Abstract:
:Liver endothelium has been reported to possess membrane receptors for the iron-binding protein transferrin (Tf). Similarly, the core protein of proteoglycans (PG) associated with cell membrane in many cell systems can bind Tf. To find out if membrane-associated proteoglycans can explain Tf-binding ability of liver endothelium, we investigated the synthesis and distribution of proteoglycans by isolated, cultured liver capillary endothelium. Cells were isolated and cultured for 48 h in sulfate-free medium and pulse-labeled with 35SO4. The relative distribution of 35SO4-labeled macromolecules, determined in the extracellular (EC), membrane-associated (MA), and intracellular (IC) pools, was respectively 74, 15, and 10%. Membrane-associated proteoglycan (MA-PG) was further purified by ion exchange and gel chromatography. Glycosaminoglycan (GAG) chain characterization indicated about 78% chondroitin sulfate, 7% dermatan sulfate, and about 14% heparan sulfate (HS). Similar GAG chain characterization was made for PG in the EC and IC pools. Transferrin-binding ability of MA-PG was studied by affinity column chromatography, using CNBr-activated sepharose bound to transferrin. About 15% of the labeled MA-PG was specifically bound to Tf-affinity column and could be eluted by excess soluble Tf. This proportion was similar to the proportion of HS in the total membrane-associated pool. Moreover, the eluted labeled material was susceptible to pretreatment with heparitinase, confirming its HS nature. We conclude that the transport capillary endothelium of the liver can synthesize HS proteoglycans which are membrane-associated and this MA-HS pool can bind transferrin. The finding may provide a molecular basis for transferrin binding to liver endothelium and may explain the subsequent transendothelial transport of iron-transferrin complexes into the liver.
journal_name
Exp Cell Resjournal_title
Experimental cell researchauthors
Omoto E,Minguell JJ,Tavassoli Mdoi
10.1016/0014-4827(90)90120-ysubject
Has Abstractpub_date
1990-03-01 00:00:00pages
85-9issue
1eissn
0014-4827issn
1090-2422pii
0014-4827(90)90120-Yjournal_volume
187pub_type
杂志文章abstract::Phosphorylation of the nucleosome core histone H3 (H3) on Ser-10 is thought to be a prerequisite for chromatin condensation at mitosis. Although during interphase, cell differentiation, or mitogenic activation of quiescent cells, changes in chromatin structure that involve local chromatin condensation/decondensation a...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1998.4283
更新日期:1999-01-10 00:00:00
abstract::The KIAA0101/p15(PAF)/OEATC-1 protein was initially isolated in a yeast two-hybrid screen for proliferating cell nuclear antigen (PCNA) binding partners, and was shown to bind PCNA competitively with the cell cycle regulator p21(WAF). PCNA is involved in DNA replication and damage repair. Using polyclonal antisera rai...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2005.09.020
更新日期:2006-01-01 00:00:00
abstract::BMPs and Hox proteins play crucial roles in developmental processes. Beyond their mutual regulation of gene expression, little is known about the relations between their mechanisms of actions. Previously, we have shown that Hoxc8 acts as a downstream repressor in the BMP signaling pathway. Smad1 and Smad6 interact wit...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2005.12.002
更新日期:2006-04-01 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::Sperm cells from control donors of proven fertility and men from barren couples were studied by conventional procedures, i.e., light microscopy as well as flow cytometry. Light microscopy analysis of semen included the measurement of spermatozoa concentration, morphology, and motility. All the men from barren couples ...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1998.4064
更新日期:1998-06-15 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::The fruit-fly Drosophila melanogaster harbours different types of ciliary structures: ciliary projections associated with neurons of type I and cilium-like regions (CLRs) found during male gametogenesis. The latter deserve particular attention since they are morphologically similar to vertebrate primary cilia and tran...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2018.08.020
更新日期:2018-10-01 00:00:00
abstract::Neuroblastoma is a childhood tumor with a poor survival in advanced stage disease despite intensive chemotherapeutic regimes. The new histone deacetylase (HDAC) inhibitor BL1521 has shown promising results in neuroblastoma. Inhibition of HDAC resulted in a decrease in proliferation and metabolic activity, induction of...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2005.06.024
更新日期:2005-10-01 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::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::Ubiquitin-specific peptidase 18 (USP18) is closely related with hepatitis B virus (HBV), which has been involved in tumourigenesis. However, there has been little research into the role of USP18 on the progression of hepatocellular carcinoma (HCC), especially in HBV-related HCC. In present study, we found that USP18 e...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2017.07.006
更新日期:2017-09-15 00:00:00
abstract::Vegetative amoebae of Dictyostelium discoideum (strain AX2) adhere to columns of hydrophobic beads (Bio-Beads SM-2) which have been coated with axenic growth medium. This binding is blocked by sodium azide and other inhibitors of aerobic respiration. Bound cells are not detached by lowering the temperature but they ca...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(84)90235-0
更新日期:1984-05-01 00:00:00
abstract::Alpha-smooth muscle actin (SMA), an actin isoform that contributes to cell-generated mechanical tension, is normally restricted to cells of vascular smooth muscle, but SMA can also be expressed in certain non-muscle cells, most notably myofibroblasts. These cells are present in healing wounds, scars, and fibrocontract...
journal_title:Experimental cell research
pub_type: 杂志文章,评审
doi:10.1016/j.yexcr.2005.11.004
更新日期:2006-02-01 00:00:00
abstract::The purpose of the present study was to investigate the influence of the actin cytoskeleton on gap junctional intercellular communication (GJIC) in cultured astrocytes. This report describes an decrease of GJIC following microinjection of anti-actin antibodies or cytochalasin D treatment. Dye transfer of microinjected...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.2002.5652
更新日期:2002-12-10 00:00:00
abstract::HIV-associated nephropathy (HIVAN) is characterized by heavy proteinuria, rapidly progressive renal failure, and distinct morphological features in the kidney. HIV-induced epithelial-mesenchymal transition (EMT) is critically important for the progression of kidney injury. In this study, we tested the role of hedgehog...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2017.01.019
更新日期:2017-03-15 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 examined the relationship of cellular oncogene c-myc and transferrin receptor (TfR) gene expression to cell proliferation and cell cycle progression during myeloid differentiation in the HL-60 myeloid leukemia cell line. In order to determine levels of mRNA for these genes in HL-60 cells induced to differentiate al...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(90)90202-l
更新日期:1990-01-01 00:00:00
abstract::Cultured arterial smooth muscle cells incorporate [35S]sulfate into the extracellular chondroitin sulfate/dermatan sulfate containing proteoglycans at a higher rate in the phase of logarithmic growth than do non-dividing cells. The cell growth-dependent decrease in 35S incorporation with increasing cell density is acc...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(86)90188-6
更新日期:1986-12-01 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 phenotype, reminiscent of an epithelial-mesenchymal transition (EMT). We have previously suggested that EMT might confer cell resistance to apoptosis (Val...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2006.05.017
更新日期:2006-09-10 00:00:00
abstract::A large number of intracellular proteins are degraded by the ubiquitin-proteasome system, one of the major protein degradation pathways. It produces peptides of several different sizes through protein degradation, and these peptides are rapidly degraded into free amino acids by various intracellular aminopeptidases. P...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2020.112337
更新日期:2020-12-01 00:00:00
abstract::Identification of new drugs and predicting drug response are major challenges in oncology, especially for brain tumors, because total surgical resection is difficult and radiation therapy or chemotherapy is often ineffective. With the aim of developing a culture system close to in vivo conditions for testing new drugs...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2013.12.010
更新日期:2014-02-15 00:00:00
abstract::Actions of transforming growth factor-β are largely context dependent. For instance, TGF-β is growth inhibitory to epithelial cells and many tumor cell-lines while it stimulates the growth of mesenchymal cells. TGF-β also activates fibroblast cells to a myofibroblastic phenotype. In order to understand how the respons...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2015.03.001
更新日期:2015-06-10 00:00:00
abstract::In a previous study, we found that a specific inhibitor of cellular arginine-specific mono(ADP-ribosyl) transferase, meta-iodobenzylguanidine (MIBG), reversibly inhibited both proliferation and differentiation of cultured embryonic chick primary muscle myoblasts. In addition, we observed that arginine-specific ADP-rib...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1006/excr.1996.0213
更新日期:1996-07-10 00:00:00
abstract::As chemical reactions related to the regulation of cell proliferation are governed by availability, amount, and concentration of relevant molecules, it has been suggested that cell size is an important factor in the control of cell cycle. We have measured the size of proliferating cells of Allium cepa roots in which g...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(89)90056-6
更新日期:1989-11-01 00:00:00
abstract::Colorectal cancer (CRC) is characterized by a distinct metastatic pattern resembling chemokine-induced leukocyte trafficking. This prompted us to investigate expression, signal transduction and specific functions of the chemokine receptor CXCR4 in CRC cells and metastases. Using RT-PCR analysis and Western blotting, w...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2005.07.006
更新日期:2005-10-15 00:00:00
abstract::The small GTPases Rho, Rac, and Cdc42 regulate the actin cytoskeleton in all eukaryotic cells. In this study we have evaluated the effect of cholesterol oxides (7-ketocholesterol and 25-hydroxycholesterol) on cell migration, cell adhesion, and cytoskeletal organisation of lens epithelial cells (LEC). Effects of choles...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2003.08.002
更新日期:2003-12-10 00:00:00
abstract::New methods have been developed for the purification and characterization of the cell wall degrading enzyme, lysin, which is released into the medium during the mating reaction of the biflagellated alga Chlamydomonas reinhardtii. A quantitative spectrophotometric assay that detects the number of cells losing walls was...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(88)90357-6
更新日期:1988-11-01 00:00:00
abstract::Elevated plasma free fatty acids level has been implicated in the development of insulin resistance, inflammation, and endothelial dysfunction in diabetic and nondiabetic individuals. However, the underlying mechanisms still remain to be defined. Herein, we investigated the effect of palmitic acid (PA), the most abund...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2019.111552
更新日期:2019-10-15 00:00:00
abstract::In primary cultures of ovine thyroid cells, TSH induced the expression of several differentiated functions including the formation of follicles, and synthesis and storage of iodinated thyroglobulin in the follicular lumen. In the present report, these follicles were shown by transmission (TEM) and scanning electron mi...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/0014-4827(86)90031-5
更新日期:1986-06-01 00:00:00
abstract::It has been generally accepted that alternatively activated macrophages (M2), which can be induced by type 2 cytokines such as IL-4, is responsible for tissue repair. However, the function of JNK in IL-4-induced M2 macrophage polarization remains unclear. Here, we demonstrated that M0 macrophages can be polarized into...
journal_title:Experimental cell research
pub_type: 杂志文章
doi:10.1016/j.yexcr.2017.05.010
更新日期:2017-08-15 00:00:00