Abstract:
:Optimal delivery of chemotherapy intensity is dependent on host- and tumor-specific characteristics. In this article, the chemotherapy late intensity schedule is revised to account for tumor growth instability, where a small tumor cell fraction emerges that exhibits a higher proliferation rate than the parent strain. Modeling this instability as simplified two-population dynamics, we find that: (a) if this instability precedes the onset of treatment, the slope of the linear increase of the drug concentration for the standard "Norton-Simon late intensity schedule" changes and the initial value of the dose strongly depends on the ratio of the two tumor cell populations and on their distinct growth rates; and (b) if the instability trails the initial treatment, the effective chemotherapeutic drug concentration changes as well. Both cases point toward testable potential refinements of the Norton-Simon late intensity schedule.
journal_name
Cancer Resjournal_title
Cancer researchauthors
Castorina P,Carcò D,Guiot C,Deisboeck TSdoi
10.1158/0008-5472.CAN-09-0653subject
Has Abstractpub_date
2009-11-01 00:00:00pages
8507-15issue
21eissn
0008-5472issn
1538-7445pii
0008-5472.CAN-09-0653journal_volume
69pub_type
杂志文章相关文献
CANCER RESEARCH文献大全abstract::We have previously reported the development of a recombinant vaccinia virus vaccine expressing the human carcinoembryonic antigen (CEA) gene, designated rV(NYC)-CEA. This construct has been shown to elicit specific anti-CEA immune responses and an antitumor effect in a murine tumor model. In the studies reported here,...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1992-12-15 00:00:00
abstract::Proteasome inhibitors sensitize tumor cells to DNA-damaging agents, including ionizing radiation (IR), and DNA cross-linking agents (melphalan and cisplatin) through unknown mechanisms. The Fanconi anemia pathway is a DNA damage-activated signaling pathway, which regulates cellular resistance to DNA cross-linking agen...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-07-1015
更新日期:2007-08-01 00:00:00
abstract::Cobalamin (vitamin B12) binding protein was purified from gastric cancer extracts and from serum-free culture medium of cancer cell line KATOH-III. The molecular weight, determined by immunoprecipitation and sodium dodecyl sulfate-polyacrylamide gel electrophoresis, was 70,000 and the pI was 2.8 to 3.2. From biochemic...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1989-06-01 00:00:00
abstract::The diagnostic value of elevated human chorionic gonadotropin (hCG) and its free alpha (hCG alpha) and beta (hCG beta) subunit serum levels as specific tumor markers for nongonadal malignancies is controversial. In the present report, different monoclonal based immunoradiometric assays specific for hCG and its free hC...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1992-07-15 00:00:00
abstract::Genomic DNA from 14 basal cell carcinoma biopsies was screened for the presence of mutations in the p53 gene, using the polymerase chain reaction followed by direct DNA sequencing. Heterozygous mutations were detected in 7 of 14 (50%) samples investigated. All mutations were G:C-A:T transitions, and five (71%) of thes...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1992-07-01 00:00:00
abstract::The metabolism and mutagenic activation of the model carcinogens benzo(a)pyrene [B(a)P] and 2-acetylaminofluorene (AAF) by human and rat kidney cells were measured. A slicing technique followed by enzyme digestion was utilized to obtain the kidney cells. Although levels of total metabolism of B(a)P by rat and human ki...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1989-03-01 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::Communication between cancer cells and the tumor microenvironment results in the modulation of complex signaling networks that facilitate tumor progression. Here, we describe a new mechanism of intercellular communication originating from large oncosomes (LO), which are cancer cell-derived, atypically large (1-10 μm) ...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-16-2942
更新日期:2017-05-01 00:00:00
abstract::Several studies have suggested that calmodulin (CAM) levels increase in cells as a consequence of transformation by RNA tumor viruses. This study examines factors affecting CAM levels in normal and transformed chick embryo fibroblasts. Significant differences in CAM levels of normal and transformed cells were observed...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1984-08-01 00:00:00
abstract::The formation of 7-(2-hydroxyethyl)guanine (7-HEG) in DNA of target and nontarget tissues was investigated in male B6C3F1 mice (20/group) and F344 rats (10/group) exposed to 0, 3, 10, 33, 100, or 300 (rats only) ppm ethylene oxide (ETO) by inhalation for 6 h/day for 4 weeks (5 days/week) and mice exposed to 100 ppm ET...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1992-08-15 00:00:00
abstract::Mutations affecting phosphorylation sites in the beta-catenin gene have been implicated in the development of human and rodent hepatocellular carcinomas (HCCs). To further investigate the involvement of this gene in hepatocarcinogenesis, we used several transgenic mouse models of hepatic tumors induced by overexpressi...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:2001-03-01 00:00:00
abstract::Loss of DNA mismatch repair (MMR) increases the risk of spontaneous mutations. We sought to determine whether there was an interaction between hypoxia and MMR deficiency that might contribute to the phenomenon of tumor progression. Human colon carcinoma HCT116+ch2 (MMR-deficient) and HCT116+ch3 (MMR-proficient) sublin...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:2001-10-15 00:00:00
abstract::The insulin-like growth factor receptor (IGF-IR) and insulin receptor are either overactivated and/or overexpressed in a wide range of tumor types and contribute to tumorigenicity, proliferation, metastasis, and drug resistance. Here, we show that BMS-554417, a novel small molecule developed as an inhibitor of IGF-IR,...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-05-1107
更新日期:2006-01-01 00:00:00
abstract::BCL2 suppresses apoptosis by binding the BH3 domain of proapoptotic factors and thereby regulating outer mitochondrial membrane permeabilization. Many tumor types, including B-cell lymphomas and chronic lymphocytic leukemia, are dependent on BCL2 for survival but become resistant to apoptosis after treatment. Here, we...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-11-4204
更新日期:2012-08-15 00:00:00
abstract::We have analyzed the mechanism of activation of two human ras oncogenes. We have also identified a rasN gene from a human gastric adenocarcinoma which efficiently induced both morphological transformation and tumorigenicity of NIH3T3 cells in a transfection assay. The rasN gene in tumor tissue DNA did not appear to be...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1986-09-01 00:00:00
abstract::To enable antibodies to function as cytotoxic anticancer agents, they are modified either via attachment to protein toxins or highly potent, low-molecular-weight drugs. Such molecules, termed immunotoxins and antibody-drug conjugates, respectively, represent a second revolution in antibody-mediated cancer therapy. Thu...
journal_title:Cancer research
pub_type: 杂志文章,评审
doi:10.1158/0008-5472.CAN-11-1374
更新日期:2011-10-15 00:00:00
abstract::Human epithelial tumor progression and metastasis involve cellular invasion, dissemination in the vasculature, and regrowth at metastatic sites. Notch signaling has been implicated in metastatic progression but its roles have yet to be fully understood. Here we report the important role of Notch signaling in maintaini...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-11-0543
更新日期:2011-07-15 00:00:00
abstract::The effects of different levels of dietary cellulose on colonic crypt mitotic activity and colon carcinogenesis were studied in 190 male Sprague-Dawley rats. Rats were divided into groups and fed a basal fiber-free diet supplemented with either 0, 5, or 15% pure cellulose (w/w), for periods of 10 weeks (initiation sta...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1989-10-15 00:00:00
abstract::Nile blue derivatives have been shown to be potentially effective photosensitizers for photodynamic therapy of malignant tumors. Results of a previous study suggested that the high accumulation of these dyes in cells may be the result of dye aggregation, partition in membrane lipids, and/or sequestration in subcellula...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1991-05-15 00:00:00
abstract::Strategies to address resistance to platin drugs are greatly needed in human epithelial cancers (e.g., ovarian, head/neck, and lung) where platins are used widely and resistance occurs commonly. We found that upon ΔNp63α overexpression, AKT1 and phospho-AKT1 levels are upregulated in cancer cells. Investigations using...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-10-1481
更新日期:2011-02-01 00:00:00
abstract::There is an unmet need for pharmacodynamic and predictive biomarkers for antiangiogenic agents. Recent studies have shown that soluble vascular endothelial growth factor receptor 2 (sVEGFR2), VEGF, and several other soluble factors may be modulated by VEGF pathway inhibitors. We conducted a broad profiling of cytokine...
journal_title:Cancer research
pub_type: 杂志文章,多中心研究
doi:10.1158/0008-5472.CAN-09-2533
更新日期:2010-03-15 00:00:00
abstract::We evaluated the cytotoxicity of the immunotoxin OKT1-SAP on fresh B-chronic lymphocytic leukemia (B-CLL) cells from 31 consecutive patients. OKT1-SAP comprised the OKT1 (CD5) monoclonal antibody disulfide linked to saporin-6 (SAP) ribosome-inactivating protein from the plant Saponaria officinalis. The effect of OKT1-...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1989-06-15 00:00:00
abstract::The comparative metabolism of the enantiomers of cyclo phosphamide and of the racemate has been studied in humans. Four patients were each given, sequentially, the racemate, the (+)-enantiomer, and its (-)-antipode. The plasma levels of parent drug and the urinary output (24 hr) of unchanged drug and of two enzymatica...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1979-07-01 00:00:00
abstract::The in vitro cytotoxicities of the four drugs most frequently used for intravesical chemotherapy (Adriamycin, epodyl, mitomycin C, Thiotepa) and epirubicin were compared using monolayers and multicellular tumor spheroids of the human bladder cancer cell line, MGH-U1. Adriamycin and epirubicin were most cytotoxic again...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1989-03-15 00:00:00
abstract::Line 10 guinea pig hepatoma cells are resistant to killing by antibody plus guinea pig complement but not by antibody plus human complement. Agents that increase (metabolic inhibitors) or decrease (hormones) the sensitivity of the cells to killing by antibody plus complement were examined for their effects on the chem...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1979-04-01 00:00:00
abstract::Bone marrow cells freshly aspirated from the 10 consecutive untreated adult patients with acute nonlymphocytic leukemia were cultured by 2 different methods: the conventional agar culture method for myeloid colony formation and its modification by daily feeding with culture medium. In 5 patients, colonies grew in much...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1977-12-01 00:00:00
abstract::Some of the possible mechanisms by which polyethylene glycol (PEG) augments the ability of MOPC-315 tumor bearer spleen cells to mediate in vitro antitumor cytotoxicity were evaluated. The level of antitumor cytotoxicity obtained in 5-day cultures of tumor bearer spleen cell suspensions correlated inversely with the p...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1982-07-01 00:00:00
abstract::Cancer in a host induces responses that increase the ability of the microenvironment to sustain the growing mass, for example, angiogenesis, but cancer cells can have varying sensitivities to these sustainability signals. Here, we show that these sensitivities are significant determinants of ultimate tumor fate, espec...
journal_title:Cancer research
pub_type: 杂志文章
doi:10.1158/0008-5472.CAN-12-4590
更新日期:2013-06-15 00:00:00
abstract::A 16,500 molecular weight fraction of maleic vinyl ether (MVE-2) induced tumoristatic and tumoricidal activity in peritoneal macrophages of BALB/c and C57BL/6 mice following i.p. administration. Growth of B16 melanoma cells in vitro was inhibited up to 85% by MVE-2-activated, but not resident, peritoneal macrophages. ...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:1981-10-01 00:00:00
abstract::Ribonucleotide reductase (RR) is responsible for the de novo conversion of the ribonucleoside diphosphates to deoxyribonucleoside diphosphates, which are essential for DNA synthesis and repair. RR consists of two subunits, hRRM1 and hRRM2. p53R2 is a new RR family member. Because the majority of human tumors possess m...
journal_title:Cancer research
pub_type: 杂志文章
doi:
更新日期:2003-10-15 00:00:00