keyword
MENU ▼
Read by QxMD icon Read
search

Cd39

keyword
https://www.readbyqxmd.com/read/29349658/the-il-10-producing-regulatory-b-cells-b10-cells-and-regulatory-t-cell-subsets-in-neuromyelitis-optica-spectrum-disorder
#1
Eun Bin Cho, Hye-Jin Cho, Jin Myoung Seok, Ju-Hong Min, Eun-Suk Kang, Byoung Joon Kim
B cells contribute to the pathogenesis of neuromyelitis optica (NMO) by producing Aquaporin 4-specific autoantibodies (AQP4-ab); on the other hand, there are certain B cells that suppress immune responses by producing regulatory cytokines, such as IL-10. In this study, we investigated the presence of IL-10-producing Breg cells among lymphocyte subsets. Twenty-two seropositive NMO spectrum disorder (NMOSD) patients (29 samples) and 13 healthy controls (HCs) (14 samples) were enrolled. All NMOSD patients have received one or more immunosuppressive drugs...
January 19, 2018: Neurological Sciences
https://www.readbyqxmd.com/read/29336194/a-robust-multiplex-mass-spectrometric-assay-for-screening-small-molecule-inhibitors-of-cd73-with-diverse-inhibition-modalities
#2
Jessica McManus, Timothy He, Julie-Ann Gavigan, Ghislaine Marchand, Stephanie Vougier, Olivier Bedel, Paul Ferrari, Rosalia Arrebola, Timothy Gillespy, Richard C Gregory, Stuart Licht, Hong Cheng, Bailin Zhang, Gejing Deng
CD73/Ecto-5'-nucleotidase is a membrane-tethered ecto-enzyme that works in tandem with CD39 to convert extracellular adenosine triphosphate (ATP) into adenosine. CD73 is highly expressed on various types of cancer cells and on infiltrating suppressive immune cells, leading to an elevated concentration of adenosine in the tumor microenvironment, which elicits a strong immunosuppressive effect. In preclinical studies, targeting CD73 with anti-CD73 antibody results in favorable antitumor effects. Despite initial studies using antibodies, inhibition of CD73 catalytic activity using small-molecule inhibitors may be more effective in lowering extracellular adenosine due to better tumor penetration and distribution...
January 1, 2018: SLAS Discovery
https://www.readbyqxmd.com/read/29332180/cd39-adenosinergic-axis-in-renal-pathophysiology-and-therapeutics
#3
REVIEW
Bellamkonda K Kishore, Simon C Robson, Karen M Dwyer
Extracellular ATP interacts with purinergic type 2 (P2) receptors and elicits many crucial biological functions. Extracellular ATP is sequentially hydrolyzed to ADP and AMP by the actions of defined nucleotidases, such as CD39, and AMP is converted to adenosine, largely by CD73, an ecto-5'-nucleotidase. Extracellular adenosine interacts with P1 receptors and often opposes the effects of P2 receptor activation. The balance between extracellular ATP and adenosine in the blood and extracellular fluid is regulated chiefly by the activities of CD39 and CD73, which constitute the CD39-adenosinergic axis...
January 13, 2018: Purinergic Signalling
https://www.readbyqxmd.com/read/29315226/unfolding-role-of-a-danger-molecule-adenosine-signaling-in-modulation-of-microbial-infection-and-host-cell-response
#4
REVIEW
Jaden S Lee, Özlem Yilmaz
Ectonucleotidases CD39 and CD73, specific nucleotide metabolizing enzymes located on the surface of the host, can convert a pro-inflammatory environment driven by a danger molecule extracellular-ATP to an adenosine-mediated anti-inflammatory milieu. Accordingly, CD39/CD73 signaling have has strongly implicated in modulating the intensity, duration, and composition of purinergic danger signals delivered to host. Recent studies have eluted potential roles for CD39 and CD73 in selective triggering of a variety of host immune cells and molecules in the presence of pathogenic microorganisms or microbial virulence molecules...
January 9, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29308313/potential-effect-of-tumor-specific-treg-targeted-antibodies-in-the-treatment-of-human-cancers-a-bioinformatics-analysis
#5
Luigi Cari, Giuseppe Nocentini, Graziella Migliorati, Carlo Riccardi
One of the mechanisms of tumor rejection in immune-modulatory treatments is antibody-dependent cell-mediated cytotoxicity (ADCC) of regulatory T cells (Tregs) that infiltrate tumors in which cells expressing activating Fcγ receptors (FcγRs) are present. Our objective was to identify, through a bioinformatics analysis, Treg marker(s) expressed at the highest levels in nine types of human cancers, in order to determine the best targets for ADCC-inducing antitumor antibodies. We analyzed the mRNA levels of 24 surface Treg markers evaluated by the Affymetrix Human Genome U133 Plus 2...
2018: Oncoimmunology
https://www.readbyqxmd.com/read/29306022/t-regulatory-cells-mediate-immunosuppresion-by-adenosine-in-peripheral-blood-sentinel-lymph-node-and-tils-from-melanoma-patients
#6
P Di Gennaro, G Gerlini, R Caporale, S Sestini, P Brandani, C Urso, N Pimpinelli, L Borgognoni
T regulatory cells (Tregs), involved in tumour tolerance, can generate Adenosine by CD39/CD73 surface enzymes, which identify four Tregs subsets: CD39+CD73- nTregs, CD39+CD73+ iTregs, CD39-CD73+ oTregs and CD39-CD73- xTregs. In melanoma patients, increased Tregs levels are detected in peripheral blood (PB), sentinel lymph node (SLN) and tumour infiltrating lymphocytes (TILs), but Adenosine role was not investigated yet. We examined total Tregs and Adenosine subsets in PB, SLN and TILs from melanoma patients (n = 32) and PB from healthy donors (HD; n = 10) by flow cytometry...
January 3, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29274390/extracellular-atp-signaling-and-clinical-relevance
#7
REVIEW
Lei Dou, Yi-Fa Chen, Peter J Cowan, Xiao-Ping Chen
Since purinergic signaling was discovered in the early 1970s, it has been shown that extracellular nucleotides, and their derivative nucleosides, are released in a regulated or unregulated manner by cells in various challenging settings and then bind defined purinergic receptors to activate intricate signaling networks. Extracellular ATP plays a role based on different P2 receptor subtypes expressed on specific cell types. Sequential hydrolysis of extracellular ATP catalyzed by ectonucleotidases (e.g. CD39, CD73) is the main pathway for the generation of adenosine, which in turn activates P1 receptors...
December 20, 2017: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/29236227/loss-of-vascular-expression-of-nucleoside-triphosphate-diphosphohydrolase-1-cd39-in-hypertension
#8
Charlotte Roy, Julie Tabiasco, Antoine Caillon, Yves Delneste, Jean Merot, Julie Favre, Anne Laure Guihot, Ludovic Martin, Daniele C Nascimento, Bernhard Ryffel, Simon C Robson, Jean Sévigny, Daniel Henrion, Gilles Kauffenstein
Ectonucleoside triphosphate diphosphohydrolase-1, the major vascular/immune ectonucleotidase, exerts anti-thrombotic and immunomodulatory actions by hydrolyzing extracellular nucleotides (danger signals). Hypertension is characterized by vascular wall remodeling, endothelial dysfunction, and immune infiltration. Here our aim was to investigate the impact of arterial hypertension on CD39 expression and activity in mice. Arterial expression of CD39 was determined by reverse transcription quantitative real-time PCR in experimental models of hypertension, including angiotensin II (AngII)-treated mice (1 mg/kg/day, 21 days), deoxycorticosterone acetate-salt mice (1% salt and uninephrectomy, 21 days), and spontaneously hypertensive rats...
December 13, 2017: Purinergic Signalling
https://www.readbyqxmd.com/read/29209319/mesenchymal-stem-cells-induce-expression-of-cd73-in-human-monocytes-in-vitro-and-in-a-swine-model-of-myocardial-infarction-in-vivo
#9
Marta Monguió-Tortajada, Santiago Roura, Carolina Gálvez-Montón, Marcella Franquesa, Antoni Bayes-Genis, Francesc E Borràs
The ectoenzymes CD39 and CD73 regulate the purinergic signaling through the hydrolysis of adenosine triphosphate (ATP)/ADP to AMP and to adenosine (Ado), respectively. This shifts the pro-inflammatory milieu induced by extracellular ATP to the anti-inflammatory regulation by Ado. Mesenchymal stem cells (MSCs) have potent immunomodulatory capabilities, including monocyte modulation toward an anti-inflammatory phenotype aiding tissue repair. In vitro, we observed that human cardiac adipose tissue-derived MSCs (cATMSCs) and umbilical cord MSCs similarly polarize monocytes toward a regulatory M2 phenotype, which maintained the expression of CD39 and induced expression of CD73 in a cell contact dependent fashion, correlating with increased functional activity...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29188602/-rare-thalassemia-mutations-among-southern-chinese-population
#10
Fen Lin, Liye Yang, Min Lin, Xiangbian Zheng, Min Lu, Meilan Qiu, Liejun Li, Longxu Xie
OBJECTIVE: To detect rare types of thalassemia mutations among southern Chinese population. METHODS: Peripheral blood samples from 327 patients from various regions of southern China were collected. The patients were suspected as rare-type thalassemia for their inconsistency between hematological phenotypes and results of routine mutation screening. The samples were further analyzed with GAP-PCR and DNA sequencing. RESULTS: One hundred and eight cases were diagnosed as rare types of thalassemia...
December 10, 2017: Zhonghua Yi Xue Yi Chuan Xue za Zhi, Zhonghua Yixue Yichuanxue Zazhi, Chinese Journal of Medical Genetics
https://www.readbyqxmd.com/read/29184552/multifaceted-effects-of-extracellular-adenosine-triphosphate-and-adenosine-in-the-tumor-host-interaction-and-therapeutic-perspectives
#11
REVIEW
Paola de Andrade Mello, Robson Coutinho-Silva, Luiz Eduardo Baggio Savio
Cancer is still one of the world's most pressing health-care challenges, leading to a high number of deaths worldwide. Immunotherapy is a new developing therapy that boosts patient's immune system to fight cancer by modifying tumor-immune cells interaction in the tumor microenvironment (TME). Extracellular adenosine triphosphate (eATP) and adenosine (Ado) are signaling molecules released in the TME that act as modulators of both immune and tumor cell responses. Extracellular adenosine triphosphate and Ado activate purinergic type 2 (P2) and type 1 (P1) receptors, respectively, triggering the so-called purinergic signaling...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29172836/ectonucleotidase-cd39-expression-in-regional-metastases-in-head-and-neck-cancer
#12
Magis Mandapathil, Mehtap Boduc, Marion Roessler, Christian Güldner, Ute Walliczek-Dworschak, Robert Mandic
INTRODUCTION: CD39 is the rate-limiting enzyme in the generation of immunosuppressive adenosine and its expression and activity are significant in tumor progression. Squamous cell carcinoma of the head and neck (HNSCC) shows an overall poor prognosis due to high local recurrence rates and early metastatic spread. MATERIAL AND METHODS: Primary tumor specimens and lymph node specimens harvested during neck dissection of 65 patients with a diagnosis of HNSCC were subjected to immunohistochemical and H-score analysis of CD39 expression...
November 26, 2017: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/29163045/down-regulation-of-ntpdase2-and-adp-sensitive-p2-purinoceptors-correlate-with-severity-of-symptoms-during-experimental-autoimmune-encephalomyelitis
#13
Marija Jakovljevic, Irena Lavrnja, Iva Bozic, Danijela Savic, Ivana Bjelobaba, Sanja Pekovic, Jean Sévigny, Nadezda Nedeljkovic, Danijela Laketa
The present study explores tissue and cellular distribution of ectonucleoside triphosphate diphosphohydrolase 2 (NTPDase2) and the gene and protein expression in rat spinal cord during the course of experimental autoimmune encephalomyelitis (EAE). Given that NTPDase2 hydrolyzes ATP with a transient accumulation of ADP, the expression of ADP-sensitive P2 purinoceptors was analyzed as well. The autoimmune disease was actively induced in Dark Agouti female rats and the changes were analyzed 10, 15 and 29 days after the induction...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/29134411/distinct-roles-of-ecto-nucleoside-triphosphate-diphosphohydrolase-2-ntpdase2-in-liver-regeneration-and-fibrosis
#14
Linda Feldbrügge, Z Gordon Jiang, Eva Csizmadia, Shuji Mitsuhashi, Stephanie Tran, Eric U Yee, Sonja Rothweiler, Kahini A Vaid, Jean Sévigny, Moritz Schmelzle, Yury V Popov, Simon C Robson
Ecto-nucleoside triphosphate diphosphohydrolases (E-NTPDases) are cell surface-located transmembrane ecto-enzymes of the CD39 superfamily which regulate inflammation and tissue repair by catalyzing the phosphohydrolysis of extracellular nucleotides and modulating purinergic signaling. In the liver, NTPDase2 is reportedly expressed on portal fibroblasts, but its functional role in regulating tissue regeneration and fibrosis is incompletely understood. Here, we studied the role of NTPDase2 in several models of liver injury using global knockout mice...
November 13, 2017: Purinergic Signalling
https://www.readbyqxmd.com/read/29127315/human-gingiva-derived-mesenchymal-stem-cells-ameliorate-streptozoticin-induced-t1dm-in-mice-via-suppression-of-t-effector-cells-and-up-regulating-treg-subsets
#15
Wei Zhang, Li Zhou, Junlong Dang, Ximei Zhang, Julie Wang, Yanming Chen, Jichao Liang, Dongqing Li, Jilin Ma, Jia Yuan, Weiwen Chen, Homayoun H Zadeh, Nancy Olsen, Song Guo Zheng
There is yet no cure for type 1 diabetes (T1DM) so far. A significant body of evidence has demonstrated that bone marrow-derived mesenchymal stem cells (BMSCs) showed great potential in controlling T1DM. But there exists much difficulty in using BMSCs as a clinical therapy. We here test whether a new population of mesenchymal stem cells from human gingiva (GMSCs), which has many advantages over BMSCs, can delay or prevent progress of T1DM. GMSCs were adoptively transferred to multiple low-dose streptozotocin (STZ)-induced T1DM...
November 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29126851/ccr6-signaling-inhibits-suppressor-function-of-induced-treg-during-gut-inflammation
#16
Neeraja Kulkarni, Heikrujam Thoihen Meitei, Sandip Ashok Sonar, Praveen Kumar Sharma, Vikkarasan Rehman Mujeeb, Sharad Srivastava, Ramanamurthy Boppana, Girdhari Lal
CCR6 is a G protein-coupled receptor (GPCR) that binds to a specific chemokine, CCL20. The role of CCR6-CCL20 is very well studied in the migration of immune cells, but the non-chemotaxis functions of CCR6 signaling were not known. Here, we show that during gut inflammation, the frequency of Foxp3(+)CD4(+) T cells (Tregs) reduced in the secondary lymphoid tissues and CCR6(+) Tregs enhanced the expression of RORγt. The peripheral blood mononuclear cells (PBMCs) of ulcerative colitis (UC) patients showed lower percentages of Foxp3(+)CD4(+) T cells, as compared to healthy individuals, with CCR6(+) Tregs showing higher RORγt expression as compared to CCR6(-)Tregs...
November 7, 2017: Journal of Autoimmunity
https://www.readbyqxmd.com/read/29108754/extracellular-adenosine-produced-by-ecto-5-nucleotidase-cd73-regulates-macrophage-pro-inflammatory-responses-nitric-oxide-production-and-favors-salmonella-persistence
#17
Matthew G Costales, Mohammad Samiul Alam, Christopher Cavanaugh, Kristina M Williams
Surface enzymes CD39 (nucleoside triphosphate dephosphorylase) and CD73 (ecto-5'-nucleotidase) mediate the synthesis of extracellular adenosine that can regulate immune responses. Adenosine produced by CD39/CD73 acts via adenosine receptors (ARs). CD73 is expressed by a variety of cell types and mediates anti-inflammatory responses. Because efficient innate immune responses are required for clearance of Salmonella infection, we investigated the role of CD73 in macrophage function, including phagocytosis, intracellular killing of Salmonella, and anti-bacterial pro-inflammatory responses to Salmonella-whole cell lysate (ST-WCL) or Salmonella infection...
November 11, 2017: Nitric Oxide: Biology and Chemistry
https://www.readbyqxmd.com/read/29103803/cd39-and-cd73-activity-are-protective-in-a-mouse-model-of-antiphospholipid-antibody-induced-miscarriages
#18
Anushka N Samudra, Karen M Dwyer, Carly Selan, Susanna Freddi, Lisa Murray-Segal, Mandana Nikpour, Michael J Hickey, Karlheinz Peter, Simon C Robson, Maithili Sashindranath, Peter J Cowan, Harshal H Nandurkar
OBJECTIVE: Antiphospholipid syndrome (APS) is a systemic autoimmune disorder of young adults associated with devastating pregnancy complications (recurrent miscarriages, preeclampsia and low birth weight) and vascular complications including thrombosis. The key components implicated in pathogenesis of APS are the complement cascade and tissue factor (TF) activity causing inflammation and coagulation. Purinergic signalling involving catabolism of ATP to adenosine by cell-surface enzymes CD39 and CD73 has anti-inflammatory and anti-thrombotic effects...
November 2, 2017: Journal of Autoimmunity
https://www.readbyqxmd.com/read/29103633/cd8-cd28-cd127locd39-regulatory-t-cell-expansion-a%C3%A2-new-possible-pathogenic-mechanism-for-hiv-infection
#19
Daniela Fenoglio, Chiara Dentone, Alessio Signori, Antonio Di Biagio, Alessia Parodi, Francesca Kalli, Giorgia Nasi, Monica Curto, Giovanni Cenderello, Pasqualina De Leo, Valentina Bartolacci, Giancarlo Orofino, Laura Ambra Nicolini, Lucia Taramasso, Edoardo Fiorillo, Valeria Orrù, Paolo Traverso, Bianca Bruzzone, Federico Ivaldi, Eugenio Mantia, Michele Guerra, Simone Negrini, Mauro Giacomini, Sanjay Bhagani, Gilberto Filaci
BACKGROUND: HIV-associated immunodeficiency is related to loss of CD4+ T cells. This mechanism does not explain certain manifestations of HIV disease, such as immunodeficiency events in patients with greater than 500 CD4+ T cells/μL. CD8+CD28-CD127loCD39+ T cells are regulatory T (Treg) lymphocytes that are highly concentrated within the tumor microenvironment and never analyzed in the circulation of HIV-infected patients. OBJECTIVES: We sought to analyze the frequency of CD8+CD28-CD127loCD39+ Treg cells in the circulation of HIV-infected patients...
October 28, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29090621/post-thyroidectomy-hypothyroidism-increases-the-expression-and-activity-of-ectonucleotidases-in-platelets-possible-involvement-of-reactive-oxygen-species
#20
Jucimara Baldissarelli, Micheli M Pillat, Roberta Schmatz, Andréia M Cardoso, Fátima H Abdalla, Juliana S de Oliveira, Carla R N Polachini, Emerson Casali, Clarissa Pereira Bornemann, Henning Ulrich, Vera M Morsch, Maria R C Schetinger
Signaling mediated by purines is a widespread mechanism of cell-cell communication related to vasomotor responses and the control of platelet function in the vascular system. However, little is known about the involvement of this signaling as well as the role of reactive oxygen species (ROS) in the development of hypothyroidism. Therefore, the present study investigates changes in the purinergic system, including enzyme activities and expression in platelets, and oxidative profiles in patients with post-thyroidectomy hypothyroidism...
November 1, 2017: Platelets
keyword
keyword
26291
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"