Abstract:
:Substantial evidence suggests that peroxynitrite generated from the bi-radical reaction of nitric oxide and superoxide is critically involved in the pathogenesis of neurodegenerative disorders, such as Parkinson's disease. Reaction with sulfhydryl (SH)-containing molecules has been proposed to be a major detoxification pathway of peroxynitrite in biological systems. This study was undertaken to determine if chemically elevated intracellular reduced glutathione (GSH), a major SH-containing biomolecule, affords protection against peroxynitrite-mediated toxicity in cultured neuronal cells. Incubation of human neuroblastoma SH-SY5Y cells with the unique chemoprotectant, 3H-1,2-dithiole-3-thione (D3T), led to a significant elevation of cellular GSH in a concentration-dependent fashion. To examine the protective effects of D3T-induced GSH on peroxynitrite-mediated toxicity, SH-SY5Y cells were pretreated with D3T and then exposed to either the peroxynitrite generator, 3-morpholinosydnonimine (SIN-1), or the authentic peroxynitrite. We observed that D3T-pretreated cells showed a markedly increased resistance to SIN-1- or authentic peroxynitrite-induced cytotoxicity, as assessed by 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium reduction assay. Conversely, depletion of cellular GSH by buthionine sulfoximine (BSO) caused a marked potentiation of SIN-1- or authentic peroxynitrite-mediated cytotoxicity. To further demonstrate the causal role for GSH induction in D3T-mediated cytoprotection, SH-SY5Y cells were co-treated with BSO to abolish D3T-induced GSH elevation. Co-treatment of the cells with BSO was found to significantly reverse the protective effects of D3T on SIN-1- or authentic peroxynitrite-elicited cytotoxicity. Taken together, this study demonstrates for the first time that D3T can induce GSH in cultured SH-SY5Y cells, and that the D3T-augmented cellular GSH defense affords a marked protection against peroxynitrite-induced toxicity in cultured human neuronal cells.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Cao Z,Hallur S,Qiu HZ,Peng X,Li Ydoi
10.1016/j.bbrc.2004.02.156subject
Has Abstractpub_date
2004-04-16 00:00:00pages
1043-9issue
4eissn
0006-291Xissn
1090-2104pii
S0006291X04004401journal_volume
316pub_type
杂志文章abstract::Glucose transporter-1 (GLUT1) is important in placental glucose transport. However, the mechanism of regulation of placental GLUT1 expression remains to be elucidated. We show here that the level of GLUT1 protein in rat choriocarcinoma cells (Rcho-1) decreased during differentiation. To analyze the regulatory mechanis...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.2001.5860
更新日期:2001-11-09 00:00:00
abstract::A secondary structure has been predicted for the hemorrhagic metalloproteases using a method developed in Zurich that extracts structural information from patterns of conservation and variation in homologous protein sequences. This prediction tests the limits of the method when applied to a small number of homologous ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1993.1856
更新日期:1993-07-15 00:00:00
abstract::Neurodegeneration causes dysfunction and degeneration of neurons and is triggered by various factors including genetic defects, free radicals, injury, and glutamate excitotoxicity. Among those, glutamate excitotoxicity is implicated in chronic disorders including AD and ALS, and in acute insults in the CNS including t...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2013.08.052
更新日期:2013-10-25 00:00:00
abstract::We have recently isolated a rat homologue of the Caenorrhabditis elegans lin-10 product. Although rat lin-10 is expressed in the cytosol and membrane fractions of various tissues, it is distributed only in the membrane fraction in brain where it is enriched in the synaptic plasma membrane and postsynaptic density frac...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1998.8243
更新日期:1998-03-06 00:00:00
abstract::Tissue-specific alternative RNA splicing in human F1gamma pre-mRNA produces muscle- and nonmuscle-type isoforms. Muscle-specific exclusion of exon 9 of the F1gamma gene is cell-specifically induced by acidic treatment of human fibrosarcoma HT1080 and rhabdomyosarcoma KYM-1 cells. We constructed an F1gamma minigene con...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1998.9525
更新日期:1998-10-20 00:00:00
abstract::Two types of cDNA clones of protein phosphatase 2A beta, PP-2A beta L and PP-2A beta S, were isolated from a rat testis cDNA library. PP-2A beta L was 1.8 kb in length and corresponded to the 2.0 kb mRNA that is the major species expressed in somatic tissues. PP-2A beta S was 1.3 kb in length and corresponded to the 1...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(90)91255-q
更新日期:1990-07-16 00:00:00
abstract::Tumor invasion of host tissues and trophoblastic penetration of the endometrium share common biological features. Both processes involve the invasion of basement membranes, an event that is initiated by adhesion of cancer or trophoblast cells to basement membrane components and particularly to laminin. Adhesion to thi...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1994.1713
更新日期:1994-05-30 00:00:00
abstract::Autophagy is a physiologically regulated and evolutionary conserved process that plays a critical role in degradation of cytoplasmic proteins and other macromolecules within the lysosomes. Beclin-1, the mammalian orthologue of yeast Atg6, is an important mediator of autophagy that has been studied in many human cancer...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2012.05.079
更新日期:2012-06-15 00:00:00
abstract::The PAX3 transcription factor is the key regulator of melanocyte development during embryogenesis and is also frequently found in melanoma cells. While PAX3 is known to regulate melanocyte differentiation, survival, proliferation and migration during development, it is not clear if its function is maintained in adult ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2011.07.053
更新日期:2011-08-12 00:00:00
abstract::The syndrome of generalized epilepsy with febrile seizures plus type 1 (GEFS+) has been associated to the gene SCN1B coding for the sodium channel beta1 subunit (Wallace, R. H. et al. (1998) Nature Genetics 19, 366-370). In patients, a mutation of the cysteine 121 to trpyptophane (C121W) would cause a lack of modulato...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.2001.4502
更新日期:2001-03-23 00:00:00
abstract::We have established that differing effects of alpha1-adrenergic receptor (AR) subtypes on cell proliferation are due to differential coupling to the Gs/cAMP pathway; thus, both alpha1A- and alpha1B-ARs couple to Gs, while alpha1D-AR does not. To identify the region responsible for this difference in subtype-specific G...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/s0006-291x(02)02589-5
更新日期:2002-11-22 00:00:00
abstract::HMG-CoA reductase was located to the envelope membranes of pea etioplasts, the first report of the suborganelle localization of this key enzyme in isoprenoid synthesis. The enzyme was purified 156 fold from isolated envelope membranes. Purification was achieved by detergent solubilization, hydroxylapatite chromatograp...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(92)91227-h
更新日期:1992-04-15 00:00:00
abstract::PI3K activation is commonly observed in many human cancer cells. Survivin expression is elevated in cancer cells, and induced by some growth factors through PI3K activation. However, it is not clear whether PI3K activation is sufficient to induce survivin expression. To investigate the role of PI3K pathway in the regu...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2010.03.165
更新日期:2010-04-30 00:00:00
abstract::A growing number of important regulatory proteins within cells are modified by conjugation of ubiquitin, a well-conserved 76-amino-acid polypeptide. The ubiquitinated proteins are targeted to proteasome for degradation or alternative metabolic fates, such as triggering of plasma membrane endocytosis and trafficking to...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章,评审
doi:10.1006/bbrc.1999.1880
更新日期:1999-12-29 00:00:00
abstract::The iron molybdenum cofactor of Azotobacter vinelandii nitrogenase has been solubilized for the first time in dimethylformamide and acetonitrile. These solutions have the ability to reconstitute the inactive nitrogenase of the UW 45 mutant of A. vinelandii and exhibit an S = 3/2 EPR signal similar to that for the cofa...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/s0006-291x(86)80053-5
更新日期:1986-09-14 00:00:00
abstract::Dickkopf-1 (DKK-1) is known inhibitor of the canonical Wnt pathway. Recent studies strongly suggested that activation of DKK-1 expression results in inhibition of cell tumorigenicity. Reduced levels of DKK-1 in melanomas were recently shown. However, it is not known if DKK-1 activation in melanoma cells will inhibit c...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2006.11.079
更新日期:2007-01-19 00:00:00
abstract::The phytohormone abscisic acid (ABA) has been recently identified as an endogenous hormone in humans, regulating different cell functions, including inflammatory processes, insulin release and glucose uptake. Systemic sclerosis (SSc) is a chronic inflammatory disease resulting in fibrosis of skin and internal organs. ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2012.04.107
更新日期:2012-05-25 00:00:00
abstract::Near infrared spectroscopy with aquaphotomics as a novel approach was assessed for the diagnosis of soybean plants (Glycine max) infected with soybean mosaic virus (SMV) at latent symptomless stage of the disease. Near infrared (NIR) leaf spectra (in the range of 730-1025nm) acquired from soybean plants with and witho...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2010.06.007
更新日期:2010-07-09 00:00:00
abstract::Enhancer sequences analysed using the informational spectrum method (ISM) show a characteristic frequency at .0488. It has been shown that the characteristic frequency for some DNA binding proteins overlaps the characteristic frequency of their target DNA sequences. We suggest here that two types of proteins, homeopro...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/s0006-291x(86)80248-0
更新日期:1986-12-15 00:00:00
abstract::Previous research showed that protein kinase C alpha (PKC alpha) translocated to the perinuclear region and activated phospholipase D1, but the mechanism involved was not clear. Here, we provide evidence that Phe 663 (the 10th amino acid from C-terminus) of PKC alpha is essential for its translocation. A point mutatio...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2005.05.184
更新日期:2005-08-05 00:00:00
abstract::The new bacterial vector pETM60 enables the expression of His-tagged recombinant proteins fused to the C-terminus of NusA through a TEV protease recognition sequence. Three sequences coding for two protein domains (Xklp3A and Tep3Ag) and one membrane-bound viral protein (E8R) could not be expressed in a soluble form i...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2004.07.189
更新日期:2004-09-24 00:00:00
abstract::The vasculo-toxic effect of meglumine antimoniate (MA) was confirmed in our previous investigation. The current study investigates the association of this effect with altered VEGF-A and VEGF-R2 expression. Additional mechanisms by which MA causes vascular toxicity are not clearly understood. We hypothesized that MA ma...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2018.09.152
更新日期:2018-11-02 00:00:00
abstract::In this study, we report the effect of endothelial progenitor cells (EPCs) on the biological behavior of osteoclast precursors in vitro by establishing an indirect co-culture system of mice EPCs and RAW 264.7 monocyte cells. Results show that the survival, migration, and differentiation of osteoclast precursors were g...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2012.11.081
更新日期:2013-01-11 00:00:00
abstract::Caspases are the primary executioners of apoptosis. Although procaspases believe to exist as inactive forms in cells, the detailed regulatory system remains unclear. Here we show that glucocorticoid modulatory element-binding protein 1 (GMEB1) is capable of binding to the prodomain of caspase-2. We found that this mol...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2004.10.145
更新日期:2004-12-24 00:00:00
abstract::Tamoxifen, a widely used nonsteroidal antiestrogen in the treatment of breast cancer, forms several metabolites. 4-Hydroxytamoxifen (4-OHTam), a metabolite found in the bloodstream, has much higher affinity for the estrogen receptor than tamoxifen itself. Oxidative activation of 4-OHTam induces DNA damage. DNA isolate...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.2000.2896
更新日期:2000-06-24 00:00:00
abstract::The molecular steps of the electron transfer in the endoplasmic reticulum from the secreted proteins during their oxidation are relatively unknown. We present here that flavine adenine dinucleotide (FAD) is a powerful oxidizer of the oxidoreductase system, Ero1 and PDI, besides the proteins of rat liver microsomes and...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2005.10.027
更新日期:2005-12-16 00:00:00
abstract::Estrogen receptor alpha (ERalpha), a ligand controlled transcription factor, plays an important role in breast cancer growth and endocrine therapy. Tamoxifen (TAM) antagonizes ERalpha activity and has been applied in breast cancer treatment. TAM-bound ERalpha associates with nuclear receptor-corepressors. Mitogen-acti...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2010.04.085
更新日期:2010-05-28 00:00:00
abstract::Kidney microsomes from vitamin D-deficient rats and from thyroparathyroidectomized rats converted 25-hydroxyvitamin D3 to an unidentified metabolite. The addition of the cytosolic fraction enhanced microsomal synthesis of this metabolite two-fold. The kinetics of the conversion in the presence of the cytosolic fractio...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(83)91027-6
更新日期:1983-02-10 00:00:00
abstract::Microbial redox reactions of inorganic sulfur compounds play a vital role in balancing the turnover of this element in the environment. These vital reactions are carried out by the enzyme system encoded by the sox operon. The central player of the sulfur oxidation biochemistry is the SoxY-Z protein complex. Another pr...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2011.09.101
更新日期:2011-10-22 00:00:00
abstract::Protein kinase C (PKC) and the GTPase-activating protein GAP can be detected in immunoprecipitates of mouse epidermis and lung cytosol obtained with either anti-GAP or anti-PKC antisera. The PKC in the immune-complex phosphorylates the coprecipitated GAP protein. Moreover, purified recombinant GAP is phosphorylated in...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1993.1858
更新日期:1993-07-15 00:00:00