Abstract：
:A majority of tumor cell lines are considered to be "methionine-dependent" because of their inability to grow in culture when methionine is replaced by its precursor, homocysteine. We have previously shown that this phenotype is not due to the incapacity to synthesize methionine from homocysteine but rather to a deficiency in the "methionine salvage pathway", including 4-methylthio-2-oxobutanoic acid (MTOB), which is transaminated into methionine. At low concentrations MTOB can restore normal growth of methionine-dependent cell lines in the absence of methionine. However, when MTOB concentrations are increased the cells undergo apoptosis. Methional, a metabolite of MTOB produced by the branched-chain oxo acid dehydrogenase complex, is a potent inducer of apoptosis in a murine lymphoid cell line. We suggest that the methionine-dependent phenotype is associated with a reduced content of methional, which behaves as a proapoptotic agent. For this reason, methionine-dependent cells have a relative survival advantage.
journal_name
Oncol Resjournal_title
Oncology researchauthors
Dumontet C,Roch AM,Quash Gsubject
Has Abstractpub_date
1996-01-01 00:00:00pages
469-71issue
12eissn
0965-0407issn
1555-3906journal_volume
8pub_type
杂志文章abstract：:PPAR-gamma is known to have a growth-suppressive effect in different cancers. In this study, we investigated the role of PPAR-gamma in the development of Barrett's esophagus (BE) and esophageal adenocarcinoma (EA). We used immunohistochemistry and real-time PCR to analyze differences in PPAR-gamma protein and mRNA exp...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504011x12935427587849
更新日期：2011-01-01 00:00:00
abstract：:Spinal osteosarcoma (OS) is a malignant tumor that has a poor outcome. MicroRNA-520b (miR-520b) acts as a cancer suppressor in various types of cancer. Because of the limited amount of literature on OS, we aimed to identify the role of miR-520b in OS. The miR-520b level in clinical spinal OS tissues and adjacent nontu...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504017X14873430389189
更新日期：2017-09-21 00:00:00
abstract：:Chemoresistance is a major impediment to the successful treatment of cancer. It involves various mechanisms, including defects in the apoptosis program that is induced by anticancer drugs. To further explore the mechanisms underlying the development of chemoresistance in ovarian carcinoma after cisplatin (CDDP) treatm...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504003108748410
更新日期：2003-01-01 00:00:00
abstract：:Osteosarcoma is the most common primary bone malignancy manifested predominantly in children and young adults. Studies indicate that miR-107 is involved in the pathogenesis of osteosarcoma and that tropomyosin 1 (TPM1) acts as a tumor suppressor in many types of cancer. In this study, we analyzed the effect of miR-107...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504017X14882829077237
更新日期：2017-09-21 00:00:00
abstract：:Claudin18 (CLDN18) is necessary for intercellular junctions and is reported to be involved in cell migration and metastasis, making it like an oncogene in various cancer types. However, the biological function and regulatory mechanisms of CLDN18 in lung adenocarcinoma are not yet clear. In this study, we found downreg...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504017X15112639918174
更新日期：2018-05-07 00:00:00
abstract：:Human telomerase is a ribonucleoprotein that maintains telomeres by adding TTAGGG tandem repeat sequences using RNA template of the enzyme. Telomerase activity is highly expressed in immortalized cells but not in most somatic cells, except for some renewal tissues, such as hematopoietic stem cells. Therefore, telomera...
journal_title：Oncology research
pub_type： 杂志文章
doi：
更新日期：1998-01-01 00:00:00
abstract：:Topotecan, a topoisomerase I poison and water-soluble derivative of camptothecin, has shown promise in treating solid tumors; however, the drug is unstable under physiological conditions and converts to an inactive form within 30 minutes. Encapsulating topotecan in liposomes (LIP-TPT) minimizes inactivation. The effic...
journal_title：Oncology research
pub_type： 杂志文章
doi：
更新日期：1995-01-01 00:00:00
abstract：:Our recent studies have shown that vanadium, a dietary micronutrient, has an inhibitory response against experimentally induced rat liver carcinogenesis. In the present study, the effect of vanadium on hepatic xenobiotic biotransformation in rats exposed to diethylnitrosamine (DENA, 200 mg/kg, IP) was investigated to ...
journal_title：Oncology research
pub_type： 杂志文章
doi：
更新日期：1999-01-01 00:00:00
abstract：:The pre-mRNA splicing regulator serine-arginine protein kinase 1 (SRPK1), a member of the SR kinase family, plays an essential role in cancer development and various pathophysiological processes. However, its expression pattern and functions in renal cell carcinoma (RCC) remain unknown. Therefore, the aim of this stud...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504016X14743324568129
更新日期：2017-03-13 00:00:00
abstract：:MicroRNAs (miRNAs) play important roles in the carcinogenesis of cervical cancer. However, the expression and underlying mechanisms of miRNA in cervical cancer progression remain unclear. In the present study, our data showed that the expression of miR-138-5p was significantly downregulated in cervical cancer tissues,...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504017X15017209042610
更新日期：2018-04-10 00:00:00
abstract：:ErbB4 is a member of the ErbB family of receptor tyrosine kinases. Because of a paucity of appropriate pharmacologic tools, little is known about ErbB4 functions in vivo. In response to this need, we hypothesized that a recombinant form of the extracellular domain of ErbB4 would antagonize ligand-induced receptor tyro...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/0965040042707907
更新日期：2004-01-01 00:00:00
abstract：:The anticancer drug Adriamycin is widely used in cancer chemotherapy and is classified as a topoisomerase II inhibitor. However, in the presence of formaldehyde, Adriamycin also forms high levels of DNA adducts. In this study, a new series of butyric acid and formaldehyde-releasing drugs related to AN9 (pivaloyloxymet...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504005776382305
更新日期：2005-01-01 00:00:00
abstract：:Treatment of female SKH-1 hairless mice with ultraviolet B light twice a week for 20 weeks resulted in a population of tumor-free mice with a high risk of developing skin tumors during the next several months in the absence of additional UVB treatment (high-risk mice). Topical applications of nondenatured soymilk but ...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/0965040041292350
更新日期：2004-01-01 00:00:00
abstract：:Accumulated studies have strongly implicated aberrantly expressed microRNAs (miRNAs) in carcinogenesis and cancer progression of various cancers, including colorectal cancer (CRC). Hence, a comprehensive study of miRNAs and their association with CRC may be a promising therapeutic method for patients with this maligna...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504018X15188747585738
更新日期：2018-10-17 00:00:00
abstract：:Neuroendocrine tumors (NETs) represent a relatively rare form of neoplasias for which, in advanced unresectable stages, palliative treatment options remain limited largely to the use of somatostatin analogues or chemotherapy. Several newer targeted therapeutic options, alone or in combination with somatostatin analogu...
journal_title：Oncology research
pub_type： 杂志文章,评审
doi：10.3727/096504011x13123323849799
更新日期：2011-01-01 00:00:00
abstract：:Concentrations of the flame retardant 2,2',4,4'-tetrabrominated diphenyl ether (2,2',4,4'-TeBDE) in the adipose tissue of 77 individuals from Sweden were determined. The subjects were recruited during the time period 1995-97 and encompassed both men and women ranging from 28 to 85 years in age. Of the subjects include...
journal_title：Oncology research
pub_type： 杂志文章
doi：
更新日期：1998-01-01 00:00:00
abstract：:Whether the phenotypes of drug resistance and metastatic activity in cancer are dependent on each other or not is controversial. We compared in vitro invasive properties of human hepatoma cells resistant to epirubicin and rich in P-glycoprotein (Pgp) (HB8065/R) with the parental epirubicin-sensitive, Pgp-poor cells (H...
journal_title：Oncology research
pub_type： 杂志文章
doi：
更新日期：1998-01-01 00:00:00
abstract：:Pancreatic cancer (PC) is a devastating malignant disease with a poor prognosis. This study aimed to investigate the role of urothelial carcinoma associated 1 (UCA1) in the progression of PC. Our results revealed that long noncoding RNA (lncRNA) UCA1 was overexpressed in PC tissues compared with adjacent histologicall...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504017X14888987683152
更新日期：2017-11-02 00:00:00
abstract：:Medroxyprogesterone (MPA) is used for the conservative treatment of endometrial cancer. Unfortunately, progesterone resistance seriously affects its therapeutic effect. The purpose of the current study was to investigate the influence of deletion of AT-rich interactive domain 1A (ARID1A) in progesterone resistance in ...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504019X15561873320465
更新日期：2019-09-23 00:00:00
abstract：:Head and neck squamous cell carcinoma (HNSCC) ranks as the sixth most frequent cancer worldwide. HNSCC cell lines are typically refractory to transforming growth factor-beta (TGF-beta)-mediated cell cycle arrest. A number of these cell lines carry inactivating mutations of the TGF-beta type II (TbetaR-II) receptor, an...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/000000003108748612
更新日期：2003-01-01 00:00:00
abstract：:Human papillomavirus type 16 (HPV16) is a major causative factor in the development of uterine cervical carcinomas. We investigated the role of E6/E7 in tumor formation. Skin-specific E6/E7 transgenic mice showed approximately twice as many tumors compared with nontransgenic mice in dimethylbenz[a]anthracene (DMBA)-in...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/000000006783980964
更新日期：2007-01-01 00:00:00
abstract：:Agosterol A (AG-A) is a novel agent that reverses P-glycoprotein (P-gp) and multidrug resistance protein-1 (MRP1)-meditated multidrug resistance (MDR). We have synthesized [125I]11-azidophenyl agosterol A (azidoAG-A), a photoaffinity analog of AG-A, and characterized its binding to P-gp in membrane vesicles prepared f...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/000000003108748595
更新日期：2003-01-01 00:00:00
abstract：:O6-Alkylguanine-DNA alkyltransferase (AGT) is a DNA repair protein that reverses alkylation damage produced by chloroethylnitrosoureas and is a major determinant of cellular resistance to adjuvant chemotherapy with these drugs. AGT activity was measured in 119 samples from 69 patients, including normal, tumor, and dis...
journal_title：Oncology research
pub_type： 杂志文章
doi：
更新日期：1997-01-01 00:00:00
abstract：:There is growing evidence on the clinical significance of Tumor Microenvironment (TME) cells in predicting prognosis and therapeutic effects. However, cell interactionsin tumor microenvironments have not been thoroughly studied or systematicallyanalyzed so far. In this study, 22 immune cell components in the lung aden...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504020X15907428281601
更新日期：2020-05-29 00:00:00
abstract：:Although epidermal growth factor receptor tyrosine kinase inhibitors (EGFR TKIs) are used as first-line agents for treating nonsquamous cell lung cancer with EGFR mutation, there are many patients who have to receive these drugs following platinum-based chemotherapy. This study was designed to define whether exposure ...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504012x13285365944337
更新日期：2011-01-01 00:00:00
abstract：:We have investigated the role of protein kinase C (PKC) in the multidrug resistance (MDR) phenotype of human KB carcinoma cell lines. The PKC activator 12-O-tetradecanoylphorbol-13-acetate (TPA) reduced daunomycin accumulation in both drug-sensitive KB-3-1 and MDR KB-C1 cells in a time-dependent manner. The inactive p...
journal_title：Oncology research
pub_type： 杂志文章
doi：
更新日期：1996-01-01 00:00:00
abstract：:Hematopoietic pre-B-cell leukemia transcription factor (PBX)-interacting protein (HPIP/PBXIP1) is a nucleo-cytoplasmic shuttling protein, and its expression is associated with cancer aggressiveness. However, the role of HPIP in ovarian cancer is still unclear. Here, we aimed to clarify the role of HPIP in epithelial-m...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504016X14575597858654
更新日期：2016-01-01 00:00:00
abstract：:The poly(ADP-ribose) polymerase (PARP) enzymes play a key role in the regulation of cellular processes (e.g., DNA damage repair, genomic stability). It has been shown that PARP inhibitors (PARPIs) are selectively cytotoxic against cells having dysfunctions in genes involved in DNA repair mechanisms (synthetic lethalit...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504017X14926854178616
更新日期：2017-11-02 00:00:00
abstract：:HL-60 cells isolated for resistance to vincristine are multidrug resistant and defective in the cellular accumulation of drug. Further studies demonstrate that these cells are also highly defective in 12-O-tetradecanoylphorbol-13-acetate (TPA) induced differentiation to macrophages. Analysis of this system demonstrate...
journal_title：Oncology research
pub_type： 杂志文章
doi：
更新日期：1992-01-01 00:00:00
abstract：:Human glioblastoma multiforme (GBM) accounts for the majority of human brain gliomas. Several TMEM proteins, such as TMEM 45A, TMEM 97, and TMEM 140, are implicated in human brain gliomas. However, the roles of TMEM168 in human GBM remain poorly understood. Herein we found that mRNA levels of TMEM168 were overexpresse...
journal_title：Oncology research
pub_type： 杂志文章
doi：10.3727/096504018X15478559215014
更新日期：2019-07-12 00:00:00
