Abstract:
PURPOSE:Erlotinib (Tarceva®, OSI-774) is a small molecule inhibitor of the epidermal growth factor receptor (EGFR) tyrosine kinase. As high-grade gliomas frequently show amplification, overexpression and/or mutation of EGFR, this drug has been tested in several clinical trials with glioblastoma patients, but unfortunately, with little success. As erlotinib is a known substrate of P-glycoprotein (P-gp) and breast cancer resistance protein (BCRP) we have investigated the effect of these ABC-transporters on the brain penetration of erlotinib. STUDY DESIGN:Erlotinib (50 mg/kg) was given by i.p. administration to wild-type (WT), Mdr1ab(-/-) (single P-gp knockout), Bcrp1(-/-) (single Bcrp1 knockout) and Mdr1ab(-/-)Bcrp1(-/-) (compound P-gp and Bcrp1 knockout) mice. Drug levels in plasma and tissues were determined by reversed-phase high-performance liquid chromatography. RESULTS:Relative to Mdr1ab(-/-)Bcrp1(-/-) mice that are deficient for both drug transporters, the area under the concentration time curve in brain tissue (AUC)(brain) of erlotinib decreased significantly by 1.6-fold in Mdr1ab(-/-) mice where Bcrp1 is present (49.6 ± 3.95 versus 31.1 ± 1.7, μg/g*h; P < 0.01). In Bcrp1(-/-) mice, were P-gp is present, a more pronounced 3.8-fold decrease to 13.0 ± 0.70, μg/g*h (P < 0.01) was observed, which is close to the 4.5-fold decrease in the AUC(brain) of erlotinib found in WT mice where both drug transporters are present (11.0 ± 1.35, P < 0.01). The plasma clearance of erlotinib was similar in mice deficient for P-gp and/or Bcrp1 compared with wild-type mice. In all other tissues the differences between the genotypes were negligible. CONCLUSIONS:Both P-gp and Bcrp1 reduce the brain penetration of erlotinib. Although P-gp appears to be the most effective factor limiting the brain penetration of erlotinib, the highest brain accumulation was observed when Bcrp1 was also absent. Strategies to inhibit P-gp/BCRP in patients to improve delivery of (novel molecular-targeted) substrate agents, such as erlotinib, to the brain may be required for treatment of intracranial malignancies.
journal_name
Invest New Drugsjournal_title
Investigational new drugsauthors
de Vries NA,Buckle T,Zhao J,Beijnen JH,Schellens JH,van Tellingen Odoi
10.1007/s10637-010-9569-1subject
Has Abstractpub_date
2012-04-01 00:00:00pages
443-9issue
2eissn
0167-6997issn
1573-0646journal_volume
30pub_type
杂志文章abstract:BACKGROUND:Relatively few studies have examined the activity of alkylating agents in the treatment of advanced colorectal adenocarcinoma. Recent reports have suggested possible therapeutic activity for high-dose intravenous melphalan administered with autologous bone marrow transplantation (BMT) support. We conducted a...
journal_title:Investigational new drugs
pub_type: 临床试验,杂志文章
doi:10.1007/BF00874443
更新日期:1994-01-01 00:00:00
abstract::Objective The aim of the current study was to examine the anticancer activity and the detailed mechanism of novel diisoquinoline derivatives in human gastric cancer cells (AGS). Methods The viability of AGS cells was measured by MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay. Cell cycle analy...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-018-0584-y
更新日期:2018-12-01 00:00:00
abstract::Fifteen patients with advanced carcinoma of the breast who had failed prior chemotherapy, were treated with recombinant gamma interferon at a dose of 2mg/m2 (1mg = 2.4 X 10(7) international units) intravenously for five consecutive days every other week. The median patient age was 51 and all patients had a performance...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/BF00173511
更新日期:1986-01-01 00:00:00
abstract::A series of 96 diarylamidine (and diarylimidazoline) derivatives were evaluated for their inhibitory effects on the growth and DNA synthesis of murine leukemia L1210 cells. The amidino- and imidazolino-substituted aryl moieties of the compounds consisted of phenyl, indole, indene, benzofuran, benzo[b]thiophene or benz...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/BF00172069
更新日期:1983-01-01 00:00:00
abstract:BACKGROUND:TAS-102 is a nucleoside antitumor agent consisting of trifluridine (FTD) and tipiracil hydrochloride (TPI). We investigated the recommended dose (RD) of TAS-102 plus irinotecan for metastatic colorectal cancer refractory to 5-fluorouracil (5-FU) and oxaliplatin. METHODS:This study was used a escalated dose ...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-015-0271-1
更新日期:2015-10-01 00:00:00
abstract:PURPOSE:DDB (dimethyl-4,4'-dimethoxy-5,6,5'6'-dimethylene dioxybiphenyl-2,2'-dicarboxylate) is a synthetic hepatoprotectant which has been widely used to treat chronic viral hepatitis B patients in China for more than 20 years. In this study, we evaluated DDB as a multidrug resistance (MDR) chemosensitizing agent. MET...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-006-9001-z
更新日期:2007-04-01 00:00:00
abstract::We have previously described a human pancreatic-ribonuclease variant, named PE5, which carries a non-contiguous extended bipartite nuclear localization signal. This signal comprises residues from at least three regions of the protein. We postulated that the introduction of this signal in the ribonuclease provides it w...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-010-9426-2
更新日期:2011-10-01 00:00:00
abstract::Trimetrexate (TMTX) is an analog of methotrexate and a potent inhibitor of the enzyme dihydrofolate reductase. In this phase I study, TMTX was given intravenously to 32 patients as a constant infusion over 24 hours every 28 days. The maximum-tolerated dose of TMTX was 200 mg/m2, with myelosuppression as the dose-limit...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/BF00177251
更新日期:1990-05-01 00:00:00
abstract::Although immune checkpoint inhibitors have improved the survival of small cell lung cancer (SCLC) patients, their efficacy in SCLC patients who relapsed after systemic chemotherapy is unclear. This retrospective study aimed to investigate the utility of treatment with atezolizumab plus carboplatin and etoposide in SCL...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-020-00983-6
更新日期:2020-08-11 00:00:00
abstract::Gemcitabine is a nucleoside analogue with excellent clinical activity against solid tumors. Within the cell, gemcitabine is rapidly phosphorylated to its active di- and triphosphate metabolites. Cytotoxicity with gemcitabine appears to be related to multiple effects on DNA replication, where gemcitabine triphosphate c...
journal_title:Investigational new drugs
pub_type: 杂志文章,评审
doi:10.1007/BF00194528
更新日期:1996-01-01 00:00:00
abstract:PURPOSE:Vorinostat (V) at levels >2.5 µM enhances chemotherapy in vitro. Yet the approved oral dose of 400 mg inconsistently achieves this level in patients. We developed an intermittent oral pulse-dose schedule of V to increase serum levels. We combined V with the cyclin dependent kinase inhibitor flavopiridol (F) whi...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-010-9447-x
更新日期:2011-10-01 00:00:00
abstract::Ninety per cent of pancreatic adenocarcinomas (PC) contain mutations of the K-Ras proto-oncogene resulting in constitutively activated Ras protein. A critical step in Ras activation is farnesylation of Ras protein. Farnesyl transferase inhibitors are compounds that inhibit farnesylation. We report the results of a pha...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-005-2908-y
更新日期:2005-10-01 00:00:00
abstract::Spirogermanium (NSC 192965) is a new metallic investigational anticancer drug of novel heterocyclic structure. Although its mode of action has not been fully elucidated, it appears that spirogermanium is not a phase or cell cycle specific drug and inhibits DNA, RNA and protein synthesis, the protein synthesis being th...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/BF00208894
更新日期:1983-01-01 00:00:00
abstract::Monoclonal antibodies directed against the immune checkpoint protein cytotoxic T-lymphocyte antigen-4 (CTLA-4; CD152) have been investigated in metastatic melanoma and other cancers and have shown promising results. Inhibition of CTLA-4 characteristically induces well-known side effects called "immune-related adverse ...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-014-0092-7
更新日期:2014-08-01 00:00:00
abstract::Human topoisomerase II (hTopoII) inhibitors are important chemotherapeutic agents in many different settings including treatment of malignant mesothelioma. Topoisomerase poisons, such as etoposide and doxorubicin, function by trapping the DNA-enzyme covalent complex producing DNA strand breaks which can ultimately lea...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-011-9720-7
更新日期:2012-08-01 00:00:00
abstract::There is no effective systemic therapy for disseminated metastatic melanoma. Data suggest that endothelin may play a role in pathophysiology of melanoma and that the dual endothelin receptor antagonist bosentan may have anti-tumor activity. This multicenter, open-label, single-arm, prospective, proof-of-concept study ...
journal_title:Investigational new drugs
pub_type: 杂志文章,多中心研究
doi:10.1007/s10637-006-9014-7
更新日期:2007-06-01 00:00:00
abstract:OBJECTIVE:Axitinib (AG-013736), an oral, potent, and selective inhibitor of vascular endothelial growth factor receptors 1, 2, and 3, is metabolized primarily by cytochrome P450 (CYP) 3A with minor contributions from CYP1A2, CYP2C19, and glucuronidation. Co-administration with CYP inhibitors may increase systemic expos...
journal_title:Investigational new drugs
pub_type: 杂志文章,随机对照试验
doi:10.1007/s10637-010-9511-6
更新日期:2012-02-01 00:00:00
abstract::An HPLC analytical method was applied to the determination of plasma concentrations of 5,6-dihydro-5-azacytidine (NSC 264880, DHAC) in two foxhounds after a rapid intravenous infusion of 300 mg/kg DHAC. The dose employed is the mouse equivalent LD10 dose which results in mild reversible toxicity in the dog. The declin...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/BF00180191
更新日期:1983-01-01 00:00:00
abstract::The matrix metalloproteinases (MMPs) are a family of at least fifteen secreted and membrane-bound zinc-endopeptidases. Collectively, these enzymes can degrade all of the components of the extracellular matrix, including fibrallar and non-fibrallar collagens, fibronectin, laminin and basement membrane glycoproteins. MM...
journal_title:Investigational new drugs
pub_type: 杂志文章,评审
doi:10.1023/a:1005722729132
更新日期:1997-01-01 00:00:00
abstract::The protective role of Luteolin (LUT) against Azoxymethane (AOM)-induced mouse colon carcinogenesis has been documented earlier. The aim of this study is to investigate on the mechanism of chemopreventive action exhibited by LUT employing AOM-induced colon carcinogenesis in mice as an experimental model. LUT inhibited...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-009-9359-9
更新日期:2011-04-01 00:00:00
abstract::Sixteen patients with stage IV melanoma, who were heavily pretreated, received 11 mg/m2/day of intravenous Irofulven for five consecutive days every 28 days. There were no objective tumor responses, although one patient exhibited stable disease after 4 cycles. The most common toxicities were grade 1/2 nausea, vomiting...
journal_title:Investigational new drugs
pub_type: 临床试验,杂志文章
doi:10.1023/a:1016261918256
更新日期:2002-08-01 00:00:00
abstract::Fluorouracil (5-FU) plus irinotecan combined with bevacizumab has significant activity in metastatic colorectal cancer (mCRC), but S-1 has become a substitute for continuous infusion of 5-FU and has a very low incidence of hand-foot syndrome. With the S-1 plus irinotecan regimen (SIR), the response rate was 62.5%, and...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-011-9743-0
更新日期:2012-08-01 00:00:00
abstract::Didemnin B is a depsipeptide derived from a Caribbean tunicate (sea squirt) that has demonstrated antineoplastic activity against a variety of murine tumor models, including the L1210 and P388 leukemia, the B16 melanoma, and M5076 sarcoma cell lines. Based on these data, we designed a phase II trial in which 15 patien...
journal_title:Investigational new drugs
pub_type: 临床试验,杂志文章
doi:10.1007/BF00877248
更新日期:1992-08-01 00:00:00
abstract::Polymeric cyclodextrin-based nanoparticles are currently undergoing clinical trials as nanotherapeutics. Using a non-covalent approach, we decorated two cross-linked cyclodextrin polymers of different molecular weights with an RGD peptide derivative to construct a novel carrier for the targeted delivery of doxorubicin...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-018-0711-9
更新日期:2019-08-01 00:00:00
abstract::Sphingosine-1-phosphate (S1P) is an important regulator of cancer development and progression. Its cellular concentration is controlled predominantly by sphingosine kinase (SK) and sphingosine-1-phosphate lyase (SPL). In the current study we showed that mRNA expressions for both SK and SPL were up-regulated throughout...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-009-9375-9
更新日期:2011-04-01 00:00:00
abstract::A Phase II study of Didemnin-B, a marine cyclic depsipeptide, was undertaken in patients with progressive epithelial ovarian cancer. The starting dose was 2.6 mg/m2. Fifteen patients received the drug, of whom twelve were evaluable. There were no responses observed in the twelve patients. The two most frequent toxicit...
journal_title:Investigational new drugs
pub_type: 临床试验,杂志文章
doi:10.1007/BF01275473
更新日期:1992-04-01 00:00:00
abstract::Background The MAPK pathway plays a central role in regulation of several cellular processes, and its dysregulation is a hallmark of biliary tract cancer (BTC). Binimetinib (MEK162), a potent, selective oral MEK1/2 inhibitor, was assessed in patients with advanced BTC. Patients and Methods An expansion cohort study in...
journal_title:Investigational new drugs
pub_type: 杂志文章,多中心研究
doi:10.1007/s10637-018-0600-2
更新日期:2018-12-01 00:00:00
abstract::Background Treatment of recurrent, unresectable granulosa cell tumor (GCT) of the ovary can be challenging. Given the rarity of the tumor, alternative therapies have been difficult to evaluate in large prospective clinical trials. Currently, to our knowledge, there are no reports of the use of immune checkpoint inhibi...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-020-01043-9
更新日期:2021-01-07 00:00:00
abstract::Signal transduction pathways, which regulate cell growth and survival, are up-regulated in many cancers and there is considerable interest in their pharmaceutical modulation for cancer treatment. However inhibitors of single pathway components induce feedback mechanisms that overcome the growth moderating effect of th...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-018-0642-5
更新日期:2019-06-01 00:00:00
abstract::Thirty-three patients with advanced colorectal carcinoma were entered on a phase II trial of weekly IV aminothiadiazole (175 mg/m2 escalated to 200 mg/m2) with concomitant allopurinol and non-steroidal anti-inflammatory agents (NSAID's). Toxicity was predominantly GI, cutaneous, and chest pain/dyspnea. Twenty-five per...
journal_title:Investigational new drugs
pub_type: 临床试验,杂志文章
doi:10.1007/BF00873044
更新日期:1994-01-01 00:00:00