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EBV T cells

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https://www.readbyqxmd.com/read/28442562/ebv-germinates-lymphoma-from-the-germinal-center-in-a-battle-with-t-and-nk-cells
#1
Kamonwan Fish, Richard Longnecker
No abstract text is available yet for this article.
April 25, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28435676/understanding-cd8-t-cell-responses-toward-the-native-and-alternate-hla-a-02-01-restricted-wt1-epitope
#2
Thi Ho Nguyen, Amabel Cl Tan, Sue D Xiang, Anne Goubier, Kim L Harland, E Bridie Clemens, Magdalena Plebanski, Katherine Kedzierska
The Wilms' tumor 1 (WT1) antigen is expressed in solid and hematological malignancies, but not healthy tissues, making it a promising target for cancer immunotherapies. Immunodominant WT1 epitopes, the native HLA-A2/WT1126-134 (RMFPNAPYL) (HLA-A2/RMFPNAPYL epitope (WT1A)) and its modified variant YMFPNAPYL (HLA-A2/YMFPNAPYL epitope (WT1B)), can induce WT1-specific CD8(+) T cells, although WT1B is more stably bound to HLA-A*02:01. Here, to further determine the benefits of those two targets, we assessed the naive precursor frequencies; immunogenicity and cross-reactivity of CD8(+) T cells directed toward these two WT1 epitopes...
March 2017: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/28418918/the-pd-1-pd-l1-expression-and-cd3-t-cell-infiltration-in-relation-to-outcome-in-advanced-gastric-signet-ring-cell-carcinoma-representing-a-potential-biomarker-for-immunotherapy
#3
Shenying Jin, Bo Xu, Lixia Yu, Yao Fu, Hongyan Wu, Xiangshan Fan, Jia Wei, Baorui Liu
Recent data supports a potentially significant role for immune checkpoint inhibitors in the treatment of gastric cancer. However, there are few data on the clinical implications of immunotherapy markers in gastric signet-ring cell carcinoma (SRCC). We evaluated the expression of programmed cell death protein-1 (PD-1), programmed cell death ligand 1(PD-L1), infiltration by CD3+ T cell, microsatellite instability (MSI), and Epstein-Barr Virus (EBV), and the relationship of each factor to survival in 89 advanced SRCC patients...
March 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/28414669/a-case-of-hepatosplentic-t-cell-lymphoma-a-rare-aggressive-tumor-of-the-young
#4
S Cingam, S Patel, N Koshy
INTRODUCTION: Hepatosplenic T-cell lymphoma (HSTCL); is an unusual entity first described in 1990 that predominantly affects middle-aged men and is classified by WHO under peripheral T-cell lymphomas. We present a 26-year-old man with HSCTL treated with a non-CHOP regimen. CASE: A 26 year old immigrant from Cameroon without significant past medical history presented with abdominal discomfort that was first noted 1 month prior at which time he was elbowed in abdomen during a basketball game...
March 2017: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
https://www.readbyqxmd.com/read/28410601/the-diagnosis-and-management-of-nk-t-cell-lymphomas
#5
REVIEW
Eric Tse, Yok-Lam Kwong
Extranodal natural killer (NK)/T-cell lymphoma is an aggressive malignancy of putative NK-cell origin, with a minority deriving from the T-cell lineage. Pathologically, the malignancy occurs in two forms, extranodal NK/T-cell lymphoma, nasal type; and aggressive NK-cell leukaemia. Lymphoma occur most commonly (80%) in the nose and upper aerodigestive tract, less commonly (20%) in non-nasal areas (skin, gastrointestinal tract, testis, salivary gland), and rarely as disseminated disease with a leukemic phase...
April 14, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28398495/a-histological-study-of-fulminant-type-1-diabetes-mellitus-related-to-human-cytomegalovirus-reactivation
#6
Sho Yoneda, Akihisa Imagawa, Kenji Fukui, Sae Uno, Junji Kozawa, Makoto Sakai, Toshiki Yumioka, Hiromi Iwahashi, Iichiro Shimomura
Context: Fulminant type 1 diabetes mellitus (T1DM) is thought to be partly caused by virus infection. Objective: This study investigated the mechanism of β cell destruction in fulminant T1DM after drug-induced hypersensitivity syndrome (DIHS). Methods: We determined the localization of viruses of human cytomegalovirus (HCMV), human herpesvirus 6 (HHV-6) and Epstein-Barr virus (EBV), and the expression of interferon regulatory factor 3 (IRF3) and viral receptors of Z DNA binding protein 1 (ZBP1) and retinoic acid-inducible gene I (RIG-I), together with inflammatory cells by immunohistochemistry of pancreas from an autopsy fulminant T1DM patient with DIHS or seven subjects with normal glucose tolerance who underwent pancreatectomy...
April 10, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28398275/natural-killer-t-cell-lymphomas-in-pediatric-and-adolescent-patients
#7
REVIEW
Amanda M Termuhlen
Natural killer/T-cell (NK/T-cell) lymphomas are rare in children and adolescents and consist predominantly of nasal-type extranodal NK/T-cell lymphomas. More than half of pediatric/adolescent patients with NK/T-cell lymphomas present with localized nasal/sinus involvement, but the disease may involve many organs. NK/T-cell lymphoma cells are cytotoxic and associated with necrosis and angioinvasion; they express CD56, CD2, cytoplasmic CD3 epsilon, and to a variable degree CD30. The cells contain Epstein-Barr virus (EBV)-encoded RNA...
March 2017: Clinical Advances in Hematology & Oncology: H&O
https://www.readbyqxmd.com/read/28395105/t-and-nk-cell-lymphomas-and-systemic-lymphoproliferative-disorders-and-the-immunodeficiency-setting-2015-sh-eahp-workshop-report-part-4
#8
Dita Gratzinger, Daphne de Jong, Elaine S Jaffe, Amy Chadburn, John K C Chan, John R Goodlad, Jonathan Said, Yasodha Natkunam
Objectives: The 2015 Workshop of the Society for Hematopathology/European Association for Haematopathology aimed to review immunodeficiency-related T- and natural killer (NK)-cell lymphoproliferations. Methods: The Workshop Panel reviewed 88 T- or NK-cell lymphoproliferations and rendered consensus diagnoses. Results: Hyperplasias of T-cell subsets may be clonal; retained architecture and the clinical setting support a benign diagnosis. Specific associations include hepatosplenic T-cell lymphoma with iatrogenic immunosuppression and breast implants with an indolent variant of anaplastic large cell lymphoma...
February 1, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28392330/viral-reactivations-and-associated-outcomes-in-context-of-immune-reconstitution-after-pediatric-hematopoietic-cell-transplantation
#9
Rick Admiraal, Coco de Koning, Caroline A Lindemans, Marc B Bierings, Annemarie M J Wensing, A Birgitta Versluys, Tom F W Wolfs, Stefan Nierkens, Jaap Jan Boelens
BACKGROUND: Viral reactivations (VR) following hematopoietic cell transplantation (HCT) contribute to significant morbidity and mortality. Timely immune reconstitution (IR) is suggested to prevent VR. OBJECTIVES: We studied the relation between IR (as a continuous over-time-predictor) and VR (as time-varying-predictor), and the relation between VR and other clinical outcomes. METHODS: In this retrospective analysis, all patients receiving a first HCT between January-2004 and September-2014 were included...
April 6, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28386262/preservation-of-antigen-specific-functions-of-%C3%AE-%C3%AE-t-cells-and-b-cells-removed-from-hematopoietic-stem-cell-transplants-suggests-their-use-as-an-alternative-cell-source-for-advanced-manipulation-and-adoptive-immunotherapy
#10
Giuseppina Li Pira, Stefano Di Cecca, Simone Biagini, Elia Girolami, Elisabetta Cicchetti, Valentina Bertaina, Concetta Quintarelli, Ignazio Caruana, Barbarella Lucarelli, Pietro Merli, Daria Pagliara, Letizia Pomponia Brescia, Alice Bertaina, Mauro Montanari, Franco Locatelli
Hematopoietic stem cell transplantation is standard therapy for numerous hematological diseases. The use of haploidentical donors, sharing half of the HLA alleles with the recipient, has facilitated the use of this procedure as patients can rely on availability of a haploidentical donor within their family. Since HLA disparity increases the risk of graft-versus-host disease, T-cell depletion has been used to remove alloreactive lymphocytes from the graft. Selective removal of αβ T cells, which encompass the alloreactive repertoire, combined with removal of B cells to prevent EBV-related lymphoproliferative disease, proved safe and effective in clinical studies...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28381684/inflammatory-cytokine-production-in-chronic-active-epstein-barr-virus-infection
#11
Erika Onozawa, Haruna Shibayama, Ken-Ichi Imadome, Akiho Tsuzura, Takatoshi Koyama, Osamu Miura, Ayako Arai
In order to clarify the mechanisms underlying the development of inflammation in chronic active Epstein-Barr virus infection (CABEV), we examined cytokine production using patient samples. Eleven patients were analyzed. The serum concentrations of IFN-γ, TNF-α, and IL-6 were significantly higher in patients than in healthy donors. The mRNAs of these cytokines in peripheral blood mononuclear cells were elevated in patients as compared with healthy donors. The mRNA of IFN-γ was significantly higher in patients than in healthy donors...
2017: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
https://www.readbyqxmd.com/read/28369146/epstein-barr-virus-infection-induced-inflammasome-activation-in-human-monocytes
#12
Yuka Torii, Jun-Ichi Kawada, Takayuki Murata, Hironori Yoshiyama, Hiroshi Kimura, Yoshinori Ito
Inflammasomes are cytoplasmic sensors that regulate the activity of caspase-1 and the secretion of interleukin-1β (IL-1β) or interleukin-18 (IL-18) in response to foreign molecules, including viral pathogens. They are considered to be an important link between the innate and adaptive immune responses. However, the mechanism by which inflammasome activation occurs during primary Epstein-Barr virus (EBV) infection remains unknown. Human B lymphocytes and epithelial cells are major targets of EBV, although it can also infect a variety of other cell types...
2017: PloS One
https://www.readbyqxmd.com/read/28367723/gene-expression-analysis-of-hypersensitivity-to-mosquito-bite-chronic-active-ebv-infection-and-nk-t-lymphoma-leukemia
#13
Kana Washio, Takashi Oka, Lamia Abdalkader, Michiko Muraoka, Akira Shimada, Megumi Oda, Hiaki Sato, Katsuyoshi Takata, Yoshitoyo Kagami, Norio Shimizu, Seiichi Kato, Hiroshi Kimura, Kazunori Nishizaki, Tadashi Yoshino, Hirokazu Tsukahara
The human herpes virus, Epstein-Barr virus (EBV), is a known oncogenic virus and plays important roles in life-threatening T/NK-cell lymphoproliferative disorders (T/NK-cell LPD) such as hypersensitivity to mosquito bite (HMB), chronic active EBV infection (CAEBV), and NK/T-cell lymphoma/leukemia. During the clinical courses of HMB and CAEBV, patients frequently develop malignant lymphomas and the diseases passively progress sequentially. In the present study, gene expression of CD16((-))CD56((+))-, EBV((+)) HMB, CAEBV, NK-lymphoma, and NK-leukemia cell lines, which were established from patients, was analyzed using oligonucleotide microarrays and compared to that of CD56(bright)CD16(dim/-) NK cells from healthy donors...
April 3, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28360361/peripheral-t-cell-lymphoma-with-ebv-infected-anaplastic-b-cell-proliferation-confined-to-sinuses
#14
Keisuke Kawasaki, Kennosuke Karube
No abstract text is available yet for this article.
March 30, 2017: Blood
https://www.readbyqxmd.com/read/28351978/mouse-model-of-epstein-barr-virus-lmp1-and-lmp2a-driven-germinal-center-b-cell-lymphoproliferative-disease
#15
Takeharu Minamitani, Yijie Ma, Hufeng Zhou, Hiroshi Kida, Chao-Yuan Tsai, Masanori Obana, Daisuke Okuzaki, Yasushi Fujio, Atsushi Kumanogoh, Bo Zhao, Hitoshi Kikutani, Elliott Kieff, Benjamin E Gewurz, Teruhito Yasui
Epstein-Barr virus (EBV) is a major cause of immunosuppression-related B-cell lymphomas and Hodgkin lymphoma (HL). In these malignancies, EBV latent membrane protein 1 (LMP1) and LMP2A provide infected B cells with surrogate CD40 and B-cell receptor growth and survival signals. To gain insights into their synergistic in vivo roles in germinal center (GC) B cells, from which most EBV-driven lymphomas arise, we generated a mouse model with conditional GC B-cell LMP1 and LMP2A coexpression. LMP1 and LMP2A had limited effects in immunocompetent mice...
March 28, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28351939/cytoreductive-conditioning-intensity-predicts-clonal-diversity-in-ada-scid-retroviral-gene-therapy-patients
#16
Aaron R Cooper, Georgia R Lill, Kit Shaw, Denise Carbonaro, Alejandra Davila, Robert Sokolic, Fabio Candotti, Matteo Pellegrini, Donald B Kohn
Retroviral gene therapy has proven efficacious for multiple genetic diseases of the hematopoietic system, but roughly half of clinical gene therapy trial protocols using gammaretroviral vectors have reported leukemias in some of the patients treated. In dramatic contrast, 39 ADA-SCID patients have been treated with four distinct gammaretroviral vectors without oncogenic consequence. We investigated clonal dynamics and diversity in a cohort of 15 ADA-SCID children treated with gammaretroviral vectors and found clear evidence of genotoxicity, indicated by numerous common integration sites near proto-oncogenes and by increased abundance of clones with integrations near MECOM and LMO2 These clones showed stable behavior over multiple years and never expanded to the point of dominance or dysplasia...
March 28, 2017: Blood
https://www.readbyqxmd.com/read/28346502/ebv-induces-persistent-nf-%C3%AE%C2%BAb-activation-and-contributes-to-survival-of-ebv-positive-neoplastic-t-or-nk-cells
#17
Honami Takada, Ken-Ichi Imadome, Haruna Shibayama, Mayumi Yoshimori, Ludan Wang, Yasunori Saitoh, Shin Uota, Shoji Yamaoka, Takatoshi Koyama, Norio Shimizu, Kouhei Yamamoto, Shigeyoshi Fujiwara, Osamu Miura, Ayako Arai
Epstein-Barr virus (EBV) has been detected in several T- and NK-cell neoplasms such as extranodal NK/T-cell lymphoma nasal type, aggressive NK-cell leukemia, EBV-positive peripheral T-cell lymphoma, systemic EBV-positive T-cell lymphoma of childhood, and chronic active EBV infection (CAEBV). However, how this virus contributes to lymphomagenesis in T or NK cells remains largely unknown. Here, we examined NF-κB activation in EBV-positive T or NK cell lines, SNT8, SNT15, SNT16, SNK6, and primary EBV-positive and clonally proliferating T/NK cells obtained from the peripheral blood of patients with CAEBV...
2017: PloS One
https://www.readbyqxmd.com/read/28344888/pre-emptive-and-therapeutic-adoptive-immunotherapy-for-nasopharyngeal-carcinoma-phenotype-and-effector-function-of-t-cells-impact-on-clinical-response
#18
Corey Smith, Victor Lee, Andrea Schuessler, Leone Beagley, Sweera Rehan, Janice Tsang, Vivian Li, Randal Tiu, David Smith, Michelle A Neller, Katherine K Matthews, Emma Gostick, David A Price, Jacqueline Burrows, Glen M Boyle, Daniel Chua, Benedict Panizza, Sandro V Porceddu, John Nicholls, Dora Kwong, Rajiv Khanna
Adoptive T cell therapy has emerged as a powerful strategy to treat human cancers especially haematological malignancies. Extension of these therapies to solid cancers remains a significant challenge especially in the context of defining immunological correlates of clinical responses. Here we describe results from a clinical study investigating autologous Epstein-Barr virus (EBV)-specific T cells generated using a novel AdE1-LMPpoly vector to treat patients with nasopharyngeal carcinoma (NPC) either pre-emptively in at-risk patients with no or minimal residual disease (N/MRD) or therapeutically in patients with active recurrent/metastatic disease (ARMD)...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28344876/2b4-sap-signaling-is-required-for-the-priming-of-naive-cd8-t-cells-by-antigen-expressing-b-cells-and-b-lymphoma-cells
#19
Yu-Hsuan Huang, Kevin Tsai, Sara Y Tan, Sohyeong Kang, Mandy L Ford, Kenneth W Harder, John J Priatel
Mutations in SH2D1A gene that encodes SAP (SLAM-associated protein) result in X-linked lymphoproliferative disease (XLP), a rare primary immunodeficiency disease defined by exquisite sensitivity to the B-lymphotropic Epstein-Barr virus (EBV) and B cell lymphomas. However, the precise mechanism of how the loss of SAP function contributes to extreme vulnerability to EBV and the development of B cell lymphomas remains unclear. Here, we investigate the hypothesis that SAP is critical for CD8(+) T cell immune surveillance of antigen (Ag)-expressing B cells or B lymphoma cells under conditions of defined T cell receptor (TCR) signaling...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28343630/de-novo-truncating-mutations-in-the-last-and-penultimate-exons-of-ppm1d-cause-an-intellectual-disability-syndrome
#20
Sandra Jansen, Sinje Geuer, Rolph Pfundt, Rachel Brough, Priyanka Ghongane, Johanna C Herkert, Elysa J Marco, Marjolein H Willemsen, Tjitske Kleefstra, Mark Hannibal, Joseph T Shieh, Sally Ann Lynch, Frances Flinter, David R FitzPatrick, Alice Gardham, Birgitta Bernhard, Nicola Ragge, Ruth Newbury-Ecob, Raphael Bernier, Malin Kvarnung, E A Helena Magnusson, Marja W Wessels, Marjon A van Slegtenhorst, Kristin G Monaghan, Petra de Vries, Joris A Veltman, Christopher J Lord, Lisenka E L M Vissers, Bert B A de Vries
Intellectual disability (ID) is a highly heterogeneous disorder involving at least 600 genes, yet a genetic diagnosis remains elusive in ∼35%-40% of individuals with moderate to severe ID. Recent meta-analyses statistically analyzing de novo mutations in >7,000 individuals with neurodevelopmental disorders highlighted mutations in PPM1D as a possible cause of ID. PPM1D is a type 2C phosphatase that functions as a negative regulator of cellular stress-response pathways by mediating a feedback loop of p38-p53 signaling, thereby contributing to growth inhibition and suppression of stress-induced apoptosis...
April 6, 2017: American Journal of Human Genetics
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