Abstract:
:We examined the effects of acivicin, a specific inhibitor of the ectoenzyme gamma-glutamyltransferase (gamma-GT), on gamma-GT activity and apoptosis in 2 human T-lymphoblastoid CEM cell lines, CCRF and VBL-100. In both cell lines, acivicin was found to cause morphological and biochemical changes of apoptosis in a dose-dependent manner. There was a close correlation between inhibition of gamma-GT activity and the emergence of apoptotic cells. However, VBL-100 cells had a 50% higher gamma-GT basal activity than CCRF-CEM cells, their enzyme activity was more inhibited, and, they had a greater apoptotic response to acivicin. The gamma-GT-specific activity in apoptotic/dead cells was also almost totally inhibited, while that of cells that remained alive after 5 days of acivicin treatment was not. These findings confirm that gamma-GT is implicated in the process of apoptosis of CEM cells.
journal_name
Int J Cancerjournal_title
International journal of cancerauthors
Graber R,Losa GAdoi
10.1002/ijc.2910620414subject
Has Abstractpub_date
1995-08-09 00:00:00pages
443-8issue
4eissn
0020-7136issn
1097-0215journal_volume
62pub_type
杂志文章abstract::Evidence has accumulated that, in addition to the MDR1 gene-coded P-glycoprotein (Pgp), multidrug resistance-associated protein (MRP) also mediates the multidrug resistance (MDR) of various human tumors. In the case of gastric cancer, there is little or no involvement of P-glycoprotein, and the mechanisms of MDR remai...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/(SICI)1097-0215(19961104)68:3<372::AID-IJC
更新日期:1996-11-04 00:00:00
abstract::An inverse association between smoking and endometrial cancer has generally been observed, primarily among current smokers. To assess this association, we analyzed data from the prospective Nurses' Health Study. From 1976 to 2000, 702 cases of invasive endometrial cancer were identified during 1.8 million person-years...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.20821
更新日期:2005-05-10 00:00:00
abstract::Secreted frizzled-related proteins (SFRPs) are antagonists of the Wnt signaling pathway whose epigenetic downregulation have been shown to be involved in hepatocarcinogenesis. However, dysregulation of SFRPs induced by hepatitis B virus (HBV) X protein (HBx) has never been studied in HBV-related hepatocellular carcino...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.28697
更新日期:2014-08-01 00:00:00
abstract::We have examined several types of tumor cell lines and shown that they invariably expressed little or no Egr-1, in contrast to their normal counterparts. We have previously shown that the expression of exogenous Egr-1 in human breast and other tumor cells markedly reduces transformed growth and tumorigenicity. We ther...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/(sici)1097-0215(19970703)72:1<102::aid-ijc
更新日期:1997-07-03 00:00:00
abstract::No clear relationship between whole grain products and risk of breast cancer has been established. In a large prospective cohort study, we investigated the association between intake of whole grain products and risk of breast cancer by tumour receptor status [oestrogen receptor (ER) and progesterone receptor (PR)] and...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.23992
更新日期:2009-02-01 00:00:00
abstract::Different treatment schedules have been investigated when evaluating the inhibitory effect of 9-(2-phosphonylmethoxyethyl)adenine (PMEA) and 3'-azido-2',3'-dideoxythymidine (AZT) on the replication of human immunodeficiency virus type I (HIV-I) in MT-4 cells, transformation of C3H/3T3 cells by Moloney murine sarcoma v...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.2910460233
更新日期:1990-08-15 00:00:00
abstract::Previous studies have revealed a robust association between exposure to asbestos and human lung cancer. Accumulating evidence has highlighted the role of epigenome deregulation in the mechanism of carcinogen-induced malignancies. We examined the impact of asbestos on DNA methylation. Our genome-wide studies (using Ill...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.30897
更新日期:2017-11-15 00:00:00
abstract::Intratumoural (i.t.) injection of radio-iododeoxyuridine (IdUrd), a thymidine (dThd) analogue, is envisaged for targeted Auger electron- or beta-radiation therapy of glioblastoma. Here, biodistribution of [(125)I]IdUrd was evaluated 5 hr after i.t. injection in subcutaneous human glioblastoma xenografts LN229 after di...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.20112
更新日期:2004-05-20 00:00:00
abstract::In a population-based case-control study of dietary risk factors for pancreatic cancer, a total of 179 cases and 239 controls were interviewed between 1984 and 1988. This study demonstrated an increased risk of pancreas cancer associated with high levels of reported energy intake. After adjustment for age, sex, respon...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.2910470102
更新日期:1991-01-02 00:00:00
abstract::A goal of oncology is to predict chemosensitivity of tumors. This approach assumes that in a patient all tumor deposits are homogeneous. We have tested the heterogeneity between several samples of the same liver metastasis (LM; intrametastatic heterogeneity) or between multiple LM (intermetastatic heterogeneity) from ...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.25114
更新日期:2010-09-01 00:00:00
abstract::Both retinoids and anti-estrogens inhibit breast cancer cell proliferation with accumulation of cells in the G1 phase of the cell cycle, but the effect of retinoids is delayed compared to that of anti-estrogens. To determine whether this temporal difference is due to a simple delay in the action of retinoids on a comm...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/(sici)1097-0215(19970127)70:3<291::aid-ijc
更新日期:1997-01-27 00:00:00
abstract::The interactions which occur between antigenic tumor cells and normal or immune lymphoid cells in a 3-day in vitro culture, have been studied with a murine sarcoma virus (MSV)-induced tumor. The 3H-thymidine incorporation of lymphoma cells growing in suspension, and the radioactive-chromium release of freshly sampled ...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.2910160609
更新日期:1975-12-15 00:00:00
abstract::A significant proportion of screen-detected men with prostate cancer is likely to be overtreated, especially in older age groups. We aim to find which groups of screen-detected older men (65+) benefit the most from Immediate Radical Treatment or Active Surveillance (AS) for prostate cancer, depending on age, screening...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.29976
更新日期:2016-05-15 00:00:00
abstract::Flavone acetic acid (FAA) is a potentially useful anti-tumour agent which has been reported to induce changes in tumour vasculature, in particular loss of bloodflow. This led us to examine whether endothelium could be a cellular target of FAA action, with resultant modulation of cell-surface coagulant properties leadi...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.2910490219
更新日期:1991-09-09 00:00:00
abstract::The incidence of tonsillar cancer and the proportion of human papillomavirus (HPV) positive tonsillar cancer cases have increased in the last decades. In parallel, treatment for tonsillar cancer has been intensified e.g., by accelerated radiotherapy, and chemotherapy, resulting in more side effects. Patients with HPV-...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.26490
更新日期:2012-09-01 00:00:00
abstract::A randomized clinical trial designed to compare the effectiveness of cytoxan (CTX) alone versus a combination consisting of CTX, vincristine (Oncovin) and methotrexate (COM) in the treatment of Burkitt's lymphoma (BL) was carried out. Nineteen patients were selected at random to receive CTX alone while 21 received COM...
journal_title:International journal of cancer
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1002/ijc.2910170404
更新日期:1976-04-15 00:00:00
abstract::Cancer vaccines directed against tumor associate antigen (TAA) have produced encouraging results in preclinical models but not in cancer patients. A major limitation of this strategy is the relative degree of tolerance to these antigens and the low and heterogeneous tumor cell expression of TAA and major histocompatib...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.10969
更新日期:2003-04-20 00:00:00
abstract::It has been debated whether the reported increased risk of Hodgkin's lymphoma (HL) after tonsillectomy could be due to some underlying factor rather than the surgery itself. We studied whether not only tonsillectomy but also tonsillitis was associated with HL. This nationwide cohort study included all Danish residents...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.24973
更新日期:2010-08-01 00:00:00
abstract::Cetuximab in combination with an irinotecan-containing regimen is a standard treatment in patients with KRAS wild-type (KRAS WT), metastatic colorectal cancer (mCRC). We investigated the addition of the oral MET inhibitor tivantinib to cetuximab + irinotecan (CETIRI) based on preclinical evidence that activation of th...
journal_title:International journal of cancer
pub_type: 杂志文章,随机对照试验
doi:10.1002/ijc.30049
更新日期:2016-07-01 00:00:00
abstract::Molecular genetic mechanisms involved in the progression of prostate cancer are not well understood due to extensive tumor heterogeneity and lack of suitable models. New methods such as fluorescence in-situ hybridization (FISH), comparative genomic hybridization (CGH) and microsatellite analysis have documented losses...
journal_title:International journal of cancer
pub_type: 杂志文章,评审
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更新日期:2003-01-20 00:00:00
abstract::Due to the generally poor prognosis of head and neck squamous cell carcinoma (HNSCC), treatment has been intensified, these last decades, leading to an increase of serious side effects. High-risk human papillomavirus (HR-HPV) infection has been recently etiologically linked to a subset of oropharyngeal squamous cell c...
journal_title:International journal of cancer
pub_type: 杂志文章,评审
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更新日期:2015-04-01 00:00:00
abstract::CD4(+) Th cells that are restricted by MHC class II molecules play an important role in the induction of antitumor immune responses. We have established a stable CD4(+) Th cell clone (Th35-1A) from the PBMCs of a patient with primary cutaneous melanoma. The Th cell clone is noncytolytic and proliferates specifically i...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.10964
更新日期:2003-04-10 00:00:00
abstract::Despite recent advances in targeted and immune-based therapies, advanced stage melanoma remains a clinical challenge with a poor prognosis. Understanding the genes and cellular processes that drive progression and metastasis is critical for identifying new therapeutic strategies. Here, we found that the GTPase RAB27A ...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.32064
更新日期:2019-06-15 00:00:00
abstract::Gefitinib has shown meaningful antitumor activity with tolerable toxicity in chemotherapy-refractory NSCLC in previous studies. Moreover, EGFR expression failed to show a correlation with response. In an attempt to identify predictive markers of response, we have investigated the tumoral expression of key signaling mo...
journal_title:International journal of cancer
pub_type: 临床试验,杂志文章
doi:10.1002/ijc.20550
更新日期:2005-01-01 00:00:00
abstract::The antigen-induced leukocyte adherence inhibition (LAI) test is an assay of cellular immune reactivity which was expected to offer a promising adjunct to currently available diagnostic and monitoring procedures in cancer patients. We have applied this assay to (1) 83 inpatients clinically suspected of having breast c...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.2910290306
更新日期:1982-03-15 00:00:00
abstract::Fatty acid ester surfactants, e.g., Cremophor EL and Solutol HS 15, that modulate multi-drug resistance (MDR) have been described; however, the drug potential of these preparations is unclear because of the molecular heterogeneity of these and other commercial surfactants. In previous experiments, an active but still ...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/(SICI)1097-0215(19960103)65:1<74::AID-IJC1
更新日期:1996-01-03 00:00:00
abstract::Conversion of solid sarcomas and carcinomas into ascites tumors depends on the in vivo selection of phenotypically altered tumor cell variants that can grow in the dissociated form. Once selected, they retain this property even after prolonged s.c. growth as solid tumors. From an s.c.-passaged subline of an ascites-co...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.2910450324
更新日期:1990-03-15 00:00:00
abstract::Fine-needle aspiration cytology (FNAC) is currently used in evaluating the nature of breast nodules. In the present study we have examined whether monoclonal antibodies (MAbs) to breast-tumor-associated antigens (BTAA) can be employed in FNAC for the diagnosis of breast cancer. For this purpose we have used 2 murine M...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.2910370404
更新日期:1986-04-15 00:00:00
abstract::The targeted radiotherapy of neuroblastoma with 131l-labelled metaiodobenzyl guanidine (mIBG) is now the subject of several clinical studies. The precise intracellular localization of mIBG, necessary for nuclear microdosimetry, has not previously been described. We report the use of electron-energy-loss spectroscopy a...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.2910470615
更新日期:1991-04-01 00:00:00
abstract::We recently reported that standardized quantitative immunohistochemical (IHC) assays allowed prediction of an adverse outcome among 572 node negative (N-) patients with breast carcinoma (BrCa). To further validate our prior findings, we repeated the IHC stains including a second series of BrCa diagnosed at Yale Univer...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.27371
更新日期:2012-08-01 00:00:00