Abstract:
:Two-pore channel proteins, TPC1 and TPC2, are calcium permeable ion channels found localized to the membranes of endolysosomal calcium stores. There is increasing interest in the role of TPC-mediated intracellular signaling in various pathologies; however their role in breast cancer has not been extensively evaluated. TPC1 and TPC2 mRNA was present in all non-tumorigenic and tumorigenic breast cell lines assessed. Silencing of TPC2 but not TPC1 attenuated epidermal growth factor-induced vimentin expression in MDA-MB-468 breast cancer cells. This effect was not due to a general inhibition of epithelial to mesenchymal transition (EMT) as TPC2 silencing had no effect on epidermal growth factor (EGF)-induced changes on E-cadherin expression. TPC1 and TPC2 were also shown to differentially regulate cyclopiazonic acid (CPA)-mediated changes in cytosolic free Ca(2+). These findings indicate potential differential regulation of signaling processes by TPC1 and TPC2 in breast cancer cells.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Jahidin AH,Stewart TA,Thompson EW,Roberts-Thomson SJ,Monteith GRdoi
10.1016/j.bbrc.2016.06.127subject
Has Abstractpub_date
2016-09-02 00:00:00pages
731-736issue
4eissn
0006-291Xissn
1090-2104pii
S0006-291X(16)31054-3journal_volume
477pub_type
杂志文章abstract::Intracellular B(12) metabolism involves a B(12) trafficking chaperone CblC that is well conserved in mammals including human. The protein CblC is known to bind cyanocobalamin (CNCbl, vitamin B(12)) inducing the base-off transition and convert it into an intermediate that can be used in enzyme cofactor synthesis. The b...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2011.07.103
更新日期:2011-08-26 00:00:00
abstract::The T cell death-associated gene 8 (TDAG8) is a pH-sensing GPCR with a reported immune-specific expression profile. Here, we demonstrate pH-induced activation of TDAG8 receptor cloned from rodent brain (rTDAG8). Cloned rTDAG8 transcript showed 88-95% homology with human and mouse transcripts of lymphoid origin. RT-PCR...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2009.05.133
更新日期:2009-08-28 00:00:00
abstract::The tenascin-R (TN-R) gene encodes a multidomain extracellular matrix glycoprotein belonging to the tenascin family. It is detectable mainly in oligodendrocytes and neuronal subpopulations of the central nervous system. In this report, we describe the structure of the 5'-region of the mouse TN-R gene and characterise ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/s0006-291x(03)01506-7
更新日期:2003-09-05 00:00:00
abstract::To gain further information on the role of mitochondrial transcription factor A (TFAM) in mitochondrial biogenesis, we studied the post-translational modifications of the protein in 6- and 28-month-old rat liver. Mass spectrometry and immunoblot analysis revealed that TFAM was acetylated at a single lysine residue and...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/s0006-291x(02)03008-5
更新日期:2003-01-31 00:00:00
abstract::In this study the interactions of oxytocin with the transmembrane region of the oxytocin receptor were modelled in order to explain the selective binding of oxytocin and vasopressin. Three sites of interaction in the receptors were identified by sequence comparison and model building. Both receptors share one site, wh...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1994.2110
更新日期:1994-08-15 00:00:00
abstract::Two internalizing monovalent single chain antibody fragments (scFv), C6.5 and F5, that recognize distinct ErbB2 extracellular domain (ECD) epitopes, and their bivalent forms dbC6.5 and F5(scFv')(2), were compared to the growth-inhibiting anti-ErbB2 antibody Herceptin/trastuzumab, in either its bivalent (Her) or monova...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.2000.4104
更新日期:2001-01-12 00:00:00
abstract::Previous studies have shown that DNA topoisomerase Iα (AtTOP1α) has specific developmental functions during growth and development in Arabidopsis thaliana. However, little is known about the roles of DNA topoisomerases in the closely related and commercially important plant, rapeseed (Brassica napus). Here, the full-l...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2017.03.011
更新日期:2017-04-22 00:00:00
abstract::Enzymes belonging to the S9 family of prolyl oligopeptidases are of interest because of their pharmacological importance and have a non-catalytic β-propeller domain. In this study, we found that the oxidation of Met203, which lies on surface of the β-propeller domain, leads to change in the substrate specificity of er...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2017.04.064
更新日期:2017-05-27 00:00:00
abstract::Lipid membrane can enhance prion protein (PrP) pathological fibrillogenesis. A neuronal paralog of PrP, named Shadoo (Sho), is localized to similar membrane environment as PrP and can also convert to amyloid-like fibrilles. To gain insight into the role of Sho in prion diseases, we studied Sho interactions with cellul...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2013.07.104
更新日期:2013-08-30 00:00:00
abstract::Heparin binding neurite-promoting factor (HBNF) is a highly basic 136 amino acid protein containing 10 cysteine residues. We have determined the redox status and the disulfide arrangement of the cysteine residues in HBNF from bovine brain and refolded human recombinant protein produced in E. coli. Our data indicate th...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1993.1476
更新日期:1993-04-30 00:00:00
abstract::The human 5-HT1A receptor was screened for naturally occurring mutations. The PCR product of the 5-HT1A receptor gene was digested with several restriction enzymes and evaluated by single-strand conformational polymorphism (SSCP) analysis. Comparison of the SSCP electrophoretic pattern with a restriction map of the 5-...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1995.1692
更新日期:1995-05-16 00:00:00
abstract::The glutathione reductase gene, gor, was cloned from the plant pathogen Xanthomonas campestris pv. phaseoli. Its gene expression and enzyme characteristics were found to be different from those of previously studied homologues. Northern blot hybridization, promoter-lacZ fusion, and enzyme assay experiments revealed th...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2005.04.050
更新日期:2005-06-17 00:00:00
abstract::The mechanism of transcriptional repression by nuclear hormone receptors, especially in the presence of the ligands, is largely unknown. We previously reported that 1,25-dihydroxyvitamin D(3) (1,25 vitamin D3) inhibited expression of the parathyroid hormone-related polypeptide (PTHrP) gene through the interaction betw...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/s0006-291x(03)00651-x
更新日期:2003-05-16 00:00:00
abstract::In AL-amyloidosis the cause of amyloid fibril formation in beta-pleated sheets from the precursor protein immunoglobulin light chain is not established, but studies of AL-proteins indicate that amino acid substitutions are important in the pathogenesis. Amyloid material was extracted from a subcutaneous fat tissue bio...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1998.8515
更新日期:1998-04-28 00:00:00
abstract::Biochemical properties of Type II restriction enzyme BanI were characterized. Kinetic parameters were evaluated and an enhancement of rate was observed when the recognition site was located in a more central position in the substrate, suggesting that BanI locates its recognition site by a sliding mechanism. As BanI ha...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.2000.3621
更新日期:2000-12-09 00:00:00
abstract::Members of the RNase E/G family are multimeric, 5'-end-sensing, single-strand-specific endoribonucleases that are found in chloroplasts as well as bacteria, and have central roles in RNA processing and degradation. A well-studied member of this family is Escherichia coli RNase G. Recently, we have shown that the inter...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2009.11.156
更新日期:2010-01-01 00:00:00
abstract::MicroRNAs (miRNAs), small single-stranded regulatory RNAs capable of interfering with intracellular mRNAs that contain partial complementarity, are useful for the design of new therapies against cancer polymorphism and viral mutation. MiRNA was originally discovered in the intergenic regions of the Caenorhabditis eleg...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2004.10.215
更新日期:2005-01-21 00:00:00
abstract::We have previously shown that cationic cholesterol derivatives bearing guanidinium groups were efficient vectors for gene transfer. To further evaluate the potentiality of this novel class of cationic lipids, we undertook to study the transfection efficiency of guanidinium-based lipids with other hydrophobic moieties....
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.2001.4401
更新日期:2001-02-23 00:00:00
abstract::Three immunoreactive prolactin proteins (24 Kd, 16 Kd, and 12 Kd) were identified in the rat brain using sodium dodecyl sulphate polyacrylamide gel electrophoresis, and western blot analyses. In male and female brains, the primary prolactin protein has a molecular weight of 24 Kd which is similar to that of pituitary ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(88)90435-4
更新日期:1988-01-29 00:00:00
abstract::Activation of muscarinic cholinergic receptors on 1321N1 human astrocytoma cells leads to Ca2+ mobilization as measured by quin 2 fluorescence. Acetylcholine and methacholine were full and potent agonists, while carbachol and muscarine, were fully efficacious but 6- and 10-fold less potent than acetylcholine. The carb...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/s0006-291x(87)80104-3
更新日期:1987-08-31 00:00:00
abstract::Proteolipid protein, the major protein component of central nervous system (CNS) myelin, is known to contain approximately 2% by weight of covalently bound fatty acids. Recently, this protein was also found, though at a lower concentration, in the peripheral nervous system (PNS). The present study was undertaken to de...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1993.1767
更新日期:1993-06-30 00:00:00
abstract::The COP9 signalosome (CSN) is a regulator of the ubiquitin (Ub) proteasome system (UPS). In the UPS, proteins are Ub-labeled for degradation by Ub ligases conferring substrate specificity. The CSN controls a large family of Ub ligases called cullin-RING ligases (CRLs), which ubiquitinate cell cycle regulators, transcr...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2014.06.093
更新日期:2014-07-25 00:00:00
abstract::Platelet activation (cytosolic [Ca2+] increase, aggregation and ATP secretion) was induced with A1F-4. This agent presumably interacts with a G protein which appears to mediate the coupling of the receptors for Ca mobilizing hormones and phospholipase C. All the A1F-4 evoked responses were inhibited by treatment with ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/s0006-291x(88)80776-9
更新日期:1988-11-15 00:00:00
abstract::Different progestogens are widely used in hormonal therapy and mediate their therapeutic actions via the progesterone receptor (PR). Little published data exist on their relative efficacies and potencies via the PR, while those available may be confounded by off-target receptors, different methodologies and model syst...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2020.09.058
更新日期:2020-12-17 00:00:00
abstract::4alpha-Carbinolamine dehydratase is a bifunctional protein involved in the regeneration of tetrahydrobiopterin during the hydroxylation of the aromatic amino acids. It is also a dimerization cofactor of HNF1 and therefore is believed to function as part of the hepatic gene transcription system. In view of the recent d...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.1997.7336
更新日期:1997-09-18 00:00:00
abstract::To study polygenetically inherited human diseases like hypertension, inbred rat strains are usually the preferred models. Because many inbred generations under optimized environmental conditions may have led to the survival of "silent" disease genes, we used a cross between one wild rat and genetically hypertensive SH...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1006/bbrc.2001.5091
更新日期:2001-06-29 00:00:00
abstract::Transcription factor IIA (TFIIA) is a necessary component of many RNA polymerase II transcription complexes. Assembly of the transcription complex begins when TFIIA interacts with the promoter. We have previously purified wheat germ TFIIA to homogeneity and demonstrated that it substitutes for human TFIIA in a human i...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/0006-291x(90)92349-5
更新日期:1990-04-30 00:00:00
abstract::This study investigates whether angiotensin converting enzyme (ACE) inhibitors can block high glucose-induced increase of angiotensin II (Ang II) levels in cultured rat mesangial cells. Incubation of cells with high glucose for 5 days increased Ang II in the cell media (extracellular) and cell lysates (intracellular) ...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2007.04.038
更新日期:2007-06-15 00:00:00
abstract::In this report, we demonstrate that HL-60 nuclei isolated in calcium but not EGTA containing buffers specifically bind PE and express approximately 37,000 receptor sites/nucleus. Nuclear phorbol ester binding is lost by isolation in the absence of calcium, but can be repleted by the addition of partially purified prot...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/s0006-291x(87)80523-5
更新日期:1987-04-14 00:00:00
abstract::Sodium dodecyl sulfate (SDS), a representative anionic surfactant, is a commonly used reagent in studies of the cell membrane and cell wall. However, the mechanisms through which SDS affects cellular functions have not yet been fully examined. Thus, to gain further insights into the cellular functions and responses to...
journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
doi:10.1016/j.bbrc.2020.03.163
更新日期:2020-06-18 00:00:00