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Yan Z, Yuan Q, He Y, Peng F, Liu Y, Zhang H, Ji X, He X, Zhao Q, Xing J, Guo X. Mitochondrial DNA haplogroup M7: A predictor of poor prognosis for colorectal cancer patients in Chinese population. Cancer Sci 2023; 114:1056-1066. [PMID: 36382493 PMCID: PMC9986060 DOI: 10.1111/cas.15654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 11/04/2022] [Accepted: 11/09/2022] [Indexed: 11/17/2022] Open
Abstract
Haplogroups and single-nucleotide polymorphisms (SNP) of mitochondrial DNA (mtDNA) were associated with the prognosis of many types of cancer patients. However, whether mtDNA haplogroups contribute to clinical outcomes of colorectal cancer (CRC) in Chinese population remains to be determined. In this study, mtDNA of tissue samples from 445 CRC patients from Northwestern China was sequenced to evaluate the association between haplogroup and prognosis. The mtDNA sequencing data of 1015 CRC patients from Southern China were collected for validation. We found patients with mtDNA haplogroup M7 had a significantly higher death risk when compared with patients with other haplogroups in both Northwestern (Hazard ratio [HR] = 3.093, 95% CI = 1.768-5.411, p < 0.001) and Southern (HR = 1.607, 95% CI = 1.050-2.459, p = 0.029) China. Then, a haplogroup M7-based mtSNP classifier was selected by using LASSO Cox regression analysis. A nomogram comprising the mtSNP classifier and clinicopathological variables was developed to predict the prognosis of CRC patients (area under the curve [AUC] 0.735, 95% CI = 0.679-0.791). Furthermore, patients with high- and low-risk scores calculated by the haplogroup M7-based mtSNP classifier exhibited significantly different overall survival (OS) and recurrence-free survival (RFS) (all p < 0.001). Finally, RNA-seq and immunohistochemical analyses indicated the poor prognosis of patients with haplogroup M7 may be related to mitochondrial dysfunction and immune abnormalities in CRC tissues. In conclusion, the haplogroup M7 and haplogroup M7-based mtSNP classifier seems to be a practical and reliable prognostic predictor for CRC patients, which provides a potential tool of clinical decision-making for patients with haplogroup M7 in Chinese population.
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Affiliation(s)
- Zeyu Yan
- Department of Physiology and Pathophysiology, State Key Laboratory of Cancer Biology, Fourth Military Medical University, Xi'an, China.,Department of General Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Qing Yuan
- Institute of Medical Research, Northwestern Polytechnical University, Xi'an, China
| | - Yiwei He
- Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Key Laboratory of Targeted Intervention of Cardiovascular Disease, Key Laboratory of Cardiovascular and Cerebrovascular Medicine, Nanjing Medical University, Nanjing, China
| | - Fan Peng
- Department of Physiology and Pathophysiology, State Key Laboratory of Cancer Biology, Fourth Military Medical University, Xi'an, China
| | - Yang Liu
- Department of Physiology and Pathophysiology, State Key Laboratory of Cancer Biology, Fourth Military Medical University, Xi'an, China
| | - Huanqin Zhang
- Department of Physiology and Pathophysiology, State Key Laboratory of Cancer Biology, Fourth Military Medical University, Xi'an, China
| | - Xiaoying Ji
- Department of Physiology and Pathophysiology, State Key Laboratory of Cancer Biology, Fourth Military Medical University, Xi'an, China
| | - Xianli He
- Department of General Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Qi Zhao
- Collaborative Innovation Center for Cancer Medicine, State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Sun Yat-sen University, Guangzhou, China
| | - Jinliang Xing
- Department of Physiology and Pathophysiology, State Key Laboratory of Cancer Biology, Fourth Military Medical University, Xi'an, China
| | - Xu Guo
- Department of Physiology and Pathophysiology, State Key Laboratory of Cancer Biology, Fourth Military Medical University, Xi'an, China
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Welch DR, Foster C, Rigoutsos I. Roles of mitochondrial genetics in cancer metastasis. Trends Cancer 2022; 8:1002-1018. [PMID: 35915015 PMCID: PMC9884503 DOI: 10.1016/j.trecan.2022.07.004] [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: 06/02/2022] [Revised: 06/27/2022] [Accepted: 07/07/2022] [Indexed: 01/31/2023]
Abstract
The contributions of mitochondria to cancer have been recognized for decades. However, the focus on the metabolic role of mitochondria and the diminutive size of the mitochondrial genome compared to the nuclear genome have hindered discovery of the roles of mitochondrial genetics in cancer. This review summarizes recent data demonstrating the contributions of mitochondrial DNA (mtDNA) copy-number variants (CNVs), somatic mutations, and germline polymorphisms to cancer initiation, progression, and metastasis. The goal is to summarize accumulating data to establish a framework for exploring the contributions of mtDNA to neoplasia and metastasis.
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Affiliation(s)
- Danny R Welch
- Department of Cancer Biology, The Kansas University Medical Center, 3901 Rainbow Boulevard, Kansas City, KS 66160, USA; Department of Internal Medicine (Hematology/Oncology), The Kansas University Medical Center, 3901 Rainbow Boulevard, Kansas City, KS 66160, USA; Department of Molecular and Integrative Physiology, The Kansas University Medical Center, 3901 Rainbow Boulevard, Kansas City, KS 66160, USA; Department of Pathology, The Kansas University Medical Center, 3901 Rainbow Boulevard, Kansas City, KS 66160, USA; The University of Kansas Comprehensive Cancer Center, 3901 Rainbow Boulevard, Kansas City, KS 66160, USA.
| | - Christian Foster
- Department of Cancer Biology, The Kansas University Medical Center, 3901 Rainbow Boulevard, Kansas City, KS 66160, USA
| | - Isidore Rigoutsos
- Computational Medicine Center, Sidney Kimmel College of Medicine, Thomas Jefferson University, 1020 Locust Street, Suite M81, Philadelphia, PA 19107, USA
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Yuan Q, Su L, Wang T, Liu Y, Lu Z, Zhou K, Guo S, Gu X, Xing J, Guo X. Mitochondrial DNA haplogroup M7 confers a reduced risk of colorectal cancer in a Han population from northern China. J Cell Mol Med 2021; 25:7538-7544. [PMID: 34288389 PMCID: PMC8335663 DOI: 10.1111/jcmm.16789] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 06/16/2021] [Accepted: 07/05/2021] [Indexed: 02/06/2023] Open
Abstract
Mitochondria are central eukaryotic organelles in cellular metabolism and ATP production. Mitochondrial DNA (mtDNA) alterations have been implicated in the development of colorectal cancer (CRC). However, there are few reports on the association between mtDNA haplogroups or single nucleotide polymorphisms (SNPs) and the risk of CRC. The mtDNA of 286 Northern Han Chinese CRC patients were sequenced by next-generation sequencing technology. MtDNA data from 811 Han Chinese population controls were collected from two public data sets. Then, logistic regression analysis was used to determine the effect of mtDNA haplogroup or SNP on the risk of CRC. We found that patients with haplogroup M7 exhibited a reduced risk of CRC when compared to patients with other haplogroups (odds ratio [OR] = 0.532, 95% confidence interval [CI] = 0.285-0.937, p = 0.036) or haplogroup B (OR = 0.477, 95% CI = 0.238-0.916, p = 0.030). Furthermore, haplogroup M7 was still associated with the risk of CRC when the validation and combined control cohort were used. In addition, several haplogroup M7 specific SNPs, including 199T>C, 4071C>T and 6455C>T, were significantly associated with the risk of CRC. Our results indicate the risk potential of mtDNA haplogroup M7 and SNPs in CRC in Northern China.
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Affiliation(s)
- Qing Yuan
- Institute of Medical Research, Northwestern Polytechnical University, Xi'an, China
| | - Liping Su
- State Key Laboratory of Cancer Biology and Department of Physiology and Pathophysiology, Fourth Military Medical University, Xi'an, China
| | - Tian Wang
- Laboratory Department, Shaanxi Provincial People's Hospital, Xi'an, China
| | - Yang Liu
- State Key Laboratory of Cancer Biology and Department of Physiology and Pathophysiology, Fourth Military Medical University, Xi'an, China
| | - Zhenxing Lu
- Institute of Medical Research, Northwestern Polytechnical University, Xi'an, China
| | - Kaixiang Zhou
- State Key Laboratory of Cancer Biology and Department of Physiology and Pathophysiology, Fourth Military Medical University, Xi'an, China
| | - Shanshan Guo
- State Key Laboratory of Cancer Biology and Department of Physiology and Pathophysiology, Fourth Military Medical University, Xi'an, China
| | - Xiwen Gu
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
| | - Jinliang Xing
- State Key Laboratory of Cancer Biology and Department of Physiology and Pathophysiology, Fourth Military Medical University, Xi'an, China
| | - Xu Guo
- State Key Laboratory of Cancer Biology and Department of Physiology and Pathophysiology, Fourth Military Medical University, Xi'an, China
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4
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Friedrich VK, Rubel MA, Schurr TG. Mitochondrial genetic variation in human bioenergetics, adaptation, and adult disease. Am J Hum Biol 2021; 34:e23629. [PMID: 34146380 DOI: 10.1002/ajhb.23629] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 05/27/2021] [Accepted: 05/28/2021] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVES Mitochondria are critical for the survival of eukaryotic organisms due to their ability to produce cellular energy, which drives virtually all aspects of host biology. However, the effects of mitochondrial DNA (mtDNA) variation in relation to disease etiology and adaptation within contemporary global human populations remains incompletely understood. METHODS To develop a more holistic understanding of the role of mtDNA diversity in human adaptation, health, and disease, we investigated mitochondrial biology and bioenergetics. More specifically, we synthesized details from studies of mitochondrial function and variation in the context of haplogroup background, climatic adaptation, and oxidative disease. RESULTS The majority of studies show that mtDNA variation arose during modern human dispersal around the world. Some of these variants appear to have been positively selected for their adaptiveness in colder climates, with these sequence changes having implications for tissue-specific function and thermogenic capacity. In addition, many variants modulating energy production are also associated with damaging metabolic byproducts and mitochondrial dysfunction, which, in turn, are implicated in the onset and severity of several different adult mitochondrial diseases. Thus, mtDNA variation that governs bioenergetics, metabolism, and thermoregulation may potentially have adverse consequences for human health, depending on the genetic background and context in which it occurs. CONCLUSIONS Our review suggests that the mitochondrial research field would benefit from independently replicating mtDNA haplogroup-phenotype associations across global populations, incorporating potentially confounding environmental, demographic, and disease covariates into studies of mtDNA variation, and extending association-based studies to include analyses of complete mitogenomes and assays of mitochondrial function.
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Affiliation(s)
- Volney K Friedrich
- Department of Anthropology, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Meagan A Rubel
- Department of Anthropology, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Center for Translational Imaging and Precision Medicine, University of California - San Diego, La Jolla, California, USA
| | - Theodore G Schurr
- Department of Anthropology, University of Pennsylvania, Philadelphia, Pennsylvania, USA
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Kozakiewicz P, Grzybowska-Szatkowska L, Ciesielka M, Rzymowska J. The Role of Mitochondria in Carcinogenesis. Int J Mol Sci 2021; 22:ijms22105100. [PMID: 34065857 PMCID: PMC8151940 DOI: 10.3390/ijms22105100] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 04/30/2021] [Accepted: 05/06/2021] [Indexed: 12/20/2022] Open
Abstract
The mitochondria are essential for normal cell functioning. Changes in mitochondrial DNA (mtDNA) may affect the occurrence of some chronic diseases and cancer. This process is complex and not entirely understood. The assignment to a particular mitochondrial haplogroup may be a factor that either contributes to cancer development or reduces its likelihood. Mutations in mtDNA occurring via an increase in reactive oxygen species may favour the occurrence of further changes both in mitochondrial and nuclear DNA. Mitochondrial DNA mutations in postmitotic cells are not inherited, but may play a role both in initiation and progression of cancer. One of the first discovered polymorphisms associated with cancer was in the gene NADH-ubiquinone oxidoreductase chain 3 (mt-ND3) and it was typical of haplogroup N. In prostate cancer, these mutations and polymorphisms involve a gene encoding subunit I of respiratory complex IV cytochrome c oxidase subunit 1 gene (COI). At present, a growing number of studies also address the impact of mtDNA polymorphisms on prognosis in cancer patients. Some of the mitochondrial DNA polymorphisms occur in both chronic disease and cancer, for instance polymorphism G5913A characteristic of prostate cancer and hypertension.
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Affiliation(s)
- Paulina Kozakiewicz
- Department of Radiotherapy, Medical University in Lublin, Chodźki 7, 20-093 Lublin, Poland; (L.G.-S.); (M.C.)
- Department of Radiotherapy, St. John’s Cancer Centre, The Regional Oncology Centre of Lublin Jaczewskiego 7, 20-090 Lublin, Poland
- Correspondence:
| | - Ludmiła Grzybowska-Szatkowska
- Department of Radiotherapy, Medical University in Lublin, Chodźki 7, 20-093 Lublin, Poland; (L.G.-S.); (M.C.)
- Department of Radiotherapy, St. John’s Cancer Centre, The Regional Oncology Centre of Lublin Jaczewskiego 7, 20-090 Lublin, Poland
| | - Marzanna Ciesielka
- Department of Radiotherapy, Medical University in Lublin, Chodźki 7, 20-093 Lublin, Poland; (L.G.-S.); (M.C.)
- Chair and Department of Forensic Medicine, Medical University in Lublin, Jaczewskiego 8b, 20-090 Lublin, Poland
| | - Jolanta Rzymowska
- Chair and Department of Biology and Genetics, Medical University of Lublin, Chodźki 4A, 20-093 Lublin, Poland;
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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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7
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Whole mitochondrial genome sequencing highlights mitochondrial impact in gastric cancer. Sci Rep 2019; 9:15716. [PMID: 31673122 PMCID: PMC6823544 DOI: 10.1038/s41598-019-51951-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 10/08/2019] [Indexed: 02/07/2023] Open
Abstract
Mitochondria are organelles that perform major roles in cellular operation. Thus, alterations in mitochondrial genome (mtGenome) may lead to mitochondrial dysfunction and cellular deregulation, influencing carcinogenesis. Gastric cancer (GC) is one of the most incident and mortal types of cancer in Brazil, particularly in the Amazon region. Here, we sequenced and compared the whole mtGenome extracted from FFPE tissue samples of GC patients (tumor and internal control – IC) and cancer-free individuals (external control – EC) from this region. We found 3-fold more variants and up to 9-fold more heteroplasmic regions in tumor when compared to paired IC samples. Moreover, tumor presented more heteroplasmic variants when compared to EC, while IC and EC showed no significant difference when compared to each other. Tumor also presented substantially more variants in the following regions: MT-RNR1, MT-ND5, MT-ND4, MT-ND2, MT-DLOOP1 and MT-CO1. In addition, our haplogroup results indicate an association of Native American ancestry (particularly haplogroup C) to gastric cancer development. To the best of our knowledge, this is the first study to sequence the whole mtGenome from FFPE samples and to apply mtGenome analysis in association to GC in Brazil.
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8
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Kenny TC, Gomez ML, Germain D. Mitohormesis, UPR mt, and the Complexity of Mitochondrial DNA Landscapes in Cancer. Cancer Res 2019; 79:6057-6066. [PMID: 31484668 DOI: 10.1158/0008-5472.can-19-1395] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 07/25/2019] [Accepted: 08/21/2019] [Indexed: 12/20/2022]
Abstract
The discovery of the Warburg effect, the preference of cancer cells to generate ATP via glycolysis rather than oxidative phosphorylation, has fostered the misconception that cancer cells become independent of the electron transport chain (ETC) for survival. This is inconsistent with the need of ETC function for the generation of pyrimidines. Along with this misconception, a large body of literature has reported numerous mutations in mitochondrial DNA (mtDNA), further fueling the notion of nonfunctional ETC in cancer cells. More recent findings, however, suggest that cancers maintain oxidative phosphorylation capacity and that the role of mtDNA mutations in cancer is likely far more nuanced in light of the remarkable complexity of mitochondrial genetics. This review aims at describing the various model systems that were developed to dissect the role of mtDNA in cancer, including cybrids, and more recently mitochondrial-nuclear exchange and conplastic mice. Furthermore, we put forward the notion of mtDNA landscapes, where the surrounding nonsynonymous mutations and variants can enhance or repress the biological effect of specific mtDNA mutations. Notably, we review recent studies describing the ability of some mtDNA landscapes to activate the mitochondrial unfolded protein response (UPRmt) but not others. Furthermore, the role of the UPRmt in maintaining cancer cells in the mitohormetic zone to provide selective adaptation to stress is discussed. Among the genes activated by the UPRmt, we suggest that the dismutases SOD2 and SOD1 may play key roles in the establishment of the mitohormetic zone. Finally, we propose that using a UPRmt nuclear gene expression signature may be a more reliable readout than mtDNA landscapes, given their diversity and complexity.
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Affiliation(s)
- Timothy C Kenny
- Division of Hematology/Oncology, Department of Medicine, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Maria L Gomez
- Division of Hematology/Oncology, Department of Medicine, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Doris Germain
- Division of Hematology/Oncology, Department of Medicine, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York.
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9
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Abstract
Mitochondria are essential intracellular organelles that are responsible for energy metabolism, cell growth, and differentiation, redox homeostasis, oncogenic signaling, and apoptosis. These multifunctional organelles have been implicated in cancer initiation, progression, and metastasis, relapse, and acquired drug resistance due to metabolic alterations in transformed cells. Maternally inherited mitochondrial DNA (mtDNA) is thought to contribute to cancer development and prognosis and proposed as a therapeutic target for cancer treatment. In this review, we summarize the current knowledge of mtDNA alterations, with a specific focus on somatic changes, germline variants, haplogroups, large deletions, and mtDNA content changes associated with cancer susceptibility and prognosis. We also discuss the potential of mtDNA as biomarkers of cancer detection and targets of cancer treatment. Deeper understanding of the mechanisms underlying these associations requires further investigation.
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10
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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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11
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Chen C, Ba Y, Li D, Du X, Lia X, Yang H, An J, Xing J, Yang H, Dong G, Guo X. Genetic variations of mitochondrial genome modify risk and prognosis of hepatocellular carcinoma patients. Clin Res Hepatol Gastroenterol 2017; 41:378-385. [PMID: 28215537 DOI: 10.1016/j.clinre.2016.12.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 11/21/2016] [Accepted: 12/15/2016] [Indexed: 02/07/2023]
Abstract
BACKGROUND Previous studies have indicated that mitochondrial genetic variations were associated with the risk of many cancers. However, there are few reports on the association between single nucleotide polymorphisms (SNPs) or haplogroups of mitochondrial DNA (mtDNA) and the risk or prognosis of hepatocellular carcinoma (HCC). METHODS In order to investigate the predictive and prognostic role of mtDNA SNPs and haplogroups in HCC, the mitochondrial genome of 188 HCC patients and 344 healthy controls were sequenced by next generation sequencing technology. Then, logistic regression analysis was used to determine the effect of mtDNA SNP or haplogroup on risk and prognosis of HCC patients. RESULTS The haplogroup M7 had an odds ratio (OR) of 0.47 (95% CI=0.24-0.91; P=0.026) to develop HCC. The frequency of 152T/C, 199T/C, 4048G/A, 9824T/C, 15784T/C, 16185C/T and 16399A/G was significantly different between HCC patients and the controls. In addition, multivariate analysis with COX hazards model showed that the patients with haplogroup M8 had lower survival rate than the patients with haplogroup D4 (HR=2.62, 95% CI=1.03-6.68; P=0.044). Three SNPs 15784T/C, 16185C/T and 16399A/G were also identified to have a statistically significant association with postoperative survival in HCC. CONCLUSIONS To date, these results provide the first evidence that mtDNA SNPs and haplogroups may be potential risk factors for susceptibility and survival of HCC patients.
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Affiliation(s)
- Cheng Chen
- State Key Laboratory of Cancer Biology and Experimental Teaching Center of Basic Medicine, The Fourth Military Medical University, 169, Changle West Road, 710032 Xi'an, China
| | - Yanna Ba
- Department of Clinical Immunology, Xijing Hospital, The Fourth Military Medical University, 710032 Xi'an, China
| | - Deyang Li
- State Key Laboratory of Cancer Biology and Experimental Teaching Center of Basic Medicine, The Fourth Military Medical University, 169, Changle West Road, 710032 Xi'an, China
| | - Xiaohong Du
- State Key Laboratory of Cancer Biology and Experimental Teaching Center of Basic Medicine, The Fourth Military Medical University, 169, Changle West Road, 710032 Xi'an, China
| | - Xin Lia
- Department of Pain Treatment, 403 Clinical Department, 210 Hospital of PLA, 116021 Liaoning, China
| | - Hai Yang
- Dean's Office, Department of Training, The Fourth Military Medical University, 710032 Xi'an, China
| | - Jiaze An
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, 710032 Xi'an, China
| | - Jinliang Xing
- State Key Laboratory of Cancer Biology and Experimental Teaching Center of Basic Medicine, The Fourth Military Medical University, 169, Changle West Road, 710032 Xi'an, China
| | - Hushan Yang
- Division of Population Science, Department of Medical Oncology, Kimmel Cancer Center, Thomas Jefferson University, 19107 Philadelphia, PA, USA
| | - Guanglong Dong
- Department of General Surgery, The General Hospital of PLA, 28, Fuxing Road, 100853 Beijing, China.
| | - Xu Guo
- State Key Laboratory of Cancer Biology and Experimental Teaching Center of Basic Medicine, The Fourth Military Medical University, 169, Changle West Road, 710032 Xi'an, China.
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12
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Wang Y, Zhao Y, Zhao Y, Luo X, Guo Z, Zhang R. Cancer risk associated single nucleotide polymorphisms of mitochondrial D-loop and 8-hydroxy-2'-deoxyguanosine levels in gastric cancer. BIOTECHNOL BIOTEC EQ 2017. [DOI: 10.1080/13102818.2016.1270173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Affiliation(s)
- Yingnan Wang
- Department of Gastroenterology and Hepatology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, P.R. China
| | - Yufei Zhao
- Department of Gastroenterology and Hepatology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, P.R. China
| | - Yue Zhao
- Department of Gastroenterology and Hepatology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, P.R. China
| | - Xiaoxu Luo
- Department of Gastroenterology and Hepatology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, P.R. China
| | - Zhanjun Guo
- Department of Gastroenterology and Hepatology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, P.R. China
| | - Ruixing Zhang
- Department of Gastroenterology and Hepatology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, P.R. China
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13
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The Associations of Genetic Variants in E-cadherin Gene With Clinical Outcome of Epithelial Ovarian Cancer. Int J Gynecol Cancer 2016; 26:1601-1607. [DOI: 10.1097/igc.0000000000000829] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
ObjectiveThe E-cadherin protein plays major roles in tumor progression, invasion, and metastasis. Polymorphisms located in the E-cadherin gene (CDH1) may contribute to increased risks of specific cancers. In this study, we evaluated the associations between genetic variants inCDH1and the clinical outcomes of patients with epithelial ovarian cancer (EOC).Materials and MethodsWe assessed the−160C/Aand−347G/GApolymorphisms in the promoter region, as well as the3′-UTR +54C/Tpolymorphism of E-cadherin, in 257 patients with EOC by ligase detection reaction–polymerase chain reaction.ResultsMultivariate analysis showed that patients with EOC with theCDH1 −347GA/GAgenotype had shorter progression-free survival and overall survival (hazard ratio [HR], 2.16; 95% confidence interval [CI], 1.06–4.40 and HR, 2.06; 95% CI, 1.01–4.19, respectively) compared to those carrying the G/G genotype. Likewise, the patients with theCDH1 −160A/Agenotype had a shorter progression-free survival than those with the C/C genotype (HR, 4.12; 95% CI, 1.43–111.88). No significant association was detected between theCDH1 3′-UTR +54C/Tpolymorphism and survival of the patients with EOC.ConclusionsTheCDH1 −347GA/GAand−160A/Agenotypes may be prognostic markers that can help to identify patients at increased risk of invasive/metastatic cancer in northern China.
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14
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Spotlight on the relevance of mtDNA in cancer. Clin Transl Oncol 2016; 19:409-418. [PMID: 27778302 DOI: 10.1007/s12094-016-1561-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Accepted: 10/06/2016] [Indexed: 02/06/2023]
Abstract
The potential role of the mitochondrial genome has recently attracted interest because of its high mutation frequency in tumors. Different aspects of mtDNA make it relevant for cancer's biology, such as it encodes a limited but essential number of genes for OXPHOS biogenesis, it is particularly susceptible to mutations, and its copy number can vary. Moreover, most ROS in mitochondria are produced by the electron transport chain. These characteristics place the mtDNA in the center of multiple signaling pathways, known as mitochondrial retrograde signaling, which modifies numerous key processes in cancer. Cybrid studies support that mtDNA mutations are relevant and exert their effect through a modification of OXPHOS function and ROS production. However, there is still much controversy regarding the clinical relevance of mtDNA mutations. New studies should focus more on OXPHOS dysfunction associated with a specific mutational signature rather than the presence of mutations in the mtDNA.
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