Abstract：
:Meningiomas are common, mostly benign, tumours arising from leptomeningeal cells of the meninges, which frequently contain mutations in the neurofibromatosis type 2 (NF2) gene. In this study, we analysed a protein product of the neurofibromatosis type 1 (NF1) gene, neurofibromin, in human established leptomeningeal cells LTAg2B, in 17 sporadic meningiomas and in a meningioma from a patient affected by NF2. The expression level of neurofibromin was determined by immunoblotting and immunoprecipitation with anti-neurofibromin antibodies. The functional status of neurofibromin was analysed through its ability to stimulate the intrinsic GTPase activity of p21 ras. In the cytosolic extracts of four sporadic meningiomas and in the NF2-related meningioma, the expression level and the GTPase stimulatory activity of neurofibromin were drastically reduced compared with the level present in the human brain, human established leptomeningeal cells LTAg2B and the remaining 13 meningiomas. Our results suggest that neurofibromin is expressed in leptomeningeal cells LTAg2B and in most meningiomas, i.e. tumours derived from these cells. The reduced expression and GTPase stimulatory activity of neurofibromin was found in about 23% of meningiomas and in the single NF2-related meningioma analysed. These results suggest that decreased levels of neurofibromin in these tumours may contribute to their tumorigenesis.
journal_name
Br J Cancerjournal_title
British journal of cancerauthors
Sundaram V,Lee JH,Harwalkar JA,Stein DJ,Roudebush M,Stacey DW,Golubic Mdoi
10.1038/bjc.1997.456subject
Has Abstractpub_date
1997-01-01 00:00:00pages
747-56issue
6eissn
0007-0920issn
1532-1827journal_volume
76pub_type
杂志文章abstract：BACKGROUND:Epithelial-to-mesenchymal transition (EMT) is associated with decreased adhesion and acquisition of metastatic potential of breast cancer cells. Epithelial-to-mesenchymal transition is mediated, in part, by two transcription repressors, Snail and Slug, that are known to be targets of the Notch signaling path...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6605486
更新日期：2010-01-19 00:00:00
abstract：:Raltitrexed, a thymidylate synthase inhibitor, was given to 21 patients with advanced small-cell lung cancer, at a dose of 3 mg m(-2) as a 15-min intravenous infusion at 21-day intervals. All of the patients had extensive disease and 17 had received prior therapy. Patients with disease refractory to primary chemothera...
journal_title：British journal of cancer
pub_type： 临床试验,杂志文章
doi：10.1038/bjc.1997.373
更新日期：1997-01-01 00:00:00
abstract：:A score based on the combination of the systemic inflammatory response and albumin hazards ratio (HR) 1.70, 95% CI 1.23 - 2.35, P=0.001) was comparable in prognostic value to that based on stage and performance status (HR 1.48, 95% CI 1.12 - 1.95, P=0.006) in patients with inoperable non-small-cell lung cancer. The fo...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6601242
更新日期：2003-09-15 00:00:00
abstract：:A study was conducted on the effects of 12-O-tetradecanoyl-phorbol-13-acetate (TPA) on peroxisomal enzyme activities in mouse embryo fibroblasts C3H/10T1/2 C18 cells and chemically transformed C3H/10T1/2 MCA16 cells. TPA is a potent tumour promoter and treatment with this compound of the two cell lines induced peroxis...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1986.17
更新日期：1986-01-01 00:00:00
abstract：BACKGROUND:Bortezomib is a proteasome inhibitor with minimal clinical activity as a monotherapy in solid tumours, but its combination with other targeted therapies is being actively investigated as a way to increase its anticarcinogenic properties. Here, we evaluate the therapeutic potential of co-treatment with bortez...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.2011.546
更新日期：2012-01-17 00:00:00
abstract：:Smoke condensate from two types of cigarette, dissolved in two solvents, has been applied regularly to the backs of mice at each of seven different dose levels. Treatment was continued 3 times weekly for up to 110 weeks, by which time 509 of the 1428 treated mice had developed skin tumours. The dependence of tumour in...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1974.126
更新日期：1974-08-01 00:00:00
abstract：:A screening programme designed to identify cases of Major Depressive Disorder (MDD) in patients attending a Regional Cancer Centre outpatient department was established. It comprised two stages: (1) The Hospital Anxiety and Depression Scale (HADS) self-rating questionnaire administered by a touch-screen computer; (2) ...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6601578
更新日期：2004-01-26 00:00:00
abstract：:In this study we sought factors that determine the survival of human colonic epithelial cells. Normal colonic epithelial cells are dependent on cell-cell contacts and survival factors for the inhibition of apoptosis whereas, during colorectal tumorigenesis, cells develop mechanisms to evade these controls. The ability...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1997.167
更新日期：1997-01-01 00:00:00
abstract：:Multiple primary tumours occurring in a three-year population-based series of patients with histopathologically peer-reviewed sarcomas from North West England were ascertained in order to look at the patterns of neoplasms seen. A total of 30 out of the 310 patients entered in the study had additional primary tumours. ...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1993.512
更新日期：1993-12-01 00:00:00
abstract：:The natural history of 45 cases of smouldering leukaemia has been studied. Males and females were equally represented, with a median age of 60.5. The median survival of the whole group was only 20 months, but rare cases lived 10 years or longer. 38% developed acute leukaemia; the remainder usually died of the results ...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1982.179
更新日期：1982-08-01 00:00:00
abstract：METHODS:Maternally reported congenital abnormalities (CAs) were examined in a case-control study of 278 cases of paediatric germ cell tumours (GCTs) and 423 controls. RESULTS AND CONCLUSIONS:Germ cell tumours were significantly associated with cryptorchidism in males (OR=10.8, 95% CI: 2.1-55.1), but not with any other...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6605169
更新日期：2009-08-04 00:00:00
abstract：BACKGROUND:Hepatocellular carcinoma (HCC) is the third leading cause of cancer deaths worldwide. We tested megestrol acetate (MA) against placebo in the treatment of advanced HCC. METHODS:From 2002 through 2007, this randomised double-blind trial enrolled 204 patients with treatment-naive advanced HCC (Eastern Coopera...
journal_title：British journal of cancer
pub_type： 杂志文章,随机对照试验
doi：10.1038/bjc.2011.333
更新日期：2011-09-27 00:00:00
abstract：BACKGROUND:To prospectively examine the association between diabetes and risk of prostate cancer defined by clinical and molecular features. METHODS:A total of 49,392 men from the Health Professionals Follow-up Study (HPFS) were followed from 1986 to 2014. Data on self-reported diabetes were collected at baseline and ...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/s41416-020-0910-y
更新日期：2020-08-01 00:00:00
abstract：BACKGROUND:The risk and prognosis of ovarian cancer have not been well established in women with endometriosis. Thus, we investigated the impact of endometriosis on the risk and prognosis for ovarian cancer, and evaluated clinicopathologic characteristics of endometriosis-associated ovarian cancer (EAOC) in comparison ...
journal_title：British journal of cancer
pub_type： 杂志文章,meta分析
doi：10.1038/bjc.2014.29
更新日期：2014-04-02 00:00:00
abstract：:Gain of 1q is one of the most common alterations in cancer and has been associated with adverse clinical behaviour in ependymoma. The aim of this study was to investigate this region to gain insight into the role of 1q genes in intracranial paediatric ependymoma. To address this issue we generated profiles of eleven e...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6604651
更新日期：2008-10-07 00:00:00
abstract：BACKGROUND:Most lung cancer patients are diagnosed at an advanced disease stage and predominantly receive palliative treatment, which increasingly consists of several chemotherapy lines. We report on patients' quality of life (QOL) to gain knowledge on QOL during and across multiple lines of chemotherapy. This includes...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.2013.585
更新日期：2013-10-29 00:00:00
abstract：:As regulators of malignant cell behaviour and communication with stroma, cytokines have proved useful in understanding cancer biology and developing novel therapies. In renal cell carcinoma, patients with inflammatory reactions are known to have poor prognosis. In order to elucidate the relation between renal cell car...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6600257
更新日期：2002-05-06 00:00:00
abstract：BACKGROUND:BRCAness is defined as shared tumour characteristics between sporadic and BRCA-mutated cancers. However, how to exactly measure BRCAness and its frequency in breast cancer is not known. Assays to establish BRCAness would be extremely valuable for the clinical management of these tumours. We assessed BRCAness...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.2013.144
更新日期：2013-05-28 00:00:00
abstract：:Germline mutations in genes encoding proteins involved in DNA mismatch repair are responsible for the autosomal dominantly inherited cancer predisposition syndrome hereditary nonpolyposis colorectal cancer (HNPCC). We describe here analysis of hMLH1 and hMSH2 in nine Greek families referred to our centre for HNPCC. A ...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6602260
更新日期：2005-01-31 00:00:00
abstract：:Three hundred and nineteen patients with primary adenocarcinoma of the ovary were studied to define those factors, many of them histopathological, which influence survival. The paper considers the stage of spread at the time of operation, the histological type of the tumour, its grade and in particular its mitotic act...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1971.30
更新日期：1971-06-01 00:00:00
abstract：:The association between Ki-ras mutations and proliferation activity was investigated in a comprehensive series of biliary tract carcinomas (BTCs). We precisely microdissected samples of tissue from paraffin-embedded sections of 77 BTCs including 22 intrahepatic cholangiocarcinomas (ICCs), 36 extrahepatic cholangiocarc...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1996.459
更新日期：1996-09-01 00:00:00
abstract：BACKGROUND:Although inequalities in cancer survival are thought to reflect inequalities in stage at diagnosis, little evidence exists about the size of potential survival gains from eliminating inequalities in stage at diagnosis. METHODS:We used data on patients diagnosed with malignant melanoma in the East of England...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.2015.50
更新日期：2015-03-31 00:00:00
abstract：:Experiments were conducted to determine whether bladder cancer would develop in primates (Papio sp.) infected with S. haematobium and concurrently exposed to low initiating doses of the bladder carcinogen N-butyl-N-(4-hydroxybutyl)nitrosamine (BBN). To control for the systemic effects of schistosomiasis, 5 baboons wer...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1980.308
更新日期：1980-11-01 00:00:00
abstract：:We have purified epithelial cells from human colonic tumours by velocity sedimentation in an isokinetic density gradient of Ficoll in tissue culture medium. In frozen sections of colonic carcinoma, histochemically demonstrable N-acetyl-beta-D-glucosaminidase (HDAG) was observed primarily in epithelial cells. We used t...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1977.128
更新日期：1977-06-01 00:00:00
abstract：:Geographical correlations between standardized, mortality ratios (SMRs) of cancers and consumption of different types of alcoholic beverages (saké synthetic saké, shochu, beer, wine, and whisky), of cigarettes, and urbanization were examined for all 46 prefectures in Japan. Suggestive correlations were observed betwee...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1979.200
更新日期：1979-09-01 00:00:00
abstract：:Data from the Oxford Survey have shown that childhood cancers are causes of in utero deaths which affect leukaemias more than solid tumours and difficult deliveries more than easy ones. As a result of these biases singletons give the impression of being more leukaemia-sensitive than twins. This is a false impression w...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1973.59
更新日期：1973-06-01 00:00:00
abstract：:Studies in animal tumour models of colorectal cancer suggest that F(ab')2 antibody fragments to carcinoembryonic antigen (CEA) labelled with iodine-131 give superior therapy compared with intact anti-CEA antibody. The purpose of this study was to investigate this hypothesis in patients. Ten patients received intact A5...
journal_title：British journal of cancer
pub_type： 临床试验,杂志文章
doi：10.1038/bjc.1994.338
更新日期：1994-09-01 00:00:00
abstract：:Apurinic/apyrimidinic (AP) sites in DNA are potentially lethal and mutagenic. They can arise spontaneously or following DNA damage from reactive oxygen species or alkylating agents, and they constitute a significant product of DNA damage following cellular exposure to ionizing radiation. The major AP endonuclease resp...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6690447
更新日期：1999-06-01 00:00:00
abstract：BACKGROUND:Activated anaplastic lymphoma kinase (ALK) gene fusions are recurrent events in a small fraction of colorectal cancers (CRCs), although these events have not yet been exploited as in other malignancies. METHODS:We detected ALK protein expression by immunohistochemistry and gene rearrangements by fluorescenc...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.2015.401
更新日期：2015-12-22 00:00:00
abstract：:Using a panel of ten polymorphic markers, we examined the frequency of loss of heterozygosity (LOH) on chromosome 17 in 55 sporadic ovarian tumours. LOH on 17p and 17q was observed to be 50% and 62% respectively. LOH at D17S5 was detected in 24/36 (67%) of malignant cases and in 19/43 (44%) at TP53; the marker D17S855...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1996.594
更新日期：1996-11-01 00:00:00
