Abstract:
:We have compared dye coupling in pairs of small (less than 10 microns in diameter) and large (greater than 20 microns in diameter) keratinocytes isolated from normal human epidermis, using Lucifer yellow microinjection. Under control conditions, dye coupling was found in only 1 out of the 25 small pairs tested, whereas it was evident in 75% of the large pairs (n = 52). After a 30-min incubation of the latter pairs in the presence of 10(-6) and 10(-4) M all-transretinoic acid (RA), the percentage of coupling was 53% (n = 15; NS) and 7% (n = 14; P less than 0.001), respectively. The almost complete uncoupling observed after 10(-4) M RA was not reversible even 30 min after return to control medium (n = 8). Dual whole-cell patch-clamp recordings from large keratinocyte pairs showed a macroscopic junctional conductance (gj) of 9 +/- 2 nS (n = 43), which was abolished by heptanol (3.5 mM) in a fully reversible way. Compared to heptanol, 10(-4) M RA abolished keratinocyte gj more slowly and irreversibly (n = 10). By contrast, 10(-6) M RA had no significant effect on gj (n = 8). Single-gap junctional channels were also identified between large keratinocytes. Events histograms of 152 transitions from three experiments revealed three main unitary conductances (gamma j) of 45 +/- 4, 78 +/- 4, and 106 +/- 7 pS. The dye coupling results indicate that junctional communication is markedly different in pairs of small and large cells, which showed the phenotype and keratin markers of basal and suprabasal keratinocytes, respectively. In the latter cell type, coupling is ensured by channels of three sizes and is blocked irreversibly by pharmacologic concentrations of RA.
journal_name
Exp Cell Resjournal_title
Experimental cell researchauthors
Salomon D,Chanson M,Vischer S,Masgrau E,Vozzi C,Saurat JH,Spray DC,Meda Pdoi
10.1016/0014-4827(92)90294-ikeywords:
subject
Has Abstractpub_date
1992-08-01 00:00:00pages
452-61issue
2eissn
0014-4827issn
1090-2422journal_volume
201pub_type
杂志文章abstract::An implantation-competent blastocyst, several hours prior to its attachment on the uterine wall, transmits signals to surrounding uterine cells and vice-versa to initiate a two-way interaction. The language of this precocious dialogue is versatile, taking advantage of secreted molecules for long-range interactions and...
journal_title:Experimental cell research
pub_type: 杂志文章,评审
doi:10.1016/j.yexcr.2008.07.025
更新日期:2009-02-15 00:00:00
abstract::The retention of mRNAs near the nuclei that synthesize them may be an important feature of the organization of multinucleated skeletal myotubes. Here, we assess the possible role of two factors in this localization. First, we examine the role of mRNA half-life, by studying the distribution of the mRNA for the transfer...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1997.3753
更新日期:1997-11-01 00:00:00
abstract::Alzheimer's disease (AD) is characterized by early degeneration of cholinergic neurons and decreased levels of nerve growth factor (NGF). Thus, increasing the NGF levels by for instance encapsulated cell bio-delivery (ECB) is a potential treatment strategy. The results from our previous first-in-human studies on ECB o...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2018.08.007
更新日期:2018-10-01 00:00:00
abstract::During skeletal muscle development three intermediate filament proteins are expressed: nestin, vimentin, and desmin. Vimentin and desmin belong to the class III intermediate filaments and are closely related to each other, whereas nestin is a more distantly related, class VI, intermediate filament. It was previously o...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1994.1281
更新日期:1994-10-01 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::Polyamines affect nucleosome oligomerization and DNA conformation in vitro, yet little information exists regarding the influence of naturally synthesized polyamines on mammalian chromatin. Capitalizing on the relative inefficiency of a moderate ionic strength extraction buffer to dissociate histones, we obtained evid...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/s0014-4827(03)00352-5
更新日期:2003-11-01 00:00:00
abstract::The effect of dexamethasone on the synthesis of acute phase proteins has been studied in primary cultures of rat hepatocytes. In the absence of dexamethasone no detectable amounts of alpha 2-macroglobulin were synthesized by hepatocytes cultured for 1 day. alpha 2-Macroglobulin synthesis was induced by dexamethasone c...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(84)90354-9
更新日期:1984-03-01 00:00:00
abstract::USF is a small family of basic helix-loop-helix leucine zipper (bHLH-zip) transcription factors with DNA binding specificities similar to that of the c-Myc oncoprotein. Evidence for a role of USF in growth control includes inhibition of c-Myc-dependent cellular transformation in vitro and loss of USF transcriptional a...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2004.08.013
更新日期:2005-01-01 00:00:00
abstract::Gap junctional intercellular communication (GJIC), desmosomes, and cell movement were evaluated in a rat ovarian epithelial cell model system which consisted of an immortalized clonal cell line (SIGC), a pSV3neotransfected clonal derivative (SV-SIGC), and a nude mouse SV-SIGC-tumor-derived cell line (T-SV-SIGC). Compl...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1993.1158
更新日期:1993-07-01 00:00:00
abstract::The development of Sjögren's syndrome (SS) is accompanied by B cell hyperproliferation and mutation. Our previous study identified aberrant expression of BST-2 (also known as Tetherin/CD317) in B cells from either the peripheral blood or infiltrated salivary glands. However, the roles of BST-2 in the regulation of B c...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2020.112399
更新日期:2021-01-01 00:00:00
abstract::Parietal yolk sac cells M1536 -B3 grown on cytodex 2 beads deposited an extracellular matrix on the surface of the beads. Cell-free matrix-coated beads were isolated by treatment of the cell monolayer with cytochalasin B (CB) at a concentration of 10 micrograms/ml of phosphate-buffered saline (PBS). The matrix when an...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(84)90652-9
更新日期:1984-06-01 00:00:00
abstract::The technique of fiber DNA measurement was used to study the possibility that the lengthening of the DNA "S" phase previously reported for mouse premeiotic spermatogonia was due to a reduced number of initiation sites. The mean replicon size of neonatal mouse preleptotene cells was similar to sizes reported for adult ...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(83)90130-1
更新日期:1983-07-01 00:00:00
abstract::Oncogenic EGFRvIII is a naturally occurring oncoprotein and is expressed in about 40-50% of human glioblastomas, particularly those that arise de novo. To understand the molecular mechanisms by which this oncoprotein alters transforming phenotypes, and since our previous work indicated that SHP-2 protein tyrosine phos...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2009.05.001
更新日期:2009-08-15 00:00:00
abstract::The role of glycans in the apical targeting of proteins in epithelial cells remains a debated question. We have expressed the mouse soluble dipeptidyl peptidase IV (DPP IV ectodomain) in kidney (MDCK) and in intestinal (Caco-2) epithelial cell lines, as a model to study the role of glycosylation in apical targeting. T...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.2000.4894
更新日期:2000-07-10 00:00:00
abstract::Rat peritoneal mast cells (RPMC) and rat basophilic leukemia (RBL) cells are representative of connective tissue-type (CTMC) and mucosal-type (MMC) mast cells, respectively. Using polyethylene glycol, we have fused RPMC with 6-thioguanine resistant, HAT (hypoxanthine, aminopterin, thymidine) sensitive RBL-CA10.7 or RB...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(91)90369-6
更新日期:1991-06-01 00:00:00
abstract::Colon cancer shows characteristics of metastasis, which is associated with angiogenesis. Increasing evidence highlights long non-coding RNAs (lncRNAs) as important participants in angiogenesis of cancers, including colon cancer. Hence, this study investigated the role of HNF1A-AS1 in angiogenesis of colon cancer. RT-q...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2020.112025
更新日期:2020-08-15 00:00:00
abstract::Since the migration of human fetal skin fibroblasts into a denuded area of a cell monolayer has been demonstrated to be serum-independent (fetal phenotype), whereas that of adult-donor skin fibroblasts is serum-dependent (adult phenotype), a study was carried out to determine at which life stage the fetal-adult phenot...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1995.1342
更新日期:1995-10-01 00:00:00
abstract::A prominent secretory glycoprotein was detected in the culture medium of porcine thyrocytes which was identified as clusterin by microsequencing. Treatment of thyrocytes with thyroid stimulating hormone revealed a tight regulation of both synthesis and secretion of clusterin, with a distinct fraction of clusterin bein...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1999.4555
更新日期:1999-08-25 00:00:00
abstract::The low density lipoprotein receptor-related protein (LRP) binds multiple, distinct ligands and participates in constitutive endocytosis and signal transduction. Using an in vitro reconstitution system and a new biochemical complementation assay, we have explored the limiting cytosolic requirements for endocytosis of ...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2005.12.022
更新日期:2006-05-01 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::Intestinal ischemia/reperfusion (I/R) injury is a grave clinical emergency and associated with high morbidity and mortality rates. Based on the complex underlying mechanisms, a multimodal pharmacological approach seems necessary to prevent intestinal I/R injury. The antibiotic drug doxycycline, which exhibits a wide r...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2017.03.017
更新日期:2017-04-15 00:00:00
abstract::LC3, a mammalian homologue of yeast Atg8, is assumed to play an important part in bulk sequestration and degradation of cytoplasm (macroautophagy), and is widely used as an indicator of this process. To critically examine its role, we followed the autophagic flux of LC3 in rat hepatocytes during conditions of maximal ...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2015.02.003
更新日期:2015-04-10 00:00:00
abstract::Cystatins constitute a superfamily of cysteine protease inhibitors. A member of the type II secreted cystatin family, cystatin F, has been identified through different gene array experiments to be specifically expressed in hematopoietic cells as well as to be associated with several malignant tumors, suggesting a role...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2004.03.048
更新日期:2004-07-15 00:00:00
abstract::The role of the F-actin cytoskeleton in cell volume regulation was studied in Ehrlich ascites tumor cells, using a quantitative rhodamine-phalloidin assay, confocal laser scanning microscopy, and electronic cell sizing. A hypotonic challenge (160 mOsm) was associated with a decrease in cellular F-actin content at 1 an...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1999.4615
更新日期:1999-10-10 00:00:00
abstract::An attempt was made to determine the role of metabolic acidification of pericellular medium in regulating cell proliferation. A method of measuring the pH of pericellular medium at a distance exceeding a Debye radius of 5-10 A from the cell surface (pHp) was developed. The values of pHp and pH measured in the medium a...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(85)90188-0
更新日期:1985-10-01 00:00:00
abstract::Methylated amino acids inhibit lysosomal function in cultured rat heart myocytes more effectively than the classically employed lysosomotropic weak bases. Moreover, L-leucine methyl ester (L-Leu-OMe) or L-methionine methyl ester (L-Meth-OMe) do not alter lysosomal pH or inactivate lysosomal cysteine proteinases, but d...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(84)90690-6
更新日期:1984-09-01 00:00:00
abstract::Melanoma formation in the teleost fish Xiphophorus is caused by the uncontrolled activity of the genetically defined tumor locus Tu. The critical component of this locus is the Xmrk oncogene encoding a subclass I receptor tyrosine kinase. Overexpression and constitutive activation of the Xmrk receptor triggers a set o...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1999.4470
更新日期:1999-06-15 00:00:00
abstract::1,25-dihydroxyvitamin D(3) (VD(3)) induces differentiation in a number of leukemia cell lines and under various conditions is able to either stimulate or inhibit nuclear factor kappa B (NF-kappaB) activity. Here we report a time-dependent biphasic regulation of NF-kappaB in VD(3)-treated HL-60 leukemia cells. After VD...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2007.02.022
更新日期:2007-05-01 00:00:00
abstract::Rhodamine 123 (R 123) is a positively charged dye at physiological pH that accumulates specifically in the mitochondria of living cells without cytotoxic effect. In the present study, the uptake of R 123 by EL-4 lymphoma cells in culture with anticancer agents was measured by flow cytometry. Changes in R 123 uptake du...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(92)90162-2
更新日期:1992-01-01 00:00:00
abstract::The germinal vesicle (GV) of Xenopus laevis is an enormous nucleus that contains 18 giant lampbrush chromosomes and thousands of inclusions. The inclusions are primarily of three types: approximately 1500 extrachromosomal nucleoli, 50-100 Cajal bodies, and several thousand B-snurposomes, which correspond to speckles o...
journal_title:Experimental cell research
pub_type: 杂志文章,评审
doi:10.1016/j.yexcr.2004.03.017
更新日期:2004-05-15 00:00:00