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Signal transduction

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https://www.readbyqxmd.com/read/28212382/de-novo-assembly-of-the-sea-trout-salmo-trutta-m-trutta-skin-transcriptome-to-identify-putative-genes-involved-in-the-immune-response-and-epidermal-mucus-secretion
#1
Magdalena Malachowicz, Roman Wenne, Artur Burzynski
In fish, the skin is a multifunctional organ and the first barrier against pathogens. Salmonids differ in their susceptibility to microorganisms due to varied skin morphology and gene expression patterns. The brown trout is a salmonid species with important commercial and ecological value in Europe. However, there is a lack of knowledge regarding the genes involved in the immune response and mucus secretion in the skin of this fish. Thus, we characterized the skin transcriptome of anadromous brown trout using next-generation sequencing (NGS)...
2017: PloS One
https://www.readbyqxmd.com/read/28211799/increased-expression-of-long-non-coding-rna-glidr-in-prostate-cancer
#2
Yingyi Zhang, Zhe Kong, Yalong Zhang, Wenhua Huang, Hai Wu, Xuechao Wan, Yao Li
Prostate cancer (PCa) was one of the most common cancers in males in China. Long non-coding RNAs (lncRNA), a class of non-coding RNAs with more than 200 nucleotides, played key roles in the progression of prostate cancer. GLIDR, a novel long intergenic ncRNA, was found to be upregulated in tumors compared to normal tissues by using publically databases. In the clinical validation cohort, our results showed GLIDR was significantly up-regulated in prostate cancer samples and cell lines. To explore the potential functions of the GLIDR, we constructed gene co-expression networks and applied GO analysis...
February 3, 2017: Cancer Biomarkers: Section A of Disease Markers
https://www.readbyqxmd.com/read/28210796/optogenetic-switches-for-light-controlled-gene-expression-in-yeast
#3
REVIEW
Francisco Salinas, Vicente Rojas, Verónica Delgado, Eduardo Agosin, Luis F Larrondo
Light is increasingly recognized as an efficient means of controlling diverse biological processes with high spatiotemporal resolution. Optogenetic switches are molecular devices for regulating light-controlled gene expression, protein localization, signal transduction and protein-protein interactions. Such molecular components have been mainly developed through the use of photoreceptors, which upon light stimulation undergo conformational changes passing to an active state. The current repertoires of optogenetic switches include red, blue and UV-B light photoreceptors and have been implemented in a broad spectrum of biological platforms...
February 16, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28210712/identification-of-an-epidermal-keratinocyte-ampa-glutamate-receptor-involved-in-dermatopathies-associated-with-sensory-abnormalities
#4
David Cabañero, Takeshi Irie, Marta Celorrio, Christopher Trousdale, David M Owens, David Virley, Phillip J Albrecht, Michael J Caterina, Frank L Rice, Jose A Morón
INTRODUCTION: Epidermal keratinocytes are increasingly recognized as active participants in the sensory transduction of itch and pain, processes known to involve primary afferent glutamatergic neurons. However the role of keratinocyte glutamate signaling in sensory functioning is not fully understood. Here, we present the observation of α-amino-3-hydroxy-5-methyl-4-isoxazole-propionic acid type glutamate receptors (AMPAR) in epidermal keratinocytes. METHODS: Immunohistochemical and in situ hybridization analyses were conducted to assess the expression of AMPAR subunits in epidermal keratinocytes in mouse and human skin samples, and in organotypic cultures of human keratinocytes...
September 2016: Pain Reports (Baltimore, Md.)
https://www.readbyqxmd.com/read/28210221/pharmacogenomic-characterization-and-isobologram-analysis-of-the-combination-of-ascorbic-acid-and-curcumin-two-main-metabolites-of-curcuma-longa-in-cancer-cells
#5
Edna Ooko, Onat Kadioglu, Henry J Greten, Thomas Efferth
Curcuma longa has long been used in China and India as anti-inflammatory agent to treat a wide variety of conditions and also as a spice for varied curry preparations. The chemoprofile of the Curcuma species exhibits the presence of varied phytochemicals with curcumin being present in all three species but AA only being shown in C. longa. This study explored the effect of a curcumin/AA combination on human cancer cell lines. The curcumin/AA combination was assessed by isobologram analysis using the Loewe additivity drug interaction model...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28209562/vinexin-%C3%AE-ablation-inhibits-atherosclerosis-in-apolipoprotein-e-deficient-mice-by-inactivating-the-akt-nuclear-factor-%C3%AE%C2%BAb-inflammatory-axis
#6
Hongjing Guan, Wen-Lin Cheng, Junhong Guo, Meng-Lin Chao, Yan Zhang, Jun Gong, Xue-Yong Zhu, Zhi-Gang She, Zan Huang, Hongliang Li
BACKGROUND: Vinexin β is a novel adaptor protein that regulates cellular adhesion, cytoskeletal reorganization, signal transduction, and transcription; however, the exact role that vinexin β plays in atherosclerosis remains unknown. METHODS AND RESULTS: Immunoblot analysis showed that vinexin β expression is upregulated in the atherosclerotic lesions of both patients with coronary heart disease and hyperlipemic apolipoprotein E-deficient mice and is primarily localized in macrophages indicated by immunofluorescence staining...
February 16, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28208683/plasma-gelsolin-induced-glomerular-fibrosis-via-the-tgf-%C3%AE-1-smads-signal-transduction-pathway-in-iga-nephropathy
#7
Lei Zhang, Changsong Han, Fei Ye, Yan He, Yinji Jin, Tianzhen Wang, Yiqi Wu, Yang Jiang, Fengmin Zhang, Xiaoming Jin
Glomerular fibrosis has been shown to be closely related to the progression and prognosis of IgA nephropathy (IgAN). However, mechanism underlying IgAN glomerular fibrosis remains unclear. Recently, our study showed that plasma gelsolin (pGSN) was decreased in the serum of an IgAN mouse model and that pGSN deposition was found in the glomeruli. Another cytokine, TGF-β1, which is closely related to glomerular fibrosis, was also found to be highly expressed in the glomeruli. In the present study, we report that pGSN induces glomerular fibrosis through the TGF-β1/Smads signal transduction pathway...
February 12, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28208600/invariant-chain-complexes-and-clusters-as-platforms-for-mif-signaling
#8
REVIEW
Robert Lindner
Invariant chain (Ii/CD74) has been identified as a surface receptor for migration inhibitory factor (MIF). Most cells that express Ii also synthesize major histocompatibility complex class II (MHC II) molecules, which depend on Ii as a chaperone and a targeting factor. The assembly of nonameric complexes consisting of one Ii trimer and three MHC II molecules (each of which is a heterodimer) has been regarded as a prerequisite for efficient delivery to the cell surface. Due to rapid endocytosis, however, only low levels of Ii-MHC II complexes are displayed on the cell surface of professional antigen presenting cells and very little free Ii trimers...
February 10, 2017: Cells
https://www.readbyqxmd.com/read/28208380/inferring-hidden-states-in-langevin-dynamics-on-large-networks-average-case-performance
#9
B Bravi, M Opper, P Sollich
We present average performance results for dynamical inference problems in large networks, where a set of nodes is hidden while the time trajectories of the others are observed. Examples of this scenario can occur in signal transduction and gene regulation networks. We focus on the linear stochastic dynamics of continuous variables interacting via random Gaussian couplings of generic symmetry. We analyze the inference error, given by the variance of the posterior distribution over hidden paths, in the thermodynamic limit and as a function of the system parameters and the ratio α between the number of hidden and observed nodes...
January 2017: Physical Review. E
https://www.readbyqxmd.com/read/28208005/expression-of-microrna-in-host-cells-infected-with-helicobacter-pylori
#10
Jun-Won Chung, Seok Hoo Jeong, Sun Mi Lee, Jhang Ho Pak, Gin Hyug Lee, Jin-Yong Jeong, Jin-Ho Kim
Background/Aims: MicroRNAs (miRNAs) regulate gene expression. We assess miRNA regulation by Helicobacter pylori infection and elucidate their role in H. pylori-infected gastric epithelial cells. Methods: The relationship between miRNA expression and DNA methylation was examined. Cells were treated with the nuclear factor-kappaB (NF-κB) inhibitor Bay 11-7082 to determine the relationship between miRNA expression and NF-κB signal transduction. Results: In the negative control cells infected with H...
February 17, 2017: Gut and Liver
https://www.readbyqxmd.com/read/28207847/microarray-analysis-of-arabidopsis-wrky33-mutants-in-response-to-the-necrotrophic-fungus-botrytis-cinerea
#11
Arjun Sham, Khaled Moustafa, Shamma Al-Shamisi, Sofyan Alyan, Rabah Iratni, Synan AbuQamar
The WRKY33 transcription factor was reported for resistance to the necrotrophic fungus Botrytis cinerea. Using microarray-based analysis, we compared Arabidopsis WRKY33 overexpressing lines and wrky33 mutant that showed altered susceptibility to B. cinerea with their corresponding wild-type plants. In the wild-type, about 1660 genes (7% of the transcriptome) were induced and 1054 genes (5% of the transcriptome) were repressed at least twofold at early stages of inoculation with B. cinerea, confirming previous data of the contribution of these genes in B...
2017: PloS One
https://www.readbyqxmd.com/read/28207822/identification-classification-and-transcription-profiles-of-the-b-type-response-regulator-family-in-pear
#12
Junbei Ni, Songling Bai, Ling Gao, Minjie Qian, Linbing Zhong, Yuanwen Teng
Type-B response regulators (B-RRs) are transcription factors that function in the final step of two-component signaling systems. In model plants, B-RRs have been shown to play important roles in cytokinin signal transduction. However, the functions of B-RRs in pear have not been well studied. In this report, we conducted a genome-wide analysis and identified 11 putative genes encoding B-PpRR proteins based on the published genome sequence of Pyrus bretschneideri. A phylogenetic tree of the B-PpRR family was constructed, and the motif distribution, chromosome localization, and gene structure of B-PpRR family genes were determined...
2017: PloS One
https://www.readbyqxmd.com/read/28205584/a-postnatal-role-for-embryonic-myosin-revealed-by-myh3-mutations-that-alter-tgf%C3%AE-signaling-and-cause-autosomal-dominant-spondylocarpotarsal-synostosis
#13
Jennifer Zieba, Wenjuan Zhang, Jessica X Chong, Kimberly N Forlenza, Jorge H Martin, Kelly Heard, Dorothy K Grange, Merlin G Butler, Tjitske Kleefstra, Ralph S Lachman, Deborah Nickerson, Michael Regnier, Daniel H Cohn, Michael Bamshad, Deborah Krakow
Spondylocarpotarsal synostosis (SCT) is a skeletal disorder characterized by progressive vertebral, carpal and tarsal fusions, and mild short stature. The majority of affected individuals have an autosomal recessive form of SCT and are homozygous or compound heterozygous for nonsense mutations in the gene that encodes the cytoskeletal protein filamin B (FLNB), but a subset do not have FLNB mutations. Exome sequence analysis of three SCT patients negative for FLNB mutations identified an autosomal dominant form of the disease due to heterozygosity for missense or nonsense mutations in MYH3, which encodes embryonic myosin...
February 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28204874/effects-of-calcium-at-toxic-concentrations-of-cadmium-in-plants
#14
REVIEW
Danlian Huang, Xiaomin Gong, Yunguo Liu, Guangming Zeng, Cui Lai, Hassan Bashir, Lu Zhou, Dafei Wang, Piao Xu, Min Cheng, Jia Wan
This review provides new insight that calcium plays important roles in plant growth, heavy metal accumulation and translocation, photosynthesis, oxidative damage and signal transduction under cadmium stress. Increasing heavy metal pollution problems have raised word-wide concerns. Cadmium (Cd), being a highly toxic metal, poses potential risks both to ecosystems and human health. Compared with conventional technologies, phytoremediation, being cost-efficient, highly stable and environment-friendly, is believed to be a promising green technology for Cd decontamination...
February 15, 2017: Planta
https://www.readbyqxmd.com/read/28203298/prolyl-isomerase-pin1-and-neurotrophins-a-loop-that-may-determine-the-fate-of-cells-in-cancer-and-neurodegeneration
#15
REVIEW
Francesco Angelucci, Jakub Hort
Increased survival, differentiation, and apoptotic death are common mechanisms relevant for both cancer and neurodegenerative diseases. Although these disorders are characterized by different manifestations, it appears that a common mechanism may be present which directs the fate of a cell to either degeneration or proliferation. There are two classes of proteins that have been extensively investigated in these diseases but their possible interaction during signal transduction has not been studied. Prolyl isomerase Pin1 is an enzyme which translates Ser/Thr-Pro phosphorylation into conformational changes able to modify the activities of its substrates...
January 2017: Therapeutic Advances in Medical Oncology
https://www.readbyqxmd.com/read/28202678/stress-induced-o-glcnacylation-an-adaptive-process-of-injured-cells
#16
REVIEW
Marissa R Martinez, Thiago Braido Dias, Peter S Natov, Natasha E Zachara
In the 30 years, since the discovery of nucleocytoplasmic glycosylation, O-GlcNAc has been implicated in regulating cellular processes as diverse as protein folding, localization, degradation, activity, post-translational modifications, and interactions. The cell co-ordinates these molecular events, on thousands of cellular proteins, in concert with environmental and physiological cues to fine-tune epigenetics, transcription, translation, signal transduction, cell cycle, and metabolism. The cellular stress response is no exception: diverse forms of injury result in dynamic changes to the O-GlcNAc subproteome that promote survival...
February 8, 2017: Biochemical Society Transactions
https://www.readbyqxmd.com/read/28202392/sophisticated-regulation-of-transcriptional-factors-by-the-bacterial-phosphoenolpyruvate-sugar-phosphotransferase-system
#17
REVIEW
Anne Galinier, Josef Deutscher
The phosphoenolpyruvate:sugar phosphotransferase system (PTS) is a carbohydrate transport and phosphorylation system present in bacteria of all different phyla and in archaea. It is usually composed of three proteins or protein complexes, enzyme I, HPr and enzyme II, which are phosphorylated at histidine or cysteine residues. However, in many bacteria, HPr can also be phosphorylated at a serine residue. The PTS functions not only as carbohydrate transporter, but also regulates numerous cellular processes by either phosphorylating its target proteins or by interacting with them in a phosphorylation-dependent manner...
February 12, 2017: Journal of Molecular Biology
https://www.readbyqxmd.com/read/28201982/transcriptome-profile-of-rat-genes-in-injured-spinal-cord-at-different-stages-by-rna-sequencing
#18
Ling-Ling Shi, Nan Zhang, Xiu-Mei Xie, Yue-Juan Chen, Rui Wang, Lin Shen, Jian-Sheng Zhou, Jian-Guo Hu, He-Zuo Lü
BACKGROUND: Spinal cord injury (SCI) results in fatal damage and currently has no effective treatment. The pathological mechanisms of SCI remain unclear. In this study, genome-wide transcriptional profiling of spinal cord samples from injured rats at different time points after SCI was performed by RNA-Sequencing (RNA-Seq). The transcriptomes were systematically characterized to identify the critical genes and pathways that are involved in SCI pathology. RESULTS: RNA-Seq results were obtained from total RNA harvested from the spinal cords of sham control rats and rats in the acute, subacute, and chronic phases of SCI (1 day, 6 days and 28 days after injury, respectively; n = 3 in every group)...
February 15, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28199410/ultrasensitive-detection-of-hiv-1-p24-antigen-by-a-hybrid-nanomechanical-optoplasmonic-platform-with-potential-for-detecting-hiv-1-at-first-week-after-infection
#19
Priscila M Kosaka, Valerio Pini, Montserrat Calleja, Javier Tamayo
Early detection of HIV infection is the best way to prevent spread of the disease and to improve the efficiency of the antiretroviral therapy. Nucleic acid amplification tests (NAAT) have become the gold-standard for detecting low-concentrations of the virus in blood. However, these methods are technically demanding and cost-prohibitive in developing countries. Immunoassays are more affordable and can be more easily adapted for point-of-care diagnosis. However, the sensitivity so far of these methods has been too low...
2017: PloS One
https://www.readbyqxmd.com/read/28198665/exploring-the-key-genes-and-signaling-transduction-pathways-related-to-the-survival-time-of-glioblastoma-multiforme-patients-by-a-novel-survival-analysis-model
#20
Yuan Xia, Chuanwei Yang, Nan Hu, Zhenzhou Yang, Xiaoyu He, Tingting Li, Le Zhang
BACKGROUND: This study is to explore the key genes and signaling transduction pathways related to the survival time of glioblastoma multiforme (GBM) patients. RESULTS: Our results not only showed that mutually explored GBM survival time related genes and signaling transduction pathways are closely related to the GBM, but also demonstrated that our innovated constrained optimization algorithm (CoxSisLasso strategy) are better than the classical methods (CoxLasso and CoxSis strategy)...
January 25, 2017: BMC Genomics
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