Abstract:
:Using S1 nuclease protection assays, we have examined the representation of cell cycle-dependent H4 histone RNAs in the nuclear matrix and nonmatrix nuclear fractions of human cells. Cytoplasmic and nuclear fractions were prepared from exponentially growing HeLa S3 cells by double detergent (sodium deoxycholate and NP40) lysis. The nuclear matrix and nonmatrix nuclear fractions were then prepared by digestion of nuclei with RNase-free DNase I and subsequent high-salt [0.4 M (NH4)2SO4] extraction. Subcellular fractions were characterized by 1) DNA, RNA, and protein composition; 2) electrophoretic analysis of the proteins in each fraction; 3) the representation of 45S ribosomal RNA precursors and processed 18S and 28S ribosomal RNAs; and 4) the presence of mitochondrial RNAs. In contrast to ribosomal and messenger RNA precursors, which are largely associated with the nuclear matrix, the human H4 histone RNAs in the nucleus were found predominantly in the nonmatrix nuclear fraction. The presence of H4 histone RNA in the nonmatrix nuclear fraction appeared to be coupled to DNA replication, since inhibition of DNA synthesis by hydroxyurea resulted in a loss of histone RNA from the nucleus. Our results suggest either that the association of histone RNAs with the nuclear matrix is very transient or that posttranscriptional modifications of the rapidly processed histone gene transcripts do not involve the nuclear matrix.
journal_name
J Cell Physioljournal_title
Journal of cellular physiologyauthors
Bandyopadhyay R,Stein G,Stein Jdoi
10.1002/jcp.1041280229subject
Has Abstractpub_date
1986-08-01 00:00:00pages
345-51issue
2eissn
0021-9541issn
1097-4652journal_volume
128pub_type
杂志文章abstract::It has been reported that p21, p53, and p16 affect the cell cycle and cell senescence. However, their roles in keratinocyte senescence are not clear. We established primary keratinocyte strains from 15 donors and maintained them until replicative senescence; their population doublings ranged from 5.7-45.2. These strai...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4652(199904)179:1<40::AID-JCP5>
更新日期:1999-04-01 00:00:00
abstract::Using a recently described technique of electron spin resonance spectroscopy, we determined the rate of transbilayer mobility (flip) of the four major simian-erythrocyte phospholipids in the erythrocyte membrane after infection by Plasmodium knowlesi. The development of the malarial parasite induces a very large incre...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041350113
更新日期:1988-04-01 00:00:00
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journal_title:Journal of cellular physiology
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更新日期:2021-01-09 00:00:00
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journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041520305
更新日期:1992-09-01 00:00:00
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journal_title:Journal of cellular physiology
pub_type: 杂志文章
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更新日期:2005-02-01 00:00:00
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journal_title:Journal of cellular physiology
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更新日期:2017-03-01 00:00:00
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journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.10032
更新日期:2002-01-01 00:00:00
abstract::Very little is known about the effects of pressure within the vascular system on EC phenotype. To study this, bovine aortic EC were seeded on rat type I collagen plates (2,000/cm2) and allowed to attach for 24 hours. The cells were exposed to either atmospheric, 40, 80, or 120 mm Hg pressure by placing them in a plexi...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041580117
更新日期:1994-01-01 00:00:00
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journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041650213
更新日期:1995-11-01 00:00:00
abstract::Incubation of isolated rat soleus and EDL muscles in the presence of 10 mM leucine resulted in a decreased proteolytic rate as measured by the release of tyrosine into the incubation medium. The effect of this branched-chain amino acid (BCAA) is associated with a decreased activity of the lysosomal proteases and a dec...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/1097-4652(200009)184:3<380::AID-JCP13>3.0.
更新日期:2000-09-01 00:00:00
abstract::Many mammalian SWI/SNF complexes use Brahma-related gene 1 (Brg1) as a catalytic subunit to remodel nucleosomes for transcription regulation. In several mesenchymal cells and tissues, expression of a defective Brg1 protein negates the normal activity of the SWI/SNF complex and delays or blocks differentiation. To inve...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.20432
更新日期:2006-01-01 00:00:00
abstract::The existence of cancer stem cells is debatable in numerous solid tumors, yet in leukemia, there is compelling evidence of this cell population. Leukemic stem cells (LSCs) are altered cells in which accumulating genetic and/or epigenetic alterations occur, resulting in the transition between the normal, preleukemic, a...
journal_title:Journal of cellular physiology
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更新日期:2020-06-01 00:00:00
abstract::Nonalcoholic fatty liver disease (NAFLD) is one of the main liver diseases today, and may progress to steatohepatitis, cirrhosis, and hepatocellular carcinoma. Some studies have shown the beneficial effects of aerobic exercise on reversing NAFLD. To verify whether chronic aerobic exercise improves the insulin resistan...
journal_title:Journal of cellular physiology
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更新日期:2017-05-01 00:00:00
abstract::Short term, carrier mediated transport of D-glucose, L-leucine and L-lysine by guinea pig peritoneal macrophages was characterized. Analysis of the amino acid transport demonstrated two-limbed double reciprocal plots suggesting two transport systems for each amino acid. The low concentration limb of the curves establi...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1040930114
更新日期:1977-10-01 00:00:00
abstract::Scientists of numerous medical and life science disciplines met in Siena, Italy to discuss the latest proceedings in basic and clinical research. General models of interconnected linear and back-feeding cell-cycle control pathways provide a basis for applied molecular research. Cell-cycle determining factors essential...
journal_title:Journal of cellular physiology
pub_type:
doi:10.1002/1097-4652(200012)185:3<481::AID-JCP20>3.0.
更新日期:2000-12-01 00:00:00
abstract::The Pur proteins are an ancient family of sequence-specific single-stranded nucleic acid-binding proteins. They bind a G-rich element in either single- or double-stranded nucleic acids and are capable of displacing the complementary C-rich strand. Recently several reports have described Pur family member knockouts, mu...
journal_title:Journal of cellular physiology
pub_type: 杂志文章,评审
doi:10.1002/jcp.24237
更新日期:2013-05-01 00:00:00
abstract::We compared the effects of endothelial-synthesized matrix and purified matrix molecules on pericyte (PC) and aortic smooth muscle cell (SMC) growth, heparin sensitivity, and contractile phenotype in vitro. When PC are plated on endothelial-synthesized (EC) matrix, cell number is, on average, 3.1-fold higher than ident...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041550220
更新日期:1993-05-01 00:00:00
abstract::Ornithine decarboxylase (ODC) activity usually rises to a peak a few hours after a trophic stimulus. The stimulation of ODC has been shown to depend on extracellular calcium in several in vitro eukaryotic systems. We have investigated the effect of calcium concentration on ODC activity and have found that ODC is stimu...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
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更新日期:1984-01-01 00:00:00
abstract::Embryo implantation is essential for normal pregnancy, and the process of decidualization is critical for embryo implantation. However, the mechanism of decidualization during early pregnancy is still unknown. Forkhead box O3a (FOXO3a) is the most important functional transcription factor of the forkhead box family an...
journal_title:Journal of cellular physiology
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abstract::Fas, which functions to initiate a signal causing apoptosis, is expressed in epithelia, thus, suggesting a role in controlling cell number during states of cell and matrix turnover. In view of this, we hypothesized that cell-matrix interactions may be an important determinant of Fas expression in epithelial cells. To ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4652(199803)174:3<285::AID-JCP2
更新日期:1998-03-01 00:00:00
abstract::Nucleotide receptors signaling affects cell proliferation, with possible implications on tumorigenic processes. However, molecular targets and action mechanisms of the extracellular nucleotides are still poorly elucidated. We have previously shown in ARO cells that APE1/Ref-1, a transcriptional coactivator responsible...
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更新日期:2006-10-01 00:00:00
abstract::Protein kinase C and mitogen-activated protein (MAP) kinase are expressed in all smooth muscle cells and believed to be important in several physiologically relevant properties of this muscle. Our goal was to determine if protein kinase C and MAP kinase are activated by a simple increase in cellular Ca(2+) and to dete...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4652(199905)179:2<208::AID-JCP1
更新日期:1999-05-01 00:00:00
abstract::NIH-3T3 cells transformed by the EJ-ras oncogene display reduced platelet-derived growth factor (PDGF)-stimulated phospholipase C activity as measured by inositol 1,4,5-triphosphate (IP3) synthesis and Ca2+ mobilization. The lack of PDGF-stimulated Ca2+ mobilization in EJ-ras transformed cells is not due to a loss of ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041390216
更新日期:1989-05-01 00:00:00
abstract::The role of the plasma membrane potential (delta psi p) in the commitment to differentiation of murine erythroleukemia (MEL) cells has been studied by analyzing the ionic basis and the time course of this potential in the absence or the presence of different types of inducers. delta psi p was determined by measuring t...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041320302
更新日期:1987-09-01 00:00:00
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journal_title:Journal of cellular physiology
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更新日期:2006-05-01 00:00:00
abstract::Cancer is one of the common lifestyle diseases and is considered to be the leading cause of death worldwide. Epstein-Barr virus (EBV)-infected individuals remain asymptomatic; but under certain stress conditions, EBV may lead to the development of cancers such as Burkitt's and Hodgkin's lymphoma and nasopharyngeal car...
journal_title:Journal of cellular physiology
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journal_title:Journal of cellular physiology
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更新日期:2002-09-01 00:00:00
abstract::Selenium has been associated with cancer prevention. Despite vast knowledge of selenium effect on various health conditions, functional characterization of selenium metabolic enzymes on cellular physiology has been limited. Therefore, to gain insight into the mechanisms underlying cancer prevention by selenium, we inv...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.20714
更新日期:2006-10-01 00:00:00
abstract::Repetitive mechanical stimulation of cultured avian skeletal muscle increases the synthesis of prostaglandins (PG) E2 and F2 alpha which regulate protein turnover rates and muscle cell growth. These stretch-induced PG increases are reduced in low extracellular calcium medium and by specific phospholipase inhibitors. M...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041550109
更新日期:1993-04-01 00:00:00