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Alwehaidah MS, Al-Awadhi R, Roomy MA, Baqer TA. Mitochondrial DNA copy number and risk of papillary thyroid carcinoma. BMC Endocr Disord 2024; 24:138. [PMID: 39090709 PMCID: PMC11295319 DOI: 10.1186/s12902-024-01669-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 07/24/2024] [Indexed: 08/04/2024] Open
Abstract
BACKGROUND Mitochondrial DNA (mtDNA) copy number is associated with tumor activity and carcinogenesis. This study was undertaken to investigate mtDNA copy number in papillary thyroid cancer (PTC) tissues and to evaluate the risk of PTC development. The clinicopathological features of patients and mtDNA copy number were correlated. The value of mtDNA copy number was evaluated as a biomarker for PTC. METHOD DNA was extracted from 105 PTC tissues and 67 control thyroid tissues, and mtDNA copy number mtDNA oxidative damage were determined using qPCR techniques. RESULTS Overall, the relative mtDNA copy number was significantly higher in PTC patients (p < 0.001). The risk of developing PTC increased significantly across the tertiles of mtDNA copy number (p trend < 0.001). The higher the mtDNA copy number tertile, the greater the risk of developing PTC. Patients with follicular variants had an odds ratio of 2.09 (95% CI: 1.78-2.44) compared to those with classical variants (p < 0.001). The level of mtDNA oxidative damage in PTC was significantly elevated compared to controls (p < 0.001). The ROC analysis of mtDNA copy number indicated an area under the curve (AUC) of 77.7% (95% CI: 0.71 to 0.85, p < 0.001) for the ability of mtDNA copy number z-scores in differentiate between PTC and controls. CONCLUSION Our results indicated that the augmentation of mtDNA content plays a significant role during the initiation of thyroid cancer, and it might represent a potential biomarker for predicting the risk of PTC.
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Affiliation(s)
- Materah Salem Alwehaidah
- Department of Medical Laboratory Sciences, Faculty of Allied Health Sciences, Kuwait University, Jabriyah City, Kuwait.
| | - Rana Al-Awadhi
- Department of Medical Laboratory Sciences, Faculty of Allied Health Sciences, Kuwait University, Jabriyah City, Kuwait
| | - Moody Al Roomy
- Department of Medical Laboratory Sciences, Faculty of Allied Health Sciences, Kuwait University, Jabriyah City, Kuwait
| | - Tahani Al Baqer
- Histopathology Laboratory, Cancer Control Center (KCCC), Sabah Health Area, Ministry of Health, Sulaibikhat City, Kuwait
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2
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Cabané P, Correa C, Bode I, Aguilar R, Elorza AA. Biomarkers in Thyroid Cancer: Emerging Opportunities from Non-Coding RNAs and Mitochondrial Space. Int J Mol Sci 2024; 25:6719. [PMID: 38928426 PMCID: PMC11204084 DOI: 10.3390/ijms25126719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2024] [Revised: 06/01/2024] [Accepted: 06/14/2024] [Indexed: 06/28/2024] Open
Abstract
Thyroid cancer diagnosis primarily relies on imaging techniques and cytological analyses. In cases where the diagnosis is uncertain, the quantification of molecular markers has been incorporated after cytological examination. This approach helps physicians to make surgical decisions, estimate cancer aggressiveness, and monitor the response to treatments. Despite the availability of commercial molecular tests, their widespread use has been hindered in our experience due to cost constraints and variability between them. Thus, numerous groups are currently evaluating new molecular markers that ultimately will lead to improved diagnostic certainty, as well as better classification of prognosis and recurrence. In this review, we start reviewing the current preoperative testing methodologies, followed by a comprehensive review of emerging molecular markers. We focus on micro RNAs, long non-coding RNAs, and mitochondrial (mt) signatures, including mtDNA genes and circulating cell-free mtDNA. We envision that a robust set of molecular markers will complement the national and international clinical guides for proper assessment of the disease.
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Affiliation(s)
- Patricio Cabané
- Department of Head and Neck Surgery, Clinica INDISA, Santiago 7520440, Chile; (P.C.); (C.C.)
- Faculty of Medicine, Universidad Andres Bello, Santiago 8370071, Chile
- Department of Basic and Clinical Oncology, Faculty of Medicine, University of Chile, Santiago 8380453, Chile
| | - Claudio Correa
- Department of Head and Neck Surgery, Clinica INDISA, Santiago 7520440, Chile; (P.C.); (C.C.)
- Faculty of Medicine, Universidad Andres Bello, Santiago 8370071, Chile
| | - Ignacio Bode
- Institute of Biomedical Sciences, Faculty of Medicine and Faculty of Life Sciences, Universidad Andres Bello, Santiago 8370071, Chile;
| | - Rodrigo Aguilar
- Institute of Biomedical Sciences, Faculty of Medicine and Faculty of Life Sciences, Universidad Andres Bello, Santiago 8370071, Chile;
| | - Alvaro A. Elorza
- Institute of Biomedical Sciences, Faculty of Medicine and Faculty of Life Sciences, Universidad Andres Bello, Santiago 8370071, Chile;
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3
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Malyutina S, Maximov V, Chervova O, Orlov P, Ivanova A, Mazdorova E, Ryabikov A, Simonova G, Voevoda M. The Relationship between All-Cause Natural Mortality and Copy Number of Mitochondrial DNA in a 15-Year Follow-Up Study. Int J Mol Sci 2023; 24:10469. [PMID: 37445647 DOI: 10.3390/ijms241310469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 06/19/2023] [Indexed: 07/15/2023] Open
Abstract
We explored the relationship between the copy number of mitochondrial DNA (mtDNA-CN) and all-cause natural mortality. We examined a random population sample in 2003/2005 (n = 9360, men/women, 45-69, the HAPIEE project) and followed up for 15 years. Using a nested case-control design, we selected non-external deaths among those free from baseline cardiovascular diseases (CVD) and cancer (n = 371), and a sex- and age-stratified control (n = 785). The odds ratios (ORs) of death were 1.06 (95%CI 1.01-1.11) per one-decile decrease in mtDNA-CN independent of age, sex, metabolic factors, smoking, alcohol intake and education. The age-sex-adjusted ORs of death in the second and first tertiles of mtDNA-CN vs. the top tertile were 2.35 (95% CI 1.70-3.26) and 1.59 (1.16-2.17); an increased risk was confined to the second tertile after controlling for smoking and metabolic factors. The multivariable-adjusted OR of CVD death was 1.92 (95% CI 1.18-3.15) in tertile 2 vs. the top tertile of mtDNA-CN, and for cancer-related death the ORs were 3.66 (95% CI 2.21-6.05) and 2.29 (95% CI 1.43-3.68) in tertiles 2 and 1 vs. the top tertile. In the Siberian population cohort, the mtDNA-CN was an inverse predictor of the 15-year risk of natural mortality, due to the greatest impact of CVD and cancer-related death. The findings merit attention for exploring further the role of mtDNA in human ageing and the diversity of mortality.
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Affiliation(s)
- Sofia Malyutina
- Research Institute of Internal and Preventive Medicine-Branch of Institute of Cytology and Genetics SB RAS, Novosibirsk 630089, Russia
| | - Vladimir Maximov
- Research Institute of Internal and Preventive Medicine-Branch of Institute of Cytology and Genetics SB RAS, Novosibirsk 630089, Russia
| | - Olga Chervova
- UCL Cancer Institute, University College London, London WC1E 6BT, UK
| | - Pavel Orlov
- Research Institute of Internal and Preventive Medicine-Branch of Institute of Cytology and Genetics SB RAS, Novosibirsk 630089, Russia
| | - Anastasiya Ivanova
- Research Institute of Internal and Preventive Medicine-Branch of Institute of Cytology and Genetics SB RAS, Novosibirsk 630089, Russia
| | - Ekaterina Mazdorova
- Research Institute of Internal and Preventive Medicine-Branch of Institute of Cytology and Genetics SB RAS, Novosibirsk 630089, Russia
| | - Andrew Ryabikov
- Research Institute of Internal and Preventive Medicine-Branch of Institute of Cytology and Genetics SB RAS, Novosibirsk 630089, Russia
| | - Galina Simonova
- Research Institute of Internal and Preventive Medicine-Branch of Institute of Cytology and Genetics SB RAS, Novosibirsk 630089, Russia
| | - Mikhail Voevoda
- Research Institute of Internal and Preventive Medicine-Branch of Institute of Cytology and Genetics SB RAS, Novosibirsk 630089, Russia
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Guan X, Li M, Bai Y, Feng Y, Li G, Wei W, Fu M, Li H, Wang C, Jie J, Meng H, Wu X, Deng Q, Li F, Yang H, Zhang X, He M, Guo H. Associations of mitochondrial DNA copy number with incident risks of gastrointestinal cancers: A prospective case-cohort study. Mol Carcinog 2023; 62:224-235. [PMID: 36250641 DOI: 10.1002/mc.23478] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 08/16/2022] [Accepted: 10/03/2022] [Indexed: 01/21/2023]
Abstract
Epidemiological investigations implied that mitochondrial DNA copy number (mtDNAcn) variations could trigger predisposition to multiple cancers, but evidence regarding gastrointestinal cancers (GICs) was still uncertain. We conducted a case-cohort study within the prospective Dongfeng-Tongji cohort, including incident cases of colorectal cancer (CRC, n = 278), gastric cancer (GC, n = 138), and esophageal cancer (EC, n = 72) as well as a random subcohort (n = 1173), who were followed up from baseline to the end of 2018. We determined baseline blood mtDNAcn and associations of mtDNAcn with the GICs risks were estimated by using weighted Cox proportional hazards models. Significant U-shaped associations were observed between mtDNAcn and GICs risks. Compared to subjects within the second quartile (Q2) mtDNAcn subgroup, those within the 1st (Q1), 3rd (Q3), and 4th (Q4) quartile subgroups showed increased risks of CRC (hazard ratio [HR] [95% confidence interval, CI] = 2.27 [1.47-3.52], 1.65 [1.04-2.62], and 2.81 [1.85-4.28], respectively) and total GICs (HR [95%CI] = 1.84 [1.30-2.60], 1.47 [1.03-2.10], and 2.51 [1.82-3.47], respectively], and those within Q4 subgroup presented elevated GC and EC risks (HR [95% CI] = 2.16 [1.31-3.54] and 2.38 [1.13-5.02], respectively). Similar associations of mtDNAcn with CRC and total GICs risks remained in stratified analyzes by age, gender, smoking, and drinking status. This prospective case-cohort study showed U-shaped associations between mtDNAcn and GICs risks, but further research works are needed to uncover underlying biological mechanisms.
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Affiliation(s)
- Xin Guan
- Department of Occupational and Environmental Health, State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Mengying Li
- Department of Occupational and Environmental Health, State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yansen Bai
- Department of Occupational and Environmental Health, State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yue Feng
- Department of Occupational and Environmental Health, State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Guyanan Li
- Department of Occupational and Environmental Health, State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wei Wei
- Department of Occupational and Environmental Health, State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ming Fu
- Department of Occupational and Environmental Health, State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hang Li
- Department of Occupational and Environmental Health, State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chenming Wang
- Department of Occupational and Environmental Health, State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jiali Jie
- Department of Occupational and Environmental Health, State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hua Meng
- Department of Occupational and Environmental Health, State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiulong Wu
- Department of Occupational and Environmental Health, State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qilin Deng
- Department of Occupational and Environmental Health, State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Fangqing Li
- Department of Occupational and Environmental Health, State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Handong Yang
- Dongfeng Central Hospital, Dongfeng Motor Corporation, Hubei University of Medicine, Shiyan, China
| | - Xiaomin Zhang
- Department of Occupational and Environmental Health, State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Meian He
- Department of Occupational and Environmental Health, State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Huan Guo
- Department of Occupational and Environmental Health, State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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5
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Memon AA, Vats S, Sundquist J, Li Y, Sundquist K. Mitochondrial DNA Copy Number: Linking Diabetes and Cancer. Antioxid Redox Signal 2022; 37:1168-1190. [PMID: 36169625 DOI: 10.1089/ars.2022.0100] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Recent Advances: Various studies have suggested that mitochondrial DNA copy number (mtDNA-CN), a surrogate biomarker of mitochondrial dysfunction, is an easily quantifiable biomarker for chronic diseases, including diabetes and cancer. However, current knowledge is limited, and the results are controversial. This has been attributed mainly to methodology and study design. Critical Issues: The incidence of diabetes and cancer has increased significantly in recent years. Moreover, type 2 diabetes (T2D) has been shown to be a risk factor for cancer. mtDNA-CN has been associated with both T2D and cancer. However, it is not known whether mtDNA-CN plays any role in the association between T2D and cancer. Significance: In this review, we have discussed mtDNA-CN in diabetes and cancer, and reviewed the literature and methodology used in published studies so far. Based on the literature review, we have speculated how mtDNA-CN may act as a link between diabetes and cancer. Furthermore, we have provided some recommendations for reliable translation of mtDNA-CN as a biomarker. Future Directions: Further research is required to elucidate the role of mtDNA-CN in the association between T2D and cancer. If established, early lifestyle interventions, such as physical activity and diet control that improve mitochondrial function, may help preventing cancer in patients with T2D. Antioxid. Redox Signal. 37, 1168-1190.
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Affiliation(s)
- Ashfaque A Memon
- Center for Primary Health Care Research, Lund University/Region Skåne, Malmö, Sweden
| | - Sakshi Vats
- Center for Primary Health Care Research, Lund University/Region Skåne, Malmö, Sweden
| | - Jan Sundquist
- Center for Primary Health Care Research, Lund University/Region Skåne, Malmö, Sweden
| | - Yanni Li
- Center for Primary Health Care Research, Lund University/Region Skåne, Malmö, Sweden
| | - Kristina Sundquist
- Center for Primary Health Care Research, Lund University/Region Skåne, Malmö, Sweden
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6
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Abd Radzak SM, Mohd Khair SZN, Ahmad F, Patar A, Idris Z, Mohamed Yusoff AA. Insights regarding mitochondrial DNA copy number alterations in human cancer (Review). Int J Mol Med 2022; 50:104. [PMID: 35713211 PMCID: PMC9304817 DOI: 10.3892/ijmm.2022.5160] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 05/26/2022] [Indexed: 11/25/2022] Open
Abstract
Mitochondria are the critical organelles involved in various cellular functions. Mitochondrial biogenesis is activated by multiple cellular mechanisms which require a synchronous regulation between mitochondrial DNA (mtDNA) and nuclear DNA (nDNA). The mitochondrial DNA copy number (mtDNA-CN) is a proxy indicator for mitochondrial activity, and its alteration reflects mitochondrial biogenesis and function. Despite the precise mechanisms that modulate the amount and composition of mtDNA, which have not been fully elucidated, mtDNA-CN is known to influence numerous cellular pathways that are associated with cancer and as well as multiple other diseases. In addition, the utility of current technology in measuring mtDNA-CN contributes to its extensive assessment of diverse traits and tumorigenesis. The present review provides an overview of mtDNA-CN variations across human cancers and an extensive summary of the existing knowledge on the regulation and machinery of mtDNA-CN. The current information on the advanced methods used for mtDNA-CN assessment is also presented.
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Affiliation(s)
- Siti Muslihah Abd Radzak
- Department of Neurosciences, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan 16150, Malaysia
| | - Siti Zulaikha Nashwa Mohd Khair
- Department of Neurosciences, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan 16150, Malaysia
| | - Farizan Ahmad
- Department of Neurosciences, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan 16150, Malaysia
| | - Azim Patar
- Department of Neurosciences, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan 16150, Malaysia
| | - Zamzuri Idris
- Department of Neurosciences, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan 16150, Malaysia
| | - Abdul Aziz Mohamed Yusoff
- Department of Neurosciences, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan 16150, Malaysia
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7
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Giaccherini M, Gentiluomo M, Fornili M, Lucenteforte E, Baglietto L, Campa D. Association between telomere length and mitochondrial copy number and cancer risk in humans: A meta-analysis on more than 300,000 individuals. Crit Rev Oncol Hematol 2021; 167:103510. [PMID: 34695574 DOI: 10.1016/j.critrevonc.2021.103510] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 10/13/2021] [Accepted: 10/14/2021] [Indexed: 12/17/2022] Open
Abstract
In the last decades the association of leukocyte telomere length (LTL) and mitochondrial copy number (mtDNAcn) with cancer risk has been the focus of many reports, however the relation is not yet completely understood. A meta-analysis of 112 studies including 64,184 cancer cases and 278,641 controls that analysed LTL and mtDNAcn in relation to cancer risk has been conducted to further our understanding of the topic. Stratified analyses for tumor type were also performed. Overall, no association was observed for all cancer combined neither for LTL nor mtDNAcn. Significant associations were detected for these biomarkers and specific cancer type; however, a large degree of heterogeneity was present, even within the same tumor type. Alternatives approaches based on polymorphic variants, such as polygenic risk scores and mendelian randomization, could be adopted to unravel the causal correlation of telomere length and mitochondrial copy number with cancer risk.
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Affiliation(s)
| | | | - Marco Fornili
- Department of Clinical and Experimental Medicine, University of Pisa, 56126, Pisa, Italy.
| | - Ersilia Lucenteforte
- Department of Clinical and Experimental Medicine, University of Pisa, 56126, Pisa, Italy.
| | - Laura Baglietto
- Department of Clinical and Experimental Medicine, University of Pisa, 56126, Pisa, Italy.
| | - Daniele Campa
- Department of Biology, University of Pisa, 56126, Pisa, Italy.
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Alikhani M, Saberi S, Esmaeili M, Michel V, Tashakoripour M, Abdirad A, Aghakhani A, Eybpoosh S, Vosough M, Mohagheghi MA, Eshagh Hosseini M, Touati E, Mohammadi M. Mitochondrial DNA Copy Number Variations and Serum Pepsinogen Levels for Risk Assessment in Gastric Cancer. IRANIAN BIOMEDICAL JOURNAL 2021; 25:323-33. [PMID: 34425651 PMCID: PMC8487685 DOI: 10.52547/ibj.25.5.323] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 03/13/2021] [Indexed: 01/14/2023]
Abstract
Background Variations in mitochondrial DNA copy number (mtDNA-CN) of peripheral blood leukocytes (PBLs), as a potential biomarker for gastric cancer (GC) screening has currently been subject to controversy. Herein, we have assessed its efficiency in GC screening, in parallel and in combination with serum pepsinogen (sPG) I/II ratio, as an established indicator of gastric atrophy. Methods The study population included GC (n = 53) and non-GC (n = 207) dyspeptic patients. The non-GC group was histologically categorized into CG (n = 104) and NM (n = 103) subgroups. The MtDNA-CN of PBLs was measured by quantitative real-time PCR. The sPG I and II levels and anti-H. pylori serum IgG were measured by ELISA. Results The mtDNA-CN was found significantly higher in GC vs. non-GC (OR = 3.0; 95% CI = 1.4, 6.4) subjects. Conversely, GC patients had significantly lower sPG I/II ratio than the non-GC (OR = 3.2; CI = 1.4, 7.2) subjects. The combination of these two biomarkers yielded a dramatic amplification of the odds of GC risk in double-positive (high mtDNA-CN-low sPGI/II) subjects, in reference to double-negatives (low mtDNA-CN-high sPGI/II), when assessed against non-GC (OR = 27.1; CI = 5.0, 147.3), CG (OR = 13.1; CI = 2.4, 72.6), or NM (OR = 49.5; CI = 7.9, 311.6) groups. Conclusion The combination of these two biomarkers, namely mtDNA-CN in PBLs and serum PG I/II ratio, drastically enhanced the efficiency of GC risk assessment, which calls for further validations.
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Affiliation(s)
- Mehdi Alikhani
- HPGC Research Group, Medical Biotechnology Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
| | - Samaneh Saberi
- HPGC Research Group, Medical Biotechnology Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
| | - Maryam Esmaeili
- HPGC Research Group, Medical Biotechnology Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
| | - Valérie Michel
- Institut Pasteur, Unit of Helicobacter Pathogenesis, CNRS UMR2001, 25-28 Rue du Dr Roux, 75724 Paris Cedex 15, France
| | - Mohammad Tashakoripour
- Gastroenterology Department, Amiralam Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Afshin Abdirad
- Cancer Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Arezoo Aghakhani
- Clinical Research Dept., Pasteur Institute of Iran, Tehran, Iran
| | - Sana Eybpoosh
- Department of Epidemiology and Biostatistics, Research Centre for Emerging and Reemerging Infectious Diseases, Pasteur Institute of Iran, Tehran, Iran
| | - Massoud Vosough
- Department of Regenerative Medicine, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | | | - Mahmoud Eshagh Hosseini
- Gastroenterology Department, Amiralam Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Eliette Touati
- Institut Pasteur, Unit of Helicobacter Pathogenesis, CNRS UMR2001, 25-28 Rue du Dr Roux, 75724 Paris Cedex 15, France
| | - Marjan Mohammadi
- HPGC Research Group, Medical Biotechnology Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
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9
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Alikhani M, Touati E, Karimipoor M, Vosough M, Eybpoosh S, Mohammadi M. Dynamic Changes of Mitochondrial DNA Copy Number in Gastrointestinal Tract Cancers: A Systematic Review and Meta-Analysis. Cancer Invest 2021; 39:163-179. [PMID: 33290105 DOI: 10.1080/07357907.2020.1857394] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
We have performed a systematic review and meta-analysis for evaluation of mitochondrial DNA copy number (mtDNA-CN) alterations in peripheral blood leukocytes (PBL), and tumor tissues of gastrointestinal tract (GIT) cancers. Analysis of the PBL demonstrated a significant decrease [OR: 0.6 (0.5, 0.8)] and increase [OR: 1.4 (1.1, 1.9)] prior to and following GIT cancer development, respectively. This trend was more evident in CRC, and GC subgroups. Analysis of tissue yielded high levels of heterogeneity. However, the mean difference for the CRC subgroup was statistically significant [1.5 (1.0, 2.2)]. Our analysis suggests mtDNA-CN deserves further investigations as a GIT-cancer screening tool.
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Affiliation(s)
- Mehdi Alikhani
- HPGC Research Group, Medical Biotechnology Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
| | - Eliette Touati
- Institut Pasteur, Unit of Helicobacter Pathogenesis, CNRS UMR2001, Paris Cedex 15, France
| | - Morteza Karimipoor
- Molecular Medicine Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
| | - Massoud Vosough
- Department of Regenerative Medicine, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Sana Eybpoosh
- Department of Epidemiology and Biostatistics, Research Centre for Emerging and Reemerging Infectious Diseases, Pasteur Institute of Iran, Tehran, Iran
| | - Marjan Mohammadi
- HPGC Research Group, Medical Biotechnology Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
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10
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Thakur N, Sharma AK, Singh H, Singh S. Role of Mitochondrial DNA (mtDNA) Variations in Cancer Development: A Systematic Review. Cancer Invest 2020; 38:375-393. [PMID: 32673136 DOI: 10.1080/07357907.2020.1797768] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
mtDNA is the closed circular, ds-DNA present in mitochondria of eukaryotic cells and are inherited maternally. Besides being the power house of the cell, mitochondria are also responsible for the regulation of redox homeostasis, signaling, metabolism, immunity, survival and apoptosis. Lack of a 'Systematic Review' on mtDNA variations and cancers encouraged us to perform the present study. Pubmed', 'Embase' and 'Cochrane Library' databases were searched using keywords 'Mitochondrial DNA' OR 'mtDNA' OR 'mDNA' AND 'polymorphism' AND 'cancer' AND 'risk' to retrieve literature. Polymorphisms occupy first rank among mtDNA variations followed by CNV, MSI, mutations and hold a great potential to emerge as key predictors for human cancers.
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Affiliation(s)
- Nisha Thakur
- Division of Molecular Diagnostics, Indian Council of Medical Research (ICMR)-National Institute of Cancer Prevention and Research (NICPR), Ministry of Health & Family Welfare (Govt. of India), Noida, India
| | - Amitesh Kumar Sharma
- Division of Informatics, Systems Research and Management, Indian Council of Medical Research (ICMR), Ministry of Health & Family Welfare (Govt. of India), New Delhi, India
| | - Harpreet Singh
- Division of Informatics, Systems Research and Management, Indian Council of Medical Research (ICMR), Ministry of Health & Family Welfare (Govt. of India), New Delhi, India
| | - Shalini Singh
- Indian Council of Medical Research (ICMR)-National Institute of Cancer Prevention and Research (NICPR), Ministry of Health & Family Welfare (Govt. of India), Noida, India
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Rodrigues-Antunes S, Borges BN. Alterations in mtDNA, gastric carcinogenesis and early diagnosis. Mitochondrial DNA A DNA Mapp Seq Anal 2018; 30:226-233. [DOI: 10.1080/24701394.2018.1475478] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- S. Rodrigues-Antunes
- Laboratório de Biologia Molecular “Francisco Mauro Salzano”, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Brazil
| | - B. N. Borges
- Laboratório de Biologia Molecular “Francisco Mauro Salzano”, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Brazil
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12
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Kumar B, Bhat ZI, Bansal S, Saini S, Naseem A, Wahabi K, Burman A, Kumar GT, Saluja SS, Rizvi MMA. Association of mitochondrial copy number variation and T16189C polymorphism with colorectal cancer in North Indian population. Tumour Biol 2017; 39:1010428317740296. [PMID: 29182103 DOI: 10.1177/1010428317740296] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Globally, colorectal cancer is the third most common type of cancer. Genetic instability leading to cancer development is one of the major causes for development of cancer. Alterations in mitochondrial genome, that is, mutations, single-nucleotide polymorphisms, and copy number variations are known to contribute in cancer development. The aim of our study was to investigate association of mitochondrial T16189C polymorphism and copy number variation with colorectal cancer in North Indian population. DNA isolated from peripheral blood of 126 colorectal cancer patients and 114 healthy North Indian subjects was analyzed for T16189C polymorphism and half of them for mitochondrial copy number variation. Genotyping was done using polymerase chain reaction-restriction fragment length polymorphism, and copy number variation was estimated using real-time polymerase chain reaction, numbers of mitochondrial copies and found to be significantly higher in colorectal cancer patients than healthy controls (88 (58-154), p = 0.001). In the regression analysis, increased mitochondrial copy number variation was associated with risk of colorectal cancer (odds ratio = 2.885, 95% confidence interval = 1.3-6.358). However, T16189C polymorphism was found to be significantly associated with the risk of rectal cancer (odds ratio = 5.213, p = 0.001) and non-significantly with colon cancer (odds ratio = 0.867, p = 0.791). Also, false-positive report probability analysis was done to validate the significant findings. Our results here indicate that mitochondrial copy number variation may be playing an important role in the development of colorectal cancer, and detection of mitochondrial copy number variation can be used as a biomarker for predicting the risk of colorectal cancer in North Indian subjects.
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Affiliation(s)
- Bhupender Kumar
- 1 Department of Biochemistry, Institute of Home Economics, University of Delhi, New Delhi, India
| | - Zafar Iqbal Bhat
- 2 Genome Biology Laboratory, Department of Biosciences, Jamia Millia Islamia, New Delhi, India
| | - Savita Bansal
- 1 Department of Biochemistry, Institute of Home Economics, University of Delhi, New Delhi, India
| | - Sunil Saini
- 3 School of Life Sciences, Jawaharlal Nehru University, New Delhi, India
| | - Afreen Naseem
- 2 Genome Biology Laboratory, Department of Biosciences, Jamia Millia Islamia, New Delhi, India
| | - Khushnuma Wahabi
- 2 Genome Biology Laboratory, Department of Biosciences, Jamia Millia Islamia, New Delhi, India
| | - Archana Burman
- 1 Department of Biochemistry, Institute of Home Economics, University of Delhi, New Delhi, India
| | - Geeta Trilok Kumar
- 1 Department of Biochemistry, Institute of Home Economics, University of Delhi, New Delhi, India
| | - Sundeep Singh Saluja
- 4 Department of Gastrointestinal Surgery, Govind Ballabh Pant Hospital and Maulana Azad Medical College, New Delhi, India
| | - M Moshahid Alam Rizvi
- 2 Genome Biology Laboratory, Department of Biosciences, Jamia Millia Islamia, New Delhi, India
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13
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Li H, Tian Z, Zhang Y, Yang Q, Shi B, Hou P, Ji M. Increased copy number of mitochondrial DNA predicts poor prognosis of esophageal squamous cell carcinoma. Oncol Lett 2017; 15:1014-1020. [PMID: 29422970 PMCID: PMC5772934 DOI: 10.3892/ol.2017.7416] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Accepted: 09/22/2017] [Indexed: 01/10/2023] Open
Abstract
Change in mitochondrial DNA (mtDNA) copy number has been reported in esophageal squamous cell carcinoma (ESCC). However, its prognostic implication in ESCC remains largely unknown. Using reverse transcription-quantitative PCR assay, the mtDNA copy number was assessed in a cohort of patients with ESCC (n=141) and normal esophageal tissues (n=45), and the association between variable mtDNA levels and clinical outcomes of patients with ESCC were studied. Data revealed that ESCC patients exhibited an increased mtDNA content compared to control subjects. Furthermore, increased mtDNA content was associated with a significantly increased risk of cancer-associated mortality. This molecular event was associated with poorer survival in patients with ESCC, and was an independent predictor of patient survival. Data demonstrated that increased mtDNA content is a common genetic event in ESCC and may be a predictive factor of poor prognosis for ESCC patients.
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Affiliation(s)
- Heng Li
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China.,Department of Endocrinology, Xi'an Central Hospital, Xi'an, Shaanxi 710003, P.R. China
| | - Zhufang Tian
- Department of Endocrinology, Xi'an Central Hospital, Xi'an, Shaanxi 710003, P.R. China
| | - Yong Zhang
- Department of Thoracic Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Qi Yang
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Bingyin Shi
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Peng Hou
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Meiju Ji
- Center for Translational Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
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14
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Zhu X, Mao Y, Huang T, Yan C, Yu F, Du J, Dai J, Ma H, Jin G. High mitochondrial DNA copy number was associated with an increased gastric cancer risk in a Chinese population. Mol Carcinog 2017; 56:2593-2600. [DOI: 10.1002/mc.22703] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Revised: 06/06/2017] [Accepted: 07/07/2017] [Indexed: 01/28/2023]
Affiliation(s)
- Xun Zhu
- Department of Epidemiology and Biostatistics; School of Public Health; Nanjing Medical University; Nanjing China
- Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment; Collaborative Innovation Center for Cancer Medicine, Nanjing Medical University; Nanjing China
- Wuxi Center for Disease Control and Prevention; Wuxi China
| | - Yingying Mao
- Department of Epidemiology and Biostatistics; School of Public Health; Nanjing Medical University; Nanjing China
- Department of Epidemiology and Biostatistics; School of Basic Medical Sciences; Zhejiang Chinese Medical University; Hangzhou China
| | - Tongtong Huang
- Department of Epidemiology and Biostatistics; School of Public Health; Nanjing Medical University; Nanjing China
| | - Caiwang Yan
- Department of Epidemiology and Biostatistics; School of Public Health; Nanjing Medical University; Nanjing China
| | - Fei Yu
- Department of Epidemiology and Biostatistics; School of Public Health; Nanjing Medical University; Nanjing China
| | - Jiangbo Du
- Department of Epidemiology and Biostatistics; School of Public Health; Nanjing Medical University; Nanjing China
| | - Juncheng Dai
- Department of Epidemiology and Biostatistics; School of Public Health; Nanjing Medical University; Nanjing China
| | - Hongxia Ma
- Department of Epidemiology and Biostatistics; School of Public Health; Nanjing Medical University; Nanjing China
| | - Guangfu Jin
- Department of Epidemiology and Biostatistics; School of Public Health; Nanjing Medical University; Nanjing China
- Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment; Collaborative Innovation Center for Cancer Medicine, Nanjing Medical University; Nanjing China
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15
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To study the relationship between cadmium, zinc and mtDNA copy number in North Indian patients suffering from prostate cancer: A case control study. AFRICAN JOURNAL OF UROLOGY 2017. [DOI: 10.1016/j.afju.2016.05.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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16
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Jung SJ, Cho JH, Park WJ, Heo YR, Lee JH. Telomere length is correlated with mitochondrial DNA copy number in intestinal, but not diffuse, gastric cancer. Oncol Lett 2017; 14:925-929. [PMID: 28693253 DOI: 10.3892/ol.2017.6197] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 03/03/2017] [Indexed: 01/07/2023] Open
Abstract
A positive correlation between telomere length and mitochondrial DNA (mtDNA) copy number has previously been observed in healthy individuals, and in patients with psychiatric disorders. In the present study, telomere length and mtDNA copy number were evaluated in gastric cancer (GC) tissue samples. DNA was extracted from 109 GC samples (including 82 intestinal, and 27 diffuse cases), and the telomere length and mtDNA copy number were analyzed using a quantitative-polymerase chain reaction assay. The relative telomere length and mtDNA copy number in tumor tissue, as compared with in normal tissue, (mean ± standard deviation) in all GC samples were 11.48±1.14 and 14.86±1.35, respectively. Telomere length and mtDNA copy number were not identified as exhibiting clinical or prognostic value for GC. However, positive correlations between telomere length and mitochondrial DNA copy number were identified in GC (r=0.408, P<0.001) and in the adjacent normal mucosa (r=0.363; P<0.001). When stratified by Lauren classification, the correlation was identified in intestinal type GC samples (r=0.461; P<0.001), but not in diffuse type GC samples (r=0.225; P=0.260). This result indicated that loss of the correlation of telomeres and mitochondrial function may induce the initiation or progression of GC pathogenesis.
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Affiliation(s)
- Soo-Jung Jung
- Department of Anatomy, School of Medicine, Keimyung University, Daegu, Republic of Korea
| | - Ji-Hyoung Cho
- Department of General Surgery, School of Medicine, Keimyung University, Daegu, Republic of Korea
| | - Won-Jin Park
- Department of Anatomy, School of Medicine, Keimyung University, Daegu, Republic of Korea
| | - Yu-Ran Heo
- Department of Anatomy, School of Medicine, Keimyung University, Daegu, Republic of Korea
| | - Jae-Ho Lee
- Department of Anatomy, School of Medicine, Keimyung University, Daegu, Republic of Korea
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17
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Loss of the Association between Telomere Length and Mitochondrial DNA Copy Number Contribute to Colorectal Carcinogenesis. Pathol Oncol Res 2017; 24:323-328. [DOI: 10.1007/s12253-017-0245-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Accepted: 04/27/2017] [Indexed: 10/19/2022]
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18
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Hu L, Yao X, Shen Y. Altered mitochondrial DNA copy number contributes to human cancer risk: evidence from an updated meta-analysis. Sci Rep 2016; 6:35859. [PMID: 27775013 PMCID: PMC5075889 DOI: 10.1038/srep35859] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2016] [Accepted: 10/06/2016] [Indexed: 12/31/2022] Open
Abstract
Accumulating epidemiological evidence indicates that the quantitative changes in human mitochondrial DNA (mtDNA) copy number could affect the genetic susceptibility of malignancies in a tumor-specific manner, but the results are still elusive. To provide a more precise estimation on the association between mtDNA copy number and risk of diverse malignancies, a meta-analysis was conducted by calculating the pooled odds ratios (OR) and the 95% confidence intervals (95% CI). A total of 36 case-control studies involving 11,847 cases and 15,438 controls were finally included in the meta-analysis. Overall analysis of all studies suggested no significant association between mtDNA content and cancer risk (OR = 1.044, 95% CI = 0.866–1.260, P = 0.651). Subgroup analyses by cancer types showed an obvious positive association between mtDNA content and lymphoma and breast cancer (OR = 1.645, 95% CI = 1.117–2.421, P = 0.012; OR = 1.721, 95% CI = 1.130–2.622, P = 0.011, respectively), and a negative association for hepatic carcinoma. Stratified analyses by other confounding factors also found increased cancer risk in people with drinking addiction. Further analysis using studies of quartiles found that populations with the highest mtDNA content may be under more obvious risk of melanoma and that Western populations were more susceptible than Asians.
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Affiliation(s)
- Liwen Hu
- Department of Cardiothoracic Surgery, Jinling Hospital, School of Clinical Medicine, Nanjing University, Nanjing, Jiangsu Province, P. R. China
| | - Xinyue Yao
- Institute of Laboratory Medicine, Jinling Hospital, School of Clinical Medicine, Nanjing University, Nanjing, Jiangsu Province, P. R. China
| | - Yi Shen
- Department of Cardiothoracic Surgery, Jinling Hospital, School of Clinical Medicine, Nanjing University, Nanjing, Jiangsu Province, P. R. China
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19
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Wan QS, Zhang KH. Noninvasive detection of gastric cancer. Tumour Biol 2016; 37:11633-11643. [PMID: 27381515 DOI: 10.1007/s13277-016-5129-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 06/29/2016] [Indexed: 12/11/2022] Open
Abstract
Gastric cancer (GC) is the fifth most common cancer and the third common cause of cancer death worldwide. Endoscopy is the most effective method for GC screening, but its application is limited by the invasion. Therefore, continuous efforts have been made to develop noninvasive methods for GC detection and promising results have been reported. Here, we review the advances in GC detection by protein and nucleic acid tumor markers, circulating tumor cells, and tumor-associated autoantibodies in peripheral blood. Some potential new noninvasive methods for GC detection are also reviewed, including exhaled breath analysis, blood spectroscopy analysis and molecular imaging.
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Affiliation(s)
- Qin-Si Wan
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Jiangxi Institute of Gastroenterology and Hepatology, 17 Yongwai Zheng Street, Nanchang, Jiangxi, 330006, China
| | - Kun-He Zhang
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Jiangxi Institute of Gastroenterology and Hepatology, 17 Yongwai Zheng Street, Nanchang, Jiangxi, 330006, China.
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20
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Cell-free circulating mitochondrial DNA content and risk of hepatocellular carcinoma in patients with chronic HBV infection. Sci Rep 2016; 6:23992. [PMID: 27063412 PMCID: PMC4827061 DOI: 10.1038/srep23992] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Accepted: 03/18/2016] [Indexed: 12/18/2022] Open
Abstract
Recent studies have demonstrated a potential link between circulating cell-free mitochondrial DNA (mtDNA) content and cancers. However, there is no study evaluating the association between circulating mtDNA as a non-invasive marker of hepatocellular carcinoma (HCC) risk. We conducted a nested case-control study to determine circulating mtDNA content in serum samples from 116 HBV-related HCC cases and 232 frequency-matched cancer-free HBV controls, and evaluate the retrospective association between mtDNA content and HCC risk using logistic regression and their temporal relationship using a mixed effects model. HCC cases had significantly lower circulating mtDNA content than controls (1.06 versus 2.47, P = 1.7 × 10(-5)). Compared to HBV patients with higher mtDNA content, those with lower mtDNA content had a significantly increased risk of HCC with an odds ratio (OR) of 2.19 (95% confidence interval [CI] 1.28-3.72, P = 0.004). Quartile analyses revealed a significant dose-dependent effect (Ptrend = 0.001) for this association. In a pilot longitudinal sub-cohort of 14 matched cases-control pairs, we observed a trend of dramatically decreased mtDNA content in cases and slightly decreased mtDNA content in controls, with a significant interaction of case-control status with time (Pinteraction = 0.049). Our findings suggest that circulating mtDNA is a potential novel non-invasive biomarker of HCC risk in HBV patients.
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21
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Thyagarajan B, Guan W, Fedirko V, Barcelo H, Tu H, Gross M, Goodman M, Bostick RM. No association between mitochondrial DNA copy number and colorectal adenomas. Mol Carcinog 2015; 55:1290-6. [PMID: 26258394 DOI: 10.1002/mc.22370] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 05/20/2015] [Accepted: 07/06/2015] [Indexed: 01/01/2023]
Abstract
Despite previously reported associations between peripheral blood mtDNA copy number and colorectal cancer, it remains unclear whether altered mtDNA copy number in peripheral blood is a risk factor for colorectal cancer or a biomarker for undiagnosed colorectal cancer. Though colorectal adenomas are well-recognized precursor lesions to colorectal cancer, no study has evaluated an association between mtDNA copy number and colorectal adenoma risk. Hence, we investigated an association between peripheral blood mtDNA copy number and incident, sporadic colorectal adenoma in 412 colorectal adenoma cases and 526 cancer-free controls pooled from three colonoscopy-based case-control studies that used identical methods for case ascertainment, risk factor determination, and biospecimen collection. We also evaluated associations between relative mtDNA copy number and markers of oxidative stress, including circulating F2 -isoprostanes, carotenoids, and fluorescent oxidation products. We measured mtDNA copy number using a quantitative real time polymerase chain reaction (PCR). We used unconditional logistic regression to analyze the association between mtDNA copy number and colorectal adenoma risk after multivariable adjustment. We found no association between logarithmically transformed relative mtDNA copy number, analyzed as a continuous variable, and colorectal adenoma risk (odds ratio = 1.02, 95%CI: 0.82-1.27; P = 0.86). There were no statistically significant associations between relative mtDNA copy number and other markers of oxidative stress. Our findings, taken together with those from previous studies, suggest that relative mtDNA copy number in peripheral blood may more likely be a marker of early colorectal cancer than of risk for the disease or of in vivo oxidative stress. © 2015 Wiley Periodicals, Inc.
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Affiliation(s)
- Bharat Thyagarajan
- Department of Laboratory Medicine Pathology, Medical School University of Minnesota, Minneapolis, Minnesota
| | - Weihua Guan
- Department of Biostatistics, School of Public Health, University of Minnesota, Minneapolis, Minnesota
| | - Veronika Fedirko
- Department of Epidemiology, Rollins School of Public Health, Winship Cancer Institute, Emory University, Atlanta, Georgia
| | - Helene Barcelo
- Department of Laboratory Medicine Pathology, Medical School University of Minnesota, Minneapolis, Minnesota
| | - Huakang Tu
- Department of Epidemiology, Rollins School of Public Health, Winship Cancer Institute, Emory University, Atlanta, Georgia
| | - Myron Gross
- Department of Laboratory Medicine Pathology, Medical School University of Minnesota, Minneapolis, Minnesota
| | - Michael Goodman
- Department of Epidemiology, Rollins School of Public Health, Winship Cancer Institute, Emory University, Atlanta, Georgia
| | - Roberd M Bostick
- Department of Epidemiology, Rollins School of Public Health, Winship Cancer Institute, Emory University, Atlanta, Georgia
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22
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Mitochondrial DNA copy number in peripheral blood and melanoma risk. PLoS One 2015; 10:e0131649. [PMID: 26110424 PMCID: PMC4482392 DOI: 10.1371/journal.pone.0131649] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Accepted: 06/05/2015] [Indexed: 02/07/2023] Open
Abstract
Mitochondrial DNA (mtDNA) copy number in peripheral blood has been suggested as risk modifier in various types of cancer. However, its influence on melanoma risk is unclear. We evaluated the association between mtDNA copy number in peripheral blood and melanoma risk in 500 melanoma cases and 500 healthy controls from an ongoing melanoma study. The mtDNA copy number was measured using real-time polymerase chain reaction. Overall, mean mtDNA copy number was significantly higher in cases than in controls (1.15 vs 0.99, P<0.001). Increased mtDNA copy number was associated with a 1.45-fold increased risk of melanoma (95% confidence interval: 1.12-1.97). Significant joint effects between mtDNA copy number and variables related to pigmentation and history of sunlight exposure were observed. This study supports an association between increased mtDNA copy number and melanoma risk that is independent on the known melanoma risk factors (pigmentation and history of sunlight exposure).
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23
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Gastric cancer and gene copy number variation: emerging cancer drivers for targeted therapy. Oncogene 2015; 35:1475-82. [PMID: 26073079 DOI: 10.1038/onc.2015.209] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Revised: 05/12/2015] [Accepted: 05/13/2015] [Indexed: 12/15/2022]
Abstract
Gastric cancer (GC) is among the most common malignancy in the world with poor prognosis and limited treatment options. It has been established that gastric carcinogenesis is caused by a complex interaction between host and environmental factors. Copy number variation (CNV) refers to a form of genomic structural variation that results in abnormal gene copy numbers, including gene amplification, gain, loss and deletion. DNA CNV is an important influential factor for the expression of both protein-coding and non-coding genes, affecting the activity of various signaling pathways. CNV arises as a result of preferential selection that favors cancer development, and thus, targeting the amplified 'driver genes' in GC may provide novel opportunities for personalized therapy. The detection of CNVs in chromosomal or mitochondrial DNA from tissue or blood samples may assist the diagnosis, prognosis and targeted therapy of GC. In this review, we discuss the recent CNV discoveries that shed light on the molecular pathogenesis of GC, with a specific emphasis on CNVs that display diagnostic, prognostic or therapeutic significances in GC.
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Williams SB, Ye Y, Huang M, Chang DW, Kamat AM, Pu X, Dinney CP, Wu X. Mitochondrial DNA Content as Risk Factor for Bladder Cancer and Its Association with Mitochondrial DNA Polymorphisms. Cancer Prev Res (Phila) 2015; 8:607-13. [PMID: 25896234 DOI: 10.1158/1940-6207.capr-14-0414] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Accepted: 04/01/2015] [Indexed: 01/05/2023]
Abstract
Mitochondrial DNA (mtDNA) content has been shown to be associated with cancer susceptibility. We identified 926 bladder cancer patients and compared these with 926 healthy controls frequency matched on age, gender, and ethnicity. Patients diagnosed with bladder cancer had significantly decreased mtDNA content when compared with control subjects (median, 0.98 vs. 1.04, P < 0.001). Low mtDNA content (i.e., less than the median in control subjects) was associated with a statistically significant increased risk of bladder cancer, when compared with high mtDNA content [Odds ratio (OR), 1.37; 95% confidence interval (CI), 1.13-1.66; P < 0.001). In a trend analysis, a statistically significant dose-response relationship was detected between lower mtDNA content and increasing risk of bladder cancer (Ptrend <0.001). When stratified by host characteristics, advanced age (>65 years), male sex and positive smoking history were significantly associated with low mtDNA content and increased risk of bladder cancer. We identified two unique mtDNA polymorphisms significantly associated with risk of bladder cancer: mitot10464c (OR, 1.39; 95% CI, 1.00-1.93; P = 0.048) and mitoa4918g (OR, 1.40; 95% CI, 1.00-1.95; P = 0.049). Analysis of the joint effect of low mtDNA content and unfavorable mtDNA polymorphisms revealed a 2.5-fold increased risk of bladder cancer (OR, 2.50; 95% CI, 1.60-3.94; P < 0.001). Significant interaction was observed between mitoa4918g and mtDNA content (Pinteraction = 0.028). Low mtDNA content was associated with increased risk of bladder cancer and we identified new susceptibility mtDNA alleles associated with increased risk that require further investigation into the biologic underpinnings of bladder carcinogenesis.
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Affiliation(s)
- Stephen B Williams
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, Texas. Department of Urology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Yuanqing Ye
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Maosheng Huang
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - David W Chang
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Ashish M Kamat
- Department of Urology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Xia Pu
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Colin P Dinney
- Department of Urology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Xifeng Wu
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, Texas.
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25
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Jiang J, Zhao JH, Wang XL, DI JI, Liu ZB, Li GY, Wang MZ, Li Y, Chen R, Ge RL. Analysis of mitochondrial DNA in Tibetan gastric cancer patients at high altitude. Mol Clin Oncol 2015; 3:875-879. [PMID: 26171199 DOI: 10.3892/mco.2015.539] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Accepted: 10/07/2014] [Indexed: 12/20/2022] Open
Abstract
The highest risk areas of gastric cancer are currently Japan, Korea and China; Qinghai, a high-altitude area, has one of the highest gastric cancer rates in China. The incidence of gastric cancer is higher in the Tibetan ethnic group compared to that in the Han ethnic group in Qinghai. This study was conducted to determine the clinical characteristics of mitochondrial DNA (mtDNA) mutations and copy numbers among Tibetans with gastric cancer residing at high altitudes and investigate the association between adaptations to hypoxic conditions and oncogenesis. A total of 23 Tibetan gastric cancer patients and 40 matched controls were recruited in this study. Leukocyte mtDNA genes and copy numbers were analyzed. The haplogroups were classified based on mitochondrial gene sequences. A total of 56.5% of the study participants had used alcohol at some point in their lives and 73.9% were positive for Helicobacter pylori (H. pylori). Eight mutations in 8 mitochondrial genes were identified in 43.4% of the Tibetan cancer patient group. There were no significant differences in leukocyte mtDNA copy number levels based on smoking status, alchohol consumption, obesity or H. pylori infection between the control and cancer groups. Statistical differences were also not found between gastric cancer patients with and those without mtDNA mutations. The majority of Tibetan patients with gastric cancer belonged to the mitochondrial haplogroup M9. In conclusion, Tibetans with gastric cancer residing at high altitudes exhibited a wide spectrum of mtDNA mutations. However, leukocyte mtDNA copy numbers in stage II gastric cancer were not statistically different compared to those in healthy Tibetans.
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Affiliation(s)
- Jun Jiang
- Research Center for High Altitude Medicine, Qinghai University, Xining, Qinghai 810001, P.R. China ; Department of Oncology, Affiliated Hospital of Qinghai University, Xining, Qinghai 810001, P.R. China
| | - Jun-Hui Zhao
- Department of Oncology, Affiliated Hospital of Qinghai University, Xining, Qinghai 810001, P.R. China
| | - Xue-Lian Wang
- Department of Surgery, Affiliated Hospital of Qinghai University, Xining, Qinghai 810001, P.R. China
| | - J I DI
- Department of Oncology, Affiliated Hospital of Qinghai University, Xining, Qinghai 810001, P.R. China
| | - Zhi-Bo Liu
- Department of Oncology, Affiliated Hospital of Qinghai University, Xining, Qinghai 810001, P.R. China
| | - Guo-Yuan Li
- Department of Oncology, Affiliated Hospital of Qinghai University, Xining, Qinghai 810001, P.R. China
| | - Miao-Zhou Wang
- Department of Oncology, Affiliated Hospital of Qinghai University, Xining, Qinghai 810001, P.R. China
| | - Yan Li
- Department of Oncology, Affiliated Hospital of Qinghai University, Xining, Qinghai 810001, P.R. China
| | - Rong Chen
- Department of Oncology, Affiliated Hospital of Qinghai University, Xining, Qinghai 810001, P.R. China
| | - Ri-Li Ge
- Research Center for High Altitude Medicine, Qinghai University, Xining, Qinghai 810001, P.R. China
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Mitochondria in health, aging and diseases: the epigenetic perspective. Biogerontology 2015; 16:569-85. [DOI: 10.1007/s10522-015-9562-3] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2014] [Accepted: 02/19/2015] [Indexed: 01/15/2023]
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Lee H, Lee JH, Kim DC, Hwang I, Kang YN, Gwon GJ, Choi IJ, Kim S. Is Mitochondrial DNA Copy Number Associated with Clinical Characteristics and Prognosis in Gastric Cancer? Asian Pac J Cancer Prev 2015; 16:87-90. [DOI: 10.7314/apjcp.2015.16.1.87] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Huang B, Gao YT, Shu XO, Wen W, Yang G, Li G, Courtney R, Ji BT, Li HL, Purdue MP, Zheng W, Cai Q. Association of leukocyte mitochondrial DNA copy number with colorectal cancer risk: Results from the Shanghai Women's Health Study. Cancer Epidemiol Biomarkers Prev 2014; 23:2357-65. [PMID: 25139937 PMCID: PMC4221544 DOI: 10.1158/1055-9965.epi-14-0297] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Mitochondria play an important role in cellular energy metabolism, free radical production, and apoptosis, and thus may be involved in cancer development. METHODS We evaluated mitochondrial DNA (mtDNA) copy number in peripheral leukocytes in relation to colorectal cancer risk in a case-control study of 444 colorectal cancer cases and 1,423 controls nested in the Shanghai Women's Health Study, a population-based, prospective cohort study. Relative mtDNA copy number was determined by a quantitative real-time PCR assay using peripheral leukocyte DNA samples collected at the time of study enrollment, before cancer diagnosis. RESULTS We found that baseline mtDNA copy number was lower among women who subsequently developed colorectal cancer [geometric mean, 0.277; 95% confidence interval (CI), 0.269-0.285] than among women who remained cancer-free (geometric mean, 0.288; 95% CI, 0.284-0.293; P = 0.0153). Multivariate adjusted ORs were 1.26 (95% CI, 0.93-1.70) and 1.44 (95% CI, 1.06-1.94) for the middle and lower tertiles of mtDNA copy number, respectively, compared with the upper tertile (highest mtDNA copy number; Ptrend = 0.0204). The association varied little by the interval between blood collection and cancer diagnosis. CONCLUSIONS Our data suggest that mtDNA copy number measured in peripheral leukocytes may be a potential biomarker useful for colorectal cancer risk assessment. IMPACT If confirmed, mtDNA copy number measured in peripheral leukocytes may be a biomarker useful for colorectal cancer risk assessment.
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Affiliation(s)
- Bo Huang
- Division of Epidemiology and Vanderbilt Epidemiology Center, Department of Medicine, Vanderbilt University School of Medicine and Vanderbilt-Ingram Cancer Center, Nashville, Tennessee. School of Public Health, Guilin Medical University, Guilin, Guangxi, China
| | - Yu-Tang Gao
- Department of Epidemiology, Shanghai Cancer Institute, Shanghai, China
| | - Xiao-Ou Shu
- Division of Epidemiology and Vanderbilt Epidemiology Center, Department of Medicine, Vanderbilt University School of Medicine and Vanderbilt-Ingram Cancer Center, Nashville, Tennessee
| | - Wanqing Wen
- Division of Epidemiology and Vanderbilt Epidemiology Center, Department of Medicine, Vanderbilt University School of Medicine and Vanderbilt-Ingram Cancer Center, Nashville, Tennessee
| | - Gong Yang
- Division of Epidemiology and Vanderbilt Epidemiology Center, Department of Medicine, Vanderbilt University School of Medicine and Vanderbilt-Ingram Cancer Center, Nashville, Tennessee
| | - Guoliang Li
- Division of Epidemiology and Vanderbilt Epidemiology Center, Department of Medicine, Vanderbilt University School of Medicine and Vanderbilt-Ingram Cancer Center, Nashville, Tennessee
| | - Regina Courtney
- Division of Epidemiology and Vanderbilt Epidemiology Center, Department of Medicine, Vanderbilt University School of Medicine and Vanderbilt-Ingram Cancer Center, Nashville, Tennessee
| | - Bu-Tian Ji
- Division of Cancer Epidemiology and Genetics, Department of Health and Human Services, National Cancer Institute, NIH, Bethesda, Maryland
| | - Hong-Lan Li
- Department of Epidemiology, Shanghai Cancer Institute, Shanghai, China
| | - Mark P Purdue
- Division of Cancer Epidemiology and Genetics, Department of Health and Human Services, National Cancer Institute, NIH, Bethesda, Maryland
| | - Wei Zheng
- Division of Epidemiology and Vanderbilt Epidemiology Center, Department of Medicine, Vanderbilt University School of Medicine and Vanderbilt-Ingram Cancer Center, Nashville, Tennessee
| | - Qiuyin Cai
- Division of Epidemiology and Vanderbilt Epidemiology Center, Department of Medicine, Vanderbilt University School of Medicine and Vanderbilt-Ingram Cancer Center, Nashville, Tennessee.
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Lee JH, Kim DK. Microsatellite Instability of Nuclear and Mitochondrial DNAs in Gastric Carcinogenesis. Asian Pac J Cancer Prev 2014. [DOI: 10.7314/apjcp.2014.15.19.8027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
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Kim C, Bassig BA, Seow WJ, Hu W, Purdue MP, Huang WY, Liu CS, Cheng WL, Männistö S, Vermeulen R, Weinstein SJ, Lim U, Hosgood HD, Bonner MR, Caporaso NE, Albanes D, Lan Q, Rothman N. Mitochondrial DNA copy number and chronic lymphocytic leukemia/small lymphocytic lymphoma risk in two prospective studies. Cancer Epidemiol Biomarkers Prev 2014; 24:148-53. [PMID: 25293880 DOI: 10.1158/1055-9965.epi-14-0753] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Mitochondrial DNA copy number (mtDNA CN) may be modified by mitochondria in response to oxidative stress. Previously, mtDNA CN was associated with non-Hodgkin lymphoma (NHL) risk, particularly chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL/SLL). We conducted a replication study in the Prostate, Lung, Colorectal, and Ovarian (PLCO) study and pooled with published ATBC (Alpha-Tocopherol, Beta-Carotene) data. METHODS In PLCO, 292 NHL cases (95 CLL/SLL cases) and 301 controls were pooled with 142 NHL cases (47 CLL/SLL cases) and 142 controls from ATBC. Subjects answered a questionnaire and provided blood. DNA was extracted from prediagnostic peripheral white blood, and mtDNA CN assayed by quantitative polymerase chain reaction. Unconditional logistic regression estimated mtDNA CN and NHL risk by odds ratios (OR) and 95% confidence intervals (95% CI). RESULTS Greater mtDNA CN was associated with increased risk of CLL/SLL among males in PLCO (3rd vs. 1st tertile: OR, 2.21; 95% CI, 1.03-4.72; Ptrend: 0.049) and pooled (T3 vs. T1: OR, 3.12; 95% CI, 1.72-5.68; Ptrend: 0.0002). Association was stronger among male smokers (Ptrend: <0.0001) and essentially identical for cases diagnosed <6, >6-8, and >8 years from blood draw (pooled: Pinteraction: 0.65). mtDNA CN and risk of other NHL subtypes and multiple myeloma showed no association. CONCLUSIONS AND IMPACT Mitochondrial DNA CN was associated with risk of CLL/SLL in males/male smokers. The risk was observed among cases diagnosed as long as 8 years after blood draw. These results suggest that higher mtDNA CN may reflect a process involved in CLL/SLL development.
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Affiliation(s)
- Christopher Kim
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland.
| | - Bryan A Bassig
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Wei Jie Seow
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Wei Hu
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Mark P Purdue
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Wen-Yi Huang
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Chin-San Liu
- Neurology and Vascular and Genomic Center, Changhua Christian Hospital, Changhua, Taiwan
| | - Wen-Ling Cheng
- Neurology and Vascular and Genomic Center, Changhua Christian Hospital, Changhua, Taiwan
| | - Satu Männistö
- Department of Chronic Disease Prevention, National Institute for Health and Welfare, Helsinki, Finland
| | - Roel Vermeulen
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands
| | - Stephanie J Weinstein
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Unhee Lim
- Epidemiology Program, University of Hawaii Cancer Center, Honolulu, Hawaii
| | - H Dean Hosgood
- Albert Einstein College of Medicine, Yeshiva University, Bronx, New York
| | - Matthew R Bonner
- Department of Epidemiology and Environmental Health, State University of New York at Buffalo, Buffalo, New York
| | - Neil E Caporaso
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Demetrius Albanes
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Qing Lan
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Nathaniel Rothman
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
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Peripheral blood mitochondrial DNA copy number is associated with prostate cancer risk and tumor burden. PLoS One 2014; 9:e109470. [PMID: 25279731 PMCID: PMC4184876 DOI: 10.1371/journal.pone.0109470] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Accepted: 08/22/2014] [Indexed: 02/05/2023] Open
Abstract
Alterations of mitochondrial DNA (mtDNA) have been associated with the risk of a number of human cancers; however, the relationship between mtDNA copy number in peripheral blood leukocytes (PBLs) and the risk of prostate cancer (PCa) has not been investigated. In a case-control study of 196 PCa patients and 196 age-paired healthy controls in a Chinese Han population, the association between mtDNA copy number in PBLs and PCa risk was evaluated. The relative mtDNA copy number was measured using quantitative real-time PCR; samples from three cases and two controls could not be assayed, leaving 193 cases and 194 controls for analysis. PCa patients had significantly higher mtDNA copy numbers than controls (medians 0.91 and 0.82, respectively; P<0.001). Dichotomized at the median value of mtDNA copy number in the controls, high mtDNA copy number was significantly associated with an increased risk of PCa (adjusted odds ratio = 1.85, 95% confidence interval: 1.21–2.83). A significant dose-response relationship was observed between mtDNA copy number and risk of PCa in quartile analysis (Ptrend = 0.011). Clinicopathological analysis showed that high mtDNA copy numbers in PCa patients were significantly associated with high Gleason score and advanced tumor stage, but not serum prostate-specific antigen level (P = 0.002, 0.012 and 0.544, respectively). These findings of the present study indicate that increased mtDNA copy number in PBLs is significantly associated with an increased risk of PCa and may be a reflection of tumor burden.
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Fernandes J, Michel V, Camorlinga-Ponce M, Gomez A, Maldonado C, De Reuse H, Torres J, Touati E. Circulating mitochondrial DNA level, a noninvasive biomarker for the early detection of gastric cancer. Cancer Epidemiol Biomarkers Prev 2014; 23:2430-8. [PMID: 25159292 DOI: 10.1158/1055-9965.epi-14-0471] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Gastric cancer represents a major health burden worldwide and is often diagnosed at an advanced stage. Biomarkers for screening and prevention of gastric cancer are missing. Changes in peripheral blood mitochondrial DNA (mtDNA) have emerged as a potential preventive/diagnosis biomarker for cancer risk. We aimed to determine whether peripheral leukocytes mtDNA levels are associated with stages of the gastric carcinogenesis cascade. METHODS We measured mtDNA by quantitative real-time PCR assay in peripheral leukocytes of 28 patients with non-atrophic gastritis (NAG), 74 patients with gastric cancer, and 48 matched asymptomatic controls. In parallel, the serologic level of IL8 was determined. RESULTS Mean mtDNA level was higher in patients with gastric cancer (P = 0.0095) than in controls, with values >8.46 significantly associated with gastric cancer (OR, 3.93). Three ranges of mtDNA values were identified: interval I, <2.0; interval II, 2.0-20; and interval III, >20. Interval I included mainly NAG cases, and few gastric cancer samples and interval III corresponded almost exclusively to patients with gastric cancer. All controls fell in interval II, together with some NAG and gastric cancer cases. IL8 levels were significantly higher in patients with gastric cancer (P < 0.05), with levels >50 pg/mL observed exclusively in patients with gastric cancer, allowing to distinguish them within interval II. We validated mtDNA results in a second cohort of patients, confirming that mtDNA was significantly higher in gastric cancer than in patients with preneoplasia. CONCLUSIONS Circulating levels of mtDNA and IL8 constitute a potential biomarker for the early detection of gastric cancer. IMPACT Our findings lead us to propose a new noninvasive method to detect patients with gastric cancer risk.
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Affiliation(s)
- Julien Fernandes
- Institut Pasteur, Department of Microbiology, Helicobacter Pathogenesis Unit. CNRS, Paris, France. CNRS, ERL3526, Paris, France
| | - Valérie Michel
- Institut Pasteur, Department of Microbiology, Helicobacter Pathogenesis Unit. CNRS, Paris, France. CNRS, ERL3526, Paris, France
| | | | - Alejandro Gomez
- Unidad de Investigacion en Enfermedades Infecciosas, UMAE Pediatria, IMSS, Mexico City, Mexico
| | | | - Hilde De Reuse
- Institut Pasteur, Department of Microbiology, Helicobacter Pathogenesis Unit. CNRS, Paris, France. CNRS, ERL3526, Paris, France
| | - Javier Torres
- Unidad de Investigacion en Enfermedades Infecciosas, UMAE Pediatria, IMSS, Mexico City, Mexico
| | - Eliette Touati
- Institut Pasteur, Department of Microbiology, Helicobacter Pathogenesis Unit. CNRS, Paris, France. CNRS, ERL3526, Paris, France.
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Hosnijeh FS, Lan Q, Rothman N, San Liu C, Cheng WL, Nieters A, Guldberg P, Tjønneland A, Campa D, Martino A, Boeing H, Trichopoulou A, Lagiou P, Trichopoulos D, Krogh V, Tumino R, Panico S, Masala G, Weiderpass E, Huerta Castaño JM, Ardanaz E, Sala N, Dorronsoro M, Quirós JR, Sánchez MJ, Melin B, Johansson AS, Malm J, Borgquist S, Peeters PH, Bueno-de-Mesquita HB, Wareham N, Khaw KT, Travis RC, Brennan P, Siddiq A, Riboli E, Vineis P, Vermeulen R. Mitochondrial DNA copy number and future risk of B-cell lymphoma in a nested case-control study in the prospective EPIC cohort. Blood 2014; 124:530-5. [PMID: 24899624 PMCID: PMC4110659 DOI: 10.1182/blood-2013-10-532085] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Accepted: 05/06/2014] [Indexed: 01/10/2023] Open
Abstract
It has been suggested that mitochondrial dysfunction and DNA damage are involved in lymphomagenesis. Increased copy number of mitochondrial DNA (mtDNA) as a compensatory mechanism of mitochondrial dysfunction previously has been associated with B-cell lymphomas, in particular chronic lymphocytic leukemia (CLL). However, current evidence is limited and based on a relatively small number of cases. Using a nested case-control study, we extended these findings with a focus on subtype-specific analyses. Relative mtDNA copy number was measured in the buffy coat of prospectively collected blood of 469 lymphoma cases and 469 matched controls. The association between mtDNA copy number and the risk of developing lymphoma and histologic subtypes was examined using logistic regression models. We found no overall association between mtDNA and risk of lymphoma. Subtype analyses revealed significant increased risks of CLL (n = 102) with increasing mtDNA copy number (odds ratio = 1.34, 1.44, and 1.80 for quartiles 2-4, respectively; P trend = .001). mtDNA copy number was not associated with follow-up time, suggesting that this observation is not strongly influenced by indolent disease status. This study substantially strengthens the evidence that mtDNA copy number is related to risk of CLL and supports the importance of mitochondrial dysfunction as a possible mechanistic pathway in CLL ontogenesis.
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Affiliation(s)
- Fatemeh Saberi Hosnijeh
- Institute for Risk Assessment Sciences, Division Environmental Epidemiology, Utrecht University, Utrecht, The Netherlands; Zanjan University of Medical Sciences, Zanjan, Iran
| | - Qing Lan
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD
| | - Nathaniel Rothman
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD
| | - Chin San Liu
- Department of Neurology and Vascular and Genomic Center, Changhua Christian Hospital, Changhua, Taiwan; Graduate Institute of Integrated Medicine, College of Chinese Medicine, China Medical University, Taichung, Taiwan
| | - Wen-Ling Cheng
- Laboratory of Mitochondrial Medicine, Chunghua Christian Hospital, Taipei, Taiwan
| | - Alexandra Nieters
- Centre of Chronic Immunodeficiency, University Medical Centre Freiburg, Freiburg, Germany
| | - Per Guldberg
- Danish Cancer Society Research Center, Copenhagen, Denmark
| | | | - Daniele Campa
- Genomic Epidemiology Group, German Cancer Research Center, Heidelberg, Germany
| | - Alessandro Martino
- Genomic Epidemiology Group, German Cancer Research Center, Heidelberg, Germany
| | - Heiner Boeing
- Department of Epidemiology, German Institute of Human Nutrition, Potsdam-Rehbrücke, Nuthetal, Germany
| | - Antonia Trichopoulou
- Hellenic Health Foundation, Athens, Greece; WHO Collaborating Center for Food and Nutrition Policies, Department of Hygiene, Epidemiology and Medical Statistics, University of Athens Medical School, Athens, Greece
| | - Pagona Lagiou
- WHO Collaborating Center for Food and Nutrition Policies, Department of Hygiene, Epidemiology and Medical Statistics, University of Athens Medical School, Athens, Greece; Department of Epidemiology, Harvard School of Public Health, Boston, MA; Bureau of Epidemiologic Research, Academy of Athens, Athens, Greece
| | - Dimitrios Trichopoulos
- Hellenic Health Foundation, Athens, Greece; Department of Epidemiology, Harvard School of Public Health, Boston, MA; Bureau of Epidemiologic Research, Academy of Athens, Athens, Greece
| | - Vittorio Krogh
- Epidemiology and Prevention Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Rosario Tumino
- Cancer Registry and Histopathology Unit, "Civic - M.P. Arezzo" Hospital, ASP Ragusa, Italy
| | - Salvatore Panico
- Department of Clinical Medicine and Surgery, Federico II University, Naples, Italy
| | - Giovanna Masala
- Molecular and Nutritional Epidemiology Unit, ISPO Cancer Research and Prevention Institute, Florence, Italy
| | - Elisabete Weiderpass
- Department of Community Medicine, Faculty of Health Sciences, University of Tromsø, Tromsø, Norway; Department of Research, Cancer Registry of Norway, Oslo, Norway; Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden; Samfundet Folkhälsan, Helsinki, Finland
| | - José María Huerta Castaño
- Department of Epidemiology, Murcia Regional Health Council, Murcia, Spain; CIBER Epidemiology and Public Health CIBERESP, Spain
| | - Eva Ardanaz
- CIBER Epidemiology and Public Health CIBERESP, Spain; Navarre Public Health Institute, Pamplona, Spain
| | - Núria Sala
- Translational Research Laboratory and Unit of Nutrition, Environment and Cancer Research Program in Cancer Epidemiology, Catalan Institute of Oncology, Biomedical Research Institute (IDIBELL), Barcelona, Spain
| | - Miren Dorronsoro
- Public Health Direction and Biodonostia Research Institute Ciberesp, Basque Regional Health Department, Vitoria, Spain
| | | | - María-José Sánchez
- CIBER Epidemiology and Public Health CIBERESP, Spain; Andalusian School of Public Health, Granada, Spain; Instituto de Investigación Biosanitario de Granada, Granada, Spain
| | - Beatrice Melin
- Department of Radiation Sciences, Oncology Umeå University, Umeå, Sweden
| | | | - Johan Malm
- Department of Laboratory Medicine, Clinical Chemistry, Lund University, Malmö, Sweden; Skåne University Hospital, Malmö, Sweden
| | - Signe Borgquist
- Division of Oncology, Department of Clinical Sciences, Lund University, Malmö, Sweden
| | - Petra H Peeters
- Department of Epidemiology, Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht
| | - H Bas Bueno-de-Mesquita
- National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands; Department of Gastroenterology and Hepatology, University Medical Centre, Utrecht, The Netherlands; The School of Public Health, Imperial College London, London, United Kingdom
| | - Nick Wareham
- MRC Epidemiology Unit, Institute of Metabolic Science, Addenbrooke's Hospital, Cambridge, United Kingdom; School of Clinical Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Kay-Tee Khaw
- School of Clinical Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Ruth C Travis
- Cancer Epidemiology Unit, University of Oxford, Oxford, United Kingdom
| | - Paul Brennan
- Genetics Section, International Agency for Research on Cancer, Lyon, France
| | - Afshan Siddiq
- Department of Genomics of Common Disease, School of Public Health, Imperial College London, London, United Kingdom
| | - Elio Riboli
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, United Kingdom; and
| | - Paolo Vineis
- The School of Public Health, Imperial College London, London, United Kingdom; Human Genetics Foundation, Turin, Italy
| | - Roel Vermeulen
- Institute for Risk Assessment Sciences, Division Environmental Epidemiology, Utrecht University, Utrecht, The Netherlands; Department of Epidemiology, Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht
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Sun Y, Gu J, Ajani JA, Chang DW, Wu X, Stroehlein JR. Genetic and intermediate phenotypic susceptibility markers of gastric cancer in Hispanic Americans: a case-control study. Cancer 2014; 120:3040-8. [PMID: 24962126 DOI: 10.1002/cncr.28792] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Revised: 03/27/2014] [Accepted: 04/01/2014] [Indexed: 12/12/2022]
Abstract
BACKGROUND Hispanics are the largest nonwhite ethnic group in the US population, and they have higher incidence and mortality rates for gastric cancer (GC) than whites and Asians. Studies have identified several genetic susceptibility loci and intermediate phenotypic biomarkers for GC in whites and Asians. No studies have evaluated genetic susceptibility and intermediate phenotypic biomarkers in Hispanics. METHODS In a case-control study of 132 Hispanic patients with GC (cases) and a control group of 125 Hispanics (controls), the authors evaluated the association of 5 single nucleotide polymorphisms (SNPs) that predispose whites and/or Asians to GC and of 2 intermediate phenotypic markers in peripheral blood leukocytes, ie, telomere length and mitochondrial DNA (mtDNA) copy number, with the GC risk. RESULTS The variant C allele of the reference SNP rs2294008 in the PSCA gene was associated with a significantly reduced risk of GC (per allele-adjusted odds ratio [aOR], 0.51; 95% confidence interval [CI], 0.33-0.77; P = .002). Leukocyte mtDNA copy numbers were significantly lower in GC cases (mean ± standard deviation, 0.91 ± 0.28) than in controls (1.29 ± 0.42; P < .001). When individuals were dichotomized into high and low mtDNA copy number groups based on the median mtDNA copy number value in the controls, those who had a low mtDNA copy number had a significantly increased risk of GC (aOR, 11.00; 95% CI, 4.79-25.23; P < .001) compared with those who had a high mtDNA copy number. Telomere length was not associated significantly with the risk of GC (aOR, 1.21; 95% CI, 0.65-2.27; P = .551). CONCLUSIONS Hispanics share certain genetic susceptibility loci and intermediate phenotypic GC biomarkers with whites and Asians and may also have distinct genetic susceptibility factors.
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Affiliation(s)
- Yuhui Sun
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, Texas; Department of Obstetrics and Gynecology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
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Dang S, Qu Y, Wei J, Shao Y, Yang Q, Ji M, Shi B, Hou P. Low copy number of mitochondrial DNA (mtDNA) predicts worse prognosis in early-stage laryngeal cancer patients. Diagn Pathol 2014; 9:28. [PMID: 24499477 PMCID: PMC3916805 DOI: 10.1186/1746-1596-9-28] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Accepted: 12/31/2013] [Indexed: 12/29/2022] Open
Abstract
Objectives Alterations in mitochondrial DNA (mtDNA) copy number have been widely reported in various human cancers, and been considered to be an important hallmark of cancers. However, little is known about the value of copy number variations of mtDNA in the prognostic evaluation of laryngeal cancer. Design and methods Using real-time quantitative PCR method, we investigated mtDNA copy number in a cohort of laryngeal cancers (n =204) and normal laryngeal tissues (n =40), and explored the association of variable mtDNA copy number with clinical outcomes of laryngeal cancer patients. Results Our data showed that the relative mean mtDNA content was higher in the laryngeal cancer patients (11.91 ± 4.35 copies) than the control subjects (4.72 ± 0.70 copies). Moreover, we found that mtDNA content was negatively associated with cigarette smoking (pack-years), tumor invasion, and TNM stage. Notably, variable mtDNA content did not affect overall survival of laryngeal cancer patients. However, when the patients were categorized into early-stage and late-stage tumor groups according to TNM stage, we found that low mtDNA content was strongly associated with poor survival in the former, but not in the latter. Conclusions The present study demonstrated that low mtDNA content was strongly correlated with some of clinicopathological characteristics, such as cigarette smoking, tumor invasion and TNM stage. In addition, we found a strong link between low mtDNA content and worse survival of the patients with early-stage tumors. Taken together, low copy number of mtDNA may be a useful poor prognostic factor for early-stage laryngeal cancer patients. Virtual slides The virtual slides for this article can be found here: http://www.diagnosticpathology.diagnomx.eu/vs/1841771572115955
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Affiliation(s)
| | | | | | | | | | | | | | - Peng Hou
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, 710061 Xi'an, the People's Republic of China.
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Hofmann JN, Hosgood HD, Liu CS, Chow WH, Shuch B, Cheng WL, Lin TT, Moore LE, Lan Q, Rothman N, Purdue MP. A nested case-control study of leukocyte mitochondrial DNA copy number and renal cell carcinoma in the Prostate, Lung, Colorectal and Ovarian Cancer Screening Trial. Carcinogenesis 2014; 35:1028-31. [PMID: 24398668 DOI: 10.1093/carcin/bgt495] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Mitochondrial DNA (mtDNA) is vulnerable to mutations, and the number of copies of mtDNA per cell may increase to compensate for DNA damage. Case-control studies have reported associations between altered mtDNA copy number and risk of renal cell carcinoma (RCC); however, this association has not been investigated prospectively. We conducted a nested case-control study (252 cases and 504 controls) of RCC risk in relation to pre-diagnostic leukocyte mtDNA copy number in the Prostate, Lung, Colorectal and Ovarian Cancer Screening Trial. mtDNA copy number was measured in triplicate using a fluorescence-based quantitative PCR assay; samples from 22 cases and 36 controls could not be assayed, leaving 230 cases and 468 controls for analysis. Odds ratios (ORs) and 95% confidence intervals (CIs) were estimated using unconditional logistic regression. High mtDNA copy number was associated with an increased risk of RCC, both overall (highest quartile versus lowest: OR = 2.0, 95% CI = 1.2-3.2; P trend = 0.002) and among cases diagnosed ≥6 years after blood collection (OR = 2.6, 95% CI = 1.4-5.0; P trend = 0.003). These findings did not differ significantly by sex, body mass index, history of hypertension or smoking status (P interaction ≥ 0.3). Results of this study suggest that high pre-diagnostic leukocyte mtDNA copy number, a suspected marker of oxidative DNA damage and mitochondrial dysfunction, is associated with increased future RCC risk.
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Affiliation(s)
- Jonathan N Hofmann
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD 20892, USA
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Zhang G, Qu Y, Dang S, Yang Q, Shi B, Hou P. Variable copy number of mitochondrial DNA (mtDNA) predicts worse prognosis in advanced gastric cancer patients. Diagn Pathol 2013; 8:173. [PMID: 24144008 PMCID: PMC4015835 DOI: 10.1186/1746-1596-8-173] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Accepted: 10/11/2013] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Change of mitochondrial DNA (mtDNA) copy number is widely reported in various human cancers, including gastric cancer, and is considered to be an important hallmark of cancers. However, there is remarkably little consensus on the value of variable mtDNA content in the prognostic evaluation of this cancer. METHODS Using real-time quantitative PCR approach, we examined mtDNA copy number in a cohort of gastric cancers and normal gastric tissues, and explored the association of variable mtDNA content with clinical outcomes of gastric cancer patients. RESULTS Our data showed that the majority of gastric cancer patients had low mtDNA content as compared to control subjects although the relative mean mtDNA content was higher in the former than the latter. Moreover, we found that variable mtDNA content was strongly associated with lymph node metastasis and cancer-related death of the patients with late-stage tumors. Notably, variable mtDNA content did not affect overall survival of gastric cancer patients, however, we found that increased mtDNA content was associated with poor survival in the patients with late-stage tumors. CONCLUSION In this study, we demonstrated that variable mtDNA content markedly increased the risk of lymph node metastasis and high mortality of the patients with late-stage tumors. Additionally, we found a strong link between increased mtDNA content and worse survival of the patients with late-stage tumors. Taken together, variable mtDNA content may be a valuable poor prognostic factor for advanced gastric cancer patients. VIRTUAL SLIDES The virtual slide(s) for this article can be found here: http://www.diagnosticpathology.diagnomx.eu/vs/1344721463103353.
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Affiliation(s)
| | | | | | | | | | - Peng Hou
- Department of Endocrinology, The First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an 710061, the People's Republic of China.
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Shen F, Huang W, Qi JH, Yuan BF, Huang JT, Zhou X, Feng YQ, Liu YJ, Liu SM. Association of 5-methylcytosine and 5-hydroxymethylcytosine with mitochondrial DNA content and clinical and biochemical parameters in hepatocellular carcinoma. PLoS One 2013; 8:e76967. [PMID: 24143196 PMCID: PMC3797098 DOI: 10.1371/journal.pone.0076967] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2013] [Accepted: 08/30/2013] [Indexed: 01/24/2023] Open
Abstract
Increasing epidemiological evidence has indicated that inherited variations of mitochondrial DNA (mtDNA) copy number affect the genetic susceptibility of many malignancies in a tumour-specific manner and that DNA methylation also plays an important role in controlling gene expression during the differentiation and development of hepatocellular carcinoma (HCC). Our previous study demonstrated that HCC tissues showed a lower 5-hydroxymethylcytosine (5-hmC) content when compared to tumour-adjacent tissues, but the relationship among 5-hmC, 5-methylcytosine (5-mC) and mtDNA content in HCC patients is still unknown. This study aimed to clarify the correlation among mtDNA content, 5-mC and 5-hmC by quantitative real-time PCR and liquid chromatography tandem mass spectrometry analysis. We demonstrated that 5-hmC correlated with tumour size [odds ratio (OR) 0.847, 95% confidence interval (CI) 0.746–0.962, P = 0.011], and HCC patients with a tumour size ≥5.0 cm showed a lower 5-hmC content and higher levels of fasting plasma aspartate aminotransferase, the ratio of alanine amiotransferase to aspartate aminotransferase, γ-glutamyltransferase, alpha-fetoprotein than those with a tumour size <5 cm (all P<0.05). We further revealed that the mtDNA content of HCC tumour tissues was 225.97(105.42, 430.54) [median (25th Percentile, 75th Percentile)] and was negatively correlated with 5-mC content (P = 0.035), but not 5-hmC content, in genomic DNA from HCC tumour tissues.
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Affiliation(s)
- Fan Shen
- Center for Gene Diagnosis, Medical Research Center, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Wei Huang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan, Hubei, China
| | - Jia-Hui Qi
- Center for Gene Diagnosis, Medical Research Center, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Bi-Feng Yuan
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan, Hubei, China
| | - Jing-Tao Huang
- Center for Gene Diagnosis, Medical Research Center, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Xin Zhou
- Center for Gene Diagnosis, Medical Research Center, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Yu-Qi Feng
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan, Hubei, China
| | - Ying-Juan Liu
- Center for Gene Diagnosis, Medical Research Center, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Song-Mei Liu
- Center for Gene Diagnosis, Medical Research Center, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
- * E-mail:
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Xu E, Sun W, Gu J, Chow WH, Ajani JA, Wu X. Association of mitochondrial DNA copy number in peripheral blood leukocytes with risk of esophageal adenocarcinoma. Carcinogenesis 2013; 34:2521-4. [PMID: 23803692 DOI: 10.1093/carcin/bgt230] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Alterations of mitochondrial DNA (mtDNA) have been associated with the risk of a number of human cancers; however, the relationship between mtDNA copy number in peripheral blood leukocytes and the risk of esophageal adenocarcinoma (EAC) has not been reported. In this study, we determined relative mtDNA copy number in peripheral blood leukocytes of 218 EAC cases and 218 frequency-matched controls. We calculated odds ratios and 95% confidence intervals using unconditional logistic regression, adjusting for age, sex and smoking status. MtDNA copy number was significantly lower in cases than in controls (mean ± SD, 1.16 ± 0.30 versus 1.27 ± 0.43, P = 0.002). Dichotomized at the median value of mtDNA copy number in the controls, low mtDNA copy number was significantly associated with an increased risk of EAC (odds ratio: 1.55, 95% confidence interval: 1.05-2.29). A significant dose-response relationship was observed between mtDNA copy number and risk of EAC in quartile analysis. Our results suggest that low mtDNA copy number in peripheral blood leukocytes is associated with increased susceptibility to EAC.
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Affiliation(s)
- Enping Xu
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
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40
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Thyagarajan B, Wang R, Nelson H, Barcelo H, Koh WP, Yuan JM. Mitochondrial DNA copy number is associated with breast cancer risk. PLoS One 2013; 8:e65968. [PMID: 23776581 PMCID: PMC3680391 DOI: 10.1371/journal.pone.0065968] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Accepted: 05/03/2013] [Indexed: 12/26/2022] Open
Abstract
Mitochondrial DNA (mtDNA) copy number in peripheral blood is associated with increased risk of several cancers. However, data from prospective studies on mtDNA copy number and breast cancer risk are lacking. We evaluated the association between mtDNA copy number in peripheral blood and breast cancer risk in a nested case-control study of 183 breast cancer cases with pre-diagnostic blood samples and 529 individually matched controls among participants of the Singapore Chinese Health Study. The mtDNA copy number was measured using real time PCR. Conditional logistic regression analyses showed that there was an overall positive association between mtDNA copy number and breast cancer risk (Ptrend = 0.01). The elevated risk for higher mtDNA copy numbers was primarily seen for women with <3 years between blood draw and cancer diagnosis; ORs (95% CIs) for 2nd, 3rd, 4th, and 5th quintile of mtDNA copy number were 1.52 (0.61, 3.82), 2.52 (1.03, 6.12), 3.12 (1.31, 7.43), and 3.06 (1.25, 7.47), respectively, compared with the 1st quintile (Ptrend = 0.004). There was no association between mtDNA copy number and breast cancer risk among women who donated a blood sample ≥3 years before breast cancer diagnosis (Ptrend = 0.41). This study supports a prospective association between increased mtDNA copy number and breast cancer risk that is dependent on the time interval between blood collection and breast cancer diagnosis. Future studies are warranted to confirm these findings and to elucidate the biological role of mtDNA copy number in breast cancer risk.
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Affiliation(s)
- Bharat Thyagarajan
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, Minnesota, United States of America.
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41
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Mondal R, Ghosh SK, Choudhury JH, Seram A, Sinha K, Hussain M, Laskar RS, Rabha B, Dey P, Ganguli S, NathChoudhury M, Talukdar FR, Chaudhuri B, Dhar B. Mitochondrial DNA copy number and risk of oral cancer: a report from Northeast India. PLoS One 2013; 8:e57771. [PMID: 23469236 PMCID: PMC3587625 DOI: 10.1371/journal.pone.0057771] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Accepted: 01/24/2013] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Oral squamous cell carcinoma (OSCC) is the sixth most common cancer globally. Tobacco consumption and HPV infection, both are the major risk factor for the development of oral cancer and causes mitochondrial dysfunction. Genetic polymorphisms in xenobiotic-metabolizing enzymes modify the effect of environmental exposures, thereby playing a significant role in gene-environment interactions and hence contributing to the individual susceptibility to cancer. Here, we have investigated the association of tobacco - betel quid chewing, HPV infection, GSTM1-GSTT1 null genotypes, and tumour stages with mitochondrial DNA (mtDNA) content variation in oral cancer patients. METHODOLOGY/PRINCIPAL FINDINGS The study comprised of 124 cases of OSCC and 140 control subjects to PCR based detection was done for high-risk HPV using a consensus primer and multiplex PCR was done for detection of GSTM1-GSTT1 polymorphism. A comparative ΔCt method was used for determination of mtDNA content. The risk of OSCC increased with the ceased mtDNA copy number (Ptrend = 0.003). The association between mtDNA copy number and OSCC risk was evident among tobacco - betel quid chewers rather than tobacco - betel quid non chewers; the interaction between mtDNA copy number and tobacco - betel quid was significant (P = 0.0005). Significant difference was observed between GSTM1 - GSTT1 null genotypes (P = 0.04, P = 0.001 respectively) and HPV infection (P<0.001) with mtDNA content variation in cases and controls. Positive correlation was found with decrease in mtDNA content with the increase in tumour stages (P<0.001). We are reporting for the first time the association of HPV infection and GSTM1-GSTT1 null genotypes with mtDNA content in OSCC. CONCLUSION Our results indicate that the mtDNA content in tumour tissues changes with tumour stage and tobacco-betel quid chewing habits while low levels of mtDNA content suggests invasive thereby serving as a biomarker in detection of OSCC.
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Affiliation(s)
- Rosy Mondal
- Department of Biotechnology, Assam University, Silchar, Assam, India
| | - Sankar Kumar Ghosh
- Department of Biotechnology, Assam University, Silchar, Assam, India
- * E-mail:
| | | | - Anil Seram
- Department of Biotechnology, Assam University, Silchar, Assam, India
| | - Kavita Sinha
- Department of Biotechnology, Assam University, Silchar, Assam, India
| | - Marine Hussain
- Department of Biotechnology, Assam University, Silchar, Assam, India
| | | | - Bijuli Rabha
- Department of Biotechnology, Assam University, Silchar, Assam, India
| | - Pradip Dey
- Department of Biotechnology, Assam University, Silchar, Assam, India
| | - Sabitri Ganguli
- Department of Biotechnology, Assam University, Silchar, Assam, India
| | | | | | | | - Bishal Dhar
- Department of Biotechnology, Assam University, Silchar, Assam, India
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Jose C, Melser S, Benard G, Rossignol R. Mitoplasticity: adaptation biology of the mitochondrion to the cellular redox state in physiology and carcinogenesis. Antioxid Redox Signal 2013; 18:808-49. [PMID: 22989324 DOI: 10.1089/ars.2011.4357] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Adaptation and transformation biology of the mitochondrion to redox status is an emerging domain of physiology and pathophysiology. Mitochondrial adaptations occur in response to accidental changes in cellular energy demand or supply while mitochondrial transformations are a part of greater program of cell metamorphosis. The possible role of mitochondrial adaptations and transformations in pathogenesis remains unexplored, and it has become critical to decipher the stimuli and the underlying molecular pathways. Immediate activation of mitochondrial function was described during acute exercise, respiratory chain injury, Endoplasmic Reticulum stress, genotoxic stress, or environmental toxic insults. Delayed adaptations of mitochondrial form, composition, and functions were evidenced for persistent changes in redox status as observed in endurance training, in fibroblasts grown in presence of respiratory chain inhibitors or in absence of glucose, in the smooth muscle of patients with severe asthma, or in the skeletal muscle of patients with a mitochondrial disease. Besides, mitochondrial transformations were observed in the course of human cell differentiation, during immune response activation, or in cells undergoing carcinogenesis. Little is known on the signals and downstream pathways that govern mitochondrial adaptations and transformations. Few adaptative loops, including redox sensors, kinases, and transcription factors were deciphered, but their implication in physiology and pathology remains elusive. Mitoplasticity could play a protective role against aging, diabetes, cancer, or neurodegenerative diseases. Research on adaptation and transformation could allow the design of innovative therapies, notably in cancer.
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Affiliation(s)
- Caroline Jose
- University Bordeaux, Maladies Rares: Génétique et Métabolisme, France
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Purdue MP, Hofmann JN, Colt JS, Hoxha M, Ruterbusch JJ, Davis FG, Rothman N, Wacholder S, Schwartz KL, Baccarelli A, Chow WH. A case-control study of peripheral blood mitochondrial DNA copy number and risk of renal cell carcinoma. PLoS One 2012; 7:e43149. [PMID: 22937019 PMCID: PMC3427307 DOI: 10.1371/journal.pone.0043149] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2012] [Accepted: 07/16/2012] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Low mitochondrial DNA (mtDNA) copy number is a common feature of renal cell carcinoma (RCC), and may influence tumor development. Results from a recent case-control study suggest that low mtDNA copy number in peripheral blood may be a marker for increased RCC risk. In an attempt to replicate that finding, we measured mtDNA copy number in peripheral blood DNA from a U.S. population-based case-control study of RCC. METHODOLOGY/PRINCIPAL FINDINGS Relative mtDNA copy number was measured in triplicate by a quantitative real-time PCR assay using DNA extracted from peripheral whole blood. Cases (n = 603) had significantly lower mtDNA copy number than controls (n = 603; medians 0.85, 0.91 respectively; P = 0.0001). In multiple logistic regression analyses, the lowest quartile of mtDNA copy number was associated with a 60% increase in RCC risk relative to the highest quartile (OR = 1.6, 95% CI = 1.1-2.2; P(trend) = 0.009). This association remained in analyses restricted to cases treated by surgery alone (OR (Q1) = 1.4, 95% CI = 1.0-2.1) and to localized tumors (2.0, 1.3-2.8). CONCLUSIONS/SIGNIFICANCE Our findings from this investigation, to our knowledge the largest of its kind, offer important confirmatory evidence that low mtDNA copy number is associated with increased RCC risk. Additional research is needed to assess whether the association is replicable in prospective studies.
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Affiliation(s)
- Mark P Purdue
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Department of Health and Human Services, Bethesda, Maryland, United States of America.
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44
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Thyagarajan B, Wang R, Barcelo H, Koh WP, Yuan JM. Mitochondrial copy number is associated with colorectal cancer risk. Cancer Epidemiol Biomarkers Prev 2012; 21:1574-81. [PMID: 22787200 DOI: 10.1158/1055-9965.epi-12-0138-t] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND Mitochondria are eukaryotic organelles responsible for energy production. Quantitative changes in human mitochondrial DNA (mtDNA) copy number have been implicated in various cancer types. Data from prospective cohort studies on mtDNA copy number and colorectal cancer risk have been lacking. METHODS We evaluated the association between mtDNA copy number in peripheral blood and colorectal cancer risk in a nested case-control study of 422 colorectal cancer cases (168 cases with pre-diagnostic blood and 254 cases with post-diagnostic blood) and 874 controls who were free of colorectal cancer among participants of the Singapore Chinese Health Study. The relative mtDNA copy number was measured using real-time PCR. Unconditional logistic regression methods were employed to examine the association between mtDNA copy number and colorectal cancer risk. RESULTS There was a U-shaped relationship between the relative mtDNA copy number and colorectal cancer risk. Compared with the 2nd quartile, the OR (95% confidence intervals) for subjects in the lowest and highest quartiles of relative mtDNA copy numbers were 1.81 (1.13-2.89) and 3.40 (2.15-5.36), respectively (P(curvilinearity) <0.0001). This U-shaped relationship was present in both men and women, similar for colon cancer and rectal cancer, and independent of the timing of blood draw with regard to cancer diagnosis. CONCLUSIONS This is the first prospectively designed study to show a U-shaped association between the relative mtDNA copy number and risk of colorectal cancer. IMPACT The findings of the present study support that mtDNA may play a critical role in the colorectal carcinogenesis in humans.
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Affiliation(s)
- Bharat Thyagarajan
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN 55455, USA.
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45
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Jose C, Rossignol R. Rationale for mitochondria-targeting strategies in cancer bioenergetic therapies. Int J Biochem Cell Biol 2012; 45:123-9. [PMID: 22776740 DOI: 10.1016/j.biocel.2012.07.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2012] [Revised: 06/13/2012] [Accepted: 07/01/2012] [Indexed: 01/24/2023]
Abstract
In the 1920s, Otto Warburg first hypothesized that mitochondrial impairment is a leading cause of cancer although he recognized the existence of oxidative tumors. Likewise, Weinhouse and others in the 50s found that deficient mitochondrial respiration is not an obligatory feature of cancer and Peter Vaupel suggested in the 1990s that tumor oxygenation rather than OXPHOS capacity was the limiting factor of mitochondrial energy production in cancer. Recent studies now clearly indicate that mitochondria are highly functional in mice tumors and the field of oncobioenergetic identified MYC, Oct1 and RAS as pro-OXPHOS oncogenes. In addition, cancer cells adaptation to aglycemia, metabolic symbiosis between hypoxic and non-hypoxic tumor regions as well the reverse Warburg hypothesis support the crucial role of mitochondria in the survival of a subclass of tumors. Therefore, mitochondria are now considered as potential targets for anti-cancer therapy and tentative strategies including a bioenergetic profile characterization of the tumor and the subsequent adapted bioenergetic modulation could be considered for cancer killing. This article is part of a Directed Issue entitled: Bioenergetic dysfunction, adaptation and therapy.
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Affiliation(s)
- Caroline Jose
- Univ. Bordeaux, Maladies Rares: Génétique et Métabolisme (MRGM), EA 4576, F-33000 Bordeaux, France
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Hyland PL, Pfeiffer RM, Rotunno M, Hofmann JN, Liu CS, Cheng WL, Yuenger J, Lan Q, Tucker MA, Goldstein AM, Yang XR. Constitutive mitochondrial DNA copy number in peripheral blood of melanoma families with and without CDKN2A mutations. ACTA ACUST UNITED AC 2012; 2014. [PMID: 25685612 DOI: 10.4172/2157-2518.s4-006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Quantitative changes in mitochondrial DNA (mtDNA) have been associated with the risk of a number of human cancers; however, the relationship between constitutive mtDNA copy number in blood and the risk of familial cutaneous malignant melanoma (CMM) has not been reported. We measured mtDNA copy number using quantitative PCR in blood-derived DNA from 136 CMM cases and 302 controls in 53 melanoma-prone families (23 segregating CDKN2A germline mutations). MtDNA copy number did not vary by age, sex, pigmentation characteristics, or CMM status. However, germline CDKN2A mutation carriers had significantly higher mean mtDNA copy number compared to non-carriers, particularly among CMM cases (geometric mean mtDNA copy number of 144 and 111 for carrier versus non-carrier, respectively; P= 0.02). When adjusting for age, sex, and familial correlation, having increasing mtDNA copy number was significantly associated with CDKN2A mutation status among CMM cases (OR=1.47, Ptrend=0.024). In particular, individuals with specific CDKN2A mutations with the potential to inactivate or reduce the level of the p16-INK4 reactive oxygen species (ROS) protective function had significantly increased mtDNA copy number levels (P=0.035). Future research in prospective studies is required to validate these findings and to further investigate mtDNA copy number in both blood and melanoma tissues in relation to CMM risk and CDKN2A mutation status.
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Affiliation(s)
- Paula L Hyland
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Ruth M Pfeiffer
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Melissa Rotunno
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Jonathan N Hofmann
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Chin-San Liu
- Vascular and Genomic Research Center, Changhua Christian Hospital, Changhua 500, Taiwan
| | - Wen-Ling Cheng
- Vascular and Genomic Research Center, Changhua Christian Hospital, Changhua 500, Taiwan
| | - Jeff Yuenger
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Qing Lan
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Margaret A Tucker
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Alisa M Goldstein
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Xiaohong R Yang
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD
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