Abstract:
:Scatchard analysis of binding of 125I-basic fibroblast growth factor (FGF) to baby hamster kidney (BHK) cells revealed the presence of two binding sites: a high affinity site with KD of 20 pM and 80,000 sites per cell and a low affinity site with KD of about 2 nM and 600,000 sites per cell. The binding to the two sites could be separated by first washing the cells with 2 M NaCl at pH 7.5 which released the low affinity binding and then extracting the cells with 0.5% Triton X-100 to recover the 125I-basic FGF bound to high affinity sites. The binding to the high affinity site was acid sensitive, suggesting that it represented binding to the receptor. Binding to the low affinity site could be competed strongly by heparin and less strongly by heparan sulfate but not by chondroitin sulfate, dermatan sulfate, or keratan sulfate. Treatment of BHK cells with heparinase abolished 62% of the low affinity binding, suggesting that the low affinity binding represented binding to cell-associated, heparin-like molecules. A variety of other cell types, including bovine capillary endothelial (BCE) cells, also demonstrated both low and high affinity binding sites. To test whether the low affinity binding might play a role in the basic FGF stimulation of plasminogen activator (PA) production by BCE cells, heparin was added to BCE cultures at concentrations which totally blocked binding of 125I-basic FGF to the low affinity sites. Addition of the heparin did not diminish the increased PA production induced by basic FGF. This suggests that the low affinity binding has no direct role in the stimulation of PA production in BCE cells.
journal_name
J Cell Physioljournal_title
Journal of cellular physiologyauthors
Moscatelli Ddoi
10.1002/jcp.1041310118subject
Has Abstractpub_date
1987-04-01 00:00:00pages
123-30issue
1eissn
0021-9541issn
1097-4652journal_volume
131pub_type
杂志文章abstract::Transforming growth factor beta (TGF beta) treatment of rat osteoblast-rich calvarial cells or of the clonal osteogenic sarcoma cells, UMR 106-01, resulted in dose-dependent inhibition of plasminogen activator (PA) activity, and increased production of 3.2 kb mRNA and protein for PA inhibitor -1 (PAI-1). Although tiss...
journal_title:Journal of cellular physiology
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更新日期:1991-10-01 00:00:00
abstract::At the end of December 2019, a novel acute respiratory syndrome coronavirus 2 (SARS-CoV2) appeared as the third unheard of outbreak of human coronavirus infection in the 21st century. First, in Wuhan, China, the novel SARS-CoV2 was named by the World Health Organization (WHO), as 2019-nCOV (COVID-19), and spread extre...
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abstract::Neuroblastoma (NBL) exists in a complex tumor-immune microenvironment. Immune cell infiltration and tumor-immune molecules play a critical role in tumor development and significantly impact the prognosis of patients. However, the molecular characteristics describing the NBL-immune interaction and their prognostic pote...
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abstract::Retinoic acid (RA) is known to induce differentiation in many cell systems. This induction is mediated by nuclear RA receptors (RARs), which act as transactivating factors belonging to the superfamily of steroid/thyroid nuclear receptors. In this study, effects of RA were studied in a mouse myogenic C2 cell line and i...
journal_title:Journal of cellular physiology
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更新日期:1993-03-01 00:00:00
abstract::The roles of Sonic hedgehog (Shh) and Bone morphogenetic protein-2 (Bmp-2) in osteoblast differentiation were investigated using in vitro cell systems. Recombinant amino-terminal portion of SHH (rSHH-N) dose dependently stimulated ALP activity in C3H10T1/2 and MC3T3-E1 cells. rSHH-N induced expression of Osteocalcin m...
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abstract::Increased neovascularization is commonly observed in hemorrhagic plaques and associated with rupture of atherosclerotic lesions. This study aims to investigate whether hemin accumulated at the site of hematoma promotes neovascularization through affecting the growth and function of endothelial progenitor cells (EPCs) ...
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更新日期:2009-06-01 00:00:00
abstract::Autophagy is a crucial cellular homeostatic process and an important part of the host defense system. Dysfunction in autophagy enhances tissue susceptibility to infection and multiple diseases. However, the role of nucleotide oligomerization domain 1 (NOD1) in autophagy in bovine hepatocytes is not well known. Therefo...
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abstract::The purpose of this study was to evaluate the anti-head and neck squamous cell carcinoma (anti-HNSCC) cell activity by C6 ceramide and multikinase inhibitor PKC412. Experiments were performed on HNSCC cell lines (SQ20B and SCC-9) and primary human oral carcinoma cells. Results showed that PKC412 inhibited HNSCC cell p...
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abstract::We determined the mitogenic and comitogenic properties of tumor promoters in the indole alkaloid series; agents that differ structurally from 12-0-tetradecanoylphorbol-13-acetate (TPA), which is known to be a lymphocyte mitogen. Teleocidin and dihydroteleocidin B were mitogenic for human lymphocytes, and lyngbyatoxin ...
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更新日期:1984-07-01 00:00:00
abstract::Electrophysiologic properties of cultured human keratinocytes were studied using the patch voltage-clamp technique. Undifferentiated, proliferative keratinocytes grown in low Ca2+ medium had an average resting membrane potential of -24 mV. Voltage-clamp experiments showed that these cells had two membrane ionic curren...
journal_title:Journal of cellular physiology
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更新日期:1990-04-01 00:00:00
abstract::Exosomes contain regulatory signals such as lipids, proteins, and nucleic acids which can be transferred to adjacent or remote cells to mediate cell-to-cell communication. Exercise is a positive lifestyle for metabolic health and a nonpharmacological treatment of insulin resistance and metabolic diseases. Moreover, ex...
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更新日期:2019-02-12 00:00:00
abstract::alpha-Thrombin, bradykinin, and histamine are endogenous mediators that increase endothelial permeability. We examined the mechanism by which these three vasoactive mediators could alter permeability to albumin of human umbilical vein endothelial cells (HUVEC). HUVEC were grown to confluence on Transwell membranes and...
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更新日期:1996-06-01 00:00:00
abstract::In the present investigation, a hCG sensitive glycosyl-phosphatidylinositol (GPI) was isolated from cultured rat granulosa cells obtained from the ovaries of diethylstilbestrol (DES) implanted immature rats. The inositol-phosphoglycan (IPG) moiety of the GPI-lipid contains galactose, glucosamine, and myoinositol as de...
journal_title:Journal of cellular physiology
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更新日期:1993-05-01 00:00:00
abstract::Biology of glomerular visceral epithelial cells ("podocytes") and their role in inflammatory process remain obscure, partly because of the lack of well-differentiated podocyte cultures. We have established a human cell line by transfecting with a replication-defective SV40 plasmid (pSVHB1), a primary culture of podocy...
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更新日期:1992-09-01 00:00:00
abstract::Differentiation commitment events are essential for the initiation of hemopoiesis and, in one form or another, occur continuously during adult hemopoiesis. The most studied type of differentiation commitment decision a hemopoietic cell can make involves the alternative choice of self-renewal versus the formation of pr...
journal_title:Journal of cellular physiology
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abstract::We have analyzed the expression of Na,K-ATPase alpha subunit isoforms in the transporting ciliary processes of the human eye and in cultured cells derived from non-pigmented (NPE) and pigmented (PE) ciliary epithelium. Northern hybridization analysis shows that the mRNAs encoding all the three distinct forms of Na,K-A...
journal_title:Journal of cellular physiology
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更新日期:1989-11-01 00:00:00
abstract::There are two known phosphorylation-mediated inactivation mechanisms for TRPC3 channels. Protein kinase G (PKG) inactivates TRPC3 by direct phosphorylation on Thr-11 and Ser-263 of the TRPC3 proteins, and protein kinase C (PKC) inactivates TRPC3 by phosphorylation on Ser-712. In the present study, we explored the rela...
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abstract::The growth response of cultured rat intestinal epithelial (RIE-1) cells to epidermal growth factor (EGF) depends on the cell population density. EGF stimulated the proliferation of RIE-1 cells in dense cultures, but inhibited the proliferation of cells growing at low population densities. In contrast, insulin enhanced...
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abstract::The bone marrow landscape consists of specialized and stem/progenitor cells, which coordinate important tissue-related and systemic physiological features. Within the marrow cavity, stem/progenitor and differentiated hematopoietic and skeletal cells congregate into dynamic functional assemblies throughout specific ana...
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abstract::Neurofibromatosis type 1 (NF1) is characterized by the formation of neurofibromas, benign tumors of the peripheral nerve consisting essentially of Schwann cells, which can sometimes turn malignant to form neurofibrosarcomas. The mechanism of progression toward a malignant phenotype remains largely unknown. In this rep...
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abstract::Increasing evidence has demonstrated that abnormal expression of lncRNA is correlated with various malignant tumors, including hepatocellular carcinoma (HCC). Our current study was aimed to investigate the role of LINC00707 in HCC development. We observed that LINC00707 was upregulated in HCC cell lines compared with ...
journal_title:Journal of cellular physiology
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更新日期:2019-05-01 00:00:00
abstract::The metabolome is a data-rich source of information concerning all the low-molecular-weight metabolites in a biofluid, which can indicate early biological changes to the host due to perturbations in metabolic pathways. Major changes can be seen after minor stimuli, which make it a valuable target for analysis. Due to ...
journal_title:Journal of cellular physiology
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更新日期:2012-08-01 00:00:00
abstract::Cardiac progenitor cells (CPCs) have the potential to differentiate into several cell lineages with the ability to restore in cardiac tissue. Multipotency and self-renewal activity are the crucial characteristics of CPCs. Also, CPCs have promising therapeutic roles in cardiac diseases such as valvular disease, thrombo...
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更新日期:2019-11-01 00:00:00
abstract::High potassium concentrations altered the morphology and the ability to grow in soft agar in 6m2 cells, a clone of rat kidney cells infected with a temperature-sensitive mutant of Moloney sarcoma virus. Approximately 60% of cells exhibited normal morphology in the presence of 94.8 mM potassium in isotonic medium at th...
journal_title:Journal of cellular physiology
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更新日期:1985-11-01 00:00:00
abstract::Cardiac hypertrophy (CH), characterized by the enlargement of cardiomyocytes, fibrosis and apoptosis, is one of the leading causes of death worldwide. Despite the advances in cardiovascular research, there remains a need to further investigate the signaling pathways that mediate CH in order to identify novel therapeut...
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更新日期:2017-12-01 00:00:00
abstract::We have measured endogenous and induced rates of 70-kD, 89-kD, and 110-kD heat shock proteins in highly pure G1-, S-, or G2-M phase fractions of Chinese hamster fibroblasts (CHO) separated by fluorescence-activated cell sorting (FACS). Relative rates of synthesis of all three polypeptides as measured by two-dimensiona...
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更新日期:1986-02-01 00:00:00
abstract::During wound healing, myofibroblasts play a central role in matrix formation and wound contraction. At the end of healing, there is evidence that myofibroblasts disappear via apoptotic pathways. Hypertrophic scars are a fibroproliferative disorder that leads to considerable morbidity. It has been postulated that a def...
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更新日期:2004-03-01 00:00:00
abstract::The effect of retinoic acid on human fibroblasts was studied in a cell culture model of chronologic aging and photoaging. During early exponential phase, all trans-retinoic acid significantly stimulated growth rate of adult arm-derived dermal fibroblasts but not of newborn or adult foreskin-derived fibroblasts. Retino...
journal_title:Journal of cellular physiology
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更新日期:1989-04-01 00:00:00
abstract::Several papers report a hypoxia-induced upregulation of the endothelial nitric oxide synthase (eNOS) mRNA expression. Since there is no known hypoxia-sensitive element binding site in the eNOS promoter, we reasoned that the effect of hypoxia could be simulated by a metabolically elicited alteration of the redox state....
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更新日期:2001-07-01 00:00:00