Abstract:
:The importance of receptors involved in the clearance of proteases and protease/inhibitor complexes in tumor invasion is unknown. We studied the expression of the low density lipoprotein receptor-related protein/alpha 2-macroglobulin receptor (LRP/alpha 2-MR), the major receptor involved in the clearance of protease/inhibitor complexes, in invasive and noninvasive subclones derived from tumor cells. The receptor activity was 2- to 3-fold lower in invasive subclones compared to noninvasive subclones derived from human prostate PC-3 and DU 145 and melanoma A2058 cells. The receptor activity was decreased in breast cancer (MCF-10A) cells transfected with mutated Ha-ras compared to nontransfected cells. Furthermore, invasive cells derived from ras-transfected MCF-10A cells expressed lower levels of receptor compared to their non-invasive counterparts. These studies indicate a correlation between invasive phenotype and low receptor expression in different tumor cells. Experiments were performed to understand two possible mechanisms (decreased transcription of the receptor and increased transcription of an inhibitory protein) for the decreased cell-surface expression of the receptor in invasive cells. The decreased expression in invasive subclones was due to 2- to 3-fold lower levels of LRP/alpha 2-MR mRNA in all cells. In invasive PC-3 subclones, but not in DU 145, A2058, and MCF-10A subclones, 2-fold higher levels of the 39 kDa receptor-associated protein (an inhibitor of the receptor) mRNA were observed. These studies showed that the decreased expression of LRP/alpha 2-MR activity in invasive subclones was generally correlated with the decreased steady-state mRNA levels of the receptor.(ABSTRACT TRUNCATED AT 250 WORDS)
journal_name
Oncol Resjournal_title
Oncology researchauthors
Kancha RK,Stearns ME,Hussain MMsubject
Has Abstractpub_date
1994-01-01 00:00:00pages
365-72issue
8eissn
0965-0407issn
1555-3906journal_volume
6pub_type
杂志文章abstract::Triptorelin, a kind of GnRH agonist, is widely used in the treatment of hormone-responsive cancers in the clinic. This study aimed to discover the underlying mechanism of triptorelin in protection from 5-fluorouracil (5-FU)-induced ovarian damage in Sprague-Dawley rats. In the present study, after using 5-FU to induce...
journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/096504015X14410238486720
更新日期:2014-01-01 00:00:00
abstract::Kiss-1 has been identified as a putative metastasis suppressor gene in various human malignancies. However, there is little information about its possible role in gastric carcinoma. In this study, we determined whether the Kiss-1 gene negatively regulates MMP-9 expression. cDNA microarray technology was used to identi...
journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/096504009789954591
更新日期:2009-01-01 00:00:00
abstract::Colorectal cancer is an aggressive malignancy for which there are limited treatment options. Oncolytic vaccinia virus isbeing developed as a novel strategy for cancer therapy. Arming vaccinia virus with immunostimulatory cytokines can enhance the tumor cell-specific replication and antitumor efficacy. Interleukin-24 (...
journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/096504020X15942028641011
更新日期:2020-07-08 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::Aberrantly expressed microRNAs (miRNAs/miRs) and their role in cancer development have recently gained more attention. However, the potential role of miRNAs in hepatocellular carcinoma (HCC) remains largely unknown. In this study, we demonstrated that miR-377 was markedly downregulated in HCC cell lines and primary hu...
journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/096504016X14719078133168
更新日期:2017-01-02 00:00:00
abstract::Epithelial ovarian cancer (EOC) has remained an enigmatic disease, the etiology of which is mostly unknown. Considering the age incidence around menopause, a "gonadotrophin theory" has been proposed, and considering the association with infertility, an "incessant ovulation" theory has been proposed. EOC originates fro...
journal_title:Oncology research
pub_type: 杂志文章,评审
doi:10.3727/096504008786111383
更新日期:2008-01-01 00:00:00
abstract::The mechanism of action of the anthraquinone antileukemic drug mitoxantrone (MIT) was investigated and compared with that of daunorubicin (DNR) with emphasis on the interaction with DNA to clarify the more potent cytotoxic activity of MIT than DNR in human leukemia cells. MIT showed similar characteristics to those of...
journal_title:Oncology research
pub_type: 杂志文章
doi:
更新日期:1996-01-01 00:00:00
abstract::Phosphorothioate oligonucleotides have a potential as therapeutic agents. The pharmacokinetics, tissue distribution, stability, and cellular uptake by LOX ascites tumor of p120 antisense phosphorothioate oligonucleotide, ISIS 3466, were studied in vivo. The oligonucleotide, which was quickly cleared from the circulati...
journal_title:Oncology research
pub_type: 杂志文章
doi:
更新日期:1994-01-01 00:00:00
abstract::Kaempferol is a flavonoid that has been extensively investigated owing to its antitumor effects. Nevertheless, little is known about its underlying mechanisms of action. We aimed to explore the role of kaempferol in breast cancer (BC), and thus we investigated how kaempferol suppresses the growth of BC cells. The cell...
journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/096504018X15228018559434
更新日期:2019-06-21 00:00:00
abstract::We have investigated the role of protein kinase C (PKC) in the multidrug resistance (MDR) phenotype of human KB carcinoma cell lines. The PKC activator 12-O-tetradecanoylphorbol-13-acetate (TPA) reduced daunomycin accumulation in both drug-sensitive KB-3-1 and MDR KB-C1 cells in a time-dependent manner. The inactive p...
journal_title:Oncology research
pub_type: 杂志文章
doi:
更新日期:1996-01-01 00:00:00
abstract::Hepatocellular carcinoma (HCC) is the third leading cause of cancer-associated mortality worldwide. Although the mechanisms of HCC progression are not well understood, recent studies demonstrated the potential contribution of uric acid transporter SLC2A9 to tumor suppression. However, the roles and underlying mechanis...
journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/096504018X15199489058224
更新日期:2019-05-07 00:00:00
abstract::Gastric cancer (GC) is the most common epithelial malignancy worldwide. Basic transcription factor 3 (BTF3) plays a crucial role in the regulation of various biological processes. We designed experiments to investigate the molecular mechanism underlying the role of BTF3 in GC cell proliferation and metastasis. We conf...
journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/096504017X14886494526344
更新日期:2017-11-02 00:00:00
abstract::It has been reported that upregulated SIRT1 (NAD(+)-dependent class III histone deacetylase) deacetylates the p53 protein, represses its function, and allows for tumor cell growth in various cancers. Here we investigated antitumor effects of tenovin-6, a small-molecule inhibitor of SIRT1 and SIRT2, in various colon ca...
journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/096504013X13854886566598
更新日期:2013-01-01 00:00:00
abstract::Mutations in the APC gene contribute to development of sporadic desmoid tumors as well as to the hereditary tumors that usually accompany familial adenomatous polyposis (FAP). Adenomatous polyposis coli (APC) mutations cause an intracellular accumulation of beta-catenin that results in abnormal signaling in the wnt/wi...
journal_title:Oncology research
pub_type: 杂志文章
doi:
更新日期:1998-01-01 00:00:00
abstract::Point mutations and deletions in the p53 tumor suppressor gene occur frequently in advanced stage bladder tumors. To extend these observations to an in vitro model of bladder tumorigenicity, we have evaluated the presence of p53 mutations in a panel of bladder carcinoma cell lines. p53 alleles were cloned using the re...
journal_title:Oncology research
pub_type: 杂志文章
doi:
更新日期:1994-01-01 00:00:00
abstract::ErbB4 is a member of the ErbB family of receptor tyrosine kinases. Because of a paucity of appropriate pharmacologic tools, little is known about ErbB4 functions in vivo. In response to this need, we hypothesized that a recombinant form of the extracellular domain of ErbB4 would antagonize ligand-induced receptor tyro...
journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/0965040042707907
更新日期:2004-01-01 00:00:00
abstract::Previous studies demonstrated that an antisense phosphorothioate oligodeoxynucleotide, ISIS 3466, to the human nucleolar p120 protein, markedly inhibited the growth of human tumor cell lines in vitro and inhibited the growth of the human LOX tumor in vivo in an i.p./i.p. model, in the presence of DOTMA (Perlaky et al....
journal_title:Oncology research
pub_type: 杂志文章
doi:
更新日期:1993-01-01 00:00:00
abstract::Lung cancer is the leading cause of deaths due to cancer. Studies suggest an important role of microRNAs (miRNAs) in a variety of cancers, including lung cancer. In the present study, we evaluated the role of miR-641 in human lung cancer A549 cells. Quantitative RT-PCR and Western blot were used to measure mRNA and pr...
journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/096504017X15021536183490
更新日期:2018-06-11 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::Thymosin-beta-4 (TB4) as an actin-sequestering peptide has been detected outside of cells in blood plasma or in wound fluid. TB4 induces tumor metastasis and paclitaxel resistance, which is the most significant obstacle to successful therapy in tumors. Here we investigated the inhibitory effect of TB4 peptides on tumo...
journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/096504007783438349
更新日期:2007-01-01 00:00:00
abstract::PPAR-gamma is known to have a growth-suppressive effect in different cancers. In this study, we investigated the role of PPAR-gamma in the development of Barrett's esophagus (BE) and esophageal adenocarcinoma (EA). We used immunohistochemistry and real-time PCR to analyze differences in PPAR-gamma protein and mRNA exp...
journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/096504011x12935427587849
更新日期:2011-01-01 00:00:00
abstract::Aberrant expression of microRNA-92a (miR-92a) has been investigated in various cancers. However, the function and mechanism of miR-92a in acute myeloid leukemia (AML) remain to be elucidated. Our data showed that miR-92a was evidently downregulated and methylenetetrahydrofolate dehydrogenase 2 (MTHFD2) was remarkably ...
journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/096504016X14829256525028
更新日期:2017-08-07 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::Venous thromboembolism (VTE) occurs at an increased incidence in cancer patients. A cancer-related hypercoagulable state has been considered to play role in this phenomenon. Preclinical data suggest an association between tumor expression of MET proto-oncogene (MET) and a hypercoagulable state, resulting in VTE. We in...
journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/096504010x12828372551786
更新日期:2010-01-01 00:00:00
abstract::Currently, multiple microRNAs (miRNAs) have been found to play vital roles in the pathogenesis of osteosarcoma. This study aimed to investigate the role of miR-21 in osteosarcoma. The level of miR-21 in 20 pairs of osteosarcoma and corresponding adjacent tissues was monitored by qPCR. Human osteosarcoma cell line SAOS...
journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/096504017X14841698396829
更新日期:2017-08-07 00:00:00
abstract::This study aimed to explore the effects of lncRNA BCAR4 on the viability and aggressiveness of non-small cell lung cancer (NSCLC) cells. qRT-PCR was used to determine the expression of BCAR4 and GLI2 downstream genes in NSCLC tissues and cell lines. Chromatin isolation by RNA purification (CHIRP) and Western blot were...
journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/096504018X15220594629967
更新日期:2019-02-21 00:00:00
abstract::Our recent studies demonstrated that 12-O-tetradecanoylphorbol-13-acetate (TPA) has pharmacological activity for the treatment of acute myelocytic leukemia patients. In the present study, we investigated the potential synergistic effect of all-trans retinoic acid (RA), 1alpha,25-dihydroxyvitamin D3 (VD3), and sodium b...
journal_title:Oncology research
pub_type: 杂志文章
doi:
更新日期:2000-01-01 00:00:00
abstract::We have compared the effects of a number of inhibitors including aphidicolin, 2,4-dinitrophenol (DNP) and novobiocin on the in vitro cytotoxicity of several topoisomerase II (topo II)-directed agents, using cultured murine Lewis lung carcinoma cells. These agents comprised amsacrine, CI-921 (9-[(2-methoxy-4-methylsulf...
journal_title:Oncology research
pub_type: 杂志文章
doi:
更新日期:1993-01-01 00:00:00
abstract::Increasing evidence shows that beyond its role in coagulation, thrombosis interferes with carcinogenesis. Endothelial cell protein C receptor (EPCR) is a cellular receptor for protein C and activated protein C (APC). Such EPCR-induced signal transduction promotes cancer cell migration, invasion, and angiogenesis and i...
journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/096504013x13589503482932
更新日期:2012-01-01 00:00:00
abstract::Numerous data indicate that cellular oxidoreductases may be responsible for the cardiotoxic effects of antitumor anthracycline drugs as a consequence of the mediation by these agents of one-electron transfer from reduced nucleotides to atmospheric oxygen. This process is catalyzed primarily by NADH dehydrogenase, NADP...
journal_title:Oncology research
pub_type: 杂志文章
doi:10.3727/0965040042380450
更新日期:2004-01-01 00:00:00