Abstract：
:The nucleolar precursor bodies (NPBs) are electrondense, homogeneous, and finely filamentous intranuclear structures occurring in mammalian zygotes during the early postfertilization development and subsequently transforming into nucleoli. In this study we addressed the question if the assembly of the NPBs is correlated with adenosine incorporation into the pro-nuclear chromatin, an event previously reported to precede the beginning of the pronuclear DNA synthetic phase and suggested to reflect an early pronuclear RNA synthesis. The degree of polyspermy was manipulated artificially, and the effects of the resulting changes in the nucleocytoplasmic ratio on adenosine incorporation and the NPB assembly were analyzed using a quantitative autoradiographic examination. The NPB assembly occurred only in pronuclei which incorporated [3H]-adenosine. This [3H]adenosine labeling of pronuclei was not due to DNA replication, but it could be removed by treatment of egg sections with hot trichloracetic acid before autoradiography, a method which quantitatively extracts nucleic acids. With increasing nucleocytoplasmic ratio, the capacity of developing pronuclei to incorporate adenosine was lost progressively and this phenomenon was closely correlated with impairment of the NPB assembly. These findings suggest that an early pronuclear RNA synthesis is required for the development of the NPBs.
journal_name
Exp Cell Resjournal_title
Experimental cell researchauthors
Tesarik J,Kopecny Vdoi
10.1016/0014-4827(90)90050-ksubject
Has Abstractpub_date
1990-11-01 00:00:00pages
153-6issue
1eissn
0014-4827issn
1090-2422pii
0014-4827(90)90050-Kjournal_volume
191pub_type
杂志文章abstract：:Phosphoinositide 3-kinases (PI3Ks) are an evolutionary conserved family of lipid kinases that control cell growth, metabolism and survival. By generating lipid second messengers that interact with specialized lipid-binding domains found in a wide spectrum of signaling molecules, PI3Ks instigate signaling through a net...
journal_title：Experimental cell research
pub_type： 杂志文章,评审
doi：10.1016/j.yexcr.2013.02.021
更新日期：2013-05-15 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：: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：:A novel protein that associates with interphase nucleus and mitotic apparatus (INMAP) was identified by screening HeLa cDNA expression library with an autoimmune serum followed by tandem mass spectrometry. Its complete cDNA sequence of 1.818 kb encodes 343 amino acids with predicted molecular mass of 38.2 kDa and nume...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2009.01.022
更新日期：2009-04-15 00:00:00
abstract：:Intramuscular adipose tissue and fibrous tissue are observed in some skeletal muscle pathologies such as Duchenne muscular dystrophy and sarcopenia, and affect muscle strength and myogenesis. They originate from common fibrogenic/adipogenic cells in the skeletal muscle. Thus, elucidating the regulatory mechanisms unde...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2016.08.023
更新日期：2016-10-01 00:00:00
abstract：:Human cyclin D1 forms complexes with several Cdks, with proliferating cell nuclear antigen, and with a recently discovered 21-kDa inhibitor of Cdk activity. Substrates for cyclin D1/Cdks have not been identified in vivo, but it has been proposed that the D class of cyclins might play a role in regulating the activity ...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1006/excr.1995.1080
更新日期：1995-04-01 00:00:00
abstract：:PHOX2B and its paralogue gene PHOX2A are two homeodomain proteins in the network regulating the development of autonomic ganglia that have been associated with the pathogenesis of neuroblastoma (NB), because of their over-expression in different NB cell lines and tumour samples. We used the SK-N-BE(2)C cell line to sh...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2016.02.014
更新日期：2016-03-01 00:00:00
abstract：:Adaptation to low oxygen conditions is essential for maintaining homeostasis and viability in oxygen-consuming multi-cellular tissues, including solid tumors. Central in these processes are the hypoxia-inducible transcription factors, HIF-1 and HIF-2, controlling genes involved in e.g. glucose metabolism and neovascul...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2009.02.015
更新日期：2009-07-01 00:00:00
abstract：:The precise distribution of DNA within the resting human T lymphocyte nucleolus has been investigated, at the ultrastructural level, by cytochemical and molecular immunocytochemical techniques. The nucleolus is partially enveloped by a layer of condensed chromatin which, at several places, penetrates into the nucleola...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1006/excr.1993.1110
更新日期：1993-04-01 00:00:00
abstract：:The human neuroblastoma cell line SK-N-BE can be induced to differentiate by retinoic acid (RA) or by alpha-difluoromethylornithine (DFMO). The former inducer produces neurite outgrowth, 60% reduction of growth rate, overexpression of neural antigens, and enhanced gamma-aminobutyric acid (GABA) and acetylcholinesteras...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/0014-4827(88)90281-9
更新日期：1988-12-01 00:00:00
abstract：:Patients infected with human immunodeficiency virus type 1 (HIV-1) develop a spectrum of B cell lymphoproliferative disorders ranging from polyclonal B cell activation to B cell lymphomas. While a direct role of Epstein-Barr virus (EBV) is well recognized for most of these lesions, recent findings have suggested that ...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2004.01.018
更新日期：2004-05-01 00:00:00
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：:The phenotypic transition of smooth muscle cells (SMC) from a contractile to a synthetic state appears to be an early event in the pathogenesis of atherosclerosis. We examined the effects of extracellular matrix components on the phenotypic modulation of rabbit arterial SMC in primary culture by flow cytometry. The re...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1006/excr.1993.1016
更新日期：1993-01-01 00:00:00
abstract：:A popular criterion of cell-cell communication in tissue cultures is dye coupling: the ability of the injected fluorescent dye of low molecular weight to be transferred from one cell to another. We report about a new factor which induces cell-to-cell dye coupling in previously uncoupled epithelial sheets. Paradoxicall...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/0014-4827(88)90204-2
更新日期：1988-04-01 00:00:00
abstract：:Elongation factor-1 delta gene expression was analyzed during sea urchin development. EF-1 delta mRNA is present as a single 2.7-kb transcript in unfertilized eggs and in rapidly dividing cleavage stage embryos. It decreases rapidly 6 h after fertilization and then reappears at the gastrula stage as two transcripts of...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1006/excr.1998.4104
更新日期：1998-07-10 00:00:00
abstract：:T51B rat liver epithelial cells were stimulated with extracellular ATP. Changes in cytoplasmic free Ca2+ concentration [( Ca2+]i) were measured by fura-2 both in a large population of cells on coverslips in a cuvette and in single cells in a microscopic system. Extracellular ATP evoked a prompt increase in [Ca2+]i in ...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/0014-4827(89)90198-5
更新日期：1989-03-01 00:00:00
abstract：:We evaluated cellular mechanisms involved in the activation pathway of matrix prometalloproteinase-2 (pro-MMP-2), an enzyme implicated in the malignant progression of many tumor types. Membrane type-1 matrix metalloproteinase (MT1-MMP) cleaves the N-terminal prodomain of pro-MMP-2 thus generating the activation interm...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1006/excr.2000.5118
更新日期：2001-02-15 00:00:00
abstract：:The CDC25Mm gene codes for Ras-guanine nucleotide exchange factors. Four different full-length cDNA clones derived from the same gene and coding for proteins of different sizes that have in common the last 661 amino acids have been isolated from mouse brain. In order to investigate the expression of the products of th...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1006/excr.1994.1048
更新日期：1994-02-01 00:00:00
abstract：:Gallbladder cancer (GBC) is an aggressive malignancy of the bile duct, which is associated with a low (5-year) survival and poor prognosis. The transcription factor HIF-1α is implicated in the angiogenesis, cell survival, epithelial mesenchymal transition (EMT) and invasiveness of GBC. In this study, we have investiga...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2014.11.021
更新日期：2015-03-15 00:00:00
abstract：:We have studied the effects of the phorbol ester tumor promoter 12-O-tetradecanoyl-phorbol-13-acetate (TPA) on the contractility, locomotion, morphology, and adhesion of two mammalian fibroblastic cell lines. Using the silicone rubber substratum technique, we have found that the first observable response to the tumor ...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/0014-4827(88)90024-9
更新日期：1988-07-01 00:00:00
abstract：:Relay of information from the extracellular environment into the cell often results from a peptide growth factor binding to its cognate cell surface receptor; this event is an integral mechanism by which many cellular functions occur, including cell growth, motility, and survival. In recent years, however, this requir...
journal_title：Experimental cell research
pub_type： 杂志文章,评审
doi：10.1016/s0014-4827(02)00096-4
更新日期：2003-03-10 00:00:00
abstract：:We studied the guidance and activation of macrophages from the P388D1 cell line and rat peritoneum by topographic features on a nanometric scale. Cells were plated on plain fused silica substrata or substrata with microfabricated grooves and steps, 30-282 nm deep. The contact of cells with the patterned surface activa...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1006/excr.1996.0098
更新日期：1996-03-15 00:00:00
abstract：:Primary cultures of renal rabbit proximal tubule cells were initiated from a pure suspension of proximal tubule fragments. Proximal tubule cells were grown in a hormone-supplemented, serum-free medium containing low concentrations of antibiotics. Confluent monolayers exhibited multicellular dome formation, indicating ...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/0014-4827(91)90123-c
更新日期：1991-05-01 00:00:00
abstract：:Protein kinases are thought to play a key role in signal transduction and oncogenesis, but little is known about the intranuclear phosphorylation events associated with transformation. Here we report on cell cycle-dependent phosphorylation of cytoskeleton-associated 350 kD protein and the regular interchange in its lo...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/0014-4827(86)90169-2
更新日期：1986-12-01 00:00:00
abstract：:During stress, the mammalian small heat shock protein Hsp27 enters cell nuclei. The present study examines the requirements for entry of Hsp27 into nuclei of normal rat kidney (NRK) renal epithelial cells, and for its interactions with specific nuclear structures. We find that phosphorylation of Hsp27 is necessary for...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2006.10.004
更新日期：2007-01-01 00:00:00
abstract：:We have studied the ability of plasmids encoding a normal human myc protein to stimulate growth of primary rat embryo fibroblasts. We measured growth stimulation by the number of G418-resistant colonies obtained after co-transfection with plasmid pSV2neo and by the percentage of these colonies that grew in long-term c...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/0014-4827(86)90482-9
更新日期：1986-10-01 00:00:00
abstract：:Tendinopathy is a common and disabling condition that is difficult to treat. The pathomolecular events behind tendinopathy remain uncertain. Micro-RNAs (miRNAs, miRs) are short non-coding RNAs that regulate gene expression and may play a role in tendinopathy development. Tenocytes were obtained from human patellar ten...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2019.03.008
更新日期：2019-05-15 00:00:00
abstract：:The casein kinase I (CKI) family consists of at least seven vertebrate genes, some of which can be alternatively spliced. Previously, we have studied the four splice variants of the chicken CKIalpha gene. The four proteins differ only by the presence or absence of two peptides, a 28-amino-acid "L" insert in the cataly...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1006/excr.2001.5324
更新日期：2001-10-01 00:00:00
abstract：:p75NTR is a member of the tumor necrosis superfamily of proteins which is variably associated with induction of apoptosis and proliferation. Cyclin D2 is one of the mediators of cellular progression through G1 phase of the cell cycle. The present study demonstrates the inverse relationship between expression of cyclin...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2006.06.029
更新日期：2006-10-15 00:00:00
abstract：:Olfactory ensheathing cells (OECs) are a type of glial cells with morphological plasticity in the olfactory system. Cultured OECs display the process-bearing and flattened shape. Our previous studies have shown that the frontal application of Slit-2 gradient induced the collapse of leading front, and reversed the soma...
journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1016/j.yexcr.2012.05.024
更新日期：2012-09-10 00:00:00
