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https://www.readbyqxmd.com/read/28215051/-pro-renin-receptor-atp6ap2-depletion-arrests-as4-1-cells-in-the-g0-g1-phase-thereby-increasing-formation-of-primary-cilia
#1
Heike Wanka, Philipp Lutze, Doreen Staar, Barbara Peters, Anica Morch, Lukas Vogel, Ravi Kumar Chilukoti, Georg Homuth, Jaroslaw Sczodrok, Inga Bäumgen, Jörg Peters
The (pro)renin receptor [(P)RR, ATP6AP2] is a multifunctional transmembrane protein that activates local renin-angiotensin systems, but also interacts with Wnt pathways and vacuolar H(+) -ATPase (V-ATPase) during organogenesis. The aim of this study was to characterize the role of ATP6AP2 in the cell cycle in more detail. ATP6AP2 down-regulation by siRNA in renal As4.1 cells resulted in a reduction in the rate of proliferation and a G0/G1 phase cell cycle arrest. We identified a number of novel target genes downstream of ATP6AP2 knock-down that were related to the primary cilium (Bbs-1, Bbs-3, Bbs-7, Rabl5, Ttc26, Mks-11, Mks-5, Mks-2, Tctn2, Nme7) and the cell cycle (Pierce1, Clock, Ppif)...
February 19, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28214940/transcriptional-and-biochemical-alterations-in-zebrafish-eleuthero-embryos-danio-rerio-after-exposure-to-synthetic-progestogen-dydrogesterone
#2
Wen-Jun Shi, Guang-Guo Ying, Guo-Yong Huang, Yan-Qiu Liang, Li-Xin Hu, Jian-Liang Zhao, Jin-Na Zhang
Little information has so far been known on the effects of synthetic progestogen dydrogesterone (DDG) in organisms like fish. This study aimed to investigate the effects of DDG on the transcriptional and biochemical alterations in zebrafish eleuthero-embryos. Zebrafish eleuthero-embryos were analyzed for the transcriptional alterations by real-time quantitative PCR (RT-qPCR) and biochemical changes by attenuated total reflection Fourier-transform infrared spectroscopy (ATR-FITR) after 144 h exposure to DDG...
February 18, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28214917/mtss1-promotes-maturation-and-maintenance-of-cerebellar-neurons-via-splice-variant-specific-effects
#3
Thorsten Sistig, Fanziska Lang, Sebastian Wrobel, Stephan L Baader, Karl Schilling, Britta Eiberger
Efficient coupling of the actin cytoskeleton to the cell membrane is crucial for histogenesis and maintenance of the nervous system. At this critical interface, BAR (Bin-Amphiphysin-Rvs) proteins regulate membrane bending, shown to be instrumental for mobility and morphogenesis of individual cells. Yet, the systemic significance of these proteins remains largely unexplored. Here, we probe the role of a prominent member of this protein family, the inverse-BAR protein Mtss1, for the development and function of a paradigmatic neuronal circuit, the cerebellar cortex...
February 18, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/28214904/rs10719-polymorphism-located-within-drosha-3-untranslated-region-is-responsible-for-development-of-primary-hypertension-by-disrupting-binding-with-microrna-27b
#4
Yabing Zhang, Ai-Lin Cao, Chun Dong
BACKGROUND MiR-27b is reportedly involved with many diseases (e.g., gastric cancer) by acting on different signaling pathways. In this study, we aimed at understanding the relationship between miR-27b and hypertension and its underlying molecular mechanism. MATERIAL AND METHODS Peripheral blood was collected from patients with hypertension, and statistical analysis was performed to study the association between rs10719 and risk of hypertension. Tissue samples were collected from patients with lung cancer, and the expression of miR-27b and DROSHA was determined using Western blot analysis and real-time PCR...
February 19, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28214897/mir-125b-regulates-the-osteogenic-differentiation-of-human-mesenchymal-stem-cells-by-targeting-bmpr1b
#5
Huaqing Wang, Zhao Xie, Tianyong Hou, Zhiqiang Li, Ke Huang, Jicheng Gong, Wei Zhou, Kanglai Tang, Jianzhong Xu, Shiwu Dong
BACKGROUND/AIMS: Osteogenic differentiation of mesenchymal stem cells (MSCs) plays a crucial role in bone regeneration and bone reparation. This complex process is regulated precisely and firmly by specific factors. Recent studies have demonstrated that miR-125b regulates osteogenic differentiation, but little is known about the molecular mechanisms of this regulation. Furthermore, how miR-125b regulates the osteogenic differentiation of MSCs still needs elucidation. METHODS: In the present study, human bone marrow-derived mesenchymal stem cells (hBMSCs) were isolated and induced to osteoblasts with miR-125b inhibition or overexpression...
January 31, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214890/a-new-perspective-for-osteosarcoma-therapy-proteasome-inhibition-by-mln9708-2238-successfully-induces-apoptosis-and-cell-cycle-arrest-and-attenuates-the-invasion-ability-of-osteosarcoma-cells-in-vitro
#6
Renhao Liu, Chunjiang Fu, Jiabing Sun, Xvming Wang, Shuo Geng, Xiaoyu Wang, Jilong Zou, Zhenggang Bi, Chenglin Yang
BACKGROUND: The proteasome exists in all eukaryotic cells and provides the main route of intracellular proteins degradation involved in cell growth and apoptosis. Proteasome inhibition could block protein degradation pathways and disturb regulatory networks, possibly leading to profound effects on cell growth, particularly in cancer cells. A proteasome inhibitor with an appropriate toxicity index for malignant cells rather than normal cells would be an attractive anticancer therapy. METHODS: The human osteosarcoma (OS) cell lines MG-63 and Saos-2 and normal osteoblast cells were used to study the antitumour activity of the proteasome inhibitor MLN9708/2238...
January 27, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214889/regulatory-role-of-mirna-375-in-expression-of-bmp15-gdf9-receptors-and-its-effect-on-proliferation-and-apoptosis-of-bovine-cumulus-cells
#7
Hongyan Chen, Chang Liu, Hao Jiang, Yan Gao, Mingqiang Xu, Jiawei Wang, Siyuan Liu, Yao Fu, Xulei Sun, Jiajun Xu, Jiabao Zhang, Lisheng Dai
BACKGROUND: Bone morphogenetic protein 15 (BMP15) and growth differentiation factor 9 (GDF9) are members of the transforming growth factor beta (TGF-β) superfamily. Through autocrine and paracrine mechanisms, these two factors can regulate cell differentiation, proliferation, and other functions in the ovary locally. Furthermore, GDF9 and BMP15 play vital roles in follicular growth, atresia, ovulation, fertilization, reproduction, and maintenance. Numerous studies have demonstrated a synergy between BMP15 and GDF9...
January 27, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214867/the-novel-long-noncoding-rna-tusc7-inhibits-proliferation-by-sponging-mir-211-in-colorectal-cancer
#8
Jian Xu, Rui Zhang, Jian Zhao
BACKGROUND/AIMS: The novel long noncoding RNA (lncRNA) tumor suppressor candidate 7 (TUSC7) has been reported as a potential tumor suppressor, while the functional role of TUSC7 is still unknown in colorectal cancer (CRC). Here, we characterized TUSC7 expression profile in CRC patients and investigated its biological function and potential molecular mechanism. METHODS: RNA isolation, qRT-PCR, cell counter kit-8 assay, cell cycle assay, EdU assay, and western blot were performed...
February 8, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214865/inhibition-of-trpc6-signal-pathway-alleviates-podocyte-injury-induced-by-tgf-%C3%AE-1
#9
Haiting Huang, Yanwu You, Xu Lin, Chunrong Tang, Xiangjun Gu, Meiying Huang, Youling Qin, Junhua Tan, Feifan Huang
BACKGROUND/AIMS: Transforming growth factor beta 1 (TGF-β1) plays a critical role in the pathogenesis of glomerulosclerosis. The purpose of this study was to examine the effects of inhibition of transient receptor potential cation channel C6 (TRPC6) on podocyte injury induced by TGF-β1 via nephrin and desmin mechanisms. METHODS: A rat model of nephropathy was first induced by intravenous injections of adriamycin to determine TRPC6 signal pathway engaged in glomerulosclerosis in vivo...
January 18, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214851/lysophosphatidic-acid-promotes-epithelial-to-mesenchymal-transition-in-ovarian-cancer-cells-by-repressing-sirt1
#10
Upasana Ray, Sib Sankar Roy, Shreya Roy Chowdhury
BACKGROUND/AIMS: Epithelial-to-mesenchymal transition (EMT) plays an essential role in the transition from early to invasive phenotype, however the underlying mechanisms still remain elusive. Herein, we propose a mechanism through which the class-III deacetylase SIRT1 regulates EMT in ovarian cancer (OC) cells. METHODS: Expression analysis was performed using Q-PCR, western blot, immunofluorescence and fluorescence-IHC study. Matrigel invasion assay was used for the invasion study...
February 14, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214828/role-for-target-of-rapamycin-mtor-signal-pathway-in-regulating-neuronal-injury-after-intracerebral-hemorrhage
#11
Jie-Ping Wang, Meng-Yu Zhang
BACKGROUND/AIMS: Mammalian target of rapamycin (mTOR) is a serine/threonine protein kinase and activation of its signal pathway plays an important role in regulating protein growth and synthesis as well as cell proliferation and survival. In the present study, we examined the contribution of mTOR signal and its downstream products to brain injuries induced by intracerebral hemorrhage (ICH) in rats. METHODS: Western Blot analysis was employed to examine the protein expression of mTOR and its downstream pathway and Caspase-3...
January 18, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214827/potential-regulators-driving-the-transition-in-nonalcoholic-fatty-liver-disease-a-stage-based-view
#12
Yi Lou, Yi-Dan Chen, Fu-Rong Sun, Jun-Ping Shi, Yu Song, Jin Yang
BACKGROUND AND AIM: The incidence of nonalcoholic fatty liver disease (NAFLD), ranging from mild steatosis to hepatocellular injury and inflammation, increases with the rise of obesity. However, the implications of transcription factors network in progressive NAFLD remain to be determined. METHODS: A co-regulatory network approach by combining gene expression and transcription influence was utilized to dissect transcriptional regulators in different NAFLD stages...
January 30, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214753/structural-and-functional-insights-into-corrinoid-iron-sulfur-protein-from-human-pathogen-clostridium-difficile
#13
Yaozhu Wei, Xiaofei Zhu, Sixue Zhang, Xiangshi Tan
The human pathogen Clostridium difficile infection (CDI) is one of the most important healthcare-associated infections. The Wood-Ljungdahl pathway, which is responsible for Acetyl-CoA biosynthesis, is essential for the survival of the pathogen and is absent in humans. The key proteins and enzymes involved in the pathway are attractive targets for the treatment of CDI. Corrinoid iron-sulfur protein (CoFeSP) is a key protein and acts as a methyl transformer in the Wood-Ljungdahl pathway. In this study, CoFeSP from Clostridium difficile (CoFeSPCd) was cloned, expressed in E...
February 13, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/28214749/impairment-in-the-mesohippocampal-dopamine-circuit-following-exposure-to-the-brominated-flame-retardant-hbcdd
#14
Camille Pham-Lake, Elizabeth B Aronoff, Chad R Camp, Aimee Vester, Sam J Peters, W Michael Caudle
Many chemicals have been used to increase the safety of consumer products by reducing their flammability and risk for ignition. Recent focus on brominated flame retardants, such as polybrominated diphenyl ethers (PBDEs) has shown them to contribute to neurobehavioral deficits in children, including learning and memory. As the manufacture and use of PBDEs have been reduced, replacement chemicals, such as hexabromocyclododecane (HBCDD) have been substituted. Our current study evaluated the neurotoxicity of HBCDD, concentrating on dopaminergic innervation to the hippocampus...
February 4, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28214745/rapid-detection-and-quantification-of-enterovirus-71-by-a-portable-surface-plasmon-resonance-biosensor
#15
Briliant Adhi Prabowo, Robert Y L Wang, Muhammad Khari Secario, Po-Ting Ou, Azharul Alom, Jia-Jung Liu, Kou-Chen Liu
This study presents the first report on a label-free detection and rapid quantification method for human enterovirus 71 (EV71) using a portable surface plasmon resonance (SPR) system. The SPR sensor instrument was configured to run on low power in a miniaturized platform to improve the device portability for a wider application both in laboratories and in the field. A color tunable organic light emitting diode in red spectrum was attached on a trapezoidal prism for the disposable light source module. The SPR signal processing using integration area under the reflectivity curve is applied for optimum signal to noise ratio (SNR) enhancement...
January 21, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28214660/enhancer-of-zeste-homologue-2-plays-an-important-role-in-neuroblastoma-cell-survival-independent-of-its-histone-methyltransferase-activity
#16
Laurel T Bate-Eya, Hinco J Gierman, Marli E Ebus, Jan Koster, Huib N Caron, Rogier Versteeg, M Emmy M Dolman, Jan J Molenaar
Neuroblastoma is predominantly characterised by chromosomal rearrangements. Next to V-Myc Avian Myelocytomatosis Viral Oncogene Neuroblastoma Derived Homolog (MYCN) amplification, chromosome 7 and 17q gains are frequently observed. We identified a neuroblastoma patient with a regional 7q36 gain, encompassing the enhancer of zeste homologue 2 (EZH2) gene. EZH2 is the histone methyltransferase of lysine 27 of histone H3 (H3K27me3) that forms the catalytic subunit of the polycomb repressive complex 2. H3K27me3 is commonly associated with the silencing of genes involved in cellular processes such as cell cycle regulation, cellular differentiation and cancer...
February 16, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28214651/a-review-on-the-evolution-of-pd-1-pd-l1-immunotherapy-for-bladder-cancer-the-future-is-now
#17
REVIEW
Joaquin Bellmunt, Thomas Powles, Nicholas J Vogelzang
The treatment of bladder cancer has evolved over time to encompass not only the traditional modalities of chemotherapy and surgery, but has been particularly impacted by the use of immunotherapy. The first immunotherapy was the live, attenuated bacterial Bacillus Calmette-Guérin vaccine, which has been the standard of care non-muscle-invasive bladder cancer since 1990. Modern immunotherapy has focused on inhibitors of checkpoint proteins, which are molecules that impede immune function, thereby allowing tumor cells to grow and proliferate unregulated...
February 2, 2017: Cancer Treatment Reviews
https://www.readbyqxmd.com/read/28214564/downregulation-of-gna13-erk-network-in-prefrontal-cortex-of-schizophrenia-brain-identified-by-combined-focused-and-targeted-quantitative-proteomics
#18
Mio Hirayama-Kurogi, Yohei Takizawa, Yasuto Kunii, Junya Matsumoto, Akira Wada, Mizuki Hino, Hiroyasu Akatsu, Yoshio Hashizume, Sakon Yamamoto, Takeshi Kondo, Shingo Ito, Masanori Tachikawa, Shin-Ichi Niwa, Hirooki Yabe, Tetsuya Terasaki, Mitsutoshi Setou, Sumio Ohtsuki
: Schizophrenia is a disabling mental illness associated with dysfunction of the prefrontal cortex, which affects cognition and emotion. The purpose of the present study was to identify altered molecular networks in the prefrontal cortex of schizophrenia patients by comparing protein expression levels in autopsied brains of patients and controls, using a combination of targeted and focused quantitative proteomics. We selected 125 molecules possibly related to schizophrenia for quantification by knowledge-based targeted proteomics...
February 15, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28214532/smn1-functions-as-a-novel-inhibitor-for-traf6-mediated-nf-%C3%AE%C2%BAb-signaling
#19
Eun Kyung Kim, Eui-Ju Choi
Survival motor neuron (SMN) is a 38-kDa protein, whose deficiency in humans develops spinal muscular atrophy (SMA), an autosomal recessive neurodegenerative disease with muscular atrophy due to motor neuron death in the spinal cord. We now report that SMN prevents the activation of TRAF6 and IκB kinase (IKK) and thereby negatively regulates the NF-κB signaling processes. SMN physically interacted with TRAF6 and with each component of the IKK complex, IKK-α, IKK-β, and IKK-γ in BV2 microglia cells. Moreover, SMN1 inhibited the E3 ubiquitin ligase activity of TRAF6 as well as the kinase activity of IKK...
February 15, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28214511/identification-of-a-degradation-signal-sequence-within-substrates-of-the-mitochondrial-i-aaa-protease
#20
Anthony J Rampello, Steven E Glynn
The i-AAA protease is a component of the mitochondrial quality control machinery that regulates respiration, mitochondrial dynamics, and protein import. The protease is required to select specific substrates for degradation from among the diverse complement of proteins present in mitochondria, yet the rules that govern this selection are unclear. Here, we reconstruct the yeast i-AAA protease, Yme1p, to examine the in vitro degradation of two intermembrane space chaperone subunits, Tim9 and Tim10. Yme1p degrades Tim10 more rapidly than Tim9 despite high sequence and structural similarity, and loss of Tim10 is accelerated by disruption of conserved disulfide bonds within the substrate...
February 15, 2017: Journal of Molecular Biology
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