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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
#1
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
#2
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 inhibitory receptors 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
#3
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
#4
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...
September 7, 2017: Virus Research
https://www.readbyqxmd.com/read/28702029/inflammation-related-gene-polymorphisms-associated-with-primary-immune-thrombocytopenia
#5
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
#6
(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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
https://www.readbyqxmd.com/read/27626490/altered-expression-of-cd226-and-cd96-on-natural-killer-cells-in-patients-with-pancreatic-cancer
#17
Yun-Peng Peng, Chun-Hua Xi, Yi Zhu, Ling-Di Yin, Ji-Shu Wei, Jing-Jing Zhang, Xin-Chun Liu, Song Guo, Yue Fu, Yi Miao
The progression of pancreatic cancer (PC) is significantly associated with tumor immune escape, which may be associated with nature killer (NK) cell dysfunction. CD226, CD96, and TIGIT, which share the ligand CD155, play important roles in the regulation of NK cell function. The present study was conducted to investigate the roles of these molecules in NK cells from PC patients. Expression of these molecules on NK cells was detected from samples of 92 pancreatic cancer patients and 40 healthy controls. The expression of CD155 was also evaluated by immunohistochemistry in 88 pancreatic cancer tissues...
October 11, 2016: Oncotarget
https://www.readbyqxmd.com/read/27622043/il12-mediated-sensitizing-of-t-cell-receptor-dependent-and-independent-tumor-cell-killing
#18
Matthias Braun, Marie L Ress, Young-Eun Yoo, Claus J Scholz, Matthias Eyrich, Paul G Schlegel, Matthias Wölfl
Interleukin 12 (IL12) is a key inflammatory cytokine critically influencing Th1/Tc1-T-cell responses at the time of initial antigen encounter. Therefore, it may be exploited for cancer immunotherapy. Here, we investigated how IL12, and other inflammatory cytokines, shape effector functions of human T-cells. Using a defined culture system, we followed the gradual differentiation and function of antigen-specific CD8(+) T cells from their initial activation as naïve T cells through their expansion phase as early memory cells to full differentiation as clonally expanded effector T cells...
July 2016: Oncoimmunology
https://www.readbyqxmd.com/read/27620276/molecular-pathways-targeting-cd96-and-tigit-for-cancer-immunotherapy
#19
Stephen J Blake, William C Dougall, John J Miles, Michele W L Teng, Mark J Smyth
The receptors CD96 and TIGIT are expressed on the surface of T and natural killer (NK) cells, and recent studies suggest both play important inhibitory roles in immune function. CD96 has been shown to modulate immune cell activity in mice, with Cd96(-)(/)(-) mice displaying hypersensitive NK-cell responses to immune challenge and significant tumor resistance. TIGIT overexpression has been shown to reduce NK-cell-mediated cytotoxicity. TIGIT is also upregulated on T cells during cancer and chronic viral infection, with expression associated with effector T-cell exhaustion and increased regulatory T-cell suppression...
November 1, 2016: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/27551152/mhc-ii-resident-peritoneal-and-pleural-macrophages-rely-on-irf4-for-development-from-circulating-monocytes
#20
Ki-Wook Kim, Jesse W Williams, Ya-Ting Wang, Stoyan Ivanov, Susan Gilfillan, Marco Colonna, Herbert W Virgin, Emmanuel L Gautier, Gwendalyn J Randolph
Peritoneal and pleural resident macrophages in the mouse share common features and in each compartment exist as two distinct subpopulations: F4/80(+) macrophages and MHC II(+) CD11c(+) macrophages. F4/80(+) macrophages derive from embryonic precursors, and their maintenance is controlled by Gata6. However, the origin and regulatory factors that maintain MHC II(+) macrophages remain unknown. Here, we show that the MHC II(+) macrophages arise postnatally from CCR2-dependent precursors that resemble monocytes...
September 19, 2016: Journal of Experimental Medicine
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