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Wang G, Li Y, Pan R, Yin X, Jia C, She Y, Huang L, Yang G, Chi H, Tian G. XRCC1: a potential prognostic and immunological biomarker in LGG based on systematic pan-cancer analysis. Aging (Albany NY) 2024; 16:872-910. [PMID: 38217545 PMCID: PMC10817400 DOI: 10.18632/aging.205426] [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: 06/26/2023] [Accepted: 12/01/2023] [Indexed: 01/15/2024]
Abstract
X-ray repair cross-complementation group 1 (XRCC1) is a pivotal contributor to base excision repair, and its dysregulation has been implicated in the oncogenicity of various human malignancies. However, a comprehensive pan-cancer analysis investigating the prognostic value, immunological functions, and epigenetic associations of XRCC1 remains lacking. To address this knowledge gap, we conducted a systematic investigation employing bioinformatics techniques across 33 cancer types. Our analysis encompassed XRCC1 expression levels, prognostic and diagnostic implications, epigenetic profiles, immune and molecular subtypes, Tumor Mutation Burden (TMB), Microsatellite Instability (MSI), immune checkpoints, and immune infiltration, leveraging data from TCGA, GTEx, CELL, Human Protein Atlas, Ualcan, and cBioPortal databases. Notably, XRCC1 displayed both positive and negative correlations with prognosis across different tumors. Epigenetic analysis revealed associations between XRCC1 expression and DNA methylation patterns in 10 cancer types, as well as enhanced phosphorylation. Furthermore, XRCC1 expression demonstrated associations with TMB and MSI in the majority of tumors. Interestingly, XRCC1 gene expression exhibited a negative correlation with immune cell infiltration levels, except for a positive correlation with M1 and M2 macrophages and monocytes in most cancers. Additionally, we observed significant correlations between XRCC1 and immune checkpoint gene expression levels. Lastly, our findings implicated XRCC1 in DNA replication and repair processes, shedding light on the precise mechanisms underlying its oncogenic effects. Overall, our study highlights the potential of XRCC1 as a prognostic and immunological pan-cancer biomarker, thereby offering a novel target for tumor immunotherapy.
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Affiliation(s)
- Guobing Wang
- Department of Laboratory Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, China
- Medical Clinical Laboratory, Yibin Hospital of T.C.M, Yibin, China
| | - Yunyue Li
- Queen Mary College, Medical School of Nanchang University, Nanchang, China
| | - Rui Pan
- Clinical Medical College, Southwest Medical University, Luzhou, China
| | - Xisheng Yin
- Clinical Medical College, Southwest Medical University, Luzhou, China
| | - Congchao Jia
- Clinical Medical College, Southwest Medical University, Luzhou, China
| | - Yuchen She
- Clinical Medical College, Southwest Medical University, Luzhou, China
| | - Luling Huang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Guanhu Yang
- Department of Specialty Medicine, Ohio University, Athens, OH 45701, USA
| | - Hao Chi
- Clinical Medical College, Southwest Medical University, Luzhou, China
| | - Gang Tian
- Department of Laboratory Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, China
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García P, Lamarca A, Díaz J, Carrera E, Roa JC. Current and New Biomarkers for Early Detection, Prognostic Stratification, and Management of Gallbladder Cancer Patients. Cancers (Basel) 2020; 12:E3670. [PMID: 33297469 PMCID: PMC7762341 DOI: 10.3390/cancers12123670] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 11/06/2020] [Accepted: 11/11/2020] [Indexed: 01/17/2023] Open
Abstract
Gallbladder cancer (GBC) is an aggressive disease that shows evident geographic variation and is characterized by a poor prognosis, mainly due to the late diagnosis and ineffective treatment. Genetic variants associated with GBC susceptibility, including polymorphisms within the toll-like receptors TLR2 and TLR4, the cytochrome P450 1A1 (CYP1A1), and the ATP-binding cassette (ABC) transporter ABCG8 genes, represent promising biomarkers for the stratification of patients at higher risk of GBC; thus, showing potential to prioritize cholecystectomy, particularly considering that early diagnosis is difficult due to the absence of specific signs and symptoms. Similarly, our better understanding of the gallbladder carcinogenic processes has led to identify several cellular and molecular events that may influence patient management, including HER2 aberrations, high tumor mutational burden, microsatellite instability, among others. Despite these reports on interesting and promising markers for risk assessment, diagnosis, and prognosis; there is an unmet need for reliable and validated biomarkers that can improve the management of GBC patients and support clinical decision-making. This review article examines the most potentially significant biomarkers of susceptibility, diagnosis, prognosis, and therapy selection for GBC patients, highlighting the need to find and validate existing and new molecular biomarkers to improve patient outcomes.
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Affiliation(s)
- Patricia García
- Department of Pathology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile;
| | - Angela Lamarca
- Department of Medical Oncology, The Christie NHS Foundation Trust, Division of Cancer Sciences, University of Manchester, Manchester M20 4BX, UK;
| | - Javier Díaz
- Departamento del Aparato Digestivo, Hospital Nacional Edgardo Rebagliati Martins-Essalud, School of Medicine, Universidad Nacional Mayor de San Marcos, Lima 15081, Peru;
| | - Enrique Carrera
- Department of Gastroenterology, Hospital Especialidades Eugenio Espejo, Universidad San Francisco de Quito, Quito 170136, Ecuador;
| | - Juan Carlos Roa
- Department of Pathology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago 8330024, Chile;
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Felix FA, da Silva LP, Lopes MLDDS, Sobral APV, Freitas RDA, de Souza LB, Barboza CAG. DNA base excision repair and nucleotide excision repair proteins in malignant salivary gland tumors. Arch Oral Biol 2020; 121:104987. [PMID: 33202356 DOI: 10.1016/j.archoralbio.2020.104987] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 10/29/2020] [Accepted: 11/01/2020] [Indexed: 12/12/2022]
Abstract
OBJECTIVE To analyze the immunohistochemical expression of the base excision repair (BER) proteins apurinic/apyrimidinic endonuclease 1 (APE1) and X-ray repair cross-complementing protein 1 (XRCC1) and nucleotide excision repair (NER) protein xeroderma pigmentosum group F (XPF) in malignant salivary gland tumors (MSGTs). DESIGN Sixty-two cases of MSGTs were selected, including 14 acinic cell carcinomas (AcCC), 15 polymorphous adenocarcinomas (PAC), 16 adenoid cystic carcinomas (ACC), and 17 mucoepidermoid carcinomas (MEC). The specimens were submitted to quantitative immunohistochemical analysis. RESULTS All MSGTs exhibited nuclear or nucleo-cytoplasmic immunostaining of APE1, XRCC1 and XPF, with a high percentage of positive cells (median = 78.31, 70.48 and 75.46, respectively). XRCC1 expression was higher in PAC compared to MEC (p = 0.032). Nuclear APE1 immunostaining was significantly higher than nucleo-cytoplasmic expression in the selected MSGTs (p < 0.0001). APE1 expression was significantly associated with T1-T2 tumors in ACC (p = 0.006). Increased expression of XPF was associated with age older than 60 years in MEC (p = 0.015) and with ACC involving the minor salivary gland (p = 0.012), while a lower expression was found in AcCC and ACC patients treated by surgery combined with adjuvant therapy (p = 0.036 and p = 0.020, respectively). Low expression of XRCC1 in the nucleus (p = 0.028) and concomitant expression of this protein in the nucleus/cytoplasm were associated with a lower overall 5-year survival rate (p = 0.017). CONCLUSIONS This study showed that BER and NER proteins evaluated are highly expressed in the MSGTs studied, indicating mechanisms of genotoxic control in these tumors. In addition, the dysregulation of XRCC1 expression was a prognostic predictor in MSGTs analyzed.
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Affiliation(s)
- Fernanda Aragão Felix
- Postgraduate Program in Dental Science, Department of Dentistry, Federal University of Rio Grande do Norte, Natal, RN, Brazil
| | | | | | | | - Roseana de Almeida Freitas
- Postgraduate Program in Dental Science, Department of Dentistry, Federal University of Rio Grande do Norte, Natal, RN, Brazil
| | - Lélia Batista de Souza
- Postgraduate Program in Dental Science, Department of Dentistry, Federal University of Rio Grande do Norte, Natal, RN, Brazil
| | - Carlos Augusto Galvão Barboza
- Postgraduate Program in Dental Science, Department of Dentistry, Federal University of Rio Grande do Norte, Natal, RN, Brazil.
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4
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Wu Z, Miao X, Zhang Y, Li D, Zou Q, Yuan Y, Liu R, Yang Z. XRCC1 Is a Promising Predictive Biomarker and Facilitates Chemo-Resistance in Gallbladder Cancer. Front Mol Biosci 2020; 7:70. [PMID: 32426369 PMCID: PMC7212355 DOI: 10.3389/fmolb.2020.00070] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 03/30/2020] [Indexed: 12/25/2022] Open
Abstract
Gallbladder cancer is a relatively uncommon human malignant tumor with an extremely poor prognosis. Currently, no biomarkers can accurately diagnose gallbladder cancer and predict patients' prognosis. XRCC1 is involved in tumorigenesis, progression, and chemo-resistance of several human cancers, but the role of XRCC1 in gallbladder cancer is never reported. In this study, we investigated the expression of XRCC1 and its clinicopathological and prognostic significance in gallbladder cancer, and explored the biological role of XRCC1 in gallbladder cancer cells. We found that XRCC1 was significantly up-regulated in gallbladder cancer in protein and mRNA levels. Positive XRCC1 expression was correlated with aggressive clinicopathological features and was an independent poor prognostic factor in gallbladder cancer. The ROC curves suggested that XRCC1 expression had potential clinicopathological diagnostic value in gallbladder cancer. In vitro, XRCC1 was overexpression in CD133+GBC-SD cells compared to GBC-SD cells. In functional experiment, XRCC1 knockdown had a non-significant impact on proliferation, migration, invasion, and apoptosis of CD133+GBC-SD cells. But, XRCC1 knockdown could significantly improve the sensitivity of CD133+GBC-SD cells to 5-Fluorouracil via promoting cell necrosis and apoptosis. Thus, this study indicates that XRCC1 may be a promising predictive biomarker of gallbladder cancer and a potential therapeutic target for gallbladder cancer.
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Affiliation(s)
- Zhengchun Wu
- Hunan Provincial Key Laboratory of Hepatobiliary Disease Research, Department of General Surgery, Second Xiangya Hospital, Central South University, Changsha, China
| | - Xiongying Miao
- Hunan Provincial Key Laboratory of Hepatobiliary Disease Research, Department of General Surgery, Second Xiangya Hospital, Central South University, Changsha, China
| | - Yuanfang Zhang
- Immunodiagnostic Reagents Engineering Research Center of Hunan Province, School of medicine, Hunan Normal University, Changsha, China
| | - Daiqiang Li
- Department of Pathology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Qiong Zou
- Department of Pathology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Yuan Yuan
- Department of Pathology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Rushi Liu
- Immunodiagnostic Reagents Engineering Research Center of Hunan Province, School of medicine, Hunan Normal University, Changsha, China
| | - Zhulin Yang
- Hunan Provincial Key Laboratory of Hepatobiliary Disease Research, Department of General Surgery, Second Xiangya Hospital, Central South University, Changsha, China
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5
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Prognostic immunohistochemical biomarkers of chemotherapy efficacy in biliary tract cancer: A systematic review and meta-analysis. Crit Rev Oncol Hematol 2019; 141:82-94. [DOI: 10.1016/j.critrevonc.2019.06.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 11/13/2018] [Accepted: 06/03/2019] [Indexed: 02/06/2023] Open
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Singh N, Kazim SN, Sultana R, Tiwari D, Borkotoky R, Kakati S, Nath Das N, Kumar Saikia A, Bose S. Oxidative stress and deregulations in base excision repair pathway as contributors to gallbladder anomalies and carcinoma - a study involving North-East Indian population. Free Radic Res 2019; 53:473-485. [PMID: 31117842 DOI: 10.1080/10715762.2019.1606423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Gallbladder cancer (GBC) is a fatal condition with dismal prognosis and aggressive local invasiveness; and with uncharacterised molecular pathology relating to non-specific therapeutic modalities. Given the importance of oxidative stress in chronic diseases and carcinogenesis, and the lacunae in literature regarding its role in gallbladder diseases, this study aimed to study the involvement of oxidative stress and deregulation in the base excision repair (BER) pathway in the pathogenesis of gallbladder diseases including GBC. This study involved patients from the North-East Indian population, where the numbers of reported cases are increasing rapidly and alarmingly. Oxidative stress, based on 8-OH-dG levels, was found to be significantly higher in gallbladder anomalies (cholelithiasis [CL] and cholecystitis [CS]) and GBC at the plasma and DNA level, and was associated with GBC severity. The expressions of key BER pathway genes were downregulated in gallbladder anomalies and GBC compared to controls, and in GBC compared to both non-neoplastic controls and gallbladder anomalies. Expression of XRCC1 and hOGG1 was significantly associated with both susceptibility and severity of GBC. The XRCC1 codon280 polymorphism was associated with disease susceptibility; and significantly higher oxidative stress was observed in hOGG1 genotypic variants. The genomes of GBC patients were found to be more hypermethylated compared to controls, with the promoters of XRCC1 and hOGG1 being hypermethylated and, therefore, being silenced. This study underlined the prognostic significance of the oxidative stress marker 8-OH-dG and BER pathway genes, especially hOGG1 and XRCC1, in gallbladder anomalies and GBC, as well as stated their potential for therapeutic targeting.
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Affiliation(s)
- Nidhi Singh
- a Department of Biotechnology , Gauhati University , Guwahati , India
| | - Syed Naqui Kazim
- b Centre for Interdisciplinary Research in Basic Sciences , Jamia Millia Islamia , New Delhi , India
| | - Rizwana Sultana
- c Bioengineering and Technology , Gauhati University , Guwahati , India
| | - Diptika Tiwari
- c Bioengineering and Technology , Gauhati University , Guwahati , India
| | - Raktim Borkotoky
- a Department of Biotechnology , Gauhati University , Guwahati , India
| | | | | | - Anjan Kumar Saikia
- e Central Railway Hospital , Guwahati , India.,f GNRC Hospital , Guwahati , India
| | - Sujoy Bose
- a Department of Biotechnology , Gauhati University , Guwahati , India
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Lamarca A, Barriuso J, McNamara MG, Valle JW. Biliary Tract Cancer: State of the Art and potential role of DNA Damage Repair. Cancer Treat Rev 2018; 70:168-177. [PMID: 30218788 DOI: 10.1016/j.ctrv.2018.09.002] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2018] [Revised: 09/05/2018] [Accepted: 09/06/2018] [Indexed: 02/07/2023]
Abstract
Biliary tract cancers (BTCs), including cholangiocarcinoma, gallbladder cancer and ampullary cancers, are poor-prognosis malignancies. Most patients are diagnosed with advanced disease, when treatment is limited to palliative chemotherapy. First line chemotherapy is usually administered in the form of cisplatin and gemcitabine. Benefit from second line chemotherapy is still to be confirmed. Even though new systemic treatment targets have been recognised, especially in patients with intrahepatic cholangiocarcinoma (e.g. IDH and FGFR), there is an urgent need for novel treatment strategies. Genomic profiling of BTC is progressively becoming a reality which allows a better understanding of their biology and potential new targets. This review provides an insight into DNA Damage Repair (DDR) mechanisms, prevalence of DDR-deficient tumours in BTC, and the potential role of DDR in cancer development. Some form of DDR deficiency is expected to be present in around 25% of patients with BTC, and this knowledge could be exploited to potentially increase response to currently-available treatment strategies (chemotherapy, radiotherapy or immunotherapy). For patients with DDR-proficient tumours, drug inhibition of DDR could be instituted.
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Affiliation(s)
- Angela Lamarca
- Department of Medical Oncology, The Christie NHS Foundation Trust, Manchester, UK; Division of Cancer Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
| | - Jorge Barriuso
- Department of Medical Oncology, The Christie NHS Foundation Trust, Manchester, UK; Division of Cancer Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Mairéad G McNamara
- Department of Medical Oncology, The Christie NHS Foundation Trust, Manchester, UK; Division of Cancer Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Juan W Valle
- Department of Medical Oncology, The Christie NHS Foundation Trust, Manchester, UK; Division of Cancer Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
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Liu QH, Wang Y, Yong HM, Hou PF, Pan J, Bai J, Zheng JN. XRCC1 serves as a potential prognostic indicator for clear cell renal cell carcinoma and inhibits its invasion and metastasis through suppressing MMP-2 and MMP-9. Oncotarget 2017; 8:109382-109392. [PMID: 29312615 PMCID: PMC5752528 DOI: 10.18632/oncotarget.22680] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 11/03/2017] [Indexed: 01/21/2023] Open
Abstract
X-ray repair cross-complementing group 1 (XRCC1) is a major DNA repair gene that is responsible for fixing DNA base damage and single-strand breaks by interacting with DNA components at the damage site. This study explored the clinical significance of XRCC1 in human clear cell renal cell carcinoma (ccRCC) and further examined the mechanism of the role of XRCC1 in ccRCC. The clinical relevance of XRCC1 in ccRCC was evaluated using tissue microarrays and immunohistochemical staining of two independent human ccRCC cohorts. Our data demonstrated that XRCC1 expression was dramatically decreased in ccRCC tissues compared with that in normal renal tissues and paired adjacent non-tumor tissues. Low XRCC1 expression was significantly correlated with lymph node metastasis and with worse overall and disease-specific survival in patients, as determined by log-rank tests. However, Cox regression analysis revealed that XRCC1 expression was not an independent prognostic factor in ccRCC patients. Furthermore, XRCC1 suppressed ccRCC migration and invasion by inhibiting MMP-2 and MMP-9 expression through the regulation of TIMP-2 and TIMP-1. These findings indicated that decreased XRCC1 expression was associated with lymph node metastasis but was not an independent prognostic factor in ccRCC patients. XRCC1 may serve as a potential therapeutic target for inhibiting ccRCC metastasis but cannot be used as an independent prognostic factor.
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Affiliation(s)
- Qing-Hua Liu
- Jiangsu Key Laboratory of Biological Cancer Therapy, Xuzhou Medical University, Xuzhou 221002, Jiangsu Province, China.,Department of Pathology, Xuzhou Medical University, Xuzhou 221002, Jiangsu Province, China
| | - You Wang
- Department of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Hong-Mei Yong
- Department of Medical Oncology, Huai'an Hospital to Xuzhou Medical University, Huai'an 223001, Jiangsu Province, China
| | - Ping-Fu Hou
- Jiangsu Key Laboratory of Biological Cancer Therapy, Xuzhou Medical University, Xuzhou 221002, Jiangsu Province, China
| | - Jie Pan
- Jiangsu Key Laboratory of Biological Cancer Therapy, Xuzhou Medical University, Xuzhou 221002, Jiangsu Province, China.,Department of Clinical Oncology, Pizhou people's Hospital, Xuzhou 221002, Jiangsu Province, China
| | - Jin Bai
- Jiangsu Key Laboratory of Biological Cancer Therapy, Xuzhou Medical University, Xuzhou 221002, Jiangsu Province, China
| | - Jun-Nian Zheng
- Jiangsu Key Laboratory of Biological Cancer Therapy, Xuzhou Medical University, Xuzhou 221002, Jiangsu Province, China.,Jiangsu Center for The Collaboration and Innovation of Cancer Biotherapy, Cancer Institute, Xuzhou Medical University, Xuzhou 221002, Jiangsu Province, China.,Center of Clinical Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, Jiangsu Province, China
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9
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Markkanen E. Not breathing is not an option: How to deal with oxidative DNA damage. DNA Repair (Amst) 2017; 59:82-105. [PMID: 28963982 DOI: 10.1016/j.dnarep.2017.09.007] [Citation(s) in RCA: 118] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 09/20/2017] [Indexed: 02/07/2023]
Abstract
Oxidative DNA damage constitutes a major threat to genetic integrity, and has thus been implicated in the pathogenesis of a wide variety of diseases, including cancer and neurodegeneration. 7,8-dihydro-8oxo-deoxyGuanine (8-oxo-G) is one of the best characterised oxidative DNA lesions, and it can give rise to point mutations due to its miscoding potential that instructs most DNA polymerases (Pols) to preferentially insert Adenine (A) opposite 8-oxo-G instead of the correct Cytosine (C). If uncorrected, A:8-oxo-G mispairs can give rise to C:G→A:T transversion mutations. Cells have evolved a variety of pathways to mitigate the mutational potential of 8-oxo-G that include i) mechanisms to avoid incorporation of oxidized nucleotides into DNA through nucleotide pool sanitisation enzymes (by MTH1, MTH2, MTH3 and NUDT5), ii) base excision repair (BER) of 8-oxo-G in DNA (involving MUTYH, OGG1, Pol λ, and other components of the BER machinery), and iii) faithful bypass of 8-oxo-G lesions during replication (using a switch between replicative Pols and Pol λ). In the following, the fate of 8-oxo-G in mammalian cells is reviewed in detail. The differential origins of 8-oxo-G in DNA and its consequences for genetic stability will be covered. This will be followed by a thorough discussion of the different mechanisms in place to cope with 8-oxo-G with an emphasis on Pol λ-mediated correct bypass of 8-oxo-G during MUTYH-initiated BER as well as replication across 8-oxo-G. Furthermore, the multitude of mechanisms in place to regulate key proteins involved in 8-oxo-G repair will be reviewed. Novel functions of 8-oxo-G as an epigenetic-like regulator and insights into the repair of 8-oxo-G within the cellular context will be touched upon. Finally, a discussion will outline the relevance of 8-oxo-G and the proteins involved in dealing with 8-oxo-G to human diseases with a special emphasis on cancer.
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Affiliation(s)
- Enni Markkanen
- Institute of Veterinary Pharmacology and Toxicology, Vetsuisse Faculty, University of Zürich, Winterthurerstr. 260, 8057 Zürich, Switzerland.
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