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double negative T cell

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https://www.readbyqxmd.com/read/29448960/double-negative-cd27-igd-b-cells-are-expanded-in-nsclc-and-inversely-correlate-with-affinity-matured-b-cell-populations
#1
Sara M Centuori, Cecil J Gomes, Samuel S Kim, Charles W Putnam, Brandon T Larsen, Linda L Garland, David W Mount, Jesse D Martinez
BACKGROUND: The presence of B cells in early stage non-small cell lung cancer (NSCLC) is associated with longer survival, however, the role these cells play in the generation and maintenance of anti-tumor immunity is unclear. B cells differentiate into a variety of subsets with differing characteristics and functions. To date, there is limited information on the specific B cell subsets found within NSCLC. To better understand the composition of the B cell populations found in NSCLC we have begun characterizing B cells in lung tumors and have detected a population of B cells that are CD79A + CD27 - IgD - ...
February 15, 2018: Journal of Translational Medicine
https://www.readbyqxmd.com/read/29444269/association-of-angiotensin-ii-type-1-receptor-antibodies-with-graft-histology-function-and-survival-in-paediatric-renal-transplant-recipients
#2
Alexander Fichtner, Caner Süsal, Claudia Schröder, Britta Höcker, Susanne Rieger, Rüdiger Waldherr, Jens H Westhoff, Anja Sander, Duska Dragun, Burkhard Tönshoff
Background: We analysed in a carefully phenotyped cohort of paediatric patients the association of serum angiotensin II type 1 receptor antibodies (AT1R-Ab) with specific histological lesions and with graft function and survival in conjunction with overall and complement-binding donor-specific human leucocyte antigen donor-specific antibodies (HLA-DSA). Methods: Sera of 62 patients at the time of renal graft biopsy for clinical indication >1 year post-transplant were assessed for AT1R-Ab by enzyme-linked immunosorbent assay (ELISA) and for DSA and C1q-fixing DSA by single-antigen bead technology...
February 12, 2018: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/29434594/p38%C3%AE-and-p38%C3%AE-are-involved-in-t-lymphocyte-development
#3
Ana Risco, Miguel A Martin-Serrano, Domingo F Barber, Ana Cuenda
p38 mitogen-activated protein kinase (MAPK) signal transduction pathways are essential regulators of the immune response. Particularly, p38γ and p38δ regulate many immune cell functions such as cytokine production, migration, or T cell activation; however, their involvement in immune cell development is largely unknown. Here, we analysed the role of p38 MAPK isoforms p38γ and p38δ in T cell differentiation in the thymus and in lymph nodes, using mice deficient in p38γ, p38δ, or in both. We found that the T cell differentiation program in the thymus was affected at different stages in p38γ-, p38δ-, and p38γ/δ-deficient mice, and also peripheral T cell homaeostasis was compromised...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29433222/segregation-of-tetragenococcus-halophilus-and-zygosaccharomyces-rouxii-using-w1-o-w2-double-emulsion-for-use-in-mixed-culture-fermentation
#4
Putu Virgina Partha Devanthi, Hani El Kadri, Allen Bowden, Fotios Spyropoulos, Konstantinos Gkatzionis
Antagonism in mixed culture fermentation can result in undesirable metabolic activity and negatively affect the fermentation process. Water-oil-water (W1/O/W2) double emulsions (DE) could be utilized in fermentation for segregating multiple species and controlling their release and activity. Zygosaccharomyces rouxii and Tetragenococcus halophilus, two predominant microbial species in soy sauce fermentation, were incorporated in the internal W1 and external W2 phase of a W1/O/W2, respectively. The suitability of DE for controlling T...
March 2018: Food Research International
https://www.readbyqxmd.com/read/29431868/correction-of-t-cell-deficiency-in-zap-70-knockout-mice-by-simple-intraperitoneal-adoptive-transfer-of-thymocytes
#5
Réka Kugyelka, Zoltán Kohl, Katalin Olasz, Lilla Prenek, Tímea Berki, Péter Balogh, Ferenc Boldizsár
The tyrosine kinase ZAP-70 (zeta-chain associated protein of 70 kDa) plays a key role in T cell development and signaling. In the absence of ZAP-70, T cell development is arrested in the CD4+ CD8+ double positive stage, thus ZAP-70 homozygous knockout (ZAP-70-/- ) mice have no mature T cells in their peripheral lymphoid organs and blood, causing severe immunodeficiency. We investigated the early kinetics and long-term effects of wild-type thymocyte transfer on T cell repopulation in ZAP-70-/- mice. We used a single intraperitoneal (ip...
February 12, 2018: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29429572/mutations-in-the-baf-complex-subunit-dpf2-are-associated-with-coffin-siris-syndrome
#6
Georgia Vasileiou, Silvia Vergarajauregui, Sabine Endele, Bernt Popp, Christian Büttner, Arif B Ekici, Marion Gerard, Nuria C Bramswig, Beate Albrecht, Jill Clayton-Smith, Jenny Morton, Susan Tomkins, Karen Low, Astrid Weber, Maren Wenzel, Janine Altmüller, Yun Li, Bernd Wollnik, George Hoganson, Maria-Renée Plona, Megan T Cho, Christian T Thiel, Hermann-Josef Lüdecke, Tim M Strom, Eduardo Calpena, Andrew O M Wilkie, Dagmar Wieczorek, Felix B Engel, André Reis
Variants affecting the function of different subunits of the BAF chromatin-remodelling complex lead to various neurodevelopmental syndromes, including Coffin-Siris syndrome. Furthermore, variants in proteins containing PHD fingers, motifs recognizing specific histone tail modifications, have been associated with several neurological and developmental-delay disorders. Here, we report eight heterozygous de novo variants (one frameshift, two splice site, and five missense) in the gene encoding the BAF complex subunit double plant homeodomain finger 2 (DPF2)...
February 5, 2018: American Journal of Human Genetics
https://www.readbyqxmd.com/read/29428806/tcr%C3%AE-%C3%AE-cd3-cd4-cd8-double-negative-t-cells-in-autoimmunity
#7
REVIEW
D Brandt, C M Hedrich
TCRαβ+CD3+CD4-CD8-"double negative" (DN) T cells comprise a small subset of mature peripheral T cells. The origin and function of DN T cells are somewhat unclear and discussed controversially. While DN T cells resemble a rare and heterogeneous T cell subpopulation in healthy individuals, numbers of TCRαβ+DN T cells are expanded in several inflammatory conditions, where they also exhibit distinct effector phenotypes and infiltrate inflamed tissues. Thus, DN T cells may be involved in systemic inflammation and tissue damage in autoimmune/inflammatory conditions, including SLE, Sjögren's syndrome, and psoriasis...
February 8, 2018: Autoimmunity Reviews
https://www.readbyqxmd.com/read/29421624/comprehensive-overview-of-murine-epididymal-mononuclear-phagocytes-and-lymphocytes-unexpected-populations-arise
#8
Allison Voisin, Marjorie Whitfield, Christelle Damon-Soubeyrand, Chantal Goubely, Joëlle Henry-Berger, Fabrice Saez, Ayhan Kocer, Joël R Drevet, Rachel Guiton
Despite increasing evidence that epididymal immune disorders can lead to infertility, the cells and mechanisms underlying epididymal immunity remain poorly understood. In this study, we propose a rather exhaustive overview of innate and adaptive immune cells present in the murine caput and cauda epididymis. Using flow cytometry and a wide set of markers, we screened the broadest panel of immune cells ever, in this organ. For the first time, we unequivocally quantified the innate populations of monocytes, macrophages, and dendritic cells subtypes...
January 31, 2018: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/29400123/increased-adhesion-molecule-levels-in-systemic-lupus-erythematosus-relationships-with-severity-of-illness-autoimmunity-metabolic-syndrome-and-cortisol-levels
#9
L F da Rosa Franchi Santos, N P Stadtlober, L G Costa Dall'Aqua, B M Scavuzzi, P M Guimarães, T Flauzino, M A Batisti Lozovoy, T V Mayumi Iriyoda, E M Vissoci Reiche, I Dichi, M Maes, A Colado Simão
Background This study was performed to assess adhesion molecules in systemic lupus erythematosus (SLE). Methods This case-control study examined 126 SLE patients and 48 healthy individuals. Blood levels of six adhesion molecules, cortisol, nuclear autoantibody (ANA) and anti-double stranded DNA (anti-dsDNA) titers were measured, while disease activity was assessed using the SLE Disease Activity Index (SLEDAI) score. Results Platelet endothelial cell adhesion molecule 1 (PECAM-1), vascular cell adhesion molecule 1 (VCAM-1), E-selectin, P-selectin, and plasminogen activator inhibitor type-1 (PAI-1) were significantly higher in SLE patients than in controls...
January 1, 2018: Lupus
https://www.readbyqxmd.com/read/29399625/successful-desensitization-of-t-cell-flow-cytometry-crossmatch-positive-renal-transplant-recipients-using-plasmapheresis-and-super-high-dose-intravenous-immunoglobulin
#10
Yoichi Kakuta, Shigeru Satoh, Yoshihiko Watarai, Atsushi Aikawa, Kazunari Tanabe, Hiroshi Harada, Takashi Yagisawa, Hideki Ishida, Masayoshi Okumi, Shiro Takahara
Background: High-dose IVIG (2 g/kg) alone or low-dose IVIG (100 mg/kg) in conjunction with plasma exchange is typically administered as a renal transplantation desensitization therapy. Herein, we monitored changes in T cell and B cell flow cytometry crossmatch (FCXM) to assess the effects of short-term super high-dose IVIG (4 g/kg) administration with plasmapheresis before living-donor renal transplantation. Methods: Seventeen patients, each showing positive T cell FCXM (median ratio, ≥ 1...
January 2018: Transplantation Direct
https://www.readbyqxmd.com/read/29396668/targeting-ataxia-telangiectasia-mutated-and-rad3-related-kinase-atr-in-pten-deficient-breast-cancers-for-personalized-therapy
#11
Nouf Al-Subhi, Reem Ali, Tarek Abdel-Fatah, Paul M Moseley, Stephen Y T Chan, Andrew R Green, Ian O Ellis, Emad A Rakha, Srinivasan Madhusudan
PURPOSE: Phosphate and tensin homolog (PTEN), a negative regulator of PI3K signaling, is involved in DNA repair. ATR is a key sensor of DNA damage and replication stress. We evaluated whether ATR signaling has clinical significance and could be targeted by synthetic lethality in PTEN-deficient triple-negative breast cancer (TNBC). METHODS: PTEN, ATR and pCHK1Ser345 protein level was evaluated in 1650 human breast cancers. ATR blockade by VE-821 was investigated in PTEN-proficient- (MDA-MB-231) and PTEN-deficient (BT-549, MDA-MB-468) TNBC cell lines...
February 2, 2018: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/29395064/senataxin-mutation-reveals-how-r-loops-promote-transcription-by-blocking-dna-methylation-at-gene-promoters
#12
Christopher Grunseich, Isabel X Wang, Jason A Watts, Joshua T Burdick, Robert D Guber, Zhengwei Zhu, Alan Bruzel, Tyler Lanman, Kelian Chen, Alice B Schindler, Nancy Edwards, Abhik Ray-Chaudhury, Jianhua Yao, Tanya Lehky, Grzegorz Piszczek, Barbara Crain, Kenneth H Fischbeck, Vivian G Cheung
R-loops are three-stranded nucleic acid structures found abundantly and yet often viewed as by-products of transcription. Studying cells from patients with a motor neuron disease (amyotrophic lateral sclerosis 4 [ALS4]) caused by a mutation in senataxin, we uncovered how R-loops promote transcription. In ALS4 patients, the senataxin mutation depletes R-loops with a consequent effect on gene expression. With fewer R-loops in ALS4 cells, the expression of BAMBI, a negative regulator of transforming growth factor β (TGF-β), is reduced; that then leads to the activation of the TGF-β pathway...
February 1, 2018: Molecular Cell
https://www.readbyqxmd.com/read/29389901/the-janus-face-of-nkt-cell-function-in-autoimmunity-and-infectious-diseases
#13
REVIEW
Alessandra Torina, Giuliana Guggino, Marco Pio La Manna, Guido Sireci
Natural killer T cells (NKT) are a subset of T lymphocytes bridging innate and adaptive immunity. These cells recognize self and microbial glycolipids bound to non-polymorphic and highly conserved CD1d molecules. Three NKT cell subsets, type I, II, and NKT-like expressing different antigen receptors (TCR) were described and TCR activation promotes intracellular events leading to specific functional activities. NKT can exhibit different functions depending on the secretion of soluble molecules and the interaction with other cell types...
February 1, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29381560/omega-3-decreases-il-6-levels-in-hiv-and-human-herpesvirus-8-coinfected-patients-in-uganda
#14
Anna E Coghill, Jeannette M Schenk, Zeina Mahkoul, Jackson Orem, Warren Phipps, Corey Casper
OBJECTIVE: Kaposi sarcoma is a HIV-associated malignancy caused by human herpesvirus-8 (HHV-8) that occurs at highest incidence in sub-Saharan Africa. Kaposi sarcoma patients often present with inflammatory symptoms associated with higher mortality. DESIGN: We conducted a double-blind, randomized, placebo-controlled study in Uganda to test whether omega-3 supplementation could reduce inflammation in HIV and HHV-8 coinfected adults. Patients with acute illness, AIDS, or advanced Kaposi sarcoma were ineligible, as were pregnant women...
February 20, 2018: AIDS
https://www.readbyqxmd.com/read/29339496/thymic-stromal-lymphopoietin-drives-the-development-of-il-13-th2-cells
#15
Sotaro Ochiai, Ferdinand Jagot, Ryan L Kyle, Evelyn Hyde, Ruby F White, Melanie Prout, Alfonso J Schmidt, Hidehiro Yamane, Olivier Lamiable, Graham Le Gros, Franca Ronchese
T helper 2 (Th2) cells are pivotal in the development of allergy. Allergen exposure primes IL-4+ Th2 cells in lymph node, but production of effector cytokines including IL-5 and IL-13 is thought to require additional signals from antigen and the environment. Here we report that a substantial proportion of naive CD4+ T cells in spleen and lymph node express receptors for the epithelium-derived inflammatory cytokine thymic stromal lymphopoietin (TSLP). Culture of naive CD4+ T cells in anti-(a)CD3, aCD28, and TSLP-supplemented Th2 conditions enabled the development of a unique population of IL-13-single positive (IL-13-SP) CD4+ T cells; TSLP and Th2 conditions were both required for their development...
January 16, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29326336/arid5b-as-a-critical-downstream-target-of-the-tal1-complex-that-activates-the-oncogenic-transcriptional-program-and-promotes-t-cell-leukemogenesis
#16
Wei Zhong Leong, Shi Hao Tan, Phuong Cao Thi Ngoc, Stella Amanda, Alice Wei Yee Yam, Wei-Siang Liau, Zhiyuan Gong, Lee N Lawton, Daniel G Tenen, Takaomi Sanda
The oncogenic transcription factor TAL1/SCL induces an aberrant transcriptional program in T-cell acute lymphoblastic leukemia (T-ALL) cells. However, the critical factors that are directly activated by TAL1 and contribute to T-ALL pathogenesis are largely unknown. Here, we identified AT-rich interactive domain 5B (ARID5B) as a collaborating oncogenic factor involved in the transcriptional program in T-ALL. ARID5B expression is down-regulated at the double-negative 2-4 stages in normal thymocytes, while it is induced by the TAL1 complex in human T-ALL cells...
January 11, 2018: Genes & Development
https://www.readbyqxmd.com/read/29324237/dna-induction-of-mdm2-promotes-proliferation-of-human-renal-mesangial-cells-and-alters-peripheral-b-cells-subsets-in-pediatric-systemic-lupus-erythematosus
#17
Chen-Xing Zhang, Ji Chen, Li Cai, Jing Wu, Jia-Yuan Wang, Lan-Fang Cao, Wei Zhou, Tong-Xin Chen
The study is aimed to investigate the role of MDM2 in the pathogenesis of lupus nephritis (LN) in pediatric SLE (pSLE). We confirmed that MDM2 expression was increased in peripheral blood mononuclear cells (PBMCs) as well as renal specimen of SLE compared with that of controls by western blot and immunofluorescence staining. Percentage of apoptotic and necrotic CD4+T, CD8+T and B cells were detected by flow cytometry respectively and levels of plasma cell free DNA (cfDNA) were quantified in SLE and healthy controls (HC)...
January 8, 2018: Molecular Immunology
https://www.readbyqxmd.com/read/29323266/aif-loss-deregulates-hematopoiesis-and-reveals-different-adaptive-metabolic-responses-in-bone-marrow-cells-and-thymocytes
#18
Lauriane Cabon, Audrey Bertaux, Marie-Noëlle Brunelle-Navas, Ivan Nemazanyy, Laurianne Scourzic, Laure Delavallée, Laura Vela, Mathieu Baritaud, Sandrine Bouchet, Cécile Lopez, Vu Quang Van, Kevin Garbin, Danielle Chateau, Françoise Gilard, Marika Sarfati, Thomas Mercher, Olivier A Bernard, Santos A Susin
Mitochondrial metabolism is a tightly regulated process that plays a central role throughout the lifespan of hematopoietic cells. Herein, we analyze the consequences of the mitochondrial oxidative phosphorylation (OXPHOS)/metabolism disorder associated with the cell-specific hematopoietic ablation of apoptosis-inducing factor (AIF). AIF-null (AIF-/Y ) mice developed pancytopenia that was associated with hypocellular bone marrow (BM) and thymus atrophy. Although myeloid cells were relatively spared, the B-cell and erythroid lineages were altered with increased frequencies of precursor B cells, pro-erythroblasts I, and basophilic erythroblasts II...
January 11, 2018: Cell Death and Differentiation
https://www.readbyqxmd.com/read/29301945/modulation-of-glutathione-promotes-apoptosis-in-triple-negative-breast-cancer-cells
#19
Tara Miran, Andreas T J Vogg, Natascha Drude, Felix M Mottaghy, Agnieszka Morgenroth
Triple-negative breast cancer has an extremely high rate of relapse. This is particularly due to the existence and survival of cancer stem cells (CSCs) characterized by increased amounts of glutathione (GSH). In this study, we evaluated the potential of pharmacological GSH depletion to sensitize CSCs to ionizing radiotherapy with an I-125-labeled nucleoside analog, 5-iodo-4'-thio-2'-deoxyuridine (ITdU). CSCs were isolated using CD24-- and CD44+-specific microbeads. GSH and reactive oxygen species (ROS) were evaluated by fluorescence-activated cell sorting...
January 4, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29296965/infiltration-of-effector-regulatory-t-cells-predicts-poor-prognosis-of-diffuse-large-b-cell-lymphoma-not-otherwise-specified
#20
Shoko Nakayama, Taiji Yokote, Toshikazu Akioka, Nobuya Hiraoka, Uta Nishiwaki, Takuji Miyoshi, Kazuki Iwaki, Ayami Takayama, Yuki Masuda, Jun Hatooka, Mayumi Fujimoto, Yasuichiro Nishimura, Motomu Tsuji
Regulatory T cells (Tregs) specifically express the transcription factor forkhead box P3 (FOXP3) and contribute to tumor progression. FOXP3-positive cells have been recently proven to be heterogeneous in phenotype and function, including effector Tregs (eTregs), naïve Tregs, and non-Tregs, which harbor no suppressive function. Therefore, it is crucial to investigate the "true Treg (eTreg)" population, rather than the entire FOXP3 population, with regards to their effect on tumor immunity. In particular, in diffuse large B-cell lymphoma, not otherwise specified (DLBCL, NOS), FOXP3-positive cells correlated with a better prognosis...
March 14, 2017: Blood Advances
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