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Virus specific t cells

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https://www.readbyqxmd.com/read/29056540/a-phase-ii-study-of-methotrexate-etoposide-dexamethasone-and-pegaspargase-sandwiched-with-radiotherapy-in-the-treatment-of-newly-diagnosed-stage-ie-to-iie-extranodal-natural-killer-t-cell-lymphoma-nasal-type
#1
Peng-Peng Xu, Jie Xiong, Shu Cheng, Xia Zhao, Chao-Fu Wang, Gang Cai, Hui-Juan Zhong, Heng-Ye Huang, Jia-Yi Chen, Wei-Li Zhao
BACKGROUND: A phase II study of methotrexate, etoposide, dexamethasone, and pegaspargase (MESA) sandwiched with radiotherapy for newly diagnosed, stage IE-IIE extranodal natural-killer/T-cell lymphoma, nasal-type (ENKTL) was conducted to explore its clinical efficacy and safety, as well as novel serum biomarkers upon anti-metabolic treatment. METHODS: Four cycles of MESA sandwiched with radiotherapy were administered. The primary end point was the overall response rate (ORR)...
October 12, 2017: EBioMedicine
https://www.readbyqxmd.com/read/29056444/long-lived-tissue-resident-hiv-1-specific-memory-cd8-t-cells-are-generated-by-skin-immunisation-with-live-virus-vectored-microneedle-arrays
#2
Marija Zaric, Pablo Daniel Becker, Catherine Hervouet, Petya Kalcheva, Barbara Ibarzo Yus, Clement Cocita, Lauren Alexandra O'Neill, Sung-Yun Kwon, Linda Sylvia Klavinskis
The generation of tissue resident memory (TRM) cells at the body surfaces to provide a front line defence against invading pathogens represents an important goal in vaccine development for a wide variety of pathogens. It has been widely assumed that local vaccine delivery to the mucosae is necessary to achieve that aim. Here we characterise a novel micro-needle array (MA) delivery system fabricated to deliver a live recombinant human adenovirus type 5 vaccine vector (AdHu5) encoding HIV-1 gag. We demonstrate rapid dissolution kinetics of the microneedles in skin...
October 19, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29047317/varicella-and-herpes-zoster-vaccine-development-lessons-learned
#3
Charlotte Warren-Gash, Harriet Forbes, Judith Breuer
Introduction Before vaccination, varicella zoster virus (VZV), which is endemic worldwide, led to almost universal infection. This neurotropic virus persists lifelong by establishing latency in sensory ganglia, where its reactivation is controlled by VZV-specific T-cell immunity. Lifetime risk of VZV reactivation (zoster) is around 30%. Vaccine development was galvanised by the economic and societal burden of VZV, including debilitating zoster complications that largely affect older individuals. Areas covered We describe the story of development, licensing and implementation of live attenuated vaccines against varicella and zoster...
October 19, 2017: Expert Review of Vaccines
https://www.readbyqxmd.com/read/29046675/interpreting-t-cell-cross-reactivity-through-structure-implications-for-tcr-based-cancer-immunotherapy
#4
Dinler A Antunes, Maurício M Rigo, Martiela V Freitas, Marcus F A Mendes, Marialva Sinigaglia, Gregory Lizée, Lydia E Kavraki, Liisa K Selin, Markus Cornberg, Gustavo F Vieira
Immunotherapy has become one of the most promising avenues for cancer treatment, making use of the patient's own immune system to eliminate cancer cells. Clinical trials with T-cell-based immunotherapies have shown dramatic tumor regressions, being effective in multiple cancer types and for many different patients. Unfortunately, this progress was tempered by reports of serious (even fatal) side effects. Such therapies rely on the use of cytotoxic T-cell lymphocytes, an essential part of the adaptive immune system...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29046457/hiv-1-infection-of-primary-cd4-t-cells-regulates-the-expression-of-specific-herv-k-hml-2-elements
#5
George R Young, Sandra N Terry, Lara Manganaro, Alvaro Cuesta-Dominguez, Gintaras Deikus, Dabeiba Bernal-Rubio, Laura Campisi, Ana Fernandez-Sesma, Robert Sebra, Viviana Simon, Lubbertus C F Mulder
Endogenous retroviruses (ERVs) occupy extensive regions of the human genome. Although many of these retroviral elements have lost their ability to replicate, those whose insertion took place more recently, such as the HML-2 group of HERV-K elements, still retain intact open reading frames and the capacity to produce certain viral RNA and/or proteins. Transcription of these ERVs is, however, tightly regulated by dedicated epigenetic control mechanisms. Nonetheless, it has been reported that some pathologic states, such as viral infections and certain cancers, coincide with ERV expression suggesting transcriptional reawakening is possible...
October 18, 2017: Journal of Virology
https://www.readbyqxmd.com/read/29045899/early-transcriptional-divergence-marks-virus-specific-primary-human-cd8-t-cells-in-chronic-versus-acute-infection
#6
David Wolski, Peter K Foote, Diana Y Chen, Lia L Lewis-Ximenez, Catherine Fauvelle, Jasneet Aneja, Andreas Walker, Pierre Tonnerre, Almudena Torres-Cornejo, Daniel Kvistad, Sabrina Imam, Michael T Waring, Damien C Tully, Todd M Allen, Raymond T Chung, Jörg Timm, W Nicholas Haining, Arthur Y Kim, Thomas F Baumert, Georg M Lauer
Distinct molecular pathways govern the differentiation of CD8(+) effector T cells into memory or exhausted T cells during acute and chronic viral infection, but these are not well studied in humans. Here, we employed an integrative systems immunology approach to identify transcriptional commonalities and differences between virus-specific CD8(+) T cells from patients with persistent and spontaneously resolving hepatitis C virus (HCV) infection during the acute phase. We observed dysregulation of metabolic processes during early persistent infection that was linked to changes in expression of genes related to nucleosomal regulation of transcription, T cell differentiation, and the inflammatory response and correlated with subject age, sex, and the presence of HCV-specific CD4(+) T cell populations...
October 17, 2017: Immunity
https://www.readbyqxmd.com/read/29043774/augmenting-influenza-specific-t-cell-memory-generation-with-a-nkt-cell-dependent-glycolipid-peptide-vaccine
#7
Regan J Anderson, Jasmine Li, Lukasz Kedzierski, Benjamin J Compton, Colin M Hayman, Taryn L Osmond, Ching-Wen Tang, Kathryn J Farrand, Hui-Fern Koay, Catarina Filipa Dos Santos Sa E Almeida, Lauren R Holz, Geoffrey M Williams, Margaret A Brimble, Zhongfang Wang, Marios Koutsakos, Katherine Kedzierska, Dale I Godfrey, Ian F Hermans, Stephen J Turner, Gavin F Painter
The development of a universal vaccine for influenza A virus (IAV) that does not require seasonal modification is a long-standing health goal, particularly in the context of the increasing threat of new global pandemics. Vaccines that specifically induce T cell responses are of considerable interest because they can target viral proteins that are more like-ly to be shared between different virus strains and subtypes and hence provide effective cross-reactive IAV immunity. From a practical perspective, such vaccines should induce T cell responses with long-lasting memory, while also being simple to manufacture and cost-effective...
October 18, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/29038280/targeting-human-cytomegalovirus-infected-cells-by-redirecting-t-cells-using-an-anti-cd3-anti-gb-bispecific-antibody
#8
Weixu Meng, Aimin Tang, Xiaohua Ye, Xun Gui, Leike Li, Xuejun Fan, Robbie D Schultz, Daniel C Freed, Sha Ha, Dai Wang, Ningyan Zhang, Tong-Ming Fu, Zhiqiang An
Host immune response to human cytomegalovirus (HCMV) is effective against HCMV reactivation from latency although not sufficient to clear the virus. T cells are primarily responsible for control of the viral reactivation. When host immune system is compromised, as in transplant recipients with immunosuppression, HCMV reactivation and progressive infection can cause serious morbidity and mortality. Adoptive T cell therapy is effective for control of HCMV infection in transplant recipients. However, it is a highly personalized therapeutic regimen, and difficult to implement in routine clinical practice...
October 16, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29038024/structural-insights-of-a-self-assembling-9-residue-peptide-from-the-c-terminal-tail-of-the-sars-corona-virus-e-protein-in-dpc-and-sds-micelles-a-combined-high-and-low-resolution-spectroscopic-study
#9
Anirban Ghosh, Dipita Bhattacharyya, Anirban Bhunia
In recent years, several studies based on the interaction of self-assembling short peptides derived from Viroporins with model membranes, have improved our understanding of the molecular mechanism of Corona virus (CoV) infection under physiological conditions. In this study, we have characterized the mechanism of membrane interaction of a short, 9-residue peptide TK9 (T(55)VYVYSRVK(63)) that had been derived from the carboxyl terminal of the Severe Acute Respiratory Syndrome (SARS) Corona virus (SARS CoV) Envelope (E) protein...
October 13, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29037051/t-regulatory-cell-induced-foxp3-binds-the-il2-ifn%C3%AE-and-tnf%C3%AE-promoters-in-virus-specific-cd8-t-cells-from-feline-immunodeficiency-virus-infected-cats
#10
Yan Annie Wang, Mukta Nag, Joanne Tuohy, Kristina De Paris, Jonathan E Fogle
Polyfunctional CD8+ T cells play a critical role in controlling viremia during AIDS lentiviral infections. However, for most HIV infected individuals, virus-specific CD8+ T cells exhibit loss of polyfunctionality including loss of IL2, TNFα, and IFNγ. Using the feline immunodeficiency virus (FIV) model for AIDS lentiviral persistence, our laboratory has demonstrated that FIV-activated Treg cells target CD8+ T cells, leading to a reduction in IL2 and IFNγ production. Further, we have demonstrated that Treg cells induce expression of the repressive transcription factor, Foxp3 in CD8+ T cells...
October 17, 2017: AIDS Research and Human Retroviruses
https://www.readbyqxmd.com/read/29035907/relationship-between-pd-l1-expression-and-cd8-t-cell-immune-responses-in-hepatocellular-carcinoma
#11
Chun-Yu Huang, Ying Wang, Guang-Yu Luo, Feng Han, Yong-Qiang Li, Zhong-Guo Zhou, Guo-Liang Xu
As PD-1/PD-L1 immune checkpoint inhibitors exhibited promising clinical outcomes in various types of solid tumors, PD-1/PD-L1 blockades have been explored for the treatment of hepatocellular carcinoma (HCC). However, the association of PD-L1 with antitumor immunoregulation is not clearly defined in HCC. Here, we evaluated the characteristics of PD-L1 expression, CD8 T-cell infiltration and their relationship in HCC. A total of 411 resected tumor specimens from HCC patients were immunostained for PD-L1 and CD8...
October 13, 2017: Journal of Immunotherapy
https://www.readbyqxmd.com/read/29033361/binding-of-pld2-generated-phosphatidic-acid-to-kif5b-promotes-mt1-mmp-surface-trafficking-and-lung-metastasis-of-mouse-breast-cancer-cells
#12
Ziqing Wang, Feng Zhang, Jingquan He, Ping Wu, Li Wei Rachel Tay, Ming Cai, Weiqi Nian, Yuanyuan Weng, Li Qin, Jeffrey T Chang, Laura B McIntire, Gilbert Di Paolo, Jianming Xu, Junmin Peng, Guangwei Du
Little is known about the cellular events promoting metastasis. We show that knockout of phospholipase D2 (PLD2), which generates the signaling lipid phosphatidic acid (PA), inhibits lung metastases in the mammary tumor virus (MMTV)-Neu transgenic mouse breast cancer model. PLD2 promotes local invasion through the regulation of the plasma membrane targeting of MT1-MMP and its associated invadopodia. A liposome pull-down screen identifies KIF5B, the heavy chain of the motor protein kinesin-1, as a new PA-binding protein...
October 11, 2017: Developmental Cell
https://www.readbyqxmd.com/read/29032062/virus-specific-t-cells-broadening-applicability
#13
REVIEW
A John Barrett, Susan Prockop, Catherine M Bollard
Virus infection still remains an appreciable cause of morbidity and mortality after Hematopoietic stem cell transplant (HSCT). While pharmacotherapy and/or antibody therapy may help to prevent or treat viral disease, these drugs are expensive, toxic and often ineffective due to primary or secondary resistance. Further, effective treatments are limited for many infections (e.g. Ad and BKV), which are increasingly detected after alternative donor transplants. These deficiencies in conventional therapeutics have increased interest in an immunotherapeutic approach to viral disorders, leading to adoptive transfer of virus-specific cytotoxic T lymphocytes (VSTs), which can rapidly reconstitute antiviral immunity post-transplant without causing GvHD...
October 11, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29031786/differentiation-and-protective-capacity-of-virus-specific-cd8-t-cells-suggest-murine-norovirus-persistence-in-an-immune-privileged-enteric-niche
#14
Vesselin T Tomov, Olesya Palko, Chi Wai Lau, Ajinkya Pattekar, Yuhang Sun, Ralitza Tacheva, Bertram Bengsch, Sasikanth Manne, Gabriela L Cosma, Laurence C Eisenlohr, Timothy J Nice, Herbert W Virgin, E John Wherry
Noroviruses can establish chronic infections with active viral shedding in healthy humans but whether persistence is associated with adaptive immune dysfunction is unknown. We used genetically engineered strains of mouse norovirus (MNV) to investigate CD8(+) T cell differentiation during chronic infection. We found that chronic infection drove MNV-specific tissue-resident memory (Trm) CD8(+) T cells to a differentiation state resembling inflationary effector responses against latent cytomegalovirus with only limited evidence of exhaustion...
October 17, 2017: Immunity
https://www.readbyqxmd.com/read/29031635/correlation-of-altered-expression-of-a-long-non-coding-rna-neat1-in-peripheral-blood-mononuclear-cells-with-dengue-disease-progression
#15
Abhay Deep Pandey, Saptamita Goswami, Shweta Shukla, Shaoli Das, Suman Ghosal, Manisha Pal, Bhaswati Bandyopadhyay, Vishnampettai Ramachandran, Nandita Basu, Vikas Sood, Priyanka Pandey, Jayprokas Chakrabarti, Sudhanshu Vrati, Arup Banerjee
The association of long non-coding RNAs (lncRNAs) with dengue disease progression is currently unknown. Therefore, the present study aimed to identify lncRNAs in different categories of dengue patients and evaluate their association with dengue disease progression. Herein, we examined the expression profiles of lncRNAs and protein-coding genes between other febrile illness (OFI) and different grade of dengue patients through high-throughput RNA sequencing. We identified Nuclear Enriched Abundant Transcript 1 (NEAT1) as one of the differentially expressed lncRNAs (adjusted P ≤ 0...
October 12, 2017: Journal of Infection
https://www.readbyqxmd.com/read/29029951/intrahepatic-v%C3%AE-9v%C3%AE-2-t-cells-from-hcv-infected-patients-show-an-exhausted-phenotype-but-can-inhibit-hcv-replication
#16
E Cimini, V Bordoni, A Sacchi, U Visco-Comandini, M Montalbano, C Taibi, R Casetti, E Lalle, G D'Offizi, M R Capobianchi, C Agrati
Hepatitis C virus (HCV) persistence results from inefficiencies of both innate and adaptive immune responses to eradicate the infection. A functional impairment of circulating Vγ9Vδ2 T-cells was described but few data are available on Vγ9Vδ2 T-cells in the liver that, however, represents the battlefield in the HCV/host interaction. Aim of this work was to compare circulating and intrahepatic Vγ9Vδ2 T-cells in chronic HCV-infected patients (HCV(pos)) and in HCV-negative (HCV(neg)) subjects. Phenotypic and functional analysis was performed by flow cytometry...
October 10, 2017: Virus Research
https://www.readbyqxmd.com/read/29028787/relationship-between-pd-l1-expression-and-cd8-t-cell-immune-responses-in-hepatocellular-carcinoma
#17
Chun-Yu Huang, Ying Wang, Guang-Yu Luo, Feng Han, Yong-Qiang Li, Zhong-Guo Zhou, Guo-Liang Xu
As PD-1/PD-L1 immune checkpoint inhibitors exhibited promising clinical outcomes in various types of solid tumors, PD-1/PD-L1 blockades have been explored for the treatment of hepatocellular carcinoma (HCC). However, the association of PD-L1 with antitumor immunoregulation is not clearly defined in HCC. Here, we evaluated the characteristics of PD-L1 expression, CD8 T-cell infiltration and their relationship in HCC. A total of 411 resected tumor specimens from HCC patients were immunostained for PD-L1 and CD8...
November 2017: Journal of Immunotherapy
https://www.readbyqxmd.com/read/29028182/hypothesis-rna-and-dna-viral-sequence-integration-into-the-mammalian-host-genome-supports-long-term-b-cell-and-t-cell-adaptive-immunity
#18
Julia L Hurwitz, Bart G Jones, Emmanuelle Charpentier, David L Woodland
Viral sequence integration into the mammalian genome has long been perceived as a health risk. In some cases, integration translates to chronic viral infection, and in other instances, oncogenic gene mutations occur. However, research also shows that animal cells can benefit from integrated viral sequences (e.g., to support host cell development or to silence foreign invaders). Here we propose that, comparable with the clustered regularly interspaced short palindromic repeats that provide bacteria with adaptive immunity against invasive bacteriophages, animal cells may co-opt integrated viral sequences to support immune memory...
October 13, 2017: Viral Immunology
https://www.readbyqxmd.com/read/29026141/combined-skin-and-muscle-vaccination-differentially-impact-the-quality-of-effector-t-cell-functions-the-cuthivac-001-randomized-trial
#19
G Haidari, A Cope, A Miller, S Venables, C Yan, H Ridgers, K Reijonen, D Hannaman, A Spentzou, P Hayes, G Bouliotis, A Vogt, S Joseph, B Combadiere, S McCormack, R J Shattock
Targeting of different tissues via transcutaneous (TC), intradermal (ID) and intramuscular (IM) injection has the potential to tailor the immune response to DNA vaccination. In this Phase I randomised controlled clinical trial in HIV-1 negative volunteers we investigate whether the site and mode of DNA vaccination influences the quality of the cellular immune responses. We adopted a strategy of concurrent immunization combining IM injection with either ID or TC administration. As a third arm we assessed the response to IM injection administered with electroporation (EP)...
October 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29024228/de-novo-hepatocellular-carcinoma-post-multivisceral-transplantation-in-a-child
#20
P Tran, S Zhou, L Wang, M Finegold, L Mascarenas, S Alexopolous, Y Genyk, N Kerkar
De novo hepatocellular carcinoma (HCC) post-transplantation in patients without viral hepatitis is extremely rare, with only three reported adult cases in the English literature. Here, we present a case of de novo HCC that developed in a 7-year-old female, who at 8 months of age received a liver, small bowel, spleen, and pancreas transplantation 6.5 years ago for gastroschisis and total parenteral nutrition (TPN)-related cirrhosis. The post-transplant course was complicated by Epstein-Barr virus (EBV) infection, post-transplant lymphoproliferative disease, and subsequent development of multifocal EBV-associated post-transplant smooth muscle tumors (EBV-PTSMT) in the small bowel 1 year and 10 months after transplantation, respectively...
November 2017: Pediatric Transplantation
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