Abstract：
:Inactivation of Simian Virus 40 large T antigen, in cells immortalized with conditional mutants, leads to activation of p53 and apoptosis. We used the mRNA differential display method to identify genes differentially expressed during this process. We found that steady-state levels of mRNA for cytoplasmic actins decreased early during apoptosis. We also showed that, although the steady-state level of the corresponding proteins is not profoundly affected, they are substrates for an interleukin 1-beta converting enzyme (ICE)-like protease activated during the process. However, only a very small fraction of actin is proteolysed during the early stages of apoptosis. The microfilament network is affected and non polymerized actin accumulates in apoptotic bodies after the decrease of mRNA levels, but before a significant amount of actin is cleaved. This suggests that down-regulation of actin genes may be involved in microfilament rearrangements during p53-mediated apoptosis.
journal_name
J Cell Scijournal_title
Journal of cell scienceauthors
Guénal I,Risler Y,Mignotte Bsubject
Has Abstractpub_date
1997-02-01 00:00:00pages
489-95eissn
0021-9533issn
1477-9137journal_volume
110 ( Pt 4)pub_type
杂志文章abstract：:Macroautophagy is a dynamic process whereby portions of the cytosol are encapsulated in double-membrane vesicles and delivered to the lysosome for degradation. Phosphatidylinositol-3-phosphate (PtdIns3P) is concentrated on autophagic vesicles and recruits effector proteins that are crucial for this process. The produc...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.080341
更新日期：2011-03-01 00:00:00
abstract：:Hematopoietic and vascular endothelial cells constitute the circulatory system and are both generated from the ventral mesoderm. However, the molecules and signaling pathways involved in ventral mesoderm formation and specification remain unclear. We found that zebrafish etv5a was expressed in the ventral mesoderm dur...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.132613
更新日期：2013-12-15 00:00:00
abstract：:Mitochondrial homeostasis reflects a dynamic balance between membrane fission and fusion events thought essential for mitochondrial function. We report here that altered expression of the C. elegans BCL2 homolog CED-9 affects both mitochondrial fission and fusion. Although striated muscle cells lacking CED-9 have no a...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.032904
更新日期：2008-10-15 00:00:00
abstract：:Actin assembly is involved in cell motility and intracellular movement of Listeria monocytogenes. Induction of Listeria actin tails is mediated by the surface protein ActA. The N-terminal domain of ActA is sufficient for this function. Cell components known to play a role in the actin-based motility of Listeria are VA...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1998-10-01 00:00:00
abstract：:EPHA2 receptor tyrosine kinase is overexpressed in several human cancer types and promotes malignancy. However, the mechanisms by which EPHA2 promotes tumor progression are not completely understood. Here we report that overexpression of a wild-type EPHA2, but not a signaling-defective cytoplasmic truncation mutant (D...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.017145
更新日期：2008-02-01 00:00:00
abstract：:TANGLED (TAN) is the founding member of a family of plant-specific proteins required for correct orientation of the division plane. Arabidopsis thaliana TAN is localized before prophase until the end of cytokinesis at the cortical division site (CDS), where it appears to help guide the cytokinetic apparatus towards th...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.073676
更新日期：2011-01-15 00:00:00
abstract：:Centriolar satellites are membrane-less structures that localize and move around the centrosome and cilium complex in a microtubule-dependent manner. They play important roles in centrosome- and cilium-related processes, including protein trafficking to the centrosome and cilium complex, and ciliogenesis, and they are...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.196832
更新日期：2017-04-15 00:00:00
abstract：:Despite observations that the lacrimal gland has been identified as the principal source of dimeric immunoglobulin A (dIgA) in tears, the mechanism used by lacrimal gland acinar cells (LGACs) to transcytose dIgA produced by interstitial plasma cells is not well-characterized. This study identifies a transcytotic pathw...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.088906
更新日期：2011-10-15 00:00:00
abstract：:A scanning electron-microscope study has established that there are major modifications in the surface membranes of malignant cells transformed from the pronephric kidney of the frog. Tumours were induced in vivo after exposure of embryos Lucké Herpes virus. A pronephric cell line from normal embryos and 3 tumour cell...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1976-11-01 00:00:00
abstract：:Epithelial-to-mesenchymal transition (EMT) of peritoneal mesothelial cells is a pathological process that occurs during peritoneal dialysis. EMT leads to peritoneal fibrosis, ultrafiltration failure and eventually to the discontinuation of therapy. Signaling pathways involved in mesothelial EMT are thus of great inter...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.071647
更新日期：2010-12-15 00:00:00
abstract：:In human red blood cells, protein 4.1 (4.1R) stabilizes the spectrin-actin network and anchors it to the plasma membrane. To contribute to the characterization of functional roles of 4.1R in nonerythroid cells, we analysed the effect of ectopic expression of 4.1R isoforms on interphase microtubules in fibroblastic cel...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.01544
更新日期：2004-12-01 00:00:00
abstract：:Vertebrate tropomyosins (TMs) are expressed from four genes, and at least 18 distinct isoforms are generated via a complex pattern of alternative RNA splicing and alternative promoters. The functional significance of this isoform diversity is largely unknown and it remains to be determined whether specific isoforms ar...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1999-02-01 00:00:00
abstract：:Podosomes, adhesion structures capable of matrix degradation, have been linked with the ability of cells to perform chemotaxis and invade tissues. Wiskott-Aldrich Syndrome protein (WASp), an effector of the RhoGTPase Cdc42 and a Src family kinase substrate, regulates macrophage podosome formation. In this study, we de...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.051755
更新日期：2009-11-01 00:00:00
abstract：:The forkhead transcription factor FOXN1 is required for normal cutaneous and thymic epithelial development. Mutations in FOXN1 give rise to the nude phenotype in mice, rats and man. However, the genes that are regulated by FOXN1 are unknown. To investigate FOXN1 function we expressed an inducible form of the protein, ...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.01302
更新日期：2004-08-15 00:00:00
abstract：:We uncovered a crucial role for the Aurora kinase A (AURKA)-Twist1 axis in promoting epithelial-to-mesenchymal transition (EMT) and chemoresistance in pancreatic cancer. Twist1 is the first EMT-specific target of AURKA that was identified using an innovative screen. AURKA phosphorylates Twist1 at three sites, which re...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.196790
更新日期：2017-03-15 00:00:00
abstract：:There is a limited number of methods to examine transbilayer lipid distribution in biomembranes. We employed freeze-fracture replica-labelling immunoelectron microscopy in combination with lipid-binding proteins and a peptide to examine both transbilayer distribution and lateral distribution of various phospholipids i...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.163105
更新日期：2015-04-15 00:00:00
abstract：:In order to produce proteins essential for their propagation, many pathogenic human viruses, including SARS-CoV-2 the causative agent of COVID-19 respiratory disease, commandeer host biosynthetic machineries and mechanisms. Three major structural proteins, the spike, envelope and membrane proteins, are amongst several...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.257758
更新日期：2021-01-19 00:00:00
abstract：:Serotonin receptors 5-HT(1A) and 5-HT(7) are highly coexpressed in brain regions implicated in depression. However, their functional interaction has not been established. In the present study we show that 5-HT(1A) and 5-HT(7) receptors form heterodimers both in vitro and in vivo. Foerster resonance energy transfer-bas...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.101337
更新日期：2012-05-15 00:00:00
abstract：:Megasporogenesis in the heterosporous fern Marsilea (Hydropterideae) shows features intermediate between sporogenesis in homosporous ferns and that in heterosporous seed plants. The plastids in the dyads and young spores were associated with tubules 30-35 nm in diameter, probably a specialized form of endoplasmic reti...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1981-10-01 00:00:00
abstract：:During anaphase-I in crane-fly spermatocytes, sister half-bivalents separate and move to opposite poles. When we irradiate a kinetochore spindle fibre with an ultraviolet microbeam, the associated half-bivalent temporarily stops moving and so does the partner half-bivalent with which it was paired during metaphase. To...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1996-01-01 00:00:00
abstract：:Collagen V is a regulatory fibril-forming collagen that forms heterotypic fibrils with collagen I. Deletion of collagen V in the mouse is associated with a lack of fibril assembly in the embryonic mesenchyme, with a resultant lethal phenotype. The current work elucidates the regulatory roles of collagen V during devel...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.091363
更新日期：2011-12-01 00:00:00
abstract：:When human cells enter S-phase, overlapping differential inhibitory mechanisms downregulate the replication licensing factors ORC1, CDC6 and Cdt1. Such regulation prevents re-replication so that deregulation of any individual factor alone would not be expected to induce overt re-replication. However, this has been cha...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.041889
更新日期：2009-04-15 00:00:00
abstract：:Low doses of the muscarinic agonist pilocarpine (0.1-1 microM) and the beta-adrenergic agonist isoproterenol (0.5-4 nM) stimulate a minor regulated secretory pathway for salivary proteins in rat parotid lobules. Newly synthesized proteins (labeled biosynthetically) are selectively discharged, and they are secreted in ...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1996-10-01 00:00:00
abstract：:Tumour necrosis factor receptors (TNF-Rs) and their ligands, tumour necrosis factors, are highly conserved proteins described in all metazoan phyla. They function as inducers of extrinsic apoptotic signalling and facilitate inflammation, differentiation and cell survival. TNF-Rs use distinct adaptor molecules to activ...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.255422
更新日期：2021-01-25 00:00:00
abstract：:The presence of gap junctions in stratified epithelia has now been extensively documented, but there have been few attempts to quantify them. In the present report, samples of hamster cheek pouch mucosa were processed for electron microscopy and electron micrographs from defined basal, spinous and granular layers were...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1984-07-01 00:00:00
abstract：:When a Euglena gracilis in a Ca2+-containing medium is impaled with a microelectrode, the flagellum is instantly ejected. In a Ca2+-free medium to which 1 mM EGTA has been added, the flagellum remains attached to the organism, but it loses activity upon impalement. Externally added ATP at a concentration of 10 mM will...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1977-02-01 00:00:00
abstract：:When the human red cell consumes its ATP, the cell loses its discoid character in favour of a spiculated and eventually a spherical form. This discocyte-echinocyte transformation parallels both degradation of phosphatidylinositol 4,5-bisphosphate and phosphatidic acid but not dephosphorylation of cytoskeletal proteins...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1986-02-01 00:00:00
abstract：:Endothelial integrity relies on a mechanical crosstalk between intercellular and cell-matrix interactions. This crosstalk is compromised in hemorrhagic vascular lesions of patients carrying loss-of-function mutations in cerebral cavernous malformation (CCM) genes. RhoA/ROCK-dependent cytoskeletal remodeling is central...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.216093
更新日期：2018-08-13 00:00:00
abstract：:Mucin expression was analysed, in relation to cell growth, in parental HT-29 cells and in two populations of mucus-secreting HT-29 cells selected by adaptation to methotrexate (HT29-MTX) or 5-fluorouracil (HT29-FU). These two populations express mature mucins that differ in their immunoreactivity to antibodies against...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1993-11-01 00:00:00
abstract：:Using a polyclonal antibody against purified zymogen granule membrane components from rat pancreas a cDNA coding for the 29 kDa protein (ZG29p) was identified by immunoscreening of a hormonally stimulated pancreas cDNA library. Western blot analysis suggests that ZG29p is a pancreas-specific protein and immunofluoresc...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1999-08-01 00:00:00
