Abstract：
:We report on a novel method to monitor changes in intracellular cAMP concentration ([cAMP]i) within intact living cells using a chimeric fusion of the catalytic subunit of cAMP-dependent protein kinase to green fluorescent protein (PKAcat-GFP). In stably transfected unstimulated fibroblasts, fusion protein fluorescence is highly concentrated in aggregates throughout the cytoplasm and absent in the nucleus. Elevation of [cAMP]i disperses GFP fluorescence from the cytoplasmic aggregates within minutes. Spot-photobleach measurements show that the rate of exchange of GFP-labeled catalytic subunits at these aggregates increases in proportion to [cAMP]i. For any given stimulus, the response curve for dispersal of GFP fluorescence from aggregates agrees closely with the increase in total [cAMP]i as measured by standard in vitro methods (SPA). The redistribution of fluorescence is completely reversible: reduction of [cAMP]i results in return of fluorescence to the cytoplasmic aggregates. Consistent behaviour of PKAcat-GFP is seen in different cell backgrounds. We demonstrate that PKA Redistribution assays are suitable for measurement of changes in [cAMP]i brought about by both Gs- and Gi-protein-coupled receptor stimulation as well as by inhibition of cAMP phosphodiesterases.
journal_name
Cell Signaljournal_title
Cellular signallingauthors
Almholt K,Tullin S,Skyggebjerg O,Scudder K,Thastrup O,Terry Rdoi
10.1016/j.cellsig.2004.01.006subject
Has Abstractpub_date
2004-08-01 00:00:00pages
907-20issue
8eissn
0898-6568issn
1873-3913pii
S089865680400018Xjournal_volume
16pub_type
杂志文章abstract：:The roles of protein kinase C (PKC) isoenzymes in the differentiation process of THP-1 cells are investigated. Inhibition of PKC by RO 31-8220 reduces the phagocytosis of latex particles and the release of superoxide, prostaglandin E(2) (PGE(2)), and tumour necrosis factor (TNF)-alpha. The proliferation of THP-1 cells...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/s0898-6568(00)00069-3
更新日期：2000-05-01 00:00:00
abstract：:Bone Morphogenetic Proteins (BMPs) are potent growth factors belonging to the Transforming Growth Factor Beta superfamily. To date over 20 members have been identified in humans with varying functions during processes such as embryogenesis, skeletal formation, hematopoiesis and neurogenesis. Though their functions hav...
journal_title：Cellular signalling
pub_type： 杂志文章,评审
doi：10.1016/j.cellsig.2010.10.003
更新日期：2011-04-01 00:00:00
abstract：:In this study, we demonstrate that EGF inhibits the TGF-β1-induced apoptosis of Huh7 cells. TGF-β1 up-regulates the expression of PDCD4 causing apoptosis, by stimulating the synthesis of PDCD4 mRNA via the Smad signaling pathway. TGF-β1 also inhibits the activation of S6 kinase 1 which phosphorylates the serine 67 res...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2013.11.038
更新日期：2014-03-01 00:00:00
abstract：:The implication of MAP kinases in the proliferation control of pancreatic cancer cells is still unknown. This study was undertaken to examine the contribution of the p44/p42 and p38 MAP kinases in the mitogenic response to epidermal growth factor (EGF) and bombesin in human pancreatic cancer cells, MIA PaCa-2 and PANC...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/s0898-6568(99)00030-3
更新日期：1999-08-01 00:00:00
abstract：:Integrin β6 (ITGB6), an epithelial-specific integrin, is upregulated in oral squamous cell carcinomas (OSCC) and is associated with progression and metastasis of OSCC. Lysophosphatidic acid (LPA), an important bioactive phospholipid present in saliva, has also been related to OSCC cell migration and invasiveness. LPA ...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2019.04.008
更新日期：2019-08-01 00:00:00
abstract：:Epac1 is a cAMP-stimulated guanine exchange factor that activates Rap1. The protein product of the T cell leukemia 1 (TCL1) proto-oncogene binds to Akt enhancing its kinase activity. TCL1 and Epac promote cellular proliferation because of their activating effects on Akt. Employing macrophages, we have studied the mech...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2007.10.008
更新日期：2008-01-01 00:00:00
abstract：:Slug, a Snail-related zinc-finger transcription factor implicated in the increased motility of mesenchymal cells during embryonic development and progression of cancer cells towards an invasive phenotype, plays a specific and critical role in the pathogenesis of Bcr-Abl-associated leukemias. Here we report that Slug o...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2010.04.002
更新日期：2010-08-01 00:00:00
abstract：:The mechanistic target of rapamycin complex 1 (mTORC1) is a central modulator of inflammation and tumorigenesis in the gastrointestinal tract. Growth factors upregulate mTORC1 via the PI3K/AKT and/or Ras/MAPK signal pathways. Curcumin (CUR), a polyphenol found in turmeric roots (Curcuma longa) can repress mTORC1 kinas...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2020.109842
更新日期：2021-02-01 00:00:00
abstract：:Protein kinase CK2 is a critical factor for the survival of cells. It is overexpressed in many cancer cells and provides protection against apoptosis in these cells. Inhibition of CK2 kinase activity in various cancer cells leads to apoptosis, which makes CK2 an attractive target for cancer therapy. Little is, however...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2014.03.014
更新日期：2014-07-01 00:00:00
abstract：:Acute myeloid leukemia (AML) cell lines treated by genotoxic agents or by Tumor Necrosis Factor alpha (TNFalpha) acquire potent cytotoxicity towards myeloid cells through activation of granzyme B (GrB)/perforin (PFN) system. Here we first extend this observation to another death receptor activator, Fas Ligand (FasL). ...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2006.12.005
更新日期：2007-06-01 00:00:00
abstract：:JNK proteins are conserved stress-activated MAP kinases. In C. elegans, the JNK-homolog KGB-1 plays essential roles in protection from heavy metals and protein folding stress. However, the contributions of KGB-1 are age-dependent, providing protection in larvae, but reducing stress resistance and shortening lifespan i...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2016.11.010
更新日期：2017-01-01 00:00:00
abstract：:The mammalian target of rapamycin complex 1(mTORC1) integrates diverse signals to control cell growth, proliferation, survival, and metabolism. Role of reactive oxygen species (ROS) on mTORC1 signaling remains obscure and mechanisms through which ROS modulate mTORC1 are not known.We demonstrate that low doses ROS expo...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2010.05.015
更新日期：2010-10-01 00:00:00
abstract：:We demonstrate the expression of S1P(1,3,4,5) the receptors for sphingosine 1-phosphate (S1P), and LPA(1,2,3) the receptors for lysophosphatidic acid (LPA) in T helper 1 (Th1) and T helper 2 (Th2) cells. S1P and LPA induce the chemotaxis of Th1 and Th2 cells, an activity that is resistant to pertussis toxin (PTX) pret...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2004.02.001
更新日期：2004-09-01 00:00:00
abstract：:We analysed the effects of high glucose in rat1 cells overexpressing insulin receptor. High (25 mM) glucose inhibited insulin-stimulated tyrosine kinase activity completely at insulin concentrations of 1 and 5 ng/ml. Decapeptides modelled on insulin receptor sequences surrounding serines 1035 and 1270 were found to in...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/s0898-6568(03)00090-1
更新日期：2004-01-01 00:00:00
abstract：:Eight paralogue members form the family of transmembrane channel-like (TMC) proteins that share considerable sequence homology to anoctamin 1 (Ano1, TMEM16A). Ano1 is a Ca(2+) activated Cl(-) channel that is related to head and neck cancer, often caused by human papilloma virus (HPV) infection. Mutations in TMC 6 and ...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2014.09.001
更新日期：2014-12-01 00:00:00
abstract：:It is well established that the IFN-gamma/STAT1 pathway plays an important role in the pancreatic beta-cell apoptosis that is observed in STZ-induced type 1 diabetes; however, the upstream regulatory proteins involved have not been understood. Here, we investigated whether activating transcription factor 3 (ATF3) affe...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2010.06.007
更新日期：2010-11-01 00:00:00
abstract：:Beyond its key role in the control of energy metabolism, insulin is also an important regulator of cell division and neoplasia. However, the molecular events involved in insulin-driven cell proliferation are not fully elucidated. Here, we show that the ubiquitin ligase Chfr, a checkpoint protein involved in G2/M trans...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2015.01.003
更新日期：2015-04-01 00:00:00
abstract：:Cellular signal transmission requires the dynamic formation of spatiotemporally controlled molecular interactions. At the cell surface information is received by receptor complexes and relayed through intracellular signaling platforms which organize the actions of functionally interacting signaling enzymes and substra...
journal_title：Cellular signalling
pub_type： 杂志文章,评审
doi：10.1016/j.cellsig.2017.05.012
更新日期：2017-09-01 00:00:00
abstract：:Glucuronyl C5-epimerase (Hsepi) catalyzes the conversion of glucuronic acid to iduronic acid in the process of heparan sulfate biosynthesis. Targeted interruption of the gene, Glce, in mice resulted in neonatal lethality with varied defects in organ development. To understand the underlying molecular mechanisms of the...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2018.11.010
更新日期：2019-02-01 00:00:00
abstract：:Therapeutic benefits and clinical application of paclitaxel for treating non-small cell lung cancers (NSCLCs) are extremely hampered due to the chemoresistance. A recent study found that fibronectin type III domain-containing protein 5 (FNDC5) was downregulated in NSCLCs cells and negatively correlated with the clinic...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2020.109665
更新日期：2020-08-01 00:00:00
abstract：:The human NPY Y(1) receptor undergoes fast agonist-induced internalization via clathrin-coated pits then recycles back to the cell membrane. In an attempt to identify the molecular determinants involved in this process, we studied several C-terminal truncation mutants tagged with EFGP. In the absence of agonist, Y(1) ...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2010.09.007
更新日期：2011-01-01 00:00:00
abstract：:Nitric oxide (NO) is known to regulate redox-sensitive signalling pathways in physiology and pathophysiology. Depending on its concentration, the NO-releasing compound S-nitrosoglutathione (GSNO) causes negative and positive regulation of thymocyte apoptosis. At levels below 0.6 mM, GSNO produces deoxyribonucleic acid...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/0898-6568(95)02051-9
更新日期：1996-03-01 00:00:00
abstract：:Disabled-2 (DAB2) is an adapter protein that plays a key role in cell proliferation and differentiation. We reported here that DAB2 is expressed in various regions of rat central nervous system and is most abundant in the olfactory bulb. The up-regulation of DAB2 upon 5,7-dihydroxytryptamine-induced spinal cord lesion...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2007.01.019
更新日期：2007-06-01 00:00:00
abstract：:The cyclin-dependent kinase inhibitors (CKI) interact with cyclin-cdk complexes to arrest mitogen-stimulated transit through the cell cycle, but we and others have recently shown that these molecules can exert permissive effects on cell cycle transit as well. The p53 protein induces transcription of the p21(Waf1/Cip1)...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/s0898-6568(00)00081-4
更新日期：2000-06-01 00:00:00
abstract：:Ubiquitination controls multiple cellular processes relevant to cancer pathogenesis. Using Gene Set Enrichment Analysis of an mRNA transcriptome dataset, we have identified genes encoding components of the ubiquitin system that are differentially expressed in colorectal cancers as compared to normal colonic mucosa. Am...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2012.08.012
更新日期：2013-01-01 00:00:00
abstract：:Smac/DIABLO is a mitochondrial protein that participates in apoptotic cell death by means of sequestering several members of the inhibitor of apoptosis protein family. This action allows caspase activation, cleavage of key cellular substrates and death. Release from mitochondria is considered the main regulatory step ...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2007.01.001
更新日期：2007-06-01 00:00:00
abstract：:Here we demonstrate that elevation of cyclic AMP (cAMP) levels in human umbilical vein endothelial cells (HUVECs) specifically attenuates ERK1,2 activation in response to either leptin or a soluble interleukin IL-6 receptor-alpha/IL-6 (sIL-6R alpha/IL-6) trans-signalling complex but not protein kinase C activator phor...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2009.07.009
更新日期：2009-11-01 00:00:00
abstract：:C1-Ten is a member of the tensin family of focal adhesion molecules but recent studies suggest it plays a more active role in many biological processes because of its potential association with diabetes and cancers. However, relatively little is known about the regulation of C1-Ten, such as changes in its protein leve...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2014.07.033
更新日期：2014-11-01 00:00:00
abstract：:A pathological hallmark of Alzheimer's disease (AD) is the aggregation of amyloid-β peptides (Aβ) into fibrils, leading to deposits in cerebral parenchyma and vessels known as cerebral amyloid angiopathy (CAA). Platelets are major players of hemostasis but are also implicated in AD. Recently we provided strong evidenc...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2018.06.015
更新日期：2018-10-01 00:00:00
abstract：:AMP-activated protein kinase (AMPK), an important regulator of energy homeostasis, is known to be activated during T cell activation. T cell activation by T cell receptor (TCR) engagement or its pharmacological mimics, PMA plus ionomycin (PMA/Io), induces immunomodulatory FasL and cyclooxygenase-2 (COX-2) expression. ...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2012.01.015
更新日期：2012-06-01 00:00:00
