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https://www.readbyqxmd.com/read/29220498/nkg2c-deletion-is-a-risk-factor-for-human-cytomegalovirus-viremia-and-disease-after-lung-transplantation
#1
Hannes Vietzen, Karin Pollak, Claudia Honsig, Peter Jaksch, Elisabeth Puchhammer-Stöckl
Human cytomegalovirus (HCMV) replication is limited by HCMV-specific natural-killer (NK) cell response. Distinct genetic polymorphisms, which are potentially involved in antiviral NK-cell response, have been described. Here, the association between polymorphisms at IgG1 GM3/17, FcγRIIIα/CD16a-158V/F, NKG2Cwt/del, CD226/rs727088 and rs763361, respectively, and HCMV-viremia and disease was investigated in 98 lung transplant recipients (LTRs), within 9 months after stop of post-transplant HCMV-prophylaxis. From all variants, only the NKG2Cwt/wt genotype was significantly associated with freedom from HCMV-viremia (P= 0...
December 6, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29217528/t-cells-expressing-checkpoint-receptor-tigit-are-enriched-in-follicular-lymphoma-tumors-and-characterized-by-reversible-suppression-of-t-cell-receptor-signaling
#2
Sarah E Josefsson, Kanutte Huse, Arne Kolstad, Klaus Beiske, Daniela Pende, Chloé B Steen, Else Marit Inderberg, Ole Christian Lingjærde, Bjørn Østenstad, Erlend B Smeland, Ronald Levy, Jonathan M Irish, June H Myklebust
PURPOSE: T cells infiltrating follicular lymphoma (FL) tumors are considered dysfunctional, yet the optimal target for immune checkpoint blockade is unknown. Characterizing co-inhibitory receptor expression patterns and signaling responses in FL T-cell subsets might reveal new therapeutic targets. EXPERIMENTAL DESIGN: Surface expression of 9 co-inhibitory receptors governing T-cell function was characterized in T-cell subsets from FL lymph node tumors and from healthy donor tonsils and peripheral blood samples, using high-dimensional flow cytometry...
December 7, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29202043/epstein-barr-virus-induces-adhesion-receptor-cd226-dnam-1-expression-during-primary-b-cell-transformation-into-lymphoblastoid-cell-lines
#3
Lisa Grossman, Chris Chang, Joanne Dai, Pavel A Nikitin, Dereje D Jima, Sandeep S Dave, Micah A Luftig
Epstein-Barr virus (EBV), an oncogenic herpesvirus, infects and transforms primary B cells into immortal lymphoblastoid cell lines (LCLs), providing a model for EBV-mediated tumorigenesis. EBV transformation stimulates robust homotypic aggregation, indicating that EBV induces molecules that mediate cell-cell adhesion. We report that EBV potently induced expression of the adhesion molecule CD226, which is not normally expressed on B cells. We found that early after infection of primary B cells, EBV promoted an increase in CD226 mRNA and protein expression...
November 2017: MSphere
https://www.readbyqxmd.com/read/29154208/characteristics-of-nk-cells-from-leukemic-microenvironment-in-mll-af9-induced-acute-myeloid-leukemia
#4
Feifei Yang, Rong Wang, Wenli Feng, Chong Chen, Xiao Yang, Lina Wang, Yuting Hu, Qian Ren, Guoguang Zheng
NK cells are indispensable components of tissue microenvironment and play vital in both innate and adaptive immunity. The activation and function of NK cells are affected by tumor microenvironments. NK cells are also important players in leukemic microenvironment. However, their characteristics in leukemic microenvironment, including maturation status, phenotype, subpopulations and functional roles especially immunoregulatory potential, have not been well established. Here, we studied these characteristics of NK cells in MLL-AF9 induced mouse acute myeloid leukemia (AML) model...
November 16, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28920003/cd226-natural-killer-cells-fail-to-establish-stable-contacts-with-cancer-cells-and-show-impaired-control-of-tumor-metastasis-in-vivo
#5
Ji Sung Kim, Bo Ram Shin, Hong Kyung Lee, Jae Hee Lee, Ki Hun Kim, Jeong Eun Choi, A Young Ji, Jin Tae Hong, Youngsoo Kim, Sang-Bae Han
CD226 is an activating receptor expressed on natural killer (NK) cells, CD8(+) T cells, and other immune cells. Upon binding to its ligands expressed on target cells, CD226 activates intracellular signaling that triggers cytokine production and degranulation in NK cells. However, the role of CD226 in contact dynamics between NK and cancer cells has remained unclear. Our time-lapse images showed that individual wild-type CD226(+) NK cells contacted B16F10 melanoma cells for 23.7 min, but Cd226(-/-) NK cells only for 12...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28893624/cd8-t-cells-expressing-both-pd-1-and-tigit-but-not-cd226-are-dysfunctional-in-acute-myeloid-leukemia-aml-patients
#6
Mengjie Wang, Jin Bu, Maohua Zhou, Jessica Sido, Yu Lin, Guanfang Liu, Qiwen Lin, Xiuzhang Xu, Jianmei W Leavenworth, Erxia Shen
Acute myeloid leukemia (AML) is one of the most common types of leukemia among adults with an overall poor prognosis and very limited treatment management. Immune checkpoint blockade of PD-1 alone or combined with other immune checkpoint blockade has gained impressive results in murine AML models by improving anti-leukemia CD8(+)T cell function, which has greatly promoted the strategy to utilize combined immune checkpoint inhibitors to treat AML patients. However, the expression profiles of these immune checkpoint receptors, such as co-inhibitory receptors PD-1 and TIGIT and co-stimulatory receptor CD226, in T cells from AML patients have not been clearly defined...
September 8, 2017: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/28880014/chimeric-antigen-receptor-car-transduced-natural-killer-cells-in-tumor-immunotherapy
#7
REVIEW
Yuan Hu, Zhi-Gang Tian, Cai Zhang
Natural killer (NK) cells are potential effector cells in cell-based cancer immunotherapy, particularly in the control of hematological malignancies. The chimeric antigen receptor (CAR) is an artificially modified fusion protein that consists of an extracellular antigen recognition domain fused to an intracellular signaling domain. T cells genetically modified with a CAR have demonstrated remarkable success in the treatment of hematological cancers. Compared to T cells, CAR-transduced NK cells (CAR-NK) exhibit several advantages, such as safety in clinical use, the mechanisms by which they recognize cancer cells, and their abundance in clinical samples...
September 7, 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/28870470/poliovirus-receptor-more-than-a-simple-viral-receptor
#8
REVIEW
Jonathan R Bowers, James M Readler, Priyanka Sharma, Katherine J D A Excoffon
The human poliovirus receptor (PVR) is a cell surface protein with a multitude of functions in human biology. PVR was initially identified as the receptor for the human poliovirus and recent discoveries have given a greater insight into both its morphology and its function. Alternative splicing of the PVR gene results in a total of 4 alternatively spliced isoforms. Two of these isoforms lack a complete transmembrane domain and are considered soluble and block viral infection; the remaining two transmembrane isoforms differ only at their extreme C-terminal domains resulting in differential localization in epithelia and polarity of viral infection...
October 15, 2017: Virus Research
https://www.readbyqxmd.com/read/28702029/inflammation-related-gene-polymorphisms-associated-with-primary-immune-thrombocytopenia
#9
Ju Li, Sai Ma, Linlin Shao, Chunhong Ma, Chengjiang Gao, Xiao-Hui Zhang, Ming Hou, Jun Peng
Primary immune thrombocytopenia (ITP) is an acquired autoimmune disease characterized by a reduced platelet count and an increased risk of bleeding. Although immense research has improved our understanding of ITP, the pathogenesis remains unclear. Here, we investigated the involvement of 25 single-nucleotide polymorphisms (SNPs) of the inflammation-related genes, including CD24, CD226, FCRL3, IL2, IRF5, ITGAM, NLRP3, CARD8, PTPN22, SH2B2, STAT4, TNFAIP3, and TRAF1, in the pathogenesis and treatment response of ITP...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28636502/monoclonal-antibody-tx94-human-dnax-accessory-molecule-1-cd226
#10
(no author information available yet)
No abstract text is available yet for this article.
June 2017: Monoclonal Antibodies in Immunodiagnosis and Immunotherapy
https://www.readbyqxmd.com/read/28561023/expression-of-cd226-is-associated-to-but-not-required-for-nk-cell-education
#11
Arnika K Wagner, Nadir Kadri, Johanna Snäll, Petter Brodin, Susan Gilfillan, Marco Colonna, Günter Bernhardt, Petter Höglund, Klas Kärre, Benedict J Chambers
DNAX accessory molecule-1 (DNAM-1, also known as CD226) is an activating receptor expressed on subsets of natural killer (NK) and T cells, interacts with its ligands CD155 or CD112, and has co-varied expression with inhibitory receptors. Since inhibitory receptors control NK-cell activation and are necessary for MHC-I-dependent education, we investigated whether DNAM-1 expression is also involved in NK-cell education. Here we show an MHC-I-dependent correlation between DNAM-1 expression and NK-cell education, and an association between DNAM-1 and NKG2A that occurs even in MHC class I deficient mice...
May 31, 2017: Nature Communications
https://www.readbyqxmd.com/read/28498033/development-and-characterization-of-novel-monoclonal-antibodies-against-human-dnam-1
#12
Genki Okumura, Fumie Abe, Rei Hirochika, Akira Shibuya, Kazuko Shibuya
DNAM-1 (CD226) is an activating immunoreceptor expressed on lymphocytes and myeloid cells. CD155 and CD112 are the ligands for DNAM-1. DNAM-1 plays an important role in tumor immunity mediated by CD8(+) T cells and NK cells. Moreover, the interaction of DNAM-1 with the ligands contributed to the development of acute graft versus host disease (GVHD) and treatment with anti-DNAM-1 monoclonal antibodies (mAb) dramatically improved acute GVHD in a mouse model, suggesting that DNAM-1 may be a good molecular target for therapy to acute GVHD in human...
June 2017: Monoclonal Antibodies in Immunodiagnosis and Immunotherapy
https://www.readbyqxmd.com/read/28438433/contribution-of-inhibitory-receptor-tigit-to-nk-cell-education
#13
Yuke He, Hui Peng, Rui Sun, Haiming Wei, Hans-Gustaf Ljunggren, Wayne M Yokoyama, Zhigang Tian
Engagement of inhibitory receptors by cognate host MHC-I molecules triggers NK cell education, resulting in functional maturation and allowing NK cells to sense missing-self. However, NK cells also express inhibitory receptors for non-MHC-I ligands and their role in NK cell education is poorly understood. TIGIT is a recently identified inhibitory receptor that recognizes a non-MHC-I ligand CD155. Here, we demonstrated that TIGIT(+) NK cells from wild-type mice exerted augmented responsiveness to various stimuli, including targets that lacked expression of CD155 ligand...
July 2017: Journal of Autoimmunity
https://www.readbyqxmd.com/read/28434122/the-status-of-pulmonary-fibrosis-in-systemic-sclerosis-is-associated-with-irf5-stat4-irak1-and-ctgf-polymorphisms
#14
Wenjie Zhao, Xiaoyang Yue, Kuai Liu, Junfeng Zheng, Runda Huang, Jun Zou, Gabriela Riemekasten, Frank Petersen, Xinhua Yu
Pulmonary fibrosis (PF) is one of the leading causes of death in systemic sclerosis (SSc) patients. Although all SSc patients are characterized by autoimmunity, only part of them suffer from PF, suggesting that beside autoimmunity, some additional factors are involved in the initiation of PF in SSc. In this study, we aimed to identify genetic polymorphisms associated with the status of PF in SSc. We performed that an exhaustive search of the PubMed database was performed to identify eligible studies. Then, a comprehensive meta-analysis was performed by comparing PF(+)-SSc and PF(-)-SSc patients to identify genetic polymorphisms associated with the status of PF in SSc...
August 2017: Rheumatology International
https://www.readbyqxmd.com/read/28395975/increased-soluble-cd226-in-sera-of-patients-with-cutaneous-t-cell-lymphoma-mediates-cytotoxic-activity-against-tumor-cells-via-cd155
#15
Naomi Takahashi, Makoto Sugaya, Hiraku Suga, Tomonori Oka, Makiko Kawaguchi, Tomomitsu Miyagaki, Hideki Fujita, Takashi Inozume, Shinichi Sato
Immune checkpoint therapy, which targets regulatory pathways in T cells to enhance antitumor immune responses, has led to important clinical advances. CD155 is expressed in various types of cancer, and this surface molecule on tumor cells functions either as a co-stimulatory molecule or a co-inhibitory molecule, depending on its receptor. CD226, a CD155 ligand, is mainly expressed on natural killer cells and CD8(+) T cells, playing important roles in natural killer cell-mediated cytotoxicity. In this study, we investigated the expression and function of CD155 and CD226 in cutaneous T-cell lymphoma (CTCL)...
August 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28258695/tigit-and-cd96-new-checkpoint-receptor-targets-for-cancer-immunotherapy
#16
REVIEW
William C Dougall, Sema Kurtulus, Mark J Smyth, Ana C Anderson
While therapies targeting the co-inhibitory or immune checkpoint receptors PD-1 and CTLA-4 have shown remarkable success in many cancers, not all patients benefit from these therapies. This has catalyzed enormous interest in the targeting of other immune checkpoint receptors. In this regard, TIGIT and CD96 have recently entered the limelight as novel immune checkpoint receptor targets. TIGIT and CD96 together with the co-stimulatory receptor CD226 form a pathway that is analogous to the CD28/CTLA-4 pathway, in which shared ligands and differential receptor:ligand affinities fine-tune the immune response...
March 2017: Immunological Reviews
https://www.readbyqxmd.com/read/28137888/reply-to-liu-et-al-haplotype-matters-cd226-polymorphism-as-a-potential-trigger-for-impaired-immune-regulation-in-multiple-sclerosis
#17
Catharina C Gross, Gerd Meyer Zu Hörste, Andreas Schulte-Mecklenbeck, Luisa Klotz, Sven G Meuth, Heinz Wiendl
No abstract text is available yet for this article.
February 7, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27883251/mir-892a-promotes-hepatocellular-carcinoma-cells-proliferation-and-invasion-through-targeting-cd226
#18
Baoxing Jia, Ludong Tan, Zhe Jin, Yan Jiao, Yu Fu, Yahui Liu
Our study is aim to investigate the influence of miR-892a on proliferative and invasive activities of human hepatocellular carcinoma (HCC) cells through regulating CD226 expression. QRT-PCR was used to detect the expression levels of miR-892a and CD226 mRNA in HCC tissues and adjacent tissues or HCC cells and normal cells whereas Western Blot was used to detect the CD226 protein expression in tissue and cell samples. Then HuH-7 cell line was selected for following assays and respectively transfected with miR-892a mimics, miR-NC, Plenti-GIII-Ubc-CD226, and Plenti-GIII-Ubc followed by qRT-PCR assay to detect the miR-892a and CD226 expression...
June 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/27733551/distinct-roles-for-human-cytomegalovirus-immediate-early-proteins-ie1-and-ie2-in-the-transcriptional-regulation-of-mica-and-pvr-cd155-expression
#19
Benedetta Pignoloni, Cinzia Fionda, Valentina Dell'Oste, Anna Luganini, Marco Cippitelli, Alessandra Zingoni, Santo Landolfo, Giorgio Gribaudo, Angela Santoni, Cristina Cerboni
Elimination of virus-infected cells by cytotoxic lymphocytes is triggered by activating receptors, among which NKG2D and DNAM-1/CD226 play an important role. Their ligands, that is, MHC class I-related chain (MIC) A/B and UL16-binding proteins (ULBP)1-6 (NKG2D ligand), Nectin-2/CD112, and poliovirus receptor (PVR)/CD155 (DNAM-1 ligand), are often induced on virus-infected cells, although some viruses, including human CMV (HCMV), can block their expression. In this study, we report that infection of different cell types with laboratory or low-passage HCMV strains upregulated MICA, ULBP3, and PVR, with NKG2D and DNAM-1 playing a role in NK cell-mediated lysis of infected cells...
November 15, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27722794/gene-gene-interaction-between-cd40-and-cd226-gene-on-systemic-lupus-erythematosus-in-the-chinese-han-population
#20
Daqing Nie, Hongbo Li, Guixiu Yan, Zhengyi Wang, Zhaomin He, Wenyu Zhou
The aim of the study is to investigate the impact of CD40 and CD226 gene single-nucleotide polymorphism (SNP) and additional gene-gene interaction on systemic lupus erythematosus (SLE) risk in Chinese Han populations. Three SNPs were selected for genotyping in the case-control study: rs4810485, rs763361, and rs3765456. Logistic regression was performed to investigate association between SNP within CD40 and CD226 and SLE. Generalized multifactor dimensionality reduction (GMDR) was used to analyze the interaction among three SNPs...
December 2016: Rheumatology International
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