Abstract:
:We studied the effect of riccardin D, a macrocyclic bisbibenzyl, which was isolated from the Chinese liverwort plant, on human leukemia cells and the underlying molecular mechanism. Riccardin D had a significant antiproliferative effect on human leukemia cell lines HL-60, K562 and its multidrug resistant (MDR) counterpart K562/A02 cells, but showed no effect on the topoisomerase-II-deficient HL-60/MX2 cells, as measured by the 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide (MTT) assay. The pBR322 DNA relaxation assay revealed that riccardin D selectively inhibited the activity of topoisomerase II (topo II). The suppression of topo II activity by riccardin D was stronger than that of etoposide, a known topo II inhibitor. After treatment with riccardin D, nuclear extracts of leukemia K562 and K562/A02 cells left the majority of pBR322 DNA in a supercoiled form. Further examination showed that riccardin D effectively induced HL-60, K562 and K562/A02 apoptosis as evidenced by externalization of phosphatidylserine and formation of DNA ladder fragments. The activation of cytochrome c, caspase-9, caspase-3 and cleaved poly ADP-ribose polymerase (PARP) was also enhanced, as estimated by Western blot analysis. By contrast, riccardin D was unable to induce apoptosis in the topoisomerase-II-deficient HL-60/MX2 cells, indicating that the induction of apoptosis by riccardin D was due to the inhibition of topo II activity. In addition, riccardin D was able to significantly decrease P-glycoprotein (P-gp) expression in K562/A02 cells. Taken together, our data demonstrate that riccardin D is a novel DNA topo II inhibitor which can induce apoptosis of human leukemia cells and that it has therapeutic potential for both regular and MDR strains of leukemia cells.
journal_name
Invest New Drugsjournal_title
Investigational new drugsauthors
Xue X,Qu XJ,Gao ZH,Sun CC,Liu HP,Zhao CR,Cheng YN,Lou HXdoi
10.1007/s10637-010-9554-8subject
Has Abstractpub_date
2012-02-01 00:00:00pages
212-22issue
1eissn
0167-6997issn
1573-0646journal_volume
30pub_type
杂志文章abstract::Background Metformin use is associated with reduced cancer risk in epidemiological studies and has preclinical anti-cancer activity in ovarian cancer models. The primary objective of this phase I study was to determine the recommended phase II dose (RP2D) of metformin in combination with carboplatin/paclitaxel in pati...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-020-00920-7
更新日期:2020-10-01 00:00:00
abstract::The purpose of this study was to assess the efficacy and safety of bevacizumab plus cetuximab with or without gemcitabine in patients with advanced pancreatic adenocarcinoma. Patients with locally advanced or metastatic pancreatic adenocarcinoma, previously untreated, were randomized to bevacizumab (10 mg/kg q2w) plus...
journal_title:Investigational new drugs
pub_type: 杂志文章,随机对照试验
doi:10.1007/s10637-011-9691-8
更新日期:2012-08-01 00:00:00
abstract::Breast cancer is commonly treated with anti-estrogens or aromatase inhibitors, but resistant disease eventually develops and new therapies for such resistance are of great interest. We have previously isolated several tamoxifen-resistant variant sub-lines of the MCF-7 breast cancer cell line and provided evidence that...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-011-9768-4
更新日期:2012-12-01 00:00:00
abstract::CC-1065 is a unique alkylating agent that preferentially binds in the minor groove of double-stranded DNA at adenine-thymine-rich sites. Although it has broad antitumor activity in preclinical models its development was discontinued because of deaths observed during preclinical toxicology studies. Adozelesin is a pote...
journal_title:Investigational new drugs
pub_type: 临床试验,杂志文章
doi:10.1007/BF00873138
更新日期:1996-01-01 00:00:00
abstract::Posterior reversible encephalopathy syndrome (PRES) is a clinical/radiological syndrome characterized by symptoms that can include seizure, headache, impaired vision and hypertension, and can be confirmed by magnetic resonance imaging. Numerous reports have emerged that describe PRES in cancer patients. The list of me...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-014-0193-3
更新日期:2015-06-01 00:00:00
abstract::4-demethoxydaunorubicin (4-dm DNR), a new analog of daunorubicin, was tested at an every 3-week dose schedule in 63 evaluable patients with various forms of disseminated malignancy. Utilizing the intravenous (i.v.) route of administration, the maximum tolerated dose (MTD) was 15-18 mg/m2; with the oral route the MTD w...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/BF00172075
更新日期:1983-01-01 00:00:00
abstract::We explored whether barasertib (AZD1152), a selective Aurora B kinase inhibitor, is a substrate for P-glycoprotein (Pgp, MDR1), breast cancer resistance protein (BCRP), and multidrug resistance protein 2 (MRP2) in vitro. Cell survival, drug transport, and competition experiments with barasertib pro-drug and the more a...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-013-9923-1
更新日期:2013-10-01 00:00:00
abstract::Menogarol is a new anthracycline undergoing phase I clinical trial. We report here the lethality after 2 hr exposure to 2 drug combinations of menogarol and several antitumor agents. A new statistical procedure was used to identify synergistic combinations. Most of these combinations were additive, except for menogaro...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/BF00179427
更新日期:1985-01-01 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::In vitro cytotoxicity and xanthine oxidase inhibition capabilities were investigated for five palladium (II) chelate complexes. The palladium complexes were synthesized by starting from S-alkyl-thiosemicarbazones where the alkyl component is methyl, ethyl, propyl or butyl. The solid complexes are characterized by elem...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-019-00751-1
更新日期:2019-12-01 00:00:00
abstract::Twenty-four evaluable patients with epithelial ovarian cancer resistant to primary therapy, or relapsing after response to initial therapy, were treated with acivicin utilizing a daily X 5 schedule. One patient achieved a partial response lasting five months; the remaining 23 patients showed no objective response. Pro...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/BF00172016
更新日期:1986-01-01 00:00:00
abstract::This study aimed to analyze the oncology "drug lag" (i.e., the delay in time required for the approval of oncology drugs) in Japan compared with that in the United States of America (US) or the European Union (EU) and to identify the factors associated with this lag. Using publicly available information, we collected ...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-011-9638-0
更新日期:2011-08-01 00:00:00
abstract::Receptor tyrosine kinases (RTKs) modulate a variety of cellular events, including cell proliferation, differentiation, mobility and apoptosis. In addition, RTKs have been validated as targets for cancer therapies. Microtubules are another class of proven targets for many clinical anticancer drugs. Here, we report that...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-010-9577-1
更新日期:2012-04-01 00:00:00
abstract::Radioactive iodine-refractory [(18)F] fluorodeoxy-glucose-positron emission tomography-positive thyroid carcinomas represent especially aggressive tumors. Targeting glucose metabolism by the transketolase isoenzyme transketolase like 1 (TKTL-1) which is over-expressed in various neoplasms, may be effective. The correl...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-008-9174-8
更新日期:2009-08-01 00:00:00
abstract::Background PF-06840003 is a highly selective indoleamine 2, 3-dioxygenase (IDO1) inhibitor with antitumor effects in preclinical models. This first-in-human phase 1 study evaluated safety, pharmacokinetics/pharmacodynamics, and preliminary efficacy in recurrent malignant glioma to determine the maximum tolerated dose ...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-020-00950-1
更新日期:2020-12-01 00:00:00
abstract::Transcription factor Specificity protein 1 (Sp1) and its downstream target survivin (inhibitor of apoptosis protein), play major roles in the pathogenesis of various cancers. Ewing Sarcoma (ES) is a common soft tissue/bone tumor in adolescent and young adults. Overexpression of survivin is also linked to the aggressiv...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-016-0417-9
更新日期:2017-04-01 00:00:00
abstract::Degradation of basement membrane and extracellular matrix by matrix metalloproteinases (MMPs) is believed to be required for tumor invasion, tumor-induced angiogenesis and vascular invasion. A synthetic hydroxamate, batimastat (also known as BB-94), inhibits MMPs by binding the zinc ion in the active site of the MMP. ...
journal_title:Investigational new drugs
pub_type: 临床试验,杂志文章
doi:10.1007/BF00210790
更新日期:1996-01-01 00:00:00
abstract::Background Overcoming resistance to anti-epidermal growth factor receptor (EGFR) monoclonal antibodies (mAbs) in patients with KRAS wildtype (WT) metastatic colorectal cancer (mCRC) could help meet the needs of patients with limited treatment options. Methods In this phase 1b study, patients with N/KRAS WT, MET-positi...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-020-00928-z
更新日期:2020-12-01 00:00:00
abstract::Pre-clinical and clinical studies have shown that trifluoperazine (TFP) can modulate multidrug resistance. We have performed a Phase II trial of TFP and doxorubicin in doxorubicin-naive patients with metastatic breast cancer. We hypothesized that TFP would inhibit the development of doxorubicin resistance, resulting i...
journal_title:Investigational new drugs
pub_type: 临床试验,杂志文章
doi:10.1007/BF00873916
更新日期:1993-02-01 00:00:00
abstract::Glioblastoma is a fast-growing primary brain tumor observed in adults with the worst prognosis. Preclinical studies have demonstrated the encouraging anticancer activity of statins. This study evaluated the efficacy of atorvastatin in combination with standard therapy in patients with glioblastoma. In this prospective...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-020-00992-5
更新日期:2020-08-27 00:00:00
abstract::Background This open-label, first-in-human, phase 1 study evaluated AMG 232, an oral selective MDM2 inhibitor in patients with TP53 wild-type (P53WT), advanced solid tumors or multiple myeloma (MM). Methods In the dose escalation (n = 39), patients with P53WT refractory solid tumors enrolled to receive once-daily AMG ...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-019-00840-1
更新日期:2020-06-01 00:00:00
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 unfortunat...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-010-9569-1
更新日期:2012-04-01 00:00:00
abstract::Gemcitabine is a deoxycytidine (dCyd) analog with activity in leukemia and solid tumors, which requires phosphorylation by deoxycytidine kinase (dCK). Decreased membrane transport is a mechanism of resistance to gemcitabine. In order to facilitate gemcitabine uptake and prolong retention in the cell, a lipophilic pro-...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-009-9377-7
更新日期:2011-06-01 00:00:00
abstract::The diarylsulfonylureas have shown promise in xenograft models of childhood cancer. Sulofenur has been evaluated in phase I and II trials in adults with a variety of solid tumors, but the toxicity and maximum tolerated dose of sulofenur in children and adolescents have not been determined. In a phase I study, sulofenu...
journal_title:Investigational new drugs
pub_type: 临床试验,杂志文章
doi:10.1007/BF02614222
更新日期:1995-01-01 00:00:00
abstract::LY2457546 is a potent and orally bioavailable inhibitor of multiple receptor tyrosine kinases involved in angiogenic and tumorigenic signalling. In biochemical and cellular assays, LY2457546 demonstrates potent activity against targets that include VEGFR2 (KDR), PDGFRβ, FLT-3, Tie-2 and members of the Eph family of re...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-011-9640-6
更新日期:2012-06-01 00:00:00
abstract:PURPOSE:Combining proteasome and histone deacetylase (HDAC) inhibition has been seen to provide synergistic anti-tumor activity, with complementary effects on a number of signaling pathways. The novel bi-cyclic structure of marizomib with its unique proteasome inhibition, toxicology and efficacy profiles, suggested uti...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-011-9766-6
更新日期:2012-12-01 00:00:00
abstract::Major discrepancies concerning risk-benefit assessments and regulatory actions are frequent among regulatory agencies. We explored the differences by scrutinizing a case of gemtuzumab ozogamicin (GO) in patients with acute myeloid leukaemia (AML). Assessment reports of GO were retrieved form the websites of the US Foo...
journal_title:Investigational new drugs
pub_type: 杂志文章,评审
doi:10.1007/s10637-012-9877-8
更新日期:2013-04-01 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::Infantile hemangioma is the most common vascular tumor of childhood. It is characterized by clinical expansion of endothelial cells and promoted by angiogenic factors. Luteolin is a flavonoid compound that carries anti-cancer and anti-angiogenesis properties. The study aimed to investigate the effect of luteolin in tr...
journal_title:Investigational new drugs
pub_type: 杂志文章
doi:10.1007/s10637-020-01052-8
更新日期:2021-01-07 00:00:00
abstract:BACKGROUND:Gemcitabine is a pro-drug that has to be phosphorylated to gemcitabine-triphosphate in order to exhibit its antineoplastic activity. This reaction involves the enzyme deoxycytidine kinase which is saturated at plasma concentrations following standard 30-min infusions. Pharmacological studies indicate that pr...
journal_title:Investigational new drugs
pub_type: 临床试验,杂志文章
doi:10.1007/s10637-005-5859-4
更新日期:2005-03-01 00:00:00