BACKGROUND: Reactive oxygen species, such as superoxide (O(2)(-)), are involved in the abnormal growth of various cell types. Angiotensin II (Ang II) is one of the most potent inducers of oxidative stress in the vasculature. The molecular events involved in Ang II-induced proliferation of vascular smooth muscle cells (VSMCs) are ... More
Efficacy of acetaminophen in skin B16-F0 melanoma tumor-bearing C57BL/6 mice.
AuthorsVad NM, Kudugunti SK, Graber D, Bailey N, Srivenugopal K, Moridani MY
JournalInt J Oncol
PubMed ID19513568
'Previously, we reported that acetaminophen (APAP) showed selective toxicity towards melanoma cell lines. In the current study, we investigated further the role of tyrosinase in APAP toxicity in SK-MEL-28 melanoma cells in the presence of a short hairpin RNA (shRNA) plasmid, silencing tyrosinase gene. Results from tyrosinase shRNA experiments showed ... More
Calcium regulation of matrix metalloproteinase-mediated migration in oral squamous cell carcinoma cells.
AuthorsMunshi HG, Wu YI, Ariztia EV, Stack MS,
JournalJ Biol Chem
PubMed ID12194986
'Activation of matrix metalloproteinase 2 (MMP-2) has been shown to play a significant role in the behavior of cancer cells, affecting both migration and invasion. The activation process requires multimolecular complex formation involving pro-MMP-2, membrane type 1-MMP (MT1-MMP), and tissue inhibitor of metalloproteinases-2 (TIMP-2). Because calcium is an important regulator ... More
Characterization of the human forkhead gene FREAC-4. Evidence for regulation by Wilms' tumor suppressor gene (WT-1) and p53.
Authors Ernstsson S; Pierrou S; Hulander M; Cederberg A; Hellqvist M; Carlsson P; Enerbäck S;
JournalJ Biol Chem
PubMed ID8702877
'We describe the cloning and sequence analysis of a nearly full-length cDNA as well as a corresponding 5.2-kilobase pair genomic fragment encoding FREAC-4, a member of the forkhead family of transcription factors. The cDNA is collinear with respect to the coding region of the intronless genomic clone. The conceptual translation ... More
Foam cell formation inhibits growth of Chlamydia pneumoniae but does not attenuate Chlamydia pneumoniae-induced secretion of proinflammatory cytokines.
Authors Blessing Erwin; Kuo Cho-Chou; Lin Tsun-Mei; Campbell Lee Ann; Bea Florian; Chesebro Brian; Rosenfeld Michael E;
JournalCirculation
PubMed ID11997286
'BACKGROUND: It has not yet been determined whether lipid-loaded macrophages (foam cells), a major cellular component of atherosclerotic lesions, have the capacity to support growth of Chlamydia pneumoniae and be activated to secrete proinflammatory cytokines in response to C pneumoniae infection. METHODS AND RESULTS: Lipid loading of RAW 264.7 cells ... More
Plaque production by the polyoma virus.
AuthorsDULBECCO R, FREEMAN G,
JournalVirology
PubMed ID13669362
Describes the original formulation of DMEM (Dulbecco’s Modified Eagle Medium), used for plaque production by the polyoma virus.
Genetic analysis of adipogenesis through peroxisome proliferator-activated receptor gamma isoforms.
AuthorsMueller E, Drori S, Aiyer A, Yie J, Sarraf P, Chen H, Hauser S, Rosen ED, Ge K, Roeder RG, Spiegelman BM,
JournalJ Biol Chem
PubMed ID12200443
Peroxisome proliferator-activated receptor (PPAR) gamma is a nuclear receptor that is a key regulator of adipogenesis and is present in two isoforms generated by alternative splicing, PPARgamma1 and PPARgamma2. Studies of the ability of each isoform to stimulate fat differentiation have yielded ambiguous results, in part because PPARgamma stimulates its ... More
Retrovirus-derived vectors are overwhelmingly preferred over other methods for ex vivo gene therapy because they provide permanent integration of foreign genes into cellular DNA. In comparison, cationic lipids mediate efficent gene transfer, but expression is transient. When we combined cationic lipids with retrovirus particles we obtained a significant enhancement of ... More
Identification of a mitochondrial target of thiazolidinedione insulin sensitizers (mTOT)--relationship to newly identified mitochondrial pyruvate carrier proteins.
AuthorsColca JR, McDonald WG, Cavey GS, Cole SL, Holewa DD, Brightwell-Conrad AS, Wolfe CL, Wheeler JS, Coulter KR, Kilkuskie PM, Gracheva E, Korshunova Y, Trusgnich M, Karr R, Wiley SE, Divakaruni AS, Murphy AN, Vigueira PA, Finck BN, Kletzien RF
Journal
PubMed ID23690925
Thiazolidinedione (TZD) insulin sensitizers have the potential to effectively treat a number of human diseases, however the currently available agents have dose-limiting side effects that are mediated via activation of the transcription factor PPAR?. We have recently shown PPAR?-independent actions of TZD insulin sensitizers, but the molecular target of these ... More
Influence of second and third cytoplasmic loops on binding, internalization, and coupling of chimeric bombesin/m3 muscarinic receptors.
Authors Tseng M J; Coon S; Stuenkel E; Struk V; Logsdon C D;
JournalJ Biol Chem
PubMed ID7629092
In order to investigate the molecular basis for differences in the characteristics of bombesin (Bn) and m3 muscarinic cholinergic (m3 ACh) receptors, chimeric Bn receptors possessing cytoplasmic domains from the m3 ACh receptor were produced. The receptors were expressed in CHO-K1 cells and binding, structural, and signal transduction characteristics were ... More
Transmembrane-deletion mutants of the membrane-type matrix metalloproteinase-1 process progelatinase A and express intrinsic matrix-degrading activity.
Authors Pei D; Weiss S J;
JournalJ Biol Chem
PubMed ID8621565
Membrane-type matrix metalloproteinase-1 (MT-MMP-1) has been proposed to play a critical role in regulating the expression of tissue-invasive phenotypes in normal and neoplastic cells by directly or indirectly mediating the activation of progelatinase A. To begin characterizing MT-MMP-1 structure-function relationships, transmembrane-deletion mutants were constructed, and the processing of the zymogens ... More
Mutational analysis of the insulin-like growth factor I prohormone processing site.
Authors Duguay S J; Lai-Zhang J; Steiner D F;
JournalJ Biol Chem
PubMed ID7615562
Insulin-like growth factor I (IGF-I) is a mitogenic peptide that is produced in most tissues and cell lines and plays an important role in embryonic development and postnatal growth. IGF-I is initially synthesized as a prohormone precursor that is converted to mature IGF-I by endoproteolytic removal of the carboxyl-terminal E-domain. ... More
Brief exposure to high-dose transforming growth factor-beta1 enhances periosteal chondrogenesis in vitro: a preliminary report.
BACKGROUND: Articular cartilage has limited potential for repair. There have been various attempts aimed at improving the repair process in articular cartilage. Transforming growth factor-beta1 (TGF-beta1) has a stimulatory effect on chondrogenesis in periosteal explants. The purpose of the present study was to determine the effect of brief exposures (i.e., ... More
A 2-D liquid separations/mass mapping method for interlysate comparison of ovarian cancers.
Authors Kachman Maureen T; Wang Haixing; Schwartz Donald R; Cho Kathleen R; Lubman David M;
JournalAnal Chem
PubMed ID11985308
A two-dimensional liquid phase separation of proteins from whole cell lysates coupled on-line to an electrospray-ionization time-of-flight (ESI-TOF) mass spectrometer (MS) is used to map the protein content of ovarian surface epithelial cells (OSE) and an ovarian carcinoma-derived cell line (ES2). The two dimensions involve the use of liquid isoelectric ... More