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https://www.readbyqxmd.com/read/28110457/reduced-proliferation-and-colony-formation-of-head-and-neck-squamous-cell-carcinoma-hnscc-after-dual-targeting-of-egfr-and-hedgehog-pathways
#1
Hannes Liebig, Georg Günther, Marlen Kolb, Christian Mozet, Andreas Boehm, Andreas Dietz, Gunnar Wichmann
PURPOSE: The hedgehog signalling pathway (Hh) is frequently active in head and neck squamous cell carcinoma (HNSCC). Overexpressed Hh associates with poor prognosis. The Hh inhibitor vismodegib targets smoothened, and based on molecular data, may prevent resistance to EGFR targeting. METHODS: To elucidate potential roles of vismodegib in HNSCC therapy, its sole effects and those combined with cisplatin, docetaxel, and cetuximab on HNSCC cell lines were assessed by MTT metabolisation and BrdU incorporation...
January 21, 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/28110389/a-novel-lectin-from-artocarpus-lingnanensis-induces-proliferation-and-th1-th2-cytokine-secretion-through-cd45-signaling-pathway-in-human-t-lymphocytes
#2
Bo Cui, Lu Li, Qiyan Zeng, Faquan Lin, Lijun Yin, Liejun Liao, Min Huang, Jingping Wang
Lectins are carbohydrate-binding proteins and have been used for purification and characterization of glycoproteins. In this study, a novel 58.9-kDa tetrameric lectin from Artocarpus lingnanensis seeds was purified, characterized, and its mitogenic potential was evaluated. The hemagglutination inhibition assay indicated that Artocarpus lingnanensis lectin (ALL) showed specificity toward galactose. ALL was effectively purified in a single-step using affinity chromatography on a galactose-Sepharose column. ALL showed pH optima between 5...
January 21, 2017: Journal of Natural Medicines
https://www.readbyqxmd.com/read/28110342/tgf-%C3%AE-1-smad3-signaling-pathway-suppresses-cell-apoptosis-in-cerebral-ischemic-stroke-rats
#3
Haiping Zhu, Qunfeng Gui, Xiaobo Hui, Xiaodong Wang, Jian Jiang, Lianshu Ding, Xiaoyang Sun, Yanping Wang, Huaqun Chen
BACKGROUND We desired to observe the changes of transforming growth factor-β1/drosophila mothers against decapentaplegic protein (TGF-β1/Smad3) signaling pathway in the hippocampus region of cerebral ischemic stroke rats so that the effects of this pathway on nerve cells can be investigated. MATERIAL AND METHODS The ischemic stroke models were built by middle cerebral artery occlusion (MCAO) in vivo and oxygen-glucose deprivation (OGD) in vitro. TGF-β1 and TGF-β1 inhibitors were injected into rat models while TGF-β1, TGF-β1 siRNA, Smad3, and Smad3 siRNA were transfected into cells...
January 22, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28110332/role-of-insulin-in-placental-transport-of-nutrients-in-gestational-diabetes-mellitus
#4
María Ruiz-Palacios, Antonio José Ruiz-Alcaraz, María Sanchez-Campillo, Elvira Larqué
BACKGROUND: Gestational diabetes mellitus (GDM) is associated with increased fetal adiposity, which may increase the risk of obesity in adulthood. The placenta has insulin receptors and maternal insulin can activate its signaling pathways, affecting the transport of nutrients to the fetus. However, the effects of diet or insulin treatment on the placental pathophysiology of GDM are unknown. SUMMARY: There are very few studies on possible defects in the insulin signaling pathway in the GDM placenta...
January 21, 2017: Annals of Nutrition & Metabolism
https://www.readbyqxmd.com/read/28110316/insensitivity-of-pi3k-akt-gsk3-signaling-in-peripheral-blood-mononuclear-cells-of-age-related-macular-degeneration-patients
#5
Liu Xunxian, Yao Zemin
Our recent studies with cultured retinal pigment epithelium cells suggested that overexpression of interleukin 17 receptor C (IL-17RC), a phenomenon observed in peripheral blood and chorioretinal tissues with age-related macular degeneration (AMD), was associated with altered activation of phosphatidylinositide 3-kinase (PI3K), Akt, and glycogen synthase kinase 3 (GSK3). We wondered whether or not altered PI3K, Akt, and GSK3 activities could be detected in peripheral blood mononuclear cells (PBMC) obtained from AMD patients...
January 19, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28110208/inflammatory-pathway-genes-associated-with-inter-individual-variability-in-the-trajectories-of-morning-and-evening-fatigue-in-patients-receiving-chemotherapy
#6
Fay Wright, Marilyn Hammer, Steven M Paul, Bradley E Aouizerat, Kord M Kober, Yvette P Conley, Bruce A Cooper, Laura B Dunn, Jon D Levine, Gail DEramo Melkus, Christine Miaskowski
Fatigue, a highly prevalent and distressing symptom during chemotherapy (CTX), demonstrates diurnal and interindividual variability in severity. Little is known about the associations between variations in genes involved in inflammatory processes and morning and evening fatigue severity during CTX. The purposes of this study, in a sample of oncology patients (N=543) with breast, gastrointestinal (GI), gynecological (GYN), or lung cancer who received two cycles of CTX, were to determine whether variations in genes involved in inflammatory processes were associated with inter-individual variability in initial levels as well as in the trajectories of morning and evening fatigue...
January 19, 2017: Cytokine
https://www.readbyqxmd.com/read/28110122/17%C3%AE-estradiol-enhances-sulforaphane-cardioprotection-against-oxidative-stress
#7
Cristina Angeloni, Gabriella Teti, Maria Cristina Barbalace, Marco Malaguti, Mirella Falconi, Silvana Hrelia
The lower incidence of ischemic heart disease in female with respect to male gender suggests the possibility that female sex hormones could have specific effects in cardiovascular protection. 17β-Estradiol is the predominant premenopausal circulating form of estrogen and has a protective role on the cardiovascular system. Recent evidences suggest that gender can influence the response to cardiovascular medications; therefore, we hypothesized that sex hormones could also modulate the cardioprotective effects of nutraceutical compounds, such as the isothiocyanate sulforaphane, present in Brassica vegetables...
January 12, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28110102/transcriptional-profiling-reveals-protective-mechanisms-in-brains-of-long-lived-mice
#8
Christiane Frahm, Akash Srivastava, Silvio Schmidt, Jule Mueller, Marco Groth, Madlen Guenther, Yuanyuan Ji, Steffen Priebe, Matthias Platzer, Otto W Witte
The brain plays a central role in organismal aging but is itself most sensitive to aging-related functional impairments and pathologies. Insights into processes underlying brain aging are the basis to positively impact brain health. Using high-throughput RNA sequencing and quantitative polymerase chain reaction (PCR), we monitored cerebral gene expression in mice throughout their whole lifespan (2, 9, 15, 24, and 30 months). Differentially expressed genes were clustered in 6 characteristic temporal expression profiles, 3 of which revealed a distinct change between 24 and 30 months, the period when most mice die...
December 27, 2016: Neurobiology of Aging
https://www.readbyqxmd.com/read/28110090/spatiotemporal-reconstruction-of-auditory-steady-state-responses-to-acoustic-amplitude-modulations-potential-sources-beyond-the-auditory-pathway
#9
Ehsan Darestani Farahani, Tine Goossens, Jan Wouters, Astrid van Wieringen
Investigating the neural generators of auditory steady-state responses (ASSRs), i.e., auditory evoked brain responses, with a wide range of screening and diagnostic applications, has been the focus of various studies for many years. Most of these studies employed a priori assumptions regarding the number and location of neural generators. The aim of this study is to reconstruct ASSR sources with minimal assumptions in order to gain in-depth insight into the number and location of brain regions that are activated in response to low- as well as high-frequency acoustically amplitude modulated signals...
January 18, 2017: NeuroImage
https://www.readbyqxmd.com/read/28110075/tlr9-mediated-regulatory-b10-cell-amplification-following-sub-total-body-irradiation-implications-in-attenuating-eae
#10
Jinsheng Hong, Jie Fang, Ruilong Lan, Qi Tan, Yeping Tian, Mei Zhang, Paul Okunieff, Lurong Zhang, Jianhua Lin, Deping Han
Autoimmunity and inflammation are controlled in part by regulatory B (Breg) cells, including the recently identified IL-10-competent B10 cell subset that represents 1%-3% of mouse spleen B cells. In this study, the influence of irradiation on Breg/B10 cell generation and IL-10 production mediated by TLR9 signaling pathways was investigated. Spleen and peritoneal cavity Breg/B10 cell frequencies were significantly expanded three weeks after sub-total body irradiation (sub-TBI, 5Gy or 10Gy) in adult male wild type (WT) C57BL/6(B6) mice but not in TLR9(-/-) mice...
January 18, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28110034/transcriptome-profiles-of-the-clam-meretrix-petechialis-hepatopancreas-in-response-to-vibrio-infection
#11
Fengjuan Jiang, Xin Yue, Hongxia Wang, Baozhong Liu
Microbial diseases have received much attention due to their enormous destruction of aquaculture, and Vibrio parahaemolyticus is one of the main pathogens that cause bacterial disease in the clam Meretrix petechialis. To better understand the molecular mechanisms of the immune response to Vibrio in M. petechialis, RNA-Seq was applied to explore global expression changes of hepatopancreas from this clam after Vibrio challenge. There were 199,318,966 clean reads obtained by Illumina sequencing, which were further assembled into 214,577 transcripts, and then 147,255 unigenes with an N50 of 1393 bp were identified...
January 18, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28109909/erk2-zeb1-mir-101-1-axis-contributes-to-epithelial-mesenchymal-transition-and-cell-migration-in-cancer
#12
Kailash Chandra Mangalhara, Siddharth Manvati, Sunil Kumar Saini, Kalaiarasan Ponnusamy, Gaurav Agarwal, Suresh K Abraham, Rameshwar N K Bamezai
Regulation of metastasis continues to remain enigmatic despite our improved understanding of cancer. Identification of microRNAs associated with metastasis in the recent past has provided a new hope. Here, we show how microRNA-101 (miR-101) regulates two independent processes of cellular metastasis by targeting pro-metastatic upstream regulatory transcription factors, ZEB1 and ZEB2, and downstream effector-actin modulators, RHOA and RAC1, providing a single target for therapeutic intervention. Further, we depict how down-regulation of miR-101 by extracellular signal-regulated kinase-2 (ERK2) is vital for MAP kinase pathway induced cellular migration and mesenchymal transition...
January 18, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28109906/succinate-in-the-cancer-immune-cycle
#13
Shuai Jiang, Wei Yan
Succinate is an important intermediate of the tricarboxylic acid (TCA) cycle. In mitochondria, it plays a crucial role in generating adenosine triphosphate. Succinate metabolism is also intertwined with the metabolism of other metabolites and with the "GABA shunt" of the glutamine pathway. Recently, it has become increasingly apparent that the roles of succinate extend into the realms of immunity and cancer. Succinate is a key modulator of the hypoxic response, an important player in tumorigenesis; succinate is also involved in protein succinylation, a novel posttranslational modification pathway...
January 18, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28109891/redox-regulation-of-electrophilic-signaling-by-reactive-persulfides-in-cardiac-cells
#14
REVIEW
Motohiro Nishida, Akiyuki Nishimura, Tetsuro Matsunaga, Hozumi Motohashi, Shingo Kasamatsu, Takaaki Akaike
Maintaining a redox balance by means of precisely controlled systems that regulate production, and elimination, and metabolism of electrophilic substances (electrophiles) is essential for normal cardiovascular function. Electrophilic signaling is mainly regulated by endogenous electrophiles that are generated from reactive oxygen species, nitric oxide, and the derivative reactive species of nitric oxide during stress responses, as well as by exogenous electrophiles including compounds in foods and environmental pollutants...
January 18, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28109889/vascular-remodeling-a-redox-modulated-mechanism-of-vessel-caliber-regulation
#15
REVIEW
Leonardo Y Tanaka, Francisco R M Laurindo
Vascular remodeling, i.e. whole-vessel structural reshaping, determines lumen caliber in (patho)physiology. Here we review mechanisms underlying vessel remodeling, with emphasis in redox regulation. First, we discuss confusing terminology and focus on strictu sensu remodeling. Second, we propose a mechanobiological remodeling paradigm based on the concept of tensional homeostasis as a setpoint regulator. We first focus on shear-mediated models as prototypes of remodeling closely dominated by highly redox-sensitive endothelial function...
January 18, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28109881/production-of-aba-responses-requires-both-the-nuclear-and-cytoplasmic-functional-involvement-of-pyr1
#16
EunJoo Park, Tae-Houn Kim
Abscisic acid (ABA) enhances stress tolerant responses in plants against unfavorable environmental conditions. In Arabidopsis, ABA promotes interactions between PYR/PYL/RCARs and PP2C, thereby allowing SnRK2s to phosphorylate downstream components required for the regulation of gene expression or for gating ion channels. Because PYR1 is known to localize to nucleus and cytoplasm it is a question whether nuclear or cytoplasmic PYR1 confer different functions to the ABA signaling pathway, as has been previously shown for regulatory proteins...
January 18, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28109879/selenomethionine-promoted-hippocampal-neurogenesis-via-the-pi3k-akt-gsk3%C3%AE-wnt-pathway-in-a-mouse-model-of-alzheimer-s-disease
#17
REVIEW
Rui Zheng, Zhong-Hao Zhang, Chen Chen, Yao Chen, Shi-Zheng Jia, Qiong Liu, Jia-Zuan Ni, Guo-Li Song
The maintenance of neural system integrity and function is the ultimate goal for the treatment of neurodegenerative disease such as Alzheimer's disease (AD). Neurogenesis plays an integral role in the maintenance of neural and cognitive functions, and its dysfunction is regarded as a major cause of cognitive impairment in AD. Moreover, the induction of neurogenesis by targeting endogenous neural stem cells (NSCs) is considered as one of the most promising treatment strategies. Our previous studies demonstrated that selenomethionine (Se-Met) was able to reduce β-amyloid peptide (Aβ) deposition, decrease Tau protein hyperphosphorylation and markedly improve cognitive functions in triple transgenic (3xTg) AD mice...
January 18, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28109865/a-survey-of-membrane-receptor-regulation-in-valvular-interstitial-cells-cultured-under-mechanical-stresses
#18
Mir S Ali, Xinmei Wang, Carla M R Lacerda
Degenerative valvular diseases have been linked to the action of abnormal forces on valve tissues during each cardiac cycle. It is now accepted that the degenerative behavior of valvular cells can be induced mechanically in vitro. This approach of in vitro modeling of valvular cells in culture constitutes a powerful tool to study, characterize, and develop predictors of heart valve degeneration in vivo. Using such in vitro systems, we expect to determine the exact signaling mechanisms that trigger and mediate propagation of degenerative signals...
January 18, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28109841/disruption-of-aromatase-homeostasis-as-the-cause-of-a-multiplicity-of-ailments-a-comprehensive-review
#19
REVIEW
Seema Patel
Human health is beset with a legion of ailments, which is exacerbated by the lifestyle errors. Out of the numerous enzymes in human body, aromatase, a cytochromes P450 enzyme is particularly very critical. Occurring at the crossroads of multiple signalling pathways, its homeostasis is vital. Unfortunately, medications, hormone therapy, chemical additives in food, and endocrine-disrupting personal care products are oscillating the aromatase concentration beyond the permissible level. As this enzyme converts androgens (C19) into estrogens (C18), its agitation has different outcomes in different genders and age groups...
January 18, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28109840/isoform-specific-phosphorylation-in-human-hsp90%C3%AE-affects-interaction-with-clients-and-the-cochaperone-cdc37
#20
Minh T N Nguyen, Robert A Knieß, Soumya Daturpalli, Laura Le Breton, Xiangyu Ke, Xuemei Chen, Matthias P Mayer
Hsp90s assist maturation of many key regulators of signal transduction pathways and cellular control circuits like protein kinases and transcription factors and chaperone their stability and activity. In this function Hsp90s cooperate with some 30 cochaperones and they are themselves subject to regulation by numerous posttranslational modifications. In vertebrates two major isoforms exist in the cytosol, Hsp90α and Hsp90β, which share a high degree of sequence identity and are expressed in tissue- and environmental conditions-dependent manner...
January 18, 2017: Journal of Molecular Biology
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