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https://www.readbyqxmd.com/read/28649259/the-cbl-and-cipk-gene-family-in-grapevine-vitis-vinifera-genome-wide-analysis-and-expression-profiles-in-response-to-various-abiotic-stresses
#1
Yue Xi, Jinyi Liu, Chao Dong, Zong-Ming Max Cheng
Calcium plays a central role in regulating signal transduction pathways. Calcineurin B-like proteins (CBLs), which harbor a crucial region consisting of EF hands that capture Ca(2+), interact in a specific manner with CBL-interacting protein kinases (CIPKs). This two gene families or their interacting-complex widely respond to various environment stimuli and development processes. The genome-wide annotation and specific expression patterns of CBLs and CIPKs, however, in grapevine remain unclear. In the present study, eight CBL and 20 CIPK genes were identified in grapevine genome, and divided into four and five subfamilies, respectively, based on phylogenetic analysis, and validated by gene structure and the distribution of conserved protein motifs...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28649228/ras-activity-tunes-the-period-and-modulates-the-entrainment-of-the-suprachiasmatic-clock
#2
REVIEW
Tsvetan Serchov, Rolf Heumann
The small GTPase Ras is a universal eukaryotic cytoplasmic membrane-anchored protein, which regulates diverse downstream signal transduction pathways that play an important role in the proper functioning of neurons. Ras activity is a central regulator of structural and functional synaptic plasticity in the adult nervous system, where it channels neuronal responses to various extracellular cues allowing the organism to adapt to complex environmental stimuli. The suprachiasmatic nucleus (SCN) is the principle pacemaker of the circadian clock, and the circadian and photic regulation of Ras activity in the SCN is an important modulator of the clockwork...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28648676/regulation-of-glut4-activity-in-myotubes-by-3-o-methyl-d-glucose
#3
Ofer Shamni, Guy Cohen, Arie Gruzman, Hilal Zaid, Amira Klip, Erol Cerasi, Shlomo Sasson
The rate of glucose influx to skeletal muscles is determined primarily by the number of functional units of glucose transporter-4 (GLUT4) in the myotube plasma membrane. The abundance of GLUT4 in the plasma membrane is tightly regulated by insulin or contractile activity, which employ distinct pathways to translocate GLUT4-rich vesicles from intracellular compartments. Various studies have indicated that GLUT4 intrinsic activity is also regulated by conformational changes and/or interactions with membrane components and intracellular proteins in the vicinity of the plasma membrane...
June 22, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28648582/molecular-mechanism-of-phosphate-signaling-in-plants
#4
REVIEW
Fei Wang, Meiju Deng, Jiming Xu, Xinlu Zhu, Chuanzao Mao
Phosphorus (P) is one of the indispensable macronutrients for plant growth and development. To adapt to low phosphate (Pi) environment, plants have evolved complex responsive and adaptive mechanisms for acquisition and remobilization of phosphate to maintain P homeostasis, which are regulated by complex gene regulation networks through the functions of Pi transporters (PTs) and other Pi starvation induced (PSI) genes. This review summarizes the recent progresses on the molecular regulation mechanism of phosphate transporters and phosphate signal transduction pathway (also called phosphate signaling) in dicot model plant Arabidopsis (Arabidopsis thaliana) and monocot model plant rice (Oryza sativa L...
June 22, 2017: Seminars in Cell & Developmental Biology
https://www.readbyqxmd.com/read/28648028/-expression-changes-of-notch-and-nuclear-factor-%C3%AE%C2%BAb-signaling-pathways-in-the-rat-heart-with-myocardial-infarction
#5
J L Jin, Z T Deng, R G Lyu, X H Liu, J R Wei
Objective: To observe the expression changes of Notch and nuclear factor-κB (NF-κB) signaling pathways in rat myocardium post myocardial infarction. Methods: Myocardial infarction was established by ligation of the left anterior descending coronary artery(MI group), sham rats (similar surgical procedure without coronary artery ligation) served as control, the rats were sacrificed at first week, 4th and 8th week after operation, the non-infarct myocardial tissue in both groups was obtained to detect the mRNA expression of Notch1, Dll4 and Hes1 by RT-PCR, the protein expression of NICD1 was detected by Western blot, the nuclear protein p65 content was detected to reflect the activation degree of NF-κB signaling in the cardiomyocytes...
June 24, 2017: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/28646556/injury-induced-maladaption-and-dysregulation-of-calcium-channel-alpha-2-delta-subunit-proteins-and-its-contribution-to-neuropathic-pain-development
#6
REVIEW
Nian Gong, John Park, Z David Luo
Voltage gated calcium channels (VGCCs) play important roles in physiological functions including modulations of neurotransmitter release, neuronal network activities, intracellular signaling pathways, and gene expression. Some pathological conditions, including nerve injuries, can cause dysregulation of VGCCs and their subunits. This in turn can lead to functional maladaption of VGCCs and their subunits, which can contribute to development of disorders such as pain sensations. This review summarized recent findings related to maladaptive changes of dysregulated VGCC alpha-2-delta-1 subunit (Cav α2 δ1 ) with a focus on exploration of mechanisms underlying contribution of Cav α2 δ1 to pain signal transduction...
June 23, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28646172/dacomitinib-a-pan-inhibitor-of-erbb-receptors-suppresses-growth-and-invasive-capacity-of-chemoresistant-ovarian-carcinoma-cells
#7
Majid Momeny, Ghazaleh Zarrinrad, Farima Moghaddaskho, Arash Poursheikhani, Ghazaleh Sankanian, Azam Zaghal, Shahab Mirshahvaladi, Fatemeh Esmaeili, Haniyeh Eyvani, Farinaz Barghi, Zahra Sabourinejad, Zivar Alishahi, Hassan Yousefi, Reza Ghasemi, Leila Dardaei, Davood Bashash, Bahram Chahardouli, Ahmad R Dehpour, Javad Tavakkoly-Bazzaz, Kamran Alimoghaddam, Ardeshir Ghavamzadeh, Seyed H Ghaffari
Epithelial ovarian cancer (EOC) is the most lethal gynaecological malignancy worldwide. Development of chemoresistance and peritoneal dissemination of EOC cells are the major reasons for low survival rate. Targeting signal transduction pathways which promote therapy resistance and metastatic dissemination is the key to successful treatment. Members of the ErbB family of receptors are over-expressed in EOC and play key roles in chemoresistance and invasiveness. Despite this, single-targeted ErbB inhibitors have demonstrated limited activity in chemoresistant EOC...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28645565/from-the-outside-from-within-biological-and-therapeutic-relevance-of-signal-transduction-in-t-cell-acute-lymphoblastic-leukemia
#8
REVIEW
Mariana L Oliveira, Padma Akkapeddi, Isabel Alcobia, Afonso R Almeida, Bruno A Cardoso, Rita Fragoso, Teresa L Serafim, João T Barata
T-cell acute lymphoblastic leukemia (T-ALL) is an aggressive hematological cancer that arises from clonal expansion of transformed T-cell precursors. In this review we summarize the current knowledge on the external stimuli and cell-intrinsic lesions that drive aberrant activation of pivotal, pro-tumoral intracellular signaling pathways in T-cell precursors, driving transformation, leukemia expansion, spread or resistance to therapy. In addition to their pathophysiological relevance, receptors and kinases involved in signal transduction are often attractive candidates for targeted drug development...
June 20, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28645352/r%C3%A3-sistances-aux-hormones-st%C3%A3-ro%C3%A3-des-physiologie-et-pathologie-pathophysiology-of-steroid-resistance-syndrome
#9
N Ramos, M Lombès
Steroid resistance syndrome (mineralocorticoids, glucocorticoids, estrogens, androgens) is a rare clinical disorder, androgen insensitivity syndrome being the most commonly described. Resistance syndromes are characterized by elevated steroid hormone levels, secondary to an impaired signal transduction and a lack of negative feedback, without any specific clinical signs of steroid excess. In most cases, steroid hormone resistance is generally caused by steroid receptor mutations. Several nonsense and missense mutations or deletions have already been described for all steroid receptors, except for the progesterone receptor...
October 2016: Annales D'endocrinologie
https://www.readbyqxmd.com/read/28644897/trpa1-and-trpv1-contribute-to-propofol-mediated-antagonism-of-u46619-induced-constriction-in-murine-coronary-arteries
#10
Pritam Sinharoy, Ian N Bratz, Sayantani Sinha, Loral E Showalter, Spencer R Andrei, Derek S Damron
BACKGROUND: Transient receptor potential (TRP) ion channels have emerged as key components contributing to vasoreactivity. Propofol, an anesthetic is associated with adverse side effects including hypotension and acute pain upon infusion. Our objective was to determine the extent to which TRPA1 and/or TRPV1 ion channels are involved in mediating propofol-induced vasorelaxation of mouse coronary arterioles in vitro and elucidate the potential cellular signal transduction pathway by which this occurs...
2017: PloS One
https://www.readbyqxmd.com/read/28644386/capsaicin-induces-autophagy-and-apoptosis-in-human-nasopharyngeal-carcinoma-cells-by-downregulating-the-pi3k-akt-mtor-pathway
#11
Yu-Tsai Lin, Hung-Chen Wang, Yi-Chiang Hsu, Chung-Lung Cho, Ming-Yu Yang, Chih-Yen Chien
Capsaicin is a potential chemotherapeutic agent for different human cancers. In Southeast China, nasopharyngeal carcinoma (NPC) has the highest incidence of all cancers, but final treatment outcomes are unsatisfactory. However, there is a lack of information regarding the anticancer activity of capsaicin in NPC cells, and its effects on the signaling transduction pathways related to apoptosis and autophagy remain unclear. In the present study, the precise mechanisms by which capsaicin exerts anti-proliferative effects, cell cycle arrest, autophagy and apoptosis were investigated in NPC-TW01 cells...
June 23, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28643757/significance-of-expression-of-suppressor-of-cytokine-signaling-proteins-suppressor-of-cytokine-signaling-1-suppressor-of-cytokine-signaling-2-and-suppressor-of-cytokine-signaling-3-in-papillary-thyroid-cancer
#12
Toral Pundrik Kobawala, Trupti I Trivedi, Kinjal Kevin Gajjar, Girish H Patel, Nandita R Ghosh
PURPOSE: Uncontrolled cytokine signal transduction largely associated with oncogene activation, can have disastrous biological consequences. The suppressor of cytokine signaling (SOCS) proteins represent one of the mechanisms by which this rampant signaling can be dissipated. Thus, we aimed to study the expression of SOCS-1, SOCS-2, and SOCS-3 in patients having benign thyroid disease and papillary thyroid cancer. MATERIALS AND METHODS: SOCS protein expression was studied in 45 patients with benign thyroid disease and in 83 papillary thyroid cancer patients by immunohistochemistry and their association with clinicopathological characteristics and overall survival in cancer patients were analyzed using SPSS software...
April 2017: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28642750/non-pylori-helicobacters-nhphs-induce-shifts-in-gastric-microbiota-in-helicobacter-pylori-infected-patients
#13
Xianhui Peng, Liya Zhou, Yanan Gong, Zhiqiang Song, Lihua He, Sanren Lin, Jianzhong Zhang
To explore the effects of gastric non-H. pylori Helicobacter species(NHPH) on the structure and potential function of gastric microbiota, we employed 16S rRNA gene sequencing on 164 gastric biopsy specimens from NHPH (H. suis, H. felis, H. salomonis) /H. pylori coinfection individuals, H. pylori monoinfection individuals and healthy controls. The results demonstrated that marked structural and functional variations between H. pylori mono- and coinfection samples (HPHS, HPHF, HPHM). The changes in bacterial structure induced by NHPH are mainly attributed to their ability of gastric acid secretion inhibition as well as bacterial chemotaxis...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28642749/rna-seq-reveals-enhanced-sugar-metabolism-in-streptococcus-mutans-co-cultured-with-candida-albicans-within-mixed-species-biofilms
#14
Jinzhi He, Dongyeop Kim, Xuedong Zhou, Sang-Joon Ahn, Robert A Burne, Vincent P Richards, Hyun Koo
Early childhood caries (ECC), which can lead to rampant tooth-decay that is painful and costly to treat, is one of the most prevalent infectious diseases affecting children worldwide. Previous studies support that interactions between Streptococcus mutans and Candida albicans are associated with the pathogenesis of ECC. The presence of Candida enhances S. mutans growth, fitness and accumulation within biofilms in vitro, although the molecular basis for these behaviors is undefined. Using an established co-cultivation biofilm model and RNA-Seq, we investigated how C...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28642743/hiv-1-nef-signaling-in-intestinal-mucosa-epithelium-suggests-the-existence-of-an-active-inter-kingdom-crosstalk-mediated-by-exosomes
#15
REVIEW
Cristina Felli, Olimpia Vincentini, Marco Silano, Andrea Masotti
The human intestinal mucosal surface represents the first defense against pathogens and regulates the immune response through the combination of epithelial cell (EC) functions and immunological factors. ECs act as sensors of luminal stimuli and interact with the immune cells through signal-transduction pathways, thus representing the first barrier that HIV-1 virus encounters during infection. In particular, the HIV-1 Nef protein plays a crucial role in viral invasion and replication. Nef is expressed early during viral infection and interacts with numerous cellular proteins as a scaffold/adaptor...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28642633/proteases-revisited-roles-and-therapeutic-implications-in-fibrosis
#16
REVIEW
Jakub Kryczka, Joanna Boncela
Proteases target many substrates, triggering changes in distinct biological processes correlated with cell migration, EMT/EndMT and fibrosis. Extracellular protease activity, demonstrated by secreted and membrane-bound protease forms, leads to ECM degradation, activation of other proteases (i.e., proteolysis of nonactive zymogens), decomposition of cell-cell junctions, release of sequestered growth factors (TGF-β and VEGF), activation of signal proteins and receptors, degradation of inflammatory inhibitors or inflammation-related proteins, and changes in cell mechanosensing and motility...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28642544/resistin-promotes-the-abnormal-type-i-collagen-phenotype-of-subchondral-bone-in-obese-patients-with-end-stage-hip-osteoarthritis
#17
Ashleigh M Philp, Rebecca L Collier, Liam M Grover, Edward T Davis, Simon W Jones
The purpose of this study was to determine the effect of adiposity on the architecture and composition of hip OA subchondral bone, and to examine the pathological role of adipokines. Femoral heads were collected from normal-weight or over-weight/obese patients with hip OA. Structural parameters of subchondral bone were determined by MicroCT and type I collagen α1/α2 ratio was determined by SDS PAGE and by qRT-PCR in ex-vivo bone explants. The serum concentration of adipokines was determined by Luminex. The effect of resistin on primary OA osteoblasts was determined by analysis of Wnt pathway signal transduction, bone nodule formation, and osteoblast metabolic activity...
June 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28642370/in-vitro-cytochrome-p450-46a1-cyp46a1-activation-by-neuroactive-compounds
#18
Natalia Mast, Kyle W Anderson, Kevin M Johnson, Thanh T N Phan, F Peter Guengerich, Irina A Pikuleva
Cytochrome P450 46A1 (CYP46A1, cholesterol 24-hydroxylase) is the enzyme responsible for the majority of cholesterol elimination from the brain. Previously, we found that the anti-HIV drug efavirenz (EFV) can pharmacologically activate CYP46A1 in mice. Herein, we investigated whether CYP46A1 could also be activated by endogenous compounds, including major neurotransmitters. In vitro experiments with purified recombinant CYP46A1 indicated that CYP46A1 is activated by L-glutamate (L-Glu), L-aspartate, γ-aminobutyric acid, and acetylcholine, with L-Glu eliciting the highest increase (3-fold) in CYP46A1-mediated cholesterol 24-hydroxylation...
June 22, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28641621/-effect-of-down-regulatory-nucleostemin-expression-on-autophagy-activities-in-p53-null-hl-60-leukemia-cells
#19
Yuan-Yu Wei, Zhao-Bo Li, Fan Zhang, Ning-Ning Wang, Shuai Liu, Bao-Hong Yue
OBJECTIVE: Based on previous microarry and bioinformatic analysis results, to investigate the effect of nucleostemin(NS) expression down-regulation on autophagy activity in p53 null HL-60 leukemia cells, so as to provide evidence for studying mechanisms of p53-independent signal pathway of NS in details. METHODS: The autophagy activity of HL-60 cells after down-regulation of NS expression was detected with acidine orange staining, Western blot and transmission electron mcrioscope technique...
June 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/28641092/nuclear-mechanotransduction-sensing-the-force-from-within
#20
REVIEW
Avathamsa Athirasala, Nivi Hirsch, Amnon Buxboim
The cell nucleus is a hallmark of eukaryotic evolution, where gene expression is regulated and the genome is replicated and repaired. Yet, in addition to complex molecular processes, the nucleus has also evolved to serve physical tasks that utilize its optical and mechanical properties. Nuclear mechanotransduction of externally applied forces and extracellular stiffness is facilitated by the physical connectivity of the extracellular environment, the cytoskeleton and the nucleoskeletal matrix of lamins and chromatin...
June 19, 2017: Current Opinion in Cell Biology
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