51
|
Lin Z, Changfu H, Fengling Z, Wei G, Lei B, Yiping L, Miao Z, Zhongzheng Y, Youliang Z, Shuyin D, Wu Y. Long non-coding RNA deep sequencing reveals the role of macrophage in liver disorders. Oncotarget 2017; 8:114966-114979. [PMID: 29383134 PMCID: PMC5777746 DOI: 10.18632/oncotarget.23154] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2017] [Accepted: 11/15/2017] [Indexed: 12/31/2022] Open
Abstract
Liver disorders such as hepatitis, cirrhosis and hepatocellular carcinoma are a series of the most life threatening diseases along with extensive inflammatory cellular infiltrations. Macrophage has been proved to be key regulators and initiators of inflammation, and long non-coding RNAs (lncRNAs) are recommended to play critical roles in the occurrence and development of a variety of diseases. To uncover the role of macrophage in liver disorders via lncRNA sequencing method, we first applied a lncRNA classification pipeline to identify 1247 lncRNAs represented on the Affymetrix Mouse Genome 430/430A 2.0 array. We then analyzed the lncRNA expression patterns in a set of previously published gene expression profiles of silica particle exposed macrophages and liver respectively, and identified and validated sets of differentially expressed lncRNAs shared by macrophages and liver. The functional enrichment analysis of these lncRNAs was processed on the basis of their expression signatures, three aspects including cis, trans and co-acting proteins were proposed. This is the first time to correlate macrophage with liver disorders via co-expressed lncRNAs. Our findings indicated that roles of macrophage in liver disorders were double-edged, the differentially expressed lncRNAs and their corresponding regulatory genes or proteins may serve as potential diagnostic biomarkers and therapeutic targets.
Collapse
Affiliation(s)
- Zhang Lin
- Department of Occupational and Environmental Health, School of Public Health, Zhengzhou University, Zhengzhou 450001, China.,Center for Reproductive Medicine, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250001, China.,Key Laboratory of Reproductive Endocrinology, Shandong University, Ministry of Education, National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Jinan 250001, China
| | - Hao Changfu
- Department of Occupational and Environmental Health, School of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Zhao Fengling
- Department of Occupational Disease, Henan Provincial Institute of Occupational Health, Zhengzhou 450052, China
| | - Guo Wei
- Department of Occupational Disease, Henan Provincial Institute of Occupational Health, Zhengzhou 450052, China
| | - Bao Lei
- Department of Occupational and Environmental Health, School of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Li Yiping
- Department of Occupational and Environmental Health, School of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Zhang Miao
- Department of Occupational and Environmental Health, School of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Yue Zhongzheng
- Department of Occupational and Environmental Health, School of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Zhao Youliang
- Department of Occupational and Environmental Health, School of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Duan Shuyin
- Department of Occupational and Environmental Health, School of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Yao Wu
- Department of Occupational and Environmental Health, School of Public Health, Zhengzhou University, Zhengzhou 450001, China
| |
Collapse
|
52
|
Ortega-Prieto AM, Dorner M. Immune Evasion Strategies during Chronic Hepatitis B and C Virus Infection. Vaccines (Basel) 2017; 5:E24. [PMID: 28862649 PMCID: PMC5620555 DOI: 10.3390/vaccines5030024] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 08/25/2017] [Accepted: 08/30/2017] [Indexed: 12/15/2022] Open
Abstract
Both hepatitis B virus (HBV) and hepatitis C virus (HCV) infections are a major global healthcare problem with more than 240 million and 70 million infected, respectively. Both viruses persist within the liver and result in progressive liver disease, resulting in liver fibrosis, cirrhosis and hepatocellular carcinoma. Strikingly, this pathogenesis is largely driven by immune responses, unable to clear an established infection, rather than by the viral pathogens themselves. Even though disease progression is very similar in both infections, HBV and HCV have evolved distinct mechanisms, by which they ensure persistence within the host. Whereas HCV utilizes a cloak-and-dagger approach, disguising itself as a lipid-like particle and immediately crippling essential pattern-recognition pathways, HBV has long been considered a "stealth" virus, due to the complete absence of innate immune responses during infection. Recent developments and access to improved model systems, however, revealed that even though it is among the smallest human-tropic viruses, HBV may, in addition to evading host responses, employ subtle immune evasion mechanisms directed at ensuring viral persistence in the absence of host responses. In this review, we compare the different strategies of both viruses to ensure viral persistence by actively interfering with viral recognition and innate immune responses.
Collapse
Affiliation(s)
| | - Marcus Dorner
- Section of Virology, Department of Medicine, Imperial College London, London W2 1PG, UK.
| |
Collapse
|
53
|
Proinflammatory Cytokines IL-6 and TNF- α Increased Telomerase Activity through NF- κB/STAT1/STAT3 Activation, and Withaferin A Inhibited the Signaling in Colorectal Cancer Cells. Mediators Inflamm 2017; 2017:5958429. [PMID: 28676732 PMCID: PMC5476880 DOI: 10.1155/2017/5958429] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Revised: 03/10/2017] [Accepted: 04/04/2017] [Indexed: 12/14/2022] Open
Abstract
There are increasing evidences of proinflammatory cytokine involvement in cancer development. Here, we found that two cytokines, IL-6 and TNF-α, activated colorectal cancer cells to be more invasive and stem-like. Combined treatment of IL-6 and TNF-α phosphorylated transcription factors STAT3 in a synergistic manner. STAT3, STAT1, and NF-κB physically interacted upon the cytokine stimulation. STAT3 was bound to the promoter region of human telomerase reverse transcriptase (hTERT). IL-6 and TNF-α stimulation further enhanced STAT3 binding affinity. Stem cell marker Oct-4 was upregulated in colorectal cancer cells upon IL-6 and TNF-α stimulation. Withaferin A, an anti-inflammatory steroidal lactone, inhibited the IL-6- and TNF-α-induced cancer cell invasion and decreased colonosphere formation. Notably, withaferin A inhibited STAT3 phosphorylation and abolished the STAT3, STAT1, and NF-κB interactions. Oct-4 expression was also downregulated by withaferin A inhibition. The binding of STAT3 to the hTERT promoter region and telomerase activity showed reduction with withaferin A treatments. Proinflammatory cytokine-induced cancer cell invasiveness is mediated by a STAT3-regulated mechanism in colorectal cancer cells. Our data suggest that withaferin A could be a promising anticancer agent that effectively inhibits the progression of colorectal cancer.
Collapse
|
54
|
Zhou Y, Zhao Y, Gao Y, Hu W, Qu Y, Lou N, Zhu Y, Zhang X, Yang H. Hepatitis C virus NS3 protein enhances hepatocellular carcinoma cell invasion by promoting PPM1A ubiquitination and degradation. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2017; 36:42. [PMID: 28283039 PMCID: PMC5345236 DOI: 10.1186/s13046-017-0510-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 02/23/2017] [Indexed: 01/03/2023]
Abstract
Background Growing evidence suggests that hepatitis C virus (HCV) contributes to hepatocellular carcinoma (HCC) by directly modulating oncogenic signaling pathways. Protein phosphatase magnesium-dependent 1A (PPM1A) has recently emerged as an important tumor suppressor as it can block a range of tumor-centric signaling pathways through protein dephosphorylation. However, the role and regulatory mechanisms of PPM1A in HCV-infected cells have not been reported. Methods Total, cytoplasmic, and nuclear PPM1A protein after HCV infection or overexpression of HCV nonstructural protein 3 (NS3) were detected by western blotting. The expression of PPM1A in normal liver and HCV-related HCC tissues was quantified by immunohistochemistry. The effects of HCV infection and NS3 expression on the PPM1A protein level were systematically analyzed, and the ubiquitination level of PPM1A was determined by precipitation with anti-PPM1A and immunoblotting with either anti-ubiquitin or anti-PPM1A antibody. Finally, the roles of NS3 and PPM1A in hepatoma cell migration and invasion were assessed by wound healing and transwell assays, respectively. Results HCV infection and replication decreased PPM1A abundance, mediated by NS3, in hepatoma cells. Compared to normal liver tissues, the expression of PPM1A was significantly decreased in the HCC tumor tissues and adjacent non-tumor tissues. NS3 directly interacted with PPM1A to promote PPM1A ubiquitination and degradation, which was dependent on its protease domain. Blockade of PPM1A through small interfering RNA significantly promoted HCC cell migration, invasion, and epithelial mesenchymal transition (EMT), which were further intensified by TGF-β1 stimulation, in vitro. Furthermore, restoration of PPM1A abrogated the NS3-mediated promotion of HCC migration and invasion to a great extent, which was dependent on its protein phosphatase function. Conclusions Our findings demonstrate that the HCV protein NS3 can downregulate PPM1A by promoting its ubiquitination and proteasomal degradation, which might contribute to the migration and invasion of hepatoma cells and may represent a new strategy of HCV in carcinogenesis. Electronic supplementary material The online version of this article (doi:10.1186/s13046-017-0510-8) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Yali Zhou
- Department of Pathogenic Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei Province, China
| | - Yan Zhao
- Department of Pathogenic Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei Province, China
| | - Yaoying Gao
- Department of Pathogenic Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei Province, China
| | - Wenjun Hu
- Department of Pathogenic Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei Province, China
| | - Yan Qu
- Department of Pathogenic Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei Province, China
| | - Ning Lou
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei Province, China
| | - Ying Zhu
- State Key Laboratory of Virology and College of Life Sciences, Wuhan University, Wuhan, 430072, Hubei Province, China
| | - Xiaoping Zhang
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei Province, China.
| | - Hongmei Yang
- Department of Pathogenic Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei Province, China.
| |
Collapse
|
55
|
Ganesan A, Barakat K. Applications of computer-aided approaches in the development of hepatitis C antiviral agents. Expert Opin Drug Discov 2017; 12:407-425. [PMID: 28164720 DOI: 10.1080/17460441.2017.1291628] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
INTRODUCTION Hepatitis C virus (HCV) is a global health problem that causes several chronic life-threatening liver diseases. The numbers of people affected by HCV are rising annually. Since 2011, the FDA has approved several anti-HCV drugs; while many other promising HCV drugs are currently in late clinical trials. Areas covered: This review discusses the applications of different computational approaches in HCV drug design. Expert opinion: Molecular docking and virtual screening approaches have emerged as a low-cost tool to screen large databases and identify potential small-molecule hits against HCV targets. Ligand-based approaches are useful for filtering-out compounds with rich physicochemical properties to inhibit HCV targets. Molecular dynamics (MD) remains a useful tool in optimizing the ligand-protein complexes and understand the ligand binding modes and drug resistance mechanisms in HCV. Despite their varied roles, the application of in-silico approaches in HCV drug design is still in its infancy. A more mature application should aim at modelling the whole HCV replicon in its active form and help to identify new effective druggable sites within the replicon system. With more technological advancements, the roles of computer-aided methods are only going to increase several folds in the development of next-generation HCV drugs.
Collapse
Affiliation(s)
- Aravindhan Ganesan
- a Faculty of Pharmacy and Pharmaceutical Sciences , University of Alberta , Edmonton , Canada
| | - Khaled Barakat
- a Faculty of Pharmacy and Pharmaceutical Sciences , University of Alberta , Edmonton , Canada
| |
Collapse
|
56
|
Wang B, Ye N, Cao SJ, Wen XT, Huang Y, Yan QG. Identification of novel and differentially expressed MicroRNAs in goat enzootic nasal adenocarcinoma. BMC Genomics 2016; 17:896. [PMID: 27825300 PMCID: PMC5101819 DOI: 10.1186/s12864-016-3238-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2016] [Accepted: 11/01/2016] [Indexed: 11/10/2022] Open
Abstract
Background MicroRNAs (miRNAs) post-transcriptionally regulate a variety of genes involved in eukaryotic cell growth, development, metabolism and other biological processes, and numerous miRNAs are implicated in the initiation and progression of cancer. Enzootic nasal adenocarcinoma (ENA), an epithelial tumor induced in goats and sheep by enzootic nasal tumor virus (ENTV), is a chronic, progressive, contact transmitted disease. Methods In this work, small RNA Illumina high-throughput sequencing was used to construct a goat nasal miRNA library. This study aimed to identify novel and differentially expressed miRNAs in the tumor and para-carcinoma nasal tissues of Nanjiang yellow goats with ENA. Results Four hundred six known miRNAs and 29 novel miRNAs were identified. A total of 116 miRNAs were significantly differentially expressed in para-carcinoma nasal tissues and ENA (54 downregulated; 60 upregulated; two only expressed in control group); Target gene prediction and functional analysis revealed that 6176 non-redundancy target genes, 1792 significant GO and 97 significant KEGG pathway for 121 miRNAs (116 significant expression miRNAs and five star sequence) were predicted. GO and KEGG pathway analysis revealed the majority of target genes in ENA are involved in cell proliferation, signal transduction and other processes associated with cancer. Conclusions This is the first large-scale identification of miRNAs in Capra hircus ENA and provides a theoretical basis for investigating the complicated miRNA-mediated regulatory networks involved in the pathogenesis and progression of ENA. Electronic supplementary material The online version of this article (doi:10.1186/s12864-016-3238-5) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Bin Wang
- College of Veterinary Medicine, Sichuan Agricultural University, Hui Min Road 211, Chengdu, Sichuan, 611130, People's Republic of China
| | - Ni Ye
- College of Veterinary Medicine, Sichuan Agricultural University, Hui Min Road 211, Chengdu, Sichuan, 611130, People's Republic of China
| | - San-Jie Cao
- College of Veterinary Medicine, Sichuan Agricultural University, Hui Min Road 211, Chengdu, Sichuan, 611130, People's Republic of China
| | - Xin-Tian Wen
- College of Veterinary Medicine, Sichuan Agricultural University, Hui Min Road 211, Chengdu, Sichuan, 611130, People's Republic of China
| | - Yong Huang
- College of Veterinary Medicine, Sichuan Agricultural University, Hui Min Road 211, Chengdu, Sichuan, 611130, People's Republic of China
| | - Qi-Gui Yan
- College of Veterinary Medicine, Sichuan Agricultural University, Hui Min Road 211, Chengdu, Sichuan, 611130, People's Republic of China.
| |
Collapse
|
57
|
Wang Y, Jiang Y, Zhou J, Song W, Li J, Wang M, Chen J, Xu R, Zhang J, Ma F, Chen YH, Ma Y. Hepatitis C virus promotes hepatocellular carcinogenesis by targeting TIPE2, a new regulator of DNA damage response. Tumour Biol 2016; 37:15265-15274. [PMID: 27696294 PMCID: PMC5126206 DOI: 10.1007/s13277-016-5409-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Accepted: 09/13/2016] [Indexed: 12/25/2022] Open
Abstract
Infection of hepatitis C virus (HCV) is associated with primary hepatocellular carcinoma (HCC). However, its underlying molecular mechanisms remain enigmatic. Tumor necrosis factor-α-induced protein 8-like 2 (TIPE2), a new negative regulator of immunity, plays significant roles in modulating inflammation and tumorigenesis. We hypothesized that TIPE2 might be involved in the development of HCV-induced HCC. To test this hypothesis, the expression of TIPE2 was determined by Western blot in the tumor and pericarcinomatous tissues collected from ten HCV-positive HCC patients; the interaction between TIPE2 and HCV-encoded non-structural proteins was analyzed by immunoprecipitation and immunofluorescence assays, and tumorigenesis and its mechanisms were studied in cell models and nude mice. Our results demonstrated that the expression of TIPE2 was significantly reduced in HCC tissues compared to that in the paracarcinoma tissues. HCV-encoded non-structural protein NS5A could specifically interact with TIPE2 and induce its degradation. Downregulation of TIPE2 by shRNA in cell lines increased genomic DNA damage and promoted cell colony formation in vitro and tumorigenesis in nude mice. In contrast, overexpression of TIPE2 had an opposite effect. Downregulation of TIPE2 by NS5A is associated with genomic DNA instability and HCV-induced HCC development. Thus, TIPE2 may be a new therapeutic target for the treatment of HCV-associated HCC.
Collapse
Affiliation(s)
- Yaohui Wang
- Henan Key Laboratory of Engineering Antibody Medicine, Medical College of Henan University, Kaifeng, Henan, 475004, China
| | - Yinan Jiang
- College of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Jinxue Zhou
- Zhengzhou University Affiliated Tumor Hospital, Zhengzhou, Henan, 450001, China
| | - Wuhui Song
- Key Laboratory of Medical Molecular Virology, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Jing Li
- Henan Key Laboratory of Engineering Antibody Medicine, Medical College of Henan University, Kaifeng, Henan, 475004, China
| | - Mingli Wang
- Henan Key Laboratory of Engineering Antibody Medicine, Medical College of Henan University, Kaifeng, Henan, 475004, China
| | - Jiuge Chen
- Henan Key Laboratory of Engineering Antibody Medicine, Medical College of Henan University, Kaifeng, Henan, 475004, China
| | - Rui Xu
- Henan Key Laboratory of Engineering Antibody Medicine, Medical College of Henan University, Kaifeng, Henan, 475004, China
| | - Jingjing Zhang
- Henan Key Laboratory of Engineering Antibody Medicine, Medical College of Henan University, Kaifeng, Henan, 475004, China
| | - Fanni Ma
- Henan Key Laboratory of Engineering Antibody Medicine, Medical College of Henan University, Kaifeng, Henan, 475004, China
| | - Youhai H Chen
- Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, 19104, USA
| | - Yuanfang Ma
- Henan Key Laboratory of Engineering Antibody Medicine, Medical College of Henan University, Kaifeng, Henan, 475004, China.
| |
Collapse
|
58
|
Kong L, Zhou Y, Bu H, Lv T, Shi Y, Yang J. Deletion of interleukin-6 in monocytes/macrophages suppresses the initiation of hepatocellular carcinoma in mice. J Exp Clin Cancer Res 2016; 35:131. [PMID: 27589954 PMCID: PMC5009700 DOI: 10.1186/s13046-016-0412-1] [Citation(s) in RCA: 110] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Accepted: 08/25/2016] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Hepatocellular carcinoma (HCC) is associated with inflammation, and roughly 30 % of the global population shows serological evidence of current or past infection with hepatitis B or hepatitis C virus. Resident hepatic macrophages, known as Kupffer cells (KCs), are considered as the specific tumor-associated macrophages (TAMs) of HCC, and can produce various cytokines-most importantly interleukin (IL)-6-to promote tumorigenesis of HCC. However, the roles of KCs and IL-6 in carcinogenesis in the liver are still unclear. METHODS We analyzed leukocyte-related peripheral blood data of 192 patients and constructed a mouse model in which the bone marrow was cleared out by irradiation and reconstructed using bone marrow donated from IL-6-deficient mice to further elucidate the hepatic pathological changes in response to toxic challenge and oncogenic gene mutation. RESULTS Peripheral monocyte counts and serum IL-6 levels were significantly higher in patients with HCC than in those without HCC. In addition, there was a significant difference in the levels of IL-6 among individuals with different histopathological grades. In mice with selective IL-6 ablation in monocytes/KCs, we observed decreased toxic liver injury, inflammatory infiltration, and systemic inflammation. In Mdr2-deficient mice, which spontaneously developed HCC, the loss of IL-6 in monocytes/KCs resulted in inhibition of IL-6/signal transducer and activator of transcription 3 signaling, decreased serum IL-6 levels, and delayed tumorigenesis. CONCLUSIONS Our findings demonstrate that increased TAM-derived IL-6 had an amplifying effect on the inflammation response, thereby promoting the occurrence and development of HCC.
Collapse
Affiliation(s)
- Lingxiang Kong
- Department of Hepato-Biliary-Pancreatic Surgery, West China Hospital of Sichuan University, Chengdu, 610041 China
| | - Yongjie Zhou
- Laboratory of Pathology, West China Hospital, Sichuan University, Chengdu, 610041 China
- Key Laboratory of Transplant Engineering and Immunology, Ministry of Health, Chengdu, 610041 China
| | - Hong Bu
- Laboratory of Pathology, West China Hospital, Sichuan University, Chengdu, 610041 China
- Key Laboratory of Transplant Engineering and Immunology, Ministry of Health, Chengdu, 610041 China
| | - Tao Lv
- Department of Hepato-Biliary-Pancreatic Surgery, West China Hospital of Sichuan University, Chengdu, 610041 China
| | - Yujun Shi
- Department of Hepato-Biliary-Pancreatic Surgery, West China Hospital of Sichuan University, Chengdu, 610041 China
- Laboratory of Pathology, West China Hospital, Sichuan University, Chengdu, 610041 China
| | - Jiayin Yang
- Department of Hepato-Biliary-Pancreatic Surgery, West China Hospital of Sichuan University, Chengdu, 610041 China
| |
Collapse
|
59
|
Divergent viral presentation among human tumors and adjacent normal tissues. Sci Rep 2016; 6:28294. [PMID: 27339696 PMCID: PMC4919655 DOI: 10.1038/srep28294] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Accepted: 05/26/2016] [Indexed: 12/13/2022] Open
Abstract
We applied a newly developed bioinformatics system called VirusScan to investigate the viral basis of 6,813 human tumors and 559 adjacent normal samples across 23 cancer types and identified 505 virus positive samples with distinctive, organ system- and cancer type-specific distributions. We found that herpes viruses (e.g., subtypes HHV4, HHV5, and HHV6) that are highly prevalent across cancers of the digestive tract showed significantly higher abundances in tumor versus adjacent normal samples, supporting their association with these cancers. We also found three HPV16-positive samples in brain lower grade glioma (LGG). Further, recurrent HBV integration at the KMT2B locus is present in three liver tumors, but absent in their matched adjacent normal samples, indicating that viral integration induced host driver genetic alterations are required on top of viral oncogene expression for initiation and progression of liver hepatocellular carcinoma. Notably, viral integrations were found in many genes, including novel recurrent HPV integrations at PTPN13 in cervical cancer. Finally, we observed a set of HHV4 and HBV variants strongly associated with ethnic groups, likely due to viral sequence evolution under environmental influences. These findings provide important new insights into viral roles of tumor initiation and progression and potential new therapeutic targets.
Collapse
|
60
|
Moreira JP, Malta FDM, Diniz MA, Kikuchi L, Chagas AL, Lima LDSB, Gomes-Gouvêa MS, de Castro VFD, Santana RAF, Sumita NM, Paranagua Vezozzo DC, Carrilho FJ, Pinho JRR. Interferon lambda and hepatitis C virus core protein polymorphisms associated with liver cancer. Virology 2016; 493:136-41. [PMID: 27035616 DOI: 10.1016/j.virol.2016.03.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Revised: 03/06/2016] [Accepted: 03/09/2016] [Indexed: 02/07/2023]
Abstract
BACKGROUND Hepatitis C virus (HCV) infection is often persistent and gradually advances from chronic hepatitis to liver cirrhosis and hepatocellular carcinoma (HCC). Worldwide, hepatocellular carcinoma is the fifth most common neoplasm. METHOD OF STUDY the Interferon lambda (IFNL) polymorphisms genotypes (rs8099917, rs12979860 and rs12980275) and the presence of mutations in HCV core protein were analyzed in 59 patients with HCC, and also in 50 cirrhotic patients (without HCC). RESULTS the rs12980275-AG genotype was associated with HCC on age-adjusted analysis (OR 2.42, 95% CI 1.03-5.69, P=0.043). Core substitutions R70Q and L91M were mainly found in genotype 1b isolates. Furthermore, a borderline level of statistical significance association was found among the presence of amino acid Glutamine (Q) in the position 70 and IFNL3 genotype AG (P=0.054). CONCLUSIONS the screening of these polymorphisms and functional studies would be useful in clinical practice for identifying groups at high risk of HCC development.
Collapse
Affiliation(s)
- João Paulo Moreira
- Laboratory of Tropical Gastroenterology and Hepatology "João Alves de Queiroz and Castorina Bittencourt Alves", LIM-07, Institute of Tropical Medicine, University of São Paulo, São Paulo, Brazil; Department of Gastroenterology, University of São Paulo, School of Medicine, São Paulo, Brazil
| | - Fernanda de Mello Malta
- Laboratory of Tropical Gastroenterology and Hepatology "João Alves de Queiroz and Castorina Bittencourt Alves", LIM-07, Institute of Tropical Medicine, University of São Paulo, São Paulo, Brazil; Department of Gastroenterology, University of São Paulo, School of Medicine, São Paulo, Brazil.
| | - Márcio Augusto Diniz
- Department of Gastroenterology, University of São Paulo, School of Medicine, São Paulo, Brazil; Samuel Oschin Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States
| | - Luciana Kikuchi
- Department of Gastroenterology, University of São Paulo, School of Medicine, São Paulo, Brazil
| | - Aline Lopes Chagas
- Department of Gastroenterology, University of São Paulo, School of Medicine, São Paulo, Brazil
| | - Livia de Souza Botelho Lima
- Laboratory of Tropical Gastroenterology and Hepatology "João Alves de Queiroz and Castorina Bittencourt Alves", LIM-07, Institute of Tropical Medicine, University of São Paulo, São Paulo, Brazil; Department of Gastroenterology, University of São Paulo, School of Medicine, São Paulo, Brazil
| | - Michele Soares Gomes-Gouvêa
- Laboratory of Tropical Gastroenterology and Hepatology "João Alves de Queiroz and Castorina Bittencourt Alves", LIM-07, Institute of Tropical Medicine, University of São Paulo, São Paulo, Brazil; Department of Gastroenterology, University of São Paulo, School of Medicine, São Paulo, Brazil
| | | | | | - Nairo Massakazu Sumita
- Central Laboratory Division of Hospital das Clínicas, University of São Paulo, School of Medicine, São Paulo, Brazil
| | | | - Flair José Carrilho
- Department of Gastroenterology, University of São Paulo, School of Medicine, São Paulo, Brazil
| | - João Renato Rebello Pinho
- Laboratory of Tropical Gastroenterology and Hepatology "João Alves de Queiroz and Castorina Bittencourt Alves", LIM-07, Institute of Tropical Medicine, University of São Paulo, São Paulo, Brazil; Department of Gastroenterology, University of São Paulo, School of Medicine, São Paulo, Brazil; Hospital Israelita Albert Einstein, São Paulo, Brazil
| |
Collapse
|
61
|
Huang X, Zhao J, Yang M, Li M, Zheng J. Association between FTO gene polymorphism (rs9939609 T/A) and cancer risk: a meta-analysis. Eur J Cancer Care (Engl) 2016; 26. [PMID: 26931363 DOI: 10.1111/ecc.12464] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/14/2016] [Indexed: 12/23/2022]
Abstract
Obesity is a risk factor of cancer. Several genes have been found to play an important role in aetiology of obesity and tumourigenesis. Recently, some studies suggested that rs9939609 polymorphism might be significantly associated with cancer risk, while the results of some other studies were controversial. Databases with time limitation from January 1984 to April 2015 were searched. The pooled odds ratio (OR) with 95% confidence interval was calculated to assess the associations, and subgroup meta-analyses were performed according to the type of cancer and ethnicity of the study populations. Overall, the significant association between rs9939609 polymorphism and cancer risk was found in homozygote model and recessive model. As to subgroup classified by cancer type, there was significant association in endometrial cancer and pancreatic cancer, while no statistical significance was detected in other kind of cancers. Besides, in the subgroup analysis of ethnicity, our results indicated that rs9939609 polymorphism was significantly associated with cancer risk in Asians. The rs9939609 polymorphism may be involved the susceptibility of endometrial cancer and pancreatic cancer, especially in Asian populations. Thus, rs9939609 may be a potential biomarker in early diagnosis or gene therapy target of endometrial cancer and pancreatic cancer.
Collapse
Affiliation(s)
- Xiaoyi Huang
- Department of Pathology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Jian Zhao
- Department of Orthopaedics, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Mingyuan Yang
- Department of Orthopaedics, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Ming Li
- Department of Orthopaedics, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Jianming Zheng
- Department of Pathology, Changhai Hospital, Second Military Medical University, Shanghai, China
| |
Collapse
|
62
|
Zhang Q, Wei L, Yang H, Yang W, Yang Q, Zhang Z, Wu K, Wu J. Bromodomain containing protein represses the Ras/Raf/MEK/ERK pathway to attenuate human hepatoma cell proliferation during HCV infection. Cancer Lett 2015; 371:107-16. [PMID: 26620707 DOI: 10.1016/j.canlet.2015.11.027] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2015] [Revised: 11/17/2015] [Accepted: 11/17/2015] [Indexed: 01/18/2023]
Abstract
Hepatitis C virus (HCV) infection facilitates the development of hepatocellular carcinoma (HCC). Activation of Ras/Raf/MEK/ERK pathway is found in more than 30% human cancers. Here, we revealed a novel mechanism underlying the regulation of hepatoma cell proliferation mediated by HCV. On one hand, hepatoma cell proliferation is facilitated by HCV infection through a positive feedback regulatory cycle. HCV promotes hepatoma cell proliferation by activating the Ras/Raf/MEK/ERK pathway, which in turn facilitates HCV replication to further enhance hepatoma cell proliferation. On the other hand, hepatoma cell proliferation is attenuated by the bromodomain containing 7 (BRD7), a tumor suppressor, through a negative feedback regulatory mechanism. After activation, the Ras/Raf/MEK/ERK pathway stimulates BRD7 production, which in turn represses the Ras/Raf/MEK/ERK pathway, leading to the attenuation of hepatoma cell proliferation. However, HCV persistent infection attenuates BRD7 gene expression and facilitates the protein degradation to release the Ras/Raf/MEK/ERK signaling, which results in the facilitation of hepatoma cell proliferation. Therefore, we proposed that the balance between BRD7 function and Ras/Raf/MEK/ERK activity is important for determining the outcomes of HCV infection and HCC development.
Collapse
Affiliation(s)
- Qi Zhang
- State Key Laboratory of Virology and College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Liang Wei
- State Key Laboratory of Virology and College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Hongchuan Yang
- State Key Laboratory of Virology and College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Wanqi Yang
- State Key Laboratory of Virology and College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Qingyu Yang
- State Key Laboratory of Virology and College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Zhuofan Zhang
- State Key Laboratory of Virology and College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Kailang Wu
- State Key Laboratory of Virology and College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Jianguo Wu
- State Key Laboratory of Virology and College of Life Sciences, Wuhan University, Wuhan 430072, China.
| |
Collapse
|
63
|
Wandrer F, Falk CS, John K, Skawran B, Manns MP, Schulze-Osthoff K, Bantel H. Interferon-Mediated Cytokine Induction Determines Sustained Virus Control in Chronic Hepatitis C Virus Infection. J Infect Dis 2015; 213:746-54. [PMID: 26503984 DOI: 10.1093/infdis/jiv505] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 10/08/2015] [Indexed: 12/14/2022] Open
Abstract
Hepatitis C virus (HCV) infection is a major cause of chronic liver disease and associated complications such as liver cirrhosis and hepatocellular carcinoma. Interferons (IFNs) are crucial for HCV clearance and a sustained virological response (SVR), but a significant proportion of patients do not respond to IFNα. The underlying mechanisms of an insufficient IFN response remain largely unknown. In this study, we found that patients responding to IFNα with viral clearance had significantly higher serum levels of TNF-related apoptosis inducing ligand (TRAIL), compared with patients who failed to control HCV. In addition, upon direct IFNα exposure, peripheral blood mononuclear cells (PBMCs) from patients with SVR upregulated TRAIL, as well as IFN-γ and the chemokines CXCL9 and CXCL10, much more strongly than cells from patients with antiviral treatment failure. As a possible mechanism of the stronger IFNα-induced cytokine response, we identified higher levels of expression and phosphorylation of the transcription factor STAT1 in PBMCs from patients with SVR. Increased TRAIL expression additionally involved the NF-κB and JNK signaling pathways. Thus, SVR in chronic HCV infection is associated with a strong IFNα-induced cytokine response, which might allow for the early prediction of treatment efficacy in HCV infection.
Collapse
Affiliation(s)
| | | | - Katharina John
- Department of Gastroenterology, Hepatology, and Endocrinology
| | - Britta Skawran
- Institute for Cell and Molecular Pathology, Hannover Medical School
| | - Michael P Manns
- Department of Gastroenterology, Hepatology, and Endocrinology
| | - Klaus Schulze-Osthoff
- Interfaculty Institute for Biochemistry, University of Tübingen German Cancer Consortium (DKTK)German Research Cancer Center (DKFZ), Heidelberg, Germany
| | - Heike Bantel
- Department of Gastroenterology, Hepatology, and Endocrinology
| |
Collapse
|
64
|
Komar AA, Hatzoglou M. Exploring Internal Ribosome Entry Sites as Therapeutic Targets. Front Oncol 2015; 5:233. [PMID: 26539410 PMCID: PMC4611151 DOI: 10.3389/fonc.2015.00233] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Accepted: 10/05/2015] [Indexed: 12/12/2022] Open
Abstract
Initiation of eukaryotic mRNA translation may proceed via several different routes, each requiring a different subset of factors and relying on different and specific interactions between the mRNA and the ribosome. Two modes predominate: (i) so-called cap-dependent initiation, which requires all canonical initiation factors and is responsible for about 95–97% of all initiation events in eukaryotic cells; and (ii) cap-independent internal initiation, which requires a reduced subset of initiation factors and accounts for up to 5% of the remaining initiation events. Internal initiation relies on the presence of so-called internal ribosome entry site (IRES) elements in the 5′ UTRs of some viral and cellular mRNAs. These elements (often possessing complex secondary and tertiary structures) promote efficient interaction of the mRNA with the 40S ribosome and allow for internal ribosome entry. Internal initiation of translation of specific mRNAs may contribute to development of severe disease and pathological states, such as hepatitis C and cancer. Therefore, this cellular mechanism represents an attractive target for pharmacological modulation. The purpose of this review is to provide insight into current strategies used to target viral and cellular IRESs and discuss the physiological consequences (and potential therapeutic implications) of abrogation/modulation of IRES-mediated translation.
Collapse
Affiliation(s)
- Anton A Komar
- Department of Biological, Geological and Environmental Sciences, Center for Gene Regulation in Health and Disease, Cleveland State University , Cleveland, OH , USA
| | - Maria Hatzoglou
- Department of Pharmacology, School of Medicine, Case Western Reserve University , Cleveland, OH , USA
| |
Collapse
|
65
|
Antonio N, Bønnelykke-Behrndtz ML, Ward LC, Collin J, Christensen IJ, Steiniche T, Schmidt H, Feng Y, Martin P. The wound inflammatory response exacerbates growth of pre-neoplastic cells and progression to cancer. EMBO J 2015; 34:2219-36. [PMID: 26136213 PMCID: PMC4585460 DOI: 10.15252/embj.201490147] [Citation(s) in RCA: 185] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 04/15/2015] [Accepted: 05/25/2015] [Indexed: 12/21/2022] Open
Abstract
There is a long-standing association between wound healing and cancer, with cancer often described as a "wound that does not heal". However, little is known about how wounding, such as following surgery, biopsy collection or ulceration, might impact on cancer progression. Here, we use a translucent zebrafish larval model of Ras(G12V)-driven neoplasia to image the interactions between inflammatory cells drawn to a wound, and to adjacent pre-neoplastic cells. We show that neutrophils are rapidly diverted from a wound to pre-neoplastic cells and these interactions lead to increased proliferation of the pre-neoplastic cells. One of the wound-inflammation-induced trophic signals is prostaglandin E2 (PGE2). In an adult model of chronic wounding in zebrafish, we show that repeated wounding with subsequent inflammation leads to a greater incidence of local melanoma formation. Our zebrafish studies led us to investigate the innate immune cell associations in ulcerated melanomas in human patients. We find a strong correlation between neutrophil presence at sites of melanoma ulceration and cell proliferation at these sites, which is associated with poor prognostic outcome.
Collapse
Affiliation(s)
- Nicole Antonio
- School of Biochemistry, University of Bristol, Bristol, UK
| | - Marie Louise Bønnelykke-Behrndtz
- Department of Experimental Clinical Oncology, Aarhus University, Aarhus, Denmark Department of Plastic and Reconstructive Surgery, Aarhus University, Aarhus, Denmark
| | - Laura Chloe Ward
- School of Physiology and Pharmacology, University of Bristol, Bristol, UK
| | - John Collin
- School of Physiology and Pharmacology, University of Bristol, Bristol, UK
| | | | - Torben Steiniche
- Department of Pathology, Aarhus University, Aarhus, Denmark Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Henrik Schmidt
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark Department of Oncology, Aarhus University, Aarhus, Denmark
| | - Yi Feng
- MRC Centre for Inflammation Research, University of Edinburgh, Edinburgh, UK
| | - Paul Martin
- School of Biochemistry, University of Bristol, Bristol, UK School of Physiology and Pharmacology, University of Bristol, Bristol, UK School of Medicine, University of Cardiff, Cardiff, UK
| |
Collapse
|
66
|
Schinzari V, Barnaba V, Piconese S. Chronic hepatitis B virus and hepatitis C virus infections and cancer: synergy between viral and host factors. Clin Microbiol Infect 2015; 21:969-74. [PMID: 26163104 DOI: 10.1016/j.cmi.2015.06.026] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Revised: 06/12/2015] [Accepted: 06/16/2015] [Indexed: 02/07/2023]
Abstract
Hepatitis B virus (HBV) or hepatitis C virus (HCV) infections represent major causes of chronic liver disease and hepatocellular carcinoma. Despite inducing shared pathological events leading to oncogenic transformation, these two viruses present profound differences in their molecular features, life cycle and interplay with host factors, which significantly differentiate the prognostic and therapeutic approach to the related diseases. In the present review, we report the main mechanisms involved in the multistep process leading from HCV/HBV infection and cancer development, discussing side-by-side the analogies and differences between the two viruses. Such events can be broadly categorized into (a) direct oncogenic effects, involving integration in the host genome (in the case of HBV) and chromosomal instability, interference with oncosuppressor pathways, induction of oxidative stress, promotion of angiogenesis, epithelial-mesenchymal transition, alterations in the epigenetic asset and interaction with non-coding RNAs; and (b) indirect activities mostly mediated by host events, including chronic inflammation sustained by peculiar cytokine networks (such as interleukin-6 and lymphotoxins), metabolic dysfunctions promoted by steatohepatitis, interplay with gut microbiota and fibrotic events (mainly in HCV infection). This scenario suggests that the integrated study of viral and host factors may lead to the successful development of novel biomarkers and targets for therapy.
Collapse
Affiliation(s)
- V Schinzari
- Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome, Italy
| | - V Barnaba
- Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome, Italy; Istituto Pasteur-Fondazione Cenci Bolognetti, Rome, Italy.
| | - S Piconese
- Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome, Italy; Istituto Pasteur-Fondazione Cenci Bolognetti, Rome, Italy
| |
Collapse
|
67
|
Li DK, Chung RT. Impact of hepatitis C virus eradication on hepatocellular carcinogenesis. Cancer 2015; 121:2874-82. [PMID: 26079399 DOI: 10.1002/cncr.29528] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2015] [Revised: 05/17/2015] [Accepted: 05/27/2015] [Indexed: 12/19/2022]
Abstract
Hepatocellular carcinoma (HCC) is one of the leading causes of cancer-related death in the world. Infection with hepatitis C virus (HCV) represents one of the most common risk factors for HCC development, and cases of HCV-related complications have been rising over the last 2 decades. Although the standard for HCV therapy has been interferon (IFN)-based for many years, the therapeutic revolution spurred by the development of direct-acting antivirals (DAAs) promises to usher in a new era in which chronic HCV becomes a rare disease. On the basis of long-term follow-up of patients experiencing IFN-based sustained virological responses (SVRs), it can be expected that rates of HCV-associated HCC will decrease significantly after the widespread adoption of DAAs, but there remains a persistent risk for HCC even among some patients with advanced fibrosis who have achieved SVR. As such, individuals treated for HCV with advanced fibrosis should continue to be screened regularly for HCC after SVR. Furthermore, as the population of SVR patients grows, it will become imperative to accurately identify those individuals at high risk for developing HCC, appropriately allocate resources for screening, and consider cost-effective chemopreventive strategies. Risk factors include preexisting advanced fibrosis/cirrhosis, older age, diabetes mellitus, and ethanol use. In addition, laboratory biomarkers and genetic signatures are currently being identified that not only predict the likelihood of HCC development in SVR patients but also may serve as dynamic indicators of therapeutic response.
Collapse
Affiliation(s)
- Darrick K Li
- Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts
| | - Raymond T Chung
- Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts.,Liver Center, Division of Gastroenterology, Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts
| |
Collapse
|
68
|
Abstract
The mechanism by which reactive oxygen species (ROS) are produced by tumour cells remained incompletely understood until the discovery over the last 15 years of the family of NADPH oxidases (NOXs 1–5 and dual oxidases DUOX1/2) which are structural homologues of gp91phox, the major membrane-bound component of the respiratory burst oxidase of leucocytes. Knowledge of the roles of the NOX isoforms in cancer is rapidly expanding. Recent evidence suggests that both NOX1 and DUOX2 species produce ROS in the gastrointestinal tract as a result of chronic inflammatory stress; cytokine induction (by interferon-γ, tumour necrosis factor α, and interleukins IL-4 and IL-13) of NOX1 and DUOX2 may contribute to the development of colorectal and pancreatic carcinomas in patients with inflammatory bowel disease and chronic pancreatitis, respectively. NOX4 expression is increased in pre-malignant fibrotic states which may lead to carcinomas of the lung and liver. NOX5 is highly expressed in malignant melanomas, prostate cancer and Barrett's oesophagus-associated adenocarcinomas, and in the last it is related to chronic gastro-oesophageal reflux and inflammation. Over-expression of functional NOX proteins in many tissues helps to explain tissue injury and DNA damage from ROS that accompany pre-malignant conditions, as well as elucidating the potential mechanisms of NOX-related damage that contribute to both the initiation and the progression of a wide range of solid and haematopoietic malignancies.
Collapse
|