keyword
MENU ▼
Read by QxMD icon Read
search

Protease activated receptor 2

keyword
https://www.readbyqxmd.com/read/28534511/stromal-derived-igf2-promotes-colon-cancer-progression-via-paracrine-and-autocrine-mechanisms
#1
C Unger, N Kramer, D Unterleuthner, M Scherzer, A Burian, A Rudisch, M Stadler, M Schlederer, D Lenhardt, A Riedl, S Walter, A Wernitznig, L Kenner, M Hengstschläger, J Schüler, W Sommergruber, H Dolznig
The insulin-like growth factor (IGF)2/IGF1 receptor (IGF1R) signaling axis has an important role in intestinal carcinogenesis and overexpression of IGF2 is an accepted risk factor for colorectal cancer (CRC) development. Genetic amplifications and loss of imprinting contribute to the upregulation of IGF2, but insufficiently explain the extent of IGF2 expression in a subset of patients. Here, we show that IGF2 was specifically induced in the tumor stroma of CRC and identified cancer-associated fibroblasts (CAFs) as the major source...
May 22, 2017: Oncogene
https://www.readbyqxmd.com/read/28532656/the-il-33-st2-axis-is-crucial-in-type-2-airway-responses-induced-by-the-staphylococcus-aureus-protease-spld
#2
Andrea R Teufelberger, Maria Nordengrün, Harald Braun, Tania Maes, Katrien De Grove, Gabriele Holtappels, Clara O'Brien, Sharen Provoost, Hamida Hammad, Amanda Gonçalves, Rudi Beyaert, Wim Declercq, Peter Vandenabeele, Dmitri V Krysko, Barbara M Bröker, Claus Bachert, Olga Krysko
BACKGROUND: Chronic airway inflammatory diseases such as chronic rhinosinusitis with nasal polyps and asthma showed increased nasal Staphylococcus aureus (S. aureus) colonization. Serine protease like protein D (SplD) and other closely related proteases secreted by S. aureus have recently been identified as inducers of allergic asthma in humans and mice but their mechanism of action is largely unknown. OBJECTIVE: We investigated the role of recombinant SplD in driving Th2-biased responses and IgE formation in a murine model of allergic asthma...
May 19, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28525362/fgf21-receptor-agonists-an-emerging-therapeutic-class-for-obesity-related-diseases
#3
Junichiro Sonoda, Mark Z Chen, Amos Baruch
Fibroblast growth factor 21 (FGF21) analogs and FGF21 receptor agonists (FGF21RAs) that mimic FGF21 ligand activity constitute the new "FGF21-class" of anti-obesity and anti-diabetic molecules that improve insulin sensitivity, ameliorate hepatosteatosis and promote weight loss. The metabolic actions of FGF21-class proteins in obese mice are attributed to stimulation of brown fat thermogenesis and increased secretion of adiponectin. The therapeutic utility of this class of molecules is being actively investigated in clinical trials for the treatment of type 2 diabetes and non-alcoholic steatohepatitis (NASH)...
May 19, 2017: Hormone Molecular Biology and Clinical Investigation
https://www.readbyqxmd.com/read/28522609/coagulation-factor-viia-mediated-protease-activated-receptor-2-activation-leads-to-%C3%AE-catenin-accumulation-via-the-akt-gsk3%C3%AE-pathway-and-contributes-to-breast-cancer-progression
#4
Abhishek Roy, Shabbir A Ansari, Kaushik Das, Ramesh Prasad, Anindita Bhattacharya, Suman Mallik, Asis Mukherjee, Prosenjit Sen
Cell migration and invasion are very characteristic features of cancer cells that promote metastasis, which is one of the most vulnerable causes of mortality among cancer patients. Emerging evidence has shown that coagulation factors can directly mediate cancer associated complications either by enhancing thrombus formation or by initiating various signaling events leading to metastatic cancer progression. It is well-established that apart from its distinct role in blood coagulation, coagulation factor FVIIa enhances aggressive behaviors of breast cancer cells, but the underlying signaling mechanisms still remain elusive...
May 18, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28521469/licochalcone-e-induces-caspase-dependent-death-of-human-pharyngeal-squamous-carcinoma-cells-through-the-extrinsic-and-intrinsic-apoptotic-signaling-pathways
#5
Sang-Joun Yu, In-A Cho, Kyeong-Rok Kang, Yi-Ra Jung, Seung Sik Cho, Goo Yoon, Ji-Su Oh, Jae-Seek You, Yo-Seob Seo, Gyeong-Je Lee, Sook-Young Lee, Do Kyung Kim, Chun Sung Kim, Su-Gwan Kim, Mi-Ae Jeong, Jae-Sung Kim
The aim of the present study was to investigate licochalcone-E (Lico-E)-induced apoptosis and the associated apoptotic signaling pathway in FaDu cells, a human pharyngeal squamous carcinoma cell line. Treatment with Lico-E exhibited significant cytotoxicity on FaDu cells in a concentration-dependent manner. The IC50 value of Lico-E in FaDu cells was ~50 µM. Treatment with Lico-E increased the number of dead FaDu cells. Furthermore, chromatin condensation, which is associated with apoptotic cell death, was observed in FaDu cells treated with Lico-E for 24 h...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28496990/mtorc1-regulates-mannose-6-phosphate-receptor-transport-and-t-cell-vulnerability-to-regulatory-t-cells-by-controlling-kinesin-kif13a
#6
Khawaja Ashfaque Ahmed, Jim Xiang
Mannose-6-phosphate receptor (M6PR) that facilitates cellular uptake of M6P-bearing proteins, including serine-protease granzyme-B (Gzm-B) has an important role in T-cell activation, migration and contraction. However, molecular mechanisms controlling M6PR expression in T cells remain poorly understood. Here, we show that M6PR expression on T cells is distinctively controlled by two common γ-chain cytokines interleukin-2 (IL-2) and IL-7, and the differential M6PR expression is not caused by an altered synthesis of M6PR protein, but is a result of distinct regulation of kinesin-3 motor-protein KIF13A that transport M6PR onto cell surfaces...
2017: Cell Discovery
https://www.readbyqxmd.com/read/28491140/tryptase-mast-cell-density-protease-activated-receptor-2-microvascular-density-and-classical-microvascular-density-evaluation-in-gastric-cancer-patients-undergoing-surgery-possible-translational-relevance
#7
Michele Ammendola, Rosario Sacco, Giuseppina Vescio, Valeria Zuccalà, Maria Luposella, Rosa Patruno, Nicola Zizzo, Claudia Gadaleta, Ilaria Marech, Roberta Ruggieri, Ibrahim Furkan Kocak, Taner Ozgurtas, Cosmo Damiano Gadaleta, Giuseppe Sammarco, Girolamo Ranieri
BACKGROUND: Mast cells (MCs) can stimulate angiogenesis, releasing several proangiogenic cytokines stored in their cytoplasm. In particular, MCs can release tryptase, a potent in vivo and in vitro proangiogenic factor via protease-activated receptor-2 (PAR-2) activation and mitogen-activated protein kinase (MAPK) phosphorylation. Nevertheless, no data are available concerning the relationship among tryptase MC density (TMCD), endothelial cells (ECs) positive to PAR-2 microvascular density (PAR-2-MVD) and classical MVD (C-MVD) in gastric cancer (GC) angiogenesis...
April 2017: Therapeutic Advances in Gastroenterology
https://www.readbyqxmd.com/read/28485540/proteinase-activated-receptor-2-modulates-ve-cadherin-expression-to-affect-human-vascular-endothelial-barrier-function
#8
Rui Zhang, Jianjun Ge
Published data indicate that the protease-activated receptor (PAR) 2 is involved in the pathogenesis of some cardiovascular diseases; the underlying mechanism is to be further investigated. Ve-cadherin is a critical molecule in maintaining the endothelial barrier integrity. This study aims to investigate the role of PAR2 activation in compromising the cardiac endothelial barrier function. In this study, human umbilical vein endothelial cells (Huvec cells) were cultured into monolayers using as an in vitro model of barrier function...
May 9, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28480714/nanoparticle-protein-interactions-therapeutic-approaches-and-supramolecular-chemistry
#9
Mathis Kopp, Sebastian Kollenda, Matthias Epple
Research on nanoparticles has evolved into a major topic in chemistry. Concerning biomedical research, nanoparticles have decisively entered the field, creating the area of nanomedicine where nanoparticles are used for drug delivery, imaging, and tumor targeting. Besides these functions, scientists have addressed the specific ways in which nanoparticles interact with biomolecules, with proteins being the most prominent example. Depending on their size, shape, charge, and surface functionality, specifically designed nanoparticles can interact with proteins in a defined way...
May 8, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28473813/asunaprevir-evokes-hepatocytes-innate-immunity-to-restrict-the-replication-of-hepatitis-c-and-dengue-virus
#10
Wei-Lun Tsai, Jin-Shiung Cheng, Chih-Wen Shu, Kwok-Hung Lai, Hoi-Hung Chan, Chun-Ching Wu, Jing-Mei Wu, Ping-I Hsu, Raymond T Chung, Tsung-Hsien Chang
Type I Interferon-mediated innate immunity against Flaviviridae, such as Hepatitis C virus (HCV) and Dengue virus (DENV), involves TLR3, RIG-I-like receptor (RLR) and JAK-STAT signal pathways. Asunaprevir is a newly developed HCV protease inhibitor for HCV treatment. Whether, asunaprevir activates innate immunity to restrict viral infection is unclear. Thus, this study investigates the effect of asunaprevir on innate immunity and its influence on HCV and DENV infection. Huh 7.5.1, Hep-G2 cells, JFH-1 infection model, and DENV-2 infection were used for the analysis...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28464560/matriptase-induces-metalloproteinase-dependent-aggrecanolysis-in-vitro-and-in-vivo-multiple-mechanisms-promote-cartilage-damage-in-osteoarthritis
#11
David J Wilkinson, Angela Habgood, Heather K Lamb, Paul Thompson, Alastair R Hawkins, Antoine Désilets, Richard Leduc, Torsten Steinmetzer, Maya Hammami, Melody S Lee, Charles S Craik, Sharon Watson, Hua Lin, Jennifer M Milner, Andrew D Rowan
Objectives To assess the ability of the type II transmembrane serine proteinase matriptase to promote aggrecan loss from cartilage of osteoarthritis (OA) patients, and whether matriptase inhibition could prevent aggrecan loss and cartilage damage in experimental OA. Methods Aggrecan release was assessed from human OA cartilage explants and human stem cell-derived cartilage discs, whilst cartilage conditioned media were used for western blotting. Gene expression was analysed by real-time PCR. Murine OA was induced by surgical destabilisation of the medial meniscus, and matriptase inhibitors delivered via osmotic mini-pump or intra-articular injection...
May 2, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28455446/enterovirus-71-suppresses-interferon-responses-by-blocking-jak-stat-signaling-through-inducing-karyopherin-%C3%AE-1-degradation
#12
Chunyang Wang, Menghuai Sun, Xinhui Yuan, Lianfu Ji, Yu Jin, Carol J Cardona, Zheng Xing
Enterovirus 71 (EV71) has emerged as one of the most important enteroviruses since the eradication of poliovirus, and causes severe neurological symptoms for which no effective antiviral drugs are available. Type I interferons (IFN-α/β) have been used clinically as antiviral therapy as the first line of defense against virus infections successfully for decades. However, treatment with Type I interferons has not been effective in patients with EV71 infection. In this study, we found that in cells pre-treated with IFN-β, EV71 infection could still lead to a cytopathic effect and the viral replication was not affected...
April 28, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28454094/proteolytic-cleavages-in-the-extracellular-domain-of-receptor-tyrosine-kinases-by-membrane-associated-serine-proteases
#13
Li-Mei Chen, Karl X Chai
The epithelial extracellular membrane-associated serine proteases matriptase, hepsin, and prostasin are proteolytic modifying enzymes of the extracellular domain (ECD) of the epidermal growth factor receptor (EGFR). Matriptase also cleaves the ECD of the vascular endothelial growth factor receptor 2 (VEGFR2) and the angiopoietin receptor Tie2. In this study we tested the hypothesis that these serine proteases may cleave the ECD of additional receptor tyrosine kinases (RTKs). We co-expressed the proteases in an epithelial cell line with Her2, Her3, Her4, insulin receptor (INSR), insulin-like growth factor I receptor (IGF-1R), the platelet-derived growth factor receptors (PDGFRs) α and β, or nerve growth factor receptor A (TrkA)...
April 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28448973/downregulations-of-cd36-and-calpain-1-inflammation-and-atherosclerosis-by-simvastatin-in-apolipoprotein-e-knockout-mice
#14
Meihui Yin, Qianqian Liu, Lan Yu, Yueyan Yang, Meili Lu, Hongxin Wang, Duosheng Luo, Xianglu Rong, Futian Tang, Jiao Guo
BACKGROUND: In the previous in vitro study, we found that simvastatin decreased the protein expression of CD36, the scavenger receptor, and calpain-1, the Ca2+-sensitive cysteine protease, in oxidized low-density lipoprotein (oxLDL)-treated macrophages. In this in vivo study, we investigated whether simvastatin downregulates the expression of CD36 and calpain-1 and inhibits the inflammation and atherosclerosis in apolipoprotein E knockout (ApoE KO) mice. METHODS: Twenty male 6-week-old ApoE KO mice were divided into 2 groups: the ApoE KO group and the ApoE KO + simvastatin (ApoE KO + Sim) group...
April 28, 2017: Journal of Vascular Research
https://www.readbyqxmd.com/read/28447716/par1%C3%A2-mediated-c%C3%A2-jun-activation-promotes-heat-stress%C3%A2-induced-early-stage-apoptosis-of-human-umbilical-vein-endothelial-cells
#15
Shuang Zhang, Yanan Liu, Zhenglian Wang, Jingxian Liu, Zhengtao Gu, Qiulin Xu, Lei Su
Our previous study indicated that when human umbilical vein endothelial cells (HUVECs), which are involved in endothelial barrier function, are heat stressed, levels of protease‑activated receptor 1 (PAR1) are increased significantly. In the present study, it was demonstrated that PAR1 serves a vital role in heat stress‑induced HUVEC apoptosis. When the PAR1 inhibitor, SCH79797 (SCH), or a small interfering RNA (siRNA) targeting PAR1 were used to inhibit PAR1 signaling, a marked decrease in cell apoptosis, caspase‑3 activity and the expression of the pro‑apoptotic protein B‑cell lymphoma 2 (Bcl‑2) associated X (Bax), as well as increased expression of the anti‑apoptotic Bcl‑2 family member, myeloid cell leukemia 1 (Mcl‑1), were observed...
May 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28445455/structural-insight-into-allosteric-modulation-of-protease-activated-receptor-2
#16
Robert K Y Cheng, Cédric Fiez-Vandal, Oliver Schlenker, Karl Edman, Birte Aggeler, Dean G Brown, Giles A Brown, Robert M Cooke, Christoph E Dumelin, Andrew S Doré, Stefan Geschwindner, Christoph Grebner, Nils-Olov Hermansson, Ali Jazayeri, Patrik Johansson, Louis Leong, Rudi Prihandoko, Mathieu Rappas, Holly Soutter, Arjan Snijder, Linda Sundström, Benjamin Tehan, Peter Thornton, Dawn Troast, Giselle Wiggin, Andrei Zhukov, Fiona H Marshall, Niek Dekker
Protease-activated receptors (PARs) are a family of G-protein-coupled receptors (GPCRs) that are irreversibly activated by proteolytic cleavage of the N terminus, which unmasks a tethered peptide ligand that binds and activates the transmembrane receptor domain, eliciting a cellular cascade in response to inflammatory signals and other stimuli. PARs are implicated in a wide range of diseases, such as cancer and inflammation. PARs have been the subject of major pharmaceutical research efforts but the discovery of small-molecule antagonists that effectively bind them has proved challenging...
May 4, 2017: Nature
https://www.readbyqxmd.com/read/28443061/a-linear-temporal-increase-in-thrombin-activity-and-loss-of-its-receptor-in-mouse-brain-following-ischemic-stroke
#17
Doron Bushi, Efrat Shavit Stein, Valery Golderman, Ekaterina Feingold, Orna Gera, Joab Chapman, David Tanne
BACKGROUND: Brain thrombin activity is increased following acute ischemic stroke and may play a pathogenic role through the protease-activated receptor 1 (PAR1). In order to better assess these factors, we obtained a novel detailed temporal and spatial profile of thrombin activity in a mouse model of permanent middle cerebral artery occlusion (pMCAo). METHODS: Thrombin activity was measured by fluorescence spectroscopy on coronal slices taken from the ipsilateral and contralateral hemispheres 2, 5, and 24 h following pMCAo (n = 5, 6, 5 mice, respectively)...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28441717/dexmedetomidine-relieves-formaldehyde-induced-pain-in-rats-through-both-%C3%AE-2-adrenoceptor-and-imidazoline-receptor
#18
Hong Zhang, Xiang Yan, De-Gui Wang, Yu-Fang Leng, Zhan-Hai Wan, Yong-Qiang Liu, Yan Zhang
Dexmedetomidine (DEX) is a highly selective α2 adrenergic receptor agonist. In this study, we investigated the analgesic effect and the underlying mechanisms of DEX on inflammatory visceral pain in rats. Twenty-five male Sprague Dawley (SD) rats were randomly divided into 5 groups, including control, sham, low dose DEX, medium dose DEX and high dose DEX group. Pain was induced with 10% formalin and scored every 15min till 2 h-post the induction. Hematoxylin-eosin (HE) staining was used to evaluate the toxicity of DEX on spinal cord neurons...
June 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28438620/expression-of-protease-activated-receptor-2-par-2-is-related-to-advanced-clinical-stage-and-adverse-prognosis-in-ovarian-clear-cell-carcinoma
#19
Murasaki Aman, Yoshihiro Ohishi, Hiroko Imamura, Tomoko Shinozaki, Nobuko Yasutake, Kiyoko Kato, Yoshinao Oda
Recent studies demonstrated that Protease-activated receptor-2 (PAR-2) correlates with tumor progression in various tissues. On the other hand, oxidative stress arising from endometriosis has been considered a cause of carcinogenesis in ovarian clear cell carcinoma (OCCC). We previously demonstrated that oxidative stress upregulates PAR-2 expression, and we conducted the present study to investigate the PAR-2 expression and its relation to clinicopathological factors and oxidative stress in OCCC. We performed an immunohistochemical evaluation in 95 cases of OCCC...
April 21, 2017: Human Pathology
https://www.readbyqxmd.com/read/28432785/phosphorylation-of-irhom2-at-the-plasma-membrane-controls-mammalian-tace-dependent-inflammatory-and-growth-factor-signalling
#20
Adam Graham Grieve, Hongmei Xu, Ulrike Künzel, Paul Bambrough, Boris Sieber, Matthew Freeman
Proteolytic cleavage and release from the cell surface of membrane-tethered ligands is an important mechanism of regulating intercellular signalling. TACE is a major shedding protease, responsible for the liberation of the inflammatory cytokine TNFα and ligands of the epidermal growth factor receptor. iRhoms, catalytically inactive members of the rhomboid-like superfamily, have been shown to control the ER-to-Golgi transport and maturation of TACE. Here, we reveal that iRhom2 remains associated with TACE throughout the secretory pathway, and is stabilised at the cell surface by this interaction...
April 22, 2017: ELife
keyword
keyword
77545
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"