Abstract:
:The efficacy of gamma-guanidinooxypropylamine (GAPA), a novel agmatine analogue against protozoan parasite, Leishmaniadonovani was evaluated. Wild-type and ornithine decarboxylase-overexpressors of L. donovani were used to study the effect and mode of action of this inhibitor. GAPA inhibited the growth of both promastigotes and amastigotes. Ornithine decarboxylase (ODC) activity and polyamine levels were markedly lower in cells treated with GAPA and proliferation was rescued by addition of putrescine or spermidine. GAPA inhibited L. donovani recombinant ODC with K(i) value of approximately 60microM. The ODC-overexpressors showed significant resistance to GAPA. GAPA has pK(a) 6.71 and at physiological pH the analogue can mimic protonated state of putrescine and can probably use putrescine transport system. Transport of putrescine in wild-type L. donovani promastigotes was inhibited by GAPA. We for the first time report that GAPA is a potential antileishmanial lead compound and it possibly inhibits L. donovani growth by depletion of intracellular polyamine levels.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Singh S,Jhingran A,Sharma A,Simonian AR,Soininen P,Vepsalainen J,Khomutov AR,Madhubala Rdoi
10.1016/j.bbrc.2008.07.143subject
Has Abstractpub_date
2008-10-10 00:00:00pages
168-72issue
1eissn
0006-291Xissn
1090-2104pii
S0006-291X(08)01500-3journal_volume
375pub_type
杂志文章abstract::C(2)-ceramide, a cell-permeable analog of ceramide, caused cell death in cultured rat cortical neuronal cells. C(2)-ceramide-induced neuronal loss was accompanied by upregulation of caspase-3 activity, measured by cleavage of its fluorogenic substrate Ac-DEVD-AMC. Similar results were obtained when cortical neuronal c...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/s0006-291x(02)02593-7
更新日期:2002-11-29 00:00:00
abstract::The risk of terrorist attacks utilizing either nuclear or radiological weapons has raised concerns about the current lack of effective radioprotectants. Here it is demonstrated that the BH4 peptide domain of the anti-apoptotic protein Bcl-xL can be delivered to cells by covalent attachment to the TAT peptide transduct...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2007.01.180
更新日期:2007-04-06 00:00:00
abstract::In order to develop improved synthetic gene transfer vectors, we have synthesized bifunctional peptides composed of a DNA binding peptide (P2) and ligand peptides selected by the phage display technique on tracheal epithelial cells. We have evaluated the capacity of these peptides to enhance the gene transfer efficien...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.2002.6343
更新日期:2002-02-08 00:00:00
abstract::Rat hearts were perfused for 15min with buffer equilibrated with 0.01% or 0.05% CO. The buffer was equilibrated with 21% O(2) throughout. The ventricular glutathione content decreased by 76% and 84%, 90min post-exposure to 0.01% and 0.05% CO, respectively, compared with 0% CO controls (0.45+/-0.01 micromol/g wet tissu...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/s0006-291x(03)00190-6
更新日期:2003-03-07 00:00:00
abstract:BACKGROUND/AIMS:TEC, a member of the TEC family of non-receptor type protein tyrosine kinases, has recently been suggested to play a role in hepatocyte proliferation and liver regeneration. This study aims to investigate the putative mechanisms of TEC kinase regulation of hepatocyte differentiation, i.e. to explore whi...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2010.11.068
更新日期:2011-01-07 00:00:00
abstract::PDX-1 plays a central role in differentiation of insulin-producing cells. We previously reported that exogenous PDX-1 protein can permeate cells and induce insulin gene expression in progenitor cells. These data suggest a strategy for facilitating differentiation into insulin-producing cells. Here we show the mechanis...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2005.04.092
更新日期:2005-06-24 00:00:00
abstract::To study its biological functions, tumor necrosis factor precursor (proTNF) with a molecular size of 26-KDa was obtained as a recombinant protein from Escherichia coli. The recombinant proTNF was successfully accumulated in the insoluble form, corresponding to about 10-15% of total E. coli proteins. Solubilization, ge...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(91)91426-d
更新日期:1991-08-30 00:00:00
abstract::A complementary DNA library prepared from the 12S polyadenylated RNAs extracted from interferon-induced KG-1 cells, a human myeloblast cell line, was screened for the presence of induction-specific sequences. Clones that exhibited strong positive signals were separated by hybridization criteria into nine classes. Clon...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(83)90833-1
更新日期:1983-07-29 00:00:00
abstract::Din7 is a DNA damage-inducible mitochondrial nuclease that modulates the stability of mitochondrial DNA (mtDNA) in Saccharomyces cerevisiae. How DIN7 gene expression is regulated, however, has remained largely unclear. Using promoter sequence alignment, we found a highly conserved 19-bp sequence in the promoter region...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2007.10.177
更新日期:2008-01-04 00:00:00
abstract::Fifteen luciferase plasmid constructs driven by various promoters including cytomegalovirus (CMV), Rous sarcoma virus (RSV), human serum albumin (SA), alpha-1 antitrypsin (AAT), cytochrome P450 CYP1A2, CYP2C9, CYP2C18, CYP2D6, CYP3A4, mouse CYP2b10, human amyloid precursor protein (APP), chicken beta actin (ACT), nucl...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2005.11.063
更新日期:2006-01-13 00:00:00
abstract::Disrupted-in-Schizophrenia 1 (DISC1) is a promising genetic risk factor for major mental disorders. Many groups repeatedly reported a role for DISC1 in brain development in various strains of mice and rats by using RNA interference (RNAi) approach. Nonetheless, due to the complexity of its molecular disposition, such ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2010.08.117
更新日期:2010-10-01 00:00:00
abstract::Mitochondrial pyruvate carrier (MPC), composed of MPC1 and MPC2, can modulate pyruvate oxidation in mitochondrial and MPC1 expression correlates with poor prognosis of multiple cancers. Here, we reported that MPC1 is acetylated and its main acetylation sites are: K45 and K46. Sirt3 binds to and deacetylates MPC1. High...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2015.11.036
更新日期:2015-12-25 00:00:00
abstract::The addition of the chemotactic factor fMet-Leu-Phe to cell homogenates causes a decrease in the pertussis toxin catalyzed ADP-ribosylation of a 41 kDa protein. The fMet-Leu-Phe induced decrease is not abolished in homogenates prepared from phorbol 12-myristate 13-acetate treated neutrophils. This decreased ribosylati...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(87)91380-5
更新日期:1987-03-13 00:00:00
abstract::The effect of acetaminophen (APAP) dose on the cytochrome P450s responsible for its bioactivation was examined in control mice and mice treated with acetone to induce CYP2E1, or beta-napthaflavone to induce CYP1A2. In non-induced mice, 150 mg/kg APAP caused minimal hepatotoxicity and loss of CYP2E1- but not CYP1A2-dep...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1994.2215
更新日期:1994-08-30 00:00:00
abstract::We demonstrate that the 204 bp intronic gene fragment of C3(1), which has a specific in vitro affinity for the androgen receptor, is able to confer androgen responsiveness to a heterologous promoter. This characteristic is completely destroyed by a single G----T substitution, affecting a 5'-TGTTCT-3' element that clos...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(89)91534-9
更新日期:1989-10-31 00:00:00
abstract::The expression and secretion of Transforming Growth Factor beta1 (TGFbeta1) by cultured testes of day 20.5 rat fetuses were investigated. The testes were found to express two TGFbeta1 mRNA transcripts of 2.5 and 1.8 kb. By using mink lung epithelial cell bioassay based on the measurement of the inhibition of tritiated...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1997.6914
更新日期:1997-07-09 00:00:00
abstract::To investigate the role of myotonin-protein kinase (MT-PK) in the pathophysiology of myotonic dystrophy (DM), we developed specific antibodies against synthetic MT-PK peptides. The antibody identified a 53kDa protein in skeletal muscle and recognized decreases in the amount of the protein in both adult and congenital ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1994.1967
更新日期:1994-07-15 00:00:00
abstract::In most animal species and many prokaryotes, methylmalonyl CoA mutase catalyzes isomerization between methylmalonyl CoA and succinyl CoA using adenosylcobalamin as a cofactor. We describe the absence of this enzyme in Aspergillus nidulans based on the absence of enzyme activity in vitro and the failure to metabolize m...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(91)90648-q
更新日期:1991-06-28 00:00:00
abstract::The spectrum of resting cytochrome c oxidase is modulated by valinomycin addition, which induces a red shift of the Soret band. The enzyme is known both to fluoresce and phosphorescence, effects which can be modulated by certain protein reagents and quenchers. Valinomycin had little effect upon fluorescence at 335 nm,...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(92)90241-c
更新日期:1992-12-30 00:00:00
abstract::Human neutrophil cathepsin G and human skin chymase can inactivate bradykinin by cleavage at the carboxy terminal phenylalanyl-arginyl peptide bond of this polypeptide. The mast cell enzyme is far more effective than cathepsin G, the rates of hydrolysis being comparable to that found for angiotensin I to angiotensin I...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/s0006-291x(85)80180-7
更新日期:1985-03-15 00:00:00
abstract::A wealth of evidence has shown that microglia-associated neuro-inflammation is involved in the secondary brain injury contributed to the poor outcome after traumatic brain injury (TBI). In vitro studies were reported that activation of metabotropic glutamate receptor 5 (mGluR5) could inhibit the microglia-associated i...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2012.12.046
更新日期:2013-01-18 00:00:00
abstract::To investigate the structural basis for human interferon gamma (huIFN gamma) binding to intracellular regions of the human IFN gamma receptor (huIFN gamma R), we have subcloned and expressed the huIFN gamma R free of fusion proteins in the yeast strain Pichia pastoris. HuIFN gamma bound to the cytoplasmic domain of th...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1998.8077
更新日期:1998-02-04 00:00:00
abstract::Ca2+/calmodulin-dependent protein kinases are implicated in regulating the Ca2+ signaling involved in T cell activation and in thymocyte selection. One of the earliest events in signaling through the T cell antigen receptor is activation of the protein tyrosine kinase p56lck. Following T cell activation or signaling t...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1994.1010
更新日期:1994-01-14 00:00:00
abstract::Three small serum proteins (SSP-1, -2, and -3), with molecular masses of 6.5-10kDa, were isolated from Habu (Trimeresurus flavoviridis) serum, and the amino acid sequences were determined by protein and cDNA analysis. Despite only limited sequence identity to any mammalian prostatic secretory protein of 94 amino acids...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2007.05.091
更新日期:2007-07-27 00:00:00
abstract::Ferrous oxygenated (Fe(II)O2) hemoglobins (Hb's) and myoglobins (Mb's) have been shown to react very rapidly with NO, yielding NO3(-) and the ferric heme-protein derivative (Fe(III)), by means of the ferric heme-bound peroxynitrite intermediate (Fe(III)OONO), according to the minimum reaction scheme: Fe(II)O2 + NO (k(...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2005.11.031
更新日期:2006-01-06 00:00:00
abstract::Surfactant convertase is required for conversion of heavy density (H) natural surfactant to light density (L) subtype during cycling in vitro, a technique that reproduces surfactant metabolism. To study mechanisms of H to L conversion, we prepared liposomes of dipalmitoylphosphatidylcholine (DPPC) and phosphatidylglyc...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1998.8325
更新日期:1998-03-27 00:00:00
abstract::Proteins with expanded polyglutamine domains cause eight inherited neurodegenerative diseases including Huntington's disease. In a previous paper, we identified peptides that inhibit polyglutamine protein aggregation and cell death and now describe the amino acid sequence requirements necessary for these activities. T...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.2001.5783
更新日期:2001-11-02 00:00:00
abstract::The distribution of SQSC1 mRNA in tissues of squid Loligo bleekeri was studied by the blot hybridization method. The complete cDNA for the coding region of SQSC1, the invertebrate putative sodium channel, was prepared from squid optic lobe (Sato and Matsumoto, Biochem. Biophys. Res. Comm. 186, 61-68, 1992). Transcript...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1995.1115
更新日期:1995-01-26 00:00:00
abstract::Clinicians successfully utilize high uptake of radiolabeled glucose via PET scanning to localize metastases in melanoma patients. To take advantage of this altered metabolome, 3-bromopyruvate (BrPA) was used to overcome the notorious resistance of melanoma to cell death. Using four melanoma cell lines, BrPA triggered ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2010.04.126
更新日期:2010-05-28 00:00:00
abstract::The mouse disabled 2 interacting protein 2 (mDaIP2) had been obtained through yeast two hybrid system. It consists of 506 amino acids and its calculated molecular weight is 57.7 kDa. The protein contains N-terminal FCH domain and C-terminal SH3 domain. The SH3 domain interacts with the proline rich domain of mDab2 whi...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2004.11.079
更新日期:2005-01-21 00:00:00