Abstract:
:The prostate cancer cell lines PC3 and LNCaP have been shown to lack expression of the tumour suppressor gene MMAC1/PTEN, in contrast to the immortalized non-tumorigenic epithelial lines PNT1a and PNT2. We have measured the effects of reintroduction of wild type (wt) and mutant MMAC1 genes on to these genetic backgrounds, using gene constructs expressing either wt MMAC1 or various mutants deficient in the dual specificity phosphatase domain of the protein. Over-expression of wild type PTEN protein induced cell shrinkage and rounding, but did not result in increased levels of classical apoptosis. Permanently transfected lines containing the MMAC1 gene could only be obtained from the PNT cells, as PTEN expression resulted in rapid loss of both tumour lines. In contrast, mutation of the phosphatase domain resulted in partial attenuation of the phenotypic effects of MMAC1 after transient transfection, and also allowed the derivation of permanent tumour cell lines containing the mutated MMAC1 gene. The results suggest that re-expression of wt PTEN is incompatible with survival of human prostate cancer cells in vitro, and that the full biological activity of this common tumour suppressor requires functions additional to the established protein and lipid phosphatase activities in epithelial systems.
journal_name
Br J Cancerjournal_title
British journal of cancerauthors
Sharrard RM,Maitland NJdoi
10.1054/bjoc.2000.1400subject
Has Abstractpub_date
2000-10-01 00:00:00pages
1102-9issue
8eissn
0007-0920issn
1532-1827pii
S0007092000914009journal_volume
83pub_type
杂志文章abstract::The bioreductive antitumour agent, mitomycin C (MMC), requires activation by reductive enzymes like NAD(P)H:quinone oxidoreductase 1 (NQO1). We used a novel approach to increase MMC efficacy by selectively inducing NQO1 in tumour cells in vivo. CD-1 nude mice were implanted with HCT116 cells, and fed control diet or d...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/sj.bjc.6602171
更新日期:2004-10-18 00:00:00
abstract::Dihydropyrimidine dehydrogenase (DPD) is the initial and rate-limiting enzyme of 5-fluorouracil (5-FU) catabolism. We report lymphocytic DPD data concerning a group of 53 patients (23 men, 30 women, mean age 58, range 36-73), treated by 5-FU-based chemotherapy in different French institutions and who developed unantic...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/sj.bjc.6690098
更新日期:1999-02-01 00:00:00
abstract::We followed 353 women referred with abnormal cervical cytology in a non-intervention cohort study. In 91 pregnant women we compared high-risk human papilloma virus rates in the subsequent trimesters and postpartum in comparison to 262 non-pregnant women. High-risk human papilloma virus clearance was compared with 179 ...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/sj.bjc.6600367
更新日期:2002-07-01 00:00:00
abstract::The diagnosis and follow-up of patients with bladder cancer rely on invasive procedures (cystoscopy with biopsy). Polymerase chain reaction (PCR)-based technologies may allow the sensitive detection of cancer-related genetic mutations in exfoliated tumour material, potentially allowing the development of less invasive...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1054/bjoc.1999.0890
更新日期:2000-01-01 00:00:00
abstract::In a study involving 50 breast cancer tumours, we compared two oestrogen receptor (ER) detection methods developed by us--a microplate immunoenzymometric assay (EIA96) and an immunohistochemistry kit (HistoCIS-ER)--with the radioligand assay (RLA), the Abbott immunoenzymometric assay ER-EIA and the reverse transcripta...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.1997.418
更新日期:1997-01-01 00:00:00
abstract::We examined the relationship between p53 levels before and after irradiation, radiation-induced cell cycle delays, apoptotic cell death and radiosensitivity in a panel of eight human tumour cell lines. The cell lines differed widely in their clonogenic survival after radiation, (surviving fraction at 2 Gy: SF2=0.18-0....
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.1996.101
更新日期:1996-03-01 00:00:00
abstract:BACKGROUND:Though p53 mutations are rare in ES, there is a strong indication that p53 mutant tumours form a particularly bad prognostic group. As such, novel treatment strategies are warranted that would specifically target and eradicate tumour cells containing mutant p53 in this subset of ES patients. METHODS:PRIMA-1...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.2013.635
更新日期:2013-11-12 00:00:00
abstract::To investigate the usefulness of thyroglobulin mRNA (Tg-mRNA) detection in peripheral blood in the follow-up of papillary and follicular (differentiated) thyroid cancer, a literature study was performed. Both evidence for and evidence against the usefulness of Tg-mRNA detection were found. Also, evidence for the expre...
journal_title:British journal of cancer
pub_type: 杂志文章,评审
doi:10.1038/sj.bjc.6601991
更新日期:2004-07-19 00:00:00
abstract::A prospective randomised study was carried out to compare the effect of mesna (2-mercaptoethane sulphonate sodium) with that of forced diuresis in preventing cyclophosphamide induced haemorrhagic cystitis in marrow transplant recipients. Sixty-one consecutive BMT recipients were randomised for treatment with forced di...
journal_title:British journal of cancer
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1038/bjc.1984.252
更新日期:1984-12-01 00:00:00
abstract::We have studied whether N-methylformamide can affect the expression pattern of adhesion molecules and the attachment behaviour of M14 human melanoma cells. The role of N-methylformamide on experimental and spontaneous pulmonary metastases from M14 cells in nude mice was also investigated. We demonstrate that N-methylf...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.1998.35
更新日期:1998-01-01 00:00:00
abstract::Chemotherapy has been regarded as standard therapy for the majority of women with advanced epithelial ovarian cancer for several decades, with this role filled largely by the alkylating agents - used as monotherapy - until the mid-1980s. The activity of cisplatin in this disorder was established during the 1970s, and ...
journal_title:British journal of cancer
pub_type: 历史文章,杂志文章,评审
doi:10.1038/sj.bjc.6601494
更新日期:2003-12-01 00:00:00
abstract::C57BL mice were given local irradiation to 2 cm2 of the lower abdomen in the dose range 16--24 Gy. There were some early deaths, but mice dying between 50--240 days predominantly developed invasive adenocarcinomas of the intestine. When the radiosensitizer misonidazole was given in a single dose shortly before irradia...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.1978.240
更新日期:1978-10-01 00:00:00
abstract::Studies of underground miners occupationally exposed to radon have consistently demonstrated an increased risk of lung cancer in both smokers and non-smokers. Radon exposure also occurs elsewhere, especially in houses, and estimates based on the findings for miners suggest that residential radon is responsible for abo...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.1998.506
更新日期:1998-08-01 00:00:00
abstract:BACKGROUND:It has been reported that although young patients present with more advanced disease, when adjusted for stage, cancer-specific survival is not different after surgery for colorectal cancer. However, few studies have examined non-cancer survival in young patients and 10-year survival has rarely been reported....
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/sj.bjc.6605222
更新日期:2009-08-18 00:00:00
abstract:BACKGROUND:Anti-EGFR antibody, cetuximab, improves overall survival (OS) in K-ras wild-type chemotherapy-refractory colorectal cancer. Epidermal growth factor receptor ligand epiregulin (EREG) gene expression may further predict cetuximab benefit. METHODS:Tumour samples from a phase III clinical trial of cetuximab plu...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.2013.753
更新日期:2014-02-04 00:00:00
abstract::In a cohort of 29,584 residents of Linxian, China, followed from 1985 to 2001, we conducted a case-cohort study of the magnitude of the association of Helicobacter pylori seropositivity with cancer risk in a random sample of 300 oesophageal squamous cell carcinomas, 600 gastric cardia adenocarcinomas, all 363 diagnose...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/sj.bjc.6603517
更新日期:2007-01-15 00:00:00
abstract::A number of rare human inherited syndromes are associated with apparent defects in DNA repair and a greatly increased frequency of cancer. Cell lines derived from such individuals phenotypically resemble certain bacterial mutant strains that have increased sensitivity to radiation or chemical agents and well character...
journal_title:British journal of cancer
pub_type: 杂志文章,评审
doi:10.1038/bjc.1987.163
更新日期:1987-08-01 00:00:00
abstract::Use of aspirin or other non-steroidal anti-inflammatory drugs (NSAIDs) may reduce the risk of gastric or oesophageal adenocarcinomas. We examined the association between self-reported use of aspirin or non-aspirin NSAIDs in the earlier 12 months and gastric non-cardia (N=182), gastric cardia (N=178), and oesophageal a...
journal_title:British journal of cancer
pub_type: 杂志文章,meta分析
doi:10.1038/sj.bjc.6604880
更新日期:2009-02-10 00:00:00
abstract::The presence of succinyl-coenzyme A: acetoacetate CoA--transferase (3-oxo acid-CoA transferase), an initiator of ketone body utilization in non-hepatic tissue was examined in a number of animal and human tumours of peripheral tissues. While enzyme levels in heart, kidney, lymphocytes and bladder were high, the tumours...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.1983.38
更新日期:1983-02-01 00:00:00
abstract:BACKGROUND:Interferon (IFN)-based therapies could eradicate hepatitis C (HCV) and reduce the risk of hepatocellular carcinoma (HCC). However, HCC could still happen after sustained virological response (SVR). We aimed to develop a simple scoring system to predict the risk of HCC development among HCV patients after ant...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.2013.564
更新日期:2013-10-29 00:00:00
abstract::We investigated the feasibility and the anti-tumour activity of weekly cisplatin and the simultaneous application of local hyperthermia in patients with a pelvic recurrence of cervical cancer in previously irradiated area. Dose levels of cisplatin 60 mg m(-2), 70 mg m(-2) and 80 mg m(-2) were studied. Treatment object...
journal_title:British journal of cancer
pub_type: 临床试验,杂志文章
doi:10.1038/sj.bjc.6690533
更新日期:1999-07-01 00:00:00
abstract::The cisplatin analogue 1R,2R-diaminocyclohexane(trans-diacetato)(dichloro)platinum(IV) (DAP) is a DNA-damaging agent that will be entering clinical trials for its potent cytotoxic effects against cisplatin-resistant tumour cells. This cytotoxicity may reside in its ability to selectively activate G1-phase checkpoint r...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/sj.bjc.6603448
更新日期:2006-12-04 00:00:00
abstract::Hybrid Capture II (HC-II) is a commercial human papillomavirus (HPV) detection test designed to detect 18 HPV types divided into high-risk and low-risk groups. We have tested 1647 scrapes from 1518 unselected women attending routine cytological screening by this assay for the detection of histologically proven high-gr...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/sj.bjc.6690523
更新日期:1999-07-01 00:00:00
abstract::It has been suggested that tamoxifen may improve the efficacy of medical castration with luteinising hormone-releasing hormone analogues, but very few data have so far been published concerning the clinical and endocrinological activity of this therapeutic modality. In this phase II multicentre trial conducted by the ...
journal_title:British journal of cancer
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1038/bjc.1995.215
更新日期:1995-05-01 00:00:00
abstract::The metabolism of serotonin was studied in cancer patients of their first day of their first course of chemotherapeutic drugs either with strongly or moderately emetogenic regimens. It was observed that strongly emetogenic treatments induce greater increases in serotonin release than moderately emetogenic regimens. Hi...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.1992.242
更新日期:1992-07-01 00:00:00
abstract:BACKGROUND:This phase I, dose-finding study determined the safety, maximum tolerated dose (MTD)/recommended phase 2 dose (RP2D), pharmacokinetics, and antitumour activity of PX-866, a phosphatidylinositol 3-kinase inhibitor, combined with docetaxel in patients with incurable solid tumours. METHODS:PX-866 was administe...
journal_title:British journal of cancer
pub_type: 杂志文章,多中心研究
doi:10.1038/bjc.2013.474
更新日期:2013-09-03 00:00:00
abstract::Benzoporphyrin derivative monoacid ring A (BPD-MA, verteporfin) is currently under investigation as a photosensitizer for photodynamic therapy (PDT). Since BPD exhibits rapid pharmacokinetics in plasma and tissues, we assessed damage to tumour and muscle microvasculature when light treatment for PDT was given at short...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/sj.bjc.6690271
更新日期:1999-04-01 00:00:00
abstract::The predictive value of KRAS mutation in metastatic colorectal cancer (MCRC) patients treated with cetuximab plus chemotherapy has recently been suggested. In our study, 59 patients with a chemotherapy-refractory MCRC treated with cetuximab plus chemotherapy were included and clinical response was evaluated according ...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/sj.bjc.6603685
更新日期:2007-04-23 00:00:00
abstract::A retrospective case-control study of 200 patients with head and neck cancer, and 200 controls matched for age and sex, confirmed the importance of tobacco and alcohol consumption in the aetiology of malignant tumours of the upper gastrointestinal and upper respiratory tracts. A male-female ratio of 3:1 was found, and...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.1981.26
更新日期:1981-02-01 00:00:00
abstract::To investigate whether lung cancer clusters in families in a high incidence county of China, an analysis was conducted using data on domestic fuel history and tobacco use for family members of 740 deceased lung cancer probands and 740 controls (probands' spouses). Lung cancer prevalence was compared among first-degree...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/sj.bjc.6602465
更新日期:2005-04-11 00:00:00