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https://www.readbyqxmd.com/read/28109145/-short-term-use-of-rapamycin-combined-with-tregs-prolongs-mouse-cardiac-graft-survival-but-attenuates-recipient-s-anti-tumor-immunity
#1
Ting Yan, Chen Luo, Xianmo Yang, Lei Ji, Shiqiao Luo
Objective To study the effect of short-term use of rapamycin(Rap) combined with regulatory T cells (Tregs) on the long-time survival of allogeneic mouse cardiac transplant, and its impact on the anti-tumor immunity of recipient. MethodsMouse Tregs were purified from recipients' spleen by magnetic activated cell sorting (MACS), and expanded by CD3/CD28 monoclonal antibody immunomagnetic beads and 2000 U/mL recombinant mouse IL-2 (rmIL-2) ex vivo. The purity was tested by fluorescence-activated cell sorting (FACS)...
February 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28109143/-decreased-number-and-immune-activity-of-splenic-t-lymphocytes-in-mice-exposed-to-hypoxia-at-high-altitude
#2
Xiaona Zhang, Jidong Li, Fangjie Hu, Shilan Gao, Xiaoyan Pu, Sheng Yong
Objective To explore the changes of splenic T lymphocyte subsets and functions in mice under high-altitude hypoxic conditions. Methods After mice were exposed to an altitude of 400 m, 2200 m and 4200 m for 30 days, ELISA was used to detect the concentrations of interleukin-4 (IL-4) and interferon-γ (IFN-γ) in the cultured splenocyte supernatant; MTT assay was used to analyze the proliferation of splenic T lymphocytes; flow cytometry was performed to examine the alterations of splenic T lymphocyte subsets...
February 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28108653/galectin-1-expression-is-associated-with-tumour-immunity-and-prognosis-in-gingival-squamous-cell-carcinoma
#3
Yuri Noda, Mitsunobu Kishino, Sunao Sato, Katsutoshi Hirose, Manabu Sakai, Yasuo Fukuda, Shumei Murakami, Satoru Toyosawa
AIMS: Galectin-1 (Gal-1) is a β-galactoside-binding protein that overexpresses in cancer and plays pivotal roles in tumour progression. Gal-1 regulates angiogenesis and invasiveness, and suppresses tumour immunity by inducing T cell apoptosis. Several studies have examined the relationship between Gal-1 and tumour immunosuppression in vivo, but they have not examined the clinicopathological relationship between Gal-1 expression and apoptotic T cell number in human tissue. In this study, we investigated the association between Gal-1 expression and apoptotic T cells of gingival squamous cell carcinoma (GSCC), as well as other clinicopathological factors...
February 2017: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28108611/reversal-of-diabetes-in-nod-mice-by-clinical-grade-proinsulin-and-il-10-secreting-lactococcus-lactis-in-combination-with-low-dose-anti-cd3-depends-on-the-induction-of-foxp3-positive-t-cells
#4
Tatiana Takiishi, Dana Paulina Cook, Hannelie Korf, Guido Sebastiani, Francesca Mancarella, João Paulo Monteiro Carvalho Mori Cunha, Clive Wasserfall, Noelia Casares, Juan José Lasarte, Lothar Steidler, Pieter Rottiers, Francesco Dotta, Conny Gysemans, Chantal Mathieu
The introduction of β-cell autoantigens via the gut through Lactococcus lactis (L. lactis) has been demonstrated to be a promising approach for diabetes reversal in NOD mice. Here we show that a combination therapy of low-dose anti-CD3 with a clinical-grade self-containing L. lactis, appropriate for human application, secreting human proinsulin and interleukin-10, cured 66% of mice with new-onset diabetes, which is comparable to therapy results with plasmid-driven L. lactis Initial blood glucose concentrations (<350 mg/dL) and insulin autoantibody positivity were predictors of the stable reversal of hyperglycemia, and decline in insulin autoantibody positivity was an immune biomarker of therapeutic outcome...
February 2017: Diabetes
https://www.readbyqxmd.com/read/28108544/the-interplay-between-neutrophils-and-cd8-t-cells-improves-survival-in-human-colorectal-cancer
#5
Valeria Governa, Emanuele Trella, Valentina Mele, Luigi Tornillo, Francesca Amicarella, Eleonora Cremonesi, Maunele Giuseppe Muraro, Hui Xu, Raoul Droeser, Silvio Raffael Däster, Martin Bolli, Raffaele Rosso, Daniel Oertli, Serenella Eppenberger-Castori, Luigi Terracciano, Giandomenica Iezzi, Giulio C Spagnoli
PURPOSE: Tumor infiltration by different T lymphocyte subsets is known to be associated with favorable prognosis in colorectal cancer (CRC). Still debated is the role of innate immune system. We investigated clinical relevance, phenotypes and functional features of CRC infiltrating CD66b+ neutrophils and their crosstalk with CD8+ T cells. EXPERIMENTAL DESIGN: CD66b+ and CD8+ cell infiltration was analyzed by immunohistochemistry on a tissue microarray including >650 evaluable CRC samples...
January 20, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28108005/in-vitro-allogeneic-immune-cell-response-to-mesenchymal-stromal-cells-derived-from-human-adipose-in-patients-with-rheumatoid-arthritis
#6
P Usha Shalini, J V S Vidyasagar, Lakshmi Kumari Kona, Meenakshi Ponnana, Lakshmi Kiran Chelluri
We investigated the regulatory activity of human adipose-derived mesenchymal stromal cells (MSCs) (n=10) towards immune cells in a cohort of 84 rheumatoid arthritis (RA) patients, 36 apparently healthy controls. We co-cultured MSCs with lymphocyte subsets of T, B, and T regulatory cells (Tregs). Levels of the pro- and anti-inflammatory markers (tumor necrosis factor alpha (TNF-α), interferon gamma (IFN-γ), and interleukin-10 (IL-10)) were estimated in serum and co-culture supernatants. The study revealed a two-fold increase in the proportion of Tregs and an increased level of CD4(+)CD25(+)FoxP3...
January 12, 2017: Cellular Immunology
https://www.readbyqxmd.com/read/28107450/systemic-t-cells-immunosuppression-of-glioma-stem-cell-derived-exosomes-is-mediated-by-monocytic-myeloid-derived-suppressor-cells
#7
Rossana Domenis, Daniela Cesselli, Barbara Toffoletto, Evgenia Bourkoula, Federica Caponnetto, Ivana Manini, Antonio Paolo Beltrami, Tamara Ius, Miran Skrap, Carla Di Loreto, Giorgia Gri
A major contributing factor to glioma development and progression is its ability to evade the immune system. Nano-meter sized vesicles, exosomes, secreted by glioma-stem cells (GSC) can act as mediators of intercellular communication to promote tumor immune escape. Here, we investigated the immunomodulatory properties of GCS-derived exosomes on different peripheral immune cell populations. Healthy donor peripheral blood mononuclear cells (PBMCs) stimulated with anti-CD3, anti-CD28 and IL-2, were treated with GSC-derived exosomes...
2017: PloS One
https://www.readbyqxmd.com/read/28107393/t-cell-subset-and-stimulation-strength-dependent-modulation-of-t-cell-activation-by-kv1-3-blockers
#8
Wai-Ping Fung-Leung, Wilson Edwards, Yi Liu, Karen Ngo, Julianty Angsana, Glenda Castro, Nancy Wu, Xuejun Liu, Ronald V Swanson, Alan D Wickenden
Kv1.3 is a voltage-gated potassium channel expressed on T cells that plays an important role in T cell activation. Previous studies have shown that blocking Kv1.3 channels in human T cells during activation results in reduced calcium entry, cytokine production, and proliferation. The aim of the present study was to further explore the effects of Kv1.3 blockers on the response of different human T cell subsets under various stimulation conditions. Our studies show that, unlike the immune suppressor cyclosporine A, the inhibitory effect of Kv1...
2017: PloS One
https://www.readbyqxmd.com/read/28107375/narcolepsy-type-1-is-associated-with-a-systemic-increase-and-activation-of-regulatory-t-cells-and-with-a-systemic-activation-of-global-t-cells
#9
Michel Lecendreux, Guillaume Churlaud, Fabien Pitoiset, Armelle Regnault, Tu Anh Tran, Roland Liblau, David Klatzmann, Michelle Rosenzwajg
Narcolepsy is a rare neurologic disorder characterized by excessive daytime sleepiness, cataplexy and disturbed nocturnal sleep patterns. Narcolepsy type 1 (NT1) has been shown to result from a selective loss of hypothalamic hypocretin-secreting neurons with patients typically showing low CSF-hypocretin levels (<110 pg/ml). This specific loss of hypocretin and the strong association with the HLA-DQB1*06:02 allele led to the hypothesis that NT1 could be an immune-mediated pathology. Moreover, susceptibility to NT1 has recently been associated with several pathogens, particularly with influenza A H1N1 virus either through infection or vaccination...
2017: PloS One
https://www.readbyqxmd.com/read/28106253/massive-plasmablast-response-elicited-in-the-acute-phase-of-hantavirus-pulmonary-syndrome
#10
Marina García, Ayelén Iglesias, Verónica I Landoni, Carla Bellomo, Agostina Bruno, María Teresa Córdoba, Luciana Balboa, Gabriela C Fernández, María Del Carmen Sasiain, Valeria P Martínez, Pablo Schierloh
Beside its key diagnostic value, the humoral immune response is thought to play a protective role in Hantavirus Pulmonary Syndrome (HPS). However, little is known about the cell source of these antibodies during ongoing human infection. Herein we characterized B cell subsets circulating in Andes virus-infected patients. A notable potent plasmablast (PB) response that increased 100-fold over the baseline levels was observed around one week after the onset of symptoms. These PB present a CD3(neg) CD19(low) CD20(neg) CD38(hi) CD27(hi) CD138(+/-) IgA(+/-) surface phenotype together with the presence of cytoplasmic functional immunoglobulins...
January 20, 2017: Immunology
https://www.readbyqxmd.com/read/28106145/cd1-and-cd1-porcine-blood-dendritic-cells-are-enriched-for-the-orthologues-of-the-two-major-mammalian-conventional-subsets
#11
Jane C Edwards, Helen E Everett, Miriam Pedrera, Helen Mokhtar, Emanuele Marchi, Ferran Soldevila, Daryan A Kaveh, Philip J Hogarth, Helen L Johns, Javier Nunez-Garcia, Falko Steinbach, Helen R Crooke, Simon P Graham
Conventional dendritic cells (cDC) are professional antigen-presenting cells that induce immune activation or tolerance. Two functionally specialised populations, termed cDC1 and cDC2, have been described in humans, mice, ruminants and recently in pigs. Pigs are an important biomedical model species and a key source of animal protein; therefore further understanding of their immune system will help underpin the development of disease prevention strategies. To characterise cDC populations in porcine blood, DC were enriched from PBMC by CD14 depletion and CD172a enrichment then stained with lineage mAbs (Lin; CD3, CD8α, CD14 and CD21) and mAbs specific for CD172a, CD1 and CD4...
January 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28105976/early-subretinal-allograft-rejection-is-characterized-by-innate-immune-activity
#12
Kevin P, Toby M, Deborah M, Cliona O Farrelly, David J
<p>Successful subretinal transplantation is limited by considerable early graft loss, despite pharmacological suppression of adaptive immunity. We postulated that early innate immune activity is a dominant factor in determining graft survival and chose a non-immunosuppressed mouse model of retinal pigment epithelial (RPE) cell transplantation to explore this.</p><p>Expression of almost all measured cytokines by DH01 RPE cells increased significantly following graft preparation and the neutrophil chemoattractant, KC/GRO/CINC, was most significantly increased...
January 20, 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28105230/dendritic-cell-activated-cytokine-induced-killer-cell-mediated-immunotherapy-is-safe-and-effective-for-cancer-patients-65-years-old
#13
Yanfeng Liu, Haibo Liu, Hausheng Liu, Pengcheng He, Jing Li, Xin Liu, Limei Chen, Mengchang Wang, Jiejing Xi, Huaiyu Wang, Haitao Zhang, Ying Zhu, Wei Zhu, Jing Ning, Caili Guo, Chunhong Sun, Mei Zhang
Individuals >65 years old account for a large proportion of cancer patients, and usually have poor prognoses due to relative weaker physiological function and lower drug tolerance. To characterize the efficacy and safety of dendritic cell (DC)-activated cytokine-induced killer cell (CIK)-mediated treatment, and develop an adoptive immunotherapy for cancer patients >65 years old, a retrospective study was performed in 58 cancer sufferers who received 1-4 cycles of DC-activated CIK (DC-CIK) treatment and evaluated the response (tumor remission rate) and toxicity (side effects to the treatment)...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28105088/clinical-significance-of-lymphocyte-subset-changes-in-hemophagocytic-lymphohistiocytosis-of-children
#14
Qi An, Yi Wang, Shaoyan Hu, Daihua Fang, Chengmin Xuan, Shumei Xu, Mingwei Jin, Qiang Ji
In order to examine the role of peripheral blood lymphocyte subsets on the diagnosis, treatment and prognosis of hemophagocytic lymphohistiocytosis (HLH), 30 affected children during the acute period of the disease and 30 healthy children within the same age range were selected to test their peripheral blood lymphocyte subsets using flow cytometry and compare these subsets. At the same time, the peripheral blood lymphocyte subsets of 20 children with complete remission from HLH were compared to those of 10 cases who succumbed to the disease...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28102549/enhancing-capillary-blood-collection-the-influence-of-nicotinic-acid-and-nonivamide
#15
Christian Moro, Jessica Bass, Anna Mae Scott, Elisa F D Canetti
BACKGROUND: Nicotinic acid and nonivamide are often applied topically during capillary blood collection to induce vasodilation. These molecules may have an influence on immune effector cell activity in nearby tissues. This study investigates whether the induction of flushing by nicotinic acid and nonivamide causes an inflammatory response that influences the composition of immune cells present in a capillary blood sample. METHODS: Females aged between 18 and 30 years old provided capillary blood samples...
January 19, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28101356/a-case-report-of-primary-cutaneous-natural-killer-t-cell-lymphoma
#16
Chen Tian, Yong Yu, Yizhuo Zhang
Primary cutaneous extranodal natural killer/T-cell lymphoma, nasal type (ENKL-NT) is a relatively rare disease associated with aggressive tumor-cell behavior and poor prognosis. Progress in immunohistochemistry has improved the identification of ENKL-NT. The present case study reported on a 64-year-old female patient presenting with several red nodular lesions on the neck developed over four months. Cutaneous biopsy revealed these cells were positive for CD3, CD56, CD5, CD8 and negative for CD2, CD34, CD7, CD20 and Granzyme B...
December 2016: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28100889/cotransfer-of-regulatory-t-cells-improve-the-therapeutic-effectiveness-of-mesenchymal-stem-cells-in-treating-a-colitis-mouse-model
#17
Yang Yu, Tianyu Zhao, Deqin Yang
Inflammatory bowel disease (IBD) is a severe inflammatory condition in the colon. To date, clinical solutions for this disease have been limited. Mesenchymal stem cells (MSCs), multipotential cells with immune regulation and anti-inflammatory functions, have been applied to treatment of IBD. However, the therapeutic effectiveness of MSCs still needs to be improved. Here, we were interested in whether regulatory T cells (Tregs) could enhance the immune regulation function of MSCs in treatment of mouse colitis...
January 19, 2017: Experimental Animals
https://www.readbyqxmd.com/read/28100833/follicular-cd8-t-cells-accumulate-in-hiv-infection-and-can-kill-infected-cells-in-vitro-via-bispecific-antibodies
#18
Constantinos Petrovas, Sara Ferrando-Martinez, Michael Y Gerner, Joseph P Casazza, Amarendra Pegu, Claire Deleage, Arik Cooper, Jason Hataye, Sarah Andrews, David Ambrozak, Perla M Del Río Estrada, Eli Boritz, Robert Paris, Eirini Moysi, Kristin L Boswell, Ezequiel Ruiz-Mateos, Ilias Vagios, Manuel Leal, Yuria Ablanedo-Terrazas, Amaranta Rivero, Luz Alicia Gonzalez-Hernandez, Adrian B McDermott, Susan Moir, Gustavo Reyes-Terán, Fernando Docobo, Giuseppe Pantaleo, Daniel C Douek, Michael R Betts, Jacob D Estes, Ronald N Germain, John R Mascola, Richard A Koup
Cytolytic CD8 T cells play a crucial role in the control and elimination of virus-infected cells and are a major focus of HIV cure efforts. However, it has been shown that HIV-specific CD8 T cells are infrequently found within germinal centers (GCs), a predominant site of active and latent HIV infection. We demonstrate that HIV infection induces marked changes in the phenotype, frequency, and localization of CD8 T cells within the lymph node (LN). Significantly increased frequencies of CD8 T cells in the B cell follicles and GCs were found in LNs from treated and untreated HIV-infected individuals...
January 18, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28100613/dynamic-modulation-of-expression-of-lentiviral-restriction-factors-in-primary-cd4-t-cells-following-siv-infection
#19
Andrew R Rahmberg, Premeela A Rajakumar, James M Billingsley, R Paul Johnson
: Although multiple restriction factors have been shown to inhibit HIV/SIV replication, little is known about their expression in vivo Expression of 45 confirmed and putative HIV/SIV restriction factors was analyzed in CD4+ T cells from peripheral blood and jejunum in rhesus macaques, revealing distinct expression patterns in naïve and memory subsets. In both peripheral blood and jejunum, memory CD4+ T cells expressed higher levels of multiple restriction factors compared with naïve cells...
January 18, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28100459/clinical-and-pathological-characteristics-of-hiv-and-hhv8-negative-castleman-disease
#20
Li Yu, Meifeng Tu, Jorge Cortes, Zijun Y Xu-Monette, Roberto N Miranda, Jun Zhang, Robert Z Orlowski, Sattva Neelapu, Prajwal C Boddu, Mary A Akosile, Thomas S Uldrick, Robert Yarchoan, L Jeffrey Medeiros, Yong Li, David C Fajgenbaum, Ken H Young
Castleman disease (CD) comprises three poorly-understood lymphoproliferative variants that share several common histopathological features. Unicentric CD (UCD) is localized to a single region of lymph nodes. Multicentric CD (MCD) manifests with systemic inflammatory symptoms and organ dysfunction due to cytokine dysregulation, and involves multiple lymph node regions. Human herpes virus-8 causes MCD (HHV-8-associated MCD) in immunocompromised individuals, such as HIV infected patients. However, greater than 50% MCD cases are HIV and HHV-8 negative, defined as idiopathic (iMCD)...
January 18, 2017: Blood
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