Abstract:
:3-Deazaguanine (3-DG), a purine analogue, has unusual antitumor activity against experimental mammary tumor models and a number of other solid tumors. Others have shown that mutant CHO cells deficient in hypoxanthine guanine phosphoribosyl transferase (HGPRTase) or adenine phosphoribosyl transferase (APRTase) are resistant to 3-DG. We developed a L1210 cell line resistant to 3-DG, L1210/3-DG, by subculturing the parent L1210/0 cells in the presence of increasing concentrations of 3-DG. The IC50 was 3.5 microM and 620 microM for L1210/0 and L1210/3-DG, respectively. Cytotoxicity studies proved the resistance to be stable. Examination of the baseline-specific activity of HGPRTase and APRTase showed that the former was 118-fold lower in L1210/3-DG than in L1210/0, and the latter demonstrated no difference. A 4-h treatment of the cell lines at IC50 doses showed 48% and 23% reductions in IMP dehydrogenase in L1210/0 and L1210/3-DG, respectively. The rate of de novo purine biosynthesis was studied by using [14C]formic acid. Formate flux increased 2-fold in L1210/3DG in concert with the observed deficiency of HGPRTase in the cell line. 3-DG uptake was studied with [14C]-labelled compound. The total radioactivity was 9-fold higher in L1210/0 than in L1210/3-DG at 2 h. Subsequent chromatographic separation of radioactivity showed the 3-DG and 3-deazaguanosine pools of the drug to be equal in both lines. However, 3-DG nucleotide pools at 1 min and 2 h were 2.5-fold and 16-fold lower, respectively, in L1210/3-DG than in L1210/0. 3-DG incorporation studies with radiolabelled drug demonstrated that 3-deazaguanine is incorporated in the acid-insoluble fraction of the cell. These studies conclude that HGPRTase, and not APRTase, is required for the activation of drug. Inhibition of IMP dehydrogenase is partially responsible for antitumor activity of the drug. The incorporation of drug into nucleic acids may be a major mechanism for its antitumor activity. Further studies using a cloned cDNA probe for hypoxanthine guanine phosphoribosyltransferase (HGPRT) demonstrated no change in the DNA arrangements of the L1210/3-DG cell line, and Northern blot analysis showed approximately equal expression of mRNA in both cell lines.
journal_name
Cancer Chemother Pharmacoljournal_title
Cancer chemotherapy and pharmacologyauthors
Singh G,Luna MK,Ardalan Bdoi
10.1007/BF00273409subject
Has Abstractpub_date
1988-01-01 00:00:00pages
191-6issue
3eissn
0344-5704issn
1432-0843journal_volume
22pub_type
杂志文章abstract::Treosulfan (L-threitol 1,4-bismethanesulfonate, Ovastat) is an alkylating agent and a structural analogue of busulfan. It has been established in the clinical chemotherapy of human ovarian carcinomas for several years and has additionally been shown to be effective against xenografted human breast carcinomas. No other...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00688319
更新日期:1996-01-01 00:00:00
abstract::Thymidine (dThd) concentrations have been measured in the sera of normal subjects and solid tumor cancer patients by means of a sensitive high-pressure liquid chromatographic assay to determine whether natural and methotrexate (MTX)-induced fluctuations were large enough to alter the toxicity of MTX to marrow. The mea...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00434388
更新日期:1981-01-01 00:00:00
abstract::Cyclophosphamide pharmacokinetics have been studied in 16 female patients with advanced breast cancer. The group included 7 patients who were greater than 20%, less than or equal to 30% over ideal body weight and 5 patients who were greater than 30% over ideal body weight. Cyclophosphamide plasma elimination half-live...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 临床试验,杂志文章
doi:10.1007/BF00570489
更新日期:1987-01-01 00:00:00
abstract::While N-phosphonacetyl-L-aspartic acid (PALA), an inhibitor of de novo pyrimidine biosynthesis, demonstrated a unique spectrum of activity during preclinical drug evaluation, multiple clinical trials have shown it to possess minimal clinical activity. One explanation for the disappointing results is the possibility th...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00296262
更新日期:1987-01-01 00:00:00
abstract:PURPOSE:The safety of S-1 in recurrent colorectal cancer patients with chronic myeloid leukemia (CML) treated with dasatinib has not been established. We evaluated the safety and pharmacokinetics of S-1 in a recurrent colon cancer patient with CML treated with dasatinib. PATIENT:A 70-year-old man had undergone surgery...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-014-2620-8
更新日期:2014-12-01 00:00:00
abstract::A human stomach-adenocarcinoma cell line (MKN-45) was selected for resistance to Adriamycin by stepwise exposure to increasing concentrations of this agent. The resulting cell line (MKN/ADR) exhibited a high level of cross-resistance to topoisomerase II (topo II)-targeted drugs such as Adriamycin, mitoxantrone, and et...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s002800050751
更新日期:1998-01-01 00:00:00
abstract:PURPOSE:Thalidomide has recently shown significant promise in the treatment of some types of cancer, and trials in combination with conventional chemotherapy are being undertaken. We wished to determine whether thalidomide potentiated the effect of cyclophosphamide, a commonly used cytotoxic drug, in a murine tumour mo...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-002-0482-y
更新日期:2002-09-01 00:00:00
abstract:PURPOSE:Icotinib is a new first-generation epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors. A phase II study was conducted to evaluate the efficacy and safety of icotinib in combination with whole-brain radiotherapy (WBRT) in Chinese NSCLC patients with brain metastases (BMs); the cerebrospinal fluid...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-015-2760-5
更新日期:2015-09-01 00:00:00
abstract:BACKGROUND:We wished to define the maximum tolerated dose (MTD), toxicity, and pharmacokinetics of the novel isoflav-3-ene, NV06 (Phenoxodioltrade mark), a compound with a diphenolic structure related chemically and biologically to genistein and flavopiridol. PATIENTS AND METHODS:Twenty-one patients with advanced canc...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-006-0189-6
更新日期:2006-10-01 00:00:00
abstract:PURPOSE:Malignant pleural mesothelioma (MPM) is a highly lethal neoplasm. S-1 has been developed as a novel oral antineoplastic agent based on the modulation of 5-fluorouracil (5-FU) bioactivity. This study was conducted to investigate the preclinical therapeutic effect of S-1 on MPM. METHODS:We used three human MPM c...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-010-1503-x
更新日期:2011-08-01 00:00:00
abstract::Mitoxantrone, 1,4-dihydroxy-5,8-bis(((2-[(2-hydroxyethyl)amino]ethyl) amino))-9,10-anthracenedione dihydrochloride, a new antitumor agent was evaluated in nine cancer patients as part of a phase I trial. In general, the drug was well tolerated. Leukopenia was the dose-limiting toxic effect. Mild to moderate leukopenia...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00578556
更新日期:1980-01-01 00:00:00
abstract:BACKGROUND:Head and neck squamous carcinoma (HNSCC) is a chemotherapy-sensitive tumour, but this sensitivity is not reflected in an impact on survival. The study of new drugs is therefore indicated. Pirarubicin (4'-O-tetrahydropyranyl-doxorubicin) has a higher preclinical index than doxorubicin, with low cardiotoxicity...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 临床试验,杂志文章
doi:10.1007/BF00686275
更新日期:1994-01-01 00:00:00
abstract::Pyrazine diazohydroxide (sodium salt, NSC 361456; PZDH) is a new antitumor drug with relatively broad activity in initial evaluations against murine leukemias, solid tumors, and two human tumor xenografts in vivo. The present studies were designed to address questions about PZDH activity on different treatment schedul...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00686053
更新日期:1990-01-01 00:00:00
abstract:PURPOSE:To compare the response, survival, hematological and non-hematological toxicities of gemcitabine administrated at fixed-dose rate infusion (10 mg/m(2)/min, FDR) and standard 30 min infusion in patients with advanced non-small-cell lung cancer (NSCLC). METHODS:Electronic databases of MEDLINE, EMBASE and Cochran...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章,meta分析
doi:10.1007/s00280-012-1974-z
更新日期:2012-12-01 00:00:00
abstract:PURPOSE:To investigate the efficacy and safety of combination chemotherapy with biweekly paclitaxel plus infusional 5-fluorouracil and leucovorin in the treatment of patients with advanced or metastatic gastric cancer. PATIENTS AND METHODS:Chemonaive patients with histologically confirmed advanced or recurrent inopera...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-008-0752-4
更新日期:2009-02-01 00:00:00
abstract:BACKGROUND:Metastatic bladder cancer is a serious condition with a 5-year survival rate of approximately 14 %, a rate that has remained unchanged for almost three decades. Thus, there is a profound need to identify the driving mutations for these aggressive tumors to better determine appropriate treatments. Mutational ...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-014-2376-1
更新日期:2014-03-01 00:00:00
abstract::A total of 26 evaluable patients with previously untreated, non-resectable adenocarcinoma of the lung were given 80 mg/m2 i.v. teniposide daily for 5 days every 3 weeks. Three partial responses (11%) were obtained that lasted for 12, 11 and 32 weeks, respectively. Leucopenia was the dose-limiting side effect, with WBC...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00685166
更新日期:1991-01-01 00:00:00
abstract:OBJECTIVES:The aim of this phase II study was to evaluate the response rate to gemcitabine combined with cisplatin in patients with locally advanced, metastatic or recurrent biliary tract cancer who had received no prior chemotherapy. METHODS:The treatment consisted of cisplatin 70 mg/m(2) in intravenous infusion foll...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章,多中心研究
doi:10.1007/s00280-007-0444-5
更新日期:2008-01-01 00:00:00
abstract:PURPOSE:Irinotecan-induced gut toxicity is mediated in part by Toll-Like receptor 4 (TLR4) signalling. The primary purpose of this preclinical study was to determine whether blocking TLR4 signalling by administering (-)-naloxone, a TLR4 antagonist, would improve irinotecan-induced gut toxicity. Our secondary aim was to...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-016-3223-3
更新日期:2017-02-01 00:00:00
abstract::Plasmatic and salivary concentrations of 5-FU were investigated in ten patients given 5-day continuous infusions of 5-fluorouracil (5-FU) (1 g/m2/day). Measurable concentrations of salivary 5-FU were scattered ranging from 6 to 100 ng/ml. Between individual 5-FU concentrations in saliva and plasma the coefficient of c...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00300243
更新日期:1989-01-01 00:00:00
abstract:PURPOSE:To investigate the synergistic cytotoxicity of TRAIL in combination with chemotherapeutic agents in A549 cell lines, we systematically evaluated the cytotoxicity of TRAIL alone and TRAIL in combination with cisplatin, paclitaxel (Taxol) or actinomycin D in A549 cell lines in vitro and in vivo, and whether the s...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-004-0867-1
更新日期:2005-02-01 00:00:00
abstract::All-trans retinoic acid (ATRA) induces a high incidence of complete remission (CR) in patients with acute promyelocytic leukemia (APL); however, the magnitude of this agent's contribution to increased rates of cure of this disease has not yet been established. From 1990 to 1995 we used RA as remission induction therap...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s002800051057
更新日期:1997-01-01 00:00:00
abstract::A sensitive solid-phase-extraction and high-performance liquid chromatography (HPLC) method has been developed to investigate the pharmacokinetics and metabolism of the hypoxic-cell cytotoxic agent tirapazamine (1,2,4-benzotriazine-3-amine 1,4-di-N-oxide; WIN 59075, SR 4233), currently in phase I/II studies in the Uni...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00685859
更新日期:1995-01-01 00:00:00
abstract:PURPOSE:Low-dose methotrexate (MTX) therapy is the cornerstone treatment of acute lymphoblastic leukemia (ALL) and may enhance the activation of 6-mercaptopurine (6-MP) to 6-thioguanine nucleotides (6-TGN). Yet, data have established that high-dose MTX (HDMTX) hampers the accumulation of 6-TGN in red blood cells (RBC) ...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-009-1205-4
更新日期:2010-09-01 00:00:00
abstract:PURPOSE:Recently, it was shown that chrysin causes upregulation of UGT1A1 in Caco-2 intestinal cells. Therefore, we proposed that oral chrysin may reduce irinotecan (CPT-11) induced diarrhoea by shifting the SN-38G/SN-38 equilibrium towards the inactive SN-38G in the gastrointestinal mucosa. The purpose of this study w...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 临床试验,杂志文章
doi:10.1007/s00280-005-0053-0
更新日期:2006-02-01 00:00:00
abstract::Interleukin 12 (IL-12) is a heterodimeric cytokine with a number of biological effects that are consistent with its potential role as an antitumor agent. The antimetastatic and antitumor activities of IL-12 have been demonstrated in a number of murine tumor models. Both the inhibition of established experimental pulmo...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章,评审
doi:10.1007/s002800051031
更新日期:1996-01-01 00:00:00
abstract::The intestinal absorption of 6-mercaptopurine and its nucleoside 6-mercaptopurine riboside has been studied in the rat with the in situ dual luminal and vascular perfusion. 6-Mercaptopurine is an inactive prodrug that requires intestinal absorption, cellular uptake and intracellular anabolism for cytotoxic activity. V...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00689198
更新日期:1995-01-01 00:00:00
abstract::The interaction between cisplatin (cDDP) and tamoxifen (TAM) was evaluated in the human head and neck squamous-carcinoma cell lines UM-SCC-10B and UM-SCC-5. Synergy between cDDP and TAM was demonstrated in the UM-SCC-10B cell line. Concordant with the synergistic effect between cDDP and TAM, the rate of development of...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00686837
更新日期:1995-01-01 00:00:00
abstract::Previous studies have demonstrated that treatment with fludarabine 4 h prior to arabinosylcytosine (ara-C) potentiates the accumulation of the active triphosphate of ara-C (ara-CTP) in leukemic lymphocytes. The clinical efficacy of this combination was evaluated in 15 patients with chronic lymphocytic leukemia (CLL) t...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00686108
更新日期:1994-01-01 00:00:00
abstract:PURPOSE:PF-00337210 is an oral, highly selective vascular endothelial growth factor receptor (VEGFR) inhibitor. We evaluated a composite of biomarkers in real time to identify the recommended phase 2 dose (RP2D) and preliminary anticancer activity of PF-00337210. PATIENTS AND METHODS:Patients (Pts) with advanced cance...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-016-2958-1
更新日期:2016-03-01 00:00:00