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Protein kinase G

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https://www.readbyqxmd.com/read/28723961/dysfunctional-gpr40-ffar1-signaling-exacerbates-pain-behavior-in-mice
#1
Kazuo Nakamoto, Fuka Aizawa, Kei Miyagi, Takuya Yamashita, Mitsumasa Mankura, Yutaka Koyama, Fumiyo Kasuya, Akira Hirasawa, Takashi Kurihara, Atsuro Miyata, Shogo Tokuyama
We previously showed that activation of G protein-coupled receptor 40/free fatty acid receptor 1 (GPR40/FFAR1) signaling modulates descending inhibition of pain. In this study, we investigated the involvement of fatty acid-GPR40/FFAR1 signaling in the transition from acute to chronic pain. We used GPR40/FFAR1-knockout (GPR40KO) mice and wild-type (WT) mice. A plantar incision was performed, and mechanical allodynia and thermal hyperalgesia were evaluated with a von Frey filament test and plantar test, respectively...
2017: PloS One
https://www.readbyqxmd.com/read/28722236/the-membrane-type-estrogen-receptor-g-protein-coupled-estrogen-receptor-suppresses-lipopolysaccharide-induced-interleukin-6-via-inhibition-of-nuclear-factor-kappa-b-pathway-in-murine-macrophage-cells
#2
Mariko Okamoto, Takuto Suzuki, Yoichi Mizukami, Teruo Ikeda
The female sex hormone estrogen exerts anti-inflammatory effects. The G-protein-coupled estrogen receptor (GPER) has been recently identified as a novel membrane-type estrogen receptor that can mediate non-genomic estrogenic effects on many cell types. We previously demonstrated that GPER inhibits tumor necrosis factor alpha-induced expression of interleukin 6 (IL-6) through repression of nuclear factor-kappa B (NF-κB) promoter activity using human breast cancer cells. Although several reports have indicated that GPER suppresses Toll-like receptor-induced inflammatory cytokine expression in macrophages, the molecular mechanisms of the inhibition of cytokine production via GPER remain poorly understood...
July 18, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/28720517/transient-receptor-potential-trpm3-channels-pharmacology-signaling-and-biological-functions
#3
REVIEW
Gerald Thiel, Sandra Rubil, Andrea Lesch, Lisbeth A Guethlein, Oliver G Rössler
The transient receptor potential melastatin-3 (TRPM3) channel belongs to the family of transient receptor potential (TRP) cation channels that are expressed in a variety of tissues and cell types, including dorsal root ganglia, cardiomyocytes and pancreatic beta-cells. Although its natural ligands are currently unknown, TRPM3 channels can be activated by the neurosteroid pregnenolone sulfate, the synthetic ligand CIM0216, and by noxious heat. TRPM3 channels are regulated by phosphoinositides, and perhaps by calmodulin...
July 15, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28719888/inhibition-of-single-routes-of-intracellular-signaling-is-not-sufficient-to-neutralize-the-biphasic-disturbance-of-a-retinal-endothelial-cell-barrier-induced-by-vegf-a165
#4
Heidrun L Deissler, Gerhard K Lang, Gabriele E Lang
BACKGROUND/AIMS: Hallmark of diabetic macular edema is the enhanced permeability of retinal endothelial cells (REC) induced by vascular endothelial growth factor (VEGF-A165), which acts through activating specific receptors. To improve the predictability of inhibitors' potentials to block harmful effects of VEGF-A165, we investigated if its signaling pathways triggered in REC are redundant. METHODS: Immortalized bovine REC monolayers were treated with inhibitors specific for various protein kinases in combination with VEGF-A165...
July 18, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28719611/rna-sequencing-to-determine-the-contribution-of-kinase-receptor-transactivation-to-g-protein-coupled-receptor-signalling-in-vascular-smooth-muscle-cells
#5
Danielle Kamato, Venkata Vijayanand Bhaskarala, Nitin Mantri, Tae Gyu Oh, Dora Ling, Reearna Janke, Wenhua Zheng, Peter J Little, Narin Osman
G protein coupled receptor (GPCR) signalling covers three major mechanisms. GPCR agonist engagement allows for the G proteins to bind to the receptor leading to a classical downstream signalling cascade. The second mechanism is via the utilization of the β-arrestin signalling molecule and thirdly via transactivation dependent signalling. GPCRs can transactivate protein tyrosine kinase receptors (PTKR) to activate respective downstream signalling intermediates. In the past decade GPCR transactivation dependent signalling was expanded to show transactivation of serine/threonine kinase receptors (S/TKR)...
2017: PloS One
https://www.readbyqxmd.com/read/28719054/evolutionary-cell-biology-of-proteins-from-protists-to-humans-and-plants
#6
REVIEW
Helmut Plattner
During evolution, the cell as a fine-tuned machine had to undergo permanent adjustments to match changes in its environment, while "closed for repair work" was not possible. Evolution from protists (protozoa and unicellular algae) to multicellular organisms may have occurred in basically two lineages, Unikonta and Bikonta, culminating in mammals and angiosperms (flowering plants), respectively. Unicellular models for unikont evolution are myxamoebae (Dictyostelium) and increasingly also choanoflagellates, whereas, for bikonts, ciliates are preferred models...
July 18, 2017: Journal of Eukaryotic Microbiology
https://www.readbyqxmd.com/read/28718798/co-expression-network-and-pathway-analyses-reveal-important-modules-of-mirnas-regulating-milk-yield-and-component-traits
#7
Duy N Do, Pier-Luc Dudemaine, Ran Li, Eveline M Ibeagha-Awemu
Co-expression network analyses provide insights into the molecular interactions underlying complex traits and diseases. In this study, co-expression network analysis was performed to detect expression patterns (modules or clusters) of microRNAs (miRNAs) during lactation, and to identify miRNA regulatory mechanisms for milk yield and component traits (fat, protein, somatic cell count (SCC), lactose, and milk urea nitrogen (MUN)) via miRNA target gene enrichment analysis. miRNA expression (713 miRNAs), and milk yield and components (Fat%, Protein%, lactose, SCC, MUN) data of nine cows at each of six different time points (day 30 (D30), D70, D130, D170, D230 and D290) of an entire lactation curve were used...
July 18, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28717665/identification-of-an-alu-element-mediated-deletion-in-the-promoter-region-of-gne-in-siblings-with-gne-myopathy
#8
Jennifer Garland, Joshi Stephen, Bradley Class, Angela Gruber, Carla Ciccone, Aaron Poliak, Christina P Hayes, Vandana Singhal, Christina Slota, John Perreault, Ralitza Gavrilova, Joseph A Shrader, Prashant Chittiboina, Galen Joe, John Heiss, William A Gahl, Marjan Huizing, Nuria Carrillo, May Christine V Malicdan
BACKGROUND: GNE myopathy is a rare genetic disease characterized by progressive muscle atrophy and weakness. It is caused by biallelic mutations in the GNE gene that encodes for the bifunctional enzyme, uridine diphosphate (UDP)-N-acetylglucosamine (GlcNAc) 2-epimerase/N-acetylmannosamine (ManNAc) kinase. Typical characteristics of GNE myopathy include progressive myopathy, first involving anterior tibialis muscle and sparing the quadriceps, and rimmed vacuoles on muscle biopsy. Identifying biallelic mutations by sequencing of the GNE gene confirms the diagnosis of GNE myopathy...
July 2017: Molecular Genetics & Genomic Medicine
https://www.readbyqxmd.com/read/28717253/prostacyclin-reverses-platelet-stress-fibre-formation-causing-platelet-aggregate-instability
#9
M Z Yusuf, Z Raslan, L Atkinson, A Aburima, S G Thomas, K M Naseem, S D J Calaminus
Prostacyclin (PGI2) modulates platelet activation to regulate haemostasis. Evidence has emerged to suggest that thrombi are dynamic structures with distinct areas of differing platelet activation. It was hypothesised that PGI2 could reverse platelet spreading by actin cytoskeletal modulation, leading to reduced capability of platelet aggregates to withstand a high shear environment. Our data demonstrates that post-flow of PGI2 over activated and spread platelets on fibrinogen, identified a significant reduction in platelet surface area under high shear...
July 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28717011/dysregulation-of-bcl-2-family-proteins-by-leukaemia-fusion-genes
#10
Lauren M Brown, Diane T Hanna, Seong L Khaw, Paul G Ekert
The genomic lesions that characterise acute lymphoblastic leukaemia in childhood include recurrent translocations that result in the expression of fusion proteins. These translocations typically involve the rearrangement of genes encoding tyrosine kinases, including receptor tyrosine kinase, cytokine receptors and transcription factors. These confer phenotypic changes that are the hallmarks of malignant transformation, including unrestricted proliferation and a relative resistance to apoptosis. In this review, we explore the molecular mechanisms that link these fusions to the control of cell death...
July 17, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28716990/proof-of-principle-for-a-novel-class-of-antihypertensives-that-target-the-oxidative-activation-of-protein-kinase-g-i%C3%AE
#11
Joseph R Burgoyne, Oleksandra Prysyazhna, Daniel A Richards, Philip Eaton
Arterial hypertension continues to be a major health burden. Development of new antihypertensive drugs that engage vasodilatory mechanisms not harnessed by available therapies offer therapeutic potential. Oxidants induce an interprotein disulfide in protein kinase G Iα (PKG Iα) at C42, which is associated with its targeting and activation, resulting in vasodilation and blood pressure lowering. Consequently, we developed an assay and screened for electrophilic drugs that activate PKG Iα by selectively targeting C42, as such compounds have potential as novel antihypertensives with a mechanism of action that differs from current therapies...
July 17, 2017: Hypertension
https://www.readbyqxmd.com/read/28716986/development-of-protein-kinase-g-i%C3%AE-dimerizing-antihypertensive-drugs-are-we-standing-at-the-shore-of-the-rubicon
#12
EDITORIAL
Paula K Bautista-Niño, Anton J M Roks, A H Jan Danser
No abstract text is available yet for this article.
July 17, 2017: Hypertension
https://www.readbyqxmd.com/read/28716183/the-c-jun-n-terminal-kinase-pathway-of-a-vector-insect-is-activated-by-virus-capsid-protein-and-promotes-viral-replication
#13
Wei Wang, Wan Zhao, Jing Li, Lan Luo, Le Kang, Feng Cui
No evidence has shown whether insect-borne viruses manipulate the c-Jun N-terminal kinase (JNK) signaling pathway of vector insects. Using a system comprising the plant virus Rice stripe virus (RSV) and its vector insect, the small brown planthopper, we have studied the response of the vector insect's JNK pathway to plant virus infection. We found that RSV increased the level of Tumor Necrosis Factor-α and decreased the level of G protein Pathway Suppressor 2 (GPS2) in the insect vector. The virus capsid protein competitively bound GPS2 to release it from inhibiting the JNK activation machinery...
July 18, 2017: ELife
https://www.readbyqxmd.com/read/28714979/translation-is-actively-regulated-during-the-differentiation-of-cd8-effector-t-cells
#14
Koichi Araki, Masahiro Morita, Annelise G Bederman, Bogumila T Konieczny, Haydn T Kissick, Nahum Sonenberg, Rafi Ahmed
Translation is a critical process in protein synthesis, but translational regulation in antigen-specific T cells in vivo has not been well defined. Here we have characterized the translatome of virus-specific CD8(+) effector T cells (Teff cells) during acute infection of mice with lymphocytic choriomeningitis virus (LCMV). Antigen-specific T cells exerted dynamic translational control of gene expression that correlated with cell proliferation and stimulation via the T cell antigen receptor (TCR). The translation of mRNAs that encode translation machinery, including ribosomal proteins, was upregulated during the T cell clonal-expansion phase, followed by inhibition of the translation of those transcripts when the CD8(+) Teff cells stopped dividing just before the contraction phase...
July 17, 2017: Nature Immunology
https://www.readbyqxmd.com/read/28714916/targeting-of-tumor-neovasculature-with-grb-vegf121-a-novel-cytotoxic-fusion-protein
#15
REVIEW
Khalid A Mohamedali, Michael G Rosenblum
Angiogenesis is a critical process in numerous diseases, and intervention in neovascularization has therapeutic value in several disease settings, including ocular diseases, arthritis, and in tumor progression and metastatic spread. Various vascular targeting agents have been developed, including those that inhibit growth factor receptor tyrosine kinases, blocking antibodies that interfere with receptor signal transduction, and strategies that trap growth factor ligands. Limited anti-tumor efficacy studies have suggested that the targeted delivery of the human pro-apoptotic molecule Granzyme B to tumor cells has significant potential for cancer treatment...
July 17, 2017: Biomedicines
https://www.readbyqxmd.com/read/28712573/ve-cadherin-phosphorylation-regulates-endothelial-fluid-shear-stress-responses-through-the-polarity-protein-lgn
#16
Daniel E Conway, Brian G Coon, Madhusuthan Budatha, Paul T Arsenovic, Fabrizio Orsenigo, Florian Wessel, Jiasheng Zhang, Zhenwu Zhuang, Elisabetta Dejana, Dietmar Vestweber, Martin A Schwartz
Fluid shear stress due to blood flow on the vascular endothelium regulates blood vessel development, remodeling, physiology, and pathology [1, 2]. A complex consisting of PECAM-1, VE-cadherin, and vascular endothelial growth factor receptors (VEGFRs) that resides at endothelial cell-cell junctions transduces signals important for flow-dependent vasodilation, blood vessel remodeling, and atherosclerosis. PECAM-1 transduces forces to activate src family kinases (SFKs), which phosphorylate and transactivate VEGFRs [3-5]...
July 10, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28711719/g-protein-coupled-receptor-kinases-past-present-and-future
#17
REVIEW
Konstantin E Komolov, Jeffrey L Benovic
This review is provided in recognition of the extensive contributions of Dr. Robert J. Lefkowitz to the G protein-coupled receptor (GPCR) field and to celebrate his 75th birthday. Since one of the authors trained with Bob in the 80s, we provide a history of work done in the Lefkowitz lab during the 80s that focused on dissecting the mechanisms that regulate GPCR signaling, with a particular emphasis on the GPCR kinases (GRKs). In addition, we highlight structure/function characteristics of GRK interaction with GPCRs as well as a review of two recent reports that provide a molecular model for GRK-GPCR interaction...
July 12, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28711716/impact-of-paroxetine-on-proximal-%C3%AE-adrenergic-receptor-signaling
#18
Shuchi Guo, Rhonda L Carter, Laurel A Grisanti, Walter J Koch, Douglas G Tilley
β-adrenergic receptors (βAR) regulate numerous functions throughout the body, however G protein-coupled receptor kinase (GRK)-dependent desensitization of βAR has long been recognized as a maladaptive process in the progression of various disease states. Thus, the development of small molecule inhibitors of GRKs for the study of these processes and as potential therapeutics has been at the forefront of recent research efforts. Via structural and biochemical analyses, the selective serotonin reuptake inhibitor (SSRI) paroxetine was identified as a GRK2 inhibitor that enhances βAR-dependent cardiomyocyte and cardiac contractility and reverses cardiac dysfunction and myocardial βAR expression in mouse models of heart failure...
July 12, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28710561/genetic-architecture-of-wild-soybean-glycine-soja-response-to-soybean-cyst-nematode-heterodera-glycines
#19
Hengyou Zhang, Qijian Song, Joshua D Griffin, Bao-Hua Song
The soybean cyst nematode (SCN) is one of the most destructive pathogens of soybean plants worldwide. Host-plant resistance is an environmentally friendly method to mitigate SCN damage. To date, the resistant soybean cultivars harbor limited genetic variation, and some are losing resistance. Thus, a better understanding of the genetic mechanisms of the SCN resistance, as well as developing diverse resistant soybean cultivars, is urgently needed. In this study, a genome-wide association study (GWAS) was conducted using 1032 wild soybean (Glycine soja) accessions with over 42,000 single-nucleotide polymorphisms (SNPs) to understand the genetic architecture of G...
July 14, 2017: Molecular Genetics and Genomics: MGG
https://www.readbyqxmd.com/read/28708087/resveratrol-induced-amp-activated-protein-kinase-activation-is-cell-type-dependent-lessons-from-basic-research-for-clinical-application
#20
Fan Lan, Karen A Weikel, Jose M Cacicedo, Yasuo Ido
Despite the promising effects of resveratrol, its efficacy in the clinic remains controversial. We were the first group to report that the SIRT1 activator resveratrol activates AMP-activated protein kinase (AMPK) (Diabetes 2005; 54: A383), and we think that the variability of this cascade may be responsible for the inconsistency of resveratrol's effects. Our current studies suggest that the effect of SIRT1 activators such as resveratrol may not be solely through activation of SIRT1, but also through an integrated effect of SIRT1-liver kinase B1 (LKB1)-AMPK...
July 14, 2017: Nutrients
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