Abstract:
:Cyclooxygenase-2 (COX-2) and Protein kinase B (PKB/Akt) play a crucial role in the formation of many malignant tumors and have been shown to be the important therapeutic targets. In the present study, we examined immunohistochemical expression of phosphorylated Akt (p-Akt) and COX-2 in 45 gastric adenocarcinomas with different tumor grades. Then, adenovirus-mediated small hairpin RNA (shRNA) expression vectors rAd5-Akt1+COX-2 (rAd5-A+C) that target sequences of human COX-2 and Akt1 were used to examine the inhibitory effects on cell proliferation, invasion and apoptosis in SGC7901 gastric adenocarcinoma and U251 glioma cells. Cell growth was inhibited by over 70%, as indicated by a MTT assay, and was accompanied by G1/G0 phase arrest in the rAd5-A+C treated group, indicating poor cell growth activities. The number of cells invading through the matrigel in the rAd5-A+C treated group was significantly decreased (36.2+/-3.1) compared with that of the control group SGC7901 (105.0+/-4.0) and the nonsense sequence group rAd5-HK (102.5+/-6.4). In addition, the tumor volumes in the SGC7901 subcutaneous nude mouse model treated with rAd5-A+C was significantly smaller than those of the control group and nonsense sequence group rAd5-HK. When COX-2 and Akt1 were dramatically downregulated, Ki-67, CyclinD1, MMP-2, MMP-9 and Bcl-2 were also downregulated. Our results demonstrated that p-Akt and COX-2 were overexpressed in gastric adenocarcinomas and their expression levels were elevated with the ascending order of tumor malignancy; rAd5-A+C targeting COX-2 and Akt1 downregulated their expression significantly in a sequence-specific manner, exerting inhibitory effects on SGC7901 and U251 cell proliferation, invasion and apoptosis. In conclusion, our data suggest a novel mechanism for the regulation of malignant tumor cell growth and provide evidence for combined gene therapy for malignant tumors.
journal_name
Technol Cancer Res Treatjournal_title
Technology in cancer research & treatmentauthors
Zhang J,Zhang QY,Fu YC,Wang T,Zhang J,Xu P,Zhou X,Pu PY,Kang CSdoi
10.1177/153303460900800608subject
Has Abstractpub_date
2009-12-01 00:00:00pages
467-78issue
6eissn
1533-0346issn
1533-0338pii
c4301/Expression-of-p-Akt-and-COX-2-in-Gastric-Adejournal_volume
8pub_type
杂志文章abstract::Volumetric modulated arc therapy (VMAT) has been adopted by many clinics for its higher delivery efficiency compared to conventional intensity modulated radiotherapy techniques. Currently, the quality assurance (QA) has remained a challenge in that no identical tests are available for accelerators from different vendo...
journal_title:Technology in cancer research & treatment
pub_type: 杂志文章
doi:10.1177/1533034614500419
更新日期:2015-08-01 00:00:00
abstract::Two noninvasive methods, thermography and laser Doppler imaging (LDI), were assessed for their ability to quantitatively assess parameters of vascularity in lesions of HIV-associated Kaposi's sarcoma (KS). Thermography and LDI images of a representative KS lesion were recorded in 16 patients and compared to normal ski...
journal_title:Technology in cancer research & treatment
pub_type: 杂志文章
doi:10.1177/153303460400300506
更新日期:2004-10-01 00:00:00
abstract:PURPOSE:To develop and evaluate an automatic intensity-modulated radiation therapy (IMRT) program for cervical cancer, including a Convolution Neural Network (CNN)-based prediction model and an automated optimization strategy. METHODS:A CNN deep learning model was trained to predict a patient-specify set of IMRT objec...
journal_title:Technology in cancer research & treatment
pub_type: 杂志文章
doi:10.1177/1533033820957002
更新日期:2020-01-01 00:00:00
abstract:BACKGROUND:Our objective is to explore the accuracy of magnetic resonance imaging in determining the preoperative T and N staging, pathological stage, and the length of esophageal tumor in patients with esophageal cancer. METHODS:This retrospective analysis included 57 patients admitted to the Department of Thoracic S...
journal_title:Technology in cancer research & treatment
pub_type: 杂志文章
doi:10.1177/1533033819876263
更新日期:2019-01-01 00:00:00
abstract::Histological differentiation is a major pathological criterion indicating the risk of tumor invasion and metastasis in patients with hepatocellular carcinoma. The degree of tumor differentiation is controlled by a complex interacting network of associated proteins. The principal aim of the present study is to identify...
journal_title:Technology in cancer research & treatment
pub_type: 杂志文章
doi:10.1177/1533034617732426
更新日期:2017-12-01 00:00:00
abstract::Tumstatin (Tum) is a powerful angiostatin that inhibits proliferation and induces apoptosis of tumorous vascular endothelial cells. A nonpathogenic and anaerobic bacterium, Bifidobacterium longum (BL), selectively localizes to and proliferates in the hypoxia location within solid tumor. The aims of this study were to ...
journal_title:Technology in cancer research & treatment
pub_type: 杂志文章
doi:10.1177/1533034615581977
更新日期:2016-06-01 00:00:00
abstract::Epithelial ovarian cancer has the highest mortality rate among the gynecologic cancers and spreads beyond the ovary in 90% of the women diagnosed with ovarian cancer. Detection before the disease has spread beyond the ovary would significantly improve the survival from ovarian cancer, which is currently only 30% over ...
journal_title:Technology in cancer research & treatment
pub_type: 杂志文章
doi:10.1177/153303460400300612
更新日期:2004-12-01 00:00:00
abstract::The integrated use of optical technologies for patient monitoring is addressed in the framework of time-resolved treatment delivery for scanned ion beam therapy. A software application has been designed to provide the therapy control system (TCS) with a continuous geometrical feedback by processing the external surrog...
journal_title:Technology in cancer research & treatment
pub_type: 杂志文章
doi:10.7785/tcrtexpress.2013.600275
更新日期:2014-12-01 00:00:00
abstract:BACKGROUND:Gene expression profiles from early-onset breast cancer and normal tissues were analyzed to explore the genes and prognostic factors associated with breast cancer. METHODS:GSE109169 and GSE89116 were obtained from the database of Gene Expression Omnibus. We firstly screened the differentially expressed gene...
journal_title:Technology in cancer research & treatment
pub_type: 杂志文章
doi:10.1177/1533033819893670
更新日期:2020-01-01 00:00:00
abstract:PURPOSE:To evaluate 2 simultaneous integrated boost treatment planning techniques using helical tomotherapy for breast conserving therapy with regard to acute skin toxicity and dosimetry. METHODS:Thirty-two patients were studied. The original approach was for 16 patients and incorporated a directional block of the ips...
journal_title:Technology in cancer research & treatment
pub_type: 杂志文章
doi:10.1177/1533034615574387
更新日期:2016-04-01 00:00:00
abstract::Tumor-infiltrating immune cells are part of a complex microenvironment and associated with improved clinical outcomes in a broad range of tumor types. However, a detailed map for the prognostic landscape of tumor-infiltrating immune cells and immune checkpoint modulators in glioblastoma is still lacking. Here, with th...
journal_title:Technology in cancer research & treatment
pub_type: 杂志文章
doi:10.1177/1533033819869949
更新日期:2019-01-01 00:00:00
abstract::The aim of this study was to evaluate the relationship of prognosis of patients with multiple myeloma having extramedullary involvement (EMM) with the 18F- fluorodeoxyglucose(18F-FDG) maximum standardized uptake value and the expression of Ki-67 in biopsy samples. Sixty-five patients were newly diagnosed with multiple...
journal_title:Technology in cancer research & treatment
pub_type: 杂志文章
doi:10.1177/1533033819849067
更新日期:2019-01-01 00:00:00
abstract:OBJECTIVE:To confirm the feasibility and accuracy of the method for evaluating blood supply and embolization rate of liver cancer based on I-flow software through animal experiments and clinical study. METHODS:Rabbits underwent selective angiography under different perfusion conditions in the same kidney. The blood su...
journal_title:Technology in cancer research & treatment
pub_type: 杂志文章
doi:10.1177/1533033820970665
更新日期:2020-01-01 00:00:00
abstract:BACKGROUND:The aim of this study was to evaluate the efficacy and toxicity of robotic CyberKnife (Accuray Incorporated, Sunnyvale, California)-based stereotactic body radiation therapy (SBRT) in patients with recurrent or metastatic abdominopelvic tumors. METHODS AND MATERIALS:A total of 69 patients treated between Ma...
journal_title:Technology in cancer research & treatment
pub_type: 杂志文章
doi:10.1177/1533034615571353
更新日期:2016-02-01 00:00:00
abstract:OBJECTIVE:To evaluate and quantify the planning performance of automatic planning (AP) with manual planning (MP) for nasopharyngeal carcinoma in the RayStation treatment planning system (TPS). METHODS:A progressive and effective design method for AP of nasopharyngeal carcinoma was realized through automated scripts in...
journal_title:Technology in cancer research & treatment
pub_type: 杂志文章
doi:10.1177/1533033820915710
更新日期:2020-01-01 00:00:00
abstract::The PIN diode developed by Bhabha Atomic Research Centre (BARC) was modified for its use as a dosimeter in radiation therapy. For this purpose the diode was mounted on a printed circuit board (PCB) and provided with necessary connections so that its response against irradiation can be recorded by a standard radiothera...
journal_title:Technology in cancer research & treatment
pub_type: 杂志文章
doi:10.7785/tcrt.2012.500388
更新日期:2014-08-01 00:00:00
abstract::This review addresses the epidemiology, historical reports, current issues, data and controversies involved in the management of brain metastases. The literature regarding surgery, whole brain radiation therapy, stereotactic radiosurgery or some combination of those treatments is discussed as well as issues of cost-ef...
journal_title:Technology in cancer research & treatment
pub_type: 杂志文章,评审
doi:10.1177/153303460300200205
更新日期:2003-04-01 00:00:00
abstract::Brachytherapy has the advantage of delivering a high dose to the tumor while sparing the surrounding normal tissues. With proper case selection and delivery technique, high-dose-rate (HDR) brachytherapy has great promise, because it eliminates radiation exposure, allows short treatment times, and can be performed on a...
journal_title:Technology in cancer research & treatment
pub_type: 杂志文章,评审
doi:10.1177/153303460400300305
更新日期:2004-06-01 00:00:00
abstract::As one of the common cancers that threaten human life, the recurrence and metastasis of colorectal cancer seriously affect the prognosis of patients. Although new drugs and comprehensive treatments have been adopted, the current treatment effect on this tumor, especially in advanced colorectal cancer, is still not sat...
journal_title:Technology in cancer research & treatment
pub_type: 杂志文章
doi:10.1177/1533033819892261
更新日期:2020-01-01 00:00:00
abstract:BACKGROUND:Palliation of advanced disease using radiotherapy can create difficult clinical situations where standard computed tomography simulation and immobilization techniques are not feasible. We developed a linear accelerator-based radiotherapy simulation technique using nonstandard patient positioning for head and...
journal_title:Technology in cancer research & treatment
pub_type: 杂志文章
doi:10.1177/1533033819865623
更新日期:2019-01-01 00:00:00
abstract::Glypican-3 has been reported to be one of the most promising serum markers for hepatocellular carcinoma. This study aimed to assess the clinical utility of serum glypican 3 for the diagnosis of hepatocellular carcinoma. We recruited consecutive patients on a large scale, 283 with hepatocellular carcinoma, 445 with chr...
journal_title:Technology in cancer research & treatment
pub_type: 杂志文章
doi:10.1177/1533034615605248
更新日期:2016-12-01 00:00:00
abstract::Traditional imaging techniques, such as computed tomography (CT), have high spatial resolution for changes in the anatomy or structure of organs, but are not very useful for detecting early biochemical changes. Conversely, positron emission tomography (PET) relies on changes in molecular biology to identify the earlie...
journal_title:Technology in cancer research & treatment
pub_type: 杂志文章,评审
doi:10.1177/153303460600500204
更新日期:2006-04-01 00:00:00
abstract:UNLABELLED:The purpose of this study was to compare the prognostic value of the percentage of positive biopsy cores (PPBC), the percentage of cancer volume (PCV), and the maximum involvement of biopsy cores (MIBC) as a prognostic factor in low- and intermediate-risk patients with clinically localized prostate cancer wh...
journal_title:Technology in cancer research & treatment
pub_type: 杂志文章
doi:10.7785/tcrtexpress.2013.600271
更新日期:2014-06-01 00:00:00
abstract::Intensity-modulated radiation therapy (IMRT) has gained rapid and wide-spread acceptance in the radiation oncology community for its ability to create dose distributions that conform to the convoluted shapes of many tumors. It is a complicated treatment technique, for which quality assurance procedures are correspondi...
journal_title:Technology in cancer research & treatment
pub_type: 杂志文章
doi:10.1177/153303460600500504
更新日期:2006-10-01 00:00:00
abstract::To quantify the advantages of a 6 degrees of freedom (dof) versus the conventional 3- or 4-dof correction modality for stereotactic body radiation therapy (SBRT) treatments. Eighty-five patients were fitted with 5-7 infra-red passive markers for optical localization. Data, acquired during the treatment, were analyzed ...
journal_title:Technology in cancer research & treatment
pub_type: 杂志文章
doi:10.1177/153303460800700304
更新日期:2008-06-01 00:00:00
abstract::A fiber confocal back scattering micro-spectrometer (FCBS) was established, which combined fiber confocal microscopy with light scattering spectroscopy (LSS) for early diagnosis of the cancer cell at cellular level. An adherent monolayer human normal gastric epithelium line GES-1 and a carcinoma cell line NCI-N87 as w...
journal_title:Technology in cancer research & treatment
pub_type: 杂志文章
doi:10.7785/tcrt.2012.500222
更新日期:2011-10-01 00:00:00
abstract::Growing evidence suggests that aberration of the DNA repair pathway significantly contributes to tumorigenesis. Single-nucleotide polymorphisms in DNA repair-related genes such as WRN have been implicated in cancer risk. However, the results of published studies remain inconclusive. Therefore, we performed a meta-anal...
journal_title:Technology in cancer research & treatment
pub_type: 杂志文章,meta分析
doi:10.1177/1533034614561359
更新日期:2016-02-01 00:00:00
abstract:OBJECTIVE:Osteosarcoma is a common malignant bone tumor that is frequently found in the long bones of children and adolescents. The aim of this study is to examine long noncoding RNA-steroid receptor RNA activator 1 expression in osteosarcoma to explore the biological function of long noncoding RNA steroid receptor RNA...
journal_title:Technology in cancer research & treatment
pub_type: 杂志文章
doi:10.1177/1533033819841438
更新日期:2019-01-01 00:00:00
abstract::We have developed a small animal conformal radiation therapy device that provides a degree of geometrical/anatomical targeting comparable to what is achievable in a commercial animal irradiator. small animal conformal radiation therapy device is capable of producing precise and accurate conformal delivery of radiation...
journal_title:Technology in cancer research & treatment
pub_type: 杂志文章
doi:10.1177/1533034615626011
更新日期:2017-02-01 00:00:00
abstract::Helical tomotherapy is a form of image-guided intensity-modulated radiotherapy that introduces the ring gantry concept into radiation oncology. The system is a combination of a therapeutic linear accelerator and a megavoltage CT-scanner. This work describes the clinical experience with megavoltage CT with 456 patients...
journal_title:Technology in cancer research & treatment
pub_type: 杂志文章
doi:10.1177/153303460900800504
更新日期:2009-10-01 00:00:00