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Huo H, Hu G. CRISPR/Cas9-mediated LMP1 knockout inhibits Epstein-Barr virus infection and nasopharyngeal carcinoma cell growth. Infect Agent Cancer 2019; 14:30. [PMID: 31673282 PMCID: PMC6816172 DOI: 10.1186/s13027-019-0246-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 09/20/2019] [Indexed: 12/27/2022] Open
Abstract
Background A strong association between Epstein-Barr virus (EBV) infection and nasopharyngeal carcinoma (NPC) has been widely recognized in recent decades. The aim of the present study was to investigate latent membrane protein 1 (LMP1) regulation of nasopharyngeal carcinoma (NPC) CNE-2 cell growth and then examine the effects of LMP1-knockout with CRISPR (Clustered Regularly Interspaced Short Palindromic Repeats)/Cas9on Epstein-Barr virus (EBV) infection and CNE-2 cell growth. Methods Human NPC CNE-2 cells were infected with the recombinant LMP1- and LMP2A-carrying lentivirus, and then examined for cell growth with the colony forming assay as well as for the activation of transcription of eukaryotic translation initiation factor 4E (eIF4E) with reverse-transcriptase quantitative polymerase chain reaction (RT-qPCR) and western blot. CRISPR/Cas9-mediated knockout of LMP1 or LMP2A was performed with a single-guide RNA (sgRNA) targeting sequences within LMP1 or LMP2A. The knockout effect and the EBV proliferation were examined with RT-qPCR, western blot and cell growth assay. Results LMP1 overexpression promoted CNE-2 cell growth, compared to LMP2A overexpression. Loss-of-function experiments confirmed that eukaryotic translation initiation factor 4E (eIF4E) upregulation mediated this effect. LMP1 knockout significantly inhibited EBV proliferation in CNE-2 cells and markedly inhibited LMP1-mediated promotion of cell growth. The knockout of either LMP1 or LMP2A blocked the eIF4E activation, which is induced either by the EBV infection or by the overexpression of LMP1 or LMP2A. Conclusion We confirmed the LMP1-mediated promotion of NPC cell growth. Such promotion can be effectively blocked by CRISPR/Cas9-mediated LMP1 knockout. Precise LMP1 knockout might be a promising method for targeted inhibition of EBV infection and NPC cell growth.
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Affiliation(s)
- Haifeng Huo
- Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016 China
| | - Guohua Hu
- Department of Otorhinolaryngology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016 China
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Lao TD, Nguyen TAH, Ngo KD, Thieu HH, Nguyen MT, Nguyen DH, Le TAH. Molecular Screening of Nasopharyngeal Carcinoma: Detection of LMP-1, LMP-2 Gene Expression in Vietnamese Nasopharyngeal Swab Samples. Asian Pac J Cancer Prev 2019; 20:2757-2761. [PMID: 31554374 PMCID: PMC6976830 DOI: 10.31557/apjcp.2019.20.9.2757] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Indexed: 01/12/2023] Open
Abstract
Objective: This study aimed to characterize the expression of LMP-1, LMP-2 in clinical swab samples in order to find out the potential molecular based biomarker for NPC diagnosis and screening, which could offer a chance in development of rapid method for NPC diagnosis in Vietnamese population. Materials and Methods: A total of 93 nasopharyngeal carcinoma swab samples and 100 healthy nasopharyngeal swab samples were collected to evaluate LMP-1, LMP-2 expression by Real-time reversed PCR. Results: we figured out the significant association between the expression of LMP-1 (counting for 48.39%), LMP-2 (counting for 39.78%) and NPC. No LMP-1 expression was observed, and only 1 of 100 specimens was detected with LMP-2 positive in healthy samples. In the combination of LMP-1 (+) and/or LMP-2 (+), the frequency of positive was 53.76%, greater than each gene expression. Additionally, sensitivity, specificity, positive predictive value, negative predictive value of assay were 99.00%, 98.04%, 69.72%, and 77.02%, respectively. Additionally, the LMP-2 expression level was 5.50 times higher in NPC samples than non-cancerous samples. Conclusion: Our results indicated the molecular invasive method based on the expression of LMP-1, LMP-2 in swab samples would be a promising supplement in NPC diagnosis, screening in the near future in Vietnam.
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Affiliation(s)
- Thuan Duc Lao
- Department of Pharmaceutical and Medical Biotechnology, Faculty of Biotechnology, Ho Chi Minh City Open University, Ho Chi Minh City, Vietnam.
| | | | - Kha Dong Ngo
- Faculty of Biology and Biotechnology, University of Science, VNU-HCM, Vietnam
| | - Hue Hong Thieu
- Faculty of Biology and Biotechnology, University of Science, VNU-HCM, Vietnam
| | | | | | - Thuy Ai Huyen Le
- Department of Pharmaceutical and Medical Biotechnology, Faculty of Biotechnology, Ho Chi Minh City Open University, Ho Chi Minh City, Vietnam.
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Third Epidemiological Analysis of Nasopharyngeal Carcinoma in the Central Region of Japan from 2006 to 2015. Cancers (Basel) 2019; 11:cancers11081180. [PMID: 31443218 PMCID: PMC6721521 DOI: 10.3390/cancers11081180] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 07/30/2019] [Accepted: 08/05/2019] [Indexed: 11/25/2022] Open
Abstract
The present study aimed to clarify the incidence and clinical outcomes of nasopharyngeal carcinoma (NPC) in the Chubu region of Japan from 2006 to 2015, compared with previous reports. A retrospective analysis was conducted based on medical records from 40 hospitals located in the Chubu region in the central Japanese main island, with a population of around 22.66 million individuals. This study was designed in line with to two previous clinical studies into NPC conducted in the same area of Japan. We recruited NPC patients diagnosed in hospitals across this area over a 10-year period (2006–2015) using a questionnaire about sex, age, primary site, clinical symptoms, pathology, Union for International Cancer Control (UICC) staging, serological exam, treatment, and survival. A total of 620 NPC patients were identified. The age-standardized incidence of NPC from 2006 to 2015 was 0.27 per 100,000 individuals per year. There were no significant differences between this study and the previous two studies conducted in the same area of Japan. The five-year overall survival rate for all patients was 75.9%, while those for patients with stages I, II, III, and IVA were 97%, 91%, 79%, and 68%, respectively. The age-standardized annual incidence of NPC in the present study was 0.27 per 100,000 individuals per year, which was relatively low and stable. The five-year overall survival rate for all NPC patients was significantly improved in this decade compared with previous studies. The smoking rates in male and female NPC patients were 64.5% and 18.8%, respectively, thereby suggesting the involvement of smoking in the incidence of NPC.
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Li W, Wang L, Shen C, Xu T, Chu Y, Hu C. Radiation therapy-induced reactive oxygen species specifically eliminates CD19 +IgA + B cells in nasopharyngeal carcinoma. Cancer Manag Res 2019; 11:6299-6309. [PMID: 31372036 PMCID: PMC6635828 DOI: 10.2147/cmar.s202375] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 06/06/2019] [Indexed: 11/23/2022] Open
Abstract
Purpose Nasopharyngeal carcinoma (NPC) is one of the most common head and neck cancers and is thought to be related to the mucosal immune system. Radiation therapy (RT) is the primary treatment for NPC due to the high radiosensitivity of cancer cells. However, little is known about the impact of RT on the mucosal immune system. Patients and methods In this study, the expression of immune markers CD19, CD24, CD27, CD8, and IgA before and after RT, were analyzed using flow cytometry. Cytokines were assessed using the enzyme-linked immunosorbent assay. Reactive oxygen species (ROS) was assayed by flow cytometry and fluorescence staining using 2ʹ,7ʹ -dichlorofluorescein diacetate. Results We found that primary NPC patients had a significant increase in CD19+CD138−IgA+ B cells, which was then decreased after RT. Interestingly, the changes in CD19+CD138−IgA+ B cell frequency was accompanied by corresponding frequency changes in cytotoxic T cells (CTL), which are powerful anti-tumor lymphocytes. Mechanistically, we found that ROS release during RT specifically eliminated CD19+CD138−IgA+ B cells. Conclusion These findings suggest that RT may regulate the immune system and opens up new avenues for the utilization of immune-radiotherapy in NPC.
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Affiliation(s)
- Weiwei Li
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, People's Republic of China
| | - Luman Wang
- Department of Immunology, School of Basic Medical Sciences, and Institute of Biomedical Sciences, Fudan University, Shanghai 200032, People's Republic of China
| | - Chunying Shen
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, People's Republic of China
| | - Tingting Xu
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, People's Republic of China
| | - Yiwei Chu
- Department of Immunology, School of Basic Medical Sciences, and Institute of Biomedical Sciences, Fudan University, Shanghai 200032, People's Republic of China
| | - Chaosu Hu
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, People's Republic of China
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Podoplanin, a Potential Therapeutic Target for Nasopharyngeal Carcinoma. BIOMED RESEARCH INTERNATIONAL 2019; 2019:7457013. [PMID: 31321241 PMCID: PMC6610758 DOI: 10.1155/2019/7457013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 05/27/2019] [Indexed: 12/11/2022]
Abstract
Introduction The role of podoplanin (PDPN) in nasopharyngeal carcinoma (NPC) is still unknown. The aims of this study were to investigate the expression and role of PDPN in NPC cells. Materials and Methods Immunofluorescence staining and functional tests were used to determine the effects of PDPN knockdown by siRNA in TW01 NPC cells. Microarray analysis was conducted to identify genes regulated by PDPN. The molecular mechanism of PDPN on NPC cells was further determined by Ingenuity Pathways Analysis (IPA). Results PDPN was expressed in most TW01 NPC cells. PDPN knockdown by siRNA decreased NPC cell proliferation, migration, and invasion. The microarray data showed 63 upregulated genes and 12 downregulated genes following PDPN knockdown. The top 5 most upregulated genes analyzed by IPA were IFI27, IFI44L, IFI6, OAS1, and TRIM22, and the most relevant pathway was the interferon signaling pathway. Conclusions To the best of our knowledge, this is the first report to show that knocking down PDPN leads to suppression of NPC cell proliferation, migration, and invasion. Our results suggest that PDPN may serve as a potential chemotherapeutic target for NPC treatment in the future.
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Ding RR, Yuan JL, Jia YN, Liao XM, Wang SS, Shao ZM, Feng MY, Jie W, Shen ZH. Epstein-Barr virus-encoded LMP1 regulated Pim1 kinase expression promotes nasopharyngeal carcinoma cells proliferation. Onco Targets Ther 2019; 12:1137-1146. [PMID: 30809095 PMCID: PMC6376889 DOI: 10.2147/ott.s190274] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Background Epstein–Barr virus-encoded LMP1 plays a critical role in the carcinogenesis of nasopharyngeal carcinoma (NPC), but the mechanism remains elusive. We aimed to analyze the expression and clinical pathological significance of provirus integration site for Moloney murine leukemia virus 1 (Pim1) in clinical NPC, and to elucidate the effect of LMP1 on Pim1 expression and its mechanism. Methods Immunohistochemical staining was used to detect the expression of Pim1 in clinical NPC tissues and control nasopharyngeal chronic inflammation (NPI) tissues, and the correlation between Pim1 and clinical parameters of NPC patients was analyzed. The LMP1 stable expression cell line CNE1-LMP1-OV was constructed through infecting the well-differentiated nasopharyngeal carcinoma cells CNE1 with LMP1 overexpressing lentivirus. Then the in vivo experiments were conducted. Results Among 89 NPC patients, 48 cases (53.93%) were positive for Pim1, while only one case was Pim1 positive in 15 NPI controls (6.67%). Pim1 expression was not correlated with gender, age, smoking status and clinical classification of NPC patients, but positively correlated with T, N and M classification. CNE1-LMP1-OV cell line was successfully established, which displayed a higher cell proliferation ability and Pim1 expression. NF-κB inhibitor PDTC, PKC inhibitor GF109203X and STAT3 inhibitor Stattic significantly attenuated LMP1-induced Pim1 expression, and while AP-1 inhibitor SR11302 showed no inhibitory effect. Interestingly, Pim1 inhibitor quercetagetin significantly inhibited the proliferation of CNE1-LMP1-OV cells. Conclusion LMP1 mediates Pim1 expression through NF-κB, PKC and STAT3 signaling, which promotes the proliferation of NPC cells and participate in the clinical progression of NPC.
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Affiliation(s)
- Ran-Ran Ding
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Department of Pathology, School of Basic Medicine Sciences, Guangdong Medical University, Zhanjiang 524023, China,
| | - Jian-Ling Yuan
- Department of Pathology, School of Basic Medicine Sciences, Guangdong Medical University, Zhanjiang 524023, China,
| | - Ya-Nan Jia
- Department of Pathology, School of Basic Medicine Sciences, Guangdong Medical University, Zhanjiang 524023, China, .,Department of Pathology, Dongguan People's Hospital, Dongguan 523059, China
| | - Xiao-Min Liao
- Department of Pathology, School of Basic Medicine Sciences, Guangdong Medical University, Zhanjiang 524023, China,
| | - Si-Si Wang
- Department of Pathology, School of Basic Medicine Sciences, Guangdong Medical University, Zhanjiang 524023, China,
| | - Zhong-Ming Shao
- Department of Pathology, School of Basic Medicine Sciences, Guangdong Medical University, Zhanjiang 524023, China,
| | - Mu-Yin Feng
- Department of Pathology, School of Basic Medicine Sciences, Guangdong Medical University, Zhanjiang 524023, China,
| | - Wei Jie
- Department of Pathology, School of Basic Medicine Sciences, Guangdong Medical University, Zhanjiang 524023, China,
| | - Zhi-Hua Shen
- Department of Pathology, School of Basic Medicine Sciences, Guangdong Medical University, Zhanjiang 524023, China,
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Senyuta NB, Smirnova KV, Kondratova VN, Ignatova AV, Mudunov AM, Dushenkina TE, Liechtenstein AV, Gurtsevich VE. [Diagnostics of nasopharyngeal carcinoma with Epstein-Barr virus (Herpesviridae, Lymphocryptovirus, HHV-4) serological and molecular markers in cases of undetected primary tumor location.]. Vopr Virusol 2019; 64:229-237. [PMID: 32167688 DOI: 10.36233/0507-4088-2019-64-5-229-237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 11/28/2019] [Indexed: 11/05/2022]
Abstract
INTRODUCTION The reasons of late diagnosis of nasopharyngeal carcinoma (NPC) are the long asymptomatic course of the pathological process, the anatomical structure of the nasopharynx, often small, visually and endoscopically undetectable tumor and other factors. It is proved that the Epstein-Barr virus (EBV) is an etiological agent in the most common undifferentiated non-keratinizing histological type of NPC (uNPC). OBJECTIVES The aim of the work was to assess the significance of diagnostic markers of EBV (titers of humoral antibodies to the virus and the concentration of viral DNA in plasma) for the diagnosis of uNPC in a group of patients with metastatic lesions of the cervical lymph nodes without an identified localization of the primary tumor focus. MATERIAL AND METHODS The material for the study was blood plasma of 83 patients with metastatic lesions of the cervical lymph nodes and not established localization of the primary tumor. Plasma samples were tested for the anti-EBV IgG and IgA antibody content and titers and the concentration of viral DNA. RESULTS AND DISCUSSION The data obtained indicate that the parallel testing of blood plasma for EBV-specific antibodies and viral load is a useful tool for preliminary screening of uNPC patients. The final diagnosis is confirmed by the data of subsequent morphological and instrumental studies. Several examples also show that the concentration of viral DNA in the blood plasma of patients with uNPC reflects the effect of the therapy and the prognosis of the disease: remission, stabilization of the tumor process, relapse or metastasis. CONCLUSION Although the titers of virus-specific antibodies are found to reflect clinical manifestations of the disease less accurately than the plasma concentrations of viral DNA, serological markers are extremely important for the preliminary diagnostics of uNPC in cases of undetected primary tumor location. They are also useful for primary screening of this neoplasm among individuals at risk.
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Affiliation(s)
- N B Senyuta
- N.N. Blokhin National Medical Research Center of Oncology, Moscow, 115478, Russia
| | - K V Smirnova
- N.N. Blokhin National Medical Research Center of Oncology, Moscow, 115478, Russia.,N.I. Pirogov Russian National Research Medical University, Moscow, 117997, Russia
| | - V N Kondratova
- N.N. Blokhin National Medical Research Center of Oncology, Moscow, 115478, Russia
| | - A V Ignatova
- N.N. Blokhin National Medical Research Center of Oncology, Moscow, 115478, Russia
| | - A M Mudunov
- N.N. Blokhin National Medical Research Center of Oncology, Moscow, 115478, Russia
| | - T E Dushenkina
- N.N. Blokhin National Medical Research Center of Oncology, Moscow, 115478, Russia
| | - A V Liechtenstein
- N.N. Blokhin National Medical Research Center of Oncology, Moscow, 115478, Russia
| | - V E Gurtsevich
- N.N. Blokhin National Medical Research Center of Oncology, Moscow, 115478, Russia
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Clinical Utility of In Situ Hybridization Assays in Head and Neck Neoplasms. Head Neck Pathol 2018; 13:397-414. [PMID: 30467669 PMCID: PMC6684702 DOI: 10.1007/s12105-018-0988-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2018] [Accepted: 11/15/2018] [Indexed: 10/27/2022]
Abstract
Head and neck pathology present a unique set of challenges including the morphological diversity of the neoplasms and presentation of metastases of unknown primary origin. The detection of human papillomavirus and Epstein-Barr virus associated with squamous cell carcinoma and newer entities like HPV-related carcinoma with adenoid cystic like features have critical prognostic and management implications. In salivary gland neoplasms, differential diagnoses can be broad and include non-neoplastic conditions as well as benign and malignant neoplasms. The detection of specific gene rearrangements can be immensely helpful in reaching the diagnosis in pleomorphic adenoma, mucoepidermoid carcinoma, secretory carcinoma, hyalinizing clear cell carcinoma and adenoid cystic carcinoma. Furthermore, molecular techniques are essential in diagnosis of small round blue cell neoplasms and spindle cell neoplasms including Ewing sarcoma, rhabdomyosarcoma, synovial sarcoma, biphenotypic sinonasal sarcoma, dermatofibrosarcoma protuberans, nodular fasciitis and inflammatory myofibroblastic tumor. The detection of genetic rearrangements is also important in lymphomas particularly in identifying 'double-hit' and 'triple-hit' lymphomas in diffuse large B cell lymphoma. This article reviews the use of in situ hybridization in the diagnosis of these neoplasms.
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Gallardo F, Mariamé B, Gence R, Tilkin-Mariamé AF. Macrocyclic lactones inhibit nasopharyngeal carcinoma cells proliferation through PAK1 inhibition and reduce in vivo tumor growth. DRUG DESIGN DEVELOPMENT AND THERAPY 2018; 12:2805-2814. [PMID: 30233143 PMCID: PMC6135081 DOI: 10.2147/dddt.s172538] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Purpose The Epstein-Barr virus (EBV)-associated cancer nasopharyngeal carcinoma (NPC) is rare in Europe and North America but is a real public health problem in some regions of the world, such as southern Asia, North Africa, and for Inuit populations. Due to the anatomy and location of the nasopharynx, surgery is rarely used to treat primary NPC cancers. Treatment by radiotherapy, combined or not with chemotherapy, are efficient for primary tumors but often do not protect against fatal relapses or metastases. Methods Search for new therapeutic molecules through high content screening lead to the identification of Ivermectin (IVM) as a promising drug. IVM is a US Food and Drug Administration-approved macrocyclic lactone widely used as anthelmintic and insecticidal agent that has also shown protective effects against cancers. Results We show here that IVM has cytotoxic activity in vitro against NPC cells, in which it reduces MAPKs pathway activation through the inhibition PAK-1 activity. Moreover, all macrocyclic lactones tested and a PAK1 inhibitor are cytotoxic in vitro for EBV-positive and EBV-negative NPC tumor cells. We have also shown that IVM intraperitoneal repeated injections, at US Food and Drug Administration-approved doses, have no significant toxicity and decrease NPC subcutaneous tumors development in nude mice. Conclusion Macrocyclic lactones appear as promising molecules against NPC targeting PAK-1 with no detectable adverse effect.
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Affiliation(s)
- Franck Gallardo
- NeoVirTech, SAS, Institut for Advanced Technology in Life Science (ITAV), Toulouse, France,
| | | | - Remi Gence
- INSERM UMR 1037, CRCT, University of Toulouse, Toulouse, France
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Si YF, Deng ZX, Weng JJ, Si JY, Lan GP, Zhang BJ, Yang Y, Huang B, Han X, Qin Y, Qin YD, Xiong WM, Li B. A study on the value of narrow-band imaging (NBI) for the general investigation of a high-risk population of nasopharyngeal carcinoma (NPC). World J Surg Oncol 2018; 16:126. [PMID: 29973209 PMCID: PMC6032783 DOI: 10.1186/s12957-018-1423-5] [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: 03/22/2018] [Accepted: 06/22/2018] [Indexed: 12/11/2022] Open
Abstract
Background This study aims to explore the feasibility of narrow-band imaging (NBI) applied for the diagnostic screening of a high-risk population of nasopharyngeal carcinoma (NPC) and increase the accuracy rate of nasopharyngeal biopsy and the diagnosis rate of early-stage patients. Methods The positive high-risk population of NPC to EB virus antibody was followed up. At the same time, serological screening and pharyngorhinoscopy were carried out. The specific methods were as follows: (1) all subjects received nasopharyngeal examinations through both the HD endoscopic white light mode (WL) and NBI mode, (2) nasopharyngeal biopsy was conducted on positive subjects with microscopic examination, and, finally, (3) a comparative analysis was conducted between the biopsy pathology results and microscopy results. In addition, the following comparative indicators were recorded under different modes: sensitivity, specificity, accuracy, positive likelihood ratio, and negative likelihood ratio. Then, the area under the ROC curve and the kappa coefficient were calculated. Results A total of 115 subjects were detected to be positive by microscopic examination under the WL mode. Among these subjects, 19 subjects were diagnosed with NPC. In addition, 24 subjects were detected to be positive by microscopic examination under the NBI mode. Among these subjects, 23 subjects were diagnosed with NPC. Under the WL mode, the specific values of the comparative indicators were as follows: sensitivity, 82.61%; specificity, 0%; and area under the ROC curve, 0.413. Furthermore, the WL mode in the diagnosis on the high-risk population of NPC exhibited poor consistency with the biopsy pathology results (kappa coefficient = − 0.069). Under the NBI mode, the specific values of the comparative indicators were as follows: sensitivity, 100%; specificity, 98.96%; and area under the ROC curve, 0.995. Furthermore, the NBI mode in the diagnosis on the high-risk population of NPC exhibited relatively satisfactory consistency with the biopsy pathology results (kappa coefficient = 0.973). Therefore, the NBI mode is significantly superior to the WL mode. Conclusion NBI endoscopic examinations should be conducted on a routine basis for high-risk populations of NPC. This can decrease the frequency of biopsies and enhance diagnostic effects.
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Affiliation(s)
- Yong-Feng Si
- Department of Otolaryngology-Head and Neck Oncology, The People's Hospital of Guangxi Zhuang Autonomous Region, No. 6 of Taoyuan Street, Nanning, 530021, Qingxiu District, China.
| | - Zhuo-Xia Deng
- Department of Otolaryngology-Head and Neck Oncology, The People's Hospital of Guangxi Zhuang Autonomous Region, No. 6 of Taoyuan Street, Nanning, 530021, Qingxiu District, China
| | - Jing-Jin Weng
- Department of Otolaryngology-Head and Neck Oncology, The People's Hospital of Guangxi Zhuang Autonomous Region, No. 6 of Taoyuan Street, Nanning, 530021, Qingxiu District, China
| | - Jin-Yuan Si
- Department of Otolaryngology-Head and Neck Oncology, The People's Hospital of Guangxi Zhuang Autonomous Region, No. 6 of Taoyuan Street, Nanning, 530021, Qingxiu District, China
| | - Gui-Ping Lan
- Department of Otolaryngology-Head and Neck Oncology, The People's Hospital of Guangxi Zhuang Autonomous Region, No. 6 of Taoyuan Street, Nanning, 530021, Qingxiu District, China
| | - Ben-Jian Zhang
- Department of Otolaryngology-Head and Neck Oncology, The People's Hospital of Guangxi Zhuang Autonomous Region, No. 6 of Taoyuan Street, Nanning, 530021, Qingxiu District, China
| | - Yong Yang
- Department of Otolaryngology-Head and Neck Oncology, The People's Hospital of Guangxi Zhuang Autonomous Region, No. 6 of Taoyuan Street, Nanning, 530021, Qingxiu District, China
| | - Bo Huang
- Department of Otolaryngology-Head and Neck Oncology, The People's Hospital of Guangxi Zhuang Autonomous Region, No. 6 of Taoyuan Street, Nanning, 530021, Qingxiu District, China
| | - Xing Han
- Department of Otolaryngology-Head and Neck Oncology, The People's Hospital of Guangxi Zhuang Autonomous Region, No. 6 of Taoyuan Street, Nanning, 530021, Qingxiu District, China
| | - Ying Qin
- Department of Otolaryngology-Head and Neck Oncology, The People's Hospital of Guangxi Zhuang Autonomous Region, No. 6 of Taoyuan Street, Nanning, 530021, Qingxiu District, China
| | - Yang-Da Qin
- Department of Otolaryngology-Head and Neck Oncology, The People's Hospital of Guangxi Zhuang Autonomous Region, No. 6 of Taoyuan Street, Nanning, 530021, Qingxiu District, China
| | - Wei-Ming Xiong
- Department of Otolaryngology-Head and Neck Oncology, The People's Hospital of Guangxi Zhuang Autonomous Region, No. 6 of Taoyuan Street, Nanning, 530021, Qingxiu District, China
| | - Bing Li
- Department of Otolaryngology-Head and Neck Oncology, The People's Hospital of Guangxi Zhuang Autonomous Region, No. 6 of Taoyuan Street, Nanning, 530021, Qingxiu District, China
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VEGF Upregulation in Viral Infections and Its Possible Therapeutic Implications. Int J Mol Sci 2018; 19:ijms19061642. [PMID: 29865171 PMCID: PMC6032371 DOI: 10.3390/ijms19061642] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Revised: 05/28/2018] [Accepted: 05/29/2018] [Indexed: 12/12/2022] Open
Abstract
Several viruses are recognized as the direct or indirect causative agents of human tumors and other severe human diseases. Vascular endothelial growth factor (VEGF) is identified as a principal proangiogenic factor that enhances the production of new blood vessels from existing vascular network. Therefore, oncogenic viruses such as Kaposi’s sarcoma herpesvirus (KSHV) and Epstein-Barr virus (EBV) and non-oncogenic viruses such as herpes simplex virus (HSV-1) and dengue virus, which lack their own angiogenic factors, rely on the recruitment of cellular genes for angiogenesis in tumor progression or disease pathogenesis. This review summarizes how human viruses exploit the cellular signaling machinery to upregulate the expression of VEGF and benefit from its physiological functions for their own pathogenesis. Understanding the interplay between viruses and VEGF upregulation will pave the way to design targeted and effective therapeutic approaches for viral oncogenesis and severe diseases.
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