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Yang Weiming W Department of Trauma-Emergency & Critical Care Medicine, Shanghai Fifth People's Hospital, Fudan University, Shanghai 200240, PR - - 2014
Interaction between host cells and invasive Candida plays a large role in the pathogenicity of Candida species. Fungal-induced endocytosis and active penetration are the two distinct, yet complementary invasion mechanisms of invasive candidiasis. Induced endocytosis is a microorganism-triggered, epithelial-driven, clathrin-mediated and actin-dependent process. During the fundamental pathological process of induced ...
Harrison Benjamin D BD Department of Genetics, Cell, and Developmental Biology, University of Minnesota-Twin Cities, Minneapolis, Minnesota, United States of - - 2014
Candida albicans, the most prevalent human fungal pathogen, is generally diploid. However, 50% of isolates that are resistant to fluconazole (FLC), the most widely used antifungal, are aneuploid and some aneuploidies can confer FLC resistance. To ask if FLC exposure causes or only selects for aneuploidy, we analyzed diploid strains ...
Tao Nengguo N School of Chemical Engineering, Xiangtan University, Xiangtan 411105, PR China. Electronic address: - - 2014
The chemical composition of Citrus reticulata Blanco essential oil was analysed using GC/MS. Monoterpene hydrocarbons (C10H16) constituted the majority (88.96%, w/w) of the total oil. The oils dose-dependently inhibited Penicillium italicum and Penicillium digitatum. The anti-fungal activity of the oils against P. italicum was attributed to citronellol, octanal, citral, decanal, ...
Oguro Yoshifumi - - 2013
An antifungal defensin, AFP1, of Brassica juncea inhibits the growth of various microorganisms. The molecular details of this inhibition remain largely unknown. Herein, we reveal that a specific structure of fungal sphingolipid glucosylceramide (GlcCer) is critical for the sensitivity of Candida albicans cells to AFP1. Our results revealed that AFP1 ...
Pemmaraju Suma C SC Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee 247 667, - - 2013
The current treatment options for Candida albicans biofilm-device related infections are very scarce due to their intrinsic increased tolerance to antimycotics. The aim of this work was to study synergistic action of terpenes (eugenol, menthol and thymol) with fluconazole (FLA) on C. albicans biofilm inhibition. The minimum inhibitory concentration (MIC) ...
Chakravarthi Balabhadrapatruni Vsk - - 2013
Taxol (generic name paclitaxel), a plant-derived antineoplastic agent, used widely against breast, ovarian and lung cancer, was originally isolated from the bark of the Pacific yew, Taxus brevifolia. The limited supply of the drug has prompted efforts to find alternative sources, such as chemical synthesis, tissue and cell cultures of ...
Zorić Nataša - - 2013
Hydroxytyrosol (HT) is a potent antioxidant found in olive oil and leaves. Using several in vitro approaches, we tested antifungal activity of HT. HT showed broad spectrum of antifungal activity against medically important yeasts and dermatophyte strains with MIC values ranging between 97.6 μgml-1 and 6.25 mgml-1. The antimicrobial activity ...
Roy René M RM Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792, United - - 2013
Human exposure to fungi results in a wide range of health outcomes, from invasive disease or allergy to immune tolerance. Inhaled fungi contact airway epithelial cells as an early event, and this host:fungal interaction can shape the eventual immunological outcome. Emerging evidence points to exposure to fungal cell wall carbohydrates ...
Carrillo-Muñoz Alfonso Javier - - 2013
Sertaconazole is a useful antifungal agent against mycoses of the skin and mucosa, such as cutaneous, genital and oral candidiasis and tinea pedis. Its antifungal activity is due to inhibition of the ergosterol biosynthesis and disruption of the cell wall. At higher concentrations, sertaconazole is able to bind to nonsterol ...
Kaneko Yukihiro - - 2013
To understand the process of Candida biofilm development and the effects of antifungal agents on biofilms, we analyzed real-time data comprising time-lapse images taken at times separated by brief intervals. The growth rate was calculated by measuring the change of biofilm thickness every hour. For the antifungal study, 5-h-old biofilms ...
You Jianlan J Natural Products Discovery Group, Institute for Natural Products Applications and Research Technologies, Stephenson Life Sciences Research Center, 101 Stephenson Parkway, University of Oklahoma, Norman, OK 73019-5251, - - 2013
A new class of fungal biofilm inhibitors represented by shearinines D (3) and E (4) were obtained from a Penicillium sp. isolate. The inhibitory activities of 3 and 4 were characterized using a new imaging flow-cytometer technique, which enabled the rapid phenotypic analysis of Candida albicans cell types (budding yeast ...
Ullah Azmat - - 2013
Candida glabrata is an opportunistic fungal pathogen which is a growing concern for immunocompromised patients. It is ranked as second most common cause of candidiasis after Candida albicans. For pathogenic yeasts, intracellular pH (pHi) has been implicated in proliferation, dimorphic switching and virulence. We expressed the pH-sensitive green fluorescent protein ...
Alves Lívia Araújo - - 2013
Abstract Objective: To evaluate the anti-fungal activity of a tincture from Schinus terebinthifolius (Brazilian pepper tree) on Candida albicans (ATCC 289065), a micro-organism associated with fungal infections of the oral cavity. Materials and methods: Minimum Inhibitory Concentration (MIC) and Minimum Fungicidal Concentration (MFC) were determined through microdilution technique, as well ...
Lopes Graciliana - - 2013
In the last few decades, fungal infections, particularly nosocomial, increased all around the world. This increment stimulated the search for new antifungal agents, especially those derived from nature. Among natural products, those from marine sources have gained prominence in the last years. Purified phlorotannins extracts from three brown seaweeds (Cystoseira ...
De Brucker Katrijn - - 2013
This study demonstrates a role for superoxide dismutases (Sods) in governing tolerance of Candida albicans biofilms to amphotericin B (AmB). Coincubation of C. albicans biofilms with AmB and the Sod inhibitors N,N'-diethyldithiocarbamate (DDC) or ammonium tetrathiomolybdate (ATM) resulted in reduced viable biofilm cells and increased intracellular reactive oxygen species levels ...
Tada Rui - - 2012
Being external, the fungal cell wall plays a crucial role in the fungal life. By covering the underneath cell, it offers mechanical strength and acts as a barrier, thus protecting the fungus from the hostile environment. Chemically, this cell wall is composed of different polysaccharides. Because of their specific composition, ...
Moussa Shaaban H - - 2012
Chitosan is a precious biological polysaccharide that could be applied in several fields. Fluorescein isothiocyanate-labeled chitosan (FITC-CTS) was synthesized as a macromolecular fluorophore, added to fungal chitosan from Aspergillus niger, to investigate the interaction mechanism and antibacterial performance of (FITC-CTS) against Escherichia coli and Micrococcus leteus. Fluorescence imaging was used ...
De Cock Liesbeth J - - 2012
Here we present a facile method to fabricate microporous hydrogel scaffolds that can be functionalized with a chemokine gradient. These scaffolds allow studying cellular responses in a 3D environment.
Tang Bo - - 2012
Alpinetin is a type of novel plant flavonoid derived from Alpinia katsumadai Hayata, found to possess strong anti-hepatoma effects. However, the detailed antitumor mechanism of alpinetin remains unclear. Mitogen-activated protein kinase kinase-7 (MKK7) can regulate cellular growth, differentiation and apoptosis. The aim of this study was to investigate the role ...
Liyan Wang - - 2011
Background/Aims: The aim of this study was to investigate the effect of expression of siRNA β- catenin silent gene on cell cycle and apoptosis of different hepatoma cells. Methodology: The effect of the β-catenin-siRNA recombinant plasmid on the growth of different hepatoma cells was observed by MTT assays; and the ...
Ozkan Aysun - - 2011
The antioxidant and anticancer properties of a medicinal plant, Romulea tempskyana (R. tempskyana) (Iridaceae) were investigated. The fresh corm water extract of R. tempskyana significantly increased cell viability against H(2)O(2) cytotoxicity(.) The extract also showed high inhibition of the lipid peroxidation activity (78.20%), reducing power (IC(50) 64.99 µg mL(-1)) activity and hydroxyl ...
Xie Jieming - - 2012
We extracted cucurmosin (CUS) from the sarcocarp of Cucrubita moschata (pumpkin). Recently, a number of studies have indicated that CUS has cytotoxic properties and induces apoptosis in a number of human tumor cells. However, the detailed mechanisms are largely unknown. The aim of this study was to confirm CUS's anticancer ...
Gong Lei - - 2011
Hexokinase II is a key enzyme in the glycolytic pathway and CD133+ human hepatoma cells possess cancer stem cell-like properties. The expression and enzyme activity of hexokinase II in CD133+ and CD133- hepatoma cells were examined. CD133 on the surface of the hepatoma BEL-7402 cells was analyzed by flow cytometry ...
Huang Chin-Shiu - - 2011
The combination of anti-cancer drugs with nutritional factors is a potential strategy for improving the efficacy of chemotherapy, particularly for hepatocellular carcinoma because its conventional therapies are mostly ineffective. Using a highly invasive hepatoma SK-Hep-1 cell line, we investigated the possible synergistic anti-metastatic efficacy of a combination of sorafenib (SF), ...
Okamoto Kyoko - - 2011
Geranylgeranoic acid (GGA) is a natural polyprenoic acid derivatives of which have been shown to prevent second primary hepatoma. GGA induces mitochondriamediated programmed cell death (PCD), which may be relevant to cancer prevention. To gain further insights into GGA-induced PCD, autophagy processes were examined in human hepatoma-derived HuH-7 cells. Treatment ...
Chiu Yung-Wei - - 2011
Flavonoids have been demonstrated to exert health benefits in humans. We investigated whether the flavonoid baicalein would inhibit the adhesion, migration, invasion, and growth of human hepatoma cell lines, and we also investigated its mechanism of action. The separate effects of baicalein and baicalin on the viability of HA22T/VGH and ...
Piwko Wojciech - - 2011
Comment on: Piwko W, et al. EMBO J 2010; 29:4210-22, Duro E, et al. Mol Cell 2010; 40:632-44, O'Connell BC, et al. Mol Cell 2010; 40:645-57 and O'Donnell L, et al. Mol Cell 2010; 40:619-31.
Ruggiero Eliana - - 2011
Human immunodeficiency virus (HIV) starts to replicate upon virus-cell fusion mediated by the CD4-Env-coreceptor interaction. HIV enters target cells also through endocytosis, a mechanism which rarely leads to HIV replication. Both modes of entry are greatly improved by cell-cell contact. We recently reported that the contact of human primary dendritic ...
Bouvier Thierry - - 2011
Culture studies of phage-host systems have shown that phage proliferation strongly depends on the physiological state of the host, but it is still unclear to what extent this holds true within aquatic ecosystems. We used a combination of flow sorting and electron microscopy to explore how the frequency of bacterial ...
Del Portillo Armando - - 2011
During cell-to-cell transmission of human immunodeficiency virus type 1 (HIV-1), many viral particles can be simultaneously transferred from infected to uninfected CD4 T cells through structures called virological synapses (VS). Here we directly examine how cell-free and cell-to-cell infections differ from infections initiated with cell-free virus in the number of ...
Yang Seung Won - - 2011
Cell-penetrating peptides (CPPs), including TAT-CPP, have been used to deliver exogenous proteins into living cells. Although a number of proteins fused to TAT-CPP can be delivered into various cells, little is known about the proteolytic cleavage of TAT-fusion proteins in cells. In this study, we demonstrate that a small heat ...
Kaulitz Danny - - 2011
Porcine endogenous retroviruses (PERV) represent a risk for xenotransplantation using pig cells, tissues or organs. PERV-A and PERV-B are present in the genome of all pigs and both infect human cells in vitro. PERV-C infects only pig cells and it is integrated in the genome of most, but not all ...
Lee Jooeun - - 2011
BACKGROUND: The purpose of this study was to establish an ex vivo model of coxsackievirus infection since there seems to be no suitable disease model currently. METHODS: Human conjunctival epithelial cells (HCECs) were cultured for 2 weeks in a serum-free air-liquid interface system to produce a multilayered structure. The cells were ...
McLean Jeffrey E - - 2011
Flaviviruses include the most prevalent and medically challenging viruses. Persistent infection with flaviviruses of epithelial cells and hepatocytes that do not undergo cell death is common. Here, we report that, in epithelial cells, up-regulation of autophagy following flavivirus infection markedly enhances virus replication and that one flavivirus gene, NS4A, uniquely ...
Kobayashi Miho - - 2011
This study investigated the proteoglycan (PG)-dependent mechanism of Chlamydophila pneumoniae attachment to lymphocytic cells. Lymphoid Jurkat cells and epithelial HEp-2 cells were statically infected with C. pneumoniae (TW183). Transmission electron microscopy and assessment of inclusion-forming units indicated that the bacteria grew normally in Jurkat cells and were capable of producing secondary ...
Capalbo Gianni - - 2011
Moesin is a member of the ERM (ezrin, radixin, moesin) family of cytoskeleton / membrane structure organizing and signal transduction proteins. Previously, we found an increased expression of moesin during HIV-1 infection. Moesin was also reported to be incorporated into HIV-1 virions. In order to analyze whether moesin is a ...
Xenopoulos Panagiotis - - 2011
During spore formation, Bacillus subtilis divides asymmetrically, resulting in two cells with different fates. Immediately after division, the transcription factor σ(F) becomes active in the smaller prespore, followed by activation of σ(E) in the larger mother cell. We recently showed that a delay in σ(E) activation resulted in the novel ...
Nomaguchi Masako - - 2011
Evaluation of: Belzile J-P, Abrahamyan LG, Gerard FCA et al.: Formation of mobile chromatin-associated nuclear foci containing HIV-1 Vpr and VPRBP is critical for the induction of G2 cell cycle arrest. PLoS Pathog. 6(9), E1001080 (2010). All primate immunodeficiency viruses encode a unique set of accessory proteins to optimize their ...
Herzberg M C - - 2011
The AIDS pandemic continues. Little is understood about how HIV gains access to permissive cells across mucosal surfaces, yet such knowledge is crucial to the development of successful topical anti-HIV-1 agents and mucosal vaccines. HIV-1 rapidly internalizes and integrates into the mucosal keratinocyte genome, and integrated copies of HIV-1 persist ...
Ma Emilie - - 2011
Ribonucleotide reductase (RNR) catalyzes the reduction of ribonucleotides to deoxyribonucleotides and thereby provides the precursors required for DNA synthesis and repair. In an attempt to test cell resistance to a permanent replicational stress, we constructed a mutant Saccharomyces cerevisiae strain containing exclusively nonrecyclable catalytic subunits of RNR that become inactivated ...
Avinoam Ori O Department of Biology, Technion-Israel Institute of Technology, Haifa 32000, - - 2011
Caenorhabditis elegans proteins AFF-1 and EFF-1 [C. elegans fusion family (CeFF) proteins] are essential for developmental cell-to-cell fusion and can merge insect cells. To study the structure and function of AFF-1, we constructed vesicular stomatitis virus (VSV) displaying AFF-1 on the viral envelope, substituting the native fusogen VSV glycoprotein. Electron ...
Lai Weihong - - 2011
HIV-1 envelope glycoproteins are the key viral proteins that mediate HIV-1 entry and cell-cell fusion. In contrast to HIV-1 entry, the mechanism of HIV-1 Env-mediated cell-cell fusion is relatively unclear. This study demonstrated that dynasore, a dynamin inhibitor, suppressed HIV-1 Env-mediated cell-cell fusion. Dynasore sensitivity of HIV-1 Env-mediated cell-cell fusion ...
Alberter Barbara - - 2011
Herpesviruses establish latency in suitable host cells after primary infection and persist in their host organisms for life. Most of the viral genes are silenced during latency, also enabling the virus to escape from an immune response. This study addresses the control of viral gene silencing by epigenetic mechanisms, using ...
Dauber Bianca - - 2011
The herpes simplex virus 1 (HSV-1) virion host shutoff protein (vhs) degrades viral and cellular mRNAs. Here, we demonstrate for the first time that vhs also boosts translation of viral true late mRNAs in a cell type-dependent manner and that this effect determines the viral growth phenotype in the respective ...
Simmons Graham G Blood Systems Research Institute and Department of Laboratory Medicine, University of California, San Francisco, CA, USA. - - 2011
Severe acute respiratory syndrome coronavirus (SARS-CoV) poses a considerable threat to human health. Activation of the viral spike (S)-protein by host cell proteases is essential for viral infectivity. However, the cleavage sites in SARS-S and the protease(s) activating SARS-S are incompletely defined. We found that R667 was dispensable for SARS-S-driven ...
Minocha Neha - - 2011
Trypanosomatids are typified by uniquely configured mitochondrial DNA-the kinetoplast. The replication timing of kinetoplast DNA (kDNA) is closely linked to nuclear S phase, but nuclear and kinetoplast compartments display staggered timing of segregation, post-replication. Kinetoplast division is completed before nuclear division in Trypanosoma species while nuclear division is completed first ...
Tyson John J - - 2011
The oscillating activity of a single CDK-cyclin fusion protein can drive the orderly progression of yeast cells through DNA replication, mitosis and cell division.
Jennings Michael P MP Institute for Glycomics, Griffith University, Gold Coast Campus, - - 2011
Expression of type IV pili by Neisseria gonorrhoeae plays a critical role in mediating adherence to human epithelial cells. Gonococcal pilin is modified with an O-linked glycan, which may be present as a di- or monosaccharide because of phase variation of select pilin glycosylation genes. It is accepted that bacterial ...
Lee Seungrag - - 2011
We present the real-time quantitative analysis of Vibrio vulnificus-infected host cells using quantitative phase microscopy (QPM) based on interferometric techniques. This provides the ability to retrieve the phase or optical path-length distribution over the cell with nanometer path-length sensitivity from a single interferogram image. We have used QPM to study ...
Lee Doseung - - 2011
Methylelaiophylin isolated from Streptomyces melanosporofaciens was selected as an alpha-glucosidase inhibitor with an IC50 value of 10 micrometer. It showed mixedtype inhibition of alpha-glucosidase with a Ki value of 5.94 micrometer. In addition, methylelaiophylin inhibited the intracellular trafficking of hemagglutinin-neuramidase (HN), a glycoprotein of Newcastle disease virus (NDV), in baby ...
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