Abstract:
:Human CYP2A6 has been recognized as being involved in the mutagenic activation of promutagens such as the tobacco-specific nitrosamine, 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK). Methoxsalen (8-methoxypsoralen) was reported to inhibit CYP2A6. In the present study, the inhibitory effects of methoxsalen on NNK-induced lung tumorigenesis in female A/J mice were examined. Female A/J mice were treated with methoxsalen at doses of 50 or 12.5 mg/kg body weight, given by stomach tube, daily for 3 days. One h after the final treatment, NNK was injected i.p. at a dose of 2 mg/mouse. The experiments were terminated 16 weeks after the first methoxsalen treatment, and lung adenomas were analyzed. Pretreatment of methoxsalen significantly reduced tumor incidence from 93.8% to 16.7% (50 mg/kg) and 20.0% (12.5 mg/kg), and tumor multiplicity from 5.97 to 0.23 (50 mg/kg) and 0.25 (12.5 mg/kg) tumors/mouse. These results clearly demonstrated that methoxsalen, a potent human CYP2A6 inhibitor, is a strong chemopreventive agent against NNK-induction of lung tumorigenesis.
journal_name
Cancer Resjournal_title
Cancer researchauthors
Takeuchi H,Saoo K,Yokohira M,Ikeda M,Maeta H,Miyazaki M,Yamazaki H,Kamataki T,Imaida Ksubject
Has Abstractpub_date
2003-11-15 00:00:00pages
7581-3issue
22eissn
0008-5472issn
1538-7445journal_volume
63pub_type
杂志文章相关文献
CANCER RESEARCH文献大全abstract::A detailed analysis of the gamma-glutamylation of methotrexate has been conducted in primary cultures of rat hepatic parenchymal cells in monolayer culture. The rates of glutamylation are concentration dependent and saturable when measured over a 6-h period at concentrations between 2 and 50 microM. The removal of fol...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1986-02-01 00:00:00
abstract::Cells obtained from N-nitrosomethylurea-induced rat mammary tumors were grown in vitro using the soft-agar clonogenic assay technique. Their growth was studied in regular media containing serum as well as in media lacking serum, but to which insulin was added. Deletion of serum from the media resulted in a mean decrea...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1984-12-01 00:00:00
abstract::Mismatch repair (MMR) deficiency was reported to increase resistance of mammalian cells to killing by several genotoxic substances. However, although MMR-deficient cells are approximately 100-fold more resistant to killing by S(N)1 type methylating agents than MMR-proficient controls, the sensitivity differences repor...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-04-0513
更新日期:2004-05-15 00:00:00
abstract::A transplanted rat lymphosarcoma (SGT-4), induced by Gross virus and inoculated s.c. into the foot of a normal syngeneic rat, initially grew but ultimately regressed. The tumor cells metastasized to the regional popliteal, lumbar, and inguinal lymph nodes and formed massive metastatic foci there. These lymph node meta...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1975-07-01 00:00:00
abstract::Effective autologous bone marrow transplantation for leukemia and lymphoma is likely to depend upon the selective removal in vitro of malignant cells from normal human bone marrow precursors. Highly specific cytotoxic conjugates formed by coupling ricin A chain to monoclonal antibodies might prove useful for the selec...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1986-03-01 00:00:00
abstract::Because chronic intestinal inflammation is a risk factor for colorectal cancer, we hypothesized that genetic variants of inflammatory mediators, such as mannose-binding lectin 2 (MBL2), are associated with colon cancer susceptibility. Here, we report the association of 24 MBL2 single-nucleotide polymorphisms (SNP) and...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-11-3073
更新日期:2012-03-15 00:00:00
abstract::Cyclin G1 was identified as a transcriptional target of p53 that encodes a protein with strong homology to the cyclin family of cell cycle regulators. We show that either ectopically expressed or endogenous cyclin G1 protein is very unstable, undergoes modification with ubiquitin, and is likely degraded by the proteas...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-07-6346
更新日期:2008-07-15 00:00:00
abstract::MCT-1 is an oncogene that was initially identified in a human T cell lymphoma and has been shown to induce cell proliferation as well as activate survival-related pathways. MCT-1 contains the PUA domain, a recently described RNA-binding domain that is found in several tRNA and rRNA modification enzymes. Here, we estab...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-06-1999
更新日期:2006-09-15 00:00:00
abstract::Gastrointestinal malignancy may spread to peritoneal surfaces in the absence of lymphatic or hematogenous metastases. To treat peritoneal carcinomatosis, a uniformly lethal disease process, extensive cytoreductive surgery and i.p. chemotherapy were combined. Early postoperative i.p. chemotherapy was instilled in the f...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1990-09-15 00:00:00
abstract::Unique patient-specific tumor antigens may constitute the dominant antigens in the antitumor immune response. Hence, vaccination with the patient's own repertoire of tumor antigens may offer a superior strategy to elicit protective immunity. We have shown previously that dendritic cells transfected with mRNA isolated ...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:2000-02-15 00:00:00
abstract::Normal human cells can be transformed to anchorage-independent growth by transfection with DNA from MOLT-4 lymphoblasts, derived from a patient with acute lymphocytic leukemia. Cells were treated with polyethylene glycol 6000, and DNA was administered as a calcium phosphate coprecipitate . The transforming activity of...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1984-07-01 00:00:00
abstract::A hormone-dependent subline of the transplantable rat mammary tumor MTW9 contains binding sites for both prolactin and estrogen. Prolactin binding is saturable (K-d similar to 2 times 10-9 M), hormone specific, and destroyed by proteases. By contrast, an autonomous subline derived from the same parent tumor has lost m...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1975-04-01 00:00:00
abstract::Variation in colorectal cancer rates between countries and within ethnic groups upon migration and/or Westernization suggests a role for some aspects of Western lifestyle in the etiology of this disease. We conducted a population-based case-control study in the multiethnic population of Hawaii to evaluate associations...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1997-11-01 00:00:00
abstract::A novel matrix-degrading enzyme was identified from human breast cancer cells. This enzyme appears as major gelatinase in hormone-dependent breast cancer cell lines and has as an apparent molecular mass of 80 kDa on gelatin zymography. The 80-kDa enzyme has a unique metal ion specificity. In addition to calcium ions, ...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1993-03-15 00:00:00
abstract::Tubulysins are highly toxic tubulin-targeting agents with a narrow therapeutic window that are interesting for application in antibody-drug conjugates (ADC). For full control over drug-antibody ratio (DAR) and the effect thereof on pharmacokinetics and tumor targeting, a dual-labeling approach was developed, wherein t...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-14-1141
更新日期:2014-10-15 00:00:00
abstract::Angiogenesis is essential for the growth of solid tumors. We have observed previously that the vascular endothelial cells of astrocytic brain tumors express human telomerase reverse transcriptase (hTERT) mRNA, suggesting a role for telomerase in the angiogenesis of these neoplasms. Here, we used an in vitro model to d...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:2003-07-01 00:00:00
abstract::Acute myeloid leukemia (AML) is a heterogeneous clonal disorder with a poor clinical outcome. Previously, we showed that overproduction of reactive oxygen species (ROS), arising from constitutive activation of NOX2 oxidase, occurs in >60% of patients with AML and that ROS production promotes proliferation of AML cells...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-19-1920
更新日期:2020-03-01 00:00:00
abstract::Mandibular condyles of late embryonic NMRI mice were used to study the effect of the FBR murine osteosarcoma virus in an in vitro tissue culture system. Chondroprogenitor cells and chondroblastic cells present in the condylar tissue normally undergo rapid differentiation in vitro which results in an advanced stage of ...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1986-06-01 00:00:00
abstract::Connexins are tumor suppressors, and human breast connexin 26 (Cx26) and connexin 43 (Cx43) gap junctions are often down-regulated in breast cancer. We previously showed that Cx26 and Cx43 overexpressed in MDA-MB-231 breast cancer cells inhibited tumor growth in vivo but not in two-dimensional cultures. In the current...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-05-4302
更新日期:2006-10-15 00:00:00
abstract::Soluble membrane fractions derived from polyoma tumor cells trigger lymphocytes, derived from polyoma-immunized animals, but not from nonimmunized controls, to release the lymphokine, macrophage migration-inhibitory factor. The reaction can be blocked by sera from polyoma-bearing animals. Absorption of these sera with...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1986-10-01 00:00:00
abstract::We analyzed the epidermal growth factor receptor gene using a complementary DNA probe of the epidermal growth factor receptor gene in 21 uncultured primary breast carcinomas and found that the gene was amplified in three of these tumors. We further demonstrated by immunohistochemistry using a monoclonal antibody to th...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1988-01-01 00:00:00
abstract::Identification of specific chromosomal aberrations in transformed mesothelial cells is an important step in elucidating the mechanism of transformation of these cells which are targets for occupational and environmental carcinogens, such as asbestos fibers. Cytogenetic analysis of normal rat mesothelial cell lines rev...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1991-08-01 00:00:00
abstract::Progression of well differentiated rat mammary adenocarcinomas to very anaplastic phenotypes was found to correlate with a systematic and significant amplification of a mutant HRAS allele. Tumors with high amplification levels of this oncogene were analyzed by chromosomal in situ hybridization; in four of the cases th...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1993-11-15 00:00:00
abstract::Lipotropes (choline, methionine, folic acid, and vitamin B12) are required for normal metabolic function at the cellular and subcellular levels. Deficiencies of any or all of them to a point of influence on methyl group metabolism has a profound effect on synthesis of cellular macromolecules and on cell proliferation....
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1983-05-01 00:00:00
abstract::Retinoids that regulate cell growth, differentiation, and apoptosis have shown promising results in preclinical studies and in a few clinical trials of cancer chemoprevention and therapy. However, the clinical use of retinoids is limited by resistance of certain malignant cells to their antitumor effects and by side e...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:2003-07-01 00:00:00
abstract::To determine whether expression of the XPD/ERCC2 repair gene in trichothiodystrophy (TTD) group D cells could restore mutagenesis characteristics of repair-proficient cells, we compared the UV mutagenesis of normal cells, TTD group D cells, and TTD group D cells retrovirally transduced by the wild-type XPD/ERCC2 gene ...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1996-12-01 00:00:00
abstract::Electron micrographs of CCL237 and FET cells (two slowly growing, differentiated human colon carcinoma lines) revealed enlarged mitochondria with few cristae. Polarographic measurement of respiratory activity in mitochondria isolated from these cell lines was compared to that of CV-1 cells (a normal monkey kidney epit...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1989-06-15 00:00:00
abstract::Unlike the growth factor dependence of normal cells, cancer cells can maintain growth factor-independent glycolysis and survival through expression of oncogenic kinases, such as BCR-Abl. Although targeted kinase inhibition can promote cancer cell death, therapeutic resistance develops frequently, and further mechanist...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-10-0608
更新日期:2010-10-15 00:00:00
abstract::Bisphosphonate (BP), a specific inhibitor of osteoclasts, has been widely used as a beneficial agent for the treatment of bone metastases in patients with breast cancer. It is well recognized that BP reduces osteolysis by promoting apoptosis in osteoclasts. However, recent animal and human data suggest that BPs not on...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:2001-06-01 00:00:00
abstract::The chemokine receptor CXCR4 plays a central role in organ-specific homing and tumor spreading and is induced by hypoxia. B lymphocytes are exposed to low oxygen tensions during their development, but the influence of hypoxia on their physiology is poorly understood. Here, we show that hypoxia is associated with up-re...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-06-4722
更新日期:2007-09-15 00:00:00