Abstract:
:Singlet oxygen (1O2) generated by ultraviolet A irradiation has been reported to induce cytokine-dependent Matrix metalloproteinase-1 (MMP-1) expression in dermal fibroblasts. In the present study, we analyzed the effect of hypericin-based photodynamic therapy (PDT) on MMP-1 expression in two nasopharyngeal cancer (NPC) cell lines and an animal tumor model. MMP-1 protein and mRNA expression were evaluated by Western blot analysis and quantitative real-time reverse transcription-polymerase chain reaction (RT-PCR) respectively. Photoactivation of hypericin, a polycyclic phenanthroperylenedione, elicited an increase in MMP-1 protein and mRNA expression in well differentiated HK1 and poorly differentiated CNE-2 NPC cells in vitro. Similarly, there was up-regulation of MMP1 mRNA expression in hypericin-PDT-treated NPC/HK1-tumors. To our knowledge, this is the first time that modulation of MMP-1 expression has been demonstrated as a photodynamic effect of hypericin in NPC cells. This has clinical implications as MMP-1 is known to play an essential role in the biological process of matrix remodeling.
journal_name
Int J Oncoljournal_title
International journal of oncologyauthors
Du H,Olivo M,Mahendran R,Bay BHkeywords:
subject
Has Abstractpub_date
2004-03-01 00:00:00pages
657-62issue
3eissn
1019-6439issn
1791-2423journal_volume
24pub_type
杂志文章abstract::Medulloblastoma is the most common malignant brain tumor in childhood. The most prevalent chromosomal abnormalities are isochromosome 17q and loss of 17p, the location of the tumor suppressor gene p53. Mutations in the p53 gene in medulloblastoma are relatively infrequent but have recently been correlated to poor prog...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2010.884
更新日期:2011-03-01 00:00:00
abstract::p21WAF1/CIP1 protein is a cyclin-dependent kinase inhibitor, able to prevent the CDK2/cyclin E induced retinoblastoma protein (pRB) phosphorylation, thus inhibiting cell cycle progression at G1 phase. p21WAF1/CIP1 protein levels were examined in a series of 102 ovarian tissue samples including normal ovary, primary ov...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.17.6.1231
更新日期:2000-12-01 00:00:00
abstract::In order to optimize the management of patients with renal cell carcinoma (RCC) it is important to define the genetic risk for metastatic disease. In this study we performed comparative genomic hybridization (CGH) on metastatic tumors aiming at the identification of genetic alterations associated with metastatic disea...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.17.5.903
更新日期:2000-11-01 00:00:00
abstract::Meningiomas are the most commonly occurring tumors of the central nervous system including the brain and spinal cord. Malignant meningiomas are highly aggressive and frequently recur after surgical resection of the tumor. Our previous studies have reported that urokinase plasminogen activator receptor (uPAR) and matri...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2007-07-01 00:00:00
abstract::The Stockholm Central Railway Station in Sweden was investigated for public radiofrequency (RF) radiation exposure. The exposimeter EME Spy 200 was used to collect the RF exposure data across the railway station. The exposimeter covers 20 different radiofrequency bands from 88 to 5,850 MHz. In total 1,669 data points ...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2016.3657
更新日期:2016-10-01 00:00:00
abstract::The cell-adhesion properties of cancer cells can be targeted to block cancer metastasis. Although cytosolic lysyl-tRNA synthetase (KRS) functions in protein synthesis, KRS on the plasma membrane is involved in cancer metastasis. We hypothesized that KRS is involved in cell adhesion-related signal transduction for cell...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2016.3381
更新日期:2016-04-01 00:00:00
abstract::Functional defects in DNA mismatch repair genes have been shown to be associated mainly with hereditary human malignancies. We examined genomic DNA from 88 sporadic transitional cell carcinomas (TCCs) of the urinary tract for mutations in hMSH6 gene by polymerase chain reaction and direct sequencing analysis. Mutation...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2000-03-01 00:00:00
abstract::CD44 is a marker of cancer stem cells in head and neck squamous cell carcinoma, and CD44 expression is related to prognosis in cancer patients. We examined whether herbal medicine components affect CD44 expression and induce cancer cell apoptosis. Baicalin enhanced apoptosis with no effect on CD44 levels, while baical...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2016.3821
更新日期:2017-02-01 00:00:00
abstract::The presence of cancer stem cells in both solid and hematopoietic malignancies, has been recently linked to their pathogenesis. Sarcomas are rare, and diversely characterized by degrees of mesenchymal differentiation. The aim of the current study was to demonstrate whether the human sarcoma cell lines, osteosarcoma MG...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2009-05-01 00:00:00
abstract::Prostate cancer is the most commonly diagnosed cancer and the second leading cause of cancer related deaths in men in the United States. Ciprofloxacin is a relatively non-toxic antibiotic that can be easily administered orally with large volume of distribution and good tissue penetration. Studies from others and our l...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2002-07-01 00:00:00
abstract::Diosmetin, a plant flavonoid, has been shown to exert promising effects on prostate cancer cells as an anti‑proliferative and anticancer agent. In this study, using western blot analysis for protein expression and flow cytometry for cell cycle analysis, we determined that the treatment of the LNCaP and PC‑3 prostate c...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2018.4407
更新日期:2018-08-01 00:00:00
abstract::Clinical trials using antiangiogenic drugs revealed their potential against cancer. Unfortunately, a large percentage of patients does not yet benefit from this therapeutic approach highlighting the need of diagnostic tools to non-invasively evaluate and monitor response to therapy. It would also allow to predict whic...
journal_title:International journal of oncology
pub_type: 杂志文章,评审
doi:10.3892/ijo.2016.3553
更新日期:2016-08-01 00:00:00
abstract::Growth and inflammatory factors are associated with poor prognosis in gastric adenocarcinoma (GA); however, the additive effects of growth and inflammatory factors in GA remain unclear. In this study, we investigated the ability of epidermal growth factor (EGF) and interleukin (IL-1β) to activate extracellular signal-...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2014.2401
更新日期:2014-07-01 00:00:00
abstract::Gene amplification is frequently found in human glioblastoma but the mechanisms driving amplifications remain to be elucidated. Hypoxia as hallmark of glioblastoma is known to be involved in the induction of fragile sites that are central to gene amplification. We analyzed the potential of hypoxia (pO2 0%) and mini hy...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2008-09-01 00:00:00
abstract::Glioblastoma multiforme (GBM) is characterized by extensive angiogenesis that is mostly orchestrated by the hypoxia inducible factor HIF-1. Deregulation of HIF-1 is believed to contribute to cancer initiation and progression. However, instances have been described in which loss of HIF-1 leads to more aggressive tumors...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo_00000554
更新日期:2010-04-01 00:00:00
abstract::The Her-2 receptor coded for by the proto-oncogenic erbB-2 gene is a clinically validated target for treatment of a significant genetic subclass of breast cancers, and Her-2 is also overexpressed or mutated in a range of other cancers. In an approach to exploit antisense mediated splicing interference as a means of ma...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2010-01-01 00:00:00
abstract::A putative tumor suppressor, PTEN/MMAC1 gene was recently identified at 10q23 and was found to be frequently altered in several types of human tumors. To determine the possible role of this gene in human ovarian tumors, we screened 31 unselected primary epithelial ovarian cancers with matched normal tissues and 7 ovar...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.13.1.101
更新日期:1998-07-01 00:00:00
abstract::The in situ formation of cytotoxic metabolites by an enzyme-catalyzed reaction is a recent approach in cancer therapy. The present results show that multidrug-resistant human colon adenocarcinoma cells (LoVo) are significantly more sensitive than corresponding wild-type cells to hydrogen peroxide and aldehydes, the pr...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2006-10-01 00:00:00
abstract::Sphingosine-1-phosphate (S1P) is a bioactive phospholipid that transmits signals through G-protein-coupled receptors to control cellular differentiation, survival, and several functions of immune cells. S1P is a chemoattractant for NK cells, which are critical members of the immunological tumor surveillance machinery....
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2009-01-01 00:00:00
abstract::Raf-1 protein kinase plays an important role in cell growth, proliferation and cell survival. We have previously described the use of liposome-entrapped antisense raf oligonucleotide (LErafAON) to inhibit Raf-1 expression resulting in tumor growth inhibition and radiosensitization. The present study was undertaken to ...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2004-05-01 00:00:00
abstract::It is well established that the tumor microenvironment plays a major role in the aggressive behavior of malignant solid tumors. Among cell types associated with tumor microenvironment, tumor-associated macrophages (TAMs) are the most influential for tumor progression. Breast cancer is characterized by having a large p...
journal_title:International journal of oncology
pub_type: 杂志文章,评审
doi:10.3892/ijo.2013.1938
更新日期:2013-07-01 00:00:00
abstract::Patients with pancreatic cancer frequently demonstrate symptoms such as weight-loss and muscle wasting and have clinical evidence of a systemic inflammatory response. Such effects may be mediated by pro-inflammatory cytokines derived from tumor cells. The production of interleukin-6 and -8 by pancreatic cancer cell li...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.21.4.881
更新日期:2002-10-01 00:00:00
abstract::Angiogenesis is a prerequisite for the growth and metastasis of solid tumors. Studies have confirmed that in the absence of angiogenesis, tumors rarely have the ability to develop beyond a few millimeters in diameter. Tumor-associated endothelium is activated by the production of soluble factors by tumor and stromal c...
journal_title:International journal of oncology
pub_type: 杂志文章,评审
doi:
更新日期:2004-08-01 00:00:00
abstract::Currently, some evidence suggests that human multipotential mesenchymal stems cells (hMSCs) aid tumor growth and metastasis. Nutrient deprivation and oxygen deficiency are representative characteristics of solid tumor microenvironment during the cancer development. Because the effects of hMSCs on tumors under stressfu...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2013.1810
更新日期:2013-04-01 00:00:00
abstract::A precise diagnosis of peritoneal dissemination is necessary to determine the appropriate treatment strategy for colorectal cancer. However, small peritoneal dissemination is difficult to diagnose. 5-aminolevulinic acid (5-ALA) is an intermediate substrate of heme metabolism. The administration of 5-ALA to cancer pati...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2014.2417
更新日期:2014-07-01 00:00:00
abstract::Meningiomas are the most commonly occurring intracranial tumors and account for approximately 15-20% of central nervous system tumors. Patients whose tumors recur after surgery and radiation therapy have limited therapeutic options. It has also been reported recently that radiation triggers DNA repair, cell survival a...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2011.934
更新日期:2011-04-01 00:00:00
abstract::Multidrug-resistance (MDR) is largely caused by the efflux of therapeutics from the tumor cell by means of P-glycoprotein (P-gp), resulting in reduced efficacy of the chemotherapy. In order to overcome MDR, substances, such as verapamil and cyclosporin A (CsA), were employed. As these P-gp modulating agents did not se...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.23.6.1505
更新日期:2003-12-01 00:00:00
abstract::We investigated the effect of stabilized Fab oligomerization by disuccinimidyl suberate on tumor uptake in a pancreatic carcinoma xenograft model in nude mice. Recombinant mouse/human chimeric Fab of the anti-carcinoembryonic antigen (CEA) monoclonal antibody A10, which was previously shown to react specifically with ...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.14.1.139
更新日期:1999-01-01 00:00:00
abstract::Conventional chemotherapy produces varying degrees of response in patients with many advanced cancers and has significant side effects. Receptors for luteinizing hormone-releasing hormone (LH-RH) are present in a high percentage of human ovarian, prostatic, breast and endometrial tumors and targeted chemotherapy based...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.12.3.671
更新日期:1998-03-01 00:00:00
abstract::5-Fluorouracil (5-FU), a fluoropyrimidine analogue, is one of the most commonly used anticancer drugs for the treatment of gastrointestinal malignancies. Some studies reported that the cytotoxicity of fluoropyrimidines is mediated, in large part, by inhibition of the thymidylate synthase (TS), an essential DNA synthet...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2004-01-01 00:00:00