Abstract：
BACKGROUND:Although significant accumulation of prostaglandin E(2) (PGE(2)) in the human prostate cancer tissues has been reported, there is lack of substantial evidence regarding the key role of PGE(2)-induced E-prostanoid-4 receptor (EP4) on Snail, a master regulator of epithelial mesenchymal transition (EMT). In this study, we investigated a novel connection between PGE(2)-induced EP4 and Snail (encodes DNA binding zinc finger protein that acts as transcriptional repressor) signaling in prostate cancer. MATERIALS AND METHODS:To investigate the key role of serum PGE(2), EP4, p-Akt and Snail in prostate cancer progression, we used prostate-specific phosphatase and tensin homolog (PTEN)-knockout (PTEN-KO) mice of different age groups from 4 to 28 weeks. To determine the EP4-specific interaction with Snail in prostate cancer, we used cell-based assays, including siRNA knockdown, and treatment with EP4 antagonist. RESULTS:An interaction between EP4 with Snail was evident in prostate-specific PTEN-KO mice that showed an elevated level of PGE(2) in the serum and of EP4, p-Akt and Snail in the tissues. Prostate cancer cells transfected with EP4-siRNA and treatments with EP4 antagonist suggest a link between EP4, and Snail activation, potentially via p-Akt. Cells treated with EP4 antagonist exhibited a significant decrease in Snail, mesenchymal markers and cell migration, and cell cycle arrest with a gain in E-cadherin levels. CONCLUSION:Our findings provide key evidence that support there being a role of PGE(2)/EP4/p-Akt in Snail signaling and conferring cell survival advantage. Cancer progression via EMT can be reversed by an EP4 antagonist in this model of prostate cancer.
journal_name
Anticancer Resjournal_title
Anticancer researchauthors
Kim HN,Narayanan NK,Lasano S,Narayanan Bsubject
Has Abstractpub_date
2011-12-01 00:00:00pages
4347-57issue
12eissn
0250-7005issn
1791-7530pii
31/12/4347journal_volume
31pub_type
杂志文章,收录出版abstract：:Methyl-tertiary-butyl ether (MTBE) is a ubiquitous oxygen-bearing additive used to reduce engine knocking and obtain cleaner gasoline combustion. Conflicting data have been reported about a possible carcinogenic role of MTBE in humans. In this study we evaluated the effects of MTBE on cell growth and transformation in...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2002-07-01 00:00:00
abstract：:Chloroethylnitrosourea (CENU) chemotherapy is used for the treatment of melanoma tumors. The main mechanism of action of this anticancer agent is via DNA damage. We recently showed in murine experiments using a parental double B16 melanoma tumor model that, after treatment of primary tumors with cystemustine (CENU age...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2008-01-01 00:00:00
abstract：BACKGROUND/AIM:Novel treatment strategies aiming to eliminate or attenuate the invasive phenotype of glioblastoma multiforme (GBM), the most common and aggressive primary brain tumor, could offer a profound therapeutic benefit to patients. We previously demonstrated one method to create invasive sub-populations of GBM ...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2015-06-01 00:00:00
abstract：BACKGROUND:Our aim was to analyze the impact of intraperitoneal chemotherapy (IPC), administered with direct peritoneal puncture, on the survival of patients with pretreated ovarian cancer in a real-life setting. PATIENTS AND METHODS:This was a retrospective study comparing patients with advanced ovarian cancer treate...
journal_title：Anticancer research
pub_type： 杂志文章
doi：10.21873/anticanres.11256
更新日期：2016-12-01 00:00:00
abstract：:A human ovarian mesodermal mixed heterologous carcinoma, with a high content of cellular retinol-binding protein (CRBP), was used to study the effects of retinoid and hormonal treatment on tumour CRBP content, tumour growth rate, differentiation and turnover of CRBP. Tumour growth in general was accompanied by an incr...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：1989-01-01 00:00:00
abstract：BACKGROUND:Various prognostic factors have been investigated in order to predict the minority of male germ cell tumor (GCT) patients who will develop resistant disease. However, no prognostic system has been proven accurate. MATERIALS AND METHODS:Paraffin-embedded tissue specimens, obtained from primary lesions during...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2009-02-01 00:00:00
abstract：BACKGROUND:Histological parameters as well as the status of sentinel lymph node are known to be strong prognostic factors in patients with melanoma. PATIENTS AND METHODS:In this study, we retrospectively analyzed 1,384 patients who were diagnosed with head and neck melanoma between 1976 and 2010 regarding prognostic f...
journal_title：Anticancer research
pub_type： 杂志文章
doi：10.21873/anticanres.11759
更新日期：2017-07-01 00:00:00
abstract：UNLABELLED:The aim of the present study was to investigate hypoxia-inducible factor 1α (HIF-1α) and glucose transporter-1 (GLUT-1) expressions as predictors of response and survival after chemoradiotherapy in pretreatment biopsy specimens from patients with rectal cancer. MATERIALS AND METHODS:The immunohistological e...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2011-05-01 00:00:00
abstract：UNLABELLED:Gastric carcinoma occurs in response to chronic inflammation of gastric mucosa infected with Helicobacter pylori. It is not known how cytokines affect the growth and progression of gastric carcinoma. MATERIALS AND METHODS:We measured tissue concentrations of the proinflammatory cytokines interleukin (IL)-1b...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2005-03-01 00:00:00
abstract：BACKGROUND:Various localized side effects which accompany head and neck irradiation [IR] have been widely reported. However, systemic side effects/have been only sparsely reported in the short-term period post-IR in an animal model. The potential modulatory role of zinc-desferrioxamine [Zn-DFO] on IR effects was examin...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2000-05-01 00:00:00
abstract：PURPOSE:Despite more than four decades of fluoro-pyrimidine treatment in different cancers, the optimal schedule is still not known. The plasma half-life of 5-fluorouracil (5-FU) is extremely short and continuous infusion has gained popularity. In this study we explored whether repeated bolus 5-FU injections could impr...
journal_title：Anticancer research
pub_type： 临床试验,杂志文章
doi：
更新日期：2003-03-01 00:00:00
abstract：BACKGROUND/AIM:This study aimed to identify the prognostic factors and outcomes of osteosarcoma (OS) located in proximal versus distal extremity long bones. PATIENTS AND METHODS:A nationwide cohort comprising all Norwegian high-grade OSs in extremity long bones between 1982 and 2009 was investigated. RESULTS:The univ...
journal_title：Anticancer research
pub_type： 杂志文章
doi：10.21873/anticanres.13365
更新日期：2019-05-01 00:00:00
abstract：BACKGROUND:Screening gastroscopic examinations were performed in a cohort of individuals at high risk for developing gastric carcinoma (GC). PATIENTS AND METHODS:Five gastric biopsies were obtained following the Houston schema. Five histological parameters of gastritis were investigated: acute gastritis, chronic gastr...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2012-05-01 00:00:00
abstract：BACKGROUND/AIM:Failure of cancer chemotherapy caused by multidrug resistance (MDR) of tumor cells is mediated by ABC transporters that reduce the uptake of cytotoxic agents. Similar transporters are responsible for amyloid clearance in nerve cells in Alzheimer's disease (AD). The aim of this study was to compare the bi...
journal_title：Anticancer research
pub_type： 杂志文章
doi：10.21873/anticanres.12608
更新日期：2018-06-01 00:00:00
abstract：:We have reported the presence of a CD4+ subpopulation of Natural Killer cells (NK) in humans. These cells also express HIV coreceptors CCR5 or CXCR4 and are infectable by HIV-1. Infection is productive and persistent in vitro and in vivo. Infected people under therapy have evidence of viral DNA in their NK pool. In vi...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2003-05-01 00:00:00
abstract：:The expression of the protooncogene encoded proteins (c-erbB1, c-erb B2, c-myc, c-fos) and the suppressor gene product p53 was analyzed in 81 human squamous cell carcinomas of the lung and correlated with clinical parameters of the patients (patient survival, presence of metastases and tumor stage) and with biological...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：1992-01-01 00:00:00
abstract：:Concomitant neoplasm and abdominal aortic aneurysm (AAA) is not a rare clinical association and can pose problems if antiblastic treatment is required. The literature shows lack of consensus owing to the fact that AAA can modify the liquid load and the hemodynamic setting so that chemotherapy toxicity profile becomes ...
journal_title：Anticancer research
pub_type： 杂志文章,评审
doi：
更新日期：1999-03-01 00:00:00
abstract：:The effects of dibutyryl cyclic AMP (DBcAMP) on tissue inhibitor metalloproteinase (TIMP) expression were studied in the human hepatoma cell line PLC/PRF/5 with relation to the invasive activity of the cells. Messenger RNA expression levels of metalloproteinases (MMP)-2 and 9, and TIMP-1, 2 and 3 in the cells were det...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：1999-11-01 00:00:00
abstract：:Cervical cancer is not considered a hormone-responsive tumor in spite of the presence of estrogen receptors (ER) and progesterone receptors (PgR) in some of them. Endocrine treatments have not achieved clinical responses, however, tamoxifen has been reported to induce PgR and to inhibit cell growth of many cervical ca...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：1993-11-01 00:00:00
abstract：BACKGROUND/AIM:Amentoflavone has been shown to be effective against a variety of cancer cells, but its role in bladder cancer remains unclear. Thus, the aim of this study is to evaluate whether amentoflavone may induce toxicity effect of bladder cancer. MATERIALS AND METHODS:Herein, we evaluated amentoflavone effects ...
journal_title：Anticancer research
pub_type： 杂志文章
doi：10.21873/anticanres.13512
更新日期：2019-07-01 00:00:00
abstract：AIM:The evaluation of toxicity after high-dose-rate interstitial brachytherapy (HDR-ISBT) as monotherapy for localized prostate cancer. MATERIALS AND METHODS:We analyzed early and late toxicities in 100 patients treated by HDR-ISBT as monotherapy at the National Hospital Organization Osaka National Hospital using both...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2014-04-01 00:00:00
abstract：BACKGROUND:Cancer of the oesophagus is the most common gastrointestinal malignancy in South African blacks. The aim of this study was to determine the reversible and irreversible lipid peroxidation in cancer of the oesophagus; a feature that has not been assessed before in this or other cancer tissue. METHODS:Biopsies...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：1998-03-01 00:00:00
abstract：BACKGROUND/AIM:Due to their unique composition of health-promoting compounds, the consumption of hazelnuts may contribute to the prevention of colon cancer. MATERIALS AND METHODS:Since hazelnuts are often consumed roasted, the impact of different roasting conditions (RC1=140.6°C/25 min, RC2=155.1°C/20 min and RC3=180....
journal_title：Anticancer research
pub_type： 杂志文章
doi：10.21873/anticanres.12195
更新日期：2018-01-01 00:00:00
abstract：BACKGROUND/AIM:Small cell lung cancer (SCLC) is still a deadly type of cancer for which there are few effective therapeutic strategies. Development of a new molecule targeting agent is urgently desired. Previously we showed that recombination signal binding protein for immunoglobulin-kappa-J region (RBPJ) and mastermin...
journal_title：Anticancer research
pub_type： 杂志文章
doi：10.21873/anticanres.12758
更新日期：2018-08-01 00:00:00
abstract：:In this immunohistochemical study we investigated the expression of Bcl-2 and Bax apoptosis related proteins in node-negative breast carcinomas. The results were correlated with the recurrence rate of the patients. In order to avoid the influence of the most important tumor prognostic parameters we selected two groups...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：1997-07-01 00:00:00
abstract：BACKGROUND/AIM:Roles for mutant (mt) KRAS in the innate immune microenvironment in colorectal cancer (CRC) were explored. MATERIALS AND METHODS:Human CRC HCT116-derived, mtKRAS-disrupted (HKe3) cells that express exogenous mtKRAS and allogenic cytokine-activated killer (CAK) cells were co-cultured in 3D floating (3DF)...
journal_title：Anticancer research
pub_type： 杂志文章
doi：10.21873/anticanres.14465
更新日期：2020-08-01 00:00:00
abstract：BACKGROUND/AIM:Intraperitoneal chemotherapy with taxanes provides high locoregional drug concentrations. Regarding their synergy with hyperthermia, results have been inconclusive. In this in vitro study, the thermal enhancement of the effect of paclitaxel and docetaxel on ovarian cancer cells under conditions mimicking...
journal_title：Anticancer research
pub_type： 杂志文章
doi：10.21873/anticanres.14700
更新日期：2020-12-01 00:00:00
abstract：:Mechanisms of tumor growth are concerned with the possibility that neoplasms are disturbed in their response to growth factors. Interleukin 2 (IL 2) is secreted by activated T-cells and is required for autocrine T-cell growth. Controversy exists as to the functional capacity of T-lymphocytes in patients with B-cell ch...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：1990-07-01 00:00:00
abstract：BACKGROUND:The activity of tyrosine kinases, although strictly regulated in normal cells, is often disturbed in cancer cells. The inhibition of a tyrosine kinase could be a target for treating cancer. MATERIALS AND METHODS:The colon cancer cell lines LS174T and HT-29 and the lung cancer cell line NCI-H292 were used. T...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2006-03-01 00:00:00
abstract：:The option to treat patients presenting with HER-2 overexpressed invasive breast carcinoma with Herceptin requires quantitative determination of the HER-2 status. The aim of this study was to retrospectively evaluate the HER-2 mRNA expression levels using quantitative real-time RT-PCR (Q-RT-PCR) in tissue samples from...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2005-11-01 00:00:00
