Abstract：
:The inhibition of apoptosis by Toxoplasma gondii is governed by its modulation of several signaling cascades including the NFkappaappaB and JNK pathways. This is evident in the dysregulation of JNK activation following treatment with UV and TNFalpha, both apoptogenic stimuli. Infection-mediated interference with the JNK cascade was found to be highly reproducible in HeLa cells. In light of emerging evidence regarding cross talk between the JNK and NFkappaB cascades, we examined the impact of infection in wild type and RelA/p65-/- mouse embryonic fibroblasts (MEF). Remarkably, parasite infection failed to significantly impact both UV and TNFalpha-mediated JNK phosphorylation in both cell lines suggesting a cell type specific effect. Furthermore siRNA-mediated knockdown of RelA/p65 failed to impact the parasite mediated effects on stimulus dependent activation of JNK in HeLa cells. Finally, the infection mediated suppression of JNK phosphorylation in HeLa cells did not result in decreased JNK kinase activity. Rather, the reduced levels of phospho-JNK in infected cells correlated with increased phosphatase activity noted by the partial rescue of the phenotype following treatment with okadaic acid. Taken together the results indicate that manipulation of the JNK pathway does not involve NFkappaB and is furthermore not a central component of the parasite enforced block of apoptosis. It further highlights the complexity of these systems and the danger of extrapolating results both within and across pathogen-host cell systems based on limited studies.
journal_name
Exp Cell Resjournal_title
Experimental cell researchauthors
Carmen JC,Southard RC,Sinai APdoi
10.1016/j.yexcr.2008.09.019subject
Has Abstractpub_date
2008-12-10 00:00:00pages
3724-36issue
20eissn
0014-4827issn
1090-2422pii
S0014-4827(08)00387-Xjournal_volume
314pub_type
杂志文章abstract：:Tunicamycin, an inhibitor of one of the earliest steps in the synthesis of N-linked oligosaccharides, prevents bud formation and growth in Saccharomyces cerevisiae cells that are either growing exponentially or recovering from different cell cycle arrests at start. Analysis of tunicamycin-treated cells by flow microfl...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/0014-4827(87)90176-5
更新日期：1987-08-01 00:00:00
abstract：:hnRNP I, also referred to as polypyrimidine tract binding protein, is one of the proteins associated with nascent pre-mRNA in the heterogeneous nuclear ribonucleoprotein (hnRNP) complexes. As for all karyophilic proteins, the nuclear import of hnRNP proteins requires specific sequence determinants that in many instanc...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1006/excr.1997.3677
更新日期：1997-08-25 00:00:00
abstract：:Prenucleolar bodies (PNBs) are transitory structures which serve as building blocks for nucleoli at the transition mitosis/interphase. The assembly of PNBs and their pathway are not clearly understood. To better understand these events, the behavior of the PNB-containing PM-Scl 100 protein was compared with that of ot...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1006/excr.1999.4578
更新日期：1999-09-15 00:00:00
abstract：:Screening for microbial metabolites that induce transcriptional activation of the SV40 promoter resulted in the identification of two known compounds, FR901228 and trichostatin A (TSA). FR901228 is a potent antitumor drug that is currently under clinical investigation. TSA is a specific inhibitor of histone deacetylas...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1006/excr.1998.4027
更新日期：1998-05-25 00:00:00
abstract：:Replication protein A (RPA), a stable complex of three polypeptides, is the single-stranded DNA-binding protein essential for DNA replication in eukaryotic cells. Previous studies of the subcellular distribution and stability of the RPA heterotrimer during the mammalian cell cycle have produced conflicting results. He...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1006/excr.1999.4770
更新日期：2000-02-01 00:00:00
abstract：:When exponentially growing NHIK 3025 cells were shifted from medium containing 30% serum to medium containing 0.03% serum the rate of net protein accumulation was reduced due to both a reduction in the rate of protein synthesis and an increase in the rate of protein degradation. This change in growth conditions increa...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/0014-4827(84)90788-2
更新日期：1984-11-01 00:00:00
abstract：:The altered patterns of expression of gangliosides during density-dependent growth inhibition, oncogenic transformation, and embryogenesis suggest that gangliosides, sialylated membrane glycolipids, may affect cellular proliferation and differentiation. Gangliosides of the "b" pathway of ganglioside synthesis, includi...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1006/excr.1995.1070
更新日期：1995-03-01 00:00:00
abstract：OBJECTIVES:Our purpose was to investigate the role of the nitric oxide (NO) signaling pathway in the regulation of ciliary beat frequency (CBF) in mouse nasal and tracheal epithelial cells. METHODS:We studied the effects of the NO donor l-arginine (L-Arg) and specific inhibitors of the NO signaling pathway on CBF of b...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2011.07.007
更新日期：2011-10-15 00:00:00
abstract：:Exponentially growing Chinese hamster V79-171b lung fibroblasts seeded at high density on plastic (approximately 7 x 10(3) cells/cm2) flatten, elongate, and produce significant amounts of extracellular fibronectin. When lysed in weak alkali/high salt, the rate of DNA denaturation following exposure to ionizing radiati...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/0014-4827(91)90105-4
更新日期：1991-04-01 00:00:00
abstract：:Bone morphogenetic proteins (BMPs) are multifunctional signaling molecules that have gained increasing interest in cancer research. To obtain a systematic view on BMP signaling in pancreatic cancer we first determined the mRNA expression levels of seven BMP ligands (BMP2-BMP8) and six BMP specific receptors in pancrea...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2011.06.001
更新日期：2011-09-10 00:00:00
abstract：:In most existing transgenic mouse models developed for the study of specific genes in the skin, the goal has been to target transgene expression to defined populations of cells in the cutaneous epithelium. Keratin promoters have been especially useful for this purpose. In some instances, however, it may be desirable t...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1006/excr.1998.4175
更新日期：1998-10-10 00:00:00
abstract：:Neural stem cells change their characteristics over time during development: they initially proliferate only and then give rise to neurons first and glial cells later. In the absence of the repressor-type basic helix-loop-helix (bHLH) genes Hes1, Hes3 and Hes5, neural stem cells do not proliferate sufficiently but pre...
journal_title：Experimental cell research
pub_type： 杂志文章,评审
doi：10.1016/j.yexcr.2005.03.015
更新日期：2005-06-10 00:00:00
abstract：:Polycystin-2 (PC2, TRPP2) is a nonselective cation channel whose dysfunction is associated with the onset of autosomal dominant polycystic kidney disease (ADPKD). PC2 contributes to Ca2+ transport and cell signaling in renal epithelia and other tissues. Little is known however, as to the external Ca2+ regulation of PC...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2016.11.004
更新日期：2017-01-01 00:00:00
abstract：:Differentiation of endoderm into intestinal epithelium is initiated at E13.5 of mouse development when there are significant changes in morphology resulting in the conversion of undifferentiated stratified epithelium into a mature epithelial monolayer. Here we demonstrate that monolayer formation is associated with th...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2004.10.006
更新日期：2005-02-15 00:00:00
abstract：:We have compared dye coupling in pairs of small (less than 10 microns in diameter) and large (greater than 20 microns in diameter) keratinocytes isolated from normal human epidermis, using Lucifer yellow microinjection. Under control conditions, dye coupling was found in only 1 out of the 25 small pairs tested, wherea...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/0014-4827(92)90294-i
更新日期：1992-08-01 00:00:00
abstract：:A method for the in vitro perfusion of isolated guinea-pig mammary tissue is described that allows the radiolabelling of secretory and membrane proteins. Glands were depleted of methionine, labelled with [35S]methionine for 5 min and perfused with medium containing an excess of unlabelled methionine for varying times....
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/0014-4827(84)90369-0
更新日期：1984-03-01 00:00:00
abstract：:Mitochondrial DNA (mtDNA) represents 0.15% of the total cell DNA (at least an order of magnitude less than in liver or heart) of rabbit articular chondrocytes. Besides the already well-documented low respiratory activity, chondrocyte differentiation thus involves a specific control of mitochondrial biogenesis. When tr...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/0014-4827(87)90172-8
更新日期：1987-08-01 00:00:00
abstract：:The ST6Gal-I glycosyltransferase, which adds alpha2-6-linked sialic acids to glycoproteins, is overexpressed in colon adenocarcinoma, and enzyme activity is correlated with tumor cell invasiveness. Previously we reported that forced expression of oncogenic ras in HD3 colonocytes causes upregulation of ST6Gal-I, leadin...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2008.07.021
更新日期：2008-10-01 00:00:00
abstract：:With the aim of discovering new molecular interactions of the tight junction protein ZO-2, a two-hybrid screen was performed on a human kidney cDNA library using as bait the middle segment of ZO-2. Through this assay we identified a 24-kDa novel protein herein named ZASP for ZO-2 associated speckle protein. ZO-2/ZASP ...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2010.09.008
更新日期：2010-11-15 00:00:00
abstract：:Over the last two decades molecular studies of inherited tumor syndromes that are associated with the development of kidney cancer have led to the identification of genes and biochemical pathways, which play key roles in the malignant transformation of renal epithelial cells. Some of these findings have broad biologic...
journal_title：Experimental cell research
pub_type： 杂志文章,评审
doi：10.1016/j.yexcr.2012.02.026
更新日期：2012-05-15 00:00:00
abstract：:The giant protein hFat1, a member of the cadherin superfamily, has been proposed to play roles in cerebral development, glomerular slit formation, and also to act as a tumor suppressor, but its mechanisms of action have not been elucidated. To examine functions of the transmembrane and cytoplasmic domains, they were e...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2005.03.006
更新日期：2005-07-01 00:00:00
abstract：:Oligomerization of Fas receptor by its ligand, FasL, activates a signaling cascade that leads to apoptosis of Fas bearing cells. Interestingly, many epithelia coexpress Fas and FasL, yet FasL does not trigger Fas present on the same or neighboring cells to induce spontaneous apoptosis. Here, we show that Fas and FasL ...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/s0014-4827(02)00056-3
更新日期：2003-04-01 00:00:00
abstract：:Despite over 30 years of work, the fundamental structure of eukaryotic chromatin remains controversial. Here, we review the roots of this controversy in disparities between results derived from studies of chromatin in nuclei, chromatin isolated from nuclei, and chromatin reconstituted from defined components. Thanks t...
journal_title：Experimental cell research
pub_type： 杂志文章,评审
doi：10.1016/j.yexcr.2012.02.014
更新日期：2012-07-15 00:00:00
abstract：:Carbohydrate-specific monoclonal antibodies were used to demonstrate the expression of a new membrane glycoprotein on F9 murine embryonal carcinoma cells. Sialyl LeX was detected using monoclonal antibody FH6 in a sensitive, cell monolayer radioimmunoassay. The antigen codistributed in gel filtration of a crude homoge...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/0014-4827(89)90061-x
更新日期：1989-02-01 00:00:00
abstract：:The degree of polymorphism, i.e., DNA sequence divergence, of short AT-rich tandemly arranged simple sequence repeats at or near promoters and 5'- untranslated regions of mRNA may quantitatively regulate transcription of tissue-specific genes. Less polymorphic repeats allow greater gene expression. Preferential bindin...
journal_title：Experimental cell research
pub_type： 杂志文章,评审
doi：10.1016/j.yexcr.2020.111969
更新日期：2020-05-15 00:00:00
abstract：:Previously we showed that the potocytosis of 5-methyltetrahydrofolate is dependent on the acidification of plasmalemmal vesicles created each time a caveolae, closes off from the cell surface. We now report that bafilomycin A1, which is a specific inhibitor of the V-type proton ATPase, inhibits 5-methyltetrahydrofolat...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1006/excr.1996.0133
更新日期：1996-05-01 00:00:00
abstract：:We previously showed that clonable skeletal myogenic cells can be derived from the embryonic aorta but become very rare in the more mature and structured fetal aorta. The aim of this study was to investigate whether, during fetal and postnatal development, these myogenic progenitors progressively disappear or may rath...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/s0014-4827(03)00314-8
更新日期：2003-11-01 00:00:00
abstract：:Intermediate filaments (IFs), desmosomes, and their associates are built from multidomain proteins that form cytoskeletal scaffolds in the cytoplasm and the nucleus of vertebrate tissues. Mutations in more than 80 genes cause monogenic disorders that include severe skin fragility, myopathies, neurodegeneration, and pr...
journal_title：Experimental cell research
pub_type： 杂志文章,评审
doi：10.1016/j.yexcr.2004.08.018
更新日期：2004-11-15 00:00:00
abstract：:Coagulation Factor (F)Xa is a serine protease that plays a crucial role during blood coagulation by converting prothrombin into active thrombin. Recently, however, it emerged that besides this role in coagulation, FXa induces intracellular signaling leading to different cellular effects. Here, we show that coagulation...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2007.04.014
更新日期：2007-07-15 00:00:00
abstract：:Cancer stem cells (CSCs) are a subpopulation of chemoresistant cells that play a critical role in disease recurrence following chemotherapy. It has been reported that microRNA-133b (miR-133b) acts as a tumor suppressor in colorectal cancer (CRC). However, whether miR-133b is associated with CRC stemness and chemoresis...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2019.111597
更新日期：2019-12-01 00:00:00
