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Clinical & Translational Immunology

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https://www.readbyqxmd.com/read/28791126/investigation-of-sphingosine-kinase-1-in-interferon-responses-during-dengue-virus-infection
#1
Amanda L Aloia, Julie K Calvert, Jennifer N Clarke, Lorena T Davies, Karla J Helbig, Stuart M Pitson, Jillian M Carr
Dengue virus (DENV) regulates sphingosine kinase (SK)-1 activity and chemical inhibition of SK1 reduces DENV infection. In primary murine embryonic fibroblasts (pMEFs) lacking SK1 however, DENV infection is enhanced and this is associated with induction of normal levels of interferon beta (IFN-β) but reduced levels of IFN-stimulated genes (ISGs). We have further investigated this link between SK1 and type I IFN responses. DENV infection downregulates cell-surface IFN-alpha receptor (IFNAR)1 in both wild-type (WT) and SK1(-)(/-) pMEF, but, consistent with poor ISG responses, shows reduced induction of phosphorylated (p)-STAT1 and key IFN regulatory factors (IRF)1 and -7 in SK1(-/-) pMEF...
July 2017: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/28791125/nkg2c-memory-like-nk-cells-contribute-to-the-control-of-hiv-viremia-during-primary-infection-optiprim-anrs-147
#2
Françoise Gondois-Rey, Antoine Chéret, Samuel Granjeaud, Françoise Mallet, Ghislain Bidaut, Camille Lécuroux, Mickaël Ploquin, Michaela Müller-Trutwin, Christine Rouzioux, Véronique Avettand-Fenoël, Alessandro Moretta, Gilles Pialoux, Cécile Goujard, Laurence Meyer, Daniel Olive
Natural-killer (NK) cells are important immune effectors during a viral infection. Latent CMV infection is widely spread and was demonstrated to shape the NK cell repertoire through the NKG2C receptor. An expansion of NKG2C(+) NK cells has been reported during primary HIV infection (PHI), but their role is not known. We previously found a correlation between the maturation state of the NK cell compartment and a lower viral load by studying patients from the ANRS 147 Optiprim trial. We investigated here extensively the NKG2C(+) NK cells at the time of PHI and its evolution after 3 months of early antiretroviral therapy (combination antiretroviral therapy (cART))...
July 2017: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/28791124/combining-dendritic-cells-and-b-cells-for-presentation-of-oxidised-tumour-antigens-to-cd8-t-cells
#3
Melanie L Grant, Nicholas Shields, Silke Neumann, Katrin Kramer, Andrea Bonato, Christopher Jackson, Margaret A Baird, Sarah L Young
The dendritic cell (DC) is the foremost antigen-presenting cell (APC) for ex vivo expansion of tumour-specific patient T cells. Despite marked responses in some patients following reinfusion of DC-activated autologous or HLA-matched donor T cells, overall response rates remain modest in solid tumours. Furthermore, most studies aim to generate immune responses against defined tumour-associated antigens (TAA), however, meta-analysis reveals that those approaches have less clinical success than those using whole tumour cells or their components...
July 2017: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/28748091/the-tetravalent-formulation-of-domain-iii-capsid-proteins-recalls-memory-b-and-t-cell-responses-induced-in-monkeys-by-an-experimental-dengue-virus-infection
#4
Lázaro Gil, Laura Lazo, Iris Valdés, Edith Suzarte, Phuong Yen, Rosa Ramírez, Mayling Álvarez, Le T Dung, Karem Cobas, Ernesto Marcos, Yusleidi Pérez, María G Guzmán, Ngyen D Hien, Gerardo Guillén, Lisset Hermida
Tetra DIIIC is a vaccine candidate against dengue virus (DENV) composed by four chimeric proteins that fuse the domain III of the envelope protein of each virus to the corresponding capsid protein. Containing B- and T-cell epitopes, these proteins form aggregates after the incubation with an immunostimulatory oligodeoxynucleotide, and their tetravalent formulation induces neutralizing antibodies and cellular immune response in mice and monkeys. Also, Tetra DIIIC protects mice after challenge with each DENV, and the monovalent formulation obtained from DENV-2 protects monkeys upon homologous viral challenge...
June 2017: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/28748090/erratum-defective-t-cell-control-of-epstein-barr-virus-infection-in-multiple-sclerosis
#5
Michael P Pender, Peter A Csurhes, Jacqueline M Burrows, Scott R Burrows
[This corrects the article DOI: 10.1038/cti.2016.87.].
June 2017: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/28695923/erratum-the-circulating-life-of-a-memory-t-follicular-helper-cell
#6
Cindy S Ma, Elissa K Deenick
[This corrects the article DOI: 10.1038/cti.2017.17.].
May 2017: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/28695922/erratum-tracking-the-t-cell-repertoire-after-adoptive-therapy
#7
Thomas S Watkins, John J Miles
[This corrects the article DOI: 10.1038/cti.2017.16.].
May 2017: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/28690850/agammaglobulinaemia-despite-terminal-b-cell-differentiation-in-a-patient-with-a-novel-lrba-mutation
#8
Nashat Al Sukaiti, Khwater AbdelRahman, Jalila AlShekaili, Sumaya Al Oraimi, Aisha Al Sinani, Nasser Al Rahbi, Vicky Cho, Matt Field, Matthew C Cook
Mutations in lipopolysaccharide-responsive vesicle trafficking, beach and anchor-containing protein (LRBA) cause immune deficiency and inflammation. Here, we are reporting a novel homozygous mutation in LRBA allele in 7-year-old Omani boy, born to consanguineous parents. He presented with type 1 diabetes, autoimmune haematological cytopenia, recurrent chest infections and lymphocytic interstitial lung disease. The patient was treated with CTLA4-Ig (abatacept) with good outcome every 2 weeks for a period of 3 months...
May 2017: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/28690849/altered-regulatory-t-cell-fractions-and-helios-expression-in-clinically-isolated-syndrome-clues-to-the-development-of-multiple-sclerosis
#9
Anderson P Jones, Stephanie Trend, Scott N Byrne, Marzena J Fabis-Pedrini, Sian Geldenhuys, David Nolan, David R Booth, William M Carroll, Robyn M Lucas, Allan G Kermode, Prue H Hart
Development of multiple sclerosis (MS) is frequently preceded by an acute or subacute neurological disturbance referred to as clinically isolated syndrome (CIS). The specific immunological disturbances present in CIS remain underexamined. This study analysed peripheral blood mononuclear cells from n=18 treatment-naive individuals with recently diagnosed CIS (<120 days) for disturbances in the phenotype of T regulatory (Treg), follicular T regulatory (Tfr), T helper (Th), follicular T helper (Tfh) and B cells...
May 2017: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/28690848/corrigendum-a-generalized-quantitative-antibody-homeostasis-model-antigen-saturation-natural-antibodies-and-a-quantitative-antibody-network
#10
József Prechl
[This corrects the article DOI: 10.1038/cti.2016.90.].
May 2017: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/28690847/the-circulating-life-of-a-memory-t-follicular-helper-cell
#11
EDITORIAL
Cindy S Ma, Elissa K Deenick
No abstract text is available yet for this article.
May 2017: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/28690846/tracking-the-t-cell-repertoire-after-adoptive-therapy
#12
EDITORIAL
Thomas S Watkins, John J Miles
No abstract text is available yet for this article.
May 2017: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/28690845/diagnostic-autoantibodies-for-autoimmune-liver-diseases
#13
REVIEW
Ban-Hock Toh
Autoimmune liver diseases are conditions of low prevalence that comprise the triad of autoimmune hepatitis, primary biliary cholangitis (cirrhosis) and primary sclerosing cholangitis and their poorly characterised overlapping syndromes. Diagnostic autoantibodies are associated with autoimmune hepatitis and primary biliary cholangitis but not with primary sclerosing cholangitis. Autoantibodies are useful disease markers that facilitate early diagnosis of autoimmune hepatitis and primary biliary cholangitis and allow for therapeutic intervention to prevent progression to liver cirrhosis and associated complications...
May 2017: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/28690844/pd1-functions-by-inhibiting-cd28-mediated-co-stimulation
#14
EDITORIAL
Jake S O'Donnell, Mark J Smyth, Michele W L Teng
No abstract text is available yet for this article.
May 2017: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/28690843/the-role-of-pd-1-in-regulation-of-macrophage-apoptosis-and-its-subversion-by-leishmania-donovani
#15
Shalini Roy, Purnima Gupta, Shreyasi Palit, Moumita Basu, Anindita Ukil, Pijush K Das
Programmed death-1 receptor (PD-1) expressed in many immune cells is known to trigger T-cell exhaustion but the significance of macrophage-associated PD-1 in relevance to macrophage apoptosis is not known. This study is aimed to delineate whether PD-1 pathway has any role in eliciting macrophage apoptosis and, if so, then how the intra-macrophage parasite, Leishmania donovani modulates PD-1 pathway for protecting its niche. Resting macrophages when treated with H2O2 showed increased PD-1 expression and apoptosis, which was further enhanced on PD-1 agonist treatment...
May 2017: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/28523126/transforming-growth-factor-%C3%AE-a-master-regulator-of-the-gut-microbiota-and-immune-cell-interactions
#16
REVIEW
David Bauché, Julien C Marie
The relationship between host organisms and their microbiota has co-evolved towards an inter-dependent network of mutualistic interactions. This interplay is particularly well studied in the gastrointestinal tract, where microbiota and host immune cells can modulate each other directly, as well as indirectly, through the production and release of chemical molecules and signals. In this review, we define the functional impact of transforming growth factor-beta (TGF-β) on this complex interplay, especially through its modulation of the activity of local regulatory T cells (Tregs), type 17 helper (Th17) cells, innate lymphoid cells (ILCs) and B cells...
April 2017: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/28435679/targeting-the-pro-inflammatory-factor-ccl2-mcp-1-with-bindarit-for-influenza-a-h7n9-treatment
#17
Stefan Wolf, Scott Johnson, Olivia Perwitasari, Suresh Mahalingam, Ralph A Tripp
Influenza A viruses are important human and animal pathogens. Seasonal influenza viruses cause infections every year, and occasionally zoonotic viruses emerge to cause pandemics with significantly higher morbidity and mortality rates. Three cases of laboratory confirmed human infection with avian influenza A (H7N9) virus were reported in 2013, and there have been several cases reported across South East Asia, and recently in North America. Most patients experience severe respiratory illness, with mortality rates approaching 40%...
March 2017: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/28435678/screening-for-immune-response-against-dengue-virus-in-vietnamese-non-human-primates-implications-for-vaccine-developers
#18
Laura Lazo Vázquez, Edith Suzarte Portal, Jorge Castro Velazco, Phuong Yen, Le Trung Dung, Lázaro Gil González, Iris Valdés Prado, Ernesto Marcos López, Karem Cobas Acosta, Nguyen Dang Hien, Gerardo Guillén Nieto, Lisset Hermida Cruz
One of the major problems faced for the development of a vaccine against Dengue virus is the lack of a suitable animal model. Although non-human primates do not show overt signs of disease, these animals develop viremia after the infection and are the best model to evaluate vaccine candidates against this pathogen. However, for that purpose, the screening of all animals is mandatory to discard those with previous natural immunity. The most common technique used in the screening is the plaque reduction neutralization test (PRNT)...
March 2017: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/28435677/control-of-immune-cell-entry-through-the-tumour-vasculature-a-missing-link-in-optimising-melanoma-immunotherapy
#19
REVIEW
Lih Yin Tan, Carmela Martini, Zvi G Fridlender, Claudine S Bonder, Michael P Brown, Lisa M Ebert
Metastatic melanoma remains a fatal disease to many worldwide, even after the breakthrough introduction of targeted therapies such as BRAF inhibitors and immune checkpoint blockade therapies such as CTLA-4 and PD-1 inhibitors. With advances in our understanding of this disease, as well as the increasing data gathered from patient studies, the significance of the host immune response to cancer progression and response to treatment is becoming clear. More specifically, the presence of intratumoral CD8(+) cytotoxic T-cells correlates with better prognosis whereas the accumulation of monocytes/macrophages and neutrophils in the tumour is often associated with worse prognosis...
March 2017: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/28435676/understanding-cd8-t-cell-responses-toward-the-native-and-alternate-hla-a-02-01-restricted-wt1-epitope
#20
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
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