Abstract:
:While the effects of single growth factors on endothelial cells (ECs) have been extensively studied, the importance of induction of growth factors such as PDGF-BB (platelet derived growth factor) in ECs and its impact on tumor cell functions are only partly understood. Human umbilical vein endothelial cells (HUVECs) were cultured under serum-free conditions and stimulated by 20 ng/ml VEGF (vascular endothelial growth factor) or 20 ng/ml bFGF (basic fibroblastic growth factor). As determined by real-time PCR, both VEGF and bFGF induced a significant (up to 4-fold) increase in PDGF-B RNA expression which was time- and dose-dependent (p<0.05). Similarly, conditioned medium (CM) from lung cancer cells (A549) which is known to contain multiple growth factors including VEGF and bFGF also induced PDGF-B RNA expression. Using ELISA assays, VEGF and bFGF significantly increased PDGF-BB protein secretion in HUVECs (p<0.01). By addition of BIBF 1000, a novel inhibitor of the VEGF and bFGF receptor kinases, the effect of VEGF on PDGF-B RNA induction was significantly antagonized (p<0.01). Furthermore, we studied the biological significance of EC-derived PDGF-BB on lung cancer cells. Interestingly, HUVEC-derived CM significantly stimulated migration of A549 cells (p<0.001) with a trend to further increased migration with the use of VEGF-stimulated (PDGF-BB rich) CM (p=0.2). Collectively, endothelial and lung cancer cells seem to interact via various paracrine pathways, e.g. by the reciprocal induction of VEGF and PDGF-BB. Thus, targeting key molecules would result in expression alterations of multiple factors and alter the biological functions of both stromal and tumor cells.
journal_name
Int J Oncoljournal_title
International journal of oncologyauthors
Reinmuth N,Rensinghoff S,Raedel M,Fehrmann N,Schwöppe C,Kessler T,Bisping G,Hilberg F,Roth GJ,Berdel W,Thomas M,Mesters RMsubject
Has Abstractpub_date
2007-09-01 00:00:00pages
621-6issue
3eissn
1019-6439issn
1791-2423journal_volume
31pub_type
杂志文章abstract::Observational, clinical and experimental studies have suggested that dietary supplementation with selenium can inhibit the development of colon cancer. Since toxicity and chemopreventive efficacy of selenium compounds depend to a large extent, on the form of selenium the development of efficacious organoselenium compo...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.13.1.29
更新日期:1998-07-01 00:00:00
abstract::Gene amplification is a frequent event in lung cancer, specifically in squamous cell lung carcinoma. Recently, we reported amplifications on chromosomal bands 3q26.1-q26.3 with the genes BCHE and SLC2A2 amplified in 40% of squamous cell lung carcinomas. Here, we identified an amplified domain within chromosomal bands ...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.17.1.67
更新日期:2000-07-01 00:00:00
abstract::CDC28 protein kinase regulatory subunit 2 (CKS2) is a cyclin-dependent kinase subunit (CKS) family member that participates in cell cycle regulation. Few studies have investigated its involvement in gastric cancer. In this study, we focused on the clinical and biological significance of CKS2 over-expression in gastric...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2011.1056
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abstract::Lin28 is a family of RNA binding proteins and microRNA regulators. Two members of this family have been identified: Lin28A and Lin28B, which are encoded by genes localized in different chromosomes but share a high degree of sequence identity. The role of Lin28B in androgen-independent prostate cancer (AIPC) is not wel...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2014.2647
更新日期:2014-12-01 00:00:00
abstract::The cell survival activity of human glioma cells is largely dependent on autocrine fibroblast growth factor (FGF) signaling. Caspases, a family of cysteine proteases, play an integral part in the execution phase of apoptosis. To better understand the mechanism of resistance to apoptosis in human glioma cells, we inves...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2008-02-01 00:00:00
abstract::Retroviral infection of hTERT, the catalytic component of telomerase, into BJ fibroblasts (population doubling 28) resulted in reconstitution of telomerase activity, telomere maintenance, and extension of in vitro lifespan. The hTERT-infected cells also exhibited increased growth rate and colony forming efficiency rel...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2002-06-01 00:00:00
abstract::Release of DNA fragments into the culture supernatant of human promyelocytic cell line HL-60 was investigated. The released DNA has previously been shown to have a strong immunosuppressive effect on the proliferation of mitogen-stimulated human peripheral lymphocytes and some cancer cell lines. In this study, HL-60 ce...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.4.2.417
更新日期:1994-02-01 00:00:00
abstract::In a retrospective analysis of 91 consecutive oral carcinomas we reviewed all patient records and weighed clinicopathological parameters against the results of image DNA cytometry and p53 immunhistochemical staining of the initial diagnostic biopsies. Eighty-seven percent of the biopsies were either aneuploid or nondi...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.5.4.915
更新日期:1994-10-01 00:00:00
abstract::We studied the expresssion of estrogen (ER), progesterone (PgR), and androgen receptors (AR) in hepatocellular carcinoma (HCC) and found expression in (7/36), 3.2% (1/31), 16.7% (4/24) of cases, respectively. The expression of ER did not correlate with histological grade, tumor size, or stage of disease. On the other ...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.4.6.1349
更新日期:1994-06-01 00:00:00
abstract::Polo-like kinase 1 (PLK1), a serine/threonine kinase and an oncogene, is crucial in regulating cell cycle progression. PLK1 also has been demonstrated as a potential target of osteosarcoma (OS) by using short hairpin RNA libraries in lentiviral vectors for screening of protein kinase. In preclinical studies, GSK461364...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2016.3352
更新日期:2016-03-01 00:00:00
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journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.8.4.727
更新日期:1996-04-01 00:00:00
abstract::Degradation of the extracellular matrix is a prerequisite for the invasive phenotype in glioma cells. Several proteases released by invading tumor cells seem to participate in the focal degradation of extracellular matrix proteins. Using enzymatic assays, Western blotting, and Northern blotting techniques, we investig...
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pub_type: 杂志文章
doi:10.3892/ijo.19.3.519
更新日期:2001-09-01 00:00:00
abstract::Following the publication of the above paper, an interested reader drew to the authors' attention that, in Fig. 2D, the si‑ITGB3/E‑cadherin image appeared to show an overlap with the Scr/MDA231+CCL18/N‑cadherin image from Fig. 4E in a paper published in 2013 that shared some of the same authors [Zhang B, Yin C, Li H, ...
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doi:10.3892/ijo.2021.5169
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journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo_00000564
更新日期:2010-04-01 00:00:00
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journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2005-06-01 00:00:00
abstract::Malignant gliomas are diffuse infiltrative growing tumors with a poor prognosis despite treatment with a combination of surgery, radiotherapy and chemotherapy. It has been shown recently that complete tumor resection improves the survival time significantly. Hypericin, a component of St. Johns Wort, is one of the most...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2011.968
更新日期:2011-05-01 00:00:00
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journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2005-09-01 00:00:00
abstract::Activation of the Wingless (Wnt)/ß-catenin signaling pathway contributes to prostate tumorigenesis and metastasis. Depending of the stage of prostate cancer development, current drug therapies are of limited efficiency, so that prevention with natural compounds appears as an attractive strategy especially due to the s...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2011.905
更新日期:2011-03-01 00:00:00
abstract::On the basis of the gene expression profiles of 120 lung cancer cases using a cDNA microarray containing 27,648 genes or expressed sequence tags (ESTs), we identified LRRC42 (Leucine-rich repeat containing 42) to be significantly upregulated in the majority of lung cancers. Northern blot analysis demonstrated that LRR...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2014.2418
更新日期:2014-07-01 00:00:00
abstract::Acquirement of multi-drug resistance by tumor cells represents a major obstacle in the management of prostate cancer. Such resistance was demonstrated in the androgen-independent DU-145 cells in response to paclitaxel and the mechanisms by which these cell develops resistance was not understood. The objective of this ...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2003-08-01 00:00:00
abstract::The regions upstream from the human N-myc gene were examined for both transcription and replication. The plasmids containing several N-myc regions linked to the bacterial chloramphenicol acetyltransferase (CAT) gene were transfected to human neuroblastoma IMR32 cells. The results indicated that the region spanning fro...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.5.3.603
更新日期:1994-09-01 00:00:00
abstract::Proteasome activator 28γ (PA28γ) binds to and activates the proteasome in an ATP-independent manner to promote mainly ubiquitin-independent protein degradation in cells. Previously, four transcript variants of PA28γ have been identified, which have been closely correlated with the progression of cancers. In the presen...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2015.2980
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journal_title:International journal of oncology
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abstract::We have previously shown that growth of the oral squamous cell carcinoma cell line SAS, is resistant to cetuximab in monolayer culture conditions, even though epidermal growth factor receptor (EGFR) was phosphorylated, but the growth of SAS aggregates was sensitive to cetuximab. In the present study, we demonstrate di...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2015.3215
更新日期:2015-12-01 00:00:00
abstract::Gliomas are malignant brain tumors thought to arise through multi-step tumorigenesis, involving both the activation of oncogenes and the loss of tumor suppressor genes. The cyclin D1 gene encodes a proto-oncogenic cell cycle regulator implicated in the pathogenesis of several types of cancer, including gliomas. Northe...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.9.3.493
更新日期:1996-09-01 00:00:00
abstract::The two-kringle domain of tissue-type plasminogen activator (TK1-2) has been identified as a novel angiogenesis inhibitor. In the previous study, purified Pichia-derived TK1-2 has been shown to suppress in vivo growth of human lung and colon cancer cells. Here, we demonstrate that E. coli-derived non-glycosylated TK1-...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2006-02-01 00:00:00
abstract::Although it is well established that ras genes contribute to tumourigenesis either through the accumulation of mutations or by aberrant expression in a wide range of human cancers, little is known regarding their involvement in human nasal polyps (NPs). In the present study, the occurrence of mutations in codons 11 an...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2007-11-01 00:00:00
abstract::Squamous cell carcinoma antigen (SCCA) is overexpressed in many squamous cell cancers and SCCA‑derived peptide-specific CD8(+) cytotoxic T lymphocytes can display cytotoxicity against tumor cells. In the present study, we screened the SCCA amino acid sequence for potential HLA-A*0201-binding CD8(+) T‑cell epitopes usi...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2013.1834
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abstract::A group of 133 primary oral squamous cell carcinomas were studied concerning a relationship between exposure factors and tumour biological parameters with a focus on the TP53 gene and p53 protein status. Tumours were evaluated using immunohistochemistry (IHC) for expression of p53, PCNA, Ki-67 and bcl-2 proteins. The ...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.22.4.861
更新日期:2003-04-01 00:00:00
abstract::Recent studies show an increased incidence of head and neck cancers worldwide. The present study evaluated the trend in the incidence of head and neck cancers in England during 2002-2011. Data were extracted from the database of Office for National Statistics. The study population was categorised according to age, res...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2015.2990
更新日期:2015-07-01 00:00:00