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Peng L, Lidan H, Cuicui Z, Zhe Z, Sen Y, Xuan W, Ganghua L, Chao Z, Zhensheng L, Qiming W. DNA double-strand break repair capacity and its pathway gene variants predict the risk and prognosis of lung cancer. Lung Cancer 2024; 192:107831. [PMID: 38805902 DOI: 10.1016/j.lungcan.2024.107831] [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: 03/23/2024] [Revised: 05/19/2024] [Accepted: 05/23/2024] [Indexed: 05/30/2024]
Abstract
OBJECTIVES This study aims to investigate the association between DNA double-strand breaks (DSBs) repair capacity, variations in DSBs-related genes, and the occurrence and prognosis of lung cancer in the Chinese population. METHODS Peripheral blood mononuclear cells (PBMC) were collected from 98 lung cancer patients and 60 healthy individuals. The individual DSBs repair capacity was assessed by measuring changes in γ-H2AX levels after treatment with etoposide. Exonic sequencing of 45 DSBs-related genes was performed on PBMC DNA. Logistic regression analysis was conducted to examine the relationship between lung cancer risk and DSBs repair capacity as well as germlines gene variations. Survival analysis employed the Cox proportional hazards regression model, Kaplan-Meier method, and Log-rank test. RESULTS Lower DSBs repair capacity predicted an increased risk of developing lung cancer (OR = 0.94, 95 %CI = 0.917-0.964, P<0.001). Among lung cancer patients, higher DSBs repair capacity was associated with shorter progression-free survival (PFS) during first-line treatment (HR = 1.80, 95 %CI = 1.10-3.00, P = 0.031). Patients with BRCA1 mutations had shorter overall survival (OS) (HR = 1.92, 95 %CI = 1.12-3.28, P = 0.018). Patients with FOXO3 mutations had shorter PFS (HR = 4.23, 95 %CI = 1.44-12.36, P = 0.009). Analysis of patients treated with immune checkpoint inhibitors (ICIs) indicated that LIG4 mutations were associated with shorter PFS (HR = 2.90, 95 %CI = 1.00-8.10, P = 0.041). CONCLUSIONS This study concludes that assessing DSBs repair capacity holds promise for predicting both lung cancer risk and prognosis in the Chinese population. Further large-scale studies and functional validation of specific gene mutations related to double-strand breaks are necessary for confirmation.
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Affiliation(s)
- Li Peng
- Department of Internal Medicine, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou 450008, China; Institute of Cancer Research, Henan Academy of Innovations in Medical Science, Zhengzhou 450008, China
| | - Hao Lidan
- Department of Internal Medicine, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou 450008, China
| | - Zhang Cuicui
- Department of Internal Medicine, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou 450008, China; Institute of Cancer Research, Henan Academy of Innovations in Medical Science, Zhengzhou 450008, China
| | - Zhang Zhe
- Department of Internal Medicine, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou 450008, China; Institute of Cancer Research, Henan Academy of Innovations in Medical Science, Zhengzhou 450008, China
| | - Yang Sen
- Department of Internal Medicine, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou 450008, China; Institute of Cancer Research, Henan Academy of Innovations in Medical Science, Zhengzhou 450008, China
| | - Wu Xuan
- Department of Internal Medicine, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou 450008, China
| | - Li Ganghua
- Geneplus-Shenzhen, Shenzhen 518000, China
| | - Zhang Chao
- Geneplus-Shenzhen, Shenzhen 518000, China
| | - Liu Zhensheng
- Department of Internal Medicine, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou 450008, China
| | - Wang Qiming
- Department of Internal Medicine, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou 450008, China; Institute of Cancer Research, Henan Academy of Innovations in Medical Science, Zhengzhou 450008, China.
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Liu Y, Lu L, Yang H, Wu X, Luo X, Shen J, Xiao Z, Zhao Y, Du F, Chen Y, Deng S, Cho CH, Li Q, Li X, Li W, Wang F, Sun Y, Gu L, Chen M, Li M. Dysregulation of immunity by cigarette smoking promotes inflammation and cancer: A review. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 339:122730. [PMID: 37838314 DOI: 10.1016/j.envpol.2023.122730] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 09/26/2023] [Accepted: 10/11/2023] [Indexed: 10/16/2023]
Abstract
Smoking is a serious global health issue. Cigarette smoking contains over 7000 different chemicals. The main harmful components include nicotine, acrolein, aromatic hydrocarbons and heavy metals, which play the key role for cigarette-induced inflammation and carcinogenesis. Growing evidences show that cigarette smoking and its components exert a remarkable impact on regulation of immunity and dysregulated immunity promotes inflammation and cancer. Therefore, this comprehensive and up-to-date review covers four interrelated topics, including cigarette smoking, inflammation, cancer and immune system. The known harmful chemicals from cigarette smoking were summarized. Importantly, we discussed in depth the impact of cigarette smoking on the formation of inflammatory or tumor microenvironment, primarily by affecting immune effector cells, such as macrophages, neutrophils, and T lymphocytes. Furthermore, the main molecular mechanisms by which cigarette smoking induces inflammation and cancer, including changes in epigenetics, DNA damage and others were further summarized. This article will contribute to a better understanding of the impact of cigarette smoking on inducing inflammation and cancer.
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Affiliation(s)
- Yubin Liu
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China; Cell Therapy & Cell Drugs of Luzhou Key Laboratory, Luzhou, Sichuan, China
| | - Lan Lu
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu, Sichuan, China
| | - Huan Yang
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China; Cell Therapy & Cell Drugs of Luzhou Key Laboratory, Luzhou, Sichuan, China
| | - Xu Wu
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China; Cell Therapy & Cell Drugs of Luzhou Key Laboratory, Luzhou, Sichuan, China; South Sichuan Institute of Translational Medicine, Luzhou, Sichuan, China
| | - Xinyue Luo
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
| | - Jing Shen
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China; Cell Therapy & Cell Drugs of Luzhou Key Laboratory, Luzhou, Sichuan, China; South Sichuan Institute of Translational Medicine, Luzhou, Sichuan, China
| | - Zhangang Xiao
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China; Cell Therapy & Cell Drugs of Luzhou Key Laboratory, Luzhou, Sichuan, China; South Sichuan Institute of Translational Medicine, Luzhou, Sichuan, China
| | - Yueshui Zhao
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China; Cell Therapy & Cell Drugs of Luzhou Key Laboratory, Luzhou, Sichuan, China; South Sichuan Institute of Translational Medicine, Luzhou, Sichuan, China
| | - Fukuan Du
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China; Cell Therapy & Cell Drugs of Luzhou Key Laboratory, Luzhou, Sichuan, China; South Sichuan Institute of Translational Medicine, Luzhou, Sichuan, China
| | - Yu Chen
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China; Cell Therapy & Cell Drugs of Luzhou Key Laboratory, Luzhou, Sichuan, China; South Sichuan Institute of Translational Medicine, Luzhou, Sichuan, China
| | - Shuai Deng
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China; Cell Therapy & Cell Drugs of Luzhou Key Laboratory, Luzhou, Sichuan, China; South Sichuan Institute of Translational Medicine, Luzhou, Sichuan, China
| | - Chi Hin Cho
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China; Cell Therapy & Cell Drugs of Luzhou Key Laboratory, Luzhou, Sichuan, China
| | - Qianxiu Li
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China; Cell Therapy & Cell Drugs of Luzhou Key Laboratory, Luzhou, Sichuan, China
| | - Xiaobing Li
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
| | - Wanping Li
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
| | - Fang Wang
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
| | - Yuhong Sun
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
| | - Li Gu
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
| | - Meijuan Chen
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
| | - Mingxing Li
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China; Cell Therapy & Cell Drugs of Luzhou Key Laboratory, Luzhou, Sichuan, China; South Sichuan Institute of Translational Medicine, Luzhou, Sichuan, China.
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Combining Phenotypes of Nucleotide Excision Repair Pathway to Predict the Risk of Head and Neck Squamous Cell Carcinomas in a Chinese Population. DISEASE MARKERS 2022; 2022:4959737. [PMID: 36118674 PMCID: PMC9476247 DOI: 10.1155/2022/4959737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 07/17/2022] [Accepted: 08/01/2022] [Indexed: 11/28/2022]
Abstract
Background Nucleotide excision repair (NER) is pivotal in the development of smoking-related malignancies. Nine core genes (XPA, XPB, XPC, XPD, XPF, XPG, ERCC1, DDB1, and DDB2) are highly involved in the NER process. We combined two phenotypes of NER pathway (NER protein and NER gene mRNA expression) and evaluated their associations with the risks of the head and neck squamous cell carcinomas (HNSCCs) in a Chinese population. Methods We conducted a case-control study of 337 HNSCC patients and 285 cancer-free controls by measuring the expression levels of nine core NER proteins and NER gene mRNA in cultured peripheral lymphocytes. Results Compared with the controls, cases had statistically significantly lower protein expression levels of XPA (P < 0.001) and lower mRNA expression levels of XPA and XPB (P = 0.005 and 0.001, respectively). After dividing the subjects by controls' medians of expression levels, we found an association between increased risks of HNSCCs and low XPA protein level (Ptrend = 0.031), as well as low mRNA levels of XPA and XPB (Ptrend = 0.024 and 0.001, respectively). Subsequently, we correlated the two phenotypes and found associations between the NER mRNA and protein levels. Finally, the sensitivity of the expanded model with protein and mRNA expression levels, in addition to demographic variables, on HNSCCs risk was significantly improved. Conclusions Combining two phenotypes of NER pathway may be more effective than the model only including one single phenotype for the assessment of risks of HNSCCs.
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Zhou C, Fabbrizi MR, Hughes JR, Grundy GJ, Parsons JL. Effectiveness of PARP inhibition in enhancing the radiosensitivity of 3D spheroids of head and neck squamous cell carcinoma. Front Oncol 2022; 12:940377. [PMID: 36052247 PMCID: PMC9424551 DOI: 10.3389/fonc.2022.940377] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 07/20/2022] [Indexed: 12/24/2022] Open
Abstract
A critical risk factor for head and neck squamous cell carcinoma (HNSCC), particularly of the oropharynx, and the response to radiotherapy is human papillomavirus (HPV) type-16/18 infection. Specifically, HPV-positive HNSCC display increased radiosensitivity and improved outcomes, which has been linked with defective signalling and repair of DNA double-strand breaks (DSBs). This differential response to radiotherapy has been recapitulated in vitro using cell lines, although studies utilising appropriate 3D models that are more reflective of the original tumour are scarce. Furthermore, strategies to enhance the sensitivity of relatively radioresistant HPV-negative HNSCC to radiotherapy are still required. We have analysed the comparative response of in vitro 3D spheroid models of oropharyngeal squamous cell carcinoma to x-ray (photon) irradiation and provide further evidence that HPV-positive cells, in this case now grown as spheroids, show greater inherent radiosensitivity compared to HPV-negative spheroids due to defective DSB repair. We subsequently analysed these and an expanded number of spheroid models, with a particular focus on relatively radioresistant HPV-negative HNSCC, for impact of poly(ADP-ribose) polymerase (PARP) inhibitors (olaparib and talazoparib) in significantly inhibiting spheroid growth in response to photons but also proton beam therapy. We demonstrate that in general, PARP inhibition can further radiosensitise particularly HPV-negative HNSCC spheroids to photons and protons leading to significant growth suppression. The degree of enhanced radiosensitivity was observed to be dependent on the model and on the tumour site (oropharynx, larynx, salivary gland, or hypopharynx) from which the cells were derived. We also provide evidence suggesting that PARP inhibitor effectiveness relates to homologous recombination repair proficiency. Interestingly though, we observed significantly enhanced effectiveness of talazoparib versus olaparib specifically in response to proton irradiation. Nevertheless, our data generally support that PARP inhibition in combination with radiotherapy (photons and protons) should be considered further as an effective treatment for HNSCC, particularly for relatively radioresistant HPV-negative tumours.
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Affiliation(s)
- Chumin Zhou
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Maria Rita Fabbrizi
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Jonathan R. Hughes
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Gabrielle J. Grundy
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Jason L. Parsons
- Department of Molecular and Clinical Cancer Medicine, University of Liverpool, Liverpool, United Kingdom
- Clatterbridge Cancer Centre NHS Foundation Trust, Bebington, United Kingdom
- *Correspondence: Jason L. Parsons,
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Wu HC, Kehm R, Santella RM, Brenner DJ, Terry MB. DNA repair phenotype and cancer risk: a systematic review and meta-analysis of 55 case-control studies. Sci Rep 2022; 12:3405. [PMID: 35233009 PMCID: PMC8888613 DOI: 10.1038/s41598-022-07256-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Accepted: 02/15/2022] [Indexed: 01/01/2023] Open
Abstract
DNA repair phenotype can be measured in blood and may be a potential biomarker of cancer risk. We conducted a systematic review and meta-analysis of epidemiological studies of DNA repair phenotype and cancer through March 2021. We used random-effects models to calculate pooled odds ratios (ORs) of cancer risk for those with the lowest DNA repair capacity compared with those with the highest capacity. We included 55 case–control studies that evaluated 12 different cancers using 10 different DNA repair assays. The pooled OR of cancer risk (all cancer types combined) was 2.92 (95% Confidence Interval (CI) 2.49, 3.43) for the lowest DNA repair. Lower DNA repair was associated with all studied cancer types, and pooled ORs (95% CI) ranged from 2.02 (1.43, 2.85) for skin cancer to 7.60 (3.26, 17.72) for liver cancer. All assays, except the homologous recombination repair assay, showed statistically significant associations with cancer. The effect size ranged from 1.90 (1.00, 3.60) for the etoposide-induced double-strand break assay to 5.06 (3.67, 6.99) for the γ-H2AX assay. The consistency and strength of the associations support the use of these phenotypic biomarkers; however large-scale prospective studies will be important for understanding their use related to age and screening initiation.
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Affiliation(s)
- Hui-Chen Wu
- Department of Environmental Health Sciences, Mailman School of Public Health of Columbia University, 630 West 168th St., Room P&S 16-421E, New York, NY, 10032, USA. .,Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY, USA.
| | - Rebecca Kehm
- Department of Epidemiology, Mailman School of Public Health of Columbia University, New York, NY, USA
| | - Regina M Santella
- Department of Environmental Health Sciences, Mailman School of Public Health of Columbia University, 630 West 168th St., Room P&S 16-421E, New York, NY, 10032, USA.,Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY, USA
| | - David J Brenner
- Center for Radiological Research, Columbia University Irving Medical Center, 630W 168th Street, New York, NY, 10032, USA
| | - Mary Beth Terry
- Department of Environmental Health Sciences, Mailman School of Public Health of Columbia University, 630 West 168th St., Room P&S 16-421E, New York, NY, 10032, USA.,Department of Epidemiology, Mailman School of Public Health of Columbia University, New York, NY, USA
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Human Papillomavirus and Squamous Cell Carcinoma of Unknown Primary in the Head and Neck Region: A Comprehensive Review on Clinical Implications. Viruses 2021; 13:v13071297. [PMID: 34372502 PMCID: PMC8310239 DOI: 10.3390/v13071297] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 06/28/2021] [Accepted: 06/29/2021] [Indexed: 01/02/2023] Open
Abstract
Squamous cell carcinoma of unknown primary (SCCUP) is a challenging diagnostic subgroup of oropharyngeal squamous cell carcinoma (OPSCC). The incidence of SCCUP is increasing in parallel with the well-documented increase in OPSCC and is likewise driven by the increase in human papillomavirus (HPV). The SCCUP patient often presents with a cystic lymph node metastasis and undergoes an aggressive diagnostic and treatment program. Detection of HPV in cytologic specimens indicates an oropharyngeal primary tumor origin and can guide the further diagnostic strategy. Advances in diagnostic modalities, e.g., transoral robotic surgery and transoral laser microsurgery, have increased the successful identification of the primary tumor site in HPV-induced SCCUP, and this harbors a potential for de-escalation treatment and increased survival. This review provides an overview of HPV-induced SCCUP, diagnostic modalities, and treatment options.
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Qin J, Fan J, Li G, Liu S, Liu Z, Wu Y. DNA double-strand break repair gene mutation and the risk of papillary thyroid microcarcinoma: a case-control study. Cancer Cell Int 2021; 21:334. [PMID: 34215272 PMCID: PMC8252242 DOI: 10.1186/s12935-021-02032-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 06/19/2021] [Indexed: 11/23/2022] Open
Abstract
Objective To study the relationship between DNA double-strand break (DSB) repair gene mutations and the risk of papillary thyroid microcarcinoma (PTMC). Methods One hundred patients with PTMC or benign thyroid nodules (BTNs) at Henan Cancer Hospital were retrospectively analyzed. The DSB repair capacity of peripheral blood T lymphocytes in the two groups was assessed by flow cytometry. Data were compared using Student’s t-test to evaluate the relationship between DSB repair capacity and the risk of PTMC. Factors influencing DSB repair capacity were analyzed by multivariate logistic regression analysis. The relationship between PTMC and DSB repair capacity was analyzed by univariate analysis. Targeted next-generation DNA sequencing was applied to screen and analyze DSB repair genes related to PTMC. Results The DSB repair capacity was 31.30% in the PTMC group and 44.40% in the BTN group, with that of the former being significantly lower (P < 0.05). Multivariate logistic regression analysis of age, sex, obesity status, radiation and other factors showed that radiation exposure was positively correlated with reduced DSB repair capacity(OR = 3.642; 95% CI 1.484–8.935, P = 0.020). Moreover, univariate analysis showed that a reduction in DSB repair capacity was a risk factor for PTMC(OR = 2.333; 95% CI 1.027–5.300, P = 0.043).Targeted next-generation DNA sequencing was performed on the DSB repair genes discovered, and those that were mutated in association with PTMC were Rad50 and FANCA; Rad51 mutations were related to BTN. Conclusion Radiation exposure is positively associated with induced DSB repair gene mutations, which may cause a reduced capacity for DSB repair and eventually lead to PTMC. Supplementary Information The online version contains supplementary material available at 10.1186/s12935-021-02032-5.
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Affiliation(s)
- Jiali Qin
- Department of Head and Neck Thyroid Surgery, Affiliated Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, 450008, China
| | - Jie Fan
- Department of Head and Neck Thyroid Surgery, Affiliated Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, 450008, China
| | - Gang Li
- Department of Head and Neck Thyroid Surgery, Affiliated Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, 450008, China
| | - Shanting Liu
- Department of Head and Neck Thyroid Surgery, Affiliated Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, 450008, China.
| | - Zhensheng Liu
- Department of Head and Neck Thyroid Surgery, Affiliated Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, 450008, China.
| | - Yao Wu
- Department of Head and Neck Thyroid Surgery, Affiliated Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, 450008, China
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Tatin X, Muggiolu G, Sauvaigo S, Breton J. Evaluation of DNA double-strand break repair capacity in human cells: Critical overview of current functional methods. MUTATION RESEARCH. REVIEWS IN MUTATION RESEARCH 2021; 788:108388. [PMID: 34893153 DOI: 10.1016/j.mrrev.2021.108388] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 06/17/2021] [Accepted: 06/23/2021] [Indexed: 02/05/2023]
Abstract
DNA double-strand breaks (DSBs) are highly deleterious lesions, responsible for mutagenesis, chromosomal translocation or cell death. DSB repair (DSBR) is therefore a critical part of the DNA damage response (DDR) to restore molecular and genomic integrity. In humans, this process is achieved through different pathways with various outcomes. The balance between DSB repair activities varies depending on cell types, tissues or individuals. Over the years, several methods have been developed to study variations in DSBR capacity. Here, we mainly focus on functional techniques, which provide dynamic information regarding global DSB repair proficiency or the activity of specific pathways. These methods rely on two kinds of approaches. Indirect techniques, such as pulse field gel electrophoresis (PFGE), the comet assay and immunofluorescence (IF), measure DSB repair capacity by quantifying the time-dependent decrease in DSB levels after exposure to a DNA-damaging agent. On the other hand, cell-free assays and reporter-based methods directly track the repair of an artificial DNA substrate. Each approach has intrinsic advantages and limitations and despite considerable efforts, there is currently no ideal method to quantify DSBR capacity. All techniques provide different information and can be regarded as complementary, but some studies report conflicting results. Parameters such as the type of biological material, the required equipment or the cost of analysis may also limit available options. Improving currently available methods measuring DSBR capacity would be a major step forward and we present direct applications in mechanistic studies, drug development, human biomonitoring and personalized medicine, where DSBR analysis may improve the identification of patients eligible for chemo- and radiotherapy.
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Affiliation(s)
- Xavier Tatin
- Univ. Grenoble Alpes, CEA, CNRS, IRIG, SyMMES, 38000 Grenoble, France; LXRepair, 5 Avenue du Grand Sablon, 38700 La Tronche, France
| | | | - Sylvie Sauvaigo
- LXRepair, 5 Avenue du Grand Sablon, 38700 La Tronche, France
| | - Jean Breton
- Univ. Grenoble Alpes, CEA, CNRS, IRIG, SyMMES, 38000 Grenoble, France.
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Toprani SM, Kelkar Mane V. A short review on DNA damage and repair effects in lip cancer. Hematol Oncol Stem Cell Ther 2021; 14:267-274. [PMID: 33626329 DOI: 10.1016/j.hemonc.2021.01.007] [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: 11/15/2020] [Revised: 01/20/2021] [Accepted: 01/26/2021] [Indexed: 11/28/2022] Open
Abstract
Increasing trend in oral cancer (0.6% per year) and its related mortality has been reported worldwide since 2010. The United States alone reports an increase of 57% within the past 10 years. This emphasizes the need not only for designing strategies of prevention and planning but also for an effective treatment regime for the various oral cancers. Cancers of the lips, tongue, cheeks, floor of the mouth, and hard palate have been primarily classified under the category of oral cancers. If left undiagnosed, these cancers can be life threatening. Amongst these, the most undesignated and understudied cancer type is the lip carcinoma, which is either categorized under oral cancer or/as well as skin cancer or head and neck cancer. However, lip cancer corresponds to 25-30% of all diagnosed oral cancers. Though the etiology of lip cancer is not yet fully understood, numerous risk factors involved in its development are now being studied. The cells in the lip region are continuously exposed to various DNA damaging agents from endogenous as well as exogenous sources. Flaws in DNA repair mechanisms involved in eliminating these damages may be linked to the origin of carcinogenesis. Accumulation of DNA damage and defect in repair mechanisms may play a role in lip carcinogenesis and progression. This literature review is an exhaustive compilation of the research work performed on the role of DNA damage and repair responses in lip carcinoma which will pave a path for researchers to identify predictive DNA repair biomarker/s for lip cancer, and its diagnosis, prevention, and treatment.
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Affiliation(s)
- Sneh M Toprani
- Department of Biotechnology, University of Mumbai, Mumbai, India; John B Little Center of Radiation Sciences, Department of Environmental Health, Harvard T H Chan School of Public Health, Boston, MA 02115, USA.
| | - Varsha Kelkar Mane
- John B Little Center of Radiation Sciences, Department of Environmental Health, Harvard T H Chan School of Public Health, Boston, MA 02115, USA
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Ren P, Niu X, Liu C, Liu J, Li H, Zhao Q, Xing J, Bai Y, Liang Y, Han P. Associations between expression levels of nine core nucleotide excision repair genes in lymphocytes and risk of head and neck squamous cell carcinomas in a Chinese population. Int J Clin Oncol 2019; 25:660-669. [PMID: 31832883 DOI: 10.1007/s10147-019-01586-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 11/21/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUND Head and neck squamous cell carcinomas (HNSCCs) are one of the most common cancers in the world, and nucleotide excision repair (NER) is involved in HNSCCs susceptibility. We investigated whether mRNA expression levels of nine core NER genes were associated with risk of HNSCCs in a Chinese population. METHODS In this study of 251 HNSCC patients and 232 healthy controls, we quantified NER gene mRNA expression levels in cultured peripheral lymphocytes using a quantitative real-time PCR. RESULTS Compared with the controls, HNSCC patients had statistically significantly lower expression levels of XPA and XPB (P = 0.029 and 0.001, respectively). After dividing the subjects by the controls' median values of expression levels, we found a dose-dependent association between an increased risk of HNSCCs and low expression levels of XPB (adjusted OR 1.56 and 95% CI 1.07-2.28; Ptrend = 0.001). We also identified a significant multiplicative interaction between smoking status as well as alcohol status and mRNA expression levels of XPB (P = 0.014 and 0.042, respectively). Finally, after integrating demographic variables, we found the addition of smoking status and XPB expression levels to the model significantly improved the sensitivity of the expanded model on HNSCC risk. CONCLUSION Reduced mRNA expression levels of XPB were associated with an increased risk of HNSCCs in a Chinese population.
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Affiliation(s)
- Pengyu Ren
- Department of Otorhinolaryngology-Head and Neck Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, #227 Yanta West Road, Xi'an, 710061, Shaanxi, People's Republic of China.,Department of Neurosurgery, The Second Affiliated Hospital of Xi'an Jiaotong University, #157 Xiwu Road, Xi'an, 710004, Shaanxi, People's Republic of China
| | - Xiaorong Niu
- Department of Otorhinolaryngology-Head and Neck Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, #227 Yanta West Road, Xi'an, 710061, Shaanxi, People's Republic of China
| | - Chang Liu
- Department of Anesthesia, The First Affiliated Hospital of Xi'an Jiaotong University, #227 Yanta West Road, Xi'an, 710061, Shaanxi, People's Republic of China
| | - Junsong Liu
- Department of Otorhinolaryngology-Head and Neck Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, #227 Yanta West Road, Xi'an, 710061, Shaanxi, People's Republic of China
| | - Honghui Li
- Department of Otorhinolaryngology-Head and Neck Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, #227 Yanta West Road, Xi'an, 710061, Shaanxi, People's Republic of China
| | - Qian Zhao
- Department of Otorhinolaryngology-Head and Neck Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, #227 Yanta West Road, Xi'an, 710061, Shaanxi, People's Republic of China
| | - Juanli Xing
- Department of Otorhinolaryngology-Head and Neck Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, #227 Yanta West Road, Xi'an, 710061, Shaanxi, People's Republic of China
| | - Yanxia Bai
- Department of Otorhinolaryngology-Head and Neck Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, #227 Yanta West Road, Xi'an, 710061, Shaanxi, People's Republic of China
| | - Yiqian Liang
- Department of Nuclear Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, #227 Yanta West Road, Xi'an, 710061, Shaanxi, People's Republic of China.
| | - Peng Han
- Department of Otorhinolaryngology-Head and Neck Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, #227 Yanta West Road, Xi'an, 710061, Shaanxi, People's Republic of China.
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11
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Assessment of DNA repair susceptibility genes identified by whole exome sequencing in head and neck cancer. DNA Repair (Amst) 2018; 66-67:50-63. [PMID: 29747023 DOI: 10.1016/j.dnarep.2018.04.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 04/24/2018] [Accepted: 04/24/2018] [Indexed: 12/31/2022]
Abstract
Head and neck cancer (HNC), the sixth most common cancer globally, stands second in India. In Northeast (NE) India, it is the sixth most common cause of death in males and seventh in females. Prolonged tobacco and alcohol consumption constitute the major etiological factors for HNC development, which induce DNA damage. Therefore, DNA repair pathway is a crucial system in maintaining genomic integrity and preventing carcinogenesis. The present work was aimed to predict the consequence of significant germline variants of the DNA repair genes in disease predisposition. Whole exome sequencing was performed in Ion Proton™ platform on 15 case-control samples from the HNC-prevalent states of Manipur, Mizoram, and Nagaland. Variant annotation was done in Ion Reporter™ as well as wANNOVAR. Subsequent statistical and bioinformatics analysis identified significant exonic and intronic variants associated with HNC. Amongst our observed variants, 78.6% occurred in ExAC, 94% reported in dbSNP and 5.8% & 9.3% variants were present in ClinVar and HGMD, respectively. The total variants were dispersed among 199 genes with DSBR and FA pathway being the most mutated pathways. The allelic association test suggested that the intronic variants in HLTF and RAD52 gene significantly associated (P < 0.05) with the risk (OR > 5), while intronic variants in PARP4, RECQL5, EXO1 and PER1 genes and exonic variant in TDP2 gene showed protection (OR < 1) for HNC. MDR analysis proposed the exonic variants in MSH6, BRCA2, PALB2 and TP53 genes and intronic variant in RECQL5 genetic region working together during certain phase of DNA repair mechanism for HNC causation. In addition, other intronic and 3'UTR variations caused modifications in the transcription factor binding sites and miRNA target sites associated with HNC. Large-scale validation in NE Indian population, in-depth structure prediction and subsequent simulation of our recognized polymorphisms is necessary to identify true causal variants related to HNC.
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12
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Han P, Liu H, Shi Q, Liu Z, Troy JD, Lee WT, Zevallos JP, Li G, Sturgis EM, Wei Q. Associations between expression levels of nucleotide excision repair proteins in lymphoblastoid cells and risk of squamous cell carcinoma of the head and neck. Mol Carcinog 2018. [PMID: 29528139 DOI: 10.1002/mc.22801] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Squamous cell carcinoma of head and neck (SCCHN) is one of the most common malignancies worldwide, and nucleotide excision repair (NER) is involved in SCCHN susceptibility. In this analysis of 349 newly diagnosed SCCHN patients and 295 cancer-free controls, we investigated whether expression levels of eight core NER proteins were associated with risk of SCCHN. We quantified NER protein expression levels in cultured peripheral lymphocytes using a reverse-phase protein microarray. Compared with the controls, SCCHN patients had statistically significantly lower expression levels of ERCC3 and XPA (P = 0.001 and 0.001, respectively). After dividing the subjects by controls' median values of expression levels, we found a dose-dependent association between an increased risk of SCCHN and low expression levels of ERCC3 (adjusted OR, 1.75, and 95% CI: 1.26-2.42; Ptrend = 0.008) and XPA (adjusted OR, 1.88; 95% CI, 1.35-2.60; Ptrend = 0.001). We also identified a significant multiplicative interaction between smoking status and ERCC3 expression levels (P = 0.014). Finally, after integrating demographic and clinical variables, we found that the addition of ERCC3 and XPA expression levels to the model significantly improved the sensitivity of the expanded model on SCCHN risk. In conclusion, reduced protein expression levels of ERCC3 and XPA were associated with an increased risk of SCCHN. However, these results need to be confirmed in additional large studies.
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Affiliation(s)
- Peng Han
- Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina.,Department of Medicine, Duke University School of Medicine, Durham, North Carolina.,Department of Otorhinolaryngology-Head and Neck Surgery, First Affiliated Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, Shaanxi, P.R. China
| | - Hongliang Liu
- Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina.,Department of Medicine, Duke University School of Medicine, Durham, North Carolina
| | - Qiong Shi
- Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina.,Department of Medicine, Duke University School of Medicine, Durham, North Carolina.,Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, P.R. China
| | - Zhensheng Liu
- Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina.,Department of Medicine, Duke University School of Medicine, Durham, North Carolina
| | - Jesse D Troy
- Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina.,Division of Blood and Marrow Transplantation, Duke University Medical Center, Durham, North Carolina
| | - Walter T Lee
- Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina.,Division of Head and Neck Surgery and Communication Sciences, Department of Surgery, Duke University Medical Center, Durham, North Carolina
| | - Jose P Zevallos
- Department of Otolaryngology-Head and Neck Surgery, Washington University School of Medicine, St. Louis, Missouri.,Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Guojun Li
- Departments of Head and Neck Surgery, The University of Texas M.D. Anderson Cancer Center, Houston, Texas.,Department of Epidemiology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas
| | - Erich M Sturgis
- Departments of Head and Neck Surgery, The University of Texas M.D. Anderson Cancer Center, Houston, Texas.,Department of Epidemiology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas
| | - Qingyi Wei
- Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina.,Department of Medicine, Duke University School of Medicine, Durham, North Carolina.,Department of Population Health Sciences, Duke University School of Medicine, Durham, North Carolina
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13
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Han P, Gao F, Liu H, Liu Z, Shi Q, Troy JD, Owzar K, Lee W, Zevallos JP, Sturgis EM, Wei Q. Reduced mRNA expression of nucleotide excision repair genes in lymphocytes and risk of squamous cell carcinoma of the head and neck. Carcinogenesis 2017; 38:504-510. [PMID: 28379545 DOI: 10.1093/carcin/bgx028] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Accepted: 03/15/2017] [Indexed: 12/31/2022] Open
Abstract
Nucleotide excision repair (NER) plays a critical role in the development of smoking-related cancers. We hypothesize that mRNA expression levels of NER genes are associated with risk of the squamous cell carcinoma of head and neck (SCCHN). To test this hypothesis, we conducted a case-control study of 260 SCCHN patients and 246 cancer-free controls by measuring the mRNA expression levels of eight core NER genes in cultured peripheral lymphocytes. Compared with the controls, cases had statistically significantly lower expression levels of DDB1 and ERCC3 (P = 0.015 and 0.041, respectively). Because DDB1 and ERCC3 expression levels were highly correlated, we used DDB1 for further multivariate analyses and modeling. After dividing the subjects by controls' quartiles of expression levels, we found an association between an increased risk of SCCHN and low DDB1 expression levels [adjusted ORs and 95% CIs: 1.92 and 1.11-3.32, 1.48 and 0.85-2.59, 2.00 and 1.15-3.45 for the 2nd-4th quartiles, respectively, compared with the 1st quartile; Ptrend = 0.026]. We also identified a multiplicative interaction between sex and DDB1 expression levels (P = 0.007). Finally, the expanded model with gene expression levels, in addition to demographic and clinical variables, on SCCHN risk was significantly improved, especially among men. In conclusion, reduced DDB1 expression levels were associated with an increased risk of SCCHN. However, these results need to be validated in larger studies.
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Affiliation(s)
- Peng Han
- Duke Cancer Institute, Duke University Medical Center and.,Department of Medicine, Duke University School of Medicine, Durham, NC, 27710, USA.,Department of Otorhinolaryngology-Head and Neck Surgery, Second Affiliated Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, Shaanxi, 710004, PR China
| | - Fengqin Gao
- Duke Cancer Institute, Duke University Medical Center and.,Department of Medicine, Duke University School of Medicine, Durham, NC, 27710, USA
| | - Hongliang Liu
- Duke Cancer Institute, Duke University Medical Center and.,Department of Medicine, Duke University School of Medicine, Durham, NC, 27710, USA
| | - Zhensheng Liu
- Duke Cancer Institute, Duke University Medical Center and.,Department of Medicine, Duke University School of Medicine, Durham, NC, 27710, USA
| | - Qiong Shi
- Duke Cancer Institute, Duke University Medical Center and.,Department of Medicine, Duke University School of Medicine, Durham, NC, 27710, USA
| | - Jesse D Troy
- Duke Cancer Institute, Duke University Medical Center and.,Division of Blood and Marrow Transplantation and
| | - Kouros Owzar
- Duke Cancer Institute, Duke University Medical Center and.,Department of Biostatistics and Bioinformatics, Duke University Medical Center, Durham, NC, 27710, USA
| | - Walter Lee
- Duke Cancer Institute, Duke University Medical Center and.,Division of Head and Neck Surgery Communications Science, Department of Surgery, Duke University Medical Center, Durham, NC, 27710, USA
| | - Jose P Zevallos
- Department of Otolaryngology-Head and Neck Surgery and.,Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA and
| | - Erich M Sturgis
- Departments of Head and Neck Surgery and.,Department of Epidemiology, The University of Texas M.D. Anderson Cancer Center, Houston, TX, 77030, USA
| | - Qingyi Wei
- Duke Cancer Institute, Duke University Medical Center and.,Department of Medicine, Duke University School of Medicine, Durham, NC, 27710, USA
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14
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Kampeerawipakorn O, Navasumrit P, Settachan D, Promvijit J, Hunsonti P, Parnlob V, Nakngam N, Choonvisase S, Chotikapukana P, Chanchaeamsai S, Ruchirawat M. Health risk evaluation in a population exposed to chemical releases from a petrochemical complex in Thailand. ENVIRONMENTAL RESEARCH 2017; 152:207-213. [PMID: 27792945 DOI: 10.1016/j.envres.2016.10.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 09/12/2016] [Accepted: 10/08/2016] [Indexed: 05/28/2023]
Abstract
Emissions from petrochemical industries may contain toxic and carcinogenic compounds that can pose health risk to human populations. The scenario may be worse in developing countries where management of such exposure-health problems is typically not well-implemented and the public may not be well-informed about such health risk. In Thailand, increasing incidences of respiratory diseases and cancers have been reported for the population around a major petrochemical complex, the Map Ta Phut Industrial Estate (MTPIE). This study aimed to systematically investigate an exposure-health risk among these populations. One-hundred and twelve healthy residents living nearby MTPIE and 50 controls located approximately 40km from MTPIE were recruited. Both external and internal exposure doses to benzene and 1,3-butadiene, known to be associated with the types of cancer that are of concern, were measured because they represent exposure to industrial and/or traffic-related emissions. Health risk was assessed using the biomarkers of early biological effects for cancer and inflammatory responses, as well as biomarkers of exposure for benzene and 1,3-butadiene. The exposure levels of benzene and 1,3-butadiene were similar for both the exposed and control groups. This was confirmed by a non-significant difference in the levels of specific urinary metabolites for benzene (trans,trans-muconic acid, t,t-MA) and 1,3-butadiene (monohydroxy-butyl mercapturic acid, MHBMA). Levels of 8-hydroxydeoxyguanosine (8-OHdG) and DNA strand breaks between the two groups were not statistically significantly different. However, functional biomarkers, interleukin-8 (IL-8) expression was significantly higher (p<0.01) and DNA repair capacity was lower (p<0.05) in the exposed residents compared to the control subjects. This suggests that the exposed residents may have a higher risk for development of diseases such as cancer compared to controls. However, the increased expression of IL-8 and lower DNA repair capacity were not associated with recent and excessive exposure to benzene and 1,3-butadiene, which were at the similar levels as those in the controls. The data would indicate that previous exposure to the two chemicals together with exposure to other toxic chemicals from the MTPIE may be responsible for the elevated functional biomarkers and health risk. Further studies are required to determine which other pollutants from the industrial complex could be causing these functional abnormalities.
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Affiliation(s)
- Ormrat Kampeerawipakorn
- Laboratory of Environmental Toxicology, Chulabhorn Research Institute, Lak Si, Bangkok, Thailand
| | - Panida Navasumrit
- Laboratory of Environmental Toxicology, Chulabhorn Research Institute, Lak Si, Bangkok, Thailand; Chulabhorn Graduate Institute, Lak Si, Bangkok, Thailand; Center of Excellence on Environmental Health and Toxicology, CHE, Ministry of Education, Thailand
| | - Daam Settachan
- Laboratory of Environmental Toxicology, Chulabhorn Research Institute, Lak Si, Bangkok, Thailand; Chulabhorn Graduate Institute, Lak Si, Bangkok, Thailand
| | - Jeerawan Promvijit
- Laboratory of Environmental Toxicology, Chulabhorn Research Institute, Lak Si, Bangkok, Thailand
| | - Potchanee Hunsonti
- Laboratory of Environmental Toxicology, Chulabhorn Research Institute, Lak Si, Bangkok, Thailand
| | - Varabhorn Parnlob
- Laboratory of Environmental Toxicology, Chulabhorn Research Institute, Lak Si, Bangkok, Thailand
| | - Netnapa Nakngam
- Laboratory of Environmental Toxicology, Chulabhorn Research Institute, Lak Si, Bangkok, Thailand
| | - Suppachai Choonvisase
- Laboratory of Environmental Toxicology, Chulabhorn Research Institute, Lak Si, Bangkok, Thailand
| | | | - Samroeng Chanchaeamsai
- Laboratory of Environmental Toxicology, Chulabhorn Research Institute, Lak Si, Bangkok, Thailand
| | - Mathuros Ruchirawat
- Laboratory of Environmental Toxicology, Chulabhorn Research Institute, Lak Si, Bangkok, Thailand; Center of Excellence on Environmental Health and Toxicology, CHE, Ministry of Education, Thailand.
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15
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Comet assay: an essential tool in toxicological research. Arch Toxicol 2016; 90:2315-36. [DOI: 10.1007/s00204-016-1767-y] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Accepted: 06/14/2016] [Indexed: 01/02/2023]
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