Browsing Microbiology and Immunology by Title
Now showing items 70-89 of 109
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PI3K activation is associated with intracellular sodium/iodide symporter protein expression in breast cancer
(East Carolina University, 2007-07-25)Background: The sodium/iodide symporter (NIS) is a membrane glycoprotein mediating active iodide uptake in the thyroid gland and is the molecular basis for radioiodide imaging and therapeutic ablation of thyroid carcinomas. ... -
PKR Regulates B56 alpha-mediated BCL2 Phosphatase Activity in Acute Lymphoblastic Leukemia-derived REH Cells
(East Carolina University, 2009-12-19)Protein phosphatase 2A (PP2A) is a heterotrimer comprising catalytic, scaffold, and regulatory (B) subunits. There are at least 21 B subunit family members. Thus PP2A is actually a family of enzymes defined by which B ... -
PqsE Functions Independently of PqsR-Pseudomonas Quinolone Signal and Enhances the rhl Quorum-Sensing System
(East Carolina University, 2008-11)Pseudomonas aeruginosa is an opportunistic pathogen that causes both acute and chronic infections in immunocompromised individuals. This gram-negative bacterium produces a battery of virulence factors that allow it to ... -
Proapoptotic Activity and Chemosensitizing Effect of the Novel Akt Inhibitor (2S)-1-(1H-Indol-3-yl)-3-[5-(3-methyl-2H-indazol-5-yl)pyridin-3-yl]oxypropan2-amine (A443654) in T-Cell Acute Lymphoblastic Leukemia
(East Carolina University, 2008-09)Constitutively activated AKT kinase is a common feature of T-cell acute lymphoblastic leukemia (T-ALL). Here, we report that the novel AKT inhibitor (2S)-1-(1H-indol-3-yl)-3-[5-(3-methyl-2Hindazol-5-yl)pyridin-3-yl]oxypr ... -
Production of the Siderophore 2,3-Dihydroxybenzoic Acid Is Required for Wild-Type Growth of Brucella abortus in the Presence of Erythritol under Low-Iron Conditions In Vitro
(East Carolina University, 2003-05)Production of the siderophore 2,3-dihyroxybenzoic acid (2,3-DHBA) is required for the wild-type virulence of Brucella abortus in cattle. A possible explanation for this requirement was uncovered when it was determined that ... -
The Pseudomonas aeruginosa devB/SOL Homolog, pgl, Is a Member of the hex Regulon and Encodes 6-Phosphogluconolactonase
(East Carolina University, 2000-07)A cyclic version of the Entner-Doudoroff pathway is used by Pseudomonas aeruginosa to metabolize carbohydrates. Genes encoding the enzymes that catabolize intracellular glucose to pyruvate and glyceraldehyde 3- phosphate ... -
Pseudomonas aeruginosa PqsA Is an Anthranilate-Coenzyme A Ligase
(East Carolina University, 2008-02)Pseudomonas aeruginosa is an opportunistic human pathogen which relies on several intercellular signaling systems for optimum population density-dependent regulation of virulence genes. The Pseudomonas quinolone signal ... -
Pseudomonas aeruginosa relA Contributes to Virulence in Drosophila melanogaster
(East Carolina University, 2004-10)The stringent response is a mechanism by which bacteria adapt to nutritional deficiencies through the production of the guanine nucleotides ppGpp and pppGpp, produced by the RelA enzyme. We investigated the role of the ... -
The Pseudomonas Quinolone Signal Regulates rhl Quorum Sensing in Pseudomonas aeruginosa
(East Carolina University, 2000-05)The opportunistic pathogen Pseudomonas aeruginosa uses intercellular signals to control the density-dependent expression of many virulence factors. The las and rhl quorum-sensing systems function, respectively, through the ... -
The pseudorabies virus UL28 protein enters the nucleus after coexpression with the herpes simplex virus UL15 protein
(East Carolina University, 1997-12)Herpesvirus DNA is packaged into capsids in the nuclei of infected cells in a process requiring at least six viral proteins. Of the proteins required for encapsidation of viral DNA, UL15 and UL28 are the most conserved among ... -
Quinolone signaling in the cell-to-cell communication system of Pseudomonas aeruginosa
(East Carolina University, 1999-09-28)Numerous species of bacteria use an elegant regulatory mechanism known as quorum sensing to control the expression of specific genes in a cell-density dependent manner. In Gram-negative bacteria, quorum sensing ... -
Raf-Induced Vascular Endothelial Growth Factor Augments Kaposi's Sarcoma-Associated Herpesvirus Infection
(East Carolina University, 2004-12)Recombinant green fluorescent protein encoding Kaposi’s sarcoma-associated herpesvirus (rKSHV.152) infection of -estradiol stimulated human foreskin fibroblasts (HFF) or HFF/ B-Raf[FF]:ER (expressing a weaker form of ... -
Raman spectroscopy: the gateway into tomorrow's virology
(East Carolina University, 2006-06-28)In the molecular world, researchers act as detectives working hard to unravel the mysteries surrounding cells. One of the researchers' greatest tools in this endeavor has been Raman spectroscopy. Raman spectroscopy is a ... -
Raman tweezers provide the fingerprint of cells supporting the late stages of KSHV reactivation
(East Carolina University, 2009-08)Kaposi's sarcoma-associated herpesvirus (KSHV) has both latent and lytic phases of replication. The molecular switch that triggers a reactivation is still unclear. Cells from S phase of cell cycle provide apt conditions ... -
RecA and RadA Proteins of Brucella abortus Do Not Perform Overlapping Protective DNA Repair Functions following Oxidative Burst
(East Carolina University, 2006-07)Very little is known about the role of DNA repair networks in Brucella abortus and its role in pathogenesis. We investigated the roles of RecA protein, DNA repair, and SOS regulation in B. abortus. While recA mutants in ... -
The Redox-Sensitive Transcriptional Activator OxyR Regulates the Peroxide Response Regulon in the Obligate Anaerobe Bacteroides fragilis
(East Carolina University, 2000-09)The peroxide response-inducible genes ahpCF, dps, and katB in the obligate anaerobe Bacteroides fragilis are controlled by the redox-sensitive transcriptional activator OxyR. This is the first functional oxidative ... -
Regulation of KSHV replication by glycoprotein B: chronicles of a virus and its host
(East Carolina University, 2011)Kaposi's sarcoma-associated herpesvirus (KSHV), the causative agent of three cancers: Kaposi's sarcoma (KS), primary effusion lymphoma (PEL), and the plasmablastic form of multicentric Castleman disease (MCD), shares many ... -
The regulation of anthranilate synthesis for the production of pqs in pseudomonas aeruginosa
(East Carolina University, 2013)The ubiquitous bacterium P. aeruginosa is an important human pathogen that causes devastating infections in immunocompromised patients and chronic infections in cystic fibrosis patients. The ability of P. aeruginosa to ... -
Regulation of Bacteriodes fragilis katB mRNA by oxidative stress and carbon limitation.
(East Carolina University, 1997-11)Regulation of the katB catalase gene in the anaerobic bacterium Bacteroides fragilis was studied. Northern blot hybridization analyses revealed that katB was transcribed as an approximately 1.6-kb monocistronic mRNA. The ... -
Regulation of Pseudomonas Quinolone Signal Synthesis in Pseudomonas aeruginosa
(East Carolina University, 2005-07)Pseudomonas aeruginosa is an opportunistic pathogen that causes chronic lung infections in cystic fibrosis patients and is a major source of nosocomial infections. This bacterium controls many virulence factors by using ...