Abstract：
:During the first few cleavages of the zebrafish embryo, daughter blastomeres are loosely associated immediately after furrow ingression, but then gradually cohere. Cohesion appears to be cadherin-dependent, as cadherin and beta-catenin are found at the membrane between cohering blastomeres, and blastomeres fail to cohere in calcium-free medium. Cadherin and beta-catenin are not initially found on the blastomere surface, but are deposited specifically at the furrow surface. An array of parallel microtubules is present on either side of the furrow tip during ingression, as seen by confocal microscopy of alpha-tubulin labelled embryos. Transient incubation of embryos in 1 microg/ml nocodazole at the start of furrowing, which causes a loss of the furrow array, inhibits the localization of beta-catenin to the furrow surface but does not prevent furrow ingression. During ingression, intracellular membranes are transported to the furrow, as shown by labelling with DiD or DiOC6(3). Concentration of these membranes near the furrow surface is microtubule-dependent. These findings suggest that microtubules are required for cohesion of blastomeres because they mediate trafficking of intracellular membranes to the furrow surface, where they are exocytosed and allow cohesion via cadherins.
journal_name
J Cell Scijournal_title
Journal of cell scienceauthors
Jesuthasan Ssubject
Has Abstractpub_date
1998-12-18 00:00:00pages
3695-703eissn
0021-9533issn
1477-9137journal_volume
111 ( Pt 24)pub_type
杂志文章abstract：:Dynamin, a microtubule-activated GTPase, has recently been identified as the product of the shibire gene in Drosophila. shi(ts) mutants are defective in synaptic vesicle recycling, which leads to rapid and reversible temperature-sensitive paralysis. In the present study, results from RNase protection assays and analys...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1992-11-01 00:00:00
abstract：:We previously reported that, among the three connexins expressed in chick lens, overexpression of connexin (Cx) 45.6, not Cx43 or Cx56, stimulates lens cell differentiation; however, the underlying mechanism responsible for this effect is unclear. Here, we took advantage of naturally occurring loss-of-gap-junction fun...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.000935
更新日期：2007-10-15 00:00:00
abstract：:Gap junctions (GJs) assembled from connexin (Cx) proteins allow direct cell-cell communication. While phosphorylation is known to regulate multiple GJ functions, much less is known about the role of ubiquitin in these processes. Using ubiquitylation-type-specific antibodies and Cx43 lysine-to-arginine mutants we show ...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.204321
更新日期：2018-08-09 00:00:00
abstract：:Prox1 is a master regulator for the development of lymphatic vasculature and the induction of lymphangiogenesis. In this study, we identified Prox1 as a new target for small ubiquitin-like modifier 1 (SUMO-1). Lysine 556 (K556) was found to be the major sumoylation site for Prox1 in vitro and in vivo. Mutation of this...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.050005
更新日期：2009-09-15 00:00:00
abstract：:Stress can be temporary or chronic, and mild or acute. Depending on its extent and severity, cells either alter their metabolism, and adopt a new state, or die. Fluctuations in environmental conditions occur frequently, and such stress disturbs cellular homeostasis, but in general, stresses are reversible and last onl...
journal_title：Journal of cell science
pub_type： 杂志文章,评审
doi：10.1242/jcs.202002
更新日期：2018-02-14 00:00:00
abstract：:Syntaxin 1C (STX1C), produced by alternative splicing of the stx1A gene, is a soluble syntaxin lacking a SNARE domain and a transmembrane domain. It is unclear how soluble syntaxin can control intracellular membrane trafficking. We found that STX1C affected microtubule (MT) dynamics through its tubulin-binding domain ...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.081943
更新日期：2012-02-15 00:00:00
abstract：:Activation of the N-formyl peptide receptor (FPR) of human neutrophils by ligands such as N-formyl-methionine-leucine-phenylalanine (fMLP) induces mobilization of intracellular calcium, cell adhesion, chemotaxis, superoxide production and degranulation. Chinese hamster ovary (CHO) cells are normally devoid of FPR and ...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1998-07-30 00:00:00
abstract：:Caveolins are membrane proteins that are the major coat proteins of caveolae, specialized lipid rafts in the plasma membrane that serve as scaffolding sites for many signaling complexes. Among the many signaling molecules associated with caveolins are the Src tyrosine kinases, whose activation regulates numerous cellu...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.00806
更新日期：2003-12-01 00:00:00
abstract：:Atherosclerosis depends on risk factors such as hyperlipidemia, smoking, hypertension and diabetes. Although these risk factors are relatively constant throughout the arterial circulation, atherosclerotic plaques occur at specific sites where flow patterns are disturbed, with lower overall magnitude and complex change...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.138313
更新日期：2013-11-15 00:00:00
abstract：:DNA replication in the polytene chromosomes of larval salivary glands of Drosophila hydei has been examined under normal physiological conditions, with or without puromycin, by an autoradiographic procedure using [3H]thymidine. It has been demonstrated that puromycin induces new labelling patterns that can be identifi...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1984-01-01 00:00:00
abstract：:Correct spindle orientation is achieved through signaling pathways that provide a molecular link between the cell cortex and spindle microtubules in an F-actin-dependent manner. A conserved cortical protein complex, composed of LGN (also known as GPSM2), NuMA (also known as NUMA1) and dynein-dynactin, plays a key role...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.214544
更新日期：2018-05-21 00:00:00
abstract：:Rickettsia conorii, the causative agent of Mediterranean spotted fever, is able to attach to and invade a variety of cell types both in vitro and in vivo. Although previous studies show that entry of R. conorii into non-phagocytic cells relies on actin polymerization, little else is known about the molecular details g...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.01382
更新日期：2004-10-01 00:00:00
abstract：:Perilipin family proteins (Plins) coat the surface of intracellular neutral lipid storage droplets in various cell types. Studies across diverse species demonstrate that Plins regulate lipid storage metabolism through recruitment of lipases and other regulatory proteins to lipid droplet surfaces. Mammalian genomes hav...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.104943
更新日期：2012-09-01 00:00:00
abstract：:Integrin-mediated cell adhesion is central to cell survival, differentiation and motility. Many cell responses induced by integrins require both receptor occupancy and receptor aggregation, and appear to be regulated by both biochemical and biophysical means. Multidomain extracellular matrix molecules may serve to fos...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：2002-04-01 00:00:00
abstract：:African trypanosomes undergo extensive changes in cellular morphology, biochemistry and surface antigen expression as they differentiate from their bloodstream form to those forms that colonise the midgut of their tsetse fly vector. If initiated with stumpy-form cells, a non-dividing sub-type of the bloodstream parasi...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1997-10-01 00:00:00
abstract：:To study the influence of the non alpha-helical tail domain of keratins in filament formation, we prepared a truncated keratin 8 mutant, K8/tailless. Using site-directed in vitro mutagenesis we introduced a stop codon in the position coding for amino acid number 417 of the K8/wild-type sequence, thereby deleting 86 am...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1990-10-01 00:00:00
abstract：:Studies of human cell hybrids have provided evidence that the tumorigenicity of a cervical carcinoma (HeLa) is under the control of a putative tumor suppressor on chromosome 11. Using these human cell hybrids, we found a tumor-associated glycosylation change in the glucose transporter GLUT1, which is an N-linked glyco...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1995-12-01 00:00:00
abstract：:Enterotoxigenic Bacteroides fragilis - organisms that live in the colon - secrete a metalloprotease toxin, B. fragilis toxin. This toxin binds to a specific intestinal epithelial cell receptor and stimulates cell proliferation, which is dependent, in part, on E-cadherin degradation and beta-catenin-T-cell-factor nucle...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.03455
更新日期：2007-06-01 00:00:00
abstract：:Nematocysts are explosive organelles found in all Cnidaria. Explosion of nematocyst capsules is driven by the high pressure within the capsule formed by the high concentration of poly-gamma-glutamate in the capsule matrix. Poly-gamma-glutamate is a polyanion that binds cations tightly, including the fluorescent cation...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：2002-02-15 00:00:00
abstract：:Regulation of cell-cell contacts is essential for integrity of the vascular endothelium. Here, a critical role of the F-actin-binding protein drebrin in maintaining endothelial integrity is revealed under conditions mimicking vascular flow. Drebrin knockdown leads to weakening of cell-cell contacts, characterized by l...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.129437
更新日期：2013-08-15 00:00:00
abstract：:Survivin, a human inhibitor of apoptosis protein (IAP), plays an important role in both cell cycle regulation and inhibition of apoptosis. Survivin is expressed in cells during the G(2)/M phase of the cell cycle, followed by rapid decline of both mRNA and protein levels at the G(1) phase. It has been suggested that ce...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：2000-12-01 00:00:00
abstract：:Zoospores of Phytophthora palmivora adhered to a plastic film surface were examined by electron microscopy. Three stages of adhesion were compared: (1) non-adhesive, unencysted zoospores, (2) adhered incipient cysts, and (3) adhered mature cysts. Thin sections of incipient cysts revealed cells attached to the film sur...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1975-06-01 00:00:00
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journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.01419
更新日期：2004-10-15 00:00:00
abstract：:Rat small hepatocytes have been shown to proliferate in culture and to form organoids with differentiated hepatocytes in vitro. To evaluate the degree of polarized transporter differentiation of rat small hepatocytes during 9 weeks of culturing, we studied the time-dependent expression and subcellular localization of ...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.01279
更新日期：2004-08-15 00:00:00
abstract：:The nature, kinetics and cofactor requirements of leukocyte adhesion to cultured vascular cells have been investigated in vitro, using a model system in which leukocyte suspensions are in continuous motion over the cultured cells. Adhesion is assessed by histological examination or by using 51Cr-labelled leukocytes. L...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1978-10-01 00:00:00
abstract：:Mitochondrial DNA (mtDNA) replication and transcription are crucial for cell function, but these processes are poorly understood at the single-cell level. We describe a novel fluorescence in situ hybridization protocol, called mTRIP (mitochondrial transcription and replication imaging protocol), that reveals simultane...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.114322
更新日期：2013-02-15 00:00:00
abstract：:Excitatory amino acid transporter type 3 (EAAT3, also known as SLC1A1) is a high-affinity, Na(+)-dependent glutamate carrier that localizes primarily within the cell and at the apical plasma membrane. Although previous studies have reported proteins and sequence regions involved in EAAT3 trafficking, the detailed mole...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：10.1242/jcs.185496
更新日期：2016-08-15 00:00:00
abstract：:Class-V myosins are two-headed actin-based mechanoenzymes that function in the transport and subcellular localization of organelles and possibly in the outgrowth of cellular processes. To determine which domains of myosin-V are involved in intracellular localization of this motor protein, we have expressed fusions of ...
journal_title：Journal of cell science
pub_type： 杂志文章
doi：
更新日期：1999-09-01 00:00:00
abstract：:Mesenchymal stem cells (MSCs) are among the most promising and suitable stem cell types for vascular tissue engineering. Substantial effort has been made to differentiate MSCs towards vascular cell phenotypes, including endothelial cells and smooth muscle cells (SMCs). The microenvironment of vascular cells not only c...
journal_title：Journal of cell science
pub_type： 杂志文章,评审
doi：10.1242/jcs.167783
更新日期：2015-07-15 00:00:00
abstract：:Oncogenic forms of the non-receptor tyrosine kinase Src alter cell structure, in particular the actin cytoskeleton and the adhesion networks that control cell migration, and also transmit signals that regulate proliferation and cell survival. Recent work indicates that they do so by influencing the RhoA-ROCK pathway t...
journal_title：Journal of cell science
pub_type： 杂志文章,评审
doi：10.1242/jcs.01111
更新日期：2004-03-01 00:00:00
