Abstract：
:A novel keto-diepoxide Sch 49209 and its derivative Sch 50672, produced by the fungus Nattrassia mangiferae, inhibited tumor cell invasion through an artificial basement membrane. These compounds, at nontoxic concentrations, inhibited invasion of HT-1080 cells in a dose-dependent manner. The IC50 values for Sch 49209 and Sch 50672 were 0.75 and 8 microM, respectively, when cells were incubated with drugs for 5 h. Sch 49209 inhibited both tumor cell invasion and cell motility to the same extent under conditions that did not cause any apparent cytotoxicity. Sch 4209 and Sch 50672, however, inhibited the growth of ras-transformed cells in a semisolid medium in a 5-day culture with IC50 values of 0.6 and 2.4 microM, respectively. They also inhibited the anchorage-dependent growth of pT24 cells in vitro with IC50 values of 0.5 and 0.9 microM for Sch 40209 and Sch 50672, respectively. Using the murine lung epidermoid carcinoma M27 cells implanted SC in mice as a model, we found both Sch 49209 and Sch 50672 inhibited the growth of this tumor at doses ranging from 2 to 10 mg/kg. These compounds also decreased the formation of spontaneous lung metastasis in this model. Sch 50672 inhibited the growth of human tumor xenografts, SW620 and A431, in athymic mode mice. Our data suggest that keto-diepoxides inhibit tumor growth and metastasis and that this activity may be due, in part, to anti-invasive activity.
journal_name
Oncol Resjournal_title
Oncology researchauthors
King I,Blood C,Chu M,Patel M,Liu M,Li Z,Robertson N,Maxwell E,Catino JJsubject
Has Abstractpub_date
1995-01-01 00:00:00pages
1-5issue
1eissn
0965-0407issn
1555-3906journal_volume
7pub_type
杂志文章abstract：:Combretastatin A4 phosphate (CA4P) is currently undergoing clinical trials as a tumor vascular-targeting agent. Here, we defined the antivascular effect and programmed cell death (PCD) induced by CA4P in vascular endothelial cells. CA4P induced time- and dose-dependent antiproliferative activities against human umbili...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504011x13079697132790
更新日期：2011-01-01 00:00:00
abstract：:The poly(ADP-ribose) polymerase (PARP) enzymes play a key role in the regulation of cellular processes (e.g., DNA damage repair, genomic stability). It has been shown that PARP inhibitors (PARPIs) are selectively cytotoxic against cells having dysfunctions in genes involved in DNA repair mechanisms (synthetic lethalit...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504017X14926854178616
更新日期：2017-11-02 00:00:00
abstract：:All-trans-Retinoic acid (RA) induces differentiation and inhibits growth of many tumor types. Whereas the RA nuclear receptors mediate genomic effects of RA, there also are many nongenomic effects that do not have defined mechanisms. Some nongenomic effects of RA may involve retinoylation (RA acylation), a posttransla...
journal_title：Oncology research
pub_type： 杂志文章
doi：
更新日期：1997-01-01 00:00:00
abstract：:Tamoxifen causes a mitochondrial transmembrane potential dysfunction and ATP depletion, which may play a role in tamoxifen cytotoxicity. Administration of oligomycin-2 deoxy glucose (2DG) enhanced tamoxifen antiproliferative effects, which may be due to exacerbated ATP depletion following tamoxifen and oligomycin-2DG ...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504009x12596189659204
更新日期：2009-01-01 00:00:00
abstract：:Pyroptosis is a type of proinflammatory programmed cell death mediated by caspase 1 activity and occurs in several types of eukaryotic tumor cells, including gliomas. MicroRNAs (miRNAs), small endogenous noncoding RNAs, have been demonstrated to be advantageous in glioma therapy. However, the question of whether miRNA...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504016X14813859905646
更新日期：2017-07-05 00:00:00
abstract：:Our recent studies have shown that vanadium, a dietary micronutrient, has an inhibitory response against experimentally induced rat liver carcinogenesis. In the present study, the effect of vanadium on hepatic xenobiotic biotransformation in rats exposed to diethylnitrosamine (DENA, 200 mg/kg, IP) was investigated to ...
journal_title：Oncology research
pub_type： 杂志文章
doi：
更新日期：1999-01-01 00:00:00
abstract：:Ahead of Print article withdrawn by publisher. ...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504016X14747357310629
更新日期：2016-09-30 00:00:00
abstract：:MicroRNAs (miRNAs) are emerging as pivotal regulators in the development and progression of various cancers, including renal cell carcinoma (RCC). MicroRNA-384 (miR-384) has been found to be an important cancer-related miRNA in several types of cancers. However, the role of miR-384 in RCC remains unclear. In this stud...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504017X15035025554553
更新日期：2018-04-10 00:00:00
abstract：:The present study evaluated the modulatory effects of zinc on colonic membrane fluidity and surface abnormalities following 1,2 dimethylhydrazine (DMH)-induced colon carcinogenesis. Rats were segregated into four groups: normal control, DMH treated, zinc treated, DMH + zinc treated. Colon carcinogenesis was initiated ...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504009789745665
更新日期：2009-01-01 00:00:00
abstract：:Accumulated studies have strongly implicated aberrantly expressed microRNAs (miRNAs) in carcinogenesis and cancer progression of various cancers, including colorectal cancer (CRC). Hence, a comprehensive study of miRNAs and their association with CRC may be a promising therapeutic method for patients with this maligna...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504018X15188747585738
更新日期：2018-10-17 00:00:00
abstract：:The potential of American ginseng (AG) ( Panax quinquefolium), a commonly used herbal remedy believed to have anticarcinogenic effects, to prevent the development of mammary tumors was evaluated in a mouse model of dimethylbenzanthracene (DMBA)-induced mammary carcinoma. Ginsenosides, believed to be the active compone...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/000000006783981017
更新日期：2006-01-01 00:00:00
abstract：:Carbonic anhydrase (CA) IX has emerged as a promising target for cancer therapy. It is highly upregulated in hypoxic regions and mediates pH regulation critical for tumor cell survival as well as extracellular acidification of the tumor microenvironment, which promotes tumor aggressiveness via various mechanisms, such...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504017X14965111926391
更新日期：2018-03-05 00:00:00
abstract：:Pancreatic cancer is characterized as a type of gastrointestinal tumor with a poor prognosis and high degree of malignancy. CIITA gene was found highly methylated in pancreatic carcinoma cell line PANC-1 and responsible for the low expression of major histocompatability complex II (MHC-II) that may lead to immune evas...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504014X13983417587320
更新日期：2013-01-01 00:00:00
abstract：:Drug resistance is the major obstacle for the successful therapy of lung adenocarcinoma. It was suggested that ß-elemene, a major isoform of elemene, could reverse the drug resistance in lung cancer cells. However, the underlying mechanisms remains poorly known. Here, we aimed to investigate whether elemene is involve...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504017X14954936991990
更新日期：2017-05-23 00:00:00
abstract：:Lung cancer is a lethal solid tumor with poor prognosis because of its high metastasis and resistance to current therapies. Recently, cancer stem cells (CSCs) were suggested to be major contributors to tumorigenicity and cancer relapse. However, therapeutic targets for lung cancer-related CSCs remain undetermined. The...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504013X13685487925095
更新日期：2013-01-01 00:00:00
abstract：:The sequence of biochemical and molecular events that mediate growth arrest and cell death in tumor cells exposed to agents that induce DNA damage is poorly defined. This commentary exploits the recent explosion of information regarding oncogenes, tumor suppressor genes, and cell-cycle regulatory genes to develop a mo...
journal_title：Oncology research
pub_type： 杂志文章,评审
doi：
更新日期：1993-01-01 00:00:00
abstract：:A series of bis-aziridinylnaphthoquinone derivatives has been prepared. The cytotoxic activities and DNA alkylation abilities of these synthetic bis-aziridinylnaphthoquinone derivatives were investigated. They displayed significant cytotoxicity against human carcinomna cell lines and weak cytotoxic activities against ...
journal_title：Oncology research
pub_type： 杂志文章
doi：
更新日期：2003-01-01 00:00:00
abstract：:Ameloblastoma is the most frequently encountered odontogenic tumor, characterized by a locally invasive behavior, frequent recurrences, and, although rare, metastatic capacity. Loss or inactivation of tumor suppressor genes (TSGs) allows cells to acquire neoplastic growth. The ING family proteins are tumor suppressors...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504010x12704916124864
更新日期：2010-01-01 00:00:00
abstract：:Small-cell lung cancer (SCLC) has a significantly worse prognosis than other forms of bronchogenic carcinoma. Because transforming growth factor beta (TGF-beta) appears to play an important role in the pathogenesis of SCLC, we examined the status of the TGF-beta receptor system in a series of 11 human small-cell carci...
journal_title：Oncology research
pub_type： 杂志文章
doi：
更新日期：1997-01-01 00:00:00
abstract：:Agosterol A (AG-A) is a novel agent that reverses P-glycoprotein (P-gp) and multidrug resistance protein-1 (MRP1)-meditated multidrug resistance (MDR). We have synthesized [125I]11-azidophenyl agosterol A (azidoAG-A), a photoaffinity analog of AG-A, and characterized its binding to P-gp in membrane vesicles prepared f...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/000000003108748595
更新日期：2003-01-01 00:00:00
abstract：:Human telomerase is a ribonucleoprotein that maintains telomeres by adding TTAGGG tandem repeat sequences using RNA template of the enzyme. Telomerase activity is highly expressed in immortalized cells but not in most somatic cells, except for some renewal tissues, such as hematopoietic stem cells. Therefore, telomera...
journal_title：Oncology research
pub_type： 杂志文章
doi：
更新日期：1998-01-01 00:00:00
abstract：:Ovarian cancer is highly malignant with a gradually increasing incidence and a high mortality rate. Immunosuppression is induced in ovarian cancer, although the mechanism detail is not clear. It has been indicated that HVEM (herpesvirus entry mediator) B- and T-lymphocyte attenuator (BTLA) negatively regulates the imm...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504016X14641336229602
更新日期：2016-01-01 00:00:00
abstract：:A1, a member of the Bcl-2 gene family, was originally identified as a hemopoietic-specific early response gene. Later it was found that A1 was overexpressed in human stomach cancer tissues and was induced by tumor necrosis factor-alpha (TNF-alpha) in human vascular endothelial cells. However, its expression in human c...
journal_title：Oncology research
pub_type： 杂志文章
doi：
更新日期：1997-01-01 00:00:00
abstract：:HeLa cells were transfected with full-length multidrug resistance protein (MRP) cDNA and with MRP cDNAs that had been mutated at certain nucleotide binding domains. Stable transfectants were isolated and those producing equivalent amounts of P190 were tested in cytotoxicity assays using a variety of chemotherapeutic a...
journal_title：Oncology research
pub_type： 杂志文章
doi：
更新日期：1997-01-01 00:00:00
abstract：:Treatment of female SKH-1 hairless mice with ultraviolet B light twice a week for 20 weeks resulted in a population of tumor-free mice with a high risk of developing skin tumors during the next several months in the absence of additional UVB treatment (high-risk mice). Topical applications of nondenatured soymilk but ...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/0965040041292350
更新日期：2004-01-01 00:00:00
abstract：:Hepatocellular carcinoma (HCC) is one of the most common malignancies, with a poor prognosis and high recurrence rate. In the present study, we identified CD133, one of the markers of cancer stem cells, as a novel molecular target of tumor necrosis factor-related apoptosis-inducing ligand (TRAIL). In four human HCC ce...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504016X14685034103950
更新日期：2016-10-27 00:00:00
abstract：:DNA topoisomerase II alpha is a nuclear enzyme essential for DNA metabolism and cell cycle progression. Previous studies have shown that human tumor cell lines can express more than one topoisomerase II alpha isoform through alternative splicing. A 160-kDa isoform of topoisomerase II alpha has been described in severa...
journal_title：Oncology research
pub_type： 杂志文章
doi：
更新日期：1997-01-01 00:00:00
abstract：:Accumulation of beta-catenin in cytoplasm and nuclei is frequently observed in a wide variety of tumors arising, for example, in the colon, liver, uterus, or brain. In association with Tcf/LEF transcription factors, beta-catenin regulates expression of genes involved in the Wnt/wingless signaling pathway, but the prec...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504001108747477
更新日期：2001-01-01 00:00:00
abstract：:Chemoresistance is a major impediment to the successful treatment of cancer. It involves various mechanisms, including defects in the apoptosis program that is induced by anticancer drugs. To further explore the mechanisms underlying the development of chemoresistance in ovarian carcinoma after cisplatin (CDDP) treatm...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504003108748410
更新日期：2003-01-01 00:00:00
abstract：:HL-60 cells isolated for resistance to vincristine are multidrug resistant and defective in the cellular accumulation of drug. Further studies demonstrate that these cells are also highly defective in 12-O-tetradecanoylphorbol-13-acetate (TPA) induced differentiation to macrophages. Analysis of this system demonstrate...
journal_title：Oncology research
pub_type： 杂志文章
doi：
更新日期：1992-01-01 00:00:00
