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Gene expression in lymphocytes

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https://www.readbyqxmd.com/read/28821622/the-replication-and-transcription-activator-of-murine-gammaherpesvirus-68-cooperatively-enhances-cytokine-activated-stat3-mediated-gene-expression
#1
Hui-Chen Chang Foreman, Julie Armstrong, Alexis L Santana, Laurie T Krug, Nancy C Reich
Gammaherpesviruses (γΗVs) have a dynamic strategy for life-time persistence, involving productive infection, latency, and intermittent reactivation. In latency reservoirs, such as B lymphocytes, γΗV exists as a viral episome and expresses few viral genes. Although the ability of γHV to reactivate from latency and re-enter the lytic phase is challenging to investigate and control, it is known that the γΗV replication and transcription activator, RTA, can promote lytic reactivation. In this study, we provide first evidence that RTA of murine γΗV 68 (MHV68) selectively binds and enhances the activity of tyrosine-phosphorylated host STAT3...
August 15, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28818640/the-influence-of-physical-activity-in-the-anti-tumor-immune-response-in-experimental-breast-tumor
#2
Thiago M Bianco, Douglas R Abdalla, Chamberttan S Desidério, Sofie Thys, Cindy Simoens, John-Paul Bogers, Eddie F C Murta, Márcia A Michelin
This study aimed to investigate the influence of physical activity in innate immunity to conduce to an effective antitumoral immune response analyzing the phenotype and activation status of infiltrating cells. We analyzed the intracellular cytokines and the transcription factors of tumor infiltrating lymphocytes (TILS) and spleen leukocytes. The Nos2 gene expression was evaluated in spleen cells and futhermore the ROS production was measured and spleen cells; another cell evaluated was dendritic cells (TIDCs), their cytokines expression and membrane molecules; finally to understood the results obtained, we analysed the dendritic cells obtained from bone marrow...
August 14, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28818395/lymphocyte-fate-and-metabolism-a-clonal-balancing-act
#3
REVIEW
Simone A Nish, Wen-Hsuan W Lin, Steven L Reiner
Activated lymphocytes perform a clonal balancing act, yielding a daughter cell that differentiates owing to intense PI3K signaling, alongside a self-renewing sibling cell with blunted anabolic signaling. Divergent cellular anabolism versus catabolism is emerging as a feature of several developmental and regenerative paradigms. Metabolism can dictate cell fate, in part, because lineage-specific regulators are embedded in the circuitry of conserved metabolic switches. Unequal transmission of PI3K signaling during regenerative divisions is reminiscent of compartmentalized PI3K activity during directed motility or polarized information flow in non-dividing cells...
August 14, 2017: Trends in Cell Biology
https://www.readbyqxmd.com/read/28817603/expression-of-the-mhc-class-ii-in-triple-negative-breast-cancer-is-associated-with-tumor-infiltrating-lymphocytes-and-interferon-signaling
#4
In Ah Park, Seong-Hye Hwang, In Hye Song, Sun-Hee Heo, Young-Ae Kim, Won Seon Bang, Hye Seon Park, Miseon Lee, Gyungyub Gong, Hee Jin Lee
Tumor-infiltrating lymphocytes (TILs) have been known for their strong prognostic and predictive significance in triple-negative breast cancer (TNBC). Several mechanisms for TIL influx in TNBC have been elucidated. Major histocompatibility complex class II (MHC-II) is an essential component of the adaptive immune system and is generally restricted to the surface of antigen-presenting cells. However, it has been reported that interferon-gamma signaling may induce MHC-II in almost all cell types, including those derived from cancer...
2017: PloS One
https://www.readbyqxmd.com/read/28815969/-318c-t-polymorphism-of-the-ctla-4-gene-is-an-independent-risk-factor-for-rbc-alloimmunization-among-sickle-cell-disease-patients
#5
V B Oliveira, M R Dezan, F C A Gomes, S F Menosi Gualandro, J E Krieger, A C Pereira, J D Marsiglia, J E Levi, V Rocha, A Mendrone-Junior, E C Sabino, C L Dinardo
Cytotoxic T-lymphocyte-associated antigen 4 (CTLA-4) molecule is expressed on T-lymphocyte membrane and negatively influences the antigen-presenting process. Reduced expression of CTLA-4 due to gene polymorphisms is associated with increased risk of autoimmune disorders, whose physiopathology is similar to that of post-transfusion red blood cell (RBC) alloimmunization. Our goal was to evaluate if polymorphisms of CTLA-4 gene that affect protein expression are associated with RBC alloimmunization. This was a case-control study in which 134 sickle cell disease (SCD) patients and 253 non-SCD patients were included...
August 17, 2017: International Journal of Immunogenetics
https://www.readbyqxmd.com/read/28814669/neonatal-and-adult-recent-thymic-emigrants-produce-il-8-and-express-complement-receptors-cr1-and-cr2
#6
Marcin L Pekalski, Arcadio Rubio García, Ricardo C Ferreira, Daniel B Rainbow, Deborah J Smyth, Meghavi Mashar, Jane Brady, Natalia Savinykh, Xaquin Castro Dopico, Sumiyya Mahmood, Simon Duley, Helen E Stevens, Neil M Walker, Antony J Cutler, Frank Waldron-Lynch, David B Dunger, Claire Shannon-Lowe, Alasdair J Coles, Joanne L Jones, Chris Wallace, John A Todd, Linda S Wicker
The maintenance of peripheral naive T lymphocytes in humans is dependent on their homeostatic division, not continuing emigration from the thymus, which undergoes involution with age. However, postthymic maintenance of naive T cells is still poorly understood. Previously we reported that recent thymic emigrants (RTEs) are contained in CD31+CD25- naive T cells as defined by their levels of signal joint T cell receptor rearrangement excision circles (sjTRECs). Here, by differential gene expression analysis followed by protein expression and functional studies, we define that the naive T cells having divided the least since thymic emigration express complement receptors (CR1 and CR2) known to bind complement C3b- and C3d-decorated microbial products and, following activation, produce IL-8 (CXCL8), a major chemoattractant for neutrophils in bacterial defense...
August 17, 2017: JCI Insight
https://www.readbyqxmd.com/read/28812922/a-circulating-micro-rna-signature-serves-as-a-diagnostic-and-prognostic-indicator-in-sarcoidosis
#7
Christian Ascoli, Yue Huang, Cody Schott, Benjamin A Turturice, Ahmed Metwally, David L Perkins, Patricia W Finn
Micro-RNAs (miRNAs) act as post-transcriptional regulators of gene expression. In sarcoidosis, aberrant miRNA expression may enhance immune responses mounted against an unknown antigenic agent. We tested whether a distinct miRNA signature functions as a diagnostic biomarker and explored its role as an immune modulator in sarcoidosis. Expression of miRNAs from peripheral blood mononuclear cells from subjects that met clinical and histopathologic criteria for sarcoidosis were compared to those from matched controls in the ACCESS study...
August 16, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28812292/effect-of-low-selenium-high-fat-diet-on-pig-peripheral-blood-lymphocytes-perspectives-from-selenoproteins-heat-shock-proteins-and-cytokines
#8
Tianqi Liu, Tianshu Yang, Tingru Pan, Ci Liu, Shu Li
The aim of the present study was to clarify the effect of low selenium (Se)/high fat on the mRNA expression of selenoproteins, heat shock proteins (HSPs) and cytokines in pig peripheral blood lymphocytes. Forty crossbred boar piglets with healthy lean body weights of 10 kg were randomly divided into four treatment groups (group C, group L-Se, group H-fat, and group L-Se-H-fat) (n = 10/group) and fed with the corresponding diet for 16 weeks. The pig peripheral blood lymphocytes were extracted, and the mRNA expression of selenoproteins, HSPs, and cytokines was measured...
August 15, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28811575/biological-and-functional-characterization-of-bone-marrow-derived-mesenchymal-stromal-cells-from-patients-affected-by-primary-immunodeficiency
#9
Nadia Starc, Daniela Ingo, Antonella Conforti, Valeria Rossella, Luigi Tomao, Angela Pitisci, Fabiola De Mattia, Immacolata Brigida, Mattia Algeri, Mauro Montanari, Giuseppe Palumbo, Pietro Merli, Paolo Rossi, Alessandro Aiuti, Franco Locatelli, Maria Ester Bernardo
Mesenchymal stromal cells (MSCs) represent a key component of bone marrow (BM) microenvironment and display immune-regulatory properties. We performed a detailed analysis of biological/functional properties of BM-MSCs derived from 33 pediatric patients affected by primary immune-deficiencies (PID-MSCs): 7 Chronic Granulomatous Disease (CGD), 15 Wiskott-Aldrich Syndrome (WAS), 11 Severe Combined Immunodeficiency (SCID). Results were compared with MSCs from 15 age-matched pediatric healthy-donors (HD-MSCs). Clonogenic and proliferative capacity, differentiation ability, immunophenotype, immunomodulatory properties were analyzed...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28810543/atorvastatin-has-a-protective-effect-in-a-mouse-model-of-bronchial-asthma-through-regulating-tissue-transglutaminase-and-triggering-receptor-expressed-on-myeloid-cells-1-expression
#10
Ming-Wei Liu, Rong Liu, Hai-Ying Wu, Mei Chen, Min-Na Dong, Yun-Qiao Huang, Chun-Hai Zhang, Yin-Zhong Wang, Jing Xia, Yang Shi, Feng-Mei Xie, Hua Luo, Xin-Yuan Zhao, Wei Wei, Mei-Xian Su
Airway remodeling in asthma contributes to airway hyperreactivity, loss of lung function and persistent symptoms. Current therapies do not adequately treat the structural airway changes associated with asthma. Statin drugs have improved respiratory health and their therapeutic potential in asthma has been tested in clinical trials. However, the mechanism of action of statins in this context has remained elusive. The present study hypothesized that atorvastatin treatment of ovalbumin-exposed mice attenuates early features of airway remodeling via a mevalonate-dependent mechanism...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28810332/-study-on-the-expression-of-trip13-mrna-in-chronic-lymphocytic-leukemia-b-lymphocyte-and-the-molecular-mechanism-of-trip13-mediated-jvm-2-cell-proliferation-and-apoptosis
#11
K S Zhou, Q Zhang, W T Zhang, Y Y Liu, S S Wu, J Zhou, X D Wei, Y P Song
Objective: To investigate the clinical significance of expression level of thyroid hormone receptor interactors 13 (TRIP13) gene to probe its function and downstream molecular mechanism in chronic lymphocytic leukemia (CLL) . Methods: Real-time quantitative PCR method was used to detect the expression levels of TRIP13 mRNA of CD19(+) B lymphocytes in 30 cases of patients with CLL and 12 cases of peripheral blood hematopoietic stem cell donors (normal control group) . Lentivirus mediated shRNA was used to interference the mRNA and TRIP13 protein in CLL cells JVM-2...
July 14, 2017: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/28810314/-clinical-and-pathological-characteristics-of-erdheim-chester-disease-involving-the-lungs
#12
T Lu, S Wang, H Huang, T Wang, M Wang, D R Zhong, R E Feng
Objective: To explore the clinical manifestations, pathological features, differential diagnosis and gene mutation status in patients with pulmonary involvement of Erdheim-Chester disease (ECD). Methods: The clinical data of 4 cases of Erdheim-Chester disease admitted to Peking Union Medical College Hospital from October 2014 to August 2016 were examined for imaging, microscopic and immunohistochemitry findings, and BRAFV600E mutation. The related literatures were reviewed. Results: Among the 4 cases, there were 3 males and 1 female, aging from 7 to 47 years, and the average age was 34...
August 12, 2017: Chinese Journal of Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/28805662/clinical-and-immunological-responses-after-cd30-specific-chimeric-antigen-receptor-redirected-lymphocytes
#13
Carlos A Ramos, Brandon Ballard, Huimin Zhang, Olga Dakhova, Adrian P Gee, Zhuyong Mei, Mrinalini Bilgi, Meng-Fen Wu, Hao Liu, Bambi Grilley, Catherine M Bollard, Bill H Chang, Cliona M Rooney, Malcolm K Brenner, Helen E Heslop, Gianpietro Dotti, Barbara Savoldo
BACKGROUND: Targeting CD30 with monoclonal antibodies in Hodgkin lymphoma (HL) and anaplastic large cell lymphoma (ALCL) has had profound clinical success. However, adverse events, mainly mediated by the toxin component of the conjugated antibodies, cause treatment discontinuation in many patients. Targeting CD30 with T cells expressing a CD30-specific chimeric antigen receptor (CAR) may reduce the side effects and augment antitumor activity. METHODS: We conducted a phase I dose escalation study in which 9 patients with relapsed/refractory HL or ALCL were infused with autologous T cells that were gene-modified with a retroviral vector to express the CD30-specific CAR (CD30...
August 14, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28805233/analytic-and-dynamic-secretory-profile-of-patient-derived-cytokine-induced-killer-cells
#14
Giulia Mesiano, Roberta Zini, Giulia Montagner, Nicoletta Bianchi, Rossella Manfredini, Antonella Chillemi, Massimo Aglietta, Giovanni Grignani, Ilaria Lampronti, Erika Fiorino, Fabio Malavasi, Dario Sangiolo, Roberto Gambari, Davide Ferrari
Adoptive immunotherapy with Cytokine Induced Killer (CIK) cells has shown antitumor activity against several kinds of cancers in preclinical models and clinical trials. CIK cells are a subset of ex vivo expanded T lymphocytes with T-NK phenotype and MHC-unrestricted antitumor activity. Literature provides scanty information on cytokines, chemokines and growth factors secreted by CIK cells. Therefore, we investigated the secretory profile of CIK cells generated from tumor patients. The secretome analysis was performed at specific time points (day 1, day 14 and day 21) of CIK cells expansion...
August 9, 2017: Molecular Medicine
https://www.readbyqxmd.com/read/28800255/overexpression-of-lymphocyte-activation-gene-3-inhibits-regulatory-t-cell-responses-in-osteoarthritis
#15
Junjie Xia, Zhiming Ni, Jian Wang, Shu Zhu, Hong Ye
Lymphocyte activation gene-3 (LAG-3) is a CD4 homologue expressed on the surface of activated conventional T cells and regulatory T (Treg) cells. In conventional T cells, LAG-3 acts as an inhibitory receptor of T cell inflammation. However, the role of LAG-3 in Treg cells remains controversial. In this study, we investigated the effect of LAG-3 on Tregs in osteoarthritis (OA). We observed that the proportion of LAG-3-expressing cells in CD4(+)CD25(+/high) T cells and Foxp3(+)CD4(+)CD25(+/high) T cells were significantly upregulated in OA patients...
August 11, 2017: DNA and Cell Biology
https://www.readbyqxmd.com/read/28794504/promoter-hypermethylation-of-bcl11b-gene-correlates-with-downregulation-of-gene-transcription-in-ankylosing-spondylitis-patients
#16
J Karami, M Mahmoudi, A Amirzargar, M Gharshasbi, A Jamshidi, S Aslani, M H Nicknam
Methylation of DNA is one of the important regulatory mechanisms of gene transcription. B-cell chronic lymphocytic leukemia/lymphoma 11B (BCL11B) plays a key role in the development, proliferation, differentiation, and survival of T cells. The aim of this study was to evaluate promoter methylation of BCL11B gene and its mRNA level in peripheral blood mononuclear cells (PBMCs) of ankylosing spondylitis (AS) patients in relation to healthy controls and evaluate their correlation with diseases clinical indices...
August 10, 2017: Genes and Immunity
https://www.readbyqxmd.com/read/28793237/fetal-sex-dependent-genomic-responses-in-the-circulating-lymphocytes-of-arsenic-exposed-pregnant-women-in-new-hampshire
#17
Paige A Bommarito, Elizabeth Martin, Lisa Smeester, Thomas Palys, Emily R Baker, Margaret R Karagas, Rebecca C Fry
Exposure to inorganic arsenic (iAs) during pregnancy is associated with adverse health outcomes present both at birth and later in life. A mechanism may include epigenetic and genomic alteration in fetal genes involved in immune functioning. To investigate the role of the maternal immune response to in utero iAs exposure, we conducted an analysis of immune-related genes in pregnant women from the New Hampshire Birth Cohort Study. A set of 31 genes were identified with altered expression in association with levels of urinary total arsenic, urinary iAs, urinary monomethylated arsenic and urinary dimethylated arsenic...
August 6, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28791291/atopic-dermatitis-studies-through-in-vitro-models
#18
REVIEW
Evelyne De Vuyst, Michel Salmon, Céline Evrard, Catherine Lambert de Rouvroit, Yves Poumay
Atopic dermatitis (AD) is a complex inflammatory skin condition that is not fully understood. Epidermal barrier defects and Th2 immune response dysregulations are thought to play crucial roles in the pathogenesis of the disease. A vicious circle takes place between these alterations, and it can further be complicated by additional genetic and environmental factors. Studies investigating in more depth the etiology of the disease are thus needed in order to develop functional treatments. In recent years, there have been significant advances regarding in vitro models reproducing important features of AD...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/28783703/lag3-limits-regulatory-t-cell-proliferation-and-function-in-autoimmune-diabetes
#19
Qianxia Zhang, Maria Chikina, Andrea L Szymczak-Workman, William Horne, Jay K Kolls, Kate M Vignali, Daniel Normolle, Maria Bettini, Creg J Workman, Dario A A Vignali
Inhibitory receptors (IRs) are pivotal in controlling T cell homeostasis because of their intrinsic regulation of conventional effector T (Tconv) cell proliferation, viability, and function. However, the role of IRs on regulatory T cells (Tregs) remains obscure because they could be required for suppressive activity and/or limit Treg function. We evaluated the role of lymphocyte activation gene 3 (LAG3; CD223) on Tregs by generating mice in which LAG3 is absent on the cell surface of Tregs in a murine model of type 1 diabetes...
March 31, 2017: Science Immunology
https://www.readbyqxmd.com/read/28783666/dynamics-of-influenza-induced-lung-resident-memory-t-cells-underlie-waning-heterosubtypic-immunity
#20
Bram Slütter, Natalija Van Braeckel-Budimir, Georges Abboud, Steven M Varga, Shahram Salek-Ardakani, John T Harty
Lung-resident memory CD8 T cells (TRM) induced by influenza A virus (IAV) that are pivotal for providing subtype-transcending protection against IAV infection (heterosubtypic immunity) are not maintained long term, causing gradual loss of protection. The short-lived nature of lung TRM contrasts sharply with long-term maintenance of TRM induced by localized infections in the skin and in other tissues. We show that the decline in lung TRM is determined by an imbalance between apoptosis and lung recruitment and conversion to TRM of circulating memory cells...
January 6, 2017: Science Immunology
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