keyword
MENU ▼
Read by QxMD icon Read
search

immunoreceptor

keyword
https://www.readbyqxmd.com/read/28296036/targeting-of-c-type-lectin-like-receptor-2-or-p2y12-for-the-prevention-of-platelet-activation-by-immunotherapeutic-cpg-oligodeoxynucleotides
#1
C Delierneux, N Donis, L Servais, O Wéra, C Lecut, M Vandereyken, L Musumeci, S Rahmouni, J Schneider, J A Eble, P Lancellotti, C Oury
BACKGROUND: Synthetic phosphorothioate-modified CpG oligodeoxynucleotides (CpG ODNs) display potent immunostimulatory properties that are widely exploited in clinical trials of anticancer treatment. Unexpectedly, a recent study indicates that CpG ODNs activate human platelets via the immunoreceptor tyrosine-based activation motif (ITAM)-coupled receptor glycoprotein VI. OBJECTIVE: To further analyze the mechanisms of CpG ODN-induced platelet activation and identify potential inhibitory strategies...
March 11, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28282368/elevated-expression-of-immunoreceptor-tyrosine-based-inhibitory-motif-tigit-on-t-lymphocytes-is-correlated-with-disease-activity-in-rheumatoid-arthritis
#2
Qing Luo, Zhen Deng, Chuxin Xu, Lulu Zeng, Jianqing Ye, Xue Li, Yang Guo, Zikun Huang, Junming Li
BACKGROUND It is well known that lymphocytes play an important role in rheumatoid arthritis (RA). T cell immunoreceptors with immunoglobulin (Ig) and immunoreceptor tyrosine-based inhibitory motif (TIGIT) have immunosuppressive co-stimulatory molecules that mediate inhibitory effects, but their roles in RA are poorly understood. MATERIAL AND METHODS Were recruited 76 patients with RA and 33 healthy controls (HC). Clinical manifestations, laboratory measurements, physical examination, and medical history of RA patients were recorded...
March 10, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28273363/siglec-9-is-upregulated-in-rheumatoid-arthritis-and-suppresses-collagen-induced-arthritis-through-reciprocal-regulation-of-th17-treg-cell-differentiation
#3
Xiaoyuan Wang, Dan Liu, Yaxian Ning, Jiayu Liu, Xin Wang, Ran Tu, Haili Shen, Qun Chen, Yongmin Xiong
Sialic acid-binding Ig-like lectin-9 (Siglec-9) is a novel sialic acid-binding member of the immunoglobulin superfamily, and is broadly expressed on immune cells, which can inhibit both innate and adaptive immune responses through immunoreceptor tyrosine-based inhibitory motifs. However, the exact role of Siglec-9 in the pathogenesis of rheumatoid arthritis (RA) remains unknown. In this study, we determined soluble Siglec-9 (sSiglec-9) levels in the serum and synovial fluid of RA patients, and evaluated the relation between sSiglec-9 levels and clinical factors...
March 8, 2017: Scandinavian Journal of Immunology
https://www.readbyqxmd.com/read/28261278/elevated-expression-of-tigit-on-cd3-cd4-t-cells-correlates-with-disease-activity-in-systemic-lupus-erythematosus
#4
Qing Luo, Jianqing Ye, Lulu Zeng, Xue Li, Le Fang, Beihua Ju, Zikun Huang, Junming Li
OBJECTIVES: It is well-known that lymphocytes play an important role in systemic lupus erythematosus (SLE). T cell immunoreceptor with Ig and immunoreceptor tyrosine-based inhibitory domains (TIGIT) is one of immunosuppressive costimulatory molecules that mediates an inhibitory effect. However, its roles in SLE are poorly understood. This study was designed to investigate the correlation between the frequencies of TIGIT-expressing CD3(+)CD4(+) T lymphocytes and SLE. METHODS: Patients with SLE were recruited from the First Affiliated Hospital of Nanchang University...
2017: Allergy, Asthma, and Clinical Immunology
https://www.readbyqxmd.com/read/28258703/the-cd47-sirp%C3%AE-signaling-axis-as-an-innate-immune-checkpoint-in-cancer
#5
REVIEW
Hanke L Matlung, Katka Szilagyi, Neil A Barclay, Timo K van den Berg
Immune checkpoint inhibitors, including those targeting CTLA-4/B7 and the PD-1/PD-L1 inhibitory pathways, are now available for clinical use in cancer patients, with other interesting checkpoint inhibitors being currently in development. Most of these have the purpose to promote adaptive T cell-mediated immunity against cancer. Here, we review another checkpoint acting to potentiate the activity of innate immune cells towards cancer. This innate immune checkpoint is composed of what has become known as the 'don't-eat me' signal CD47, which is a protein broadly expressed on normal cells and often overexpressed on cancer cells, and its counter-receptor, the myeloid inhibitory immunoreceptor SIRPα...
March 2017: Immunological Reviews
https://www.readbyqxmd.com/read/28255718/studying-immunoreceptor-signaling-in-human-t-cells-using-electroporation-of-in-vitro-transcribed-mrna
#6
Omkar Kawalekar, Carl H June, Michael C Milone
The recognition bestowed upon T lymphocytes as key mediators of cellular immunity has been further attested by recent successful clinical studies using genetically modified T cells. With an ever-growing interest in the application of T cells to treat human malignancies, studying the molecular mechanisms of T cell activation, signaling, and function has become imperative. This, therefore, calls for the development of new easy-to-use and accurate models to investigate the biological phenomena that begin at the synaptic levels of T cell and antigen interactions to the ultimate exhaustion and death of the T cell...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28155597/astrocytic-expression-of-the-immunoreceptor-cd300f-protects-hippocampal-neurons-from-amyloid-%C3%AE-oligomer-toxicity-in-vitro
#7
Thiago Zaqueu Lima, Luis Roberto Sardinha, Joan Sayós, Luiz Eugênio Mello, Hugo Peluffo
BACKGROUND: Astrocytes contribute to neuroinflammation that accompanies neurodegenerative disorders such as Alzheimer's disease (AD). In this sense, the toxicity of these diseases might be attenuated through the modulation of astrocytic inflammatory responses. Recently, the CD300f immunoreceptor was described as a new member of the CD300 immunoreceptor family, showing promising modulatory properties. OBJECTIVE: Here, we investigated whether overexpression of hCD300f (the human isoform of CD300f) in astrocytes protects hippocampal neurons against the degeneration induced by amyloid-beta (Aβ) oligomer...
February 2, 2017: Current Alzheimer Research
https://www.readbyqxmd.com/read/28153581/delivery-of-tlr7-agonist-to-monocytes-and-dendritic-cells-by-dcir-targeted-liposomes-induces-robust-production-of-anti-cancer-cytokines
#8
Thomas C B Klauber, Janne M Laursen, Daniel Zucker, Susanne Brix, Simon S Jensen, Thomas L Andresen
Tumor immune escape is today recognized as an important cancer hallmark and is therefore a major focus area in cancer therapy. Monocytes and dendritic cells (DCs), which are central to creating a robust anti-tumor immune response and establishing an anti-tumorigenic microenvironment, are directly targeted by the tumor escape mechanisms to develop immunosuppressive phenotypes. Providing activated monocytes and DCs to the tumor tissue is therefore an attractive way to break the tumor-derived immune suppression and reinstate cancer immune surveillance...
January 30, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28128200/the-immunoreceptor-nkg2d-promotes-tumour-growth-in-a-model-of-hepatocellular-carcinoma
#9
Sam Sheppard, Joana Guedes, Anna Mroz, Anastasia-Maria Zavitsanou, Hiromi Kudo, Stephen M Rothery, Panagiotis Angelopoulos, Robert Goldin, Nadia Guerra
Inflammation is recognized as one of the drivers of cancer. Yet, the individual immune components that possess pro- and anti-tumorigenic functions in individual cancers remain largely unknown. NKG2D is a potent activating immunoreceptor that has emerged as an important player in inflammatory disorders besides its well-established function as tumour suppressor. Here, we provide genetic evidence of an unexpected tumour-promoting effect of NKG2D in a model of inflammation-driven liver cancer. Compared to NKG2D-deficient mice, NKG2D-sufficient mice display accelerated tumour growth associated with, an increased recruitment of memory CD8(+)T cells to the liver and exacerbated pro-inflammatory milieu...
January 27, 2017: Nature Communications
https://www.readbyqxmd.com/read/28127756/absence-of-dcir1-reduces-the-mortality-rate-of-endotoxemic-hepatitis-in-mice
#10
Toshifumi Ishiguro, Testuya Fukawa, Kotaro Akaki, Koji Nagaoka, Tatsuki Takeda, Yoichiro Iwakura, Kayo Inaba, Kazuhiko Takahara
Dendritic cell immunoreceptor (DCIR) is a C-type lectin with an immunoreceptor tyrosine-based inhibitory motif (ITIM). Mice lacking DCIR1 (Dcir1(-/-) mice) show higher susceptibility to chronic arthritis with increasing age, suggesting that DCIR1 is involved in immune modulation via its ITIM. However, the role of DCIR1 in acute immune responses is not clear. In this study, we explored its role in acute experimental hepatitis. Upon injection of d-galactosamine and lipopolysaccharide, Dcir1(-/-) mice showed decreased mortality rates and serum levels of alanine aminotransferase (ALT)...
January 26, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28077173/is-cd47-an-innate-immune-checkpoint-for-tumor-evasion
#11
REVIEW
Xiaojuan Liu, Hyunwoo Kwon, Zihai Li, Yang-Xin Fu
Cluster of differentiation 47 (CD47) (also known as integrin-associated protein) is a ubiquitously expressed glycoprotein of the immunoglobulin superfamily that plays a critical role in self-recognition. Various solid and hematologic cancers exploit CD47 expression in order to evade immunological eradication, and its overexpression is clinically correlated with poor prognoses. One essential mechanism behind CD47-mediated immune evasion is that it can interact with signal regulatory protein-alpha (SIRPα) expressed on myeloid cells, causing phosphorylation of the SIRPα cytoplasmic immunoreceptor tyrosine-based inhibition motifs and recruitment of Src homology 2 domain-containing tyrosine phosphatases to ultimately result in delivering an anti-phagocytic-"don't eat me"-signal...
January 11, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28073159/polymeric-immunoglobulin-receptor-promotes-tumor-growth-in-hepatocellular-carcinoma
#12
Xihua Yue, Jing Ai, Yang Xu, Yi Chen, Min Huang, Xinying Yang, Bo Hu, Haotian Zhang, Changxi He, Xinrong Yang, Weiguo Tang, Xia Peng, Liwei Dong, Hongyang Wang, Jia Fan, Jian Ding, Meiyu Geng
Deregulation of the immune system is believed to contribute to cancer malignancy, which has led to recent therapeutic breakthroughs facilitating antitumor immunity. In a malignant setting, immunoglobulin receptors, which are fundamental components of the human immune system, fulfill paradoxical roles in cancer pathogenesis. This study describes a previously unrecognized pro-oncogenic function of polymeric immunoglobulin receptor (pIgR) in the promotion of cell transformation and proliferation. Mechanistically, pIgR overexpression is associated with Yes activation, which is required for pIgR-induced oncogenic growth...
January 10, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28069953/c-type-lectin-receptor-dcir-modulates-immunity-to-tuberculosis-by-sustaining-type-i-interferon-signaling-in-dendritic-cells
#13
Anthony Troegeler, Ingrid Mercier, Céline Cougoule, Danilo Pietretti, André Colom, Carine Duval, Thien-Phong Vu Manh, Florence Capilla, Renaud Poincloux, Karine Pingris, Jérôme Nigou, Jörg Rademann, Marc Dalod, Frank A W Verreck, Talal Al Saati, Geanncarlo Lugo-Villarino, Bernd Lepenies, Denis Hudrisier, Olivier Neyrolles
Immune response against pathogens is a tightly regulated process that must ensure microbial control while preserving integrity of the infected organs. Tuberculosis (TB) is a paramount example of a chronic infection in which antimicrobial immunity is protective in the vast majority of infected individuals but can become detrimental if not finely tuned. Here, we report that C-type lectin dendritic cell (DC) immunoreceptor (DCIR), a key component in DC homeostasis, is required to modulate lung inflammation and bacterial burden in TB...
January 24, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27984101/imaging-flow-cytometry-and-gst-pulldown-assays-provide-new-insights-into-channel-catfish-leukocyte-immune-type-receptor-mediated-phagocytic-pathways
#14
Myron A Zwozdesky, Chenjie Fei, Dustin M E Lillico, James L Stafford
Channel catfish (Ictalurus punctatus) leukocyte immune-type receptors (IpLITRs) control various innate immune cell effector responses including the phagocytic process. This large immunoregulatory receptor family also consists of multiple receptor-types with variable signaling abilities that is dependent on their inherent or acquired tyrosine-containing cytoplasmic tail (CYT) regions. For example, IpLITR 2.6b associates with the immunoreceptor tyrosine-based activation motif (ITAM)-containing adaptor molecule IpFcRγ-L, and when expressed in mammalian cells it activates phagocytosis using a similar profile of intracellular signaling mediators that also regulate the prototypical mammalian Fc receptor (FcR) phagocytic pathway...
October 27, 2016: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/27958302/structural-basis-for-human-pecam-1-mediated-trans-homophilic-cell-adhesion
#15
Menglong Hu, Hongmin Zhang, Qun Liu, Quan Hao
Cell adhesion involved in signal transduction, tissue integrity and pathogen infection is mainly mediated by cell adhesion molecules (CAM). One CAM member, platelet-endothelial-cell adhesion molecule-1 (PECAM-1), plays an important role in tight junction among endothelia cells, leukocyte trafficking, and immune response through its homophilic and heterophilic binding patterns. Both kinds of interactions, which lead to endogenous and exogenous signal transmission, are derived from extracellular immunoglobulin-like (IgL) domains and cytoplasmic immunoreceptor tyrosine-based inhibitory motifs (ITIMs) of PECAM-1...
December 13, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27889398/recognition-of-mycobacterial-lipids-by-immune-receptors
#16
REVIEW
Eri Ishikawa, Daiki Mori, Sho Yamasaki
Mycobacterium tuberculosis (Mtb), the causative agent of tuberculosis (TB), infects one-third of the world's population and causes 1.5 million deaths each year. The cell envelopes of mycobacteria comprise a wealth of unique glycolipids, including trehalose-6,6'-dimycolate (TDM), lipoarabinomannan (LAM), lipomannan (LM), and phosphatidylinositol (PI) mannosides (PIMs). These lipids are important modulators of the host immune responses during infection and in some cases have been used as adjuvants [e.g., complete Freund's adjuvant (CFA)]...
January 2017: Trends in Immunology
https://www.readbyqxmd.com/read/27836913/immunoreceptor-cd300a-on-mast-cells-and-dendritic-cells-regulates-neutrophil-recruitment-in-a-murine-model-of-sepsis
#17
Kankanam Gamage Sanath Udayanga, Yoshiyuki Nakamura, Chigusa Nakahashi-Oda, Akira Shibuya
Sepsis is a life-threatening syndrome caused by abnormal host immune responses against bacterial infection. Although innate immune cells are known to be important in the pathogenesis of sepsis, how their activation is regulated during sepsis remains incompletely understood. Here, we examined the role of the inhibitory immunoreceptor CD300a, which is expressed on various types of myeloid cells, in the pathogenesis of sepsis induced by cecal ligation and puncture (CLP). To this end, we used mice in which CD300a was specifically deleted on mast cells (MCs; Cd300a (fl/fl) Mcpt5-Cre), dendritic cells (DCs; Cd300a (fl/fl) Itgax-Cre), or macrophages and neutrophils (Cd300a (fl/fl) Lyz2-Cre)...
December 2016: International Immunology
https://www.readbyqxmd.com/read/27795427/the-glycoprotein-b-cytoplasmic-domain-lysine-cluster-is-critical-for-varicella-zoster-virus-cell-cell-fusion-regulation-and-infection
#18
Edward Yang, Ann M Arvin, Stefan L Oliver
The conserved glycoproteins gB and gH-gL are essential for herpesvirus entry and cell-cell fusion induced syncytium formation, a characteristic of varicella-zoster virus (VZV) pathology in skin and sensory ganglia. VZV syncytium formation, which has been implicated in the painful condition of postherpetic neuralgia, is regulated by the cytoplasmic domains of gB (gBcyt) via an immunoreceptor tyrosine-based inhibition motif (ITIM) and gH (gHcyt). A lysine cluster (K894, K897, K898, and K900) in the VZV gBcyt was identified by sequence alignment to be conserved among alphaherpesviruses, suggesting a functional role...
January 1, 2017: Journal of Virology
https://www.readbyqxmd.com/read/27746174/dendritic-cell-inhibitory-receptor-4-dcir4-is-preferentially-expressed-on-inflammatory-and-patrolling-monocytes
#19
Yosuke Kameda, Motoki Hanayama, Atsushi Kishimoto, Masahiko Kume, Kazuo Yamamoto, Naoki Matsumoto
Dendritic cell inhibitory receptor 4 (DCIR4, Clec4a1) is a lectin receptor and a member of mouse dendritic cell immunoreceptor family. Due to the lack of antibodies against DCIR4, expression of DCIR4 protein remains unknown. In this study, we established a specific monoclonal antibody against DCIR4 and investigated the expression of DCIR4 among immune cells. We found that DCIR4 was expressed on non-granulocytic subsets of CD11b(+) cells in various immune organs including bone marrow, peripheral blood, spleen, skin-associated lymph nodes and mesenteric lymph nodes...
October 13, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27742834/tolerogenic-immunoreceptor-ilt3-lilrb4-paradoxically-marks-pathogenic-auto-antibody-producing-plasmablasts-and-plasma-cells-in-non-treated-sle
#20
Masanori Inui, Akiko Sugahara-Tobinai, Hiroshi Fujii, Ari Itoh-Nakadai, Hidehiro Fukuyama, Tomohiro Kurosaki, Tomonori Ishii, Hideo Harigae, Toshiyuki Takai
Plasmablasts and plasma cells (PBs and PCs) producing pathogenic auto-antibodies in patients with systemic autoimmune diseases could be a better target for specific therapies for the disease than general immunosuppression or pan- or activated B-cell targeting. Our previous study indicated that leukocyte immunoglobulin-like receptor (LILR) B4 (B4, also known as ILT3/LIR-5/CD85k), a tolerogenic receptor in antigen-presenting cells, is ectopically expressed on the PB/PC surface in healthy individuals. Here, we show that the enlarged population size of PBs/PCs with augmented B4 expression is characteristic in non-treated systemic lupus erythematosus (SLE)...
December 2016: International Immunology
keyword
keyword
95243
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"