keyword
MENU ▼
Read by QxMD icon Read
search

BZLF1

keyword
https://www.readbyqxmd.com/read/28977893/combination-of-betulinic-acid-and-chidamide-synergistically-inhibits-epstein-barr-virus-replication-through-over-generation-of-reactive-oxygen-species
#1
Haibing Yu, Hongyu Zhang, Zhigang Chu, Qiongfang Ruan, Xueru Chen, Danli Kong, Xiaodong Huang, Huawen Li, Huanwen Tang, Hongjin Wu, Yifei Wang, Weiguo Xie, Yuanling Ding, Paul Yao
Epstein-Barr virus (EBV) has widely infected more than 90% of human populations. Currently, there is no efficient way to remove the virus because the EBV carriers are usually in a latent stage that allows them to escape the immune system and common antiviral drugs. In the effort to develop an efficient strategy for the removal of the EBV virus, we have shown that betulinic acid (BA) slightly suppresses EBV replication through SOD2 suppression with subsequent reactive oxygen species (ROS) generation and DNA damage in EBV-transformed LCL (lymphoblastoid cell line) cells...
September 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28874674/lytic-ebv-infection-investigated-by-detection-of-soluble-epstein-barr-virus-zebra-in-the-serum-of-patients-with-ptld
#2
Mohammed Habib, Marlyse Buisson, Julien Lupo, Felix Agbalika, Gérard Socié, Raphaele Germi, Monique Baccard, Berthe-Marie Imbert-Marcille, Jacques Dantal, Patrice Morand, Emmanuel Drouet
The ZEBRA protein (encoded by the BZLF1 gene), is the major transcription factor of EBV, expressed upon EBV lytic cycle activation. Several studies highlighted the critical role of EBV lytic infection as a risk factor for lymphoproliferative disorders like post-transplant lymphoproliferative disease (PTLD). Here, we use an antigen-capture ELISA assay specifically designed to detecting the circulating soluble ZEBRA (sZEBRA) in serum samples (threshold value determined at 40ng/mL). We retrospectively investigated a population of 66 transplanted patients comprising 35 PTLD...
September 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28707331/epstein-barr-virus-lytic-cycle-involvement-in-diffuse-large-b-cell-lymphoma
#3
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/28675108/radiation-induced-epstein-barr-virus-reactivation-in-gastric-cancer-cells-with-latent-ebv-infection
#4
Athira Nandakumar, Futoshi Uwatoko, Megumi Yamamoto, Kazuo Tomita, Hideyuki J Majima, Suminori Akiba, Chihaya Koriyama
Epstein-Barr virus, a ubiquitous human herpes virus with oncogenic activity, can be found in 6%-16% of gastric carcinomas worldwide. In Epstein-Barr virus-associated gastric carcinoma, only a few latent genes of the virus are expressed. Ionizing irradiation was shown to induce lytic Epstein-Barr virus infection in lymphoblastoid cell lines with latent Epstein-Barr virus infection. In this study, we examined the effect of ionizing radiation on the Epstein-Barr virus reactivation in a gastric epithelial cancer cell line (SNU-719, an Epstein-Barr virus-associated gastric carcinoma cell line)...
July 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28666266/combination-of-betulinic-acid-and-chidamide-synergistically-inhibits-epstein-barr-virus-replication-through-over-generation-of-reactive-oxygen-species
#5
Haibing Yu, Hongyu Zhang, Zhigang Chu, Qiongfang Ruan, Xueru Chen, Danli Kong, Xiaodong Huang, Huawen Li, Huanwen Tang, Hongjin Wu, Yifei Wang, Weiguo Xie, Yuanling Ding, Paul Yao
Epstein-Barr virus (EBV) has widely infected more than 90% of human populations. Currently, there is no efficient way to remove the virus because the EBV carriers are usually in a latent stage that allows them to escape the immune system and common antiviral drugs. In the effort to develop an efficient strategy for the removal of the EBV virus, we have shown that betulinic acid (BA) slightly suppresses EBV replication through SOD2 suppression with subsequent reactive oxygen species (ROS) generation and DNA damage in EBV-transformed LCL (lymphoblastoid cell line) cells...
June 27, 2017: Oncotarget
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
#6
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/28588024/bromodomain-and-extraterminal-inhibitors-block-the-epstein-barr-virus-lytic-cycle-at-two-distinct-steps
#7
COMPARATIVE STUDY
Kristin M Keck, Stephanie A Moquin, Amanda He, Samantha G Fernandez, Jessica J Somberg, Stephanie M Liu, Delsy M Martinez, Jj L Miranda
Lytic infection by the Epstein-Barr virus (EBV) poses numerous health risks, such as infectious mononucleosis and lymphoproliferative disorder. Proteins in the bromodomain and extraterminal (BET) family regulate multiple stages of viral life cycles and provide promising intervention targets. Synthetic small molecules can bind to the bromodomains and disrupt function by preventing recognition of acetylated lysine substrates. We demonstrate that JQ1 and other BET inhibitors block two different steps in the sequential cascade of the EBV lytic cycle...
August 11, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28456021/parp1-restricts-epstein-barr-virus-lytic-reactivation-by-binding-the-bzlf1-promoter
#8
Lena N Lupey-Green, Stephanie A Moquin, Kayla A Martin, Shane M McDevitt, Michael Hulse, Lisa B Caruso, Richard T Pomerantz, Jj L Miranda, Italo Tempera
The Epstein Barr virus (EBV) genome persists in infected host cells as a chromatinized episome and is subject to chromatin-mediated regulation. Binding of the host insulator protein CTCF to the EBV genome has an established role in maintaining viral latency type, and in other herpesviruses, loss of CTCF binding at specific regions correlates with viral reactivation. Here, we demonstrate that binding of PARP1, an important cofactor of CTCF, at the BZLF1 lytic switch promoter restricts EBV reactivation. Knockdown of PARP1 in the Akata-EBV cell line significantly increases viral copy number and lytic protein expression...
July 2017: Virology
https://www.readbyqxmd.com/read/28257801/analysis-of-bzlf1-mrna-detection-in-saliva-as-a-marker-for-active-replication-of-epstein-barr-virus
#9
Ursula Fagin, Linda Nerbas, Bastian Vogl, Wolfram J Jabs
Monitoring replicative Epstein-Barr virus (EBV) infection still remains a challenge in modern laboratory routine. The immediate-early protein BZLF1 mediates the switch between latent and replicate forms of EBV infection. The aim of this study was to analyze the feasibility of BZLF1 mRNA detection in saliva as a marker for active replication of the virus. Various specimens (saliva, plasma, PBMC) from 17 patients with EBV-induced infectious mononucleosis (IM) and 4 control patients were examined for expression of viral BZLF1 mRNA by means of real-time PCR...
June 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28228322/anti-tumour-research-of-recombinant-bcg-using-bzlf1-and-hgm-csf-fusion-genes
#10
Qing-Jie Xue, Yun-Qing Li, Chun-Qing Yang, Ting Chen, Xiu-Zhen Li, Baohua Cheng, Chun-Mei Wang
The random primer Oligo(dT)15 was used in RT-PCR to obtain cDNA from the human granulocyte macrophage colony stimulating factor (hGM-CSF) gene and the Epstein-Barr virus (EBV) gene BZLF1. Then, the sequence splicing overlap extension method was used to obtain a GCBF fusion gene containing a linker sequence that encoded the polypeptide (Gly4Ser)3. The GCBF fusion gene was inserted into pMV261, which was then transformed into competent E. coli DH5 alpha cells, and positive cells were selected based on kanamycin resistance on LB plates...
March 14, 2017: Vaccine
https://www.readbyqxmd.com/read/28179525/differentiation-dependent-lmp1-expression-is-required-for-efficient-lytic-epstein-barr-virus-reactivation-in-epithelial-cells
#11
Dhananjay M Nawandar, Makoto Ohashi, Reza Djavadian, Elizabeth Barlow, Kathleen Makielski, Ahmed Ali, Denis Lee, Paul F Lambert, Eric Johannsen, Shannon C Kenney
Epstein-Barr virus (EBV)-associated diseases of epithelial cells, including tumors that have latent infection, such as nasopharyngeal carcinoma (NPC), and oral hairy leukoplakia (OHL) lesions that have lytic infection, frequently express the viral latent membrane protein 1 (LMP1). In lytically infected cells, LMP1 expression is activated by the BRLF1 (R) immediate early (IE) protein. However, the mechanisms by which LMP1 expression is normally regulated in epithelial cells remain poorly understood, and its potential roles in regulating lytic reactivation in epithelial cells are as yet unexplored...
April 15, 2017: Journal of Virology
https://www.readbyqxmd.com/read/27813134/establishment-and-characterization-of-a-novel-hodgkin-lymphoma-cell-line-am-hlh-carrying-the-epstein-barr-virus-genome-integrated-into-the-host-chromosome
#12
Masahiko Hayashida, Masanori Daibata, Erika Tagami, Takahiro Taguchi, Fumiyo Maekawa, Kayo Takeoka, Katsuhiro Fukutsuka, Daiki Shimomura, Takamasa Hayashi, Yoshinori Iwatani, Hitoshi Ohno
We describe the establishment and characterization of a cell line, AM-HLH, obtained from a patient with Epstein-Barr virus-positive (EBV(+) ) nodular sclerosis-type Hodgkin lymphoma (HL). The cells were positive for CD2 and CD30 and negative for CD15. The immunoglobulin heavy- and κ light-chain genes were rearranged. The karyotype was of the triploid range. Southern blotting using the EBV terminal repeat probe detected 3 hybridizing bands that were identical to those of the parental HL material. The cells expressed EBV-encoded RNAs as well as latent genes (EBNA1, EBNA2, LMP1, and LMP2A) and lytic genes (BZLF1 and BALF2)...
November 4, 2016: Hematological Oncology
https://www.readbyqxmd.com/read/27595569/trichloromethane-fraction-of-incarvillea-compacta-induces-lytic-cytotoxicity-and-apoptosis-in-epstein-barr-virus-positive-gastric-cancer-ags-cells
#13
Lijing Zhang, Haifeng Wu, Guibo Sun, Xudong Xu, Xiaobo Sun, Li Cao
BACKGROUND: Incarvillea compacta Maxim. has been used to treat stomach disease in Tibet for many years. The objectives of this study were to explore the anti-cancer ability of trichloromethane fraction of I. compacta Maxim. roots (IC-TCL, R2) in EBV positive AGS cancer cells and its effects on cell cycle arrest, apoptosis and lytic induction. METHODS: MTT and trypan blue assays were to detect the inhibitory effects of different fraction in different cell lines. Hoechst 33342 staining, Annexin V-PE/7-AAD staining and DIOC6 staining were used to detect the apoptosis induction effects of R2...
September 5, 2016: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/27430892/decitabine-inhibits-tumor-cell-proliferation-and-up-regulates-e-cadherin-expression-in-epstein-barr-virus-associated-gastric-cancer
#14
Munetaka Nakamura, Jun Nishikawa, Mari Saito, Kouhei Sakai, Sho Sasaki, Shinichi Hashimoto, Takeshi Okamoto, Yutaka Suehiro, Takahiro Yamasaki, Isao Sakaida
The present study investigated the effect of a DNA demethylating agent, decitabine, against Epstein-Barr virus-associated gastric cancer (EBVaGC). Decitabine inhibited cell growth and induced G2/M arrest and apoptosis in EBVaGC cell lines. The expression of E-cadherin was up-regulated and cell motility was significantly inhibited in the cells treated with decitabine. The promoter regions of p73 and RUNX3 were demethylated, and their expression was up-regulated by decitabine. They enhanced the transcription of p21, which induced G2/M arrest and apoptosis through down-regulation of c-Myc...
March 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/27430429/cytotoxic-effects-of-nf%C3%A2-%C3%AE%C2%BAb-inhibitors-in-combination-with-anti%C3%A2-herpes-agents-on-epstein%C3%A2-barr-virus%C3%A2-positive-gastric-carcinoma-in%C3%A2-vitro
#15
Paula Ordonez, Athira Nandakumar, Chihaya Koriyama, Megumi Yamomoto, Suminori Akiba
Epstein-Barr virus (EBV) infection in tumor cells is usually restricted to the latent form, indicating that the induction of viral lytic infection may present a novel approach for the treatment of EBV‑associated tumors. By contrast, EBV lytic replication is inhibited by high‑levels of nuclear factor (NF)‑κB, which suggests that NF‑κB inhibitors may activate lytic replication from the latent form. In the current study, the addition of NF‑κB inhibitors (Bay11‑7082, Z‑LLF‑CHO and aspirin) was observed to induce the EBV lytic genes BZLF1, BRLF1 and BMRF1 in EBV‑positive gastric cancer (GC) cells...
September 2016: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27334596/bzlf1-attenuates-transmission-of-inflammatory-paracrine-senescence-in-epstein-barr-virus-infected-cells-by-downregulating-tumor-necrosis-factor-alpha
#16
Xubing Long, Yuqing Li, Mengtian Yang, Lu Huang, Weijie Gong, Ersheng Kuang
UNLABELLED: Recent studies have shown that inflammatory responses trigger and transmit senescence to neighboring cells and activate the senescence-associated secretory phenotype (SASP). Latent Epstein-Barr virus (EBV) infection induces increased secretion of several inflammatory factors, whereas lytic infections evade the antiviral inflammatory response. However, the changes in and roles of the inflammatory microenvironment during the switch between EBV life cycles remain unknown. In the present study, we demonstrate that latent EBV infection in EBV-positive cells triggers the SASP in neighboring epithelial cells...
September 1, 2016: Journal of Virology
https://www.readbyqxmd.com/read/27297582/lenalidomide-thalidomide-and-pomalidomide-reactivate-the-epstein-barr-virus-lytic-cycle-through-phosphoinositide-3-kinase-signaling-and-ikaros-expression
#17
Richard J Jones, Tawin Iempridee, Xiaobin Wang, Hans C Lee, Janet E Mertz, Shannon C Kenney, Heather C Lin, Veerabhadran Baladandayuthapani, Christopher W Dawson, Jatin J Shah, Donna M Weber, Robert Z Orlowski
PURPOSE: Lenalidomide, thalidomide, and pomalidomide (LTP) are immunomodulatory agents approved for use in multiple myeloma, but in some settings, especially with alkylating agents, an increase in Hodgkin lymphoma and other secondary primary malignancies (SPM) has been noted. Some of these malignancies have been linked to Epstein-Barr virus (EBV), raising the possibility that immunomodulatory drugs disrupt latent EBV infection. EXPERIMENTAL DESIGN: We studied the ability of LTP to reactivate latently infected EBV-positive cell lines in vitro and in vivo, and evaluated the EBV viral load in archived serum samples from patients who received a lenalidomide, thalidomide, and dexamethasone (LTD) combination...
October 1, 2016: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/27297580/validation-of-an-ifn%C3%AE-il2-fluorospot-assay-for-clinical-trial-monitoring
#18
Nina Körber, Uta Behrends, Alexander Hapfelmeier, Ulrike Protzer, Tanja Bauer
BACKGROUND: The FluoroSpot assay, an advancement of the ELISpot assay, enables simultaneous measurement of different analytes secreted at a single-cell level. This allows parallel detection of several cytokines secreted by immune cells upon antigen recognition. Easier standardization, higher sensitivity and reduced labour intensity render FluoroSpot assays an interesting alternative to flow-cytometry based assays for analysis of clinical samples. While the use of immunoassays to study immunological primary and secondary endpoints becomes increasingly attractive, assays used require pre-trial validation...
June 14, 2016: Journal of Translational Medicine
https://www.readbyqxmd.com/read/27039668/epstein-barr-virus-reactivation-is-induced-but-abortive-in-cutaneous-lesions-of-systemic-hydroa-vacciniforme-and-hypersensitivity-to-mosquito-bites
#19
Takenobu Yamamoto, Yoji Hirai, Tomoko Miyake, Toshihisa Hamada, Osamu Yamasaki, Shin Morizane, Wataru Fujimoto, Keiji Iwatsuki
BACKGROUND: Epstein-Barr virus (EBV)-associated T/natural killer (NK)-lymphoproliferative disorders (LPDs) include hydroa vacciniforme (HV) and hypersensitivity to mosquito bites (HMB). The pathomechanisms of these diseases are still unclear. OBJECTIVE: To understand the inflammatory process, we examined EBV reactivation markers, BZLF1 and BDRF1 mRNA in the tissue and blood from patients with EBV-associated T/NK-LPDs. METHODS: Sixty-four patients with EBV-associated LPDs and epithelial neoplasms, and EBV+ cell line cells were studied...
June 2016: Journal of Dermatological Science
https://www.readbyqxmd.com/read/26969667/comprehensive-profiling-of-ebv-gene-expression-in-nasopharyngeal-carcinoma-through-paired-end-transcriptome-sequencing
#20
Lijuan Hu, Zhirui Lin, Yanheng Wu, Juqin Dong, Bo Zhao, Yanbing Cheng, Peiyu Huang, Lihua Xu, Tianliang Xia, Dan Xiong, Hongbo Wang, Manzhi Li, Ling Guo, Elliott Kieff, Yixin Zeng, Qian Zhong, Musheng Zeng
The latent expression pattern of Epstein-Barr Virus (EBV) genes in nasopharyngeal carcinoma (NPC) has been extensively investigated, and the expression of several lytic genes in NPC has been reported. However, comprehensive information through EBV transcriptome analysis in NPC is limited. We performed paired-end RNA-seq to systematically and comprehensively characterize the expression of EBV genes in NPC tissue and C666-1 NPC cell line, which consistently carries EBV. In addition to the transcripts restricted to type II latency infection, the type III latency EBNA3s genes and a substantial number of lytic genes, such as BZLF1, BRLF1, and BMRF1, were detected through RNA-seq and were further verified in C666-1 cells and NPC tissue through realtime PCR...
March 2016: Frontiers of Medicine
keyword
keyword
64506
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"