for the synthesis of oligonucleotides (ODNs) as well as its triphosphate derivative (ψdCTP). Tm measurements revealed that ODNs including ψdC showed stable base pair formation with ODNs having 2-OH-dA. In contrast, low Tm values were observed for other bases (dG, dA, dC, and T). The results obtained for the single-nucleotide primer extension reaction revealed that ψdCTP was incorporated into the complementary position of 2-OH-dA in template DNA with high selectivity. In addition, the primer elongation reaction was confirmed to proceed in the presence of dNTPs. The present study reports an artificial nucleic acid that selectively and stably forms unnatural base pairs with 2-OH-dA in DNA.
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Affiliation(s)
- Ryo Miyahara
- Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi Higashi-ku, Fukuoka 812-8582, Japan
| | - Yosuke Taniguchi
- Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi Higashi-ku, Fukuoka 812-8582, Japan
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Cao P, Zhang C, Hua DX, Li MD, Lv BB, Fu L, Zhao H. Serum 8-Hydroxy-2'-deoxyguanosine Predicts Severity and Prognosis of Patients with Acute Exacerbation of Chronic Obstructive Pulmonary Disease. Lung 2022; 200:31-39. [PMID: 34982215 DOI: 10.1007/s00408-021-00507-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 12/16/2021] [Indexed: 10/19/2022]
Abstract
BACKGROUND Oxidative stress is involved in the pathogenesis of chronic obstructive pulmonary disease (COPD). 8-Hydroxy-2'-deoxyguanosine (8-OHdG) is recognized as a biomarker of oxidative stress and is implicated in several pulmonary diseases. Nonetheless, the role of 8-OHdG remains unclear in COPD patients. This research aimed to evaluate the correlations between serum 8-OHdG on admission and the severity and prognosis of hospitalized COPD patients with acute exacerbation. METHODS A total of 150 COPD hospitalized patients and 150 healthy individuals were recruited. Serum 8-OHdG was measured by ELISA and the length of hospital stay was calculated. The number of acute exacerbations of COPD was tracked within 1 year after this hospitalization. RESULTS The levels of serum 8-OHdG were elevated in COPD patients compared with the control group. Serum 8-OHdG was gradually elevated with decreased pulmonary function in COPD patients. Furthermore, Pearson linear association found that the levels of serum 8-OHdG were inversely correlated with pulmonary function and positively correlated with inflammatory cytokines in COPD patients. In addition, logistic regression analysis revealed that serum 8-OHdG elevation was a risk factor for pulmonary function decline in COPD patients. The length of hospital stay was tracked at this time. Higher serum 8-OHdG on admission increased the length of hospital stay among COPD patients. CONCLUSION Serum 8-OHdG on admission is positively correlated with the severity and adverse prognosis among COPD patients, suggesting that 8-OHdG may be involved in the pathogenesis of COPD. Serum 8-OHdG may be a biomarker to predict the progression of COPD.
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Affiliation(s)
- Peng Cao
- Second Affiliated Hospital, Anhui Medical University, Furong Road no 678, Hefei, 230601, China
| | - Chen Zhang
- Second Affiliated Hospital, Anhui Medical University, Furong Road no 678, Hefei, 230601, China
| | - Dong-Xu Hua
- Second Affiliated Hospital, Anhui Medical University, Furong Road no 678, Hefei, 230601, China
| | - Meng-Die Li
- Second Affiliated Hospital, Anhui Medical University, Furong Road no 678, Hefei, 230601, China
| | - Bian-Bian Lv
- Second Affiliated Hospital, Anhui Medical University, Furong Road no 678, Hefei, 230601, China
| | - Lin Fu
- Second Affiliated Hospital, Anhui Medical University, Furong Road no 678, Hefei, 230601, China.
| | - Hui Zhao
- Second Affiliated Hospital, Anhui Medical University, Furong Road no 678, Hefei, 230601, China.
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Ayıkgöz Y, Salih Aydın M, Kankılıç N, Temiz E. Nuclear factor erythroid 2-related factor 2 (Nrf2), tumor necrosis factor alpha protein (TNF-α), heme oxygenase-1 (HO-1) gene expressions during cardiopulmonary bypass. Gene 2021; 790:145690. [PMID: 33961973 DOI: 10.1016/j.gene.2021.145690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 04/14/2021] [Accepted: 04/30/2021] [Indexed: 10/21/2022]
Abstract
OBJECTIVE During extracorporeal circulation, blood is in contact with nonendothelial surfaces. The increase in the amount of blood touching the non-endothelial surface increases the damage to the blood elements. This initiates and increases oxidative stress. Increased oxidative stress leads to the activation of antioxidant systems. These two systems work gradually in the process of Cardiopulmonary Bypass. This study aims to investigate the changes of TNF-α, Nrf2 and HO-1 gene expression in extracorporeal circulation. MATERIALS AND METHODS Fifteen patients who underwent open heart surgery were included in the study. Blood samples were taken preoperatively, during cardiopulmonary bypass (CPB) and 24 hours postoperatively. TNF-α, Nrf2 and HO-1 gene expressions in plasma samples were studied by using appropriate kits. Changes in gene expressions were compared. RESULTS TNF-α gene expression increased during CPB compared to preoperative levels (p <0.05). Similarly, Nrf-2 gene expression increased significantly during CPB (p <0.001) and decreased postoperatively (p <0.001). There was a significant increase in HO-1 gene expression during CPB (p <0.01). Postoperatively, this increase was found to decrease similar to Nrf2 (p <0.05). CONCLUSIONS According to the results, TNF-α, Nrf2, HO-1 gene expressions increase during CPB and these values decrease after the operation. This shows that oxidative stress and inflammatory processes start with CPB and antioxidant processes start similarly. With the termination of CPB, both processes are terminated. This has been demonstrated by gene expressions. Future studies will make it easier to understand these processes.
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Affiliation(s)
- Yusuf Ayıkgöz
- Department of Cardiovascular Surgery, Medical Faculty, Harran University, Şanlıurfa, Turkey
| | - Mehmet Salih Aydın
- Department of Cardiovascular Surgery, Medical Faculty, Harran University, Şanlıurfa, Turkey
| | - Nazım Kankılıç
- Department of Cardiovascular Surgery, Medical Faculty, Harran University, Şanlıurfa, Turkey.
| | - Ebru Temiz
- Medical Promotion and Marketing Program, Health Services Vocational School, Harran University, Department of Biochemistry, Medical Faculty, Harran University, Şanlıurfa, Turkey
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Fan H, Zaman MAU, Chen W, Ali T, Campbell A, Zhang Q, Setu NI, Saxon E, Zahn NM, Benko AM, Arnold LA, Peng X. Assessment of Phenylboronic Acid Nitrogen Mustards as Potent and Selective Drug Candidates for Triple-Negative Breast Cancer. ACS Pharmacol Transl Sci 2021; 4:687-702. [PMID: 33860194 PMCID: PMC8033613 DOI: 10.1021/acsptsci.0c00092] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Indexed: 12/18/2022]
Abstract
Triple-negative breast cancer (TNBC) has limited treatment options and the worst prognosis among all types of breast cancer. We describe two prodrugs, namely, CWB-20145 (1) and its methyl analogue FAN-NM-CH3 (2) that reduced the size of TNBC-derived tumors. The DNA cross-linking of nitrogen mustard prodrugs 1 and 2 was superior to that of chlorambucil and melphalan once activated in the presence of H2O2. The cellular toxicity of 1 and 2 was demonstrated in seven human cancer cell lines. The TNBC cell line MDA-MB-468 was particularly sensitive toward 1 and 2. Compound 2 was 10 times more cytotoxic than chlorambucil and 16 times more active than melphalan. An evaluation of the gene expression demonstrated an upregulation of the tumor suppressor genes p53 and p21 supporting a transcriptional mechanism of a reduced tumor growth. Pharmacokinetic studies with 1 showed a rapid conversion of the prodrug. The introduction of a methyl group generated 2 with an increased half-life. An in vivo toxicity study in mice demonstrated that both prodrugs were less toxic than chlorambucil. Compounds 1 and 2 reduced tumor growth with an inhibition rate of more than 90% in athymic nude mice xenografted with MDA-MB-468 cells. Together, the in vivo investigations demonstrated that treatment with 1 and 2 suppressed tumor growth without affecting normal tissues in mice. These phenylboronic acid nitrogen mustard prodrugs represent promising drug candidates for the treatment of TNBC. However, the mechanisms underlying their superior in vivo activity and selectivity as well as the correlation between H2O2 level and in vivo efficacy are not yet fully understood.
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Affiliation(s)
| | | | | | - Taufeeque Ali
- Department of Chemistry and
Biochemistry and the Milwaukee Institute for Drug Discovery, University of Wisconsin-Milwaukee, 3210 N. Cramer Street, Milwaukee, Wisconsin 53211, United States
| | - Anahit Campbell
- Department of Chemistry and
Biochemistry and the Milwaukee Institute for Drug Discovery, University of Wisconsin-Milwaukee, 3210 N. Cramer Street, Milwaukee, Wisconsin 53211, United States
| | - Qi Zhang
- Department of Chemistry and
Biochemistry and the Milwaukee Institute for Drug Discovery, University of Wisconsin-Milwaukee, 3210 N. Cramer Street, Milwaukee, Wisconsin 53211, United States
| | - Nurul Islam Setu
- Department of Chemistry and
Biochemistry and the Milwaukee Institute for Drug Discovery, University of Wisconsin-Milwaukee, 3210 N. Cramer Street, Milwaukee, Wisconsin 53211, United States
| | - Eron Saxon
- Department of Chemistry and
Biochemistry and the Milwaukee Institute for Drug Discovery, University of Wisconsin-Milwaukee, 3210 N. Cramer Street, Milwaukee, Wisconsin 53211, United States
| | - Nicolas M. Zahn
- Department of Chemistry and
Biochemistry and the Milwaukee Institute for Drug Discovery, University of Wisconsin-Milwaukee, 3210 N. Cramer Street, Milwaukee, Wisconsin 53211, United States
| | - Anna M. Benko
- Department of Chemistry and
Biochemistry and the Milwaukee Institute for Drug Discovery, University of Wisconsin-Milwaukee, 3210 N. Cramer Street, Milwaukee, Wisconsin 53211, United States
| | - Leggy A. Arnold
- Department of Chemistry and
Biochemistry and the Milwaukee Institute for Drug Discovery, University of Wisconsin-Milwaukee, 3210 N. Cramer Street, Milwaukee, Wisconsin 53211, United States
| | - Xiaohua Peng
- Department of Chemistry and
Biochemistry and the Milwaukee Institute for Drug Discovery, University of Wisconsin-Milwaukee, 3210 N. Cramer Street, Milwaukee, Wisconsin 53211, United States
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Catalase immunoexpression in colorectal lesions. GASTROENTEROLOGY REVIEW 2020; 15:330-337. [PMID: 33777273 PMCID: PMC7988832 DOI: 10.5114/pg.2020.101562] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Accepted: 11/26/2019] [Indexed: 11/17/2022]
Abstract
Introduction It is generally accepted that the gastrointestinal tract, and especially the colon, is constantly exposed to reactive oxygen species (ROS) that may be responsible for the appearance of genetic mutations. To keep a steady-state control over ROS production-detoxification, organisms have evolved a defensive system. Nevertheless, many reports have described decreased level of antioxidant enzymes, especially catalase (CAT), in cancer tissues. Aim In this work we try to assess the immunohistochemical expression of CAT protein in colorectal adenoma and adenocarcinoma samples. Material and methods This study was performed on resected specimens obtained from 122 patients who had undergone surgical resection for colorectal cancer, and from 120 patients who had undergone colonoscopy. Paraffin- embedded, 4 µm-thick tissue sections were stained for rabbit polyclonal anti CAT antibody obtained from GeneTex (cat. no. GTX110704). Results In adenoma strong immunoexpression was detected mainly in infiltrating mononuclear cells within lamina propria. High expression of CAT was significantly associated with grade of dysplasia (high grade vs. low grade, p = 0.037). In adenocarcinoma samples, the high level of CAT immunoexpression was significantly correlated with histological grade of tumour (G1 vs. G2 vs. G3, p = 0.001) and depth of invasion (T1 vs. T2 vs. T3 vs. T4, p = 0.003). Conclusions Development of colorectal cancer is associated with increased expression of CAT in the stage of adenoma and decreased expression in the stage of adenocarcinoma.
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Ding T, Tang F, Ni G, Liu J, Zhao H, Chen Q. The development of isoguanosine: from discovery, synthesis, and modification to supramolecular structures and potential applications. RSC Adv 2020. [DOI: 10.1039/c9ra09427j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
First systematical review of isoguanosine, an unnatural base, as an isomer of guanosine shows significant differences in diverse properties.
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Affiliation(s)
- Tingting Ding
- State Key Laboratory of Oral Diseases
- National Clinical Research Center for Oral Diseases
- Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management
- West China Hospital of Stomatology
- Sichuan University
| | - Fan Tang
- State Key Laboratory of Oral Diseases
- National Clinical Research Center for Oral Diseases
- Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management
- West China Hospital of Stomatology
- Sichuan University
| | - Guangcheng Ni
- State Key Laboratory of Oral Diseases
- National Clinical Research Center for Oral Diseases
- Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management
- West China Hospital of Stomatology
- Sichuan University
| | - Jiang Liu
- State Key Laboratory of Oral Diseases
- National Clinical Research Center for Oral Diseases
- Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management
- West China Hospital of Stomatology
- Sichuan University
| | - Hang Zhao
- State Key Laboratory of Oral Diseases
- National Clinical Research Center for Oral Diseases
- Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management
- West China Hospital of Stomatology
- Sichuan University
| | - Qianming Chen
- State Key Laboratory of Oral Diseases
- National Clinical Research Center for Oral Diseases
- Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management
- West China Hospital of Stomatology
- Sichuan University
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Oxidative stress in lung cancer patients is associated with altered serum markers of lipid metabolism. PLoS One 2019; 14:e0215246. [PMID: 30973911 PMCID: PMC6459492 DOI: 10.1371/journal.pone.0215246] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Accepted: 03/28/2019] [Indexed: 11/22/2022] Open
Abstract
In lung cancer (LC), alterations in redox balance are extensively observed and are a consequence of disease as well as co-occurrent with smoking. We previously demonstrated that metabolic disturbances such as trace element status and carbohydrate metabolism alterations are linked with redox status. The aim of this study was to evaluate relationships between the serum parameters of lipid metabolism and redox balance in LC patients. Serum parameters of lipid metabolism, i.e. total cholesterol (T-C), HDL cholesterol (HDL-C), LDL cholesterol (LDL-C), triglycerides (TG), T-C:HDL-C ratio, non-HDL-C, apolipoprotein A1 (Apo-A1), apolipoprotein B (Apo-B) and Apo-B:Apo-A1 ratio, as well as systemic redox status, i.e. total antioxidant status (TAS), total oxidant status (TOS), oxidative stress index (OSI), vitamin E (VE), vitamin C (VC), malonyldialdehyde (MDA), conjugated dienes (CD), and 4-hydroxynonenal (4-HNE) were determined in 92 LC patients and 82 control subjects (CS). LC women had significantly lower T-C and LDL-C, and higher TG, while HDL-C, Apo-A1 and Apo-B were significantly decreased in LC patients regardless of sex, when compared to CS. LC men had alterations in the systemic total redox balance such as lower TAS and higher OSI than CS men. LC women had lower VC, but VE was decreased in LC patients, regardless of sex. We observed higher lipid peroxidation in LC patients expressed via higher 4-HNE and CD. Systemic redox disturbances were associated with serum lipid alterations: TOS and OSI were positively correlated with T-C:HDL-C ratio and Apo-B:Apo-A1 ratio and negatively with HDL-C. The parameters of lipid peroxidation CD and MDA were significantly associated with variables reflecting lipid disturbances. The observed correlations were strengthened by general overweight/obesity, abdominal obesity, hypertriglyceridemia and non-smoking status. In conclusion, parameters related to lipid alterations are associated with oxidative stress in LC patients. The largest contribution from lipid parameters was revealed for T-C:HDL-C ratio, HDL-C and Apo-B:Apo-A1 ratio, while the largest contribution from redox status was revealed for OSI and VE. Overweight, obesity, hypertriglyceridemia and non-smoking status intensified these relationships.
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Approaches and Methods to Measure Oxidative Stress in Clinical Samples: Research Applications in the Cancer Field. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:1279250. [PMID: 30992736 PMCID: PMC6434272 DOI: 10.1155/2019/1279250] [Citation(s) in RCA: 186] [Impact Index Per Article: 37.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 01/31/2019] [Indexed: 12/24/2022]
Abstract
Reactive oxygen species (ROS) are common by-products of normal aerobic cellular metabolism and play important physiological roles in intracellular cell signaling and homeostasis. The human body is equipped with antioxidant systems to regulate the levels of these free radicals and maintain proper physiological function. However, a condition known as oxidative stress (OS) occurs, when ROS overwhelm the body's ability to readily detoxify them. Excessive amounts of free radicals generated under OS conditions cause oxidative damage to proteins, lipids, and nucleic acids, severely compromising cell health and contributing to disease development, including cancer. Biomarkers of OS can therefore be exploited as important tools in the assessment of disease status in humans. In the present review, we discuss different approaches used for the evaluation of OS in clinical samples. The described methods are limited in their ability to reflect on OS only partially, revealing the need of more integrative approaches examining both pro- and antioxidant reactions with higher sensitivity to physiological/pathological alternations. We also provide an overview of recent findings of OS in patients with different types of cancer. Identification of OS biomarkers in clinical samples of cancer patients and defining their roles in carcinogenesis hold great promise in promoting the development of targeted therapeutic approaches and diagnostic strategies assessing disease status. However, considerable data variability across laboratories makes it difficult to draw general conclusions on the significance of these OS biomarkers. To our knowledge, no adequate comparison has yet been performed between different biomarkers and the methodologies used to measure them, making it difficult to conduct a meta-analysis of findings from different groups. A critical evaluation and adaptation of proposed methodologies available in the literature should therefore be undertaken, to enable the investigators to choose the most suitable procedure for each chosen biomarker.
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Aybastıer Ö, Dawbaa S, Demir C, Akgün O, Ulukaya E, Arı F. Quantification of DNA damage products by gas chromatography tandem mass spectrometry in lung cell lines and prevention effect of thyme antioxidants on oxidative induced DNA damage. Mutat Res 2018; 808:1-9. [PMID: 29366947 DOI: 10.1016/j.mrfmmm.2018.01.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 01/15/2018] [Accepted: 01/16/2018] [Indexed: 06/07/2023]
Abstract
Lung cancer has a high treatment cost and poor prognosis in comparison to other types of cancers. This work was involved in studying oxidative DNA base damage inhibition. Accordingly, standard carvacrol, thymol, thymoquinone with water and water-methanol extract of thyme (Origanum vulgare L. subsp. hirtum (link.) Ietswaart), thyme oil and thyme water were prepared and investigated for their efficacy to inhibit DNA oxidative damage formed by H2O2 in malignant lung cells (A549). The antioxidant capacity by ABTS assay was 271.73 ± 11.45 mg trolox equivalent/mL for thyme oil. HPLC analysis was carried out to determine the contents of different thyme extracts, results showing the presence of carvacrol, thymol, protocatechuic acid, caffeic acid, epicatechin and rosmarinic acid in water and water-methanol extracts while only carvacrol and thymol were found in thyme oil and thyme water. After DNA isolation from the cultured cells, the formed oxidative induced DNA damage products were analysed using GC-MS/MS. It was proven that the antioxidants in the cell culture media have succeeded to inhibit oxidative DNA base damage. Thymoquinone was shown to be the best protectant antioxidant among other antioxidants against the formation of oxidative DNA damage, whereas water-methanol extract of thyme was the best among the plant-sourced samples. Thymoquinone and thyme water-methanol extract were investigated for their efficacy on cultured healthy lung cells (BEAS-2B), and it was proven that they are efficient in protection against the oxidation of DNA of healthy lung cells too.
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Affiliation(s)
- Önder Aybastıer
- University of Uludag, Faculty of Science and Arts, Department of Chemistry, 16059 Bursa, Turkey
| | - Sam Dawbaa
- University of Uludag, Faculty of Science and Arts, Department of Chemistry, 16059 Bursa, Turkey; Thamar University, Faculty of Medicine and Health Sciences, Department of Pharmacy, Dhamar, Yemen
| | - Cevdet Demir
- University of Uludag, Faculty of Science and Arts, Department of Chemistry, 16059 Bursa, Turkey.
| | - Oğuzhan Akgün
- University of Uludag, Faculty of Science and Arts, Department of Biology, 16059 Bursa, Turkey
| | - Engin Ulukaya
- University of İstinye, Faculty of Medicine, Department of Medical Biochemistry, İstanbul, Turkey
| | - Ferda Arı
- University of Uludag, Faculty of Science and Arts, Department of Biology, 16059 Bursa, Turkey
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11
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Gecit İ, Eryılmaz R, Kavak S, Meral İ, Demir H, Pirinççi N, Güneş M, Taken K. The Prolidase Activity, Oxidative Stress, and Nitric Oxide Levels of Bladder Tissues with or Without Tumor in Patients with Bladder Cancer. J Membr Biol 2017; 250:455-459. [PMID: 28815271 DOI: 10.1007/s00232-017-9971-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Accepted: 07/18/2017] [Indexed: 10/19/2022]
Abstract
This study was designed to evaluate the malondialdehyde (MDA), glutathione (GSH) and nitric oxide (NO) levels, and also prolidase, glutathione peroxidase (GSH-Px), superoxide dismutase (SOD) enzyme activities in malignant and benign cancers of bladder tissue. A total of 59 patients admitted to our clinic due to microscopic or macroscopic haematuria, were prospectively included in the study. Because of some reasons (no request to participate in the study, the inability to reach, other malignancies, alcohol consumption, metabolic disease), eight patients were excluded from study. Of the 51 patients, 25 were bladder tumor patients, and 26 were patients without cancers. The bladder tissue samples were obtained from all patients under anesthesia (spinal, epidural or general) for the measurement of MDA, GSH and NO levels, and prolidase, GSH-Px and SOD enzyme activities. Among the patients with bladder cancers, 7 patients were females and 18 patients were males, with an average age of 68.4 ± 2.49. Among patients without tumors, 6 patients were females and 20 patients were males, with an average age of 58 ± 2.05. In patients with bladder tumors, the oxidants (MDA, NO, prolidase) were higher, and the antioxidants (SOD, GSH, GSH-Px) were lower than those in patients without tumors. It was concluded that the oxygen free radicals play a role in the etiology of bladder cancers similar to many other tumors and inflammatory conditions. Therefore, we assume that antioxidants may provide benefits in the prevention and treatment of bladder cancer.
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Affiliation(s)
- İlhan Gecit
- Department of Urology, Faculty of Medicine, İnonu University, Malatya, Turkey.
| | - Recep Eryılmaz
- Department of Urology, Faculty of Medicine, Yuzuncu Yil University, Van, Turkey
| | - Servet Kavak
- Department of Biophysics, Faculty of Medicine, Muğla Sıtkı Koçman University, Muğla, Turkey
| | - İsmail Meral
- Department of Physiology, School of Medicine, Bezmialem Vakif University, İstanbul, Turkey
| | - Halit Demir
- Division of Biochemistry, Department of Chemistry, Faculty of Science, Yuzuncu Yil University, Van, Turkey
| | - Necip Pirinççi
- Department of Urology, Faculty of Medicine, Fırat University, Elazığ, Turkey
| | - Mustafa Güneş
- Department of Urology, Faculty of Medicine, Yuzuncu Yil University, Van, Turkey
| | - Kerem Taken
- Department of Urology, Faculty of Medicine, Yuzuncu Yil University, Van, Turkey
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12
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Sun X, Zhong Y, Luo H, Yang Y. Selenium-Containing Polysaccharide-Protein Complex in Se-Enriched Ulva fasciata Induces Mitochondria-Mediated Apoptosis in A549 Human Lung Cancer Cells. Mar Drugs 2017; 15:md15070215. [PMID: 28714901 PMCID: PMC5532657 DOI: 10.3390/md15070215] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Revised: 06/18/2017] [Accepted: 07/01/2017] [Indexed: 12/17/2022] Open
Abstract
The role of selenium (Se) and Ulva fasciata as potent cancer chemopreventive and chemotherapeutic agents has been supported by epidemiological, preclinical, and clinical studies. In this study, Se-containing polysaccharide-protein complex (Se-PPC), a novel organoselenium compound, a Se-containing polysaccharide-protein complex in Se-enriched Ulva fasciata, is a potent anti-proliferative agent against human lung cancer A549 cells. Se-PPC markedly inhibited the growth of cancer cells via induction of apoptosis which was accompanied by the formation of apoptotic bodies, an increase in the population of apoptotic sub-G1 phase cells, upregulation of p53, and activation of caspase-3 in A549 cells. Further investigation on intracellular mechanisms indicated that cytochrome C was released from mitochondria into cytosol in A549 cells after Se-PPC treatment. Se-PPC induced depletion of mitochondrial membrane potential (ΔΨm) in A549 cells through regulating the expression of anti-apoptotic (Bcl-2, Bcl-XL) and pro-apoptotic (Bax, Bid) proteins, resulting in disruption of the activation of caspase-9. This is the first report to demonstrate the cytotoxic effect of Se-PPC on human cancer cells and to provide a possible mechanism for this activity. Thus, Se-PPC is a promising novel organoselenium compound with potential to treat human cancers.
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Affiliation(s)
- Xian Sun
- Institute of Hydrobiology, Jinan University, Jinan 510632, China.
- Key Laboratory of Aquatic Eutrophication and Control of Harmful Algal Blooms, Guangdong Higher Education Institutes, Guangzhou 510632, China.
| | - Yu Zhong
- Institute of Hydrobiology, Jinan University, Jinan 510632, China.
- Key Laboratory of Aquatic Eutrophication and Control of Harmful Algal Blooms, Guangdong Higher Education Institutes, Guangzhou 510632, China.
| | - Hongtian Luo
- Institute of Hydrobiology, Jinan University, Jinan 510632, China.
- Key Laboratory of Aquatic Eutrophication and Control of Harmful Algal Blooms, Guangdong Higher Education Institutes, Guangzhou 510632, China.
| | - Yufeng Yang
- Institute of Hydrobiology, Jinan University, Jinan 510632, China.
- Key Laboratory of Aquatic Eutrophication and Control of Harmful Algal Blooms, Guangdong Higher Education Institutes, Guangzhou 510632, China.
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Mandal P. Potential biomarkers associated with oxidative stress for risk assessment of colorectal cancer. Naunyn Schmiedebergs Arch Pharmacol 2017; 390:557-565. [PMID: 28229171 DOI: 10.1007/s00210-017-1352-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2016] [Accepted: 01/30/2017] [Indexed: 02/07/2023]
Abstract
Cells are continuously threatened by the damage caused by reactive oxygen/nitrogen species (ROS/RNS), which are produced during physiological oxygen metabolism. In our review, we will summarize the latest reports on the role of oxidative stress and oxidative stress-induced signaling pathways in the etiology of colorectal cancer. The differences in ROS generation may influence the levels of oxidized proteins, lipids, and DNA damage, thus contributing to the higher susceptibility of colon. Reactive species (RS) of various types are formed and are powerful oxidizing agents, capable of damaging DNA and other biomolecules. Increased formation of RS can promote the development of malignancy, and the "normal" rates of RS generation may account for the increased risk of cancer development in the aged. In this review, we focus on the role of oxidative stress in the etiology of colorec-tal cancer and discuss free radicals and free radical-stimulated pathways in colorectal carcinogenesis.
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Affiliation(s)
- Paramita Mandal
- Department of Zoology, The University of Burdwan, Burdwan, 713104, West Bengal, India.
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Repair of oxidatively induced DNA damage by DNA glycosylases: Mechanisms of action, substrate specificities and excision kinetics. MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH 2017; 771:99-127. [PMID: 28342455 DOI: 10.1016/j.mrrev.2017.02.001] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Indexed: 02/07/2023]
Abstract
Endogenous and exogenous reactive species cause oxidatively induced DNA damage in living organisms by a variety of mechanisms. As a result, a plethora of mutagenic and/or cytotoxic products are formed in cellular DNA. This type of DNA damage is repaired by base excision repair, although nucleotide excision repair also plays a limited role. DNA glycosylases remove modified DNA bases from DNA by hydrolyzing the glycosidic bond leaving behind an apurinic/apyrimidinic (AP) site. Some of them also possess an accompanying AP-lyase activity that cleaves the sugar-phosphate chain of DNA. Since the first discovery of a DNA glycosylase, many studies have elucidated the mechanisms of action, substrate specificities and excision kinetics of these enzymes present in all living organisms. For this purpose, most studies used single- or double-stranded oligodeoxynucleotides with a single DNA lesion embedded at a defined position. High-molecular weight DNA with multiple base lesions has been used in other studies with the advantage of the simultaneous investigation of many DNA base lesions as substrates. Differences between the substrate specificities and excision kinetics of DNA glycosylases have been found when these two different substrates were used. Some DNA glycosylases possess varying substrate specificities for either purine-derived lesions or pyrimidine-derived lesions, whereas others exhibit cross-activity for both types of lesions. Laboratory animals with knockouts of the genes of DNA glycosylases have also been used to provide unequivocal evidence for the substrates, which had previously been found in in vitro studies, to be the actual substrates in vivo as well. On the basis of the knowledge gained from the past studies, efforts are being made to discover small molecule inhibitors of DNA glycosylases that may be used as potential drugs in cancer therapy.
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Loilome W, Kadsanit S, Muisook K, Yongvanit P, Namwat N, Techasen A, Puapairoj A, Khuntikeo N, Phonjit P. Imbalanced adaptive responses associated with microsatellite instability in cholangiocarcinoma. Oncol Lett 2016; 13:639-646. [PMID: 28356940 PMCID: PMC5351183 DOI: 10.3892/ol.2016.5477] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Accepted: 10/25/2016] [Indexed: 11/10/2022] Open
Abstract
The adaptive response of the genome protection mechanism occurs in cells when exposed to genotoxic stress due to the overproduction of free radicals via inflammation and infection. In such circumstances, cells attempt to maintain health via several genome protection mechanisms. However, evidence is increasing that this adaptive response may have deleterious effect; a reduction of antioxidant enzymes and/or imbalance in the DNA repair system generates microsatellite instability (MSI), which has procarcinogenic implications. Therefore, the present study hypothesized that MSI caused by imbalanced responses of antioxidant enzymes and/or DNA repair enzymes as a result of oxidative/nitrative stress arising from the inflammatory response is involved in liver fluke-associated cholangiocarcinogenesis. The present study investigated this hypothesis by identifying the expression patterns of antioxidant enzymes, including superoxide dismutase 2 (SOD2) and catalase (CAT), and DNA repair enzymes, including alkyladenine DNA glycosylase (AAG), apurinic endonuclease (APE) and DNA polymerase β (DNA pol β). In addition, the activities of the antioxidant enzymes, SOD2 and CAT, were examined in human cholangiocarcinoma (CCA) tissues using immunohistochemical staining. MSI was also analyzed in human CCA tissues. The resulting data demonstrated that the expression levels of the SOD2 and CAT enzymes decreased. The activities of SOD2 and CAT decreased significantly in the CCA tissues, compared with the hepatic tissue of cadaveric donors. In the DNA repairing enzymes, it was found that the expression levels of AAG and DNA pol β enzymes increased, whereas the expression of APE decreased. In addition, it was found that MSI-high was present in 69% of patients, whereas MSI-low was present in 31% of patients, with no patients classified as having microsatellite stability. In the patients, a MSI-high was correlated with poor prognosis, indicated by a shorter survival rate. These results indicated that the reduction of antioxidant enzymes and adaptive imbalance of base excision repair enzymes in human CCA caused MSI, and may be associated with the progression of cancer.
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Affiliation(s)
- Watcharin Loilome
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Liver Fluke and Cholangiocarcinoma Research Center, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Sasithorn Kadsanit
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Liver Fluke and Cholangiocarcinoma Research Center, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Kanha Muisook
- Department of Forensics Science, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Puangrat Yongvanit
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Liver Fluke and Cholangiocarcinoma Research Center, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Nisana Namwat
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Liver Fluke and Cholangiocarcinoma Research Center, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Anchalee Techasen
- Liver Fluke and Cholangiocarcinoma Research Center, Khon Kaen University, Khon Kaen 40002, Thailand; Department of Medical Technology, Faculty of Associated Medical Science, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Anucha Puapairoj
- Liver Fluke and Cholangiocarcinoma Research Center, Khon Kaen University, Khon Kaen 40002, Thailand; Department of Pathology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Narong Khuntikeo
- Liver Fluke and Cholangiocarcinoma Research Center, Khon Kaen University, Khon Kaen 40002, Thailand; Department of Surgery, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Pichai Phonjit
- Department of Surgery, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
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16
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Li P, Ramm GA, Macdonald GA. Value of the 8-oxodG/dG ratio in chronic liver inflammation of patients with hepatocellular carcinoma. Redox Biol 2016; 8:259-70. [PMID: 26890046 PMCID: PMC4761657 DOI: 10.1016/j.redox.2016.02.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Revised: 02/03/2016] [Accepted: 02/08/2016] [Indexed: 02/07/2023] Open
Abstract
The aim of this study was to examine the role of oxidative DNA damage in chronic liver inflammation in the evolution of hepatocellular carcinoma. The accumulated data demonstrated that oxidative DNA damage and chronic liver inflammation are involved in the transformation of normal hepatocytes and their evolution towards hepatocellular carcinoma. However, the levels of 8-oxy-2'-deoxy-guanosine (8-oxodG), a biomarker of oxidative DNA damage, were overestimated and underestimated in previous reports due to various technical limitations. The current techniques are not suitable to analyze the 8-oxodG levels in the non-malignant liver tissues and tumors of hepatocellular carcinoma patients unless they are modified. Therefore, in this study, the protocols for extraction and hydrolysis of DNA were optimized using 54 samples from hepatocellular carcinoma patients with various risk factors, and the 8-oxodG and 2'-deoxyguanosine (dG) levels were measured. The patients enrolled in the study include 23 from The Princess Alexandra Hospital and The Royal Brisbane and Women's Hospitals, Brisbane, Australia, and 31 from South Africa. This study revealed that the 8-oxodG/dG ratios tended to be higher in most non-malignant liver tissues compared to hepatocellular carcinoma tissue (p=0.2887). It also appeared that the ratio was higher in non-malignant liver tissue from Southern African patients (p=0.0479), but there was no difference in the 8-oxodG/dG ratios between non-malignant liver tissues and tumors of Australian hepatocellular carcinoma patients (p=0.7722). Additionally, this study also revealed a trend for a higher 8-oxodG/dG ratio in non-malignant liver tissues compared to tumoural tissues of patients with HBV. Significant differences were not observed in the 8-oxodG/dG ratios between non-cirrhotic and cirrhotic non-malignant liver tissues.
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Affiliation(s)
- Pengcheng Li
- The Medical School, The University of Queensland, QLD 4006, Australia.
| | - Grant A Ramm
- The Medical School, The University of Queensland, QLD 4006, Australia; Hepatic Fibrosis, QIMR Berghofer Medical Research Institute, QLD 4029, Australia
| | - Graeme A Macdonald
- The Medical School, The University of Queensland, QLD 4006, Australia; Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, QLD 4102, Australia
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17
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Donley N, Jaruga P, Coskun E, Dizdaroglu M, McCullough AK, Lloyd RS. Small Molecule Inhibitors of 8-Oxoguanine DNA Glycosylase-1 (OGG1). ACS Chem Biol 2015. [PMID: 26218629 DOI: 10.1021/acschembio.5b00452] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The DNA base excision repair (BER) pathway, which utilizes DNA glycosylases to initiate repair of specific DNA lesions, is the major pathway for the repair of DNA damage induced by oxidation, alkylation, and deamination. Early results from clinical trials suggest that inhibiting certain enzymes in the BER pathway can be a useful anticancer strategy when combined with certain DNA-damaging agents or tumor-specific genetic deficiencies. Despite this general validation of BER enzymes as drug targets, there are many enzymes that function in the BER pathway that have few, if any, specific inhibitors. There is a growing body of evidence that suggests inhibition of 8-oxoguanine DNA glycosylase-1 (OGG1) could be useful as a monotherapy or in combination therapy to treat certain types of cancer. To identify inhibitors of OGG1, a fluorescence-based screen was developed to analyze OGG1 activity in a high-throughput manner. From a primary screen of ∼50,000 molecules, 13 inhibitors were identified, 12 of which were hydrazides or acyl hydrazones. Five inhibitors with an IC50 value of less than 1 μM were chosen for further experimentation and verified using two additional biochemical assays. None of the five OGG1 inhibitors reduced DNA binding of OGG1 to a 7,8-dihydro-8-oxoguanine (8-oxo-Gua)-containing substrate, but all five inhibited Schiff base formation during OGG1-mediated catalysis. All of these inhibitors displayed a >100-fold selectivity for OGG1 relative to several other DNA glycosylases involved in repair of oxidatively damaged bases. These inhibitors represent the most potent and selective OGG1 inhibitors identified to date.
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Affiliation(s)
- Nathan Donley
- Oregon Institute of Occupational Health Sciences, Oregon Health & Science University, Portland, Oregon 97239, United States
| | - Pawel Jaruga
- Biomolecular
Measurement Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Erdem Coskun
- Biomolecular
Measurement Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Miral Dizdaroglu
- Biomolecular
Measurement Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Amanda K. McCullough
- Oregon Institute of Occupational Health Sciences, Oregon Health & Science University, Portland, Oregon 97239, United States
| | - R. Stephen Lloyd
- Oregon Institute of Occupational Health Sciences, Oregon Health & Science University, Portland, Oregon 97239, United States
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18
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Álvarez-González I, Islas-Islas V, Chamorro-Cevallos G, Barrios JP, Paniagua N, Vásquez-Garzón VR, Villa-Treviño S, Osiris-Madrigal-Santillán, Morales-González JA, Madrigal-Bujaidar E. Inhibitory Effect of Spirulina maxima on the Azoxymethane-induced Aberrant Colon Crypts and Oxidative Damage in Mice. Pharmacogn Mag 2015; 11:S619-24. [PMID: 27013804 PMCID: PMC4787098 DOI: 10.4103/0973-1296.172973] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Spirulina maxima (Sm) is a cyanobacterium well known because of its high nutritive value, as well as its anti-inflammatory, anti-hyperlipidemic, antioxidant, and anti-genotoxic activities. OBJECTIVE To determine the capacity of Sm to inhibit the induction of aberrant colon crypts (AC), as well as the level of lipid peroxidation and DNA oxidative damage in mice treated with azoxymethane (AOM). MATERIALS AND METHODS Sm (100, 400, and 800 mg/kg) was daily administered to animals by the oral route during 4 weeks, while AOM (10 mg/kg) was intraperitoneally injected to mice twice in weeks 2 and 3 of the assay. We also included a control group of mice orally administered with distilled water along the assay, as well as other group orally administered with the high dose of Sm. RESULTS A significant decrease in the number of AC with the three tested doses of Sm, with a mean protection of 51.6% respect to the damage induced by AOM. Also, with the three doses of the alga, we found a reduction in the level of lipoperoxidation, as well as in regard to the percentage of the DNA adduct 8-hydroxy-2'- deoxyguanosine. CONCLUSION Sm possesses anti-precarcinogenic potential in vivo, as well as capacity to reduce the oxidative damage induced by AOM. SUMMARY Azoxymethane (AOM) induced a high number of colon aberrant crypts in mouse. It also increased the level of peroxidation and of DNA oxidation in the same organ.Spirulina maxima significantly reduced the number of AOM-induced colon aberrant crypts in mouse. It also reduced the AOM-induced lipid and DNA oxidation in mouse.The results suggest a chemopreventive potential for the tested algae.
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Affiliation(s)
- Isela Álvarez-González
- Department of Morphology, Genetics Laboratory, National School of Biological Sciences, National Polytechnic Institute, Av. Wilfredo Massieu s/n. Lindavista, D. F. 07738, México
| | - Víctor Islas-Islas
- Department of Morphology, Genetics Laboratory, National School of Biological Sciences, National Polytechnic Institute, Av. Wilfredo Massieu s/n. Lindavista, D. F. 07738, México
| | - Germán Chamorro-Cevallos
- Department of Pharmacy, Preclinical Toxicology, National School of Biological Sciences, National Polytechnic Institute, Av. Wilfredo Massieu s/n. Lindavista, D. F. 07738, México
| | - Juan Pablo Barrios
- Department of Pharmacy, Preclinical Toxicology, National School of Biological Sciences, National Polytechnic Institute, Av. Wilfredo Massieu s/n. Lindavista, D. F. 07738, México
| | - Norma Paniagua
- Department of Physiology, National School of Biological Sciences, National Polytechnic Institute, Av. Wilfredo Massieu s/n. Lindavista, D. F. 07738, México
| | - Verónica R. Vásquez-Garzón
- Department of Cellular Biology, Center for Research and Advanced Studies, National Polytechnic Institute, Av. Instituto Politécnico Nacional 2508, San Pedro Zacatenco, D.F. 07360, México
- Cathedra-CONACYT, Faculty of Medicine and Surgery, Autonomous University “Benito Juárez” of Oaxaca, Av. Universidad s/n, Exhacienda de Cinco Señores, Oaxaca de Juárez, 68120, México
| | - Saúl Villa-Treviño
- Department of Cellular Biology, Center for Research and Advanced Studies, National Polytechnic Institute, Av. Instituto Politécnico Nacional 2508, San Pedro Zacatenco, D.F. 07360, México
| | - Osiris-Madrigal-Santillán
- Department of Conservation Medicine, Superior School of Medicine, National Polytechnic Institute, Plan de San Luis y Díaz Mirón s/n, Casco de Santo Tomás, D. F. 11340, México
| | - José Antonio Morales-González
- Department of Conservation Medicine, Superior School of Medicine, National Polytechnic Institute, Plan de San Luis y Díaz Mirón s/n, Casco de Santo Tomás, D. F. 11340, México
| | - Eduardo Madrigal-Bujaidar
- Department of Morphology, Genetics Laboratory, National School of Biological Sciences, National Polytechnic Institute, Av. Wilfredo Massieu s/n. Lindavista, D. F. 07738, México
- Correspondence: Dr. Eduardo Madrigal-Bujaidar, Genetics Laboratory, Department of Morphology, National School of Biological Sciences, National Polytechnic Institute, Av. Wilfredo Massieu s/n. Lindavista, D.F. 07738, México E-mail:
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19
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Durham AL, Adcock IM. The relationship between COPD and lung cancer. Lung Cancer 2015; 90:121-7. [PMID: 26363803 PMCID: PMC4718929 DOI: 10.1016/j.lungcan.2015.08.017] [Citation(s) in RCA: 251] [Impact Index Per Article: 27.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 08/24/2015] [Accepted: 08/27/2015] [Indexed: 02/07/2023]
Abstract
COPD is a risk factor for lung cancer beyond their shared aetiology. Both are driven by oxidative stress. Both are linked to cellular aging, senescence and telomere shortening. Both have been linked to genetic predisposition. Both show altered epigenetic regulation of gene expression.
Both COPD and lung cancer are major worldwide health concerns owing to cigarette smoking, and represent a huge, worldwide, preventable disease burden. Whilst the majority of smokers will not develop either COPD or lung cancer, they are closely related diseases, occurring as co-morbidities at a higher rate than if they were independently triggered by smoking. Lung cancer and COPD may be different aspects of the same disease, with the same underlying predispositions, whether this is an underlying genetic predisposition, telomere shortening, mitochondrial dysfunction or premature aging. In the majority of smokers, the burden of smoking may be dealt with by the body’s defense mechanisms: anti-oxidants such as superoxide dismutases, anti-proteases and DNA repair mechanisms. However, in the case of both diseases these fail, leading to cancer if mutations occur or COPD if damage to the cell and proteins becomes too great. Alternatively COPD could be a driving factor in lung cancer, by increasing oxidative stress and the resulting DNA damage, chronic exposure to pro-inflammatory cytokines, repression of the DNA repair mechanisms and increased cellular proliferation. Understanding the mechanisms that drive these processes in primary cells from patients with these diseases along with better disease models is essential for the development of new treatments.
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Affiliation(s)
- A L Durham
- Airway Disease Section, National Heart and Lung Institute, Imperial College London, Dovehouse Street, London, UK.
| | - I M Adcock
- Airway Disease Section, National Heart and Lung Institute, Imperial College London, Dovehouse Street, London, UK
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20
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Interaction with OGG1 is required for efficient recruitment of XRCC1 to base excision repair and maintenance of genetic stability after exposure to oxidative stress. Mol Cell Biol 2015; 35:1648-58. [PMID: 25733688 DOI: 10.1128/mcb.00134-15] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Accepted: 02/25/2015] [Indexed: 12/20/2022] Open
Abstract
XRCC1 is an essential protein required for the maintenance of genomic stability through its implication in DNA repair. The main function of XRCC1 is associated with its role in the single-strand break (SSB) and base excision repair (BER) pathways that share several enzymatic steps. We show here that the polymorphic XRCC1 variant R194W presents a defect in its interaction with the DNA glycosylase OGG1 after oxidative stress. While proficient for single-strand break repair (SSBR), this variant does not colocalize with OGG1, reflecting a defect in its involvement in BER. Consistent with a role of XRCC1 in the coordination of the BER pathway, induction of oxidative base damage in XRCC1-deficient cells complemented with the R194W variant results in increased genetic instability as revealed by the accumulation of micronuclei. These data identify a specific molecular role for the XRCC1-OGG1 interaction in BER and provide a model for the effects of the R194W variant identified in molecular cancer epidemiology studies.
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21
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da Motta LL, De Bastiani MA, Stapenhorst F, Klamt F. Oxidative stress associates with aggressiveness in lung large-cell carcinoma. Tumour Biol 2015; 36:4681-8. [PMID: 25638031 DOI: 10.1007/s13277-015-3116-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Accepted: 01/14/2015] [Indexed: 12/12/2022] Open
Abstract
Oxidative stress is involved in many cancer-related processes; however, current therapeutics are unable to benefit from this approach. The lungs have a very exquisite redox environment that may contribute to the frequent and deadly nature of lung cancer. Very few studies specifically address lung large-cell carcinoma (LCC), even though this is one of the major subtypes. Using bioinformatic (in silico) tools, we demonstrated that a more aggressive lung LCC cell line (HOP-92) has an overall increase activity of the human antioxidant gene (HAG) network (P = 0.0046) when compared to the less aggressive cell line H-460. Gene set enrichment analysis (GSEA) showed that the expression of metallothioneins (MT), glutathione peroxidase 1 (GPx-1), and catalase (CAT) are responsible for this difference in gene signature. This was validated in vitro, where HOP-92 showed a pro-oxidative imbalance, presenting higher antioxidant enzymes (superoxide dismutase (SOD), CAT, and GPx) activities, lower reduced sulfhydryl groups and antioxidant potential, and higher lipoperoxidation and reactive species production. Also, HAG network is upregulated in lung LCC patients with worst outcome. Finally, the prognostic value of genes enriched in the most aggressive cell line was assessed in this cohort. Isoforms of metallothioneins are associated with bad prognosis, while the thioredoxin-interacting protein (TXNIP) is associated with good prognosis. Thus, redox metabolism can be an important aspect in lung LCC aggressiveness and a possible therapeutic target.
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Affiliation(s)
- Leonardo Lisboa da Motta
- Laboratory of Cellular Biochemistry, Department of Biochemistry, ICBS/UFRGS, 2600 Ramiro Barcelos St - lab. 24, 90035-003, Porto Alegre, RS, Brazil,
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22
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Dziaman T, Ludwiczak H, Ciesla JM, Banaszkiewicz Z, Winczura A, Chmielarczyk M, Wisniewska E, Marszalek A, Tudek B, Olinski R. PARP-1 expression is increased in colon adenoma and carcinoma and correlates with OGG1. PLoS One 2014; 9:e115558. [PMID: 25526641 PMCID: PMC4272268 DOI: 10.1371/journal.pone.0115558] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 11/24/2014] [Indexed: 12/18/2022] Open
Abstract
The ethiology of colon cancer is largely dependent on inflammation driven oxidative stress. The analysis of 8-oxodeoxyguanosine (8-oxodGuo) level in leukocyte DNA of healthy controls (138 individuals), patients with benign adenomas (AD, 137 individuals) and with malignant carcinomas (CRC, 169 individuals) revealed a significant increase in the level of 8-oxodGuo in leukocyte DNA of AD and CRC patients in comparison to controls. The counteracting mechanism is base excision repair, in which OGG1 and PARP-1 play a key role. We investigated the level of PARP-1 and OGG1 mRNA and protein in diseased and marginal, normal tissues taken from AD and CRC patients and in leukocytes taken from the patients as well as from healthy subjects. In colon tumors the PARP-1 mRNA level was higher than in unaffected colon tissue and in polyp tissues. A high positive correlation was found between PARP-1 and OGG1 mRNA levels in all investigated tissues. This suggests reciprocal influence of PARP-1 and OGG1 on their expression and stability, and may contribute to progression of colon cancer. PARP-1 and OGG1 proteins level was several fold higher in polyps and CRC in comparison to normal colon tissues. Individuals bearing the Cys326Cys genotype of OGG1 were characterized by higher PARP-1 protein level in diseased tissues than the Ser326Cys and Ser326Ser genotypes. Aforementioned result may suggest that the diseased cells with polymorphic OGG1 recruit more PARP protein, which is necessary to remove 8-oxodGuo. Thus, patients with decreased activity of OGG1/polymorphism of the OGG1 gene and higher 8-oxodGuo level may be more susceptible to treatment with PARP-1 inhibitors.
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Affiliation(s)
- Tomasz Dziaman
- Department of Clinical Biochemistry, Collegium Medicum, Nicolaus Copernicus University, Karlowicza 24, PO-85-092 Bydgoszcz, Poland
| | - Hubert Ludwiczak
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawinskiego 5a, PO-02-106 Warsaw, Poland
| | - Jaroslaw M. Ciesla
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawinskiego 5a, PO-02-106 Warsaw, Poland
| | - Zbigniew Banaszkiewicz
- Department of Surgery, Collegium Medicum, Nicolaus Copernicus University, Ujejskiego 75, Bydgoszcz, Poland
| | - Alicja Winczura
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawinskiego 5a, PO-02-106 Warsaw, Poland
| | - Mateusz Chmielarczyk
- Institute of Genetics and Biotechnology, Faculty of Biology, University of Warsaw, Pawinskiego 5a, PO-02-106 Warsaw, Poland
| | - Ewa Wisniewska
- Department of Clinical Pathomorphology, Collegium Medicum, Nicolaus Copernicus University, Sklodowskiej-Curie 9, PO-85-092 Bydgoszcz, Poland
| | - Andrzej Marszalek
- Department of Clinical Pathomorphology, Collegium Medicum, Nicolaus Copernicus University, Sklodowskiej-Curie 9, PO-85-092 Bydgoszcz, Poland
| | - Barbara Tudek
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawinskiego 5a, PO-02-106 Warsaw, Poland
- Institute of Genetics and Biotechnology, Faculty of Biology, University of Warsaw, Pawinskiego 5a, PO-02-106 Warsaw, Poland
- * E-mail: (RO); (BT)
| | - Ryszard Olinski
- Department of Clinical Biochemistry, Collegium Medicum, Nicolaus Copernicus University, Karlowicza 24, PO-85-092 Bydgoszcz, Poland
- * E-mail: (RO); (BT)
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Oxidatively induced DNA damage and its repair in cancer. MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH 2014; 763:212-45. [PMID: 25795122 DOI: 10.1016/j.mrrev.2014.11.002] [Citation(s) in RCA: 173] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Revised: 11/03/2014] [Accepted: 11/04/2014] [Indexed: 12/28/2022]
Abstract
Oxidatively induced DNA damage is caused in living organisms by endogenous and exogenous reactive species. DNA lesions resulting from this type of damage are mutagenic and cytotoxic and, if not repaired, can cause genetic instability that may lead to disease processes including carcinogenesis. Living organisms possess DNA repair mechanisms that include a variety of pathways to repair multiple DNA lesions. Mutations and polymorphisms also occur in DNA repair genes adversely affecting DNA repair systems. Cancer tissues overexpress DNA repair proteins and thus develop greater DNA repair capacity than normal tissues. Increased DNA repair in tumors that removes DNA lesions before they become toxic is a major mechanism for development of resistance to therapy, affecting patient survival. Accumulated evidence suggests that DNA repair capacity may be a predictive biomarker for patient response to therapy. Thus, knowledge of DNA protein expressions in normal and cancerous tissues may help predict and guide development of treatments and yield the best therapeutic response. DNA repair proteins constitute targets for inhibitors to overcome the resistance of tumors to therapy. Inhibitors of DNA repair for combination therapy or as single agents for monotherapy may help selectively kill tumors, potentially leading to personalized therapy. Numerous inhibitors have been developed and are being tested in clinical trials. The efficacy of some inhibitors in therapy has been demonstrated in patients. Further development of inhibitors of DNA repair proteins is globally underway to help eradicate cancer.
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The hOGG1 Ser326Cys polymorphism contributes to digestive system cancer susceptibility: evidence from 48 case-control studies. Tumour Biol 2014; 36:1029-38. [PMID: 25323581 DOI: 10.1007/s13277-014-2710-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Accepted: 02/10/2014] [Indexed: 12/13/2022] Open
Abstract
The Ser326Cys polymorphism in the human 8-oxogunaine DNA glycosylase (hOGG1) gene had been implicated in cancer susceptibility. Studies investigating the associations between the Ser326Cys polymorphism and digestion cancer susceptibility showed conflicting results. Therefore, a meta-analysis was performed to derive a more precise estimation of the relationship. We conducted a meta-analysis of 48 studies that included 12,073 cancer cases and 19,557 case-free controls. We assessed the strength of the association using odds ratios (ORs) with 95% confidence intervals (CIs). In our analysis, the hOGG1 Ser326Cys polymorphism was significantly associated with the risk of digestive system cancers (Cys/Cys vs. Ser/Ser: OR = 1.17, 95% CI = 1.00-1.35, P < 0.001; Cys/Cys vs. Cys/Ser + Ser/Ser: OR = 1.14, 95% CI = 1.00-1.29, P < 0.001). In subgroup analyses by cancer types, we found that the hOGG1 Ser326Cys polymorphism may increase hepatocellular cancer and colorectal cancer risks, but decrease the risk of oral cancer. These findings supported that hOGG1 Ser326Cys polymorphism may contribute to the susceptibility of digestive cancers.
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Liu K, Lin X, Zhou Q, Ma T, Han L, Mao G, Chen J, Yue X, Wang H, Zhang L, Jin G, Jiang J, Zhao J, Zou B. The associations between two vital GSTs genetic polymorphisms and lung cancer risk in the Chinese population: evidence from 71 studies. PLoS One 2014; 9:e102372. [PMID: 25036724 PMCID: PMC4103841 DOI: 10.1371/journal.pone.0102372] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Accepted: 06/17/2014] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND The genetic polymorphisms of glutathione S-transferase (GSTs) have been suspected to be related to the development of lung cancer while the current results are conflicting, especially in the Chinese population. METHODS Data on genetic polymorphisms of glutathione S-transferase Mu 1 (GSTM1) from 68 studies, glutathione S-transferase theta 1 (GSTT1) from 17 studies and GSTM1-GSTT1 from 8 studies in the Chinese population were reanalyzed on their association with lung cancer risk. Odds ratios (OR) were pooled using forest plots. 9 subgroups were all or partly performed in the subgroup analyses. The Galbraith plot was used to identify the heterogeneous records. Potential publication biases were detected by Begg's and Egger's tests. RESULTS 71 eligible studies were identified after screening of 1608 articles. The increased association between two vital GSTs genetic polymorphisms and lung cancer risk was detected by random-effects model based on a comparable heterogeneity. Subgroup analysis showed a significant relationship between squamous carcinoma (SC), adenocarcinoma (AC) or small cell lung carcinoma (SCLC) and GSTM1 null genotype, as well as SC or AC and GSTT1 null genotype. Additionally, smokers with GSTM1 null genotype had a higher lung cancer risk than non-smokers. Our cumulative meta-analysis demonstrated a stable and reliable result of the relationship between GSTM1 null genotype and lung cancer risk. After the possible heterogeneous articles were omitted, the adjusted risk of GSTs and lung cancer susceptibility increased (fixed-effects model: ORGSTM1 = 1.23, 95% CI: 1.19 to 1.27, P<0.001; ORGSTT1 = 1.18, 95% CI: 1.10 to 1.26, P<0.001; ORGSTM1-GSTT1 = 1.33, 95% CI: 1.10 to 1.61, P = 0.004). CONCLUSIONS An increased risk of lung cancer with GSTM1 and GSTT1 null genotype, especially with dual null genotype, was found in the Chinese population. In addition, special histopathological classification of lung cancers and a wide range of gene-environment and gene-gene interaction analysis should be taken into consideration in future studies.
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Affiliation(s)
- Kui Liu
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, School of Medicine, Ningbo University, Ningbo, Zhejiang Province, People's Republic of China
- Department of Science Research and Information Management,Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, Zhejiang Province, People's Republic of China
| | - Xialu Lin
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, School of Medicine, Ningbo University, Ningbo, Zhejiang Province, People's Republic of China
| | - Qi Zhou
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, School of Medicine, Ningbo University, Ningbo, Zhejiang Province, People's Republic of China
| | - Ting Ma
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, School of Medicine, Ningbo University, Ningbo, Zhejiang Province, People's Republic of China
- Department of Science Research and Information Management,Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, Zhejiang Province, People's Republic of China
| | - Liyuan Han
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, School of Medicine, Ningbo University, Ningbo, Zhejiang Province, People's Republic of China
| | - Guochuan Mao
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, School of Medicine, Ningbo University, Ningbo, Zhejiang Province, People's Republic of China
- Municipal Center for Disease Prevention and Control of Ningbo City, Ningbo, Zhejiang Province, People's Republic of China
| | - Jian Chen
- Department of Epidemiology and Health Statistic, Anhui Medical University, Hefei, Anhui Province, People's Republic of China
| | - Xia Yue
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, School of Medicine, Ningbo University, Ningbo, Zhejiang Province, People's Republic of China
| | - Huiqin Wang
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, School of Medicine, Ningbo University, Ningbo, Zhejiang Province, People's Republic of China
| | - Lu Zhang
- School of Health Management, Anhui Medical University, Hefei, Anhui Province, People's Republic of China
| | - Guixiu Jin
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, School of Medicine, Ningbo University, Ningbo, Zhejiang Province, People's Republic of China
| | - Jianmin Jiang
- Department of Science Research and Information Management,Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, Zhejiang Province, People's Republic of China
| | - Jinshun Zhao
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, School of Medicine, Ningbo University, Ningbo, Zhejiang Province, People's Republic of China
| | - Baobo Zou
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, School of Medicine, Ningbo University, Ningbo, Zhejiang Province, People's Republic of China
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26
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Sarıözkan S, Tuncer PB, Büyükleblebici S, Bucak MN, Cantürk F, Eken A. Antioxidative effects of cysteamine, hyaluronan and fetuin on post-thaw semen quality, DNA integrity and oxidative stress parameters in the Brown Swiss bull. Andrologia 2014; 47:138-47. [DOI: 10.1111/and.12236] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/12/2013] [Indexed: 11/28/2022] Open
Affiliation(s)
- S. Sarıözkan
- Faculty of Veterinary Medicine; Department of Reproduction and Artificial Insemination; Erciyes University; Kayseri Turkey
- Genome and Stem Cell Center-GENKOK; Erciyes University; Kayseri Turkey
| | - P. B. Tuncer
- Republic of Turkey Ministry of Food, Agriculture and Livestock; General Directorate of Food and Control; Ankara Turkey
| | - S. Büyükleblebici
- Faculty of Veterinary Medicine; Department of Reproduction and Artificial Insemination; Aksaray University; Aksaray Turkey
| | - M. N. Bucak
- Faculty of Veterinary Medicine; Department of Reproduction and Artificial Insemination; Selcuk University; Konya Turkey
| | - F. Cantürk
- Faculty of Medicine; Department of Basic Sciences; Erciyes University; Kayseri Turkey
| | - A. Eken
- Faculty of Pharmacy; Department of Pharmaceutical Toxicology; Erciyes University; Kayseri Turkey
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27
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Yin M, Ren X, Zhang X, Luo Y, Wang G, Huang K, Feng S, Bao X, Huang K, He X, Liang P, Wang Z, Tang H, He J, Zhang B. Selective killing of lung cancer cells by miRNA-506 molecule through inhibiting NF-κB p65 to evoke reactive oxygen species generation and p53 activation. Oncogene 2014; 34:691-703. [PMID: 24469051 DOI: 10.1038/onc.2013.597] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Revised: 11/10/2013] [Accepted: 12/16/2013] [Indexed: 12/26/2022]
Abstract
The tumor suppressor p53, nuclear factor-κB (NF-κB) and reactive oxygen species (ROS) have crucial roles in tumorigenesis, although the mechanisms of cross talk between these factors remain largely unknown. Here we report that miR-506 upregulation occurs in 83% of lung cancer patients (156 cases), and its expression highly correlates with ROS. Ectopic expression of miR-506 inhibits NF-κB p65 expression, induces ROS accumulation and then activates p53 to suppress lung cancer cell viability, but not in normal cells. Interestingly, p53 promotes miR-506 expression level, indicating that miR-506 mediates cross talk between p53, NF-κB p65 and ROS. Furthermore, we demonstrated that miR-506 mimics inhibited tumorigenesis in vivo, implicating that miR-506 might be a potential therapeutic molecule for selective killing of lung cancer cells.
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Affiliation(s)
- M Yin
- 1] The State Key Laboratory of Respiratory Diseases, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China [2] School of Life Science, University of Science and Technology of China, Hefei, China
| | - X Ren
- 1] The State Key Laboratory of Respiratory Diseases, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China [2] School of Life Science, University of Science and Technology of China, Hefei, China
| | - X Zhang
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Guangzhou Medical College, Guangzhou, China
| | - Y Luo
- Guangzhou RiboBio Co., Ltd, Guangzhou, China
| | - G Wang
- The State Key Laboratory of Respiratory Diseases, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - K Huang
- Guangzhou RiboBio Co., Ltd, Guangzhou, China
| | - S Feng
- Guangzhou RiboBio Co., Ltd, Guangzhou, China
| | - X Bao
- The State Key Laboratory of Respiratory Diseases, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - K Huang
- University of Chinese Academy of Sciences, Beijing, China
| | - X He
- School of Life Science, University of Science and Technology of China, Hefei, China
| | - P Liang
- 1] The State Key Laboratory of Respiratory Diseases, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China [2] University of Chinese Academy of Sciences, Beijing, China
| | - Z Wang
- The State Key Laboratory of Respiratory Diseases, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - H Tang
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Guangzhou Medical College, Guangzhou, China
| | - J He
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Guangzhou Medical College, Guangzhou, China
| | - B Zhang
- 1] The State Key Laboratory of Respiratory Diseases, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China [2] School of Life Science, University of Science and Technology of China, Hefei, China
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28
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Imbalance in redox status is associated with tumor aggressiveness and poor outcome in lung adenocarcinoma patients. J Cancer Res Clin Oncol 2014; 140:461-70. [PMID: 24449404 DOI: 10.1007/s00432-014-1586-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Accepted: 01/12/2014] [Indexed: 12/23/2022]
Abstract
PURPOSE The expression levels of human antioxidant genes (HAGs) and oxidative markers were investigated in light of lung adenocarcinoma aggressiveness and patient outcome. METHODS We assayed in vitro the tumoral invasiveness and multidrug resistance in human lung adenocarcinoma (AdC) cell lines (EKVX and A549). Data were associated with several redox parameters and differential expression levels of HAG network. The clinicopathological significance of these findings was investigated using microarray analysis of tumor tissue and by immunohistochemistry in archival collection of biopsies. RESULTS An overall increased activity (expression) of selected HAG components in the most aggressive cell line (EKVX cells) was observed by bootstrap and gene set enrichment analysis (GSEA). In vitro validation of oxidative markers revealed that EKVX cells had high levels of oxidative stress markers. In AdC cohorts, GSEA of microarray datasets showed significantly high levels of HAG components in lung AdC samples in comparison with normal tissue, in advanced stage compared with early stage and in patients with poor outcome. Cox multivariate regression analysis in a cohort of early pathologic (p)-stage of AdC cases showed that patients with moderate levels of 4-hydroxynonenal, a specific and stable end product of lipid peroxidation, had a significantly less survival rate (hazard ratio of 8.87) (P < 0.05). CONCLUSIONS High levels of oxidative markers are related to tumor aggressiveness and can predict poor outcome of early-stage lung adenocarcinoma patients.
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Jomova K, Valko M. Health protective effects of carotenoids and their interactions with other biological antioxidants. Eur J Med Chem 2013; 70:102-10. [PMID: 24141200 DOI: 10.1016/j.ejmech.2013.09.054] [Citation(s) in RCA: 125] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Revised: 09/26/2013] [Accepted: 09/29/2013] [Indexed: 10/26/2022]
Abstract
Carotenoids are natural pigments attracting attention of physicists, chemists and biologists due to their multiple functions in the nature. While carotenoids have unusually high extinction coefficients, they do not exhibit adequate emission. This fact has resulted in detailed studies of photophysical and photochemical properties of carotenoids and their role as light-harvesting pigments in photosynthesis. Carotenoids are abundantly present in fruits and vegetables and are considered as important species with beneficial effect on human health by decreasing the risk of various diseases, particularly decreasing the incidence of cancers and eye disease. More trials are needed to ascertain the role of carotenoids in prevention of cardiovascular disease and metabolic disease. Carotenoids effectively scavenge peroxyl radicals and act predominantly as antioxidants. However, under conditions of increased concentration of oxygen and carotenoid concentration, beta-carotene was found to exhibit prooxidant behaviour. Photophysical properties of carotenoids and conditions affecting a switch between antioxidant and prooxidant behaviour of carotenoids are the main aims of this review. In addition, the localization of carotenoids in biological membranes, their interactions and reactions with ascorbic acid (vitamin C) and alpha-tocopherol (vitamin E) as well as their redox potentials are discussed in view of their antioxidant properties as beneficial species in preventing various diseases.
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Affiliation(s)
- Klaudia Jomova
- Department of Chemistry, Faculty of Natural Sciences, Constantine The Philosopher University, SK-949 74 Nitra, Slovakia
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30
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Pirinççi N, Kaba M, Geçit İ, Güneş M, Yüksel MB, Tanık S, Arslan A, Demir H. Serum prolidase activity, oxidative stress, and antioxidant enzyme levels in patients with renal cell carcinoma. Toxicol Ind Health 2013; 32:193-9. [PMID: 24081636 DOI: 10.1177/0748233713498924] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
OBJECTIVES Prolidase is a member of the matrix metalloproteinase family. It plays a vital role in collagen turnover, matrix remodeling, and cell growth. Reactive oxygen species (ROS) have been implicated in the pathogenesis of various diseases, including cancers. Oxidative stress can cause tumor angiogenesis and may be carcinogenic. However, the relationship between antioxidant capacity and various cancers has been researched in several clinical trials. In our study, we aimed to identify serum prolidase activity, oxidative stress, and antioxidant enzyme levels in patients with renal tumors and to evaluate their relationships with each other. MATERIALS AND METHODS A total of 37 male patients with renal cell cancer and with a mean age of 56.28 ± 3.1 were included in the study. The control group comprising 36 male patients (mean age 56.31 ± 2.9) was randomly selected among the volunteers. Serum samples for measurement of superoxide dismutase (SOD), glutathione peroxidase (GSHPx), glutathione-S-transferase (GST), malondialdehyde (MDA), glutathione (GSH), and prolidase levels were kept at -20°C until they were used. RESULTS Serum prolidase activity and MDA levels were significantly higher in renal cancer patients than in controls (all, p < 0.05), while SOD, GSHPx, and GST levels were significantly lower (p < 0.05). CONCLUSION Our results indicate that increased prolidase seems to be related to increased oxidative stress along with decreased antioxidant levels in renal cancer.
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Affiliation(s)
- Necip Pirinççi
- Department of Urology, Yuzuncu Yıl University, Van, Turkey
| | - Mehmet Kaba
- Van Training and Research Hospital, Urology Clinic, Van, Turkey
| | - İlhan Geçit
- Department of Urology, Yuzuncu Yıl University, Van, Turkey
| | - Mustafa Güneş
- Department of Urology, Yuzuncu Yıl University, Van, Turkey
| | | | - Serhat Tanık
- Department of Urology, Bozok University, Yozgat, Turkey
| | - Ayşe Arslan
- Department of Chemistry, Yuzuncu Yıl University, Van, Turkey
| | - Halit Demir
- Department of Chemistry, Yuzuncu Yıl University, Van, Turkey
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31
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Glebova K, Veiko N, Kostyuk S, Izhevskaya V, Baranova A. Oxidized extracellular DNA as a stress signal that may modify response to anticancer therapy. Cancer Lett 2013; 356:22-33. [PMID: 24045040 DOI: 10.1016/j.canlet.2013.09.005] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Revised: 08/28/2013] [Accepted: 09/08/2013] [Indexed: 12/24/2022]
Abstract
An increase in the levels of oxidation is a universal feature of genomic DNA of irradiated or aged or even malignant cells. In case of apoptotic death of stressed cells, oxidized DNA can be released in circulation (cfDNA). According to the results of the studies performed in vitro by our group and other researchers, the oxidized cfDNA serves as a biomarker for a stress and a stress signal that is transmitted from the "stressed" area i.e. irradiated cells or cells with deficient anti-oxidant defenses to distant (bystander) cells. In recipient cells, oxidized DNA stimulates biosynthesis of ROS that is followed up by an increase in the number of single strand and double strand breaks (SSBs and DSBs), and activation of DNA Damage Response (DDR) pathway. Effects of oxidized DNA are considered similar to that of irradiation. It seems that downstream effects of irradiation, in part, depend on the release of oxidized DNA fragments that mediate the effects in distant cells. The responses of normal and tumor cell to oxidized DNA may differ. It seems that tumor cells are more sensitive to oxidized DNA-dependent DNA damage, while developing pronounced adaptive response. This may suggest that in chemotherapy or irradiation-treated human body, the release of oxidized DNA from dying cancer cells may give a boost to remaining malignant cells by augmenting their survival and stress resistance. Further studies of the effects of oxidized DNA in both in vitro and in vivo systems are warranted.
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Affiliation(s)
- Kristina Glebova
- Research Centre for Medical Genetics, Russian Academy of Medical Sciences, Moscow, Russia
| | - Natalya Veiko
- Research Centre for Medical Genetics, Russian Academy of Medical Sciences, Moscow, Russia
| | - Svetlana Kostyuk
- Research Centre for Medical Genetics, Russian Academy of Medical Sciences, Moscow, Russia
| | - Vera Izhevskaya
- Research Centre for Medical Genetics, Russian Academy of Medical Sciences, Moscow, Russia
| | - Ancha Baranova
- Research Centre for Medical Genetics, Russian Academy of Medical Sciences, Moscow, Russia; Center for the Study of Chronic Metabolic Diseases, School of System Biology, MSN3E1, George Mason University, Fairfax, VA 22030, USA.
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32
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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.
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Affiliation(s)
- Lucia Laura Policastro
- Department of Micro and Nanotechnology, National Atomic Energy Commission, Buenos Aires 1650, Argentina.
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33
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Bhatnagar S, Chaudhary N, Katare DP, Jain SK. A non-surgical method for induction of lung cancer in Wistar rats using a combination of NNK and high dietary fats. PROTOPLASMA 2013; 250:919-929. [PMID: 23315092 DOI: 10.1007/s00709-012-0478-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2012] [Accepted: 12/21/2012] [Indexed: 06/01/2023]
Abstract
Lung cancer is one of the most common malignant neoplasms all over the world. Smoking and a number of constituents of tobacco are responsible for development of lung tumours; however, the deleterious effects of tobacco-derived carcinogen, nitrosamine 4-(methylnitrosoamino)-1-(3-pyridyl)-1-butanone (nicotine-derived nitrosamine ketone (NNK)) remain unmatched. We report the development of a novel rodent model by administering multiple doses of NNK to male Wistar rats and feeding them with high-fat and low-protein diet. Tumour cells in lungs were observed in approximately 98 % rats after 8 months of NNK treatment, as evident by histopathological analysis. This rodent model showed slow progression of lung tumours which has helped us to assess early indicators of oxidative damage in lungs by studying the levels of lipid peroxidation and antioxidant parameters. LPO was elevated by 46.94 %, SOD, CAT, GSH and GR activity was decreased by 48.67 %, 22.04 %, 21.46 % and 20.85 %, respectively in serum of NNK treated rats when compared with control. These findings suggest that increased oxidative stress can represent a risk factor for the development of chronic disease in early future. This new animal model is an attempt to greatly facilitate studies of the pathophysiology, biochemistry and therapy of lung cancer.
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Affiliation(s)
- Shilpa Bhatnagar
- Department of Biotechnology, Hamdard University, Hamdard Nagar, New Delhi 110062, India
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34
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Mishra N, Hall J. Identification of patients at risk for hereditary colorectal cancer. Clin Colon Rectal Surg 2013; 25:67-82. [PMID: 23730221 DOI: 10.1055/s-0032-1313777] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Diagnosis of hereditary colorectal cancer syndromes requires clinical suspicion and knowledge of such syndromes. Lynch syndrome is the most common cause of hereditary colorectal cancer. Other less common causes include familial adenomatous polyposis (FAP), Peutz-Jeghers syndrome (PJS), juvenile polyposis syndrome, and others. There have been a growing number of clinical and molecular tools used to screen and test at risk individuals. Screening tools include diagnostic clinical criteria, family history, genetic prediction models, and tumor testing. Patients who are high risk based on screening should be referred for genetic testing.
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Affiliation(s)
- Nitin Mishra
- Department of Colon and Rectal Surgery, Lahey Clinic, Burlington, Massachusetts
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35
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Przybylowska K, Kabzinski J, Sygut A, Dziki L, Dziki A, Majsterek I. An association selected polymorphisms of XRCC1, OGG1 and MUTYH gene and the level of efficiency oxidative DNA damage repair with a risk of colorectal cancer. Mutat Res 2013; 745-746:6-15. [PMID: 23618615 DOI: 10.1016/j.mrfmmm.2013.04.002] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2012] [Revised: 03/25/2013] [Accepted: 04/09/2013] [Indexed: 06/02/2023]
Abstract
Oxidative damage has been implicated in the pathogenesis of colorectal cancer (CRC). The base excision repair (BER) pathway is the major DNA repair pathway for oxidative DNA damage and genetic variation associated with impaired BER might thus increase a risk of CRC. In this work, we evaluated associations between the repair efficiency of oxidative DNA lesions and single-nucleotide polymorphisms of BER genes: the 194Trp/Arg and the 399Arg/Gln XRCC1, the 326Ser/Cys OGG1 and the 324Gln/His MUTYH and CRC occurrence in a Polish population. These polymorphisms were genotyped in 182 CRC patients and 245 control subjects, using a PCR-RFLP approach. The level of oxidative damage and DNA repair capacity in lymphocytes and CRC tissue samples was evaluated by comet assay using FPG and Nth glycosidases. The 326Ser/Cys OGG1 and the 324Gln/His as well as the 324His/His MUTYH genotypes were found to be associated with an increased CRC risk, while no association was found for the XRCC1 gene polymorphisms. It was also demonstrated the reduced capacity of oxidative damage repair in CRC patients in comparison to healthy controls. Moreover, the decrease efficiency of DNA repair were correlated with the 399Gln/Gln XRCC1 and the 324His/His MUTYH genotypes occurrence in CRC patients. The results obtained in our study indicated an association of OGG1 and MUTYH genes polymorphisms involved in oxidative DNA lesions repair with the risk occurrence of colorectal cancer in Polish patients. It was also found that studied polymorphisms might affect DNA repair capacity suggesting their role in CRC pathogenesis. Finally, we conclude that BER pathway may be an important target for the diagnosis and treatment of colorectal patients.
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Affiliation(s)
- Karolina Przybylowska
- Department of Clinical Chemistry and Biochemistry, Medical University of Lodz, Poland
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Ermakov AV, Konkova MS, Kostyuk SV, Izevskaya VL, Baranova A, Veiko NN. Oxidized extracellular DNA as a stress signal in human cells. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2013; 2013:649747. [PMID: 23533696 PMCID: PMC3606786 DOI: 10.1155/2013/649747] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2012] [Accepted: 01/27/2013] [Indexed: 12/20/2022]
Abstract
The term "cell-free DNA" (cfDNA) was recently coined for DNA fragments from plasma/serum, while DNA present in in vitro cell culture media is known as extracellular DNA (ecDNA). Under oxidative stress conditions, the levels of oxidative modification of cellular DNA and the rate of cell death increase. Dying cells release their damaged DNA, thus, contributing oxidized DNA fragments to the pool of cfDNA/ecDNA. Oxidized cell-free DNA could serve as a stress signal that promotes irradiation-induced bystander effect. Evidence points to TLR9 as a possible candidate for oxidized DNA sensor. An exposure to oxidized ecDNA stimulates a synthesis of reactive oxygen species (ROS) that evokes an adaptive response that includes transposition of the homologous loci within the nucleus, polymerization and the formation of the stress fibers of the actin, as well as activation of the ribosomal gene expression, and nuclear translocation of NF-E2 related factor-2 (NRF2) that, in turn, mediates induction of phase II detoxifying and antioxidant enzymes. In conclusion, the oxidized DNA is a stress signal released in response to oxidative stress in the cultured cells and, possibly, in the human body; in particular, it might contribute to systemic abscopal effects of localized irradiation treatments.
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Affiliation(s)
- Aleksei V. Ermakov
- Research Centre for Medical Genetics, Russian Academy of Medical Sciences, Mosskvorechie street 1, Moscow 115478, Russia
| | - Marina S. Konkova
- Research Centre for Medical Genetics, Russian Academy of Medical Sciences, Mosskvorechie street 1, Moscow 115478, Russia
| | - Svetlana V. Kostyuk
- Research Centre for Medical Genetics, Russian Academy of Medical Sciences, Mosskvorechie street 1, Moscow 115478, Russia
| | - Vera L. Izevskaya
- Research Centre for Medical Genetics, Russian Academy of Medical Sciences, Mosskvorechie street 1, Moscow 115478, Russia
| | - Ancha Baranova
- Research Centre for Medical Genetics, Russian Academy of Medical Sciences, Mosskvorechie street 1, Moscow 115478, Russia
- Center for the Study of Chronic Metabolic Diseases, School of System Biology, George Mason University, Fairfax, VA 22030, USA
| | - Natalya N. Veiko
- Research Centre for Medical Genetics, Russian Academy of Medical Sciences, Mosskvorechie street 1, Moscow 115478, Russia
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Wang XF, Wu YH, Jiao J, Guan CP, Yang XG, Wang MS. Diagnostic Value of Superoxide Dismutase in Tuberculous and Malignant Pleural Effusions. Asian Pac J Cancer Prev 2013; 14:821-4. [DOI: 10.7314/apjcp.2013.14.2.821] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Krzyściak W, Kowalska J, Kózka M, Papież MA, Kwiatek WM. Iron content (PIXE) in competent and incompetent veins is related to the vein wall morphology and tissue antioxidant enzymes. Bioelectrochemistry 2012; 87:114-23. [DOI: 10.1016/j.bioelechem.2011.12.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2011] [Revised: 12/18/2011] [Accepted: 12/30/2011] [Indexed: 12/26/2022]
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Sassa A, Beard WA, Prasad R, Wilson SH. DNA sequence context effects on the glycosylase activity of human 8-oxoguanine DNA glycosylase. J Biol Chem 2012; 287:36702-10. [PMID: 22989888 DOI: 10.1074/jbc.m112.397786] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Human 8-oxoguanine DNA glycosylase (OGG1) is a key enzyme involved in removing 7,8-dihydro-8-oxoguanine (8-oxoG), a highly mutagenic DNA lesion generated by oxidative stress. The removal of 8-oxoG by OGG1 is affected by the local DNA sequence, and this feature most likely contributes to observed mutational hot spots in genomic DNA. To elucidate the influence of local DNA sequence on 8-oxoG excision activity of OGG1, we conducted steady-state, pre-steady-state, and single turnover kinetic evaluation of OGG1 in alternate DNA sequence contexts. The sequence context effect was studied for a mutational hot spot at a CpG dinucleotide. Altering either the global DNA sequence or the 5'-flanking unmodified base pair failed to influence the excision of 8-oxoG. Methylation of the cytosine 5' to 8-oxoG also did not affect 8-oxoG excision. In contrast, a 5'-neighboring mismatch strongly decreased the rate of 8-oxoG base removal. Substituting the 5'-C in the CpG dinucleotide with T, A, or tetrahydrofuran (i.e. T:G, A:G, and tetrahydrofuran:G mispairs) resulted in a 10-, 13-, and 4-fold decrease in the rate constant for 8-oxoG excision, respectively. A greater loss in activity was observed when T:C or A:C was positioned 5' of 8-oxoG (59- and 108-fold, respectively). These results indicate that neighboring structural abnormalities 5' to 8-oxoG deter its repair thereby enhancing its mutagenic potential.
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Affiliation(s)
- Akira Sassa
- Laboratory of Structural Biology, NIEHS, National Institutes of Health, Research Triangle Park, North Carolina 27709, USA
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Jeong D, Na K. Chondroitin sulfate based nanocomplex for enhancing the stability and activity of anthocyanin. Carbohydr Polym 2012; 90:507-15. [DOI: 10.1016/j.carbpol.2012.05.072] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Revised: 05/10/2012] [Accepted: 05/20/2012] [Indexed: 11/17/2022]
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de Oliveira LRC, Peresi E, Tavares FC, Corrêa CR, Pierine DT, Calvi SA. DNA damage in peripheral blood mononuclear cells of patients undergoing anti-tuberculosis treatment. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2012; 747:82-85. [DOI: 10.1016/j.mrgentox.2012.04.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2012] [Revised: 03/29/2012] [Accepted: 04/06/2012] [Indexed: 10/28/2022]
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Pasanen AK, Kuitunen H, Haapasaari KM, Karihtala P, Kyllönen H, Soini Y, Turpeenniemi-Hujanen T, Kuittinen O. Expression and prognostic evaluation of oxidative stress markers in an immunohistochemical study of B-cell derived lymphomas. Leuk Lymphoma 2012; 53:624-31. [DOI: 10.3109/10428194.2011.624226] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Tudek B, Speina E. Oxidatively damaged DNA and its repair in colon carcinogenesis. Mutat Res 2012; 736:82-92. [PMID: 22561673 DOI: 10.1016/j.mrfmmm.2012.04.003] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2012] [Revised: 04/02/2012] [Accepted: 04/16/2012] [Indexed: 12/18/2022]
Abstract
Inflammation, high fat, high red meat and low fiber consumption have for long been known as the most important etiological factors of sporadic colorectal cancers (CRC). Colon cancer originates from neoplastic transformation in a single layer of epithelial cells occupying colonic crypts, in which migration and apoptosis program becomes disrupted. This results in the formation of polyps and metastatic cancers. Mutational program in sporadic cancers involves APC gene, in which mutations occur most abundantly in the early phase of the process. This is followed by mutations in RAS, TP53, and other genes. Progression of carcinogenic process in the colon is accompanied by augmentation of the oxidative stress, which manifests in the increased level of oxidatively damaged DNA both in the colon epithelium, and in blood leukocytes and urine, already at the earliest stages of disease development. Defence mechanisms are deregulated in CRC patients: (i) antioxidative vitamins level in blood plasma declines with the development of disease; (ii) mRNA level of base excision repair enzymes in blood leukocytes of CRC patients is significantly increased; however, excision rate is regulated separately, being increased for 8-oxoGua, while decreased for lipid peroxidation derived ethenoadducts, ɛAde and ɛCyt; (iii) excision rate of ɛAde and ɛCyt in colon tumors is significantly increased in comparison to asymptomatic colon margin, and ethenoadducts level is decreased. This review highlights mechanisms underlying such deregulation, which is the driving force to colon carcinogenesis.
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Affiliation(s)
- Barbara Tudek
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
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Najeeb Q, Bhaskar N, Masood I, Wadhwa S, Kaur H, Ishaq S. Malondialdehyde (MDA) Superoxide dismutase (SOD) levels - distinguishing parameters betweenbenign malignant pleural effusions. ACTA ACUST UNITED AC 2012. [DOI: 10.5530/ax.2012.2.2.2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Dizdaroglu M. Oxidatively induced DNA damage: mechanisms, repair and disease. Cancer Lett 2012; 327:26-47. [PMID: 22293091 DOI: 10.1016/j.canlet.2012.01.016] [Citation(s) in RCA: 178] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2011] [Revised: 12/23/2011] [Accepted: 01/11/2012] [Indexed: 12/12/2022]
Abstract
Endogenous and exogenous sources cause oxidatively induced DNA damage in living organisms by a variety of mechanisms. The resulting DNA lesions are mutagenic and, unless repaired, lead to a variety of mutations and consequently to genetic instability, which is a hallmark of cancer. Oxidatively induced DNA damage is repaired in living cells by different pathways that involve a large number of proteins. Unrepaired and accumulated DNA lesions may lead to disease processes including carcinogenesis. Mutations also occur in DNA repair genes, destabilizing the DNA repair system. A majority of cancer cell lines have somatic mutations in their DNA repair genes. In addition, polymorphisms in these genes constitute a risk factor for cancer. In general, defects in DNA repair are associated with cancer. Numerous DNA repair enzymes exist that possess different, but sometimes overlapping substrate specificities for removal of oxidatively induced DNA lesions. In addition to the role of DNA repair in carcinogenesis, recent evidence suggests that some types of tumors possess increased DNA repair capacity that may lead to therapy resistance. DNA repair pathways are drug targets to develop DNA repair inhibitors to increase the efficacy of cancer therapy. Oxidatively induced DNA lesions and DNA repair proteins may serve as potential biomarkers for early detection, cancer risk assessment, prognosis and for monitoring therapy. Taken together, a large body of accumulated evidence suggests that oxidatively induced DNA damage and its repair are important factors in the development of human cancers. Thus this field deserves more research to contribute to the development of cancer biomarkers, DNA repair inhibitors and treatment approaches to better understand and fight cancer.
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Affiliation(s)
- Miral Dizdaroglu
- Biochemical Science Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA.
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Prevention of oxidative stress in Chang liver cells by gallic acid-grafted-chitosans. Carbohydr Polym 2012; 87:876-880. [DOI: 10.1016/j.carbpol.2011.08.080] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2011] [Revised: 08/23/2011] [Accepted: 08/24/2011] [Indexed: 11/21/2022]
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Reduced expression of DNA repair genes (XRCC1, XPD, and OGG1) in squamous cell carcinoma of head and neck in North India. Tumour Biol 2011; 33:111-9. [PMID: 22081374 DOI: 10.1007/s13277-011-0253-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2011] [Accepted: 10/18/2011] [Indexed: 12/13/2022] Open
Abstract
Squamous cell carcinoma of head and neck (SCCHN) is the sixth most common cancer globally, and in India, it accounts for 30% of all cancer cases. Epidemiological studies have shown a positive association between defective DNA repair capacity and SCCHN. The underlying mechanism of their involvement is not well understood. In the present study, we have analyzed the relationship between SCCHN and the expression of DNA repair genes namely X-ray repair cross-complementing group 1 (XRCC1), xeroderma pigmentosum group D (XPD), and 8-oxoguanine DNA glycosylase (OGG1) in 75 SCCHN cases and equal number of matched healthy controls. Additionally, levels of DNA adduct [8-hydroxyguanine (8-OHdG)] in 45 SCCHN cases and 45 healthy controls were also determined, to ascertain a link between mRNA expression of these three genes and DNA adducts. The relative expression of XRCC1, XPD, and OGG1 in head and neck cancer patients was found to be significantly low as compared to controls. The percent difference of mean relative expression between cases and controls demonstrated maximum lowering in OGG1 (47.3%) > XPD (30.7%) > XRCC1 (25.2%). A negative Spearmen correlation between XRCC1 vs. 8-OHdG in cases was observed. In multivariate logistic regression analysis (adjusting for age, gender, smoking status, and alcohol use), low expression of XRCC1, XPD, and OGG1 was associated with a statistically significant increased risk of SCCHN [crude odds ratios (ORs) (95%CI) OR 2.10; (1.06-4.17), OR 2.76; (1.39-5.49), and 5.24 (2.38-11.52), respectively]. In conclusion, our study demonstrated that reduced expression of XRCC1, XPD, and OGG1 is associated with more than twofold increased risk in SCCHN.
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Abstract
Thiopurines were examined for their ability to produce singlet oxygen ((1)O(2)) with UVA light. The target compounds were three thiopurine prodrugs, azathioprine (Aza), 6-mercaptopurine (6-MP) and 6-thioguanine (6-TG), and their S-methylated derivatives of 6-methylmercaptopurine (me6-MP) and 6-methylthioguanine (me6-TG). Our results showed that these thiopurines were efficient (1)O(2) sensitizers under UVA irradiation but rapidly lost their photoactivities for (1)O(2) production over time by a self-sensitized photooxidation of sulfur atoms in the presence of oxygen and UVA light. The initial quantum yields of (1)O(2) production were determined to be in the range of 0.30-0.6 in aqueous solutions. Substitution of a hydrogen atom with a nitroimidazole or methyl group at S decreased the efficacy of photosensitized (1)O(2) production as found for Aza, me6-MP and me6-TG. (1)O(2)-induced formation of 8-oxo-7,8-dihydro-2'-dexyguanosine (8-oxodGuo) was assessed by incubation of 6-methylthiopurine/UVA-treated calf thymus DNA with human repair enzyme 8-oxodGuo DNA glycosylase (hOGG1), followed by apurinic (AP) site determination. Because more 8-oxodGuo was formed in Tris D(2)O than in Tris H(2)O, (1)O(2) is implicated as a key species in the reaction. These findings provided quantitative information on the photosensitization efficacy of thiopurines and to some extent revealed the correlations between photoactivity and phototoxicity.
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Kontakiotis T, Katsoulis K, Hagizisi O, Kougioulis M, Gerou S, Papakosta D. Bronchoalveolar lavage fluid alteration in antioxidant and inflammatory status in lung cancer patients. Eur J Intern Med 2011; 22:522-6. [PMID: 21925065 DOI: 10.1016/j.ejim.2011.02.024] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2010] [Revised: 02/20/2011] [Accepted: 02/25/2011] [Indexed: 11/25/2022]
Abstract
BACKGROUND Increased oxidative and inflammatory markers have been reported in lung cancer patients, but relatively few studies have investigated the presence of antioxidants both in the local lung environment and in the systemic circulation. Furthermore, it is hypothesized that the immune system activation in vivo is regulated by the redox environment. OBJECTIVES To investigate local and systemically circulating antioxidant and inflammatory mediators in lung cancer patients and potential correlations between them. METHODS Forty two male patients (mean age 65±8years) with primary lung cancer were studied. Sixteen age and smoking history matched male subjects without any evidence of malignancy served as controls. Total antioxidant status (TAS) and glutathione (GSH), as well as interleukin-1a (IL-1a), interleukin-6 (IL-6) and tumor necrosis factor alpha (TNF-α) were measured in bronchoalveolar lavage fluid (BALF) and serum samples. RESULTS A statistically significant increase of TAS and GSH in BALF was observed in lung cancer patients compared to healthy subjects (0.27±0.24 vs. 0.12±0.02mmol/L, p=0.02 and 7.56±4.29 vs. 4.62±2.23μmol/L, p=0.01 respectively). Statistically significant correlations in cancer patients were observed in BALF between TAS and a. IL-1α (r=0.87, p<0.001), b. IL-6 (r=0.52, p=0.001) and c. TNF-α (r=0.67, p<0.001). CONCLUSIONS Alteration in antioxidant and inflammatory mediator status was found in lung cancer patients both in serum and in BALF compared to healthy subjects matched for smoking history. Moreover, a positive correlation was observed between antioxidants and pro-inflammatory cytokines, but only locally and not systematically.
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Affiliation(s)
- T Kontakiotis
- Pulmonary and Microbiology Department, Aristotle University, Thessaloniki, Greece.
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Disturbances in the glutathione/ophthalmate redox buffer system in the woodchuck model of hepatitis virus-induced hepatocellular carcinoma. HPB SURGERY : A WORLD JOURNAL OF HEPATIC, PANCREATIC AND BILIARY SURGERY 2011; 2011:789323. [PMID: 21941408 PMCID: PMC3175733 DOI: 10.1155/2011/789323] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2011] [Revised: 07/18/2011] [Accepted: 07/19/2011] [Indexed: 12/22/2022]
Abstract
Purpose. The incidence of liver tumors is rising in USA. The purpose of this study was to evaluate liver oxido-reductive status in the presence of chronic liver disease and hepatocellular carcinoma (HCC). Methods. Glutathione species and ophthalmate (OA) concentrations were measured by LC-MS in processed plasma and red blood cells (RBC) from infected Woodchuck with hepatitis virus (WHV). Blood samples were obtained from: (i) infected animals with tumors (WHV+/HCC+), (ii) infected animals without tumors (WHV+/HCC−) and (iii) healthy animals (WHC−/HCC−). Results. The concentration of reduced glutathione (GSH) and the ratio GSH/GSG were lower in plasma from WHV+/HCC+ animals when compared to WHV+/HCC− and WHV−/HCC− (P < 0.01). In contrast, the concentration of oxidized glutathione (GSSG) was found to be higher in plasma from WHV+/HCC+ animals when compared to WHV+/HCC− and WHV−/HCC− (P < 0.01). The Glutathione species and its ratio from the RBC compartment were similar among all groups. OA concentration in both plasma and RBC was significantly higher from WHV+/HCC+ when compared to WHV+/HCC− and WHV−/HCC− (P < 0.01). Conclusions. Disturbances of the glutathione redox buffer system and higher concentrations of OA were found in the WCV+/HCC+ animal model. The role of these compounds as biomarkers of early tumor development in patients with end stage liver disease remains to be determined.
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