Abstract:
:The Wilms' tumor 1 gene (WT1) encodes a transcription factor involved in cell growth and development. As we previously reported, WT1 expression is hardly detectable in normal hepatic tissue but is induced in liver cirrhosis. Although WT1 has been found to be overexpressed in a number of malignancies, the role of WT1 in hepatocarcinogenesis has not been clarified. We found that WT1 is expressed in several human hepatocellular carcinoma (HCC) cell lines, including PLC/PRF/5 and HepG2, and in HCC tumor tissue in 42% of patients. WT1 small interfering RNAs did not affect proliferation rate of HCC cells but abrogated their resistance to anoikis. Transcriptome analysis of PLC/PRF/5 cells after WT1 knockdown showed up-regulation of 251 genes and down-regulation of 321. Ninety percent of the former corresponded to metabolic genes, mostly those characterizing the mature hepatocyte phenotype. On the contrary, genes that decreased upon WT1 inhibition were mainly related to defense against apoptosis, cell cycle, and tumor progression. In agreement with these findings, WT1 expression increased the resistance of liver tumor cells to doxorubicin, a compound used to treat HCC. Interestingly, doxorubicin strongly enhanced WT1 expression in both HCC cells and normal human hepatocytes. Among different chemotherapeutics, induction of WT1 transcription was restricted to topoisomerase 2 inhibitors. When WT1 expression was prohibited, doxorubicin caused a marked increase in caspase-3 activation. In conclusion, WT1 is expressed in a substantial proportion of HCC contributing to tumor progression and resistance to chemotherapy, suggesting that WT1 may be an important target for HCC treatment.
journal_name
Cancer Resjournal_title
Cancer researchauthors
Perugorria MJ,Castillo J,Latasa MU,Goñi S,Segura V,Sangro B,Prieto J,Avila MA,Berasain Cdoi
10.1158/0008-5472.CAN-08-2545subject
Has Abstractpub_date
2009-02-15 00:00:00pages
1358-67issue
4eissn
0008-5472issn
1538-7445pii
0008-5472.CAN-08-2545journal_volume
69pub_type
杂志文章相关文献
CANCER RESEARCH文献大全abstract::Interleukin-6 (IL-6) is a pleiotropic cytokine with a broad range of physiologic and pathologic functions. Because in cancer, IL-6 contributes to a microenvironment that promotes tumor cell survival, angiogenesis, and inflammation, understanding the mechanism responsible for its production is important. In neuroblasto...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-11-2165
更新日期:2012-05-01 00:00:00
abstract::The tropism of breast cancer cells for bone and their tendency to induce an osteolytic phenotype are a result of interactions between breast cancer cells and stromal cells and are of paramount importance for bone metastasis. However, the underlying molecular mechanisms remain poorly understood. We hypothesize that tum...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-09-3251
更新日期:2010-05-01 00:00:00
abstract::Pancreatic cancer is highly resistant to current chemotherapy agents. We therefore examined the effects of triptolide (a diterpenoid triepoxide) on pancreatic cancer growth and local-regional tumor spread using an orthotopic model of pancreatic cancer. We have recently shown that an increased level of HSP70 in pancrea...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-07-1077
更新日期:2007-10-01 00:00:00
abstract::To determine alpha-fetoprotein (AFP) immunogenicity in vivo, the presence of antibodies in sera of 60 hepatocellular carcinoma, 15 liver cirrhosis, and 15 chronic hepatitis patients was evaluated by Western blotting and immunoprecipitation analyses using purified human AFP. High titers of anti-AFP immunoglobulins were...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1999-11-01 00:00:00
abstract::Epidermal growth factor receptor (EGFR) expression by human breast cancer has been shown to predict poor patient outcome, as has amplification of the c-erbB-2 proto-oncogene. We have developed a quantitative immunohistochemical method for measuring protein levels of both receptors and have applied this to a series of ...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1996-08-15 00:00:00
abstract::Rat mammary carcinomas were induced by directly inserting activated neu or ras genes into in situ rat mammary ductal cells using replication-defective retroviral vectors. neu was over 200 times more potent than ras in inducing rat mammary carcinomas. Ovariectomy 2 days postinfection dramatically reduced the occurrence...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1992-08-01 00:00:00
abstract::p53 alterations in human tumors often involve missense mutations that may confer dominant-negative or gain-of-function properties. Dominant-negative effects result in inactivation of wild-type p53 protein in heterozygous mutant cells and as such in a p53 null phenotype. Gain-of-function effects can directly promote tu...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-06-4681
更新日期:2007-05-15 00:00:00
abstract::Cancer is a major health concern and a leading cause of mortality. The reliable identification of carcinogens and understanding of carcinogenicity has become a main focus of biomedical research and regulatory toxicology. While biomedical research applies cellular in vitro methods to uncover the underlying mechanisms c...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-19-2822
更新日期:2020-04-15 00:00:00
abstract::The FGFR1 gene transcript is alternatively processed to produce functionally different receptor forms. Previously, we identified a 69-nucleotide exonic splicing enhancer (ESE) required for alpha-exon inclusion in JEG3 cells. In the present study, we found that this sequence is composed of three independent elements, t...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-04-0716
更新日期:2004-12-15 00:00:00
abstract::CUB domain-containing protein 1 (CDCP1) is a membrane protein that is highly expressed in several solid cancers. We reported previously that CDCP1 regulates anoikis resistance as well as cancer cell migration and invasion, although the underlying mechanisms have not been elucidated. In this study, we found that expres...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-10-0220
更新日期:2010-06-15 00:00:00
abstract::One set of genes sufficient for transformation of primary human cells uses the combination of Ha-Ras-V12, the telomerase catalytic subunit hTERT, SV40 large tumor antigen (LT), and SV40 small tumor antigen (ST). Whereas SV40 LT inactivates the retinoblastoma protein and p53, the contribution of ST is poorly understood...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-04-1150
更新日期:2004-10-01 00:00:00
abstract::The renal handling of cis-diamminedichloroplatinum (CP) was investigated by measuring the renal clearance of creatinine, inulin, and free platinum in ten cancer patients. Free platinum clearances exceeded the glomerular filtration rate in all time periods. For example, at 1 to 2 hr, the mean clearance of free platinum...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1984-08-01 00:00:00
abstract::This report describes the development and validation of quantitative microsatellite analysis (QuMA) for rapid measurement of relative DNA sequence copy number. In QuMA, the copy number of a test locus relative to a pooled reference is assessed using quantitative, real-time PCR amplification of loci carrying simple seq...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:2000-10-01 00:00:00
abstract::The metabolism and disposition of LY186641, a diarylsulfonylurea with antineoplastic activity identified in preclinical tests, was determined in 21 patients who received 23 courses of orally administered drug. A linear correlation was found between the dose of drug administered and LY186641 peak plasma concentrations ...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1990-07-01 00:00:00
abstract::Despite its potential role as a tumor suppressor, p27 gene, a member of the Cip/Kip family of cyclin-dependent kinase inhibitor genes, has never been found mutated in human tumors. We investigated p27 protein expression in a series of 108 non-small cell lung cancers (57.4% stage 1, 16.7% stage 2, and 25.9% stage 3) to...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1997-08-15 00:00:00
abstract::The major heat shock protein Hsp72 is constitutively expressed in many tumor cell lines and biopsies, and its expression correlates with poor prognosis in several types of cancer. Hsp72 was suggested to play an important role in neoplastic transformation and tumor development. We addressed the role of Hsp72 in cancer ...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-06-3796
更新日期:2007-03-01 00:00:00
abstract::During the development of neoplasia, epithelial tissues undergo biochemical and structural changes that can manifest in tissue fluorescence. There have been several reports on different in vivo fluorescence characteristics between normal and precancerous (dysplastic) tissues. However, it has been difficult to identify...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:2002-02-01 00:00:00
abstract::Both gastrin and Helicobacter pylori have been shown capable of up-regulating gene expression and protein shedding of heparin-binding epidermal growth factor (HB-EGF). Furthermore, the bacteria have previously been shown to induce serum hypergastrinemia in infected individuals. The aim of this work was to assess the e...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-05-3246
更新日期:2006-08-01 00:00:00
abstract::A complementary DNA (cDNA) clone (B4) encoding the catalytic subunit of a cAMP-dependent protein kinase (PKAc) was isolated from a lambda gt10 rat brain cDNA library, using a synthetic oligonucleotide probe whose sequence was based on the known amino acid sequence of a bovine cardiac PKAc. Sequence analysis of this cl...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1990-03-15 00:00:00
abstract::Identification and reversal of treatment resistance mechanisms of clinically refractory tumor cells is critical for successful cancer therapy. Here we show that ATP-binding cassette member B5 (ABCB5) identifies therapy-refractory tumor cells in colorectal cancer patients following fluorouracil (5-FU)-based chemoradiat...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-11-0221
更新日期:2011-08-01 00:00:00
abstract::Anaplastic large cell lymphomas (ALCL) are mainly characterized by the reciprocal translocation t(2;5)(p23;q35) that involves the anaplastic lymphoma kinase (ALK) gene and generates the fusion protein NPM-ALK with intrinsic tyrosine kinase activity. NPM-ALK triggers several signaling cascades, leading to increased cel...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-06-4350
更新日期:2007-05-01 00:00:00
abstract::Based on reports that both human and murine lymphoblastoid cell lines can effect lysis in antibody-dependent (ADCC) and mitogen-induced (MICC) cell-mediated cytotoxicity, 10 human lymphoblastoid cell lines were investigated for their ability to act as effector cells in these lytic reactions. Four cell lines promoted M...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1978-11-01 00:00:00
abstract::To examine genetic instability during carcinogenesis, we screened 171 carcinomas of the breast, liver, proximal colon, stomach, pancreas, uterine cervix, and ovary for replication error at four microsatellite marker loci on chromosome 2, 3, and 17. A significantly high incidence of genetic instability was observed in ...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1993-11-01 00:00:00
abstract::Tumor necrosis factor-like weak inducer of apoptosis (TWEAK) is a member of the tumor necrosis factor superfamily of structurally related cytokines. TWEAK acts on responsive cells via binding to a cell surface receptor named Fn14. Recent studies have demonstrated that TWEAK can stimulate numerous cellular responses in...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-04-1879
更新日期:2004-12-15 00:00:00
abstract::Successful treatment of many patients with osteosarcoma requires more effective chemotherapy. Since new agents are needed, we have developed an immunotoxin using TP-3, an IgG2b mAb which recognizes human and canine osteosarcomas and budding capillaries of tumors. The plant hemitoxin, pokeweed antiviral protein (PAP), ...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1995-03-15 00:00:00
abstract::There is a paucity of data on whether or not women can be reinfected with human papillomavirus (HPV) types to which they were exposed to earlier in life and on the role of natural immunity. The observation of HPV infection at older ages may be explained by the reactivation of a latent infection or new exposure from se...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-10-0621
更新日期:2010-11-01 00:00:00
abstract::A new member of the proprotein convertase gene family (LPC) has been identified at a chromosome translocation breakpoint occurring in a high grade lymphoma. The translocation t(11;14)(q23;q32) has been molecularly cloned and shown to be the result of a fusion between an intron in the 3' -untranslated region of LPC wit...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1996-02-01 00:00:00
abstract::A previous study demonstrated inhibition of growth of primary rat mammary carcinomas after infusion of tumor-bearer plasma absorbed against Sepharose derivatives. In this report we have quantitated changes in individual complement components that occur during absorption of rat plasma with Sepharose derivatives and def...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1985-09-01 00:00:00
abstract::Many but not all of the cell surface antigens studied were released into tissue culture medium of human colorectal carcinoma and melanoma cells maintained in vitro. Two groups of monoclonal antibody-defined antigens are described. One group is composed of molecules that are released easily and in large quantitites int...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1981-07-01 00:00:00
abstract::Addition of the tumor promoter of 12-O-tetradecanoylphorbol-13-acetate (TPA) to C3H/10T1/2 cells after exposure to either X-rays or to fission-spectrum neutrons increases significantly the frequency of transformation without any effect on cell survival. However, treatment of unirradiated cells with 0.1 micrograms of T...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1982-02-01 00:00:00