Abstract:
:To determine whether the micronucleus makes essential contributions during asexual reproduction, observations were made on cells of Euplotes octocarinatus from which the micronucleus had been removed with a micropipette. Most cells underwent one postenucleation division, then became arrested in macronuclear G1, slowed down in food uptake, developed macronuclear deformations, and finally died. Such cells could be rescued if a micronucleus was reimplanted before macronuclear deformations had developed. When provided with a new micronucleus, cells initiated macronuclear DNA synthesis about 12-16 h later. The data suggest that the micronucleus is involved in the control of the cell's transition from macronuclear G1 to S, and a model is proposed which postulates that in Euplotes macronuclear DNA synthesis is initiated when a micronucleus-encoded "initiator protein" has accumulated to a critical amount.
journal_name
Exp Cell Resjournal_title
Experimental cell researchauthors
Mikami K,Kuhlmann HW,Heckmann Kdoi
10.1016/0014-4827(85)90100-4subject
Has Abstractpub_date
1985-12-01 00:00:00pages
445-59issue
2eissn
0014-4827issn
1090-2422journal_volume
161pub_type
杂志文章abstract::The mitochondrion imports and processes the vast majority of the proteins that constitute its structural elements and metabolic pathways. To study mitochondrial precursor processing in the context of the cellular environment, we employed the baculovirus expression system to overexpress the prototypical precursor prote...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1998.4331
更新日期:1999-02-01 00:00:00
abstract::Porcine brain microvascular endothelial cells (PBMEC) were isolated from fresh brains by several enzymatic digestion steps followed by a gradient centrifugation. Cells of the primary culture were transfected with pRNS-1, encoding for the small and large T-antigens of SV 40, by means of lipofection. After selection wit...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1996.0298
更新日期:1996-10-10 00:00:00
abstract::Our previous studies have showed that tumor-derived autophagosomes (termed "DRibbles") induce B cell activation, resulting in antibody production and cytokine secretion. Unexpectedly, we found that unfractionated splenocytes produced a higher level of antibody and cytokine than that of purified B cells. In the current...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2014.10.015
更新日期:2015-02-15 00:00:00
abstract::The involvement of polyamines in cytokinesis has been examined in eggs of the amphibian X. laevis. Microinjection of spermine or spermidine into unfertilized eggs induced a shortening of the first division cycle and early formation of cleavage-like constrictions. Eggs were activated by injection and developed furrows ...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(84)90593-7
更新日期:1984-02-01 00:00:00
abstract::In the human lymphoblastic cell line KE 37, Northern blot analysis with cDNA probes for human regulatory subunits RII alpha RII beta of the cAMP-dependent protein kinase (A-kinase) type II and immunoblotting or immunoprecipitation studies with several antibodies directed against RII alpha and RII beta show that these ...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1993.1029
更新日期:1993-02-01 00:00:00
abstract::Mdg1/ERdj4, a mammalian chaperone that belongs to the HSP40 protein family, has been reported to be located in the endoplasmic reticulum (ER), is induced by ER stress, and protects ER stressed cells from apoptosis. Here we show that under normal physiological conditions, Mdg1/ERdj4 is expressed at various levels in th...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/s0014-4827(03)00316-1
更新日期:2003-10-15 00:00:00
abstract::We established a differentiation method for homogeneous α7 integrin-positive human skeletal muscle stem cell (α7(+)hSMSC)-derived osteoblast-like cells with bone morphogenetic protein (BMP)-2. To explore the early signaling cascade for osteoblastic differentiation, we examined the upregulation of autophagy-related gen...
journal_title:Experimental cell research
pub_type: 杂志文章,收录出版
doi:10.1016/j.yexcr.2016.07.002
更新日期:2016-09-10 00:00:00
abstract::The long non-coding RNAs (lncRNAs) have gained much attention due to its essential roles in molecular regulation. As one of the classic lncRNAs, H19 is strongly expressed during embryogenesis and plays a crucial biological function during development. Mesenchymal stem cells (MSCs) are an ideal cell source for tissue e...
journal_title:Experimental cell research
pub_type: 杂志文章,评审
doi:10.1016/j.yexcr.2017.09.007
更新日期:2017-11-15 00:00:00
abstract::Recently, we isolated 4 distinct kinds of single chain antibody against human EGF receptor (EGFR) after screening the Keio phage display scFv library by using two methods of target-guided proximity labeling. In the current study, these monovalent scFv antibodies were converted to bivalent IgGs of humanized forms (hIgG...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2013.03.002
更新日期:2013-05-01 00:00:00
abstract::SIRT6, with both deacetylase and ADP-ribosyltransferase activities, is predominantly expressed in the nucleus. It has been revealed that SIRT6 regulates various biological functions including metabolism, aging and stress resistance. This study aims to investigate the role of SIRT6 in vascular inflammation and it molec...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2017.05.001
更新日期:2017-08-01 00:00:00
abstract::Microsomal triglyceride transfer protein (MTP) is a heterodimeric complex consisting of a unique large 97-kDa protein and the multifunctional 58-kDa protein disulfide isomerase (PDI). It plays an essential role in the assembly of lipoproteins by shuttling lipids between phospholipid membranes. Based on cell fractionat...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2004.05.038
更新日期:2004-10-15 00:00:00
abstract::Lithium (Li+) has been used in the treatment of manic-depressive disorders for several decades. More recently, Li+ has been shown to affect the signaling pathway of various neurotransmitters and growth/neurotrophic factors. We examined the effect of Li+ on the survival of cerebellar granule neurons in culture. Treatme...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1994.1095
更新日期:1994-04-01 00:00:00
abstract::The epidermal growth factor (EGF) receptor is well known as a mediator of mitogenic signaling and its tyrosine kinase activity has been suggested as a viable target in cancer chemotherapy. To explore the consequences of abolishing the kinase activity of this receptor, we have utilized a potent and specific inhibitor o...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1997.3571
更新日期:1997-06-15 00:00:00
abstract::In dog thyrocytes in primary culture, thyrotropin (TSH), acting through cyclic AMP, induces proliferation and differentiation expression, while tetradecanoylphorbol acetate (TPA) or epidermal growth factor (EGF) induces proliferation and dedifferentiation. In this work, we have investigated the regulation of mRNA expr...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1994.1294
更新日期:1994-10-01 00:00:00
abstract::Autophagy is a cellular pathway involved in protein and organelle degradation. It is relevant to many types of cellular homeostasis and human diseases. High level of glucose is known to inflict podocyte injury, but little is reported about the relationship between high concentrations of glucose and autophagy in these ...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2013.01.018
更新日期:2013-04-01 00:00:00
abstract::The adaptor protein Shb has previously been shown to regulate apoptosis in response to cytokines and inhibitors of angiogenesis although the mechanisms governing these effects have remained obscure. We currently demonstrate interactions between Shb and c-Abl and that Shb regulates c-Abl kinase activity. The data sugge...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2006.10.011
更新日期:2007-01-15 00:00:00
abstract::Nuclear pore complexes (NPCs) provide the only sites for macromolecular transport between nucleus and cytoplasm. The nucleoporin p62, a component of higher eukaryotic NPCs, is located at the central gated channel and involved in nuclear trafficking of various cargos. p62 is organized into an N-terminal segment that co...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2006.04.007
更新日期:2006-08-01 00:00:00
abstract::Filamin is a well-characterized actin-associated protein first isolated from chicken smooth muscle. Subsequently, this polypeptide and its nonmuscle homolog actin-binding protein have been shown to be expressed in avian muscle tissue, mammalian smooth muscle, mammalian macrophages and other blood cell types, as well a...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1993.1317
更新日期:1993-12-01 00:00:00
abstract::We have previously demonstrated that transient blocking of DNA synthesis with drugs such as 1-beta-D-arabinofuranosylcytosine results in some segments of the chromosomal DNA being replicated more than once in a single cell cycle. One explanation for this phenomenon might be that it is due to a perturbation of the cell...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(83)90283-5
更新日期:1983-08-01 00:00:00
abstract::The expressions of the protooncogenes c-jun and jun D have been investigated in dog thyrocytes in a primary culture whose proliferation is stimulated by three distinct intracellular signaling pathways (1) the thyrotropin (TSH) or forskolin-cyclic-AMP-mediated cascade; (2) the protein kinase C pathway activated by diac...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(91)90253-q
更新日期:1991-10-01 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::A cell culture model stimulating the genetic deficiency of glucocerebrosidase has been developed, utilizing macrophages and conduritol B epoxide (CBE), the specific irreversible inhibitor of the enzyme. Rat peritoneal macrophage glucocerebrosidase was completely inhibited when cells were treated with 10 microM CBE for...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(87)90019-x
更新日期:1987-02-01 00:00:00
abstract::We have studied the use of electrofusion to obtain hybridomas producing antigen-specific antibodies after immunization of murine lymphocytes in vitro. Under optimal conditions fusion frequencies of the order of magnitude of 10(-3) were obtained, which is approximately 80-fold higher than the mean value obtained with f...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(89)90405-9
更新日期:1989-08-01 00:00:00
abstract::Centrosomes, the main microtubule-organizing centers (MTOCs) in most animal cells, are important for many cellular activities such as assembly of the mitotic spindle, establishment of cell polarity, and cell movement. In nuclear transfer (NT), MTOCs that are located at the poles of the meiotic spindle are removed from...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2005.02.009
更新日期:2005-05-15 00:00:00
abstract::Seven continuous cell lines have been established in vitro from lethal embryos produced by the female sterile mutant mh 1182 of Drosophila melanogaster. Six lines show haploid metaphases. Karyotype analysis revealed a high level of aneuploid cells with frequent chromosome fragments. In three lines, haploid cells were ...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(84)90371-9
更新日期:1984-03-01 00:00:00
abstract::Colony stimulating factor-1 (CSF-1) and the CSF-1 receptor (the c-fms proto-oncogene product) are expressed during the proliferation of the L6 alpha 1 rat myogenic cell line and both are down-regulated during the differentiation to myotubes. Biologically active CSF-1 was shown to be secreted into the culture medium by...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1995.1149
更新日期:1995-05-01 00:00:00
abstract::Polo-like kinases (Plks) are essential for progression through mitosis. The activity of these kinases peak during M phase and this activation has been attributed to phosphorylation. Kinases capable of activating Plks in vitro have been previously identified both in mammalian cells and in Xenopus laevis oocytes (SLK an...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2005.10.033
更新日期:2006-02-01 00:00:00
abstract::Insulin-like growth factor-1 (IGF-1) and its receptor (IGF-1R) are required for cell proliferation in vitro, raising the possibility that an autocrine IGF-1-IGF-1R system may be present in vivo and become activated in the viable ventricular myocytes shortly after infarction. Therefore, following the in vivo documentat...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1994.1224
更新日期:1994-08-01 00:00:00
abstract::Homologous desensitization of responses to bombesin in small cell lung cancer cells can be mimicked by protein kinase C-activating phorbol esters. We show that phorbol ester-induced desensitization can be blocked by prior treatment with the protein kinase C inhibitor staurosporine or prolonged pretreatment with phorbo...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1993.1327
更新日期:1993-12-01 00:00:00
abstract::A heterogeneous RNP structure has been isolated from rat liver nuclei by a method previously used for the isolation of 30S RNP complexes carrying heterogeneous RNA (hnRNA) [1]. The RNP sediments in sucrose gradients with s-values of 70-110S. Formaldehyde-fixed preparations band at Q = 1.40 in isopycnic CsCl gradients....
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(85)90165-x
更新日期:1985-03-01 00:00:00