Abstract:
:The cellular targets for the Kirsten murine sarcoma virus (KiMSV)-transforming protein, p21ras, are unknown. Other studies have indicated that the mature form of p21 is distributed diffusely on the cytoplasmic face of the plasma membrane. However, after fixation without buffer washes, indirect immunofluorescent staining of sparse cultures revealed a particularly well preserved cellular architecture and a strikingly heterogeneous subcellular distribution of p21 in transformed normal rat kidney (NRK) cells but not in their untransformed counterparts. The transformed cells included A KiMSV-transformed NRK line. NRK cells newly transformed with KiMSV. A temperature-sensitive (ts) KiMSV-transformed NRK line. An uninfected, spontaneously transformed NRK line in which p21 was neither phosphorylated nor overproduced. In the tsKNRK line p21 was abundant at both permissive and non-permissive temperatures; however, its distribution was heterogeneous at the permissive temperature only. Observation of this array of cells indicates that the transformation-associated p21 distribution does not require overexpression of the gene, nor phosphorylation of the protein, nor the viral oncogene. Furthermore, it is reversible in the tsKNRK cells, and so appears to be highly correlated with acquisition of a transformed morphology. Accumulations of p21 occurred preferentially in subcellular locations similar to those where ruffles were observed by phase contrast microscopy and lamellar and villous extensions were observed by scanning electron microscopy (SEM). Since enhanced ruffling is a morphological correlate of transformation in a variety of cells, the distribution of p21 observed here may relate to its function as a transforming molecule.
journal_name
Exp Cell Resjournal_title
Experimental cell researchauthors
Myrdal SE,Auersperg Ndoi
10.1016/s0014-4827(85)80017-3subject
Has Abstractpub_date
1985-08-01 00:00:00pages
441-50issue
2eissn
0014-4827issn
1090-2422journal_volume
159pub_type
杂志文章abstract::Strategies for correct diagnosis, treatment evaluation and recurrence prediction are important for the prognosis and mortality rates among cancer patients. In spite of major improvements in clinical management, gastrointestinal stromal tumors (GISTs) can still be deadly due to metastasis and recurrences, which confirm...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2015.05.004
更新日期:2015-08-01 00:00:00
abstract::Using hybridization in situ with a ribo-probe recognizing transcripts of the chicken alpha A globin gene, we show here that in proliferating AEV-transformed erythroblasts this gene is strongly transcribed, but the corresponding transcripts are retained in the nuclei. Most surprisingly, this globin RNA accumulates in t...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.2001.5332
更新日期:2001-11-01 00:00:00
abstract::Members of the Bcl-2 family of proteins are key regulators of apoptosis. Some of these proteins undergo posttranslational modification, such as phosphorylation or proteolysis, that serves to alter their function. Caspases are known to cleave Bid, a proapoptotic family member, as well as Bcl-2 and Bcl-X(L), two prosurv...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.2000.4859
更新日期:2000-05-01 00:00:00
abstract::We have characterized glucocerebrosidase in various cell types of peripheral blood of control subjects and in cultured human blastoid cells. The intracellular level of glucocerebrosidase in cultured blastoid cells (10-30 nmol substrate hydrolyzed/h.mg protein) resembles closely values observed for leukocyte cell types...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(88)90472-7
更新日期:1988-08-01 00:00:00
abstract::Neural stem cells change their characteristics over time during development: they initially proliferate only and then give rise to neurons first and glial cells later. In the absence of the repressor-type basic helix-loop-helix (bHLH) genes Hes1, Hes3 and Hes5, neural stem cells do not proliferate sufficiently but pre...
journal_title:Experimental cell research
pub_type: 杂志文章,评审
doi:10.1016/j.yexcr.2005.03.015
更新日期:2005-06-10 00:00:00
abstract::Transepithelial resistance (TER) measurement has often been used to study the paracellular transport properties of epithelia grown on permeable filters, especially the barrier function of tight junctions. However, the TER value includes another source, the resistance caused by cell-substrate contact, that may give ris...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1999.4538
更新日期:1999-08-01 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::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::Transferrin (Tf), an iron-binding protein, was investigated in the cultured human fibroblast which is a major cell type in connective tissues. Tf is a major iron-transporting protein and has an important role in iron metabolism. Using two-dimensional gel electrophoresis, we demonstrated the eight subtypes of Tf produc...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1998.4080
更新日期:1998-07-10 00:00:00
abstract::The intranuclear localization of SV40 T-antigen (T-Ag) and the cellular protein p53 was studied in SV40 abortively infected baby mouse kidney cells using two complementary methods of ultrastructural immunocytochemistry in combination with preferential staining of nuclear RNP components and electron microscope autoradi...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(88)90026-2
更新日期:1988-07-01 00:00:00
abstract::Phosphatidylinositol 3-kinase inhibitors have been shown to affect endocytosis or subsequent intracellular sorting in various receptor systems. Agonist-activated beta(2)-adrenergic receptors undergo desensitization by mechanisms that include the phosphorylation, endocytosis and degradation of receptors. Following endo...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2007.04.034
更新日期:2007-07-15 00:00:00
abstract::A monoclonal antibody Pr-28 was prepared, which recognized an antigen present only in proliferating cells. Immunofluorescence analysis of Pr-28 antigen showed that the antigen was localized mainly in perinuclear cytoplasm. Although Pr-28 antibody was produced against a chicken cell antigen, it reacts not only with chi...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(87)90312-0
更新日期:1987-06-01 00:00:00
abstract::Mammalian stanniocalcin-2 (STC2) is a secreted glycoprotein hormone with a putative role in unfolded protein response and apoptosis. Here we reported that STC2 expression was sporadically abrogated in human cancer cells by transcriptional silencing associated with CpG island promoter hypermethylation. Direct sequencin...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2008.03.001
更新日期:2008-05-01 00:00:00
abstract::The base at the first anticodon ("wobble") position of certain eukaryotic tRNA species is either guanine or the hypermodified base queuine. These tRNA species are synthesized with guanine in the wobble position (tRNAG); this guanine can then be replaced with queuine by the action of the enzyme tRNA-guanine ribosyltran...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(91)90506-p
更新日期:1991-07-01 00:00:00
abstract::It has previously been shown by immunocytochemistry that the inactive X chromosome (Xi) in somatic cells of human and mouse females is marked by underacetylation of histone H4. It has been suggested that this may be important for transcriptional silencing of genes on Xi. We have now investigated X-inactivation in meio...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1996.3394
更新日期:1997-02-01 00:00:00
abstract::Human skin fibroblasts deficient in peroxisome biogenesis were transformed by transfecting SV40 ori- DNA with the use of an electroporator, and the biochemical, immunocytochemical, and cytogenetic properties of the transformants were analyzed. Cells (1 x 10(6)) from a patient with Zellweger syndrome and one with neona...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(92)90278-g
更新日期:1992-08-01 00:00:00
abstract::This study reports on the specific binding of [3H]heparin to human adrenocortical carcinoma cell line SW-13. Heparin binding to SW-13 cells is specific, saturable, and time- and temperature-dependent with maximum binding occurring between 90 and 120 min at 22 degrees C. Scatchard analysis revealed two classes of bindi...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(90)90099-v
更新日期:1990-04-01 00:00:00
abstract::Compact mouse morulae were decompacted in calcium-free medium and allowed to recompact in standard embryo culture medium. When the recompaction medium contained trifluoperazine (TFP)(0.05 mM), an inhibitor of the calcium-dependent protein calmodulin, the embryos failed to recompact. This effect could not be overcome b...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(82)90406-2
更新日期:1982-11-01 00:00:00
abstract::Release of mitochondrial cytochrome c has been recently linked to the activation of the "executioner" phase of the cellular programs for death by apoptosis. This release is known to be negatively regulated by Bcl-2 and Bcl-XL proteins. We show here that treatment of human leukemia cells HL60 with 1,25-dihydroxyvitamin...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1997.3667
更新日期:1997-08-25 00:00:00
abstract::Stromal-vascular cells from the epididymal fat pad of 4-week-old rats, when cultured in a medium containing insulin or insulin-like growth factor, IGF-I, triiodothyronine and transferrin, were able to undergo adipose conversion. Over ninety percent of the cells accumulated lipid droplets and this proportion was reduce...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(87)90412-5
更新日期:1987-01-01 00:00:00
abstract::Rat thyroid differentiated cells (PC Cl 3) are an excellent model system with which to study the interaction between differentiation and cell transformation. We previously demonstrated that PC Cl 3 cells expressing the adenovirus E1A gene no longer depend on thyrotropin for growth and do not express thyroid differenti...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.2000.5023
更新日期:2000-11-01 00:00:00
abstract::Breast cancer is a common malignancy and a major cause of death in women worldwide. The immunomodulatory role of B cells is being increasingly recognized in autoimmune diseases and cancers. In recent years, immunotherapeutic strategies that upregulate the patient's own antitumor T cell responses have shown promise in ...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2017.10.013
更新日期:2017-12-01 00:00:00
abstract::K252a, a protein kinase inhibitor, acts as a neurotrophic factor in several neuronal cells. In this study we show that K252a enhanced the differentiation of C2C12 myoblasts as well as tyrosine phosphorylation of several focal adhesion-associated proteins including p130(Cas), focal adhesion kinase, and paxillin. The ty...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1999.4648
更新日期:1999-11-01 00:00:00
abstract::Many cell types secrete plasma membrane-bound microvesicles, suggested to play an important role in tissue morphogenesis, wound healing, and cancer spreading. However, the mechanisms of their formation have remained largely unknown. It was found that the tips of long microvilli induced in cells by overexpression of hy...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2013.05.021
更新日期:2013-08-01 00:00:00
abstract::Integrins play a major role in cell adhesion and migration. Previous work reported that a cleaved form of integrin alpha6 (alpha6p) was detected in invasive human prostate cancer tissue, absent in normal prostate tissue and was produced by urokinase-type Plasminogen Activator (uPA) in a plasmin-independent manner. Usi...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2007.01.006
更新日期:2007-04-01 00:00:00
abstract::Breast cancer (BC) is one of the most common cancers among women in both developed and developing countries with a rising incidence. Using the MMTV-PyMT transgenic mouse model and xenografted breast cancer model, we found that R5, a neutralizing antibody to Robo1, significantly inhibited BC growth and metastasis. Angi...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2019.111756
更新日期:2020-02-01 00:00:00
abstract::T cell polarization and redistribution of cellular components are critical to processes such as activation, migration, and potentially HIV infection. Here, we investigate the effects of CD4 engagement on the redistribution and localization of chemokine receptors, CXCR4 and CCR5, adhesion molecules, and lipid raft comp...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2004.11.022
更新日期:2005-04-01 00:00:00
abstract::Transforming growth factor-beta (TGF-beta) induces apoptosis in fetal rat hepatocytes. However, a subpopulation of these cells survives concomitant with changes in morphology and phenotype, reminiscent of an epithelial mesenchymal transition (EMT) [Exp. Cell Res. 252 (1999) 281-291]. In this work, we have isolated the...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2003.08.015
更新日期:2004-01-01 00:00:00
abstract:OBJECTIVES:This study aimed to investigate the expression changes of LOX (lysyl oxidase) family genes, VEGFA, and VEGFB under hypoxic conditions in a co-culture system of ASCs (adipose-derived stromal cells) and ECs (endothelial cells). MATERIALS AND METHODS:ASCs and ECs were co-cultured under hypoxic and normal oxyge...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2017.02.011
更新日期:2017-03-01 00:00:00
abstract::The extracellular matrix (ECM) contains important cues for tissue homeostasis and morphogenesis. The matricellular protein tenascin-C (TN-C) is overexpressed in remodeling tissues and cancer. In the present work, we studied the effect of different ECM-which exhibited a significant diversity in their TN-C content-in en...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2011.06.006
更新日期:2011-09-10 00:00:00