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Hovhannisyan G, Harutyunyan T, Aroutiounian R, Liehr T. The Diagnostic, Prognostic, and Therapeutic Potential of Cell-Free DNA with a Special Focus on COVID-19 and Other Viral Infections. Int J Mol Sci 2023; 24:14163. [PMID: 37762464 PMCID: PMC10532175 DOI: 10.3390/ijms241814163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 09/11/2023] [Accepted: 09/13/2023] [Indexed: 09/29/2023] Open
Abstract
Cell-free DNA (cfDNA) in human blood serum, urine, and other body fluids recently became a commonly used diagnostic marker associated with various pathologies. This is because cfDNA enables a much higher sensitivity than standard biochemical parameters. The presence of and/or increased level of cfDNA has been reported for various diseases, including viral infections, including COVID-19. Here, we review cfDNA in general, how it has been identified, where it can derive from, its molecular features, and mechanisms of release and clearance. General suitability of cfDNA for diagnostic questions, possible shortcomings and future directions are discussed, with a special focus on coronavirus infection.
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Affiliation(s)
- Galina Hovhannisyan
- Department of Genetics and Cytology, Yerevan State University, Alex Manoogian 1, Yerevan 0025, Armenia; (G.H.); (T.H.); (R.A.)
| | - Tigran Harutyunyan
- Department of Genetics and Cytology, Yerevan State University, Alex Manoogian 1, Yerevan 0025, Armenia; (G.H.); (T.H.); (R.A.)
| | - Rouben Aroutiounian
- Department of Genetics and Cytology, Yerevan State University, Alex Manoogian 1, Yerevan 0025, Armenia; (G.H.); (T.H.); (R.A.)
| | - Thomas Liehr
- Jena University Hospital, Friedrich Schiller University, Institute of Human Genetics, Am Klinikum 1, 07747 Jena, Germany
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Telomere Length Changes in Cancer: Insights on Carcinogenesis and Potential for Non-Invasive Diagnostic Strategies. Genes (Basel) 2023; 14:genes14030715. [PMID: 36980987 PMCID: PMC10047978 DOI: 10.3390/genes14030715] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/08/2023] [Accepted: 03/10/2023] [Indexed: 03/17/2023] Open
Abstract
Telomere dynamics play a crucial role in the maintenance of chromosome integrity; changes in telomere length may thus contribute to the development of various diseases including cancer. Understanding the role of telomeric DNA in carcinogenesis and detecting the presence of cell-free telomeric DNA (cf-telDNA) in body fluids offer a potential biomarker for novel cancer screening and diagnostic strategies. Liquid biopsy is becoming increasingly popular due to its undeniable benefits over conventional invasive methods. However, the organization and function of cf-telDNA in the extracellular milieu are understudied. This paper provides a review based on 3,398,017 cancer patients, patients with other conditions, and control individuals with the aim to shed more light on the inconsistent nature of telomere lengthening/shortening in oncological contexts. To gain a better understanding of biological factors (e.g., telomerase activation, alternative lengthening of telomeres) affecting telomere homeostasis across different types of cancer, we summarize mechanisms responsible for telomere length maintenance. In conclusion, we compare tissue- and liquid biopsy-based approaches in cancer assessment and provide a brief outlook on the methodology used for telomere length evaluation, highlighting the advances of state-of-the-art approaches in the field.
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Hiyama A, Sakai D, Nomura S, Katoh H, Watanabe M. Analysis of cell-free circulating DNA fragment size and level in patients with lumbar canal stenosis. JOR Spine 2022; 5:e1189. [PMID: 35783906 PMCID: PMC9238277 DOI: 10.1002/jsp2.1189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 12/09/2021] [Accepted: 12/15/2021] [Indexed: 11/23/2022] Open
Abstract
Cell-free circulating DNA (cfDNA), extracted by liquid biopsy, has been studied as a noninvasive biomarker for various diseases. The potential of cfDNA fragment size and level as a marker in lumbar canal stenosis (LCS) patients has never been studied. We investigated whether cfDNA is a biomarker of low back pain, leg pain, leg numbness severity in patients with an LCS. Blood samples were obtained from patients with LCS (n = 22) before and immediately after spinal surgery. Plasma DNA was isolated and examined for cfDNA fragment size and concentration. A cohort of healthy volunteers (n = 5) constituted the control group. The cfDNA fragment size tended to be shorter in patients than in healthy controls, but this difference was not significant (P = .186). cfDNA level was significantly higher in LCS patients (mean 0.614 ± 0.198 ng/μL, range 0.302-1.150 ng/μL) than in healthy controls (mean 0.429 ± 0.064 ng/μL, range 0.366-0.506 ng/μL) (P = .008). cfDNA level correlated positively with average pain (r = .435, P = .026) and leg numbness (r = .451, P = .018). cfDNA fragment size did not differ from before to after surgery, but cfDNA level increased postoperatively in patients with LCS. This was the first study investigating whether cfDNA fragment size and level are associated with pain in patients with LCS. Our findings suggest that cfDNA level may be an objective indicator of pain and surgical invasiveness in patients with LCS.
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Affiliation(s)
- Akihiko Hiyama
- Department of Orthopaedic Surgery, Surgical ScienceTokai University School of MedicineIseharaKanagawaJapan
| | - Daisuke Sakai
- Department of Orthopaedic Surgery, Surgical ScienceTokai University School of MedicineIseharaKanagawaJapan
| | - Satoshi Nomura
- Department of Orthopaedic Surgery, Surgical ScienceTokai University School of MedicineIseharaKanagawaJapan
| | - Hiroyuki Katoh
- Department of Orthopaedic Surgery, Surgical ScienceTokai University School of MedicineIseharaKanagawaJapan
| | - Masahiko Watanabe
- Department of Orthopaedic Surgery, Surgical ScienceTokai University School of MedicineIseharaKanagawaJapan
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Druzhinin VG, Baranova ED, Volobaev VP, Ivanov VI, Larionov AV, Minina VI, Smagulova F, Legoff L, Titov VA, Fucic A. The Length of Telomeres and the Baseline Level of Cytogenetic Damage in Leukocytes of Lung Cancer Patients. RUSS J GENET+ 2022. [DOI: 10.1134/s1022795422010021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Barrera-Saldaña HA, Fernández-Garza LE, Barrera-Barrera SA. Liquid biopsy in chronic liver disease. Ann Hepatol 2021; 20:100197. [PMID: 32444248 DOI: 10.1016/j.aohep.2020.03.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 03/25/2020] [Indexed: 02/04/2023]
Abstract
Chronic liver diseases account for a considerable toll of incapacities, suffering, deaths, and resources of the nation's health systems. They can be prevented, treated or even cured when the diagnosis is made on time. Traditional liver biopsy remains the gold standard to diagnose liver diseases, but it has several limitations. Liquid biopsy is emerging as a superior alternative to surgical biopsy given that it surpasses the limitations: it is more convenient, readily and repeatedly accessible, safe, cheap, and provides a more detailed molecular and cellular representation of the individual patient's disease. Progress in understanding the molecular and cellular bases of diseased tissues and organs that normally release cells and cellular components into the bloodstream is catapulting liquid biopsy as a source of biomarkers for diagnosis, prognosis, and prediction of therapeutic response, thus supporting the realization of the promises of precision medicine. The review aims to summarize the evidence of the usefulness of liquid biopsy in liver diseases, including the presence of different biomarkers as circulating epithelial cells, cell-free nucleic acids, specific species of DNA and RNA, and the content of extracellular vesicles.
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Affiliation(s)
- Hugo A Barrera-Saldaña
- Innbiogem SC at National Laboratory for Services of Research, Development, and Innovation for the Pharma and Biotech Industries (LANSEDI) of CONACyT Vitaxentrum group, Monterrey, N.L., Mexico; Center for Biotechnological Genomics of National Polytechnical Institute, Reynosa, Tamps., Mexico.
| | - Luis E Fernández-Garza
- Innbiogem SC at National Laboratory for Services of Research, Development, and Innovation for the Pharma and Biotech Industries (LANSEDI) of CONACyT Vitaxentrum group, Monterrey, N.L., Mexico
| | - Silvia A Barrera-Barrera
- Innbiogem SC at National Laboratory for Services of Research, Development, and Innovation for the Pharma and Biotech Industries (LANSEDI) of CONACyT Vitaxentrum group, Monterrey, N.L., Mexico; National Institute of Pediatrics, Mexico City, Mexico
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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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Zhou G, Li Y, Li S, Liu H, Xu F, Lai X, Zhang Q, Xu J, Wan S. Circulating Cell-Free mtDNA Content as a Non-invasive Prognostic Biomarker in HCC Patients Receiving TACE and Traditional Chinese Medicine. Front Genet 2021; 12:719451. [PMID: 34603382 PMCID: PMC8481798 DOI: 10.3389/fgene.2021.719451] [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: 06/02/2021] [Accepted: 08/17/2021] [Indexed: 12/18/2022] Open
Abstract
Hepatocellular carcinoma (HCC) accounts for 70-85% of liver cancer, and about 85% of HCC are hepatitis B virus-related (HBV-HCC) in China. Transarterial chemoembolization (TACE) combined with traditional Chinese medicine (TCM) has been reported as an effective treatment. Potential biomarkers to stratify patients who may benefit from this treatment are needed. In this study, we aimed to evaluate whether circulating cell-free mitochondrial DNA (ccf-mtDNA) content was associated with the outcome of HCC patients, especially of those who received the combination treatment of TACE and TCM. Univariate and multivariate Cox analyses were conducted to evaluate the association between ccf-mtDNA content and the overall survival of HBV-HCC patients. Kaplan-Meier analysis was used to compare the survival differences between patients with low and high ccf-mtDNA content. In a hospital-based cohort with 141 HBV-HCC patients, there was no statistically significant association between the ccf-mtDNA content and the overall survival of HBV-HCC patients in the univariate analysis, but a borderline significant association was found in the multivariate analyses. In a subcohort of 50 HBV-HCC patients who received TACE and TCM treatment, high ccfDNA content conferred an increased death risk with a hazard ratio of 4.01 (95% confidence interval: 1.25-12.84, p = 0.019) in the multivariate analysis. Kaplan-Meier survival analysis also showed that patients with high ccf-mtDNA content had unfavorable survival (log rank p = 0.097). Our findings suggest that ccf-mtDNA content is a potential non-invasive prognostic biomarker in HCC patients receiving TACE and TCM treatment.
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Affiliation(s)
- Guanlin Zhou
- Institute of Hepatology, Department of Hepatology, The Affiliated Fifth People's Hospital of Ganzhou, Gannan Medical University, Ganzhou, China
| | - Ying Li
- Center for Molecular Pathology, Department of Basic Medicine, Gannan Medical University, Ganzhou, China
| | - Shicheng Li
- Center for Molecular Pathology, Department of Basic Medicine, Gannan Medical University, Ganzhou, China
| | - Hongxia Liu
- Institute of Hepatology, Department of Hepatology, The Affiliated Fifth People's Hospital of Ganzhou, Gannan Medical University, Ganzhou, China
| | - Fei Xu
- Institute of Hepatology, Department of Hepatology, The Affiliated Fifth People's Hospital of Ganzhou, Gannan Medical University, Ganzhou, China
| | - Xiaohuan Lai
- Institute of Hepatology, Department of Hepatology, The Affiliated Fifth People's Hospital of Ganzhou, Gannan Medical University, Ganzhou, China
| | - Qiong Zhang
- Department of Emergency Medicine, First Affiliated Hospital, Gannan Medical University, Ganzhou, China
| | - Jingxiang Xu
- Center for Molecular Pathology, Department of Basic Medicine, Gannan Medical University, Ganzhou, China
| | - Shaogui Wan
- Institute of Hepatology, Department of Hepatology, The Affiliated Fifth People's Hospital of Ganzhou, Gannan Medical University, Ganzhou, China.,Center for Molecular Pathology, Department of Basic Medicine, Gannan Medical University, Ganzhou, China
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Shen G, Huang JY, Huang YQ, Feng YQ. The Relationship between Telomere Length and Cancer Mortality: Data from the 1999-2002 National Healthy and Nutrition Examination Survey (NHANES). J Nutr Health Aging 2020; 24:9-15. [PMID: 31886802 DOI: 10.1007/s12603-019-1265-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
OBJECTIVES The association between telomeres length (TL) and cancer mortality is uncertain. We tested the hypotheses that long TL are associated with reduced cancer mortality. DESIGN Prospective cohort study. SETTING the National Health and Nutrition Survey (NHANES, 1999-2002). PARTICIPANTS The analytic sample included adults (n = 7183) who had TL measurements. MEASUREMENTS DNA was obtained via blood samples. Telomere length was assessed using the quantitative polymerase chain reaction method. RESULTS During follow-up (0.08-12.7 person-years, median = 9.5 years), we observed 195 participants had cancer as causes of death. TL was negatively corelated with age, body mass index (BMI), systolic blood pressure (SBP), C-reactive protein (CRP), race, diabetes, hypertension, cardiovascular diseases (CVD) and cancer mortality, conversely, positively corelated with alcohol use, but not related to diastolic blood pressure (DBP) and smoking. Kaplan-Meier analysis revealed that TL was significantly associated with cancer mortality (log-rank, P <0.001). CONCLUSIONS Our study expands upon previous evidence of a relationship between TL and cancer mortality. TL may be a useful tool for evaluating risk of cancer mortality in American adults.
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Affiliation(s)
- G Shen
- YingQing Feng, Department of Cardiology, Guangdong Cardiovascular Institute, Hypertension Research Laboratory, Guangdong Provincial People's Hospital, Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Academy of Medical Sciences, School of Medicine, South China University of Technology, 510080 Guangzhou, China,
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Liu Y, Li H, Ye N, Luo CJ, Hu YY, Wu H, Gong JP. Non-Cirrhotic Liver is Associated with Poor Prognosis of Hepatocellular Carcinoma: A Literature Review. Med Sci Monit 2019; 25:6615-6623. [PMID: 31479436 PMCID: PMC6752105 DOI: 10.12659/msm.915722] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Accepted: 04/19/2019] [Indexed: 12/15/2022] Open
Abstract
Primary hepatocellular carcinoma (HCC) is the fifth most frequently reported malignancy, and it is also the second most common cause of cancer-related deaths worldwide. Although most HCC cases have been reported to develop from cirrhosis, accumulating data suggest that HCC is also closely related to non-cirrhotic chronic liver disease. Traditionally, HCC was thought to develop mostly from cirrhosis; however, an increasing number of reports have found that HCC can develop directly from inflammation without cirrhosis. The incidence of HCC in non-cirrhotic liver (HCC-NCL) is high, especially in developed countries. Studies have found that the most common cause of HCC-NCL is neglected fatty liver disease. This type of HCC has unique clinical characteristics and is closely related to metabolic disorders. Unfortunately, the prevention of HCC-NCL has not received enough attention worldwide, and there is also a lack of specific screening methods and clinical guidelines. This article mainly reviews the etiology, incidence, clinical characteristics, and screening markers of HCC-NCL to improve the understanding and prevention of this disease.
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Affiliation(s)
- Yan Liu
- Department of Gastroenterology, Chengdu Fifth People’s Hospital, Chengdu, Sichuan, P.R. China
| | - Hao Li
- Department of Gastroenterology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, P.R. China
| | - Nan Ye
- Department of Hepatobiliary Surgery, Dongyang People’s Hospital, Jinhua, Zhejiang, P.R. China
| | - Cheng-Jun Luo
- Department of Gastroenterology, Chengdu Fifth People’s Hospital, Chengdu, Sichuan, P.R. China
| | - Ye-Yu Hu
- Department of Clinical Medicine, Southwest Medical University, Luzhou, Sichuan, P.R. China
| | - Hao Wu
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, P.R. China
| | - Jian-Ping Gong
- Chongqing Key Laboratory of Hepatobiliary Surgery and Department of Hepatobiliary Surgery, Second Affiliated Hospital of Chongqing Medical University, Chongqing, P.R. China
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Reporting and guidelines for mendelian randomization analysis: A systematic review of oncological studies. Cancer Epidemiol 2019; 62:101577. [PMID: 31377572 DOI: 10.1016/j.canep.2019.101577] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 07/16/2019] [Accepted: 07/22/2019] [Indexed: 11/21/2022]
Abstract
BACKGROUND Mendelian randomization (MR) analyses have been increasingly used to seek evidence of causal associations. This systematic review aims at characterizing and evaluating the reporting of MR analyses in oncological studies. METHODS The PubMed database was searched to identify MR cancer studies until December 31, 2017. Two of the authors independently selected and evaluated reporting quality of the studies. Reporting quality in MR studies before 2016 and in 2016/17 was compared. RESULTS Cancer studies with MR analyses in 2016 and 2017 accounted for 55.8% of the total number of studies identified. In the 77 eligible articles, 39 (50.6%) did not report subjects' characteristics, 53 (68.8%) did not conduct power estimation, 40 (51.9%) did not state all of the first three MR assumptions (i.e., genetic instrument is associated with exposure, is not associated with confounders, and acts on outcome only through exposure), and 31 (40.3%) did not exclude SNPs that diverged from Hardy-Weinberg equilibrium. More studies estimated power in 2016/2017 than before 2016 (p = 0.028). CONCLUSIONS Some MR cancer studies did not sufficiently report essential information, posing obstacles for critical appraisal. This study proposes for MR analysis a guideline/checklist for future publications in cancer and other biomedical research.
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Desai A, Sandhu S, Lai JP, Sandhu DS. Hepatocellular carcinoma in non-cirrhotic liver: A comprehensive review. World J Hepatol 2019; 11:1-18. [PMID: 30705715 PMCID: PMC6354117 DOI: 10.4254/wjh.v11.i1.1] [Citation(s) in RCA: 178] [Impact Index Per Article: 35.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 12/22/2018] [Accepted: 01/01/2019] [Indexed: 02/06/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is the most common type of primary liver cancer, which in turns accounts for the sixth most common cancer worldwide. Despite being the 6th most common cancer it is the second leading cause of cancer related deaths. HCC typically arises in the background of cirrhosis, however, about 20% of cases can develop in a non-cirrhotic liver. This particular subgroup of HCC generally presents at an advanced stage as surveillance is not performed in a non-cirrhotic liver. HCC in non-cirrhotic patients is clinically silent in its early stages because of lack of symptoms and surveillance imaging; and higher hepatic reserve in this population. Interestingly, F3 fibrosis in non-alcoholic fatty liver disease, hepatitis B virus and hepatitis C virus infections are associated with high risk of developing HCC. Even though considerable progress has been made in the management of this entity, there is a dire need for implementation of surveillance strategies in the patient population at risk, to decrease the disease burden at presentation and improve the prognosis of these patients. This comprehensive review details the epidemiology, risk factors, clinical features, diagnosis and management of HCC in non-cirrhotic patients and provides future directions for research.
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Affiliation(s)
- Aakash Desai
- Department of Internal Medicine, Case Western Reserve University/MetroHealth Medical Center, Cleveland, OH 44109, United States
| | - Sonia Sandhu
- Department of Hematology and Oncology, Cleveland Clinic/Akron General Medical Center, Akron, OH 44307, United States
| | - Jin-Ping Lai
- Department of Pathology, University of Florida, Gainsville, FL 32611, United States
| | - Dalbir Singh Sandhu
- Division of Gastroenterology and Hepatology, Case Western Reserve University/MetroHealth Medical Center, Cleveland, OH 44109, the United States
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Bian Z, Hann HW, Ye Z, Yin C, Wang Y, Fang W, Wan S, Wang C, Tao K. Ferritin level prospectively predicts hepatocarcinogenesis in patients with chronic hepatitis B virus infection. Oncol Lett 2018; 16:3499-3508. [PMID: 30127954 PMCID: PMC6096080 DOI: 10.3892/ol.2018.9099] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 05/24/2018] [Indexed: 02/07/2023] Open
Abstract
Previous studies have detected a higher level of ferritin in patients with hepatocellular carcinoma (HCC), but a potential causal association between serum ferritin level and hepatocarcinogenesis remains to be clarified. Using a well-established prospective cohort and longitudinally collected serial blood samples, the association between baseline ferritin levels and HCC risk were evaluated in 1,152 patients infected with hepatitis B virus (HBV), a major risk factor for HCC. The association was assessed by Cox proportional hazards regression model using univariate and multivariate analyses and longitudinal analysis. It was demonstrated that HBV patients who developed HCC had a significantly higher baseline ferritin level than those who remained cancer-free (188.00 vs. 108.00 ng/ml, P<0.0001). The patients with a high ferritin level (≥200 ng/ml) had 2.43-fold increased risk of HCC compared to those with lower ferritin levels [hazard ratio (HR), 2.43; 95% confidence interval, 1.63–3.63]. A significant trend of increasing HRs along with elevated ferritin levels was observed (P for trend <0.0001). The association was still significant after multivariate adjustment. Incorporating ferritin into the α-fetoprotein (AFP) model significantly improved the performance of HCC prediction (the area under the curve from 0.74 to 0.77, P=0.003). Longitudinal analysis showed that the average ferritin level in HBV patients who developed HCC was persistently higher than in those who were cancer-free during follow-up. HCC risk reached a peak at approximately the fifth year after baseline ferritin detection. Moreover, stratified analyses showed that the association was noted in both males and females, and was prominent in patients with a low AFP value. In short, serum ferritin level could independently predict the risk of HBV-related HCC and may have a complementary role in AFP-based HCC diagnosis. Future studies are warranted to validate these findings and test its clinical applicability in HCC prevention and management.
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Affiliation(s)
- Zhenyuan Bian
- Department of Hepatobiliary Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Hie-Won Hann
- Division of Gastroenterology and Hepatology, Department of Medicine, Liver Disease Prevention Center, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Zhong Ye
- Division of Population Science, Department of Medical Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Chun Yin
- State Key Laboratory of Cancer Biology and Experimental Teaching Center of Basic Medicine, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Yang Wang
- Department of Hepatobiliary Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Wan Fang
- State Key Laboratory of Cancer Biology and Experimental Teaching Center of Basic Medicine, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Shaogui Wan
- Institute of Pharmacy, Pharmaceutical College of Henan University, Kaifeng, Henan 475004, P.R. China
| | - Chun Wang
- Division of Population Science, Department of Medical Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Kaishan Tao
- Department of Hepatobiliary Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
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Mohamadkhani A, Pourasgari M, Poustchi H. Significant SNPs Related to Telomere Length and Hepatocellular Carcinoma Risk in Chronic Hepatitis B Carriers. Asian Pac J Cancer Prev 2018; 19:585-590. [PMID: 29579787 PMCID: PMC5980828 DOI: 10.22034/apjcp.2018.19.3.585] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Chronic hepatitis B virus (HBV) infection increases the risk of developing cirrhosis and hepatocellular carcinoma (HCC) with suspected interactions between virus replication and host immune responses. A number of reports have suggested that telomerase function may be involved in chronic hepatitis B (CHB) pathogenesis, but positive or negative associations with HCC risk remain for discussion. Mean telomere length is an indicator of biological aging and it has been reported that reduction in NBV carriers compared to normal individuals. In somatic cells, telomeres contain simple, tandemly repeated G-rich sequences that frequently are reduced by 50 to 200 base pairs at each cell division. Several genome-wide association studies (GWAS) in diverse ethnic populations have revealed eleven single nucleotide polymorphisms (SNPs) linked to telomere length. Two of these, rs398652 and rs621559, have prognostic value and could be used as genetic markers. This review describes current knowledge concerning telomerase activity and telomere length as well as significant polymorphisms in HBV-related HCC patients. In particular, to cast light on genotype-phenotype interactions, we used SNPnexus to evaluate effects of the two SNPs on risk of disease and complex disorders.
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Affiliation(s)
- Ashraf Mohamadkhani
- Liver and Pancreatobiliary Diseases Research Center, Digestive Disease Research Institute, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran.
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Zhang Y, Wang S, Wen X, Zhang S, Yang Y. Association of ACYP2 and MPHOSPH6 genetic polymorphisms with the risk of hepatocellular carcinoma in chronic hepatitis B virus carriers. Oncotarget 2017; 8:86011-86019. [PMID: 29156773 PMCID: PMC5689663 DOI: 10.18632/oncotarget.20846] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Accepted: 08/02/2017] [Indexed: 12/02/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is the dominant histologic type of primary liver cancer, and hepatitis B virus (HBV) infection is one of the major causes of HCC in the chronic HBV. Our study was investigated the association between the polymorphisms of ACYP2 and MPHOSPH6 genes and the risk of HCC induced by HBV infection. A total of 490 subjects were divided into two groups: 248 HBV patients with HCC (Case group), and 242 HBV patients without HCC (Control group). Unconditional logistic regression analysis was used to evaluate the association. The genetic association analysis revealed variant of rs12621038 in ACYP2 gene had a significant association with increasing the risk of HBV-induced HCC based on the genotype, dominant and additive model (P<0.05). Moreover, our results also showed that minor allele “C” of rs3751862 was prevalent in cases than controls (P<0.05), and rs3751862 significantly increased the risk of HCC in chronic HBV carriers under genotype and dominant model (P<0.05). In addition, the haplotype “T-G-G” in MPHOSPH6 showed a harmful factor for the HBV-induced HCC (P<0.05). The results suggested that ACYP2 and MPHOSPH6 as the plausible candidate genes may predict the risk of HCC after chronic HBV infection in Chinese Han population, and further investigations in studies with a larger sample size and other races are needed to validate our findings. These data provide a theoretical foundation for future studies of this correlation between the polymorphisms of ACYP2 and MPHOSPH6 genes and the HCC in chronic HBV carriers.
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Affiliation(s)
- Yingai Zhang
- Central Laboratory, Haikou People's Hospital, Central South University Xiangya School of Medicine Affiliated Haikou Hospital, Haikou 570208, Hainan, China
| | - Shunlan Wang
- Central Laboratory, Haikou People's Hospital, Central South University Xiangya School of Medicine Affiliated Haikou Hospital, Haikou 570208, Hainan, China
| | - Xiaohong Wen
- Central Laboratory, Haikou People's Hospital, Central South University Xiangya School of Medicine Affiliated Haikou Hospital, Haikou 570208, Hainan, China
| | - Shufang Zhang
- Central Laboratory, Haikou People's Hospital, Central South University Xiangya School of Medicine Affiliated Haikou Hospital, Haikou 570208, Hainan, China
| | - Yijun Yang
- Department of Hepatobiliary Surgery, Haikou People's Hospital, Central South University Xiangya School of Medicine Affiliated Haikou Hospital, Haikou 570208, Hainan, China
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15
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Bellon M, Nicot C. Telomere Dynamics in Immune Senescence and Exhaustion Triggered by Chronic Viral Infection. Viruses 2017; 9:v9100289. [PMID: 28981470 PMCID: PMC5691640 DOI: 10.3390/v9100289] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 09/28/2017] [Accepted: 09/29/2017] [Indexed: 02/06/2023] Open
Abstract
The progressive loss of immunological memory during aging correlates with a reduced proliferative capacity and shortened telomeres of T cells. Growing evidence suggests that this phenotype is recapitulated during chronic viral infection. The antigenic volume imposed by persistent and latent viruses exposes the immune system to unique challenges that lead to host T-cell exhaustion, characterized by impaired T-cell functions. These dysfunctional memory T cells lack telomerase, the protein capable of extending and stabilizing chromosome ends, imposing constraints on telomere dynamics. A deleterious consequence of this excessive telomere shortening is the premature induction of replicative senescence of viral-specific CD8+ memory T cells. While senescent cells are unable to expand, they can survive for extended periods of time and are more resistant to apoptotic signals. This review takes a closer look at T-cell exhaustion in chronic viruses known to cause human disease: Epstein–Barr virus (EBV), Hepatitis B/C/D virus (HBV/HCV/HDV), human herpesvirus 8 (HHV-8), human immunodeficiency virus (HIV), human T-cell leukemia virus type I (HTLV-I), human papillomavirus (HPV), herpes simplex virus-1/2 (HSV-1/2), and Varicella–Zoster virus (VZV). Current literature linking T-cell exhaustion with critical telomere lengths and immune senescence are discussed. The concept that enduring antigen stimulation leads to T-cell exhaustion that favors telomere attrition and a cell fate marked by enhanced T-cell senescence appears to be a common endpoint to chronic viral infections.
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Affiliation(s)
- Marcia Bellon
- Department of Pathology, Center for Viral Pathogenesis, University of Kansas Medical Center, Kansas City, KS 66160, USA.
| | - Christophe Nicot
- Department of Pathology, Center for Viral Pathogenesis, University of Kansas Medical Center, Kansas City, KS 66160, USA.
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16
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Cheng Y, Yu C, Huang M, Du F, Song C, Ma Z, Zhai X, Yang Y, Liu J, Bei JX, Jia W, Jin G, Li S, Zhou W, Liu J, Dai J, Hu Z. Genetic association of telomere length with hepatocellular carcinoma risk: A Mendelian randomization analysis. Cancer Epidemiol 2017; 50:39-45. [PMID: 28797893 DOI: 10.1016/j.canep.2017.07.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2017] [Revised: 07/21/2017] [Accepted: 07/24/2017] [Indexed: 12/13/2022]
Abstract
BACKGROUND Observational studies show an association between telomere length and Hepatocellular carcinoma (HCC) risk, but the relationship is controversial. Particularly, it remains unclear whether the association is due to confounding or biases inherent in conventional epidemiological studies. Here, we applied Mendelian randomization approach to evaluate whether telomere length is causally associated with HCC risk. METHODS Individual-level data were from HBV-related HCC Genome-wide association studies (1,538 HBV positive HCC patients and 1,465 HBV positive controls). Genetic risk score, as proxy for actual measured telomere length, derived from nine telomere length-associated genetic variants was used to evaluate the effect of telomere length on HCC risk. RESULTS We observed a significant risk signal between genetically increased telomere length and HBV-related HCC risk (OR=2.09, 95% CI 1.32-3.31, P=0.002). Furthermore, a U-shaped curve was fitted by the restricted cubic spline curve, which indicated that either short or long telomere length would increase HCC risk (P=0.0022 for non-linearity test). Subgroup analysis did not reveal significant heterogeneity between different age, gender, smoking status and drinking status groups. CONCLUSIONS Our results indicated that a genetic background that favors longer or shorter telomere length may increase HBV-related HCC risk-a U-shaped association.
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Affiliation(s)
- Yue Cheng
- Department of Epidemiology and Biostatistics, Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center For Cancer Personalized Medicine, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Chengxiao Yu
- Department of Epidemiology and Biostatistics, Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center For Cancer Personalized Medicine, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Mingtao Huang
- Department of Epidemiology and Biostatistics, Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center For Cancer Personalized Medicine, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Fangzhi Du
- Department of Epidemiology and Biostatistics, Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center For Cancer Personalized Medicine, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Ci Song
- Department of Epidemiology and Biostatistics, Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center For Cancer Personalized Medicine, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Zijian Ma
- Department of Epidemiology and Biostatistics, Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center For Cancer Personalized Medicine, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Xiangjun Zhai
- Department of Infectious Diseases, Jiangsu Province Center for Disease Prevention and Control, Nanjing, China
| | - Yuan Yang
- Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Jibin Liu
- Tumor Biobank, Nantong Tumor Hospital, Nantong, China
| | - Jin-Xin Bei
- Department of Hepatobiliary Oncology, State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Weihua Jia
- Department of Hepatobiliary Oncology, State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Guangfu Jin
- Department of Epidemiology and Biostatistics, Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center For Cancer Personalized Medicine, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Shengping Li
- Department of Hepatobiliary Oncology, State Key Laboratory of Oncology in South China, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Weiping Zhou
- Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Jianjun Liu
- Department of Human Genetics, Genome Institute of Singapore, A*STAR, Singapore, Singapore
| | - Juncheng Dai
- Department of Epidemiology and Biostatistics, Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center For Cancer Personalized Medicine, School of Public Health, Nanjing Medical University, Nanjing 211166, China.
| | - Zhibin Hu
- Department of Epidemiology and Biostatistics, Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center For Cancer Personalized Medicine, School of Public Health, Nanjing Medical University, Nanjing 211166, China.
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17
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Mons U, Müezzinler A, Schöttker B, Dieffenbach AK, Butterbach K, Schick M, Peasey A, De Vivo I, Trichopoulou A, Boffetta P, Brenner H. Leukocyte Telomere Length and All-Cause, Cardiovascular Disease, and Cancer Mortality: Results From Individual-Participant-Data Meta-Analysis of 2 Large Prospective Cohort Studies. Am J Epidemiol 2017; 185:1317-1326. [PMID: 28459963 DOI: 10.1093/aje/kww210] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Accepted: 04/27/2016] [Indexed: 12/13/2022] Open
Abstract
We studied the associations of leukocyte telomere length (LTL) with all-cause, cardiovascular disease, and cancer mortality in 12,199 adults participating in 2 population-based prospective cohort studies from Europe (ESTHER) and the United States (Nurses' Health Study). Blood samples were collected in 1989-1990 (Nurses' Health Study) and 2000-2002 (ESTHER). LTL was measured by quantitative polymerase chain reaction. We calculated z scores for LTL to standardize LTL measurements across the cohorts. Cox proportional hazards regression models were used to calculate relative mortality according to continuous levels and quintiles of LTL z scores. The hazard ratios obtained from each cohort were subsequently pooled by meta-analysis. Overall, 2,882 deaths were recorded during follow-up (Nurses' Health Study, 1989-2010; ESTHER, 2000-2015). LTL was inversely associated with age in both cohorts. After adjustment for age, a significant inverse trend of LTL with all-cause mortality was observed in both cohorts. In random-effects meta-analysis, age-adjusted hazard ratios for the shortest LTL quintile compared with the longest were 1.23 (95% confidence interval (CI): 1.04, 1.46) for all-cause mortality, 1.29 (95% CI: 0.83, 2.00) for cardiovascular mortality, and 1.10 (95% CI: 0.88, 1.37) for cancer mortality. In this study population with an age range of 43-75 years, we corroborated previous evidence suggesting that LTL predicts all-cause mortality beyond its association with age.
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Affiliation(s)
- Ute Mons
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center, Heidelberg, Germany
| | - Aysel Müezzinler
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center, Heidelberg, Germany
- Network Aging Research, University of Heidelberg, Heidelberg, Germany
| | - Ben Schöttker
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center, Heidelberg, Germany
- Network Aging Research, University of Heidelberg, Heidelberg, Germany
| | - Aida Karina Dieffenbach
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center, Heidelberg, Germany
- German Cancer Consortium, Heidelberg, Germany
| | - Katja Butterbach
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center, Heidelberg, Germany
| | - Matthias Schick
- Genomics and Proteomics Core Facility, German Cancer Research Center, Heidelberg, Germany
| | - Anne Peasey
- Department of Epidemiology and Public Health, Faculty of Population Health Sciences, University College London, London, United Kingdom
| | - Immaculata De Vivo
- Channing Laboratory, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
- Program in Genetic Epidemiology and Statistical Genetics, Harvard School of Public Health, Boston, Massachusetts
| | - Antonia Trichopoulou
- Hellenic Health Foundation, Athens, Greece
- Department of Hygiene, Epidemiology and Medical Statistics, Medical School, University of Athens, Athens, Greece
| | - Paolo Boffetta
- Hellenic Health Foundation, Athens, Greece
- Institute for Translational Epidemiology and Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Hermann Brenner
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center, Heidelberg, Germany
- Network Aging Research, University of Heidelberg, Heidelberg, Germany
- German Cancer Consortium, Heidelberg, Germany
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18
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Zinkova A, Brynychova I, Svacina A, Jirkovska M, Korabecna M. Cell-free DNA from human plasma and serum differs in content of telomeric sequences and its ability to promote immune response. Sci Rep 2017; 7:2591. [PMID: 28572683 PMCID: PMC5453964 DOI: 10.1038/s41598-017-02905-8] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Accepted: 04/20/2017] [Indexed: 12/23/2022] Open
Abstract
Circulating cell-free DNA (cfDNA) may be involved in immune response regulation. We studied the variations in abundance of telomeric sequences in plasma and serum in young healthy volunteers and the ability of cfDNA contained in these samples to co-activate the TNF-α m RNA expression in monocytes. We performed qPCR to determine relative telomere length (T/S ratios) in plasma, serum and whole blood of 36 volunteers. Using paired samples of plasma and serum and DNase treatment, we analysed the contribution of cfDNA to the co-activation of TNF-α mRNA expression in THP1 monocytic cell line. We found significant differences between paired plasma and serum samples in relative T/S ratios (median 1.38 ± 1.1 vs. 0.86 ± 0.25, respectively) and in total amounts of cfDNA and in estimated total amounts of telomeres which were significantly higher in serum than in plasma. TNF-α mRNA expression in THP1 cells increased significantly after DNase treatment of all samples used for stimulation. The highest TNF-α mRNA expressions were observed after stimulation with DNase treated serum samples. Our results suggest that the different content of telomeric sequences in plasma and serum may contribute to the tuning of immune response. Further studies of this interesting phenomenon are needed.
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Affiliation(s)
- Alzbeta Zinkova
- Department of Biology and Medical Genetics, First Faculty of Medicine, Charles University and General Faculty Hospital in Prague, Albertov 4, 128 00, Prague, Czech Republic
| | - Iva Brynychova
- Department of Anthropology and Human Genetics, Faculty of Science, Charles University, Vinicna 7, 128 43, Prague, Czech Republic
| | - Alexander Svacina
- Department of Biology and Medical Genetics, First Faculty of Medicine, Charles University and General Faculty Hospital in Prague, Albertov 4, 128 00, Prague, Czech Republic
| | - Marie Jirkovska
- Department of Histology and Embryology, First Faculty of Medicine, Charles University, Albertov 4, 128 00, Prague, Czech Republic
| | - Marie Korabecna
- Department of Biology and Medical Genetics, First Faculty of Medicine, Charles University and General Faculty Hospital in Prague, Albertov 4, 128 00, Prague, Czech Republic.
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19
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Howell JA, Khan SA, Knapp S, Thursz MR, Sharma R. The clinical role of circulating free tumor DNA in gastrointestinal malignancy. Transl Res 2017; 183:137-154. [PMID: 28056336 DOI: 10.1016/j.trsl.2016.12.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 10/14/2016] [Accepted: 12/06/2016] [Indexed: 02/06/2023]
Abstract
Circulating cell-free DNA (cfDNA) is DNA released from necrotic or apoptotic cells into the bloodstream. While both healthy cells and cancer cells release cfDNA, tumors are associated with higher levels of tumor-derived circulating cell-free DNA (ctDNA) detectable in blood. Absolute levels of ctDNA and its genetic mutations and epigenetic changes show promise as potentially useful biomarkers of tumor biology, progression, and response to therapy. Moreover, studies have demonstrated the discriminative accuracy of ctDNA levels for diagnosis of gastrointestinal cancer compared with benign inflammatory diseases. Therefore, ctDNA detected in blood offers a minimally invasive and easily repeated "liquid biopsy" of cancer, facilitating real-time dynamic analysis of tumor behavior that could revolutionize both clinical and research practices in oncology. In this review, we provide a critical summary of the evidence for the utility of ctDNA as a diagnostic and prognostic biomarker in gastrointestinal malignancies.
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Affiliation(s)
- Jessica A Howell
- Department of Hepatology, St Mary's Hospital, Imperial College, London, UK; Centre for Population Health, MacFarlane-Burnet Institute, Melbourne, Australia; Department of Medicine, The University of Melbourne, Melbourne, Australia.
| | - Shahid A Khan
- Department of Hepatology, St Mary's Hospital, Imperial College, London, UK
| | - Susanne Knapp
- Department of Hepatology, St Mary's Hospital, Imperial College, London, UK
| | - Mark R Thursz
- Department of Hepatology, St Mary's Hospital, Imperial College, London, UK
| | - Rohini Sharma
- Department of Surgery and Cancer, Hammersmith Hospital, Imperial College, London, UK
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20
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Wan S, Hann HW, Ye Z, Hann RS, Lai Y, Wang C, Li L, Myers RE, Li B, Xing J, Yang H. Prospective and longitudinal evaluations of telomere length of circulating DNA as a risk predictor of hepatocellular carcinoma in HBV patients. Carcinogenesis 2017; 38:439-446. [PMID: 28334112 PMCID: PMC5963496 DOI: 10.1093/carcin/bgx021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 02/01/2017] [Accepted: 02/21/2017] [Indexed: 02/06/2023] Open
Abstract
Prospective and longitudinal epidemiological evidence is needed to assess the association between telomere length and risk of hepatocellular carcinoma (HCC). In 323 cancer-free Korean-American HBV patients with 1-year exclusion window (followed for >1 year and did not develop HCC within 1 year), we measured the relative telomere length (RTL) in baseline serum DNAs and conducted extensive prospective and longitudinal analyses to assess RTL-HCC relationship. We found that long baseline RTL conferred an increased HCC risk compared to short RTL [hazard ratio (HR) = 4.93, P = 0.0005). The association remained prominent when the analysis was restricted to patients with a more stringent 5-year exclusion window (HR = 7.51, P = 0.012), indicating that the association was unlikely due to including undetected HCC patients in the cohort, thus minimizing the reverse-causation limitation in most retrospective studies. Adding baseline RTL to demographic variables increased the discrimination accuracy of the time-dependent receiver operating characteristic analysis from 0.769 to 0.868 (P = 1.0 × 10-5). In a nested longitudinal subcohort of 16 matched cases-control pairs, using a mixed effects model, we observed a trend of increased RTL in cases and decreased RTL in controls along 5 years of follow-up, with a significant interaction of case/control status with time (P for interaction=0.002) and confirmed the association between long RTL and HCC risk [odds ratio [OR] = 3.63, P = 0.016]. In summary, serum DNA RTL may be a novel non-invasive prospective marker of HBV-related HCC. Independent studies are necessary to validate and generalize this finding in diverse populations and assess the clinical applicability of RTL in HCC prediction.
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Affiliation(s)
- Shaogui Wan
- Division of Population Science, Department of Medical Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107, USA
- Institute of Pharmacy, Pharmaceutical College, Henan University, Kaifeng, Henan 475004, China
| | - Hie-Won Hann
- Department of Medicine, Liver Disease Prevention Center, Thomas Jefferson University, Philadelphia, PA 19107, USA
- Division of Gastroenterology and Hepatology, Department of Medicine, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Zhong Ye
- Division of Population Science, Department of Medical Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Richard S Hann
- Department of Medicine, Liver Disease Prevention Center, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Yinzhi Lai
- Division of Population Science, Department of Medical Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Chun Wang
- Division of Population Science, Department of Medical Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Ling Li
- Division of Population Science, Department of Medical Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Ronald E Myers
- Division of Population Science, Department of Medical Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Bingshan Li
- Department of Molecular Physiology and Biophysics, Center for Human Genetics Research, Vanderbilt University, Nashville, TN 37232, USA and
| | - Jinliang Xing
- State Key Laboratory of Cancer Biology and Experimental Teaching Center, College of Basic Medicine, Fourth Military Medical University, Xi'an 710032, China
| | - Hushan Yang
- Division of Population Science, Department of Medical Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107, USA
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21
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Paired assessment of liver telomere lengths in hepatocellular cancer is a reliable predictor of disease persistence. Biosci Rep 2017; 37:BSR20160621. [PMID: 28108675 PMCID: PMC5350599 DOI: 10.1042/bsr20160621] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2016] [Revised: 01/22/2017] [Accepted: 01/24/2017] [Indexed: 02/06/2023] Open
Abstract
In the present study, we used a small series of highly defined patients, where we had matched timed peripheral blood samples (PBS), as well as paired liver biopsies obtained during collection of blood samples from patients with diagnosed hepatocellular carcinoma (HCC) and compared the correlation between the changes of telomere lengths in these defined samples. Patients included had either HCC alone or in conjunction with either pre-existing hepatitis B virus (HBV) or hepatitis C virus (HCV) infection. PCR-based assay incorporating primers to the telomeric hexamer repeats to polymerize and detect telomeric DNA was used. The average telomere length for each independent assessment was measured by seeing the differences in the intensity of the sample’s telomere signal (T) to the signal from a single-copy gene (S-, β-globin) to estimate the standard ratio. Our results provide the first convincing evidence that PBS may be utilized to assay telomere shortening as a predictor for disease persistence in HCC resulting after HBV or HCV infection, but not in non-infectious cause-stimulated HCC. These findings provide incipient opportunity to develop telomere length assessment as a biomarker tool for prediction of HCC in patients with HBV or HCV infection, as well as to gauge responses to chemotherapy and other treatment modalities.
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22
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Zeng H, Wu HC, Wang Q, Yang HI, Chen CJ, Santella RM, Shen J. Telomere Length and Risk of Hepatocellular Carcinoma: A Nested Case-control Study in Taiwan Cancer Screening Program Cohort. Anticancer Res 2017; 37:637-644. [PMID: 28179311 DOI: 10.21873/anticanres.11358] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 12/22/2016] [Accepted: 12/30/2016] [Indexed: 11/10/2022]
Abstract
BACKGROUND Telomere length (TL) measured in peripheral blood leucocytes (PBL) might be a useful biomarker to identify elevated cancer risk. PATIENTS AND METHODS A case-control study which included 268 newly-diagnosed HCC cases and 536 matched controls, was conducted. Absolute TL in PBL was analyzed by quantitative real-time PCR. RESULTS The overall median length of TL was not statistically shorter in HCC cases compared to healthy controls. However, we found a significant synergistic effect of longer TL and HCV infection to increase HCC risk with a relative excess risk of 6.86 (95% CI: 2.14-11.58). Among HCC cases, significant shorter TLs were observed for <5 years (OR=3.93, 95% CI: 2.00-7.72); 5-10 years (OR=2.16, 95% CI: 1.10-4.24) compared to >10 years prior to diagnosis. CONCLUSION Shorter PBL TL alone was not significantly associated with increased HCC risk. Among HCC cases, significant shorter TLs were observed for <5 years prior to diagnosis.
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Affiliation(s)
- Hui Zeng
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University Medical Center, New York City, NY, U.S.A.,Department of Environmental Hygiene, College of Preventive Medicine, Third Military Medical University, Chongqing, P.R. China
| | - Hui-Chen Wu
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University Medical Center, New York City, NY, U.S.A
| | - Qiao Wang
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University Medical Center, New York City, NY, U.S.A
| | - Hwai-I Yang
- Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan, R.O.C.,Molecular and Genomic Epidemiology Center, China Medical University Hospital, Taichung, Taiwan, R.O.C.,Genomics Research Center, Academia Sinica, Taipei, Taiwan, R.O.C
| | - Chien-Jen Chen
- Genomics Research Center, Academia Sinica, Taipei, Taiwan, R.O.C.,Graduate Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan, R.O.C
| | - Regina M Santella
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University Medical Center, New York City, NY, U.S.A
| | - Jing Shen
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University Medical Center, New York City, NY, U.S.A.
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23
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Ma Q, Cai J, Cai Y, Xu Y, Chang F, Xu L, Zhang G, Guo X. Association of telomere length in peripheral leukocytes with chronic hepatitis B and hepatocellular carcinoma. Medicine (Baltimore) 2016; 95:e4970. [PMID: 27684844 PMCID: PMC5265937 DOI: 10.1097/md.0000000000004970] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND & OBJECTIVES Telomere plays a critical role in the maintenance of genomic stability in eukaryotic chromosomes. More and more findings have shown that alteration in telomere length may involve in normal somatic cells and some diseases, however, whether the telomere length is associated with the development and/or progression of hepatic diseases remains poorly understood. METHODS A case-control study was employed to illustrate the correlation of relative telomere length (RTL) with chronic hepatitis B (CHB) and hepatocellular carcinoma (HCC). In this study, 152 patients with HCC, 212 patients with CHB, and 184 healthy controls were recruited. Genomic deoxyribonucleic acid (DNA) was extracted from the peripheral blood leukocytes, and fluorescence quantitative polymerase chain reaction (FQ-PCR) was used to detect telomere repeated numbers and 36B4 copy numbers. The RTL was calculated by telomere repeat copy number to single-copy gene number ratio in each sample compared with a reference DNA sample. RESULTS We found that the RTL in HCC group was the longest, followed by CHB group, and healthy control group was the shortest, showing significant statistical differences. When participants were categorized into longer and shorter group according to medium value in healthy controls, individuals who had longer RTL had a significant increased risk of CHB (odds ratio [OR]: 1.83, 95% confidence interval [CI]: 1.22-2.73) when the healthy control was used as the reference groups; furthermore, longer RTL also showed higher incidence of HCC (OR: 3.22, 95% CI: 2.01-5.17; OR: 1.58, 95% CI:1.03-2.41) when healthy control and CHB were used as the reference groups, respectively. When participants were categorized further into 4 groups according to quartile values of RTL in healthy controls, it showed that the longest RTL was also associated with an increased risk of CHB (OR: 2.09, 95% CI: 1.17-3.74) and HCC (OR: 4.31, 95% CI: 2.18-8.52; OR: 2.86, 95% CI: 1.53-5.34) when control and control/CHB group were used as the reference groups, respectively. CONCLUSION Our results suggest that the alteration of telomere length in peripheral leukocytes might be involved in the hepatitis B virus infection and HCC events, and RTL might be a potential useful predictor of CHB and HCC.
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Affiliation(s)
- Qiang Ma
- Department of Laboratory Medicine, Affiliated Hospital of North Sichuan Medical College
- Translational Medicine Research Center, North Sichuan Medical College, Nanchong, Sichuan, China
| | - Jiajing Cai
- Department of Laboratory Medicine, Affiliated Hospital of North Sichuan Medical College
- Translational Medicine Research Center, North Sichuan Medical College, Nanchong, Sichuan, China
| | - Yan Cai
- Department of Laboratory Medicine, Affiliated Hospital of North Sichuan Medical College
- Translational Medicine Research Center, North Sichuan Medical College, Nanchong, Sichuan, China
| | - Yuan Xu
- Translational Medicine Research Center, North Sichuan Medical College, Nanchong, Sichuan, China
| | - Fan Chang
- Department of Laboratory Medicine, Affiliated Hospital of North Sichuan Medical College
| | - Lei Xu
- Department of Laboratory Medicine, Affiliated Hospital of North Sichuan Medical College
| | - Guoyuan Zhang
- Department of Laboratory Medicine, Affiliated Hospital of North Sichuan Medical College
- Translational Medicine Research Center, North Sichuan Medical College, Nanchong, Sichuan, China
| | - Xiaolan Guo
- Department of Laboratory Medicine, Affiliated Hospital of North Sichuan Medical College
- Translational Medicine Research Center, North Sichuan Medical College, Nanchong, Sichuan, China
- Correspondence: Xiaolan Guo, Department of Laboratory Medicine, Affiliated Hospital of North Sichuan Medical College, 63 Wenhua Road, Nanchong 637000, Sichuan, China (e-mail: )
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Bao D, Ba Y, Zhou F, Zhao J, Yang Q, Ge N, Guo X, Wu Z, Zhang H, Yang H, Wan S, Xing J. Alterations of telomere length and mtDNA copy number are associated with overall survival in hepatocellular carcinoma patients treated with transarterial chemoembolization. Cancer Chemother Pharmacol 2016; 78:791-9. [PMID: 27558242 DOI: 10.1007/s00280-016-3128-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 08/04/2016] [Indexed: 12/28/2022]
Abstract
PURPOSE Increasing evidence suggests that alterations in mitochondrial DNA (mtDNA) copy number (mtDNAcn) and relative telomere length (RTL) may be implicated in the tumorigenesis of several malignancies. Alterations of both RTL and mtDNAcn are generally accepted as independent biomarkers for predicting risk and prognosis in various cancers. The aim of this study was to evaluate the prognostic value of combining leukocyte RTL with mtDNAcn (RTL-mtDNAcn) in hepatocellular carcinoma (HCC). METHODS RTL and mtDNAcn in peripheral blood leukocytes (PBLs) were measured using a real-time PCR-based method in a total of 250 HCC patients treated with transcatheter arterial chemoembolization (TACE). We evaluated the associations between RTL and/or mtDNAcn and HCC overall survival using Kaplan-Meier curve analysis and Cox proportional hazards regression model. RESULTS We found that patients with longer leukocyte RTL or lower mtDNAcn had shorter overall survival time. The univariate analysis (HR 1.63, 95 % CI 1.23-2.17, P = 7.7 × 10(-4)) and multivariate analysis (HR 1.78, 95 % CI 1.31-2.42, P = 2.4 × 10(-4)) indicated that longer leukocyte RTL was significantly associated with poorer OS in HCC patients. Kaplan-Meier curve analysis showed that patients with longer RTL had shorter overall survival time than those with shorter RTL (log-rank P = 0.001). Patients with lower mtDNA copy number was significantly associated with poorer OS by Cox proportional hazards model using both univariate (HR 1.60, 95 % CI 1.21-2.13, P = 0.001) and multivariate analyses (HR 1.77, 95 % CI 1.30-2.41, P = 2.8 × 10(-4)). Kaplan-Meier curve analysis showed that patients with lower mtDNA content had significantly shorter overall survival time than those with higher mtDNA content (log-rank P = 0.001). Furthermore, combination of leukocyte RTL and mtDNAcn significantly improved the efficacy of predicting HCC prognosis. Patients with longer RTL and lower mtDNAcn exhibited a significantly poorer overall survival in both the univariate analysis (HR 2.21, 95 % CI 1.52-3.22, P = 3.5 × 10(-5)) and multivariate analysis (HR 2.60, 95 % CI 1.73-3.90, P = 4.3 × 10(-6)). The effect on patient prognosis was more evident in patients with longer RTL and lower mtDNAcn than in those with shorter RTL and lower mtDNA (HR 2.11, 95 % CI 1.34-3.32, P = 0.001) or in those with longer RTL and higher mtDNA (HR 2.10, 95 % CI 1.34-3.27, P = 0.001). CONCLUSIONS Our data suggest that combination of leukocyte RTL-mtDNAcn may be a potential efficient prognostic marker for HCC patients receiving the TACE treatment.
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Affiliation(s)
- Dengke Bao
- Institute of Pharmacy, Pharmaceutical College of Henan University, Kaifeng, 475004, Henan, China
| | - Yanna Ba
- Department of Clinical Immunology, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, Shanxi, China
| | - Feng Zhou
- Department of General Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, 710032, Shanxi, China
| | - Jing Zhao
- Institute of Pharmacy, Pharmaceutical College of Henan University, Kaifeng, 475004, Henan, China
| | - Qi Yang
- Institute of Pharmacy, Pharmaceutical College of Henan University, Kaifeng, 475004, Henan, China
| | - Naijian Ge
- Department of Radioactive Intervention, Eastern Hepatobiliary Surgery Hospital, The Second Military Medical University, Shanghai, China
| | - Xu Guo
- State Key Laboratory of Cancer Biology, Experimental Teaching Center of Basic Medicine, Fourth Military Medical University, 169 Changle West Road, Xi'an, 710032, Shanxi, China
| | - Zhenbiao Wu
- Department of Clinical Immunology, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, Shanxi, China
| | - Hongxin Zhang
- Department of Pain Treatment, Tangdu Hospital, Fourth Military Medical University, Xi'an, 710038, Shanxi, China
| | - Hushan Yang
- Division of Population Science, Department of Medical Oncology, Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, 19107, USA
| | - Shaogui Wan
- Institute of Pharmacy, Pharmaceutical College of Henan University, Kaifeng, 475004, Henan, China.
| | - Jinliang Xing
- State Key Laboratory of Cancer Biology, Experimental Teaching Center of Basic Medicine, Fourth Military Medical University, 169 Changle West Road, Xi'an, 710032, Shanxi, China.
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Tang JC, Feng YL, Guo T, Xie AY, Cai XJ. Circulating tumor DNA in hepatocellular carcinoma: trends and challenges. Cell Biosci 2016; 6:32. [PMID: 27182434 PMCID: PMC4866298 DOI: 10.1186/s13578-016-0100-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 05/02/2016] [Indexed: 12/18/2022] Open
Abstract
Molecular characterization of individual patients’ tumor cells is becoming increasingly important in offering effective treatment for patients in clinical practice. Recent advances in the field have indicated that circulating tumor DNA (ctDNA) has huge potential to serve as a biomarker for early detection and precision treatment as well as prognosis of hepatocellular carcinoma (HCC). As ctDNA in HCC patients harbors the molecular characteristics of HCC tumor cells, ctDNA analysis in the blood may be sufficient for convenient, non-invasive and accurate detection, providing information for HCC diagnosis, treatment and prognosis. In this review, we will summarize and discuss current trends and challenges of ctDNA application in HCC.
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Affiliation(s)
- Jia-Cheng Tang
- Zhejiang Province Key Laboratory of Laparoscopic Technology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, People's Republic of China
| | - Yi-Li Feng
- Zhejiang Province Key Laboratory of Laparoscopic Technology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, People's Republic of China ; Institute of Translational Medicine, Zhejiang University, Hangzhou, People's Republic of China
| | - Tao Guo
- Zhejiang Province Key Laboratory of Laparoscopic Technology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, People's Republic of China ; Institute of Translational Medicine, Zhejiang University, Hangzhou, People's Republic of China
| | - An-Yong Xie
- Zhejiang Province Key Laboratory of Laparoscopic Technology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, People's Republic of China ; Institute of Translational Medicine, Zhejiang University, Hangzhou, People's Republic of China
| | - Xiu-Jun Cai
- Zhejiang Province Key Laboratory of Laparoscopic Technology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, People's Republic of China
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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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27
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The association between telomere length and cancer risk in population studies. Sci Rep 2016; 6:22243. [PMID: 26915412 PMCID: PMC4768100 DOI: 10.1038/srep22243] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 01/25/2016] [Indexed: 12/19/2022] Open
Abstract
Telomeres are crucial in the maintenance of chromosome integrity and genomic stability. A series of epidemiological studies have examined the association between telomere length and the risk of cancers, but the findings remain conflicting. We performed literature review and meta-analysis to demonstrate the relationship between telomere length and cancer risk. A total of 23,379 cases and 68,792 controls from 51 publications with 62 population studies were included in this meta-analysis to assess the association between overall cancer or cancer-specific risk and telomere length. General association and dose-response relationship were evaluated based on two and three groups, respectively. The estimates of association were evaluated with odds ratios and 95% confidence intervals by the random-effects or fixed-effects model based on heterogeneity test. We observed a non-significant association between short telomeres and overall risk of cancer. Convincing evidence was observed for the association of short telomeres with an increased risk of gastrointestinal tumor and head and neck cancer. Significant dose-response associations were also observed for gastrointestinal tumor and head and neck cancer. Our findings indicate that telomeres may play diverse roles in different cancers, and short telomeres may be risk factors for the tumors of digestive system.
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Howell JA, Sharma R. The clinical role of 'liquid biopsy' in hepatocellular carcinoma. Hepat Oncol 2015; 3:45-55. [PMID: 30191026 DOI: 10.2217/hep.15.38] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 09/28/2015] [Indexed: 12/11/2022] Open
Abstract
Circulating free tumor DNA (ctDNA) is DNA released from necrotic or apoptotic tumor cells into the bloodstream. Absolute levels of ctDNA, as well as genetic mutations and epigenetic changes detected in ctDNA are useful biomarkers of tumor biology, progression and response to therapy in many tumor types and recent evidence suggests they may be useful in hepatocellular carcinoma (HCC). ctDNA detected in blood, therefore, offers a minimally invasive, easily repeated 'liquid biopsy' of cancer, providing real-time dynamic analysis of tumor behavior and treatment response that could revolutionize both clinical and research practice in HCC. In this review, we provide a critical summary of the evidence for the utility of ctDNA as a diagnostic and prognostic biomarker in HCC.
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Affiliation(s)
- Jessica A Howell
- Department of Hepatology, St Mary's Hospital, Imperial College, London, UK.,Centre for Population Health, MacFarlane-Burnet Institute, Melbourne, Australia.,Department of Medicine, The University of Melbourne, Melbourne, Australia.,Department of Hepatology, St Mary's Hospital, Imperial College, London, UK.,Centre for Population Health, MacFarlane-Burnet Institute, Melbourne, Australia.,Department of Medicine, The University of Melbourne, Melbourne, Australia
| | - Rohini Sharma
- Department of Oncology, Hammersmith Hospital, Imperial College, London, UK.,Department of Oncology, Hammersmith Hospital, Imperial College, London, UK
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Wei R, DeVilbiss FT, Liu W. Genetic Polymorphism, Telomere Biology and Non-Small Lung Cancer Risk. J Genet Genomics 2015; 42:549-561. [PMID: 26554909 DOI: 10.1016/j.jgg.2015.08.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Revised: 08/03/2015] [Accepted: 08/10/2015] [Indexed: 02/06/2023]
Abstract
Recent genome-wide association studies (GWAS) have identified a number of chromosomal regions associated with the risk of lung cancer. Of these regions, single-nucleotide polymorphisms (SNPs), especially rs2736100 located in the telomerase reverse transcriptase (TERT) gene show unique and significant association with non-small cell lung cancer (NSCLC) in a few subpopulations including women, nonsmokers, East Asians and those with adenocarcinoma. Recent studies have also linked rs2736100 with a longer telomere length and lung cancer risk. In this review, we seek to summarize the relationship between these factors and to further link the underlying telomere biology to lung cancer etiology. We conclude that genetic alleles combined with environmental (e.g., less-smoking) and physiological factors (gender and age) that confer longer telomere length are strong risk factors for NSCLC. This linkage may be particularly relevant in lung adenocarcinoma driven by epidermal growth factor receptor (EGFR) mutations, as these mutations have also been strongly linked to female gender, less-smoking history, adenocarcinoma histology and East Asian ethnicity. By establishing this connection, a strong argument is made for further investigating of the involvement of these entities during the tumorigenesis of NSCLC.
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Affiliation(s)
- Rongrong Wei
- Department of Medicinal Chemistry and Molecular Pharmacology, College of Pharmacy, Purdue University, West Lafayette, IN 47907, USA
| | - Frank T DeVilbiss
- School of Chemical Engineering, Purdue University, West Lafayette, IN 47907, USA
| | - Wanqing Liu
- Department of Medicinal Chemistry and Molecular Pharmacology, College of Pharmacy, Purdue University, West Lafayette, IN 47907, USA.
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Müezzinler A, Mons U, Dieffenbach AK, Butterbach K, Saum KU, Schick M, Stammer H, Boukamp P, Holleczek B, Stegmaier C, Brenner H. Smoking habits and leukocyte telomere length dynamics among older adults: Results from the ESTHER cohort. Exp Gerontol 2015; 70:18-25. [PMID: 26255046 DOI: 10.1016/j.exger.2015.07.002] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Revised: 04/30/2015] [Accepted: 07/06/2015] [Indexed: 01/15/2023]
Abstract
BACKGROUND & AIMS Leukocyte telomere length (LTL) shortens with age and short LTL has been associated with increased mortality and increased risk for some age-related outcomes. This study aims to analyse the associations of smoking habits with LTL and rate of LTL change per year in older adults. METHODS LTL was measured by quantitative PCR at baseline in 3600 older adults, who were enrolled in a population-based cohort study in Germany. For longitudinal analyses, measurements were repeated in blood samples obtained at 8-year follow-up from 1000 participants. Terminal Restriction Fragment analysis was additionally performed in a sub-sample to obtain absolute LTL in base pairs. Multivariate linear regression models were used to estimate associations of smoking habits with baseline LTL and changes in LTL over time. RESULTS LTL was inversely associated with age (r=-0.090, p<0.0001). Women had longer LTL than men (p<0.0001). Smoking was inversely associated with LTL. On average, current smokers had 73 base pairs (BP) shorter LTL compared to never smokers. Smoking intensity and pack-years of smoking were also inversely associated with LTL, and a positive association was observed with years since smoking cessation. Slower LTL attrition rates were observed in ever smokers over 8years of follow-up. CONCLUSIONS Our cross-sectional analysis supports suggestions that smoking might contribute to shortening of LTL but this relationship could not be shown longitudinally. The overall rather small effect sizes observed for smoking-related variables suggest that LTL reflects smoking-related health hazards only to a very limited extent.
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Affiliation(s)
- Aysel Müezzinler
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 581, 69120 Heidelberg, Germany; Network Aging Research (NAR), University of Heidelberg, Heidelberg, Germany
| | - Ute Mons
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 581, 69120 Heidelberg, Germany.
| | - Aida Karina Dieffenbach
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 581, 69120 Heidelberg, Germany; German Cancer Consortium (DKTK), Heidelberg, Germany
| | - Katja Butterbach
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 581, 69120 Heidelberg, Germany
| | - Kai-Uwe Saum
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 581, 69120 Heidelberg, Germany
| | - Matthias Schick
- Genomics and Proteomics Core Facility, German Cancer Research Center, Im Neuenheimer Feld 580, 69120 Heidelberg, Germany
| | - Hermann Stammer
- Division of Genetics of Skin Carcinogenesis, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
| | - Petra Boukamp
- Division of Genetics of Skin Carcinogenesis, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
| | - Bernd Holleczek
- Saarland Cancer Registry, Präsident-Baltz-Straße 5, 66119 Saarbrücken, Germany
| | - Christa Stegmaier
- Saarland Cancer Registry, Präsident-Baltz-Straße 5, 66119 Saarbrücken, Germany
| | - Hermann Brenner
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 581, 69120 Heidelberg, Germany
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Wang C, Hann HW, Hann RS, Wan S, Myers RE, Ye Z, Xing J, Yang H. Circulating mitochondrial DNA content associated with the risk of liver cirrhosis: a nested case-control study. Dig Dis Sci 2015; 60:1707-15. [PMID: 25588520 DOI: 10.1007/s10620-015-3523-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Accepted: 01/05/2015] [Indexed: 02/07/2023]
Abstract
BACKGROUND AND AIMS Accumulating evidence has indicated that variations of mitochondrial DNA (mtDNA) content may affect the susceptibility to hepatocellular carcinoma (HCC). However, no study has been conducted to evaluate the association of circulating mtDNA content and the risk of liver cirrhosis, a leading cause of HCC. METHODS We conducted a nested case-control study including 136 cirrhotic hepatitis B virus (HBV) cases and 136 frequency-matched non-cirrhotic HBV controls. We determined mtDNA content in serum DNA using quantitative real-time PCR and analyzed its association with cirrhosis risk. RESULTS We found that cirrhotic HBV patients had significantly lower levels of mtDNA content than non-cirrhotic HBV controls (P = 0.0184). Compared to patients with high mtDNA content, those with low mtDNA content had a 2.25-fold increased risk of cirrhosis [odds ratio (OR) 2.25, 95 % confidence interval (CI) 1.26-4.02]. This association exhibited a significant dose relationship as evidenced in both tertile and quartile analyses (P for trend = 0.0018 and 0.0008, respectively). Stratified analyses showed that the association was prominent in younger patients (P = 0.0122), males (P = 0.0069), never smokers (P = 0.0063), never drinkers (P = 0.0078), patients with a family history of HBV infection (P = 0.0062), and patients with low values of aspartate aminotransferase to platelet ratio index (APRI), a commonly used noninvasive marker for cirrhosis (P = 0.0109). Moreover, a joint effect was observed between low mtDNA content and high APRI values on cirrhosis risk (OR 24.07, 95 % CI 6.72-86.24). CONCLUSIONS Low circulating mtDNA content may confer an increased cirrhosis risk in HBV patients. Further prospective studies are warranted to validate these findings and explore the clinical significance.
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Affiliation(s)
- Chun Wang
- Division of Population Science, Department of Medical Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, USA
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Abstract
About 80% of hepatocellular carcinoma (HCC) is caused by hepatitis B virus (HBV) and/or hepatitis C virus (HCV) infections especially in the setting of established cirrhosis or advanced fibrosis, making HCC prevention a major goal of antiviral therapy. HCC tumors are highly complex and heterogeneous resulting from the aberrant function of multiple molecular pathways. The roles of HCV or HBV in promoting HCC development are still either directly or indirectly are still speculative, but the evidence for both effects is compelling. In patients with chronic hepatitis viral infection, cirrhosis is not a prerequisite for tumorigenesis.
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Affiliation(s)
- Ziv Ben Ari
- Liver Disease Center, Sheba Medical Center, Derech Sheba No 1, Ramat Gan 52621, Israel; Liver Research Laboratory, Sheba Medical Center, Ramat Gan, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv 69978, Israel.
| | - Ella Weitzman
- Liver Disease Center, Sheba Medical Center, Derech Sheba No 1, Ramat Gan 52621, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Michal Safran
- Liver Disease Center, Sheba Medical Center, Derech Sheba No 1, Ramat Gan 52621, Israel; Liver Research Laboratory, Sheba Medical Center, Ramat Gan, Israel
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Soluble CD163 is associated with shortened telomere length in HIV-infected patients. J Acquir Immune Defic Syndr 2015; 67:414-418. [PMID: 25197827 DOI: 10.1097/qai.0000000000000329] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Telomere length (TL) and immune activation markers were measured in a cohort of HIV-infected (n = 102) and age-matched non-HIV-infected (n = 41) men. TL was significantly shorter in HIV-infected compared with non-HIV-infected subjects (P = 0.04). Univariate analysis revealed a strong inverse relationship of TL to sCD163, and thus, monocyte/macrophage activation, among the HIV group (ρ = -0.30, P = 0.003). In multivariate modeling among the whole group, HIV-positive serostatus (P = 0.06) and sCD163 (P = 0.05) remained predictors of TL controlling for age and smoking status. Our data demonstrate that increased immune activation relates to shorter TL in HIV.
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Hann HW, Wan S, Lai Y, Hann RS, Myers RE, Patel F, Zhang K, Ye Z, Wang C, Yang H. Aspartate aminotransferase to platelet ratio index as a prospective predictor of hepatocellular carcinoma risk in patients with chronic hepatitis B virus infection. J Gastroenterol Hepatol 2015; 30:131-138. [PMID: 24995497 PMCID: PMC4418451 DOI: 10.1111/jgh.12664] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/19/2014] [Indexed: 12/14/2022]
Abstract
BACKGROUND AND AIM APRI (aspartate aminotransferase [AST] to platelet ratio index) is widely used to assess fibrosis and cirrhosis risk, especially in hepatitis C virus (HCV)-infected patients. Few studies have evaluated APRI and hepatitis B virus (HBV)-related hepatocellular carcinoma (HCC) risk. Prospective evidence is needed to assess whether APRI predicts HCC risk in HBV patients. METHOD In a prospectively enrolled clinical cohort of 855 HBV patients with a 1-year exclusion window (followed for > 1 year and did not develop HCC within 1 year), the predictive value of APRI in HCC risk was evaluated by Cox proportional hazards model using univariate and multivariate analyses and longitudinal analysis. RESULTS Higher APRI prospectively conferred a significantly increased risk of HCC in univariate analysis (quartile analysis, P trend = 2.9 × 10(-7) ). This effect remained highly significant after adjusting for common host characteristics but not cirrhosis (P trend = 7.1 × 10(-5) ), and attenuated when cirrhosis is adjusted (P trend = 0.021). The effect remained prominent when the analysis was restricted to patients with a more stringent 2-year exclusion window (P trend = 0.008 in quartile analysis adjusting all characteristics including cirrhosis), indicating that the association was unlikely due to including undetected HCC patients in the cohort, thus minimizing the reverse-causation limitation in most retrospective studies. Longitudinal comparison demonstrated a persistently higher APRI value in HBV patients who developed HCC during follow-up than those remaining cancer free. CONCLUSION APRI might be a marker of HCC risk in HBV patients in cirrhosis-dependent and -independent manners. Further studies are warranted to validate this finding and test its clinical applicability in HCC prevention.
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Affiliation(s)
- Hie-Won Hann
- Liver Disease Prevention Center, Division of Gastroenterology and Hepatology, Department of Medicine
| | - Shaogui Wan
- Division of Population Science, Department of Medical Oncology, Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107, USA.
,Institute of Pharmacy, Pharmaceutical College of Henan University, Kaifeng, Henan 475004, China
| | - Yinzhi Lai
- Division of Population Science, Department of Medical Oncology, Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Richard S. Hann
- Liver Disease Prevention Center, Division of Gastroenterology and Hepatology, Department of Medicine
| | - Ronald E. Myers
- Division of Population Science, Department of Medical Oncology, Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Fenil Patel
- Division of Population Science, Department of Medical Oncology, Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Kejin Zhang
- Division of Population Science, Department of Medical Oncology, Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Zhong Ye
- Division of Population Science, Department of Medical Oncology, Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Chun Wang
- Division of Population Science, Department of Medical Oncology, Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Hushan Yang
- Division of Population Science, Department of Medical Oncology, Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107, USA.
,Correspondence to: Division of Population Science, Department of Medical Oncology, Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107 (Tel: 215-503-6521, Fax: 267-336-0247),
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Bouomrani S, Kilani I, Nouma H, Slama A, Beji M. [Non fibrolamellar hepatocellular carcinoma on a healthy liver]. Pan Afr Med J 2014; 18:155. [PMID: 25419293 PMCID: PMC4236843 DOI: 10.11604/pamj.2014.18.155.2762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Accepted: 12/21/2013] [Indexed: 01/10/2023] Open
Abstract
Le carcinome hépatocellulaire (CHC) survient le plus souvent sur foie de cirrhose. Sa survenue sur un foie sain est exceptionnelle et pose un véritable défit diagnostique pour le clinicien. Nous rapportons l'observation d'un patient de 53 ans, sans antécédents pathologiques notables qui fût admis pour exploration d'une douleur de l'hypochondre droit évoluant depuis quelques mois avec une exacerbation récente, associée à un amaigrissement important et une altération de l’état général. L'examen clinique notait une hépatomégalie ferme et douloureuse. L’échographie abdominale montrait une masse hétérogène du secteur latéral droit du foie faisant 10 cm de grand axe. La TDM abdominale montrait une masse tissulaire, hétérogène, à vascularisation artérielle importante, mesurant 10 cm de diamètre et occupant le secteur latéral droit du foie. Cette tumeur comprime la branche portale droite sans signes d'extension. Il n'y avait pas d'adénopathie ni d’épanchement intra abdominal. La ponction biopsique écho-guidée avait conclu à un CHC non fibrolamellaire. Le bilan biologique, en particulier les transaminases, le taux de prothrombine, l’électrophorèse des protéines sanguine et l'alpha foeto-protéine, était sans anomalies. Les sérologies de l'hépatites virales B et C ainsi que la recherche des auto anticorps spécifiques des hépatites auto immunes et le bilan cuprique étaient aussi négatives. Vue l’âge, le stade avancé de la tumeur et l'altération de l’état général la conduite thérapeutique était de s'abstenir.
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Affiliation(s)
- Salem Bouomrani
- Service de Médecine Interne, Hôpital Militaire de Gabes 6000, Tunisie
| | - Ichrak Kilani
- Service de Gastroentérologie, Hôpital Militaire de Gabès 6000, Tunisie
| | - Hanène Nouma
- Service de Médecine Interne, Hôpital Militaire de Gabes 6000, Tunisie
| | - Alaeddine Slama
- Service de Médecine Interne, Hôpital Militaire de Gabes 6000, Tunisie
| | - Maher Beji
- Service de Médecine Interne, Hôpital Militaire de Gabes 6000, Tunisie
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Gall TMH, Frampton AE, Krell J, Habib NA, Castellano L, Stebbing J, Jiao LR. Cell-free DNA for the detection of pancreatic, liver and upper gastrointestinal cancers: has progress been made? Future Oncol 2014; 9:1861-9. [PMID: 24295416 DOI: 10.2217/fon.13.152] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Detecting alterations in blood cell-free DNA (cfDNA) is hoped to be a novel, noninvasive method for diagnosing, prognosing and monitoring cancer patients. Several studies have assessed the usefulness of measuring tumor-specific genetic and epigenetic changes of cfDNA, such as loss of heterozygosity, frequency of mutations, alterations of microsatellites and the methylation of genes in patient blood samples. However, few well-designed trials have been carried out to translate these findings effectively. In this review, we have assessed the clinical utility of cfDNA in pancreatic, liver and upper gastrointestinal malignancies.
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Affiliation(s)
- Tamara M H Gall
- HPB Surgical Unit, Department of Surgery & Cancer, Imperial College, Hammersmith Hospital Campus, Du Cane Road, London, W12 0HS, UK
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Sanchez-Espiridion B, Chen M, Chang JY, Lu C, Chang DW, Roth JA, Wu X, Gu J. Telomere length in peripheral blood leukocytes and lung cancer risk: a large case-control study in Caucasians. Cancer Res 2014; 74:2476-86. [PMID: 24618342 PMCID: PMC4357479 DOI: 10.1158/0008-5472.can-13-2968] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Telomere dysfunction is a crucial event in malignant transformation and tumorigenesis. Telomere length in peripheral blood leukocytes has been associated with lung cancer risk, but the relationship has remained controversial. In this study, we investigated whether the association might be confounded by study of different histological subtypes of lung cancer. We measured relative telomere lengths in patients in a large case-control study of lung cancer and performed stratified analyses according to the two major histologic subtypes [adenocarcinoma and squamous cell carcinoma (SCC)]. Notably, patients with adenocarcinoma had longer telomeres than controls, whereas patients with SCC had shorter telomeres compared with controls. Long telomeres were associated with increased risk of adenocarcinoma, with the highest risk associated with female sex, younger age (<60 years), and lighter smoking (<30 pack-years). In contrast, long telomeres were protective against SCC, particularly in male patients. Our results extend the concept that telomere length affects risk of lung cancer in a manner that differs with histologic subtype.
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Affiliation(s)
| | - Meng Chen
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Joe Y. Chang
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Charles Lu
- Department of Thoracic/Head and Neck Medical Oncology, 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
| | - Jack A. Roth
- Department of Thoracic and Cardiovascular Surgery, 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
| | - Jian Gu
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, Texas
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Yang J, Jiao S. Increased lung cancer risk associated with the TERT rs2736100 polymorphism: an updated meta-analysis. Tumour Biol 2014; 35:5763-9. [PMID: 24590268 DOI: 10.1007/s13277-014-1765-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2013] [Accepted: 02/17/2014] [Indexed: 10/25/2022] Open
Abstract
The rs2736100 polymorphism in the telomerase reverse transcriptase (TERT) gene has been implicated in lung cancer risk in multiple populations, but the existing evidence lacks statistical power to draw a convincing conclusion. Therefore, the present study was devised to derive a more precise estimation of the association between rs2736100 and lung cancer risk. The PubMed, Embase, and Web of Science databases were comprehensively searched for papers concerning lung cancer risk in relation to rs2736100. Pooled odds ratios (ORs) and the 95 % confidence intervals (CIs) were appropriately calculated using the fixed or random effects model. Meta-analysis of 20 independent studies involving 39,715 cancer cases and 61,462 control subjects showed statistical evidence for an association between rs2736100 and increased risk of lung cancer. Subgroup analysis by ethnicity demonstrated a significant association among both Asian and Caucasian populations. We additionally found an increased risk of non-small cell lung cancer and lung adenocarcinoma strongly associated with rs2736100. These data provide further evidence supporting a role for genetic susceptibility of TERT rs2736100 in the development of lung cancer.
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Affiliation(s)
- Jihua Yang
- Department of Oncology, Chinese PLA General Hospital, 28# Fuxing Road, Haidian District, Beijing, 100853, People's Republic of China
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39
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Telomeres in molecular epidemiology studies. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2014; 125:113-31. [PMID: 24993700 DOI: 10.1016/b978-0-12-397898-1.00005-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Telomeres are long nucleotide repeats and protein complexes at the ends of chromosomes that are essential for maintaining chromosomal stability. They shorten with each cell division, and therefore, telomere length is a marker for cellular aging and senescence. Epidemiological research of telomeres investigates the role that these genetic structures have in disease risk and mortality in human populations. This chapter provides an overview of the current telomere epidemiology research and discusses approaches taken in these investigations. We also highlight important methodological considerations that may affect data interpretation.
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Wang S, Chen Y, Qu F, He S, Huang X, Jiang H, Jin T, Wan S, Xing J. Association between leukocyte telomere length and glioma risk: a case-control study. Neuro Oncol 2013; 16:505-12. [PMID: 24366909 DOI: 10.1093/neuonc/not240] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Compelling epidemiological evidence indicates that alterations of telomere length are associated with risks of many malignancies in a tumor-specific manner, such as lung cancer, breast cancer, and non-Hodgkin's lymphoma. However, the association between leukocyte telomere length and glioma risk has not been investigated. METHODS Relative telomere length (RTL) of peripheral blood leukocytes from 467 glioma patients and 467 healthy controls, matched by age and sex, was measured using the real-time PCR-based method in a case-control study. An unconditional multivariate logistic regression model was applied to estimate the association between RTL and glioma risk. RESULTS Glioma patients showed notably longer RTL than controls (median, 0.555 vs 0.444; P > .04). RTL was negatively correlated with age in both cases (ρ = -0.430; P < .001) and controls (ρ = -0.388; P < .001). After adjusting for age, sex, smoking status and family history of cancer, multivariate logistic regression analysis showed that there was a U-shaped association between RTL and glioma risk (P for nonlinearity <.001). Compared with individuals in the second tertile of RTL, the odds ratios (95% CI) for participants in the first and third tertiles were 2.16 (range, 1.52-3.09) and 3.51 (range, 2.45-5.00), respectively. Stratified analysis showed that the association between RTL and glioma risk was not modulated by major host characteristics. CONCLUSIONS Our study demonstrates for the first time that either shorter or longer RTL in peripheral blood leukocytes is associated with increased glioma risk, which warrants further investigation in the future.
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Affiliation(s)
- Shaolong Wang
- Department of Oncology, First Affiliated Hospital of Chengdu Medical College, Chengdu, China (S.W., H.J.); State Key Laboratory of Cancer Biology and Experimental Teaching Center of Basic Medicine, Xi'an, China (Y.C., F.Q., X.H., J.X.); Department of Neurosurgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, China (S.H.); National Engineering Research Center for Miniaturized Detection Systems, School of Life Sciences, Northwest University, Xi'an, China (T.J.); Division of Population Science, Department of Medical Oncology, Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania (S.W.)
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Basu N, Skinner HG, Litzelman K, Vanderboom R, Baichoo E, Boardman LA. Telomeres and telomere dynamics: relevance to cancers of the GI tract. Expert Rev Gastroenterol Hepatol 2013; 7:733-48. [PMID: 24161135 PMCID: PMC3892561 DOI: 10.1586/17474124.2013.848790] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Aberrations in telomere length and telomere maintenance contribute to cancer development. In this article, we review the basic principles of telomere length in normal and tumor tissue and the presence of the two main telomere maintenance pathways as they pertain to gastrointestinal tract cancer. Peripheral blood telomeres are shorter in patients with many types of gastrointestinal tract cancers. Telomere length in tumor DNA also appears to shorten early in cancer development. Tumor telomere shortening is often accompanied by telomerase activation to protect genetically damaged DNA from normal cell senescence or apoptosis, allowing immortalized but damaged DNA to persist. Alternative lengthening of telomeres is another mechanism used by cancer to maintain telomere length in cancer cells. Telomerase and alternative lengthening of telomeres activators and inhibitors may become important chemopreventive or chemotherapeutic agents as our understanding of telomere biology, specific telomere-related phenotypes and its relationship to carcinogenesis increases.
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Affiliation(s)
- Nivedita Basu
- Division of Gastroenterology and Hepatology Department of Medicine Mayo Clinic 200 First Street SW Rochester, MN 55905 Tel: 507-266-4338; Fax: 507-266-0350
| | - Halcyon G. Skinner
- Department of Population Health Sciences School of Medicine and Public Health University of Wisconsin Madison, WI 53726 Tel: 608-265-4654
| | - Kristin Litzelman
- Department of Population Health Sciences School of Medicine and Public Health University of Wisconsin Madison, WI 53726 Tel: 608-265-4654
| | - Russell Vanderboom
- Division of Gastroenterology and Hepatology Department of Medicine Mayo Clinic 200 First Street SW Rochester, MN 55905 Tel: 507-266-4338; Fax: 507-266-0350
| | - Esha Baichoo
- Division of Gastroenterology and Hepatology Department of Medicine Mayo Clinic 200 First Street SW Rochester, MN 55905 Tel: 507-266-4338; Fax: 507-266-0350
| | - Lisa A. Boardman
- Division of Gastroenterology and Hepatology Department of Medicine Mayo Clinic 200 First Street SW Rochester, MN 55905 Tel: 507-266-4338; Fax: 507-266-0350
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Wong KF, Xu Z, Chen J, Lee NP, Luk JM. Circulating markers for prognosis of hepatocellular carcinoma. ACTA ACUST UNITED AC 2013; 7:319-29. [DOI: 10.1517/17530059.2013.795146] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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43
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Lan Q, Cawthon R, Gao Y, Hu W, Hosgood HD, Barone-Adesi F, Ji BT, Bassig B, Chow WH, Shu X, Cai Q, Xiang Y, Berndt S, Kim C, Chanock S, Zheng W, Rothman N. Longer telomere length in peripheral white blood cells is associated with risk of lung cancer and the rs2736100 (CLPTM1L-TERT) polymorphism in a prospective cohort study among women in China. PLoS One 2013; 8:e59230. [PMID: 23555636 PMCID: PMC3608613 DOI: 10.1371/journal.pone.0059230] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Accepted: 02/12/2013] [Indexed: 11/18/2022] Open
Abstract
A recent genome-wide association study of lung cancer among never-smoking females in Asia demonstrated that the rs2736100 polymorphism in the TERT-CLPTM1L locus on chromosome 5p15.33 was strongly and significantly associated with risk of adenocarcinoma of the lung. The telomerase gene TERT is a reverse transcriptase that is critical for telomere replication and stabilization by controlling telomere length. We previously found that longer telomere length measured in peripheral white blood cell DNA was associated with increased risk of lung cancer in a prospective cohort study of smoking males in Finland. To follow up on this finding, we carried out a nested case-control study of 215 female lung cancer cases and 215 female controls, 94% of whom were never-smokers, in the prospective Shanghai Women’s Health Study cohort. There was a dose-response relationship between tertiles of telomere length and risk of lung cancer (odds ratio (OR), 95% confidence interval [CI]: 1.0, 1.4 [0.8–2.5], and 2.2 [1.2–4.0], respectively; P trend = 0.003). Further, the association was unchanged by the length of time from blood collection to case diagnosis. In addition, the rs2736100 G allele, which we previously have shown to be associated with risk of lung cancer in this cohort, was significantly associated with longer telomere length in these same study subjects (P trend = 0.030). Our findings suggest that individuals with longer telomere length in peripheral white blood cells may have an increased risk of lung cancer, but require replication in additional prospective cohorts and populations.
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Affiliation(s)
- Qing Lan
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, MD, USA.
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Cui M, Fan M, Jing R, Wang H, Qin J, Sheng H, Wang Y, Wu X, Zhang L, Zhu J, Ju S. Cell-Free circulating DNA: a new biomarker for the acute coronary syndrome. Cardiology 2013; 124:76-84. [PMID: 23363853 DOI: 10.1159/000345855] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2012] [Accepted: 11/08/2012] [Indexed: 01/18/2023]
Abstract
BACKGROUND In recent studies, concentrations of cell-free circulating DNA (cf-DNA) have been correlated with clinical characteristics and prognosis in several diseases. The relationship between cf-DNA concentrations and the acute coronary syndrome (ACS) remains unknown. Moreover, no data are available for the detection cf-DNA in ACS by a branched DNA (bDNA)-based Alu assay. The aim of the present study was to investigate cf-DNA concentrations in ACS and their relationship with clinical features. METHODS Plasma cf-DNA concentrations of 137 ACS patients at diagnosis, of 60 healthy individuals and of 13 patients with stable angina (SA) were determined using a bDNA-based Alu assay. RESULTS ACS patients (median 2,285.0, interquartile range 916.4-4,857.3 ng/ml), especially in ST-segment elevation myocardial infarction patients (median 5,745.4, interquartile range 4,013.5-8,643.9 ng/ml), showed a significant increase in plasma cf-DNA concentrations compared with controls (healthy controls: median 118.3, interquartile range 81.1-221.1 ng/ml; SA patients: median 202.3, interquartile range 112.7-256.1 ng/ml) using a bDNA-based Alu assay. Moreover, we found positive correlations between cf-DNA and Gensini scoring and GRACE (Global Registry of Acute Coronary Events) scoring in ACS. CONCLUSION cf-DNA may be a valuable marker for diagnosing and predicting the severity of coronary artery lesions and risk stratification in ACS.
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Affiliation(s)
- Ming Cui
- Center of Laboratory Medicine, Affiliated Hospital of Nantong University, Nantong, China
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