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Results 301 - 350 of 1952
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Fu Ci C Department of Biological Sciences, SUNY University at Buffalo, Buffalo, New York, United States of - - 2014
Intercellular communication of vegetative cells and their subsequent cell fusion is vital for different aspects of growth, fitness, and differentiation of filamentous fungi. Cell fusion between germinating spores is important for early colony establishment, while hyphal fusion in the mature colony facilitates the movement of resources and organelles throughout an ...
Keerthy Hosadurga K HK Laboratory of Chemical Biology, Department of Chemistry, Bangalore University, Bangalore, - - 2014
The anti-apoptotic protein Bcl-2 is a well-known and attractive therapeutic target for cancer. In the present study the solution-phase T3P-DMSO mediated efficient synthesis of 2-amino-chromene-3-carbonitriles from alcohols, malanonitrile and phenols is reported. These novel 2-amino-chromene-3-carbonitriles showed cytotoxicity in human acute myeloid leukemia (AML) cell lines. Compound 4g was found to ...
Raghunathan Vijay Krishna VK Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California Davis, Davis, CA, United States of - - 2014
The extracellular environment possesses a rich milieu of biophysical and biochemical signaling cues that are simultaneously integrated by cells and influence cellular phenotype. Yes-associated protein (YAP) and transcriptional co-activator with PDZ-binding motif (WWTR1; TAZ), two important signaling molecules of the Hippo pathway, have been recently implicated as nuclear relays of ...
Maynard Glynn Vivian GV Grains and Forestry Branch, Australian Government Department of Agriculture, Fisheries and Forestry, GPO Box 858 Canberra ACT Australia 2601. - - 2014
This paper provides a revision of Goniocolletes Cockerell, and of Australian subgenera of Leioproctus Smith (Hy-menoptera: Colletidae: Paracolletini) with three submarginal cells. Seven subgenera were revised: Leioproctus s.str., L. (Ceratocolletes) Michener, L. (Cladocerapis) Cockerell, L. (Excolletes) Michener, L. (Lamprocolletes) Smith, L. (Odontocolletes) Maynard, and L. (Protomorpha) Rayment, and seven new ...
Sinclair Robert R Mathematical Biology Unit, Okinawa Institute of Science and Technology Onna-son, Okinawa, - - 2014
When a given tissue must, to be able to perform its various functions, consist of different cell types, each fairly evenly distributed and with specific probabilities, then there are at least two quite different developmental mechanisms which might achieve the desired result. Let us begin with the case of two ...
Bennett Robert D RD Laboratory of Adaptive and Regenerative Biology, Brigham and Women's Hospital, Harvard Medical School , Boston, MA , - - 2014
Complex tissues such as the lung are composed of structural hierarchies such as alveoli, alveolar ducts, and lobules. Some structural units, such as the alveolar duct, appear to participate in tissue repair as well as the development of bronchioalveolar carcinoma. Here, we demonstrate an approach to conduct laser microdissection of ...
Burton Rachel A RA Australian Research Council Centre of Excellence in Plant Cell Walls - School of Agriculture, Food and Wine, University of Adelaide Glen Osmond, SA, - - 2014
The composition of cell walls in cereal grains and other grass species differs markedly from walls in seeds of other plants. In the maternal tissues that surround the embryo and endosperm of the grain, walls contain higher levels of cellulose and in many cases are heavily lignified. This may be ...
Sands Bryan B Division of Basic Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of - - 2014
Study of signal transduction in live cells benefits from the ability to visualize and quantify light emitted by fluorescent proteins (XFPs) fused to different signaling proteins. However, because cell signaling proteins are often present in small numbers, and because the XFPs themselves are poor fluorophores, the amount of emitted light, ...
Enenkel Cordula C Department of Biochemistry, University of Toronto, Medical Sciences Building, 1 King's College Circle, Toronto, ON M5S 1A8, Canada. - - 2014
Proteasomes are conserved protease complexes enriched in the nuclei of dividing yeast cells, a major site for protein degradation. If yeast cells do not proliferate and transit to quiescence, metabolic changes result in the dissociation of proteasomes into proteolytic core and regulatory complexes and their sequestration into motile cytosolic proteasome ...
Gaglia Giorgio G Department of Systems Biology, Harvard Medical School, Boston, MA, - - 2014
The dynamics of the tumor suppressor protein p53 have been previously investigated in single cells using fluorescently tagged p53. Such approach reports on the total abundance of p53 but does not provide a measure for functional p53. We used fluorescent protein-fragment complementation assay (PCA) to quantify in single cells the ...
Ji Hong H La Trobe Institute for Molecular Science (LIMS), La Trobe University, Melbourne, Victoria, - - 2014
Secreted microRNAs (miRNAs) enclosed within extracellular vesicles (EVs) play a pivotal role in intercellular communication by regulating recipient cell gene expression and affecting target cell function. Here, we report the isolation of three distinct EV subtypes from the human colon carcinoma cell line LIM1863 - shed microvesicles (sMVs) and two ...
Kaczmarczyk Agnieszka A Centre for Chromosome Biology, School of Natural Sciences, National University of Ireland, Galway, - - 2014
The CENP-W/T complex was previously reported to be required for mitosis. HeLa cells depleted of CENP-W displayed profound mitotic defects, with mitotic timing delay, disorganized prometaphases and multipolar spindles as major phenotypic consequences. In this study, we examined the process of multipolar spindle formation induced by CENP-W depletion. Depletion of ...
Cerrada Alejandro A Departmento de Bioquímica y Biología Molecular, Facultad de Biología, Universidad Complutense, Madrid, - - 2014
Lung alveolar type II (ATII) cells are specialized in the synthesis and secretion of pulmonary surfactant, a lipid-protein complex that reduces surface tension to minimize the work of breathing. Surfactant synthesis, assembly and secretion are closely regulated and its impairment is associated with severe respiratory disorders. At present, well-established ATII ...
Petti Carloalberto C Department of Horticulture, University of Kentucky Lexington, KY, - - 2014
In a screen for root hair morphogenesis mutants in Arabidopsis thaliana L. we identified a T-DNA insertion within a type III J-protein AtDjC17 caused altered root hair development and reduced hair length. Root hairs were observed to develop from trichoblast and atrichoblast cell files in both Atdjc17 and 35S::AtDJC17. Localization ...
Méjard Régis R Ian Wark Research Institute, University of South Australia, Mawson Lakes Campus, Mawson Lakes, South Australia, - - 2014
The objectives of this study were to establish an in-depth understanding of the signals induced by mammalian cells in surface plasmon resonance (SPR) sensing. To this end, two plasmonic structures with different propagation and penetration distances were used: conventional surface plasmon resonance and long-range surface plasmon resonance. Long-range SPR showed ...
Claycomb Kumiko I KI Department of Neuroscience, University of Connecticut Health - - 2014
The precise function of multi-nucleated microglia, called globoid cells, that are uniquely abundant in the central nervous system of globoid cell leukodystrophy (GLD) is unclear. This gap in knowledge has been hindered by the lack of an appropriate in vitro model for study. Herein, we describe a primary murine glial ...
Smith Alec S T AS NanoScience Technology Center, University of Central - - 2014
The development of more predictive and biologically relevant in vitro assays is predicated on the advancement of versatile cell culture systems which facilitate the functional assessment of the seeded cells. To that end, microscale cantilever technology offers a platform with which to measure the contractile functionality of a range of ...
Singh Deepika D Buchmann Institute for Molecular Life Sciences; Institute of Biochemistry II; Goethe University; Frankfurt (Main), - - 2014
Asymmetric cell divisions combine cell division with fate specification and one general model of how this is achieved was proposed already decades ago(1,2): During interphase, the cell polarity axis is specified, followed by orientation of the spindle along the polarity axis and segregation of fate determinants along the polarity axis ...
Jósvay Katalin K 1] Institute of Biochemistry, Biological Research Centre of the Hungarian Academy of Sciences, Szeged, Hungary [2] Institute of Pharmaceutical Analysis, Faculty of Pharmacy, University of Szeged, Szeged, - - 2014
The B6.Cg-Tg(Thy1-YFP)16Jrs/J transgenic mouse strain, widely used to study neuronal development and regeneration, expresses the yellow fluorescent protein (YFP) in the peripheral nerves and the central nervous system under the control of regulatory sequences of the Thy1 gene. The Thy1 (CD90) cell surface glycoprotein is present on many cell types ...
Newman Ehren L EL Center for Memory and Brain, Department of Psychological and Brain Sciences, Boston University, Boston, MA - - 2014
Theta rhythmic fluctuations in the hippocampal-entorhinal circuit are believed to reflect rapid transitions between modes of mnemonic processing. Specifically, activity at the trough and peak of CA1 pyramidal layer theta is thought to correspond to retrieval and encoding related processing, respectively. Spatially tuned "grid cells" in layers II and III ...
Shen Bang B Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, Missouri, - - 2014
Host cell invasion by Toxoplasma gondii and other apicomplexan parasites requires transmembrane adhesins that mediate binding to receptors on the substrate and host cell to facilitate motility and invasion. Rhomboid proteases (ROMs) are thought to cleave adhesins within their transmembrane segments, thus allowing the parasite to disengage from receptors and ...
Papiorek Sarah S Institute of Sensory Ecology, Department Biology, Heinrich-Heine University Düsseldorf, Düsseldorf, - - 2014
Flowers bear the function of filters supporting the attraction of pollinators as well as the deterrence of floral antagonists. The effect of epidermal cell shape on the visual display and tactile properties of flowers has been evaluated only recently. In this study we quantitatively measured epidermal cell shape, gloss and ...
Tripathi Utkarsh K UK Theriogenology Lab, Livestock Production Management, National Dairy Research Institute Karnal, - - 2014
Sub-fertility is one of the most common problems observed in crossbred males, but the etiology remains unknown in most of the cases. Although proteomic differences in the spermatozoa and seminal plasma between breeds have been investigated, the possible differences at the sperm precursor cells and supporting/nourishing cells have not been ...
Halliez Sophie S Institut National de la Recherche Agronomique, U892 Virologie et Immunologie Moléculaires Jouy-en-Josas, - - 2014
The deletion of the cellular form of the prion protein (PrP(C)) in mouse, goat, and cattle has no drastic phenotypic consequence. This stands in apparent contradiction with PrP(C) quasi-ubiquitous expression and conserved primary and tertiary structures in mammals, and its pivotal role in neurodegenerative diseases such as prion and Alzheimer's ...
Paulus Geraldine L C GL Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, - - 2014
A significant advantage of a graphene biosensor is that it inherently represents a continuum of independent and aligned sensor-units. We demonstrate a nanoscale version of a micro-physiometer - a device that measures cellular metabolic activity from the local acidification rate. Graphene functions as a matrix of independent pH sensors enabling ...
Ahlberg Sebastian S Department of Dermatology and Allergy, Charité-Universitätsmedizin Berlin, Berlin, - - 2014
PVP-capped silver nanoparticles with a diameter of the metallic core of 70 nm, a hydrodynamic diameter of 120 nm and a zeta potential of -20 mV were prepared and investigated with regard to their biological activity. This review summarizes the physicochemical properties (dissolution, protein adsorption, dispersability) of these nanoparticles and ...
Torrano Adriano A AA Department of Chemistry and Center for NanoScience (CeNS), University of Munich (LMU), Butenandtstrasse 5-13(E), 81377 Munich, - - 2014
Particle_in_Cell-3D is a powerful method to quantify the cellular uptake of nanoparticles. It combines the advantages of confocal fluorescence microscopy with fast and precise semi-automatic image analysis. In this work we present how this method was applied to investigate the impact of 310 nm silica nanoparticles on human vascular endothelial ...
Castillo Diaz Luis A LA School of Chemical Engineering and Analytical Science, The University of Manchester, Manchester, UK ; Manchester Institute of Biotechnology, The University of Manchester, Manchester, - - 2014
Biomaterials that provide three-dimensional support networks for the culture of cells are being developed for a wide range of tissue engineering applications including the regeneration of bone. This study explores the potential of the versatile ionic-complementary peptide, FEFEFKFK, for such a purpose as this peptide spontaneously self-assembles into β-sheet-rich fibres ...
Bremel Robert D RD EigenBio LLC , Madison, WI , - - 2014
Immunoglobulins are highly diverse protein sequences that are processed and presented to T-cells by B-cells and other antigen presenting cells. We examined a large dataset of immunoglobulin heavy chain variable regions (IGHV) to assess the diversity of T-cell exposed motifs (TCEMs). TCEM comprise those amino acids in a MHC-bound peptide, ...
Grubmüller Stephanie S Lehrstuhl für Biochemie, Technische Universität München Garching, - - 2014
Intracellular bacterial pathogens (IBPs) are dependent on various nutrients provided by the host cells. Different strategies may therefore be necessary to adapt the intracellular metabolism of IBPs to the host cells. The specific carbon sources, the catabolic pathways participating in their degradation, and the biosynthetic performances of IBPs are still ...
Kuehl Carole J CJ Department of Microbial Pathogenesis, Yale School of Medicine, Boyer Center for Molecular Medicine, New Haven, Connecticut, United States of - - 2014
Shigella flexneri is a human pathogen that triggers its own entry into intestinal cells and escapes primary vacuoles to gain access to the cytosolic compartment. As cytosolic and motile bacteria encounter the cell cortex, they spread from cell to cell through formation of membrane protrusions that resolve into secondary vacuoles ...
Harreither Eva E Department of Biotechnology, University of Natural Resources and Life Sciences, Muthgasse 18, 1190 Vienna, - - 2014
Oct4 is a transcription factor that plays a major role for the preservation of the pluripotent state in embryonic stem cells as well as for efficient reprogramming of somatic cells to induced pluripotent stem cells (iPSC) or other progenitors. Protein-based reprogramming methods mainly rely on the addition of a fused ...
Remacle Albert G AG Infectious and Inflammatory Disease Center, Sanford-Burnham Medical Research Institute, La Jolla, California, United States of - - 2014
Bacteroides fragilis causes the majority of Gram-negative anaerobic infections in the humans. The presence of a short, 6-kb, pathogenicity island in the genome is linked to enterotoxigenic B. fragilis (ETBF). The role of the enterotoxin in B. fragilis virulence, however, remains to be determined, as the majority of clinical isolates ...
Lewis Katherine J R KJ University of Colorado at - - 2013
Poly(ethylene glycol) (PEG) hydrogels represent a versatile material scaffold for culturing cells in two or three dimensions with the advantages of limited protein fouling and cytocompatible polymerization to enable cell encapsulation. By using light-based chemistries for gelation and for incorporating biomolecules into the network, dynamic niches can be created that ...
Sawa Hitoshi H Multicellular Organization Laboratory, National Institute of Genetics, 1111 Yata, Mishima, 411-8540 - - 2013
Wnt proteins are secreted lipid-modified glycoproteins that control many aspects of development in organisms ranging from sponges to vertebrates. Wnt proteins are also important regulators of C. elegans development, with functions in processes as diverse as cell fate specification, asymmetric cell division, cell migration and synapse formation. In this review, ...
Ohno Motofumi - - 2013
When resorbable hydroxyapatite (HA) granules, which are used as a bone supplement material, were treated in neutral 4% sodium fluoride (NaF) solution, formation of a reactant resembling calcium fluoride was observed on the surface of the granules. Immediate and slow release of fluoride from fluoridated HA (HA+F) granules was observed ...
Pithon Matheus Melo - - 2011
Sickle cell anemia is a common hereditary hematologic disease. It affects many systems and tissues in the body, including the mouth. Delayed tooth eruption, an uncommon degree of periodontitis, alterations in the cells of the tongue surface, hypomaturation and hypomineralization in enamel and dentin, pulp calcifications, hypercementosis, and bone alterations ...
Longo João Paulo F - - 2011
Photodynamic therapy (PDT) is a technique employed in the treatment of several superficial infections, such as caries. PDT uses a non-toxic drug termed photosensitizer (PS) followed by light irradiation. The cytotoxic effects of the therapy are related to the production of reactive species produced after light activation of a photosensitizer, ...
Moore Jonathan E JE Centre for Molecular Biosciences, University of Ulster, Coleraine, Northern Ireland. - - 2011
To investigate the effect of tear hyperosmolarity and signs of clinical ocular surface pathology on conjunctival goblet cell population. 111 participants were assessed using tear osmolarity (TO) measurements and a comprehensive selection of clinical ophthalmic tests. The resultant clinical database was assessed for evidence of patterns of composite increasing pathology. ...
Gregoire S - - 2011
Candida albicans and mutans streptococci are frequently detected in dental plaque biofilms from toddlers afflicted with early childhood caries. Glucosyltransferases (Gtfs) secreted by Streptococcus mutans bind to saliva-coated apatite (sHA) and to bacterial surfaces, synthesizing exopolymers in situ, which promote cell clustering and adherence to tooth enamel. We investigated the ...
Bai Shu-wei - - 2011
To assess whether the Pax6 gene is involved in the development of retinoblastoma. Three human retinoblastoma cell cultures were transfected with human Pax6 specific double-stranded, small interfering siRNA molecules RH-1 and RH-2. In addition, untreated control groups and negative control groups (CT groups) transfected with siRNA without homology to the ...
Reinoso Roberto - - 2011
To assess cell viability and cell cycle kinetics of the conjunctival epithelium and to identify intraepithelial lymphocyte (IEL) subsets in patients with evaporative-type dry eye disease (ev-DED) caused by meibomian gland dysfunction and in healthy subjects. The effect of topical treatment and correlations between clinical symptoms and signs and epithelial ...
Liu Feng - - 2012
The aim of this study is to explore the mechanism by which acrolein (ACR), a metabolite of cyclophosphamide (CP), induces immature Sertoli cell cytoskeletal changes. Sertoli cells obtained from rats were cultivated and treated with 50 and 100 μM ACR. XTT assays were performed to detect cell viability. Activities of superoxide ...
Pietzner Klaus - - 2011
In the past, treatment for malignant ascites focussed on symptomatic relief or treatment of the underlying disease. A promising option evolved with catumaxomab (Removab(®)) in 2009. Since catumaxomab is a bispecific, trifunctional antibody with mouse-rat origin, so far repeated treatment cycles were not an option due to the occurrence of ...
Lee Joon Kyoo - - 2011
KAI1 COOH-terminal interacting tetraspanin (KITENIN) has been found to act as a promoter of metastasis in murine models of colon cancer and squamous cell carcinoma (SCC). The suppression of tumor progression and metastasis of established colon cancer in mice was observed after intravenous delivery of small interfering RNA (siRNA) targeting ...
Messitt Timothy J TJ EpiVax, Inc., Providence, RI, - - 2011
Methods for identifying physiologically relevant T-cell epitopes are critically important for development of vaccines and the design of therapeutic proteins. As the number of proteins that are being evaluated for putative immunogenicity expands, rapid and accurate tools are in great demand. Several methods to identify T-cell epitopes have been developed, ...
Chan Leo L - - 2011
Cell phenotyping and cell cycle analysis are two commonly used assays in both clinical diagnosis and biomedical research. Cell phenotyping by identifying different biomarkers is essential for the diagnosis of hematologic malignancy, sub-classifying diseases, monitoring response to treatment, predicting prognosis, detecting rare cell populations and residual malignant cells. Cell cycle ...
Bibi Asima - - 2011
The thick ascending limb of Henle's loop (TALH) is normally exposed to variable and often very high osmotic stress and involves different mechanisms to counteract this stress. ER resident calcium binding proteins especially calreticulin (CALR) play an important role in different stress balance mechanisms. To investigate the role of CALR ...
Betjes Michiel G H - - 2011
Progressive loss of renal function is associated with a dysregulation of circulating T cells that may underlie their impaired T-cell immunity. Here we tested whether end-stage renal disease (ESRD)-related T-cell alterations are compatible with the concept of premature immunological aging. Younger patients (25-45 years old) with ESRD were found to ...
Rajendran Priya - - 2011
Abstract -  The prognosis of teeth replanted following avulsion is determined by the extra-alveolar time and storage medium used. This study was undertaken to determine the efficacy of an oral rehydration solution 'Ricetral', in retaining the vitality of periodontal ligament cells when used as a storage medium for avulsed teeth ...
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