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T cell subsets

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https://www.readbyqxmd.com/read/28529567/fuzheng-qingjie-granules-potentiate-the-anticancer-effect-of-cyclophosphamide-by-regulating-cellular-immune-function-and-inducing-apoptosis-in-hepatoma-22-tumor-bearing-mice
#1
Xu-Zheng Chen, Zhi-Yun Cao, You-Quan Zhang, Jin-Nong Li, Lian-Ming Liao, Jian Du
Fuzheng Qingjie (FZQJ) is a polyherbal Chinese medicine that has previously been implemented as an adjuvant therapy for gastrointestinal cancer. The present study investigated whether FZQJ is able to potentiate the anticancer effect of cyclophosphamide (CTX). Hepatoma 22 tumor-bearing mice were randomly divided into a vehicle group, CTX group, FZQJ group and combination (CTX+FZQJ) group. In addition, untreated mice without H22 cells served as blank controls. Seven days post-treatment, the mice were sacrificed and the tumors were weighed...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28526855/gut-homeostasis-and-regulatory-t-cell-induction-depend-on-molecular-chaperone-gp96-in-cd11c-cells
#2
Yunpeng Hua, Yi Yang, Shaoli Sun, Stephen Iwanowycz, Caroline Westwater, Boris Reizis, Zihai Li, Bei Liu
The intestinal immunity and tolerance are orchestrated by both the innate and the adaptive immune system. Intestinal professional antigen presenting cells (pAPCs) recognize and respond to the gut microbiota through multiple pattern-recognition receptors, including TLRs and NLRs. How gut pAPCs maintain mucosal homeostasis remains incompletely understood. Heat shock protein gp96, also known as grp94, is an essential immune chaperone for TLRs. However, the role of gp96 in regulating CD11c(+) APCs in the gut immunity and tolerance is unknown...
May 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28526759/il-2-high-tissue-resident-t-cells-in-the-human-liver-sentinels-for-hepatotropic-infection
#3
Laura J Pallett, Jessica Davies, Emily J Colbeck, Francis Robertson, Navjyot Hansi, Nicholas J W Easom, Alice R Burton, Kerstin A Stegmann, Anna Schurich, Leo Swadling, Upkar S Gill, Victoria Male, TuVinh Luong, Amir Gander, Brian R Davidson, Patrick T F Kennedy, Mala K Maini
The liver provides a tolerogenic immune niche exploited by several highly prevalent pathogens as well as by primary and metastatic tumors. We have sampled healthy and hepatitis B virus (HBV)-infected human livers to probe for a subset of T cells specialized to overcome local constraints and mediate immunity. We characterize a population of T-bet(lo)Eomes(lo)Blimp-1(hi)Hobit(lo) T cells found within the intrahepatic but not the circulating memory CD8 T cell pool expressing liver-homing/retention markers (CD69(+)CD103(+) CXCR6(+)CXCR3(+))...
May 19, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28526681/adoptive-transfer-of-phosphoantigen-specific-%C3%AE-%C3%AE-t-cell-subset-attenuates-mycobacterium-tuberculosis-infection-in-nonhuman-primates
#4
Arwa Qaqish, Dan Huang, Crystal Y Chen, Zhuoran Zhang, Richard Wang, Shengpu Li, Enzhuoa Yang, Yang Lu, Michelle H Larsen, William R Jacobs, Lixia Qian, James Frencher, Ling Shen, Zheng W Chen
The dominant Vγ2Vδ2 T cell subset recognizes phosphoantigen and exists only in humans and nonhuman primates. Despite the discovery of γδ T cells >30 y ago, a proof-of-concept study has not been done to prove the principle that the Vγ2Vδ2 T cell subset is protective against Mycobacterium tuberculosis and other infections. In this study, we used an adoptive cell-transfer strategy to define the protective role of Vγ2Vδ2 T cells in a primate tuberculosis (TB) model. Vγ2Vδ2 T cells for adoptive transfer displayed central/effector memory and mounted effector functions, including the production of anti-M...
May 19, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28526582/mait-cells-a-tailor-made-mate-in-the-ancient-battle-against-infectious-diseases
#5
REVIEW
Marcela de Lima Moreira, Moriya Tsuji, Alexandra Jane Corbett, Márcio Sobreira Silva Araújo, Andréa Teixeira-Carvalho, Olindo Assis Martins-Filho, Vanessa Peruhype-Magalhães, Jordana Grazziela Coelho-Dos-Reis
It has been almost two decades since the discovery of mucosal-associated invariant T (MAIT)-cells. Several advances in the field have been made such as the discovery of the antimicrobial activity of MAIT-cells, the abundance of these cells in human mucosa and in liver and the discovery of ligands able to bind MR1 and activate MAIT-cells. MAIT-cells are a unique subset of innate-like T-cells that express a canonical T-cell receptor with the alpha chain containing hAV7S2 and AJ33 in humans (TCRVα7.2Jα33) and respond to bacterial/fungus vitamin B2 metabolites by an MR1-dependent pathway...
May 16, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28526072/differences-in-serum-and-synovial-cd4-t-cells-and-cytokine-profiles-to-stratify-patients-with-inflammatory-osteoarthritis-and-rheumatoid-arthritis
#6
Alessandra Penatti, Federica Facciotti, Roberta De Matteis, Paola Larghi, Moira Paroni, Antonella Murgo, Orazio De Lucia, Massimiliano Pagani, Luca Pierannunzii, Marcello Truzzi, Andreea Ioan-Facsinay, Sergio Abrignani, Jens Geginat, Pier Luigi Meroni
BACKGROUND: The aim was to investigate CD4(+)T-cell subsets, immune cells and their cytokine profiles in blood and synovial compartments in rheumatoid arthritis (RA) and inflammatory osteoarthritis (OA) to define specific immune signatures. METHODS: Peripheral blood, synovial fluid (SF) and synovial membranes (SM) of RA and OA patients were analyzed. CD4(+)T-cell subset frequencies were determined by flow cytometry, and cytokine concentrations in serum and SF were measured by ELISA...
May 19, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28523202/identification-of-a-novel-alternatively-spliced-form-of-inflammatory-regulator-swap-70-like-adapter-of-t-cells
#7
Marie Hashimoto, Jun-Ichi Nagao, Shojiro Ikezaki, Sonoko Tasaki, Ken-Ichi Arita-Morioka, Yuka Narita, Tamaki Cho, Kenji Yuasa, Amnon Altman, Yoshihiko Tanaka
Activation of naive CD4(+) T cells results in the development of several distinct subsets of effector Th cells, including Th2 cells that play a pivotal role in allergic inflammation and helminthic infections. SWAP-70-like adapter of T cells (SLAT), also known as Def6 or IBP, is a guanine nucleotide exchange factor for small GTPases, which regulates CD4(+) T cell inflammatory responses by controlling Ca(2+)/NFAT signaling. In this study, we have identified a novel alternatively spliced isoform of SLAT, named SLAT2, which lacks the region encoded by exons 2-7 of the Def6 gene...
2017: International Journal of Inflammation
https://www.readbyqxmd.com/read/28522749/expansion-of-tumor-infiltrating-cd8-t-cells-expressing-pd-1-improves-the-efficacy-of-adoptive-t-cell-therapy
#8
Sarita M Fernandez-Poma, Diego Salas-Benito, Teresa Lozano, Noelia Casares, José-Ignacio Riezu-Boj, Uxua Mancheño, Edurne Elizalde, Diego Alignani, Natalia Zubeldia, Itziar Otano, Enrique Conde, Pablo Sarobe, Juan J Lasarte, Sandra Hervas-Stubbs
Recent studies have found that tumor-infiltrating lymphocytes (TIL) expressing PD-1 can recognize autologous tumor cells, suggesting that cells derived from PD-1+ TIL can be used in adoptive T cell therapy (ACT). However, no study thus far has evaluated the antitumor activity of PD-1-selected TIL in vivo. In two mouse models of solid tumors, we show that PD-1 allows identification and isolation of tumor-specific TIL without previous knowledge of their antigen specificities. Importantly, despite the high proportion of tumor-reactive T cells present in bulk CD8 TIL before expansion, only T cell products derived from sorted PD-1+, but not from PD-1- or bulk CD8 TIL, specifically recognized tumor cells...
May 18, 2017: Cancer Research
https://www.readbyqxmd.com/read/28522585/herpes-simplex-virus-glycoprotein-d-targets-a-specific-dendritic-cell-subset-and-improves-the-performance-of-vaccines-to-human-papillomavirus-associated-tumors
#9
Bruna F M M Porchia, Ana Carolina R Moreno, Rodrigo N Ramos, Mariana O Diniz, Laís Helena T M de Andrade, Daniela S Rosa, José Alexandre M Barbuto, Silvia B Boscardin, Luís Carlos S Ferreira
Cervical cancer is a major public health problem and one of the leading causes of cancer deaths in women. Virtually all cases of cervical cancer, as well as a growing share of anal and head/neck tumors, are associated with human papillomavirus (HPV) infection. Despite the effectiveness, the available prophylactic vaccines do not benefit women with cervical lesions or cancer. Therefore, the search of new immunotherapeutic approaches to treat HPV-induced tumors is still a priority. The present study characterizes a therapeutic antitumor vaccine based on the genetic fusion of the Herpes simplex virus-1 (HSV-1) glycoprotein D (gD) with the E7 oncoprotein from HPV-16 (gDE7)...
May 18, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28522576/natural-killer-cell-counts-are-associated-with-molecular-relapse-free-survival-after-imatinib-discontinuation-in-chronic-myeloid-leukemia-the-immunostim-study
#10
Delphine Rea, Guylaine Henry, Zena Khaznadar, Gabriel Etienne, François Guilhot, Franck Nicolini, Joelle Guilhot, Philippe Rousselot, Françoise Huguet, Laurence Legros, Martine Gardembas, Viviane Dubruille, Agnès Guerci-Bresler, Aude Charbonnier, Frédéric Maloisel, Jean-Christophe Ianotto, Bruno Villemagne, François-Xavier Mahon, Hélène Moins-Teisserenc, Nicolas Dulphy, Antoine Toubert
Despite leukemic stem cell persistence, patients with chronic myeloid leukemia who achieve and maintain deep molecular responses may successfully stop the tyrosine kinase inhibitor imatinib. However, questions remain unanswered regarding the biological basis of molecular relapse after imatinib cessation. In IMMUNOSTIM, we monitored 51 patients from the French Stop IMatinib trial for peripheral blood T-cells and natural killer-cells. Molecular relapse-free survival at 24 months was 45.1% (95% CI: 31.44%-58.75%)...
May 18, 2017: Haematologica
https://www.readbyqxmd.com/read/28522286/increased-proportions-of-functionally-impaired-regulatory-t-cell-subsets-in-systemic-sclerosis
#11
Emese Ugor, Diána Simon, Giovanni Almanzar, Ramóna Pap, József Najbauer, Péter Németh, Péter Balogh, Martina Prelog, László Czirják, Tímea Berki
Treg abnormalities have been implicated in the pathogenesis of systemic sclerosis (SSc). Treg subpopulations and their cytokines, IL-10 and TGF-β in the peripheral blood of early stage SSc patients were investigated. We hypothesized that epigenetically regulated methylation of the FOXP3 promoter and enhancer regions are altered in Tregs of SSc patients, which might be involved in the T cell imbalance. CD4+CD25+Foxp3+CD127- Treg cells were significantly elevated in patients with diffuse cutaneous SSc and in patients with anti-Scl-70/RNA-Pol-III autoantibody positivity and with lung fibrosis...
May 15, 2017: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/28521292/tumor-infiltrating-immune-cells-and-prognosis-in-gastric-cancer-a-systematic-review-and-meta-analysis
#12
Wen Jiang, Ke Liu, Qing Guo, Ji Cheng, Liming Shen, Yinghao Cao, Jing Wu, Jianguo Shi, Heng Cao, Bo Liu, Kaixiong Tao, Guobin Wang, Kailin Cai
Tumor-infiltrating immune cells are a pivotal component of the tumor microenvironment (TME), but their indicative role remains poorly defined. A meta-analysis was performed to reveal the prognostic efficiency of tumor-infiltrating immune cells in gastric cancer (GC). By searching PubMed and Embase, we identified a total of 35 eligible articles that involved 4888 patients. Random or fixed effect models were employed to extract pooled hazard ratios (HRs) with 95% confidence intervals (CIs). Our results indicated that high CD3+ lymphocyte infiltration in all the locations (AG), the tumor nest (TN), and the tumor stroma (TS) predicted better overall survival (OS) (HR=0...
May 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28521284/cytokine-mediated-activation-of-human-ex-vivo-expanded-v%C3%AE-9v%C3%AE-2-t-cells
#13
Eisuke Domae, Yuya Hirai, Takashi Ikeo, Seiji Goda, Yoji Shimizu
Vγ9Vδ2 T cells, the major subset of the human peripheral blood γδ T-cell, respond to microbial infection and stressed cells through the recognition of phosphoantigens. In contrast to the growing knowledge of antigen-mediated activation mechanisms, the antigen-independent and cytokine-mediated activation mechanisms of Vγ9Vδ2 T cells are poorly understood. Here, we show that interleukin (IL) -12 and IL-18 synergize to activate human ex vivo-expanded Vγ9Vδ2 T cells. Vγ9Vδ2 T cells treated with IL-12 and IL-18 enhanced effector functions, including the expression of IFN-γ and granzyme B, and cytotoxicity...
April 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28521236/targeting-t-cell-metabolism-to-regulate-t-cell-activation-differentiation-and-function-in-disease
#14
REVIEW
Chirag H Patel, Jonathan D Powell
It is becoming increasingly clear that metabolic reprogramming plays a critical role in T cell activation, differentiation and function. To this end, cellular metabolism not only meets the energetic demands of T cells but also provides critical substrates for their growth and function. Furthermore, metabolites themselves are emerging as key regulators of immune responses. As the details of how metabolic reprogramming regulates immune function are revealed, new potential targets for modulating immune responses have emerged...
May 15, 2017: Current Opinion in Immunology
https://www.readbyqxmd.com/read/28520232/human-ipsc-msc-derived-xenografts-modulate-immune-responses-by-inhibiting-the-cleavage-of-caspases
#15
Cheng-Lin Li, Yun Leng, Bin Zhao, Chang Gao, Fei-Fei Du, Ning Jin, Qi-Zhou Lian, Shuang-Yue Xu, Guo-Liang Yan, Jun-Jie Xia, Guo-Hong Zhuang, Qing-Ling Fu, Zhong-Quan Qi
Mesenchymal stem cells (MSCs) negatively modulate immune properties. Induced pluripotent stem cells (iPSCs)-derived MSCs are alternative source of MSCs. However, the effects of iPSC-MSCs on T cells phenotypes in vivo remain unclear. We established an iPSC-MSC-transplanted host versus graft reaction mouse model using subcapsular kidney injection. Th1, Th2, regulatory T cells (Treg), and Th17 phenotypes and their cytokines were investigated in vivo and in vitro. The role of caspases and the soluble factors involved in the effects of MSCs were examined...
May 18, 2017: Stem Cells
https://www.readbyqxmd.com/read/28516880/abatacept-therapy-reduces-cd28-cxcr5-follicular-helper-like-t-cells-in-patients-with-rheumatoid-arthritis
#16
Shunsuke Fukuyo, Shingo Nakayamada, Shigeru Iwata, Satoshi Kubo, Kazuyoshi Saito, Yoshiya Tanaka
OBJECTIVES: The characteristics of T cells targeted by abatacept (ABT) in cases of rheumatoid arthritis (RA) are still unknown. The goal of the study was to determine the pathogenicity of T cells and the predictors of therapeutic effects of ABT. METHODS: We analysed the peripheral T cell phenotype of 34 RA patients via flow cytometry. The correlation of the phenotypes of CD4+ T cells with clinical disease activity and change in CD4+ T cell subsets at baseline and 24 weeks after ABT treatment were evaluated...
April 27, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28515358/irf5-distinguishes-severe-asthma-in-humans-and-drives-th1-phenotype-and-airway-hyperreactivity-in-mice
#17
Timothy B Oriss, Mahesh Raundhal, Christina Morse, Rachael E Huff, Sudipta Das, Rachel Hannum, Marc C Gauthier, Kathryn L Scholl, Krishnendu Chakraborty, Seyed M Nouraie, Sally E Wenzel, Prabir Ray, Anuradha Ray
Severe asthma (SA) is a significant problem both clinically and economically, given its poor response to corticosteroids (CS). We recently reported a complex type 1-dominated (IFN-γ-dominated) immune response in more than 50% of severe asthmatics despite high-dose CS treatment. Also, IFN-γ was found to be critical for increased airway hyperreactivity (AHR) in our model of SA. The transcription factor IRF5 expressed in M1 macrophages can induce a Th1/Th17 response in cocultured human T cells. Here we show markedly higher expression of IRF5 in bronchoalveolar lavage (BAL) cells of severe asthmatics as compared with that in cells from milder asthmatics or healthy controls...
May 18, 2017: JCI Insight
https://www.readbyqxmd.com/read/28515356/licensing-delineates-helper-and-effector-nk-cell-subsets-during-viral-infection
#18
Anthony E Zamora, Ethan G Aguilar, Can M Sungur, Lam T Khuat, Cordelia Dunai, G Raymond Lochhead, Juan Du, Claire Pomeroy, Bruce R Blazar, Dan L Longo, Jeffrey M Venstrom, Nicole Baumgarth, William J Murphy
Natural killer (NK) cells can be divided into phenotypic subsets based on expression of receptors that bind self-MHC-I molecules, a concept termed licensing or education. Here we show NK cell subsets with different migratory, effector, and immunoregulatory functions in dendritic cell and antigen (ag)-specific CD8+ T cell responses during influenza and murine cytomegalovirus infections. Shortly after infection, unlicensed NK cells localized in draining lymph nodes and produced GM-CSF, which correlated with the expansion and activation of dendritic cells, and resulted in greater and sustained ag-specific T cell responses...
May 18, 2017: JCI Insight
https://www.readbyqxmd.com/read/28515279/regulatory-eosinophils-suppress-t-cells-partly-through-galectin-10
#19
Christine Lingblom, Jennie Andersson, Kerstin Andersson, Christine Wennerås
Eosinophils have the capacity to regulate the function of T cell subsets. Our aim was to test the hypothesis of the existence of a regulatory subset of eosinophils. Human eosinophils were incubated with T cells that were stimulated with allogeneic leukocytes or CD3/CD28 cross-linking. After 2 d of coculture, 11% of the eosinophils gained CD16 expression. A CD16(hi) subset of eosinophils, encompassing 1-5% of all eosinophils, was also identified in the blood of healthy subjects. FACS sorting showed that these CD16(hi) eosinophils were significantly stronger suppressors of T cell proliferation than were conventional CD16(neg) eosinophils...
May 17, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28515092/human-cd62l-dim-neutrophils-identified-as-a-separate-subset-by-proteome-profiling-and-in-vivo-pulse-chase-labelling
#20
Tamar Tak, Patrick Wijten, Marjolein Heeres, Peter Pickkers, Arjen Scholten, Albert J R Heck, Nienke Vrisekoop, Luke P Leenen, Jos Eacute A M Borghans, Kiki Tesselaar, Leo Koenderman
During acute inflammation three neutrophil subsets are found in the blood: neutrophils with a conventional segmented nucleus, neutrophils with a banded nucleus and T-cell-suppressing CD62L(dim) neutrophils with a high number of nuclear lobes. In this study (clinicaltrials.gov NCT01766414) we compared the in vivo kinetics and proteomes of banded, mature and hypersegmented neutrophils to determine whether these cell types represent truly different neutrophil subsets or reflect changes induced by LPS activation...
May 17, 2017: Blood
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