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B7-H1

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https://www.readbyqxmd.com/read/29190910/the-tissue-distribution-and-significance-of-b7-h4-in-laryngeal-carcinoma
#1
Lili Chen, Meihua Jin, Chunshi Li, Yongjun Shang, Qinggao Zhang
The costimulatory signals CD28 and B7 have been shown to control tumor invasion and metastasis by regulating T cell activation, whereas the distribution characteristics of B7-associated proteins in laryngeal carcinoma (LC) tissue are still unclear. Here, the expression of members of the B7 superfamily, including B7-H1 (PD-L1), B7-DC (PD-L2) and B7-H4, in fifty-two LC samples was determined by immunohistochemistry, and the relationship between B7-H4 and epithelial-mesenchymal transition (EMT)-associated markers was further assessed by immunofluorescence double staining...
November 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/29170671/b7-h1-influences-the-accumulation-of-virus-specific-tissue-resident-memory-t-cells-in-the-central-nervous-system
#2
Kevin D Pavelko, Michael P Bell, Susan M Harrington, Haidong Dong
Therapies that target the PD-1/B7-H1 axis have revolutionized cancer treatment, yet precise knowledge of how this pathway provides benefit continues to evolve. Here, we report a novel role for the immune checkpoint ligand B7-H1 in the accumulation of tissue-resident memory CD8(+) T-cells (TRM). After intracranial infection, Theiler's murine encephalomyelitis virus (TMEV) generates TRM that are maintained in the central nervous system (CNS) tissues of B7-H1(WT) animals. Although no differences in acute T-cell responses between B7-H1(WT) and B7-H1(KO) are observed, at long-term periods post-infection the maintenance of CD8(+) TRM is diminished in B7-H1(KO) animals...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29163808/cd4-t-cell-specific-b7-h1-selectively-inhibits-proliferation-of-na%C3%A3-ve-t-cells-and-th17-differentiation-in-experimental-autoimmune-encephalomyelitis
#3
Sheng-Jia Shi, Mei-Ling Ding, Li-Juan Wang, Jie-Heng Wu, Dong-Hui Han, Guo-Xu Zheng, Zhang-Yan Guo, Wen-Jin Xi, Wei-Jun Qin, An-Gang Yang, Wei-Hong Wen
It is widely acknowledged that interleukin 17-producing T helper (Th17) cells are critically participant in the pathogenesis of multiple sclerosis. In the current study, we identified that the expression of CD4(+)T cells specific co-inhibitory molecule B7-homologue 1(B7-H1) in spleenocytes and mononuclear cells isolated from brains and spinal cord were positive correlated with Th1 and Th17 cells generation and disease severity in experimental autoimmune encephalomyelitis (EAE). Furthermore, B7-H1 transgenic mice developed milder EAE symptoms and fewer Th17 cells than B7-H1 wild type mice...
October 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/29115601/ginsenoside-rg3-targets-cancer-stem-cells-and-tumor-angiogenesis-to-inhibit-colorectal-cancer-progression-in-vivo
#4
Yu-Chen Tang, Yan Zhang, Jin Zhou, Qiaoming Zhi, Meng-Yao Wu, Fei-Ran Gong, Meng Shen, Lu Liu, Min Tao, Bairong Shen, Dong-Mei Gu, Jie Yu, Meng-Dan Xu, Yuan Gao, Wei Li
Anti-angiogenic therapy has been successfully applied to treat colorectal cancer (CRC). Ginsenoside Rg3, derived from the Chinese herb ginseng, has anti-vascularization effects and can inhibit tumor growth and metastasis, and can sensitize cancer cells to chemotherapy. Therefore, in the present study, we investigated whether Rg3 could be appropriate for CRC treatment. Growth of CRC cells was assessed by an MTT (methyl thiazolyl tetrazolium) assay in vitro and using orthotopic xenograft models in vivo. mRNA expression was evaluated using real-time PCR...
November 1, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/29104629/association-between-b7-h1-and-cervical-cancer-b7-h1-impairs-the-immune-response-in-human-cervical-cancer-cells
#5
Jianying Tao, Jianrong Dai, Shunyu Hou
The aim of the present study was to determine the preliminary mechanism of action of B7 homolog 1 (B7-H1) and investigate the association between B7-H1 and cervical cancer. The expression of B7 family proteins was measured in cervical cancer cells. Cervical cancer cells were co-cultured with T lymphocytes. An ELISA assay was subsequently conducted to analyze cytokine concentrations in the supernatants of the cultured T cells in cervical cancer cells and B7-H1 downregulated cells. Levels of interleukin (IL)-1β, IL-6 and tumor necrosis factor-α mRNA in mice injected with cervical cancer cells or B7-H1 downregulated cells were measured by reverse transcription-quantitative polymerase chain reaction...
November 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29090321/cross-talk-between-tnf-%C3%AE-and-ifn-%C3%AE-signaling-in-induction-of-b7-h1-expression-in-hepatocellular-carcinoma-cells
#6
Na Li, Jianing Wang, Na Zhang, Mengwei Zhuang, Zhaoyun Zong, Jiahuan Zou, Guosheng Li, Xiaoyan Wang, Huaiyu Zhou, Lining Zhang, Yongyu Shi
Clinical benefit from immunotherapy of B7-H1/PD-1 checkpoint blockade indicates that it is important to understand the regulatory mechanism of B7-H1 expression in cancer cells. As an adaptive response to the endogenous antitumor immunity, B7-H1 expression is up-regulated in HCC cells. B7-H1 expression is induced mainly by IFN-γ released from tumor-infiltrating T cells in HCC. In addition, HCC is a prototype of inflammation-related cancer and TNF-α is a critical component of inflammatory microenvironment of HCC...
October 31, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/29032197/interleukin-22-attenuates-double-stranded-rna-induced-upregulation-of-pd-l1-in-airway-epithelial-cells-via-a-stat3-dependent-mechanism
#7
Nanae Seki, Keiko Kan-O, Koichiro Matsumoto, Satoru Fukuyama, Saaka Hamano, Ken Tonai, Keiichi Ota, Hiromasa Inoue, Yoichi Nakanishi
Double-stranded RNA derived from viruses induces host immune responses. PD-L1, also known as B7-H1, is an immune-checkpoint molecule associated with the escape of viruses from host immune systems, which plays a role in the persistence of viral infection, resulting in exacerbations of underlying diseases such as asthma and chronic obstructive pulmonary disease. Interleukin (IL)-22 is produced from various immune cells and has protective properties on mucosal tissue. The binding of IL-22 to IL-22 receptor induces STAT3 activation...
October 12, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28985469/programmed-cell-death-protein-ligand-1-silencing-with-polyethylenimine-dermatan-sulfate-complex-for-dual-inhibition-of-melanoma-growth
#8
Gijung Kwak, Dongkyu Kim, Gi-Hoon Nam, Sun Young Wang, In-San Kim, Sun Hwa Kim, Ick-Chan Kwon, Yoon Yeo
Programmed cell death protein-1 (PD-1) is a prominent immune checkpoint receptor interacting with its ligand, programmed cell death protein ligand-1 (PD-L1, B7-H1). The PD-1/PD-L1 interaction induces functional exhaustion of tumor-reactive cytotoxic T cells and, thus, interferes with antitumor T-cell immunity. In addition, PD-1/PD-L1 interaction promotes tumorigenesis via the mTOR signaling pathway in a group of cancers including melanoma. Based on the dual functions of PD-1/PD-L1 interactions in tumor progression, we hypothesize that siRNA targeting PD-L1 (siPD-L1) will suppress melanoma growth, acting on both immune checkpoint and intrinsic tumorigenesis pathways...
October 24, 2017: ACS Nano
https://www.readbyqxmd.com/read/28932563/a-systematic-and-genome-wide-correlation-meta-analysis-of-pd-l1-expression-and-targetable-nsclc-driver-genes
#9
Jin Li, Yaoqi Chen, Xiaoshun Shi, Xiaobing Le, Fenglan Feng, Jingyi Chen, Chengzhi Zhou, Yusong Chen, Shuai Wen, Haikang Zeng, Allen M Chen, Yu Zhang
BACKGROUND: Studies have shown that the ligand of programmed cell death protein 1 (B7-H1, CD274 or PD-L1) is related to lung cancer driver genes. Although studies have examined the association between lung cancer driver gene mutations or expression and PD-L1 expression, the present studies have not been mined the correlation systematically and genome-widely. METHODS: All relevant published PD-L1 articles with driver genes data and the RNA-seq dataset from The Cancer Genome Atlas (TCGA) were analyzed...
August 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28753790/positive-pelvic-lymph-nodes-in-prostate-cancer-harbor-immune-suppressor-cells-to-impair-tumor-reactive-t-cells
#10
Vidit Sharma, Haidong Dong, Eugene Kwon, R Jeffrey Karnes
The impact of prostate cancer (PCa) metastases on pelvic lymph nodes in local antitumor immunity remains unknown. We prospectively enrolled ten hormone therapy-naïve men undergoing salvage pelvic lymph node dissection (sPLND) and analyzed their peripheral blood (PB) and positive pelvic lymph nodes (PPLNs) with PCa metastases for tumor-reactive CD8(+) T cells and myeloid-derived suppressor cells (MDSCs) using flow cytometry. MDSCs were stratified into CD14(+) monocytic and CD14(-) granulocytic types. PD-L1/2 expression was also analyzed for MDSCs...
September 21, 2016: European Urology Focus
https://www.readbyqxmd.com/read/28744199/differential-impact-of-mir-21-on-pain-and-associated-affective-and-cognitive-behavior-after-spared-nerve-injury-in-b7-h1-ko-mouse
#11
Franziska Karl, Anne Grießhammer, Nurcan Üçeyler, Claudia Sommer
MicroRNAs (miRNAs) are increasingly recognized as regulators of immune and neuronal gene expression and are potential master switches in neuropathic pain pathophysiology. miR-21 is a promising candidate that may link the immune and the pain system. To investigate the pathophysiological role of miR-21 in neuropathic pain, we assessed mice deficient of B7 homolog 1 (B7-H1), a major inhibitor of inflammatory responses. In previous studies, an upregulation of miR-21 had been shown in mouse lymphocytes. Young (8 weeks), middle-aged (6 months), and old (12 months) B7-H1 ko mice and wildtype littermates (WT) received a spared nerve injury (SNI)...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28687491/site-specific-regulation-of-oral-mucosa-recruiting-cd8-t-cells-in-a-mouse-contact-allergy-model
#12
Worawalun Hirunwidchayarat, Emi Furusawa, Siwen Kang, Tatsukuni Ohno, Shunsuke Takeuchi, Sorasun Rungsiyanont, Miyuki Azuma
Contact allergy is a T cell-mediated, delayed-type hypersensitivity generated by contact exposure of an allergen to the skin and mucosal surface. The clinical manifestations of allergic responses between the skin and oral mucosa vary and the differences in immunopathology have not been clarified. We generated hapten-induced contact hypersensitivity (CH) of the buccal mucosa (BM) in parallel studies with ear skin (ES) CH, and observed several characteristic findings of BM CH. The BM challenge induced more rapid and more severe inflammation than the ES challenge, with abundant granulocyte and CD8(+) T cell infiltration...
September 2, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28677815/variant-snps-at-the-microrna-complementary-site-in-the-b7%C3%A2-h1-3-%C3%A2-untranslated-region-increase-the-risk-of-non%C3%A2-small-cell-lung-cancer
#13
Wenwen Du, Jianjie Zhu, Yanbin Chen, Yuanyuan Zeng, Dan Shen, Nan Zhang, Weiwei Ning, Zeyi Liu, Jian-An Huang
Single nucleotide polymorphisms (SNPs) in microRNA‑binding sites located in the 3'‑untranslated region (UTR) of target genes can have an effect on the interaction of microRNA‑mediated regulation, which results in changes in the expression levels of target genes ultimately associated with cancer risk and patient prognosis. However, the role of SNPs at the 3'‑UTR of B7‑H1 in the susceptibility of non‑small cell lung cancer (NSCLC) remains to be fully elucidated. In the present study, SNPs with a minor allele frequency >10%, which were located at the microRNA complementary site in the PD‑L1 3'‑UTR, were selected via bioinformatic prediction using Ensembl and miRanda 2010...
September 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28539467/b7-h3-expression-in-nsclc-and-its-association-with-b7-h4-pd-l1-and-tumor-infiltrating-lymphocytes
#14
Mehmet Altan, Vasiliki Pelekanou, Kurt A Schalper, Maria Toki, Patricia Gaule, Konstantinos Syrigos, Roy S Herbst, David L Rimm
Purpose: The immune checkpoint PD-1 and its receptor B7-H1 (PD-L1) are successful therapeutic targets in cancer but less is known about other B7 family members. Here, we determined the expression level of B7-H3 protein in non-small cell lung cancer (NSCLC) and evaluated its association with tumor-infiltrating lymphocytes (TIL), PD-L1, B7-H4, and major clinicopathologic characteristics is in 3 NSCLC cohorts.Experimental design: We used multiplexed automated quantitative immunofluorescence (QIF) to assess the levels of B7-H3, PD-L1, B7-H4, and TILs in 634 NSCLC cases with validated antibodies...
September 1, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28461179/immune-characterization-of-the-programmed-death-receptor-pathway-in-high-risk-prostate%C3%A2-cancer
#15
Wesley Baas, Svetlana Gershburg, Danuta Dynda, Kristin Delfino, Kathy Robinson, Daotai Nie, Jennifer Holmes Yearley, Shaheen Alanee
BACKGROUND: Programmed cell death-1 (PD-1), a T-cell inhibitory receptor, and its ligand, PD-L1, have been reported to be expressed in many tumor types, and this expression has led to the development of many drugs targeting the PD-1 pathway. The objective of this study was to determine the expression of PD-1 and PD-L1 in high-grade prostate cancer tissues, and correlate the expression with disease and patient characteristics. MATERIALS AND METHODS: Immunohistochemistry for PD-1 (CD279), PD-L1 (B7-H1), and CD3 was performed and scored from 0 to 5 on prostatectomy/biopsy tissue samples taken from 25 men with high-grade prostate cancer...
April 10, 2017: Clinical Genitourinary Cancer
https://www.readbyqxmd.com/read/28427226/microrna-152-regulates-immune-response-via-targeting-b7-h1-in-gastric-carcinoma
#16
Yaxin Wang, Di Wang, Gengchen Xie, Yuping Yin, Ende Zhao, Kaixiong Tao, Ruidong Li
MiR-152 has been reported may be involved in carcinogenesis in gastric cancer. However, its role has not been comprehensively investigated in gastric cancer. We found miR-152 in human gastric cancer tissues were significantly lower than that in matched adjacent normal tissues. Meanwhile, lower miR-152 was also found in gastric cancer cell lines. The stage, tumor size and lymph node metastasis rate were significant higher in low-miR-152 group in clinical patients. Furthermore, there was a marked correlation between the levels of miR-152 and B7-H1 mRNA in gastric cancer tissues...
April 25, 2017: Oncotarget
https://www.readbyqxmd.com/read/28405520/the-immune-molecular-landscape-of-the-b7-and-tnfr-immunoregulatory-ligand-receptor-families-in-head-and-neck-cancer-a-comprehensive-overview-and-the-immunotherapeutic-implications
#17
Yu-Pei Chen, Jian Zhang, Ya-Qin Wang, Na Liu, Qing-Mei He, Xiao-Jing Yang, Ying Sun, Jun Ma
The B7 family and tumor necrosis factor receptor (TNFR) superfamily play a vital role in the T-cell co-stimulatory and co-inhibitory pathways, regulating T-cell activation, tolerance, and exhaustion; therapeutic modulation of these pathways is translated into effective new cancer treatments. Better understanding of the immune molecular landscapes of the B7 and TNFR families would guide head and neck immuno-oncology clinical research. We performed comprehensive molecular profiling of 10 B7 and 6 TNFR family members in head and neck cancer...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28373465/evaluation-of-prognostic-immune-signatures-in-patients-with-breast-colorectal-and-pancreatic-cancer-receiving-chemotherapy
#18
Ursula M Vogl, Leopold Öhler, Masa Rasic, Josa M Frischer, Madhura Modak, Johannes Stöckl
BACKGROUND: CD97 is a member of the epidermal growth factor-seven transmembrane (EGF-TM7) receptor family and is dominantly expressed on immune cells and in a variety of malignant diseases. B7-H1 and B7-H3 are transmembrane proteins that are involved in suppression of the immune system. The aim of this study was to evaluate if these molecules are up-regulated in patients with cancer and change during chemotherapy. MATERIALS AND METHODS: We analyzed cluster of differentiation (CD) protein expression levels on tumor cell lines and in blood samples of 37 patients with solid tumors at baseline and during chemotherapy; we correlated the serum levels of CD proteins with survival outcome...
April 2017: Anticancer Research
https://www.readbyqxmd.com/read/28347512/characterization-of-immune-regulatory-molecules-b7-h4-and-pd-l1-in-low-and-high-grade-endometrial-tumors
#19
Amy Bregar, Amit Deshpande, Chris Grange, Tong Zi, Jennifer Stall, Heather Hirsch, Jason Reeves, Sriram Sathyanarayanan, Whitfield B Growdon, Bo R Rueda
BACKGROUND: The objective of this investigation was to characterize the expression landscape of immune regulatory molecules programmed death-ligand-1 (PD-L1, B7-H1) and B7-H4 in a cohort of endometrial tumors across the spectrum of grade and histology. MATERIALS AND METHODS: With institutional review board approval, 70 endometrial tumors from patients with known clinical outcomes were identified representing a spectrum of grade and histology. Immunohistochemistry (IHC) was performed for PD-L1 and B7-H4 and scored...
June 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28255028/gene-signature-driving-invasive-mucinous-adenocarcinoma-of-the-lung
#20
Minzhe Guo, Koichi Tomoshige, Michael Meister, Thomas Muley, Takuya Fukazawa, Tomoshi Tsuchiya, Rebekah Karns, Arne Warth, Iris M Fink-Baldauf, Takeshi Nagayasu, Yoshio Naomoto, Yan Xu, Marcus A Mall, Yutaka Maeda
Though invasive mucinous adenocarcinoma of the lung (IMA) is pathologically distinctive, the molecular mechanism driving IMA is not well understood, which hampers efforts to identify therapeutic targets. Here, by analyzing gene expression profiles of human and mouse IMA, we identified a Mucinous Lung Tumor Signature of 143 genes, which was unexpectedly enriched in mucin-producing gastrointestinal, pancreatic, and breast cancers. The signature genes included transcription factors FOXA3, SPDEF, HNF4A, mucins MUC5AC, MUC5B, MUC3, and an inhibitory immune checkpoint VTCN1/B7-H4 (but not PD-L1/B7-H1)...
April 2017: EMBO Molecular Medicine
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