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) receptors lacking the last 32 C-terminal amino acids (Y(1)Δ32) are constitutively internalized, unlike full-length Y(1) receptors. At steady state, internalized Y(1)Δ32 receptors co-localize with transferrin, a marker of early and recycling endosomes. Inhibition of constitutive internalization of Y(1)Δ32 receptors by hypertonic sucrose or by co-expression of Rab5aS34N, a dominant negative form of the small GTPase Rab5a or depletion of all three isoforms of Rab5 indicates the involvement of clathrin-coated pits. In contrast, a truncated receptor lacking the last 42 C-terminal amino acids (Y(1)Δ42) does not constitutively internalize, consistent with the possibility that there is a molecular determinant responsible for constitutive internalization located in the last 10 amino acids of Y(1)Δ32 receptors. We show that the agonist-independent internalization of Y(1)Δ32 receptors involves a tyrosine-based motif YXXΦ. The potential role of this motif in the behaviour of full-length Y(1) receptors has also been explored. Our results indicate that a C-terminal tyrosine-based motif is critical for the constitutive internalization of truncated Y(1)Δ32 receptors. We suggest that this motif is masked in full-length Y(1) receptors which do not constitutively internalize in the absence of agonist.
journal_name
Cell Signaljournal_title
Cellular signallingauthors
Lecat S,Ouédraogo M,Cherrier T,Noulet F,Rondé P,Glasser N,Galzi JL,Mely Y,Takeda K,Bucher Bdoi
10.1016/j.cellsig.2010.09.007subject
Has Abstractpub_date
2011-01-01 00:00:00pages
228-38issue
1eissn
0898-6568issn
1873-3913pii
S0898-6568(10)00263-9journal_volume
23pub_type
杂志文章abstract：:The protein kinase C (PKC) family is the most prominent target of tumor-promoting phorbol esters. For the PKCepsilon isozyme, different intracellular localizations and oncogenic potential in several but not all experimental systems have been reported. To obtain information about PKCepsilon-signaling, we investigated t...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2009.01.017
更新日期：2009-05-01 00:00:00
abstract：:The activation of corticotrophin-releasing hormone receptor (CRHR) 1 is implicated in neuronal injury in experimental stroke. However, little is known about the relationship between CRHR1 activation and brain endothelial barrier impairment after ischemia and reperfusion (I/R). Recently we have demonstrated that the ac...
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doi：10.1016/j.cellsig.2019.109467
更新日期：2020-02-01 00:00:00
abstract：:Lysyl oxidase-like 2 (LOXL2) is a member of the lysyl oxidase gene family that contributes to the invasiveness and metastasis in tumor progression. However, the role of LOXL2 in cellular signaling is incompletely understood. In this study, we investigated a possible mechanism of LOXL2 function in tumor metastases in v...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2014.05.010
更新日期：2014-09-01 00:00:00
abstract：:Regulator of G Protein Signalling (RGS) proteins impede heterotrimeric G protein signalling. RGS2 decreases cAMP production and appears to interact with both adenylyl cyclase (AC) and its stimulatory G protein Gs. We showed previously that Green Fluorescent Protein-tagged RGS2 (GFP-RGS2) localizes to the nucleus in HE...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2005.05.004
更新日期：2006-03-01 00:00:00
abstract：:Plasminogen activator inhibitor-1 (PAI-1), the primary inhibitor of urokinase-and tissue-type plasminogen activators (uPA and tPA), is an injury-response gene implicated in the development of tissue fibrosis and cardiovascular disease. PAI-1 mRNA and protein levels were elevated in the balloon catheter-injured carotid...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2015.01.009
更新日期：2015-05-01 00:00:00
abstract：:PGE2 and prostacyclin each enhance cAMP synthesis in the osteoblast-like cell line UMR-106. The amount of cAMP induced by PGE2 was 5-7-fold greater than the amount induced by cicaprost or iloprost, stable prostacyclin analogues. Both PGE2 and the two prostacyclin analogues enhanced cAMP synthesis with similar time dep...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/s0898-6568(98)00052-7
更新日期：1999-03-01 00:00:00
abstract：:Insulin/IGF-1 action is driven by a complex and highly integrated signalling network. Loss-of-function studies indicate that the major insulin/IGF-1 receptor substrate (IRS) proteins, IRS-1 and IRS-2, mediate different biological functions in vitro and in vivo, suggesting specific signalling properties despite their h...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2018.03.003
更新日期：2018-07-01 00:00:00
abstract：:The nuclear factor kappa B (NF-κB) transcription factor-mediated transcription is the endpoint of a series of signal transduction events that are initiated by a vast array of stimuli. Both the proteolytic and non-proteolytic functions of ubiquitination are critically important for the regulation of NF-κB activation. L...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2010.11.017
更新日期：2011-04-01 00:00:00
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journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2012.10.009
更新日期：2013-01-01 00:00:00
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journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2007.08.013
更新日期：2007-12-01 00:00:00
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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：:Proteoglycans (PGs) represent a large proportion of the components that constitute the extracellular matrix (ECM). They are a diverse group of glycoproteins characterized by a covalent link to a specific glycosaminoglycan type. As part of the ECM, heparan sulfate (HS)PGs participate in both physiological and pathologi...
journal_title：Cellular signalling
pub_type： 杂志文章,评审
doi：10.1016/j.cellsig.2020.109822
更新日期：2021-01-01 00:00:00
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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：:Cell surface receptors for high-density lipoprotein (HDL) on hepatocytes are major partners in the regulation of cholesterol homeostasis. We have previously demonstrated on human hepatocytes that apolipoprotein A-I binding to an ectopic F(1)-ATPase stimulates the production of extracellular ADP that activates a P2Y(13...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2008.09.016
更新日期：2009-01-01 00:00:00
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journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/0898-6568(92)90051-9
更新日期：1992-11-01 00:00:00
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journal_title：Cellular signalling
pub_type： 杂志文章,评审
doi：10.1016/j.cellsig.2010.10.022
更新日期：2011-06-01 00:00:00
abstract：:It has been shown lately that activity of G protein-coupled receptors (GPCRs) is regulated by an array of proteins binding to carboxy (C)-terminus of GPCRs. Proteins of 4.1 family are subsets of subcortical cytoskeletal proteins and are known to stabilize cellular structures and proteins at the plasma membrane. One of...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2012.11.020
更新日期：2013-03-01 00:00:00
abstract：:Transmembrane prostate androgen-induced protein (TMEPAI) is a type I transmembrane protein induced by several intracellular signaling pathways such as androgen, TGF-β, EGF, and Wnt signaling. It has been reported that TMEPAI functions to suppress TGF-β and androgen signaling but here, we report a novel function of TME...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2019.03.016
更新日期：2019-07-01 00:00:00
abstract：:Calcium has long been recognized as an important regulator of cell cycle transitions although the mechanisms are largely unknown. A functional genomic screen has identified genes involved in the regulation of early cell cycle progression by calcium. These genes when overexpressed confer the ability to bypass the G1/S ...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2007.10.030
更新日期：2008-02-01 00:00:00
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journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2017.10.017
更新日期：2018-01-01 00:00:00
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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：:SCF induces autophosphorylation of Kit and activates a variety of signaling components including Jnks, Erks, PI 3 Kinase, the JAK-Stat pathway and members of the Src family. Previously we showed that Lyn is activated at multiple points during SCF-induced cell cycle progression and contributes to SCF-mediated growth, c...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2004.06.004
更新日期：2005-01-01 00:00:00
abstract：:Toll-like-receptor mediated signaling is finely regulated by a complex intracellular protein network including the interleukin-1 receptor associate kinases (IRAKs). IRAK-4, 1, and 2 may positively regulate innate immunity signaling through the activation of various downstream kinases such as MAPKs. In contrast, IRAK-M...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2007.02.009
更新日期：2007-07-01 00:00:00
abstract：:Induction of apoptosis in Hep3B hepatoma cells by transforming growth factor beta 1 (TGF-beta 1) was accompanied by the activation of interleukin-1-beta-converting-enzyme-like proteases, which have recently been renamed as caspases. The caspase inhibitor ZVAD-FMK, which has a broader specificity for caspase family pro...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/s0898-6568(97)00189-7
更新日期：1998-07-01 00:00:00
abstract：:Ceramide 1-phosphate (C1P) is a bioactive sphingolipid that is implicated in the regulation of cell homeostasis and the control of inflammation. It is mitogenic for fibroblasts and macrophages, and has been described as potent inhibitor of apoptosis. Using RAW 264.7 macrophages we have now discovered a new biological ...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2008.11.003
更新日期：2009-03-01 00:00:00
abstract：:We have previously shown that N18TG2 neuroblastoma cells express the type 6 adenylyl cyclase and that preincubation with nitric oxide (NO) attenuates Gs- and forskolin-stimulated activity. Here we show that this inhibition reflects a direct action of NO on the adenylyl cyclase. Preincubation of N18TG2 cell membranes a...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/s0898-6568(99)00082-0
更新日期：2000-04-01 00:00:00
abstract：:Rho GTPases are molecular switches involved in the regulation of many cellular processes. This review summarizes work examining how stimulation of receptor tyrosine kinases (RTKs) leads to the activation of Rho guanine nucleotide exchange factors (GEFs) and their Rho GTPase substrates. The collective findings strongly...
journal_title：Cellular signalling
pub_type： 杂志文章,评审
doi：10.1016/j.cellsig.2006.01.022
更新日期：2006-11-01 00:00:00
abstract：:In the canonical model of JAK/STAT signalling STAT transcription factors are activated by JAK mediated tyrosine phosphorylation following pathway stimulation by external cytokines. Activated STAT molecules then homo- or heterodimerise before translocating to the nucleus where they bind to DNA sequences within the prom...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2005.07.006
更新日期：2006-06-01 00:00:00
abstract：:Janus kinase 2 (Jak2) has a pivotal role in erythropoietin (Epo) signaling pathway, including erythrocyte differentiation and Stat5 activation. In the course of screening for critical phosphorylation of tyrosine residues in Jak2, we identified tyrosine 913 (Y(913)) as a novel and functional phosphorylation site, which...
journal_title：Cellular signalling
pub_type： 杂志文章
doi：10.1016/j.cellsig.2008.07.008
更新日期：2008-11-01 00:00:00
abstract：:CC chemokine receptor 5 (CCR5) is a seven-transmembrane, G protein-coupled receptor (GPCR) which regulates trafficking and effector functions of memory/effector T-lymphocytes, macrophages, and immature dendritic cells. It also serves as the main coreceptor for the entry of R5 strains of human immunodeficiency virus (H...
journal_title：Cellular signalling
pub_type： 杂志文章,评审
doi：10.1016/j.cellsig.2004.04.007
更新日期：2004-11-01 00:00:00
