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ebv associated lymphoma

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https://www.readbyqxmd.com/read/28739754/collision-of-lymphoepithelioma-like-carcinoma-with-diffuse-large-b-cell-lymphoma-of-the-stomach-a-case-report
#1
Liyan Liu, Huishan Zhao, Lin Sheng, Ping Yang, Huihui Zhou, Ruizheng Wang
BACKGROUND/AIM: Collision of Epstein-Barr virus (EBV)-associated lymphoepithelioma-like carcinoma (LELC) with non-Hodgkin's lymphoma of the stomach is extremely rare. PATIENTS AND METHODS: Herein we report a case of LELC with primary diffuse large B-cell lymphoma (DLBCL) of the stomach in a 65-year-old patient. RESULTS: Gastric endoscopy showed a poorly differentiated adenocarcinoma of the stomach. The patient underwent radical gastrectomy, and histopathological examinations revealed the collision of LELC and DLBCL of the stomach...
August 2017: Anticancer Research
https://www.readbyqxmd.com/read/28725300/epstein-barr-virus-ebv-associated-epithelial-and-non-epithelial-lesions-of-the-oral-cavity
#2
REVIEW
Kentaro Kikuchi, Harumi Inoue, Yuji Miyazaki, Fumio Ide, Masaru Kojima, Kaoru Kusama
Epstein-Barr virus (EBV) is known to be associated with the development of malignant lymphoma and lymphoproliferative disorders (LPDs) in immunocompromised patients. EBV, a B-lymphotropic gamma-herpesvirus, causes infectious mononucleosis and oral hairy leukoplakia, as well as various pathological types of lymphoid malignancy. Furthermore, EBV is associated with epithelial malignancies such as nasopharyngeal carcinoma (NPC), salivary gland tumor, gastric carcinoma and breast carcinoma. In terms of oral disease, there have been several reports of EBV-related oral squamous cell carcinoma (OSCC) worldwide...
August 2017: Japanese Dental Science Review
https://www.readbyqxmd.com/read/28724958/viral-driven-epigenetic-events-alter-the-expression-of-cancer-related-genes-in-epstein-barr-virus-naturally-infected-burkitt-lymphoma-cell-lines
#3
Hector Hernandez-Vargas, Henri Gruffat, Marie Pierre Cros, Audrey Diederichs, Cécilia Sirand, Romina C Vargas-Ayala, Antonin Jay, Geoffroy Durand, Florence Le Calvez-Kelm, Zdenko Herceg, Evelyne Manet, Christopher P Wild, Massimo Tommasino, Rosita Accardi
Epstein-Barr virus (EBV) was identified as the first human virus to be associated with a human malignancy, Burkitt's lymphoma (BL), a pediatric cancer endemic in sub-Saharan Africa. The exact mechanism of how EBV contributes to the process of lymphomagenesis is not fully understood. Recent studies have highlighted a genetic difference between endemic (EBV+) and sporadic (EBV-) BL, with the endemic variant showing a lower somatic mutation load, which suggests the involvement of an alternative virally-driven process of transformation in the pathogenesis of endemic BL...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28724765/translesion-polymerase-pol-%C3%AE-is-required-for-efficient-epstein-barr-virus-infectivity-and-is-regulated-by-the-viral-deubiquitinating-enzyme-bplf1
#4
Ossie F Dyson, Joseph S Pagano, Christopher B Whitehurst
Epstein-Barr Virus (EBV) infection and lytic replication are known to induce a cellular DNA damage response. Previously we showed that the virally encoded BPLF1 protein interacts with and regulates several members of the translesion synthesis pathway (TLS), a DNA damage tolerance pathway, and that these cellular factors enhance viral infectivity. BPLF1 is a late lytic cycle gene, but the protein is also packaged in the viral tegument indicating that BPLF1 may function both early and late during infection. BPLF1 expresses deubiquitinating activity that is strictly conserved across the Herpesviridae; mutation of the active-site cysteine results in loss of enzymatic activity...
July 19, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28712115/expression-of-interferon-regulatory-factor-7-correlates-with-the-expression-of-epstein-barr-virus-latent-membrane-protein-1-and-cervical-lymph-node-metastasis-in-nasopharyngeal-cancer
#5
Satoru Kondo, Kazuhira Endo, Naohiro Wakisaka, Mitsuharu Aga, Makoto Kano, Noriko Seishima, Tomoko Imoto, Eiji Kobayashi, Makiko Moriyama-Kita, Yosuke Nakanishi, Shigeyuki Murono, Joseph S Pagano, Tomokazu Yoshizaki
Interferon regulatory factor 7 (IRF7) has oncogenic properties in several malignancies such as Epstein-Barr virus (EBV)-associated lymphoma. However, there is no evidence whether IRF7 is associated with the oncogenesis of nasopharyngeal cancer (NPC), the pathogenesis of which is closely associated with EBV. Herein, we report that expression of IRF7 was increased in normal nasopharyngeal cells that expressed the EBV principal oncoprotein, latent membrane protein 1 (LMP1). In addition, IRF7 was mainly expressed in the nucleus in both normal nasopharyngeal cells and nasopharyngeal cancer cells that expresses LMP1...
July 16, 2017: Pathology International
https://www.readbyqxmd.com/read/28707331/epstein-barr-virus-lytic-cycle-involvement-in-diffuse-large-b-cell-lymphoma
#6
Melina Cohen, Aldana Georgina Vistarop, Fuad Huaman, Marina Narbaitz, Fernanda Metrebian, Elena De Matteo, María Victoria Preciado, Paola Andrea Chabay
Epstein-Barr virus (EBV)-mediated B cell transformation is achieved predominantly through the action of latent proteins, but recent evidence suggests that lytic EBV replication has also a certain pathogenic role in lymphomagenesis, at least in the early phases of cell transformation. Particularly, in diffuse large B cell lymphoma (DLBCL), the EBV lytic cycle is by and large unexplored, so to disclose lytic cell contribution to lymphomagenesis, our aim was to evaluate viral early and late lytic gene expression in relation to several immune response markers in a series of EBV+ DLBCL from Argentina...
July 14, 2017: Hematological Oncology
https://www.readbyqxmd.com/read/28705173/conserved-sequences-of-bart-and-bhrf-regions-encoding-viral-micrornas-in-epstein-barr-virus-associated-lymphoma
#7
Keishin Sunagawa, Tsunekazu Hishima, Hitomi Fukumoto, Hideki Hasegawa, Harutaka Katano
OBJECTIVE: Epstein-Barr virus (EBV) encodes at least 25 pri-microRNAs (miRNAs) in two regions of its DNA genome, BART and BHRF. B95-8, an EBV reference strain, has a deletion in the BART region. However, no information is available on the deletions or mutations in the BART and BHRF regions in clinical samples of EBV-associated lymphoma. RESULTS: Nine DNA fragments encoding miR-BARTs and two coding miR-BHRF1s were amplified by PCR from DNA samples extracted from 16 cases of EBV-associated lymphoma...
July 14, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28704654/persistent-kshv-infection-increases-ebv-associated-tumor-formation-in%C3%A2-vivo-via-enhanced-ebv-lytic-gene-expression
#8
Donal McHugh, Nicole Caduff, Mario Henrique M Barros, Patrick C Rämer, Ana Raykova, Anita Murer, Vanessa Landtwing, Isaak Quast, Christine T Styles, Michael Spohn, Adeola Fowotade, Henri-Jacques Delecluse, Alexandra Papoudou-Bai, Yong-Moon Lee, Jin-Man Kim, Jaap Middeldorp, Thomas F Schulz, Ethel Cesarman, Andrea Zbinden, Riccarda Capaul, Robert E White, Martin J Allday, Gerald Niedobitek, David J Blackbourn, Adam Grundhoff, Christian Münz
The human tumor viruses Epstein-Barr virus (EBV) and Kaposi sarcoma-associated herpesvirus (KSHV) establish persistent infections in B cells. KSHV is linked to primary effusion lymphoma (PEL), and 90% of PELs also contain EBV. Studies on persistent KSHV infection in vivo and the role of EBV co-infection in PEL development have been hampered by the absence of small animal models. We developed mice reconstituted with human immune system components as a model for KSHV infection and find that EBV/KSHV dual infection enhanced KSHV persistence and tumorigenesis...
July 12, 2017: Cell Host & Microbe
https://www.readbyqxmd.com/read/28695659/epstein-barr-virus-negative-extranodal-true-natural-killer-cell-lymphoma-harbouring-a-kdm6a-mutation
#9
Naoko Tsuyama, Reimi Asaka, Akito Dobashi, Satoko Baba, Yuko Mishima, Kyoko Ueda, Masahiko Oguchi, Hideki Tsuji, Kiyohiko Hatake, Kengo Takeuchi
Extranodal natural killer (NK)/T-cell lymphoma, nasal type (ENKTL) is an extranodal aggressive T or NK-cell lymphoma that is characteristically associated with Epstein-Barr virus (EBV) infection and cytotoxic tissue-destructive features. Although ENKTL is described as a distinct entity according to the 2008 WHO classification, a considerable complexity is associated with the differential diagnosis of other T-cell lymphomas with respect to tumour cell origins, locations, and the presence of EBV infection, as well as molecular and cytogenetic abnormalities...
July 10, 2017: Hematological Oncology
https://www.readbyqxmd.com/read/28679993/iatrogenic-immunodeficiency-associated-epstein-barr-virus-ebv-negative-natural-killer-cell-lymphoproliferative-disorder-in-a-patient-undergoing-rheumatoid-arthritis-therapy
#10
Tomoyuki Uchida, Morihiro Inoue, Jian Hua, Shogo Tajima, Yasunori Ota, Masao Hagihara
Here we present a patient with rheumatoid arthritis (RA), who was suspected to have developed malignant lymphoma during immunosuppressive therapy 5 years earlier. She temporarily achieved remission after discontinuing therapy; however, her disease worsened with remittent fever and splenomegaly. Splenic biopsy demonstrated infiltration by abnormal cells, which were positive for CD56 and T cell intracytoplasmic antigen, but negative for CD3 and Epstein-Barr virus (EBV) -encoded RNA. Cytogenetic analysis of bone marrow and lumbar spine tumor revealed common complex karyotype abnormalities...
2017: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
https://www.readbyqxmd.com/read/28679966/current-treatment-approaches-for-nk-t-cell-lymphoma
#11
Motoko Yamaguchi, Kana Miyazaki
Extranodal NK/T-cell lymphoma, nasal type (ENKL), is a form of lymphoma characterized by preferential extranodal involvement, Epstein-Barr virus (EBV) association, and geographic diversity in incidence. ENKL tumor cells express P-glycoprotein, which is related to multidrug resistance (MDR). This MDR phenomenon is thought to be the major reason why ENKL is resistant to anthracycline-containing chemotherapies and has led researchers to explore novel therapeutic strategies. Since the early 2000s, next-generation therapies, including upfront radiotherapy, chemotherapy, or concurrent chemoradiotherapy using non-MDR-related drugs, have markedly changed the management of ENKL...
July 6, 2017: Journal of Clinical and Experimental Hematopathology: JCEH
https://www.readbyqxmd.com/read/28672968/clinical-analysis-of-42-cases-of-ebv-positive-mature-t-nk-cell-neoplasms
#12
Haiyan Yang, Gan Fu, Jia Liu, Zhenzhen Da, Xiaoye Cheng, Cong Chen, Yan Li, Bin Fu, Xiaolin Li
The pathogenesis of Epstein-Barr virus-positive (EBV(+)) mature T-cell and natural killer (NK)-cell neoplasms is challenging to understand. The clinical features are diverse, with no typical manifestation. Therefore, it is important to analyze the association of the clinical characteristics and prognoses of patients with various factors associated with EBV(+) T/NK-cell neoplasms, particularly extranodal NK/T cell lymphoma, systemic EBV(+) T/NK cell lymphoproliferative disorders, aggressive NK cell leukemia and EBV(+) peripheral T-cell lymphoma...
July 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28667038/post-transplant-lymphoproliferative-disorder-presented-in-a-form-of-primary-effusion-lymphoma-with-t-8-14
#13
Sadia Sultana, Suhair Al Salihi, Nidhi Tandon, Jesse Jaso, Nghia D Nguyen, Songlin Zhang, Jing Liu
Post-transplant lymphoproliferative disorders (PTLD) are emergent complications of organ transplantation occurring in 2% to 10% of transplanted patients. Epstein-Barr virus (EBV) infections are considered the most important factors for the development of these heterogeneous disorders. Primary effusion lymphoma (PEL) is a lymphoproliferative disorder predominantly described in patients with advanced AIDS and it is almost universally associated with human herpesvirus 8 (HHV8). In rare case, PEL also occurs in HHV8-negative patient, in the setting of hepatitis B and C virus infection...
May 2017: Annals of Clinical and Laboratory Science
https://www.readbyqxmd.com/read/28654015/lmp1-and-dynamic-progressive-telomere-dysfunction-a-major-culprit-in-ebv-associated-hodgkin-s-lymphoma
#14
REVIEW
Hans Knecht, Sabine Mai
Epstein-Barr virus (EBV)-encoded latent membrane protein 1 (LMP1) is expressed in germinal-center-derived, mononuclear Hodgkin (H) and multinuclear, diagnostic Reed-Sternberg (RS) cells in classical EBV-positive Hodgkin's lymphoma (cHL). LMP1 expression in EBV-negative H-cell lines results in a significantly increased number of RS cells. In a conditional, germinal-center-derived B-cell in vitro system, LMP1 reversibly down-regulates the shelterin proteins, telomeric repeat binding factor (TRF)1, TRF2, and protection of telomeres (POT)1...
June 27, 2017: Viruses
https://www.readbyqxmd.com/read/28645328/ocular-manifestations-as-first-signs-of-systemic-t-cell-lymphoma-in-two-cases
#15
Xiao Zhang, Xin-Shu Liu, Chan Zhao, Ya-Min Lai, Mei-Fen Zhang
BACKGROUND: Intraocular involvement of systemic T-cell lymphomas are uncommon and have been broadly regarded as markers of poor prognosis. We reported two cases of uveitis patients finally diagnosed as systemic T cell lymphoma. CASE PRESENTATION: Case one is a 19-year-old female presented with fever and liver dysfunction, and was diagnosed as EBV-associated chronic active hepatitis. Fourteen months later, she suffered from recurrent granulomatous anterior uveitis in both eyes, which failed to respond to steroid and immunosuppressant therapy...
June 23, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28639256/response-and-survival-benefit-with-chemoimmunotherapy-in-epstein-barr-virus-positive-diffuse-large-b-cell-lymphoma
#16
Brady E Beltran, Pilar Quiñones, Domingo Morales, Jose M Malaga, Julio C Chavez, Eduardo M Sotomayor, Jorge J Castillo
Epstein-Barr virus (EBV)-positive diffuse large B-cell lymphoma (DLBCL) is a haematologic malignancy with poor prognosis when treated with chemotherapy. We evaluated response and survival benefits of chemoimmunotherapy in EBV-positive DLBCL patients. A total of 117 DLBCL patients were included in our retrospective analysis; 33 were EBV-positive (17 treated with rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone [R-CHOP] and 16 with CHOP), and 84 were EBV-negative (all treated with R-CHOP)...
June 22, 2017: Hematological Oncology
https://www.readbyqxmd.com/read/28638688/spontaneous-regression-of-epstein-barr-virus-associated-lymphoproliferative-disorder-in-a-juvenile-idiopathic-arthritis-patient-after-the-discontinuation-of-methotrexate-and-etanercept
#17
Ariane Klein, Harald Reinhard, Annette M Mueller, Gerd Horneff
A case of a 16-year-old female with polyarticular juvenile idiopathic arthritis (JIA) since the age of 4 years is reported here. This patient also suffered from multiple congenital anomalies. On long-term treatment with oral methotrexate (MTX) and etanercept, multiple subcutaneous nodules were detected, which were accompanied by increased lactate dehydrogenase and uric acid levels. A biopsy of the largest nodule revealed Epstein-Barr (EB) virus-positive diffuse large B-cell lymphoma (DLBCL). The patient was classified as clinical stage IIIA due to a mediastinal lesion...
June 2017: European Journal of Rheumatology
https://www.readbyqxmd.com/read/28637474/arsenic-trioxide-inhibits-ebv-reactivation-and-promotes-cell-death-in-ebv-positive-lymphoma-cells
#18
Qinyan Yin, Mark Sides, Christopher H Parsons, Erik K Flemington, Joseph A Lasky
BACKGROUND: Epstein-Barr Virus (EBV) is associated with hematopoietic malignancies, such as Burkitt's lymphoma, post-transplantation lymphoproliferative disorder, and diffuse large B-cell lymphoma. The current approach for EBV-associated lymphoma involves chemotherapy to eradicate cancer cells, however, normal cells may be injured and organ dysfunction may occur with currently employed regimens. This research is focused on employing arsenic trioxide (ATO) as EBV-specific cancer therapy takes advantage of the fact the EBV resides within the malignant cells...
June 21, 2017: Virology Journal
https://www.readbyqxmd.com/read/28617871/hypoxia-inducible-factor-1%C3%AE-plays-roles-in-epstein-barr-virus-s-natural-life-cycle-and-tumorigenesis-by-inducing-lytic-infection-through-direct-binding-to-the-immediate-early-bzlf1-gene-promoter
#19
Richard J Kraus, Xianming Yu, Blue-Leaf A Cordes, Saraniya Sathiamoorthi, Tawin Iempridee, Dhananjay M Nawandar, Shidong Ma, James C Romero-Masters, Kyle G McChesney, Zhen Lin, Kathleen R Makielski, Denis L Lee, Paul F Lambert, Eric C Johannsen, Shannon C Kenney, Janet E Mertz
When confronted with poor oxygenation, cells adapt by activating survival signaling pathways, including the oxygen-sensitive transcriptional regulators called hypoxia-inducible factor alphas (HIF-αs). We report here that HIF-1α also regulates the life cycle of Epstein-Barr virus (EBV). Incubation of EBV-positive gastric carcinoma AGS-Akata and SNU-719 and Burkitt lymphoma Sal and KemIII cell lines with a prolyl hydroxylase inhibitor, L-mimosine or deferoxamine, or the NEDDylation inhibitor MLN4924 promoted rapid and sustained accumulation of both HIF-1α and lytic EBV antigens...
June 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28610450/novel-tumor-markers-provide-improved-prediction-of-survival-after-diagnosis-of-human-immunodeficiency-virus-hiv-related-diffuse-large-b-cell-lymphoma
#20
Chun Chao, Michael J Silverberg, Lie-Hong Chen, Lanfang Xu, Otoniel Martínez-Maza, Donald I Abrams, Hongbin D Zha, Reina Haque, Jonathan Said
Existing prognostic tools for HIV + diffuse large B-cell lymphoma (DLBCL) fail to accurately predict patient outcomes. To develop a novel prognostic algorithm incorporating molecular tumor characteristics and HIV disease factors, we included 80 patients with HIV-related DLBCL diagnosed between 1996 and 2007. Immunohistochemistry staining was used to analyze the expression of 26 tumor markers. Clinical data were collected from medical records. Logistic regression and bootstrapping were used to select and assess stability of the prognostic model, respectively...
June 13, 2017: Leukemia & Lymphoma
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