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). Moreover, we analyzed GrB induction signalling pathway in TNFalpha- and FasL-stimulated AML cells. The effects of TNFalpha and FasL on GrB expression were specifically mediated by p38MAPK (Mitogen-activated-protein-kinase) activation. Otherwise, TNFalpha and FasL stimulation led to radical oxygen species (ROS) generation and ASK1 (Apoptosis-signal-regulating-kinase-1) activation. Endogenous activation of ASK1 by either H2O2 or thioredoxin (Trx) reductase inhibition had the same effects as TNFalpha and FasL on GrB up regulation. Altogether, our results suggest that TNFalpha- and FasL-stimulated AML cell lytic induction is regulated by a signalling pathway involving sequentially, ROS generation, Trx oxidation, ASK1 activation, p38MAPK stimulation and GrB induction at mRNA and protein levels.
journal_name
Cell Signaljournal_title
Cellular signallingauthors
Guilloton F,Jean C,de Thonel A,Laurent G,Quillet-Mary Adoi
10.1016/j.cellsig.2006.12.005subject
Has Abstractpub_date
2007-06-01 00:00:00pages
1132-40issue
6eissn
0898-6568issn
1873-3913pii
S0898-6568(06)00339-1journal_volume
19pub_type
杂志文章abstract::Heterotrimeric (alphabetagamma) G(s) mediates agonist-induced stimulation of adenylyl cyclase (AC). Cholera toxin (CTx) will ADP-ribosylate the alpha-subunit of G(s) (G(s)alpha). G(s)alpha-deficient cyc(-) membranes were "stripped" of Gbeta. When the stripped cyc(-) were incubated with G(s)alpha and/or Gbetagamma, eac...
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journal_title:Cellular signalling
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doi:10.1016/j.cellsig.2005.04.003
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journal_title:Cellular signalling
pub_type: 杂志文章
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abstract::Exposure of brown fat cells to phenylephrine, an agonist of alpha-1 adrenergic receptors, activates a phospholipase A2 which releases arachidonic acid. Since receptor activation of phospholipase A2 requires calcium, experiments were undertaken to define more precisely the role played by calcium in the regulation of en...
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abstract::Recycling of the majority of agonist-internalized GPCR is dependent on a type I-PDZ "barcode" in their C-tail. The recycling of wild-type (WT) ß1-AR is also dependent on its default "type-1 PDZ barcode", but trafficking of the ß1-AR is inhibited when PKA or its substrate serine at position 312 (Ser312) are inactivated...
journal_title:Cellular signalling
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journal_title:Cellular signalling
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journal_title:Cellular signalling
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journal_title:Cellular signalling
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journal_title:Cellular signalling
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doi:10.1016/j.cellsig.2020.109800
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abstract::We assign a new function to a tumor suppressor NPRL2 that activates the mTOR complex 1 (mTORC1) activity. The positive regulation of mTORC1 activity by NPRL2 is mediated through NPRL2 interaction with Raptor. While NPRL2 interacts with Rag GTPases, RagD in particular, to interfere with mTORC1 activity in amino acid sc...
journal_title:Cellular signalling
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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
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doi:10.1016/j.cellsig.2009.04.006
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abstract::Lovastatin was used to study the role of isoprenylated proteins on stimulus-induced increase of cytosolic Ca2+ in retinoic acid-differentiated U937 and HL-60 cells. Preincubation of the cells with lovastatin for 11-24 h reduced the Ca(2+)-influx induced by PAF of FMLP. The maximal decrease was 60% in U937 cells and 40...
journal_title:Cellular signalling
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abstract::Binding of fibroblast growth factor (FGF) to the high affinity receptor-1 (FGFR-1) leads to activation of its endogenous tyrosine kinase activity. A number of substrates for the FGFR-1 kinase have been identified. Among those, FGF receptor-substrate-2 (FRS-2) was identified by virtue of its interaction with p13suc, a ...
journal_title:Cellular signalling
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doi:10.1016/j.cellsig.2003.09.007
更新日期:2004-04-01 00:00:00
abstract::Although increasing evidence demonstrated that deregulation of mircoRNA-503 (miRNA-503) contributes to tumorigenesis, little is known about the biological role and intrinsic regulatory mechanisms of miR-503 in prostate cancer (PCa). In present study, we found that miR-503 was significantly downregulated in advanced PC...
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abstract::Activation of phosphatidylinositol (PI)-kinase is involved in the regulation of a wide array of cellular activities. The enzyme exists as a dimer, consisting of a catalytic and a regulatory subunit. Five isoforms of the regulatory subunit have been identified and classified into three groups comprising respectively 85...
journal_title:Cellular signalling
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abstract::Type I cGMP-dependent protein kinases (PKGs) translocate to the nucleus to regulate gene expression in some, but not all cell types; we hypothesized that nuclear translocation of PKG may be regulated by extra-nuclear anchoring proteins. The inositol 1,4,5-triphosphate (IP(3)) receptor-associated cGMP kinase substrate ...
journal_title:Cellular signalling
pub_type: 杂志文章
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abstract::SIRT1 is a highly conserved type III acetyltransferase gene located on chromosome 10 in mammals that belong to the Sirtuins family. In order to explore the effects of the SIRT1 gene in the ATDC5 cell line, an RNAi SIRT1 target sequence was designed and synthesized, aimed to knockdown the expression of SIRT1 in ATDC5 b...
journal_title:Cellular signalling
pub_type: 杂志文章
doi:10.1016/j.cellsig.2018.09.016
更新日期:2019-01-01 00:00:00
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journal_title:Cellular signalling
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journal_title:Cellular signalling
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更新日期:2003-06-01 00:00:00
abstract::The N-formyl-L-methionyl-L-leucyl-L-phenylalanine (fMLP)-OMe (1) analogues for-Thp-Leu-Ain-OMe (2), for-Thp-Leu-Phe-OMe (3), for-Met-Leu-Ain-OMe (4), for-Met-Delta(z)Leu-Phe-OMe (5), for-Met-Lys-Phe-For-Met-Lys-Phe (6), for-Met-Leu-Pheol-COMe (7), and for-Nle-Leu-Phe-OMe (8) have been studied. Some of these have been ...
journal_title:Cellular signalling
pub_type: 杂志文章
doi:10.1016/s0898-6568(01)00140-1
更新日期:2001-04-01 00:00:00
abstract::p21(Waf1/Cip1/Sdi1) was originally identified as an inhibitor of cyclin-dependent kinases, a mediator of p53 in growth suppression and a marker of cellular senescence. p21 is required for proper cell cycle progression and plays a role in cell death, DNA repair, senescence and aging, and induced pluripotent stem cell r...
journal_title:Cellular signalling
pub_type: 杂志文章,评审
doi:10.1016/j.cellsig.2010.01.013
更新日期:2010-07-01 00:00:00
abstract::In vitro, little specificity is seen for modulation of effectors by different combinations of Gbetagamma subunits from heterotrimeric G proteins. Here, we demonstrate that the coupling of specific combinations of Gbetagamma subunits to different receptors leads to a differential ability to modulate effectors in vivo. ...
journal_title:Cellular signalling
pub_type: 杂志文章
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更新日期:2000-10-01 00:00:00