Abstract:
:Kaposi's sarcoma (KS) is the most frequent malignant lesion in patients with AIDS and is characterized by spindle cell proliferation, inflammatory cell infiltration, angiogenesis, edema, and invasiveness. KS origin is still debated. The complex aspect of this disease is probably supported by multiple concomitant pathogenetic factors, among which growth factors and their cognate tyrosine kinase receptors are deeply involved. Here we have investigated the expression status and functional integrity of KDR and Met receptors, as well as of their ligands, in an immortalized KS cell line (KS-IMM). The MET and KDR genes encode the tyrosine kinase receptors for Hepatocyte Growth Factor (HGF) and Vascular Endothelial Growth Factor (VEGF) respectively. Both factors are pleiotropic cytokines controlling growth, survival, motility, invasive migration and differentiation of endothelial cells. We have found that KS-IMM cells, which retain most of the features of the parental tumor and can induce KS-like sarcomas when injected subcutaneously in nude mice, express the Met receptor, but not its ligand. The receptor, which is basally inactive, is functional, being tyrosine phosphorylated in response to ligand stimulation and mediating the expected HGF-dependent biological responses of motility, invasion and proliferation. Moreover, we report that KS-IMM cells coexpress VEGF and KDR and that KDR is constitutively tyrosine phosphorylated, possibly as a consequence of the establishment of an autocrine loop. The receptor, however, maintains responsiveness to exogenously added ligand, by increasing the level of tyrosine phosphorylation and by responding in biological assays of motility, invasion and proliferation. Finally, we have found that the two growth factors synergize in a motility assay. These data show that HGF and VEGF are growth factors active on KS-IMM cells.
journal_name
J Cell Physioljournal_title
Journal of cellular physiologyauthors
Montaldo F,Maffé A,Morini M,Noonan D,Giordano S,Albini A,Prat Mdoi
10.1002/1097-4652(200008)184:2<246::AID-JCP13>3.0.keywords:
subject
Has Abstractpub_date
2000-08-01 00:00:00pages
246-54issue
2eissn
0021-9541issn
1097-4652pii
10.1002/1097-4652(200008)184:2<246::AID-JCP13>3.0.journal_volume
184pub_type
杂志文章abstract::Aberrant activation of the HGF/c-Met signalling pathway is reported to be associated with cell proliferation, progression, and metastasis features of several tumor types, including cervical cancer, suggesting that it may be of potential value as a novel therapeutic target. Furthermore, HPV-positive patients had a high...
journal_title:Journal of cellular physiology
pub_type: 杂志文章,评审
doi:10.1002/jcp.26232
更新日期:2018-06-01 00:00:00
abstract::The phytohemagglutinin (PHA)-stimulated human lymphocytes demonstrated trace or no activity (dihydro) folate acid reductase using three methods including a radioassay, but demonstrated ample activity of thymidylate synthetase. This was true regardless of the day of harvest, (first through seventh) of the stimulated ly...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1040950107
更新日期:1978-04-01 00:00:00
abstract::We have described recently that expression of CD44 exon v10 (CD44v10) is down-regulated upon metastasis of squamous cell carcinoma, whereas it is up-regulated in skin metastases of malignant melanoma. The striking regulation of CD44v10 prompted us to generate a murine CD44v10-specific monoclonal antibody to define exp...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4652(199706)171:3<305::AID-JCP9
更新日期:1997-06-01 00:00:00
abstract::A protein carboxyl methyltransferase (PCMT), which specifically modifies atypical protein L-isoaspartyl and D-aspartyl residues, is widely distributed in eucaryotic cells, but the factors that regulate its activity in vivo have not been identified. It has been proposed that the PCMT initiates the repair of structurall...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041530209
更新日期:1992-11-01 00:00:00
abstract::A temperature-sensitive mutant with a defect in glycoprotein synthesis and a cell cycle (G1)-specific arrest at the nonpermissive temperature (Tenner et al., J. Cell. Physiol., 90:145-160, 1977; Tenner and Scheffler, J. Cell. Physiol., 98:251-266, 1979) was investigated further after a human epidermal growth factor (E...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041330306
更新日期:1987-12-01 00:00:00
abstract::Histone deacetylases (HDACs) play a crucial role in the regulation of gene expression through remodeling of chromatin structures. However, the molecular mechanisms involved in this event remain unknown. In this study, we sought to examine whether HDAC inhibition-mediated protective effects involved HDAC4 sumoylation, ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.24871
更新日期:2015-06-01 00:00:00
abstract::It is presently unclear what role elevations in intracellular calcium concentration ([Ca2+]i) play in the control of monokine secretion, or whether such alterations underlie the ability of physiologic stimuli to induce production of these important signalling molecules. To address these issues, we have performed exper...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4652(199811)177:2<232::AID-JCP5
更新日期:1998-11-01 00:00:00
abstract::Dishevelled-associated activator of morphogenesis 1 (DAAM1) is a formin-family protein involved in nucleation of unbranched actin filaments and in cytoskeletal organization through Wnt-Dishevelled PCP pathway, which participates in essential biological processes, such as cell polarity, movement, and adhesion during mo...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.25330
更新日期:2016-10-01 00:00:00
abstract::The endocannabinoid system (ECS) is activated at the onset of obesity and diverse metabolic diseases. Endocannabinoids mediate their physiological and behavioral effects by activating specific cannabinoid receptors, mainly cannabinoid receptor 1 (CB(1)R). Diabetic nephropathy (DN) is induced by hyperlipidemia, and ren...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.22255
更新日期:2010-11-01 00:00:00
abstract::Regulation of lipid synthesis from acetate in human diploid fibroblast cultures has been studied at various passage levels and at different stages of cell growth. When cultures were transferred to lipid free medium, a stimulation of [14C]acetate incorporation into lipid occurred within three to six hours after removal...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1040890215
更新日期:1976-10-01 00:00:00
abstract::Acidic fibroblast growth factor (aFGF) mRNA was detected in a rat mammary fibroblastic cell line, but not in rat mammary epithelial cell lines or myoepithelial-like cell lines. Basic FGF (bFGF) mRNA was detected in both the fibroblasts and the myoepithelial-like cells, but was absent from the epithelial cells. A serie...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041440220
更新日期:1990-08-01 00:00:00
abstract::This study is performed to examine the impacts of microRNA-218 (miR-218) on cardiac microvascular endothelial cells (CMECs) injury induced by coronary artery disease (CAD). Reverse-transcription quantitative polymerase chain reaction (RT-qPCR) was applied for detecting miR-218 expression in serum of patients with CAD ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.29214
更新日期:2020-03-01 00:00:00
abstract::CCN1 is highly expressed in cancer cells and has been identified in the secretome of bone marrow-derived mesenchymal stem cells (BM-MSC). Although secreted CCN1 is known to promote angiogenesis, its underlying mechanism remains unclear. Here, we examined whether our recently-established tonsil-derived MSC (T-MSC) secr...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.24690
更新日期:2015-01-01 00:00:00
abstract::Sarcolectin is an endolectin present in a great variety of conjunctival tissues (muscles, cartilage, sarcomas), but also in brain or placental extracts of vertebrates, including primates. When purified to electrophoretical homogeneity as a 65-kd protein, it agglutinates cells and has an affinity for simple sugars. In ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041450123
更新日期:1990-10-01 00:00:00
abstract::Activation of the epidermal growth factor receptor (EGFR) has been shown to occur by ligand-dependent and ligand-independent mechanisms. Different molecular mechanisms have been found to be responsible for ligand-independent receptor transactivation. Here, we show that hyperosmolar concentrations of sorbitol activate ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.10134
更新日期:2002-08-01 00:00:00
abstract::The components of 45calcium (Ca) uptake were studied in saponin skinned rat caudal artery. The steady-state Ca content increased when the free Ca concentration was varied from 10(-8) to 10(-4) M but was reduced by azide when the free Ca concentration exceeded 3.1 microM. The azide sensitivity and low affinity for Ca w...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041490305
更新日期:1991-12-01 00:00:00
abstract::Cells of rat parotid glands were maximally stimulated to initiate DNA synthesis by injecting into the animal a single dose of 25 to 150 mg of isoproterenol/kg of body weight. During the 18- to 21-hr prereplicative period following injection of the highest dose of the drug, there were two predominant and transient redi...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041180307
更新日期:1984-03-01 00:00:00
abstract::Non-small cell lung cancer (NSCLC) remains the leading cause of cancer death worldwide. As a platinum-based chemotherapeutic drug, cisplatin has been used in the NSCLC treatment for over 30 years, and its effects are impaired by drug resistance. This study aimed to investigate the potential role of lncRNA-AC078883.3 i...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.28832
更新日期:2019-12-01 00:00:00
abstract::Chronic hyperglycemia and activation of receptor for advanced glycation end products (RAGE) are known risk factors for microvascular disease development in diabetic retinopathy. Thioredoxin-interacting protein (TXNIP), an endogenous inhibitor of antioxidant thioredoxin (TRX), plays a causative role in diabetes and its...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.21852
更新日期:2009-10-01 00:00:00
abstract::Hypoxia promotes keratinocyte migration on wound bed connective tissues and is a profound biological signal that transforms a basal keratinocyte, destined to differentiate, into a motile cell that is essential for re-epithelialization. In this study, we examined the effect of hypoxia on keratinocyte-derived collagenas...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.21160
更新日期:2008-01-01 00:00:00
abstract::An association has been proved between high salt consumption and cardiovascular mortality. In vertebrates, the heart is the first functional organ to be formed. However, it is not clear whether high-salt exposure has an adverse impact on cardiogenesis. Here we report high-salt exposure inhibited basement membrane brea...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.26528
更新日期:2018-09-01 00:00:00
abstract::We previously showed that fluid flow, which chondrocytes experience in vivo and which results in a variety of morphological and metabolic changes in cultured articular chondrocytes, can also stimulate a rise in intracellular calcium concentration ([Ca2+]i). However, the mechanism by which Ca2+ is mobilized in response...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4652(199909)180:3<402::AID-JCP1
更新日期:1999-09-01 00:00:00
abstract::The fetal and neonatal development of male germ cells (gonocytes) is a poorly understood but crucial process for establishing fertility. In rodents, gonocytes go through two phases of proliferation accompanied by apoptosis and separated by a quiescent period during the end of fetal development. P63 is a member of the ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.20829
更新日期:2007-01-01 00:00:00
abstract::Respiratory tract epithelia are one type of tissue targeted by vitamin A. In this study the effects of vitamin A and its analogs (retinoids) on human bronchial epithelial (HBE) cells have been investigated in a serum-free hormone-supplemented medium. This serum-free medium, which was developed for the long-term cultiv...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041270110
更新日期:1986-04-01 00:00:00
abstract::rac-1-O-Myristoyl-2-O-acetylglycerol, rac-1-O-palmitoyl-2-O-acetylglycerol, and rac-1-O-oleoyl-2-O-acetylglycerol acted like phorbol myristate acetate and mezerein in stimulating human neutrophil aggregation. Responses to these agents were equally influenced by cytochalasin B, extracellular calcium and magnesium, arac...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041250204
更新日期:1985-11-01 00:00:00
abstract::Transformation of Sprague-Dawley rat embryo (RE) cells and a cloned Fischer rat embryo cell line (CREF) with wild-type (Ad5) or a temperature-sensitive DNA-minus mutant (H5ts125) of type 5 adenovirus results in a reduction in binding of epidermal growth factor (EGF) to cell surface receptors. A reduction in EGF bindin...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041140315
更新日期:1983-03-01 00:00:00
abstract::Neuropathic pain caused by somatosensory nervous system dysfunction is a serious public health problem. Some long noncoding RNAs (lncRNAs) can participate in physiological processes involved in neuropathic pain. However, the effects of lncRNA DGCR5 in neuropathic pain have not been explored. Therefore, in our current ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.27487
更新日期:2019-05-01 00:00:00
abstract::Serum-free mouse embryo cells, cultured in basal nutrient medium supplemented with insulin, transferrin, epidermal growth factor, fibronectin, and high-density lipoprotein, do not exhibit growth crisis, lack detectable chromosomal aberrations, are nontumorigenic in vivo, are dependent on epidermal growth factor for su...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041440110
更新日期:1990-07-01 00:00:00
abstract::Generation of fully functional hematopoietic multipotent progenitor (MPP) cells from human pluripotent stem cells (hPSCs) has a great therapeutic potential to provide an unlimited cell source for treatment of hematological disorders. We previously demonstrated that CD34(+) CD31(+) CD144(+) population derived from hPSC...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.25199
更新日期:2016-05-01 00:00:00
abstract::Liver fibrosis is a reversible wound-healing response that occurs after liver injury. NADPH oxidases (NOXs) and reactive oxygen species (ROS) which are expressed in hepatocytes (HCs), hepatic stellate cells (HSCs), and Kupffer cells (KCs) play an important role in the development of hepatic fibrosis. In in vitro studi...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.26541
更新日期:2018-10-01 00:00:00