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https://www.readbyqxmd.com/read/28821879/musashi-1-enhances-glioblastoma-cell-migration-and-cytoskeletal-dynamics-through-translational-inhibition-of-tensin3
#1
Hsiao-Yun Chen, Liang-Ting Lin, Mong-Lien Wang, Benoit Laurent, Chih-Hung Hsu, Chih-Ming Pan, Wan-Ru Jiang, Pau-Yuan Chen, Hsin-I Ma, Yi-Wei Chen, Pin-I Huang, Arthur Chiou, Shih-Hwa Chiou
The RNA-binding protein Musashi-1 (MSI1) exerts essential roles in multiple cellular functions, such as maintenance of self-renewal and pluripotency of stem cells. MSI1 overexpression has been observed in several tumor tissues, including glioblastoma (GBM), and is considered as a well-established marker for tumor metastasis and recurrence. However, the molecular mechanisms by which MSI1 regulates cell migration are still undetermined. Here we reported that MSI1 alters cell morphology, promotes cell migration, and increases viscoelasticity of GBM cells...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28821666/gabaergic-interneuron-differentiation-in-the-basal-forebrain-is-mediated-through-direct-regulation-of-glutamic-acid-decarboxylase-isoforms-by-dlx-homeobox-transcription-factors
#2
Trung N Le, Qing-Ping Zhou, Inma Cobos, Shunzhen Zhang, Jamie Zagozewski, Sara Japoni, Jerry Vriend, Tracie Parkinson, Guoyan Du, John L Rubenstein, David D Eisenstat
γ-amino butyric acid (GABA) is the key inhibitory neurotransmitter in the cortex but regulation of its synthesis during forebrain development is poorly understood. In the telencephalon, members of the distal-less (Dlx) homeobox gene family are expressed in, and regulate the development of, the basal ganglia primodia from which many GABAergic neurons originate and migrate to other forebrain regions. The Dlx1/Dlx2 double knockout mice die at birth with abnormal cortical development, including loss of tangential migration of GABAergic inhibitory interneurons to the neocortex (Anderson et al...
August 8, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28821490/serca-directs-cell-migration-and-branching-across-species-and-germ-layers
#3
Danielle V Bower, Nick Lansdale, Sonia Navarro, Thai V Truong, Dan J Bower, Neil C Featherstone, Marilyn G Connell, Denise Al-Alam, Mark R Frey, Le A Trinh, G Esteban Fernandez, David Warburton, Scott E Fraser, Daimark Bennett, Edwin C Jesudason
Branching morphogenesis underlies organogenesis in vertebrates and invertebrates, yet is incompletely understood. Here, we show that the sarco-endoplasmic reticulum Ca(2+) reuptake pump (SERCA) directs budding across germ layers and species. Clonal knockdown demonstrated a cell-autonomous role for SERCA in Drosophila air sac budding. Live imaging of Drosophila tracheogenesis revealed elevated Ca(2+) levels in migratory tip cells as they form branches. SERCA blockade abolished this Ca(2+) differential, aborting both cell migration and new branching...
August 17, 2017: Biology Open
https://www.readbyqxmd.com/read/28820573/magnetically-aligned-co-c-mwcnts-composite-derived-from-mwcnts-interconnected-zeolitic-imidazolate-frameworks-for-lightweight-and-highly-efficient-electromagnetic-wave-absorber
#4
Yichao Yin, Xiaofang Liu, Xiaojun Wei, Ya Li, Xiaoyu Nie, Ronghai Yu, Jianglan Shui
Developing lightweight and highly efficient electromagnetic wave (EMW) absorbing materials is crucial but challenging for anti-electromagnetic irradiation and interference. Herein, we used MWCNTs as templates for growth of Co-based zeolitic imidazolate frameworks (ZIFs), and obtained Co-C/MWCNTs composite by post pyrolysis. The MWCNTs interconnected the ZIF-derived Co-C porous particles, constructing a conductive network for electron hopping and migration. Moreover, the Co-C/MWCNTs composite was aligned in paraffin matrix under an external magnetic field, which led to the stretch of MWCNTs along the magnetic field direction...
August 18, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28819671/fullerenol-nanoparticles-suppress-rankl-induced-osteoclastogenesis-by-inhibiting-differentiation-and-maturation
#5
Huan Geng, Ya-Nan Chang, Xue Bai, Shuitao Liu, Qing Yuan, Weihong Gu, Juan Li, Kui Chen, Gengyan Xing, Gengmei Xing
Bone health requires regulation of homeostatic equilibrium between osteoblasts and osteoclasts. The over-activation of osteoclasts can disrupt bone metabolism, resulting in osteoporosis and other bone-loss diseases. Fullerenol, a polyhydroxy derivative of fullerene, exhibits excellent biocompatibility. Here we show that fullerenol nanoparticles exert two functions: inhibition of osteoclastic differentiation and blockage of pre-osteoclast fusion to restructure osteoclast maturation and function. Experimentally, the nanoparticles reduced pre-osteoclast migration and inhibited ruffled border formation to block their maturation...
August 18, 2017: Nanoscale
https://www.readbyqxmd.com/read/28819343/mid-term-migration-of-a-cementless-porous-acetabular-cup-a-5%C3%A2-year-radiostereometric-analysis
#6
Kjell G Nilsson, Annika Theodoulou, Graham Mercer, Stephen J Quinn, Jeganath Krishnan
PURPOSE: The aim of the study was to determine the 5 year migratory and wear patterns, adverse events and clinical outcomes of a cementless, porous acetabular cup. METHODS: RSA imaging of a cohort of 11 patients was retrospective analysed at 5 years post Total Hip Arthroplasty (THA). Changes in pain, function and symptoms of the hip at 5 years post-THA were compared to preoperative and 2 year postoperative assessments on the Harris Hip Score (HHS) and Hip dysfunction and Osteoarthritis Outcome Score (HOOS)...
December 2017: Journal of Orthopaedics
https://www.readbyqxmd.com/read/28819208/extrinsic-mechanical-forces-mediate-retrograde-axon-extension-in-a-developing-neuronal-circuit
#7
M A Breau, I Bonnet, J Stoufflet, J Xie, S De Castro, S Schneider-Maunoury
To form functional neural circuits, neurons migrate to their final destination and extend axons towards their targets. Whether and how these two processes are coordinated in vivo remains elusive. We use the zebrafish olfactory placode as a system to address the underlying mechanisms. Quantitative live imaging uncovers a choreography of directed cell movements that shapes the placode neuronal cluster: convergence of cells towards the centre of the placodal domain and lateral cell movements away from the brain...
August 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/28819198/regulation-of-ccr7-dependent-cell-migration-through%C3%A2-ccr7-homodimer-formation
#8
Daichi Kobayashi, Masataka Endo, Hirotaka Ochi, Hironobu Hojo, Masayuki Miyasaka, Haruko Hayasaka
The chemokine receptor CCR7 contributes to various physiological and pathological processes including T cell maturation, T cell migration from the blood into secondary lymphoid tissues, and tumor cell metastasis to lymph nodes. Although a previous study suggested that the efficacy of CCR7 ligand-dependent T cell migration correlates with CCR7 homo- and heterodimer formation, the exact extent of contribution of the CCR7 dimerization remains unclear. Here, by inducing or disrupting CCR7 dimers, we demonstrated a direct contribution of CCR7 homodimerization to CCR7-dependent cell migration and signaling...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28818948/vinculin-forms-a-directionally-asymmetric-catch-bond-with-f-actin
#9
Derek L Huang, Nicolas A Bax, Craig D Buckley, William I Weis, Alexander R Dunn
Vinculin is an actin-binding protein thought to reinforce cell-cell and cell-matrix adhesions. However, how mechanical load affects the vinculin-F-actin bond is unclear. Using a single-molecule optical trap assay, we found that vinculin forms a force-dependent catch bond with F-actin through its tail domain, but with lifetimes that depend strongly on the direction of the applied force. Force toward the pointed (-) end of the actin filament resulted in a bond that was maximally stable at 8 piconewtons, with a mean lifetime (12 seconds) 10 times as long as the mean lifetime when force was applied toward the barbed (+) end...
August 18, 2017: Science
https://www.readbyqxmd.com/read/28818100/mir-140-5p-suppresses-the-proliferation-migration-and-invasion-of-gastric-cancer-by-regulating-yes1
#10
Zheng Fang, Shuai Yin, Ruochuan Sun, Shangxin Zhang, Min Fu, Youliang Wu, Tao Zhang, Junaid Khaliq, Yongxiang Li
BACKGROUND: The aberrant expression of microRNA-140-5p (miR-140-5p) has been described in gastric cancer (GC). However, the role of miR-140-5p in GC remains unclear. In this study, the prognostic relevance of miR-140-5p in GC was investigated and YES1 was identified as a novel target of miR-140-5p in regulating tumor progression. METHODS: miR-140-5p level was determined in 20 paired frozen specimens through quantitative real-time PCR, and analyzed in tissue microarrays through in situ hybridization...
August 17, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/28818073/role-of-the-lncrna-abhd11-as1-in-the-tumorigenesis-and-progression-of-epithelial-ovarian-cancer-through-targeted-regulation-of-rhoc
#11
Dan-Dan Wu, Xi Chen, Kai-Xuan Sun, Li-Li Wang, Shuo Chen, Yang Zhao
BACKGROUND: There is increasing evidence in support of the role of lncRNAs in tumor cell proliferation, differentiation and apoptosis. METHODS: We examined the expression of the lncRNA ABHD11-AS1 in epithelial ovarian cancer (EOC) tissues and normal ovarian tissues by real-time quantitative PCR (qRT-PCR). After inducing ABHD11-AS1 downregulation by small interfering RNA (siRNA) or ABHD11-AS1 overexpression by plasmid transfection, we examined the EOC cell phenotypes and expression of related molecules...
August 17, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/28817830/microrna-200a-inhibits-transforming-growth-factor-%C3%AE-1-induced-proximal-tubular-epithelial-mesenchymal-transition-by-targeting-%C3%AE-catenin
#12
Yi Gong, Zhexue Qin, Baoshang Zhou, Hua Chen, Zhengmin Shi, Jing Zhang
BACKGROUND: The epithelial-mesenchymal transition (EMT) is a crucial event in the development of renal interstitial fibrosis (RIF). A growing body of evidence indicates that β-catenin plays an important role in various types of fibrosis. Although members of the microRNA (miRNA)-200 family have been suggested to suppress EMT in cancer and fibrosis, the function of miRNA-200a in regulating the progression of RIF is unknown. We speculate that miRNA-200a may hinder this progression through the suppression of β-catenin...
August 18, 2017: Nephron
https://www.readbyqxmd.com/read/28817810/tgf-%C3%AE-1-is-involved-in-vitamin-d-induced-chondrogenic-differentiation-of-bone-marrow-derived-mesenchymal-stem-cells-by-regulating-the-erk-jnk-pathway
#13
Xiaorui Jiang, Botao Huang, Huiying Yang, Guishi Li, Chunlei Zhang, Guangshi Yang, Feng Lin, Guodong Lin
BACKGROUND/AIMS: Osteoarthritis (OA) is characterized by degradation of cartilage, sole cell type of which is chondrocytes. Bone marrow-derived mesenchymal stem cells (BMSCs) possess multipotency and can be directionally differentiated into chondrocytes under stimulation. This study was aimed to explore the possible roles of vitamin D and transforming growth factor-β1 (TGF-β1) in the chondrogenic differentiation of BMSCs. METHODS: BMSCs were isolated from femurs and tibias of rats and characterized by flow cytometry...
August 16, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28817802/molecular-memory-of-morphologies-by-septins-during-neuron-generation-allows-early-polarity-inheritance
#14
Leila Boubakar, Julien Falk, Hugo Ducuing, Karine Thoinet, Florie Reynaud, Edmund Derrington, Valérie Castellani
Transmission of polarity established early during cell lineage history is emerging as a key process guiding cell differentiation. Highly polarized neurons provide a fascinating model to study inheritance of polarity over cell generations and across morphological transitions. Neural crest cells (NCCs) migrate to the dorsal root ganglia to generate neurons directly or after cell divisions in situ. Using live imaging of vertebrate embryo slices, we found that bipolar NCC progenitors lose their polarity, retracting their processes to round for division, but generate neurons with bipolar morphology by emitting processes from the same locations as the progenitor...
August 16, 2017: Neuron
https://www.readbyqxmd.com/read/28817611/the-directed-migration-of-gonadal-distal-tip-cells-in-caenorhabditis-elegans-requires-ngat-1-a-%C3%A3-1-4-n-acetylgalactosaminyltransferase-enzyme
#15
Joseph Veyhl, Robert J Dunn, Wendy L Johnston, Alexa Bennett, Lijia W Zhang, James W Dennis, Harry Schachter, Joseph G Culotti
Glycoproteins such as growth factor receptors and extracellular matrix have well-known functions in development and cancer progression, however, the glycans at sites of modification are often heterogeneous molecular populations which makes their functional characterization challenging. Here we provide evidence for a specific, discrete, well-defined glycan modification and regulation of a stage-specific cell migration in Caenorhabditis elegans. We show that a chain-terminating, putative null mutation in the gene encoding a predicted β1,4-N-acetylgalactosaminyltransferase, named ngat-1, causes a maternally rescued temperature sensitive (ts) defect in the second phase of the three phase migration pattern of the posterior, but not the anterior, hermaphrodite Distal Tip Cell (DTC)...
2017: PloS One
https://www.readbyqxmd.com/read/28817310/semaphorins-and-their-roles-in-airway-biology-potential-as-therapeutic-targets
#16
Hesam Movassagh, Forough Khadem, Abdelilah S Gounni
Semaphorins are a large family of proteins originally identified as axon guidance cues which play a crucial role in neural development. They are also ubiquitously expressed beyond the nervous system and contribute to regulation of essential cell functions such as cell migration, proliferation, and adhesion. Binding of semaphorins to their receptors, including plexins and neuropilins, triggers diverse signaling pathways which are involved in the pathogenesis of various diseases from cancer to autoimmune and allergic disorders...
August 17, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28817157/extent-and-morbidity-of-lateralization-of-a-trochanteric-fixation-nail-blade
#17
Phillip A Sandifer, Robert M Hulick, Matthew L Graves, Clay A Spitler, George V Russell, Josie M Hydrick, LaRita C Jones, Patrick F Bergin
This study examined the incidence and risk factors associated with lateral helical blade migration and trochanteric pain with the trochanteric fixation nail. A retrospective review was performed of 141 cases of pertrochanteric femur fracture treated with a trochanteric fixation nail at a level I trauma center over a period of 42 months. Exclusion criteria included follow-up of less than 60 days, preexisting osteonecrosis of the femoral head, and prophylactic trochanteric fixation nail treatment. Patient demographics, operative findings, and radiographic findings were recorded...
August 17, 2017: Orthopedics
https://www.readbyqxmd.com/read/28817119/mir-1301-inhibits-hepatocellular-carcinoma-cell-migration-invasion-and-angiogenesis-by-decreasing-wnt-%C3%AE-catenin-signaling-through-targeting-bcl9
#18
Chao Yang, Yonghua Xu, Feng Cheng, Yuanchang Hu, Shikun Yang, Jianhua Rao, Xuehao Wang
Metastasis is the major cause of the poor prognosis of hepatocellular carcinoma (HCC), and increasing evidence supports the contribution of miRNAs to cancer progression. However, the exact relationship between the level of miR-1301 expression and HCC cell migration, invasion, and angiogenesis remains largely unknown. Quantitative PCR was used to evaluate the level of miR-1301 expression in HCC tissues and cell lines. Transwell and tube-formation assays were used to measure the effects of miR-1301 on HCC cell migration and invasion, and angiogenesis, respectively...
August 17, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28816391/cytoskeleton-and-nucleoskeleton-involvement-in-processes-of-cytomixis-in-plants
#19
REVIEW
E A Kravets, A I Yemets, Ya B Blume
Cytomixis, is a form of cell-to-cell nuclear migration that involves the interaction of dynamic cytoskeletal components with the nucleus through signalling systems and linker complexes. In cytomixis two known mechanisms can be involved: actomyosin and/or microtubules and their associated motors. Perinuclear actin anchors and determines the direction of nuclear movement. In microsporogenesis cytomixis is probably initiated by a cascade of signals that trigger prophase reorganization of nucleus and cytoskeleton, and is a result of cytoskeletal protein activation, as well as a weakening of mechanisms responsible for anchoring the nucleus...
August 17, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28816305/real-time-atomic-scale-observation-of-void-formation-and-anisotropic-growth-in-ii-vi-semiconducting-ribbons
#20
Xing Huang, Travis Jones, Hua Fan, Marc-Georg Willinger
Void formation in semiconductors is generally considered to be deteriorating. However, for some systems, void formation and evolution are beneficial and can be used for the fabrication of novel nanostructures. In either scenario, the understanding of void formation and evolution is of both scientific and technical high importance. Herein, using ZnS ribbons as an example, we report real-time observations of void formation and the kinetics of growth at the nano- and atomic scales upon heating. Direct imaging reveals that voids, created by a focused electron beam in wurtzite (WZ) ribbons, have a rectangular shape elongated along the <0001> direction...
August 17, 2017: Nanoscale
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